:root {
    --blue: #1e3a8a;
    --blue-dark: #142861;
    --blue-light: #3b5bb8;
    --crimson: #c8294c;
    --crimson-dark: #9d1f3b;
    --navy: #0f1e45;
    --bg: #f7f8fc;
    --surface: #ffffff;
    --soft: #eef1f8;
    --border: #e2e5ee;
    --text: #1a1f36;
    --muted: #6a7290;
    --shadow-sm: 0 10px 30px rgba(15, 30, 69, 0.06);
    --shadow-md: 0 24px 60px rgba(15, 30, 69, 0.12);
    --radius-sm: 16px;
    --radius-md: 22px;
    --radius-lg: 32px;
    --container: min(1200px, calc(100% - 32px));
}

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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: "Inter", sans-serif;
    color: var(--text);
    background: var(--bg);
}

body.menu-open {
    overflow: hidden;
}

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

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

button,
input,
textarea {
    font: inherit;
}

button {
    cursor: pointer;
}

[id] {
    scroll-margin-top: 92px;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

.container {
    width: var(--container);
    margin: 0 auto;
}

.section {
    padding: 96px 0;
}

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

.section--pattern {
    position: relative;
    overflow: hidden;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0.92)),
        url("../images/network-pattern.jpg") center/cover no-repeat;
}

.surface-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    width: fit-content;
    padding: 9px 14px;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: none;
}

.eyebrow--soft {
    background: rgba(200, 41, 76, 0.1);
    color: var(--crimson);
}

.eyebrow--inverse {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.18);
    color: #ffffff;
    backdrop-filter: blur(8px);
}

.eyebrow__dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--crimson);
}

.section-intro {
    display: grid;
    gap: 16px;
    max-width: 760px;
}

.section-intro--center {
    margin: 0 auto;
    text-align: center;
    justify-items: center;
}

.section-intro h1,
.section-intro h2,
.section-head h2,
.hero__title,
.pricing-card h3,
.speaker-preview h3,
.keynote-card h3,
.faculty-card h3,
.profile-card h2,
.site-footer__column h3,
.contact-hero h2 {
    margin: 0;
    font-weight: 800;
    letter-spacing: -0.04em;
    color: var(--text);
}

.section-intro h1 {
    font-size: clamp(2.8rem, 5vw, 4.8rem);
}

.section-intro h2,
.section-head h2,
.contact-hero h2 {
    font-size: clamp(2rem, 4vw, 3rem);
}

.section-intro p,
.hero__copy,
.hero__subtitle,
.hero__theme strong,
.speaker-preview p,
.speaker-preview span,
.keynote-card p,
.keynote-card span,
.faculty-card p,
.faculty-card span,
.profile-card__lead,
.profile-card__meta,
.rich-copy p,
.site-footer__brand p,
.footer-nav a,
.site-footer__bottom p {
    color: var(--muted);
}

.section-head {
    margin-bottom: 36px;
}

.section-head--between {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 20px;
}

.section-action {
    display: flex;
    justify-content: center;
    margin-top: 28px;
}

.section-title-inline {
    display: flex;
    align-items: center;
    gap: 14px;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(226, 229, 238, 0.92);
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    min-height: 72px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.brand__logo {
    width: 42px;
    height: 42px;
    border-radius: 12px;
}

.brand__copy {
    display: grid;
    gap: 2px;
}

.brand__copy strong {
    font-size: 0.95rem;
    font-weight: 800;
    color: var(--text);
}

.brand__copy small {
    font-size: 0.72rem;
    color: var(--muted);
}

.primary-nav {
    display: flex;
    align-items: center;
    gap: 6px;
}

.primary-nav__link {
    padding: 10px 12px;
    border-radius: 10px;
    color: var(--muted);
    font-size: 0.92rem;
    font-weight: 600;
    transition: color 0.2s ease, background 0.2s ease;
}

.primary-nav__link:hover,
.primary-nav__link.is-active,
.primary-nav__link.is-current {
    color: var(--text);
    background: rgba(30, 58, 138, 0.08);
}

