:root {
  --accent: #3458ce;
  --on-accent: #ffffff;
  --soft: #eaf0fd;
  --message-line: #c7d4f4;
}
:root[data-theme="dark"] {
  --accent: #a3baff;
  --on-accent: #142033;
  --soft: #233652;
  --message-line: #405a80;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) { --accent: #a3baff; --on-accent: #142033; --soft: #233652; --message-line: #405a80; }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-padding-top: 28px; }
body { margin: 0; background: var(--idy-bg); color: var(--idy-ink); font-size: 16px; line-height: 1.75; }
a { color: var(--accent); text-underline-offset: 4px; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible, summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 5px; }
p { margin: 0 0 16px; }
h1, h2, h3 { margin: 0; }
h2 { font-size: clamp(26px, 3vw, 36px); line-height: 1.25; }
h3 { font-size: 19px; line-height: 1.45; }
.wrap { width: min(100% - 56px, 1120px); margin-inline: auto; }
.skip-link { position: absolute; z-index: 10; top: -100px; left: 20px; padding: 8px 14px; background: var(--idy-surface); }
.skip-link:focus { top: 12px; }
.hero { display: grid; grid-template-columns: 1.1fr 1fr; align-items: center; gap: 70px; padding-block: 76px 86px; }
.hero-copy { min-width: 0; }
.product-name { display: flex; align-items: center; gap: 13px; margin-bottom: 25px; font-size: 18px; font-weight: 700; }
.app-icon { display: grid; place-items: center; width: 54px; height: 54px; border-radius: 15px; background: #243c6b; }
.app-icon img { display: block; }
h1 { font-size: clamp(38px, 4.2vw, 60px); line-height: 1.09; letter-spacing: -.045em; }
.hero-description { max-width: 49ch; margin-top: 25px; color: var(--idy-muted); font-size: 17px; line-height: 1.8; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 17px 23px; margin-top: 28px; }
.button { display: inline-flex; justify-content: center; align-items: center; min-height: 46px; padding: 11px 20px; border: 1px solid transparent; border-radius: 8px; font-size: 14px; font-weight: 700; text-decoration: none; line-height: 1.5; }
.button:hover { text-decoration: none; filter: brightness(.95); }
.primary { color: var(--on-accent); background: var(--accent); }
.text-link { font-size: 14px; font-weight: 600; }
.platform-note { margin: 19px 0 0; color: var(--idy-muted); font-size: 12px; }
.conversation { margin: 0; min-width: 0; border: 1px solid var(--idy-line); border-radius: 17px; background: var(--idy-surface); overflow: hidden; }
.conversation-heading { display: flex; align-items: center; gap: 12px; padding: 22px 24px; border-bottom: 1px solid var(--idy-line); }
.chat-icon { flex: 0 0 38px; height: 38px; display: grid; place-items: center; background: #243c6b; border-radius: 11px; }
.conversation-heading h2 { font-size: 16px; letter-spacing: 0; }
.conversation-heading p { margin: 2px 0 0; font-size: 11px; color: var(--idy-muted); }
.client-name { margin-left: auto; color: var(--idy-muted); font-size: 10px; white-space: nowrap; }
.conversation-body { display: flex; flex-direction: column; gap: 22px; padding: 30px 25px; }
.message { max-width: 88%; padding: 14px 18px 17px; border-radius: 11px; }
.message .sender { display: block; margin-bottom: 6px; font-size: 11px; font-weight: 700; }
.message p { margin: 0; font-size: 15px; line-height: 1.7; }
.agent-message { align-self: flex-start; background: var(--soft); border-bottom-left-radius: 2px; }
.agent-message .sender { color: var(--accent); }
.reply-message { align-self: flex-end; background: #3458ce; color: #ffffff; border-bottom-right-radius: 2px; }
.reply-message .sender { color: #e3ebff; }
.receipt { display: flex; align-items: flex-start; gap: 10px; margin-left: 10px; padding-left: 14px; border-left: 2px solid var(--message-line); }
.receipt > span { color: var(--accent); font-size: 20px; line-height: 1; }
.receipt p { margin: 0; color: var(--idy-muted); font-size: 12px; line-height: 1.7; }
.conversation figcaption { padding: 16px 24px; border-top: 1px solid var(--idy-line); color: var(--idy-muted); font-size: 11px; line-height: 1.7; }
