/* BitTalking AppTokens: neutral surfaces, iris selection, 8px groups, system typography. */
:root {
  color-scheme: light;
  --canvas: #f6f7f8;
  --surface: #fff;
  --inset: #eceef1;
  --text: #17181c;
  --muted: #666b76;
  --border: #e1e3e7;
  --accent: #4c6fff;
  --accent-strong: #2f4ae0;
  --accent-soft: #e6eaff;
  --coral: #ff5d6c;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 100px; }
body { margin: 0; background: var(--canvas); color: var(--text); font-family: var(--font); -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
img { display: block; max-width: 100%; }
.icon { width: 24px; height: 24px; fill: currentColor; flex-shrink: 0; vertical-align: middle; }
.icon-definitions { position: absolute; width: 0; height: 0; overflow: hidden; }
h1, h2, h3, h4, p, figure { margin: 0; }
.container { width: min(1200px, calc(100% - 96px)); margin-inline: auto; }
a:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; border-radius: 4px; }
.skip-link { position: fixed; top: -80px; left: 20px; z-index: 20; padding: 12px; background: var(--surface); }
.skip-link:focus { top: 10px; }
.navbar { position: sticky; top: 0; z-index: 10; height: 80px; background: var(--canvas); border-bottom: 1px solid var(--border); }
.nav-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 650; font-size: 21px; white-space: nowrap; }
.brand img { border-radius: 8px; }
nav { display: flex; align-items: center; gap: 30px; font-size: 14px; }
nav a { display: inline-flex; min-height: 44px; align-items: center; gap: 8px; }
nav a:hover, .text-link:hover, .secondary-download:hover { color: var(--accent-strong); }
nav .nav-download { color: var(--accent-strong); background: var(--accent-soft); padding: 0 17px; border-radius: 8px; }
nav .icon { width: 17px; height: 17px; }
.hero { padding-block: 92px 70px; display: grid; grid-template-columns: .9fr 1.2fr; align-items: center; gap: 46px; }
.release-badge { display: inline-flex; gap: 9px; align-items: center; font-size: 12px; color: var(--accent-strong); margin-bottom: 26px; }
.release-badge .icon { width: 16px; height: 16px; margin-left: 4px; }
.badge-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }
h1 { font-size: clamp(42px, 4.35vw, 62px); font-weight: 650; line-height: 1.28; }
h1 span { color: var(--accent); }
.hero-description { margin-top: 24px; font-size: 16px; color: var(--muted); line-height: 1.9; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 22px; margin-top: 32px; }
.button { min-height: 48px; padding: 13px 20px; display: inline-flex; justify-content: center; align-items: center; gap: 14px; border-radius: 8px; font-size: 14px; font-weight: 550; transition: background .15s; }
.button .icon { width: 18px; height: 18px; }
.primary { background: var(--accent); color: #fff; }
.primary:hover { background: var(--accent-strong); }
.secondary { background: var(--accent-soft); color: var(--accent-strong); }
.secondary:hover { background: #dce2ff; }
.text-link { display: inline-flex; gap: 8px; align-items: center; min-height: 44px; font-size: 13px; }
.text-link .icon { width: 17px; height: 17px; }
.hero-platforms { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; margin-top: 24px; font-size: 11px; color: var(--muted); }
.hero-platforms .icon { width: 14px; height: 14px; }
.hero-platforms span { margin-inline: 2px; color: #a3a7b0; }
/* A code-rendered illustration of the current three-tab messaging workspace. */
.workspace-figure { min-width: 0; }
.workspace { border: 1px solid #c7cad1; border-radius: 8px; background: var(--surface); overflow: hidden; font-size: 11px; }
