/* PC EDU v3 — brand and layout layer */
:root{--v3-blue:#2f91ff;--v3-cyan:#43d8ff;--v3-deep:#06111e;--v3-violet:#8d7dff;--v3-orange:#ff9b43}
body.v3-home{background:radial-gradient(circle at 82% 12%,rgba(47,145,255,.13),transparent 25%),radial-gradient(circle at 12% 42%,rgba(67,216,255,.07),transparent 30%),var(--bg);overflow-x:hidden}.page-glow{position:fixed;border-radius:50%;filter:blur(90px);pointer-events:none;opacity:.16;z-index:-1}.page-glow-a{width:520px;height:520px;background:var(--v3-blue);right:-260px;top:180px}.page-glow-b{width:420px;height:420px;background:var(--v3-violet);left:-280px;top:800px}
.v3-header{height:78px;max-width:none;padding-left:max(24px,calc((100vw - 1380px)/2));padding-right:max(24px,calc((100vw - 1380px)/2));background:color-mix(in srgb,var(--bg) 91%,transparent)}.brand-v3{gap:11px}.brand-seal{position:relative;width:44px;height:44px;border-radius:13px;display:grid;place-items:center;background:linear-gradient(145deg,#1d84e9,#48d7f9);box-shadow:0 9px 28px rgba(40,145,244,.28);overflow:hidden;color:white}.brand-seal:after{content:"";position:absolute;width:32px;height:32px;border:1px solid rgba(255,255,255,.26);border-radius:50%;right:-14px;bottom:-15px}.brand-seal strong{font-size:14px;letter-spacing:-.05em;z-index:2}.brand-seal i{position:absolute;width:19px;height:2px;background:rgba(255,255,255,.7);transform:rotate(-28deg);bottom:10px;right:5px}.brand-v3 b{font-size:15px;letter-spacing:.09em}.brand-v3 small{font-size:10px}.v3-nav{margin-left:auto;margin-right:6px;gap:25px}.v3-nav a{font-size:12px}.header-actions{display:flex;align-items:center;gap:9px}.cabinet-btn{padding:10px 15px!important;font-size:12px}.cabinet-btn span,.btn.big span{margin-left:8px}
.hero-v3{max-width:1380px;min-height:730px;padding:82px 24px 80px;grid-template-columns:1.04fr .96fr;gap:80px}.hero-badge{width:max-content;display:flex;align-items:center;gap:9px;padding:8px 12px;border:1px solid rgba(67,216,255,.15);background:rgba(67,216,255,.055);border-radius:999px;font-size:10px;font-weight:900;letter-spacing:.14em;color:var(--cyan)}.live-dot{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 0 5px rgba(98,231,168,.08)}.hero-v3 h1{font-size:clamp(58px,6.5vw,94px);max-width:800px;margin-top:22px}.hero-lead{font-size:17px!important;max-width:670px!important;line-height:1.72}.btn.big{padding:14px 20px;border-radius:13px}.trust-row{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:44px;max-width:650px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.trust-row>div{padding:18px 20px 18px 0;border-right:1px solid var(--line)}.trust-row>div:not(:first-child){padding-left:20px}.trust-row>div:last-child{border:0}.trust-row b{display:block;font-size:24px}.trust-row span{display:block;color:var(--muted);font-size:10px;margin-top:2px}
.hero-dashboard{height:550px}.grid-orbit{position:absolute;inset:3% 0;background-image:linear-gradient(rgba(82,155,219,.075) 1px,transparent 1px),linear-gradient(90deg,rgba(82,155,219,.075) 1px,transparent 1px);background-size:34px 34px;mask-image:radial-gradient(circle at center,black 25%,transparent 72%);transform:perspective(450px) rotateX(58deg) translateY(70px);opacity:.9}.visual-card{position:absolute;border:1px solid var(--line);background:linear-gradient(145deg,rgba(15,40,65,.96),rgba(6,18,31,.98));box-shadow:0 35px 80px