:root {
  color-scheme: light;
  --navy: #10213d;
  --navy-deep: #0b1930;
  --ink: #172944;
  --muted: #718097;
  --line: #e4eaf0;
  --sky: #4e9cda;
  --blue: #286bb6;
  --teal: #74d9d4;
  --paper: #f5f8fb;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: Inter, -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif; -webkit-font-smoothing: antialiased; }
button, input, select, textarea { font: inherit; }
[hidden] { display: none !important; }
button { cursor: pointer; }
a { color: inherit; text-decoration: none; }
svg { display: block; }
.shell { width: min(1180px, calc(100% - 64px)); margin: 0 auto; }

.site-header { height: 76px; background: var(--navy-deep); border-bottom: 1px solid rgba(255,255,255,.09); color: #fff; position: relative; z-index: 5; }
.header-inner, .header-nav, .brand, .header-status { display: flex; align-items: center; }
.header-inner { height: 100%; justify-content: space-between; }
.brand { gap: 11px; font-size: 25px; font-weight: 780; letter-spacing: -.06em; white-space: nowrap; }
.brand-mark { width: 31px; height: 31px; display: grid; place-items: center; border-radius: 9px; background: #77d6d2; color: var(--navy); box-shadow: 0 5px 20px rgba(104,225,221,.18); }
.brand-mark svg { width: 22px; height: 22px; }
.brand-dot { color: #74d9d4; }
.header-nav { gap: 34px; color: #c5d1df; font-size: 14px; font-weight: 550; }
.header-nav a { transition: color .2s; }
.header-nav a:hover { color: #fff; }
.header-status { gap: 8px; color: #dce8ec; border: 1px solid rgba(145,221,220,.28); background: rgba(103,224,218,.08); border-radius: 100px; padding: 8px 13px; font-size: 12px; }
.status-dot { width: 7px; height: 7px; border-radius: 50%; background: #79d9d4; box-shadow: 0 0 0 4px rgba(121,217,212,.13); }

.hero { position: relative; overflow: hidden; background: linear-gradient(112deg, #0b1930 2%, #142c4a 62%, #123f5d 100%); color: #fff; min-height: 470px; }
.hero::before { content: ""; position: absolute; inset: 0; opacity: .17; background-image: radial-gradient(rgba(218,237,255,.65) .7px, transparent .7px); background-size: 23px 23px; mask-image: linear-gradient(90deg, transparent 10%, black 70%); }
.hero-glow { position: absolute; border-radius: 50%; pointer-events: none; }
.hero-glow-one { width: 400px; height: 400px; background: #68d4d0; opacity: .085; filter: blur(85px); left: 48%; top: -190px; }
.hero-glow-two { width: 380px; height: 380px; background: #4a9de0; opacity: .12; filter: blur(90px); right: -150px; bottom: -190px; }
.hero-inner { min-height: 470px; display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 26px; position: relative; padding-bottom: 69px; }
.hero-copy { position: relative; z-index: 2; padding: 32px 0 20px; }
.eyebrow { display: flex; align-items: center; gap: 10px; color: #8dcfcf; font-size: 11px; font-weight: 760; letter-spacing: .19em; }
.eyebrow-line { width: 26px; height: 1px; background: currentColor; }
.hero h1 { font-size: clamp(46px, 5.2vw, 74px); line-height: 1.19; letter-spacing: -.065em; margin: 25px 0 20px; font-weight: 770; }
.hero h1 span { color: #8ee3df; }
.hero p { margin: 0; max-width: 510px; color: #b8cbd9; font-size: 16px; line-height: 1.95; }
.hero-assurance { display: flex; align-items: center; gap: 24px; margin-top: 33px; color: #d3e2e8; font-size: 13px; }
.hero-assurance span { display: inline-flex; align-items: center; gap: 8px; }
.hero-assurance svg { width: 19px; height: 19px; color: #83dcd8; }

.hero-visual { position: relative; height: 350px; min-width: 0; }
.orbital { border: 1px solid rgba(170,225,237,.19); border-radius: 50%; position: absolute; left: 50%; top: 49%; transform: translate(-50%,-50%) rotate(-16deg); }
.orbital-outer { width: 385px; height: 270px; box-shadow: inset 0 0 50px rgba(84,172,207,.06), 0 0 50px rgba(84,172,207,.05); }
.orbital-inner { width: 292px; height: 195px; border-style: dashed; opacity: .62; }
.map-grid { width: 178px; height: 178px; position: absolute; left: 50%; top: 49%; transform: translate(-50%,-50%); border: 1px solid rgba(143,207,221,.19); border-radius: 50%; background: repeating-linear-gradient(0deg, transparent 0 32px, rgba(181,229,236,.13) 33px 34px), repeating-linear-gradient(90deg, transparent 0 34px, rgba(181,229,236,.11) 35px 36px); opacity: .55; }
.map-grid::before, .map-grid::after { content: ""; position: absolute; border: 1px solid rgba(143,207,221,.34); border-radius: 50%; inset: 0 45px; }
.map-grid::after { inset: 0 73px; }
.route-arc { position: absolute; width: 293px; height: 112px; border-top: 2px dashed rgba(118,218,221,.78); border-radius: 50% 50% 0 0; left: 50%; top: 45%; transform: translate(-50%,-50%) rotate(-15deg); filter: drop-shadow(0 0 7px rgba(103,221,220,.3)); }
.route-endpoint { width: 10px; height: 10px; position: absolute; z-index: 2; background: #90e3de; border-radius: 50%; box-shadow: 0 0 0 6px rgba(124,224,218,.18), 0 0 20px #8ce3df; }
.endpoint-start { left: 18%; top: 53%; }
.endpoint-end { right: 18%; top: 30%; }
.hero-plane { position: absolute; left: 50%; top: 27%; width: 58px; height: 58px; display: grid; place-items: center; border: 1px solid rgba(132,228,222,.53); border-radius: 16px; background: linear-gradient(140deg,#a9f2e9,#63c9d2); color: #133450; transform: rotate(12deg); box-shadow: 0 16px 34px rgba(4,16,32,.25), 0 0 44px rgba(105,223,217,.16); }
.hero-plane svg { width: 38px; height: 38px; }
.city-tag { position: absolute; display: flex; flex-direction: column; gap: 3px; padding: 12px 16px; background: rgba(29,55,81,.84); border: 1px solid rgba(199,234,238,.22); border-radius: 12px; backdrop-filter: blur(8px); box-shadow: 0 18px 40px rgba(0,0,0,.14); }
.city-tag small { color: #8fb0bf; font-size: 9px; font-weight: 720; letter-spacing: .15em; }
.city-tag strong { color: #eefaff; font-size: 16px; font-weight: 670; white-space: nowrap; }
.city-tag em { color: #8bded9; font-style: normal; font-size: 12px; margin-left: 3px; }
.tag-start { left: 2%; top: 62%; }
.tag-end { right: 0; top: 1%; }
.visual-caption { position: absolute; right: 3%; bottom: 4%; font-size: 10px; color: rgba(187,218,230,.52); letter-spacing: .15em; }
.visual-caption span { font-size: 14px; padding-left: 5px; }

