@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/2c55a0e60120577a-s.0-dom-5bn10r2.woff2)format("woff2");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/9c72aa0f40e4eef8-s.p.1y4-pdgsjb-pw.woff2)format("woff2");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/ad66f9afd8947f86-s.3lvt2whj97whp.woff2)format("woff2");unicode-range:U+1F??}@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/5476f68d60460930-s.2uwcyprjm3xu3.woff2)format("woff2");unicode-range:U+370-377,U+37A-37F,U+384-38A,U+38C,U+38E-3A1,U+3A3-3FF}@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/2bbe8d2671613f1f-s.0k62hbripvv8p.woff2)format("woff2");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/1bffadaabf893a1e-s.3-6t-g6q0vh0a.woff2)format("woff2");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/83afe278b6a6bb3c-s.p.2bn3s6zvc0dyp.woff2)format("woff2");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Inter Fallback;src:local(Arial);ascent-override:90.44%;descent-override:22.52%;line-gap-override:0.0%;size-adjust:107.12%}.inter_9b9db241-module__sLJoNW__className{font-family:Inter,Inter Fallback;font-style:normal}.inter_9b9db241-module__sLJoNW__variable{--font-inter:"Inter", "Inter Fallback"}
@font-face{font-family:JetBrains Mono;font-style:normal;font-weight:100 800;font-display:swap;src:url(../media/13bf9871fe164e7f-s.2f7nqdagzwx2-.woff2)format("woff2");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:JetBrains Mono;font-style:normal;font-weight:100 800;font-display:swap;src:url(../media/cc545e633e20c56d-s.176arc174-8zp.woff2)format("woff2");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:JetBrains Mono;font-style:normal;font-weight:100 800;font-display:swap;src:url(../media/71b036adf157cdcf-s.0bp8oijd_gu96.woff2)format("woff2");unicode-range:U+370-377,U+37A-37F,U+384-38A,U+38C,U+38E-3A1,U+3A3-3FF}@font-face{font-family:JetBrains Mono;font-style:normal;font-weight:100 800;font-display:swap;src:url(../media/89b21bb081cb7469-s.1fby2rem9ngyr.woff2)format("woff2");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:JetBrains Mono;font-style:normal;font-weight:100 800;font-display:swap;src:url(../media/3fe682a82f50d426-s.0vfdmo25voy_0.woff2)format("woff2");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:JetBrains Mono;font-style:normal;font-weight:100 800;font-display:swap;src:url(../media/70bc3e132a0a741e-s.p.3t6q91iet4nsy.woff2)format("woff2");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:JetBrains Mono Fallback;src:local(Arial);ascent-override:75.79%;descent-override:22.29%;line-gap-override:0.0%;size-adjust:134.59%}.jetbrains_mono_7ea1d0f9-module__6GV5LG__className{font-family:JetBrains Mono,JetBrains Mono Fallback;font-style:normal}.jetbrains_mono_7ea1d0f9-module__6GV5LG__variable{--font-jetbrains-mono:"JetBrains Mono", "JetBrains Mono Fallback"}
:root{--container-max:1500px;--header-h:84px;--radius-sm:10px;--radius-md:16px;--radius-lg:24px;--radius-xl:32px;--ease:cubic-bezier(.22,1,.36,1);--font-body:var(--font-inter), system-ui, -apple-system, "Segoe UI", sans-serif;--font-mono:var(--font-jetbrains-mono), ui-monospace, "SFMono-Regular", monospace;--background:#07080d;--surface:#0e1017;--surface-2:#151824;--surface-3:#1b1f2e;--text-primary:#f3f4f8;--text-secondary:#a8adc0;--text-tertiary:#6c7286;--accent:#6d5ef8;--accent-2:#22d3ee;--accent-3:#f5b94e;--accent-grad:linear-gradient(135deg, #6d5ef8 0%, #4f8cff 45%, #22d3ee 100%);--border:#ffffff17;--border-strong:#ffffff29;--success:#34d399;--danger:#f97066;--shadow-sm:0 2px 10px #00000040;--shadow-md:0 12px 40px #00000059;--shadow-lg:0 24px 80px #00000073;--glow-accent:0 0 0 1px #6d5ef840, 0 8px 30px #6d5ef840;--code-bg:#0b0d14;--scrim:#07080db3}:root[data-theme=light]{--background:#f7f8fb;--surface:#fff;--surface-2:#f1f2f8;--surface-3:#e9ebf3;--text-primary:#12131a;--text-secondary:#4b4f5f;--text-tertiary:#7b7f92;--accent:#5b4bf0;--accent-2:#0891b2;--accent-3:#d98a1c;--accent-grad:linear-gradient(135deg, #5b4bf0 0%, #3d7bf0 45%, #0891b2 100%);--border:#0f111a1a;--border-strong:#0f111a2e;--success:#10966a;--danger:#d84f43;--shadow-sm:0 2px 10px #1416280f;--shadow-md:0 12px 40px #14162814;--shadow-lg:0 24px 80px #1416281f;--glow-accent:0 0 0 1px #5b4bf02e, 0 8px 30px #5b4bf026;--code-bg:#10121c;--scrim:#f7f8fbb3}*,:before,:after{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px;overflow-x:clip}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{transition-duration:.001ms!important;animation-duration:.001ms!important;animation-iteration-count:1!important}}body{background:var(--background);color:var(--text-primary);font-family:var(--font-body);-webkit-font-smoothing:antialiased;transition:background .25s var(--ease), color .25s var(--ease);margin:0;font-size:16px;line-height:1.6;overflow-x:clip}img,svg{max-width:100%;display:block}a{color:inherit;text-decoration:none}ul{margin:0;padding:0;list-style:none}h1,h2,h3,h4,p{margin:0}button{font:inherit;color:inherit;cursor:pointer;background:0 0;border:none}svg.lucide{stroke-width:2px;width:1em;height:1em;display:inline-block}.skip-link{z-index:1000;background:var(--accent);color:#fff;border-radius:0 0 8px;padding:12px 20px;position:absolute;top:0;left:-9999px}.skip-link:focus{left:0}:focus-visible{outline:2px solid var(--accent-2);outline-offset:3px;border-radius:4px}.container{max-width:var(--container-max);margin:0 auto;padding:0 40px}.section{padding:120px 0;position:relative}.section-header{text-align:center;max-width:720px;margin:0 auto 64px}.section-header.align-left{text-align:left;margin:0 0 48px}.section-header h2{letter-spacing:-.02em;margin:12px 0 16px;font-size:clamp(32px,3.6vw,52px);font-weight:800}.section-header p{color:var(--text-secondary);font-size:18px}.eyebrow{letter-spacing:.08em;text-transform:uppercase;color:var(--accent-2);font-size:13px;font-weight:700;display:inline-block}.gradient-text{background:var(--accent-grad);color:#0000;-webkit-background-clip:text;background-clip:text}.reveal{opacity:0;transition:opacity .7s var(--ease), transform .7s var(--ease);transform:translateY(28px)}.reveal.is-visible{opacity:1;transform:translateY(0)}@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transition:none;transform:none}}.btn{white-space:nowrap;transition:transform .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);border:1px solid #0000;border-radius:999px;justify-content:center;align-items:center;gap:8px;padding:14px 26px;font-size:15px;font-weight:600;display:inline-flex}.btn svg{width:18px;height:18px}.btn-primary{background:var(--accent-grad);color:#fff;box-shadow:var(--glow-accent)}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 40px #6d5ef859}.btn-primary:active{transform:translateY(0)}.btn-secondary{background:var(--surface-2);color:var(--text-primary);border-color:var(--border-strong)}.btn-secondary:hover{background:var(--surface-3);transform:translateY(-2px)}.btn-ghost{color:var(--text-primary);border-color:var(--border);background:0 0}.btn-ghost:hover{background:var(--surface-2)}.btn-sm{padding:10px 18px;font-size:14px}.btn-lg{padding:17px 32px;font-size:16px}.site-header{z-index:500;padding:14px 0;position:sticky;top:0}.header-inner{background:color-mix(in srgb, var(--surface) 78%, transparent);-webkit-backdrop-filter:blur(18px)saturate(150%);border:1px solid var(--border);box-shadow:var(--shadow-sm);transition:box-shadow .3s var(--ease), background .3s var(--ease);border-radius:999px;justify-content:space-between;align-items:center;gap:12px;padding:10px 10px 10px 22px;display:flex}.site-header.scrolled .header-inner{box-shadow:var(--shadow-md)}.logo{letter-spacing:-.01em;flex-shrink:0;align-items:center;gap:10px;font-size:19px;font-weight:800;display:flex}.logo-mark{background:var(--accent-grad);color:#fff;border-radius:10px;justify-content:center;align-items:center;width:34px;height:34px;display:inline-flex}.logo-mark svg{width:18px;height:18px}.main-nav{flex:1;justify-content:center;align-items:center;gap:1px;min-width:0;display:flex}.nav-link{color:var(--text-secondary);transition:color .2s var(--ease), background .2s var(--ease);white-space:nowrap;border-radius:999px;padding:8px 11px;font-size:13.5px;font-weight:500}.nav-link:hover,.nav-link.active{color:var(--text-primary);background:var(--surface-2)}.header-actions{flex-shrink:0;align-items:center;gap:8px;display:flex}.lang-switch{background:var(--surface-2);border-radius:999px;align-items:center;gap:2px;padding:3px;display:flex}.lang-btn{color:var(--text-tertiary);transition:color .2s var(--ease), background .2s var(--ease);border-radius:999px;padding:7px 11px;font-size:12.5px;font-weight:700}.lang-btn.active{color:#fff;background:var(--accent-grad)}.lang-btn:hover:not(.active){color:var(--text-primary)}.theme-toggle{background:var(--surface-2);border:1px solid var(--border);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:38px;height:38px;display:inline-flex;position:relative}.theme-toggle svg{width:17px;height:17px;transition:opacity .2s var(--ease), transform .3s var(--ease);position:absolute}.icon-moon{opacity:1;transform:scale(1)}.icon-sun{opacity:0;transform:scale(.5)rotate(-45deg)}:root[data-theme=light] .icon-moon{opacity:0;transform:scale(.5)rotate(45deg)}:root[data-theme=light] .icon-sun{opacity:1;transform:scale(1)rotate(0)}.header-login{display:none}.mobile-menu-btn{background:var(--surface-2);border-radius:50%;justify-content:center;align-items:center;width:38px;height:38px;display:none}.mobile-menu-btn svg{width:19px;height:19px}@media (min-width:1440px){.header-login{display:inline-flex}}@media (max-width:1220px){.main-nav{display:none}.mobile-menu-btn{display:inline-flex}}@media (max-width:560px){.header-cta{display:none}}.mobile-drawer{background:var(--surface);border-left:1px solid var(--border);z-index:900;width:min(340px,86vw);height:100dvh;transition:transform .35s var(--ease);box-shadow:var(--shadow-lg);flex-direction:column;gap:24px;padding:20px;display:flex;position:fixed;top:0;right:0;transform:translate(100%)}.mobile-drawer.open{transform:translate(0)}.mobile-drawer-header{justify-content:space-between;align-items:center;display:flex}.mobile-drawer-close{background:var(--surface-2);border-radius:50%;justify-content:center;align-items:center;width:36px;height:36px;display:inline-flex}.mobile-nav{flex-direction:column;gap:2px;display:flex}.mobile-nav-link{color:var(--text-secondary);border-radius:10px;padding:13px 10px;font-size:16px;font-weight:500}.mobile-nav-link:hover{background:var(--surface-2);color:var(--text-primary)}.mobile-drawer-actions{flex-direction:column;gap:10px;margin-top:auto;display:flex}.mobile-drawer-actions .btn{width:100%}.mobile-drawer-backdrop{background:var(--scrim);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:890;opacity:0;pointer-events:none;transition:opacity .3s var(--ease);position:fixed;inset:0}.mobile-drawer-backdrop.open{opacity:1;pointer-events:auto}.hero{padding:96px 0 120px;position:relative;overflow:hidden}.hero-bg{z-index:0;pointer-events:none;position:absolute;inset:0}.glow{filter:blur(90px);opacity:.55;border-radius:50%;position:absolute}.glow-1{background:var(--accent);width:560px;height:560px;top:-180px;left:-120px}.glow-2{background:var(--accent-2);opacity:.35;width:480px;height:480px;top:60px;right:-160px}.glow-3{background:var(--accent-3);opacity:.18;width:380px;height:380px;bottom:-160px;left:30%}.grid-overlay{background-image:linear-gradient(var(--border) 1px, transparent 1px), linear-gradient(90deg, var(--border) 1px, transparent 1px);opacity:.6;background-size:64px 64px;position:absolute;inset:0;-webkit-mask-image:radial-gradient(70% 60% at 50% 20%,#000 40%,#0000 90%);mask-image:radial-gradient(70% 60% at 50% 20%,#000 40%,#0000 90%)}.hero-inner{z-index:1;grid-template-columns:1fr 1fr;align-items:center;gap:40px;display:grid;position:relative}.hero-badge{border:1px solid var(--border-strong);background:var(--surface-2);color:var(--text-secondary);border-radius:999px;align-items:center;gap:9px;margin-bottom:26px;padding:8px 16px;font-size:13.5px;font-weight:600;display:inline-flex}.hero-badge .dot{background:var(--success);width:7px;height:7px;box-shadow:0 0 0 4px color-mix(in srgb, var(--success) 25%, transparent);border-radius:50%}.hero-title{letter-spacing:-.03em;margin-bottom:26px;font-size:clamp(42px,5.4vw,76px);font-weight:900;line-height:1.06}.hero-subtitle{color:var(--text-secondary);max-width:540px;margin-bottom:12px;font-size:clamp(17px,1.4vw,20px)}.hero-extra{color:var(--text-tertiary);margin-bottom:36px;font-size:16px}.hero-cta-row{flex-wrap:wrap;gap:14px;margin-bottom:44px;display:flex}.hero-trust{flex-wrap:wrap;gap:26px;display:flex}.trust-item{color:var(--text-secondary);align-items:center;gap:8px;font-size:14px;font-weight:600;display:flex}.trust-item svg{width:17px;height:17px;color:var(--accent-2)}.hero-visual{height:520px;position:relative}.hero-orbit-ring{border:1px dashed var(--border-strong);border-radius:50%;animation:40s linear infinite spin;position:absolute;inset:8%}@keyframes spin{to{transform:rotate(360deg)}}.float-card{background:color-mix(in srgb, var(--surface) 72%, transparent);-webkit-backdrop-filter:blur(16px);border:1px solid var(--border-strong);border-radius:var(--radius-md);box-shadow:var(--shadow-md);padding:18px 20px;animation:6s ease-in-out infinite floaty;position:absolute}@keyframes floaty{0%,to{transform:translateY(0)}50%{transform:translateY(-14px)}}@media (prefers-reduced-motion:reduce){.float-card,.hero-orbit-ring{animation:none}}.float-card-head{justify-content:space-between;align-items:center;gap:10px;margin-bottom:10px;font-size:14px;font-weight:700;display:flex}.float-card-head svg{width:16px;height:16px;color:var(--accent-2)}.card-python{width:250px;animation-delay:0s;top:4%;left:4%}.card-robotics{width:190px;animation-delay:1.4s;top:2%;right:0}.card-ai{width:200px;animation-delay:.8s;bottom:30%;right:-2%}.card-progress{width:250px;animation-delay:2.2s;bottom:2%;left:10%}.code-block{background:var(--code-bg);font-family:var(--font-mono);color:#d7dae6;white-space:pre;border-radius:10px;margin:0;padding:12px 14px;font-size:12.5px;line-height:1.6;overflow-x:auto}.tok-kw{color:#c792ea}.tok-fn{color:#82aaff}.tok-str{color:#c3e88d}.tok-num{color:#f78c6c}.chip-list{flex-wrap:wrap;gap:6px;display:flex}.chip-list li{background:var(--surface-2);border:1px solid var(--border);color:var(--text-secondary);border-radius:999px;padding:5px 10px;font-size:12.5px}.progress-percent{color:var(--accent-2)}.progress-track{background:var(--surface-2);border-radius:999px;height:8px;overflow:hidden}.progress-fill{background:var(--accent-grad);height:100%;transition:width 1.2s var(--ease);border-radius:999px}.path-track{flex-wrap:wrap;justify-content:center;align-items:stretch;gap:8px;display:flex}.path-stage{flex-direction:column;align-items:center;gap:12px;width:168px;display:flex}.path-stage-age{font-family:var(--font-mono);color:var(--accent-2);font-size:14px;font-weight:700}.path-stage-card{border-radius:var(--radius-md);background:var(--surface);border:1px solid var(--border);text-align:center;width:100%;transition:transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);flex-direction:column;align-items:center;gap:12px;padding:26px 16px;display:flex}.path-stage-card svg{width:26px;height:26px;color:var(--accent)}.path-stage-card h3{font-size:15px;font-weight:700}.path-stage-card:hover{box-shadow:var(--glow-accent);border-color:var(--accent);transform:translateY(-8px)}.path-stage-final{background:var(--accent-grad);border-color:#0000}.path-stage-final svg,.path-stage-final h3{color:#fff}.path-arrow{color:var(--text-tertiary);align-items:center;display:flex}.path-arrow svg{width:20px;height:20px}@media (max-width:900px){.path-track{flex-direction:column;align-items:center}.path-stage{flex-direction:row;justify-content:flex-start;width:100%;max-width:320px}.path-stage-card{text-align:left;flex-direction:row;padding:18px 20px}.path-arrow{transform:rotate(90deg)}}.directions-grid{grid-template-columns:repeat(3,1fr);gap:24px;display:grid}.direction-card{border-radius:var(--radius-lg);background:var(--surface);border:1px