:root {
    --canvas: #f6f7f5;
    --canvas-tint: #eef1f8;
    --surface: rgba(255, 255, 255, 0.78);
    --ink: #20242a;
    --ink-soft: #656c76;
    --line: rgba(46, 55, 69, 0.12);
    --blue: #536fd7;
    --blue-deep: #3d58bd;
    --blue-soft: #e7ebfb;
    --mint: #65d6a1;
    --panel: #1c2229;
    --panel-raised: #252c34;
    --panel-line: rgba(255, 255, 255, 0.1);
    --panel-text: #f5f7f8;
    --panel-muted: #9da7b2;
    --error: #ff8b82;
    --body: Inter, "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
    --mono: "Cascadia Code", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

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

html {
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    overflow-x: hidden;
    background:
        radial-gradient(circle at 12% 8%, rgba(83, 111, 215, 0.09), transparent 28rem),
        radial-gradient(circle at 92% 82%, rgba(101, 214, 161, 0.08), transparent 30rem),
        var(--canvas);
    color: var(--ink);
    font-family: var(--body);
    line-height: 1.5;
    position: relative;
}

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

a {
    color: inherit;
}

.page-grid {
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    background-image: radial-gradient(rgba(42, 52, 66, 0.1) 0.7px, transparent 0.7px);
    background-size: 26px 26px;
    mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.55), transparent 72%);
}

body::before {
    content: "";
    position: fixed;
    width: 34rem;
    height: 34rem;
    right: -17rem;
    top: -20rem;
    border: 1px solid rgba(83, 111, 215, 0.14);
    border-radius: 50%;
    box-shadow:
        0 0 0 52px rgba(83, 111, 215, 0.025),
        0 0 0 104px rgba(83, 111, 215, 0.018);
    pointer-events: none;
}

.topbar {
    width: min(1180px, calc(100% - 64px));
    min-height: 88px;
    margin: 0 auto;
    border-bottom: 1px solid var(--line);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    color: var(--ink);
    font-size: 1.04rem;
    font-weight: 750;
    letter-spacing: -0.025em;
    text-decoration: none;
}

.brand-mark {
    display: inline-grid;
    place-items: center;
    width: 46px;
    height: 34px;
    border-radius: 10px;
    background: var(--blue);
    box-shadow: 0 7px 20px rgba(83, 111, 215, 0.22);
    color: #fff;
    font-family: var(--mono);
    font-size: 0.74rem;
    letter-spacing: -0.06em;
}

.release-stamp {
    min-height: 34px;
    padding: 0 13px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.56);
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--ink-soft);
    font-family: var(--mono);
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.025em;
}

.release-state {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    color: #3f6b58;
}

.release-state i {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--mint);
    box-shadow: 0 0 0 4px rgba(101, 214, 161, 0.14);
}

main {
    width: min(1180px, calc(100% - 64px));
    margin: 0 auto;
}

.hero {
    min-height: calc(100vh - 158px);
    padding: clamp(60px, 7vw, 96px) 0 72px;
    display: grid;
    grid-template-columns: minmax(0, 0.8fr) minmax(620px, 1.2fr);
    align-items: center;
    gap: clamp(48px, 5vw, 72px);
}

.hero-copy {
    position: relative;
    z-index: 1;
}

.eyebrow {
    width: fit-content;
    min-height: 32px;
    margin-bottom: 28px;
    padding: 0 12px;
    border: 1px solid rgba(83, 111, 215, 0.16);
    border-radius: 999px;
    background: rgba(231, 235, 251, 0.72);
    display: flex;
    align-items: center;
    gap: 9px;
    color: var(--blue-deep);
    font-family: var(--mono);
    font-size: 0.67rem;
    font-weight: 700;
    letter-spacing: 0.055em;
    text-transform: uppercase;
}

.prompt-signature {
    position: absolute;
    right: 2%;
    top: -32px;
    z-index: -1;
    color: rgba(83, 111, 215, 0.075);
    font-family: var(--mono);
    font-size: clamp(5.5rem, 9vw, 8rem);
    font-weight: 800;
    line-height: 1;
    letter-spacing: -0.2em;
    user-select: none;
}

