:root {
    --black: #050505;
    --black-soft: #101010;
    --black-card: #151515;
    --gold: #ffd400;
    --gold-deep: #d8a800;
    --white: #ffffff;
    --muted: #c9c9c9;
    --light: #f5f5f5;
    --border: rgba(255, 212, 0, 0.22);
    --shadow: 0 24px 70px rgba(0, 0, 0, 0.35);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: "Inter", Arial, sans-serif;
    color: var(--white);
    background: var(--black);
    line-height: 1.6;
}

body.menu-open {
    overflow: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

img, iframe {
    max-width: 100%;
}

.container {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
}

.section {
    padding: 96px 0;
    background: var(--light);
    color: #171717;
}

.section-dark {
    position: relative;
    padding: 96px 0;
    background: radial-gradient(circle at top left, rgba(255, 212, 0, 0.12), transparent 30%), linear-gradient(135deg, #050505 0%, #111 55%, #040404 100%);
    overflow: hidden;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(5, 5, 5, 0.84);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.navbar {
    min-height: 78px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-weight: 800;
}

.brand-mark {
    width: 48px;
    height: 48px;
    display: grid;
    place-items: center;
    border-radius: 15px;
    overflow: hidden;
    background: transparent;
    box-shadow: 0 0 28px rgba(255, 212, 0, 0.36);
}

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

.brand small {
    display: block;
    color: var(--gold);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 22px;
    color: #eeeeee;
    font-weight: 600;
}

.nav-menu a:not(.header-cta) {
    transition: color 0.25s ease;
}

.nav-menu a:not(.header-cta):hover {
    color: var(--gold);
}

.header-cta, .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 0;
    border-radius: 999px;
    min-height: 46px;
    padding: 12px 22px;
    font-weight: 800;
    cursor: pointer;
    transition: transform 0.25s ease, box-shadow 0.25s ease, background-position 0.35s ease;
}

.header-cta, .btn-primary {
    color: #070707;
    background: linear-gradient(120deg, var(--gold), #fff27a, #0c0c0c, var(--gold));
    background-size: 260% 100%;
    box-shadow: 0 10px 30px rgba(255, 212, 0, 0.28);
}

.header-cta:hover, .btn-primary:hover {
    color: var(--white);
    background-position: 100% 0;
    transform: translateY(-2px);
}

.btn-outline {
    border: 1px solid var(--border);
    color: var(--white);
    background: rgba(255, 255, 255, 0.06);
}

.btn-outline:hover {
    box-shadow: 0 0 30px rgba(255, 212, 0, 0.18);
    transform: translateY(-2px);
}

.nav-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.06);
}

.nav-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    margin: 5px auto;
    background: var(--gold);
}

.hero {
    min-height: calc(100vh - 78px);
    display: flex;
    align-items: center;
}

.hero-bg {
    position: absolute;
    inset: 0;
    opacity: 0.18;
    background-image: linear-gradient(rgba(255, 212, 0, 0.22) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 212, 0, 0.14) 1px, transparent 1px);
    background-size: 58px 58px;
    mask-image: linear-gradient(to bottom, #000, transparent 85%);
}

.hero-grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1.02fr 0.98fr;
    align-items: center;
    gap: 48px;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
    color: var(--gold);
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-size: 13px;
}

.eyebrow::before {
    content: "";
    width: 32px;
    height: 2px;
    background: var(--gold);
}

.eyebrow.dark {
    color: #8a6a00;
}

.hero h1, .section-heading h2, .about-content h2, .contact-content h2, .info-panel h2 {
    margin: 0 0 18px;
    line-height: 1.06;
    letter-spacing: -0.04em;
}

.hero h1 {
    font-size: clamp(42px, 7vw, 82px);
    max-width: 820px;
}

.hero p, .contact-content p {
    max-width: 620px;
    color: var(--muted);
    font-size: 18px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin: 32px 0;
}

.trust-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.trust-row span {
    padding: 8px 13px;
    border: 1px solid rgba(255, 212, 0, 0.2);
    border-radius: 999px;
    color: #f4f4f4;
    background: rgba(255, 255, 255, 0.05);
}

