.toutiao-product-page {
  --tt-accent: #b5a2f2;
  --tt-line: rgba(210, 220, 235, .15);
  --tt-muted: #94a8b8;
}
.tt-main { overflow: clip; }
.tt-main :is(h1,h2,h3,p,figure) { margin: 0; }
.tt-main button { font-family: inherit; }
.tt-container { width: min(1200px, calc(100% - 96px)); margin-inline: auto; }

/* Centered download hero, with the site's existing textured background. */
.tt-hero { position: relative; min-height: 100svh; min-height: 100dvh; display: flex; flex-direction: column; align-items: center; justify-content: center; padding-block: 140px 88px; text-align: center; }
.tt-hero-copy { width: 100%; max-width: 680px; }
.tt-product-name { display: inline-flex; align-items: center; gap: 9px; margin-bottom: 26px; font-size: 13px; font-weight: 550; color: #dce4ef; }
.tt-product-name img { border-radius: 8px; }
.tt-product-status { color: var(--tt-muted); padding-left: 11px; margin-left: 2px; border-left: 1px solid var(--tt-line); font-size: 11px; font-weight: 400; }
.tt-hero h1 { display: flex; justify-content: center; gap: .25em; white-space: nowrap; font-size: clamp(52px, 5.3vw, 72px); font-weight: 650; line-height: 1.12; letter-spacing: -.045em; text-shadow: 0 4px 6px #0003; }
.tt-hero h1 > span { display: inline-block; }
.tt-hero .tt-hero-tagline { margin-top: 28px; color: #ccd8e1; font-size: 17px; line-height: 1.8; font-weight: 400; letter-spacing: .02em; }
.tt-hero-actions { display: flex; flex-direction: column; align-items: center; gap: 28px; margin-top: 48px; }
.tt-download-group { display: flex; flex-direction: column; align-items: center; max-width: 100%; }
.tt-platform-downloads { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; }
.tt-download, .tt-secondary { display: inline-flex; align-items: center; justify-content: center; gap: 9px; min-height: 40px; padding: 10px 17px; border: 1px solid #ffffff28; border-radius: 8px; font-size: 14px; line-height: 18px; letter-spacing: .02em; background: linear-gradient(#ffffff08, #ffffff10); color: #e7e6ef; cursor: pointer; box-shadow: inset 0 1px #ffffff12, inset 0 -1px #0003, 0 0 0 2px #0003; transition: background .2s, border-color .2s, box-shadow .2s, transform .15s; }
.tt-download strong { font-weight: 550; font-size: inherit; }
.tt-download.is-primary { background: linear-gradient(#c1aff8, #a48ae4); color: #201b30; border-color: #d5c8fb; box-shadow: 0 0 0 2px #0005, 0 0 18px #b5a2f225, inset 0 1px #ffffff80, inset 0 -1px #49316755; }
.tt-download:hover { border-color: #ffffff60; background: linear-gradient(#ffffff0d, #ffffff18); transform: translateY(-1px); }
.tt-download.is-primary:hover { background: linear-gradient(#cdbdfb, #b09ae9); box-shadow: 0 0 0 2px #0005, 0 0 24px #b5a2f23d, inset 0 1px #ffffff80, inset 0 -1px #49316755; }
.tt-download:active, .tt-secondary:active { transform: translateY(1px); }
.tt-download:disabled { cursor: not-allowed; opacity: .6; transform: none; }
.tt-download > span:not(.tt-os-icon) { display: grid; text-align: left; gap: 3px; }
.tt-download small { color: var(--tt-muted); font-size: 11px; }
.tt-os-icon { display: inline-flex; flex: none; width: 17px; height: 17px; }
.tt-os-icon svg, .tt-download > svg { width: 17px; height: 17px; }
