/* Home presentation, scoped so the account, library and exam keep their own UI. */
.home-landing{--lh-primary:#6470e5;--lh-ink:#eef0ff;--lh-muted:#b2b8d2;--lh-surface:#171e32;--lh-soft:#121a2d;--lh-line:#303a55;--lh-hero:#141d34;--lh-shadow:0 18px 50px #0002;width:100%;max-width:none;padding:0;color:var(--lh-ink);line-height:1.9;isolation:isolate}
html[data-theme=light] .home-landing{--lh-primary:#525dcc;--lh-ink:#252b47;--lh-muted:#646c85;--lh-surface:#fff;--lh-soft:#f7f7fd;--lh-line:#e4e5f1;--lh-hero:#f4f3ff;--lh-shadow:0 18px 50px #363f7c12}
.home-landing a{color:inherit;text-decoration:none}.home-landing button{font:inherit;color:inherit;cursor:pointer}.home-landing svg{max-width:100%}.home-landing [hidden]{display:none!important}
.home-landing a:focus-visible,.home-landing button:focus-visible,.home-landing summary:focus-visible{outline:3px solid #929bf5;outline-offset:4px}
.lh-container{width:min(1192px,calc(100% - 64px));margin-inline:auto}.lh-section{padding:76px 0}.lh-section-heading h2{font-size:clamp(26px,3vw,38px);line-height:1.7;letter-spacing:-.6px;margin:7px 0 9px;font-weight:850}.lh-section-heading p{font-size:16px;color:var(--lh-muted);margin:14px 0 0;max-width:660px}.lh-centered{text-align:center;margin:0 auto 38px;max-width:740px}.lh-centered p{margin-inline:auto}.lh-section-kicker{font-size:14px;color:var(--lh-primary);font-weight:750}.lh-title-underline{display:block;width:52px;height:4px;background:#b2adf8;border-radius:8px;margin-top:12px}.lh-centered .lh-title-underline{margin-inline:auto}
.lh-btn{display:inline-flex;justify-content:center;align-items:center;gap:12px;padding:13px 23px;border-radius:13px;min-height:50px;font-size:15px;font-weight:750;border:1px solid transparent;transition:background .18s,box-shadow .18s}.lh-btn svg{width:19px;height:19px;flex-shrink:0}.home-landing .lh-btn-primary{background:#5e69db;color:#fff;box-shadow:0 8px 22px #5e69db26}.lh-btn-primary:hover{background:#4d58c8}.home-landing .lh-btn-outline{background:var(--lh-surface);border-color:var(--lh-line);color:var(--lh-primary)}.lh-btn-outline:hover{box-shadow:var(--lh-shadow)}.lh-btn-large{padding:16px 25px;min-height:56px}.home-landing .lh-btn-white{background:#fff;color:#444fbd}.lh-inline-link{display:inline-flex;gap:12px;align-items:center;font-size:15px;font-weight:750;margin-top:18px}.home-landing .lh-inline-link{color:var(--lh-primary)}
.lh-hero{background:var(--lh-hero);position:relative;border-radius:26px;padding:38px 0 0;margin-top:4px}.lh-hero-grid{display:grid;grid-template-columns:1.06fr .94fr;gap:54px;align-items:center;min-height:520px}.lh-hero-copy{padding:18px 0 30px}.lh-eyebrow{display:inline-flex;align-items:center;gap:9px;color:var(--lh-primary);font-size:14px;font-weight:750;margin-bottom:16px}.lh-sparkle{font-size:23px}.lh-hero h1{font-size:clamp(36px,4.3vw,60px);font-weight:900;line-height:1.55;letter-spacing:-1.4px;margin:0 0 19px}.lh-hero h1 em{font-style:normal;color:var(--lh-primary);white-space:nowrap;text-decoration:underline;text-decoration-color:#e5b369;text-underline-offset:13px;text-decoration-thickness:3px}.lh-hero-desc{font-size:17px;line-height:2.15;color:var(--lh-muted);margin:0 0 25px;max-width:540px}.lh-hero-buttons{display:flex;flex-wrap:wrap;gap:12px}.lh-hero-footnote{margin-top:24px;color:var(--lh-muted);font-size:13px;max-width:470px}
