:root {
  --bg: #f4f7f5;
  --bg-2: #ecf3ef;
  --surface: #ffffff;
  --surface-2: #fbfdfc;
  --ink: #11302b;
  --ink-soft: #4f6e67;
  --ink-faint: #88a39b;
  --teal: #109a8c;
  --teal-deep: #0a6a61;
  --teal-soft: #e1f2ee;
  --gold: #bd9a51;
  --gold-deep: #9a7c3b;
  --gold-soft: #f4ecd6;
  --line: #e5ede9;
  --line-strong: #d6e3dd;
  --radius: 20px;
  --radius-sm: 13px;
  --font-serif: "Noto Serif SC", "Songti SC", "STSong", Georgia, "Times New Roman", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  --shadow-sm: 0 1px 2px rgba(16, 48, 43, 0.04), 0 6px 18px -10px rgba(16, 48, 43, 0.20);
  --shadow: 0 2px 6px rgba(16, 48, 43, 0.05), 0 20px 44px -22px rgba(16, 48, 43, 0.32);
  --shadow-lg: 0 4px 10px rgba(16, 48, 43, 0.06), 0 34px 64px -26px rgba(16, 48, 43, 0.40);
  --ease: cubic-bezier(0.22, 0.7, 0.22, 1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 84px; }

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* 细腻颗粒质感 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

a { color: inherit; text-decoration: none; }

::selection { background: var(--teal-soft); color: var(--teal-deep); }

/* ============ Nav ============ */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(244, 247, 245, 0.72);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, background 0.3s, box-shadow 0.3s;
}
.nav.is-scrolled {
  border-color: var(--line);
  box-shadow: 0 8px 24px -20px rgba(16, 48, 43, 0.5);
}
.nav__inner {
  max-width: 1040px;
  margin: 0 auto;
  padding: 13px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav__brand {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.12rem;
  letter-spacing: 0.02em;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.nav__brand-mark { font-family: var(--font-sans); }
.nav__links { display: flex; gap: 4px; align-items: center; }
.nav__links a {
  position: relative;
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 0.92rem;
  color: var(--ink-soft);
  transition: color 0.18s, background 0.18s;
}
.nav__links a:not(.nav__cta):hover { color: var(--teal-deep); }
.nav__links a.is-active:not(.nav__cta) { color: var(--teal-deep); }
.nav__links a.is-active:not(.nav__cta)::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 1px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--teal);
  transform: translateX(-50%);
}
.nav__cta {
  background: var(--teal);
  color: #fff !important;
  box-shadow: 0 8px 18px -10px rgba(16, 154, 140, 0.9);
  transition: background 0.18s, transform 0.12s, box-shadow 0.18s;
}
.nav__cta:hover { background: var(--teal-deep) !important; transform: translateY(-1px); }
.nav__progress {
  position: absolute;
  left: 0;
  bottom: -1px;
  height: 2px;
  width: 0;
  background: linear-gradient(90deg, var(--teal), var(--gold));
  transition: width 0.1s linear;
}

