/* ==========================================================================
   3D Wheat Field Journey Timeline Section
   ========================================================================== */

.journey-section {
    position: relative;
    width: 100vw;
    max-width: 100vw;
    margin-left: calc(50% - 50vw);
    margin-right: calc(50% - 50vw);
    height: 480vh; /* Long scroll path for 3D camera travel (scaled for more nodes) */
    background: #050505;
    overflow: visible; /* Let sticky work */
}

.journey-sticky-container {
    position: relative;
    width: 100%;
    height: 100%;
}

.journey-sticky-viewport {
    position: sticky;
    top: 0;
    width: 100%;
    height: 100vh;
    overflow: hidden;
    background: radial-gradient(circle at 50% 30%, #0d1612 0%, #050505 85%);
    display: flex;
    align-items: center;
    justify-content: center;
}

#journey-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    display: block;
    pointer-events: none;
}

#journey-labels {
    position: absolute;
    inset: 0;
    z-index: 3;
    pointer-events: none;
}

/* Floating Project Label Styles (Clean, no boxes, no cards) */
.journey-label {
    position: absolute;
    left: 0;
    top: 0;
    pointer-events: auto;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    color: #ffffff;
    opacity: 0;
    transform: translate(-10px, 15px) scale(0.95);
    transition: opacity 500ms cubic-bezier(0.16, 1, 0.3, 1), transform 500ms cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 10;
    will-change: transform, opacity;
}

.journey-label.is-visible {
    opacity: 1;
    transform: translate(15px, -35px) scale(1);
}

.journey-label .label-lead-line {
    width: 25px;
    height: 1px;
    background: linear-gradient(90deg, #4ea57f, rgba(232, 221, 207, 0));
    position: absolute;
    left: -30px;
    top: 14px;
    transform-origin: left center;
    transform: scaleX(0);
    transition: transform 500ms cubic-bezier(0.16, 1, 0.3, 1) 100ms;
}

.journey-label.is-visible .label-lead-line {
    transform: scaleX(1);
}

.journey-label .label-date {
    font-family: var(--font-ui), sans-serif;
    font-size: 0.55rem;
    font-weight: 500;
    letter-spacing: 0.18em;
    color: #4ea57f; /* Matte Green */
    margin-bottom: 2px;
    text-shadow: 0 1px 3px rgba(0,0,0,0.8);
}

.journey-label h3 {
    font-family: var(--font-serif);
    font-size: clamp(0.78rem, 1.05vw, 0.98rem);
    font-weight: 400;
    letter-spacing: 0.04em;
    margin: 0 0 3px;
    color: #ffffff;
    text-shadow: 0 2px 4px rgba(0,0,0,0.95);
    white-space: nowrap;
}

.journey-label.is-minor-node h3 {
    font-family: var(--font-ui), sans-serif;
    font-size: clamp(0.7rem, 0.9vw, 0.82rem);
    color: rgba(232, 221, 207, 0.35);
}

.journey-label.is-minor-node .label-date {
    color: rgba(78, 165, 127, 0.45);
}

.journey-label .label-tag {
    font-family: var(--font-ui), sans-serif;
    font-size: 0.52rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: #e8ddcf; /* Champagne */
    text-shadow: 0 1px 3px rgba(0,0,0,0.8);
    white-space: nowrap;
    
    /* Default state: collapsed */
    opacity: 0;
    transform: translateY(5px);
    max-height: 0;
    margin: 0;
    padding: 0;
    pointer-events: none;
    overflow: hidden;
    transition: opacity 400ms cubic-bezier(0.16, 1, 0.3, 1), transform 400ms cubic-bezier(0.16, 1, 0.3, 1), max-height 400ms cubic-bezier(0.16, 1, 0.3, 1), margin 400ms cubic-bezier(0.16, 1, 0.3, 1);
}

.journey-label .label-desc {
    font-family: var(--font-ui), sans-serif;
    font-size: 0.65rem;
    line-height: 1.6;
    letter-spacing: 0.018em;
    color: rgba(232, 221, 207, 0.48);
    max-width: 210px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.95);
    white-space: normal;
    
