:root {
  --paper: #faf9f6;
  --ink: #20211e;
  --muted: #62635e;
  --red: #c93620;
  --line: #d7d6ce;
  color-scheme: light;
  color: var(--ink);
  background: var(--paper);
  font-family: "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-synthesis: none;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 24px; scrollbar-gutter: stable; }
body { margin: 0; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button { border: 0; font: inherit; color: inherit; cursor: pointer; }
a, button { touch-action: manipulation; -webkit-tap-highlight-color: transparent; transition: color .18s, background-color .18s; }
a:focus-visible, button:focus-visible { outline: 3px solid var(--red); outline-offset: 5px; }
h1, h2, p { margin: 0; }
h1, h2 { text-wrap: balance; }
img { display: block; max-width: 100%; }
svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
section { scroll-margin-top: 24px; }
[hidden] { display: none !important; }
.wrap { width: min(1328px, calc(100% - 112px)); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.skip-link { position: fixed; z-index: 20; top: 12px; left: -10000px; padding: 14px 20px; background: var(--ink); color: white; }
.skip-link:focus { left: 12px; }
.site-header { height: 112px; display: flex; gap: 32px; align-items: center; }
.wordmark { position: relative; display: inline-block; font-size: 38px; font-weight: 900; letter-spacing: -2px; line-height: 1; white-space: nowrap; }
.brand-dot { position: absolute; right: -12px; top: -4px; width: 9px; height: 9px; border-radius: 50%; background: var(--red); }
.brand-description { margin-left: 6px; padding-left: 26px; border-left: 1px solid var(--line); font-size: 13px; line-height: 1.6; letter-spacing: .025em; }
.site-header nav { margin-left: auto; display: flex; align-items: center; gap: 32px; font-size: 14px; }
.site-header nav a, .login-link { display: flex; align-items: center; gap: 18px; min-height: 44px; }
.site-header nav a:hover, .login-link:hover { color: var(--red); }
.login-link { padding-left: 28px; border-left: 1px solid var(--line); font-size: 14px; }
.hero { padding: 97px 0 113px; text-align: center; }
.hero h1 { font-weight: 900; font-size: clamp(62px, 6.75vw, 102px); line-height: 1.22; letter-spacing: -.06em; }
.hero h1 span { white-space: nowrap; }
.hero-description { margin-top: 30px; font-size: 18px; line-height: 1.9; color: #585952; letter-spacing: .035em; }
.mobile-break { display: none; }
.hero-actions { display: flex; align-items: center; justify-content: center; gap: 14px; margin-top: 32px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-width: 148px; min-height: 50px; padding: 0 27px; border-radius: 100px; font-size: 16px; font-weight: 600; }
.primary { color: white; background: var(--red); border: 1px solid var(--red); }
.primary:hover { background: #a52c1b; }
.secondary { border: 1px solid #888b81; background: transparent; }
.secondary:hover { background: #eeede7; }
.text-link { display: inline-flex; align-items: center; min-height: 44px; gap: 18px; font-size: 14px; }
.text-link:hover { color: var(--red); }
.text-link span[aria-hidden] { font-size: 21px; }
.eyebrow { display: flex; align-items: center; gap: 10px; font-size: 13px; letter-spacing: .07em; line-height: 1.5; }
.little-dot { flex: none; width: 6px; height: 6px; border-radius: 50%; background: var(--red); }
h2 { font-size: clamp(36px, 4.1vw, 59px); font-weight: 700; line-height: 1.23; letter-spacing: -.05em; }
.editing-section { background: #efeee8; padding: 80px 0 90px; }
.section-heading { display: flex; justify-content: space-between; align-items: flex-end; gap: 32px; margin-bottom: 46px; }
.section-heading h2 { margin-top: 23px; }
.section-intro p { color: var(--muted); font-size: 15px; line-height: 1.9; margin-bottom: 14px; }
