:root {
    --ink: #17384b;
    --muted: #647b8b;
    --primary: #3088ca;
    --primary-dark: #17679f;
    --accent: #5ec7e8;
    --accent-blue: #78b7e8;
    --pink: #ff94aa;
    --surface: #ffffff;
    --tint: #eef7fd;
    --dark: #082f4a;
    --line: rgba(23, 56, 75, .12);
    --shadow: 0 24px 70px rgba(24, 93, 139, .14);
    --radius-xl: 8px;
    --radius-lg: 6px;
    --radius-md: 4px;
    --container: 1180px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--ink);
    background: var(--surface);
    font-family: Inter, Manrope, "Segoe UI", Arial, sans-serif;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

    body.modal-open {
        overflow: hidden;
    }

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

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

button, input, select {
    font: inherit;
}

button {
    cursor: pointer;
}

.container {
    width: min(var(--container), calc(100% - 40px));
    margin-inline: auto;
}

.section {
    position: relative;
    padding: 110px 0;
}

.section-light {
    background: #fff;
}

.section-tint {
    background: var(--tint);
}

.section-dark {
    background: var(--dark);
    color: #fff;
    overflow: hidden;
}

    .section-dark::before {
        content: "";
        position: absolute;
        width: 480px;
        height: 480px;
        border-radius: 50%;
        background: rgba(94,199,232,.12);
        filter: blur(12px);
        left: -180px;
        top: -160px;
    }

    .section-dark::after {
        content: "";
        position: absolute;
        width: 420px;
        height: 420px;
        border-radius: 50%;
        background: rgba(120,183,232,.11);
        right: -160px;
        bottom: -160px;
    }

.section > .container {
    position: relative;
    z-index: 1;
}

.page-loader {
    position: fixed;
    inset: 0;
    display: grid;
    place-content: center;
    gap: 18px;
    text-align: center;
    background: #f5faff;
    z-index: 9999;
    transition: opacity .45s ease, visibility .45s ease;
}

    .page-loader.hidden {
        opacity: 0;
        visibility: hidden;
    }

    .page-loader p {
        margin: 0;
        color: var(--muted);
        font-size: 14px;
    }

.loader-mark {
    display: flex;
    justify-content: center;
    align-items: flex-end;
    gap: 7px;
    height: 52px;
}

    .loader-mark span {
        width: 12px;
        border-radius: 999px;
        background: linear-gradient(180deg, var(--accent), var(--primary));
        animation: pulsebars .9s ease-in-out infinite alternate;
    }

        .loader-mark span:nth-child(1) {
            height: 24px;
        }

        .loader-mark span:nth-child(2) {
            height: 48px;
            animation-delay: .15s;
        }

        .loader-mark span:nth-child(3) {
            height: 34px;
            animation-delay: .3s;
        }

@keyframes pulsebars {
    to {
        transform: translateY(-8px);
        opacity: .55;
    }
}

.site-header {
    position: fixed;
    inset: 0 0 auto;
    z-index: 1000;
    color: #fff;
    transition: background .25s ease, box-shadow .25s ease, color .25s ease;
}

    .site-header.scrolled {
        color: var(--ink);
        background: rgba(255,255,255,.93);
        box-shadow: 0 12px 40px rgba(8,47,74,.1);
        backdrop-filter: blur(18px);
    }

.nav-wrap {
    min-height: 84px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    min-width: 230px;
}

    .brand img {
        width: 48px;
        height: 48px;
    }

    .brand span {
        display: flex;
        flex-direction: column;
        line-height: 1.2;
        max-width: 250px;
    }

    .brand strong {
        letter-spacing: .07em;
        font-size: 14px;
    }

    .brand small {
        opacity: .72;
        font-size: 11px;
        margin-top: 4px;
    }

.main-nav {
    display: flex;
    align-items: center;
    gap: 28px;
    font-weight: 650;
    font-size: 14px;
}

    .main-nav > a:not(.nav-cta) {
        position: relative;
        padding: 29px 0;
    }

        .main-nav > a:not(.nav-cta)::after {
            content: "";
            position: absolute;
            height: 2px;
            left: 0;
            right: 100%;
            bottom: 22px;
            background: var(--accent);
            transition: right .25s ease;
        }

    .main-nav > a:hover::after {
        right: 0;
    }

.nav-cta {
    padding: 12px 18px;
    border: 1px solid rgba(255,255,255,.32);
    border-radius: 999px;
}

.scrolled .nav-cta {
    border-color: var(--line);
    background: var(--primary);
    color: #fff;
}

.nav-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,.25);
    background: transparent;
    padding: 10px;
}

    .nav-toggle span {
        display: block;
        height: 2px;
        margin: 5px 0;
        background: currentColor;
        transition: .25s;
    }

.hero {
    position: relative;
    min-height: 100vh;
    overflow: hidden;
    color: #fff;
    background: linear-gradient(135deg, #082f4a 0%, #17679f 52%, #3088ca 100%);
    padding: 145px 0 46px;
}

.hero-grid {
    position: absolute;
    inset: 0;
    opacity: .12;
    background-image: linear-gradient(rgba(255,255,255,.16) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.16) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: linear-gradient(to bottom, black, transparent 85%);
}