.lh-hero-art{position:relative;min-width:0;height:470px;align-self:center}.lh-students{display:block;position:absolute;inset:0;width:100%;height:100%;object-fit:cover;border-radius:48% 48% 24px 24px;box-shadow:var(--lh-shadow)}.lh-doodle{position:absolute;z-index:2;pointer-events:none}.lh-star-one{top:20%;left:-7%;font-size:43px;color:#f2b171}.lh-star-two{top:0;right:4%;font-size:31px;color:#b8a3ed}.lh-float-card{position:absolute;z-index:3;display:flex;align-items:center;gap:10px;padding:12px 15px;border:1px solid var(--lh-line);background:var(--lh-surface);border-radius:14px;box-shadow:var(--lh-shadow);max-width:85%}.lh-float-card-top{top:21%;right:-24px}.lh-float-card-bottom{bottom:12%;left:-24px}.lh-float-card strong,.lh-float-card small{display:block}.lh-float-card strong{font-size:13px}.lh-float-card small{font-size:12px;color:var(--lh-muted)}.lh-float-icon{width:34px;height:34px;border-radius:10px;background:#e4f8ec;color:#25894e;display:grid;place-items:center;flex-shrink:0;font-weight:800}.lh-lavender{background:#efe9ff;color:#7361be}
.lh-stats-bar{background:#5a69d5;border-radius:18px;padding:26px 12px;display:grid;grid-template-columns:repeat(4,1fr);color:#fff;position:relative;transform:translateY(35px);box-shadow:0 14px 30px #4753ad2b}.lh-stat{display:flex;align-items:center;justify-content:center;gap:14px;padding:0 14px}.lh-stat:not(:last-child){border-inline-end:1px solid #ffffff38}.lh-stat strong,.lh-stat small{display:block}.lh-stat strong{font-size:31px;line-height:1.4;font-weight:850}.lh-stat small{font-size:13px}.lh-stat-icon{height:44px;width:44px;flex-shrink:0;display:grid;place-items:center;border-radius:12px;background:#ffffff16}.lh-stat-icon svg{width:26px;height:26px}
.lh-how{padding-top:112px}.lh-how-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:60px;align-items:center}.lh-how-item{width:100%;display:flex;align-items:center;text-align:start;gap:18px;border:1px solid transparent;background:transparent;border-radius:16px;padding:19px;margin-bottom:8px;min-height:95px}.lh-how-item.lh-selected{background:var(--lh-surface);border-color:var(--lh-line);box-shadow:var(--lh-shadow)}.lh-how-item:hover{border-color:var(--lh-line)}.lh-how-number{font-size:21px;font-weight:850;color:var(--lh-primary)}.lh-how-item strong,.lh-how-item small{display:block}.lh-how-item strong{font-size:18px;font-weight:800}.lh-how-item small{font-size:14px;color:var(--lh-muted);margin-top:5px}.lh-how-arrow{margin-inline-start:auto;color:var(--lh-primary)}
.lh-phone-scene{min-height:575px;position:relative;display:flex;align-items:center;justify-content:center}.lh-phone-orbit{width:400px;max-width:100%;aspect-ratio:1;border-radius:50%;border:2px dashed var(--lh-line);position:absolute;transform:rotate(16deg)}.lh-ring-two{width:320px;border-style:solid}.lh-orbit-cross{position:absolute;right:12%;top:13%;font-size:36px;color:#eea8b7}.lh-small-dots{position:absolute;left:6%;bottom:14%;letter-spacing:5px;color:var(--lh-primary)}.lh-phone{position:relative;width:280px;height:540px;background:#26304d;padding:9px;border:5px