/* alvavinci corporate site */

:root {
    --color-bg: #f7fbff;
    --color-bg-alt: #edf7ff;
    --color-surface: #ffffff;
    --color-surface-soft: #f4f9ff;
    --color-text: #132033;
    --color-text-secondary: #506176;
    --color-muted: #74839a;
    --color-primary: #16253b;
    --color-accent: #3a6df0;
    --color-cyan: #18c7df;
    --color-violet: #8b7cf6;
    --color-border: #dce8f5;
    --color-border-strong: #b8cbe2;
    --color-white: #ffffff;
    --shadow-soft: 0 18px 52px rgba(22, 37, 59, 0.10);
    --shadow-card: 0 16px 36px rgba(22, 37, 59, 0.08);
    --font-sans: 'Inter', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-jp: 'Noto Sans JP', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --max-width: 1120px;
    --header-height: 72px;
    --section-padding: 112px;
    --transition: 0.24s ease;
}

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    min-width: 320px;
    background:
        radial-gradient(circle at 12% 12%, rgba(24, 199, 223, 0.12), transparent 28rem),
        radial-gradient(circle at 82% 4%, rgba(139, 124, 246, 0.13), transparent 30rem),
        linear-gradient(180deg, #f7fbff 0%, #ffffff 45%, #f4f9ff 100%);
    color: var(--color-text);
    font-family: var(--font-jp);
    line-height: 1.8;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body.nav-open {
    overflow: hidden;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition), border-color var(--transition), background var(--transition), transform var(--transition), box-shadow var(--transition);
}

a:focus-visible,
button:focus-visible {
    outline: 3px solid rgba(58, 109, 240, 0.42);
    outline-offset: 4px;
}

ul {
    list-style: none;
}

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

picture {
    display: block;
}

button {
    appearance: none;
    border: 0;
    background: transparent;
    color: inherit;
    cursor: pointer;
    font: inherit;
}

.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 32px;
}

.hide-mobile {
    display: inline;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
    width: 100%;
    height: var(--header-height);
    border-bottom: 1px solid rgba(220, 232, 245, 0.72);
    background: rgba(247, 251, 255, 0.82);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    transition: box-shadow var(--transition), background var(--transition);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.92);
    box-shadow: 0 10px 30px rgba(22, 37, 59, 0.07);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo,
.footer-logo {
    color: var(--color-primary);
    font-family: var(--font-sans);
    font-size: 1.25rem;
    font-weight: 700;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 28px;
}

.nav-link {
    position: relative;
    color: var(--color-text-secondary);
    font-size: 0.88rem;
    font-weight: 600;
}

.nav-link::after {
    position: absolute;
    right: 0;
    bottom: -8px;
    left: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-cyan));
    content: '';
    opacity: 0;
    transform: translateY(4px);
    transition: opacity var(--transition), transform var(--transition);
}

.nav-link:hover {
    color: var(--color-primary);
}

.nav-link:hover::after {
    opacity: 1;
    transform: translateY(0);
}

.language-switch {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-left: 24px;
    border: 1px solid rgba(184, 203, 226, 0.78);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.68);
    padding: 4px;
    color: var(--color-muted);
    font-family: var(--font-sans);
    font-size: 0.72rem;
    font-weight: 700;
    line-height: 1;
}

.language-switch a,
.language-switch span {
    display: inline-flex;
    min-width: 30px;
    min-height: 28px;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
}

.language-switch a:hover {
    color: var(--color-accent);
}

.language-switch .is-active {
    background: var(--color-primary);
    color: var(--color-white);
}

.hamburger {
    position: relative;
    z-index: 1001;
    display: none;
    width: 32px;
    height: 24px;
}

.hamburger span {
    position: absolute;
    left: 0;
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-primary);
    transition: transform var(--transition), opacity var(--transition);
}

.hamburger span:nth-child(1) {
    top: 1px;
}

.hamburger span:nth-child(2) {
    top: 11px;
}

.hamburger span:nth-child(3) {
    top: 21px;
}

.hamburger.active span:nth-child(1) {
    transform: translateY(10px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: translateY(-10px) rotate(-45deg);
}

