:root {
  color-scheme: light;
  --ink: #111111;
  --paper: #fffdf8;
  --pink: #ffaec9;
  --pink-soft: #ffc5d9;
  --yellow: #fff275;
  --mint: #98ffd9;
  --lavender: #cdb7ff;
  --orange: #ff8a5b;
  --blue: #8ed7ff;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 8%, rgba(255, 242, 117, 0.85) 0 7rem, transparent 7.1rem),
    radial-gradient(circle at 90% 25%, rgba(152, 255, 217, 0.7) 0 9rem, transparent 9.1rem),
    linear-gradient(160deg, var(--pink) 0%, var(--pink-soft) 52%, #ffe4ee 100%);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", sans-serif;
  line-height: 1.65;
  min-height: 100vh;
}
a { color: inherit; }
.skip-link {
  position: absolute;
  top: -5rem;
  left: 1rem;
  z-index: 100;
  padding: 0.7rem 1rem;
  border: 3px solid var(--ink);
  background: white;
  font-weight: 800;
}
.skip-link:focus { top: 1rem; }
.shell {
  width: min(70rem, calc(100% - 2rem));
  margin-inline: auto;
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 4px solid var(--ink);
  background: rgba(255, 174, 201, 0.92);
  backdrop-filter: blur(12px);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4.5rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  font-size: 1.05rem;
  font-weight: 900;
}
.brand img {
  width: 2.5rem;
  height: 2.5rem;
  border: 3px solid var(--ink);
  border-radius: 0.8rem;
}
.language-link,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 3px solid var(--ink);
  border-radius: 0.85rem;
  box-shadow: 4px 4px 0 var(--ink);
  font-weight: 900;
  text-decoration: none;
  transition: transform 120ms ease, box-shadow 120ms ease;
}
.language-link {
  padding: 0.45rem 0.75rem;
  background: white;
  font-size: 0.9rem;
}
.language-link:hover,
.button:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--ink);
}
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(16rem, 0.6fr);
  align-items: center;
  gap: 3rem;
  padding-block: clamp(4rem, 9vw, 7rem);
}
.eyebrow {
  display: inline-block;
  margin: 0 0 1.2rem;
  padding: 0.35rem 0.75rem;
  border: 3px solid var(--ink);
  border-radius: 999px;
  background: var(--yellow);
  font-size: 0.83rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
h1, h2, h3, p { margin-top: 0; }
h1 {
  max-width: 16ch;
  margin-bottom: 1.2rem;
  font-size: clamp(2.65rem, 7vw, 5.5rem);
  line-height: 0.98;
  letter-spacing: -0.055em;
  text-wrap: balance;
}
.lede {
  max-width: 42rem;
  margin-bottom: 1.8rem;
  font-size: clamp(1.1rem, 2.1vw, 1.35rem);
  font-weight: 650;
}
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}
.button {
  min-height: 3.4rem;
  padding: 0.75rem 1.15rem;
  background: var(--yellow);
}
.button.secondary { background: white; }
.privacy-note {
  margin: 1.3rem 0 0;
  font-size: 0.92rem;
  font-weight: 750;
}
.word-stack {
  display: grid;
  gap: 0.8rem;
  transform: rotate(2deg);
}
.word-chip {
  border: 4px solid var(--ink);
  border-radius: 1.15rem;
  box-shadow: 6px 6px 0 var(--ink);
  padding: 1.05rem 1.2rem;
  background: white;
  font-size: clamp(1.35rem, 4vw, 2.1rem);
  font-weight: 950;
  line-height: 1;
}
.word-chip:nth-child(1) { background: var(--mint); transform: rotate(-4deg); }
.word-chip:nth-child(2) { background: var(--lavender); transform: translateX(1rem) rotate(2deg); }
.word-chip:nth-child(3) { background: var(--yellow); transform: rotate(-1deg); }
.word-chip:nth-child(4) { background: var(--orange); transform: translateX(0.6rem) rotate(3deg); }
.content-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr);
  align-items: start;
  gap: 2rem;
  padding-bottom: 2rem;
}
.toc,
.panel,
.step,
.comparison,
.cta {
  border: 4px solid var(--ink);
  border-radius: 1.25rem;
  box-shadow: 6px 6px 0 var(--ink);
}
.toc {
  position: sticky;
  top: 6rem;
  padding: 1.35rem;
  background: white;
}
.toc h2 { margin-bottom: 0.6rem; font-size: 1.1rem; }
.toc ol { margin: 0; padding-left: 1.35rem; }
.toc a {
  font-weight: 750;
  text-decoration-thickness: 2px;
  text-underline-offset: 0.2rem;
}
.article { display: grid; gap: 1.4rem; }
.panel {
  padding: clamp(1.4rem, 4vw, 2.3rem);
  background: var(--paper);
}
.panel:nth-child(2n) { background: #ffffff; }
.panel h2 {
  margin-bottom: 0.8rem;
  font-size: clamp(1.65rem, 3.5vw, 2.35rem);
  line-height: 1.15;
}
.panel p:last-child,
.panel ul:last-child { margin-bottom: 0; }
.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.2rem;
}
.step { padding: 1.1rem; background: var(--mint); }
.step:nth-child(2) { background: var(--lavender); }
.step:nth-child(3) { background: var(--yellow); }
.step-number {
  display: grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  margin-bottom: 0.8rem;
  border: 3px solid var(--ink);
  border-radius: 50%;
  background: white;
  font-weight: 950;
}
.step h3 { margin-bottom: 0.35rem; font-size: 1.05rem; }
.step p { margin-bottom: 0; font-size: 0.93rem; }
.comparison { overflow: hidden; margin-top: 1.2rem; background: white; }
.comparison-row { display: grid; grid-template-columns: 1fr 1fr; }
.comparison-row + .comparison-row { border-top: 3px solid var(--ink); }
.comparison-row > div { padding: 0.9rem 1rem; }
.comparison-row > div + div { border-left: 3px solid var(--ink); }
.comparison-row.header { background: var(--blue); font-weight: 900; }
.honesty {
  padding: 1rem 1.1rem;
  border-left: 0.5rem solid var(--ink);
  background: var(--yellow);
  font-weight: 700;
}
.cta {
  margin-block: 1.8rem 4rem;
  padding: clamp(1.6rem, 5vw, 3rem);
  background: var(--ink);
  color: white;
  text-align: center;
}
.cta h2 { margin-bottom: 0.7rem; font-size: clamp(1.8rem, 4vw, 2.8rem); }
.cta p { max-width: 40rem; margin-inline: auto; }
.cta .button { color: var(--ink); }
.site-footer {
  border-top: 4px solid var(--ink);
  background: rgba(255, 174, 201, 0.72);
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 1.8rem;
  font-size: 0.9rem;
  font-weight: 700;
}
.footer-links { display: flex; flex-wrap: wrap; gap: 1rem; }
@media (max-width: 760px) {
  .hero, .content-grid { grid-template-columns: 1fr; }
  .hero { gap: 2rem; padding-block: 3.5rem; }
  .word-stack { width: min(20rem, 90%); margin-inline: auto; }
  .toc { position: static; }
  .steps { grid-template-columns: 1fr; }
  html[lang="zh-Hans"] h1 { max-width: none; font-size: 2.35rem; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}