:root {
  --ink: #0b1220;
  --ink-soft: #3a4a5c;
  --muted: #6b7c8f;
  --paper: #f2f7fb;
  --paper-2: #e8f1f6;
  --line: rgba(11, 18, 32, 0.1);
  --teal: #00a8a0;
  --teal-deep: #008f88;
  --ember: #ff5a36;
  --ember-deep: #e03d2c;
  --glow-cool: rgba(0, 168, 160, 0.22);
  --glow-warm: rgba(255, 90, 54, 0.16);
  --radius: 14px;
  --font-display: "Syne", system-ui, sans-serif;
  --font-body: "Figtree", system-ui, sans-serif;
  --max: 1120px;
  --page-pad: clamp(1.25rem, 4vw, 2rem);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(1200px 700px at 88% -8%, var(--glow-cool), transparent 55%),
    radial-gradient(900px 600px at -8% 18%, var(--glow-warm), transparent 52%),
    linear-gradient(165deg, var(--paper) 0%, var(--paper-2) 52%, #dce8f0 100%);
  background-attachment: fixed;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

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

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

button,
input,
select {
  font: inherit;
}

.container {
  width: min(100% - (var(--page-pad) * 2), var(--max));
  margin-inline: auto;
}

/* ——— Nav ——— */
.nav {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(14px);
  background: rgba(242, 247, 251, 0.78);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.nav.is-scrolled {
  border-bottom-color: var(--line);
  background: rgba(232, 241, 246, 0.92);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
  gap: 1rem;
}

.logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.04em;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.logo__mark {
  width: 1.35rem;
  height: 1.35rem;
}

.nav__links {
  display: none;
  align-items: center;
  gap: 1.75rem;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.nav__links a:hover {
  color: var(--ink);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.nav__toggle {
  display: inline-flex;
  background: none;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.45rem 0.6rem;
  cursor: pointer;
}

.nav__mobile {
  display: none;
  flex-direction: column;
  gap: 0.85rem;
  padding: 0 0 1.15rem;
  border-top: 1px solid var(--line);
}

.nav__mobile.is-open {
  display: flex;
}

@media (min-width: 860px) {
  .nav__links {
    display: flex;
  }

  .nav__toggle {
    display: none;
  }

  .nav__mobile {
    display: none !important;
  }
}

/* ——— Buttons ——— */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.7rem 1.15rem;
  border-radius: 10px;
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: transform 0.2s var(--ease), background 0.2s var(--ease),
    border-color 0.2s var(--ease), color 0.2s var(--ease);
}

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

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

.btn--primary:hover {
  background: var(--ember-deep);
}

.btn--ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
}

.btn--ghost:hover {
  border-color: rgba(11, 18, 32, 0.28);
}

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

.btn--teal:hover {
  background: var(--teal-deep);
}

.btn--lg {
  padding: 0.95rem 1.45rem;
  font-size: 1rem;
}

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

/* ——— Hero ——— */
.hero {
  position: relative;
  padding: clamp(3rem, 8vh, 5.5rem) 0 clamp(3.5rem, 9vh, 6rem);
}

.hero__grid {
  display: grid;
  gap: 2.5rem;
  align-items: center;
}

.hero__content {
  text-align: left;
  max-width: 34rem;
  justify-self: start;
}

.hero__visual {
  width: 100%;
  max-width: 34rem;
  justify-self: center;
}

.hero__visual svg {
  width: 100%;
  height: auto;
  max-width: none;
}

.brand-hero {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(3.2rem, 8vw, 5.4rem);
  letter-spacing: -0.06em;
  line-height: 0.92;
  margin: 0 0 1.1rem;
}

.hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.45rem, 3vw, 2rem);
  letter-spacing: -0.035em;
  line-height: 1.2;
  margin: 0 0 1rem;
  max-width: 20ch;
}

.hero__lead {
  margin: 0 0 1.75rem;
  color: var(--ink-soft);
  font-size: 1.08rem;
  max-width: 38ch;
}

.hero__ctas {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start;
  gap: 0.75rem;
}

@media (min-width: 900px) {
  .hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 3rem;
    min-height: min(68vh, 620px);
  }

  .hero__visual {
    justify-self: end;
    max-width: none;
  }
}

/* ——— Sections ——— */
section {
  padding: 5rem 0;
}

.section-label {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal);
  margin: 0 0 0.75rem;
}

