:root {
    --practice-green: #117a65;
    --practice-orange: #df7448;
    --practice-ink: #1e2c29;
    --practice-soft-ink: #67746f;
    --practice-wash: #f2f4ef;
}

:root[data-theme="dark"] {
    --practice-green: #75c5ad;
    --practice-orange: #f0a27d;
    --practice-ink: #e9f0ec;
    --practice-soft-ink: #a4b0ab;
    --practice-wash: #202c29;
}

.gate-practice-page {
    min-height: 100vh;
    overflow-x: hidden;
    font-family: "DM Sans", sans-serif;
    background: var(--site-bg) !important;
    color: var(--site-text) !important;
}

.gate-practice-page::before {
    background: radial-gradient(ellipse at 8% 0%, rgba(17, 122, 101, .09), transparent 35%), radial-gradient(ellipse at 96% 14%, rgba(223, 116, 72, .07), transparent 27%) !important;
}

.practice-header {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
    padding: 0 max(6vw, calc((100vw - 1240px) / 2));
    background: color-mix(in srgb, var(--site-surface) 92%, transparent);
    border-bottom: 1px solid var(--site-border);
    backdrop-filter: blur(14px);
}

.practice-brand {
    color: var(--practice-ink);
    font: 800 20px "Manrope", sans-serif;
    white-space: nowrap;
    text-decoration: none;
}

.practice-brand span { color: var(--practice-orange); }

.practice-header nav { display: flex; align-items: center; gap: 28px; }
.practice-header nav a { color: var(--site-muted); font-size: 14px; font-weight: 600; text-decoration: none; }
.practice-header nav a:hover, .practice-header nav a.active { color: var(--practice-green); }

.practice-shell { width: min(1180px, 88vw); margin: 0 auto; padding: 52px 0 36px; }
.practice-heading { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 28px; }
.eyebrow { display: flex; align-items: center; gap: 9px; margin-bottom: 13px; color: var(--practice-green); font-size: 11px; font-weight: 700; letter-spacing: 1.5px; }
.eyebrow span { width: 8px; height: 8px; border-radius: 50%; background: var(--practice-orange); }
.practice-heading h1 { color: var(--practice-ink); font: 800 clamp(30px, 4vw, 46px)/1.12 "Manrope", sans-serif; letter-spacing: 0; }
.practice-heading h1 span { color: var(--practice-green); }
.intro { margin-top: 12px; color: var(--practice-soft-ink); font-size: 15px; }
.question-count { display: grid; gap: 2px; flex: 0 0 auto; padding: 10px 0 4px 20px; border-left: 2px solid var(--practice-orange); }
.question-count strong { color: var(--practice-ink); font: 800 23px "Manrope", sans-serif; }
.question-count span { color: var(--practice-soft-ink); font-size: 12px; }

