/* ============================================
   ProtonCS Landing Page - Stylesheet
   Strictly based on Figma design 10_221
   ============================================ */

/* --- Local Fonts (@font-face) --- */
@font-face {
    font-family: 'Plus Jakarta Sans';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url('assets/fonts/PlusJakartaSans-Regular.ttf') format('truetype');
}
@font-face {
    font-family: 'Plus Jakarta Sans';
    font-style: normal;
    font-weight: 500;
    font-display: swap;
    src: url('assets/fonts/PlusJakartaSans-Medium.ttf') format('truetype');
}
@font-face {
    font-family: 'Plus Jakarta Sans';
    font-style: normal;
    font-weight: 600;
    font-display: swap;
    src: url('assets/fonts/PlusJakartaSans-SemiBold.ttf') format('truetype');
}
@font-face {
    font-family: 'Plus Jakarta Sans';
    font-style: normal;
    font-weight: 700;
    font-display: swap;
    src: url('assets/fonts/PlusJakartaSans-Bold.ttf') format('truetype');
}
@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url('assets/fonts/Inter-Regular.ttf') format('truetype');
}
@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 600;
    font-display: swap;
    src: url('assets/fonts/Inter-SemiBold.ttf') format('truetype');
}

/* --- CSS Variables (from Figma design tokens) --- */
:root {
    /* Shade colors */
    --shade-dark-100: #000000;
    --shade-dark-70: rgba(0, 0, 0, 0.70);
    --shade-dark-50: rgba(0, 0, 0, 0.50);
    --shade-dark-40: rgba(0, 0, 0, 0.40);
    --shade-dark-20: rgba(0, 0, 0, 0.20);
    --shade-dark-10: rgba(0, 0, 0, 0.10);
    --shade-dark-8: rgba(0, 0, 0, 0.08);
    --shade-dark-6: rgba(0, 0, 0, 0.06);
    --shade-dark-2: rgba(0, 0, 0, 0.02);
    --shade-dark-0: rgba(0, 0, 0, 0);
    --shade-light-100: #FFFFFF;
    --shade-light-70: rgba(255, 255, 255, 0.70);

    /* Accent */
    --accent-green: #A3F172;

    /* Fonts */
    --font-display: 'Plus Jakarta Sans', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Layout */
    --content-width: 1100px;
    --page-width: 1440px;
    --nav-height: 82px;

    /* Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 20px;
    --radius-xl: 32px;
}

/* --- Reset --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    background: var(--shade-light-100);
    color: var(--shade-dark-100);
    line-height: 1.5;
    overflow-x: hidden;
}

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

a {
    text-decoration: none;
    color: inherit;
}

/* --- Navbar --- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--nav-height);
    background: var(--shade-light-70);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    border-bottom: 1px solid var(--shade-dark-8);
    z-index: 1000;
    transition: box-shadow 0.3s ease;
}

.navbar.scrolled {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.nav-container {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    padding: 0px;
    gap: 397px;
    margin: 0 auto;
    width: 1100px;
    max-width: 1100px;
    min-width: 0;
    height: 100%;
    flex: none;
    order: 0;
    flex-grow: 1;
    position: relative;
}

.nav-logo {
    flex-shrink: 0;
}

.nav-links {
    display: flex;
    gap: 24px;
    align-items: center;
}

.nav-link {
    font-size: 14px;
    font-family: var(--font-body);
    font-weight: 400;
    color: var(--shade-dark-100);
    transition: opacity 0.2s ease;
}

.nav-link:hover {
    opacity: 0.6;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--shade-dark-100);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(4px, -4px);
}

/* --- Hero Section --- */
.hero {
    position: relative;
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    height: 720px;
    padding-top: var(--nav-height);
    overflow: visible;
}

.hero-bg {
    position: absolute;
    top: 270px;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    height: 450px;
    z-index: 0;
    overflow: hidden;
}

.hero-bg-svg {
    width: 100%;
    height: 100%;
    display: block;
}

.hero-content {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 1100px;
    min-width: 0;
    margin: 0 auto;
    padding: 138px 0 0 0;
}

.hero-badge {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    width: fit-content;
    height: 38px;
    padding: 8px 12px;
    background: var(--shade-light-100);
    border-radius: var(--radius-md);
    outline: 0.75px solid var(--shade-dark-20);
    outline-offset: -0.75px;
    margin: 0 auto 42px;
}