.search-section { position: relative; z-index: 3; margin-top: -77px; scroll-margin-top: 20px; }
.search-card { background: #fff; border: 1px solid #e7edf3; border-radius: 18px; padding: 27px 31px 19px; box-shadow: 0 24px 55px rgba(19,53,83,.11), 0 4px 13px rgba(19,53,83,.04); }
.search-card-header { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 24px; }
.section-kicker { color: #3c8cad; letter-spacing: .16em; font-size: 10px; line-height: 1.3; font-weight: 800; }
.search-card h2 { margin: 7px 0 0; font-size: 23px; letter-spacing: -.045em; }
.trip-type { display: flex; align-items: center; gap: 8px; padding: 9px 14px; color: #2f719d; border-radius: 100px; background: #eef7fa; font-size: 12px; font-weight: 700; white-space: nowrap; }
.trip-type span { height: 7px; width: 7px; background: #56aec5; border-radius: 50%; }
.search-form { display: grid; grid-template-columns: minmax(0,1fr) 28px minmax(0,1fr) minmax(0,1fr) 166px; align-items: end; gap: 11px; }
.field label { display: block; margin: 0 0 9px 2px; color: #697c92; font-size: 12px; font-weight: 650; }
.select-wrap, .date-wrap { display: flex; align-items: center; position: relative; height: 55px; border: 1px solid #dce5ec; border-radius: 9px; background: #fff; transition: border-color .2s, box-shadow .2s; }
.select-wrap:focus-within, .date-wrap:focus-within { border-color: #4a97c8; box-shadow: 0 0 0 3px rgba(80,155,204,.14); }
.select-wrap > svg, .date-wrap > svg { width: 19px; height: 19px; margin-left: 15px; flex: 0 0 auto; color: #4f85ab; }
.select-wrap select, .date-wrap input { width: 100%; min-width: 0; height: 100%; padding: 0 10px; border: 0; outline: 0; background: transparent; color: #233953; font-size: 15px; font-weight: 680; }
.select-wrap select { appearance: none; padding-right: 25px; cursor: pointer; }
.select-wrap select:invalid { color: #8996a6; }
.chevron { position: absolute; width: 8px; height: 8px; right: 16px; top: 20px; border: solid #879ab0; border-width: 0 1.5px 1.5px 0; transform: rotate(45deg); pointer-events: none; }
.date-wrap input { font-size: 14px; padding-right: 8px; }
.date-wrap input::-webkit-calendar-picker-indicator { cursor: pointer; opacity: .58; }
.swap-button { height: 42px; width: 28px; margin-bottom: 7px; padding: 0; border: 0; background: transparent; color: #4b82a8; display: grid; place-items: center; transition: color .2s, transform .2s; }
.swap-button:hover { color: #1a689f; transform: rotate(180deg); }
.swap-button svg { width: 20px; height: 20px; }
.search-button { height: 55px; border: 0; border-radius: 9px; padding: 0 21px; color: #fff; background: linear-gradient(105deg,#2678bd,#246aa9); box-shadow: 0 8px 16px rgba(34,106,171,.18); font-size: 14px; font-weight: 750; white-space: nowrap; display: flex; align-items: center; justify-content: center; gap: 18px; transition: transform .2s, box-shadow .2s, filter .2s; }
.search-button:hover { transform: translateY(-2px); box-shadow: 0 12px 24px rgba(34,106,171,.25); filter: brightness(1.03); }
.search-button:disabled { cursor: wait; opacity: .65; transform: none; }
.search-button span { font-size: 21px; line-height: 1; font-weight: 400; }
.search-note { display: flex; align-items: center; gap: 7px; margin-top: 18px; padding-top: 15px; border-top: 1px solid #edf1f4; color: #8592a1; font-size: 12px; line-height: 1.6; }
.info-icon { flex: 0 0 auto; display: grid; place-items: center; width: 15px; height: 15px; border: 1px solid #91a0ae; border-radius: 50%; color: #8194a4; font-family: Georgia,serif; font-size: 11px; font-weight: 700; }
.form-message { margin: 12px 0 0; color: #ae3b4a; font-size: 13px; }

