:root{
  --graphite:#090c0f;
  --panel:#0f1419;
  --panel-raised:#141b21;
  --line:#26313a;
  --line-soft:#1b252d;
  --text:#edf3f7;
  --muted:#94a2ad;
  --cyan:#55d6ff;
  --green:#9fda8a;
  --amber:#f1bf71;
  --violet:#c5a7ef;
  --danger:#ee7b78;
  --ui:"Segoe UI","Microsoft YaHei UI","Microsoft YaHei",sans-serif;
  --mono:Consolas,"Cascadia Mono","Microsoft YaHei UI",monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--graphite)}
body{margin:0;min-height:100dvh;color:var(--text);background:var(--graphite);font-family:var(--ui);line-height:1.68}
body::before{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.22;
  background-image:linear-gradient(var(--line-soft) 1px,transparent 1px),linear-gradient(90deg,var(--line-soft) 1px,transparent 1px);
  background-size:48px 48px;
  mask-image:linear-gradient(to bottom,#000,transparent 72%);
}
a{color:inherit;text-decoration:none}
img{max-width:100%}
button,a{font:inherit}
.console-shell{width:min(1240px,calc(100% - 44px));margin-inline:auto}
.site-header{position:sticky;top:0;z-index:50;border-bottom:1px solid var(--line);background:rgb(9 12 15/.9);backdrop-filter:blur(16px)}
.nav{min-height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:inline-flex;align-items:center;gap:11px;font-weight:800;letter-spacing:.02em;white-space:nowrap}
.brand img{display:block;width:32px;height:32px;object-fit:contain}
.nav-links{display:flex;align-items:center;gap:5px;font-family:var(--mono);font-size:13px;white-space:nowrap}
.nav-links a{padding:9px 13px;color:var(--muted);border:1px solid transparent}
.nav-links a:hover,.nav-links a[aria-current="page"]{color:var(--text);border-color:var(--line);background:var(--panel)}
.download-button{
  display:inline-flex;min-width:128px;min-height:44px;padding:0 20px;align-items:center;justify-content:center;
  border:1px solid var(--cyan);background:var(--cyan);color:#071014;font-weight:800;
  white-space:nowrap;word-break:keep-all;writing-mode:horizontal-tb;transition:transform .18s ease,box-shadow .18s ease;
}
.download-button:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgb(85 214 255/.17)}
.text-link{display:inline-flex;align-items:center;gap:8px;color:var(--cyan);font-family:var(--mono);font-size:13px;font-weight:700}
.text-link:hover span{transform:translate(2px,-2px)}
a:focus-visible,summary:focus-visible{outline:2px solid var(--amber);outline-offset:4px}
.syntax-label{margin:0;color:var(--muted);font:700 12px/1.4 var(--mono);letter-spacing:.08em;text-transform:uppercase}
.syntax-label span{color:var(--violet)}

