/* =====================================================================
   The Barefoot Freelancer AI Hub — design system
   ===================================================================== */
:root {
  --bg: #04060c;
  --bg-1: #080c16;
  --bg-2: #0b1120;
  --panel: #0e1526;
  --panel-2: #121b30;
  --panel-3: #17223b;
  --line: #1a2640;
  --line-2: #243453;
  --line-3: #2f4470;
  --text: #e3ebff;
  --text-2: #b4c2e0;
  --muted: #8494b7;
  --dim: #5a6a8e;
  --cyan: #22d3ee;
  --violet: #a78bfa;
  --green: #34d399;
  --amber: #fbbf24;
  --pink: #f472b6;
  --red: #f87171;
  --blue: #60a5fa;
  --grad: linear-gradient(115deg, #22d3ee 0%, #a78bfa 55%, #f472b6 100%);
  --grad-soft: linear-gradient(115deg, rgba(34,211,238,.14), rgba(167,139,250,.14) 55%, rgba(244,114,182,.12));
  --f-display: "Space Grotesk", "Inter", system-ui, sans-serif;
  --f-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --r-sm: 8px; --r: 12px; --r-lg: 16px; --r-xl: 22px;
  --shadow: 0 1px 0 rgba(255,255,255,.03) inset, 0 20px 50px -24px rgba(0,0,0,.9);
  --glow: 0 0 0 1px rgba(34,211,238,.35), 0 0 28px -6px rgba(34,211,238,.35);
  --ease: cubic-bezier(.2,.7,.2,1);
  --topbar: 64px;
  --accent: var(--cyan);
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--topbar) + 20px); -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 400 16px/1.65 var(--f-body); -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden; min-height: 100vh;
}
body::before {
  content: ""; position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background-image: linear-gradient(rgba(96,165,250,.035) 1px, transparent 1px), linear-gradient(90deg, rgba(96,165,250,.035) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 20%, transparent 75%);
}
body::after {
  content: ""; position: fixed; inset: -20% -10% auto; height: 70vh; z-index: -3; pointer-events: none;
  background: radial-gradient(40% 50% at 20% 20%, rgba(34,211,238,.10), transparent 70%), radial-gradient(35% 45% at 80% 10%, rgba(167,139,250,.10), transparent 70%);
}
img, svg { max-width: 100%; }
a { color: var(--cyan); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
a.ext::after { content: "↗"; font-size: .78em; margin-left: .18em; opacity: .7; }
h1, h2, h3, h4 { font-family: var(--f-display); line-height: 1.18; letter-spacing: -.02em; margin: 0 0 .5em; color: #fff; font-weight: 600; }
h1 { font-size: clamp(2.1rem, 4.6vw, 3.6rem); font-weight: 700; letter-spacing: -.035em; }
h2 { font-size: clamp(1.55rem, 2.8vw, 2.2rem); }
h3 { font-size: 1.2rem; }
h4 { font-size: 1.02rem; }
p { margin: 0 0 1em; }
code, kbd, pre { font-family: var(--f-mono); }
:not(pre) > code { font-size: .86em; background: rgba(167,139,250,.12); color: #d4c7ff; padding: .12em .42em; border-radius: 6px; border: 1px solid rgba(167,139,250,.18); white-space: nowrap; }
kbd { font-size: .72em; padding: .15em .45em; border-radius: 5px; border: 1px solid var(--line-2); background: var(--bg-2); color: var(--muted); }
::selection { background: rgba(34,211,238,.3); color: #fff; }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; border-radius: 4px; }
.wrap { max-width: 1240px; margin: 0 auto; padding: 0 24px; }
.wrap.narrow { max-width: 860px; }
.grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.muted { color: var(--muted); }
.small { font-size: .86rem; }
.mono { font-family: var(--f-mono); }
.center { text-align: center; }
[hidden] { display: none !important; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--cyan); color: #000; padding: 8px 14px; border-radius: 8px; z-index: 100; }
.skip:focus { left: 8px; }

/* ---------- buttons, chips, tags ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 42px; padding: 0 18px;
  border-radius: 10px; border: 1px solid var(--line-2); background: var(--panel); color: var(--text);
  font: 600 .92rem/1 var(--f-body); cursor: pointer; transition: transform .2s var(--ease), box-shadow .2s, border-color .2s, background .2s; white-space: nowrap;
}
.btn:hover { text-decoration: none; border-color: var(--line-3); background: var(--panel-2); transform: translateY(-1px); }
.btn-primary { background: var(--grad); border: 0; color: #050712; box-shadow: 0 8px 24px -10px rgba(167,139,250,.7); }
.btn-primary:hover { background: var(--grad); filter: brightness(1.08); box-shadow: 0 10px 30px -8px rgba(167,139,250,.8); }
.btn-ghost { background: rgba(255,255,255,.02); }
.btn-lg { height: 50px; padding: 0 24px; font-size: 1rem; border-radius: 12px; }
.btn-sm { height: 34px; padding: 0 12px; font-size: .82rem; border-radius: 8px; }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none; }
.chip {
  display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px; border-radius: 999px; font: 500 .78rem/1.3 var(--f-mono);
  border: 1px solid var(--line-2); background: var(--bg-2); color: var(--text-2); cursor: pointer; transition: .15s;
}
.chip:hover { border-color: var(--cyan); color: #fff; }
.chip.active { border-color: var(--cyan); background: rgba(34,211,238,.12); color: var(--cyan); }
.chip em { font-style: normal; opacity: .55; }
.chip-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 22px; }
.tag { display: inline-block; font: 500 .7rem/1.4 var(--f-mono); padding: 3px 9px; border-radius: 999px; border: 1px solid var(--line-2); color: var(--text-2); background: var(--bg-2); }
.tags { display: flex; flex-wrap: wrap; gap: 6px; }
.kicker { display: inline-block; font: 500 .74rem/1.4 var(--f-mono); letter-spacing: .14em; color: var(--cyan); margin-bottom: 12px; text-transform: uppercase; }
.lead { font-size: 1.12rem; color: var(--text-2); max-width: 720px; line-height: 1.7; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 10px var(--green); display: inline-block; flex: none; }

/* track color helpers */
.c-cyan { --accent: var(--cyan); } .c-violet { --accent: var(--violet); } .c-green { --accent: var(--green); }
.c-amber { --accent: var(--amber); } .c-pink { --accent: var(--pink); } .c-blue { --accent: var(--blue); }

/* ---------- top bar ---------- */
.topbar { position: sticky; top: 0; z-index: 60; height: var(--topbar); background: rgba(4,6,12,.75); backdrop-filter: blur(16px) saturate(1.4); -webkit-backdrop-filter: blur(16px) saturate(1.4); border-bottom: 1px solid var(--line); }
.topbar-inner { max-width: 1400px; margin: 0 auto; height: 100%; padding: 0 20px; display: flex; align-items: center; gap: 20px; }
.brand { display: flex; align-items: center; gap: 10px; color: #fff; flex: none; }
.brand:hover { text-decoration: none; }
.brand svg { width: 34px; height: 34px; filter: drop-shadow(0 0 12px rgba(34,211,238,.35)); }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-text b { font: 700 1.02rem/1.1 var(--f-display); letter-spacing: -.01em; }
.brand-text small { font: 500 .56rem/1.4 var(--f-mono); letter-spacing: .18em; color: var(--dim); }
.mainnav { display: flex; gap: 2px; margin-left: 12px; }
.mainnav a { color: var(--text-2); font: 500 .88rem/1 var(--f-body); padding: 9px 12px; border-radius: 8px; transition: .15s; position: relative; }
.mainnav a:hover { color: #fff; background: rgba(255,255,255,.04); text-decoration: none; }
.mainnav a.active { color: #fff; }
.mainnav a.active::after { content: ""; position: absolute; left: 12px; right: 12px; bottom: -13px; height: 2px; background: var(--grad); border-radius: 2px; }
.topbar-actions { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.search-btn { display: flex; align-items: center; gap: 8px; height: 36px; padding: 0 10px 0 12px; border-radius: 9px; border: 1px solid var(--line-2); background: var(--bg-2); color: var(--muted); font: 500 .84rem var(--f-body); cursor: pointer; min-width: 190px; }
.search-btn:hover { border-color: var(--line-3); color: var(--text); }
.search-btn svg, .palette-input svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; }
.search-btn kbd { margin-left: auto; }
.menu-btn { display: none; width: 40px; height: 40px; border-radius: 9px; border: 1px solid var(--line-2); background: var(--bg-2); cursor: pointer; flex-direction: column; justify-content: center; align-items: center; gap: 4px; }
.menu-btn span { width: 16px; height: 2px; background: var(--text); border-radius: 2px; transition: .2s; }
.menu-btn[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.menu-btn[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-btn[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.scroll-progress { position: absolute; left: 0; bottom: -1px; height: 2px; width: 0; background: var(--grad); }
.drawer { position: fixed; inset: var(--topbar) 0 0; z-index: 55; background: rgba(4,6,12,.97); backdrop-filter: blur(12px); padding: 20px; }
.drawer nav { display: flex; flex-direction: column; gap: 4px; }
.drawer a:not(.btn) { color: var(--text); font: 600 1.15rem var(--f-display); padding: 14px 8px; border-bottom: 1px solid var(--line); }
.drawer a.active { color: var(--cyan); }
.drawer .btn { margin-top: 18px; }
@media (max-width: 1100px) { .search-btn { min-width: 0; } .search-btn span, .search-btn kbd { display: none; } }
@media (max-width: 980px) { .mainnav, .hide-sm { display: none; } .menu-btn { display: flex; } }

/* ---------- sections ---------- */
.section { padding: 88px 0; position: relative; }
.section.tight { padding: 40px 0; }
.section-alt { background: linear-gradient(180deg, transparent, rgba(14,21,38,.55) 12%, rgba(14,21,38,.55) 88%, transparent); }
.sec-head { max-width: 760px; margin-bottom: 44px; }
.sec-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.sec-head p { color: var(--text-2); font-size: 1.06rem; }
.h-small { font-size: 1.15rem; margin-bottom: 16px; }
.crumbs { display: flex; flex-wrap: wrap; gap: 8px; font: 500 .8rem var(--f-mono); color: var(--dim); margin-bottom: 22px; }
.crumbs a { color: var(--muted); }
.crumbs span:last-child { color: var(--text-2); }
.page-hero { padding: 56px 0 40px; border-bottom: 1px solid var(--line); background: linear-gradient(180deg, rgba(34,211,238,.03), transparent); }
.page-hero.compact { padding-bottom: 36px; }
.page-hero h1 { max-width: 900px; }
.meta-row { display: flex; flex-wrap: wrap; gap: 10px 20px; font: 500 .85rem var(--f-mono); color: var(--muted); margin-top: 14px; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0; }
.cta-row.center { justify-content: center; }

