:root {
    --black: #0a0a0a;
    --dark: #131313;
    --dark-2: #1c1a17;
    --gray: #8a8680;
    --white: #f5f3ef;
    --gold: #c9a961;
    --gold-light: #e4cf9a;
    --border: rgba(201, 169, 97, 0.18);

    --font-heading: sans-serif;
    --font-body: sans-serif;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--black);
    color: var(--white);
    font-family: 'Manrope', sans-serif;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

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

ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.container {
    width: 100%;
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 24px;
}

.icon {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: 999px;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 15px;
    cursor: pointer;
    border: 1px solid transparent;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease;
    white-space: nowrap;
}

.btn--gold {
    background: linear-gradient(135deg, var(--gold-light), var(--gold));
    color: #1a1409;
}

.btn--gold:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(201, 169, 97, 0.3);
}

.btn--outline {
    background: transparent;
    border-color: rgba(245, 243, 239, 0.25);
    color: var(--white);
}

.btn--outline:hover {
    border-color: var(--gold);
    color: var(--gold-light);
}

.btn--sm {
    padding: 10px 20px;
    font-size: 14px;
}

.btn--block {
    width: 100%;
}

.btn .icon {
    fill: currentColor;
}

.btn--whatsapp {
    background: #25d366;
    border-color: #25d366;
    color: #fff;
    box-shadow: 0 6px 18px rgba(37, 211, 102, 0.25);
}

.btn--whatsapp:hover {
    background: #1ebe5b;
    border-color: #1ebe5b;
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(37, 211, 102, 0.4);
}

.btn--telegram {
    background: #29a9eb;
    border-color: #29a9eb;
    color: #fff;
    box-shadow: 0 6px 18px rgba(41, 169, 235, 0.25);
}

.btn--telegram:hover {
    background: #1c96d4;
    border-color: #1c96d4;
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(41, 169, 235, 0.4);
}

/* Header */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(10, 10, 10, 0.7);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s ease, background 0.3s ease;
}

.header.is-scrolled {
    background: rgba(10, 10, 10, 0.92);
    border-bottom-color: var(--border);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    height: 84px;
}

.logo {
    display: flex;
    align-items: baseline;
    gap: 8px;
}

.logo__main {
    font-family: var(--font-heading);
    font-size: 24px;
    letter-spacing: 3px;
    color: var(--gold-light);
}

.logo__sub {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--gray);
}

.nav {
    display: flex;
    gap: 32px;
}

.nav__link {
    font-size: 15px;
    color: var(--white);
    opacity: 0.85;
    transition: opacity 0.2s ease, color 0.2s ease;
}

.nav__link:hover {
    opacity: 1;
    color: var(--gold-light);
}

.header__contact {
    display: flex;
    align-items: center;
    gap: 20px;
}

.burger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.burger span {
    display: block;
    height: 2px;
    background: var(--white);
    border-radius: 2px;
    transition: transform 0.25s ease, opacity 0.25s ease;
}

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

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

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

/* Hero */
.hero {
    position: relative;
    overflow: hidden;
    padding: 100px 0 80px;
}

.hero__glow {
    position: absolute;
    top: -200px;
    right: -150px;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(201, 169, 97, 0.18), transparent 70%);
    pointer-events: none;
}

.hero__inner {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
    gap: 40px;
}

.eyebrow {
    color: var(--gold-light);
    text-transform: uppercase;
    letter-spacing: 3px;
    font-size: 13px;
    font-weight: 600;
    margin: 0 0 18px;
}

.hero h1 {
    font-family: var(--font-heading);
    font-size: clamp(38px, 5vw, 62px);
    line-height: 1.1;
    margin: 0 0 24px;
    font-weight: 600;
}

.hero h1 .accent {
    color: var(--gold-light);
}

.hero__lead {
    max-width: 520px;
    color: var(--gray);
    font-size: 17px;
    margin: 0 0 36px;
}

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

.hero__visual {
    display: flex;
    justify-content: center;
}

.hero__visual img {
    width: 320px;
    height: 320px;
    object-fit: cover;
    border-radius: 24px;
    border: 1px solid var(--border);
    filter: drop-shadow(0 30px 60px rgba(0, 0, 0, 0.5));
}

/* Intro */
.intro {
    padding: 40px 0 80px;
    border-bottom: 1px solid var(--border);
}