.badge-icons {
    display: flex;
    align-items: center;
    gap: 0;
    width: 48px;
    height: 22px;
    position: relative;
    flex-shrink: 0;
}

.badge-icons img {
    position: absolute;
}

.badge-icons img:nth-child(1) { left: 0; }
.badge-icons img:nth-child(2) { left: 12px; }
.badge-icons img:nth-child(3) { left: 24px; }

.hero-badge span {
    font-size: 14px;
    font-family: var(--font-body);
    font-weight: 400;
    color: var(--shade-dark-100);
    margin-left: 12px;
    white-space: nowrap;
}

.hero-title {
    width: 100%;
    max-width: 1100px;
    min-width: 0;
    height: 192px;
    font-size: 80px;
    font-family: var(--font-display);
    font-weight: 400;
    line-height: 116%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--shade-dark-100);
    -webkit-text-stroke: 1px #4BC300;
    paint-order: stroke fill;
    border: none;
    padding: 0;
    margin: 0 0 24px 0;
}

.hero-title > span {
    display: inline-block;
}

.highlight {
    color: var(--accent-green);
    -webkit-text-stroke: 1px #4BC300;
    paint-order: stroke fill;
}

.hero-description {
    font-size: 14px;
    font-family: var(--font-body);
    font-weight: 400;
    color: var(--shade-dark-50);
    text-align: center;
    max-width: 1052px;
    margin: 0 auto;
    line-height: 1.6;
}

/* --- Section Badge (shared) --- */
.section-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 0 8px;
    height: 32px;
    background: var(--shade-dark-2);
    border: 1px solid var(--shade-dark-10);
    border-radius: var(--radius-sm);
    overflow: hidden;
    width: fit-content;
}

.section-badge img,
.section-badge svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

.section-badge span {
    font-size: 12px;
    font-family: var(--font-body);
    font-weight: 400;
    color: var(--shade-dark-70);
}

.section-title-center {
    font-size: 48px;
    font-family: var(--font-display);
    font-weight: 400;
    text-align: center;
    color: var(--shade-dark-100);
    line-height: 1.2;
}

/* --- Clients Section --- */
.clients {
    width: 100%;
    max-width: 100%;
    margin: 32px auto 0;
    padding: 0;
    display: flex;
    justify-content: center;
}

.clients-inner {
    width: 100%;
    max-width: 1100px;
    min-width: 0;
    margin: 0 auto;
    padding: 130px 0 130px;
    position: relative;
}

.clients .section-badge {
    margin: 0 auto;
    width: 97px;
    height: 32px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
}

.clients {
    text-align: center;
}

.clients .section-badge img {
    width: 14px;
    height: 14px;
}

.clients .section-badge span {
    font-size: 12px;
    font-family: 'Inter', sans-serif;
    font-weight: 400;
    color: var(--shade-dark-70);
    padding-right: 0;
}

.clients .section-title-center {
    font-size: 24px;
    font-family: var(--font-display);
    font-weight: 400;
    text-align: center;
    color: var(--shade-dark-50);
    margin-top: 16px;
    margin-bottom: 48px;
    width: 100%;
}

.client-logos {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 32px;
}

.logo-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo-row-2 {
    justify-content: center;
}

.logo-row-1 img {
    height: 48px;
    width: auto;
    object-fit: contain;
}

.logo-row-2 img {
    height: 48px;
    width: auto;
    object-fit: contain;
}

/* --- Solutions Section (Figma: 1100px container, cards 360×400, gap 10px) --- */
.solutions {
    width: 100%;
    max-width: 100%;
    padding: 130px clamp(20px, calc((100vw - 1100px) / 2), 250px);
    text-align: center;
}

.solutions .section-badge {
    margin-bottom: 16px;
}

.solutions .section-title-center {
    margin-bottom: 48px;
}

.solutions-grid {
    display: flex;
    gap: 10px;
    justify-content: center;
    width: 100%;
    max-width: 1100px;
    min-width: 0;
    margin: 0 auto;
}

