:root {
    --hv-ink: #252a30;
    --hv-muted: #626d78;
    --hv-paper: #fffefe;
    --hv-soft: #f4f7fa;
    --hv-line: #dfe4e9;
    --hv-red: #d2232a;
    --hv-red-dark: #a8171d;
    --hv-blue: #0069a7;
    --hv-blue-dark: #163b59;
    --hv-white: #ffffff;
    --hv-shadow: 0 22px 60px rgba(75, 33, 36, 0.14);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 92px;
}

body {
    min-width: 320px;
    color: var(--hv-ink);
    background: var(--hv-paper);
    font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
    font-size: 17px;
    line-height: 1.65;
}

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

a {
    color: inherit;
}

button,
a {
    -webkit-tap-highlight-color: transparent;
}

.hv-wrap {
    width: min(1160px, calc(100% - 48px));
    margin-inline: auto;
}

.hv-topbar {
    position: sticky;
    top: 0;
    z-index: 20;
    border-bottom: 1px solid rgba(223, 228, 233, 0.88);
    background: rgba(255, 254, 254, 0.92);
    backdrop-filter: blur(16px);
}

.hv-topbar__inner {
    min-height: 76px;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 32px;
}

.hv-brand {
    justify-self: start;
}

.hv-nav {
    display: flex;
    gap: 30px;
}

.hv-nav a {
    color: var(--hv-muted);
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
}

.hv-nav a:hover {
    color: var(--hv-red);
}

.hv-button {
    min-height: 54px;
    border: 0;
    border-radius: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    padding: 0 28px;
    font-size: 17px;
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
    transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.hv-button:hover {
    transform: translateY(-2px);
}

.hv-button--header {
    justify-self: end;
    color: var(--hv-white);
    background: var(--hv-ink);
}

.hv-button--primary {
    color: var(--hv-white);
    background: var(--hv-red);
    box-shadow: 0 14px 28px rgba(210, 35, 42, 0.24);
}

.hv-button--primary:hover {
    background: var(--hv-red-dark);
}

.hv-hero {
    position: relative;
    overflow: hidden;
    padding: 82px 0 74px;
    background:
        radial-gradient(circle at 12% 20%, rgba(210, 35, 42, 0.12), transparent 30%),
        radial-gradient(circle at 88% 75%, rgba(0, 105, 167, 0.12), transparent 32%),
        linear-gradient(145deg, #fffafa 0%, #eef5f9 100%);
}

.hv-hero::after {
    content: "";
    position: absolute;
    width: 380px;
    height: 380px;
    right: -180px;
    top: -140px;
    border: 70px solid rgba(210, 35, 42, 0.07);
    border-radius: 50%;
}

.hv-hero__layout {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: minmax(0, 0.88fr) minmax(420px, 1.12fr);
    align-items: center;
    gap: 76px;
}

.hv-eyebrow,
.hv-section-heading > p {
    margin-bottom: 14px;
    color: var(--hv-blue);
    font-size: 14px;
    font-weight: 800;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

.hv-hero__copy h1 {
    color: var(--hv-red);
    font-size: clamp(48px, 6vw, 76px);
    line-height: 1;
    letter-spacing: -0.055em;
}

.hv-hero__copy h2 {
    max-width: 620px;
    margin-top: 18px;
    font-size: clamp(30px, 3.4vw, 46px);
    line-height: 1.18;
    letter-spacing: -0.035em;
}

.hv-hero__copy > p:not(.hv-eyebrow) {
    max-width: 560px;
    margin: 22px 0 30px;
    color: var(--hv-muted);
    font-size: 18px;
}

.hv-hero__visual {
    position: relative;
    min-height: 410px;
    display: grid;
    place-items: center;
}

.hv-hero__visual img {
    position: relative;
    z-index: 1;
    width: min(100%, 590px);
    filter: drop-shadow(0 34px 34px rgba(26, 61, 88, 0.22));
}

.hv-hero__halo {
    position: absolute;
    inset: 6% 4% 5%;
    border: 1px solid rgba(0, 105, 167, 0.22);
    border-radius: 46% 54% 50% 50% / 50% 42% 58% 50%;
    background: rgba(255, 255, 255, 0.55);
    transform: rotate(-4deg);
}

.hv-overview {
    padding: 76px 0;
}

.hv-overview__layout {
    display: grid;
    grid-template-columns: 0.82fr 1.18fr;
    gap: 90px;
    align-items: start;
}