.practice-controls { display: flex; align-items: end; gap: 12px; padding: 16px 18px; margin-bottom: 18px; background: var(--site-surface); border: 1px solid var(--site-border); border-radius: 8px; }
.filter-field { display: grid; gap: 6px; min-width: 150px; color: var(--site-muted); font-size: 11px; font-weight: 700; }
.filter-field select { width: 100%; height: 38px; padding: 0 30px 0 10px; border: 1px solid var(--site-border); border-radius: 5px; background: var(--site-bg); color: var(--site-text); font: 500 13px "DM Sans", sans-serif; }
.reset-button, .secondary-button, .review-button, .primary-button, .finish-button { display: inline-flex; align-items: center; justify-content: center; gap: 9px; min-height: 40px; border: 1px solid var(--site-border); border-radius: 5px; font: 700 13px "DM Sans", sans-serif; cursor: pointer; transition: transform .18s ease, background .18s ease, border-color .18s ease; }
.reset-button:hover, .secondary-button:hover, .review-button:hover, .primary-button:hover, .finish-button:hover { transform: translateY(-1px); }
.reset-button { margin-left: auto; padding: 0 13px; background: transparent; color: var(--site-muted); }
.practice-layout { display: grid; grid-template-columns: minmax(0, 1fr) 270px; gap: 18px; align-items: start; }
.question-panel, .progress-panel { background: var(--site-surface); border: 1px solid var(--site-border); border-radius: 8px; }
.question-panel { min-height: 468px; padding: 27px 30px 20px; }
.question-topline { display: flex; align-items: center; gap: 8px; margin-bottom: 21px; }
.question-number { color: var(--site-muted); font-size: 12px; font-weight: 700; }
.question-tag { padding: 4px 8px; border-radius: 3px; background: var(--practice-wash); color: var(--practice-green); font-size: 10px; font-weight: 700; }
.question-type { margin-left: auto; color: var(--site-muted); font-size: 11px; font-weight: 700; }
.question-prompt { max-width: 760px; color: var(--practice-ink); font: 600 19px/1.65 "Manrope", sans-serif; letter-spacing: 0; }
.question-figure { display: block; width: min(100%, 520px); max-height: 480px; margin: 18px auto; border: 1px solid var(--site-border); border-radius: 4px; object-fit: contain; }
.question-instruction { margin: 9px 0 16px; color: var(--site-muted); font-size: 12px; }
.answer-options { display: grid; gap: 9px; margin-top: 19px; }
.answer-option { display: flex; align-items: flex-start; gap: 12px; width: 100%; padding: 12px 14px; border: 1px solid var(--site-border); border-radius: 5px; background: transparent; color: var(--site-text); text-align: left; font: 500 14px/1.55 "DM Sans", sans-serif; cursor: pointer; }
.answer-option:hover { border-color: var(--practice-green); background: color-mix(in srgb, var(--practice-green) 5%, transparent); }
.answer-option.selected { border-color: var(--practice-green); background: color-mix(in srgb, var(--practice-green) 9%, transparent); }
.answer-option.correct { border-color: var(--practice-green); background: color-mix(in srgb, var(--practice-green) 12%, transparent); }
.answer-option.incorrect { border-color: #c75a4b; background: rgba(199, 90, 75, .08); }
.option-key { display: grid; place-items: center; flex: 0 0 23px; height: 23px; border: 1px solid var(--site-border); border-radius: 50%; color: var(--site-muted); font-size: 11px; font-weight: 700; }
.answer-option.selected .option-key { border-color: var(--practice-green); background: var(--practice-green); color: #fff; }
.answer-option.correct .option-key { border-color: var(--practice-green); background: var(--practice-green); color: #fff; }
.answer-option.incorrect .option-key { border-color: #c75a4b; color: #c75a4b; }
.nat-answer { width: min(300px, 100%); height: 43px; padding: 0 12px; border: 1px solid var(--site-border); border-radius: 5px; background: var(--site-bg); color: var(--site-text); font: 500 15px "DM Sans", sans-serif; }
.explanation { margin-top: 17px; padding: 14px 16px; border-left: 3px solid var(--practice-green); background: var(--practice-wash); color: var(--site-text); font-size: 13px; line-height: 1.65; }
.explanation strong { color: var(--practice-green); }
.question-actions { display: flex; align-items: center; justify-content: space-between; gap: 9px; margin-top: 23px; padding-top: 16px; border-top: 1px solid var(--site-border); }
.secondary-button, .review-button { padding: 0 13px; background: transparent; color: var(--site-muted); }
.review-button.marked { border-color: var(--practice-orange); color: var(--practice-orange); }
.primary-button { padding: 0 16px; border-color: var(--practice-green); background: var(--practice-green); color: #fff; }
.primary-button:disabled, .secondary-button:disabled { opacity: .45; cursor: not-allowed; transform: none; }