.solution-card {
    flex: 1 1 0;
    min-width: 0;
    max-width: 360px;
    height: 400px;
    background: var(--shade-dark-2);
    border: 1px solid var(--shade-dark-10);
    border-radius: var(--radius-lg);
    padding: 24px;
    display: flex;
    flex-direction: column;
    text-align: left;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.solution-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.solution-tag {
    display: inline-flex;
    width: fit-content;
    height: 28px;
    padding: 4px 12px;
    background: var(--shade-dark-2);
    border: 0.75px solid var(--shade-dark-10);
    border-radius: 32px;
    font-size: 14px;
    font-family: var(--font-body);
    font-weight: 400;
    color: var(--shade-dark-100);
    margin-bottom: 16px;
    align-items: center;
    justify-content: center;
}

.solution-info {
    margin-bottom: 16px;
}

.solution-info h3 {
    font-size: 20px;
    font-family: var(--font-body);
    font-weight: 600;
    line-height: 1.2;
    color: var(--shade-dark-100);
    margin-bottom: 8px;
}

.solution-info p {
    font-size: 14px;
    font-family: var(--font-body);
    font-weight: 400;
    color: var(--shade-dark-50);
    line-height: 1.5;
}

.solution-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 8px;
    margin-top: auto;
}

/* --- AI + Big Data Section --- */
.ai-bigdata {
    width: 100%;
    max-width: 100%;
    padding: 130px clamp(20px, calc((100vw - 1100px) / 2), 157.50px);
    text-align: center;
}

.ai-bigdata .section-badge {
    margin-bottom: 16px;
}

.ai-bigdata .section-title-center {
    margin-bottom: 48px;
}

.ai-grid {
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: 100%;
    max-width: 1100px;
    min-width: 0;
    margin: 0 auto;
}

.ai-row {
    display: flex;
    gap: 10px;
    flex-wrap: nowrap;
}

.ai-row-1,
.ai-row-3 {
    height: 450px;
}

.ai-row-2 {
    height: 470px;
}

.ai-card {
    background: var(--shade-dark-2);
    border: 1px solid var(--shade-dark-10);
    border-radius: var(--radius-lg);
    padding: 32px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    text-align: left;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.ai-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

.ai-stack {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.ai-card-short {
    background: var(--shade-dark-2);
    border: 1px solid var(--shade-dark-10);
    border-radius: var(--radius-lg);
    padding: 32px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    text-align: left;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.ai-card-short:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

.ai-card-header {
    margin-bottom: 24px;
}

.ai-card-header h3 {
    font-size: 20px;
    font-family: var(--font-body);
    font-weight: 600;
    line-height: 1.2;
    color: var(--shade-dark-100);
    margin-bottom: 8px;
}

.ai-card-header p {
    font-size: 14px;
    font-family: var(--font-body);
    font-weight: 400;
    color: var(--shade-dark-50);
    line-height: 1.5;
}

.ai-card-image {
    flex: 1;
    overflow: hidden;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
}

.ai-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-sm);
}

.ai-card-image-short {
    height: 40px;
    overflow: hidden;
    border-radius: var(--radius-sm);
    flex: none;
    order: 1;
    align-self: stretch;
    flex-grow: 1;
    position: relative;
}

.ai-card-image-short img {
    width: 100%;
    height: 100%;
    max-width: none;
    object-fit: cover;
    object-position: left center;
    border-radius: var(--radius-sm);
}

/* Support Format Section */
.support-format {
    width: 100%;
    max-width: 100%;
    padding: 130px clamp(20px, calc((100vw - 1100px) / 2), 157.50px);
    text-align: center;
}

.support-format .section-badge {
    margin-bottom: 16px;
}

.support-format .section-title-center {
    margin-bottom: 16px;
    line-height: 1.2;
}

.support-format-subtitle {
    text-align: center;
    font-size: 16px;
    font-family: var(--font-body);
    font-weight: 400;
    color: var(--shade-dark-50);
    line-height: 1.2;
    margin-bottom: 48px;
}

.format-cards {
    display: flex;
    justify-content: center;
    gap: 0;
    width: 100%;
    max-width: 1100px;
    min-width: 0;
    margin: 0 auto;
}

.format-card {
    position: relative;
    width: 203px;
    height: 385px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s ease;
}

