:root {
    --bg: #fffdf6;
    --bg-soft: #fff4d8;
    --panel: rgba(255, 255, 255, 0.78);
    --panel-strong: rgba(255, 255, 255, 0.95);
    --text: #111827;
    --muted: #5d6472;
    --line: rgba(17, 24, 39, 0.12);
    --cyan: #00c2ff;
    --violet: #7c3aed;
    --amber: #ffb000;
    --pink: #ff4fa3;
    --green: #18c37e;
    --danger: #c1121f;
    --success: #087f5b;
    --radius: 28px;
    --max: 1160px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--text);
    background:
        radial-gradient(circle at 12% 8%, rgba(255, 176, 0, 0.28), transparent 26rem),
        radial-gradient(circle at 88% 7%, rgba(0, 194, 255, 0.22), transparent 28rem),
        radial-gradient(circle at 78% 54%, rgba(255, 79, 163, 0.16), transparent 28rem),
        linear-gradient(180deg, #fffdf6 0%, #fff8e8 48%, #ffffff 100%);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.5;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -1;
    opacity: 0.42;
    background-image:
        linear-gradient(rgba(17, 24, 39, 0.045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(17, 24, 39, 0.045) 1px, transparent 1px);
    background-size: 42px 42px;
}

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

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: min(var(--max), calc(100% - 40px));
    margin: 0 auto;
    padding: 22px 0;
    backdrop-filter: blur(18px);
}

.site-header::before {
    content: "";
    position: absolute;
    inset: 10px -18px;
    z-index: -1;
    border: 1px solid rgba(17, 24, 39, 0.08);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.72);
    box-shadow: 0 14px 60px rgba(17, 24, 39, 0.08);
}

.brand,
.nav {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand {
    font-weight: 800;
    letter-spacing: -0.03em;
}

.brand-mark {
    width: 18px;
    height: 18px;
    border-radius: 999px;
    background: conic-gradient(from 120deg, var(--amber), var(--pink), var(--cyan), var(--green), var(--amber));
    box-shadow: 0 0 32px rgba(255, 79, 163, 0.35);
}

.nav {
    color: var(--muted);
    font-size: 0.94rem;
}

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

.section-shell {
    width: min(var(--max), calc(100% - 40px));
    margin: 0 auto;
}

.hero {
    display: grid;
    grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.72fr);
    gap: 56px;
    align-items: center;
    min-height: 760px;
    padding: 70px 0 100px;
}

.eyebrow {
    margin: 0 0 16px;
    color: var(--cyan);
    font-size: 0.76rem;
    font-weight: 800;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

h1,
h2,
h3,
p {
    margin-top: 0;
}

h1 {
    max-width: 880px;
    margin-bottom: 28px;
    font-size: clamp(3.4rem, 9vw, 7.7rem);
    line-height: 0.88;
    letter-spacing: -0.08em;
}

h2 {
    margin-bottom: 22px;
    font-size: clamp(2.15rem, 5vw, 4.5rem);
    line-height: 0.96;
    letter-spacing: -0.065em;
}

h3 {
    margin-bottom: 16px;
    font-size: 1.5rem;
    letter-spacing: -0.035em;
}

.hero-lead {
    max-width: 720px;
    color: #303746;
    font-size: clamp(1.14rem, 2vw, 1.42rem);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin: 34px 0 20px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 52px;
    padding: 0 22px;
    border: 1px solid transparent;
    border-radius: 999px;
    font-weight: 800;
    transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

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

.button.primary {
    color: #ffffff;
    background: linear-gradient(135deg, #111827, var(--violet) 54%, var(--pink));
    box-shadow: 0 18px 42px rgba(124, 58, 237, 0.25);
}

.button.ghost {
    color: var(--text);
    border-color: rgba(17, 24, 39, 0.18);
    background: rgba(255, 255, 255, 0.82);
}

