body {
    margin: 0;
    padding: 0;
}

.sdk-homepage,
.sdk-homepage * {
    box-sizing: border-box;
}

.sdk-homepage {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
    color: #1f2937;
    background: #ffffff;
    line-height: 1.75;
}

.sdk-container {
    width: min(1200px, calc(100% - 40px));
    margin: 0 auto;
}

.sdk-topbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(15, 23, 42, 0.06);
}

.sdk-topbar-inner {
    min-height: 82px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.sdk-brand a {
    text-decoration: none;
    font-size: 28px;
    font-weight: 800;
    color: #111827;
    letter-spacing: -0.02em;
}

.sdk-nav {
    display: flex;
    align-items: center;
    gap: 34px;
    flex: 1;
    justify-content: center;
    margin: 0;
    padding: 0;
    list-style: none;
}

.sdk-nav ul {
    display: flex;
    align-items: center;
    gap: 34px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.sdk-nav li {
    margin: 0;
    padding: 0;
    list-style: none;
}

.sdk-nav a {
    text-decoration: none;
    color: #1f2937;
    font-size: 16px;
    font-weight: 600;
    transition: color 0.25s ease;
}

.sdk-nav a:hover {
    color: #2563eb;
}

.sdk-topbar-action a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 46px;
    padding: 0 20px;
    border-radius: 12px;
    text-decoration: none;
    background: #2563eb;
    color: #fff;
    font-weight: 700;
    transition: all 0.25s ease;
}

.sdk-topbar-action a:hover {
    transform: translateY(-1px);
    background: #1d4ed8;
}

.sdk-hero-section {
    padding: 72px 0 88px;
    background:
        radial-gradient(circle at top left, rgba(37, 99, 235, 0.10), transparent 30%),
        linear-gradient(180deg, #f8fbff 0%, #ffffff 100%);
}

.sdk-hero-grid {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 48px;
    align-items: center;
}

.sdk-hero-badge {
    display: inline-block;
    padding: 12px 18px;
    border-radius: 999px;
    background: #e8efff;
    color: #4f6edb;
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 22px;
}

.sdk-hero-title {
    font-size: clamp(42px, 6vw, 76px);
    line-height: 1.02;
    letter-spacing: -0.04em;
    font-weight: 900;
    color: #0f172a;
    margin: 0 0 24px;
}

.sdk-hero-desc {
    font-size: 18px;
    color: #64748b;
    line-height: 1.95;
    margin: 0 0 28px;
    max-width: 720px;
}

.sdk-hero-actions {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

.sdk-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 52px;
    padding: 0 24px;
    border-radius: 14px;
    text-decoration: none;
    font-weight: 700;
    transition: all 0.25s ease;
}

.sdk-btn-primary {
    background: #2563eb;
    color: #fff;
    box-shadow: 0 12px 30px rgba(37, 99, 235, 0.20);
}

.sdk-btn-primary:hover {
    background: #1d4ed8;
    transform: translateY(-2px);
}

.sdk-btn-secondary {
    background: #fff;
    color: #111827;
    border: 1px solid #dbe3ef;
}

.sdk-btn-secondary:hover {
    border-color: #2563eb;
    color: #2563eb;
}

.sdk-hero-features {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.sdk-hero-features span {
    padding: 10px 14px;
    border: 1px solid #e5e7eb;
    border-radius: 999px;
    background: #fff;
    font-size: 14px;
    font-weight: 600;
    color: #475569;
}

.sdk-hero-image img {
    display: block;
    width: 100%;
    border-radius: 26px;
    box-shadow: 0 24px 60px rgba(15, 23, 42, 0.14);
}

.sdk-section-heading {
    text-align: center;
    max-width: 760px;
    margin: 0 auto 46px;
}

.sdk-section-tag {
    display: inline-block;
    padding: 8px 14px;
    border-radius: 999px;
    background: #e8efff;
    color: #4f6edb;
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 14px;
}

.sdk-section-heading h2 {
    margin: 0 0 12px;
    font-size: 40px;
    line-height: 1.2;
    color: #0f172a;
}

.sdk-section-heading p {
    margin: 0;
    font-size: 17px;
    color: #64748b;
}

.sdk-summary-section,
.sdk-platform-section,
.sdk-solutions-section,
.sdk-process-section,
.sdk-industry-section,
.sdk-testimonial-section,
.sdk-support-section,
.sdk-intro-section,
.sdk-faq-section {
    padding: 88px 0;
}

