:root {
  color-scheme: light;
  --ink: #294b3b;
  --muted: #7c897e;
  --paper: #f7f8f2;
  --green: #3c684f;
  --line: #e4e9dd;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  font-synthesis: none;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 24px; }
body { margin: 0; color: var(--ink); background: var(--paper); -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; }
button:disabled { cursor: default; }
a, button { -webkit-tap-highlight-color: transparent; touch-action: manipulation; }
button, a { outline-offset: 5px; }
:focus-visible { outline: 3px solid #648f54; }
button { border: 0; }
[hidden] { display: none !important; }
.skip-link { position: fixed; z-index: 20; top: -100px; left: 20px; padding: 12px 18px; background: #fff; border-radius: 10px; }
.skip-link:focus { top: 12px; }
.site-header { max-width: 1184px; min-height: 98px; padding: 20px 32px; margin: auto; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: inline-flex; gap: 13px; align-items: center; }
.brand-mark { width: 46px; height: 46px; display: grid; place-items: center; background: #e4edcf; border-radius: 17px; color: #35624a; }
.brand-mark svg { width: 29px; height: 29px; }
.brand-name { font-size: 20px; font-weight: 750; letter-spacing: 1px; }
.brand-caption { display: block; margin-top: 4px; font-size: 10px; color: #798774; font-weight: 400; letter-spacing: 2px; }
.header-actions { display: flex; align-items: center; gap: 36px; font-size: 13px; }
.current-page { position: relative; font-weight: 700; }
.current-page::after { content: ""; width: 15px; height: 3px; border-radius: 2px; background: #b5cc97; position: absolute; left: calc(50% - 7.5px); bottom: -10px; }
.help-button { display: flex; align-items: center; gap: 8px; padding: 10px 12px; background: transparent; border-radius: 10px; }
.help-button:hover { background: #eaf0e2; }
.help-button > span { display: grid; place-items: center; border: 1.5px solid #91a18b; border-radius: 50%; width: 19px; height: 19px; font-size: 12px; }
main { max-width: 1184px; margin: 0 auto; padding: 0 32px; }
.welcome { min-height: 300px; position: relative; display: flex; overflow: hidden; isolation: isolate; border-radius: 28px; background: #e8eedc; border: 1px solid #e1e8d4; }
.welcome::before { content: ""; position: absolute; width: 500px; height: 500px; top: -380px; left: -160px; border: 1px solid #d4dfc9; border-radius: 50%; pointer-events: none; }
.welcome-copy { position: relative; z-index: 2; padding: 33px 44px 31px; width: 55%; }
.eyebrow { display: flex; align-items: center; gap: 8px; color: #607451; font-size: 11px; letter-spacing: 2px; }
.eyebrow > span { font-size: 15px; }
h1 { font-size: clamp(32px, 3.3vw, 43px); line-height: 1.35; letter-spacing: 2px; margin: 13px 0 11px; font-weight: 800; }
.title-accent { position: relative; white-space: nowrap; }
.title-accent::after { content: ""; position: absolute; z-index: -1; height: 11px; background: #d2dd9f; border-radius: 60%; left: -3px; right: 3px; bottom: 0; transform: rotate(-3deg); }
.welcome-copy > p { margin: 0; font-size: 13px; color: #63765d; line-height: 1.8; }
.browse-button { display: inline-flex; align-items: center; gap: 22px; background: var(--green); color: #fffdf5; font-size: 13px; font-weight: 600; border-radius: 11px; padding: 12px 17px; margin-top: 21px; box-shadow: 0 3px 0 #2d533d; transition: background .18s, transform .18s; }
.browse-button:hover { background: #2f5940; transform: translateY(-1px); }
