@font-face{font-family:Heebo;src:url("../../assets/fonts/heebo-hebrew-400.woff2") format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:Heebo;src:url("../../assets/fonts/heebo-hebrew-600.woff2") format("woff2");font-weight:600;font-display:swap}
@font-face{font-family:Heebo;src:url("../../assets/fonts/heebo-hebrew-700.woff2") format("woff2");font-weight:700;font-display:swap}
:root{--sef-primary:#6654c7;--sef-primary-dark:#433783;--sef-primary-soft:#f0edff;--sef-accent:#d97859;--sef-success:#24745e;--sef-success-soft:#e8f7f1;--sef-warn:#915168;--sef-warn-soft:#fff0f4;--sef-text:#27223b;--sef-muted:#6d667c;--sef-line:#e2deed;--sef-surface:#fff;--sef-bg:#f8f7fc;--sef-pastel-lilac:#f0edff;--sef-pastel-mint:#e8f7f1;--sef-pastel-peach:#fff0e7;--sef-pastel-blue:#edf5ff;--sef-pastel-yellow:#fff8dd;--sef-pastel-rose:#fff0f4;--sef-shadow:0 18px 55px rgba(62,49,112,.11);--sef-shadow-soft:0 10px 28px rgba(62,49,112,.075);--sef-radius:24px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body.sef-standalone{margin:0;background:var(--sef-bg);color:var(--sef-text)}
.sef-root{min-height:640px;background:radial-gradient(circle at 8% 8%,rgba(216,204,255,.38),transparent 25%),radial-gradient(circle at 94% 20%,rgba(212,244,231,.38),transparent 24%),radial-gradient(circle at 15% 92%,rgba(255,224,207,.3),transparent 24%),linear-gradient(180deg,#fbfaff 0%,#f7f8fc 100%);color:var(--sef-text);font-family:Heebo,Arial,sans-serif;font-size:16px;line-height:1.55;direction:rtl;-webkit-font-smoothing:antialiased}
.sef-root button,.sef-root input,.sef-root select{font:inherit}
.sef-root button{color:inherit}
.sef-root :focus-visible{outline:3px solid rgba(104,84,199,.28);outline-offset:3px}
.sef-app-shell{min-height:100vh}
.sef-topbar{position:sticky;z-index:60;top:0;display:flex;min-height:68px;align-items:center;justify-content:space-between;padding:10px max(20px,calc((100vw - 1040px)/2));border-bottom:1px solid rgba(229,226,239,.85);background:rgba(255,255,255,.9);backdrop-filter:blur(14px)}
.sef-logo-button{display:flex;width:118px;height:42px;align-items:center;justify-content:center;padding:0;border:0;background:transparent;cursor:pointer}
.sef-logo-button img{display:block;max-width:100%;max-height:38px;border-radius:8px}
.sef-course-name{color:var(--sef-muted);font-size:.86rem;font-weight:600}
.sef-back{min-height:42px;padding:8px 16px;border:1px solid var(--sef-line);border-radius:13px;background:#fff;cursor:pointer}
.sef-main{position:relative;width:min(100% - 32px,920px);margin:0 auto;padding:46px 0 80px}
.sef-main h1,.sef-main h2,.sef-main p{margin-top:0}
.sef-main h1{margin-bottom:10px;font-size:clamp(2rem,5vw,3.25rem);line-height:1.13;letter-spacing:-.035em}
.sef-main h2{line-height:1.2}
.sef-eyebrow,.sef-kicker{display:block;margin-bottom:8px;color:var(--sef-primary);font-size:.82rem;font-weight:700;letter-spacing:.03em}
.sef-primary,.sef-secondary{display:inline-flex;min-height:52px;align-items:center;justify-content:center;padding:12px 24px;border-radius:15px;font-weight:700;text-decoration:none;cursor:pointer}
.sef-primary{border:1px solid var(--sef-primary);background:var(--sef-primary);color:#fff!important;box-shadow:0 10px 24px rgba(104,84,199,.2)}
.sef-primary:hover{background:var(--sef-primary-dark);border-color:var(--sef-primary-dark)}
.sef-primary:disabled,.sef-secondary:disabled{opacity:.45;cursor:not-allowed}
.sef-secondary{border:1px solid var(--sef-line);background:#fff;color:var(--sef-primary)}
.sef-large{min-width:240px;min-height:58px;font-size:1.08rem}
.sef-auth,.sef-landing{display:grid;min-height:100vh;place-items:center;padding:32px;text-align:center;background:radial-gradient(circle at 12% 15%,rgba(238,147,76,.11),transparent 28%),radial-gradient(circle at 88% 85%,rgba(104,84,199,.13),transparent 30%),var(--sef-bg)}
.sef-auth>img,.sef-landing-logo{width:min(190px,50vw);margin-bottom:28px;border-radius:12px}
.sef-auth section,.sef-landing section{width:min(100%,650px)}
.sef-auth h1{font-size:clamp(1.6rem,4vw,2.4rem)}
.sef-landing{align-content:center;gap:8px}
.sef-landing h1{margin:0 0 12px;font-size:clamp(3rem,10vw,6.4rem);line-height:1;letter-spacing:-.055em}
.sef-subtitle{margin-bottom:6px;color:var(--sef-text);font-size:clamp(1.2rem,3vw,1.6rem)}
.sef-calm{margin-bottom:30px;color:var(--sef-muted)}
.sef-skeleton{display:grid;gap:18px;padding-top:60px}
.sef-skeleton span{display:block;height:94px;border-radius:22px;background:linear-gradient(90deg,#eeeaf6 25%,#faf9fd 50%,#eeeaf6 75%);background-size:200% 100%;animation:sef-skeleton 1.5s infinite}