.tt-platform-note { display: flex; justify-content: center; flex-wrap: wrap; gap: 10px; margin-top: 17px; color: #8495a7; font-size: 10px; font-family: "SFMono-Regular", Consolas, monospace; letter-spacing: .02em; line-height: 1.8; }
.tt-platform-note span { padding-left: 10px; border-left: 1px solid var(--tt-line); }
.tt-secondary { min-height: 34px; padding: 7px 13px; border-radius: 999px; background: #b5a2f208; border-color: #b5a2f23b; box-shadow: inset 0 1px #ffffff08; font-size: 12px; color: #bcb3cf; gap: 14px; }
.tt-secondary svg, .tt-text-link svg, .tt-related-links svg { width: 16px; height: 16px; }
.tt-secondary:hover { background: #b5a2f215; border-color: #b5a2f277; color: #eee7ff; }
.tt-scroll-cue { position: absolute; bottom: 28px; display: flex; flex-direction: column; align-items: center; gap: 7px; color: #7893a5; font-size: 10px; letter-spacing: .08em; }
.tt-scroll-cue svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 1.5; transition: transform .2s; }
.tt-scroll-cue:hover svg { transform: translateY(3px); }
.tt-hero-copy > * { animation: tt-enter .8s both cubic-bezier(.22,1,.36,1); }
.tt-hero-copy h1 { animation-delay: .08s; }
.tt-hero-copy .tt-hero-tagline { animation-delay: .16s; }
.tt-hero-copy .tt-hero-actions { animation-delay: .24s; }
@keyframes tt-enter { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: translateY(0); } }

/* An interactive workbench inside a quiet desktop bezel. */
.tt-showcase { padding-block: 36px 24px; scroll-margin-top: 105px; }
.tt-showcase-heading { margin-bottom: 52px; text-align: center; }
.tt-showcase-heading h2 { font-size: 22px; font-weight: 550; line-height: 1.6; letter-spacing: .015em; }
.tt-showcase-heading p { font-size: 21px; color: var(--tt-muted); font-weight: 450; line-height: 1.6; }
.tt-demo-stage { position: relative; padding: 24px 24px 28px; border: 1px solid #c4bfd929; border-radius: 22px; background: linear-gradient(150deg, #ffffff06, #ffffff02); box-shadow: inset 0 1px 1px #ffffff1a, 0 0 0 7px #ffffff02, 0 0 60px -22px #b5a2f247, 0 28px 70px -28px #0009; }
.tt-hero-demo { position: relative; width: 100%; }
.tt-app-window { overflow: hidden; border-radius: 12px; border: 1px solid #ffffff38; background: #f7f7f8; box-shadow: 0 12px 44px #0006; transition: box-shadow .35s; }
.tt-hero-demo.is-hover .tt-app-window { box-shadow: 0 18px 50px #0008; }
.tt-window-bar { height: 38px; display: flex; align-items: center; gap: 16px; padding: 0 14px; color: #73737c; background: #e9eaed; border-bottom: 1px solid #d7d9df; font-size: 10px; }
.tt-window-dots { display: flex; gap: 6px; }
.tt-window-dots i { width: 9px; height: 9px; border-radius: 50%; background: #ff6057; }
.tt-window-dots i:nth-child(2) { background: #ffbd2e; }
.tt-window-dots i:nth-child(3) { background: #27c93f; }
.tt-live-label { margin-left: auto; font-size: 9px; color: #84769c; }
.tt-window-bar > button { display: grid; place-items: center; width: 26px; height: 26px; padding: 0; border: 1px solid #00000012; border-radius: 5px; background: #ffffff50; color: #686171; cursor: pointer; font-size: 16px; }
.tt-window-bar > button:hover { background: #ffffffc9; color: #33234f; }
.tt-demo-viewport { height: 570px; overflow: hidden; background: #f7f7f8; }
.tt-demo-viewport iframe { display: block; width: 100%; height: 100%; border: 0; background: #f7f7f8; }
