:root {
    --ink: #171713;
    --ink-soft: #3f433d;
    --muted: #6e756f;
    --paper: #f7f7f2;
    --paper-warm: #efeee6;
    --surface: #ffffff;
    --surface-2: #e6ebe3;
    --line: #d7ddd2;
    --line-strong: #aeb9ad;
    --teal: #0d6f61;
    --teal-dark: #06463f;
    --teal-soft: #d9ece8;
    --amber: #c98221;
    --clay: #a75437;
    --charcoal: #232521;
    --shadow: 0 18px 45px rgba(24, 27, 22, 0.12);
    --shadow-soft: 0 8px 24px rgba(24, 27, 22, 0.08);
    --radius: 8px;
    --radius-sm: 4px;
    --header-height: 76px;
    --transition: 180ms ease;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
}

body {
    min-width: 320px;
    color: var(--ink);
    background: var(--paper);
    font-family: "Manrope", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
}

body.menu-open {
    overflow: hidden;
}

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

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

button,
input,
textarea {
    font: inherit;
}

.container {
    width: min(1180px, calc(100% - 40px));
    margin: 0 auto;
}

.site-header {
    position: fixed;
    inset: 0 0 auto;
    height: var(--header-height);
    z-index: 100;
    background: rgba(247, 247, 242, 0.82);
    border-bottom: 1px solid rgba(215, 221, 210, 0.7);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    transition: box-shadow var(--transition), background var(--transition);
}

.site-header.scrolled {
    background: rgba(247, 247, 242, 0.96);
    box-shadow: var(--shadow-soft);
}

.nav {
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    color: var(--ink);
    font-weight: 800;
    white-space: nowrap;
}

.brand-mark {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

.brand strong {
    color: var(--teal);
}

.nav-links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    list-style: none;
    padding: 5px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.58);
}

.nav-links a {
    display: inline-flex;
    align-items: center;
    min-height: 38px;
    padding: 0 15px;
    border-radius: 999px;
    color: var(--ink-soft);
    font-size: 0.92rem;
    font-weight: 700;
    transition: color var(--transition), background var(--transition);
}

.nav-links a:hover,
.nav-links a:focus-visible {
    color: var(--ink);
    background: var(--teal-soft);
    outline: none;
}

.nav-action {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 0 18px;
    color: #fff;
    background: var(--charcoal);
    border-radius: 999px;
    font-weight: 800;
    transition: transform var(--transition), background var(--transition);
}

.nav-action:hover,
.nav-action:focus-visible {
    transform: translateY(-1px);
    background: var(--teal-dark);
    outline: none;
}

.language-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    min-height: 42px;
    padding: 4px;
    border: 1px solid var(--line);
    border-radius: 999px;
    color: var(--ink-soft);
    background: rgba(255, 255, 255, 0.58);
    cursor: pointer;
    font-family: "IBM Plex Mono", monospace;
    font-size: 0.78rem;
    font-weight: 600;
    transition: border-color var(--transition), background var(--transition), transform var(--transition);
}

.language-toggle:hover,
.language-toggle:focus-visible {
    transform: translateY(-1px);
    border-color: var(--line-strong);
    background: #fff;
    outline: none;
}

.language-toggle [data-lang-option] {
    display: inline-grid;
    min-width: 34px;
    min-height: 32px;
    place-items: center;
    border-radius: 999px;
    transition: color var(--transition), background var(--transition);
}

.language-toggle__divider {
    color: var(--line-strong);
}

html[data-lang="en"] .language-toggle [data-lang-option="en"],
html[data-lang="vi"] .language-toggle [data-lang-option="vi"] {
    color: #fff;
    background: var(--charcoal);
}

.language-toggle--mobile {
    align-self: flex-start;
    background: var(--paper);
}

.mobile-menu-btn,
.mobile-menu-close {
    display: none;
    border: 0;
    background: transparent;
    color: var(--ink);
    cursor: pointer;
}

