/* ==========================================================
   BookingMeta  |  Beijing Qiliu Tourism Technology Co., Ltd.
   Direction: dark editorial, oversized type, acid-lime accent
   ========================================================== */

:root {
  --black: #0A0A0B;
  --ink: #111113;
  --graphite: #1A1A1D;
  --paper: #F2F0EA;
  --lime: #D7FF3D;
  --white: #FFFFFF;
  --mute: #9A9AA2;
  --mute-d: #5E5E66;
  --line: rgba(255, 255, 255, .14);
  --line-d: rgba(10, 10, 11, .18);

  --f-display: 'Unbounded', 'Arial Black', system-ui, sans-serif;
  --f-body: 'Space Grotesk', -apple-system, 'Segoe UI', Roboto, sans-serif;
  --f-mono: ui-monospace, 'SFMono-Regular', Menlo, Consolas, 'Courier New', monospace;
  --ease: cubic-bezier(.2, .8, .2, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  margin: 0; background: var(--black); color: var(--white);
  font-family: var(--f-body); font-size: 17px; line-height: 1.6;
  -webkit-font-smoothing: antialiased; overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p, dl, dd, figure { margin: 0; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 2px solid var(--lime); outline-offset: 3px; }
.paper :focus-visible, .lime :focus-visible { outline-color: var(--black); }
::selection { background: var(--lime); color: var(--black); }

.container { width: min(1280px, 100% - 56px); margin-inline: auto; }
.mono { font-family: var(--f-mono); font-size: .74rem; letter-spacing: .1em; text-transform: uppercase; font-weight: 500; }

.skip-link { position: absolute; left: 12px; top: -60px; z-index: 300; background: var(--lime); color: var(--black); padding: 10px 16px; font-weight: 600; }
.skip-link:focus { top: 12px; }

.progress { position: fixed; top: 0; left: 0; height: 3px; width: 100%; background: var(--lime); transform: scaleX(0); transform-origin: left; z-index: 250; }

/* ---------- Header ---------- */
.bar { position: fixed; inset: 0 0 auto 0; z-index: 200; transition: background .3s, backdrop-filter .3s, border-color .3s; border-bottom: 1px solid transparent; }
.bar.is-scrolled { background: rgba(10, 10, 11, .72); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-color: var(--line); }
.bar-in { width: min(1280px, 100% - 56px); margin-inline: auto; height: 72px; display: flex; align-items: center; gap: 36px; }
.brand { display: inline-flex; align-items: center; gap: 10px; }
.brand img { border-radius: 8px; }
.brand-word { font-family: var(--f-display); font-weight: 600; font-size: 1rem; letter-spacing: -.02em; }
.bar-nav { display: flex; gap: 30px; margin-left: auto; }
.bar-nav a { font-size: .88rem; position: relative; padding: 4px 0; color: #D6D6DA; transition: color .2s; }
.bar-nav a::after { content: ''; position: absolute; left: 0; right: 0; bottom: 0; height: 1px; background: var(--lime); transform: scaleX(0); transform-origin: left; transition: transform .3s var(--ease); }
.bar-nav a:hover { color: #fff; }
.bar-nav a:hover::after { transform: scaleX(1); }
.chip { display: inline-flex; align-items: center; gap: 8px; padding: 10px 18px; border-radius: 999px; background: var(--lime); color: var(--black); font-weight: 600; font-size: .86rem; transition: transform .25s var(--ease), box-shadow .25s; }
.chip:hover { transform: translateY(-2px); box-shadow: 0 10px 30px -10px rgba(215, 255, 61, .7); }

.burger { display: none; margin-left: auto; width: 46px; height: 46px; border-radius: 50%; border: 1px solid var(--line); background: transparent; position: relative; }
.burger span { position: absolute; left: 14px; right: 14px; height: 2px; background: #fff; transition: transform .3s var(--ease), top .3s var(--ease); }
.burger span:first-child { top: 18px; } .burger span:last-child { top: 26px; }
.burger[aria-expanded="true"] span:first-child { top: 22px; transform: rotate(45deg); }
.burger[aria-expanded="true"] span:last-child { top: 22px; transform: rotate(-45deg); }

