:root{--sky:#eaf7ff;--blue:#126fe8;--deep:#16345b;--cyan:#55c9f3;--sun:#ffca67;--white:#fff;--muted:#617a98;--line:#cce5f4;--cloud:#f7fcff}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--deep);background:var(--white);font-family:"Microsoft YaHei","PingFang SC",sans-serif;line-height:1.75}a{color:inherit;text-decoration:none}img{display:block;max-width:100%}.wrap{width:min(1200px,calc(100% - 46px));margin:auto}.skip{position:fixed;z-index:99;top:8px;left:8px;padding:8px 14px;color:#fff;background:var(--blue);transform:translateY(-160%)}.skip:focus{transform:none}
.header{position:sticky;z-index:40;top:0;background:rgba(255,255,255,.9);border-bottom:1px solid var(--line);backdrop-filter:blur(18px)}.nav{min-height:74px;display:flex;align-items:center;gap:30px}.brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:900}.brandmark{width:39px;height:39px;display:grid;place-items:center;color:#fff;background:var(--blue);border-radius:50% 50% 50% 13px}.links{margin-left:auto;display:flex;gap:26px;color:#55708d;font-size:12px}.links a:hover,.links a[aria-current=page]{color:var(--blue)}.locale{color:#99adbf;font-size:10px}.btn{display:inline-flex;min-height:44px;align-items:center;justify-content:center;padding:10px 19px;color:var(--blue);background:#fff;border:1px solid #a9d5f3;border-radius:999px;font-size:12px;font-weight:900;white-space:nowrap;word-break:keep-all;writing-mode:horizontal-tb;box-shadow:0 7px 18px rgba(25,101,161,.08)}.btn:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(25,101,161,.15)}.btn-main{color:#fff;background:var(--blue);border-color:var(--blue)}.menu{display:none;margin-left:auto;width:42px;height:42px;color:var(--blue);background:#fff;border:1px solid var(--line);border-radius:50%}
.hero{position:relative;min-height:770px;padding:95px 0 65px;overflow:hidden;background:linear-gradient(180deg,#fafdff,var(--sky))}.hero:before,.hero:after{content:"";position:absolute;background:#fff;border-radius:50%}.hero:before{width:480px;height:150px;left:-140px;bottom:80px;box-shadow:280px 40px 0 55px rgba(255,255,255,.65)}.hero:after{width:320px;height:100px;right:-90px;top:110px;box-shadow:-180px 36px 0 34px rgba(255,255,255,.58)}.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1fr 500px;align-items:center;gap:55px}.tag{display:inline-flex;align-items:center;gap:8px;padding:7px 13px;color:#1b6dc3;background:#fff;border:1px solid var(--line);border-radius:999px;font-size:10px;font-weight:800}.tag:before{content:"";width:7px;height:7px;background:#4acb9a;border-radius:50%}.hero h1,.page-hero h1{margin:24px 0;font-size:clamp(53px,7vw,88px);line-height:1.02;letter-spacing:-.065em}.hero h1 span{display:block;color:var(--blue)}.lead{max-width:650px;color:var(--muted);font-size:16px}.actions{display:flex;flex-wrap:wrap;gap:11px;margin-top:31px}.sky-window{position:relative;height:530px;display:grid;place-items:center}.sky-window:before{content:"";position:absolute;width:440px;height:440px;background:linear-gradient(145deg,#fff,#d7f0ff);border-radius:48% 52% 64% 36% / 44% 42% 58% 56%;box-shadow:inset 0 0 0 1px #fff,0 35px 80px rgba(44,127,190,.18)}.sky-window img{position:relative;width:78%;height:78%;object-fit:contain;filter:drop-shadow(0 25px 28px rgba(34,95,145,.2))}.flight-chip{position:absolute;padding:10px 14px;background:rgba(255,255,255,.92);border:1px solid var(--line);border-radius:13px;box-shadow:0 12px 30px rgba(31,100,152,.12);font-size:10px}.fc1{top:12%;left:0}.fc2{right:0;bottom:18%}.flight-chip b{display:block;color:var(--blue);font-size:15px}
