:root { --bg: #0b0d0c; --fg: #efefe7; --dim: #a0a69e; --dim2: #777f76; --line: rgba(229,236,219,.12); --line2: rgba(229,236,219,.23); --acid: #d0f86a; --page: 1248px; }
html { scroll-behavior: smooth; scroll-padding-top: 100px; }
body { background: var(--bg); color: var(--fg); font-family: var(--sans); -webkit-font-smoothing: antialiased; line-height: 1.6; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
button, a { -webkit-tap-highlight-color: transparent; }
button:focus-visible, a:focus-visible, summary:focus-visible, video:focus-visible { outline: 2px solid var(--acid); outline-offset: 6px; }
::selection { background: var(--acid); color: #11180a; }
em { font-weight: inherit; }
.mono { font-family: var(--mono); }
.skip-link { position: fixed; left: 20px; top: -80px; z-index: 100; background: var(--acid); color: #11180a; padding: 12px 20px; }
.skip-link:focus { top: 12px; }
.bar { position: sticky; top: 0; z-index: 50; min-height: 80px; padding: 0 max(32px, calc((100vw - var(--page)) / 2)); display: flex; align-items: center; gap: 48px; background: rgba(11,13,12,.91); backdrop-filter: blur(20px); border-bottom: 1px solid var(--line); }
.bar-logo { display: block; flex-shrink: 0; width: 92px; }
.bar nav { display: flex; gap: 28px; align-items: center; }
.bar nav a { color: var(--dim); font-size: 13px; white-space: nowrap; transition: color .2s; }
.bar nav a:hover, .bar nav a.on { color: var(--fg); }
.bar nav a.on { text-decoration: underline; text-decoration-color: var(--acid); text-underline-offset: 9px; }
.bar-r { margin-left: auto; display: flex; align-items: center; gap: 24px; }
.lang { display: flex; gap: 3px; padding: 3px; border: 1px solid var(--line); border-radius: 6px; }
.lang button { border: 0; background: transparent; color: var(--dim); border-radius: 3px; min-width: 32px; min-height: 30px; font: 500 11px var(--mono); }
.lang button.on { color: var(--fg); background: #292e27; }
.btn-cta, .btn-ghost { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 11px 21px; border-radius: 5px; font: 500 13px/1.5 var(--sans); letter-spacing: .015em; transition: background .2s, transform .2s, border-color .2s; }
.btn-cta { background: var(--acid); color: #17200d; border: 1px solid var(--acid); }
.btn-cta:hover { background: #ddff8b; border-color: #ddff8b; transform: translateY(-2px); }
.btn-ghost { border: 1px solid var(--line2); color: var(--fg); background: transparent; }
.btn-ghost:hover { background: #191e17; border-color: #66705c; }
.nav-cta { min-height: 38px; padding: 8px 15px; font-size: 12px; }
.menu-toggle { display: none; border: 1px solid var(--line2); border-radius: 5px; color: var(--fg); background: transparent; width: 38px; height: 38px; padding: 10px; }
.menu-toggle span { display: block; height: 1px; width: 16px; margin: 4px 0; background: currentColor; transition: transform .2s; }
.text-link { display: inline-block; color: var(--fg); font-size: 13px; border-bottom: 1px solid var(--line2); padding-bottom: 5px; transition: color .2s, border-color .2s; }
.text-link:hover { color: var(--acid); border-color: var(--acid); }
.hero, .sec, .value-strip, .foot { max-width: var(--page); margin-left: auto; margin-right: auto; }
.hero { display: grid; grid-template-columns: 1.1fr 1fr; align-items: center; gap: 64px; padding: 90px 0 84px; min-height: 680px; }
.kicker { display: flex; align-items: center; gap: 10px; font-size: 11px; font-weight: 500; letter-spacing: .11em; color: var(--dim); flex-wrap: wrap; }