.nav-dropdown {
    position: relative;
}

.nav-dropdown__summary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    list-style: none;
    cursor: pointer;
}

.nav-dropdown__summary::-webkit-details-marker {
    display: none;
}

.nav-dropdown__summary i {
    font-size: 0.78rem;
    transition: transform 0.2s ease;
}

.nav-dropdown[open] .nav-dropdown__summary i {
    transform: rotate(180deg);
}

.nav-dropdown__menu {
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    min-width: 230px;
    display: grid;
    gap: 4px;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}

.nav-dropdown__link {
    padding: 10px 12px;
    border-radius: 10px;
    color: var(--muted);
    font-size: 0.92rem;
    font-weight: 600;
    transition: background 0.2s ease, color 0.2s ease;
}

.nav-dropdown__link:hover,
.nav-dropdown__link.is-active {
    color: var(--text);
    background: rgba(30, 58, 138, 0.08);
}

.nav-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--surface);
    color: var(--blue);
}

.site-header__actions {
    flex-shrink: 0;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 13px 22px;
    border: 1px solid transparent;
    border-radius: 12px;
    font-size: 0.95rem;
    font-weight: 700;
    transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
    transform: translateY(-1px);
}

.btn--small {
    padding: 11px 18px;
    font-size: 0.88rem;
}

.btn--full {
    width: 100%;
}

.btn--primary {
    color: #ffffff;
    background: var(--blue);
    box-shadow: 0 18px 34px rgba(30, 58, 138, 0.18);
}

.btn--primary:hover {
    background: var(--blue-dark);
}

.btn--accent {
    color: #ffffff;
    background: var(--crimson);
    box-shadow: 0 18px 34px rgba(200, 41, 76, 0.24);
}

.btn--accent:hover {
    background: var(--crimson-dark);
}

.btn--secondary {
    color: var(--blue);
    background: var(--surface);
    border-color: var(--border);
}

.btn--ghost {
    color: var(--blue);
    background: var(--soft);
}

.btn--light {
    color: var(--blue);
    background: #ffffff;
}

.btn--outline-light {
    color: #ffffff;
    border-color: rgba(255, 255, 255, 0.28);
    background: transparent;
}

.hero {
    position: relative;
    overflow: hidden;
    min-height: 680px;
}

.hero__media,
.hero__overlay {
    position: absolute;
    inset: 0;
}

.hero__media {
    background: url("../images/hero-sibcon.jpg") center/cover no-repeat;
}

.hero__overlay {
    background: linear-gradient(90deg, rgba(15, 30, 69, 0.96) 0%, rgba(15, 30, 69, 0.82) 48%, rgba(15, 30, 69, 0.42) 100%);
}

.hero__inner {
    position: relative;
    display: flex;
    align-items: center;
    min-height: 680px;
    padding: 88px 0 92px;
}

.hero__content {
    max-width: 640px;
    display: grid;
    gap: 22px;
}

.hero__title {
    font-size: clamp(3.8rem, 7vw, 6.4rem);
    line-height: 0.95;
    color: #ffffff;
}

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

.hero__subtitle {
    margin: 0;
    font-size: clamp(1.3rem, 2.2vw, 1.85rem);
    font-weight: 700;
    color: rgba(255, 255, 255, 0.92);
}

.hero__copy {
    margin: 0;
    max-width: 560px;
    font-size: 1.08rem;
    line-height: 1.75;
    color: rgba(255, 255, 255, 0.78);
}

.hero__meta,
.hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

.hero__meta-item {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 600;
}

.hero__meta-item i {
    color: var(--crimson);
}

.hero__theme {
    display: grid;
    gap: 8px;
}

.hero__theme span {
    font-size: 0.82rem;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.64);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.hero__theme strong {
    font-size: 1.05rem;
    line-height: 1.7;
    color: #ffffff;
}

.countdown {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
    max-width: 620px;
}

.countdown__item {
    padding: 20px 14px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.14);
    text-align: center;
    backdrop-filter: blur(10px);
}

