.ex172-scene,.ex172-practice{color:#31334d}.ex172-scene{border:1px solid #dfcfe8;border-radius:22px;background:linear-gradient(145deg,#fff9f2,#f5eefb);padding:20px}.ex172-banner{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:22px;align-items:center}.ex172-banner>svg{width:100%;height:auto;display:block}.ex172-banner span,.ex172-practice-head span{font-size:.76rem;letter-spacing:.09em;font-weight:800;color:#825381}.ex172-banner h3{font-size:clamp(1.5rem,3vw,2.2rem);line-height:1.1;margin:.6rem 0}.ex172-banner p{line-height:1.5}.ex172-values{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;list-style:none;padding:0;margin:18px 0}.ex172-values li{padding:13px;background:#fff;border-radius:14px;line-height:1.5}.ex172-values b{display:block;color:#754f91}.ex172-note{margin:16px 0 0;padding-top:14px;border-top:1px solid #dfcfe8;line-height:1.5}.ex172-practice-head{display:flex;justify-content:space-between;gap:20px;align-items:center;padding:20px;border:1px solid #e1cce3;border-radius:20px;background:linear-gradient(125deg,#fff0d9,#f4e5f3)}.ex172-practice-head h3{font-size:1.5rem;margin:8px 0}.ex172-practice-head p{margin:0;line-height:1.5}.ex172-practice-head strong{white-space:nowrap;font-size:1.1rem;color:#6e3971;padding:10px 14px;background:#fff;border-radius:13px}.ex172-summary{padding:13px 16px;border-left:4px solid #ad69a9;background:#f8f1fa;border-radius:10px;line-height:1.5}.ex172-practice>ol{padding:0;list-style:none;display:grid;gap:22px}.ex172-case{padding:22px;border:1px solid #e5d8e8;border-radius:20px;background:#fff}.ex172-case-tag{display:flex;gap:10px;align-items:center;color:#8a628d;font-size:.76rem;font-weight:800;letter-spacing:.08em}.ex172-case-tag b{display:grid;place-items:center;width:30px;height:30px;border-radius:10px;background:#f5e6e7;color:#80516b;font-size:1rem}.ex172-source-text{padding:14px 16px;border-radius:14px;background:#f8f3ed;line-height:1.7}.ex172-case h5{font-size:1.08rem;line-height:1.5;margin:14px 0}.ex172-case fieldset{border:0;padding:0;margin:0;display:grid;gap:9px}.ex172-option{display:flex;gap:12px;align-items:flex-start;padding:13px 15px;min-height:46px;border:1px solid #dbcfde;border-radius:13px;background:#fbf8fc;line-height:1.5;cursor:pointer}.ex172-option:has(input:checked){background:#f1e3f3;border-color:#af70b2}.ex172-option input{accent-color:#8d5497;flex-shrink:0;width:19px;height:19px;margin-top:2px}.ex172-number{display:block;max-width:240px;width:100%;padding:12px;margin:8px 0;border:2px solid #d2bedb;border-radius:12px;font-size:1.1rem}.ex172-case details{margin-top:14px;font-size:.95rem}.ex172-feedback{padding:12px 14px;line-height:1.6;background:#fff1de;border-radius:12px}.ex172-case[data-ex172-status=correct]{border-color:#87bcac}.ex172-case[data-ex172-status=correct] .ex172-feedback{background:#e9f5ed;color:#2a644f}.ex172-practice footer{padding-top:10px;line-height:1.6}.ex172-practice footer button{background:#874e91;color:white;border-radius:15px;padding:14px 20px;font-size:1rem;border:0;cursor:pointer}.ex172-storyboard{margin:14px 0;padding:15px;background:linear-gradient(135deg,#fff7e8,#f6eef9);border:1px solid #e7d8e8;border-radius:16px}.ex172-frames{display:flex;flex-wrap:wrap;justify-content:center;gap:12px}.ex172-frame{flex:0 1 160px;max-width:180px;text-align:center;padding:8px;border-radius:14px;background:#ffffffc9}.ex172-frame>b{font-size:.96rem;color:#69456f}.ex172-frame svg{display:block;width:100%;height:auto}.ex172-storyboard figcaption{font-size:.86rem;line-height:1.5;text-align:center;padding-top:12px}.ex172-arm-legend{display:flex;justify-content:center;align-items:center;gap:7px;margin-top:8px}.ex172-arm-legend i{display:inline-block;width:14px;height:8px;border-radius:4px;background:#207a76}.ex172-arm-legend i:nth-of-type(2){background:#9a4ca4}.ex172-sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}@media(max-width:640px){.ex172-banner{grid-template-columns:1fr}.ex172-scene{padding:16px}.ex172-values{grid-template-columns:1fr}.ex172-practice-head{display:block;padding:17px}.ex172-practice-head strong{display:inline-block;margin-top:12px}.ex172-case{padding:16px}.ex172-source-text{padding:12px}.ex172-storyboard{padding:10px}.ex172-frame{flex-basis:116px;padding:5px}.ex172-frames{gap:8px}}