.hero-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(4px);
}

.hero-orb-one {
    width: 460px;
    height: 460px;
    right: -120px;
    top: -70px;
    background: rgba(94,199,232,.24);
}

.hero-orb-two {
    width: 390px;
    height: 390px;
    left: -170px;
    bottom: 70px;
    background: rgba(120,183,232,.18);
}

.hero-layout {
    position: relative;
    display: grid;
    grid-template-columns: 1.22fr .78fr;
    gap: 70px;
    align-items: center;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border: 1px solid rgba(255,255,255,.2);
    border-radius: 999px;
    background: rgba(255,255,255,.08);
    font-size: 13px;
    letter-spacing: .02em;
}

    .eyebrow span {
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background: var(--accent);
        box-shadow: 0 0 0 6px rgba(94,199,232,.12);
    }

.hero h1 {
    max-width: 800px;
    margin: 26px 0 22px;
    font-size: clamp(42px, 5.4vw, 72px);
    line-height: 1.02;
    letter-spacing: -.045em;
}

    .hero h1 em {
        color: #d7f2ff;
        font-style: normal;
    }

.hero-subtitle {
    max-width: 690px;
    margin: 0 0 30px;
    color: rgba(255,255,255,.78);
    font-size: 18px;
}

.hero-meta {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 28px;
}

.meta-card {
    min-height: 78px;
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 15px;
    border: 1px solid rgba(255,255,255,.14);
    background: rgba(255,255,255,.07);
    border-radius: 18px;
    backdrop-filter: blur(8px);
}

    .meta-card svg {
        width: 25px;
        height: 25px;
        fill: none;
        stroke: #d7f2ff;
        stroke-width: 1.7;
        flex: 0 0 auto;
    }

    .meta-card span {
        display: flex;
        flex-direction: column;
    }

    .meta-card strong {
        font-size: 14px;
    }

    .meta-card small {
        color: rgba(255,255,255,.62);
        font-size: 11px;
        margin-top: 3px;
    }

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 52px;
    padding: 13px 24px;
    border: 0;
    border-radius: 14px;
    font-weight: 750;
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}

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

.btn-primary {
    color: #0b3552;
    background: linear-gradient(135deg, #d7f2ff, #85d5f2);
    box-shadow: 0 15px 35px rgba(94,199,232,.22);
}

.btn-secondary {
    color: #fff;
    background: var(--primary);
    box-shadow: 0 14px 30px rgba(48,136,202,.18);
}

.btn-ghost {
    color: #fff;
    border: 1px solid rgba(255,255,255,.26);
    background: rgba(255,255,255,.07);
}

.btn-full {
    width: 100%;
}

.hero-panel {
    padding: 24px;
    border: 1px solid rgba(255,255,255,.18);
    border-radius: 30px;
    background: rgba(255,255,255,.10);
    backdrop-filter: blur(18px);
    box-shadow: 0 40px 90px rgba(0,0,0,.22);
}

.hero-illustration {
    display: grid;
    place-items: center;
    overflow: hidden;
    border-radius: 11px;
    background: radial-gradient(circle at 50% 40%, rgba(255,255,255,.46), transparent 65%);
}

.countdown-label {
    margin: 18px 0 10px;
    text-align: center;
    color: rgba(255,255,255,.63);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: .13em;
}

.countdown {
    display: grid;
    grid-template-columns: repeat(4,1fr);
    gap: 7px;
}

    .countdown > div {
        padding: 10px 5px;
        border-radius: 14px;
        text-align: center;
        background: rgba(5,39,61,.35);
    }

    .countdown strong {
        display: block;
        font-size: 26px;
        line-height: 1;
    }

    .countdown span {
        color: rgba(255,255,255,.57);
        font-size: 10px;
    }

.capacity-note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 15px;
    color: rgba(255,255,255,.73);
    font-size: 12px;
}

    .capacity-note span {
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background: #ffbf69;
        box-shadow: 0 0 0 5px rgba(255,191,105,.12);
    }

.hero-partners {
    position: relative;
    margin-top: 52px;
}

    .hero-partners > p {
        margin: 0 0 14px;
        color: rgba(255,255,255,.48);
        text-transform: uppercase;
        font-size: 11px;
        letter-spacing: .14em;
    }

.partner-row {
    display: grid;
    grid-template-columns: repeat(7,1fr);
    gap: 9px;
}

    .partner-row img {
        width: 100%;
        height: 100px;
        padding: 10px;
        object-fit: contain;
        border: 1px solid rgba(255,255,255,.10);
        border-radius: 14px;
        background: #FFF;
    }

.section-kicker {
    display: inline-block;
    margin-bottom: 16px;
    color: var(--primary);
    font-size: 12px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: .16em;
}

.section-dark .section-kicker {
    color: #8ed9f4;
}

h2 {
    margin: 0;
    font-size: clamp(34px, 4vw, 52px);
    line-height: 1.08;
    letter-spacing: -.035em;
}

.section-heading > p, .center-heading > p, .section-title-row > p {
    color: var(--muted);
    font-size: 17px;
}

.split-layout {
    display: grid;
    grid-template-columns: .92fr 1.08fr;
    gap: 70px;
    align-items: start;
}