.intro__text {
    max-width: 820px;
    margin: 0 auto;
    text-align: center;
    color: var(--gray);
    font-size: 18px;
}

.intro__text strong {
    color: var(--gold-light);
}

/* Section headings */
.section-title {
    font-family: var(--font-heading);
    font-size: clamp(28px, 3.4vw, 40px);
    font-weight: 600;
    text-align: center;
    margin: 0 0 12px;
}

.section-title--left {
    text-align: left;
}

.section-sub {
    text-align: center;
    color: var(--gray);
    margin: 0 0 48px;
}

/* Advantages */
.advantages {
    padding: 90px 0;
    background: var(--dark);
}

.advantages__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
    gap: 20px;
}

.adv-card {
    display: flex;
    flex-direction: column;
    background: var(--black);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 28px 22px;
    transition: border-color 0.25s ease, transform 0.25s ease;
}

.adv-card:hover {
    border-color: var(--gold);
    transform: translateY(-4px);
}

.adv-card__icon {
    width: 32px;
    height: 32px;
    flex-shrink: 0;
    fill: none;
    stroke: var(--gold);
    stroke-width: 1.6;
    margin-bottom: 18px;
}

.adv-card h3 {
    font-family: var(--font-body);
    font-size: 15.5px;
    line-height: 1.5;
    margin: 0;
    font-weight: 500;
    color: var(--white);
}

.adv-card p {
    color: var(--gray);
    font-size: 14.5px;
    margin: 10px 0 0;
}

/* Process */
.process {
    padding: 90px 0;
}

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

.process-step {
    position: relative;
    padding-top: 8px;
}

.process-step__num {
    display: block;
    font-family: var(--font-heading);
    font-size: 46px;
    color: transparent;
    -webkit-text-stroke: 1.5px var(--gold);
    margin-bottom: 10px;
}

.process-step h3 {
    font-size: 18px;
    margin: 0 0 8px;
}

.process-step p {
    color: var(--gray);
    font-size: 14.5px;
    margin: 0;
}

/* Factors */
.factors {
    padding: 90px 0;
    background: var(--dark);
}

.factors__inner {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 60px;
    align-items: center;
}

.factors__list {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin: 24px 0;
}

.factors__list li {
    position: relative;
    padding-left: 26px;
    color: var(--white);
}

.factors__list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 9px;
    width: 8px;
    height: 8px;
    border-radius: 2px;
    background: var(--gold);
    transform: rotate(45deg);
}

.factors__note {
    color: var(--gray);
    font-size: 14.5px;
}

.factors__visual {
    display: flex;
    justify-content: center;
}

.factors__visual svg {
    width: 200px;
}

.gem-outline {
    fill: none;
    stroke: var(--gold);
    stroke-width: 1.5;
}

.gem-inner {
    fill: rgba(201, 169, 97, 0.15);
    stroke: var(--gold-light);
    stroke-width: 1;
}

/* CTA */
.cta {
    padding: 90px 0;
    text-align: center;
    background: linear-gradient(135deg, rgba(201, 169, 97, 0.12), transparent 60%);
}

.cta__inner h2 {
    font-family: var(--font-heading);
    font-size: clamp(28px, 3.6vw, 40px);
    margin: 0 0 16px;
}

.cta__inner p {
    color: var(--gray);
    max-width: 520px;
    margin: 0 auto 32px;
}

/* Contact */
.contact {
    padding: 90px 0;
    background: linear-gradient(135deg, rgba(201, 169, 97, 0.12), transparent 60%);
}

.contact__inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact__info p {
    color: var(--gray);
    margin: 0 0 28px;
}

.contact__list {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.contact__list li {
    display: flex;
    flex-direction: column;
    gap: 4px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 14px;
}

.contact__list li span:first-child {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--gray);
}

.contact__list li a:hover {
    color: var(--gold-light);
}

.contact__form {
    background: var(--black);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 36px;
}

.contact__form h3 {
    font-family: var(--font-heading);
    font-size: 22px;
    margin: 0 0 24px;
}

.field {
    margin-bottom: 18px;
}

.field label {
    display: block;
    font-size: 13px;
    color: var(--gray);
    margin-bottom: 6px;
}

