/* ===== ENGINEERED HERO ===== */
.eng-hero {
    position: relative;
    width: 100%;
    min-height: 400px;
    background: var(--slate-900);
    display: flex;
    align-items: center;
    padding: 56px 24px 72px;
    overflow: hidden;
}

.eng-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 70% 30%, rgba(204, 0, 0, 0.12) 0%, transparent 70%);
    pointer-events: none;
}

.eng-hero-inner {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.eng-hero-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(4px);
    padding: 4px 18px;
    border-radius: 100px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.70);
    border: 1px solid rgba(255, 255, 255, 0.06);
    width: fit-content;
}

.eng-hero h1 {
    font-size: 48px;
    font-weight: 700;
    color: var(--white);
    letter-spacing: -0.02em;
    line-height: 1.08;
    max-width: 700px;
}

.eng-hero h1 .highlight {
    color: var(--red-500);
}

.eng-hero p {
    font-size: 17px;
    color: rgba(255, 255, 255, 0.65);
    max-width: 600px;
    line-height: 1.7;
    margin-top: 2px;
}

.eng-hero-cta {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 28px;
    background: var(--blue-500);
    color: var(--white);
    font-weight: 600;
    font-size: 14px;
    border-radius: 8px;
    transition: all 0.25s ease;
    box-shadow: 0 4px 20px rgba(0, 104, 204, 0.30);
    width: fit-content;
    margin-top: 8px;
}

.eng-hero-cta:hover {
    background: var(--blue-600);
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(0, 104, 204, 0.40);
}

.eng-hero-cta i {
    transition: transform 0.2s ease;
}

.eng-hero-cta:hover i {
    transform: translateY(4px);
}
/* ===== HERO BUTTONS WRAPPER & PDF BUTTON ===== */
.eng-hero-btns {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-top: 8px;
}

.eng-hero-pdf-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 24px;
    background: rgba(255, 255, 255, 0.10);
    backdrop-filter: blur(8px);
    color: var(--white);
    font-weight: 600;
    font-size: 14px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.20);
    transition: all 0.25s ease;
    width: fit-content;
}

.eng-hero-pdf-btn:hover {
    background: rgba(255, 255, 255, 0.22);
    border-color: rgba(255, 255, 255, 0.40);
    transform: translateY(-2px);
    color: #fff;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
}

.eng-hero-pdf-btn i {
    color: var(--red-500);
    font-size: 16px;
    transition: transform 0.2s ease;
}

.eng-hero-pdf-btn:hover i {
    transform: scale(1.15);
}

@media (max-width: 480px) {
    .eng-hero-btns {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }
    .eng-hero-pdf-btn {
        width: 100%;
        justify-content: center;
        padding: 10px 20px;
        font-size: 13px;
    }
}
/* ===== CASES SECTION ===== */
.eng-cases {
    padding: 72px 24px 56px;
    background: var(--white);
}

.eng-cases-inner {
    max-width: 1200px;
    margin: 0 auto;
}

.eng-cases-header {
    text-align: center;
    margin-bottom: 56px;
}

.eng-cases-header .eng-cases-tag {
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--blue-500);
    margin-bottom: 6px;
}

.eng-cases-header h2 {
    font-size: 34px;
    font-weight: 700;
    color: var(--slate-900);
    letter-spacing: -0.02em;
    line-height: 1.1;
    margin-bottom: 8px;
}

.eng-cases-header p {
    font-size: 15px;
    color: var(--slate-600);
    max-width: 600px;
    margin: 0 auto;
}

/* 每个案例 */
.eng-case {
    display: flex;
    align-items: center;
    gap: 48px;
    margin-bottom: 64px;
    padding: 24px 0;
    border-bottom: 1px solid var(--slate-200);
}

.eng-case:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.eng-case-image {
    flex: 1 1 45%;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
    background: var(--slate-100);
}

.eng-case-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.4s ease;
}

.eng-case:hover .eng-case-image img {
    transform: scale(1.02);
}

.eng-case-content {
    flex: 1 1 50%;
}

.eng-case-content h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--slate-900);
    letter-spacing: -0.01em;
    margin-bottom: 8px;
}

.eng-case-content p {
    font-size: 15px;
    line-height: 1.7;
    color: var(--slate-600);
    margin-bottom: 16px;
}

