:root{--night: #0b0b0d;--panel: #111114;--panel-2: #151519;--porcelain: #f3f1ea;--muted: #96938a;--muted-2: #6e6b63;--line: rgba(243, 241, 234, .12);--line-strong: rgba(243, 241, 234, .22);--red: #e23b3b;--burgundy: #5e1a24;--ink: #121214;--dot: rgba(243, 241, 234, .09);--hero-glow-a: rgba(226, 59, 59, .12);--hero-glow-b: rgba(94, 26, 36, .24);--stage-glow: rgba(243, 241, 234, .075);--header-bg: rgba(11, 11, 13, .74);--shadow: rgba(0, 0, 0, .35);--loading-bg: rgba(11, 11, 13, .35);--card: rgba(243, 241, 234, .035);--card-2: rgba(243, 241, 234, .01);--swatch-border: rgba(243, 241, 234, .28);--ghost: rgba(243, 241, 234, .06);--line-soft: rgba(243, 241, 234, .06);--sans: "HarmonyOS Sans SC", "HarmonyOS Sans", "PingFang SC", "Microsoft YaHei", sans-serif;--serif: "HarmonyOS Sans SC", "HarmonyOS Sans", "PingFang SC", "Microsoft YaHei", sans-serif;--mono: "HarmonyOS Sans SC", "HarmonyOS Sans", "PingFang SC", "Microsoft YaHei", sans-serif;--max: 1240px;--pad: clamp(20px, 4vw, 56px)}[data-theme=light]{--night: #f3f1ea;--panel: #fbfaf6;--panel-2: #f7f5ef;--porcelain: #121214;--muted: #6e6b63;--muted-2: #96938a;--line: rgba(18, 18, 20, .12);--line-strong: rgba(18, 18, 20, .22);--ink: #f3f1ea;--dot: rgba(18, 18, 20, .1);--hero-glow-a: rgba(226, 59, 59, .1);--hero-glow-b: rgba(94, 26, 36, .1);--stage-glow: rgba(18, 18, 20, .035);--header-bg: rgba(243, 241, 234, .8);--shadow: rgba(18, 18, 20, .12);--loading-bg: rgba(243, 241, 234, .55);--card: rgba(18, 18, 20, .035);--card-2: rgba(18, 18, 20, .01);--swatch-border: rgba(18, 18, 20, .28);--ghost: rgba(18, 18, 20, .06);--line-soft: rgba(18, 18, 20, 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.logo-dark{display:none}[data-theme=light] .logo-light{display:inline-block}.header-actions{display:flex;align-items:center;gap:8px}.theme{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;border:1px solid var(--line-strong);background:transparent;color:var(--porcelain);cursor:pointer;transition:background .2s ease,color .2s ease,border-color .2s ease}.theme:hover{background:var(--porcelain);color:var(--ink);border-color:var(--porcelain)}.nav{display:flex;align-items:center;gap:clamp(14px,2.2vw,30px);font-size:.86rem;color:var(--muted)}.nav a{transition:color .2s ease}.nav a:hover{color:var(--porcelain)}.pill{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line-strong);border-radius:999px;padding:8px 14px;font-size:.8rem;white-space:nowrap;transition:background .2s ease,border-color .2s ease}.pill:hover{background:var(--porcelain);color:var(--ink);border-color:var(--porcelain)}.nav-paper{position:relative;display:flex;align-items:center}.nav-paper-trigger{display:inline-flex;align-items:center;gap:5px}.nav-chevron{font-size:.72em;line-height:1;transition:transform .2s ease}.nav-paper:hover .nav-chevron,.nav-paper:focus-within .nav-chevron{transform:rotate(180deg)}.paper-menu{position:absolute;top:calc(100% + 14px);left:50%;z-index:70;width:360px;padding:8px;border:1px solid var(--line-strong);border-radius:18px;background:var(--panel-2);box-shadow:0 28px 80px var(--shadow);opacity:0;visibility:hidden;pointer-events:none;transform:translate(-50%,-6px);transition:opacity .18s ease,transform .18s ease,visibility .18s ease}.paper-menu:before{content:"";position:absolute;left:0;right:0;top:-16px;height:16px}.nav-paper:hover .paper-menu,.nav-paper:focus-within .paper-menu{opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%)}.paper-menu-head{padding:6px 