:root {
    --bg: #0f1115;
    --bg2: #171923;
    --card: rgba(255, 255, 255, .065);
    --card2: rgba(255, 255, 255, .035);
    --border: rgba(255, 255, 255, .12);
    --text: #f8fafc;
    --muted: #a1a1aa;
    --gold: #d4af37;
    --gold2: #f5d76e;
    --dark-gold: #7c5f13;
    --shadow: 0 28px 80px rgba(0, 0, 0, .35);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: Tahoma, Arial, sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at 80% 0%, rgba(212, 175, 55, .18), transparent 30%),
        radial-gradient(circle at 10% 18%, rgba(245, 215, 110, .10), transparent 28%),
        linear-gradient(180deg, var(--bg), var(--bg2) 55%, #09090b);
    min-height: 100vh;
    line-height: 1.85;
}

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

.container {
    width: min(1180px, 92%);
    margin: 0 auto;
}

.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(9, 9, 11, .76);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(16px);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 13px 0;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
}

.brand-mark {
    width: 38px;
    height: 38px;
    border-radius: 15px;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, var(--gold2), var(--gold));
    color: #1c1404;
    font-weight: 900;
    box-shadow: 0 14px 40px rgba(212, 175, 55, .22);
}

.menu {
    display: flex;
    gap: 17px;
    color: var(--muted);
    font-size: 14px;
}

.menu a:hover {
    color: var(--gold2);
}

.hero {
    padding: 72px 0 42px;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.1fr .9fr;
    gap: 32px;
    align-items: center;
}

.badge {
    display: inline-flex;
    align-items: center;
    padding: 7px 15px;
    border-radius: 999px;
    border: 1px solid rgba(212, 175, 55, .35);
    color: #fde68a;
    background: rgba(212, 175, 55, .10);
    font-size: 13px;
    margin-bottom: 16px;
}

h1 {
    margin: 0;
    font-size: clamp(30px, 5vw, 56px);
    line-height: 1.32;
    letter-spacing: -1px;
}

h2, h3 {
    color: #fff;
}

.hero p,
.section-title p,
.card p,
.gold-card li,
.gold-card span,
.glass-box p,
.article-card p,
.course-card p,
.contact-list span,
.form-note {
    color: var(--muted);
}

.actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 24px;
}

.btn {
    display: inline-flex;
    padding: 12px 18px;
    border-radius: 15px;
    border: 1px solid var(--border);
    transition: .18s ease;
}

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

.btn.primary {
    background: linear-gradient(135deg, var(--gold2), var(--gold));
    color: #1c1404;
    font-weight: 800;
}

.btn.ghost {
    background: rgba(255,255,255,.05);
}

.gold-card,
.card,
.glass-box,
.course-card,
.article-card,
.contact-form {
    border: 1px solid var(--border);
    background: linear-gradient(180deg, var(--card), var(--card2));
    border-radius: 28px;
    box-shadow: var(--shadow);
}

.gold-card {
    padding: 30px;
    position: relative;
    overflow: hidden;
}

.gold-card::before {
    content: "";
    position: absolute;
    width: 180px;
    height: 180px;
    border-radius: 50%;
    background: rgba(212, 175, 55, .16);
    left: -60px;
    top: -70px;
}

.gold-card h2 {
    position: relative;
    margin-top: 8px;
}

.gold-card ul {
    position: relative;
    padding-right: 20px;
    margin-bottom: 0;
}

.stats {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
    margin: 24px 0 42px;
}

.stats article {
    border: 1px solid var(--border);
    background: rgba(255,255,255,.045);
    border-radius: 22px;
    padding: 18px;
}

.stats strong {
    display: block;
    color: var(--gold2);
    font-size: 17px;
}

.stats span {
    display: block;
    color: var(--muted);
    font-size: 13px;
    margin-top: 4px;
}

.section {
    margin: 40px 0;
}

.section-title {
    max-width: 790px;
    margin-bottom: 18px;
}

.cards-grid,
.course-grid,
.article-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

.card,
.course-card,
.article-card {
    padding: 23px;
}

.course-meta {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    color: #fde68a;
    font-size: 13px;
}

.text-link {
    display: inline-flex;
    margin-top: 12px;
    color: var(--gold2);
}