.window-bar { background: var(--canvas); display: flex; align-items: center; height: 38px; padding: 0 13px; gap: 20px; border-bottom: 1px solid var(--border); font-size: 10px; font-weight: 600; }
.traffic-lights { display: flex; gap: 5px; }
.traffic-lights i { width: 8px; height: 8px; border-radius: 50%; background: #ff5f57; }
.traffic-lights i:nth-child(2) { background: #ffbd2e; }
.traffic-lights i:nth-child(3) { background: #28c840; }
.window-hint { margin-left: auto; color: var(--muted); font-weight: 400; }
.workspace-body { display: grid; grid-template-columns: 56px 174px minmax(0, 1fr); min-height: 360px; }
.sidebar { display: flex; align-items: center; flex-direction: column; gap: 10px; padding: 15px 6px 10px; border-right: 1px solid var(--border); background: var(--canvas); }
.sidebar > img { border-radius: 8px; margin-bottom: 12px; width: 28px; height: 28px; }
.sidebar-item { width: 42px; display: flex; flex-direction: column; align-items: center; gap: 4px; padding: 8px 0; color: var(--muted); font-size: 9px; border-radius: 8px; }
.sidebar-item .icon { width: 19px; height: 19px; }
.sidebar-item.selected { background: var(--accent-soft); color: var(--accent-strong); }
.sidebar-item.bottom { margin-top: auto; }
.conversation-list { border-right: 1px solid var(--border); background: var(--surface); padding: 15px 7px; }
.conversation-list h3 { font-size: 16px; display: flex; justify-content: space-between; padding: 0 5px; }
.conversation-list h3 span { font-size: 19px; color: var(--muted); font-weight: 400; }
.search { color: var(--muted); background: var(--inset); display: flex; align-items: center; gap: 6px; margin: 13px 4px 15px; padding: 7px; border-radius: 6px; font-size: 10px; }
.search .icon { width: 12px; height: 12px; }
.conversation { display: flex; position: relative; gap: 7px; padding: 12px 6px; border-radius: 6px; }
.conversation.selected { background: var(--accent-soft); }
.avatar { width: 30px; height: 30px; display: grid; place-items: center; border-radius: 8px; flex-shrink: 0; font-size: 12px; font-weight: 500; }
.avatar .icon { width: 17px; height: 17px; }
.lavender { color: #4c6fff; background: #d7deff; }
.blue { color: #2563eb; background: #dbeafe; }
.coral { color: #bd4052; background: #ffe4e8; }
.conversation strong { font-size: 10px; font-weight: 600; }
.conversation p { font-size: 8px; color: var(--muted); margin-top: 5px; }
.conversation small { font-size: 7px; color: var(--muted); position: absolute; right: 5px; top: 14px; }
.chat-pane { min-width: 0; display: flex; flex-direction: column; }
.chat-header { min-height: 60px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; padding: 10px 16px; }
.chat-header strong { font-size: 12px; }
.chat-header small { display: block; margin-top: 5px; font-size: 8px; color: var(--muted); }
.chat-header small i { width: 5px; height: 5px; display: inline-block; border-radius: 50%; background: #22c55e; }
.chat-header > .icon { color: var(--accent); width: 19px; height: 19px; }
.chat-messages { padding: 14px 14px 20px; display: flex; flex-direction: column; align-items: flex-start; gap: 11px; flex: 1; }
.chat-date { display: block; width: 100%; text-align: center; color: var(--muted); font-size: 8px; margin-bottom: 3px; }
.bubble { max-width: 96%; padding: 9px 10px; border-radius: 8px; font-size: 10px; line-height: 1.5; }
.incoming { background: var(--inset); }
.outgoing { align-self: flex-end; background: var(--accent); color: white; }
.outgoing > span { display: flex; align-items: center; justify-content: end; gap: 3px; font-size: 7px; margin-top: 3px; }
.outgoing .icon { width: 10px; height: 10px; }
