/* =============================================================================
   ABOUT US : FLAGSHIP BRAND STORY PAGE (bxabout-*)
   A dedicated, fully-isolated design language for the About page.
   Namespace: every selector is prefixed bxabout- so nothing here can ever
   collide with home/, services/, or any other page's CSS.
   ============================================================================= */

#bxabout, #bxabout * {
    box-sizing: border-box;
}

#bxabout {
    --ba-ink: #12100e;
    --ba-paper: #f6f3ee;
    --ba-paper-deep: #ece7dd;
    --ba-red: #e41f26;
    --ba-red-deep: #b81119;
    --ba-line: #d8d2c4;
    --ba-muted: #6f6a60;
    --ba-faint: #a29c8e;
    --ba-serif: 'Fraunces', serif;
    --ba-sans: 'Inter', sans-serif;
    --ba-ease: cubic-bezier(0.16, 1, 0.3, 1);
    background: var(--ba-paper);
    color: var(--ba-ink);
    font-family: var(--ba-sans);
    overflow-x: hidden;
    position: relative;
}

#bxabout a { color: inherit; }
#bxabout img { max-width: 100%; display: block; }

#bxabout .ba-eyebrow {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    color: var(--ba-red);
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

#bxabout .ba-eyebrow::before {
    content: '';
    width: 22px;
    height: 1px;
    background: var(--ba-red);
}

/* Reveal-on-scroll base state, used across every section */
#bxabout .ba-reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.9s var(--ba-ease), transform 0.9s var(--ba-ease);
}
#bxabout .ba-reveal.is-in {
    opacity: 1;
    transform: translateY(0);
}

/* =============================================================================
   CHAPTER 01 : ARRIVAL (hero)
   Offset editorial grid: rotated vertical index rail + bleeding portrait with
   an overlapping caption card. Deliberately NOT centered, NOT full-bleed
   text-on-image like Home/Services heroes.
   ============================================================================= */
.ba-arrival {
    position: relative;
    background: var(--ba-ink);
    color: var(--ba-paper);
    display: grid;
    grid-template-columns: 90px 1fr 1.05fr;
    min-height: 92vh;
}

.ba-arrival-rail {
    border-right: 1px solid rgba(246,243,238,0.12);
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding-bottom: 60px;
    position: relative;
}

.ba-arrival-rail span {
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    font-size: 12px;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--ba-faint);
    font-weight: 600;
}

.ba-arrival-rail::before {
    content: '';
    position: absolute;
    top: 50px;
    bottom: 140px;
    left: 50%;
    width: 1px;
    background: linear-gradient(to bottom, transparent, rgba(228,31,38,0.6), transparent);
}

.ba-arrival-copy {
    padding: 130px 56px 80px 56px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.ba-arrival-copy .ba-eyebrow { color: #ff5b5f; margin-bottom: 34px; }
.ba-arrival-copy .ba-eyebrow::before { background: #ff5b5f; }

.ba-arrival-headline {
    font-family: var(--ba-serif);
    font-weight: 500;
    font-size: clamp(2.6rem, 4.6vw, 4.4rem);
    line-height: 1.04;
    letter-spacing: -0.01em;
    margin: 0 0 30px 0;
}

.ba-arrival-headline em {
    font-style: italic;
    color: #ff5b5f;
}

.ba-arrival-sub {
    font-size: 16px;
    line-height: 1.8;
    color: #cfc9bf;
    max-width: 430px;
    font-weight: 300;
    margin-bottom: 46px;
}

.ba-arrival-meta {
    display: flex;
    gap: 40px;
    padding-top: 30px;
    border-top: 1px solid rgba(246,243,238,0.14);
}

.ba-arrival-meta div { display: flex; flex-direction: column; gap: 4px; }
.ba-arrival-meta b { font-family: var(--ba-serif); font-size: 26px; font-weight: 500; }
.ba-arrival-meta small { font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ba-faint); }

.ba-arrival-visual {
    position: relative;
    /* overflow intentionally NOT hidden here : the caption card below is
       designed to break out of this column's left edge. Clipping is instead
       scoped to .ba-arrival-frame so the photo itself still stays contained. */
}

.ba-arrival-frame {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.ba-arrival-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(35%) contrast(1.05);
}