.sdk-summary-section,
.sdk-solutions-section,
.sdk-testimonial-section,
.sdk-faq-section {
    background: #f8fbff;
}

.sdk-summary-grid,
.sdk-platform-grid,
.sdk-solutions-grid,
.sdk-support-grid {
    display: grid;
    gap: 22px;
}

.sdk-summary-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.sdk-platform-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

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

.sdk-support-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.sdk-summary-card,
.sdk-platform-card,
.sdk-solution-card,
.sdk-support-card,
.sdk-faq-item {
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 20px;
    padding: 28px 22px;
    box-shadow: 0 14px 36px rgba(15, 23, 42, 0.05);
}

.sdk-summary-icon {
    width: 54px;
    height: 54px;
    border-radius: 14px;
    background: #eef4ff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 14px;
}

.sdk-summary-card h3,
.sdk-platform-card h3,
.sdk-solution-card h3,
.sdk-support-card h3,
.sdk-faq-item h3 {
    font-size: 21px;
    margin: 0 0 10px;
    color: #111827;
}

.sdk-summary-card p,
.sdk-platform-card p,
.sdk-solution-card p,
.sdk-support-card p,
.sdk-faq-item p {
    margin: 0;
    color: #64748b;
    font-size: 15px;
    line-height: 1.85;
}

.sdk-process-grid {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 22px;
}

.sdk-process-item {
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 20px;
    padding: 28px 22px;
    box-shadow: 0 14px 36px rgba(15, 23, 42, 0.05);
}

.sdk-process-num {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    background: #2563eb;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    margin-bottom: 16px;
}

.sdk-process-item h3 {
    margin: 0 0 10px;
    font-size: 20px;
    color: #111827;
}

.sdk-process-item p {
    margin: 0;
    color: #64748b;
    line-height: 1.85;
}

.sdk-industry-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    justify-content: center;
}

.sdk-industry-tag {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 18px;
    background: #fff;
    border: 1px solid #dbe3ef;
    border-radius: 999px;
    color: #334155;
    font-weight: 600;
    box-shadow: 0 8px 20px rgba(15, 23, 42, 0.04);
}

.sdk-testimonial-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
}

.sdk-testimonial-card {
    margin: 0;
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 20px;
    padding: 28px 24px;
    box-shadow: 0 14px 36px rgba(15, 23, 42, 0.05);
}

.sdk-testimonial-card p {
    margin: 0 0 16px;
    color: #334155;
    line-height: 1.95;
    font-size: 16px;
}

.sdk-testimonial-card cite {
    font-style: normal;
    color: #2563eb;
    font-weight: 700;
}

.sdk-intro-content {
    max-width: 920px;
    margin: 0 auto;
}

.sdk-intro-content h1,
.sdk-intro-content h2,
.sdk-intro-content h3,
.sdk-intro-content h4 {
    color: #111827;
    line-height: 1.3;
}

.sdk-intro-content h2 {
    font-size: 34px;
    margin: 56px 0 18px;
}

.sdk-intro-content h3 {
    font-size: 26px;
    margin: 40px 0 14px;
}

.sdk-intro-content h4 {
    font-size: 20px;
    margin: 28px 0 12px;
}

.sdk-intro-content p {
    color: #64748b;
    font-size: 17px;
    line-height: 1.95;
    margin-bottom: 18px;
}

.sdk-intro-content ul {
    list-style: none;
    padding-left: 0;
    margin: 20px 0;
}

.sdk-intro-content li {
    position: relative;
    padding-left: 22px;
    margin-bottom: 12px;
    color: #64748b;
}

.sdk-intro-content li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 11px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #2563eb;
}

.sdk-intro-content strong {
    color: #111827;
}

.sdk-intro-content img {
    display: block;
    max-width: 100%;
    height: auto;
    border-radius: 20px;
    margin: 30px auto;
    box-shadow: 0 18px 50px rgba(15, 23, 42, 0.10);
}

.sdk-faq-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
}

.sdk-cta-section {
    padding: 90px 0;
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
}

.sdk-cta-box {
    max-width: 920px;
    margin: 0 auto;
    text-align: center;
}

.sdk-cta-badge {
    display: inline-block;
    padding: 10px 16px;
    border-radius: 999px;
    background: rgba(255,255,255,0.14);
    color: #fff;
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 16px;
}

