:root {
    --header-height: 4.5rem;
    --page-max: 1180px;

    --bg: #edf3fa;
    --surface: rgba(255, 255, 255, .84);
    --surface-solid: #ffffff;
    --surface-soft: #f4f7fb;
    --title: #101827;
    --text: #4b5565;
    --muted: #7a8495;
    --line: rgba(16, 24, 39, .10);

    --sidebar: #07101f;
    --accent: #25c4ff;
    --accent-strong: #1683ff;
    --accent-soft: rgba(37, 196, 255, .13);

    --white: #ffffff;
    --shadow: 0 24px 70px rgba(21, 38, 68, .14);
    --radius-xl: 30px;
    --radius-lg: 22px;
    --radius-md: 16px;
    --transition: .25s ease;
}

body.dark-theme {
    --bg: #060b13;
    --surface: rgba(13, 22, 37, .88);
    --surface-solid: #0d1625;
    --surface-soft: #111d30;
    --title: #f4f8ff;
    --text: #c4cedc;
    --muted: #8b98aa;
    --line: rgba(255, 255, 255, .09);
    --shadow: 0 28px 80px rgba(0, 0, 0, .46);
}

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

html { scroll-behavior: smooth; }

body {
    margin: 0;
    color: var(--text);
    background:
        radial-gradient(circle at 10% 8%, rgba(37, 196, 255, .15), transparent 28rem),
        radial-gradient(circle at 92% 84%, rgba(22, 131, 255, .11), transparent 30rem),
        var(--bg);
    font-family: "Poppins", sans-serif;
    font-size: 15px;
    line-height: 1.65;
    transition: background-color var(--transition), color var(--transition);
}

body.menu-open { overflow: hidden; }
body.pdf-export { background: #ffffff !important; }

h1, h2, h3, p, ul { margin: 0; }
ul { padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font: inherit; }

.container {
    width: min(calc(100% - 2rem), var(--page-max));
    margin-inline: auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    height: var(--header-height);
    border-bottom: 1px solid transparent;
    background: rgba(237, 243, 250, .72);
    backdrop-filter: blur(18px);
    transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}

body.dark-theme .site-header { background: rgba(6, 11, 19, .78); }

.site-header.scrolled {
    border-color: var(--line);
    box-shadow: 0 10px 30px rgba(20, 38, 68, .08);
}

.nav {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: .7rem;
    min-width: max-content;
    font-weight: 700;
}

.brand__image {
    width: 42px;
    height: 42px;
    border-radius: 13px;
    object-fit: cover;
    box-shadow: 0 8px 22px rgba(22, 131, 255, .26);
}

.brand__text {
    color: var(--title);
    font-size: .9rem;
    letter-spacing: .15rem;
}

.nav__list {
    display: flex;
    align-items: center;
    gap: .2rem;
}

.nav__link {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    padding: .65rem .75rem;
    border-radius: 12px;
    color: var(--muted);
    font-size: .84rem;
    font-weight: 500;
    transition: color var(--transition), background var(--transition);
}

.nav__link i { font-size: 1.05rem; }

.nav__link:hover,
.nav__link.active-link {
    color: var(--accent-strong);
    background: var(--accent-soft);
}

.nav__actions { display: flex; gap: .5rem; }

.icon-button {
    display: grid;
    place-items: center;
    width: 42px;
    height: 42px;
    padding: 0;
    border: 1px solid var(--line);
    border-radius: 13px;
    color: var(--title);
    background: var(--surface);
    cursor: pointer;
    box-shadow: 0 6px 18px rgba(18, 35, 63, .07);
    transition: transform var(--transition), border-color var(--transition), color var(--transition);
}

.icon-button:hover {
    color: var(--accent-strong);
    border-color: rgba(22, 131, 255, .35);
    transform: translateY(-2px);
}

.icon-button i { font-size: 1.35rem; }
.nav__toggle { display: none; }

.page { padding-block: 2rem 1rem; }

.section-card,
.content-section {
    scroll-margin-top: calc(var(--header-height) + 1rem);
}

