:root{--bg:#f1f5ff;--surface:#ffffff;--ink:#101d3e;--muted:#63708f;--accent:#315efb;--accent2:#60d7b8;--dark:#111d42;--soft:#dfe9ff;--radius:18px;--display:Inter, "Noto Sans SC", sans-serif;--max:1180px;--line:color-mix(in srgb,var(--ink) 17%,transparent);--shadow:0 26px 70px color-mix(in srgb,var(--ink) 14%,transparent)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--bg);font:16px/1.65 Inter,"Noto Sans SC","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{font:inherit}.wrap{width:min(calc(100% - 40px),var(--max));margin-inline:auto}.skip{position:fixed;left:16px;top:-60px;z-index:99;padding:10px 16px;color:#fff;background:var(--ink)}.skip:focus{top:16px}.header{position:sticky;top:0;z-index:30;background:color-mix(in srgb,var(--bg) 86%,transparent);backdrop-filter:blur(18px);border-bottom:1px solid transparent}.header.scrolled{border-color:var(--line)}.nav{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:10px;font-weight:850;font-size:1.12rem}.brand-mark{width:36px;height:36px;display:grid;place-items:center;color:var(--surface);background:var(--ink);border-radius:18deg}.nav-links{display:flex;gap:28px;color:var(--muted);font-size:.92rem}.nav-links a:hover{color:var(--accent)}.nav-cta,.button{min-height:46px;display:inline-flex;align-items:center;justify-content:center;padding:0 20px;border:1px solid var(--ink);border-radius:999px;font-weight:800;cursor:pointer;background:transparent}.nav-cta:hover,.button:hover{transform:translateY(-2px)}.menu{display:none;width:44px;height:44px;border:1px solid var(--line);background:transparent;border-radius:50%}.menu span{display:block;width:18px;height:1px;margin:5px auto;background:currentColor}.primary{color:var(--surface);background:var(--ink)}.accent{color:#fff;border-color:var(--accent);background:var(--accent)}.ghost{background:transparent}.inverse{color:#fff;border-color:rgba(255,255,255,.72)}.hero{padding:78px 0 96px;overflow:hidden}.hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:72px;align-items:center}.eyebrow,.kicker{margin:0 0 18px;color:var(--accent);font-size:.76rem;font-weight:900;letter-spacing:.16em;text-transform:uppercase}.eyebrow:before{content:"";display:inline-block;width:34px;height:2px;margin:0 10px 3px 0;background:currentColor}h1,h2,h3,p{margin-top:0}h1,h2{font-family:var(--display);font-weight:800;letter-spacing:-.055em}h1{margin-bottom:24px;font-size:clamp(3.3rem,6.7vw,6.3rem);line-height:.98}h1 em{color:var(--accent);font-style:normal}.lead{max-width:620px;margin-bottom:30px;color:var(--muted);font-size:1.1rem}.actions{display:flex;gap:12px;flex-wrap:wrap}.micro{margin:14px 0 0;color:var(--muted);font-size:.84rem}.hero-art{position:relative;min-height:520px}.art-orbit{position:absolute;inset:5% 0 auto 12%;width:390px;height:390px;border-radius:50%;background:var(--accent2);transform:rotate(-8deg)}.app-card{position:absolute;inset:55px 10px 10px 45px;padding:24px;border:1px solid color-mix(in srgb,var(--surface) 75%,transparent);border-radius:calc(var(--radius) + 6px);background:color-mix(in srgb,var(--surface) 88%,transparent);box-shadow:var(--shadow);backdrop-filter:blur(20px);transform:rotate(2deg)}.app-top,.app-bottom{display:flex;justify-content:space-between;gap:20px;font-size:.78rem}.app-top{padding-bottom:18px;border-bottom:1px solid var(--line)}.app-top span,.app-bottom{color:var(--muted)}.text-pane{margin-top:14px;padding:20px;border:1px solid var(--line);border-radius:calc(var(--radius) - 6px)}.text-pane small{color:var(--muted)}.text-pane p{margin:14px 0 0;font-family:var(--display);font-size:1.15rem}.target{color:#fff;background:var(--dark)}.target small{color:color-mix(in srgb,#fff 