.sdk-cta-title {
    font-size: 42px;
    line-height: 1.25;
    color: #fff;
    margin: 0 0 14px;
}

.sdk-cta-desc {
    max-width: 720px;
    margin: 0 auto 28px;
    color: rgba(255,255,255,0.88);
    font-size: 17px;
    line-height: 1.9;
}

.sdk-telegram-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 58px;
    padding: 0 34px;
    border-radius: 999px;
    background: #fff;
    color: #2563eb;
    text-decoration: none;
    font-size: 22px;
    font-weight: 800;
    margin-bottom: 26px;
    box-shadow: 0 14px 34px rgba(0,0,0,0.14);
}

.sdk-telegram-button:hover {
    color: #1d4ed8;
}

.sdk-cta-features {
    display: flex;
    justify-content: center;
    gap: 22px;
    flex-wrap: wrap;
}

.sdk-cta-feature {
    color: #fff;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.sdk-footer {
    position: relative;
    display: block !important;
    width: 100% !important;
    max-width: 100% !important;
    clear: both !important;
    float: none !important;
    margin: 0 !important;
    padding: 0;
    background: #081327;
    color: #c7d2fe;
    z-index: 5;
    grid-column: 1 / -1 !important;
    justify-self: stretch !important;
    align-self: stretch !important;
    flex: 0 0 100% !important;
    order: 999 !important;
}

.sdk-footer .sdk-container {
    width: min(1200px, calc(100% - 40px));
    max-width: 1200px;
    margin: 0 auto;
}

.sdk-footer-top {
    display: grid;
    grid-template-columns: 1.2fr 0.9fr 0.9fr;
    gap: 40px;
    padding: 56px 0 28px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.sdk-footer-title,
.sdk-footer-heading {
    color: #fff;
    margin: 0 0 16px;
}

.sdk-footer-title {
    font-size: 32px;
    font-weight: 800;
}

.sdk-footer-heading {
    font-size: 22px;
    font-weight: 700;
}

.sdk-footer-desc,
.sdk-footer-list li,
.sdk-footer-copyright {
    color: rgba(255,255,255,0.68);
}

.sdk-footer-desc {
    line-height: 1.95;
    font-size: 16px;
    margin: 0;
}

.sdk-footer-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.sdk-footer-list li {
    margin-bottom: 10px;
    font-size: 16px;
}

.sdk-footer-list a {
    color: rgba(255,255,255,0.72);
    text-decoration: none;
}

.sdk-footer-list a:hover {
    color: #fff;
}

.sdk-footer-contact {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 54px;
    padding: 0 22px;
    border-radius: 14px;
    background: #1e3a8a;
    color: #fff;
    text-decoration: none;
    font-size: 18px;
    font-weight: 800;
    margin-top: 12px;
}

.sdk-footer-bottom {
    padding: 24px 0 34px;
    text-align: center;
}

.sdk-footer-copyright {
    margin: 0;
    font-size: 15px;
    line-height: 1.8;
}

@media (max-width: 1100px) {
    .sdk-summary-grid,
    .sdk-platform-grid,
    .sdk-support-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .sdk-solutions-grid,
    .sdk-testimonial-grid,
    .sdk-process-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .sdk-footer-top {
        grid-template-columns: 1fr 1fr;
    }

    .sdk-footer-brand {
        grid-column: 1 / -1;
    }
}

@media (max-width: 900px) {
    .sdk-topbar-inner {
        flex-wrap: wrap;
        justify-content: center;
        padding: 16px 0;
    }

    .sdk-nav,
    .sdk-nav ul {
        order: 3;
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
        gap: 18px;
    }

    .sdk-hero-grid {
        grid-template-columns: 1fr;
    }

    .sdk-hero-title {
        font-size: clamp(38px, 10vw, 58px);
    }
}

@media (max-width: 768px) {
    .sdk-container {
        width: min(1200px, calc(100% - 24px));
    }

    .sdk-cta-title,
    .sdk-section-heading h2 {
        font-size: 30px;
    }

    .sdk-summary-grid,
    .sdk-platform-grid,
    .sdk-solutions-grid,
    .sdk-process-grid,
    .sdk-testimonial-grid,
    .sdk-support-grid,
    .sdk-faq-list,
    .sdk-footer-top {
        grid-template-columns: 1fr;
    }

    .sdk-hero-actions {
        flex-direction: column;
    }

    .sdk-btn,
    .sdk-telegram-button {
        width: 100%;
    }
}