/* ==========================================================================
   RERE-CORDS CSS Stylesheet
   Theme: Extreme Minimalist Art Exhibition
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Root Variables & Reset
   -------------------------------------------------------------------------- */
:root {
    /* Font stacks */
    --font-header: 'Playfair Display', 'Cinzel', 'Noto Serif SC', 'Noto Serif JP', Georgia, serif;
    --font-body: 'Alegreya Sans', 'Noto Sans SC', 'Noto Sans JP', -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Minimalist Editorial Color Palette */
    --color-bg-base: #f5f4f0;          /* Warm Paper White */
    --color-bg-card: #ffffff;          /* Crisp White Card Surface */
    --color-border: rgba(20, 20, 19, 0.15); /* Thin Light Border */
    --color-border-dark: #141413;      /* Solid Dark Ink Border */
    
    --color-primary: #526647;          /* Sage Green */
    --color-primary-light: rgba(82, 102, 71, 0.06);
    --color-secondary: #c15535;        /* Terracotta Clay Orange */
    --color-secondary-light: rgba(193, 85, 53, 0.06);
    
    --color-text-main: #141413;        /* Charcoal Black Ink */
    --color-text-muted: #6e6c64;       /* Muted Charcoal secondary text */
    
    /* Spacing & Transitions */
    --transition-smooth: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-fast: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    --rounded-sm: 0px;
    --rounded-md: 0px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    background-color: var(--color-bg-base);
    color: var(--color-text-main);
    font-family: var(--font-body);
    -webkit-font-smoothing: antialiased;
}

body {
    overflow-x: hidden;
    position: relative;
    line-height: 1.7;
    background-color: var(--color-bg-base);
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-fast);
}

/* Scroll reveal initial states */
.reveal-on-scroll {
    opacity: 0;
    transform: translateY(15px);
    transition: var(--transition-smooth);
}

.reveal-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* --------------------------------------------------------------------------
   2. Header & Navigation (Minimalist Transparent)
   -------------------------------------------------------------------------- */
#main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid var(--color-border);
    background-color: rgba(245, 244, 240, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

#main-header.is-over-hero {
    background-color: transparent;
    border-bottom-color: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    color: #ffffff;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    direction: ltr;
}

.logo-group {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.logo {
    font-family: var(--font-header);
    font-weight: 700;
    font-size: 1.3rem;
    letter-spacing: -0.01em;
    color: var(--color-text-main);
}

#main-header.is-over-hero .logo {
    color: #ffffff;
}

.logo-accent {
    color: var(--color-secondary);
    margin-right: 1px;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.language-menu {
    position: relative;
}

.language-menu-trigger {
    align-items: center;
    background-color: rgba(245, 244, 240, 0.92);
    border: 1px solid var(--color-border);
    border-radius: 0;
    color: var(--color-text-main);
    cursor: pointer;
    display: grid;
    font-family: var(--font-body);
    font-size: 0.8rem;
    font-weight: 400;
    gap: 0.55rem;
    grid-template-columns: 1.35rem minmax(0, auto) 0.65rem;
    height: 2.35rem;
    max-width: min(13rem, 48vw);
    padding: 0 0.65rem;
    text-align: left;
    transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.language-menu-trigger:hover,
.language-menu-trigger:focus-visible,
.language-menu.is-open .language-menu-trigger {
    border-color: var(--color-secondary);
}

.language-menu-trigger:focus-visible,
.language-menu-option:focus-visible {
    outline: 1px solid var(--color-secondary);
    outline-offset: 3px;
}

#main-header.is-over-hero .language-menu-trigger {
    background-color: rgba(20, 20, 19, 0.22);
    border-color: rgba(255, 255, 255, 0.45);
    color: #ffffff;
}

.language-current-flag,
.language-option-flag {
    align-items: center;
    border-radius: 50%;
    display: inline-flex;
    filter: saturate(0.78);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI Emoji', 'Apple Color Emoji', sans-serif;
    font-size: 1.08rem;
    height: 1rem;
    justify-content: center;
    line-height: 1;
    overflow: hidden;
    opacity: 0.88;
    width: 1rem;
}

.language-menu-option[aria-selected='true'] .language-option-flag {
    filter: saturate(0.95);
    opacity: 1;
}

.language-current-name {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.language-menu-chevron {
    border-bottom: 1.5px solid currentColor;
    border-right: 1.5px solid currentColor;
    height: 0.42rem;
    transform: translateY(-0.12rem) rotate(45deg);
    transition: transform 0.2s ease;
    width: 0.42rem;
}

.language-menu.is-open .language-menu-chevron {
    transform: translateY(0.12rem) rotate(225deg);
}

.language-menu-popover {
    background: var(--color-bg-base);
    border: 1px solid var(--color-border-dark);
    border-radius: 0;
    box-shadow: none;
    color: var(--color-text-main);
    inset-inline-end: 0;
    margin-top: 0.35rem;
    min-width: 14.5rem;
    overflow: hidden;
    position: absolute;
    top: 100%;
    z-index: 10;
}

.language-menu-popover[hidden] {
    display: none;
}

.language-menu-list {
    display: grid;
    max-height: min(28rem, calc(100vh - 6rem));
    overflow-y: auto;
    overscroll-behavior: contain;
    padding: 0.25rem;
    scrollbar-color: rgba(20, 20, 19, 0.3) transparent;
    scrollbar-width: thin;
}

.language-menu-option {
    align-items: center;
    background: transparent;
    border: 0;
    border-radius: 0;
    color: var(--color-text-main);
    cursor: pointer;
    display: grid;
    font-family: var(--font-body);
    font-size: 0.84rem;
    gap: 0.7rem;
    grid-template-columns: 1.45rem minmax(0, 1fr);
    min-height: 2.4rem;
    padding: 0.42rem 0.65rem;
    text-align: left;
}