.ba-arrival-visual::after {
    content: '';
    position: absolute;
    inset: 0;
    z-index: 2;
    background: linear-gradient(200deg, rgba(18,16,14,0.05) 30%, rgba(18,16,14,0.85) 100%);
    pointer-events: none;
}

.ba-arrival-caption {
    position: absolute;
    left: -70px;
    bottom: 64px;
    z-index: 4;
    background: var(--ba-paper);
    color: var(--ba-ink);
    padding: 26px 30px;
    width: 280px;
    max-width: calc(100% - 40px);
    box-shadow: 0 30px 60px rgba(0,0,0,0.35);
}

@media (max-width: 1400px) {
    .ba-arrival-caption { left: -36px; width: 250px; padding: 22px 24px; }
}

@media (max-width: 1180px) {
    .ba-arrival-caption { left: 24px; bottom: 40px; width: min(260px, calc(100% - 48px)); }
}

.ba-arrival-caption p {
    font-family: var(--ba-serif);
    font-style: italic;
    font-size: 17px;
    line-height: 1.5;
    margin: 0 0 12px 0;
}

.ba-arrival-caption span {
    font-size: 10px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--ba-muted);
    font-weight: 700;
}

.ba-arrival-scrollcue {
    position: absolute;
    right: 32px;
    bottom: 32px;
    z-index: 4;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--ba-paper);
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.ba-arrival-scrollcue .ba-scroll-line {
    width: 1px;
    height: 34px;
    background: rgba(246,243,238,0.5);
    position: relative;
    overflow: hidden;
}

.ba-arrival-scrollcue .ba-scroll-line::after {
    content: '';
    position: absolute;
    top: -100%;
    left: 0;
    width: 100%;
    height: 100%;
    background: #ff5b5f;
    animation: baScrollDrip 1.8s ease-in-out infinite;
}

@keyframes baScrollDrip {
    0% { top: -100%; }
    60% { top: 100%; }
    100% { top: 100%; }
}

/* =============================================================================
   CHAPTER 02 : WHAT WE BELIEVE (philosophy)
   Typographic list, no cards, no icons. Hovering a line swaps the ambient
   backdrop image behind the whole section (desktop). Mobile: stacked with
   inline thumbnail.
   ============================================================================= */
.ba-creed {
    position: relative;
    background: var(--ba-ink);
    color: var(--ba-paper);
    padding: 140px 0 120px;
}

.ba-creed-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.ba-creed-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    position: absolute;
    inset: 0;
    transition: opacity 1s var(--ba-ease);
    filter: grayscale(60%) brightness(0.5);
}

.ba-creed-bg img.ba-active { opacity: 0.4; }

.ba-creed-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, var(--ba-ink) 0%, rgba(18,16,14,0.6) 40%, var(--ba-ink) 100%);
}

.ba-creed-inner {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 60px;
}

.ba-creed-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 30px;
    margin-bottom: 70px;
    border-bottom: 1px solid rgba(246,243,238,0.14);
    padding-bottom: 36px;
}

.ba-creed-head h2 {
    font-family: var(--ba-serif);
    font-weight: 500;
    font-size: clamp(2rem, 3vw, 2.8rem);
    margin: 18px 0 0 0;
    max-width: 560px;
    line-height: 1.15;
}

.ba-creed-head p {
    font-size: 14px;
    color: var(--ba-faint);
    max-width: 300px;
    line-height: 1.7;
    font-weight: 300;
}

.ba-creed-list { list-style: none; margin: 0; padding: 0; }

.ba-creed-row {
    display: grid;
    grid-template-columns: 70px 1fr 40px;
    align-items: center;
    padding: 30px 0;
    border-bottom: 1px solid rgba(246,243,238,0.1);
    cursor: default;
    transition: padding-left 0.4s var(--ba-ease);
}

.ba-creed-row:hover {
    padding-left: 18px;
}

.ba-creed-num {
    font-family: var(--ba-serif);
    font-size: 14px;
    color: var(--ba-faint);
    font-weight: 400;
}

.ba-creed-text h3 {
    font-family: var(--ba-serif);
    font-weight: 500;
    font-size: clamp(1.4rem, 2.4vw, 2.1rem);
    margin: 0 0 8px 0;
    transition: color 0.3s ease;
}