.section-heading > p {
    max-width: 600px;
    margin: 24px 0 32px;
}

.stat-row {
    display: grid;
    grid-template-columns: repeat(3,1fr);
    gap: 12px;
}

    .stat-row > div {
        padding: 18px;
        border: 1px solid var(--line);
        border-radius: 18px;
        background: #fff;
    }

    .stat-row strong {
        display: block;
        color: var(--primary);
        font-size: 32px;
        line-height: 1;
    }

    .stat-row span {
        color: var(--muted);
        font-size: 12px;
    }

.topics-card {
    padding: 32px;
    border-radius: var(--radius-xl);
    background: var(--dark);
    color: #fff;
    box-shadow: var(--shadow);
}

    .topics-card h3 {
        margin: 0 0 20px;
        font-size: 24px;
    }

.topic-list {
    display: grid;
    gap: 10px;
    margin: 0;
    padding: 0;
    list-style: none;
}

    .topic-list li {
        display: flex;
        align-items: center;
        gap: 14px;
        padding: 13px 0;
        border-bottom: 1px solid rgba(255,255,255,.1);
        color: rgba(255,255,255,.78);
    }

        .topic-list li:last-child {
            border-bottom: 0;
        }

    .topic-list span {
        display: grid;
        place-items: center;
        min-width: 38px;
        height: 38px;
        border-radius: 12px;
        background: rgba(94,199,232,.14);
        color: #bde9fb;
        font-size: 12px;
        font-weight: 800;
    }

.section-title-row {
    display: grid;
    grid-template-columns: 1.25fr .75fr;
    gap: 70px;
    align-items: end;
    margin-bottom: 44px;
}

    .section-title-row > p {
        margin: 0;
    }

    .section-title-row.light > p {
        color: rgba(255,255,255,.62);
    }

/* =========================
   Организационный комитет
   ========================= */

.committee-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
}

.person-card {
    position: relative;
    display: grid;
    grid-template-columns: 138px minmax(0, 1fr);
    gap: 24px;
    align-items: center;
    min-height: 190px;
    padding: 20px;
    overflow: hidden;
    border: 1px solid rgba(23, 56, 75, .09);
    border-radius: 24px;
    background: rgba(255, 255, 255, .88);
    box-shadow: 0 16px 45px rgba(24, 93, 139, .08);
    transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
}

    .person-card::before {
        content: "";
        position: absolute;
        top: -70px;
        right: -70px;
        width: 160px;
        height: 160px;
        border-radius: 50%;
        background: rgba(48, 136, 202, .07);
        pointer-events: none;
    }

    .person-card:hover {
        transform: translateY(-5px);
        border-color: rgba(48, 136, 202, .24);
        box-shadow: 0 24px 60px rgba(24, 93, 139, .14);
    }

    /* Если количество карточек нечётное,
   последняя карточка располагается по центру */
    .person-card:last-child:nth-child(odd) {
        grid-column: 1 / -1;
        width: calc(50% - 10px);
        justify-self: center;
    }

.person-photo {
    position: relative;
    width: 138px;
    height: 158px;
    overflow: hidden;
    border-radius: 19px;
    background: linear-gradient( 145deg, var(--primary-dark), var(--primary) );
    box-shadow: 0 14px 30px rgba(23, 103, 159, .18);
}

    .person-photo::after {
        content: "";
        position: absolute;
        inset: 0;
        border: 1px solid rgba(255, 255, 255, .16);
        border-radius: inherit;
        pointer-events: none;
    }

    .person-photo img {
        width: 100%;
        height: 100%;
        display: block;
        object-fit: cover;
        object-position: center top;
        transition: transform .5s ease;
    }

.person-card:hover .person-photo img {
    transform: scale(1.045);
}

.person-body {
    position: relative;
    z-index: 1;
    min-width: 0;
}

    .person-body h3 {
        margin: 0 0 11px;
        color: var(--ink);
        font-size: 21px;
        font-weight: 750;
        line-height: 1.22;
        letter-spacing: -.02em;
    }

.person-title {
    color: var(--muted);
    font-size: 13px;
    line-height: 1.65;
}

    .person-title p {
        margin: 0 0 7px;
    }

        .person-title p:last-child {
            margin-bottom: 0;
        }

    .person-title strong,
    .person-title b {
        color: var(--primary-dark);
        font-weight: 700;
    }

    .person-title a {
        color: var(--primary);
        text-decoration: underline;
        text-decoration-color: rgba(48, 136, 202, .3);
        text-underline-offset: 3px;
    }

    .person-title ul,
    .person-title ol {
        margin: 8px 0 0;
        padding-left: 19px;
    }

    .person-title li {
        margin-bottom: 4px;
    }

@media (max-width: 860px) {
    .committee-grid {
        grid-template-columns: 1fr;
    }

    .person-card:last-child:nth-child(odd) {
        grid-column: auto;
        width: 100%;
    }
}

@media (max-width: 600px) {
    .committee-grid {
        gap: 15px;
    }

    .person-card {
        grid-template-columns: 96px minmax(0, 1fr);
        gap: 17px;
        min-height: 142px;
        padding: 16px;
        border-radius: 20px;
    }