/* ---------- HOME ---------- */
#neural { position: absolute; top: 0; left: 0; width: 100%; height: 100vh; z-index: -1; opacity: .6; pointer-events: none; }
.page-home main { position: relative; }
.hero { padding: 72px 0 72px; }
.hero-grid { display: grid; grid-template-columns: 1.08fr 1fr; gap: 56px; align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 10px; font: 500 .74rem var(--f-mono); letter-spacing: .14em; color: var(--cyan); border: 1px solid rgba(34,211,238,.3); background: rgba(34,211,238,.06); padding: 7px 14px; border-radius: 999px; margin-bottom: 22px; }
.pulse { width: 8px; height: 8px; border-radius: 50%; background: var(--green); animation: pulse 2s infinite; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(52,211,153,.7); } 70% { box-shadow: 0 0 0 10px rgba(52,211,153,0); } 100% { box-shadow: 0 0 0 0 rgba(52,211,153,0); } }
.hero h1 { font-size: clamp(2.4rem, 5.2vw, 4.2rem); }
.hero-stats { display: grid; grid-template-columns: repeat(4, auto); gap: 8px 36px; justify-content: start; margin: 8px 0 0; }
.hero-stats div { border-left: 2px solid var(--line-2); padding-left: 14px; }
.hero-stats dt { font: 700 1.7rem/1.1 var(--f-mono); color: #fff; }
.hero-stats dd { margin: 2px 0 0; font: 500 .74rem var(--f-mono); color: var(--muted); text-transform: uppercase; letter-spacing: .08em; }
.hero-visual { position: relative; }
.terminal { background: #050912; border: 1px solid var(--line-2); border-radius: var(--r-lg); overflow: hidden; box-shadow: var(--shadow), 0 0 80px -30px rgba(167,139,250,.6); }
.term-bar { display: flex; align-items: center; gap: 12px; padding: 11px 14px; background: #0a101d; border-bottom: 1px solid var(--line); font: 500 .74rem var(--f-mono); color: var(--dim); }
.term-live { margin-left: auto; display: flex; align-items: center; gap: 6px; color: var(--green); }
.term-live .dot { width: 6px; height: 6px; }
.term-body { padding: 20px; font: 400 .84rem/1.7 var(--f-mono); min-height: 340px; color: #b9c7e6; white-space: pre-wrap; word-break: break-word; }
.term-body.static { min-height: 0; }
.term-body .p { color: var(--green); } .term-body .c { color: var(--cyan); } .term-body .v { color: var(--violet); } .term-body .a { color: var(--amber); } .term-body .m { color: var(--dim); }
.cursor { display: inline-block; width: 8px; height: 1.05em; background: var(--cyan); vertical-align: -3px; animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.float-card { position: absolute; display: flex; align-items: center; gap: 10px; padding: 10px 14px; border-radius: 12px; background: rgba(14,21,38,.92); border: 1px solid var(--line-2); box-shadow: var(--shadow); backdrop-filter: blur(8px); font-size: .82rem; animation: floaty 6s ease-in-out infinite; }
.float-card b { display: block; color: #fff; font-size: .86rem; }
.float-card small { color: var(--muted); font-family: var(--f-mono); font-size: .7rem; }
.fc-icon { width: 32px; height: 32px; display: grid; place-items: center; border-radius: 9px; background: var(--grad-soft); border: 1px solid var(--line-2); }
.fc1 { left: -28px; bottom: -22px; } .fc2 { right: -18px; top: -20px; animation-delay: -3s; }
@keyframes floaty { 50% { transform: translateY(-8px); } }
@media (max-width: 960px) { .hero-grid { grid-template-columns: 1fr; gap: 40px; } .hero { padding-top: 40px; } .fc1 { left: 8px; } .fc2 { right: 8px; } }
@media (max-width: 560px) { .hero-stats { grid-template-columns: repeat(2, auto); } .float-card { display: none; } .term-body { min-height: 300px; font-size: .76rem; } }

.hub-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 18px; }
.hub-card { grid-column: span 2; display: flex; flex-direction: column; padding: 26px; border-radius: var(--r-xl); background: linear-gradient(180deg, var(--panel), var(--bg-1)); border: 1px solid var(--line); color: var(--text); transition: .25s var(--ease); position: relative; overflow: hidden; }
.hub-card::before { content: ""; position: absolute; inset: 0; background: var(--grad-soft); opacity: 0; transition: .25s; }
.hub-card > * { position: relative; }
.hub-card:hover { text-decoration: none; border-color: var(--line-3); transform: translateY(-3px); box-shadow: var(--shadow); }
.hub-card:hover::before { opacity: 1; }
.hub-academy { grid-column: span 4; grid-row: span 1; }
.hub-card:nth-child(n+4) { grid-column: span 3; }
.hub-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; }
.hub-tag { font: 500 .66rem var(--f-mono); letter-spacing: .14em; color: var(--cyan); }
.hub-arrow { width: 32px; height: 32px; border-radius: 50%; display: grid; place-items: center; border: 1px solid var(--line-2); transition: .2s; }
.hub-card:hover .hub-arrow { background: var(--grad); color: #000; border-color: transparent; }
.hub-card h3 { font-size: 1.5rem; }
.hub-card p { color: var(--text-2); font-size: .95rem; }
.hub-tracks { display: flex; flex-wrap: wrap; gap: 8px; margin-top: auto; }
.hub-tracks .chip { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 40%, transparent); background: color-mix(in srgb, var(--accent) 8%, transparent); cursor: inherit; }
.mini-console { margin-top: auto; font: 500 .74rem/1.9 var(--f-mono); padding: 12px 14px; background: #050912; border: 1px solid var(--line); border-radius: 10px; color: var(--text-2); }
.mini-meter { margin-top: auto; display: grid; grid-template-columns: auto 1fr auto; gap: 10px; align-items: center; font: 500 .76rem var(--f-mono); color: var(--muted); }
.mini-meter i { height: 8px; border-radius: 9px; background: var(--grad); display: block; }
.mini-meter b { color: var(--green); }
.mini-icons { margin-top: auto; font-size: 1.5rem; letter-spacing: .2em; }
.mini-search { margin-top: auto; font: 500 .82rem var(--f-mono); color: var(--muted); padding: 10px 14px; border: 1px solid var(--line-2); border-radius: 10px; background: var(--bg-2); }
.mini-search span { color: var(--cyan); margin-right: 6px; }
@media (max-width: 960px) { .hub-grid { grid-template-columns: 1fr 1fr; } .hub-card, .hub-academy, .hub-card:nth-child(n+4) { grid-column: span 1; } .hub-academy { grid-column: span 2; } }
@media (max-width: 620px) { .hub-grid { grid-template-columns: 1fr; } .hub-academy { grid-column: span 1; } }

.path { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; counter-reset: p; }
.path-step a { display: flex; gap: 16px; padding: 22px; height: 100%; border-radius: var(--r-lg); border: 1px solid var(--line); background: var(--panel); color: var(--text); transition: .2s; }
.path-step a:hover { text-decoration: none; border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent), 0 12px 40px -20px var(--accent); }
.path-num { font: 700 1.9rem/1 var(--f-mono); color: var(--accent); opacity: .9; }
.path-body { flex: 1; display: flex; flex-direction: column; }
.path-body h3 { font-size: 1.1rem; margin-bottom: .35em; }
.path-body p { color: var(--muted); font-size: .9rem; margin-bottom: .8em; }
.path-meta { font: 500 .74rem var(--f-mono); color: var(--dim); margin-top: auto; }
.path-bar { height: 4px; border-radius: 9px; background: var(--line); overflow: hidden; margin-top: 10px; }
.path-bar i { display: block; height: 100%; width: 0; background: var(--accent, var(--cyan)); border-radius: 9px; transition: width .6s var(--ease); }
@media (max-width: 960px) { .path { grid-template-columns: 1fr 1fr; } }
@media (max-width: 620px) { .path { grid-template-columns: 1fr; } }
.continue-card { display: flex; align-items: center; gap: 18px; justify-content: space-between; flex-wrap: wrap; padding: 18px 22px; border-radius: var(--r-lg); border: 1px solid rgba(34,211,238,.35); background: linear-gradient(120deg, rgba(34,211,238,.08), rgba(167,139,250,.06)); margin-bottom: 22px; }
.continue-card small { font: 500 .72rem var(--f-mono); letter-spacing: .1em; color: var(--cyan); display: block; }
.continue-card b { font: 600 1.1rem var(--f-display); }

.build-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.build-card { padding: 24px; border-radius: var(--r-lg); background: var(--panel); border: 1px solid var(--line); color: var(--text); display: flex; flex-direction: column; transition: .2s; }
.build-card:hover { text-decoration: none; border-color: var(--line-3); transform: translateY(-2px); }
.build-k { font: 500 .68rem var(--f-mono); letter-spacing: .12em; color: var(--violet); margin-bottom: 10px; }
.build-card p { color: var(--muted); font-size: .92rem; }
.build-card .more { margin-top: auto; color: var(--cyan); font: 500 .82rem var(--f-mono); }
@media (max-width: 960px) { .build-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 620px) { .build-grid { grid-template-columns: 1fr; } }

.who-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.who { padding: 24px; border-radius: var(--r-lg); border: 1px solid var(--line); background: var(--panel); }
.who > span { font-size: 1.6rem; display: block; margin-bottom: 10px; }
.who p { color: var(--muted); font-size: .92rem; margin: 0; }
@media (max-width: 900px) { .who-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .who-grid { grid-template-columns: 1fr; } }

.faq details { border: 1px solid var(--line); background: var(--panel); border-radius: var(--r); margin-bottom: 10px; transition: .2s; }
.faq details[open] { border-color: var(--line-3); }
.faq summary { cursor: pointer; list-style: none; padding: 18px 20px; font: 600 1rem var(--f-display); display: flex; justify-content: space-between; gap: 16px; color: #fff; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font: 500 1.2rem var(--f-mono); color: var(--cyan); transition: .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details > div { padding: 0 20px 18px; color: var(--text-2); }
.faq details p:last-child { margin: 0; }

.cta-band { padding: 72px 0; }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; padding: 40px; border-radius: var(--r-xl); border: 1px solid var(--line-2); background: radial-gradient(60% 120% at 0% 0%, rgba(34,211,238,.14), transparent), radial-gradient(60% 120% at 100% 100%, rgba(244,114,182,.12), transparent), var(--panel); }
.cta-inner h2 { margin-bottom: .2em; }
.cta-inner p { color: var(--text-2); margin: 0; }

/* ---------- ACADEMY ---------- */
.page-hero-grid { display: grid; grid-template-columns: 1fr 340px; gap: 40px; align-items: end; }
@media (max-width: 900px) { .page-hero-grid { grid-template-columns: 1fr; } }
.progress-panel { display: flex; gap: 18px; align-items: center; padding: 20px; border-radius: var(--r-lg); border: 1px solid var(--line-2); background: var(--panel); }
.ring { position: relative; width: 104px; height: 104px; flex: none; }
.ring svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.ring circle { fill: none; stroke-width: 9; }
.ring-bg { stroke: var(--line); }
.ring-fg { stroke: url(#none); stroke: var(--cyan); stroke-linecap: round; stroke-dasharray: 326.7; stroke-dashoffset: 326.7; transition: stroke-dashoffset .8s var(--ease); }
.ring-label { position: absolute; inset: 0; display: grid; place-content: center; text-align: center; }
.ring-label b { font: 700 1.4rem var(--f-mono); color: #fff; }
.ring-label small { font: 500 .66rem var(--f-mono); color: var(--muted); }
.pp-text b { display: block; font-family: var(--f-display); }
.pp-text p { font-size: .86rem; color: var(--muted); margin: 4px 0 12px; }
.track-nav-wrap { position: sticky; top: var(--topbar); z-index: 30; background: rgba(4,6,12,.86); backdrop-filter: blur(12px); border-bottom: 1px solid var(--line); }
.track-nav { display: flex; gap: 6px; overflow-x: auto; padding: 10px 0; scrollbar-width: none; }
.track-nav::-webkit-scrollbar { display: none; }
.track-nav a { display: flex; align-items: center; gap: 8px; white-space: nowrap; font: 500 .82rem var(--f-body); color: var(--text-2); padding: 7px 12px; border-radius: 8px; border: 1px solid transparent; }
.track-nav a span { font: 700 .68rem var(--f-mono); width: 22px; height: 22px; display: grid; place-items: center; border-radius: 6px; background: color-mix(in srgb, var(--accent) 16%, transparent); color: var(--accent); }
.track-nav a:hover, .track-nav a.active { text-decoration: none; color: #fff; border-color: var(--line-2); background: var(--panel); }
.how-strip { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); border-radius: var(--r-lg); overflow: hidden; margin-bottom: 64px; }
.how-strip div { padding: 18px 20px; border-right: 1px solid var(--line); background: var(--bg-1); }
.how-strip div:last-child { border-right: 0; }
.how-strip b { font: 700 .8rem var(--f-mono); color: var(--cyan); display: block; }
.how-strip span { display: block; font: 600 1rem var(--f-display); color: #fff; margin: 4px 0 2px; }
.how-strip small { color: var(--muted); font-size: .82rem; }
@media (max-width: 760px) { .how-strip { grid-template-columns: 1fr 1fr; } .how-strip div:nth-child(2) { border-right: 0; } .how-strip div:nth-child(-n+2) { border-bottom: 1px solid var(--line); } }
.track { margin-bottom: 72px; scroll-margin-top: calc(var(--topbar) + 70px); }
.track-head { display: grid; grid-template-columns: auto 1fr 200px; gap: 20px; align-items: center; margin-bottom: 22px; }
.track-badge { width: 60px; height: 60px; border-radius: 16px; display: grid; place-items: center; font-size: 1.6rem; color: var(--accent); background: color-mix(in srgb, var(--accent) 12%, transparent); border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent); }
.track-head .kicker { color: var(--accent); margin-bottom: 4px; }
.track-head h2 { margin-bottom: .2em; }
.track-head p { color: var(--muted); margin: 0; }
.track-progress { font: 500 .8rem var(--f-mono); color: var(--muted); text-align: right; }
@media (max-width: 760px) { .track-head { grid-template-columns: auto 1fr; } .track-progress { grid-column: 1 / -1; text-align: left; } }
.lesson-list { border: 1px solid var(--line); border-radius: var(--r-lg); overflow: hidden; background: var(--bg-1); }
.lesson-row { display: grid; grid-template-columns: 56px 1fr auto 36px; gap: 18px; align-items: center; padding: 18px 22px; color: var(--text); border-bottom: 1px solid var(--line); transition: background .15s; position: relative; }
.lesson-row:last-child { border-bottom: 0; }
.lesson-row::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: var(--accent); opacity: 0; transition: .15s; }
.lesson-row:hover { background: var(--panel); text-decoration: none; }
.lesson-row:hover::before { opacity: 1; }
.lr-num { font: 700 1.3rem var(--f-mono); color: var(--accent); }
.lr-body h3 { font-size: 1.06rem; margin-bottom: .25em; }
.lr-body p { color: var(--muted); font-size: .88rem; margin: 0; line-height: 1.5; }
.lr-meta { display: flex; flex-direction: column; align-items: flex-end; gap: 6px; font: 500 .74rem var(--f-mono); color: var(--dim); white-space: nowrap; }
.lvl { padding: 2px 8px; border-radius: 99px; border: 1px solid var(--line-2); color: var(--text-2); }
.lr-check { width: 28px; height: 28px; border-radius: 50%; border: 1.5px solid var(--line-2); display: grid; place-items: center; color: transparent; font-size: .85rem; transition: .2s; }
.lesson-row.done .lr-check { background: var(--green); border-color: var(--green); color: #04130c; }
@media (max-width: 700px) { .lesson-row { grid-template-columns: 40px 1fr 28px; } .lr-meta { display: none; } }

