:root {
    --ink: #101426;
    --muted: #58617c;
    --white: #ffffff;
    --violet: #4c1d95;
    --violet-2: #6d28d9;
    --blue: #0877ff;
    --cyan: #00c2ff;
    --line: rgba(76, 29, 149, .14);
    --shadow: 0 18px 42px rgba(21, 33, 95, .18);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-width: 320px;
    color: var(--ink);
    font-family: Arial, Helvetica, sans-serif;
    background:
        radial-gradient(circle at 12% 4%, rgba(0, 194, 255, .2), transparent 23rem),
        radial-gradient(circle at 86% 12%, rgba(109, 40, 217, .2), transparent 24rem),
        linear-gradient(180deg, #f8fbff 0%, #eef4ff 48%, #f9fbff 100%);
}

img {
    display: block;
    max-width: 100%;
}

a {
    color: inherit;
}

h1,
h2,
h3,
p {
    margin-top: 0;
}

h1 {
    max-width: 790px;
    margin-bottom: 0;
    font-size: clamp(36px, 5.6vw, 72px);
    line-height: .98;
    letter-spacing: 0;
}

h2 {
    margin-bottom: 16px;
    font-size: clamp(30px, 4vw, 50px);
    line-height: 1.05;
    letter-spacing: 0;
}

h3 {
    margin-bottom: 10px;
    font-size: 21px;
    line-height: 1.16;
}

p {
    line-height: 1.56;
}

.page-shell {
    overflow: hidden;
}

.container {
    width: min(1140px, calc(100% - 32px));
    margin: 0 auto;
}

.section {
    position: relative;
    padding: 68px 0;
}

.eyebrow {
    margin: 0 0 12px;
    color: var(--blue);
    font-size: 13px;
    font-weight: 900;
    letter-spacing: 0;
    text-transform: uppercase;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 62px;
    padding: 0 34px;
    border: 0;
    border-radius: 8px;
    color: var(--white);
    cursor: pointer;
    font-size: 18px;
    font-weight: 900;
    letter-spacing: .8px;
    text-align: center;
    text-decoration: none;
    text-transform: uppercase;
    transition: transform .24s ease, box-shadow .24s ease, filter .24s ease;
}

.btn--primary {
    background: linear-gradient(135deg, #006cff 0%, #00b7ff 48%, #5a2cff 100%);
    box-shadow:
        0 16px 30px rgba(0, 111, 255, .32),
        0 0 0 1px rgba(255, 255, 255, .25) inset,
        0 -6px 16px rgba(20, 23, 90, .22) inset;
    animation: buttonPulse 2.1s ease-in-out infinite;
}

.btn--primary:hover {
    transform: translateY(-3px);
    filter: saturate(1.12) brightness(1.04);
    box-shadow:
        0 24px 42px rgba(0, 111, 255, .42),
        0 0 24px rgba(0, 194, 255, .4),
        0 0 0 1px rgba(255, 255, 255, .34) inset;
}

.hero {
    min-height: 100svh;
    padding: 42px 0 48px;
    display: flex;
    align-items: center;
    background:
        linear-gradient(145deg, rgba(76, 29, 149, .08), rgba(8, 119, 255, .08)),
        linear-gradient(180deg, #ffffff, #edf5ff);
}

.hero__grid {
    display: grid;
    grid-template-columns: minmax(0, .92fr) minmax(410px, 1fr);
    grid-template-areas:
        "intro visual"
        "content visual";
    gap: 26px 54px;
    align-items: center;
}

.hero__intro {
    grid-area: intro;
}

.hero__content {
    grid-area: content;
    max-width: 520px;
}

.hero__lead {
    color: var(--muted);
    font-size: 21px;
}

.hero__visual {
    grid-area: visual;
    position: relative;
    isolation: isolate;
}