.status-dot { width: 5px; height: 5px; border-radius: 50%; background: var(--acid); display: inline-block; flex-shrink: 0; box-shadow: 0 0 10px #d0f82635; }
.hero h1 { font-size: clamp(64px, 6.6vw, 94px); line-height: 1.02; letter-spacing: -.04em; margin: 24px 0 27px; }
.hero h1 em { color: #c5caba; }
html[lang="zh-CN"] .hero h1 { font-size: clamp(64px, 6.3vw, 86px); line-height: 1.22; letter-spacing: .025em; }
html[lang="zh-CN"] .serif em, html[lang="zh-CN"] .install-intro h2 em { font-style: normal; }
.hero-copy > p { max-width: 31em; color: #afb5aa; font-size: 16px; line-height: 1.9; text-wrap: pretty; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 0; margin-top: 29px; font: 11px var(--sans); letter-spacing: .025em; color: var(--dim); }
.hero-meta span + span::before { content: "·"; padding: 0 12px; color: #626c5e; }
.hero-stage { position: relative; min-width: 0; height: 478px; display: grid; place-items: center; overflow: hidden; isolation: isolate; border: 1px solid #c5e2a319; border-radius: 10px; background: radial-gradient(ellipse at 50% 42%, #bed77e16, transparent 62%), linear-gradient(150deg,#192017 0%,#0e120f 54%,#101610); }
.hero-stage::after { content: ""; position: absolute; left: 22%; right: 22%; bottom: 26%; height: 2px; background: #d0f84e; filter: blur(25px); opacity: .5; z-index: -1; }
.stage-orbit { position: absolute; width: 440px; height: 440px; border: 1px solid #d9ebb110; border-radius: 50%; z-index: -1; }
.orbit-two { width: 620px; height: 620px; }
.mk-hero { width: 53%; max-width: 285px; transform: translateY(-5px); filter: drop-shadow(0 24px 40px #0008); }
.hero-tag { position: absolute; font-size: 9px; color: #a4b097; letter-spacing: .13em; }
.hero-tag.tl { left: 25px; top: 23px; }
.hero-tag.br { right: 25px; bottom: 88px; font-size: 8px; color: #78836e; }
.stage-caption { position: absolute; left: 0; right: 0; bottom: 0; min-height: 60px; padding: 16px 24px; border-top: 1px solid var(--line); display: flex; align-items: center; gap: 10px; color: #b7c0ac; font-size: 11px; }
.stage-caption .mono { color: #77856b; font-size: 9px; letter-spacing: .12em; }
.stage-line { height: 1px; flex: 1; background: var(--line); margin: 0 8px; }
.value-strip { display: grid; grid-template-columns: repeat(3,1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 24px 0; }
.value-strip > div { display: flex; align-items: center; gap: 16px; justify-content: center; font-size: 13px; color: #bac0b4; }
.value-strip > div + div { border-left: 1px solid var(--line); }
.value-strip .mono { color: #7e8d6d; font-size: 10px; }
.sec { padding: 110px 0 0; }
.head { display: flex; align-items: baseline; gap: 20px; margin-bottom: 20px; }
.head .n { color: #91a377; font-size: 10px; flex-shrink: 0; }
.head h2 { font: 500 clamp(28px,3vw,38px)/1.35 var(--sans); letter-spacing: -.025em; text-wrap: balance; }
.head .en { margin-left: auto; color: #858e7f; font-size: 9px; letter-spacing: .1em; text-align: right; }
.lead { color: var(--dim); font-size: 15px; line-height: 1.85; max-width: 47em; margin-bottom: 38px; }
.demo-caption { text-align: right; color: #899380; font-size: 10px; margin: -9px 0 14px; }
.feat { display: grid; grid-template-columns: minmax(0,.9fr) minmax(0,1.1fr); align-items: center; gap: 80px; padding: 64px 0; border-top: 1px solid var(--line); }
.feat.rev { grid-template-columns: minmax(0,1.1fr) minmax(0,.9fr); }
.feat.rev .feat-copy { order: 2; }
.feat .kicker { color: #99a48b; font-size: 10px; letter-spacing: .09em; gap: 13px; }
