:root {
    --ink: oklch(16% 0.018 155);
    --ink-2: oklch(23% 0.025 155);
    --leaf: oklch(73% 0.18 138);
    --leaf-2: oklch(63% 0.18 136);
    --amber: oklch(78% 0.17 76);
    --red: oklch(62% 0.23 28);
    --paper: oklch(97% 0.014 118);
    --paper-2: oklch(92% 0.03 125);
    --night: oklch(13% 0.028 162);
    --night-2: oklch(20% 0.045 155);
    --muted: oklch(55% 0.025 145);
    --line: oklch(25% 0.03 150 / 0.16);
    --line-light: oklch(96% 0.015 120 / 0.16);
    --shadow: 0 28px 80px oklch(12% 0.025 150 / 0.24);
    --soft-shadow: 0 18px 54px oklch(18% 0.025 150 / 0.14);
    --radius: 8px;
    --max: 1180px;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    font-family: "Montserrat", Arial, sans-serif;
    color: var(--ink);
    background:
        linear-gradient(90deg, oklch(70% 0.04 130 / 0.12) 1px, transparent 1px),
        linear-gradient(0deg, oklch(70% 0.04 130 / 0.12) 1px, transparent 1px),
        var(--paper);
    background-size: 92px 92px;
    line-height: 1.55;
    overflow-x: hidden;
}

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

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

button,
input {
    font: inherit;
}

button {
    cursor: pointer;
}

.skip-link {
    position: fixed;
    z-index: 1000;
    top: 12px;
    left: 12px;
    transform: translateY(-180%);
    padding: 10px 14px;
    color: var(--ink);
    background: var(--paper);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    transition: transform 180ms ease-out;
}

.skip-link:focus {
    transform: translateY(0);
}

.topbar {
    position: sticky;
    top: 0;
    z-index: 50;
    width: min(var(--max), calc(100% - 28px));
    margin: 14px auto 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 22px;
    padding: 10px 14px 10px 10px;
    background: oklch(17% 0.024 153 / 0.94);
    color: var(--paper);
    border: 1px solid var(--line-light);
    border-radius: var(--radius);
    box-shadow: var(--soft-shadow);
}

.brand {
    display: inline-flex;
    align-items: center;
    min-height: 50px;
    color: var(--paper);
    font-size: 24px;
    font-weight: 900;
    line-height: 1;
}

.brand span {
    display: grid;
    place-items: center;
    align-self: stretch;
    padding: 0 12px;
    color: var(--amber);
    background: oklch(11% 0.02 155);
}

.brand b {
    padding: 0 12px 0 8px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: clamp(12px, 2vw, 28px);
    color: oklch(90% 0.018 120 / 0.78);
    font-weight: 800;
    font-size: 15px;
}

.nav-links a {
    padding: 10px 0;
    transition: color 160ms ease-out;
}

.nav-links a:hover {
    color: var(--paper);
}

.top-price {
    white-space: nowrap;
    padding: 14px 18px;
    color: var(--ink);
    background: var(--leaf);
    border-radius: var(--radius);
    font-weight: 900;
    box-shadow: 0 10px 28px oklch(65% 0.18 136 / 0.28);
}

.section-dark {
    color: var(--paper);
    background:
        radial-gradient(circle at 74% 28%, oklch(52% 0.16 140 / 0.34), transparent 34%),
        linear-gradient(120deg, var(--night), oklch(18% 0.045 165) 55%, oklch(19% 0.07 125));
}

.hero {
    min-height: calc(100svh - 76px);
    margin-top: -76px;
    padding: 140px 24px 54px;
    display: flex;
    align-items: center;
}

.hero-grid,
.detail-hero,
.order-section,
.quick-strip,
.gallery-section,
.set-section,
.specs-section,
.reviews-section,
.benefit-grid,
.footer {
    width: min(var(--max), calc(100% - 28px));
    margin-inline: auto;
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1.1fr);
    gap: clamp(28px, 4vw, 60px);
    align-items: center;
}

