/*
 * Guided-curriculum presentation for the server-rendered /learn owner.
 *
 * The complete guide corpus remains useful without JavaScript. The companion
 * enhancement script adds focused-reader state without changing route, SEO,
 * schema, or content ownership.
 */
.symstr-static-content--learn {
    color: var(--ss-body);
    font-size: 16px;
    line-height: 1.65;
    margin-left: 50%;
    margin-top: -40px;
    max-width: none;
    padding: 15px 20px 60px;
    transform: translateX(-50%);
    width: min(var(--ss-wide), calc(100vw - 40px));
}

.symstr-static-content--learn .symstr-seo-prerender,
.symstr-static-content--learn .symstr-seo-prerender__inner {
    margin: 0 auto;
    max-width: var(--ss-wide);
}

.symstr-static-content--learn .symstr-seo-prerender__header {
    border-bottom: 1px solid var(--ss-border);
    padding: 0 0 20px;
}

.symstr-static-content--learn .symstr-seo-prerender__eyebrow {
    display: none;
}

.symstr-static-content--learn .symstr-seo-prerender__guide-category {
    color: var(--ss-primary-hover);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.08em;
    margin: 0 0 10px;
    text-transform: uppercase;
}

.symstr-static-content--learn h1,
.symstr-static-content--learn h2,
.symstr-static-content--learn h3 {
    color: var(--ss-heading);
    line-height: 1.2;
}

.symstr-static-content--learn h1 {
    font-size: clamp(40px, 5vw, 52px);
    letter-spacing: -0.04em;
    line-height: 1.05;
    margin: 0;
}

.symstr-static-content--learn .symstr-seo-prerender__lead {
    color: var(--ss-body);
    font-size: clamp(16px, 2vw, 18px);
    margin: 10px 0 0;
    max-width: 72ch;
}

.symstr-static-content--learn .symstr-seo-prerender__byline,
.symstr-static-content--learn .symstr-seo-prerender__guide-meta {
    color: var(--ss-muted);
    font-size: 14px;
}

.symstr-static-content--learn .symstr-seo-prerender__byline {
    margin: 10px 0 0;
}

.symstr-static-content--learn .symstr-learn-start,
.symstr-static-content--learn .symstr-learn-continue,
.symstr-static-content--learn .symstr-seo-prerender__links a {
    align-items: center;
    background: var(--ss-primary);
    border: 1px solid var(--ss-primary);
    border-radius: var(--ss-radius-control);
    color: var(--ss-surface);
    display: inline-flex;
    font-weight: 800;
    justify-content: center;
    min-height: 44px;
    padding: 10px 20px;
    text-decoration: none;
    transition: background-color 150ms ease-out, border-color 150ms ease-out;
}

.symstr-static-content--learn .symstr-learn-start {
    margin-top: 15px;
}

/* The theme gives every entry-content figure the wide-image breakout
   (width, margin-left: 50%, translateX(-50%)); this container already breaks
   out, so the learn figures cancel it and stay in their column. */
.symstr-static-content--learn .symstr-learn-hero__figure {
    margin: 20px 0 0;
    transform: none;
    width: auto;
}

/* No frame: the photos carry their own light backdrop, so a border or tinted
   box around them reads as a placeholder (owner, 2026-10-08). */
.symstr-static-content--learn .symstr-learn-hero__figure img {
    aspect-ratio: 16 / 9;
    border-radius: var(--ss-radius-card);
    display: block;
    height: auto;
    object-fit: cover;
    width: 100%;
}

.symstr-static-content--learn .symstr-learn-start:hover,
.symstr-static-content--learn .symstr-learn-continue:hover,
.symstr-static-content--learn .symstr-seo-prerender__links a:hover {
    background: var(--ss-primary-hover);
    border-color: var(--ss-primary-hover);
    color: var(--ss-surface);
}

.symstr-static-content--learn a:focus-visible,
.symstr-static-content--learn select:focus-visible,
.symstr-static-content--learn [tabindex="-1"]:focus-visible {
    outline: 2px solid var(--ss-primary);
    outline-offset: 3px;
}

.symstr-static-content--learn .symstr-learn-curriculum {
    display: grid;
    grid-template-columns: minmax(270px, 0.68fr) minmax(0, 1.32fr);
    min-width: 0;
}

.symstr-static-content--learn .symstr-learn-curriculum__index {
    border-right: 1px solid var(--ss-border);
    min-width: 0;
    padding: 25px 30px 40px 0;
}

.symstr-static-content--learn .symstr-seo-prerender__toc {
    display: block;
    margin: 0;
    padding: 0;
}

.symstr-static-content--learn .symstr-seo-prerender__toc-group + .symstr-seo-prerender__toc-group {
    margin-top: 20px;
}

.symstr-static-content--learn .symstr-seo-prerender__toc-category {
    color: var(--ss-muted);
    font-size: 12px;
    letter-spacing: 0.06em;
    margin: 0 0 5px;
    text-transform: uppercase;
}

.symstr-static-content--learn .symstr-seo-prerender__toc ul {
    border-top: 1px solid var(--ss-border);
    list-style: none;
    margin: 0;
    padding: 0;
}

