:root{color-scheme:light;--bg:#f3f7fb;--surface:#fbfdff;--subtle:#e8f0f8;--text:#182b42;--muted:#526579;--border:#d1deeb;--accent:#1268c6;--accent-hover:#0a52a3;--on-accent:#fbfdff;--code-key:#1860b1;--code-string:#337350;--code-number:#a44816;--shadow:rgba(27,62,105,.12);--radius:12px;--font:"PingFang SC","Microsoft YaHei UI","Segoe UI",sans-serif;--mono:"SFMono-Regular",Consolas,monospace}
:root[data-theme="dark"]{color-scheme:dark;--bg:#101923;--surface:#172432;--subtle:#203246;--text:#e6eef7;--muted:#afc0d0;--border:#344b62;--accent:#8bc6ff;--accent-hover:#b2d9ff;--on-accent:#102638;--code-key:#8bc6ff;--code-string:#a2d3b2;--code-number:#efb491;--shadow:rgba(0,8,18,.3)}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.75 var(--font);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button,select{font:inherit}button,a,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled,[aria-disabled="true"]{cursor:default}button:focus-visible,a:focus-visible,select:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:3px solid var(--accent);outline-offset:4px}button,a{touch-action:manipulation}.wrap{width:min(1240px,calc(100% - 96px));margin-inline:auto}.header{height:88px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border);gap:24px}.brand{display:flex;gap:11px;align-items:center;font-size:23px;font-weight:700;white-space:nowrap}.brand-mark{width:34px;height:34px;display:grid;place-items:center;background:var(--text);color:var(--bg);border-radius:9px;font-size:23px}.brand-en{font:10px/1 var(--mono);letter-spacing:.13em;font-weight:500;color:var(--muted)}nav,.nav-actions{display:flex;align-items:center;gap:30px}nav a{font-size:13px;color:var(--muted)}nav a:hover,.text-link:hover{color:var(--accent)}.nav-actions{gap:15px}.button{display:inline-flex;justify-content:center;align-items:center;gap:24px;min-height:48px;padding:12px 25px;border:1px solid transparent;border-radius:8px;background:var(--accent);color:var(--on-accent);font-weight:600;font-size:14px;white-space:nowrap;transition:background .2s,transform .2s}.button:hover{background:var(--accent-hover);transform:translateY(-2px)}.button:active{transform:translateY(0)}.button:disabled,.button[aria-disabled="true"]{background:var(--subtle);color:var(--muted);border-color:var(--border);transform:none}.small{min-height:40px;padding:8px 17px;font-size:12px;gap:20px}.theme-button{border:0;background:transparent;color:var(--muted);font-size:12px;min-width:44px;min-height:44px}.hero{display:grid;grid-template-columns:1fr 1.05fr;align-items:center;min-height:510px;position:relative;padding-block:55px}.hero-copy{z-index:1}.eyebrow{font-size:12px;letter-spacing:.11em;color:var(--accent);margin:0 0 22px;font-weight:600}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(38px,4.8vw,66px);font-weight:600;line-height:1.23;letter-spacing:-.055em;margin-bottom:24px}.hero-description{font-size:17px;color:var(--muted);line-height:1.9;margin-bottom:29px}.hero-actions{display:flex;align-items:center;gap:30px}.text-link{font-size:13px;font-weight:600;display:inline-flex;gap:18px;align-items:center;min-height:44px}.hero-art{width:100%;align-self:stretch;display:flex;align-items:center;overflow:hidden;border-radius:30px}.hero-art img{width:120%;max-width:none;height:auto;margin-left:-10%;mix-blend-mode:multiply}:root[data-theme="dark"] .hero-art img{mix-blend-mode:normal;border-radius:30px;opacity:.9}h2{font-size:clamp(27px,3vw,39px);font-weight:550;letter-spacing:-.04em;line-height:1.4;margin-bottom:15px}.product{padding-top:25px}.product-heading{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:24px}.product-heading h2{font-size:25px;margin-bottom:7px}.product-heading p{margin:0;color:var(--muted);font-size:13px}.quiet-label{font-size:11px;color:var(--muted);white-space:nowrap;padding-bottom:3px}.preview{display:block;overflow:hidden;border:1px solid