:root {
  color-scheme: light;
  --paper: #faf9f6;
  --ink: #30332f;
  --muted: #62645d;
  --line: #d9d8d0;
  --soft: #efeee8;
  --link: #3f5847;
  font: 18px/1.8 "PingFang TC", "Microsoft JhengHei", sans-serif;
  color: var(--ink);
  background: var(--paper);
  caret-color: var(--ink);
  scrollbar-color: #aaa99f var(--paper);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 28px; }
body { margin: 0; padding-block: env(safe-area-inset-top) env(safe-area-inset-bottom); }
::selection { color: var(--ink); background: #dce3d8; }
a { color: var(--link); text-underline-offset: .3em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible, summary:focus-visible { outline: 2px solid var(--link); outline-offset: 5px; }
p, li, a, dd, dt { overflow-wrap: anywhere; }
p { margin-block: 0 1.2em; }
h1, h2, h3 { overflow-wrap: anywhere; font-weight: 500; text-wrap: balance; }
h1 { font-size: 2rem; line-height: 1.4; }
h2 { margin-block: 2.6rem 1rem; font-size: 1.35rem; line-height: 1.5; }
h3 { font-size: 1.05rem; line-height: 1.6; }
main, header, footer {
  max-width: 820px;
  margin-inline: auto;
  padding: 28px max(24px, env(safe-area-inset-right)) 28px max(24px, env(safe-area-inset-left));
}
header { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; border-bottom: 1px solid var(--line); }
nav { display: flex; gap: 26px; flex-wrap: wrap; }
nav a { text-decoration: none; }
nav a:hover, nav a[aria-current="page"] { text-decoration: underline; }
.brand { display: inline-flex; align-items: center; gap: 12px; color: var(--ink); text-decoration: none; font-size: 1.4rem; font-weight: 600; letter-spacing: -.02em; }
.brand img { display: block; border-radius: 8px; }
nav a, .brand, .actions a, .version-list a { min-height: 44px; display: inline-flex; align-items: center; }
summary { min-height: 44px; cursor: pointer; font-weight: 500; }
summary:hover { color: var(--link); }
details { padding-block: 18px; border-bottom: 1px solid var(--line); }
details[open] summary { margin-bottom: 12px; }
details p:last-child { margin-bottom: 0; }
.lead { font-size: 1.15rem; }
small, .date, .fine-print, figcaption { color: var(--muted); }
.fine-print { font-size: .8rem; line-height: 1.8; }
hr { border: 0; border-top: 1px solid var(--line); margin-block: 48px; }
footer { border-top: 1px solid var(--line); margin-top: 24px; }
.wrap { max-width: 1264px; margin-inline: auto; padding-inline: max(32px, env(safe-area-inset-left)) max(32px, env(safe-area-inset-right)); }
.landing main { max-width: none; padding: 0; }
.site-header { padding-block: 28px; }
.site-header nav { font-size: .85rem; gap: 32px; }
.hero { padding-block: 32px 0; }
.hero-intro { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 80px; }
.hero h1 { font-size: clamp(2.2rem, 3.3vw, 2.65rem); line-height: 1.42; font-weight: 400; letter-spacing: .01em; margin: 0; }
.hero h1 span { display: inline-block; }
.hero-description { padding-top: 10px; }
.hero-description .lead { margin-bottom: 20px; }
.hero-description .lead strong { display: block; }
.hero-description p { font-size: .95rem; }
.hero-description .lead { font-size: 1.15rem; }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 28px; margin-block: 30px 12px; font-size: .85rem; }
.button { padding: 10px 24px; color: var(--paper); background: var(--ink); text-decoration: none; text-align: center; justify-content: center; }
.button:hover { background: #454940; }
.button.secondary { color: var(--ink); border: 1px solid var(--ink); background: transparent; }
.button.secondary:hover { background: var(--soft); }
.hero-note { font-size: .75rem; color: var(--muted); margin-block: 0 26px; }
.hero .actions { margin-top: 22px; }
figure { margin: 0; }
.device-scene img { display: block; width: 100%; height: auto; background: var(--soft); }
