:root{
  --bg:#f6f6fb;--card:#fff;--ink:#191a22;--muted:#747887;--line:#e8e9f1;
  --primary:#6d5efc;--primary-dark:#5042df;--lav:#efedff;--pink:#ffeff4;--blue:#eaf5ff;
  --mint:#e9fbf4;--yellow:#fff6d9;--danger:#ed5f70;--success:#20a46b;--shadow:0 18px 55px rgba(40,34,87,.10);
  --radius:24px;
}
*{box-sizing:border-box}html,body{margin:0;min-height:100%;font-family:Inter,ui-rounded,"SF Pro Rounded","Segoe UI",system-ui,sans-serif;background:var(--bg);color:var(--ink)}
button,input,textarea,select{font:inherit}button{cursor:pointer}.hidden{display:none!important}
.app-shell{min-height:100vh}.sidebar{position:fixed;inset:0 auto 0 0;width:248px;background:#fff;border-right:1px solid var(--line);padding:24px 16px;display:flex;flex-direction:column;z-index:20}
.brand,.mobile-logo{border:0;background:transparent;display:flex;align-items:center;gap:11px;text-align:left;color:var(--ink)}
.brand-mark{width:40px;height:40px;border-radius:14px;background:linear-gradient(145deg,#796cff,#5545ed);color:#fff;display:grid;place-items:center;font-weight:900;font-size:21px;box-shadow:0 9px 20px rgba(109,94,252,.24)}
.brand b{font-size:18px;letter-spacing:.4px}.brand small{display:block;color:var(--muted);margin-top:2px;font-size:11px}
.side-nav{display:flex;flex-direction:column;gap:6px;margin-top:32px}.nav-btn{border:0;background:transparent;text-align:left;border-radius:15px;padding:12px 14px;color:#5f6371;display:flex;gap:12px;align-items:center;font-weight:700}.nav-btn span{font-size:20px;width:24px;text-align:center}.nav-btn:hover,.nav-btn.active{background:var(--lav);color:var(--primary-dark)}
.side-bottom{margin-top:auto;display:grid;gap:10px}.mini-plan{border:0;background:linear-gradient(135deg,#f0edff,#fff0f5);border-radius:18px;padding:12px;display:flex;align-items:center;gap:10px;text-align:left}.mini-plan span{font-size:22px}.mini-plan small{display:block;color:var(--muted);font-size:11px;margin-top:2px}.profile-chip{border:1px solid var(--line);background:white;border-radius:18px;padding:9px;display:flex;align-items:center;gap:10px;text-align:left}.avatar{width:36px;height:36px;border-radius:12px;background:var(--yellow);display:grid;place-items:center;font-weight:900}.profile-copy{min-width:0}.profile-copy b,.profile-copy small{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.profile-copy small{font-size:11px;color:var(--muted);margin-top:2px}
.main{margin-left:248px;min-height:100vh}.topbar{height:68px;display:flex;justify-content:flex-end;align-items:center;padding:0 32px;position:sticky;top:0;background:rgba(246,246,251,.82);backdrop-filter:blur(18px);z-index:15;border-bottom:1px solid rgba(232,233,241,.7)}.mobile-logo{display:none}.top-actions{display:flex;gap:9px}.icon-btn,.pill-btn{border:1px solid var(--line);background:#fff;border-radius:13px;height:40px;padding:0 13px}.pill-btn{font-weight:800;color:var(--primary-dark)}
.view{max-width:1200px;margin:0 auto;padding:28px 34px 72px}.page-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px}.page-head h1{font-size:32px;line-height:1.05;margin:0 0 6px}.page-head p{margin:0;color:var(--muted)}
.hero{background:linear-gradient(125deg,#e9e7ff,#fceef5 52%,#e7f8ff);border-radius:32px;padding:30px;display:grid;grid-template-columns:1.2fr .8fr;gap:24px;overflow:hidden;position:relative;box-shadow:var(--shadow)}.hero:after{content:"";position:absolute;width:200px;height:200px;border-radius:50%;background:rgba(255,255,255,.35);right:-60px;top:-60px}.hero h1{font-size:42px;line-height:1.03;margin:0 0 13px;max-width:650px}.hero p{font-size:17px;color:#565b69;max-width:620px;line-height:1.5}.hero-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}.btn{border:0;border-radius:15px;padding:13px 18px;font-weight:850;transition:.18s transform,.18s box-shadow}.btn:hover{transform:translateY(-1px)}.btn.primary{background:var(--primary);color:#fff;box-shadow:0 10px 20px rgba(109,94,252,.23)}.btn.secondary{background:#fff;color:var(--ink);border:1px solid var(--line)}.btn.ghost{background:var(--lav);color:var(--primary-dark)}.btn.danger{background:#fff0f1;color:#c44355}.btn.small{padding:9px 12px;border-radius:12px;font-size:13px}.btn.block{width:100%}.hero-mascot{display:grid;place-items:center;position:relative;z-index:2}.mascot-card{width:260px;height:210px;border-radius:36px;background:#fff9;backdrop-filter:blur(4px);display:grid;place-items:center;transform:rotate(3deg);box-shadow:0 18px 45px rgba(75,68,129,.14)}.cat-face{font-size:100px;filter:drop-shadow(0 10px 7px rgba(60,53,92,.12))}.bubble{position:absolute;top:8px;right:6px;background:white;border-radius:18px 18px 18px 5px;padding:10px 12px;font-weight:800;font-size:13px;box-shadow:0 10px 25px #6d5efc22}.bubble b{color:var(--primary)}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:20px 0 30px}.stat{background:#fff;border:1px solid var(--line);border-radius:20px;padding:16px}.stat .k{font-size:28px;font-weight:900}.stat .label{font-size:12px;color:var(--muted);margin-top:4px}.stat:nth-child(1){background:var(--lav)}.stat:nth-child(2){background:var(--yellow)}.stat:nth-child(3){background:var(--mint)}.stat:nth-child(4){background:var(--pink)}
