@font-face{font-family:"Liuhen Serif";src:url("/fonts/liuhen-serif-subset.woff2") format("woff2");font-weight:500;font-style:normal;font-display:swap}
:root{--paper:#f8f5ed;--white:#fffdf8;--ink:#252a22;--muted:#5d6457;--faint:#7b8273;--green:#245b3f;--green-2:#2f7350;--deep:#173d29;--lime:#d5ebac;--lime-2:#e7f2cf;--line:#dcded0;--line-2:#c9d1bc;--soft:#edf0e5;--sage:#e6ebdc;--shadow:0 1px 2px #1f2d1a0f,0 12px 32px -8px #1f2d1a24;--shadow-lg:0 2px 4px #1f2d1a0d,0 30px 70px -20px #1f2d1a40;--serif:"Liuhen Serif","Noto Serif SC","Source Han Serif SC","Songti SC",serif;--sans:"PingFang SC","Microsoft YaHei UI","Microsoft YaHei",system-ui,sans-serif}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:96px}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}
button,input{font:inherit;color:inherit}
a{color:inherit;text-decoration:none}
button{cursor:pointer}
button:disabled{cursor:wait;opacity:.65}
button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #769d42;outline-offset:4px;border-radius:4px}
[hidden]{display:none!important}
::selection{background:var(--lime)}
.ico{width:20px;height:20px;flex:none;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.wrap{width:min(1200px,calc(100% - 80px));margin:auto}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:fixed;left:20px;top:-90px;z-index:90;background:var(--white);padding:10px 16px;border-radius:6px;box-shadow:var(--shadow)}
.skip:focus{top:10px}
main:focus{outline:none}

/* review strip */
.plain{border:0;background:transparent;padding:0;text-decoration:underline;text-underline-offset:4px}

/* header */
.top{position:sticky;top:0;z-index:15;background:var(--paper);border-bottom:1px solid var(--line)}
.nav{height:76px;display:flex;align-items:center;justify-content:space-between;gap:40px}
.brand{display:flex;align-items:center;gap:11px;font-size:22px;font-weight:700;letter-spacing:2px}
.mark{width:34px;height:34px;flex:none}
.navlinks{display:flex;align-items:center;gap:32px;font-size:15px}
.navlinks a{color:#3e4539;transition:color .2s}
.navlinks a:hover{color:var(--green)}
.menu{display:none;border:1px solid var(--line-2);border-radius:8px;background:var(--white);width:44px;height:44px;place-items:center}
.menu .ico{width:22px;height:22px}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:50px;border:1px solid var(--green);border-radius:8px;padding:12px 24px;background:var(--green);color:var(--white);font-size:15px;font-weight:600;box-shadow:0 1px 0 #ffffff26 inset,0 8px 20px -10px #245b3fa6;transition:transform .2s,background .2s,box-shadow .2s}
.btn:hover{background:#1c4b33;transform:translateY(-1px);box-shadow:0 1px 0 #ffffff26 inset,0 12px 26px -10px #245b3fbf}
.btn .ico{width:18px;height:18px}
.btn.ghost{background:transparent;color:var(--green);border-color:#b4bfa7;box-shadow:none}
.btn.ghost:hover{background:var(--soft)}
.nav .btn{min-height:42px;padding:8px 18px;font-size:14px}

/* type */
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;letter-spacing:2px;color:var(--green);font-weight:600}
.eyebrow:before{content:"";width:24px;height:1px;background:currentColor}
.pill-eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 14px 6px 8px;border:1px solid var(--line-2);border-radius:999px;background:var(--white);font-size:13px;color:#3f4a38;box-shadow:0 1px 2px #1f2d1a0d}
.pill-eyebrow b{background:var(--green);color:var(--white);font-size:12px;font-weight:600;border-radius:999px;padding:1px 10px}
h1,h2,h3{letter-spacing:0}
.micro{font-size:13px;color:var(--muted);line-height:1.8}

/* hero */
.hero-band{position:relative;overflow:hidden}
.hero-band:before{content:"";position:absolute;inset:0;background:radial-gradient(42% 60% at 78% 38%,#dcebc0a6,transparent 70%),radial-gradient(30% 40% at 6% 90%,#e8eedb,transparent 70%);pointer-events:none}
.hero-band:after{content:"";position:absolute;right:0;top:0;width:58%;height:100%;background-image:radial-gradient(#245b3f1f 1px,transparent 1.2px);background-size:22px 22px;-webkit-mask-image:radial-gradient(60% 60% at 60% 45%,#000,transparent 75%);mask-image:radial-gradient(60% 60% at 60% 45%,#000,transparent 75%);pointer-events:none}
.hero{position:relative;z-index:1;padding:84px 0 92px;display:grid;grid-template-columns:minmax(0,.86fr) minmax(0,1.14fr);align-items:center;gap:56px}
.hero h1{font-family:var(--serif);font-size:clamp(44px,4.4vw,64px);line-height:1.32;font-weight:500;margin:26px 0 24px}
.hero h1 em{font-style:normal;color:var(--green);white-space:nowrap;background:linear-gradient(transparent 68%,#d5ebacd9 68%,#d5ebacd9 92%,transparent 92%)}
.lede{font-size:17px;color:var(--muted);max-width:460px;line-height:1.95;margin:0}
.actions{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin:34px 0 22px}
.hero-meta{display:flex;flex-wrap:wrap;gap:8px 20px;font-size:13px;color:var(--muted);margin:0;padding:0;list-style:none}
.hero-meta li{display:flex;align-items:center;gap:7px}
.hero-meta .ico{width:16px;height:16px;color:var(--green)}

