:root {
  --paper: #ffffff;
  --ink: #1b2430;
  --mist: #eef1ee;
  --cinnabar: #c8322b;
  --jade: #2f6b4f;
  --quiet: #5f6873;
  --measure: 68ch;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Figtree, system-ui, sans-serif;
  font-size: 18px;
  line-height: 1.5;
}
.zh { font-family: "Noto Serif SC", serif; }
a { color: inherit; }
h1, h2, h3 { margin: 0; line-height: 1.15; font-weight: 700; }
h1 { font-size: clamp(2rem, 5vw, 3.25rem); letter-spacing: -0.01em; }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); }
h2 .zh { display: block; font-size: 0.75em; font-weight: 500; color: var(--quiet); margin-top: 0.25rem; }
p { margin: 0 0 1rem; max-width: var(--measure); }
.wrap { width: min(1100px, 100% - 2rem); margin-inline: auto; }
header { padding: 1.25rem 0; display: flex; align-items: baseline; gap: 0.6rem; }
.mark { font-size: 1.5rem; font-weight: 700; }
.mark .zh { color: var(--cinnabar); }
header .lang { margin-left: auto; font-size: 0.95rem; color: var(--quiet); }
.hero { display: grid; gap: 3rem; padding: 2rem 0 4rem; align-items: start; grid-template-areas: "copy" "passage" "signup"; }
.copy { grid-area: copy; } .passage { grid-area: passage; } .signup { grid-area: signup; }
@media (min-width: 900px) { .hero { grid-template-columns: 1fr 1fr; grid-template-areas: "copy passage" "signup passage"; row-gap: 1rem; padding-top: 4rem; } }
.lede { font-size: 1.4rem; color: var(--quiet); margin: 0.75rem 0 1.25rem; }

/* The passage: the product, on the page */
.passage { padding: 2rem 0; border-top: 3px solid var(--ink); }
.passage .hint { color: var(--quiet); font-size: 0.95rem; margin-bottom: 1rem; }
.chars { font-size: clamp(2.2rem, 6vw, 3.4rem); line-height: 1.7; letter-spacing: 0.06em; margin: 0; }
.ch { position: relative; cursor: pointer; border-radius: 4px; padding: 0 0.04em; transition: background 120ms; }
.ch:hover, .ch:focus-visible { background: var(--mist); outline: none; }
.ch.open { background: var(--mist); }
.ch .tip {
  position: absolute; left: 50%; bottom: 100%; transform: translate(-50%, -6px);
  background: var(--ink); color: var(--paper);
  font-family: Figtree, sans-serif; font-size: 0.95rem; line-height: 1.3;
  padding: 0.4rem 0.6rem; border-radius: 6px; white-space: nowrap; letter-spacing: 0;
  display: none;
}
.ch.open .tip { display: block; }
.ch .tip b { display: block; font-weight: 700; }
.punct { color: var(--quiet); }

form { margin-top: 2rem; display: grid; gap: 0.9rem; max-width: 30rem; }
label { display: grid; gap: 0.3rem; font-weight: 500; font-size: 0.95rem; }
input, select {
  font: inherit; padding: 0.65rem 0.75rem; border: 1.5px solid var(--ink); border-radius: 6px;
  background: var(--paper); color: var(--ink); width: 100%;
}
input:focus-visible, select:focus-visible { outline: 3px solid var(--cinnabar); outline-offset: 1px; }
.row { display: grid; gap: 0.9rem; grid-template-columns: 1fr 1fr; }
button {
  font: inherit; font-weight: 700; padding: 0.8rem 1.2rem; border: 0; border-radius: 6px;
  background: var(--cinnabar); color: var(--paper); cursor: pointer; justify-self: start;
}
button:focus-visible { outline: 3px solid var(--ink); outline-offset: 2px; }
button[disabled] { opacity: 0.6; cursor: wait; }
.note { font-size: 0.9rem; color: var(--quiet); }
.done { padding: 1rem; background: var(--mist); border-left: 4px solid var(--jade); }
.err { color: var(--cinnabar); font-weight: 500; }
.hp { position: absolute; left: -9999px; }

section { padding: 3.5rem 0; }
.steps { padding-left: 0; list-style: none; margin: 2rem 0 0; display: grid; gap: 2rem; counter-reset: step; }
@media (min-width: 900px) { .steps { grid-template-columns: repeat(3, 1fr); } }
.steps li { counter-increment: step; max-width: 34ch; }
.steps li::before { content: counter(step); display: block; font-family: "Noto Serif SC", serif; font-size: 2rem; font-weight: 700; color: var(--cinnabar); }
.steps h3 { font-size: 1.15rem; margin-bottom: 0.4rem; }
.schools { background: var(--mist); }
.schools a.cta { display: inline-block; font-weight: 700; color: var(--jade); }
.people { display: grid; gap: 2rem; margin-top: 2rem; }
@media (min-width: 900px) { .people { grid-template-columns: 1fr 1fr; } }
.people h3 { font-size: 1.1rem; }
.people h3 a { text-decoration-color: var(--quiet); text-underline-offset: 3px; }
.people p { font-size: 1rem; color: var(--quiet); }
footer { margin-top: 2rem; padding: 2rem 0 3rem; border-top: 3px solid var(--ink); display: flex; justify-content: space-between; align-items: flex-start; gap: 2rem; flex-wrap: wrap; color: var(--quiet); font-size: 0.95rem; }
footer .tagline { margin: 0.25rem 0 0; font-size: 1.1rem; color: var(--quiet); }
footer .contact { text-align: right; } footer .contact p { margin: 0.25rem 0 0; }
footer a { color: var(--ink); font-weight: 500; }
.fish { display:flex; align-items:center; gap:1.25rem; margin-top:1.5rem; position:relative; }
.fish svg { width:120px; height:90px; cursor:pointer; flex:none; transition: transform 80ms; user-select:none; }
.fish svg:active { transform: scale(0.94); }
.fish svg:focus-visible { outline: 3px solid var(--cinnabar); outline-offset: 4px; border-radius: 8px; }
.fish .merit { font-size:1.1rem; margin:0; } .fish .merit b { font-size:1.4rem; }
.fish .plus { position:absolute; left:60px; top:0; transform:translateX(-50%); font-size:1.3rem; font-weight:700; color:var(--cinnabar); pointer-events:none; animation: rise 900ms ease-out forwards; }
@keyframes rise { from { opacity:1; transform:translate(-50%,0); } to { opacity:0; transform:translate(-50%,-60px); } }
@media (prefers-reduced-motion: reduce) { .ch { transition: none; } .fish .plus { animation-duration: 1ms; } }