/* ============================================================
   Aetherius Risk Intelligence — Institutional theme, v2
   Palette: warm ivory ground, ink-navy authority, oxblood +
   brass accents, claret for negatives. Flat hairline surfaces,
   restrained type, tabular figures, section-marks (§), asterisms.
   No SaaS gradients / drop shadows.
   ============================================================ */

:root {
    --color-bg: #FBFAF7;
    --color-bg-alt: #F4F1EA;
    --color-bg-deep: #EDE7D6;
    --color-surface: #FFFFFF;
    --color-ink: #141A24;
    --color-ink-soft: #1E2431;
    --color-text: #20242C;
    --color-text-light: #5C5953;
    --color-text-lighter: #7A756D;
    --color-accent: #6E1423;      /* oxblood */
    --color-accent-soft: #8B1A1A; /* claret */
    --color-brass: #B8893A;
    --color-brass-deep: #9A7230;
    --color-brass-glow: #E7C67A;
    --color-border: #D9D3C7;
    --color-border-strong: #B7AE9C;
    --color-hairline: #E4DFD1;

    --font-heading: 'Playfair Display', 'Times New Roman', Georgia, serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Menlo', 'Consolas', monospace;

    --max-width: 1240px;
    --rule: 1px solid var(--color-border);
    --rule-strong: 1px solid var(--color-border-strong);

    font-variant-numeric: tabular-nums lining-nums;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
    font-family: var(--font-body);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;

    /* Faint paper-fibre texture. Institutional not skeuomorphic:
       a hairline dot grid so screens read like a bound folio. */
    background-image:
        radial-gradient(rgba(20,26,36,0.035) 1px, transparent 1px);
    background-size: 22px 22px;
    background-position: 0 0;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2rem;
}

h1, h2, h3, h4, .logo-word {
    font-family: var(--font-heading);
    color: var(--color-ink);
    font-weight: 700;
    letter-spacing: -0.01em;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color .18s ease, border-color .18s ease, background-color .18s ease;
}

a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--color-brass);
    outline-offset: 3px;
    border-radius: 2px;
}

/* ------------------------------------------------------------
   Eyebrow — the small-caps section label motif carried across
   every section. Institutional signature.
   ------------------------------------------------------------ */
.eyebrow {
    font-family: var(--font-body);
    text-transform: uppercase;
    letter-spacing: 0.22em;
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--color-brass-deep);
    margin-bottom: 1rem;
}
.eyebrow.centered { text-align: center; }

.mono { font-family: var(--font-mono); font-size: 0.92em; letter-spacing: 0; }

/* Asterism — the classical typographic ornament between sections.
   Marks a "conceptual page break" without adding a heavy divider. */
.asterism {
    text-align: center;
    font-size: 1.4rem;
    letter-spacing: 0.5em;
    color: var(--color-brass);
    padding: 3.5rem 0;
    line-height: 1;
    user-select: none;
}

/* ------------------------------------------------------------
   Buttons — near-square, ledger-like. No radius blur, no shadow.
   ------------------------------------------------------------ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.9rem 1.6rem;
    font-family: var(--font-body);
    font-weight: 500;
    font-size: 0.95rem;
    cursor: pointer;
    border-radius: 2px;
    transition: background-color .18s ease, color .18s ease, border-color .18s ease, transform .18s ease;
    text-align: center;
    letter-spacing: 0.01em;
    white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }

.btn-primary {
    background-color: var(--color-ink);
    color: var(--color-bg);
    border: 1px solid var(--color-ink);
}
.btn-primary:hover {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
}

.btn-primary-alt {
    background-color: var(--color-accent);
    color: var(--color-bg);
    border: 1px solid var(--color-accent);
}
.btn-primary-alt:hover {
    background-color: var(--color-ink);
    border-color: var(--color-ink);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-ink);
    border: 0;
    border-bottom: 1px solid var(--color-border-strong);
    border-radius: 0;
    padding-left: 0;
    padding-right: 0;
}
.btn-secondary:hover {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
    transform: none;
}