.section-title {
  font-family: var(--font-display);
  font-weight: 750;
  font-size: clamp(1.85rem, 3.5vw, 2.65rem);
  letter-spacing: -0.04em;
  line-height: 1.1;
  margin: 0 0 0.85rem;
  max-width: 18ch;
}

.section-copy {
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 42ch;
}

.section-head {
  margin-bottom: 2.5rem;
}

/* ——— Models strip ——— */
.models {
  padding: 2rem 0 3rem;
  border-block: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.28);
}

.models__label {
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  margin: 0 0 1.25rem;
}

.models__row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.65rem 1.1rem;
}

.model-chip {
  font-family: var(--font-display);
  font-weight: 650;
  font-size: 0.95rem;
  letter-spacing: -0.02em;
  color: var(--ink-soft);
  opacity: 0.85;
}

.model-chip span {
  color: var(--muted);
  font-weight: 500;
  font-family: var(--font-body);
  font-size: 0.8rem;
}

/* ——— Diff ——— */
.diff {
  display: grid;
  gap: 2.5rem;
}

@media (min-width: 860px) {
  .diff {
    grid-template-columns: 1fr 1.05fr;
    align-items: center;
  }
}

.compare {
  display: grid;
  gap: 1rem;
}

.compare__col {
  padding: 1.35rem 1.4rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.35);
}

.compare__col--win {
  border-color: rgba(0, 168, 160, 0.4);
  background: rgba(0, 168, 160, 0.1);
}

.compare__title {
  font-family: var(--font-display);
  font-weight: 700;
  margin: 0 0 0.55rem;
  font-size: 1.05rem;
}

.compare__col p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.compare__col ul {
  margin: 0.75rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.45rem;
}

.compare__col li {
  font-size: 0.92rem;
  color: var(--ink-soft);
  padding-left: 1.15rem;
  position: relative;
}

.compare__col li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--muted);
}

.compare__col--win li::before {
  background: var(--teal);
}

/* ——— Steps ——— */
.steps {
  display: grid;
  gap: 1.5rem;
  counter-reset: step;
}

@media (min-width: 800px) {
  .steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
  }
}

.step {
  counter-increment: step;
}

.step__num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 2.4rem;
  letter-spacing: -0.05em;
  color: var(--teal);
  line-height: 1;
  margin-bottom: 0.75rem;
  opacity: 0.85;
}

.step h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  letter-spacing: -0.02em;
  margin: 0 0 0.45rem;
}

.step p {
  margin: 0;
  color: var(--muted);
  font-size: 0.98rem;
}

/* ——— Use cases ——— */
.uses {
  display: grid;
  gap: 2rem 3rem;
}

@media (min-width: 760px) {
  .uses {
    grid-template-columns: repeat(2, 1fr);
  }
}

.use h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  letter-spacing: -0.025em;
  margin: 0 0 0.4rem;
}

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

/* ——— Pricing ——— */
.pricing-grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 900px) {
  .pricing-grid {
    grid-template-columns: repeat(4, 1fr);
    align-items: stretch;
  }
}

.plan {
  display: flex;
  flex-direction: column;
  padding: 1.5rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.45);
}

.plan--featured {
  border-color: rgba(255, 90, 54, 0.5);
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 18px 40px rgba(11, 18, 32, 0.07);
}

.plan__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  margin: 0 0 0.25rem;
}

.plan__price {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 2rem;
  letter-spacing: -0.04em;
  margin: 0.65rem 0 0.15rem;
}

.plan__price span {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0;
}

.plan__desc {
  margin: 0 0 1.15rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.plan ul {
  list-style: none;
  margin: 0 0 1.4rem;
  padding: 0;
  display: grid;
  gap: 0.5rem;
  flex: 1;
}

.plan li {
  font-size: 0.9rem;
  color: var(--ink-soft);
  padding-left: 1.1rem;
  position: relative;
}

.plan li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--teal);
  font-weight: 700;
  font-size: 0.8rem;
}

/* ——— FAQ ——— */
.faq {
  display: grid;
  gap: 0.65rem;
  max-width: 720px;
}

.faq details {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.95rem 1.15rem;
  background: rgba(255, 255, 255, 0.35);
}

