:root {
  font-family:"Yu Gothic UI","Hiragino Kaku Gothic ProN",Meiryo,sans-serif;
  color:#273c50;
  background:#f5f9fc;
  font-synthesis:none;
  --blue:#347ddd;
  --muted:#62788b;
  --border:#e2eaf1
}

* {
  box-sizing:border-box
}

body {
  margin:0
}

button,input {
  font:inherit
}

button,a,input,summary {
  -webkit-tap-highlight-color:transparent
}

button {
  cursor:pointer
}

button:disabled {
  cursor:default
}

a {
  color:#2869b7
}

button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible {
  outline:3px solid #2262b0;
  outline-offset:4px
}

button {
  touch-action:manipulation
}

button:hover:enabled {
  filter:brightness(.97)
}

[hidden] {
  display:none!important
}

.site-header {
  max-width:1136px;
  margin:auto;
  padding:25px 28px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  border-bottom:1px solid var(--border)
}

.brand {
  display:flex;
  align-items:center;
  gap:10px;
  text-decoration:none;
  color:#2c465c;
  font-weight:800;
  font-size:19px;
  letter-spacing:.02em
}

.brand-en {
  font-size:9px;
  letter-spacing:.16em;
  color:#688095;
  border-left:1px solid #cfdce6;
  padding-left:12px;
  margin-left:5px
}

.header-note {
  font-size:11px;
  color:var(--muted)
}

.app-shell {
  max-width:990px;
  margin:auto;
  padding:0 24px
}

.intro {
  text-align:center;
  padding:34px 0 28px
}

.eyebrow {
  font-size:10px!important;
  letter-spacing:.2em;
  font-weight:700;
  color:#417dae!important;
  margin:0 0 12px!important
}

h1 {
  font-size:30px;
  letter-spacing:.07em;
  margin:0 0 12px
}

.intro>p {
  font-size:13px;
  line-height:1.9;
  color:var(--muted);
  margin:0
}

.mobile-break {
  display:none
}

.workout-layout {
  display:grid;
  grid-template-columns:minmax(0,1.22fr) minmax(0,1fr);
  gap:24px;
  align-items:stretch
}

.card {
  background:#fff;
  border:1px solid var(--border);
  border-radius:24px;
  box-shadow:0 7px 24px #254f7410
}

.workout {
  padding:23px 28px 18px;
  min-width:0
}

.workout-top {
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:8px
}

.section-label {
  font-size:12px;
  font-weight:700
}

.status {
  font-size:10px;
  border-radius:20px;
  background:#edf6f3;
  color:#417361;
  padding:6px 10px
}

.status::before {
  content:"";
  display:inline-block;
  width:5px;
  height:5px;
  background:currentColor;
  border-radius:50%;
  margin-right:6px
}

.ring {
  width:100%;
  max-width:350px;
  aspect-ratio:1;
  margin:20px auto 0;
  position:relative;
  container-type:inline-size
}

.ring-svg {
  position:absolute;
  width:100%;
  height:100%;
  transform:rotate(-90deg);
  overflow:visible
}

.ring-svg circle {
  fill:none;
  stroke-width:10
}

.ring-track {
  stroke:#e7f0f8
}

.ring-progress {
  stroke:var(--blue);
  stroke-linecap:round;
  stroke-dasharray:100;
  stroke-dashoffset:100
}

.ring-content {
  position:absolute;
  inset:5%;
  border-radius:50%;
  background:radial-gradient(ellipse at 50% 18%,#eff7ff,white 68%);
  display:flex;
  align-items:center;
  flex-direction:column;
  padding-top:10%
}

.paws {
  display:flex;
  gap:8cqw;
  height:31cqw;
  margin-bottom:2cqw
}

.paw {
  width:24cqw;
  height:25cqw;
  position:relative;
  color:#ccdfef
}

.paw svg {
  width:100%;
  height:100%;
  fill:currentColor;
  position:relative;
  z-index:1;
  transform:rotate(-10deg)
}

.paw:nth-child(2) svg {
  transform:rotate(10deg) scaleX(-1)
}

.paw.active {
  color:var(--blue)
}

.paw.active svg {
  filter:drop-shadow(0 0 9px #84bcf0a0)
}

.paw-label {
  display:block;
  text-align:center;
  font-size:2.7cqw;
  color:#72879b;
  margin-top:-1cqw;
  letter-spacing:.15em
}

.ripple {
  position:absolute;
  width:24cqw;
  height:24cqw;
  top:0;
  left:0;
  border:2px solid #90bff1;
  border-radius:50%;
  opacity:0
}

