:root {
  color-scheme: light;
  --paper: #f7f5ef;
  --paper-deep: #efede5;
  --card: #fffdf8;
  --ink: #112b2e;
  --ink-soft: #526064;
  --line: #d7ddd8;
  --teal: #0b796f;
  --teal-dark: #075e58;
  --teal-soft: #dceee9;
  --coral: #e86548;
  --coral-soft: #f8e4dc;
  --gold: #efb84f;
  --navy: #132f35;
  --shadow: 0 24px 70px rgba(17, 43, 46, 0.12);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

button,
a {
  font: inherit;
}

a {
  color: inherit;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  transform: translateY(-160%);
  background: var(--ink);
  color: white;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  z-index: 30;
  top: 0;
  border-bottom: 1px solid rgba(17, 43, 46, 0.11);
  background: rgba(247, 245, 239, 0.9);
  backdrop-filter: blur(14px);
}

.nav-shell {
  display: flex;
  width: min(1200px, calc(100% - 48px));
  min-height: 72px;
  margin: 0 auto;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--ink);
  font-size: 22px;
  font-weight: 760;
  letter-spacing: -0.04em;
  text-decoration: none;
}

.wordmark-mark {
  display: grid;
  width: 31px;
  height: 31px;
  place-items: center;
  border-radius: 9px;
  background: var(--teal);
  color: white;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 21px;
  font-style: italic;
  font-weight: 700;
}

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

nav a {
  color: #354d51;
  font-size: 14px;
  font-weight: 650;
  text-decoration: none;
}

nav a:hover,
nav a:focus-visible,
.text-link:hover,
.text-link:focus-visible {
  color: var(--teal);
}

.button {
  display: inline-flex;
  min-height: 50px;
  padding: 0 22px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--teal);
  border-radius: 11px;
  background: var(--teal);
  color: white;
  font-size: 15px;
  font-weight: 760;
  text-align: center;
  text-decoration: none;
  transition: transform 160ms ease, background 160ms ease, box-shadow 160ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
  background: var(--teal-dark);
  box-shadow: 0 10px 24px rgba(11, 121, 111, 0.18);
}

.button-small {
  min-height: 40px;
  padding: 0 16px;
  border-radius: 9px;
  font-size: 13px;
}

.button-light {
  border-color: white;
  background: white;
  color: var(--teal-dark);
}

.button-light:hover,
.button-light:focus-visible {
  background: #f3fbf8;
}

.hero {
  display: grid;
  width: min(1240px, calc(100% - 48px));
  min-height: 760px;
  margin: 0 auto;
  padding: 96px 0 104px;
  align-items: center;
  grid-template-columns: minmax(390px, 0.84fr) minmax(590px, 1.16fr);
  gap: 72px;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--teal);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2 {
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 600;
  letter-spacing: -0.045em;
}

h1 {
  max-width: 680px;
  margin: 0;
  font-size: clamp(54px, 5.4vw, 78px);
  line-height: 0.98;
}

.lede {
  max-width: 650px;
  margin: 30px 0 0;
  color: #43575b;
  font-size: clamp(18px, 1.6vw, 21px);
  line-height: 1.58;
}

.hero-actions {
  display: flex;
  margin-top: 34px;
  align-items: center;
  gap: 24px;
}

.text-link {
  color: var(--ink);
  font-size: 14px;
  font-weight: 760;
  text-decoration: none;
}

.text-link span {
  display: inline-block;
  margin-left: 5px;
}

.hero-note {
  margin: 9px 0 0;
  color: #718083;
  font-size: 13px;
}

.dashboard-window {
  position: relative;
  overflow: hidden;
  border: 1px solid #cbd4d0;
  border-radius: 18px;
  background: #f9fbfa;
  box-shadow: var(--shadow);
}

.window-topbar {
  display: flex;
  min-height: 58px;
  padding: 0 19px;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid #dfe5e2;
  background: white;
}

.window-title {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 12px;
}

.window-title > span:last-child {
  padding-left: 9px;
  border-left: 1px solid #d9dfdc;
  color: #718083;
}

.window-logo,
.assistant-mark,
.student-brand span {
  display: grid;
  place-items: center;
  border-radius: 6px;
  background: var(--teal);
  color: white;
  font-family: Georgia, "Times New Roman", serif;
  font-style: italic;
  font-weight: 700;
}