.sef-skeleton span:first-child{width:60%;height:48px}
@keyframes sef-skeleton{to{background-position:-200% 0}}
.sef-home-intro{margin-bottom:28px}
.sef-home-intro>p{color:var(--sef-muted)}
.sef-today{position:relative;overflow:hidden;padding:34px;border-radius:30px;background:linear-gradient(140deg,var(--sef-primary),var(--sef-primary-dark));color:#fff;box-shadow:var(--sef-shadow)}
.sef-today:after{position:absolute;right:-80px;bottom:-90px;width:250px;height:250px;border:38px solid rgba(255,255,255,.07);border-radius:50%;content:""}
.sef-today>*{position:relative;z-index:1}
.sef-today .sef-kicker{color:#dfd8ff}
.sef-today h2{margin-bottom:8px;font-size:clamp(1.65rem,4vw,2.4rem)}
.sef-today p{color:#ebe8ff}
.sef-today .sef-primary{margin-top:10px;border-color:#fff;background:#fff;color:var(--sef-primary-dark)!important;box-shadow:none}
.sef-home-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:20px 0}
.sef-home-stats article{padding:21px;border:1px solid var(--sef-line);border-radius:18px;background:#fff}
.sef-home-stats strong,.sef-home-stats span{display:block}
.sef-home-stats strong{font-size:1.75rem;line-height:1.1}
.sef-home-stats span{margin-top:6px;color:var(--sef-muted);font-size:.84rem}
.sef-home-actions{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:12px}
.sef-home-actions button,.sef-exam-link{min-height:54px;padding:10px 16px;border:1px solid var(--sef-line);border-radius:15px;background:#fff;font-weight:600;cursor:pointer}
.sef-home-actions button:first-child{border-color:#d8d1ff;background:var(--sef-primary-soft);color:var(--sef-primary-dark)}
.sef-exam-link{width:100%;margin-top:12px}
.sef-unit-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:28px}
.sef-unit-card{padding:24px;border:1px solid var(--sef-line);border-radius:21px;background:#fff;text-align:right;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease}
.sef-unit-card:hover:not(:disabled){transform:translateY(-2px);box-shadow:var(--sef-shadow)}
.sef-unit-card>span{color:var(--sef-primary);font-size:.78rem;font-weight:700}
.sef-unit-card h2{margin:7px 0 18px;font-size:1.12rem}
.sef-unit-word-range{display:block;margin:-10px 0 14px;color:var(--sef-primary-dark);font-size:.78rem}
.sef-unit-card small{display:block;margin-top:8px;color:var(--sef-muted)}
.sef-unit-card.is-locked{opacity:.5;cursor:not-allowed}
.sef-unit-card.is-current{border-color:#bdb2ff;background:var(--sef-primary-soft);box-shadow:0 10px 28px rgba(104,84,199,.12)}
.sef-route-help{color:var(--sef-muted)}
.sef-progress{height:7px;overflow:hidden;border-radius:999px;background:#eeebf5}
.sef-progress i{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--sef-primary),#9686e5)}
.sef-unit-view>p{color:var(--sef-muted)}
.sef-unit-nav{display:flex;justify-content:space-between;gap:8px;margin-bottom:25px}.sef-unit-nav button{min-height:42px;padding:8px 14px;border:1px solid var(--sef-line);border-radius:12px;background:#fff;cursor:pointer}.sef-unit-nav button:disabled{opacity:.4;cursor:not-allowed}
.sef-current-step{display:grid;grid-template-columns:1fr auto auto;align-items:center;gap:18px;margin:22px 0 14px;padding:20px;border:1px solid #c9c0ff;border-radius:22px;background:linear-gradient(135deg,#f1eeff,#fff);box-shadow:0 10px 28px rgba(104,84,199,.08)}.sef-current-step div>span,.sef-current-step strong,.sef-current-step small{display:block}.sef-current-step div>span{margin-bottom:3px;color:var(--sef-primary);font-size:.76rem;font-weight:800}.sef-current-step strong{font-size:1.22rem}.sef-current-step small{margin-top:4px;color:var(--sef-muted)}.sef-current-progress{text-align:center}.sef-current-progress b{display:block;font-size:1.4rem}.sef-current-progress span{font-size:.72rem;color:var(--sef-muted)}
.sef-path{position:relative;display:grid;gap:12px;margin-top:30px;padding-right:22px}
.sef-path:before{position:absolute;top:24px;right:0;bottom:24px;width:2px;background:var(--sef-line);content:""}
.sef-step{position:relative;display:grid;min-height:78px;grid-template-columns:48px 1fr auto;align-items:center;gap:14px;padding:13px 18px;border:1px solid var(--sef-line);border-radius:18px;background:#fff;text-align:right;cursor:pointer}
.sef-step>span{display:grid;width:42px;height:42px;place-items:center;border-radius:50%;background:var(--sef-primary-soft);color:var(--sef-primary);font-weight:700}
.sef-step strong,.sef-step small{display:block}
.sef-step small{color:var(--sef-muted)}