.trust{position:relative;z-index:2;display:flex;align-items:center;justify-content:center;gap:0;margin-top:70px}.trust span{padding:8px 27px;color:#587895;font-size:11px}.trust span+span{border-left:1px solid #b9dcec}.trust b{color:#21a777;margin-right:7px}.section{padding:110px 0}.section-sky{background:var(--sky)}.section-cloud{background:var(--cloud)}.head{max-width:800px;margin-bottom:58px}.head.center{margin-inline:auto;text-align:center}.head small{color:var(--blue);font-size:10px;font-weight:900;letter-spacing:.16em;text-transform:uppercase}.head h2{margin:13px 0 15px;font-size:clamp(36px,5vw,58px);line-height:1.12;letter-spacing:-.05em}.head p{color:var(--muted)}
.altitude{display:grid;grid-template-columns:repeat(4,1fr);gap:13px}.alt{padding:28px;background:#fff;border:1px solid var(--line);border-radius:27px 27px 27px 8px}.alt strong{display:block;color:var(--blue);font-size:37px}.alt span{color:var(--muted);font-size:11px}.fine{margin-top:12px;color:#8399ae;font-size:10px;text-align:right}
.feature-clouds{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}.feature-main,.feature-side article{background:#fff;border:1px solid var(--line);box-shadow:0 18px 45px rgba(52,125,178,.08)}.feature-main{min-height:500px;padding:44px;border-radius:40px 40px 14px 40px;display:flex;flex-direction:column;overflow:hidden}.feature-main h3,.feature-side h3{margin:20px 0 10px;font-size:27px}.feature-main p,.feature-side p{color:var(--muted);font-size:13px}.feature-main img{height:240px;margin-top:auto;object-fit:contain}.feature-side{display:grid;gap:18px}.feature-side article{padding:30px;border-radius:30px 10px 30px 30px}.symbol{width:44px;height:44px;display:grid;place-items:center;color:#fff;background:var(--blue);border-radius:50%}
.routes{position:relative;padding-top:30px}.route-line{position:absolute;top:74px;right:7%;left:7%;height:2px;background:repeating-linear-gradient(90deg,#77bde8 0 8px,transparent 8px 15px)}.cities{position:relative;display:grid;grid-template-columns:repeat(5,1fr);gap:20px}.city{text-align:center}.dot{width:17px;height:17px;margin:35px auto 24px;background:#fff;border:4px solid var(--blue);border-radius:50%;box-shadow:0 0 0 8px rgba(18,111,232,.1)}.city strong{display:block}.city span{color:var(--blue);font-size:11px;font-weight:900}.city small{display:block;color:var(--muted)}.route-photo{height:290px;margin-top:58px;border-radius:50px 15px 50px 15px;overflow:hidden}.route-photo img{width:100%;height:100%;object-fit:cover;filter:saturate(.65) hue-rotate(160deg);opacity:.86}
.stories{display:grid;grid-template-columns:1.3fr .7fr;gap:17px}.story{padding:32px;background:#fff;border:1px solid var(--line);border-radius:25px}.story:first-child{grid-row:1/3;display:flex;flex-direction:column;justify-content:center}.story blockquote{margin:22px 0;color:#405e7a;font-size:16px}.story:first-child blockquote{font-size:24px}.stars{color:#f0a73b;letter-spacing:3px}.story footer{display:flex;align-items:center;gap:12px;color:#8199af;font-size:11px}.story img{width:40px;height:40px;object-fit:cover;border-radius:50%}
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.plan{min-height:440px;padding:32px;display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:30px 30px 12px 30px}.plan.best{color:#fff;background:var(--blue);border-color:var(--blue);transform:translateY(-14px);box-shadow:0 25px 55px rgba(18,111,232,.22)}.plan small{color:var(--blue);font-weight:900}.best small{color:#bfeaff}.price{font-size:44px;font-weight:900}.price span{color:var(--muted);font-size:11px}.best .price span{color:#d4e9ff}.plan ul{padding:0;list-style:none;color:var(--muted);font-size:13px}.best ul{color:#dbeaff}.plan li{padding:6px 0}.plan li:before{content:"✓";margin-right:9px;color:#26b887}.best li:before{color:#fff}.plan .btn{width:100%;margin-top:auto}.best .btn{color:var(--blue);background:#fff}