.button.full {
    width: 100%;
    border: 0;
    cursor: pointer;
}

.button:disabled {
    cursor: wait;
    opacity: 0.7;
    transform: none;
}

.hero-note,
.privacy-note,
.site-footer {
    color: var(--muted);
    font-size: 0.95rem;
}

.idea-card {
    position: relative;
    overflow: hidden;
    min-height: 500px;
    padding: 34px;
    border: 2px solid rgba(17, 24, 39, 0.1);
    border-radius: calc(var(--radius) + 10px);
    background:
        radial-gradient(circle at 20% 18%, rgba(255, 255, 255, 0.9), transparent 18rem),
        linear-gradient(145deg, #ffe066, #ff7ac2 48%, #7dd3fc);
    box-shadow: 0 30px 80px rgba(17, 24, 39, 0.18);
    transform: rotate(1.4deg);
}

.idea-card-label {
    color: #111827;
    font-weight: 800;
}

.idea-card blockquote {
    position: relative;
    z-index: 2;
    margin: 70px 0 110px;
    font-size: clamp(2rem, 4vw, 3.8rem);
    font-weight: 850;
    line-height: 0.98;
    letter-spacing: -0.07em;
    text-shadow: 0 2px 0 rgba(255, 255, 255, 0.3);
}

.orb {
    position: absolute;
    border-radius: 999px;
    filter: blur(8px);
    opacity: 0.72;
}

.orb-one {
    top: 60px;
    right: -54px;
    width: 180px;
    height: 180px;
    background: rgba(255, 255, 255, 0.62);
}

.orb-two {
    bottom: 120px;
    left: -60px;
    width: 130px;
    height: 130px;
    background: rgba(255, 255, 255, 0.5);
}

.spark {
    position: absolute;
    z-index: 1;
    width: 86px;
    height: 86px;
    background: #111827;
    clip-path: polygon(50% 0, 61% 33%, 96% 21%, 70% 50%, 96% 79%, 61% 67%, 50% 100%, 39% 67%, 4% 79%, 30% 50%, 4% 21%, 39% 33%);
}

.spark-one {
    top: 22px;
    left: 28px;
    transform: rotate(-12deg) scale(0.7);
}

.spark-two {
    right: 34px;
    bottom: 34px;
    transform: rotate(18deg) scale(0.5);
}

.creative-scene {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.bubble {
    position: absolute;
    z-index: 3;
    display: inline-flex;
    align-items: center;
    min-height: 42px;
    padding: 0 16px;
    border: 2px solid #111827;
    border-radius: 999px;
    color: #111827;
    background: rgba(255, 255, 255, 0.82);
    font-size: 0.9rem;
    font-weight: 900;
    box-shadow: 6px 6px 0 rgba(17, 24, 39, 0.16);
}

.bubble-a {
    top: 88px;
    left: 38px;
    transform: rotate(-8deg);
}

.bubble-b {
    top: 134px;
    right: 20px;
    transform: rotate(8deg);
}

.bubble-c {
    right: 54px;
    bottom: 148px;
    transform: rotate(-6deg);
}

.bubble-d {
    left: 50px;
    bottom: 96px;
    transform: rotate(7deg);
}

.signal-grid {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.signal-grid span,
.audience-list span,
.outcome-list span {
    border: 1px solid rgba(17, 24, 39, 0.14);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.7);
}

.signal-grid span {
    padding: 14px 16px;
    text-align: center;
    font-weight: 800;
}

.split,
.band-grid,
.audience-grid,
.registration-section {
    display: grid;
    grid-template-columns: 0.86fr 1.14fr;
    gap: 70px;
    align-items: start;
    padding: 100px 0;
}

.prose,
.list-panel,
.section-heading p,
.registration-copy p,
.place-copy p {
    color: #3d4656;
    font-size: 1.08rem;
}