.drawer { position: fixed; inset: 0; z-index: 150; background: var(--black); display: flex; flex-direction: column; justify-content: center; padding: 90px 28px 40px; clip-path: inset(0 0 100% 0); visibility: hidden; transition: clip-path .6s var(--ease), visibility 0s .6s; }
.drawer.is-open { clip-path: inset(0); visibility: visible; transition: clip-path .6s var(--ease); }
.drawer a { font-family: var(--f-display); font-size: clamp(1.8rem, 8vw, 2.6rem); font-weight: 600; letter-spacing: -.03em; padding: 10px 0; border-bottom: 1px solid var(--line); display: flex; align-items: baseline; gap: 16px; }
.drawer a i { font-style: normal; font-family: var(--f-mono); font-size: .7rem; color: var(--lime); letter-spacing: .1em; }
.drawer a:hover { color: var(--lime); }

/* ---------- Hero ---------- */
.hero { position: relative; min-height: 100svh; display: flex; align-items: flex-end; overflow: hidden; padding: 110px 0 44px; isolation: isolate; }
.hero-bg { position: absolute; inset: -6% 0 -6% 0; width: 100%; height: 112%; object-fit: cover; object-position: center 40%; z-index: -2; will-change: transform; }
.hero-shade { position: absolute; inset: 0; z-index: -1; background:
  linear-gradient(to top, rgba(10, 10, 11, .92) 0%, rgba(10, 10, 11, .45) 42%, rgba(10, 10, 11, .1) 100%),
  linear-gradient(to bottom, rgba(10, 10, 11, .55), transparent 28%); }
.hero-in { width: min(1280px, 100% - 56px); }
.hero-meta { display: flex; justify-content: space-between; gap: 16px; color: #E8E8EC; padding-bottom: 14px; border-bottom: 1px solid var(--line); margin-bottom: 4vh; }
.hero-meta b { color: var(--lime); font-weight: 500; }

.hero-title { font-family: var(--f-display); font-weight: 800; font-size: clamp(3.4rem, 15.5vw, 15rem); line-height: .9; letter-spacing: -.055em; text-transform: lowercase; margin-bottom: 5vh; }
.hero-title .line { display: block; overflow: hidden; padding-bottom: .08em; }
.hero-title .line > span { display: inline-block; transform: translateY(105%); animation: rise 1.2s var(--ease) forwards; }
.hero-title .line:nth-child(2) > span { animation-delay: .15s; }
.outline { color: transparent; -webkit-text-stroke: 2px var(--lime); }
@keyframes rise { to { transform: none; } }

.hero-foot { display: grid; grid-template-columns: 1fr minmax(380px, 560px); gap: 48px; align-items: end; }
.hero-lead p { max-width: 460px; color: #E0E0E5; font-size: 1.08rem; }
.scroll-cue { display: inline-block; margin-top: 22px; color: var(--lime); }
.scroll-cue span { display: inline-block; animation: bob 1.6s ease-in-out infinite; }
@keyframes bob { 50% { transform: translateY(5px); } }