.results-section { padding: 66px 0 86px; scroll-margin-top: 20px; }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 20px; margin-bottom: 22px; }
.section-heading h2 { display: flex; align-items: center; gap: 13px; margin: 9px 0 7px; font-size: 29px; line-height: 1.3; letter-spacing: -.05em; }
.section-heading p { margin: 0; color: #7c8a9c; font-size: 14px; }
.mock-badge { padding: 5px 9px; border-radius: 5px; background: #e8f4f7; color: #3d8e9d; font-size: 11px; letter-spacing: 0; font-weight: 730; white-space: nowrap; }
.result-count { color: #7b8999; font-size: 13px; white-space: nowrap; padding-bottom: 3px; }
.results-caution { display: flex; align-items: center; gap: 9px; background: #edf5f7; border: 1px solid #d8eaf0; color: #5d869a; padding: 12px 15px; border-radius: 8px; font-size: 12px; line-height: 1.6; margin-bottom: 17px; }
.results-caution svg { width: 17px; height: 17px; flex: 0 0 auto; }
.flight-list { display: grid; gap: 14px; }
.flight-card { overflow: hidden; border: 1px solid #e2eaf0; background: #fff; border-radius: 13px; box-shadow: 0 4px 22px rgba(22,63,95,.035); transition: border-color .2s, box-shadow .2s, transform .2s; }
.flight-card:hover { border-color: #cbdde9; box-shadow: 0 13px 32px rgba(22,63,95,.09); transform: translateY(-2px); }
.flight-main { min-height: 113px; display: grid; grid-template-columns: 230px minmax(0,1fr) 100px; align-items: center; gap: 16px; padding: 20px 25px; }
.airline-details { display: flex; align-items: center; gap: 13px; min-width: 0; }
.airline-avatar { display: grid; place-items: center; flex: 0 0 auto; width: 41px; height: 41px; border-radius: 11px; background: color-mix(in srgb, var(--airline-color) 11%, white); color: var(--airline-color); font-weight: 850; font-size: 12px; letter-spacing: .02em; }
.airline-details strong, .airline-details small { display: block; }
.airline-details strong { font-size: 14px; font-weight: 750; white-space: nowrap; }
.airline-details small { margin-top: 5px; color: #93a0af; font-size: 11px; white-space: nowrap; }
.flight-timeline { display: grid; grid-template-columns: 100px minmax(100px,1fr) 100px; align-items: center; width: 100%; max-width: 470px; justify-self: center; }
.time-point strong, .time-point span { display: block; }
.time-point strong { color: #192c45; font-size: 26px; letter-spacing: -.06em; line-height: 1.1; font-weight: 750; }
.time-point span { margin-top: 8px; color: #77899c; font-size: 12px; }
.time-point.arrival { text-align: right; }
.time-route { text-align: center; color: #8da0ad; font-size: 11px; }
.time-route small { color: #93a2b0; font-size: 10px; }
.route-line { display: flex; align-items: center; width: 100%; margin: 5px 0 3px; color: #79aeca; }
.route-line i { display: block; height: 1px; background: #cbdde6; flex: 1; position: relative; }
.route-line i:first-child::before, .route-line i:last-child::after { content: ""; position: absolute; width: 5px; height: 5px; top: -2px; border-radius: 50%; background: #a5c9d9; }
.route-line i:first-child::before { left: 0; }
.route-line i:last-child::after { right: 0; }
.route-line svg { width: 20px; height: 20px; transform: rotate(42deg); margin: 0 2px; }
.flight-meta { text-align: right; }
.flight-meta span { display: inline-block; padding: 6px 9px; color: #7299a7; background: #f0f7f8; border-radius: 5px; font-size: 11px; font-weight: 750; white-space: nowrap; }
.flight-meta small { display: block; margin-top: 8px; font-size: 11px; color: #99a5b1; }
.flight-links { display: flex; align-items: center; justify-content: space-between; gap: 16px; background: #fafdff; border-top: 1px solid #ecf1f4; padding: 12px 25px; }
.links-label { color: #8798a8; font-size: 11px; }
.links-actions { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.platform-link { display: inline-flex; align-items: center; justify-content: center; gap: 9px; padding: 9px 14px; border: 1px solid #dce7ee; background: #fff; border-radius: 7px; color: #386c90; white-space: nowrap; font-size: 12px; font-weight: 700; transition: border-color .2s, background .2s, color .2s; }
.platform-link:hover { border-color: #69afd0; background: #f0f9fc; color: #146a9b; }
.platform-link span { font-size: 14px; line-height: .8; }
.airline-link { color: #fff; background: #226eaa; border-color: #226eaa; }
.airline-link:hover { background: #175b90; border-color: #175b90; color: #fff; }
.loading-state, .empty-state { padding: 45px 20px; border: 1px dashed #cddce6; border-radius: 12px; text-align: center; color: #71889b; background: #fff; font-size: 14px; }

