:root{--ink:#15182a;--deep:#0d0f24;--violet:#6857e5;--cyan:#52e5e0;--pink:#e074c6;--paper:#f4f5fa;--white:#fff;--muted:#70758b;--line:#dcdfea;--max:1180px;--nav:70px}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;color:var(--ink);background:var(--paper);font-family:"Microsoft YaHei UI","Microsoft YaHei",Arial,sans-serif;line-height:1.7}a{color:inherit;text-decoration:none}img{max-width:100%}.wrap{width:min(var(--max),calc(100% - 40px));margin:auto}.skip{position:fixed;top:-60px;left:10px;z-index:99;padding:9px 14px;background:white}.skip:focus{top:9px}
.nav{position:fixed;inset:0 0 auto;z-index:30;height:var(--nav);color:white;background:rgba(13,15,36,.95);border-bottom:1px solid #353657;backdrop-filter:blur(13px)}.navrow{height:100%;display:flex;align-items:center;justify-content:space-between;gap:25px}.logo{display:flex;align-items:center;gap:10px;font-weight:900}.mark{display:grid;place-items:center;width:38px;height:38px;border:1px solid var(--cyan);border-radius:50%;color:var(--cyan);font-family:Georgia,serif;font-size:22px}.logo small{display:block;color:#747b9c;font:8px Consolas,monospace;letter-spacing:.15em}.links{display:flex;align-items:center;gap:clamp(16px,2vw,29px);font-size:14px}.links a:not(.btn):hover,.links a[aria-current=page]{color:var(--cyan)}.toggle{display:none;width:42px;height:42px;border:1px solid #4a4d72;color:white;background:transparent;font-size:20px}
.btn{display:inline-flex;align-items:center;justify-content:center;min-width:128px;min-height:45px;padding:10px 19px;border:1px solid var(--cyan);border-radius:6px;color:var(--deep);background:var(--cyan);font-weight:800;white-space:nowrap;word-break:keep-all;writing-mode:horizontal-tb;transition:transform .2s,box-shadow .2s}.btn:hover{transform:translateY(-2px);box-shadow:0 0 22px #52e5e066}.btn.alt{color:white;background:transparent}.btn.small{min-width:104px;min-height:38px;padding:7px 13px;font-size:12px}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--pink);outline-offset:3px}
.hero{position:relative;overflow:hidden;padding:calc(var(--nav) + 72px) 0 86px;color:white;background:var(--deep)}.beam{position:absolute;left:-15%;width:130%;height:1px;background:linear-gradient(90deg,transparent,var(--violet),var(--cyan),transparent);opacity:.55;animation:travel 6s linear infinite}.beam.b1{top:25%;animation-delay:-1s}.beam.b2{top:55%;animation-delay:-3s}.beam.b3{top:80%;animation-delay:-5s}@keyframes travel{0%{transform:translateX(-30%)}100%{transform:translateX(30%)}}.hero-grid{position:relative;display:grid;grid-template-columns:.9fr 1.1fr;align-items:center;gap:66px}.signal{display:inline-flex;align-items:center;gap:8px;margin-bottom:19px;padding:6px 9px;border:1px solid #464a74;color:var(--cyan);font:11px Consolas,monospace}.signal i{width:8px;height:8px;border-radius:50%;background:var(--cyan);box-shadow:0 0 14px var(--cyan)}h1,h2,h3{margin-top:0;line-height:1.12;text-wrap:balance}h1{margin-bottom:23px;font-size:clamp(44px,5.9vw,76px);letter-spacing:-.05em}.hero-copy>p{max-width:590px;margin:0 0 30px;color:#afb2c9;font-size:17px}.actions{display:flex;flex-wrap:wrap;gap:10px}.sync-state{display:flex;flex-wrap:wrap;gap:20px;margin-top:29px;color:#8c91ac;font-size:11px}.sync-state b{color:white}.hero-media{position:relative;align-self:center;height:auto;padding:0;margin:0;border:1px solid #52567e}.route{position:absolute;left:4%;right:4%;bottom:-19px;display:flex;align-items:center;justify-content:space-between;padding:12px 15px;color:#aeb5ce;background:#171a39;border:1px solid #43476f;font:10px Consolas,monospace}.route b{color:var(--cyan)}.route-line{position:relative;flex:1;height:2px;margin:0 12px;background:#3d4265}.route-line::after{content:"";position:absolute;top:-2px;width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan);animation:node 2.8s linear infinite}@keyframes node{from{left:0}to{left:100%}}