    .person-photo {
        width: 96px;
        height: 116px;
        border-radius: 15px;
    }

    .person-body h3 {
        margin-bottom: 8px;
        font-size: 17px;
    }

    .person-title {
        font-size: 12px;
        line-height: 1.5;
    }
}


/* =========================
   Международные лекторы
   ========================= */

.speaker-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
}

.speaker-card {
    position: relative;
    display: grid;
    grid-template-columns: 210px minmax(0, 1fr);
    min-height: 330px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, .12);
    border-radius: 26px;
    background: rgba(255, 255, 255, .07);
    box-shadow: 0 22px 60px rgba(0, 0, 0, .16);
    backdrop-filter: blur(14px);
    transition: transform .3s ease, border-color .3s ease, background .3s ease, box-shadow .3s ease;
}

    .speaker-card:hover {
        transform: translateY(-6px);
        border-color: rgba(94, 199, 232, .35);
        background: rgba(255, 255, 255, .095);
        box-shadow: 0 30px 75px rgba(0, 0, 0, .24);
    }

.speaker-photo {
    position: relative;
    min-height: 100%;
    overflow: hidden;
    background: linear-gradient( 145deg, var(--primary-dark), var(--primary) );
}

    .speaker-photo img {
        width: 100%;
        height: 100%;
        min-height: 330px;
        object-fit: cover;
        object-position: center top;
        transition: transform .55s ease, filter .55s ease;
    }

.speaker-card:hover .speaker-photo img {
    transform: scale(1.045);
}

.speaker-photo::after {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: linear-gradient( to top, rgba(8, 47, 74, .88) 0%, rgba(8, 47, 74, .18) 42%, transparent 70% );
}

.speaker-photo span {
    position: absolute;
    z-index: 2;
    left: 16px;
    right: 16px;
    bottom: 16px;
    display: inline-flex;
    align-items: center;
    width: fit-content;
    max-width: calc(100% - 32px);
    padding: 7px 11px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, .18);
    border-radius: 999px;
    color: #fff;
    background: rgba(8, 47, 74, .56);
    font-size: 11px;
    font-weight: 650;
    line-height: 1.35;
    text-overflow: ellipsis;
    white-space: nowrap;
    backdrop-filter: blur(10px);
}

    .speaker-photo span::before {
        content: "";
        width: 7px;
        height: 7px;
        margin-right: 7px;
        flex: 0 0 auto;
        border-radius: 50%;
        background: var(--accent);
        box-shadow: 0 0 0 4px rgba(94, 199, 232, .14);
    }

.speaker-body {
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-width: 0;
    padding: 30px;
}

    .speaker-body h3 {
        margin: 0 0 12px;
        color: #fff;
        font-size: clamp(22px, 2vw, 28px);
        font-weight: 750;
        line-height: 1.15;
        letter-spacing: -.025em;
    }

.speaker-role {
    margin: 0 0 18px;
    padding-bottom: 18px;
    border-bottom: 1px solid rgba(255, 255, 255, .1);
    color: var(--accent);
    font-size: 13px;
    font-weight: 650;
    line-height: 1.55;
}

.speaker-body > p:not(.speaker-role),
.speaker-body > div,
.speaker-body > ul,
.speaker-body > ol {
    margin-top: 0;
    margin-bottom: 14px;
    color: rgba(255, 255, 255, .66);
    font-size: 13px;
    line-height: 1.65;
}

.speaker-body ul,
.speaker-body ol {
    padding-left: 20px;
}

.speaker-body li {
    margin-bottom: 6px;
}

.speaker-body a {
    color: var(--accent);
    text-decoration: underline;
    text-decoration-color: rgba(94, 199, 232, .35);
    text-underline-offset: 3px;
}

    .speaker-body a:hover {
        text-decoration-color: currentColor;
    }

.speaker-body > :last-child {
    margin-bottom: 0;
}

@media (max-width: 1050px) {
    .speaker-card {
        grid-template-columns: 175px minmax(0, 1fr);
    }

    .speaker-photo img {
        min-height: 350px;
    }

    .speaker-body {
        padding: 24px;
    }
}

@media (max-width: 860px) {
    .speaker-grid {
        grid-template-columns: 1fr;
    }

    .speaker-card {
        grid-template-columns: 230px minmax(0, 1fr);
        min-height: 340px;
    }

    .speaker-photo img {
        min-height: 340px;
    }
}

@media (max-width: 600px) {
    .speaker-grid {
        gap: 18px;
    }

    .speaker-card {
        display: block;
        min-height: auto;
        border-radius: 22px;
    }

    .speaker-photo {
        height: 320px;
        min-height: 0;
    }

        .speaker-photo img {
            height: 100%;
            min-height: 0;
        }

    .speaker-body {
        padding: 24px 20px;
    }

        .speaker-body h3 {
            font-size: 23px;
        }

    .speaker-role {
        margin-bottom: 15px;
        padding-bottom: 15px;
    }
}

.center-heading {
    max-width: 760px;
    margin: 0 auto 46px;
    text-align: center;
}

    .center-heading > p {
        margin: 18px auto 0;
    }

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(2,1fr);
    gap: 24px;
    max-width: 940px;
    margin: auto;
}