.how-section { background: #fff; padding: 80px 0; border-top: 1px solid #eaf0f4; border-bottom: 1px solid #eaf0f4; }
.how-inner { display: grid; grid-template-columns: .9fr 1.1fr; align-items: center; gap: 85px; }
.how-title-wrap h2 { margin: 13px 0 16px; color: #192c46; font-size: 34px; line-height: 1.34; letter-spacing: -.06em; }
.how-title-wrap p { max-width: 280px; margin: 0; font-size: 13px; line-height: 1.9; color: #8493a1; }
.steps { display: grid; gap: 0; }
.step { display: grid; grid-template-columns: 52px 1fr; gap: 14px; padding: 17px 0; border-bottom: 1px solid #ecf1f4; }
.step:first-child { padding-top: 0; }
.step:last-child { border-bottom: 0; padding-bottom: 0; }
.step-index { color: #68a9bf; font-size: 12px; font-weight: 750; padding-top: 3px; letter-spacing: .04em; }
.step h3 { margin: 0 0 6px; font-size: 15px; }
.step p { margin: 0; font-size: 12px; line-height: 1.8; color: #8796a4; }
.ad-section { padding: 45px 0 58px; background: var(--paper); }
.ad-placeholder { min-height: 104px; display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 8px; border: 1px dashed #cfdbe6; border-radius: 11px; background: #f9fbfd; color: #9aa8b5; font-size: 12px; letter-spacing: .015em; }
.ad-label { padding: 4px 8px; border: 1px solid #d5e0e7; border-radius: 4px; color: #8496a5; font-size: 10px; font-weight: 650; }

.footer { background: #0e2038; color: #b3c3d3; }
.footer-inner { padding-top: 34px; }
.footer-top { display: flex; justify-content: space-between; align-items: center; padding-bottom: 27px; border-bottom: 1px solid rgba(205,224,238,.12); color: #98adc0; font-size: 12px; }
.footer-brand { color: #fff; font-size: 22px; }
.footer-brand .brand-mark { width: 28px; height: 28px; }
.footer-brand .brand-mark svg { width: 19px; height: 19px; }
.disclaimer { display: grid; grid-template-columns: 82px 1fr; gap: 18px; padding: 26px 0; border-bottom: 1px solid rgba(205,224,238,.12); }
.disclaimer strong { color: #e6eff7; font-size: 12px; }
.disclaimer p { max-width: 940px; margin: 0; color: #91a6b9; font-size: 12px; line-height: 1.9; }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; padding: 19px 0 25px; color: #8198ac; font-size: 11px; }

:focus-visible { outline: 3px solid #7dd9db; outline-offset: 3px; }

/* 官方导航：仅本地行程整理与外链，无第三方脚本或字体。 */
.select-wrap input { width: 100%; min-width: 0; height: 100%; padding: 0 12px; border: 0; border-radius: 9px; outline: 0; background: transparent; color: #233953; font-size: 15px; font-weight: 680; }
.select-wrap input::placeholder { color: #8c9bad; font-size: 12px; font-weight: 400; }
.journey-card { display: flex; align-items: center; gap: 35px; padding: 25px 28px; border: 1px solid #dbe8ee; border-radius: 14px; background: #fff; box-shadow: 0 5px 25px #163f5f05; }
.journey-route { display: flex; align-items: center; gap: 35px; flex: 1; }
.journey-route > div { display: grid; gap: 6px; }
.journey-route small { color: #7294a8; font-size: 11px; font-weight: 750; letter-spacing: .08em; }
.journey-route strong { color: #152d49; font-size: 29px; letter-spacing: -.035em; overflow-wrap: anywhere; }
.journey-arrow { color: #6daec2; font-size: 27px; }
.journey-date { display: grid; gap: 9px; padding-left: 28px; border-left: 1px solid #e8eff3; }
.journey-date span { color: #7c90a2; font-size: 11px; }
.journey-date strong { color: #304c67; font-size: 14px; }
.copy-button { display: inline-flex; align-items: center; justify-content: center; gap: 18px; border: 1px solid #cfe2ea; border-radius: 8px; background: #edf7f8; color: #277689; padding: 12px 18px; font-size: 13px; font-weight: 750; white-space: nowrap; }
.copy-button:hover { background: #e0f0f3; border-color: #7dbac7; }
.copy-button span { font-size: 18px; }
.query-status, .copy-message { font-size: 12px; line-height: 1.7; margin: 11px 3px 0; color: #7a8e9f; }
.copy-message { color: #227a83; }
.copy-message:empty { display: none; }
.manual-copy { margin-top: 14px; }
.manual-copy label { display: block; color: #647b8f; font-size: 12px; margin-bottom: 6px; }
.manual-copy textarea { width: 100%; padding: 12px; border: 1px solid #c9dbe7; border-radius: 8px; color: #304c67; background: #fff; resize: vertical; font-size: 13px; }
.subsection-heading { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin: 34px 0 17px; }
.subsection-heading h3 { font-size: 21px; margin: 0; letter-spacing: -.025em; }
.subsection-heading .section-kicker { margin-bottom: 9px; }
.subsection-heading > span { color: #8495a5; font-size: 12px; }
.platform-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 15px; }
.navigation-card { display: flex; flex-direction: column; border: 1px solid #e0e8ef; border-radius: 12px; padding: 23px 22px 19px; background: #fff; transition: border-color .2s, box-shadow .2s; }
.navigation-card:hover { border-color: #bed5e3; box-shadow: 0 10px 25px #163f5f09; }
.provider-heading { display: flex; align-items: center; gap: 12px; }
.provider-icon { display: grid; place-items: center; width: 41px; height: 41px; border-radius: 11px; color: var(--provider-color); background: color-mix(in srgb,var(--provider-color) 10%,white); font-size: 12px; font-weight: 850; }
.provider-heading h3 { margin: 0 0 4px; font-size: 16px; }
.entry-label { color: #889cab; font-size: 10px; }
.navigation-card > p { margin: 17px 0 20px; color: #778d9f; font-size: 12px; line-height: 1.8; flex: 1; }
.provider-bottom { display: flex; justify-content: space-between; align-items: center; gap: 8px; padding-top: 14px; border-top: 1px solid #edf2f5; }
.provider-bottom small { color: #8a9aa7; font-size: 10px; }
.provider-bottom .platform-link { padding: 9px 11px; }
.navigation-note { margin-top: 18px; margin-bottom: 0; }
.airlines-section { padding-top: 25px; scroll-margin-top: 25px; }
.directory-filters { display: grid; grid-template-columns: 1fr 250px; gap: 16px; margin-bottom: 12px; }
.directory-filters label { display: block; font-size: 11px; font-weight: 650; color: #71869b; margin: 0 0 7px 2px; }
.directory-filters input, .directory-filters select { width: 100%; min-width: 0; padding: 13px 14px; height: 46px; color: #304e67; background: #fff; border: 1px solid #dbe5ec; border-radius: 8px; font-size: 13px; }
.directory-note { font-size: 11px; color: #8a9aa8; line-height: 1.8; margin: 12px 2px 18px; }
.airline-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 11px; }
.airline-grid > .empty-state { grid-column: 1/-1; }
.airline-entry { display: flex; align-items: center; gap: 13px; background: #fff; border: 1px solid #e1eaf0; border-radius: 10px; padding: 17px; }
.airline-code { display: grid; place-items: center; flex: 0 0 auto; width: 36px; height: 36px; background: #eff5f9; border-radius: 9px; font-size: 11px; font-weight: 800; color: #58849e; }
.airline-entry-info { min-width: 0; flex: 1; }
.airline-entry h3 { margin: 0; font-size: 13px; }
.airline-entry p { margin: 6px 0 0; color: #8b9aaa; font-size: 10px; line-height: 1.6; }
.airline-entry .platform-link { font-size: 11px; padding: 9px 11px; flex: 0 0 auto; }
.official-flights { margin: 28px 0; }
.official-flights > p { color: #7c90a2; font-size: 12px; }
.official-card { padding: 22px; display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.official-card h3 { font-size: 15px; margin: 0 0 9px; }
.official-card p, .official-card .links-actions { color: #778d9f; font-size: 12px; }
.noscript-note { padding: 20px; background: #fff; color: #304c67; text-align: center; line-height: 2; }
.noscript-note a { text-decoration: underline; }

