:root {
        --navy: #0B132B;
        --blue: #1261FF;
        --cyan: #00D4FF;
        --yellow: #FFCC00;
        --white: #FFFFFF;
        --light: #F4F7FB;
        --text: #172033;
        --muted: #5E687A;
        --radius: 22px;
        --shadow: 0 18px 45px rgba(11, 19, 43, .12);
    }

    * {
        box-sizing: border-box;
    }

    html {
        scroll-behavior: smooth;
    }

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

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

    .container {
        width: min(1180px, calc(100% - 40px));
        margin: 0 auto;
    }

    /* --------------------------------------------------
       HEADER
    -------------------------------------------------- */

    header {
        position: sticky;
        top: 0;
        z-index: 100;
        background: rgba(11, 19, 43, .96);
        backdrop-filter: blur(12px);
        border-bottom: 1px solid rgba(255,255,255,.08);
    }

    .nav {
        min-height: 78px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 30px;
    }

    .brand {
        display: flex;
        align-items: center;
        gap: 13px;
        color: var(--white);
    }

    .brand-symbol {
        width: 46px;
        height: 46px;
        flex: 0 0 46px;
    }

    .brand-name {
        font-size: 1.55rem;
        font-weight: 800;
        letter-spacing: .08em;
    }

    .brand-name span {
        color: var(--yellow);
    }

    nav {
        display: flex;
        align-items: center;
        gap: 28px;
    }

    nav a {
        color: rgba(255,255,255,.88);
        font-size: .92rem;
        font-weight: 600;
    }

    nav a:hover,
    nav a:focus {
        color: var(--yellow);
    }

    .nav-button {
        padding: 10px 18px;
        border: 1px solid rgba(255,255,255,.3);
        border-radius: 999px;
    }

    /* --------------------------------------------------
       HERO
    -------------------------------------------------- */

    .hero {
        position: relative;
        overflow: hidden;
        color: var(--white);
        background:
            radial-gradient(circle at 72% 30%, rgba(0,212,255,.16), transparent 25%),
            radial-gradient(circle at 25% 20%, rgba(18,97,255,.20), transparent 30%),
            linear-gradient(135deg, #071022 0%, #0B132B 55%, #071022 100%);
    }

    .hero::after {
        content: "";
        position: absolute;
        width: 420px;
        height: 420px;
        right: -180px;
        top: -180px;
        border: 1px solid rgba(0,212,255,.18);
        border-radius: 50%;
        box-shadow:
            0 0 0 60px rgba(18,97,255,.05),
            0 0 0 120px rgba(18,97,255,.03);
    }

    .hero-grid {
        min-height: 650px;
        display: grid;
        grid-template-columns: 1.05fr .95fr;
        align-items: center;
        gap: 70px;
        padding: 75px 0 85px;
    }

    .eyebrow {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        color: var(--cyan);
        font-size: .82rem;
        font-weight: 800;
        letter-spacing: .13em;
        text-transform: uppercase;
        margin-bottom: 18px;
    }

    .eyebrow::before {
        content: "";
        width: 28px;
        height: 3px;
        background: var(--yellow);
        border-radius: 4px;
    }

    h1 {
        margin: 0;
        font-size: clamp(3rem, 7vw, 5.8rem);
        line-height: .94;
        letter-spacing: -.055em;
        font-weight: 800;
    }

    h1 .accent {
        color: var(--yellow);
    }

    .hero h2 {
        margin: 25px 0 0;
        font-size: clamp(1.35rem, 2.5vw, 2rem);
        font-weight: 500;
        color: rgba(255,255,255,.92);
    }

    .hero p {
        max-width: 620px;
        margin: 22px 0 0;
        color: rgba(255,255,255,.72);
        font-size: 1.08rem;
    }

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

    .button {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        min-height: 50px;
        padding: 0 23px;
        border-radius: 999px;
        font-weight: 800;
        border: 2px solid transparent;
        transition: .2s ease;
    }

    .button-primary {
        background: var(--yellow);
        color: var(--navy);
    }

    .button-primary:hover {
        transform: translateY(-2px);
        box-shadow: 0 10px 25px rgba(255,204,0,.22);
    }

    .button-secondary {
        border-color: rgba(255,255,255,.3);
        color: var(--white);
    }

    .button-secondary:hover {
        border-color: var(--cyan);
        color: var(--cyan);
    }

    /* Logo / visual hero */

    .hero-visual {
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .logo-card {
        width: min(470px, 100%);
        aspect-ratio: 1 / 1;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 36px;
        background:
            radial-gradient(circle at 50% 34%, rgba(18,97,255,.16), transparent 38%),
            rgba(255,255,255,.035);
        border: 1px solid rgba(255,255,255,.10);
        box-shadow: 0 30px 80px rgba(0,0,0,.28);
    }

    .logo-card svg {
        width: 88%;
        height: 88%;
    }

    /* --------------------------------------------------
       INTRO
    -------------------------------------------------- */

    .intro {
        padding: 90px 0 70px;
        text-align: center;
    }

    .section-label {
        color: var(--blue);
        font-size: .8rem;
        font-weight: 800;
        letter-spacing: .14em;
        text-transform: uppercase;
    }

    h2.section-title {
        margin: 10px 0 15px;
        font-size: clamp(2rem, 4vw, 3.2rem);
        line-height: 1.1;
        letter-spacing: -.035em;
        color: var(--navy);
    }

