:root{--forest:#0b3d2e;--deep:#06271d;--pine:#14543f;--mint:#c9f5d7;--mint-2:#e8f8ed;--lime:#79dd9a;--cream:#f5f7f3;--white:#fff;--ink:#132019;--muted:#63716a;--line:#d8e2dc;--blue:#dcecf2;--amber:#ffe9b8;--rose:#f5dddd;--shadow:0 18px 50px rgba(11,61,46,.11);--radius:22px;--shell:min(1180px,calc(100vw - 40px));color-scheme:light}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--cream);font-family:"SF Pro Text","PingFang SC","Microsoft YaHei",system-ui,sans-serif;-webkit-font-smoothing:antialiased}a{color:inherit}button,input,select{font:inherit}button{color:inherit}.skip-link{position:fixed;left:16px;top:-80px;z-index:100;padding:12px 16px;background:white;border-radius:10px}.skip-link:focus{top:12px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.shell{width:var(--shell);margin-inline:auto}.view[hidden]{display:none!important}.eyebrow{margin:0 0 14px;font:750 11px/1.2 "SFMono-Regular",Consolas,monospace;letter-spacing:.18em;text-transform:uppercase;color:#3c745f}.site-header{position:sticky;top:0;z-index:30;width:100%;height:76px;padding:0 max(20px,calc((100vw - 1180px)/2));display:flex;align-items:center;gap:44px;background:rgba(245,247,243,.92);backdrop-filter:blur(18px);border-bottom:1px solid rgba(11,61,46,.13)}.brand{display:inline-flex;align-items:center;gap:12px;text-decoration:none}.brand-mark{width:40px;height:40px;padding:8px;display:flex;align-items:center;justify-content:center;gap:3px;background:var(--forest);border-radius:12px}.brand-mark i{width:3px;border-radius:3px;background:var(--mint);height:var(--h)}.brand-mark i:nth-child(1){--h:38%}.brand-mark i:nth-child(2){--h:76%}.brand-mark i:nth-child(3){--h:100%}.brand-mark i:nth-child(4){--h:58%}.brand strong,.brand small{display:block}.brand strong{font-size:13px;line-height:1;letter-spacing:.12em;white-space:nowrap}.brand small{margin-top:5px;font:700 9px/1 monospace;letter-spacing:.14em;color:var(--muted)}.main-nav{display:flex;align-self:stretch;gap:4px}.main-nav a{position:relative;min-width:64px;padding:0 12px;display:grid;place-items:center;text-decoration:none;font-size:13px;font-weight:650;color:var(--muted)}.main-nav a:hover,.main-nav a.is-active{color:var(--forest)}.main-nav a.is-active:after{content:"";position:absolute;left:16px;right:16px;bottom:-1px;height:3px;background:var(--forest);border-radius:3px 3px 0 0}.account-button{margin-left:auto;padding:8px 12px;border:1px solid var(--line);background:var(--white);border-radius:9px;font-size:12px;cursor:pointer}.account-button:hover{border-color:var(--forest)}
.home-view{padding-bottom:90px}.home-hero{min-height:580px;padding:88px 0 70px;display:grid;grid-template-columns:minmax(0,1.15fr) minmax(420px,.85fr);gap:70px;align-items:center}.home-copy h1,.compact-hero h1,.page-bar h1,.knowledge-hero h1,.coming-card h1{margin:0;font-family:"Arial Rounded MT Bold","PingFang SC",system-ui,sans-serif;letter-spacing:-.06em}.home-copy h1{font-size:clamp(58px,7vw,98px);line-height:.98}.home-copy h1 em{font-style:normal;color:var(--forest)}.home-copy>p:not(.eyebrow){max-width:590px;margin:26px 0 0;color:var(--muted);font-size:17px;line-height:1.8}.primary-action{display:inline-flex;align-items:center;gap:22px;margin-top:32px;padding:14px 20px;color:white;background:var(--forest);border-radius:12px;text-decoration:none;font-weight:750}.primary-action span{transition:transform .2s}.primary-action:hover span{transform:translateX(4px)}.skill-orbit{position:relative;aspect-ratio:1;max-width:440px;margin:auto;border:1px solid #b9c9c1;border-radius:50%}.skill-orbit:before,.skill-orbit:after{content:"";position:absolute;inset:17%;border:1px dashed #c7d3cd;border-radius:50%}.skill-orbit:after{inset:36%;background:var(--mint);border:0}.orbit-center{position:absolute;inset:38%;z-index:2;display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--forest)}.orbit-center span,.orbit-center small{font:750 9px/1 monospace;letter-spacing:.14em}.orbit-center strong{font-size:50px;line-height:.92;letter-spacing:-.08em}.orbit-pill{position:absolute;padding:9px 13px;background:white;border:1px solid var(--line);border-radius:99px;font:700 11px/1 monospace;color:var(--muted);box-shadow:0 5px 18px rgba(11,61,46,.06)}.orbit-pill.active{color:white;background:var(--forest);border-color:var(--forest)}.orbit-pill:nth-of-type(1){left:0;top:26%}.orbit-pill:nth-of-type(2){right:-2%;top:20%}.orbit-pill:nth-of-type(3){left:9%;bottom:12%}.orbit-pill:nth-of-type(4){right:1%;bottom:18%}.skills-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.skill-card{min-height:260px;padding:24px;display:flex;flex-direction:column;text-decoration:none;background:white;border:1px solid var(--line);border-radius:var(--radius);transition:transform .2s,box-shadow .2s,border-color .2s}.skill-card:hover{transform:translateY(-4px);border-color:#aac1b6;box-shadow:var(--shadow)}.listening-card{color:white;background:var(--forest);border-color:var(--forest)}.skill-number{font:750 11px/1 monospace;color:var(--muted)}.listening-card .skill-number{color:#9fceb9}.status-badge{align-self:flex-end;margin-top:-20px;padding:5px 8px;border-radius:99px;background:#eef2ef;font-size:10px;color:var(--muted)}.status-badge.live{color:var(--forest);background:var(--mint)}.skill-card h2{margin:54px 0 10px;font-size:22px;letter-spacing:-.035em}.skill-card p{margin:0;font-size:13px;line-height:1.65;color:var(--muted)}.listening-card p{color:#add2c0}.card-action{margin-top:auto;padding-top:22px;font-size:12px;font-weight:750}.is-coming{background:#f9fbf9}
.listening-view{padding:70px 0 100px}.compact-hero{padding:34px 0 64px;display:flex;align-items:end;justify-content:space-between;gap:40px}.compact-hero h1{font-size:clamp(52px,6vw,82px);line-height:1}.compact-hero>div>p:last-child{max-width:660px;margin:20px 0 0;color:var(--muted);line-height:1.7}.sound-meter{height:92px;width:240px;display:flex;align-items:center;gap:6px}.sound-meter i{flex:1;height:var(--h,45%);background:var(--forest);border-radius:99px;animation:meter 2.4s ease-in-out infinite alternate}.sound-meter i:nth-child(1),.sound-meter i:nth-child(10){--h:25%}.sound-meter i:nth-child(2),.sound-meter i:nth-child(9){--h:48%}.sound-meter i:nth-child(3),.sound-meter i:nth-child(8){--h:78%}.sound-meter i:nth-child(4),.sound-meter i:nth-child(7){--h:42%}.sound-meter i:nth-child(5){--h:95%}.sound-meter i:nth-child(6){--h:63%}.feature-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:14px}.feature-card{position:relative;min-height:270px;padding:26px;display:flex;flex-direction:column;text-decoration:none;background:white;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:transform .2s,box-shadow .2s,border-color .2s}.feature-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#adc3b8}.feature-card:nth-child(1){grid-column:span 7}.feature-card:nth-child(2){grid-column:span 5;background:var(--mint-2)}.feature-card:nth-child(3){grid-column:span 4}.feature-card:nth-child(4){grid-column:span 4;background:var(--deep);color:white}.feature-card:nth-child(5){grid-column:span 4;background:#e4edf0}.feature-index{position:absolute;right:24px;top:20px;font:800 34px/1 "Arial Rounded MT Bold",sans-serif;color:#d6e0db}.external-card .feature-index{color:#356454}.feature-card h2{margin:32px 0 10px;font-size:29px;letter-spacing:-.045em}.feature-card>p:not(.eyebrow){max-width:500px;margin:0;font-size:13px;line-height:1.7;color:var(--muted)}.external-card>p:not(.eyebrow){color:#a5c4b7}.text-link{margin-top:auto;padding-top:24px;font-size:12px;font-weight:750}.mode-links{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:auto;padding-top:24px}.mode-links a{padding:16px;text-decoration:none;background:var(--cream);border-radius:13px}.mode-links a:hover{background:var(--mint)}.mode-links strong,.mode-links span{display:block}.mode-links strong{font-size:14px}.mode-links span{margin-top:6px;font-size:10px;color:var(--muted)}