.planner { background: rgba(10, 10, 11, .62); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px); border: 1px solid var(--line); border-radius: 22px; padding: 12px; }
.planner-tabs { display: flex; gap: 4px; padding: 2px 2px 12px; }
.planner-tabs button { border: 0; background: transparent; color: var(--mute); padding: 7px 14px; border-radius: 999px; font-size: .84rem; font-weight: 500; transition: all .2s; }
.planner-tabs button:hover { color: #fff; }
.planner-tabs button.is-active { background: #fff; color: var(--black); }
.planner-row { display: grid; grid-template-columns: 1.2fr 1fr 1fr auto; gap: 8px; }
.pf { display: flex; flex-direction: column; gap: 2px; padding: 10px 14px; background: rgba(255, 255, 255, .07); border: 1px solid transparent; border-radius: 14px; transition: border-color .2s, background .2s; min-width: 0; }
.pf:focus-within { border-color: var(--lime); background: rgba(255, 255, 255, .12); }
.pf span { color: var(--mute); font-size: .64rem; }
.pf input { background: transparent; border: 0; padding: 0; font-size: .95rem; width: 100%; min-width: 0; }
.pf input:focus { outline: none; }
.pf input::placeholder { color: #70707A; }
.go { display: inline-flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; min-width: 76px; border: 0; border-radius: 14px; background: var(--lime); color: var(--black); font-weight: 600; font-size: .82rem; transition: transform .25s var(--ease); }
.go i { font-style: normal; font-size: 1.3rem; line-height: 1; }
.go:hover { transform: scale(1.04) rotate(-2deg); }

/* ---------- Ticker ---------- */
.ticker { background: var(--lime); color: var(--black); overflow: hidden; padding: 16px 0; border-block: 1px solid var(--black); }
.ticker-track { display: flex; align-items: center; gap: 36px; width: max-content; animation: slide 30s linear infinite; font-family: var(--f-display); font-weight: 600; font-size: clamp(1.3rem, 2.4vw, 2rem); letter-spacing: -.03em; text-transform: uppercase; white-space: nowrap; }
.ticker-track i { font-style: normal; font-size: 1.1rem; }
.ticker:hover .ticker-track { animation-play-state: paused; }
@keyframes slide { to { transform: translateX(-50%); } }

/* ---------- Manifesto ---------- */
.manifesto { padding: clamp(80px, 14vw, 180px) 0; background: var(--black); }
.label { color: var(--lime); margin-bottom: 28px; }
.paper .label, .lime .label { color: var(--black); opacity: .7; }
.statement { font-family: var(--f-display); font-weight: 600; font-size: clamp(1.7rem, 4.4vw, 4rem); line-height: 1.12; letter-spacing: -.04em; max-width: 1100px; }
.statement em { font-style: normal; color: var(--lime); }

/* ---------- Generic section ---------- */
.section { padding: clamp(80px, 11vw, 150px) 0; position: relative; }
.section.paper { background: var(--paper); color: var(--black); }
.section.dark { background: var(--black); }
.section.lime { background: var(--lime); color: var(--black); }
.head { margin-bottom: clamp(40px, 6vw, 80px); }
.head h2 { font-family: var(--f-display); font-weight: 800; font-size: clamp(2.6rem, 8vw, 7.4rem); line-height: .94; letter-spacing: -.055em; text-transform: lowercase; }
.head.split { display: flex; justify-content: space-between; align-items: flex-end; gap: 32px; }
.head-note { max-width: 300px; color: var(--mute); }

/* ---------- Platform rows ---------- */
.rows { border-bottom: 1px solid var(--line-d); }
.row { display: grid; grid-template-columns: 70px 1.1fr 1.6fr auto; gap: 28px; align-items: baseline; padding: 30px 0; border-top: 1px solid var(--line-d); transition: background .35s var(--ease), padding .35s var(--ease); }
.row:hover { background: var(--black); color: var(--paper); padding-inline: 22px; }
.row-n { color: var(--mute-d); }
.row:hover .row-n { color: var(--lime); }
.row h3 { font-family: var(--f-display); font-weight: 600; font-size: clamp(1.2rem, 2.2vw, 1.9rem); letter-spacing: -.04em; line-height: 1.1; }
.row p { color: var(--mute-d); max-width: 520px; }
.row:hover p { color: #BEBEC6; }
.row-tag { padding: 5px 12px; border: 1px solid currentColor; border-radius: 999px; white-space: nowrap; }