.progress-panel { padding: 20px 18px 17px; }
.progress-title, .question-map-heading { display: flex; align-items: center; justify-content: space-between; }
.progress-title h2, .question-map-heading h3 { color: var(--practice-ink); font: 700 15px "Manrope", sans-serif; letter-spacing: 0; }
.progress-title span { color: var(--practice-green); font-size: 12px; font-weight: 700; }
.progress-track { height: 6px; margin: 14px 0 17px; overflow: hidden; border-radius: 5px; background: var(--practice-wash); }
.progress-track span { display: block; width: 0; height: 100%; border-radius: inherit; background: var(--practice-green); transition: width .3s ease; }
.progress-stats { display: grid; grid-template-columns: repeat(3, 1fr); padding-bottom: 17px; border-bottom: 1px solid var(--site-border); }
.progress-stats div { display: grid; gap: 2px; }
.progress-stats strong { color: var(--practice-ink); font: 700 18px "Manrope", sans-serif; }
.progress-stats span, .question-map-heading > span { color: var(--site-muted); font-size: 10px; }
.question-map-heading { margin: 16px 0 11px; }
.question-map { display: grid; grid-template-columns: repeat(5, 1fr); gap: 7px; }
.map-question { aspect-ratio: 1; border: 1px solid var(--site-border); border-radius: 4px; background: transparent; color: var(--site-muted); font: 700 12px "DM Sans", sans-serif; cursor: pointer; }
.map-question.current { outline: 2px solid var(--practice-orange); outline-offset: 1px; }
.map-question.answered { border-color: var(--practice-green); background: var(--practice-green); color: #fff; }
.map-question.review { border-color: var(--practice-orange); background: color-mix(in srgb, var(--practice-orange) 12%, transparent); color: var(--practice-orange); }
.map-question.answered.review { border-color: var(--practice-orange); background: var(--practice-green); box-shadow: inset 0 -3px var(--practice-orange); color: #fff; }
.map-legend { display: flex; align-items: center; gap: 6px; margin: 12px 0 15px; color: var(--site-muted); font-size: 10px; }
.legend-dot { width: 8px; height: 8px; margin-left: 6px; border-radius: 2px; background: var(--practice-green); }
.legend-dot:first-child { margin-left: 0; }
.review-dot { background: var(--practice-orange); }
.finish-button { width: 100%; justify-content: space-between; padding: 0 12px; border-color: var(--site-border); background: var(--practice-wash); color: var(--practice-ink); }
.source-note { display: flex; gap: 9px; margin: 16px 0 0; color: var(--site-muted); font-size: 12px; line-height: 1.6; }
.source-note i { margin-top: 3px; color: var(--practice-orange); }
.results-panel { margin-top: 18px; padding: 22px 25px; border: 1px solid var(--site-border); border-radius: 8px; background: var(--site-surface); }
.results-panel h2 { color: var(--practice-ink); font: 700 20px "Manrope", sans-serif; }
.results-panel p { margin-top: 7px; color: var(--site-muted); font-size: 14px; }
.results-panel strong { color: var(--practice-green); }
.empty-state { padding: 60px 18px; color: var(--site-muted); text-align: center; }
.empty-state strong { display: block; margin-bottom: 6px; color: var(--practice-ink); font: 700 16px "Manrope", sans-serif; }
.official-papers { margin-top: 42px; padding-top: 27px; border-top: 1px solid var(--site-border); }
.papers-heading { display: flex; align-items: end; justify-content: space-between; gap: 22px; margin-bottom: 19px; }
.papers-heading .eyebrow { margin-bottom: 8px; }
.papers-heading h2 { color: var(--practice-ink); font: 800 25px "Manrope", sans-serif; }
.papers-heading > p { max-width: 330px; color: var(--site-muted); font-size: 12px; line-height: 1.6; }
.paper-year-group { display: grid; grid-template-columns: 185px minmax(0, 1fr); gap: 18px; padding: 19px 0; border-top: 1px solid var(--site-border); }
.paper-year-label { display: grid; align-content: start; gap: 4px; }
.paper-year-label strong { color: var(--practice-ink); font: 800 22px "Manrope", sans-serif; }
.paper-year-label span { color: var(--site-muted); font-size: 11px; }
.paper-links { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 9px; }
.paper-links a { display: flex; align-items: center; justify-content: space-between; gap: 10px; min-height: 62px; padding: 10px 12px; border: 1px solid var(--site-border); border-radius: 5px; color: var(--site-text); text-decoration: none; }
.paper-links a:hover { border-color: var(--practice-green); background: color-mix(in srgb, var(--practice-green) 5%, transparent); }
.paper-links a span { display: grid; gap: 3px; }
.paper-links a strong { color: var(--practice-ink); font-size: 12px; }
.paper-links a small { color: var(--site-muted); font-size: 10px; }
.paper-links a > i { flex: 0 0 auto; color: var(--practice-green); font-size: 11px; }
.papers-footnote { padding-top: 12px; color: var(--site-muted); font-size: 11px; }

@media (max-width: 760px) {
    .gate-practice-page > .practice-header { height: 60px !important; padding: 0 64px 0 6vw !important; justify-content: space-between !important; }
    .practice-header nav { gap: 15px; }
    .practice-header nav a { font-size: 12px; }
    .practice-shell { width: 90vw; padding-top: 34px; }
    .practice-heading { align-items: start; }
    .practice-heading h1 { max-width: 470px; font-size: 34px; }
    .question-count { padding-left: 12px; }
    .question-count span { max-width: 90px; }
    .practice-controls { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .filter-field { min-width: 0; }
    .reset-button { margin-left: 0; }
    .practice-layout { grid-template-columns: 1fr; }
    .question-panel { min-height: 0; padding: 21px 18px 16px; }
    .question-prompt { font-size: 17px; }
    .progress-stats { padding-bottom: 12px; }
    .question-map { grid-template-columns: repeat(10, minmax(25px, 1fr)); }
    .map-question { max-height: 34px; }
    .papers-heading { align-items: start; flex-direction: column; gap: 8px; }
    .paper-year-group { grid-template-columns: 1fr; gap: 10px; }
}

@media (max-width: 430px) {
    .gate-practice-page .site-theme-toggle { top: 11px; right: 10px; width: 36px; min-width: 36px; min-height: 36px; padding: 0; }
    .practice-brand { font-size: 17px; }
    .practice-header nav { gap: 11px; }
    .practice-header nav a { font-size: 11px; }
    .practice-heading { display: block; }
    .question-count { display: flex; align-items: baseline; gap: 8px; width: fit-content; margin-top: 17px; padding: 0; border: 0; }
    .question-count strong { font-size: 18px; }
    .question-actions { flex-wrap: wrap; }
    .question-actions button { flex: 1 1 auto; }
    .review-button { order: 3; }
    .paper-links { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
}