.content-view{min-height:calc(100vh - 76px);padding:54px 0 100px}.page-bar{padding:24px 0 44px;display:flex;align-items:end;justify-content:space-between;gap:36px}.back-link{display:inline-block;margin-bottom:28px;color:var(--muted);text-decoration:none;font-size:12px}.back-link:hover{color:var(--forest)}.page-bar h1{font-size:clamp(45px,5vw,68px);line-height:1}.page-bar>div>p:last-child{max-width:690px;margin:18px 0 0;color:var(--muted);line-height:1.7}.stat-block{min-width:150px;padding:20px;background:white;border:1px solid var(--line);border-radius:16px}.stat-block strong,.stat-block span{display:block}.stat-block strong{font-size:36px;letter-spacing:-.06em}.stat-block span{margin-top:4px;font-size:11px;color:var(--muted)}.exam-group+.exam-group{margin-top:52px}.month-heading{display:flex;align-items:center;gap:15px;margin:0 0 16px}.month-heading h2{margin:0;font-size:15px}.month-heading span{flex:1;height:1px;background:var(--line)}.month-heading small{color:var(--muted)}.exam-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.exam-card{min-height:150px;display:grid;grid-template-columns:88px 1fr 135px;align-items:stretch;background:white;border:1px solid var(--line);border-radius:18px;overflow:hidden;transition:transform .2s,box-shadow .2s}.exam-card:hover{transform:translateY(-2px);box-shadow:var(--shadow)}.exam-date{display:flex;flex-direction:column;align-items:center;justify-content:center;background:var(--mint-2);border-right:1px solid var(--line)}.exam-date strong{font-size:31px;letter-spacing:-.06em}.exam-date span{margin-top:6px;font-size:10px;color:var(--muted)}.exam-card>div:nth-child(2){padding:22px 18px}.exam-kicker{margin:0;font:700 9px/1 monospace;letter-spacing:.12em;color:#4d7b68}.exam-card h3{margin:12px 0 5px;font-size:19px}.exam-detail{margin:0;font-size:11px;color:var(--muted)}.issue-note{margin:8px 0 0;color:#8a4b08;font-size:10px}.exam-card>a{padding:18px;display:flex;flex-direction:column;justify-content:center;color:white;background:var(--forest);text-decoration:none}.exam-card>a span{font-size:13px;font-weight:750}.exam-card>a small{margin-top:7px;color:#a6cbb9;font-size:9px}
.drill-layout{display:grid;grid-template-columns:320px 1fr;gap:18px;align-items:start}.drill-picker,.drill-stage{background:white;border:1px solid var(--line);border-radius:var(--radius)}.drill-picker{position:sticky;top:96px;padding:24px}.drill-picker fieldset{margin:0 0 26px;padding:0;border:0}.drill-picker legend{margin-bottom:12px;font-size:12px;font-weight:750}.stack-options{display:grid;gap:8px}.choice-button{width:100%;padding:13px 14px;display:flex;align-items:center;justify-content:space-between;border:1px solid var(--line);background:var(--cream);border-radius:11px;cursor:pointer;text-align:left}.choice-button small{color:var(--muted)}.choice-button.is-active{color:white;background:var(--forest);border-color:var(--forest)}.choice-button.is-active small{color:#afd0c0}.difficulty-options{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}.difficulty-button{padding:11px 5px;border:1px solid var(--line);background:white;border-radius:10px;cursor:pointer;font-size:11px;font-weight:750}.difficulty-button[data-value=easy].is-active{background:var(--mint);border-color:#8cd8a7}.difficulty-button[data-value=medium].is-active{background:var(--amber);border-color:#e6c878}.difficulty-button[data-value=hard].is-active{background:var(--rose);border-color:#d8aaa8}.primary-button{width:100%;padding:13px 18px;border:0;color:white;background:var(--forest);border-radius:11px;font-weight:750;cursor:pointer}.primary-button:disabled{opacity:.55;cursor:wait}.picker-note{margin:12px 0 0;font-size:10px;line-height:1.5;color:var(--muted)}.drill-stage{min-height:560px;padding:34px}.stage-empty{min-height:490px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center}.headphone-glyph{width:72px;height:72px;display:grid;place-items:center;color:var(--forest);background:var(--mint);border-radius:50%;font-size:28px}.stage-empty h2{margin:20px 0 8px}.stage-empty p{margin:0;max-width:420px;color:var(--muted);line-height:1.6}.runner-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:18px;border-bottom:1px solid var(--line)}.runner-tags{display:flex;gap:7px}.runner-tag{padding:6px 8px;border-radius:7px;background:var(--mint-2);font-size:10px;font-weight:750}.runner-progress{font-size:11px;color:var(--muted)}.audio-panel{margin:26px 0 22px;padding:18px;background:var(--deep);border-radius:15px}.audio-panel p{margin:0 0 12px;color:#a7c7b9;font-size:11px}.audio-panel audio{display:block;width:100%}.question-stem{margin:0 0 17px;font-size:20px;line-height:1.45}.option-list{display:grid;gap:9px}.option-button{padding:14px 16px;display:flex;gap:13px;align-items:flex-start;border:1px solid var(--line);background:white;border-radius:12px;cursor:pointer;text-align:left}.option-button b{width:24px;height:24px;display:grid;place-items:center;flex:0 0 24px;border-radius:7px;background:var(--cream);font-size:11px}.option-button:hover,.option-button.is-selected{border-color:var(--forest);background:var(--mint-2)}.option-button.is-correct{border-color:#37a66b;background:#e2f8ea}.option-button.is-wrong{border-color:#c86b68;background:#fbe8e7}.runner-actions{margin-top:20px;display:flex;justify-content:flex-end;gap:9px}.runner-actions button{padding:11px 16px;border-radius:10px;cursor:pointer}.secondary-button{border:1px solid var(--line);background:white}.feedback{margin-top:24px;padding:20px;background:var(--mint-2);border-radius:14px}.feedback.wrong{background:#fff1ee}.feedback h3{margin:0 0 10px}.feedback p{margin:8px 0 0;font-size:12px;line-height:1.7}.feedback .transcript{padding-top:12px;border-top:1px solid rgba(11,61,46,.15)}
.vocab-section-bar{margin-bottom:14px;display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.vocab-section-button{min-height:105px;padding:17px 18px;display:grid;grid-template-columns:1fr auto;gap:6px 12px;text-align:left;background:white;border:1px solid var(--line);border-radius:16px;cursor:pointer}.vocab-section-button strong{font-size:16px}.vocab-section-button span{align-self:start;padding:5px 8px;border-radius:99px;background:var(--mint-2);color:var(--forest);font-size:10px;font-weight:800}.vocab-section-button small{grid-column:1/-1;color:var(--muted);line-height:1.45}.vocab-section-button.is-active{color:white;background:var(--forest);border-color:var(--forest)}.vocab-section-button.is-active span{background:var(--mint);color:var(--forest)}.vocab-section-button.is-active small{color:#cfe6d8}.vocab-toolbar{padding:16px;display:grid;grid-template-columns:minmax(280px,1fr) auto auto;gap:12px;align-items:center;background:white;border:1px solid var(--line);border-radius:16px}.search-box{min-height:46px;padding:0 14px;display:flex;align-items:center;gap:10px;background:var(--cream);border:1px solid transparent;border-radius:11px}.search-box:focus-within{border-color:var(--forest);background:white}.search-box