.btn-tertiary {
    background-color: transparent;
    color: var(--color-ink);
    border: 1px solid var(--color-border-strong);
    padding: 0.85rem 1.4rem;
}
.btn-tertiary:hover {
    border-color: var(--color-ink);
    background-color: var(--color-ink);
    color: var(--color-bg);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-ink);
    border: 1px solid var(--color-border-strong);
}
.btn-outline:hover {
    border-color: var(--color-ink);
    background-color: var(--color-ink);
    color: var(--color-bg);
}

.btn-primary-onink {
    background-color: var(--color-brass);
    color: var(--color-ink);
    border: 1px solid var(--color-brass);
}
.btn-primary-onink:hover {
    background-color: var(--color-bg);
    border-color: var(--color-bg);
}

.btn-ghost-light {
    background-color: transparent;
    color: #E8E3D8;
    border: 1px solid rgba(232,227,216,0.35);
    padding: 0.85rem 1.4rem;
}
.btn-ghost-light:hover {
    border-color: var(--color-brass);
    color: var(--color-brass);
    background-color: transparent;
}

/* ------------------------------------------------------------
   Header
   ------------------------------------------------------------ */
.site-header {
    border-bottom: var(--rule);
    background: rgba(251, 250, 247, 0.94);
    backdrop-filter: saturate(120%) blur(6px);
    -webkit-backdrop-filter: saturate(120%) blur(6px);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 82px;
}

.logo {
    display: inline-flex;
    align-items: baseline;
    gap: 0.55rem;
    color: var(--color-ink);
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}
.logo-mark {
    font-family: var(--font-heading);
    font-size: 1.55rem;
    line-height: 1;
    color: var(--color-brass);
    font-weight: 700;
    padding: 0 0.15rem;
    border-left: 1px solid var(--color-brass);
    border-right: 1px solid var(--color-brass);
    transform: translateY(2px);
}
.logo-word {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    line-height: 1;
}
.logo-sub {
    font-family: var(--font-body);
    font-style: italic;
    font-weight: 400;
    color: var(--color-text-light);
    font-size: 0.82rem;
    letter-spacing: 0.02em;
}

.main-nav {
    display: flex;
    gap: 2.2rem;
    align-items: center;
    font-size: 0.92rem;
    font-weight: 500;
}

.main-nav a:not(.btn) {
    position: relative;
    padding-bottom: 4px;
    color: var(--color-ink-soft);
}
.main-nav a:not(.btn)::after {
    content: "";
    position: absolute;
    left: 0;
    right: 100%;
    bottom: 0;
    height: 1px;
    background: var(--color-accent);
    transition: right .2s ease;
}
.main-nav a:not(.btn):hover { color: var(--color-accent); }
.main-nav a:not(.btn):hover::after { right: 0; }

/* Mobile nav toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    background: transparent;
    border: none;
    cursor: pointer;
}
.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-ink);
    transition: transform .25s ease, opacity .25s ease;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ------------------------------------------------------------
   Hero — "ledger" variant: a hairline column at the far left of
   the viewport suggests the spine of a bound folio.
   ------------------------------------------------------------ */
.hero.ledger {
    padding: 6.5rem 0 7rem;
    border-bottom: var(--rule);
    background-color: var(--color-bg);
    position: relative;
    overflow: hidden;
}
.hero.ledger::before {
    /* far-left brass spine */
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(to bottom, var(--color-brass) 0%, var(--color-brass-deep) 60%, var(--color-brass) 100%);
    opacity: 0.85;
}
.hero.ledger::after {
    /* Vertical publisher line: "Vol. I  ·  MMXXVI" running down the
       left gutter. Rendered as SVG-text via ::after content so it
       stays vector-crisp at any zoom. */
    content: "VOL. I  ·  MMXXVI  ·  AETHERIUS RISK INTELLIGENCE";
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%) rotate(-90deg);
    transform-origin: left center;
    font-family: var(--font-body);
    font-size: 0.62rem;
    letter-spacing: 0.4em;
    color: var(--color-brass-deep);
    white-space: nowrap;
    text-transform: uppercase;
    opacity: 0.55;
    pointer-events: none;
}