.mobile-menu-btn {
    width: 44px;
    height: 44px;
    position: relative;
}

.mobile-menu-btn span {
    position: absolute;
    left: 10px;
    width: 24px;
    height: 2px;
    background: var(--ink);
    transition: transform var(--transition), opacity var(--transition), top var(--transition);
}

.mobile-menu-btn span:nth-child(1) {
    top: 14px;
}

.mobile-menu-btn span:nth-child(2) {
    top: 21px;
}

.mobile-menu-btn span:nth-child(3) {
    top: 28px;
}

.mobile-menu-btn.active span:nth-child(1) {
    top: 21px;
    transform: rotate(45deg);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    top: 21px;
    transform: rotate(-45deg);
}

.mobile-menu {
    position: fixed;
    top: 0;
    right: 0;
    z-index: 200;
    width: min(420px, 92vw);
    height: 100svh;
    padding: 24px;
    background: var(--surface);
    border-left: 1px solid var(--line);
    box-shadow: var(--shadow);
    transform: translateX(105%);
    transition: transform 240ms ease;
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.mobile-menu.active {
    transform: translateX(0);
}

.mobile-menu-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.mobile-menu-close {
    display: inline-grid;
    width: 44px;
    height: 44px;
    place-items: center;
    border: 1px solid var(--line);
    border-radius: 999px;
}

.mobile-menu nav {
    display: grid;
    gap: 10px;
}

.mobile-menu nav a {
    padding: 16px 0;
    border-bottom: 1px solid var(--line);
    font-size: 1.4rem;
    font-weight: 800;
}

.mobile-social {
    display: flex;
    gap: 10px;
    margin-top: auto;
}

.mobile-social a,
.contact-social a {
    display: inline-grid;
    width: 42px;
    height: 42px;
    place-items: center;
    color: var(--surface);
    background: var(--charcoal);
    border-radius: 999px;
    transition: transform var(--transition), background var(--transition);
}

.mobile-social a:hover,
.contact-social a:hover {
    transform: translateY(-2px);
    background: var(--teal);
}

.hero {
    position: relative;
    min-height: 88svh;
    padding: 148px 0 46px;
    display: flex;
    align-items: stretch;
    color: #fff;
    overflow: hidden;
    background: var(--charcoal);
}

.hero-bg,
.hero-shade {
    position: absolute;
    inset: 0;
}

.hero-bg {
    background-image: url("assets/satoriwave-ai-studio-hero.png");
    background-size: cover;
    background-position: center right;
    transform: scale(1.01);
}

.hero-shade {
    background:
        linear-gradient(90deg, rgba(16, 18, 15, 0.93) 0%, rgba(16, 18, 15, 0.75) 38%, rgba(16, 18, 15, 0.24) 76%, rgba(16, 18, 15, 0.12) 100%),
        linear-gradient(0deg, rgba(16, 18, 15, 0.62) 0%, rgba(16, 18, 15, 0.12) 42%, rgba(16, 18, 15, 0.22) 100%);
}

.hero-inner {
    position: relative;
    z-index: 1;
    display: flex;
    min-height: calc(88svh - 194px);
    flex-direction: column;
    justify-content: space-between;
    gap: 72px;
}

.hero-copy {
    max-width: 720px;
}

.eyebrow {
    color: var(--teal);
    font-family: "IBM Plex Mono", monospace;
    font-size: 0.82rem;
    font-weight: 600;
    text-transform: uppercase;
}

.hero .eyebrow {
    color: #a9e6dd;
}

.hero h1 {
    margin-top: 18px;
    font-size: 6.2rem;
    line-height: 0.98;
    font-weight: 800;
}

.hero-lede {
    max-width: 650px;
    margin-top: 28px;
    color: rgba(255, 255, 255, 0.82);
    font-size: 1.24rem;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 34px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-height: 52px;
    padding: 0 22px;
    border: 1px solid transparent;
    border-radius: 999px;
    font-weight: 800;
    cursor: pointer;
    transition: transform var(--transition), background var(--transition), border-color var(--transition), color var(--transition);
}

