/* ──────────────────────────────────────────────────────────────────────────
   AI GTM Insiders - shared brand system.
   Lifted verbatim from the signup lander (index.html) so every page on the
   site shares one source of truth: same tokens, type, coral, chrome.
   Dark editorial / terminal aesthetic. Import on every multi-page file:
     <link rel="stylesheet" href="/assets/brand.css">
   ────────────────────────────────────────────────────────────────────────── */

:root {
    --bg:           #0a0a0a;
    --bg-panel:     #141414;
    --bg-panel-2:   #1a1a1a;
    --text:         #fafafa;
    --text-muted:   #a3a3a3;
    --text-subtle:  #737373;
    --border:       rgba(250, 250, 250, 0.08);
    --border-soft:  rgba(250, 250, 250, 0.16);
    --neutral-700:  #404040;
    --neutral-600:  #525252;
    --accent-coral: #fe7b57;
    --accent-mint:  #b9e8a8;
    --font-sans:    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-display: "Inter Tight", "Inter", -apple-system, sans-serif;
    --font-mono:    "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    min-height: 100vh;
}
body { display: flex; flex-direction: column; }

a { color: inherit; }

/* ── Top nav ─────────────────────────────────────────────────────────────── */
.nav {
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(10, 10, 10, 0.82);
    backdrop-filter: saturate(140%) blur(10px);
}
.nav-inner {
    max-width: 1040px;
    margin: 0 auto;
    padding: 18px 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}
.nav-wordmark {
    font-family: var(--font-mono);
    font-size: 14px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
    white-space: nowrap;
}
.nav-wordmark .dot { color: var(--accent-coral); margin: 0 2px; }
.nav-right { display: flex; align-items: center; gap: 28px; }
.nav-links { display: flex; gap: 24px; }
.nav-links a {
    font-family: var(--font-mono);
    font-size: 13px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-subtle);
    text-decoration: none;
    transition: color 0.15s ease;
}
.nav-links a:hover, .nav-links a.is-active { color: var(--text); }
.nav-cta {
    background: var(--accent-coral);
    color: #050505;
    border-radius: 8px;
    padding: 11px 18px;
    font: 700 13px/1 var(--font-sans);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    text-decoration: none;
    white-space: nowrap;
    transition: opacity 0.15s ease, transform 0.1s ease;
}
.nav-cta:hover { opacity: 0.92; }
.nav-cta:active { transform: scale(0.98); }

/* ── Page shell ──────────────────────────────────────────────────────────── */
.page {
    flex: 1;
    width: 100%;
    max-width: 1040px;
    margin: 0 auto;
    padding: 72px 40px 96px;
}
.page--narrow { max-width: 760px; }

/* ── Eyebrow (coral tick + tracked caps) ─────────────────────────────────── */
.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-sans);
    font-weight: 500;
    font-size: 13px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-subtle);
    margin-bottom: 22px;
}
.eyebrow::before { content: ""; width: 32px; height: 2px; background: var(--accent-coral); }

/* ── Display headline ────────────────────────────────────────────────────── */
.h-display {
    font-family: var(--font-display);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.04;
    color: var(--text);
}
.h-display .accent { color: var(--accent-coral); }

.dek {
    font: 400 19px/1.6 var(--font-sans);
    color: var(--text-muted);
    max-width: 62ch;
}

/* ── Dashed rule ─────────────────────────────────────────────────────────── */
.rule {
    color: var(--neutral-700);
    font-family: var(--font-mono);
    font-size: 16px;
    overflow: hidden;
    white-space: nowrap;
    user-select: none;
}

/* ── Guide card grid ─────────────────────────────────────────────────────── */
.guide-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
    border-radius: 14px;
    overflow: hidden;
}
.guide-card {
    background: var(--bg);
    padding: 30px 30px 28px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    min-height: 220px;
    text-decoration: none;
    color: inherit;
    transition: background 0.15s ease;
}
.guide-card.is-live:hover { background: var(--bg-panel); }
.guide-card.is-featured { grid-column: 1 / -1; flex-direction: row; gap: 36px; align-items: stretch; }
.guide-card.is-soon { cursor: default; }
.guide-card.is-soon .gc-title { color: var(--text-muted); }