.features-section, .setup-section, .questions-section { padding-block: 60px; border-top: 1px solid var(--idy-line); }
.section-heading { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; margin-bottom: 42px; }
.section-heading h2 { max-width: 22ch; }
.section-heading > p { max-width: 48ch; margin: 0; color: var(--idy-muted); align-self: end; }
.features-list { display: grid; grid-template-columns: 1fr 1fr; gap: 38px 80px; margin: 0; }
.features-list dt { margin-bottom: 10px; font-size: 19px; font-weight: 700; line-height: 1.45; }
.features-list dd { max-width: 49ch; margin: 0; color: var(--idy-muted); font-size: 15px; }
.setup-steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 40px; margin: 0 0 28px; padding: 0; list-style: none; counter-reset: setup; }
.setup-steps li { counter-increment: setup; }
.setup-steps li::before { content: counter(setup); display: inline-flex; justify-content: center; align-items: center; width: 32px; height: 32px; border: 1px solid var(--idy-line); border-radius: 50%; margin-bottom: 17px; color: var(--accent); font-size: 14px; font-weight: 700; }
.setup-steps p { margin-top: 12px; color: var(--idy-muted); font-size: 14px; }
.download-section { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; margin-block: 20px 60px; padding: 36px 40px; border: 1px solid var(--idy-line); border-radius: 14px; background: var(--idy-surface); }
.download-copy > p { margin-top: 18px; max-width: 45ch; color: var(--idy-muted); font-size: 15px; }
.download-copy > .signing-note { padding-top: 16px; border-top: 1px solid var(--idy-line); font-size: 12px; }
.release-panel { display: flex; flex-direction: column; align-items: flex-start; justify-content: center; min-width: 0; }
.release-stage { margin: 0; font-size: 12px; color: var(--idy-muted); }
.release-version { margin: 4px 0 8px; font-size: 28px; font-weight: 750; letter-spacing: -.03em; overflow-wrap: anywhere; }
.release-file { margin: 0 0 18px; color: var(--idy-muted); font-size: 11px; overflow-wrap: anywhere; }
.release-panel .text-link { margin-top: 16px; }
.release-status { margin: 14px 0 0; color: var(--idy-muted); font-size: 12px; }
.questions-section { display: grid; grid-template-columns: .8fr 1.2fr; gap: 80px; }
.questions details { border-bottom: 1px solid var(--idy-line); }
.questions summary { padding: 17px 0; cursor: pointer; font-size: 16px; font-weight: 650; }
.questions details:first-child summary { padding-top: 0; }
.questions details p { margin: 0 0 22px; color: var(--idy-muted); font-size: 14px; }
@media (max-width: 1000px) {
  .hero { gap: 38px; }
  .section-heading, .features-list, .download-section, .questions-section { gap: 35px; }
  .conversation-heading { padding: 18px; flex-wrap: wrap; }
  .client-name { margin-left: 50px; }
}
@media (max-width: 760px) {
  .hero { grid-template-columns: 1fr; gap: 36px; padding-block: 42px 48px; }
  h1 { font-size: clamp(38px, 7.7vw, 56px); }
  .hero-description { max-width: 55ch; }
  .conversation { max-width: 520px; width: 100%; }
  .client-name { margin-left: auto; }
  .section-heading, .features-list, .questions-section, .download-section, .setup-steps { grid-template-columns: 1fr; }
  .section-heading { gap: 20px; margin-bottom: 30px; }
  .features-section, .setup-section, .questions-section { padding-block: 40px; }
  .features-list, .setup-steps { gap: 28px; }
  .setup-steps p { max-width: 55ch; }
  .download-section { gap: 22px; margin-block: 10px 40px; padding: 28px; }
  .questions-section { gap: 28px; }
}
@media (max-width: 600px) {
  .wrap { width: calc(100% - 40px); }
  .hero-description { font-size: 16px; }
  .hero-actions { gap: 16px; }
  .conversation-body { padding: 24px 18px; }
  .message { max-width: 94%; }
  .conversation-heading { gap: 10px; }
  .client-name { width: 100%; margin-left: 48px; }
  .download-section { padding: 24px 20px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }