:root {
    --bg: #080a10;
    --bg-deep: #05060b;
    --surface: rgba(16, 19, 30, 0.82);
    --surface-strong: rgba(18, 22, 34, 0.92);
    --ink: #f5f7fd;
    --muted: #a5adbd;
    --line: rgba(255, 255, 255, 0.08);
    --line-strong: rgba(255, 255, 255, 0.14);
    --accent: #ff4fd8;
    --accent-deep: #7657ff;
    --accent-soft: rgba(255, 79, 216, 0.16);
    --glow-blue: rgba(90, 124, 255, 0.3);
    --glow-cyan: rgba(31, 241, 220, 0.22);
    --glow-yellow: rgba(255, 210, 74, 0.2);
    --shadow: 0 24px 70px rgba(0, 0, 0, 0.34);
    --shadow-soft: 0 14px 32px rgba(0, 0, 0, 0.22);
    --radius-xl: 36px;
    --radius-lg: 28px;
    --radius-md: 20px;
    --font-sans: "SF Pro Display", "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    --font-display: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    --font-mono: Consolas, "SFMono-Regular", "Liberation Mono", monospace;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--ink);
    font-family: var(--font-sans);
    background:
        radial-gradient(circle at 12% 16%, rgba(255, 79, 216, 0.2), transparent 18%),
        radial-gradient(circle at 82% 10%, rgba(90, 124, 255, 0.26), transparent 24%),
        radial-gradient(circle at 88% 76%, rgba(31, 241, 220, 0.12), transparent 18%),
        linear-gradient(180deg, #0a0d14 0%, var(--bg) 42%, var(--bg-deep) 100%);
    overflow-x: hidden;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    background:
        linear-gradient(135deg, rgba(255, 79, 216, 0.1), transparent 26%, transparent 70%, rgba(31, 241, 220, 0.1)),
        repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.045) 0 1px, transparent 1px 34px),
        repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.045) 0 1px, transparent 1px 34px);
    background-size: auto, 34px 34px, 34px 34px;
    mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.55), rgba(0, 0, 0, 0.2) 56%, transparent 86%);
}

body::after {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    background:
        radial-gradient(circle at 18% 18%, rgba(255, 79, 216, 0.16), transparent 16%),
        radial-gradient(circle at 75% 10%, rgba(90, 124, 255, 0.14), transparent 18%),
        radial-gradient(circle at 68% 72%, rgba(31, 241, 220, 0.12), transparent 14%);
    opacity: 1;
}

.page-shell {
    width: min(1180px, calc(100% - 40px));
    margin: 0 auto;
    padding: 24px 0 80px;
    position: relative;
}

.page-shell::before {
    content: "";
    position: absolute;
    top: 22px;
    right: -120px;
    width: 760px;
    height: 760px;
    pointer-events: none;
    background:
        linear-gradient(135deg, rgba(255, 79, 216, 0.42), rgba(90, 124, 255, 0.38) 48%, rgba(31, 241, 220, 0.34)),
        linear-gradient(45deg, rgba(255, 210, 74, 0.26), transparent 56%);
    clip-path: polygon(18% 0, 100% 0, 82% 35%, 100% 100%, 32% 100%, 0 62%);
    filter: blur(18px);
    opacity: 0.8;
    z-index: 0;
}

.page-shell::after {
    content: "";
    position: absolute;
    top: 180px;
    left: -90px;
    width: 440px;
    height: 440px;
    pointer-events: none;
    background:
        radial-gradient(circle at center, rgba(255, 79, 216, 0.14), transparent 40%),
        radial-gradient(circle at center, transparent 44%, rgba(90, 124, 255, 0.16) 45%, transparent 47%),
        radial-gradient(circle at center, transparent 58%, rgba(31, 241, 220, 0.12) 59%, transparent 61%);
    filter: blur(4px);
    opacity: 0.9;
    z-index: 0;
}

