:root {
  --navy-950: #031126;
  --navy-900: #061a3a;
  --navy-800: #0a2852;
  --blue-600: #146bd7;
  --cyan-400: #28c7f7;
  --sky-100: #e7f7ff;
  --ink: #0a1b33;
  --muted: #52657e;
  --line: #dce7f1;
  --surface: #ffffff;
  --surface-soft: #f4f9fd;
  --amber: #ffad52;
  --shadow: 0 22px 60px rgba(4, 30, 66, 0.12);
  --radius: 22px;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--surface);
  font-family: Inter, "SF Pro Text", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.container { width: min(calc(100% - 40px), var(--max)); margin-inline: auto; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 100; padding: 10px 16px; border-radius: 10px; color: white; background: var(--blue-600); }
.skip-link:focus { top: 16px; }

.site-header {
  position: absolute;
  inset: 0 0 auto;
  z-index: 20;
  color: #fff;
  border-bottom: 1px solid rgba(255,255,255,.14);
  background: linear-gradient(180deg, rgba(2,13,31,.76), rgba(2,13,31,.12));
}
.header-inner { min-height: 78px; display: flex; align-items: center; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 11px; font-weight: 760; letter-spacing: -.025em; font-size: 1.22rem; white-space: nowrap; }
.brand img { width: 34px; height: 34px; }
.brand small { display: block; margin-top: -5px; color: rgba(255,255,255,.64); font-size: .67rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; }
.nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav a { padding: 9px 12px; border-radius: 999px; color: rgba(255,255,255,.76); font-size: .91rem; font-weight: 600; transition: .2s ease; }
.nav a:hover, .nav a:focus-visible, .nav a[aria-current="page"] { color: #fff; background: rgba(255,255,255,.11); }
.lang-switch { display: inline-flex; gap: 4px; align-items: center; padding-left: 12px; margin-left: 8px; border-left: 1px solid rgba(255,255,255,.2); }
.lang-switch a { padding: 7px 9px; }
.lang-switch a[aria-current="true"] { color: var(--navy-950); background: #fff; }
.menu-button { display: none; margin-left: auto; width: 44px; height: 44px; border: 1px solid rgba(255,255,255,.28); border-radius: 12px; color: #fff; background: rgba(255,255,255,.08); cursor: pointer; }
.menu-button span, .menu-button::before, .menu-button::after { display: block; width: 20px; height: 2px; margin: 4px auto; background: currentColor; content: ""; transition: .2s ease; }

.hero {
  position: relative;
  min-height: 760px;
  display: grid;
  align-items: center;
  color: #fff;
  overflow: hidden;
  background: var(--navy-950) url("hero-sky.png") center/cover no-repeat;
}
.hero::before { position: absolute; inset: 0; content: ""; background: linear-gradient(90deg, rgba(2,15,36,.96) 0%, rgba(2,15,36,.8) 42%, rgba(2,15,36,.12) 78%), linear-gradient(0deg, rgba(3,17,38,.45), transparent 50%); }
.hero::after { position: absolute; inset: auto 0 0; height: 150px; content: ""; background: linear-gradient(transparent, rgba(3,17,38,.36)); }
.hero-content { position: relative; z-index: 2; padding: 142px 0 92px; }
.eyebrow { display: inline-flex; align-items: center; gap: 9px; margin: 0 0 22px; color: var(--cyan-400); font-size: .78rem; font-weight: 760; letter-spacing: .16em; text-transform: uppercase; }
.eyebrow::before { width: 30px; height: 1px; content: ""; background: currentColor; }
.hero h1 { max-width: 760px; margin: 0; font-size: clamp(3rem, 7vw, 6.4rem); line-height: .98; letter-spacing: -.055em; }
.hero h1 span { display: block; color: transparent; background: linear-gradient(90deg, #fff, #72dcff); background-clip: text; -webkit-background-clip: text; }
.hero-lead { max-width: 620px; margin: 28px 0 0; color: rgba(255,255,255,.78); font-size: clamp(1.06rem, 2vw, 1.24rem); line-height: 1.75; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }
.button { display: inline-flex; min-height: 50px; align-items: center; justify-content: center; gap: 9px; padding: 12px 21px; border: 1px solid transparent; border-radius: 14px; font-weight: 720; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: var(--navy-950); background: #fff; box-shadow: 0 12px 30px rgba(0,0,0,.2); }
.button-secondary { color: #fff; border-color: rgba(255,255,255,.28); background: rgba(255,255,255,.08); backdrop-filter: blur(12px); }
.button-blue { color: #fff; background: var(--blue-600); box-shadow: 0 12px 26px rgba(20,107,215,.24); }
.button svg { width: 18px; height: 18px; }
.flight-status { position: absolute; z-index: 3; right: max(20px, calc((100vw - var(--max))/2)); bottom: 54px; width: min(370px, calc(100% - 40px)); padding: 22px; border: 1px solid rgba(255,255,255,.22); border-radius: 18px; background: rgba(4,24,52,.7); box-shadow: 0 20px 50px rgba(0,0,0,.25); backdrop-filter: blur(16px); }
.status-head { display: flex; justify-content: space-between; gap: 16px; padding-bottom: 16px; margin-bottom: 16px; border-bottom: 1px solid rgba(255,255,255,.14); }
.status-head small, .route small { display: block; color: rgba(255,255,255,.55); font-size: .68rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
.status-live { display: flex; align-items: center; gap: 7px; color: #8ef1d2; font-size: .78rem; font-weight: 700; }
.status-live::before { width: 7px; height: 7px; border-radius: 50%; content: ""; background: #45e7b6; box-shadow: 0 0 0 5px rgba(69,231,182,.12); }
.route { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 16px; }
.route strong { display: block; margin-top: 3px; font-size: 1.1rem; }
.route-line { position: relative; height: 1px; background: linear-gradient(90deg, var(--cyan-400), rgba(255,255,255,.25)); }
.route-line::after { position: absolute; right: 0; top: -3px; width: 7px; height: 7px; border-radius: 50%; content: ""; background: var(--cyan-400); }