/* hero composition */
.hero-art{position:relative;min-width:0;padding:10px 96px 40px 0}
/* keep interactive demo content clear of the overlapping phone */
.hero-art .app-main{padding-right:128px}
.app-window{position:relative;z-index:2;background:var(--white);border:1px solid #c9d2bd;border-radius:14px;box-shadow:var(--shadow-lg);overflow:hidden}
.win-bar{display:flex;align-items:center;justify-content:space-between;height:40px;padding:0 6px 0 14px;background:#f0f2e9;border-bottom:1px solid var(--line)}
.win-title{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted)}
.win-title .mark{width:18px;height:18px}
.win-ctrl{display:flex}
.win-ctrl i{width:34px;height:28px;display:grid;place-items:center;position:relative}
.win-ctrl i:before{content:"";width:10px;height:1px;background:#8d957f}
.win-ctrl i:nth-child(2):before{height:9px;width:9px;border:1px solid #8d957f;background:none}
.win-ctrl i:nth-child(3):before{width:12px;height:1px;transform:rotate(45deg);box-shadow:none}
.win-ctrl i:nth-child(3):after{content:"";position:absolute;width:12px;height:1px;background:#8d957f;transform:rotate(-45deg)}
.app-body{display:grid;grid-template-columns:92px minmax(0,1fr);min-height:410px}
.app-rail{background:#f3f5ec;border-right:1px solid var(--line);padding:16px 10px;display:flex;flex-direction:column;gap:4px}
.rail-item{display:flex;flex-direction:column;align-items:center;gap:3px;padding:9px 4px;border-radius:9px;font-size:11px;color:var(--faint)}
.rail-item .ico{width:19px;height:19px}
.rail-item.active{background:#e0e9d3;color:var(--green);font-weight:600}
.rail-spacer{flex:1}
.app-main{padding:22px 24px 20px;min-width:0}
.app-head{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}
.app-kicker{font-size:11px;color:var(--faint);letter-spacing:1px}
.app-title{font-family:var(--serif);font-size:20px;font-weight:500;line-height:1.5}
.app-badge{display:inline-flex;align-items:center;gap:5px;white-space:nowrap;font-size:11px;color:var(--green);background:var(--lime-2);border:1px solid #cfe0b1;border-radius:999px;padding:3px 10px}
.app-badge .ico{width:13px;height:13px;stroke-width:2.2}
.searchbox{display:flex;align-items:center;background:var(--white);border:1px solid #b7c2a9;border-radius:9px;overflow:hidden;margin:14px 0 10px;box-shadow:0 0 0 4px #d5ebac59}
.searchbox>.ico{margin-left:12px;color:var(--faint);width:18px;height:18px}
.searchbox input{width:100%;min-width:0;padding:10px;border:0;background:transparent;outline:0;font-size:14px}
.searchbox button{flex-shrink:0;border:0;background:var(--green);color:var(--white);font-size:13px;font-weight:600;padding:0 18px;min-height:44px;margin:0}
.filters{display:flex;gap:6px;flex-wrap:wrap;margin:0 0 10px}
.filter{display:inline-flex;align-items:center;gap:5px;font-size:11px;color:var(--muted);border:1px solid var(--line);background:#f6f7f0;border-radius:6px;padding:3px 9px}
.filter .ico{width:13px;height:13px}
.tags{display:flex;gap:6px;flex-wrap:wrap;align-items:center;margin:0 0 6px}
.tags-label{font-size:11px;color:var(--faint);margin-right:2px}
.chip{border:1px solid var(--line-2);border-radius:999px;background:transparent;font-size:12px;padding:5px 12px;color:var(--muted);min-height:32px;transition:background .2s,border-color .2s}
.chip:hover{background:var(--soft)}
.chip[aria-pressed="true"]{background:var(--green);border-color:var(--green);color:var(--white)}
.result-meta{font-size:11px;color:var(--faint);margin:12px 0 6px;display:flex;justify-content:space-between}
.result{display:grid;grid-template-columns:34px minmax(0,1fr);gap:12px;padding:12px;border:1px solid var(--line);border-radius:10px;background:#fbfaf4;margin:8px 0;font-size:13px;transition:border-color .2s,background .2s}
.result:first-child{border-color:#b9cba0;background:#f5f8ec}
.avatar{width:34px;height:34px;border-radius:9px;display:grid;place-items:center;font-size:14px;font-weight:600;color:var(--white);background:#6f9a5b;flex:none}
.avatar.a1{background:#4f7f62}.avatar.a2{background:#a07c4f}.avatar.a3{background:#5d7891}.avatar.a4{background:#8a6f93}
.result-top{display:flex;justify-content:space-between;gap:10px;font-size:12px}
.result-top b{font-weight:600}
.result-top time{color:var(--faint);white-space:nowrap}
.result p{margin:3px 0 4px;line-height:1.7;color:#323a2e}
.result small{font-size:11px;color:var(--faint)}
.result mark{background:#dcecb4;color:var(--deep);padding:0 3px;border-radius:3px}
.result-empty{font-size:13px;color:var(--muted);padding:18px 4px}
.phone{position:absolute;z-index:3;right:0;bottom:0;width:200px;background:#1f2a1f;border-radius:30px;padding:8px;box-shadow:var(--shadow-lg),0 0 0 1px #0000000d}
.phone-screen{background:var(--paper);border-radius:23px;overflow:hidden;height:392px;display:flex;flex-direction:column}
.phone-status{height:24px;display:flex;justify-content:center;align-items:center}
.phone-status i{width:58px;height:16px;background:#1f2a1f;border-radius:10px}
.phone-head{display:flex;align-items:center;gap:8px;padding:6px 12px 9px;border-bottom:1px solid var(--line);font-size:12px;font-weight:600}
.phone-head .ico{width:15px;height:15px;color:var(--muted)}
.phone-head span{margin-left:auto;font-size:9px;font-weight:500;color:var(--green);background:var(--lime-2);border-radius:999px;padding:1px 7px}
.phone-body{padding:10px 10px 0;display:flex;flex-direction:column;gap:7px;font-size:11px;line-height:1.6}
.pdate{align-self:center;font-size:9px;color:var(--faint);background:#eceee4;border-radius:999px;padding:0 8px}
.pb{max-width:84%;background:var(--white);border:1px solid #dfe3d4;border-radius:10px 10px 10px 3px;padding:6px 9px}
.pb.mine{align-self:flex-end;background:#d7e7bf;border-color:#c8dcab;border-radius:10px 10px 3px 10px}
.pb.media{padding:3px;width:76%}
.pb.media svg{display:block;width:100%;height:auto;border-radius:7px}
.voice{display:flex;align-items:center;gap:6px;width:62%}
.voice .play{width:18px;height:18px;border-radius:50%;background:var(--green);display:grid;place-items:center;flex:none}
.voice .play svg{width:8px;height:8px;fill:var(--white)}
.wave{display:flex;align-items:center;gap:2px;flex:1;height:16px}
.wave i{width:2px;border-radius:2px;background:#7d9a68}
.voice small{font-size:9px;color:var(--faint)}
.float-card{position:absolute;z-index:4;left:-34px;bottom:-12px;display:flex;align-items:center;gap:12px;background:var(--white);border:1px solid #cdd6c0;border-radius:12px;padding:12px 16px 12px 12px;box-shadow:var(--shadow)}
.float-card .tile{width:38px;height:38px;border-radius:9px;background:var(--lime-2);color:var(--green);display:grid;place-items:center}
.float-card b{display:block;font-size:13px}
.float-card small{display:block;font-size:11px;color:var(--faint)}

