/* ============================================================
   ZHUXI TRAVEL — 逐西旅行 · 青海高端定制
   Not a website. A cinematic experience.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,700;0,900;1,400&family=Space+Mono:wght@400;700&family=Inter:wght@300;400&display=swap');

:root {
  --void: #080808;
  --smoke: #f0ede8;
  --smoke-dim: rgba(240,237,232,.6);
  --smoke-faint: rgba(240,237,232,.25);
  --gold: #c4963a;
  --gold-bright: #e8b84b;
  --scene-h: 100vh;
}

/* --- RESET --- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--void); }
body {
  background: var(--void);
  color: var(--smoke);
  font-family: 'Inter', sans-serif;
  font-weight: 300;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* --- NAV --- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 24px 40px;
  display: flex; justify-content: space-between; align-items: center;
  mix-blend-mode: difference;
}
.nav-logo {
  font-family: 'Space Mono', monospace;
  font-size: .75rem; letter-spacing: 4px; text-transform: uppercase;
  color: var(--smoke); text-decoration: none; opacity: .6;
  transition: opacity .3s;
}
.nav-logo:hover { opacity: 1; }
.nav-links { display: flex; gap: 32px; }
.nav-links a {
  font-family: 'Space Mono', monospace;
  font-size: .65rem; letter-spacing: 3px; text-transform: uppercase;
  color: var(--smoke); text-decoration: none; opacity: .4;
  transition: opacity .3s;
}
.nav-links a:hover { opacity: .85; }

/* --- SCENE --- */
.scene {
  position: relative; min-height: var(--scene-h);
  display: flex; align-items: center; overflow: hidden;
}
.scene-bg { position: absolute; inset: 0; z-index: 0; }
.scene-bg img {
  width: 100%; height: 100%; object-fit: cover;
  filter: brightness(.35) saturate(.6);
  transform: scale(1.05); transition: transform 8s ease-out;
}
.scene:hover .scene-bg img { transform: scale(1); }
.scene-veil {
  position: absolute; inset: 0; z-index: 1;
  background: radial-gradient(ellipse at center, transparent 30%, rgba(8,8,8,.85) 100%);
}
.scene-content {
  position: relative; z-index: 2;
  width: 100%; max-width: 1100px; margin: 0 auto; padding: 120px 60px;
}

/* --- OPENING --- */
.opening {
  height: 100vh;
  display: flex; flex-direction: column;
  justify-content: center; align-items: center;
  text-align: center; padding: 40px;
}
.opening-pre {
  font-family: 'Space Mono', monospace;
  font-size: .65rem; letter-spacing: 6px; text-transform: uppercase;
  color: var(--smoke-dim); margin-bottom: 32px;
  opacity: 0; animation: fadeUp 1.2s .3s forwards;
}
.opening h1 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(3rem, 8vw, 7rem);
  font-weight: 900; line-height: .95; letter-spacing: -2px;
  margin-bottom: 24px;
  opacity: 0; animation: fadeUp 1.2s .6s forwards;
}
.opening h1 em {
  font-style: italic; font-weight: 400; display: block;
  font-size: .45em; letter-spacing: 0; margin-top: 8px; color: var(--gold);
}
.opening-sub {
  font-family: 'Space Mono', monospace;
  font-size: .7rem; letter-spacing: 3px;
  color: var(--smoke-faint); max-width: 500px;
  opacity: 0; animation: fadeUp 1.2s .9s forwards;
}
.opening-arrow {
  position: absolute; bottom: 40px;
  opacity: 0; animation: fadeUp 1.2s 1.5s forwards;
}
.opening-arrow svg { width: 28px; height: 28px; stroke: var(--smoke-faint); }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --- Scene layouts --- */
.scene-left { max-width: 600px; }
.scene-tag {
  font-family: 'Space Mono', monospace;
  font-size: .6rem; letter-spacing: 5px; text-transform: uppercase;
  color: var(--gold); margin-bottom: 24px;
}
.scene-left h2, .scene-center h2 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  font-weight: 700; line-height: 1.1; margin-bottom: 20px;
}
.scene-left p, .scene-center p {
  font-size: 1rem; color: var(--smoke-dim);
  max-width: 480px; line-height: 1.8; margin-bottom: 32px;
}
.scene-center { text-align: center; max-width: 800px; margin: 0 auto; }