.active .ripple {
  animation:ripple .6s ease-out
}

.timer-label {
  font-size:3.2cqw;
  color:var(--muted)
}

.timer {
  font-size:15cqw;
  line-height:1.18;
  letter-spacing:.035em;
  font-weight:750;
  font-variant-numeric:tabular-nums;
  margin:1cqw 0 2cqw
}

.stats {
  width:67%;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:1cqw;
  text-align:center
}

.stats>div+div {
  border-left:1px solid var(--border)
}

.stat-label {
  font-size:2.9cqw;
  color:var(--muted);
  display:block;
  margin-bottom:1cqw
}

.stats strong {
  font-size:6cqw;
  font-weight:700;
  font-variant-numeric:tabular-nums
}

.unit {
  font-size:2.8cqw;
  margin-left:3px;
  color:var(--muted)
}

.session-summary {
  text-align:center;
  font-size:11px;
  color:var(--muted);
  margin:17px 0 6px
}

.message {
  text-align:center;
  color:#49789c;
  font-size:12px;
  min-height:40px;
  display:grid;
  place-items:center;
  padding:4px 0;
  line-height:1.6
}

.actions {
  display:flex;
  gap:10px;
  margin-top:8px
}

.primary,.reset {
  border:0;
  border-radius:12px;
  padding:16px 14px;
  font-size:14px;
  font-weight:700;
  min-height:52px
}

.primary {
  background:var(--blue);
  color:white;
  flex:1;
  box-shadow:0 4px 10px #347ddd24
}

.primary:disabled {
  opacity:.5
}

.reset {
  background:#edf3f8;
  color:#61788a;
  font-size:12px;
  min-width:83px
}

.subtle {
  font-size:10px;
  color:var(--muted);
  line-height:1.7
}

.center {
  text-align:center;
  margin-bottom:0
}

.settings {
  padding:26px
}

.settings-heading {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:8px;
  margin-bottom:25px
}

.settings h2 {
  font-size:17px;
  margin:0
}

.small-tag {
  background:#f3f7fa;
  color:#718598;
  border-radius:5px;
  padding:5px 7px;
  font-size:9px
}

fieldset {
  border:0;
  padding:0;
  margin:0;
  min-width:0
}

#settings-fields>fieldset {
  margin:0 0 23px
}

legend {
  font-size:12px;
  font-weight:700;
  display:block;
  width:100%;
  margin-bottom:10px
}

legend span {
  font-size:9px;
  color:var(--muted);
  font-weight:400;
  margin-left:8px
}

.segments {
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:7px
}

.segments button {
  background:#f6f9fc;
  border:1px solid #e6edf3;
  border-radius:10px;
  min-height:45px;
  font-size:17px;
  color:#4b6277;
  font-weight:700;
  padding:8px 4px
}

.segments button span {
  font-size:11px;
  margin-left:3px
}

.segments button[aria-pressed=true] {
  background:#eaf3ff;
  border-color:#70a5e9;
  color:#2469c2;
  box-shadow:0 0 0 1px #70a5e91f
}

.tempo button {
  min-height:65px
}

.tempo small {
  display:block;
  font-size:9px;
  font-weight:400;
  margin-top:5px
}

.modes {
  grid-template-columns:1fr 1fr;
  gap:5px
}

.modes button {
  font-size:10px;
  font-weight:600;
  min-height:42px;
  padding:8px 3px
}

.weight-row {
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:12px
}

.weight-row label {
  font-size:12px;
  font-weight:700
}

.weight-row label>span {
  display:block;
  font-size:9px;
  font-weight:400;
  color:var(--muted);
  margin-top:6px
}

.weight-control {
  display:flex;
  align-items:center;
  gap:7px;
  color:var(--muted);
  font-size:12px
}

.weight-control input {
  width:72px;
  border:1px solid #dce6ef;
  border-radius:8px;
  padding:10px 5px;
  text-align:center;
  font-weight:650;
  color:#354d62;
  background:#fff;
  font-size:16px;
  appearance:textfield
}

.weight-control input::-webkit-inner-spin-button {
  appearance:none
}

.settings-note {
  font-size:10px;
  color:var(--muted);
  margin:18px 0
}

.forecast {
  background:#f0f6fc;
  border:1px solid #e3edf7;
  border-radius:13px;
  padding:16px
}

.forecast-title {
  display:flex;
  justify-content:space-between;
  font-size:10px;
  color:#4a7396
}

.forecast-title>span:first-child {
  font-weight:700
}

.forecast-values {
  display:grid;
  grid-template-columns:1fr 1fr;
  text-align:center;
  margin-top:13px
}

.forecast-values>div+div {
  border-left:1px solid #dbe7f1
}

.forecast-values strong {
  font-size:27px;
  font-variant-numeric:tabular-nums
}