.tag { font: 10px/1.4 var(--sans); color: #bdc5b2; border: 1px solid #a9c17d26; background: #b0cc8710; border-radius: 3px; padding: 4px 7px; letter-spacing: 0; }
.feat h3 { font-size: 48px; line-height: 1.04; letter-spacing: -.02em; margin: 21px 0 20px; }
.feat h3 em { color: #becba6; }
html[lang="zh-CN"] .feat h3 { font-size: 42px; line-height: 1.3; letter-spacing: .01em; }
.feat-copy > p { color: #aeb5a6; font-size: 14px; line-height: 1.85; max-width: 33em; }
.ticks-list { display: grid; gap: 10px; list-style: none; margin: 23px 0; }
.ticks-list li { position: relative; padding-left: 17px; color: #a5ae9c; font-size: 12px; line-height: 1.8; }
.ticks-list li::before { content: ""; position: absolute; left: 0; top: 10px; width: 4px; height: 4px; border: 1px solid #b1c395; }
.ticks-list b { font-weight: 500; color: #d5dccb; }
.feat .note { font: 11px/1.8 var(--sans); color: #939d89; margin: -4px 0 18px; }
.feat-demo { min-width: 0; pointer-events: none; }
.dm { box-shadow: 0 20px 60px #0003; }
.rv { opacity: 0; transform: translateY(16px); transition: opacity .65s ease, transform .65s ease; }
.rv.in { opacity: 1; transform: none; }
/* 黑板演示 */
.dm .bb-head { padding: .8em 1.1em; } .dm .bb-head h4 { font-size: 1em; } .dm .bb-head .eval { margin-left: auto; font-size: .62em; padding: .9em 1.2em; }
.dm .bb-rows { padding: 0 1.1em 1em; display: grid; gap: .5em; min-height: 17.4em; align-content: start; }
.dm .bb-row { grid-template-columns: auto 1fr auto; }
.dm .bb-row .sug { grid-column: 2 / span 2; font-size: .52em; color: var(--acid); letter-spacing: .06em; opacity: 0; }
.dm .bb-row .k { font-size: .76em; } .dm .bb-row .sm { font-size: .66em; } .dm .bb-row .rd { font-size: .56em; } .dm .ty { font-size: .56em; }
.dm .bb-chips .pill { font-size: .52em; }
.dm-toast { padding: 1em 1.3em; border-top: 1px solid var(--line); font-size: .64em; letter-spacing: .02em; color: #cfcfc9; min-height: 3.4em; background: #0d0e10; line-height: 1.6; }
.dm-toast .ok { color: var(--acid); font-weight: 400; } .dm-toast .no { color: var(--pink); font-weight: 400; }

/* 通用舞台 */
.dm-stage { position: relative; background: #0b0b0c; border: 1px solid var(--line); border-radius: 4px; aspect-ratio: 800 / 520; overflow: hidden;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px); background-size: 40px 40px; }
/* 编辑锁演示 */
.dm-wires { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.dm-stage .w { fill: none; stroke: var(--acid); stroke-width: 3; stroke-dasharray: 1; filter: drop-shadow(0 0 6px rgba(204,255,0,.5)); }
.dm-stage .w.bad { stroke: var(--pink); filter: drop-shadow(0 0 6px rgba(255,46,154,.5)); }
.dm-stage .w.steal { stroke: var(--fg); stroke-dasharray: .05 .04; stroke-width: 2.4; filter: none; }
.dm-agent { position: absolute; width: 26.8%; height: 14%; margin-left: 2.2%; border: 1px solid var(--line2); background: #101113; padding: .7em 1em; display: grid; align-content: center; }
.dm-agent b { font: 500 1em/1 var(--mono); } .dm-agent i { font: normal 400 .62em/1 var(--mono); letter-spacing: .14em; color: var(--dim); text-transform: uppercase; margin-top: .45em; }
.dm-agent em { position: absolute; left: 0; top: 108%; white-space: nowrap; font: normal 500 .68em/1 var(--mono); letter-spacing: .06em; color: var(--acid); }
.dm-agent.own { border-color: var(--acid); box-shadow: 0 0 24px rgba(204,255,0,.16); }
.dm-agent.bad { border-color: var(--pink); } .dm-agent.bad em { color: var(--pink); }