/* --- Destination strip --- */
.dest-strip {
  display: flex; gap: 2px; overflow-x: auto;
  scroll-snap-type: x mandatory; padding: 0 0 20px;
  -ms-overflow-style: none; scrollbar-width: none;
}
.dest-strip::-webkit-scrollbar { display: none; }
.dest-item {
  flex: 0 0 320px; scroll-snap-align: start;
  position: relative; height: 500px; overflow: hidden;
  transition: flex .4s ease; text-decoration: none; cursor: pointer;
}
.dest-item:hover { flex: 0 0 380px; }
.dest-item img {
  width: 100%; height: 100%; object-fit: cover; filter: brightness(.5);
}
.dest-label {
  position: absolute; bottom: 0; left: 0; right: 0; padding: 32px 24px;
  background: linear-gradient(transparent, rgba(8,8,8,.95));
}
.dest-label h3 {
  font-family: 'Playfair Display', serif;
  font-size: 1.5rem; font-weight: 700; margin-bottom: 4px; color: var(--smoke);
}
.dest-label .en {
  font-family: 'Space Mono', monospace;
  font-size: .6rem; letter-spacing: 2px; color: var(--smoke-dim); text-transform: uppercase;
}

/* --- Tour film strip --- */
.tour-film { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; }
.tour-frame {
  position: relative; aspect-ratio: 4/5; overflow: hidden;
  cursor: pointer; text-decoration: none; display: block;
}
.tour-frame img {
  width: 100%; height: 100%; object-fit: cover;
  filter: brightness(.45); transition: .6s;
}
.tour-frame:hover img { filter: brightness(.65); transform: scale(1.03); }
.tour-frame-overlay {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; justify-content: flex-end;
  padding: 28px 24px;
}
.tour-frame-overlay .days {
  font-family: 'Space Mono', monospace;
  font-size: .6rem; letter-spacing: 2px; color: var(--gold); margin-bottom: 8px;
}
.tour-frame-overlay h3 {
  font-family: 'Playfair Display', serif;
  font-size: 1.2rem; font-weight: 700; line-height: 1.2; margin-bottom: 8px; color: var(--smoke);
}
.tour-frame-overlay .price {
  font-family: 'Space Mono', monospace; font-size: .85rem; color: var(--smoke-dim);
}
.tour-badge {
  position: absolute; top: 16px; left: 16px;
  background: rgba(8,8,8,.7); backdrop-filter: blur(8px);
  padding: 4px 12px;
  font-family: 'Space Mono', monospace;
  font-size: .55rem; letter-spacing: 2px; text-transform: uppercase; color: var(--smoke);
}

/* --- More tours list --- */
.tour-list { max-width: 700px; margin: 0 auto; }
.tour-row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 0; border-bottom: 1px solid rgba(255,255,255,.06);
  transition: .3s; text-decoration: none; color: inherit;
}
.tour-row:hover { padding-left: 12px; border-color: rgba(255,255,255,.15); }
.tour-row .num {
  font-family: 'Space Mono', monospace;
  font-size: .65rem; color: var(--smoke-faint); width: 40px;
}
.tour-row .info { flex: 1; }
.tour-row .info h4 {
  font-family: 'Playfair Display', serif;
  font-size: 1.1rem; font-weight: 400; margin-bottom: 2px;
}
.tour-row .info .meta { font-size: .7rem; color: var(--smoke-dim); }
.tour-row .row-price {
  font-family: 'Space Mono', monospace;
  font-size: .9rem; color: var(--gold); text-align: right;
}