.prompt-underscore {
    color: rgba(101, 214, 161, 0.11);
}

h1 {
    max-width: 620px;
    font-size: clamp(3.5rem, 5vw, 4.9rem);
    font-weight: 780;
    letter-spacing: -0.065em;
    line-height: 1.02;
}

.headline-line {
    display: block;
    white-space: nowrap;
}

.headline-accent {
    color: var(--blue);
}

.hero-description {
    max-width: 540px;
    margin-top: 30px;
    color: #555d67;
    font-size: clamp(0.98rem, 1.25vw, 1.08rem);
    line-height: 1.85;
}

.capability-list {
    margin-top: 25px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    list-style: none;
}

.capability-list li {
    padding: 7px 11px;
    border: 1px solid var(--line);
    border-radius: 9px;
    background: rgba(255, 255, 255, 0.58);
    color: #515862;
    font-family: var(--body);
    font-size: 0.78rem;
    font-weight: 500;
}

.capability-list li::before {
    content: "•";
    margin-right: 7px;
    color: var(--blue);
}

.install-panel {
    position: relative;
}

.panel-offset {
    position: absolute;
    inset: 20px -18px -18px 20px;
    border-radius: 28px;
    background:
        linear-gradient(145deg, rgba(83, 111, 215, 0.22), rgba(101, 214, 161, 0.12));
    filter: blur(0.2px);
}

.panel-surface {
    position: relative;
    z-index: 1;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 23px;
    background: var(--panel);
    box-shadow:
        0 30px 70px rgba(27, 34, 42, 0.2),
        0 8px 18px rgba(27, 34, 42, 0.1);
    color: var(--panel-text);
}

.panel-header {
    min-height: 112px;
    padding: 27px 30px 23px;
    border-bottom: 1px solid var(--panel-line);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.025), transparent);
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
}

.panel-kicker {
    margin-bottom: 8px;
    color: #9cafef;
    font-family: var(--mono);
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.panel-header h2 {
    font-size: clamp(1.8rem, 2.7vw, 2.35rem);
    font-weight: 720;
    letter-spacing: -0.045em;
    line-height: 1;
}

.panel-status {
    padding-bottom: 2px;
    color: #7de1ad;
    font-family: var(--mono);
    font-size: 0.65rem;
    white-space: nowrap;
}

.panel-status::before {
    content: "●";
    margin-right: 7px;
}

.platform {
    padding: 24px 30px 26px;
}

.platform + .platform {
    border-top: 1px solid var(--panel-line);
}

.platform-heading {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.platform-heading h3 {
    font-size: 0.92rem;
    font-weight: 680;
    line-height: 1.2;
}

.platform-heading p {
    margin-top: 3px;
    color: var(--panel-muted);
    font-family: var(--mono);
    font-size: 0.65rem;
}

.platform-icon {
    height: 36px;
    min-width: 42px;
    padding: 0 10px;
    border: 1px solid var(--panel-line);
    border-radius: 10px;
    background: var(--panel-raised);
    color: var(--panel-text);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.platform-icon svg {
    width: 15px;
    height: 15px;
    fill: currentColor;
}

.icon-divider {
    width: 1px;
    height: 14px;
    background: var(--panel-line);
}

.windows-icon {
    color: #adc0ff;
}

.command-box {
    min-height: 74px;
    padding: 11px 11px 11px 17px;
    border: 1px solid var(--panel-line);
    border-radius: 13px;
    background: #11161b;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.018);
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: 12px;
}

.command-prompt {
    color: #7de1ad;
    font-family: var(--mono);
    font-size: 0.74rem;
    font-weight: 800;
}

.command-box code {
    min-width: 0;
    color: #c0ccf6;
    font-family: var(--mono);
    font-size: clamp(0.68rem, 0.82vw, 0.74rem);
    line-height: 1.65;
    overflow-wrap: anywhere;
}

.copy-button {
    height: 42px;
    min-width: 86px;
    padding: 0 13px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 10px;
    background: var(--panel-raised);
    color: var(--panel-text);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: var(--body);
    font-size: 0.74rem;
    font-weight: 650;
    transition: border-color 150ms ease, background 150ms ease, color 150ms ease, transform 150ms ease;
}