@media (max-width:1050px) {
  .platform-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .journey-card { gap: 20px; padding: 22px; }
  .journey-route { gap: 20px; }
  .journey-date { padding-left: 18px; }
}

@media (max-width:720px) {
  .select-wrap input { padding-left: 11px; font-size: 13px; }
  .journey-card { flex-wrap: wrap; padding: 20px; gap: 20px 12px; }
  .journey-route { flex: 1 1 100%; gap: 25px; }
  .journey-route strong { font-size: 26px; }
  .journey-date { padding: 0; border: 0; flex: 1; }
  .journey-date strong { font-size: 12px; }
  .copy-button { padding: 10px 13px; font-size: 12px; gap: 10px; }
  .subsection-heading { margin-top: 30px; align-items: center; }
  .subsection-heading h3 { font-size: 19px; }
  .subsection-heading > span { font-size: 10px; max-width: 140px; text-align: right; }
  .platform-grid { grid-template-columns: 1fr; gap: 12px; }
  .navigation-card { padding: 19px; }
  .navigation-card > p { margin: 13px 0; }
  .provider-bottom .platform-link { flex: 0 0 auto; }
  .directory-filters { grid-template-columns: 1fr; gap: 12px; }
  .airline-grid { grid-template-columns: 1fr; }
  .airline-entry { padding: 15px; gap: 10px; }
  .airline-entry .platform-link { flex: 0 0 auto; }
  .official-card { align-items: flex-start; flex-direction: column; }
}

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

@media (max-width: 1050px) {
  .hero-visual { transform: scale(.84); transform-origin: center; }
  .search-form { grid-template-columns: minmax(0,1fr) 25px minmax(0,1fr) minmax(0,1fr); }
  .search-button { grid-column: 1 / -1; }
  .flight-main { grid-template-columns: 200px minmax(0,1fr) 85px; gap: 8px; padding: 20px; }
  .flight-timeline { grid-template-columns: 75px minmax(80px,1fr) 75px; }
}