rgba(0,0,0,.32);backdrop-filter:blur(18px)}[data-theme="light"] .visual-card{background:linear-gradient(145deg,rgba(255,255,255,.98),rgba(238,247,253,.98))}.visual-main{left:15px;right:40px;top:40px;bottom:72px;border-radius:26px;padding:27px;transform:rotate(1deg)}.visual-head{display:flex;justify-content:space-between;align-items:start}.visual-head span{display:block;color:var(--cyan);font-size:9px;font-weight:900;letter-spacing:.16em}.visual-head b{font-size:20px}.visual-head em{font-size:9px;font-style:normal;color:var(--muted);padding:7px 9px;border-radius:9px;border:1px solid var(--line)}.route-progress{display:flex;align-items:center;justify-content:space-between;padding:28px 0 22px}.route-progress strong{display:block;font-size:42px;line-height:1}.route-progress span{color:var(--muted);font-size:10px}.ring{--pct:0deg;width:74px;height:74px;border-radius:50%;background:conic-gradient(var(--cyan) var(--pct),rgba(255,255,255,.08) 0);display:grid;place-items:center}.ring:after{content:"";width:56px;height:56px;border-radius:50%;background:#0a2035}[data-theme="light"] .ring:after{background:#fff}.route-list{border-top:1px solid var(--line)}.route-list a{display:flex;gap:13px;align-items:center;padding:13px 0;border-bottom:1px solid var(--line);text-decoration:none;color:var(--text)}.route-list>a>span{width:31px;height:31px;border-radius:9px;display:grid;place-items:center;background:rgba(67,216,255,.08);color:var(--cyan);font:800 10px monospace}.route-list b,.route-list small{display:block}.route-list b{font-size:12px}.route-list small{font-size:9px;color:var(--muted);margin-top:2px}.terminal-mini{width:300px;right:-15px;bottom:24px;border-radius:16px;overflow:hidden;transform:rotate(-3deg)}.terminal-mini .terminal-top{height:38px}.terminal-mini pre{font:10px/1.6 Consolas,monospace;margin:0;padding:13px 16px}.tech-chip{position:absolute;padding:8px 10px;border:1px solid var(--line);background:var(--card);box-shadow:var(--shadow);border-radius:999px;font-size:8px;font-weight:900;letter-spacing:.14em;color:var(--muted)}.tc1{left:-20px;top:125px}.tc2{right:5px;top:115px}.tc3{left:70px;bottom:20px;color:var(--orange)}
.ticker{border-top:1px solid var(--line);border-bottom:1px solid var(--line);overflow:hidden;background:rgba(255,255,255,.015)}.ticker>div{max-width:1380px;margin:auto;padding:14px 24px;display:flex;justify-content:space-between;gap:15px;white-space:nowrap;color:var(--muted);font:800 9px monospace;letter-spacing:.12em}.ticker i{color:var(--blue);font-style:normal}.v3-section,.v3-materials{max-width:1380px;margin:0 auto;padding:90px 24px}.v3-section-head h2{font-size:clamp(38px,4vw,56px);max-width:820px}.v3-section-head>p{max-width:500px}.v3-track-grid{gap:16px;margin-top:36px}.track-card{position:relative;min-height:315px!important;padding:25px!important;overflow:hidden;display:flex;flex-direction:column}.track-card:before{content:"";position:absolute;width:200px;height:200px;border-radius:50%;right:-100px;top:-100px;background:var(--track-glow,rgba(54,163,255,.12));transition:.3s}.track-card:hover:before{transform:scale(1.25)}.track-blue{--track-glow:rgba(47,145,255,.21)}.track-cyan{--track-glow:rgba(67,216,255,.18)}.track-orange{--track-glow:rgba(255,155,67,.17)}.track-violet{--track-glow:rgba(141,125,255,.18)}.track-no{position:absolute;right:22px;top:18px;color:rgba(255,255,255,.18);font:bold 38px monospace}.track-icon{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;background:rgba(255,255,255,.04);border:1px solid var(--line);font-size:23px;color:var(--cyan)}.track-card h3{font-size:22px;margin:42px 0 10px!important}.track-card p{font-size:12px!important;line-height:1.65}.track-card