:root {
    --blue: #111b46;
    --blue-2: #2934b5;
    --indigo: #4f46e5;
    --gold: #b86b23;
    --gold-2: #f4c84d;
    --green: #116466;
    --ink: #171717;
    --muted: #60646c;
    --line: #e4e7ec;
    --soft: #f6f8fb;
    --white: #ffffff;
    --shadow: 0 24px 60px rgb(17 27 70 / 14%);
    font-family:
        'Instrument Sans',
        ui-sans-serif,
        system-ui,
        -apple-system,
        BlinkMacSystemFont,
        'Segoe UI',
        sans-serif;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--ink);
    background: var(--white);
}

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

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

.container {
    width: min(1180px, calc(100% - 40px));
    margin-inline: auto;
}

.narrow {
    width: min(940px, calc(100% - 40px));
}

.center {
    text-align: center;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    border-bottom: 1px solid var(--line);
    background: rgb(255 255 255 / 96%);
    backdrop-filter: blur(14px);
}

.header-inner {
    min-height: 92px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
}

.brand img {
    width: min(330px, 52vw);
    height: auto;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 30px;
    color: #20212a;
    font-size: 14px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.main-nav a {
    transition: color 160ms ease;
}

.main-nav a:hover {
    color: var(--indigo);
}

.header-cta,
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    border-radius: 7px;
    padding: 0 22px;
    font-size: 14px;
    font-weight: 800;
    text-transform: uppercase;
    transition:
        background 160ms ease,
        color 160ms ease,
        border-color 160ms ease,
        transform 160ms ease;
}

.header-cta,
.button-primary {
    background: var(--indigo);
    color: var(--white);
    box-shadow: 0 12px 24px rgb(79 70 229 / 24%);
}

.header-cta:hover,
.button-primary:hover {
    background: var(--blue-2);
    transform: translateY(-1px);
}

.button-secondary {
    border: 1px solid rgb(255 255 255 / 72%);
    color: var(--white);
    background: rgb(255 255 255 / 10%);
}

.button-secondary:hover {
    color: var(--ink);
    background: var(--white);
}

.hero {
    position: relative;
    min-height: 740px;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-image,
.hero-overlay {
    position: absolute;
    inset: 0;
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
}

.hero-overlay {
    z-index: 1;
    background:
        linear-gradient(
            90deg,
            rgb(0 0 0 / 68%),
            rgb(0 0 0 / 42%) 48%,
            rgb(0 0 0 / 22%)
        ),
        linear-gradient(0deg, rgb(0 0 0 / 28%), transparent 38%);
}

.hero-content {
    position: relative;
    z-index: 2;
    color: var(--white);
    padding-block: 120px 150px;
}

.hero-kicker,
.section-kicker {
    margin: 0;
    color: var(--gold);
    font-size: 14px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.hero h1 {
    max-width: 1000px;
    margin: 22px 0 0;
    font-size: clamp(38px, 6.2vw, 76px);
    line-height: 1.08;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.01em;
}

.hero-meta {
    margin: 26px 0 0;
    font-size: clamp(20px, 2.4vw, 30px);
    font-weight: 800;
}

.hero-theme {
    max-width: 760px;
    margin: 20px 0 0;
    color: rgb(255 255 255 / 90%);
    font-size: 18px;
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 38px;
}

.hero-banners {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    width: min(620px, 100%);
    margin-top: 34px;
    padding: 14px;
    border: 1px solid rgb(255 255 255 / 28%);
    border-radius: 10px;
    background: rgb(255 255 255 / 92%);
    box-shadow: 0 22px 50px rgb(0 0 0 / 18%);
}

.hero-banners img {
    width: 100%;
    height: auto;
}

.hero-banner-main {
    flex: 1 1 auto;
    min-width: 0;
}

.hero-banner-mark {
    flex: 0 0 108px;
}

.info-strip {
    position: relative;
    z-index: 5;
    margin-top: -52px;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    overflow: hidden;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.info-card {
    min-height: 124px;
    padding: 28px;
    color: var(--white);
}

.info-card span {
    display: block;
    color: rgb(255 255 255 / 70%);
    font-size: 12px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.info-card strong {
    display: block;
    margin-top: 12px;
    font-size: 20px;
    line-height: 1.35;
}

.info-blue {
    background: var(--blue);
}

.info-gold {
    background: var(--gold);
}

.info-green {
    background: var(--green);
}

.section {
    padding-block: 96px;
}

.about-section h2,
.section-heading h2,
.focus-copy h2,
.schedule-grid h2,
.contact-section h2 {
    margin: 18px 0 0;
    color: var(--ink);
    font-size: clamp(32px, 4vw, 54px);
    line-height: 1.14;
    font-weight: 800;
}