/* ---------- Collage ---------- */
.collage { display: grid; grid-template-columns: repeat(12, 1fr); grid-auto-rows: 92px; gap: 16px; }
.shot { position: relative; overflow: hidden; border-radius: 6px; background: var(--graphite); display: block; }
.shot img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform 1.1s var(--ease), filter .6s; filter: saturate(.92) contrast(1.04); }
.shot:hover img { transform: scale(1.06); filter: saturate(1.1) contrast(1.06); }
.shot::after { content: ''; position: absolute; inset: 0; background: linear-gradient(to top, rgba(10, 10, 11, .78), transparent 52%); pointer-events: none; }
.cap { position: absolute; left: 20px; right: 20px; bottom: 16px; z-index: 2; display: flex; flex-direction: column; gap: 2px; }
.cap .mono { color: var(--lime); }
.cap h3 { font-family: var(--f-display); font-weight: 600; font-size: clamp(1.3rem, 2.6vw, 2.3rem); letter-spacing: -.05em; line-height: 1.05; }
.shot::before { content: '\2197'; position: absolute; top: 14px; right: 14px; z-index: 2; width: 44px; height: 44px; border-radius: 50%; display: grid; place-items: center; background: var(--lime); color: var(--black); font-size: 1.2rem; opacity: 0; transform: scale(.6) rotate(-45deg); transition: all .35s var(--ease); }
.shot:hover::before, .shot:focus-visible::before { opacity: 1; transform: none; }

.s1 { grid-column: 1 / 8;  grid-row: 1 / 6; }
.s2 { grid-column: 8 / 13; grid-row: 1 / 4; }
.s3 { grid-column: 8 / 13; grid-row: 4 / 6; }
.s4 { grid-column: 1 / 6;  grid-row: 6 / 11; }
.s5 { grid-column: 6 / 13; grid-row: 6 / 9; }
.s6 { grid-column: 6 / 13; grid-row: 9 / 11; }

/* ---------- Process ---------- */
.process { border-top: 1px solid var(--line); }
.steps { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); }
.step { padding: 32px 26px 40px 0; border-right: 1px solid var(--line); padding-left: 26px; transition: background .35s; }
.step:first-child { padding-left: 0; }
.step:last-child { border-right: 0; }
.step-n { display: block; font-family: var(--f-display); font-weight: 800; font-size: clamp(3.4rem, 7vw, 6.5rem); letter-spacing: -.06em; line-height: 1; color: transparent; -webkit-text-stroke: 1.5px var(--lime); margin-bottom: 28px; transition: color .35s; }
.step:hover .step-n { color: var(--lime); }
.step h3 { font-family: var(--f-display); font-weight: 600; font-size: 1.4rem; letter-spacing: -.04em; margin-bottom: 10px; }
.step p { color: var(--mute); font-size: .98rem; }

/* ---------- Accordion ---------- */
.acc { border-top: 2px solid var(--black); }
.acc-item { border-bottom: 2px solid var(--black); }
.acc-btn { width: 100%; display: grid; grid-template-columns: 70px 1fr 44px; align-items: center; gap: 20px; text-align: left; background: transparent; border: 0; padding: 30px 0; color: var(--black); }
.acc-t { font-family: var(--f-display); font-weight: 800; font-size: clamp(1.6rem, 4.4vw, 3.8rem); letter-spacing: -.055em; line-height: 1; text-transform: lowercase; }
.acc-i { position: relative; width: 44px; height: 44px; border-radius: 50%; background: var(--black); transition: transform .4s var(--ease); }
.acc-i::before, .acc-i::after { content: ''; position: absolute; left: 13px; right: 13px; top: 21px; height: 2px; background: var(--lime); transition: transform .4s var(--ease); }
.acc-i::after { transform: rotate(90deg); }
.acc-btn[aria-expanded="true"] .acc-i::after { transform: rotate(0); }
.acc-btn:hover .acc-t { text-decoration: underline; text-decoration-thickness: 3px; text-underline-offset: 8px; }
.acc-panel { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .5s var(--ease); }
.acc-item.is-open .acc-panel { grid-template-rows: 1fr; }
.acc-inner { overflow: hidden; display: grid; grid-template-columns: 1.2fr 1fr; gap: 48px; padding-left: 90px; }
.acc-item.is-open .acc-inner { padding-bottom: 36px; }
.acc-inner p { font-size: 1.12rem; max-width: 520px; }
.ticks { display: grid; gap: 10px; align-content: start; }
.ticks li { position: relative; padding-left: 28px; font-weight: 500; }
.ticks li::before { content: ''; position: absolute; left: 0; top: .55em; width: 14px; height: 2px; background: var(--black); }

