:root {
  --elysia-paper: #fffdfc;
  --elysia-wash: #f8f2f3;
  --elysia-blush: #efdee4;
  --elysia-line: #eadde0;
  --elysia-line-strong: #d9c5cb;
  --elysia-ink: #392b31;
  --elysia-muted: #7c6971;
  --elysia-berry: #a64668;
  --elysia-berry-dark: #81364f;
  --elysia-sage: #718779;
  --elysia-serif: "Songti SC", "STSong", "Noto Serif CJK SC", "Yu Mincho", Georgia, serif;
  --elysia-sans: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--elysia-paper); color: var(--elysia-ink); font-family: var(--elysia-sans); }
a { color: inherit; text-decoration: none; }
h1,h2,h3,p,figure { margin: 0; }
img { max-width: 100%; }
a,summary,select { touch-action: manipulation; }
:is(a,summary,select):focus-visible { outline: 2px solid var(--elysia-berry); outline-offset: 4px; }
.elysia-static-header { display:flex; align-items:center; justify-content:space-between; gap:20px; min-height:70px; padding:15px 28px; border-bottom:1px solid var(--elysia-line); background:var(--elysia-wash); }
.elysia-static-brand { display:flex; align-items:center; gap:10px; font-size:22px; font-weight:600; }
.elysia-static-brand > span { display:flex; align-items:center; justify-content:center; width:32px; height:32px; border-radius:50%; background:var(--elysia-blush); color:var(--elysia-berry); font-size:16px; }
.elysia-static-header select { max-width:110px; border:1px solid var(--elysia-line); border-radius:6px; padding:8px; background:var(--elysia-paper); color:var(--elysia-muted); font:inherit; font-size:14px; }
.elysia-static-header > a:not(.elysia-static-brand) { font-size:14px; color:var(--elysia-berry-dark); }
.elysia-static-languages { display:flex; justify-content:center; gap:24px; padding:32px 0 0; font-size:14px; color:var(--elysia-muted); }
.elysia-feature-symbol { display:block; color:var(--elysia-berry); font-size:30px; line-height:1; margin-bottom:20px; }
.elysia-conversation-heart { margin-left:auto; color:white; font-size:28px; }
.elysia-conversation { overflow:hidden; }
.elysia-companion-mark { overflow:hidden; }
.elysia-marketing :is(h1,h2,h3),.elysia-policy-page :is(h1,h2) { overflow-wrap:break-word; }
@media(max-width:700px) { .elysia-static-header {padding:14px 22px;} .elysia-static-brand {font-size:18px;} .elysia-feature-symbol {grid-row:span 2;margin:3px 0 0;} }
/* Public marketing and policy pages share the existing Elysia palette. */
.elysia-marketing, .elysia-policy-page { width: min(1200px, 100%); margin: auto; padding: 64px clamp(22px, 4vw, 64px) 48px; }
.elysia-marketing :is(h1, h2), .elysia-policy-heading h1 { font-family: var(--elysia-serif); font-weight: 500; letter-spacing: -.04em; }
.elysia-marketing p, .elysia-policy-page p { color: var(--elysia-muted); line-height: 1.9; }
.elysia-marketing-hero { display: grid; grid-template-columns: 1.1fr 1fr; gap: 64px; align-items: center; padding: 20px 0 80px; }
.elysia-marketing-copy h1 { font-size: clamp(46px, 5vw, 72px); line-height: 1.12; }
.elysia-marketing-copy > p { margin: 24px 0 30px; font-size: 17px; max-width: 48ch; }
.elysia-marketing-actions { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
.elysia-marketing-actions > a:not(.elysia-marketing-primary) { color: var(--elysia-berry-dark); text-decoration: underline; text-underline-offset: 5px; font-size: 14px; }
.elysia-marketing-primary { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 12px 22px; border-radius: 7px; background: var(--elysia-berry); color: white; font-size: 14px; font-weight: 600; text-align: center; }
