:root {
    --bg: linear-gradient(180deg, rgba(248, 250, 252, 0.92) 0%, rgba(239, 249, 252, 0.95) 45%, rgba(255, 255, 255, 1) 100%);
    --surface: #ffffff;
    --accent-primary: #f96002;
    --accent-secondary: #51c5da;
    --accent-neutral: #95989b;
    --accent-bright: #2171ec;
    --accent-primary-strong: #d84f00;
    --accent-secondary-strong: #3aa8bd;
    --accent-soft: rgba(81, 197, 218, 0.15);
    --text: #0f172a;
    --muted: #51607a;
    --border: rgba(15, 23, 42, 0.08);
    --radius-lg: 24px;
    --radius-md: 16px;
    --radius-sm: 10px;
    --max-width: 1120px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Poppins", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

a:hover {
    color: var(--accent-primary);
}

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

.skip-link {
    position: absolute;
    left: -999px;
    top: 1rem;
    background: var(--accent-primary);
    color: #fff;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    transition: left 0.2s ease;
    z-index: 1000;
}

.skip-link:focus {
    left: 1rem;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 900;
    backdrop-filter: blur(12px);
    background-color: rgba(255, 255, 255, 0.92);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem clamp(1rem, 4vw, 3rem);
    transform: translateY(0);
    transition: transform 0.3s ease;
}

.site-header.is-hidden {
    transform: translateY(calc(-100% - 1px));
}

.site-header .brand {
    display: flex;
    align-items: center;
    gap: clamp(0.75rem, 2vw, 1.5rem);
    flex-wrap: wrap;
}

.site-header .brand a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.site-header .brand img {
    height: clamp(34px, 4vw, 60px);
    object-fit: contain;
    filter: drop-shadow(0 4px 12px rgba(15, 23, 42, 0.05));
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.site-nav ul {
    display: flex;
    list-style: none;
    gap: clamp(1rem, 3vw, 2.5rem);
    margin: 0;
    padding: 0;
    font-weight: 500;
}

.site-nav a {
    padding: 0.5rem 0;
    position: relative;
}

.site-nav a::after {
    content: "";
    position: absolute;
    inset: auto 0 -0.3rem;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    opacity: 0;
    transform: scaleX(0.4);
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
    opacity: 1;
    transform: scaleX(1);
}

.nav-toggle {
    background: none;
    border: none;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 0;
    cursor: pointer;
}

.nav-toggle:hover {
    background-color: var(--accent-soft);
}

.nav-toggle-bar,
.nav-toggle-bar::before,
.nav-toggle-bar::after {
    content: "";
    display: block;
    width: 20px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    position: relative;
    transition: transform 0.2s ease;
}

.nav-toggle-bar::before,
.nav-toggle-bar::after {
    position: absolute;
    left: 0;
}

.nav-toggle-bar::before {
    top: -6px;
}

.nav-toggle-bar::after {
    top: 6px;
}

main {
    padding: clamp(3rem, 5vw, 5rem) clamp(1.5rem, 5vw, 4rem);
}

.hero {
    position: relative;
    max-width: min(1120px, 100%);
    margin: 0 auto clamp(4rem, 6vw, 7rem);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 30px 80px -50px rgba(15, 23, 42, 0.5);
    isolation: isolate;
    min-height: clamp(420px, 60vh, 620px);
}

.hero-slider {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

.hero-slide {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1.2s ease;
}

.hero-slide::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(7, 17, 35, 0.65) 0%, rgba(7, 17, 35, 0.35) 45%, rgba(7, 17, 35, 0.15) 100%);
    pointer-events: none;
}

.hero-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-slide.is-active {
    opacity: 1;
    z-index: 1;
}

.hero-overlay {
    position: relative;
    z-index: 2;
    color: #fff;
    padding: clamp(2rem, 4vw, 4rem);
    max-width: clamp(320px, 50vw, 520px);
    display: flex;
    flex-direction: column;
    gap: clamp(1rem, 2vw, 1.5rem);
}

.hero-eyebrow {
    margin: 0;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(81, 197, 218, 0.9);
}

