:root {
    --color-bg-dark: #050a14;
    --color-bg-elevated-1: #070f1f;
    --color-bg-elevated-2: #060b18;
    --color-bg-elevated-3: rgba(26, 58, 104, 0.08);
    --color-card-surface-1: rgba(11, 18, 34, 0.9);
    --color-card-surface-2: rgba(8, 14, 27, 0.9);
    --color-card-deep-1: rgba(8, 14, 28, 0.95);
    --color-card-deep-2: rgba(6, 11, 22, 0.95);
    --color-line: rgba(43, 78, 138, 0.36);
    --color-text: #e9eef9;
    --color-text-muted: #9aaccc;
    --color-shadow: rgba(46, 201, 255, 0.3);
    --color-accent-1: #00E1FF;
    --color-accent-2: #2f84ff;
    --color-success: #33d4a5;
    --shadow-accent: 0 12px 34px rgba(37, 152, 255, 0.28);
    --radius-md: 12px;
    --radius-lg: 18px;
    --max-width: 1160px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Inter", Arial, sans-serif;
    color: var(--color-text);
    background: linear-gradient(180deg, var(--color-bg-dark), var(--color-bg-elevated-1) 100%);
}

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

html {
    scroll-behavior: smooth;
}

.container {
    width: min(100% - 2rem, var(--max-width));
    margin-inline: auto;
}

.section {
    padding: 4rem 1.5rem;
}

.section--elevated {
    background:
        radial-gradient(680px 320px at 50% 0%, var(--color-bg-elevated-3), transparent 70%),
        linear-gradient(180deg, var(--color-bg-elevated-1) 0%, var(--color-bg-elevated-2) 100%);
}

.section--dark {
    background-color: var(--color-bg-dark);
}

.center {
    text-align: center;
}

.narrow {
    max-width: 880px;
}

.title-xl,
.title-lg {
    margin: 0 auto 1.8rem;
    line-height: 1.08;
    font-weight: 800;
    letter-spacing: -0.03em;
    font-family: "Space Grotesk", "Inter", Arial, sans-serif;
}

.title-lg {
    font-size: clamp(1.6rem, 4vw, 3rem);
}

.title-xl {
    padding: 3rem 0;
    font-size: clamp(1.2rem, 5.5vw, 4rem);
}

.accent {
    background: linear-gradient(90deg, var(--color-accent-1), var(--color-accent-2));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.lead {
    margin: 0 auto;
    max-width: 930px;
    line-height: 1.5;
    font-size: clamp(.9rem, 1.8vw, 1.3rem);
    font-weight: 200;
}

.top-lead {
    font-size: clamp(1rem, 1.8vw, 1.5rem);
    font-weight: 400;
}

.muted {
    color: var(--color-text-muted);
    line-height: 1.67;
    font-size: clamp(.8rem, 1.2vw, 1rem);
}

.section-subtitle {
    font-weight: 400;
}

.max-text {
    font-weight: 200;
}

.section-subtitle,
.max-text {
    font-size: clamp(.8rem, 2vw, 1.1rem);
    line-height: 1.4;
    padding: .5rem 0 1.4rem;
}

.actions {
    margin-top: 2rem;
    padding: 1.5rem 0;
    display: flex;
    justify-content: center;
    gap: 0.9rem;
    flex-wrap: wrap;
}

.topbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 20;
    background: rgba(8, 13, 25, 0.38);
    backdrop-filter: blur(18px) saturate(140%);
    -webkit-backdrop-filter: blur(18px) saturate(140%);
}

.nav {
    position: relative;
    min-height: 78px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.nav-toggle {
    display: none;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 190px;
    padding: 0.7rem 1rem;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 700;
    transition: all 0.3s ease;
    font-size: clamp(.7rem, 2vw, .8rem);
}

.btn:hover {
    color: var(--color-text-muted);
    transform: translateY(-1px);
    box-shadow: 0 5px 10px var(--color-text-muted);
    cursor: pointer;
}