/* Buttons */
.btn {
    display: inline-flex;
    min-height: 48px;
    align-items: center;
    justify-content: center;
    gap: 10px;
    border: 1px solid transparent;
    border-radius: 6px;
    padding: 12px 24px;
    font-size: 0.92rem;
    font-weight: 700;
    line-height: 1.4;
    text-align: center;
    overflow-wrap: anywhere;
}

.btn--primary {
    background: linear-gradient(135deg, var(--color-accent), var(--color-cyan));
    color: var(--color-white);
    box-shadow: 0 14px 28px rgba(58, 109, 240, 0.22);
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 18px 36px rgba(58, 109, 240, 0.28);
}

.btn--secondary {
    border-color: var(--color-border-strong);
    background: rgba(255, 255, 255, 0.72);
    color: var(--color-primary);
}

.btn--secondary:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

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

.btn--form {
    display: inline-flex;
    align-items: center;
}

.btn--form svg {
    flex-shrink: 0;
}

/* Hero */
.hero {
    position: relative;
    min-height: 100vh;
    overflow: hidden;
}

#heroCanvas {
    position: absolute;
    inset: 0;
    z-index: 0;
    width: 100%;
    height: 100%;
    opacity: 0.75;
}

.hero::after {
    position: absolute;
    inset: auto -20% -28% -20%;
    z-index: 0;
    height: 45%;
    background: linear-gradient(180deg, rgba(247, 251, 255, 0), var(--color-bg));
    content: '';
}

.hero-inner {
    position: relative;
    z-index: 1;
    display: grid;
    min-height: 100vh;
    grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
    gap: 56px;
    align-items: center;
    padding-top: var(--header-height);
    padding-bottom: 80px;
}

.hero-content {
    max-width: 640px;
}

.hero-label,
.section-label,
.ma-hero-label,
.sora-portrait-caption,
.media-brand-badge,
.cd-step-number,
.vision-number {
    display: block;
    color: var(--color-accent);
    font-family: var(--font-sans);
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.hero-label {
    margin-bottom: 22px;
}

.hero-title {
    color: var(--color-primary);
    font-size: 3.75rem;
    font-weight: 700;
    line-height: 1.18;
}

.hero-description {
    max-width: 600px;
    margin-top: 28px;
    color: var(--color-text-secondary);
    font-size: 1.04rem;
    line-height: 2;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 36px;
}

.hero-metrics {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
    margin-top: 44px;
}

.hero-metrics div {
    min-height: 84px;
    border: 1px solid rgba(184, 203, 226, 0.72);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.62);
    padding: 16px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.metric-title {
    color: var(--color-primary);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 700;
}

.metric-text {
    margin-top: 6px;
    color: var(--color-muted);
    font-size: 0.82rem;
}

.hero-visual {
    position: relative;
    display: flex;
    min-height: 520px;
    align-items: center;
    justify-content: center;
}

.alvin-card {
    position: relative;
    z-index: 2;
    width: min(100%, 430px);
    animation: alvinFloat 5.4s ease-in-out infinite;
}

.alvin-image {
    width: 100%;
    height: auto;
    filter: drop-shadow(0 32px 48px rgba(58, 109, 240, 0.22));
}

.alvin-orbit {
    position: absolute;
    inset: 8%;
    z-index: 1;
    border: 1px solid rgba(58, 109, 240, 0.22);
    border-radius: 50%;
    animation: orbitSpin 18s linear infinite;
}

.alvin-orbit::before,
.alvin-orbit::after {
    position: absolute;
    border-radius: 50%;
    content: '';
}

.alvin-orbit::before {
    top: 14%;
    left: 8%;
    width: 14px;
    height: 14px;
    background: var(--color-cyan);
    box-shadow: 0 0 28px rgba(24, 199, 223, 0.72);
}

.alvin-orbit::after {
    right: 12%;
    bottom: 18%;
    width: 10px;
    height: 10px;
    background: var(--color-violet);
    box-shadow: 0 0 28px rgba(139, 124, 246, 0.72);
}

