:root {
    --navy: #033631;
    --navy-2: #054840;
    --gold: #bf9b42;
    --gold-2: #d8b65d;
    --cream: #faf8f2;
    --border: #efe6cf;
    --text: #1f2937;
    --muted: #6b7280;
    --white: #fff;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 88px;
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--text);
    background: #fff;
    overflow-x: hidden;
}

a {
    text-decoration: none;
}

section {
    padding: 90px 0;
}

.container {
    max-width: 1180px;
}

.btn-gold {
    background: linear-gradient(135deg, var(--gold), var(--gold-2));
    color: #fff;
    padding: 13px 24px;
    border-radius: 999px;
    font-weight: 800;
    border: none;
    box-shadow: 0 14px 30px rgba(191, 155, 66, .28);
    transition: .3s;
}

.btn-gold:hover {
    color: #fff;
    transform: translateY(-3px);
    box-shadow: 0 20px 40px rgba(191, 155, 66, .38);
}

.solution-hero {
    position: relative;
    min-height: calc(100vh - 72px);
    display: flex;
    align-items: center;
    padding-top: 120px;
    padding-bottom: 80px;
    color: #fff;
    overflow: hidden;
    background:
        radial-gradient(circle at 82% 20%, rgba(216, 182, 93, .25), transparent 30%),
        linear-gradient(90deg, rgba(0, 38, 34, .98) 0%, rgba(0, 38, 34, .86) 42%, rgba(0, 38, 34, .45) 100%),
        url("../image/ho-tro-boi-thuong.jpg") center/cover no-repeat;
}

.solution-hero .container {
    position: relative;
    z-index: 2;
}

.hero-content h1 {
    max-width: 760px;
    font-size: clamp(34px, 4.8vw, 52px);
    line-height: 1.05;
    font-weight: 900;
    letter-spacing: -1.8px;
    margin-bottom: 24px;
    text-transform: uppercase;
}

.hero-content h1 span,
.hero-content h1 strong {
    display: block;
}

.hero-content h1 strong {
    color: var(--gold-2);
}

.hero-desc {
    max-width: 680px;
    font-size: 18px;
    line-height: 1.7;
    font-weight: 700;
    color: #fff;
    margin-bottom: 18px;
}

.hero-desc span {
    color: var(--gold-2);
}

.hero-sub-desc {
    max-width: 690px;
    color: rgba(255, 255, 255, .84);
    font-size: 15.5px;
    line-height: 1.85;
    margin-bottom: 0;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 30px;
}

.custom-outline-btn {
    border-radius: 999px;
    padding: 13px 24px;
    font-weight: 800;
    border: 1px solid rgba(255, 255, 255, .38);
    color: #fff;
    background: rgba(255, 255, 255, .08);
    backdrop-filter: blur(10px);
}

.custom-outline-btn:hover {
    color: var(--gold-2);
    border-color: var(--gold-2);
}

.floating-badge {
    position: absolute;
    top: 42px;
    left: 36px;
    width: 110px;
    height: 110px;
    border-radius: 34px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(3, 54, 49, .7);
    border: 1px solid rgba(216, 182, 93, .55);
    color: var(--gold-2);
    font-size: 34px;
    font-weight: 900;
}

.process-section {
    background: #fff;
}

.section-title {
    font-size: clamp(28px, 3.2vw, 44px);
    font-weight: 900;
    color: var(--navy);
    letter-spacing: -1.2px;
    line-height: 1.15;
    text-transform: uppercase;
}

.process-card {
    height: 100%;
    position: relative;
    background: #fff;
    border: 1px solid rgba(191, 155, 66, .2);
    border-radius: 28px;
    padding: 34px 28px 32px;
    box-shadow: 0 18px 45px rgba(15, 23, 42, .07);
    transition: .35s ease;
    overflow: hidden;
}

.process-card:hover {
    transform: translateY(-8px);
    border-color: rgba(191, 155, 66, .45);
    box-shadow: 0 28px 70px rgba(191, 155, 66, .16);
}

.step-number {
    position: absolute;
    top: 26px;
    right: 26px;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: var(--navy);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    font-size: 13px;
}

.process-icon {
    width: 74px;
    height: 74px;
    border-radius: 24px;
    background: linear-gradient(135deg, var(--navy), var(--navy-2));
    color: var(--gold-2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    margin-bottom: 22px;
}

