/* Landing page ("mission console" theme). Loaded only by index.html. */

:root {
    --bg: #05080d;
    --bg-2: #0a111a;
    --panel: rgba(12, 22, 34, 0.72);
    --line: rgba(90, 209, 255, 0.22);
    --line-strong: rgba(90, 209, 255, 0.55);
    --cyan: #5ad1ff;
    --amber: #ffb14a;
    --red: #ff5a4f;
    --text: #d8e3ec;
    --muted: rgba(216, 227, 236, 0.62);
    --nav-h: 72px;
    --display: 'Chakra Petch', 'Roboto', sans-serif;
    --mono: 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
    --body: 'Roboto', system-ui, sans-serif;
}

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

html { scroll-behavior: smooth; }

body.landing {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--body);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

.landing a { color: var(--cyan); }
.landing img { max-width: 100%; }

/* ---------- Navigation (markup and classes shared with app.js) ---------- */

.landing .navbar {
    position: fixed;
    inset: 0 0 auto 0;
    height: var(--nav-h);
    z-index: 1000;
    display: flex;
    align-items: center;
    background: rgba(5, 8, 13, 0.72);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--line);
}

.landing .navbar-container {
    width: 100%;
    max-width: 1500px;
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
}

.landing .navbar-logo {
    font-family: var(--display);
    font-weight: 700;
    font-size: 1.6rem;
    letter-spacing: 0.04em;
    color: #fff;
    text-decoration: none;
}

.landing .navbar-logo span { color: var(--cyan); }

.landing .nav-menu {
    display: flex;
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 0.25rem;
}

.landing .nav-item { height: var(--nav-h); }

.landing .nav-links {
    display: flex;
    align-items: center;
    height: 100%;
    padding: 0 0.9rem;
    color: var(--text);
    text-decoration: none;
    font-family: var(--mono);
    font-size: 0.82rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    border-bottom: 2px solid transparent;
    transition: color 0.2s ease, border-color 0.2s ease;
}

.landing .nav-links:hover,
.landing .nav-links:focus-visible {
    color: var(--cyan);
    border-bottom-color: var(--cyan);
    outline: none;
}

.landing .menu-icon {
    display: none;
    background: transparent;
    border: 0;
    padding: 0.4rem;
    color: #fff;
    font-size: 1.6rem;
    cursor: pointer;
}

@media screen and (max-width: 960px) {
    .landing .navbar-container { padding: 0 16px; }

    .landing .nav-menu {
        position: absolute;
        top: var(--nav-h);
        left: 0;
        width: 100%;
        flex-direction: column;
        gap: 0;
        padding: 0.5rem 0;
        background: rgba(5, 8, 13, 0.96);
        border-bottom: 1px solid var(--line);
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        transform: translateY(-12px);
        transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s ease;
    }

    .landing .nav-menu.active {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        transform: translateY(0);
    }

    .landing .nav-item { height: auto; width: 100%; }

    .landing .nav-links {
        justify-content: center;
        padding: 1rem;
        border-bottom: 0;
    }

    .landing .nav-links:hover { background: rgba(90, 209, 255, 0.08); }

    .landing .menu-icon { display: block; }
}

/* ---------- Intro (sticky, the scenes slide over it) ---------- */

.intro {
    position: sticky;
    top: 0;
    z-index: 0;
    height: 100vh;
    height: 100svh;
    min-height: 640px;
    display: flex;
    align-items: center;
    padding: calc(var(--nav-h) + 24px) 24px 64px;
    background-color: var(--bg);
    background-image:
        radial-gradient(ellipse at 75% 30%, rgba(61, 139, 255, 0.14), transparent 55%),
        radial-gradient(ellipse at 15% 85%, rgba(255, 140, 80, 0.08), transparent 50%),
        radial-gradient(1px 1px at 23px 41px, rgba(207, 230, 255, 0.8) 50%, transparent 51%),
        radial-gradient(1px 1px at 141px 97px, rgba(207, 230, 255, 0.55) 50%, transparent 51%),
        radial-gradient(1.5px 1.5px at 201px 173px, rgba(207, 230, 255, 0.7) 50%, transparent 51%),
        radial-gradient(1px 1px at 67px 211px, rgba(207, 230, 255, 0.45) 50%, transparent 51%),
        radial-gradient(1px 1px at 251px 29px, rgba(207, 230, 255, 0.6) 50%, transparent 51%);
    background-size: auto, auto, 280px 260px, 280px 260px, 280px 260px, 280px 260px, 280px 260px;
}

