:root {
    /* Brand */
    --primary: #146298;
    --primary-hover: #0F527E;
    --primary-light: #EAF4FB;
    --primary-lighter: #F5FAFD;
    --primary-dark: #0B456B;
    --secondary: #D4D7DB;
    --accent: #2F80C3;

    /* Text */
    --heading: #1D2736;
    --text: #55657D;
    --text-light: #7A8799;
    --muted: #A4AFBF;

    /* Backgrounds */
    --white: #fff;
    --background: #F7F9FC;
    --surface: #FFFFFF;
    --surface-alt: #FBFCFE;
    --soft: var(--primary-lighter);
    --dark: #071A2F;
    --card: #FFFFFF;

    /* Borders */
    --border: #E4EAF2;
    --border-light: #F0F4F8;

    /* Buttons */
    --btn-primary: var(--primary);
    --btn-primary-hover: var(--primary-hover);
    --btn-secondary: #fff;

    /* Status */
    --success: #22A559;
    --warning: #F5A623;
    --danger: #DC3545;

    /* Radius */
    --radius-sm: 8px;
    --radius: 14px;
    --radius-lg: 22px;
    --radius-xl: 34px;

    /* Shadows */
    --shadow-sm: 0 4px 12px rgba(20, 98, 152, .08);
    --shadow: 0 14px 34px rgba(20, 98, 152, .10);
    --shadow-lg: 0 28px 70px rgba(20, 98, 152, .14);

    /* Layout */
    --container: 1180px;
    --section: 90px;
    --transition: .25s ease;
}

* {
    box-sizing: border-box
}

html {
    scroll-behavior: smooth
}

body {
    margin: 0;
    font-family: Inter, Arial, sans-serif;
    color: var(--text);
    background: var(--background);
    line-height: 1.6
}

a {
    color: inherit
}

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

.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px
}

.section {
    padding: var(--section) 0
}

.section-soft {
    background: linear-gradient(135deg, #fff 0%, var(--soft) 100%)
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(255, 255, 255, .9);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border)
}

.header-inner {
    height: 78px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    font-weight: 700;
    color: var(--heading);
    font-size: 22px
}

.brand strong {
    color: var(--primary)
}

.brand-logo {
    height: 44px;
    width: auto;
    display: block
}

.brand-mark {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    border: 2px solid var(--primary);
    color: var(--primary);
    display: grid;
    place-items: center
}

.nav {
    display: flex;
    gap: 28px;
    font-size: 14px;
    font-weight: 700;
    color: var(--heading)
}

.nav a {
    text-decoration: none
}

.nav a:hover {
    color: var(--primary)
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px
}

.icon-btn {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    text-decoration: none;
    color: var(--heading)
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 24px;
    background: var(--btn-primary);
    color: #fff;
    border: 1px solid var(--btn-primary);
    border-radius: var(--radius);
    font-weight: 800;
    text-decoration: none;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    cursor: pointer
}

.btn:hover {
    background: var(--btn-primary-hover);
    transform: translateY(-2px)
}

.btn-outline {
    background: #fff;
    color: var(--primary)
}

.btn-outline:hover {
    background: var(--soft);
    color: var(--primary)
}

.btn-small {
    padding: 10px 18px
}

.btn-full {
    width: 100%;
    margin-top: 18px
}

.button-row {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-top: 32px
}

.hero {
    padding: 95px 0
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 70px;
    align-items: center
}

.eyebrow {
    display: inline-flex;
    padding: 8px 14px;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 900;
    letter-spacing: .08em;
    text-transform: uppercase
}

.hero h1,
.section h2,
.newsletter h2 {
    color: var(--heading);
    line-height: 1.05;
    margin: 22px 0 20px;
    font-size: 64px
}

.hero h1 span {
    color: var(--primary)
}

.hero p,
.lead {
    font-size: 18px;
    color: var(--text);
    max-width: 620px
}