.btn:hover,
.btn:focus-visible {
    transform: translateY(-2px);
    outline: none;
}

.btn-primary {
    color: #fff;
    background: var(--teal);
    border-color: var(--teal);
}

.btn-primary:hover,
.btn-primary:focus-visible {
    background: var(--teal-dark);
    border-color: var(--teal-dark);
}

.btn-secondary {
    color: #fff;
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.28);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
    background: rgba(255, 255, 255, 0.16);
    border-color: rgba(255, 255, 255, 0.48);
}

.hero-metrics {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    width: min(760px, 100%);
    border-top: 1px solid rgba(255, 255, 255, 0.26);
}

.hero-metrics div {
    padding: 22px 28px 0 0;
}

.hero-metrics dt {
    font-size: 2.15rem;
    line-height: 1;
    font-weight: 800;
}

.hero-metrics dd {
    max-width: 170px;
    margin-top: 8px;
    color: rgba(255, 255, 255, 0.72);
    font-size: 0.92rem;
}

.signal-strip {
    background: var(--surface);
    border-bottom: 1px solid var(--line);
}

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

.signal-grid p {
    min-height: 122px;
    padding: 28px;
    border-right: 1px solid var(--line);
    color: var(--ink-soft);
    font-size: 1rem;
    font-weight: 700;
}

.signal-grid p:last-child {
    border-right: 0;
}

.signal-grid p > span {
    display: block;
    margin-bottom: 10px;
    color: var(--amber);
    font-family: "IBM Plex Mono", monospace;
    font-size: 0.78rem;
    font-weight: 600;
}

.signal-grid strong {
    display: block;
    color: var(--ink-soft);
    font: inherit;
}

.section {
    padding: 108px 0;
}

.section-heading {
    max-width: 760px;
    margin-bottom: 48px;
}

.section-heading.center {
    margin-inline: auto;
    text-align: center;
}

.section-heading h2 {
    margin-top: 10px;
    color: var(--ink);
    font-size: 3rem;
    line-height: 1.08;
    font-weight: 800;
}

.section-heading p:not(.eyebrow) {
    margin-top: 18px;
    color: var(--muted);
    font-size: 1.08rem;
}

.capabilities {
    background:
        linear-gradient(180deg, var(--paper) 0%, #fff 100%),
        radial-gradient(circle at 10% 10%, rgba(13, 111, 97, 0.08), transparent 28%);
}

.capability-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.capability-card,
.case-card,
.product-card,
.community-grid a {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
    box-shadow: 0 1px 0 rgba(24, 27, 22, 0.04);
}

.capability-card {
    min-height: 300px;
    padding: 26px;
    display: flex;
    flex-direction: column;
    transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.capability-card:hover {
    transform: translateY(-4px);
    border-color: var(--line-strong);
    box-shadow: var(--shadow-soft);
}

.capability-card i {
    display: inline-grid;
    width: 48px;
    height: 48px;
    place-items: center;
    margin-bottom: 28px;
    color: var(--teal-dark);
    background: var(--teal-soft);
    border-radius: var(--radius);
    font-size: 1.22rem;
}

.capability-card h3 {
    color: var(--ink);
    font-size: 1.32rem;
    line-height: 1.18;
}

.capability-card p {
    margin-top: 12px;
    color: var(--muted);
}

.capability-card span {
    margin-top: auto;
    padding-top: 24px;
    color: var(--clay);
    font-family: "IBM Plex Mono", monospace;
    font-size: 0.78rem;
}

.operating-model {
    color: #fff;
    background:
        linear-gradient(135deg, rgba(35, 37, 33, 0.98), rgba(6, 70, 63, 0.94)),
        linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px),
        linear-gradient(0deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: auto, 42px 42px, 42px 42px;
}

.model-layout,
.stack-layout,
.founder-layout,
.contact-layout {
    display: grid;
    grid-template-columns: 0.85fr 1.15fr;
    gap: 56px;
    align-items: start;
}