.format-card:hover {
    transform: translateY(-4px);
}

.format-frame {
    position: absolute;
    top: 0;
    left: 0;
    width: 203px;
    height: 385px;
    z-index: 0;
}

.format-image {
    position: relative;
    z-index: 1;
    width: 162px;
    height: 351px;
    border-radius: 16px;
    object-fit: cover;
}

/* --- Why Choose Us Section --- */
.why-us {
    width: 100%;
    max-width: 100%;
    padding: 80px 170px 80px;
    display: flex;
    justify-content: center;
    box-sizing: border-box;
}

.why-us-card {
    position: relative;
    width: 100%;
    max-width: 1100px;
    min-width: 0;
    height: 420px;
    margin: 0 auto;
    background: linear-gradient(360deg, var(--shade-dark-0) 0%, var(--shade-dark-10) 100%);
    border: 1px solid var(--shade-dark-10);
    border-radius: 20px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    box-sizing: border-box;
}

.why-us-bg {
    position: absolute;
    top: -18px;
    left: 1px;
    width: 1099px;
    max-width: calc(100% - 2px);
    height: 437px;
    z-index: 0;
    object-fit: fill;
}

.why-us-badge {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    width: 272px;
    min-width: 0;
    height: 38px;
    padding: 8px 12px;
    background: var(--shade-light-100);
    border: 0.75px solid var(--shade-dark-20);
    border-radius: 10px;
    margin-top: 120px;
    margin-bottom: 24px;
    box-sizing: border-box;
}

.why-us-badge span {
    font-size: 14px;
    font-family: var(--font-body);
    font-weight: 400;
    color: var(--shade-dark-100);
    margin-left: 12px;
    white-space: nowrap;
}

.why-us-title {
    position: relative;
    z-index: 1;
    width: 100%;
    font-size: 48px;
    font-family: var(--font-display);
    font-weight: 400;
    line-height: 1.2;
    text-align: center;
    color: var(--shade-dark-100);
    margin-bottom: 10px;
}

.why-us-desc {
    position: relative;
    z-index: 1;
    width: 100%;
    font-size: 14px;
    font-family: var(--font-body);
    font-weight: 400;
    color: var(--shade-dark-50);
    text-align: center;
    line-height: 1.5;
}

/* --- Footer --- */
.footer {
    width: 100%;
    max-width: 100%;
    margin: 32px auto 0;
    background: rgba(0, 0, 0, 0.06);
    padding: 80px 170px;
}

.footer-container {
    width: 100%;
    max-width: 1100px;
    min-width: 0;
    margin: 0 auto;
}

.footer-logo {
    display: inline-block;
    margin-bottom: 48px;
}

.footer-divider {
    width: 100%;
    height: 0;
    border-top: 1px solid var(--shade-dark-10);
    margin-bottom: 24px;
}

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

.footer-bottom span {
    font-size: 14px;
    font-family: var(--font-body);
    font-weight: 400;
    color: var(--shade-dark-40);
}

/* --- Responsive: Tablet (768px - 1024px) --- */
@media (max-width: 1024px) {
    .nav-container,
    .hero-content,
    .solutions,
    .ai-bigdata,
    .support-format,
    .why-us,
    .footer {
        padding-left: 40px;
        padding-right: 40px;
    }

    .solutions {
        padding: 60px 40px;
    }

    .ai-bigdata,
    .support-format,
    .why-us {
        padding-top: 60px;
        padding-bottom: 60px;
        padding-left: 40px;
        padding-right: 40px;
    }

    .footer {
        padding-top: 60px;
        padding-bottom: 60px;
    }

    .footer-container {
        text-align: left;
    }

    .footer-logo {
        margin-left: 0;
        margin-right: 0;
    }

    .clients {
        padding: 0 40px;
    }

    .clients-inner {
        width: 100%;
        min-width: 0;
        padding: 80px 0 80px;
    }

    .clients .section-badge {
        margin: 0 auto;
    }

    .logo-row-1 {
        flex-wrap: wrap;
        justify-content: center;
        gap: 24px;
    }

    .nav-container {
        width: 100%;
        max-width: 100%;
        min-width: 0;
        gap: 0;
        padding: 0 40px;
    }