.hero-art {
    position: relative;
    min-height: 430px
}

.bubble {
    position: absolute;
    right: 0;
    top: -30px;
    width: 520px;
    height: 420px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-lighter));
    border-radius: 42% 58% 50% 50%;
    z-index: 0
}

.dots {
    position: absolute;
    right: 40px;
    top: 45px;
    width: 150px;
    height: 110px;
    background-image: radial-gradient(var(--accent) 2px, transparent 2px);
    background-size: 22px 22px;
    opacity: .45
}

.code-window {
    position: absolute;
    left: 10px;
    top: 80px;
    width: 440px;
    background: #1E293B;
    color: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 24px;
    z-index: 2
}

.window-dots {
    display: flex;
    gap: 10px;
    margin-bottom: 18px
}

.window-dots span {
    width: 13px;
    height: 13px;
    border-radius: 50%;
    background: #ff5f57
}

.window-dots span:nth-child(2) {
    background: #ffbd2e
}

.window-dots span:nth-child(3) {
    background: #28c840
}

pre {
    margin: 0;
    white-space: pre-wrap;
    font-size: 15px;
    line-height: 1.8
}

.check-card {
    position: absolute;
    right: 20px;
    top: 145px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    padding: 22px 30px;
    width: 240px;
    z-index: 3
}

.check-card p {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--heading);
    font-weight: 800
}

.check-card i {
    color: var(--success)
}

.stats {
    background: #fff;
    border-block: 1px solid var(--border)
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    padding-top: 28px;
    padding-bottom: 28px
}

.stats-grid div {
    display: grid;
    grid-template-columns: 46px 1fr;
    column-gap: 14px;
    align-items: center
}

.stats-grid i {
    grid-row: 1/3;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: var(--primary);
    color: #fff
}

.stats-grid strong {
    color: var(--heading)
}

.stats-grid span {
    font-size: 14px
}

.section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 30px;
    margin-bottom: 34px
}

.section h2 {
    font-size: 42px;
    margin: 12px 0
}

.text-link {
    color: var(--primary);
    font-weight: 800;
    text-decoration: none
}

.card-grid {
    display: grid;
    gap: 22px
}

.six {
    grid-template-columns: repeat(6, 1fr)
}

.four {
    grid-template-columns: repeat(4, 1fr)
}

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

.category-card,
.download-card,
.tool-card,
.feature-panel {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    padding: 24px
}

.category-card i,
.tool-card i {
    font-size: 34px;
    margin-bottom: 16px
}

.category-card h3,
.download-card h3,
.tool-card h3 {
    margin: 0 0 8px;
    color: var(--heading)
}

.category-card p,
.download-card p,
.tool-card p {
    font-size: 14px
}

.category-card a {
    font-weight: 800;
    color: var(--primary);
    text-decoration: none
}

.html {
    color: #E5532D
}

.css {
    color: #2B74E4
}

.js {
    color: #F3BF28
}

.jquery {
    color: #0868AC
}

.php {
    color: #6C7EB7
}

.sql {
    color: #8B5CF6
}

.split-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center
}

.tick-list {
    padding: 0;
    list-style: none;
    margin: 25px 0
}

.tick-list li {
    margin: 10px 0;
    color: var(--heading);
    font-weight: 700
}

.tick-list li:before {
    content: '✓';
    color: var(--success);
    margin-right: 10px
}

.lesson {
    display: flex;
    gap: 18px;
    align-items: center;
    border: 1px solid var(--border);
    padding: 18px;
    border-radius: var(--radius);
    margin-bottom: 14px
}

.lesson span {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: var(--primary);
    color: #fff;
    font-weight: 900
}

.lesson strong {
    color: var(--heading)
}

.product-thumb {
    height: 170px;
    border-radius: var(--radius);
    background: linear-gradient(135deg, #061A30, var(--primary));
    display: grid;
    place-items: center;
    color: #fff;
    font-size: 54px;
    margin-bottom: 20px
}

.download-card strong {
    display: block;
    color: var(--heading);
    font-size: 22px;
    margin-top: 10px
}