.faq summary {
  cursor: pointer;
  font-weight: 650;
  font-family: var(--font-display);
  letter-spacing: -0.02em;
  list-style: none;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq details[open] summary {
  margin-bottom: 0.55rem;
}

.faq p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

/* ——— Chat (landing) ——— */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.chat-panel {
  max-width: 720px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.55);
  overflow: hidden;
}

.chat-panel__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 1.1rem;
  border-bottom: 1px solid var(--line);
}

.chat-panel__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.chat-panel__dot {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--teal);
}

.chat-panel__web {
  font-size: 0.88rem;
  font-weight: 650;
  color: var(--teal);
}

.chat-panel__messages {
  display: grid;
  gap: 0.85rem;
  padding: 1.25rem 1.1rem;
  min-height: 220px;
  max-height: 340px;
  overflow-y: auto;
}

.bubble {
  max-width: 85%;
  padding: 0.85rem 1rem;
  border-radius: 14px;
  font-size: 0.98rem;
  line-height: 1.45;
}

.bubble--bot {
  justify-self: start;
  background: rgba(0, 168, 160, 0.1);
  color: var(--ink);
}

.bubble--user {
  justify-self: end;
  background: var(--ink);
  color: #f4f7f8;
  white-space: pre-wrap;
}

.bubble--md {
  max-width: min(100%, 720px);
}

.bubble--md > *:first-child {
  margin-top: 0;
}

.bubble--md > *:last-child {
  margin-bottom: 0;
}

.bubble--md p {
  margin: 0 0 0.75rem;
}

.bubble--md h1,
.bubble--md h2,
.bubble--md h3,
.bubble--md h4 {
  font-family: var(--font-display);
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin: 1rem 0 0.5rem;
}

.bubble--md h1 {
  font-size: 1.35rem;
}

.bubble--md h2 {
  font-size: 1.2rem;
}

.bubble--md h3 {
  font-size: 1.08rem;
}

.bubble--md ul,
.bubble--md ol {
  margin: 0 0 0.75rem;
  padding-left: 1.25rem;
}

.bubble--md li {
  margin: 0.25rem 0;
}

.bubble--md a {
  color: var(--teal-deep);
  font-weight: 650;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.bubble--md blockquote {
  margin: 0 0 0.75rem;
  padding: 0.35rem 0 0.35rem 0.85rem;
  border-left: 3px solid var(--teal);
  color: var(--ink-soft);
}

.bubble--md hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 1rem 0;
}

.bubble--md code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.88em;
  background: rgba(11, 18, 32, 0.08);
  padding: 0.12em 0.35em;
  border-radius: 6px;
}

.bubble--md pre {
  margin: 0 0 0.85rem;
  padding: 0.85rem 1rem;
  overflow-x: auto;
  border-radius: 10px;
  background: #0b1220;
  color: #e8f1f6;
}

.bubble--md pre code {
  background: none;
  padding: 0;
  color: inherit;
  font-size: 0.86rem;
  line-height: 1.5;
}

.bubble--md table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 0.85rem;
  font-size: 0.92rem;
}

.bubble--md th,
.bubble--md td {
  border: 1px solid var(--line);
  padding: 0.4rem 0.55rem;
  text-align: left;
}

.bubble--md th {
  background: rgba(0, 168, 160, 0.08);
}

.bubble--md img {
  max-width: 100%;
  border-radius: 10px;
  margin: 0.35rem 0;
}

.stream-cursor {
  display: inline-block;
  width: 0.55rem;
  height: 1.05em;
  margin-left: 2px;
  vertical-align: text-bottom;
  background: var(--ink);
  animation: stream-blink 1s step-end infinite;
}

@keyframes stream-blink {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .stream-cursor {
    animation: none;
  }
}

.chat-suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.chat-suggestions button {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.7);
  color: var(--ink-soft);
  border-radius: 10px;
  padding: 0.45rem 0.85rem;
  font-size: 0.85rem;
  cursor: pointer;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.chat-suggestions button:hover {
  border-color: rgba(0, 168, 160, 0.45);
  color: var(--ink);
}

.chat-panel__form {
  display: flex;
  gap: 0.55rem;
  padding: 0.85rem 1.1rem;
  border-top: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.4);
}

.chat-panel__form input {
  flex: 1;
  min-width: 0;
  padding: 0.8rem 0.95rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  color: var(--ink);
}