solid #343e5c;border-radius:38px;transform:rotate(-4deg);box-shadow:0 25px 50px #0003;color:#27304b;z-index:1}.lh-phone-notch{position:absolute;top:8px;left:50%;transform:translateX(-50%);height:16px;width:78px;border-radius:0 0 13px 13px;background:#26304d;z-index:2}.lh-phone-screen{height:100%;background:#fafaff;border-radius:25px;padding:30px 13px 10px;display:flex;flex-direction:column;overflow:hidden}.lh-phone-app-head{display:flex;align-items:center;justify-content:space-between;font-size:12px;font-weight:800}.lh-small-brand{display:flex;align-items:center;gap:5px}.lh-tiny-logo{display:grid;place-items:center;background:#6671d7;color:white;width:23px;height:23px;border-radius:6px}.lh-phone-bell{color:#7881b4}.lh-phone-hello{font-size:18px;font-weight:850;margin-top:19px}.lh-phone-sub{font-size:11px;color:#727c93;margin-top:3px}.lh-screen-tabs{display:flex;gap:4px;padding:4px;background:#efeff9;border-radius:8px;margin:13px 0;font-size:11px}.lh-screen-tabs span{flex:1;text-align:center;padding:4px}.lh-screen-tabs .lh-selected{background:#fff;color:#5563cc;border-radius:6px}.lh-phone-dynamic{flex:1;min-height:0}.lh-phone-banner{position:relative;display:flex;flex-direction:column;background:#6777df;color:#fff;padding:13px;border-radius:12px;min-height:97px;overflow:hidden}.lh-phone-banner>span{position:absolute;left:10px;top:2px;font-size:55px;opacity:.15}.lh-phone-banner strong{font-size:13px;z-index:1}.lh-phone-banner small{font-size:11px;line-height:1.7;margin-top:4px}.lh-fake-progress{height:5px;margin-top:14px;background:#ffffff45;border-radius:8px;width:84%}.lh-fake-progress span{display:block;height:100%;width:40%;background:white;border-radius:8px}.lh-phone-row{display:flex;align-items:center;gap:9px;background:white;border:1px solid #e9eaf4;padding:8px;border-radius:9px;margin-top:7px;min-height:49px}.lh-phone-row strong,.lh-phone-row small{display:block}.lh-phone-row strong{font-size:12px}.lh-phone-row small{font-size:10px;color:#727b93}.lh-phone-row b{margin-inline-start:auto;color:#8d93b7}.lh-lesson-icon{height:32px;width:32px;flex-shrink:0;border-radius:8px;display:grid;place-items:center;font-size:20px;background:#eee9fc;color:#7362bc}.lh-peach{background:#fff0e0;color:#af702b}.lh-mint{background:#e4f7ed;color:#398d67}.lh-phone-bottom{display:flex;justify-content:space-around;border-top:1px solid #e5e6f1;color:#939bb5;padding-top:7px;margin-top:8px;font-size:19px}.lh-on{color:#5e69db}.lh-preview-label{position:absolute;bottom:-13px;text-align:center;font-size:12px;color:var(--lh-muted)}
.lh-features{background:var(--lh-soft);border-radius:24px}.lh-feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.lh-feature-card{background:var(--lh-surface);border:1px solid var(--lh-line);padding:25px 22px;border-radius:18px;display:flex;flex-direction:column}.lh-feature-icon{display:grid;place-items:center;width:57px;height:57px;border-radius:16px;margin-bottom:20px}.lh-feature-icon svg{width:30px;height:30px}.lh-f-purple,.lh-sym-purple{background:#eee9fc;color:#7b5bc2}.lh-f-blue,.lh-sym-blue{background:#e8efff;color:#496ab3}.lh-f-orange,.lh-sym-orange{background:#fff0e0;color:#ad6b2a}.lh-f-pink,.lh-sym-pink{background:#ffedf3;color:#b65980}.lh-sym-green{background:#e5f6e9;color:#3c8757}.lh-feature-card h3{font-size:19px;margin:0 0 11px;line-height:1.7}.lh-feature-card p{font-size:15px;color:var(--lh-muted);margin:0 0 20px}.lh-feature-card a{color:var(--lh-primary);font-size:14px;font-weight:750;margin-top:auto}.lh-feature-card a:after{content:' ←'}