solid var(--border);transition:transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s var(--ease);padding:32px 28px;position:relative;overflow:hidden}.direction-card:before{content:"";opacity:0;transition:opacity .35s var(--ease);background:var(--card-accent,var(--accent-grad));position:absolute;inset:0}.direction-card:hover{box-shadow:var(--shadow-md);border-color:var(--border-strong);transform:translateY(-6px)}.direction-icon{background:var(--card-accent,var(--accent-grad));color:#fff;border-radius:14px;width:46px;height:46px;margin-bottom:20px;padding:11px}.direction-card h3{letter-spacing:-.01em;margin-bottom:16px;font-size:21px;font-weight:800}.tag-list{flex-wrap:wrap;gap:8px;display:flex}.tag-list li{background:var(--surface-2);color:var(--text-secondary);border:1px solid var(--border);border-radius:999px;padding:6px 11px;font-size:12.5px;font-weight:600}.dc-1{--card-accent:linear-gradient(135deg,#6d5ef8,#4f8cff)}.dc-2{--card-accent:linear-gradient(135deg,#22d3ee,#4f8cff)}.dc-3{--card-accent:linear-gradient(135deg,#f5b94e,#f97066)}.dc-4{--card-accent:linear-gradient(135deg,#a78bfa,#6d5ef8)}.dc-5{--card-accent:linear-gradient(135deg,#34d399,#22d3ee)}.dc-6{--card-accent:linear-gradient(135deg,#f97066,#f5b94e)}@media (max-width:1100px){.directions-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width:640px){.directions-grid{grid-template-columns:1fr}}.filter-tabs{flex-wrap:wrap;justify-content:center;gap:8px;margin-bottom:48px;display:flex}.filter-tab{background:var(--surface);border:1px solid var(--border);color:var(--text-secondary);transition:all .2s var(--ease);border-radius:999px;padding:11px 20px;font-size:14px;font-weight:600}.filter-tab:hover{color:var(--text-primary);border-color:var(--border-strong)}.filter-tab.active{background:var(--accent-grad);color:#fff;box-shadow:var(--glow-accent);border-color:#0000}.course-grid{grid-template-columns:repeat(3,1fr);gap:24px;display:grid}.course-card{border-radius:var(--radius-lg);background:var(--surface);border:1px solid var(--border);transition:transform .3s var(--ease), box-shadow .3s var(--ease), opacity .3s var(--ease);flex-direction:column;gap:14px;padding:28px;display:flex}.course-card:hover{box-shadow:var(--shadow-md);transform:translateY(-5px)}.course-card.filtered-out{display:none}.course-tag{color:#fff;border-radius:999px;align-self:flex-start;padding:5px 12px;font-size:12px;font-weight:700;display:inline-flex}.ct-scratch{background:linear-gradient(135deg,#f5b94e,#f97066)}.ct-python{background:linear-gradient(135deg,#4f8cff,#22d3ee)}.ct-robotics{background:linear-gradient(135deg,#f97066,#f5b94e)}.ct-web{background:linear-gradient(135deg,#6d5ef8,#4f8cff)}.ct-ai{background:linear-gradient(135deg,#a78bfa,#6d5ef8)}.ct-game{background:linear-gradient(135deg,#34d399,#22d3ee)}.ct-algo{background:linear-gradient(135deg,#6d5ef8,#4f8cff)}.course-card h3{font-size:21px;font-weight:800}.course-meta{flex-direction:column;gap:8px;display:flex}.course-meta span{color:var(--text-secondary);align-items:center;gap:8px;font-size:13.5px;display:flex}.course-meta svg{width:15px;height:15px;color:var(--text-tertiary);flex-shrink:0}.course-level{color:var(--accent-2);text-transform:uppercase;letter-spacing:.04em;font-size:12.5px;font-weight:700}.course-btn{align-self:flex-start;margin-top:auto}.filter-empty{text-align:center;color:var(--text-tertiary);margin-top:24px}.course-detail-meta{flex-flow:wrap;gap:24px;margin-bottom:48px}.course-detail-heading{margin-bottom:20px;font-size:21px;font-weight:800}.course-detail-back{margin-top:48px}@media (max-width:1100px){.course-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width:640px){.course-grid{grid-template-columns:1fr}}.children-inner{grid-template-columns:.9fr 1.1fr;align-items:center;gap:48px;display:grid}.children-lead{color:var(--text-secondary);margin-top:20px;font-size:20px}.children-lead-strong{letter-spacing:-.01em;margin-top:10px;font-size:26px;font-weight:800}.children-gallery{grid-template-columns:repeat(3,1fr);gap:16px;display:grid}.example-chip{border-radius:var(--radius-md);background:var(--surface);border:1px solid var(--border);text-align:center;transition:transform .3s var(--ease), box-shadow .3s var(--ease);flex-direction:column;justify-content:center;align-items:center;gap:12px;padding:28px 14px;font-size:14px;font-weight:700;display:flex}.example-chip svg{width:26px;height:26px;color:var(--accent)}.example-chip:hover{box-shadow:var(--glow-accent);transform:translateY(-6px)scale(1.02)}@media (max-width:900px){.children-inner{grid-template-columns:1fr}}@media (max-width:520px){.children-gallery{grid-template-columns:repeat(2,1fr)}}.projects-grid{grid-template-columns:repeat(4,1fr);gap:22px;display:grid}.project-card{border-radius:var(--radius-lg);background:var(--surface);border:1px solid var(--border);transition:transform .3s var(--ease), box-shadow .3s var(--ease);overflow:hidden}.project-card:hover{box-shadow:var(--shadow-md);transform:translateY(-6px)}.project-thumb{justify-content:center;align-items:center;height:150px;display:flex}.project-thumb svg{color:#fff;opacity:.92;width:40px;height:40px}.pt-1{background:linear-gradient(135deg,#34d399,#22d3ee)}.pt-2{background:linear-gradient(135deg,#6d5ef8,#a78bfa)}.pt-3{background:linear-gradient(135deg,#4f8cff,#22d3ee)}.pt-4{background:linear-gradient(135deg,#f97066,#f5b94e)}.project-body{flex-direction:column;gap:10px;padding:20px;display:flex}.project-body h3{font-size:17px;font-weight:800}.project-meta{color:var(--text-tertiary);justify-content:space-between;font-size:12.5px;display:flex}.project-tech{color:var(--accent-2);font-weight:700}.project-body p{color:var(--text-secondary);font-size:13.5px}@media (max-width:1100px){.projects-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width:520px){.projects-grid{grid-template-columns:1fr}}.teacher-section{padding-top:40px}.teacher-panel{border-radius:var(--radius-xl);color:#f3f4f8;background:linear-gradient(160deg,#191233 0%,#101226 55%,#0a1f2e 100%);border:1px solid #ffffff14;padding:80px 60px;position:relative;overflow:hidden}.teacher-panel:before{content:"";background:var(--accent);opacity:.25;filter:blur(120px);border-radius:50%;width:500px;height:500px;position:absolute;top:-200px;right:-100px}.light-on-dark p{color:#f3f4f8b8}.light-on-dark h2{color:#fff}.teacher-steps{z-index:1;flex-wrap:wrap;justify-content:center;align-items:center;gap:6px;margin:56px 0;display:flex;position:relative}.teacher-step{text-align:center;flex-direction:column;align-items:center;gap:14px;width:168px;display:flex}.teacher-step-num{background:var(--accent-grad);color:#fff;border-radius:50%;justify-content:center;align-items:center;width:46px;height:46px;font-size:18px;font-weight:800;display:flex;box-shadow:0 0 0 6px #6d5ef81f}.teacher-step p{color:#f3f4f8e0;font-size:14.5px;font-weight:600}.teacher-step-line{background:#ffffff2e;width:40px;height:1px;margin-top:-50px}.teacher-cta-row{z-index:1;justify-content:center;display:flex;position:relative}@media (max-width:900px){.teacher-panel{padding:56px 26px}.teacher-steps{flex-direction:column}.teacher-step-line{display:none}}.aitutor-inner{grid-template-columns:.8fr 1.2fr;align-items:start;gap:56px;display:grid}.strong-line{margin-top:6px;font-size:22px;font-weight:800;display:inline-block}.chat-mock{flex-direction:column;gap:18px;display:flex}.chat-bubble{gap:14px;max-width:560px;display:flex}.chat-ai{flex-direction:row-reverse;margin-left:auto}.chat-avatar{background:var(--surface-2);border:1px solid var(--border);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:38px;height:38px;display:flex}.chat-avatar svg{width:18px;height:18px;color:var(--text-secondary)}.chat-avatar-ai{background:var(--accent-grad);border-color:#0000}.chat-avatar-ai svg{color:#fff}.chat-content{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);flex-direction:column;gap:10px;padding:18px 