.elysia-marketing-primary:hover { background: var(--elysia-berry-dark); }
.elysia-marketing-copy > small { display: block; margin-top: 22px; color: var(--elysia-muted); font-size: 12px; line-height: 1.8; }
.elysia-conversation { display: flex; flex-direction: column; min-height: 700px; padding: 28px; border: 1px solid var(--elysia-line-strong); border-radius: 22px 22px 22px 4px; background: linear-gradient(180deg, rgba(25, 22, 24, .36) 0%, rgba(25, 22, 24, .18) 30%, rgba(25, 22, 24, .48) 65%, rgba(25, 22, 24, .72) 100%), url('marketing/companion-portrait.png') center top / cover no-repeat; }
.elysia-conversation-heading { display: flex; gap: 14px; align-items: center; padding-bottom: 18px; border-bottom: 1px solid rgba(255,255,255,.25); color: white; }
.elysia-companion-mark { display: flex; align-items: center; justify-content: center; width: 48px; height: 48px; flex-shrink: 0; border-radius: 50%; background: var(--elysia-blush); color: var(--elysia-berry); font-family: var(--elysia-serif); font-size: 28px; }
.elysia-companion-mark img { width: 100%; height: 100%; object-fit: cover; object-position: center 20%; }
.elysia-conversation-heading strong { display: block; font-weight: 600; font-size: 14px; }
.elysia-conversation-heading div span { display: block; font-size: 12px; color: rgba(255,255,255,.9); margin-top: 4px; }
.elysia-conversation-heading > svg { margin-left: auto; color: white; flex-shrink: 0; }
.elysia-conversation-messages { display: flex; flex-direction: column; gap: 14px; padding-top: 210px; margin-top: auto; }
.elysia-conversation-messages p { max-width: 88%; padding: 13px 17px; font-size: 14px; line-height: 1.7; color: var(--elysia-ink); }
.elysia-conversation-messages .elysia-demo-user { align-self: flex-end; border-radius: 16px 16px 3px 16px; background: linear-gradient(110deg, #ad466e, #775198); color: white; }
.elysia-demo-companion { align-self: flex-start; border: 1px solid var(--elysia-line); border-radius: 16px 16px 16px 3px; background: var(--elysia-paper); }
.elysia-conversation figcaption { color: rgba(255,255,255,.92); font-size: 11px; text-align: center; margin-top: 22px; line-height: 1.7; }
.elysia-marketing-section-title { max-width: 650px; }
.elysia-marketing h2 { font-size: clamp(30px, 3.3vw, 44px); line-height: 1.22; }
.elysia-marketing-section-title > p { margin-top: 14px; }
.elysia-marketing-features { border-top: 1px solid var(--elysia-line); padding: 60px 0; scroll-margin-top: 24px; }
.elysia-feature-columns { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; margin-top: 40px; }
.elysia-feature-columns svg { color: var(--elysia-berry); margin-bottom: 20px; }
.elysia-feature-columns h3 { font-size: 18px; font-weight: 600; line-height: 1.5; margin-bottom: 12px; }
.elysia-feature-columns p { font-size: 15px; }
.elysia-marketing-trust { display: grid; grid-template-columns: 1.15fr 1fr; gap: 48px; align-items: center; padding: 40px; background: var(--elysia-wash); border-left: 3px solid var(--elysia-berry); }
.elysia-marketing-trust h2 { font-size: 32px; }
.elysia-marketing-trust p { font-size: 15px; margin-top: 20px; }
.elysia-marketing-trust nav { display: flex; flex-direction: column; gap: 18px; }
.elysia-policy-language-note { color: var(--elysia-muted); font-size: 12px; line-height: 1.7; }
.elysia-marketing:lang(zh-CN) .elysia-marketing-copy h1,
.elysia-marketing:lang(ja) .elysia-marketing-copy h1,
