:root {
  --ink: #20323f;
  --ink-soft: #4c5d66;
  --paper: #f6f0e5;
  --paper-deep: #eadfce;
  --white: #fffdf8;
  --brick: #a83d2f;
  --brick-dark: #7f2c23;
  --gold: #d79b43;
  --green: #47705c;
  --line: rgba(32, 50, 63, .16);
  --shadow: 0 22px 60px rgba(36, 41, 45, .14);
  --radius: 22px;
  --serif: "Source Han Serif SC", "Noto Serif CJK SC", "Songti SC", STSong, serif;
  --sans: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 10% 0%, rgba(215,155,67,.18), transparent 28rem),
    linear-gradient(180deg, #efe6d7 0, var(--paper) 24rem, #f9f5ed 100%);
  font-family: var(--sans);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
a { color: inherit; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 100; background: var(--white); padding: 10px 14px; border-radius: 10px; }
.skip-link:focus { top: 16px; }

.loading-screen { min-height: 100vh; display: grid; place-content: center; text-align: center; gap: 16px; color: var(--ink-soft); }
.seal { width: 62px; height: 62px; margin: auto; display: grid; place-items: center; border: 2px solid var(--brick); color: var(--brick); font: 700 30px/1 var(--serif); transform: rotate(-3deg); }

.app-shell { min-height: 100vh; padding-bottom: 94px; }
.hero {
  position: relative;
  min-height: min(760px, 88svh);
  color: #fff;
  overflow: hidden;
  background: #283941;
}
.hero-media { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: 57% center; filter: saturate(.82) contrast(1.04); }
.hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(19,31,38,.28), rgba(20,30,35,.18) 32%, rgba(22,32,37,.88) 92%), linear-gradient(90deg, rgba(21,31,36,.55), transparent 68%); }
.hero-inner { position: relative; z-index: 1; width: min(1120px, calc(100% - 40px)); min-height: inherit; margin: auto; padding: 24px 0 34px; display: flex; flex-direction: column; }
.hero-top { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 650; letter-spacing: .08em; }
.brand-mark { width: 38px; height: 38px; display: grid; place-items: center; border: 1px solid rgba(255,255,255,.58); font: 700 20px/1 var(--serif); transform: rotate(-2deg); }
.icon-button, .secondary-button, .primary-button, .map-link, .day-toggle, .nav-button, .check-row { cursor: pointer; }
.icon-button { width: 44px; height: 44px; border: 1px solid rgba(255,255,255,.45); border-radius: 50%; color: #fff; background: rgba(16,28,34,.26); display: grid; place-items: center; backdrop-filter: blur(8px); }
.icon-button:hover { background: rgba(255,255,255,.14); }
.icon-button svg { width: 19px; height: 19px; }
.hero-copy { margin-top: auto; max-width: 760px; }
.hero-kicker { margin: 0 0 12px; color: #f4d79c; font-size: 14px; letter-spacing: .18em; }
h1 { margin: 0; font: 700 clamp(46px, 10vw, 94px)/.98 var(--serif); letter-spacing: -.045em; text-wrap: balance; }
.hero-subtitle { margin: 20px 0 0; max-width: 590px; font-size: clamp(17px, 2.6vw, 23px); color: rgba(255,255,255,.88); }
.crew { display: flex; align-items: center; gap: 0; margin: 28px 0 26px; }
.avatar { width: 44px; height: 44px; margin-right: -7px; border-radius: 50%; display: grid; place-items: center; border: 2px solid rgba(255,255,255,.78); color: #fff; font-weight: 700; font-size: 14px; box-shadow: 0 5px 16px rgba(0,0,0,.15); }
.crew-label { margin-left: 18px; font-size: 14px; color: rgba(255,255,255,.78); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.primary-button, .secondary-button { min-height: 50px; border-radius: 999px; padding: 0 22px; display: inline-flex; align-items: center; justify-content: center; gap: 9px; font-weight: 700; text-decoration: none; border: 0; }
.primary-button { color: #fff; background: var(--brick); box-shadow: 0 12px 28px rgba(111,31,24,.3); }
.primary-button:hover { background: var(--brick-dark); transform: translateY(-1px); }
.secondary-button { color: #fff; border: 1px solid rgba(255,255,255,.42); background: rgba(22,35,41,.34); backdrop-filter: blur(8px); }
.primary-button svg, .secondary-button svg { width: 18px; height: 18px; flex: 0 0 auto; }
.button-icon { width: 18px; height: 18px; }