    .hero-title {
        font-size: 56px;
    }

    .section-title-center {
        font-size: 36px;
    }

    .solutions-grid {
        flex-direction: row;
        flex-wrap: wrap;
        align-items: stretch;
        justify-content: center;
        gap: 10px;
        max-width: 100%;
    }

    .solution-card {
        width: calc(50% - 5px);
        max-width: 360px;
        height: 400px;
    }

    .solution-image {
        width: 100%;
        height: 200px;
    }

    .ai-grid {
        width: 100%;
    }

    .ai-row {
        flex-direction: column;
        height: auto !important;
    }

    .ai-row > .ai-card,
    .ai-row > .ai-stack {
        width: 100% !important;
        height: auto !important;
        min-height: 300px;
    }

    .ai-stack {
        flex-direction: column;
    }

    .ai-card-short {
        min-height: 180px;
        height: auto !important;
    }

    .format-cards {
        flex-wrap: wrap;
        justify-content: center;
        gap: 16px;
    }

    .why-us-card {
        width: 100%;
        height: auto;
        min-height: 340px;
        padding: 0 0 40px;
        align-items: center;
        text-align: center;
        border-radius: 16px;
    }

    .why-us-badge {
        margin-top: 60px;
        margin-bottom: 12px;
    }

    .why-us-title {
        font-size: 40px;
        line-height: 1.2;
        margin-bottom: 6px;
    }

    .why-us-desc {
        font-size: 13px;
    }

    .why-us-bg {
        width: 100%;
        max-width: 100%;
        height: 100%;
        top: 0;
        left: 0;
    }
}

/* --- Responsive: Mobile (815px breakpoint) --- */
@media (max-width: 815px) {
    :root {
        --nav-height: 64px;
    }

    .nav-container {
        width: 100%;
        max-width: 100%;
        min-width: 0;
        gap: 0;
        padding: 0 20px;
    }

    .nav-logo svg {
        width: 127px;
        height: 26px;
    }

    .nav-links {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        width: 100%;
        height: 0;
        background: var(--shade-light-100);
        flex-direction: column;
        gap: 0;
        overflow: hidden;
        transition: height 0.3s ease;
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.06);
    }

    .nav-links.active {
        height: calc(100vh - var(--nav-height));
        padding: 24px 0;
        gap: 16px;
    }

    .nav-link {
        font-size: 18px;
        padding: 12px 20px;
    }

    .nav-toggle {
        display: none;
    }

    .hero-content,
    .clients,
    .solutions,
    .ai-bigdata,
    .support-format,
    .why-us,
    .footer {
        padding-left: 20px;
        padding-right: 20px;
    }

    .solutions,
    .ai-bigdata,
    .support-format,
    .why-us {
        padding-top: 48px;
        padding-bottom: 48px;
    }

    .footer {
        padding-top: 40px;
        padding-bottom: 40px;
    }

    .hero {
        height: auto;
        padding-top: var(--nav-height);
        padding-bottom: 64px;
    }

    .hero-bg {
        top: 200px;
        height: 300px;
    }

    .hero-content {
        padding-top: 64px;
    }

    .hero-title {
        font-size: 36px;
        height: auto;
        margin-bottom: 24px;
    }

    .hero-description {
        font-size: 13px;
        text-align: center;
    }

    .hero-badge {
        width: fit-content;
        max-width: 100%;
        height: 34px;
        padding: 6px 10px;
        gap: 8px;
        margin-bottom: 32px;
    }

    .badge-icons {
        width: 42px;
        height: 22px;
    }

    .badge-icons img {
        width: 22px;
        height: 22px;
        top: 0;
    }

    .badge-icons img:nth-child(1) { left: 0; }
    .badge-icons img:nth-child(2) { left: 10px; }
    .badge-icons img:nth-child(3) { left: 20px; }

    .hero-badge span {
        font-size: 12px;
        margin-left: 12px;
    }

    .section-title-center {
        font-size: 28px;
    }

    .clients {
        padding: 0 20px;
    }

    .clients-inner {
        width: 100%;
        min-width: 0;
        padding: 60px 0 60px;
    }

    .clients .section-badge {
        margin: 0 auto;
    }

    .clients .section-title-center {
        font-size: 18px;
    }

    .client-logos {
        gap: 20px;
    }

    .logo-row-1 {
        flex-wrap: wrap;
        justify-content: center;
        gap: 16px;
    }