.window-logo {
  width: 25px;
  height: 25px;
  font-size: 15px;
}

.window-range {
  padding: 6px 9px;
  border: 1px solid #dbe1de;
  border-radius: 7px;
  color: #58686b;
  font-size: 10px;
  font-weight: 650;
}

.dashboard-body {
  padding: 26px;
}

.dashboard-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
}

.mock-label {
  display: block;
  margin-bottom: 7px;
  color: #748184;
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.dashboard-heading h2 {
  margin: 0;
  font-family: inherit;
  font-size: 19px;
  font-weight: 760;
  letter-spacing: -0.02em;
}

.live-pill {
  display: inline-flex;
  padding: 6px 8px;
  align-items: center;
  gap: 5px;
  border-radius: 999px;
  background: var(--teal-soft);
  color: var(--teal-dark);
  font-size: 9px;
  font-weight: 740;
}

.live-pill i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal);
}

.metric-row {
  display: grid;
  margin-top: 20px;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.metric-card {
  min-width: 0;
  padding: 15px;
  border: 1px solid #e0e6e3;
  border-radius: 10px;
  background: white;
}

.metric-card > span,
.metric-card small {
  display: block;
  color: #6d7b7e;
  font-size: 8px;
}

.metric-card strong {
  display: block;
  margin: 7px 0 4px;
  font-size: 23px;
  letter-spacing: -0.04em;
}

.metric-card.alert {
  border-color: #efc8bb;
  background: #fffaf8;
}

.signal-grid {
  display: grid;
  margin-top: 11px;
  grid-template-columns: 1.35fr 0.65fr;
  gap: 10px;
}

.panel {
  padding: 16px;
  border: 1px solid #e0e6e3;
  border-radius: 10px;
  background: white;
}

.panel-heading {
  display: flex;
  margin-bottom: 15px;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  font-size: 10px;
}

.panel-heading > span {
  color: #7a8688;
  font-size: 7px;
}

.bar-row + .bar-row {
  margin-top: 11px;
}

.bar-row > div:first-child {
  display: flex;
  margin-bottom: 5px;
  justify-content: space-between;
  gap: 12px;
  color: #465b5e;
  font-size: 8px;
}

.bar-row strong {
  color: var(--ink);
}

.bar-track {
  overflow: hidden;
  height: 6px;
  border-radius: 999px;
  background: #edf0ee;
}

.bar-track i {
  display: block;
  width: var(--bar);
  height: 100%;
  border-radius: inherit;
  background: var(--teal);
}

.insight-panel {
  display: flex;
  flex-direction: column;
  border-color: #edc9bc;
  background: var(--coral-soft);
}

.insight-kicker {
  margin-bottom: 10px;
  color: #a33f27;
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.insight-panel > strong {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 16px;
  line-height: 1.25;
}

.insight-panel p {
  margin: 11px 0 18px;
  color: #6f4b42;
  font-size: 8px;
  line-height: 1.55;
}

.source-note {
  margin-top: auto;
  color: #8e675e;
  font-size: 7px;
}

.illustrative-note {
  margin: 0;
  padding: 9px 18px;
  border-top: 1px solid #e0e6e3;
  background: #f5f8f6;
  color: #879194;
  font-size: 8px;
  text-align: right;
}

.faculty-section {
  width: min(1120px, calc(100% - 48px));
  margin: 0 auto;
  padding: 116px 0;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 52px;
}

.section-heading h2,
.workspace-copy h2,
.privacy-card h2,
.pilot-card h2 {
  margin: 0;
  font-size: clamp(40px, 4.5vw, 60px);
  line-height: 1.05;
}

.section-heading > p:last-child,
.workspace-copy > p,
.privacy-copy > p,
.pilot-card > p {
  margin: 22px 0 0;
  color: var(--ink-soft);
  font-size: 18px;
  line-height: 1.65;
}

.faculty-grid article {
  padding: 29px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 253, 248, 0.7);
}

.faculty-grid h3 {
  margin: 33px 0 12px;
  font-size: 20px;
  letter-spacing: -0.025em;
}

.faculty-grid p {
  margin: 0;
  color: #5a696c;
  font-size: 15px;
  line-height: 1.65;
}

.workspace-section {
  display: grid;
  overflow: hidden;
  padding: 116px max(24px, calc((100vw - 1200px) / 2));
  align-items: center;
  grid-template-columns: minmax(330px, 0.72fr) minmax(600px, 1.28fr);
  gap: 76px;
  background: var(--navy);
  color: white;
}