.btn-primary {
    color: #001023;
    background: linear-gradient(90deg, var(--color-accent-1), var(--color-accent-2));
    box-shadow: var(--shadow-accent);
}

.btn-primary:hover {
    color: var(--color-text);
    filter: brightness(1.03);
    box-shadow:
        0 10px 30px rgba(40, 150, 255, 0.3),
        inset 0 0 16px rgba(255, 255, 255, 0.08);
}

.btn-dark {
    background: linear-gradient(180deg, #17243f, #0f1a30);
    border-color: #2a3d64;
}

.btn-sm {
    min-width: auto;
    padding: 0.7rem 1rem;
    font-size: .8rem;
    text-align: center;
}

.nav-toggle-btn {
    display: none;
    width: 42px;
    height: 42px;
    border: 1px solid rgba(71, 109, 176, 0.45);
    border-radius: 10px;
    background: rgba(9, 19, 40, 0.62);
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.nav-toggle-btn span {
    width: 18px;
    height: 2px;
    border-radius: 999px;
    background: #dce7ff;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.brand {
    font-size: 1.5rem;
    font-weight: 800;
}

.brand span {
    color: var(--color-accent-2);
}

.nav-list {
    margin: 0;
    padding: 0;
    list-style: none;
    display: flex;
    gap: 1.3rem;
    color: #d4def2;
}

.nav-list li {
    transition: color 0.3s ease;
}

.nav-list li:hover {
    color: var(--color-accent-1);
}

.site-nav {
    margin-left: auto;
}

.hero {
    padding: 6rem 0 4rem;
    background:
        linear-gradient(180deg, rgba(4, 9, 20, 0.6) 0%, rgba(4, 9, 20, 0.9) 70%, rgba(4, 9, 20, 0.96) 100%),
        radial-gradient(520px 220px at 50% 36%, rgba(24, 178, 215, 0.2), transparent 72%),
        url("./images/hero.jpg");
    background-position: center top, center center, center top;
    background-size: auto, auto, cover;
    background-repeat: no-repeat;
}

.check-grid-subscription,
.check-grid-hero {
    margin: 2rem auto 0;
    padding: 0 0 1.2rem;
    list-style: none;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
    text-align: left;
    font-weight: 400;
    font-size: clamp(.8rem, 2vw, 1rem);
    color: var(--color-text-muted);
}

.check-grid-hero {
    max-width: 580px;
}

.check-grid-subscription {
    max-width: 850px;
}

.strong {
    font-weight: 600;
}

.bullets {
    display: flex;
    justify-content: start;
}

.icon {
    padding: 0 .5rem;
    color: var(--color-success);
}

.arrow {
    padding: 0 .8rem;
    color: var(--color-accent-1);
}

.hero-highlights {
    padding: 1.5rem 0;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.8rem;
}

.hero-highlights span {
    padding-top: 1.2rem;
    color: #3cbefd;
    font-weight: 700;
    position: relative;
    font-size: clamp(.7rem, 1.5vw, 2.5rem);
}

.hero-highlights span:not(:last-child)::after {
    content: "";
    position: absolute;
    right: -0.42rem;
    top: 50%;
    width: 1px;
    height: 24px;
    transform: translateY(-50%);
    background: linear-gradient(180deg, rgba(36, 113, 207, 0.08), rgba(42, 195, 255, 0.5), rgba(36, 113, 207, 0.08));
}

.big-stat {
    margin: 1.1rem 0 0;
    line-height: 1;
    font-size: clamp(4.4rem, 14vw, 9.2rem);
    font-weight: 800;
    letter-spacing: -0.04em;
    text-shadow: 8px 8px 74px var(--color-shadow);
}

.header {
    width: 65vw;
    margin: 0 auto;
}

.subtitle {
    padding: 0.6rem 0 1.5rem;
    color: #d7e1f3;
    font-size: clamp(.9rem, 2.1vw, 1.3rem);
}