figcaption { font-size: .75rem; line-height: 1.7; margin-top: 12px; }
.device-scene figcaption { text-align: right; }
.platform-list { display: flex; flex-wrap: wrap; gap: 12px 36px; padding: 0; margin: 18px 0 0; list-style: none; font-size: .85rem; color: var(--muted); }
.landing h2 { font-size: clamp(1.7rem, 2.4vw, 2.15rem); font-weight: 400; line-height: 1.5; letter-spacing: .01em; margin: 0; }
.section-intro { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 80px; align-items: start; margin-bottom: 40px; }
.section-intro > p { max-width: 28em; margin: 6px 0 0; font-size: .95rem; }
.writing { padding-block: 80px; }
.app-spread { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; background: var(--soft); padding: 32px; }
.app-spread img { display: block; width: 100%; height: auto; }
.app-spread figcaption { text-align: center; }
.workflow { padding-block: 68px; border-top: 1px solid var(--line); }
.steps { list-style: none; padding: 0; margin-block: 0 22px; counter-reset: steps; }
.steps li { counter-increment: steps; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 80px; border-top: 1px solid var(--line); padding-block: 24px; }
.steps h3 { margin: 0; }
.steps h3::before { content: counter(steps) ". "; color: var(--muted); font-variant-numeric: tabular-nums; }
.steps p { margin: 0; font-size: .95rem; }
.cloud { padding-block: 64px 30px; background: var(--soft); }
.cloud-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 80px; margin-bottom: 36px; }
.cloud-layout h2 { margin-bottom: 26px; }
.cloud-layout p { font-size: .95rem; max-width: 28em; }
.cloud-layout a { min-height: 44px; display: inline-flex; align-items: center; font-size: .85rem; }
.cloud-copy h3 { margin: 0 0 12px; }
.cloud-copy h3:not(:first-child) { margin-top: 32px; }
.cloud > .fine-print { margin-bottom: 0; }
.pricing { padding-block: 76px; }
.price-list { border-block: 1px solid var(--line); margin-block: 0 26px; font-variant-numeric: tabular-nums; }
.price-list > div { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1.6fr); gap: 32px; align-items: center; padding-block: 26px; }
.price-list > div + div { border-top: 1px solid var(--line); }
.price-list dt { font-weight: 500; }
.price-list dd { margin: 0; font-size: .9rem; }
.price-list .amount { font-size: 1.7rem; line-height: 1.5; }
.amount span { display: block; font-size: .75rem; margin-top: 4px; color: var(--muted); }
.pricing > p { max-width: 65ch; font-size: .9rem; }
.pricing > .fine-print { font-size: .8rem; max-width: 80ch; }
.versions { border-top: 1px solid var(--line); padding-block: 70px; }
.version-list { margin: 0 0 24px; }
.version-list > div { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr); gap: 40px; border-top: 1px solid var(--line); padding-block: 22px; }
.version-list dt { font-weight: 500; }
.version-list dd { margin: 0; font-size: .9rem; }
.version-list strong { font-weight: 500; }
.version-list dd span { display: block; font-size: .8rem; color: var(--muted); margin-top: 6px; }
.version-list a { margin-top: 6px; font-size: .8rem; }
.help { padding-block: 60px; border-top: 1px solid var(--line); }
.help > p { margin-top: 20px; font-size: .95rem; }
.site-footer { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 24px; margin-top: 0; padding-block: 28px; }
.site-footer .brand { font-size: 1.1rem; font-weight: 500; }
.site-footer nav, .site-footer small { font-size: .75rem; }
.skip { position: absolute; top: 8px; left: 8px; padding: 12px 20px; background: var(--paper); transform: translateY(-200%); z-index: 2; }
.skip:focus { transform: none; }
@media (max-width: 850px) {
  .hero-intro, .section-intro, .steps li, .cloud-layout { gap: 40px; }