/* --- Quote wall --- */
.quote-wall { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; }
.quote-block { background: rgba(255,255,255,.02); padding: 48px 32px; transition: .3s; }
.quote-block:hover { background: rgba(255,255,255,.04); }
.quote-block .mark {
  font-family: 'Playfair Display', serif;
  font-size: 4rem; line-height: 1; color: var(--gold); margin-bottom: 12px; opacity: .5;
}
.quote-block p {
  font-size: .85rem; color: var(--smoke-dim); line-height: 1.8;
  font-style: italic; margin-bottom: 20px;
}
.quote-block .author {
  font-family: 'Space Mono', monospace;
  font-size: .65rem; letter-spacing: 2px; color: var(--smoke-faint); text-transform: uppercase;
}

/* --- Trust strip --- */
.trust-strip {
  display: flex; justify-content: center; gap: 60px;
  padding: 40px 0; flex-wrap: wrap;
}
.trust-item { text-align: center; }
.trust-item .num {
  font-family: 'Playfair Display', serif;
  font-size: 2.5rem; font-weight: 700; color: var(--smoke); line-height: 1;
}
.trust-item .label {
  font-family: 'Space Mono', monospace;
  font-size: .55rem; letter-spacing: 3px; text-transform: uppercase;
  color: var(--smoke-dim); margin-top: 6px;
}

/* --- FAQ --- */
.faq-section { max-width: 600px; margin: 0 auto; }
.faq-q {
  display: flex; justify-content: space-between; align-items: center;
  padding: 20px 0; border-bottom: 1px solid rgba(255,255,255,.06);
  cursor: pointer; font-family: 'Playfair Display', serif; font-size: 1.05rem;
}
.faq-q .indicator {
  font-family: 'Space Mono', monospace;
  font-size: .8rem; color: var(--smoke-faint); transition: .3s;
}
.faq-item.open .faq-q .indicator { transform: rotate(45deg); color: var(--gold); }
.faq-a {
  max-height: 0; overflow: hidden; transition: .4s;
  font-size: .85rem; color: var(--smoke-dim); line-height: 1.8;
}
.faq-item.open .faq-a { max-height: 200px; padding-bottom: 16px; }

/* --- CTA --- */
.scene-final { text-align: center; padding: 120px 40px; }
.scene-final h2 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2rem, 5vw, 4rem); font-weight: 700; margin-bottom: 16px;
}
.scene-final p {
  font-family: 'Space Mono', monospace;
  font-size: .7rem; letter-spacing: 2px; color: var(--smoke-dim); margin-bottom: 40px;
}
.btn-cinema {
  display: inline-block; padding: 16px 40px;
  border: 1px solid var(--smoke-faint); color: var(--smoke);
  font-family: 'Space Mono', monospace;
  font-size: .7rem; letter-spacing: 3px; text-transform: uppercase;
  text-decoration: none; transition: .3s;
}
.btn-cinema:hover { background: var(--smoke); color: var(--void); }
.btn-cinema.gold { border-color: var(--gold); color: var(--gold); margin-right: 12px; }
.btn-cinema.gold:hover { background: var(--gold); color: var(--void); }

/* --- Footer --- */
.finale {
  padding: 60px 40px; text-align: center;
  border-top: 1px solid rgba(255,255,255,.04);
}
.finale p {
  font-family: 'Space Mono', monospace;
  font-size: .6rem; letter-spacing: 3px; color: var(--smoke-faint); text-transform: uppercase;
}
.finale .contact { display: flex; justify-content: center; gap: 40px; margin-bottom: 24px; }
.finale .contact span { font-size: .7rem; color: var(--smoke-dim); }

/* --- Page Hero --- */
.page-hero { padding: 160px 40px 80px; text-align: center; }
.page-hero h1 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2.5rem, 5vw, 4rem); font-weight: 700; margin-bottom: 12px;
}
.page-hero p {
  font-family: 'Space Mono', monospace;
  font-size: .7rem; letter-spacing: 2px; color: var(--smoke-dim); max-width: 500px; margin: 0 auto;
}