.stat-grid {
    margin-top: 1.9rem;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 2.4rem;
    position: relative;
}

.stat-grid::after {
    content: "";
    position: absolute;
    left: 50%;
    top: 50%;
    width: 1px;
    height: 64px;
    transform: translate(-50%, -50%);
    background: linear-gradient(180deg, rgba(38, 96, 176, 0.05), rgba(43, 201, 255, 0.42), rgba(38, 96, 176, 0.05));
}

.stat-number {
    margin: 0 0 0.25rem;
    font-size: clamp(2.2rem, 5.1vw, 3.7rem);
    font-weight: 800;
    color: #2ec9ff;
}

.cards {
    margin-top: 2.2rem;
    display: grid;
    gap: 1rem;
}

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

.card {
    border: 1px solid var(--color-line);
    border-radius: var(--radius-lg);
    padding: 1.3rem;
    text-align: center;
    transition: all 0.3s ease;
}

#benefits .card:hover,
#about .card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px var(--color-text-muted);
}

.card--surface {
    background: linear-gradient(180deg, var(--color-card-surface-1), var(--color-card-surface-2));
}

.card--deep {
    background: linear-gradient(180deg, var(--color-card-deep-1), var(--color-card-deep-2));
}

.card--featured {
    border-color: rgba(43, 210, 255, 0.68);
    box-shadow: 0 0 0 2px rgba(45, 213, 255, 0.14), 0 18px 45px rgba(16, 66, 146, 0.28);
}

.card h3 {
    margin: 0 auto 0.8rem;
    font-size: clamp(.9rem, 2.2vw, 1rem);
    font-family: "Space Grotesk", "Inter", Arial, sans-serif;
    padding: .2rem 0 0;
}

.card p {
    margin: 0;
    color: var(--color-text-muted);
    line-height: 1.4;
    font-weight: 200;
}

.card-icon {
    width: 50px;
    padding: 0.3rem;
    margin: 0 auto;
    color: var(--color-accent-1);
}

.card-icon i {
    font-size: 1.1rem;
    line-height: 1;
}

.section-kicker {
    margin: 0 0 1.1rem;
    text-transform: uppercase;
    letter-spacing: 0.17em;
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--color-accent-1);
}


.steps-grid {
    margin-top: 2.4rem;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1.4rem;
}

.step-card {
    text-align: center;
    padding: 0.5rem 0.35rem;
    transition: all 0.6s ease;
    position: relative;
}

.step-card:hover {
    scale: 1.04;
}

.step-card:hover h3 {
    text-shadow: 0 0 8px rgba(47, 132, 255, 0.48);
}

.step-number {
    color: #3cc2ff;
    font-family: "Space Grotesk", "Inter", Arial, sans-serif;
    font-weight: 700;
    font-size: 4rem;
    letter-spacing: 0.1em;
    position: absolute;
    opacity: .2;
    top: -1.5rem;
    left: 50%;
    transform: translateX(-50%);
}

.step-card h3 {
    margin: 0 0 0.62rem;
    font-family: "Space Grotesk", "Inter", Arial, sans-serif;
    font-size: 1.4rem;
    line-height: 1.15;
}

.step-card p:not(:first-child) {
    margin: 0;
    color: #95a7ca;
    line-height: 1.72;
}

.steps-note {
    margin-top: 2.2rem;
    font-size: 1.04rem;
}

.list {
    margin: 0 auto;
    padding: 0;
    max-width: 640px;
    list-style: none;
    text-align: left;
    display: grid;
}

.compact {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    height: 40vh;
    padding: 2rem 0;
}

.compact li {
    padding: 0.4rem 0.9rem;
    font-size: .9rem;
}

.pricing-card {
    position: relative;
    display: flex;
    flex-direction: column;
    transition: all 0.3s ease;
    margin-bottom: 3rem;
}

