/* Noandishan v18 — mobile-first professional learning experience */
.v18-learning{max-width:1380px;margin:0 auto;padding:22px 22px 120px;font-family:Vazirmatn,Tahoma,Arial,sans-serif;color:#17243a}
.v18-learning *{box-sizing:border-box}
.v18-learning-head{display:flex;align-items:center;justify-content:space-between;gap:20px;background:linear-gradient(135deg,#102d5b,#3157d5 58%,#5e7ee5);color:#fff;border-radius:28px;padding:28px 30px;box-shadow:0 20px 55px rgba(37,72,150,.24);overflow:hidden;position:relative}
.v18-learning-head:after{content:"";position:absolute;width:260px;height:260px;border:42px solid rgba(255,255,255,.08);border-radius:50%;left:-90px;top:-115px}
.v18-learning-head>div:first-child{position:relative;z-index:1}.v18-learning-head span{display:block;font-size:13px;font-weight:800;color:#cfe0ff;margin-bottom:7px}.v18-learning-head h1{font-size:clamp(25px,4vw,42px);margin:0 0 8px;font-weight:950}.v18-learning-head p{margin:0;line-height:1.9;color:#eef4ff}.v18-total-progress{min-width:120px;height:120px;border-radius:50%;background:rgba(255,255,255,.14);border:2px solid rgba(255,255,255,.28);display:grid;place-items:center;text-align:center;backdrop-filter:blur(12px);position:relative;z-index:1}.v18-total-progress b{display:block;font-size:28px}.v18-total-progress span{color:#fff;margin:0;font-size:12px}
.v18-lesson-rail{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:18px 0}.v18-lesson-rail button{display:grid;grid-template-columns:48px 1fr;grid-template-rows:auto auto;gap:2px 12px;text-align:right;padding:15px 16px;border-radius:19px;border:1px solid #dbe5f3;background:#fff;color:#33445f;box-shadow:0 8px 24px rgba(33,56,95,.07);cursor:pointer}.v18-lesson-rail button>span{grid-row:1/3;width:42px;height:42px;border-radius:15px;background:#edf3ff;color:#3157d5;display:grid;place-items:center;font-weight:950}.v18-lesson-rail b{font-size:15px}.v18-lesson-rail small{color:#718098}.v18-lesson-rail button.active{border-color:#3157d5;box-shadow:0 10px 30px rgba(49,87,213,.17)}.v18-lesson-rail button.active>span{background:#3157d5;color:#fff}.v18-lesson-rail button.passed{border-color:#9edbc8;background:#f4fffb}.v18-lesson-rail button.passed>span{background:#1f9d72;color:#fff}.v18-lesson-rail button.locked{opacity:.55;cursor:not-allowed}
.v18-phase-rail{display:grid;grid-template-columns:repeat(4,1fr);gap:9px;margin:0 0 18px}.v18-phase-rail>div{display:flex;align-items:center;gap:9px;padding:11px 13px;border-radius:15px;background:#edf1f6;color:#718096;font-size:13px}.v18-phase-rail span{width:26px;height:26px;border-radius:10px;background:#fff;display:grid;place-items:center;font-weight:900}.v18-phase-rail .active{background:#fff4e4;color:#9b5c06;border:1px solid #f1d29c}.v18-phase-rail .active span{background:#e58b21;color:#fff}.v18-phase-rail .done{background:#eaf8f3;color:#15775a}.v18-phase-rail .done span{background:#1f9d72;color:#fff}
.v18-slide,.v18-question-page,.v18-result{background:#fff;border:1px solid #e1e8f2;border-radius:28px;box-shadow:0 18px 55px rgba(29,52,86,.09);overflow:hidden}.v18-slide{padding-bottom:26px}.v18-slide-hero{background:linear-gradient(135deg,color-mix(in srgb,var(--lesson) 13%,white),#fff);padding:32px;display:flex;justify-content:space-between;align-items:center;gap:25px;border-bottom:1px solid #e6edf6}.v18-slide-hero>div:first-child{max-width:840px}.v18-slide-hero span{color:var(--lesson);font-weight:900;font-size:13px}.v18-slide-hero h1{font-size:clamp(27px,4vw,43px);line-height:1.45;margin:8px 0 10px}.v18-slide-hero p{margin:0;color:#52627a;line-height:2}.v18-slide-badge{width:138px;height:138px;border-radius:42px;background:var(--lesson);color:white;display:grid;place-items:center;text-align:center;transform:rotate(-4deg);box-shadow:0 22px 42px color-mix(in srgb,var(--lesson) 30%,transparent)}.v18-slide-badge b{font-size:48px;line-height:1}.v18-slide-badge span{color:#fff;font-size:12px}