.hero-container {
    display: flex;
    gap: 5rem;
    align-items: center;
}

.hero-content { flex: 1.05; }

.hero-content h1 {
    font-size: 3.6rem;
    line-height: 1.08;
    margin-bottom: 1.5rem;
    letter-spacing: -0.015em;
}

.hero-content .lede {
    font-size: 1.18rem;
    color: var(--color-text-light);
    margin-bottom: 2.25rem;
    max-width: 92%;
}

.hero-actions {
    display: flex;
    gap: 1.5rem;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 2.5rem;
}

.hero-open {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    font-size: 0.87rem;
    color: var(--color-text-light);
    padding-top: 1.25rem;
    border-top: 1px dashed var(--color-border);
    max-width: 90%;
}
.hero-open a { color: var(--color-accent); border-bottom: 1px solid transparent; padding-bottom: 1px; }
.hero-open a:hover { border-bottom-color: var(--color-accent); }
.open-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: #2f8b57;
    box-shadow: 0 0 0 3px rgba(47,139,87,0.15);
    flex-shrink: 0;
}

.hero-visual {
    flex: 0.9;
    display: flex;
    justify-content: center;
}

/* ------------------------------------------------------------
   Data card (hero)
   ------------------------------------------------------------ */
.data-card {
    background: var(--color-surface);
    border: var(--rule-strong);
    padding: 1.9rem 2rem 1.75rem;
    width: 100%;
    max-width: 500px;
    position: relative;
}
.data-card::before {
    /* Brass corner tick — a small institutional flourish. */
    content: "";
    position: absolute;
    top: -1px;
    left: -1px;
    width: 12px;
    height: 12px;
    border-top: 2px solid var(--color-brass);
    border-left: 2px solid var(--color-brass);
}
.data-card::after {
    content: "";
    position: absolute;
    bottom: -1px;
    right: -1px;
    width: 12px;
    height: 12px;
    border-bottom: 2px solid var(--color-brass);
    border-right: 2px solid var(--color-brass);
}

.data-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 1rem;
    margin-bottom: 0.3rem;
}
.data-header h3 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 600;
}
.data-subject {
    font-size: 0.8rem;
    color: var(--color-text-light);
    font-style: italic;
    padding-bottom: 0.9rem;
    margin-bottom: 1.1rem;
    border-bottom: 2px solid var(--color-ink);
}
.badge {
    background-color: transparent;
    color: var(--color-brass-deep);
    border: 1px solid var(--color-brass);
    padding: 0.28rem 0.55rem;
    font-size: 0.64rem;
    font-weight: 600;
    border-radius: 2px;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    white-space: nowrap;
}
.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.92rem;
}
.data-table th, .data-table td {
    padding: 0.72rem 0;
    text-align: left;
    border-bottom: 1px solid var(--color-hairline);
}
.data-table th {
    font-weight: 600;
    color: var(--color-text-light);
    text-transform: uppercase;
    font-size: 0.66rem;
    letter-spacing: 0.12em;
}
.data-table th.num, .data-table td.num {
    text-align: right;
    font-family: var(--font-mono);
    font-variant-numeric: tabular-nums;
    font-feature-settings: "tnum";
}
.data-table tr.agg td {
    border-top: 1px solid var(--color-ink);
    border-bottom: 0;
    padding-top: 0.9rem;
    color: var(--color-ink);
    font-weight: 600;
}
.data-footnote {
    margin-top: 1.05rem;
    font-size: 0.74rem;
    color: var(--color-text-light);
    font-style: italic;
}