.lh-subject-head{display:flex;align-items:end;justify-content:space-between;gap:25px;margin-bottom:30px}.lh-subject-pills{display:flex;flex-wrap:wrap;gap:8px;flex-shrink:0}.lh-filter-pill{border:1px solid var(--lh-line);background:var(--lh-soft);padding:9px 19px;border-radius:30px;font-size:14px!important}.lh-filter-pill.lh-active{background:#5e69db;color:#fff;border-color:#5e69db}.lh-subject-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.lh-subject-card{display:flex;align-items:center;gap:15px;border:1px solid var(--lh-line);background:var(--lh-surface);padding:18px;border-radius:15px;transition:border-color .18s}.lh-subject-card:hover{border-color:var(--lh-primary)}.lh-subject-symbol{height:50px;width:50px;border-radius:12px;display:grid;place-items:center;font-size:27px;font-weight:750;flex-shrink:0}.lh-subject-card strong,.lh-subject-card small{display:block}.lh-subject-card strong{font-size:17px}.lh-subject-card small{font-size:13px;margin-top:3px;color:var(--lh-muted)}.lh-subject-chev{margin-inline-start:auto;color:var(--lh-primary)}.lh-subjects-footer{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-top:22px;color:var(--lh-muted);font-size:14px}.lh-subjects-footer .lh-inline-link{margin-top:0}
.lh-try-section{background:#5a68d6;color:#fff;border-radius:24px}.lh-try-grid{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}.lh-light{color:#e6e7ff}.lh-try-copy h2{font-size:clamp(29px,3vw,42px);line-height:1.7;margin:10px 0 18px}.lh-try-copy p{font-size:16px;color:#eceeff;line-height:2.1;margin-bottom:25px}.lh-quiz-card{background:var(--lh-surface);color:var(--lh-ink);padding:26px;border-radius:21px;box-shadow:0 15px 45px #222b7e38;transform:rotate(2deg)}.lh-quiz-top{display:flex;gap:9px;align-items:center;font-size:13px;font-weight:700}.lh-quiz-icon{height:32px;width:32px;border-radius:9px;display:grid;place-items:center;background:#eeeaff;color:#6f60bd}.lh-quiz-badge{margin-inline-start:auto;font-size:12px;color:var(--lh-muted)}.lh-quiz-progress{height:5px;border-radius:6px;background:var(--lh-line);margin:20px 0}.lh-quiz-progress span{display:block;width:75%;height:100%;border-radius:6px;background:#8590e9}.lh-quiz-card h3{font-size:22px;line-height:1.9;margin:0 0 22px}.lh-quiz-options{display:grid;grid-template-columns:1fr 1fr;gap:10px}.lh-quiz-options button{border:1px solid var(--lh-line);background:var(--lh-soft);padding:11px;border-radius:10px;font-size:19px}.lh-quiz-options button:hover:enabled{border-color:var(--lh-primary)}.lh-quiz-options .is-correct{background:#e0f6e8;border-color:#4aaf72;color:#236b3f}.lh-quiz-options .is-incorrect{background:#ffe7e9;border-color:#d87a85;color:#983340}.lh-quiz-result{margin-top:16px;color:var(--lh-muted);font-size:14px;min-height:30px}.lh-quiz-retry{border:0;background:transparent;padding:9px 0;color:var(--lh-primary)!important;font-size:14px}.lh-quiz-options button:disabled{cursor:default}
