/* Hallmark · pre-emit critique: P5 H5 E4 S5 R5 V5 */
/* Hallmark · macrostructure: Tum Kantawee Brand Hub · hero: full-bleed luxury image + opt-in tool
 * theme: preserved brand system · forest/ivory/coral · display: Bodoni Moda + Noto Serif Thai · body: Noto Sans Thai · axes: dark-hero / roman-serif / chromatic-green
 * studied: no · nav: N6 masthead · footer: Ft6 letter close · contrast: pass · mobile: pass
 */

:root {
    --color-paper: hsl(42 24% 96%);
    --color-paper-soft: hsl(42 22% 91%);
    --color-panel: hsl(43 23% 98%);
    --color-ink: hsl(164 35% 12%);
    --color-ink-soft: hsl(166 20% 24%);
    --color-muted: hsl(158 10% 42%);
    --color-rule: hsl(40 18% 78%);
    --color-dark: hsl(164 35% 11%);
    --color-dark-soft: hsl(160 32% 17%);
    --color-dark-translucent: hsl(164 35% 11% / 0.84);
    --color-paper-translucent: hsl(42 24% 96% / 0.9);
    --color-paper-glass: hsl(42 24% 96% / 0.08);
    --color-paper-glass-border: hsl(42 24% 96% / 0.38);
    --color-paper-form-border: hsl(42 24% 96% / 0.34);
    --color-dark-rule: hsl(40 38% 86% / 0.26);
    --color-brass: hsl(39 45% 48%);
    --color-brass-soft: hsl(40 38% 86%);
    --color-coral: hsl(16 78% 57%);
    --color-coral-soft: hsl(16 67% 92%);
    --color-accent-ink: hsl(42 24% 96%);
    --color-focus: hsl(16 86% 47%);
    --color-success: hsl(145 55% 30%);
    --color-error: hsl(358 64% 43%);
    --shadow-soft: 0 24px 80px hsl(164 35% 12% / 0.16);
    --shadow-tight: 0 14px 32px hsl(164 35% 12% / 0.14);
    --hero-shade: linear-gradient(90deg, hsl(164 35% 8% / 0.92), hsl(164 35% 8% / 0.58) 48%, hsl(164 35% 8% / 0.18));
    --hero-bottom: linear-gradient(180deg, transparent 62%, hsl(42 24% 96%));
    --font-display: "Bodoni Moda", "Noto Serif Thai", serif;
    --font-body: "Noto Sans Thai", sans-serif;
    --font-mono: "Geist Mono", monospace;
    --space-2xs: 0.25rem;
    --space-xs: 0.5rem;
    --space-sm: 0.75rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    --space-5xl: 8rem;
    --radius-sm: 4px;
    --radius-md: 6px;
    --container: 76rem;
    --header-height: 4.25rem;
}

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

html,
body {
    min-width: 0;
    overflow-x: clip;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    margin: 0;
    background: var(--color-paper);
    color: var(--color-ink-soft);
    font-family: var(--font-body);
    line-height: 1.68;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
}

img {
    display: block;
    max-width: 100%;
    height: auto;
}

a {
    color: inherit;
    text-decoration: none;
}

button,
input,
select {
    font: inherit;
}

[hidden] {
    display: none !important;
}

.skip-link {
    position: fixed;
    inset-block-start: var(--space-md);
    inset-inline-start: var(--space-md);
    z-index: 1000;
    padding: var(--space-sm) var(--space-md);
    background: var(--color-dark);
    color: var(--color-paper);
    border-radius: var(--radius-sm);
    transform: translateY(-160%);
    transition: transform 160ms ease;
    white-space: nowrap;
}

.skip-link:focus-visible {
    transform: translateY(0);
}

h1,
h2,
h3,
p {
    margin: 0;
}

h1,
h2,
h3 {
    min-width: 0;
    overflow-wrap: anywhere;
    color: var(--color-ink);
    font-family: var(--font-display);
    line-height: 1.05;
}

h1 {
    max-width: 10ch;
    color: var(--color-paper);
    font-size: 3.65rem;
    font-weight: 700;
}

h2 {
    max-width: 14ch;
    font-size: 2.55rem;
}

h3 {
    font-size: 1.8rem;
}

p {
    max-width: 68ch;
}

.kicker {
    color: var(--color-brass);
    font-family: var(--font-mono);
    font-size: 0.74rem;
    font-weight: 600;
    letter-spacing: 0;
    line-height: 1.3;
    text-transform: uppercase;
}