.section-intro .text-link { border-bottom: 1px solid #8c8d84; font-weight: 600; }
.demo { display: grid; grid-template-columns: 1fr 1fr; min-width: 0; background: #f8f7f2; border: 1px solid #dbdbd0; }
.demo-visual { display: flex; flex-direction: column; align-items: center; background: #e3e2d9; padding: 18px 30px 24px; min-width: 0; }
.visual-toolbar { width: 100%; display: flex; align-items: center; justify-content: space-between; color: #5c5e54; font-size: 12px; margin-bottom: 18px; }
.quiet-button, .icon-button { display: inline-flex; align-items: center; justify-content: center; gap: 12px; min-width: 38px; min-height: 38px; padding: 7px; background: transparent; border-radius: 50%; }
.quiet-button:hover, .icon-button:hover { background: #dfdfd4; color: var(--ink); }
.poster { position: relative; container-type: inline-size; width: 356px; max-width: 100%; aspect-ratio: 1064 / 1478; flex: none; box-shadow: 0 10px 28px #30342615; }
.poster-base { width: 100%; height: 100%; }
.poster-copy { position: absolute; left: 13.15%; color: #8e2424; font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif; font-size: 3.05cqw; font-weight: 500; line-height: 1.15; letter-spacing: .01em; white-space: nowrap; }
.poster-time { top: 31.85%; font-family: "Courier New", monospace; font-size: 3.55cqw; font-weight: 600; letter-spacing: -.035em; font-variant-numeric: tabular-nums; }
.date-divider { display: inline-block; margin-inline: .8em; }
.poster-launch { top: 48.85%; font-size: 3.18cqw; }
.poster-channel { top: 36.08%; }
.poster-brand { top: 40.44%; }
.device { position: absolute; max-width: none; transition: opacity .5s; pointer-events: none; }
.device-before { left: 23.3%; top: 51.3%; width: 36.1%; height: 39%; opacity: 1; }
.device-after { left: 18.23%; top: 58.5%; width: 48%; height: 25.2%; opacity: 0; }
.poster[data-view="result"] .device-before { opacity: 0; }
.poster[data-view="result"] .device-after { opacity: 1; }
.compare-switch { display: flex; gap: 3px; padding: 4px; margin-top: 21px; background: #d3d4c9; border-radius: 100px; }
.compare-switch button { padding: 10px 26px; min-height: 41px; background: transparent; border-radius: 100px; font-size: 12px; }
.compare-switch button[aria-pressed="true"] { background: var(--paper); box-shadow: 0 1px 4px #30322610; }
.compare-switch button:hover { background: #f4f3ec; }
.chat { min-width: 0; height: 662px; display: flex; flex-direction: column; padding: 0 32px 25px; background: #f8f7f2; }
.chat-header { flex: none; height: 76px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid #e1e1d8; }
.chat-wordmark { font-size: 24px; font-weight: 800; letter-spacing: -1px; }
.chat-wordmark span { color: var(--red); vertical-align: super; margin-left: 2px; }
.chat-controls { display: flex; gap: 5px; color: #666a5f; }
.icon-button { width: 38px; height: 38px; }
.icon-button svg { width: 18px; height: 18px; }
.play-icon { display: none; }
.demo[data-paused="true"] .play-icon { display: block; }
.demo[data-paused="true"] .pause-icon { display: none; }
.chat-thread { min-height: 0; flex: 1; display: flex; flex-direction: column; gap: 16px; overflow-y: auto; overscroll-behavior: contain; padding: 28px 0 20px; scrollbar-width: thin; scrollbar-color: #bfc4b5 transparent; scrollbar-gutter: stable; scroll-padding-block: 16px; }
.chat-thread:focus-visible { outline: 2px solid var(--red); outline-offset: -2px; border-radius: 6px; }
.message { max-width: 89%; font-size: 15px; line-height: 1.85; animation: message-in .24s ease-out both; flex: none; }
.message p { margin: 0; }
.message.assistant { align-self: flex-start; padding: 0 8px 0 0; }
.message.welcome { color: #686b62; font-size: 14px; }
.message.user { align-self: flex-end; border-radius: 19px 19px 5px 19px; background: #e9eade; padding: 15px 19px; }