/* ============ Hero ============ */
.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, #e9f6f1 0%, var(--bg) 64%);
  border-bottom: 1px solid var(--line);
}
.hero__bg { position: absolute; inset: 0; pointer-events: none; }
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.55;
}
.orb--teal {
  width: 460px; height: 460px;
  top: -180px; right: -80px;
  background: radial-gradient(circle, rgba(16, 154, 140, 0.55), transparent 68%);
}
.orb--gold {
  width: 380px; height: 380px;
  top: 40px; left: -140px;
  background: radial-gradient(circle, rgba(189, 154, 81, 0.40), transparent 68%);
}
.hero__inner {
  position: relative;
  z-index: 2;
  max-width: 1040px;
  margin: 0 auto;
  padding: 96px 24px 104px;
  text-align: center;
}
.hero__eyebrow {
  font-family: var(--font-sans);
  text-transform: uppercase;
  letter-spacing: 0.32em;
  font-size: 0.74rem;
  color: var(--gold-deep);
  margin: 0 0 18px;
  font-weight: 600;
  padding-left: 0.32em;
}
.hero__title {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(2.8rem, 7.5vw, 4.6rem);
  line-height: 1.05;
  margin: 0;
  letter-spacing: 0.03em;
  background: linear-gradient(180deg, #16453d 0%, #0a6a61 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero__subtitle {
  color: var(--ink-soft);
  font-size: 1.16rem;
  margin: 16px auto 26px;
  max-width: 30ch;
}
.hero__meta {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 20px;
}
.chip {
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: 7px 16px;
  font-size: 0.9rem;
  color: var(--ink-soft);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(6px);
}
.hero__status { margin-bottom: 30px; }
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  background: linear-gradient(135deg, var(--teal), var(--teal-deep));
  color: #fff;
  padding: 9px 20px;
  border-radius: 999px;
  font-weight: 600;
  letter-spacing: 0.01em;
  box-shadow: 0 14px 30px -14px rgba(16, 154, 140, 0.9);
}
.status-badge--soon { background: linear-gradient(135deg, #d99a4a, var(--gold-deep)); box-shadow: 0 14px 30px -14px rgba(189, 154, 81, 0.9); }
.status-badge--done { background: linear-gradient(135deg, #9bb0aa, #7c918b); box-shadow: none; }
.status-badge .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: #fff;
  box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.7);
  animation: pulse 1.8s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.6); }
  70% { box-shadow: 0 0 0 8px rgba(255, 255, 255, 0); }
  100% { box-shadow: 0 0 0 0 rgba(255, 255, 255, 0); }
}

.hero__actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.98rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.14s var(--ease), background 0.18s, box-shadow 0.18s, border-color 0.18s;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn__arrow { transition: transform 0.18s var(--ease); }
.btn:hover .btn__arrow { transform: translateX(4px); }
.btn--primary { background: linear-gradient(135deg, var(--teal), var(--teal-deep)); color: #fff; box-shadow: 0 16px 32px -16px rgba(16, 154, 140, 0.95); }
.btn--primary:hover { box-shadow: 0 20px 38px -16px rgba(16, 154, 140, 1); }
.btn--ghost { background: rgba(255, 255, 255, 0.8); color: var(--teal-deep); border-color: var(--line-strong); }
.btn--ghost:hover { border-color: var(--teal); }
.btn--small { padding: 10px 18px; font-size: 0.9rem; }

/* ============ Sections ============ */
.section {
  max-width: 1040px;
  margin: 0 auto;
  padding: 72px 24px 8px;
}
.section__head { margin-bottom: 28px; }
.section__eyebrow {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gold-deep);
  font-weight: 600;
  margin-bottom: 6px;
}
.section__title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(1.5rem, 3.2vw, 1.95rem);
  margin: 0;
  letter-spacing: 0.02em;
}
.section__lead { color: var(--ink-soft); margin: 12px 0 0; max-width: 50ch; }

/* ============ Stats ============ */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 16px;
}
.stat {
  position: relative;
  background: linear-gradient(180deg, var(--surface), var(--surface-2));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 22px 20px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform 0.22s var(--ease), box-shadow 0.22s, border-color 0.22s;
}
.stat::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 3px;
  background: linear-gradient(90deg, var(--teal), var(--gold));
  opacity: 0;
  transition: opacity 0.22s;
}
.stat:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--line-strong); }
.stat:hover::before { opacity: 1; }
.stat__num {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 2.1rem;
  line-height: 1;
  color: var(--teal-deep);
  font-variant-numeric: tabular-nums;
}
.stat__label { color: var(--ink-soft); font-size: 0.9rem; margin-top: 8px; }

/* ============ Cards ============ */
.cards { display: grid; gap: 18px; }
.card {
  background: linear-gradient(180deg, var(--surface), var(--surface-2));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 26px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.22s var(--ease), box-shadow 0.22s, border-color 0.22s;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--line-strong); }
.card--tbd {
  background:
    linear-gradient(180deg, rgba(255,255,255,0.6), rgba(251,253,252,0.6)),
    repeating-linear-gradient(135deg, #f1f6f4, #f1f6f4 11px, #eaf1ee 11px, #eaf1ee 22px);
  border-style: dashed;
  border-color: var(--line-strong);
  box-shadow: none;
}
.card--tbd:hover { transform: none; box-shadow: none; }

