/* ===== Base / Reset ===== */
body {
    font-family: 'Raleway', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f8;
    color: #333;
}

/* ===== Header ===== */
header {
    background-color: #2b2b2b;
    color: #f4f4f8;
    padding: 20px 10px 10px;
    text-align: center;
}

header h1 {
    font-size: 2.5rem;
    margin: 0;
}

header > p {
    font-size: 1.2rem;
    margin: 5px 0 0;
    font-style: italic;
}

/* ===== Navigation ===== */
nav {
    margin-top: 15px;
    display: flex;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
}

nav a {
    color: #f4f4f8;
    text-decoration: none;
    padding: 8px 18px;
    font-size: 0.95rem;
    border-radius: 4px;
    transition: background-color 0.2s;
}

nav a:hover,
nav a.active {
    background-color: #0f4c81;
}

/* ===== Main content areas ===== */
.hero {
    max-width: 800px;
    margin: 30px auto;
    padding: 20px;
    text-align: center;
}

.hero p {
    font-size: 1.1rem;
    line-height: 1.6;
}

.content {
    max-width: 800px;
    margin: 30px auto;
    padding: 20px;
}

.content p {
    font-size: 1.15rem;
    line-height: 1.7;
}

.content h2 {
    font-size: 1.8rem;
    color: #09090A;
    margin-top: 50px;
    margin-bottom: 10px;
}

.content h3 {
    font-size: 1.3rem;
    color: #0f4c81;
    margin-top: 35px;
    margin-bottom: 8px;
}

.content ul {
    font-size: 1.1rem;
    line-height: 1.8;
    padding-left: 25px;
}

/* ===== Engine intro + diagram (kept tight together) ===== */
.engine-intro {
    margin-bottom: 0;
    padding-bottom: 0;
}

.engine-diagram {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px 10px;
}

.engine-diagram svg {
    display: block;
    width: 100%;
    height: auto;
}

/* ===== Page hero (for sub-pages) ===== */
.page-hero {
    max-width: 800px;
    margin: 40px auto 20px;
    padding: 20px;
    text-align: center;
}

.page-hero h2 {
    font-size: 2rem;
    color: #09090A;
    margin: 0 0 10px;
}

.page-hero p {
    font-size: 1.2rem;
    line-height: 1.6;
    color: #555;
}

/* ===== Section cards (for linking to sub-sections) ===== */
.section-cards {
    position: relative;
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    justify-content: center;
    margin: 40px auto;
    max-width: 900px;
    padding: 0 20px;
}

.section-card {
    flex: 1 1 150px;
    max-width: 190px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 54px;
    background: #fff;
    border: 1px solid #dbdde0;
    border-radius: 8px;
    padding: 14px 16px;
    text-align: center;
    text-decoration: none;
    color: #333;
    cursor: pointer;
    transition: border-color 0.2s, box-shadow 0.2s,
                transform 0.45s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.35s ease;
}

.section-card:hover {
    border-color: #0f4c81;
    box-shadow: 0 2px 12px rgba(15, 76, 129, 0.12);
}

/* ===== "For Everyone" merge interaction ===== */
/* Default (touch / no-hover devices): the role buttons stay put and a
   static "For Everyone" button sits below the grid, so the punchline
   still lands without a hover to trigger it. */
.section-merge {
    flex: 1 1 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 22px 30px;
    margin-top: 4px;
    text-align: center;
    text-decoration: none;
    background: #0f4c81;
    border-radius: 8px;
    box-shadow: 0 6px 22px rgba(15, 76, 129, 0.18);
}

/* Hover-capable devices: hide it as an overlay and run the merge.
   Hovering anywhere in the row fades the buttons toward center while
   this single button expands in over them. */
@media (hover: hover) and (pointer: fine) {
    .section-merge {
        position: absolute;
        top: 0;
        bottom: 0;
        left: 20px;
        right: 20px;
        margin-top: 0;
        opacity: 0;
        transform: scaleX(0.5);
        pointer-events: none;
        transition: opacity 0.35s ease 0.08s,
                    transform 0.45s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .section-cards:hover .section-card {
        opacity: 0;
        transform: scale(0.85);
        border-color: #dbdde0;
        box-shadow: none;
        pointer-events: none;
    }