.agent-status {
    position: absolute;
    right: 4%;
    bottom: 14%;
    z-index: 3;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    border: 1px solid rgba(184, 203, 226, 0.86);
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.84);
    padding: 12px 14px;
    color: var(--color-text-secondary);
    font-family: var(--font-sans);
    font-size: 0.78rem;
    font-weight: 700;
    box-shadow: var(--shadow-card);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

.status-dot {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--color-cyan);
    box-shadow: 0 0 0 6px rgba(24, 199, 223, 0.16);
}

.hero-scroll {
    position: absolute;
    bottom: 32px;
    left: 50%;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    transform: translateX(-50%);
}

.hero-scroll span {
    color: var(--color-muted);
    font-family: var(--font-sans);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.hero-scroll-line {
    position: relative;
    width: 1px;
    height: 46px;
    overflow: hidden;
    background: var(--color-border-strong);
}

.hero-scroll-line::after {
    position: absolute;
    top: -100%;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-accent);
    content: '';
    animation: scrollLine 2s ease-in-out infinite;
}

/* Sections */
.section {
    position: relative;
    padding: var(--section-padding) 0;
}

.section--alt {
    background:
        linear-gradient(180deg, rgba(237, 247, 255, 0.94), rgba(247, 251, 255, 0.94)),
        linear-gradient(90deg, rgba(58, 109, 240, 0.05) 1px, transparent 1px),
        linear-gradient(0deg, rgba(24, 199, 223, 0.04) 1px, transparent 1px);
    background-size: auto, 48px 48px, 48px 48px;
}

.section-header {
    max-width: 760px;
    margin-bottom: 56px;
}

.section-label {
    margin-bottom: 14px;
}

.section-title {
    color: var(--color-primary);
    font-size: 2.25rem;
    font-weight: 700;
    line-height: 1.45;
}

.section-lead {
    margin-top: 18px;
    color: var(--color-text-secondary);
    font-size: 1rem;
    line-height: 2;
}

.split-section {
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: 64px;
    align-items: start;
}

.principle-stack {
    color: var(--color-text-secondary);
}

.principle-stack p + p {
    margin-top: 18px;
}

.check-list {
    margin-top: 28px;
    border-top: 1px solid var(--color-border);
}

.check-list li,
.ma-list-item {
    position: relative;
    padding: 18px 0 18px 34px;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text-secondary);
}

.check-list li::before {
    position: absolute;
    top: 23px;
    left: 0;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-accent), var(--color-cyan));
    content: '';
}

.check-list li::after {
    position: absolute;
    top: 28px;
    left: 6px;
    width: 6px;
    height: 9px;
    border-right: 2px solid var(--color-white);
    border-bottom: 2px solid var(--color-white);
    content: '';
    transform: rotate(45deg);
}

/* Cards */
.about-grid,
.business-grid,
.vision-grid,
.cd-grid,
.ma-features,
.media-brand-grid {
    display: grid;
    gap: 24px;
}

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

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

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

.ma-features,
.media-brand-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

.about-panel,
.business-card,
.ma-feature,
.media-brand-card,
.group-node,
.ai-org-node,
.ai-org-inline-member,
.cd-step,
.vision-item {
    border: 1px solid var(--color-border);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.86);
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.7) inset;
}

.about-panel,
.business-card,
.ma-feature,
.group-node,
.ai-org-node,
.ai-org-inline-member {
    padding: 30px;
}

.about-panel,
.business-card,
.ma-feature,
.media-brand-card,
.group-node {
    transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.about-panel:hover,
.business-card:hover,
.ma-feature:hover,
.media-brand-card:hover,
.group-node:hover {
    border-color: rgba(58, 109, 240, 0.42);
    box-shadow: var(--shadow-card);
    transform: translateY(-4px);
}

.panel-number {
    display: inline-flex;
    width: 36px;
    height: 36px;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    background: rgba(58, 109, 240, 0.1);
    color: var(--color-accent);
    font-family: var(--font-sans);
    font-size: 0.82rem;
    font-weight: 700;
}