.v18-demo{margin:24px 30px;background:linear-gradient(180deg,#f8fbff,#f3f7fc);border:1px solid #dce7f5;border-radius:24px;padding:18px 20px}.v18-demo-head{display:flex;justify-content:space-between;align-items:center;gap:16px}.v18-demo-head b{display:block;font-size:18px}.v18-demo-head span{display:block;color:#718098;font-size:13px;margin-top:3px}.v18-demo output{padding:10px 14px;background:#fff;border:1px solid #dce5f1;border-radius:13px;color:#3157d5;font-weight:800}.v18-axis-svg{width:100%;height:auto;display:block}.v18-range{width:100%;accent-color:#3157d5}.v18-mirror{display:grid;grid-template-columns:1fr 120px 1fr;gap:10px;align-items:center;margin:22px 0}.v18-mirror-side{height:110px;border-radius:24px;display:grid;place-items:center;font-size:34px;font-weight:950}.v18-mirror-side.neg{background:#fff0f3;color:#c33a60}.v18-mirror-side.pos{background:#eaf8f3;color:#13815e}.v18-mirror-center{text-align:center;border-right:2px dashed #9caabd;border-left:2px dashed #9caabd}.v18-mirror-center b{font-size:28px}.v18-mirror-center small{display:block;color:#7a8799}.v18-compare-controls{display:grid;grid-template-columns:1fr 1fr;gap:18px}.v18-compare-controls label{font-weight:800;color:#475872}
.v18-key-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;padding:0 30px 28px}.v18-key-grid article{border:1px solid #e1e8f2;border-radius:20px;padding:20px;background:#fff;position:relative}.v18-key-grid article>span{position:absolute;left:16px;top:16px;width:31px;height:31px;border-radius:11px;background:#edf3ff;color:#3157d5;display:grid;place-items:center;font-weight:950}.v18-key-grid h3{margin:0 0 9px;font-size:18px}.v18-key-grid p{margin:0;color:#5f6e82;line-height:1.9;font-size:14px}
.v18-examples{padding:5px 30px}.v18-section-title{display:flex;justify-content:space-between;align-items:end;gap:18px;margin:8px 0 18px}.v18-section-title span{color:#e58b21;font-weight:900;font-size:13px}.v18-section-title h2{margin:4px 0 0;font-size:24px}.v18-section-title small{color:#718098}.v18-example{display:grid;grid-template-columns:56px 1fr;gap:16px;padding:21px;border:1px solid #e1e8f2;border-radius:21px;margin-bottom:12px;background:linear-gradient(180deg,#fff,#fbfcff)}.v18-example-no{width:48px;height:48px;border-radius:16px;background:#102d5b;color:#fff;display:grid;place-items:center;font-size:19px;font-weight:950}.v18-example h3{margin:0 0 9px}.v18-math{direction:rtl;background:#f4f7fb;border-right:5px solid #3157d5;border-radius:14px;padding:13px 15px;font-size:18px;font-weight:850;line-height:1.8}.v18-example ol{margin:12px 0;padding-right:22px;color:#52627a;line-height:2}.v18-example-answer{display:inline-block;background:#eaf8f3;color:#15775a;border-radius:12px;padding:9px 13px}.v18-slide-footer{margin:24px 30px 0;background:#102d5b;color:#fff;border-radius:21px;padding:18px 20px;display:flex;align-items:center;justify-content:space-between;gap:16px}.v18-slide-footer b,.v18-slide-footer span{display:block}.v18-slide-footer span{color:#cfdbef;font-size:13px;margin-top:4px}.v18-slide-footer button,.v18-q-actions button:last-child,.v18-result-actions button:last-child{border:0;background:#e58b21;color:#fff;border-radius:14px;padding:13px 18px;font:inherit;font-weight:900;cursor:pointer}
.v18-question-page{padding:28px}.v18-q-head{display:flex;align-items:center;justify-content:space-between;gap:18px}.v18-q-head>div:first-child>span{color:#3157d5;font-size:13px;font-weight:900}.v18-q-head h1{margin:5px 0 7px;font-size:31px}.v18-q-head p{margin:0;color:#617086;line-height:1.8}.v18-score-pill{background:#eaf8f3;color:#15775a;border:1px solid #bfe7d9;border-radius:999px;padding:11px 16px;font-weight:900;white-space:nowrap}.v18-score-pill.danger{background:#fff3e5;color:#a25f06;border-color:#f3d0a0}.v18-q-progress{height:10px;background:#edf1f6;border-radius:99px;overflow:hidden;margin:20px 0}.v18-q-progress i{display:block;height:100%;background:linear-gradient(90deg,#3157d5,#1f9d72);border-radius:99px}.v18-q-card{border:1px solid #dfe7f2;border-radius:23px;padding:24px;background:linear-gradient(180deg,#fff,#fbfcff)}.v18-q-meta{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}.v18-q-meta span{background:#edf3ff;color:#3157d5;border-radius:999px;padding:7px 11px;font-size:12px;font-weight:850}.v18-q-meta span.hard{background:#fff0f3;color:#bc365c}.v18-q-card h2{font-size:clamp(20px,3vw,29px);line-height:1.8;margin:0 0 18px}.v18-options{display:grid;grid-template-columns:1fr 1fr;gap:11px}.v18-options.two{grid-template-columns:1fr 1fr}.v18-options button{display:flex;align-items:center;gap:11px;text-align:right;min-height:63px;border:2px solid #e1e7f0;background:#fff;border-radius:17px;padding:11px 13px;color:#2f4059;font:inherit;cursor:pointer}.v18-options button>span{width:34px;height:34px;border-radius:12px;background:#edf3ff;color:#3157d5;display:grid;place-items:center;flex:0 0 auto;font-weight:950}.v18-options button.selected{border-color:#3157d5;background:#f3f6ff;box-shadow:0 9px 24px rgba(49,87,213,.12)}.v18-options button.selected>span{background:#3157d5;color:#fff}.v18-input{display:block}.v18-input span{display:block;font-weight:850;margin-bottom:8px}.v18-input input{width:100%;border:2px solid #dce5f0;border-radius:15px;padding:14px;font:inherit;font-size:18px;outline:none}.v18-input input:focus{border-color:#3157d5;box-shadow:0 0 0 4px rgba(49,87,213,.09)}.v18-note{background:#fff7e8;color:#89570d;border-radius:13px;padding:10px 13px;margin-bottom:10px;font-size:13px}.v18-order-source{display:flex;flex-wrap:wrap;gap:9px}.v18-order-source button{border:1px solid #dce5f0;background:#fff;border-radius:13px;padding:10px 13px;font:inherit;cursor:pointer}.v18-order-source button:disabled{opacity:.4}.v18-order-target{min-height:64px;margin:12px 0;background:#f4f7fb;border:1px dashed #aebed2;border-radius:15px;padding:12px;display:flex;flex-wrap:wrap;gap:8px;color:#65748a}.v18-order-target span{background:#fff;border:1px solid #dce5f0;border-radius:11px;padding:8px 10px;color:#33445f}.v18-feedback,.v18-hint{margin-top:14px;border-radius:15px;padding:13px 15px;line-height:1.85}.v18-hint{background:#fff7e8;color:#89570d;border:1px solid #f1d7ac}.v18-feedback.ok{background:#eaf8f3;color:#126d52;border:1px solid #bde4d6}.v18-feedback.bad{background:#fff0f3;color:#a72e52;border:1px solid #efc6d3}.v18-feedback p,.v18-hint p{margin:4px 0 0}.v18-q-actions{display:flex;align-items:center;justify-content:space-between;gap:11px;margin-top:18px}.v18-q-actions>span{color:#718098;font-size:13px}.v18-q-actions button{border:1px solid #d9e2ee;background:#fff;color:#3c4d65;border-radius:14px;padding:12px 16px;font:inherit;font-weight:850;cursor:pointer}.v18-q-actions button:disabled{opacity:.4;cursor:not-allowed}.v18-q-actions .v18-hint-btn{background:#fff7e8;color:#8c5a0e;border-color:#f1d7ac}.v18-ghost{border:1px solid #d9e2ee!important;background:#fff!important;color:#46566c!important}.v18-mastery-status{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:14px}.v18-mastery-status>span{color:#718098}.v18-mastery-status>div{display:flex;gap:5px;margin-right:auto;overflow:auto}.v18-mastery-status button{width:32px;height:32px;border-radius:10px;border:1px solid #dce5f0;background:#fff;cursor:pointer}.v18-mastery-status button.active{background:#3157d5;color:#fff}.v18-mastery-status button.answered{border-color:#1f9d72;box-shadow:inset 0 -4px #1f9d72}
.v18-result{padding:28px}.v18-result-hero{display:grid;grid-template-columns:190px 1fr;gap:24px;align-items:center;border-radius:23px;padding:24px;background:linear-gradient(135deg,#f4f7fb,#fff)}.v18-result.passed .v18-result-hero{background:linear-gradient(135deg,#eaf8f3,#fff)}.v18-result.repair .v18-result-hero{background:linear-gradient(135deg,#fff2e3,#fff)}.v18-result-ring{width:164px;height:164px;border-radius:50%;display:grid;place-items:center;background:conic-gradient(#1f9d72 calc(var(--score)*1%),#dfe7f0 0);position:relative}.v18-result-ring:before{content:"";position:absolute;inset:14px;border-radius:50%;background:#fff}.v18-result-ring>div{position:relative;text-align:center}.v18-result-ring