:root {
    --color-primary: #f15525;
    --color-primary-dark: #cf4217;
    --color-ink: #111318;
    --color-text: #30343b;
    --color-muted: #6f7785;
    --color-border: #e7eaf0;
    --color-surface: #ffffff;
    --color-soft: #f6f8fb;
    --color-dark: #10131a;
    --color-dark-soft: #181c25;
    --shadow-soft: 0 24px 70px rgba(17, 19, 24, 0.08);
    --shadow-card: 0 18px 45px rgba(17, 19, 24, 0.07);
    --container: 1180px;
    --radius: 8px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    background: var(--color-surface);
    color: var(--color-text);
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.6;
    text-rendering: optimizeLegibility;
}

body::before {
    position: fixed;
    inset: 0;
    z-index: -2;
    background-image: url("../images/rk-pattern.svg");
    background-position: top 120px right -120px;
    background-repeat: no-repeat;
    background-size: min(62vw, 720px) auto;
    content: "";
    opacity: 0.75;
    pointer-events: none;
}

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

a {
    color: inherit;
}

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

.skip-link {
    position: absolute;
    left: 24px;
    top: 16px;
    z-index: 20;
    transform: translateY(-150%);
    background: var(--color-ink);
    color: #fff;
    padding: 10px 14px;
    border-radius: var(--radius);
}

.skip-link:focus {
    transform: translateY(0);
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 10;
    border-bottom: 1px solid rgba(231, 234, 240, 0.8);
    background: rgba(255, 255, 255, 0.86);
    backdrop-filter: blur(18px);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    min-height: 82px;
}

.logo {
    color: var(--color-ink);
    font-size: 1rem;
    font-weight: 800;
    letter-spacing: 0;
}

.logo img,
.custom-logo {
    width: auto;
    height: 52px;
}

.site-nav {
    display: flex;
    align-items: center;
}

.primary-menu {
    display: flex;
    align-items: center;
    gap: 26px;
    list-style: none;
}

.primary-menu a {
    color: var(--color-text);
    font-size: 0.95rem;
    font-weight: 650;
    text-decoration: none;
}

.primary-menu a:hover,
.primary-menu a:focus {
    color: var(--color-primary);
}

.section {
    padding: 112px 0;
}

.section--soft {
    background:
        url("../images/rk-pattern.svg") left -260px top 80px / 620px auto no-repeat,
        linear-gradient(180deg, #fff 0%, var(--color-soft) 100%);
}

.section--dark {
    background:
        linear-gradient(115deg, rgba(241, 85, 37, 0.1), transparent 36%),
        var(--color-dark);
    color: #fff;
}

.section--contact {
    padding-top: 64px;
}

.section-heading {
    max-width: 720px;
    margin-bottom: 44px;
}

.section-heading h2,
.about-layout h2,
.split-section h2,
.contact-panel h2 {
    color: var(--color-ink);
    font-size: clamp(2.1rem, 4vw, 4rem);
    line-height: 1.05;
    letter-spacing: 0;
}

.section--dark .section-heading h2 {
    color: #fff;
}

.eyebrow {
    margin-bottom: 16px;
    color: var(--color-primary);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 20px;
    border: 1px solid transparent;
    border-radius: var(--radius);
    font-weight: 750;
    text-decoration: none;
    transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

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

.button--primary {
    background: var(--color-primary);
    color: #fff;
    box-shadow: 0 16px 34px rgba(241, 85, 37, 0.24);
}

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

.button--secondary {
    border-color: var(--color-border);
    background: #fff;
    color: var(--color-ink);
}

.hero {
    position: relative;
    overflow: hidden;
    isolation: isolate;
    padding: 108px 0 96px;
}

.hero::before {
    position: absolute;
    inset: 0;
    z-index: 1;
    background:
        linear-gradient(90deg, rgba(255, 255, 255, 0.32) 0%, rgba(255, 255, 255, 0.0) 42%, rgba(255, 247, 244, 0.10) 100%),
        linear-gradient(115deg, rgba(241, 85, 37, 0.12), transparent 36%);
    content: "";
    pointer-events: none;
}

.hero::after {
    position: absolute;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 2;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(241, 85, 37, 0.42), transparent);
    content: "";
}

.hero__background,
.hero__background-slide {
    position: absolute;
    inset: 0;
}

.hero__background {
    z-index: 0;
    background: #fff7f4;
    pointer-events: none;
}

.hero__background-slide {
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    opacity: 0;
    transition: opacity 1200ms ease;
}

