.rbs{--bg:#0a4f65;--bg2:#073a4b;--ink:#ffffff;--soft:#cfeaf2;--yellow:#ffd60a;--navy:#0e1630;--good:#5bd68a;--bad:#ff6b5a;box-sizing:border-box;position:relative;overflow:hidden;max-width:900px;margin:24px auto;padding:clamp(20px,4vw,40px);border-radius:28px;background:linear-gradient(135deg,var(--bg),var(--bg2));color:var(--ink);font-family:'Lexend',system-ui,'Segoe UI',Arial,sans-serif;line-height:1.5;text-align:left}.rbs *,.rbs *::before,.rbs *::after{box-sizing:border-box}.rbs::before{content:"";position:absolute;width:300px;height:300px;right:-110px;top:-140px;border-radius:50%;background:rgb(255 214 10 / .14);pointer-events:none}.rbs>*{position:relative;z-index:1}.rbs button{font:inherit;cursor:pointer}.rbs button:focus-visible,.rbs select:focus-visible,.rbs .rbs-w:focus-visible{outline:3px solid var(--yellow);outline-offset:2px}.rbs .rbs-loading{margin:0;padding:24px 0;text-align:center;color:var(--soft)}.rbs .rbs-head{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:6px 16px;margin:0 0 6px}.rbs h2.rbs-title{margin:0 0 6px;padding:0;font-size:clamp(1.5rem,3.6vw,2.2rem);line-height:1.15;font-weight:800;letter-spacing:-.01em;text-transform:none;color:#fff}.rbs .rbs-head h2.rbs-title{margin:0}.rbs .rbs-so{margin:0 0 14px;font-weight:600;color:var(--yellow);font-size:1.05rem}.rbs .rbs-so--hidden{display:none}.rbs .rbs-hint{margin:0 0 16px;font-size:.92rem;color:var(--soft)}.rbs .rbs-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:0 0 14px}.rbs .rbs-stat{padding:12px 10px;border-radius:16px;background:rgb(255 255 255 / .1);text-align:center}.rbs .rbs-stat b{display:block;font-size:1.5rem;line-height:1.1;font-weight:800;color:var(--yellow)}.rbs .rbs-stat span{display:block;margin-top:2px;font-size:.78rem;color:var(--soft)}.rbs .rbs-stat em{display:block;font-style:normal;font-size:.7rem;color:var(--soft);opacity:.8}.rbs .rbs-tabs{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;margin:0 0 18px}.rbs button.rbs-tab{display:flex;flex-direction:column;align-items:center;gap:0;padding:10px 6px;border:2px solid rgb(255 255 255 / .3);border-radius:14px;background:rgb(255 255 255 / .08);color:#fff;transition:background-color .15s}.rbs button.rbs-tab:hover{background:rgb(255 255 255 / .16)}.rbs button.rbs-tab b{font-size:1rem;font-weight:800}.rbs button.rbs-tab span{font-size:.78rem;font-weight:600;color:var(--soft)}.rbs button.rbs-tab.is-locked{opacity:.75}.rbs button.rbs-tab.is-on{background:var(--yellow);border-color:var(--yellow);color:var(--navy);opacity:1}.rbs button.rbs-tab.is-on span{color:var(--navy)}.rbs .rbs-level{margin:0 0 26px}.rbs .rbs-lvhead{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:4px 16px;margin:0 0 12px}.rbs h3.rbs-lvtitle{margin:0;padding:0;font-size:1.2rem;font-weight:800;color:#fff;text-transform:none}.rbs .rbs-lvtitle small{font-size:.85rem;font-weight:600;color:var(--yellow)}.rbs .rbs-lvcount{font-size:.9rem;font-weight:600;color:var(--soft)}.rbs .rbs-lock{display:flex;flex-direction:column;gap:4px;padding:16px 18px;border-radius:18px;background:rgb(255 255 255 / .08);border:2px dashed rgb(255 255 255 / .3);color:var(--soft)}.rbs .rbs-lock b{color:var(--yellow)}.rbs .rbs-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.rbs button.rbs-card{display:flex;flex-direction:column;align-items:flex-start;gap:4px;padding:16px 18px;border:0;border-radius:18px;background:#fff;color:var(--navy);text-align:left;box-shadow:0 14px 26px -18px rgb(0 0 0 / .7);transition:transform .15s}.rbs button.rbs-card:hover{transform:translateY(-3px)}.rbs button.rbs-card.is-done{background:#e6f9ee}.rbs .rbs-card-topic{font-size:.72rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:#0a6a87}.rbs .rbs-card-title{font-size:1.1rem;font-weight:800;line-height:1.25}.rbs .rbs-card-meta{font-size:.82rem;opacity:.7}.rbs .rbs-card-go{margin-top:4px;font-size:.88rem;font-weight:700;color:#0a6a87}.rbs .rbs-bar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:0 0 14px}.rbs button.rbs-btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:10px 22px;border:2px solid var(--yellow);border-radius:999px;background:var(--yellow);color:var(--navy);font-weight:800;font-size:1rem;transition:transform .15s}.rbs button.rbs-btn:hover{transform:translateY(-2px);background:#ffe44d}.rbs button.rbs-btn--ghost{background:#fff0;color:#fff;border-color:rgb(255 255 255 / .55)}.rbs button.rbs-btn--ghost:hover{background:rgb(255 255 255 / .08);border-color:#fff}.rbs button.rbs-btn--small{min-height:38px;padding:6px 16px;font-size:.92rem}.rbs button.rbs-btn[disabled]{opacity:.5;cursor:default;transform:none}.rbs .rbs-count{font-weight:600;color:var(--soft);font-variant-numeric:tabular-nums}.rbs button.rbs-link{padding:4px 0;border:0;background:none;color:var(--yellow);font-weight:700;font-size:.9rem;text-decoration:underline;text-underline-offset:3px}.rbs button.rbs-link:hover{color:#ffe44d}.rbs .rbs-tools{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin:8px 0 12px}.rbs .rbs-tools select{min-height:38px;padding:4px 12px;border:2px solid rgb(255 255 255 / .35);border-radius:12px;background:#073a4b;color:#fff;font:inherit;font-size:.92rem}.rbs .rbs-text{display:flex;flex-direction:column;gap:14px;margin:0 0 22px}.rbs .rbs-para{padding:clamp(16px,3vw,24px);border-radius:20px;background:#fff;color:var(--navy);box-shadow:0 18px 30px -22px rgb(0 0 0 / .7);transition:box-shadow .2s}.rbs .rbs-para.is-speaking{box-shadow:0 0 0 4px var(--yellow)}.rbs .rbs-line{margin:0;font-size:clamp(1.08rem,2.4vw,1.28rem);line-height:1.85}.rbs .rbs-w{cursor:pointer;border-radius:5px;border-bottom:2px dotted rgb(10 106 135 / .45);padding:0 1px;transition:background-color .12s}.rbs .rbs-w:hover{background:#fff3b0}.rbs .rbs-w.is-sel{background:var(--yellow);border-bottom-color:#fff0}.rbs .rbs-prow{display:flex;flex-wrap:wrap;gap:6px 18px;margin:10px 0 0}.rbs .rbs-para button.rbs-link{color:#0a6a87}.rbs .rbs-para button.rbs-link:hover{color:#073a4b}.rbs .rbs-trans{margin:10px 0 0;padding:12px 14px;border-radius:12px;background:#e8f6fa;color:var(--navy);font-size:1.05rem;line-height:1.7}.rbs .rbs-wordpanel{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 8px;margin:10px 0 0;padding:10px 14px;border-radius:12px;background:#fff3b0;color:var(--navy);font-size:1.05rem}.rbs .rbs-wordpanel b{font-weight:800}.rbs .rbs-wm{font-weight:700;color:#0a4f65}.rbs .rbs-wbtns{display:flex;gap:14px;margin-left:auto}.rbs .rbs-keys{margin:0 0 22px}.rbs .rbs-h3{margin:0 0 8px;font-size:1.05rem;font-weight:700;color:#fff}.rbs .rbs-chips{display:flex;flex-wrap:wrap;gap:8px}.rbs button.rbs-chip{padding:8px 14px;border:2px solid rgb(255 255 255 / .35);border-radius:999px;background:rgb(255 255 255 / .1);color:#fff;font-weight:600;font-size:.95rem}.rbs button.rbs-chip:hover{background:rgb(255 255 255 / .2)}.rbs button.rbs-chip.is-on{background:var(--yellow);border-color:var(--yellow);color:var(--navy)}.rbs .rbs-nextrow{display:flex;justify-content:center;margin:14px 0 0}.rbs .rbs-prog{height:8px;border-radius:99px;background:rgb(255 255 255 / .15);overflow:hidden;margin:0 0 16px}.rbs .rbs-prog i{display:block;height:100%;background:var(--yellow);border-radius:99px;transition:width .25s}.rbs .rbs-quiztitle{margin:0 0 10px;font-size:.85rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--soft)}.rbs .rbs-q{padding:clamp(18px,3vw,28px);border-radius:22px;background:#fff;color:var(--navy);text-align:center;box-shadow:0 20px 34px -22px rgb(0 0 0 / .7);margin:0 0 16px}.rbs .rbs-big{display:block;font-size:clamp(1.25rem,3.4vw,1.7rem);font-weight:800;line-height:1.3}.rbs .rbs-choices{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.rbs button.rbs-choice{min-height:60px;padding:12px 16px;border:2px solid #fff0;border-radius:16px;background:rgb(255 255 255 / .14);color:#fff;font-weight:700;font-size:1.02rem;text-align:center;overflow-wrap:anywhere;transition:background-color .15s,transform .15s}.rbs button.rbs-choice:hover:not([disabled]){background:rgb(255 255 255 / .26);transform:translateY(-2px)}.rbs button.rbs-choice.is-good{background:var(--good);color:var(--navy);border-color:#fff}.rbs button.rbs-choice.is-bad{background:var(--bad);color:var(--navy);border-color:#fff}.rbs button.rbs-choice[disabled]{cursor:default}.rbs .rbs-fb{min-height:1.6em;margin:14px 0 0;font-weight:700;font-size:1.05rem;text-align:center}.rbs .rbs-fb.is-good{color:var(--good)}.rbs .rbs-fb.is-bad{color:#ffb4aa}.rbs .rbs-score{margin:0 0 6px;text-align:center;font-size:clamp(2.4rem,8vw,4rem);font-weight:800;color:var(--yellow);line-height:1.1}.rbs .rbs-msg{margin:0 0 14px;text-align:center;font-size:1.1rem;color:var(--soft)}.rbs .rbs-unlock{margin:0 0 18px;padding:12px 16px;border-radius:14px;background:rgb(91 214 138 / .18);border:2px solid var(--good);text-align:center;font-weight:700;color:#fff}.rbs .rbs-missed{margin:0 0 18px;padding:0;list-style:none;display:grid;gap:8px}.rbs .rbs-missed li{padding:10px 14px;border-radius:12px;background:rgb(255 255 255 / .1)}.rbs .rbs-row{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}@media (max-width:620px){.rbs{border-radius:20px}.rbs .rbs-cards{grid-template-columns:1fr}.rbs .rbs-choices{grid-template-columns:1fr}.rbs .rbs-stat b{font-size:1.25rem}.rbs .rbs-stat span{font-size:.72rem}.rbs .rbs-stat em{display:none}.rbs .rbs-wbtns{margin-left:0;width:100%}}@media (prefers-reduced-motion:reduce){.rbs button.rbs-card,.rbs button.rbs-btn,.rbs button.rbs-choice,.rbs .rbs-prog i,.rbs .rbs-para{transition:none}}.rsc{--ink:#0e1630;--soft:#4b5a8c;--teal:#0a4f65;--yellow:#ffd60a;--line:#d5def5;--tint:#f2f6ff;--good:#1a9b57;--bad:#d64545;box-sizing:border-box;max-width:760px;margin:24px auto;padding:clamp(24px,3.5vw,44px);background:#fff;border:2px solid var(--line);border-radius:24px;box-shadow:0 12px 34px rgb(14 22 48 / .08);color:var(--ink);font-family:'Lexend',system-ui,'Segoe UI',Arial,sans-serif;line-height:1.5;text-align:left}.rsc *,.rsc *::before,.rsc *::after{box-sizing:border-box}.rsc .c-head{display:flex;gap:18px;align-items:flex-start;margin:0 0 22px}.rsc .c-tick{flex:none;display:flex;align-items:center;justify-content:center;width:56px;height:56px;border-radius:50%;background:var(--yellow);font-size:1.5rem}.rsc .c-kicker{margin:0 0 6px;font-size:.85rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--teal)}.rsc h2.c-title{margin:0 0 4px;padding:0;font-size:clamp(1.5rem,3vw,2.1rem);line-height:1.2;font-weight:800;letter-spacing:-.01em;text-transform:none;color:var(--ink)}.rsc .c-so{margin:0 0 10px;font-weight:600;color:var(--teal)}.rsc .c-sub{margin:0;color:var(--soft);font-size:1.02rem}.rsc .c-sub em{display:block;margin-top:6px;font-size:.95em}.rsc .c-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:0 0 14px}.rsc label.c-l{display:block;margin:0 0 6px;font-size:.92rem;font-weight:600;color:var(--soft)}.rsc input.c-in{display:block;width:100%;min-height:52px;padding:12px 16px;background:#fff;border:2px solid var(--line);border-radius:14px;color:var(--ink);font:inherit;font-size:1.02rem;transition:border-color .2s,box-shadow .2s}.rsc input.c-in:focus{outline:none;border-color:var(--teal);box-shadow:0 0 0 3px rgb(10 79 101 / .15)}.rsc .c-hp{position:absolute!important;left:-9999px!important;width:1px;height:1px;overflow:hidden}.rsc button.c-btn{display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:12px 32px;border:2px solid var(--teal);border-radius:999px;background:var(--teal);color:#fff;font:inherit;font-weight:800;font-size:1.02rem;cursor:pointer;transition:transform .15s,background-color .15s}.rsc button.c-btn:hover:not(:disabled){transform:translateY(-2px);background:#0d6785}.rsc button.c-btn:disabled{opacity:.6;cursor:default}.rsc button.c-btn:focus-visible{outline:3px solid var(--ink);outline-offset:3px}.rsc .c-note{margin:14px 0 0;font-size:.85rem;color:var(--soft)}.rsc .c-note em{display:block;margin-top:3px}.rsc .c-msg{margin:16px 0 0;padding:14px 18px;border-radius:14px;font-weight:600}.rsc .c-msg span{display:block;font-weight:400;font-style:italic}.rsc .c-msg.ok{background:#e6f9ee;border:2px solid #5bd68a;color:#0b5b34}.rsc .c-msg.no{background:#fdeaea;border:2px solid var(--bad);color:#8f2020}@media (max-width:640px){.rsc .c-head{flex-direction:column;gap:12px}.rsc .c-grid{grid-template-columns:1fr}.rsc button.c-btn{width:100%}}@media (prefers-reduced-motion:reduce){.rsc input.c-in,.rsc button.c-btn{transition:none}}