:root {
    --color-bg: #f4f7ff;
    --color-surface: rgba(255, 255, 255, 0.92);
    --color-panel: rgba(12, 17, 31, 0.75);
    --color-card: #ffffff;
    --color-card-muted: rgba(12, 17, 31, 0.04);
    --color-text: #0c111f;
    --color-text-soft: #4c5874;
    --color-accent: #ff6b4a;
    --color-accent-dark: #e25738;
    --color-link: #1f4cff;
    --color-border: rgba(12, 17, 31, 0.08);
    --font-heading: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --shadow-soft: 0 24px 48px rgba(12, 17, 31, 0.14);
    --shadow-card: 0 18px 32px rgba(12, 17, 31, 0.1);
}

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

body {
    margin: 0;
    font-family: var(--font-body);
    font-size: 18px;
    line-height: 1.65;
    color: var(--color-text);
    background: linear-gradient(135deg, #f8faff 0%, #eef1fd 100%);
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: var(--color-link);
    text-decoration: none;
    transition: color 0.2s ease, opacity 0.2s ease;
}

a:hover,
a:focus {
    opacity: 0.85;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--color-text);
    margin: 0 0 1.25rem;
    line-height: 1.25;
}

p {
    margin: 1rem 0;
    color: var(--color-text-soft);
}

ul,
ol {
    margin: 1.25rem 0 1.25rem 1.5rem;
    color: var(--color-text-soft);
}

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

.container {
    width: min(1180px, 94vw);
    margin: 0 auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    min-height: 72px;
}

.brand {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: 0.05em;
}

.site-nav ul {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.site-nav a {
    color: var(--color-text);
    font-weight: 600;
    position: relative;
}

.site-nav a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -0.35rem;
    width: 100%;
    height: 2px;
    background: var(--color-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.2s ease;
}

.site-nav a:hover::after,
.site-nav a:focus::after,
.site-nav .is-active::after {
    transform: scaleX(1);
}

.site-main {
    display: block;
    flex: 1 0 auto;
    width: 100%;
}

.section {
    padding: clamp(1rem, 3vw, 1.7rem) 0;
}

.section--light {
    background: rgba(255, 255, 255, 0.72);
}

.section--accent {
    background: #0c111f;
    color: #f3f5ff;
    position: relative;
    overflow: hidden;
}

.section--accent::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at top right, rgba(31, 76, 255, 0.22), transparent 60%),
                radial-gradient(circle at 10% 40%, rgba(255, 107, 74, 0.26), transparent 55%);
    pointer-events: none;
}

.section--accent h2 {
    color: #fdfdff;
}

.hero {
    background: linear-gradient(135deg, #0c111f 0%, #17213a 55%, #1d2a49 100%);
    color: #ecf1ff;
    position: relative;
    overflow: hidden;
}

.hero::after {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 20% 20%, rgba(255, 107, 74, 0.35), transparent 60%),
                radial-gradient(circle at 80% 40%, rgba(31, 76, 255, 0.3), transparent 55%);
    pointer-events: none;
}

.hero__grid {
    position: relative;
    z-index: 1;
    display: grid;
    gap: 2.4rem;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    align-items: start;
}

.eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.25em;
    font-weight: 700;
    font-size: 0.75rem;
    color: rgba(236, 241, 255, 0.68);
    margin-bottom: 1.25rem;
}

.hero h1 {
    font-size: clamp(2.6rem, 5vw, 3.8rem);
    color: #ffffff;
    margin-bottom: 1.5rem;
}

.lead {
    font-size: 1.1rem;
    color: var(--color-text);
    max-width: 40ch;
}

.hero .lead {
    color: rgba(236, 241, 255, 0.8);
}

.hero__actions {
    margin: 2rem 0;
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.hero__actions--center {
    justify-content: center;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.85rem 1.8rem;
    border-radius: 999px;
    font-weight: 600;
    border: 1px solid transparent;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
    cursor: pointer;
}

.btn--primary {
    background: var(--color-accent);
    color: #ffffff;
    box-shadow: var(--shadow-soft);
}

.btn--primary:hover,
.btn--primary:focus {
    background: var(--color-accent-dark);
    transform: translateY(-2px);
}

.btn--ghost {
    background: transparent;
    border-color: rgba(236, 241, 255, 0.4);
    color: #ecf1ff;
}

.btn--ghost:hover,
.btn--ghost:focus {
    border-color: #ffffff;
    color: #ffffff;
}

.btn--soft {
    border-color: rgba(12, 17, 31, 0.08);
    box-shadow: none;
    background: rgba(255, 107, 74, 0.08);
    color: var(--color-text);
}

.btn--soft:hover,
.btn--soft:focus {
    background: rgba(255, 107, 74, 0.22);
    color: var(--color-text);
}

.hero__stats {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    padding: 0;
    margin: 0;
}

.hero__stats li {
    display: flex;
    flex-direction: column;
    font-size: 0.9rem;
    color: rgba(236, 241, 255, 0.7);
}

.hero__stats span {
    font-size: 1.8rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 0.25rem;
}

.hero__card {
    background: rgba(15, 23, 42, 0.72);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 1.5rem;
    padding: 2rem;
    box-shadow: 0 26px 52px rgba(10, 16, 31, 0.38);
    align-self: center;
}

.hero__card h2 {
    color: #ffffff;
    font-size: 1.4rem;
    margin-bottom: 1rem;
}