.tt-demo-footer { display: flex; justify-content: space-between; gap: 12px; padding: 8px 14px; background: #f6f6f8; color: #7b7b85; font-size: 9px; }
.tt-demo-dock { display: flex; align-items: center; justify-content: center; gap: 8px; width: max-content; max-width: 100%; padding: 7px; margin: 26px auto 0; border: 1px solid #ffffff1f; border-radius: 17px; background: linear-gradient(#ffffff06, #00000020); box-shadow: inset 0 1px #ffffff0b, 0 6px 15px #0003; }
.tt-demo-dock button { position: relative; display: grid; place-items: center; gap: 5px; min-width: 70px; min-height: 64px; padding: 9px 10px; border: 1px solid #ffffff17; border-radius: 11px; background: linear-gradient(#ffffff0a,#ffffff03); color: #8e9dab; font-size: 10px; cursor: pointer; transition: transform .25s cubic-bezier(.22,1,.36,1), color .2s, background .2s, box-shadow .2s; }
.tt-demo-dock svg { width: 23px; height: 23px; fill: none; stroke: currentColor; stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.6; }
.tt-demo-dock [aria-pressed="true"] { color: #e0d7fd; border-color: #b5a2f25c; background: radial-gradient(ellipse at 50% 0, #b5a2f23b, transparent 80%), #b5a2f210; box-shadow: inset 0 1px #ffffff24, 0 0 14px #b5a2f212; }
.tt-demo-dock button:hover { color: #f1edfc; transform: translateY(-4px); background-color: #b5a2f217; }
.tt-showcase .tt-showcase-caption { display: flex; justify-content: center; gap: 8px; flex-wrap: wrap; margin: 28px auto 0; text-align: center; font-size: 13px; line-height: 1.8; color: var(--tt-muted); }
.tt-showcase-caption strong { color: #dce3ed; font-weight: 500; }
.tt-hero-demo.is-expanded { position: fixed; inset: 20px; width: auto; z-index: 200; display: flex; align-items: stretch; }
.tt-hero-demo.is-expanded .tt-app-window { width: 100%; display: flex; flex-direction: column; transform: none !important; box-shadow: 0 0 0 100vmax #000c; }
.tt-hero-demo.is-expanded .tt-demo-viewport { flex: 1; height: auto; }
body:has(.tt-hero-demo.is-expanded) { overflow: hidden; }

/* Concise guidance, compact controls, and quiet dividers. */
.tt-workflow { padding-top: 112px; scroll-margin-top: 105px; }
.tt-section-heading { text-align: center; margin-bottom: 32px; }
.tt-section-heading h2, .tt-faq > h2 { font-size: 32px; line-height: 1.4; font-weight: 600; letter-spacing: -.025em; }
.tt-section-heading p { margin-top: 10px; color: var(--tt-muted); font-size: 16px; }
.tt-workflow-tabs { display: flex; gap: 6px; justify-content: center; width: max-content; max-width: 100%; margin: 0 auto 28px; padding: 5px; border: 1px solid var(--tt-line); border-radius: 12px; background: #0a172170; }
.tt-workflow-tab { display: flex; align-items: center; gap: 9px; min-height: 38px; padding: 9px 18px; border: 1px solid transparent; border-radius: 8px; color: #97aab9; background: transparent; cursor: pointer; font-size: 13px; transition: background .2s, color .2s, border-color .2s; }
.tt-workflow-tab[aria-selected="true"] { color: #eee8fd; border-color: #ffffff20; background: linear-gradient(#ffffff12,#ffffff09); box-shadow: inset 0 1px #ffffff10; }
.tt-workflow-tab:hover { color: #efeafa; }
.tt-tab-number { font-size: 10px; font-variant-numeric: tabular-nums; color: var(--tt-accent); }
.tt-tab-text strong { font-size: 13px; font-weight: 500; white-space: nowrap; }