70%,transparent)}.app-bottom{padding-top:16px}.art-tag{position:absolute;right:-8px;top:26px;display:flex;align-items:center;gap:10px;padding:12px 16px;background:var(--surface);border-radius:14px;box-shadow:var(--shadow);font-weight:800;font-size:.84rem}.icon{width:44px;height:44px;display:grid;place-items:center;border-radius:13px;color:var(--accent);background:var(--soft);font-size:1.05rem}.proof{border-block:1px solid var(--line)}.proof-row{min-height:88px;display:grid;grid-template-columns:1.4fr repeat(3,1fr);align-items:center;gap:20px}.proof-row span{color:var(--muted)}.proof-row b{text-align:center}.section{padding:110px 0}.callout{padding:56px;display:grid;grid-template-columns:1.2fr .8fr;align-items:center;gap:50px;color:#fff;background:var(--dark);border-radius:calc(var(--radius) + 8px)}.callout h2{margin:0;font-size:clamp(2.7rem,5vw,4.5rem);line-height:1.05}.callout p{max-width:580px;color:color-mix(in srgb,#fff 72%,transparent)}.callout>div:last-child{display:flex;align-items:flex-start;flex-direction:column;gap:12px}.callout small{opacity:.7}.section-head{display:grid;grid-template-columns:.7fr 1.3fr;gap:60px;align-items:end;margin-bottom:52px}.section-head h2,.guide h2,.faq-layout h2,.advanced h2,.change-grid h2,.contact h2{margin:0;font-size:clamp(2.4rem,4.7vw,4.2rem);line-height:1.05}.section-head p{max-width:600px;margin:16px 0 0;color:var(--muted)}.cards{display:grid;grid-template-columns:1.12fr .88fr;gap:18px}.feature{position:relative;min-height:250px;padding:30px;border:1px solid var(--line);background:color-mix(in srgb,var(--surface) 78%,transparent);border-radius:var(--radius)}.featured{grid-row:span 2;min-height:518px;background:var(--soft)}.feature .num{position:absolute;right:26px;top:28px;font-family:var(--display);font-size:2.2rem;color:color-mix(in srgb,var(--ink) 38%,transparent)}.feature h3{margin:46px 0 8px;font-size:1.2rem}.feature p{color:var(--muted)}.demo{margin-top:50px;padding:22px;background:var(--surface);border:1px solid var(--line);border-radius:calc(var(--radius) - 6px)}.demo mark{background:var(--accent2)}.demo p{margin:18px 0 0;padding:14px;color:#fff;background:var(--dark);border-radius:10px}.traits{background:color-mix(in srgb,var(--soft) 58%,var(--bg))}.trait-grid{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line)}.trait-grid>div{padding:28px;border-left:1px solid var(--line)}.trait-grid>div:first-child{border:0}.trait-grid p{margin:9px 0 0;color:var(--muted)}.guide{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px}.guide-title>p:last-child{color:var(--muted)}.steps{margin:0;padding:0;list-style:none;counter-reset:step}.steps li{counter-increment:step;display:grid;grid-template-columns:54px 1fr;gap:18px;padding:23px 0;border-bottom:1px solid var(--line)}.steps li:before{content:"0" counter(step);width:46px;height:46px;display:grid;place-items:center;color:var(--accent);background:var(--soft);border-radius:50%;font-weight:900}.steps h3{margin:0 0 4px}.steps p{margin:0;color:var(--muted)}.highlight .wrap{padding:68px;color:#fff;background:var(--accent);border-radius:calc(var(--radius) + 8px)}.highlight blockquote{max-width:900px;margin:0;font:500 clamp(2.1rem,4vw,3.8rem)/1.18 var(--display);letter-spacing:-.04em}.highlight cite{display:block;margin-top:30px;font-style:normal;font-weight:800;opacity:.8}.advanced{display:grid;grid-template-columns:1fr 1fr;gap:70px;padding:60px;border:1px solid var(--line);background:var(--surface);border-radius:var(--radius)}.advanced-list article{padding:22px 0;border-bottom:1px solid var(--line)}.advanced-list b,.advanced-list span{display:block}.advanced-list span{margin-top:5px;color:var(--muted)}.faq-layout{display:grid;grid-template-columns:.72fr 