/* trust strip */
.trust{position:relative;z-index:1;display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:14px;background:var(--white);box-shadow:0 1px 2px #1f2d1a0a}
.trust div{display:flex;gap:14px;padding:22px 24px;align-items:flex-start}
.trust div+div{border-left:1px solid var(--line)}
.trust .tile{width:40px;height:40px;border-radius:10px;background:var(--sage);color:var(--green);display:grid;place-items:center;flex:none}
.trust b{display:block;font-size:15px;font-weight:600;line-height:1.5}
.trust span{display:block;font-size:13px;color:var(--muted);line-height:1.6;margin-top:2px}

/* sections */
.section{padding:112px 0}
.heading-row{display:flex;justify-content:space-between;align-items:end;gap:40px;margin-bottom:48px}
.section h2{font-family:var(--serif);font-size:40px;line-height:1.45;font-weight:500;margin:16px 0 0}
.heading-row>p{color:var(--muted);max-width:400px;font-size:16px;margin:0}
.uses{display:grid;grid-template-columns:1.15fr .85fr;grid-template-rows:auto auto;gap:20px}
.feature{position:relative;border:1px solid var(--line);padding:34px;background:var(--white);border-radius:16px;overflow:hidden;display:flex;flex-direction:column;transition:border-color .25s,box-shadow .25s}
.feature:hover{border-color:#bccaa9;box-shadow:var(--shadow)}
.feature h3{font-family:var(--serif);font-weight:500;font-size:26px;line-height:1.5;margin:10px 0 10px}
.feature p{font-size:15px;color:var(--muted);margin:0;max-width:440px}
.num{font-size:12px;letter-spacing:2px;color:var(--green);font-weight:600}
.feature.large{grid-row:span 2;background:linear-gradient(180deg,#eef1e6,#e6ebdc)}
.feature-link{display:inline-flex;align-items:center;gap:6px;color:var(--green);font-size:14px;font-weight:600;margin-top:22px}
.feature-link .ico{width:16px;height:16px;transition:transform .2s}
.feature-link:hover .ico{transform:translateX(3px)}
.feature .visual{margin-top:26px}
.feature.large .visual{flex:1;display:flex;margin-top:30px}
.feature.large .reader{display:flex;flex-direction:column}
.feature.large .reader-body{flex:1;justify-content:flex-end}
/* reader visual */
.reader{width:100%;background:var(--white);border:1px solid #d3dbc6;border-radius:14px;box-shadow:var(--shadow);overflow:hidden}
.reader-head{display:flex;align-items:center;gap:10px;padding:12px 16px;border-bottom:1px solid var(--line)}
.reader-head b{display:block;font-size:14px}
.reader-head small{display:block;font-size:11px;color:var(--faint);line-height:1.4}
.reader-tools{margin-left:auto;display:flex;gap:6px;color:var(--faint)}
.reader-tools span{width:30px;height:30px;border:1px solid var(--line);border-radius:8px;display:grid;place-items:center}
.reader-tools .ico{width:15px;height:15px}
.reader-body{padding:16px 18px 20px;display:flex;flex-direction:column;gap:10px;background:#fbfaf5}
.chatdate{align-self:center;font-size:11px;color:var(--faint);background:#eef0e6;border-radius:999px;padding:1px 12px}
.bubble{max-width:78%;font-size:14px;line-height:1.7;background:var(--white);border:1px solid #dde2d1;border-radius:12px 12px 12px 4px;padding:9px 14px}
.bubble.mine{align-self:flex-end;background:#d7e7bf;border-color:#c8dcab;border-radius:12px 12px 4px 12px}
.bubble.media{padding:4px;width:38%}
.bubble.media svg{display:block;width:100%;height:auto;border-radius:9px}
.bubble.voice{display:flex;align-items:center;gap:10px;width:46%;padding:9px 12px}
.bubble.voice .play{width:24px;height:24px}
.bubble.voice .play svg{width:10px;height:10px}
.bubble.voice .wave{height:20px}
.bubble.voice small{font-size:11px}
.reader-foot{font-size:11px;color:var(--faint);text-align:center;padding:0 0 2px}
/* search visual */
.search-vis{border:1px solid var(--line);border-radius:12px;background:#fbfaf5;padding:14px}
.sv-field{display:flex;align-items:center;gap:8px;border:1px solid #b9c5aa;border-radius:8px;background:var(--white);padding:7px 10px;font-size:13px}
.sv-field .ico{width:16px;height:16px;color:var(--faint)}
.sv-field mark{background:#dcecb4;color:var(--deep);border-radius:3px;padding:0 3px}
.sv-pills{display:flex;gap:6px;flex-wrap:wrap;margin:10px 0 12px}
.sv-hist{display:flex;align-items:flex-end;gap:5px;height:56px;padding:0 2px;border-bottom:1px solid var(--line-2)}