.hero-overlay h1 {
    margin: 0;
    font-size: clamp(2.6rem, 5vw, 4.2rem);
    line-height: 1.05;
    font-weight: 700;
}

.hero-overlay h1 span {
    color: var(--accent-secondary);
}

.section {
    max-width: var(--max-width);
    margin: 0 auto clamp(4rem, 6vw, 6rem);
}

.section-header h2 {
    margin: 0 0 1.5rem;
    font-size: clamp(2rem, 3vw, 2.6rem);
    font-weight: 600;
    position: relative;
}

.section-header h2::after {
    content: "";
    position: absolute;
    bottom: -0.75rem;
    left: 0;
    width: clamp(60px, 10vw, 120px);
    height: 4px;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
}

.about-grid {
    display: grid;
    gap: clamp(1.5rem, 3vw, 2.5rem);
    grid-template-columns: repeat(2, minmax(0, 1fr));
    background: var(--surface);
    padding: clamp(2rem, 4vw, 3rem);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(81, 197, 218, 0.14);
    box-shadow: 0 12px 40px -28px rgba(15, 23, 42, 0.4);
}

.about-grid article h3 {
    margin: 0 0 1rem;
    font-size: 1.35rem;
    font-weight: 600;
}

.about-grid p {
    margin: 0 0 1rem;
    color: var(--muted);
}

.process {
    text-align: left;
}

.process-grid {
    display: grid;
    gap: clamp(1.5rem, 4vw, 2.5rem);
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.process-item {
    background: var(--surface);
    border-radius: var(--radius-md);
    border: 1px solid rgba(149, 152, 155, 0.18);
    box-shadow: 0 15px 40px -32px rgba(15, 23, 42, 0.45);
    overflow: hidden;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.process-item[open] {
    border-color: rgba(81, 197, 218, 0.35);
    box-shadow: 0 22px 46px -32px rgba(15, 23, 42, 0.4);
}

.process-item summary {
    display: flex;
    align-items: flex-start;
    gap: clamp(1rem, 2.5vw, 1.5rem);
    cursor: pointer;
    padding: clamp(1.25rem, 3vw, 1.8rem) clamp(1.25rem, 3vw, 2rem);
    list-style: none;
}

.process-item summary::-webkit-details-marker {
    display: none;
}

.process-item summary:focus-visible {
    outline: 2px solid var(--accent-secondary);
    outline-offset: 4px;
}

.process-icon {
    flex-shrink: 0;
    width: clamp(54px, 8vw, 64px);
    height: clamp(54px, 8vw, 64px);
    border-radius: 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-soft);
    color: var(--accent-primary);
}

.process-icon svg {
    width: 60%;
    height: 60%;
}

.process-meta {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.process-step {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.8rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: inherit;
}

.process-meta h3 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text);
}

.process-toggle {
    margin-left: auto;
    margin-top: 0.35rem;
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(149, 152, 155, 0.12);
    color: var(--accent-neutral);
    transition: background 0.2s ease, color 0.2s ease;
}

.process-toggle::before {
    content: "+";
    font-size: 1.15rem;
    line-height: 1;
}

.process-item[open] .process-toggle {
    background: rgba(249, 96, 2, 0.18);
    color: var(--accent-primary);
}

.process-item[open] .process-toggle::before {
    content: "−";
}

.process-content {
    padding: 0 clamp(1.25rem, 3vw, 2rem) clamp(1.35rem, 3vw, 2rem);
    display: grid;
    gap: 1rem;
    color: var(--muted);
    border-top: 1px solid rgba(149, 152, 155, 0.18);
    background: rgba(15, 23, 42, 0.015);
}

.process-content p {
    margin: 0;
}

.process-content ul {
    margin: 0;
    padding-left: 1.2rem;
}

.process-item[data-step="1"] .process-icon {
    background: rgba(249, 96, 2, 0.12);
    color: var(--accent-primary);
}

.process-item[data-step="1"] .process-step {
    color: var(--accent-primary);
}

.process-item[data-step="2"] .process-icon {
    background: rgba(81, 197, 218, 0.15);
    color: var(--accent-secondary);
}

.process-item[data-step="2"] .process-step {
    color: var(--accent-secondary);
}