.page-shell > * {
    position: relative;
    z-index: 1;
}

.site-header {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 20px;
    padding: 10px 0 28px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    color: var(--ink);
    font-weight: 650;
    text-decoration: none;
}

.brand-logo {
    width: 36px;
    height: 36px;
}

.site-nav {
    display: flex;
    justify-content: center;
    gap: 28px;
}

.site-nav a {
    color: var(--muted);
    text-decoration: none;
    font-size: 0.98rem;
    font-weight: 500;
    letter-spacing: 0.01em;
}

.site-nav a:hover {
    color: #ffffff;
}

.hero {
    display: grid;
    gap: 34px;
    min-height: calc(100vh - 120px);
    padding: 28px 0 40px;
    align-content: center;
}

.hero-headline {
    max-width: 1120px;
    margin: 0 auto;
    text-align: center;
}

.hero-headline .eyebrow {
    margin-bottom: 18px;
}

.hero-headline h1 {
    margin: 0 auto;
    white-space: nowrap;
}

.hero-body {
    display: grid;
    grid-template-columns: minmax(0, 0.78fr) minmax(420px, 1fr);
    align-items: center;
    gap: 42px;
}

.eyebrow {
    margin: 0 0 14px;
    color: #d3d8e6;
    font-family: var(--font-sans);
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.16em;
}

h2,
.brand span {
    font-family: var(--font-display);
}

h1 {
    margin: 0;
    max-width: none;
    font-family: var(--font-display);
    font-size: clamp(4rem, 8vw, 6.9rem);
    font-weight: 700;
    line-height: 0.96;
    letter-spacing: -0.05em;
    text-wrap: balance;
}

h2 {
    margin: 0 0 14px;
    font-size: clamp(2rem, 4vw, 3.3rem);
    font-weight: 620;
    line-height: 1.08;
    letter-spacing: -0.03em;
}

.hero-text,
.feature-band-card p,
.feature-list span,
.statement p,
.quote-block p,
.install-copy p,
.install-step p,
.site-nav a {
    line-height: 1.7;
}

.hero-text {
    max-width: 560px;
    margin: 0;
    color: var(--muted);
    font-size: 1.06rem;
    line-height: 1.82;
    letter-spacing: 0.01em;
}

.hero-copy {
    max-width: 560px;
    padding-top: 8px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin: 32px 0 18px;
}

.hero-footnote {
    margin: 0;
    color: var(--muted);
    font-size: 0.96rem;
    letter-spacing: 0.01em;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 22px;
    border-radius: 999px;
    border: 1px solid transparent;
    font-family: var(--font-sans);
    font-weight: 650;
    letter-spacing: -0.01em;
    text-decoration: none;
    transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.button:hover {
    transform: translateY(-1px);
}

.button-primary {
    color: #fff;
    background:
        linear-gradient(135deg, #ff4fd8 0%, #8f5bff 52%, #26d8ff 100%);
    box-shadow: 0 14px 30px rgba(90, 124, 255, 0.34);
}

.button-secondary,
.button-tertiary {
    color: var(--ink);
    border-color: var(--line-strong);
    background: rgba(20, 25, 38, 0.78);
}

.button-tertiary {
    background: transparent;
}

.button-block {
    width: 100%;
}

.hero-frame,
.feature-band-card,
.feature-list,
.preview-panel,
.install-card {
    border: 1px solid var(--line);
    border-radius: var(--radius-xl);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.015)),
        var(--surface);
    box-shadow: var(--shadow);
    backdrop-filter: blur(16px);
}

.hero-frame {
    width: min(100%, 640px);
    justify-self: end;
    padding: 18px;
    position: relative;
    overflow: hidden;
}

.hero-frame::before {
    content: "";
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    padding: 1px;
    background: linear-gradient(135deg, rgba(255, 79, 216, 0.45), rgba(90, 124, 255, 0.35), rgba(31, 241, 220, 0.32));
    mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    mask-composite: exclude;
    -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    -webkit-mask-composite: xor;
    pointer-events: none;
}