/* ---------- LESSON ---------- */
.lesson-shell { display: grid; grid-template-columns: 280px minmax(0, 1fr) 220px; gap: 48px; max-width: 1440px; margin: 0 auto; padding: 0 24px; }
.lesson-side { position: sticky; top: var(--topbar); height: calc(100vh - var(--topbar)); overflow-y: auto; padding: 26px 4px 40px 0; border-right: 1px solid var(--line); scrollbar-width: thin; scrollbar-color: var(--line-2) transparent; }
.side-head { display: flex; justify-content: space-between; font: 500 .8rem var(--f-mono); margin-bottom: 8px; padding-right: 16px; }
.side-head a { color: var(--text-2); }
.side-head span { color: var(--cyan); }
.side-bar { height: 3px; background: var(--line); border-radius: 9px; margin: 0 16px 18px 0; overflow: hidden; }
.side-bar i { display: block; height: 100%; width: 0; background: var(--grad); transition: width .6s; }
.side-track { margin-bottom: 4px; }
.side-track-btn { width: 100%; display: flex; align-items: center; gap: 8px; text-align: left; background: none; border: 0; color: var(--text); font: 600 .86rem var(--f-display); padding: 9px 10px; border-radius: 8px; cursor: pointer; }
.side-track-btn span { color: var(--accent); }
.side-track-btn i { margin-left: auto; font-style: normal; color: var(--dim); transition: .2s; }
.side-track-btn:hover { background: rgba(255,255,255,.03); }
.side-track.open .side-track-btn i { transform: rotate(90deg); }
.side-track ul { list-style: none; margin: 0 0 8px; padding: 0 0 0 10px; display: none; }
.side-track.open ul { display: block; }
.side-track li a { display: grid; grid-template-columns: 26px 1fr 16px; gap: 6px; align-items: start; padding: 7px 10px; border-radius: 7px; color: var(--muted); font-size: .84rem; line-height: 1.35; border-left: 2px solid var(--line); margin-left: 4px; }
.side-track li a:hover { color: #fff; background: rgba(255,255,255,.03); text-decoration: none; }
.side-track li a.current { color: #fff; background: color-mix(in srgb, var(--accent) 12%, transparent); border-left-color: var(--accent); }
.sn { font: 500 .72rem/1.6 var(--f-mono); color: var(--dim); }
.sc { color: transparent; font-size: .75rem; }
.side-track li a.done .sc { color: var(--green); }
.lesson { padding: 32px 0 80px; min-width: 0; }
.side-toggle { display: none; margin-bottom: 16px; }
.lesson-head { margin-bottom: 32px; }
.lesson-track { display: inline-block; font: 500 .76rem var(--f-mono); color: var(--accent); letter-spacing: .06em; margin-bottom: 14px; padding: 5px 12px; border-radius: 99px; background: color-mix(in srgb, var(--accent) 10%, transparent); border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent); }
.lesson-head h1 { font-size: clamp(1.9rem, 3.6vw, 2.8rem); }
.lesson-num { display: block; font: 700 .9rem var(--f-mono); color: var(--dim); margin-bottom: 6px; letter-spacing: .1em; }
.done-pill { color: var(--green) !important; }
.objectives { border: 1px solid var(--line-2); border-radius: var(--r-lg); padding: 22px 24px; background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 8%, transparent), transparent 60%), var(--panel); margin-bottom: 40px; }
.obj-title { font: 600 .78rem var(--f-mono) !important; letter-spacing: .14em; text-transform: uppercase; color: var(--accent) !important; margin-bottom: 12px !important; }
.objectives ul { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 8px 24px; }
.objectives li { position: relative; padding-left: 26px; color: var(--text-2); font-size: .95rem; }
.objectives li::before { content: "◇"; position: absolute; left: 0; color: var(--accent); }
@media (max-width: 700px) { .objectives ul { grid-template-columns: 1fr; } }
.lesson-toc { position: sticky; top: calc(var(--topbar) + 32px); align-self: start; padding-top: 32px; max-height: calc(100vh - var(--topbar) - 40px); overflow-y: auto; }
.toc-title { font: 600 .72rem var(--f-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--dim); margin-bottom: 10px; }
.lesson-toc nav { display: flex; flex-direction: column; border-left: 1px solid var(--line); }
.lesson-toc nav a { color: var(--muted); font-size: .82rem; padding: 5px 0 5px 14px; margin-left: -1px; border-left: 2px solid transparent; line-height: 1.4; }
.lesson-toc nav a:hover { color: #fff; text-decoration: none; }
.lesson-toc nav a.active { color: var(--cyan); border-left-color: var(--cyan); }
.toc-card { margin-top: 22px; padding: 14px; border-radius: 10px; border: 1px solid var(--line); background: var(--panel); font-size: .84rem; }
.toc-card small { display: block; color: var(--muted); }
@media (max-width: 1280px) { .lesson-shell { grid-template-columns: 260px minmax(0, 1fr); } .lesson-toc { display: none; } }
@media (max-width: 960px) {
  .lesson-shell { grid-template-columns: 1fr; gap: 0; padding: 0 20px; }
  .lesson-side { position: fixed; left: 0; top: var(--topbar); bottom: 0; width: min(320px, 88vw); height: auto; z-index: 50; background: var(--bg-1); padding: 20px 12px 40px 16px; transform: translateX(-105%); transition: transform .3s var(--ease); box-shadow: 20px 0 60px rgba(0,0,0,.6); }
  .lesson-side.open { transform: none; }
  .side-toggle { display: inline-flex; }
}
.side-toggle { align-items: center; gap: 8px; height: 36px; padding: 0 12px; border-radius: 8px; border: 1px solid var(--line-2); background: var(--panel); color: var(--text); font: 500 .84rem var(--f-body); cursor: pointer; }

/* prose */
.prose { font-size: 1.02rem; line-height: 1.78; color: var(--text-2); max-width: 780px; }
.prose > h2 { font-size: 1.6rem; margin: 2.2em 0 .7em; padding-top: .6em; border-top: 1px solid var(--line); scroll-margin-top: calc(var(--topbar) + 24px); }
.prose > h2:first-child { margin-top: 0; border-top: 0; padding-top: 0; }
.prose h3 { font-size: 1.2rem; margin: 1.8em 0 .6em; }
.prose h4 { color: #fff; }
.prose p { margin: 0 0 1.1em; }
.prose ul, .prose ol { padding-left: 1.3em; margin: 0 0 1.2em; }
.prose li { margin-bottom: .45em; }
.prose li::marker { color: var(--accent); }
.prose strong, .prose b { color: #fff; font-weight: 600; }
.prose em { color: var(--text); }
.prose a { color: var(--cyan); text-decoration: underline; text-decoration-color: rgba(34,211,238,.35); text-underline-offset: 3px; }
.prose a:hover { text-decoration-color: var(--cyan); }
.caption, figcaption.caption { font: 500 .8rem var(--f-mono); color: var(--dim); margin-top: -.4em; }

/* code blocks */
.code { margin: 16px 0 22px; border: 1px solid var(--line-2); border-radius: var(--r); background: #050912; overflow: hidden; }
.code-head { display: flex; align-items: center; gap: 10px; padding: 8px 10px 8px 14px; background: #0a101d; border-bottom: 1px solid var(--line); font: 500 .74rem var(--f-mono); color: var(--dim); }
.code-dots { display: flex; gap: 5px; }
.code-dots i { width: 9px; height: 9px; border-radius: 50%; background: #1f2b45; }
.code-dots i:nth-child(1) { background: #f8717199; } .code-dots i:nth-child(2) { background: #fbbf2499; } .code-dots i:nth-child(3) { background: #34d39999; }
.code-title { color: var(--text-2); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.code-lang { margin-left: auto; color: var(--dim); text-transform: lowercase; }
.copy { background: var(--bg-2); border: 1px solid var(--line-2); color: var(--text-2); font: 500 .7rem var(--f-mono); padding: 4px 10px; border-radius: 6px; cursor: pointer; transition: .15s; flex: none; }
.copy:hover { color: #fff; border-color: var(--cyan); }
.copy.done { color: var(--green); border-color: var(--green); }
.code pre { margin: 0; padding: 16px 18px; overflow-x: auto; font-size: .82rem; line-height: 1.7; color: #cfdaf5; tab-size: 4; scrollbar-width: thin; scrollbar-color: var(--line-2) transparent; }
.t-kw { color: #c4a7ff; } .t-str { color: #6ee7b7; } .t-cm { color: #5f7196; font-style: italic; } .t-num { color: #fcd34d; } .t-fn { color: #67e8f9; }
.t-tag { color: #f0abfc; } .t-var { color: #fcd34d; background: rgba(252,211,77,.08); border-radius: 4px; }

/* callouts */
.callout { display: flex; gap: 14px; padding: 16px 18px; border-radius: var(--r); border: 1px solid; margin: 22px 0; font-size: .96rem; }
.callout-icon { flex: none; width: 26px; height: 26px; border-radius: 8px; display: grid; place-items: center; font: 700 .8rem var(--f-mono); }
.callout-title { font: 600 .92rem var(--f-display); color: #fff; margin: 1px 0 4px !important; }
.callout p:last-child, .callout ul:last-child { margin-bottom: 0; }
.callout ul { padding-left: 1.1em; }
.callout.tip { border-color: rgba(52,211,153,.3); background: rgba(52,211,153,.05); } .callout.tip .callout-icon { background: rgba(52,211,153,.15); color: var(--green); }
.callout.warn { border-color: rgba(251,191,36,.3); background: rgba(251,191,36,.05); } .callout.warn .callout-icon { background: rgba(251,191,36,.15); color: var(--amber); }
.callout.info { border-color: rgba(34,211,238,.3); background: rgba(34,211,238,.05); } .callout.info .callout-icon { background: rgba(34,211,238,.15); color: var(--cyan); }
.callout.pro { border-color: rgba(167,139,250,.35); background: rgba(167,139,250,.06); } .callout.pro .callout-icon { background: rgba(167,139,250,.18); color: var(--violet); }
.callout.note { border-color: var(--line-2); background: var(--panel); }