.file-bubble { display: flex; align-items: center; gap: 9px; border: 1px solid var(--border); border-radius: 8px; padding: 11px; }
.file-bubble > .icon { width: 24px; height: 24px; color: var(--accent); }
.file-bubble strong { font-size: 9px; font-weight: 500; }
.file-bubble small { display: block; color: var(--muted); font-size: 8px; margin-top: 4px; }
.voice { display: flex; align-items: center; gap: 9px; color: var(--accent-strong); font-size: 9px; }
.wave { display: flex; align-items: center; gap: 3px; height: 18px; }
.wave i { width: 2px; height: 6px; background: var(--accent); border-radius: 2px; }
.wave i:nth-child(2n) { height: 12px; }
.wave i:nth-child(3n) { height: 18px; }
.chat-composer { display: flex; align-items: center; gap: 10px; margin: 0 12px 12px; border: 1px solid var(--border); border-radius: 8px; padding: 7px; color: var(--muted); font-size: 9px; }
.chat-composer > span:first-child { font-size: 18px; }
.send { margin-left: auto; background: var(--accent); color: white; border-radius: 5px; padding: 4px; }
.send .icon { width: 12px; height: 12px; }
figcaption { display: flex; align-items: center; gap: 9px; margin-top: 16px; font-size: 10px; color: var(--muted); }
.caption-line { width: 20px; height: 2px; background: var(--coral); }
.preview-label { margin-left: auto; font-size: 9px; }
.features { padding-block: 38px 78px; }
.eyebrow { font-size: 12px; color: var(--accent-strong); margin-bottom: 14px; }
h2 { font-size: clamp(26px, 2.7vw, 34px); font-weight: 600; line-height: 1.4; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 36px; }
.feature-grid article { padding-right: 30px; }
.feature-grid article + article { padding-left: 36px; border-left: 1px solid var(--border); }
.feature-icon { color: var(--accent); display: inline-block; margin-bottom: 17px; }
.feature-grid h3 { font-size: 17px; font-weight: 600; margin-bottom: 10px; }
.feature-grid p { font-size: 14px; line-height: 1.85; color: var(--muted); }
.download-section { background: var(--surface); border-block: 1px solid var(--border); padding-block: 68px; }
.invite-download-panel { display: flex; align-items: center; justify-content: space-between; gap: 28px; margin-bottom: 28px; padding: 22px 24px; border: 1px solid var(--border); border-radius: 8px; background: var(--canvas); }
.invite-download-panel h3 { font-size: 18px; font-weight: 600; }
.invite-download-panel p:not(.eyebrow) { margin-top: 7px; color: var(--muted); font-size: 13px; }
.invite-verify-form { display: grid; grid-template-columns: minmax(190px, 240px) auto; gap: 9px; align-items: center; }
.invite-verify-form input { min-height: 45px; width: 100%; padding: 0 13px; border: 1px solid var(--border); border-radius: 7px; background: var(--surface); color: var(--text); font: inherit; }
.invite-verify-form input:focus { outline: 2px solid var(--accent); outline-offset: 2px; }
.invite-verify-form .button { border: 0; cursor: pointer; }
.invite-verify-form .text-link { grid-column: 1 / -1; min-height: 28px; font-size: 12px; color: var(--accent-strong); }
.invite-status { grid-column: 1 / -1; min-height: 1.3em; font-size: 12px; color: var(--muted); }
.invite-status.success { color: #15803d; }
.invite-status.error { color: #be123c; }
.download-heading { display: flex; justify-content: space-between; align-items: end; gap: 20px; margin-bottom: 32px; }
#version-info { font-size: 12px; line-height: 1.9; text-align: right; color: var(--muted); white-space: pre-line; }
.download-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border: 1px solid var(--border); border-radius: 8px; }
.download-card { padding: 27px; }
.download-card + .download-card { border-left: 1px solid var(--border); }