    .intro > .container > p {
        max-width: 760px;
        margin: 0 auto;
        color: var(--muted);
        font-size: 1.05rem;
    }

    /* --------------------------------------------------
       FEATURES
    -------------------------------------------------- */

    .features {
        padding: 20px 0 100px;
    }

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

    .feature {
        padding: 32px;
        border-radius: var(--radius);
        background: var(--white);
        border: 1px solid #E6EAF1;
        box-shadow: var(--shadow);
    }

    .feature-icon {
        width: 58px;
        height: 58px;
        display: grid;
        place-items: center;
        border-radius: 17px;
        background: var(--navy);
        color: var(--yellow);
        font-size: 1.7rem;
        margin-bottom: 22px;
    }

    .feature:nth-child(2) .feature-icon {
        color: var(--cyan);
    }

    .feature:nth-child(3) .feature-icon {
        color: var(--yellow);
    }

    .feature h3 {
        margin: 0 0 10px;
        font-size: 1.3rem;
        color: var(--navy);
    }

    .feature p {
        margin: 0;
        color: var(--muted);
    }

    /* --------------------------------------------------
       SAFETY
    -------------------------------------------------- */

    .safety {
        padding: 90px 0;
        background: var(--navy);
        color: var(--white);
    }

    .safety-grid {
        display: grid;
        grid-template-columns: .85fr 1.15fr;
        gap: 70px;
        align-items: center;
    }

    .safety h2 {
        margin: 10px 0 20px;
        font-size: clamp(2rem, 4vw, 3.2rem);
        line-height: 1.08;
    }

    .safety p {
        color: rgba(255,255,255,.72);
    }

    .emergency {
        border: 1px solid rgba(255,204,0,.35);
        border-radius: 24px;
        padding: 30px;
        background: linear-gradient(145deg, rgba(255,204,0,.09), rgba(255,255,255,.03));
    }

    .emergency-title {
        display: flex;
        align-items: center;
        gap: 13px;
        color: var(--yellow);
        font-size: 1.15rem;
        font-weight: 800;
        margin-bottom: 18px;
    }

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

    .emergency li {
        padding: 11px 0;
        border-bottom: 1px solid rgba(255,255,255,.08);
        color: rgba(255,255,255,.82);
    }

    .emergency li:last-child {
        border-bottom: 0;
    }

    /* --------------------------------------------------
       VISION
    -------------------------------------------------- */

    .vision {
        padding: 95px 0;
        background: var(--light);
    }

    .vision-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 50px;
        align-items: center;
    }

    .vision-panel {
        padding: 42px;
        border-radius: 30px;
        background: var(--white);
        box-shadow: var(--shadow);
    }

    .vision-panel h3 {
        margin-top: 0;
        color: var(--navy);
        font-size: 1.7rem;
    }

    .vision-list {
        display: grid;
        gap: 13px;
        margin-top: 25px;
    }

    .vision-item {
        display: flex;
        gap: 13px;
        align-items: flex-start;
        color: var(--muted);
    }

    .check {
        color: var(--blue);
        font-weight: 900;
    }

    /* --------------------------------------------------
       CTA
    -------------------------------------------------- */

    .cta {
        padding: 90px 0;
    }

    .cta-box {
        position: relative;
        overflow: hidden;
        padding: 60px;
        border-radius: 30px;
        background:
            radial-gradient(circle at 85% 20%, rgba(0,212,255,.20), transparent 28%),
            linear-gradient(135deg, var(--navy), #101C3D);
        color: var(--white);
        text-align: center;
    }

    .cta-box h2 {
        margin: 0 0 12px;
        font-size: clamp(2rem, 4vw, 3rem);
    }

    .cta-box p {
        max-width: 650px;
        margin: 0 auto 28px;
        color: rgba(255,255,255,.72);
    }

    /* --------------------------------------------------
       FOOTER
    -------------------------------------------------- */

    footer {
        background: #070D1D;
        color: rgba(255,255,255,.65);
        padding: 35px 0;
    }

    .footer-inner {
        display: flex;
        justify-content: space-between;
        gap: 20px;
        align-items: center;
    }

    footer strong {
        color: var(--white);
    }

    /* --------------------------------------------------
       ACCESSIBILITY
    -------------------------------------------------- */

    :focus-visible {
        outline: 3px solid var(--yellow);
        outline-offset: 4px;
    }

    @media (max-width: 900px) {
        nav {
            display: none;
        }

        .hero-grid,
        .safety-grid,
        .vision-grid {
            grid-template-columns: 1fr;
        }

        .hero-grid {
            gap: 45px;
        }

        .hero-visual {
            order: -1;
        }

        .logo-card {
            max-width: 390px;
        }

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

        .footer-inner {
            flex-direction: column;
            text-align: center;
        }
    }

    @media (max-width: 560px) {
        .container {
            width: min(100% - 28px, 1180px);
        }

        .hero-grid {
            padding: 55px 0 65px;
        }

        .hero-actions {
            flex-direction: column;
        }

        .button {
            width: 100%;
        }

        .feature,
        .vision-panel {
            padding: 26px;
        }

        .cta-box {
            padding: 38px 25px;
        }
    }

    @media (prefers-reduced-motion: reduce) {
        html {
            scroll-behavior: auto;
        }

        * {
            transition: none !important;
        }
    }