:root,[data-theme=light]{--bg: #fff7fb;--bg-elev: #ffffff;--bg-panel: rgba(255, 255, 255, .78);--line: rgba(124, 40, 140, .12);--line-strong: rgba(124, 40, 140, .22);--text: #1b1024;--text-body: #3d2a46;--muted: #74607c;--faint: #a08aa8;--accent: #d61f8c;--accent-2: #7a27d4;--accent-dim: rgba(214, 31, 140, .12);--glow-a: rgba(214, 31, 140, .22);--glow-b: rgba(122, 39, 212, .16);--grid: rgba(122, 39, 212, .07);--danger: #c23b4a;--ok: #1f8a5b;--btn-on-accent: #ffffff;--input-bg: #fff;--chrome: #f4e8f6;--header-h: 76px}[data-theme=dark]{--bg: #05070d;--bg-elev: #0b101c;--bg-panel: rgba(11, 16, 28, .78);--line: rgba(147, 197, 253, .12);--line-strong: rgba(147, 197, 253, .22);--text: #eef3ff;--text-body: #c5d0e8;--muted: #8ea0c2;--faint: #5d6f91;--accent: #60a5fa;--accent-2: #3b82f6;--accent-dim: rgba(96, 165, 250, .14);--glow-a: rgba(59, 130, 246, .22);--glow-b: rgba(14, 165, 233, .12);--grid: rgba(96, 165, 250, .06);--danger: #f87171;--ok: #34d399;--btn-on-accent: #061018;--input-bg: #080c16;--chrome: #0e1524;--header-h: 76px}:root{--font-display: "Sora", sans-serif;--font-ui: "Outfit", sans-serif;--radius: 20px}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}html,body{height:100dvh;overflow:hidden;background:var(--bg);color:var(--text);font-family:var(--font-ui);font-weight:400;letter-spacing:.01em;-webkit-font-smoothing:antialiased}button,input,textarea{font:inherit;color:inherit}button{cursor:pointer}a{color:inherit;text-decoration:none}.ambient{position:fixed;inset:0;z-index:0;pointer-events:none;background:radial-gradient(920px 480px at 88% -8%,var(--glow-a),transparent 58%),radial-gradient(760px 420px at -10% 110%,var(--glow-b),transparent 52%),var(--bg)}.grid-field{position:fixed;inset:0;z-index:1;perspective-origin:50% 42%}.grid-plane{position:absolute;inset:-6% -4%;display:grid;gap:12px;transform:rotateX(22deg) rotate(-6deg) scale(1.12);transform-style:preserve-3d;-webkit-mask-image:radial-gradient(ellipse at 50% 40%,black 18%,transparent 78%);mask-image:radial-gradient(ellipse at 50% 40%,black 18%,transparent 78%)}.grid-cell{display:block;border-radius:7px;border:1px solid color-mix(in srgb,var(--accent-2) 22%,transparent);background:color-mix(in srgb,var(--accent) 6%,transparent);transform:translateZ(0);transform-style:preserve-3d;animation:cell-lift 5.6s ease-in-out infinite}@keyframes cell-lift{0%,68%,to{transform:translateZ(0) rotateX(0);opacity:.28;box-shadow:none;border-color:color-mix(in srgb,var(--accent-2) 18%,transparent)}16%{transform:translate3d(0,-8px,42px) rotateX(10deg);opacity:.95;border-color:color-mix(in srgb,var(--accent) 70%,transparent);box-shadow:0 18px 28px color-mix(in srgb,var(--accent) 22%,transparent),0 0 0 1px color-mix(in srgb,var(--accent) 18%,transparent)}}@media(prefers-reduced-motion:reduce){.grid-cell{animation:none}}.app-root{position:relative;z-index:2;height:100dvh}.app-content{position:relative;z-index:2;height:100%}.full{height:100dvh}.boot{height:100dvh;display:grid;place-items:center;color:var(--muted);letter-spacing:.28em;text-transform:uppercase;font-size:11px}.kicker{margin:0 0 12px;color:var(--accent);font-size:11px;letter-spacing:.28em;text-transform:uppercase;font-weight:600}h1,h2,h3{font-family:var(--font-display);font-weight:600;letter-spacing:-.02em;line-height:1.18;margin:0}.eyebrow{color:var(--muted);margin:16px 0 0;font-size:16px;line-height:1.6;max-width:52ch;font-weight:400}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:999px;padding:12px 20px;transition:transform .18s ease,background .