@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600&family=Noto+Serif+SC:wght@500;600;700&display=swap');

:root {
  --paper: #eaf7ff;
  --paper-deep: #d6efff;
  --ink: #102a43;
  --muted: #5b7185;
  --green: #087eae;
  --green-soft: #dff5ff;
  --coral: #ff7a59;
  --coral-dark: #d94f32;
  --cream: #fafdff;
  --line: rgba(16, 74, 110, 0.16);
  --shadow: 0 20px 60px rgba(23, 103, 148, 0.14);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  color: var(--ink);
  background:
    radial-gradient(circle at 90% 6%, rgba(255,255,255,.92), transparent 24rem),
    radial-gradient(circle at 10% 34%, rgba(65,182,230,.18), transparent 28rem),
    linear-gradient(180deg, #dff3ff 0%, #f7fcff 48%, var(--paper) 100%);
  font-family: 'DM Sans', 'PingFang SC', sans-serif;
  line-height: 1.6;
}
button, input, select { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; text-decoration: none; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1240px;
  margin: 0 auto;
  padding: 18px 32px;
  background: color-mix(in srgb, var(--paper) 82%, transparent);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid transparent;
}
.brand { display: inline-flex; align-items: center; gap: 11px; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 40px;
  aspect-ratio: 1;
  border-radius: 50% 50% 44% 56%;
  color: var(--cream);
  background: var(--green);
  font: 600 19px 'Noto Serif SC', serif;
  transform: rotate(-5deg);
}
.brand > span:last-child { display: flex; flex-direction: column; line-height: 1.15; }
.brand strong { font: 600 17px 'Noto Serif SC', serif; letter-spacing: .06em; }
.brand small { color: var(--muted); font-size: 10px; letter-spacing: .18em; text-transform: uppercase; }
.desktop-nav { display: flex; align-items: center; gap: 30px; font-size: 14px; }
.desktop-nav a { position: relative; }
.desktop-nav a::after { content: ''; position: absolute; left: 0; right: 100%; bottom: -5px; height: 1px; background: var(--coral); transition: right .25s ease; }
.desktop-nav a:hover::after { right: 0; }
.mobile-nav { display: none; }

main { min-height: 100dvh; }
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(340px, .9fr);
  gap: clamp(42px, 7vw, 110px);
  align-items: center;
  max-width: 1180px;
  min-height: 670px;
  margin: 0 auto;
  padding: 70px 32px 90px;
}
.eyebrow { margin: 0 0 13px; color: var(--coral-dark); font-size: 12px; font-weight: 600; letter-spacing: .18em; text-transform: uppercase; }
h1, h2, h3 { font-family: 'Noto Serif SC', serif; line-height: 1.18; }
h1 { margin: 0; font-size: clamp(48px, 7.2vw, 91px); letter-spacing: -.05em; }
h1 em { color: var(--green); font-style: normal; position: relative; }
.no-break { white-space: nowrap; }
h1 em::after { content: ''; position: absolute; z-index: -1; left: 2%; right: -2%; bottom: 7px; height: 15px; background: rgba(232,111,75,.28); transform: rotate(-1.2deg); }
.hero-intro { max-width: 650px; margin: 28px 0 30px; color: #46524c; font-size: 18px; }
.hero-actions { display: flex; align-items: center; gap: 22px; }
.primary-button, .submit-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  min-height: 52px;
  padding: 0 24px;
  border: 0;
  border-radius: 4px 18px 4px 18px;
  color: #fffaf0;
  background: var(--green);
  box-shadow: 0 12px 28px rgba(23,79,61,.19);
  font-weight: 600;
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.primary-button:hover, .submit-button:hover { transform: translateY(-2px); background: #0e3e2f; box-shadow: 0 15px 34px rgba(23,79,61,.25); }
.text-button { border: 0; border-bottom: 1px solid var(--ink); padding: 4px 0; color: var(--ink); background: transparent; cursor: pointer; }
.trust-list { display: flex; gap: 20px; flex-wrap: wrap; margin: 26px 0 0; padding: 0; color: var(--muted); font-size: 12px; list-style: none; }