@media (max-width: 720px) {
  .shell { width: min(100% - 32px, 540px); }
  .site-header { height: 64px; }
  .brand { font-size: 22px; }
  .header-nav { gap: 12px; }
  .header-nav a { display: none; }
  .header-status { padding: 7px 10px; font-size: 11px; }
  .hero { min-height: 600px; }
  .hero-inner { min-height: 600px; grid-template-columns: 1fr; gap: 0; align-content: start; padding-bottom: 85px; }
  .hero-copy { padding-top: 52px; }
  .hero h1 { font-size: clamp(43px, 11vw, 58px); margin-top: 20px; }
  .hero p { font-size: 14px; line-height: 1.8; }
  .hero-assurance { margin-top: 21px; gap: 17px; font-size: 11px; }
  .hero-visual { height: 230px; width: min(100%,430px); justify-self: center; margin-top: -8px; transform: scale(.72); transform-origin: top center; }
  .search-section { margin-top: -75px; }
  .search-card { border-radius: 14px; padding: 23px 19px 18px; }
  .search-card-header { margin-bottom: 20px; }
  .search-card h2 { font-size: 21px; }
  .trip-type { padding: 7px 10px; font-size: 10px; }
  .search-form { grid-template-columns: minmax(0,1fr) 26px minmax(0,1fr); gap: 10px 6px; }
  .city-field { min-width: 0; }
  .field label { font-size: 11px; }
  .select-wrap, .date-wrap, .search-button { height: 51px; }
  .select-wrap > svg { display: none; }
  .select-wrap select { padding-left: 11px; font-size: 13px; padding-right: 20px; }
  .chevron { right: 11px; }
  .swap-button { width: 26px; }
  .date-field { grid-column: 1 / -1; }
  .search-button { grid-column: 1 / -1; }
  .search-note { align-items: flex-start; font-size: 11px; }
  .results-section { padding: 54px 0 65px; }
  .section-heading h2 { font-size: 24px; gap: 9px; }
  .section-heading p { font-size: 12px; }
  .result-count { font-size: 11px; }
  .results-caution { align-items: flex-start; font-size: 11px; }
  .flight-main { display: block; padding: 18px; }
  .airline-details { margin-bottom: 23px; }
  .flight-timeline { max-width: none; grid-template-columns: 78px minmax(75px,1fr) 78px; }
  .time-point strong { font-size: 24px; }
  .flight-meta { display: flex; justify-content: space-between; align-items: center; margin-top: 18px; text-align: left; }
  .flight-meta small { margin: 0; }
  .flight-links { align-items: flex-start; flex-direction: column; padding: 14px 18px; gap: 12px; }
  .links-actions { width: 100%; }
  .platform-link { flex: 1 1 auto; font-size: 11px; padding: 10px 8px; }
  .how-section { padding: 60px 0; }
  .how-inner { grid-template-columns: 1fr; gap: 32px; }
  .how-title-wrap h2 { font-size: 29px; }
  .ad-section { padding: 34px 0 43px; }
  .footer-top { align-items: flex-start; gap: 12px; }
  .footer-top > span { text-align: right; max-width: 150px; }
  .disclaimer { display: block; }
  .disclaimer p { margin-top: 10px; }
}

@media (max-width: 390px) {
  .shell { width: calc(100% - 24px); }
  .hero-assurance { gap: 10px; }
  .hero-visual { transform: scale(.62); }
  .search-card { padding-left: 14px; padding-right: 14px; }
  .flight-timeline { grid-template-columns: 68px minmax(65px,1fr) 68px; }
  .time-point strong { font-size: 21px; }
  .time-route { font-size: 10px; }
  .airline-details strong { font-size: 13px; }
}

@media (max-width:720px) {
  .section-heading { flex-wrap: wrap; align-items: flex-start; gap: 9px; }
  .section-heading > div:first-child { flex: 1 1 100%; }
  .section-heading h2 { display: block; font-size: 22px; }
  .section-heading .mock-badge { display: inline-block; margin-left: 8px; vertical-align: middle; }
}
/* 国内目的地快捷选择 */
.scope-tabs{display:flex;gap:8px;margin:0 0 23px;border-bottom:1px solid #edf1f5;padding-bottom:14px;flex-wrap:wrap}
.scope-tabs button{border:0;border-radius:7px;padding:9px 13px;background:#f1f5f8;color:#8493a4;font-size:13px}
.scope-tabs button.active{color:#226fab;background:#e9f5fa;font-weight:750}.scope-tabs button:disabled{cursor:default;opacity:.75}.scope-tabs small{font-size:10px;margin-left:6px}
.select-wrap::after{content:'⌄';color:#7590aa;margin-right:14px;pointer-events:none}.select-wrap input{padding-right:4px}
.picker-backdrop{display:none}.city-picker{position:fixed;z-index:100;display:flex;flex-direction:column;background:#fff;border:1px solid #dce7ef;border-radius:15px;box-shadow:0 18px 65px #112c4b35;padding:23px;color:var(--ink);overflow:hidden}
.picker-heading{display:flex;align-items:center;justify-content:space-between;gap:10px}.picker-heading h3{font-size:20px;margin:6px 0 15px}.picker-heading button{border:0;background:#f1f6f9;border-radius:50%;width:30px;height:30px;color:#708398;font-size:22px;align-self:flex-start}
.picker-tools{display:flex;gap:10px;flex-shrink:0}.picker-search{display:flex;align-items:center;gap:8px;border:1px solid #d9e6ef;border-radius:8px;flex:1;min-width:0;padding:0 12px}.picker-search span{font-size:24px;color:#6097b6}.picker-search input{border:0;background:transparent;outline:0;width:100%;height:41px;min-width:0;font-size:13px;color:#284460}.picker-tools select{max-width:135px;border:1px solid #d9e6ef;border-radius:8px;padding:0 8px;background:white;color:#526d85;font-size:12px}
.picker-tabs{display:flex;gap:5px;margin:17px 0 12px;flex-shrink:0}.picker-tabs button{flex:1;padding:8px 3px;font-size:12px;color:#74879a;border:0;border-bottom:2px solid transparent;background:transparent;border-radius:5px 5px 0 0}.picker-tabs button[aria-selected=true]{color:#226fa8;background:#eef7fb;border-bottom-color:#3489bb;font-weight:750}
.picker-count{font-size:11px;color:#8799a9;margin-bottom:10px}.picker-results{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px;overflow-y:auto;min-height:75px;padding-right:5px;overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:#cbdbe5 transparent}
.city-option{border:1px solid #e7eef4;border-radius:8px;min-width:0;background:#fcfdff}.city-choice{display:flex;align-items:center;justify-content:space-between;gap:4px;padding:11px 10px;width:100%;background:transparent;border:0;text-align:left;color:#244462;border-radius:7px}.city-choice:hover,.city-choice:focus-visible{background:#eef7fb}.city-choice span{min-width:0}.city-choice strong{display:block;font-size:13px;overflow-wrap:anywhere}.city-choice small{display:block;color:#93a2b0;font-size:10px;margin-top:5px}.city-choice em{font-style:normal;font-size:9px;color:#6e9bb6;max-width:50px;text-align:right;line-height:1.6}.airport-choices{display:grid;gap:4px;padding:0 7px 7px}.airport-choices button{border:0;border-radius:4px;background:#f0f5f8;color:#638198;padding:6px 5px;text-align:left;font-size:10px;line-height:1.5}.airport-choices button:hover{background:#e2f0f8;color:#246c99}.airport-choices small{white-space:nowrap;color:#8a9cac;font-size:9px}
.picker-empty{grid-column:1/-1;padding:25px 12px;color:#8295a5;font-size:13px;line-height:1.8;text-align:center}.picker-footer{display:grid;gap:5px;font-size:10px;color:#93a4b3;border-top:1px solid #edf2f6;margin-top:14px;padding-top:11px;line-height:1.6;flex-shrink:0}.picker-footer a{color:#5585a4}.official-card small{color:#8ba0b0;font-size:11px}.official-card p{line-height:1.9}
@media(max-width:720px){.picker-backdrop{display:block;position:fixed;inset:0;z-index:99;background:#10213d66;backdrop-filter:blur(3px)}.city-picker{left:12px!important;right:12px;top:9vh!important;width:auto!important;max-height:82vh!important;padding:18px}.picker-results{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.picker-heading h3{font-size:18px}.picker-tools{gap:7px}.picker-tools select{max-width:97px}.picker-search{padding:0 8px}.picker-search input{font-size:11px}.picker-tabs{gap:0}.picker-tabs button{font-size:10px;padding:9px 2px}.city-choice{min-height:60px}.scope-tabs{gap:5px}.scope-tabs button{font-size:11px;padding:8px 10px}.picker-footer{font-size:9px}.select-wrap::after{margin-right:8px}}

