/* ============ 基础与变量 ============ */
:root {
  --ink: #2c2420;
  --ink-soft: #6b5d54;
  --cream: #fdf9f3;
  --cream-2: #f7efe4;
  --terracotta: #c96f4a;
  --terracotta-dark: #a8552f;
  --gold: #d9a441;
  --sea: #2f6f6b;
  --sea-deep: #1f4a47;
  --white: #ffffff;
  --radius: 18px;
  --shadow: 0 10px 30px rgba(44, 36, 32, 0.10);
  --shadow-lg: 0 20px 50px rgba(44, 36, 32, 0.16);
  --font-display: "Playfair Display", "Noto Serif SC", serif;
  --font-body: "Inter", "Noto Serif SC", -apple-system, "Segoe UI", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--cream);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

/* ============ 导航 ============ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: background .35s, box-shadow .35s, backdrop-filter .35s;
}
.nav.scrolled {
  background: rgba(253, 249, 243, 0.92);
  backdrop-filter: blur(12px);
  box-shadow: 0 2px 20px rgba(44, 36, 32, 0.08);
}
.nav-inner {
  max-width: 1120px; margin: 0 auto; padding: 0 24px;
  height: 68px; display: flex; align-items: center; justify-content: space-between;
}
.nav-logo {
  font-family: var(--font-display);
  font-size: 1.25rem; font-weight: 700; letter-spacing: .02em;
  color: var(--white); text-decoration: none; transition: color .35s;
}
.nav-logo span { color: var(--gold); }
.nav.scrolled .nav-logo { color: var(--ink); }
.nav-links { display: flex; gap: 28px; list-style: none; }
.nav-links a {
  color: rgba(255, 255, 255, 0.92); text-decoration: none;
  font-size: .92rem; font-weight: 500; letter-spacing: .04em;
  padding: 6px 0; position: relative; transition: color .35s;
}
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 0; height: 2px; background: var(--gold); transition: width .3s;
}
.nav-links a:hover::after { width: 100%; }
.nav.scrolled .nav-links a { color: var(--ink-soft); }
.nav.scrolled .nav-links a:hover { color: var(--terracotta); }

.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span {
  display: block; width: 24px; height: 2px; margin: 5px 0;
  background: var(--white); transition: background .35s;
}
.nav.scrolled .nav-toggle span { background: var(--ink); }

/* ============ Hero ============ */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  text-align: center; overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; object-position: center;
}
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(31, 26, 23, 0.45) 0%, rgba(31, 26, 23, 0.25) 45%, rgba(31, 26, 23, 0.65) 100%);
}
.hero-content { position: relative; z-index: 2; color: var(--white); padding: 120px 24px 80px; }
.hero-eyebrow {
  font-size: .85rem; letter-spacing: .35em; text-transform: uppercase;
  color: var(--gold); margin-bottom: 18px; font-weight: 600;
}
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 4.2rem); font-weight: 700;
  line-height: 1.2; margin-bottom: 16px; text-shadow: 0 2px 24px rgba(0,0,0,.35);
}
.hero-title em { font-style: italic; color: var(--gold); }
.hero-sub { font-size: clamp(1rem, 2vw, 1.2rem); color: rgba(255,255,255,.88); margin-bottom: 42px; letter-spacing: .06em; }

.countdown { display: flex; justify-content: center; align-items: flex-start; gap: 10px; margin-bottom: 12px; }
.count-box {
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.28);
  backdrop-filter: blur(8px);
  border-radius: 14px; padding: 14px 18px; min-width: 78px;
}
.count-num { display: block; font-family: var(--font-display); font-size: 2rem; font-weight: 700; line-height: 1.1; }
.count-label { font-size: .75rem; letter-spacing: .2em; color: rgba(255,255,255,.75); }
.count-sep { font-family: var(--font-display); font-size: 1.8rem; padding-top: 14px; opacity: .7; }
.countdown-note { font-size: .85rem; color: rgba(255,255,255,.7); letter-spacing: .12em; margin-bottom: 40px; }

.hero-cta {
  display: inline-block; padding: 14px 38px; border-radius: 999px;
  background: var(--terracotta); color: var(--white); text-decoration: none;
  font-weight: 600; letter-spacing: .08em; transition: transform .25s, background .25s, box-shadow .25s;
  box-shadow: 0 8px 24px rgba(201, 111, 74, .45);
}
.hero-cta:hover { background: var(--terracotta-dark); transform: translateY(-2px); box-shadow: 0 12px 30px rgba(201,111,74,.55); }