.hero__background-slide.is-active {
    opacity: 1;
}

.hero__inner {
    position: relative;
    z-index: 2;
    display: block;
}

.hero__content {
    position: relative;
    z-index: 1;
}

.hero h1 {
    max-width: 780px;
    color: var(--color-ink);
    font-size: clamp(2.9rem, 5.8vw, 5.6rem);
    line-height: 1;
    letter-spacing: 0;
}

.hero__lead {
    max-width: 670px;
    margin-top: 28px;
    color: #555;
    font-size: clamp(1.1rem, 2vw, 1.35rem);
}

.hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 34px;
}

.split-section {
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1fr);
    gap: 72px;
}

.about-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(280px, 360px);
    align-items: center;
    gap: 72px;
}

.about-layout__content {
    max-width: 760px;
}

.profile-card__contact {
    display: flex;
    flex-direction: column;
    gap: .75rem;
    width: 100%;
}

.profile-card__contact-item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: .7rem;
    width: 100%;
    padding: .8rem 1rem;
    border: 1px solid rgba(0, 0, 0, .12);
    border-radius: 12px;
    background: transparent;
    color: inherit;
    font: inherit;
    text-decoration: none;
    cursor: pointer;
    transition: transform .2s ease, background-color .2s ease;
}

.profile-card__contact-item:hover {
    transform: translateY(-2px);
    background: rgba(0, 0, 0, .035);
}

.profile-card__contact-item svg {
    width: 21px;
    height: 21px;
    flex-shrink: 0;
}

.profile-card__contact-item--phone:hover svg {
    animation: rkPhoneShake .45s ease-in-out;
}

.profile-card__contact-item--email:hover svg {
    animation: rkEmailFlip .6s ease-in-out;
}

.profile-card__contact-item.is-revealed {
    cursor: pointer;
}

@keyframes rkPhoneShake {
    0%, 100% { transform: rotate(0); }
    20% { transform: rotate(-6deg); }
    40% { transform: rotate(6deg); }
    60% { transform: rotate(-4deg); }
    80% { transform: rotate(4deg); }
}

@keyframes rkEmailFlip {
    0%   { transform: rotateY(0); }
    50%  { transform: rotateY(180deg); }
    100% { transform: rotateY(360deg); }
}

.section-copy {
    display: grid;
    gap: 20px;
    margin-top: 28px;
    color: var(--color-muted);
    font-size: 1.12rem;
}

.profile-card {
    display: grid;
    justify-items: center;
    gap: 18px;
    border: 1px solid rgba(231, 234, 240, 0.9);
    border-radius: var(--radius);
    background:
        linear-gradient(155deg, rgba(241, 85, 37, 0.12), transparent 45%),
        rgba(255, 255, 255, 0.86);
    padding: 34px;
    text-align: center;
    box-shadow: var(--shadow-soft);
    backdrop-filter: blur(18px);
}

.profile-card__image,
.profile-card__avatar {
    width: 144px;
    height: 144px;
    border: 6px solid rgba(241, 85, 37, 0.18);
    border-radius: 50%;
    box-shadow: 0 20px 45px rgba(17, 19, 24, 0.12);
}

.profile-card__image {
    object-fit: cover;
}

.profile-card__avatar {
    display: grid;
    place-items: center;
    background: var(--color-ink);
    color: #fff;
    font-size: 2.8rem;
    font-weight: 850;
}

.profile-card__identity {
    display: grid;
    gap: 2px;
}

.profile-card__identity strong {
    color: var(--color-ink);
    font-size: 1.35rem;
    line-height: 1.2;
}

.profile-card__identity span,
.profile-card small {
    color: var(--color-muted);
}

.profile-card__link {
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 12px 16px;
    color: var(--color-ink);
    font-weight: 750;
    text-decoration: none;
}

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

.card-grid--services {
    grid-template-columns: repeat(6, minmax(0, 1fr));
}

.service-card,
.reference-card {
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: #fff;
    padding: 26px;
    box-shadow: var(--shadow-card);
}

.service-card {
    grid-column: span 2;
    min-height: 190px;
}

.service-card__icon {
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    margin-bottom: 22px;
    border: 1px solid rgba(241, 85, 37, 0.18);
    border-radius: var(--radius);
    background: rgba(241, 85, 37, 0.08);
    color: var(--color-primary);
}

.service-card__icon svg {
    width: 23px;
    height: 23px;
}

.service-card h3,
.project-card h3 {
    color: var(--color-ink);
    font-size: 1.28rem;
    line-height: 1.2;
}

.service-card p,
.reference-card blockquote {
    margin-top: 14px;
    color: var(--color-muted);
}

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

.project-card {
    min-height: 280px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius);
    background: linear-gradient(180deg, var(--color-dark-soft), #11141b);
    padding: 28px;
}

.project-card p {
    margin-bottom: 72px;
    color: #ffb39a;
    font-size: 0.82rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.project-card h3 {
    color: #fff;
}

