:root {
    --bg: #050709;
    --panel: #0a0f14;
    --panel2: #0d141a;
    --text: #eaf2f7;
    --muted: #9eacb7;
    --blue: #20b8ff;
    --green: #83ef3f;
    --line: #1a2832;
    --white: #fff;
    --shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
    --max: 1180px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font: 16px/1.7 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a {
    color: var(--blue);
    text-decoration: none;
}

a:hover {
    color: var(--green);
}

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

code,
pre {
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

code {
    color: #b9f58b;
}

pre {
    overflow: auto;
    background: #030506;
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 1rem 1.2rem;
    color: #d9e8ef;
}

.wrap {
    width: min(calc(100% - 2rem), var(--max));
    margin: auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 30;
    background: rgba(5, 7, 9, 0.92);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
}

.nav {
    min-height: 70px;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--white);
    font-weight: 800;
    letter-spacing: 0.04em;
}

.brand img {
    width: 42px;
    height: 42px;
    border-radius: 10px;
}

.brand span em {
    font-style: normal;
    color: var(--green);
}

.nav-links {
    margin-left: auto;
    display: flex;
    gap: 0.3rem;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.nav-links a {
    padding: 0.55rem 0.7rem;
    border-radius: 8px;
    color: #cbd7de;
    font-size: 0.92rem;
}

.nav-links a:hover,
.nav-links a.active {
    background: #101a21;
    color: var(--white);
}

.hero {
    min-height: 640px;
    display: flex;
    align-items: center;
    position: relative;
    background:
        linear-gradient(
            90deg,
            rgba(2, 5, 8, 0.96) 0%,
            rgba(2, 5, 8, 0.80) 40%,
            rgba(2, 5, 8, 0.48) 68%,
            rgba(2, 5, 8, 0.72) 100%
        ),
        url("/assets/images/hero.png") center / cover no-repeat;
    border-bottom: 1px solid var(--line);
}

.hero-content {
    max-width: 760px;
    padding: 5.5rem 0;
}

.eyebrow {
    display: inline-block;
    border: 1px solid #224356;
    background: rgba(13, 31, 42, 0.65);
    padding: 0.35rem 0.65rem;
    border-radius: 999px;
    color: #a9dff7;
    font-size: 0.8rem;
    font-weight: 750;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.hero h1 {
    font-size: clamp(3rem, 8vw, 6.8rem);
    line-height: 0.95;
    margin: 1rem 0 0.9rem;
    letter-spacing: -0.06em;
}

.hero h1 .ai {
    color: var(--green);
}

.hero .lead {
    font-size: clamp(1.15rem, 2vw, 1.45rem);
    max-width: 700px;
    color: #d6e1e7;
}

.actions {
    display: flex;
    gap: 0.8rem;
    flex-wrap: wrap;
    margin-top: 1.6rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.78rem 1rem;
    border-radius: 10px;
    border: 1px solid #2a3a45;
    background: #111b22;
    color: var(--white);
    font-weight: 750;
}

.btn.primary {
    background: linear-gradient(135deg, #078ccc, #58bf28);
    border-color: transparent;
}

.btn:hover {
    transform: translateY(-1px);
    color: var(--white);
}

main section {
    padding: 4.5rem 0;
}

.section-title {
    max-width: 820px;
    margin-bottom: 2rem;
}

.section-title h1,
.section-title h2 {
    margin: 0 0 0.65rem;
    line-height: 1.1;
    letter-spacing: -0.025em;
}

.section-title h1 {
    font-size: clamp(2.4rem, 5vw, 4.4rem);
}

.section-title h2 {
    font-size: clamp(2rem, 4vw, 3rem);
}

.section-title p,
.muted {
    color: var(--muted);
}

.grid {
    display: grid;
    gap: 1.1rem;
}

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

.grid.three {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
    background: linear-gradient(180deg, var(--panel2), var(--panel));
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 1.35rem;
    box-shadow: var(--shadow);
}

.card h3 {
    margin: 0.1rem 0 0.55rem;
}

.card p:last-child {
    margin-bottom: 0;
}

.kicker {
    color: var(--green);
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-size: 0.77rem;
}

.flow {
    display: flex;
    gap: 0.6rem;
    flex-wrap: wrap;
    align-items: center;
}

.flow span {
    padding: 0.55rem 0.75rem;
    border: 1px solid #22343f;
    background: #081017;
    border-radius: 9px;
    font-weight: 750;
}

.flow b {
    color: var(--green);
}

.page-hero {
    padding: 4.5rem 0 3rem;
    background:
        radial-gradient(
            circle at 18% 0%,
            rgba(32, 184, 255, 0.12),
            transparent 35%
        ),
        radial-gradient(
            circle at 82% 0%,
            rgba(131, 239, 63, 0.10),
            transparent 35%
        );
    border-bottom: 1px solid var(--line);
}

.page-hero h1 {
    font-size: clamp(2.6rem, 6vw, 5rem);
    line-height: 1;
    margin: 0.7rem 0;
}

.content {
    max-width: 920px;
}

.content h2 {
    margin-top: 2.4rem;
    font-size: 1.9rem;
}

.content h3 {
    margin-top: 1.7rem;
}

.content li {
    margin: 0.35rem 0;
}

.note {
    border-left: 4px solid var(--blue);
    background: #09131a;
    padding: 1rem 1.2rem;
    border-radius: 0 10px 10px 0;
}

.warn {
    border-left-color: var(--green);
}

.toc {
    background: #081016;
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 1.1rem 1.25rem;
}

.toc a {
    margin-right: 1rem;
    white-space: nowrap;
}

.download-panel {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 2rem;
    align-items: center;
}

.download-panel img {
    width: 100%;
    border-radius: 24px;
    box-shadow:
        0 0 60px rgba(32, 184, 255, 0.13),
        0 0 80px rgba(131, 239, 63, 0.10);
}

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--panel);
    border: 1px solid var(--line);
}

th,
td {
    text-align: left;
    padding: 0.7rem;
    border-bottom: 1px solid var(--line);
    vertical-align: top;
}

th {
    background: #0d171e;
    color: #fff;
}

.site-footer {
    border-top: 1px solid var(--line);
    padding: 2rem 0 3rem;
    color: #82919c;
}

.footer-row {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

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

.accent-green {
    color: var(--green);
}

@media (max-width: 900px) {
    .nav {
        align-items: flex-start;
        padding: 0.8rem 0;
        flex-direction: column;
    }

    .nav-links {
        margin: 0;
    }

    .grid.two,
    .grid.three,
    .download-panel {
        grid-template-columns: 1fr;
    }

    .download-panel img {
        max-width: 280px;
    }

    .hero {
        min-height: 560px;
    }

    .hero-content {
        padding: 4rem 0;
    }
}

@media (max-width: 560px) {
    .nav-links a {
        padding: 0.35rem 0.45rem;
        font-size: 0.85rem;
    }

    .hero h1 {
        font-size: 3.3rem;
    }

    main section {
        padding: 3rem 0;
    }

    .page-hero {
        padding: 3rem 0 2rem;
    }
}