:root{
  color-scheme:dark;
  --bg:#05080c;
  --panel:#0a1017;
  --panel2:#0d151e;
  --line:#1d2a37;
  --text:#eef6ff;
  --muted:#8ea0b2;
  --green:#52f29b;
  --cyan:#69d8ff;
  --amber:#ffcb67;
  --red:#ff6d7a;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--bg)}
body{margin:0;background:radial-gradient(circle at 78% -10%,rgba(82,242,155,.08),transparent 30rem),var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;min-height:100vh}
button,input{font:inherit}
a{color:inherit}
.gud-grid{position:fixed;inset:0;pointer-events:none;opacity:.17;background-image:linear-gradient(rgba(105,216,255,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(105,216,255,.08) 1px,transparent 1px);background-size:48px 48px;mask-image:linear-gradient(to bottom,#000,transparent 78%)}
.gud-nav{position:sticky;top:0;z-index:20;display:grid;grid-template-columns:auto auto 1fr;align-items:center;gap:22px;padding:12px clamp(16px,3vw,42px);border-bottom:1px solid #17222d;background:rgba(5,8,12,.92);backdrop-filter:blur(16px)}
.gud-brand img{width:142px;display:block}
.gud-nav-copy{display:grid;line-height:1}.gud-nav-copy strong{font-size:14px;letter-spacing:.18em;color:var(--green)}.gud-nav-copy span{margin-top:6px;font-size:9px;letter-spacing:.15em;color:var(--muted)}
.gud-nav nav{display:flex;justify-content:flex-end;align-items:center;gap:16px;flex-wrap:wrap}.gud-nav nav a{text-decoration:none;font-size:11px;font-weight:800;letter-spacing:.1em;color:#a9b7c5}.gud-nav nav a:hover{color:#fff}.gud-enter{border:1px solid var(--green);padding:8px 11px;color:var(--green)!important}
.gud-shell{width:min(1480px,100%);margin:auto;padding:0 clamp(16px,4vw,58px) 90px}
.gud-hero{min-height:72vh;display:grid;align-content:center;padding:92px 0 72px;border-bottom:1px solid var(--line)}
.gud-eyebrow,.gud-section-head p,.gud-dyor>div>p,.gud-detail-label{font-size:10px;font-weight:900;letter-spacing:.18em;color:var(--green);margin:0 0 12px}
.gud-hero h1{font-size:clamp(78px,15vw,210px);line-height:.72;letter-spacing:-.075em;margin:0;font-weight:950}.gud-hero h1 span{color:transparent;-webkit-text-stroke:2px var(--green);text-shadow:0 0 40px rgba(82,242,155,.08)}
.gud-lede{max-width:820px;margin:36px 0 22px;font-size:clamp(18px,2vw,28px);line-height:1.4;color:#c9d4de}
.gud-hero-meta{display:flex;gap:24px;flex-wrap:wrap;color:var(--muted);font-size:10px;letter-spacing:.12em}.gud-hero-meta b{color:#fff;font-size:13px}
.gud-search{margin-top:38px;width:min(760px,100%);display:grid;gap:8px}.gud-search span{font-size:9px;font-weight:900;letter-spacing:.18em;color:#73869a}.gud-search input{width:100%;border:1px solid #233241;background:#080d13;color:#fff;padding:14px 16px;outline:none}.gud-search input:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(105,216,255,.08)}
.gud-filter{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}.gud-filter button{border:1px solid #21303d;background:#091017;color:#899baa;padding:8px 12px;font-size:10px;font-weight:900;letter-spacing:.1em;cursor:pointer}.gud-filter button[aria-pressed="true"]{color:#07120c;background:var(--green);border-color:var(--green)}