.route-ribbon { position: relative; z-index: 2; width: min(1120px, calc(100% - 30px)); margin: -18px auto 0; background: var(--white); border-radius: 18px; box-shadow: var(--shadow); overflow: hidden; }
.route-track { display: grid; grid-template-columns: repeat(7, minmax(84px, 1fr)); overflow-x: auto; scrollbar-width: none; }
.route-track::-webkit-scrollbar { display: none; }
.route-stop { position: relative; min-width: 84px; padding: 18px 12px 17px; border: 0; border-right: 1px solid var(--line); background: transparent; text-align: left; color: var(--ink); cursor: pointer; }
.route-stop::before { content: ""; position: absolute; top: 16px; right: -4px; width: 7px; height: 7px; border-radius: 50%; background: var(--gold); z-index: 2; }
.route-stop:last-child::before { display: none; }
.route-stop span { display: block; color: var(--brick); font-size: 11px; font-weight: 800; letter-spacing: .08em; }
.route-stop strong { display: block; margin-top: 5px; font: 700 14px/1.3 var(--serif); }
.route-stop:hover, .route-stop[aria-current="true"] { background: #f3e8d8; }

main { width: min(1120px, calc(100% - 32px)); margin: 68px auto 0; }
.intro-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: clamp(34px, 7vw, 96px); align-items: start; margin-bottom: 86px; }
.section-number { color: var(--brick); font-weight: 800; letter-spacing: .12em; font-size: 12px; }
.section-title { margin: 10px 0 16px; font: 700 clamp(32px, 5.5vw, 54px)/1.1 var(--serif); letter-spacing: -.035em; text-wrap: balance; }
.section-lead { margin: 0; color: var(--ink-soft); font-size: 17px; max-width: 670px; }
.truth-list { margin-top: 10px; border-top: 1px solid var(--line); }
.truth-item { display: grid; grid-template-columns: 50px 1fr; gap: 15px; padding: 20px 0; border-bottom: 1px solid var(--line); }
.truth-icon { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 50%; color: var(--brick); background: rgba(168,61,47,.09); }
.truth-icon svg { width: 20px; height: 20px; }
.truth-item strong { display: block; font: 700 18px/1.3 var(--serif); }
.truth-item p { margin: 5px 0 0; color: var(--ink-soft); font-size: 14px; }
.note-poster { position: relative; min-height: 430px; padding: 34px; color: #fff; background: var(--ink); overflow: hidden; }
.note-poster::after { content: "安"; position: absolute; right: -18px; bottom: -64px; color: rgba(255,255,255,.05); font: 700 250px/1 var(--serif); }
.note-poster .seal { margin: 0 0 72px; color: #f0c16e; border-color: #f0c16e; }
.note-poster h3 { position: relative; z-index: 1; margin: 0; font: 700 31px/1.2 var(--serif); }
.note-poster p { position: relative; z-index: 1; color: rgba(255,255,255,.74); }
.note-poster small { position: absolute; left: 34px; bottom: 28px; color: #f0c16e; letter-spacing: .1em; }

