:root {
  --mist: #eef3ea;
  --sky: #d6e8e4;
  --forest: #22321e;
  --forest-soft: #4c5d47;
  --moss: #5b7b4a;
  --fawn: #a8683a;
  --fawn-light: #e6c29a;
  --leaf: #c9dcb8;
  --surface: #f8faf5;
  --round: "Yuanti SC", "YouYuan", "幼圆", "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, sans-serif;
  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --mist: #141b16;
    --sky: #1c2a27;
    --forest: #e4ecdf;
    --forest-soft: #aebca8;
    --moss: #93b57e;
    --fawn: #e3a370;
    --fawn-light: #7a5230;
    --leaf: #2a3a25;
    --surface: #1b241d;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--mist) linear-gradient(var(--sky), var(--mist) 520px) no-repeat;
  color: var(--forest);
  font: 17px/1.85 var(--sans);
  overflow-x: hidden;
}
a { color: inherit; }
:focus-visible { outline: 3px solid var(--fawn); outline-offset: 3px; border-radius: 6px; }
.top, main, .footer { width: min(980px, 100% - 32px); margin-inline: auto; }

.top { display: flex; justify-content: space-between; align-items: baseline; padding: 22px 0 0; }
.site-name { margin: 0; font: 700 22px/1 var(--round); color: var(--moss); letter-spacing: .12em; }
.whisper { margin: 0; font-size: 14px; color: var(--forest-soft); }

.hero { position: relative; text-align: center; padding: 56px 0 0; }
.meadow { position: absolute; left: 50%; bottom: 0; width: 100vw; transform: translateX(-50%); height: 220px; z-index: -1; }
.hills { width: 100%; height: 100%; display: block; }
.hill-back { fill: var(--leaf); opacity: .7; }
.hill-front { fill: var(--leaf); }
h1 { margin: 0; font: 700 clamp(34px, 7vw, 60px)/1.3 var(--round); letter-spacing: .04em; }
.intro { max-width: 30em; margin: 20px auto 0; color: var(--forest-soft); }

.breath { margin: 36px auto 0; padding-bottom: 150px; }
.ring {
  --s: 1;
  width: 220px; height: 220px; margin: 0 auto;
  border-radius: 50%;
  display: grid; place-items: center;
  background: radial-gradient(circle, var(--surface) 55%, var(--fawn-light) 56%, var(--fawn-light) 60%, transparent 61%);
  transform: scale(var(--s));
  transition: transform 4s cubic-bezier(.45,0,.55,1);
}
.ring.out { transition-duration: 6s; }
.deer { width: 150px; height: 150px; }
.deer .antler { fill: none; stroke: var(--forest-soft); stroke-width: 3.4; stroke-linecap: round; }
.deer .ear, .deer .face { fill: var(--fawn); }
.deer .muzzle { fill: var(--fawn-light); }
.deer .eye { fill: var(--forest); }
.deer .spot { fill: var(--surface); }
.cue { margin: 26px 0 0; font: 700 22px/1.4 var(--round); min-height: 1.4em; }
.breath-tools { margin-top: 14px; }
button {
  font: 700 16px/1 var(--round);
  color: var(--surface);
  background: var(--moss);
  border: 0;
  border-radius: 999px;
  padding: 14px 26px;
  cursor: pointer;
}
@media (prefers-color-scheme: dark) { button { color: #141b16; } }
button:hover { filter: brightness(1.08); }
.rounds { margin: 12px 0 0; font-size: 14px; color: var(--forest-soft); }

h2 { font: 700 26px/1.4 var(--round); margin: 0 0 16px; }
h3 { font: 700 19px/1.4 var(--round); margin: 6px 0 6px; }
.notes { padding: 64px 0 24px; }
.note-grid { display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr)); }
.note { background: var(--surface); border-radius: 28px 28px 28px 6px; padding: 24px 24px 18px; }
.note p { margin: 0; font-size: 16px; color: var(--forest-soft); }
.note-ico { width: 44px; height: 44px; fill: none; stroke: var(--fawn); stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; }

.today { padding: 40px 0 24px; }
.sub { margin: -8px 0 16px; font-size: 14px; color: var(--forest-soft); }
.checks { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 10px; }
.checks label {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 16px 8px 12px; border-radius: 999px;
  background: var(--surface); border: 2px solid var(--leaf);
  cursor: pointer; font-size: 16px;
}
.checks input { width: 18px; height: 18px; accent-color: var(--moss); margin: 0; }
.checks label:has(input:checked) { border-color: var(--moss); }
.cheer { min-height: 1.8em; margin: 14px 0 0; color: var(--moss); font-weight: 700; }

.notice { margin: 40px 0 48px; padding: 22px 24px; border-radius: 18px; border: 2px dashed var(--fawn); }
.notice h2 { font-size: 20px; margin-bottom: 6px; }
.notice p { margin: 0; }

.footer { padding: 24px 0 40px; color: var(--forest-soft); font-size: 14px; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 6px 24px; }
.footer p { margin: 0; }

@media (max-width: 480px) {
  body { font-size: 16px; }
  .ring { width: 180px; height: 180px; }
  .deer { width: 100px; height: 100px; }
}
@media (prefers-reduced-motion: reduce) {
  .ring, .ring.out { transition: none; transform: none; }
}