:root {
    --bg: #f5f7f8;
    --surface: #ffffff;
    --ink: #17212b;
    --muted: #66727f;
    --line: #dce3e8;
    --primary: #0f766e;
    --primary-dark: #0b5f59;
    --accent: #c0792b;
    --accent-soft: #fff2df;
    --success: #157f4f;
    --error: #bd3030;
    --shadow: 0 18px 48px rgba(23, 33, 43, 0.09);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.6;
    letter-spacing: 0;
}

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

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

button,
input,
textarea {
    font: inherit;
}

.container {
    width: min(1160px, calc(100% - 40px));
    margin: 0 auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255, 255, 255, 0.95);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(14px);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 74px;
    gap: 24px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-weight: 800;
}

.brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 8px;
    background: var(--ink);
    color: #fff;
    font-weight: 900;
}

.brand-text {
    white-space: nowrap;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 0;
    margin: 0;
    list-style: none;
}

.nav-menu a {
    display: inline-flex;
    align-items: center;
    min-height: 40px;
    padding: 8px 12px;
    border-radius: 8px;
    color: var(--muted);
    font-weight: 700;
}

.nav-menu a:hover,
.nav-menu a:focus-visible {
    background: #edf3f2;
    color: var(--ink);
}

.nav-toggle {
    display: none;
    width: 44px;
    height: 44px;
    padding: 0;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #fff;
    cursor: pointer;
}

.nav-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    margin: 5px auto;
    background: var(--ink);
    transition: transform 0.2s ease, opacity 0.2s ease;
}

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

.nav-toggle.is-open span:nth-child(2) {
    opacity: 0;
}

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

.hero {
    position: relative;
    display: grid;
    align-items: center;
    min-height: calc(82vh - 74px);
    overflow: hidden;
    background-image: url("https://images.unsplash.com/photo-1556761175-b413da4baf72?auto=format&fit=crop&w=1800&q=82");
    background-position: center;
    background-size: cover;
    color: #fff;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: rgba(16, 26, 35, 0.72);
}

.hero-content {
    position: relative;
    z-index: 1;
    padding: 92px 0;
}

.section-kicker {
    margin: 0 0 12px;
    color: var(--primary);
    font-size: 0.78rem;
    font-weight: 900;
    letter-spacing: 0;
    text-transform: uppercase;
}

.hero .section-kicker,
.final-cta .section-kicker {
    color: #88d8ca;
}

.hero h1 {
    width: min(840px, 100%);
    margin: 0;
    font-size: clamp(2.55rem, 6vw, 5rem);
    line-height: 1;
    letter-spacing: 0;
}

.hero-subtitle {
    width: min(700px, 100%);
    margin: 22px 0 0;
    color: rgba(255, 255, 255, 0.84);
    font-size: clamp(1rem, 2vw, 1.22rem);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 32px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 12px 18px;
    border: 1px solid transparent;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 850;
    transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}

.button:hover,
.button:focus-visible {
    transform: translateY(-1px);
}

.button-primary {
    background: var(--primary);
    color: #fff;
}

.button-primary:hover,
.button-primary:focus-visible {
    background: var(--primary-dark);
}

.button-secondary {
    border-color: rgba(255, 255, 255, 0.64);
    color: #fff;
}

.button-secondary:hover,
.button-secondary:focus-visible {
    background: rgba(255, 255, 255, 0.12);
}

.section {
    padding: clamp(68px, 9vw, 112px) 0;
}

.section-heading {
    width: min(760px, 100%);
    margin-bottom: 34px;
}

.section-heading h2,
.benefit-copy h2,
.contact-copy h2,
.final-cta h2 {
    margin: 0;
    color: var(--ink);
    font-size: clamp(2rem, 4vw, 3.3rem);
    line-height: 1.08;
    letter-spacing: 0;
}

.section-heading p:not(.section-kicker),
.benefit-copy p,
.contact-copy p {
    color: var(--muted);
    font-size: 1.02rem;
}

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

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

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

.service-card,
.result-card,
.lead-form {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.service-card,
.result-card {
    padding: 24px;
}

.service-card h3,
.result-card h3 {
    margin: 18px 0 10px;
    font-size: 1.18rem;
    line-height: 1.2;
}

.service-card p,
.result-card p {
    margin: 0;
    color: var(--muted);
}

.card-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 8px;
    background: #e8f5f2;
    color: var(--primary);
    font-weight: 900;
}

.benefits {
    background: #fff;
}

.benefit-layout,
.contact-layout {
    display: grid;
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    gap: clamp(28px, 6vw, 70px);
    align-items: start;
}

.benefit-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.benefit-item {
    min-height: 150px;
    padding: 22px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--bg);
}