.trust-list li::before { content: '✓'; color: var(--green); margin-right: 6px; }
.hero-preview { position: relative; padding: 28px; overflow: hidden; border: 1px solid rgba(23,79,61,.14); border-radius: 48px 8px 48px 8px; background: rgba(255,250,240,.76); box-shadow: var(--shadow); transform: rotate(1deg); }
.hero-preview::before { content: ''; position: absolute; width: 220px; height: 220px; right: -80px; top: -100px; border-radius: 50%; border: 46px solid rgba(23,79,61,.07); }
.preview-topline { position: relative; display: flex; justify-content: space-between; color: var(--muted); font-size: 12px; }
.route-orbit { position: relative; height: 150px; margin: 22px 0 5px; }
.origin-dot, .destination-dot { position: absolute; z-index: 2; display: grid; place-items: center; width: 74px; height: 74px; border-radius: 50%; font: 600 14px 'Noto Serif SC', serif; }
.origin-dot { left: 8px; bottom: 9px; color: var(--green); background: var(--green-soft); }
.destination-dot { width: 100px; height: 100px; right: 5px; top: 0; color: #fff; background: var(--coral); transform: rotate(4deg); }
.path-line { position: absolute; left: 72px; right: 82px; top: 71px; height: 66px; border-top: 2px dashed var(--green); border-radius: 50%; transform: rotate(-15deg); }
.path-line::after { content: '✦'; position: absolute; left: 49%; top: -17px; color: var(--coral); font-size: 20px; }
.hero-preview h2 { position: relative; margin: 12px 0 18px; font-size: 25px; }
.preview-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; overflow: hidden; border: 1px solid var(--line); border-radius: 15px; background: var(--line); }
.preview-grid span { display: flex; flex-direction: column; padding: 13px; background: var(--cream); color: var(--muted); font-size: 11px; }
.preview-grid b { color: var(--ink); font-size: 16px; font-weight: 600; }
.hero-preview > p { margin: 17px 0 0; color: var(--muted); font-size: 12px; }

.question-strip { padding: 28px 32px 33px; color: #f7f0e5; background: var(--green); text-align: center; }
.question-strip p { margin: 0 0 14px; opacity: .75; font-size: 13px; }
.question-strip div { display: flex; justify-content: center; flex-wrap: wrap; gap: 10px; }
.question-strip span { padding: 7px 14px; border: 1px solid rgba(255,255,255,.23); border-radius: 999px; font-family: 'Noto Serif SC', serif; font-size: 14px; }

.planner-section, .results-section { max-width: 1060px; margin: 0 auto; padding: 100px 32px; }
.section-heading { max-width: 680px; margin-bottom: 38px; }
.section-heading h2 { margin: 0; font-size: clamp(34px, 5vw, 54px); letter-spacing: -.035em; }
.section-heading > p:last-child { color: var(--muted); }
.planner-form { padding: clamp(22px, 4vw, 45px); border: 1px solid var(--line); border-radius: 8px 38px 8px 38px; background: rgba(255,250,240,.7); box-shadow: 0 25px 70px rgba(73,64,46,.09); }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.compact-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); margin-top: 28px; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field > span, legend { font-weight: 600; font-size: 14px; }
.field small, legend small { color: var(--muted); font-size: 11px; font-weight: 400; }
select, input[type='text'], input[type='date'] { width: 100%; min-height: 48px; padding: 0 13px; border: 1px solid var(--line); border-radius: 9px; color: var(--ink); background: rgba(255,255,255,.72); outline: none; }
select:focus, input:focus { border-color: var(--green); box-shadow: 0 0 0 3px rgba(8,126,174,.1); }
.date-field { grid-column: 1 / -1; }
.date-range { display: grid; grid-template-columns: 1fr auto 1fr; gap: 12px; align-items: end; }
.date-range label { display: grid; gap: 5px; }
.date-range > span { padding-bottom: 12px; color: var(--muted); }
.quick-dates { display: flex; flex-wrap: wrap; gap: 8px; }
