:root {
    color-scheme: dark;

    --background: #0c0b09;
    --background-light: #171511;
    --card: #1b1915;
    --card-light: #24211b;

    --text: #eee3d0;
    --muted: #b9ae9b;

    --gold: #d89b3f;
    --gold-light: #f1bd69;
    --cyan: #079fa9;
    --cyan-dark: #006c74;
    --green: #719256;
    --red: #b66c58;

    --border: rgba(226, 190, 126, 0.19);
    --container: 1160px;
    --radius: 24px;
    --shadow: 0 24px 70px rgba(0, 0, 0, 0.35);
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    min-width: 320px;
    scroll-behavior: smooth;
    background: var(--background);
}

body {
    min-width: 320px;
    min-height: 100vh;
    margin: 0;

    color: var(--text);
    background:
        radial-gradient(
            circle at 15% 10%,
            rgba(209, 151, 62, 0.08),
            transparent 28rem
        ),
        radial-gradient(
            circle at 90% 40%,
            rgba(0, 151, 162, 0.06),
            transparent 30rem
        ),
        var(--background);

    font-family:
        Inter,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        Arial,
        sans-serif;

    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

body.menu-open {
    overflow: hidden;
}

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

button,
input,
textarea {
    font: inherit;
}

button,
a {
    -webkit-tap-highlight-color: transparent;
}

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

.container {
    width: min(100% - 40px, var(--container));
    margin-inline: auto;
}

.section {
    position: relative;
    padding: 110px 0;
    scroll-margin-top: 80px;
}

.header {
    position: sticky;
    z-index: 100;
    top: 0;

    border-bottom: 1px solid rgba(226, 190, 126, 0.1);
    background: rgba(12, 11, 9, 0.82);
    backdrop-filter: blur(18px);
}

.header__container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 30px;

    min-height: 74px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    flex: 0 0 auto;
}

.brand__name {
    color: var(--gold-light);
    font-size: 15px;
    font-weight: 800;
    letter-spacing: 0.08em;
}

.brand__symbol {
    position: relative;

    display: flex;
    flex-wrap: wrap;
    gap: 3px;

    width: 25px;
    height: 25px;

    transform: rotate(45deg);
}

.brand__symbol i {
    display: block;
    width: 10px;
    height: 10px;

    border: 2px solid var(--gold);
}

.navigation {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 30px;

    color: var(--muted);
    font-size: 14px;
    font-weight: 600;
}

.navigation a {
    transition: color 160ms ease;
}

.navigation a:hover {
    color: var(--text);
}

.navigation__button {
    padding: 11px 18px;

    color: var(--text) !important;
    border: 1px solid var(--gold);
    border-radius: 999px;
}

.menu-button {
    display: none;

    width: 44px;
    height: 44px;
    padding: 10px;

    background: transparent;
    border: 0;
    cursor: pointer;
}

.menu-button span {
    display: block;
    width: 100%;
    height: 2px;
    margin: 5px 0;

    background: var(--text);
    border-radius: 10px;

    transition:
        transform 200ms ease,
        opacity 200ms ease;
}

.eyebrow {
    margin: 0 0 16px;

    color: var(--gold-light);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.13em;
    text-transform: uppercase;
}

h1,
h2,
h3,
p {
    margin-top: 0;
}

h1,
h2 {
    max-width: 850px;
    margin-bottom: 24px;

    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.035em;
}

h1 {
    font-size: clamp(46px, 7vw, 86px);
}

h2 {
    font-size: clamp(34px, 5vw, 58px);
}

h1 strong,
h2 strong {
    display: block;
    color: var(--gold);
}

h3 {
    margin-bottom: 10px;

    font-size: 22px;
    line-height: 1.2;
}

.hero {
    display: flex;
    align-items: center;
    min-height: calc(100vh - 74px);
    padding-top: 70px;
}

.hero__container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 70px;
}

.hero__content {
    flex: 1 1 58%;
    min-width: 0;
}

.hero__description {
    max-width: 620px;
    margin-bottom: 34px;

    color: var(--muted);
    font-size: clamp(18px, 2vw, 22px);
}

.hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

.button {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    gap: 18px;

    min-height: 54px;
    padding: 14px 24px;

    font-weight: 750;
    line-height: 1.2;

    border: 1px solid transparent;
    border-radius: 12px;

    cursor: pointer;

    transition:
        transform 160ms ease,
        background-color 160ms ease,
        border-color 160ms ease;
}

