@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Manrope:wght@600;700;800&display=swap');

:root {
  --ink: #12231d;
  --muted: #5e6f68;
  --paper: #fbfcf8;
  --soft: #f0f5ef;
  --line: #dbe4dc;
  --green: #176b50;
  --green-dark: #0d4b37;
  --mint: #dcefe4;
  --lime: #cde96b;
  --brand-red: #e51519;
  --brand-orange: #f9a52b;
  --warm: #f4efe4;
  --shadow: 0 24px 70px rgba(28, 58, 45, .13);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: 'DM Sans', sans-serif; line-height: 1.55; }
button, input { font: inherit; }
a { color: inherit; }
.site-header { max-width: 1180px; margin: auto; height: 84px; display: flex; align-items: center; justify-content: space-between; padding: 0 28px; }
.brand { display: flex; gap: 12px; align-items: center; font-family: Manrope, sans-serif; font-size: 18px; text-decoration: none; }
.brand img { display: block; width: 104px; height: 57px; object-fit: contain; }
.brand strong { color: var(--green); }
.brand-divider { width: 1px; height: 31px; background: var(--line); }
.product-name { white-space: nowrap; }
nav { display: flex; align-items: center; gap: 28px; }
nav a { text-decoration: none; font-size: 14px; font-weight: 600; color: #405149; }
.nav-cta { padding: 10px 17px; border: 1px solid var(--green); border-radius: 99px; color: var(--green); }
.hero { min-height: 660px; padding: 88px max(28px, calc((100vw - 1124px) / 2)); display: grid; grid-template-columns: 1.25fr .75fr; gap: 76px; align-items: center; background: radial-gradient(circle at 92% 8%, rgba(249,165,43,.12), transparent 20%), radial-gradient(circle at 83% 24%, rgba(205,233,107,.22), transparent 23%), linear-gradient(135deg, #f5f8f1 0%, #fbfcf8 58%, #edf5ee 100%); border-block: 1px solid #e8eee8; }
.eyebrow { margin: 0 0 18px; color: var(--green); font-size: 12px; letter-spacing: .16em; font-weight: 800; }
h1, h2, h3 { font-family: Manrope, sans-serif; line-height: 1.08; }
h1 { max-width: 760px; margin: 0; font-size: clamp(44px, 5.3vw, 74px); letter-spacing: -.055em; }
h1 span { color: var(--green); }
.hero-lead { max-width: 660px; margin: 26px 0 0; color: var(--muted); font-size: 19px; }
.hero-actions { display: flex; gap: 12px; margin-top: 34px; }
.button { padding: 14px 21px; border-radius: 10px; text-decoration: none; font-weight: 700; }
.button-primary { color: white; background: var(--green); box-shadow: 0 8px 20px rgba(23,107,80,.2); }
.button-primary:hover { background: var(--green-dark); }
.button-secondary { border: 1px solid #b9c8bd; background: rgba(255,255,255,.5); }
.trust-line { display: flex; flex-wrap: wrap; gap: 19px; margin-top: 35px; color: var(--muted); font-size: 13px; }
.trust-line i { color: var(--green); font-style: normal; font-weight: 800; }
.impact-card { padding: 34px; background: #fff; border: 1px solid var(--line); border-radius: 24px; box-shadow: var(--shadow); transform: rotate(1.5deg); }
.impact-icon { width: 50px; height: 50px; display: grid; place-items: center; border-radius: 14px; background: var(--mint); font-size: 23px; }
.impact-label { margin: 24px 0 7px; color: var(--muted); font-size: 13px; }
blockquote { margin: 0; font-family: Manrope, sans-serif; font-size: 26px; font-weight: 700; line-height: 1.3; }
.impact-result { margin-top: 26px; padding: 18px; border-radius: 13px; background: var(--soft); }
.impact-result strong, .impact-result span { display: block; }
.impact-result strong { color: var(--green); }
.impact-result span { margin-top: 3px; color: var(--muted); font-size: 13px; }
.demo-section, .steps { max-width: 1180px; margin: auto; padding: 110px 28px; }
.section-heading { max-width: 660px; margin-bottom: 48px; }
.section-heading h2, .confidence h2 { margin: 0; font-size: clamp(36px, 4vw, 53px); letter-spacing: -.04em; }
.section-heading > p:last-child { color: var(--muted); }
.assistant-shell { display: grid; grid-template-columns: .72fr 1.28fr; min-height: 620px; overflow: hidden; border: 1px solid var(--line); border-radius: 26px; box-shadow: var(--shadow); }
.assistant-info { padding: 48px 42px; color: white; background: var(--green-dark); }
.school-symbol { width: 58px; height: 58px; display: grid; place-items: center; margin-bottom: 28px; color: var(--ink); background: var(--lime); border-radius: 17px; font-size: 27px; }
.assistant-kicker { margin: 0 0 7px; color: #b9d5ca; font-size: 11px; letter-spacing: .15em; font-weight: 800; }
.assistant-info h3 { margin: 0; font-size: 29px; }
.online { font-size: 13px; color: #cbe1d8; }
.online span { display: inline-block; width: 7px; height: 7px; margin-right: 6px; background: var(--lime); border-radius: 50%; }
.demo-notice { margin: 33px 0; padding: 17px; border: 1px solid rgba(255,255,255,.13); border-radius: 12px; color: #d5e5df; font-size: 13px; }
.assistant-principles { display: grid; gap: 20px; margin-top: 38px; }
.assistant-principles span { display: flex; gap: 12px; align-items: center; color: #e7f0ec; font-size: 14px; }
.assistant-principles b { color: var(--lime); font-size: 11px; letter-spacing: .08em; }
.chat-card { display: flex; min-width: 0; flex-direction: column; background: #f8faf7; }
.chat-header { min-height: 77px; display: flex; align-items: center; justify-content: space-between; padding: 16px 24px; background: white; border-bottom: 1px solid var(--line); }
.chat-header div span { display: block; color: var(--muted); font-size: 12px; }
.secure-badge { padding: 7px 10px; color: var(--green); background: var(--soft); border-radius: 99px; font-size: 11px; font-weight: 700; }
.messages { height: 340px; overflow-y: auto; padding: 26px 24px 10px; }
.message { display: flex; gap: 9px; margin-bottom: 16px; }
.message.user { justify-content: flex-end; }
.avatar { flex: 0 0 28px; width: 28px; height: 28px; display: grid; place-items: center; margin-top: 3px; color: white; background: var(--green); border-radius: 9px 9px 9px 3px; font-size: 12px; font-weight: 800; }
.bubble { max-width: 78%; padding: 13px 15px; background: white; border: 1px solid var(--line); border-radius: 4px 15px 15px; font-size: 14px; box-shadow: 0 4px 15px rgba(18,35,29,.04); white-space: pre-line; }
.user .bubble { color: white; background: var(--green); border-color: var(--green); border-radius: 15px 4px 15px 15px; }
.source-list { display: grid; gap: 5px; margin-top: 13px; padding-top: 11px; border-top: 1px solid var(--line); color: var(--muted); font-size: 11px; }
.source-list strong { color: var(--green); }
.suggestions { display: flex; gap: 7px; overflow-x: auto; padding: 8px 24px 14px; }
.suggestions button { flex: 0 0 auto; padding: 8px 11px; color: var(--green-dark); background: white; border: 1px solid #cbd9cf; border-radius: 99px; cursor: pointer; font-size: 11px; }
.suggestions button:hover { border-color: var(--green); }
.chat-form { display: flex; gap: 8px; margin: auto 24px 0; padding: 10px; background: white; border: 1px solid #bfcfc3; border-radius: 14px; }
.chat-form:focus-within { border-color: var(--green); box-shadow: 0 0 0 3px rgba(23,107,80,.1); }
.chat-form input:first-of-type { min-width: 0; flex: 1; padding: 4px 6px; border: 0; outline: 0; }
.chat-form button { width: 38px; height: 38px; color: white; background: var(--green); border: 0; border-radius: 10px; cursor: pointer; font-weight: 800; }
.privacy-note { margin: 8px 24px 17px; text-align: center; color: #7a8a82; font-size: 10px; }
.honeypot { position: absolute; left: -9999px; }
.step-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.step-grid article { padding: 30px; border: 1px solid var(--line); border-radius: 18px; background: white; }
.step-grid article > span { color: var(--green); font-family: Manrope, sans-serif; font-weight: 800; }
.step-grid h3 { margin: 25px 0 10px; font-size: 21px; }
.step-grid p { margin: 0; color: var(--muted); }
.confidence { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; padding: 100px max(28px, calc((100vw - 1124px) / 2)); color: white; background: var(--green-dark); }
.confidence .eyebrow { color: var(--lime); }
.confidence-list p { display: grid; margin: 0; padding: 22px 0; border-bottom: 1px solid rgba(255,255,255,.16); }
.confidence-list span { margin-top: 5px; color: #bdd2ca; }
footer { min-height: 160px; display: flex; align-items: center; justify-content: space-between; padding: 30px max(28px, calc((100vw - 1124px) / 2)); color: white; background: #10261f; }
.footer-brand { display: flex; align-items: center; gap: 19px; }
.footer-brand img { display: block; width: 122px; height: auto; }
.footer-brand span { padding-left: 19px; border-left: 1px solid rgba(255,255,255,.25); font-family: Manrope, sans-serif; font-weight: 800; }
footer p { color: #b9cbc4; font-size: 13px; }
.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; }