.intro-inner {
    width: 100%;
    max-width: 1500px;
    margin: 0 auto;
}

.hero-copy { max-width: 46rem; }

.hero-kicker {
    font-family: var(--mono);
    font-size: 0.8rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--cyan);
    margin: 0 0 1rem;
}

.tentative-stamp {
    display: inline-block;
    margin: 0 0 1.2rem;
    padding: 0.2em 0.7em;
    border: 1.5px solid rgba(255, 138, 128, 0.85);
    border-radius: 4px;
    color: #ff8a80;
    font-family: var(--display);
    font-weight: 700;
    font-size: clamp(1.1rem, 2.4vw, 1.6rem);
    letter-spacing: 0.24em;
    text-transform: uppercase;
}

.tentative-note {
    margin: -0.6rem 0 1.4rem;
    font-family: var(--mono);
    font-size: 0.78rem;
    color: var(--muted);
}

.hero-title {
    margin: 0;
    font-family: var(--display);
    font-weight: 700;
    font-size: clamp(2.6rem, 5.4vw, 4.8rem);
    line-height: 1.02;
    letter-spacing: 0.01em;
    color: #fff;
    text-shadow: 0 0 28px rgba(90, 209, 255, 0.25);
}

.hero-title .accent { color: var(--cyan); }

.hero-sub {
    margin: 0.8rem 0 0;
    font-family: var(--display);
    font-weight: 500;
    font-size: clamp(1.05rem, 1.7vw, 1.35rem);
    color: var(--text);
    letter-spacing: 0.04em;
}

.hero-tagline {
    max-width: 34rem;
    margin: 1.2rem 0 0;
    color: var(--muted);
    font-size: 1.02rem;
}

.hero-countdown {
    margin: 1.8rem 0 0;
    padding: 0.9rem 1rem 0.8rem;
    max-width: 30rem;
    border: 1px solid var(--line);
    background: rgba(5, 8, 13, 0.6);
    position: relative;
}

.hero-countdown::before,
.hero-countdown::after {
    content: '';
    position: absolute;
    width: 12px;
    height: 12px;
    border: 1.5px solid var(--cyan);
}

.hero-countdown::before { top: -1px; left: -1px; border-right: 0; border-bottom: 0; }
.hero-countdown::after { bottom: -1px; right: -1px; border-left: 0; border-top: 0; }

.countdown-caption {
    margin: 0 0 0.5rem;
    font-family: var(--mono);
    font-size: 0.72rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--amber);
}

.countdown-cells {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.4rem;
}

.countdown-cell {
    text-align: center;
}

.countdown-cell span {
    display: block;
    font-family: var(--mono);
    font-weight: 600;
    font-size: clamp(1.6rem, 3vw, 2.3rem);
    line-height: 1.1;
    color: #fff;
    font-variant-numeric: tabular-nums;
}

.countdown-cell small {
    font-family: var(--mono);
    font-size: 0.66rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--muted);
}

.hero-ctas {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1.6rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5em;
    padding: 0.8em 1.4em;
    font-family: var(--mono);
    font-weight: 600;
    font-size: 0.82rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    text-decoration: none;
    border: 1px solid var(--cyan);
    color: var(--bg);
    background: var(--cyan);
    clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
    transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.landing a.btn { color: var(--bg); }

.btn:hover,
.btn:focus-visible {
    background: #fff;
    border-color: #fff;
    transform: translateY(-1px);
    outline: none;
}

.landing a.btn-ghost {
    background: transparent;
    color: var(--cyan);
}

.landing a.btn-ghost:hover,
.landing a.btn-ghost:focus-visible {
    background: rgba(90, 209, 255, 0.12);
    color: #fff;
    border-color: var(--cyan);
}