20px;display:flex}.chat-ai .chat-content{background:color-mix(in srgb, var(--accent) 8%, var(--surface));border-color:color-mix(in srgb, var(--accent) 30%, var(--border))}.chat-content p{font-size:15px}.chat-content code{font-family:var(--font-mono);background:var(--surface-2);border-radius:5px;padding:2px 6px;font-size:13.5px}.code-block-error{border:1px solid color-mix(in srgb, var(--danger) 45%, transparent);margin-top:4px}@media (max-width:980px){.aitutor-inner{grid-template-columns:1fr}.chat-bubble,.chat-ai{max-width:100%}}.parents-inner{grid-template-columns:.8fr 1.2fr;align-items:center;gap:56px;display:grid}.parent-dashboard-card{border-radius:var(--radius-xl);background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow-sm);flex-wrap:wrap;align-items:center;gap:48px;padding:44px;display:flex}.parent-progress-ring{flex-shrink:0;width:140px;height:140px;position:relative}.ring-svg{width:100%;height:100%;transform:rotate(-90deg)}.ring-track{fill:none;stroke:var(--surface-2);stroke-width:10px}.ring-fill{fill:none;stroke:var(--accent);stroke-width:10px;stroke-linecap:round;stroke-dasharray:326.7;stroke-dashoffset:calc(326.7 - (326.7 * var(--ring-progress,0)) / 100);transition:stroke-dashoffset 1.4s var(--ease)}.ring-label{flex-direction:column;justify-content:center;align-items:center;display:flex;position:absolute;inset:0}.ring-label strong{font-size:26px;font-weight:800}.ring-label span{color:var(--text-tertiary);font-size:12px}.parent-stats{flex:1;grid-template-columns:1fr 1fr;gap:24px 40px;min-width:260px;display:grid}.parent-stat{flex-direction:column;gap:6px;display:flex}.parent-stat-label{color:var(--text-tertiary);text-transform:uppercase;letter-spacing:.04em;font-size:12.5px;font-weight:700}.parent-stat-value{font-size:19px;font-weight:800}@media (max-width:980px){.parents-inner{grid-template-columns:1fr}}@media (max-width:560px){.parent-dashboard-card{text-align:center;flex-direction:column}.parent-stats{grid-template-columns:1fr 1fr}}.dashboard-mock{border-radius:var(--radius-xl);border:1px solid var(--border);box-shadow:var(--shadow-lg);background:var(--surface);grid-template-columns:240px 1fr;display:grid;overflow:hidden}.dashboard-sidebar{background:var(--surface-2);flex-direction:column;gap:4px;padding:28px 16px;display:flex}.dashboard-sidebar-item{color:var(--text-secondary);border-radius:10px;align-items:center;gap:12px;padding:12px 14px;font-size:14px;font-weight:600;display:flex}.dashboard-sidebar-item svg{width:17px;height:17px}.dashboard-sidebar-item.active{background:var(--accent-grad);color:#fff}.dashboard-main{padding:40px}.dashboard-main-head{justify-content:space-between;align-items:center;margin-bottom:16px;display:flex}.dashboard-main-head h3{font-size:22px;font-weight:800}.dashboard-percent{font-family:var(--font-mono);color:var(--accent-2);font-weight:700}.dashboard-progress{height:10px;margin-bottom:32px}.dashboard-lesson-card{background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-md);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;padding:22px 26px;display:flex}.dashboard-lesson-num{color:var(--text-tertiary);margin-bottom:4px;font-size:12.5px;display:block}.dashboard-lesson-card strong{font-size:18px}@media (max-width:760px){.dashboard-mock{grid-template-columns:1fr}.dashboard-sidebar{flex-direction:row;overflow-x:auto}.dashboard-main{padding:26px}}.stats-section{padding:90px 0}.stats-grid{text-align:center;grid-template-columns:repeat(4,1fr);gap:24px;display:grid}.stat-item{border-radius:var(--radius-lg);background:var(--surface);border:1px solid var(--border);flex-direction:column;gap:8px;padding:32px 16px;display:flex}.stat-number{background:var(--accent-grad);color:#0000;letter-spacing:-.02em;-webkit-background-clip:text;background-clip:text;font-size:clamp(38px,4vw,56px);font-weight:900}.stat-label{color:var(--text-secondary);font-size:15px;font-weight:600}@media (max-width:760px){.stats-grid{grid-template-columns:1fr 1fr}}.whyus-grid{grid-template-columns:repeat(4,1fr);gap:18px;display:grid}.why-card{border-radius:var(--radius-md);background:var(--surface);border:1px solid var(--border);transition:transform .3s var(--ease), border-color .3s var(--ease);align-items:center;gap:14px;padding:22px;font-size:14.5px;font-weight:600;display:flex}.why-card:hover{border-color:var(--accent);transform:translateY(-4px)}.why-card svg{width:22px;height:22px;color:var(--accent);flex-shrink:0}@media (max-width:1100px){.whyus-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width:520px){.whyus-grid{grid-template-columns:1fr}}.philosophy-section{padding:60px 0 140px}.philosophy-text{text-align:center;letter-spacing:-.02em;max-width:980px;margin:0 auto;font-size:clamp(26px,3.4vw,44px);font-weight:800;line-height:1.35}.final-cta-section{padding:40px 0 140px}.final-cta-inner{text-align:center;border-radius:var(--radius-xl);background:var(--accent-grad);padding:90px 40px;position:relative;overflow:hidden}.final-cta-inner h2{color:#fff;letter-spacing:-.02em;margin-bottom:40px;font-size:clamp(34px,4.2vw,58px);font-weight:900}.final-cta-row{flex-wrap:wrap;justify-content:center;gap:14px;display:flex}.final-cta-inner .btn-primary{color:#17182a;box-shadow:none;background:#fff}.final-cta-inner .btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 40px #00000040}.final-cta-inner .btn-secondary{color:#fff;background:#ffffff24;border-color:#ffffff59}.final-cta-inner .btn-secondary:hover{background:#ffffff38}.final-cta-inner .btn-ghost{color:#fff;border-color:#ffffff59}.final-cta-inner .btn-ghost:hover{background:#ffffff1a}.site-footer{border-top:1px solid var(--border);background:var(--surface);padding:80px 0 0}.footer-inner{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:56px;display:grid}.footer-brand p{color:var(--text-secondary);max-width:280px;margin:16px 0 20px;font-size:14px}.footer-socials{gap:10px;display:flex}.footer-socials a,.footer-socials button{background:var(--surface-2);width:36px;height:36px;color:inherit;cursor:pointer;transition:background .2s var(--ease);border:0;border-radius:50%;justify-content:center;align-items:center;padding:0;display:flex}.footer-socials a:hover,.footer-socials button:hover{background:var(--accent-grad);color:#fff}.footer-socials svg{width:16px;height:16px}.footer-col h4{text-transform:uppercase;letter-spacing:.06em;color:var(--text-tertiary);margin-bottom:18px;font-size:13px}.footer-col{flex-direction:column;gap:12px;display:flex}.footer-col a{color:var(--text-secondary);transition:color .2s var(--ease);font-size:14.5px}.footer-col a:hover{color:var(--text-primary)}.footer-lang-switch{gap:8px;display:flex}.footer-lang-switch .lang-btn{background:var(--surface-2);border:1px solid var(--border)}.footer-bottom{border-top:1px solid var(--border);color:var(--text-tertiary);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;padding:24px 40px;font-size:13px;display:flex}@media (max-width:900px){.footer-inner{grid-template-columns:1fr 1fr}}@media (max-width:560px){.footer-inner{grid-template-columns:1fr}.footer-bottom{flex-direction:column;align-items:flex-start}}@media (max-width:1100px){.container{padding:0 28px}.section{padding:90px 0}.hero-inner{grid-template-columns:1fr}.hero-visual{height:420px;margin-top:20px}.hero{padding-top:60px}}@media (max-width:760px){:root{--container-max:100%}.container{padding:0 20px}.section{padding:72px 0}.section-header{margin-bottom:44px}.hero-cta-row .btn{width:100%}.hero-trust{gap:16px 22px}.hero-visual{height:380px}.float-card{padding:14px 16px}.card-python{width:200px}.card-robotics{width:150px}.card-ai{width:160px}.card-progress{width:200px}.final-cta-inner{padding:56px 24px}.final-cta-row .btn{width:100%}}@media (max-width:480px){.hero-title{font-size:clamp(34px,9vw,44px)}.header-inner{padding:8px 8px 8px 16px}.lang-switch .lang-btn{padding:6px 8px;font-size:11px}.hero-visual{height:340px}.card-robotics,.card-ai{display:none}.card-python{width:60%;top:0;left:0}.card-progress{width:70%;bottom:0;left:20%}}.placeholder-section{align-items:center;min-height:70vh;padding:180px 