/* Hello World introduction. Scoped to this page; artwork is for the website. */
html { scroll-behavior: smooth; }
.hw-page {
  --hw-bg: #060d18;
  --hw-surface: #0c1727;
  --hw-text: #f0f5fb;
  --hw-muted: #acbed2;
  --hw-cyan: #61d8ef;
  --hw-line: #26394e;
  margin: 0;
  background: var(--hw-bg);
  color: var(--hw-text);
  color-scheme: dark;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans", "PingFang SC", sans-serif;
  font-size: 16px;
  line-height: 1.8;
  overflow-wrap: break-word;
  -webkit-font-smoothing: antialiased;
}
.hw-page *, .hw-page *::before, .hw-page *::after { box-sizing: border-box; }
.hw-page a { color: var(--hw-cyan); text-underline-offset: .24em; }
.hw-page a:hover { color: #c6f5ff; }
.hw-page :is(a, summary):focus-visible { outline: 3px solid var(--hw-cyan); outline-offset: 5px; }
.hw-page img { max-width: 100%; }
.hw-page :is(p, h1, h2, h3) { margin-block-start: 0; }
.hw-page figure { margin: 0; }
.hw-wrap { width: min(1160px, calc(100% - 64px)); margin-inline: auto; }
.hw-skip {
  position: absolute;
  inset-block-start: 12px;
  inset-inline-start: 18px;
  padding: 10px 20px;
  border-radius: 8px;
  background: var(--hw-bg);
  transform: translateY(-180%);
  z-index: 5;
}
.hw-skip:focus { transform: none; }
.hw-hero {
  position: relative;
  overflow: hidden;
  padding-block: 24px 84px;
  border-block-end: 1px solid var(--hw-line);
  background: radial-gradient(ellipse at 82% 54%, #174b6566, transparent 58%), var(--hw-bg);
}
.hw-nav { display: flex; justify-content: space-between; align-items: center; gap: 28px; margin-block-end: 60px; }
.hw-back { flex-shrink: 0; color: var(--hw-muted) !important; font-size: .86rem; text-decoration: none; }
.hw-back:hover { color: var(--hw-text) !important; }
.hw-back span { display: inline-block; margin-inline-end: 9px; }
.hw-languages { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 4px; }
.hw-languages a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 11px;
  border-radius: 7px;
  color: var(--hw-muted);
  font-size: .8rem;
  text-decoration: none;
}
.hw-languages a:hover { background: #152e41; color: #fff; }
.hw-languages a[aria-current="page"] { background: var(--hw-cyan); color: #062631; font-weight: 700; }
.hw-hero-grid { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(0, .8fr); gap: 76px; align-items: center; }
.hw-hero-grid > * { min-width: 0; }
.hw-brand { display: flex; align-items: center; gap: 18px; }
.hw-brand img { flex: 0 0 auto; width: 76px; height: 76px; border: 1px solid #305269; border-radius: 20px; }
.hw-brand h1 { margin: 0; font-size: clamp(1.7rem, 3vw, 2.3rem); line-height: 1.2; font-weight: 600; letter-spacing: -.035em; }
.hw-eyebrow { margin-block-end: 12px; color: var(--hw-cyan); font-size: .72rem; font-weight: 650; letter-spacing: .12em; }
.hw-brand .hw-eyebrow { margin-block-end: 6px; color: var(--hw-muted); font-size: .64rem; }
.hw-headline { margin-block: 36px 24px; font-size: clamp(2.5rem, 5.1vw, 4.4rem); line-height: 1.25; font-weight: 600; letter-spacing: -.045em; text-wrap: balance; }
.hw-lead { max-width: 590px; margin-block-end: 26px; color: var(--hw-muted); font-size: 1.05rem; }
.hw-pills { display: flex; flex-wrap: wrap; gap: 9px; padding: 0; margin-block: 0 28px; list-style: none; }
.hw-pills li { padding: 5px 12px; border: 1px solid #34516a; border-radius: 999px; color: #cad9e8; font-size: .76rem; }
.hw-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 18px; }
.hw-primary {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  max-width: 100%;
  padding: 13px 22px;
  border: 1px solid transparent;
  border-radius: 9px;
  background: var(--hw-cyan);
  color: #062631 !important;
  font-size: .92rem;
  font-weight: 700;
  text-align: center;
  text-decoration: none;
}
.hw-primary:hover { background: #a5edfb; }
.hw-primary small { font-size: .72rem; font-weight: 500; }
.hw-release { display: inline-block; padding-block: 9px; color: #bfd2e5; font-size: .86rem; }
.hw-release small { display: block; margin-block-start: 4px; color: var(--hw-muted); font-size: .74rem; }
.hw-section-links { display: flex; flex-wrap: wrap; gap: 10px 22px; margin-block-start: 26px; font-size: .8rem; }
.hw-section-links a { min-height: 32px; }
.hw-phone { position: relative; justify-self: center; width: min(100%, 290px); }
.hw-phone::before {
  content: "";
  position: absolute;
  inset: 16% -28% auto;
  aspect-ratio: 1;