/* flight */
.flight { display: flex; align-items: center; justify-content: space-between; gap: 22px; flex-wrap: wrap; }
.flight__route { display: flex; align-items: center; gap: 20px; }
.flight__point { text-align: center; min-width: 66px; }
.flight__time {
  font-family: var(--font-serif);
  font-size: 1.7rem;
  font-weight: 700;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.01em;
}
.flight__code { color: var(--ink-soft); font-size: 0.82rem; letter-spacing: 0.12em; margin-top: 2px; font-weight: 600; }
.flight__city { color: var(--ink-faint); font-size: 0.8rem; }
.flight__path { color: var(--teal); font-size: 1.3rem; position: relative; }
.flight__path::before { content: ""; display: block; width: 46px; height: 1px; background: linear-gradient(90deg, transparent, var(--teal), transparent); margin-bottom: 4px; }
.flight__info { text-align: right; }
.flight__no { font-weight: 700; font-size: 1.08rem; display: flex; align-items: center; gap: 8px; justify-content: flex-end; }
.flight__date { color: var(--ink-soft); font-size: 0.9rem; }

/* hotel */
.hotel { display: flex; justify-content: space-between; align-items: flex-start; gap: 18px; flex-wrap: wrap; }
.hotel__name { font-family: var(--font-serif); font-size: 1.22rem; font-weight: 700; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.hotel__area { color: var(--ink-soft); font-size: 0.9rem; margin-top: 6px; }
.hotel__dates { text-align: right; color: var(--ink-soft); font-size: 0.9rem; white-space: nowrap; }
.hotel__nights {
  display: inline-block; margin-top: 8px;
  background: var(--gold-soft); color: var(--gold-deep);
  padding: 3px 12px; border-radius: 999px; font-size: 0.82rem; font-weight: 700;
}

/* tags */
.tag { display: inline-block; padding: 2px 11px; border-radius: 999px; font-size: 0.76rem; font-weight: 700; letter-spacing: 0.02em; }
.tag--ok { background: var(--teal-soft); color: var(--teal-deep); }
.tag--tbd { background: #fbf0db; color: var(--gold-deep); }

/* ============ Timeline ============ */
.timeline { position: relative; padding-left: 6px; }
.tl-day {
  position: relative;
  padding: 0 0 30px 36px;
  margin-left: 9px;
}
.tl-day::before {
  content: "";
  position: absolute;
  left: 0; top: 6px; bottom: -6px;
  width: 2px;
  background: linear-gradient(180deg, var(--teal), var(--line-strong));
}
.tl-day:last-child::before { background: linear-gradient(180deg, var(--teal), transparent); }
.tl-day__node {
  position: absolute;
  left: -8px; top: 3px;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--surface);
  border: 3px solid var(--teal);
  box-shadow: 0 0 0 4px rgba(16, 154, 140, 0.1);
}
.tl-day--tbd .tl-day__node { border-color: var(--gold); border-style: dashed; box-shadow: 0 0 0 4px rgba(189, 154, 81, 0.1); }
.tl-day__head { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; margin-bottom: 4px; }
.tl-day__date { font-family: var(--font-serif); font-weight: 700; color: var(--teal-deep); font-size: 1.02rem; }
.tl-day__weekday { color: var(--ink-faint); font-size: 0.84rem; }
.tl-day__title { font-family: var(--font-serif); font-size: 1.2rem; font-weight: 700; }
.tl-day__summary { color: var(--ink-soft); font-size: 0.94rem; margin-bottom: 12px; }
.tl-items { list-style: none; margin: 0; padding: 0; display: grid; gap: 9px; }
.tl-item {
  display: flex; gap: 13px; align-items: center;
  background: linear-gradient(180deg, var(--surface), var(--surface-2));
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 11px 16px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.18s var(--ease), border-color 0.18s;
}
.tl-item:hover { transform: translateX(3px); border-color: var(--line-strong); }
.tl-item__time { font-variant-numeric: tabular-nums; color: var(--teal-deep); font-weight: 700; min-width: 46px; font-size: 0.9rem; }
.tl-item__icon {
  font-size: 0.95rem;
  width: 30px; height: 30px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--teal-soft);
  border-radius: 9px;
  flex-shrink: 0;
}
.suggestions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; color: var(--ink-soft); font-size: 0.88rem; align-items: center; }
.suggestion { background: var(--surface); border: 1px dashed var(--line-strong); color: var(--ink-soft); padding: 5px 13px; border-radius: 999px; font-size: 0.85rem; }