.sv-hist i{flex:1;background:#cddcb8;border-radius:3px 3px 0 0}
.sv-hist i.hot{background:var(--green)}
.sv-axis{display:flex;justify-content:space-between;font-size:10px;color:var(--faint);margin-top:4px}
/* export visual */
.bundle{display:flex;align-items:center;gap:14px;border:1px solid var(--line);border-radius:12px;background:#fbfaf5;padding:16px}
.zip{display:flex;flex-direction:column;align-items:center;gap:6px;font-size:11px;color:var(--muted);flex:none;width:76px;text-align:center;line-height:1.4}
.zip .tile{width:48px;height:56px;border-radius:8px;background:var(--green);color:var(--lime);display:grid;place-items:center;box-shadow:0 8px 16px -8px #245b3f99}
.zip .tile .ico{width:24px;height:24px}
.bundle>.ico{color:#94a77f;width:18px;height:18px}
.tree{list-style:none;margin:0;padding:0 0 0 12px;border-left:1px dashed #b8c4a8;font-size:12px;flex:1;min-width:0}
.tree li{display:flex;align-items:center;gap:7px;padding:3px 0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tree .ico{width:15px;height:15px;color:var(--green)}
.tree em{font-style:normal;font-size:10px;background:var(--lime-2);color:var(--green);border-radius:999px;padding:0 7px}

/* how */
.flow-section{background:linear-gradient(180deg,#e9ede1,#eef1e7);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.arch{display:grid;grid-template-columns:minmax(0,1.05fr) 104px minmax(0,1fr);align-items:stretch;background:#f7f8f1;border:1px solid var(--line-2);border-radius:18px;padding:24px;box-shadow:var(--shadow)}
.zone{border:1.5px dashed #a9b896;border-radius:14px;padding:18px;background:#fbfbf6}
.zone.remote{border-color:#c7cfba;background:transparent}
.zone-label{display:flex;align-items:center;gap:8px;font-size:12px;letter-spacing:1px;color:var(--green);font-weight:600;margin-bottom:16px}
.zone.remote .zone-label{color:var(--muted)}
.zone-label .ico{width:16px;height:16px}
.zone-row{display:flex;align-items:center;gap:0}
.anode{flex:1;min-width:0;background:var(--white);border:1px solid #cdd5c1;border-radius:12px;padding:16px 14px;text-align:center}
.anode .tile{width:44px;height:44px;margin:0 auto 10px;border-radius:12px;background:var(--sage);color:var(--green);display:grid;place-items:center}
.anode .tile .ico{width:22px;height:22px}
.anode b{display:block;font-size:15px;font-weight:600}
.anode small{display:block;font-size:12px;color:var(--muted);line-height:1.6;margin-top:2px}
.anode.primary{background:var(--green);border-color:var(--green);color:var(--white);box-shadow:0 14px 30px -14px #245b3fcc}
.anode.primary .tile{background:#ffffff1f;color:var(--lime)}
.anode.primary small{color:#cfe0c4}
/* connectors: line + arrowhead drawn with pseudo elements; label sits above the line */
.link{position:relative;flex:none;width:68px;align-self:stretch;display:flex;align-items:center;justify-content:center;font-size:11px;color:var(--faint);line-height:1.4;white-space:nowrap}
.link:before{content:"";position:absolute;left:6px;right:12px;top:50%;height:1.5px;background:var(--line-2)}
.link:after{content:"";position:absolute;right:5px;top:calc(50% - 4px);border:4.5px solid transparent;border-left:7px solid #9aaa85;border-right:0}
.link span{position:relative;transform:translateY(-15px)}
.link.sync:before{left:10px;right:16px;height:2px;background:repeating-linear-gradient(90deg,#8ea676 0 6px,transparent 6px 11px)}
.link.sync:after{right:9px}
.link.sync span{transform:translateY(-20px);background:var(--lime-2);color:var(--green);border:1px solid #cfe0b1;border-radius:999px;padding:2px 10px;font-weight:600}
.trust p{margin:0}
.arch-note{display:flex;gap:10px;align-items:center;font-size:13px;color:var(--muted);margin:16px 4px 0}
.arch-note .ico{width:16px;height:16px;color:var(--green)}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:56px}
.step{background:var(--white);border:1px solid var(--line);border-radius:14px;padding:26px}
.step-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}
.step-top b{font-family:var(--serif);font-weight:500;font-size:30px;line-height:1;color:#8aa073}
.step-top .tile{width:40px;height:40px;border-radius:10px;background:var(--sage);color:var(--green);display:grid;place-items:center}
.step h3{font-size:17px;font-weight:600;margin:0 0 6px}
.step p{font-size:14px;color:var(--muted);margin:0}