  .writing-layout { grid-template-columns: minmax(0, 1fr); gap: 32px; }
  .writing-copy { display: grid; grid-template-columns: minmax(0, 1fr); }
  .app-spread { max-width: 640px; }
  .site-header nav { gap: 22px; }
  .hero-description br { display: none; }
}
@media (max-width: 600px) {
  .wrap { padding-inline: max(24px, env(safe-area-inset-left)) max(24px, env(safe-area-inset-right)); }
  .site-header { padding-block: 18px; gap: 12px; }
  .site-header nav { width: 100%; gap: 12px 22px; font-size: .8rem; }
  .brand { font-size: 1.25rem; }
  .hero { padding-top: 30px; }
  .hero-intro, .section-intro, .steps li, .cloud-layout { grid-template-columns: minmax(0, 1fr); gap: 22px; }
  .hero h1 { font-size: 2.25rem; }
  .hero-description { padding-top: 0; grid-row: 2; }
  .hero-description .lead { font-size: 1.05rem; margin-bottom: 10px; }
  .hero-description p { margin-bottom: 24px; font-size: .85rem; }
  .hero-description br { display: none; }
  .hero-intro { gap: 0; }
  .hero-note { margin-bottom: 20px; }
  .actions { gap: 16px 24px; margin-top: 22px; }
  .device-scene figcaption { font-size: .75rem; text-align: left; }
  .platform-list { gap: 8px 24px; margin-top: 14px; font-size: .8rem; }
  .writing, .workflow, .pricing, .versions { padding-block: 48px; }
  .section-intro { margin-bottom: 28px; }
  .section-intro > p { font-size: .9rem; margin: 0; }
  .landing h2 { font-size: 1.7rem; }
  .app-spread { gap: 14px; padding: 18px; }
  .app-spread figcaption { font-size: .75rem; text-align: left; }
  .steps li { gap: 10px; padding-block: 20px; }
  .steps p { font-size: .9rem; }
  .cloud { padding-block: 48px 28px; }
  .cloud-layout { margin-bottom: 26px; gap: 30px; }
  .price-list > div { grid-template-columns: minmax(0, 1fr); gap: 12px; align-items: start; }
  .price-list > div > dd:last-child { grid-column: 1 / -1; }
  .price-list .amount { font-size: 1.45rem; }
  .version-list > div { grid-template-columns: minmax(0, 1fr); gap: 8px; }
  .help { padding-block: 44px; }
  .site-footer { gap: 14px; }
  .site-footer .brand { width: 100%; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

/* Motion is confined to the illustrated workflow; navigation and reading stay still. */
button, select { font: inherit; color: inherit; }
button:focus-visible, select:focus-visible { outline: 2px solid var(--link); outline-offset: 4px; }
[hidden] { display: none !important; }
.language-control { display: flex; align-items: center; gap: 8px; font-size: .75rem; }
.language-control select { min-height: 44px; max-width: 100%; background: transparent; border: 1px solid var(--line); padding: 6px 10px; border-radius: 0; }
.language-error:empty { display: none; }
.language-error { font-size: .8rem; }
.hero h1 span { display: block; }
.hero-description .lead { font-size: 1.2rem; font-weight: 500; }
.platform-list { margin-block: 8px 24px; gap: 20px 36px; color: var(--ink); align-items: center; }
.platform-list li { display: flex; align-items: center; gap: 10px; }
.platform-list svg { width: 32px; height: 32px; stroke: currentColor; stroke-width: 1.5; fill: none; }
.showcase { margin-top: 24px; background: var(--soft); padding: 28px 32px 16px; }
.scene-toolbar { display: flex; justify-content: space-between; align-items: start; gap: 18px; border-bottom: 1px solid #cecec5; margin-bottom: 24px; }
.scene-toolbar [role=tablist] { display: flex; flex-wrap: wrap; gap: 0 24px; }
.scene-toolbar button { cursor: pointer; font-size: .8rem; min-height: 44px; background: none; border: 0; padding: 8px 0; }
.scene-toolbar [role=tab] { border-bottom: 2px solid transparent; }
.scene-toolbar [aria-selected=true] { border-bottom-color: var(--ink); font-weight: 600; }
.scene-toolbar .motion-toggle { font-size: .72rem; flex-shrink: 0; text-decoration: underline; text-underline-offset: 4px; }