.dm-file { position: absolute; left: 60%; top: 31%; width: 37%; height: 37%; border: 1.5px solid var(--line2); background: #0d0e10; padding: 1.1em 1.3em; overflow: hidden; transition: border-color .2s; }
.dm-file .fh { display: flex; align-items: center; gap: .7em; font-size: .64em; letter-spacing: .16em; color: var(--dim); } .dm-file .fo { margin-left: auto; color: var(--acid); }
.dm-file .fn { font-size: 1.04em; margin-top: 1.2em; } .dm-file .fm { font-size: .64em; margin-top: .9em; color: var(--dim); line-height: 1.6; letter-spacing: .03em; }
.dm-file .hatch { position: absolute; inset: 0; opacity: 0; background: repeating-linear-gradient(135deg, rgba(255,46,154,.18) 0 8px, transparent 8px 18px); }
.dm-steps { position: absolute; left: 0; right: 0; bottom: 0; display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); background: rgba(11,11,12,.9); font-size: .62em; letter-spacing: .1em; color: var(--dim2); }
.dm-steps > div { padding: 1.2em .8em; } .dm-steps b { margin-right: .5em; font-weight: 500; }
.dm-steps > div.on { color: var(--acid); box-shadow: inset 0 2px 0 var(--acid); }
/* 车道演示 */
.dm-graph { position: absolute; left: 0; top: 0; width: 100%; height: 50%; }
.dm-stage .main, .dm-stage .lane, .dm-stage .merge { fill: none; stroke: rgba(236,236,230,.5); stroke-width: 2.4; stroke-dasharray: 1; }
.dm-stage .merge { stroke: var(--acid); stroke-width: 3; filter: drop-shadow(0 0 8px rgba(204,255,0,.6)); }
.dm-stage .nd { fill: #0a0a0b; stroke: var(--fg); stroke-width: 2; } .dm-stage .nd.mg { fill: var(--acid); stroke: var(--acid); filter: drop-shadow(0 0 10px rgba(204,255,0,.8)); }
.dm-stage .gt { font: 500 12px var(--mono); letter-spacing: .06em; fill: var(--dim); }
.dm-lchips .lcp { position: absolute; transform: translateY(-50%); font-size: .56em; letter-spacing: .12em; padding: .6em .8em; border: 1px solid var(--line2); color: var(--dim); background: #0d0e10; }
.dm-lchips .lcp.working { color: var(--fg); } .dm-lchips .lcp.checking { color: #ffb020; border-color: #ffb020; } .dm-lchips .lcp.landable { color: #0a0a0b; background: var(--acid); border-color: var(--acid); }
.dm-card { position: absolute; left: 6%; right: 6%; bottom: 4%; font-size: .86em; }
.dm-cb { padding: 1em 1.4em 1.2em; font-size: .9em; } .dm-cb .ct { font-size: 1.1em; } .dm-cb .ct b { font-weight: 500; color: var(--acid); } .dm-cb .ct em { font-family: var(--serif); color: var(--dim); }
.dm-cb .cm { display: flex; gap: 1.2em; margin: .6em 0; font-size: .66em; letter-spacing: .08em; color: var(--dim); } .dm-cb .cm .g { color: var(--acid); } .dm-cb .cm .r { color: var(--pink); }
.dm-cb .cc { font-size: .62em; line-height: 1.9; color: #cfcfc9; } .dm-cb .cc .ok { color: var(--acid); font-weight: 400; }
.dm-cb .cbtn { display: flex; gap: .7em; margin-top: .8em; } .dm-cb .cbtn .btn { font-size: .56em; }
.dm-cb .co { display: grid; gap: .4em; margin-top: .8em; font-size: .62em; } .dm-cb .co > div { padding: .6em .9em; border: 1px solid var(--line2); } .dm-cb .co > div.pk { border-color: var(--acid); }
.dm-cur { position: absolute; z-index: 5; pointer-events: none; filter: drop-shadow(0 4px 6px rgba(0,0,0,.6)); opacity: 0; }
/* 监督组演示 */
.dm-grp { position: absolute; left: 4%; top: 5%; right: 4%; display: flex; align-items: center; gap: 1.2em; padding: 1em 1.3em; border: 1px solid var(--line2); background: #0d0e10; font-size: .66em; letter-spacing: .1em; }
.dm-grp b { font-size: 1.4em; font-weight: 500; letter-spacing: .04em; } .dm-grp .gs { margin-left: auto; color: var(--acid); }