/* --- Tour Detail Page --- */
.tour-hero {
  min-height: 60vh;
  display: flex; flex-direction: column;
  justify-content: center; align-items: center;
  text-align: center; padding: 160px 40px 60px;
  position: relative; overflow: hidden;
}
.tour-hero .tour-bg { position: absolute; inset: 0; z-index: 0; }
.tour-hero .tour-bg img {
  width: 100%; height: 100%; object-fit: cover;
  filter: brightness(.3) saturate(.5);
}
.tour-hero .tour-veil {
  position: absolute; inset: 0; z-index: 1;
  background: radial-gradient(ellipse at center, transparent 20%, rgba(8,8,8,.9) 100%);
}
.tour-hero .tour-content { position: relative; z-index: 2; }
.tour-hero h1 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2rem, 4.5vw, 3.5rem); font-weight: 700; margin-bottom: 12px; color: var(--smoke);
}
.tour-hero .meta {
  font-family: 'Space Mono', monospace;
  font-size: .7rem; letter-spacing: 2px; color: var(--smoke-dim); margin-bottom: 20px;
}
.tour-hero .t-price { font-family: 'Space Mono', monospace; font-size: 1.1rem; color: var(--gold); }
.tour-hero .t-price span { font-size: .7rem; color: var(--smoke-dim); }

/* --- Tour Detail Content --- */
.tour-detail { padding: 40px 40px 80px; max-width: 1100px; margin: 0 auto; }
.tour-detail h2 {
  font-family: 'Playfair Display', serif;
  font-size: 2rem; font-weight: 700; margin-bottom: 32px; color: var(--smoke);
}
.tour-detail h3 {
  font-family: 'Playfair Display', serif;
  font-size: 1.5rem; font-weight: 700; margin: 48px 0 24px; color: var(--smoke);
}
.highlights { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 32px; }
.hl-item { background: rgba(255,255,255,.02); padding: 24px; border-left: 2px solid var(--gold); }
.hl-item h4 { font-family: 'Playfair Display', serif; font-size: 1rem; margin-bottom: 6px; color: var(--smoke); }
.hl-item p { font-size: .8rem; color: var(--smoke-dim); line-height: 1.6; }

.itinerary-day {
  display: flex; gap: 20px; padding: 20px 0;
  border-bottom: 1px solid rgba(255,255,255,.04);
}
.itinerary-day .d-num {
  font-family: 'Playfair Display', serif;
  font-size: 2rem; color: var(--gold); line-height: 1; flex-shrink: 0; width: 50px;
}
.itinerary-day .d-info h5 {
  font-family: 'Playfair Display', serif; font-size: 1rem; margin-bottom: 4px; color: var(--smoke);
}
.itinerary-day .d-info p { font-size: .8rem; color: var(--smoke-dim); line-height: 1.7; }

.include-block { padding: 32px; background: rgba(255,255,255,.02); margin-bottom: 24px; }
.include-block h4 {
  font-family: 'Space Mono', monospace;
  font-size: .65rem; letter-spacing: 2px; text-transform: uppercase; margin-bottom: 12px;
}
.include-block.green h4 { color: #6b9e6b; }
.include-block.red h4 { color: rgba(255,255,255,.3); }
.include-block ul { list-style: none; font-size: .8rem; color: var(--smoke-dim); line-height: 2; }
.include-block.red ul { color: rgba(240,237,232,.3); }

.note {
  font-family: 'Space Mono', monospace;
  font-size: .65rem; letter-spacing: 1px; color: var(--smoke-dim);
  text-align: center; margin: 32px 0; font-style: italic;
}