.console-hero{padding:clamp(48px,7vw,92px) 0 clamp(70px,9vw,120px)}
.hero-grid{display:grid;grid-template-columns:minmax(280px,.72fr) minmax(600px,1.55fr);align-items:center;gap:clamp(30px,5vw,72px)}
.hero-copy{min-width:0}
.hero-copy h1{max-width:13ch;margin:16px 0 22px;font-size:clamp(42px,5.7vw,76px);line-height:1.02;letter-spacing:-.052em}
.hero-copy h1 em{color:var(--cyan);font-style:normal;font-weight:600}
.hero-lead{max-width:610px;margin:0;color:var(--muted);font-size:clamp(16px,1.5vw,19px)}
.hero-actions{display:flex;align-items:center;flex-wrap:wrap;gap:22px;margin-top:30px}
.hero-notes{display:flex;flex-wrap:wrap;gap:0;margin:30px 0 0;padding:0;list-style:none;color:var(--muted);font:12px var(--mono)}
.hero-notes li{padding:0 14px;border-left:1px solid var(--line)}
.hero-notes li:first-child{padding-left:0;border-left:0}
.diagnostic-console{min-width:0;border:1px solid #34424d;background:#0b1014;box-shadow:0 30px 90px rgb(0 0 0/.36)}
.console-titlebar{min-height:42px;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:14px;padding:0 14px;border-bottom:1px solid var(--line);background:#11171c;font:11px var(--mono)}
.console-titlebar strong{font-weight:500;color:var(--muted)}
.console-lights{display:flex;gap:6px}
.console-lights i{width:8px;height:8px;border-radius:50%;background:var(--danger)}
.console-lights i:nth-child(2){background:var(--amber)}
.console-lights i:nth-child(3){background:var(--green)}
.example-badge{padding:5px 8px;border:1px solid #594b2c;color:var(--amber);background:#1a1711;white-space:nowrap}
.console-body{display:grid;grid-template-columns:86px minmax(270px,1fr) minmax(210px,.78fr);min-height:530px}
.phase-rail{margin:0;padding:14px 0;list-style:none;border-right:1px solid var(--line);background:#0c1115}
.phase-rail li{position:relative;display:grid;justify-items:center;gap:4px;padding:14px 8px;color:#64727d;font:10px var(--mono)}
.phase-rail li:not(:last-child)::after{content:"";position:absolute;left:50%;bottom:-8px;width:1px;height:16px;background:var(--line)}
.phase-rail span{display:grid;width:28px;height:28px;place-items:center;border:1px solid var(--line);border-radius:50%}
.phase-rail strong{font-weight:500}
.phase-rail .is-current{color:var(--cyan)}
.phase-rail .is-current span{border-color:var(--cyan);box-shadow:0 0 0 4px rgb(85 214 255/.06)}
.event-pane{min-width:0;display:flex;flex-direction:column}
.event-pane>header,.client-preview figcaption{min-height:45px;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:0 14px;border-bottom:1px solid var(--line);font:11px var(--mono)}
.event-pane>header span{color:var(--green)}
.event-pane small,.client-preview small{color:#6d7b85}
.event-stream{margin:0;padding:8px 0;list-style:none}
.event-stream li{display:grid;grid-template-columns:42px minmax(0,1fr) auto;align-items:center;gap:10px;min-height:38px;padding:0 12px;border-bottom:1px solid var(--line-soft);font:10px var(--mono)}
.event-stream time{color:var(--violet)}
.event-stream code{overflow:hidden;color:#cbd5dc;font:inherit;white-space:nowrap;text-overflow:ellipsis}
.event-stream li:nth-child(2) code,.event-stream li:nth-child(5) code{color:var(--green)}
.event-stream li>span{color:#65747e;white-space:nowrap}
.config-preview{margin-top:auto;border-top:1px solid var(--line);background:#0f151a}
.config-preview>p{display:flex;justify-content:space-between;margin:0;padding:12px 14px;border-bottom:1px solid var(--line-soft);font:11px var(--mono)}
.config-preview>p span{color:var(--amber)}
.config-preview>p small{color:#68757f}
.config-preview ol{margin:0;padding:8px 14px 14px;list-style:none}
.config-preview li{display:grid;grid-template-columns:46px 1fr;gap:10px;padding:7px 0;font:10px var(--mono)}
.config-preview b{color:var(--cyan);font-weight:500}
.config-preview li span{color:var(--muted)}
.client-preview{min-width:0;align-self:center;margin:0;padding:0;border-left:1px solid var(--line);overflow:visible;transform:none}
.client-preview figcaption{border-top:1px solid var(--line);color:var(--amber)}
.client-preview img{display:block;width:100%;height:auto;min-height:0;max-height:none;margin:0;padding:0;object-fit:contain;object-position:center;clip-path:none;transform:none}

.signal-section,.preview-section,.pipeline-section,.insight-section,.faq-strip{padding:clamp(76px,10vw,138px) 0;border-top:1px solid var(--line-soft)}
.section-heading{display:grid;grid-template-columns:180px minmax(0,1fr) minmax(250px,.68fr);align-items:end;gap:30px;margin-bottom:44px}
.section-heading h2,.preview-copy h2,.insight-layout h2,.faq-layout h2{margin:0;font-size:clamp(32px,4.4vw,58px);line-height:1.08;letter-spacing:-.04em}
.section-heading>p:last-child{margin:0;color:var(--muted)}
.signal-board{border-top:1px solid var(--line)}
.signal-board article{display:grid;grid-template-columns:90px minmax(0,1fr) auto;align-items:center;gap:28px;padding:22px 0;border-bottom:1px solid var(--line);transition:background .18s ease,padding .18s ease}
.signal-board article:hover{padding-inline:14px;background:var(--panel)}
.signal-key{color:var(--violet);font:700 12px var(--mono)}
.signal-board h3{margin:0 0 5px;font-size:18px}
.signal-board p{margin:0;color:var(--muted)}
.signal-board a{color:var(--cyan);font:12px var(--mono);white-space:nowrap}