.hero__card p {
    color: rgba(236, 241, 255, 0.78);
}

.hero__contact {
    margin-top: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.hero__contact a {
    color: rgba(236, 241, 255, 0.85);
    word-break: break-word;
}

.hero__contact a:hover {
    color: #ffffff;
}

.section h2 {
    font-size: clamp(1.85rem, 3.4vw, 2.4rem);
    margin: 0 0 1.4rem;
}

.section p.lead {
    max-width: 60ch;
}

.expertise {
    display: flex;
    flex-direction: column;
    gap: 1.1rem;
}

.expertise__intro {
    max-width: 720px;
}

.expertise__intro h2 {
    font-size: clamp(1.6rem, 3vw, 2rem);
    margin: 0 0 0.75rem;
}

.expertise__grid {
    display: grid;
    gap: 1.4rem;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.expertise-card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: 1.5rem;
    box-shadow: var(--shadow-card);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.9rem;
    min-height: 100%;
}

.expertise-card h3 {
    margin-bottom: 0.35rem;
}

.expertise-card p {
    margin: 0.25rem 0 0;
}

.expertise-card .btn {
    align-self: center;
    margin-top: auto;
}

.card-grid {
    display: grid;
    gap: 1.4rem;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-card);
    border-radius: 1.25rem;
    padding: 1.35rem;
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}

.card h3 {
    margin-bottom: 0.35rem;
}

.card p {
    margin: 0;
}

.card ul {
    margin: 0;
    padding-left: 1.25rem;
}

.card li {
    margin-bottom: 0.6rem;
}

.timeline {
    display: grid;
    gap: 1.2rem;
}

.timeline__item {
    background: var(--color-card);
    border-radius: 1.25rem;
    padding: 1.35rem;
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-card);
    position: relative;
}

.timeline__item::before {
    content: "";
    position: absolute;
    inset: 0.8rem 0.8rem auto 0;
    height: 6px;
    background: linear-gradient(90deg, var(--color-accent), transparent 70%);
    border-radius: 999px;
}

.timeline__period {
    font-weight: 600;
    color: var(--color-text-soft);
    margin-bottom: 0.75rem;
}

.credential-panel {
    max-width: 720px;
    text-align: center;
}

.credential-panel p {
    margin: 0.75rem 0 0;
    color: rgba(243, 245, 255, 0.85);
}

.cta {
    text-align: center;
}

.cta__inner {
    background: var(--color-card);
    border-radius: 1.75rem;
    padding: clamp(2rem, 5vw, 3.2rem);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-soft);
}

.cta__inner p {
    margin-bottom: 2rem;
    color: var(--color-text);
}

.contact-list {
    display: grid;
    gap: 1rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.contact-list span {
    display: block;
    font-weight: 600;
    color: var(--color-text-soft);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.75rem;
    margin-bottom: 0.35rem;
}

.contact-list a {
    font-weight: 600;
    color: var(--color-text);
}

.site-footer {
    padding: 2.5rem 0;
    background: rgba(12, 17, 31, 0.92);
    color: rgba(236, 241, 255, 0.75);
    margin-top: auto;
    width: 100%;
}

.site-footer a {
    color: #ffffff;
}

.site-footer__inner {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    align-items: center;
    text-align: center;
}

.site-footer__inner p {
    margin: 0;
    color: rgba(236, 241, 255, 0.72);
}

.content article {
    background: var(--color-card);
    border-radius: 1.5rem;
    padding: clamp(2rem, 6vw, 3rem);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-card);
}

.content article h1 {
    margin-top: -0.8rem;
    font-size: clamp(1.5rem, 3vw, 2.1rem);
}

.content article > p:first-of-type {
    font-size: 1.05rem;
    color: var(--color-text);
}

.content-list {
    list-style: none;
    margin: 2rem 0 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.content-list h2 {
    margin-bottom: 0.4rem;
    font-size: clamp(1.05rem, 2.2vw, 1.35rem);
}

.content-list p {
    margin: 0;
    color: var(--color-text-soft);
}

.content-navigation {
    margin-top: 1.75rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.content-navigation__link {
    padding: 0.75rem 1.3rem;
    border-radius: 999px;
    background: var(--color-card-muted);
    font-weight: 600;
    color: var(--color-text);
    border: 1px solid var(--color-border);
    transition: transform 0.2s ease, background 0.2s ease;
}

.content-navigation__link:hover,
.content-navigation__link:focus {
    background: rgba(12, 17, 31, 0.12);
    transform: translateY(-1px);
}

blockquote {
    margin: 1.5rem 0;
    padding: 1.5rem 1.8rem;
    border-left: 5px solid var(--color-accent);
    background: rgba(255, 107, 74, 0.08);
    border-radius: 0.75rem;
    color: var(--color-text);
    font-style: normal;
}

pre,
code {
    font-family: "Courier New", Courier, monospace;
}

@media (max-width: 720px) {
    .site-nav ul {
        gap: 1rem;
        font-size: 0.95rem;
    }

    .hero__stats {
        gap: 1rem;
    }

    .hero__card {
        padding: 1.6rem;
    }

    .timeline__item::before {
        inset: 0.6rem 0.6rem auto 0;
    }

    .site-header__inner {
        flex-direction: column;
        justify-content: center;
        padding: 0.75rem 0;
    }
}

@media (max-width: 540px) {
    .hero__actions {
        flex-direction: column;
        align-items: stretch;
    }

    .btn {
        width: 100%;
    }
}
a {