.sef-step.is-complete>span{background:var(--sef-success-soft);color:var(--sef-success)}
.sef-step.is-locked{opacity:.45;cursor:not-allowed}
.sef-unit-word-summary{display:flex;align-items:center;justify-content:space-between;gap:14px;margin:24px 0 14px;padding:15px 18px;border:1px solid var(--sef-line);border-radius:17px;background:#fff}
.sef-unit-word-summary strong,.sef-unit-word-summary span{display:block}
.sef-unit-word-summary span{color:var(--sef-muted);font-size:.86rem}
.sef-step-section{margin-top:20px}.sef-step-section>header{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:10px}.sef-step-section h2{margin:0}.sef-step-section>header p{margin:3px 0 0;color:var(--sef-muted);font-size:.82rem}.sef-step-section>header>button{flex:none;min-height:42px;padding:8px 13px;border:1px solid var(--sef-line);border-radius:12px;background:#fff;color:var(--sef-primary);font-weight:700;cursor:pointer}
.sef-step-bar{display:flex;overflow-x:auto;gap:10px;padding:4px 3px 13px;scroll-snap-type:x proximity;scrollbar-width:thin}
.sef-step-bar .sef-step{flex:0 0 145px;min-height:116px;grid-template-columns:38px 1fr;grid-template-rows:auto auto;gap:7px 9px;padding:13px;scroll-snap-align:start}
.sef-step-bar .sef-step>span{width:36px;height:36px}
.sef-step-bar .sef-step strong{font-size:.9rem}
.sef-step-bar .sef-step small{grid-column:1/-1;font-size:.73rem}
.sef-step-bar .sef-step.is-recommended{border-color:#c8bfff;background:var(--sef-primary-soft);box-shadow:0 8px 22px rgba(104,84,199,.1)}
.sef-step-bar .sef-step.is-next{border-color:#d8d2fb;background:#fbfaff}
.sef-step-bar.is-expanded{display:grid;grid-template-columns:repeat(auto-fit,minmax(145px,1fr));overflow:visible;scroll-snap-type:none}.sef-step-bar.is-expanded .sef-step{width:100%;min-width:0;min-height:112px}
.sef-next-unit-preview{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-top:16px;padding:18px 20px;border:1px solid #d8d1ff;border-radius:18px;background:linear-gradient(135deg,#fff,#f5f2ff)}.sef-next-unit-preview h2{margin:2px 0 3px;font-size:1.12rem}.sef-next-unit-preview p{margin:0;color:var(--sef-muted);font-size:.86rem}.sef-next-unit-preview button{flex:none;min-height:44px;padding:9px 15px;border:0;border-radius:12px;background:var(--sef-primary);color:#fff;font-weight:700;cursor:pointer}.sef-next-unit-preview.is-finish{justify-content:flex-start;border-color:#b9dfd1;background:var(--sef-success-soft)}
.sef-unit-words{margin-top:28px;padding:23px;border:1px solid var(--sef-line);border-radius:24px;background:#fff}
.sef-unit-words header{display:flex;align-items:center;justify-content:space-between;gap:15px}
.sef-unit-words h2{margin:0}
.sef-unit-words header>button{padding:8px 13px;border:1px solid var(--sef-line);border-radius:11px;background:#fff;color:var(--sef-primary);cursor:pointer}
.sef-word-quick-actions{display:flex;overflow-x:auto;gap:8px;margin:17px 0}
.sef-word-quick-actions button{flex:none;padding:8px 12px;border:1px solid var(--sef-line);border-radius:999px;background:var(--sef-bg);cursor:pointer}
.sef-unit-word-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.sef-unit-word-grid article{display:flex;min-width:0;align-items:center;justify-content:space-between;gap:8px;padding:10px 11px;border:1px solid var(--sef-line);border-radius:12px;background:var(--sef-bg)}
.sef-unit-word-grid article div{min-width:0}
.sef-unit-word-grid strong,.sef-unit-word-grid span,.sef-unit-word-grid small{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sef-unit-word-grid span,.sef-unit-word-grid small{color:var(--sef-muted);font-size:.7rem}
.sef-unit-word-grid article.is-review{border-color:#efc3ca;background:var(--sef-warn-soft)}
.sef-unit-word-grid article.is-new{opacity:.68}
.sef-activity-head{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:18px}
.sef-activity-head h1{font-size:clamp(1.55rem,4vw,2.35rem)}
.sef-activity-head>span{flex:none;padding:8px 12px;border-radius:12px;background:#fff;color:var(--sef-muted);font-size:.82rem}
.sef-card-screen{width:min(100%,650px);margin:0 auto}
.sef-card-feedback{min-height:24px;margin:0 0 7px;color:var(--sef-muted);font-size:.86rem;text-align:center}
.sef-flashcard-deck{position:relative;width:100%;perspective:1200px}
.sef-pronounce{position:absolute;z-index:20;top:18px;left:18px;width:44px;height:44px;border:1px solid #d4cdf9;border-radius:13px;background:rgba(255,255,255,.94);color:var(--sef-primary);cursor:pointer;display:grid;place-items:center}.sef-pronounce svg{width:24px;height:24px;fill:currentColor;display:block}