.platform-heading { display: flex; align-items: center; justify-content: space-between; margin-bottom: 21px; gap: 8px; }
.platform-heading > .icon { width: 30px; height: 30px; }
.platform-tag { background: var(--canvas); color: var(--muted); padding: 4px 7px; border-radius: 4px; font-size: 10px; }
.platform-tag.limited { color: #ad3546; background: #fff0f1; }
.download-card h3 { font-size: 24px; font-weight: 600; }
.requirements { margin-top: 8px; color: var(--muted); font-size: 12px; }
.platform-download { width: 100%; margin-top: 26px; }
.file-meta { margin-top: 11px; font-size: 11px; text-align: center; color: var(--muted); }
.platform-note { margin-top: 22px; font-size: 12px; line-height: 1.85; color: var(--muted); }
.secondary-download { display: inline-flex; align-items: center; gap: 6px; margin-top: 10px; font-size: 12px; color: var(--accent-strong); min-height: 32px; }
.secondary-download .icon { width: 14px; height: 14px; }
.download-footnote { display: flex; justify-content: space-between; gap: 20px; margin-top: 21px; color: var(--muted); font-size: 11px; }
.download-footnote a { display: inline-flex; gap: 7px; align-items: center; }
.download-footnote .icon { width: 14px; height: 14px; }
.disabled { background: var(--inset); color: var(--muted); pointer-events: none; }
.load-status { padding: 12px 16px; background: var(--accent-soft); color: var(--accent-strong); border-radius: 8px; font-size: 13px; margin-bottom: 20px; }
.changelog { display: grid; grid-template-columns: 1fr 2fr; gap: 70px; padding-block: 80px; }
.notes-heading > p:not(.eyebrow) { color: var(--muted); font-size: 14px; line-height: 1.85; margin-top: 18px; }
.notes-heading .text-link { color: var(--accent-strong); margin-top: 17px; }
.release-entry { padding-bottom: 30px; }
.release-entry + .release-entry { padding-top: 28px; border-top: 1px solid var(--border); }
.release-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 22px; }
.release-meta h3 { font-size: 22px; font-weight: 600; }
.release-meta time { margin-left: auto; font-size: 12px; color: var(--muted); }
.latest-tag { background: var(--accent-soft); color: var(--accent-strong); font-size: 10px; border-radius: 4px; padding: 4px 7px; }
.release-entry h4 { font-size: 18px; font-weight: 550; margin-bottom: 12px; }
.release-entry p { color: var(--muted); font-size: 13px; line-height: 1.9; }
.release-entry ul { margin: 25px 0 0; padding: 0 0 0 16px; }
.release-entry li { margin-top: 18px; padding-left: 3px; }
.release-entry li::marker { color: var(--accent); font-size: 10px; }
.release-entry li strong { font-size: 13px; font-weight: 550; display: block; margin-bottom: 3px; }
footer { border-top: 1px solid var(--border); }
.footer-inner { padding-block: 28px; display: flex; align-items: center; gap: 28px; }
footer .brand { font-size: 16px; }
.footer-legal { display: flex; flex-direction: column; gap: 4px; }
footer p { font-size: 11px; color: var(--muted); margin: 0; }
footer .icp-link { font-size: 11px; color: var(--muted); }
footer .icp-link:hover { color: var(--accent-strong); }
footer a:last-child { font-size: 12px; margin-left: auto; }
footer .icon { width: 15px; height: 15px; margin-left: 5px; }
@media (min-width: 1450px) { .hero { gap: 65px; } }
@media (max-width: 1100px) {
  .container { width: calc(100% - 64px); }
  .hero { gap: 24px; }
  .workspace-body { grid-template-columns: 48px 130px minmax(0, 1fr); }
  .conversation small { display: none; }
  .conversation { gap: 5px; padding-inline: 3px; }
  .conversation strong { font-size: 9px; }