.preview-section{background:#0c1014}
.preview-layout{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(300px,.72fr);align-items:center;gap:clamp(48px,8vw,110px)}
.product-shot{align-self:center;margin:0;padding:0;overflow:visible;transform:none;border:1px solid var(--line);background:#080b0e}
.figure-label{display:flex;justify-content:space-between;gap:16px;padding:11px 14px;border-bottom:1px solid var(--line);color:var(--green);font:11px var(--mono)}
.figure-label small{color:var(--muted)}
.product-shot img{display:block;width:100%;height:auto;min-height:0;max-height:none;margin:0;padding:0;object-fit:contain;object-position:center;clip-path:none;transform:none}
.preview-copy h2{margin-top:16px}
.preview-copy>p:not(.syntax-label){margin:22px 0 0;color:var(--muted)}
.interface-legend{margin:32px 0}
.interface-legend>div{display:grid;grid-template-columns:92px 1fr;gap:18px;padding:14px 0;border-top:1px solid var(--line)}
.interface-legend>div:last-child{border-bottom:1px solid var(--line)}
.interface-legend dt{color:var(--amber);font:12px var(--mono)}
.interface-legend dd{margin:0;color:var(--muted);font-size:14px}

.compact-heading{grid-template-columns:180px 1fr}
.session-pipeline{display:grid;grid-template-columns:repeat(5,1fr);margin:0;padding:0;list-style:none;border:1px solid var(--line)}
.session-pipeline li{position:relative;min-width:0;padding:24px 20px 28px;border-right:1px solid var(--line);background:var(--panel)}
.session-pipeline li:last-child{border-right:0}
.session-pipeline li::after{content:"";position:absolute;top:34px;right:-5px;z-index:2;width:8px;height:8px;border:1px solid var(--cyan);background:var(--graphite);transform:rotate(45deg)}
.session-pipeline li:last-child::after{display:none}
.session-pipeline>li>span{color:var(--cyan);font:12px var(--mono)}
.session-pipeline h3{margin:34px 0 10px;font-size:17px}
.session-pipeline p{margin:0;color:var(--muted);font-size:14px}

.insight-section{background:var(--panel)}
.insight-layout{display:grid;grid-template-columns:minmax(220px,.55fr) minmax(0,1.45fr);gap:clamp(50px,9vw,120px)}
.insight-layout header>p:not(.syntax-label){color:var(--muted)}
.guide-index{margin:0;padding:0;list-style:none;border-top:1px solid var(--line)}
.guide-index li{display:grid;grid-template-columns:78px minmax(0,1fr) auto;align-items:center;gap:24px;padding:22px 0;border-bottom:1px solid var(--line)}
.guide-index>li>span{color:var(--violet);font:11px var(--mono)}
.guide-index h3{margin:0 0 5px;font-size:17px}
.guide-index p{margin:0;color:var(--muted);font-size:14px}
.guide-index a{color:var(--cyan);font:12px var(--mono);white-space:nowrap}

.faq-layout{display:grid;grid-template-columns:minmax(220px,.62fr) minmax(0,1.38fr);gap:clamp(50px,9vw,120px)}
.faq-layout>div:first-child>p:not(.syntax-label){color:var(--muted)}
.quick-checks{border-top:1px solid var(--line)}
details{border-bottom:1px solid var(--line)}
summary{position:relative;cursor:pointer;list-style:none;padding:20px 46px 20px 0;font-weight:700}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";position:absolute;right:12px;color:var(--cyan);font:18px var(--mono)}
details[open] summary::after{content:"−"}
details p{margin:0;padding:0 46px 22px 0;color:var(--muted)}