input{width:100%;border:0;outline:0;background:transparent}.chip-row{display:flex;gap:6px;flex-wrap:wrap}.filter-chip{padding:9px 12px;border:1px solid var(--line);background:white;border-radius:99px;cursor:pointer;font-size:11px}.filter-chip.is-active{color:white;background:var(--forest);border-color:var(--forest)}.select-label{display:flex;align-items:center;gap:8px;font-size:11px;color:var(--muted)}.select-label select{padding:9px 28px 9px 10px;border:1px solid var(--line);background:white;border-radius:9px}.result-line{margin:22px 0 14px;color:var(--muted);font-size:11px}.vocab-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.vocab-card{min-height:230px;padding:20px;display:flex;flex-direction:column;background:white;border:1px solid var(--line);border-radius:16px}.vocab-meta{display:flex;gap:7px}.level-tag,.scene-tag{padding:5px 7px;border-radius:6px;background:var(--mint-2);font-size:9px;font-weight:750}.scene-tag{background:var(--cream);color:var(--muted)}.vocab-card h3{margin:22px 0 7px;font-size:20px}.vocab-card>p{margin:0;color:var(--muted)}.vocab-evidence{margin-top:10px;color:#78857d;line-height:1.5}.remember-button{align-self:flex-start;margin-top:auto;padding:7px 9px;border:1px solid var(--line);background:white;border-radius:8px;cursor:pointer;font-size:10px}.remember-button.is-saved{color:var(--forest);background:var(--mint);border-color:var(--mint)}.load-more{display:block;margin:24px auto 0;padding:11px 20px;border:1px solid var(--line);background:white;border-radius:10px;cursor:pointer}.pdf-frame{height:calc(100vh - 250px);min-height:600px;padding:10px;background:white;border:1px solid var(--line);border-radius:18px}.pdf-frame iframe{width:100%;height:100%;border:0;border-radius:10px}.outline-button{padding:11px 14px;border:1px solid var(--forest);border-radius:10px;color:var(--forest);text-decoration:none;font-size:12px;font-weight:750}
.knowledge-view{padding-top:24px}.knowledge-hero{position:relative;min-height:470px;display:flex;align-items:center;overflow:hidden;background:var(--deep);border-radius:28px}.knowledge-hero img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}.knowledge-hero:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(4,35,25,.96) 0%,rgba(4,35,25,.84) 34%,rgba(4,35,25,.1) 72%)}.knowledge-hero>div{position:relative;z-index:1;max-width:600px;padding:54px;color:white}.back-link.light{color:#b8d3c6}.knowledge-hero .eyebrow{color:var(--mint)}.knowledge-hero h1{font-size:clamp(47px,5.5vw,72px);line-height:1.04}.knowledge-hero p:last-child{margin:20px 0 0;color:#bad3c7;line-height:1.7}.knowledge-controls{margin-top:24px;padding:12px;display:grid;grid-template-columns:1fr 260px;gap:12px;align-items:center;background:white;border:1px solid var(--line);border-radius:15px}.scroll-row{flex-wrap:nowrap;overflow:auto;padding-bottom:2px}.scroll-row .filter-chip{flex:0 0 auto}.search-box.compact{min-height:40px}.knowledge-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.knowledge-card{padding:24px;background:white;border:1px solid var(--line);border-radius:18px}.knowledge-card-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.knowledge-category{padding:6px 8px;background:var(--mint-2);border-radius:7px;color:var(--forest);font-size:10px;font-weight:750}.knowledge-source{font:700 9px/1 monospace;color:var(--muted)}.knowledge-card h2{margin:19px 0 10px;font-size:23px;letter-spacing:-.04em}.fun-lead{margin:0;padding-left:14px;border-left:3px solid var(--lime);color:#315c49;line-height:1.65;font-size:13px}.knowledge-points{margin:18px 0 0;padding-left:20px;color:var(--muted);font-size:12px;line-height:1.7}.knowledge-card details{margin-top:18px;padding-top:14px;border-top:1px solid var(--line)}.knowledge-card summary{cursor:pointer;font-size:11px;font-weight:750}.knowledge-vocab{display:grid;grid-template-columns:1fr 1fr;gap:7px;margin-top:12px}.knowledge-vocab span{padding:8px;background:var(--cream);border-radius:8px;font-size:10px}.knowledge-vocab b{display:block;margin-bottom:3px}.coming-view{min-height:calc(100vh - 76px);display:grid;place-items:center;padding:40px}.coming-card{position:relative;width:min(720px,100%);padding:58px;background:white;border:1px solid var(--line);border-radius:28px;box-shadow:var(--shadow)}.coming-index{position:absolute;right:34px;top:28px;font:800 80px/1 "Arial Rounded MT Bold";color:#e7eee9}.coming-card h1{position:relative;font-size:54px;line-height:1.05}.coming-card>p:last-child{position:relative;max-width:540px;margin:20px 0 0;color:var(--muted);line-height:1.7}footer{border-top:1px solid var(--line);background:white}footer>div{min-height:116px;display:flex;align-items:center;justify-content:space-between;gap:20px;font-size:11px;color:var(--muted)}footer p{margin:0}footer strong,footer span{display:block}footer strong{margin-bottom:5px;color:var(--ink)}
.login-page{min-height:100vh;background:var(--deep)}.login-shell{min-height:100vh;width:min(980px,calc(100% - 32px));margin:auto;display:grid;grid-template-columns:1fr 280px;align-items:center;gap:70px}.login-card{padding:44px;background:white;border-radius:26px;box-shadow:0 30px 90px rgba(0,0,0,.25)}.login-brand{margin-bottom:60px}.login-card h1{margin:0;font-size:48px;letter-spacing:-.055em}.login-card>p:not(.eyebrow){color:var(--muted);line-height:1.6}.login-card form{margin-top:28px}.login-card label{display:grid;gap:8px;font-size:12px;font-weight:750}.login-card input{padding:13px;border:1px solid var(--line);border-radius:10px}.login-card .primary-button{margin-top:12px}.login-error{min-height:18px;margin:10px 0 0;color:#a93b39;font-size:11px}.login-shell>aside{color:white}.login-shell>aside p{padding:18px 0;margin:0;border-bottom:1px solid rgba(255,255,255,.18);font-size:14px}
@keyframes meter{from{transform:scaleY(.7);opacity:.6}to{transform:scaleY(1);opacity:1}}
@media(max-width:960px){.home-hero{grid-template-columns:1fr;gap:40px}.skill-orbit{width:min(420px,90vw)}.skills-grid{grid-template-columns:repeat(2,1fr)}.feature-card:nth-child(n){grid-column:span 6}.exam-list{grid-template-columns:1fr}.drill-layout{grid-template-columns:1fr}.drill-picker{position:static}.vocab-section-bar{grid-template-columns:1fr}.vocab-toolbar{grid-template-columns:1fr}.vocab-grid{grid-template-columns:repeat(2,1fr)}.knowledge-controls{grid-template-columns:1fr}.login-shell{grid-template-columns:1fr}.login-shell>aside{display:none}}
@media(max-width:680px){:root{--shell:calc(100vw - 28px)}.site-header{height:68px;padding-inline:14px;gap:10px}.brand-mark{width:36px;height:36px}.brand>span:last-child{display:none}.main-nav{flex:1;justify-content:center}.main-nav a{min-width:0;padding:0 9px;font-size:12px}.account-button{padding:7px 9px}.home-hero{min-height:auto;padding:58px 0}.home-copy h1{font-size:54px}.home-copy>p:not(.eyebrow){font-size:15px}.skills-grid{grid-template-columns:1fr}.skill-card{min-height:230px}.compact-hero{display:block}.sound-meter{margin-top:30px}.feature-card:nth-child(n){grid-column:1/-1}.feature-grid{display:grid;grid-template-columns:1fr}.mode-links{grid-template-columns:1fr}.page-bar{display:block}.stat-block{margin-top:24px}.exam-card{grid-template-columns:70px 1fr}.exam-card>a{grid-column:2;padding:13px 18px}.drill-stage{padding:20px}.question-stem{font-size:17px}.vocab-grid,.knowledge-grid{grid-template-columns:1fr}.pdf-frame{height:70vh;min-height:500px}.knowledge-hero{min-height:560px}.knowledge-hero:after{background:linear-gradient(180deg,rgba(4,35,25,.96) 0%,rgba(4,35,25,.75) 65%,rgba(4,35,25,.3))}.knowledge-hero>div{align-self:flex-start;padding:38px 25px}.knowledge-vocab{grid-template-columns:1fr}.coming-card{padding:34px 24px}.coming-card h1{font-size:42px}.coming-index{font-size:58px}.login-card{padding:30px 22px}.login-card h1{font-size:40px}footer>div{padding:24px 0;display:block}footer p+ p{margin-top:14px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}}

