:root{color-scheme:dark;--paper:#11120f;--surface:#191a15;--ink:#f1eee6;--muted:#aaa99e;--gold:#c6ad75;--rule:#35362e;font-family:"Segoe UI","Microsoft YaHei UI","Microsoft YaHei",sans-serif;font-synthesis:none}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:28px}body{margin:0;background:var(--paper);color:var(--ink);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}a:focus-visible,summary:focus-visible{outline:2px solid var(--gold);outline-offset:6px}a,summary{-webkit-tap-highlight-color:transparent}::selection{background:var(--gold);color:var(--paper)}.wrap{width:min(1200px,calc(100% - 96px));margin-inline:auto}.skip{position:fixed;top:8px;left:8px;padding:12px;background:var(--gold);color:var(--paper);z-index:4;transform:translateY(-200%)}.skip:focus{transform:translateY(0)}.masthead{display:flex;align-items:center;justify-content:space-between;padding-block:32px;border-bottom:1px solid var(--rule)}.signature{font-size:19px;letter-spacing:-1px;font-weight:750}.signature>span:first-child{color:var(--gold);padding:0 7px}.project-label{display:inline-block;margin-left:25px;font-size:10px;letter-spacing:1.5px;color:var(--muted);font-weight:500}.back{font-size:13px;color:var(--muted);padding:8px 0}.back span{margin-left:18px;color:var(--gold)}.back:hover,.text-link:hover{color:var(--ink)}
.hero{padding:64px 0 56px}.hero-top{display:flex;align-items:center;justify-content:space-between;gap:16px}.eyebrow{font-size:11px;letter-spacing:1.8px;color:var(--muted);line-height:1.6}.release{font-size:11px;letter-spacing:1px;border:1px solid #665a3f;color:var(--gold);padding:6px 11px;border-radius:2px;white-space:nowrap}.hero h1{font-size:clamp(80px,13.6vw,171px);line-height:1.12;letter-spacing:-.072em;margin:20px 0 34px;font-weight:750}.hero h1>span:first-child{color:var(--gold)}.title-dot{color:#57594b}.hero-bottom{display:grid;grid-template-columns:1fr 260px;gap:60px}.hero h2{font-size:clamp(22px,2.6vw,32px);line-height:1.4;letter-spacing:.01em;margin:0 0 18px;font-weight:550}.intro{color:var(--muted);font-size:15px;line-height:1.95;margin:0}.actions{display:flex;align-items:center;gap:28px;flex-wrap:wrap;margin-top:30px}.button{display:inline-flex;justify-content:center;align-items:center;gap:14px;min-height:52px;padding:15px 22px;font-size:14px;font-weight:650;border:1px solid var(--gold);border-radius:3px;transition:background .15s,border-color .15s}.primary{background:var(--gold);color:var(--paper)}.primary:hover{background:#dcc695;border-color:#dcc695}.button-size{font-size:11px;opacity:.73;margin-left:9px;font-weight:500}.text-link{display:inline-flex;gap:21px;color:var(--muted);font-size:13px;padding:15px 0}.text-link span{color:var(--gold)}.download-note{font-size:11px;color:var(--muted);margin:14px 0 0;line-height:1.8}.hero-aside{border-left:1px solid var(--rule);padding-left:36px;align-self:stretch;display:flex;flex-direction:column;justify-content:center}.hero-aside p{font-size:28px;line-height:1.65;font-weight:350;margin:15px 0}.hero-aside p span{color:var(--gold)}.aside-note{font-size:11px;color:var(--muted);letter-spacing:1px}
.preview{margin:0;background:var(--surface);border:1px solid #4a4535;border-radius:4px;overflow:hidden}.preview-bar{display:flex;justify-content:space-between;align-items:center;gap:15px;padding:18px 24px;font-size:10px;color:var(--muted);letter-spacing:1px;border-bottom:1px solid var(--rule)}.preview-bar i{width:6px;height:6px;display:inline-block;border-radius:50%;background:var(--gold);margin-right:9px}.preview>a{display:block;padding:28px 7% 0;background:linear-gradient(135deg,#28271e,#1a1b16 60%)}.preview img{display:block;width:100%;height:auto;border:1px solid #414136;border-radius:4px 4px 0 0;box-shadow:0 18px 48px #0005}.preview figcaption{display:flex;justify-content:space-between;gap:15px;padding:18px 24px;color:var(--muted);font-size:11px;border-top:1px solid var(--rule)}.preview figcaption>span:first-child{color:var(--gold);letter-spacing:1px}
.section{padding:76px 0;border-bottom:1px solid var(--rule)}.section-heading h2{font-size:clamp(26px,3.2vw,38px);line-height:1.4;letter-spacing:-.02em;font-weight:550;margin:17px 0}.section-heading>p{color:var(--muted);font-size:14px;line-height:1.8;margin:0}.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:40px;padding:0;margin:40px 0 28px;list-style:none}.steps li{padding-top:18px;border-top:1px solid var(--rule)}.step-number{font-size:14px;font-variant-numeric:tabular-nums;color:var(--gold)}h3{font-size:18px;font-weight:550;margin:23px 0 13px}.steps p,.compat-grid p{color:var(--muted);font-size:13px;line-height:1.95;margin:0}.steps strong{font-weight:550;color:var(--ink)}code{font-family:Consolas,monospace;color:#dbcfac;font-size:.94em}kbd{font:11px Consolas,monospace;padding:2px 5px;border:1px solid #48493b;border-radius:3px;white-space:nowrap}.start-tip{padding:18px 20px;background:var(--surface);font-size:12px;line-height:1.8;color:var(--muted);border-left:2px solid var(--gold);margin:32px 0 0}.start-tip>span{color:var(--gold);margin-right:16px}