.about-panel h3,
.business-card-title,
.ma-feature h3,
.vision-item h3,
.cd-step h3,
.media-brand-card h3,
.group-node h3,
.ai-org-node h3,
.ai-org-inline-member h3 {
    color: var(--color-primary);
    font-size: 1.02rem;
    font-weight: 700;
    line-height: 1.6;
}

.about-panel h3 {
    margin-top: 22px;
}

.about-panel p,
.business-card-text,
.ma-feature p,
.vision-item p,
.cd-step p,
.media-brand-text,
.group-node p,
.group-node li,
.ai-org-node p,
.ai-org-node li,
.ai-org-inline-member li {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    line-height: 1.85;
}

.about-panel p,
.business-card-text,
.ma-feature p,
.vision-item p,
.cd-step p,
.ai-org-node p {
    margin-top: 12px;
}

.business-card {
    position: relative;
    display: block;
    min-height: 260px;
}

.business-card--link:focus-visible {
    outline: 3px solid rgba(58, 109, 240, 0.42);
    outline-offset: 4px;
}

.business-card-icon {
    display: inline-flex;
    min-width: 46px;
    max-width: 100%;
    height: 46px;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    background: linear-gradient(135deg, rgba(58, 109, 240, 0.12), rgba(24, 199, 223, 0.14));
    color: var(--color-accent);
    font-family: var(--font-sans);
    font-size: 0.82rem;
    font-weight: 800;
    padding: 0 10px;
    white-space: nowrap;
}

.business-card-title {
    margin-top: 22px;
}

.business-card-link-label,
.media-brand-link {
    display: inline-flex;
    margin-top: 18px;
    color: var(--color-accent);
    font-size: 0.86rem;
    font-weight: 700;
}

.business-card-link-label::after,
.media-brand-link::after {
    margin-left: 8px;
    content: '→';
}

.business-card--link:hover .business-card-link-label,
.media-brand-link:hover {
    color: var(--color-cyan);
}

.pipeline-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.pipeline-list li {
    display: inline-flex;
    align-items: center;
    border: 1px solid var(--color-border);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.78);
    padding: 9px 14px;
    color: var(--color-text-secondary);
    font-family: var(--font-sans);
    font-size: 0.84rem;
    font-weight: 700;
}

/* Group */
.group-structure {
    max-width: 760px;
    margin: 0 auto;
}

.group-parent,
.group-child {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.group-node {
    width: 100%;
    text-align: center;
}

.group-node--parent {
    max-width: 460px;
    border-color: rgba(58, 109, 240, 0.48);
    background: linear-gradient(135deg, #16253b, #25446a);
    color: var(--color-white);
}

.group-node--parent h3,
.group-node--parent p {
    color: var(--color-white);
}

.group-node ul {
    margin-top: 10px;
}

.group-connector {
    position: relative;
    width: 1px;
    height: 46px;
    background: var(--color-border-strong);
}

.group-connector::after {
    position: absolute;
    bottom: 0;
    left: -24px;
    width: 49px;
    height: 1px;
    background: var(--color-border-strong);
    content: '';
}

.group-children {
    position: relative;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px;
}

.group-children::before {
    position: absolute;
    top: 0;
    left: 25%;
    width: 50%;
    height: 1px;
    background: var(--color-border-strong);
    content: '';
}

.group-child::before {
    width: 1px;
    height: 30px;
    background: var(--color-border-strong);
    content: '';
}

/* Message */
.message-layout {
    display: grid;
    grid-template-columns: minmax(0, 0.75fr) minmax(0, 1fr);
    gap: 64px;
}

.message-content,
.cd-philosophy,
.cd-intro {
    max-width: 760px;
}

.message-quote,
.cd-philosophy-quote {
    border-left: 3px solid var(--color-accent);
    padding-left: 28px;
}

.message-quote p,
.cd-philosophy-quote p,
.cd-intro p {
    color: var(--color-text-secondary);
    font-size: 1rem;
    line-height: 2;
}

.message-quote p + p,
.cd-philosophy-quote p + p {
    margin-top: 20px;
}

/* Footer */
.footer {
    border-top: 1px solid var(--color-border);
    background: rgba(255, 255, 255, 0.72);
    padding: 56px 0 40px;
}