.ba-creed-row:hover .ba-creed-text h3 { color: #ff5b5f; }

.ba-creed-text p {
    font-size: 14px;
    color: var(--ba-faint);
    line-height: 1.7;
    max-width: 620px;
    font-weight: 300;
    margin: 0;
}

.ba-creed-arrow {
    font-size: 18px;
    color: var(--ba-faint);
    transition: transform 0.4s var(--ba-ease), color 0.3s ease;
    text-align: right;
}

.ba-creed-row:hover .ba-creed-arrow {
    transform: translateX(6px);
    color: #ff5b5f;
}

/* =============================================================================
   CHAPTER 03 : THE JOURNEY (vertical alternating chapters)
   Deliberately vertical + alternating (Home's timeline is a horizontal
   ledger with dots : this is its opposite: a book, not a spreadsheet).
   ============================================================================= */
.ba-journey {
    background: var(--ba-paper);
    padding: 140px 0;
}

.ba-journey-head {
    max-width: 1200px;
    margin: 0 auto 90px;
    padding: 0 60px;
}

.ba-journey-head h2 {
    font-family: var(--ba-serif);
    font-size: clamp(2.2rem, 3.6vw, 3.2rem);
    font-weight: 500;
    margin: 20px 0 0 0;
    max-width: 640px;
    line-height: 1.15;
}

.ba-journey-spine {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 60px;
    position: relative;
}

.ba-journey-spine::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 1px;
    background: var(--ba-line);
}

.ba-chapter {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    padding: 70px 0;
    position: relative;
}

.ba-chapter:not(:last-child) { border-bottom: 1px solid var(--ba-line); }

.ba-chapter-media { position: relative; }

.ba-chapter-media img {
    width: 100%;
    aspect-ratio: 4/5;
    object-fit: cover;
    filter: grayscale(20%);
}

.ba-chapter-year {
    position: absolute;
    top: -18px;
    left: -18px;
    background: var(--ba-red);
    color: #fff;
    font-family: var(--ba-serif);
    font-size: 22px;
    font-weight: 500;
    padding: 10px 18px;
    z-index: 2;
}

.ba-chapter-text h3 {
    font-family: var(--ba-serif);
    font-style: italic;
    font-weight: 500;
    font-size: clamp(1.5rem, 2.2vw, 2rem);
    margin: 0 0 16px 0;
}

.ba-chapter-text p {
    font-size: 15px;
    line-height: 1.85;
    color: var(--ba-muted);
    font-weight: 400;
    max-width: 460px;
}

.ba-chapter--reverse .ba-chapter-media { order: 2; }
.ba-chapter--reverse .ba-chapter-text { order: 1; }
.ba-chapter--reverse .ba-chapter-year { left: auto; right: -18px; }

/* =============================================================================
   CHAPTER 04 : LEADERSHIP (a letter, not a split-panel : deliberately the
   opposite composition of the existing .ceo-section on Home)
   ============================================================================= */
.ba-letter {
    background: var(--ba-paper-deep);
    padding: 140px 0;
    display: flex;
    justify-content: center;
}

.ba-letter-sheet {
    max-width: 760px;
    width: 100%;
    margin: 0 60px;
    background: var(--ba-paper);
    border: 1px solid var(--ba-line);
    padding: 70px 64px;
    position: relative;
    box-shadow: 0 40px 80px rgba(18,16,14,0.06);
}

.ba-letter-sheet::before {
    content: '';
    position: absolute;
    top: 22px;
    left: 22px;
    right: 22px;
    bottom: 22px;
    border: 1px solid var(--ba-line);
    pointer-events: none;
}

.ba-letter-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
    padding-bottom: 26px;
    border-bottom: 1px solid var(--ba-line);
}

.ba-letter-head .ba-eyebrow { margin: 0; }

.ba-letter-head span {
    font-size: 12px;
    color: var(--ba-faint);
    font-style: italic;
    font-family: var(--ba-serif);
}

.ba-letter-body p {
    font-family: var(--ba-serif);
    font-size: 19px;
    line-height: 1.85;
    color: #262319;
    margin: 0 0 24px 0;
}

.ba-letter-body p:first-of-type::first-letter {
    font-size: 62px;
    line-height: 42px;
    float: left;
    padding: 6px 12px 0 0;
    color: var(--ba-red);
    font-weight: 600;
}