/* Durable learning record and mistake book */
.progress-entry{margin-top:4px;padding:24px 28px;display:grid;grid-template-columns:1fr auto auto;align-items:center;gap:28px;color:inherit;text-decoration:none;background:linear-gradient(105deg,#e2f7e8,#f6fbf4);border:1px solid #badcc6;border-radius:18px}.progress-entry+.feature-grid{margin-top:28px}.progress-entry:hover{border-color:var(--forest);transform:translateY(-2px);box-shadow:var(--shadow)}.progress-entry h2{margin:3px 0 6px;font-size:23px}.progress-entry p{margin:0;color:var(--muted)}.progress-entry-stats{display:flex;gap:10px}.progress-entry-stats span{min-width:104px;padding:12px 14px;background:rgba(255,255,255,.7);border:1px solid rgba(11,61,46,.1);border-radius:12px;font-size:11px;color:var(--muted)}.progress-entry-stats strong{display:block;margin-bottom:3px;font-size:25px;color:var(--forest)}.progress-entry-action{font-size:12px;font-weight:800;color:var(--forest)}
.exam-progress{margin:7px 0 0!important;color:var(--muted);font-size:11px}.exam-progress.has-progress{color:var(--forest);font-weight:750}.records-dashboard{padding-bottom:72px}.record-stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.record-stat-grid article{padding:20px 22px;background:white;border:1px solid var(--line);border-radius:16px}.record-stat-grid span{display:block;color:var(--muted);font-size:11px}.record-stat-grid strong{display:block;margin-top:10px;font-size:36px;color:var(--forest)}.record-stat-grid .wrong-stat{background:#fff5f1;border-color:#f0d4ca}.record-stat-grid .wrong-stat strong{color:#ad4d40}.device-note{margin:14px 0 26px;padding:12px 15px;color:#536b60;background:#eff7f1;border-radius:10px;font-size:11px}.records-columns{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:18px;align-items:start}.records-panel{padding:22px;background:white;border:1px solid var(--line);border-radius:18px}.panel-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:15px;padding-bottom:18px;border-bottom:1px solid var(--line)}.panel-heading h2{margin:3px 0 0;font-size:23px}.panel-heading>span{color:var(--muted);font-size:10px}.records-exams,.wrongbook-list{display:grid;gap:10px;margin-top:14px}.record-exam-row{padding:15px;display:grid;grid-template-columns:1fr 92px auto;gap:13px;align-items:center;background:var(--cream);border-radius:13px}.record-exam-main{display:flex;align-items:center;gap:10px;min-width:0}.record-status{padding:7px 8px;flex:0 0 auto;color:#8c6232;background:#f8eac7;border-radius:7px;font-size:9px;font-weight:800}.record-status.is-complete{color:var(--forest);background:var(--mint)}.record-exam-row h3{margin:0;font-size:14px}.record-meta{margin:4px 0 0;color:var(--muted);font-size:9px}.record-progress span{display:block;margin-bottom:5px;color:var(--muted);font-size:9px}.record-progress i{display:block;height:5px;overflow:hidden;background:#dfe8e1;border-radius:99px}.record-progress b{display:block;height:100%;background:var(--forest);border-radius:99px}.record-exam-row>a,.wrongbook-card>a{color:var(--forest);font-size:10px;font-weight:750;text-decoration:none}.records-empty{padding:34px 20px;margin:0;text-align:center;color:var(--muted);background:var(--cream);border-radius:13px}.records-empty strong{display:block;margin-bottom:6px;color:var(--ink);font-size:16px}.records-empty p{margin:0 0 12px;line-height:1.6}.records-empty a{color:var(--forest);font-weight:750;text-decoration:none}.wrongbook-card{padding:0 15px;background:#fffaf8;border:1px solid #edd9d1;border-radius:13px}.wrongbook-card summary{padding:15px 0;display:flex;align-items:center;justify-content:space-between;gap:15px;cursor:pointer;list-style:none}.wrongbook-card summary::-webkit-details-marker{display:none}.wrongbook-card summary>div{min-width:0}.wrong-source{display:block;color:#9b665b;font-size:9px}.wrongbook-card h3{margin:5px 0 0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:13px}.wrongbook-card summary>b{flex:0 0 auto;padding:7px 8px;color:#9c3f35;background:#fbe2dc;border-radius:7px;font-size:10px}.wrongbook-card[open]{padding-bottom:16px}.wrongbook-card[open] h3{white-space:normal;line-height:1.5}.wrong-answer-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;padding-top:13px;border-top:1px solid #edd9d1}.wrong-answer-grid p{margin:0;padding:11px;background:white;border-radius:9px}.wrong-answer-grid span{display:block;margin-bottom:5px;color:var(--muted);font-size:9px}.wrong-answer-grid strong{font-size:11px;line-height:1.45}.student-answer strong{color:#9c3f35}.correct-answer strong{color:var(--forest)}.wrong-analysis{margin:10px 0;padding:11px;color:#536b60;background:var(--mint-2);border-radius:9px;font-size:10px;line-height:1.6}
@media(max-width:960px){.progress-entry{grid-template-columns:1fr auto}.progress-entry-action{grid-column:1/-1}.records-columns{grid-template-columns:1fr}.record-stat-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:680px){.progress-entry{padding:20px;display:block}.progress-entry-stats{margin:16px 0}.progress-entry-stats span{flex:1;min-width:0}.record-exam-row{grid-template-columns:1fr auto}.record-progress{grid-column:1/-1;grid-row:2}.record-stat-grid{gap:8px}.record-stat-grid article{padding:15px}.wrong-answer-grid{grid-template-columns:1fr}.records-panel{padding:16px}}

/* 2.1 portal expansion: premium hero, larger navigation, review and lecture tools */
.site-header{height:88px;gap:50px}.brand{gap:15px}.brand-mark{width:50px;height:50px;padding:10px;border-radius:15px}.brand-mark i{width:4px}.brand strong{font-size:18px;font-weight:850;letter-spacing:.115em}.brand small{margin-top:7px;font-size:11px;font-weight:800}.main-nav{gap:7px;min-width:0}.main-nav a{min-width:76px;padding:0 14px;font-size:15px;font-weight:800;white-space:nowrap}.main-nav .nav-tool{min-width:106px}.main-nav .nav-tool span{margin-left:3px;font-size:10px}.account-button{padding:10px 14px;font-size:13px;font-weight:750}.content-view{min-height:calc(100vh - 88px)}
.hero-wave{height:116px;max-width:590px;margin:30px 0 0;padding:0 6px;display:flex;align-items:center;gap:7px;overflow:hidden;border-top:1px solid rgba(11,61,46,.15);border-bottom:1px solid rgba(11,61,46,.15);mask-image:linear-gradient(90deg,transparent,#000 9%,#000 91%,transparent)}.hero-wave i{width:5px;height:var(--wave,40%);flex:1;background:linear-gradient(180deg,var(--lime),var(--forest));border-radius:99px;transform-origin:center;animation:hero-wave 1.2s ease-in-out infinite alternate}.hero-wave i:nth-child(4n+1){--wave:25%;animation-delay:-.7s}.hero-wave i:nth-child(4n+2){--wave:72%;animation-delay:-.25s}.hero-wave i:nth-child(4n+3){--wave:100%;animation-delay:-.95s}.hero-wave i:nth-child(4n){--wave:48%;animation-delay:-.4s}.hero-wave i:nth-child(7n){--wave:82%}.hero-wave i:nth-child(11n){--wave:34%}@keyframes hero-wave{0%{transform:scaleY(.35);opacity:.52}100%{transform:scaleY(1);opacity:1}}