    .logo-row-1 img,
    .logo-row-2 img {
        height: 32px;
    }

    .solutions {
        padding: 48px 20px;
    }

    .solutions .section-badge {
        margin: 0 auto 24px;
    }

    .solutions .section-title-center {
        margin-bottom: 24px;
    }

    .solutions-grid {
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }

    .solution-card {
        width: 100%;
        max-width: 500px;
        height: auto;
        min-height: 380px;
        padding: 20px;
    }

    .solution-tag {
        margin-bottom: 16px;
    }

    .solution-info {
        margin-bottom: 16px;
    }

    .solution-info h3 {
        font-size: 18px;
    }

    .solution-info p {
        font-size: 13px;
    }

    .solution-image {
        width: 100%;
        height: 180px;
        border-radius: 8px;
    }

    .ai-bigdata {
        padding-top: 48px;
        padding-bottom: 48px;
    }

    .ai-card,
    .ai-card-short {
        padding: 20px;
    }

    .ai-card-header h3 {
        font-size: 18px;
    }

    .ai-card-header p {
        font-size: 13px;
    }

    .ai-card-short {
        height: auto !important;
        min-height: 180px;
    }

    .format-cards {
        flex-direction: column;
        align-items: center;
    }

    .support-format {
        padding-top: 48px;
        padding-bottom: 48px;
    }

    .format-card {
        width: 100%;
        max-width: 203px;
    }

    .why-us {
        padding-top: 48px;
        padding-bottom: 48px;
    }

    .why-us-card {
        padding: 0 0 32px;
        align-items: center;
        text-align: center;
        min-height: 0;
        border-radius: 12px;
    }

    .why-us-badge {
        margin-top: 32px;
        min-width: 0;
        width: auto;
        height: 32px;
        padding: 5px 10px;
        margin-bottom: 10px;
    }

    .why-us-badge span {
        font-size: 12px;
        margin-left: 12px;
    }

    .why-us-title {
        font-size: 28px;
        line-height: 1.2;
        margin-bottom: 6px;
    }

    .why-us-desc {
        font-size: 12px;
    }

    .why-us-bg {
        width: 100%;
        max-width: 100%;
        height: 100%;
        top: 0;
        left: 0;
    }

    .footer {
        padding: 32px 20px;
    }

    .footer-container {
        text-align: center;
    }

    .footer-logo {
        margin-left: auto;
        margin-right: auto;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }
}

/* --- Responsive: Small Mobile (375px and below) --- */
@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }

    .section-title-center {
        font-size: 24px;
    }

    .hero-badge {
        flex-wrap: wrap;
        width: 100%;
        justify-content: center;
    }

    .solutions {
        padding: 32px 16px;
    }

    .solutions .section-badge {
        margin: 0 auto 24px;
    }

    .solutions .section-title-center {
        font-size: 22px;
        margin-bottom: 24px;
    }

    .solutions-grid {
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }

    .solution-card {
        width: 100%;
        max-width: 360px;
        padding: 16px;
        min-height: 340px;
    }

    .solution-tag {
        height: 24px;
        padding: 3px 10px;
        font-size: 12px;
        margin-bottom: 12px;
    }

    .solution-info h3 {
        font-size: 16px;
        margin-bottom: 6px;
    }

    .solution-info p {
        font-size: 12px;
        line-height: 1.4;
    }

    .solution-info {
        margin-bottom: 12px;
    }

    .solution-image {
        width: 100%;
        height: 150px;
        border-radius: 6px;
    }

    .ai-card,
    .ai-card-short {
        padding: 16px;
    }

    .format-card {
        max-width: 180px;
    }

    .format-image {
        width: 144px;
        height: 312px;
    }

    .why-us-title {
        font-size: 22px;
        line-height: 1.2;
        margin-bottom: 4px;
    }

    .why-us-badge {
        margin-top: 24px;
        margin-bottom: 8px;
    }

    .why-us-badge span {
        font-size: 11px;
        margin-left: 10px;
    }

    .why-us-desc {
        font-size: 11px;
    }

    .why-us-card {
        padding: 0 0 24px;
    }
}

/* --- Accessibility: Reduced Motion --- */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}