.hero {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(360px, .95fr);
    align-items: stretch;
    overflow: hidden;
    min-height: 660px;
    border: 1px solid rgba(255, 255, 255, .7);
    border-radius: var(--radius-xl);
    background:
        radial-gradient(circle at 15% 0%, rgba(37, 196, 255, .18), transparent 28rem),
        linear-gradient(145deg, #07101f, #050a13);
    box-shadow: var(--shadow);
}

.hero__content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: clamp(2rem, 5vw, 4.2rem);
    color: rgba(255, 255, 255, .78);
}

.eyebrow {
    color: var(--accent);
    font-size: .7rem;
    font-weight: 700;
    letter-spacing: .15rem;
}

.hero__title {
    margin-top: .85rem;
    color: var(--white);
    font-size: clamp(2.6rem, 7vw, 5.3rem);
    line-height: .98;
    letter-spacing: -.16rem;
}

.hero__title span { color: var(--accent); }

.hero__role {
    margin-top: 1rem;
    color: var(--white);
    font-size: clamp(1rem, 2.4vw, 1.35rem);
    font-weight: 600;
}

.hero__description {
    max-width: 650px;
    margin-top: 1rem;
    color: rgba(255, 255, 255, .64);
    font-size: .96rem;
}

.hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: .7rem;
    margin-top: 1.5rem;
}

.primary-button,
.secondary-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .5rem;
    min-height: 45px;
    padding: .72rem 1rem;
    border-radius: 13px;
    font-size: .8rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.primary-button {
    border: 0;
    color: var(--white);
    background: linear-gradient(135deg, var(--accent), var(--accent-strong));
    box-shadow: 0 10px 24px rgba(22, 131, 255, .26);
}

.secondary-button {
    border: 1px solid rgba(255, 255, 255, .15);
    color: var(--white);
    background: rgba(255, 255, 255, .06);
}

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

.social-list {
    display: flex;
    flex-wrap: wrap;
    gap: .55rem;
    margin-top: 1.25rem;
}

.social-link {
    display: grid;
    place-items: center;
    width: 42px;
    height: 42px;
    border: 1px solid rgba(37, 196, 255, .18);
    border-radius: 13px;
    color: var(--accent);
    background: rgba(37, 196, 255, .075);
    transition: transform var(--transition), background var(--transition), border-color var(--transition);
}

.social-link:hover {
    transform: translateY(-3px);
    border-color: rgba(37, 196, 255, .45);
    background: rgba(37, 196, 255, .14);
}

.social-link i { font-size: 1.3rem; }
.social-link--image img {
    width: 23px;
    height: 23px;
    object-fit: contain;
    filter: grayscale(1) brightness(0) invert(75%) sepia(52%) saturate(3148%) hue-rotate(166deg) brightness(103%) contrast(103%);
}

.hero__portrait-link {
    position: relative;
    display: block;
    min-height: 660px;
    overflow: hidden;
    background: #0b1421;
    cursor: zoom-in;
}

.hero__portrait {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 18%;
    transition: transform .6s ease;
}

.hero__portrait-link:hover .hero__portrait { transform: scale(1.025); }

.image-zoom {
    position: absolute;
    right: 1rem;
    bottom: 1rem;
    display: grid;
    place-items: center;
    width: 42px;
    height: 42px;
    border: 1px solid rgba(255, 255, 255, .2);
    border-radius: 13px;
    color: #fff;
    background: rgba(5, 10, 19, .58);
    backdrop-filter: blur(8px);
}

.content-section {
    padding: 5rem 0 1rem;
}

.section-heading {
    max-width: 760px;
    margin-bottom: 1.5rem;
}

.section-heading h2 {
    margin-top: .3rem;
    color: var(--title);
    font-size: clamp(1.8rem, 4vw, 2.7rem);
    line-height: 1.15;
}

.section-heading p {
    margin-top: .7rem;
    color: var(--text);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: .9rem;
}

.service-card,
.max-card,
.contact-card,
.qr-card {
    border: 1px solid var(--line);
    background: var(--surface);
    box-shadow: 0 14px 34px rgba(21, 38, 68, .07);
    backdrop-filter: blur(14px);
}

.service-card {
    padding: 1.25rem;
    border-radius: var(--radius-lg);
    transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.service-card:hover {
    transform: translateY(-4px);
    border-color: rgba(22, 131, 255, .28);
    box-shadow: 0 18px 40px rgba(21, 38, 68, .12);
}

