:root{
    /* --- palette (unchanged from original brief) --- */
    --primary-color: #0f1117;
    --secondary-color: #1e1e2d;
    --third-color: #262638;
    --ico-color: #1e2130;
    --name_1-color: #4f8ef7;
    --paper: #fafafa;

    /* derived tokens */
    --accent-soft: rgba(79, 142, 247, 0.14);
    --accent-line: rgba(79, 142, 247, 0.35);
    --ink: #12141c;
    --ink-soft: rgba(18, 20, 28, 0.62);
    --paper-soft: rgba(250, 250, 250, 0.68);

    --font-display: 'Space Grotesk', Verdana, Geneva, Tahoma, sans-serif;
    --font-body: 'Inter', Verdana, Geneva, Tahoma, sans-serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;

    --nav-h: 72px;
    --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html{
    scroll-behavior: smooth;
}

body {
    line-height: 1.6;
    background-color: var(--paper);
    font-family: var(--font-body);
    color: var(--ink);
    overflow-x: hidden;
}

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

/* ============ NAVBAR ============ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--nav-h);
    background-color: transparent;
    padding: 0 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
    transition: background-color 0.4s var(--ease), box-shadow 0.4s var(--ease), backdrop-filter 0.4s var(--ease);
}

.navbar.scrolled{
    background-color: rgba(30, 33, 48, 0.82);
    backdrop-filter: blur(14px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
}

.logo{
    height: 100%;
    display: flex;
    align-items: center;
}

.logo_image{
    height: 34px;
    width: auto;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 4px;
    align-items: center;
}

.menu_button{
    position: relative;
    padding: 8px 4px;
    margin: 0 12px;
}

.menu_button a {
    text-decoration: none;
    color: #fafafa;
    font-family: var(--font-mono);
    font-size: 13px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    transition: color 0.25s var(--ease);
}

.menu_button::after{
    content: "";
    position: absolute;
    left: 4px;
    right: 4px;
    bottom: 0;
    height: 1px;
    background: var(--name_1-color);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s var(--ease);
}

.menu_button:hover::after{
    transform: scaleX(1);
}

.menu_button:hover a{
    color: var(--name_1-color);
}

.nav_controls{
    display: flex;
    align-items: center;
    gap: 20px;
}

/* language switch */
.lang_switch{
    display: flex;
    align-items: center;
    gap: 6px;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.16);
    border-radius: 999px;
    padding: 6px 12px;
    cursor: pointer;
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.08em;
    color: rgba(250,250,250,0.5);
    transition: border-color 0.25s var(--ease), background 0.25s var(--ease);
}

.lang_switch:hover{
    border-color: var(--accent-line);
}

.lang_divider{
    color: rgba(250,250,250,0.3);
}

.lang_option{
    transition: color 0.25s var(--ease);
}

.lang_option.is-active{
    color: var(--name_1-color);
    font-weight: 600;
}

/* burger (mobile only) */
.burger{
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.burger span{
    display: block;
    height: 2px;
    width: 100%;
    background: #fafafa;
    border-radius: 2px;
    transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}

.burger.is-open span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
.burger.is-open span:nth-child(2){ opacity: 0; }
.burger.is-open span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }

/* ============ SHARED SECTION PIECES ============ */
.eyebrow{
    font-family: var(--font-mono);
    font-size: 13px;
    letter-spacing: 0.14em;
    color: var(--name_1-color);
    text-transform: uppercase;
    padding: 0 40px;
    margin-bottom: 10px;
}

.eyebrow_dark{
    color: var(--name_1-color);
}

.section_title{
    color: var(--name_1-color);
    font-family: var(--font-display);
    font-size: clamp(42px, 6vw, 72px);
    padding: 0 40px;
    font-style: normal;
    font-weight: 600;
    letter-spacing: -0.01em;
    margin-bottom: 8px;
}

.light_word{
    color: #fafafa;
}

.section_title_light{
    color: var(--primary-color);
}

.section_subtitle{
    font-family: var(--font-body);
    font-size: 18px;
    color: var(--ink-soft);
    padding: 0 40px;
    max-width: 640px;
    margin-bottom: 48px;
}

.section_subtitle_dark{
    color: rgba(250,250,250,0.66);
}

/* scroll-reveal */
.reveal{
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

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

@media (prefers-reduced-motion: reduce){
    .reveal{ opacity: 1; transform: none; transition: none; }
    *{ animation: none !important; }
}

/* ============ HERO ============ */
.hero{
    position: relative;
    margin-top: 0;
    padding-top: var(--nav-h);
    width: 100%;
    min-height: 100vh;
    display: flex;
    flex-direction: row;
    align-items: center;
    background-color: var(--primary-color);
    overflow: hidden;
}

.scan_grid{
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(79,142,247,0.07) 1px, transparent 1px),
        linear-gradient(90deg, rgba(79,142,247,0.07) 1px, transparent 1px);
    background-size: 42px 42px;
    mask-image: radial-gradient(ellipse at 30% 40%, black 10%, transparent 70%);
    pointer-events: none;
}

.left_column{
    width: 55%;
    padding: 40px 20px 40px 60px;
    position: relative;
    z-index: 2;
}

.right_column{
    width: 45%;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px;
    position: relative;
    z-index: 2;
}

.title_name{
    display: flex;
    flex-direction: column;
    line-height: 0.92;
    margin-bottom: 28px;
}

.name_1{
    color: var(--name_1-color);
    font-family: var(--font-display);
    font-size: clamp(56px, 9vw, 104px);
    font-weight: 700;
}

.name_2{
    color: #fafafa;
    font-family: var(--font-display);
    font-size: clamp(56px, 9vw, 104px);
    font-weight: 700;
}

.description_label{
    display: flex;
    flex-direction: column;
    gap: 22px;
}

.description{
    font-family: var(--font-display);
    color: #fafafa;
    font-weight: 500;
    font-size: clamp(24px, 3vw, 36px);
    line-height: 1.25;
}

.accent_word{
    color: var(--name_1-color);
}

.hero_sub{
    font-family: var(--font-body);
    color: rgba(250,250,250,0.6);
    font-size: 16px;
    max-width: 460px;
}

.cta_button{
    display: inline-block;
    width: fit-content;
    background: var(--name_1-color);
    color: #0f1117;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 15px;
    padding: 14px 28px;
    border-radius: 999px;
    text-decoration: none;
    transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
    box-shadow: 0 0 0 rgba(79,142,247,0);
}

.cta_button:hover{
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(79,142,247,0.35);
}

/* signature: lens graphic */
.lens_frame{
    position: relative;
    width: min(70%, 420px);
    aspect-ratio: 1 / 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lens_ring{
    position: absolute;
    border-radius: 50%;
    border: 1px solid var(--accent-line);
}

.ring_outer{
    inset: 0;
    animation: spin 40s linear infinite;
    border-style: dashed;
}

.ring_mid{
    inset: 12%;
    animation: spin 26s linear infinite reverse;
    border-color: rgba(79,142,247,0.22);
}

.ring_inner{
    inset: 26%;
    background: radial-gradient(circle at 50% 45%, rgba(79,142,247,0.16), transparent 70%);
    animation: pulse 3.4s ease-in-out infinite;
}

.lens_sweep{
    position: absolute;
    inset: 4%;
    border-radius: 50%;
    overflow: hidden;
    pointer-events: none;
}

.lens_sweep::after{
    content: "";
    position: absolute;
    top: -60%;
    left: -10%;
    width: 120%;
    height: 40%;
    background: linear-gradient(180deg, rgba(79,142,247,0.28), transparent);
    animation: sweep 3.4s ease-in-out infinite;
}