.hv-overview h2,
.hv-section-heading h2 {
    font-size: clamp(30px, 4vw, 46px);
    line-height: 1.2;
    letter-spacing: -0.035em;
}

.hv-overview__content {
    display: grid;
    gap: 14px;
    color: var(--hv-muted);
    font-size: 17px;
}

.hv-overview__content a {
    width: fit-content;
    margin-top: 10px;
    color: var(--hv-red);
    font-weight: 800;
    text-decoration-thickness: 2px;
    text-underline-offset: 5px;
}

.hv-releases {
    padding: 8px 0 72px;
}

.hv-release-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
}

.hv-release {
    position: relative;
    min-width: 0;
    border: 1px solid var(--hv-line);
    border-radius: 24px;
    padding: 30px;
    background: var(--hv-white);
    box-shadow: 0 10px 36px rgba(52, 61, 70, 0.08);
    transition: transform 180ms ease, box-shadow 180ms ease;
}

.hv-release:hover {
    transform: translateY(-5px);
    box-shadow: var(--hv-shadow);
}

.hv-release--featured {
    border: 2px solid var(--hv-red);
}

.hv-release__badge {
    position: absolute;
    top: 18px;
    right: 18px;
    border-radius: 999px;
    padding: 5px 11px;
    color: var(--hv-white);
    background: var(--hv-blue);
    font-size: 13px;
    font-weight: 800;
}

.hv-release__icon {
    width: 64px;
    height: 64px;
    object-fit: contain;
    margin-bottom: 22px;
}

.hv-release h3 {
    margin-bottom: 4px;
    font-size: 23px;
}

.hv-release__promise {
    color: var(--hv-muted);
    font-size: 15px;
}

.hv-release__rating {
    display: flex;
    gap: 26px;
    margin: 24px 0;
    padding: 18px 0;
    border-block: 1px solid var(--hv-line);
}

.hv-release__rating-item {
    display: grid;
    gap: 2px;
}

.hv-release__rating-item > span {
    color: var(--hv-muted);
    font-size: 13px;
}

.hv-release__score {
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: 800;
}

.hv-release__actions {
    display: flex;
    gap: 10px;
}

.hv-release__actions a {
    min-height: 50px;
    border: 0;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    text-decoration: none;
    cursor: pointer;
}

.hv-release__download {
    flex: 1;
    padding-inline: 16px;
    color: var(--hv-white);
    background: var(--hv-ink);
    font-weight: 800;
}

.hv-release__download--accent {
    background: var(--hv-red);
}

.hv-metrics {
    padding: 52px 0;
    color: var(--hv-white);
    background: linear-gradient(120deg, var(--hv-blue-dark), #202b36);
}

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

.hv-metric {
    display: grid;
    gap: 2px;
    text-align: center;
}

.hv-metric + .hv-metric {
    border-left: 1px solid rgba(255, 255, 255, 0.16);
}

.hv-metric strong {
    color: #ff7277;
    font-size: clamp(28px, 4vw, 42px);
    font-style: italic;
}

.hv-metric span {
    color: rgba(255, 255, 255, 0.7);
    font-size: 15px;
    font-weight: 700;
}

.hv-benefits,
.hv-reviews {
    padding: 92px 0;
}

.hv-section-heading {
    max-width: 700px;
    margin: 0 auto 46px;
    text-align: center;
}

.hv-section-heading > div {
    margin-top: 14px;
    color: var(--hv-muted);
}

.hv-benefit-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}

.hv-benefit {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 20px;
    border: 1px solid var(--hv-line);
    border-radius: 20px;
    padding: 28px;
    background: var(--hv-white);
}

.hv-benefit__number {
    width: 44px;
    height: 44px;
    border-radius: 14px;
    display: grid;
    place-items: center;
    color: var(--hv-white);
    background: var(--hv-red);
    font-size: 14px;
    font-weight: 800;
}

.hv-benefit h3 {
    margin-bottom: 6px;
    font-size: 20px;
}

.hv-benefit p {
    color: var(--hv-muted);
    font-size: 15px;
}

.hv-reviews {
    background: var(--hv-soft);
}

.hv-review-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

.hv-review {
    min-height: 250px;
    border: 1px solid rgba(223, 228, 233, 0.9);
    border-radius: 20px;
    padding: 26px;
    display: flex;
    flex-direction: column;
    background: var(--hv-white);
}

