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.empty{padding:28px;border:1px dashed #b8cbb0;border-radius:16px;background:#f0f5ec}.yc-root .testbox{max-width:840px;margin:auto;background:white;border:1px solid var(--line);border-radius:20px;padding:27px}.yc-root .testbox .actions{flex-wrap:wrap}.yc-root .questionnav{display:flex;gap:6px;flex-wrap:wrap;margin:20px 0}.yc-root .questionnav button{width:30px;height:30px;padding:0;font-size:10px;border:1px solid var(--line);background:white;border-radius:7px}.yc-root .questionnav .answered{background:#e3efd6;border-color:#b2cca0}.yc-root .questionnav .current{border:2px solid var(--green)}.yc-root .reviewcard{border:1px solid var(--line);border-radius:15px;background:white;padding:22px;margin-bottom:14px}.yc-root .reviewcard .en{font-size:19px}.yc-root .reviewcard small{color:var(--muted)}.yc-root .scorelist{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:20px 0}.yc-root .scorelist div{display:flex;justify-content:space-between;border:1px solid var(--line);border-radius:9px;padding:10px 13px;font-size:12px;background:white}.yc-root .foot{margin-top:30px;color:var(--muted);font-size:11px;padding-top:18px;border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:15px}.yc-root .foot p{margin:0}.yc-root .sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.yc-root .resetbox{background:#fff2e8;border-radius:10px;padding:17px;margin-top:13px}.yc-root .resetbox p{font-size:12px}.yc-root .notice{font-size:11px;color:#947c3c;margin:8px 0 0}@media(prefers-reduced-motion:no-preference){.yc-root .feedback{animation:yc-arrive .18s ease-out}.yc-root .routecard{transition:transform .15s,border-color .15s}@keyframes yc-arrive{from{opacity:.3;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}}@media(max-width:900px){.yc-root .layout{grid-template-columns:175px minmax(0,1fr);gap:15px}.yc-root .exprgrid{grid-template-columns:1fr}.yc-root 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var(--line);border-radius:10px;background:white;padding:10px 13px;font-size:12px;font-weight:700}.yc-root .rail:not([open]) .railbody{display:none}.yc-root .railbody{background:#edf2e9;padding:10px;border-radius:0 0 12px 12px}.yc-root .rail .eyebrow{display:none}.yc-root .coursehead h2{font-size:25px}.yc-root .coursehead,.yc-root .body{padding:21px 18px}.yc-root .steps{padding:13px 13px 0}.yc-root .steps button{font-size:11px;padding:8px 4px}.yc-root .exprgrid{grid-template-columns:1fr}.yc-root .question .en{font-size:21px}.yc-root .actions{align-items:flex-start;flex-wrap:wrap}.yc-root .actions .primary{margin-left:auto}.yc-root .scorelist{grid-template-columns:1fr}.yc-root .testbox{padding:22px 18px}.yc-root .foot{align-items:flex-start}.yc-root .sectionhead{align-items:flex-start}.yc-root .sectionhead .tiny{font-size:10px}.yc-root .choice{font-size:13px;padding:11px 12px}.yc-root .entry .en{font-size:19px}}

.yc-root{margin:0;color:var(--ink);font-size:15px;line-height:1.6;background:transparent}
.yc-root .wrap{padding:0;max-width:none}.yc-root .tabs{margin-top:18px}.yc-root .yc-heading{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:14px}.yc-root .yc-heading p{margin:0}.yc-root .hero{border-radius:24px}.yc-root .coursebox{box-shadow:0 12px 34px #21382c05}.yc-root .coursebox .en{font-family:Georgia,serif}.yc-root .entry .note{letter-spacing:0}.yc-root .celebrate{position:relative;overflow:hidden}.yc-root .celebrate:before{content:"";position:absolute;top:-40px;right:-30px;width:90px;height:90px;border-radius:50%;border:16px solid #d5edb9;opacity:.5;pointer-events:none}.yc-root .hero .art{height:165px}
.ex-quick-learn{display:grid;grid-template-columns:1fr 160px;position:relative;border:1px solid #c9dfba;border-radius:24px;background:linear-gradient(115deg,#eff7e7 0%,#f6f8ef 58%,#ece7f6 100%);padding:27px 31px;margin:24px 0;gap:18px;align-items:center;overflow:hidden}.ex-quick-learn .eyebrow{color:#527a42;font-size:11px}.ex-quick-learn h2{font-size:29px;letter-spacing:-1px;margin:9px 0 10px;color:#162a31;line-height:1.2}.ex-quick-learn p{font-size:14px;color:#60786b;max-width:740px;margin:0 0 16px;line-height:1.65}.ex-quick-art{width:160px;pointer-events:none}.ex-quick-bottom{display:flex;align-items:center;gap:18px;flex-wrap:wrap}.ex-quick-bottom small{font-size:12px;color:#55764b}.ex-quick-progress{margin-top:17px;max-width:550px}.ex-quick-progress>div:first-child{display:flex;justify-content:space-between;gap:15px;font-size:11px;color:#55764b;margin-bottom:7px}.ex-quick-progress .ex-meter{height:6px;background:#dce8d1}.ex-quick-progress .ex-meter i{background:#648f51}.yc-root .loadingbox{background:white;border:1px solid var(--line);border-radius:20px;padding:30px}.yc-root .primary{min-height:43px}
@media(max-width:1120px){.yc-root .layout{grid-template-columns:1fr}.yc-root .rail{position:static;margin-bottom:5px}.yc-root .rail summary{display:block;padding:11px 13px;background:white;border:1px solid var(--line);border-radius:10px;font-size:12px}.yc-root .rail .eyebrow{display:none}.yc-root .railbody{display:grid;grid-template-columns:1fr 1fr;background:#eef3e9;padding:9px}.yc-root .rail:not([open]) .railbody{display:none}.yc-root .routegrid{grid-template-columns:1fr 1fr}.yc-root .exprgrid{grid-template-columns:1fr}}
@media(max-width:650px){.yc-root .routegrid{grid-template-columns:1fr}.yc-root .yc-heading{align-items:flex-start}.yc-root .yc-heading .tiny{font-size:10px}.yc-root .hero{padding:22px}.yc-root .railbody{display:block}.ex-quick-learn{grid-template-columns:1fr;padding:23px}.ex-quick-art{position:absolute;right:-20px;top:-18px;width:100px;opacity:.18}.ex-quick-learn h2{font-size:25px}.ex-quick-learn p{position:relative;font-size:13px}.ex-quick-bottom{gap:11px}}