.countdown__item strong {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: #ffffff;
}

.countdown__item span {
    display: block;
    margin-top: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.72);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.stat-strip {
    background: var(--blue);
    color: #ffffff;
}

.stat-strip__grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.stat-strip__item {
    padding: 28px 22px;
    text-align: center;
}

.stat-strip__item + .stat-strip__item {
    border-left: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-strip__item strong {
    display: block;
    font-size: 2rem;
    font-weight: 800;
}

.stat-strip__item span {
    display: block;
    margin-top: 6px;
    color: rgba(255, 255, 255, 0.8);
}

.highlight-grid,
.pillar-grid,
.pricing-grid,
.workshop-grid,
.partner-grid,
.faculty-grid {
    display: grid;
    gap: 24px;
}

.highlight-grid {
    margin-top: 48px;
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.highlight-card,
.pillar-card,
.pricing-card,
.workshop-card,
.speaker-preview,
.partner-card,
.keynote-card,
.faculty-card,
.profile-card,
.contact-detail-card,
.map-card,
.session-card {
    overflow: hidden;
}

.highlight-card,
.pillar-card,
.pricing-card,
.workshop-card,
.speaker-preview,
.faculty-card {
    padding: 28px;
}

.icon-badge,
.icon-shell,
.pricing-row__icon,
.schedule-banner__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.icon-badge {
    width: 52px;
    height: 52px;
    border-radius: 16px;
    background: rgba(30, 58, 138, 0.12);
    color: var(--blue);
}

.icon-badge--blue {
    background: var(--blue);
    color: #ffffff;
}

.icon-badge--crimson {
    background: var(--crimson);
    color: #ffffff;
}

.icon-shell {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: rgba(30, 58, 138, 0.1);
    color: var(--blue);
}

.highlight-card h3,
.pillar-card h3,
.workshop-card h3 {
    margin: 18px 0 10px;
    font-size: 1.18rem;
    font-weight: 800;
}

.highlight-card p,
.pillar-card p,
.workshop-card p {
    margin: 0;
    line-height: 1.75;
    color: var(--muted);
}

.pillar-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
}

.speaker-carousel {
    overflow: hidden;
}

.speaker-track {
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: calc((100% - 48px) / 4);
    gap: 16px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
    padding-bottom: 6px;
}

.speaker-track::-webkit-scrollbar {
    display: none;
}

.speaker-preview {
    scroll-snap-align: start;
    padding: 0;
}

.speaker-preview__image img {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.speaker-preview__body {
    display: grid;
    gap: 10px;
    padding: 22px;
}

.speaker-preview__body h3,
.faculty-card__body h3 {
    font-size: 1.12rem;
    line-height: 1.35;
}

.speaker-preview__body p,
.speaker-preview__body span,
.faculty-card__body p,
.faculty-card__body span,
.keynote-card__body p,
.keynote-card__body span {
    margin: 0;
    line-height: 1.65;
}

.carousel-controls {
    display: flex;
    gap: 10px;
}

.carousel-button {
    width: 44px;
    height: 44px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--surface);
    color: var(--blue);
}

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

.pricing-card {
    display: grid;
    gap: 24px;
}

.pricing-card__header {
    display: flex;
    align-items: center;
    gap: 14px;
}

.pricing-card__header h3 {
    font-size: 1.8rem;
}

.pricing-list {
    display: grid;
    gap: 16px;
}

.pricing-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: 16px;
    border: 1px solid var(--border);
    border-radius: 16px;
}

.pricing-row__title {
    display: flex;
    align-items: center;
    gap: 12px;
}

.pricing-row__title strong {
    font-size: 0.98rem;
    line-height: 1.5;
}

.pricing-row__icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(30, 58, 138, 0.1);
    color: var(--blue);
    flex-shrink: 0;
}

.pricing-row__icon.is-crimson {
    background: rgba(200, 41, 76, 0.12);
    color: var(--crimson);
}

.pricing-row__amount {
    display: flex;
    align-items: baseline;
    gap: 4px;
    flex-shrink: 0;
    color: var(--blue);
}