.browse-button svg { width: 16px; height: 16px; stroke: currentColor; fill: none; stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.6; }
.welcome-art { position: absolute; right: 0; top: 0; width: 51%; height: 100%; pointer-events: none; }
.sun-disc { width: 340px; height: 340px; border-radius: 50%; background: #f5f5df; position: absolute; right: 48px; top: -10px; }
.hero-dino { width: 330px; height: 330px; object-fit: contain; position: absolute; right: 65px; top: -4px; z-index: 3; transform: rotate(4deg); }
.ground-shadow { position: absolute; z-index: 2; width: 220px; height: 24px; right: 106px; bottom: 8px; border-radius: 50%; background: #cdd8ac; filter: blur(9px); opacity: .55; }
.orbit { position: absolute; border: 1px solid #d5dfc4; border-radius: 50%; }
.orbit-one { width: 410px; height: 410px; right: 12px; top: -42px; }
.orbit-two { width: 480px; height: 480px; right: -24px; top: -77px; border-color: #dfe6d2; }
.flight-path { position: absolute; width: 100%; height: 240px; top: 33px; right: -11px; z-index: 1; fill: none; stroke: #bccb9e; stroke-dasharray: 4 8; stroke-linecap: round; stroke-width: 1.2; }
.flight-path .arrow { stroke-dasharray: none; }
.block-sticker { display: flex; align-items: center; gap: 8px; position: absolute; z-index: 4; padding: 13px 17px; border-radius: 10px; font-size: 14px; font-weight: 700; letter-spacing: .5px; box-shadow: 0 5px 0 #00000009, 0 8px 20px #2c44320c; }
.block-sticker::before { content: ""; width: 26px; height: 8px; background: inherit; position: absolute; top: -7px; left: 20px; border-radius: 5px 5px 0 0; }
.block-sticker::after { content: ""; position: absolute; width: 26px; height: 7px; left: 20px; bottom: -6px; background: inherit; border-radius: 0 0 5px 5px; }
.sticker-start { background: #fbdfa0; color: #725325; left: 3px; top: 76px; transform: rotate(-10deg); }
.flag { font-size: 22px; color: #69835d; line-height: 1; }
.sticker-repeat { background: #fffdf1; color: #688164; bottom: 43px; right: 14px; transform: rotate(9deg); font-size: 13px; padding: 11px 13px; }
.sticker-repeat b { border-radius: 10px; padding: 2px 9px; background: #e6edd9; font-size: 12px; }
.sticker-repeat > span { font-size: 19px; line-height: 1; }
.speech-bubble { position: absolute; z-index: 5; top: 39px; right: 29px; border-radius: 14px 14px 14px 2px; background: #fffdf5; color: #68805a; padding: 10px 13px; font-size: 11px; box-shadow: 0 4px 12px #56624005; transform: rotate(5deg); }
.speech-bubble > span { color: #da937a; margin-left: 7px; }
.star { position: absolute; z-index: 4; }
.star-one { font-size: 36px; left: 14px; bottom: 38px; color: #a8ba82; }
.star-two { font-size: 20px; right: 23px; top: 146px; color: #bbcb9d; }
.star-three { font-size: 16px; left: 175px; top: 28px; color: #bac99d; }
.adventures { padding-top: 36px; }
.section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; }
.section-kicker { color: #95a08c; font-size: 9px; letter-spacing: 2.7px; }
h2 { font-size: 23px; letter-spacing: .5px; font-weight: 750; margin: 7px 0 0; }
.total-count { display: inline-block; vertical-align: middle; position: relative; top: -1px; color: #78866b; border: 1px solid #e0e6d7; border-radius: 7px; padding: 3px 7px; margin-left: 9px; font-size: 10px; line-height: 1.4; letter-spacing: .5px; font-weight: 400; }
.list-hint { color: #8b9485; font-size: 11px; margin: 0 0 4px; }