.symstr-static-content--learn .symstr-seo-prerender__toc li {
    border-bottom: 1px solid var(--ss-border);
    margin: 0;
}

.symstr-static-content--learn .symstr-seo-prerender__toc a {
    align-items: center;
    color: var(--ss-body);
    display: grid;
    gap: 15px;
    grid-template-columns: 35px minmax(0, 1fr);
    min-height: 2.75rem;
    padding: 10px;
    text-decoration: none;
    transition: background-color 150ms ease-out, color 150ms ease-out;
}

.symstr-static-content--learn .symstr-seo-prerender__toc a:hover {
    background: var(--ss-surface-muted);
    color: var(--ss-heading);
}

.symstr-static-content--learn .symstr-seo-prerender__toc a[aria-current="true"] {
    background: var(--ss-primary-soft);
    color: var(--ss-primary-hover);
    font-weight: 800;
}

.symstr-static-content--learn .symstr-seo-prerender__toc-number {
    align-items: center;
    border: 1px solid var(--ss-border-strong);
    border-radius: 999px;
    color: var(--ss-muted);
    display: inline-flex;
    font-size: 12px;
    font-variant-numeric: tabular-nums;
    height: 30px;
    justify-content: center;
    width: 30px;
}

.symstr-static-content--learn .symstr-seo-prerender__toc a[aria-current="true"] .symstr-seo-prerender__toc-number {
    background: var(--ss-primary);
    border-color: var(--ss-primary);
    color: var(--ss-surface);
}

.symstr-static-content--learn .symstr-seo-prerender__toc-title {
    min-width: 0;
}

.symstr-static-content--learn .symstr-learn-mobile-label,
.symstr-static-content--learn .symstr-learn-mobile-select {
    display: none;
}

.symstr-static-content--learn .symstr-seo-prerender__sections {
    min-width: 0;
    padding: 30px 0 40px 40px;
}

.symstr-static-content--learn .symstr-seo-prerender__sections > section {
    border-top: 1px solid var(--ss-border);
    margin: 0;
    padding: 40px 0 0;
    scroll-margin-top: 140px;
}

.symstr-static-content--learn .symstr-seo-prerender__sections > section:first-child {
    border-top: 0;
    padding-top: 0;
}

.symstr-static-content--learn .is-enhanced .symstr-seo-prerender__sections > section {
    border-top: 0;
    padding-top: 0;
}

.symstr-static-content--learn .symstr-seo-prerender__sections > section[hidden] {
    display: none;
}

.symstr-static-content--learn .symstr-seo-prerender__guide {
    margin: 0;
    outline: none;
}

.symstr-static-content--learn .symstr-seo-prerender__guide-header {
    border-bottom: 1px solid var(--ss-border);
    padding-bottom: 20px;
}

.symstr-static-content--learn .symstr-seo-prerender__sections h2 {
    font-size: clamp(32px, 4vw, 44px);
    letter-spacing: -0.035em;
    margin: 0;
}

.symstr-static-content--learn .symstr-seo-prerender__guide-intro {
    color: var(--ss-body);
    font-size: 17px;
    line-height: 1.7;
    margin: 20px 0 0;
    max-width: 65ch;
}

.symstr-static-content--learn .symstr-seo-prerender__guide-figure {
    margin: 25px 0 0;
    max-width: 65ch;
    transform: none;
    width: auto;
}

/* Same frame as the hub hero (one 16:9 crop, card radius, no border), so
   every learn image reads as one series. */
.symstr-static-content--learn .symstr-seo-prerender__guide-figure img {
    aspect-ratio: 16 / 9;
    border-radius: var(--ss-radius-card);
    display: block;
    height: auto;
    object-fit: cover;
    width: 100%;
}

.symstr-static-content--learn .symstr-learn-hero__figure figcaption,
.symstr-static-content--learn .symstr-seo-prerender__guide-figure figcaption {
    color: var(--ss-muted);
    font-size: 14px;
    margin: 10px 0 0;
}

.symstr-static-content--learn .symstr-seo-prerender__guide-outline {
    border-bottom: 1px solid var(--ss-border);
    margin-top: 25px;
    padding-bottom: 20px;
}

.symstr-static-content--learn .symstr-seo-prerender__guide-outline-title {
    color: var(--ss-heading);
    margin: 0 0 10px;
}

.symstr-static-content--learn .symstr-seo-prerender__guide-outline ol {
    display: grid;
    gap: 5px;
    margin: 0;
    padding-left: 25px;
}

.symstr-static-content--learn .symstr-seo-prerender__guide-outline a {
    color: var(--ss-muted);
    min-height: 30px;
    text-decoration: none;
}

.symstr-static-content--learn .symstr-seo-prerender__guide-outline a:hover {
    color: var(--ss-primary-hover);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.symstr-static-content--learn .symstr-seo-prerender__guide-meta {
    margin: 15px 0 0;
}

.symstr-static-content--learn .symstr-learn-continue {
    margin-top: 15px;
}

.symstr-static-content--learn .symstr-seo-prerender__guide-body {
    margin-top: 40px;
    max-width: 65ch;
}