.gc-index {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--neutral-600);
    letter-spacing: 0.04em;
}
.gc-top { display: flex; align-items: center; justify-content: space-between; }
.gc-tag {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent-coral);
}
.gc-tag.is-soon { color: var(--text-subtle); }
.gc-title {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 26px;
    line-height: 1.12;
    letter-spacing: -0.02em;
    color: var(--text);
}
.guide-card.is-featured .gc-title { font-size: 40px; max-width: 16ch; }
.gc-desc { font: 400 15px/1.6 var(--font-sans); color: var(--text-muted); max-width: 46ch; }
.guide-card.is-featured .gc-desc { font-size: 17px; }
.gc-foot {
    margin-top: auto;
    display: flex;
    align-items: center;
    gap: 16px;
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.04em;
    color: var(--text-subtle);
}
.gc-read { color: var(--text); }
.gc-read .arrow { color: var(--accent-coral); margin-left: 8px; }
.gc-col { display: flex; flex-direction: column; gap: 14px; flex: 1; }
.gc-side {
    width: 38%;
    border-left: 1px solid var(--border);
    padding-left: 36px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 10px;
}
.gc-side .k { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-subtle); }
.gc-side .v { font: 500 15px/1.5 var(--font-sans); color: var(--text-muted); }

/* ── Inline subscribe band ───────────────────────────────────────────────── */
.sub-band {
    margin-top: 64px;
    border: 1px solid var(--border-soft);
    border-radius: 14px;
    background: var(--bg-panel);
    padding: 40px;
}
.sub-band .label { font-family: var(--font-mono); font-size: 13px; color: var(--text-subtle); margin-bottom: 12px; }
.sub-band .label .prompt { color: var(--neutral-600); margin-right: 8px; }
.sub-band h3 { font-family: var(--font-display); font-weight: 700; font-size: 28px; letter-spacing: -0.02em; margin-bottom: 10px; }
.sub-band p { font: 400 15px/1.55 var(--font-sans); color: var(--text-muted); max-width: 52ch; margin-bottom: 22px; }
.sub-form { display: flex; gap: 12px; flex-wrap: wrap; }
.sub-input {
    flex: 1;
    min-width: 220px;
    background: var(--bg);
    border: 1px solid var(--border-soft);
    border-radius: 8px;
    padding: 15px 18px;
    font: 400 16px/1 var(--font-sans);
    color: var(--text);
    outline: none;
    transition: border-color 0.15s ease;
}
.sub-input::placeholder { color: var(--text-subtle); }
.sub-input:focus { border-color: var(--accent-coral); }
.sub-submit {
    background: var(--accent-coral);
    color: #050505;
    border: none;
    border-radius: 8px;
    padding: 15px 26px;
    font: 700 15px/1 var(--font-sans);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    cursor: pointer;
    white-space: nowrap;
    transition: opacity 0.15s ease, transform 0.1s ease;
}
.sub-submit:hover { opacity: 0.92; }
.sub-submit:active { transform: scale(0.98); }
.sub-note { margin-top: 14px; font: 400 13px/1.5 var(--font-mono); color: var(--text-subtle); }
.sub-note::before { content: "// "; color: var(--neutral-600); }
.sub-band.is-done .sub-form, .sub-band.is-done .sub-note { display: none; }
.sub-done { display: none; font: 400 16px/1.6 var(--font-mono); color: var(--text-muted); }
.sub-band.is-done .sub-done { display: block; }
.sub-done strong { color: var(--accent-mint); font-weight: 500; }

/* ── Long-form article prose ─────────────────────────────────────────────── */
.prose { font: 400 19px/1.72 var(--font-sans); color: var(--text-muted); }
.prose > * + * { margin-top: 28px; }
.prose h2 {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 30px;
    line-height: 1.18;
    letter-spacing: -0.02em;
    color: var(--text);
    margin-top: 56px;
}
.prose strong { color: var(--text); font-weight: 600; }
.prose em { color: var(--text); font-style: italic; }
.prose hr { border: 0; border-top: 1px solid var(--border); margin: 48px 0; }
.prose .lede { font-size: 21px; color: var(--text); }

/* ── In-article diagrams ─────────────────────────────────────────────────── */
figure.dgm { margin: 48px 0; padding: 0; }
.dgm figcaption {
    margin-top: 14px; font-family: var(--font-mono); font-size: 13px; line-height: 1.5;
    color: var(--text-subtle);
}
.dgm figcaption::before { content: "// "; color: var(--neutral-600); }

/* Equation band - Fit × Timing → Priority */
.dgm-equation {
    display: flex; align-items: center; justify-content: center; gap: 28px; flex-wrap: wrap;
    border: 1px solid var(--border-soft); border-radius: 14px; background: var(--bg-panel);
    padding: 40px 28px;
}
.eq-term { display: flex; flex-direction: column; align-items: center; gap: 8px; }
.eq-k { font-family: var(--font-display); font-weight: 700; font-size: 38px; letter-spacing: -0.02em; color: var(--text); }
.eq-out .eq-k { color: var(--accent-coral); }
.eq-sub { font-family: var(--font-mono); font-size: 12px; color: var(--text-subtle); text-transform: uppercase; letter-spacing: 0.08em; }
.eq-op { font-family: var(--font-mono); font-size: 32px; color: var(--text-subtle); }