.process-card h3 {
    color: var(--navy);
    font-size: 22px;
    font-weight: 900;
    margin-bottom: 14px;
}

.process-card p {
    color: var(--muted);
    line-height: 1.75;
    margin: 0;
}

.ecosystem-section {
    background:
        radial-gradient(circle at 8% 18%, rgba(216, 182, 93, .16), transparent 26%),
        linear-gradient(180deg, #fffdf8, var(--cream));
}

.eco-title {
    font-size: clamp(38px, 5vw, 48px);
    font-weight: 900;
    letter-spacing: -2px;
    line-height: 1.05;
    color: #033631;
    margin-bottom: 18px;
}

.eco-title .text-gold {
    background: linear-gradient(135deg, #bf9b42, #f3d37c, #bf9b42);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.eco-deco {
    color: var(--gold);
    font-size: 35px;
    opacity: .85;
}

.eco-intro {
    max-width: 820px;
    margin: 0 auto;
    text-align: center;
    font-size: clamp(14px, 1.4vw, 16px);
    line-height: 1.75;
    color: #4b5563;
}

.ecosystem-tabs {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 34px;
}

.tab-btn {
    border: 1px solid rgba(191, 155, 66, .28);
    background: #fff;
    color: var(--navy);
    padding: 12px 20px;
    border-radius: 999px;
    font-weight: 800;
    transition: .3s ease;
}

.tab-btn:hover,
.tab-btn.active {
    background: linear-gradient(135deg, var(--navy), var(--navy-2));
    color: #fff;
    border-color: transparent;
    box-shadow: 0 16px 34px rgba(3, 54, 49, .18);
}

.tab-content-wrapper {
    background: #fff;
    border: 1px solid rgba(191, 155, 66, .22);
    border-radius: 38px;
    padding: 42px;
    box-shadow: 0 30px 80px rgba(15, 23, 42, .08);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.video-card {
    position: relative;
    height: 390px;
    border-radius: 30px;
    overflow: hidden;
    box-shadow: 0 24px 54px rgba(15, 23, 42, .16);
    background: #e9dfca;
}

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

.play-btn {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 78px;
    height: 78px;
    border-radius: 50%;
    border: none;
    background: rgba(3, 54, 49, .88);
    color: #fff;
    font-size: 26px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 20px 40px rgba(0, 0, 0, .28);
}

.solution-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 22px;
    border-radius: 999px;
    border: 1px solid #d8b65d;
    color: #d8b65d;
    font-size: 13px;
    font-weight: 800;
    text-transform: uppercase;
    margin-bottom: 18px;
}

.content-box h3 {
    color: var(--navy);
    font-weight: 900;
    font-size: 24px;
    margin-bottom: 12px;
}

.content-box p {
    color: var(--muted);
    line-height: 1.75;
    margin-bottom: 0;
}

.solution-list,
.benefit-box {
    margin-top: 22px;
    padding: 24px;
    border-radius: 24px;
    background: #fffaf0;
    border: 1px solid rgba(191, 155, 66, .22);
}

.solution-list h4,
.benefit-box h4 {
    color: var(--navy);
    font-size: 18px;
    font-weight: 900;
    margin-bottom: 14px;
}

.solution-list ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.solution-list li {
    position: relative;
    padding-left: 28px;
    margin-bottom: 10px;
    color: #4b5563;
    line-height: 1.6;
}

.solution-list li::before {
    content: "\f00c";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    position: absolute;
    left: 0;
    top: 1px;
    color: var(--gold);
    font-size: 13px;
}

@media(max-width: 991px) {
    section {
        padding: 72px 0;
    }

    .solution-hero {
        min-height: auto;
        padding-top: 110px;
    }

    .tab-content-wrapper {
        padding: 28px;
    }

    .video-card {
        height: 320px;
    }
}

@media(max-width: 576px) {
    .hero-actions {
        flex-direction: column;
    }

    .hero-actions .btn {
        width: 100%;
    }

    .floating-badge {
        width: 84px;
        height: 84px;
        font-size: 26px;
        border-radius: 26px;
    }

    .tab-content-wrapper {
        border-radius: 28px;
        padding: 22px;
    }
}