.sef-flashcard{position:relative;z-index:4;display:block;width:100%;height:clamp(330px,48vh,455px);padding:0;border:0;border-radius:30px;background:transparent;cursor:grab;perspective:1200px;touch-action:pan-y;overscroll-behavior-inline:contain;-webkit-user-select:none;user-select:none;transition:transform .28s cubic-bezier(.2,.8,.2,1),opacity .25s ease}
.sef-flashcard.is-dragging{cursor:grabbing;transition:none}
.sef-flashcard.is-exiting-right{transform:translateX(125%) rotate(18deg)!important;opacity:0}
.sef-flashcard.is-exiting-left{transform:translateX(-125%) rotate(-18deg)!important;opacity:0}
.sef-flashcard-inner{position:relative;display:block;width:100%;height:100%;transform-style:preserve-3d;transition:transform .48s cubic-bezier(.2,.75,.25,1)}
.sef-flashcard.is-flipped .sef-flashcard-inner{transform:rotateY(180deg)}
.sef-card-face{position:absolute;inset:0;display:grid;overflow:hidden;place-items:center;align-content:center;gap:17px;padding:42px;border:1px solid var(--sef-line);border-radius:30px;box-shadow:var(--sef-shadow);backface-visibility:hidden}
.sef-card-face:before,.sef-card-face:after{position:absolute;width:180px;height:180px;border-radius:50%;content:""}
.sef-card-face:before{top:-95px;left:-55px;border:26px solid rgba(238,147,76,.13)}
.sef-card-face:after{right:-80px;bottom:-90px;border:32px solid rgba(255,255,255,.1)}
.sef-card-front{background:linear-gradient(145deg,#fff,#f6f3ff)}
.sef-card-back{transform:rotateY(180deg);background:linear-gradient(145deg,#7967db,var(--sef-primary-dark));color:#fff}
.sef-card-face small,.sef-card-face em,.sef-card-face span{position:relative;z-index:1;font-style:normal}
.sef-card-face small{color:var(--sef-muted)}
.sef-card-face strong{position:relative;z-index:1;max-width:94%;font-size:clamp(2.3rem,8vw,5rem);line-height:1.12;text-align:center;overflow-wrap:anywhere}
.sef-card-back strong{font-size:clamp(1.9rem,6vw,3.3rem)}
.sef-card-back span{font-size:clamp(1.1rem,3vw,1.4rem)}
.sef-card-back em{color:#e8e4ff}
.sef-swipe-stamp{position:absolute;z-index:16;top:36px;padding:7px 14px;border:3px solid currentColor;border-radius:12px;background:rgba(255,255,255,.94);font-size:1.18rem;font-weight:800;opacity:0;pointer-events:none}
.sef-swipe-stamp.is-known{right:28px;color:var(--sef-success);transform:rotate(10deg)}
.sef-swipe-stamp.is-review{left:28px;color:var(--sef-warn);transform:rotate(-10deg)}
.sef-swipe-note{display:grid;grid-template-columns:1fr 42px 1fr;align-items:center;gap:8px;margin:11px 4px 0;color:var(--sef-muted);font-size:.78rem;text-align:center}
.sef-swipe-note i{height:1px;background:var(--sef-line)}
.sef-card-actions{display:grid;grid-template-columns:1fr .78fr 1fr;gap:10px;margin-top:14px}
.sef-word-choice,.sef-flip{display:grid;min-height:64px;grid-template-columns:auto 1fr auto;align-items:center;gap:8px;padding:8px 13px;border:1px solid var(--sef-line);border-radius:15px;background:#fff;cursor:pointer}
.sef-word-choice strong,.sef-word-choice small{display:block}
.sef-word-choice small{font-size:.7rem;color:var(--sef-muted)}
.sef-word-choice.is-review{border-color:#efbdc4;color:var(--sef-warn)}
.sef-word-choice.is-known{border-color:#a9ddca;color:var(--sef-success)}
.sef-flip{display:block;color:var(--sef-primary);font-weight:600}
.sef-previous{display:block;margin:10px auto 0;padding:8px 12px;border:0;background:transparent;color:var(--sef-muted);cursor:pointer}
.sef-previous:disabled{opacity:.3;cursor:not-allowed}
.sef-keyboard{margin-top:5px;color:var(--sef-muted);font-size:.72rem;text-align:center}
.sef-question-screen{width:min(100%,760px);margin:0 auto}
.sef-question-progress{margin:-5px 0 22px}
.sef-question-card{padding:28px;border:1px solid var(--sef-line);border-radius:24px;background:#fff;box-shadow:0 10px 35px rgba(50,42,93,.06)}
.sef-question-card h2{margin-bottom:22px;font-size:clamp(1.25rem,4vw,1.8rem);white-space:pre-line}
.sef-speak-question{margin-bottom:16px;padding:7px 12px;border:1px solid var(--sef-line);border-radius:12px;background:#fff;color:var(--sef-primary);cursor:pointer;display:inline-flex;align-items:center;gap:7px}.sef-speak-question svg{width:20px;height:20px;fill:currentColor;flex:0 0 auto}
.sef-options{display:grid;gap:11px}
.sef-options button{display:grid;min-height:60px;grid-template-columns:38px 1fr;align-items:center;gap:12px;padding:10px 14px;border:1px solid var(--sef-line);border-radius:15px;background:#fff;text-align:start;cursor:pointer;transition:border-color .15s ease,background .15s ease,transform .15s ease}