  .conversation p { max-width: 67px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .chat-messages { padding-inline: 10px; }
  .download-card { padding: 22px; }
  .changelog { gap: 35px; }
}
@media (max-width: 900px) {
  nav { gap: 22px; }
  .hero { grid-template-columns: 1fr; padding-top: 55px; gap: 45px; }
  h1 { font-size: 52px; }
  .hero-copy { text-align: center; }
  .hero-actions, .hero-platforms { justify-content: center; }
  .workspace-figure { width: min(620px, 100%); margin-inline: auto; }
  .workspace-body { grid-template-columns: 56px 174px minmax(0, 1fr); }
  .conversation strong { font-size: 10px; }
  .conversation p { max-width: 110px; }
  .feature-grid article + article { padding-left: 24px; }
  .feature-grid article { padding-right: 18px; }
  .feature-grid p br { display: none; }
  .download-grid { grid-template-columns: 1fr; }
  .download-card + .download-card { border-left: none; border-top: 1px solid var(--border); }
  .download-card { display: grid; grid-template-columns: 1fr 1fr; column-gap: 28px; padding: 28px; }
  .platform-heading, .download-card h3, .requirements { grid-column: 1; }
  .platform-heading { justify-content: start; gap: 18px; margin-bottom: 15px; }
  .platform-download { grid-column: 2; grid-row: 1 / 3; align-self: center; margin-top: 0; }
  .file-meta { grid-column: 2; grid-row: 3; margin-top: 8px; }
  .platform-note, .secondary-download { grid-column: 1 / -1; }
}
@media (max-width: 600px) {
  html { scroll-padding-top: 82px; }
  .container { width: calc(100% - 40px); }
  .navbar { height: 68px; }
  .brand { font-size: 18px; gap: 8px; }
  .brand img { width: 30px; height: 30px; }
  nav { gap: 14px; font-size: 12px; }
  nav a:first-child, nav a:nth-child(3) { display: none; }
  nav .nav-download { padding-inline: 10px; }
  nav .nav-download .icon { display: none; }
  .hero { padding-block: 43px; gap: 32px; }
  .release-badge { margin-bottom: 20px; }
  h1 { font-size: 44px; }
  .hero-description { font-size: 14px; margin-top: 20px; }
  .hero-actions { gap: 17px; margin-top: 24px; }
  .button { padding-inline: 15px; }
  .workspace-body { grid-template-columns: 43px minmax(0, 1fr); min-height: 340px; }
  .conversation-list { display: none; }
  .sidebar { padding-inline: 3px; }
  .sidebar-item { width: 35px; }
  .chat-messages { padding-inline: 18px; }
  .bubble { font-size: 11px; }
  .chat-header strong { font-size: 13px; }
  .file-bubble strong { font-size: 10px; }
  figcaption { font-size: 9px; gap: 6px; }
  .caption-line { width: 12px; }
  .features { padding-block: 22px 45px; }
  h2 { font-size: 26px; }
  .feature-grid { grid-template-columns: 1fr; margin-top: 22px; gap: 0; }
  .feature-grid article, .feature-grid article + article { border-left: none; padding: 22px 0; display: grid; grid-template-columns: 36px 1fr; gap: 0 12px; }
  .feature-grid article + article { border-top: 1px solid var(--border); }
  .feature-icon { grid-row: 1 / 3; padding-top: 2px; }
  .feature-grid h3 { margin-bottom: 7px; }
  .feature-grid p { grid-column: 2; font-size: 13px; }
  .download-section { padding-block: 45px; }
  .invite-download-panel { display: block; padding: 20px; }
  .invite-verify-form { grid-template-columns: 1fr; margin-top: 17px; }
  .invite-verify-form .text-link { grid-column: auto; }
  .download-heading { display: block; margin-bottom: 22px; }
  #version-info { text-align: left; margin-top: 14px; white-space: normal; }
  .download-card { display: block; padding: 25px; }
  .platform-heading { justify-content: space-between; }
  .platform-download { margin-top: 21px; }
  .file-meta { margin-top: 10px; }
  .download-footnote { flex-direction: column; gap: 14px; }