.dm-cards { position: absolute; left: 4%; right: 4%; top: 22%; display: grid; grid-template-columns: 1fr 1fr; gap: 3%; }
.dm-cards .ag { height: 100%; }
.dm-sig { position: absolute; left: 4%; right: 4%; bottom: 5%; padding: 1em 1.3em; border: 1px solid var(--line); font-size: .64em; letter-spacing: .04em; color: #cfcfc9; min-height: 3.6em; background: #0d0e10; }
.dm-sig .ok { color: var(--acid); } .dm-sig .no { color: var(--pink); }

/* Product workflow and capability overview. */
#conductor { border-top: 1px solid var(--line); padding-top: 78px; }
.pipe { display: grid; grid-template-columns: repeat(5,minmax(0,1fr)); gap: 30px; margin-top: 42px; }
.pipe > div { border-top: 1px solid #91a47655; padding-top: 20px; }
.pipe span { color: #8b9e72; font: 10px var(--mono); }
.pipe b { display: block; font-size: 18px; font-weight: 500; margin: 12px 0 8px; }
.pipe p { font-size: 12px; line-height: 1.8; color: var(--dim); }
.grid12 { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); margin-top: 34px; border-top: 1px solid var(--line); }
.gc { padding: 27px 30px 27px 0; border-bottom: 1px solid var(--line); }
.gc:nth-child(3n+2), .gc:nth-child(3n+3) { padding-left: 30px; border-left: 1px solid var(--line); }
.gc > span { color: #8c9d77; font-size: 10px; }
.gc b { display: block; font-size: 17px; font-weight: 500; margin: 13px 0 10px; }
.gc p { font-size: 13px; line-height: 1.8; color: var(--dim); }
.det-more { margin-top: 22px; }
/* The film is a quiet secondary introduction. */
.film { position: relative; aspect-ratio: 16 / 9; border: 1px solid var(--line2); border-radius: 8px; overflow: hidden; background: #080a08; }
.film video { width: 100%; height: 100%; display: block; object-fit: contain; }
.film-play { position: absolute; inset: 0 0 48px; border: 0; background: linear-gradient(#0001,#0004); display: grid; place-content: center; justify-items: center; gap: 16px; color: var(--fg); transition: opacity .3s; }
.film-play.gone { opacity: 0; visibility: hidden; pointer-events: none; }
.film-play .tri { width: 72px; height: 72px; display: grid; place-items: center; border: 1px solid #f2f5e8a0; border-radius: 50%; background: #0a100b90; backdrop-filter: blur(8px); transition: background .2s; }
.film-play .tri::after { content: ""; border-left: 16px solid var(--fg); border-top: 10px solid transparent; border-bottom: 10px solid transparent; margin-left: 5px; }
.film-play:hover .tri { background: #54712b80; }
.film-play em { font-style: normal; font: 12px var(--sans); }
.chapters { display: grid; grid-template-columns: repeat(8,minmax(0,1fr)); margin-top: 20px; border-top: 1px solid var(--line); gap: 10px; }
.chapters button { display: grid; gap: 5px; border: 0; background: transparent; padding: 14px 2px; text-align: left; color: var(--dim); }
.chapters button b { color: #aabb94; font: 10px var(--mono); }
.chapters button span { font: 12px var(--sans); }
.chapters button:hover, .chapters button.on { color: var(--fg); box-shadow: 0 -1px var(--acid); }
/* Installation is the primary conversion point. */
.install-sec { margin-top: 110px; padding: 64px; border-radius: 12px; background: #e8ecdf; color: #222a20; display: grid; grid-template-columns: minmax(0,.85fr) minmax(0,1.15fr); gap: 74px; }
.install-sec ::selection { background: #27311f; color: #e8ecdf; }
.install-sec :focus-visible { outline-color: #40552e; }
.install-intro .kicker { color: #68765c; font-size: 10px; letter-spacing: .1em; }