.faq{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.qa{padding:26px;background:#fff;border:1px solid var(--line);border-radius:22px}.qa code{color:var(--blue);font-size:10px}.qa h3{margin:17px 0 8px}.qa p,.qa li{color:var(--muted);font-size:13px}
.page-hero{padding:105px 0 75px;background:linear-gradient(180deg,#fafdff,var(--sky))}.page-grid{display:grid;grid-template-columns:1fr 400px;align-items:center;gap:70px}.page-hero h1{font-size:clamp(45px,6vw,74px)}.page-art{height:390px;padding:20px;background:#fff;border:1px solid var(--line);border-radius:45px 45px 15px 45px;box-shadow:0 25px 60px rgba(42,120,179,.13)}.page-art img{width:100%;height:100%;object-fit:contain}.downloads{display:grid;gap:13px}.download{display:grid;grid-template-columns:75px 1fr 210px;align-items:center;gap:25px;padding:24px;background:#fff;border:1px solid var(--line);border-radius:18px}.os{width:55px;height:55px;display:grid;place-items:center;color:#fff;background:var(--blue);border-radius:50%;font-weight:900}.download h3{margin:0}.download p{margin:4px 0;color:var(--muted);font-size:11px}.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:13px}.step{padding:27px;background:#fff;border:1px solid var(--line);border-radius:20px}.step b{color:var(--blue);font-size:11px}.step h3{margin:38px 0 9px}.step p{color:var(--muted);font-size:12px}
.guide{display:grid;grid-template-columns:270px 1fr;gap:70px}.guide-nav{position:sticky;top:98px;height:max-content;padding:14px;background:#fff;border:1px solid var(--line);border-radius:20px}.guide-nav a{display:block;padding:11px 13px;color:#6f88a0;border-radius:10px;font-size:11px}.guide-nav a:hover{color:var(--blue);background:var(--sky)}.guide-body h2{margin:55px 0 13px;font-size:32px}.guide-body h2:first-child{margin-top:0}.guide-body p,.guide-body li{color:var(--muted)}.tip{padding:22px;background:#fff;border:1px solid var(--line);border-left:4px solid var(--blue);border-radius:12px}
.cta{margin-top:75px;padding:40px 45px;display:flex;align-items:center;justify-content:space-between;gap:30px;background:var(--sky);border:1px solid var(--line);border-radius:35px 35px 12px 35px}.cta h2{margin:0}.cta p{margin:4px 0;color:var(--muted)}.footer{padding:60px 0 23px;background:#ecf7fd;border-top:1px solid var(--line)}.footer-grid{display:grid;grid-template-columns:1.6fr repeat(3,1fr);gap:45px}.footer p{max-width:340px;color:#718ba4;font-size:11px}.footer h3{color:var(--blue);font-size:12px}.footer-links{display:grid;gap:8px;color:#6f879d;font-size:11px}.copy{display:flex;justify-content:space-between;margin-top:45px;padding-top:18px;border-top:1px solid var(--line);color:#8ba0b4;font-size:10px}
@media(max-width:930px){.links{position:absolute;top:74px;right:23px;left:23px;display:none;padding:18px;background:#fff;border:1px solid var(--line);border-radius:18px;flex-direction:column}.links.open{display:flex}.menu{display:block}.locale,.nav>.btn{display:none}.hero-grid,.page-grid,.feature-clouds{grid-template-columns:1fr}.sky-window{max-width:520px;width:100%;margin:auto}.head{max-width:none}.guide{grid-template-columns:1fr}.guide-nav{position:static}.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:620px){.wrap{width:calc(100% - 28px)}.hero{padding-top:65px}.hero h1{font-size:51px}.trust{display:grid;grid-template-columns:1fr}.trust span{text-align:center}.trust span+span{border-left:0;border-top:1px solid var(--line)}.section{padding:75px 0}.altitude,.cities,.plans,.faq,.steps,.stories{grid-template-columns:1fr}.route-line{display:none}.story:first-child{grid-row:auto}.plan.best{transform:none}.download{grid-template-columns:60px 1fr}.download .btn{grid-column:1/-1}.cta,.copy{align-items:flex-start;flex-direction:column}.footer-grid{grid-template-columns:1fr 1fr}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}