/* steps */
.steps { list-style: none; padding: 0 !important; margin: 20px 0 26px !important; counter-reset: st; }
.steps > li { counter-increment: st; position: relative; padding: 0 0 26px 56px; margin: 0 !important; }
.steps > li::before { content: counter(st, decimal-leading-zero); position: absolute; left: 0; top: -2px; width: 36px; height: 36px; border-radius: 10px; display: grid; place-items: center; font: 700 .78rem var(--f-mono); color: #050712; background: var(--grad); }
.steps > li::after { content: ""; position: absolute; left: 17.5px; top: 40px; bottom: 4px; width: 1px; background: linear-gradient(var(--line-3), transparent); }
.steps > li:last-child::after { display: none; }
.steps h4 { margin: 4px 0 6px; font-size: 1.04rem; }
.steps p { margin-bottom: .6em; }
.steps .code { margin: 10px 0 6px; }

/* tables */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--r); margin: 18px 0 24px; background: var(--bg-1); }
.table-wrap table { width: 100%; border-collapse: collapse; font-size: .9rem; min-width: 560px; }
.table-wrap.compact table { min-width: 0; }
.table-wrap th, .table-wrap td { padding: 12px 14px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; line-height: 1.55; }
.table-wrap th { font: 600 .7rem var(--f-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--accent); background: var(--bg-2); white-space: nowrap; }
.table-wrap tr:last-child td { border-bottom: 0; }
.table-wrap tbody tr:hover { background: rgba(255,255,255,.015); }
.table-wrap td { color: var(--text-2); }

/* tabs */
.tabs { margin: 18px 0 24px; }
.tab-list { display: flex; flex-wrap: wrap; gap: 4px; border-bottom: 1px solid var(--line-2); }
.tab { background: none; border: 0; border-bottom: 2px solid transparent; margin-bottom: -1px; color: var(--muted); font: 500 .84rem var(--f-mono); padding: 10px 14px; cursor: pointer; transition: .15s; }
.tab:hover { color: #fff; }
.tab.active { color: var(--accent, var(--cyan)); border-bottom-color: var(--accent, var(--cyan)); }
.tab-panel { display: none; padding-top: 16px; }
.tab-panel.active { display: block; animation: fadeUp .3s var(--ease); }
.tab-panel > .code:first-child { margin-top: 0; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* flow diagram */
.flow { margin: 22px 0 26px; padding: 22px 18px; border: 1px solid var(--line-2); border-radius: var(--r-lg); background: radial-gradient(circle, rgba(132,148,183,.13) 1px, transparent 1.2px) 0 0/16px 16px, var(--bg-1); overflow-x: auto; }
.flow-track { display: flex; align-items: stretch; min-width: min-content; }
.flow-node { flex: 1 0 128px; max-width: 200px; background: var(--panel); border: 1px solid var(--line-2); border-top: 2px solid var(--line-3); border-radius: 10px; padding: 10px 12px; }
.flow-node.trig { border-top-color: var(--green); } .flow-node.ai { border-top-color: var(--violet); box-shadow: 0 0 24px -10px rgba(167,139,250,.7); } .flow-node.hum { border-top-color: var(--amber); } .flow-node.out { border-top-color: var(--cyan); }
.flow-type { display: block; font: 600 .6rem var(--f-mono); letter-spacing: .12em; color: var(--dim); margin-bottom: 3px; }
.flow-node b { display: block; color: #fff; font-size: .86rem; line-height: 1.3; }
.flow-sub { display: block; color: var(--muted); font-size: .74rem; line-height: 1.35; margin-top: 3px; }
.flow-edge { flex: 0 0 28px; align-self: center; height: 2px; background: linear-gradient(90deg, var(--line-3), var(--cyan)); position: relative; overflow: hidden; }
.flow-edge::after { content: ""; position: absolute; top: -2px; left: -30%; width: 30%; height: 6px; background: var(--cyan); filter: blur(3px); animation: flowdot 2.4s linear infinite; }
@keyframes flowdot { to { left: 130%; } }
.flow figcaption { font: 500 .78rem var(--f-mono); color: var(--dim); margin-top: 14px; }

/* mini cards */
.mini-cards { display: grid; gap: 12px; margin: 20px 0 26px; }
.mini-cards.c3 { grid-template-columns: repeat(3, 1fr); } .mini-cards.c4 { grid-template-columns: repeat(4, 1fr); } .mini-cards.c2 { grid-template-columns: repeat(2, 1fr); }
.mini-card { padding: 16px; border-radius: var(--r); border: 1px solid var(--line); background: var(--panel); }
.mini-icon { display: inline-grid; place-items: center; min-width: 32px; height: 32px; padding: 0 6px; border-radius: 9px; margin-bottom: 10px; background: color-mix(in srgb, var(--accent) 12%, transparent); border: 1px solid color-mix(in srgb, var(--accent) 28%, transparent); font: 700 .9rem var(--f-mono); color: var(--accent); }
.mini-card h4 { font-size: .98rem; margin-bottom: .35em; }
.mini-card p { font-size: .88rem; color: var(--muted); margin: 0 0 8px; line-height: 1.55; }
.mini-card .tags { margin-top: 6px; }
@media (max-width: 1100px) { .mini-cards.c4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 760px) { .mini-cards.c3 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 540px) { .mini-cards.c3, .mini-cards.c4, .mini-cards.c2 { grid-template-columns: 1fr; } }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 18px 0 24px; }
.split-col { border-radius: var(--r); padding: 16px 18px; border: 1px solid; }
.split-col h4 { font: 600 .78rem var(--f-mono); letter-spacing: .12em; text-transform: uppercase; margin-bottom: 10px; }
.split-col ul { margin: 0 !important; padding-left: 1.1em; font-size: .92rem; }
.split-col.good { border-color: rgba(52,211,153,.28); background: rgba(52,211,153,.04); } .split-col.good h4 { color: var(--green); } .split-col.good li::marker { color: var(--green); }
.split-col.bad { border-color: rgba(248,113,113,.28); background: rgba(248,113,113,.04); } .split-col.bad h4 { color: var(--red); } .split-col.bad li::marker { color: var(--red); }
@media (max-width: 640px) { .split { grid-template-columns: 1fr; } }
.compare { display: grid; grid-template-columns: 1fr 1.4fr; gap: 14px; margin: 14px 0; align-items: start; }
.compare > div { position: relative; }
.compare-label { display: inline-block; font: 600 .68rem var(--f-mono); letter-spacing: .12em; text-transform: uppercase; padding: 3px 9px; border-radius: 99px; margin-bottom: 4px; }
.compare-bad .compare-label { color: var(--red); background: rgba(248,113,113,.1); }
.compare-good .compare-label { color: var(--green); background: rgba(52,211,153,.1); }
.compare-bad p, .compare-good p { font-size: .9rem; color: var(--muted); }
.compare .code { margin: 8px 0; }
@media (max-width: 760px) { .compare { grid-template-columns: 1fr; } }

/* special lesson visuals */
.nest { margin: 22px 0; }
.nest-ring { border: 1px solid; border-radius: 18px; padding: 12px 14px 14px; }
.nest-ring > span { display: block; font: 600 .74rem var(--f-mono); letter-spacing: .1em; text-transform: uppercase; margin-bottom: 10px; }
.nest-ring.r1 { border-color: rgba(96,165,250,.4); background: rgba(96,165,250,.04); } .r1 > span { color: var(--blue); }
.nest-ring.r2 { border-color: rgba(34,211,238,.45); background: rgba(34,211,238,.05); } .r2 > span { color: var(--cyan); }
.nest-ring.r3 { border-color: rgba(167,139,250,.5); background: rgba(167,139,250,.06); } .r3 > span { color: var(--violet); }
.nest-ring.r4 { border-color: rgba(244,114,182,.55); background: rgba(244,114,182,.08); padding: 18px; text-align: center; } .r4 > span { color: var(--pink); margin: 0; }
.token-demo { display: flex; flex-wrap: wrap; gap: 4px; margin: 14px 0 8px; font: 500 .95rem var(--f-mono); }
.token-demo span { padding: 4px 6px; border-radius: 6px; white-space: pre; color: #fff; }
.token-demo span:nth-child(5n+1) { background: rgba(34,211,238,.18); } .token-demo span:nth-child(5n+2) { background: rgba(167,139,250,.2); } .token-demo span:nth-child(5n+3) { background: rgba(52,211,153,.18); } .token-demo span:nth-child(5n+4) { background: rgba(251,191,36,.18); } .token-demo span:nth-child(5n) { background: rgba(244,114,182,.18); }
.embed-demo { border: 1px solid var(--line-2); border-radius: var(--r); background: var(--bg-1); padding: 8px 16px; margin: 16px 0 22px; }
.embed-demo div { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 14px; padding: 10px 0; border-bottom: 1px dashed var(--line-2); }
.embed-demo div:last-child { border-bottom: 0; }
.vec { font: 500 .78rem var(--f-mono); color: var(--dim); }
.sim { font-style: normal; font: 600 .7rem var(--f-mono); padding: 2px 8px; border-radius: 99px; margin-left: auto; }
.sim.hi { color: var(--green); background: rgba(52,211,153,.12); } .sim.lo { color: var(--red); background: rgba(248,113,113,.12); }
.agent-loop { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; margin: 22px 0 8px; }
.al-node { text-align: center; padding: 16px 10px; border-radius: 12px; border: 1px solid var(--line-2); background: var(--panel); position: relative; }
.al-node span { font: 600 .66rem var(--f-mono); color: var(--dim); }
.al-node b { display: block; color: #fff; font: 600 1.02rem var(--f-display); margin: 4px 0 2px; }
.al-node small { color: var(--muted); font-size: .76rem; }
.al-node.ai { border-color: rgba(167,139,250,.5); box-shadow: 0 0 24px -10px var(--violet); }
.al-node.out { border-color: rgba(34,211,238,.5); }
.al-node:not(:last-child)::after { content: "→"; position: absolute; right: -11px; top: 50%; transform: translateY(-50%); color: var(--cyan); font-family: var(--f-mono); z-index: 1; }
.al-node.pulse-on { border-color: var(--cyan); box-shadow: var(--glow); }
@media (max-width: 700px) { .agent-loop { grid-template-columns: 1fr; } .al-node:not(:last-child)::after { content: "↓"; right: 50%; top: auto; bottom: -15px; transform: translateX(50%); } }
.mcp-diagram { display: grid; grid-template-columns: 1fr 60px 1.1fr; align-items: center; gap: 0; margin: 22px 0 26px; padding: 22px; border: 1px solid var(--line-2); border-radius: var(--r-lg); background: var(--bg-1); }
.mcp-host, .mcp-servers > div { background: var(--panel); border: 1px solid var(--line-2); border-radius: 12px; padding: 14px; }
.mcp-host { border-top: 2px solid var(--violet); }
.mcp-host b, .mcp-servers b { display: block; color: #fff; }
.mcp-host small, .mcp-servers small { color: var(--muted); font-size: .8rem; }
.mcp-clients { display: flex; gap: 6px; margin-top: 10px; }
.mcp-clients i { font: 500 .66rem var(--f-mono); font-style: normal; padding: 2px 8px; border-radius: 6px; background: rgba(167,139,250,.12); color: var(--violet); }
.mcp-lines { display: flex; flex-direction: column; gap: 42px; }
.mcp-lines span { height: 2px; background: linear-gradient(90deg, var(--violet), var(--cyan)); }
.mcp-servers { display: flex; flex-direction: column; gap: 10px; }
.mcp-servers > div { border-left: 2px solid var(--cyan); }
@media (max-width: 640px) { .mcp-diagram { grid-template-columns: 1fr; gap: 14px; } .mcp-lines { display: none; } }
.matrix { position: relative; display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin: 20px 0 30px 28px; padding-bottom: 26px; }
.mx { padding: 18px; border-radius: 12px; border: 1px solid var(--line-2); min-height: 110px; }
.mx b { display: block; color: #fff; font-family: var(--f-display); font-size: 1.05rem; }
.mx span { display: block; color: var(--muted); font-size: .84rem; }
.mx em { display: inline-block; margin-top: 8px; font: 600 .68rem var(--f-mono); font-style: normal; letter-spacing: .1em; text-transform: uppercase; }
.mx.q1 { background: rgba(52,211,153,.08); border-color: rgba(52,211,153,.4); } .mx.q1 em { color: var(--green); }
.mx.q2 { background: rgba(167,139,250,.07); } .mx.q2 em { color: var(--violet); }
.mx.q3 { background: rgba(96,165,250,.05); } .mx.q3 em { color: var(--blue); }
.mx.q4 { background: rgba(248,113,113,.06); border-color: rgba(248,113,113,.3); } .mx.q4 em { color: var(--red); }
.mx-y { position: absolute; left: -30px; top: 50%; transform: rotate(-90deg) translateX(50%); transform-origin: left; font: 600 .66rem var(--f-mono); color: var(--dim); letter-spacing: .12em; }
.mx-x { position: absolute; right: 0; bottom: 0; font: 600 .66rem var(--f-mono); color: var(--dim); letter-spacing: .12em; }
.timeline { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 20px 0 26px; }
.tl-col { border: 1px solid var(--line-2); border-radius: var(--r); padding: 18px; background: var(--panel); position: relative; }
.tl-badge { display: inline-block; font: 600 .7rem var(--f-mono); letter-spacing: .1em; padding: 3px 10px; border-radius: 99px; background: var(--grad); color: #050712; margin-bottom: 10px; }
.tl-col ul { font-size: .9rem; padding-left: 1.1em !important; margin: 0 !important; }
@media (max-width: 760px) { .timeline { grid-template-columns: 1fr; } }