0 140px;display:flex}.placeholder-card{border-radius:var(--radius-xl);background:var(--surface);border:1px solid var(--border);max-width:480px;box-shadow:var(--shadow-md);text-align:center;margin:0 auto;padding:48px}.placeholder-card .eyebrow{margin-bottom:12px;display:block}.placeholder-card h1{letter-spacing:-.02em;margin-bottom:14px;font-size:clamp(28px,3vw,36px);font-weight:800}.placeholder-card p{color:var(--text-secondary);margin-bottom:28px;font-size:15.5px}.placeholder-form{text-align:left;flex-direction:column;gap:14px;margin-bottom:24px;display:flex}.placeholder-form label{color:var(--text-secondary);margin-bottom:6px;font-size:13px;font-weight:600;display:block}.placeholder-form input{border:1px solid var(--border);background:var(--surface-2);width:100%;color:var(--text-primary);font:inherit;transition:border-color .2s var(--ease);border-radius:12px;padding:12px 16px;font-size:14.5px}.placeholder-form input:focus-visible{border-color:var(--accent);outline:none}.placeholder-form select{border:1px solid var(--border);background:var(--surface-2);width:100%;color:var(--text-primary);font:inherit;transition:border-color .2s var(--ease);appearance:none;cursor:pointer;border-radius:12px;padding:12px 16px;font-size:14.5px}.placeholder-form select:focus-visible{border-color:var(--accent);outline:none}.placeholder-form .btn{width:100%;margin-top:8px}.placeholder-form .btn[disabled]{opacity:.6;pointer-events:none}.password-input-wrap{width:100%;display:block;position:relative}.password-input-wrap input{width:100%;padding-right:44px!important}.password-toggle-btn{width:38px;height:38px;color:var(--text-tertiary);cursor:pointer;transition:color .2s var(--ease), background .2s var(--ease);background:0 0;border:0;border-radius:8px;justify-content:center;align-items:center;padding:0;display:flex;position:absolute;top:50%;right:4px;transform:translateY(-50%)}.password-toggle-btn:hover{color:var(--text-primary);background:var(--surface-2)}.password-toggle-btn:focus-visible{outline:2px solid var(--accent);outline-offset:1px}.auth-hint{color:var(--text-tertiary);font-size:12px;font-weight:500}.auth-error{color:var(--danger);background:color-mix(in srgb, var(--danger) 12%, transparent);border:1px solid color-mix(in srgb, var(--danger) 30%, transparent);border-radius:10px;margin:2px 0 0;padding:10px 14px;font-size:13.5px}.placeholder-links{color:var(--text-secondary);flex-direction:column;gap:10px;font-size:14px;display:flex}.placeholder-links a{color:var(--accent-2);font-weight:600}.placeholder-links a:hover{text-decoration:underline}.header-user-name{color:var(--text-primary);white-space:nowrap;text-overflow:ellipsis;max-width:140px;padding:0 4px;font-size:14px;font-weight:700;overflow:hidden}.header-user-name:hover{color:var(--accent-2)}.student-dash-title{letter-spacing:-.02em;margin:8px 0 28px;font-size:clamp(26px,3vw,34px);font-weight:800}.student-dash-head{flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:16px;margin:40px 0 20px;display:flex}.student-dash-head h2{font-size:20px;font-weight:800}.student-viewall{color:var(--accent-2);white-space:nowrap;font-size:14px;font-weight:600}.student-viewall:hover{text-decoration:underline}.student-overall{border:1px solid var(--border);border-radius:var(--radius-md);background:var(--surface);flex-direction:column;gap:14px;max-width:620px;padding:20px 22px;display:flex}.student-overall>span{color:var(--text-secondary);font-size:13px;font-weight:600}.student-empty{flex-direction:column;align-items:flex-start;gap:18px;padding:24px 0;display:flex}.student-card-desc{color:var(--text-secondary);margin:-4px 0 4px;font-size:14px}.course-tag-neutral{background:var(--surface-3);color:var(--text-secondary)}.lp-progress{flex-direction:column;gap:8px;width:100%;display:flex}.lp-progress-head{color:var(--text-secondary);justify-content:space-between;font-size:12.5px;font-weight:600;display:flex}.learn-modules{flex-direction:column;gap:22px;margin-top:32px;display:flex}.learn-module h3{margin-bottom:10px;font-size:17px;font-weight:800}.learn-lesson-list{flex-direction:column;gap:6px;list-style:none;display:flex}.learn-lesson-row{border:1px solid var(--border);background:var(--surface);color:var(--text-primary);transition:border-color .15s var(--ease), background .15s var(--ease);border-radius:12px;align-items:center;gap:12px;padding:11px 14px;font-size:14.5px;display:flex}.learn-lesson-row:hover{border-color:var(--border-strong);background:var(--surface-2)}.learn-lesson-row.active{border-color:var(--accent);box-shadow:var(--glow-accent)}.learn-lesson-icon{width:22px;height:22px;color:var(--text-tertiary);flex-shrink:0;justify-content:center;align-items:center;display:inline-flex}.learn-lesson-completed .learn-lesson-icon{color:var(--success)}.learn-lesson-in_progress .learn-lesson-icon{color:var(--accent-2)}.learn-lesson-title{flex:1}.learn-topbar{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:20px;margin-bottom:24px;display:flex}.learn-topbar-progress{flex:1;min-width:200px;max-width:360px}.learn-grid{grid-template-columns:300px 1fr;align-items:start;gap:32px;display:grid}.learn-sidebar{border:1px solid var(--border);border-radius:var(--radius-md);background:var(--surface);padding:18px;position:sticky;top:100px}.learn-sidebar>h2{text-transform:uppercase;letter-spacing:.08em;color:var(--text-tertiary);margin-bottom:12px;font-size:13px}.learn-sidebar-details>summary{cursor:pointer;margin-bottom:10px;font-size:14px;font-weight:700}.learn-sidebar-module{margin-bottom:14px}.learn-sidebar-mtitle{text-transform:uppercase;letter-spacing:.05em;color:var(--text-tertiary);margin-bottom:6px;font-size:12px;font-weight:700;display:block}.learn-sidebar-module ul{flex-direction:column;gap:4px;list-style:none;display:flex}.learn-sidebar .learn-lesson-row{padding:8px 10px;font-size:13.5px}.learn-main{min-width:0}.learn-lesson-heading{letter-spacing:-.02em;font-size:clamp(22px,2.5vw,30px);font-weight:800}.learn-lesson-lead{color:var(--text-secondary);margin:8px 0 24px}.learn-content,.learn-assignments,.learn-complete{margin-bottom:28px}.learn-content h3,.learn-assignments h3{text-transform:uppercase;letter-spacing:.05em;color:var(--text-tertiary);margin-bottom:12px;font-size:15px;font-weight:800}.learn-content-body{color:var(--text-primary);font-size:15px;line-height:1.7}.learn-content-para{margin:0 0 14px}.learn-content-heading{letter-spacing:-.01em;margin:20px 0 8px;font-weight:800}h4.learn-content-heading{font-size:19px}h5.learn-content-heading{font-size:16.5px}h6.learn-content-heading{text-transform:uppercase;letter-spacing:.04em;color:var(--text-tertiary);font-size:14.5px}.learn-content-list{margin:0 0 14px;padding-left:22px}.learn-content-list li{margin-bottom:6px}.learn-content-body code{font-family:var(--font-mono);background:var(--surface-2);border-radius:5px;padding:1px 6px;font-size:.92em}.learn-content-code{font-family:var(--font-mono);white-space:pre-wrap;background:var(--code-bg);color:var(--text-primary);border:1px solid var(--border);border-radius:12px;margin:0 0 14px;padding:16px 18px;font-size:13.5px;line-height:1.7;overflow-x:auto}.learn-content-code code{background:0 0;padding:0}.learn-content-img{border-radius:10px;max-width:100%;margin:8px 0}.learn-video{aspect-ratio:16/9;background:#000;border-radius:12px;width:100%;max-width:100%;margin-top:14px;position:relative;overflow:hidden}.learn-video-frame{border:0;width:100%;height:100%;position:absolute;inset:0}.learn-video-error{color:var(--text-secondary);background:var(--surface-2);border:1px solid var(--border);border-radius:10px;margin-top:14px;padding:12px 14px;font-size:14px}.assignment-panel{border:1px solid var(--border);border-radius:var(--radius-md);background:var(--surface);margin-bottom:16px;padding:20px 22px}.assignment-head{justify-content:space-between;align-items:center;gap:12px;margin-bottom:8px;display:flex}.assignment-head