.message.user.short { padding: 10px 18px; }
.attachment { display: flex; align-items: center; gap: 12px; margin-bottom: 11px; padding-bottom: 11px; border-bottom: 1px solid #d7dacb; }
.attachment img { width: 64px; height: 45px; object-fit: contain; background: white; border-radius: 5px; }
.attachment span { font-size: 12px; color: #5b6152; }
.message.confirmation-message { width: 100%; max-width: 100%; padding: 0; }
.confirmation-card { padding: 19px 21px; border: 1px solid #d6d9cd; border-radius: 15px; background: #fffef9; }
.confirmation-title { font-size: 15px; font-weight: 600; }
.confirmation-list { font-variant-numeric: tabular-nums; list-style: none; margin: 13px 0; padding: 0; display: grid; gap: 11px; }
.confirmation-list li { display: flex; align-items: flex-start; gap: 12px; line-height: 1.65; }
.change-number { flex: none; display: grid; place-items: center; width: 22px; height: 22px; border: 1px solid #cfd3c5; border-radius: 50%; font-size: 11px; color: #626a58; margin-top: 1px; font-variant-numeric: tabular-nums; }
.confirmation-list strong { font-size: 13px; font-weight: 600; }
.confirmation-list p { font-size: 13px; color: #63685d; }
.old-value { color: #6c7065; }
.change-arrow { color: #929887; margin-inline: 12px; }
.new-value { color: var(--ink); font-weight: 600; }
.preserve-note { border-top: 1px solid #e1e3d9; padding-top: 11px; font-size: 12px; color: #6f7567; line-height: 1.7; }
.confirmation-action { min-height: 40px; margin-top: 13px; display: flex; align-items: center; }
.confirm-demo { min-height: 40px; padding: 8px 22px; border-radius: 100px; background: var(--red); color: white; font-size: 13px; font-weight: 600; transition: background-color .16s, transform .16s; }
.confirm-demo:hover { background: #a52c1b; }
.confirm-demo:disabled { cursor: default; }
.demo[data-phase="confirming"] .confirm-demo { background: #a52c1b; transform: scale(.97); }
.confirmation-receipt { display: inline-flex; align-items: center; gap: 7px; color: #59654c; font-size: 13px; }
.confirmation-receipt svg { width: 15px; height: 15px; stroke-width: 1.8; }
.confirmation-receipt:focus-visible { outline: 2px solid var(--red); outline-offset: 4px; }
.typing { display: flex; gap: 5px; align-items: center; min-height: 24px; padding: 5px 0; }
.typing span { width: 5px; height: 5px; border-radius: 50%; background: #8f9487; animation: typing-dot 1s ease-in-out infinite; }
.typing span:nth-child(2) { animation-delay: .14s; }
.typing span:nth-child(3) { animation-delay: .28s; }
.composer { flex: none; min-height: 61px; border: 1px solid #d9ddd0; background: #fffefa; border-radius: 17px; padding: 13px 13px 13px 18px; display: flex; align-items: center; gap: 18px; font-size: 13px; line-height: 1.7; color: #6c7065; }
#draft-copy { flex: 1; min-width: 0; }
.demo[data-phase="draft"] #draft-copy { color: var(--ink); }
.demo[data-phase="draft"] #draft-copy::after { content: ""; display: inline-block; height: 1em; width: 1px; margin-left: 3px; vertical-align: -.1em; background: var(--red); animation: cursor-blink 1s step-end infinite; }
.send-icon { display: grid; place-items: center; flex: none; width: 32px; height: 32px; background: #e8ebdf; color: #676f5f; border-radius: 50%; }
.demo[data-phase="draft"] .send-icon { background: var(--red); color: white; }
.demo[data-paused="true"] .typing span, .demo[data-paused="true"] #draft-copy::after { animation-play-state: paused; }
.no-script { margin-top: 18px; font-size: 13px; }
.creation-section { background: #282623; color: #f4f2e8; padding: 94px 0 100px; }
.creation-grid { display: grid; grid-template-columns: 1.06fr 1fr; gap: 56px; align-items: center; }
.creation-section .eyebrow { color: #d0cbc2; }
.status-pill { padding: 4px 11px; border: 1px solid #79736b; border-radius: 100px; font-size: 11px; letter-spacing: .02em; margin-left: 5px; }