.section { padding: 112px 0; }
.section-soft { background: var(--surface-soft); }
.section-dark { color: #fff; background: var(--navy-950); }
.section-head { display: grid; grid-template-columns: .78fr 1.22fr; gap: 70px; align-items: end; margin-bottom: 52px; }
.section-head h2, .content-title h1 { margin: 0; font-size: clamp(2.2rem, 4vw, 4.1rem); line-height: 1.1; letter-spacing: -.045em; }
.section-head p { max-width: 600px; margin: 0; color: var(--muted); }
.section-dark .section-head p { color: rgba(255,255,255,.64); }
.kicker { margin: 0 0 12px; color: var(--blue-600); font-size: .75rem; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; }
.section-dark .kicker { color: var(--cyan-400); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card { padding: 31px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease; }
.card:hover { transform: translateY(-5px); border-color: #b5d3eb; box-shadow: var(--shadow); }
.card-number { display: inline-flex; width: 42px; height: 42px; align-items: center; justify-content: center; margin-bottom: 34px; border-radius: 12px; color: var(--blue-600); background: var(--sky-100); font-weight: 800; }
.card h3 { margin: 0 0 11px; font-size: 1.26rem; letter-spacing: -.02em; }
.card p { margin: 0; color: var(--muted); }
.band { display: grid; grid-template-columns: 1.1fr .9fr; align-items: center; gap: 70px; padding: 56px; border-radius: 30px; color: #fff; background: linear-gradient(125deg, #08295a, #0a4a86 68%, #0d689b); box-shadow: var(--shadow); }
.band h2 { margin: 0 0 16px; font-size: clamp(2rem, 4vw, 3.4rem); line-height: 1.12; letter-spacing: -.04em; }
.band p { margin: 0; color: rgba(255,255,255,.72); }
.ticket { overflow: hidden; border: 1px solid rgba(255,255,255,.18); border-radius: 18px; background: rgba(255,255,255,.1); }
.ticket-top { display: flex; align-items: center; justify-content: space-between; padding: 13px 18px; border-bottom: 1px dashed rgba(255,255,255,.28); color: rgba(255,255,255,.65); font-size: .73rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
.ticket-main { padding: 22px 18px; }
.ticket-main a { display: inline-block; margin-top: 4px; font-size: clamp(1.08rem, 2.5vw, 1.45rem); font-weight: 760; border-bottom: 1px solid rgba(255,255,255,.35); }
.ticket-main a:hover { border-color: #fff; }