.button:hover {
    transform: translateY(-2px);
}

.button--primary {
    color: #fff;
    background: linear-gradient(180deg, #0baab5, #007984);
    box-shadow: 0 12px 28px rgba(0, 133, 144, 0.25);
}

.button--outline {
    color: var(--gold-light);
    border-color: var(--gold);
    background: rgba(16, 15, 12, 0.6);
}

.hero__facts {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;

    padding: 0;
    margin: 42px 0 0;
    list-style: none;
}

.hero__facts li {
    display: flex;
    flex-direction: column;
    gap: 3px;

    padding-left: 15px;
    border-left: 2px solid var(--cyan);
}

.hero__facts strong {
    font-size: 14px;
}

.hero__facts span {
    color: var(--muted);
    font-size: 12px;
}

.hero__visual {
    position: relative;

    display: flex;
    justify-content: center;

    flex: 0 1 390px;
}

.phone-glow {
    position: absolute;
    inset: 18% 0;

    background: rgba(0, 167, 178, 0.2);
    border-radius: 50%;
    filter: blur(70px);
}

.hero__phone {
    position: relative;
    z-index: 1;

    width: min(100%, 302px);
    border-radius: 38px;

    filter: drop-shadow(0 30px 28px rgba(0, 0, 0, 0.55));
    transform: rotate(-3deg);
}

.section-heading {
    max-width: 850px;
    margin-bottom: 55px;
}

.section-heading > p:last-child {
    max-width: 680px;
    color: var(--muted);
    font-size: 18px;
}

.section-heading--center {
    margin-inline: auto;
    text-align: center;
}

.section-heading--center h2 {
    margin-inline: auto;
}

.comparison {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 24px;
}

.comparison-card {
    position: relative;

    display: flex;
    flex-direction: column;

    flex: 1 1 0;
    max-width: 510px;
    padding: 24px;

    background:
        linear-gradient(
            145deg,
            rgba(255, 255, 255, 0.04),
            transparent
        ),
        var(--card);

    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.comparison-card--after {
    border-color: rgba(0, 167, 178, 0.4);
}

.comparison-card__label {
    position: absolute;
    z-index: 2;
    top: 16px;
    left: 16px;

    padding: 7px 15px;

    font-size: 13px;
    font-weight: 800;

    background: #544122;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 8px;
}

.comparison-card--after .comparison-card__label {
    background: var(--cyan-dark);
}

.comparison-card__image {
    display: flex;
    justify-content: center;
    align-items: center;

    min-height: 270px;
    margin-bottom: 24px;
    overflow: hidden;

    background: #11110f;
    border-radius: 16px;
}

.comparison-card__image img {
    width: 100%;
}

.check-list {
    display: flex;
    flex-direction: column;
    gap: 8px;

    padding: 0;
    margin: 8px 0 0;
    list-style: none;

    color: var(--muted);
}

.check-list li::before {
    content: "✓";

    display: inline-flex;
    justify-content: center;
    align-items: center;

    width: 21px;
    height: 21px;
    margin-right: 9px;

    color: #fff;
    background: var(--cyan-dark);
    border-radius: 50%;

    font-size: 12px;
    font-weight: 800;
}

.check-list--negative li::before {
    content: "×";
    background: #714337;
}

.comparison__arrow {
    display: flex;
    justify-content: center;
    align-items: center;

    flex: 0 0 54px;
    width: 54px;
    height: 54px;

    color: var(--gold-light);
    border: 1px solid var(--gold);
    border-radius: 50%;

    font-size: 26px;
}

.advantages {
    background: rgba(255, 255, 255, 0.018);
}

.advantages__list {
    display: flex;
    align-items: stretch;
    gap: 20px;
}

.advantage {
    display: flex;
    flex-direction: column;
    gap: 24px;

    flex: 1 1 0;
    padding: 28px;

    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.advantage__icon {
    width: 112px;
    height: 112px;
    overflow: hidden;

    border-radius: 18px;
}

.advantage__icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.advantage p {
    margin-bottom: 0;
    color: var(--muted);
}

.process__container {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 80px;
}

.process__intro {
    position: sticky;
    top: 110px;

    flex: 1 1 48%;
}

.process__intro > p:not(.eyebrow) {
    max-width: 560px;
    color: var(--muted);
    font-size: 18px;
}

.text-link {
    display: inline-flex;
    align-items: center;
    gap: 12px;

    margin-top: 14px;

    color: var(--gold-light);
    font-weight: 700;
}

.steps {
    position: relative;

    display: flex;
    flex-direction: column;
    gap: 20px;

    flex: 1 1 45%;
    padding: 0;
    margin: 0;

    list-style: none;
}

.steps::before {
    content: "";

    position: absolute;
    top: 42px;
    bottom: 42px;
    left: 25px;

    width: 1px;
    background: linear-gradient(
        var(--cyan),
        var(--gold),
        var(--green)
    );
}

.step {
    position: relative;

    display: flex;
    align-items: flex-start;
    gap: 22px;

    min-height: 150px;
    padding: 26px;

    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.step__number {
    position: relative;
    z-index: 1;

    display: flex;
    justify-content: center;
    align-items: center;

    flex: 0 0 52px;
    width: 52px;
    height: 52px;

    color: #fff;
    background: linear-gradient(145deg, #11aeba, #006b73);
    border-radius: 50%;

    font-size: 20px;
    font-weight: 800;
}

.step__content p {
    margin-bottom: 0;
    color: var(--muted);
}

.examples {
    background: rgba(255, 255, 255, 0.018);
}

.examples__list {
    display: flex;
    align-items: stretch;
    gap: 20px;
}

.example {
    display: flex;
    flex-direction: column;

    flex: 1 1 0;
    min-width: 0;
    padding: 24px;

    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.example--blue {
    background: linear-gradient(160deg, #073b40, #071d20);
}

.example--brown {
    background: linear-gradient(160deg, #463219, #21170d);
}

.example--green {
    background: linear-gradient(160deg, #3e542b, #1c2515);
}

.example__type {
    min-height: 40px;
    margin-bottom: 22px;

    color: rgba(255, 255, 255, 0.7);
    font-size: 13px;
}

.example ul {
    display: flex;
    flex-direction: column;
    gap: 8px;

    padding: 0;
    margin: 12px 0 22px;
    list-style: none;
}

.example li {
    display: flex;
    justify-content: space-between;
    gap: 20px;

    padding: 11px 13px;

    background: rgba(0, 0, 0, 0.25);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 8px;
}

.example li span {
    color: rgba(255, 255, 255, 0.7);
}

.example p {
    margin-top: auto;
    margin-bottom: 0;
    color: rgba(255, 255, 255, 0.7);
}

.contact__box {
    position: relative;

    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 45px;

    padding: clamp(30px, 6vw, 70px);
    overflow: hidden;

    background:
        radial-gradient(
            circle at 10% 20%,
            rgba(214, 154, 63, 0.18),
            transparent 25rem
        ),
        var(--card);

    border: 1px solid rgba(216, 155, 63, 0.35);
    border-radius: 32px;
    box-shadow: var(--shadow);
}

.contact__emblem {
    flex: 0 1 190px;
}

.contact__emblem img {
    width: 100%;
    border-radius: 50%;
}

.contact__content {
    flex: 1 1 340px;
}

.contact__content h2 {
    font-size: clamp(34px, 4vw, 54px);
}

.contact__content p:last-child {
    max-width: 540px;
    margin-bottom: 0;

    color: var(--muted);
    font-size: 18px;
}

.contact-form {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;

    flex: 1 1 100%;
    padding-top: 25px;

    border-top: 1px solid var(--border);
}

.contact-form label {
    display: flex;
    flex-direction: column;
    gap: 7px;

    flex: 1 1 240px;
}

.contact-form label > span {
    color: var(--muted);
    font-size: 13px;
    font-weight: 700;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 15px 16px;

    color: var(--text);
    background: rgba(0, 0, 0, 0.28);
    border: 1px solid var(--border);
    border-radius: 10px;
    outline: none;

    transition: border-color 160ms ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
    border-color: var(--cyan);
}