.project-card span {
    display: block;
    margin-top: 14px;
    color: #b9c0ce;
}

.reference-card blockquote {
    font-size: 1.08rem;
}

.reference-card figcaption {
    display: grid;
    gap: 2px;
    margin-top: 28px;
}

.reference-card strong {
    color: var(--color-ink);
}

.reference-card span {
    color: var(--color-muted);
    font-size: 0.95rem;
}

.reference-card {
    position: relative;
    overflow: hidden;
}

.reference-card--testimonial {
    border-color: rgba(241, 85, 37, 0.24);
    background:
        linear-gradient(145deg, rgba(241, 85, 37, 0.055), transparent 62%),
        #fff;
}

.reference-card__quote-mark {
    display: block;
    height: 38px;
    margin-bottom: 4px;
    color: var(--color-primary) !important;
    font-family: Georgia, "Times New Roman", serif;
    font-size: 3.5rem !important;
    font-weight: 700;
    line-height: 1;
}

.reference-card__link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: fit-content;
    min-height: 44px;
    margin-top: 14px;
    padding: 0 17px;
    border-radius: var(--radius);
    background: var(--color-primary);
    color: #fff;
    font-size: 0.92rem;
    font-weight: 750;
    line-height: 1;
    text-decoration: none;
    box-shadow: 0 12px 26px rgba(241, 85, 37, 0.20);
    transition:
        background 180ms ease,
        box-shadow 180ms ease,
        transform 180ms ease;
}

.reference-card__link span {
    color: inherit;
    font-size: inherit;
}

.reference-card__arrow {
    display: inline-block;
    font-size: 1.15rem !important;
    line-height: 1;
    transition: transform 180ms ease;
}

.reference-card__link:hover,
.reference-card__link:focus-visible {
    background: var(--color-primary-dark);
    box-shadow: 0 15px 30px rgba(241, 85, 37, 0.26);
    transform: translateY(-1px);
}

.reference-card__link:hover .reference-card__arrow,
.reference-card__link:focus-visible .reference-card__arrow {
    transform: translateX(5px);
}

.reference-card__link:focus-visible {
    outline: 3px solid rgba(241, 85, 37, 0.22);
    outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
    .reference-card__link,
    .reference-card__arrow {
        transition: none;
    }

    .reference-card__link:hover,
    .reference-card__link:focus-visible,
    .reference-card__link:hover .reference-card__arrow,
    .reference-card__link:focus-visible .reference-card__arrow {
        transform: none;
    }
}

.contact-panel {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 32px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background:
        linear-gradient(115deg, rgba(241, 85, 37, 0.1), transparent 42%),
        #fff;
    padding: clamp(32px, 6vw, 64px);
    box-shadow: var(--shadow-soft);
}

.contact-panel p {
    max-width: 560px;
    margin-top: 18px;
    color: var(--color-muted);
    font-size: 1.1rem;
}

.contact-panel__actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: flex-end;
    gap: 16px;
}

.contact-link {
    color: var(--color-ink);
    font-weight: 750;
    text-decoration: none;
}

.contact-meta {
    color: var(--color-muted);
    font-size: 0.95rem;
    font-weight: 650;
}

.site-footer {
    border-top: 1px solid var(--color-border);
    padding: 32px 0;
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    color: var(--color-muted);
    font-size: 0.95rem;
}

.footer-inner a {
    text-decoration: none;
}

.has-js .reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 700ms ease, transform 700ms ease;
}

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

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

    .hero__background-slide,
    .has-js .reveal {
        animation: none;
        transition: none;
    }

    .has-js .reveal {
        opacity: 1;
        transform: none;
    }
}

@media (max-width: 980px) {
    .about-layout,
    .split-section,
    .contact-panel {
        grid-template-columns: 1fr;
    }

    .card-grid,
    .project-grid {
        grid-template-columns: 1fr;
    }

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

    .service-card {
        grid-column: auto;
    }

    .contact-panel__actions {
        display: grid;
        justify-content: flex-start;
    }
}

@media (max-width: 720px) {
    .header-inner {
        align-items: flex-start;
        flex-direction: column;
        justify-content: center;
        min-height: auto;
        padding: 18px 0;
    }

    .primary-menu {
        flex-wrap: wrap;
        gap: 12px 18px;
    }

    .section {
        padding: 76px 0;
    }

    .hero {
        padding: 72px 0 64px;
    }

    .hero h1 {
        font-size: clamp(2.65rem, 15vw, 4.2rem);
    }

    .card-grid--services {
        grid-template-columns: 1fr;
    }

    .footer-inner {
        align-items: flex-start;
        flex-direction: column;
    }
}