:root {
    --bg: #030303;
    --panel: #0b0b0d;
    --panel-soft: #111114;
    --text: #ffffff;
    --muted: #a7a7ad;

    --red: #ff1f2d;
    --green: #43d35f;
    --purple: #c542ff;
    --blue: #238cff;
    --white-glow: rgba(255,255,255,0.45);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at 18% 18%, rgba(255, 31, 45, 0.16), transparent 28%),
        radial-gradient(circle at 86% 35%, rgba(197, 66, 255, 0.12), transparent 30%),
        radial-gradient(circle at 50% 86%, rgba(35, 140, 255, 0.09), transparent 34%),
        #030303;
}

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

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    backdrop-filter: blur(18px);
    background: rgba(3, 3, 3, 0.82);
    border-bottom: 1px solid rgba(255,255,255,0.08);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 5vw;
}

.brand {
    display: flex;
    align-items: center;
    gap: 14px;
}

.brand img {
    width: 56px;
    height: 56px;
    border-radius: 14px;
}

.brand-text {
    letter-spacing: 0.34em;
    font-weight: 800;
    color: white;
    font-size: 18px;
}

.brand-sub {
    letter-spacing: 0.38em;
    font-size: 11px;
    color: #9a9a9a;
    opacity: 1;
    margin-top: 4px;
}

.nav {
    display: flex;
    gap: 32px;
    align-items: center;
    color: #e8e8e8;
}

.nav a {
    opacity: 0.86;
}

.nav a:hover {
    color: var(--red);
    opacity: 1;
}

.hero {
    display: grid;
    grid-template-columns: 0.9fr 1.35fr;
    gap: 48px;
    align-items: center;
    padding: 64px 5vw 72px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.hero-copy {
    max-width: 520px;
}

.kuitar-logo {
    width: 138px;
    border-radius: 28px;
    box-shadow: 0 0 38px rgba(255, 31, 45, 0.24);
    margin-bottom: 24px;
}

.hero h1 {
    font-size: clamp(46px, 7vw, 86px);
    letter-spacing: 0.22em;
    margin: 0;
}

.red-line {
    width: 110px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--red), transparent);
    margin: 22px 0;
}

.hero h2 {
    color: var(--muted);
    font-weight: 400;
    letter-spacing: 0.08em;
    margin: 0 0 34px;
}

.hero p {
    color: #dddddf;
    font-size: 20px;
    line-height: 1.55;
}

.feature-dots {
    margin: 30px 0;
    color: #f0f0f0;
    line-height: 2;
}

.feature-dots span {
    color: var(--red);
    margin: 0 12px;
}

.cta-row {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 22px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--red), #9e0710);
    font-weight: 800;
    box-shadow: 0 0 28px rgba(255, 31, 45, 0.22);
}

.secondary {
    background: transparent;
    border: 1px solid rgba(255,255,255,0.25);
    box-shadow: none;
}

.hero-shot {
    position: relative;
    padding: 14px;
    border-radius: 24px;
    border: 1px solid rgba(255, 31, 45, 0.42);
    background: rgba(10, 10, 12, 0.72);
    box-shadow:
        0 0 55px rgba(255, 31, 45, 0.25),
        inset 0 0 35px rgba(255,255,255,0.03);
}

.hero-shot img,
.shot-card img {
    display: block;
    width: 100%;
    border-radius: 16px;
}

.section {
    padding: 62px 5vw;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.section-title {
    text-align: center;
    font-size: 34px;
    margin: 0 0 14px;
}

.section-line {
    width: 56px;
    height: 2px;
    background: var(--red);
    margin: 0 auto 48px;
}

.pill-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 62px;
}

.pill {
    min-height: 210px;
    border-radius: 24px;
    background: rgba(12, 12, 15, 0.86);
    border: 1px solid rgba(255,255,255,0.15);
    padding: 32px 24px;
    text-align: center;
}

.pill-icon {
    font-size: 44px;
    margin-bottom: 20px;
}

.pill h3 {
    font-size: 28px;
    margin: 0 0 14px;
}

.pill p {
    color: var(--muted);
    line-height: 1.5;
    margin: 0;
}

.practice {
    border-color: rgba(67, 211, 95, 0.72);
    box-shadow: 0 0 34px rgba(67, 211, 95, 0.15);
}

.practice h3,
.practice .pill-icon {
    color: var(--green);
}

.theory {
    border-color: rgba(197, 66, 255, 0.72);
    box-shadow: 0 0 34px rgba(197, 66, 255, 0.15);
}

.theory h3,
.theory .pill-icon {
    color: var(--purple);
}

.tools {
    border-color: rgba(35, 140, 255, 0.72);
    box-shadow: 0 0 34px rgba(35, 140, 255, 0.15);
}

.tools h3,
.tools .pill-icon {
    color: var(--blue);
}

.free {
    border-color: rgba(255,255,255,0.62);
    box-shadow: 0 0 34px rgba(255,255,255,0.08);
}

.screenshot-section {
    display: grid;
    grid-template-columns: 230px 1fr;
    gap: 34px;
    align-items: center;
    margin: 38px 0;
}

.screenshot-section.reverse {
    grid-template-columns: 1fr 230px;
}

.screenshot-text h3 {
    font-size: 34px;
    margin: 0 0 18px;
}

.screenshot-text p {
    color: var(--muted);
    line-height: 1.6;
    font-size: 18px;
}

.shot-card {
    padding: 10px;
    border-radius: 22px;
    background: rgba(8, 8, 10, 0.82);
    border: 1px solid rgba(255,255,255,0.12);
}

.glow-green {
    border-color: rgba(67, 211, 95, 0.65);
    box-shadow: 0 0 34px rgba(67, 211, 95, 0.14);
}

.glow-purple {
    border-color: rgba(197, 66, 255, 0.65);
    box-shadow: 0 0 34px rgba(197, 66, 255, 0.14);
}

.glow-blue {
    border-color: rgba(35, 140, 255, 0.65);
    box-shadow: 0 0 34px rgba(35, 140, 255, 0.14);
}

.footer {
    padding: 48px 5vw;
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
    gap: 32px;
    color: var(--muted);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 18px;
}

.footer-logo img {
    width: 58px;
    border-radius: 14px;
}

.footer strong {
    color: white;
}

.footer a {
    display: block;
    color: var(--muted);
    margin: 10px 0;
}

.footer a:hover {
    color: white;
}

.legal-page {
    max-width: 900px;
    margin: 70px auto;
    padding: 24px;
    line-height: 1.7;
}

.legal-page p,
.legal-page li {
    color: var(--muted);
    font-size: 17px;
}

.back-button {
    display: inline-block;
    margin-top: 30px;
    background: var(--red);
    padding: 13px 24px;
    border-radius: 10px;
    color: white;
}

@media (max-width: 980px) {
    .hero {
        grid-template-columns: 1fr;
    }

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

    .screenshot-section,
    .screenshot-section.reverse {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 640px) {
    .site-header {
        flex-direction: column;
        gap: 20px;
    }

    .nav {
        flex-wrap: wrap;
        justify-content: center;
        gap: 18px;
    }

    .pill-grid,
    .footer {
        grid-template-columns: 1fr;
    }

    .hero h1 {
        letter-spacing: 0.14em;
    }
}