.hero-card {
    position: relative;
}

.top-banner {
    width: 100%;
    line-height: 0;
    background: #0a0a0a;
}

.top-banner img {
    width: 100%;
    height: auto;
    max-height: 520px;
    object-fit: cover;
    object-position: center;
    display: block;
}

.hero-image, .about-image, .service-image {
    min-height: 520px;
    border: 1px solid var(--border);
    border-radius: 34px;
    background-size: cover;
    background-position: center;
    box-shadow: var(--shadow), inset 0 0 0 1px rgba(255, 255, 255, 0.06);
}

.ai-hero {
    background-image: linear-gradient(180deg, rgba(0, 0, 0, 0.18), rgba(0, 0, 0, 0.72)), url("https://baovedaibaolong.com/wp-content/uploads/2020/12/dich-vu-bao-ve-chuyen-nghiep-tai-tphcm.jpg");
    background-position: center top;
}

.recruit-image {
    background-image: linear-gradient(180deg, rgba(0, 0, 0, 0.18), rgba(0, 0, 0, 0.72)), url("https://images.unsplash.com/photo-1517048676732-d65bc937f952?auto=format&fit=crop&w=1200&q=78");
}

.floating-badge {
    position: absolute;
    right: -18px;
    bottom: 34px;
    max-width: 190px;
    padding: 18px;
    border: 1px solid rgba(255, 212, 0, 0.36);
    border-radius: 22px;
    color: #0a0a0a;
    background: linear-gradient(135deg, var(--gold), #fff3a1);
    box-shadow: 0 18px 50px rgba(255, 212, 0, 0.28);
}

.floating-badge strong {
    display: block;
    font-size: 34px;
    line-height: 1;
}

.about-grid, .contact-grid {
    display: grid;
    grid-template-columns: 0.95fr 1.05fr;
    gap: 52px;
    align-items: center;
}

.about-media {
    position: relative;
}

.about-image {
    min-height: 500px;
    background-image: linear-gradient(180deg, rgba(0, 0, 0, 0.05), rgba(0, 0, 0, 0.58)), url("https://images.unsplash.com/photo-1517048676732-d65bc937f952?auto=format&fit=crop&w=1100&q=78");
}

.security-card {
    position: absolute;
    left: 24px;
    right: 24px;
    bottom: 24px;
    padding: 22px;
    border-radius: 24px;
    color: var(--white);
    background: rgba(5, 5, 5, 0.82);
    backdrop-filter: blur(14px);
    border: 1px solid var(--border);
}

.security-card .icon {
    font-size: 34px;
}

.about-content h2, .section-heading h2, .contact-content h2, .info-panel h2 {
    font-size: clamp(32px, 4vw, 52px);
}

.about-content p, .section-heading p, .info-panel p {
    color: #4c4c4c;
    font-size: 17px;
}

.about-list {
    display: grid;
    gap: 12px;
    margin-top: 24px;
    font-weight: 700;
}

.stats {
    padding: 56px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.stat-card {
    padding: 34px;
    text-align: center;
    border: 1px solid var(--border);
    border-radius: 28px;
    background: rgba(255, 255, 255, 0.06);
}

.stat-card strong {
    display: block;
    color: var(--gold);
    font-size: clamp(42px, 6vw, 72px);
    line-height: 1;
}

.stat-card span {
    color: #f2f2f2;
    font-weight: 800;
}

.section-heading {
    max-width: 760px;
    margin: 0 auto 46px;
    text-align: center;
}

.section-heading .eyebrow {
    justify-content: center;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.service-card, .info-panel, .contact-form {
    overflow: hidden;
    border-radius: 28px;
    background: var(--white);
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.service-card {
    border: 1px solid rgba(0, 0, 0, 0.07);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 24px 70px rgba(216, 168, 0, 0.24), 0 0 0 1px rgba(255, 212, 0, 0.35);
}

.service-image {
    min-height: 215px;
    border: 0;
    border-radius: 0;
    box-shadow: none;
}

