:root {
    --color-bg: #f5f7fa;
    --color-surface: #ffffff;
    --color-border: #e3e8ef;
    --color-text: #1a2332;
    --color-text-muted: #5a6478;
    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-accent: #0f172a;
    --color-code-bg: #f1f5f9;
    --shadow-card: 0 1px 3px rgba(15, 23, 42, 0.06), 0 4px 12px rgba(15, 23, 42, 0.04);
    --radius: 12px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 760px;
    margin: 0 auto;
    padding: 48px 24px 96px;
}

.header {
    margin-bottom: 48px;
    text-align: center;
}

.header h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.lead {
    font-size: 1.05rem;
    color: var(--color-text-muted);
    max-width: 580px;
    margin: 0 auto;
}

.step {
    display: flex;
    gap: 20px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 28px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-card);
}

.step-number {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--color-primary);
    color: white;
    font-weight: 600;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-body {
    flex: 1;
    min-width: 0;
}

.step-body h2 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: 12px;
}

.step-body p {
    margin-bottom: 12px;
    color: var(--color-text);
}

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

.button {
    display: inline-block;
    background: var(--color-primary);
    color: white;
    text-decoration: none;
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 500;
    transition: background 0.15s ease;
}

.button:hover {
    background: var(--color-primary-hover);
}

.hints {
    list-style: none;
    margin: 12px 0;
}

.hints li {
    padding: 6px 0 6px 24px;
    position: relative;
    color: var(--color-text-muted);
}

.hints li::before {
    content: "•";
    position: absolute;
    left: 8px;
    color: var(--color-primary);
    font-weight: bold;
}

code {
    background: var(--color-code-bg);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", Consolas, monospace;
    font-size: 0.92em;
}

.server-config {
    background: var(--color-code-bg);
    border-radius: 8px;
    padding: 16px;
    margin: 16px 0;
}

.config-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 0;
    border-bottom: 1px solid var(--color-border);
}

.config-row:last-child {
    border-bottom: none;
}

.config-label {
    flex-shrink: 0;
    width: 120px;
    font-weight: 600;
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.config-value {
    flex: 1;
    word-break: break-all;
    background: var(--color-surface);
    padding: 6px 10px;
    border-radius: 6px;
    border: 1px solid var(--color-border);
    user-select: all;
}

.screenshot {
    margin: 16px 0 4px;
}

.screenshot img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 8px;
    border: 1px solid var(--color-border);
    background: var(--color-code-bg);
}

.config-string {
    display: flex;
    align-items: stretch;
    gap: 8px;
    background: var(--color-code-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 10px;
    margin: 12px 0 16px;
}

.config-string code {
    flex: 1;
    min-width: 0;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    padding: 8px 10px;
    font-size: 0.78rem;
    line-height: 1.4;
    word-break: break-all;
    user-select: all;
    max-height: 96px;
    overflow-y: auto;
}

.copy-button {
    flex-shrink: 0;
    background: var(--color-primary);
    color: white;
    border: none;
    border-radius: 6px;
    padding: 0 16px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.15s ease;
    font-family: inherit;
}

.copy-button:hover {
    background: var(--color-primary-hover);
}

.copy-button.is-copied {
    background: #16a34a;
}

.manual-config {
    margin: 8px 0 16px;
    background: var(--color-code-bg);
    border-radius: 8px;
    padding: 4px 14px;
}

.manual-config summary {
    cursor: pointer;
    padding: 8px 0;
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--color-text-muted);
    user-select: none;
}

.manual-config summary:hover {
    color: var(--color-primary);
}

.manual-config[open] summary {
    margin-bottom: 4px;
}

.manual-config .server-config {
    background: transparent;
    padding: 0 0 8px;
    margin: 0;
}

.config-empty {
    color: var(--color-text-muted);
    font-style: italic;
}

.faq {
    margin-top: 48px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 28px;
    box-shadow: var(--shadow-card);
}

.faq h2 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: 16px;
}

.faq details {
    border-bottom: 1px solid var(--color-border);
    padding: 12px 0;
}

.faq details:last-child {
    border-bottom: none;
}

.faq summary {
    cursor: pointer;
    font-weight: 500;
    color: var(--color-text);
    padding: 4px 0;
    user-select: none;
}

.faq summary:hover {
    color: var(--color-primary);
}

.faq details p {
    margin-top: 8px;
    color: var(--color-text-muted);
    padding-left: 4px;
}

@media (max-width: 600px) {
    .container {
        padding: 24px 16px 64px;
    }

    .header h1 {
        font-size: 1.5rem;
    }

    .step {
        padding: 20px;
        flex-direction: column;
        gap: 12px;
    }

    .step-number {
        width: 36px;
        height: 36px;
    }

    .config-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }

    .config-label {
        width: auto;
    }

    .config-value {
        width: 100%;
    }
}