@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&display=swap');

:root {
    --primary: #20232c;
    --accent: #47c27c;
    --light: #f9f9fa;
    --gray: #ececec;
    --text-muted: #6c737c;
    --card-bg: #fff;
    --border: #ececec;
    --footer-bg: #181a1b;
    --header-bg: #181a1b;
    --pattern: rgba(44,62,81,0.07);
}

body {
    font-family: 'Inter', Arial, sans-serif;
    background: var(--light);
    color: var(--primary);
    margin: 0;
    min-height: 100vh;
}

.bg-pattern {
    position: fixed;
    z-index: 0;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background:
        linear-gradient(90deg, var(--pattern) 1px, transparent 1px),
        linear-gradient(var(--pattern) 1px, transparent 1px);
    background-size: 36px 36px;
    pointer-events: none;
}

.header {
    background: var(--header-bg);
    padding: 1.1rem 0;
    box-shadow: 0 2px 8px rgba(44,62,81,0.08);
}

.flex-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo-bg {
    background: var(--header-bg);
    padding: 0.7rem 1.2rem;
    border-radius: 14px;
    display: flex;
    align-items: center;
    box-shadow: 0 3px 14px #1112;
}

.bst-logo {
    height: 42px;
    width: auto;
    max-width: 220px;
    object-fit: contain;
    filter: drop-shadow(0 2px 4px #2226);
}

/* Burger menu styles */
.burger {
    background: none;
    border: none;
    color: #fff;
    font-size: 2.1rem;
    cursor: pointer;
    display: none;
    margin-right: 0.4rem;
    margin-left: 0.2rem;
    padding: 0.1em 0.2em;
    transition: color 0.2s;
}
.burger.active {
    color: var(--accent);
}

.main-nav {
    position: relative;
    display: flex;
    align-items: center;
}

.main-nav ul {
    display: flex;
    gap: 1.25rem;
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
    flex-wrap: wrap;
    transition: all 0.3s;
}

.main-nav a {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.88rem;
    transition: color 0.2s;
    padding: 0.09rem 0.32rem;
    border-radius: 7px;
    letter-spacing: 0.03em;
}
.main-nav a:hover {
    color: var(--accent);
    background: #212325;
}

/* Responsive menu */
@media (max-width: 900px) {
    .main-nav ul {
        gap: 1rem;
    }
}

@media (max-width: 700px) {
    .main-nav {
        flex-direction: row;
    }
    .burger {
        display: block;
        z-index: 22;
    }
    .main-nav ul {
        position: absolute;
        top: 100%;
        right: 0;
        background: var(--header-bg);
        box-shadow: 0 8px 24px #0002;
        border-radius: 0 0 16px 16px;
        flex-direction: column;
        gap: 0;
        width: 220px;
        max-width: 88vw;
        padding: 0.8rem 0.4rem;
        opacity: 0;
        pointer-events: none;
        transform: translateY(-18px);
        transition: all 0.25s cubic-bezier(.55,.19,.42,.98);
    }
    .main-nav ul.show-menu {
        opacity: 1;
        pointer-events: auto;
        transform: translateY(0);
    }
    .main-nav ul li {
        width: 100%;
        margin-bottom: 0.5rem;
        text-align: right;
    }
    .main-nav ul li:last-child {
        margin-bottom: 0;
    }
    .main-nav a {
        font-size: 1rem;
        width: 97%;
        display: inline-block;
        padding: 0.6rem 0.4rem;
    }
    .logo-bg {
        padding: 0.5rem 0.8rem;
        max-width: 120px;
    }
    .bst-logo {
        height: 28px;
        max-width: 120px;
    }
}

/* Spacing for main content and wrapper */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem; /* left/right spacing */
    position: relative;
    z-index: 2;
}

/* Add extra spacing on very small screens */
@media (max-width: 700px) {
    .container {
        padding: 0 1rem;
    }
}
@media (max-width: 500px) {
    .container {
        padding: 0 0.5rem;
    }
}

.main-content {
    padding-top: 2.8rem;
}

.row-sections {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    margin-bottom: 2rem;
}
.col-6 {
    flex: 1 1 380px;
    min-width: 320px;
}