  .changelog { grid-template-columns: 1fr; padding-block: 45px; gap: 30px; }
  .notes-heading p br { display: none; }
  .release-meta { gap: 8px; }
  .release-meta h3 { font-size: 20px; }
  .release-meta time { font-size: 11px; }
  .footer-inner { flex-wrap: wrap; gap: 18px; }
  .footer-legal { order: 3; width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}

/* Mobile platform illustrations use the same app tokens and icon family as the Mac preview. */
.phone { display: flex; flex-direction: column; width: min(258px, 100%); height: 510px; border: 6px solid #24272c; border-radius: 36px; overflow: hidden; background: var(--surface); color: var(--text); }
.phone--ios { background: #f2f2f7; }
.phone--android { border-radius: 28px; }
.phone-status { flex-shrink: 0; position: relative; display: flex; align-items: center; justify-content: space-between; height: 40px; padding: 0 18px; font-size: 10px; font-weight: 600; }
.phone-camera { position: absolute; top: 8px; left: 50%; transform: translateX(-50%); width: 66px; height: 18px; border-radius: 14px; background: #17181c; }
.phone--android .phone-camera { width: 10px; height: 10px; top: 13px; }
.phone-indicators { display: flex; align-items: center; gap: 6px; }
.phone-signal { display: flex; align-items: end; gap: 2px; height: 9px; }
.phone-signal i { width: 2px; height: 3px; border-radius: 1px; background: currentColor; }
.phone-signal i:nth-child(2) { height: 5px; }
.phone-signal i:nth-child(3) { height: 7px; }
.phone-signal i:nth-child(4) { height: 9px; }
.phone-battery { position: relative; width: 17px; height: 8px; border: 1px solid currentColor; border-radius: 2px; }
.phone-battery::before { content: ''; position: absolute; inset: 1px 3px 1px 1px; background: currentColor; border-radius: 1px; }
.phone-battery::after { content: ''; position: absolute; width: 2px; height: 4px; right: -3px; top: 1px; background: currentColor; border-radius: 1px; }
.phone-home-area { flex-shrink: 0; display: flex; align-items: center; justify-content: center; height: 21px; background: var(--surface); }
.phone-home-area > span { height: 4px; width: 78px; border-radius: 4px; background: #17181c; }
.phone--android .phone-home-area > span { height: 3px; width: 62px; }
.phone-chat-header { display: flex; align-items: center; gap: 9px; min-height: 58px; padding: 7px 12px; border-bottom: 1px solid var(--border); }
.phone-back { display: inline-flex; transform: rotate(180deg); }
.phone-back .icon { width: 18px; height: 18px; }
.phone-chat-header .avatar { width: 29px; height: 29px; }
.phone-chat-header strong { font-size: 12px; font-weight: 600; }
.phone-chat-header small { display: block; font-size: 8px; color: var(--muted); margin-top: 4px; }
.phone-chat-header small i { display: inline-block; width: 4px; height: 4px; border-radius: 50%; background: #22c55e; }
.phone-chat-header > .icon { margin-left: auto; width: 19px; height: 19px; color: var(--accent); }
.phone-messages { display: flex; flex-direction: column; align-items: start; flex: 1; gap: 15px; padding: 17px 12px; }
.phone-messages .chat-date { margin-bottom: 1px; }
.phone-messages .bubble { font-size: 10px; padding: 10px; }
.phone-messages .file-bubble { padding: 12px; }
.phone-messages .voice { font-size: 9px; gap: 10px; }
.phone-composer { display: flex; align-items: center; gap: 10px; padding: 8px; margin: 0 10px 5px; border: 1px solid var(--border); border-radius: 8px; color: var(--muted); font-size: 10px; }
.phone-composer > span:first-child { font-size: 20px; }
.phone-composer .send { padding: 6px; }



/* iPhone demonstrates group media and quoted replies; Android demonstrates voice calling. */