.section{margin:28px 0}.section-row{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}.section-row h2{margin:0;font-size:22px}.section-row button{border:0;background:transparent;color:var(--primary-dark);font-weight:800}.lesson-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.lesson-card{background:#fff;border:1px solid var(--line);border-radius:24px;overflow:hidden;transition:.2s transform,.2s box-shadow;position:relative}.lesson-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.lesson-cover{height:170px;background:linear-gradient(145deg,#f0efff,#e7f7ff);position:relative;overflow:hidden}.lesson-cover img{width:100%;height:100%;object-fit:cover}.lesson-cover.noimg{display:grid;place-items:center;font-size:70px}.lesson-badge{position:absolute;top:12px;left:12px;background:rgba(255,255,255,.92);backdrop-filter:blur(5px);padding:7px 10px;border-radius:11px;font-weight:850;font-size:11px}.fav-btn{position:absolute;top:12px;right:12px;border:0;background:rgba(255,255,255,.92);width:34px;height:34px;border-radius:12px;font-size:16px}.lesson-body{padding:16px}.lesson-body h3{font-size:17px;line-height:1.25;margin:0 0 8px}.lesson-body p{color:var(--muted);font-size:13px;line-height:1.45;margin:0 0 14px;min-height:38px}.lesson-meta{display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:12px}.progress-track{height:7px;background:#eeeefa;border-radius:99px;overflow:hidden;margin-top:13px}.progress-track i{display:block;height:100%;background:linear-gradient(90deg,#786bff,#9c8cff);border-radius:inherit}.continue-strip{background:#fff;border:1px solid var(--line);padding:16px;border-radius:22px;display:flex;align-items:center;gap:14px}.continue-icon{width:52px;height:52px;border-radius:16px;background:var(--lav);display:grid;place-items:center;font-size:26px}.continue-strip .grow{flex:1}.continue-strip h3{margin:0 0 4px;font-size:16px}.continue-strip p{margin:0;color:var(--muted);font-size:12px}
.catalog-tools{display:flex;gap:10px;flex-wrap:wrap;margin:12px 0 18px}.input,.select,.textarea{width:100%;border:1px solid var(--line);background:#fff;border-radius:14px;padding:12px 13px;outline:0}.input:focus,.select:focus,.textarea:focus{border-color:#b7b0ff;box-shadow:0 0 0 3px #6d5efc13}.search{max-width:440px}.select{width:auto}.chip-row{display:flex;gap:7px;flex-wrap:wrap}.chip{border:1px solid var(--line);background:#fff;border-radius:999px;padding:8px 12px;font-weight:750;font-size:12px}.chip.active{background:var(--lav);border-color:#dad4ff;color:var(--primary-dark)}
.empty{background:#fff;border:1px dashed #d8dae6;border-radius:24px;padding:40px;text-align:center;color:var(--muted)}.empty .big{font-size:46px;display:block;margin-bottom:8px}
.scanner{display:grid;grid-template-columns:1fr 1fr;gap:20px}.scan-box{background:#fff;border:1px solid var(--line);border-radius:28px;padding:22px}.camera-zone{border:2px dashed #cbc9e7;border-radius:22px;min-height:320px;display:grid;place-items:center;text-align:center;background:linear-gradient(180deg,#fbfbff,#f4f5fb);padding:20px;overflow:hidden}.camera-zone.drag{border-color:var(--primary);background:var(--lav)}.camera-zone img{max-width:100%;max-height:310px;border-radius:16px}.camera-icon{font-size:52px}.scan-result{background:linear-gradient(160deg,#eff7ff,#fff);border:1px solid #dceaf6;border-radius:22px;padding:18px;white-space:pre-wrap;line-height:1.55;min-height:150px}.scan-result strong{color:var(--primary-dark)}
.review-list{display:grid;gap:12px}.review-item{background:#fff;border:1px solid var(--line);border-radius:20px;padding:16px;display:flex;gap:14px;align-items:flex-start}.review-mark{width:38px;height:38px;flex:0 0 38px;border-radius:13px;background:#fff0f2;color:#d44a5e;display:grid;place-items:center;font-weight:900}.review-item h3{margin:0 0 5px;font-size:15px}.review-item p{margin:0;color:var(--muted);font-size:13px;line-height:1.4}.review-item .btn{margin-left:auto}
.teacher-summary{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px;margin-bottom:18px}.summary-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:18px}.summary-card b{font-size:28px}.summary-card span{display:block;font-size:12px;color:var(--muted);margin-top:4px}.teacher-layout{display:grid;grid-template-columns:1.3fr .7fr;gap:18px}.panel{background:#fff;border:1px solid var(--line);border-radius:24px;padding:18px}.panel h2,.panel h3{margin:0}.table-wrap{overflow:auto}.data-table{width:100%;border-collapse:collapse;margin-top:12px;min-width:560px}.data-table th,.data-table td{text-align:left;padding:12px 9px;border-bottom:1px solid var(--line);font-size:13px}.data-table th{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}.score-pill{display:inline-block;padding:5px 8px;border-radius:9px;background:var(--mint);font-weight:850}.bad-pill{background:#fff0f2;color:#c64759}.class-card{padding:13px;border:1px solid var(--line);border-radius:16px;margin-top:10px}.class-code{font-family:ui-monospace,monospace;background:var(--lav);color:var(--primary-dark);padding:5px 7px;border-radius:8px;font-weight:900}.assignment{display:flex;justify-content:space-between;gap:10px;padding:10px 0;border-bottom:1px solid var(--line);font-size:13px}
.creator-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:18px}.form-stack{display:grid;gap:11px}.form-label{font-size:12px;font-weight:850;color:#5c606e;margin-bottom:5px;display:block}.draft-preview{background:#fff;border:1px solid var(--line);border-radius:24px;padding:18px;min-height:400px}.draft-step{border:1px solid var(--line);border-radius:16px;padding:13px;margin-top:9px}.draft-step small{color:var(--primary-dark);font-weight:900;text-transform:uppercase}.draft-step h4{margin:5px 0}.draft-step p{margin:0;color:var(--muted);font-size:13px;line-height:1.45}.code-editor{width:100%;min-height:330px;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:12px;line-height:1.5;border:1px solid var(--line);border-radius:16px;padding:14px;background:#191b22;color:#e9ebf6}
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.price-card{background:#fff;border:1px solid var(--line);border-radius:25px;padding:22px}.price-card.featured{border:2px solid var(--primary);box-shadow:var(--shadow);position:relative}.price-card.featured:before{content:"выбор";position:absolute;right:14px;top:14px;background:var(--primary);color:#fff;border-radius:9px;padding:5px 8px;font-size:10px;font-weight:900}.price-card h3{margin:0}.price{font-size:34px;font-weight:950;margin:13px 0}.price small{font-size:12px;color:var(--muted);font-weight:600}.features{list-style:none;padding:0;margin:14px 0 20px;display:grid;gap:9px}.features li:before{content:"✓";color:var(--success);font-weight:900;margin-right:8px}
