/* Avatar.gift — night & memory theme
   Palette: Night #0D1022 / Nebula #221A44 / Moonlight #EAE8F4 / Mist #9C99B0 / Ember #E9BC77 */

:root {
  --night: #0D1022;
  --nebula: #221A44;
  --moon: #EAE8F4;
  --mist: #9C99B0;
  --ember: #E9BC77;
  --ember-dim: rgba(233, 188, 119, 0.55);
  --line: rgba(234, 232, 244, 0.1);
  --display: ui-serif, "New York", "Songti SC", "STSong", Georgia, "Noto Serif SC", serif;
  --body: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Helvetica Neue", "Noto Sans SC", Arial, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  overflow-x: clip;
  background:
    radial-gradient(140% 100% at 75% -20%, var(--nebula) 0%, #14112B 48%, var(--night) 100%)
    var(--night);
  color: var(--moon);
  font-family: var(--body);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  min-height: 100svh;
}

/* ── bilingual: html.zh shows .zh, hides .en ── */
html:not(.zh) .zh { display: none !important; }
html.zh .en { display: none !important; }

::selection { background: rgba(233, 188, 119, 0.25); }

a { color: var(--ember); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
:focus-visible { outline: 2px solid var(--ember); outline-offset: 3px; border-radius: 2px; }

/* ── header ── */
.site-header {
  position: relative;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 68rem;
  margin: 0 auto;
  padding: 1.6rem 1.5rem;
}
.wordmark {
  font-family: var(--display);
  font-size: 1.05rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--moon);
}
.wordmark:hover { text-decoration: none; color: var(--ember); }

.lang-toggle { display: flex; align-items: center; gap: 0.15rem; }
.lang-toggle button {
  background: none;
  border: none;
  color: var(--mist);
  font: inherit;
  font-size: 0.85rem;
  padding: 0.3rem 0.55rem;
  cursor: pointer;
  border-radius: 6px;
  transition: color 0.2s;
}
.lang-toggle button:hover { color: var(--moon); }
.lang-toggle button[aria-pressed="true"] { color: var(--ember); }
.lang-toggle .sep { color: var(--line); font-size: 0.85rem; }

/* ── index hero ── */
#sky {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}
.veil {
  /* soft vignette so text always sits on quiet sky */
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: radial-gradient(70% 55% at 50% 46%, rgba(13, 16, 34, 0.55) 0%, rgba(13, 16, 34, 0) 70%);
}
.index-main { position: relative; z-index: 2; }

.hero {
  min-height: calc(100svh - 5.4rem);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem 1.5rem 4rem;
}
.hero h1 {
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(2.3rem, 8.5vw, 5rem);
  line-height: 1.08;
  letter-spacing: -0.015em;
  max-width: 15em;
}
html.zh .hero h1 { letter-spacing: 0.1em; line-height: 1.22; }
.hero h1 em {
  font-style: italic;
  color: var(--ember);
  text-shadow: 0 0 34px rgba(233, 188, 119, 0.35);
}
html.zh .hero h1 em { font-style: normal; }
.hero .sub {
  margin-top: 1.75rem;
  font-size: clamp(1.02rem, 2.4vw, 1.18rem);
  color: var(--mist);
  max-width: 36em;
}
.hero .sub strong { color: var(--moon); font-weight: 500; }
.hero .soon {
  margin-top: 3rem;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.65rem 1.5rem;
  font-size: 0.92rem;
  color: var(--mist);
  background: rgba(13, 16, 34, 0.45);
  backdrop-filter: blur(6px);
}
.hero .soon .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--ember);
  box-shadow: 0 0 10px var(--ember);
}

/* page-load sequence */
@media (prefers-reduced-motion: no-preference) {
  html.js .rise { opacity: 0; transform: translateY(14px); animation: rise 0.9s cubic-bezier(0.2, 0.6, 0.2, 1) forwards; }
  .rise-2 { animation-delay: 0.12s; }
  .rise-3 { animation-delay: 0.26s; }
  @keyframes rise { to { opacity: 1; transform: none; } }
}