.quick-dates button { min-height: 44px; padding: 8px 14px; border: 1px solid var(--line); border-radius: 999px; color: var(--green); background: rgba(255,255,255,.62); cursor: pointer; font-size: 11px; }
.quick-dates button:hover, .quick-dates button.active { color: white; border-color: var(--green); background: var(--green); }
.trip-length-card { justify-content: center; padding: 18px; border: 1px solid var(--line); border-radius: 12px; background: rgba(255,255,255,.48); }
.trip-length-card strong { color: var(--green); font: 600 24px 'Noto Serif SC', serif; }
.specific-destination { max-width: 600px; margin-top: 16px; padding: 18px; border-left: 3px solid var(--coral); background: rgba(255,255,255,.42); }
.specific-destination[hidden] { display: none; }
.interest-groups { display: grid; gap: 15px; }
.interest-group { display: grid; grid-template-columns: 88px 1fr; align-items: start; gap: 12px; padding: 14px; border: 1px solid var(--line); border-radius: 12px; background: rgba(255,255,255,.35); }
.interest-group > strong { padding-top: 10px; color: var(--green); font: 600 13px 'Noto Serif SC', serif; }
.budget-control { display: grid; grid-template-columns: 1fr 82px; align-items: center; gap: 14px; min-height: 48px; }
input[type='range'] { accent-color: var(--green); }
output { font-weight: 600; text-align: right; }
fieldset { margin: 34px 0 0; padding: 0; border: 0; }
legend { margin-bottom: 12px; }
.choice-row { display: flex; flex-wrap: wrap; gap: 10px; }
.choice-row label { cursor: pointer; }
.choice-row input { position: absolute; opacity: 0; pointer-events: none; }
.choice-row span { display: inline-flex; align-items: center; min-height: 42px; padding: 0 17px; border: 1px solid var(--line); border-radius: 999px; background: rgba(255,255,255,.45); font-size: 13px; transition: .2s ease; }
.choice-row input:checked + span { color: #fff; border-color: var(--green); background: var(--green); transform: translateY(-1px); }
.family-panel { display: grid; grid-template-columns: 1fr auto auto; gap: 18px; align-items: end; margin-top: 17px; padding: 18px; border-left: 3px solid var(--coral); background: rgba(232,111,75,.07); }
.family-panel[hidden] { display: none; }
.toggle-field { display: flex; align-items: center; gap: 8px; min-height: 48px; font-size: 13px; }
.toggle-field input { accent-color: var(--green); }
.form-note { display: flex; gap: 10px; align-items: flex-start; margin-top: 30px; color: var(--muted); font-size: 12px; }
.form-note span { display: grid; flex: 0 0 20px; place-items: center; width: 20px; height: 20px; border: 1px solid var(--line); border-radius: 50%; color: var(--green); }
.submit-button { width: 100%; min-height: 58px; margin-top: 18px; font-size: 16px; }

.results-section { padding-top: 15px; }
.result-heading { margin-bottom: 26px; }
.result-tabs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 18px; }
.result-tab { padding: 18px; border: 1px solid var(--line); border-radius: 12px; text-align: left; background: rgba(255,255,255,.55); cursor: pointer; }
.result-tab strong, .result-tab span { display: block; }
.result-tab strong { font: 600 18px 'Noto Serif SC', serif; }
.result-tab span { color: var(--muted); font-size: 11px; }
.result-tab[aria-selected='true'] { color: #fff; border-color: var(--green); background: var(--green); }
.result-tab[aria-selected='true'] span { color: rgba(255,255,255,.72); }
.result-detail { overflow: hidden; border: 1px solid var(--line); border-radius: 6px 34px 6px 34px; background: var(--cream); box-shadow: var(--shadow); }
.result-hero { display: grid; grid-template-columns: 1fr auto; gap: 30px; padding: 34px; color: #f9f3e8; background: var(--green); }
.result-hero h3 { margin: 4px 0 8px; font-size: 36px; }
.result-hero p { max-width: 620px; margin: 0; color: rgba(255,255,255,.74); }
