/* ===========================================================================
   XHealth — Legal pages (Terms & Conditions · Privacy Policy)
   Self-contained layout that consumes the design-system tokens in styles.css.
   Bilingual (中 / EN) is pure-CSS: toggling html[data-lang] shows one language.
   =========================================================================== */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text-body);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: var(--leading-relaxed);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
html[data-lang="zh"] body { font-family: var(--font-zh); }

/* -------- bilingual switch (pure CSS) -------- */
.i18n-en, .i18n-zh { }
html[data-lang="en"] .i18n-zh { display: none !important; }
html[data-lang="zh"] .i18n-en { display: none !important; }

a { color: var(--brand-accent-hover); text-decoration: none; }
a:hover { color: var(--brand-primary); }

/* ============================ TOP NAV ============================ */
.lnav {
  position: sticky; top: 0; z-index: 60;
  display: flex; align-items: center; gap: 20px;
  padding: 14px clamp(18px, 5vw, 56px);
  background: rgba(255,255,255,.86);
  backdrop-filter: saturate(150%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.lnav__logo { height: 30px; width: auto; display: block; }
.lnav__spacer { flex: 1; }
.lnav__links { display: flex; align-items: center; gap: 8px; }
.lnav__link {
  font-size: 14px; font-weight: 500; color: var(--text-body);
  padding: 8px 12px; border-radius: 999px; transition: background .18s, color .18s;
}
.lnav__link:hover { background: var(--bg-muted); color: var(--brand-primary); }
.lnav__link--active { color: var(--brand-primary); font-weight: 700; }
.langtoggle {
  display: inline-flex; align-items: center; gap: 6px; cursor: pointer;
  background: none; border: 1px solid var(--border-strong); border-radius: 999px;
  padding: 7px 13px; font-family: var(--font-mono); font-size: 12.5px; font-weight: 600;
  letter-spacing: .04em; color: var(--text-strong); transition: border-color .2s;
}
.langtoggle:hover { border-color: var(--brand-primary); }
.langtoggle svg { width: 15px; height: 15px; }
.langtoggle__cur { color: var(--brand-primary); }
.langtoggle__alt { color: var(--text-faint); }
.lnav__back {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13.5px; font-weight: 600; color: var(--text-strong);
  border: 1px solid var(--border-strong); border-radius: 999px; padding: 8px 15px;
  transition: background .18s, color .18s, border-color .18s;
}
.lnav__back:hover { background: var(--brand-primary); color: #fff; border-color: var(--brand-primary); }
.lnav__back svg { width: 15px; height: 15px; }

/* ============================ DOC HEAD ============================ */
.lwrap { max-width: 1140px; margin-inline: auto; padding-inline: clamp(18px, 5vw, 56px); }
.lhead {
  padding-top: clamp(48px, 8vw, 92px);
  padding-bottom: clamp(28px, 4vw, 44px);
  border-bottom: 1px solid var(--border);
}
.eyebrow {
  display: inline-block; font-family: var(--font-mono); font-size: 12px; font-weight: 600;
  letter-spacing: .22em; text-transform: uppercase; color: var(--brand-accent-hover); margin-bottom: 20px;
}
.lhead h1 {
  margin: 0; color: var(--text-strong); font-family: var(--font-display);
  font-weight: 800; letter-spacing: var(--tracking-tight); line-height: 1.08;
  font-size: var(--text-4xl);
}
html[data-lang="zh"] .lhead h1 { font-family: var(--font-zh); letter-spacing: -0.01em; }
.lmeta { display: flex; flex-wrap: wrap; gap: 10px 14px; margin-top: 22px; }
.lmeta__chip {
  display: inline-flex; align-items: center; gap: 7px;
  font-family: var(--font-mono); font-size: 12.5px; font-weight: 500; letter-spacing: .02em;
  color: var(--text-muted); background: var(--bg-subtle);
  border: 1px solid var(--border); border-radius: 999px; padding: 6px 13px;
}
.lmeta__chip b { color: var(--text-strong); font-weight: 700; }
.lmeta__chip svg { width: 14px; height: 14px; color: var(--brand-accent); }
.lintro {
  margin-top: 26px; max-width: 68ch;
  font-size: var(--text-md); line-height: 1.75; color: var(--text-body);
}
html[data-lang="zh"] .lintro { line-height: 1.95; }

/* company identity card */
.lcompany {
  margin-top: 26px; display: grid; gap: 4px 28px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  background: var(--bg-subtle); border: 1px solid var(--border); border-radius: 16px;
  padding: 20px 24px;
}
.lcompany__row { display: flex; flex-direction: column; gap: 2px; padding: 8px 0; }
.lcompany__k { font-family: var(--font-mono); font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--text-faint); }
.lcompany__v { font-size: 14.5px; color: var(--text-strong); font-weight: 500; }
.lcompany__v a { color: var(--brand-accent-hover); }
.lcompany__v.todo { color: var(--text-muted); font-style: italic; }