.operating-model .section-heading,
.model-intro {
    margin-bottom: 0;
}

.model-intro h2,
.model-intro p:not(.eyebrow) {
    color: #fff;
}

.model-intro p:not(.eyebrow) {
    color: rgba(255, 255, 255, 0.72);
}

.model-steps {
    display: grid;
    gap: 1px;
    background: rgba(255, 255, 255, 0.16);
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: var(--radius);
    overflow: hidden;
}

.model-content {
    display: grid;
    gap: 18px;
}

.model-visual {
    min-height: 260px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.06);
    box-shadow: 0 18px 45px rgba(0, 0, 0, 0.18);
}

.model-visual img {
    width: 100%;
    height: 100%;
    min-height: 260px;
    object-fit: cover;
}

.model-steps article {
    display: grid;
    grid-template-columns: 76px 1fr;
    gap: 20px;
    padding: 24px;
    background: rgba(255, 255, 255, 0.06);
}

.model-steps span {
    color: #f1c27a;
    font-family: "IBM Plex Mono", monospace;
    font-weight: 600;
}

.model-steps h3 {
    color: #fff;
    font-size: 1.22rem;
}

.model-steps p {
    grid-column: 2;
    color: rgba(255, 255, 255, 0.7);
}

.work {
    background: var(--paper);
}

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

.case-card {
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform var(--transition), box-shadow var(--transition);
}

.case-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-soft);
}

.case-image {
    height: 250px;
    background: var(--surface-2);
    overflow: hidden;
}

.case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 420ms ease;
}

.case-card:hover .case-image img {
    transform: scale(1.04);
}

.case-content {
    padding: 24px;
    display: flex;
    flex: 1;
    flex-direction: column;
}

.case-kicker {
    color: var(--teal);
    font-family: "IBM Plex Mono", monospace;
    font-size: 0.78rem;
    font-weight: 600;
}

.case-content h3 {
    margin-top: 10px;
    color: var(--ink);
    font-size: 1.34rem;
    line-height: 1.2;
}

.case-content > p:not(.case-kicker) {
    margin-top: 12px;
    color: var(--muted);
}

.case-stats {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    margin-top: auto;
    padding-top: 24px;
}

.case-stats div {
    border-top: 1px solid var(--line);
    padding-top: 14px;
}

.case-stats dt {
    color: var(--ink);
    font-size: 1.5rem;
    font-weight: 800;
}

.case-stats dd {
    color: var(--muted);
    font-size: 0.86rem;
}

.products {
    background: #11130f;
    color: #fff;
}

.products .section-heading h2 {
    color: #fff;
}

.products .section-heading p:not(.eyebrow) {
    color: rgba(255, 255, 255, 0.68);
}

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

.product-card {
    min-height: 390px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    color: #fff;
    background: rgba(255, 255, 255, 0.055);
    border-color: rgba(255, 255, 255, 0.14);
    transition: transform var(--transition), background var(--transition), border-color var(--transition);
}

.product-card:hover {
    transform: translateY(-4px);
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.26);
}

.product-card.featured {
    grid-column: span 2;
}

.product-card.wide {
    grid-column: 1 / -1;
    min-height: auto;
}

.product-topline {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 28px;
}

.product-topline i {
    display: inline-grid;
    width: 44px;
    height: 44px;
    place-items: center;
    color: #11130f;
    background: #e6f3ef;
    border-radius: var(--radius);
}

.product-topline span {
    color: rgba(255, 255, 255, 0.62);
    font-family: "IBM Plex Mono", monospace;
    font-size: 0.76rem;
    text-align: right;
}

.product-card h3 {
    font-size: 1.54rem;
    line-height: 1.12;
}

.product-subtitle {
    margin-top: 8px;
    color: #f1c27a;
    font-weight: 700;
}

.product-card p:not(.product-subtitle) {
    margin-top: 12px;
    color: rgba(255, 255, 255, 0.7);
}