/* guides */
.read-row{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.read-card{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:16px;padding:28px;background:var(--white);transition:border-color .25s,box-shadow .25s,transform .25s}
.read-card:hover{border-color:#b6c6a1;box-shadow:var(--shadow);transform:translateY(-2px)}
.read-card .tile{width:44px;height:44px;border-radius:12px;background:var(--sage);color:var(--green);display:grid;place-items:center;margin-bottom:20px}
.read-card .category{font-size:12px;color:var(--green);letter-spacing:1px;font-weight:600}
.read-card h3{text-wrap:balance;font-family:var(--serif);font-size:22px;font-weight:500;line-height:1.55;margin:10px 0 10px}
.read-card p{color:var(--muted);font-size:14px;margin:0 0 22px;flex:1}
.read-card .read-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--green)}
.read-card .read-more .ico{width:16px;height:16px}

/* faq */
.faq{display:grid;grid-template-columns:.8fr 1.2fr;gap:90px;border-top:1px solid var(--line)}
.faq h2+p{margin-top:16px}
.faq-list details{border-bottom:1px solid var(--line);padding:20px 0}
.faq-list details:first-child{border-top:1px solid var(--line)}
.faq-list summary{cursor:pointer;font-size:17px;font-weight:600;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:24px}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary:after{content:"";flex:none;width:26px;height:26px;border-radius:50%;border:1px solid var(--line-2);background:linear-gradient(var(--green),var(--green)) center/10px 1.5px no-repeat,linear-gradient(var(--green),var(--green)) center/1.5px 10px no-repeat}
.faq-list details[open] summary:after{background:linear-gradient(var(--green),var(--green)) center/10px 1.5px no-repeat;border-color:#a9bb92}
.faq-list details p{color:var(--muted);font-size:15px;line-height:1.95;padding-right:40px;margin:12px 0 0}

/* closing */
.closing{background:radial-gradient(70% 120% at 100% 0%,#2f7350,transparent 60%),var(--green);color:var(--white);border-radius:20px;padding:60px;display:flex;align-items:center;justify-content:space-between;gap:40px;margin-bottom:80px;position:relative;overflow:hidden}
.closing .rings{position:absolute;right:-60px;top:-90px;width:420px;height:420px;color:#ffffff14;pointer-events:none}
.closing>div{position:relative}
.closing h2{font-family:var(--serif);font-size:36px;font-weight:500;line-height:1.5;margin:0 0 12px}
.closing p{font-size:15px;color:#d2dfc8;margin:0}
.closing .btn{position:relative;background:var(--lime);color:var(--deep);border-color:var(--lime);white-space:nowrap;box-shadow:0 12px 30px -12px #0006}
.closing .btn:hover{background:#e3f2c4}

/* footer */
.footer{border-top:1px solid var(--line);padding:40px 0 30px;color:var(--muted);font-size:14px}
.foot-top{display:flex;justify-content:space-between;gap:30px;align-items:start}
.footer .brand{font-size:20px;color:var(--ink)}
.footer .brand .mark{width:30px;height:30px}
.footer nav{display:flex;gap:28px;flex-wrap:wrap;padding-top:8px;align-items:center}
.footer nav a:hover,.footer nav button:hover{color:var(--green)}
.footer .plain{text-decoration:none;font-size:14px}
.foot-bottom{display:flex;justify-content:space-between;gap:25px;margin-top:32px;padding-top:20px;border-top:1px solid var(--line);font-size:12px}