/* ============ 通用区块 ============ */
.section { padding: 96px 0; }
.section-alt { background: var(--cream-2); }
.section-eyebrow {
  font-family: var(--font-display); font-style: italic;
  color: var(--terracotta); letter-spacing: .25em; text-transform: uppercase;
  font-size: .85rem; text-align: center; margin-bottom: 8px;
}
.section-title {
  font-family: var(--font-display); font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700; text-align: center; margin-bottom: 14px;
}
.section-desc { text-align: center; color: var(--ink-soft); max-width: 640px; margin: 0 auto 56px; }

/* 滚动显现 */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ============ 概览卡片 ============ */
.facts-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.fact-card {
  background: var(--white); border-radius: var(--radius); padding: 30px 22px;
  text-align: center; box-shadow: var(--shadow); transition: transform .3s, box-shadow .3s;
}
.fact-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.fact-icon { font-size: 2rem; margin-bottom: 12px; }
.fact-card h3 { font-family: var(--font-display); font-size: 1.2rem; margin-bottom: 8px; }
.fact-card p { font-size: .88rem; color: var(--ink-soft); }

/* ============ 航班卡片 ============ */
.flight-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.flight-card {
  background: var(--white); border-radius: var(--radius); padding: 28px 22px;
  box-shadow: var(--shadow); position: relative; overflow: hidden;
  transition: transform .3s, box-shadow .3s;
}
.flight-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, var(--sea), var(--gold));
}
.flight-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.flight-main { background: var(--sea-deep); color: var(--white); }
.flight-main .flight-note, .flight-main .flight-date { color: rgba(255,255,255,.75); }
.flight-dir { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.flight-code { font-family: var(--font-display); font-weight: 700; font-size: 1.35rem; letter-spacing: .06em; }
.flight-arrow { color: var(--gold); font-size: 1.1rem; }
.flight-card h3 { font-size: 1rem; margin-bottom: 6px; }
.flight-date { font-size: .82rem; color: var(--ink-soft); margin-bottom: 2px; }
.flight-time { font-family: var(--font-display); font-size: 1.25rem; font-weight: 700; color: var(--terracotta); margin-bottom: 10px; }
.flight-main .flight-time { color: var(--gold); }
.flight-note { font-size: .78rem; color: var(--ink-soft); line-height: 1.55; }

/* ============ 行程分段标签 ============ */
.day-tabs { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-bottom: 40px; }
.day-tab {
  border: 1.5px solid rgba(44, 36, 32, 0.18); background: var(--white);
  border-radius: 999px; padding: 10px 22px; cursor: pointer;
  font-family: var(--font-body); font-size: .88rem; font-weight: 500;
  color: var(--ink-soft); line-height: 1.4; transition: all .25s;
}
.day-tab:hover { border-color: var(--terracotta); color: var(--terracotta); }
.day-tab.active {
  background: var(--terracotta); border-color: var(--terracotta);
  color: var(--white); box-shadow: 0 6px 18px rgba(201, 111, 74, .35);
}

.day-panel { display: none; animation: fadeUp .45s ease; }
.day-panel.active { display: block; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }

.hotel-banner {
  background: linear-gradient(135deg, var(--sea-deep), var(--sea));
  color: var(--white); border-radius: var(--radius);
  padding: 26px 30px; margin-bottom: 28px; box-shadow: var(--shadow);
}
.hotel-tag {
  display: inline-block; font-size: .7rem; letter-spacing: .2em;
  background: var(--gold); color: var(--sea-deep); font-weight: 700;
  border-radius: 999px; padding: 3px 12px; margin-bottom: 8px; text-transform: uppercase;
}
.hotel-banner h3 { font-family: var(--font-display); font-size: 1.4rem; }
.hotel-meta { font-size: .88rem; color: rgba(255,255,255,.82); margin-top: 6px; }
.hotel-addr { font-size: .8rem; color: rgba(255,255,255,.75); margin-top: 8px; word-break: break-all; }
.hotel-taxi {
  font-size: .8rem; color: var(--sea-deep); background: var(--gold);
  display: inline-block; border-radius: 8px; padding: 4px 12px; margin-top: 10px; font-weight: 500;
}

