:root{--b:#1356d6;--d:#0a2fb0;--w:#fff;--k:#0b1020;--g:#f3f5fa}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Helvetica Neue",Arial,"Noto Sans CJK SC","PingFang SC","Microsoft YaHei",sans-serif;color:var(--k);background:var(--w);line-height:1.7;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit}
.hd{font-family:Oswald,"Bebas Neue","Arial Narrow","Noto Sans CJK SC",Impact,sans-serif;font-weight:900;font-stretch:condensed;text-transform:uppercase;letter-spacing:-.01em;line-height:.9}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px;position:relative}
header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid #e3e8f4}
header .wrap{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
header img{height:36px;width:auto}
nav{display:flex;gap:22px;font-size:13px;letter-spacing:.08em;text-transform:uppercase}
nav a{text-decoration:none}nav a:hover,nav a.on{color:var(--b)}
.lang{display:flex;gap:6px;font-size:12px}
.lang a{border:1px solid var(--b);color:var(--b);padding:2px 8px;text-decoration:none}
.lang a.on{background:var(--b);color:#fff}
.btn{display:inline-block;border:1px solid currentColor;padding:7px 16px;font-size:12px;letter-spacing:.14em;text-transform:uppercase;text-decoration:none;font-weight:700;transition:.2s}
.btn:hover{background:var(--b);color:#fff;border-color:var(--b)}
.btn.w{color:#fff}.btn.w:hover{background:#fff;color:var(--d)}
.side{position:absolute;writing-mode:vertical-rl;transform:rotate(180deg);font-size:11px;letter-spacing:.3em;text-transform:uppercase;color:var(--b)}
.duo{position:relative;background:#fff}
.duo img,.bw img{width:100%;height:auto}


/* hero */
.hero{position:relative;padding:70px 0 120px;overflow:hidden}
.hero .chev{position:absolute;right:-5%;top:300px;width:60%;height:360px;background:var(--b);clip-path:polygon(0 0,50% 40%,100% 0,100% 60%,50% 100%,0 60%)}
.hero .kick{font-size:13px;letter-spacing:.3em;color:var(--b);text-transform:uppercase;font-weight:700}
.hero h1{font-size:clamp(64px,13vw,190px);color:var(--b);margin:14px 0 0;position:relative;z-index:2}
.hero h1 small{display:block;font-size:.32em;color:var(--k);letter-spacing:.02em;margin-top:12px}
.hero .grid{display:grid;grid-template-columns:1.1fr 1fr;gap:40px;align-items:end;margin-top:30px;position:relative;z-index:2}
.hero .photo{box-shadow:24px 24px 0 var(--d)}
.price{display:flex;gap:30px;flex-wrap:wrap;margin:22px 0}
.price b{display:block;font-size:clamp(30px,4vw,44px);color:var(--b)}
.price span{font-size:12px;letter-spacing:.1em;text-transform:uppercase}
.hero .side{left:6px;top:80px}
/* diagonal blue */
.diag{background:var(--b);color:#fff;clip-path:polygon(0 12%,100% 0,100% 88%,0 100%);padding:150px 0;margin:-40px 0}
.diag .grid{display:grid;grid-template-columns:auto 1fr;gap:60px;align-items:start}
.diag .vt{color:#fff;white-space:nowrap;writing-mode:vertical-rl;transform:rotate(180deg);font-size:clamp(48px,7vw,96px)}
.diag p{max-width:560px;margin-bottom:16px;font-family:Georgia,"Noto Serif CJK SC",serif;font-size:16px}
.diag h3{font-size:28px;margin:10px 0 18px}
/* sections */
section.s{padding:100px 0;position:relative}
.eyebrow{font-size:12px;letter-spacing:.3em;color:var(--b);text-transform:uppercase;font-weight:700}
h2.hd{font-size:clamp(44px,8vw,110px);color:var(--b);margin:8px 0 30px}
.lead{font-size:20px;max-width:680px;color:#4a5370}.lead strong{color:var(--d)}
.cards{position:relative;height:620px;margin-top:40px}
.cards .c{position:absolute;width:34%;box-shadow:0 20px 40px rgba(10,47,176,.25)}
.cards .c1{left:0;top:40px}.cards .c2{left:30%;top:160px;z-index:2}.cards .c3{right:0;top:0;width:36%}
.cards .big{position:absolute;bottom:-30px;left:0;right:0;text-align:center;font-size:clamp(90px,18vw,260px);color:var(--b);opacity:.12;z-index:0}
.cards .c span{text-shadow:0 0 4px #000;position:absolute;right:8px;top:10px;writing-mode:vertical-rl;color:#fff;font-size:10px;letter-spacing:.25em;z-index:3}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--b);margin-top:30px}
.steps div{padding:26px 20px;border-right:1px solid #d5ddf2}
.steps b{font-size:56px;color:var(--b);display:block}
.steps h4{font-size:18px;margin:6px 0}
.cmp{display:grid;grid-template-columns:1fr 1fr;gap:0;margin-top:30px}
.cmp>div{padding:36px}
.cmp .a{background:var(--g)}.cmp .z{background:var(--d);color:#fff}
.cmp h3{font-size:34px;margin-bottom:14px}
.cmp li{list-style:none;padding:10px 0;border-bottom:1px solid rgba(128,140,180,.3)}
.cmp li::before{content:"— ";color:var(--b)}.cmp .z li::before{content:"✓ ";color:#9fc0ff}