.copy-button svg {
    width: 16px;
    height: 16px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.6;
}

.copy-button:hover {
    border-color: rgba(255, 255, 255, 0.26);
    background: #303943;
    transform: translateY(-1px);
}

.copy-button.is-copied {
    border-color: rgba(101, 214, 161, 0.58);
    background: rgba(101, 214, 161, 0.12);
    color: #88e7b5;
}

.copy-button.copy-error {
    border-color: var(--error);
    background: rgba(255, 139, 130, 0.1);
    color: var(--error);
}

.install-note {
    padding: 17px 30px;
    border-top: 1px solid var(--panel-line);
    color: var(--panel-muted);
    font-family: var(--mono);
    font-size: 0.64rem;
    line-height: 1.6;
}

.install-note::before {
    content: "i";
    width: 18px;
    height: 18px;
    margin-right: 9px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 50%;
    color: #c1c8ce;
    display: inline-grid;
    place-items: center;
    font-family: Georgia, serif;
    font-size: 0.68rem;
    font-weight: 700;
}

footer {
    width: min(1180px, calc(100% - 64px));
    min-height: 70px;
    margin: 0 auto;
    border-top: 1px solid var(--line);
    color: var(--ink-soft);
    display: flex;
    align-items: center;
    gap: 15px;
    font-family: var(--mono);
    font-size: 0.65rem;
    letter-spacing: 0.055em;
    text-transform: uppercase;
}

.footer-line {
    width: 30px;
    height: 1px;
    background: var(--line);
}

.copy-announcement {
    position: fixed;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
    white-space: nowrap;
}

:focus-visible {
    outline: 3px solid rgba(83, 111, 215, 0.58);
    outline-offset: 4px;
}

@media (max-width: 1080px) {
    .hero {
        grid-template-columns: 1fr;
        gap: 70px;
    }

    .hero-copy {
        max-width: 720px;
    }

    .install-panel {
        max-width: 760px;
    }

    .prompt-signature {
        right: 10%;
    }
}

@media (max-width: 640px) {
    .topbar,
    main,
    footer {
        width: min(100% - 32px, 1180px);
    }

    .topbar {
        min-height: 76px;
    }

    .brand-mark {
        width: 42px;
        height: 31px;
        border-radius: 9px;
    }

    .release-stamp {
        min-height: 32px;
        padding: 0 11px;
        gap: 8px;
        font-size: 0.62rem;
    }

    .release-state,
    .release-stamp time {
        display: none;
    }

    .hero {
        min-height: auto;
        padding: 52px 0 70px;
        gap: 58px;
    }

    .eyebrow {
        margin-bottom: 24px;
        font-size: 0.63rem;
    }

    .eyebrow span:nth-child(2),
    .eyebrow span:nth-child(3) {
        display: none;
    }

    h1 {
        font-size: clamp(3rem, 14.5vw, 4rem);
        line-height: 1.04;
    }

    .prompt-signature {
        right: 2%;
        top: -8px;
        font-size: 5.8rem;
    }

    .hero-description {
        margin-top: 26px;
        font-size: 0.95rem;
        line-height: 1.8;
    }

    .capability-list {
        gap: 6px;
    }

    .capability-list li {
        font-size: 0.74rem;
    }

    .panel-offset {
        inset: 12px -8px -10px 10px;
        border-radius: 24px;
    }

    .panel-surface {
        border-radius: 20px;
    }

    .panel-header {
        min-height: 104px;
        padding: 23px 20px 21px;
        align-items: flex-start;
        flex-direction: column;
        gap: 12px;
    }

    .panel-header h2 {
        font-size: 2rem;
    }

    .platform {
        padding: 22px 20px 24px;
    }

    .command-box {
        min-height: 128px;
        padding: 15px;
        grid-template-columns: auto minmax(0, 1fr);
        align-items: start;
    }

    .command-box code {
        padding-top: 1px;
        font-size: 0.69rem;
    }

    .copy-button {
        grid-column: 2;
        min-width: 90px;
        justify-self: end;
    }

    .install-note {
        padding: 16px 20px;
    }

    footer {
        min-height: 82px;
        line-height: 1.5;
    }

    .footer-line {
        width: 18px;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
    }
}