.day-item {
  background: var(--white); border-radius: var(--radius); padding: 26px 30px;
  margin-bottom: 18px; box-shadow: var(--shadow);
  border-left: 4px solid var(--gold);
}
.day-date { font-size: .8rem; letter-spacing: .18em; color: var(--terracotta); font-weight: 600; text-transform: uppercase; margin-bottom: 4px; }
.day-item h4 { font-family: var(--font-display); font-size: 1.15rem; margin-bottom: 12px; }
.day-list { list-style: none; }
.day-list li {
  padding: 7px 0; color: var(--ink-soft); font-size: .93rem;
  display: flex; gap: 12px; border-bottom: 1px dashed rgba(44,36,32,.08);
}
.day-list li:last-child { border-bottom: none; }
.day-list .t { flex: 0 0 58px; color: var(--sea); font-weight: 600; font-size: .85rem; padding-top: 2px; }

/* ============ 目的地 ============ */
.dest-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.dest-card {
  background: var(--white); border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow); transition: transform .3s, box-shadow .3s;
}
.dest-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.dest-img { height: 230px; overflow: hidden; }
.dest-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.dest-card:hover .dest-img img { transform: scale(1.06); }
.dest-body { padding: 24px 26px 26px; }
.dest-body h3 { font-family: var(--font-display); font-size: 1.3rem; margin-bottom: 8px; }
.dest-body p { font-size: .92rem; color: var(--ink-soft); margin-bottom: 14px; }
.dest-tag {
  display: inline-block; font-size: .75rem; font-weight: 600; letter-spacing: .08em;
  color: var(--sea-deep); background: rgba(47, 111, 107, .12);
  border-radius: 999px; padding: 4px 14px;
}

/* ============ 浪漫体验 ============ */
.exp-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.exp-card {
  background: var(--white); border-radius: var(--radius); padding: 28px 22px;
  box-shadow: var(--shadow); transition: transform .3s, box-shadow .3s;
}
.exp-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.exp-icon { font-size: 1.8rem; display: block; margin-bottom: 12px; }
.exp-card h3 { font-family: var(--font-display); font-size: 1.05rem; margin-bottom: 8px; }
.exp-card p { font-size: .85rem; color: var(--ink-soft); }

/* ============ 预算 ============ */
.budget-wrap { display: grid; grid-template-columns: 1.4fr 1fr; gap: 30px; align-items: start; }
.budget-table { background: var(--white); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.budget-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 15px 28px; border-bottom: 1px solid rgba(44,36,32,.07);
}
.budget-item { color: var(--ink-soft); font-size: .93rem; }
.tag {
  font-style: normal; font-size: .68rem; font-weight: 700; letter-spacing: .05em;
  border-radius: 999px; padding: 2px 10px; margin-left: 8px; vertical-align: 1px; white-space: nowrap;
}
.tag-paid { background: rgba(47, 111, 107, .14); color: var(--sea); }
.tag-est { background: rgba(201, 111, 74, .14); color: var(--terracotta-dark); }
.budget-val { font-weight: 600; font-family: var(--font-display); }
.budget-total { background: var(--cream-2); border-bottom: none; }
.budget-total .budget-item { color: var(--ink); font-weight: 700; }
.budget-total .budget-val { color: var(--terracotta); font-size: 1.2rem; }

.budget-tips {
  background: linear-gradient(150deg, var(--sea-deep), var(--sea));
  color: var(--white); border-radius: var(--radius); padding: 30px; box-shadow: var(--shadow);
}
.budget-tips h3 { font-family: var(--font-display); font-size: 1.2rem; margin-bottom: 14px; color: var(--gold); }
.budget-tips ul { list-style: none; }
.budget-tips li {
  font-size: .88rem; color: rgba(255,255,255,.88); padding: 7px 0 7px 22px; position: relative;
}
.budget-tips li::before { content: "\2726"; position: absolute; left: 0; color: var(--gold); }