.profile-page{max-width:620px}.profile-card{background:#fff;border:1px solid var(--line);border-radius:28px;padding:24px}.big-avatar{width:72px;height:72px;border-radius:22px;background:var(--yellow);display:grid;place-items:center;font-size:32px;font-weight:900;margin-bottom:14px}.profile-card h2{margin:0}.profile-card p{color:var(--muted);margin:5px 0 18px}.profile-actions{display:grid;gap:9px}
.modal-root{position:fixed;inset:0;background:rgba(22,22,33,.44);backdrop-filter:blur(6px);z-index:100;display:grid;place-items:center;padding:18px}.modal-card{width:min(560px,100%);max-height:90vh;overflow:auto;background:#fff;border-radius:28px;box-shadow:0 30px 90px rgba(24,23,54,.25);padding:22px}.modal-head{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:15px}.modal-head h2{margin:0}.close{border:0;background:#f1f1f7;width:36px;height:36px;border-radius:12px;font-size:18px}.tabs{display:flex;background:#f4f4fa;border-radius:14px;padding:4px;margin-bottom:15px}.tab{flex:1;border:0;background:transparent;border-radius:10px;padding:9px;font-weight:800;color:var(--muted)}.tab.active{background:white;color:var(--ink);box-shadow:0 4px 12px #2221}.demo-row{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin-top:12px}.fine{font-size:11px;color:var(--muted);line-height:1.4}
.lesson-modal{position:fixed;inset:0;background:#f6f6fb;z-index:120;overflow:auto}.lesson-top{height:64px;display:flex;align-items:center;gap:12px;padding:0 max(18px,calc((100vw - 860px)/2));position:sticky;top:0;background:rgba(246,246,251,.93);backdrop-filter:blur(16px);z-index:4}.lesson-top .close{flex:0 0 auto}.lesson-progress{flex:1;height:9px;background:#e9e9f2;border-radius:99px;overflow:hidden}.lesson-progress i{display:block;height:100%;background:linear-gradient(90deg,#6859fa,#978dff);border-radius:inherit;transition:.25s width}.lesson-count{font-size:12px;color:var(--muted);font-weight:800;min-width:45px;text-align:right}.lesson-stage{max-width:760px;margin:0 auto;padding:28px 18px 90px}.step-card{background:#fff;border:1px solid var(--line);border-radius:30px;padding:28px;box-shadow:var(--shadow);min-height:480px;display:flex;flex-direction:column}.step-kicker{color:var(--primary-dark);font-size:12px;font-weight:900;text-transform:uppercase;letter-spacing:.06em}.step-card h1{font-size:31px;line-height:1.08;margin:8px 0 14px}.step-card .lead{font-size:17px;line-height:1.6;color:#4e5260}.step-emoji{font-size:82px;text-align:center;margin:25px 0 5px}.step-image{width:100%;border-radius:20px;border:1px solid var(--line);margin:8px 0 14px}.lesson-controls{margin-top:auto;display:flex;justify-content:space-between;gap:10px;padding-top:18px}.understand-row{display:flex;gap:9px;flex-wrap:wrap;margin-top:13px}.speak-btn,.dont-get{border:0;border-radius:13px;padding:10px 12px;font-weight:800}.speak-btn{background:var(--blue)}.dont-get{background:var(--pink);color:#b64658}.options{display:grid;gap:10px;margin:18px 0}.option{border:2px solid var(--line);background:#fff;border-radius:16px;padding:14px;text-align:left;font-weight:750;transition:.14s}.option:hover{border-color:#c9c4ff}.option.selected{border-color:var(--primary);background:var(--lav)}.option.correct{border-color:#77d8ad;background:#ebfbf3}.option.wrong{border-color:#f2a0aa;background:#fff0f2}.feedback{border-radius:16px;padding:13px 14px;margin:4px 0 9px;line-height:1.45;font-size:14px}.feedback.ok{background:var(--mint);color:#176b4a}.feedback.no{background:#fff0f2;color:#a43e4d}.simple-sheet{margin-top:16px;background:linear-gradient(145deg,#fff7da,#fff);border:1px solid #f5e8b6;border-radius:18px;padding:15px}.simple-sheet b{display:block;margin-bottom:5px}.finish-badge{font-size:80px;text-align:center;margin:20px}.finish-score{text-align:center;font-size:48px;font-weight:950;color:var(--primary-dark)}
.toast{position:fixed;right:24px;bottom:24px;background:#1f2027;color:white;padding:12px 15px;border-radius:14px;box-shadow:var(--shadow);z-index:300;opacity:0;transform:translateY(10px);pointer-events:none;transition:.2s}.toast.show{opacity:1;transform:translateY(0)}
.bottom-nav{display:none}
@media(max-width:980px){.lesson-grid{grid-template-columns:repeat(2,1fr)}.hero{grid-template-columns:1fr}.hero-mascot{display:none}.teacher-layout,.creator-grid,.scanner{grid-template-columns:1fr}.price-grid{grid-template-columns:1fr}.teacher-summary{grid-template-columns:repeat(3,1fr)}}
@media(max-width:760px){.sidebar{display:none}.main{margin-left:0}.topbar{height:58px;padding:0 14px;justify-content:space-between}.mobile-logo{display:flex}.mobile-logo .brand-mark{width:33px;height:33px;border-radius:11px;font-size:17px}.view{padding:18px 14px 92px}.page-head h1{font-size:27px}.hero{padding:22px;border-radius:25px}.hero h1{font-size:33px}.hero p{font-size:15px}.stats{grid-template-columns:repeat(2,1fr);gap:9px}.lesson-grid{grid-template-columns:1fr}.lesson-cover{height:190px}.bottom-nav{position:fixed;display:flex;bottom:0;left:0;right:0;height:70px;background:rgba(255,255,255,.95);backdrop-filter:blur(16px);border-top:1px solid var(--line);z-index:50;justify-content:space-around;padding:6px 6px env(safe-area-inset-bottom)}.bottom-btn{border:0;background:transparent;min-width:58px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;color:#7a7d88}.bottom-btn span{font-size:20px}.bottom-btn small{font-size:10px;font-weight:800}.bottom-btn.active{color:var(--primary-dark)}.scan-main span{width:39px;height:39px;background:var(--primary);color:#fff;border-radius:14px;display:grid;place-items:center;margin-top:-18px;box-shadow:0 10px 20px #6d5efc44}.scan-main small{margin-top:1px}.teacher-summary{grid-template-columns:1fr 1fr}.teacher-summary .summary-card:last-child{grid-column:1/-1}.modal-root{padding:0;align-items:end}.modal-card{width:100%;border-radius:28px 28px 0 0;max-height:92vh}.lesson-top{padding:0 14px}.lesson-stage{padding:16px 12px 90px}.step-card{border-radius:23px;padding:20px;min-height:calc(100vh - 160px)}.step-card h1{font-size:26px}.step-card .lead{font-size:16px}.step-image{max-height:47vh;object-fit:contain}.continue-strip{align-items:flex-start;flex-wrap:wrap}.continue-strip .btn{width:100%}}

