/* ========== RESET & BASE ========== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --c-primary: #003BBB;
    --c-primary-dark: #0F2A5F;
    --c-bg: #F7F3EA;
    --c-bg-soft: #FBF8F1;
    --c-text: #6B7280;
    --c-text-dark: #1F2937;
    --c-accent: #E94E1B;
    --c-accent-soft: #FCE3D4;
    --c-white: #ffffff;
    --c-border: #EAE4D5;
    --c-border-soft: #EFE9DA;

    --shadow-xs: 0 1px 2px rgba(15, 42, 95, 0.04);
    --shadow-sm: 0 2px 8px rgba(15, 42, 95, 0.05);
    --shadow-md: 0 8px 24px rgba(15, 42, 95, 0.08);
    --shadow-lg: 0 20px 40px rgba(15, 42, 95, 0.10);

    --radius-sm: 12px;
    --radius-md: 16px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --radius-2xl: 36px;

    --font: 'IBM Plex Sans Thai', system-ui, -apple-system, 'Segoe UI', sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html { scroll-behavior: smooth; }

body {
    font-family: var(--font);
    background: var(--c-bg);
    color: var(--c-text);
    line-height: 1.6;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

.container {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 32px;
}

/* ========== TYPOGRAPHY ========== */
h1, h2, h3, h4 { color: var(--c-primary-dark); font-weight: 700; line-height: 1.3; }
.accent { color: var(--c-accent); }

/* ========== BUTTONS ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 30px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 15px;
    transition: var(--transition);
    white-space: nowrap;
    cursor: pointer;
    border: 2px solid transparent;
    font-family: inherit;
}
.btn-primary {
    background: var(--c-accent);
    color: white;
    box-shadow: 0 4px 12px rgba(233, 78, 27, 0.28);
}
.btn-primary:hover {
    background: #cc3f15;
    transform: translateY(-1px);
    box-shadow: 0 8px 20px rgba(233, 78, 27, 0.38);
}
.btn-outline {
    background: transparent;
    color: var(--c-accent);
    border-color: var(--c-accent);
}
.btn-outline:hover {
    background: var(--c-accent);
    color: white;
}
.btn-sm { padding: 11px 22px; font-size: 14px; }
.btn-lg { padding: 16px 36px; font-size: 16px; }
.btn-block { width: 100%; }

/* ========== 1. HEADER ========== */
.header {
    position: sticky;
    top: 16px;
    z-index: 100;
    padding: 0 24px;
    margin-top: 16px;
}
.header-card {
    max-width: 1240px;
    margin: 0 auto;
    background: white;
    border-radius: 20px;
    padding: 8px 24px 8px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    box-shadow: 0 4px 20px rgba(15, 42, 95, 0.06);
    border: 1px solid rgba(234, 228, 213, 0.6);
}
.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-img {
    height: 76px;
    width: auto;
    display: block;
    object-fit: contain;
}
.footer-brand .logo-img {
    height: 110px;
    margin-bottom: 6px;
}

.nav { display: flex; gap: 36px; }
.nav-link {
    color: #1F2937;
    font-weight: 500;
    font-size: 15px;
    position: relative;
    padding: 8px 0;
    transition: var(--transition);
}
.nav-link:hover { color: var(--c-primary); }
.nav-link.active { color: var(--c-primary); font-weight: 600; }
.nav-link.active::after {
    content: "";
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 28px;
    height: 2.5px;
    background: var(--c-primary);
    border-radius: 2px;
}

.menu-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--c-primary-dark);
    border-radius: 2px;
    transition: var(--transition);
}

/* ========== 2. HERO ========== */
.hero {
    padding: 16px 16px 0;
}
.hero-card {
    max-width: 1600px;
    margin: 0 auto;
    background: var(--c-bg-soft);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    align-items: center;
    min-height: 520px;
    border: 1px solid var(--c-border-soft);
    box-shadow: var(--shadow-sm);
    position: relative;
}
.hero-text {
    padding: 70px 40px 110px 72px;
    z-index: 2;
}
.hero-title {
    font-size: clamp(24px, 2.5vw, 36px);
    font-weight: 800;
    line-height: 1.25;
    color: var(--c-primary-dark);
    margin-bottom: 22px;
    letter-spacing: -0.01em;
}
.hero-sub {
    font-size: 16px;
    line-height: 1.75;
    color: #6B7280;
    margin-bottom: 36px;
    max-width: 520px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-image {
    position: relative;
    height: 100%;
    min-height: 520px;
    overflow: hidden;
}
.hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.hero-image-fade {
    position: absolute;
    inset: 0;
    background: linear-gradient(to right, var(--c-bg-soft) 0%, rgba(251,248,241,0.4) 10%, transparent 24%);
    pointer-events: none;
}