.install-intro h2 { font: 400 56px/1.03 var(--serif); letter-spacing: -.025em; margin: 25px 0 22px; }
.install-intro h2 em { color: #69765a; }
html[lang="zh-CN"] .install-intro h2 { font-size: 46px; line-height: 1.25; letter-spacing: .01em; }
.install-lead { font-size: 14px; line-height: 1.85; color: #606d56; }
.compatibility { display: grid; margin: 28px 0 23px; gap: 4px; font-size: 11px; color: #5e6a55; }
.compatibility > span:first-child { font-size: 9px; letter-spacing: .1em; margin-bottom: 3px; }
.compatibility strong { color: #33412b; font-size: 12px; font-weight: 500; }
.compatibility code { color: #33412b; font: 11px/1.7 var(--mono); }
.compatibility .compat-note { margin-top: 12px; font-size: 11px; line-height: 1.8; overflow-wrap: anywhere; }
.compatibility .text-link { justify-self: start; margin-top: 5px; }
.install-sec .text-link { color: #34412c; border-color: #71806460; font-size: 12px; }
.install-sec .text-link:hover { color: #111c07; border-color: #34412c; }
.install-steps { list-style: none; display: grid; gap: 28px; }
.install-steps li { display: grid; grid-template-columns: 26px minmax(0,1fr); gap: 12px; }
.step-number { color: #7b896e; font-size: 10px; padding-top: 5px; }
.install-steps h3 { font-size: 16px; font-weight: 500; line-height: 1.5; margin-bottom: 8px; }
.install-steps p, .terminal-install > p { font-size: 12px; color: #5c6852; line-height: 1.85; }
.command { border: 1px solid #78826842; border-radius: 5px; background: #f5f7ef; display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 13px 14px; }
.command code { font: 12px/1.7 var(--mono); color: #324225; user-select: text; overflow-wrap: anywhere; }
.command button { flex-shrink: 0; color: #3f502e; font-size: 11px; background: #e6eddc; border: 1px solid #a2b48b66; border-radius: 3px; padding: 5px 9px; }
.command button:hover { background: #d5e3c4; }
.terminal-install { margin: 28px 0 0 38px; padding-top: 18px; border-top: 1px solid #78826842; }
.terminal-install summary { font-size: 12px; cursor: pointer; color: #3b4b2e; }
.terminal-command { display: grid; grid-template-columns: minmax(0,1fr) auto; margin: 14px 0 10px; align-items: start; }
.terminal-command pre { white-space: pre-wrap; overflow-wrap: anywhere; min-width: 0; }
.terminal-command code { font-size: 11px; }
.install-config { margin: 22px 0 0 38px; font-size: 11px; color: #69755f; line-height: 1.8; }
.copy-status { font-size: 11px; margin-left: 38px; color: #455937; min-height: 20px; margin-top: 8px; }
/* Questions and closing links. */
#faq { display: grid; grid-template-columns: .7fr 1.3fr; gap: 74px; padding-bottom: 100px; }
#faq .head { display: block; }
#faq .head h2 { margin: 17px 0 14px; font-size: 30px; }
#faq .head .en { text-align: left; }
.faq { border-top: 1px solid var(--line); }
.faq details { padding: 23px 0; border-bottom: 1px solid var(--line); }
.faq summary { display: flex; align-items: baseline; justify-content: space-between; gap: 24px; list-style: none; cursor: pointer; font-size: 15px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font: 16px var(--mono); color: #9eb181; }
.faq details[open] summary::after { content: "−"; }
.faq p { font-size: 13px; line-height: 1.9; color: var(--dim); margin-top: 14px; max-width: 45em; }
.foot { border-top: 1px solid var(--line); padding: 40px 0 28px; }
.foot-top { display: flex; align-items: center; gap: 30px; }
.foot-top p { color: #939c88; font: 15px var(--serif); }
.foot-top > a:last-child { margin-left: auto; }