/* ============================ BODY / TOC ============================ */
.lbody {
  display: grid; grid-template-columns: 236px 1fr; gap: clamp(32px, 5vw, 72px);
  padding-top: clamp(36px, 5vw, 56px); padding-bottom: clamp(56px, 8vw, 96px);
  align-items: start;
}
.ltoc { position: sticky; top: 84px; }
.ltoc__label {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: .16em; text-transform: uppercase;
  color: var(--text-faint); margin-bottom: 14px; padding-left: 14px;
}
.ltoc__list { list-style: none; margin: 0; padding: 0; border-left: 2px solid var(--border); }
.ltoc__list a {
  display: block; padding: 7px 14px; margin-left: -2px;
  border-left: 2px solid transparent; font-size: 13.5px; line-height: 1.4;
  color: var(--text-muted); transition: color .16s, border-color .16s;
}
.ltoc__list a:hover { color: var(--brand-primary); }
.ltoc__list a.active { color: var(--brand-primary); font-weight: 700; border-left-color: var(--brand-accent); }

/* content */
.lcontent { max-width: 76ch; }
.lsec { padding-top: 8px; margin-bottom: 40px; scroll-margin-top: 84px; }
.lsec > h2 {
  display: flex; gap: 12px; align-items: baseline;
  margin: 0 0 16px; color: var(--text-strong);
  font-family: var(--font-display); font-weight: 700; letter-spacing: var(--tracking-tight);
  font-size: var(--text-xl); line-height: 1.25;
}
html[data-lang="zh"] .lsec > h2 { font-family: var(--font-zh); }
.lsec__n {
  flex: none; font-family: var(--font-mono); font-weight: 600; font-size: 15px;
  color: var(--brand-accent); min-width: 26px;
}
.lsec p { margin: 0 0 14px; color: var(--text-body); }
.lsec p:last-child { margin-bottom: 0; }
.lsec strong { color: var(--text-strong); font-weight: 700; }
.lsec h3 {
  margin: 22px 0 10px; color: var(--text-strong);
  font-family: var(--font-display); font-weight: 700; font-size: var(--text-md);
}
html[data-lang="zh"] .lsec h3 { font-family: var(--font-zh); }
.lsec ul { margin: 0 0 14px; padding: 0; list-style: none; }
.lsec li {
  position: relative; padding-left: 24px; margin-bottom: 10px; color: var(--text-body);
}
.lsec li::before {
  content: ""; position: absolute; left: 4px; top: 11px;
  width: 6px; height: 6px; border-radius: 999px; background: var(--brand-accent);
}
html[data-lang="zh"] .lsec p, html[data-lang="zh"] .lsec li { line-height: 1.95; }

/* highlight callout (key points / consent) */
.lnote {
  margin: 18px 0; padding: 16px 20px; border-radius: 14px;
  background: var(--bg-subtle); border: 1px solid var(--border);
  border-left: 3px solid var(--brand-accent);
  font-size: 14.5px; line-height: 1.7; color: var(--text-body);
}
.lnote strong { color: var(--text-strong); }

/* end-of-doc cross link */
.lcross {
  margin-top: 8px; display: flex; flex-wrap: wrap; gap: 14px; align-items: center;
  padding: 22px 24px; border-radius: 16px;
  background: var(--gradient-mesh), var(--bg-subtle);
  border: 1px solid var(--border);
}
.lcross__txt { font-size: 14.5px; color: var(--text-body); }
.lcross a {
  display: inline-flex; align-items: center; gap: 6px; font-weight: 700; font-size: 14px;
  color: var(--brand-primary);
}
.lcross a svg { width: 15px; height: 15px; }

.ldisclaimer {
  margin-top: 30px; font-size: 12.5px; line-height: 1.7; color: var(--text-faint);
  border-top: 1px dashed var(--border-strong); padding-top: 18px;
}

/* ============================ FOOTER ============================ */
.footer { background: var(--navy-900); color: var(--text-on-dark-muted); padding-block: 60px 30px; }
.footer__grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 40px; }
.footer__logo { height: 30px; margin-bottom: 18px; }
.footer__tag { font-family: var(--font-zh); font-size: 14px; color: var(--text-on-dark-muted); max-width: 280px; line-height: 1.7; margin: 0; }
.footer__col { display: flex; flex-direction: column; }
.footer__col h4 { font-family: var(--font-display); font-size: 13px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--text-on-dark-faint); margin: 0 0 16px; }
.footer__col a, .footer__col .footer__plain { display: block; color: var(--text-on-dark-muted); font-size: 14.5px; padding: 6px 0; text-decoration: none; transition: color .15s; }
.footer__col a:hover { color: #fff; }
.footer__bottom {
  display: flex; justify-content: space-between; align-items: center; gap: 12px 22px;
  margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--border-on-dark);
  font-size: 13px; color: var(--text-on-dark-faint); flex-wrap: wrap;
}
.footer__legal { display: flex; align-items: center; gap: 6px 16px; flex-wrap: wrap; }
.footer__legal a { color: var(--text-on-dark-muted); text-decoration: none; transition: color .15s; }
.footer__legal a:hover { color: #fff; }
.footer__legal .sep { color: var(--text-on-dark-faint); opacity: .5; }
.footer__motto { font-family: var(--font-mono); letter-spacing: .04em; }

/* ============================ RESPONSIVE ============================ */
@media (max-width: 900px) {
  .lbody { grid-template-columns: 1fr; }
  .ltoc { display: none; }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 30px; }
}
@media (max-width: 620px) {
  .lnav { gap: 10px; padding-inline: 16px; }
  .lnav__links { gap: 6px; }
  .lnav__back span { display: none; }
  .footer__grid { grid-template-columns: 1fr; gap: 26px; }
  .footer__bottom { flex-direction: column; align-items: flex-start; gap: 12px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}