.list-toolbar { margin: 22px 0 17px; display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 7px 16px; }
.filter-line { grid-column: 1; display: flex; align-items: center; gap: 15px; min-width: 0; }
.filter-label { color: #7b8972; font-size: 12px; flex-shrink: 0; }
.filters { display: flex; gap: 5px; }
.filters button { white-space: nowrap; flex-shrink: 0; background: transparent; border-radius: 9px; padding: 9px 17px; font-size: 13px; color: #63745a; transition: background .15s, color .15s; min-height: 38px; }
.filters button:hover { background: #eaf0e1; }
.filters button[aria-pressed="true"] { background: #e1eacc; color: #426339; font-weight: 700; }
.filter-symbol { display: inline-block; font-size: 15px; margin-right: 3px; font-weight: 400; }
.result-count { grid-column: 2; grid-row: 1; color: #8a9582; font-size: 11px; white-space: nowrap; }
.level-list { margin: 0; padding: 0; list-style: none; display: grid; gap: 12px; }
.level-row { display: grid; grid-template-columns: 30px 86px minmax(0, 1fr) auto; align-items: center; gap: 23px; padding: 18px 24px 18px 19px; background: #fffefa; border: 1px solid #e7eadf; border-radius: 19px; min-height: 124px; box-shadow: 0 3px 0 #e9eddf30; transition: border-color .18s, box-shadow .18s, transform .18s; }
.level-row:hover { border-color: #becfac; transform: translateY(-2px); box-shadow: 0 7px 18px #3b51260a; }
.level-number { align-self: center; text-align: center; color: #a0ab96; font-size: 17px; font-weight: 500; letter-spacing: 1px; font-variant-numeric: tabular-nums; }
.level-image { width: 86px; height: 86px; display: block; border-radius: 20px; object-fit: contain; background: var(--level-color); }
.level-topline { display: flex; flex-wrap: wrap; gap: 7px 10px; align-items: center; margin-bottom: 8px; }
.level-title { margin: 0; color: #2c4c3a; font-size: 18px; letter-spacing: .5px; font-weight: 700; }
.difficulty-badge { display: inline-flex; align-items: center; flex-shrink: 0; font-size: 10px; line-height: 1.5; padding: 2px 7px; border-radius: 6px; font-weight: 500; white-space: nowrap; }
.difficulty-easy { background: #edf3e4; color: #527446; }
.difficulty-medium { background: #fbefd8; color: #8b682e; }
.difficulty-hard { background: #f9e9e1; color: #9b5f48; }
.empty-state { text-align: center; padding: 35px 20px; border: 1px dashed #d7dfcb; background: #fffef9; border-radius: 19px; }
.empty-state > span { color: #a9bd86; font-size: 30px; }
.empty-state h3 { font-size: 17px; font-weight: 600; margin: 10px 0; }
.empty-state p { color: #7e8c73; font-size: 12px; line-height: 1.8; margin: 0 0 18px; }
.level-theme { color: #6f8063; font-size: 11px; padding-left: 13px; border-left: 1px solid #dfe5d7; white-space: nowrap; }
.level-description { margin: 0; font-size: 13px; color: #697962; line-height: 1.65; }
.skill-tags { display: flex; gap: 7px; margin-top: 9px; }
.skill-tags span { display: inline-flex; gap: 5px; align-items: center; font-size: 11px; color: #718065; }
.skill-tags span + span::before { content: "·"; padding-right: 3px; color: #bdc5b3; }
.skill-tags span:first-child::before { content: ""; height: 4px; width: 4px; border-radius: 50%; background: #b6c69d; margin-right: 2px; }
.play-button { display: inline-flex; align-items: center; justify-content: center; gap: 18px; color: #5b7650; background: #f0f4e7; border: 1px solid #e4ebd8; border-radius: 10px; padding: 12px 15px; font-size: 13px; font-weight: 600; white-space: nowrap; transition: color .18s, background .18s; }