.creation-section h2 { margin-top: 27px; font-weight: 600; }
.creation-description { margin-top: 24px; color: #c4bfb6; font-size: 16px; line-height: 1.9; }
.creation-copy .text-link { color: #f4f2e8; border-bottom: 1px solid #817b72; margin-top: 23px; }
.creation-copy .text-link:hover { color: white; background: #3b3630; }
.idea-note { padding: 31px 0; border-top: 1px solid #615b53; border-bottom: 1px solid #615b53; }
.idea-quote { font-size: clamp(20px, 2.15vw, 31px); line-height: 1.9; letter-spacing: .015em; margin-bottom: 30px; }
.idea-uses { display: flex; gap: 26px; flex-wrap: wrap; font-size: 12px; color: #cec5b9; }
.site-footer { display: flex; align-items: center; min-height: 145px; gap: 40px; }
.site-footer .wordmark { font-size: 31px; }
.site-footer p { color: var(--muted); font-size: 13px; letter-spacing: .04em; }
.site-footer .text-link { margin-left: auto; font-size: 12px; }
dialog { width: min(95vw, 670px); max-height: 95dvh; border: 0; padding: 18px 24px 26px; background: var(--paper); color: var(--ink); overscroll-behavior: contain; box-shadow: 0 16px 60px #0004; }
dialog::backdrop { background: #131611bd; }
body:has(dialog[open]) { overflow: hidden; }
.dialog-toolbar { position: sticky; top: -18px; z-index: 2; display: flex; align-items: center; justify-content: space-between; padding-bottom: 14px; gap: 28px; background: var(--paper); }
.dialog-toolbar h2 { font-size: 15px; font-weight: 500; letter-spacing: 0; }
.dialog-toolbar button { border-radius: 0; font-size: 14px; min-height: 44px; }
#dialog-art .poster { width: 100%; box-shadow: none; }
@keyframes message-in { from { opacity: 0; transform: translateY(7px); } to { opacity: 1; transform: translateY(0); } }
@keyframes typing-dot { 0%, 65%, 100% { opacity: .35; } 30% { opacity: 1; } }
@keyframes cursor-blink { 0%, 45% { opacity: 1; } 46%, 100% { opacity: 0; } }
@media (max-width: 1150px) {
  .wrap { width: calc(100% - 72px); }
  .site-header { gap: 25px; }
  .brand-description { font-size: 11px; padding-left: 21px; }
  .site-header nav { gap: 24px; font-size: 13px; }
  .hero { padding: 82px 0 95px; }
  .hero h1 { font-size: 6.8vw; }
  .hero-description { font-size: 16px; }
  .chat { padding-inline: 25px; height: 620px; }
  .demo-visual { padding-inline: 23px; }
  .poster { width: 330px; }
  .message { font-size: 14px; max-width: 94%; }
  .section-intro p { font-size: 13px; }
}
@media (max-width: 850px) {
  .site-header nav { display: none; }
  .login-link { margin-left: auto; }
  .hero { padding-top: 67px; }
  .hero-description { font-size: 15px; }
  .section-intro { max-width: 245px; }
  .section-intro br { display: none; }
  .chat { padding-inline: 18px; height: 595px; }
  .message { font-size: 13px; }
  .message.user { padding: 12px 14px; }
  .chat-thread { gap: 14px; }
  .demo-visual { justify-content: center; padding-inline: 18px; }
  .visual-toolbar { margin-bottom: 20px; }
  .creation-grid { gap: 35px; }
  .idea-quote br { display: none; }
}
@media (max-width: 600px) {
  html { scroll-padding-top: 15px; }
  .wrap { width: calc(100% - 40px); }
  .site-header { height: 91px; gap: 21px; }
  .wordmark { font-size: 30px; letter-spacing: -1.5px; }
  .brand-dot { width: 7px; height: 7px; top: -3px; right: -9px; }
  .brand-description { margin: 0; border: 0; padding: 0; max-width: 141px; font-size: 10px; line-height: 1.65; }
  .login-link { padding: 0; border: 0; font-size: 12px; gap: 10px; }
  .hero { padding: 59px 0 69px; text-align: left; }
  .hero h1 { font-size: clamp(42px, 11.5vw, 66px); line-height: 1.23; letter-spacing: -.055em; }
  .hero h1 span { display: block; }
  .hero-description { margin-top: 24px; font-size: 14px; line-height: 1.85; letter-spacing: .01em; }
  .mobile-break { display: initial; }