.chat-panel__form input:focus {
  outline: 2px solid rgba(0, 168, 160, 0.35);
  border-color: var(--teal);
}

.chat-panel__hint {
  margin: 0;
  padding: 0 1.1rem 0.95rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.chat-panel__hint a {
  color: var(--teal);
  font-weight: 650;
}

/* ——— Download ——— */
.download-row {
  display: grid;
  gap: 0.75rem;
}

@media (min-width: 760px) {
  .download-row {
    grid-template-columns: repeat(3, 1fr);
  }
}

.download-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 1.25rem 1.3rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.45);
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.download-item:hover {
  border-color: rgba(0, 168, 160, 0.45);
  transform: translateY(-1px);
}

.download-item.is-suggested {
  border-color: rgba(255, 90, 54, 0.45);
  background: rgba(255, 90, 54, 0.06);
}

.download-item strong {
  font-family: var(--font-display);
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

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

.download-note {
  margin: 1.25rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.download-note a {
  color: var(--teal);
  font-weight: 650;
}

/* ——— App (versão web) ——— */
body.app-body {
  background: var(--paper);
  background-attachment: scroll;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.app-shell {
  flex: 1;
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-height: 100vh;
}

.app-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem var(--page-pad);
  border-bottom: 1px solid var(--line);
  background: rgba(242, 247, 251, 0.92);
  backdrop-filter: blur(12px);
}

.app-top__links {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  flex-wrap: wrap;
}

.app-banner {
  margin: 0;
  padding: 0.55rem var(--page-pad);
  background: rgba(0, 168, 160, 0.1);
  color: var(--ink-soft);
  font-size: 0.88rem;
  border-bottom: 1px solid rgba(0, 168, 160, 0.2);
}

.app-banner a {
  color: var(--teal);
  font-weight: 650;
}

.app-main {
  display: grid;
  grid-template-rows: 1fr auto;
  width: min(100%, 820px);
  margin: 0 auto;
  padding: 0 var(--page-pad);
  min-height: 0;
}

.app-messages {
  display: grid;
  gap: 1rem;
  align-content: start;
  padding: 1.5rem 0;
  overflow-y: auto;
}

.app-empty {
  margin: 12vh auto 0;
  text-align: center;
  max-width: 28rem;
}

.app-empty h1 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  letter-spacing: -0.04em;
  margin: 0 0 0.65rem;
}

.app-empty p {
  margin: 0 0 1.25rem;
  color: var(--muted);
}

.app-composer {
  position: sticky;
  bottom: 0;
  padding: 0.85rem 0 1.35rem;
  background: linear-gradient(to top, var(--paper) 70%, transparent);
}

.app-composer__form {
  display: flex;
  gap: 0.55rem;
  padding: 0.55rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
}

.app-composer__form input {
  flex: 1;
  min-width: 0;
  border: 0;
  padding: 0.7rem 0.75rem;
  background: transparent;
  color: var(--ink);
}

.app-composer__form input:focus {
  outline: none;
}

.app-composer__meta {
  margin: 0.55rem 0 0;
  font-size: 0.8rem;
  color: var(--muted);
  text-align: center;
}

.bubble--meta {
  font-size: 0.8rem;
  color: var(--muted);
  padding: 0;
  background: none;
  justify-self: start;
}

/* ——— Thinking / orquestração (insp. Atlas) ——— */
.thinking {
  justify-self: start;
  max-width: min(100%, 420px);
  padding: 0.95rem 1.05rem;
  border-radius: 14px;
  border: 1px solid rgba(0, 168, 160, 0.22);
  background:
    linear-gradient(135deg, rgba(0, 168, 160, 0.1), rgba(255, 90, 54, 0.06));
  display: grid;
  gap: 0.75rem;
}

.thinking__head {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.thinking__orbit {
  width: 1.75rem;
  height: 1.75rem;
  flex-shrink: 0;
  animation: kosmo-spin 2.8s linear infinite;
}

.thinking__orbit circle:first-child {
  fill: var(--teal);
}

.thinking__status {
  display: grid;
  gap: 0.15rem;
  min-width: 0;
}

.thinking__label {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: -0.02em;
  background: linear-gradient(
    90deg,
    var(--ink-soft) 0%,
    var(--ink) 40%,
    var(--teal) 50%,
    var(--ink) 60%,
    var(--ink-soft) 100%
  );
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: kosmo-shimmer 2.4s linear infinite;
}