.lh-daily{margin:48px 0 0;border:1px solid var(--lh-line);border-radius:16px;background:var(--lh-surface);padding:0 22px}.lh-daily>summary{display:flex;align-items:center;justify-content:space-between;cursor:pointer;padding:18px 0;font-size:17px;font-weight:750;list-style:none}.lh-daily>summary::-webkit-details-marker{display:none}.lh-daily[open]>summary>span{transform:rotate(45deg)}.lh-daily #siteBulletin{padding-bottom:20px}.lh-faq-grid{display:grid;grid-template-columns:.7fr 1.3fr;gap:65px}.lh-faq .lh-btn{margin-top:23px}.lh-faq-list{min-width:0}.lh-faq-list details{border-bottom:1px solid var(--lh-line);padding:18px 0}.lh-faq-list summary{display:flex;justify-content:space-between;align-items:center;gap:16px;list-style:none;cursor:pointer;font-size:17px;font-weight:750}.lh-faq-list summary::-webkit-details-marker{display:none}.lh-faq-plus{display:grid;place-items:center;flex-shrink:0;width:30px;height:30px;border-radius:9px;background:var(--lh-soft);color:var(--lh-primary)}.lh-faq-list details[open] .lh-faq-plus{transform:rotate(45deg)}.lh-faq-list p{color:var(--lh-muted);font-size:15px;line-height:2.1;margin:12px 0 2px}.lh-last-cta{padding:0 0 48px}.lh-cta-shell{padding:38px 42px;background:#2c335a;color:#fff;display:flex;justify-content:space-between;align-items:center;gap:30px;border-radius:22px}.lh-cta-shell h2{font-size:30px;margin:7px 0}.lh-cta-shell p{font-size:15px;color:#d7daf0;margin:0}.lh-cta-shell .lh-btn{flex-shrink:0}.lh-cta-spark{display:none}
@media(max-width:1100px){.lh-container{width:calc(100% - 42px)}.lh-hero-grid{gap:30px}.lh-hero-art{height:410px}.lh-hero h1{font-size:43px}.lh-stat{padding:0 10px;gap:9px}.lh-stat small{font-size:12px}.lh-how-grid{gap:28px}.lh-feature-grid{grid-template-columns:repeat(2,1fr)}.lh-try-grid{gap:35px}.lh-subject-head{align-items:start;flex-direction:column}.lh-subject-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:760px){.lh-hero-grid{display:flex;flex-direction:column;gap:22px}.lh-hero-copy{text-align:center;padding:0}.lh-hero-buttons{justify-content:center}.lh-hero-desc,.lh-hero-footnote{margin-inline:auto}.lh-hero-art{height:auto;aspect-ratio:1;width:min(420px,90%)}.lh-hero h1{font-size:clamp(33px,6vw,45px)}.lh-hero-desc{font-size:16px}.lh-float-card-top{right:-18px}.lh-float-card-bottom{left:-18px}.lh-stats-bar{grid-template-columns:repeat(2,1fr);row-gap:23px;transform:translateY(25px)}.lh-stat{justify-content:start;padding-inline:18px}.lh-stat:nth-child(2){border:0}.lh-how{padding-top:85px}.lh-section{padding-bottom:55px}.lh-how-grid{grid-template-columns:1fr;gap:15px}.lh-phone-scene{min-height:565px}.lh-how-item{min-height:85px}.lh-try-grid,.lh-faq-grid{grid-template-columns:1fr;gap:30px}.lh-quiz-card{transform:none}.lh-cta-shell{align-items:start;flex-direction:column}.lh-cta-shell h2{font-size:26px}.lh-hero-footnote{margin-top:18px}.lh-section-heading h2{font-size:29px}}