.ba-letter-sign {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-top: 40px;
}

.ba-letter-sign img {
    width: 44px;
    height: 44px;
    flex-shrink: 0;
    border-radius: 50%;
    object-fit: cover;
    filter: grayscale(20%);
}

.ba-letter-sign div {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.ba-letter-sign b {
    display: block;
    font-family: var(--ba-serif);
    font-size: 15px;
    font-weight: 500;
    line-height: 1.3;
}

.ba-letter-sign small {
    font-size: 11px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--ba-muted);
    line-height: 1.3;
}

/* =============================================================================
   CHAPTER 05 : CULTURE (horizontal snap filmstrip, not a masonry grid :
   Events page already owns masonry)
   ============================================================================= */
.ba-culture { padding: 140px 0 120px; background: var(--ba-paper); overflow: hidden; }

.ba-culture-head {
    max-width: 1200px;
    margin: 0 auto 56px;
    padding: 0 60px;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 30px;
    flex-wrap: wrap;
}

.ba-culture-head h2 {
    font-family: var(--ba-serif);
    font-weight: 500;
    font-size: clamp(2rem, 3vw, 2.7rem);
    margin: 18px 0 0 0;
    max-width: 520px;
    line-height: 1.15;
}

.ba-culture-head p {
    font-size: 14px;
    color: var(--ba-muted);
    max-width: 320px;
    line-height: 1.7;
}

.ba-filmstrip {
    display: flex;
    gap: 22px;
    width: 100%;
    overflow-x: auto;
    padding: 0 60px 20px;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
}

.ba-filmstrip::-webkit-scrollbar { display: none; }

.ba-frame {
    flex: 0 0 340px;
    scroll-snap-align: start;
    position: relative;
}

.ba-frame:nth-child(even) { margin-top: 46px; }

.ba-frame img {
    width: 100%;
    height: 420px;
    object-fit: cover;
    filter: grayscale(10%);
}

.ba-frame figcaption {
    margin-top: 14px;
    font-size: 12px;
    color: var(--ba-muted);
    letter-spacing: 0.04em;
}

.ba-frame figcaption b { color: var(--ba-ink); font-weight: 600; }

/* =============================================================================
   CHAPTER 06 : HOW WE WORK (blueprint process : plan-view aesthetic,
   distinct from the Services capability rail)
   ============================================================================= */
.ba-blueprint {
    background: var(--ba-ink);
    color: var(--ba-paper);
    padding: 140px 0;
    position: relative;
    background-image:
        linear-gradient(rgba(246,243,238,0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(246,243,238,0.05) 1px, transparent 1px);
    background-size: 42px 42px;
}

.ba-blueprint-inner { max-width: 1200px; margin: 0 auto; padding: 0 60px; }

.ba-blueprint-head { margin-bottom: 80px; max-width: 620px; }

.ba-blueprint-head h2 {
    font-family: var(--ba-serif);
    font-weight: 500;
    font-size: clamp(2.1rem, 3.2vw, 2.9rem);
    margin: 18px 0 0 0;
    line-height: 1.15;
}

.ba-blueprint-rows { display: flex; flex-direction: column; }

.ba-blueprint-row {
    display: grid;
    grid-template-columns: 100px 1fr 1fr;
    gap: 40px;
    padding: 34px 0;
    border-top: 1px dashed rgba(246,243,238,0.22);
    align-items: baseline;
}

.ba-blueprint-row:last-child { border-bottom: 1px dashed rgba(246,243,238,0.22); }

.ba-blueprint-tag {
    font-family: var(--ba-serif);
    font-size: 13px;
    color: #ff5b5f;
    letter-spacing: 0.08em;
}

.ba-blueprint-row h4 {
    font-size: 18px;
    font-weight: 600;
    margin: 0;
    color: var(--ba-paper);
}

.ba-blueprint-row p {
    font-size: 14px;
    font-weight: 300;
    color: var(--ba-faint);
    line-height: 1.7;
    margin: 0;
}

/* =============================================================================
   CHAPTER 07 : CLIENT TRUST (single rotating spotlight quote, not a logo
   marquee : Home already owns the marquee)
   ============================================================================= */
.ba-trust {
    background: var(--ba-paper-deep);
    padding: 140px 0;
    display: flex;
    justify-content: center;
    text-align: center;
}