.apartment { background-image: linear-gradient(rgba(0,0,0,.05), rgba(0,0,0,.45)), url("https://images.unsplash.com/photo-1545324418-cc1a3fa10c00?auto=format&fit=crop&w=900&q=76"); }
.building { background-image: linear-gradient(rgba(0,0,0,.05), rgba(0,0,0,.45)), url("https://images.unsplash.com/photo-1497366754035-f200968a6e72?auto=format&fit=crop&w=900&q=76"); }
.restaurant { background-image: linear-gradient(rgba(0,0,0,.05), rgba(0,0,0,.45)), url("https://images.unsplash.com/photo-1555396273-367ea4eb4db5?auto=format&fit=crop&w=900&q=76"); }
.cafe { background-image: linear-gradient(rgba(0,0,0,.05), rgba(0,0,0,.45)), url("https://images.unsplash.com/photo-1501339847302-ac426a4a7cbb?auto=format&fit=crop&w=900&q=76"); }
.fashion { background-image: linear-gradient(rgba(0,0,0,.05), rgba(0,0,0,.45)), url("https://images.unsplash.com/photo-1441986300917-64674bd600d8?auto=format&fit=crop&w=900&q=76"); }
.spa { background-image: linear-gradient(rgba(0,0,0,.05), rgba(0,0,0,.45)), url("https://images.unsplash.com/photo-1540555700478-4be289fbecef?auto=format&fit=crop&w=900&q=76"); }

.service-body {
    padding: 24px;
}

.service-icon {
    width: 46px;
    height: 46px;
    display: grid;
    place-items: center;
    margin-top: -48px;
    margin-bottom: 14px;
    border-radius: 14px;
    background: var(--gold);
    box-shadow: 0 10px 28px rgba(255, 212, 0, 0.28);
}

.service-body h3 {
    margin: 0 0 10px;
    font-size: 21px;
}

.service-body p {
    margin: 0 0 18px;
    color: #555;
}

.card-link {
    color: #7a5d00;
    font-weight: 900;
}

.process-grid, .commitment-grid, .testimonial-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
}

.process-card, .commitment-card, .testimonial-card, .why-item {
    border: 1px solid var(--border);
    border-radius: 26px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.process-card, .commitment-card {
    padding: 28px;
    background: rgba(255, 255, 255, 0.06);
}

.process-card:hover, .commitment-card:hover, .why-item:hover, .testimonial-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 24px 60px rgba(255, 212, 0, 0.16);
}

.process-card span, .commitment-card strong {
    display: inline-flex;
    width: 56px;
    height: 56px;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
    border-radius: 18px;
    color: #090909;
    background: linear-gradient(135deg, var(--gold), #fff18b);
    font-size: 18px;
    font-weight: 900;
}

.process-card h3, .commitment-card h3 {
    margin: 0 0 10px;
    font-size: 21px;
}

.process-card p, .commitment-card p {
    margin: 0;
    color: var(--muted);
}

.why-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 42px;
    align-items: center;
}

.why-content p {
    margin-bottom: 28px;
    color: #4c4c4c;
    font-size: 17px;
}

.why-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
}

.why-item {
    display: flex;
    gap: 16px;
    padding: 24px;
    color: #171717;
    background: var(--white);
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.08);
}

.why-item > span {
    flex: 0 0 48px;
    width: 48px;
    height: 48px;
    display: grid;
    place-items: center;
    border-radius: 16px;
    background: var(--gold);
}

.why-item h3, .testimonial-card h3 {
    margin: 0 0 8px;
}

.why-item p {
    margin: 0;
    color: #555;
}

.commitment-grid {
    grid-template-columns: repeat(4, 1fr);
}

.testimonial-grid {
    grid-template-columns: repeat(3, 1fr);
}

.testimonial-card {
    padding: 30px;
    color: #171717;
    background: var(--white);
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.08);
}

.stars {
    margin-bottom: 16px;
    color: var(--gold-deep);
    font-size: 22px;
    letter-spacing: 2px;
}

.testimonial-card p {
    margin: 0 0 22px;
    color: #444;
    font-size: 17px;
}

.testimonial-card strong {
    display: block;
    color: #0f0f0f;
    font-size: 18px;
}