.strip{color:white;background:#252849}.strip-row{display:grid;grid-template-columns:repeat(4,1fr)}.strip span{padding:13px 15px;border-right:1px solid #424667;text-align:center;font:10px Consolas,monospace}.strip span:last-child{border:0}.strip b{color:var(--cyan)}
.section{padding:clamp(76px,8vw,108px) 0}.white{background:white}.head{display:grid;grid-template-columns:1fr .7fr;align-items:end;gap:48px;margin-bottom:43px}.head h2{margin:0;font-size:clamp(34px,4.2vw,52px);letter-spacing:-.04em}.head p{margin:0;color:var(--muted)}.overline{display:block;margin-bottom:10px;color:var(--violet);font:11px Consolas,monospace;letter-spacing:.1em}
.modules{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.module{min-height:225px;padding:27px;border:1px solid var(--line);background:white}.module:nth-child(2),.module:nth-child(6){background:#eceaff}.module-code{display:flex;justify-content:space-between;margin-bottom:40px;color:#9297aa;font:10px Consolas,monospace}.module-code b{display:grid;place-items:center;width:42px;height:42px;color:white;background:var(--violet)}.module h3{margin-bottom:7px}.module p{margin:0;color:var(--muted);font-size:13px}
.timeline{display:grid;grid-template-columns:repeat(4,1fr);border-block:1px solid #454966;background:var(--deep);color:white}.phase{position:relative;padding:30px 24px;border-right:1px solid #454966}.phase:last-child{border:0}.phase::before{content:"";position:absolute;top:-5px;left:24px;width:9px;height:9px;border-radius:50%;background:var(--cyan);box-shadow:0 0 13px var(--cyan)}.phase span{color:var(--cyan);font:10px Consolas,monospace}.phase h3{margin:26px 0 7px}.phase p{color:#9ca2bc;font-size:12px}
.platforms{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.platform{padding:26px 22px;border-radius:16px;background:white}.platform-icon{font-size:25px}.platform h3{margin:28px 0 7px}.platform p{min-height:43px;color:var(--muted);font-size:12px}
.scenes{display:grid;grid-template-columns:1.2fr .9fr .9fr;gap:10px}.scene{border:1px solid var(--line);background:white}.scene img{display:block;width:100%;height:210px;object-fit:cover}.scene-body{padding:25px}.scene span{color:var(--violet);font:10px Consolas,monospace}.scene h3{margin:10px 0 7px}.scene p{color:var(--muted);font-size:13px}
.reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.review{padding:27px;border:1px solid var(--line);background:white}.review blockquote{margin:0 0 24px;color:#4e5368}.person{display:flex;align-items:center;gap:11px;padding-top:15px;border-top:1px solid var(--line)}.avatar{display:grid;place-items:center;width:42px;height:42px;border-radius:50%;color:white;background:var(--violet)}.person strong,.person small{display:block}.person small{color:var(--muted)}
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;align-items:center}.plan{padding:30px;border:1px solid var(--line);background:white}.plan.featured{padding-block:46px;color:white;background:var(--deep);border-top:4px solid var(--cyan)}.tag{color:var(--violet);font:10px Consolas,monospace}.featured .tag{color:var(--cyan)}.price{color:var(--muted)}.price b{color:var(--ink);font-size:28px}.featured .price,.featured li{color:#9ca2bc}.featured .price b{color:white}.plan ul{list-style:none;padding:0;margin:22px 0}.plan li{margin:8px 0;color:var(--muted);font-size:13px}.plan li::before{content:"✓";margin-right:8px;color:var(--cyan)}
.faq{max-width:900px;margin:auto;border-top:1px solid var(--ink)}.faq details{border-bottom:1px solid var(--line);background:white}.faq summary{position:relative;padding:21px 50px 21px 5px;list-style:none;cursor:pointer;font-weight:800}.faq summary::-webkit-details-marker{display:none}.faq summary::after{content:"＋";position:absolute;right:7px;top:15px;color:var(--violet);font-size:24px}.faq details[open] summary::after{content:"－"}.answer{padding:0 50px 21px 5px;color:var(--muted)}