/* takeaways / quiz / links / complete */
.takeaways { margin: 48px 0 32px; padding: 24px 26px; border-radius: var(--r-lg); background: var(--grad-soft); border: 1px solid var(--line-2); }
.takeaways h2 { font-size: 1.25rem; }
.takeaways ul { list-style: none; margin: 0; padding: 0; }
.takeaways li { position: relative; padding: 8px 0 8px 30px; color: var(--text); border-bottom: 1px dashed rgba(255,255,255,.07); }
.takeaways li:last-child { border-bottom: 0; }
.takeaways li::before { content: "✓"; position: absolute; left: 0; top: 8px; width: 20px; height: 20px; border-radius: 6px; display: grid; place-items: center; font-size: .72rem; background: var(--green); color: #04130c; font-weight: 700; }
.quiz { margin: 32px 0; padding: 26px; border-radius: var(--r-lg); border: 1px solid var(--line-2); background: var(--panel); }
.quiz-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.quiz-head h2 { font-size: 1.25rem; margin: 0; }
.quiz-score { font: 700 .9rem var(--f-mono); color: var(--cyan); padding: 4px 12px; border-radius: 99px; border: 1px solid var(--line-2); }
.q { padding: 18px 0; border-bottom: 1px solid var(--line); }
.q:last-child { border-bottom: 0; padding-bottom: 0; }
.q-text { color: #fff; font-weight: 600; display: flex; gap: 10px; }
.q-text span { font: 700 .74rem/1.9 var(--f-mono); color: var(--accent); flex: none; }
.q-options { display: grid; gap: 8px; }
.q-opt { display: flex; align-items: center; gap: 12px; text-align: left; width: 100%; padding: 11px 14px; border-radius: 10px; border: 1px solid var(--line-2); background: var(--bg-1); color: var(--text-2); font: 400 .94rem var(--f-body); cursor: pointer; transition: .15s; }
.q-opt:hover:not(:disabled) { border-color: var(--line-3); color: #fff; }
.q-letter { flex: none; width: 24px; height: 24px; border-radius: 6px; display: grid; place-items: center; font: 600 .72rem var(--f-mono); background: var(--panel-2); color: var(--muted); }
.q-opt.correct { border-color: var(--green); background: rgba(52,211,153,.08); color: #fff; } .q-opt.correct .q-letter { background: var(--green); color: #04130c; }
.q-opt.wrong { border-color: var(--red); background: rgba(248,113,113,.08); } .q-opt.wrong .q-letter { background: var(--red); color: #1a0505; }
.q-opt:disabled { cursor: default; }
.q-why { margin: 12px 0 0 !important; padding: 10px 14px; border-radius: 8px; background: var(--bg-2); color: var(--text-2); font-size: .9rem; border-left: 3px solid var(--cyan); }
.links-sec h2 { font-size: 1.25rem; }
.link-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.link-card { display: flex; gap: 12px; align-items: flex-start; padding: 14px 16px; border-radius: 12px; border: 1px solid var(--line); background: var(--panel); color: var(--text); transition: .15s; }
.link-card:hover { text-decoration: none; border-color: var(--cyan); background: var(--panel-2); }
.lc-icon { flex: none; width: 30px; height: 30px; border-radius: 8px; display: grid; place-items: center; background: rgba(34,211,238,.1); color: var(--cyan); font-family: var(--f-mono); }
.lc-body b { display: block; font-size: .92rem; line-height: 1.35; }
.lc-body small { color: var(--muted); font-size: .8rem; }
@media (max-width: 640px) { .link-cards { grid-template-columns: 1fr; } }
.complete-bar { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; margin: 40px 0 24px; padding: 20px 22px; border-radius: var(--r-lg); border: 1px dashed var(--line-3); }
.complete-bar b { display: block; font-family: var(--f-display); color: #fff; }
.complete-bar small { color: var(--muted); }
.complete-bar .btn.is-done { background: rgba(52,211,153,.12); color: var(--green); border: 1px solid var(--green); box-shadow: none; }
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.pager a { padding: 16px 18px; border-radius: 12px; border: 1px solid var(--line); background: var(--panel); color: var(--text); transition: .15s; }
.pager a:hover { text-decoration: none; border-color: var(--line-3); }
.pager small { display: block; font: 500 .74rem var(--f-mono); color: var(--muted); margin-bottom: 4px; }
.pager b { font-family: var(--f-display); }
.pager-next { text-align: right; }
@media (max-width: 560px) { .pager { grid-template-columns: 1fr; } .pager-next { text-align: left; } }

/* ---------- LAB ---------- */
.lab { padding: 36px 0 90px; }
.lab-grid { display: grid; grid-template-columns: 250px minmax(0, 1fr); gap: 28px; align-items: start; max-width: 1400px; }
.lab-nav { position: sticky; top: calc(var(--topbar) + 20px); display: flex; flex-direction: column; gap: 4px; }
.lab-nav a { display: flex; gap: 12px; align-items: center; padding: 10px 12px; border-radius: 10px; color: var(--text-2); border: 1px solid transparent; transition: .15s; }
.lab-nav a:hover { text-decoration: none; background: var(--panel); color: #fff; }
.lab-nav a.active { background: var(--panel); border-color: var(--line-2); color: #fff; box-shadow: inset 3px 0 0 var(--cyan); }
.ln-icon { width: 34px; height: 34px; border-radius: 9px; display: grid; place-items: center; background: var(--bg-2); border: 1px solid var(--line); flex: none; }
.lab-nav b { display: block; font-size: .9rem; font-weight: 600; }
.lab-nav small { font: 500 .68rem var(--f-mono); color: var(--dim); }
@media (max-width: 960px) {
  .lab-grid { grid-template-columns: 1fr; }
  .lab-nav { position: sticky; top: var(--topbar); z-index: 20; flex-direction: row; overflow-x: auto; background: rgba(4,6,12,.92); backdrop-filter: blur(10px); padding: 10px 0; margin: 0 -24px; padding-left: 24px; scrollbar-width: none; }
  .lab-nav a { flex: none; padding: 8px 12px; }
  .lab-nav small { display: none; }
  .ln-icon { width: 28px; height: 28px; }
}
.demo-head { margin-bottom: 20px; }
.demo-cat { font: 500 .74rem var(--f-mono); color: var(--cyan); letter-spacing: .08em; }
.demo-head h2 { margin: 6px 0 6px; }
.demo-head p { color: var(--text-2); margin: 0; max-width: 760px; }
.demo.active { animation: fadeUp .35s var(--ease); }
.mock { background: #060a14; border: 1px solid var(--line-2); border-radius: var(--r-lg); overflow: hidden; box-shadow: var(--shadow), 0 0 60px -30px rgba(34,211,238,.5); }
.mock-bar { display: flex; align-items: center; gap: 10px; padding: 11px 16px; border-bottom: 1px solid var(--line); background: #0a101d; font: 500 .76rem var(--f-mono); color: var(--text-2); flex-wrap: wrap; }
.mock-bar .right { margin-left: auto; color: var(--dim); display: flex; align-items: center; gap: 8px; }
.demo-info { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 14px; margin-top: 18px; }
.di-block { padding: 18px; border-radius: var(--r); border: 1px solid var(--line); background: var(--panel); min-width: 0; }
.di-block h4 { font: 600 .7rem var(--f-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--dim); margin-bottom: 10px; }
.di-block p { font-size: .9rem; color: var(--text-2); margin: 0; }
.di-block .tags { margin-bottom: 16px; }
.di-block .flow { margin: 0; padding: 12px 10px; }
.di-block .flow-node { flex-basis: 96px; padding: 8px; }
.di-block .flow-node b { font-size: .76rem; }
.di-block .flow-edge { flex-basis: 14px; }
.di-lesson { display: flex; gap: 10px; align-items: center; padding: 8px 10px; border-radius: 8px; color: var(--text); font-size: .88rem; border: 1px solid var(--line); margin-bottom: 6px; background: var(--bg-1); }
.di-lesson:hover { text-decoration: none; border-color: var(--cyan); }
.di-lesson span { font: 700 .72rem var(--f-mono); color: var(--cyan); }
@media (max-width: 1100px) { .demo-info { grid-template-columns: 1fr 1fr; } .di-how { grid-column: 1 / -1; } }
@media (max-width: 620px) { .demo-info { grid-template-columns: 1fr; } }

/* chat */
.chat-log { height: 360px; overflow-y: auto; padding: 18px; display: flex; flex-direction: column; gap: 10px; scrollbar-width: thin; scrollbar-color: var(--line-2) transparent; }
.msg { max-width: 80%; padding: 10px 14px; border-radius: 14px; font-size: .92rem; line-height: 1.5; animation: fadeUp .25s var(--ease); }
.msg.bot { background: var(--panel-2); border: 1px solid var(--line); border-top-left-radius: 4px; align-self: flex-start; }
.msg.user { background: linear-gradient(120deg, rgba(34,211,238,.18), rgba(167,139,250,.2)); border: 1px solid rgba(34,211,238,.28); border-top-right-radius: 4px; align-self: flex-end; color: #fff; }
.msg .meta { display: block; font: 500 .64rem var(--f-mono); color: var(--dim); margin-top: 6px; }
.msg .toolcall { display: block; margin-top: 8px; font: 500 .72rem var(--f-mono); color: var(--cyan); background: rgba(34,211,238,.07); border: 1px dashed rgba(34,211,238,.3); padding: 6px 8px; border-radius: 6px; }
.msg .toolcall.esc { color: var(--pink); background: rgba(244,114,182,.07); border-color: rgba(244,114,182,.35); }
.typing span { display: inline-block; width: 6px; height: 6px; margin-right: 3px; border-radius: 50%; background: var(--muted); animation: bounce 1s infinite; }
.typing span:nth-child(2) { animation-delay: .15s; } .typing span:nth-child(3) { animation-delay: .3s; }
@keyframes bounce { 50% { transform: translateY(-4px); opacity: .4; } }
.chips { display: flex; gap: 6px; flex-wrap: wrap; padding: 0 16px 12px; }
.chat-input { display: flex; gap: 8px; padding: 12px; border-top: 1px solid var(--line); }
.chat-input input, .rag-ask input { flex: 1; min-width: 0; background: var(--bg-2); border: 1px solid var(--line-2); border-radius: 10px; padding: 11px 14px; color: var(--text); font: 400 .92rem var(--f-body); outline: none; }
.chat-input input:focus, .rag-ask input:focus { border-color: var(--cyan); }
.chat-input button { background: var(--grad); border: 0; border-radius: 10px; padding: 0 18px; font-weight: 700; color: #050712; cursor: pointer; }

