/*
 * CHAMSPACE ABOUT V4 — Full Brand Story
 * Namespace: .cs-v4-*
 * Dùng ảnh Chamspace thực tế. Tone: tin cậy, chân thật, tinh tế.
 */

/* ═══════════════ 1. HERO — Editorial header ═══════════════ */
.cs-v4-hero {
    position: relative;
    min-height: clamp(300px, 45vh, 520px);
    display: flex;
    flex-direction: column;
    justify-content: center;
    margin-bottom: 20px;
    padding: clamp(40px, 8vh, 80px) 0;
}

.cs-v4-hero-eyebrow {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.22em;
    color: #E20612;
    margin-bottom: 16px;
}

.cs-v4-hero h1 {
    font-size: clamp(3rem, 7vw, 6.5rem);
    font-weight: 900;
    line-height: 0.92;
    letter-spacing: -0.04em;
    color: #1a1a1a;
    margin: 0 0 20px;
}
.cs-v4-hero h1 em {
    font-style: normal;
    color: #E20612;
}

.cs-v4-hero-lead {
    font-size: clamp(16px, 1.8vw, 22px);
    color: #666;
    line-height: 1.55;
    max-width: 640px;
    margin: 0;
    font-weight: 400;
}

/* Big hero image below */
.cs-v4-hero-img {
    margin: 40px 0 0;
    border-radius: 16px;
    overflow: hidden;
    aspect-ratio: 21/9;
    background: #e8e8e8;
}
.cs-v4-hero-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* ═══════════════ 2. SỨ MỆNH & TẦM NHÌN ═══════════════ */
.cs-v4-promise {
    padding: 50px 0;
}

.cs-v4-promise-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.cs-v4-promise-card {
    background: #fff;
    border: 1px solid #e5e5e5;
    border-radius: 16px;
    padding: clamp(28px, 4vw, 40px);
}

.cs-v4-promise-card-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background: rgba(226,6,18,0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 18px;
}

.cs-v4-promise-card h3 {
    font-size: 20px;
    font-weight: 800;
    color: #1a1a1a;
    margin: 0 0 8px;
}
.cs-v4-promise-card p {
    font-size: 13px;
    color: #888;
    line-height: 1.7;
    margin: 0;
}

/* ═══════════════ 3. GIÁ TRỊ CỐT LÕI ═══════════════ */
.cs-v4-values {
    padding: 50px 0;
}

.cs-v4-values-banner {
    background: #1a1a1a;
    border-radius: 20px;
    padding: clamp(32px, 5vw, 56px) clamp(24px, 5vw, 48px);
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.cs-v4-val-item {
    text-align: center;
}

.cs-v4-val-num {
    font-size: 36px;
    font-weight: 900;
    color: #E20612;
    letter-spacing: -0.03em;
    line-height: 1;
    margin-bottom: 6px;
    display: block;
}
.cs-v4-val-title {
    font-size: 14px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 6px;
}
.cs-v4-val-desc {
    font-size: 11px;
    color: rgba(255,255,255,0.40);
    line-height: 1.6;
    margin: 0;
}

/* ═══════════════ 4. CÂU CHUYỆN THƯƠNG HIỆU ═══════════════ */
.cs-v4-story {
    padding: 60px 0;
}

.cs-v4-story-spread {
    display: flex;
    gap: 56px;
    align-items: center;
}

.cs-v4-story-img {
    flex: 0 0 44%;
    border-radius: 16px;
    overflow: hidden;
    aspect-ratio: 3/4;
    background: #ddd;
    box-shadow: 0 20px 60px rgba(0,0,0,0.08);
}
.cs-v4-story-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.cs-v4-story-text {
    flex: 1;
}

.cs-v4-story-text h2 {
    font-size: clamp(28px, 4vw, 44px);
    font-weight: 900;
    color: #1a1a1a;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin: 0 0 20px;
}

.cs-v4-story-text p {
    font-size: 14px;
    color: #666;
    line-height: 1.8;
    margin: 0 0 16px;
}
.cs-v4-story-text p:last-child { margin-bottom: 0; }

.cs-v4-story-highlight {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(226,6,18,0.08);
    border-left: 3px solid #E20612;
    border-radius: 0 4px 4px 0;
    font-size: 13px;
    font-weight: 700;
    color: #1a1a1a;
    margin-top: 8px;
}