/* Admin / updates */
.version-pill{display:inline-flex;align-items:center;justify-content:center;background:var(--lav);color:var(--primary-dark);border:1px solid #d9d4ff;border-radius:999px;padding:8px 12px;font-size:12px;font-weight:900;white-space:nowrap}
.admin-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-bottom:18px}.admin-panel{min-width:0}.admin-panel-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:16px}.admin-panel-head h2{margin:0 0 5px}.admin-panel-head p{margin:0;color:var(--muted);font-size:13px;line-height:1.45}.status-dot{display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:6px 9px;font-size:10px;font-weight:900;white-space:nowrap}.status-dot:before{content:"";width:7px;height:7px;border-radius:50%;background:currentColor}.status-dot.ok{background:#e9faf2;color:#18865b}.status-dot.off{background:#f2f2f6;color:#777b86}.secret-row{display:grid;grid-template-columns:1fr auto;gap:8px}.secret-row .btn{min-width:100px}.update-panel{margin-bottom:24px}.update-drop{border:2px dashed #d8d8e5;border-radius:22px;background:linear-gradient(180deg,#fcfcff,#f6f6fb);padding:28px;text-align:center;transition:.18s}.update-drop.drag{border-color:var(--primary);background:var(--lav)}.update-drop h3{margin:8px 0 5px}.update-drop p{margin:0 0 14px;color:var(--muted);font-size:13px}.update-icon{font-size:38px}.update-file-info{margin-top:12px;border:1px solid var(--line);border-radius:16px;padding:13px 14px;display:flex;align-items:center;justify-content:space-between;gap:12px;background:#fff}.update-file-info>div:first-child{display:grid;gap:3px}.update-file-info small{color:var(--muted)}.update-version{display:flex;align-items:center;gap:8px;font-size:12px}.update-version span{color:var(--muted)}.update-version b{color:var(--primary-dark)}.update-options{display:flex;gap:18px;flex-wrap:wrap;margin:14px 0;font-size:12px;color:#555967}.update-options label{display:flex;align-items:center;gap:7px}.update-progress{position:relative;height:38px;border-radius:13px;background:#ececf3;overflow:hidden;margin:12px 0}.update-progress i{position:absolute;inset:0 auto 0 0;width:0;background:linear-gradient(90deg,#6d5efc,#9a90ff);transition:.2s width}.update-progress span{position:relative;z-index:1;height:100%;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:900;color:#30313a}.update-success,.update-error{border-radius:16px;padding:13px 14px;margin-top:12px}.update-success{background:#e9faf2;color:#176b4a}.update-error{background:#fff0f2;color:#a43e4d}.update-success p,.update-error p{margin:4px 0 0;font-size:12px;line-height:1.4}.demo-admin{grid-column:1/-1}
@media(max-width:980px){.admin-grid{grid-template-columns:1fr}}
@media(max-width:760px){.admin-panel-head{flex-direction:column}.secret-row{grid-template-columns:1fr}.secret-row .btn{width:100%}.update-file-info{align-items:flex-start;flex-direction:column}.update-version{width:100%;justify-content:space-between}.update-options{display:grid;gap:10px}}

/* Physics 7 / Elina methodology v1.2 */
.physics-hero{background:linear-gradient(135deg,#f6f3ff 0%,#f9fbff 50%,#fff8df 100%)}
.hero-promise{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}.hero-promise span{background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 10px;font-size:11px;font-weight:800;color:#555967}.mascot-card.quantum{position:relative}.mascot-name{font-size:13px;font-weight:950;text-align:center;margin:5px 0;color:var(--primary-dark)}
.method-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.method-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:18px}.method-card b{color:var(--primary-dark);font-size:16px}.method-card p{margin:8px 0 0;color:var(--muted);line-height:1.45;font-size:13px}.bridge-banner{display:flex;gap:18px;align-items:center;background:linear-gradient(135deg,#eefcf6,#eef7ff);border:1px solid #d7eee8;border-radius:24px;padding:22px}.bridge-banner h2{margin:0 0 6px}.bridge-banner p{margin:0;color:#555967;line-height:1.55}.bridge-icon{font-size:42px;white-space:nowrap}
.course-head{display:grid;grid-template-columns:1fr 210px;gap:22px;align-items:center;background:linear-gradient(135deg,#fff,#f3f0ff);border:1px solid var(--line);border-radius:28px;padding:26px;margin-bottom:16px}.course-head h1{font-size:36px;line-height:1.08;margin:8px 0 12px}.course-head p{color:#5e6270;line-height:1.6;margin:0}.course-mascot{background:#fff;border:1px solid var(--line);border-radius:22px;padding:18px;text-align:center;display:grid;gap:5px}.course-mascot span{font-size:62px}.course-mascot b{font-size:18px}.course-mascot small{color:var(--muted);line-height:1.35}.principle-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:9px;margin:0 0 18px}.principle-strip span{background:#fff;border:1px solid var(--line);border-radius:16px;padding:11px;font-size:12px;font-weight:750;display:flex;align-items:center;gap:8px}.principle-strip b{width:24px;height:24px;border-radius:8px;background:var(--lav);color:var(--primary-dark);display:grid;place-items:center;flex:0 0 auto}.course-modules{display:grid;gap:16px}.course-module,.methodist-module{background:#fff;border:1px