/* agent console */
.agent-controls, .wf-controls { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; padding: 12px 16px; border-bottom: 1px solid var(--line); }
.agent-controls label, .wf-controls label { font: 500 .72rem var(--f-mono); color: var(--dim); letter-spacing: .1em; text-transform: uppercase; }
.agent-controls select, .wf-controls select { flex: 1; min-width: 200px; background: var(--bg-2); color: var(--text); border: 1px solid var(--line-2); border-radius: 8px; padding: 8px 10px; font: 400 .88rem var(--f-body); }
.ac-grid { display: grid; grid-template-columns: 190px 1fr; min-height: 380px; font: 400 .78rem/1.6 var(--f-mono); }
.ac-side { border-right: 1px solid var(--line); padding: 14px; background: #080d19; }
.ac-side h5 { margin: 0 0 8px; font: 600 .64rem var(--f-mono); color: var(--dim); letter-spacing: .14em; }
.ac-side h5:not(:first-child) { margin-top: 16px; }
.atool { display: flex; align-items: center; gap: 8px; padding: 5px 8px; border-radius: 6px; color: var(--muted); margin-bottom: 3px; transition: .2s; }
.atool i { width: 6px; height: 6px; border-radius: 50%; background: var(--dim); flex: none; }
.atool.on { color: var(--text-2); }
.atool.on i { background: var(--green); }
.atool.hot { background: rgba(34,211,238,.12); color: var(--cyan); }
.atool.hot i { box-shadow: 0 0 8px var(--cyan); background: var(--cyan); }
.ac-main { padding: 14px 16px; overflow-y: auto; max-height: 440px; }
.ac-line { display: flex; gap: 10px; padding: 7px 0; border-bottom: 1px dashed rgba(36,52,83,.6); animation: fadeUp .3s var(--ease); color: var(--text-2); }
.ac-line .t { color: var(--dim); flex: none; }
.atag { flex: none; display: inline-block; width: 56px; text-align: center; padding: 1px 0; border-radius: 5px; font-size: .64rem; font-weight: 600; height: fit-content; }
.atag.a-think { background: rgba(167,139,250,.15); color: var(--violet); } .atag.a-tool { background: rgba(34,211,238,.14); color: var(--cyan); } .atag.a-obs { background: rgba(251,191,36,.12); color: var(--amber); } .atag.a-done { background: rgba(52,211,153,.14); color: var(--green); } .atag.a-hitl { background: rgba(244,114,182,.14); color: var(--pink); }
.approve-box { margin: 10px 0; padding: 12px; border-radius: 10px; border: 1px solid rgba(244,114,182,.4); background: rgba(244,114,182,.06); font-family: var(--f-body); }
.approve-box p { margin: 0 0 10px; color: var(--text); font-size: .88rem; }
.approve-box .row { display: flex; gap: 8px; }
@media (max-width: 680px) { .ac-grid { grid-template-columns: 1fr; } .ac-side { border-right: 0; border-bottom: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: 4px; } .ac-side h5 { width: 100%; } }

/* workflow canvas */
.wf-canvas { display: flex; align-items: center; gap: 22px; padding: 30px 20px; overflow-x: auto; background: radial-gradient(circle, rgba(132,148,183,.14) 1px, transparent 1.2px) 0 0/16px 16px, #070b16; }
.wf-node { flex: none; position: relative; min-width: 118px; padding: 12px; border-radius: 12px; background: var(--panel); border: 1px solid var(--line-2); border-left: 3px solid var(--line-3); transition: .3s; }
.wf-node.trig { border-left-color: var(--green); } .wf-node.ai { border-left-color: var(--violet); } .wf-node.hum { border-left-color: var(--amber); } .wf-node.out { border-left-color: var(--cyan); }
.wf-node .ft { font: 600 .6rem var(--f-mono); color: var(--dim); letter-spacing: .12em; }
.wf-node b { display: block; font-size: .84rem; color: #fff; }
.wf-node:not(:last-child)::after { content: ""; position: absolute; right: -23px; top: 50%; width: 22px; height: 2px; background: var(--line-3); }
.wf-node.running { box-shadow: var(--glow); border-color: var(--cyan); }
.wf-node.ok::before { content: "✓"; position: absolute; top: -9px; right: -9px; width: 20px; height: 20px; border-radius: 50%; display: grid; place-items: center; background: var(--green); color: #04130c; font-size: .7rem; font-weight: 700; }
.wf-node.skip { opacity: .35; }
.wf-node.ok:not(:last-child)::after { background: var(--cyan); }
.wf-output { border-top: 1px solid var(--line); }
.wf-out-head { padding: 8px 16px; font: 600 .66rem var(--f-mono); letter-spacing: .12em; color: var(--dim); background: #0a101d; }
.wf-out-head span { color: var(--cyan); margin-left: 8px; }
.wf-output pre, .json { margin: 0; padding: 14px 16px; font: 400 .78rem/1.65 var(--f-mono); color: #cfdaf5; white-space: pre-wrap; word-break: break-word; min-height: 150px; max-height: 280px; overflow: auto; }

/* rag */
.rag-ask { display: flex; gap: 8px; padding: 14px 16px 10px; }
.rag-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border-top: 1px solid var(--line); min-height: 280px; }
.rag-cols > div { padding: 14px 16px; min-width: 0; }
.rag-cols > div:first-child { border-right: 1px solid var(--line); }
.rag-cols h5 { margin: 0 0 10px; font: 600 .64rem var(--f-mono); color: var(--dim); letter-spacing: .14em; }
.hit { padding: 10px 12px; border-radius: 10px; border: 1px solid var(--line); background: var(--bg-2); margin-bottom: 8px; font-size: .84rem; animation: fadeUp .3s var(--ease); }
.hit-top { display: flex; justify-content: space-between; font: 500 .7rem var(--f-mono); color: var(--muted); margin-bottom: 4px; }
.hit-top b { color: var(--cyan); }
.hit .bar { height: 4px; background: var(--line); border-radius: 9px; margin-top: 6px; overflow: hidden; }
.hit .bar i { display: block; height: 100%; background: var(--grad); }
.hit.low { opacity: .5; }
.rag-answer { font-size: .94rem; color: var(--text); line-height: 1.6; }
.rag-answer sup { color: var(--cyan); font-family: var(--f-mono); font-weight: 600; }
@media (max-width: 700px) { .rag-cols { grid-template-columns: 1fr; } .rag-cols > div:first-child { border-right: 0; border-bottom: 1px solid var(--line); } }

/* triage */
.triage-grid { display: grid; grid-template-columns: 1.1fr 1fr; min-height: 380px; }
#triage-list { border-right: 1px solid var(--line); }
.mail { display: grid; grid-template-columns: 1fr auto; gap: 4px 10px; padding: 12px 16px; border-bottom: 1px solid var(--line); cursor: pointer; transition: .15s; width: 100%; text-align: left; background: none; border-left: 3px solid transparent; color: var(--text); font: inherit; }
.mail:hover { background: rgba(255,255,255,.02); }
.mail.sel { background: var(--panel); border-left-color: var(--cyan); }
.mail b { font-size: .88rem; }
.mail .subj { grid-column: 1; font-size: .84rem; color: var(--text-2); }
.mail .prev { grid-column: 1 / -1; font-size: .78rem; color: var(--dim); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mlabel { grid-row: 1; grid-column: 2; font: 600 .62rem var(--f-mono); padding: 2px 8px; border-radius: 99px; height: fit-content; opacity: 0; transition: .3s; }
.mail.tagged .mlabel { opacity: 1; }
.ml-urgent { color: var(--red); background: rgba(248,113,113,.12); } .ml-lead { color: var(--green); background: rgba(52,211,153,.12); } .ml-fin { color: var(--cyan); background: rgba(34,211,238,.12); } .ml-sup { color: var(--amber); background: rgba(251,191,36,.12); } .ml-low { color: var(--dim); background: rgba(90,106,142,.15); }
.triage-detail { padding: 18px; font-size: .9rem; }
.triage-detail h4 { margin-bottom: 4px; }
.td-meta { display: flex; flex-wrap: wrap; gap: 6px; margin: 8px 0 14px; }
.td-draft { padding: 12px 14px; border-radius: 10px; background: var(--bg-2); border: 1px solid var(--line-2); white-space: pre-wrap; color: var(--text-2); font-size: .86rem; }
.td-draft-h { font: 600 .64rem var(--f-mono); letter-spacing: .12em; color: var(--violet); margin: 14px 0 6px; }
@media (max-width: 760px) { .triage-grid { grid-template-columns: 1fr; } #triage-list { border-right: 0; border-bottom: 1px solid var(--line); } }

/* document */
.doc-tabs { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; padding: 12px 16px; border-bottom: 1px solid var(--line); }
.doc-tabs .btn { margin-left: auto; }
.doc-split { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; padding: 16px; }
.doc-paper { background: #eef2f9; color: #1a2233; border-radius: 8px; padding: 18px; font: 400 .76rem/1.75 var(--f-mono); position: relative; overflow: hidden; min-height: 260px; box-shadow: 0 10px 30px -10px rgba(0,0,0,.7); white-space: pre-wrap; }
.doc-paper .hl { background: rgba(167,139,250,.0); border-radius: 3px; transition: background .4s; padding: 0 2px; }
.doc-paper.scanned .hl { background: rgba(167,139,250,.35); }
.scanline { position: absolute; left: 0; right: 0; height: 50px; background: linear-gradient(180deg, transparent, rgba(34,211,238,.45), transparent); top: -50px; }
.doc-paper.scanning .scanline { animation: scan 1.4s ease-in-out; }
@keyframes scan { to { top: 100%; } }
.json { border: 1px solid var(--line); border-radius: 8px; background: #050912; min-height: 260px; max-height: none; }
@media (max-width: 700px) { .doc-split { grid-template-columns: 1fr; } }

/* voice */
.voice-stage { display: flex; flex-direction: column; align-items: center; gap: 14px; padding: 22px; border-bottom: 1px solid var(--line); }
.wave { display: flex; align-items: center; gap: 3px; height: 70px; }
.wave i { width: 4px; height: 8px; border-radius: 4px; background: var(--grad); transition: height .12s; }
.voice-log { padding: 14px 18px; min-height: 220px; font-size: .9rem; }
.vl { display: flex; gap: 10px; padding: 7px 0; animation: fadeUp .3s var(--ease); }
.vl .who { flex: none; font: 600 .68rem/1.9 var(--f-mono); width: 64px; }
.vl.caller .who { color: var(--cyan); } .vl.ai .who { color: var(--violet); } .vl.tool .who { color: var(--green); }
.vl.tool { font-family: var(--f-mono); font-size: .78rem; color: var(--green); }

/* analytics */
.sql { min-height: 0; border-radius: 0; border: 0; border-bottom: 1px solid var(--line); color: var(--violet); }
.an-chart { padding: 18px 18px 8px; min-height: 220px; }
.an-chart svg { width: 100%; height: 220px; display: block; }
.an-chart .axis { stroke: var(--line-2); } .an-chart text { fill: var(--muted); font: 500 10px var(--f-mono); }
.an-chart .bar { fill: url(#barGrad); transition: height .5s, y .5s; }
.an-chart .val { fill: var(--text-2); font-size: 10px; }
.an-insight { margin: 0; padding: 0 18px 18px; color: var(--text); font-size: .92rem; }
.an-insight:not(:empty)::before { content: "✦ Insight: "; color: var(--violet); font-weight: 600; }

/* content engine */
.content-out { padding: 18px; min-height: 260px; font-size: .94rem; line-height: 1.65; white-space: pre-wrap; color: var(--text); }