.symstr-static-content--learn .symstr-seo-prerender__guide-section {
    scroll-margin-top: 140px;
}

.symstr-static-content--learn .symstr-seo-prerender__guide-section + .symstr-seo-prerender__guide-section {
    border-top: 1px solid var(--ss-border);
    margin-top: 35px;
    padding-top: 35px;
}

.symstr-static-content--learn .symstr-seo-prerender__sections h3 {
    font-size: 22px;
    letter-spacing: -0.015em;
    margin: 0 0 10px;
}

.symstr-static-content--learn .symstr-seo-prerender__sections p {
    margin: 10px 0 0;
}

.symstr-static-content--learn .symstr-seo-prerender__context-links {
    border-top: 1px solid var(--ss-border);
    color: var(--ss-muted);
    font-size: 15px;
    margin-top: 35px;
    padding-top: 20px;
}

.symstr-static-content--learn a {
    color: var(--ss-primary-hover);
    text-decoration-thickness: 0.08em;
    text-underline-offset: 0.16em;
}

.symstr-static-content--learn a:hover {
    color: var(--ss-primary);
}

.symstr-static-content--learn .symstr-learn-guide-nav {
    align-items: center;
    border-top: 1px solid var(--ss-border);
    display: grid;
    gap: 15px;
    grid-template-columns: 1fr auto 1fr;
    margin-top: 40px;
    padding-top: 20px;
}

.symstr-static-content--learn .symstr-learn-guide-nav a {
    color: var(--ss-muted);
    display: grid;
    min-height: 44px;
    text-decoration: none;
}

.symstr-static-content--learn .symstr-learn-guide-nav a:hover {
    color: var(--ss-heading);
}

.symstr-static-content--learn .symstr-learn-guide-nav a span,
.symstr-static-content--learn .symstr-learn-guide-nav__position {
    color: var(--ss-muted);
    font-size: 12px;
}

.symstr-static-content--learn .symstr-learn-guide-nav a strong {
    color: var(--ss-heading);
    font-size: 14px;
}

.symstr-static-content--learn .symstr-learn-guide-nav__next {
    text-align: right;
}

.symstr-static-content--learn .symstr-learn-guide-nav__position {
    white-space: nowrap;
}

.symstr-static-content--learn .symstr-seo-prerender__links {
    border-top: 1px solid var(--ss-border);
    margin: 0;
    padding-top: 30px;
}

@media (min-width: 901px) {
    .symstr-static-content--learn .symstr-learn-hero {
        align-items: center;
        column-gap: 40px;
        display: grid;
        grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    }

    .symstr-static-content--learn .symstr-learn-hero__figure {
        margin-top: 0;
    }

    .symstr-static-content--learn .is-enhanced .symstr-seo-prerender__toc {
        max-height: calc(100vh - 160px);
        overflow-y: auto;
        position: sticky;
        top: 120px;
    }
}

@media (max-width: 900px) {
    .symstr-static-content--learn {
        padding: 15px 20px 100px;
    }

    .symstr-static-content--learn .symstr-learn-curriculum {
        display: block;
    }

    .symstr-static-content--learn .symstr-learn-curriculum__index {
        border-bottom: 1px solid var(--ss-border);
        border-right: 0;
        padding: 25px 0;
    }

    .symstr-static-content--learn .is-enhanced .symstr-learn-mobile-label,
    .symstr-static-content--learn .is-enhanced .symstr-learn-mobile-select {
        display: block;
    }

    .symstr-static-content--learn .symstr-learn-mobile-label {
        color: var(--ss-heading);
        font-size: 13px;
        font-weight: 800;
        margin-bottom: 5px;
    }

    .symstr-static-content--learn .symstr-learn-mobile-select {
        appearance: auto;
        background: var(--ss-surface);
        border: 1px solid var(--ss-border-strong);
        border-radius: var(--ss-radius-control);
        color: var(--ss-heading);
        font: inherit;
        min-height: 50px;
        padding: 10px;
        width: 100%;
    }

    .symstr-static-content--learn .is-enhanced .symstr-seo-prerender__toc {
        display: none;
    }

    .symstr-static-content--learn .symstr-seo-prerender__sections {
        padding: 30px 0 40px;
    }
}

@media (max-width: 600px) {
    .symstr-static-content--learn {
        padding-left: 15px;
        padding-right: 15px;
        width: calc(100vw - 30px);
    }

    .symstr-static-content--learn h1 {
        font-size: 40px;
    }

    .symstr-static-content--learn .symstr-seo-prerender__lead {
        font-size: 16px;
    }

    .symstr-static-content--learn .symstr-seo-prerender__sections h2 {
        font-size: 32px;
    }

    .symstr-static-content--learn .symstr-learn-guide-nav {
        align-items: stretch;
        grid-template-columns: 1fr 1fr;
    }

    .symstr-static-content--learn .symstr-learn-guide-nav__position {
        grid-column: 1 / -1;
        grid-row: 1;
        text-align: center;
    }
}

@media (prefers-reduced-motion: reduce) {
    .symstr-static-content--learn *,
    .symstr-static-content--learn *::before,
    .symstr-static-content--learn *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
    }
}