/* docs */
.doc-head{padding:64px 0 32px}
.doc-head h1{font-family:var(--serif);font-size:48px;font-weight:500;line-height:1.4;margin:14px 0 10px}
.doc-head>p{color:var(--muted);font-size:16px;max-width:560px;margin:0}
.doc-head.compact{padding:28px 0 6px}
.doc-head.compact h1,.doc-head.compact>p,.doc-head.compact>.eyebrow{display:none}
.doc-head.compact .doc-search{margin-top:0}
.doc-search{max-width:600px;display:flex;gap:10px;align-items:center;border:1px solid #c5cdb8;background:var(--white);border-radius:10px;padding:4px 16px;margin:28px 0 12px;box-shadow:0 1px 2px #1f2d1a0a}
.doc-search .ico{color:var(--faint);width:18px;height:18px}
.doc-search input{border:0;background:transparent;min-width:0;width:100%;min-height:44px;outline:none;font-size:15px}
.doc-layout{display:grid;grid-template-columns:220px minmax(0,1fr);gap:56px;padding:28px 0 96px}
.doc-side{border-right:1px solid var(--line);padding-right:24px;font-size:14px;align-self:start;position:sticky;top:100px}
.doc-side b{display:block;font-size:12px;letter-spacing:1px;color:var(--faint);margin-bottom:12px}
.doc-side a{display:block;padding:9px 12px;margin:2px 0;border-radius:8px;color:#3e4539}
.doc-side a:hover,.doc-side a.active{color:var(--green);background:#e6ecda}
.doc-side a.active{font-weight:600}
.doc-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.doc-card{padding:28px;border:1px solid var(--line);border-radius:14px;background:var(--white);display:block;transition:border-color .2s,box-shadow .2s}
.doc-card:hover{border-color:#9cae85;box-shadow:var(--shadow)}
.doc-card small{font-size:12px;color:var(--green);font-weight:600;letter-spacing:1px}
.doc-card h2{font-family:var(--serif);font-size:22px;font-weight:500;margin:10px 0}
.doc-card p{font-size:14px;color:var(--muted);margin:0 0 14px}
.doc-card span{font-size:14px;color:var(--green);font-weight:600}
.notice{background:#e9efdc;border-left:3px solid #829d59;border-radius:0 8px 8px 0;padding:16px 20px;font-size:14px;margin:20px 0;color:#45543b}
.doc-article{max-width:740px}
.doc-article:focus{outline:none}
.doc-article h1{font-family:var(--serif);font-size:38px;font-weight:500;line-height:1.5;margin:12px 0}
.doc-article h2{font-family:var(--serif);font-size:24px;font-weight:500;border-top:1px solid var(--line);padding-top:24px;margin-top:36px}
.doc-article p,.doc-article li{font-size:16px;color:#4b5345;line-height:1.95}
.doc-article li{padding-left:6px;margin:12px 0}
.doc-article ul,.doc-article ol{padding-left:24px}
.crumb{font-size:13px;color:var(--muted)}
.article-meta{font-size:13px;color:var(--faint)}
.doc-pager{margin-top:44px;padding:20px 0;border-top:1px solid var(--line);display:flex;justify-content:space-between;font-size:15px;color:var(--green);font-weight:600}
.no-results{padding:40px 20px;text-align:center;color:var(--muted);font-size:15px}
.no-results button{margin-top:15px}
.doc-error{border:1px dashed #aebc99;border-radius:12px;padding:36px}
.scroll-target{scroll-margin-top:96px}

/* dialogs */
dialog{border:1px solid #aebb9a;border-radius:16px;background:var(--paper);color:var(--ink);padding:36px;width:min(580px,calc(100% - 32px));max-height:88vh;overflow:auto;box-shadow:0 24px 100px #1d301b40}
dialog::backdrop{background:#172517a6}
dialog h2{font-family:var(--serif);font-size:28px;font-weight:500;margin:14px 0}
dialog p{font-size:15px;color:var(--muted)}
.dialog-close{float:right;border:1px solid var(--line-2);background:var(--white);border-radius:50%;width:38px;height:38px;font-size:20px;line-height:1}
.dialog-head{font-size:12px;letter-spacing:2px;color:var(--green);font-weight:600}
.download-box{border:1px solid #cbd3bd;border-radius:12px;padding:20px 22px;margin:20px 0;background:var(--white);display:flex;justify-content:space-between;align-items:center;gap:20px;font-size:15px}
.download-box small{font-size:13px;color:var(--muted)}
.status{padding:12px 16px;font-size:14px;background:#e9eddf;border-radius:8px;margin:15px 0;min-height:48px}
.status[data-tone="error"]{background:#f5e4da;color:#844429}
.site-map{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;text-align:center;margin:24px 0}
.site-map div{background:var(--soft);border:1px solid #c5d0b7;padding:16px;border-radius:10px;font-size:13px}
.site-map b{display:block;font-family:var(--serif);font-weight:500;font-size:22px;color:var(--green)}
.site-map small{display:block;font-size:12px;color:var(--muted);margin-top:7px}
.stage b{color:var(--green);font-size:12px;white-space:nowrap}