.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 22px;
}

.tag-list span {
    padding: 6px 9px;
    color: rgba(255, 255, 255, 0.78);
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 700;
}

.product-card > a,
.product-links a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: auto;
    padding-top: 24px;
    color: #a9e6dd;
    font-weight: 800;
}

.product-links {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: auto;
}

.product-links a {
    margin-top: 0;
}

.stack {
    background: var(--surface);
}

.stack-list {
    display: grid;
    gap: 1px;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--line);
}

.stack-list div {
    display: grid;
    grid-template-columns: 175px 1fr;
    gap: 22px;
    padding: 24px;
    background: var(--surface);
}

.stack-list span {
    color: var(--teal-dark);
    font-family: "IBM Plex Mono", monospace;
    font-weight: 600;
}

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

.founder {
    background: var(--paper-warm);
}

.founder-layout {
    align-items: center;
}

.founder-photo {
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--line-strong);
    box-shadow: var(--shadow-soft);
}

.founder-photo img {
    width: 100%;
    height: 600px;
    object-fit: cover;
    object-position: center top;
}

.founder-copy h2 {
    margin-top: 10px;
    font-size: 3rem;
    line-height: 1.08;
}

.founder-copy p:not(.eyebrow) {
    margin-top: 18px;
    color: var(--ink-soft);
    font-size: 1.06rem;
}

.founder-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 28px;
}

.founder-badges span {
    padding: 10px 13px;
    color: var(--teal-dark);
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 999px;
    font-size: 0.88rem;
    font-weight: 800;
}

.contact {
    background: var(--surface);
}

.contact-layout {
    grid-template-columns: 0.72fr 1.28fr;
}

.contact-panel,
.contact-form-container {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--paper);
}

.contact-panel {
    padding: 28px;
}

.contact-panel h3,
.contact-form-container h3 {
    margin-bottom: 22px;
    font-size: 1.38rem;
}

.contact-panel > a,
.contact-panel > p {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 16px 0;
    border-top: 1px solid var(--line);
    color: var(--ink-soft);
    font-weight: 700;
}

.contact-panel i {
    width: 20px;
    margin-top: 3px;
    color: var(--teal);
}

.contact-social {
    display: flex;
    gap: 10px;
    margin-top: 26px;
}

.contact-social i {
    width: auto;
    margin: 0;
    color: #fff;
}

.contact-form-container {
    padding: 28px;
}

.contact-form {
    display: grid;
    gap: 18px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}

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

.contact-form input,
.contact-form textarea {
    width: 100%;
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-sm);
    background: #fff;
    color: var(--ink);
    padding: 14px 15px;
    resize: vertical;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.contact-form textarea {
    min-height: 160px;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--teal);
    box-shadow: 0 0 0 4px rgba(13, 111, 97, 0.12);
}

.contact-form .btn {
    justify-self: start;
}

.form-message,
.success-message {
    padding: 16px;
    border-radius: var(--radius);
    font-weight: 800;
}

.form-message.error {
    color: #7c2d12;
    background: #ffedd5;
    border: 1px solid #fed7aa;
}

.success-message {
    color: var(--teal-dark);
    background: var(--teal-soft);
    border: 1px solid #b9d9d3;
}

.community {
    background: var(--paper);
}

.community-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.community-grid a {
    min-height: 250px;
    padding: 28px;
    display: flex;
    flex-direction: column;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.community-grid a:hover {
    transform: translateY(-4px);
    border-color: var(--line-strong);
    box-shadow: var(--shadow-soft);
}

.community-grid i {
    color: var(--teal);
    font-size: 1.72rem;
}

.community-grid h3 {
    margin-top: 28px;
    font-size: 1.28rem;
}

.community-grid p {
    margin-top: 10px;
    color: var(--muted);
}

.footer {
    color: rgba(255, 255, 255, 0.72);
    background: #11130f;
    padding: 58px 0 0;
}