.days-section { scroll-margin-top: 80px; }
.days-head { display: flex; justify-content: space-between; align-items: end; gap: 30px; margin-bottom: 26px; }
.days-head .section-title { margin-bottom: 0; }
.date-note { max-width: 300px; color: var(--ink-soft); font-size: 13px; text-align: right; }
.day-list { border-top: 1px solid var(--ink); }
.day-chapter { border-bottom: 1px solid var(--line); }
.day-toggle { width: 100%; border: 0; padding: 26px 2px; background: transparent; display: grid; grid-template-columns: 82px 1fr auto; align-items: center; gap: 18px; text-align: left; color: var(--ink); }
.day-toggle:hover .day-title { color: var(--brick); }
.day-index { color: var(--brick); font-weight: 800; font-size: 13px; letter-spacing: .08em; }
.day-title { margin: 0; font: 700 clamp(22px, 3.2vw, 31px)/1.2 var(--serif); transition: color .2s ease; }
.day-summary { display: block; margin-top: 5px; color: var(--ink-soft); font-size: 13px; }
.day-chevron { width: 36px; height: 36px; border: 1px solid var(--line); border-radius: 50%; display: grid; place-items: center; transition: transform .25s ease; }
.day-chevron svg { width: 17px; }
.day-toggle[aria-expanded="true"] .day-chevron { transform: rotate(180deg); background: var(--ink); color: #fff; }
.day-panel { display: none; padding: 0 0 42px 100px; }
.day-panel.is-open { display: block; animation: reveal .32s ease both; }
.day-motto { margin: 0 0 24px; padding-left: 18px; border-left: 3px solid var(--gold); font: 700 20px/1.45 var(--serif); }
.day-stats { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 18px; margin-bottom: 28px; color: var(--ink-soft); font-size: 13px; }
.day-stats > span { display: inline-flex; align-items: center; gap: 5px; }
.day-stats svg { width: 16px; height: 16px; flex: 0 0 auto; }
.energy { display: inline-flex; gap: 4px; align-items: center; }
.energy i { width: 18px; height: 5px; background: var(--paper-deep); border-radius: 4px; }
.energy i.on { background: var(--brick); }
.timeline { position: relative; margin: 0 0 30px; padding: 0; list-style: none; }
.timeline::before { content: ""; position: absolute; left: 65px; top: 12px; bottom: 20px; width: 1px; background: var(--line); }
.timeline-item { display: grid; grid-template-columns: 52px 20px 1fr; gap: 13px; padding: 0 0 26px; }
.timeline-time { padding-top: 1px; color: var(--brick); font-size: 12px; font-weight: 800; text-align: right; }
.timeline-dot { position: relative; z-index: 1; width: 11px; height: 11px; margin: 5px auto 0; border-radius: 50%; border: 3px solid var(--paper); background: var(--gold); box-shadow: 0 0 0 1px var(--gold); }
.timeline-copy strong { display: block; font-size: 16px; }
.timeline-copy p { margin: 4px 0 0; color: var(--ink-soft); font-size: 14px; }
.timeline-location { display: inline-flex; align-items: center; gap: 5px; margin-top: 8px; color: var(--green); font-size: 12px; text-decoration: none; font-weight: 700; }
.timeline-location svg { width: 14px; }
.plan-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 26px 0; }
.plan-block { padding: 22px; background: rgba(255,255,255,.52); border-top: 3px solid var(--green); }
.plan-block.alert { border-color: var(--brick); }
.plan-block h4, .options-block h4 { margin: 0 0 12px; font: 700 18px/1.3 var(--serif); }
.plan-block ul { margin: 0; padding-left: 18px; color: var(--ink-soft); font-size: 14px; }
.plan-block li + li { margin-top: 8px; }
.options-block { margin-top: 30px; }
.option-tabs { display: flex; gap: 8px; margin-bottom: 14px; overflow-x: auto; }
.option-tab { flex: 0 0 auto; border: 1px solid var(--line); color: var(--ink-soft); background: transparent; border-radius: 999px; padding: 8px 14px; cursor: pointer; }
.option-tab.is-active { color: #fff; border-color: var(--ink); background: var(--ink); }
.option-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.option-card { min-width: 0; padding: 18px; background: var(--white); border: 1px solid rgba(32,50,63,.1); }
.option-card b { display: block; font: 700 16px/1.35 var(--serif); }
.option-card p { min-height: 66px; margin: 8px 0; color: var(--ink-soft); font-size: 13px; }
.price { color: var(--brick); font-size: 12px; font-weight: 800; }
.map-link { display: inline-flex; align-items: center; gap: 5px; margin-top: 12px; color: var(--green); font-size: 12px; font-weight: 800; text-decoration: none; }
.map-link svg { width: 14px; }
.easter-egg { margin-top: 24px; padding: 18px 20px; color: var(--brick-dark); border: 1px dashed rgba(168,61,47,.48); background: rgba(215,155,67,.1); font-family: var(--serif); }
.tomorrow { margin-top: 22px; color: var(--ink-soft); font-size: 14px; }
.tomorrow strong { color: var(--ink); }

