/* intro v17 — Death Note noir: circuit band, pulse rings, extrude text, duotone media, scroll slide-in */

/* Circuit-board traces — colour via Tailwind text-* on the band, currentColor in the pattern */
.intro-noir__circuit {
    background-image:
        repeating-linear-gradient(0deg, currentColor 0 1px, transparent 1px 32px),
        repeating-linear-gradient(90deg, currentColor 0 1px, transparent 1px 32px);
    opacity: 0.18;
    -webkit-mask: linear-gradient(180deg, black, transparent);
    mask: linear-gradient(180deg, black, transparent);
}

/* Pulse rings from the band centre (size + placement so Bootstrap has no utility gap) */
.intro-noir__ring {
    width: 6rem;
    height: 6rem;
    top: 6rem;
    left: 50%;
    margin-left: -3rem;
    opacity: 0;
    animation: intro-noir-pulse 3.4s ease-out infinite;
}
.intro-noir__ring--2 { animation-delay: 1.7s; }

@keyframes intro-noir-pulse {
    0%   { transform: scale(0.4); opacity: 0.55; }
    100% { transform: scale(3.4); opacity: 0; }
}

/* Emboss seal circle */
.intro-noir__seal {
    width: 7rem;
    height: 7rem;
    font-size: 0.75rem;
    line-height: 1.1;
    padding: 0.75rem;
    transform: rotate(-8deg);
}

/* Extrude — stacked text-shadow depth using the element's own colour */
.intro-noir__extrude {
    text-shadow: 1px 1px 0 currentColor, 2px 2px 0 currentColor, 3px 3px 0 currentColor;
}

/* Duotone media: grayscale image + primary multiply tint (colour is a Tailwind class) */
.intro-noir__img {
    height: 10rem;
    object-fit: cover;
    filter: grayscale(1) contrast(1.05);
}

/* Sticky aside offset (Bootstrap position-sticky has no top-16 utility) */
@media (min-width: 992px) {
    .intro-noir__aside { top: 4rem; }
}
.intro-noir__tint {
    mix-blend-mode: multiply;
    opacity: 0.5;
}

/* Letter-spacing widen on hover */
.intro-noir__ttl { transition: letter-spacing 260ms ease; }
[data-card]:hover .intro-noir__ttl { letter-spacing: 0.08em; }

/* Slide-in entrance — pure CSS on the reliable [data-card] attribute; always ends visible */
@keyframes intro-noir-rise {
    from { opacity: 0; transform: translateY(2rem); }
    to   { opacity: 1; transform: translateY(0); }
}
.intro-noir [data-card] { animation: intro-noir-rise 560ms ease both; }

@media (prefers-reduced-motion: reduce) {
    .intro-noir__ring { animation: none; }
    .intro-noir [data-card] { animation: none; }
}

/* process editorial — full-bleed banner, serif display, step list */
.process-editorial__banner {
    aspect-ratio: 21 / 5;
    max-height: 16rem;
}

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

.process-editorial__headline {
    font-family: Georgia, "Times New Roman", Times, serif;
}

.process-editorial__intro {
    max-width: 42rem;
}

.process-editorial__pill {
    letter-spacing: 0.02em;
}

.process-editorial__list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.process-editorial__step-num {
    display: inline-block;
    min-width: 1.75rem;
    flex-shrink: 0;
    font-variant-numeric: tabular-nums;
}

.process-editorial__step:last-child {
    border-bottom: 0;
}

@media (min-width: 768px) {
    .process-editorial__banner {
        aspect-ratio: 21 / 4;
        max-height: 18rem;
    }
}

@media (min-width: 992px) {
    .process-editorial__nav {
        border-top: 0;
        padding-top: 0.5rem;
    }
}

@media (max-width: 991px) {
    .process-editorial__banner {
        aspect-ratio: 16 / 6;
        max-height: 14rem;
    }
}

/* v24 - ascending staircase offsets (per-index transform has no TW/BS utility) */
@media (min-width: 640px) {
    [data-stair-step] {
        transition: transform 200ms ease;
    }

    [data-stair-step="0"] {
        transform: translateX(0);
    }

    [data-stair-step="1"] {
        transform: translateX(1.5rem);
    }

    [data-stair-step="2"] {
        transform: translateX(3rem);
    }

    [data-stair-step="3"] {
        transform: translateX(4.5rem);
    }

    [data-stair-step="4"] {
        transform: translateX(6rem);
    }
}

/* advantages mosaic — bento layout + feature image cover + decorative shapes (layout only, no colors) */

/* decor sizes/positions live here so they render in Bootstrap too (BS has no w-N/h-N/inset utilities) */
.advantages-mosaic__ring {
    width: 16rem;
    height: 16rem;
    top: -4rem;
    right: -4rem;
}

.advantages-mosaic__shape {
    width: 12rem;
    height: 12rem;
    bottom: -5rem;
    left: -2.5rem;
    transform: rotate(45deg);
}

.advantages-mosaic {
    grid-template-columns: 1fr;
}

.advantages-mosaic__img {
    object-fit: cover;
}

@media (min-width: 768px) {
    .advantages-mosaic {
        grid-template-columns: repeat(3, 1fr);
        grid-auto-rows: minmax(11rem, 1fr);
        grid-auto-flow: row dense;
    }

    /* tall image feature tile fills the left column across two rows */
    .advantages-mosaic__cell--feature {
        grid-column: span 1;
        grid-row: span 2;
    }
}


.narrative-chapter__title-trail { margin-bottom: 2rem; }

.narrative-chapter__shell-section-pad {
    padding-top: 6rem;
    padding-bottom: 6rem;
}

.content-heading-gap {
    margin-bottom: 2rem;
}

/* FAQ v10 — accordion panel height */
.faq-answer {
    max-height: 0;
    transition: max-height 0.3s ease-in-out;
}

.faq-icon-circle { width: 1.5rem; height: 1.5rem; }