.language-menu-option:hover,
.language-menu-option:focus-visible {
    background: rgba(20, 20, 19, 0.035);
}

.language-menu-option[aria-selected='true'] {
    background: transparent;
    color: var(--color-primary);
    font-weight: 600;
}

.language-menu-option > span:last-child {
    direction: auto;
    unicode-bidi: plaintext;
}

.visually-hidden {
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
    height: 1px;
    overflow: hidden;
    position: absolute;
    white-space: nowrap;
    width: 1px;
}

html[dir='rtl'] #concept .section-header,
html[dir='rtl'] #pathways .section-header,
html[dir='rtl'] #safety .section-header,
html[dir='rtl'] #advisors .section-header {
    text-align: right;
}

html[dir='rtl'] #concept .section-lead,
html[dir='rtl'] #pathways .section-lead,
html[dir='rtl'] #safety .section-lead,
html[dir='rtl'] #advisors .section-lead {
    margin-left: auto;
    margin-right: 0;
}

.sdg-badge {
    display: inline-flex;
    align-items: center;
    background-color: var(--color-primary-light);
    border: 1px solid rgba(82, 102, 71, 0.2);
    padding: 0.3rem 0.7rem;
    margin-bottom: 1.5rem;
    font-family: var(--font-mono);
}

.badge-icon {
    color: var(--color-primary);
    font-weight: 700;
    font-size: 0.7rem;
    margin-right: 0.4rem;
}

.badge-text {
    font-size: 0.7rem;
    color: var(--color-primary);
    letter-spacing: 0.01em;
}

/* --------------------------------------------------------------------------
   4. Hero Section (Full Cover Layout)
   -------------------------------------------------------------------------- */
#hero {
    min-height: 100vh;
    height: auto;
    position: relative;
    background: url('./素材/主视觉.png') no-repeat center center;
    background-size: cover;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    padding-top: 6.5rem;
    padding-bottom: 2rem;
    box-sizing: border-box;
    border-bottom: 1px solid var(--color-border);
}

#hero .hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(20, 20, 19, 0.48); /* Flat overlay for legibility */
    z-index: 1;
}

#hero .hero-container {
    max-width: 800px;
    width: 100%;
    margin: 0 auto;
    padding: 0 2rem;
    position: relative;
    z-index: 2;
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-brand-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

#hero .sdg-badge {
    background-color: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

#hero .badge-icon,
#hero .badge-text {
    color: #ffffff;
}

.hero-title {
    font-family: var(--font-header);
    font-size: clamp(2.75rem, 7vw, 4.25rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.01em;
    margin-bottom: 1rem;
    color: #ffffff;
}

.hero-subtitle {
    font-family: var(--font-header);
    font-size: clamp(1.15rem, 2.5vw, 1.5rem);
    font-weight: 400;
    line-height: 1.35;
    margin-bottom: 2rem;
    color: #f5f4f0;
}

.hero-description {
    color: #e5e4e0;
    font-size: 0.95rem;
    margin-bottom: 0;
    max-width: 650px;
    line-height: 1.8;
    opacity: 0.9;
}

.hero-partner-logos {
    position: relative;
    bottom: 0;
    left: 0;
    right: 0;
    width: 100%;
    margin-top: 1.5rem;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: flex-end;
    z-index: 2;
    padding: 0 1.5rem;
    box-sizing: border-box;
}

.hero-logo-col {
    display: flex;
    align-items: flex-end;
}

.hero-logo-left {
    justify-content: flex-end;
    padding-right: 4.5rem;
}

.hero-logo-center {
    justify-content: center;
}

.hero-logo-right {
    justify-content: flex-start;
    padding-left: 4.5rem;
}

.hero-partner-logos .footer-partner-logo {
    filter: none;
    opacity: 0.95;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.hero-partner-logos .logo-sodeslab {
    height: 19px;
    transform: translateY(-2px);
}

.hero-partner-logos .logo-desis {
    height: 19px;
    filter: brightness(0) invert(1);
}

.hero-partner-logos .logo-aigoki {
    height: 16px;
    filter: none;
}

.hero-partner-logos .footer-partner-logo:hover {
    opacity: 1;
}

/* --------------------------------------------------------------------------
   5. Sections Layout Common
   -------------------------------------------------------------------------- */
section {
    padding: 90px 0;
    position: relative;
    background-color: var(--color-bg-base);
    border-bottom: 1px solid var(--color-border);
}

#concept { background-color: #ffffff; }
#pathways { background-color: var(--color-bg-base); }
#poster { background-color: var(--color-bg-base); }
#requirements { background-color: #ffffff; }
#safety { background-color: var(--color-text-main); }
#timeline { background-color: var(--color-bg-base); }
#advisors { background-color: #ffffff; }
#apply { background-color: #ffffff; }
#submission { background-color: #ffffff; }
#venue { background-color: var(--color-bg-base); }

.section-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section-header {
    text-align: center;
    margin-bottom: 4.5rem;
}

.section-title {
    font-family: var(--font-header);
    font-size: 2.2rem;
    font-weight: 600;
    line-height: 1.25;
    margin-bottom: 0.75rem;
    color: var(--color-text-main);
}

.section-lead {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    max-width: 720px;
    margin: 0 auto;
    line-height: 1.65;
}

/* --------------------------------------------------------------------------
   6. Concept Section (Extreme Minimalist Layout)
   -------------------------------------------------------------------------- */
#concept .section-header {
    text-align: left;
}

#concept .section-lead {
    margin-left: 0;
    margin-right: auto;
}

.section-illustration {
    margin: 0;
    pointer-events: none;
}

.section-illustration img {
    display: block;
    height: auto;
    width: 100%;
}