.pricing-card:hover {
    scale: 1.02;
}

.pricing-card>h3 {
    min-height: 2.1rem;
}

.pricing-card>.muted {
    min-height: 4.5rem;
}

.pricing-card .price {
    min-height: 3.2rem;
}

.pricing-card .list .compact {
    flex: 1;
}

.pricing-card .btn {
    margin: 1rem 0;
    ;
}

.list li {
    padding: 0 .9rem;
}

.price span {
    font-size: 2rem;
    font-weight: 800;
    font-family: "Space Grotesk", "Inter", Arial, sans-serif;
    text-align: left;
    padding: 0 .3rem 2rem;
}

.badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.3rem 0.86rem;
    border-radius: 999px;
    font-size: 0.77rem;
    font-weight: 700;
    color: #04214a;
    background: linear-gradient(90deg, var(--color-accent-1), var(--color-accent-2));
}

.cards-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 4.5rem;
}

.addon-box {
    margin-top: 1.6rem;
}

.addon-box h3 {
    margin: 0 0 0.9rem;
}

.addon-row {
    margin-top: 0.6rem;
    padding: 0.75rem 0.9rem;
    border-radius: 10px;
    border: 1px solid var(--color-line);
    background: linear-gradient(180deg, rgba(12, 20, 36, 0.93), rgba(9, 15, 29, 0.94));
    color: var(--color-text-muted);
    display: flex;
    justify-content: space-between;
    gap: 1rem;
}

.addon-row span {
    font-size: clamp(.8rem, 1.8vw, 1.2rem);
}

.form {
    margin-top: 2rem;
    display: grid;
    gap: 0.9rem;
    max-width: 600px;
    margin-inline: auto;
    padding: 1.35rem;
}

.form label {
    display: grid;
    text-align: left;
    gap: 0.4rem;
    color: var(--color-text);
    font-size: 0.95rem;
}

.form input,
.form textarea {
    width: 100%;
    border-radius: 10px;
    border: 1px solid var(--color-line);
    background: var(--color-card-surface-2);
    color: var(--color-text);
    font: inherit;
    padding: 0.8rem 0.95rem;
}

.form input:focus,
.form textarea:focus {
    outline: none;
    border-color: rgba(43, 141, 207, 0.58);
    box-shadow: 0 0 0 2px rgba(43, 141, 207, 0.1);
}

#contact .card--surface {
    background-color: var(--color-shadow);
    border-color: var(--color-line);
}

.faq {
    margin-top: 2.75rem;
    max-width: 600px;
    margin-inline: auto;
    padding: 1.5rem 1.35rem 1.25rem;
    text-align: left;
}

.faq .section-kicker {
    margin-bottom: 0.55rem;
}

.faq-heading {
    margin: 0 0 1.25rem;
    font-family: "Space Grotesk", "Inter", Arial, sans-serif;
    font-size: clamp(1.4rem, 3vw, 2.5rem);
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

.faq-item {
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
    background: rgba(7, 13, 26, 0.55);
    overflow: hidden;
}

.faq-item+.faq-item {
    margin-top: 0.65rem;
}

.faq-item summary {
    list-style: none;
    cursor: pointer;
    padding: 0.95rem 2.75rem 0.95rem 1rem;
    font-weight: 400;
    font-size: clamp(.8rem, 1.8vw, 1rem);
    line-height: 1.45;
    color: #e4eaf5;
    position: relative;
    transition: background-color 0.25s ease, color 0.25s ease;
}

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

.faq-item summary::after {
    content: "";
    position: absolute;
    right: 1.1rem;
    top: 50%;
    width: 0.45rem;
    height: 0.45rem;
    border-right: 2px solid var(--color-accent-1);
    border-bottom: 2px solid var(--color-accent-2);
    transform: translateY(-55%) rotate(45deg);
    transition: transform 0.3s ease, border-color 0.25s ease;
}

.faq-item[open] summary::after {
    transform: translateY(-20%) rotate(225deg);
}

.faq-item summary:hover {
    background: var(--color-line);
    color: var(--color-text);
}

