:root {
    --bg-dark: #07090C;
    --bg-card: #0f172a;
    --cyan-primary: #4FF7FF;
    --cyan-dim: #22d3ee;
    --text-main: #e2e8f0;
    --text-muted: #94a3b8;
    --accent-green: #a7f3d0;
    --font-family: 'Inter', sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: var(--font-family);
    line-height: 1.6;
    overflow-x: hidden;
    font-weight: 300;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.main-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(7, 9, 12, 0.95);
    backdrop-filter: blur(10px);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: 1px;
}

.logo span {
    color: var(--cyan-primary);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 40px;
}

.nav-links a {
    color: var(--text-main);
    text-decoration: none;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: var(--cyan-primary);
}

.cyan-rail {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--cyan-primary), transparent);
    width: 100%;
}

.hero {
    padding: 140px 0 100px;
    min-height: 80vh;
    display: flex;
    align-items: center;
}

.hero-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 460px;
    gap: 70px;
    align-items: center;
}

.hero-photo,
.feature-image {
    min-height: 520px;
    background-image: linear-gradient(180deg, rgba(7, 9, 12, 0.08), rgba(7, 9, 12, 0.68)), url("hero-joints.jpg");
    background-size: cover;
    background-position: center;
    border: 1px solid rgba(79, 247, 255, 0.22);
    box-shadow: 0 0 55px rgba(79, 247, 255, 0.16);
}

.hero-photo {
    border-radius: 8px;
    clip-path: polygon(8% 0, 100% 0, 92% 100%, 0 100%);
}

.tech-marker {
    display: inline-block;
    color: var(--cyan-dim);
    font-size: 0.75rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 20px;
    border-left: 2px solid var(--cyan-primary);
    padding-left: 10px;
}

h1 {
    font-size: 4rem;
    font-weight: 300;
    margin-bottom: 30px;
    line-height: 1.1;
    color: #fff;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-muted);
    max-width: 600px;
    margin-bottom: 40px;
}

.btn-primary {
    display: inline-block;
    background: var(--cyan-primary);
    color: var(--bg-dark);
    padding: 18px 36px;
    text-decoration: none;
    font-weight: 600;
    border-radius: 2px;
    transition: all 0.3s ease;
    box-shadow: 0 0 15px rgba(79, 247, 255, 0.3);
}

.btn-primary:hover {
    box-shadow: 0 0 30px rgba(79, 247, 255, 0.6);
    transform: translateY(-2px);
}

.btn-secondary {
    display: inline-block;
    border: 1px solid var(--cyan-dim);
    color: var(--cyan-dim);
    padding: 18px 36px;
    text-decoration: none;
    margin-left: 20px;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: rgba(34, 211, 238, 0.1);
}

.rail-divider {
    height: 1px;
    background: rgba(79, 247, 255, 0.1);
    margin: 60px 0;
}

.photo-feature {
    padding: 110px 0;
    background: linear-gradient(180deg, rgba(15, 23, 42, 0.12), rgba(15, 23, 42, 0.35));
}

.feature-grid {
    display: grid;
    grid-template-columns: 0.95fr 1.05fr;
    gap: 70px;
    align-items: center;
}

.feature-image {
    min-height: 480px;
    background-image: linear-gradient(180deg, rgba(7, 9, 12, 0.05), rgba(7, 9, 12, 0.58)), url("routine-joints.jpg");
    border-radius: 8px;
}

.feature-copy h2,
.process-section h2 {
    font-size: 2.8rem;
    font-weight: 300;
    line-height: 1.15;
    margin-bottom: 25px;
}

.feature-copy p {
    color: var(--text-muted);
    font-size: 1.12rem;
    margin-bottom: 35px;
}

.metric-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.metric-row div,
.process-card {
    background: rgba(15, 23, 42, 0.62);
    border: 1px solid rgba(79, 247, 255, 0.16);
    padding: 24px;
}

.metric-row strong {
    display: block;
    color: var(--cyan-primary);
    font-size: 1.45rem;
    margin-bottom: 6px;
}

