* {
    box-sizing: border-box;
}

:root {
    --bg: #f5f7f5;
    --surface: rgba(255, 255, 255, 0.88);
    --surface-solid: #ffffff;
    --text: #14213d;
    --heading: #1c1207;
    --muted: #5f6773;
    --border: rgba(20, 33, 61, 0.08);
    --shadow-lg: 0 18px 45px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 10px 28px rgba(0, 0, 0, 0.06);
    --radius-xl: 24px;
    --radius-lg: 18px;
    --radius-pill: 999px;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
    font-size: 16px;
}

a {
    text-decoration: none;
}

img {
    max-width: 100%;
    display: block;
}

.container {
    width: min(1200px, 90%);
    margin: 0 auto;
    padding: 0 20px;
}

/* TOPBAR */
.topbar {
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 14px 0;
    background: transparent;
}

.topbar-inner {
    width: min(1400px, 90%);
    margin: 0 auto;
    background: rgba(245, 245, 245, 0.95);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.45);
    border-radius: var(--radius-pill);
    padding: 16px 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.04);
}

.logo img,
.footer-logo img {
    height: 34px;
    width: auto;
}

.menu {
    display: flex;
    align-items: center;
    gap: 28px;
    flex-wrap: wrap;
}

.menu a {
    color: #222;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.02em;
    transition: opacity 0.25s ease;
}

.menu a:hover {
    opacity: 0.65;
}

.contact-btn {
    padding: 14px 26px;
    border-radius: var(--radius-pill);
    background: #e3e3e3;
    color: #222;
    font-weight: 700;
    transition: transform 0.25s ease, background 0.25s ease;
}

.contact-btn:hover {
    transform: translateY(-1px);
    background: #d8d8d8;
}

/* HERO */
.hero {
    position: relative;
    min-height: 88vh;
    background: url('SBTi.jpg') no-repeat center center/cover;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(90deg, rgba(10, 18, 10, 0.58) 0%, rgba(10, 18, 10, 0.36) 40%, rgba(10, 18, 10, 0.14) 100%);
    z-index: 1;
}

.hero-container {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 46px 20px 72px;
}

.overlay-box {
    max-width: 760px;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.16);
    backdrop-filter: blur(10px);
    padding: 38px;
    border-radius: 28px;
    box-shadow: var(--shadow-lg);
}

.hero-label {
    margin: 0 0 12px;
    font-size: 15px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.92);
    letter-spacing: 0.02em;
}

.overlay-box h1 {
    margin: 0 0 18px;
    color: #ffffff;
    font-size: 50px;
    line-height: 1.03;
    font-weight: 800;
    letter-spacing: -0.03em;
}

.hero-subtext {
    margin: 0 0 28px;
    font-size: 20px;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.9);
    max-width: 680px;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 52px;
    padding: 14px 28px;
    border-radius: var(--radius-pill);
    font-weight: 700;
    font-size: 16px;
    background: #000;
    color: #fff;
    transition: transform 0.25s ease, opacity 0.25s ease;
}

.btn:hover {
    transform: translateY(-2px);
    opacity: 0.94;
}

.btn-dark {
    background: #111;
    color: #fff;
}

/* MAIN CONTENT */
.content-section {
    padding: 96px 0;
}

.section-block {
    margin-bottom: 64px;
}

.content-section h2 {
    margin: 0 0 24px;
    font-size: 34px;
    line-height: 1.1;
    letter-spacing: -0.02em;
    color: var(--heading);
    font-weight: 700;
    text-align: left;
}

.content-section h3 {
    margin: 0 0 20px;
    font-size: 30px;
    line-height: 1.2;
    color: var(--heading);
    font-weight: 600;
    text-align: left;
}

.content-section p,
.content-section li {
    font-size: 16px;
    line-height: 1.7;
    color: var(--text);
    text-align: left;
    max-width: none;
}

.content-section p {
    margin: 0 0 22px;
    text-align: justify;
    text-align-last: left;
}

.content-section ul,
.content-section ol {
    margin: 0;
    padding-left: 24px;
}

