@font-face{font-family:'Poppins';font-weight:400;font-style:normal;font-display:swap;src:url('../fonts/Poppins-Regular.ttf') format('truetype')}
@font-face{font-family:'Poppins';font-weight:500;font-style:normal;font-display:swap;src:url('../fonts/Poppins-Medium.ttf') format('truetype')}
@font-face{font-family:'Poppins';font-weight:600 700;font-style:normal;font-display:swap;src:url('../fonts/Poppins-Bold.ttf') format('truetype')}
:root {
  --surface: #ffffff;
  --surface-raised: #f5fafc;
  --text: #0a0a0a;
  --muted: #4b5a62;
  --primary: #01658b;
  --primary-hover: #014f6e;
  --border: #d5e3e9;
  --focus: #01658b;
  --bonus: #f2a33a;
  --sky: #9ad4e6;
  --danger: #b3261e;
  --success: #1f7a4d;
  --r-sm: 16px;
  --r-md: 20px;
  --r-lg: 24px;
  --touch: 44px;
  --press: 180ms;
  --sheet: 300ms;
  --screen: 350ms;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --font-head: 'Poppins', ui-rounded, 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue', Arial, sans-serif;
  --font-body: 'Quicksand', 'Poppins', ui-rounded, 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue', Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  min-height: 100dvh;
  background: var(--surface);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  background-image:
    radial-gradient(60rem 30rem at 85% -10%, rgba(154, 212, 230, 0.35), transparent 60%),
    radial-gradient(40rem 24rem at -10% 110%, rgba(242, 163, 58, 0.12), transparent 60%);
  background-attachment: fixed;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; border-radius: 8px; }
[hidden] { display: none !important; }

.skip { position: absolute; left: 8px; top: -60px; background: var(--primary); color: #fff; padding: 10px 16px; border-radius: var(--r-sm); z-index: 50; transition: top var(--press) var(--ease); }
.skip:focus { top: 8px; }

.display { font-family: var(--font-head); font-weight: 600; font-size: clamp(1.75rem, 5.5vw + 0.5rem, 3.25rem); line-height: 1.12; letter-spacing: -0.02em; margin: 0 0 0.5em; text-wrap: balance; outline: none; }
.display--sm { font-size: 1.5rem; }
.lead { color: var(--muted); font-size: 1.125rem; margin: 0 0 1.25rem; max-width: 52ch; }
.note { color: var(--muted); font-size: 0.95rem; margin: 0.75rem 0; }
.eyebrow { font-family: var(--font-head); font-size: 0.8rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--primary); margin: 0 0 0.75rem; }
.hint { color: var(--muted); font-size: 0.85rem; margin: 0; }

.shell { max-width: 72rem; margin: 0 auto; padding: 0 16px 48px; }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 16px 0; flex-wrap: wrap; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-family: var(--font-head); font-weight: 600; font-size: 1.15rem; color: var(--text); text-decoration: none; min-height: var(--touch); }
.topnav { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.topnav a { display: inline-flex; align-items: center; min-height: var(--touch); padding: 0 12px; border-radius: 999px; color: var(--text); text-decoration: none; transition: background var(--press) var(--ease); }
.topnav a:hover { background: var(--surface-raised); }
.select { min-height: var(--touch); border: 1px solid var(--border); border-radius: 999px; padding: 0 14px; background: var(--surface); font: inherit; color: var(--text); }
.page { padding-top: 8px; }
.hero { padding: 32px 0 24px; }

.cards { display: grid; gap: 16px; grid-template-columns: repeat(auto-fill, minmax(16rem, 1fr)); }
.card { position: relative; display: flex; flex-direction: column; gap: 10px; padding: 24px; border-radius: var(--r-lg); border: 1px solid var(--border); background: rgba(255, 255, 255, 0.72); backdrop-filter: blur(14px) saturate(1.4); -webkit-backdrop-filter: blur(14px) saturate(1.4); text-decoration: none; color: var(--text); transition: transform var(--press) var(--ease), box-shadow var(--sheet) var(--ease), border-color var(--press); animation: rise var(--screen) var(--ease) both; animation-delay: calc(var(--i) * 60ms); }
.card:hover { transform: translateY(-3px); border-color: var(--sky); box-shadow: 0 18px 40px -22px rgba(1, 101, 139, 0.45); }
.card:active { transform: scale(0.98); }
.card__title { font-family: var(--font-head); font-weight: 600; font-size: 1.3rem; margin: 6px 0 0; }
.card__meta { margin: 0; color: var(--muted); font-size: 0.95rem; }
.card__go { margin-top: auto; padding-top: 8px; font-family: var(--font-head); font-weight: 500; color: var(--primary); }
.banner { display: flex; justify-content: space-between; align-items: center; margin-top: 24px; padding: 16px 20px; min-height: var(--touch); border-radius: var(--r-md); background: var(--surface-raised); border: 1px solid var(--border); text-decoration: none; font-weight: 600; }

