.app { min-height: 100vh; position: relative; overflow-x: hidden; }
.top { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding: 16px 32px; border-bottom: 1px solid var(--hair); position: relative; z-index: 1; }
.brand { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.wrap { max-width: 980px; margin: 0 auto; padding: 40px 32px 56px; position: relative; z-index: 1; }
.narrow { max-width: 640px; }
.steps { display: flex; gap: 8px; flex-wrap: wrap; }
.step { font-size: 13px; padding: 4px 12px; border-radius: 99px; border: 1px solid var(--hair); color: var(--dim); }
.step.on { border-color: var(--steel); color: var(--text); }
.step.done { color: var(--steel); }
ul.list { margin: 6px 0 0; padding-left: 20px; }
ul.list li { margin: 7px 0; }
.actions { display: flex; gap: 12px; justify-content: space-between; align-items: center; flex-wrap: wrap; margin-top: 28px; }
.who { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.timer { display: flex; flex-direction: column; align-items: flex-end; padding: 6px 16px; border: 1px solid var(--hair); border-radius: 12px; background: var(--panel); min-width: 124px; }
.timer .t { font: 650 26px var(--mono); letter-spacing: 1px; color: var(--text); line-height: 1.2; }
.timer .l { font-size: 11.5px; color: var(--dim); text-transform: uppercase; letter-spacing: 1.5px; }
.timer.warn { border-color: var(--steel); }
.timer.warn .l, .timer.warn .t { color: var(--steel); }
.examBody { display: flex; flex-wrap: wrap; gap: 24px; padding: 28px 32px 40px; max-width: 1320px; margin: 0 auto; }
.main { flex: 999 1 560px; min-width: 0; }
.side { flex: 1 1 280px; min-width: 0; }
.qtext { font-size: 23px; line-height: 1.45; font-weight: 500; margin: 14px 0 24px; letter-spacing: -0.2px; }
.opt { display: flex; gap: 14px; align-items: flex-start; width: 100%; text-align: left; background: var(--panel); border: 1px solid var(--hair); border-radius: 12px;
  padding: 14px 16px; margin: 0 0 10px; color: var(--text); font: 500 17px/1.45 var(--font); cursor: pointer; min-height: 56px; }
.opt:hover { border-color: var(--steel); }
.ltr { flex: none; width: 30px; height: 30px; border-radius: 99px; border: 1px solid var(--hair); display: flex; align-items: center; justify-content: center; font-weight: 650; font-size: 14px; color: var(--dim); }
.opt.sel { background: var(--panel-active); border-color: var(--steel); }
.opt.sel .ltr { background: var(--steel); border-color: var(--steel); color: var(--navy); }
.navgrid { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 6px; margin: 10px 0 18px; }
.navgrid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.nav { height: 40px; border-radius: 8px; border: 1px solid var(--hair); background: transparent; color: var(--dim); font: 650 14px var(--font); cursor: pointer; position: relative; padding: 0; }
.nav:hover { border-color: var(--steel); }
.nav.done { background: var(--panel-active); color: var(--text); }
.nav.flag::after { content: ""; position: absolute; top: 4px; right: 4px; width: 7px; height: 7px; border-radius: 99px; background: var(--steel); }
.nav.cur { border-color: var(--white); box-shadow: inset 0 0 0 1px var(--white); }
.legend { display: flex; gap: 14px; flex-wrap: wrap; font-size: 13px; color: var(--dim); margin-top: 6px; }
.sw { display: inline-block; width: 14px; height: 14px; border-radius: 4px; border: 1px solid var(--hair); vertical-align: -2px; margin-right: 6px; }
.sw.done { background: var(--panel-active); }
.sw.flag { border-radius: 99px; background: var(--steel); border-color: var(--steel); width: 8px; height: 8px; vertical-align: 1px; }
.prompt { background: var(--panel); border: 1px solid var(--hair); border-radius: 14px; padding: 18px 20px; font-size: 17px; line-height: 1.6; margin: 12px 0 16px; }
.answer { min-height: 300px; padding: 16px 18px; font: 400 16px/1.65 var(--font); }
.bar { display: flex; gap: 12px; justify-content: space-between; align-items: center; flex-wrap: wrap; margin-top: 22px; padding-top: 20px; border-top: 1px solid var(--hair); }
.center { text-align: center; }
.center .actions { justify-content: center; }
.codeinput { font: 650 28px var(--mono); letter-spacing: 6px; text-transform: uppercase; text-align: center; }
@media (max-width: 760px) { .wrap { padding: 28px 16px 40px; } .top { padding: 12px 16px; } .examBody { padding: 20px 16px; } .qtext { font-size: 20px; } }