.site-header {
    position: sticky;
    inset-block-start: 0;
    z-index: 100;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    min-height: var(--header-height);
    padding: var(--space-sm) var(--space-md);
    background: var(--color-paper-translucent);
    border-block-end: 1px solid var(--color-rule);
    backdrop-filter: blur(18px);
}

.brand-mark {
    display: inline-flex;
    gap: var(--space-sm);
    align-items: baseline;
    min-width: 0;
    line-height: 1;
}

.brand-mark span {
    color: var(--color-ink);
    font-family: var(--font-display);
    font-size: 1.08rem;
    font-weight: 700;
    white-space: nowrap;
}

.brand-mark small {
    display: none;
    color: var(--color-muted);
    font-family: var(--font-mono);
    font-size: 0.68rem;
    white-space: nowrap;
}

.site-nav {
    display: none;
    align-items: center;
    gap: var(--space-lg);
    justify-self: end;
}

.site-nav a,
.mobile-sheet a,
.button,
.site-footer a {
    white-space: nowrap;
}

.site-nav a:not(.nav-action) {
    color: var(--color-muted);
    font-size: 0.92rem;
}

.nav-action {
    display: inline-flex;
    align-items: center;
    min-height: 2.5rem;
    padding-inline: var(--space-md);
    background: var(--color-dark);
    color: var(--color-paper);
    border-radius: var(--radius-sm);
    font-weight: 700;
}

.menu-toggle {
    display: inline-grid;
    place-items: center;
    width: 2.75rem;
    min-height: 2.75rem;
    color: var(--color-ink);
    background: var(--color-panel);
    border: 1px solid var(--color-rule);
    border-radius: var(--radius-sm);
    cursor: pointer;
    white-space: nowrap;
}

.menu-toggle svg {
    width: 1.15rem;
    height: 1.15rem;
}

.menu-toggle i {
    position: relative;
    display: block;
    width: 1.15rem;
    height: 1.15rem;
}

.menu-toggle i::before {
    content: "";
    position: absolute;
    inset-inline: 0;
    inset-block-start: 50%;
    height: 2px;
    background: currentColor;
    border-radius: 999px;
    box-shadow: 0 -5px 0 currentColor, 0 5px 0 currentColor;
    transform: translateY(-50%);
}

.mobile-sheet {
    position: fixed;
    inset-block-start: var(--header-height);
    inset-inline: var(--space-md);
    z-index: 99;
    display: grid;
    gap: var(--space-xs);
    padding: var(--space-md);
    background: var(--color-panel);
    border: 1px solid var(--color-rule);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-tight);
}

.mobile-sheet a {
    display: flex;
    align-items: center;
    min-height: 2.75rem;
    padding-inline: var(--space-sm);
    color: var(--color-ink);
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 2.9rem;
    padding: var(--space-sm) var(--space-lg);
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-weight: 700;
    line-height: 1;
    transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease, transform 160ms ease;
}

.button--primary {
    background: var(--color-coral);
    color: var(--color-accent-ink);
    border-color: var(--color-coral);
}

.button--primary:hover {
    background: var(--color-brass);
    border-color: var(--color-brass);
}

.button--glass {
    background: var(--color-paper-glass);
    color: var(--color-paper);
    border-color: var(--color-paper-glass-border);
}

.button--dark {
    background: var(--color-dark);
    color: var(--color-paper);
    border-color: var(--color-dark);
}

.button--wide {
    width: 100%;
}

.button:active {
    transform: translateY(1px);
}

.button:focus-visible,
.site-nav a:focus-visible,
.mobile-sheet a:focus-visible,
.menu-toggle:focus-visible,
input:focus-visible,
select:focus-visible,
.brand-mark:focus-visible,
.site-footer a:focus-visible {
    outline: 2px solid var(--color-focus);
    outline-offset: 2px;
}

.hub-hero {
    position: relative;
    isolation: isolate;
    min-height: calc(100svh - var(--header-height));
    display: grid;
    align-items: end;
    padding: var(--space-4xl) var(--space-md) var(--space-3xl);
    background: var(--color-dark);
}

.hero-bg,
.hero-overlay {
    position: absolute;
    inset: 0;
    z-index: -2;
}