.thinking__sub {
  font-size: 0.8rem;
  color: var(--muted);
}

.thinking__dots {
  display: inline-flex;
  gap: 0.28rem;
  margin-left: auto;
  align-self: center;
}

.thinking__dots span {
  width: 0.35rem;
  height: 0.35rem;
  border-radius: 50%;
  background: var(--teal);
  animation: kosmo-bounce 1.1s ease-in-out infinite;
}

.thinking__dots span:nth-child(2) {
  animation-delay: 0.15s;
  background: var(--ink);
}

.thinking__dots span:nth-child(3) {
  animation-delay: 0.3s;
  background: var(--ember);
}

.thinking__agents {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.thinking__agent {
  font-size: 0.72rem;
  font-weight: 650;
  letter-spacing: -0.01em;
  padding: 0.28rem 0.55rem;
  border-radius: 8px;
  border: 1px solid var(--line);
  color: var(--muted);
  background: rgba(255, 255, 255, 0.45);
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease),
    background 0.25s var(--ease), transform 0.25s var(--ease);
}

.thinking__agent.is-idle {
  opacity: 0.55;
}

.thinking__agent.is-thinking {
  color: #9a6b00;
  border-color: rgba(245, 158, 11, 0.45);
  background: rgba(245, 158, 11, 0.12);
  transform: translateY(-1px);
}

.thinking__agent.is-working {
  color: #0369a1;
  border-color: rgba(14, 165, 233, 0.45);
  background: rgba(14, 165, 233, 0.12);
  transform: translateY(-1px);
}

.thinking__agent.is-done {
  color: var(--teal-deep);
  border-color: rgba(0, 168, 160, 0.4);
  background: rgba(0, 168, 160, 0.12);
}

.thinking__bar {
  height: 3px;
  border-radius: 99px;
  background: rgba(11, 18, 32, 0.08);
  overflow: hidden;
}

.thinking__bar > i {
  display: block;
  height: 100%;
  width: 35%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--teal), var(--ember));
  animation: kosmo-bar 1.6s var(--ease) infinite;
}

@keyframes kosmo-spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes kosmo-bounce {
  0%,
  80%,
  100% {
    transform: translateY(0);
    opacity: 0.45;
  }
  40% {
    transform: translateY(-4px);
    opacity: 1;
  }
}

@keyframes kosmo-shimmer {
  0% {
    background-position: 100% 0;
  }
  100% {
    background-position: -100% 0;
  }
}

@keyframes kosmo-bar {
  0% {
    transform: translateX(-120%);
  }
  100% {
    transform: translateX(320%);
  }
}

@media (prefers-reduced-motion: reduce) {
  .thinking__orbit,
  .thinking__label,
  .thinking__dots span,
  .thinking__bar > i {
    animation: none;
  }

  .thinking__label {
    color: var(--ink);
    background: none;
    -webkit-background-clip: unset;
    background-clip: unset;
  }
}

/* ——— CTA band ——— */
.cta-band {
  margin: 1rem 0 3rem;
  padding: 3.5rem 1.75rem;
  border-radius: 22px;
  background:
    radial-gradient(600px 280px at 90% 0%, rgba(0, 168, 160, 0.28), transparent 60%),
    linear-gradient(135deg, #0b1220 0%, #0f3d3a 55%, #12324a 100%);
  color: #f4f7f8;
  text-align: center;
}

.cta-band h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  letter-spacing: -0.04em;
  margin: 0 0 0.65rem;
}

.cta-band p {
  margin: 0 auto 1.5rem;
  max-width: 36ch;
  color: rgba(244, 247, 248, 0.72);
}

.cta-band .hero__ctas {
  justify-content: center;
}

/* ——— Auth pages ——— */
.auth {
  min-height: calc(100vh - 72px);
  display: grid;
  place-items: center;
  padding: 3rem 0;
}

.auth__card {
  width: min(100%, 420px);
  padding: 2rem;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.65);
}

.auth__card h1 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  letter-spacing: -0.04em;
  margin: 0 0 0.4rem;
}

