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

body {
    font-family: Arial, Helvetica, sans-serif;
    background: #f7f8f5;
    color: #102015;
}

/* HEADER */
/* HEADER */

.top-header {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 100;

    width: 100%;
    height: 105px;

    display: flex;
    justify-content: space-between;
    align-items: center;

    padding: 0 28px;

    background: linear-gradient(
        135deg,
        rgba(255,255,255,0.96),
        rgba(225,225,225,0.88)
    );

    border-bottom: 1px solid rgba(255,255,255,0.55);
    box-shadow: 0 8px 28px rgba(0,0,0,0.08);

    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo img {
    height: 84px;
    width: auto;
    display: block;
}

.burger {
    width: 42px;
    background: none;
    border: none;
    cursor: pointer;
}

.burger span {
    display: block;
    height: 3px;
    margin: 6px 0;
    background: #0b6635;
}

/* SIDE MENU */

.side-menu {
    position: fixed;
    top: 0;
    right: -320px;
    z-index: 200;
    width: 300px;
    height: 100vh;
    padding: 32px;
    background: #062b18;
    transition: right 0.3s ease;
}

.side-menu.open {
    right: 0;
}

.close-btn {
    background: none;
    border: none;
    color: white;
    font-size: 34px;
    margin-bottom: 28px;
    cursor: pointer;
}

.side-menu a {
    display: block;
    color: white;
    text-decoration: none;
    padding: 18px 0;
    border-bottom: 1px solid rgba(255,255,255,0.12);
    letter-spacing: 1px;
    text-transform: uppercase;
    font-size: 13px;
}

/* HERO SLIDER */

.hero-slider {
    position: relative;
    width: 100%;
    height: 100vh;
    overflow: hidden;
    background: #000;
}

.hero-slide {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0;
    visibility: hidden;
    transition: opacity 1s ease;
}

.hero-slide.active {
    opacity: 1;
    visibility: visible;
}

.hero-slide::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(
        90deg,
        rgba(255,255,255,0.95) 0%,
        rgba(255,255,255,0.65) 38%,
        rgba(255,255,255,0.08) 100%
    );
}

.hero-text {
    position: relative;
    z-index: 5;
    width: 50%;
    margin-left: 7%;
    margin-top: 50px;
}

.tag {
    display: inline-block;
    padding: 7px 12px;
    margin-bottom: 12px;
    background: rgba(255,255,255,0.22);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 12px;
    color: #0b6635;
    font-size: 12px;
    font-weight: 900;
    letter-spacing: 3px;
    text-transform: uppercase;
}

.hero-text h1 {
    display: inline-block;
    padding: 10px 14px;
    margin-bottom: 18px;
    background: rgba(255,255,255,0.22);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 16px;
    font-size: clamp(48px, 7vw, 82px);
    line-height: 0.95;
    font-weight: 900;
    color: #111;
}

.hero-text h1 span {
    display: block;
    color: #0b6635;
}

.desc {
    display: inline-block;
    max-width: 460px;
    padding: 10px 14px;
    margin-bottom: 18px;
    background: rgba(255,255,255,0.22);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 14px;
    color: #203126;
    line-height: 1.6;
    font-size: 16px;
}

.main-btn {
    display: inline-block;
    padding: 15px 30px;
    border-radius: 12px;
    background: linear-gradient(135deg, #075c2e, #0f8f45);
    color: white;
    text-decoration: none;
    font-weight: 900;
    letter-spacing: 1px;
    text-transform: uppercase;
    box-shadow: 0 10px 25px rgba(12,107,50,0.28);
}

.dots {
    position: absolute;
    bottom: 28px;
    left: 50%;
    z-index: 10;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
}

.dot {
    width: 32px;
    height: 5px;
    border: none;
    border-radius: 20px;
    background: rgba(255,255,255,0.45);
    cursor: pointer;
}

.dot.active {
    background: #0b6635;
}

/* QUALITY STRIP */

.quality-strip {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    background: #063d22;
    color: white;
}

.quality-strip div {
    padding: 28px 24px;
    border-right: 1px solid rgba(255,255,255,0.12);
}

.quality-strip div:last-child {
    border-right: none;
}

.quality-strip h3 {
    margin-bottom: 8px;
    font-size: 13px;
    letter-spacing: 1px;
}

.quality-strip p {
    color: #dcebe3;
    font-size: 13px;
    line-height: 1.5;
}

/* INTRO */

.intro {
    max-width: 820px;
    margin: 0 auto;
    padding: 80px 24px;
    text-align: center;
}

.intro h2 {
    font-size: 42px;
    margin-bottom: 16px;
}

.intro p {
    color: #5f6b61;
    line-height: 1.8;
}

/* VERIFY PAGE */

.verify-page {
    min-height: 100vh;
    padding: 130px 24px 60px;
    display: grid;
    grid-template-columns: 1fr 420px;
    gap: 60px;
    align-items: center;
    background:
        linear-gradient(
            135deg,
            rgba(255,255,255,0.96),
            rgba(238,246,241,0.92)
        ),
        url('/assets/images/science-banner.jpg');
    background-size: cover;
    background-position: center;
}

.verify-left {
    max-width: 600px;
}

.verify-left h1 {
    font-size: clamp(38px, 6vw, 66px);
    line-height: 1;
    margin-bottom: 20px;
    color: #111;
}