.forecast-values span {
  font-size:10px;
  margin-left:4px;
  color:var(--muted)
}

.forecast-values small {
  display:block;
  font-size:9px;
  color:var(--muted);
  margin-top:3px
}

fieldset:disabled .segments {
  opacity:.65
}

.error {
  font-size:11px;
  color:#a53d3d;
  line-height:1.6
}

.result {
  margin-top:15px;
  padding:16px;
  background:#edf7f1;
  border-radius:12px;
  font-size:12px;
  line-height:1.8;
  color:#38684b
}

.result p {
  margin:7px 0
}

.how-to {
  margin:40px 0 28px
}

.how-to h2 {
  text-align:center;
  font-size:16px;
  font-weight:650;
  margin-bottom:25px
}

.how-grid {
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:28px
}

.how-grid>div {
  position:relative;
  padding-left:35px
}

.number {
  position:absolute;
  left:0;
  top:0;
  background:#e5eff9;
  color:#5688b8;
  width:25px;
  height:25px;
  display:grid;
  place-items:center;
  border-radius:50%;
  font-size:10px
}

.how-grid h3 {
  font-size:12px;
  margin:3px 0 7px
}

.how-grid p {
  font-size:11px;
  line-height:1.9;
  color:var(--muted);
  margin:0
}

.explanation {
  border-top:1px solid var(--border);
  padding:18px 0;
  font-size:11px;
  line-height:1.9;
  color:var(--muted)
}

summary {
  cursor:pointer
}

.site-footer {
  max-width:1136px;
  border-top:1px solid var(--border);
  margin:18px auto 0;
  padding:24px 28px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  font-size:11px;
  color:var(--muted)
}

.site-footer>span {
  font-weight:700
}

.site-footer small {
  font-size:9px;
  font-weight:400
}

.site-footer>span small {
  display:block;
  margin-top:5px
}

.site-footer nav {
  display:flex;
  gap:20px
}

.site-footer a {
  color:var(--muted);
  text-decoration:none
}

.site-footer a:hover {
  text-decoration:underline
}

.skip {
  position:absolute;
  top:-100px;
  left:10px;
  z-index:5;
  background:white;
  padding:10px
}

.skip:focus {
  top:10px
}

.document {
  max-width:760px;
  margin:36px auto;
  padding:32px;
  line-height:1.95
}

.document h1 {
  font-size:26px;
  margin-top:18px
}

.document h2 {
  font-size:17px;
  margin-top:30px
}

.document p,.document li {
  font-size:13px;
  color:#546b7c
}

.document .back {
  font-size:12px
}

.document .primary {
  display:inline-block;
  text-decoration:none;
  color:white;
  margin:16px 0
}

.document .eyebrow {
  margin-top:26px!important
}

@keyframes ripple {
  from {
    transform:scale(.55);
    opacity:.7
  }
  to {
    transform:scale(1.45);
    opacity:0
  }
}

@media(prefers-reduced-motion:reduce) {
  .active .ripple {
    animation:none
  }
  .paw.active svg {
    filter:none
  }
}

@media(max-width:720px) {
  .site-header {
    padding:17px 20px
  }
  .header-note,.brand-en {
    display:none
  }
  .brand {
    font-size:17px
  }
  .app-shell {
    max-width:480px;
    padding:0 16px
  }
  .intro {
    padding:26px 0 23px
  }
  h1 {
    font-size:24px
  }
  .intro>p {
    font-size:11px
  }
  .mobile-break {
    display:block
  }
  .workout-layout {
    grid-template-columns:1fr;
    gap:17px
  }
  .workout {
    padding:20px 20px 17px
  }
  .ring {
    max-width:330px;
    margin-top:14px
  }
  .settings {
    padding:23px
  }
  .settings-heading {
    margin-bottom:22px
  }
  .modes button {
    font-size:11px
  }
  .how-to {
    margin:30px 6px
  }
  .how-to h2 {
    font-size:14px
  }
  .how-grid {
    grid-template-columns:1fr;
    gap:21px
  }
  .how-grid p br {
    display:none
  }
  .site-footer {
    flex-direction:column;
    text-align:center;
    gap:17px;
    padding:24px 12px
  }
  .site-footer nav {
    gap:20px
  }
  .document {
    margin:22px 16px;
    padding:24px
  }
  .document h1 {
    font-size:23px
  }
  .timer {
    letter-spacing:0
  }
  .session-summary {
    font-size:10px
  }
  .settings legend span {
    font-size:9px
  }
}

@media(max-width:350px) {
  .app-shell {
    padding:0 10px
  }
  .workout {
    padding:16px 12px
  }
  .settings {
    padding:20px 16px
  }
  h1 {
    font-size:21px
  }
  .settings h2 {
    font-size:16px
  }
  .brand {
    font-size:16px
  }
  .weight-row label>span {
    font-size:8px
  }
}