.landing a.btn-amber {
    background: var(--amber);
    border-color: var(--amber);
}

.scroll-cue {
    position: absolute;
    left: 50%;
    bottom: 18px;
    transform: translateX(-50%);
    font-family: var(--mono);
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    text-decoration: none;
    white-space: nowrap;
}

.landing a.scroll-cue { color: var(--muted); }

/* ---------- Pinned scenes ---------- */

.scenes {
    position: relative;
    z-index: 1;
    background: var(--bg);
    border-radius: 28px 28px 0 0;
    clip-path: inset(0 round 28px 28px 0 0);
    box-shadow: 0 -30px 60px rgba(0, 0, 0, 0.6);
}

.scenes-pin {
    position: sticky;
    top: 0;
    height: 100vh;
    height: 100svh;
    overflow: hidden;
}

#hero-canvas {
    position: absolute;
    inset: 0;
    display: block;
}

.hero-scanlines {
    position: absolute;
    inset: 0;
    pointer-events: none;
    background:
        repeating-linear-gradient(to bottom, rgba(255, 255, 255, 0.025) 0 1px, transparent 1px 3px),
        radial-gradient(ellipse at center, transparent 60%, rgba(0, 0, 0, 0.5) 100%);
}

.scene-rail {
    position: absolute;
    right: 18px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 14px;
    z-index: 3;
}

.scene-rail button {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.3rem 0 0.3rem 0.6rem;
    background: none;
    border: 0;
    border-left: 2px solid var(--line);
    color: var(--muted);
    font-family: var(--mono);
    font-size: 0.68rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    cursor: pointer;
    transition: color 0.2s ease, border-color 0.2s ease;
}

.scene-rail button span { color: var(--cyan); }

.scene-rail button:hover,
.scene-rail button:focus-visible,
.scene-rail button.active {
    color: #fff;
    border-left-color: var(--cyan);
    outline: none;
}

.scene-panels {
    position: relative;
    z-index: 2;
    margin-top: -100vh;
    margin-top: -100svh;
    padding: 0 24px 30vh;
    pointer-events: none;
}

.scene-panel {
    min-height: 120vh;
    display: flex;
    align-items: center;
    max-width: 1500px;
    margin: 0 auto;
}

.scene-panel:first-child { min-height: 100vh; }

.scene-card {
    pointer-events: auto;
    width: min(32rem, 34vw);
    padding: 1.8rem 1.8rem 1.6rem;
    background: rgba(5, 8, 13, 0.78);
    border: 1px solid var(--line);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.scene-card h2 {
    margin: 0 0 1rem;
    font-family: var(--display);
    font-weight: 700;
    font-size: clamp(1.9rem, 3.2vw, 3rem);
    line-height: 1.08;
    color: #fff;
}

.scene-card h2 em {
    font-style: italic;
    color: var(--amber);
}

.scene-card p {
    margin: 0 0 1rem;
    color: var(--text);
    font-size: 1.02rem;
}

.scene-card .scene-topics {
    margin: 0;
    font-family: var(--mono);
    font-size: 0.76rem;
    letter-spacing: 0.04em;
    color: var(--cyan);
}

main {
    position: relative;
    z-index: 2;
    margin-top: -28px;
    background: var(--bg);
    border-radius: 28px 28px 0 0;
    box-shadow: 0 -30px 60px rgba(0, 0, 0, 0.6);
    overflow: hidden;
}

@media (max-width: 900px) {
    .scene-rail { right: 10px; top: auto; bottom: 14px; transform: none; flex-direction: row; gap: 10px; }
    .scene-rail button { border-left: 0; border-bottom: 2px solid var(--line); padding: 0.2rem 0.1rem; }
    .scene-rail button.active { border-bottom-color: var(--cyan); }
    .scene-panels { padding: 0 12px 20vh; }
    .scene-panel { align-items: flex-end; padding-bottom: 12vh; min-height: 110vh; }
    .scene-card { width: 100%; padding: 1.2rem; }
    .scene-card h2 { font-size: 1.6rem; }
    .scene-card p { font-size: 0.94rem; }
}