/* Priority matrix: Fit x Timing grid */
.dgm-matrix { border: 1px solid var(--border-soft); border-radius: 14px; background: var(--bg-panel); padding: 34px 34px 30px; }
.mx-legend { display: grid; grid-template-columns: 64px 1fr; gap: 12px; margin-bottom: 18px; }
.mx-legend span { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent-coral); }
.mx-l-y { text-align: center; }
.mx-col-labels, .mx-row { display: grid; grid-template-columns: 64px repeat(3, 1fr); gap: 12px; align-items: center; }
.mx-col-labels { margin-bottom: 12px; }
.mx-col-labels span { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.04em; text-transform: uppercase; color: var(--text-subtle); text-align: center; }
.mx-row { margin-bottom: 12px; }
.mx-row:last-of-type { margin-bottom: 0; }
.mx-row-label { font-family: var(--font-mono); font-size: 15px; color: var(--text-muted); text-align: center; }
.mx-cell { aspect-ratio: 2.6 / 1; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-family: var(--font-mono); font-size: 16px; }
.mx-p1 { background: var(--accent-coral); color: #0a0a0a; font-weight: 600; }
.mx-p2 { background: #33241d; color: #f0b48f; }
.mx-p3 { background: #141414; color: var(--text-subtle); border: 1px solid var(--border); }
.dgm-matrix figcaption { margin-top: 18px; }

/* Lay vs. rent comparison */
.dgm-compare { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: 14px; overflow: hidden; }
.cmp-col { background: var(--bg); padding: 30px; }
.cmp-h { font-family: var(--font-display); font-weight: 700; font-size: 21px; margin-bottom: 18px; letter-spacing: -0.01em; }
.cmp-lay .cmp-h { color: var(--accent-coral); }
.cmp-rent .cmp-h { color: var(--text-muted); }
.cmp-list { list-style: none; display: flex; flex-direction: column; gap: 13px; padding: 0; margin: 0; }
.cmp-list li { font-family: var(--font-sans); font-size: 15px; line-height: 1.5; color: var(--text-muted); padding-left: 24px; position: relative; }
.cmp-lay li::before { content: "+"; position: absolute; left: 0; top: 0; color: var(--accent-coral); font-family: var(--font-mono); }
.cmp-rent li::before { content: "×"; position: absolute; left: 0; top: 0; color: var(--text-subtle); font-family: var(--font-mono); }

/* Four states progression */
.dgm-states { display: flex; flex-direction: column; gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: 14px; overflow: hidden; }
.st-row { background: var(--bg); padding: 22px 28px; display: grid; grid-template-columns: 130px 1fr; gap: 22px; align-items: start; }
.st-phase { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-subtle); padding-top: 5px; }
.st-body { display: flex; flex-direction: column; gap: 7px; }
.st-move { display: flex; align-items: center; gap: 18px; font-family: var(--font-display); font-weight: 700; font-size: 23px; letter-spacing: -0.01em; flex-wrap: wrap; }
.st-from { color: var(--text-subtle); }
.st-arrow { color: var(--accent-coral); font-family: var(--font-mono); }
.st-to { color: var(--text); }
.st-note { font-family: var(--font-sans); font-size: 14px; line-height: 1.45; color: var(--text-subtle); }

/* Stat contrast (63 vs 16,000; cost collapse) */
.dgm-stat { border: 1px solid var(--border-soft); border-radius: 14px; background: var(--bg-panel); padding: 44px 38px 40px; }
.stat-row { display: flex; align-items: flex-start; justify-content: center; gap: 34px; flex-wrap: wrap; }
.stat-term { text-align: center; }
.stat-n { font-family: var(--font-display); font-weight: 700; letter-spacing: -0.03em; line-height: 1; font-size: 72px; }
.stat-from .stat-n { color: var(--text-subtle); }
.stat-to .stat-n { color: var(--accent-coral); }
.stat-k { display: block; margin-top: 16px; font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-subtle); }
.stat-arrow { font-family: var(--font-mono); font-size: 30px; color: var(--text-subtle); padding-top: 21px; }
.dgm-stat figcaption { margin-top: 30px; text-align: center; }
.dgm-stat figcaption::before { content: ""; }