a{margin-top:auto;color:var(--cyan);text-decoration:none;font-size:11px;font-weight:850}.compact-head{align-items:center}.section-link{color:var(--cyan);font-size:12px;font-weight:800;text-decoration:none}.continue-section{padding-top:30px}.continue-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:28px}.continue-card{display:grid;grid-template-columns:52px 1fr 28px;gap:14px;align-items:center;padding:22px;border:1px solid var(--line);background:linear-gradient(145deg,var(--card),var(--bg2));border-radius:18px;text-decoration:none;color:var(--text);transition:.2s}.continue-card:hover{transform:translateY(-3px);border-color:rgba(67,216,255,.3)}.continue-icon{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,rgba(47,145,255,.2),rgba(67,216,255,.07));color:var(--cyan);font:bold 11px monospace}.continue-card span{font-size:9px;color:var(--cyan);font-weight:850;letter-spacing:.08em}.continue-card h3{font-size:17px;margin:4px 0}.continue-card p{font-size:10px;color:var(--muted);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.continue-card>b{font-size:20px;color:var(--cyan)}
.v3-materials{padding-top:80px}.v3-toolbar{padding:13px;border:1px solid var(--line);border-radius:18px;background:rgba(255,255,255,.018);margin-bottom:12px}.v3-search{height:48px;border-radius:12px}.library-meta{display:flex;gap:8px;color:var(--muted);font-size:10px;margin:0 4px 18px}.v3-course-grid{gap:14px}.v3-course-card{min-height:325px;padding:20px 22px}.v3-course-card:after{content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:linear-gradient(180deg,var(--cyan),transparent 60%);opacity:0;transition:.2s}.v3-course-card:hover:after,.v3-course-card.is-done:after{opacity:1}.course-topline{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}.course-index{font:800 10px monospace;color:var(--muted)}.course-status{font-size:8px;font-weight:900;letter-spacing:.12em;color:var(--muted)}.is-done .course-status{color:var(--green)}.v3-course-card .pill{padding:5px 8px;font-size:8px}.pill.lecture{color:var(--cyan)}.pill.practice{color:var(--orange)}.pill.lab{color:#b7a8ff;background:rgba(141,125,255,.1)}.pill.tag{color:var(--muted);background:rgba(255,255,255,.025)}.v3-course-card h3{font-size:20px;margin:22px 0 10px}.v3-course-card p{font-size:11px;line-height:1.65}.v3-course-card .card-foot{border-top:1px solid var(--line);padding-top:15px;font-size:9px}.how-section{padding-top:75px}.how-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:30px}.how-grid article{position:relative;padding:26px 24px 28px;min-height:250px;border-radius:18px;border:1px solid var(--line);background:linear-gradient(145deg,var(--card),var(--bg2))}.how-grid article>span{position:absolute;right:20px;top:17px;color:rgba(255,255,255,.16);font:bold 30px monospace}.how-icon{width:45px;height:45px;border-radius:13px;display:grid;place-items:center;background:rgba(47,145,255,.1);color:var(--cyan);font-size:20px}.how-grid h3{font-size:18px;margin:40px 0 9px}.how-grid p{font-size:11px;color:var(--muted);line-height:1.65}.portal-cta{display:grid;grid-template-columns:1.2fr .8fr;gap:60px;align-items:center;margin-bottom:40px;padding:52px 56px;border:1px solid rgba(67,216,255,.14);border-radius:28px;background:radial-gradient(circle at 80% 0,rgba(47,145,255,.18),transparent 33%),linear-gradient(135deg,var(--card),var(--bg2));overflow:hidden}.portal-cta h2{font-size:clamp(38px,4vw,58px);line-height:1.05;margin:10px 0 18px;letter-spacing:-.04em}.portal-cta