/* --------------------------------------------------------------------------
   6.1 Participant Pathways
   -------------------------------------------------------------------------- */
.pathways-container {
    max-width: 900px;
}

#pathways .section-header {
    margin-bottom: 3rem;
    text-align: left;
}

#pathways .section-lead {
    margin-left: 0;
}

.pathway-kicker {
    color: var(--color-secondary);
    display: block;
    font-family: var(--font-mono);
    font-size: 0.68rem;
    letter-spacing: 0.08em;
    margin-bottom: 0.75rem;
    text-transform: uppercase;
}

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

.pathway-tab {
    appearance: none;
    background: transparent;
    border: 0;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text-muted);
    cursor: pointer;
    font: inherit;
    min-height: 92px;
    padding: 0 1.25rem 1.15rem;
    text-align: left;
}

.pathway-tab:first-child {
    padding-left: 0;
}

.pathway-tab:last-child {
    padding-right: 0;
}

.pathway-tab[aria-selected='true'] {
    border-bottom-color: var(--color-secondary);
    border-bottom-width: 2px;
    color: var(--color-text-main);
}

.pathway-tab:hover {
    color: var(--color-text-main);
}

.pathway-tab:focus-visible {
    background: rgba(193, 85, 53, 0.06);
    outline: none;
}

.pathway-tab-label,
.pathway-tab-note {
    display: block;
}

.pathway-tab-label {
    font-family: var(--font-header);
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.4;
}

.pathway-tab-note {
    font-size: 0.76rem;
    line-height: 1.5;
    margin-top: 0.35rem;
}

.pathway-panels {
    min-height: 250px;
}

.pathway-panel {
    padding: 2.25rem 0 0;
}

.pathway-panel[hidden] {
    display: none;
}

.pathway-panel-intro {
    align-items: center;
    display: grid;
    gap: clamp(2rem, 5vw, 4rem);
    grid-template-columns: minmax(0, 1fr) minmax(220px, 280px);
}

.pathway-summary {
    color: var(--color-text-main);
    font-family: var(--font-header);
    font-size: 1.15rem;
    line-height: 1.65;
    max-width: 620px;
}

.pathway-illustration {
    aspect-ratio: 4 / 3;
    margin: 0;
    width: 100%;
}

.pathway-illustration img {
    display: block;
    height: 100%;
    object-fit: contain;
    width: 100%;
}

.pathway-facts {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-top: 2rem;
}

.pathway-facts > div {
    min-width: 0;
    padding: 0 1.5rem;
}

.pathway-facts > div:first-child {
    padding-left: 0;
}

.pathway-facts > div + div {
    border-left: 1px solid var(--color-border);
}

.pathway-facts dt {
    color: var(--color-secondary);
    font-family: var(--font-mono);
    font-size: 0.66rem;
    letter-spacing: 0.08em;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
}

.pathway-facts dd {
    color: var(--color-text-muted);
    font-size: 0.86rem;
    line-height: 1.7;
    margin: 0;
}

.pathway-context-note {
    color: var(--color-secondary);
    font-size: 0.82rem;
    line-height: 1.65;
    margin: 1.25rem auto 0;
    max-width: 660px;
}

.pathway-context-note[hidden] {
    display: none;
}

.pathway-context-note-dark {
    color: rgba(255, 255, 255, 0.78);
}

@media (max-width: 700px) {
    .pathway-tabs {
        grid-template-columns: 1fr;
    }

    .pathway-tab,
    .pathway-tab:first-child,
    .pathway-tab:last-child {
        min-height: 0;
        padding: 1rem 0;
    }

    .pathway-tab[aria-selected='true'] {
        padding-left: 0.75rem;
    }

    .pathway-panels {
        min-height: 0;
    }

    .pathway-panel-intro {
        gap: 1.25rem;
        grid-template-columns: 1fr;
    }

    .pathway-illustration {
        max-width: 260px;
    }

    .pathway-facts {
        grid-template-columns: 1fr;
    }

    .pathway-facts > div,
    .pathway-facts > div:first-child {
        padding: 1rem 0;
    }

    .pathway-facts > div + div {
        border-left: 0;
        border-top: 1px solid var(--color-border);
    }
}

.section-illustration-wide {
    margin: -1.75rem auto 3.5rem;
    max-width: 720px;
}

/* Stats / Details Panel (Completely Flat & Minimalist) */
.about-details-box {
    background-color: transparent;
    border: none;
    padding: 0;
}

.about-text-content h3 {
    font-family: var(--font-header);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-text-main);
}

.about-text-content p {
    color: var(--color-text-muted);
    margin-bottom: 2.5rem;
    font-size: 0.95rem;
    line-height: 1.75;
}

.quick-stats {
    border-top: 1px solid var(--color-border);
    display: grid;
    gap: 2rem;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    padding-top: 2rem;
}

.stat-item {
    min-width: 0;
}

.stat-summary {
    align-items: flex-start;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    list-style: none;
    padding-left: 0.1rem;
    padding-right: 0.25rem;
}

.stat-summary::-webkit-details-marker {
    display: none;
}

.stat-summary:focus-visible {
    outline: 2px solid var(--color-secondary);
    outline-offset: 5px;
}

.stat-heading {
    align-items: flex-start;
    display: flex;
    flex-direction: column;
}

.stat-num {
    font-family: var(--font-header);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-secondary);
    line-height: 1.1;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: 0.4rem;
    text-transform: uppercase;
    letter-spacing: 0.01em;
}

.stat-toggle {
    border-bottom: 1px solid currentColor;
    border-right: 1px solid currentColor;
    color: var(--color-text-muted);
    flex: 0 0 auto;
    height: 0.45rem;
    margin-top: 0.35rem;
    transform: rotate(45deg);
    transition: transform var(--transition-fast);
    width: 0.45rem;
}