.article-cat {
    color: #fde68a;
    font-size: 13px;
}

.split,
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
}

.glass-box {
    padding: 28px;
}

.check-list,
.number-list {
    color: var(--muted);
    padding-right: 22px;
}

.page-hero {
    text-align: center;
    padding: 52px 0 26px;
}

.page-hero p {
    color: var(--muted);
    max-width: 760px;
    margin: 12px auto 0;
}

.content-page {
    padding: 44px 0;
}

.contact-list {
    display: grid;
    gap: 12px;
    margin-top: 20px;
}

.contact-list div {
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: 16px;
    background: rgba(255,255,255,.04);
}

.contact-list strong {
    color: var(--gold2);
    margin-left: 6px;
}

.contact-form {
    padding: 24px;
    display: grid;
    gap: 14px;
}

label {
    display: grid;
    gap: 7px;
    color: #fff;
}

input,
textarea {
    width: 100%;
    border: 1px solid var(--border);
    background: rgba(9, 9, 11, .72);
    border-radius: 14px;
    padding: 12px 14px;
    color: var(--text);
    font-family: inherit;
    outline: none;
}

input:focus,
textarea:focus {
    border-color: rgba(212, 175, 55, .56);
}

button {
    border: 0;
    border-radius: 15px;
    padding: 12px 18px;
    font-family: inherit;
    cursor: pointer;
    background: linear-gradient(135deg, var(--gold2), var(--gold));
    color: #1c1404;
    font-weight: 800;
}

.form-note {
    font-size: 13px;
    margin: 0;
}

.footer {
    margin-top: 42px;
    padding: 28px 0 40px;
    border-top: 1px solid var(--border);
    color: var(--muted);
    text-align: center;
    font-size: 13px;
}

@media (max-width: 980px) {
    .hero-grid,
    .cards-grid,
    .course-grid,
    .article-grid,
    .split,
    .contact-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .stats {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 720px) {
    .header {
        position: static;
    }

    .nav {
        display: block;
        text-align: center;
    }

    .brand,
    .menu {
        justify-content: center;
    }

    .menu {
        margin-top: 12px;
        flex-wrap: wrap;
    }

    .hero {
        padding-top: 38px;
        text-align: center;
    }

    .hero-grid,
    .cards-grid,
    .course-grid,
    .article-grid,
    .split,
    .contact-grid,
    .stats {
        grid-template-columns: 1fr;
    }
}

.price-hero {
    padding: 64px 0 30px;
}

.price-hero-grid {
    display: grid;
    grid-template-columns: 1.15fr .85fr;
    gap: 28px;
    align-items: center;
}

.price-hero p {
    color: var(--muted);
    max-width: 780px;
}

.live-status {
    display: flex;
    align-items: center;
    gap: 12px;
    width: fit-content;
    margin-top: 22px;
    padding: 12px 15px;
    border: 1px solid rgba(212, 175, 55, .25);
    background: rgba(212, 175, 55, .08);
    border-radius: 18px;
}

.live-status strong {
    display: block;
    color: #fff;
}

.live-status small {
    display: block;
    color: var(--muted);
    font-size: 12px;
}

.pulse {
    width: 13px;
    height: 13px;
    border-radius: 999px;
    background: #22c55e;
    box-shadow: 0 0 0 rgba(34, 197, 94, .65);
    animation: pulse 1.6s infinite;
    flex: 0 0 auto;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(34, 197, 94, .6);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(34, 197, 94, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(34, 197, 94, 0);
    }
}

.market-summary {
    border: 1px solid var(--border);
    background:
        radial-gradient(circle at top left, rgba(245, 215, 110, .18), transparent 35%),
        linear-gradient(180deg, var(--card), var(--card2));
    border-radius: 30px;
    box-shadow: var(--shadow);
    padding: 30px;
}

.market-summary > span {
    color: #fde68a;
    font-size: 13px;
}

.market-summary p {
    color: var(--muted);
}

.summary-row {
    margin-top: 20px;
    padding: 14px;
    border: 1px solid rgba(255,255,255,.10);
    background: rgba(255,255,255,.045);
    border-radius: 18px;
}

.summary-row strong {
    display: block;
    font-size: 28px;
    color: var(--gold2);
    direction: ltr;
    text-align: right;
}

.summary-row span {
    color: var(--muted);
    font-size: 13px;
}

.price-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
    margin: 26px 0 42px;
}