.badge { display: inline-flex; align-self: flex-start; align-items: center; min-height: 24px; padding: 0 10px; border-radius: 999px; font-family: var(--font-head); font-size: 0.72rem; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; background: rgba(154, 212, 230, 0.45); color: var(--primary-hover); }
.badge--demo { background: var(--text); color: #fff; }
.chip { display: inline-flex; align-self: flex-start; align-items: center; min-height: 32px; padding: 0 14px; border-radius: 999px; background: var(--surface-raised); border: 1px solid var(--border); font-weight: 600; font-size: 0.95rem; margin: 0 0 1rem; }
.chip--bonus { background: rgba(242, 163, 58, 0.18); border-color: var(--bonus); color: var(--text); margin: 0; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: var(--touch); min-width: var(--touch); padding: 0 24px; border-radius: 999px; border: 1.5px solid transparent; font: 600 1rem var(--font-head); cursor: pointer; text-decoration: none; transition: transform var(--press) var(--ease), background var(--press), box-shadow var(--press), opacity var(--press); }
.btn:active:not(:disabled) { transform: scale(0.96); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn--primary { background: var(--primary); color: #fff; box-shadow: 0 10px 24px -14px rgba(1, 101, 139, 0.8); }
.btn--primary:hover:not(:disabled) { background: var(--primary-hover); box-shadow: 0 14px 28px -14px rgba(1, 101, 139, 0.9); }
.btn--ghost { background: transparent; color: var(--primary); border-color: var(--border); }
.btn--ghost:hover:not(:disabled) { background: var(--surface-raised); }
.icon-btn { width: var(--touch); height: var(--touch); border-radius: 50%; border: 1px solid var(--border); background: var(--surface); font-size: 1.5rem; line-height: 1; cursor: pointer; color: var(--text); transition: transform var(--press) var(--ease), background var(--press); }
.icon-btn:hover { background: var(--surface-raised); }
.icon-btn:active { transform: scale(0.92); }
.row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.row--center { justify-content: center; }

.guides { display: grid; gap: 16px; margin: 24px 0; grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr)); }
.guide { padding: 24px; border-radius: var(--r-lg); border: 1px solid var(--border); background: var(--surface); display: flex; flex-direction: column; gap: 8px; }
.guide--current { border-color: var(--primary); background: var(--surface-raised); }
.guide__title { font-family: var(--font-head); font-size: 1.1rem; margin: 0; }
.steps { margin: 0; padding-left: 1.2rem; display: grid; gap: 8px; }

.player { min-height: 100dvh; display: flex; flex-direction: column; max-width: 76rem; margin: 0 auto; padding: 0 16px; }
.player__bar { display: flex; align-items: center; gap: 12px; padding: 12px 0; position: sticky; top: 0; z-index: 5; background: rgba(255, 255, 255, 0.85); box-shadow: 0 0 0 100vmax rgba(255, 255, 255, 0.85); clip-path: inset(0 -100vmax); }
.player__count { font-family: var(--font-head); font-size: 0.8rem; color: var(--muted); min-width: 3ch; }
.progress { flex: 1; height: 6px; border-radius: 999px; background: var(--surface-raised); border: 1px solid var(--border); overflow: hidden; }
.progress__fill { height: 100%; width: 100%; transform-origin: left; transform: scaleX(0.02); background: var(--primary); border-radius: 999px; transition: transform var(--screen) var(--ease); }
.player[data-phase='start'] .progress, .player[data-phase='start'] .player__count, .player[data-phase='submitting'] .progress { visibility: hidden; }
.player__main { flex: 1; display: flex; align-items: center; padding: 16px 0 24px; }
.stage-wrap { width: 100%; }
.enter-forward { animation: in-forward var(--screen) var(--ease) both; }
.enter-back { animation: in-back var(--screen) var(--ease) both; }
.player__actions { position: sticky; bottom: 0; display: flex; align-items: center; gap: 12px; padding: 14px 0 calc(14px + env(safe-area-inset-bottom)); background: rgba(255, 255, 255, 0.85); box-shadow: 0 0 0 100vmax rgba(255, 255, 255, 0.85); clip-path: inset(0 -100vmax); }
.player__actions .btn--primary { margin-left: auto; }
.player[data-phase]:not([data-phase='question']) .player__actions { display: none; }
.hint--keys { display: none; }
.panel { display: flex; flex-direction: column; align-items: flex-start; gap: 4px; max-width: 40rem; margin: 0 auto; }
.panel--center { align-items: center; text-align: center; }
.panel .row { margin-top: 12px; }

