:root {
    --bg: #fbfaf8;
    --surface: #ffffff;
    --surface-2: #f2f0ec;
    --text: #1d1b19;
    --muted: #5f5a54;
    --border: #e3dfd8;
    --accent: #6b4fd8;
    --accent-soft: #ece7ff;
    --warn: #b0451d;
    --term-bg: #17151f;
    --term-text: #e8e6f0;
    --term-dim: #8d88a3;
    --term-accent: #b7a4ff;
    --term-green: #7ddca0;
    --radius: 12px;
    --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
    --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
    color-scheme: light;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #121118;
        --surface: #1a1922;
        --surface-2: #22202c;
        --text: #ecebf2;
        --muted: #a29fb3;
        --border: #2e2c3a;
        --accent: #a693ff;
        --accent-soft: #2a2546;
        --warn: #ff9a6b;
        --term-bg: #0c0b10;
        color-scheme: dark;
    }
}

* { box-sizing: border-box; }

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

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font: 16px/1.65 var(--sans);
}

a { color: var(--accent); }

code {
    font-family: var(--mono);
    font-size: 0.88em;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 0.08em 0.38em;
    overflow-wrap: anywhere;
}

.wrap {
    max-width: 1040px;
    margin: 0 auto;
    padding: 0 16px;
}

/* Header */
.site-header {
    border-bottom: 1px solid var(--border);
    background: var(--surface);
}

.site-header .wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    min-height: 60px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    color: var(--text);
    text-decoration: none;
}

.brand-mark {
    display: grid;
    place-items: center;
    width: 30px;
    height: 30px;
    border-radius: 8px;
    background: var(--term-bg);
    color: var(--term-accent);
    font: 700 14px/1 var(--mono);
}

.site-nav {
    display: flex;
    gap: 18px;
    font-size: 0.95rem;
}

.site-nav a {
    color: var(--muted);
    text-decoration: none;
}

.site-nav a:hover { color: var(--text); }

/* Hero */
.hero {
    padding: 64px 0 48px;
}

.hero .wrap {
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    gap: 48px;
    align-items: center;
}

.eyebrow {
    display: inline-block;
    margin-bottom: 14px;
    padding: 4px 10px;
    border-radius: 999px;
    background: var(--accent-soft);
    color: var(--accent);
    font-size: 0.85rem;
    font-weight: 600;
}

h1 {
    margin: 0 0 16px;
    font-size: clamp(2rem, 4.5vw, 3rem);
    line-height: 1.15;
    letter-spacing: -0.02em;
}

.lead {
    margin: 0 0 28px;
    color: var(--muted);
    font-size: 1.12rem;
}

.actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.button {
    display: inline-block;
    padding: 10px 18px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text);
    font-weight: 600;
    text-decoration: none;
}

.button.primary {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

@media (prefers-color-scheme: dark) {
    .button.primary { color: #15131c; }
}

/* Terminal mock */
.terminal {
    background: var(--term-bg);
    color: var(--term-text);
    border-radius: var(--radius);
    box-shadow: 0 18px 50px rgba(20, 16, 40, 0.25);
    overflow: hidden;
    font: 13.5px/1.55 var(--mono);
}

.terminal-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 9px 12px;
    background: rgba(255, 255, 255, 0.05);
    color: var(--term-dim);
    font-size: 12px;
}

.terminal-buttons {
    display: flex;
    gap: 6px;
}

.terminal-buttons span {
    padding: 2px 7px;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.08);
    color: var(--term-text);
}

.terminal-buttons .active {
    background: var(--term-accent);
    color: var(--term-bg);
}

.terminal-body {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 14px 16px 18px;
    min-height: 390px;
}

.terminal-body p { margin: 0; white-space: pre-wrap; }

.prompt { color: var(--term-green); }

.dim { color: var(--term-dim); }

.menu {
    position: absolute;
    top: 6px;
    right: 12px;
    width: min(320px, 82%);
    background: #262334;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 6px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    font-family: var(--sans);
    font-size: 13px;
}

.menu div {
    display: flex;
    justify-content: space-between;
    gap: 8px;
    padding: 5px 8px;
    border-radius: 6px;
}

.menu .selected { background: rgba(183, 164, 255, 0.18); }

.menu hr {
    border: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin: 4px 2px;
}

.menu .shield { color: #ffb38a; }

/* Sections */
section { padding: 48px 0; }

section + section { border-top: 1px solid var(--border); }

h2 {
    margin: 0 0 12px;
    font-size: 1.7rem;
    letter-spacing: -0.01em;
}

h3 { margin: 0 0 8px; font-size: 1.1rem; }

.section-lead {
    margin: 0 0 28px;
    color: var(--muted);
    max-width: 720px;
}

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

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
}

.card p { margin: 0; color: var(--muted); }

.card .icon {
    display: inline-grid;
    place-items: center;
    width: 36px;
    height: 36px;
    margin-bottom: 12px;
    border-radius: 9px;
    background: var(--accent-soft);
    color: var(--accent);
    font-size: 18px;
}

.table-scroll {
    overflow-x: auto;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.93rem;
}

th, td {
    padding: 10px 14px;
    text-align: left;
    vertical-align: top;
    border-bottom: 1px solid var(--border);
}

tr:last-child td { border-bottom: 0; }

th { background: var(--surface-2); font-weight: 600; white-space: nowrap; }

td code { white-space: normal; overflow-wrap: break-word; }

.note {
    margin-top: 16px;
    color: var(--muted);
    font-size: 0.93rem;
}

.note strong { color: var(--warn); }

.steps {
    counter-reset: step;
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 12px;
}

.steps li {
    counter-increment: step;
    position: relative;
    padding: 14px 16px 14px 56px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.steps li::before {
    content: counter(step);
    position: absolute;
    left: 16px;
    top: 13px;
    display: grid;
    place-items: center;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: var(--accent);
    color: var(--surface);
    font-weight: 700;
    font-size: 0.85rem;
}

.two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.two-col.wide-right { grid-template-columns: 1fr 1.3fr; }

ul.plain { margin: 0; padding-left: 1.2em; }

ul.plain li + li { margin-top: 6px; }

.site-footer {
    padding: 32px 0 48px;
    border-top: 1px solid var(--border);
    color: var(--muted);
    font-size: 0.9rem;
}

.site-footer .wrap {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 12px;
}

@media (max-width: 860px) {
    .hero .wrap, .two-col, .two-col.wide-right { grid-template-columns: 1fr; }
    .cards { grid-template-columns: 1fr; }
    .hero { padding-top: 40px; }
}

@media (max-width: 560px) {
    .site-nav .optional { display: none; }
    .terminal-body { min-height: 0; }
    .menu { position: static; width: auto; margin-bottom: 12px; }
}

/* 指令只在參數之間換行：每個參數包成 span，"--continue" 不會在連字號處被拆開 */
.commands-table td code span { white-space: nowrap; }