.pricing-card {
    position: relative;
    padding: 34px;
    border: 1px solid var(--line);
    border-radius: var(--radius-xl);
    background: #fff;
    box-shadow: 0 18px 55px rgba(24,93,139,.08);
}

    .pricing-card.featured {
        border-color: rgba(48,136,202,.28);
        box-shadow: 0 24px 70px rgba(24,93,139,.13);
    }

.pricing-badge {
    display: inline-flex;
    padding: 7px 11px;
    border-radius: 999px;
    background: rgba(94,199,232,.18);
    color: var(--primary-dark);
    font-size: 11px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: .08em;
}

    .pricing-badge.muted {
        background: rgba(120,183,232,.13);
        color: #3f78ad;
    }

.pricing-card h3 {
    margin: 18px 0 6px;
    font-size: 28px;
}

.price {
    display: flex;
    flex-direction: column;
    padding-bottom: 22px;
    border-bottom: 1px solid var(--line);
}

    .price strong {
        font-size: 34px;
        line-height: 1.2;
    }

    .price span {
        color: var(--muted);
        font-size: 12px;
    }

.pricing-card ul {
    display: grid;
    gap: 11px;
    margin: 24px 0 28px;
    padding: 0;
    list-style: none;
}

.pricing-card li {
    position: relative;
    padding-left: 28px;
    color: var(--muted);
}

    .pricing-card li::before {
        content: "✓";
        position: absolute;
        left: 0;
        top: 1px;
        display: grid;
        place-items: center;
        width: 19px;
        height: 19px;
        border-radius: 50%;
        background: rgba(94,199,232,.19);
        color: var(--primary);
        font-size: 11px;
        font-weight: 900;
    }

.registration-layout {
    display: grid;
    grid-template-columns: .78fr 1.22fr;
    gap: 54px;
    align-items: start;
}

.registration-copy {
    position: sticky;
    top: 120px;
}

    .registration-copy > p {
        color: var(--muted);
        font-size: 16px;
    }

.notice-card {
    display: flex;
    gap: 14px;
    margin-top: 28px;
    padding: 18px;
    border: 1px solid rgba(48,136,202,.15);
    border-radius: 18px;
    background: rgba(255,255,255,.7);
}

    .notice-card svg {
        width: 24px;
        height: 24px;
        flex: 0 0 auto;
        fill: none;
        stroke: var(--primary);
        stroke-width: 1.7;
    }

    .notice-card strong {
        display: block;
    }

    .notice-card p {
        margin: 4px 0 0;
        color: var(--muted);
        font-size: 12px;
    }

.payment-mini {
    margin-top: 16px;
    padding: 18px;
    border-radius: 18px;
    color: #fff;
    background: var(--dark);
}

    .payment-mini span {
        display: block;
        color: #8ed9f4;
        font-size: 11px;
        text-transform: uppercase;
        letter-spacing: .1em;
    }

    .payment-mini strong {
        display: block;
        margin-top: 6px;
        font-size: 14px;
    }

.registration-form {
    position: relative;
    padding: 36px;
    border-radius: var(--radius-xl);
    background: #fff;
    box-shadow: var(--shadow);
}

.form-progress {
    position: absolute;
    inset: 0 0 auto;
    height: 5px;
    overflow: hidden;
    border-radius: 32px 32px 0 0;
    background: #e5eef5;
}

    .form-progress span {
        display: block;
        height: 100%;
        background: linear-gradient(90deg,var(--primary),var(--accent));
        transition: width .25s ease;
    }

.form-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    margin-bottom: 28px;
}

    .form-head small {
        color: var(--primary);
        font-weight: 750;
    }

    .form-head h3 {
        margin: 2px 0 0;
        font-size: 28px;
    }

.secure-pill {
    padding: 7px 10px;
    border-radius: 999px;
    background: var(--tint);
    color: var(--primary-dark);
    font-size: 10px;
    font-weight: 750;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2,1fr);
    gap: 16px;
}

.field {
    display: flex;
    flex-direction: column;
    gap: 7px;
}

.field-wide {
    grid-column: 1 / -1;
}

.field > span, .participation-choice legend {
    color: #405a6a;
    font-size: 12px;
    font-weight: 750;
}

.field input, .field select {
    width: 100%;
    min-height: 49px;
    padding: 11px 13px;
    border: 1px solid #d7e5ee;
    border-radius: 12px;
    background: #fbfdff;
    color: var(--ink);
    outline: 0;
    transition: border .2s, box-shadow .2s, background .2s;
}

    .field input:focus, .field select:focus {
        border-color: var(--primary);
        box-shadow: 0 0 0 4px rgba(48,136,202,.10);
        background: #fff;
    }

.field.invalid input, .field.invalid select {
    border-color: #d84d63;
    box-shadow: 0 0 0 4px rgba(216,77,99,.08);
}

.participation-choice {
    display: grid;
    grid-template-columns: repeat(2,1fr);
    gap: 12px;
    margin: 24px 0 18px;
    padding: 0;
    border: 0;
}

    .participation-choice legend {
        grid-column: 1 / -1;
        margin-bottom: 6px;
    }

.choice-card {
    position: relative;
    cursor: pointer;
}

    .choice-card input {
        position: absolute;
        opacity: 0;
        pointer-events: none;
    }