/* 官方行程卡片：宽屏横排；窄窗口按时间、航司、查价的顺序纵向阅读。 */
.flight-list, .itinerary-group, .itinerary-card, .itinerary-main > *, .segment-row > * { min-width: 0; }
.flight-filter { display:flex; align-items:center; gap:9px; flex-wrap:wrap; padding:13px 16px; border:1px solid #dee8ef; background:#fff; border-radius:12px; }
.flight-filter button { border:0; border-radius:7px; background:#f1f5f8; color:#617b8e; padding:11px 13px; font-size:13px; cursor:pointer; }
.flight-filter button[aria-pressed=true] { background:#e4f4f6; color:#147d8c; font-weight:750; }
.flight-filter button span { margin-left:9px; font-size:11px; opacity:.7; }
.flight-filter > small { margin-left:auto; color:#8a9eac; font-size:11px; }
.itinerary-group { display:grid; gap:13px; }
.itinerary-group-heading { display:flex; align-items:center; gap:12px; margin:6px 0 0; padding:10px 0; }
.itinerary-group-heading h4 { font-size:17px; margin:0; color:#243e53; }
.itinerary-group-heading > span { color:#8a9eac; font-size:12px; }
.official-card.itinerary-card { display:block; padding:0; }
.itinerary-main { display:grid; grid-template-columns:minmax(150px,230px) minmax(0,1fr) 110px; gap:24px; align-items:center; padding:25px; }
.itinerary-airlines { display:grid; gap:13px; }
.itinerary-carrier { display:flex; align-items:center; gap:11px; min-width:0; }
.itinerary-carrier > div { min-width:0; overflow-wrap:anywhere; }
.carrier-code { display:grid; place-items:center; flex:0 0 35px; height:35px; border-radius:10px; background:#edf4f8; color:#2879a0; font-size:11px; font-weight:800; }
.itinerary-carrier strong { display:block; color:#233d52; font-size:13px; line-height:1.5; }
.itinerary-carrier small { display:block; margin-top:3px; color:#7895a8; font-size:11px; }
.itinerary-card .flight-timeline { max-width:510px; grid-template-columns:minmax(0,1fr) minmax(0,1.1fr) minmax(0,1fr); gap:14px; }
.flight-timeline > * { min-width:0; }
.itinerary-card .time-point strong { font-size:32px; letter-spacing:-1px; position:relative; white-space:nowrap; }
.itinerary-card .time-point > span { font-size:12px; line-height:1.7; min-height:21px; color:#54748b; overflow-wrap:anywhere; }
.itinerary-card .time-point > small { display:block; color:#9baab5; font-size:10px; margin-top:4px; }
.day-offset { font-size:10px; color:#168dba; letter-spacing:0; margin-left:4px; position:absolute; top:-12px; right:0; }
.total-duration { font-size:11px; color:#8195a5; }
.itinerary-card .route-line { margin:9px 0; color:#8ebace; gap:5px; }
.journey-pill { display:inline-block; font-size:11px; color:#468798; }
.journey-pill.is-transfer { color:#ac7c36; }
.transfer-cities { display:block; line-height:1.6; margin-top:5px; overflow-wrap:anywhere; }
.itinerary-price { text-align:right; }
.journey-type { display:inline-block; color:#27848e; background:#eaf6f5; border-radius:5px; padding:6px 10px; font-size:11px; font-weight:700; }
.journey-type.is-transfer { color:#9e7534; background:#faf3e6; }
.itinerary-price small { display:block; margin-top:10px; color:#99a9b6; font-size:11px; }
.itinerary-card .flight-links { display:block; padding:14px 24px; }
.itinerary-card .links-label { display:block; margin-bottom:10px; font-size:10px; line-height:1.6; }
.itinerary-card .links-actions { gap:8px; }
.itinerary-card .platform-link { min-width:0; min-height:42px; font-size:12px; padding:9px 12px; white-space:normal; line-height:1.5; }
.link-copy { min-width:0; overflow-wrap:anywhere; }
.itinerary-card .link-note { color:inherit; }
.link-note { display:inline; margin-left:5px; font-size:10px; opacity:.8; }
.unlisted-airline { font-size:11px; color:#8f9da7; padding:8px; }
.segment-details { border-top:1px solid #edf2f5; background:#fcfdfe; }
.segment-details > summary { cursor:pointer; font-size:12px; color:#3e7b9c; padding:14px 25px; min-height:44px; }
.segment-details > summary:focus-visible, .alternative-entry > summary:focus-visible { outline:2px solid #286bb6; outline-offset:-3px; border-radius:6px; }
.segment-list { padding:0 25px 5px; }
.segment-row { display:grid; grid-template-columns:minmax(150px,230px) minmax(0,1fr) 80px; gap:22px; align-items:center; padding:16px 0; }