.sef-options button:hover:not(:disabled){transform:translateY(-1px);border-color:#c9c1f5;background:#fbfaff}
.sef-options button b{display:grid;width:34px;height:34px;place-items:center;border-radius:10px;background:var(--sef-primary-soft);color:var(--sef-primary)}
.sef-options button.is-selected{border-color:var(--sef-primary);background:var(--sef-primary-soft)}
.sef-options button.is-correct{border-color:#9dd4bf;background:var(--sef-success-soft)}
.sef-options button.is-correct b{background:var(--sef-success);color:#fff}
.sef-options button.is-wrong{border-color:#e9b6bf;background:var(--sef-warn-soft)}
.sef-answer-pending{display:flex;align-items:center;gap:9px;margin-top:16px;color:var(--sef-muted);font-size:.92rem}
.sef-answer-pending span{width:17px;height:17px;border:2px solid #d9d4e8;border-top-color:var(--sef-primary);border-radius:50%;animation:sef-spin .65s linear infinite}
@keyframes sef-spin{to{transform:rotate(360deg)}}
.sef-feedback{margin-top:20px;padding:17px 18px;border-radius:15px}
.sef-feedback p{margin:5px 0 0}
.sef-feedback small{display:block;margin-top:6px;color:var(--sef-muted)}
.sef-feedback.is-correct{background:var(--sef-success-soft);color:#1d6449}
.sef-feedback.is-almost{background:#f7f5fb;color:var(--sef-text)}
.sef-next{display:flex;margin:18px 0 0 auto}
.sef-passage{margin-bottom:18px;border:1px solid var(--sef-line);border-radius:22px;background:#fff}
.sef-passage header{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:17px 20px}
.sef-passage h2{margin:0;font-size:1.18rem}
.sef-passage header button{padding:7px 11px;border:1px solid var(--sef-line);border-radius:10px;background:#fff;cursor:pointer}
.sef-passage-text{display:none;max-height:44vh;overflow:auto;padding:0 22px 22px;color:#302d3d;font-family:Arial,sans-serif;font-size:1.08rem;line-height:1.9;text-align:left;white-space:pre-line}
.sef-passage.is-open .sef-passage-text{display:block}
.sef-passage mark{padding:2px 1px;background:#fff0b3;color:inherit}
.sef-exam-nav{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:18px}
.sef-complete{width:min(100%,620px);margin:40px auto;padding:38px;border:1px solid var(--sef-line);border-radius:28px;background:#fff;text-align:center;box-shadow:var(--sef-shadow)}
.sef-success-mark{display:grid;width:78px;height:78px;place-items:center;margin:0 auto 20px;border-radius:50%;background:var(--sef-success-soft);color:var(--sef-success);font-size:2rem;font-weight:700}
.sef-complete h1{font-size:clamp(1.8rem,5vw,2.7rem)}
.sef-complete p{color:var(--sef-muted)}
.sef-unit-summary ul{display:grid;gap:9px;margin:24px 0;padding:0;list-style:none;text-align:right}
.sef-unit-summary li{padding:10px 14px;border-radius:12px;background:var(--sef-bg)}
.sef-unit-summary .sef-primary,.sef-unit-summary .sef-secondary,.sef-exam-result .sef-primary,.sef-exam-result .sef-secondary{width:100%;margin-top:10px}
.sef-word-filters{display:flex;overflow:auto;gap:8px;margin:22px 0;padding-bottom:5px}
.sef-word-filters button{flex:none;padding:8px 14px;border:1px solid var(--sef-line);border-radius:999px;background:#fff;cursor:pointer}
.sef-word-filters button b{display:inline-grid;min-width:23px;height:23px;place-items:center;margin-right:4px;border-radius:999px;background:var(--sef-bg);font-size:.72rem}
.sef-word-filters button.is-active{border-color:var(--sef-primary);background:var(--sef-primary-soft);color:var(--sef-primary)}
.sef-word-list{display:grid;gap:10px}
.sef-word-list article{display:grid;grid-template-columns:1fr 1fr auto;align-items:center;gap:15px;padding:16px 18px;border:1px solid var(--sef-line);border-radius:17px;background:#fff}
.sef-word-list article div{display:grid;gap:2px}
.sef-word-list article span{color:var(--sef-muted);font-size:.83rem}
.sef-word-list article em{padding:5px 9px;border-radius:999px;background:#f1eff6;color:var(--sef-muted);font-size:.72rem;font-style:normal}
.sef-word-list article em.is-strong{background:var(--sef-success-soft);color:var(--sef-success)}
.sef-word-list article em.is-review{background:var(--sef-warn-soft);color:var(--sef-warn)}
.sef-word-state{display:grid!important;justify-items:end;gap:7px!important}
.sef-word-state>div{display:flex!important;flex-direction:row!important;gap:5px!important}
.sef-word-state button{padding:5px 8px;border:1px solid var(--sef-line);border-radius:9px;background:#fff;color:var(--sef-muted);font-size:.72rem;cursor:pointer}
.sef-word-state button[data-word-choice="known"]{border-color:#b9dfd1;color:var(--sef-success)}