.pagehero{padding:calc(var(--nav) + 65px) 0 70px;color:white;background:var(--deep);border-bottom:3px solid var(--cyan)}.pagegrid{display:grid;grid-template-columns:1fr .84fr;align-items:center;gap:58px}.pagehero p{color:#afb2c9}.pageimg{border:1px solid #52567e}.downloads{display:grid;grid-template-columns:1fr 1fr;gap:10px}.download{display:grid;grid-template-columns:65px 1fr;gap:19px;padding:27px;border:1px solid var(--line);background:white}.download h2{margin-bottom:5px;font-size:21px}.download p{margin:0 0 14px;color:var(--muted);font-size:12px}.chips{display:flex;flex-wrap:wrap;gap:5px;margin-bottom:15px}.chips span{padding:3px 7px;background:#eceaff;color:var(--violet);font:9px Consolas,monospace}.notice{margin-top:18px;padding:17px 20px;border-left:4px solid var(--pink);background:#fceef9}
.help-layout{display:grid;grid-template-columns:240px 1fr;gap:44px;align-items:start}.helpnav{position:sticky;top:92px;border:1px solid var(--line);border-top:4px solid var(--violet);background:white}.helpnav a{display:block;padding:10px 13px;border-bottom:1px solid var(--line);font-size:13px}.helpnav a:hover{background:#efedff}.helpmain section{margin-bottom:58px}.helpmain h2{font-size:29px}.steps{display:grid;gap:8px;counter-reset:s}.step{position:relative;padding:18px 18px 18px 66px;border:1px solid var(--line);background:white}.step::before{counter-increment:s;content:counter(s);position:absolute;left:17px;top:17px;display:grid;place-items:center;width:31px;height:31px;border-radius:50%;color:white;background:var(--violet);font:12px Consolas,monospace}
.footer{padding:58px 0 22px;color:white;background:#090b1d;border-top:4px solid var(--cyan)}.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:38px;padding-bottom:38px}.footer-intro p{max-width:320px;color:#8f94ad;font-size:12px}.footer h3{color:var(--cyan);font-size:13px}.footer ul{list-style:none;padding:0;margin:0}.footer li{margin:8px 0}.footer a{color:#8f94ad;font-size:12px}.copyright{display:flex;justify-content:space-between;gap:20px;padding-top:20px;border-top:1px solid #363950;color:#696e89;font-size:11px}
@media(max-width:930px){.toggle{display:block}.links{position:fixed;top:var(--nav);left:0;right:0;display:none;flex-direction:column;align-items:stretch;padding:20px;background:var(--deep)}.links.open{display:flex}.hero-grid,.pagegrid{grid-template-columns:1fr}.modules{grid-template-columns:1fr 1fr}.timeline,.platforms{grid-template-columns:1fr 1fr}.scenes,.reviews,.plans{grid-template-columns:1fr}.plan.featured{order:-1}.footer-grid{grid-template-columns:1fr 1fr}.footer-intro{grid-column:1/-1}}
@media(max-width:650px){.head{grid-template-columns:1fr}.modules,.timeline,.platforms,.downloads{display:flex;flex-direction:column}.phase{border-right:0;border-bottom:1px solid #454966}.strip-row{grid-template-columns:1fr 1fr}.help-layout{grid-template-columns:1fr}.helpnav{position:static;display:flex;overflow-x:auto}.helpnav a{white-space:nowrap;border-right:1px solid var(--line)}.footer-grid{grid-template-columns:1fr 1fr}.copyright{flex-direction:column}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.beam,.route-line::after{display:none}*,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}}
/* Hero 图片最终覆盖：居中、自然高度、无裁切与变形 */
.hero-grid{align-items:center}.hero-media{align-self:center;height:auto;padding:0;margin:0;overflow:visible;transform:none}.hero-media img{display:block;width:100%;height:auto;object-fit:contain;object-position:center;min-height:0;max-height:none;margin:0;padding:0;clip-path:none;transform:none}