.workspace-copy > p {
  color: #b9c8c8;
}

.workspace-section .eyebrow {
  color: #76cfc0;
}

.check-list {
  display: grid;
  margin: 31px 0 0;
  padding: 0;
  gap: 15px;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 27px;
  color: #dce6e4;
  font-size: 14px;
  line-height: 1.5;
}

.check-list li::before {
  position: absolute;
  top: 1px;
  left: 0;
  color: #6fd0c0;
  content: "✓";
  font-weight: 800;
}

.student-window {
  display: grid;
  min-height: 550px;
  overflow: hidden;
  border: 1px solid #456168;
  border-radius: 18px;
  background: #f8f9f8;
  color: var(--ink);
  grid-template-columns: 160px 1fr;
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.25);
}

.student-window aside {
  display: flex;
  padding: 17px;
  flex-direction: column;
  border-right: 1px solid #e0e5e2;
  background: #eff1ef;
}

.student-brand {
  display: flex;
  margin-bottom: 25px;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 760;
}

.student-brand span {
  width: 24px;
  height: 24px;
}

.student-window aside button {
  padding: 9px 10px;
  border: 1px solid #d3d9d6;
  border-radius: 7px;
  background: white;
  color: var(--ink);
  font-size: 9px;
  font-weight: 700;
  text-align: left;
}

.student-window aside small {
  margin: 25px 0 8px;
  color: #839092;
  font-size: 7px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.student-window aside ul {
  display: grid;
  margin: 0;
  padding: 0;
  gap: 3px;
  list-style: none;
}

.student-window aside li {
  padding: 8px 9px;
  border-radius: 6px;
  color: #69777a;
  font-size: 8px;
}

.student-window aside li.active {
  background: #dfe4e1;
  color: var(--ink);
  font-weight: 700;
}

.privacy-chip {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid #d8ddda;
  color: #768386;
  font-size: 8px;
}

.chat-surface {
  display: flex;
  min-width: 0;
  flex-direction: column;
}

.chat-header {
  display: flex;
  min-height: 62px;
  padding: 0 21px;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid #e1e6e3;
  background: white;
}

.chat-header > div {
  display: grid;
  gap: 3px;
}

.chat-header strong {
  font-size: 11px;
}

.chat-header div span {
  color: var(--teal);
  font-size: 7px;
  font-weight: 700;
}

.model-pill {
  padding: 6px 8px;
  border: 1px solid #dce2df;
  border-radius: 6px;
  color: #627174;
  font-size: 8px;
}

.conversation {
  display: flex;
  width: min(490px, calc(100% - 44px));
  margin: 0 auto;
  padding: 45px 0 18px;
  flex: 1;
  flex-direction: column;
  gap: 25px;
}

.message {
  font-size: 10px;
  line-height: 1.6;
}

.student-message {
  max-width: 310px;
  margin-left: auto;
  padding: 12px 15px;
  border-radius: 12px 12px 3px 12px;
  background: #e5ebe8;
}

.assistant-message {
  display: grid;
  grid-template-columns: 26px 1fr;
  gap: 12px;
}

.assistant-message p {
  margin: 1px 0 12px;
}

.assistant-mark {
  width: 25px;
  height: 25px;
}

.code-block {
  display: grid;
  margin: 12px 0;
  padding: 13px;
  border-radius: 8px;
  background: #172d32;
  color: #dce9e7;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 8px;
  line-height: 1.65;
}

.code-warn {
  margin: 0 -5px;
  padding: 0 5px;
  background: rgba(239, 184, 79, 0.17);
  color: #ffd98e;
}

.composer {
  display: flex;
  width: min(500px, calc(100% - 42px));
  min-height: 48px;
  margin: 0 auto 22px;
  padding: 0 9px 0 15px;
  align-items: center;
  justify-content: space-between;
  border: 1px solid #cfd8d4;
  border-radius: 12px;
  background: white;
  box-shadow: 0 8px 24px rgba(20, 44, 48, 0.08);
  color: #9aa3a4;
  font-size: 8px;
}

.composer b {
  display: grid;
  width: 28px;
  height: 28px;
  place-items: center;
  border-radius: 7px;
  background: var(--teal);
  color: white;
  font-size: 12px;
}

.faculty-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 15px;
}

.feature-icon {
  display: flex;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: var(--teal-soft);
  color: var(--teal-dark);
  font-size: 13px;
  font-weight: 800;
}