.result-price { align-self: center; text-align: right; white-space: nowrap; }
.result-price strong { display: block; font-size: 25px; }
.result-price small { opacity: .7; }
.metric-row { display: grid; grid-template-columns: repeat(4, 1fr); border-bottom: 1px solid var(--line); }
.metric-row div { padding: 18px; border-right: 1px solid var(--line); }
.metric-row div:last-child { border-right: 0; }
.metric-row small, .metric-row strong { display: block; }
.metric-row small { color: var(--muted); font-size: 11px; }
.metric-row strong { margin-top: 3px; font-size: 14px; }
.result-body { display: grid; grid-template-columns: 1.5fr 1fr; gap: 0; }
.result-main, .result-aside { padding: 28px; }
.result-aside { border-left: 1px solid var(--line); background: rgba(233,223,207,.28); }
.result-block + .result-block { margin-top: 29px; }
.result-block h4 { margin: 0 0 13px; font: 600 17px 'Noto Serif SC', serif; }
.reason-list, .risk-list { margin: 0; padding-left: 18px; font-size: 13px; }
.timeline { display: grid; gap: 0; }
.timeline-item { position: relative; display: grid; grid-template-columns: 95px 1fr; gap: 15px; padding: 0 0 22px 18px; border-left: 1px solid var(--line); }
.timeline-item::before { content: ''; position: absolute; left: -5px; top: 5px; width: 9px; height: 9px; border-radius: 50%; background: var(--coral); }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item time { color: var(--muted); font-size: 11px; }
.timeline-item strong, .timeline-item p { display: block; }
.timeline-item strong { font-size: 13px; }
.timeline-item p { margin: 4px 0 0; color: var(--muted); font-size: 12px; }
.stay-card, .food-card { padding: 13px 0; border-bottom: 1px solid var(--line); }
.stay-card:last-child, .food-card:last-child { border-bottom: 0; }
.result-block details { margin-top: 8px; }
.result-block summary { color: var(--green); cursor: pointer; font-size: 12px; }
.stay-card strong, .stay-card span, .food-card strong, .food-card span { display: block; }
.stay-card span, .food-card span { color: var(--muted); font-size: 11px; }
.stay-card b { color: var(--coral-dark); font-size: 12px; }
.weather-card { padding: 16px; border-radius: 12px; background: var(--green-soft); font-size: 12px; }
.weather-card strong { display: block; margin-bottom: 6px; font-size: 14px; }
.weather-card p { margin: 7px 0; }
.platform-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; }
.platform-action { min-height: 42px; padding: 10px; border: 1px solid var(--line); border-radius: 8px; color: var(--ink); background: #fff; cursor: pointer; text-align: center; font-size: 12px; }
.platform-action.primary { color: #fff; border-color: var(--coral); background: var(--coral); }
.disclaimer { margin-top: 14px; color: var(--muted); font-size: 10px; }

.principles { padding: 100px max(32px, calc((100vw - 1180px) / 2)); color: #f7f0e5; background: #1f332b; }
.light-heading .eyebrow { color: #f09a7f; }
.principle-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; margin-top: 45px; background: rgba(255,255,255,.15); }
.principle-grid article { min-height: 255px; padding: 26px; background: #1f332b; }
.principle-grid span { color: #f09a7f; font-size: 12px; }
.principle-grid h3 { margin: 30px 0 12px; font-size: 20px; }
.principle-grid p { color: rgba(255,255,255,.63); font-size: 13px; }
.boundary { display: grid; grid-template-columns: .9fr 1.1fr; gap: 80px; max-width: 1120px; margin: 0 auto; padding: 100px 32px; }
.boundary h2 { margin: 0; font-size: clamp(31px, 4vw, 48px); }
.boundary ul { display: grid; gap: 20px; margin: 0; padding: 0; list-style: none; }
.boundary li { padding-bottom: 20px; border-bottom: 1px solid var(--line); color: var(--muted); }
.boundary strong { color: var(--ink); }
footer { display: flex; justify-content: space-between; gap: 30px; align-items: center; padding: 34px max(32px, calc((100vw - 1180px) / 2)); border-top: 1px solid var(--line); }