10px 8px;color:var(--muted-2);font-size:.6rem;letter-spacing:.1em}.paper-menu-item{position:relative;display:flex;flex-direction:column;gap:3px;padding:12px 38px 12px 14px;border-radius:12px;transition:background .2s ease}.paper-menu-item:hover,.paper-menu-item:focus-visible{background:var(--ghost)}.paper-menu-all{display:none}.paper-menu-item .mono{color:var(--muted-2);font-size:.58rem}.paper-menu-item strong{color:var(--porcelain);font-size:.9rem;font-weight:600}.paper-menu-item small{color:var(--muted);font-size:.72rem}.paper-menu-arrow{position:absolute;right:14px;top:50%;transform:translateY(-50%);color:var(--muted-2);font-family:var(--mono)}.paper-menu-item:hover 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11px;color:var(--muted);font-family:var(--mono);font-size:.68rem;letter-spacing:.04em}.hero{position:relative;max-width:var(--max);margin:0 auto;padding:clamp(40px,6vw,84px) var(--pad) clamp(36px,4.5vw,64px);display:grid;grid-template-columns:minmax(0,1.02fr) minmax(0,.98fr);gap:clamp(28px,5vw,72px);align-items:center}.hero:before{content:"";position:absolute;inset:0 calc(50% - 50vw);z-index:-1;background:radial-gradient(820px 560px at 72% 20%,var(--hero-glow-a),transparent 65%),radial-gradient(720px 540px at 12% 76%,var(--hero-glow-b),transparent 65%),radial-gradient(var(--dot) 1px,transparent 1px);background-size:auto,auto,22px 22px;-webkit-mask-image:linear-gradient(to bottom,#000 0%,#000 62%,transparent 100%);mask-image:linear-gradient(to bottom,#000 0%,#000 62%,transparent 100%);opacity:.7}.hero-copy{display:flex;flex-direction:column;gap:18px;animation:rise .8s cubic-bezier(.2,.7,.2,1) both}.hero h1{font-size:clamp(2.8rem,5.6vw,5.2rem);line-height:.98;letter-spacing:-.045em;font-weight:600}.hero h1 em{font-style:normal;color:var(--red)}.facts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:8px;padding-top:20px;border-top:1px solid var(--line);max-width:30rem}.facts div{display:flex;flex-direction:column;gap:4px}.facts .mono{color:var(--muted-2)}.facts strong{font-size:1.05rem;font-weight:600}.facts small{color:var(--muted);font-size:.76rem}.stage{position:relative;border:1px solid var(--line);border-radius:28px;background:radial-gradient(520px 420px at 50% 34%,var(--stage-glow),transparent 70%),linear-gradient(160deg,var(--panel-2) 0%,var(--panel) 72%);overflow:hidden;animation:rise .9s cubic-bezier(.2,.7,.2,1) .08s both;box-shadow:0 40px 120px var(--shadow)}.stage-bar{display:flex;justify-content:space-between;gap:16px;padding:16px 20px 0;color:var(--muted-2)}.stage-bar .mono:last-child{color:var(--muted)}.viewer{position:relative;height:min(56vh,560px);min-height:360px;width:100%;touch-action:none}.viewer canvas{display:block;width:100%!important;height:100%!important;cursor:grab}.viewer canvas:active{cursor:grabbing}.viewer-load{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;gap:10px;color:var(--muted);background:var(--loading-bg);pointer-events:none}.stage-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 20px 18px;border-top:1px solid rgba(243,241,234,.07);flex-wrap:wrap}.hint{color:var(--muted-2);font-family:var(--mono);font-size:.65rem;letter-spacing:.06em}.swatches{display:flex;flex-wrap:wrap;align-items:center;gap:6px}.swatch{display:inline-flex;align-items:center;gap:8px;padding:6px 9px 6px 7px;border-radius:999px;border:1px solid transparent;background:transparent;color:var(--muted);cursor:pointer;transition:border-color .2s ease,color .2s ease,background .2s ease}.swatch:hover{color:var(--porcelain);background:var(--ghost)}.swatch.active{border-color:var(--line-strong);color:var(--porcelain);background:var(--ghost)}.swatch-dot{width:18px;height:18px;border-radius:50%;background:var(--swatch);border:1px solid var(--swatch-border);box-shadow:inset 0 0 0 1px #00000038;flex:none}.swatch.active .swatch-dot{box-shadow:inset 0 0 0 1px #00000038,0 0 0 2px var(--night),0 0 0 3px var(--porcelain)}.swatch-name{font-size:.72rem;white-space:nowrap}.split{max-width:var(--max);margin:0 auto;padding:clamp(56px,8vw,108px) var(--pad);display:grid;grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);gap:clamp(28px,5vw,76px);align-items:center;border-top:1px solid var(--line)}.split-copy{display:flex;flex-direction:column;gap:22px}.split h2,.section h2,.brand h2{font-size:clamp(2.1rem,3.8vw,3.5rem);line-height:1.06;letter-spacing:-.04em;font-weight:600}.split h2 em,.brand h2 em{font-style:normal;color:var(--red)}.stage-small .viewer{height:min(48vh,470px);min-height:320px}.section{max-width:var(--max);margin:0 auto;padding:clamp(56px,8vw,108px) var(--pad);border-top:1px solid var(--line)}.section-head{display:flex;flex-direction:column;gap:16px;max-width:48rem;margin-bottom:clamp(28px,4vw,48px)}.section-head>p:last-child{color:var(--muted);line-height:1.8;max-width:34rem}.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.cards article{display:flex;flex-direction:column;gap:14px;padding:24px;border:1px solid var(--line);border-radius:22px;background:linear-gradient(170deg,var(--card),var(--card-2));transition:border-color .2s ease,transform .2s ease}.cards article:hover{border-color:var(--line-strong);transform:translateY(-2px)}.index{color:var(--muted-2);font-family:var(--mono);font-size:.7rem;letter-spacing:.08em}.cards h3{font-size:1.12rem;font-weight:600;letter-spacing:-.01em}.cards p{color:var(--muted);font-size:.9rem;line-height:1.75}.spec-columns{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.spec-card{border:1px solid var(--line);border-radius:24px;background:var(--panel);overflow:hidden}.spec-card header{display:flex;align-items:flex-start;gap:14px;padding:24px;border-bottom:1px solid var(--line)}.spec-card header h3{font-size:1.1rem;font-weight:600;letter-spacing:-.01em}.spec-card header p{color:var(--muted);font-size:.8rem;margin-top:4px}.spec-card dl{display:flex;flex-direction:column}.spec-card dl>div{display:flex;align-items:baseline;justify-content:space-between;gap:18px;padding:12px 24px;border-bottom:1px solid var(--line-soft)}.spec-card dl>div:last-child{border-bottom:0}.spec-card dt{color:var(--muted-2);font-family:var(--mono);font-size:.68rem;letter-spacing:.06em;text-transform:uppercase;flex:none}.spec-card dd{color:var(--porcelain);font-size:.86rem;text-align:right;line-height:1.5}.brand{max-width:var(--max);margin:0 auto;padding:clamp(56px,8vw,108px) var(--pad);display:grid;grid-template-columns:minmax(0,.94fr) minmax(0,1.06fr);gap:clamp(28px,5vw,72px);align-items:center;border-top:1px solid var(--line)}.brand-copy{display:flex;flex-direction:column;gap:22px}.brand-art{position:relative;border:1px solid var(--line);border-radius:28px;padding:clamp(18px,3vw,34px);background:radial-gradient(520px 320px at 60% 20%,rgba(226,59,59,.1),transparent 70%),linear-gradient(160deg,#141418,#0b0b0d);overflow:hidden}.brand-art:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background-image:radial-gradient(rgba(243,241,234,.1) 