.service-icon,
.contact-icon {
    display: grid;
    place-items: center;
    color: var(--accent);
    background: var(--accent-soft);
    border: 1px solid rgba(37, 196, 255, .16);
}

.service-icon {
    width: 46px;
    height: 46px;
    border-radius: 14px;
}

.service-icon i { font-size: 1.5rem; }

.service-card h3 {
    margin-top: .8rem;
    color: var(--title);
    font-size: .95rem;
}

.service-card p {
    margin-top: .45rem;
    font-size: .76rem;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: .4rem;
    margin-top: .85rem;
}

.tags span {
    padding: .28rem .5rem;
    border-radius: 999px;
    color: var(--accent-strong);
    background: var(--accent-soft);
    font-size: .62rem;
    font-weight: 600;
}

.max-card {
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(280px, .6fr);
    overflow: hidden;
    border-radius: var(--radius-xl);
}

.max-card__image-link {
    position: relative;
    min-height: 480px;
    overflow: hidden;
    cursor: zoom-in;
}

.max-card__image-link > img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.max-card__content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 2rem;
}

.max-card__logo {
    width: 72px;
    height: 72px;
    border-radius: 20px;
    object-fit: cover;
    box-shadow: 0 12px 28px rgba(22, 131, 255, .22);
}

.max-card__content h3 {
    margin-top: 1rem;
    color: var(--title);
    font-size: 1.4rem;
}

.max-card__content p {
    margin: .7rem 0 1.2rem;
    font-size: .83rem;
}

.contacts-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(300px, .8fr);
    gap: 1rem;
}

.contact-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: .75rem;
}

.contact-card {
    display: flex;
    align-items: center;
    gap: .8rem;
    min-width: 0;
    padding: .85rem;
    border-radius: var(--radius-md);
    transition: transform var(--transition), border-color var(--transition);
}

.contact-card:hover {
    transform: translateY(-3px);
    border-color: rgba(22, 131, 255, .3);
}

.contact-icon {
    flex: 0 0 40px;
    width: 40px;
    height: 40px;
    border-radius: 12px;
}

.contact-icon i { font-size: 1.25rem; }

.contact-icon--image img {
    width: 22px;
    height: 22px;
    object-fit: contain;
    filter: grayscale(1) brightness(0) invert(75%) sepia(52%) saturate(3148%) hue-rotate(166deg) brightness(103%) contrast(103%);
}

.contact-card span:last-child {
    min-width: 0;
    color: var(--title);
    font-size: .78rem;
    overflow-wrap: anywhere;
}

.contact-card small {
    display: block;
    color: var(--muted);
    font-size: .64rem;
}

.qr-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: .75rem;
}

.qr-card {
    display: block;
    padding: .75rem;
    border-radius: var(--radius-md);
    text-align: center;
    transition: transform var(--transition), border-color var(--transition);
}

.qr-card:hover {
    transform: translateY(-3px);
    border-color: rgba(22, 131, 255, .3);
}

.qr-card img {
    width: 100%;
    aspect-ratio: 1 / 1;
    border-radius: 12px;
    object-fit: cover;
}

.qr-card span {
    display: block;
    margin-top: .55rem;
    color: var(--title);
    font-size: .72rem;
    font-weight: 600;
}

.footer {
    padding: 2rem 0 calc(2rem + env(safe-area-inset-bottom));
    color: var(--muted);
    font-size: .72rem;
    text-align: center;
}

.scrolltop {
    position: fixed;
    right: 1.2rem;
    bottom: -5rem;
    z-index: 90;
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    border-radius: 14px;
    color: var(--white);
    background: linear-gradient(135deg, var(--accent), var(--accent-strong));
    box-shadow: 0 12px 28px rgba(22, 131, 255, .28);
    transition: bottom var(--transition), transform var(--transition);
}

.scrolltop.show-scroll { bottom: 1.2rem; }
.scrolltop:hover { transform: translateY(-3px); }

/* Fancybox */
.fancybox__backdrop {
    background: rgba(3, 7, 13, .92);
    backdrop-filter: blur(10px);
}