.hv-review header {
    display: flex;
    align-items: center;
    gap: 12px;
}

.hv-review__avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    flex: 0 0 auto;
    color: var(--hv-white);
    background: var(--hv-blue);
    font-size: 14px;
    font-weight: 800;
}

.hv-review h3 {
    font-size: 16px;
}

.hv-review header p {
    color: var(--hv-muted);
    font-size: 13px;
}

.hv-review__quote {
    margin: 22px 0;
    color: var(--hv-muted);
    font-size: 15px;
}

.hv-review__stars {
    width: auto;
    height: 18px;
    margin-top: auto;
    align-self: flex-start;
}

[data-reveal] {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 500ms ease, transform 500ms ease;
}

[data-reveal].is-visible {
    opacity: 1;
    transform: none;
}

.hv-cta {
    position: relative;
    overflow: hidden;
    padding: 90px 0;
    color: var(--hv-white);
    background:
        radial-gradient(circle at 16% 24%, rgba(0, 105, 167, 0.34), transparent 28%),
        linear-gradient(135deg, #a8171d, #d2232a 52%, #8f151b 100%);
    text-align: center;
}

.hv-cta__content {
    position: relative;
    z-index: 1;
}

.hv-cta__rating {
    display: flex;
    justify-content: center;
    gap: 10px;
}

.hv-cta__rating span {
    color: #ffd567;
    letter-spacing: 0.08em;
}

.hv-avatars {
    display: flex;
    justify-content: center;
    margin: 20px 0 10px;
}

.hv-avatars span {
    width: 34px;
    height: 34px;
    margin-left: -7px;
    border: 2px solid var(--hv-red-dark);
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: var(--hv-blue);
    font-size: 13px;
}

.hv-avatars span:nth-child(even) {
    background: #ef4c52;
}

.hv-cta__content > p {
    margin-bottom: 14px;
    color: rgba(255, 255, 255, 0.72);
}

.hv-cta h2 {
    margin: 22px 0 14px;
    font-size: clamp(34px, 5vw, 56px);
    line-height: 1.2;
    letter-spacing: -0.035em;
}

.hv-button--light {
    margin-top: 14px;
    color: var(--hv-red-dark);
    background: var(--hv-white);
}

.hv-footer {
    padding: 30px 0;
    color: rgba(255, 255, 255, 0.58);
    background: #24282d;
    font-size: 14px;
    text-align: center;
}

.hv-footer__records {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px 22px;
}

@media (max-width: 900px) {
    .hv-topbar__inner {
        grid-template-columns: 1fr auto;
    }

    .hv-nav {
        display: none;
    }

    .hv-hero__layout,
    .hv-overview__layout {
        grid-template-columns: 1fr;
    }

    .hv-hero__layout {
        gap: 42px;
    }

    .hv-hero__copy {
        max-width: 660px;
        text-align: center;
        margin-inline: auto;
    }

    .hv-hero__copy > p:not(.hv-eyebrow) {
        margin-inline: auto;
    }

    .hv-hero__visual {
        min-height: 340px;
    }

    .hv-overview__layout {
        gap: 28px;
    }

    .hv-release-grid,
    .hv-review-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 620px) {
    .hv-wrap {
        width: min(100% - 32px, 1160px);
    }

    .hv-topbar__inner {
        min-height: 66px;
    }

    .hv-brand img {
        width: 96px;
    }

    .hv-button--header {
        min-height: 46px;
        padding-inline: 18px;
        font-size: 14px;
    }

    .hv-button--header img {
        display: none;
    }

    .hv-hero {
        padding: 58px 0 42px;
    }

    .hv-hero__copy h1 {
        font-size: 46px;
    }

    .hv-hero__copy h2 {
        font-size: 31px;
    }

    .hv-hero__visual {
        min-height: 230px;
    }

    .hv-overview,
    .hv-benefits,
    .hv-reviews,
    .hv-cta {
        padding: 64px 0;
    }

    .hv-release-grid,
    .hv-benefit-grid,
    .hv-review-grid {
        grid-template-columns: 1fr;
    }

    .hv-metrics__grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 28px 0;
    }

    .hv-metric:nth-child(3) {
        border-left: 0;
    }

    .hv-benefit {
        padding: 22px;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
    }
}