.ba-trust-inner { max-width: 820px; padding: 0 40px; }

.ba-trust-quote-wrap { position: relative; min-height: 220px; }

.ba-trust-quote {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 0.7s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.ba-trust-quote.ba-active { opacity: 1; position: relative; }

.ba-trust-quote p {
    font-family: var(--ba-serif);
    font-style: italic;
    font-size: clamp(1.4rem, 2.6vw, 2rem);
    line-height: 1.5;
    margin: 0 0 26px 0;
}

.ba-trust-quote b { font-size: 14px; font-weight: 700; display: block; }
.ba-trust-quote span { font-size: 12px; color: var(--ba-muted); text-transform: uppercase; letter-spacing: 0.08em; }

.ba-trust-dots { display: flex; gap: 10px; justify-content: center; margin-top: 40px; }

.ba-trust-dot {
    width: 8px; height: 8px; border-radius: 50%;
    background: var(--ba-line);
    cursor: pointer;
    border: none;
    padding: 0;
    transition: background 0.3s ease;
}

.ba-trust-dot.ba-active { background: var(--ba-red); }

/* =============================================================================
   CHAPTER 08 : GLOBAL PRESENCE (passport-stamp index, not a literal map)
   ============================================================================= */
.ba-passport { background: var(--ba-paper); padding: 140px 0; }

.ba-passport-inner { max-width: 1200px; margin: 0 auto; padding: 0 60px; }

.ba-passport-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 30px;
    margin-bottom: 60px;
    flex-wrap: wrap;
}

.ba-passport-head h2 {
    font-family: var(--ba-serif);
    font-weight: 500;
    font-size: clamp(2rem, 3vw, 2.7rem);
    margin: 18px 0 0 0;
    max-width: 520px;
    line-height: 1.15;
}

.ba-stamp-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: var(--ba-line);
    border: 1px solid var(--ba-line);
}

.ba-stamp {
    background: var(--ba-paper);
    padding: 34px 22px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    transition: background 0.3s ease;
}

.ba-stamp:hover { background: var(--ba-ink); color: var(--ba-paper); }

.ba-stamp-code {
    font-family: var(--ba-serif);
    font-size: 32px;
    font-weight: 500;
    letter-spacing: 0.02em;
}

.ba-stamp-country { font-size: 13px; font-weight: 600; }
.ba-stamp-note { font-size: 11px; color: var(--ba-muted); }
.ba-stamp:hover .ba-stamp-note { color: var(--ba-faint); }

/* =============================================================================
   CHAPTER 09 : FUTURE VISION (bold split statement)
   ============================================================================= */
.ba-vision {
    background: var(--ba-red);
    color: #fff;
    padding: 130px 60px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.ba-vision h2 {
    font-family: var(--ba-serif);
    font-weight: 500;
    font-size: clamp(2.2rem, 4vw, 3.4rem);
    line-height: 1.12;
    margin: 0;
    max-width: 560px;
}

.ba-vision p {
    font-size: 15px;
    line-height: 1.85;
    font-weight: 300;
    max-width: 440px;
    opacity: 0.92;
}

/* =============================================================================
   CHAPTER 10 : CTA (final)
   Outer section sits on the page's light paper background (full width, like
   every other chapter); the CTA itself is a centered floating card : the
   same "contained card before the footer" pattern used on the Services
   page : rather than a full-bleed dark band.
   ============================================================================= */
.ba-cta {
    background: var(--ba-paper);
    padding: 60px 24px 100px;
}

.ba-cta-card {
    position: relative;
    max-width: 880px;
    margin: 0 auto;
    background: var(--ba-ink);
    color: var(--ba-paper);
    text-align: center;
    padding: 90px 60px;
    border-radius: 28px;
    overflow: hidden;
    isolation: isolate;
    box-shadow: 0 40px 90px rgba(18,16,14,0.22);
}

.ba-cta-card::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 620px;
    height: 620px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(228,31,38,0.35), transparent 70%);
    z-index: -2;
    pointer-events: none;
}

.ba-cta-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(246,243,238,0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(246,243,238,0.05) 1px, transparent 1px);
    background-size: 42px 42px;
    mask-image: radial-gradient(ellipse at center, black, transparent 75%);
    z-index: -1;
    pointer-events: none;
}