/* ============ 落地签 ============ */
.visa-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-bottom: 24px; }
.visa-card { background: var(--white); border-radius: var(--radius); padding: 30px; box-shadow: var(--shadow); }
.visa-card h3 { font-family: var(--font-display); font-size: 1.15rem; margin-bottom: 16px; padding-bottom: 12px; border-bottom: 2px solid var(--gold); }
.visa-list { list-style: none; }
.visa-list li {
  font-size: .9rem; color: var(--ink-soft); padding: 7px 0 7px 22px; position: relative;
}
.visa-list li::before { content: "\2714"; position: absolute; left: 0; color: var(--sea); font-size: .8rem; }
.visa-steps { list-style: none; counter-reset: step; }
.visa-steps li {
  font-size: .9rem; color: var(--ink-soft); padding: 8px 0 8px 40px; position: relative;
  counter-increment: step;
}
.visa-steps li::before {
  content: counter(step);
  position: absolute; left: 0; top: 8px;
  width: 26px; height: 26px; border-radius: 50%;
  background: var(--terracotta); color: var(--white);
  font-size: .8rem; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.visa-note {
  background: linear-gradient(150deg, var(--sea-deep), var(--sea));
  color: rgba(255,255,255,.9); border-radius: var(--radius);
  padding: 26px 30px; box-shadow: var(--shadow); font-size: .9rem;
}
.visa-note p + p { margin-top: 12px; }
.visa-note strong { color: var(--gold); }
.visa-note em { font-style: normal; color: var(--gold); font-family: var(--font-display); }

/* ============ 行前清单 ============ */
.check-progress { max-width: 520px; margin: 0 auto 44px; display: flex; align-items: center; gap: 16px; }
.check-bar { flex: 1; height: 10px; background: rgba(44,36,32,.1); border-radius: 999px; overflow: hidden; }
.check-fill { height: 100%; width: 0%; background: linear-gradient(90deg, var(--terracotta), var(--gold)); border-radius: 999px; transition: width .4s ease; }
.check-text { font-size: .85rem; color: var(--ink-soft); font-weight: 600; min-width: 52px; text-align: right; }

.check-cols { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.check-group { background: var(--white); border-radius: var(--radius); padding: 24px 22px; box-shadow: var(--shadow); }
.check-group h3 { font-family: var(--font-display); font-size: 1.05rem; margin-bottom: 14px; padding-bottom: 10px; border-bottom: 2px solid var(--gold); }
.check-item {
  display: flex; align-items: flex-start; gap: 10px; padding: 7px 0;
  font-size: .87rem; color: var(--ink-soft); cursor: pointer; transition: color .2s;
}
.check-item:hover { color: var(--terracotta); }
.check-item input { margin-top: 5px; accent-color: var(--terracotta); cursor: pointer; }
.check-item.checked span { text-decoration: line-through; opacity: .55; }

/* ============ 页脚 ============ */
.footer {
  background: var(--sea-deep); color: rgba(255,255,255,.85);
  text-align: center; padding: 64px 24px;
}
.footer-quote { font-family: var(--font-display); font-style: italic; font-size: 1.1rem; margin-bottom: 12px; color: var(--gold); }
.footer-line { font-size: .88rem; letter-spacing: .12em; }

/* ============ 响应式 ============ */
@media (max-width: 960px) {
  .facts-grid, .flight-grid, .exp-grid, .check-cols { grid-template-columns: repeat(2, 1fr); }
  .dest-grid { grid-template-columns: 1fr; }
  .budget-wrap { grid-template-columns: 1fr; }
  .visa-wrap { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  .nav-links {
    position: fixed; top: 68px; right: 0; left: 0;
    flex-direction: column; gap: 0;
    background: rgba(253, 249, 243, 0.98); backdrop-filter: blur(12px);
    box-shadow: 0 12px 30px rgba(44,36,32,.15);
    max-height: 0; overflow: hidden; transition: max-height .35s ease;
  }
  .nav-links.open { max-height: 420px; }
  .nav-links a { display: block; padding: 14px 28px; color: var(--ink) !important; }
  .nav-toggle { display: block; }

  .facts-grid, .flight-grid, .exp-grid, .check-cols { grid-template-columns: 1fr; }
  .section { padding: 68px 0; }
  .count-box { min-width: 62px; padding: 10px 12px; }
  .count-num { font-size: 1.5rem; }
  .day-tab { padding: 8px 14px; font-size: .8rem; }
  .day-item, .hotel-banner { padding: 20px; }
}