.field input, .field textarea {
    width: 100%;
    background: var(--dark-2);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 12px 14px;
    color: var(--white);
    font-family: var(--font-body);
    font-size: 15px;
    resize: vertical;
    transition: border-color 0.2s ease;
}

.field input:focus, .field textarea:focus {
    outline: none;
    border-color: var(--gold);
}

.field.has-error input, .field.has-error textarea {
    border-color: #d16565;
}

.field__error {
    display: block;
    min-height: 16px;
    font-size: 12.5px;
    color: #e08b8b;
    margin-top: 4px;
}

.contact__success {
    margin-top: 16px;
    color: var(--gold-light);
    font-size: 14.5px;
    text-align: center;
}

/* Footer */
.footer {
    padding: 60px 0 0;
    border-top: 1px solid var(--border);
}

.footer__inner {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
}

.footer__brand p {
    color: var(--gray);
    font-size: 14px;
    margin-top: 14px;
    max-width: 280px;
}

.footer__nav {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer__nav a:hover {
    color: var(--gold-light);
}

.footer__contact {
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
}

.footer__contact a:hover {
    color: var(--gold-light);
}

.footer__social {
    display: flex;
    gap: 14px;
    margin-top: 6px;
}

.footer__social a {
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
    border-radius: 50%;
    transition: border-color 0.2s ease, color 0.2s ease;
}

.footer__social a:hover {
    border-color: var(--gold);
    color: var(--gold-light);
}

.footer__social svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

.footer__social a[aria-label="WhatsApp"]:hover {
    background: #25d366;
    border-color: #25d366;
    color: #fff;
}

.footer__social a[aria-label="Telegram"]:hover {
    background: #29a9eb;
    border-color: #29a9eb;
    color: #fff;
}

.footer__bottom {
    border-top: 1px solid var(--border);
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
    color: var(--gray);
    font-size: 12.5px;
}

/* Floating buttons */
.floating-buttons {
    position: fixed;
    right: 24px;
    bottom: 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 90;
}

.floating-btn {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.4);
    transition: transform 0.2s ease;
}

.floating-btn:hover {
    transform: translateY(-3px) scale(1.08);
}

.floating-btn svg {
    width: 26px;
    height: 26px;
    fill: #fff;
}

.floating-btn--whatsapp {
    background: #25d366;
    animation: pulse-whatsapp 2.4s infinite;
}

.floating-btn--telegram {
    background: #29a9eb;
    animation: pulse-telegram 2.4s infinite;
}

.floating-btn--whatsapp:hover, .floating-btn--telegram:hover {
    animation-play-state: paused;
}

@keyframes pulse-whatsapp {
    0% {
        box-shadow: 0 10px 24px rgba(0, 0, 0, 0.4), 0 0 0 0 rgba(37, 211, 102, 0.55);
    }
    70% {
        box-shadow: 0 10px 24px rgba(0, 0, 0, 0.4), 0 0 0 14px rgba(37, 211, 102, 0);
    }
    100% {
        box-shadow: 0 10px 24px rgba(0, 0, 0, 0.4), 0 0 0 0 rgba(37, 211, 102, 0);
    }
}

@keyframes pulse-telegram {
    0% {
        box-shadow: 0 10px 24px rgba(0, 0, 0, 0.4), 0 0 0 0 rgba(41, 169, 235, 0.55);
    }
    70% {
        box-shadow: 0 10px 24px rgba(0, 0, 0, 0.4), 0 0 0 14px rgba(41, 169, 235, 0);
    }
    100% {
        box-shadow: 0 10px 24px rgba(0, 0, 0, 0.4), 0 0 0 0 rgba(41, 169, 235, 0);
    }
}

/* Reveal animation */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Responsive */
@media (max-width: 960px) {
    .nav {
        display: none;
    }

    .burger {
        display: flex;
    }

    .hero__inner {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero__lead {
        margin-left: auto;
        margin-right: auto;
    }

    .hero__actions {
        justify-content: center;
    }

    .hero__visual {
        order: -1;
    }

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

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

    .factors__visual {
        order: -1;
    }

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

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

    .nav.is-open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 84px;
        left: 0;
        right: 0;
        background: rgba(10, 10, 10, 0.98);
        border-bottom: 1px solid var(--border);
        padding: 20px 24px 28px;
        gap: 18px;
    }
}

@media (max-width: 640px) {
    .process__grid {
        grid-template-columns: 1fr;
    }
}