/* multi-agent */
.ma-agents { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; padding: 16px; border-bottom: 1px solid var(--line); }
.ma-agent { text-align: center; padding: 14px 8px; border-radius: 12px; border: 1px solid var(--line-2); background: var(--panel); transition: .3s; }
.ma-agent span { font-size: 1.4rem; display: block; }
.ma-agent b { display: block; font-size: .86rem; margin-top: 4px; }
.ma-agent small { font: 500 .66rem var(--f-mono); color: var(--dim); }
.ma-agent.active { border-color: var(--cyan); box-shadow: var(--glow); }
.ma-agent.active small { color: var(--cyan); }
.ma-feed { padding: 14px 16px; min-height: 260px; max-height: 360px; overflow-y: auto; }
.ma-msg { padding: 10px 12px; border-radius: 10px; background: var(--bg-2); border: 1px solid var(--line); margin-bottom: 8px; font-size: .86rem; animation: fadeUp .3s var(--ease); }
.ma-msg b { font: 600 .7rem var(--f-mono); color: var(--cyan); display: block; margin-bottom: 2px; }
@media (max-width: 600px) { .ma-agents { grid-template-columns: 1fr 1fr; } }

/* local terminal */
.local-term { padding: 16px 18px; min-height: 300px; font: 400 .8rem/1.7 var(--f-mono); color: #c7d5f2; white-space: pre-wrap; background: #03060d; max-height: 420px; overflow-y: auto; }
.terminal-mock .chips { padding: 12px 16px; border-bottom: 1px solid var(--line); }

/* ---------- TOOLKIT ---------- */
.tool-jump { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 28px; }
.tool-jump a { display: grid; grid-template-columns: auto 1fr; gap: 2px 12px; padding: 14px; border-radius: 12px; border: 1px solid var(--line); background: var(--panel); color: var(--text); }
.tool-jump a:hover { text-decoration: none; border-color: var(--cyan); }
.tool-jump span { grid-row: span 2; font-size: 1.3rem; }
.tool-jump b { font-size: .92rem; }
.tool-jump small { color: var(--muted); font-size: .8rem; line-height: 1.4; }
@media (max-width: 860px) { .tool-jump { grid-template-columns: 1fr 1fr; } }
@media (max-width: 540px) { .tool-jump { grid-template-columns: 1fr; } }
.toolkit { padding-bottom: 80px; }
.tool { padding: 64px 0 20px; border-bottom: 1px solid var(--line); scroll-margin-top: var(--topbar); }
.tool:last-child { border-bottom: 0; }
.tool-head { display: flex; gap: 16px; align-items: flex-start; margin-bottom: 26px; }
.tool-head > span { width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center; font-size: 1.5rem; background: var(--grad-soft); border: 1px solid var(--line-2); flex: none; }
.tool-head h2 { margin-bottom: .2em; }
.tool-head p { color: var(--muted); margin: 0; }
.field { margin-bottom: 16px; }
.field label, .field-label { display: flex; justify-content: space-between; gap: 8px; font: 600 .84rem var(--f-body); color: var(--text); margin-bottom: 7px; }
.field label small { font-weight: 400; color: var(--dim); }
.field label output { font: 600 .84rem var(--f-mono); color: var(--cyan); }
.field input:not([type=range]):not([type=checkbox]), .field textarea, .field select {
  width: 100%; background: var(--bg-2); border: 1px solid var(--line-2); border-radius: 10px; padding: 10px 12px; color: var(--text); font: 400 .92rem/1.5 var(--f-body); outline: none; resize: vertical; transition: border-color .15s;
}
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--cyan); }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
input[type=range] { width: 100%; accent-color: var(--cyan); }
.check { display: flex; gap: 10px; align-items: center; font-size: .9rem; color: var(--text-2); margin: 8px 0; cursor: pointer; }
.check input { accent-color: var(--cyan); width: 16px; height: 16px; }
.pb { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.pb-out .code { margin: 0; position: sticky; top: calc(var(--topbar) + 16px); }
.pb-out pre { min-height: 460px; white-space: pre-wrap; }
@media (max-width: 900px) { .pb { grid-template-columns: 1fr; } .pb-out pre { min-height: 0; } }
.filter-bar { display: flex; align-items: center; gap: 14px; margin-bottom: 14px; flex-wrap: wrap; }
.sticky-filter { position: sticky; top: calc(var(--topbar) + 8px); z-index: 20; background: rgba(4,6,12,.85); backdrop-filter: blur(10px); padding: 8px 0; }
.search-field { flex: 1; min-width: 240px; display: flex; align-items: center; gap: 10px; padding: 0 14px; border-radius: 12px; border: 1px solid var(--line-2); background: var(--panel); }
.search-field:focus-within { border-color: var(--cyan); box-shadow: var(--glow); }
.search-field span { font: 600 .86rem var(--f-mono); color: var(--cyan); }
.search-field input { flex: 1; background: none; border: 0; outline: none; color: var(--text); padding: 13px 0; font: 400 .92rem var(--f-mono); min-width: 0; }
.count { font: 500 .8rem var(--f-mono); color: var(--muted); }
.prompt-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.prompt-card { margin: 0; display: flex; flex-direction: column; }
.prompt-card pre { white-space: pre-wrap; max-height: 280px; font-size: .78rem; flex: 1; }
.pc-cat { font: 600 .62rem var(--f-mono); letter-spacing: .1em; padding: 2px 8px; border-radius: 99px; background: rgba(167,139,250,.14); color: var(--violet); text-transform: uppercase; flex: none; }
.prompt-card .code-title { font-weight: 600; color: #fff; }
@media (max-width: 860px) { .prompt-grid { grid-template-columns: 1fr; } }
.roi { display: grid; grid-template-columns: 1.1fr 1fr; gap: 28px; }
.roi-out { padding: 26px; border-radius: var(--r-lg); border: 1px solid var(--line-2); background: var(--panel); align-self: start; position: sticky; top: calc(var(--topbar) + 16px); }
.roi-big { font: 700 2.6rem/1.1 var(--f-mono); margin-bottom: 16px; }
.roi-bars div { display: grid; grid-template-columns: 50px 1fr; align-items: center; gap: 10px; font: 500 .74rem var(--f-mono); color: var(--muted); margin-bottom: 6px; }
.roi-bars i { display: block; height: 10px; border-radius: 9px; background: var(--grad); transition: width .4s var(--ease); }
.roi-bars div:nth-child(2) i { background: var(--red); opacity: .7; }
.roi-list { margin: 16px 0; }
.roi-list div { display: flex; justify-content: space-between; padding: 9px 0; border-bottom: 1px dashed var(--line-2); font-size: .9rem; }
.roi-list dt { color: var(--muted); }
.roi-list dd { margin: 0; font: 600 .9rem var(--f-mono); color: #fff; }
@media (max-width: 860px) { .roi { grid-template-columns: 1fr; } .roi-out { position: static; } }
.mp { display: grid; grid-template-columns: 1fr 1.2fr; gap: 28px; }
.seg { display: flex; flex-wrap: wrap; gap: 6px; }
.seg button { padding: 9px 14px; border-radius: 9px; border: 1px solid var(--line-2); background: var(--bg-2); color: var(--text-2); font: 500 .86rem var(--f-body); cursor: pointer; }
.seg button:hover { border-color: var(--line-3); color: #fff; }
.seg button.active { background: rgba(34,211,238,.12); border-color: var(--cyan); color: var(--cyan); }
.mp-out { padding: 22px; border-radius: var(--r-lg); border: 1px solid var(--line-2); background: var(--panel); }
.mp-model { display: grid; grid-template-columns: 1fr auto; gap: 4px 12px; padding: 12px 0; border-bottom: 1px dashed var(--line-2); }
.mp-model:last-of-type { border-bottom: 0; }
.mp-model b { font-family: var(--f-mono); color: #fff; }
.mp-model span { font: 500 .72rem var(--f-mono); color: var(--green); }
.mp-model p { grid-column: 1 / -1; margin: 0; font-size: .86rem; color: var(--muted); }
.mp-out .code { margin: 14px 0 0; }
@media (max-width: 860px) { .mp { grid-template-columns: 1fr; } }
.prio { display: grid; grid-template-columns: 1fr 1.2fr; gap: 28px; }
.prio-form { padding: 22px; border-radius: var(--r-lg); border: 1px solid var(--line-2); background: var(--panel); align-self: start; }
.prio-sliders { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 16px; margin-bottom: 16px; }
.prio-sliders label { font: 500 .78rem var(--f-mono); color: var(--muted); }
.prio-matrix { position: relative; aspect-ratio: 1.4; border-radius: var(--r-lg); border: 1px solid var(--line-2); background: linear-gradient(var(--line) 1px, transparent 1px) 0 50%/100% 50% no-repeat, linear-gradient(90deg, var(--line) 1px, transparent 1px) 50% 0/50% 100% no-repeat, var(--bg-1); overflow: hidden; }
.prio-matrix::before { content: ""; position: absolute; left: 50%; top: 0; bottom: 0; width: 1px; background: var(--line-2); }
.prio-matrix::after { content: ""; position: absolute; top: 50%; left: 0; right: 0; height: 1px; background: var(--line-2); }
.pq { position: absolute; font: 600 .7rem var(--f-mono); letter-spacing: .08em; text-transform: uppercase; padding: 10px 12px; }
.pq.q1 { left: 0; top: 0; color: var(--green); } .pq.q2 { right: 0; top: 0; color: var(--violet); } .pq.q3 { left: 0; bottom: 0; color: var(--blue); } .pq.q4 { right: 0; bottom: 0; color: var(--red); }
.ax { display: none; }
.pdot { position: absolute; transform: translate(-50%, 50%); width: 28px; height: 28px; border-radius: 50%; background: var(--grad); color: #050712; display: grid; place-items: center; font: 700 .74rem var(--f-mono); box-shadow: 0 0 0 4px rgba(4,6,12,.8); z-index: 2; animation: fadeUp .3s; }
.prio-list { margin: 14px 0 0; padding: 0; list-style: none; counter-reset: pl; }
.prio-list li { counter-increment: pl; display: grid; grid-template-columns: 28px 1fr auto auto; gap: 10px; align-items: center; padding: 10px 12px; border-radius: 10px; border: 1px solid var(--line); background: var(--panel); margin-bottom: 6px; font-size: .9rem; }
.prio-list li::before { content: counter(pl); font: 700 .74rem var(--f-mono); width: 24px; height: 24px; border-radius: 50%; display: grid; place-items: center; background: var(--grad); color: #050712; }
.prio-list .score { font: 700 .8rem var(--f-mono); color: var(--cyan); }
.prio-list .quad { font: 600 .66rem var(--f-mono); padding: 2px 8px; border-radius: 99px; background: var(--bg-2); color: var(--muted); }
.prio-list button { background: none; border: 0; color: var(--dim); cursor: pointer; font-size: 1rem; }
@media (max-width: 860px) { .prio { grid-template-columns: 1fr; } }
.ready { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.rq { padding: 16px; border-radius: 12px; border: 1px solid var(--line); background: var(--panel); }
.rq p { margin: 0 0 10px; font-weight: 600; color: #fff; font-size: .94rem; }
.rq .seg button { font-size: .8rem; padding: 7px 11px; }
.ready-actions { grid-column: 1 / -1; display: flex; justify-content: flex-end; }
.ready-result { margin-top: 20px; padding: 26px; border-radius: var(--r-lg); border: 1px solid var(--line-2); background: var(--grad-soft); }
.ready-result .rr-score { font: 700 3rem/1 var(--f-mono); }
.ready-result ul { padding-left: 1.2em; color: var(--text-2); }
@media (max-width: 760px) { .ready { grid-template-columns: 1fr; } }