@media (max-width: 640px) {
    /* taller than the screen on phones, so it scrolls normally instead of pinning */
    .intro { position: relative; padding: calc(var(--nav-h) + 20px) 16px 56px; height: auto; min-height: 100svh; }
    .btn { padding: 0.75em 1.1em; font-size: 0.74rem; }
}

/* ---------- Sections ---------- */

.section {
    position: relative;
    scroll-margin-top: var(--nav-h);
    padding: 96px 24px;
    border-top: 1px solid rgba(90, 209, 255, 0.08);
}

.section:nth-of-type(even) { background: var(--bg-2); }

.section-inner {
    max-width: 1200px;
    margin: 0 auto;
}

.sec-label {
    margin: 0 0 0.5rem;
    font-family: var(--mono);
    font-size: 0.78rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--cyan);
}

.section h2 {
    margin: 0 0 2.2rem;
    font-family: var(--display);
    font-weight: 700;
    font-size: clamp(1.9rem, 3.4vw, 2.8rem);
    line-height: 1.1;
    color: #fff;
}

.panel {
    position: relative;
    background: var(--panel);
    border: 1px solid var(--line);
    padding: 1.5rem;
}

.panel::before,
.panel::after {
    content: '';
    position: absolute;
    width: 14px;
    height: 14px;
    border: 1.5px solid var(--cyan);
    pointer-events: none;
}

.panel::before { top: -1px; left: -1px; border-right: 0; border-bottom: 0; }
.panel::after { bottom: -1px; right: -1px; border-left: 0; border-top: 0; }

/* reveal on scroll (class toggled by app.js) */
.fade-in-section {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in-section.visible {
    opacity: 1;
    transform: none;
}

@media (prefers-reduced-motion: reduce) {
    .fade-in-section { opacity: 1; transform: none; transition: none; }
    html { scroll-behavior: auto; }
}

/* ---------- Timeline ---------- */

.timeline {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    top: 11px;
    height: 1px;
    background: var(--line-strong);
}

.tl-item {
    position: relative;
    padding: 32px 12px 0 0;
}

.tl-item::before {
    content: '';
    position: absolute;
    top: 5px;
    left: 0;
    width: 12px;
    height: 12px;
    transform: rotate(45deg);
    border: 1.5px solid var(--cyan);
    background: var(--bg);
}

.tl-item.key::before {
    border-color: var(--amber);
    background: var(--amber);
    box-shadow: 0 0 14px rgba(255, 177, 74, 0.7);
}

.tl-step {
    font-family: var(--mono);
    font-size: 0.7rem;
    letter-spacing: 0.16em;
    color: var(--muted);
}

.tl-item h3 {
    margin: 0.3rem 0 0.4rem;
    font-family: var(--display);
    font-weight: 600;
    font-size: 1.05rem;
    color: #fff;
}

.tl-item.key h3 { color: var(--amber); }

.tl-item time {
    font-family: var(--mono);
    font-size: 0.9rem;
    color: var(--text);
}

.tl-item.past { opacity: 0.45; }
.tl-item.past time { text-decoration: line-through; }

@media (max-width: 900px) {
    .timeline { grid-template-columns: 1fr; }
    .timeline::before { left: 5px; right: auto; top: 0; bottom: 0; width: 1px; height: auto; }
    .tl-item { padding: 0 0 1.6rem 34px; }
    .tl-item::before { top: 6px; left: 0; }
}

/* ---------- Overview ---------- */

.overview-grid {
    display: grid;
    grid-template-columns: minmax(0, 3fr) minmax(0, 2fr);
    gap: 32px;
    align-items: start;
}

.overview-grid p {
    margin: 0 0 1.2rem;
    font-size: 1.06rem;
    color: var(--text);
}

.stat-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.stat-list li {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.75rem 0;
    border-bottom: 1px dashed var(--line);
    font-family: var(--mono);
    font-size: 0.86rem;
}

.stat-list li:last-child { border-bottom: 0; }
.stat-list span { color: var(--muted); letter-spacing: 0.08em; text-transform: uppercase; }
.stat-list strong { color: #fff; font-weight: 600; text-align: right; }