    .choice-card span {
        display: flex;
        flex-direction: column;
        min-height: 76px;
        justify-content: center;
        padding: 14px 16px;
        border: 1px solid #d7e5ee;
        border-radius: 15px;
        background: #fbfdff;
        transition: .2s;
    }

    .choice-card strong {
        font-size: 15px;
    }

    .choice-card small {
        color: var(--muted);
        font-size: 11px;
    }

    .choice-card input:checked + span {
        border-color: var(--primary);
        background: rgba(48,136,202,.06);
        box-shadow: 0 0 0 4px rgba(48,136,202,.08);
    }

.consent {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin: 0 0 18px;
    color: var(--muted);
    font-size: 12px;
    cursor: pointer;
}

    .consent input {
        margin-top: 3px;
        accent-color: var(--primary);
    }

.form-error {
    min-height: 20px;
    margin: 0 0 10px;
    color: #c83d54;
    font-size: 12px;
}

.submit-btn.loading {
    pointer-events: none;
    opacity: .8;
}

.submit-btn i {
    display: none;
    width: 18px;
    height: 18px;
    margin-left: 10px;
    border: 2px solid rgba(11,53,82,.25);
    border-top-color: #0b3552;
    border-radius: 50%;
    animation: spin .7s linear infinite;
}

.submit-btn.loading i {
    display: block;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.stream-section {
    padding-block: 100px;
}

.stream-layout {
    display: grid;
    grid-template-columns: .75fr 1.25fr;
    gap: 60px;
    align-items: center;
}

    .stream-layout p {
        color: rgba(255,255,255,.62);
    }

.stream-info {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 24px;
    color: #fff;
    font-size: 13px;
}

.live-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #ff6078;
    box-shadow: 0 0 0 7px rgba(255,96,120,.12);
}

.video-placeholder {
    aspect-ratio: 16/9;
    display: grid;
    place-items: center;
    align-content: center;
    text-align: center;
    border: 1px solid rgba(255,255,255,.13);
    border-radius: 28px;
    background: radial-gradient(circle at 50% 40%, rgba(94,199,232,.16), transparent 50%), rgba(255,255,255,.06);
    box-shadow: 0 30px 80px rgba(0,0,0,.22);
}

.play-button {
    display: grid;
    place-items: center;
    width: 74px;
    height: 74px;
    margin-bottom: 18px;
    border-radius: 50%;
    background: #fff;
    box-shadow: 0 16px 40px rgba(0,0,0,.22);
}

    .play-button span {
        margin-left: 5px;
        width: 0;
        height: 0;
        border-top: 10px solid transparent;
        border-bottom: 10px solid transparent;
        border-left: 16px solid var(--primary);
    }

.video-placeholder strong {
    font-size: 22px;
}

.video-placeholder small {
    color: rgba(255,255,255,.55);
}

/* =========================
   Спонсоры и партнёры
   ========================= */

.sponsors-heading {
    margin-top: 82px;
}

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

.sponsor-grid-general {
    grid-template-columns: minmax(300px, 480px);
    justify-content: center;
}

.sponsor-card {
    position: relative;
    display: grid;
    place-items: center;
    min-width: 0;
    min-height: 166px;
    padding: 26px;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 22px;
    background: var(--surface);
    box-shadow: 0 14px 42px rgba(24, 93, 139, .07);
    transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
}

    .sponsor-card::before {
        content: "";
        position: absolute;
        top: -80px;
        right: -80px;
        width: 170px;
        height: 170px;
        border-radius: 50%;
        background: rgba(48, 136, 202, .045);
        pointer-events: none;
    }

    .sponsor-card:hover {
        transform: translateY(-5px);
        border-color: rgba(48, 136, 202, .22);
        box-shadow: 0 22px 58px rgba(24, 93, 139, .13);
    }

.sponsor-card-general {
    min-height: 220px;
    padding: 38px 52px;
    border-color: rgba(48, 136, 202, .18);
    box-shadow: 0 22px 65px rgba(24, 93, 139, .11);
}

.sponsor-logo {
    position: relative;
    z-index: 1;
    display: grid;
    place-items: center;
    width: 100%;
    height: 94px;
}

.sponsor-card-general .sponsor-logo {
    height: 120px;
}

.sponsor-logo img {
    display: block;
    width: auto;
    height: auto;
    object-fit: contain;
    object-position: center;
    transition: transform .35s ease, filter .35s ease;
}

.sponsor-card:hover .sponsor-logo img {
    transform: scale(1.035);
}

/*
   Обычный горизонтальный логотип.
   Ограничиваем прежде всего по высоте,
   чтобы он не выглядел слишком маленьким.
*/
.logo-wide .sponsor-logo img {
    max-width: 88%;
    max-height: 58px;
}

.sponsor-card-general.logo-wide .sponsor-logo img {
    max-width: 86%;
    max-height: 82px;
}

/*
   Квадратный или почти квадратный логотип.
   Он получает меньший размер, чтобы визуально
   не доминировать над горизонтальными логотипами.
*/
.logo-square .sponsor-logo img {
    max-width: 140px;
    max-height: 140px;
}

.sponsor-card-general.logo-square .sponsor-logo img {
    max-width: 150px;
    max-height: 150px;
}