1px,transparent 1px);background-size:18px 18px;-webkit-mask-image:linear-gradient(130deg,transparent 10%,#000 55%,transparent 95%);mask-image:linear-gradient(130deg,transparent 10%,#000 55%,transparent 95%);opacity:.5;pointer-events:none}.brand-primary{position:relative;width:100%}.footer{max-width:var(--max);margin:0 auto;padding:28px var(--pad) 42px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:22px;flex-wrap:wrap}.foot-brand{display:flex;align-items:center;gap:12px}.foot-brand img{height:28px;width:auto}.foot-mark-light,[data-theme=light] .foot-mark-dark{display:none}[data-theme=light] .foot-mark-light{display:inline-block}.foot-brand p{color:var(--muted-2);font-size:.72rem}.footer nav{display:flex;gap:16px;color:var(--muted);font-size:.78rem}.foot-note{color:var(--muted-2);font-size:.62rem}.exploded-section h2 em{font-style:normal;color:var(--red)}.exploded{display:flex;flex-direction:column;gap:14px}.exploded-stage{position:relative;border:1px solid rgba(243,241,234,.12);border-radius:28px;overflow:hidden;background:radial-gradient(620px 420px at 64% 24%,rgba(226,59,59,.1),transparent 70%),radial-gradient(rgba(243,241,234,.055) 1px,transparent 1px),linear-gradient(160deg,#151519,#0b0b0d 74%);background-size:auto,18px 18px,auto;box-shadow:0 40px 120px var(--shadow)}.exploded-stage .stage-bar{color:#f3f1ea66}.exploded-stage .stage-bar .mono:last-child{color:#f3f1ea9e}.exploded-stage .stage-foot{border-top-color:#f3f1ea14}.exploded-stage .hint{color:#f3f1ea6b}.exploded-stage .viewer-load{z-index:2;color:#f3f1eab3;background:#0b0b0d59}.exploded-viewer{height:min(62vh,620px);min-height:460px}.exploded-tools{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:14px}.exploded-control,.exploded-legend{border:1px solid var(--line);border-radius:22px;background:linear-gradient(170deg,var(--card),var(--card-2));padding:22px}.exploded-control{display:flex;flex-direction:column;gap:12px}.explode-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px}.explode-head .mono{color:var(--muted-2)}.explode-head strong{font-size:1.45rem;font-weight:600;letter-spacing:-.02em}.explode-scale{display:flex;justify-content:space-between;color:var(--muted-2);font-size:.72rem}.explode-range{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:100%;height:4px;margin:6px 0;border-radius:999px;outline:none;background:linear-gradient(to right,var(--red) 0 var(--explode),var(--line-strong) var(--explode) 100%);cursor:pointer}.explode-range::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:18px;height:18px;border-radius:50%;background:var(--porcelain);border:2px solid var(--ink);box-shadow:0 0 0 1px var(--line-strong);cursor:grab}.explode-range::-moz-range-thumb{width:14px;height:14px;border-radius:50%;background:var(--porcelain);border:2px solid var(--ink);box-shadow:0 0 0 1px var(--line-strong);cursor:grab}.explode-range:focus-visible{outline:2px solid var(--red);outline-offset:6px}.explode-actions{display:flex;gap:8px;margin-top:4px}.explode-note{margin-top:auto;padding-top:14px;border-top:1px solid var(--line-soft);color:var(--muted-2);font-size:.7rem;line-height:1.6}.explode-btn{min-height:38px;padding:0 18px;border-radius:999px;border:1px solid var(--line-strong);background:transparent;color:var(--porcelain);font-size:.82rem;cursor:pointer;transition:background .2s ease,color .2s ease,border-color .2s