.eyebrow {
    margin: 0 0 16px;
    color: var(--leaf);
    font-size: 14px;
    line-height: 1.2;
    font-weight: 900;
    text-transform: uppercase;
}

.eyebrow::before {
    content: "";
    display: inline-block;
    width: 36px;
    height: 4px;
    margin-right: 12px;
    vertical-align: 0.2em;
    background: var(--amber);
    border-radius: 999px;
}

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

h1 {
    max-width: 760px;
    margin-bottom: 22px;
    font-size: clamp(44px, 7vw, 96px);
    line-height: 0.96;
    font-weight: 900;
}

h2 {
    margin-bottom: 18px;
    font-size: clamp(34px, 5vw, 68px);
    line-height: 1.02;
    font-weight: 900;
}

h3 {
    font-size: clamp(22px, 2.4vw, 32px);
    line-height: 1.1;
    font-weight: 900;
}

.lead {
    max-width: 680px;
    color: oklch(88% 0.016 120 / 0.78);
    font-size: clamp(17px, 1.6vw, 22px);
    line-height: 1.75;
}

.hero-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 30px 0 24px;
}

.hero-badges span,
.callout,
.photo-card span,
.sale-mark {
    border-radius: 999px;
    font-weight: 900;
}

.hero-badges span {
    padding: 12px 16px;
    color: var(--paper);
    background: oklch(97% 0.015 120 / 0.1);
    border: 1px solid var(--line-light);
}

.price-panel {
    width: min(560px, 100%);
    display: grid;
    gap: 16px;
    padding: 22px;
    background: oklch(18% 0.035 160 / 0.74);
    border: 1px solid var(--line-light);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.price-label {
    display: block;
    color: oklch(88% 0.015 120 / 0.7);
    font-weight: 800;
}

.price-panel strong,
.order-price strong,
.sticky-buy strong {
    color: var(--leaf);
    font-weight: 900;
}

.price-panel strong {
    display: block;
    margin-top: 2px;
    font-size: clamp(62px, 9vw, 108px);
    line-height: 0.9;
}

.price-panel small {
    color: var(--paper);
    font-size: 34px;
}

.price-panel p {
    margin: 0;
    color: var(--amber);
    font-size: 18px;
    font-weight: 900;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 22px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 58px;
    padding: 0 24px;
    border: 0;
    border-radius: var(--radius);
    font-weight: 900;
    transition: transform 170ms ease-out, box-shadow 170ms ease-out, background 170ms ease-out;
}

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

.button-primary {
    color: var(--ink);
    background: linear-gradient(135deg, var(--leaf), oklch(78% 0.18 128));
    box-shadow: 0 20px 40px oklch(65% 0.18 136 / 0.28);
}

.button-secondary {
    color: var(--paper);
    background: oklch(96% 0.018 120 / 0.1);
    border: 1px solid var(--line-light);
}

.hero-stage {
    position: relative;
    min-height: 700px;
    display: grid;
    place-items: center;
    border: 1px solid var(--line-light);
    border-radius: var(--radius);
    overflow: hidden;
    background:
        radial-gradient(circle at 50% 50%, oklch(64% 0.18 138 / 0.28), transparent 36%),
        linear-gradient(135deg, oklch(17% 0.03 170), oklch(23% 0.06 132));
}

.stage-grid {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(90deg, oklch(92% 0.02 130 / 0.08) 1px, transparent 1px),
        linear-gradient(0deg, oklch(92% 0.02 130 / 0.08) 1px, transparent 1px);
    background-size: 86px 86px;
}

.stage-grid::after {
    content: "";
    position: absolute;
    inset: 16%;
    border: 3px dashed oklch(70% 0.18 138 / 0.5);
    border-radius: 999px;
    animation: slowSpin 18s linear infinite;
}

.hero-product {
    position: relative;
    z-index: 2;
    width: min(88%, 820px);
    filter: drop-shadow(0 28px 40px oklch(8% 0.02 150 / 0.45));
    transform: translateX(2%);
    animation: hoverTool 5.5s ease-in-out infinite;
}

