:root{--bg:#07080b;--panel:#11141b;--line:#232836;--red:#e31937;--chrome:#c9ced8;--txt:#eef0f4;--mute:#8b93a5}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--txt);font:16px/1.6 -apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;overflow-x:hidden}
#stars{position:fixed;inset:0;z-index:-1}
a{color:inherit;text-decoration:none}
code{font-family:ui-monospace,Consolas,monospace;color:var(--chrome)}
.nav{position:sticky;top:0;z-index:10;display:flex;justify-content:space-between;align-items:center;padding:14px 5vw;background:rgba(7,8,11,.75);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.brand{font-weight:800;letter-spacing:.12em;display:flex;align-items:center;gap:10px}
.logo{width:34px;height:34px;border-radius:50%;box-shadow:0 0 14px rgba(227,25,55,.5)}
.nav nav{display:flex;gap:22px;font-size:14px;color:var(--mute)}
.nav nav a:hover,.nav nav a:focus-visible{color:var(--txt)}
.nav .x{border:1px solid var(--line);padding:2px 10px;border-radius:6px}
section{padding:90px 5vw;max-width:1200px;margin:0 auto}
h1{font-size:clamp(34px,5.4vw,72px);line-height:1.1;letter-spacing:-.02em}
h1 span{white-space:nowrap}
h1 em{font-style:normal;color:var(--red)}
h2{font-size:clamp(28px,4vw,44px);margin-bottom:28px}
.tag{font-size:12px;letter-spacing:.2em;color:var(--mute);margin-bottom:18px}
.lead{font-size:19px;color:var(--chrome);max-width:520px;margin:24px 0 32px}
.hero{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;min-height:86vh}
.cta{display:flex;gap:14px;flex-wrap:wrap}
.btn{padding:14px 28px;border-radius:10px;font-weight:700;font-size:16px;cursor:pointer;border:1px solid var(--line);background:none;color:var(--txt)}
.btn.red{background:var(--red);border-color:var(--red)}
.btn:hover,.btn:focus-visible{transform:translateY(-2px);outline:2px solid var(--chrome);outline-offset:2px}
.ca{margin-top:18px;font-size:14px;color:var(--mute)}
.hero-stage{position:relative;height:520px}
.mars{position:absolute;top:10px;right:20px;width:110px;height:110px;border-radius:50%;background:radial-gradient(circle at 35% 35%,#ff8a5c,#b83a1e 60%,#5a160b);box-shadow:0 0 60px rgba(255,90,40,.35)}
.tower{position:absolute;bottom:0;left:50%;transform:translateX(-120px);width:40px;height:420px;border:3px solid var(--chrome);border-bottom:0;background:repeating-linear-gradient(45deg,transparent 0 16px,rgba(201,206,216,.35) 16px 18px)}
.tower span{position:absolute;left:100%;height:3px;width:70px;background:var(--chrome)}
.tower span:nth-child(1){top:90px}.tower span:nth-child(2){top:200px}.tower span:nth-child(3){top:310px}
.hero-stage .car{position:absolute;bottom:40px;left:50%;width:120px;transform:translateX(10px);animation:hover 3s ease-in-out infinite;filter:drop-shadow(0 0 30px rgba(227,25,55,.45))}
@keyframes hover{0%,100%{transform:translateX(10px)}50%{transform:translate(10px,-14px)}}
.flame{animation:flick .15s infinite alternate;transform-origin:60px 196px}
@keyframes flick{to{transform:scaleY(1.35);opacity:.8}}
.console{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.step,.launch-view,.receipt{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:22px}
.step h3{font-size:17px;margin-bottom:16px;display:flex;gap:10px;align-items:center}
.step h3 b{color:var(--red);font-family:ui-monospace,Consolas,monospace}
#fuelVal{margin-left:auto;font-family:ui-monospace,Consolas,monospace;color:var(--chrome)}
.models{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.models button{padding:10px 6px;border-radius:8px;border:1px solid var(--line);background:#0b0d12;color:var(--txt);cursor:pointer;font-size:14px}
.models button small{display:block;color:var(--mute);font-size:11px}