.sef-word-state button[data-word-choice="review"]{border-color:#efc3ca;color:var(--sef-warn)}
.sef-empty{padding:45px;border:1px solid var(--sef-line);border-radius:24px;background:#fff;text-align:center}
.sef-toast:empty{display:none}
.sef-toast{position:fixed;z-index:100;right:50%;bottom:24px;max-width:min(90vw,520px);padding:12px 18px;border-radius:13px;background:#282439;color:#fff;box-shadow:var(--sef-shadow);transform:translateX(50%)}

/* Premium pastel theme. This layer changes presentation only; learning content
   and interaction order remain untouched. */
.sef-topbar{border-bottom-color:rgba(209,202,231,.72);background:rgba(255,255,255,.82);box-shadow:0 7px 24px rgba(69,55,131,.045)}
.sef-logo-button img{filter:drop-shadow(0 4px 8px rgba(55,45,96,.09))}
.sef-back,.sef-unit-nav button,.sef-secondary{border-color:#dcd5ef;background:rgba(255,255,255,.88);box-shadow:0 5px 14px rgba(67,55,131,.045)}
.sef-primary{border-color:#6654c7;background:linear-gradient(135deg,#7563d5,#5c4ab9);box-shadow:0 11px 25px rgba(102,84,199,.22);transition:transform .18s ease,box-shadow .18s ease,filter .18s ease}
.sef-primary:hover:not(:disabled){border-color:#5947b3;background:linear-gradient(135deg,#6d5bcd,#5140a7);box-shadow:0 14px 30px rgba(102,84,199,.27);transform:translateY(-1px)}
.sef-eyebrow,.sef-kicker{color:#6552bd}
.sef-auth,.sef-landing{background:radial-gradient(circle at 14% 18%,rgba(255,211,190,.58),transparent 27%),radial-gradient(circle at 87% 19%,rgba(210,239,255,.62),transparent 28%),radial-gradient(circle at 78% 86%,rgba(210,243,229,.65),transparent 29%),radial-gradient(circle at 18% 86%,rgba(222,211,255,.64),transparent 29%),linear-gradient(160deg,#fff,#faf8ff)}
.sef-landing section{padding:36px 30px;border:1px solid rgba(223,217,240,.82);border-radius:34px;background:rgba(255,255,255,.68);box-shadow:0 24px 70px rgba(70,57,123,.11);backdrop-filter:blur(14px)}
.sef-landing-logo{filter:drop-shadow(0 9px 18px rgba(52,43,88,.12))}
.sef-today{border:1px solid rgba(255,255,255,.26);background:radial-gradient(circle at 12% 12%,rgba(255,218,195,.24),transparent 31%),linear-gradient(135deg,#7868d5 0%,#6352bf 52%,#52439e 100%);box-shadow:0 22px 52px rgba(73,58,147,.22)}
.sef-today:before{position:absolute;top:-58px;left:-42px;width:180px;height:180px;border-radius:50%;background:rgba(206,241,229,.12);content:""}
.sef-today:after{border-color:rgba(255,225,208,.1)}
.sef-today .sef-primary{border-color:#fff;background:#fff;color:#493b91!important;box-shadow:0 8px 21px rgba(44,35,92,.15)}
.sef-home-stats article{border-color:rgba(217,211,234,.8);box-shadow:var(--sef-shadow-soft)}
.sef-home-stats article:nth-child(1){background:linear-gradient(145deg,#fff,var(--sef-pastel-mint))}
.sef-home-stats article:nth-child(2){background:linear-gradient(145deg,#fff,var(--sef-pastel-rose))}
.sef-home-stats article:nth-child(3){background:linear-gradient(145deg,#fff,var(--sef-pastel-blue))}
.sef-home-stats article:nth-child(1) strong{color:#26735e}.sef-home-stats article:nth-child(2) strong{color:#915168}.sef-home-stats article:nth-child(3) strong{color:#5363a7}
.sef-home-actions button,.sef-exam-link{border-color:#ded9ec;background:rgba(255,255,255,.88);box-shadow:0 7px 18px rgba(69,55,131,.05);transition:transform .18s ease,box-shadow .18s ease}
.sef-home-actions button:hover,.sef-exam-link:hover{box-shadow:var(--sef-shadow-soft);transform:translateY(-1px)}
.sef-home-actions button:first-child{border-color:#cfc5fa;background:linear-gradient(135deg,#f0edff,#e9e5ff)}
.sef-unit-card{overflow:hidden;border-color:rgba(218,212,234,.9);box-shadow:0 8px 24px rgba(67,55,131,.055)}
.sef-unit-card:nth-child(4n+1){background:linear-gradient(145deg,#fff 45%,#f2efff)}
.sef-unit-card:nth-child(4n+2){background:linear-gradient(145deg,#fff 45%,#eaf8f3)}
.sef-unit-card:nth-child(4n+3){background:linear-gradient(145deg,#fff 45%,#fff1e9)}
.sef-unit-card:nth-child(4n){background:linear-gradient(145deg,#fff 45%,#edf5ff)}
.sef-unit-card.is-current{border-color:#b9adf2;background:linear-gradient(145deg,#fff,#eae5ff);box-shadow:0 15px 34px rgba(92,74,181,.15)}
.sef-progress{background:rgba(99,83,151,.1)}
.sef-progress i{background:linear-gradient(90deg,#8b7be1,#6654c7,#65ae98)}
.sef-current-step{border-color:#c4b9f5;background:radial-gradient(circle at 8% 20%,rgba(255,219,199,.55),transparent 34%),linear-gradient(135deg,#f1edff,#fff 58%,#eaf8f3);box-shadow:0 16px 38px rgba(81,65,157,.12)}