.newsletter {
    background: linear-gradient(135deg, var(--dark), var(--primary));
    color: #fff;
    padding: 55px 0
}

.newsletter-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    align-items: center
}

.newsletter h2 {
    color: #fff;
    font-size: 36px;
    margin: 0 0 8px
}

.newsletter p {
    margin: 0;
    color: #D9ECF8
}

.newsletter form {
    display: flex;
    gap: 12px
}

.newsletter input {
    width: 100%;
    padding: 15px 18px;
    border: 0;
    border-radius: var(--radius);
    font-size: 15px
}

.footer {
    background: #fff;
    padding: 55px 0 25px
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 34px
}

.footer h4 {
    color: var(--heading);
    margin: 0 0 12px
}

.footer a {
    display: block;
    text-decoration: none;
    margin: 8px 0
}

.copyright {
    border-top: 1px solid var(--border);
    margin-top: 35px;
    padding-top: 22px;
    font-size: 14px;
    color: var(--muted)
}

@media(max-width:980px) {
    .nav {
        display: none
    }

    .hero-grid,
    .split-grid,
    .newsletter-inner {
        grid-template-columns: 1fr
    }

    .hero h1 {
        font-size: 48px
    }

    .six,
    .four,
    .three,
    .stats-grid {
        grid-template-columns: repeat(2, 1fr)
    }

    .hero-art {
        min-height: 500px
    }
}

@media(max-width:620px) {
    .container {
        padding: 0 18px
    }

    .section {
        padding: 60px 0
    }

    .hero {
        padding: 65px 0
    }

    .hero h1 {
        font-size: 40px
    }

    .six,
    .four,
    .three,
    .stats-grid,
    .footer-grid {
        grid-template-columns: 1fr
    }

    .code-window {
        width: 100%;
        left: 0
    }

    .check-card {
        position: relative;
        right: auto;
        top: 350px;
        width: 100%
    }

    .newsletter form {
        flex-direction: column
    }

    .section-head {
        display: block
    }
}

/* Listing pages */
.page-hero {
    padding: 70px 0;
    background: linear-gradient(135deg, #fff 0%, var(--soft) 100%);
    border-bottom: 1px solid var(--border)
}

.page-hero h1 {
    font-size: 52px;
    line-height: 1.08;
    color: var(--heading);
    margin: 16px 0 14px
}

.page-hero p {
    max-width: 760px;
    font-size: 18px
}

.breadcrumbs {
    font-size: 14px;
    color: var(--muted);
    font-weight: 700;
    margin: 0px 0px 10px 0px;
}

.breadcrumbs a {
    text-decoration: none;
    color: var(--primary)
}

.page-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 30px;
    align-items: start
}

.sidebar {
    position: sticky;
    top: 100px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    padding: 22px
}

.sidebar h3 {
    color: var(--heading);
    margin: 0 0 12px
}

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

.filter-list a {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    padding: 10px 12px;
    text-decoration: none;
    border-radius: var(--radius-sm);
    font-weight: 700;
    color: var(--heading)
}

.filter-list a:hover,
.filter-list a.active {
    background: var(--primary-light);
    color: var(--primary)
}

.search-bar {
    display: flex;
    gap: 12px;
    margin-bottom: 22px
}

.search-bar input {
    width: 100%;
    padding: 15px 18px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 15px;
    background: #fff
}

.snippet-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 14px
}

.snippet-card h3 {
    margin: 0;
    color: var(--heading)
}

.snippet-card p {
    margin: 0
}

.tag-row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap
}

.tag {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 12px;
    font-weight: 800;
    padding: 6px 10px
}

.card-meta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    font-size: 13px;
    font-weight: 700;
    color: var(--muted)
}

.card-meta i {
    color: var(--primary);
    margin-right: 5px
}

.card-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: auto
}

.pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 34px
}

.pagination a {
    width: 42px;
    height: 42px;
    border: 1px solid var(--border);
    background: #fff;
    border-radius: var(--radius-sm);
    display: grid;
    place-items: center;
    text-decoration: none;
    font-weight: 800;
    color: var(--heading)
}