/* ═══════════════ 5. HÀNH TRÌNH (Timeline) ═══════════════ */
.cs-v4-journey {
    padding: 50px 0;
}

.cs-v4-timeline {
    display: flex;
    gap: 0;
    position: relative;
}

.cs-v4-tml-item {
    flex: 1;
    padding: 0 12px;
    position: relative;
}

/* Connecting line */
.cs-v4-tml-item::after {
    content: '';
    position: absolute;
    top: 38px;
    left: 0;
    right: 0;
    height: 1px;
    background: rgba(0,0,0,0.06);
    z-index: 0;
}

.cs-v4-tml-dot {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #fff;
    border: 3px solid #E20612;
    position: relative;
    z-index: 1;
    margin: 28px auto 20px;
}

.cs-v4-tml-year {
    font-size: 22px;
    font-weight: 900;
    color: #E20612;
    letter-spacing: -0.02em;
    text-align: center;
    margin-bottom: 8px;
}

.cs-v4-tml-img {
    width: 100%;
    aspect-ratio: 3/4;
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 16px;
    background: #eee;
}
.cs-v4-tml-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.cs-v4-tml-item h4 {
    font-size: 16px;
    font-weight: 800;
    color: #1a1a1a;
    margin: 0 0 6px;
    text-align: center;
}
.cs-v4-tml-item p {
    font-size: 11px;
    color: #888;
    line-height: 1.6;
    text-align: center;
    margin: 0;
}

/* ═══════════════ 6. QUY TRÌNH CHI TIẾT ═══════════════ */
.cs-v4-process {
    padding: 60px 0;
    background: #0d0d0d;
    border-radius: 20px;
    margin: 30px 0;
}

.cs-v4-process-inner {
    padding: 0 clamp(24px, 5vw, 48px);
}

.cs-v4-process .home-v1-eyebrow-text { color: #E20612; }
.cs-v4-process .home-v1-eyebrow-line { background: rgba(226,6,18,0.20); }
.cs-v4-process-label {
    font-size: clamp(24px, 5vw, 44px);
    font-weight: 900;
    color: #fff;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin: 0 0 12px;
}
.cs-v4-process-intro {
    font-size: 14px;
    color: rgba(255,255,255,0.45);
    line-height: 1.7;
    max-width: 600px;
    margin: 0 0 40px;
}

/* Process step row */
.cs-v4-proc-step {
    display: grid;
    grid-template-columns: 60px 1fr 1fr;
    gap: 24px;
    align-items: center;
    padding: 32px 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}
.cs-v4-proc-step:last-child { border: none; }

.cs-v4-proc-idx {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: 2px solid rgba(255,255,255,0.10);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 900;
    color: rgba(255,255,255,0.20);
    transition: all 0.3s;
}
.cs-v4-proc-step:hover .cs-v4-proc-idx {
    background: #E20612;
    border-color: #E20612;
    color: #fff;
}

.cs-v4-proc-content h4 {
    font-size: 18px;
    font-weight: 800;
    color: #fff;
    margin: 0 0 6px;
}
.cs-v4-proc-content p {
    font-size: 12px;
    color: rgba(255,255,255,0.40);
    line-height: 1.7;
    margin: 0;
}

.cs-v4-proc-evidence {
    border-radius: 10px;
    overflow: hidden;
    aspect-ratio: 4/3;
    background: #1a1a1a;
}
.cs-v4-proc-evidence img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* ═══════════════ 7. ĐỘI NGŨ ═══════════════ */
.cs-v4-team {
    padding: 50px 0;
}

.cs-v4-team-layout {
    display: flex;
    gap: 40px;
    align-items: center;
}

.cs-v4-team-img {
    flex: 0 0 52%;
    border-radius: 16px;
    overflow: hidden;
    aspect-ratio: 4/3;
    background: #e8e8e8;
}
.cs-v4-team-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.cs-v4-team-text {
    flex: 1;
}
.cs-v4-team-text blockquote {
    font-size: clamp(17px, 1.8vw, 22px);
    font-weight: 500;
    color: #1a1a1a;
    line-height: 1.5;
    font-style: italic;
    margin: 0 0 16px;
    padding: 0;
    border: none;
}
.cs-v4-team-text cite {
    font-size: 13px;
    font-weight: 700;
    color: #888;
    font-style: normal;
}