@keyframes spin{
    from{ transform: rotate(0deg); }
    to{ transform: rotate(360deg); }
}

@keyframes pulse{
    0%, 100%{ opacity: 0.6; transform: scale(1); }
    50%{ opacity: 1; transform: scale(1.04); }
}

@keyframes sweep{
    0%{ transform: translateY(0%); opacity: 0; }
    15%{ opacity: 1; }
    85%{ opacity: 1; }
    100%{ transform: translateY(260%); opacity: 0; }
}

.logo_principal{
    width: 46%;
    position: relative;
    z-index: 2;
    filter: drop-shadow(0 20px 40px rgba(0,0,0,0.4));
}

.lens_tag{
    position: absolute;
    bottom: -6px;
    right: 4%;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.1em;
    color: var(--name_1-color);
    background: rgba(15,17,23,0.7);
    border: 1px solid var(--accent-line);
    padding: 5px 10px;
    border-radius: 999px;
}

/* ============ PROBLEM ============ */
.problem{
    padding: 100px 0 90px;
    background-color: var(--secondary-color);
    width: 100%;
}

.horizontal_section{
    width: 100%;
    display: flex;
    flex-direction: row;
    gap: 40px;
    margin-top: 30px;
}

.problem1{
    width: 50%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 20px;
}

.problem2{
    width: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.exposure{
    color: #fafafa;
    font-family: var(--font-display);
    font-size: clamp(28px, 3.4vw, 42px);
    padding: 0 40px;
    font-weight: 600;
}

.problem_description{
    font-size: 17px;
    font-family: var(--font-body);
    color: rgba(250,250,250,0.72);
    padding: 0 40px;
    max-width: 560px;
}

.news_image{
    width: 82%;
    border-radius: 16px;
    box-shadow: 0 24px 50px rgba(0,0,0,0.35);
    transition: transform 0.5s var(--ease);
}

.news_image:hover{
    transform: translateY(-6px);
}

/* ============ SOLUTION ============ */
.solution{
    padding: 100px 0 90px;
    background-color: var(--third-color);
}

.solution1{
    width: 50%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 24px;
}

.solution2{
    width: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.solution_img{
    width: 82%;
    border-radius: 16px;
    box-shadow: 0 24px 50px rgba(0,0,0,0.35);
    transition: transform 0.5s var(--ease);
}

.solution_img:hover{
    transform: translateY(-6px);
}

.service_list {
    padding: 0 40px;
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 22px;
}

.point{
    display: flex;
    align-items: flex-start;
    gap: 14px;
    color: #fafafa;
    font-size: 17px;
    font-family: var(--font-body);
}

.point_icon{
    flex-shrink: 0;
    width: 26px;
    height: 26px;
    margin-top: 2px;
    fill: none;
    stroke: var(--name_1-color);
    stroke-width: 1.6;
}

/* ============ PRICING ============ */
.pricing{
    padding: 110px 0;
    background-color: var(--paper);
}

.pricing_grid{
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    padding: 0 40px;
}

.price_card{
    position: relative;
    background: #ffffff;
    border: 1px solid rgba(18,20,28,0.08);
    border-radius: 18px;
    padding: 36px 28px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s var(--ease);
}

.price_card:hover{
    transform: translateY(-8px);
    box-shadow: 0 24px 48px rgba(18,20,28,0.1);
    border-color: var(--accent-line);
}

.price_card_featured{
    border-color: var(--name_1-color);
    background: linear-gradient(180deg, #ffffff 0%, var(--accent-soft) 220%);
}

.price_badge{
    position: absolute;
    top: -13px;
    left: 28px;
    background: var(--name_1-color);
    color: #ffffff;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 5px 12px;
    border-radius: 999px;
}

.price_name{
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 600;
    color: var(--ink);
}