.pagination a.active,
.pagination a:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary)
}

/* Tutorial page */
.tutorial-wrap {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 34px;
    align-items: start
}

.tutorial-article {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 38px
}

.tutorial-article h1 {
    font-size: 48px;
    line-height: 1.08;
    color: var(--heading);
    margin: 16px 0
}

.tutorial-article h2 {
    color: var(--heading);
    font-size: 30px;
    margin: 40px 0 14px
}

.tutorial-article h3 {
    color: var(--heading);
    font-size: 22px;
    margin: 28px 0 10px
}

.tutorial-article p {
    font-size: 17px
}

.tutorial-meta {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    margin: 18px 0 26px
}

.tutorial-meta span {
    background: var(--soft);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 8px 12px;
    font-size: 13px;
    font-weight: 800;
    color: var(--heading)
}

.code-block {
    background: #1E293B;
    border-radius: var(--radius);
    overflow: hidden;
    margin: 18px 0 28px;
    box-shadow: var(--shadow)
}

.code-head {
    height: 46px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    border-bottom: 1px solid rgba(255, 255, 255, .08);
    color: #D9ECF8;
    font-size: 13px;
    font-weight: 800
}

.copy-btn {
    background: rgba(255, 255, 255, .08);
    border: 1px solid rgba(255, 255, 255, .14);
    color: #fff;
    border-radius: var(--radius-sm);
    padding: 7px 10px;
    font-weight: 800
}

.code-block pre {
    padding: 20px;
    color: #E2E8F0;
    overflow: auto;
    white-space: pre;
    font-size: 14px
}

.note-box {
    border-left: 4px solid var(--primary);
    background: var(--primary-lighter);
    border-radius: var(--radius-sm);
    padding: 18px;
    margin: 24px 0
}

.toc {
    position: sticky;
    top: 100px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    padding: 22px
}

.toc h3 {
    margin: 0 0 12px;
    color: var(--heading)
}

.toc a {
    display: block;
    text-decoration: none;
    padding: 9px 0;
    border-bottom: 1px solid var(--border);
    font-weight: 700;
    color: var(--text)
}

.toc a:hover {
    color: var(--primary)
}

.download-panel {
    margin-top: 22px;
    background: linear-gradient(135deg, var(--dark), var(--primary));
    color: #fff;
    border-radius: var(--radius);
    padding: 22px
}

.download-panel h3 {
    margin: 0 0 8px;
    color: #fff
}

.download-panel p {
    color: #D9ECF8;
    font-size: 14px
}

.download-panel .btn {
    background: #fff;
    color: var(--primary);
    border-color: #fff
}

@media(max-width:980px) {

    .page-layout,
    .tutorial-wrap {
        grid-template-columns: 1fr
    }

    .sidebar,
    .toc {
        position: static
    }

    .page-hero h1,
    .tutorial-article h1 {
        font-size: 40px
    }

    .tutorial-article {
        padding: 24px
    }
}

/* Downloads and tools pages */
.product-card {
    display: flex;
    flex-direction: column
}

.download-info-strip {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
    margin-top: 34px
}

.download-info-strip div {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px;
    display: grid;
    grid-template-columns: 42px 1fr;
    column-gap: 12px;
    box-shadow: var(--shadow-sm)
}

.download-info-strip i {
    grid-row: 1/3;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: var(--primary-light);
    color: var(--primary)
}

.download-info-strip strong {
    color: var(--heading)
}

.download-info-strip span {
    font-size: 14px
}

.product-detail-section {
    background: linear-gradient(135deg, #fff 0%, var(--background) 100%)
}

.product-detail-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 34px;
    align-items: start
}

.product-detail-main,
.product-buy-box,
.tool-workspace,
.tool-info-panel {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 34px
}

.product-detail-main h1 {
    font-size: 50px;
    line-height: 1.08;
    color: var(--heading);
    margin: 18px 0
}