.phone-group-header { background: #f2f2f7; min-height: 52px; }
.phone-group-header > strong { font-size: 12px; }
.phone-group-header .avatar .icon { width: 18px; height: 18px; }
.phone-more { margin-left: auto; font-size: 19px; font-weight: 600; color: var(--accent); }
.group-messages { gap: 10px; padding: 12px 10px; background: var(--surface); }
.group-message { display: flex; gap: 7px; max-width: 100%; }
.group-message > .avatar { flex-shrink: 0; width: 24px; height: 24px; font-size: 10px; margin-top: 15px; }
.group-message > div { min-width: 0; }
.group-author { display: block; margin-bottom: 5px; color: var(--muted); font-size: 8px; }
.group-media { border-radius: 8px; overflow: hidden; width: 165px; max-width: 100%; background: var(--inset); }
.group-photo { display: block; width: 100%; height: 70px; object-fit: cover; }
.group-media > span { display: block; padding: 7px 9px; font-size: 9px; }
.group-message .bubble { max-width: 100%; font-size: 9px; padding: 9px; }
.group-reply { align-self: flex-end; }
.phone-messages .group-reply { font-size: 9px; }
.quoted-message { border-left: 2px solid #c5ccff; padding: 3px 7px; margin-bottom: 8px; background: #405de0; border-radius: 0 4px 4px 0; }
.quoted-message strong { font-size: 8px; font-weight: 600; }
.quoted-message p { margin-top: 3px; font-size: 8px; }
.phone--ios .phone-composer { background: var(--surface); margin-top: 7px; }
.phone--call { background: #070a16; color: #f4f6ff; }
.phone--call .phone-camera { background: #000; }
.call-preview-header { display: flex; align-items: center; justify-content: space-between; padding: 10px 18px; }
.call-preview-header strong { display: block; font-size: 12px; font-weight: 600; }
.call-preview-header small { display: block; font-size: 9px; margin-top: 6px; color: #a8b0c8; font-variant-numeric: tabular-nums; }
.call-preview-header > span { font-size: 19px; }
.call-preview-person { display: flex; align-items: center; justify-content: center; flex-direction: column; flex: 1; padding: 12px 0 18px; }
.call-avatar { display: grid; place-items: center; width: 88px; height: 88px; border-radius: 50%; color: #c5ccff; background: #1b2458; font-size: 33px; margin-bottom: 19px; }
.call-preview-person > strong { font-size: 21px; font-weight: 500; }
.call-preview-person > p { font-size: 10px; color: #a8b0c8; margin-top: 10px; }
.call-wave { display: flex; align-items: center; gap: 4px; height: 24px; margin-top: 23px; }
.call-wave i { width: 3px; height: 5px; border-radius: 3px; background: #9aa8ff; }
.call-wave i:nth-child(2n) { height: 12px; }
.call-wave i:nth-child(3n) { height: 18px; }
.call-wave i:nth-child(7) { height: 24px; background: #ff8b72; }
.call-preview-controls { display: flex; align-items: start; justify-content: space-evenly; margin: 0 12px 24px; padding: 12px 4px; background: #171c2c; border-radius: 24px; }
.call-control { display: flex; flex-direction: column; align-items: center; gap: 7px; }
.call-control > span { display: grid; place-items: center; width: 40px; height: 40px; border-radius: 50%; background: #242a3e; }
.call-control .icon { width: 19px; height: 19px; }
.call-control small { font-size: 8px; color: #a8b0c8; }
.call-control--active > span { background: #e6eaff; color: #2f4ae0; }
.call-control--end > span { background: #e11d48; color: #fff; }
.phone--call .phone-home-area { background: #070a16; }
.phone--call .phone-home-area > span { background: #f4f6ff; }


/* A quiet, frameless product showcase. Only the three navigation lines remain. */
[hidden] { display: none !important; }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