.theme-line {
    margin: 24px auto 0;
    font-size: clamp(19px, 2.5vw, 28px);
    font-weight: 800;
}

.theme-line span {
    color: var(--gold);
}

.copy-block {
    margin-top: 42px;
    color: var(--muted);
    text-align: left;
    font-size: 18px;
    line-height: 1.85;
}

.focus-section {
    background: var(--soft);
}

.focus-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 58px;
    align-items: center;
}

.focus-copy p:not(.section-kicker),
.section-heading p,
.schedule-grid > div > p {
    margin: 22px 0 0;
    color: var(--muted);
    font-size: 17px;
    line-height: 1.8;
}

.focus-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
}

.focus-cards article {
    min-height: 170px;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 26px;
    background: var(--white);
}

.focus-cards span {
    color: var(--gold);
    font-size: 13px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.focus-cards p {
    margin: 16px 0 0;
    color: var(--muted);
    line-height: 1.65;
}

.featured-speakers,
.speaker-grid {
    display: grid;
    gap: 22px;
}

.featured-speakers {
    grid-template-columns: repeat(4, 1fr);
    margin-top: 50px;
}

.speaker-grid {
    grid-template-columns: repeat(4, 1fr);
    margin-top: 24px;
}

.speaker-card {
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--white);
    transition:
        border-color 160ms ease,
        box-shadow 160ms ease,
        transform 160ms ease;
}

.speaker-card:hover {
    border-color: rgb(79 70 229 / 45%);
    box-shadow: 0 18px 38px rgb(17 27 70 / 12%);
    transform: translateY(-2px);
}

.speaker-card img {
    width: 100%;
    aspect-ratio: 3 / 4;
    object-fit: cover;
    background: var(--soft);
}

.speaker-featured img {
    aspect-ratio: 3 / 4;
}

.speaker-card div {
    padding: 22px;
}

.speaker-card h3 {
    margin: 0;
    color: var(--ink);
    font-size: 17px;
    line-height: 1.35;
    font-weight: 800;
}

.speaker-card p {
    margin: 12px 0 0;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.65;
}

.speaker-card span {
    display: block;
    margin-top: 16px;
    color: var(--indigo);
    font-size: 12px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.schedule-section {
    background: var(--blue);
    color: var(--white);
}

.schedule-grid {
    display: grid;
    grid-template-columns: 0.78fr 1.22fr;
    gap: 58px;
}

.schedule-grid h2 {
    color: var(--white);
}

.schedule-grid > div > p {
    color: rgb(255 255 255 / 72%);
}

.schedule-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
}

.schedule-cards article {
    border: 1px solid rgb(255 255 255 / 14%);
    border-radius: 8px;
    padding: 28px;
    background: rgb(255 255 255 / 7%);
}

.schedule-cards span {
    color: var(--gold-2);
    font-size: 13px;
    font-weight: 800;
    text-transform: uppercase;
}

.schedule-cards h3 {
    margin: 14px 0 0;
    font-size: 28px;
    line-height: 1.2;
}

.schedule-cards strong {
    display: block;
    margin-top: 10px;
    color: rgb(255 255 255 / 72%);
}

.schedule-cards p {
    margin: 22px 0 0;
    color: rgb(255 255 255 / 78%);
    line-height: 1.7;
}

.contact-grid {
    display: grid;
    grid-template-columns: 0.85fr 1.15fr;
    gap: 56px;
}

.footer-logo-row {
    display: flex;
    align-items: center;
    gap: 22px;
    flex-wrap: wrap;
    margin-bottom: 22px;
}

.ceie-logo {
    width: 108px;
    flex: 0 0 auto;
}

.footer-logo {
    width: min(280px, 64vw);
    flex: 0 1 auto;
}

.organizer-list {
    margin: 24px 0 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 14px;
    color: var(--muted);
    line-height: 1.7;
}

.organizer-list li {
    position: relative;
    padding-left: 22px;
}

.organizer-list li::before {
    content: '';
    position: absolute;
    top: 0.72em;
    left: 0;
    width: 8px;
    height: 8px;
    border-radius: 999px;
    background: var(--indigo);
}

.social-links {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 28px;
}

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border: 1px solid var(--line);
    border-radius: 999px;
    color: var(--blue);
    background: var(--white);
    transition:
        background 160ms ease,
        border-color 160ms ease,
        color 160ms ease,
        transform 160ms ease;
}