.product-detail-main h2 {
    color: var(--heading);
    font-size: 30px;
    margin: 38px 0 12px
}

.product-preview {
    height: 330px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, #061A30, var(--primary));
    display: grid;
    place-items: center;
    color: #fff;
    font-size: 90px;
    margin: 24px 0
}

.product-buy-box {
    position: sticky;
    top: 100px
}

.product-buy-box h3 {
    color: var(--heading);
    margin-top: 0
}

.price {
    display: block;
    color: var(--heading);
    font-size: 42px;
    margin: 10px 0
}

.buy-features {
    border-top: 1px solid var(--border);
    margin-top: 24px;
    padding-top: 18px;
    display: grid;
    gap: 12px
}

.buy-features span {
    font-weight: 800;
    color: var(--heading)
}

.buy-features i {
    color: var(--primary);
    margin-right: 8px
}

.tool-search {
    max-width: 780px;
    margin-inline: auto;
    margin-bottom: 34px
}

.tool-detail-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 360px;
    gap: 34px;
    align-items: start
}

.tool-area {
    display: grid;
    gap: 10px;
    margin-bottom: 18px
}

.tool-area label {
    font-weight: 900;
    color: var(--heading)
}

.tool-area textarea {
    min-height: 260px;
    width: 100%;
    resize: vertical;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px;
    font-family: Consolas, Monaco, monospace;
    font-size: 14px;
    line-height: 1.7;
    color: var(--heading);
    background: var(--surface-alt)
}

.tool-actions-row {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin: 18px 0 22px
}

.tool-info-panel {
    position: sticky;
    top: 100px
}

.tool-info-panel h3,
.tool-info-panel h4 {
    color: var(--heading);
    margin-top: 0
}

@media(max-width:980px) {

    .product-detail-grid,
    .tool-detail-grid {
        grid-template-columns: 1fr
    }

    .product-buy-box,
    .tool-info-panel {
        position: static
    }

    .download-info-strip {
        grid-template-columns: 1fr
    }

    .product-detail-main h1 {
        font-size: 40px
    }
}

/* Contact page */
.contact-grid{
    display:grid;
    grid-template-columns:1.1fr .9fr;
    gap:34px;
    align-items:start;
}
.contact-form,
.contact-sidebar,
.contact-card{
    background:#fff;
    border:1px solid var(--border);
    border-radius:var(--radius-lg);
    box-shadow:var(--shadow-sm);
}
.contact-form{padding:34px;}
.contact-sidebar{padding:24px;display:grid;gap:20px;}
.form-row{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:18px;
    margin-bottom:18px;
}
.form-group{
    display:flex;
    flex-direction:column;
    gap:8px;
    margin-bottom:18px;
}
.form-group label{
    font-weight:800;
    color:var(--heading);
}
.form-group input,
.form-group select,
.form-group textarea{
    width:100%;
    padding:15px 16px;
    border:1px solid var(--border);
    border-radius:var(--radius);
    background:#fff;
    color:var(--heading);
    font-size:15px;
    transition:var(--transition);
}
.form-group textarea{
    min-height:180px;
    resize:vertical;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus{
    outline:none;
    border-color:var(--primary);
    box-shadow:0 0 0 4px rgba(20,98,152,.12);
}
.contact-card{
    padding:22px;
    display:flex;
    gap:16px;
    align-items:flex-start;
}
.contact-card i{
    width:52px;
    height:52px;
    display:grid;
    place-items:center;
    border-radius:50%;
    background:var(--primary-light);
    color:var(--primary);
    font-size:20px;
}
.contact-card h3{
    margin:0 0 6px;
    color:var(--heading);
}
.contact-card p,
.contact-card a{
    margin:0;
    color:var(--text);
    text-decoration:none;
}
.contact-card a:hover{color:var(--primary);}
@media(max-width:980px){
    .contact-grid,
    .form-row{
        grid-template-columns:1fr;
    }
}