.fancybox__caption {
    color: #fff;
    font-family: "Poppins", sans-serif;
}

.fancybox__content {
    overflow: hidden;
    border-radius: 18px;
}

/* PDF export */
body.pdf-export {
    --bg: #ffffff;
    --surface: #ffffff;
    --surface-solid: #ffffff;
    --surface-soft: #f4f7fb;
    --title: #101827;
    --text: #4b5565;
    --muted: #7a8495;
    --line: rgba(16, 24, 39, .10);
}

.pdf-export .site-header,
.pdf-export .footer,
.pdf-export .scrolltop,
.pdf-export .no-print {
    display: none !important;
}

.pdf-export .page {
    width: 210mm !important;
    max-width: 210mm !important;
    padding: 0 !important;
}

.pdf-export .hero {
    min-height: 148mm;
    grid-template-columns: 116mm 94mm;
    border-radius: 0;
    box-shadow: none;
    break-after: page;
}

.pdf-export .hero__content {
    padding: 13mm;
}

.pdf-export .hero__portrait-link {
    min-height: 148mm;
}

.pdf-export .hero__title {
    font-size: 35px;
}

.pdf-export .content-section {
    padding: 12mm 10mm 7mm;
    break-inside: avoid;
}

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

.pdf-export .max-card {
    grid-template-columns: 1.25fr .75fr;
}

.pdf-export .max-card__image-link {
    min-height: 100mm;
}

.pdf-export .contacts-layout {
    grid-template-columns: 1fr;
}

.pdf-export .contact-list {
    grid-template-columns: repeat(2, 1fr);
}

.pdf-export * {
    animation: none !important;
    transition: none !important;
}

/* Responsive */
@media (max-width: 980px) {
    :root { --header-height: 4rem; }

    .site-header {
        position: fixed;
        inset: auto 0 0;
        top: auto;
        border-top: 1px solid var(--line);
        border-bottom: 0;
    }

    .page { padding: 1rem 0 calc(var(--header-height) + 1rem); }
    .container { width: min(calc(100% - 1.2rem), var(--page-max)); }

    .brand__text { display: none; }

    .nav__menu {
        position: fixed;
        left: .6rem;
        right: .6rem;
        bottom: calc(var(--header-height) + .65rem);
        padding: .85rem;
        border: 1px solid var(--line);
        border-radius: 20px;
        background: var(--surface-solid);
        box-shadow: var(--shadow);
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        transform: translateY(18px) scale(.97);
        transition: opacity var(--transition), visibility var(--transition), transform var(--transition);
    }

    .nav__menu.show-menu {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        transform: none;
    }

    .nav__list {
        display: grid;
        grid-template-columns: repeat(4, minmax(0, 1fr));
        gap: .55rem;
    }

    .nav__link {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        min-height: 70px;
        padding: .5rem .2rem;
        border: 1px solid var(--line);
        background: var(--surface-soft);
        text-align: center;
        line-height: 1.15;
    }

    .nav__link i { margin-bottom: .2rem; font-size: 1.25rem; }
    .nav__toggle { display: grid; }

    .hero {
        grid-template-columns: 1fr;
        min-height: auto;
    }

    .hero__portrait-link { min-height: 620px; }
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .max-card { grid-template-columns: 1fr; }
    .contacts-layout { grid-template-columns: 1fr; }
}

@media (max-width: 700px) {
    body { font-size: 14px; }
    .container { width: min(calc(100% - .8rem), var(--page-max)); }

    .hero__content { padding: 1.5rem; }
    .hero__title { letter-spacing: -.08rem; }
    .hero__portrait-link { min-height: 500px; }

    .content-section { padding-top: 3rem; }
    .services-grid,
    .contact-list { grid-template-columns: 1fr; }

    .max-card__image-link { min-height: 360px; }
}

@media (max-width: 460px) {
    .nav__list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .nav__menu { max-height: 70vh; overflow-y: auto; }
    .brand__image,
    .icon-button { width: 38px; height: 38px; }
    .hero__portrait-link { min-height: 410px; }
    .qr-grid { grid-template-columns: 1fr; }
}

/* ==================================================
   V2.1 — FULL-VIEWPORT SECTIONS, CONTACT QR, FANCYBOX
   ================================================== */

