:root {
    --main-color: linear-gradient(to right, #2b1404, #976017);

    --text-color: #eef5ea;
    --title-color: #976017;
    --button-color: #e9d3b4;
    --border-color: #d8b98a;
}

/* =========================
       HERO
    ========================= */

.introduce-hero {
    background: var(--main-color);
    color: var(--text-color);
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}

.introduce-hero::before {
    content: "";
    position: absolute;
    width: 450px;
    height: 450px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    top: -200px;
    right: -100px;
}

.introduce-hero::after {
    content: "";
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.04);
    bottom: -150px;
    left: -100px;
}

.introduce-hero-content {
    position: relative;
    z-index: 2;
}

.introduce-badge {
    display: inline-block;
    padding: 8px 18px;
    border: 1px solid var(--border-color);
    border-radius: 50px;
    color: var(--button-color);
    font-size: 14px;
    margin-bottom: 20px;
}

.introduce-hero h1 {
    font-size: 52px;
    line-height: 1.2;
    font-weight: 800;
    margin-bottom: 25px;
}

.introduce-hero h1 span {
    color: var(--button-color);
}

.introduce-hero p {
    max-width: 700px;
    font-size: 18px;
    line-height: 1.8;
    color: rgba(238, 245, 234, 0.85);
}

/* =========================
       ABOUT
    ========================= */

.about-section {
    padding: 90px 0;
    background: #fff;
}

.about-image {
    min-height: 400px;
    border-radius: 20px;
    background: var(--main-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--button-color);
    overflow: hidden;
}

.about-image i {
    font-size: 120px;
}

.about-content h2 {
    color: var(--title-color);
    font-weight: 800;
    margin-bottom: 20px;
}

.about-content p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 15px;
}

/* =========================
       VALUES
    ========================= */

.values-section {
    padding: 90px 0;
    background: #f8f6f3;
}

.section-title {
    color: var(--title-color);
    font-weight: 800;
}

.section-description {
    max-width: 650px;
    margin: 0 auto;
    color: #666;
    line-height: 1.7;
}

.value-card {
    height: 100%;
    padding: 35px 30px;
    background: #fff;
    border: 1px solid #eee;
    border-radius: 15px;
    transition: 0.3s ease;
}

.value-card:hover {
    transform: translateY(-5px);
    border-color: var(--border-color);
    box-shadow: 0 10px 30px rgba(43, 20, 4, 0.1);
}

.value-icon {
    width: 65px;
    height: 65px;
    border-radius: 12px;
    background: var(--main-color);
    color: var(--button-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin-bottom: 20px;
}

.value-card h4 {
    color: #2b1404;
    font-weight: 700;
    margin-bottom: 15px;
}

.value-card p {
    color: #666;
    line-height: 1.7;
    margin-bottom: 0;
}

/* =========================
       PROCESS
    ========================= */

.process-section {
    padding: 90px 0;
    background: #fff;
}

.process-number {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    border-radius: 50%;
    background: var(--main-color);
    color: var(--button-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    font-weight: 700;
}

.process-card {
    text-align: center;
    padding: 20px;
}

.process-card h5 {
    color: #2b1404;
    font-weight: 700;
    margin-bottom: 12px;
}

.process-card p {
    color: #666;
    line-height: 1.7;
    margin-bottom: 0;
}

/* =========================
       TECHNOLOGY
    ========================= */

.technology-section {
    padding: 90px 0;
    background: #f8f6f3;
}

.technology-box {
    background: var(--main-color);
    border-radius: 20px;
    padding: 55px 40px;
    color: var(--text-color);
}

.technology-box h2 {
    font-weight: 800;
    margin-bottom: 20px;
}

.technology-box p {
    color: rgba(238, 245, 234, 0.85);
    line-height: 1.8;
}

.technology-item {
    padding: 18px;
    border: 1px solid rgba(216, 185, 138, 0.4);
    border-radius: 10px;
    text-align: center;
    height: 100%;
}

.technology-item i {
    font-size: 28px;
    color: var(--button-color);
    margin-bottom: 10px;
}

.technology-item h6 {
    margin: 0;
    font-weight: 600;
}

/* =========================
       CTA
    ========================= */

.introduce-cta {
    padding: 90px 0;
}

.cta-box {
    background: var(--main-color);
    color: var(--text-color);
    border-radius: 20px;
    padding: 60px 40px;
    text-align: center;
}

.cta-box h2 {
    font-weight: 800;
    margin-bottom: 15px;
}

.cta-box p {
    max-width: 650px;
    margin: 0 auto 30px;
    color: rgba(238, 245, 234, 0.85);
    line-height: 1.7;
}

.btn-main {
    background: var(--button-color);
    color: #2b1404;
    border: none;
    padding: 12px 25px;
    font-weight: 600;
    border-radius: 8px;
}

.btn-main:hover {
    background: #fff;
    color: #2b1404;
}

/* =========================
       RESPONSIVE
    ========================= */

@media (max-width: 991px) {
    .introduce-hero h1 {
        font-size: 44px;
    }

    .about-image {
        min-height: 320px;
    }
}

@media (max-width: 767px) {
    .introduce-hero {
        padding: 70px 0;
        text-align: center;
    }

    .introduce-hero h1 {
        font-size: 34px;
    }

    .introduce-hero p {
        font-size: 16px;
        margin-left: auto;
        margin-right: auto;
    }

    .about-section,
    .values-section,
    .process-section,
    .technology-section,
    .introduce-cta {
        padding: 60px 0;
    }

    .about-image {
        min-height: 250px;
    }

    .about-image i {
        font-size: 80px;
    }

    .technology-box {
        padding: 40px 25px;
    }

    .cta-box {
        padding: 45px 25px;
    }

    .cta-box h2 {
        font-size: 28px;
    }
}

/* =====================================================
   INTRODUCE PAGE
   SCROLL REVEAL ANIMATION
===================================================== */

.reveal {
    opacity: 0;

    transform: translateY(40px);

    transition:
        opacity 0.7s ease,
        transform 0.7s ease;
}

/* Khi phần tử xuất hiện */

.reveal.active {
    opacity: 1;

    transform: translateY(0);
}

/* =====================================================
   HERO LOAD ANIMATION
   Hiện từ trái sang phải
===================================================== */

.reveal-load {
    opacity: 0;

    transform: translateX(-40px);

    transition:
        opacity 0.8s ease,
        transform 0.8s ease;
}

/* Khi animation bắt đầu */

.reveal-load.active {
    opacity: 1;

    transform: translateX(0);
}

/* =====================================================
   ACCESSIBILITY
   Nếu người dùng bật Reduce Motion
===================================================== */

@media (prefers-reduced-motion: reduce) {
    .reveal,
    .reveal-load {
        opacity: 1;

        transform: none;

        transition: none;
    }
}