.feature-list li {
    margin-bottom: 12px;
}

/* CARDS */
.card-box {
    background: var(--surface-solid);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 36px;
    margin: 36px 0;
    box-shadow: var(--shadow-md);
    text-align: left;
}

.cta-inline {
    margin: 48px 0;
    padding: 28px 32px;
    background: linear-gradient(135deg, #06e6f1ae 0%, #f08008 100%);
    border: 1px solid rgba(41, 94, 50, 0.08);
    border-radius: var(--radius-xl);
}

.cta-inline h3 {
    margin: 0;
    font-size: 18px;
    font-weight: 500;
    line-height: 1.6;
}

.cta-inline a {
    color: var(--heading);
    text-decoration: underline;
    font-weight: 700;
}

/* SCOPE */
.scope-section {
    margin-top: 60px;
}

.scope-section {
    margin-top: 60px;
}

.scope-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 26px;
    padding: 42px;
    border-radius: 24px;
    background: linear-gradient(135deg, #2f7d32 0%, #48b851 100%);
    box-shadow: var(--shadow-md);
}

.scope-card {
    background: #f3f3f3;
    border-radius: 24px;
    padding: 34px 28px;
    text-align: center;
    font-size: 18px;
    line-height: 1.7;
    color: #5c7d4f;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
    min-height: 140px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.scope-card:hover {
    transform: translateY(-4px);
    transition: 0.25s ease;
}

@media (max-width: 768px) {
    .scope-grid {
        grid-template-columns: 1fr;
        padding: 24px;
    }

    .scope-card {
        min-height: auto;
        padding: 26px 20px;
        font-size: 16px;
    }
}


/* TARGET SECTION */
.target-section {
    margin-top: 70px;
}

.target-step {
    margin-bottom: 32px;
    padding: 32px;
    background: var(--surface-solid);
    border: 1px solid var(--border);
    border-radius: 22px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.045);
}

.target-step h3 {
    margin-bottom: 10px;
    font-size: 28px;
}

.center-btn-wrap {
    text-align: center;
    margin: 38px 0 10px;
}

/* FAQ */
.faq-section {
    margin-top: 70px;
}

.faq-item {
    background: var(--surface-solid);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 28px 32px;
    margin-bottom: 20px;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.045);
}

.faq-item summary {
    cursor: pointer;
    font-size: 18px;
    font-weight: 700;
    color: var(--heading);
    list-style: none;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item p {
    margin-top: 14px;
}

/* OTHER SERVICES */
.other-services {
    padding: 100px 0;
    background: #efefef;
}

.section-head h2 {
    font-size: 44px;
    margin: 0 0 32px;
    color: var(--heading);
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    align-items: stretch;
}

.service-card {
    overflow: hidden;
    border-radius: 16px;
    background: #fff;
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.service-card img {
    width: 100%;
    height: 380px;
    object-fit: cover;
    transition: transform 0.35s ease;
    flex-shrink: 0;
}

.service-card:hover img {
    transform: scale(1.03);
}

/* NEWSLETTER */
.newsletter-section {
    padding: 100px 0;
    background: #f7f7f7;
}

.newsletter-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 64px;
    align-items: center;
}

.newsletter-content h2 {
    font-size: 50px;
    line-height: 1.08;
    letter-spacing: -0.03em;
    margin: 0 0 20px;
    color: var(--heading);
}

.newsletter-content p {
    font-size: 19px;
    line-height: 1.7;
    color: var(--text);
}

.newsletter-form {
    margin-top: 28px;
}

.newsletter-form input,
.newsletter-form textarea {
    width: 100%;
    padding: 18px 0;
    border: none;
    border-bottom: 1px solid #d8d8d8;
    background: transparent;
    font-size: 18px;
    color: #222;
    margin-bottom: 18px;
    outline: none;
}

.newsletter-form textarea {
    min-height: 120px;
    resize: vertical;
}

.checkbox-row {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 16px;
    margin: 18px 0 18px;
    color: #333;
}

.join-btn {
    border: none;
    border-radius: var(--radius-pill);
    background: #201008;
    color: #fff;
    font-size: 20px;
    font-weight: 700;
    padding: 18px 34px;
    cursor: pointer;
    transition: transform 0.25s ease, opacity 0.25s ease;
}