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease}.btn:hover{transform:translateY(-1px)}.btn:disabled{opacity:.55;cursor:not-allowed;transform:none}.btn-accent,.btn-gold{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:var(--btn-on-accent);font-weight:600}.btn-accent:hover,.btn-gold:hover{box-shadow:0 10px 28px color-mix(in srgb,var(--accent) 28%,transparent)}.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--line-strong)}.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}.theme-toggle{width:40px;height:40px;border-radius:50%;border:1px solid var(--line-strong);background:var(--bg-elev);color:var(--text);display:grid;place-items:center;flex-shrink:0}.theme-toggle:hover{border-color:var(--accent);color:var(--accent)}.field{display:grid;gap:6px}.field span{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}.field input{background:var(--input-bg);border:1px solid var(--line-strong);border-radius:12px;padding:12px 14px;outline:none}.field input:focus{border-color:var(--accent)}.form-error{color:var(--danger);font-size:13px;margin:0;min-height:1.2em}.brand{display:flex;align-items:center;gap:10px}.brand-mark{width:28px;height:28px;color:var(--accent)}.brand-name{font-family:var(--font-display);font-weight:600;font-size:15px;letter-spacing:.06em;text-transform:uppercase}.landing{height:100dvh;display:grid;grid-template-rows:var(--header-h) 1fr;overflow:hidden}.topbar{display:flex;align-items:center;justify-content:space-between;padding:0 28px;border-bottom:1px solid var(--line);gap:16px}.tabs{display:flex;align-items:center;gap:2px;position:relative}.tab{position:relative;background:none;border:0;color:var(--muted);padding:10px 12px;font-size:13px;letter-spacing:.03em}.tab.active{color:var(--text)}.tab-ink{position:absolute;left:12px;right:12px;bottom:4px;height:2px;background:linear-gradient(90deg,var(--accent),var(--accent-2));border-radius:2px}.auth-actions{display:flex;align-items:center;gap:8px;justify-content:flex-end}.hamburger{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line-strong);background:var(--bg-elev);padding:10px 11px;flex-direction:column;justify-content:space-between}.hamburger span{display:block;height:2px;background:var(--text);border-radius:2px;transform-origin:center;transition:transform .22s ease,opacity .22s ease}.hamburger.open span:nth-child(1){transform:translateY(8px) rotate(45deg)}.hamburger.open span:nth-child(2){opacity:0}.hamburger.open span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}.menu-scrim{position:fixed;inset:0;z-index:20;background:color-mix(in srgb,var(--bg) 55%,transparent);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.menu-panel{position:absolute;top:0;right:0;height:100dvh;width:min(100%,420px);background:var(--bg-elev);border-left:1px solid var(--line);padding:24px 22px 32px;display:grid;grid-template-rows:auto 1fr auto;gap:20px}.menu-head{display:flex;justify-content:space-between;align-items:center}.menu-nav{display:grid;align-content:start;gap:4px}.menu-nav button{text-align:left;background:none;border:0;border-radius:14px;padding:14px 12px;font-family:var(--font-display);font-size:28px;font-weight:600;color:var(--muted)}.menu-nav button.active,.menu-nav button:hover{color:var(--text);background:var(--accent-dim)}.menu-foot{display:grid;gap:10px}.stage{min-height:0;overflow:hidden;position:relative}.stage-inner{position:absolute;inset:0;padding:36px 56px 40px;display:grid;align-items:center;perspective:1000px}.hero{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;height:100%}.hero h1,.display{font-size:clamp(34px,4.4vw,64px);line-height:1.16;max-width:16ch;font-weight:600}.