.product-shot {
    overflow: hidden;
    border-radius: calc(var(--radius-xl) - 8px);
    background:
        linear-gradient(135deg, rgba(255, 79, 216, 0.16), transparent 28%),
        linear-gradient(315deg, rgba(31, 241, 220, 0.1), transparent 34%),
        linear-gradient(180deg, #0f121b 0%, #161b27 100%);
}

.product-shot-top {
    display: flex;
    gap: 8px;
    padding: 16px 18px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.product-shot-top span {
    width: 10px;
    height: 10px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.26);
}

.product-shot-body {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
    gap: 14px;
    padding: 18px;
}

.shot-pane {
    min-width: 0;
    padding: 18px;
    border-radius: 22px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    overflow: hidden;
}

.shot-pane-active {
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02)),
        rgba(255, 255, 255, 0.04);
    box-shadow: inset 0 0 0 1px rgba(90, 124, 255, 0.12);
}

.shot-label {
    margin: 0 0 12px;
    color: #57dfff;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.shot-arrow {
    display: flex;
    align-items: center;
    color: #ff73dd;
    font-size: 1.8rem;
}

pre,
code,
.inline-code {
    font-family: var(--font-mono);
}

pre {
    margin: 0;
    white-space: pre-wrap;
    line-height: 1.12;
}

.product-shot pre {
    color: #f4efe9;
}

.code-block {
    margin: 0;
    padding-top: 2px;
    white-space: normal;
}

.code-block code {
    display: block;
    counter-reset: code-line;
    font-size: 0;
    line-height: 0;
}

.code-line {
    display: block;
    position: relative;
    font-size: 0.9rem;
    line-height: 1.14;
    padding-left: 36px;
    white-space: pre;
}

.code-line.is-empty {
    height: 1.14em;
}

.code-line::before {
    content: counter(code-line);
    counter-increment: code-line;
    position: absolute;
    top: 0;
    left: 0;
    width: 24px;
    color: rgba(159, 173, 205, 0.48);
    font-size: 0.82em;
    text-align: left;
}

.shot-pane .code-line {
    font-size: 0.78rem;
    line-height: 1.08;
    padding-left: 30px;
    letter-spacing: -0.01em;
}

.shot-pane .code-line.is-empty {
    height: 1.08em;
}

.shot-pane .code-line::before {
    width: 20px;
    font-size: 0.78em;
}

.preview-panel .code-line {
    font-size: 0.92rem;
}

.token-annotation {
    color: #57dfff;
}

.token-keyword {
    color: #ff73dd;
}

.token-type {
    color: #9f8dff;
}

.token-function {
    color: #f5f7fd;
    font-weight: 700;
}

.token-string {
    color: #ffd66f;
}

.token-punctuation {
    color: #cfd7ed;
}

.statement,
.quote-block {
    max-width: 920px;
    margin: 110px auto;
    text-align: center;
}

.statement p,
.quote-block p {
    margin: 0;
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 3vw, 2.8rem);
    font-weight: 560;
    line-height: 1.34;
    letter-spacing: -0.028em;
    color: #f4f7ff;
}

.feature-band {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
    gap: 22px;
}

.feature-band-card,
.feature-list,
.preview-panel,
.install-card {
    padding: 32px;
}

.feature-band-card p:last-child,
.install-copy p:last-child {
    margin-bottom: 0;
    color: var(--muted);
}

.feature-list {
    display: grid;
    gap: 20px;
    align-content: start;
}

.feature-list div {
    padding-bottom: 18px;
    border-bottom: 1px solid var(--line);
}

.feature-list div:last-child {
    padding-bottom: 0;
    border-bottom: 0;
}

.feature-list strong {
    display: block;
    margin-bottom: 6px;
    font-size: 1.08rem;
    font-family: var(--font-display);
    font-weight: 620;
    letter-spacing: -0.015em;
    color: #ffffff;
}

