.b12{--paper:#fbf3e4;--paper-deep:#f6e4c6;--ink:#1d1512;--ink-soft:#4a453d;--seal:#c8200e;--seal-deep:#8f1409;--bamboo:#2e6b3b;--bamboo-bright:#3a9a4a;--gold:#e8912d;--rule:#e6cda6}.b12 *{box-sizing:border-box}.b12{scroll-behavior:smooth;overflow-anchor:none;margin:0;background:var(--paper);background-image:radial-gradient(ellipse at 20% 10%,rgba(181,50,42,.05),transparent 40%),radial-gradient(ellipse at 80% 90%,rgba(75,90,60,.06),transparent 45%);color:var(--ink);font-family:Noto Sans,Noto Sans SC,sans-serif;line-height:1.6}.b12:before{content:"";position:fixed;inset:0;pointer-events:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");z-index:1}.b12 .wrap{max-width:960px;margin:0 auto;padding:0 24px 120px}.b12 header.hero{padding:56px 24px 48px;text-align:center;border-bottom:1px solid var(--rule);overflow:hidden}.b12 .date-tag{font-size:.75rem;letter-spacing:.18em;color:var(--ink-soft);margin-bottom:28px}.b12 .seal-box{width:88px;height:88px;margin:0 auto 22px;border:3px solid var(--seal);border-radius:6px;display:flex;align-items:center;justify-content:center;color:var(--seal);font-family:"Noto Serif SC",serif;font-weight:900;font-size:1.5rem;transform:rotate(-3deg);box-shadow:0 0 0 1px rgba(181,50,42,.15);position:relative}.b12 .seal-box:after{content:"";position:absolute;inset:6px;border:1px solid var(--seal);border-radius:3px;opacity:.5}.b12 h1.cn{font-family:"Noto Serif SC",serif;font-weight:900;font-size:clamp(1.8rem,6vw,3rem);color:var(--ink);margin:0 0 6px;letter-spacing:.02em}.b12 .pinyin-line{font-size:1rem;color:var(--seal);font-style:italic;margin-bottom:6px}.b12 .subtitle{font-size:1rem;color:var(--ink-soft)}.b12 .subtitle strong{color:var(--bamboo);font-weight:700}.b12 .brush-rule{width:140px;height:3px;margin:26px auto 0;background:linear-gradient(90deg,transparent,var(--seal) 20%,var(--seal) 80%,transparent);border-radius:2px;opacity:.8}.b12 .voice-picker{display:flex;align-items:center;justify-content:center;gap:8px;flex-wrap:wrap;margin-top:14px;font-size:.82rem;color:var(--ink-soft)}.b12 .voice-picker select{font-family:Noto Sans,sans-serif;font-size:.82rem;padding:5px 10px;border:1px solid var(--rule);border-radius:4px;background:var(--paper-deep);color:var(--ink);max-width:260px}.b12 .vp-status{font-weight:700}.b12 .vp-status.ok{color:var(--bamboo)}.b12 .vp-status.warn{color:var(--seal)}.b12 .back-link{display:inline-block;margin:14px 0 0 14px;font-size:.85rem;color:var(--ink-soft);text-decoration:none;border:1px solid var(--seal);border-radius:6px;padding:4px 10px}.b12 .back-link:hover{color:var(--seal);background:var(--paper-deep)}.b12 .lesson-nav{display:flex;justify-content:center;align-items:center;gap:14px;flex-wrap:wrap;padding:32px 24px 0}.b12 .prev-link{display:inline-block;font-size:.9rem;color:var(--ink-soft);text-decoration:none;border:1px solid var(--rule);border-radius:6px;padding:8px 16px;font-weight:700}.b12 .prev-link:hover{color:var(--seal-deep);border-color:var(--seal);background:var(--paper-deep)}.b12 .next-link{display:inline-block;font-size:.9rem;color:var(--seal-deep);text-decoration:none;border:1px solid var(--seal);border-radius:6px;padding:8px 16px;font-weight:700}.b12 .next-link:hover{color:var(--paper);background:var(--seal)}.b12 footer.pagefoot-note{text-align:center;padding:18px 24px 0;color:var(--ink-soft);font-size:.8rem;letter-spacing:.04em}.b12 .toc{border:1px solid var(--rule);border-radius:6px;background:var(--paper-deep);padding:18px 22px;margin:28px 0 26px}.b12 .toc-title{font-weight:700;color:var(--seal);font-size:.85rem;margin-bottom:12px}.b12 .toc-list{list-style:none;margin:0;padding:0;display:grid;gap:8px}.b12 .toc-list a{display:flex;align-items:baseline;gap:10px;text-decoration:none;color:var(--ink);padding:2px 0}.b12 .toc-list a:hover .toc-cn,.b12 .toc-list a:hover .toc-vn{color:var(--seal)}.b12 .toc-sub{list-style:none;margin:4px 0 4px 2.4em;display:grid;gap:4px;border-left:2px solid var(--rule);padding:0 0 0 10px}.b12 .toc-sub a{display:block;font-size:.84rem;color:var(--ink-soft);padding:1px 0}.b12 .toc-sub a:hover{color:var(--seal)}.b12 .sub-head[id]{scroll-margin-top:16px}.b12 .toc-num{font-weight:700;color:var(--seal);min-width:1.8em;flex-shrink:0}.b12 .toc-cn{font-family:"Noto Serif SC",serif;font-weight:600;flex-shrink:0}.b12 .toc-vn{color:var(--ink-soft);font-size:.88rem}.b12 section{position:relative;padding:56px 0 8px;scroll-margin-top:20px}.b12 section+section{border-top:1px solid var(--rule)}.b12 .sec-head{display:flex;align-items:baseline;gap:16px;margin-bottom:30px}.b12 .sec-num{font-size:2.4rem;font-weight:900;color:var(--seal);line-height:1}.b12 .sec-num,.b12 .sec-title-cn{font-family:"Noto Serif SC",serif}.b12 .sec-title-cn{font-size:1.6rem;font-weight:600;color:var(--ink)}.b12 .sec-title-py{font-size:.8rem;color:var(--seal);font-style:italic;margin:1px 0 2px}.b12 .sec-title-vn{font-size:.95rem;color:var(--ink-soft);font-style:italic}.b12 .pin-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px;margin-bottom:28px}.b12 .pin-card{position:relative;background:#fff;border:1px solid var(--rule);border-radius:4px;padding:20px 12px 14px;text-align:center;box-shadow:0 2px 6px rgba(33,30,25,.08),0 1px 0 rgba(33,30,25,.04);transform:rotate(var(--tilt,0deg));transition:transform .15s ease,box-shadow .15s ease}.b12 .pin-card:hover{transform:rotate(0deg) translateY(-2px);box-shadow:0 8px 18px rgba(33,30,25,.12)}.b12 .pin-card:before{content:"";position:absolute;top:6px;left:50%;transform:translateX(-50%);width:11px;height:11px;border-radius:50%;background:var(--pin-color,var(--seal));box-shadow:0 1px 2px rgba(0,0,0,.35)}.b12 .pin-card .emoji{font-size:1.2rem;line-height:1;display:block;margin-top:8px}.b12 .pin-card .hz{font-family:"Noto Serif SC",serif;font-size:1.55rem;font-weight:700;color:var(--ink);display:inline-block;margin-top:2px}.b12 .pin-card .py{font-size:.8rem;color:var(--ink-soft);display:block;margin-top:4px}.b12 .pin-card .vn{font-size:.82rem;color:var(--bamboo);font-weight:600;margin-top:3px;display:block}.b12 .sentence-stack{display:flex;flex-direction:column;gap:8px;margin:0 auto}.b12 .sentence-card{background:var(--paper-deep);border:1px solid var(--rule);border-radius:10px;padding:12px 16px;text-align:center}.b12 .sentence-card.speaker-a{border-left:4px solid var(--seal);border-radius:0 10px 10px 10px}.b12 .sentence-card.speaker-b{border-left:4px solid var(--bamboo);border-radius:0 10px 10px 10px}.b12 .sentence-hz{font-family:"Noto Serif SC",serif;font-size:1.35rem;font-weight:700;color:var(--ink)}.b12 .sentence-hz .hl{color:var(--seal)}.b12 .sentence-py{font-size:.82rem;color:var(--seal);font-style:italic;margin-top:2px}.b12 .sentence-vn{font-size:.88rem;color:var(--ink-soft);margin-top:2px}.b12 .sub-head{margin-top:36px;margin-bottom:16px}.b12 .sub-head .t{font-family:"Noto Serif SC",serif;font-size:1.1rem;font-weight:700;color:var(--ink)}.b12 .sub-head .d{font-size:.82rem;color:var(--ink-soft);margin-left:10px}.b12 .hz-story{border-left:3px solid var(--bamboo);background:rgba(75,90,60,.06);border-radius:0 6px 6px 0;padding:12px 16px;margin-bottom:14px}.b12 .hz-parts{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:8px}.b12 .hz-parts .part{font-family:"Noto Serif SC",serif;font-weight:700;color:var(--bamboo);background:var(--paper-deep);border:1px solid var(--rule);border-radius:4px;padding:4px 10px;font-size:1rem}.b12 .hz-parts .part i{font-family:inherit;font-style:italic;font-weight:400;color:var(--ink-soft);font-size:.78rem;margin-left:4px}.b12 .hz-parts .plus{color:var(--seal);font-weight:900}.b12 .hz-story p{margin:0;font-size:.9rem;color:var(--ink-soft);line-height:1.65}.b12 .char-steps{background:#fff;border:1px solid var(--rule);border-radius:4px;padding:24px 26px;margin-bottom:20px;box-shadow:0 2px 6px rgba(33,30,25,.08),0 1px 0 rgba(33,30,25,.04)}.b12 .char-steps-title{display:flex;flex-direction:column;align-items:center;gap:6px;text-align:center;margin-bottom:14px;padding-bottom:14px;border-bottom:1px dashed var(--rule)}.b12 .char-steps-title .big{font-family:"Noto Serif SC",serif;font-size:3rem;font-weight:700;line-height:1.1;color:var(--seal)}.b12 .char-steps-title .meta{font-size:1rem;color:var(--ink-soft)}.b12 .hw-box{display:flex;flex-direction:column;align-items:center;gap:10px}.b12 .hw-target{width:150px;height:150px;background-color:var(--paper-deep);background-image:linear-gradient(var(--rule) 1px,transparent 1px),linear-gradient(90deg,var(--rule) 1px,transparent 1px),linear-gradient(var(--rule) .5px,transparent .5px),linear-gradient(90deg,var(--rule) .5px,transparent .5px);background-size:75px 75px,75px 75px,25px 25px,25px 25px;border:2px solid var(--seal);border-radius:4px}.b12 .hw-controls-row{display:flex;gap:8px}.b12 .hw-replay{font-size:.92rem;padding:7px 16px;border:1px solid var(--rule);border-radius:6px;background:var(--paper);color:var(--ink);cursor:pointer;font-family:Noto Sans,sans-serif}.b12 .hw-replay:hover{background:var(--paper-deep)}.b12 .quiz-btn{border-color:var(--seal);color:var(--seal)}.b12 .hw-quiz-status{font-size:.92rem;color:var(--bamboo);min-height:1.2em}.b12 .fcg{max-width:460px;margin:0 auto;text-align:center}.b12 .fcg-top{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:12px;flex-wrap:wrap}.b12 .fcg-dir{display:inline-flex;border:1px solid var(--rule);border-radius:999px;overflow:hidden;background:#fffdf6}.b12 .fcg-dir button{border:0;background:transparent;padding:6px 14px;font-size:.82rem;cursor:pointer;color:var(--ink-soft);font-family:inherit}.b12 .fcg-dir button.on{background:var(--seal);color:#fff;font-weight:700}.b12 .fcg-score{font-size:.85rem;font-weight:700;color:var(--ink-soft)}.b12 .fcg-score b.ok{color:var(--bamboo-bright)}.b12 .fcg-score b.no{color:var(--seal)}.b12 .fcg-bar{height:8px;background:var(--paper-deep);border-radius:99px;overflow:hidden;margin-bottom:18px}.b12 .fcg-bar i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--gold),var(--seal));border-radius:99px;transition:width .35s ease}.b12 .fcg-scene{perspective:1100px}.b12 .fcg-card{position:relative;height:260px;cursor:pointer;transform-style:preserve-3d;transition:transform .55s cubic-bezier(.3,.8,.3,1);outline:none}.b12 .fcg-card.flip{transform:rotateY(180deg)}.b12 .fcg-card.fly-ok{animation:fcgOk .45s ease forwards}.b12 .fcg-card.fly-no{animation:fcgNo .45s ease forwards}@keyframes fcgOk{to{transform:translateX(120%) rotate(14deg) rotateY(180deg);opacity:0}}@keyframes fcgNo{to{transform:translateX(-120%) rotate(-14deg) rotateY(180deg);opacity:0}}.b12 .fcg-face{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;border-radius:22px;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:18px;box-shadow:0 14px 34px rgba(33,30,25,.16),inset 0 2px 0 rgba(255,255,255,.7);border:1px solid var(--rule)}.b12 .fcg-front{background:radial-gradient(circle at 20% 15%,#fffdf6,#f7efd6)}.b12 .fcg-front:after{content:"";position:absolute;inset:10px;border:1.5px dashed rgba(181,50,42,.28);border-radius:15px;pointer-events:none}.b12 .fcg-back{transform:rotateY(180deg);background:linear-gradient(160deg,#3f5230,#2b3a21);color:#fdf8e6;border-color:#2b3a21}.b12 .fcg-emoji{font-size:2.6rem;line-height:1;margin-bottom:8px}.b12 .fcg-hz{font-family:"Noto Serif SC",serif;font-weight:900;font-size:2.6rem;line-height:1.15;color:var(--ink)}.b12 .fcg-read{font-size:1.05rem;margin-top:6px;color:#e8dfbd;letter-spacing:.02em}.b12 .fcg-mean{font-size:1.5rem;font-weight:800;color:var(--seal-deep)}.b12 .fcg-back .fcg-mean{color:#fdf8e6;font-size:1.35rem;margin-top:8px}.b12 .fcg-back .fcg-hz{color:#fdf8e6;font-size:1.8rem}.b12 .fcg-tap{position:absolute;bottom:16px;font-size:.75rem;color:var(--ink-soft);opacity:.8}.b12 .fcg-back .fcg-tap{color:#cfd8bd}.b12 .fcg-spk{position:absolute;top:12px;right:14px;border:0;background:rgba(181,50,42,.1);width:36px;height:36px;border-radius:50%;font-size:1.05rem;cursor:pointer;z-index:2}.b12 .fcg-back .fcg-spk{background:rgba(255,255,255,.15)}.b12 .fcg-btns{display:flex;gap:12px;margin-top:20px;justify-content:center}.b12 .fcg-btn{flex:1;max-width:190px;padding:12px 10px;border-radius:14px;border:0;font-size:1rem;font-weight:800;cursor:pointer;color:#fff;font-family:inherit;box-shadow:0 5px 0 rgba(0,0,0,.18);transition:transform .08s,box-shadow .08s,opacity .2s}.b12 .fcg-btn:active{transform:translateY(4px);box-shadow:0 1px 0 rgba(0,0,0,.18)}.b12 .fcg-btn.no{background:var(--seal)}.b12 .fcg-btn.ok{background:var(--bamboo-bright)}.b12 .fcg-btn:disabled{opacity:.35;cursor:default}.b12 .fcg-done{padding:28px 18px;border-radius:22px;background:radial-gradient(circle at 20% 15%,#fffdf6,#f7efd6);border:1px solid var(--rule);box-shadow:0 14px 34px rgba(33,30,25,.16)}.b12 .fcg-done .big{font-family:"Noto Serif SC",serif;font-size:3rem;font-weight:900;color:var(--seal)}.b12 .fcg-done p{margin:6px 0 16px;color:var(--ink-soft)}.b12 .fcg-done .fcg-btn{display:inline-block;max-width:none;padding:12px 24px;background:var(--seal)}.b12 .fcg-hint{font-size:.78rem;color:var(--ink-soft);margin-top:14px}.b12 .menu-img{display:block;max-width:340px;width:100%;margin:0 auto 16px;border-radius:16px;border:1px solid var(--rule);box-shadow:0 10px 26px rgba(33,30,25,.16)}.b12 .menu-list{max-width:640px;margin:0 auto;background:#fffdf6;border:1px solid var(--rule);border-radius:16px;overflow:hidden}.b12 .menu-row{display:flex;align-items:center;gap:12px;padding:10px 16px;border-bottom:1px dashed var(--rule)}.b12 .menu-row:last-child{border-bottom:0}.b12 .menu-row .m-main{flex:1;min-width:0}.b12 .menu-row .m-hz{font-family:"Noto Serif SC",serif;font-weight:800;font-size:1.2rem;color:var(--ink)}.b12 .menu-row .m-py{font-size:.78rem;color:var(--ink-soft)}.b12 .menu-row .m-vn{font-size:.82rem;color:var(--bamboo);font-weight:600}.b12 .menu-row .m-price{flex:none;background:var(--seal);color:#fff;font-weight:800;border-radius:8px;padding:4px 10px;font-size:.95rem;text-align:center;line-height:1.2}.b12 .menu-row .m-price.speakable{cursor:pointer;transition:transform .1s,filter .15s}.b12 .menu-row .m-price.speakable:hover{filter:brightness(1.1)}.b12 .menu-row .m-price.speakable:active{transform:scale(.94)}.b12 .menu-row .m-price small{display:block;font-size:.68rem;font-weight:600;opacity:.9}.b12 .price-chat{max-width:600px;margin:0 auto;display:grid;gap:14px;padding:18px 14px;border-radius:22px;background:repeating-linear-gradient(135deg,#fbf5e3 0 14px,#f6eed6 14px 28px);border:1px solid var(--rule);box-shadow:inset 0 0 0 4px rgba(255,255,255,.55),0 10px 26px rgba(33,30,25,.1)}.b12 .chat-row{display:flex;align-items:flex-end;gap:10px}.b12 .chat-row.me{flex-direction:row-reverse}.b12 .chat-ava{flex:none;width:44px;height:44px;border-radius:50%;display:grid;place-items:center;font-size:1.5rem;background:#fffdf6;border:2px solid var(--rule);box-shadow:0 3px 0 rgba(0,0,0,.08)}.b12 .chat-row.me .chat-ava{border-color:var(--bamboo-bright)}.b12 .chat-bubble{position:relative;max-width:78%;padding:10px 16px 11px;border-radius:20px 20px 20px 6px;background:#fffdf6;border:1.5px solid var(--seal);box-shadow:0 4px 0 rgba(181,50,42,.14)}.b12 .chat-row.me .chat-bubble{border-radius:20px 20px 6px 20px;border-color:var(--bamboo-bright);background:#f1f8e9;box-shadow:0 4px 0 rgba(58,154,74,.18)}.b12 .chat-who{font-size:.68rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--seal);margin-bottom:2px}.b12 .chat-row.me .chat-who{color:var(--bamboo-bright)}.b12 .chat-hz{font-family:"Noto Serif SC",serif;font-size:1.3rem;font-weight:700;color:var(--ink);line-height:1.35}.b12 .chat-hz .hl{background:linear-gradient(transparent 58%,rgba(212,160,23,.45) 0);padding:0 2px}.b12 .chat-py{font-size:.8rem;color:var(--ink-soft);margin-top:2px}.b12 .chat-vn{font-size:.84rem;color:var(--bamboo);font-weight:600;margin-top:2px}.b12 .chat-tag{display:inline-block;margin-top:6px;background:var(--seal);color:#fff;font-weight:800;font-size:.9rem;padding:2px 12px;border-radius:6px;transform:rotate(-2deg);box-shadow:0 2px 0 rgba(0,0,0,.2)}.b12 .receipt{max-width:340px;margin:4px auto 0;background:#fffefa;padding:16px 20px 22px;font-family:"Noto Serif SC",serif;box-shadow:0 8px 22px rgba(33,30,25,.16);clip-path:polygon(0 0,100% 0,100% calc(100% - 10px),95% 100%,90% calc(100% - 10px),85% 100%,80% calc(100% - 10px),75% 100%,70% calc(100% - 10px),65% 100%,60% calc(100% - 10px),55% 100%,50% calc(100% - 10px),45% 100%,40% calc(100% - 10px),35% 100%,30% calc(100% - 10px),25% 100%,20% calc(100% - 10px),15% 100%,10% calc(100% - 10px),5% 100%,0 calc(100% - 10px))}.b12 .receipt-title{text-align:center;font-weight:900;letter-spacing:.3em;border-bottom:2px dashed var(--rule);padding-bottom:8px;margin-bottom:8px}.b12 .receipt-line{display:flex;justify-content:space-between;padding:3px 0;font-size:1.05rem}.b12 .receipt-line.sum{border-top:2px dashed