/* ------------------------------------------------------------
   Trust banner
   ------------------------------------------------------------ */
.trust-banner {
    background-color: var(--color-ink);
    color: #E8E3D8;
    text-align: center;
    padding: 1.3rem 0;
    font-size: 0.95rem;
    letter-spacing: 0.015em;
    position: relative;
}
.trust-banner::before,
.trust-banner::after {
    content: "";
    position: absolute;
    left: 0; right: 0;
    height: 1px;
    background: linear-gradient(to right, transparent 0%, var(--color-brass) 50%, transparent 100%);
    opacity: 0.35;
}
.trust-banner::before { top: 0; }
.trust-banner::after { bottom: 0; }
.trust-banner p {
    max-width: 900px;
    margin: 0 auto;
}

/* ------------------------------------------------------------
   Section lead — the "eyebrow + section-title" pair, uniform
   across §I, §III, §V so the page reads as one printed work.
   ------------------------------------------------------------ */
.section-lead {
    text-align: center;
    margin-bottom: 3.75rem;
}
.section-title {
    font-size: 2.6rem;
    line-height: 1.15;
    letter-spacing: -0.015em;
}
.section-lead .section-title {
    display: inline-block;
}
.section-lead .section-title::after {
    /* short brass rule under section titles — like a printed header rule */
    content: "";
    display: block;
    width: 42px;
    height: 2px;
    background: var(--color-brass);
    margin: 1.1rem auto 0;
}

/* ------------------------------------------------------------
   § I — Methodology
   ------------------------------------------------------------ */
.methodology { padding: 6.5rem 0; }

.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
}

.step-card {
    border-top: 2px solid var(--color-ink);
    padding-top: 1.5rem;
}
.step-number {
    font-family: var(--font-heading);
    font-style: italic;
    font-size: 1.4rem;
    color: var(--color-brass);
    margin-bottom: 0.85rem;
    line-height: 1;
    letter-spacing: 0.02em;
}
.step-card h3 {
    font-size: 1.4rem;
    margin-bottom: 0.75rem;
}
.step-card p {
    color: var(--color-text-light);
    font-size: 0.98rem;
    margin-bottom: 0.85rem;
}
.step-card .step-note {
    margin-top: 0.35rem;
    padding-top: 0.7rem;
    border-top: 1px dashed var(--color-border);
    font-size: 0.78rem;
    color: var(--color-text-lighter);
    font-style: normal;
}
.step-note .mono { color: var(--color-brass-deep); }

/* ------------------------------------------------------------
   § II — Working paper. Central to the whole pitch — the paper
   does 80% of the sales work per the playbook, so it gets its
   own generous, quiet, "letterpress" section.
   ------------------------------------------------------------ */
.paper {
    background-color: var(--color-bg-alt);
    padding: 6.5rem 0;
    border-top: var(--rule);
    border-bottom: var(--rule);
    position: relative;
}
.paper::before {
    /* Left-margin brass rule reminiscent of a printed page's binding. */
    content: "";
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 2px;
    background: var(--color-brass);
    opacity: 0.4;
}

.paper-container {
    display: grid;
    grid-template-columns: 1.7fr 0.9fr;
    gap: 4.5rem;
    align-items: start;
}

.paper-content h2 {
    font-size: 2.1rem;
    line-height: 1.2;
    letter-spacing: -0.01em;
    margin-bottom: 1.5rem;
    max-width: 26ch;
}
.paper-lede {
    font-size: 1.1rem;
    color: var(--color-text);
    line-height: 1.7;
    margin-bottom: 1.75rem;
    max-width: 60ch;
}

/* Classical drop-cap on the paper lede: signals "this is a working
   paper", not "this is a marketing tagline". */
.dropcap {
    float: left;
    font-family: var(--font-heading);
    font-size: 3.6rem;
    line-height: 0.85;
    padding: 0.42rem 0.55rem 0 0;
    color: var(--color-accent);
    font-weight: 700;
}

.pull-quote {
    font-family: var(--font-heading);
    font-style: italic;
    font-size: 1.15rem;
    line-height: 1.55;
    color: var(--color-ink);
    max-width: 62ch;
    padding: 0.75rem 0 0.75rem 1.4rem;
    border-left: 3px solid var(--color-brass);
    margin: 0 0 2rem 0;
    letter-spacing: -0.005em;
}