.callout {
    position: absolute;
    z-index: 3;
    padding: 14px 22px;
    color: var(--ink);
    background: var(--paper);
    border: 1px solid oklch(75% 0.08 140 / 0.5);
    box-shadow: var(--soft-shadow);
}

.callout-top {
    top: 70px;
    left: 42px;
}

.callout-right {
    right: 36px;
    top: 45%;
}

.callout-bottom {
    left: 58px;
    bottom: 70px;
}

.sale-mark {
    position: absolute;
    z-index: 3;
    right: 48px;
    top: 74px;
    width: 148px;
    height: 148px;
    display: grid;
    place-items: center;
    text-align: center;
    color: oklch(98% 0.008 120);
    background: var(--red);
    box-shadow: 0 20px 50px oklch(60% 0.22 28 / 0.38);
    transform: rotate(10deg);
}

.quick-strip {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    margin-top: -1px;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--soft-shadow);
}

.quick-strip div {
    padding: 28px;
    background: var(--paper);
}

.quick-strip b {
    display: block;
    margin-bottom: 8px;
    font-size: 22px;
    font-weight: 900;
}

.quick-strip span {
    color: var(--muted);
    font-weight: 700;
}

.gallery-section,
.set-section,
.specs-section,
.reviews-section {
    padding: clamp(58px, 8vw, 112px) 0;
}

.section-head {
    max-width: 760px;
    margin-bottom: 32px;
}

.feature-wall {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
}

.photo-card {
    position: relative;
    min-height: 270px;
    overflow: hidden;
    border-radius: var(--radius);
    border: 1px solid var(--line);
    background: var(--paper-2);
    box-shadow: var(--soft-shadow);
}

.photo-card-large {
    grid-column: span 2;
    grid-row: span 2;
    min-height: 560px;
}

.photo-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 500ms ease-out;
}

.photo-card:hover img {
    transform: scale(1.035);
}

.photo-card span {
    position: absolute;
    left: 18px;
    bottom: 18px;
    max-width: calc(100% - 36px);
    padding: 13px 18px;
    color: var(--ink);
    background: var(--amber);
    box-shadow: var(--soft-shadow);
}

.detail-hero {
    display: grid;
    grid-template-columns: minmax(0, 0.95fr) minmax(360px, 0.75fr);
    gap: 32px;
    align-items: center;
    padding: clamp(50px, 7vw, 90px);
    border-radius: var(--radius);
    border: 1px solid var(--line-light);
    box-shadow: var(--shadow);
}

.detail-copy p:not(.eyebrow),
.order-copy p,
.mechanics-card p {
    color: oklch(88% 0.015 120 / 0.76);
    font-size: 18px;
}

.metric-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-top: 28px;
}

.metric-row div {
    padding: 18px;
    border: 1px solid var(--line-light);
    border-radius: var(--radius);
    background: oklch(97% 0.015 120 / 0.08);
}

.metric-row strong {
    display: block;
    color: var(--leaf);
    font-size: 34px;
    line-height: 1;
    font-weight: 900;
}

.metric-row span {
    color: oklch(90% 0.014 120 / 0.72);
    font-weight: 800;
}

.mechanics-card {
    padding: 22px;
    border: 1px solid var(--line-light);
    border-radius: var(--radius);
    background: oklch(14% 0.024 160 / 0.68);
}

.chain-visual {
    position: relative;
    height: 260px;
    margin-bottom: 24px;
    overflow: hidden;
    border-radius: var(--radius);
    background: oklch(9% 0.018 160);
    border: 1px solid var(--line-light);
}

.chain-visual span {
    position: absolute;
    left: -15%;
    width: 130%;
    height: 26px;
    border-top: 6px solid oklch(69% 0.02 120);
    border-bottom: 6px solid oklch(69% 0.02 120);
    background: repeating-linear-gradient(90deg, oklch(82% 0.018 120) 0 20px, oklch(30% 0.02 130) 20px 30px);
    transform: rotate(-18deg);
    animation: chainMove 1s linear infinite;
}