/* ============ Subscribe ============ */
.section--subscribe { padding-bottom: 48px; }
.subscribe-card {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #0f9d8f 0%, #0a6a61 100%);
  color: #fff;
  border-radius: var(--radius);
  padding: 34px 32px;
  box-shadow: var(--shadow-lg);
}
.subscribe-card::before {
  content: "";
  position: absolute;
  top: -60px; right: -40px;
  width: 260px; height: 260px;
  background: radial-gradient(circle, rgba(189, 154, 81, 0.45), transparent 65%);
  pointer-events: none;
}
.subscribe-card > * { position: relative; }
.subscribe-card .btn--primary { background: #fff; color: var(--teal-deep); box-shadow: 0 16px 32px -16px rgba(0, 0, 0, 0.45); }
.subscribe-card .btn--primary:hover { background: var(--gold-soft); }
.subscribe-card .btn--ghost { background: rgba(255, 255, 255, 0.12); color: #fff; border-color: rgba(255, 255, 255, 0.45); }
.subscribe-card .btn--ghost:hover { background: rgba(255, 255, 255, 0.22); border-color: rgba(255, 255, 255, 0.7); }
.subscribe-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 0 0 18px; }
.subscribe-url {
  display: flex; align-items: center; gap: 10px;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 12px;
  padding: 11px 16px;
  font-size: 0.88rem;
  word-break: break-all;
}
.subscribe-url code { font-family: ui-monospace, "SF Mono", Menlo, monospace; }
.subscribe-help { margin-top: 18px; font-size: 0.9rem; opacity: 0.95; }
.subscribe-help summary { cursor: pointer; font-weight: 600; list-style: none; display: inline-flex; align-items: center; gap: 6px; }
.subscribe-help summary::-webkit-details-marker { display: none; }
.subscribe-help summary::before { content: "▸"; transition: transform 0.2s; }
.subscribe-help[open] summary::before { transform: rotate(90deg); }
.subscribe-help ol { margin: 10px 0 0; padding-left: 22px; line-height: 1.9; }
.subscribe-note {
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 12px; padding: 12px 16px; margin-top: 16px; font-size: 0.88rem;
}

/* ============ Footer ============ */
.footer {
  max-width: 1040px;
  margin: 48px auto 0;
  padding: 36px 24px 56px;
  border-top: 1px solid var(--line);
  color: var(--ink-faint);
  font-size: 0.86rem;
  text-align: center;
}
.footer__mark { font-size: 1.5rem; margin-bottom: 8px; opacity: 0.7; }

/* ============ Reveal ============ */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }

/* ============ Toast ============ */
.toast {
  position: fixed;
  bottom: 28px; left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--ink);
  color: #fff;
  padding: 12px 24px;
  border-radius: 999px;
  font-size: 0.9rem;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.22s, transform 0.22s var(--ease);
  z-index: 100;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ============ Responsive ============ */
@media (max-width: 640px) {
  .nav__links a:not(.nav__cta) { display: none; }
  .hero__inner { padding: 76px 22px 84px; }
  .flight__info { text-align: left; }
  .flight__no { justify-content: flex-start; }
  .hotel__dates { text-align: left; }
  .section { padding-top: 56px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .status-badge .dot { animation: none; }
  * { transition-duration: 0.01ms !important; }
}