    .section-cards:hover .section-merge {
        opacity: 1;
        transform: scaleX(1);
        pointer-events: auto;
    }
}

.section-merge h3 {
    color: #EAD553;
    font-size: 1.6rem;
    margin: 0 0 4px;
}

.merge-sub {
    margin: 0;
    font-size: 0.78rem;
    font-weight: 400;
    letter-spacing: 0.04em;
    color: #f4f4f8;
    opacity: 0.75;
}

.section-card h3 {
    font-size: 1.02rem;
    color: #0f4c81;
    margin: 0;
    line-height: 1.25;
}

/* ===== CTA ===== */
.cta {
    margin: 30px 0;
}

.cta a {
    display: inline-block;
    background-color: #0f4c81;
    color: #f4f4f8;
    text-decoration: none;
    padding: 10px 20px;
    font-size: 1rem;
    border-radius: 5px;
}

.cta a:hover {
    background-color: #0a3559;
}

/* ===== Dividers ===== */
hr {
    border: none;
    border-top: 1px solid #dbdde0;
    margin: 40px auto;
    max-width: 800px;
}

/* ===== Sub-section divider ===== */
.section-divider {
    width: 60px;
    height: 3px;
    background-color: #EAD553;
    border: none;
    margin: 50px auto 40px;
    border-radius: 2px;
}

/* ===== Pricing tiers ===== */
.tiers {
    max-width: 1000px;
    margin: 40px auto;
    padding: 0 20px;
    text-align: center;
}

.tiers-title {
    font-size: 2rem;
    color: #09090A;
    margin: 0 0 8px;
}

.tiers-sub {
    font-size: 1.1rem;
    color: #555;
    line-height: 1.6;
    max-width: 620px;
    margin: 0 auto 35px;
}

.tier-grid {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
    justify-content: center;
    align-items: stretch;
}

.tier {
    flex: 1 1 260px;
    max-width: 320px;
    display: flex;
    flex-direction: column;
    background: #fff;
    border: 1px solid #dbdde0;
    border-radius: 10px;
    padding: 32px 26px 28px;
    text-align: left;
    transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}

.tier:hover {
    border-color: #0f4c81;
    box-shadow: 0 4px 18px rgba(15, 76, 129, 0.14);
    transform: translateY(-3px);
}

/* Blackboard-bold glyph (Q, R, C) in the Numerical Building style */
.tier-glyph {
    font-family: 'Cambria Math', 'Latin Modern Math', Georgia, 'Times New Roman', serif;
    font-size: 3.4rem;
    line-height: 1;
    color: #0f4c81;
    display: block;
    margin-bottom: 14px;
    /* subtle yellow underglow to echo the brand accent */
    text-shadow: 2px 2px 0 rgba(234, 213, 83, 0.55);
}

.tier h3 {
    font-size: 1.35rem;
    color: #09090A;
    margin: 0 0 12px;
    font-weight: 700;
}

.tier-blurb {
    font-size: 1rem;
    line-height: 1.6;
    color: #444;
    margin: 0 0 22px;
    flex-grow: 1;
}

.tier-price {
    font-size: 1.6rem;
    font-weight: 700;
    color: #0f4c81;
    margin: 0;
}

.tier-price span {
    font-size: 0.85rem;
    font-weight: 400;
    color: #777;
    white-space: nowrap;
}

.tier-price-contact a {
    display: inline-block;
    background-color: #0f4c81;
    color: #f4f4f8;
    text-decoration: none;
    padding: 10px 22px;
    font-size: 1rem;
    border-radius: 5px;
    transition: background-color 0.2s;
}

.tier-price-contact a:hover {
    background-color: #0a3559;
}

/* Featured (middle) tier */
.tier-featured {
    border-color: #0f4c81;
    border-width: 2px;
    position: relative;
}