.tt-tab-text small, .tt-tab-arrow { display: none; }
.tt-workflow-panel { display: grid; grid-template-columns: minmax(0,.8fr) minmax(0,1.2fr); align-items: center; gap: 52px; padding: 44px; border: 1px solid var(--tt-line); border-radius: 18px; background: linear-gradient(120deg,#ffffff05,#ffffff02); }
.tt-workflow-panel[hidden] { display: none; }
.tt-kicker { color: var(--tt-accent); font-size: 11px; font-weight: 500; }
.tt-panel-copy h3 { margin-top: 16px; font-size: 25px; font-weight: 600; line-height: 1.4; letter-spacing: -.02em; text-wrap: balance; }
.tt-panel-copy p { margin-top: 16px; color: var(--tt-muted); font-size: 13px; line-height: 1.9; }
.tt-panel-copy ul { display: grid; gap: 10px; padding: 0; margin: 22px 0; list-style: none; }
.tt-panel-copy li { display: flex; gap: 9px; color: #c0cfdc; font-size: 12px; line-height: 1.8; }
.tt-panel-copy li > span { color: var(--tt-accent); }
.tt-text-link { display: inline-flex; align-items: center; gap: 9px; color: #c6b6f8; font-size: 12px; }
.tt-text-link:hover { color: #eee5ff; }
.tt-panel-image { overflow: hidden; min-width: 0; border: 1px solid #ffffff30; border-radius: 10px; background: #f7f7f8; box-shadow: 0 16px 36px #0003; }
.tt-panel-image img { width: 100%; height: auto; }
.tt-panel-image figcaption { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 10px 12px; color: #70707a; font-size: 9px; }
.tt-panel-image button { flex: none; border: 0; background: none; color: #645286; font-size: 10px; cursor: pointer; }
.tt-workflow .tt-workflow-note { margin-top: 20px; color: #8096a8; text-align: center; font-size: 11px; line-height: 1.8; }
.tt-faq { max-width: 780px; padding-top: 112px; }
.tt-faq > h2 { margin-bottom: 32px; text-align: center; }
.tt-faq details { border-bottom: 1px solid var(--tt-line); }
.tt-faq summary { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding: 22px 0; font-size: 15px; font-weight: 500; list-style: none; cursor: pointer; }
.tt-faq summary::-webkit-details-marker { display: none; }
.tt-faq summary span { flex: none; font-size: 21px; color: #8795a8; transition: transform .2s; }
.tt-faq details[open] summary span { transform: rotate(180deg); }
.tt-faq details p { padding: 0 36px 22px 0; color: var(--tt-muted); font-size: 13px; line-height: 1.9; }
.tt-bottom-cta { padding-block: 136px 112px; text-align: center; scroll-margin-top: 100px; }
.tt-bottom-cta > img { margin: 0 auto 24px; border-radius: 18px; box-shadow: 0 16px 44px #0004; }
.tt-bottom-cta h2 { font-size: clamp(36px,4vw,52px); font-weight: 600; line-height: 1.2; letter-spacing: -.035em; }
.tt-bottom-cta p { margin-top: 22px; color: var(--tt-muted); font-size: 15px; }
.tt-bottom-actions { display: flex; flex-direction: column; align-items: center; gap: 25px; margin-top: 32px; }
.tt-bottom-cta .tt-download-meta { font-size: 12px; }
.tt-pending-note { display: block; color: var(--tt-muted); font-size: 11px; margin-top: 18px; }
.tt-related { padding-bottom: 64px; }
.tt-related > div:first-child { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-bottom: 20px; }
.tt-related h2 { font-size: 18px; font-weight: 550; }
.tt-related-links { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 16px; }