/*
   Вертикальный логотип.
*/
.logo-tall .sponsor-logo img {
    max-width: 64px;
    max-height: 78px;
}

.sponsor-card-general.logo-tall .sponsor-logo img {
    max-width: 82px;
    max-height: 100px;
}

/*
   Для файлов, внутри которых много пустого
   прозрачного пространства.
*/
.logo-compact .sponsor-logo img {
    max-width: 96%;
    max-height: 72px;
}

.sponsor-card-general.logo-compact .sponsor-logo img {
    max-width: 94%;
    max-height: 96px;
}

@media (max-width: 1050px) {
    .sponsor-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (max-width: 860px) {
    .sponsor-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .sponsor-grid-general {
        grid-template-columns: minmax(280px, 440px);
    }

    .sponsors-heading {
        margin-top: 68px;
    }
}

@media (max-width: 600px) {
    .sponsor-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 12px;
    }

    .sponsor-grid-general {
        grid-template-columns: 1fr;
    }

    .sponsor-card {
        min-height: 126px;
        padding: 18px;
        border-radius: 18px;
    }

    .sponsor-card-general {
        min-height: 170px;
        padding: 26px;
    }

    .sponsor-logo {
        height: 72px;
    }

    .sponsor-card-general .sponsor-logo {
        height: 96px;
    }

    .logo-wide .sponsor-logo img {
        max-width: 92%;
        max-height: 46px;
    }

    .logo-square .sponsor-logo img {
        max-width: 78px;
        max-height: 78px;
    }

    .logo-tall .sponsor-logo img {
        max-width: 50px;
        max-height: 64px;
    }

    .logo-compact .sponsor-logo img {
        max-width: 98%;
        max-height: 58px;
    }

    .sponsors-heading {
        margin-top: 54px;
    }
}



.gallery-placeholder {
    min-height: 340px;
    display: grid;
    place-items: center;
    align-content: center;
    text-align: center;
    border: 1px dashed rgba(48,136,202,.3);
    border-radius: var(--radius-xl);
    background: rgba(255,255,255,.6);
}

.gallery-icon {
    position: relative;
    width: 74px;
    height: 62px;
    border-radius: 15px;
    background: linear-gradient(145deg,var(--primary),var(--accent));
}

    .gallery-icon::before {
        content: "";
        position: absolute;
        left: 12px;
        top: 12px;
        width: 13px;
        height: 13px;
        border-radius: 50%;
        background: rgba(255,255,255,.9);
    }

    .gallery-icon::after {
        content: "";
        position: absolute;
        left: 10px;
        right: 10px;
        bottom: 10px;
        height: 26px;
        clip-path: polygon(0 100%, 35% 25%, 58% 72%, 75% 40%, 100% 100%);
        background: rgba(255,255,255,.88);
    }

.gallery-placeholder h3 {
    margin: 22px 0 4px;
    font-size: 24px;
}

.gallery-placeholder p {
    margin: 0;
    color: var(--muted);
}

.contact-layout {
    display: grid;
    grid-template-columns: .8fr 1.2fr;
    gap: 26px;
}

.contact-card {
    padding: 38px;
    border-radius: var(--radius-xl);
    background: var(--tint);
}

.contact-list {
    display: grid;
    gap: 13px;
    margin: 28px 0;
}

    .contact-list > a, .contact-list > div {
        display: flex;
        gap: 14px;
        padding: 14px;
        border-radius: 16px;
        background: #fff;
    }

.contact-icon {
    display: grid;
    place-items: center;
    width: 42px;
    height: 42px;
    flex: 0 0 auto;
    border-radius: 12px;
    background: rgba(48,136,202,.1);
    color: var(--primary);
    font-weight: 900;
}

.contact-list div > div {
    display: flex;
    flex-direction: column;
}

.contact-list small {
    color: var(--muted);
}

.contact-list strong {
    font-size: 15px;
}

.contact-list p {
    margin: 1px 0 0;
    color: var(--muted);
    font-size: 12px;
}

.map-wrap {
    min-height: 520px;
    overflow: hidden;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
}

    .map-wrap iframe {
        width: 100%;
        height: 100%;
        min-height: 520px;
        border: 0;
    }

.site-footer {
    padding: 46px 0 20px;
    color: rgba(255,255,255,.76);
    background: #051f33;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr .8fr .4fr;
    gap: 30px;
    align-items: center;
}

.footer-brand {
    display: flex;
    gap: 14px;
    align-items: center;
}

    .footer-brand img {
        width: 72px;
    }


.footer-grid p {
    color: #fff;
    margin: 4px 0 0;
    font-size: 12px;
    max-width: 300px;
}

.footer-links {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    margin-top: 32px;
    padding-top: 18px;
    border-top: 1px solid rgba(255,255,255,.1);
    color: rgba(255,255,255,.42);
    font-size: 11px;
}

.modal {
    position: fixed;
    inset: 0;
    z-index: 3000;
    display: grid;
    place-items: center;
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    transition: .25s;
}

    .modal.open {
        opacity: 1;
        visibility: visible;
    }

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(4,28,45,.72);
    backdrop-filter: blur(8px);
}