.stage { display: grid; gap: 24px; width: 100%; max-width: 44rem; margin: 0 auto; }
.stage__media { margin: 0; order: -1; border-radius: var(--r-lg); overflow: hidden; border: 1px solid var(--border); background: var(--surface-raised); }
.stage__media img { width: 100%; max-height: 28vh; object-fit: contain; }
.shake { animation: shake 360ms var(--ease); }

.choices { display: grid; gap: 10px; margin-top: 8px; }
.choices--images { grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr)); }
.choice { display: flex; flex-direction: column; align-items: stretch; gap: 10px; min-height: var(--touch); padding: 12px 16px; text-align: left; font: 500 1.05rem var(--font-body); color: var(--text); background: rgba(255, 255, 255, 0.7); border: 1.5px solid var(--border); border-radius: var(--r-sm); cursor: pointer; backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); transition: transform var(--press) var(--ease), border-color var(--press), background var(--press), box-shadow var(--press); }
.choice:hover { border-color: var(--sky); background: var(--surface-raised); }
.choice:active { transform: scale(0.98); }
.choice.is-selected { border-color: var(--primary); background: rgba(154, 212, 230, 0.28); box-shadow: 0 0 0 1px var(--primary) inset; }
.choice__row { display: flex; align-items: center; gap: 12px; }
.choice__img { border-radius: 12px; background: var(--surface-raised); }
.keycap { display: inline-flex; align-items: center; justify-content: center; min-width: 26px; height: 26px; border-radius: 8px; border: 1px solid var(--border); background: var(--surface); font: 600 0.78rem var(--font-head); color: var(--primary); flex: none; }
.choice.is-selected .keycap { background: var(--primary); border-color: var(--primary); color: #fff; }

.scale__row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.scale__btn { flex: 1 1 var(--touch); min-width: var(--touch); min-height: var(--touch); border-radius: var(--r-sm); border: 1.5px solid var(--border); background: rgba(255, 255, 255, 0.7); font: 600 1.05rem var(--font-head); color: var(--text); cursor: pointer; transition: transform var(--press) var(--ease), background var(--press), border-color var(--press), color var(--press); }
.scale__btn:hover { border-color: var(--sky); background: var(--surface-raised); }
.scale__btn:active { transform: scale(0.93); }
.scale__btn.is-selected { background: var(--primary); border-color: var(--primary); color: #fff; }
.scale__labels { display: flex; justify-content: space-between; gap: 12px; margin-top: 8px; font-size: 0.85rem; color: var(--muted); }
.matrix { display: grid; gap: 18px; }
.matrix__label { display: block; font-weight: 600; }
.matrix .scale__labels { margin: 0; }

.rank { list-style: none; margin: 8px 0 0; padding: 0; display: grid; gap: 10px; }
.rank__item { display: flex; align-items: center; gap: 12px; min-height: 56px; padding: 6px 8px 6px 14px; border: 1.5px solid var(--border); border-radius: var(--r-sm); background: rgba(255, 255, 255, 0.7); animation: rise var(--press) var(--ease) both; }
.rank__n { font: 600 0.85rem var(--font-head); color: var(--primary); width: 1.5ch; }
.rank__label { flex: 1; font-weight: 500; }
.rank__btn { width: var(--touch); height: var(--touch); border-radius: 12px; border: 1px solid var(--border); background: var(--surface); font-size: 1.1rem; cursor: pointer; transition: transform var(--press) var(--ease), background var(--press); }
.rank__btn:hover:not(:disabled) { background: var(--surface-raised); }
.rank__btn:active:not(:disabled) { transform: scale(0.9); }
.rank__btn:disabled { opacity: 0.3; cursor: not-allowed; }