.page-hero { position: relative; overflow: hidden; padding: 178px 0 98px; color: #fff; background: radial-gradient(circle at 82% 24%, rgba(40,199,247,.26), transparent 25%), linear-gradient(135deg, var(--navy-950), #092e60); }
.page-hero::after { position: absolute; inset: auto -10% -80px 35%; height: 180px; content: ""; border: 1px solid rgba(88,207,255,.28); border-radius: 50%; transform: rotate(-7deg); }
.page-hero h1 { max-width: 850px; margin: 0; font-size: clamp(2.8rem, 6vw, 5.3rem); line-height: 1.02; letter-spacing: -.05em; }
.page-hero p { max-width: 680px; margin: 24px 0 0; color: rgba(255,255,255,.7); font-size: 1.1rem; }
.content-grid { display: grid; grid-template-columns: .62fr 1.38fr; gap: 80px; align-items: start; }
.content-title { position: sticky; top: 35px; }
.content-copy h2 { margin: 0 0 12px; font-size: 1.55rem; letter-spacing: -.025em; }
.content-copy p { margin: 0 0 30px; color: var(--muted); }
.feature-list { display: grid; gap: 15px; }
.feature-row { display: grid; grid-template-columns: 52px 1fr; gap: 18px; padding: 25px; border: 1px solid var(--line); border-radius: 18px; background: #fff; }
.feature-icon { display: grid; width: 52px; height: 52px; place-items: center; border-radius: 15px; color: var(--blue-600); background: var(--sky-100); font-weight: 850; }
.feature-row h3 { margin: 0 0 5px; font-size: 1.1rem; }
.feature-row p { margin: 0; color: var(--muted); }
.steps { display: grid; gap: 0; counter-reset: step; }
.step { position: relative; display: grid; grid-template-columns: 58px 1fr; gap: 22px; padding-bottom: 38px; counter-increment: step; }
.step:not(:last-child)::before { position: absolute; left: 28px; top: 58px; bottom: 0; width: 1px; content: ""; background: var(--line); }
.step::after { display: grid; width: 58px; height: 58px; grid-column: 1; grid-row: 1 / span 2; place-items: center; border-radius: 50%; color: var(--blue-600); background: var(--sky-100); font-weight: 800; content: counter(step, decimal-leading-zero); }
.step h3 { margin: 4px 0 7px; }
.step p { margin: 0; color: var(--muted); }
.notice { padding: 22px 24px; border-left: 4px solid var(--cyan-400); border-radius: 0 14px 14px 0; color: #d8efff; background: #0a2a55; }
.notice p { margin: 0; }
.contact-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.contact-card { min-height: 270px; display: flex; flex-direction: column; padding: 34px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: 0 16px 45px rgba(4,30,66,.07); }
.contact-card .tag { align-self: flex-start; padding: 5px 10px; border-radius: 999px; color: var(--blue-600); background: var(--sky-100); font-size: .72rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.contact-card h2 { margin: 25px 0 8px; }
.contact-card p { margin: 0 0 26px; color: var(--muted); }
.email-link { margin-top: auto; color: var(--blue-600); font-size: clamp(1.05rem, 2.4vw, 1.35rem); font-weight: 760; word-break: break-word; }
.email-link:hover { text-decoration: underline; text-underline-offset: 4px; }

.site-footer { padding: 68px 0 28px; color: rgba(255,255,255,.65); background: #020d1f; }
.footer-grid { display: grid; grid-template-columns: 1.1fr .7fr .7fr; gap: 60px; padding-bottom: 55px; }
.footer-brand { color: #fff; }
.footer-copy { max-width: 420px; margin: 18px 0 0; }
.footer-title { margin: 0 0 14px; color: #fff; font-size: .75rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.footer-links { display: grid; gap: 9px; }
.footer-links a:hover { color: #fff; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding-top: 25px; border-top: 1px solid rgba(255,255,255,.1); font-size: .82rem; }
.footer-bottom a { color: #fff; text-decoration: underline; text-decoration-color: rgba(255,255,255,.3); text-underline-offset: 3px; }
.footer-bottom a:hover { text-decoration-color: #fff; }

@media (max-width: 900px) {
  .menu-button { display: block; }
  .nav { position: absolute; top: 72px; left: 20px; right: 20px; display: none; align-items: stretch; flex-direction: column; padding: 16px; border: 1px solid rgba(255,255,255,.16); border-radius: 18px; background: rgba(3,17,38,.97); box-shadow: 0 20px 45px rgba(0,0,0,.28); }
  .nav.is-open { display: flex; }
  .nav a { padding: 11px 13px; }
  .lang-switch { margin: 8px 0 0; padding: 12px 0 0; border-top: 1px solid rgba(255,255,255,.14); border-left: 0; }
  .flight-status { position: relative; right: auto; bottom: auto; margin: -32px auto 42px; }
  .hero { min-height: auto; }
  .hero-content { padding-bottom: 85px; }
  .section-head, .content-grid, .band { grid-template-columns: 1fr; gap: 36px; }
  .grid-3 { grid-template-columns: 1fr; }
  .content-title { position: static; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid > :first-child { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  .container { width: min(calc(100% - 28px), var(--max)); }
  .header-inner { min-height: 70px; }
  .brand small { display: none; }
  .hero { background-position: 64% center; }
  .hero::before { background: linear-gradient(90deg, rgba(2,15,36,.96), rgba(2,15,36,.56)), linear-gradient(0deg, rgba(3,17,38,.55), transparent); }
  .hero-content { padding: 126px 0 76px; }
  .hero h1 { font-size: clamp(3.1rem, 16vw, 4.4rem); }
  .hero-actions { flex-direction: column; }
  .button { width: 100%; }
  .flight-status { width: calc(100% - 28px); }
  .section { padding: 78px 0; }
  .section-head { margin-bottom: 34px; }
  .card, .contact-card { padding: 25px; }
  .band { padding: 30px 24px; border-radius: 22px; }
  .page-hero { padding: 142px 0 75px; }
  .contact-grid { grid-template-columns: 1fr; }
  .feature-row { grid-template-columns: 44px 1fr; padding: 20px; }
  .feature-icon { width: 44px; height: 44px; }
  .footer-grid { grid-template-columns: 1fr; gap: 34px; }
  .footer-grid > :first-child { grid-column: auto; }
  .footer-bottom { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}