.price_desc{
    font-size: 14.5px;
    color: var(--ink-soft);
}

.price_value{
    font-family: var(--font-mono);
    font-size: 15px;
    letter-spacing: 0.05em;
    color: var(--name_1-color);
    padding-bottom: 6px;
    border-bottom: 1px solid rgba(18,20,28,0.08);
}

.price_features{
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
    font-size: 14.5px;
    color: var(--ink);
    flex-grow: 1;
}

.price_features li{
    padding-left: 18px;
    position: relative;
}

.price_features li::before{
    content: "";
    position: absolute;
    left: 0;
    top: 8px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--name_1-color);
}

.price_cta{
    text-align: center;
    text-decoration: none;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 14.5px;
    color: var(--name_1-color);
    border: 1px solid var(--accent-line);
    border-radius: 999px;
    padding: 12px 20px;
    transition: background 0.25s var(--ease), color 0.25s var(--ease);
}

.price_cta:hover{
    background: var(--name_1-color);
    color: #ffffff;
}

/* ============ CONTACT ============ */
.contact{
    padding: 110px 0 100px;
    background-color: var(--primary-color);
}

.contact_grid{
    display: grid;
    grid-template-columns: 1fr;
    max-width: 640px;
    gap: 48px;
    padding: 0 40px;
}

.contact_info{
    display: flex;
    flex-direction: column;
    gap: 22px;
    justify-content: center;
}

.info_row{
    display: flex;
    flex-direction: column;
    gap: 4px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    padding-bottom: 18px;
}

.info_label{
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(250,250,250,0.42);
}

.info_value{
    font-family: var(--font-body);
    font-size: 17px;
    color: #fafafa;
}

/* ============ FOOTER ============ */
.footer{
    background: var(--ico-color);
    padding: 32px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.footer_brand{
    font-family: var(--font-display);
    color: var(--name_1-color);
    font-weight: 600;
    letter-spacing: 0.04em;
}

.footer_copy{
    font-family: var(--font-mono);
    font-size: 12px;
    color: rgba(250,250,250,0.4);
}

/* ============ RESPONSIVE ============ */
@media (max-width: 960px){
    .hero{
        flex-direction: column;
        padding-bottom: 60px;
        min-height: auto;
    }

    .left_column, .right_column{
        width: 100%;
        padding: 24px 24px;
    }

    .right_column{
        order: -1;
        padding-top: 48px;
    }

    .lens_frame{
        width: min(70%, 300px);
    }

    .horizontal_section{
        flex-direction: column;
    }

    .problem1, .problem2, .solution1, .solution2{
        width: 100%;
    }

    .problem2, .solution2{
        order: 2;
        padding-top: 20px;
    }

    .news_image, .solution_img{
        width: 100%;
        max-width: 420px;
    }

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

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

@media (max-width: 760px){
    .nav-links{
        position: fixed;
        top: var(--nav-h);
        left: 0;
        width: 100%;
        flex-direction: column;
        background: rgba(30, 33, 48, 0.97);
        backdrop-filter: blur(14px);
        gap: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s var(--ease);
        align-items: stretch;
    }

    .nav-links.is-open{
        max-height: 520px;
    }

    .menu_button{
        margin: 0;
        padding: 18px 32px;
        width: 100%;
    }

    .menu_button::after{
        display: none;
    }

        .burger{
        display: flex;
    }

    .navbar{
        padding: 0 20px;
    }

    .eyebrow, .section_title, .section_subtitle{
        padding: 0 24px;
    }

    .problem_description, .exposure{
        padding: 0 24px;
    }

    .service_list, .pricing_grid, .contact_grid{
        padding: 0 24px;
    }

    .footer{
        justify-content: center;
        text-align: center;
    }
}

@media (max-width: 480px){
    .name_1, .name_2{
        font-size: 52px;
    }

    .cta_button{
        width: 100%;
        text-align: center;
    }

    .lang_switch{
        padding: 5px 9px;
        font-size: 11px;
    }
}