.gud-section{padding:72px 0 18px}.gud-section[hidden]{display:none}.gud-section-head{display:grid;grid-template-columns:auto auto 1fr;align-items:center;gap:18px}.gud-section-head>span{font:900 44px/1 ui-monospace,SFMono-Regular,Consolas,monospace;color:#233444}.gud-section-head h2{font-size:clamp(32px,5vw,62px);line-height:.9;margin:0}.gud-section-head p{margin-bottom:6px}.gud-section-head i{height:1px;background:linear-gradient(90deg,#27394a,transparent)}
.gud-section-copy{max-width:760px;color:var(--muted);font-size:14px;line-height:1.65;margin:16px 0 28px}
.gud-card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.gud-card{position:relative;background:linear-gradient(180deg,#0d141c,#080d12);border:1px solid #1d2a37;min-height:440px;overflow:hidden;transition:transform .16s ease,border-color .16s ease}.gud-card:hover{transform:translateY(-2px);border-color:#3a5368}.gud-card-open{position:absolute;inset:0;z-index:4;opacity:0;cursor:pointer}
.gud-card-top{position:absolute;z-index:3;top:0;left:0;right:0;display:flex;justify-content:space-between;gap:12px;padding:12px 14px;font-size:9px;font-weight:900;letter-spacing:.12em;color:#9eb0c1}.gud-card-top span{color:var(--green)}
.gud-visual{height:190px;padding:28px 12px 0;background:radial-gradient(circle at 60% 20%,rgba(105,216,255,.07),transparent 48%),#080d12;border-bottom:1px solid #192531}.gud-visual svg,.gud-detail-visual svg{width:100%;height:100%;overflow:visible}.gud-visual .grid,.gud-detail-visual .grid{stroke:#1d2b38;stroke-width:1;fill:none}.gud-visual .price,.gud-detail-visual .price{stroke:#dbe9f5;stroke-width:2.5;fill:none}.gud-visual .level,.gud-detail-visual .level{stroke:var(--cyan);stroke-width:1.5;stroke-dasharray:6 5;fill:none}.gud-visual .guide,.gud-detail-visual .guide{stroke:var(--green);stroke-width:2;fill:none}.gud-visual .entry,.gud-detail-visual .entry{stroke:#fff;stroke-width:1.5;fill:none}.gud-visual .reward,.gud-detail-visual .reward{fill:rgba(82,242,155,.12);stroke:var(--green)}.gud-visual .risk,.gud-detail-visual .risk{fill:rgba(255,109,122,.1);stroke:var(--red)}.gud-visual .node,.gud-detail-visual .node{fill:#0f1b25;stroke:#3b566c}.gud-visual .wire,.gud-detail-visual .wire{stroke:var(--cyan);stroke-width:2}.gud-visual circle,.gud-detail-visual circle{fill:var(--bg);stroke:var(--green);stroke-width:2}.gud-visual text,.gud-detail-visual text{fill:#8195a7;font-size:9px;font-weight:900;letter-spacing:.08em}
.gud-card-body{padding:18px}.gud-card h3{font-size:26px;margin:0 0 8px}.gud-card-body>p{margin:0;color:#9cadbc;line-height:1.5;font-size:13px;min-height:58px}
.gud-quick{display:grid;gap:7px;margin:18px 0}.gud-quick span{display:grid;grid-template-columns:28px 1fr;align-items:center;border-top:1px solid #18232e;padding-top:7px;font-size:11px;color:#bcc8d3}.gud-quick b{font-family:ui-monospace,monospace;color:#536a7e}
.gud-tags{display:flex;gap:5px;flex-wrap:wrap}.gud-tags small{font-size:9px;color:#6f8293;background:#0b131a;border:1px solid #172633;padding:4px 6px}.gud-more{display:block;margin-top:18px;font-size:10px;font-weight:900;letter-spacing:.1em;color:var(--cyan)}
.gud-empty{grid-column:1/-1;border:1px dashed #22303c;color:#647789;padding:24px;text-align:center;font:800 11px ui-monospace,monospace;letter-spacing:.12em}