/* --- About Page --- */
.about-section { padding: 160px 40px 80px; max-width: 800px; margin: 0 auto; text-align: center; }
.about-section h1 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2.5rem, 5vw, 4rem); font-weight: 700; margin-bottom: 40px;
}
.about-section h2 {
  font-family: 'Playfair Display', serif;
  font-size: 2rem; font-weight: 700; margin: 48px 0 24px; color: var(--gold);
}
.about-section p { font-size: 1rem; color: var(--smoke-dim); line-height: 2; margin-bottom: 24px; text-align: left; }

/* --- Contact Page --- */
.contact-hero { padding: 160px 40px 60px; text-align: center; }
.contact-hero h1 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2.5rem, 5vw, 4rem); font-weight: 700; margin-bottom: 12px;
}
.contact-hero p {
  font-family: 'Space Mono', monospace;
  font-size: .7rem; letter-spacing: 2px; color: var(--smoke-dim); max-width: 500px; margin: 0 auto;
}
.contact-block { max-width: 700px; margin: 0 auto 80px; padding: 0 40px; }
.contact-card { background: rgba(255,255,255,.02); padding: 48px; margin-top: 40px; }
.contact-card h3 {
  font-family: 'Playfair Display', serif;
  font-size: 1.6rem; font-weight: 700; margin-bottom: 24px; color: var(--smoke);
}
.contact-card .c-row {
  display: flex; align-items: flex-start; gap: 20px; padding: 20px 0;
  border-bottom: 1px solid rgba(255,255,255,.04);
}
.contact-card .c-row:last-child { border-bottom: none; }
.contact-card .c-icon {
  font-size: 1.2rem; color: var(--gold); width: 36px; text-align: center; flex-shrink: 0; padding-top: 2px;
}
.contact-card .c-body { flex: 1; }
.contact-card .c-label {
  font-family: 'Space Mono', monospace;
  font-size: .55rem; letter-spacing: 2px; text-transform: uppercase;
  color: var(--smoke-faint); margin-bottom: 4px;
}
.contact-card .c-val { font-size: .95rem; color: var(--smoke); }
.contact-card .c-val.gold { color: var(--gold); }
.contact-instructions { margin-top: 48px; padding: 32px; background: rgba(255,255,255,.02); }
.contact-instructions h4 {
  font-family: 'Playfair Display', serif;
  font-size: 1.2rem; margin-bottom: 16px; color: var(--smoke);
}
.contact-instructions ul { list-style: none; }
.contact-instructions ul li {
  font-family: 'Space Mono', monospace;
  font-size: .65rem; letter-spacing: 1px; color: var(--smoke-dim);
  padding: 6px 0; position: relative; padding-left: 20px;
}
.contact-instructions ul li::before { content: '+'; position: absolute; left: 0; color: var(--gold); }

/* --- Skip Link --- */
.skip-link {
  position: absolute; top: -100px; left: 16px; background: var(--gold); color: #000;
  padding: 8px 16px; z-index: 9999; font-size: .7rem; text-decoration: none; border-radius: 4px;
}
.skip-link:focus { top: 16px; }

/* --- RESPONSIVE --- */
@media (max-width: 768px) {
  .nav { padding: 16px 20px; }
  .nav-links { display: none; }
  .scene-content { padding: 80px 24px; }
  .tour-film { grid-template-columns: 1fr; }
  .quote-wall { grid-template-columns: 1fr; }
  .trust-strip { gap: 24px; }
  .dest-item { flex: 0 0 260px; }
  .scene-left h2 { font-size: 2rem; }
  .opening h1 { font-size: clamp(2rem, 10vw, 4rem); }
  .highlights { grid-template-columns: 1fr; }
  .tour-hero h1 { font-size: 1.8rem; }
  .itinerary-day { flex-direction: column; gap: 8px; }
  .itinerary-day .d-num { width: auto; }
  .page-hero { padding: 120px 24px 60px; }
  .about-section { padding: 120px 24px 60px; }
  .contact-hero { padding: 120px 24px 40px; }
  .contact-block { padding: 0 24px; }
  .contact-card { padding: 32px 24px; }
  .tour-detail { padding: 40px 24px; }
}