.stat-item[open] .stat-toggle {
    transform: rotate(225deg);
}

.about-text-content .stat-detail {
    color: var(--color-text-muted);
    font-size: 0.82rem;
    line-height: 1.7;
    margin: 1.25rem 0 0;
}

/* Record acquisition methods */
.record-methods-outer .section-container {
    max-width: 1080px;
}

.record-methods {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
    margin-top: 3rem;
    border: 1px solid var(--color-border);
}

.record-method-card {
    display: flex;
    gap: 1.25rem;
    padding: 2rem 1.75rem;
    align-items: flex-start;
}

.record-method-card + .record-method-card {
    border-left: 1px solid var(--color-border);
}

.method-num {
    font-family: var(--font-header);
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--color-secondary);
    line-height: 1;
    flex-shrink: 0;
    opacity: 0.25;
    letter-spacing: -0.03em;
}

.method-body {
    min-width: 0;
}

.method-illustration {
    margin: -0.75rem 0 1.25rem;
    max-width: 250px;
}

.method-illustration img {
    display: block;
    height: auto;
    width: 100%;
}

.method-title {
    font-family: var(--font-header);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text-main);
    margin-bottom: 0.6rem;
}

.method-desc {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    line-height: 1.75;
}

.method-note {
    font-size: 0.78rem;
    color: var(--color-text-muted);
    line-height: 1.6;
    margin-top: 0.5rem;
    opacity: 0.85;
}

.method-policy-note {
    color: var(--color-text-main);
    font-weight: 600;
    opacity: 1;
}

@media (max-width: 900px) {
    .record-methods {
        grid-template-columns: 1fr;
    }

    .record-method-card + .record-method-card {
        border-left: 0;
        border-top: 1px solid var(--color-border);
    }
}

/* --------------------------------------------------------------------------
   6.75 Safety Guidance
   -------------------------------------------------------------------------- */
.safety-container {
    max-width: 800px;
}

#safety .section-header {
    text-align: left;
}

#safety .section-title {
    color: #ffffff;
}

#safety .section-lead {
    color: rgba(255, 255, 255, 0.68);
    margin-left: 0;
}

.safety-kicker {
    color: #d99b82;
    display: block;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    margin-bottom: 0.65rem;
    text-transform: uppercase;
}

.safety-hazards {
    border-bottom: 1px solid rgba(255, 255, 255, 0.18);
    border-top: 1px solid rgba(255, 255, 255, 0.18);
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.safety-hazard {
    display: grid;
    gap: 0.6rem;
    grid-template-columns: 2rem minmax(0, 1fr);
    padding: 2rem 2.25rem 2rem 0;
}

.safety-hazard-illustration {
    aspect-ratio: 4 / 3;
    grid-column: 1 / -1;
    margin: -0.5rem 0 0.75rem 2rem;
    max-width: 230px;
}

.safety-hazard-illustration img {
    display: block;
    height: 100%;
    object-fit: contain;
    width: 100%;
}

.safety-hazard:nth-child(2n) {
    border-left: 1px solid rgba(255, 255, 255, 0.18);
    padding-left: 2.25rem;
}

.safety-hazard:nth-child(n + 3) {
    border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.safety-hazard-index {
    color: #d99b82;
    font-family: var(--font-mono);
    font-size: 0.68rem;
    padding-top: 0.25rem;
}

.safety-hazard h3 {
    color: #ffffff;
    font-family: var(--font-header);
    font-size: 1.15rem;
    font-weight: 600;
    line-height: 1.35;
}

.safety-hazard p {
    color: rgba(255, 255, 255, 0.66);
    font-size: 0.9rem;
    grid-column: 2;
    line-height: 1.75;
}

.safety-mandatory {
    display: grid;
    gap: 2.5rem;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-top: 2.5rem;
}

.safety-mandatory h3 {
    color: #ffffff;
    font-family: var(--font-header);
    font-size: 1.05rem;
    margin-bottom: 0.5rem;
}

.safety-mandatory p {
    color: rgba(255, 255, 255, 0.72);
    font-size: 0.9rem;
    line-height: 1.75;
}

@media (max-width: 700px) {
    .safety-hazards,
    .safety-mandatory {
        grid-template-columns: 1fr;
    }

    .safety-hazard,
    .safety-hazard:nth-child(2n) {
        border-left: 0;
        padding: 1.5rem 0;
    }

    .safety-hazard-illustration {
        margin-left: 2rem;
        max-width: 220px;
    }

    .safety-hazard:nth-child(n + 2) {
        border-top: 1px solid rgba(255, 255, 255, 0.18);
    }
}

/* --------------------------------------------------------------------------
   6.5 Requirements Section (Work Rules + SVG Illustrations)
   -------------------------------------------------------------------------- */
.req-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    border: 1px solid var(--color-border);
}

.req-card {
    display: flex;
    flex-direction: column;
    padding: 2.5rem 2rem 2rem;
    border-right: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    transition: background-color 0.3s ease;
}

.req-card:nth-child(2n) {
    border-right: none;
}

.req-card:nth-child(3),
.req-card:nth-child(4) {
    border-bottom: none;
}

.req-card:hover {
    background-color: var(--color-bg-base);
}

.req-illustration {
    aspect-ratio: 4 / 3;
    margin: -0.75rem 0 1.25rem;
    max-width: 230px;
    width: 100%;
    flex-shrink: 0;
}

.req-illustration img {
    display: block;
    height: 100%;
    object-fit: contain;
    width: 100%;
}

.req-title {
    font-family: var(--font-header);
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--color-text-main);
    margin-bottom: 0.6rem;
}

.req-desc {
    font-size: 0.88rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}

.req-desc strong {
    color: var(--color-secondary);
    font-weight: 600;
}

/* Full-width keep-safe notice */
.req-notice {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-top: 2rem;
    padding: 1.25rem 1.5rem;
    border: 1px solid rgba(193, 85, 53, 0.35);
    background-color: rgba(193, 85, 53, 0.04);
}