.tt-related-links > a { display: flex; align-items: center; gap: 16px; padding: 20px; border: 1px solid var(--tt-line); border-radius: 12px; background: #ffffff03; transition: background .2s, border-color .2s; }
.tt-related-links > a:hover { background: #ffffff07; border-color: #b5a2f24d; }
.tt-related-links img { border-radius: 12px; }
.tt-related-links > a > span { display: grid; gap: 5px; }
.tt-related-links strong { font-size: 14px; font-weight: 550; }
.tt-related-links small { color: var(--tt-muted); font-size: 11px; }
.tt-related-links svg { margin-left: auto; color: var(--tt-muted); }
.tt-image-dialog { width: min(1400px,calc(100% - 40px)); max-height: calc(100dvh - 40px); padding: 16px; border: 1px solid #ffffff38; border-radius: 14px; background: #0c1822; color: #d8e7ee; }
.tt-image-dialog::backdrop { background: #000c; backdrop-filter: blur(8px); }
.tt-image-dialog form { display: flex; justify-content: flex-end; margin: 0 0 12px; }
.tt-image-dialog button { width: 32px; height: 32px; border: 1px solid #ffffff30; border-radius: 7px; background: #ffffff08; color: #fff; font-size: 22px; cursor: pointer; }
.tt-image-dialog img { width: 100%; height: auto; max-height: calc(100dvh - 150px); object-fit: contain; }
.tt-image-dialog p { margin-top: 12px; color: var(--tt-muted); font-size: 12px; text-align: center; }
.toutiao-product-page :is(a,button,summary):focus-visible { outline: 2px solid var(--tt-accent); outline-offset: 4px; }
.tt-reveal-pending { opacity: 0; transform: translateY(22px); }
.tt-reveal-ready { transition: opacity .7s cubic-bezier(.22,1,.36,1), transform .7s cubic-bezier(.22,1,.36,1); }

@media (max-width: 1100px) {
  .tt-container { width: calc(100% - 64px); }
  .tt-workflow-panel { gap: 28px; padding: 32px; }
}
@media (max-width: 900px) {
  .tt-demo-viewport { height: calc((100vw - 114px)*.647059); max-height: 550px; }
  .tt-demo-viewport iframe { width: 850px; height: 550px; transform: scale(var(--tt-demo-scale,1)); transform-origin: top left; }
  .tt-hero-demo.is-expanded .tt-demo-viewport iframe { transform: none; width: 100%; height: 100%; min-width: 0; }
  .tt-workflow-panel { grid-template-columns: minmax(0,1fr); }
}
@media (max-height: 680px) and (min-width: 901px) {
  .tt-hero { padding-block: 110px 72px; }
  .tt-hero h1 { font-size: 60px; }
  .tt-product-name { margin-bottom: 18px; }
  .tt-hero .tt-hero-tagline { margin-top: 20px; font-size: 16px; }
  .tt-hero-actions { margin-top: 32px; gap: 22px; }
}
@media (max-width: 600px) {
  .tt-container { width: calc(100% - 40px); }
  .tt-hero { min-height: 100svh; padding-block: 108px 92px; }
  .tt-hero h1 { font-size: clamp(32px,10vw,48px); }
  .tt-product-name { margin-bottom: 23px; }
  .tt-product-status { font-size: 10px; }
  .tt-hero .tt-hero-tagline { font-size: 13px; line-height: 1.85; margin-top: 24px; }
  .tt-hero-actions { margin-top: 34px; gap: 24px; }
  .tt-platform-downloads { gap: 10px; }
  .tt-download { min-height: 42px; padding: 11px 13px; font-size: 12px; }
  .tt-platform-note { gap: 7px; margin-top: 14px; font-size: 8px; }
  .tt-platform-note span { padding-left: 7px; }
  .tt-showcase { padding-top: 20px; }
  .tt-showcase-heading { margin-bottom: 28px; }
  .tt-showcase-heading h2 { font-size: 19px; }
  .tt-showcase-heading p { font-size: 16px; }