.hero-bg {
    background-image: url("assets/tum-funnel-hub-hero.png");
    background-size: cover;
    background-position: center;
}

.hero-overlay {
    z-index: -1;
    background: var(--hero-shade), var(--hero-bottom);
}

.hub-hero__inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-2xl);
    width: min(100%, var(--container));
    margin-inline: auto;
}

.hub-hero__copy {
    display: grid;
    gap: var(--space-lg);
    min-width: 0;
}

.hero-lede {
    color: var(--color-paper);
    font-size: 1.08rem;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    align-items: center;
}

.hero-note {
    color: var(--color-brass-soft);
    font-family: var(--font-mono);
    font-size: 0.78rem;
}

.hero-optin,
.lead-form {
    display: grid;
    gap: var(--space-md);
    min-width: 0;
    padding: var(--space-lg);
    background: var(--color-paper-translucent);
    border: 1px solid var(--color-paper-form-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-soft);
    backdrop-filter: blur(20px);
}

.hero-optin h2 {
    max-width: 12ch;
    font-size: 2rem;
}

.hero-optin p,
.lead-form small {
    color: var(--color-ink-soft);
}

label {
    display: grid;
    gap: var(--space-xs);
    min-width: 0;
}

label span {
    color: var(--color-ink);
    font-weight: 700;
}

input,
select {
    width: 100%;
    min-height: 2.9rem;
    padding: var(--space-sm) var(--space-md);
    color: var(--color-ink);
    background: var(--color-panel);
    border: 1px solid var(--color-rule);
    border-radius: var(--radius-sm);
    outline: 2px solid transparent;
    outline-offset: 1px;
    transition: border-color 160ms ease, background-color 160ms ease;
}

input:hover,
select:hover {
    border-color: var(--color-dark-soft);
}

input:disabled,
select:disabled,
button:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

small[data-optin-status] {
    min-height: 1.3em;
    color: var(--color-muted);
}

small[data-optin-status].is-success {
    color: var(--color-success);
}

small[data-optin-status].is-error {
    color: var(--color-error);
}

.section-shell {
    width: min(100%, var(--container));
    margin-inline: auto;
    padding-inline: var(--space-md);
}

.story-section,
.book-section,
.mission-section,
.path-section,
.flywheel-section,
.proof-section,
.lead-section,
.subpage-hero,
.subpage-content {
    padding-block: var(--space-4xl);
}

.story-section {
    background: var(--color-paper);
}

.story-grid,
.book-grid,
.mission-grid,
.flywheel-grid,
.proof-grid,
.lead-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-2xl);
}

.story-copy,
.book-copy,
.mission-copy {
    display: grid;
    gap: var(--space-md);
    align-content: start;
    font-size: 1.08rem;
}

.story-copy strong,
.book-copy strong,
.mission-copy strong {
    color: var(--color-dark);
}

.editorial-gallery,
.mission-gallery {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-sm);
    min-width: 0;
}

.editorial-gallery figure,
.mission-gallery figure {
    min-width: 0;
    margin: 0;
    overflow: hidden;
    background: var(--color-dark);
    border-radius: var(--radius-md);
}

.editorial-gallery img,
.mission-gallery img,
.book-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.editorial-gallery figure {
    aspect-ratio: 16 / 10;
}

.editorial-gallery .gallery-main {
    aspect-ratio: 4 / 5;
}

.book-section {
    background: var(--color-dark);
    color: var(--color-paper);
}

.book-section h2,
.book-section strong {
    color: var(--color-paper);
}

.book-section p {
    color: var(--color-paper-soft);
}

.book-visual {
    position: relative;
    min-width: 0;
    overflow: hidden;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-soft);
}

.book-visual img {
    aspect-ratio: 16 / 10;
}

.book-card {
    position: absolute;
    inset-block-end: var(--space-lg);
    inset-inline-start: var(--space-lg);
    display: grid;
    gap: var(--space-xs);
    width: min(18rem, calc(100% - var(--space-xl)));
    padding: var(--space-lg);
    background: var(--color-dark-translucent);
    border: 1px solid var(--color-dark-rule);
    border-radius: var(--radius-md);
    backdrop-filter: blur(18px);
}

.book-card span,
.book-card small {
    color: var(--color-brass-soft);
    font-family: var(--font-mono);
    font-size: 0.72rem;
}

.book-card strong {
    color: var(--color-paper);
    font-family: var(--font-display);
    font-size: 2rem;
    line-height: 1;
}