.req-notice-icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    color: var(--color-secondary);
    margin-top: 1px;
}

.req-notice-icon svg {
    width: 100%;
    height: 100%;
}

.req-notice-text {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    line-height: 1.7;
    margin: 0;
}

@media (max-width: 600px) {
    .req-grid {
        grid-template-columns: 1fr;
    }

    .req-card {
        border-right: none;
    }

    .req-card:nth-child(3),
    .req-card:nth-child(4) {
        border-bottom: 1px solid var(--color-border);
    }

    .req-card:last-child {
        border-bottom: none;
    }
}

#poster {
    padding: 0;
    position: relative;
    background-color: var(--color-bg-base);
    overflow-x: clip;
}

.poster-sticky-track {
    position: relative;
    height: 145vh;
}

.poster-sticky-sticky {
    position: sticky;
    top: 0;
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    overflow: visible;
    box-sizing: border-box;
    padding-top: 3.5rem;
    padding-bottom: 2rem;
}

#poster .poster-sticky-sticky .section-header {
    margin-bottom: 1.5rem;
}

.record-methods-outer {
    position: relative;
    z-index: 10;
    background-color: var(--color-bg-base);
    padding-top: 3.5rem;
    padding-bottom: 5.5rem;
    border-top: 1px solid var(--color-border);
}

#poster .record-methods {
    margin-top: 0;
}

.poster-display-container {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.poster-interactive-wrapper {
    position: relative;
    max-width: 360px;
    width: 100%;
    overflow: visible;
}

.poster-frame {
    position: relative;
    width: 100%;
    border: 1px solid rgba(20, 20, 19, 0.12);
    transition: var(--transition-smooth);
    cursor: zoom-in;
    background-color: #ffffff;
    z-index: 2; /* Render in front of vinyl */
}

/* --------------------------------------------------------------------------
   7.1 Poster Fullscreen Lightbox Modal
   -------------------------------------------------------------------------- */
.lightbox-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.3s ease;
}

.lightbox-modal.active {
    opacity: 1;
    visibility: visible;
}

.lightbox-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 15, 14, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

.lightbox-content {
    position: relative;
    z-index: 10000;
    max-width: 92vw;
    max-height: 92vh;
    display: flex;
    align-items: center;
    justify-content: center;
    transform: scale(0.94);
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.lightbox-modal.active .lightbox-content {
    transform: scale(1);
}

.lightbox-img {
    max-width: 100%;
    max-height: 88vh;
    object-fit: contain;
    border-radius: 4px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    cursor: zoom-out;
}

.poster-img {
    width: 100%;
    height: auto;
    display: block;
    position: relative;
    z-index: 2;
    transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.poster-vinyl {
    position: absolute;
    top: 8%;
    left: 8%;
    width: 84%;
    aspect-ratio: 1 / 1;
    border-radius: 50%;
    background: radial-gradient(circle, #2a2a28 20%, #151514 80%);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
    z-index: 1; /* Render behind poster frame */
    transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.8s ease;
    opacity: 0;
    transform: translate(0, 0) rotate(0deg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.vinyl-grooves {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: repeating-radial-gradient(circle, rgba(255, 255, 255, 0.03) 0px, rgba(255, 255, 255, 0.03) 1px, transparent 2px, transparent 4px),
                linear-gradient(45deg, transparent 40%, rgba(255, 255, 255, 0.04) 50%, transparent 60%),
                linear-gradient(-45deg, transparent 40%, rgba(255, 255, 255, 0.04) 50%, transparent 60%);
    pointer-events: none;
}

.vinyl-label {
    width: 32%;
    height: 32%;
    border-radius: 50%;
    background-color: var(--color-secondary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--color-bg-base);
    font-family: var(--font-mono);
    font-size: 0.45rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    pointer-events: none;
    box-shadow: inset 0 0 5px rgba(0,0,0,0.3);
    border: 1px solid rgba(255, 255, 255, 0.15);
    text-align: center;
    line-height: 1.2;
}

.vinyl-label::before {
    content: '';
    width: 16%;
    height: 16%;
    border-radius: 50%;
    background-color: var(--color-bg-base);
    margin-bottom: 3px;
}

.poster-note {
    margin-top: 2rem;
    font-size: 0.8rem;
    color: var(--color-text-muted);
    text-align: center;
    line-height: 1.6;
    max-width: 480px;
}

/* Hover States (Sleek and Elegant) */
.poster-interactive-wrapper:hover .poster-frame {
    transform: translateX(-22%);
}

.poster-interactive-wrapper:hover .poster-vinyl {
    transform: translateX(48%) rotate(180deg);
    opacity: 1;
}

.apply-date-highlight {
    display: inline;
    font-family: var(--font-header);
    font-size: 1.45rem;
    font-weight: 600;
    color: var(--color-secondary);
    letter-spacing: -0.01em;
    line-height: 1.4;
}

/* --------------------------------------------------------------------------
   7.6 Final Submission Entry
   -------------------------------------------------------------------------- */
.submission-period {
    border-bottom: 1px solid var(--color-border);
    padding: 0 2.25rem 1.75rem;
}

.submission-period h3 {
    color: var(--color-text-main);
    font-family: var(--font-header);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.45rem;
}

.submission-period p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
}

.submission-routes {
    display: block;
}

.submission-route {
    display: block;
    padding: 2rem 2.25rem;
}

.submission-route[hidden] {
    display: none;
}

.submission-route > div {
    align-items: center;
    display: grid;
    gap: 2rem;
    grid-template-columns: minmax(180px, 240px) minmax(0, 1fr);
}