.paper-actions {
    display: flex;
    gap: 1.4rem;
    align-items: center;
    flex-wrap: wrap;
}

.paper-facts {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
    border-top: 1px solid var(--color-border-strong);
    border-bottom: 1px solid var(--color-border-strong);
    background: var(--color-surface);
    padding: 0 1.6rem;
}
.fact {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 1rem;
    padding: 0.95rem 0;
    border-bottom: 1px solid var(--color-hairline);
}
.fact:last-child { border-bottom: 0; }
.fact-k {
    font-family: var(--font-body);
    text-transform: uppercase;
    letter-spacing: 0.13em;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--color-text-lighter);
}
.fact-v {
    font-family: var(--font-mono);
    font-size: 1.05rem;
    color: var(--color-ink);
    font-weight: 500;
}

/* ------------------------------------------------------------
   § III — Track record
   ------------------------------------------------------------ */
.credibility {
    background-color: var(--color-bg);
    padding: 6.5rem 0;
}

.credibility-intro {
    max-width: 780px;
    margin: 0 auto 3.25rem;
    text-align: center;
    font-size: 1.1rem;
    color: var(--color-text-light);
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: 960px;
    margin: 0 auto 4.5rem;
}

.metric {
    text-align: center;
    padding: 2rem 1rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-top: 3px solid var(--color-brass);
    border-radius: 3px;
    position: relative;
}
.metric-value {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-ink);
    line-height: 1;
    font-feature-settings: "tnum";
}
.metric-unit {
    font-size: 1.05rem;
    font-weight: 500;
    color: var(--color-text-light);
    margin-left: 0.3rem;
}
.metric-label {
    margin-top: 0.9rem;
    font-size: 0.92rem;
    color: var(--color-text-light);
}

.events-table-wrap {
    max-width: 1020px;
    margin: 0 auto;
    overflow-x: auto;
    border: 1px solid var(--color-border-strong);
    background: var(--color-surface);
}
.events-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.94rem;
    min-width: 700px;
}
.events-table th {
    font-family: var(--font-body);
    font-weight: 600;
    color: var(--color-text-lighter);
    text-transform: uppercase;
    font-size: 0.7rem;
    letter-spacing: 0.13em;
    text-align: left;
    padding: 1.1rem 1.25rem;
    background: var(--color-bg-alt);
    border-bottom: 2px solid var(--color-ink);
}
.events-table th.num { text-align: right; }
.events-table td {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--color-hairline);
    vertical-align: top;
}
.events-table td.num {
    text-align: right;
    font-family: var(--font-mono);
    font-variant-numeric: tabular-nums;
}
.events-table tr.agg td {
    background: var(--color-bg-alt);
    border-top: 1px solid var(--color-ink);
}
.cell-sub {
    display: block;
    font-size: 0.8rem;
    color: var(--color-text-lighter);
    font-style: italic;
    margin-top: 2px;
}

.credibility-note {
    max-width: 780px;
    margin: 3.25rem auto 0;
    text-align: center;
    font-size: 0.85rem;
    font-style: italic;
    color: var(--color-text-light);
}

/* ------------------------------------------------------------
   § IV — Deliverable / deck anatomy
   ------------------------------------------------------------ */
.sample-section {
    background-color: var(--color-bg-alt);
    padding: 6.5rem 0;
    border-top: var(--rule);
    border-bottom: var(--rule);
}

.sample-container {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 5rem;
    align-items: center;
}

.sample-content h2 {
    font-size: 2.4rem;
    line-height: 1.15;
    margin-bottom: 1.2rem;
    letter-spacing: -0.01em;
}
.sample-lede {
    font-size: 1.1rem;
    color: var(--color-text-light);
    margin-bottom: 1.75rem;
}