.contrast-band {
    margin: 30px 0;
    border-block: 1px solid var(--line);
    background: linear-gradient(90deg, rgba(255, 176, 0, 0.16), rgba(0, 194, 255, 0.14), rgba(255, 79, 163, 0.13));
}

.list-panel,
.outcome-panel,
.registration-form,
.card {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--panel);
    box-shadow: 0 18px 60px rgba(17, 24, 39, 0.1);
}

.vibe-strip {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-top: -66px;
    margin-bottom: 80px;
}

.vibe-card {
    min-height: 170px;
    padding: 22px;
    border: 2px solid #111827;
    border-radius: 28px;
    color: #111827;
    box-shadow: 8px 8px 0 rgba(17, 24, 39, 0.16);
}

.vibe-card span {
    display: inline-flex;
    margin-bottom: 22px;
    font-size: 0.78rem;
    font-weight: 900;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.vibe-card strong {
    display: block;
    max-width: 240px;
    font-size: clamp(1.45rem, 3vw, 2rem);
    line-height: 0.98;
    letter-spacing: -0.05em;
}

.vibe-card.sun {
    background: #ffe066;
}

.vibe-card.blue {
    background: #7dd3fc;
}

.vibe-card.pink {
    background: #ff9bd2;
}

.list-panel {
    padding: 34px;
}

.section-heading {
    max-width: 760px;
    margin-bottom: 36px;
}

.section-heading.compact {
    margin-bottom: 0;
}

.cards {
    display: grid;
    gap: 18px;
}

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

.card {
    padding: 30px;
    background: #ffffff;
}

.card:nth-child(1) {
    border-top: 8px solid var(--amber);
}

.card:nth-child(2) {
    border-top: 8px solid var(--cyan);
}

.card:nth-child(3) {
    border-top: 8px solid var(--pink);
}

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

.card-number {
    display: inline-flex;
    margin-bottom: 42px;
    color: var(--cyan);
    font-weight: 900;
    letter-spacing: 0.08em;
}

.audience-list,
.outcome-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.audience-list span,
.outcome-list span {
    padding: 12px 15px;
    color: #111827;
}

.outcome-section {
    padding: 40px 0 110px;
}

.outcome-panel {
    padding: clamp(30px, 6vw, 68px);
    background:
        radial-gradient(circle at 85% 20%, rgba(255, 176, 0, 0.24), transparent 24rem),
        radial-gradient(circle at 12% 82%, rgba(0, 194, 255, 0.18), transparent 20rem),
        var(--panel);
}

.place-section {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: 48px;
    align-items: center;
    padding: 96px 0 40px;
}

.organizer-section {
    display: grid;
    grid-template-columns: 0.72fr 1.28fr;
    gap: 48px;
    align-items: center;
    padding: 30px 0 110px;
}

.organizer-photo {
    display: grid;
    place-items: center;
    min-height: 320px;
    padding: 18px;
    border: 2px solid #111827;
    border-radius: 40px;
    color: #111827;
    background:
        radial-gradient(circle at 28% 28%, rgba(255, 255, 255, 0.95), transparent 5rem),
        radial-gradient(circle at 72% 62%, rgba(255, 79, 163, 0.5), transparent 8rem),
        linear-gradient(135deg, #ffe066, #7dd3fc 52%, #b6f3d5);
    box-shadow: 12px 12px 0 rgba(17, 24, 39, 0.14);
    transform: rotate(-1.2deg);
}

.organizer-photo img {
    display: block;
    width: 100%;
    max-width: 280px;
    height: 280px;
    min-height: 0;
    border: 2px solid #111827;
    border-radius: 28px;
    object-fit: cover;
    object-position: center;
    box-shadow: 8px 8px 0 rgba(17, 24, 39, 0.14);
}

.organizer-copy {
    padding: clamp(28px, 5vw, 58px);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.82);
    box-shadow: 0 18px 60px rgba(17, 24, 39, 0.1);
}