.auth__card > p {
  margin: 0 0 1.5rem;
  color: var(--muted);
}

.form {
  display: grid;
  gap: 0.95rem;
}

.field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.field input,
.field select {
  width: 100%;
  padding: 0.75rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  color: var(--ink);
}

.field input:focus,
.field select:focus {
  outline: 2px solid rgba(0, 168, 160, 0.4);
  border-color: var(--teal);
}

.form__hint {
  margin: 0.85rem 0 0;
  text-align: center;
  font-size: 0.9rem;
  color: var(--muted);
}

.form__hint a {
  color: var(--teal);
  font-weight: 650;
}

/* ——— Footer ——— */
.footer {
  border-top: 1px solid var(--line);
  padding: 2.5rem 0 3rem;
}

.footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: space-between;
  align-items: start;
}

.footer__col {
  display: grid;
  gap: 0.45rem;
}

.footer__col strong {
  font-family: var(--font-display);
  margin-bottom: 0.25rem;
}

.footer a {
  color: var(--muted);
  font-size: 0.92rem;
}

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

.footer__copy {
  margin-top: 2rem;
  color: var(--muted);
  font-size: 0.85rem;
}

/* ——— Motion ——— */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.is-in {
  opacity: 1;
  transform: none;
}

.orbit-node {
  transform-origin: center;
  animation: pulse-soft 4.5s var(--ease) infinite;
}

.orbit-node:nth-child(2) {
  animation-delay: 0.6s;
}

.orbit-node:nth-child(3) {
  animation-delay: 1.2s;
}

.orbit-node:nth-child(4) {
  animation-delay: 1.8s;
}

.orbit-path {
  stroke-dasharray: 6 10;
  animation: dash 18s linear infinite;
}

@keyframes pulse-soft {
  0%,
  100% {
    opacity: 0.55;
  }
  50% {
    opacity: 1;
  }
}

@keyframes dash {
  to {
    stroke-dashoffset: -200;
  }
}

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

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .orbit-node,
  .orbit-path {
    animation: none;
  }

  .btn:hover {
    transform: none;
  }
}

.form-error {
  margin: 0;
  color: #b42318;
  font-size: 0.9rem;
}

.btn--sm {
  padding: 0.45rem 0.75rem;
  font-size: 0.85rem;
}

.pricing-grid--3 {
  grid-template-columns: 1fr;
}

@media (min-width: 900px) {
  .pricing-grid--3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.feature-split {
  display: grid;
  gap: 1.75rem;
  align-items: start;
  margin-bottom: 2.5rem;
}

@media (min-width: 900px) {
  .feature-split {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 2.5rem;
    align-items: center;
  }
}

.feature-split__copy h3 {
  font-family: var(--font-display);
  letter-spacing: -0.03em;
  margin: 0 0 0.55rem;
  font-size: 1.35rem;
}

.feature-split__copy > p {
  margin: 0 0 1rem;
  color: var(--muted);
}

.check-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.45rem;
}

.check-list li {
  position: relative;
  padding-left: 1.15rem;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--teal);
  font-weight: 700;
  font-size: 0.8rem;
}

.code-panel {
  margin: 0;
  padding: 1.15rem 1.25rem;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: #0b1220;
  color: #d7e6ee;
  overflow-x: auto;
  font-size: 0.82rem;
  line-height: 1.45;
}

.code-panel code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  white-space: pre;
}

.cap-grid {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 800px) {
  .cap-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.cap h3 {
  font-family: var(--font-display);
  letter-spacing: -0.02em;
  margin: 0 0 0.4rem;
  font-size: 1.15rem;
}

.cap p {
  margin: 0;
  color: var(--muted);
  font-size: 0.98rem;
}

.mcp-band {
  display: grid;
  gap: 1.5rem;
  padding: 1.75rem;
  border-radius: 18px;
  border: 1px solid rgba(0, 168, 160, 0.28);
  background:
    radial-gradient(500px 220px at 0% 0%, rgba(0, 168, 160, 0.14), transparent 60%),
    rgba(255, 255, 255, 0.5);
}

@media (min-width: 800px) {
  .mcp-band {
    grid-template-columns: 0.7fr 1.3fr;
    align-items: center;
  }
}

.mcp-stat {
  display: grid;
  gap: 0.25rem;
}

.mcp-stat strong {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 3.4rem);
  letter-spacing: -0.05em;
  color: var(--teal-deep);
  line-height: 1;
}