.pricing-row__amount span {
    font-size: 2rem;
    font-weight: 800;
}

.pricing-row__amount small {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--muted);
}

.pricing-row__amount.is-crimson {
    color: var(--crimson);
}

.schedule-banner {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(360px, 0.94fr);
    gap: 28px;
    padding: 42px;
    border-radius: 30px;
    background: var(--navy);
    color: #ffffff;
    margin-bottom: 34px;
}

.schedule-banner h2 {
    margin: 0 0 12px;
    font-size: clamp(2rem, 4vw, 3rem);
    color: #ffffff;
}

.schedule-banner p {
    margin: 0;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.78);
}

.schedule-banner__cards {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.schedule-banner__card {
    padding: 22px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.schedule-banner__icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--crimson);
    color: #ffffff;
    margin-bottom: 14px;
}

.schedule-banner__card h3 {
    margin: 0 0 8px;
    color: #ffffff;
}

.tabs {
    display: grid;
    gap: 24px;
}

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

.tabs__button {
    padding: 14px 22px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--surface);
    color: var(--muted);
    font-weight: 700;
}

.tabs__button.is-active {
    background: var(--blue);
    color: #ffffff;
    border-color: transparent;
}

.tabs__panel {
    display: none;
}

.tabs__panel.is-active {
    display: block;
}

.session-list {
    display: grid;
    gap: 16px;
}

.session-card {
    display: grid;
    grid-template-columns: 150px 1fr;
    align-items: start;
    gap: 18px;
    padding: 20px 22px;
}

.session-card__time {
    padding: 14px 16px;
    border-radius: 16px;
    background: var(--soft);
    color: var(--blue);
    font-weight: 800;
    text-align: center;
}

.session-card__body {
    display: grid;
    gap: 8px;
}

.session-card__body h3 {
    margin: 0;
    font-size: 1.14rem;
}

.session-card__body p,
.session-card__body span {
    margin: 0;
    color: var(--muted);
}

.workshop-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.workshop-card {
    display: grid;
    align-content: start;
    gap: 16px;
}

.workshop-card__meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.workshop-card__meta strong {
    color: var(--blue);
    font-size: 1.12rem;
}

.workshop-card__meta span {
    color: var(--muted);
    font-size: 0.9rem;
}

.venue-grid {
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: 28px;
    align-items: center;
}

.venue-note {
    display: flex;
    align-items: start;
    gap: 12px;
    padding: 18px 20px;
    border-radius: 18px;
    background: #ffffff;
    border: 1px solid var(--border);
}

.venue-note i {
    color: var(--crimson);
    margin-top: 4px;
}

.map-card {
    padding: 0;
}

.map-card iframe {
    width: 100%;
    height: 420px;
    border: 0;
}

.partner-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.partner-card {
    min-height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    text-align: center;
}

.partner-card img {
    max-height: 64px;
    object-fit: contain;
}

.partner-card span {
    font-weight: 700;
    line-height: 1.5;
}

.section--identity {
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.9), rgba(238, 241, 248, 0.74)),
        url("../images/network-pattern.jpg") center/cover no-repeat;
}

.identity-shell {
    display: grid;
    gap: 26px;
}

.identity-ribbon-card {
    overflow: hidden;
    border-radius: 28px;
}

.identity-ribbon-card img {
    width: 100%;
    height: 260px;
    object-fit: cover;
    object-position: center center;
}

.identity-tag-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
}

.identity-tag {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 16px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.88);
    border: 1px solid var(--border);
    color: var(--blue);
    font-size: 0.9rem;
    font-weight: 700;
    box-shadow: var(--shadow-sm);
}

.contact-section {
    padding: 96px 0 72px;
    background: var(--blue);
    color: #ffffff;
}

.contact-section--compact {
    padding-top: 72px;
}

.contact-hero {
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: 28px;
    align-items: center;
}

.contact-hero--single {
    grid-template-columns: minmax(0, 1fr) auto;
}

.contact-hero__content h2 {
    color: #ffffff;
}

.contact-hero__content p {
    margin: 18px 0 0;
    max-width: 620px;
    color: rgba(255, 255, 255, 0.82);
    line-height: 1.8;
}