.behavior{display:grid;grid-template-columns:1fr 1.45fr;gap:60px}.behavior-list{margin:0}.behavior-list>div{border-bottom:1px solid var(--rule);padding:22px 0}.behavior-list>div:first-child{padding-top:0}.behavior-list>div:last-child{border-bottom:0;padding-bottom:0}.behavior-list dt{font-size:17px}.behavior-list dt span{color:var(--gold);font-size:11px;margin-right:20px}.behavior-list dd{color:var(--muted);font-size:13px;line-height:1.9;margin:11px 0 0 34px}.compat-grid{display:grid;grid-template-columns:1fr 1fr;gap:36px;margin:32px 0}.compat-grid>div{padding:26px 28px;background:var(--surface);border:1px solid var(--rule);border-radius:3px}.status{color:var(--gold);font-size:11px;letter-spacing:.6px}.status.muted{color:var(--muted)}.compat-grid h3{margin-top:14px;font-size:21px}details{border-bottom:1px solid var(--rule)}summary{list-style:none;display:flex;justify-content:space-between;gap:20px;cursor:pointer;padding:23px 0;font-size:14px;line-height:1.7}summary::-webkit-details-marker{display:none}summary>span{font-family:"Segoe UI",sans-serif;font-size:20px;color:var(--gold);line-height:1.2;flex-shrink:0}details[open]>summary>span{transform:rotate(45deg)}details>p{margin:0 0 22px;max-width:860px;font-size:13px;line-height:1.9;color:var(--muted)}.policy{font-size:11px;line-height:1.9;color:var(--muted);margin:26px 0 0;max-width:840px}
.download{display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center}.download h2{font-size:clamp(25px,3vw,38px);line-height:1.55;font-weight:550;margin:16px 0}.download h2>span{color:var(--gold)}.download>div>p{font-size:12px;color:var(--muted);margin:0}.download>.button{margin-top:15px}.integrity{grid-column:1/-1;border:0;border-top:1px solid var(--rule);margin-top:18px}.integrity summary{font-size:12px;color:var(--muted);padding-bottom:0}.integrity[open] summary{padding-bottom:20px}.digest{word-break:break-all;display:block;line-height:1.7}.file-links{display:flex;flex-wrap:wrap;gap:14px 28px;margin-top:20px;font-size:12px;color:var(--gold)}.file-links>a{padding:8px 0}.file-links>a:hover{text-decoration:underline}footer{display:flex;justify-content:space-between;gap:20px;padding-block:28px;font-size:11px;color:var(--muted)}footer>a{color:var(--gold)}.footer-note{font-size:9px;letter-spacing:1px;margin-left:14px}
@media(min-width:1500px){.wrap{width:min(1200px,calc(100% - 128px))}}@media(max-width:900px){.wrap{width:calc(100% - 48px)}.hero{padding-top:40px}.hero-bottom{grid-template-columns:1fr 210px;gap:30px}.hero-aside{padding-left:25px}.hero-aside p{font-size:24px}.desktop-break{display:none}.steps{gap:24px}.behavior{gap:30px;grid-template-columns:1fr 1.4fr}.section{padding-block:56px}.download h2>span{display:block}}
@media(max-width:620px){.wrap{width:calc(100% - 40px)}.masthead{padding-block:20px}.project-label{display:none}.signature{font-size:17px}.back{font-size:11px}.back span{margin-left:7px}.hero{padding:32px 0}.hero-top{gap:12px}.hero-top .eyebrow{font-size:8px;letter-spacing:1px}.release{font-size:9px;padding:5px 8px}.hero h1{font-size:clamp(64px,18vw,108px);letter-spacing:-.07em;margin:22px 0 26px}.hero-bottom{display:block}.hero-aside{display:none}.hero h2{font-size:23px}.intro{font-size:13px}.actions{gap:8px 24px;margin-top:24px}.button{font-size:13px;min-height:50px;padding:14px 17px}.button-size{font-size:10px;margin-left:3px}.text-link{font-size:12px;gap:14px}.download-note{font-size:10px}.preview-bar{padding:13px 12px;font-size:8px;letter-spacing:0}.preview-bar i{margin-right:5px}.preview>a{padding:14px 10px 0}.preview figcaption{padding:12px;font-size:9px}.preview figcaption>span:first-child{font-size:8px;letter-spacing:0}.section{padding-block:42px}.section-heading h2{font-size:26px;margin-block:13px}.section-heading>p{font-size:12px}.eyebrow{font-size:9px;letter-spacing:1px}.steps{grid-template-columns:1fr;gap:22px;margin-top:25px}.steps li{display:grid;grid-template-columns:33px 1fr;column-gap:8px;padding-top:18px}.step-number{grid-row:1/3;padding-top:3px}.steps h3{margin:0 0 9px;font-size:17px}.steps p{font-size:12px}.start-tip{font-size:11px;padding:14px}.behavior{display:block}.behavior-list{margin-top:28px}.behavior-list dt{font-size:16px}.behavior-list dd{font-size:12px}.compat-grid{grid-template-columns:1fr;gap:14px;margin-block:25px}.compat-grid>div{padding:23px}.compat-grid p{font-size:12px}summary{font-size:13px;padding-block:19px}details>p{font-size:12px}.policy{font-size:10px}.download{grid-template-columns:1fr;gap:16px}.download h2{font-size:27px}.download>.button{justify-self:start;margin-top:0}.integrity{margin-top:8px}.file-links{font-size:11px}footer{font-size:10px;align-items:center}.footer-note{display:none}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important}}