.hero__glow {
    position: absolute;
    inset: 11% 4% 8%;
    z-index: -1;
    border-radius: 8px;
    background:
        radial-gradient(circle at 40% 42%, rgba(0, 194, 255, .78), rgba(8, 119, 255, .22) 48%, transparent 70%),
        linear-gradient(135deg, rgba(109, 40, 217, .38), rgba(0, 194, 255, .12));
    filter: blur(8px);
    animation: glowPulse 3s ease-in-out infinite;
}

.hero__image {
    width: 100%;
    border: 1px solid rgba(255, 255, 255, .8);
    border-radius: 8px;
    box-shadow: var(--shadow);
    animation: heroFloat 3.5s ease-in-out infinite;
}

.hero__badge {
    position: absolute;
    right: 4%;
    bottom: 7%;
    max-width: 210px;
    padding: 13px 16px;
    border-radius: 8px;
    color: #fff;
    background: linear-gradient(135deg, var(--violet), var(--blue));
    box-shadow: 0 16px 28px rgba(31, 49, 126, .26);
    font-weight: 900;
}

.hero__content > .btn {
    width: 100%;
    margin: 6px 0 18px;
}

.price-box {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    width: 100%;
}

.price-box > div {
    min-height: 92px;
    padding: 14px 16px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: rgba(255, 255, 255, .82);
    box-shadow: 0 12px 24px rgba(34, 50, 112, .1);
}

.price-box span {
    display: block;
    margin-bottom: 6px;
    color: var(--muted);
    font-size: 12px;
    font-weight: 900;
    text-transform: uppercase;
}

.price-box strong {
    display: block;
}

.price-box__old strong {
    color: #8d93a8;
    font-size: 25px;
    text-decoration: line-through;
}

.price-box__new strong {
    color: var(--blue);
    font-size: 38px;
}

.price-box .price-box__save {
    grid-column: 1 / -1;
    min-height: auto;
    color: #fff;
    background: linear-gradient(135deg, var(--violet), var(--blue));
    font-size: 18px;
    font-weight: 900;
    text-align: center;
}

.hero__checks {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 18px;
}

.hero__checks span {
    padding: 10px 12px;
    border: 1px solid rgba(8, 119, 255, .16);
    border-radius: 8px;
    background: rgba(255, 255, 255, .76);
    color: #293052;
    font-size: 14px;
    font-weight: 800;
}

.order-panel {
    padding-top: 34px;
}

.order-panel__grid,
.benefits__grid,
.problem__grid,
.final-order__grid,
.reviews__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 36px;
    align-items: center;
}

.order-panel__grid {
    padding: 26px;
    border: 1px solid rgba(255, 255, 255, .72);
    border-radius: 8px;
    background: linear-gradient(135deg, rgba(255, 255, 255, .94), rgba(229, 239, 255, .82));
    box-shadow: var(--shadow);
}

.section-copy p {
    color: var(--muted);
    font-size: 18px;
}

.order-form {
    display: grid;
    gap: 14px;
    padding: 22px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #fff;
    box-shadow: 0 18px 36px rgba(31, 49, 126, .13);
}

.order-form h3 {
    margin: 0;
}

.order-form label {
    display: grid;
    gap: 8px;
    color: #2b3354;
    font-size: 14px;
    font-weight: 900;
}

.order-form input {
    width: 100%;
    min-height: 58px;
    padding: 0 18px 0 52px;
    border: 2px solid #dbe6ff;
    border-radius: 8px;
    color: var(--ink);
    font-size: 17px;
    outline: none;
    transition: border-color .2s ease, box-shadow .2s ease;
}

.order-form input[name="name"] {
    background: #f9fbff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='22' height='22' viewBox='0 0 24 24' fill='none' stroke='%230877ff' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 21a8 8 0 0 0-16 0'/%3E%3Ccircle cx='12' cy='7' r='4'/%3E%3C/svg%3E") 17px center no-repeat;
}