.social-links a:hover {
    border-color: var(--indigo);
    color: var(--white);
    background: var(--indigo);
    transform: translateY(-1px);
}

.social-links svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

.contact-card {
    margin: 0;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 34px;
    background: var(--soft);
    color: var(--muted);
    font-style: normal;
    line-height: 1.75;
}

.contact-card span {
    display: block;
    color: var(--gold);
    font-size: 13px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.contact-items {
    display: grid;
    gap: 24px;
    margin-top: 24px;
}

.contact-item {
    display: grid;
    grid-template-columns: 46px 1fr;
    gap: 16px;
    align-items: start;
}

.contact-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 46px;
    height: 46px;
    border-radius: 999px;
    color: var(--white);
    background: var(--indigo);
}

.contact-icon svg {
    width: 22px;
    height: 22px;
    fill: currentColor;
}

.contact-item h3 {
    margin: 0 0 4px;
    color: var(--ink);
    font-size: 15px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.contact-item p {
    margin: 0;
}

.contact-card a {
    color: var(--indigo);
    font-weight: 800;
}

.simple-page {
    min-height: 100vh;
    background:
        linear-gradient(135deg, rgb(17 27 70 / 7%), rgb(184 107 35 / 8%)),
        var(--soft);
}

.registration-shell,
.message-shell {
    width: min(100% - 32px, 980px);
    min-height: 100vh;
    margin-inline: auto;
    display: grid;
    place-items: center;
}

.registration-card,
.message-card {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--white);
    box-shadow: var(--shadow);
}

.registration-card {
    padding: clamp(24px, 4vw, 42px);
}

.message-card {
    max-width: 680px;
    padding: clamp(28px, 5vw, 48px);
    text-align: center;
}

.back-link {
    display: inline-flex;
    margin-bottom: 24px;
    color: var(--indigo);
    font-size: 14px;
    font-weight: 800;
}

.registration-card h1,
.message-card h1 {
    margin: 14px 0 0;
    color: var(--ink);
    line-height: 1.16;
}

.registration-intro,
.message-card p {
    margin: 18px 0 0;
    color: var(--muted);
    line-height: 1.75;
}

.form-alert {
    margin-top: 24px;
    border: 1px solid rgb(220 38 38 / 30%);
    border-radius: 8px;
    padding: 14px 16px;
    color: #991b1b;
    background: #fef2f2;
    font-weight: 700;
}

.registration-form {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 34px;
}

.registration-form label {
    display: grid;
    gap: 8px;
    color: var(--ink);
    font-size: 14px;
    font-weight: 800;
}

.required-mark {
    color: #dc2626;
    font-weight: 800;
}

.registration-form input,
.registration-form select {
    width: 100%;
    min-height: 46px;
    border: 1px solid #cfd5df;
    border-radius: 7px;
    padding: 0 13px;
    color: var(--ink);
    background: var(--white);
    font: inherit;
    font-weight: 500;
}

.registration-form input:focus,
.registration-form select:focus {
    outline: 3px solid rgb(79 70 229 / 18%);
    border-color: var(--indigo);
}

.registration-form small {
    color: #dc2626;
    font-weight: 700;
}

.form-actions {
    grid-column: 1 / -1;
    margin-top: 10px;
}

.message-card .button {
    margin-top: 28px;
}

@media (max-width: 1040px) {
    .header-inner {
        min-height: auto;
        padding-block: 14px;
    }

    .main-nav {
        display: none;
    }

    .hero {
        min-height: 640px;
    }

    .focus-grid,
    .schedule-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 720px) {
    .container,
    .narrow {
        width: min(100% - 28px, 1180px);
    }

    .brand img {
        width: min(250px, 58vw);
    }

    .header-cta {
        min-height: 40px;
        padding-inline: 14px;
        font-size: 12px;
    }

    .hero {
        min-height: 610px;
    }

    .hero-overlay {
        background: linear-gradient(90deg, rgb(0 0 0 / 74%), rgb(0 0 0 / 50%));
    }

    .hero-content {
        padding-block: 82px 126px;
    }

    .hero h1 {
        font-size: clamp(34px, 12vw, 48px);
    }

    .hero-banners {
        align-items: center;
        gap: 12px;
        padding: 10px;
    }

    .hero-banner-mark {
        flex-basis: 74px;
    }

    .info-grid,
    .focus-cards,
    .schedule-cards,
    .featured-speakers,
    .speaker-grid,
    .registration-form {
        grid-template-columns: 1fr;
    }

    .section {
        padding-block: 72px;
    }

    .copy-block {
        font-size: 16px;
    }
}