.mcp-stat span {
  color: var(--muted);
  font-size: 0.95rem;
}

.mcp-points p {
  margin: 0 0 0.85rem;
  color: var(--ink-soft);
}

.a11y-note {
  margin-top: 2rem;
  padding: 1.25rem 1.4rem;
  border-radius: 14px;
  border: 1px solid rgba(0, 168, 160, 0.25);
  background: rgba(0, 168, 160, 0.08);
}

.a11y-note p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 1rem;
  max-width: 62ch;
}

.mcp-points .btn {
  margin-top: 1rem;
}

.section-copy code,
.feature-split__copy code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.88em;
  background: rgba(11, 18, 32, 0.08);
  padding: 0.1em 0.35em;
  border-radius: 5px;
}

/* ——— Platform (Claude-like) ——— */
.platform-body {
  margin: 0;
  height: 100vh;
  overflow: hidden;
  background: var(--paper);
  background-attachment: scroll;
}

.platform {
  display: grid;
  grid-template-columns: 280px 1fr;
  height: 100vh;
  overflow: hidden;
}

.platform-side {
  position: sticky;
  top: 0;
  align-self: start;
  height: 100vh;
  max-height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  padding: 1rem 0.9rem;
  border-right: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(10px);
  overflow: hidden;
  z-index: 5;
}

.platform-side__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  flex-shrink: 0;
}

.platform-side__usage {
  padding: 0.85rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.7);
  flex-shrink: 0;
}

.usage-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.85rem;
  margin-bottom: 0.65rem;
}

.usage-meter {
  margin-bottom: 0.75rem;
}

.usage-meter__row {
  display: flex;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--muted);
  margin-bottom: 0.3rem;
}

.usage-meter__bar {
  height: 6px;
  border-radius: 99px;
  background: rgba(11, 18, 32, 0.08);
  overflow: hidden;
}

.usage-meter__bar > i {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--teal), var(--ember));
  transition: width 0.35s var(--ease);
}

.usage-meter.is-warn .usage-meter__bar > i {
  background: var(--ember);
}

.usage-meter.is-limit .usage-meter__bar > i {
  background: #b42318;
}

.usage-plan {
  margin: 0;
  font-size: 0.8rem;
  color: var(--ink-soft);
  font-weight: 650;
}

.platform-side__sessions {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.55);
  padding: 0.55rem;
}

.sessions-head {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  padding: 0.15rem 0.35rem;
  flex-shrink: 0;
}

.sessions-list {
  overflow-y: auto;
  display: grid;
  gap: 0.3rem;
  align-content: start;
  flex: 1;
  min-height: 0;
}

.sessions-empty {
  margin: 0.4rem;
  font-size: 0.82rem;
  color: var(--muted);
}

.session-item {
  text-align: left;
  border: 1px solid transparent;
  background: transparent;
  border-radius: 8px;
  padding: 0.5rem 0.55rem;
  cursor: pointer;
  color: inherit;
  display: grid;
  gap: 0.1rem;
}

.session-item:hover,
.session-item.is-active {
  background: rgba(0, 168, 160, 0.1);
  border-color: rgba(0, 168, 160, 0.2);
}

.session-item__title {
  font-size: 0.86rem;
  font-weight: 650;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.session-item__meta {
  font-size: 0.72rem;
  color: var(--muted);
}

.platform-side__nav {
  display: grid;
  gap: 0.35rem;
  flex-shrink: 0;
}

.side-link {
  text-align: left;
  border: 0;
  background: transparent;
  padding: 0.55rem 0.65rem;
  border-radius: 8px;
  cursor: pointer;
  color: var(--ink-soft);
  font-weight: 600;
}

.side-link:hover,
.side-link.is-active {
  background: rgba(0, 168, 160, 0.1);
  color: var(--ink);
}

.platform-side__foot {
  margin-top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  flex-shrink: 0;
  padding-top: 0.35rem;
  border-top: 1px solid var(--line);
}

.side-user {
  font-size: 0.85rem;
  color: var(--muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.platform-main {
  display: grid;
  grid-template-rows: 1fr;
  min-width: 0;
  height: 100vh;
  overflow: hidden;
}