/* The stack vs. the question */
.dgm-stack { border: 1px solid var(--border); border-radius: 14px; overflow: hidden; }
.stk-row { display: grid; grid-template-columns: 1.1fr 1.4fr auto; gap: 20px; align-items: center; padding: 20px 26px; background: var(--bg); border-bottom: 1px solid var(--border); }
.stk-row:last-child { border-bottom: none; }
.stk-tool { font-family: var(--font-display); font-weight: 700; font-size: 19px; color: var(--text); }
.stk-sells { font-family: var(--font-sans); font-size: 15px; color: var(--text-muted); }
.stk-gap { font-family: var(--font-mono); font-size: 13px; color: var(--text-subtle); white-space: nowrap; }
.stk-gap::before { content: "x "; color: var(--text-subtle); }
.stk-q { padding: 24px 26px; background: var(--bg-panel); display: flex; align-items: center; gap: 14px; border-bottom: 1px solid var(--border-soft); }
.stk-q .q-tick { color: var(--accent-coral); font-family: var(--font-mono); font-size: 20px; }
.stk-q .q-text { font-family: var(--font-display); font-weight: 700; font-size: 21px; color: var(--accent-coral); letter-spacing: -0.01em; }

/* Capability flow: unstructured -> plain-language question -> structured */
.dgm-flow { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; gap: 14px; align-items: stretch; }
.fl-box { border: 1px solid var(--border-soft); border-radius: 12px; background: var(--bg-panel); padding: 22px 20px; display: flex; flex-direction: column; gap: 9px; }
.fl-box.fl-q { border-color: var(--accent-coral); }
.fl-k { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-subtle); margin-bottom: 4px; }
.fl-q .fl-k { color: var(--accent-coral); }
.fl-item { font-family: var(--font-sans); font-size: 14px; color: var(--text-muted); line-height: 1.4; }
.fl-q .fl-item { color: var(--text); font-style: italic; }
.fl-out { font-family: var(--font-mono); font-size: 13px; color: var(--accent-mint); line-height: 1.5; }
.fl-arrow { display: flex; align-items: center; justify-content: center; font-family: var(--font-mono); font-size: 22px; color: var(--text-subtle); }

/* Compounding loop */
.dgm-loop { display: flex; align-items: center; justify-content: center; gap: 12px; flex-wrap: wrap; border: 1px solid var(--border-soft); border-radius: 14px; background: var(--bg-panel); padding: 44px 28px 34px; }
.lp-node { font-family: var(--font-mono); font-size: 14px; color: var(--text); padding: 12px 16px; border: 1px solid var(--border-soft); border-radius: 8px; background: var(--bg); }
.lp-arrow { font-family: var(--font-mono); font-size: 18px; color: var(--accent-coral); }
.lp-loop { width: 100%; text-align: center; margin-top: 14px; font-family: var(--font-mono); font-size: 13px; letter-spacing: 0.04em; color: var(--accent-coral); }

@media (max-width: 640px) {
    .dgm-compare { grid-template-columns: 1fr; }
    .st-row { grid-template-columns: 1fr; gap: 8px; }
    .mx-cell { font-size: 14px; }
    .eq-k { font-size: 30px; }
    .dgm-flow { grid-template-columns: 1fr; }
    .fl-arrow { transform: rotate(90deg); }
    .stk-row { grid-template-columns: 1fr; gap: 8px; }
    .stat-to .stat-n { font-size: 60px; }
    .stat-from .stat-n { font-size: 46px; }
}

/* ── Footer ──────────────────────────────────────────────────────────────── */
.foot {
    border-top: 1px solid var(--border);
    margin-top: auto;
}
.foot-inner {
    max-width: 1040px;
    margin: 0 auto;
    padding: 36px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font: 500 13px/1 var(--font-sans);
    letter-spacing: 0.12em;
    color: var(--text-subtle);
    text-transform: uppercase;
}
.foot-inner strong { color: var(--text); font-weight: 600; }
.foot-right { display: flex; gap: 24px; }
.foot-right a { color: var(--text-subtle); text-decoration: none; transition: color 0.15s ease; }
.foot-right a:hover { color: var(--accent-coral); }

/* ── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 860px) {
    .nav-inner { padding: 16px 24px; }
    .nav-links { display: none; }
    .page { padding: 48px 24px 72px; }
    .guide-grid { grid-template-columns: 1fr; }
    .guide-card.is-featured { flex-direction: column; gap: 22px; }
    .guide-card.is-featured .gc-title { font-size: 30px; }
    .gc-side { width: auto; border-left: 0; border-top: 1px solid var(--border); padding-left: 0; padding-top: 22px; flex-direction: row; gap: 36px; }
    .sub-band { padding: 28px; }
    .prose { font-size: 17px; }
    .prose h2 { font-size: 25px; }
    .foot-inner { flex-direction: column; align-items: flex-start; gap: 14px; padding: 28px 24px; }
}