.feature-list span,
.install-step p {
    color: var(--muted);
}

.preview-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
    margin-top: 110px;
}

.preview-panel {
    min-height: 420px;
}

.preview-panel pre {
    margin-top: 26px;
    padding: 24px;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.03);
}

.preview-panel-dark {
    background:
        linear-gradient(145deg, rgba(255, 79, 216, 0.12), transparent 34%),
        linear-gradient(325deg, rgba(31, 241, 220, 0.08), transparent 28%),
        linear-gradient(180deg, #141924 0%, #1e2432 100%);
    color: #f5f7fd;
    border-color: rgba(255, 255, 255, 0.05);
}

.preview-panel-dark .eyebrow,
.preview-panel-dark p,
.preview-panel-dark h2 {
    color: inherit;
}

.preview-panel-dark pre {
    background: rgba(255, 255, 255, 0.06);
}

.install-section {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(330px, 420px);
    gap: 28px;
    margin-top: 110px;
    align-items: start;
}

.install-copy {
    padding-top: 10px;
}

.install-copy p:last-child {
    color: var(--muted);
}

.inline-code {
    padding: 4px 8px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.06);
    font-size: 0.92em;
}

.install-card {
    display: grid;
    gap: 16px;
}

.install-step {
    display: flex;
    gap: 16px;
    align-items: start;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--line);
}

.install-step:last-of-type {
    padding-bottom: 6px;
}

.install-step span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 999px;
    background: linear-gradient(135deg, rgba(255, 79, 216, 0.18), rgba(90, 124, 255, 0.18));
    color: #ffffff;
    font-size: 0.82rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    box-shadow: inset 0 0 0 1px rgba(90, 124, 255, 0.16);
}

.install-step p {
    margin: 9px 0 0;
}

.site-footer {
    display: flex;
    justify-content: space-between;
    gap: 24px;
    margin-top: 88px;
    padding-top: 24px;
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: 0.92rem;
    line-height: 1.65;
    letter-spacing: 0.01em;
}

.site-footer p {
    margin: 0;
}

.site-footer p:last-child {
    max-width: 620px;
    text-align: right;
}

.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 600ms ease, transform 600ms ease;
}

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

.delay-1 {
    transition-delay: 120ms;
}

@media (max-width: 980px) {
    .site-header,
    .feature-band,
    .preview-grid,
    .install-section {
        grid-template-columns: 1fr;
    }

    .site-header {
        gap: 16px;
    }

    .site-nav {
        justify-content: flex-start;
    }

    .hero {
        min-height: auto;
        padding-top: 24px;
    }

    .hero-headline {
        text-align: left;
        margin: 0;
    }

    .hero-headline h1 {
        margin: 0;
        white-space: normal;
    }

    .hero-body {
        grid-template-columns: 1fr;
    }

    .hero-copy {
        max-width: 100%;
        padding-top: 0;
    }

    .hero-frame {
        width: 100%;
        justify-self: stretch;
    }

    .site-footer {
        flex-direction: column;
    }

    .site-footer p:last-child {
        max-width: 100%;
        text-align: left;
    }

    .product-shot-body {
        grid-template-columns: 1fr;
    }

    .shot-arrow {
        justify-content: center;
        transform: rotate(90deg);
    }
}

@media (max-width: 720px) {
    .page-shell {
        width: min(100% - 20px, 1180px);
    }

    .site-header {
        padding-bottom: 18px;
    }

    .site-nav,
    .hero-actions {
        flex-wrap: wrap;
        gap: 12px;
    }

    .button,
    .button-block {
        width: 100%;
    }

    h1 {
        font-size: clamp(3.2rem, 15vw, 4.8rem);
        line-height: 0.98;
        letter-spacing: -0.04em;
    }

    .feature-band-card,
    .feature-list,
    .preview-panel,
    .install-card,
    .hero-frame {
        padding: 22px;
        border-radius: 24px;
    }

    .statement,
    .quote-block {
        margin: 80px auto;
    }
}