.submission-route > div > .submission-illustration {
    grid-row: 1 / span 4;
}

.submission-route h3 {
    color: var(--color-text-main);
    font-family: var(--font-header);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.65rem;
}

.submission-illustration {
    aspect-ratio: 4 / 3;
    margin: 0;
    max-width: 240px;
}

.submission-illustration img {
    display: block;
    height: 100%;
    object-fit: contain;
    width: 100%;
}

.submission-route p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
}

.submission-route .submission-requirements {
    color: var(--color-text-main);
    margin-top: 0.9rem;
}

.submission-requirements strong {
    color: var(--color-primary);
    font-weight: 600;
}

.submission-actions {
    align-items: center;
    border-top: 1px solid var(--color-border);
    display: flex;
    gap: 1.5rem;
    justify-content: space-between;
    padding: 1.25rem 2.25rem;
}

.submission-status {
    align-items: baseline;
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.submission-status-label {
    color: var(--color-text-muted);
    font-family: var(--font-mono);
    font-size: 0.68rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.submission-status-value {
    color: var(--color-secondary);
    font-family: var(--font-header);
    font-size: 1.05rem;
}

.submission-links {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: flex-end;
}

.submission-cta,
.submission-fallback {
    border-bottom: 1px solid currentColor;
    color: var(--color-secondary);
    cursor: pointer;
    font-family: var(--font-body);
    font-size: 0.9rem;
    line-height: 1.4;
    padding-bottom: 0.15rem;
    text-decoration: none;
}

.submission-cta.is-disabled {
    color: var(--color-text-muted);
    cursor: not-allowed;
    opacity: 0.65;
}

.submission-cta:not(.is-disabled):hover,
.submission-fallback:hover {
    color: var(--color-text-main);
}

.submission-cta:focus-visible,
.submission-fallback:focus-visible {
    outline: 2px solid var(--color-secondary);
    outline-offset: 4px;
}

@media (max-width: 768px) {
    .submission-route {
        padding: 1.5rem;
    }

    .submission-route > div {
        display: block;
    }

    .submission-period {
        padding: 0 1.5rem 1.5rem;
    }

    .submission-illustration {
        margin-bottom: 1rem;
        max-width: 230px;
    }

    .submission-actions {
        align-items: flex-start;
        flex-direction: column;
        padding: 1.25rem 1.5rem;
    }

    .submission-links {
        justify-content: flex-start;
    }
}

/* --------------------------------------------------------------------------
   8. Timeline Section (Minimalist Line & Text)
   -------------------------------------------------------------------------- */
.timeline-wrapper {
    position: relative;
    max-width: 700px;
    margin: 0 auto;
    padding: 1rem 0;
}

.timeline-illustration {
    aspect-ratio: 4 / 3;
    margin: 0;
    width: 220px;
}

.timeline-illustration img {
    display: block;
    height: 100%;
    object-fit: contain;
    width: 100%;
}

.timeline-line {
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 1px;
    background-color: var(--color-border);
}

.timeline-item {
    position: relative;
    padding-left: 55px;
    margin-bottom: 3.5rem;
    opacity: 0.35;
    transform: translateY(10px);
    transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.timeline-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-optional {
    margin: -0.5rem 0 3.5rem 5.5rem;
    position: relative;
}

.timeline-optional-content {
    align-items: center;
    display: grid;
    gap: 2rem;
    grid-template-columns: minmax(0, 1fr) 220px;
}

.timeline-optional::before {
    border-top: 1px dashed rgba(82, 102, 71, 0.5);
    content: '';
    left: -3.95rem;
    position: absolute;
    top: 1rem;
    width: 3.2rem;
}

.timeline-optional-marker {
    background: var(--color-bg-base);
    border: 1px solid var(--color-primary);
    height: 11px;
    left: -4.35rem;
    position: absolute;
    top: 0.68rem;
    transform: rotate(45deg);
    width: 11px;
    z-index: 5;
}

.timeline-optional-badge {
    border: 1px solid rgba(82, 102, 71, 0.45);
    color: var(--color-primary);
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    line-height: 1.4;
    margin-bottom: 0.65rem;
    margin-right: 0.75rem;
    padding: 0.2rem 0.45rem;
    text-transform: uppercase;
}

.timeline-optional-content h3 {
    color: var(--color-text-main);
    font-family: var(--font-header);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.35rem;
}

.timeline-optional-content p {
    color: var(--color-text-muted);
    font-size: 0.86rem;
    line-height: 1.65;
}

/* Hide the timeline line below the last item */
.timeline-item-last::after {
    content: '';
    position: absolute;
    left: 20px;
    top: 16px; /* just below the marker center */
    bottom: -3.5rem; /* cover the gap to the next section */
    width: 1px;
    background-color: var(--color-bg-base);
    z-index: 4;
}

@media (max-width: 768px) {
    .timeline-item-last::after {
        left: 10px;
    }
}

.timeline-marker {
    position: absolute;
    left: 10px;
    top: 5px;
    width: 21px;
    height: 21px;
    border-radius: 50%;
    background-color: var(--color-bg-base);
    border: 1px solid rgba(20, 20, 19, 0.2);
    color: var(--color-text-muted);
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    z-index: 5;
    transition: var(--transition-smooth);
}

.timeline-item.visible .timeline-marker {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: #ffffff;
}

.timeline-content-card {
    align-items: center;
    background-color: transparent;
    border: none;
    display: grid;
    gap: 2rem;
    grid-template-columns: minmax(0, 1fr) 220px;
    padding: 0;
    transition: none;
}

.timeline-copy {
    min-width: 0;
}

.timeline-date {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
    letter-spacing: 0.02em;
}

.timeline-content-card h3 {
    font-family: var(--font-header);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
    color: var(--color-text-main);
}

.timeline-content-card p {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    line-height: 1.65;
}