/* ---------- About ---------- */
.about { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 6vw, 90px); align-items: center; }
.about-photo { position: relative; border-radius: 6px; overflow: hidden; aspect-ratio: 4 / 5; }
.about-photo img { width: 100%; height: 100%; object-fit: cover; filter: saturate(.9) contrast(1.05); }
.about-photo figcaption { position: absolute; left: 16px; bottom: 14px; padding: 6px 12px; background: var(--black); color: var(--lime); border-radius: 999px; }
.about-copy h2 { font-family: var(--f-display); font-weight: 800; font-size: clamp(2rem, 4.6vw, 4.2rem); line-height: .98; letter-spacing: -.055em; margin-bottom: 28px; text-transform: lowercase; }
.about-copy > p:not(.label) { color: #C4C4CC; margin-bottom: 14px; max-width: 520px; }
.about-copy strong { color: #fff; font-weight: 600; }
.facts { display: grid; grid-template-columns: 1fr 1fr; margin-top: 30px; border-top: 1px solid var(--line); }
.facts div { padding: 14px 12px 14px 0; border-bottom: 1px solid var(--line); }
.facts dt { color: var(--lime); margin-bottom: 2px; }
.facts dd { font-weight: 500; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 6vw, 90px); align-items: start; }
.contact-copy h2 { font-family: var(--f-display); font-weight: 800; font-size: clamp(2.6rem, 6.4vw, 6rem); line-height: .94; letter-spacing: -.055em; margin-bottom: 28px; text-transform: lowercase; }
.contact-copy > p:not(.label):not(.loc) { max-width: 440px; color: var(--mute-d); margin-bottom: 30px; }
.big-mail { display: inline-block; font-family: var(--f-display); font-weight: 600; font-size: clamp(1.05rem, 2vw, 1.6rem); letter-spacing: -.04em; border-bottom: 3px solid var(--black); padding-bottom: 4px; transition: background .25s, padding .25s; word-break: break-all; }
.big-mail:hover { background: var(--lime); padding-inline: 8px; }
.loc { margin-top: 22px; color: var(--mute-d); }

.cform { display: grid; gap: 20px; }
.cform .two { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.cf { display: grid; gap: 4px; }
.cf span { color: var(--mute-d); }
.cf input, .cf select, .cf textarea { background: transparent; border: 0; border-bottom: 2px solid var(--black); border-radius: 0; padding: 10px 0; width: 100%; resize: vertical; transition: background .2s, padding .2s; color: var(--black); }
.cf select { cursor: pointer; }
.cf input:focus, .cf select:focus, .cf textarea:focus { outline: none; background: var(--lime); padding-inline: 10px; }
.cf .invalid { border-bottom-color: #E5391A; background: rgba(229, 57, 26, .08); }
.send { display: inline-flex; align-items: center; justify-content: space-between; gap: 12px; padding: 20px 28px; border: 0; border-radius: 999px; background: var(--black); color: var(--lime); font-family: var(--f-display); font-weight: 600; font-size: 1rem; letter-spacing: -.03em; transition: transform .3s var(--ease), background .3s, color .3s; }
.send:hover { background: var(--lime); color: var(--black); outline: 2px solid var(--black); transform: translateY(-3px); }
.form-note { min-height: 1.4em; font-size: .9rem; font-weight: 500; }
.form-note.error { color: #C22E12; }