.metric-row span {
    color: var(--text-muted);
    font-size: 0.88rem;
}

.section-title {
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 2.5rem;
    font-weight: 300;
}

.grid-benefits {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.benefit-card {
    background: rgba(15, 23, 42, 0.5);
    padding: 40px;
    border-left: 1px solid rgba(79, 247, 255, 0.2);
    transition: all 0.3s ease;
}

.benefit-card:hover {
    background: rgba(15, 23, 42, 0.8);
    border-left-color: var(--cyan-primary);
}

.icon-line {
    width: 30px;
    height: 2px;
    background: var(--cyan-primary);
    margin-bottom: 25px;
}

.benefit-card h3 {
    margin-bottom: 15px;
    font-weight: 400;
}

.process-section {
    padding: 110px 0;
}

.process-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.process-card {
    min-height: 230px;
    transition: all 0.3s ease;
}

.process-card:hover {
    border-color: var(--cyan-primary);
    transform: translateY(-6px);
}

.process-card span {
    color: var(--cyan-primary);
    font-size: 0.8rem;
    letter-spacing: 3px;
}

.process-card h3 {
    margin: 25px 0 14px;
}

.process-card p {
    color: var(--text-muted);
}

.detail-section {
    padding: 110px 0;
    background: rgba(15, 23, 42, 0.24);
}

.detail-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 26px;
}

.detail-card {
    background: linear-gradient(180deg, rgba(15, 23, 42, 0.82), rgba(7, 9, 12, 0.88));
    border: 1px solid rgba(79, 247, 255, 0.18);
    padding: 34px;
    min-height: 240px;
}

.detail-card h3 {
    color: #fff;
    font-weight: 400;
    margin-bottom: 16px;
}

.detail-card p {
    color: var(--text-muted);
}

.faq-section {
    padding: 110px 0;
}

.faq-layout {
    display: grid;
    grid-template-columns: 0.82fr 1.18fr;
    gap: 70px;
    align-items: start;
}

.faq-layout h2 {
    font-size: 2.6rem;
    font-weight: 300;
    line-height: 1.15;
    margin-bottom: 22px;
}

.faq-layout > div:first-child p {
    color: var(--text-muted);
    font-size: 1.08rem;
}

.faq-list {
    display: grid;
    gap: 18px;
}

.faq-item {
    border-left: 2px solid var(--cyan-primary);
    background: rgba(15, 23, 42, 0.58);
    padding: 24px 28px;
}

.faq-item h3 {
    margin-bottom: 10px;
    font-weight: 400;
}

.faq-item p {
    color: var(--text-muted);
}

.contact-section {
    padding: 100px 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
}

.contact-details {
    list-style: none;
    margin-top: 30px;
}

.contact-details li {
    margin-bottom: 15px;
    color: var(--text-muted);
}

.main-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group input {
    width: 100%;
    background: transparent;
    border: none;
    border-bottom: 1px solid rgba(226, 232, 240, 0.2);
    padding: 15px 0;
    color: #fff;
    font-family: inherit;
    outline: none;
    transition: border-color 0.3s ease;
}

.form-group input:focus {
    border-bottom-color: var(--cyan-primary);
}

.btn-submit {
    background: var(--cyan-primary);
    color: var(--bg-dark);
    border: none;
    padding: 20px;
    font-weight: 600;
    cursor: pointer;
    margin-top: 20px;
    transition: all 0.3s ease;
}

.btn-submit:hover {
    box-shadow: 0 0 25px rgba(79, 247, 255, 0.5);
}

.footer {
    padding: 60px 0 30px;
    background: #040507;
}

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

.footer-links {
    display: flex;
    gap: 30px;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.85rem;
}

.footer-bottom {
    margin-top: 30px;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.8rem;
}

@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    .nav-links { display: none; }
    .hero-layout, .feature-grid, .grid-benefits, .contact-grid, .process-grid, .metric-row, .detail-grid, .faq-layout { grid-template-columns: 1fr; }
    .hero-photo, .feature-image { min-height: 340px; clip-path: none; }
    .hero-btns { display: flex; flex-direction: column; gap: 15px; }
    .btn-secondary { margin-left: 0; text-align: center; }
}