.order-form input[name="phone"] {
    background: #f9fbff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='22' height='22' viewBox='0 0 24 24' fill='none' stroke='%230877ff' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M22 16.92v3a2 2 0 0 1-2.18 2 19.8 19.8 0 0 1-8.63-3.07 19.5 19.5 0 0 1-6-6A19.8 19.8 0 0 1 2.12 4.18 2 2 0 0 1 4.11 2h3a2 2 0 0 1 2 1.72c.12.9.32 1.77.57 2.61a2 2 0 0 1-.45 2.11L8.09 9.91a16 16 0 0 0 6 6l1.47-1.14a2 2 0 0 1 2.11-.45c.84.25 1.71.45 2.61.57A2 2 0 0 1 22 16.92z'/%3E%3C/svg%3E") 17px center no-repeat;
}

.order-form input:focus {
    border-color: var(--blue);
    box-shadow: 0 0 0 4px rgba(8, 119, 255, .14);
}

.order-form small {
    color: var(--muted);
    text-align: center;
}

.benefits {
    background: linear-gradient(135deg, rgba(76, 29, 149, .08), rgba(0, 194, 255, .08));
}

.feature-list {
    display: grid;
    gap: 12px;
}

.feature-list article,
.final-card,
.review-card,
.instruction-card {
    border: 1px solid var(--line);
    border-radius: 8px;
    background: rgba(255, 255, 255, .9);
    box-shadow: 0 14px 30px rgba(31, 49, 126, .11);
}

.feature-list article {
    padding: 18px;
}

.feature-list span {
    display: inline-flex;
    width: 36px;
    height: 36px;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
    border-radius: 8px;
    color: #fff;
    background: linear-gradient(135deg, var(--blue), var(--violet-2));
    font-weight: 900;
}

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

.instruction-card {
    overflow: hidden;
    padding: 10px;
}

.instruction-card img {
    width: 100%;
    border-radius: 8px;
}

.problem img {
    width: 100%;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.check-list {
    display: grid;
    gap: 10px;
    margin: 20px 0 0;
    padding: 0;
    list-style: none;
}

.check-list li {
    position: relative;
    padding-left: 30px;
    color: var(--muted);
    line-height: 1.45;
}

.check-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 4px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--blue), var(--cyan));
}

.section-head {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 22px;
}

.slider-controls {
    display: flex;
    gap: 10px;
}

.icon-btn {
    width: 48px;
    height: 48px;
    border: 0;
    border-radius: 8px;
    color: #fff;
    background: linear-gradient(135deg, var(--blue), var(--violet-2));
    box-shadow: 0 14px 26px rgba(8, 119, 255, .24);
    cursor: pointer;
    font-size: 34px;
    line-height: 1;
    transition: transform .2s ease, filter .2s ease;
}

.icon-btn:hover {
    transform: translateY(-2px);
    filter: brightness(1.08);
}

.gallery__track {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
}

.gallery__track img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    border: 1px solid rgba(255, 255, 255, .82);
    border-radius: 8px;
    box-shadow: 0 14px 30px rgba(31, 49, 126, .14);
}

.reviews {
    color: #fff;
    background: linear-gradient(135deg, #171044 0%, #1c3f8f 54%, #111934 100%);
}

.reviews .eyebrow {
    color: #9bdcff;
}

.reviews .section-copy p {
    color: rgba(255, 255, 255, .78);
}

.review-slider {
    position: relative;
    min-height: 335px;
}

.review-card {
    position: absolute;
    inset: 0;
    display: grid;
    align-content: center;
    gap: 15px;
    padding: 30px;
    color: var(--ink);
    opacity: 0;
    transform: translateX(34px) scale(.98);
    transition: opacity .5s ease, transform .5s ease;
}

.review-card.is-active {
    opacity: 1;
    transform: translateX(0) scale(1);
}