.deck-anatomy {
    list-style: none;
    padding: 0;
    margin: 0;
    border-top: 1px solid var(--color-border-strong);
}
.deck-anatomy li {
    display: flex;
    align-items: baseline;
    gap: 1rem;
    padding: 0.85rem 0;
    border-bottom: 1px solid var(--color-hairline);
    font-size: 0.98rem;
    color: var(--color-text);
}
.anatomy-num {
    font-family: var(--font-heading);
    font-style: italic;
    color: var(--color-brass-deep);
    min-width: 34px;
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.03em;
}

/* Report mockup — the "cover of a bound folio" illustration */
.sample-visual { display: flex; justify-content: center; }
.report-mockup {
    background: var(--color-surface);
    border: 1px solid var(--color-border-strong);
    padding: 2.75rem 2.25rem 2rem;
    border-radius: 2px;
    height: 460px;
    width: 100%;
    max-width: 420px;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}
.report-spine {
    position: absolute;
    top: 0; left: 0; bottom: 0;
    width: 6px;
    background: linear-gradient(to bottom, var(--color-brass) 0%, var(--color-brass-deep) 100%);
    border-radius: 2px 0 0 2px;
}
.report-brand {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-ink);
    letter-spacing: 0.03em;
}
.report-subbrand {
    font-family: var(--font-body);
    font-size: 0.72rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--color-brass-deep);
    margin-top: 0.2rem;
    margin-bottom: 1.75rem;
}
.report-divider {
    height: 2px;
    background: var(--color-ink);
    margin-bottom: 2rem;
}
.report-title {
    font-family: var(--font-heading);
    font-size: 1.9rem;
    line-height: 1.15;
    font-weight: 700;
    color: var(--color-ink);
    letter-spacing: -0.01em;
}
.report-ticker {
    font-family: var(--font-mono);
    font-size: 1.05rem;
    color: var(--color-accent);
    margin-top: 0.3rem;
    letter-spacing: 0.05em;
}
.report-window {
    margin-top: 2.25rem;
    font-size: 0.8rem;
    color: var(--color-text-light);
    font-style: italic;
    padding-top: 0.8rem;
    border-top: 1px solid var(--color-border);
}
.report-facts {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-top: 1.4rem;
    padding-top: 1rem;
    border-top: 1px solid var(--color-border);
}
.report-facts > div {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}
.rf-k {
    font-family: var(--font-body);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    font-size: 0.6rem;
    font-weight: 600;
    color: var(--color-text-lighter);
}
.rf-v {
    font-family: var(--font-mono);
    font-size: 0.95rem;
    color: var(--color-ink);
}
.report-footer {
    margin-top: 1.6rem;
    padding-top: 0.85rem;
    border-top: 1px solid var(--color-border);
    font-family: var(--font-body);
    text-transform: uppercase;
    letter-spacing: 0.18em;
    font-size: 0.62rem;
    color: var(--color-text-lighter);
}

/* ------------------------------------------------------------
   § V — Engagement tiers
   ------------------------------------------------------------ */
.engagement { padding: 6.5rem 0; background-color: var(--color-bg); }

