:root {
  --paper: #f3efe6;
  --ink: #1c1915;
  --muted: #5c564c;
  --line: #d9d0c0;
  --green: #0f5c4c;
  --green-ink: #f7f3ea;
  --card: #fffaf3;
  color-scheme: light;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Iowan Old Style", Palatino, "Palatino Linotype", "Songti SC", "Noto Serif SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", serif;
  line-height: 1.65;
}

body[data-lang="zh"] [data-show="en"] { display: none !important; }
body[data-lang="en"] [data-show="zh"] { display: none !important; }

.skip {
  position: absolute;
  left: 1rem;
  top: -4rem;
  background: var(--ink);
  color: var(--paper);
  padding: 0.4rem 0.7rem;
}

.skip:focus { top: 0.5rem; }

.bar {
  position: sticky;
  top: 0;
  z-index: 2;
  background: color-mix(in srgb, var(--paper) 92%, white);
  border-bottom: 1px solid var(--line);
}

.bar-inner, main, footer {
  width: min(760px, calc(100% - 2rem));
  margin-inline: auto;
}

.bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 3.5rem;
}

.brand {
  color: inherit;
  font-weight: 700;
  letter-spacing: 0.01em;
  text-decoration: none;
}

.bar-actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.free-pill {
  margin: 0;
  border: 1px solid var(--green);
  color: var(--green);
  border-radius: 999px;
  padding: 0.15rem 0.6rem;
  font-family: "Avenir Next", "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-size: 0.78rem;
}

.lang {
  display: flex;
  border: 1px solid var(--line);
  border-radius: 999px;
  overflow: hidden;
}

.lang button {
  border: 0;
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-size: 0.85rem;
  padding: 0.3rem 0.65rem;
  cursor: pointer;
}

.lang button[aria-pressed="true"] {
  background: var(--ink);
  color: var(--paper);
}

main { padding-bottom: 2rem; }

.hero { padding: 2.2rem 0 1rem; }

.kicker {
  margin: 0 0 0.8rem;
  color: var(--green);
  font-family: "Avenir Next", "PingFang SC", "Noto Sans SC", sans-serif;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
}

h1 {
  margin: 0;
  font-size: clamp(1.55rem, 4.4vw, 2.15rem);
  line-height: 1.35;
  font-weight: 650;
}

.cta-line { font-size: 1.05rem; }

.hero-actions { display: flex; flex-wrap: wrap; gap: 0.6rem; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 999px;
  background: var(--green);
  color: var(--green-ink);
  text-decoration: none;
  font-family: "Avenir Next", "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-size: 1rem;
  line-height: 1.2;
  padding: 0.85rem 1.15rem;
  cursor: pointer;
}

.button:focus-visible, .lang button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 2px;
}

h2 {
  font-size: 1.35rem;
  margin: 0 0 0.8rem;
}

.features ol, .boundary p, .form-wrap p, .note, .searchline {
  margin: 0;
}

.features {
  padding: 1.2rem 0 0.4rem;
}

.features ol {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 0.8rem;
}

.features li, .form-wrap, .wire, .boundary {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem 1rem 1.05rem;
}

.features h3 {
  margin: 0 0 0.25rem;
  font-size: 1.05rem;
}

.features p, .note, .searchline, .boundary p, .form-wrap > p {
  color: var(--muted);
}

.wire, .form-wrap, .boundary { margin-top: 0.9rem; }

.slots, .match {
  display: grid;
  gap: 0.5rem;
  margin-top: 0.8rem;
}

.slots { grid-template-columns: repeat(4, 1fr); }

.slot {
  border: 1px dashed #b7ad9c;
  border-radius: 10px;
  min-height: 4.4rem;
  padding: 0.45rem 0.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: repeating-linear-gradient(-45deg, transparent, transparent 6px, rgba(28, 25, 21, 0.03) 6px, rgba(28, 25, 21, 0.03) 7px);
}

.slot span, .match p {
  font-family: "Avenir Next", "PingFang SC", "Noto Sans SC", sans-serif;
  font-size: 0.75rem;
  color: var(--muted);
  margin: 0;
}

.slot strong { font-size: 1.3rem; }

.searchline { margin-top: 0.7rem; }

.match { grid-template-columns: repeat(3, 1fr); }

.match div {
  border-top: 3px solid var(--ink);
  padding-top: 0.4rem;
}

.match ul {
  margin: 0.3rem 0 0;
  padding-left: 1rem;
  color: var(--muted);
}

form { display: grid; gap: 0.75rem; margin-top: 0.9rem; }

label { display: grid; gap: 0.3rem; font-size: 0.95rem; }

input, select, textarea {
  width: 100%;
  border: 1px solid #c9bfae;
  border-radius: 10px;
  background: #fff;
  color: var(--ink);
  font: inherit;
  font-size: 16px;
  padding: 0.7rem 0.75rem;
}

textarea { resize: vertical; }

.hp {
  position: absolute;
  left: -9999px;
  height: 0;
  width: 0;
  opacity: 0;
}

.privacy { font-size: 0.92rem; }

.form-error, .setup {
  color: #8a2e24;
  background: #f8e7e3;
  border-radius: 10px;
  padding: 0.6rem 0.7rem;
}

.success {
  margin-top: 0.8rem;
  background: #e5f2ee;
  color: #0d3f35;
  border-radius: 10px;
  padding: 0.8rem 0.85rem;
}

footer {
  padding: 1.2rem 0 2.4rem;
  color: var(--muted);
  font-size: 0.92rem;
}

footer p { margin: 0 0 0.7rem; }

@media (max-width: 640px) {
  .slots, .match { grid-template-columns: 1fr 1fr; }
  .match { grid-template-columns: 1fr; }
  .bar-inner { align-items: flex-start; padding: 0.45rem 0; }
  .free-pill { display: none; }
}