.organizer-copy p {
    color: #3d4656;
    font-size: 1.08rem;
}

.place-visual {
    position: relative;
    min-height: 360px;
    border: 2px solid #111827;
    border-radius: 40px;
    overflow: hidden;
    background:
        linear-gradient(135deg, rgba(255, 255, 255, 0.32) 25%, transparent 25%) 0 0 / 34px 34px,
        linear-gradient(135deg, #b6f3d5, #7dd3fc 45%, #ffe066);
    box-shadow: 12px 12px 0 rgba(17, 24, 39, 0.14);
}

.window-shape {
    position: absolute;
    right: 34px;
    bottom: 34px;
    width: 58%;
    height: 54%;
    border: 2px solid #111827;
    border-radius: 50% 50% 30px 30px;
    background: rgba(255, 255, 255, 0.8);
}

.dot {
    position: absolute;
    z-index: 2;
    border: 2px solid #111827;
    border-radius: 999px;
}

.dot-one {
    top: 40px;
    left: 40px;
    width: 86px;
    height: 86px;
    background: var(--pink);
}

.dot-two {
    top: 148px;
    left: 104px;
    width: 46px;
    height: 46px;
    background: #ffffff;
}

.dot-three {
    right: 42px;
    top: 62px;
    width: 68px;
    height: 68px;
    background: var(--amber);
}

.registration-section {
    align-items: stretch;
    padding-top: 40px;
}

.registration-form {
    display: grid;
    gap: 18px;
    padding: clamp(24px, 4vw, 40px);
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

label,
fieldset {
    display: grid;
    gap: 8px;
    margin: 0;
}

label span,
legend {
    color: #111827;
    font-size: 0.92rem;
    font-weight: 800;
}

input,
textarea {
    width: 100%;
    border: 1px solid rgba(17, 24, 39, 0.16);
    border-radius: 18px;
    outline: 0;
    padding: 14px 16px;
    color: var(--text);
    background: rgba(255, 255, 255, 0.86);
    font: inherit;
}

input:focus,
textarea:focus {
    border-color: var(--cyan);
    box-shadow: 0 0 0 4px rgba(103, 232, 249, 0.12);
}

fieldset {
    border: 1px solid rgba(17, 24, 39, 0.16);
    border-radius: 18px;
    padding: 16px;
}

.radio-row {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

.radio-row label {
    display: flex;
    grid-template-columns: auto 1fr;
    align-items: center;
    color: var(--muted);
}

.radio-row input {
    width: auto;
}

.hp-field {
    position: absolute;
    left: -10000px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.form-status {
    min-height: 24px;
    margin: 0;
    font-weight: 800;
}

.form-status.error {
    color: var(--danger);
}

.form-status.success {
    color: var(--success);
}

.final-cta {
    padding: 100px 0 120px;
    text-align: center;
}

.final-cta h2 {
    max-width: 900px;
    margin-inline: auto;
}

.site-footer {
    width: min(var(--max), calc(100% - 40px));
    margin: 0 auto;
    padding: 32px 0 44px;
    border-top: 1px solid var(--line);
}

@media (max-width: 900px) {
    .nav {
        display: none;
    }

    .hero,
    .split,
    .band-grid,
    .audience-grid,
    .organizer-section,
    .place-section,
    .registration-section,
    .three-columns {
        grid-template-columns: 1fr;
    }

    .hero {
        min-height: auto;
        padding-top: 46px;
    }

    .split,
    .band-grid,
    .audience-grid,
    .organizer-section,
    .registration-section {
        gap: 28px;
        padding: 70px 0;
    }
}

@media (max-width: 620px) {
    .site-header,
    .section-shell,
    .site-footer {
        width: min(100% - 28px, var(--max));
    }

    h1 {
        font-size: clamp(3rem, 16vw, 4.6rem);
    }

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

    .idea-card {
        min-height: auto;
    }

    .idea-card blockquote {
        margin: 54px 0 70px;
    }
}