  .hero-actions { margin-top: 31px; justify-content: flex-start; gap: 12px; }
  .button { min-width: 128px; min-height: 48px; padding-inline: 25px; font-size: 14px; }
  .editing-section { padding: 52px 0 55px; }
  .section-heading { display: block; margin-bottom: 27px; }
  .section-heading h2 { font-size: 35px; margin-top: 20px; line-height: 1.3; }
  .section-intro { max-width: none; margin-top: 22px; }
  .section-intro p { font-size: 14px; margin-bottom: 7px; }
  .section-intro br { display: initial; }
  .demo { grid-template-columns: 1fr; }
  .demo-visual { padding: 10px 18px 14px; }
  .visual-toolbar { margin-bottom: 7px; font-size: 11px; }
  .visual-toolbar .quiet-button { min-height: 32px; }
  .visual-toolbar svg { width: 18px; height: 18px; }
  .poster { width: 206px; }
  .compare-switch { margin-top: 13px; padding: 3px; }
  .compare-switch button { min-height: 34px; padding: 7px 22px; font-size: 11px; }
  .chat { height: 435px; padding: 0 17px 15px; }
  .chat-header { height: 53px; }
  .chat-wordmark { font-size: 20px; }
  .chat-thread { gap: 12px; padding: 15px 0; }
  .message { font-size: 13px; line-height: 1.8; max-width: 92%; }
  .message.welcome { font-size: 13px; }
  .confirmation-card { padding: 14px; border-radius: 12px; }
  .confirmation-title { font-size: 14px; }
  .confirmation-list { gap: 8px; margin-block: 11px; }
  .confirmation-list li { gap: 9px; }
  .confirmation-list strong, .confirmation-list p { font-size: 12px; }
  .confirmation-list li:not(:first-child) > div { flex: 1; display: flex; align-items: baseline; justify-content: space-between; gap: 8px; }
  .confirmation-list li:not(:first-child) p { white-space: nowrap; }
  .preserve-note { font-size: 11px; padding-top: 9px; }
  .confirmation-action { margin-top: 11px; min-height: 44px; }
  .confirm-demo { min-height: 44px; font-size: 12px; }
  .confirmation-receipt { font-size: 12px; }
  .message.user { padding: 11px 14px; }
  .attachment { gap: 10px; padding-bottom: 9px; margin-bottom: 9px; }
  .attachment img { width: 51px; height: 34px; }
  .attachment span { font-size: 11px; }
  .composer { min-height: 49px; max-height: 92px; padding: 10px 11px 10px 13px; font-size: 12px; border-radius: 13px; gap: 12px; }
  .send-icon { width: 27px; height: 27px; }
  .send-icon svg { width: 18px; height: 18px; }
  .creation-section { padding: 56px 0; }
  .creation-grid { grid-template-columns: 1fr; gap: 39px; }
  .creation-section h2 { font-size: 36px; line-height: 1.3; margin-top: 24px; }
  .creation-description { font-size: 14px; margin-top: 23px; }
  .creation-copy .text-link { margin-top: 18px; }
  .idea-note { padding: 25px 0; }
  .idea-quote { font-size: 22px; line-height: 1.9; margin-bottom: 23px; }
  .idea-quote br { display: initial; }
  .idea-uses { font-size: 11px; gap: 23px; }
  .site-footer { min-height: 140px; flex-wrap: wrap; padding: 31px 0; gap: 20px; }
  .site-footer .wordmark { font-size: 26px; }
  .site-footer p { font-size: 11px; }
  .site-footer .text-link { min-height: 30px; gap: 10px; font-size: 11px; }
  dialog { padding: 12px 13px 16px; max-width: calc(100vw - 20px); }
  .dialog-toolbar { top: -12px; gap: 12px; }
}
@media (max-width: 360px) {
  .wrap { width: calc(100% - 32px); }
  .brand-description { max-width: 113px; font-size: 9px; }
  .site-header { gap: 19px; }
  .hero { padding-top: 45px; }
  .hero h1 { font-size: 42px; }
  .hero-description { font-size: 13px; }
  .button { padding-inline: 22px; }
  .section-heading h2, .creation-section h2 { font-size: 31px; }
  .poster { width: 190px; }
  .chat { padding-inline: 13px; height: 455px; }
  .idea-quote { font-size: 19px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

.demo-caption{font-size:12px;color:#77716a;margin:20px 0;line-height:1.7}.demo.media-unavailable{display:none}