@media (max-width: 900px) {
    .overview-grid { grid-template-columns: 1fr; }
}

/* ---------- Areas of focus ---------- */

.focus-intro {
    max-width: 46rem;
    margin: -1rem 0 1.8rem;
    color: var(--muted);
    font-size: 1.04rem;
}

.focus-spotlights {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
    margin-bottom: 2.6rem;
}

.focus-spotlight {
    padding: 1.6rem 1.6rem 1.5rem;
    background:
        linear-gradient(135deg, rgba(255, 177, 74, 0.12), transparent 55%),
        var(--panel);
    border-color: rgba(255, 177, 74, 0.35);
}

.focus-spotlight::before,
.focus-spotlight::after { border-color: var(--amber); }

.focus-tag {
    display: inline-block;
    margin-bottom: 0.8rem;
    padding: 0.2rem 0.55rem;
    border: 1px solid var(--amber);
    font-family: var(--mono);
    font-size: 0.68rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--amber);
}

.focus-spotlight h3 {
    margin: 0 0 0.5rem;
    font-family: var(--display);
    font-weight: 700;
    font-size: clamp(1.4rem, 2.2vw, 1.8rem);
    color: #fff;
}

.focus-spotlight p {
    margin: 0;
    color: var(--text);
}

.focus-subhead {
    margin: 0 0 1rem;
    font-family: var(--mono);
    font-weight: 500;
    font-size: 0.8rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--muted);
}

.focus-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 18px;
}

.focus-card {
    padding: 1.2rem 1.2rem 1.25rem;
    transition: border-color 0.2s ease, transform 0.2s ease;
}

.focus-card:hover {
    border-color: var(--line-strong);
    transform: translateY(-2px);
}

.focus-num {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-family: var(--mono);
    font-size: 0.74rem;
    letter-spacing: 0.12em;
    color: var(--cyan);
}

.focus-num em {
    font-style: normal;
    padding: 0.05rem 0.4rem;
    border: 1px solid rgba(255, 177, 74, 0.6);
    color: var(--amber);
    font-size: 0.62rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.focus-card.spot { border-color: rgba(255, 177, 74, 0.35); }

.focus-card h3 {
    margin: 0.55rem 0 0.45rem;
    font-family: var(--display);
    font-weight: 600;
    font-size: 1.06rem;
    line-height: 1.25;
    color: #fff;
}

.focus-card p {
    margin: 0;
    font-size: 0.88rem;
    color: var(--muted);
}

.focus-cta { margin-top: 2rem; }

@media (max-width: 900px) {
    .focus-spotlights { grid-template-columns: 1fr; }
}

/* ---------- Keynotes ---------- */

.speakers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 22px;
}

.speaker-card {
    display: flex;
    flex-direction: column;
    padding: 0;
    overflow: hidden;
}

.speaker-photo {
    position: relative;
    aspect-ratio: 1 / 1;
    overflow: hidden;
    background: #0b1420;
}

.speaker-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(0.35) contrast(1.05);
    transition: filter 0.3s ease, transform 0.5s ease;
}

.speaker-card:hover .speaker-photo img {
    filter: none;
    transform: scale(1.03);
}

.speaker-photo .slot {
    position: absolute;
    left: 10px;
    top: 10px;
    padding: 0.2rem 0.5rem;
    background: rgba(5, 8, 13, 0.82);
    border: 1px solid var(--line-strong);
    font-family: var(--mono);
    font-size: 0.7rem;
    letter-spacing: 0.14em;
    color: var(--cyan);
}

.speaker-body {
    display: flex;
    flex-direction: column;
    flex: 1;
    padding: 1.2rem 1.2rem 1.3rem;
}

.speaker-body h3 {
    margin: 0;
    font-family: var(--display);
    font-weight: 700;
    font-size: 1.3rem;
    color: #fff;
}

.speaker-role {
    margin: 0.3rem 0 0.8rem;
    font-size: 0.86rem;
    color: var(--muted);
}

.speaker-talk {
    margin: 0 0 0.8rem;
    padding-left: 0.7rem;
    border-left: 2px solid var(--amber);
    font-family: var(--display);
    font-weight: 500;
    font-size: 0.98rem;
    color: var(--amber);
}