h3{text-transform:none;letter-spacing:0;color:var(--text-primary);margin:0;font-size:17px;font-weight:800}.assignment-desc{color:var(--text-secondary);margin-bottom:12px;font-size:14.5px}.assignment-expected{color:var(--text-secondary);margin-bottom:12px;font-size:13.5px}.assignment-expected code{font-family:var(--font-mono);background:var(--surface-2);border-radius:6px;padding:2px 6px}.assignment-label{color:var(--text-secondary);margin-bottom:6px;font-size:13px;font-weight:600;display:block}.assignment-input{border:1px solid var(--border);background:var(--surface-2);width:100%;color:var(--text-primary);font:inherit;resize:vertical;transition:border-color .2s var(--ease);border-radius:12px;padding:12px 14px;font-size:14px}.assignment-input:focus-visible{border-color:var(--accent);outline:none}.assignment-input:disabled{opacity:.7}.assignment-code{font-family:var(--font-mono);font-size:13px;line-height:1.6}.assignment-actions{flex-wrap:wrap;gap:12px;margin-top:14px;display:flex}.assignment-notice{color:var(--success);align-items:center;gap:8px;margin-top:10px;font-size:13.5px;font-weight:600;display:flex}.assignment-notice svg{width:16px;height:16px}.assignment-hint{color:var(--text-tertiary);margin-top:8px;font-size:13px}.learn-complete{flex-direction:column;align-items:flex-start;gap:10px;display:flex}.learn-nav-bottom{margin-top:8px}.submission-badge{white-space:nowrap;border-radius:999px;padding:4px 10px;font-size:12px;font-weight:700}.sb-draft{background:var(--surface-3);color:var(--text-secondary)}.sb-submitted{background:color-mix(in srgb, var(--accent-2) 16%, transparent);color:var(--accent-2)}.sb-checking{background:color-mix(in srgb, var(--accent-3) 18%, transparent);color:var(--accent-3)}.sb-passed{background:color-mix(in srgb, var(--success) 16%, transparent);color:var(--success)}.sb-failed{background:color-mix(in srgb, var(--danger) 14%, transparent);color:var(--danger)}.course-detail-cta{flex-direction:column;align-items:flex-start;gap:12px;margin:8px 0 32px;display:flex}@media (max-width:900px){.learn-grid{grid-template-columns:1fr}.learn-sidebar{position:static}}.teacher-cards{grid-template-columns:repeat(4,1fr);gap:16px;margin:24px 0 8px;display:grid}.teacher-card-link{display:block}.teacher-stat{border:1px solid var(--border);border-radius:var(--radius-md);background:var(--surface);flex-direction:column;gap:6px;height:100%;padding:20px 22px;display:flex}.teacher-stat-accent{border-color:color-mix(in srgb, var(--accent) 40%, transparent);box-shadow:var(--glow-accent)}.teacher-stat-value{letter-spacing:-.02em;font-size:30px;font-weight:800}.teacher-stat-label{color:var(--text-secondary);font-size:13px;font-weight:600}.teacher-meta{color:var(--text-secondary);margin:6px 0;font-size:13.5px}.teacher-section-title{text-transform:uppercase;letter-spacing:.05em;color:var(--text-tertiary);margin:32px 0 12px;font-size:15px;font-weight:800}.teacher-muted{color:var(--text-tertiary);font-size:13px}.teacher-pending-badge{background:color-mix(in srgb, var(--accent-2) 16%, transparent);min-width:22px;height:22px;color:var(--accent-2);border-radius:999px;justify-content:center;align-items:center;padding:0 6px;font-size:12px;font-weight:700;display:inline-flex}.teacher-table-wrap{border:1px solid var(--border);border-radius:var(--radius-md);overflow-x:auto}.teacher-table{border-collapse:collapse;width:100%;font-size:14px}.teacher-table thead th{text-align:left;text-transform:uppercase;letter-spacing:.04em;color:var(--text-tertiary);border-bottom:1px solid var(--border);background:var(--surface-2);padding:12px 16px;font-size:12px;font-weight:700}.teacher-table tbody td{border-bottom:1px solid var(--border);vertical-align:middle;padding:13px 16px}.teacher-table tbody tr:last-child td{border-bottom:none}.teacher-table tbody tr:hover{background:var(--surface-2)}.teacher-cell-title{font-weight:700}.teacher-cell-progress{min-width:180px}.teacher-row-link{color:var(--accent-2);white-space:nowrap;font-weight:700}.teacher-row-link:hover{text-decoration:underline}.group-status{text-transform:uppercase;letter-spacing:.04em;background:var(--surface-3);color:var(--text-secondary);border-radius:999px;margin-left:8px;padding:2px 8px;font-size:11px;font-weight:700;display:inline-block}.group-status-active{background:color-mix(in srgb, var(--success) 16%, transparent);color:var(--success)}.group-status-completed{background:color-mix(in srgb, var(--accent-2) 16%, transparent);color:var(--accent-2)}.group-status-cancelled{background:color-mix(in srgb, var(--danger) 14%, transparent);color:var(--danger)}.teacher-tabs{flex-wrap:wrap;gap:6px;margin:20px 0 24px;display:flex}.teacher-tab{border:1px solid var(--border);color:var(--text-secondary);background:var(--surface);transition:color .15s var(--ease), background .15s var(--ease), border-color .15s var(--ease);border-radius:999px;padding:8px 14px;font-size:13.5px;font-weight:600}.teacher-tab:hover{color:var(--text-primary);background:var(--surface-2)}.teacher-tab.active{color:#fff;background:var(--accent-grad);border-color:#0000}.teacher-pager{align-items:center;gap:14px;margin-top:20px;display:flex}.teacher-pager-info{color:var(--text-secondary);font-size:13.5px;font-weight:600}.review-grid{grid-template-columns:1fr 1fr;gap:24px;margin:24px 0;display:grid}.review-col{border:1px solid var(--border);border-radius:var(--radius-md);background:var(--surface);min-width:0;padding:20px 22px}.review-col h3{text-transform:uppercase;letter-spacing:.05em;color:var(--text-tertiary);margin:0 0 12px;font-size:14px;font-weight:800}.review-col h3+h3{margin-top:18px}.review-code{max-height:480px}.review-form{border:1px solid var(--border);border-radius:var(--radius-md);background:var(--surface);flex-direction:column;gap:12px;max-width:640px;padding:22px;display:flex}.review-score-row{align-items:center;gap:12px;display:flex}.review-score-row label{color:var(--text-secondary);font-size:13px;font-weight:600}.review-score-input{width:110px}.review-result{border:1px solid var(--border);border-radius:12px;margin:4px 0 12px;padding:12px 14px}.review-result-passed{background:color-mix(in srgb, var(--success) 10%, transparent);border-color:color-mix(in srgb, var(--success) 30%, transparent)}.review-result-failed{background:color-mix(in srgb, var(--danger) 10%, transparent);border-color:color-mix(in srgb, var(--danger) 30%, transparent)}.review-result-head{font-size:14px;font-weight:700}.review-result-score{color:var(--text-secondary);font-weight:600}.review-result-feedback{color:var(--text-primary);white-space:pre-wrap;margin-top:6px;font-size:14px}@media (max-width:900px){.teacher-cards{grid-template-columns:repeat(2,1fr)}.review-grid{grid-template-columns:1fr}}@media (max-width:720px){.teacher-table-wrap{border:none;overflow:visible}.teacher-table,.teacher-table tbody,.teacher-table tr,.teacher-table td{width:100%;display:block}.teacher-table thead{display:none}.teacher-table tr{border:1px solid var(--border);border-radius:var(--radius-md);background:var(--surface);margin-bottom:12px;padding:6px 4px}.teacher-table tbody td{border-bottom:none;justify-content:space-between;gap:12px;padding:8px 14px;display:flex}.teacher-table tbody td:before{content:attr(data-label);text-transform:uppercase;letter-spacing:.04em;color:var(--text-tertiary);font-size:12px;font-weight:700}.teacher-table tbody td:empty{display:none}.teacher-cell-progress{min-width:0}}@media (max-width:460px){.teacher-cards{grid-template-columns:1fr}}.family-badges{flex-wrap:wrap;gap:8px;margin:6px 0 4px;display:flex}.family-activity{flex-direction:column;gap:6px;list-style:none;display:flex}.family-activity-row{border:1px solid var(--border);border-left:3px solid var(--border-strong);background:var(--surface);border-radius:10px;grid-template-columns:190px 1fr auto;align-items:baseline;gap:14px;padding:11px 