.eng-case-features {
    list-style: none;
    padding: 0;
    margin: 0 0 20px 0;
    display: flex;
    flex-wrap: wrap;
    gap: 8px 16px;
}

.eng-case-features li {
    font-size: 14px;
    color: var(--slate-700);
    display: flex;
    align-items: center;
    gap: 6px;
}

.eng-case-features li i {
    color: var(--blue-500);
    font-size: 13px;
}

.eng-case-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 24px;
    background: var(--red-600);
    color: var(--white);
    font-weight: 600;
    font-size: 14px;
    border-radius: 6px;
    transition: all 0.25s ease;
}

.eng-case-cta:hover {
    background: var(--red-500);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(163, 0, 0, 0.30);
}

.eng-case-cta i {
    transition: transform 0.2s ease;
}

.eng-case-cta:hover i {
    transform: translateX(4px);
}

/* 交替布局：默认左图右文 */
.eng-case--left .eng-case-image {
    order: 0;
}
.eng-case--left .eng-case-content {
    order: 1;
}

.eng-case--right .eng-case-image {
    order: 1;
}
.eng-case--right .eng-case-content {
    order: 0;
}

/* ===== BOTTOM CTA ===== */
.eng-bottom-cta {
    background: var(--slate-900);
    padding: 56px 24px 64px;
    border-top: 1px solid var(--slate-800);
}

.eng-bottom-cta-inner {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    color: var(--white);
}

.eng-bottom-cta-inner h2 {
    font-size: 30px;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 8px;
}

.eng-bottom-cta-inner p {
    font-size: 17px;
    color: rgba(255, 255, 255, 0.70);
    margin-bottom: 24px;
    line-height: 1.6;
}

.eng-bottom-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 36px;
    background: var(--red-600);
    color: var(--white);
    font-weight: 600;
    font-size: 15px;
    border-radius: 8px;
    transition: all 0.25s ease;
    box-shadow: 0 4px 20px rgba(163, 0, 0, 0.25);
}

.eng-bottom-btn:hover {
    background: var(--red-500);
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(163, 0, 0, 0.35);
}

.eng-bottom-btn i {
    transition: transform 0.2s ease;
}

.eng-bottom-btn:hover i {
    transform: translateX(4px);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
    .eng-hero h1 {
        font-size: 38px;
    }
    .eng-hero p {
        font-size: 16px;
    }
    .eng-case {
        gap: 32px;
    }
}

@media (max-width: 820px) {
    .eng-case {
        flex-direction: column !important;
        gap: 24px;
        padding: 16px 0;
        margin-bottom: 40px;
    }
    .eng-case-image {
        order: 0 !important;
        width: 100%;
        max-width: 500px;
        margin: 0 auto;
    }
    .eng-case-content {
        order: 1 !important;
        width: 100%;
        text-align: center;
    }
    .eng-case-features {
        justify-content: center;
    }
    .eng-case-cta {
        align-self: center;
    }
    .eng-hero h1 {
        font-size: 32px;
    }
    .eng-bottom-cta-inner h2 {
        font-size: 26px;
    }
}

@media (max-width: 480px) {
    .eng-hero {
        min-height: 300px;
        padding: 36px 16px 48px;
    }
    .eng-hero h1 {
        font-size: 26px;
    }
    .eng-hero p {
        font-size: 14px;
    }
    .eng-hero-cta {
        padding: 10px 20px;
        font-size: 13px;
    }
    .eng-cases {
        padding: 40px 16px 40px;
    }
    .eng-cases-header h2 {
        font-size: 26px;
    }
    .eng-case-content h3 {
        font-size: 20px;
    }
    .eng-case-content p {
        font-size: 14px;
    }
    .eng-case-features li {
        font-size: 13px;
    }
    .eng-case-cta {
        padding: 6px 18px;
        font-size: 13px;
    }
    .eng-bottom-cta {
        padding: 40px 16px 48px;
    }
    .eng-bottom-cta-inner h2 {
        font-size: 22px;
    }
    .eng-bottom-cta-inner p {
        font-size: 15px;
    }
    .eng-bottom-btn {
        padding: 12px 28px;
        font-size: 14px;
    }
}

@media (max-width: 360px) {
    .eng-hero h1 {
        font-size: 22px;
    }
    .eng-cases-header h2 {
        font-size: 22px;
    }
}