.play-button svg { height: 14px; width: 14px; stroke-width: 1.6; fill: none; stroke: currentColor; stroke-linecap: round; stroke-linejoin: round; }
.level-row:hover .play-button { background: var(--green); color: #fff; border-color: var(--green); }
.end-note { padding: 28px 0 35px; display: flex; align-items: center; justify-content: center; gap: 19px; color: #b0bba3; }
.end-note > p { font-size: 11px; color: #95a08b; letter-spacing: 1px; margin: 0; }
.load-error { padding: 28px; border: 1px solid #e8ddc5; background: #fff7e7; border-radius: 14px; font-size: 14px; }
.load-error button { margin-left: 10px; border-radius: 8px; padding: 8px 12px; background: #e8eddc; }
dialog { width: min(480px, calc(100% - 32px)); padding: 35px; border: 1px solid #dce4d2; border-radius: 24px; color: var(--ink); background: #fffef8; box-shadow: 0 20px 80px #1c302433; }
dialog::backdrop { background: #263e3266; backdrop-filter: blur(4px); }
.dialog-close { position: absolute; right: 15px; top: 12px; background: transparent; font-size: 26px; font-weight: 300; color: #84917d; border-radius: 50%; width: 36px; height: 36px; }
.dialog-close:hover { background: #ecf0e4; }
.help-eyebrow { color: #94a37f; font-size: 12px; letter-spacing: 2px; }
dialog h2 { font-size: 23px; margin-top: 10px; }
.help-intro { color: #87927b; font-size: 12px; margin-top: 12px; }
.help-steps { display: grid; gap: 21px; padding: 10px 0 0; margin: 25px 0 30px; list-style: none; }
.help-steps li { display: flex; align-items: flex-start; gap: 15px; }
.help-steps li > span { background: #edf1de; color: #6b8554; border-radius: 12px; width: 35px; height: 35px; flex: 0 0 35px; display: grid; place-items: center; font-size: 14px; }
.help-steps h3 { font-size: 14px; margin: 0 0 6px; }
.help-steps p { font-size: 12px; line-height: 1.8; color: #7e8e76; margin: 0; }
.dialog-done { width: 100%; padding: 13px 18px; font-size: 13px; background: var(--green); color: #fff; border-radius: 11px; }
@media (min-width: 1400px) { .site-header { min-height: 112px; } .welcome { min-height: 320px; } .welcome-copy { padding-top: 39px; } .hero-dino { width: 350px; height: 350px; } .adventures { padding-top: 42px; } }
@media (max-width: 1000px) {
  .site-header { min-height: 88px; padding: 18px 25px; }
  main { padding: 0 25px; }
  .welcome-copy { padding: 30px; }
  .welcome-art { width: 49%; }
  .hero-dino { width: 330px; height: 330px; right: 8px; top: 12px; }
  .sun-disc { right: 0; }
  .orbit-one { right: -35px; }.orbit-two { right: -70px; }
  .ground-shadow { right: 62px; }
  .speech-bubble { right: 12px; top: 29px; }
  .sticker-start { left: 0; top: 95px; padding: 10px 12px; font-size: 11px; }
  .sticker-repeat { right: 9px; bottom: 26px; }
  .star-one { left: 8px; bottom: 29px; }
  .level-row { gap: 16px; grid-template-columns: 24px 78px minmax(0, 1fr) auto; padding: 16px 18px 16px 14px; }
  .level-image { width: 78px; height: 78px; border-radius: 17px; }
  .level-title { font-size: 17px; }.play-button { gap: 11px; padding: 11px 12px; }
  .list-hint { display: none; }
}
@media (max-width: 700px) {
  .site-header { padding: 17px 20px; min-height: 82px; }
  .brand-mark { width: 39px; height: 39px; border-radius: 14px; }.brand-mark svg { width: 25px; height: 25px; }
  .brand { gap: 10px; }.brand-name { font-size: 17px; }.brand-caption { font-size: 9px; letter-spacing: 1px; }
  .header-actions { gap: 0; }.current-page { display: none; }.help-button { padding: 8px 0 8px 8px; font-size: 12px; }