.bio-preview {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text);
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.bio-preview.expanded {
    display: block;
    -webkit-line-clamp: unset;
}

.speaker-actions {
    display: flex;
    gap: 0.6rem;
    margin-top: auto;
    padding-top: 1rem;
}

.bio-toggle,
.speaker-link {
    padding: 0.5rem 0.8rem;
    background: transparent;
    border: 1px solid var(--line);
    color: var(--cyan);
    font-family: var(--mono);
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    text-decoration: none;
    cursor: pointer;
}

.bio-toggle:hover,
.speaker-link:hover {
    border-color: var(--cyan);
    background: rgba(90, 209, 255, 0.08);
}

/* ---------- Fishbowl ---------- */

.fishbowl-intro {
    max-width: 46rem;
    margin: -1rem 0 2rem;
    color: var(--muted);
}

.panelists-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 22px;
}

.panelist-card {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.panelist-card img {
    width: 84px;
    height: 84px;
    flex-shrink: 0;
    object-fit: cover;
    border: 1px solid var(--line-strong);
    clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
}

.panelist-card h3 {
    margin: 0 0 0.25rem;
    font-family: var(--display);
    font-weight: 700;
    font-size: 1.12rem;
    color: #fff;
}

.panelist-card p {
    margin: 0;
    font-size: 0.86rem;
    color: var(--muted);
}

/* ---------- Challenge ---------- */

.challenge-panel {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 32px;
    align-items: center;
    padding: 2.2rem;
    background:
        linear-gradient(135deg, rgba(90, 209, 255, 0.08), transparent 60%),
        var(--panel);
}

.challenge-panel h3 {
    margin: 0 0 0.6rem;
    font-family: var(--display);
    font-weight: 700;
    font-size: clamp(1.8rem, 3vw, 2.4rem);
    letter-spacing: 0.06em;
    color: #fff;
}

.challenge-panel p {
    margin: 0 0 1.4rem;
    color: var(--text);
}

.streams {
    display: grid;
    gap: 14px;
}

.stream {
    display: flex;
    gap: 1rem;
    align-items: center;
    padding: 1rem 1.2rem;
    border: 1px solid var(--line);
    background: rgba(5, 8, 13, 0.5);
}

.stream i {
    font-size: 1.5rem;
    color: var(--cyan);
    width: 1.8rem;
    text-align: center;
}

.stream small {
    display: block;
    font-family: var(--mono);
    font-size: 0.7rem;
    letter-spacing: 0.16em;
    color: var(--amber);
    text-transform: uppercase;
}

.stream strong {
    font-family: var(--display);
    font-size: 1.08rem;
    color: #fff;
}

@media (max-width: 900px) {
    .challenge-panel { grid-template-columns: 1fr; padding: 1.6rem; }
}

/* ---------- Sponsors ---------- */

.sponsors-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
}

.sponsor-card {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 140px;
    padding: 1.4rem;
    background: #f3f6f9;
    border: 1px solid var(--line);
    outline: 1px solid rgba(90, 209, 255, 0.18);
    outline-offset: 5px;
    transition: transform 0.25s ease, outline-color 0.25s ease;
}

.sponsor-card:hover {
    transform: translateY(-3px);
    outline-color: var(--cyan);
}

.sponsor-card img {
    max-height: 84px;
    object-fit: contain;
}

.sponsor-card img.logo-tall { max-height: 124px; }

@media (max-width: 760px) {
    .sponsors-grid { grid-template-columns: 1fr; }
}

/* ---------- Contact + footer ---------- */

.contact-panel {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1.2rem;
}

.contact-panel p {
    margin: 0;
    font-size: 1.05rem;
}

.site-footer {
    padding: 28px 24px;
    border-top: 1px solid var(--line);
    text-align: center;
    font-family: var(--mono);
    font-size: 0.76rem;
    letter-spacing: 0.08em;
    color: var(--muted);
}

@media (max-width: 640px) {
    .section { padding: 72px 16px; }
    .panel { padding: 1.2rem; }
}