.final-console{padding:0 0 clamp(70px,9vw,110px)}
.final-line{display:grid;grid-template-columns:1fr auto;align-items:center;gap:30px;padding:30px;border:1px solid #38505d;background:#0b1419;box-shadow:inset 4px 0 var(--cyan)}
.final-line>div{display:flex;align-items:center;gap:22px}
.prompt-mark{color:var(--green);font:700 26px var(--mono)}
.final-line h2{margin:0 0 4px;font-size:clamp(22px,3vw,34px)}
.final-line p{margin:0;color:var(--muted)}

.site-footer{padding:52px 0 26px;border-top:1px solid var(--line);background:#07090b}
.footer-grid{display:grid;grid-template-columns:1.4fr .6fr .6fr;gap:46px}
.footer-grid h2,.footer-grid h3{margin-top:0}
.footer-grid p,.footer-grid a{color:var(--muted)}
.footer-grid p{max-width:520px}
.footer-grid a{display:block;width:max-content;margin:8px 0}
.footer-grid a:hover{color:var(--cyan)}
.copyright{margin-top:30px;padding-top:20px;border-top:1px solid var(--line-soft);color:#68757f;font:12px var(--mono)}

@media(max-width:1050px){
  .hero-grid{grid-template-columns:1fr}
  .hero-copy{max-width:760px}
  .diagnostic-console{width:100%}
  .section-heading{grid-template-columns:150px 1fr}.section-heading>p:last-child{grid-column:2}
  .session-pipeline{grid-template-columns:1fr 1fr}
  .session-pipeline li{border-bottom:1px solid var(--line)}
  .session-pipeline li::after{display:none}
}
@media(max-width:780px){
  .console-shell{width:min(100% - 28px,1240px)}
  .nav{padding:12px 0;flex-wrap:wrap}.nav-links{order:3;width:100%;overflow-x:auto}.nav>.download-button{min-width:110px}
  .console-hero{padding-top:40px}.hero-copy h1{font-size:clamp(40px,12vw,62px)}
  .console-body{grid-template-columns:66px 1fr}.client-preview{grid-column:1/3;border-top:1px solid var(--line);border-left:0}
  .section-heading,.compact-heading,.preview-layout,.insight-layout,.faq-layout{grid-template-columns:1fr}
  .section-heading>p:last-child{grid-column:auto}
  .signal-board article{grid-template-columns:62px minmax(0,1fr)}.signal-board article>a{grid-column:2}
  .guide-index li{grid-template-columns:66px 1fr}.guide-index li>a{grid-column:2}
  .footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:1/3}
}
@media(max-width:520px){
  .hero-actions{display:grid;justify-items:start}.hero-actions .download-button{width:100%}
  .hero-notes{display:grid;gap:7px}.hero-notes li{padding:0;border:0}
  .console-titlebar{grid-template-columns:auto 1fr}.example-badge{grid-column:1/3;width:max-content}
  .console-body{grid-template-columns:1fr;min-height:0}.phase-rail{display:flex;overflow-x:auto;border-right:0;border-bottom:1px solid var(--line)}.phase-rail li{min-width:70px}.phase-rail li::after{display:none}
  .event-stream li{grid-template-columns:38px minmax(0,1fr)}.event-stream li>span{display:none}
  .client-preview{grid-column:auto}
  .signal-board article{grid-template-columns:1fr;gap:10px}.signal-board article>a{grid-column:auto}
  .session-pipeline{grid-template-columns:1fr}
  .guide-index li{grid-template-columns:1fr;gap:8px}.guide-index li>a{grid-column:auto}
  .final-line{grid-template-columns:1fr}.final-line>div{align-items:flex-start}.final-line .download-button{width:100%}
  .footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none!important}
}

/* Hero image safety: keep imported product artwork at its natural ratio. */
.console-hero .client-preview{align-self:center;height:auto;margin:0;padding:0;overflow:visible;transform:none}
.console-hero .client-preview img{display:block;width:100%;height:auto;min-height:0;max-height:none;margin:0;padding:0;object-fit:contain;object-position:center;clip-path:none;transform:none}