/* 3D WebGL Backdrop */
#skull-canvas {
    position: fixed;
    inset: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 1;
}

.atelier-layer {
    position: relative;
    z-index: 10;
}

.container {
    width: 100%;
    max-width: 1320px;
    margin: 0 auto;
    padding: 0 32px;
}

/* Pinned Header */
.pinned-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-h);
    background: rgba(244, 242, 236, 0.88);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--rule-hairline);
    z-index: 900;
}

.header-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    gap: 20px;
}

.header-brand-wrap {
    display: flex;
    align-items: center;
    gap: 14px;
    min-width: 0;
}

.nav-cluster {
    display: flex;
    align-items: center;
    gap: 28px;
    list-style: none;
}

.nav-cluster a {
    position: relative;
    text-decoration: none;
    color: var(--ink-slate);
    font-size: 0.82rem;
    font-weight: 500;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    padding: 4px 0;
    transition: color 0.25s;
}

.nav-cluster a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 1px;
    background: var(--signal-orange);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.35s var(--ease-luxury);
}

.nav-cluster a:hover {
    color: var(--ink-obsidian);
}

.nav-cluster a:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

/* Block 1: Hero */
.stage-hero {
    min-height: calc(100vh - var(--header-h));
    min-height: calc(100svh - var(--header-h));
    display: flex;
    flex-direction: column;
    padding: 72px 0 56px;
    border-bottom: 1px solid var(--rule-hairline);
}

.stage-hero > .container {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.hero-top {
    max-width: 920px;
}

.poster-headline {
    font-family: var(--font-display);
    font-size: clamp(1.48rem, 6.2vw, 4.1rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.025em;
    color: var(--ink-obsidian);
    margin-bottom: 24px;
    overflow-wrap: break-word;
}

.poster-headline .accent-word {
    color: var(--signal-orange);
}

.hero-footer-split {
    display: grid;
    grid-template-columns: 560px 1fr;
    gap: 40px;
    align-items: end;
    padding-top: 28px;
    border-top: 1px solid var(--rule-hairline);
}

.hero-manifesto {
    font-size: 1.04rem;
    color: var(--ink-slate);
    line-height: 1.65;
    background: var(--bg-vellum);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    padding: 18px 22px;
    border-left: 3px solid var(--signal-orange);
}

.hero-actions {
    display: flex;
    justify-content: flex-end;
    align-items: center;
}

/* Content Stages */
.minimal-stage {
    padding: 88px 0;
    border-bottom: 1px solid var(--rule-hairline);
}

.stage-heading-wrap {
    margin-bottom: 44px;
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 24px;
    padding-bottom: 18px;
    border-bottom: 1px solid var(--rule-hairline);
}

.stage-poster-title {
    font-family: var(--font-display);
    font-size: clamp(1.42rem, 5.4vw, 2.8rem);
    font-weight: 700;
    line-height: 1.08;
    letter-spacing: -0.02em;
    color: var(--ink-obsidian);
    overflow-wrap: break-word;
}

/* Kinetic Entrance Reveals */
.reveal-item {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.8s var(--ease-luxury), transform 0.8s var(--ease-luxury);
}

.reveal-item.in-view {
    opacity: 1;
    transform: translateY(0);
}

.hero-entrance {
    animation: heroSlideUp 0.9s var(--ease-luxury) both;
}

.hero-entrance-delay {
    animation: heroSlideUp 0.9s 0.14s var(--ease-luxury) both;
}

@keyframes heroSlideUp {
    from {
        opacity: 0;
        transform: translateY(34px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Block 5: Monolith Footer */
.monolith-footer {
    padding: 42px 0 max(42px, env(safe-area-inset-bottom));
    background: rgba(250, 249, 245, 0.94);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

@media (max-width: 1220px) {
    .brand-descriptor { display: none; }
}

@media (max-width: 980px) {
    .nav-cluster { display: none; }
    .hero-footer-split { grid-template-columns: 1fr; gap: 22px; padding-top: 22px; }
    .hero-actions { justify-content: flex-start; }
}

@media (max-width: 900px) {
    .pinned-header,
    .hero-manifesto,
    .case-card,
    .formats-grid,
    .formats-guarantee-bar,
    .stack-group,
    .process-list,
    .cta-stage,
    .monolith-footer {
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
        background: rgba(250, 249, 245, 0.95);
    }
    .pinned-header {
        background: rgba(244, 242, 236, 0.97);
    }
}

@media (max-width: 600px) {
    .container { padding: 0 max(16px, env(safe-area-inset-left)); }
    .stage-hero { padding: 32px 0 32px; }
    .poster-headline { margin-bottom: 18px; }
    .hero-manifesto { padding: 14px 16px; font-size: 0.94rem; line-height: 1.55; }
    .minimal-stage { padding: 54px 0; }
    .stage-heading-wrap { margin-bottom: 28px; padding-bottom: 14px; }
}

@media (max-width: 520px) {
    .hero-actions,
    .hero-actions .btn-ink {
        width: 100%;
    }
    .hero-actions .btn-ink {
        justify-content: space-between;
        padding: 16px 20px;
    }
}

@media (max-height: 560px) and (orientation: landscape) {
    .stage-hero { min-height: auto; padding: 28px 0; }
}