.guide-section { margin-top: 100px; scroll-margin-top: 80px; }
.guide-layout { display: grid; grid-template-columns: .72fr 1.28fr; gap: 48px; margin-top: 30px; }
.guide-menu { position: sticky; top: 26px; align-self: start; border-top: 1px solid var(--ink); }
.guide-menu button { width: 100%; padding: 16px 2px; border: 0; border-bottom: 1px solid var(--line); background: transparent; color: var(--ink-soft); display: flex; justify-content: space-between; text-align: left; cursor: pointer; }
.guide-menu button.is-active { color: var(--brick); font-weight: 800; }
.guide-pane { display: none; }
.guide-pane.is-active { display: block; animation: reveal .28s ease both; }
.booking-list { border-top: 1px solid var(--line); }
.booking-item { display: grid; grid-template-columns: 86px 1fr; gap: 20px; padding: 19px 0; border-bottom: 1px solid var(--line); }
.booking-when { color: var(--brick); font-weight: 800; }
.booking-item strong { display: block; }
.booking-item p { margin: 4px 0 0; color: var(--ink-soft); font-size: 14px; }
.budget-bars { display: grid; gap: 17px; }
.budget-row { padding-bottom: 15px; border-bottom: 1px solid var(--line); }
.budget-row-head { display: flex; justify-content: space-between; gap: 16px; font-weight: 800; }
.budget-row p { margin: 5px 0 0; color: var(--ink-soft); font-size: 13px; }
.budget-total { margin-top: 24px; padding: 24px; color: #fff; background: var(--ink); }
.budget-total b { display: block; margin-top: 4px; color: #f1c36e; font: 700 34px/1.1 var(--serif); }
.check-groups { display: grid; gap: 24px; }
.check-group h4 { margin: 0 0 9px; font: 700 19px/1.3 var(--serif); }
.check-row { width: 100%; display: flex; gap: 12px; align-items: center; padding: 11px 0; border: 0; border-bottom: 1px solid var(--line); background: transparent; color: var(--ink); text-align: left; }
.check-box { width: 22px; height: 22px; flex: 0 0 auto; border: 1px solid var(--ink-soft); display: grid; place-items: center; }
.check-row.is-done { color: #7c8588; text-decoration: line-through; }
.check-row.is-done .check-box { color: #fff; border-color: var(--green); background: var(--green); }
.check-box svg { width: 15px; opacity: 0; }
.check-row.is-done svg { opacity: 1; }
.transport-list { display: grid; gap: 14px; counter-reset: rules; }
.transport-rule { display: grid; grid-template-columns: 42px 1fr; gap: 14px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.transport-rule::before { counter-increment: rules; content: "0" counter(rules); color: var(--brick); font-weight: 800; }
.hotel-list { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.hotel-row { padding: 20px; background: var(--white); }
.hotel-row b { display: block; font: 700 18px/1.3 var(--serif); }
.hotel-row p { margin: 7px 0; color: var(--ink-soft); font-size: 13px; }

.no-huashan { margin-top: 92px; display: grid; grid-template-columns: 1fr 1fr; min-height: 360px; background: var(--brick); color: #fff; }
.no-huashan-image { min-height: 300px; background: linear-gradient(rgba(15,27,33,.08), rgba(15,27,33,.42)), url("assets/city-wall.jpg") center/cover; }
.no-huashan-copy { padding: clamp(30px, 6vw, 64px); display: flex; flex-direction: column; justify-content: center; }
.no-huashan-copy .section-number { color: #f5d18d; }
.no-huashan-copy h2 { margin: 12px 0; font: 700 clamp(28px, 4vw, 46px)/1.1 var(--serif); }
.no-huashan-copy p { color: rgba(255,255,255,.82); }