    /* Default state: collapsed */
    opacity: 0;
    transform: translateY(5px);
    max-height: 0;
    margin: 0;
    padding: 0;
    pointer-events: none;
    overflow: hidden;
    transition: opacity 400ms cubic-bezier(0.16, 1, 0.3, 1), transform 400ms cubic-bezier(0.16, 1, 0.3, 1), max-height 400ms cubic-bezier(0.16, 1, 0.3, 1), margin 400ms cubic-bezier(0.16, 1, 0.3, 1);
}

/* Expanded state: active only when visible AND not distant */
.journey-label.is-visible:not(.is-distant) .label-tag {
    opacity: 0.72;
    transform: translateY(0);
    max-height: 50px;
    margin-bottom: 5px;
    pointer-events: auto;
}

.journey-label.is-visible:not(.is-distant) .label-desc {
    opacity: 0.48;
    transform: translateY(0);
    max-height: 250px;
    margin: 0;
    pointer-events: auto;
}

/* Editorial header overlay */
.journey-header {
    position: absolute;
    top: 3.5rem;
    left: 3.5rem;
    max-width: 25rem;
    z-index: 5;
    pointer-events: none;
}

.journey-kicker {
    display: inline-block;
    font-family: var(--font-ui), sans-serif;
    font-size: var(--fs-body-xs);
    font-weight: 500;
    color: #4ea57f;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    margin-bottom: 0.6rem;
}

.journey-title {
    font-family: var(--font-serif);
    font-size: clamp(1.6rem, 2.5vw, 2.2rem);
    font-weight: 400;
    color: var(--text);
    letter-spacing: 0.08em;
    margin: 0 0 1rem;
}

.journey-intro {
    font-family: var(--font-ui), sans-serif;
    font-size: var(--fs-body-sm);
    line-height: 1.8;
    letter-spacing: 0.03em;
    color: var(--text-soft);
    margin: 0;
}

/* Tech UI HUD overlay */
.journey-ui-overlay {
    position: absolute;
    bottom: 3.5rem;
    left: 3.5rem;
    right: 3.5rem;
    z-index: 5;
    pointer-events: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-ui), monospace;
    font-size: 0.58rem;
    letter-spacing: 0.18em;
    color: rgba(232, 221, 207, 0.22);
}

.journey-ui-overlay .ui-status {
    color: rgba(78, 165, 127, 0.5);
}

.journey-ui-overlay .ui-progress-bar {
    position: absolute;
    bottom: -1rem;
    left: 0;
    width: 100%;
    height: 1px;
    background: rgba(232, 221, 207, 0.06);
}

.journey-ui-overlay .ui-progress-fill {
    width: 0%;
    height: 100%;
    background: #4ea57f;
    transition: width 80ms ease;
    box-shadow: 0 0 8px rgba(78, 165, 127, 0.6);
}

.journey-bg-photo {
    position: absolute;
    inset: 0;
    background-image: url("assets/images/wheat_field.webp");
    background-size: cover;
    background-position: center center;
    opacity: 0.08;
    transform: scale(1.08);
    filter: blur(8px);
    pointer-events: none;
    z-index: 0;
    will-change: opacity, transform, filter;
    transition: opacity 160ms ease-out, transform 160ms ease-out, filter 160ms ease-out;
}

.journey-bg-photo::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg,
        #050505 0%,
        rgba(5, 5, 5, 0.6) 15%,
        rgba(5, 5, 5, 0) 50%,
        rgba(5, 5, 5, 0.6) 85%,
        #050505 100%);
    opacity: 1;
    transition: opacity 800ms cubic-bezier(0.25, 1, 0.5, 1);
    z-index: 1;
}

.journey-sticky-viewport.show-epilogue .journey-bg-photo::after {
    opacity: 0.15; /* Reveal the full landscape while keeping a very soft contrast edge */
}

#journey-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2; /* Put canvas on top of background and vignette overlay */
    display: block;
    pointer-events: none;
}

#journey-labels {
    transition: opacity 500ms ease;
}

.journey-sticky-viewport.show-epilogue #journey-labels {
    opacity: 0;
}

.journey-header {
    transition: opacity 500ms ease, transform 500ms ease;
}

.journey-sticky-viewport.show-epilogue .journey-header {
    opacity: 0;
    transform: translateY(-12px);
}

.journey-ui-overlay {
    transition: opacity 500ms ease, transform 500ms ease;
}

.journey-sticky-viewport.show-epilogue .journey-ui-overlay {
    opacity: 0;
    transform: translateY(12px);
}