.foot-bot { display: flex; justify-content: space-between; gap: 24px; font-size: 10px; color: #86907c; margin-top: 38px; }
.foot-bot > div { display: flex; flex-wrap: wrap; gap: 26px; }
.foot-bot a:hover { color: var(--fg); }
.no-script { position: fixed; left: 20px; bottom: 20px; right: 20px; z-index: 100; background: var(--fg); color: #14220a; padding: 20px; }
.no-script a { text-decoration: underline; }
@media (max-width: 1340px) {
  .hero, .sec, .value-strip, .foot { margin-left: 40px; margin-right: 40px; }
  .hero { gap: 48px; }
  .feat { gap: 56px; }
  .install-sec { padding: 48px; gap: 50px; }
  .head .en { max-width: 150px; }
}
@media (max-width: 1000px) {
  .bar { gap: 30px; padding: 0 32px; }
  .bar nav { gap: 18px; }
  .bar-r { gap: 15px; }
  .hero { gap: 34px; padding-top: 66px; min-height: 600px; }
  .hero h1, html[lang="zh-CN"] .hero h1 { font-size: 60px; }
  .hero-stage { height: 402px; }
  .hero-copy > p { font-size: 14px; }
  .hero-cta .btn-cta, .hero-cta .btn-ghost { padding: 10px 14px; font-size: 12px; }
  .feat, .feat.rev { gap: 36px; grid-template-columns: minmax(0,1fr) minmax(0,1.05fr); }
  .feat h3 { font-size: 40px; }
  html[lang="zh-CN"] .feat h3 { font-size: 36px; }
  .feat-copy > p { font-size: 13px; }
  .feat .kicker { font-size: 9px; gap: 8px; }
  .feat .tag { font-size: 9px; }
  .pipe { gap: 18px; }
  .pipe b { font-size: 16px; }
  .install-sec { grid-template-columns: 1fr 1.1fr; gap: 36px; padding: 38px; }
  .install-intro h2 { font-size: 47px; }
  html[lang="zh-CN"] .install-intro h2 { font-size: 38px; }
  .install-steps h3 { font-size: 14px; }
  #faq { gap: 40px; }
}
@media (max-width: 780px) {
  html { scroll-padding-top: 88px; }
  .bar { min-height: 68px; padding: 0 24px; }
  .bar-logo { width: 82px; }
  .bar nav { display: none; position: absolute; left: 0; right: 0; top: 100%; padding: 16px 24px 24px; background: #11170f; border-bottom: 1px solid var(--line2); }
  .bar.menu-open nav { display: flex; flex-direction: column; align-items: stretch; gap: 0; }
  .bar nav a { display: block; padding: 12px 0; }
  .bar nav a.on { text-underline-offset: 4px; }
  .menu-toggle { display: block; }
  .menu-open .menu-toggle span:first-child { transform: translateY(2.5px) rotate(45deg); }
  .menu-open .menu-toggle span:last-child { transform: translateY(-2.5px) rotate(-45deg); }
  .hero, .sec, .value-strip, .foot { margin-left: 24px; margin-right: 24px; }
  .hero { grid-template-columns: 1fr; padding: 56px 0 40px; gap: 38px; }
  .hero h1, html[lang="zh-CN"] .hero h1 { font-size: clamp(56px,9vw,76px); }
  .hero-copy > p { font-size: 15px; max-width: 33em; }
  .hero-stage { height: 350px; }
  .mk-hero { width: 205px; }
  .hero-tag.br { bottom: 74px; }
  .stage-caption { min-height: 50px; }
  .value-strip { padding: 20px 0; }
  .value-strip > div { gap: 8px; font-size: 11px; }
  .value-strip .mono { font-size: 8px; }
  .sec { padding-top: 76px; }
  .head { gap: 12px; flex-wrap: wrap; }
  .head h2 { font-size: 28px; }
  .head .en { display: none; }
  .lead { font-size: 14px; margin-bottom: 28px; }
  .demo-caption { font-size: 9px; }
  .feat, .feat.rev { grid-template-columns: 1fr; gap: 32px; padding: 38px 0 48px; }
  .feat.rev .feat-copy { order: 0; }
  .feat-copy > p { max-width: 42em; font-size: 14px; }
  .feat h3 { font-size: 45px; }
  html[lang="zh-CN"] .feat h3 { font-size: 38px; }
  .feat h3 br { display: none; }
  .feat h3 em::before { content: " "; }