1.28fr;gap:70px}.faq-list{border-top:1px solid var(--line)}.faq-list article{border-bottom:1px solid var(--line)}.faq-list button{width:100%;display:flex;justify-content:space-between;padding:24px 0;border:0;color:var(--ink);background:transparent;text-align:left;font-weight:800;cursor:pointer}.faq-list button:after{content:"+";color:var(--accent);font-size:1.5rem}.faq-list button[aria-expanded=true]:after{transform:rotate(45deg)}.faq-list article>p{display:none;max-width:720px;padding:0 0 24px;margin:0;color:var(--muted)}.faq-list button[aria-expanded=true]+p{display:block}.about{display:grid;grid-template-columns:1.2fr .8fr;gap:20px}.about article,.about aside{min-height:340px;padding:40px;border-radius:var(--radius)}.about article{background:var(--soft)}.about aside{display:grid;align-content:center;color:#fff;background:var(--dark)}.about aside strong{font:700 3.6rem/1 var(--display)}.about aside span{margin:8px 0 28px;color:color-mix(in srgb,#fff 70%,transparent)}.change-grid{display:grid;grid-template-columns:1fr .8fr;gap:60px}.release{display:grid;grid-template-columns:120px 1fr;gap:20px;padding:23px 0;border-bottom:1px solid var(--line)}.release time{color:var(--muted);font-size:.85rem}.release p{margin:4px 0 0;color:var(--muted)}.verify{padding:36px;border:1px solid var(--line);background:var(--surface);border-radius:var(--radius)}.verify h3{margin:26px 0 8px}.verify p,.verify li{color:var(--muted)}.verify ul{padding-left:19px}.reviews{display:grid;grid-template-columns:1.2fr .9fr .9fr;gap:18px}.reviews figure{min-height:270px;display:flex;flex-direction:column;justify-content:space-between;margin:0;padding:30px;border:1px solid var(--line);background:var(--surface);border-radius:var(--radius)}.reviews blockquote{margin:0;font:500 1.3rem/1.55 var(--display)}.reviews figure:first-child blockquote{font-size:1.8rem}.reviews figcaption{margin-top:28px;color:var(--muted)}.contact{padding:56px;display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center;color:#fff;background:var(--dark);border-radius:var(--radius)}.contact p{color:color-mix(in srgb,#fff 70%,transparent)}.contact>div:last-child{display:flex;align-items:flex-end;flex-direction:column;gap:16px}.contact-email{font-weight:800}.footer{padding:42px 0;border-top:1px solid var(--line)}.footer-row{display:flex;justify-content:space-between;align-items:center;gap:20px}.footer nav{display:flex;gap:20px;color:var(--muted);font-size:.86rem}.footer small{color:var(--muted)}
.download-hero{padding:70px 0 88px}.download-hero-grid{position:relative;overflow:hidden;padding:64px;display:grid;grid-template-columns:1.08fr .92fr;gap:54px;align-items:center;color:#fff;background:var(--dark);border-radius:calc(var(--radius) + 10px)}.download-hero-grid:after{content:"";position:absolute;width:420px;height:420px;right:-170px;top:-190px;border:1px solid rgba(255,255,255,.2);border-radius:50%;box-shadow:0 0 0 70px rgba(255,255,255,.025),0 0 0 140px rgba(255,255,255,.02)}.download-hero h1{font-size:clamp(3.1rem,6vw,5.5rem)}.download-hero .lead{color:rgba(255,255,255,.7)}.detect{position:relative;z-index:2;padding:30px;color:var(--ink);background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow)}.detect small,.detect strong,.detect span{display:block}.detect small,.detect span{color:var(--muted)}.detect strong{margin:16px 0 4px;font:700 2rem/1.2 var(--display)}.detect .button{width:100%;margin-top:24px}.tabs{display:flex;gap:10px;margin-bottom:28px}.tabs button{padding:10px 18px;border:1px solid var(--line);border-radius:999px;color:var(--muted);background:transparent;cursor:pointer}.tabs