/* Компетенции и контакты занимают самостоятельный экран. */
#services,
#contacts {
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: calc(100svh - var(--header-height));
    padding-top: clamp(3rem, 7vh, 5rem);
    padding-bottom: clamp(3rem, 7vh, 5rem);
}

#services .section-heading,
#contacts .section-heading {
    flex: 0 0 auto;
}

#services .services-grid {
    flex: 0 0 auto;
}

/* Карточки компетенций заполняют экран равномернее. */
#services .service-card {
    display: flex;
    flex-direction: column;
    min-height: clamp(250px, 34vh, 330px);
    padding: clamp(1.25rem, 2.2vw, 1.75rem);
}

#services .service-card p {
    flex: 1 1 auto;
}

#services .tags {
    margin-top: auto;
    padding-top: .9rem;
}

/* Контакты — одна широкая сетка без отдельной колонки QR. */
.contacts-layout {
    display: block;
}

.contact-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: .9rem;
}

.contact-card {
    min-height: 76px;
}

.contact-card--qr {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: .8rem;
}

.contact-card__main {
    display: flex;
    align-items: center;
    gap: .8rem;
    min-width: 0;
    flex: 1 1 auto;
}

.contact-card__text {
    min-width: 0;
}

.contact-qr {
    flex: 0 0 54px;
    width: 54px;
    height: 54px;
    padding: 4px;
    overflow: hidden;
    border: 1px solid rgba(37, 196, 255, .34);
    border-radius: 13px;
    background: #ffffff;
    cursor: zoom-in;
    box-shadow: 0 7px 18px rgba(0, 0, 0, .10);
    transition:
        transform var(--transition),
        border-color var(--transition),
        box-shadow var(--transition);
}

.contact-qr:hover {
    border-color: var(--accent);
    transform: scale(1.06);
    box-shadow: 0 0 20px rgba(37, 196, 255, .20);
}

.contact-qr img {
    width: 100%;
    height: 100%;
    border-radius: 8px;
    object-fit: cover;
}

/* Не используем прежнюю отдельную QR-сетку. */
.qr-grid {
    display: none;
}

/* Кнопка темы: и луна, и солнце всегда имеют заданный размер. */
#theme-button i {
    display: block;
    width: 1.35rem;
    height: 1.35rem;
    font-size: 1.35rem;
    line-height: 1.35rem;
}

/* Панель Fancybox и кнопка закрытия должны быть видимы всегда. */
.fancybox__container,
.fancybox__toolbar,
.fancybox__nav,
.fancybox__footer {
    z-index: 100000;
}

.fancybox__toolbar {
    opacity: 1 !important;
    visibility: visible !important;
    pointer-events: auto !important;
}

.fancybox__container .f-button {
    --f-button-color: #ffffff;
    --f-button-bg: rgba(5, 10, 19, .66);
    --f-button-hover-color: #ffffff;
    --f-button-hover-bg: rgba(37, 196, 255, .82);
    --f-button-border-radius: 12px;

    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, .16);
    backdrop-filter: blur(10px);
}

.fancybox__container .is-close-btn,
.fancybox__container [data-fancybox-close] {
    display: flex !important;
    opacity: 1 !important;
    visibility: visible !important;
    pointer-events: auto !important;
}

.fancybox__nav .f-button {
    width: 48px;
    height: 48px;
}

/* PDF: полноэкранные правила интерфейса не должны растягивать страницы PDF. */
.pdf-export #services,
.pdf-export #contacts {
    display: block;
    min-height: 0;
    padding: 12mm 10mm 7mm;
}

.pdf-export #services .service-card {
    min-height: 0;
}

.pdf-export .contact-list {
    grid-template-columns: repeat(2, 1fr);
}

@media (max-width: 980px) {
    #services,
    #contacts {
        min-height: auto;
        padding-top: 3.5rem;
        padding-bottom: 2rem;
    }

    #services .service-card {
        min-height: 235px;
    }
}

@media (max-width: 700px) {
    .contact-list {
        grid-template-columns: 1fr;
    }

    #services .service-card {
        min-height: auto;
    }
}

@media (max-width: 390px) {
    .contact-qr {
        flex-basis: 48px;
        width: 48px;
        height: 48px;
    }
}