.device-grid { display: grid; grid-template-columns: 1.25fr 1.25fr .85fr .85fr; gap: 22px; align-items: end; }
.demo-device figcaption { font-size: .8rem; color: var(--ink); margin: 0 0 8px; }
.device-window { border: 2px solid #41463e; background: #fffefa; padding: 5px; }
.demo-device.mobile .device-window { border-radius: 12px; padding: 8px; }
.device-foot { height: 8px; background: #41463e; margin-inline: -5px; }
.mobile .device-foot { height: 0; }
.demo-chrome { display: flex; flex-wrap: wrap; gap: 5px; align-items: center; border-bottom: 1px solid var(--line); font-size: .62rem; padding: 4px 5px; }
.demo-chrome img { display: block; }
.sample-page { position: relative; padding: 16px 10px 12px; font-size: .65rem; line-height: 1.7; background: #fffefa; min-height: 224px; }
.sample-page small { font-size: .62rem; color: var(--muted); }
.sample-page .article-title { font-size: .85rem; line-height: 1.5; margin: 12px 0; font-weight: 600; }
.sample-page p { margin-bottom: 12px; }
.sample-page .highlight { background: #f3e6a0; }
.sample-page .recall { border-bottom: 2px solid #7493a2; padding-bottom: 5px; }
.sample-page .hand-note { color: #a04b42; margin-bottom: 0; font-style: italic; }
.ink-line { width: 90%; height: 32px; overflow: visible; stroke: #a04b42; stroke-width: 1.5; fill: none; }
.scene-outcome { text-align: center; font-size: .85rem; margin: 20px 0 0; }
.scene-detail { font-size: .9rem; max-width: 60ch; margin: 22px auto 18px; }
.motion-caption { margin: 0; text-align: center; }
.import-demo { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; gap: 20px; align-items: center; max-width: 840px; margin: auto; }
.import-demo p, .cloud-demo .scene-label, .cloud-symbol p { font-size: .8rem; }
.source-file small { font-size: .8rem; }
.file-sheet { padding: 32px 20px; margin: 12px 0; border: 1px solid #b5b9ad; background: var(--paper); }
.file-sheet b { font-size: 2rem; font-weight: 400; }
.import-preview { border: 1px solid #b5b9ad; background: #fffefa; }
.import-choice .scene-label { font-size: .95rem; }
.import-choice p { padding-block: 12px; border-bottom: 1px solid #b5b9ad; }
.flow-arrow { font-size: 1.4rem; color: var(--link); }
.cloud-demo { display: grid; grid-template-columns: 1fr .8fr 1fr; align-items: center; gap: 40px; max-width: 780px; margin: auto; }
.cloud-demo .scene-label { margin: 0 0 12px; }
.cloud-page .sample-page { border: 1px solid #b5b9ad; }
.cloud-symbol { text-align: center; font-size: .9rem; }
.cloud-symbol svg { width: 100%; height: auto; stroke: var(--link); fill: none; stroke-width: 2; }
.cloud-symbol strong { display: block; }
.cloud-link { stroke-dasharray: 8 6; }
.writing .app-spread { max-width: 650px; margin-inline: auto; }
.writing > .fine-print { text-align: center; margin-top: 12px; }
.feature-gallery { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px 24px; }
.feature-gallery a { display: block; }
.feature-gallery img { display: block; width: 100%; height: auto; background: var(--soft); }
.feature-gallery figcaption { color: var(--ink); font-size: .9rem; }
@media (max-width: 600px) {
  .feature-gallery { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .writing > .fine-print { text-align: left; }
}
.catalogue { padding-block: 0 32px; }
.trademark { width: 100%; font-size: .65rem; color: var(--muted); line-height: 1.7; margin: 0; max-width: 100ch; }
.ios-download { width: fit-content; }
.store-badge { height: 44px; width: auto; display: block; }
.showcase:is([data-motion=running], [data-motion=paused]) .ink-line path { animation: draw-ink 9s ease-in-out infinite; }
.showcase:is([data-motion=running], [data-motion=paused]) .device-grid .demo-device:nth-child(2) .ink-line path { animation-delay: .65s; }