.footer-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    text-align: center;
}

.footer-tagline,
.footer-copyright {
    color: var(--color-text-secondary);
    font-size: 0.86rem;
}

.footer-tagline {
    margin-top: 8px;
}

.footer-nav ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 24px;
}

.footer-nav a {
    color: var(--color-text-secondary);
    font-size: 0.86rem;
    font-weight: 600;
}

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

/* Lower pages */
.ma-page {
    font-family: var(--font-jp);
}

.ma-hero {
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid var(--color-border);
    padding: calc(var(--header-height) + 88px) 0 88px;
    background:
        radial-gradient(circle at 82% 24%, rgba(24, 199, 223, 0.16), transparent 26rem),
        radial-gradient(circle at 16% 8%, rgba(139, 124, 246, 0.14), transparent 25rem),
        linear-gradient(180deg, var(--color-bg), var(--color-surface));
}

.ma-hero::after {
    position: absolute;
    inset: auto -10% -35% -10%;
    height: 50%;
    background: linear-gradient(180deg, rgba(247, 251, 255, 0), rgba(24, 199, 223, 0.08));
    content: '';
}

.ma-hero .container {
    position: relative;
    z-index: 1;
}

.ma-hero-content {
    max-width: 760px;
}

.ma-hero-label {
    margin-bottom: 18px;
}

.ma-hero-title {
    color: var(--color-primary);
    font-size: 2.35rem;
    font-weight: 700;
    line-height: 1.45;
}

.ma-hero-description,
.cd-hero-sub {
    margin-top: 18px;
    color: var(--color-text-secondary);
    font-size: 1rem;
    line-height: 2;
}

.cd-hero-sub {
    max-width: 680px;
    margin-bottom: 34px;
}

.ma-list {
    max-width: 760px;
    border-top: 1px solid var(--color-border);
}

.ma-list-item {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    padding-left: 0;
}

.ma-list-icon {
    flex: 0 0 auto;
    display: inline-flex;
    width: 24px;
    height: 24px;
    align-items: center;
    justify-content: center;
    margin-top: 3px;
    color: var(--color-accent);
}

.ma-two-col {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 64px;
}

.ma-contact {
    max-width: 560px;
    margin: 0 auto;
    text-align: center;
}

.ma-contact .section-title {
    margin-bottom: 18px;
}

.ma-contact-text,
.ma-contact-email {
    color: var(--color-text-secondary);
    font-size: 0.96rem;
    line-height: 1.9;
}

.ma-contact-email {
    display: inline-flex;
    margin: 18px 0 28px;
    color: var(--color-accent);
    font-weight: 700;
}

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

.cd-step,
.vision-item {
    padding: 28px;
}

.cd-step-number,
.vision-number {
    margin-bottom: 12px;
}

/* Sora page */
.sora-hero .container {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(280px, 0.72fr);
    gap: 56px;
    align-items: center;
}

.sora-hero-visual {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.sora-portrait-card {
    width: clamp(240px, 30vw, 340px);
    aspect-ratio: 1 / 1;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    background: linear-gradient(180deg, rgba(58, 109, 240, 0.08), rgba(24, 199, 223, 0.08));
    overflow: hidden;
    padding: 10px;
    box-shadow: var(--shadow-card);
}

.sora-portrait-image {
    width: 100%;
    height: 100%;
    border-radius: 6px;
    object-fit: cover;
    object-position: center;
}

.sora-portrait-caption {
    margin-top: 16px;
}

/* Novel page */
.novel-hero-inner {
    display: grid;
    grid-template-columns: minmax(0, 0.95fr) minmax(280px, 0.72fr);
    gap: 56px;
    align-items: center;
}

.novel-hero-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 420px;
}

.novel-hero-visual::before {
    position: absolute;
    inset: 2% 0 0;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.78), rgba(237, 247, 255, 0.5) 44%, rgba(24, 199, 223, 0.1) 68%, transparent 80%);
    content: '';
    filter: blur(10px);
}