/* ========== 3. BENEFIT CARDS ========== */
.benefits-section {
    padding: 0 16px 70px;
    margin-top: -90px;
    position: relative;
    z-index: 5;
}
.benefits-section .container {
    max-width: 1600px;
    padding: 0;
}
.benefits {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.benefit-card {
    background: white;
    border: 1px solid var(--c-border-soft);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-xs);
    transition: var(--transition);
    display: flex;
    align-items: flex-start;
    gap: 16px;
}
.benefit-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}
.benefit-icon {
    width: 52px;
    height: 52px;
    background: var(--c-accent-soft);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--c-primary);
    flex-shrink: 0;
}
.benefit-icon svg { width: 26px; height: 26px; }
.benefit-text h3 {
    font-size: 16px;
    margin-bottom: 8px;
    font-weight: 700;
}
.benefit-text p {
    font-size: 13.5px;
    line-height: 1.65;
    color: var(--c-text);
}

/* ========== SECTIONS ========== */
.section { padding: 80px 0; }

.section-head {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 48px;
}
.eyebrow {
    display: inline-block;
    color: var(--c-accent);
    font-weight: 600;
    font-size: 15px;
    margin-bottom: 10px;
}
.section-title {
    font-size: clamp(28px, 3.4vw, 40px);
    font-weight: 700;
    margin-bottom: 0;
    letter-spacing: -0.01em;
    color: var(--c-primary-dark);
}
.section-sub {
    font-size: 16px;
    line-height: 1.7;
    color: var(--c-text);
    margin-top: 14px;
}

/* ========== 4. SERVICES ========== */
.services-section {
    padding-top: 0;
    padding-bottom: 80px;
}
.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.service-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--c-border-soft);
    box-shadow: var(--shadow-xs);
    transition: var(--transition);
    position: relative;
}
.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}
.service-img {
    aspect-ratio: 16 / 11;
    overflow: hidden;
}
.service-img img {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}
.service-card:hover .service-img img { transform: scale(1.06); }
.service-card { display: flex; flex-direction: column; }
.service-img { position: relative; }
.service-body { padding: 24px 24px 28px; }
.service-body h3 { font-size: 19px; margin-bottom: 12px; font-weight: 700; }
.service-body p { font-size: 14px; line-height: 1.7; color: var(--c-text); }

/* ========== 5. PORTFOLIO ========== */
.portfolio-section {
    padding-top: 0;
    padding-bottom: 70px;
}
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
    margin-bottom: 8px;
    row-gap: 32px;
}
.portfolio-item-image-only .portfolio-img {
    margin-bottom: 0;
}
.portfolio-item {
    text-align: center;
    align-self: start;
}
.portfolio-img {
    aspect-ratio: 1 / 1;
    overflow: hidden;
    border-radius: var(--radius-lg);
    margin-bottom: 16px;
    border: 1px solid var(--c-border-soft);
    box-shadow: var(--shadow-xs);
    transition: var(--transition);
}
.portfolio-item:hover .portfolio-img {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}
.portfolio-img img {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}
.portfolio-item:hover .portfolio-img img {
    transform: scale(1.05);
}
.portfolio-caption {
    font-size: 14.5px;
    color: var(--c-text-dark);
    font-weight: 500;
}
.portfolio-title {
    font-size: 16px;
    color: var(--c-primary-dark);
    font-weight: 700;
    margin-bottom: 8px;
    text-align: center;
}
.portfolio-desc {
    font-size: 13.5px;
    color: var(--c-text);
    line-height: 1.65;
    text-align: center;
    padding: 0 8px;
}
.portfolio-cta {
    text-align: center;
    margin-top: 8px;
}

/* ========== 6. STATS / TRUST ========== */
.stats-section {
    padding: 30px 0 70px;
}
.stats-card {
    background: white;
    border: 1px solid var(--c-border-soft);
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 16px;
    box-shadow: var(--shadow-xs);
}
.stat {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0 6px;
    border-right: 1px solid var(--c-border-soft);
}
.stat:last-child { border-right: none; }
.stat-icon {
    width: 44px; height: 44px;
    background: var(--c-accent-soft);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    color: var(--c-primary);
    flex-shrink: 0;
}
.stat-icon svg { width: 22px; height: 22px; }
.stat-num {
    font-size: 18px;
    font-weight: 700;
    color: var(--c-primary-dark);
    line-height: 1.15;
    letter-spacing: -0.01em;
}
.stat-label {
    font-size: 12.5px;
    color: var(--c-text);
    margin-top: 4px;
    line-height: 1.4;
}

/* ========== 7. CTA BANNER ========== */
.cta-section {
    padding: 30px 0 80px;
}
.cta-card {
    background: var(--c-bg-soft);
    border: 1px solid var(--c-border-soft);
    border-radius: var(--radius-xl);
    padding: 56px 60px;
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 40px;
    align-items: center;
    position: relative;
    overflow: hidden;
}
.cta-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(15, 42, 95, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(15, 42, 95, 0.04) 1px, transparent 1px);
    background-size: 30px 30px;
    pointer-events: none;
    opacity: 0.6;
}
.cta-text { position: relative; z-index: 1; }
.cta-text h2 {
    font-size: clamp(24px, 2.8vw, 34px);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 18px;
    color: var(--c-primary-dark);
    letter-spacing: -0.01em;
}
.cta-text p {
    font-size: 15px;
    line-height: 1.75;
    color: var(--c-text);
}
.cta-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
    position: relative;
    z-index: 1;
}