.field { position: relative; margin-top: 8px; }
.field__control { width: 100%; min-height: 56px; padding: 12px 4px; border: 0; border-bottom: 2px solid var(--border); border-radius: 0; background: transparent; font: 500 1.5rem var(--font-body); color: var(--text); transition: border-color var(--press); resize: vertical; }
textarea.field__control { font-size: 1.15rem; border: 2px solid var(--border); border-radius: var(--r-sm); padding: 14px; }
.field__control:focus { outline: none; border-color: var(--primary); }
.field__control::placeholder { color: #7a8a92; }
.field__count { position: absolute; right: 8px; bottom: -22px; font-size: 0.8rem; color: var(--muted); }
.error { min-height: 1.5em; margin: 6px 0 0; color: var(--danger); font-weight: 600; font-size: 0.95rem; }

.bonus-card { display: flex; flex-direction: column; align-items: center; gap: 4px; margin: 16px 0 8px; padding: 24px 32px; border-radius: var(--r-lg); background: linear-gradient(145deg, rgba(242, 163, 58, 0.28), rgba(255, 255, 255, 0.7)); border: 1.5px solid var(--bonus); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); animation: pop var(--screen) var(--ease) both 150ms; }
.bonus-card__label { font: 600 0.8rem var(--font-head); letter-spacing: 0.08em; text-transform: uppercase; }
.bonus-card__value { font: 700 3rem var(--font-head); line-height: 1.1; }
.bonus-card__body { color: var(--muted); font-size: 0.95rem; }
.tick { width: 64px; height: 64px; border-radius: 50%; display: grid; place-items: center; background: var(--primary); color: #fff; font-size: 2rem; margin-bottom: 12px; animation: pop var(--screen) var(--ease) both; }
.spinner { width: 36px; height: 36px; border-radius: 50%; border: 3px solid var(--sky); border-top-color: var(--primary); animation: spin 0.8s linear infinite; margin-bottom: 12px; }

.sheet { width: min(32rem, calc(100% - 24px)); margin: auto auto 12px; padding: 28px; border: 1px solid rgba(255, 255, 255, 0.7); border-radius: var(--r-lg); background: rgba(255, 255, 255, 0.78); backdrop-filter: blur(22px) saturate(1.5); -webkit-backdrop-filter: blur(22px) saturate(1.5); box-shadow: 0 30px 80px -30px rgba(1, 101, 139, 0.5); color: var(--text); }
.sheet[open] { animation: sheet-in var(--sheet) var(--ease) both; }
.sheet::backdrop { background: rgba(10, 10, 10, 0.32); backdrop-filter: blur(4px); }
.sheet__title { font: 600 1.4rem var(--font-head); margin: 0 0 8px; }

.offline { position: fixed; left: 50%; bottom: 16px; transform: translateX(-50%); z-index: 60; padding: 10px 18px; border-radius: 999px; background: var(--text); color: #fff; font-size: 0.9rem; }

@keyframes rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
@keyframes in-forward { from { opacity: 0; transform: translateY(28px); } to { opacity: 1; transform: none; } }
@keyframes in-back { from { opacity: 0; transform: translateY(-28px); } to { opacity: 1; transform: none; } }
@keyframes pop { from { opacity: 0; transform: scale(0.85); } to { opacity: 1; transform: none; } }
@keyframes shake { 20%, 60% { transform: translateX(-6px); } 40%, 80% { transform: translateX(6px); } }
@keyframes sheet-in { from { opacity: 0; transform: translateY(32px); } to { opacity: 1; transform: none; } }
@keyframes spin { to { transform: rotate(360deg); } }

@media (min-width: 900px) {
  .hint--keys { display: inline; }
  .stage--split_left, .stage--split_right { max-width: 72rem; grid-template-columns: 1fr 1fr; align-items: center; gap: 56px; }
  .stage--split_left .stage__media { order: -1; }
  .stage--split_right .stage__media { order: 1; }
  .stage__media img { max-height: 60vh; }
  .stage--stacked { max-width: 48rem; }
  .player__actions .btn--primary { margin-left: 0; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}