.journey-epilogue {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    opacity: 0;
    transform: translateY(24px) scale(0.98);
    pointer-events: none;
    /* Delayed entrance to appear exactly as the bloom clears */
    transition: opacity 1000ms cubic-bezier(0.25, 1, 0.5, 1) 450ms, 
                transform 1000ms cubic-bezier(0.25, 1, 0.5, 1) 450ms;
    text-align: center;
    padding: 0 1.5rem;
}

.journey-sticky-viewport.show-epilogue .journey-epilogue {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
}

.epilogue-content {
    max-width: 60rem;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    height: 100%;
    justify-content: center;
}

.epilogue-quote {
    margin: 0 auto 0;
    max-width: 48rem;
    font-family: var(--font-ui), sans-serif;
    font-size: clamp(0.95rem, 1.25vw, 1.15rem);
    line-height: 2.0;
    letter-spacing: 0.04em;
    color: rgba(232, 221, 207, 0.95);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.85);
    transform: translateY(-3rem); /* nudge quote slightly higher */
}

/* 简单而高级的指引 */
.epilogue-guide {
    position: absolute;
    bottom: 11.5rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    pointer-events: none;
    z-index: 5;
}

.epilogue-guide-text {
    font-family: var(--font-ui), sans-serif;
    font-size: 0.55rem;
    font-weight: 500;
    letter-spacing: 0.35em;
    color: rgba(232, 221, 207, 0.38);
    text-transform: uppercase;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.6);
}

.epilogue-guide .guide-line {
    width: 1px;
    height: 35px;
    background: linear-gradient(180deg, rgba(78, 165, 127, 0.45), rgba(78, 165, 127, 0));
    animation: guideLinePulse 2s ease-in-out infinite;
}

@keyframes guideLinePulse {
    0%, 100% { height: 20px; opacity: 0.4; }
    50% { height: 35px; opacity: 0.95; }
}

.epilogue-links {
    position: absolute;
    bottom: 4.2rem;
    left: 6vw;
    right: 6vw;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    width: auto;
    max-width: none;
}

.closing-link {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
    text-decoration: none;
    transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.4s ease;
    cursor: pointer;
}

.closing-link:hover {
    transform: translateY(-4px);
}

.link-header {
    display: flex;
    align-items: center;
    margin-bottom: 0.55rem;
    color: rgba(232, 221, 207, 0.42);
    font-family: var(--font-ui), sans-serif;
    font-size: 0.6rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    transition: color 0.35s ease;
}

.link-num {
    font-weight: 500;
}

.link-sep {
    display: inline-block;
    width: 1px;
    height: 7px;
    background: rgba(232, 221, 207, 0.2);
    margin: 0 0.5rem;
    transition: background-color 0.35s ease;
}

.link-en {
    font-weight: 400;
}

.closing-link .link-cn {
    font-family: "Noto Serif SC", "SimSun", "STSong", serif;
    font-size: 0.88rem;
    font-weight: 400;
    letter-spacing: 0.35em;
    color: #ffffff;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.25);
    transition: color 0.4s cubic-bezier(0.16, 1, 0.3, 1), text-shadow 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.closing-link:hover .link-header {
    color: var(--accent);
}

.closing-link:hover .link-sep {
    background-color: var(--accent);
}

.closing-link:hover .link-cn {
    color: #ffffff;
    text-shadow: 0 0 18px rgba(255, 255, 255, 0.45);
}



@media (max-width: 1100px) {
    

    

    

    

    

    

    
}

@media (max-width: 768px) {
    .journey-epilogue {
        padding: 6rem 1.5rem 4rem;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
    }

    .epilogue-content {
        position: relative;
        height: auto;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
    }

    .epilogue-quote {
        margin: 0 auto 2.5rem;
        font-size: 0.92rem;
        line-height: 1.8;
        transform: none;
    }

    .epilogue-guide {
        position: relative;
        bottom: auto;
        left: auto;
        transform: none;
        margin-bottom: 2rem;
    }

    .epilogue-links {
        position: relative;
        bottom: auto;
        left: auto;
        right: auto;
        display: flex;
        flex-direction: column;
        gap: 1.5rem;
        align-items: center;
        width: 100%;
    }

    .closing-link {
        align-items: center;
        text-align: center;
    }
}