.benefit-item strong,
.benefit-item span {
    display: block;
}

.benefit-item strong {
    margin-bottom: 10px;
    font-size: 1.05rem;
}

.benefit-item span {
    color: var(--muted);
}

.cases {
    background: #eef3f3;
}

.result-card {
    border-top: 4px solid var(--accent);
}

.result-number {
    color: var(--accent);
    font-size: 2.4rem;
    font-weight: 900;
    line-height: 1;
}

.contact {
    background: #fff;
}

.contact-points {
    display: grid;
    gap: 10px;
    padding: 0;
    margin: 26px 0 0;
    color: var(--ink);
    list-style: none;
    font-weight: 800;
}

.contact-points li {
    position: relative;
    padding-left: 26px;
}

.contact-points li::before {
    content: "";
    position: absolute;
    top: 10px;
    left: 0;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--primary);
}

.lead-form {
    display: grid;
    gap: 16px;
    padding: clamp(22px, 4vw, 34px);
}

.form-field {
    display: grid;
    gap: 7px;
}

.form-field label {
    color: var(--ink);
    font-size: 0.92rem;
    font-weight: 800;
}

.form-field input,
.form-field textarea {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #fff;
    color: var(--ink);
}

.form-field input {
    min-height: 46px;
    padding: 10px 12px;
}

.form-field textarea {
    resize: vertical;
    min-height: 128px;
    padding: 12px;
}

.form-field input:focus,
.form-field textarea:focus {
    border-color: var(--primary);
    outline: 3px solid rgba(15, 118, 110, 0.14);
}

.form-field.has-error input,
.form-field.has-error textarea {
    border-color: var(--error);
}

.field-error {
    min-height: 18px;
    color: var(--error);
    font-size: 0.82rem;
    font-weight: 700;
}

.form-submit {
    width: 100%;
}

.form-status {
    min-height: 24px;
    margin: 0;
    color: var(--success);
    font-weight: 800;
}

.final-cta {
    padding: clamp(48px, 7vw, 84px) 0;
    background: var(--ink);
    color: #fff;
}

.final-cta-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.final-cta h2 {
    max-width: 800px;
    color: #fff;
}

.site-footer {
    background: #101820;
    color: #d8e0e6;
}

.footer-layout {
    display: grid;
    grid-template-columns: 1fr auto auto;
    gap: 34px;
    align-items: start;
    padding: 38px 0 24px;
}

.footer-brand .brand-mark {
    background: var(--primary);
}

.site-footer p {
    max-width: 380px;
    margin: 14px 0 0;
    color: #aebbc5;
}

.footer-links,
.social-links {
    display: flex;
    gap: 10px;
}

.footer-links {
    flex-wrap: wrap;
    max-width: 320px;
}

.footer-links a {
    padding: 6px 8px;
    color: #cbd5dc;
    font-weight: 700;
}

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    color: #fff;
    font-weight: 900;
}

.footer-bottom {
    padding: 18px 0 26px;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    color: #aebbc5;
}

@media (max-width: 980px) {
    .four-columns,
    .three-columns,
    .benefit-layout,
    .contact-layout {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .four-columns .service-card:nth-child(3),
    .four-columns .service-card:nth-child(4) {
        min-height: 0;
    }

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

@media (max-width: 760px) {
    .container {
        width: min(100% - 28px, 1160px);
    }

    .nav {
        min-height: 66px;
    }

    .brand-text {
        max-width: 190px;
        overflow: hidden;
        text-overflow: ellipsis;
    }

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

    .nav-menu {
        position: absolute;
        top: 66px;
        left: 14px;
        right: 14px;
        display: grid;
        gap: 4px;
        padding: 10px;
        border: 1px solid var(--line);
        border-radius: 8px;
        background: #fff;
        box-shadow: var(--shadow);
        transform: translateY(-12px);
        visibility: hidden;
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease;
    }

    .nav-menu.is-open {
        transform: translateY(0);
        visibility: visible;
        opacity: 1;
        pointer-events: auto;
    }

    .nav-menu a {
        width: 100%;
        justify-content: flex-start;
        min-height: 44px;
    }

    .hero {
        min-height: calc(78vh - 66px);
        background-position: 58% center;
    }

    .hero-content {
        padding: 74px 0;
    }

    .hero-actions,
    .final-cta-content {
        align-items: stretch;
        flex-direction: column;
    }

    .button {
        width: 100%;
    }

    .four-columns,
    .three-columns,
    .benefit-layout,
    .benefit-list,
    .contact-layout {
        grid-template-columns: 1fr;
    }

    .section {
        padding: 58px 0;
    }
}