var(--rule);margin-top:8px;padding-top:10px;align-items:center;font-weight:900}.b12 .receipt-line.sum .m-price{font-size:1.15rem;background:var(--seal);color:#fff;border-radius:8px;padding:3px 12px;text-align:center;line-height:1.2;cursor:pointer;transform:rotate(-2deg)}.b12 .receipt-line.sum .m-price small{display:block;font-size:.66rem;font-weight:600;opacity:.9}.b12 .gm{max-width:560px;margin:0 auto}.b12 .gm-tabs{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin-bottom:14px}.b12 .gm-tab{border:1.5px solid var(--rule);background:#fffdf6;border-radius:12px;padding:8px 4px;font-size:.8rem;font-weight:700;color:var(--ink-soft);cursor:pointer;font-family:inherit;line-height:1.25;transition:transform .1s,background .15s}.b12 .gm-tab span{display:block;font-size:1.3rem}.b12 .gm-tab.on{background:var(--seal);border-color:var(--seal-deep);color:#fff;box-shadow:0 4px 0 var(--seal-deep);transform:translateY(-2px)}.b12 .gm-panel{background:radial-gradient(circle at 15% 10%,#fffdf6,#f7efd6);border:1px solid var(--rule);border-radius:20px;padding:18px 16px 20px;box-shadow:0 10px 26px rgba(33,30,25,.12);min-height:230px}.b12 .gm-head{display:flex;justify-content:space-between;align-items:center;font-size:.82rem;font-weight:700;color:var(--ink-soft);margin-bottom:10px}.b12 .gm-head b.ok{color:var(--bamboo-bright)}.b12 .gm-head b.no{color:var(--seal)}.b12 .gm-q{font-size:1.05rem;font-weight:800;color:var(--seal-deep);text-align:center;margin:6px 0 12px}.b12 .gm-q small{display:block;font-size:.78rem;font-weight:600;color:var(--ink-soft);margin-top:2px}.b12 .gm-line{min-height:54px;border:2px dashed var(--rule);border-radius:14px;padding:8px;display:flex;flex-wrap:wrap;gap:6px;justify-content:center;align-items:center;background:rgba(255,255,255,.6);margin-bottom:12px}.b12 .gm-line.good{border-color:var(--bamboo-bright);background:#eaf6e3}.b12 .gm-line.bad{border-color:var(--seal);animation:gmShake .35s}@keyframes gmShake{25%{transform:translateX(-6px)}75%{transform:translateX(6px)}}.b12 .gm-bank{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}.b12 .gm-chip{font-family:"Noto Serif SC",serif;font-size:1.25rem;font-weight:700;padding:6px 14px;border-radius:10px;border:1.5px solid var(--rule);background:#fffdf6;color:var(--ink);cursor:pointer;box-shadow:0 3px 0 rgba(0,0,0,.12);transition:transform .08s}.b12 .gm-chip:active{transform:translateY(3px);box-shadow:none}.b12 .gm-chip.used{opacity:.25;pointer-events:none}.b12 .gm-chip.on{border-color:var(--seal);background:#fdeae6}.b12 .gm-chip.done{border-color:var(--bamboo-bright);background:#eaf6e3;pointer-events:none;opacity:.65}.b12 .gm-chip.wrong{animation:gmShake .35s;border-color:var(--seal)}.b12 .gm-match{display:grid;grid-template-columns:1fr 1fr;gap:10px}.b12 .gm-match .gm-chip{font-size:.98rem;text-align:left}.b12 .gm-opts{display:grid;gap:10px}.b12 .gm-opts.num{grid-template-columns:1fr 1fr}.b12 .gm-opt{font-family:"Noto Serif SC",serif;font-size:1.1rem;font-weight:700;padding:11px 12px;border-radius:12px;border:1.5px solid var(--rule);background:#fffdf6;cursor:pointer;box-shadow:0 3px 0 rgba(0,0,0,.1);text-align:center}.b12 .gm-opt.right{background:#eaf6e3;border-color:var(--bamboo-bright)}.b12 .gm-opt.wrong{background:#fdeae6;border-color:var(--seal);animation:gmShake .35s}.b12 .gm-opt:disabled{cursor:default}.b12 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