  border: 1px solid #61d8ef29;
  border-radius: 50%;
  box-shadow: 0 0 0 38px #61d8ef06, 0 0 0 76px #61d8ef04;
  pointer-events: none;
}
.hw-phone img { position: relative; display: block; width: 100%; height: auto; border: 3px solid #3e5268; border-radius: 36px; background: var(--hw-bg); box-shadow: 0 28px 70px #0007; }
.hw-phone figcaption { position: relative; margin-block-start: 18px; color: var(--hw-muted); font-size: .73rem; text-align: center; }
.hw-main { padding-block: 78px 38px; }
.hw-section { margin-block-end: 88px; scroll-margin-block-start: 28px; }
.hw-section h2 { margin-block-end: 18px; font-size: clamp(1.85rem, 3.3vw, 2.75rem); line-height: 1.35; font-weight: 600; letter-spacing: -.035em; text-wrap: balance; }
.hw-muted { color: var(--hw-muted); font-size: .94rem; }
.hw-stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; padding: 30px 0; margin-block: 32px; border-block: 1px solid var(--hw-line); list-style: none; }
.hw-stats li { min-width: 0; }
.hw-stats strong { display: block; color: var(--hw-cyan); font-size: clamp(2rem, 4vw, 3.2rem); line-height: 1.2; font-weight: 500; letter-spacing: -.04em; }
.hw-stats span { display: block; margin-block-start: 10px; color: var(--hw-muted); font-size: .83rem; }
.hw-features { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; padding: 0; margin-block: 32px 0; list-style: none; }
.hw-features li { padding: 28px; border-block-start: 1px solid #4c889d; border-radius: 0 0 14px 14px; background: var(--hw-surface); }
.hw-number { display: block; margin-block-end: 18px; color: var(--hw-cyan); font-size: .74rem; letter-spacing: .1em; font-variant-numeric: tabular-nums; }
.hw-features h3 { margin-block-end: 12px; font-size: 1.16rem; line-height: 1.5; font-weight: 600; }
.hw-features p { margin: 0; color: var(--hw-muted); font-size: .91rem; }
.hw-phrases { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; padding: 0; margin-block: 30px 0; list-style: none; }
.hw-phrases li { min-width: 0; padding: 24px; border: 1px solid var(--hw-line); border-radius: 14px; background: linear-gradient(140deg, #102b3a80, transparent), var(--hw-surface); }
.hw-phrases li > span:first-child { display: block; margin-block-end: 10px; color: var(--hw-muted); font-size: .76rem; }
.hw-phrase { display: block; margin-block: 8px; color: #e8f8fd; font-size: clamp(1.5rem, 2.5vw, 1.9rem); line-height: 1.4; font-weight: 500; }
.hw-romanization { display: block; margin: 0; color: var(--hw-cyan); font-size: .86rem; }
.hw-language-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0 28px; padding: 0; margin-block: 28px 0; list-style: none; }
.hw-language-list li { display: flex; align-items: baseline; justify-content: space-between; flex-wrap: wrap; gap: 4px 12px; min-width: 0; padding-block: 14px; border-block-end: 1px solid var(--hw-line); font-size: .9rem; }
.hw-language-list span { color: #d9e6f3; }
.hw-language-list bdi { color: var(--hw-muted); font-size: .86rem; }
.hw-gallery { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); width: min(100%, 680px); gap: 64px; margin-block-start: 32px; margin-inline: auto; }
.hw-gallery figure { width: min(100%, 300px); min-width: 0; justify-self: center; }
.hw-gallery a { display: block; border-radius: 25px; }
.hw-gallery img { display: block; width: 100%; height: auto; border: 1px solid #36516a; border-radius: 25px; background: var(--hw-bg); }
.hw-gallery figcaption { padding-block-start: 16px; color: var(--hw-muted); font-size: .83rem; }
.hw-gallery figcaption span { display: block; margin-block-end: 4px; color: var(--hw-cyan); font-size: .73rem; }
.hw-steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 30px; padding: 0; margin-block: 32px 0; list-style: none; }
.hw-steps li { min-width: 0; padding-block-start: 24px; border-block-start: 1px solid var(--hw-line); }
.hw-steps .hw-number { width: 38px; height: 38px; display: grid; place-items: center; margin-block-end: 20px; border: 1px solid #3b738a; border-radius: 50%; background: #102c3b; letter-spacing: 0; }
.hw-steps h3 { margin-block-end: 10px; font-size: 1.12rem; line-height: 1.5; }
.hw-steps p { margin: 0; color: var(--hw-muted); font-size: .91rem; }
.hw-contact { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 36px; padding-block: 12px 34px; margin-block-end: 34px; border-block-end: 1px solid var(--hw-line); }
.hw-contact p { max-width: 700px; margin: 0; color: var(--hw-muted); }