.contact-form textarea {
    resize: vertical;
}

.contact-form__message {
    flex-basis: 100% !important;
}

.contact-form .button {
    margin-top: 5px;
}

.contact-form__status {
    display: flex;
    align-items: center;

    margin: 5px 0 0;
    color: var(--gold-light);
}

.footer {
    border-top: 1px solid var(--border);
}

.footer__container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 30px;

    min-height: 120px;

    color: var(--muted);
    font-size: 13px;
}

.footer p {
    margin: 0;
}

.reveal {
    opacity: 0;
    transform: translateY(24px);

    transition:
        opacity 650ms ease,
        transform 650ms ease;
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 900px) {
    .section {
        padding: 80px 0;
    }

    .hero__container,
    .process__container {
        gap: 45px;
    }

    .advantages__list,
    .examples__list {
        flex-wrap: wrap;
    }

    .advantage,
    .example {
        flex-basis: calc(50% - 10px);
    }

    .process__intro {
        position: static;
    }

    .contact__emblem {
        flex-basis: 130px;
    }
}

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

    .menu-button {
        display: block;
    }

    .menu-button.is-active span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

    .menu-button.is-active span:nth-child(2) {
        opacity: 0;
    }

    .menu-button.is-active span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    .navigation {
        position: fixed;
        inset: 74px 0 auto;

        display: flex;
        flex-direction: column;
        align-items: stretch;
        gap: 0;

        padding: 12px 20px 24px;

        background: rgba(12, 11, 9, 0.98);
        border-bottom: 1px solid var(--border);

        opacity: 0;
        visibility: hidden;
        transform: translateY(-12px);

        transition:
            opacity 180ms ease,
            visibility 180ms ease,
            transform 180ms ease;
    }

    .navigation.is-open {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    .navigation a {
        padding: 15px 5px;
        border-bottom: 1px solid var(--border);
    }

    .navigation__button {
        margin-top: 12px;
        text-align: center;
        border-bottom: 1px solid var(--gold) !important;
    }

    .hero {
        min-height: auto;
        padding-top: 55px;
    }

    .hero__container {
        flex-direction: column;
    }

    .hero__content {
        width: 100%;
    }

    .hero__visual {
        flex-basis: auto;
        width: 100%;
    }

    .hero__phone {
        width: min(78%, 302px);
    }

    .comparison {
        flex-direction: column;
    }

    .comparison-card {
        width: 100%;
    }

    .comparison__arrow {
        transform: rotate(90deg);
    }

    .advantages__list,
    .examples__list,
    .process__container {
        flex-direction: column;
    }

    .advantage,
    .example {
        width: 100%;
    }

    .advantage {
        flex-direction: row;
    }

    .advantage__icon {
        flex: 0 0 90px;
        width: 90px;
        height: 90px;
    }

    .process__intro,
    .steps {
        width: 100%;
    }

    .contact__box {
        flex-direction: column;
        align-items: stretch;
    }

    .contact__emblem {
        width: 130px;
        flex-basis: auto;
    }

    .footer__container {
        flex-direction: column;
        align-items: flex-start;
        justify-content: center;
        padding-top: 30px;
        padding-bottom: 30px;
    }
}

@media (max-width: 480px) {
    .section {
        padding: 65px 0;
    }

    h1 {
        font-size: 43px;
    }

    h2 {
        font-size: 34px;
    }

    .hero__actions,
    .hero__actions .button {
        width: 100%;
    }

    .hero__facts {
        flex-direction: column;
        gap: 17px;
    }

    .advantage {
        flex-direction: column;
    }

    .step {
        gap: 15px;
        padding: 20px;
    }

    .step__number {
        flex-basis: 43px;
        width: 43px;
        height: 43px;
    }

    .steps::before {
        left: 41px;
    }

    .comparison-card__image {
        min-height: 210px;
    }

    .contact__box {
        padding: 25px 18px;
        border-radius: 22px;
    }

    .contact-form .button {
        width: 100%;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        transition-duration: 1ms !important;
        animation-duration: 1ms !important;
    }

    .reveal {
        opacity: 1;
        transform: none;
    }
}