  .tt-demo-stage { padding: 10px 10px 16px; border-radius: 15px; box-shadow: inset 0 1px #ffffff16,0 0 0 4px #ffffff02,0 15px 40px #0005; }
  .tt-app-window { border-radius: 8px; }
  .tt-window-bar { height: 30px; padding: 0 8px; gap: 8px; font-size: 8px; }
  .tt-window-dots { gap: 4px; }
  .tt-window-dots i { width: 6px; height: 6px; }
  .tt-live-label { font-size: 7px; }
  .tt-window-bar > button { width: 24px; height: 24px; }
  .tt-demo-viewport { height: calc((100vw - 64px)*.647059); }
  .tt-demo-footer { padding: 6px 8px; font-size: 7px; }
  .tt-demo-footer > span:last-child { display: none; }
  .tt-demo-dock { gap: 5px; padding: 5px; margin-top: 16px; border-radius: 12px; }
  .tt-demo-dock button { min-width: 0; width: 53px; min-height: 52px; padding: 7px 5px; gap: 4px; border-radius: 8px; font-size: 8px; }
  .tt-demo-dock svg { width: 19px; height: 19px; }
  .tt-showcase .tt-showcase-caption { gap: 3px 8px; margin-top: 20px; font-size: 11px; }
  .tt-hero-demo.is-expanded { inset: 10px; }
  .tt-workflow, .tt-faq { padding-top: 76px; }
  .tt-section-heading h2, .tt-faq > h2 { font-size: 27px; }
  .tt-section-heading p { font-size: 14px; }
  .tt-workflow-tabs { gap: 3px; padding: 4px; border-radius: 10px; }
  .tt-workflow-tab { padding: 9px 8px; gap: 5px; }
  .tt-tab-number { font-size: 8px; }
  .tt-tab-text strong { font-size: 10px; }
  .tt-workflow-panel { padding: 24px 18px; border-radius: 14px; gap: 24px; }
  .tt-panel-copy h3 { font-size: 22px; }
  .tt-panel-copy p { font-size: 12px; }
  .tt-panel-copy li { font-size: 11px; }
  .tt-panel-image figcaption { align-items: flex-start; font-size: 8px; line-height: 1.7; }
  .tt-panel-image button { font-size: 9px; }
  .tt-workflow .tt-workflow-note { text-align: left; font-size: 10px; }
  .tt-faq summary { font-size: 14px; padding-block: 20px; }
  .tt-faq details p { font-size: 12px; padding-right: 16px; }
  .tt-bottom-cta { padding-block: 90px 72px; }
  .tt-bottom-cta > img { width: 60px; height: 60px; border-radius: 16px; }
  .tt-bottom-cta h2 { font-size: clamp(30px,9vw,42px); }
  .tt-bottom-cta p { font-size: 13px; }
  .tt-related > div:first-child { gap: 12px; }
  .tt-related h2 { font-size: 16px; }
  .tt-related-links { grid-template-columns: minmax(0,1fr); gap: 12px; }
}
@media (prefers-reduced-motion: reduce) {
  .tt-main *, .tt-image-dialog { animation: none !important; transition: none !important; }
  .tt-reveal-pending { opacity: 1; transform: none; }
}
.tt-hero h1.tt-generic-title { display:block; white-space:normal; text-wrap:balance; font-size:clamp(36px,5vw,68px); }
.tt-panel-text-only { grid-template-columns:1fr; }
.tt-panel-text-only .tt-panel-copy { max-width:760px; margin:auto; }
.tt-workflow-tabs { flex-wrap:wrap; width:fit-content; }
.tt-tab-text strong { white-space:normal; overflow-wrap:anywhere; }
.tt-gallery .tt-panel-image { margin:0; }
.tt-gallery .tt-panel-image img { width:100%; max-height:600px; object-fit:contain; }
.tt-gallery-tabs { display:flex; justify-content:center; flex-wrap:wrap; gap:8px; padding-top:20px; }
.tt-gallery-tabs button { border:1px solid #ffffff20; background:#ffffff08; color:#c5c0df; border-radius:8px; padding:10px 16px; cursor:pointer; }
.tt-gallery-tabs button[aria-pressed="true"] { background:#8062e8; color:white; }