.mission-section {
    background: var(--color-paper);
}

.mission-gallery {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.mission-gallery figure {
    aspect-ratio: 1;
}

.mission-gallery figure:first-child {
    grid-column: 1 / -1;
    aspect-ratio: 16 / 9;
}

.mission-path-diagram {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-md);
    min-width: 0;
}

.mission-path-diagram article {
    position: relative;
    display: grid;
    gap: var(--space-sm);
    min-width: 0;
    padding: var(--space-md);
    background: var(--color-panel);
    border: 1px solid var(--color-rule);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-tight);
}

.mission-path-diagram article::after {
    content: "";
    position: absolute;
    inset-block-end: calc(var(--space-md) * -1);
    inset-inline-start: 50%;
    width: 1px;
    height: var(--space-md);
    background: var(--color-brass);
}

.mission-path-diagram article:last-child::after {
    content: none;
}

.mission-path-diagram img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    border-radius: var(--radius-sm);
}

.mission-path-diagram span {
    color: var(--color-brass);
    font-family: var(--font-mono);
    font-size: 0.76rem;
}

.mission-path-diagram h3 {
    font-size: 2rem;
}

.mission-path-diagram p {
    color: var(--color-ink-soft);
}

.path-section,
.proof-section {
    background: var(--color-paper-soft);
}

.section-heading {
    display: grid;
    gap: var(--space-sm);
    margin-block-end: var(--space-2xl);
}

.section-heading p {
    font-size: 1.06rem;
}

.path-section .section-heading {
    max-width: 58rem;
}

.path-section .section-heading h2 {
    max-width: 22ch;
}

.path-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-lg);
}

.path-card {
    display: grid;
    min-width: 0;
    overflow: hidden;
    background: var(--color-panel);
    border: 1px solid var(--color-rule);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-tight);
}

.path-card__media {
    min-width: 0;
    background: var(--color-dark);
}

.path-card__media img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
}

.path-card__media--dark {
    display: grid;
    place-items: center;
    min-height: 13rem;
    background: linear-gradient(135deg, var(--color-dark), var(--color-dark-soft));
}

.path-card__media--dark span {
    color: var(--color-brass-soft);
    font-family: var(--font-display);
    font-size: 3rem;
}

.path-card__body {
    display: grid;
    gap: var(--space-md);
    padding: var(--space-lg);
}

.path-card dl {
    display: grid;
    gap: var(--space-xs);
    margin: 0;
}

.path-card dl div {
    display: grid;
    gap: var(--space-2xs);
    padding-block: var(--space-sm);
    border-block-start: 1px solid var(--color-rule);
}

.path-card dt {
    color: var(--color-brass);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    text-transform: uppercase;
}

.path-card dd {
    margin: 0;
    color: var(--color-ink);
    font-weight: 700;
}

.flywheel-section {
    background: var(--color-dark);
    color: var(--color-paper);
}

.flywheel-section h2,
.flywheel-section strong {
    color: var(--color-paper);
}

.flywheel-section p {
    color: var(--color-paper-soft);
}

.flywheel-map {
    display: grid;
    gap: var(--space-sm);
}

.flywheel-map div {
    display: grid;
    gap: var(--space-2xs);
    padding: var(--space-lg);
    border: 1px solid var(--color-dark-rule);
    border-radius: var(--radius-sm);
}

.flywheel-map span {
    color: var(--color-brass-soft);
    font-family: var(--font-mono);
}

.flywheel-map small {
    color: var(--color-brass-soft);
}

.proof-cards {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-md);
}

.proof-cards article {
    padding: var(--space-lg);
    background: var(--color-panel);
    border: 1px solid var(--color-rule);
    border-radius: var(--radius-md);
}

.proof-cards strong {
    display: block;
    color: var(--color-coral);
    font-family: var(--font-display);
    font-size: 2.25rem;
    line-height: 1;
}

.proof-cards p {
    margin-block-start: var(--space-sm);
}

.proof-showcase {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-md);
}

.proof-feature {
    display: grid;
    min-width: 0;
    overflow: hidden;
    background: var(--color-panel);
    border: 1px solid var(--color-rule);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-tight);
}

.proof-feature img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
}

.proof-feature div {
    display: grid;
    gap: var(--space-sm);
    padding: var(--space-lg);
}