  main { padding: 0 18px; }.welcome { min-height: 260px; border-radius: 22px; }
  .welcome-copy { width: 67%; padding: 25px 23px; }.eyebrow { font-size: 9px; letter-spacing: 1px; gap: 5px; }
  h1 { font-size: 32px; line-height: 1.4; letter-spacing: 1px; margin-top: 12px; }
  .welcome-copy > p { font-size: 12px; max-width: 175px; }.browse-button { font-size: 11px; gap: 14px; padding: 11px 13px; margin-top: 17px; }
  .welcome-art { width: 48%; }.hero-dino { width: 254px; height: 254px; right: -41px; top: 37px; }.sun-disc { width: 245px; height: 245px; right: -58px; top: 21px; }
  .orbit-one { width: 300px; height: 300px; right: -86px; top: -7px; }.orbit-two { display: none; }.ground-shadow { width: 134px; right: 11px; bottom: 17px; }
  .sticker-start,.sticker-repeat,.flight-path { display: none; }.speech-bubble { font-size: 9px; right: 9px; top: 25px; padding: 8px 10px; }.star-one { font-size: 23px; bottom: 19px; left: 11px; }.star-two { font-size: 13px; right: 7px; top: 108px; }.star-three { display: none; }
  .adventures { padding-top: 29px; }.section-kicker { font-size: 8px; letter-spacing: 2px; }h2 { font-size: 20px; margin-top: 7px; }.total-count { font-size: 9px; margin-left: 4px; }
  .list-toolbar { margin: 18px 0 14px; gap: 8px; }.filter-line { gap: 9px; }.filter-label { font-size: 11px; }.result-count { justify-self: end; }.filters { gap: 3px; }.filters button { font-size: 12px; padding: 8px 13px; min-height: 38px; }.filter-symbol { font-size: 13px; margin-right: 1px; }.result-count { font-size: 10px; }
  .level-row { grid-template-columns: 69px minmax(0, 1fr) 28px; position: relative; gap: 13px; padding: 17px 13px; min-height: 115px; border-radius: 17px; }
  .level-number { position: absolute; left: 11px; top: 10px; z-index: 1; background: #fffdf7; color: #829474; border: 1px solid #e6ebdc; font-size: 9px; border-radius: 5px; padding: 2px 4px; box-shadow: 0 2px 4px #2b452508; }
  .level-image { width: 69px; height: 69px; border-radius: 15px; }.level-topline { margin-bottom: 6px; }.level-title { font-size: 16px; letter-spacing: 0; }.level-theme { display: none; }.level-description { font-size: 12px; line-height: 1.65; }.skill-tags { margin-top: 7px; gap: 5px; }.skill-tags span { font-size: 10px; }.skill-tags span + span::before { padding-right: 1px; }
  .play-button { border-radius: 50%; width: 28px; height: 28px; padding: 0; }.play-button > span { display: none; }.play-button svg { width: 12px; height: 12px; }
  .end-note { gap: 10px; padding: 27px 0 30px; }.end-note > p { font-size: 10px; letter-spacing: .5px; }
}
@media (max-width: 380px) {
  main { padding: 0 12px; }.site-header { padding-left: 14px; padding-right: 14px; }.welcome-copy { padding-left: 18px; }.welcome-art { right: -9px; }.hero-dino { right: -51px; }.speech-bubble { right: 13px; }.result-count { display: inline; }
  .filters button { padding-left: 10px; padding-right: 10px; }.level-row { gap: 10px; padding-left: 12px; padding-right: 10px; grid-template-columns: 59px minmax(0, 1fr) 25px; }.level-image { width: 59px; height: 59px; }.level-title { font-size: 15px; }.play-button { width: 25px; height: 25px; }h2 { font-size: 18px; }.total-count { font-size: 8px; }
}
@media (orientation: landscape) and (max-height: 500px) {
  .site-header { min-height: 65px; padding-top: 11px; padding-bottom: 11px; }.brand-mark { width: 37px; height: 37px; }.brand-name { font-size: 17px; }.brand-caption { font-size: 9px; }