.hw-contact > a { justify-self: start; }
.hw-contact small { display: block; margin-block-start: 8px; color: var(--hw-muted); font-size: .77rem; }
.hw-section .hw-faq-title { margin-block: 38px 4px; font-size: 1.2rem; letter-spacing: 0; }
.hw-page details { border-block-end: 1px solid var(--hw-line); }
.hw-page summary { padding-block: 21px; padding-inline-end: 10px; font-size: 1rem; cursor: pointer; }
.hw-page summary::marker { color: var(--hw-cyan); }
.hw-page details[open] summary { color: var(--hw-cyan); }
.hw-answer { max-width: 930px; padding-block: 0 24px; color: var(--hw-muted); font-size: .92rem; }
.hw-answer p:last-child { margin-block-end: 0; }
.hw-privacy { padding: 40px; border: 1px solid var(--hw-line); border-radius: 18px; background: var(--hw-surface); }
.hw-privacy h2 { font-size: 1.8rem; }
.hw-privacy h3 { margin-block: 28px 8px; font-size: 1rem; }
.hw-privacy :is(p, li) { max-width: 960px; color: var(--hw-muted); font-size: .9rem; }
.hw-privacy ul { padding-inline-start: 22px; }
.hw-updated { margin-block: 24px 0; color: var(--hw-muted); font-size: .78rem; }
.hw-source-links { display: flex; flex-wrap: wrap; gap: 10px 22px; margin-block-start: 24px; font-size: .8rem; }
.hw-footer { padding-block: 28px; border-block-start: 1px solid var(--hw-line); font-size: .83rem; }
.hw-footer .hw-wrap { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px 28px; }
.hw-footer p { margin: 0; color: var(--hw-muted); }
.hw-footer a { display: inline-flex; align-items: center; min-height: 44px; }
html[dir="rtl"] .hw-page { font-family: -apple-system, BlinkMacSystemFont, "Geeza Pro", Arial, sans-serif; }
html[dir="rtl"] .hw-back span { transform: scaleX(-1); }
html[dir="rtl"] .hw-page :is(h1, h2, .hw-headline, .hw-eyebrow, .hw-stats strong) { letter-spacing: 0; }
html[dir="rtl"] .hw-hero { background: radial-gradient(ellipse at 18% 54%, #174b6566, transparent 58%), var(--hw-bg); }
html[lang="zh-Hant"] .hw-page { font-family: -apple-system, BlinkMacSystemFont, "PingFang TC", sans-serif; }
@media (max-width: 1000px) {
  .hw-nav { flex-direction: column; align-items: flex-start; gap: 16px; margin-block-end: 42px; }
  .hw-languages { justify-content: flex-start; }
  .hw-hero-grid { grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr); gap: 40px; }
  .hw-headline { font-size: clamp(2.5rem, 5vw, 3.4rem); }
  .hw-features, .hw-steps { gap: 18px; }
  .hw-features li { padding: 22px; }
  .hw-phrases li { padding: 20px; }
  .hw-contact { grid-template-columns: 1fr; gap: 22px; }
}
@media (max-width: 680px) {
  .hw-wrap { width: calc(100% - 40px); }
  .hw-hero { padding-block: 20px 52px; }
  .hw-nav { margin-block-end: 32px; }
  .hw-languages a { padding: 8px 10px; font-size: .76rem; }
  .hw-hero-grid { grid-template-columns: 1fr; gap: 42px; }
  .hw-brand { gap: 14px; }
  .hw-brand img { width: 64px; height: 64px; border-radius: 17px; }
  .hw-brand h1 { font-size: 1.85rem; }
  .hw-headline { margin-block: 28px 22px; font-size: clamp(2.15rem, 9.4vw, 3.2rem); }
  .hw-lead { font-size: .98rem; }
  .hw-phone { width: min(100%, 255px); }
  .hw-phone img { border-radius: 32px; }
  .hw-main { padding-block: 48px 12px; }
  .hw-section { margin-block-end: 60px; }
  .hw-stats { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 26px 14px; padding-block: 26px; }
  .hw-stats strong { font-size: 2.5rem; }
  .hw-features, .hw-steps { grid-template-columns: 1fr; gap: 20px; }
  .hw-features li { padding: 25px; }
  .hw-phrases { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
  .hw-phrases li { padding: 18px 16px; }
  .hw-phrase { font-size: 1.5rem; }
  .hw-language-list { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 20px; }
  .hw-language-list li { flex-direction: column; gap: 2px; }
  .hw-gallery { grid-template-columns: 1fr; gap: 30px; }
  .hw-gallery figure { width: min(100%, 290px); justify-self: center; }
  .hw-gallery img, .hw-gallery a { border-radius: 22px; }
  .hw-steps li { display: grid; grid-template-columns: 38px minmax(0, 1fr); column-gap: 16px; padding-block-start: 20px; }
  .hw-steps .hw-number { grid-column: 1; grid-row: 1 / span 2; margin: 0; }
  .hw-steps :is(h3, p, div) { grid-column: 2; }
  .hw-privacy { padding: 28px 22px; border-radius: 14px; }
  .hw-contact { padding-block-end: 28px; }
}
@media (max-width: 380px) {
  .hw-brand h1 { font-size: 1.65rem; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}