p{color:var(--muted);max-width:720px}.cta-actions{display:flex;gap:10px;margin-top:27px}.cta-stack{display:grid;gap:10px}.cta-stack>div{padding:18px 20px;border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.025)}.cta-stack b,.cta-stack span{display:block}.cta-stack b{font-size:13px}.cta-stack span{color:var(--muted);font-size:10px;margin-top:4px}.v3-footer{max-width:1380px;display:grid;grid-template-columns:1fr 1fr;gap:50px;padding-top:55px}.footer-main p{max-width:430px;color:var(--muted);font-size:11px;margin-top:18px}.footer-links{display:grid;grid-template-columns:1fr 1fr;gap:20px}.footer-links>div{display:flex;flex-direction:column;gap:8px}.footer-links b{font-size:11px}.footer-links a,.footer-links span{font-size:10px;color:var(--muted);text-decoration:none}.footer-links a:hover{color:var(--cyan)}.footer-bottom{grid-column:1/-1;padding-top:20px;border-top:1px solid var(--line);display:flex;justify-content:space-between;color:var(--muted);font-size:9px;width:100%}
@media(max-width:1050px){.v3-nav{display:none}.hero-v3{grid-template-columns:1fr;min-height:auto;gap:40px}.hero-dashboard{max-width:700px;width:100%;margin:0 auto}.v3-track-grid,.how-grid{grid-template-columns:repeat(2,1fr)}.continue-grid{grid-template-columns:1fr}.portal-cta{grid-template-columns:1fr}.v3-footer{grid-template-columns:1fr}.footer-bottom{grid-column:auto}.footer-links{max-width:500px}}
@media(max-width:650px){.v3-header{height:68px}.header-actions .cabinet-btn{display:none}.brand-v3 small{display:none}.hero-v3{padding-top:50px}.hero-v3 h1{font-size:52px}.trust-row{grid-template-columns:repeat(2,1fr)}.trust-row>div{border-bottom:1px solid var(--line)}.hero-dashboard{height:470px}.visual-main{left:0;right:8px;top:25px}.terminal-mini{width:250px;right:-3px}.tech-chip{display:none}.ticker>div{justify-content:flex-start;overflow:hidden}.v3-section,.v3-materials{padding:62px 16px}.v3-track-grid,.how-grid{grid-template-columns:1fr}.v3-section-head{display:block}.v3-section-head h2{font-size:38px}.v3-toolbar{padding:10px}.v3-course-grid{grid-template-columns:1fr}.portal-cta{margin:0 16px 35px;padding:32px 24px}.cta-actions{flex-direction:column}.v3-footer{padding:40px 16px}.footer-links{grid-template-columns:1fr 1fr}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:5px}}
/* Auth v3 */
.v3-auth{background:radial-gradient(circle at 18% 28%,rgba(47,145,255,.15),transparent 30%),var(--bg)}.v3-auth-shell{max-width:1180px;grid-template-columns:1.08fr .92fr;gap:80px;align-items:center;min-height:calc(100vh - 72px)}.v3-auth-copy h1{font-size:clamp(58px,6vw,86px);line-height:.96;letter-spacing:-.055em;margin:22px 0}.v3-auth-copy h1 span{background:linear-gradient(90deg,var(--blue),var(--cyan));-webkit-background-clip:text;color:transparent}.v3-auth-copy>p{font-size:17px;line-height:1.72}.auth-kpis{display:grid;grid-template-columns:repeat(3,1fr);max-width:500px;margin:30px 0 20px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.auth-kpis div{padding:16px 15px;border-right:1px solid var(--line)}.auth-kpis div:last-child{border:0}.auth-kpis b,.auth-kpis span{display:block}.auth-kpis b{font-size:23px}.auth-kpis span{font-size:9px;color:var(--muted)}.auth-terminal{max-width:480px;margin-top:28px;padding:17px;border:1px solid var(--line);border-radius:14px;background:#04101c;font:10px Consolas,monospace;display:grid;grid-template-columns:1fr;gap:8px;color:#8ba3b9}.auth-terminal code{color:#e9f7ff}.auth-terminal b{color:var(--green)}.v3-login-card{padding:34px 36px;border-radius:26px}.v3-login-card:before{content:"";display:block;width:50px;height:4px;border-radius:9px;background:linear-gradient(90deg,var(--blue),var(--cyan));margin-bottom:28px}.v3-role-grid .role-card{grid-template-columns:54px 1fr 24px;padding:18px}.v3-role-grid .role-card em{font-style:normal;color:var(--cyan);font-size:18px}.role-copy b,.role-copy small{display:block}.role-copy small{margin-top:3px}