@media(min-width:1500px){.hero{gap:88px;padding:104px 0 112px}}
@media(max-width:1100px){.hero-art{padding-right:70px}.phone{width:180px}.phone-screen{height:350px}.float-card{left:-10px}.hero-art .app-main{padding-right:126px}}
@media(max-width:1000px){.wrap{width:calc(100% - 48px)}.hero{grid-template-columns:1fr;gap:48px;padding-top:64px}.lede{max-width:560px}.hero-art{max-width:720px;padding-right:70px}.navlinks{gap:20px}.trust{grid-template-columns:1fr 1fr}.trust div:nth-child(3){border-left:0}.trust div:nth-child(n+3){border-top:1px solid var(--line)}.arch{grid-template-columns:1fr;gap:0}.arch>.link.sync{width:auto;height:64px;flex-direction:row}.faq{gap:45px}.closing{padding:44px}.steps{gap:14px}.doc-layout{gap:30px;grid-template-columns:190px minmax(0,1fr)}}
@media(max-width:1000px){.arch>.link.sync:before{position:absolute;left:50%;top:0;width:2px;height:100%;background:repeating-linear-gradient(180deg,#8ea676 0 6px,transparent 6px 11px)}.arch>.link.sync:after{left:calc(50% - 4px);right:auto;top:auto;bottom:0;margin:0;border:4px solid transparent;border-top:7px solid #9aaa85;border-bottom:0}.arch>.link.sync span{position:relative;z-index:1;transform:none}}
@media(max-width:760px){
.wrap{width:calc(100% - 40px)}
.nav{height:64px;gap:12px}.brand{font-size:20px;gap:9px}.mark{width:30px;height:30px}
.menu{display:grid}
.navlinks{display:none;position:absolute;top:64px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:20px;flex-direction:column;gap:6px;align-items:stretch;box-shadow:0 18px 30px -20px #1f2d1a40}
.navlinks.open{display:flex}
.navlinks a{font-size:16px;padding:10px 4px;border-bottom:1px solid var(--line)}
.navlinks .btn{margin-top:10px}
.hero{padding:44px 0 56px;gap:36px}
.hero h1{font-size:40px;margin:20px 0 18px}
.pill-eyebrow{font-size:12px}
.lede{font-size:16px}
.actions{margin:28px 0 18px}.actions .btn{flex:1 1 100%}
.hero-art{padding:0}
.app-body{grid-template-columns:56px minmax(0,1fr);min-height:0}
.app-rail{padding:12px 6px}.rail-item span{display:none}.rail-item{padding:9px 0}
.app-main{padding:16px 14px}
.app-badge{display:none}
.filters{display:none}
.phone,.float-card{display:none}
.hero-art .app-main{padding-right:14px}
.result{grid-template-columns:30px minmax(0,1fr);gap:10px;padding:10px}
.avatar{width:30px;height:30px;font-size:13px}
.trust{grid-template-columns:1fr}.trust div+div{border-left:0;border-top:1px solid var(--line)}.trust div{padding:18px 20px}
.section{padding:72px 0}
.heading-row{display:block;margin-bottom:30px}
.section h2{font-size:30px;line-height:1.5}
.heading-row>p{margin-top:16px;font-size:15px}
.uses{grid-template-columns:1fr;gap:14px}
.feature{padding:24px;border-radius:14px}.feature h3{font-size:23px}
.bubble{font-size:13px}.bubble.media{width:66%}.bubble.voice{width:60%}
.zone-row{flex-direction:column}
.zone-row .anode{width:100%}
.zone-row .link{width:auto;height:52px;flex-direction:row}
.zone-row .link:before{position:absolute;left:50%;top:0;width:1.5px;height:100%;background:var(--line-2)}
.zone-row .link:after{left:calc(50% - 4px);right:auto;top:auto;bottom:0;margin:0;border:4px solid transparent;border-top:7px solid #9aaa85;border-bottom:0}
.zone-row .link span{position:relative;transform:none;background:#fbfbf6;padding:0 8px;margin-left:84px}
.zone.remote .zone-row .link span{background:#f7f8f1}
.arch{padding:14px}
.arch-note{flex-wrap:wrap;align-items:flex-start}.arch-note .feature-link{margin:0 0 0 26px!important;flex-basis:100%}
.zone{padding:14px}
.anode{display:grid;grid-template-columns:44px 1fr;gap:0 12px;text-align:left;align-items:center}
.anode .tile{margin:0;grid-row:span 2}
.steps{grid-template-columns:1fr;margin-top:36px}
.read-row{grid-template-columns:1fr;gap:14px}
.read-card{padding:24px}
.faq{grid-template-columns:1fr;gap:20px}.faq-list summary{font-size:16px}.faq-list details p{font-size:14px;padding-right:0}
.closing{padding:36px 26px;display:block;margin-bottom:48px}.closing h2{font-size:28px}.closing .btn{margin-top:26px;width:100%}.closing .rings{right:-160px;top:-140px}
.foot-top{display:block}.footer nav{margin-top:22px;gap:20px}
.foot-bottom{display:block}.foot-bottom span{display:block;margin:8px 0}
.doc-head{padding-top:40px}.doc-head h1{font-size:36px}.doc-head>p{font-size:15px}
.doc-layout{grid-template-columns:1fr;gap:26px;padding-top:12px}
.doc-side{position:static;border-right:0;border-bottom:1px solid var(--line);padding-right:0;padding-bottom:14px;display:flex;flex-wrap:wrap;gap:4px}
.doc-side b{width:100%;margin-bottom:6px}
.doc-side a{display:inline-block;margin:0;padding:6px 11px;font-size:13px;border:1px solid var(--line);background:var(--white)}
.doc-grid{grid-template-columns:1fr;gap:12px}
.doc-card{padding:22px}
.doc-article h1{font-size:30px}.doc-article p,.doc-article li{font-size:15px}
.doc-pager{gap:20px;font-size:14px}
dialog,.design-dialog{padding:26px}
.site-map{grid-template-columns:1fr;gap:8px}.site-map div{padding:12px;display:flex;gap:15px;align-items:center;text-align:left}.site-map b{font-size:19px}.site-map small{margin-top:0}
.dialog-close{width:34px;height:34px}.download-box{padding:16px}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}