ease,opacity .2s ease}.explode-btn:hover:not(:disabled){background:var(--ghost)}.explode-btn.primary{background:var(--porcelain);color:var(--ink);border-color:var(--porcelain)}.explode-btn.primary:hover:not(:disabled){background:#fff}.explode-btn:disabled{opacity:.35;cursor:default}.exploded-legend{display:flex;flex-direction:column}.legend-head{display:flex;justify-content:space-between;gap:16px;padding-bottom:12px;border-bottom:1px solid var(--line);color:var(--muted-2)}.exploded-legend ol{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 14px;list-style:none;margin:12px 0 0;padding:0}.exploded-legend li{display:flex;align-items:center;gap:8px;color:var(--muted);font-size:.8rem;line-height:1.5}.legend-num{width:18px;flex:none;color:var(--muted-2);font-size:.6rem}.legend-dot{width:8px;height:8px;flex:none;border-radius:50%;background:var(--dot);border:1px solid var(--line-strong)}.exploded-note{margin-top:auto;padding-top:14px;border-top:1px solid var(--line-soft);color:var(--muted-2);font-size:.7rem;line-height:1.6}@media (max-width: 860px){.exploded-viewer{height:480px;min-height:400px}.exploded-tools{grid-template-columns:1fr}}@media (max-width: 560px){.exploded-stage{border-radius:22px}.exploded-viewer{height:390px;min-height:340px}.exploded-control,.exploded-legend{padding:16px}.exploded-legend ol{gap:6px 10px}.exploded-legend li{font-size:.74rem}}.paper-page .hero{border-bottom:1px solid var(--line)}.spec-card dd a{color:var(--porcelain);text-decoration:underline;text-decoration-color:var(--line-strong);text-underline-offset:3px;transition:color .2s ease}.spec-card dd a:hover{color:var(--red)}.support-hero{position:relative;max-width:var(--max);margin:0 auto;padding:clamp(48px,7vw,96px) var(--pad) clamp(36px,5vw,64px);display:flex;flex-direction:column;gap:18px}.support-hero:before{content:"";position:absolute;inset:0 calc(50% - 50vw);z-index:-1;background:radial-gradient(720px 480px at 82% 12%,var(--hero-glow-a),transparent 65%),radial-gradient(620px 460px at 8% 80%,var(--hero-glow-b),transparent 65%),radial-gradient(var(--dot) 1px,transparent 1px);background-size:auto,auto,22px 22px;-webkit-mask-image:linear-gradient(to bottom,#000 0%,#000 72%,transparent 100%);mask-image:linear-gradient(to bottom,#000 0%,#000 72%,transparent 100%);opacity:.62}.support-hero h1{font-size:clamp(2.8rem,5.6vw,5.2rem);line-height:.98;letter-spacing:-.045em;font-weight:600}.support-hero h1 em{font-style:normal;color:var(--red)}.support-hero .lede{max-width:40rem}.support-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.support-card{display:flex;flex-direction:column;gap:12px;padding:24px;border:1px solid var(--line);border-radius:22px;background:linear-gradient(170deg,var(--card),var(--card-2))}.support-card h3{font-size:1.08rem;font-weight:600;letter-spacing:-.01em}.support-card p{color:var(--muted);font-size:.9rem;line-height:1.78}.support-downloads{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:12px}.download-link{position:relative;display:flex;flex-direction:column;gap:6px;padding:18px 20px;border:1px solid var(--line);border-radius:18px;background:var(--panel);transition:background .2s ease,border-color .2s ease,transform .2s ease}.download-link:hover{background:var(--panel-2);border-color:var(--line-strong);transform:translateY(-1px)}.download-link .mono{color:var(--muted-2);font-size:.62rem}.download-link 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