.elysia-marketing:lang(ko) .elysia-marketing-copy h1 { font-size: clamp(40px, 4.6vw, 64px); line-height: 1.35; letter-spacing: -.035em; word-break: keep-all; overflow-wrap: break-word; }
.elysia-marketing:lang(ko) :is(h2, h3, p) { word-break: keep-all; }
.elysia-marketing:lang(ja) :is(h1, h2, h3, p) { word-break: normal; overflow-wrap: normal; line-break: strict; }
.elysia-marketing-trust a { padding: 8px 0; color: var(--elysia-berry-dark); text-decoration: underline; text-underline-offset: 5px; font-size: 14px; line-height: 1.6; }
.elysia-marketing-faq { display: grid; grid-template-columns: .8fr 1.2fr; gap: 48px; padding: 72px 0; }
.elysia-marketing-faq details { padding: 20px 0; border-bottom: 1px solid var(--elysia-line); }
.elysia-marketing-faq details:first-child { padding-top: 6px; }
.elysia-marketing-faq summary { cursor: pointer; font-weight: 500; font-size: 16px; line-height: 1.6; }
.elysia-marketing-faq details p { padding-top: 16px; font-size: 14px; }
.elysia-marketing-faq details a { color: var(--elysia-berry-dark); text-decoration: underline; }
.elysia-marketing-invitation { padding: 42px 0 28px; text-align: center; border-top: 1px solid var(--elysia-line); }
.elysia-marketing-invitation a { margin-top: 28px; }
.elysia-site-footer { padding: 36px clamp(22px, 4vw, 64px) 24px; background: var(--elysia-wash); border-top: 1px solid var(--elysia-line); }
.elysia-footer-top, .elysia-footer-bottom { max-width: 1200px; margin: auto; display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.elysia-footer-brand { font-family: var(--elysia-serif); font-size: 24px; color: var(--elysia-ink); }
.elysia-footer-top p { color: var(--elysia-muted); font-size: 13px; margin-top: 10px; line-height: 1.8; }
.elysia-footer-top nav { display: flex; align-items: center; gap: 14px 24px; flex-wrap: wrap; }
.elysia-site-footer nav a, .elysia-footer-bottom a { color: var(--elysia-berry-dark); font-size: 13px; min-height: 32px; display: inline-flex; align-items: center; }
.elysia-site-footer a:hover { text-decoration: underline; text-underline-offset: 4px; }
.elysia-footer-bottom { margin-top: 26px; padding-top: 20px; border-top: 1px solid var(--elysia-line); align-items: center; gap: 10px 24px; }
.elysia-footer-bottom small { color: var(--elysia-muted); font-size: 12px; }
.elysia-home-about { max-width: 1320px; margin: 48px auto 0; padding-top: 28px; border-top: 1px solid var(--elysia-line); display: flex; gap: 20px; justify-content: space-between; align-items: center; flex-wrap: wrap; color: var(--elysia-muted); font-size: 14px; }
.elysia-home-about a { color: var(--elysia-berry-dark); text-decoration: underline; text-underline-offset: 4px; }
.elysia-policy-heading { padding-bottom: 40px; border-bottom: 1px solid var(--elysia-line); }
.elysia-policy-heading > a { color: var(--elysia-berry-dark); font-size: 14px; display: inline-block; padding: 6px 0; }
.elysia-policy-heading h1 { margin-top: 24px; font-size: clamp(38px, 5vw, 62px); line-height: 1.15; }
.elysia-policy-heading > p { max-width: 65ch; margin: 18px 0; font-size: 17px; }
.elysia-policy-heading small { color: var(--elysia-muted); font-size: 12px; line-height: 1.8; }
.elysia-policy-layout { display: grid; grid-template-columns: 230px minmax(0, 1fr); gap: 56px; padding-top: 40px; align-items: start; }
.elysia-policy-sidebar > nav { display: flex; flex-direction: column; gap: 8px; }
.elysia-policy-sidebar > nav a { padding: 12px 14px; font-size: 14px; border-radius: 6px; color: var(--elysia-muted); }