.sef-unit-word-summary{border-color:#d8d1ef;background:linear-gradient(100deg,#f0edff,#fff 48%,#edf8f4);box-shadow:0 8px 22px rgba(67,55,131,.055)}
.sef-step-section>header>button{border-color:#d7cff3;background:linear-gradient(145deg,#fff,#f0edff);box-shadow:0 6px 16px rgba(73,59,142,.055)}
.sef-step-bar .sef-step{border-color:#ddd7eb;box-shadow:0 7px 18px rgba(68,56,123,.045);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.sef-step-bar .sef-step:hover{box-shadow:0 12px 24px rgba(68,56,123,.09);transform:translateY(-2px)}
.sef-step-bar .sef-step[data-kind="words"]{background:linear-gradient(145deg,#fff,#f0edff)}
.sef-step-bar .sef-step[data-kind="practice"]{background:linear-gradient(145deg,#fff,#fff0e7)}
.sef-step-bar .sef-step[data-kind="sentence"]{background:linear-gradient(145deg,#fff,#e8f7f1)}
.sef-step-bar .sef-step[data-kind="reading"]{background:linear-gradient(145deg,#fff,#edf5ff)}
.sef-step-bar .sef-step[data-kind="summary"]{background:linear-gradient(145deg,#fff,#fff8dd)}
.sef-step-bar .sef-step[data-kind="practice"]>span{background:#ffeadf;color:#a9573e}.sef-step-bar .sef-step[data-kind="sentence"]>span{background:#dff3eb;color:#24745e}.sef-step-bar .sef-step[data-kind="reading"]>span{background:#e2efff;color:#5267a8}.sef-step-bar .sef-step[data-kind="summary"]>span{background:#fff0bd;color:#846519}
.sef-step-bar .sef-step.is-recommended{border-color:#a99ae9;background:linear-gradient(145deg,#ece7ff,#fff);box-shadow:0 12px 28px rgba(102,84,199,.16)}
.sef-step-bar .sef-step.is-next{border-color:#dfc7b8;background:linear-gradient(145deg,#fff,#fff0e7)}
.sef-next-unit-preview{border-color:#cfc5f5;background:radial-gradient(circle at 8% 20%,rgba(255,224,207,.62),transparent 34%),linear-gradient(135deg,#fff,#f0edff 72%,#e9f7f2);box-shadow:0 10px 28px rgba(74,60,139,.08)}
.sef-next-unit-preview button{background:linear-gradient(135deg,#7563d5,#5947ad);box-shadow:0 8px 19px rgba(93,74,183,.18)}
.sef-unit-words{border-color:#dad4e8;background:rgba(255,255,255,.82);box-shadow:0 14px 36px rgba(69,56,124,.07);backdrop-filter:blur(8px)}
.sef-word-quick-actions button:nth-child(1){background:var(--sef-pastel-mint)}.sef-word-quick-actions button:nth-child(2){background:var(--sef-pastel-rose)}.sef-word-quick-actions button:nth-child(3){background:var(--sef-pastel-blue)}
.sef-unit-word-grid article{border-color:#e2ddec;background:linear-gradient(145deg,#fff,#f7f5fc)}
.sef-unit-word-grid article.is-learning,.sef-unit-word-grid article.is-strengthening,.sef-unit-word-grid article.is-strong{background:linear-gradient(145deg,#fff,var(--sef-pastel-mint))}
.sef-unit-word-grid article.is-review{border-color:#e8becb;background:linear-gradient(145deg,#fff,var(--sef-pastel-rose))}
.sef-card-front{border-color:#d8cff5;background:radial-gradient(circle at 18% 12%,rgba(255,218,198,.65),transparent 31%),radial-gradient(circle at 88% 88%,rgba(208,241,230,.7),transparent 32%),linear-gradient(145deg,#fff,#efebff)}
.sef-card-back{border-color:#7b6bc8;background:radial-gradient(circle at 12% 15%,rgba(255,219,198,.19),transparent 29%),radial-gradient(circle at 89% 86%,rgba(201,240,226,.16),transparent 30%),linear-gradient(145deg,#7664d0,#493b91);box-shadow:0 22px 52px rgba(73,58,147,.22)}
.sef-pronounce{border-color:#cabff3;background:rgba(255,255,255,.9);box-shadow:0 7px 18px rgba(75,60,145,.1)}
.sef-word-choice,.sef-flip{box-shadow:0 7px 18px rgba(67,55,131,.045)}
.sef-word-choice.is-review{background:linear-gradient(145deg,#fff,var(--sef-pastel-rose))}.sef-word-choice.is-known{background:linear-gradient(145deg,#fff,var(--sef-pastel-mint))}.sef-flip{background:linear-gradient(145deg,#fff,var(--sef-pastel-lilac))}
.sef-question-card{border-color:#dcd5ed;background:radial-gradient(circle at 6% 5%,rgba(225,216,255,.42),transparent 29%),linear-gradient(145deg,rgba(255,255,255,.98),rgba(253,252,255,.96));box-shadow:0 16px 42px rgba(69,56,124,.09)}
.sef-activity-head>span{border:1px solid #ded8ed;background:linear-gradient(145deg,#fff,#f1eeff);box-shadow:0 5px 14px rgba(68,56,123,.045)}
.sef-speak-question{border-color:#d7cff1;background:linear-gradient(145deg,#fff,#f0edff)}
.sef-options button{border-color:#dfdaeb;box-shadow:0 5px 14px rgba(69,56,124,.035)}
.sef-options button:nth-child(4n+1):not(.is-selected):not(.is-correct):not(.is-wrong){background:linear-gradient(145deg,#fff,#f4f1ff)}
.sef-options button:nth-child(4n+2):not(.is-selected):not(.is-correct):not(.is-wrong){background:linear-gradient(145deg,#fff,#eef8f4)}
.sef-options button:nth-child(4n+3):not(.is-selected):not(.is-correct):not(.is-wrong){background:linear-gradient(145deg,#fff,#fff3ec)}
