.f01 { --ink: #2b2520; --jade: #196452; --jade-pale: #e8f2eb; --cream: #f8f4ec; --gold: #a98955; color: var(--ink); max-width: 920px; padding-bottom: 48px; }
.f01 * { min-width: 0; }
.f01 .back-link { display: inline-flex; margin-bottom: 24px; color: var(--jade); font-size: 13px; font-weight: 700; text-decoration: none; }
.f01 h1, .f01 h2, .f01 h3 { letter-spacing: -.035em; }
.f01 h1 { font-family: Georgia, serif; font-weight: 400; font-size: clamp(2.45rem, 5vw, 4.75rem); line-height: 1.05; margin: 14px 0 22px; }
.f01 h1 em { color: var(--jade); font-weight: 400; }
.f01 h2 { font-size: clamp(1.3rem, 2vw, 1.9rem); line-height: 1.2; }
.f01 h3 { font-size: 1.02rem; }
.f01 p { line-height: 1.7; }
.f01-kicker { color: var(--jade); font-size: .69rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.f01-hero, .f01-lesson-head { position: relative; overflow: hidden; border-radius: 24px; padding: clamp(28px, 5vw, 58px); background: radial-gradient(circle at 85% 15%, #d8e7db 0, transparent 40%), linear-gradient(145deg, #f8f5ec, #e7eee7); }
.f01-hero::after { content: ''; position: absolute; right: -34px; bottom: -110px; width: 250px; height: 250px; border: 25px solid #a0c8a9; border-radius: 50%; opacity: .36; pointer-events: none; }
.f01-hero > *, .f01-lesson-head > * { position: relative; z-index: 1; }
.f01-hero > p:not(.f01-kicker), .f01-lesson-head > p:not(.f01-kicker) { max-width: 650px; font-size: clamp(1rem, 1.5vw, 1.15rem); }
.f01-lesson-head .f01-goal-label { color: var(--jade); font-size: .78rem !important; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; margin-bottom: 3px; }
.f01-lesson-head .f01-goal-detail { max-width: 650px; color: #4e5d51; font-size: .98rem !important; margin-top: 0; }
.f01-hero-meta, .f01-stages { display: flex; gap: 9px; flex-wrap: wrap; margin-top: 32px; }
.f01-hero-meta span, .f01-stages span { border: 1px solid #aec4b5; background: #ffffffa6; border-radius: 100px; padding: 7px 13px; font-size: .73rem; font-weight: 700; }
.f01-course-intro { margin: 28px 0 50px; padding: clamp(25px, 4vw, 38px); border-radius: 20px; background: #2d2925; color: #fbf8f1; }
.f01-course-intro h2 { color: #fff; }
.f01-course-intro p { max-width: 660px; color: #ddd8cf; }
.f01-course-intro .button.primary { background: #b7dac3; color: #1c3529; }
.f01-module-list { display: grid; gap: 22px; margin-bottom: 26px; }
.f01-module { border: 1px solid #d8dfd8; border-radius: 20px; overflow: hidden; background: #fffdf9; box-shadow: 0 12px 34px #2133250b; }
.f01-module-heading { display: flex; gap: 20px; align-items: center; padding: 25px 28px; background: #f4f3ec; }
.f01-module-heading > span { color: var(--gold); font: 2rem Georgia, serif; }
.f01-module-heading .f01-kicker { margin: 0 0 5px; }
.f01-module-heading h2 { margin: 0; }
.f01-module ol { list-style: none; margin: 0; padding: 5px 27px 18px; }
.f01-module li + li { border-top: 1px solid #e6e9e4; }
.f01-module li a { display: grid; grid-template-columns: 32px minmax(0, 1fr) auto; align-items: center; gap: 15px; min-height: 67px; padding: 11px 0; text-decoration: none; color: var(--ink); }
.f01-module li a:hover strong, .f01-results-grid a:hover strong { color: var(--jade); text-decoration: underline; }
.f01-module li a > span { color: var(--jade); font: 1.18rem Georgia, serif; }
.f01-module li small { color: #67736a; text-align: right; }
.f01-reading { max-width: 760px; margin: 35px auto; }
.f01-reading > section, .f01-reading > details, .f01-reading > form, .f01-score-strip { margin-bottom: 24px; }
.f01-teaching, .f01-card, .f01-example, .f01-visual, .f01-next, .f01-report, .f01-depth { padding: clamp(22px, 4vw, 40px); border-radius: 18px; border: 1px solid #dde3dc; background: #fffefa; }
.f01-teaching { border-left: 5px solid #7aa98a; }
.f01-teaching > div { padding: 15px 0; border-top: 1px solid #e7e9e1; }
.f01-teaching > div p { margin-bottom: 0; }
.f01-example { background: var(--cream); }
.f01-example blockquote { margin: 24px 0; padding: 5px 0 5px 23px; border-left: 3px solid var(--gold); font-family: Georgia, serif; font-size: 1.15rem; line-height: 1.5; }
.f01-case { border-left: 5px solid var(--gold); }