  .welcome { min-height: 224px; }.welcome-copy { padding-top: 20px; padding-bottom: 21px; }h1 { font-size: 31px; line-height: 1.3; margin-top: 7px; margin-bottom: 8px; }.browse-button { margin-top: 13px; padding-top: 9px; padding-bottom: 9px; }.hero-dino { width: 282px; height: 282px; right: 40px; top: -14px; }.sun-disc { width: 280px; height: 280px; right: 42px; top: -15px; }.sticker-start { top: 76px; left: -6px; }.speech-bubble { top: 17px; }.ground-shadow { bottom: 0; }.sticker-repeat { bottom: 25px; }.adventures { padding-top: 25px; }
}
/* Task 6913: compact welcome banner, keeping the accepted artwork and list layout. */
.welcome { min-height: 238px; }
.welcome-copy { padding: 22px 36px; }
h1 { font-size: 32px; line-height: 1.25; margin: 8px 0; }
.browse-button { margin-top: 14px; padding-top: 10px; padding-bottom: 10px; }
.hero-dino { width: 254px; height: 254px; top: -5px; right: 88px; }
.sun-disc { width: 270px; height: 270px; right: 70px; top: -16px; }
.orbit-one { width: 330px; height: 330px; right: 40px; top: -46px; }
.orbit-two { width: 390px; height: 390px; right: 10px; top: -76px; }
.flight-path { height: 190px; top: 21px; }
.ground-shadow { width: 170px; right: 129px; bottom: 5px; }
.sticker-start { top: 53px; }
.sticker-repeat { bottom: 27px; }
.speech-bubble { top: 22px; }
.star-two { top: 110px; }
.adventures { padding-top: 28px; }
@media (max-width: 1000px) {
  .welcome-copy { padding-left: 28px; padding-right: 20px; }
  .hero-dino { right: 25px; }.sun-disc { right: 17px; }
  .orbit-one { right: -13px; }.orbit-two { right: -43px; }
  .ground-shadow { right: 67px; }.sticker-start { left: -4px; top: 62px; }
}
@media (max-width: 700px) {
  .welcome { min-height: 216px; }
  .welcome-copy { padding: 20px; width: 66%; }
  h1 { font-size: 28px; line-height: 1.25; margin: 8px 0; }
  .browse-button { margin-top: 12px; }
  .hero-dino { width: 205px; height: 205px; right: -30px; top: 33px; }
  .sun-disc { width: 210px; height: 210px; right: -35px; top: 17px; }
  .orbit-one { width: 265px; height: 265px; right: -62px; top: -10px; }
  .ground-shadow { width: 112px; right: 13px; bottom: 9px; }
  .speech-bubble { right: 8px; top: 14px; }
  .adventures { padding-top: 24px; }
}
@media (max-width: 380px) {
  .welcome-copy { padding-left: 17px; }
  .hero-dino { width: 184px; height: 184px; right: -28px; top: 51px; }
  .speech-bubble { right: 12px; }
}
@media (orientation: landscape) and (max-height: 500px) {
  .welcome { min-height: 166px; }
  .welcome-copy { padding: 16px 28px; width: 62%; }
  .welcome-copy .eyebrow { display: none; }
  h1 { font-size: 28px; margin: 0 0 7px; }
  h1 br { display: none; }
  .welcome-copy > p { max-width: none; }
  .browse-button { margin-top: 11px; padding-top: 9px; padding-bottom: 9px; }
  .welcome-art { width: 38%; }
  .hero-dino { width: 188px; height: 188px; right: 30px; top: -8px; }
  .sun-disc { width: 210px; height: 210px; right: 19px; top: -22px; }
  .orbit-one { width: 260px; height: 260px; right: -6px; top: -47px; }
  .orbit-two,.sticker-start,.sticker-repeat,.speech-bubble,.flight-path { display: none; }
  .ground-shadow { width: 122px; right: 63px; bottom: 0; }
  .star-one { bottom: 17px; }.star-three { display: none; }
  .adventures { padding-top: 20px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { transition: none !important; animation: none !important; }.level-row:hover, .browse-button:hover { transform: none; } }