solid var(--line);border-radius:25px;padding:20px}.module-head{display:flex;align-items:center;gap:14px;margin-bottom:14px}.module-head.compact{margin-bottom:12px}.module-head h2{margin:2px 0 4px}.module-head p{margin:0;color:var(--muted);font-size:13px}.module-head small{color:var(--primary-dark);font-weight:850}.module-emoji{width:52px;height:52px;border-radius:17px;background:var(--lav);display:grid;place-items:center;font-size:26px;flex:0 0 auto}.module-count{margin-left:auto;text-align:center;font-size:20px;font-weight:950;background:#f7f7fb;border-radius:14px;padding:8px 12px}.module-count small{display:block;font-size:9px;color:var(--muted);font-weight:700}.topic-list{display:grid;gap:7px}.topic-row{display:flex;gap:10px;align-items:center;border-radius:15px;padding:11px 12px;background:#f8f8fb;border:1px solid transparent}.topic-row.ready{background:#f4fbf7;border-color:#dbf1e6}.topic-status{width:25px;height:25px;border-radius:9px;display:grid;place-items:center;background:#ececf4;color:#8b8d98;font-weight:950;flex:0 0 auto}.topic-row.ready .topic-status{background:#dff7eb;color:#167d55}.topic-row b{font-size:13px}.topic-row small{display:block;color:var(--muted);margin-top:2px}.planned-label{font-size:10px;color:#999ca7;background:#fff;border:1px solid var(--line);border-radius:999px;padding:5px 8px}.course-next{background:#fff8e8;border:1px solid #f2e7c6;border-radius:22px;padding:20px}.course-next p{line-height:1.6;color:#595c67}
.prediction-note{background:#fff8db;color:#755d11;border-radius:14px;padding:10px 12px;font-size:12px;font-weight:750;margin:10px 0}.special-step{display:grid;grid-template-columns:56px 1fr;gap:16px;align-items:flex-start;border-radius:22px;padding:18px;margin-top:10px}.special-step h1{margin-top:0}.special-icon{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;font-size:28px;background:#fff}.experiment-step{background:#eef9ff;border:1px solid #d6edf8}.chem-step{background:#effaf4;border:1px solid #d6eee0}.curiosity-step{background:#fff8e7;border:1px solid #f2e3b8}.optional-tag,.safety{margin-top:12px;border-radius:12px;padding:9px 10px;font-size:11px;font-weight:800}.optional-tag{background:#ffffffaa;color:#6c6875}.safety{background:#fff1e9;color:#a45128}.sim-placeholder,.distance-sim,.brownian-sim,.scale-sim,.speed-sim,.spring-sim,.particle-states{margin:20px 0;border:1px solid var(--line);background:#f8f8fc;border-radius:22px;padding:18px}.particle-states{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.state-box{background:#fff;border:1px solid var(--line);border-radius:17px;padding:12px;text-align:center}.state-box b{display:block;margin-bottom:8px}.state-box small{font-size:9px;color:var(--muted)}.particle-field{height:105px;position:relative;background:#fafaff;border-radius:12px;overflow:hidden}.particle-field i{position:absolute;width:10px;height:10px;background:#6d5efc;border-radius:50%}.solid .particle-field{display:grid;grid-template-columns:repeat(4,10px);grid-auto-rows:10px;align-content:center;justify-content:center;gap:8px}.solid .particle-field i{position:static;animation:solidJiggle 1.2s infinite alternate}.liquid .particle-field i,.gas .particle-field i{animation:particleFloat calc(2.2s + var(--n,0)*.1s) infinite alternate ease-in-out}.liquid .particle-field i:nth-child(1){left:15%;top:58%}.liquid .particle-field i:nth-child(2){left:28%;top:45%}.liquid .particle-field i:nth-child(3){left:43%;top:62%}.liquid .particle-field i:nth-child(4){left:58%;top:43%}.liquid .particle-field i:nth-child(5){left:70%;top:60%}.liquid .particle-field i:nth-child(6){left:20%;top:75%}.liquid .particle-field i:nth-child(7){left:37%;top:79%}.liquid .particle-field i:nth-child(8){left:55%;top:76%}.liquid .particle-field i:nth-child(9){left:72%;top:78%}.liquid .particle-field i:nth-child(n+10){left:calc(8% * (var(--i, 5)));top:55%}.gas .particle-field i:nth-child(1){left:8%;top:12%}.gas .particle-field i:nth-child(2){left:45%;top:8%}.gas .particle-field i:nth-child(3){right:8%;top:22%}.gas .particle-field i:nth-child(4){left:23%;top:45%}.gas .particle-field i:nth-child(5){left:62%;top:42%}.gas .particle-field i:nth-child(6){left:10%;bottom:12%}.gas .particle-field i:nth-child(7){left:43%;bottom:8%}.gas .particle-field i:nth-child(8){right:10%;bottom:15%}.gas .particle-field i:nth-child(9){left:70%;top:8%}.gas .particle-field i:nth-child(10){left:35%;top:28%}@keyframes solidJiggle{to{transform:translate(1px,-1px)}}@keyframes particleFloat{to{transform:translate(8px,-10px)}}
.molecule-scene{height:120px;display:flex;align-items:center;justify-content:center;gap:60px;position:relative}.mol{font-size:48px;transition:.15s transform}.force-label{position:absolute;top:8px;font-size:12px;font-weight:900;color:#7359db}.force-label.repel{color:#d55062}.force-label.weak{color:#8f929b}.range{width:100%;accent-color:var(--primary)}.range-labels{display:flex;justify-content:space-between;font-size:9px;color:var(--muted);margin-top:6px}.brownian-sim{height:190px;position:relative;overflow:hidden;background:radial-gradient(circle at 50% 50%,#fff,#f3f0ff)}.brownian-big{position:absolute;width:34px;height:34px;border-radius:50%;background:#e86666;left:48%;top:45%;box-shadow:0 4px 12px #e8666644;animation:brownianBig 2s infinite alternate ease-in-out}.brownian-sim i{position:absolute;width:7px;height:7px;border-radius:50%;background:#6d5efc;left:calc((var(--i) * 37) % 92 * 1%);top:calc((var(--i) * 53) % 85 * 1%);animation:particleFloat calc(1.1s + (var(--i) % 7)*.13s) infinite alternate}@keyframes brownianBig{0%{transform:translate(-5px,3px)}30%{transform:translate(8px,-4px)}70%{transform:translate(-2px,-10px)}100%{transform:translate(10px,5px)}}.scale-sim{display:flex;justify-content:center;align-items:center;gap:13px}.scale-sim