.f01-case-situation { padding: 18px 21px; border-radius: 12px; background: var(--cream); font-size: 1.04rem; }
.f01-word-challenge { margin: 24px 0; padding: clamp(18px, 3vw, 27px); border: 1px solid #c8d8cb; border-radius: 16px; background: #f5faf5; }
.f01-word-challenge h3 { margin-top: 0; font-size: 1.14rem; }
.f01-word-challenge > p { color: #45584c; }
.f01-word-sentence { margin: 22px 0; font-size: 1.07rem; font-weight: 650; line-height: 2.7; }
.f01-word-slot { display: inline-flex; align-items: center; justify-content: center; max-width: 100%; min-height: 43px; margin: 3px 4px; padding: 4px 13px; border: 2px dashed #8fab96; border-radius: 11px; background: #fff; color: #355344; font: inherit; font-size: .91rem; line-height: 1.3; vertical-align: middle; white-space: normal; text-align: center; }
.f01-word-slot.is-filled { border-style: solid; border-color: var(--jade); background: #e4f0e7; color: #174936; }
.f01-word-slot.is-wrong { border-color: #a44e40; background: #fff0eb; color: #713e33; }
.f01-word-bank { display: flex; flex-wrap: wrap; gap: 9px; padding: 17px; border-radius: 12px; background: #fffefa; border: 1px solid #e1e7dd; }
.f01-word-bank button { max-width: 100%; border: 1px solid #8da998; border-radius: 100px; background: #fff; color: #205540; padding: 9px 14px; font-weight: 750; line-height: 1.3; text-align: left; cursor: grab; }
.f01-word-bank button:disabled { opacity: 1; cursor: default; text-decoration: line-through; }
.f01-word-selection { min-height: 1.5em; margin: 10px 0 0; color: #355344; font-size: .88rem; font-weight: 650; }
.f01-word-actions { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 17px; }
.f01-word-feedback { margin: 14px 0 0; padding: 13px 16px; border-radius: 10px; background: #e7f0e8; color: #234a37; font-weight: 650; }
.f01-word-feedback:empty { display: none; }
.f01-word-slot:focus-visible, .f01-word-bank button:focus-visible { outline: 3px solid #b07e35; outline-offset: 3px; }
.f01-model-answer, .f01-previous-note { margin-top: 20px; padding: 17px 20px; border: 1px solid #b8cbbb; border-radius: 12px; background: #f3f8f2; }
.f01-model-answer summary, .f01-previous-note summary { color: var(--jade); font-weight: 800; cursor: pointer; }
.f01-model-answer[open] summary, .f01-previous-note[open] summary { margin-bottom: 15px; }
.f01-previous-note { background: #f7f5ef; border-color: #d9d3c6; }
.f01-previous-note pre { white-space: pre-wrap; overflow-wrap: anywhere; font: inherit; line-height: 1.55; }
.f01-visual { background: var(--jade-pale); }
.f01-time-control { margin: 22px 0 24px; padding: 20px 22px; border: 1px solid #bfd2c3; border-radius: 14px; background: #fffefa; }
.f01-time-control label { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; font-weight: 750; }
.f01-time-control output { color: var(--jade); font: 1.4rem Georgia, serif; white-space: nowrap; }
.f01-time-control input[type=range] { display: block; width: 100%; margin: 19px 0 8px; accent-color: var(--jade); }
.f01-week-days { min-width: 0; margin: 22px 0; padding: 0; border: 0; }
.f01-week-days legend { margin-bottom: 12px; color: #355344; font-weight: 750; }
.f01-week-days > div { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 7px; }
.f01-week-days label { min-width: 0; cursor: pointer; }
.f01-week-days input { position: absolute; width: 1px; height: 1px; min-height: 0; padding: 0; opacity: 0; }
.f01-week-days span { display: grid; justify-items: center; gap: 7px; padding: 8px 2px; border: 1px solid #c8d8cb; border-radius: 12px; background: #fffefa; color: #4e6454; font-size: .7rem; font-weight: 800; }
.f01-week-days i { display: block; width: min(100%, 34px); aspect-ratio: 1; border-radius: 50%; border: 1px solid #9fbaa5; background: #fff; }
.f01-week-days input:checked + span { border-color: #7ea78b; background: #e5f1e7; color: #174936; }
.f01-week-days input:checked + span i { background: radial-gradient(circle at 35% 30%, #e8f4e9, #81ae90); box-shadow: 0 4px 9px #1a604322; }
.f01-week-days input:focus-visible + span { outline: 3px solid #b07e35; outline-offset: 3px; }
.f01-time-totals { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.f01-time-totals div { display: grid; gap: 7px; padding: 19px 22px; border-radius: 14px; background: #fffefa; border: 1px solid #ccddd0; }