.models button[aria-checked=true]{border-color:var(--red);background:rgba(227,25,55,.12)}
input[type=range]{width:100%;accent-color:var(--red)}
.battery{margin-top:14px;height:26px;border:2px solid var(--chrome);border-radius:6px;padding:3px;position:relative}
.battery::after{content:"";position:absolute;right:-8px;top:6px;width:5px;height:10px;background:var(--chrome);border-radius:0 2px 2px 0}
.battery i{display:block;height:100%;width:60%;background:linear-gradient(90deg,#2fd27a,#9cff6a);border-radius:2px;transition:width .2s}
.hint{font-size:13px;color:var(--mute);margin-top:10px}
.ignite{width:100%;padding:22px;font-size:22px;font-weight:900;letter-spacing:.2em;border-radius:12px;border:0;background:radial-gradient(circle,#ff3b55,#a00d22);color:#fff;cursor:pointer;box-shadow:0 0 30px rgba(227,25,55,.5)}
.ignite:disabled{opacity:.5;cursor:wait}
.ignite:focus-visible{outline:3px solid var(--chrome)}
.count{font:700 32px ui-monospace,Consolas,monospace;text-align:center;margin-top:12px}
.launch-view{grid-column:1/-1}
.sky{position:relative;height:280px;border-radius:12px;overflow:hidden;background:linear-gradient(#020306,#0d1530 60%,#1c2a55)}
.sky.go{animation:sky 3s forwards}
@keyframes sky{to{background-position:0 -400px;filter:hue-rotate(-25deg)}}
.ground{position:absolute;bottom:0;left:0;right:0;height:26px;background:#1a1d24;border-top:2px solid var(--chrome)}
.fly{position:absolute;left:50%;bottom:26px;width:56px;transform:translateX(-50%);transition:bottom 3s cubic-bezier(.5,0,.8,.4)}
.alt{position:absolute;top:12px;left:14px;font:600 14px ui-monospace,Consolas,monospace;color:var(--chrome)}
.result{margin-top:14px;font-size:17px;text-align:center}
.reserve{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.reserve p{color:var(--chrome)}
.receipt{font-family:ui-monospace,Consolas,monospace;background:#f2efe8;color:#141414;border:0;transform:rotate(-1.5deg);box-shadow:0 20px 60px rgba(0,0,0,.5)}
.receipt h3{font-size:15px;border-bottom:2px dashed #999;padding-bottom:10px;margin-bottom:12px}
.receipt label{display:flex;justify-content:space-between;align-items:center;font-size:14px;margin-bottom:12px}
.receipt input{width:110px;padding:6px;font:inherit;border:1px solid #999;border-radius:4px}
.receipt ol{list-style:none}
.receipt li{display:flex;justify-content:space-between;padding:8px 0;border-bottom:1px dashed #bbb;font-size:14px}
.receipt li:last-child{color:#c0102a;font-weight:700}
.receipt .hint{color:#666}
.wheel{position:relative;width:min(460px,90vw);aspect-ratio:1;margin:0 auto;border:2px dashed var(--line);border-radius:50%;animation:spin 30s linear infinite}
.wheel span{position:absolute;left:50%;top:50%;width:120px;margin:-22px -60px;padding:10px;text-align:center;font-size:14px;font-weight:700;background:var(--panel);border:1px solid var(--red);border-radius:10px;animation:spin 30s linear infinite reverse}
.wheel span:nth-child(1){transform:rotate(0deg) translateY(-190px) rotate(0deg)}
@keyframes spin{to{rotate:360deg}}
.center{text-align:center;color:var(--chrome);margin-top:28px}
.token dl{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.token dl div{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:20px}
.token dt{font-size:13px;color:var(--mute)}
.token dd{font-size:22px;font-weight:800;margin-top:6px}
footer{text-align:center;padding:40px 5vw;color:var(--mute);font-size:13px;border-top:1px solid var(--line)}
@media (max-width:860px){.hero,.reserve{grid-template-columns:1fr}.hero-stage{height:380px}.tower{height:300px}.console{grid-template-columns:1fr}.token dl{grid-template-columns:1fr 1fr}.nav nav a:not(.x){display:none}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}