/* ── row sections (features / principles) ── */
.rows-label {
  display: block;
  text-align: center;
  font-size: 0.78rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--ember-dim);
  margin-bottom: 1.2rem;
}
html.zh .rows-label { letter-spacing: 0.5em; font-size: 0.82rem; }

.principles {
  max-width: 46rem;
  margin: 0 auto;
  padding: 3rem 1.5rem 3.5rem;
}
.principle {
  display: grid;
  grid-template-columns: 1.6rem 12.5rem 1fr;
  gap: 1rem;
  align-items: baseline;
  padding: 2.1rem 0;
  border-top: 1px solid var(--line);
}
.principle:last-child { border-bottom: 1px solid var(--line); }
.principle .star { color: var(--ember-dim); font-size: 0.95rem; line-height: 1; }
.principle h2 {
  font-family: var(--display);
  font-size: 1.22rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--moon);
}
html.zh .principle h2 { letter-spacing: 0.08em; }
.principle p { color: var(--mist); font-size: 1rem; }

/* ── closing line ── */
.creed {
  text-align: center;
  padding: 3.5rem 1.5rem 6rem;
}
.creed .star { color: var(--ember-dim); display: block; margin-bottom: 1.4rem; }
.creed p {
  font-family: var(--display);
  font-size: clamp(1.45rem, 3.6vw, 2rem);
  font-weight: 500;
  line-height: 1.4;
  max-width: 24em;
  margin: 0 auto;
  color: var(--moon);
}
html.zh .creed p { letter-spacing: 0.08em; }

/* ── footer ── */
.site-footer {
  position: relative;
  z-index: 2;
  border-top: 1px solid var(--line);
  padding: 2.2rem 1.5rem 2.8rem;
  text-align: center;
  font-size: 0.9rem;
  color: var(--mist);
}
.site-footer nav { margin-bottom: 0.7rem; }
.site-footer nav a { color: var(--mist); margin: 0 0.9rem; }
.site-footer nav a:hover { color: var(--moon); text-decoration: none; }
.site-footer .fine { font-size: 0.82rem; opacity: 0.75; }

/* ── article pages (privacy / support) ── */
.article {
  position: relative;
  z-index: 2;
  max-width: 42rem;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 6rem;
}
.article h1 {
  font-family: var(--display);
  font-size: clamp(2.1rem, 5.5vw, 2.8rem);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 0.5rem;
}
html.zh .article h1 { letter-spacing: 0.1em; }
.article .updated { color: var(--mist); font-size: 0.9rem; margin-bottom: 2.8rem; }
.article .lede { font-size: 1.08rem; margin-bottom: 1rem; }
.article .lede strong { color: var(--ember); font-weight: 500; }
.article h2 {
  font-family: var(--display);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--ember);
  margin: 2.6rem 0 0.8rem;
}
html.zh .article h2 { letter-spacing: 0.06em; }
.article p, .article li { color: var(--moon); margin-bottom: 0.75rem; }
.article ul { padding-left: 1.25rem; }
.article li::marker { color: var(--ember-dim); }
.article .muted { color: var(--mist); font-size: 0.92rem; }
.article .card {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1.5rem 1.6rem;
  margin: 2rem 0;
  background: rgba(234, 232, 244, 0.03);
}
.article .card p { margin-bottom: 0.4rem; }
.faq-q { color: var(--moon); font-weight: 600; }

@media (max-width: 480px) {
  .hero h1 { font-size: 2.15rem; }
  html.zh .hero h1 { font-size: 2.3rem; }
  .creed p { font-size: 1.35rem; }
}

@media (max-width: 640px) {
  .principle { grid-template-columns: 1.4rem 1fr; }
  .principle p { grid-column: 2; }
  .site-header { padding: 1.3rem 1.25rem; }
}