.elysia-policy-sidebar > nav a[aria-current="page"] { color: var(--elysia-berry-dark); background: var(--elysia-wash); border-left: 2px solid var(--elysia-berry); font-weight: 600; }
.elysia-policy-contact { border-top: 1px solid var(--elysia-line); margin-top: 24px; padding-top: 22px; font-size: 13px; line-height: 1.8; }
.elysia-policy-contact strong { display: block; font-weight: 600; margin-bottom: 8px; }
.elysia-policy-contact a { color: var(--elysia-berry-dark); }
.elysia-policy-toc { margin-top: 28px; font-size: 13px; }
.elysia-policy-toc summary { cursor: pointer; padding: 8px 0; font-weight: 600; }
.elysia-policy-toc nav { display: flex; flex-direction: column; padding-top: 12px; gap: 14px; }
.elysia-policy-toc a { color: var(--elysia-muted); line-height: 1.6; }
.elysia-policy-document { max-width: 72ch; }
.elysia-policy-document > section { margin-bottom: 34px; scroll-margin-top: 24px; }
.elysia-policy-document h2 { font-size: 21px; font-weight: 600; line-height: 1.5; margin-bottom: 14px; letter-spacing: -.02em; }
.elysia-policy-document p { font-size: 16px; margin: 0 0 16px; color: #66545d; }
.elysia-policy-callout { padding: 26px; margin-bottom: 36px; background: var(--elysia-wash); border-left: 3px solid var(--elysia-berry); }
.elysia-policy-callout .elysia-marketing-primary { color: white; margin-top: 4px; }
.elysia-policy-related { padding-top: 28px; border-top: 1px solid var(--elysia-line); }
.elysia-policy-related nav { display: flex; gap: 16px 24px; flex-wrap: wrap; }
.elysia-policy-related a { color: var(--elysia-berry-dark); text-decoration: underline; text-underline-offset: 4px; font-size: 14px; }
.elysia-policy-page a:hover { text-decoration: underline; text-underline-offset: 4px; }
:is(summary):focus-visible { outline: 2px solid var(--elysia-berry); outline-offset: 4px; }
@media (max-width: 900px) {
  .elysia-marketing-hero { gap: 32px; }
  .elysia-marketing-actions { gap: 18px; }
  .elysia-policy-layout { grid-template-columns: 190px minmax(0, 1fr); gap: 32px; }
  .elysia-marketing-trust { padding: 28px; gap: 32px; }
}
@media (max-width: 700px) {
  .elysia-marketing, .elysia-policy-page { padding-top: 32px; }
  .elysia-marketing-hero, .elysia-marketing-trust, .elysia-marketing-faq, .elysia-policy-layout { grid-template-columns: 1fr; gap: 32px; }
  .elysia-marketing-hero { padding-bottom: 48px; }
  .elysia-marketing-copy h1 { font-size: 46px; }
  .elysia-conversation { padding: 22px; }
  .elysia-marketing-features { padding: 40px 0; }
  .elysia-feature-columns { grid-template-columns: 1fr; gap: 30px; margin-top: 30px; }
  .elysia-feature-columns article { display: grid; grid-template-columns: 30px 1fr; column-gap: 16px; }
  .elysia-feature-columns svg { grid-row: span 2; margin: 3px 0 0; }
  .elysia-feature-columns h3 { margin-bottom: 8px; }
  .elysia-marketing-trust { padding: 26px; }
  .elysia-marketing-faq { padding: 48px 0; }
  .elysia-policy-sidebar > nav { flex-direction: row; flex-wrap: wrap; gap: 6px; }
  .elysia-policy-sidebar > nav a { padding: 10px 12px; }
  .elysia-policy-contact { margin-top: 16px; padding-top: 16px; }
  .elysia-policy-toc { margin-top: 16px; }
  .elysia-policy-callout { padding: 20px; }
  .elysia-policy-heading { padding-bottom: 28px; }
  .elysia-footer-top nav { gap: 8px 20px; }
}
@media (prefers-reduced-motion: reduce) {
  html, body, .studio-app main { scroll-behavior: auto; }
}