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}.meta-panel{border:1px solid var(--line);background:var(--bg-panel);border-radius:var(--radius);padding:28px;display:grid;gap:22px;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.meta-row{display:flex;justify-content:space-between;gap:16px;padding-bottom:16px;border-bottom:1px solid var(--line)}.meta-row:last-child{padding-bottom:0;border-bottom:0}.meta-row strong{font-family:var(--font-display);font-size:22px;background:linear-gradient(135deg,var(--accent),var(--accent-2));-webkit-background-clip:text;background-clip:text;color:transparent}.meta-row span{color:var(--muted);font-size:13px;text-align:right}.pillars{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:18px;height:min(100%,520px)}.pillar{border:1px solid var(--line);border-radius:var(--radius);padding:28px 24px;background:var(--bg-panel);display:flex;flex-direction:column;min-height:0}.pillar.featured{background:linear-gradient(180deg,var(--accent-dim),transparent 48%),var(--bg-panel);border-color:color-mix(in srgb,var(--accent) 40%,var(--line))}.pillar-index{font-family:var(--font-display);color:var(--accent);font-size:13px;letter-spacing:.2em}.pillar h2{font-size:28px;margin:18px 0 12px}.pillar p{margin:0;color:var(--muted);line-height:1.55}.split{display:grid;grid-template-columns:.95fr 1.05fr;gap:40px;align-items:center;height:100%}.split h1{font-size:clamp(32px,3.8vw,52px);line-height:1.16;max-width:14ch}.editor-chrome{border:1px solid var(--line-strong);border-radius:16px;overflow:hidden;background:var(--chrome);min-height:0;height:min(100%,460px);display:grid;grid-template-rows:40px 1fr}.editor-bar{display:flex;align-items:center;gap:8px;padding:0 14px;border-bottom:1px solid var(--line);color:var(--faint);font-size:12px}.dot{width:8px;height:8px;border-radius:50%;background:var(--faint)}.dot.g{background:#34d399}.dot.y{background:#fbbf24}.dot.r{background:#f87171}.editor-body{padding:18px 20px;font-family:ui-monospace,Cascadia Code,monospace;font-size:13px;line-height:1.7;color:var(--text-body);overflow:hidden}.editor-body .cm{color:var(--faint)}.editor-body .kw{color:var(--accent)}.editor-body .fn{color:var(--accent-2)}.video-layout{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(260px,.9fr);gap:22px;height:100%;min-height:0;align-items:stretch}.video-feature-wrap,.toc-wrap{min-height:0;height:100%}.video-feature{height:100%;min-height:0;display:grid;grid-template-rows:1fr auto;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--bg-elev)}.video-thumb{background:linear-gradient(180deg,transparent,color-mix(in srgb,var(--bg) 72%,transparent)),radial-gradient(circle at 30% 30%,var(--glow-a),transparent 42%),var(--chrome);min-height:220px;height:100%;display:grid;place-items:center}.play{width:64px;height:64px;border-radius:50%;border:1px solid color-mix(in srgb,var(--accent) 45%,transparent);background:color-mix(in srgb,var(--bg) 45%,transparent);display:grid;place-items:center}.play span{width:0;height:0;border-left:14px solid var(--accent);border-top:9px solid transparent;border-bottom:9px solid transparent;margin-left:3px}.video-meta{padding:16px 18px 18px}.video-meta small{color:var(--accent);letter-spacing:.16em;text-transform:uppercase;font-size:10px}.video-meta h3{font-size:22px;margin-top:6px}.toc{height:100%;min-height:0;display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--radius);background:var(--bg-panel);overflow:auto}.toc-head{padding:18px 18px 12px}.toc-head h3{font-size:18px;margin-top:4px}.toc-row{display:grid;grid-template-columns:40px minmax(0,1fr) auto;gap:12px;align-items:center;padding:12px 18px;border-top:1px solid