div{min-width:90px;height:90px;border-radius:18px;background:#fff;display:grid;place-items:center;font-size:26px}.scale-sim b{display:block;font-size:10px;color:var(--muted)}.micro-dots{letter-spacing:3px}.speed-sim{display:grid;gap:16px}.speed-sim>div{display:grid;grid-template-columns:35px 1fr 90px;align-items:center;gap:8px}.speed-sim i{height:9px;background:linear-gradient(90deg,var(--primary),#aaa1ff);border-radius:99px}.speed-sim b{font-size:11px}.speed-sim small{color:var(--muted)}.spring-sim{text-align:center;min-height:190px}.spring{width:35px;height:100px;margin:0 auto;border-left:5px double #706b84;border-right:5px double #706b84;transform:skewY(-25deg);background:repeating-linear-gradient(to bottom,transparent 0 10px,#706b84 11px 13px,transparent 14px 20px)}.weight{font-size:34px;margin-top:-2px}.spring-note{font-size:11px;color:var(--muted);margin-top:8px}
.methodist-guide{display:flex;gap:8px;flex-wrap:wrap;background:#f6f3ff;border:1px solid #e1dcff;border-radius:18px;padding:13px;margin-bottom:16px;font-size:11px}.methodist-guide b{color:var(--primary-dark)}.methodist-guide span{background:#fff;border-radius:999px;padding:4px 8px}.methodist-list{display:grid;gap:16px}.methodist-topic{border-top:1px solid var(--line);padding:16px 0}.methodist-topic:first-of-type{border-top:0}.methodist-title{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:12px}.methodist-title b{font-size:14px}.methodist-title small{display:block;color:var(--muted);margin-top:2px}.methodist-title .select{width:auto;min-width:130px}.methodist-topic textarea.input{height:auto;resize:vertical;margin-bottom:10px;line-height:1.45}.methodist-actions{display:flex;justify-content:space-between;align-items:center}.methodist-actions small{color:var(--muted)}
@media(max-width:980px){.method-grid,.principle-strip{grid-template-columns:1fr 1fr}.course-head{grid-template-columns:1fr}.course-mascot{display:none}}
@media(max-width:760px){.method-grid,.principle-strip{grid-template-columns:1fr}.bridge-banner{align-items:flex-start}.bridge-icon{font-size:28px}.course-head{padding:20px}.course-head h1{font-size:29px}.module-head{align-items:flex-start}.module-count{display:none}.topic-row{align-items:flex-start}.particle-states{grid-template-columns:1fr}.particle-field{height:85px}.special-step{grid-template-columns:1fr}.special-icon{width:44px;height:44px}.methodist-title{align-items:flex-start;flex-direction:column}.methodist-title .select{width:100%}.scale-sim{gap:5px}.scale-sim div{min-width:70px;height:75px;font-size:21px}.speed-sim>div{grid-template-columns:30px 1fr 80px}}

/* ===== ПОНЯТНО 1.5 · Visual Course ===== */
.physics-hero.v15{background:linear-gradient(125deg,#ece9ff,#fff0f4 48%,#e6f8ff);min-height:360px}.physics-hero.v15 .hero-promise{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px}.physics-hero.v15 .hero-promise span{background:#ffffffa8;border:1px solid #ffffffbb;border-radius:999px;padding:7px 10px;font-size:11px;font-weight:800}.quantum-v15{height:280px;width:290px;background:#ffffffc2;transform:rotate(2deg)}.quantum-v15 img{width:210px;height:210px;object-fit:contain;filter:drop-shadow(0 16px 18px rgba(79,67,150,.14))}.quantum-v15 .mascot-name{position:absolute;left:20px;bottom:16px;font-weight:950;color:var(--primary-dark)}.quantum-v15 .bubble{top:12px;right:-8px;max-width:165px}.v15-stats .stat:nth-child(4){background:#edf8ff}
.daily-quest{display:grid;grid-template-columns:84px 1fr auto;align-items:center;gap:18px;background:linear-gradient(135deg,#20203a,#493e91);color:#fff;border-radius:26px;padding:18px 22px;margin:18px 0 24px;box-shadow:0 18px 45px rgba(40,34,87,.16)}.daily-quest h2{margin:3px 0 5px}.daily-quest p{margin:0 0 9px;color:#dedbf8;font-size:13px}.daily-quest small{color:#cfcaf2}.daily-quest .step-kicker{color:#bdb6ff}.daily-quant{width:72px;height:72px;border-radius:20px;background:#fff;display:grid;place-items:center}.daily-quant img{width:66px;height:66px}.daily-quest .xp-track{height:7px;background:#ffffff26;border-radius:99px;overflow:hidden;margin:8px 0 5px}.daily-quest .xp-track i{display:block;height:100%;background:#fff;border-radius:99px}.quant-notice{display:flex;align-items:center;gap:13px;background:#fff8dc;border:1px solid #f0df9c;border-radius:20px;padding:12px 14px;margin:0 0 20px}.quant-notice img{width:54px;height:54px}.quant-notice b{font-size:13px}.quant-notice p{margin:3px 0 0;color:#6d6451;font-size:12px}.around-preview{display:grid;grid-template-columns:1fr .8fr;align-items:center;gap:20px;background:linear-gradient(135deg,#e9fbf4,#eef7ff);border:1px solid #d6eee5;border-radius:26px;padding:24px}.around-preview h2{font-size:26px;margin:3px 0 8px}.around-preview p{color:#595e6b;line-height:1.55}.around-icons{font-size:42px;letter-spacing:10px;text-align:center;line-height:1.8}.achievement-row{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}.achievement{border:1px solid var(--line);background:#f5f5f8;border-radius:18px;padding:14px;text-align:center;opacity:.48;filter:grayscale(.8)}.achievement.unlocked{opacity:1;filter:none;background:linear-gradient(145deg,#fff9dd,#fff)}.achievement span,.achievement b,.achievement small{display:block}.achievement span{font-size:28px}.achievement b{font-size:11px;margin-top:5px}.achievement small{font-size:9px;color:var(--muted);margin-top:3px}.achievement-row.compact{grid-template-columns:repeat(5,1fr);margin:16px 0}.achievement-row.compact .achievement{padding:9px}.achievement-row.compact .achievement small{display:none}