.notice{background:var(--k);color:#fff;padding:90px 0}
.notice h2{color:#fff}.notice p{max-width:820px;margin-bottom:14px;color:#c9d2ea}
.tm{display:flex;gap:12px;flex-wrap:wrap;margin:20px 0}.tm span{border:1px solid #6d8ef0;padding:6px 14px;font-family:monospace;color:#fff}
.tgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.tgrid img{border:1px solid #e1e6f3}
.tgrid figure:nth-child(odd){transform:translateY(30px)}
.cta{background:var(--b);color:#fff;padding:100px 0;clip-path:polygon(0 0,50% 60px,100% 0,100% 100%,0 100%)}
.cta h2{color:#fff}
.info{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;margin-top:30px}
.info h4{font-size:12px;letter-spacing:.25em;text-transform:uppercase;color:#bcd0ff}
footer{background:var(--d);color:#c9d6ff;padding:40px 0;font-size:12px}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:16px}
.wa{position:fixed;right:18px;bottom:18px;z-index:60;background:var(--b);color:#fff;padding:12px 18px;text-decoration:none;font-weight:700;font-size:13px;letter-spacing:.1em;box-shadow:0 8px 24px rgba(10,47,176,.4)}
.two{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
.shadow{box-shadow:-22px 22px 0 var(--b)}
@media(max-width:860px){
 nav{display:none}
 .hero{padding:40px 0 80px}.hero .grid,.two,.cmp,.info{grid-template-columns:1fr}
 .hero .chev{width:100%;height:140px;top:auto;bottom:0;right:0}h2.hd{font-size:40px;word-break:break-word}
 .diag{padding:110px 0}.diag .grid{grid-template-columns:1fr;gap:20px}.diag .vt{color:#fff;white-space:nowrap;writing-mode:horizontal-tb;transform:none}
 .steps,.tgrid{grid-template-columns:1fr 1fr}
 .cards{height:auto;display:grid;grid-template-columns:1fr 1fr;gap:12px}
 .cards .c{position:relative;width:auto;left:auto!important;right:auto!important;top:auto!important}
 .cards .c3{grid-column:span 2}.cards .big{display:none}
 .side{display:none}section.s{padding:70px 0}
}
html[lang^=zh] .diag .vt{transform:none;letter-spacing:.05em}
html[lang^=zh] .side{transform:none}
.flow{padding:80px 0;position:relative}
.flow .side{left:8px;top:90px}
.flow .wrap{max-width:900px}
.flow.notice .fp{color:#c9d2ea}
.flow.diag{margin:0;clip-path:polygon(0 4%,100% 0,100% 96%,0 100%);padding:140px 0}
.flow.diag .side,.flow.promo .side,.flow.notice .side{color:#9fc0ff}
.flow.promo{background:var(--b);color:#fff;clip-path:polygon(0 0,50% 50px,100% 0,100% 100%,0 100%);padding:130px 0 90px}
.fh{font-size:clamp(34px,5.5vw,64px);color:var(--b);margin:40px 0 20px}
.notice .fh,.diag .fh{color:#fff}
.fbig{font-size:clamp(64px,12vw,150px);color:var(--b);margin:30px 0}
.diag .fbig,.notice .fbig{color:#fff}
.fp{font-size:17px;margin:0 0 16px;max-width:760px}
.fnote{font-size:13px;letter-spacing:.1em;color:var(--b);margin:20px 0}
.promo .fnote{color:#dfe8ff}
.fsmall{font-size:11px;color:#7a829c;margin-top:40px}
.fimg{margin:30px auto;max-width:760px;box-shadow:16px 16px 0 var(--b);background:#fff}
.diag .fimg,.promo .fimg,.notice .fimg{box-shadow:16px 16px 0 var(--d)}
.fimg img{width:100%;height:auto}
.fcta{margin:26px 0}
.fprice{font-size:clamp(26px,3.5vw,40px);color:var(--d);border-left:6px solid var(--b);padding-left:18px;margin:26px 0;line-height:1.2}
.fvid{margin:40px 0}
.fvid figcaption{font-size:clamp(22px,3vw,34px);color:var(--b);margin-bottom:12px;line-height:1.1}
.yt{display:block;position:relative;aspect-ratio:16/9;background:#000;box-shadow:16px 16px 0 var(--b)}
.yt img{width:100%;height:100%;object-fit:contain}
.yt span{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:76px;height:76px;border-radius:50%;background:var(--b);color:#fff;display:grid;place-items:center;font-size:28px}
.fvid iframe{width:100%;aspect-ratio:16/9;border:0;display:block}
.car{display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;padding:10px 0 20px}
.car img{flex:0 0 min(78%,340px);height:auto;scroll-snap-align:start;background:#fff}
@media(max-width:860px){.flow .side{display:none}.fimg,.yt{box-shadow:8px 8px 0 var(--b)}}
/* mobile overflow fixes */
.hd,h1,h2,h3{overflow-wrap:anywhere;word-break:normal;hyphens:none}
.hero h1{font-size:clamp(34px,11.5vw,190px)}
.fbig{font-size:clamp(38px,12vw,150px)}
.fh{font-size:clamp(26px,7.5vw,64px)}
.price b{font-size:clamp(24px,7vw,44px)}
.fprice{font-size:clamp(20px,5.5vw,40px)}
.cmp h3{font-size:clamp(22px,6.5vw,34px)}
@media(max-width:860px){h2.hd{font-size:clamp(26px,9vw,40px)}.diag .vt{font-size:clamp(30px,10vw,96px)}.hero h1 small{font-size:clamp(16px,5vw,30px)}}
main,body{max-width:100%}
html[lang^=en] .hero h1{font-size:clamp(26px,8.8vw,150px)}