var(--border);border-radius:var(--radius);box-shadow:0 24px 55px -25px var(--shadow)}.preview img{display:block;width:100%;height:auto}.product-features{display:grid;grid-template-columns:repeat(3,1fr);padding:27px 0 40px;gap:30px}.product-features p{margin:0}.product-features strong{font-size:14px;font-weight:600;display:block;margin-bottom:5px}.product-features span{font-size:12px;color:var(--muted)}.language{display:grid;grid-template-columns:.85fr 1.15fr;gap:90px;padding-block:115px;border-top:1px solid var(--border)}.section-symbol{display:block;color:var(--accent);font-size:30px;margin-bottom:25px}.language-copy>p{color:var(--muted);max-width:310px;font-size:14px;line-height:1.9}.example{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;align-self:center}.example-tabs{display:flex;align-items:center;gap:0;border-bottom:1px solid var(--border);padding:0 18px}.example-tabs button{min-height:54px;padding:0 12px;border:0;background:none;color:var(--muted);font-size:12px;position:relative}.example-tabs [aria-selected="true"]{color:var(--accent)}.example-tabs [aria-selected="true"]:after{content:"";position:absolute;height:2px;bottom:0;left:12px;right:12px;background:var(--accent)}.example-tabs .copy-button{margin-left:auto;font-size:11px}.filename{font-size:11px;color:var(--muted);margin:23px 30px 12px}pre{font:14px/2 var(--mono);margin:0;white-space:pre-wrap;overflow-wrap:anywhere}#code{display:block;padding:0 30px;min-height:200px}.token-key{color:var(--code-key)}.token-string{color:var(--code-string)}.token-number{color:var(--code-number)}.example-result{border-top:1px solid var(--border);margin:0 30px;padding:14px 0 20px}.example-result>span{color:var(--muted);font-size:11px}.example-result pre{font-size:13px;margin-top:5px}.example-note{margin:0;padding:10px 30px;background:var(--subtle);color:var(--muted);font-size:10px}.download-section{background:var(--subtle);padding:82px 0 62px}.download-heading{text-align:center;margin-bottom:42px}.download-heading h2 br{display:none}.download-heading .eyebrow{margin-bottom:13px}.download-heading>p:last-child{color:var(--muted);font-size:14px}.download-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;max-width:940px;margin:auto}.download-card{padding:35px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);display:flex;flex-direction:column}.os-heading{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:14px}.os-heading h3{font-size:28px;letter-spacing:-.04em;font-weight:550;margin:0}.architecture,select{font-size:11px;color:var(--muted);border:1px solid var(--border);border-radius:6px;padding:5px 9px;background:var(--surface)}select{min-height:40px;max-width:160px}.os-description{font-size:13px;color:var(--muted);margin-bottom:28px}.release-meta{font:12px/1.7 var(--mono);color:var(--muted);margin-bottom:15px;min-height:21px}.platform-button{width:100%;min-height:48px}.release-note{font-size:12px;color:var(--muted);margin:17px 0 0;min-height:44px}.checksum{font-size:11px;color:var(--accent);margin-top:14px;min-height:30px}.download-footnote{text-align:center;color:var(--muted);font-size:11px;margin:28px 0 0;line-height:1.9}.release-error{text-align:center;color:var(--text)}.release-error button{color:var(--accent);background:none;border:0;text-decoration:underline;padding:10px}.faq{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px;padding-block:100px}.faq h2{font-size:31px}.faq-items{border-top:1px solid var(--border)}details{border-bottom:1px solid var(--border)}summary{list-style:none;cursor:pointer;padding:21px 30px 21px 0;position:relative;font-size:14px}summary::-webkit-details-marker{display:none}summary:after{content:"+";position:absolute;right:0;color:var(--muted);font-size:21px;top:13px}details[open] summary:after{content:"−"}details p{font-size:13px;color:var(--muted);margin:0 0 22px;max-width:95%}.footer{border-top:1px solid