:root{--bg:#f3f7fd;--panel:#fff;--ink:#102544;--muted:#6e7f98;--line:#dce6f3;--blue:#1768e5;--blue2:#2f63d8;--blue-soft:#edf4ff;--green:#18a75b;--green-soft:#e9f8ef;--orange:#c7842b;--orange-soft:#fff4df;--shadow:0 20px 55px rgba(35,75,132,.10);--radius:24px;font-family:Inter,"PingFang SC","Microsoft YaHei",Arial,sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:linear-gradient(180deg,#f7faff 0,#f1f6fc 45%,#f5f8fc 100%);color:var(--ink);min-height:100vh}button,input,select{font:inherit}button{cursor:pointer}a{color:inherit;text-decoration:none}.hidden{display:none!important}.site-header{height:72px;padding:0 max(24px,calc((100vw - 1440px)/2));display:flex;align-items:center;gap:30px;background:rgba(255,255,255,.86);backdrop-filter:blur(14px);border-bottom:1px solid rgba(213,225,241,.9);position:sticky;top:0;z-index:30}.site-brand{display:flex;align-items:center;gap:10px;min-width:188px}.brand-mark{width:35px;height:35px;display:grid;place-items:center;border-radius:11px;background:linear-gradient(135deg,#1768e5,#59a2ff);color:#fff;box-shadow:0 8px 18px rgba(23,104,229,.25)}.site-brand strong{display:block;font-size:17px}.site-brand small{display:block;font-size:10px;color:#8493a9;margin-top:1px}.main-nav{display:flex;align-items:center;gap:8px;flex:1}.main-nav a,.main-nav span{padding:10px 14px;border-radius:12px;font-size:13px;color:#72829a;white-space:nowrap}.main-nav .active{background:var(--blue);color:#fff;box-shadow:0 7px 18px rgba(23,104,229,.22)}.header-actions{display:flex;align-items:center;gap:10px}.currency-chip,.version-chip{font-size:12px;padding:8px 12px;border-radius:999px;background:#f1f5fb;color:#52647e}.version-chip{color:var(--green);font-weight:800;background:#eef9f3}.home-main{max-width:1320px;margin:0 auto;padding:70px 24px 86px}.home-hero{display:grid;grid-template-columns:minmax(0,1fr) 540px;gap:72px;align-items:center;min-height:690px}.hero-copy{padding:20px 0 50px}.eyebrow{font-size:12px;font-weight:800;color:var(--blue);letter-spacing:.02em}.hero-copy h1{font-size:62px;line-height:1.06;letter-spacing:-.055em;margin:17px 0 24px;max-width:660px}.hero-copy p{font-size:17px;line-height:1.9;color:#6f819b;max-width:630px}.hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}.hero-points span{font-size:12px;padding:9px 13px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#62758f;box-shadow:0 6px 18px rgba(34,74,127,.05)}.search-card{background:rgba(255,255,255,.96);border:1px solid #e1eaf5;border-radius:28px;padding:20px;box-shadow:var(--shadow)}.segmented{display:grid;grid-template-columns:1fr 1fr;gap:4px;background:#eaf1fc;border-radius:14px;padding:4px;margin-bottom:10px}.segmented 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0}}@media(max-width:1080px){.main-nav{display:none}.home-hero{grid-template-columns:1fr;gap:30px;min-height:auto}.hero-copy{text-align:center;padding-bottom:0}.hero-copy h1,.hero-copy p{margin-left:auto;margin-right:auto}.search-card{max-width:600px;width:100%;margin:0 auto}.comparison-grid{grid-template-columns:1fr}.calendar-panel{position:static}.calendar-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}.flight-summary{grid-template-columns:minmax(250px,1fr) 180px 150px 24px}.summary-logo{max-width:160px}}@media(max-width:760px){.site-header{height:62px;padding:0 14px;gap:10px}.site-brand{min-width:0}.site-brand small{display:none}.currency-chip{display:none}.version-chip{padding:6px 9px}.home-main{padding:32px 16px 58px}.home-hero{gap:24px}.hero-copy{text-align:left}.hero-copy h1{font-size:43px;letter-spacing:-.045em;margin-top:12px}.hero-copy p{font-size:14px;line-height:1.75}.search-card{padding:14px;border-radius:22px}.city-grid{grid-template-columns:1fr}.date-grid{grid-template-columns:1fr 18px 1fr}.results-main{padding:30px 12px 60px}.results-intro{align-items:flex-start;flex-direction:column}.results-intro h1{font-size:28px}.results-tools{width:100%;justify-content:space-between}.sort-control select{max-width:190px}.comparison-grid{gap:12px}.panel{border-radius:20px}.calendar-panel,.flight-panel{padding:12px}.calendar-list{display:flex;flex-direction:row;overflow-x:auto;padding-bottom:4px}.calendar-row{min-width:250px}.flight-summary{grid-template-columns:minmax(0,1fr) 100px 18px;gap:8px;padding:13px}.summary-airline{display:none}.route-line{gap:6px}.route-line h3{font-size:15px}.summary-price strong{font-size:18px}.summary-price small{font-size:8px;max-width:100px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.timeline{grid-template-columns:1fr 100px 1fr;gap:8px}.timeline>div>strong{font-size:24px}.detail-logo{max-width:190px}.airline-detail-head{align-items:flex-start}.site-footer{padding:18px 14px;flex-direction:column;gap:6px}}@media(max-width:460px){.hero-copy h1{font-size:38px}.date-grid{grid-template-columns:1fr}.date-arrow{height:18px}.calendar-row{min-width:235px}.flight-summary{grid-template-columns:minmax(0,1fr) 88px 16px}.route-tag{font-size:8px;padding:4px 6px}.summary-price strong{font-size:17px}.timeline{grid-template-columns:1fr}.timeline-mid{padding:3px 0}.timeline-end{text-align:left}.airline-detail-head{gap:12px}.detail-logo{max-width:160px}.flight-number strong{font-size:19px}}