.course-mascot img{width:105px;height:105px;margin:auto}.course-progress-big,.module-progress,.mini-progress{height:8px;background:#ececf5;border-radius:99px;overflow:hidden}.course-progress-big{margin:18px 0 6px;max-width:520px}.course-progress-big i,.module-progress i,.mini-progress i{display:block;height:100%;background:linear-gradient(90deg,#6d5efc,#a49cff);border-radius:inherit}.module-progress{height:5px;margin-top:8px;max-width:320px}.mini-progress{height:4px;margin-top:7px;max-width:240px}.v15-course .course-mascot{padding:12px 16px}.topic-row.ready .topic-status{font-size:12px}
.world-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.world-card{background:#fff;border:1px solid var(--line);border-radius:24px;padding:20px;position:relative;overflow:hidden;min-height:260px}.world-card:after{content:"";position:absolute;width:130px;height:130px;border-radius:50%;background:var(--lav);right:-50px;top:-45px;z-index:0}.world-card>*{position:relative;z-index:1}.world-emoji{font-size:48px}.world-concept{display:inline-block;margin:10px 0 8px;padding:5px 8px;border-radius:999px;background:var(--lav);color:var(--primary-dark);font-size:10px;font-weight:850}.world-card h2{margin:0 0 8px}.world-card p{font-size:13px;color:var(--muted);line-height:1.52;min-height:78px}.world-callout{display:grid;grid-template-columns:100px 1fr;align-items:center;gap:16px;background:#fff;border:1px solid var(--line);border-radius:24px;padding:18px}.world-callout img{width:92px;height:92px}.world-callout h2{margin:0 0 6px}.world-callout p{margin:0;color:#5e6270;line-height:1.55}
.method-status-row{display:flex;gap:8px;align-items:center}.quality-pill{border-radius:999px;padding:6px 9px;font-size:9px;font-weight:900;white-space:nowrap}.quality-pill.ok{background:#e2f8ed;color:#137a51}.quality-pill.warn{background:#fff1e7;color:#a6592b}.method-actions-right{display:flex;gap:7px}.methodist-topic{background:#fbfbfd;border:1px solid var(--line);border-radius:18px!important;padding:16px!important;margin-top:10px}.methodist-topic:first-of-type{border-top:1px solid var(--line)}
.coach-flow{display:flex;align-items:center;justify-content:center;gap:8px;flex-wrap:wrap;margin:-5px 0 20px}.coach-flow span{background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 10px;font-size:11px;font-weight:750}.coach-flow span b{display:inline-grid;place-items:center;width:20px;height:20px;border-radius:50%;background:var(--lav);color:var(--primary-dark);margin-right:4px}.coach-flow i{color:#a0a3ae}.coach-empty{display:flex;align-items:center;gap:12px}.coach-empty img{width:72px;height:72px}.coach-empty p{margin:0}.coach-topic,.coach-gap,.coach-explain,.coach-check{border-radius:16px;padding:12px 13px;margin-bottom:9px}.coach-topic{background:var(--lav)}.coach-gap{background:#fff6dd}.coach-explain{background:#ecf9f3}.coach-check{background:#eef7ff}.coach-topic small,.coach-gap small,.coach-explain small,.coach-check small{display:block;color:var(--muted);font-size:9px;font-weight:900;text-transform:uppercase;letter-spacing:.06em;margin-bottom:4px}.coach-topic b{font-size:16px}.coach-gap p,.coach-explain p{margin:0;line-height:1.5;font-size:13px}.coach-options{display:grid;gap:5px;margin-top:8px}.coach-options span{background:#fff;border:1px solid #dde6ef;border-radius:10px;padding:7px 9px;font-size:11px}.coach-options .answer-key{border-color:#b8dfcd;background:#f3fff8}.profile-game{display:grid;grid-template-columns:repeat(3,1fr);gap:9px;margin:16px 0}.profile-game>div{background:#f7f7fb;border-radius:15px;padding:12px;text-align:center}.profile-game b,.profile-game small{display:block}.profile-game b{font-size:18px}.profile-game small{font-size:9px;color:var(--muted);margin-top:2px}.profile-card .xp-track{height:8px;background:#eeeefa;border-radius:99px;overflow:hidden}.profile-card .xp-track i{display:block;height:100%;background:linear-gradient(90deg,#6d5efc,#a49cff)}
.visual-frame{margin-top:14px;border-radius:24px;background:linear-gradient(145deg,#fafaff,#f4f7fb);border:1px solid var(--line);padding:4px}.visual-frame>div{margin:0;border:0;background:transparent}.visual-caption{font-size:11px;color:var(--muted);background:#f7f7fb;border-radius:12px;padding:9px 10px;margin-top:8px}.formula-step{display:grid;grid-template-columns:72px 1fr;gap:18px;align-items:flex-start;background:linear-gradient(145deg,#f0edff,#fff);border:1px solid #ded9ff;border-radius:24px;padding:20px}.formula-step h1{margin:0 0 10px}.formula-icon{width:64px;height:64px;border-radius:19px;background:var(--primary);color:#fff;display:grid;place-items:center;font-size:34px;font-weight:900}.formula-text{font-size:18px;line-height:1.6;font-weight:750}.formula-rule{background:#fff8dd;border-radius:13px;padding:10px;font-size:11px;color:#6f6250}.finish-badge{width:130px;height:130px;margin:0 auto}.finish-badge img{width:100%;height:100%}
/* simulation primitives */
.particle-dot{width:54px;height:54px;border-radius:50%;background:radial-gradient(circle at 35% 30%,#fff,#7c70ff 40%,#5d4fe1 85%);box-shadow:0 8px 18px #6d5efc33;display:inline-block}.diffusion-sim{height:210px;position:relative;display:grid;grid-template-columns:1fr 1fr;overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:22px;padding:16px}.diffusion-sim>div:not(.mix-label){position:relative}.diffusion-sim i{position:absolute;width:9px;height:9px;border-radius:50%;animation:diffMix 4s infinite alternate ease-in-out}.diff-a i{background:#6d5efc}.diff-b i{background:#e76679}.diffusion-sim i:nth-child(1){left:8%;top:10%}.diffusion-sim i:nth-child(2){left:22%;top:30%}.diffusion-sim i:nth-child(3){left:15%;top:62%}.diffusion-sim i:nth-child(4){left:38%;top:18%}.diffusion-sim i:nth-child(5){left:40%;top:55%}.diffusion-sim i:nth-child(6){left:55%;top:72%}.diffusion-sim i:nth-child(7){left:62%;top:25%}.diffusion-sim i:nth-child(8){left:72%;top:52%}.diffusion-sim i:nth-child(n+9){left:82%;top:calc(7% * (var(--i,6)))}@keyframes