.main-title {
    font-size: 2.4rem;
    font-weight: 700;
    margin-top: 3.2rem;
    margin-bottom: 1.1rem;
    color: var(--primary);
    letter-spacing: -1px;
}
.subtitle {
    font-size: 1.13rem;
    color: var(--text-muted);
    margin-bottom: 2.2rem;
}
.section {
    margin-bottom: 2.3rem;
    background: transparent;
}
.section-title {
    font-size: 1.19rem;
    font-weight: 700;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 0.65em;
    margin-bottom: 0.7rem;
    background: none;
}
.section-block {
    background: var(--card-bg);
    border-radius: 16px;
    box-shadow: 0 2px 18px rgba(44,62,81,0.08);
    border: 1px solid var(--border);
    padding: 1.5rem 1.3rem 1rem 1.3rem;
    margin-bottom: 0.5rem;
}
.section-subtitle {
    font-size: 1rem;
    font-weight: 600;
    color: var(--accent);
    margin-top: 0.6rem;
    margin-bottom: 0.25rem;
}
.section-block ul {
    padding-left: 1.15rem;
    margin: 0;
    font-size: 0.98rem;
    color: var(--primary);
}
.section-block ul li {
    margin-bottom: 0.34em;
    line-height: 1.45;
}
blockquote {
    margin: 0.8rem 0 0.6rem 0;
    padding: 0.5rem 1.2rem;
    background: var(--gray);
    border-left: 4px solid var(--accent);
    border-radius: 7px;
    font-size: 0.97rem;
    color: var(--primary);
    font-style: normal;
}
.dev-steps-graphic {
    margin-bottom: 0.7rem;
    overflow-x: auto;
}
.dev-steps-list {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    list-style-type: none;
    padding-left: 0;
    margin: 0 0 0.5rem 0;
}
.dev-steps-list li {
    background: var(--gray);
    border-radius: 14px;
    padding: 0.7em 1.3em;
    font-weight: 600;
    color: var(--primary);
    display: flex;
    align-items: center;
    font-size: 0.99em;
    box-shadow: 0 2px 10px rgba(44,62,81,0.05);
    min-width: 220px;
}
.step-circle {
    background: var(--accent);
    color: #fff;
    border-radius: 50%;
    width: 1.5em;
    height: 1.5em;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-right: 0.7em;
    font-weight: 700;
    font-size: 1em;
}
.footer {
    background: var(--footer-bg);
    padding: 2rem 0;
    text-align: center;
    color: #eee;
    margin-top: 2.5rem;
}
.footer-content a {
    color: var(--accent);
    text-decoration: none;
}
.footer-content a:hover {
    color: #fff;
}

@media (max-width: 1100px) {
    .container {
        padding: 0 1rem;
    }
}
@media (max-width: 900px) {
    .main-title {
        font-size: 1.5rem;
    }
    .section-block {
        padding: 1rem 0.5rem 0.7rem 0.7rem;
    }
    .section-title {
        font-size: 1.05rem;
    }
    .row-sections {
        gap: 1rem;
    }
    .dev-steps-list {
        min-width: 100vw;
        gap: 0.7rem;
    }
    .dev-steps-list li {
        min-width: 160px;
        font-size: 0.93em;
        padding: 0.7em 0.7em;
    }
}
@media (max-width: 700px) {
    .row-sections {
        flex-direction: column;
    }
    .col-6 {
        min-width: unset;
    }
    .main-content {
        padding-top: 1.1rem;
    }
    .main-title {
        margin-top: 2.1rem;
    }
    .dev-steps-list {
        gap: 0.5rem;
    }
    .container {
        padding: 0 1.1rem;
    }
}
@media (max-width: 600px) {
    .main-title {
        font-size: 1.05rem;
        margin-top: 1.2rem;
    }
    .subtitle {
        font-size: 0.89rem;
    }
    .section-title {
        font-size: 0.99rem;
    }
    .section-block {
        padding: 0.8rem 0.3rem 0.5rem 0.4rem;
    }
    .dev-steps-list li {
        font-size: 0.89em;
        min-width: 120px;
        padding: 0.6em 0.35em;
    }
    .container {
        padding: 0 0.6rem;
    }
}