/* ---------- BUSINESS ---------- */
.levers { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.levers div { padding: 22px; border-radius: var(--r-lg); border: 1px solid var(--line); background: var(--panel); }
.levers span { font-size: 1.6rem; }
.levers h3 { margin: 10px 0 4px; }
.levers p { color: var(--muted); font-size: .9rem; margin: 0; }
@media (max-width: 860px) { .levers { grid-template-columns: 1fr 1fr; } }
.ind-tabs { border-bottom: 0; gap: 8px; margin-bottom: 22px; }
.ind-tabs .tab { border: 1px solid var(--line-2); border-radius: 10px; padding: 9px 14px; margin: 0; font: 500 .86rem var(--f-body); color: var(--text-2); display: flex; gap: 8px; align-items: center; background: var(--panel); }
.ind-tabs .tab.active { background: rgba(34,211,238,.1); border-color: var(--cyan); color: #fff; }
.ind-pain { display: flex; gap: 14px; align-items: baseline; padding: 14px 18px; border-radius: 12px; background: rgba(248,113,113,.05); border: 1px solid rgba(248,113,113,.2); margin-bottom: 18px; }
.ind-pain span { font: 600 .66rem var(--f-mono); letter-spacing: .12em; color: var(--red); flex: none; }
.ind-pain p { margin: 0; color: var(--text-2); }
.usecases { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 14px; }
.usecase { padding: 20px; border-radius: var(--r-lg); border: 1px solid var(--line); background: var(--panel); display: flex; flex-direction: column; }
.uc-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.uc-k { font: 600 .68rem var(--f-mono); letter-spacing: .08em; color: var(--green); }
.usecase h3 { font-size: 1.06rem; }
.usecase p { color: var(--muted); font-size: .9rem; }
.uc-lessons { margin-top: auto; display: flex; flex-direction: column; gap: 4px; }
.uc-lessons a { font: 500 .78rem var(--f-mono); }
.diff { display: inline-flex; gap: 3px; vertical-align: middle; }
.diff i { width: 14px; height: 6px; border-radius: 3px; background: var(--line-2); }
.diff i.on { background: var(--amber); }
.legend { margin-top: 18px; display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.dept-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.dept { padding: 22px; border-radius: var(--r-lg); border: 1px solid var(--line); background: var(--panel); }
.dept h3 { display: flex; gap: 10px; align-items: center; }
.dept ul { margin: 0; padding-left: 1.1em; color: var(--text-2); font-size: .92rem; }
.dept li { margin-bottom: 4px; }
.dept li::marker { color: var(--cyan); }
@media (max-width: 860px) { .dept-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .dept-grid, .levers { grid-template-columns: 1fr; } }
.start-steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; counter-reset: s; }
.start-steps a { padding: 20px; border-radius: var(--r-lg); border: 1px solid var(--line); background: var(--panel); color: var(--text); transition: .15s; }
.start-steps a:hover { text-decoration: none; border-color: var(--cyan); transform: translateY(-2px); }
.start-steps b { font: 700 1.4rem var(--f-mono); color: var(--cyan); }
.start-steps h3 { font-size: 1rem; margin: 8px 0 4px; }
.start-steps p { color: var(--muted); font-size: .86rem; margin: 0; }
@media (max-width: 960px) { .start-steps { grid-template-columns: 1fr 1fr; } }

/* ---------- RESOURCES / GLOSSARY ---------- */
.starter-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.starter { padding: 18px; border-radius: var(--r-lg); border: 1px solid rgba(34,211,238,.3); background: linear-gradient(135deg, rgba(34,211,238,.07), transparent), var(--panel); color: var(--text); display: flex; flex-direction: column; gap: 6px; }
.starter:hover { text-decoration: none; box-shadow: var(--glow); }
.starter b { font: 600 1.05rem var(--f-display); color: #fff; }
.starter span { color: var(--muted); font-size: .88rem; flex: 1; }
.starter em { font: 600 .74rem var(--f-mono); font-style: normal; color: var(--cyan); }
@media (max-width: 860px) { .starter-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 540px) { .starter-grid { grid-template-columns: 1fr; } }
.res-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.res { display: flex; flex-direction: column; padding: 18px; border-radius: var(--r-lg); border: 1px solid var(--line); background: var(--panel); color: var(--text); transition: .2s var(--ease); }
.res:hover { text-decoration: none; border-color: var(--cyan); transform: translateY(-2px); box-shadow: var(--shadow); }
.res-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.res-idx { font: 500 .7rem var(--f-mono); color: var(--dim); }
.res-cat { font: 600 .62rem var(--f-mono); letter-spacing: .06em; text-transform: uppercase; color: var(--violet); }
.res h3 { font-size: 1.02rem; margin-bottom: .35em; }
.res p { font-size: .87rem; color: var(--muted); margin: 0 0 12px; flex: 1; line-height: 1.55; }
.res-go { font: 600 .76rem var(--f-mono); color: var(--dim); transition: .15s; }
.res:hover .res-go { color: var(--cyan); }
@media (max-width: 960px) { .res-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .res-grid { grid-template-columns: 1fr; } }
.empty { text-align: center; padding: 40px; color: var(--muted); font-family: var(--f-mono); }
.az { display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 20px; }
.az a { width: 32px; height: 32px; display: grid; place-items: center; border-radius: 8px; border: 1px solid var(--line); font: 600 .8rem var(--f-mono); color: var(--text-2); }
.az a:hover { border-color: var(--cyan); color: var(--cyan); text-decoration: none; }
.gloss-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.term { position: relative; padding: 18px; border-radius: var(--r-lg); border: 1px solid var(--line); background: var(--panel); scroll-margin-top: calc(var(--topbar) + 80px); }
.term:target { border-color: var(--cyan); box-shadow: var(--glow); }
.term .anchor { position: absolute; top: calc(-1 * (var(--topbar) + 80px)); }
.term-top { display: flex; justify-content: space-between; gap: 8px; align-items: flex-start; }
.term h3 { font: 600 1rem var(--f-mono); color: var(--cyan); }
.term p { font-size: .9rem; color: var(--text-2); }
.term a { font: 500 .76rem var(--f-mono); }
@media (max-width: 960px) { .gloss-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .gloss-grid { grid-template-columns: 1fr; } }

/* ---------- 404 ---------- */
.nf { padding: 80px 0 60px; text-align: center; }
.nf .terminal { text-align: left; max-width: 560px; margin: 0 auto 30px; }
.nf h1 { font-size: 5rem; margin: 0; }
.nf .lead { margin: 0 auto; }

/* ---------- footer ---------- */
.footer { border-top: 1px solid var(--line); padding: 60px 0 28px; margin-top: 40px; background: linear-gradient(180deg, transparent, rgba(14,21,38,.5)); }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 36px; }
.footer-brand p { color: var(--muted); font-size: .92rem; margin: 14px 0; max-width: 320px; }
.sys-status { display: inline-flex; align-items: center; gap: 8px; font: 500 .74rem var(--f-mono); color: var(--text-2); padding: 6px 12px; border-radius: 99px; border: 1px solid var(--line-2); }
.footer h5 { font: 600 .7rem var(--f-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--cyan); margin: 6px 0 14px; }
.footer-grid > div > a:not(.brand) { display: block; color: var(--muted); font-size: .9rem; padding: 4px 0; }
.footer-grid > div > a:not(.brand):hover { color: #fff; text-decoration: none; }
.footer-bottom { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; margin-top: 44px; padding-top: 20px; border-top: 1px solid var(--line); font: 500 .74rem var(--f-mono); color: var(--dim); }
@media (max-width: 860px) { .footer-grid { grid-template-columns: 1fr 1fr; } .footer-brand { grid-column: 1 / -1; } }

/* ---------- palette (search) ---------- */
.palette { position: fixed; inset: 0; z-index: 100; display: flex; justify-content: center; align-items: flex-start; padding: 10vh 16px 16px; }
.palette-backdrop { position: absolute; inset: 0; background: rgba(2,4,8,.7); backdrop-filter: blur(6px); }
.palette-box { position: relative; width: 100%; max-width: 660px; border-radius: 16px; border: 1px solid var(--line-3); background: var(--bg-1); box-shadow: 0 30px 80px -20px rgba(0,0,0,.9), 0 0 0 1px rgba(34,211,238,.15); overflow: hidden; animation: fadeUp .2s var(--ease); }
.palette-input { display: flex; align-items: center; gap: 12px; padding: 0 16px; border-bottom: 1px solid var(--line); color: var(--cyan); }
.palette-input input { flex: 1; background: none; border: 0; outline: none; color: var(--text); font: 400 1.02rem var(--f-body); padding: 18px 0; min-width: 0; }
.palette-results { max-height: 56vh; overflow-y: auto; padding: 8px; }
.pr-group { font: 600 .64rem var(--f-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--dim); padding: 10px 10px 6px; }
.pr { display: grid; grid-template-columns: auto 1fr auto; gap: 2px 12px; align-items: center; padding: 10px 12px; border-radius: 10px; color: var(--text); }
.pr:hover, .pr.sel { background: var(--panel-2); text-decoration: none; }
.pr .pk { grid-row: span 2; font: 600 .62rem var(--f-mono); padding: 3px 7px; border-radius: 6px; background: var(--bg-2); color: var(--cyan); border: 1px solid var(--line-2); min-width: 66px; text-align: center; }
.pr b { font-size: .92rem; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pr small { grid-column: 2; color: var(--muted); font-size: .8rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pr .pe { grid-row: 1 / span 2; grid-column: 3; color: var(--dim); font-size: .8rem; }
.pr mark { background: rgba(34,211,238,.2); color: #fff; border-radius: 3px; }
.palette-empty { padding: 30px; text-align: center; color: var(--muted); font-size: .9rem; }
.palette-foot { display: flex; gap: 16px; padding: 10px 16px; border-top: 1px solid var(--line); font: 500 .72rem var(--f-mono); color: var(--dim); }
.palette-foot kbd { margin-right: 4px; }

.to-top { position: fixed; right: 20px; bottom: 20px; width: 44px; height: 44px; border-radius: 12px; border: 1px solid var(--line-2); background: var(--panel); color: var(--cyan); font: 700 1rem var(--f-mono); cursor: pointer; opacity: 0; pointer-events: none; transform: translateY(8px); transition: .3s; z-index: 40; }
.to-top.show { opacity: 1; pointer-events: auto; transform: none; }
.toast { position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, 20px); padding: 12px 18px; border-radius: 12px; background: var(--panel-2); border: 1px solid var(--green); color: #fff; font-size: .9rem; opacity: 0; pointer-events: none; transition: .3s var(--ease); z-index: 110; box-shadow: var(--shadow); }
.toast.show { opacity: 1; transform: translate(-50%, 0); }

.reveal { opacity: 0; transform: translateY(16px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; } .reveal { opacity: 1; transform: none; } html { scroll-behavior: auto; } }
@media (max-width: 560px) { .wrap { padding: 0 16px; } .section { padding: 64px 0; } .cta-inner { padding: 26px; } .quiz, .takeaways { padding: 20px; } }

/* ---------- overflow hardening ---------- */
:not(pre) > code { white-space: normal; overflow-wrap: anywhere; }
.pb > *, .roi > *, .mp > *, .prio > *, .compare > *, .split > *, .lab-grid > *, .lab-stage, .demo, .hero-grid > *, .page-hero-grid > *, .callout > div, .steps > li, .tab-panel, .usecase, .mini-card { min-width: 0; }
.lab-grid { grid-template-columns: 250px minmax(0, 1fr); }
@media (max-width: 960px) { .lab-grid { grid-template-columns: minmax(0, 1fr); } }
@media (max-width: 560px) { .lab-nav { margin: 0 -16px; padding-left: 16px; } }
.prose, .lesson { overflow-wrap: break-word; }
.prompt-card, .res, .term, .starter { min-width: 0; }
.prompt-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
@media (max-width: 860px) { .prompt-grid { grid-template-columns: minmax(0, 1fr); } }
@media (max-width: 560px) { .search-field { min-width: 0; } }
.ac-line { align-items: flex-start; }
.atag { align-self: flex-start; height: auto; line-height: 1.6; margin-top: 1px; }
.demo-info { grid-template-columns: 1fr 1fr; }
.demo-info .di-how { grid-column: 1 / -1; }
.di-block .flow-node { flex: 1 0 120px; max-width: none; }
.di-block .flow-node b { font-size: .84rem; }
.di-block .flow-edge { flex-basis: 22px; }
@media (max-width: 620px) { .demo-info { grid-template-columns: 1fr; } }