diffMix{to{transform:translateX(110px) translateY(20px)}}.mix-label{position:absolute;bottom:12px;left:50%;transform:translateX(-50%);white-space:nowrap;font-size:10px;color:var(--muted);background:#fff;padding:5px 8px;border-radius:999px}.inertia-sim{height:210px;background:linear-gradient(#eaf7ff 0 68%,#d8dae1 68%);border-radius:22px;position:relative;overflow:hidden}.inertia-sim .bus{position:absolute;left:28%;bottom:43px;font-size:80px;color:#6d5efc;transition:.2s}.inertia-sim .bus span{font-size:18px;color:#fff}.person-dot{position:absolute;left:53%;bottom:90px;font-size:28px;color:#e75868}.brake-arrow{position:absolute;left:24%;top:24px;color:#d34d60;font-weight:900}.inertia-sim small{position:absolute;left:18px;right:18px;bottom:12px;background:#fff8;border-radius:10px;padding:6px;font-size:9px}.calc-sim{display:grid;gap:12px;margin:18px 0;background:#f8f8fc;border-radius:22px;padding:18px;border:1px solid var(--line)}.calc-visual{display:flex;gap:20px;justify-content:center}.cube{width:90px;height:90px;border-radius:18px;display:grid;place-items:center;font-weight:900}.cube.light{background:#e8f7ff;border:3px solid #8acbea}.cube.heavy{background:#eee9ff;border:8px solid #6d5efc}.calc-result{background:#fff;border-radius:14px;padding:12px;text-align:center;font-size:16px}.calc-result small{display:block;color:var(--muted);font-size:10px}.force-sim{height:230px;background:#f8f8fc;border-radius:22px;padding:20px;position:relative}.force-body{width:92px;height:62px;border-radius:20px;background:#ffe7a3;position:absolute;left:50%;top:70px;transform:translateX(-50%)}.f-arrow{position:absolute;top:88px;font-weight:900}.f-arrow.right{left:58%;color:#6d5efc}.f-arrow.left{right:58%;color:#d64d68}.force-sim .range{position:absolute;left:10%;right:10%;bottom:48px;width:80%}.force-sim small{position:absolute;bottom:14px;left:10%;right:10%;text-align:center}.friction-sim,.pressure-sim,.gas-sim,.depth-sim,.atmo-sim,.hydraulic-sim,.buoy-sim,.lever-sim,.eff-sim,.energy-sim,.measure-sim,.concept-sim,.pascal-sim,.communicating-sim{margin:18px 0;background:#f8f8fc;border:1px solid var(--line);border-radius:22px;padding:18px}.surface{height:100px;border-bottom:8px solid #7a7188;position:relative;background:repeating-linear-gradient(135deg,transparent 0 16px,#d7d4df 17px 19px)}.surface .block{position:absolute;left:35%;bottom:8px;font-size:46px;color:#f2b948}.friction-sim{display:grid;gap:9px}.friction-sim small{color:var(--muted)}.snow{height:125px;background:linear-gradient(#e8f7ff,#d6eef9);border-radius:18px;display:flex;align-items:flex-end;justify-content:center;padding-bottom:16px}.foot{height:34px;width:105px;background:#7e6f60;border-radius:50% 50% 35% 35%;box-shadow:0 12px 0 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#6d5efc}.piston.small{left:16%;width:70px;height:90px}.piston.big{right:14%;width:125px;height:130px}.fluid-line{position:absolute;left:23%;right:24%;bottom:50px;height:32px;background:#79d4bc;border-radius:0 0 14px 14px}.pascal-arrows{text-align:center;font-size:28px;color:#169c78;font-weight:900;margin-top:18px}.pascal-sim small{position:absolute;bottom:12px;left:12px;right:12px;text-align:center}.depth-sim{display:grid;gap:10px}.water-column{width:250px;height:180px;margin:auto;background:linear-gradient(#e9f8ff,#8ed4f2);border-radius:18px;position:relative;overflow:hidden}.diver{position:absolute;left:50%;top:45%;transform:translate(-50%,-50%);font-size:34px;color:#5e4ee1;transition:.2s top}.u-tube{height:150px;display:flex;gap:100px;justify-content:center;position:relative}.u-tube:after{content:"";position:absolute;bottom:5px;width:160px;height:75px;border:16px solid #6d5efc;border-top:0;border-radius:0 0 65px 65px}.u-tube i{width:18px;height:90px;background:#79d4bc;margin-top:45px;border-radius:8px}.atmo-sim{display:grid;gap:10px}.mountain{height:180px;background:linear-gradient(#dff4ff 0 55%,#9ec48b 55%);clip-path:polygon(0 100%,45% 10%,58% 55%,100% 100%);position:relative}.mountain span{position:absolute;left:48%;bottom:25%;color:#d94f73;font-size:24px;transition:.2s bottom}.hydraulic-sim{display:grid;grid-template-columns:90px 1fr 130px;gap:0;align-items:end;position:relative}.hyd-piston{background:white;border:5px solid #6d5efc;border-bottom:0;border-radius:15px 15px 0 0;text-align:center;font-size:26px;padding:18px 0}.hyd-piston.big{padding:30px 0}.hyd-fluid{height:38px;background:#79d4bc}.hydraulic-sim .range,.hydraulic-sim>b{grid-column:1/-1;margin-top:10px}.fluid{height:200px;background:linear-gradient(#eefcff 0 18%,#8cd7ee 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@media(max-width:980px){.achievement-row{grid-template-columns:repeat(3,1fr)}.world-grid{grid-template-columns:1fr 1fr}.daily-quest{grid-template-columns:70px 1fr}.daily-quest>.btn{grid-column:1/-1}.around-preview{grid-template-columns:1fr}.method-status-row{flex-wrap:wrap}.hydraulic-sim{grid-template-columns:70px 1fr 100px}}
@media(max-width:760px){.physics-hero.v15 .hero-mascot{display:none}.daily-quest{grid-template-columns:55px 1fr;padding:15px}.daily-quant{width:52px;height:52px}.daily-quant img{width:48px;height:48px}.achievement-row,.achievement-row.compact{grid-template-columns:1fr 1fr}.world-grid{grid-template-columns:1fr}.world-callout{grid-template-columns:70px 1fr}.world-callout img{width:64px;height:64px}.methodist-actions{align-items:flex-start;gap:8px}.method-actions-right{width:100%;display:grid;grid-template-columns:1fr 1fr}.formula-step{grid-template-columns:1fr}.formula-icon{width:48px;height:48px}.concept-sim{grid-template-columns:1fr}.concept-sim>i{transform:rotate(90deg);text-align:center}.around-icons{font-size:32px}.profile-game{grid-template-columns:1fr 1fr 1fr}.coach-flow i{display:none}.coach-flow span{font-size:9px}.energy-bars span{grid-template-columns:90px 1fr}.u-tube{gap:60px}.gas-box{min-width:45%}}