.proof-feature h3 {
    font-size: 1.8rem;
}

.lead-section {
    background: var(--color-coral-soft);
}

.lead-copy {
    display: grid;
    gap: var(--space-md);
    align-content: start;
}

.site-footer {
    display: grid;
    gap: var(--space-lg);
    padding: var(--space-2xl) var(--space-md);
    background: var(--color-dark);
    color: var(--color-paper);
}

.site-footer div {
    display: grid;
    gap: var(--space-xs);
}

.site-footer strong {
    color: var(--color-paper);
    font-family: var(--font-display);
    font-size: 1.65rem;
}

.site-footer span {
    color: var(--color-brass-soft);
}

.site-footer a {
    width: fit-content;
    color: var(--color-paper);
    text-decoration: underline;
    text-underline-offset: 0.18em;
}

.subpage-hero {
    background: var(--color-dark);
    color: var(--color-paper);
}

.subpage-hero h1,
.subpage-hero h2 {
    color: var(--color-paper);
}

.subpage-hero p {
    color: var(--color-paper-soft);
}

.subpage-grid,
.subpage-content-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-2xl);
}

.subpage-panel {
    display: grid;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: var(--color-paper-glass);
    border: 1px solid var(--color-dark-rule);
    border-radius: var(--radius-md);
}

.subpage-list {
    display: grid;
    gap: var(--space-sm);
    margin: 0;
    padding: 0;
    list-style: none;
}

.subpage-list li {
    padding: var(--space-md);
    background: var(--color-paper-soft);
    border: 1px solid var(--color-rule);
    border-radius: var(--radius-sm);
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }
}

@media (hover: hover) and (pointer: fine) {
    .button:hover,
    .nav-action:hover {
        transform: translateY(-1px);
    }
}

@media (min-width: 40rem) {
    .brand-mark small {
        display: inline;
    }

    .site-header,
    .hub-hero,
    .section-shell,
    .site-footer {
        padding-inline: var(--space-xl);
    }

    h1 {
        font-size: 5rem;
    }

    h2 {
        font-size: 3.1rem;
    }

    .proof-cards {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .proof-showcase {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .editorial-gallery {
        grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    }

    .editorial-gallery .gallery-main {
        grid-row: span 2;
    }
}

@media (min-width: 60rem) {
    .site-header {
        grid-template-columns: auto minmax(0, 1fr);
    }

    .site-nav {
        display: flex;
    }

    .menu-toggle {
        display: none;
    }

    .hub-hero {
        padding-block: var(--space-5xl) var(--space-4xl);
    }

    .hub-hero__inner {
        grid-template-columns: minmax(0, 1fr) minmax(20rem, 0.45fr);
        align-items: end;
    }

    h1 {
        font-size: 6.8rem;
    }

    .hero-lede {
        font-size: 1.2rem;
    }

    .story-grid,
    .book-grid,
    .mission-grid,
    .flywheel-grid,
    .proof-grid,
    .lead-grid,
    .subpage-grid,
    .subpage-content-grid {
        grid-template-columns: minmax(0, 0.7fr) minmax(0, 1fr);
        align-items: start;
    }

    .path-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .path-card {
        grid-template-rows: auto minmax(0, 1fr);
    }

    .mission-grid {
        grid-template-columns: minmax(0, 0.58fr) minmax(0, 1fr);
    }

    .mission-gallery {
        grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    }

    .mission-gallery figure:first-child {
        grid-column: auto;
        grid-row: span 2;
        aspect-ratio: auto;
    }

    .mission-path-diagram {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        align-items: stretch;
    }

    .mission-path-diagram article::after {
        inset-block-start: 50%;
        inset-block-end: auto;
        inset-inline-start: auto;
        inset-inline-end: calc(var(--space-md) * -1);
        width: var(--space-md);
        height: 1px;
        transform: translateY(-50%);
    }

    .proof-showcase {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .proof-feature--wide {
        grid-column: span 3;
        grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    }

    .proof-feature--wide img {
        height: 100%;
        aspect-ratio: auto;
    }

    .site-footer {
        grid-template-columns: minmax(0, 1fr) auto;
        align-items: end;
    }
}

@media (min-width: 90rem) {
    .story-section,
    .book-section,
    .mission-section,
    .path-section,
    .flywheel-section,
    .proof-section,
    .lead-section,
    .subpage-hero,
    .subpage-content {
        padding-block: var(--space-5xl);
    }
}