:root{--paper:#efe9b8;--light:#fbfaf2;--ink:#171612;--muted:#756f5e;--line:2px solid var(--ink);--shadow:5px 5px 0 #17161222;--star:#f2c230;--star-muted:#e6dfb9}*{box-sizing:border-box}html{font-size:16px;touch-action:manipulation}body{margin:0;background:var(--paper);color:var(--ink);font-family:"Noto Sans TC","Noto Sans JP",system-ui,sans-serif}a,a:visited,button,select,input,textarea{color:var(--ink)}[x-apple-data-detectors]{color:inherit!important;text-decoration:none!important}input,select,textarea{font-size:16px}.paper{position:fixed;inset:0;pointer-events:none;opacity:.18;background-image:radial-gradient(#786f4d 0.7px,transparent .7px);background-size:8px 8px}.shell{width:min(1080px,calc(100% - 28px));margin:auto}header{position:sticky;top:0;z-index:20;min-height:72px;padding:10px max(14px,env(safe-area-inset-right)) 10px max(14px,env(safe-area-inset-left));display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:16px;border-bottom:var(--line);background:#fbfaf2ee;backdrop-filter:blur(10px)}.brand{display:flex;align-items:center;gap:10px;color:inherit;text-decoration:none;white-space:nowrap}.brand-cat{width:44px;height:44px;display:block;object-fit:contain}.brand span{display:flex;flex-direction:column}.brand b{font-size:1.15rem}.brand small{font-size:.63rem;letter-spacing:.12em}header nav{display:flex;justify-content:center;gap:18px}header nav a{color:inherit;text-decoration:none;font-weight:800}.lang-wrap{position:relative}.lang-button{min-height:40px;padding:7px 11px;border:var(--line);border-radius:10px;background:#fff;font-weight:900}.lang-menu{position:absolute;right:0;top:46px;min-width:130px;padding:6px;border:var(--line);border-radius:10px;background:#fff;box-shadow:var(--shadow)}.lang-menu button{width:100%;padding:8px;border:0;background:transparent;text-align:left;font-weight:800}.home{position:relative;min-height:calc(100vh - 72px);padding:8vh 0 50px}.hero{max-width:700px}.eyebrow{margin:0 0 10px;font-size:.8rem;font-weight:900;letter-spacing:.18em;text-transform:uppercase;color:var(--muted)}h1{margin:0 0 14px;font-size:clamp(2rem,7vw,5rem);line-height:1.02}h1 small{display:block;margin-top:8px;font-size:.22em;letter-spacing:.3em}.hero>p:last-child{max-width:580px;font-size:1.05rem;line-height:1.75}.mode-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:38px 0 22px}.mode-card{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:16px;padding:22px;border:var(--line);border-radius:18px;background:var(--light);box-shadow:var(--shadow);color:inherit;text-decoration:none}.mode-card .mode-icon{font-size:2rem}.mode-card div{display:flex;flex-direction:column}.mode-card small{font-weight:800;color:var(--muted)}.mode-card b{font-size:1.35rem}.mode-card em{font-style:normal;color:var(--muted)}.button{display:inline-flex;justify-content:center;align-items:center;min-height:46px;padding:10px 18px;border:var(--line);border-radius:12px;background:var(--ink);color:#fff;text-decoration:none;font-weight:900}.button.secondary{background:var(--light);color:var(--ink)}.page{position:relative;padding:42px 0 60px}.page-intro h1{font-size:clamp(2rem,6vw,4rem)}.progress{display:flex;align-items:center;gap:12px;max-width:430px}.progress>span{height:10px;flex:1;border:1px solid var(--ink);border-radius:99px;background:#fff;overflow:hidden}.progress i{display:block;width:0;height:100%;background:var(--ink)}.filters{display:flex;justify-content:space-between;gap:12px;margin:32px 0 18px}.tabs{display:flex;gap:8px}.tabs button,.filters select{min-height:42px;padding:8px 13px;border:var(--line);border-radius:10px;background:#fff;font-weight:900}.tabs button.active{background:var(--ink);color:#fff}.puzzle-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.puzzle-card{display:block;overflow:hidden;border:var(--line);border-radius:16px;background:var(--light);box-shadow:var(--shadow);color:inherit;text-decoration:none}.thumb{aspect-ratio:1;background:#fff}.thumb img{display:block;width:100%;height:100%;object-fit:contain}.card-stars{display:flex;justify-content:center;gap:8px;padding:12px;font-size:1.65rem;color:var(--star-muted)}.card-stars i{font-style:normal}.card-stars i.active{color:var(--star)}.empty{text-align:center;padding:40px;border:2px dashed #756f5e}.detail{position:relative;padding:22px 0 60px}.back{display:inline-block;margin-bottom:14px;color:inherit;font-weight:900;text-decoration:none}.detail-card{max-width:760px;margin:auto}.detail-image{aspect-ratio:1;border:var(--line);border-radius:18px;background:#fff;overflow:hidden;box-shadow:var(--shadow)}.detail-image img{width:100%;height:100%;object-fit:contain}.star-row{display:grid;grid-template-columns:1fr;justify-items:center;gap:6px;padding:18px}.star-picker{display:flex;justify-content:center;gap:10px}.star-picker button{width:58px;height:58px;padding:0;border:0;background:transparent;color:var(--star-muted);font-size:3.2rem;line-height:1}.star-picker button.active{color:var(--star)}#starText{min-height:1.5em;text-align:center;font-weight:900}.answer-box{border:var(--line);border-radius:14px;background:var(--light);overflow:hidden}.answer-box>button{width:100%;min-height:54px;padding:12px 16px;display:flex;justify-content:space-between;border:0;background:transparent;font-size:1rem;font-weight:900}.answer-box>div{padding:0 16px 16px}.answer-box pre{margin:0;white-space:pre-wrap;font:inherit;line-height:1.7}.detail-nav{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:16px}.rules{position:relative}.rules>h1{font-size:clamp(2rem,6vw,4rem)}.rules ol{list-style:none;padding:0;display:grid;gap:14px}.rules li{display:flex;gap:16px;padding:18px;border:var(--line);border-radius:14px;background:var(--light)}.rules li>b{width:42px;height:42px;display:grid;place-items:center;border-radius:50%;background:var(--ink);color:#fff}.rules h2,.rules p{margin:0}.rules aside{margin-top:20px;padding:18px;border:var(--line);border-radius:14px;background:#fff}.mode-subtitle{margin:-4px 0 18px;color:var(--muted);font-size:.92rem;font-weight:900}.puzzle-list-section{margin-top:28px}.home-back{margin-bottom:24px}.daily-intro{max-width:640px}@media(max-width:760px){header{grid-template-columns:1fr auto}header nav{display:none}.brand-cat{width:42px;height:42px}.mode-grid{grid-template-columns:1fr}.puzzle-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.filters{align-items:stretch;flex-direction:column}.filters select{width:100%}.tabs button{flex:1}.star-picker button{width:54px;height:54px;font-size:3rem}}@media(max-width:370px){.shell{width:min(100% - 20px,1080px)}.brand-cat{width:40px;height:40px}.brand b{font-size:1.02rem}.lang-button{padding:6px 8px}.puzzle-grid{gap:10px}.card-stars{gap:5px;font-size:1.45rem}}