:root {
    --primary: #32ffd5;
    --black: #111111;
    --dark: #1C1C1C;
    --mid: #2B2B2B;
    --light: #F5F5F5;
    --white: #ffffff;
    --shadow: 0 14px 34px rgba(17, 17, 17, 0.10);
    --radius: 18px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    color: var(--black);
    background: #fbfbfb;
    line-height: 1.65;
}

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

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

header, section, footer { width: 100%; }

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255, 255, 255, 0.96);
    border-bottom: 1px solid rgba(17, 17, 17, 0.08);
    box-shadow: 0 10px 28px rgba(17, 17, 17, 0.06);
}

.header-inner {
    display: none;
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    min-height: 78px;
}

.logo img {
    width: 128px;
    max-height: 54px;
    object-fit: contain;
}

.main-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 28px;
    font-weight: 700;
    color: var(--mid);
}

.main-nav a:hover { color: #07816b; }

.header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.mobile-top {
    display: grid;
    grid-template-columns: 44px 1fr 44px;
    align-items: center;
    gap: 8px;
    padding: 12px 16px 6px;
}

.mobile-logo {
    display: flex;
    justify-content: center;
}

.mobile-logo img {
    width: 118px;
    max-height: 50px;
    object-fit: contain;
}

.mobile-spacer { width: 44px; height: 44px; }

.mobile-menu-toggle {
    width: 44px;
    height: 44px;
    border: 0;
    border-radius: 14px;
    background: var(--black);
    color: #fff;
    font-size: 24px;
    line-height: 1;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.mobile-actions {
    display: flex;
    justify-content: center;
    gap: 10px;
    padding: 6px 16px 12px;
}

.mobile-nav {
    display: none;
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 12px 16px 16px;
    background: #ffffff;
    border-top: 1px solid rgba(17, 17, 17, 0.08);
    position: relative;
    z-index: 60;
}

.mobile-nav.is-open {
    display: grid;
}

.mobile-nav a {
    padding: 12px 14px;
    border-radius: 14px;
    background: var(--light);
    font-weight: 700;
}

.container {
    width: min(1120px, calc(100% - 32px));
    margin: 0 auto;
}

section {
    padding: 46px 0;
}

.hero, .banner {
    background:
        radial-gradient(circle at 20% 20%, rgba(50, 255, 213, 0.28), transparent 34%),
        linear-gradient(135deg, #071413 0%, #113a35 55%, #0f1717 100%);
    color: #ffffff;
    padding: 54px 0;
}

.hero-wrap {
    display: grid;
    gap: 28px;
    align-items: center;
}

.hero h1, .banner h1 {
    font-size: clamp(32px, 8vw, 62px);
    line-height: 1.08;
    margin: 0 0 18px;
    letter-spacing: -0.04em;
}

.hero p, .banner p {
    color: rgba(255, 255, 255, 0.86);
    font-size: 17px;
    margin: 0 0 20px;
}

.hero-card {
    background: rgba(255,255,255,0.10);
    border: 1px solid rgba(255,255,255,0.16);
    border-radius: 28px;
    padding: 22px;
    box-shadow: var(--shadow);
    backdrop-filter: blur(10px);
}

.hero-card img {
    margin: 0 auto;
    max-height: 360px;
    object-fit: contain;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 18px;
}

.tag {
    background: rgba(50, 255, 213, 0.16);
    color: #e9fffb;
    border: 1px solid rgba(50, 255, 213, 0.34);
    padding: 8px 12px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 700;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 22px;
    border-radius: 999px;
    background: linear-gradient(135deg, #10c4aa, var(--primary));
    color: #08211d;
    font-weight: 800;
    border: 1px solid rgba(255,255,255,0.18);
    box-shadow: 0 10px 22px rgba(50, 255, 213, 0.20);
    cursor: pointer;
}

.btn:hover { transform: translateY(-1px); }

.btn-small {
    min-height: 40px;
    padding: 0 16px;
    font-size: 14px;
}

.btn-alt {
    background: linear-gradient(135deg, #111111, #2B2B2B);
    color: #ffffff;
}

.grid {
    display: grid;
    gap: 18px;
}

.grid-2, .grid-3 {
    display: grid;
    gap: 18px;
}

.card {
    background: #ffffff;
    border-radius: var(--radius);
    padding: 22px;
    box-shadow: var(--shadow);
    border: 1px solid rgba(17, 17, 17, 0.06);
}

.card h2, .card h3 {
    margin-top: 0;
    line-height: 1.25;
}

.card h2 {
    font-size: clamp(24px, 5vw, 36px);
}

.card h3 {
    font-size: 21px;
}

.notice {
    background: linear-gradient(135deg, rgba(50,255,213,0.18), rgba(245,245,245,1));
    border-left: 5px solid var(--primary);
    border-radius: 16px;
    padding: 18px;
    margin: 20px 0;
    color: var(--dark);
}

.faq {
    display: grid;
    gap: 14px;
}

.faq details {
    background: #ffffff;
    border: 1px solid rgba(17, 17, 17, 0.08);
    border-radius: 16px;
    padding: 16px 18px;
    box-shadow: 0 10px 22px rgba(17, 17, 17, 0.05);
}

.faq summary {
    font-weight: 800;
    cursor: pointer;
}

.page-hero {
    background: linear-gradient(135deg, #101818 0%, #173f39 100%);
    color: #ffffff;
    padding: 44px 0;
}

.page-hero h1 {
    font-size: clamp(30px, 7vw, 52px);
    margin: 0 0 12px;
}

.page-hero p { color: rgba(255,255,255,0.84); margin: 0; }

.inline-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 18px;
}

.inline-links a {
    border-radius: 999px;
    padding: 9px 13px;
    background: var(--light);
    font-weight: 700;
}

.footer {
    background: #101818;
    color: #e8eeee;
    padding-top: 42px;
}

.footer-grid {
    display: grid;
    gap: 24px;
}

.footer a {
    display: block;
    color: #e8eeee;
    margin: 8px 0;
}

.footer-logo img {
    width: 126px;
    margin-bottom: 12px;
}

.footer-bottom {
    margin-top: 28px;
    padding: 16px;
    text-align: center;
    border-top: 1px solid rgba(255,255,255,0.10);
    color: rgba(255,255,255,0.70);
}

@media (min-width: 768px) {
    .mobile-top, .mobile-actions, .mobile-nav {
        display: none;
    }

    .header-inner {
        display: flex;
    }

    .hero-wrap {
        grid-template-columns: 1.08fr 0.92fr;
    }

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

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

    .footer-grid {
        grid-template-columns: 1.4fr 0.8fr 1.2fr;
    }
}

@media (min-width: 1024px) {
    section {
        padding: 68px 0;
    }

    .header-inner {
        width: min(1220px, calc(100% - 56px));
    }

    .logo img {
        width: 146px;
    }

    .main-nav {
        gap: 34px;
    }

    .hero, .banner {
        padding: 78px 0;
    }

    .card {
        padding: 28px;
    }
}