footer p { color: var(--muted); font-size: 11px; text-align: right; }
.toast { position: fixed; z-index: 50; left: 50%; bottom: max(24px, env(safe-area-inset-bottom)); transform: translate(-50%, 20px); padding: 10px 16px; border-radius: 999px; color: #fff; background: var(--ink); opacity: 0; pointer-events: none; transition: .22s ease; font-size: 12px; }
.toast.show { opacity: 1; transform: translate(-50%, 0); }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; padding-top: 45px; }
  .hero-copy { max-width: 700px; }
  .hero-preview { max-width: 580px; }
  .principle-grid { grid-template-columns: 1fr 1fr; }
  .result-body { grid-template-columns: 1fr; }
  .result-aside { border-top: 1px solid var(--line); border-left: 0; }
  .boundary { gap: 45px; }
}

@media (max-width: 650px) {
  .site-header { padding: 14px 18px; }
  .desktop-nav { display: none; }
  .mobile-nav { position: relative; display: block; }
  .mobile-nav summary { padding: 7px 10px; border: 1px solid var(--line); border-radius: 8px; font-size: 12px; list-style: none; cursor: pointer; }
  .mobile-nav summary::-webkit-details-marker { display: none; }
  .mobile-nav nav { position: absolute; right: 0; top: 42px; display: grid; width: 170px; padding: 8px; border: 1px solid var(--line); border-radius: 10px; background: var(--cream); box-shadow: var(--shadow); }
  .mobile-nav a { padding: 10px; font-size: 13px; }
  .hero { min-height: auto; padding: 52px 18px 66px; gap: 42px; }
  h1 { font-size: clamp(46px, 14vw, 62px); }
  .hero-intro { font-size: 16px; }
  .hero-actions { align-items: stretch; flex-direction: column; gap: 13px; }
  .text-button { align-self: flex-start; }
  .trust-list { gap: 9px 15px; }
  .hero-preview { padding: 21px; border-radius: 34px 7px 34px 7px; }
  .question-strip { padding-inline: 18px; }
  .planner-section, .results-section { padding: 75px 18px; }
  .planner-form { padding: 22px 17px; border-radius: 6px 25px 6px 25px; }
  .form-grid, .compact-grid { grid-template-columns: 1fr; }
  .date-range { grid-template-columns: 1fr; }
  .date-range > span { display: none; }
  .interest-group { grid-template-columns: 1fr; }
  .interest-group > strong { padding-top: 0; }
  .family-panel { grid-template-columns: 1fr; align-items: start; }
  .choice-row { gap: 8px; }
  .choice-row span { min-height: 39px; padding: 0 13px; }
  .result-tabs { grid-template-columns: 1fr; }
  .result-hero { grid-template-columns: 1fr; padding: 25px 20px; }
  .result-price { text-align: left; }
  .metric-row { grid-template-columns: 1fr 1fr; }
  .metric-row div:nth-child(2) { border-right: 0; }
  .metric-row div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .result-main, .result-aside { padding: 22px 18px; }
  .timeline-item { grid-template-columns: 78px 1fr; }
  .platform-actions { grid-template-columns: 1fr; }
  .principles { padding: 75px 18px; }
  .principle-grid { grid-template-columns: 1fr; }
  .principle-grid article { min-height: auto; }
  .boundary { grid-template-columns: 1fr; gap: 38px; padding: 75px 18px; }
  footer { align-items: flex-start; flex-direction: column; padding: 28px 18px calc(28px + env(safe-area-inset-bottom)); }
  footer p { text-align: left; }
}

@media (prefers-reduced-motion: no-preference) {
  .hero-copy > * { animation: rise .55s both; }
  .hero-copy > *:nth-child(2) { animation-delay: .08s; }
  .hero-copy > *:nth-child(3) { animation-delay: .16s; }
  .hero-copy > *:nth-child(4) { animation-delay: .23s; }
  .hero-preview { animation: card-in .7s .18s both; }
  @keyframes rise { from { opacity: 0; transform: translateY(15px); } }
  @keyframes card-in { from { opacity: 0; transform: translateY(22px) rotate(3deg); } to { opacity: 1; transform: rotate(1deg); } }
}