.countdown-overlay { position:absolute; inset:5%; z-index:3; border-radius:50%; background:#f0f7ff; display:flex; flex-direction:column; align-items:center; justify-content:center; gap:10px; color:#347ddd; }
.countdown-overlay strong { font-size:80px; line-height:1.2; font-variant-numeric:tabular-nums; }
.countdown-overlay span { font-size:13px; }
.finish-button { width:100%; min-height:44px; border:1px solid #cbdce9; background:#fff; color:#476680; border-radius:10px; margin-top:10px; font-size:13px; }
.quick-options { display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:8px; margin-top:16px; padding:10px 12px; background:#f5f9fc; border-radius:10px; }
.quick-options label { display:flex; gap:8px; align-items:center; min-height:30px; font-size:12px; cursor:pointer; }
.quick-options span { font-size:10px; color:#62788b; }
input[type=checkbox] { width:20px; height:20px; accent-color:#347ddd; flex-shrink:0; }
.comfort-settings { border-top:1px solid #e2eaf1; padding:16px 0 0; font-size:12px; }
.comfort-settings summary { min-height:32px; font-weight:700; }
.option-row { display:flex; align-items:center; justify-content:space-between; gap:12px; margin:12px 0; min-height:44px; }
.option-row select { max-width:60%; font:inherit; font-size:16px; border:1px solid #cbdce9; border-radius:8px; background:white; color:#273c50; min-height:44px; padding:5px; }
.volume-label { display:flex; justify-content:space-between; margin-top:16px; }
#volume { width:100%; height:44px; accent-color:#347ddd; margin:0; }
.sound-preview { border:1px solid #cbdce9; border-radius:8px; padding:10px 16px; min-height:44px; color:#2869b7; background:#eff6ff; }
.storage-note { color:#62788b; font-size:10px; line-height:1.7; margin-bottom:0; }
.forget-settings { background:none; border:0; text-decoration:underline; font-size:10px; color:#62788b; padding:10px 0; min-height:44px; text-align:left; }
.forget-settings:disabled { opacity:.45; }
@media (max-width: 720px), (hover: none) and (pointer: coarse) {
  .audio-controls { display: none !important; }
}
.workout { align-self:start; }
.home-guide { max-width:760px; margin:40px auto; color:#476680; line-height:1.9; font-size:14px; }
.home-guide h2 { color:#273c50; font-size:clamp(19px,4.5vw,24px); line-height:1.6; }
.home-guide h3 { color:#273c50; font-size:17px; margin-top:24px; }
.home-guide ol { padding-left:1.5em; }
.home-guide li { margin:10px 0; }
.guide-start { display:inline-block; padding:12px 0; color:#2869b7; }
.faq details { border-top:1px solid #dce6ef; padding:14px 0; }
.faq summary { cursor:pointer; min-height:44px; align-content:center; color:#273c50; font-weight:700; }
.faq p { margin:10px 0; }
.history-panel { max-width:760px; margin:32px auto; padding:24px; font-size:14px; line-height:1.8; }
.history-panel h2 { font-size:22px; } .history-panel strong { display:block; font-variant-numeric:tabular-nums; } .history-table { width:100%; border-collapse:collapse; margin:20px 0; font-variant-numeric:tabular-nums; } .history-table caption { text-align:left; font-weight:700; margin-bottom:8px; } .history-table th,.history-table td { text-align:right; padding:8px 4px; border-bottom:1px solid #dce6ef; } .history-table th:first-child,.history-table td:first-child { text-align:left; } .history-panel summary { min-height:44px; cursor:pointer; } #history-list { padding-left:20px; } #history-list li { margin:10px 0; overflow-wrap:anywhere; }

/* Language navigation stays visible on small screens. */
.language-switch { display:flex; gap:.65rem; align-items:center; font-size:.85rem; flex-shrink:0; }
.language-switch a { padding:.35rem .45rem; border-radius:6px; }
.language-switch [aria-current="page"] { font-weight:700; background:#e5f2ed; }
html[lang="en"] .site-header { flex-wrap:wrap; gap:.7rem; }
html[lang="en"] .brand-en { display:none; }
html[lang="en"] .intro h1 { font-size:clamp(1.65rem,5vw,2.8rem); }
html[lang="en"] .stat-label { font-size:clamp(.65rem,2.8cqw,.9rem); }
html[lang="en"] .unit { font-size:.75rem; }
html[lang="en"] .forecast-values small { overflow-wrap:anywhere; }
@media(max-width:720px) { .site-header { flex-wrap:wrap; gap:.5rem; } .language-switch { margin-left:auto; } }