.structure-feature{background:linear-gradient(145deg,#f4fbf5,#e0f3e5)}.vocab-toolbar{grid-template-columns:minmax(260px,1fr) auto auto auto}.review-book-link{padding:11px 13px;color:white;background:var(--forest);border-radius:10px;text-decoration:none;font-size:11px;font-weight:800;white-space:nowrap}.review-book-link strong{display:inline-grid;min-width:22px;height:22px;margin:0 3px;place-items:center;color:var(--forest);background:var(--mint);border-radius:99px}.review-toolbar{margin-bottom:18px;padding:12px 14px;display:flex;align-items:center;justify-content:space-between;gap:16px;background:white;border:1px solid var(--line);border-radius:15px}.review-toolbar>div{display:flex;gap:7px}.review-toolbar .outline-button{cursor:pointer;background:white}.review-book{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.review-book>.records-empty{grid-column:1/-1}.review-card{position:relative;min-height:220px;padding:24px;display:flex;flex-direction:column;background:white;border:1px solid var(--line);border-radius:18px}.review-number{position:absolute;right:18px;top:16px;font:800 38px/1 monospace;color:#e5ece7}.review-card>div{display:flex;gap:6px}.review-card h2{position:relative;margin:34px 0 8px;font-size:25px}.review-card>p,.review-card .quiz-scene{margin:0;color:var(--muted);line-height:1.55}.review-card button{align-self:flex-start;margin-top:auto;padding:8px 10px;border:1px solid var(--line);background:var(--cream);border-radius:8px;cursor:pointer;font-size:10px}.review-card.quiz .quiz-prompt{position:relative;margin:36px 0 20px;color:var(--ink);font-size:18px;font-weight:750}.review-card.quiz details{padding:14px;background:var(--mint-2);border-radius:12px}.review-card.quiz summary{cursor:pointer;color:var(--forest);font-size:11px;font-weight:800}.review-card.quiz details h2{margin:15px 0 6px}.review-card.quiz button{margin-top:18px}
.structure-overview{margin-bottom:22px;display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.structure-overview article{padding:24px;background:var(--deep);border-radius:18px;color:white}.structure-overview span{font:800 11px/1 monospace;color:var(--lime)}.structure-overview h2{margin:22px 0 9px;font-size:20px}.structure-overview p{margin:0;color:#b6d2c4;font-size:12px;line-height:1.7}.structure-groups{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.structure-group{padding:24px;background:white;border:1px solid var(--line);border-radius:19px}.structure-group header{display:flex;align-items:center;justify-content:space-between;gap:15px}.structure-group header>div{display:flex;align-items:center;gap:11px}.structure-index{width:35px;height:35px;display:grid;place-items:center;color:var(--forest);background:var(--mint);border-radius:10px;font:800 10px/1 monospace}.structure-group h2{margin:0;font-size:22px}.structure-group header>strong{font-size:11px;color:var(--muted)}.structure-description{min-height:62px;margin:18px 0;color:var(--muted);font-size:12px;line-height:1.7}.structure-flow{padding:13px;display:flex;align-items:center;justify-content:center;gap:7px;background:var(--cream);border-radius:11px;color:#7a9387;font-size:10px}.structure-flow span{padding:7px 9px;color:var(--forest);background:white;border:1px solid var(--line);border-radius:8px;font-weight:800}.structure-group details{margin-top:16px;padding-top:15px;border-top:1px solid var(--line)}.structure-group summary{cursor:pointer;color:var(--forest);font-size:11px;font-weight:800}.structure-talks{display:grid;gap:8px;margin-top:13px}.structure-talks article{padding:13px;background:var(--cream);border-radius:10px}.structure-talks span{font:750 9px/1 monospace;color:#4e7563}.structure-talks h3{margin:6px 0 5px;font-size:13px}.structure-talks p{margin:4px 0 0;color:var(--muted);font-size:10px;line-height:1.55}.structure-talks .talk-pattern{color:var(--forest);font-weight:700}
.related-question-links{margin-top:18px;padding-top:14px;display:flex;align-items:center;justify-content:space-between;gap:12px;border-top:1px solid var(--line)}.related-question-links>span{flex:0 0 auto;color:var(--muted);font-size:10px;font-weight:800}.related-question-links>div{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:6px}.related-question-links a{padding:7px 9px;color:var(--forest);background:var(--mint-2);border:1px solid #c4dfcf;border-radius:8px;text-decoration:none;font:800 10px/1 ui-monospace,SFMono-Regular,Menlo,monospace}.related-question-links a:hover,.related-question-links a:focus-visible{color:white;background:var(--forest);border-color:var(--forest);outline:0}.related-question-links.is-compact{margin-top:12px;padding-top:11px}.related-question-links.is-compact a{padding:6px 8px;font-size:9px}

.daily-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:13px}.daily-card{min-height:330px;padding:22px;display:flex;flex-direction:column;background:white;border:1px solid var(--line);border-radius:18px}.daily-card.is-today{color:white;background:var(--forest);border-color:var(--forest);box-shadow:var(--shadow)}.daily-card header{display:flex;align-items:center;justify-content:space-between}.daily-day{font-size:19px;font-weight:850}.today-tag{font:800 9px/1 monospace;letter-spacing:.1em;color:var(--lime)}.daily-card .eyebrow{margin-top:28px}.daily-card h2{margin:0 0 8px;font-size:21px;line-height:1.25}.daily-level{margin:0;color:#648073;font-size:10px;font-weight:750}.daily-copy{margin:19px 0;color:var(--muted);font-size:12px;line-height:1.7}.daily-tags{display:flex;gap:6px;margin-top:auto}.daily-tags span{padding:6px 8px;background:var(--mint-2);border-radius:7px;color:var(--forest);font-size:9px;font-weight:800}.daily-card>a{margin-top:18px;color:var(--forest);text-decoration:none;font-size:11px;font-weight:800}.daily-card.is-today .eyebrow,.daily-card.is-today .daily-level,.daily-card.is-today .daily-copy{color:#bcd5c9}.daily-card.is-today .daily-tags span{background:rgba(255,255,255,.12);color:var(--mint)}.daily-card.is-today>a{color:var(--mint)}.daily-note{margin-top:17px;color:var(--muted);font-size:10px}.footer-manifesto{max-width:520px;text-align:right;font-size:10px;line-height:1.65;color:#78877f}
.login-card form{display:grid;gap:13px}.login-card .primary-button{margin-top:4px}.login-card label+label{margin-top:2px}.login-helper{margin:0;color:var(--muted);font-size:10px;line-height:1.5}.admin-page{background:var(--cream)}.admin-shell{width:min(1040px,calc(100% - 32px));margin:45px auto}.admin-head{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:24px}.admin-head h1{margin:8px 0 0;font-size:42px}.admin-card{padding:24px;background:white;border:1px solid var(--line);border-radius:20px}.admin-add{display:grid;grid-template-columns:1fr auto;gap:10px}.admin-add input{padding:12px;border:1px solid var(--line);border-radius:10px}.student-table{width:100%;margin-top:20px;border-collapse:collapse}.student-table th,.student-table td{padding:13px 9px;border-bottom:1px solid var(--line);text-align:left;font-size:12px}.student-table th{color:var(--muted);font-size:10px}.student-actions{display:flex;gap:7px}.student-actions button{padding:7px 9px;border:1px solid var(--line);background:white;border-radius:7px;cursor:pointer;font-size:10px}.student-actions .danger{color:#a93b39}.admin-login{width:min(520px,calc(100% - 32px));margin:10vh auto}
@media(max-width:1120px){.site-header{gap:24px}.main-nav{overflow-x:auto}.main-nav a{min-width:68px;padding-inline:10px;font-size:14px}.daily-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:960px){.vocab-toolbar{grid-template-columns:1fr}.review-book{grid-template-columns:repeat(2,1fr)}.structure-groups{grid-template-columns:1fr}}