/* ========== 8. FOOTER ========== */
.footer {
    background: var(--c-bg);
    padding: 60px 0 0;
    border-top: 1px solid var(--c-border-soft);
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1.1fr 1.4fr;
    gap: 40px;
    padding-bottom: 50px;
}
.footer-brand p {
    line-height: 1.75;
    font-size: 14px;
    margin-top: 16px;
    color: var(--c-text);
}
.footer-col h4 {
    color: var(--c-primary-dark);
    font-size: 16px;
    margin-bottom: 18px;
    font-weight: 700;
}
.footer-col ul li {
    margin-bottom: 12px;
    font-size: 14.5px;
    color: var(--c-text);
}
.footer-col a {
    transition: var(--transition);
    color: var(--c-text);
}
.footer-col a:hover { color: var(--c-accent); }

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}
.footer-contact svg {
    width: 18px;
    height: 18px;
    color: var(--c-accent);
    flex-shrink: 0;
    margin-top: 3px;
}
.footer-contact span {
    line-height: 1.6;
}

.footer-bottom {
    border-top: 1px solid var(--c-border-soft);
    padding: 22px 0;
    text-align: center;
    font-size: 13.5px;
    color: var(--c-text);
}

/* ========== RESPONSIVE ========== */
@media (max-width: 1100px) {
    .nav { gap: 24px; }
    .hero-text { padding: 60px 40px; }
}

@media (max-width: 1024px) {
    .benefits { grid-template-columns: repeat(2, 1fr); }
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .portfolio-grid { grid-template-columns: repeat(3, 1fr); }
    .stats-card { grid-template-columns: repeat(3, 1fr); gap: 24px 16px; }
    .stat { border-right: 1px solid var(--c-border-soft); }
    .stat:nth-child(3n) { border-right: none; }
    .stat:nth-child(-n+3) { border-bottom: 1px solid var(--c-border-soft); padding-bottom: 18px; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .hero-card { grid-template-columns: 1fr; min-height: auto; }
    .hero-text { padding: 56px 40px 70px 40px; }
    .hero-image { min-height: 320px; }
    .hero-image-fade { background: linear-gradient(to bottom, var(--c-bg-soft), transparent 20%); }
    .benefits-section { margin-top: -50px; padding: 0 16px 50px; }
    .cta-card { grid-template-columns: 1fr; padding: 44px 36px; }
    .cta-actions { flex-direction: row; }
}

@media (max-width: 768px) {
    .container { padding: 0 20px; }
    .header { padding: 0 16px; }
    .header-card { padding: 6px 14px 6px 16px; }
    .logo-img { height: 56px; }
    .footer-brand .logo-img { height: 88px; }
    .menu-toggle { display: flex; }
    .nav {
        position: absolute;
        top: calc(100% + 8px); left: 16px; right: 16px;
        background: white;
        border-radius: var(--radius-md);
        flex-direction: column;
        gap: 0;
        padding: 0;
        box-shadow: var(--shadow-md);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease, padding 0.3s ease;
    }
    .nav.is-open { max-height: 400px; padding: 8px 20px; }
    .nav-link {
        padding: 14px 0;
        border-bottom: 1px solid var(--c-border-soft);
        width: 100%;
        text-align: center;
    }
    .nav-link:last-child { border-bottom: none; }
    .nav-link.active::after { display: none; }
    .header-card .btn-sm { display: none; }

    .hero { padding: 20px 16px 0; }
    .hero-text { padding: 36px 24px 30px; }
    .hero-title { font-size: 24px; }
    .benefits-section { margin-top: 30px; padding: 0 16px 40px; }

    .benefits-section { padding: 50px 0 60px; }
    .benefits { grid-template-columns: 1fr; }
    .section { padding: 60px 0; }

    .services-grid { grid-template-columns: 1fr; }
    .portfolio-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; row-gap: 24px; }

    .stats-card { grid-template-columns: 1fr; padding: 22px; }
    .stat {
        border-right: none !important;
        border-bottom: 1px solid var(--c-border-soft);
        padding-bottom: 16px;
    }
    .stat:last-child { border-bottom: none; padding-bottom: 0; }

    .cta-card { padding: 36px 24px; }
    .cta-actions { flex-direction: column; }

    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .footer { padding-top: 50px; }
}

@media (max-width: 480px) {
    .hero-actions { flex-direction: column; align-items: stretch; }
    .hero-actions .btn { width: 100%; }
    .portfolio-grid { grid-template-columns: 1fr; }
}