.price-card {
    border: 1px solid var(--border);
    background: linear-gradient(180deg, var(--card), var(--card2));
    border-radius: 24px;
    box-shadow: var(--shadow);
    padding: 19px;
}

.price-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 12px;
}

.price-card-top span {
    color: #fff;
    font-weight: 700;
}

.price-card-top small {
    direction: ltr;
    font-weight: 800;
    border-radius: 999px;
    padding: 3px 8px;
    font-size: 12px;
}

.price-card-top small.up {
    color: #86efac;
    background: rgba(34,197,94,.10);
    border: 1px solid rgba(34,197,94,.20);
}

.price-card-top small.down {
    color: #fca5a5;
    background: rgba(239,68,68,.10);
    border: 1px solid rgba(239,68,68,.20);
}

.price-card-top small.flat {
    color: #e5e7eb;
    background: rgba(255,255,255,.08);
    border: 1px solid rgba(255,255,255,.14);
}

.price-card strong {
    display: block;
    font-size: 26px;
    color: var(--gold2);
    direction: ltr;
    text-align: right;
}

.price-card em {
    display: block;
    font-style: normal;
    color: var(--muted);
    margin-top: 4px;
    font-size: 13px;
}

.calculator-section,
.chart-section,
.faq-section {
    margin: 42px 0;
}

.calculator-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.gold-calculator,
.calc-result {
    border: 1px solid var(--border);
    background: linear-gradient(180deg, var(--card), var(--card2));
    border-radius: 28px;
    box-shadow: var(--shadow);
    padding: 24px;
}

.gold-calculator {
    display: grid;
    gap: 14px;
}

.calc-result h3 {
    margin-top: 0;
}

.result-row {
    display: flex;
    justify-content: space-between;
    gap: 14px;
    padding: 13px 0;
    border-bottom: 1px solid rgba(255,255,255,.09);
}

.result-row span {
    color: var(--muted);
}

.result-row strong {
    color: #fff;
    direction: ltr;
    text-align: left;
}

.result-row.total {
    border-bottom: 0;
    margin-top: 8px;
    padding: 16px;
    border-radius: 18px;
    background: rgba(212,175,55,.10);
    border: 1px solid rgba(212,175,55,.20);
}

.result-row.total strong {
    color: var(--gold2);
    font-size: 20px;
}

.calc-result p {
    color: var(--muted);
    font-size: 13px;
}

.fake-chart {
    height: 320px;
    border: 1px solid var(--border);
    background:
        linear-gradient(180deg, rgba(255,255,255,.045), rgba(255,255,255,.02));
    border-radius: 28px;
    box-shadow: var(--shadow);
    padding: 24px;
    display: flex;
    align-items: end;
    gap: 14px;
}

.fake-chart div {
    flex: 1;
    min-height: 28px;
    border-radius: 16px 16px 8px 8px;
    background: linear-gradient(180deg, var(--gold2), var(--gold));
    position: relative;
    box-shadow: 0 18px 40px rgba(212,175,55,.15);
}

.fake-chart span {
    position: absolute;
    bottom: -30px;
    right: 50%;
    transform: translateX(50%);
    color: var(--muted);
    font-size: 12px;
    white-space: nowrap;
}

.formula-box {
    margin-top: 18px;
    padding: 16px;
    border-radius: 18px;
    background: rgba(212,175,55,.10);
    border: 1px solid rgba(212,175,55,.22);
    color: var(--gold2);
    font-weight: 800;
}

.faq-section {
    border: 1px solid var(--border);
    background: linear-gradient(180deg, var(--card), var(--card2));
    box-shadow: var(--shadow);
    border-radius: 28px;
    padding: 24px;
}

.faq-section h2 {
    margin-top: 0;
}

.faq-section details {
    border-top: 1px solid rgba(255,255,255,.09);
    padding: 15px 0;
}

.faq-section details:first-of-type {
    border-top: 0;
}

.faq-section summary {
    cursor: pointer;
    color: #fff;
    font-weight: 700;
}

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

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

    .price-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 720px) {
    .price-hero {
        text-align: center;
        padding-top: 38px;
    }

    .live-status {
        width: 100%;
        text-align: right;
    }

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

    .fake-chart {
        gap: 8px;
        padding: 16px;
        height: 260px;
    }

    .price-card strong {
        font-size: 23px;
    }
}