var(--line)}.toc-row.current{background:var(--accent-dim)}.toc-idx{font-family:var(--font-display);color:var(--accent);font-size:13px}.toc-row strong{display:block;font-size:14px;font-weight:600}.toc-row p,.toc-row time{margin:4px 0 0;color:var(--muted);font-size:12px}.toc-row time{margin:0;font-variant-numeric:tabular-nums}.timeline{display:grid;grid-template-columns:1fr 1fr;gap:28px;height:100%;align-items:center}.steps{display:grid;gap:0}.step{display:grid;grid-template-columns:44px minmax(0,1fr);gap:14px;padding:16px 0;border-top:1px solid var(--line)}.step:first-child{border-top:0}.step-num{font-family:var(--font-display);color:var(--accent);font-size:18px;padding-top:2px}.step-label{margin:0 0 4px;color:var(--accent);font-size:11px;letter-spacing:.16em;text-transform:uppercase}.step h3{font-size:20px}.exam-stage{display:grid;place-items:center;height:100%;text-align:center}.exam-card{max-width:640px}.exam-card h1{font-size:clamp(32px,4vw,52px);line-height:1.16;max-width:18ch;margin:0 auto}.exam-card p{color:var(--muted);margin:16px auto 0;max-width:48ch;line-height:1.55}.exam-card .hero-cta{justify-content:center}@media(max-width:1023px){:root{--header-h: 64px}.topbar{padding:0 16px}.tabs,.auth-actions{display:none}.hamburger{display:flex}.stage-inner{padding:28px 24px 24px;align-items:stretch;overflow:auto}.hero,.pillars,.split,.video-layout,.timeline{grid-template-columns:1fr;height:auto;gap:22px}.hero h1,.split h1,.display,.exam-card h1{max-width:none;font-size:clamp(30px,5.4vw,44px)}.pillars,.video-feature-wrap,.toc-wrap,.video-feature{height:auto}.video-thumb{min-height:0;aspect-ratio:16 / 9;height:auto}}@media(max-width:767px){.stage-inner{padding:20px 16px 18px}.hero-cta .btn{width:100%}.menu-nav button{font-size:24px}.meta-panel,.pillar{padding:20px 16px}}.auth-screen{height:100dvh;display:grid;grid-template-columns:1fr 1fr;overflow:hidden}.auth-brand{padding:36px 48px;display:flex;flex-direction:column;justify-content:space-between;border-right:1px solid var(--line)}.auth-brand-top{display:flex;justify-content:space-between;align-items:center;gap:12px}.auth-brand h1{font-size:clamp(32px,4.4vw,56px);line-height:1.16;max-width:14ch;font-weight:600}.auth-form-wrap{display:grid;place-items:center;padding:32px;overflow:auto}.auth-form{width:min(100%,380px);display:grid;gap:14px}.auth-form h2{font-size:32px;line-height:1.2;margin-bottom:4px}.auth-form .lede{margin:0 0 8px;color:var(--muted)}.auth-switch{background:none;border:0;color:var(--accent);text-align:left;padding:0}.back-link{background:none;border:0;color:var(--muted);padding:0;width:fit-content}.back-link:hover{color:var(--text)}.auth-mobile-bar{display:none}@media(max-width:1023px){.auth-screen{grid-template-columns:1fr}.auth-brand{display:none}.auth-mobile-bar{display:flex;justify-content:space-between;align-items:center;width:min(100%,380px);margin-bottom:8px}.auth-form-wrap{padding:24px 16px 28px;align-content:start}}.portal{height:100dvh;display:grid;grid-template-columns:300px 1fr;overflow:hidden}.sidebar{border-right:1px solid var(--line);display:grid;grid-template-rows:var(--header-h) auto 1fr auto;min-height:0;background:color-mix(in srgb,var(--bg-elev) 80%,transparent)}.sidebar-head{display:flex;align-items:center;justify-content:space-between;padding:0 14px 0 18px;border-bottom:1px solid var(--line);gap:8px}.progress-block{padding:14px 16px 12px;border-bottom:1px solid var(--line)}.progress-meta{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:8px;font-size:12px;color:var(--muted)}.progress-meta