.chain-visual span:nth-child(1) {
    top: 54px;
}

.chain-visual span:nth-child(2) {
    top: 126px;
    animation-direction: reverse;
}

.chain-visual span:nth-child(3) {
    top: 198px;
}

.benefit-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    padding: clamp(54px, 8vw, 100px) 0;
}

.benefit-grid article {
    padding: 28px;
    border-radius: var(--radius);
    border: 1px solid var(--line);
    background: oklch(98% 0.012 118);
    box-shadow: var(--soft-shadow);
}

.num {
    display: block;
    margin-bottom: 42px;
    color: var(--leaf-2);
    font-weight: 900;
}

.benefit-grid p,
.reviews-grid p,
.set-copy li,
.specs-grid span,
.form-note,
.footer {
    color: var(--muted);
    font-weight: 700;
}

.set-card {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.8fr);
    gap: 30px;
    align-items: stretch;
}

.set-image,
.set-copy {
    border-radius: var(--radius);
    border: 1px solid var(--line);
    box-shadow: var(--soft-shadow);
}

.set-image {
    overflow: hidden;
    background: var(--night);
}

.set-image img {
    width: 100%;
    height: 100%;
    min-height: 520px;
    object-fit: cover;
}

.set-copy {
    padding: clamp(28px, 4vw, 54px);
    background: oklch(98% 0.012 118);
}

.check-list {
    list-style: none;
    margin: 28px 0 0;
    padding: 0;
}

.check-list li {
    padding: 16px 0;
    border-bottom: 1px solid var(--line);
    font-size: 18px;
}

.check-list li::before {
    content: "";
    display: inline-block;
    width: 10px;
    height: 10px;
    margin-right: 12px;
    border-radius: 50%;
    background: var(--leaf);
}

.specs-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

.specs-grid div {
    min-height: 134px;
    padding: 22px;
    border-radius: var(--radius);
    color: var(--paper);
    background: linear-gradient(135deg, var(--night), var(--night-2));
    border: 1px solid var(--line-light);
}

.specs-grid span {
    display: block;
    margin-bottom: 16px;
    color: oklch(88% 0.015 120 / 0.7);
}

.specs-grid strong {
    display: block;
    font-size: 28px;
    line-height: 1.1;
    font-weight: 900;
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.reviews-grid article {
    padding: 28px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: oklch(98% 0.012 118);
    box-shadow: var(--soft-shadow);
}

.reviews-grid b,
.reviews-grid span {
    display: block;
    font-weight: 900;
}

.reviews-grid span {
    width: max-content;
    margin: 12px 0 18px;
    padding: 8px 12px;
    color: var(--ink);
    background: var(--amber);
    border-radius: 999px;
}

.order-section {
    display: grid;
    grid-template-columns: minmax(0, 0.95fr) minmax(360px, 0.9fr);
    gap: 34px;
    padding: clamp(56px, 8vw, 94px);
    border-radius: var(--radius);
}

.order-copy p {
    max-width: 660px;
}

.order-price {
    width: max-content;
    min-width: 230px;
    margin-top: 44px;
    padding: 20px 24px;
    color: var(--ink);
    background: var(--amber);
    border-radius: var(--radius);
}

.order-price span {
    display: block;
    font-weight: 900;
}

.order-price strong {
    display: block;
    color: var(--ink);
    font-size: 44px;
    line-height: 1;
}

.order-form {
    display: grid;
    gap: 18px;
    padding: clamp(24px, 4vw, 38px);
    border-radius: var(--radius);
    color: var(--ink);
    background: var(--paper);
    box-shadow: var(--shadow);
}

.order-form label {
    display: grid;
    gap: 8px;
    font-size: 16px;
    font-weight: 900;
}

.order-form input {
    width: 100%;
    min-height: 60px;
    padding: 0 18px;
    color: var(--ink);
    background: oklch(99% 0.01 118);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    outline: none;
}

.order-form input:focus {
    border-color: var(--leaf-2);
    box-shadow: 0 0 0 4px oklch(72% 0.18 138 / 0.18);
}