.sef-options button:nth-child(4n):not(.is-selected):not(.is-correct):not(.is-wrong){background:linear-gradient(145deg,#fff,#f0f6ff)}
.sef-feedback.is-correct{border:1px solid #b6dfd0;background:linear-gradient(135deg,#e4f6ef,#f5fcf9)}
.sef-feedback.is-almost{border:1px solid #ead1d9;background:linear-gradient(135deg,#fff0f4,#fff9fa)}
.sef-passage{border-color:#d9d4e9;background:linear-gradient(145deg,#fff,#f0f6ff);box-shadow:0 10px 28px rgba(69,56,124,.06)}
.sef-passage mark{border-radius:4px;background:#ffefac}
.sef-complete{border-color:#d5cfeb;background:radial-gradient(circle at 8% 8%,rgba(255,218,198,.55),transparent 28%),radial-gradient(circle at 92% 90%,rgba(205,241,228,.6),transparent 28%),linear-gradient(145deg,#fff,#f1eeff);box-shadow:0 22px 55px rgba(70,56,130,.13)}
.sef-success-mark{border:1px solid #b8dfd1;background:linear-gradient(145deg,#f7fffb,#dff4ec);box-shadow:0 9px 22px rgba(36,116,94,.12)}
.sef-unit-summary li:nth-child(4n+1){background:var(--sef-pastel-lilac)}.sef-unit-summary li:nth-child(4n+2){background:var(--sef-pastel-mint)}.sef-unit-summary li:nth-child(4n+3){background:var(--sef-pastel-peach)}.sef-unit-summary li:nth-child(4n){background:var(--sef-pastel-blue)}
.sef-word-filters button,.sef-word-list article{border-color:#ded8eb;box-shadow:0 6px 16px rgba(68,56,123,.04)}
.sef-word-filters button.is-active{border-color:#b9adf0;background:linear-gradient(145deg,#eee9ff,#fff)}
.sef-word-list article:nth-child(4n+1){background:linear-gradient(145deg,#fff,#f5f2ff)}.sef-word-list article:nth-child(4n+2){background:linear-gradient(145deg,#fff,#eff9f5)}.sef-word-list article:nth-child(4n+3){background:linear-gradient(145deg,#fff,#fff4ee)}.sef-word-list article:nth-child(4n){background:linear-gradient(145deg,#fff,#f1f7ff)}
.sef-empty{border-color:#d8d1eb;background:linear-gradient(145deg,#fff,#f2efff);box-shadow:var(--sef-shadow-soft)}

@media(max-width:680px){
  .sef-topbar{min-height:60px;padding:8px 16px}.sef-logo-button{width:96px}.sef-main{width:min(100% - 24px,920px);padding:28px 0 60px}.sef-main h1{font-size:2.05rem}.sef-landing{padding:22px}.sef-landing h1{font-size:3.25rem}.sef-home-stats{grid-template-columns:1fr 1fr}.sef-home-stats article:last-child{grid-column:1/-1}.sef-home-actions{grid-template-columns:1fr 1fr}.sef-home-actions button:first-child{grid-column:1/-1}.sef-unit-grid{grid-template-columns:1fr}.sef-today{padding:27px 23px}.sef-step{grid-template-columns:44px 1fr;padding:12px}.sef-step small{grid-column:2}.sef-card-face{padding:28px}.sef-flashcard{height:clamp(315px,47vh,410px)}.sef-card-actions{grid-template-columns:1fr 1fr}.sef-flip{grid-column:1/-1;grid-row:2}.sef-keyboard{display:none}.sef-question-card{padding:19px}.sef-options button{min-height:58px;padding:9px 10px}.sef-passage-text{max-height:38vh;padding:0 17px 17px;font-size:1rem}.sef-complete{margin:15px auto;padding:28px 20px}.sef-word-list article{grid-template-columns:1fr 1fr}.sef-word-list article em{grid-column:1/-1;justify-self:start}.sef-activity-head{gap:10px}.sef-activity-head h1{font-size:1.55rem}
}

@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.sef-root *{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}.sef-flashcard.is-exiting-right,.sef-flashcard.is-exiting-left{opacity:0}}

@media(max-width:680px){.sef-unit-word-summary{display:block}.sef-unit-word-summary span{margin-top:4px}.sef-step-bar .sef-step{flex-basis:132px;display:grid;grid-template-columns:34px 1fr;grid-template-rows:auto auto;min-height:108px}.sef-step-bar .sef-step small{grid-column:1/-1}.sef-unit-words{padding:18px 14px}.sef-unit-word-grid{grid-template-columns:repeat(2,1fr)}.sef-word-list article{grid-template-columns:1fr}.sef-word-list article em{grid-column:auto}.sef-word-state{justify-items:start}.sef-word-state>div{flex-wrap:wrap}}
@media(max-width:680px){.sef-current-step{grid-template-columns:1fr auto;padding:17px}.sef-current-step .sef-primary{grid-column:1/-1;width:100%}.sef-unit-nav button{padding:7px 10px}.sef-current-progress b{font-size:1.2rem}}
@media(max-width:680px){.sef-step-section>header{align-items:flex-start}.sef-step-section>header>button{max-width:125px}.sef-step-bar.is-expanded{grid-template-columns:repeat(2,minmax(0,1fr))}.sef-step-bar.is-expanded .sef-step{min-height:120px}}
@media(max-width:680px){.sef-next-unit-preview{display:block}.sef-next-unit-preview button{width:100%;margin-top:13px}.sef-step-bar .sef-step strong{font-size:.82rem}}