.gud-dyor{margin-top:84px;padding:36px;border:1px solid #29402f;background:linear-gradient(135deg,rgba(82,242,155,.07),rgba(10,16,23,.96))}.gud-dyor h2{font-size:clamp(32px,5vw,66px);line-height:.9;margin:0 0 28px}.gud-dyor-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}.gud-dyor-grid article{border-top:1px solid #2a4033;padding-top:14px;display:grid;gap:6px}.gud-dyor-grid b{color:var(--green);font:900 11px ui-monospace,monospace}.gud-dyor-grid strong{font-size:14px}.gud-dyor-grid span{font-size:12px;line-height:1.5;color:#91a39a}.gud-disclaimer{margin:28px 0 0;padding-top:20px;border-top:1px solid #213528;color:#82918a;font-size:11px;line-height:1.65}
.gud-dialog{width:min(1080px,calc(100% - 28px));max-height:90dvh;padding:0;border:1px solid #2d4153;background:#071018;color:#fff;box-shadow:0 35px 120px #000;overflow:auto}.gud-dialog::backdrop{background:rgba(1,4,7,.84);backdrop-filter:blur(7px)}.gud-dialog-close{position:sticky;float:right;top:12px;right:12px;z-index:5;border:1px solid #324655;background:#071018;color:#fff;width:38px;height:38px;font-size:24px;cursor:pointer}
.gud-detail-hero{display:grid;grid-template-columns:1fr 1fr;gap:28px;padding:42px;border-bottom:1px solid #1c2b37}.gud-detail-hero h2{font-size:clamp(42px,7vw,86px);line-height:.88;margin:8px 0 14px}.gud-detail-hero p{color:var(--green);font:900 10px ui-monospace,monospace;letter-spacing:.14em}.gud-detail-hero span{color:#7e91a3;font-size:10px;letter-spacing:.12em}.gud-detail-visual{min-height:230px;display:grid;align-items:center}
.gud-detail-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:#1a2a37}.gud-detail-grid section{background:#091119;padding:28px}.gud-detail-grid h3{font-size:22px;line-height:1.3;margin:0 0 10px}.gud-detail-grid section>p:not(.gud-detail-label){color:#a8b5c1;line-height:1.65;font-size:13px}
.gud-detail-list{margin:0;padding-left:18px;color:#b8c4ce}.gud-detail-list li{padding:5px 0;line-height:1.45;font-size:13px}.gud-detail-list--mistakes li::marker{color:var(--red)}.gud-detail-list--rules li::marker{color:var(--cyan)}.gud-detail-list--steps li::marker{color:var(--green)}
.gud-detail-example--valid{box-shadow:inset 3px 0 0 var(--green)}.gud-detail-example--invalid{box-shadow:inset 3px 0 0 var(--red)}.gud-detail-dyor{display:flex;gap:16px;padding:20px 28px;background:#08140e;border-top:1px solid #29402f;color:#9caea3;font-size:12px;line-height:1.5}.gud-detail-dyor b{color:var(--green);letter-spacing:.14em}
.gud-footer{display:flex;gap:18px;align-items:center;justify-content:space-between;padding:24px clamp(16px,4vw,58px);border-top:1px solid #17232e;color:#758899;font-size:10px;letter-spacing:.08em}.gud-footer p{margin:0}.gud-footer a{color:var(--green);text-decoration:none;font-weight:900}
@media(max-width:1050px){.gud-card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.gud-dyor-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.gud-nav-copy{display:none}}
@media(max-width:760px){.gud-nav{grid-template-columns:1fr auto;gap:10px}.gud-brand img{width:122px}.gud-nav nav a:not(.gud-enter){display:none}.gud-shell{padding-inline:14px}.gud-hero{min-height:auto;padding:72px 0 48px}.gud-hero h1{font-size:28vw}.gud-card-grid{grid-template-columns:1fr}.gud-card{min-height:0}.gud-dyor{padding:22px}.gud-dyor-grid,.gud-detail-grid,.gud-detail-hero{grid-template-columns:1fr}.gud-detail-hero{padding:26px}.gud-detail-grid section{padding:22px}.gud-footer{align-items:flex-start;flex-direction:column}.gud-section-head{grid-template-columns:auto 1fr}.gud-section-head i{display:none}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.gud-card{transition:none}}