.platform-view {
  display: none;
  grid-template-rows: 1fr auto;
  height: 100vh;
  min-height: 0;
  overflow: hidden;
}

.platform-view.is-active {
  display: grid;
}

.platform-view#view-plans.is-active {
  display: block;
  overflow: auto;
}

.platform .app-messages {
  padding: 1.5rem 1.5rem 1rem;
  max-width: 820px;
  width: 100%;
  margin: 0 auto;
  overflow-y: auto;
  min-height: 0;
}

.platform-composer {
  max-width: 820px;
  width: 100%;
  margin: 0 auto;
  padding: 0.55rem 1.5rem 1.1rem;
  border-top: 1px solid transparent;
  background: linear-gradient(180deg, transparent, rgba(242, 247, 251, 0.9) 30%);
}

.composer-previews {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 0.45rem;
}

.composer-preview {
  position: relative;
  width: 72px;
  height: 72px;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: #fff;
}

.composer-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.composer-preview button {
  position: absolute;
  top: 2px;
  right: 2px;
  width: 22px;
  height: 22px;
  border: 0;
  border-radius: 99px;
  background: rgba(11, 18, 32, 0.75);
  color: #fff;
  cursor: pointer;
  line-height: 1;
}

.platform-composer .app-composer__form {
  align-items: flex-end;
}

.composer-tools {
  display: flex;
  gap: 0.25rem;
  flex-shrink: 0;
  align-items: center;
}

.composer-tools .btn.is-recording {
  background: rgba(255, 90, 54, 0.18);
  border-color: rgba(255, 90, 54, 0.55);
  color: var(--ember);
  animation: pulse-rec 1s ease infinite;
}

@keyframes pulse-rec {
  50% {
    transform: scale(1.06);
  }
}

.composer-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.5rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fff;
  font-size: 0.8rem;
  color: var(--ink-soft);
}

.composer-chip button {
  border: 0;
  background: transparent;
  cursor: pointer;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1;
}

.bubble-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  justify-content: flex-end;
}

.bubble-chip {
  font-size: 0.75rem;
  font-weight: 650;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  background: rgba(11, 18, 32, 0.06);
  color: var(--ink-soft);
}

.bubble--audio {
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0.75rem 0.9rem;
  margin: 0.45rem 0 0.85rem;
  max-width: min(100%, 520px);
  display: grid;
  gap: 0.45rem;
}

.bubble-audio__label {
  font-size: 0.82rem;
  color: var(--ink-soft);
  line-height: 1.35;
}

.bubble--audio audio {
  width: 100%;
}

.platform-composer textarea {
  flex: 1;
  min-width: 0;
  border: 0;
  resize: none;
  padding: 0.7rem 0.75rem;
  background: transparent;
  color: var(--ink);
  font: inherit;
  line-height: 1.4;
  max-height: 160px;
}

.platform-composer textarea:focus {
  outline: none;
}

.bubble-stack {
  display: grid;
  gap: 0.4rem;
  margin: 0.55rem 0;
}

.bubble-stack--user {
  justify-items: end;
}

.bubble-images {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  justify-content: flex-end;
  max-width: min(100%, 420px);
}

.bubble-images img {
  width: 140px;
  height: 140px;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #fff;
}

.plans-view {
  padding: 2rem 1.5rem 3rem;
  max-width: 1100px;
  margin: 0 auto;
}

.plans-view h1 {
  font-family: var(--font-display);
  letter-spacing: -0.04em;
  margin: 0 0 0.5rem;
}

.plans-view__lead {
  color: var(--muted);
  margin: 0 0 1.5rem;
}

@media (max-width: 860px) {
  .platform-body {
    height: auto;
    overflow: auto;
  }

  .platform {
    grid-template-columns: 1fr;
    height: auto;
    overflow: visible;
  }

  .platform-side {
    position: relative;
    height: auto;
    max-height: none;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .platform-side__sessions {
    max-height: 180px;
  }

  .platform-main,
  .platform-view {
    height: auto;
    min-height: 70vh;
  }
}

/* fix typo safeguard - ember on dark cta */
.cta-band .btn--primary {
  background: var(--ember);
}

.cta-band .btn--ghost {
  border-color: rgba(255, 255, 255, 0.28);
  color: #fff;
}

.cta-band .btn--ghost:hover {
  border-color: rgba(255, 255, 255, 0.5);
}