.review-card p {
    margin: 0;
    color: #303850;
    font-size: 19px;
}

.review-card strong {
    color: var(--violet-2);
    font-size: 18px;
}

.stars {
    color: #ffb800;
    font-size: 22px;
    letter-spacing: 2px;
}

.final-order {
    padding-bottom: 82px;
}

.final-card {
    padding: 26px;
    background: linear-gradient(135deg, #ffffff, #edf5ff);
}

.final-card img {
    width: 100%;
    margin-top: 18px;
    border-radius: 8px;
    box-shadow: 0 14px 28px rgba(31, 49, 126, .12);
}

.price-box--light > div {
    background: rgba(255, 255, 255, .92);
}

footer {
    padding: 30px 16px;
    color: rgba(255, 255, 255, .78);
    background: #111735;
    font-size: 13px;
    line-height: 1.5;
    text-align: center;
}

footer p {
    margin-bottom: 8px;
}

footer a {
    color: rgba(255, 255, 255, .88);
    text-decoration: none;
}

@keyframes buttonPulse {
    0%,
    100% {
        box-shadow:
            0 16px 30px rgba(0, 111, 255, .32),
            0 0 0 1px rgba(255, 255, 255, .25) inset,
            0 -6px 16px rgba(20, 23, 90, .22) inset;
    }

    50% {
        box-shadow:
            0 18px 44px rgba(0, 111, 255, .52),
            0 0 26px rgba(0, 194, 255, .4),
            0 0 0 1px rgba(255, 255, 255, .34) inset,
            0 -6px 16px rgba(20, 23, 90, .22) inset;
    }
}

@keyframes heroFloat {
    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

@keyframes glowPulse {
    0%,
    100% {
        transform: scale(.96);
        opacity: .75;
    }

    50% {
        transform: scale(1.04);
        opacity: 1;
    }
}

@media (max-width: 960px) {
    .section {
        padding: 54px 0;
    }

    .hero {
        min-height: auto;
        padding-top: 30px;
    }

    .hero__grid {
        grid-template-columns: 1fr;
        grid-template-areas:
            "intro"
            "visual"
            "content";
        gap: 18px;
    }

    .hero__visual {
        width: min(100%, 600px);
        margin: 0 auto;
    }

    .order-panel__grid,
    .benefits__grid,
    .problem__grid,
    .final-order__grid,
    .reviews__grid {
        grid-template-columns: 1fr;
    }

    .gallery__track {
        grid-auto-flow: column;
        grid-auto-columns: minmax(260px, 72%);
        grid-template-columns: none;
        overflow-x: auto;
        padding: 4px 4px 20px;
        scroll-snap-type: x mandatory;
        scrollbar-width: thin;
    }

    .gallery__track img {
        scroll-snap-align: start;
    }
}

@media (max-width: 560px) {
    .container {
        width: min(100% - 22px, 480px);
    }

    .hero {
        padding: 24px 0 38px;
    }

    h1 {
        font-size: 38px;
    }

    h2 {
        font-size: 30px;
    }

    .hero__lead,
    .section-copy p {
        font-size: 17px;
    }

    .hero__badge {
        right: 3%;
        bottom: 4%;
        max-width: 170px;
        font-size: 13px;
    }

    .btn {
        width: 100%;
        min-height: 58px;
        padding: 0 18px;
        font-size: 16px;
    }

    .order-panel__grid,
    .order-form,
    .final-card,
    .review-card {
        padding: 18px;
    }

    .price-box {
        grid-template-columns: 1fr 1fr;
        gap: 10px;
    }

    .price-box > div {
        padding: 12px;
    }

    .price-box__old strong {
        font-size: 22px;
    }

    .price-box__new strong {
        font-size: 32px;
    }

    .section-head {
        align-items: start;
        flex-direction: column;
    }

    .gallery__track {
        grid-auto-columns: 88%;
        gap: 12px;
    }

    .review-slider {
        min-height: 425px;
    }

    .review-card p {
        font-size: 17px;
    }
}