.footer .brand {
    color: #fff;
}

.footer-layout {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 56px;
    padding-bottom: 48px;
}

.footer-brand p {
    max-width: 360px;
    margin-top: 18px;
}

.footer-columns {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px;
}

.footer-columns div {
    display: grid;
    align-content: start;
    gap: 10px;
}

.footer h3 {
    margin-bottom: 8px;
    color: #fff;
    font-size: 1rem;
}

.footer a {
    transition: color var(--transition);
}

.footer a:hover {
    color: #fff;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    padding: 22px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    font-size: 0.92rem;
}

[data-reveal] {
    opacity: 1;
    transform: none;
    transition: opacity 520ms ease, transform 520ms ease;
}

[data-reveal].is-visible {
    opacity: 1;
    transform: translateY(0);
}

.hero [data-reveal] {
    opacity: 1;
    transform: none;
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
    }

    [data-reveal] {
        opacity: 1;
        transform: none;
    }
}

@media (max-width: 1100px) {
    .nav-links,
    .nav-action {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }

    .hero h1 {
        font-size: 5.1rem;
    }

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

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

    .product-card.featured,
    .product-card.wide {
        grid-column: span 2;
    }

    .model-layout,
    .stack-layout,
    .founder-layout,
    .contact-layout,
    .footer-layout {
        grid-template-columns: 1fr;
    }

    .founder-photo img {
        height: 520px;
    }
}

@media (max-width: 820px) {
    :root {
        --header-height: 68px;
    }

    .container {
        width: min(100% - 28px, 1180px);
    }

    .hero {
        min-height: 92svh;
        padding: 118px 0 34px;
    }

    .hero-bg {
        background-position: 62% center;
    }

    .hero-shade {
        background:
            linear-gradient(90deg, rgba(16, 18, 15, 0.95) 0%, rgba(16, 18, 15, 0.78) 58%, rgba(16, 18, 15, 0.42) 100%),
            linear-gradient(0deg, rgba(16, 18, 15, 0.7), rgba(16, 18, 15, 0.18));
    }

    .hero-inner {
        min-height: calc(92svh - 152px);
        gap: 44px;
    }

    .hero h1 {
        font-size: 4rem;
    }

    .hero-lede {
        font-size: 1.08rem;
    }

    .hero-metrics,
    .signal-grid,
    .capability-grid,
    .case-grid,
    .community-grid,
    .form-grid,
    .footer-columns {
        grid-template-columns: 1fr;
    }

    .hero-metrics div {
        padding: 18px 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.16);
    }

    .hero-metrics div:last-child {
        border-bottom: 0;
    }

    .signal-grid p {
        min-height: auto;
        padding: 22px;
        border-right: 0;
        border-bottom: 1px solid var(--line);
    }

    .signal-grid p:last-child {
        border-bottom: 0;
    }

    .section {
        padding: 76px 0;
    }

    .section-heading h2,
    .founder-copy h2 {
        font-size: 2.35rem;
    }

    .model-steps article,
    .stack-list div {
        grid-template-columns: 1fr;
    }

    .model-steps p {
        grid-column: auto;
    }

    .product-grid {
        grid-template-columns: 1fr;
    }

    .product-card.featured,
    .product-card.wide {
        grid-column: auto;
    }

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

    .footer-bottom {
        flex-direction: column;
    }
}

@media (max-width: 540px) {
    .brand {
        gap: 9px;
    }

    .brand-mark {
        width: 34px;
        height: 34px;
    }

    .hero {
        min-height: 94svh;
    }

    .hero h1 {
        font-size: 3.05rem;
    }

    .hero-actions,
    .product-links {
        flex-direction: column;
    }

    .btn,
    .contact-form .btn {
        width: 100%;
    }

    .capability-card,
    .case-content,
    .product-card,
    .contact-panel,
    .contact-form-container,
    .community-grid a {
        padding: 22px;
    }

    .case-image {
        height: 220px;
    }

    .founder-photo img {
        height: 430px;
    }
}