/* ---------- Footer ---------- */
.footer { background: var(--black); padding: 80px 0 32px; overflow: hidden; }
.footer-top { display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 8px 28px; }
.footer-nav a { font-size: 1rem; color: #D6D6DA; transition: color .2s; }
.footer-nav a:hover { color: var(--lime); }
.footer-co { color: var(--mute); text-align: right; }
.giant { font-family: var(--f-display); font-weight: 800; font-size: 16.2vw; line-height: .85; letter-spacing: -.07em; text-transform: lowercase; color: transparent; -webkit-text-stroke: 1.5px #2C2C31; margin: 70px 0 24px -.04em; white-space: nowrap; user-select: none; transition: -webkit-text-stroke-color .5s; }
.footer:hover .giant { -webkit-text-stroke-color: var(--lime); }
.footer-bottom { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; color: var(--mute); padding-top: 20px; border-top: 1px solid var(--line); }
.credits { margin-top: 22px; color: var(--mute); font-size: .84rem; }
.credits summary { cursor: pointer; width: max-content; padding: 4px 0; }
.credits summary:hover { color: var(--lime); }
.credits ul { margin-top: 12px; display: grid; gap: 6px; }
.credits a { color: #C9C9D0; text-decoration: underline; text-underline-offset: 3px; }
.credits a:hover { color: var(--lime); }
.credits p { margin-top: 10px; }

/* ---------- Reveal ---------- */
.reveal { opacity: 0; transform: translateY(34px); transition: opacity .9s var(--ease), transform .9s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .12s; } .reveal.d2 { transition-delay: .24s; } .reveal.d3 { transition-delay: .36s; }

/* ---------- Responsive ---------- */
@media (max-width: 1040px) {
  .hero-foot { grid-template-columns: 1fr; gap: 28px; }
  .row { grid-template-columns: 50px 1fr auto; }
  .row p { grid-column: 2 / 4; grid-row: 2; }
  .steps { grid-template-columns: 1fr 1fr; }
  .step { padding-left: 26px; border-bottom: 1px solid var(--line); }
  .step:nth-child(odd) { padding-left: 0; }
  .step:nth-child(2) { border-right: 0; }
  .about, .contact-grid { grid-template-columns: 1fr; }
  .about-photo { aspect-ratio: 16 / 11; }
}
@media (max-width: 860px) {
  .bar-nav, .bar-cta { display: none; }
  .burger { display: block; }
  .collage { grid-template-columns: 1fr; grid-auto-rows: auto; gap: 14px; }
  .shot { aspect-ratio: 4 / 3; }
  .s1, .s2, .s3, .s4, .s5, .s6 { grid-column: 1; grid-row: auto; }
  .head.split { flex-direction: column; align-items: flex-start; }
  .acc-inner { grid-template-columns: 1fr; gap: 20px; padding-left: 0; }
  .acc-btn { grid-template-columns: 34px 1fr 44px; gap: 12px; }
}
@media (max-width: 600px) {
  .container, .bar-in, .hero-in { width: calc(100% - 36px); }
  body { font-size: 16px; }
  .hero { padding-bottom: 28px; }
  .hero-meta span:first-child { display: none; }
  .planner-row { grid-template-columns: 1fr 1fr; }
  .planner-row .pf:first-child { grid-column: span 2; }
  .go { grid-column: span 2; flex-direction: row; gap: 8px; padding: 14px; }
  .row { grid-template-columns: 1fr auto; gap: 8px 16px; }
  .row-n { display: none; }
  .row p { grid-column: 1 / 3; grid-row: 2; }
  .steps { grid-template-columns: 1fr; }
  .step, .step:nth-child(odd) { padding-left: 0; border-right: 0; }
  .facts, .cform .two { grid-template-columns: 1fr; }
  .footer-co { text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
  .hero-title .line > span { transform: none; }
}