@media (max-width: 850px) {
  nav a:not(.nav-cta) { display: none; }
  .hero { grid-template-columns: 1fr; padding-block: 65px; }
  .impact-card { max-width: 520px; transform: none; }
  .assistant-shell { grid-template-columns: 1fr; }
  .assistant-info { padding: 34px; }
  .assistant-principles { grid-template-columns: repeat(3, 1fr); }
  .assistant-principles span { align-items: flex-start; flex-direction: column; }
  .step-grid, .confidence { grid-template-columns: 1fr; }
  .confidence { gap: 42px; }
}

@media (max-width: 560px) {
  .site-header { height: 70px; padding-inline: 18px; }
  .hero, .demo-section, .steps { padding-inline: 20px; }
  .hero { padding-block: 55px; }
  h1 { font-size: 43px; }
  .hero-actions { align-items: stretch; flex-direction: column; text-align: center; }
  .assistant-info { padding: 28px 24px; }
  .assistant-principles { grid-template-columns: 1fr; }
  .chat-header { align-items: flex-start; gap: 12px; }
  .secure-badge { text-align: right; }
  .messages { height: 390px; padding-inline: 15px; }
  .bubble { max-width: 88%; }
  .suggestions { padding-inline: 15px; }
  .chat-form { margin-inline: 15px; }
  footer { align-items: flex-start; flex-direction: column; justify-content: center; }
}

@media (max-width: 430px) {
  .brand img { width: 90px; height: 50px; }
  .brand-divider, .product-name { display: none; }
}