.novel-hero-visual picture {
    position: relative;
    z-index: 1;
    display: block;
    width: min(100%, 390px);
    aspect-ratio: 1 / 1;
    background: transparent;
    overflow: visible;
}

.novel-hero-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: saturate(0.88) brightness(1.08) contrast(0.98) drop-shadow(0 28px 52px rgba(58, 109, 240, 0.2));
}

.ai-org-chart {
    position: relative;
}

.ai-org-top,
.ai-org-lead {
    display: flex;
    justify-content: center;
}

.ai-org-stem {
    width: 1px;
    height: 36px;
    margin: 16px auto;
    background: var(--color-border-strong);
}

.ai-org-branches {
    position: relative;
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 18px;
    padding-top: 34px;
}

.ai-org-branches::before {
    position: absolute;
    top: 0;
    left: 10%;
    width: 70%;
    height: 1px;
    background: var(--color-border-strong);
    content: '';
}

.ai-org-branch--media {
    grid-column: span 2;
}

.ai-org-branch {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.ai-org-branch::before {
    position: absolute;
    top: -34px;
    width: 1px;
    height: 34px;
    background: var(--color-border-strong);
    content: '';
}

.ai-org-node {
    width: 100%;
    text-align: center;
}

.ai-org-node--top,
.ai-org-node--lead {
    max-width: 380px;
}

.ai-org-node--lead {
    border-color: rgba(58, 109, 240, 0.48);
}

.ai-org-lead-image {
    width: 88px;
    height: 88px;
    border-radius: 50%;
    object-fit: cover;
    margin: 0 auto 14px;
}

.ai-org-node ul,
.ai-org-inline-member ul {
    margin-top: 10px;
}

.ai-org-inline-team {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    margin-top: 18px;
    padding-top: 18px;
    border-top: 1px solid var(--color-border);
}

.ai-org-inline-member {
    padding: 18px 14px;
    background: var(--color-surface-soft);
}

.ai-org-subbranches {
    position: relative;
    display: grid;
    width: 100%;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    margin-top: 18px;
    padding-top: 28px;
}

.ai-org-subbranches::before {
    position: absolute;
    top: 0;
    left: 25%;
    width: 50%;
    height: 1px;
    background: var(--color-border-strong);
    content: '';
}

.ai-org-subbranch {
    position: relative;
}

.ai-org-subbranch::before {
    position: absolute;
    top: -28px;
    left: 50%;
    width: 1px;
    height: 28px;
    background: var(--color-border-strong);
    content: '';
}

/* Media page */
.media-brand-card {
    overflow: hidden;
    padding: 0;
}

.media-brand-visual {
    aspect-ratio: 16 / 7;
    overflow: hidden;
    background: var(--color-surface-soft);
}

.media-brand-visual-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.sora-portrait-card picture,
.sora-portrait-card img,
.media-brand-visual picture {
    width: 100%;
    height: 100%;
}

.media-brand-header,
.media-brand-text,
.media-brand-link {
    margin-right: 28px;
    margin-left: 28px;
}

.media-brand-header {
    margin-top: 26px;
    margin-bottom: 18px;
}

.media-brand-badge {
    display: inline-flex;
    margin-bottom: 12px;
    border: 1px solid rgba(58, 109, 240, 0.3);
    border-radius: 6px;
    background: rgba(58, 109, 240, 0.08);
    padding: 4px 10px;
}

.media-brand-handle {
    margin-top: 2px;
    color: var(--color-muted);
    font-size: 0.88rem;
}

.media-brand-text {
    margin-bottom: 22px;
}

.media-brand-link {
    margin-bottom: 28px;
}

.media-link-stack {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(22px);
    transition: opacity 0.68s ease, transform 0.68s ease;
    will-change: opacity, transform;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
    will-change: auto;
}

.delay-1 {
    transition-delay: 0.12s;
}

.delay-2 {
    transition-delay: 0.24s;
}

.delay-3 {
    transition-delay: 0.36s;
}

@keyframes alvinFloat {
    0%,
    100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-14px);
    }
}

@keyframes orbitSpin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

@keyframes scrollLine {
    0% {
        top: -100%;
    }
    50%,
    100% {
        top: 100%;
    }
}