.segment-times { display:grid; grid-template-columns:70px minmax(0,1fr) 70px; gap:12px; align-items:center; }
.segment-times > span:last-child { text-align:right; }
.segment-times b { position:relative; font-size:18px; color:#2e475c; white-space:nowrap; }
.segment-times small { display:block; color:#9baab5; font-size:10px; margin-top:4px; }
.segment-airports { font-size:11px; color:#6b8497; text-align:center; line-height:1.6; overflow-wrap:anywhere; }
.segment-airports i { font-style:normal; color:#aac2d0; display:block; }
.segment-duration { text-align:right; font-size:11px; color:#91a3af; }
.transfer-stop { border-left:2px solid #b7d4df; border-radius:0 5px 5px 0; padding:9px 14px; margin-left:46px; background:#eff6f9; color:#608196; font-size:11px; line-height:1.7; overflow-wrap:anywhere; }
.transfer-stop > span { margin-right:8px; color:#80abbf; }
.itinerary-card .transfer-disclaimer { padding:0 25px 12px; margin:0; font-size:10px; line-height:1.8; color:#879ba9; }
.alternative-entry { padding:0 24px; border-top:1px solid #edf2f5; color:#8499a8; font-size:10px; }
.alternative-entry summary { cursor:pointer; padding:14px 0; min-height:44px; line-height:1.7; }
.alternative-entry > div { padding-bottom:12px; }
@media(max-width:1050px) {
  .itinerary-main { grid-template-columns:165px minmax(0,1fr); gap:20px; }
  .itinerary-price { display:none; }
  .segment-row { grid-template-columns:150px minmax(0,1fr); gap:16px; }
  .segment-duration { display:none; }
}
@media(max-width:800px) {
  .itinerary-main { grid-template-columns:minmax(0,1fr); gap:19px; padding:22px; }
  .itinerary-card .flight-timeline { grid-row:1; width:100%; max-width:none; }
  .itinerary-airlines { display:flex; flex-wrap:wrap; gap:12px 20px; }
  .itinerary-carrier { flex:0 1 auto; }
  .segment-row { grid-template-columns:minmax(0,1fr); gap:13px; }
  .segment-times { grid-template-columns:65px minmax(0,1fr) 65px; }
  .transfer-stop { margin-left:0; }
}
@media(max-width:650px) {
  .itinerary-main { padding:23px 16px 17px; gap:18px; }
  .itinerary-airlines { gap:12px; }
  .itinerary-main .itinerary-carrier { flex:1 1 125px; }
  .itinerary-carrier { gap:8px; }
  .itinerary-carrier strong { font-size:12px; }
  .carrier-code { flex-basis:28px; height:28px; border-radius:8px; font-size:10px; }
  .itinerary-card .flight-timeline { grid-template-columns:minmax(0,1fr) minmax(0,.95fr) minmax(0,1fr); gap:10px; }
  .itinerary-card .time-point strong { font-size:28px; }
  .itinerary-card .time-point > span { font-size:11px; }
  .itinerary-card .flight-links { padding:13px 14px; }
  .itinerary-card .links-actions { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); align-items:stretch; gap:7px; }
  .itinerary-card .platform-link { justify-content:center; padding:10px 6px; gap:4px; text-align:center; font-size:12px; }
  .itinerary-card .platform-link > span[aria-hidden] { align-self:flex-start; font-size:11px; }
  .link-note { display:block; margin:3px 0 0; font-size:10px; font-weight:400; }
  .itinerary-card .airline-link, .unlisted-airline { grid-column:1/-1; }
  .airline-link .link-copy { display:flex; flex-wrap:wrap; justify-content:center; align-items:center; gap:0 6px; }
  .airline-link .link-note { margin:0; }
  .segment-list { padding:0 16px 5px; }
  .segment-details > summary { padding:14px 16px; }
  .segment-times { grid-template-columns:58px minmax(0,1fr) 58px; gap:8px; }
  .segment-times b { font-size:18px; }
  .itinerary-card .transfer-disclaimer { padding:0 16px 14px; }
  .alternative-entry { padding:0 16px; }
  .flight-filter { padding:9px; gap:6px; }
  .flight-filter button { padding:11px 9px; font-size:12px; flex:1 1 auto; }
  .flight-filter button span { margin-left:5px; }
  .flight-filter > small { width:100%; margin-top:3px; margin-left:0; }
  .itinerary-group-heading h4 { font-size:16px; }
}
@media(max-width:360px) {
  .itinerary-card .time-point strong { font-size:25px; }
  .itinerary-card .flight-timeline { gap:7px; }
  .total-duration { font-size:10px; }
}