.faq-item summary:focus-visible {
    outline: 2px solid rgba(43, 141, 207, 0.45);
    outline-offset: 2px;
}

.faq-item[open] summary {
    border-bottom: 1px solid rgba(35, 54, 88, 0.35);
    background: rgba(12, 22, 42, 0.45);
}

.faq-answer {
    padding: 0 1rem 1rem;
}

.faq-answer p {
    margin: 0;
    padding-top: 0.65rem;
    color: var(--color-text-muted);
    font-size: clamp(.8rem, 1.5vw, 1rem);
    line-height: 1.65;
}

.footer-cta {
    padding: 5rem 0;
    background: url("./images/footer.jpg") no-repeat center center;
    position: relative;
}

.footer-cta h2,
.footer-cta p,
.footer-cta .btn {
    z-index: 2;
    position: relative;
}

.footer-cta .overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-bg-elevated-1);
    opacity: .7;
    z-index: 1;
}

.footer-grid {
  margin-top: 2.3rem;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 1.2rem;
  text-align: left;
  padding: 2rem 1.5rem;
}

.footer-grid h4 {
  margin: 0 0 0.7rem;
}

.footer-grid a,
.footer-grid p {
  display: block;
  margin-top: 0.38rem;
  color: var(--color-text-muted);
  font-size: clamp(.6rem, 1.5vw, .8rem);
}

.footer-grid a:hover {
  color: var(--color-accent-1);
}

.footer-down {
  border-top: 1px solid var(--color-line);
  padding: 2rem;           
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.75rem;
}

@media (max-width: 1080px) {
    .cards-4 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .cards-3 {
        gap: 1.4rem;
    }

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

}

@media (max-width: 820px) {
    .site-nav {
        margin-left: 0;
    }

    .nav {
        min-height: 68px;
    }

    .site-nav {
        position: absolute;
        top: calc(100% + 10px);
        right: 1rem;
        border: 1px solid var(--color-line);
        border-radius: 14px;
        background: linear-gradient(180deg, var(--color-card-surface-1)), var(--color-card-surface-2);
        box-shadow: var(--shadow-accent);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-8px);
        transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease;
    }

    .nav-list {
        gap: 0;
        font-size: 1rem;
        flex-direction: column;
        padding: 0.45rem 0.9rem;
        width: 30vw;
        right: 0;
    }

    .nav-list a {
        display: block;
        padding: 0.75rem 0.7rem;
        border-radius: 10px;
    }

    .nav-list a:hover {
        background: rgba(47, 132, 255, 0.14);
    }

    .nav-toggle-btn {
        display: inline-flex;
        margin-left: auto;
    }

    .nav-toggle:checked+.nav-toggle-btn+.site-nav {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    .nav-toggle:checked+.nav-toggle-btn span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

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

    .nav-toggle:checked+.nav-toggle-btn span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    .cards-3 {
        grid-template-columns: 1fr;
        width: 60vw;
        margin: 0 auto;
    }

    .addon-row {
        display: grid;
        grid-template-columns: 3fr 1fr;
        align-items: center;

    }
}

@media (max-width: 550px) {
    .nav {
        min-height: 64px;
    }

    .btn-sm {
        padding: 0.7rem .5rem;
    }

    .header {
        width: 75vw;
        margin: 0 auto 1.3rem;
    }

    .check-grid-hero,
    .check-grid-subscription {
        gap: .8rem;
    }

    .stat-grid,
    .steps-grid {
        gap: 1.5rem;
    }

    .hero-highlights {
        gap: 0.55rem;
    }

    .brand {
        font-size: 1.35rem;
    }

    .cards-3 {
        width: 80vw;
    }

    .section {
        padding: 2rem .4rem;
    }

    .addon-row,
    .footer-grid,
    .cards-4,
    .check-grid-hero,
    .check-grid-subscription,
    .stat-grid,
    .steps-grid {
        grid-template-columns: 1fr;
    }
}