/* Production additions (PSU-2.217 implementation) */
.wrap.page{padding:64px 0 96px}
.page-head h1{font-family:var(--serif);font-size:48px;font-weight:500;line-height:1.4;margin:14px 0 10px}
.page-head>p{color:var(--muted);font-size:16px;max-width:620px;margin:0}
.download-page{max-width:820px}
.download-page h2{font-family:var(--serif);font-size:24px;font-weight:500;border-top:1px solid var(--line);padding-top:24px;margin-top:40px}
.download-page p,.download-page li{font-size:16px;color:#4b5345;line-height:1.95}
.download-page .download-box{margin:28px 0 16px}
.download-page .actions{display:flex;gap:12px;flex-wrap:wrap;margin:16px 0}
.facts{display:grid;grid-template-columns:max-content 1fr;gap:8px 20px;margin:20px 0;font-size:15px}
.facts dt{color:var(--muted)}
.facts dd{margin:0;overflow-wrap:anywhere}
.code{background:var(--white);border:1px solid var(--line);border-radius:10px;padding:14px 16px;font:13px/1.7 ui-monospace,Consolas,monospace;overflow-x:auto;white-space:pre}
.navlinks a.btn,.navlinks a.btn:hover{color:var(--white);border-bottom-color:var(--green)}
.download-page p a,.facts a,.doc-article p a,.doc-article li a{color:var(--green);text-decoration:underline;text-underline-offset:4px}
.doc-article code,.download-page code{font:13px ui-monospace,Consolas,monospace;overflow-wrap:anywhere}
.manual-main{min-width:0}.manual-start{margin-bottom:24px}.doc-side{max-height:calc(100vh - 130px);overflow:auto}.manual-nav summary{font-weight:700;cursor:pointer;margin-bottom:12px}.manual-nav a{font-size:13px}
.manual-toc{border:1px solid var(--line);border-radius:10px;padding:16px 20px;background:var(--white);margin:24px 0}.manual-toc summary{cursor:pointer;font-weight:600}.manual-toc nav{display:flex;flex-direction:column;margin-top:8px}.manual-toc a{color:var(--green);font-size:14px;line-height:1.6;padding:5px 0}.manual-toc .depth-3{padding-left:16px}
.doc-article h2,.doc-article h3{scroll-margin-top:100px}.manual-baseline{font-size:13px!important;line-height:1.7!important;color:var(--muted)!important;border-left:3px solid var(--line);padding-left:14px}.manual-code{white-space:pre;overflow:auto;max-width:100%;background:var(--white);border:1px solid var(--line);border-radius:10px;padding:18px}.manual-code code{font:13px/1.8 Consolas,monospace;overflow-wrap:normal}
.manual-image{display:block;width:auto;max-width:100%;height:auto;border:1px solid var(--line);border-radius:10px;margin:24px auto}.manual-table{overflow:auto;border:1px solid var(--line);border-radius:10px;margin:24px 0}.manual-table table{width:100%;border-collapse:collapse;font-size:14px;line-height:1.8}.manual-table th,.manual-table td{text-align:left;vertical-align:top;padding:12px 14px;border-bottom:1px solid var(--line);min-width:110px}.manual-table th{background:var(--soft);font-weight:600}.manual-table tr:last-child td{border-bottom:0}
.manual-flow{margin:26px 0;border:1px solid var(--line);border-radius:12px;padding:20px;background:var(--white)}.manual-flow ol{padding:0;list-style:none;display:flex;flex-wrap:wrap;gap:12px}.manual-flow li{padding:8px 12px;margin:0;background:var(--sage);border-radius:8px;font-size:14px}.manual-flow li:not(:last-child):after{content:' →';margin-left:10px;color:var(--green)}.manual-flow figcaption{font-size:12px;color:var(--muted)}
@media(max-width:760px){.doc-side{display:block;max-height:none;overflow:visible}.manual-nav a{display:block;border:0;background:transparent}.manual-nav[open]{max-height:45vh;overflow:auto}.manual-nav summary{margin:0;padding:10px 0}.manual-code{padding:12px}.manual-code code{font-size:12px}.manual-toc{padding:12px 16px}.manual-flow ol{flex-direction:column}.manual-table th,.manual-table td{padding:9px 10px}}
@media(max-width:760px){.page-head h1{font-size:34px}.wrap.page{padding:40px 0 72px}.facts{grid-template-columns:1fr;gap:2px}.facts dd{margin-bottom:10px}
html:not(.js) .menu{display:none}html:not(.js) .navlinks{display:flex;position:static;flex-direction:row;flex-wrap:wrap;box-shadow:none;border:0;padding:8px 0;gap:4px 16px}html:not(.js) .nav{flex-wrap:wrap;height:auto}}