.tiers {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: 1080px;
    margin: 0 auto;
}
.tier {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    padding: 2.25rem 1.75rem 2rem;
    border-radius: 2px;
    position: relative;
    display: flex;
    flex-direction: column;
}
.tier-featured {
    border: 1px solid var(--color-ink);
    border-top: 3px solid var(--color-brass);
    background: var(--color-bg-alt);
    transform: translateY(-6px);
}
.tier-featured::before {
    content: "";
    position: absolute;
    left: -1px;
    right: -1px;
    bottom: -1px;
    height: 3px;
    background: var(--color-brass);
}
.tier-eyebrow {
    font-family: var(--font-body);
    text-transform: uppercase;
    letter-spacing: 0.18em;
    font-size: 0.68rem;
    font-weight: 600;
    color: var(--color-brass-deep);
    margin-bottom: 0.7rem;
}
.tier h3 {
    font-size: 1.4rem;
    margin-bottom: 1.1rem;
    letter-spacing: -0.005em;
}
.tier-price {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-ink);
    line-height: 1;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
    display: flex;
    align-items: baseline;
    gap: 0.15rem;
}
.tier-currency {
    font-size: 1.4rem;
    color: var(--color-brass-deep);
    font-weight: 600;
    align-self: flex-start;
    margin-top: 0.3rem;
}
.tier-range {
    font-size: 1rem;
    color: var(--color-text-light);
    font-weight: 500;
    font-style: italic;
    margin-left: 0.15rem;
}
.tier-per {
    font-size: 0.95rem;
    color: var(--color-text-light);
    font-weight: 500;
    font-style: italic;
    margin-left: 0.15rem;
}
.tier-details {
    list-style: none;
    padding: 0;
    margin: 0;
    flex-grow: 1;
}
.tier-details li {
    padding: 0.55rem 0 0.55rem 1.2rem;
    position: relative;
    font-size: 0.94rem;
    color: var(--color-text-light);
    border-bottom: 1px solid var(--color-hairline);
}
.tier-details li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 1rem;
    width: 8px;
    border-top: 1px solid var(--color-brass);
}
.tier-details li:last-child { border-bottom: 0; }

.tier-note {
    max-width: 640px;
    margin: 2.5rem auto 0;
    text-align: center;
    font-size: 0.85rem;
    font-style: italic;
    color: var(--color-text-light);
}

/* ------------------------------------------------------------
   Evidence strip — the final "audit-me" line, immediately
   above the footer.
   ------------------------------------------------------------ */
.evidence-strip {
    background-color: var(--color-bg-deep);
    border-top: 1px solid var(--color-border-strong);
    border-bottom: 1px solid var(--color-border-strong);
    padding: 2rem 0;
}
.evidence-strip-inner {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.75rem;
    align-items: center;
}
.evidence-cell { display: flex; flex-direction: column; gap: 0.35rem; }
.ec-k {
    font-family: var(--font-body);
    text-transform: uppercase;
    letter-spacing: 0.17em;
    font-size: 0.65rem;
    font-weight: 600;
    color: var(--color-text-lighter);
}
.ec-v {
    font-size: 0.9rem;
    color: var(--color-ink);
    word-break: break-all;
    border-bottom: 1px dashed transparent;
}
a.ec-v:hover { color: var(--color-accent); border-bottom-color: var(--color-accent); }

/* ------------------------------------------------------------
   Footer
   ------------------------------------------------------------ */
.site-footer {
    background-color: var(--color-ink);
    color: #E8E3D8;
    padding: 6rem 0 2rem;
    text-align: center;
    position: relative;
}
.site-footer::before {
    content: "⁂";
    position: absolute;
    top: 2.4rem; left: 0; right: 0;
    text-align: center;
    color: var(--color-brass);
    font-size: 1.2rem;
    letter-spacing: 0.5em;
    opacity: 0.6;
}
.footer-eyebrow { color: var(--color-brass); }
.site-footer h2 {
    color: #FBFAF7;
    font-size: 2.6rem;
    line-height: 1.15;
    margin-bottom: 1rem;
    letter-spacing: -0.015em;
}
.footer-lede {
    color: #C9C3B6;
    font-size: 1.12rem;
    margin-bottom: 2.5rem;
    max-width: 620px;
    margin-left: auto;
    margin-right: auto;
}
.footer-actions {
    display: flex;
    gap: 1.25rem;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 3rem;
}

.footer-contact {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    max-width: 780px;
    margin: 0 auto;
    padding: 2rem 0;
    border-top: 1px solid #2E3742;
    border-bottom: 1px solid #2E3742;
    text-align: left;
}
.footer-contact > div {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}
.fc-k {
    font-family: var(--font-body);
    text-transform: uppercase;
    letter-spacing: 0.17em;
    font-size: 0.62rem;
    font-weight: 600;
    color: var(--color-brass);
}
.fc-v {
    color: #E8E3D8;
    font-size: 0.9rem;
    word-break: break-word;
    border-bottom: 1px dashed transparent;
    padding-bottom: 1px;
}
a.fc-v:hover { color: var(--color-brass); border-bottom-color: var(--color-brass); }