/* --------------------------------------------------------------------------
   8.25 Faculty Advisors
   -------------------------------------------------------------------------- */
.advisors-container {
    max-width: 900px;
}

#advisors .section-header {
    margin-bottom: 3rem;
    text-align: left;
}

#advisors .section-lead {
    margin-left: 0;
}

.advisor-profile {
    align-items: start;
    display: grid;
    gap: clamp(1.75rem, 4vw, 3rem);
    grid-template-columns: minmax(190px, 240px) minmax(0, 1fr);
    padding: 2.25rem 0;
}

.advisor-profile + .advisor-profile {
    border-top: 1px solid var(--color-border);
}

.advisor-portrait {
    aspect-ratio: 4 / 3;
    background: var(--color-bg-base);
    border-radius: 52% 48% 45% 55% / 46% 54% 48% 52%;
    overflow: hidden;
}

.advisor-profile:nth-child(2) .advisor-portrait {
    border-radius: 46% 54% 52% 48% / 55% 45% 53% 47%;
}

.advisor-portrait img {
    display: block;
    height: 100%;
    object-fit: cover;
    width: 100%;
}

.advisor-details {
    min-width: 0;
}

.advisor-details h3 {
    color: var(--color-text-main);
    font-family: var(--font-header);
    font-size: 1.35rem;
    font-weight: 600;
    line-height: 1.35;
    margin: 0 0 0.3rem;
    overflow-wrap: anywhere;
}

.advisor-name-link {
    color: inherit;
}

.advisor-name-link:hover,
.advisor-name-link:focus-visible {
    color: var(--color-secondary);
}

.advisor-name-link:focus-visible {
    outline: 1px solid var(--color-secondary);
    outline-offset: 4px;
}

.advisor-role {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    line-height: 1.5;
}

.advisor-bio {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    line-height: 1.65;
    margin-top: 1rem;
    max-width: 34rem;
}

@media (max-width: 650px) {
    .advisor-profile {
        gap: 1.5rem;
        grid-template-columns: 1fr;
        padding: 2rem 0;
    }

    .advisor-portrait {
        max-width: 24rem;
    }
}

/* --------------------------------------------------------------------------
   8.5 Venue Section (Map + Transit Info)
   -------------------------------------------------------------------------- */
.venue-wide {
    max-width: 1000px;
}

.venue-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3.5rem;
    align-items: stretch;
}

.venue-map-wrapper {
    height: 420px;
    border: 1px solid var(--color-border);
    min-width: 0;
    overflow: hidden;
    position: relative;
}

.venue-map-wrapper iframe {
    display: block;
    width: 100%;
    height: 100%;
}

.venue-info {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
    min-width: 0;
}

.venue-label {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-primary);
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
}

.venue-address-block p {
    font-size: 0.92rem;
    color: var(--color-text-muted);
    line-height: 1.8;
}

.venue-transit-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1.4rem;
}

.venue-transit-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

/* Two entries side-by-side in one row */
.venue-transit-combined {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    border: 1px solid var(--color-border);
    padding: 0;
    align-items: stretch;
}

.transit-sub {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.85rem 1rem;
}

.venue-transit-combined .transit-sub:first-child {
    border-right: 1px solid var(--color-border);
}

.transit-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: 0.6rem;
    font-weight: 700;
    min-width: 38px;
    height: 22px;
    padding: 0 0.4rem;
    flex-shrink: 0;
    letter-spacing: 0.02em;
}

.transit-subway {
    background-color: var(--color-primary);
    color: #ffffff;
}

.transit-bus {
    background-color: var(--color-secondary);
    color: #ffffff;
}

.transit-jr {
    background-color: #1a3a5c;
    color: #ffffff;
}

.transit-nishitetsu {
    background-color: #8b1a2f;
    color: #ffffff;
}

.transit-note {
    background-color: transparent;
    border: 1px solid var(--color-border-dark);
    color: var(--color-text-muted);
}

.venue-transit-item strong {
    display: block;
    font-family: var(--font-header);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text-main);
    margin-bottom: 0.2rem;
}

.venue-transit-item p {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    line-height: 1.55;
}

@media (max-width: 768px) {
    .venue-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .venue-map-wrapper {
        height: 300px;
    }
}

/* --------------------------------------------------------------------------
   9. Footer
   -------------------------------------------------------------------------- */
#main-footer {
    border-top: 1px solid var(--color-border);
    background-color: var(--color-bg-base);
    color: var(--color-text-main);
    padding: 4.5rem 0 3rem 0;
}
 
.footer-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 2rem;
}
 
.footer-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    margin-bottom: 3rem;
}
 
.footer-info h3 {
    font-family: var(--font-header);
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--color-text-main);
}
 
.footer-info p {
    color: var(--color-text-muted);
    font-size: 0.85rem;
    max-width: 500px;
    margin-bottom: 1.75rem;
    line-height: 1.6;
}

.footer-contact {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.4rem;
    margin-bottom: 2rem;
    padding: 1.25rem 2rem;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    width: 100%;
    max-width: 480px;
}

.footer-contact-label {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
}

.footer-contact-email {
    font-family: var(--font-header);
    font-size: 1.15rem;
    font-weight: 500;
    color: var(--color-secondary);
    border-bottom: 1px solid rgba(193, 85, 53, 0.3);
    padding-bottom: 1px;
    transition: var(--transition-fast);
    letter-spacing: -0.01em;
}

.footer-contact-email:hover {
    border-bottom-color: var(--color-secondary);
    opacity: 0.8;
}

.footer-partner-logos {
    display: flex;
    align-items: flex-end;
    gap: 2rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 1.5rem;
}
 
.footer-partner-logo {
    width: auto;
    object-fit: contain;
    opacity: 0.9;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.footer-partner-logo.logo-sodeslab {
    height: 46px;
}