.verify-left h1 span {
    color: #0b6635;
}

.verify-left p {
    color: #415046;
    line-height: 1.7;
    font-size: 16px;
    margin-bottom: 22px;
}

.verify-left form {
    max-width: 470px;
}

.verify-left input {
    width: 100%;
    padding: 18px;
    border: 1px solid #cbd6cf;
    border-radius: 10px;
    font-size: 15px;
    margin-bottom: 14px;
    letter-spacing: 1px;
}

.verify-left button {
    width: 100%;
    padding: 18px;
    border: none;
    border-radius: 10px;
    background: linear-gradient(135deg, #075c2e, #0f8f45);
    color: white;
    font-weight: 900;
    letter-spacing: 1.6px;
    cursor: pointer;
}

.verify-card-info {
    background: white;
    padding: 36px;
    border-radius: 16px;
    box-shadow: 0 18px 45px rgba(0,0,0,0.12);
    border-bottom: 6px solid #0b6635;
}

.shield {
    width: 86px;
    height: 86px;
    margin: 0 auto 24px;
    border-radius: 50%;
    background: #0b6635;
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 42px;
    font-weight: 900;
}

.verify-card-info h2 {
    text-align: center;
    color: #0b6635;
    margin-bottom: 24px;
}

.step {
    margin-bottom: 18px;
}

.step strong {
    color: #111;
}

.step p {
    color: #667268;
    font-size: 14px;
    margin-top: 5px;
}

/* RESULT BOXES */

.result {
    margin-top: 25px;
    padding: 20px;
    border-radius: 12px;
    line-height: 1.6;
}

.result h2 {
    margin-bottom: 10px;
}

.result.valid {
    background: #e8f8ec;
    color: #0c6b32;
    border: 1px solid #8dd9a4;
}

.result.used {
    background: #fff6dd;
    color: #7a5600;
    border: 1px solid #e2bc55;
}

.result.invalid {
    background: #ffe8e8;
    color: #8a1111;
    border: 1px solid #e99a9a;
}

/* PRODUCTS PAGE */

.products-page {
    min-height: 100vh;
    padding: 130px 7% 70px;
    background: #f7f8f5;
}

.products-heading {
    max-width: 760px;
    margin-bottom: 50px;
}

.products-heading h1 {
    font-size: clamp(42px, 7vw, 76px);
    color: #111;
    margin-bottom: 15px;
}

.products-heading p {
    color: #526258;
    line-height: 1.7;
}

.product-row {
    display: grid;
    grid-template-columns: 45% 1fr;
    gap: 50px;
    align-items: center;
    background: white;
    padding: 35px;
    border-radius: 18px;
    box-shadow: 0 18px 45px rgba(0,0,0,0.08);
    border-bottom: 6px solid #0b6635;
    margin-bottom: 35px;
}

.product-image img {
    width: 100%;
    height: 420px;
    object-fit: cover;
    border-radius: 14px;
}

.product-info h2 {
    font-size: 38px;
    color: #111;
    margin-bottom: 18px;
}

.product-info p {
    color: #526258;
    line-height: 1.8;
    margin-bottom: 20px;
}

.product-info ul {
    margin: 20px 0 28px;
    padding-left: 20px;
    color: #334238;
    line-height: 1.9;
}

/* FOOTER */

footer {
    padding: 28px;
    text-align: center;
    background: white;
    color: #6b766d;
    font-size: 13px;
}

/* MOBILE */

@media (max-width: 850px) {


    .top-header {
        height: 88px;
        padding: 0 18px;
    }

    .logo img {
        height: 62px;
    }

    .burger {
        width: 34px;
    }

    .burger span {
        margin: 5px 0;
    }
}

    .burger span {
        margin: 5px 0;
    }

    .hero-slider {
        height: 84vh;
    }

    .hero-slide::after {
        background: linear-gradient(
            180deg,
            rgba(255,255,255,0.94) 0%,
            rgba(255,255,255,0.58) 42%,
            rgba(255,255,255,0.10) 100%
        );
    }

    .hero-text {
        width: auto;
        margin-left: 22px;
        margin-right: 22px;
        margin-top: 95px;
    }

    .hero-text h1 {
        font-size: 34px;
    }

    .tag {
        font-size: 11px;
        letter-spacing: 2px;
    }

    .desc {
        margin-top: 160px;
        margin-bottom: 14px;
        font-size: 14px;
        line-height: 1.5;
    }

    .main-btn {
        padding: 14px 24px;
        font-size: 13px;
    }

    .quality-strip {
        grid-template-columns: 1fr;
    }

    .quality-strip div {
        border-right: none;
        border-bottom: 1px solid rgba(255,255,255,0.12);
    }

    .quality-strip div:last-child {
        border-bottom: none;
    }

    .intro h2 {
        font-size: 32px;
    }

    .verify-page {
        grid-template-columns: 1fr;
        padding: 120px 24px 60px;
    }

    .verify-left h1 {
        font-size: 36px;
    }

    .verify-card-info {
        margin-top: 20px;
    }

    .products-page {
        padding: 115px 24px 55px;
    }

    .product-row {
        grid-template-columns: 1fr;
        padding: 22px;
        gap: 25px;
    }

    .product-image img {
        height: 320px;
    }

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