:root {
  font-family:
    system-ui,
    -apple-system,
    "Segoe UI",
    sans-serif;
  color: #192c2a;
  background: #f5f7f3;
  font-synthesis: none;
  --green: #192c2a;
  --mint: #b5f1cf;
  --line: #dce4db;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
}
a {
  color: inherit;
  text-decoration: none;
}
button,
input,
select {
  font: inherit;
}
button,
a,
input,
select {
  touch-action: manipulation;
}
button,
select,
input {
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px 16px;
  background: #fff;
  color: var(--green);
}
button {
  cursor: pointer;
}
button:hover {
  border-color: #4e8069;
}
button:disabled {
  opacity: 0.48;
  cursor: default;
}
:focus-visible {
  outline: 3px solid #15794a;
  outline-offset: 3px;
}
header {
  height: 86px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 5%;
  gap: 12px;
}
.brand {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -1px;
}
.brand small {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0;
  margin-left: 10px;
}
#connection {
  font-size: 12px;
  color: #486254;
}
.layout {
  display: grid;
  grid-template-columns: 205px 1fr;
  max-width: 1320px;
  margin: auto;
  min-height: calc(100dvh - 86px);
}
aside {
  padding: 42px 24px;
  border-right: 1px solid var(--line);
}
nav {
  display: grid;
  gap: 7px;
}
nav a {
  padding: 14px;
  border-radius: 12px;
  font-size: 15px;
}
nav a[aria-current] {
  background: #e3ece1;
  font-weight: 700;
}
.eyebrow {
  font-size: 11px;
  letter-spacing: 2px;
  color: #5d7465;
  font-weight: 700;
}
.aside-note {
  font-size: 13px;
  line-height: 1.9;
  color: #67806c;
  margin-top: 60px;
}
main {
  padding: 42px 5%;
  max-width: 1100px;
  width: 100%;
}
h1 {
  font-size: 32px;
  letter-spacing: -1.2px;
  margin: 8px 0 14px;
}
h2 {
  font-size: 21px;
  margin: 0 0 18px;
}
h3 {
  font-size: 17px;
}
p {
  line-height: 1.7;
}
.muted,
small {
  color: #5c7263;
}
.hero {
  background: var(--green);
  color: white;
  padding: 36px;
  border-radius: 24px;
  position: relative;
  overflow: hidden;
  margin: 26px 0;
}
.hero p {
  color: #d0dfd5;
}
.hero h2 {
  font-size: 30px;
  line-height: 1.4;
}
.primary {
  background: var(--mint);
  color: #163d2a;
  border-color: transparent;
  font-weight: 700;
}
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(155px, 1fr));
  gap: 15px;
  margin: 20px 0;
}
.panel {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 24px;
  margin: 18px 0;
}
.metric strong {
  display: block;
  font-size: 30px;
  margin: 10px 0;
}
.metric {
  margin: 0;
}
.row {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}
.between {
  justify-content: space-between;
}
.actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin: 20px 0;
}
.flash {
  width: 100%;
  min-height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  border-radius: 24px;
  border: 1px solid var(--line);
  background: #fff;
  margin: 24px 0;
  gap: 20px;
  padding: 30px;
}
.flash strong {
  font-size: clamp(26px, 5vw, 48px);
  overflow-wrap: anywhere;
}
.flash small {
  font-size: 14px;
}
.flash.back {
  background: #e4f3e6;
}
.word-row {
  display: flex;
  gap: 14px;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}
.word-open {
  text-align: left;
  border: 0;
  background: none;
  flex: 1;
  padding: 4px;
}
.word-open strong {
  display: block;
  font-size: 18px;
}
.word-open span {
  display: block;
  color: #556c5d;
  font-size: 14px;
  margin-top: 7px;
}
.tag {
  font-size: 12px;
  background: #edf2eb;
  padding: 4px 8px;
  border-radius: 7px;
}
.filters {
  display: flex;
  gap: 9px;
  flex-wrap: wrap;
  margin: 20px 0;
}
.filters input {
  flex: 1;
  min-width: 140px;
}
.filters select {
  max-width: 100%;
}
.options {
  display: grid;
  gap: 12px;
  margin: 25px 0;
}
.options button {
  text-align: left;
  padding: 20px;
}
.correct {
  background: #d3f1dd;
}
.wrong {
  background: #ffe5de;
}
label {
  display: grid;
  gap: 8px;
  margin: 16px 0;
}
label input {
  max-width: 280px;
}
progress {
  width: 100%;
  height: 12px;
  accent-color: #3f8057;
}
#notice {
  position: fixed;
  bottom: 14px;
  left: 50%;
  transform: translateX(-50%);
  background: #192c2a;
  color: #fff;
  border-radius: 12px;
  padding: 12px 20px;
  max-width: 90vw;
  z-index: 20;
}
#notice:empty {
  display: none;
}
.error {
  color: #9d3224;
}
.bar {
  height: 12px;
  background: #b5f1cf;
  border-radius: 6px;
  min-width: 2px;
}
.week {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 10px;
}
.week > div {
  font-size: 12px;
  display: grid;
  gap: 10px;
}
details {
  margin-top: 20px;
}
summary {
  cursor: pointer;
  min-height: 44px;
}
footer {
  font-size: 12px;
  color: #5c7263;
  margin-top: 30px;
}
@media (max-width: 700px) {
  header {
    height: 70px;
    padding: 0 18px;
  }
  .brand {
    font-size: 23px;
  }
  .brand small {
    display: none;
  }
  .layout {
    display: block;
  }
  aside {
    border: 0;
    padding: 0;
  }
  aside > .eyebrow,
  .aside-note {
    display: none;
  }
  nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-around;
    background: #fff;
    border-top: 1px solid var(--line);
    padding: 7px 4px calc(7px + env(safe-area-inset-bottom));
    z-index: 10;
  }
  nav a {
    font-size: 11px;
    padding: 10px 5px;
    text-align: center;
  }
  nav a:nth-child(6),
  nav a:nth-child(7) {
    display: none;
  }
  main {
    padding: 26px 18px 110px;
  }
  h1 {
    font-size: 27px;
  }
  .hero {
    padding: 25px;
  }
  .hero h2 {
    font-size: 25px;
  }
  .grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .panel {
    padding: 18px;
  }
  .flash {
    min-height: 290px;
  }
  #notice {
    bottom: 85px;
  }
  .word-row .tag {
    display: none;
  }
}
@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto !important;
    animation: none !important;
    transition: none !important;
  }
}

.card-jump {
  margin-top: 18px;
}
.card-jump label {
  margin: 0;
  display: block;
}
.card-jump input {
  width: 112px;
  min-width: 0;
}