.footer-disclaimer {
    max-width: 780px;
    margin: 3rem auto 0;
    padding-top: 2rem;
    border-top: 1px solid #2E3742;
}
.footer-disclaimer p {
    font-size: 0.8rem;
    line-height: 1.7;
    color: #9AA0A8;
}
.footer-bottom {
    margin-top: 2rem;
    padding-top: 1.75rem;
    font-size: 0.82rem;
    color: #7C828A;
}

/* ------------------------------------------------------------
   Responsive
   ------------------------------------------------------------ */
@media (max-width: 1000px) {
    .paper-container { grid-template-columns: 1fr; gap: 2.5rem; }
    .sample-container { grid-template-columns: 1fr; gap: 3rem; }
    .hero-container { gap: 3rem; }
    .hero-content h1 { font-size: 3rem; }
}

@media (max-width: 900px) {
    .hero-content h1 { font-size: 2.75rem; }
    .section-title, .sample-content h2, .site-footer h2, .paper-content h2 { font-size: 2.05rem; }
    .paper-content h2 { max-width: none; }
    .hero.ledger::after { display: none; }
    .evidence-strip-inner { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
}

@media (max-width: 768px) {
    .nav-toggle { display: flex; }
    .main-nav {
        position: absolute;
        top: 82px;
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        background: var(--color-bg);
        border-bottom: var(--rule);
        padding: 0.5rem 2rem 1.25rem;
        max-height: 0;
        overflow: hidden;
        transition: max-height .28s ease, padding .28s ease;
    }
    .main-nav.open { max-height: 400px; }
    .main-nav a { padding: 0.85rem 0; border-bottom: 1px solid var(--color-border); }
    .main-nav a.btn-outline {
        margin-top: 0.75rem;
        text-align: center;
        border: 1px solid var(--color-border-strong);
    }
    .logo-sub { display: none; }

    .hero.ledger { padding: 4rem 0 4.5rem; }
    .hero-container { flex-direction: column; text-align: left; gap: 3rem; }
    .hero-content .lede { max-width: 100%; }
    .hero-actions { justify-content: flex-start; }
    .hero-open { max-width: 100%; }

    .steps-grid,
    .metrics-grid,
    .tiers,
    .footer-contact {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    .tier-featured { transform: translateY(0); }

    .events-table th, .events-table td { padding: 0.75rem 0.75rem; font-size: 0.85rem; }

    .paper { padding: 4.5rem 0; }
    .methodology, .credibility, .sample-section, .engagement { padding: 4.5rem 0; }
    .report-mockup { height: auto; padding: 2rem; }

    .footer-actions { flex-direction: column; gap: 1rem; }
    .footer-actions .btn { width: 100%; }
}

@media (max-width: 480px) {
    .hero-content h1 { font-size: 2.2rem; }
    .section-title, .sample-content h2, .site-footer h2, .paper-content h2 { font-size: 1.75rem; }
    .metric-value { font-size: 2.4rem; }
    .tier-price { font-size: 2rem; }
}

/* Motion-reduction respects OS preference. */
@media (prefers-reduced-motion: reduce) {
    * {
        transition-duration: .01ms !important;
        animation-duration: .01ms !important;
        scroll-behavior: auto !important;
    }
    .btn:hover { transform: none; }
}

/* Print — keeps evidence pages legible if a buyer prints this. */
@media print {
    body { background: #fff; }
    .site-header, .nav-toggle, .hero-actions, .paper-actions, .footer-actions { display: none; }
    .hero.ledger::before, .hero.ledger::after, .paper::before { display: none; }
    a { color: inherit; text-decoration: underline; }
    section { page-break-inside: avoid; padding: 2rem 0; }
}