b{display:block;font-size:34px}.v18-result-ring span{font-size:12px;color:#65748a}.v18-result-hero>div:last-child>span{color:#e58b21;font-weight:900}.v18-result-hero h1{font-size:30px;margin:6px 0 8px}.v18-result-hero p{margin:0;color:#5f6f84;line-height:1.9}.v18-result-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:11px;margin:16px 0}.v18-result-stats>div{background:#f6f8fb;border:1px solid #e1e8f2;border-radius:17px;padding:15px;text-align:center}.v18-result-stats b{display:block;font-size:23px;color:#3157d5}.v18-result-stats span{font-size:12px;color:#718098}.v18-analysis-list article{display:grid;grid-template-columns:42px 1fr;gap:12px;padding:15px;border-radius:16px;margin-bottom:9px;border:1px solid #e1e8f2}.v18-analysis-list article>span{width:34px;height:34px;border-radius:12px;display:grid;place-items:center;font-weight:950}.v18-analysis-list article.ok>span{background:#eaf8f3;color:#16805e}.v18-analysis-list article.bad>span{background:#fff0f3;color:#b93258}.v18-analysis-list h3{margin:0 0 5px;font-size:15px}.v18-analysis-list p{margin:0;color:#46566c}.v18-analysis-list small{display:block;margin-top:5px;color:#718098;line-height:1.8}.v18-result-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:18px}.v18-result-actions button{border:1px solid #d9e2ee;background:#fff;color:#46566c;border-radius:14px;padding:12px 16px;font:inherit;font-weight:850;cursor:pointer}
.v18-training-lock{max-width:760px;margin:70px auto;text-align:center;background:#fff;border:1px solid #e1e8f2;border-radius:25px;padding:35px;box-shadow:0 18px 50px rgba(30,53,87,.08)}.v18-training-lock span{font-size:45px}.v18-training-lock h2{margin:10px 0}.v18-training-lock p{color:#64748b;line-height:1.9}
@media(max-width:900px){.v18-learning{padding:12px 12px 105px}.v18-learning-head{padding:21px;border-radius:22px}.v18-total-progress{width:92px;height:92px;min-width:92px}.v18-total-progress b{font-size:22px}.v18-lesson-rail{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:4px}.v18-lesson-rail button{min-width:255px;scroll-snap-align:start}.v18-phase-rail{display:flex;overflow-x:auto}.v18-phase-rail>div{min-width:170px}.v18-slide-hero{padding:23px}.v18-slide-badge{width:96px;height:96px;border-radius:28px}.v18-slide-badge b{font-size:34px}.v18-key-grid{grid-template-columns:1fr;padding:0 18px 20px}.v18-demo,.v18-examples,.v18-slide-footer{margin-left:18px;margin-right:18px}.v18-examples{padding:0}.v18-result-stats{grid-template-columns:1fr 1fr}}
@media(max-width:640px){.v18-learning-head{align-items:flex-start}.v18-learning-head p{font-size:13px}.v18-total-progress{width:74px;height:74px;min-width:74px}.v18-total-progress b{font-size:18px}.v18-slide-hero{display:block}.v18-slide-badge{display:none}.v18-demo-head{display:block}.v18-demo output{display:block;margin-top:10px}.v18-mirror{grid-template-columns:1fr 70px 1fr}.v18-mirror-side{height:88px;font-size:25px}.v18-compare-controls{grid-template-columns:1fr}.v18-example{grid-template-columns:40px 1fr;padding:15px}.v18-example-no{width:36px;height:36px;border-radius:12px}.v18-slide-footer{display:block}.v18-slide-footer button{width:100%;margin-top:13px}.v18-question-page,.v18-result{padding:16px;border-radius:22px}.v18-q-head{display:block}.v18-score-pill{display:inline-block;margin-top:12px}.v18-options{grid-template-columns:1fr}.v18-q-actions{position:sticky;bottom:74px;background:rgba(255,255,255,.95);padding:10px 0;z-index:5;backdrop-filter:blur(10px)}.v18-q-actions>span{display:none}.v18-q-actions button{padding:11px 12px;font-size:13px}.v18-result-hero{grid-template-columns:1fr;text-align:center}.v18-result-ring{margin:auto}.v18-result-actions{display:grid}.v18-result-actions button{width:100%}.v18-mastery-status>div{width:100%;margin:0}.v18-section-title{display:block}.v18-section-title small{display:block;margin-top:7px}.v18-axis-svg{min-width:620px}.v18-demo{overflow-x:auto}.v18-demo .v18-range{min-width:300px}}