/* Dashboard v3 */
.v3-sidebar{width:264px;padding:20px 15px;background:linear-gradient(180deg,color-mix(in srgb,var(--bg2) 98%,transparent),color-mix(in srgb,var(--bg) 96%,transparent))}.v3-dash-layout{grid-template-columns:264px 1fr}.v3-sidebar .dash-brand{padding:4px 8px 20px}.sidebar-label{font-size:8px;font-weight:900;letter-spacing:.14em;color:var(--muted);padding:8px 12px 10px}.v3-sidebar .side-link{border:1px solid transparent}.v3-sidebar .side-link.active{border-color:var(--line);box-shadow:inset 2px 0 0 var(--cyan)}.side-promo{margin-top:auto;margin-bottom:12px;padding:17px;border-radius:14px;background:linear-gradient(135deg,rgba(47,145,255,.13),rgba(67,216,255,.04));border:1px solid rgba(67,216,255,.12)}.side-promo span,.side-promo b,.side-promo small{display:block}.side-promo span{font-size:8px;font-weight:900;letter-spacing:.12em;color:var(--cyan)}.side-promo b{font-size:12px;margin:6px 0}.side-promo small{color:var(--muted);font-size:9px}.v3-dash-top{height:92px;padding:0 38px;background:color-mix(in srgb,var(--bg) 93%,transparent)}.dash-tools{margin-left:auto;display:flex;align-items:center;gap:12px}.dash-quick{color:var(--muted);font-size:10px;text-decoration:none;padding:8px 10px;border:1px solid var(--line);border-radius:9px}.notify-btn{position:relative;width:37px;height:37px;border-radius:11px;background:var(--card);border:1px solid var(--line);color:var(--text)}.notify-btn i{position:absolute;right:7px;top:7px;width:6px;height:6px;border-radius:50%;background:var(--orange)}.v3-dashboard .dash-content{max-width:1500px;padding:28px 38px 80px}.welcome-panel{display:flex;justify-content:space-between;align-items:center;min-height:150px;padding:30px 32px;margin-bottom:17px;border:1px solid rgba(67,216,255,.13);border-radius:20px;background:radial-gradient(circle at 88% 10%,rgba(47,145,255,.17),transparent 32%),linear-gradient(135deg,var(--card),var(--bg2));overflow:hidden}.welcome-panel h2{font-size:32px;margin:6px 0 7px;letter-spacing:-.035em}.welcome-panel p{max-width:760px;color:var(--muted);font-size:11px}.welcome-mark{width:92px;height:92px;border-radius:24px;background:linear-gradient(145deg,rgba(47,145,255,.2),rgba(67,216,255,.05));border:1px solid rgba(67,216,255,.15);display:grid;place-items:center;align-content:center}.welcome-mark b{font-size:25px}.welcome-mark span{font-size:8px;letter-spacing:.2em;color:var(--cyan)}.v3-stat-grid{gap:12px}.v3-stat{display:flex;align-items:center;gap:15px;padding:18px}.v3-stat .stat-icon{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:rgba(47,145,255,.1);color:var(--cyan);font-size:18px}.v3-stat b{font-size:26px;margin:3px 0}.v3-dash-grid{grid-template-columns:minmax(0,1.7fr) minmax(280px,.75fr)}.route-panel{min-height:480px}.v3-progress{height:9px;margin-bottom:15px}.journey-list a{display:flex;align-items:center;gap:13px;padding:12px 2px;border-bottom:1px solid var(--line);text-decoration:none;color:var(--text)}.journey-dot{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;background:rgba(47,145,255,.08);color:var(--cyan);font:800 9px monospace}.journey-list a.done .journey-dot{background:rgba(98,231,168,.1);color:var(--green)}.journey-list b,.journey-list small{display:block}.journey-list b{font-size:12px}.journey-list small{font-size:9px;color:var(--muted);margin-top:2px}.journey-list em{margin-left:auto;font-style:normal;font-size:9px;color:var(--cyan)}.next-panel p{font-size:11px;color:var(--muted);line-height:1.65}.next-meta{display:flex;gap:7px;margin:14px 0 18px}.next-meta span{padding:6px 8px;border-radius:8px;background:var(--card2);font-size:9px;color:var(--muted)}.upcoming{margin-top:28px;padding-top:18px;border-top:1px solid var(--line)}.v3-group-grid{gap:10px}.v3-group-card{min-height:160px}.group-head{display:flex;justify-content:space-between}.group-head strong{font-size:25px!important;margin:0!important}.group-foot{display:flex;justify-content:space-between;align-items:center;margin-top:6px}.group-foot a{font-size:9px;color:var(--cyan);text-decoration:none}.v3-table tbody tr:hover{background:rgba(67,216,255,.025)}.v3-dash-materials a{transition:.2s}.v3-dash-materials a:hover{border-color:rgba(67,216,255,.26);transform:translateY(-1px)}.v3-dash-materials a.done{box-shadow:inset 2px 0 0 var(--green)}.v3-test-card{position:relative;overflow:hidden}.test-icon{position:absolute;right:18px;top:16px;font-size:36px;font-weight:900;color:rgba(255,255,255,.07)}.v3-test-card .test-result b{color:var(--cyan);font-size:18px;margin-left:5px}.average-chip{padding:9px 12px;border:1px solid var(--line);border-radius:10px;color:var(--muted);font-size:9px}.average-chip b{color:var(--cyan);font-size:17px;margin-left:6px}.role-admin article>a{margin-left:auto;color:var(--cyan);text-decoration:none;font-size:9px}
/* Lesson/quiz refinements */
.v3-lesson-shell{max-width:1320px;grid-template-columns:270px 1fr}.v3-toc{border-radius:18px;padding:22px;background:linear-gradient(145deg,var(--card),var(--bg2))}.toc-cabinet{display:block;margin-top:17px;padding:10px;border-top:1px solid var(--line);color:var(--cyan);text-decoration:none;font-size:10px}.v3-lesson .lesson-hero{padding:50px;border-radius:25px;background:radial-gradient(circle at 90% 0,rgba(47,145,255,.18),transparent 34%),linear-gradient(135deg,var(--card),var(--bg2))}.v3-lesson .lesson-hero h1{font-size:clamp(40px,5vw,62px);max-width:900px}.v3-lesson .lesson-section{max-width:920px;padding:42px 18px}.v3-lesson .lesson-section p,.v3-lesson .lesson-section li{font-size:15px;line-height:1.8}.v3-lesson-end{max-width:920px;border-radius:22px}.v3-quiz .quiz-card{border-radius:24px;background:radial-gradient(circle at 90% 0,rgba(47,145,255,.12),transparent 24%),linear-gradient(145deg,var(--card),var(--bg2))}.v3-quiz .answer{transition:.15s}.v3-quiz .answer:hover{transform:translateX(2px)}
@media(max-width:1000px){.v3-auth-shell{grid-template-columns:1fr;max-width:720px}.v3-dash-layout{display:block}.v3-sidebar{width:264px}.dash-tools .dash-quick,.notify-btn{display:none}.welcome-mark{display:none}.v3-dashboard .dash-content{padding:24px 20px 60px}}
@media(max-width:600px){.v3-auth-shell{padding:42px 16px}.v3-auth-copy h1{font-size:49px}.auth-kpis{grid-template-columns:repeat(3,1fr)}.v3-login-card{padding:25px 22px}.v3-dash-top{padding:0 15px}.welcome-panel{padding:24px}.welcome-panel h2{font-size:26px}.v3-dashboard .dash-content{padding:18px 15px 55px}.v3-stat{padding:15px}.v3-stat .stat-icon{width:36px;height:36px}.v3-dash-grid{grid-template-columns:1fr}.v3-lesson .lesson-hero{padding:28px}.v3-lesson .lesson-section{padding-left:4px;padding-right:4px}}