.join-btn:hover {
    transform: translateY(-2px);
    opacity: 0.94;
}

.newsletter-image {
    width: 100%;
    border-radius: 18px;
    object-fit: cover;
    box-shadow: var(--shadow-md);
}

/* FOOTER */
.site-footer {
    background: #000;
    color: #fff;
    padding: 76px 0 28px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.3fr 1fr 0.9fr 0.8fr;
    gap: 48px;
    align-items: start;
}

.site-footer h4 {
    font-size: 20px;
    margin: 0 0 18px;
    color: #fff;
}

.footer-subhead {
    margin-top: 28px !important;
}

.site-footer p,
.site-footer a {
    color: rgba(255, 255, 255, 0.88);
    font-size: 16px;
    line-height: 1.8;
}

.site-footer a {
    display: block;
    margin-bottom: 10px;
}

.footer-bottom {
    width: min(1200px, 90%);
    margin: 40px auto 0;
    padding: 24px 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    text-align: center;
    color: rgba(255, 255, 255, 0.78);
    font-size: 15px;
}

/* RESPONSIVE */
@media (max-width: 1100px) {
    .menu {
        display: none;
    }

    .service-grid,
    .newsletter-grid,
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .service-card img {
        height: 320px;
    }

    .topbar-inner {
        padding: 14px 20px;
        gap: 20px;
    }

    .content-section {
        padding: 80px 0;
    }

    .other-services,
    .newsletter-section {
        padding: 80px 0;
    }
}

@media (max-width: 768px) {
    .hero {
        min-height: 75vh;
    }

    .hero-container {
        padding: 20px 0 48px;
    }

    .overlay-box {
        padding: 28px 24px;
        border-radius: 20px;
    }

    .overlay-box h1 {
        font-size: 32px;
        line-height: 1.1;
    }

    .hero-subtext {
        font-size: 18px;
        line-height: 1.6;
    }

    .content-section {
        padding: 60px 0;
    }

    .section-block {
        margin-bottom: 48px;
    }

    .content-section h2 {
        font-size: 32px;
        line-height: 1.2;
        margin-bottom: 20px;
    }

    .content-section h3 {
        font-size: 24px;
        margin-bottom: 16px;
    }

    .content-section p,
    .content-section li,
    .faq-item summary,
    .newsletter-content p {
        font-size: 16px;
        line-height: 1.6;
    }

    .content-section p {
        margin-bottom: 20px;
        text-align: left;
    }

    .card-box {
        padding: 28px 24px;
        margin: 28px 0;
    }

    .target-step {
        padding: 24px;
        margin-bottom: 24px;
    }

    .target-step h3 {
        font-size: 20px;
    }

    .faq-item {
        padding: 20px 24px;
        margin-bottom: 16px;
    }

    .faq-item summary {
        font-size: 16px;
    }

    .other-services,
    .newsletter-section {
        padding: 60px 0;
    }

    .section-head h2 {
        font-size: 32px;
        margin-bottom: 24px;
    }

    .service-grid {
        gap: 24px;
    }

    .service-card img {
        height: 240px;
    }

    .newsletter-content h2 {
        font-size: 36px;
        line-height: 1.2;
        margin-bottom: 16px;
    }

    .newsletter-grid {
        gap: 40px;
    }

    .newsletter-form input,
    .newsletter-form textarea {
        font-size: 16px;
        padding: 16px 0;
        margin-bottom: 16px;
    }

    .join-btn {
        padding: 16px 28px;
        font-size: 18px;
    }

    .site-footer {
        padding: 60px 0 24px;
    }

    .footer-grid {
        gap: 32px;
    }

    .site-footer h4 {
        font-size: 18px;
        margin-bottom: 16px;
    }

    .site-footer p,
    .site-footer a {
        font-size: 15px;
        line-height: 1.6;
    }

    .contact-btn {
        padding: 10px 18px;
        font-size: 14px;
    }

    .logo img,
    .footer-logo img {
        height: 28px;
    }

    .btn {
        min-height: 48px;
        padding: 12px 24px;
        font-size: 15px;
    }
}