.contact-hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 28px;
}

.contact-card-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.contact-detail-card {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 18px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 18px;
}

.contact-detail-card i {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: var(--crimson);
    color: #ffffff;
    flex-shrink: 0;
}

.contact-detail-card span,
.contact-detail-card strong {
    display: block;
}

.contact-detail-card span {
    color: rgba(255, 255, 255, 0.72);
    font-size: 0.82rem;
}

.contact-detail-card strong {
    margin-top: 4px;
    font-size: 0.98rem;
    color: #ffffff;
}

.alert {
    padding: 14px 16px;
    border-radius: 14px;
    margin: 0 0 16px;
    border: 1px solid transparent;
}

.alert ul {
    margin: 0;
    padding-left: 18px;
}

.alert-success {
    color: #14532d;
    background: rgba(20, 83, 45, 0.1);
    border-color: rgba(20, 83, 45, 0.14);
}

.alert-error {
    color: #991b1b;
    background: rgba(153, 27, 27, 0.08);
    border-color: rgba(153, 27, 27, 0.14);
}

.alert-info {
    color: var(--blue);
    background: rgba(30, 58, 138, 0.08);
    border-color: rgba(30, 58, 138, 0.14);
}

.site-footer {
    margin-top: 48px;
    background: #ffffff;
    border-top: 1px solid var(--border);
}

.site-footer__top {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(220px, 0.7fr) minmax(0, 1fr);
    gap: 28px;
    padding: 48px 0;
}

.site-footer__brand {
    display: grid;
    gap: 16px;
}

.brand--footer .brand__copy small {
    display: block;
}

.site-footer__column h3 {
    margin-bottom: 16px;
    font-size: 1rem;
}

.footer-nav,
.partner-chip-grid {
    display: grid;
    gap: 12px;
}

.footer-nav a {
    font-weight: 600;
}

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

.partner-chip {
    display: inline-flex;
    align-items: center;
    padding: 12px 14px;
    border-radius: 12px;
    background: var(--soft);
    border: 1px solid var(--border);
    font-size: 0.9rem;
    font-weight: 600;
    line-height: 1.45;
}

.site-footer__bottom {
    border-top: 1px solid var(--border);
}

.site-footer__bottom .container {
    padding: 18px 0 28px;
    text-align: center;
}

.page-hero {
    padding: 90px 0;
}

.page-hero--pattern {
    background:
        linear-gradient(180deg, rgba(247, 248, 252, 0.94), rgba(247, 248, 252, 0.94)),
        url("../images/network-pattern.jpg") center/cover no-repeat;
}

.page-hero__inner {
    display: grid;
    gap: 20px;
}

.page-back {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--muted);
    font-weight: 600;
}

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

.keynote-card {
    display: grid;
    grid-template-columns: minmax(220px, 0.42fr) minmax(0, 1fr);
}

.keynote-card__image img {
    width: 100%;
    height: 100%;
    min-height: 320px;
    object-fit: cover;
}

.keynote-card__body {
    display: grid;
    align-content: center;
    gap: 10px;
    padding: 28px;
}

.keynote-card__body h3 {
    font-size: 2rem;
}

.keynote-card__topic {
    margin-top: 8px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

.keynote-card__topic strong {
    display: block;
    margin-bottom: 6px;
    font-size: 0.95rem;
}

.faculty-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.faculty-card {
    padding: 0;
    text-align: center;
}

.faculty-card__image {
    position: relative;
}

.faculty-card__image::after {
    content: "";
    position: absolute;
    inset: auto 0 0;
    height: 45%;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0) 0%, #ffffff 100%);
}

.faculty-card__image img {
    width: 100%;
    height: 300px;
    object-fit: cover;
}

.faculty-card__body {
    position: relative;
    z-index: 1;
    display: grid;
    gap: 8px;
    padding: 0 20px 26px;
    margin-top: -38px;
}