.faculty-grid h3 {
  margin-top: 28px;
}

.bars-icon {
  align-items: flex-end;
  gap: 3px;
  padding-bottom: 12px;
}

.bars-icon i {
  width: 4px;
  border-radius: 2px;
  background: var(--teal);
}

.bars-icon i:nth-child(1) { height: 9px; }
.bars-icon i:nth-child(2) { height: 17px; }
.bars-icon i:nth-child(3) { height: 12px; }

.privacy-section {
  padding: 30px 24px 116px;
}

.privacy-card {
  display: grid;
  width: min(1120px, 100%);
  margin: 0 auto;
  padding: 66px;
  border-radius: 20px;
  background: #e8eee9;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 82px;
}

.privacy-copy > p {
  margin-top: 0;
}

.privacy-list {
  display: grid;
  margin: 27px 0 0;
  padding: 0;
  gap: 17px;
  list-style: none;
}

.privacy-list li {
  position: relative;
  padding-left: 25px;
  color: #506164;
  font-size: 14px;
  line-height: 1.55;
}

.privacy-list li::before {
  position: absolute;
  top: 7px;
  left: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--teal);
  content: "";
}

.privacy-list strong {
  color: var(--ink);
}

.pilot-section {
  padding: 0 24px 116px;
}

.pilot-card {
  width: min(1120px, 100%);
  margin: 0 auto;
  padding: 72px;
  border-radius: 20px;
  background: var(--teal);
  color: white;
  text-align: center;
}

.pilot-card .eyebrow {
  color: #bce5dd;
}

.pilot-card > p {
  max-width: 700px;
  margin-right: auto;
  margin-left: auto;
  color: #d7efeb;
}

.pilot-card .button {
  margin-top: 34px;
}

footer {
  display: grid;
  width: min(1120px, calc(100% - 48px));
  margin: 0 auto;
  padding: 42px 0 54px;
  align-items: center;
  border-top: 1px solid var(--line);
  grid-template-columns: 1fr auto 1fr;
  gap: 24px;
  color: #69777a;
  font-size: 12px;
}

footer p {
  margin: 0;
  text-align: center;
}

footer > a:last-child {
  justify-self: end;
}

.footer-brand {
  justify-self: start;
  font-size: 17px;
}

.footer-brand .wordmark-mark {
  width: 25px;
  height: 25px;
  border-radius: 7px;
  font-size: 15px;
}

@media (max-width: 1120px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .hero-copy {
    max-width: 780px;
  }

  .dashboard-window {
    max-width: 780px;
  }

  .workspace-section {
    grid-template-columns: 1fr;
  }

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

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

}

@media (max-width: 820px) {
  .site-header nav {
    display: none;
  }

  .hero {
    min-height: 0;
    padding-top: 72px;
  }

  .privacy-card {
    grid-template-columns: 1fr;
  }

  .privacy-card {
    gap: 38px;
  }

  footer {
    grid-template-columns: 1fr;
    text-align: center;
  }

  footer p,
  footer > a:last-child,
  .footer-brand {
    justify-self: center;
  }
}

@media (max-width: 620px) {
  .nav-shell,
  .hero,
  .faculty-section,
  footer {
    width: min(100% - 32px, 1120px);
  }

  .nav-shell {
    min-height: 64px;
  }

  .site-header .button-small {
    min-height: 36px;
    padding: 0 11px;
    font-size: 11px;
  }

  h1 {
    font-size: clamp(40px, 11vw, 44px);
    line-height: 1.02;
  }

  .hero {
    padding: 56px 0 80px;
    gap: 52px;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .text-link {
    text-align: center;
  }

  .dashboard-body {
    padding: 18px;
  }

  .dashboard-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .metric-row {
    grid-template-columns: 1fr 1fr;
  }

  .metric-card:last-child {
    grid-column: 1 / -1;
  }

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

  .faculty-section {
    padding: 82px 0;
  }

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

  .workspace-section {
    padding: 82px 16px;
    gap: 48px;
  }

  .student-window {
    min-height: 520px;
    grid-template-columns: 1fr;
  }

  .student-window aside {
    display: none;
  }

  .privacy-section,
  .pilot-section {
    padding-right: 16px;
    padding-bottom: 82px;
    padding-left: 16px;
  }

  .privacy-card,
  .pilot-card {
    padding: 44px 25px;
  }

}

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

  .button {
    transition: none;
  }
}