.testimonial-card span {
    color: #777;
    font-weight: 700;
}

.contact-grid {
    align-items: start;
}

.contact-info {
    display: grid;
    gap: 12px;
    margin: 26px 0;
    color: #f0f0f0;
    font-weight: 700;
}

.map {
    width: 100%;
    min-height: 260px;
    border: 1px solid var(--border);
    border-radius: 26px;
    filter: grayscale(0.2) contrast(1.05);
}

.contact-form {
    display: grid;
    gap: 12px;
    padding: 32px;
    color: #171717;
}

.contact-form label {
    font-weight: 800;
}

.contact-form input, .contact-form textarea {
    width: 100%;
    border: 1px solid #dedede;
    border-radius: 16px;
    padding: 14px 16px;
    font: inherit;
    outline: none;
    transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.contact-form input:focus, .contact-form textarea:focus {
    border-color: var(--gold-deep);
    box-shadow: 0 0 0 4px rgba(255, 212, 0, 0.16);
}

.footer {
    padding: 42px 0;
    background: #000;
    border-top: 1px solid rgba(255, 212, 0, 0.18);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 28px;
    align-items: center;
}

.footer p {
    color: var(--muted);
}

.footer-info {
    display: grid;
    gap: 8px;
    justify-items: end;
    color: #efefef;
}

.floating-actions {
    position: fixed;
    right: 18px;
    bottom: 18px;
    z-index: 120;
    display: grid;
    gap: 10px;
}

.float-btn {
    width: 58px;
    height: 58px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    color: #080808;
    background: var(--gold);
    font-weight: 900;
    box-shadow: 0 0 0 rgba(255, 212, 0, 0.7);
    animation: pulse 1.6s infinite;
}

.float-btn.call {
    background: linear-gradient(135deg, #ffffff, var(--gold));
}

.float-btn.fb {
    background: linear-gradient(135deg, #1877f2, #0d5cb3);
    color: #ffffff;
}

.recruitment-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.info-panel {
    padding: 30px;
}

.info-panel h2 {
    font-size: 30px;
}

.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(255, 212, 0, 0.55); }
    70% { box-shadow: 0 0 0 16px rgba(255, 212, 0, 0); }
    100% { box-shadow: 0 0 0 0 rgba(255, 212, 0, 0); }
}

@media (max-width: 980px) {
    .nav-toggle {
        display: block;
    }

    .nav-menu {
        position: fixed;
        inset: 78px 0 auto 0;
        display: grid;
        gap: 0;
        padding: 18px;
        background: rgba(5, 5, 5, 0.98);
        border-bottom: 1px solid var(--border);
        transform: translateY(-130%);
        transition: transform 0.3s ease;
    }

    .nav-menu.is-open {
        transform: translateY(0);
    }

    .nav-menu a {
        padding: 14px;
    }

    .hero-grid, .about-grid, .contact-grid, .footer-grid {
        grid-template-columns: 1fr;
    }

    .hero {
        min-height: auto;
        padding-top: 72px;
    }

    .services-grid, .recruitment-grid, .process-grid, .commitment-grid, .testimonial-grid, .why-list {
        grid-template-columns: repeat(2, 1fr);
    }

    .why-grid {
        grid-template-columns: 1fr;
    }

    .footer-info {
        justify-items: start;
    }
}

@media (max-width: 680px) {
    .section, .section-dark {
        padding: 72px 0;
    }

    .navbar {
        min-height: 70px;
    }

    .nav-menu {
        inset: 70px 0 auto 0;
    }

    .brand-mark {
        width: 42px;
        height: 42px;
    }

    .hero-image, .about-image {
        min-height: 360px;
        border-radius: 24px;
    }

    .floating-badge {
        right: 12px;
        bottom: 18px;
    }

    .services-grid, .stats-grid, .recruitment-grid, .process-grid, .commitment-grid, .testimonial-grid, .why-list {
        grid-template-columns: 1fr;
    }

    .why-item {
        padding: 20px;
    }

    .hero-actions {
        display: grid;
    }

    .contact-form {
        padding: 22px;
    }

    .floating-actions {
        right: 12px;
        bottom: 12px;
    }

    .float-btn {
        width: 52px;
        height: 52px;
        font-size: 13px;
    }
}