button[aria-selected=true]{color:#fff;border-color:var(--ink);background:var(--ink)}.version-grid{display:none;grid-template-columns:repeat(3,1fr);gap:18px}.version-grid.active{display:grid}.version{position:relative;padding:28px;border:1px solid var(--line);background:var(--surface);border-radius:var(--radius)}.version.recommended{border-color:var(--accent)}.version>span{position:absolute;right:22px;top:22px;padding:4px 9px;color:var(--accent);background:var(--soft);border-radius:999px;font-size:.72rem;font-weight:900}.version p{color:var(--muted)}.version .button{width:100%}.install{display:grid;grid-template-columns:repeat(3,1fr);margin:0;padding:0;list-style:none;counter-reset:install;border:1px solid var(--line);background:var(--surface);border-radius:var(--radius);overflow:hidden}.install li{counter-increment:install;padding:34px;border-left:1px solid var(--line)}.install li:first-child{border:0}.install li:before{content:"0" counter(install);display:block;margin-bottom:55px;color:var(--accent);font:700 2.7rem/1 var(--display)}.install p{margin:7px 0 0;color:var(--muted)}.security{display:grid;grid-template-columns:1fr 1fr;gap:20px}.requirements{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.requirements p{display:flex;justify-content:space-between;gap:20px;margin:0;padding:20px;border-bottom:1px solid var(--line);background:var(--surface)}.requirements p:last-child{border:0}.requirements span{color:var(--muted);text-align:right}.support{display:grid;grid-template-columns:1fr 1fr;gap:20px}.support article{min-height:270px;padding:32px;border:1px solid var(--line);background:var(--surface);border-radius:var(--radius)}.support h3{margin:38px 0 8px}.support p{color:var(--muted)}.support a,.support .contact-email{color:var(--accent);font-weight:850}.dialog{width:min(calc(100% - 32px),520px);padding:0;border:0;border-radius:var(--radius);color:var(--ink);background:var(--surface);box-shadow:var(--shadow)}.dialog::backdrop{background:rgba(10,12,14,.58);backdrop-filter:blur(5px)}.dialog>div{position:relative;padding:36px}.dialog h2{font-size:2.2rem}.dialog p{color:var(--muted)}.dialog-x{position:absolute;right:20px;top:20px;width:38px;height:38px;border:1px solid var(--line);border-radius:50%;background:transparent;cursor:pointer}
@media(max-width:860px){.nav-links{position:fixed;inset:77px 16px auto;display:none;flex-direction:column;padding:20px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.nav-links.open{display:flex}.nav-cta{display:none}.menu{display:block}.hero-grid,.section-head,.callout,.guide,.advanced,.faq-layout,.about,.change-grid,.contact,.download-hero-grid,.security{grid-template-columns:1fr;gap:34px}.cards{grid-template-columns:1fr}.featured{grid-row:auto}.trait-grid,.reviews,.version-grid.active,.install{grid-template-columns:1fr}.trait-grid>div,.install li{border-left:0;border-top:1px solid var(--line)}.trait-grid>div:first-child,.install li:first-child{border-top:0}.proof-row{grid-template-columns:1fr 1fr;padding-block:24px}.proof-row>span{grid-column:1/-1;text-align:center}.hero-art{min-height:470px}.contact>div:last-child{align-items:flex-start}.footer-row{align-items:flex-start;flex-direction:column}}
@media(max-width:560px){.wrap{width:min(calc(100% - 28px),var(--max))}.hero{padding:44px 0 66px}h1{font-size:clamp(3rem,16vw,4.4rem)}.hero-art{min-height:410px}.app-card{inset:45px 0 0 10px;padding:16px}.art-tag{right:0;top:6px}.proof-row{grid-template-columns:1fr}.proof-row>span{grid-column:auto}.section{padding:76px 0}.callout,.highlight .wrap,.advanced,.contact,.download-hero-grid{padding:34px 24px}.footer nav{flex-direction:column;gap:8px}.tabs{overflow:auto}.requirements p{align-items:flex-start;flex-direction:column}.requirements span{text-align:left}.support{grid-template-columns:1fr}}