.cs-v4-team-strip {
    display: flex;
    gap: 20px;
    margin-top: 30px;
}

.cs-v4-team-role {
    flex: 1;
    background: #f7f7f7;
    border-radius: 10px;
    padding: 18px;
}
.cs-v4-team-role h5 {
    font-size: 13px;
    font-weight: 700;
    color: #1a1a1a;
    margin: 0 0 4px;
}
.cs-v4-team-role p {
    font-size: 11px;
    color: #999;
    margin: 0;
}

/* ═══════════════ 8. SỐ ═══════════════ */
.cs-v4-numbers {
    padding: 50px 0;
}

.cs-v4-num-row {
    display: flex;
    gap: 20px;
    margin-bottom: 28px;
}

.cs-v4-num-card {
    flex: 1;
    text-align: center;
    padding: 36px 20px;
    background: #fff;
    border: 1px solid #e5e5e5;
    border-radius: 16px;
}

.cs-v4-num-val {
    font-size: clamp(36px, 5vw, 52px);
    font-weight: 900;
    color: #E20612;
    letter-spacing: -0.03em;
    line-height: 1;
    margin-bottom: 4px;
}
.cs-v4-num-lab {
    font-size: 11px;
    font-weight: 700;
    color: #aaa;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.cs-v4-num-banner {
    border-radius: 16px;
    overflow: hidden;
    aspect-ratio: 16/5;
    background: #ddd;
    position: relative;
}
.cs-v4-num-banner img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.cs-v4-num-banner-cap {
    position: absolute;
    bottom: 18px;
    left: 22px;
    font-size: 11px;
    font-weight: 700;
    color: #fff;
    background: rgba(0,0,0,0.55);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    padding: 10px 18px;
    border-radius: 4px;
}

/* ═══════════════ 9. CTA ═══════════════ */
.cs-v4-cta { padding: 40px 0 0; }

/* ═══════════════ RESPONSIVE — 768px ═══════════════ */
@media (max-width: 768px) {
    .cs-v4-hero { min-height: auto; padding: 24px 0; }
    .cs-v4-hero h1 { font-size: 2.4rem; }
    .cs-v4-hero-lead { font-size: 14px; }
    .cs-v4-hero-img { aspect-ratio: 4/3; margin-top: 24px; }

    .cs-v4-promise { padding: 32px 0; }
    .cs-v4-promise-grid { grid-template-columns: 1fr; gap: 16px; }

    .cs-v4-values { padding: 32px 0; }
    .cs-v4-values-banner { grid-template-columns: repeat(2, 1fr); gap: 20px; padding: 32px 20px; }

    .cs-v4-story { padding: 32px 0; }
    .cs-v4-story-spread { flex-direction: column; gap: 28px; }
    .cs-v4-story-img { flex: auto; width: 100%; aspect-ratio: 4/3; }

    .cs-v4-journey { padding: 32px 0; }
    .cs-v4-timeline { flex-direction: column; gap: 28px; }
    .cs-v4-tml-item::after { display: none; }
    .cs-v4-tml-item { padding: 0; }
    .cs-v4-tml-dot { margin: 0 0 14px 0; }
    .cs-v4-tml-year,
    .cs-v4-tml-item h4,
    .cs-v4-tml-item p { text-align: left; }

    .cs-v4-process { padding: 40px 0; border-radius: 14px; margin: 16px 0; }
    .cs-v4-proc-step { grid-template-columns: 48px 1fr; grid-template-rows: auto auto; gap: 12px; padding: 20px 0; }
    .cs-v4-proc-idx { width: 48px; height: 48px; font-size: 16px; grid-row: 1/3; }
    .cs-v4-proc-content { grid-column: 2; }
    .cs-v4-proc-evidence { grid-column: 2; aspect-ratio: 4/2; }

    .cs-v4-team { padding: 32px 0; }
    .cs-v4-team-layout { flex-direction: column; gap: 24px; }
    .cs-v4-team-img { flex: auto; width: 100%; }
    .cs-v4-team-strip { flex-direction: column; gap: 12px; }

    .cs-v4-numbers { padding: 32px 0; }
    .cs-v4-num-row { flex-direction: column; gap: 12px; margin-bottom: 20px; }
    .cs-v4-num-banner { aspect-ratio: 4/3; }
    .cs-v4-num-banner-cap { bottom: 10px; left: 12px; font-size: 10px; padding: 8px 14px; }

    .cs-v4-cta { padding: 24px 0 0; }
}