14px;font-size:14px;display:grid}.family-activity-lesson_completed{border-left-color:var(--success)}.family-activity-assignment_submitted{border-left-color:var(--accent-2)}.family-activity-assignment_passed{border-left-color:var(--success)}.family-activity-assignment_failed{border-left-color:var(--danger)}.family-activity-label{font-weight:700}.family-activity-detail{color:var(--text-secondary);min-width:0}.family-activity-date{color:var(--text-tertiary);white-space:nowrap;font-size:12.5px}.family-assignments{flex-direction:column;gap:14px;display:flex}@media (max-width:640px){.family-activity-row{grid-template-columns:1fr;gap:4px}.family-activity-date{order:3}}.admin-nav{border-bottom:1px solid var(--border);flex-wrap:wrap;gap:6px;margin:14px 0 28px;padding-bottom:12px;display:flex}.admin-nav-tab{color:var(--text-secondary);border:1px solid var(--border);background:var(--surface);transition:color .15s var(--ease), background .15s var(--ease), border-color .15s var(--ease);border-radius:999px;padding:8px 14px;font-size:13.5px;font-weight:600}.admin-nav-tab:hover{color:var(--text-primary);background:var(--surface-2)}.admin-nav-tab.active{color:#fff;background:var(--accent-grad);border-color:#0000}.admin-cards{margin-bottom:16px}.admin-role-breakdown{flex-wrap:wrap;gap:10px;margin-bottom:8px;display:flex}.admin-role-pill{color:var(--text-secondary);background:var(--surface-2);border:1px solid var(--border);border-radius:999px;padding:5px 12px;font-size:13px}.admin-section{margin-top:8px}.admin-section-head{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin:22px 0 14px;display:flex}.admin-section-head h2{font-size:18px;font-weight:800}.admin-filters,.admin-form{flex-wrap:wrap;align-items:flex-end;gap:14px;margin-bottom:18px;display:flex}.admin-form{border:1px solid var(--border);border-radius:var(--radius-md);background:var(--surface);align-items:stretch;padding:18px 20px}.admin-field{color:var(--text-secondary);flex-direction:column;gap:5px;min-width:160px;font-size:13px;font-weight:600;display:flex}.admin-field-grow{flex:1;min-width:220px}.admin-field input[type=text],.admin-field input[type=password],.admin-field input[type=number],.admin-field select,.admin-field textarea,.admin-inline-form input{border:1px solid var(--border);background:var(--surface-2);color:var(--text-primary);font:inherit;border-radius:10px;padding:9px 12px;font-size:14px}.admin-field input[type=checkbox]{align-self:flex-start;width:18px;height:18px}.admin-field textarea{resize:vertical;min-height:64px;font-family:var(--font-mono);font-size:13px}.admin-form-actions{gap:10px;width:100%;margin-top:6px;display:flex}.admin-inline-form{gap:10px;margin-bottom:12px;display:flex}.admin-breadcrumb{flex-wrap:wrap;align-items:center;gap:4px;margin-bottom:16px;font-size:14px;display:flex}.admin-breadcrumb-sep{color:var(--text-tertiary);margin:0 2px}.admin-link{color:var(--accent-2);white-space:nowrap;font-size:13.5px;font-weight:600}.admin-link:hover{text-decoration:underline}.admin-link:disabled{color:var(--text-primary);cursor:default;font-weight:800;text-decoration:none}.admin-link-strong{font-weight:800}.admin-row-actions{gap:12px;display:flex}.admin-muted{color:var(--text-tertiary)}.admin-role-tag,.admin-action-tag{text-transform:uppercase;letter-spacing:.04em;background:var(--surface-3);color:var(--text-secondary);border-radius:999px;padding:2px 8px;font-size:11px;font-weight:700;display:inline-block}.admin-role-admin{background:color-mix(in srgb, var(--accent) 20%, transparent);color:var(--accent)}.admin-role-teacher{background:color-mix(in srgb, var(--accent-2) 16%, transparent);color:var(--accent-2)}.admin-role-parent{background:color-mix(in srgb, var(--accent-3) 18%, transparent);color:var(--accent-3)}.admin-action-create{background:color-mix(in srgb, var(--success) 16%, transparent);color:var(--success)}.admin-action-update{background:color-mix(in srgb, var(--accent-2) 16%, transparent);color:var(--accent-2)}.admin-action-delete{background:color-mix(in srgb, var(--danger) 14%, transparent);color:var(--danger)}.admin-dialog-backdrop{z-index:900;background:var(--scrim);-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);justify-content:center;align-items:center;padding:20px;display:flex;position:fixed;inset:0}.admin-dialog{background:var(--surface);border:1px solid var(--border-strong);border-radius:var(--radius-md);width:100%;max-width:420px;box-shadow:var(--shadow-lg);padding:24px}.admin-dialog-wide{max-width:560px}.admin-dialog h3{margin-bottom:16px;font-size:17px;font-weight:800}.admin-simple-list{flex-direction:column;gap:6px;max-height:340px;margin:8px 0 16px;list-style:none;display:flex;overflow-y:auto}.admin-simple-list li{border:1px solid var(--border);border-radius:10px;justify-content:space-between;align-items:center;gap:12px;padding:8px 12px;font-size:13.5px;display:flex}.quiz-container{max-width:760px}.quiz-head{margin:12px 0 8px}.quiz-progress-label{color:var(--text-tertiary);font-size:13px;font-weight:700}.quiz-card{border:1px solid var(--border);border-radius:var(--radius-md);background:var(--surface);margin:16px 0;padding:20px}.quiz-question-text{white-space:pre-wrap;font-size:16px;font-weight:700;line-height:1.5}.quiz-question-hint{color:var(--text-tertiary);margin-top:4px;font-size:12.5px}.quiz-options{flex-direction:column;gap:10px;margin-top:16px;list-style:none;display:flex}.quiz-option{cursor:pointer;border:1px solid var(--border);border-radius:12px;align-items:center;gap:12px;padding:12px 14px;font-size:14.5px;transition:border-color .15s,background .15s;display:flex}.quiz-option:hover{border-color:var(--border-strong)}.quiz-option-checked{border-color:var(--accent);background:color-mix(in srgb, var(--accent) 8%, transparent)}.quiz-nav{justify-content:space-between;gap:12px;margin-top:8px;display:flex}.quiz-summary{color:var(--text-secondary);flex-wrap:wrap;gap:8px 16px;margin:6px 0 10px;font-size:12.5px;display:flex}.quiz-history{flex-direction:column;gap:6px;margin-top:12px;font-size:13px;list-style:none;display:flex}.quiz-history li{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.quiz-badge{border-radius:999px;padding:2px 10px;font-size:12px;font-weight:800}.quiz-badge-pass{background:color-mix(in srgb, var(--success) 16%, transparent);color:var(--success)}.quiz-mark-ok{color:var(--success);font-weight:800}.quiz-mark-bad{color:var(--danger);font-weight:800}.quiz-result-banner{text-align:center;border-radius:var(--radius-md);border:1px solid var(--border);margin:12px 0 20px;padding:28px 20px}.quiz-result-pass{background:color-mix(in srgb, var(--success) 12%, transparent);border-color:var(--success)}.quiz-result-fail{background:color-mix(in srgb, var(--danger) 10%, transparent);border-color:var(--danger)}.quiz-result-heading{text-transform:uppercase;letter-spacing:.06em;color:var(--text-tertiary);font-size:13px;font-weight:800}.quiz-result-score{margin-top:6px;font-size:34px;font-weight:900}.quiz-result-percent{color:var(--text-secondary);font-size:18px;font-weight:800}.quiz-result-verdict{margin-top:8px;font-size:15px;font-weight:800}.quiz-result-threshold{color:var(--text-tertiary);margin-top:4px;font-size:12.5px}.quiz-result-actions{flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:20px;display:flex}.quiz-attempts-left{color:var(--text-tertiary);font-size:12.5px}.quiz-review-title{margin-bottom:12px;font-size:16px;font-weight:800}.quiz-review-list{flex-direction:column;gap:12px;list-style:none;display:flex}.quiz-review-card{border:1px solid var(--border);border-radius:var(--radius-md);background:var(--surface);padding:16px}.quiz-review-q{white-space:pre-wrap;font-size:14px;font-weight:600}.quiz-review-mark{text-transform:uppercase;border-radius:999px;padding:2px 8px;font-size:11px;font-weight:800}.quiz-review-mark.quiz-mark-ok{background:color-mix(in srgb, var(--success) 16%, transparent)}.quiz-review-mark.quiz-mark-bad{background:color-mix(in srgb, var(--danger) 14%, transparent)}.quiz-review-points{color:var(--text-tertiary);font-size:12px;font-weight:700}.quiz-review-options{flex-direction:column;gap:6px;margin-top:10px;list-style:none;display:flex}.quiz-review-opt{border:1px solid var(--border);border-radius:10px;flex-wrap:wrap;align-items:center;gap:8px;padding:8px 