.modal-card {
    position: relative;
    width: min(560px, 100%);
    max-height: calc(100vh - 40px);
    overflow: auto;
    padding: 36px;
    border-radius: 28px;
    background: #fff;
    box-shadow: 0 35px 100px rgba(0,0,0,.25);
}

.modal-close {
    position: absolute;
    right: 18px;
    top: 15px;
    width: 38px;
    height: 38px;
    border: 0;
    border-radius: 50%;
    color: var(--muted);
    background: var(--tint);
    font-size: 24px;
}

.success-icon {
    display: grid;
    place-items: center;
    width: 68px;
    height: 68px;
    border-radius: 50%;
    color: #fff;
    background: linear-gradient(145deg,var(--primary),var(--accent));
    font-size: 30px;
    font-weight: 900;
}

.modal-card h2 {
    margin: 20px 0 8px;
    font-size: 32px;
}

.modal-card > p {
    color: var(--muted);
}

.payment-box {
    margin: 22px 0 14px;
    padding: 22px;
    border-radius: 20px;
    background: var(--tint);
}

    .payment-box > span {
        color: var(--primary);
        font-size: 11px;
        font-weight: 800;
        text-transform: uppercase;
        letter-spacing: .08em;
    }

    .payment-box h3 {
        margin: 7px 0 14px;
    }

    .payment-box ol {
        padding-left: 20px;
        color: var(--muted);
        font-size: 13px;
    }

[data-reveal] {
    opacity: 0;
    transform: translateY(26px);
    transition: opacity .7s ease, transform .7s ease;
}

    [data-reveal].visible {
        opacity: 1;
        transform: none;
    }

@media (max-width: 1050px) {
    .main-nav {
        gap: 17px;
    }

        .main-nav > a:not(.nav-cta) {
            font-size: 12px;
        }

    .hero-layout {
        gap: 32px;
    }

    .hero h1 {
        font-size: clamp(40px,5.5vw,62px);
    }

    .partner-row {
        grid-template-columns: repeat(4,1fr);
    }

    .sponsor-grid {
        grid-template-columns: repeat(3,1fr);
    }
}

@media (max-width: 860px) {
    .nav-toggle {
        display: block;
        color: inherit;
    }

    .main-nav {
        position: fixed;
        inset: 76px 20px auto;
        display: none;
        padding: 18px;
        border-radius: 20px;
        color: var(--ink);
        background: #fff;
        box-shadow: var(--shadow);
    }

        .main-nav.open {
            display: grid;
        }

        .main-nav > a:not(.nav-cta) {
            padding: 10px;
        }

            .main-nav > a:not(.nav-cta)::after {
                display: none;
            }

    .nav-cta {
        text-align: center;
        color: #fff;
        background: var(--primary);
    }

    .hero {
        padding-top: 120px;
    }

    .hero-layout, .split-layout, .registration-layout, .stream-layout, .contact-layout {
        grid-template-columns: 1fr;
    }

    .hero-panel {
        max-width: 560px;
        margin: auto;
    }

    .registration-copy {
        position: static;
    }

    .section-title-row {
        grid-template-columns: 1fr;
        gap: 14px;
        align-items: start;
    }

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

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

    .person-card:last-child {
        grid-column: auto;
        max-width: none;
    }

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

    .footer-links {
        align-items: flex-start;
    }
}

@media (max-width: 600px) {
    .container {
        width: min(100% - 28px, var(--container));
    }

    .section {
        padding: 78px 0;
    }

    .nav-wrap {
        min-height: 72px;
    }

    .brand {
        min-width: 0;
    }

        .brand img {
            width: 42px;
            height: 42px;
        }

        .brand strong {
            font-size: 12px;
        }

        .brand small {
            display: none;
        }

    .hero {
        min-height: auto;
        padding: 105px 0 36px;
    }

    .eyebrow {
        align-items: flex-start;
        border-radius: 14px;
        font-size: 11px;
    }

    .hero h1 {
        margin-top: 20px;
        font-size: 40px;
    }

    .hero-subtitle {
        font-size: 15px;
    }

    .hero-meta {
        grid-template-columns: 1fr;
    }

    .hero-actions {
        display: grid;
    }

    .hero-panel {
        padding: 16px;
        border-radius: 24px;
    }

    .countdown strong {
        font-size: 20px;
    }

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

        .partner-row img {
            height: 98px;
        }

    .stat-row {
        grid-template-columns: 1fr;
    }

    .topics-card {
        padding: 22px;
    }

    .person-card {
        align-items: flex-start;
    }

    .person-photo {
        width: 78px;
        height: 94px;
    }

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

    .pricing-card, .registration-form, .contact-card {
        padding: 24px;
        border-radius: 24px;
    }

    .form-head {
        align-items: flex-start;
    }

    .secure-pill {
        display: none;
    }

    .form-grid, .participation-choice {
        grid-template-columns: 1fr;
    }

    .field-wide {
        grid-column: auto;
    }

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

    .sponsor-card {
        min-height: 110px;
    }

    .map-wrap, .map-wrap iframe {
        min-height: 380px;
    }

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

    .footer-bottom {
        flex-direction: column;
    }

    .modal-card {
        padding: 28px 20px 20px;
    }
}