button { -webkit-tap-highlight-color: transparent; }
button:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
.hero { grid-template-columns: minmax(0, .82fr) minmax(0, 1.3fr); gap: 60px; padding-block: 56px 68px; }
.hero-copy { padding-bottom: 15px; }
.release-badge { background: var(--accent-soft); padding: 8px 12px; border-radius: 20px; }
h1 { font-size: clamp(42px, 4.15vw, 60px); line-height: 1.3; }
.hero-description { font-size: 15px; }
.hero-actions { gap: 18px; }
.preview-showcase { min-width: 0; scroll-margin-top: 16px; }
.preview-stage { position: relative; touch-action: pan-y pinch-zoom; }
.preview-slide { margin: 0; }
.preview-visual { min-height: 558px; display: flex; align-items: center; justify-content: center; padding: 24px 14px; }
.preview-showcase.is-enhanced .preview-stage { height: 558px; }
.is-enhanced .preview-slide { position: absolute; inset: 0; display: flex; flex-direction: column; animation: preview-enter .5s cubic-bezier(.2,.7,.2,1) both; }
.is-enhanced .preview-visual { flex: 1; min-height: 0; }
.preview-visual .workspace { width: 100%; border-color: #d4d6df; border-radius: 12px; box-shadow: 0 20px 50px -25px rgba(23,24,28,.22), 0 4px 12px -6px rgba(23,24,28,.1); }
.preview-visual .phone { flex-shrink: 0; width: 258px; height: 510px; box-shadow: 0 20px 40px -24px rgba(23,24,28,.32); }
.preview-navigation { display: flex; align-items: center; justify-content: center; margin-top: 4px; }
.preview-tabs { display: flex; gap: 8px; justify-content: center; align-items: center; }
.preview-tab { appearance: none; border: 0; background: transparent; display: flex; align-items: center; padding: 0 3px; width: 50px; height: 44px; border-radius: 8px; cursor: pointer; transition: width .3s ease; }
.preview-tab[aria-selected="true"] { width: 78px; }
.preview-track { display: block; width: 100%; height: 3px; background: #d5d8df; overflow: hidden; border-radius: 3px; transition: background .2s; }
.preview-track > span { display: block; width: var(--progress, 0%); height: 100%; background: var(--accent); border-radius: inherit; }
.preview-tab[aria-selected="true"] .preview-track { background: #9aa8ff; }
.preview-tab:hover .preview-track { background: #9aa8ff; }
.features { padding-top: 28px; border-top: 1px solid var(--border); }
.download-grid { background: var(--canvas); }
.download-card { transition: background .2s; }
.download-card:hover { background: #fff; }
@keyframes preview-enter { from { opacity: 0; transform: translateY(10px) scale(.985); } to { opacity: 1; transform: translateY(0) scale(1); } }
@media (max-width: 1200px) {
  .hero { gap: 32px; }
}
@media (max-width: 1050px) {
  .hero { grid-template-columns: minmax(0, .8fr) minmax(0, 1.1fr); gap: 24px; }
  .hero-actions { flex-direction: column; align-items: start; gap: 8px; }
}
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; gap: 24px; padding-top: 45px; }
  .hero-copy { padding-bottom: 0; }
  .hero-actions { flex-direction: row; align-items: center; gap: 20px; }
  .preview-showcase { width: min(660px, 100%); margin-inline: auto; }
}
@media (max-width: 600px) {
  .hero { padding-block: 35px 38px; gap: 18px; }
  h1 { font-size: 43px; }
  .hero-description { font-size: 14px; }
  .preview-showcase.is-enhanced .preview-stage { height: 540px; }
  .preview-visual { padding: 15px 4px; min-height: 540px; }
  .preview-visual .phone { width: min(258px, 100%); }
  .preview-navigation { margin-top: 0; }
  .features { padding-top: 26px; }
}
@media (prefers-reduced-motion: reduce) {
  .is-enhanced .preview-slide { animation: none; }
  .preview-tab, .preview-track { transition: none; }
}