var(--border);min-height:110px;display:flex;align-items:center;gap:36px}.footer>.brand{font-size:20px}.footer p{font-size:12px;color:var(--muted);margin:0}.footer>span{margin-left:auto;font-size:11px;color:var(--muted)}dialog{max-width:460px;width:calc(100% - 40px);border:1px solid var(--border);border-radius:16px;padding:42px;background:var(--surface);color:var(--text);box-shadow:0 30px 80px var(--shadow)}dialog::backdrop{background:rgba(14,28,43,.45);backdrop-filter:blur(5px)}dialog h2{font-size:26px;margin-top:18px}dialog p{font-size:14px;color:var(--muted)}.dialog-tag{font:11px var(--mono);color:var(--accent)}.dialog-close{position:absolute;right:14px;top:10px;width:40px;height:40px;font-size:24px;color:var(--muted);border:0;background:none}.toast{position:fixed;bottom:28px;left:50%;transform:translateX(-50%);padding:12px 24px;border:1px solid var(--border);border-radius:8px;background:var(--surface);box-shadow:0 6px 25px var(--shadow);z-index:2;font-size:13px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}.skip-link{position:fixed;top:-80px;left:20px;padding:12px;background:var(--surface);z-index:3}.skip-link:focus{top:10px}.noscript{padding:25px;text-align:center}[hidden]{display:none!important}
@media(prefers-reduced-motion:no-preference){.hero-copy{animation:enter .6s both}.hero-art{animation:enter .8s .1s both}@keyframes enter{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}
@media(max-width:1024px){.wrap{width:calc(100% - 56px)}.header{height:76px}nav{gap:18px}.brand-en{display:none}.hero{min-height:470px}.hero-actions{gap:18px}.language{gap:40px;padding-block:80px}.quiet-label{display:none}.download-card{padding:27px}.faq{gap:40px}}
@media(max-width:767px){.wrap{width:calc(100% - 36px)}.header{height:70px;gap:12px}nav{display:none}.nav-actions{gap:6px}.brand{font-size:21px}.hero{grid-template-columns:1fr;padding-block:40px 15px}.hero-copy{padding-left:6px}.eyebrow{font-size:11px;margin-bottom:18px}h1{font-size:43px}.hero-description{font-size:15px}.hero-art{height:230px;margin-top:15px}.hero-art img{width:100%;margin:0}.hero-actions{gap:24px}.product{padding-top:20px}.product-heading h2{font-size:23px}.product-heading p{font-size:12px}.product-features{gap:18px;padding-bottom:30px}.product-features strong{font-size:12px}.product-features span{font-size:11px}.language{grid-template-columns:1fr;gap:28px;padding-block:55px}.language-copy h2 br{display:none}.section-symbol{font-size:25px;margin-bottom:18px}.language-copy>p{max-width:100%}.language-copy>.text-link{display:none}.example-tabs{padding:0 6px}.example-tabs button{padding:0 9px;font-size:11px}.example-tabs .copy-button{font-size:10px}.filename{margin-left:20px}#code{padding:0 20px;font-size:12px}.example-result{margin:0 20px}.example-note{padding-inline:20px}.download-section{padding-block:55px 40px}.download-heading{text-align:left}.download-heading h2{font-size:32px}.download-heading h2 br{display:block}.download-grid{grid-template-columns:1fr;gap:16px}.download-card{padding:25px}.release-note{min-height:0}.download-footnote{text-align:left}.faq{grid-template-columns:1fr;gap:22px;padding-block:55px}.faq h2{font-size:27px}.faq h2 br{display:none}.footer{flex-wrap:wrap;gap:10px;padding-block:24px;min-height:110px}.footer p{width:100%;order:3}.footer>span{margin-left:auto}dialog{padding:30px}}

/* 首页与文档共用页面切换导航。 */
.page-tabs{align-self:stretch;gap:28px}
.page-tabs a{display:flex;align-items:center;min-height:44px;border-bottom:2px solid transparent;font-size:14px;white-space:nowrap}
.page-tabs a[aria-current="page"]{color:var(--accent);border-bottom-color:var(--accent);font-weight:600}
@media(max-width:767px){.header .page-tabs{display:flex;gap:18px;order:3;width:100%;height:44px;flex-shrink:0}.header:has(.page-tabs){height:auto;min-height:112px;padding-top:10px;flex-wrap:wrap;gap:0 12px}.header:has(.page-tabs) .nav-actions{margin-left:auto}.header:has(.page-tabs) .brand-en{display:none}}