.profile-shell {
    display: grid;
}

.profile-card {
    display: grid;
    grid-template-columns: minmax(320px, 0.42fr) minmax(0, 1fr);
}

.profile-card__image img {
    width: 100%;
    height: 100%;
    min-height: 520px;
    object-fit: cover;
}

.profile-card__body {
    display: grid;
    gap: 18px;
    padding: 34px;
}

.profile-card__lead {
    margin: 0;
    font-size: 1.12rem;
    font-weight: 700;
}

.profile-card__meta {
    margin: -8px 0 0;
    display: block;
}

.profile-topic {
    padding: 18px 20px;
    border-radius: 18px;
    background: var(--soft);
}

.profile-topic strong {
    display: block;
    margin-bottom: 6px;
}

.profile-topic p {
    margin: 0;
    color: var(--muted);
}

.profile-stats {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
}

.profile-stat {
    padding: 18px;
    border-radius: 18px;
    background: var(--soft);
    text-align: center;
}

.profile-stat strong {
    display: block;
    font-size: 1.5rem;
    color: var(--blue);
}

.profile-stat span {
    display: block;
    margin-top: 6px;
    color: var(--muted);
    font-size: 0.9rem;
}

.rich-copy p {
    margin: 0;
    line-height: 1.9;
}

.profile-actions,
.social-links {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--soft);
    color: var(--blue);
}

@media (max-width: 1120px) {
    .highlight-grid,
    .pricing-grid,
    .venue-grid,
    .contact-hero,
    .site-footer__top,
    .keynote-grid,
    .profile-card {
        grid-template-columns: 1fr;
    }

    .pillar-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .workshop-grid,
    .partner-grid,
    .faculty-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .speaker-track {
        grid-auto-columns: calc((100% - 16px) / 2);
    }

    .schedule-banner {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 920px) {
    .nav-toggle {
        display: inline-flex;
    }

    .site-header__actions {
        display: none;
    }

    .primary-nav {
        position: fixed;
        top: 72px;
        left: 16px;
        right: 16px;
        display: grid;
        gap: 8px;
        padding: 18px;
        border: 1px solid var(--border);
        border-radius: 20px;
        background: rgba(255, 255, 255, 0.98);
        box-shadow: var(--shadow-md);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px);
        transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
    }

    .primary-nav.is-open {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    .nav-dropdown {
        width: 100%;
    }

    .nav-dropdown__summary {
        width: 100%;
        justify-content: space-between;
    }

    .nav-dropdown__menu {
        position: static;
        min-width: 0;
        margin-top: 8px;
        background: var(--soft);
        box-shadow: none;
    }

    .section-head--between {
        display: grid;
    }

    .schedule-banner__cards,
    .contact-card-grid,
    .partner-chip-grid {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 720px) {
    .container {
        width: min(100% - 24px, 1200px);
    }

    .hero {
        min-height: auto;
    }

    .hero__inner {
        min-height: auto;
        padding: 90px 0 70px;
    }

    .hero__meta,
    .hero__actions,
    .contact-hero__actions,
    .profile-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .countdown,
    .profile-stats,
    .stat-strip__grid,
    .highlight-grid,
    .pillar-grid,
    .pricing-grid,
    .workshop-grid,
    .partner-grid,
    .faculty-grid {
        grid-template-columns: 1fr;
    }

    .speaker-track {
        grid-auto-columns: 84%;
    }

    .stat-strip__item + .stat-strip__item {
        border-left: 0;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
    }

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

    .identity-ribbon-card img {
        height: 180px;
    }

    .keynote-card__body,
    .profile-card__body {
        padding: 24px;
    }
}

@media (max-width: 560px) {
    .brand__copy small {
        display: none;
    }

    .hero__title {
        font-size: 3rem;
    }

    .hero__subtitle {
        font-size: 1.15rem;
    }

    .countdown__item strong {
        font-size: 1.6rem;
    }

    .speaker-track {
        grid-auto-columns: 88%;
    }

    .keynote-card__body h3 {
        font-size: 1.5rem;
    }
}