.footer { margin-top: 70px; padding: 34px 0 110px; border-top: 1px solid var(--line); color: var(--ink-soft); font-size: 12px; }
.footer-inner { width: min(1120px, calc(100% - 32px)); margin: auto; display: flex; justify-content: space-between; gap: 20px; }
.footer strong { color: var(--ink); }
.credits { max-width: 480px; text-align: right; }

.bottom-nav { position: fixed; z-index: 40; left: 50%; bottom: max(14px, env(safe-area-inset-bottom)); transform: translateX(-50%); width: min(420px, calc(100% - 24px)); height: 64px; padding: 7px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 4px; border: 1px solid rgba(255,255,255,.2); border-radius: 999px; color: #fff; background: rgba(26,39,46,.94); box-shadow: 0 16px 40px rgba(20,28,32,.28); backdrop-filter: blur(16px); }
.nav-button { border: 0; border-radius: 999px; color: rgba(255,255,255,.68); background: transparent; display: grid; place-items: center; align-content: center; gap: 2px; font-size: 11px; }
.nav-button svg { width: 19px; height: 19px; }
.nav-button.is-active { color: #fff; background: var(--brick); }
.toast { position: fixed; z-index: 100; left: 50%; bottom: 96px; transform: translate(-50%, 20px); max-width: calc(100% - 40px); padding: 10px 16px; border-radius: 999px; color: #fff; background: var(--ink); opacity: 0; pointer-events: none; transition: .24s ease; font-size: 13px; }
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.error-screen { min-height: 100vh; display: grid; place-content: center; padding: 30px; text-align: center; }
.error-screen h1 { font-size: 34px; }

@keyframes reveal { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

button:focus-visible, a:focus-visible { outline: 3px solid #f0bd5d; outline-offset: 3px; }

@media (max-width: 760px) {
  .hero { min-height: 720px; }
  .hero-inner { width: calc(100% - 32px); padding-top: 18px; }
  .hero-media { object-position: 62% center; }
  .hero-copy { padding-bottom: 18px; }
  .hero-subtitle { max-width: 330px; }
  .crew { margin-top: 24px; }
  .route-ribbon { width: calc(100% - 20px); }
  main { width: calc(100% - 28px); margin-top: 54px; }
  .intro-grid, .guide-layout, .no-huashan { grid-template-columns: 1fr; }
  .intro-grid { gap: 34px; margin-bottom: 66px; }
  .note-poster { min-height: 360px; }
  .days-head { display: block; }
  .date-note { margin-top: 12px; text-align: left; }
  .day-toggle { grid-template-columns: 58px 1fr auto; gap: 10px; padding: 22px 0; }
  .day-summary { max-width: 230px; white-space: nowrap; text-overflow: ellipsis; overflow: hidden; }
  .day-panel { padding-left: 0; }
  .plan-grid, .option-list { grid-template-columns: 1fr; }
  .option-card p { min-height: 0; }
  .guide-menu { position: static; display: flex; overflow-x: auto; border-top: 0; border-bottom: 1px solid var(--line); }
  .guide-menu button { width: auto; flex: 0 0 auto; padding: 12px 16px; border-bottom: 0; }
  .booking-item { grid-template-columns: 72px 1fr; gap: 14px; }
  .no-huashan-image { min-height: 250px; }
  .footer-inner { display: block; }
  .credits { margin-top: 14px; text-align: left; }
}

@media (max-width: 390px) {
  h1 { font-size: 48px; }
  .hero-actions { display: grid; }
  .primary-button, .secondary-button { width: 100%; }
  .crew-label { font-size: 12px; }
  .day-toggle { grid-template-columns: 52px 1fr 32px; }
  .day-chevron { width: 32px; height: 32px; }
  .timeline::before { left: 58px; }
  .timeline-item { grid-template-columns: 45px 18px 1fr; gap: 10px; }
  .timeline-copy p { font-size: 13px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
}