@media(max-width:680px){.site-header{height:72px}.brand-mark{width:40px;height:40px}.main-nav{justify-content:flex-start}.main-nav a{font-size:13px}.main-nav .nav-tool{min-width:90px}.account-button{flex:0 0 auto}.hero-wave{height:90px}.structure-overview,.review-book,.daily-grid{grid-template-columns:1fr}.structure-flow{flex-wrap:wrap}.footer-manifesto{margin-top:16px!important;text-align:left}.admin-head{align-items:flex-start;flex-direction:column}.admin-add{grid-template-columns:1fr}.student-table thead{display:none}.student-table tr{display:grid;padding:12px 0}.student-table td{border:0;padding:4px}.student-actions{margin-top:6px}}


/* 2.1.1 visual hotfix: non-overlapping four-skill orbit and one-line tool nav */
.main-nav .nav-tool{display:flex;align-items:center;justify-content:center;white-space:nowrap}
.skill-orbit{isolation:isolate;min-width:340px;background:radial-gradient(circle at center,rgba(201,245,215,.45) 0 17%,transparent 17.5%),linear-gradient(135deg,rgba(255,255,255,.5),rgba(232,248,237,.35))}
.skill-orbit:before{inset:13%;border-style:solid;border-color:#d4e0da}
.skill-orbit:after{inset:31%;z-index:-1;background:rgba(201,245,215,.58);border:1px solid rgba(11,61,46,.08)}
.orbit-center{inset:auto;left:50%;top:50%;width:112px;height:112px;transform:translate(-50%,-50%);background:var(--forest);color:white;border:7px solid var(--cream);border-radius:50%;box-shadow:0 15px 32px rgba(11,61,46,.2)}
.orbit-center span,.orbit-center small{color:#bce7ca;font-size:8px;letter-spacing:.12em}.orbit-center strong{font-size:42px;line-height:.86;color:white}
.orbit-pill{width:132px;padding:11px 12px;text-align:center;font-size:12px;box-shadow:0 8px 24px rgba(11,61,46,.08)}
.orbit-pill:nth-of-type(1){left:auto;right:-1%;top:50%;transform:translateY(-50%)}
.orbit-pill:nth-of-type(2){left:50%;right:auto;top:auto;bottom:4%;transform:translateX(-50%)}
.orbit-pill:nth-of-type(3){left:-1%;right:auto;top:50%;bottom:auto;transform:translateY(-50%)}
.orbit-pill:nth-of-type(4){left:50%;right:auto;top:4%;bottom:auto;transform:translateX(-50%)}
@media(max-width:680px){.skill-orbit{min-width:0}.orbit-pill{width:116px;font-size:11px}.orbit-center{width:96px;height:96px}.orbit-center strong{font-size:36px}.progress-entry+.feature-grid{margin-top:22px}.related-question-links{align-items:flex-start;flex-direction:column}.related-question-links>div{justify-content:flex-start}}


/* 2.1.2 feature-grid hotfix: the sixth card must own a real grid span */
@media(min-width:961px){
  .feature-card:nth-child(3),.feature-card:nth-child(4),.feature-card:nth-child(5),.feature-card:nth-child(6){grid-column:span 3}
}
.structure-feature .eyebrow{max-width:150px;line-height:1.5}
@media(max-width:960px){.feature-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.feature-card:nth-child(n){width:100%;min-width:0;grid-column:span 1}}
@media(max-width:680px){.feature-grid{grid-template-columns:minmax(0,1fr)}.feature-card:nth-child(n){width:100%;min-width:0;grid-column:1/-1}.feature-card h2{word-break:normal;overflow-wrap:anywhere}}

/* Passage-based focused practice */
.passage-library-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:24px;padding-bottom:20px;border-bottom:1px solid var(--line)}
.passage-library-head h2{margin:4px 0 8px;font-size:30px;letter-spacing:-.035em}.passage-library-note{margin:0;color:var(--muted);line-height:1.6}.passage-library-head>strong{flex:0 0 auto;padding:9px 12px;border:1px solid #9bcab2;border-radius:999px;color:var(--forest);background:var(--mint-2);font-size:11px}
.passage-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.passage-card{min-width:0;padding:19px;border:1px solid var(--line);border-radius:15px;background:linear-gradient(145deg,#fff 0%,#f7fbf8 100%);box-shadow:0 10px 28px rgba(11,61,46,.035)}.passage-card header{display:flex;align-items:center;justify-content:space-between}.passage-number{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:11px;font-weight:800;color:#739084}.passage-level{padding:5px 7px;border-radius:7px;background:var(--mint);font-size:9px;font-weight:800;text-transform:uppercase}.passage-source{margin:20px 0 5px;color:var(--green);font-size:10px;font-weight:800;letter-spacing:.08em;text-transform:uppercase}.passage-card h3{margin:0;font-size:20px}.passage-meta{min-height:20px;margin:8px 0 20px;color:var(--muted);font-size:10px;line-height:1.5}.passage-card button{width:100%;display:flex;align-items:center;justify-content:space-between;padding:11px 13px;border:0;border-radius:10px;color:white;background:var(--forest);font-weight:750;cursor:pointer}.passage-card:hover{border-color:#9bcab2;transform:translateY(-1px)}.passage-card.has-issue{border-color:#d8b86e}.passage-more{margin-top:18px}
.passage-listening{--listen-progress:0%;position:relative;min-height:460px;margin-top:24px;padding:52px clamp(24px,6vw,70px);display:flex;flex-direction:column;align-items:center;justify-content:center;overflow:hidden;border-radius:20px;color:white;background:radial-gradient(circle at 50% 15%,#17664e 0%,var(--deep) 52%,#06291e 100%);text-align:center}.passage-listening:after{content:"";position:absolute;left:0;bottom:0;width:var(--listen-progress);height:5px;background:#77dfa4;transition:width .2s linear}.passage-listening .eyebrow{color:#8de0b1}.passage-listening h2{margin:9px 0 10px;font-size:clamp(32px,4.5vw,54px);letter-spacing:-.045em}.listening-copy{max-width:500px;margin:0 0 32px;color:#bdd8cc;line-height:1.7}.passage-listening audio{width:min(560px,100%);position:relative;z-index:1}.listening-status{margin:16px 0 0;color:#a8cbbd;font-size:11px}.listening-lock{display:flex;align-items:center;gap:18px;margin-bottom:23px}.listening-lock>span{padding:7px 9px;border:1px solid rgba(170,226,195,.45);border-radius:7px;color:#aee0c4;font:800 9px/1 ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.12em}.listening-wave{height:48px;display:flex;align-items:center;gap:5px}.listening-wave i{width:5px;height:12px;border-radius:999px;background:#79dfa5;transform-origin:center}.passage-listening.is-playing .listening-wave i{animation:passage-wave .9s ease-in-out infinite alternate}.passage-listening.is-playing .listening-wave i:nth-child(2n){animation-delay:-.35s}.passage-listening.is-playing .listening-wave i:nth-child(3n){animation-delay:-.6s}.passage-listening.is-playing .listening-wave i:nth-child(4n){animation-delay:-.15s}@keyframes passage-wave{to{height:44px;background:#c3f4d4}}
.passage-back{margin-top:16px;padding:10px 14px;border-radius:9px;cursor:pointer}.passage-issue{margin-top:14px}.questions-unlocked{margin:24px 0;display:flex;align-items:center;gap:17px;padding:18px 20px;border:1px solid #a9d7bd;border-radius:15px;background:var(--mint-2)}.questions-unlocked>span{padding:7px 9px;border-radius:7px;color:white;background:var(--forest);font:800 9px/1 ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.1em}.questions-unlocked h2{margin:3px 0 4px;font-size:22px}.questions-unlocked p{margin:0;color:var(--muted);font-size:11px}