.f01-time-totals span { color: #526a58; font-size: .76rem; font-weight: 800; text-transform: uppercase; letter-spacing: .07em; }
.f01-time-totals output { color: #174c38; font: clamp(1.45rem, 4vw, 2.1rem) Georgia, serif; }
.f01-time-insight { margin: 20px 0 10px; padding: 18px 21px; border-left: 4px solid var(--gold); border-radius: 9px; background: #fffefa; font-weight: 650; }
.f01-time-assumptions { color: #536558; font-size: .84rem; }
.f01-choices, .f01-comparison { display: flex; flex-wrap: wrap; gap: 9px; margin: 20px 0; }
.f01-choices button { border-color: #9db8a6; border-radius: 100px; background: #fff; color: var(--jade); }
.f01-choices button[aria-pressed=true] { color: #fff; background: var(--jade); }
.f01-visual-result { background: #fffdf9; border-radius: 12px; padding: 16px; }
.f01-comparison > div { flex: 1 1 220px; padding: 18px; background: #fffdf9; border-radius: 12px; }
.f01-card fieldset, .f01-test-form fieldset { border: 0; padding: 0; margin: 0; }
.f01-card legend, .f01-test-form legend { font-size: 1.08rem; font-weight: 700; margin-bottom: 17px; }
.f01-test-form legend span { color: var(--gold); font: 1.5rem Georgia, serif; margin-right: 13px; }
.f01-option { display: flex; align-items: flex-start; gap: 13px; padding: 14px; margin: 7px 0; border: 1px solid #d8dfd6; border-radius: 12px; cursor: pointer; background: #fff; font-weight: 500; line-height: 1.45; }
.f01-option:has(input:checked) { border-color: var(--jade); background: var(--jade-pale); }
.f01-option input { width: 18px; height: 18px; min-height: 18px; flex: none; margin: 2px 0 0; padding: 0; accent-color: var(--jade); }
.f01-option span { color: var(--jade); font-weight: 800; }
.f01-feedback, .f01-result { display: block; margin-top: 20px; padding: 17px; background: var(--jade-pale); border-radius: 12px; }
.f01-feedback:empty, .f01-result:empty { display: none; }
.f01 textarea { display: block; width: 100%; min-height: 125px; padding: 15px; margin: 10px 0 17px; resize: vertical; border: 1px solid #b8c9bd; border-radius: 11px; background: #fff; color: var(--ink); font: inherit; line-height: 1.5; }
.f01 textarea:focus-visible { outline: 3px solid var(--jade); }
.f01-self-check { margin-top: 25px; padding-top: 23px; border-top: 1px solid #e3e6de; }
.f01-idea-guide { margin: 20px 0; padding: 16px 19px; border-left: 3px solid var(--jade); border-radius: 8px; background: var(--jade-pale); }
.f01-idea-guide p { margin: 6px 0 0; }
.f01-self-check li { margin: 7px 0; }
.f01-depth summary { color: var(--jade); font-weight: 700; cursor: pointer; }
.f01-next { background: #edf2e8; }
.f01-report { border-style: dashed; }
.f01-report select { display: block; margin: 10px 0 18px; }
.f01-score-strip { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.f01-score-strip > div { padding: 20px; border-radius: 13px; background: #e9efe8; }
.f01-score-strip span { display: block; color: #52645a; font-size: .75rem; }
.f01-score-strip strong { font: 1.8rem Georgia, serif; }
.f01-result ol { padding-left: 24px; }
.f01-results-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin: 28px 0; }
.f01-results-grid a { display: grid; gap: 10px; padding: 21px; border: 1px solid #d9e1d9; border-radius: 14px; background: #fffefa; color: var(--ink); text-decoration: none; }
.f01-results-grid small { color: #68766c; }
.f01-history { padding-left: 24px; }
.f01-history li { padding: 14px 0; border-bottom: 1px solid #dce3db; }
.f01-history li span, .f01-history li time { display: block; color: #58675d; font-size: .83rem; margin-top: 5px; }
@media (max-width: 700px) { .f01-hero, .f01-lesson-head { border-radius: 16px; } .f01-module li a { grid-template-columns: 27px minmax(0,1fr); gap: 9px; } .f01-module li small { grid-column: 2; text-align: left; } .f01-results-grid { grid-template-columns: 1fr; } .f01-score-strip > div { padding: 13px; } .f01-hero::after { opacity: .18; } .f01-time-control label { flex-wrap: wrap; } .f01-time-totals div { padding: 14px; } .f01-word-sentence { line-height: 2.4; } }
@media (prefers-reduced-motion: reduce) { .f01 *, .f01 *::before, .f01 *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; } }