  .ticks-list { gap: 7px; margin: 20px 0; }
  .feat .kicker { font-size: 10px; }
  #conductor { padding-top: 60px; }
  .pipe { grid-template-columns: repeat(3,minmax(0,1fr)); gap: 28px 22px; }
  .grid12 { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .gc, .gc:nth-child(3n+2), .gc:nth-child(3n+3) { padding: 24px 22px 24px 0; border-left: 0; }
  .gc:nth-child(2n) { padding-left: 22px; border-left: 1px solid var(--line); }
  .chapters { grid-template-columns: repeat(4,minmax(0,1fr)); gap: 0 10px; }
  .install-sec { grid-template-columns: 1fr; gap: 38px; padding: 34px; margin-top: 76px; }
  .install-intro h2 { font-size: 53px; }
  html[lang="zh-CN"] .install-intro h2 { font-size: 42px; }
  .install-lead { max-width: 34em; }
  .compatibility { margin-top: 22px; }
  #faq { display: block; padding-bottom: 64px; }
  #faq .head h2 { margin: 14px 0 28px; }
  .foot-bot { flex-direction: column; gap: 20px; }
}
@media (max-width: 480px) {
  .bar-r { gap: 12px; }
  .nav-cta { display: none; }
  .hero h1, html[lang="zh-CN"] .hero h1 { font-size: 55px; }
  html[lang="en"] .hero h1 { font-size: clamp(47px,11.3vw,55px); }
  .hero .kicker { font-size: 10px; }
  .hero-meta { font-size: 10px; }
  .hero-stage { height: 320px; }
  .mk-hero { width: 184px; }
  .hero-tag.tl { left: 19px; }
  .hero-tag.br { right: 19px; font-size: 7px; }
  .stage-caption { padding-left: 18px; padding-right: 18px; font-size: 10px; }
  .value-strip > div { display: grid; gap: 5px; justify-content: start; padding-left: 14px; }
  .value-strip > div:first-child { padding-left: 0; }
  .value-strip > div { font-size: 10px; }
  .head h2 { font-size: 25px; }
  .head { align-items: flex-start; }
  .head .n { padding-top: 8px; }
  html[lang="zh-CN"] .feat h3 { font-size: 34px; }
  .feat h3 { font-size: 39px; }
  .feat h3 br { display: initial; }
  .pipe { grid-template-columns: 1fr 1fr; }
  .gc b { font-size: 15px; }
  .gc p { font-size: 12px; }
  .gc, .gc:nth-child(3n+2), .gc:nth-child(3n+3) { padding-right: 15px; }
  .gc:nth-child(2n) { padding-left: 15px; padding-right: 0; }
  .film-play { bottom: 32px; gap: 9px; }
  .film-play .tri { width: 46px; height: 46px; }
  .film-play .tri::after { border-left-width: 11px; border-top-width: 7px; border-bottom-width: 7px; }
  .film-play em { font-size: 10px; }
  .chapters button span { font-size: 10px; }
  .install-sec { padding: 28px 22px; }
  .install-intro h2 { font-size: 48px; }
  html[lang="zh-CN"] .install-intro h2 { font-size: 37px; }
  .install-steps li { grid-template-columns: 20px minmax(0,1fr); gap: 8px; }
  .command { padding: 10px; gap: 8px; }
  .command code { font-size: 11px; }
  .command button { padding: 5px 7px; font-size: 10px; }
  .terminal-install, .install-config, .copy-status { margin-left: 28px; }
  .terminal-command { grid-template-columns: 1fr; }
  .terminal-command button { justify-self: start; }
  .faq summary { font-size: 14px; }
  .foot-top { flex-wrap: wrap; gap: 20px; }
  .foot-top p { order: 3; width: 100%; font-size: 14px; }
  .foot-bot > div { gap: 20px; }
  .dm .bb-head { flex-wrap: wrap; gap: .4em; }
  .dm .bb-head .eval { padding: .65em .7em; }
  .dm .bb-row { grid-template-columns: auto minmax(0,1fr) auto; }
  .dm .bb-row .k { overflow-wrap: anywhere; }
  .dm .bb-row .sm { overflow-wrap: anywhere; }
  .dm .bb-chips { flex-wrap: wrap; }
  .dm-toast { overflow-wrap: anywhere; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .rv { opacity: 1; transform: none; }
  .btn-cta:hover { transform: none; }
}