.passage-question-list{display:grid;gap:18px}.passage-question{padding:24px;border:1px solid var(--line);border-radius:17px;background:#fff}.passage-question>header{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}.passage-question>header span{color:var(--green);font-size:10px;font-weight:850;letter-spacing:.1em;text-transform:uppercase}.passage-question>header small{padding:5px 7px;border-radius:7px;background:var(--cream);color:var(--muted);font-size:9px;font-weight:750}.passage-question h3{margin:0 0 17px;font-size:19px;line-height:1.5}.passage-question.is-correct{border-color:#83cda2}.passage-question.is-wrong{border-color:#d5a29f}.passage-question .feedback{margin-bottom:0}.passage-submit-actions .primary-button:disabled{cursor:not-allowed}.passage-result{margin:24px 0;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:23px 25px;border-radius:17px;color:white;background:var(--forest)}.passage-result .eyebrow{color:#aee0c4}.passage-result h2{margin:4px 0 6px}.passage-result p{margin:0;color:#bcd9cc}.passage-result>strong{font-size:42px;letter-spacing:-.05em}.passage-transcript{margin-top:20px;padding:18px 20px;border:1px solid var(--line);border-radius:14px;background:white}.passage-transcript summary{cursor:pointer;font-weight:800}.passage-transcript p{white-space:pre-line;font-size:12px;line-height:1.8}.passage-transcript .transcript-zh{padding-top:13px;border-top:1px solid var(--line);color:var(--muted)}
.passage-replay{margin:-12px 0 22px;padding:20px 22px;display:grid;grid-template-columns:minmax(220px,.72fr) minmax(300px,1.28fr);align-items:center;gap:22px;border:1px solid #b8d8c5;border-radius:16px;background:linear-gradient(135deg,#f2faf4,#fff)}.passage-replay .eyebrow{color:var(--green)}.passage-replay h3{margin:5px 0 5px;font-size:19px}.passage-replay p:last-child{margin:0;color:var(--muted);font-size:10px}.passage-replay audio{width:100%}
@media(max-width:680px){.passage-grid{grid-template-columns:1fr}.passage-library-head{align-items:flex-start;flex-direction:column}.passage-listening{min-height:420px;margin-inline:-4px;padding:42px 20px}.listening-lock{flex-direction:column;gap:8px}.questions-unlocked{align-items:flex-start}.passage-question{padding:19px}.passage-submit-actions{align-items:stretch;flex-direction:column}.passage-submit-actions button{width:100%!important}.passage-result{align-items:flex-start}.passage-result>strong{font-size:32px}.passage-replay{grid-template-columns:1fr;padding:18px}}
@media(prefers-reduced-motion:reduce){.passage-listening.is-playing .listening-wave i{animation:none}.passage-card{transition:none}}

/* 佛脚 high-frequency sprint */
.cram-entry{margin:0 0 52px;padding:28px 30px;display:grid;grid-template-columns:minmax(0,1fr) auto auto;align-items:center;gap:30px;color:white;background:linear-gradient(125deg,var(--deep),#0d5840);border:1px solid rgba(125,226,164,.25);border-radius:22px;text-decoration:none;box-shadow:0 22px 55px rgba(6,39,29,.18)}.cram-entry .eyebrow{color:#8ce0af}.cram-entry h2{margin:4px 0 7px;font-size:38px;letter-spacing:-.05em}.cram-entry p:last-child{margin:0;color:#bad9ca;line-height:1.6}.cram-entry-stat{min-width:120px;padding:12px 22px;border-left:1px solid rgba(255,255,255,.18)}.cram-entry-stat strong,.cram-entry-stat span{display:block}.cram-entry-stat strong{font-size:42px;line-height:1}.cram-entry-stat span{margin-top:7px;color:#afd1c1;font-size:10px}.cram-entry-action{padding:14px 18px;color:var(--forest);background:var(--mint);border-radius:11px;font-size:12px;font-weight:800}.cram-entry:hover .cram-entry-action{background:white}
.cram-dashboard{display:grid;gap:18px}.cram-frequency-panel,.cram-set-panel{padding:28px;background:white;border:1px solid var(--line);border-radius:22px}.cram-frequency-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.cram-frequency-card{padding:20px;border:1px solid var(--line);border-radius:16px;background:linear-gradient(145deg,#fff,#f4faf6)}.cram-frequency-card header{display:flex;align-items:center;justify-content:space-between;gap:12px}.cram-frequency-card h3{margin:0;font-size:20px}.cram-frequency-card header span{color:var(--muted);font-size:9px}.cram-frequency-card ol{margin:18px 0 0;padding:0;display:grid;gap:8px;list-style:none}.cram-frequency-card li{position:relative;min-height:45px;padding:9px 11px;display:flex;align-items:center;justify-content:space-between;gap:12px;overflow:hidden;border:1px solid #e0e9e3;border-radius:9px;background:white}.cram-frequency-card li:before{content:"";position:absolute;inset:0 auto 0 0;width:var(--frequency);background:linear-gradient(90deg,rgba(121,221,154,.27),rgba(121,221,154,.06))}.cram-frequency-card li>div,.cram-frequency-card li>small{position:relative}.cram-frequency-card li>div{display:flex;align-items:center;gap:9px}.cram-frequency-card li b{color:#638375;font:800 9px/1 monospace}.cram-frequency-card li span{font-size:11px;font-weight:700}.cram-frequency-card li small{flex:0 0 auto;color:var(--muted);font-size:9px}.cram-method{margin:0 0 18px;padding:13px 15px;color:#416455;background:var(--mint-2);border-radius:10px;font-size:11px;line-height:1.6}.cram-set-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:11px}.cram-set-card{padding:20px;display:flex;flex-direction:column;border:1px solid var(--line);border-radius:16px;background:#fbfdfb}.cram-set-card header{display:flex;justify-content:space-between;align-items:center}.cram-set-card header span{color:#719184;font:800 11px/1 monospace}.cram-set-card header small{color:var(--muted);font-size:9px}.cram-set-card h3{margin:23px 0 5px;font-size:23px}.cram-set-card>p{margin:0;color:var(--muted);font-size:10px}.cram-set-breakdown{margin:16px 0;display:flex;gap:5px;flex-wrap:wrap}.cram-set-breakdown span{padding:5px 7px;color:#46695a;background:var(--mint-2);border-radius:6px;font-size:9px}.cram-set-card button{margin-top:auto;padding:11px 13px;display:flex;align-items:center;justify-content:space-between;color:white;background:var(--forest);border:0;border-radius:10px;cursor:pointer;font-weight:750}.cram-set-card:hover{border-color:#9dc8b3;box-shadow:0 12px 28px rgba(11,61,46,.06)}.cram-stage{margin-top:2px}.cram-stage:has(.stage-empty){min-height:300px}.cram-stage .stage-empty{min-height:300px}
.cram-frequency-card li{display:block;padding:0;overflow:visible}.cram-frequency-card li:before{display:none}.cram-frequency-card details{padding:11px 12px}.cram-frequency-card summary{display:grid;grid-template-columns:auto minmax(0,1fr) auto auto;align-items:start;gap:9px;cursor:pointer;list-style:none}.cram-frequency-card summary::-webkit-details-marker{display:none}.cram-frequency-card summary:after{content:"＋";grid-column:4;color:#6f8b7e;font-size:12px}.cram-frequency-card details[open] summary:after{content:"－"}.cram-frequency-card summary small{grid-column:3;grid-row:1;white-space:nowrap}.cram-family-title{line-height:1.45}.cram-family-translation{margin:10px 0 0;padding:10px 11px;color:#456459;background:var(--mint-2);border-radius:8px;font-size:10px;line-height:1.6}.cram-family-sources{margin-top:9px;display:flex;flex-wrap:wrap;gap:5px}.cram-family-sources button{padding:7px 9px;color:#315f4d;background:#f2f6f3;border:1px solid #dce8e1;border-radius:7px;font-size:8px;font-weight:800;cursor:pointer}.cram-family-sources button:hover{color:white;background:var(--forest);border-color:var(--forest)}.cram-board-head{padding:27px 28px;display:flex;align-items:flex-end;justify-content:space-between;gap:24px;color:white;background:linear-gradient(130deg,var(--deep),#126046);border-radius:20px}.cram-board-head h2{margin:5px 0 7px;font-size:30px}.cram-board-head p:last-child{margin:0;color:#b9d7ca;line-height:1.6}.cram-board-head .eyebrow{color:#91dfb0}.cram-board-actions{display:flex;gap:8px;flex:0 0 auto}.cram-board-actions .secondary-button{color:white;border-color:rgba(255,255,255,.28);background:rgba(255,255,255,.08)}.cram-board-actions .primary-button{width:auto}.cram-board-section{margin-top:16px;padding:22px;border:1px solid var(--line);border-radius:20px;background:white}.cram-board-section>header{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:14px;margin-bottom:17px;padding-bottom:15px;border-bottom:1px solid var(--line)}.cram-board-section>header>span{width:42px;height:42px;display:grid;place-items:center;color:white;background:var(--forest);border-radius:12px;font:800 11px/1 monospace}.cram-board-section>header h3{margin:3px 0 0;font-size:24px}.cram-board-section>header strong{padding:7px 9px;color:var(--forest);background:var(--mint);border-radius:8px;font-size:10px}.cram-board-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.cram-board-section.is-lcr .cram-board-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.cram-board-card{min-width:0;padding:15px;display:flex;flex-direction:column;border:1px solid #dce7e0;border-radius:13px;background:linear-gradient(145deg,#fff,#f7faf8)}.cram-board-card>div{display:flex;align-items:center;justify-content:space-between;gap:8px}.cram-board-number{color:#739084;font:800 9px/1 monospace}.cram-repeat{padding:4px 6px;color:#275c46;background:var(--mint);border-radius:5px;font-size:8px;font-weight:800}.cram-board-source{margin:14px 0 5px;color:var(--green);font-size:8px;font-weight:800;letter-spacing:.06em;text-transform:uppercase}.cram-board-card h4{margin:0;font-size:16px;line-height:1.4}.cram-board-topic{min-height:30px;margin:6px 0 14px;color:var(--muted);font-size:9px;line-height:1.5}.cram-board-card button{margin-top:auto;padding:9px 10px;display:flex;align-items:center;justify-content:space-between;color:white;background:var(--forest);border:0;border-radius:8px;font-size:10px;font-weight:750;cursor:pointer}.cram-board-card:hover{border-color:#9fcbb6;transform:translateY(-1px)}
@media(max-width:960px){.cram-entry{grid-template-columns:1fr auto}.cram-entry-action{grid-column:1/-1;text-align:center}.cram-set-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.cram-board-head{align-items:flex-start;flex-direction:column}.cram-board-section.is-lcr .cram-board-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:680px){.cram-entry{padding:23px;display:block}.cram-entry-stat{margin:20px 0;padding:0;border:0}.cram-entry-action{display:block}.cram-frequency-panel,.cram-set-panel{padding:18px}.cram-frequency-grid,.cram-set-grid{grid-template-columns:1fr}.cram-frequency-card summary{grid-template-columns:auto minmax(0,1fr)}.cram-frequency-card summary small{grid-column:2;grid-row:2;margin:5px 0 0}.cram-frequency-card summary:after{grid-column:1;grid-row:2}.cram-board-head,.cram-board-section{padding:18px}.cram-board-actions{width:100%;align-items:stretch;flex-direction:column}.cram-board-actions button{width:100%!important}.cram-board-section>header{grid-template-columns:auto minmax(0,1fr)}.cram-board-section>header>strong{grid-column:2}.cram-board-grid,.cram-board-section.is-lcr .cram-board-grid{grid-template-columns:1fr}}

/* Teacher learning dashboard */
.admin-shell{width:min(1240px,calc(100% - 32px))}
.admin-head>div>p:last-child{margin:10px 0 0;color:var(--muted)}
.admin-overview{margin-bottom:18px;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.admin-overview article{min-height:145px;padding:21px;display:flex;flex-direction:column;border:1px solid rgba(139,174,157,.36);border-radius:18px;background:linear-gradient(145deg,#fff,#f2faf5);box-shadow:0 12px 28px rgba(11,61,46,.04)}
.admin-overview span,.admin-detail-stats span{color:var(--muted);font-size:10px;font-weight:800;letter-spacing:.06em}
.admin-overview strong{margin:auto 0 8px;color:var(--forest);font-size:38px;line-height:1}
.admin-overview small{color:#6f897c;font-size:10px}
.admin-roster{padding:28px}.admin-section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:18px}.admin-section-head h2,.admin-section-head h3{margin:4px 0 0;font-size:24px}.admin-section-head>p{margin:0;color:var(--muted);font-size:10px}
.student-table-wrap,.progress-table-wrap{width:100%;overflow-x:auto}.student-table{min-width:980px}.student-table th{padding-block:15px}.student-table td{vertical-align:middle}
.student-identity{display:flex;align-items:flex-start;flex-direction:column;gap:7px}.student-identity strong{font-size:14px}.student-identity span{padding:5px 7px;color:var(--forest);background:var(--mint);border-radius:99px;font-size:9px;font-weight:800}.student-identity span.is-paused{color:#8b655f;background:#f5e9e5}
.last-activity{white-space:nowrap;color:var(--muted)}.learning-cell{min-width:145px}.learning-cell strong,.learning-cell span{display:block}.learning-cell strong{color:var(--ink);font-size:11px}.learning-cell span{margin-top:6px;color:var(--muted);font-size:9px}.student-actions{flex-wrap:wrap}.student-actions .view-records{color:white;border-color:var(--forest);background:var(--forest)}
.admin-progress-panel{scroll-margin-top:20px;margin-top:18px;padding:30px;border-radius:22px;color:white;background:linear-gradient(145deg,var(--deep),#0d4d39);box-shadow:0 24px 60px rgba(7,38,28,.19)}
.admin-detail-head{display:flex;align-items:flex-start;justify-content:space-between;gap:20px}.admin-detail-head .eyebrow{color:#96d9b2}.admin-detail-head h2{margin:7px 0 7px;font-size:32px}.admin-detail-head p:last-child{margin:0;color:#b8d4c8}.admin-detail-head .outline-button{color:white;border-color:rgba(255,255,255,.28);background:rgba(255,255,255,.06)}
.admin-detail-stats{margin:25px 0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}.admin-detail-stats article{padding:18px;border:1px solid rgba(255,255,255,.12);border-radius:14px;background:rgba(255,255,255,.07)}.admin-detail-stats span{display:block;color:#a8cabc}.admin-detail-stats strong{display:block;margin-top:15px;font-size:28px}
.admin-detail-section{margin-top:15px;padding:23px;color:var(--ink);background:#fbfdfb;border-radius:17px}.admin-detail-section .admin-section-head{margin-bottom:12px}.admin-detail-section .eyebrow{color:var(--green)}.admin-detail-section h3{font-size:20px}.progress-table{width:100%;min-width:760px;border-collapse:collapse}.progress-table th,.progress-table td{padding:12px 10px;border-bottom:1px solid var(--line);text-align:left;font-size:11px;white-space:nowrap}.progress-table th{color:var(--muted);font-size:9px;letter-spacing:.04em}.progress-table tbody tr:last-child td{border-bottom:0}.admin-detail-section .records-empty{padding:24px}
@media(max-width:960px){.admin-overview,.admin-detail-stats{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:680px){.admin-shell{width:min(100% - 20px,1240px);margin:22px auto}.admin-head h1{font-size:34px}.admin-overview{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.admin-overview article{min-height:125px;padding:16px}.admin-overview strong{font-size:30px}.admin-roster{padding:18px}.admin-section-head{align-items:flex-start;flex-direction:column}.student-table{min-width:0}.student-table tr{padding:16px 0;grid-template-columns:1fr 1fr}.student-table td:nth-child(5){grid-column:1/-1}.student-actions{justify-content:flex-start}.admin-progress-panel{padding:19px}.admin-detail-head{flex-direction:column}.admin-detail-head h2{font-size:25px}.admin-detail-stats{gap:7px}.admin-detail-stats article{padding:14px}.admin-detail-stats strong{font-size:23px}.admin-detail-section{padding:16px}.progress-table{min-width:680px}}