.tier-featured .tier-glyph {
    color: #0f4c81;
    text-shadow: 2px 2px 0 rgba(234, 213, 83, 0.85);
}

/* ===== Narrative scenes (questions / live data / answers) ===== */
.scene {
    max-width: 920px;
    margin: 8px auto;
    padding: 18px 20px;
}

.scene-caption {
    text-align: center;
    font-size: 1.15rem;
    line-height: 1.5;
    color: #09090A;
    max-width: 640px;
    margin: 0 auto 24px;
}

.scene-stage {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 28px;
    flex-wrap: wrap;
}

.engine-core {
    flex: 0 0 auto;
    width: 170px;
    text-align: center;
}

.engine-core img {
    width: 150px;
    height: 150px;
    margin: 0 auto;
    display: block;
}

.engine-label {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    color: #f4f4f8;
    background: #0f4c81;
    border-radius: 5px;
    padding: 4px 12px;
    margin-top: -6px;
}

.bubbles {
    flex: 1 1 380px;
    max-width: 470px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.bubble {
    background: #fff;
    border: 1px solid #c9ccd2;
    border-left: 3px solid #EAD553;
    border-radius: 0;
    padding: 16px 18px;
    box-shadow: none;
}

.bubble.answer {
    border-left-color: #0f4c81;
}

.bubble-text {
    font-size: 1.05rem;
    line-height: 1.5;
    margin: 0;
    color: #333;
}

.bubble-text strong {
    color: #0f4c81;
}

.uchart {
    width: 220px;
    max-width: 100%;
    height: auto;
    display: block;
    margin: 12px 0 2px;
}

.uchart-cap {
    font-size: 0.8rem;
    color: #777;
    margin: 0;
}

.bubble-actions {
    margin-top: 14px;
    display: flex;
    gap: 8px;
}

.chip {
    font-size: 0.85rem;
    font-weight: 600;
    padding: 5px 16px;
    border-radius: 2px;
    background: #0f4c81;
    color: #f4f4f8;
    cursor: pointer;
}

.chip.ghost {
    background: transparent;
    color: #0f4c81;
    border: 1px solid #0f4c81;
}

.bubble-note {
    font-size: 0.92rem;
    font-style: italic;
    color: #666;
    margin: 12px 0 0;
}

.bubble-note + .bubble-cta {
    margin-top: 6px;
}

.bubble-cta {
    display: inline-block;
    margin-top: 14px;
    font-size: 0.9rem;
    font-weight: 600;
    color: #0f4c81;
    cursor: pointer;
}

.bubble-cta:hover {
    text-decoration: underline;
}

.stat-row {
    display: flex;
    gap: 22px;
    flex-wrap: wrap;
    margin: 14px 0 2px;
}

.stat .v {
    display: block;
    font-size: 1.15rem;
    font-weight: 700;
    color: #0f4c81;
}

.stat .k {
    display: block;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: #777;
}

/* Live-data scene */
.live-svg {
    display: block;
    width: 100%;
    max-width: 700px;
    height: auto;
    margin: 0 auto;
}

/* ===== Walkthrough stepper ===== */
.intro-lead {
    max-width: 720px;
    margin: 8px auto 22px;
    padding: 0 20px;
    text-align: center;
    font-size: 1.15rem;
    line-height: 1.6;
    color: #333;
}

.walkthrough {
    max-width: 920px;
    margin: 0 auto 8px;
    padding: 0 20px;
}

.steps-nav {
    display: flex;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
}

.step-tab {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: inherit;
    font-size: 0.98rem;
    font-weight: 600;
    color: #0f4c81;
    background: #fff;
    border: 1px solid #c9ccd2;
    border-radius: 2px;
    padding: 9px 16px;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.step-tab:hover {
    border-color: #0f4c81;
}

.step-tab .step-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #eef1f5;
    color: #0f4c81;
    font-size: 0.78rem;
    font-weight: 700;
}