.process-item[data-step="3"] .process-icon {
    background: rgba(33, 113, 236, 0.15);
    color: var(--accent-bright);
}

.process-item[data-step="3"] .process-step {
    color: var(--accent-bright);
}

.process-item[data-step="4"] .process-icon {
    background: rgba(149, 152, 155, 0.18);
    color: var(--accent-neutral);
}

.process-item[data-step="4"] .process-step {
    color: var(--accent-neutral);
}

.platform-grid {
    display: grid;
    gap: clamp(1.5rem, 3vw, 2.5rem);
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.platform-grid article {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: clamp(2rem, 4vw, 3rem);
    border: 1px solid rgba(81, 197, 218, 0.1);
    box-shadow: 0 12px 36px -28px rgba(15, 23, 42, 0.4);
    display: grid;
    gap: 1.5rem;
}

.platform-media img {
    width: min(100%, 360px);
    margin: 0 auto;
}

.platform-content h3 {
    margin: 0 0 0.75rem;
    font-size: 1.35rem;
    font-weight: 600;
}

.platform-content p {
    margin: 0 0 1.25rem;
    color: var(--muted);
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    padding: 0.85rem 1.6rem;
    border-radius: 999px;
    background: var(--accent-primary);
    color: #fff;
    transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.button:hover,
.button:focus-visible {
    background: var(--accent-primary-strong);
    transform: translateY(-1px);
    box-shadow: 0 16px 28px -26px rgba(249, 96, 2, 0.6);
    color: #fff;
}

.button.ghost {
    background: var(--accent-secondary);
    color: #0f172a;
    border: none;
}

.button.ghost:hover,
.button.ghost:focus-visible {
    background: var(--accent-secondary-strong);
    color: #fff;
}

.site-footer {
    padding: clamp(2.75rem, 5vw, 4rem) clamp(1.5rem, 5vw, 4rem);
    background: #f7f9fb;
    color: var(--text);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    text-align: center;
    border-top: 1px solid rgba(15, 23, 42, 0.08);
}

.footer-logos {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(1rem, 3vw, 2.5rem);
    flex-wrap: wrap;
}

.footer-logos a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.footer-logos img {
    height: clamp(42px, 6vw, 72px);
    object-fit: contain;
}

.footer-tagline {
    margin: 0;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--accent-neutral);
}

.footer-copy {
    margin: 0;
    color: var(--muted);
    font-size: 0.95rem;
}

@media (max-width: 1024px) {
    .platform-grid {
        grid-template-columns: repeat(1, minmax(0, 1fr));
    }

    .hero-gallery {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

}

@media (max-width: 768px) {
    .site-header {
        gap: 1rem;
    }

    .nav-toggle {
        display: inline-flex;
    }

    .site-nav ul {
        position: absolute;
        top: 100%;
        right: clamp(1rem, 5vw, 3rem);
        background: var(--surface);
        border-radius: var(--radius-md);
        box-shadow: 0 18px 45px -32px rgba(15, 23, 42, 0.35);
        flex-direction: column;
        padding: 1rem 1.25rem;
        gap: 0.5rem;
        min-width: 220px;
        opacity: 0;
        pointer-events: none;
        transform: translateY(-10px);
        transition: opacity 0.2s ease, transform 0.2s ease;
    }

    .site-nav ul.is-open {
        opacity: 1;
        pointer-events: auto;
        transform: translateY(0);
    }

    .hero {
        min-height: clamp(360px, 70vh, 520px);
        border-radius: var(--radius-md);
    }

    .hero-overlay {
        align-items: center;
        text-align: center;
        margin-inline: auto;
    }

    .process-item summary {
        flex-direction: column;
    }

    .process-toggle {
        align-self: flex-end;
        margin-top: 1rem;
    }
}

@media (max-width: 640px) {
    main {
        padding: clamp(2.5rem, 8vw, 3rem) clamp(1rem, 6vw, 1.5rem);
    }

    .section-header h2 {
        text-align: center;
    }

    .process-grid {
        grid-template-columns: 1fr;
    }

    .platform-grid article {
        text-align: center;
    }

    .platform-content p,
    .about-grid p {
        text-align: left;
    }
}