.ba-cta-eyebrow {
    font-size: 12px;
    letter-spacing: 0.24em;
    text-transform: uppercase;
    color: var(--ba-faint);
    margin-bottom: 26px;
    display: block;
    position: relative;
    z-index: 1;
}

.ba-cta-card h2 {
    font-family: var(--ba-serif);
    font-weight: 500;
    font-size: clamp(2.1rem, 4.4vw, 3.4rem);
    line-height: 1.1;
    max-width: 640px;
    margin: 0 auto 40px;
    position: relative;
    z-index: 1;
}

.ba-cta-card h2 em { font-style: italic; color: #ff5b5f; }

.ba-cta-actions {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

.ba-cta-btn {
    font-size: 14px;
    font-weight: 600;
    padding: 18px 34px;
    border: 1px solid var(--ba-paper);
    background: transparent;
    color: var(--ba-paper);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    clip-path: polygon(0 0, 100% 0, 100% 100%, 14px 100%, 0 calc(100% - 14px));
    transition: background 0.3s ease, color 0.3s ease;
    white-space: nowrap;
}

.ba-cta-btn--solid {
    background: var(--ba-red);
    border-color: var(--ba-red);
}

.ba-cta-btn:hover { background: var(--ba-paper); color: var(--ba-ink); }
.ba-cta-btn--solid:hover { background: #ff5b5f; border-color: #ff5b5f; color: #fff; }

@media (max-width: 720px) {
    .ba-cta { padding: 40px 16px 70px; }
    .ba-cta-card { padding: 60px 28px; border-radius: 20px; }
    .ba-cta-btn { padding: 16px 26px; font-size: 13px; white-space: normal; }
}

/* =============================================================================
   RESPONSIVE
   ============================================================================= */
@media (max-width: 1100px) {
    .ba-arrival { grid-template-columns: 60px 1fr; }
    .ba-arrival-visual { display: none; }
    .ba-arrival-copy { padding: 120px 40px 70px; }
    .ba-chapter { grid-template-columns: 1fr; gap: 30px; }
    .ba-chapter--reverse .ba-chapter-media,
    .ba-chapter--reverse .ba-chapter-text { order: initial; }
    .ba-vision { grid-template-columns: 1fr; text-align: left; }
    .ba-stamp-grid { grid-template-columns: repeat(2, 1fr); }

    /* Once chapters stack into one column, the spine tucks into the
       section's own side gutter (negative offset, into existing padding)
       instead of bisecting the middle : so it never touches text, and the
       chapter content itself is never pushed off its original centering. */
    .ba-journey-spine::before { left: -30px; }
}

/* ---- Tablet / small-laptop tuning (1024px and below) ---- */
@media (max-width: 1024px) {
    .ba-creed-inner, .ba-journey-head, .ba-journey-spine,
    .ba-culture-head, .ba-blueprint-inner, .ba-passport-inner, .ba-filmstrip { padding-left: 40px; padding-right: 40px; }

    .ba-arrival-copy { padding: 120px 40px 70px; }

    .ba-creed { padding: 110px 0 90px; }
    .ba-creed-head { flex-direction: column; align-items: flex-start; gap: 16px; }

    .ba-journey, .ba-letter, .ba-culture, .ba-blueprint, .ba-trust, .ba-passport { padding: 100px 0; }

    .ba-blueprint-row { grid-template-columns: 80px 1fr; row-gap: 6px; }
    .ba-blueprint-row p { grid-column: 2 / 3; }

    .ba-letter-sheet { padding: 56px 44px; margin: 0 40px; }

    .ba-vision { padding: 100px 40px; }
    .ba-cta { padding: 50px 20px 90px; }
    .ba-cta-card { padding: 70px 40px; }

    .ba-journey-spine::before { left: -20px; }
}

/* ---- Mobile (≤768px) ---- */
@media (max-width: 768px) {
    .ba-arrival-meta { flex-wrap: wrap; row-gap: 18px; gap: 28px; }
    .ba-arrival-scrollcue { display: none; }