/* Responsive */
@media (max-width: 1024px) {
    :root {
        --section-padding: 88px;
    }

    .hero-inner,
    .split-section,
    .message-layout,
    .sora-hero .container,
    .novel-hero-inner {
        grid-template-columns: 1fr;
    }

    .hero-visual {
        min-height: 420px;
        order: -1;
        margin-top: 24px;
    }

    .alvin-card {
        width: min(100%, 360px);
    }

    .about-grid,
    .business-grid,
    .ma-features,
    .media-brand-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

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

    .ai-org-branches::before {
        left: 25%;
        width: 50%;
    }

    .ai-org-branch--media {
        grid-column: 1 / -1;
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 64px;
        --section-padding: 72px;
    }

    .container {
        padding: 0 22px;
    }

    .hide-mobile {
        display: none;
    }

    .hamburger {
        display: block;
    }

    .language-switch {
        margin-left: auto;
        margin-right: 18px;
    }

    .nav {
        position: fixed;
        inset: 0;
        display: flex;
        align-items: center;
        justify-content: center;
        background: rgba(247, 251, 255, 0.96);
        opacity: 0;
        pointer-events: none;
        visibility: hidden;
        transition: opacity var(--transition), visibility var(--transition);
    }

    .nav.active {
        opacity: 1;
        pointer-events: auto;
        visibility: visible;
    }

    .nav-list {
        flex-direction: column;
        gap: 26px;
    }

    .nav-link {
        font-size: 1.06rem;
    }

    .hero-inner {
        min-height: auto;
        padding-top: calc(var(--header-height) + 52px);
        padding-bottom: 72px;
    }

    .hero-title {
        font-size: 2.35rem;
    }

    .hero-description {
        font-size: 0.96rem;
    }

    .hero-actions {
        flex-direction: column;
    }

    .hero-actions .btn {
        width: 100%;
    }

    .hero-metrics,
    .about-grid,
    .business-grid,
    .vision-grid,
    .cd-grid,
    .ma-features,
    .media-brand-grid,
    .ma-two-col,
    .cd-steps,
    .group-children,
    .ai-org-branches,
    .ai-org-inline-team,
    .ai-org-subbranches {
        grid-template-columns: 1fr;
    }

    .hero-visual {
        min-height: 320px;
    }

    .alvin-card {
        width: min(100%, 280px);
    }

    .novel-hero-inner {
        position: relative;
    }

    .novel-hero .ma-hero-content {
        position: relative;
        z-index: 2;
    }

    .novel-hero-visual {
        position: absolute;
        right: -80px;
        bottom: -36px;
        z-index: 0;
        width: 280px;
        min-height: 280px;
        opacity: 0.18;
        pointer-events: none;
    }

    .novel-hero-visual::before {
        inset: -8%;
        opacity: 0.72;
        filter: blur(14px);
    }

    .novel-hero-visual picture {
        width: 100%;
    }

    .agent-status {
        right: auto;
        bottom: 4%;
        left: 50%;
        width: max-content;
        max-width: calc(100vw - 44px);
        transform: translateX(-50%);
    }

    .hero-scroll {
        display: none;
    }

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

    .section-title,
    .ma-hero-title {
        font-size: 1.75rem;
    }

    .about-panel,
    .business-card,
    .ma-feature,
    .group-node,
    .ai-org-node {
        padding: 24px;
    }

    .group-children::before,
    .group-connector::after,
    .ai-org-branches::before,
    .ai-org-branch::before,
    .ai-org-subbranches::before,
    .ai-org-subbranch::before {
        display: none;
    }

    .group-child::before {
        height: 18px;
    }

    .ma-hero {
        padding: calc(var(--header-height) + 52px) 0 56px;
    }

    .footer-nav ul {
        gap: 18px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-metrics div {
        min-height: auto;
    }

    .btn {
        padding-right: 18px;
        padding-left: 18px;
    }

    .media-brand-header,
    .media-brand-text,
    .media-brand-link {
        margin-right: 22px;
        margin-left: 22px;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
    }

    #heroCanvas {
        display: none;
    }

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