.form-note {
    margin: 0;
    font-size: 13px;
}

.sticky-buy {
    position: fixed;
    z-index: 60;
    right: 24px;
    bottom: 24px;
    width: min(480px, calc(100% - 48px));
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: 14px;
    color: var(--paper);
    background: oklch(16% 0.026 155 / 0.96);
    border: 1px solid var(--line-light);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.sticky-buy span {
    display: block;
    color: oklch(88% 0.015 120 / 0.64);
    font-weight: 800;
}

.sticky-buy strong {
    font-size: 34px;
}

.footer {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 18px;
    padding: 38px 0 110px;
    font-size: 14px;
}

@keyframes hoverTool {
    0%,
    100% {
        transform: translateX(2%) translateY(0);
    }
    50% {
        transform: translateX(2%) translateY(-12px);
    }
}

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

@keyframes chainMove {
    from {
        background-position: 0 0;
    }
    to {
        background-position: 60px 0;
    }
}

.reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 520ms ease-out, transform 520ms ease-out;
}

.reveal.in {
    opacity: 1;
    transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 1ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
        transition-duration: 1ms !important;
    }
}

@media (max-width: 1040px) {
    .nav-links {
        display: none;
    }

    .hero {
        min-height: auto;
        padding-top: 124px;
    }

    .hero-grid,
    .detail-hero,
    .set-card,
    .order-section {
        grid-template-columns: 1fr;
    }

    .hero-stage {
        min-height: 560px;
        order: -1;
    }

    .feature-wall,
    .specs-grid,
    .benefit-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .photo-card-large {
        min-height: 440px;
    }
}

@media (max-width: 720px) {
    body {
        background-size: 58px 58px;
    }

    .topbar {
        width: calc(100% - 18px);
        margin-top: 9px;
        gap: 10px;
    }

    .brand {
        min-height: 44px;
        font-size: 20px;
    }

    .top-price {
        padding: 12px 12px;
        font-size: 14px;
    }

    .hero {
        margin-top: -66px;
        padding: 104px 10px 42px;
    }

    .hero-grid,
    .detail-hero,
    .order-section,
    .quick-strip,
    .gallery-section,
    .set-section,
    .specs-section,
    .reviews-section,
    .benefit-grid,
    .footer {
        width: calc(100% - 18px);
    }

    h1 {
        font-size: clamp(38px, 13vw, 58px);
    }

    h2 {
        font-size: clamp(30px, 9vw, 46px);
    }

    .lead,
    .detail-copy p:not(.eyebrow),
    .order-copy p,
    .mechanics-card p {
        font-size: 16px;
    }

    .hero-stage {
        min-height: 470px;
    }

    .hero-product {
        width: 112%;
        transform: translateX(-4%);
    }

    .callout {
        padding: 10px 14px;
        font-size: 13px;
    }

    .callout-top {
        top: 28px;
        left: 18px;
    }

    .callout-right {
        right: 14px;
        top: 50%;
    }

    .callout-bottom {
        left: 18px;
        bottom: 30px;
    }

    .sale-mark {
        right: 14px;
        top: 24px;
        width: 104px;
        height: 104px;
        font-size: 15px;
    }

    .quick-strip,
    .feature-wall,
    .benefit-grid,
    .specs-grid,
    .reviews-grid,
    .metric-row {
        grid-template-columns: 1fr;
    }

    .quick-strip div,
    .benefit-grid article {
        padding: 22px;
    }

    .photo-card,
    .photo-card-large {
        grid-column: auto;
        grid-row: auto;
        min-height: 320px;
    }

    .detail-hero,
    .order-section {
        padding: 32px 18px;
    }

    .set-image img {
        min-height: 360px;
    }

    .price-panel strong {
        font-size: 60px;
    }

    .price-panel small {
        font-size: 24px;
    }

    .sticky-buy {
        right: 9px;
        bottom: 9px;
        width: calc(100% - 18px);
    }

    .sticky-buy .button {
        min-height: 52px;
        padding-inline: 16px;
    }

    .sticky-buy strong {
        font-size: 25px;
    }
}