    .ba-creed-row { padding: 24px 0; }
    .ba-creed-text p { max-width: 100%; }
}

@media (max-width: 720px) {
    .ba-arrival-copy { padding: 110px 24px 60px; }
    .ba-creed-inner, .ba-journey-head, .ba-journey-spine,
    .ba-culture-head, .ba-blueprint-inner, .ba-passport-inner { padding-left: 24px; padding-right: 24px; }
    .ba-creed-row { grid-template-columns: 40px 1fr; }
    .ba-creed-arrow { display: none; }
    .ba-blueprint-row { grid-template-columns: 1fr; gap: 8px; }
    .ba-blueprint-row p { grid-column: auto; }
    .ba-letter-sheet { padding: 44px 26px; margin: 0 20px; }
    .ba-letter-sheet::before { display: none; }
    .ba-letter-body p { font-size: 16px; }
    .ba-vision { padding: 90px 24px; }
    .ba-stamp-grid { grid-template-columns: repeat(2, 1fr); }

    .ba-journey, .ba-letter, .ba-culture, .ba-blueprint, .ba-trust, .ba-passport { padding: 80px 0; }
    .ba-chapter { padding: 46px 0; }

    .ba-journey-spine::before { left: -12px; }

    .ba-culture-head { flex-direction: column; align-items: flex-start; }
    .ba-culture-head p { max-width: 100%; }

    .ba-frame { flex: 0 0 82vw; scroll-snap-align: center; }
    .ba-frame img { height: 340px; }
    .ba-frame:nth-child(even) { margin-top: 0; }

    /* Centered peek-carousel: (100vw - card width) / 2 on each side, so the
       active card sits centered with the next/previous card peeking in. */
    .ba-filmstrip { padding: 0 9vw 20px; scroll-padding: 0 9vw; }

    .ba-passport-head { flex-direction: column; align-items: flex-start; }
}

/* ---- Small mobile (≤480px) ---- */
@media (max-width: 480px) {
    .ba-arrival { min-height: auto; }
    .ba-arrival-copy { padding: 100px 18px 50px; }
    .ba-arrival-headline { font-size: clamp(2rem, 9vw, 2.6rem); }
    .ba-arrival-sub { font-size: 14px; margin-bottom: 34px; }
    .ba-arrival-meta { gap: 20px; padding-top: 22px; }
    .ba-arrival-meta b { font-size: 21px; }

    .ba-creed-head h2 { font-size: 1.5rem; }
    .ba-creed-row { grid-template-columns: 32px 1fr; padding: 20px 0; }
    .ba-creed-num { font-size: 12px; }

    .ba-journey-head h2, .ba-culture-head h2, .ba-blueprint-head h2,
    .ba-passport-head h2 { font-size: 1.5rem; }

    .ba-chapter-text h3 { font-size: 1.2rem; }
    .ba-chapter-year { font-size: 16px; padding: 7px 12px; top: -12px; left: -12px; }
    .ba-chapter--reverse .ba-chapter-year { right: -12px; }

    .ba-letter-sheet { padding: 34px 18px; margin: 0 12px; }
    .ba-letter-body p { font-size: 15px; }
    .ba-letter-body p:first-of-type::first-letter { font-size: 46px; line-height: 32px; }

    .ba-frame { flex: 0 0 88vw; }
    .ba-frame img { height: 300px; }
    .ba-filmstrip { padding: 0 6vw 20px; scroll-padding: 0 6vw; }

    .ba-stamp-grid { grid-template-columns: repeat(2, 1fr); }
    .ba-stamp { padding: 24px 16px; }
    .ba-stamp-code { font-size: 26px; }

    .ba-vision h2 { font-size: 1.7rem; }
    .ba-vision p { font-size: 14px; }

    .ba-cta { padding: 40px 14px 60px; }
    .ba-cta-card { padding: 50px 22px; border-radius: 18px; }
    .ba-cta-card h2 { font-size: 1.7rem; margin-bottom: 30px; }
    .ba-cta-actions { flex-direction: column; align-items: stretch; }
    .ba-cta-btn { justify-content: center; }
}

/* ---- Very small mobile (≤360px) ---- */
@media (max-width: 360px) {
    .ba-arrival-rail { display: none; }
    .ba-arrival { grid-template-columns: 1fr; }
    .ba-arrival-copy { padding: 90px 16px 44px; }
    .ba-arrival-meta { flex-direction: column; gap: 14px; }

    .ba-letter-sign { gap: 12px; }

    .ba-stamp-grid { grid-template-columns: 1fr 1fr; }
}