strong{font-family:var(--font-display);color:var(--text);font-size:18px}.progress-track{height:6px;border-radius:99px;background:var(--line);overflow:hidden}.progress-track span{display:block;height:100%;background:linear-gradient(90deg,var(--accent),var(--accent-2));border-radius:inherit}.module-nav{padding:10px 10px 16px;overflow:auto;display:grid;align-content:start;gap:14px}.course-group{display:grid;gap:4px}.course-label{margin:0;padding:6px 12px 4px;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--faint);display:flex;justify-content:space-between;gap:8px}.course-label em{font-style:normal;color:var(--accent);letter-spacing:.08em}.module-btn{display:grid;gap:2px;text-align:left;background:transparent;border:1px solid transparent;border-radius:12px;padding:10px 12px;color:var(--muted)}.module-btn small{letter-spacing:.08em;text-transform:uppercase;font-size:10px;color:var(--faint)}.module-btn strong{font-weight:500;color:var(--text);font-size:14px}.module-btn.active{background:var(--accent-dim);border-color:color-mix(in srgb,var(--accent) 40%,transparent);color:var(--text)}.module-btn.locked{opacity:.45;cursor:not-allowed}.sidebar-user{border-top:1px solid var(--line);padding:14px 16px 16px;display:flex;justify-content:space-between;align-items:center;gap:12px}.sidebar-user span{font-size:13px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.scene{min-width:0;min-height:0;overflow:auto;padding:36px 48px 48px}.scene-kicker{display:flex;justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:18px}.scene h1{font-size:clamp(28px,3.2vw,42px);line-height:1.18;margin-bottom:18px;font-weight:600}.article{max-width:68ch;color:var(--text-body);line-height:1.7}.article p{margin:0 0 14px}.article h3{font-size:20px;margin:22px 0 10px;color:var(--text)}.video-player{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--chrome);max-width:860px}.video-stage{aspect-ratio:16 / 9;display:grid;place-items:center;background:radial-gradient(circle at 50% 40%,var(--glow-a),transparent 42%),var(--chrome)}.video-caption{padding:14px 18px 16px;color:var(--muted);font-size:14px;border-top:1px solid var(--line)}.lock-banner{border:1px solid color-mix(in srgb,var(--accent) 40%,transparent);background:var(--accent-dim);color:var(--accent);border-radius:12px;padding:12px 14px;margin-bottom:18px;font-size:14px;max-width:68ch}.download-card{max-width:52ch;display:grid;gap:16px;color:var(--text-body);line-height:1.6}.download-card .btn{width:fit-content}.done-note{margin-top:16px;color:var(--muted);font-size:13px}.quiz{max-width:720px;display:grid;gap:14px}.question{border:1px solid var(--line);border-radius:14px;padding:16px 16px 12px;background:var(--bg-panel)}.question p{margin:0 0 12px;font-weight:500}.options{display:grid;gap:8px}.option{text-align:left;background:var(--input-bg);border:1px solid var(--line);border-radius:10px;padding:10px 12px}.option.selected{border-color:var(--accent);background:var(--accent-dim)}.quiz-result{border:1px solid var(--line);border-radius:14px;padding:18px}.quiz-result strong{font-family:var(--font-display);font-size:28px;display:block;margin-bottom:6px}.portal-mobile-user{display:none}@media(max-width:1023px){.portal{grid-template-columns:1fr;grid-template-rows:auto auto auto 1fr}.sidebar{grid-template-rows:64px auto minmax(120px,34vh);border-right:0;border-bottom:1px solid var(--line)}.module-nav{display:block}.sidebar-user{display:none}.portal-mobile-user{display:flex;justify-content:space-between;align-items:center;padding:8px 16px;border-bottom:1px solid var(--line);font-size:13px;color:var(--muted)}.scene{padding:22px 16px 32px}}@media(max-width:767px){.scene h1{font-size:28px}}