.footer-partner-logo.logo-desis {
    height: 44px;
}

.footer-partner-logo.logo-aigoki {
    height: 38px;
}

.footer-partner-logo:hover {
    opacity: 1;
    transform: translateY(-2px);
}
 
.footer-bottom {
    border-top: 1px solid var(--color-border);
    padding-top: 1.75rem;
    text-align: center;
}
 
.footer-bottom p {
    font-size: 0.7rem;
    color: var(--color-text-muted);
    opacity: 0.7;
}

/* --------------------------------------------------------------------------
   10. Responsive Styles (Media Queries)
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 3.5rem;
    }
}

@media (max-width: 768px) {
    html {
        font-size: 15px;
    }

    .hero-container {
        padding: 0 1.5rem;
    }

    .section-title {
        font-size: 1.85rem;
    }

    .timeline-line {
        left: 10px;
    }

    .timeline-item {
        padding-left: 40px;
        margin-bottom: 2.5rem;
    }

    .timeline-content-card,
    .timeline-optional-content {
        align-items: start;
        gap: 0;
        grid-template-columns: 1fr;
    }

    .timeline-illustration {
        margin-top: 1rem;
        width: min(220px, 100%);
    }

    .timeline-optional {
        margin: -0.25rem 0 2.5rem 2.5rem;
    }

    .timeline-optional::before {
        left: -2rem;
        width: 1.4rem;
    }

    .timeline-optional-marker {
        left: -2.4rem;
    }

    .timeline-marker {
        left: 0px;
    }

    .footer-partner-logos {
        margin-top: 0.75rem;
    }

    #hero {
        height: 100vh !important;
        height: 100dvh !important;
        min-height: 100vh !important;
        min-height: 100dvh !important;
        max-height: 100vh !important;
        max-height: 100dvh !important;
        overflow: hidden !important;
        display: flex !important;
        flex-direction: column !important;
        justify-content: space-between !important;
        align-items: center !important;
        padding-top: 3.8rem !important;
        padding-bottom: 1.25rem !important;
        box-sizing: border-box !important;
        position: relative !important;
    }

    .hero-container {
        width: 100% !important;
        max-width: 100% !important;
        flex: 1 !important;
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
        padding: 0 1.25rem !important;
        box-sizing: border-box !important;
    }

    .hero-brand-card {
        width: 100% !important;
        max-width: 100% !important;
        display: flex !important;
        flex-direction: column !important;
        align-items: center !important;
        text-align: center !important;
    }

    .sdg-badge {
        margin-bottom: 0.5rem !important;
    }

    .hero-title {
        font-size: clamp(1.85rem, 6vw, 2.25rem) !important;
        margin-bottom: 0.35rem !important;
    }

    .hero-subtitle {
        font-size: clamp(0.9rem, 2.7vw, 1.05rem) !important;
        margin-bottom: 0.75rem !important;
    }

    .hero-description {
        font-size: 0.82rem !important;
        line-height: 1.55 !important;
    }

    .hero-partner-logos {
        position: relative !important;
        bottom: auto !important;
        left: auto !important;
        right: auto !important;
        width: 100% !important;
        margin-top: 0.5rem !important;
        display: flex !important;
        flex-direction: column !important;
        align-items: center !important;
        justify-content: center !important;
        gap: 0.85rem !important;
        padding: 0 1rem !important;
        grid-template-columns: none !important;
        flex-shrink: 0 !important;
    }

    .hero-logo-col {
        display: flex !important;
        justify-content: center !important;
        align-items: center !important;
        padding-left: 0 !important;
        padding-right: 0 !important;
        width: 100% !important;
    }

    .hero-logo-center {
        order: 1 !important;
    }

    .hero-logo-left {
        order: 2 !important;
    }

    .hero-logo-right {
        order: 3 !important;
    }

    .hero-partner-logos .logo-sodeslab {
        height: 24px !important;
        transform: none !important;
    }

    .hero-partner-logos .logo-desis {
        height: 24px !important;
        filter: brightness(0) invert(1) !important;
    }

    .hero-partner-logos .logo-aigoki {
        height: 20px !important;
        filter: none !important;
    }

    .apply-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .poster-interactive-wrapper {
        max-width: 280px !important;
    }

    .record-methods-outer {
        padding-top: 2.5rem !important;
        padding-bottom: 4rem !important;
    }
}

@media (max-width: 480px) {
    .header-container {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .logo {
        font-size: 1.05rem;
    }

    .language-menu-trigger {
        max-width: 50vw;
    }

    .language-menu-popover {
        max-width: calc(100vw - 2rem);
        min-width: min(14.5rem, calc(100vw - 2rem));
    }

    .venue-transit-combined {
        grid-template-columns: 1fr;
    }

    .venue-transit-combined .transit-sub:first-child {
        border-bottom: 1px solid var(--color-border);
        border-right: 0;
    }

    .transit-sub {
        min-width: 0;
        padding-left: 0.75rem;
        padding-right: 0.75rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .quick-stats {
        gap: 0;
        grid-template-columns: 1fr;
    }

    .stat-item {
        border-bottom: 1px solid var(--color-border);
        padding: 1.25rem 0;
    }

    .stat-item:first-child {
        padding-top: 0;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    .reveal-on-scroll,
    .reveal-on-scroll.visible,
    .timeline-item,
    .timeline-item.visible {
        opacity: 1;
        transform: none;
        transition: none;
    }

    .poster-frame,
    .poster-img,
    .poster-vinyl,
    .lightbox-modal,
    .lightbox-content {
        transition: none;
    }

    .poster-vinyl {
        opacity: 1;
        transform: translateX(0) rotate(0deg);
    }

    .poster-interactive-wrapper:hover .poster-frame,
    .poster-interactive-wrapper:hover .poster-vinyl {
        transform: none;
    }
}