@media(max-width:480px){.lh-container{width:calc(100% - 28px)}.lh-hero{border-radius:18px;padding-top:28px}.lh-hero-art{width:92%}.lh-float-card{padding:8px 10px;gap:7px}.lh-float-card strong{font-size:11px}.lh-float-card small{font-size:10px}.lh-float-icon{width:28px;height:28px}.lh-hero h1{font-size:34px;letter-spacing:-.8px}.lh-eyebrow{font-size:12px}.lh-btn-large{padding:13px 16px;font-size:14px;min-height:51px}.lh-hero-desc{font-size:15px}.lh-hero-footnote{font-size:12px}.lh-stat{padding-inline:8px;gap:8px}.lh-stat-icon{width:30px;height:30px}.lh-stat-icon svg{width:20px;height:20px}.lh-stat strong{font-size:25px}.lh-stat small{font-size:11px}.lh-stats-bar{padding:21px 6px}.lh-feature-grid,.lh-subject-grid{grid-template-columns:1fr}.lh-feature-card{padding:22px}.lh-feature-icon{margin-bottom:14px}.lh-section-heading h2{font-size:26px}.lh-section-heading p{font-size:15px}.lh-how-item{padding:14px 10px;gap:12px}.lh-how-item strong{font-size:16px}.lh-how-item small{font-size:13px}.lh-phone-scene{min-height:560px}.lh-phone{width:268px;transform:rotate(-2deg)}.lh-phone-orbit{width:96%}.lh-faq-list summary{font-size:16px}.lh-faq-list p{font-size:14px}.lh-quiz-card{padding:19px}.lh-quiz-top{font-size:12px}.lh-quiz-card h3{font-size:20px}.lh-try-copy h2{font-size:28px}.lh-try-copy p{font-size:15px}.lh-filter-pill{padding:8px 16px}.lh-cta-shell{padding:25px}.lh-daily{padding:0 14px}.lh-subject-card{padding:15px}.lh-phone-banner small{font-size:10px}}
/* Give the demo's three lessons their own space above its toolbar. */
.lh-phone{height:570px}.lh-phone-scene{min-height:610px}.lh-preview-label{bottom:0}
.lh-float-card-top{top:-10px}
@font-face{font-family:"BKamranHeading";src:url("/b-kamran.ttf") format("truetype");font-style:normal;font-weight:400;font-display:swap}
.lh-hero h1{font-family:"BKamranHeading","VazirmatnLocal",Tahoma,sans-serif;font-size:clamp(48px,6.4vw,88px);font-weight:700;line-height:1.35;letter-spacing:0}
@media(prefers-reduced-motion:reduce){.home-landing *{transition:none!important;scroll-behavior:auto!important}}

/* Single-line labels sit centrally beside the hero card icons. */
.lh-float-card{align-items:center;justify-content:center;min-height:58px}
.lh-float-card>span:last-child{display:flex;align-items:center;justify-content:center;text-align:center}
.lh-float-card strong{margin:0;line-height:1.7}
.lh-books-download .lh-download-icon{width:26px;height:26px;flex:0 0 26px}
@media(max-width:480px){.lh-float-card{min-height:48px}.lh-books-download .lh-download-icon{width:25px;height:25px;flex-basis:25px}}

/* Dark mode keeps subject colours on restrained outlined icon tiles. */
html[data-theme="dark"] .home-landing :is(.lh-subject-symbol,.lh-feature-icon,.lh-float-icon){background:#121724;border:1px solid currentColor;box-shadow:none}
html[data-theme="dark"] .home-landing :is(.lh-sym-purple,.lh-f-purple){color:#ad91ed}
html[data-theme="dark"] .home-landing :is(.lh-sym-blue,.lh-f-blue){color:#78a6e8}
html[data-theme="dark"] .home-landing :is(.lh-sym-orange,.lh-f-orange){color:#e8a76b}
html[data-theme="dark"] .home-landing :is(.lh-sym-pink,.lh-f-pink){color:#df83ad}
html[data-theme="dark"] .home-landing .lh-sym-green{color:#6fbf91}
html[data-theme="dark"] .home-landing .lh-float-icon{color:#6fbf91}
html[data-theme="dark"] .home-landing .lh-float-icon.lh-lavender{color:#ad91ed}