.showcase:is([data-motion=running], [data-motion=paused]) .device-grid .demo-device:nth-child(3) .ink-line path { animation-delay: 1.3s; }
.showcase:is([data-motion=running], [data-motion=paused]) .device-grid .demo-device:nth-child(4) .ink-line path { animation-delay: 1.95s; }
.showcase:is([data-motion=running], [data-motion=paused]) .flow-arrow { animation: file-flow 5s ease-in-out infinite; }
.showcase:is([data-motion=running], [data-motion=paused]) .cloud-link { animation: cloud-flow 4s linear infinite; }
.showcase[data-motion=paused] * { animation-play-state: paused !important; }
@keyframes draw-ink { 0%, 10% { stroke-dasharray: 240; stroke-dashoffset: 240; } 35%, 90% { stroke-dasharray: 240; stroke-dashoffset: 0; } 100% { stroke-dasharray: 240; stroke-dashoffset: 240; } }
@keyframes file-flow { 0%, 100% { transform: translateX(-4px); opacity: .5; } 50% { transform: translateX(4px); opacity: 1; } }
@keyframes cloud-flow { to { stroke-dashoffset: -28; } }
@media (max-width: 1000px) {
  .device-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .device-grid .mobile { max-width: 220px; width: 100%; justify-self: center; }
  .scene-toolbar { flex-wrap: wrap; gap: 0; }
  .site-header { gap: 8px 24px; }
}
@media (max-width: 600px) {
  .hero h1 { font-size: 2.3rem; }
  .hero-description .lead { font-size: 1.05rem; }
  .platform-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-block: 16px 24px; }
  .showcase { margin-inline: -12px; padding: 16px 12px; }
  .scene-toolbar [role=tablist] { gap: 0 18px; }
  .scene-toolbar button { font-size: .75rem; }
  .device-grid { gap: 18px 10px; }
  .sample-page { padding: 12px 7px; min-height: 218px; font-size: .65rem; }
  .sample-page .article-title { font-size: .78rem; }
  .demo-chrome { font-size: .62rem; }
  .scene-detail { font-size: .85rem; }
  .motion-caption { text-align: left; }
  .import-demo { grid-template-columns: 1fr 1fr; gap: 20px; }
  .import-demo .flow-arrow { display: none; }
  .import-choice { grid-column: 1 / -1; }
  .import-choice .scene-label { margin-top: 0; }
  .import-choice p { display: inline-block; margin: 0 16px 0 0; }
  .cloud-demo { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
  .cloud-symbol { grid-column: 1 / -1; grid-row: 1; display: flex; align-items: center; flex-wrap: wrap; justify-content: center; gap: 12px; }
  .cloud-symbol svg { width: 60px; }
  .cloud-symbol p { margin: 0; }
  .trademark { font-size: .7rem; }
}
@media (prefers-reduced-motion: reduce) { .showcase * { animation: none !important; } }

@media (max-width: 600px) {
  .site-header { display: grid; grid-template-columns: minmax(0, 1fr) auto; padding-block: 18px; }
  .site-header .brand { grid-column: 1; grid-row: 1; }
  .site-header .language-control { grid-column: 2; grid-row: 1; }
  .site-header nav { grid-column: 1 / -1; grid-row: 2; }
  .site-header .language-control > span { display: none; }
}

.store-link { padding: 11px; margin-inline-start: -11px; }
.hero .actions { margin-block: 11px 0; }
.sample-page .highlight { background: linear-gradient(#f3e6a0, #f3e6a0) left center / 100% 100% no-repeat; }
.showcase:is([data-motion=running], [data-motion=paused]) .highlight { animation: mark-page 9s ease-in-out infinite; }
.showcase:is([data-motion=running], [data-motion=paused]) .demo-device:nth-child(2) .highlight { animation-delay: .65s; }
.showcase:is([data-motion=running], [data-motion=paused]) .demo-device:nth-child(3) .highlight { animation-delay: 1.3s; }
.showcase:is([data-motion=running], [data-motion=paused]) .demo-device:nth-child(4) .highlight { animation-delay: 1.95s; }
@keyframes mark-page { 0%, 10%, 100% { background-size: 0% 100%; } 35%, 90% { background-size: 100% 100%; } }