.step-tab.active {
    background: #0f4c81;
    color: #f4f4f8;
    border-color: #0f4c81;
}

.step-tab.active .step-num {
    background: #EAD553;
    color: #09090A;
}

.step-panels {
    border: 1px solid #e3e5ea;
    border-radius: 2px;
    margin-top: 14px;
    padding: 24px 20px 12px;
}

.step-panel {
    display: none;
}

.step-panel.active {
    display: block;
}

.step-caption {
    text-align: center;
    font-size: 1.12rem;
    line-height: 1.5;
    color: #09090A;
    max-width: 660px;
    margin: 0 auto 18px;
}

.step-visual {
    text-align: center;
}

.ingest-svg,
.step-visual svg {
    display: block;
    width: 100%;
    max-width: 760px;
    height: auto;
    margin: 0 auto;
}

.step-controls {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-top: 16px;
}

.step-prev,
.step-next {
    font-family: inherit;
    font-size: 0.92rem;
    font-weight: 600;
    color: #0f4c81;
    background: #fff;
    border: 1px solid #0f4c81;
    border-radius: 2px;
    padding: 8px 18px;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, opacity 0.2s;
}

.step-next {
    background: #0f4c81;
    color: #f4f4f8;
}

.step-prev:hover {
    background: #eef1f5;
}

.step-next:hover {
    background: #0a3559;
}

.step-prev[disabled],
.step-next[disabled] {
    opacity: 0.35;
    cursor: default;
    pointer-events: none;
}

/* ===== Closing principles ===== */
.principles {
    max-width: 760px;
    margin: 10px auto;
    padding: 10px 20px;
    text-align: center;
}

.principles p {
    font-size: 1.15rem;
    line-height: 1.7;
    color: #333;
    margin: 0 0 16px;
}

.question-ladder {
    list-style: none;
    padding: 0;
    margin: 0 auto;
    max-width: 460px;
    text-align: left;
}

.question-ladder li {
    font-size: 1.1rem;
    line-height: 1.5;
    color: #09090A;
    padding: 8px 0 8px 28px;
    position: relative;
    border-bottom: 1px solid #ececf1;
}

.question-ladder li:last-child {
    border-bottom: none;
}

.question-ladder li::before {
    content: "\2192";  /* → */
    position: absolute;
    left: 0;
    color: #EAD553;
    font-weight: 700;
}

/* Flowchart scene */
.flow-svg {
    display: block;
    width: 100%;
    max-width: 760px;
    height: auto;
    margin: 0 auto;
}

/* ===== Scroll-reveal animation ===== */
.js .reveal {
    opacity: 0;
}

.in-view .reveal {
    animation: bubbleIn 0.6s ease forwards;
    animation-delay: var(--d, 0s);
}

@keyframes bubbleIn {
    from { opacity: 0; transform: translateY(16px) scale(0.985); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}

.flow-line {
    stroke-dasharray: 320;
}

.js .flow-line {
    stroke-dashoffset: 320;
}

.in-view .flow-line {
    animation: flowDraw 0.9s ease forwards 0.35s;
}

@keyframes flowDraw {
    to { stroke-dashoffset: 0; }
}

@media (prefers-reduced-motion: reduce) {
    .js .reveal { opacity: 1; }
    .in-view .reveal { animation: none; }
    .js .flow-line { stroke-dashoffset: 0; }
    .in-view .flow-line { animation: none; }
}

/* ===== Footer ===== */
footer {
    background-color: #2b2b2b;
    color: #f4f4f8;
    text-align: center;
    padding: 10px 0;
    margin-top: 30px;
}

footer p {
    margin: 0;
}

/* ===== Images ===== */
img {
    max-width: 100%;
    height: auto;
    margin: 20px 0;
}

/* ===== Stub / Coming Soon ===== */
.stub {
    text-align: center;
    padding: 60px 20px;
    max-width: 600px;
    margin: 0 auto;
}

.stub p {
    font-size: 1.2rem;
    color: #555;
    line-height: 1.6;
}