12px;font-size:13.5px;display:flex}.quiz-review-opt-selected{border-color:var(--border-strong)}.quiz-review-opt-correct{background:color-mix(in srgb, var(--success) 10%, transparent);border-color:var(--success)}.quiz-review-opt-wrong{background:color-mix(in srgb, var(--danger) 10%, transparent);border-color:var(--danger)}.quiz-review-tag{text-transform:uppercase;background:var(--surface-3,var(--surface));color:var(--text-secondary);border-radius:999px;padding:1px 6px;font-size:10.5px;font-weight:800}.quiz-review-tag-correct{color:var(--success)}.quiz-review-explanation{color:var(--text-secondary);margin-top:10px;font-size:13px;line-height:1.5}.quiz-admin-list{flex-direction:column;gap:12px;margin-top:12px;list-style:none;display:flex}.quiz-admin-card{border:1px solid var(--border);border-radius:var(--radius-md);padding:14px}.quiz-admin-card-inactive{opacity:.55}.quiz-admin-card-head{color:var(--text-tertiary);flex-wrap:wrap;align-items:center;gap:8px;font-size:12px;font-weight:700;display:flex}.quiz-admin-type{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.04em}.quiz-admin-warn{color:var(--danger);font-weight:800}.quiz-admin-qtext{white-space:pre-wrap;margin:8px 0;font-size:14px;font-weight:600}.quiz-admin-options{flex-direction:column;gap:4px;margin:8px 0;list-style:none;display:flex}.quiz-admin-options li{justify-content:space-between;align-items:center;gap:10px;font-size:13px;display:flex}.quiz-admin-options label{align-items:center;gap:8px;display:flex}.quiz-admin-opt-inactive{opacity:.5}.quiz-admin-card-actions{gap:14px;margin-top:8px;display:flex}.quiz-admin-correct-toggle{white-space:nowrap;align-items:center;gap:6px;font-size:13px;display:flex}.assignment-label-row{justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:6px;display:flex}.code-editor-shell{border:1px solid var(--border);border-radius:var(--radius-md);background:var(--code-bg,var(--surface));overflow:hidden}.code-editor-shell[data-readonly=true]{opacity:.92}.code-editor-shell .assignment-input{border:0;border-radius:0;margin:0;display:block}.code-editor-loading{color:var(--text-tertiary);padding:24px 16px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px}.code-editor-note{color:var(--text-tertiary);border-top:1px solid var(--border);background:var(--surface);padding:6px 12px;font-size:12px}.runner-controls{margin:8px 0 4px}.runner-stdin{margin-top:6px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12.5px}.runner-output{border:1px solid var(--border);border-radius:var(--radius-md);margin-top:12px;overflow:hidden}.runner-output-head{background:var(--surface);border-bottom:1px solid var(--border);color:var(--text-secondary);flex-wrap:wrap;align-items:center;gap:8px;padding:8px 12px;font-size:12px;font-weight:700;display:flex}.runner-badge{background:color-mix(in srgb, var(--text-tertiary) 16%, transparent);color:var(--text-secondary);border-radius:999px;padding:1px 7px;font-size:11px;font-weight:700}.runner-badge-ok{background:color-mix(in srgb, var(--success) 18%, transparent);color:var(--success)}.runner-badge-warn{background:color-mix(in srgb, var(--danger) 16%, transparent);color:var(--danger)}.runner-stream{white-space:pre-wrap;word-break:break-word;background:var(--code-bg,var(--surface));max-height:280px;margin:0;padding:12px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12.5px;line-height:1.5;overflow:auto}.runner-stream-empty{color:var(--text-tertiary)}.runner-stream-err{color:var(--danger);border-top:1px dashed var(--border)}.runner-tests,.runner-history{margin-top:12px;font-size:13px}.runner-tests summary,.runner-history summary{cursor:pointer;font-weight:700}.runner-tests ul,.runner-history ul{flex-direction:column;gap:8px;margin-top:8px;list-style:none;display:flex}.runner-tests li{border:1px solid var(--border);border-radius:10px;padding:10px}.runner-test-head{justify-content:space-between;align-items:center;gap:10px;display:flex}.runner-history li{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.runner-history-time{color:var(--text-tertiary);margin-left:auto}.runner-status{text-transform:uppercase;border-radius:999px;padding:1px 7px;font-size:11px;font-weight:800}.runner-status-ok{color:var(--success)}.runner-status-error,.runner-status-timeout,.runner-status-runner_error{color:var(--danger)}.runner-io{background:var(--surface);border:1px solid var(--border);white-space:pre-wrap;word-break:break-word;border-radius:8px;max-height:160px;margin:6px 0 0;padding:8px 10px 8px 64px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;position:relative;overflow:auto}.runner-io>span:first-child{text-transform:uppercase;color:var(--text-tertiary);font-size:10px;font-weight:800;position:absolute;top:8px;left:8px}.runner-io-got{border-color:var(--danger)}.runner-grade{border-radius:var(--radius-md);border:1px solid var(--border);margin-top:12px;padding:14px}.runner-grade-pass{background:color-mix(in srgb, var(--success) 12%, transparent);border-color:var(--success)}.runner-grade-fail{background:color-mix(in srgb, var(--danger) 10%, transparent);border-color:var(--danger)}.runner-grade-head{font-size:14px;font-weight:800}.runner-grade-score{color:var(--text-secondary)}.runner-grade-list{flex-direction:column;gap:8px;margin-top:10px;font-size:13px;list-style:none;display:flex}.runner-mark-ok{color:var(--success)}.runner-mark-bad{color:var(--danger)}.runner-hidden-tag{text-transform:uppercase;background:color-mix(in srgb, var(--text-tertiary) 18%, transparent);color:var(--text-secondary);border-radius:999px;margin-left:6px;padding:1px 6px;font-size:10px;font-weight:800}.runner-diff{margin-top:6px}.runner-admin-list{flex-direction:column;gap:10px;margin-top:10px;list-style:none;display:flex}.runner-admin-card{border:1px solid var(--border);border-radius:var(--radius-md);padding:12px}.runner-admin-card-head{flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;display:flex}.runner-admin-actions{gap:12px;margin-left:auto;display:flex}.academy-hero{background:linear-gradient(180deg, color-mix(in srgb, var(--accent) 8%, transparent), transparent)}.academy-hero-title{max-width:20ch;margin:10px 0;font-size:clamp(1.8rem,4vw,2.8rem);font-weight:800;line-height:1.15}.academy-hero-lead{color:var(--text-secondary);max-width:60ch;font-size:1.05rem;line-height:1.6}.academy-hero-actions{flex-wrap:wrap;align-items:center;gap:12px;margin-top:20px;display:flex}.academy-note{color:var(--text-tertiary);margin-top:12px;font-size:.9rem}.academy-tracks{grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;margin-top:20px;display:grid}.academy-track-card{border:1px solid var(--border);border-radius:var(--radius-md);background:var(--surface);padding:18px;position:relative}.academy-track-card h3{margin:8px 0 6px;font-size:1rem;font-weight:700}.academy-track-card p{color:var(--text-secondary);font-size:.9rem;line-height:1.5}.academy-track-num{background:color-mix(in srgb, var(--accent) 16%, transparent);min-width:26px;height:26px;color:var(--accent);border-radius:999px;justify-content:center;align-items:center;padding:0 8px;font-size:.8rem;font-weight:800;display:inline-flex}.academy-benefit-list{grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px;margin:16px 0 24px;list-style:none;display:grid}.academy-benefit-list li{align-items:center;gap:10px;font-size:.95rem;display:flex}.academy-benefit-icon{color:var(--accent);display:inline-flex}.academy-course-row-head{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;display:flex}.academy-cert-tag{color:var(--success,#16a34a);align-items:center;font-size:.8rem;font-weight:700;display:inline-flex}.cert-meta{gap:20px;margin:4px 0 10px;display:flex}.cert-meta div{flex-direction:column;gap:2px;display:flex}.cert-meta dt{text-transform:uppercase;letter-spacing:.04em;color:var(--text-tertiary);font-size:.7rem}.cert-meta dd{color:var(--text-primary);font-size:.85rem;font-weight:600}.cert-cta{flex-wrap:wrap;align-items:center;gap:10px;margin-top:8px;display:flex}.cert-cta-hint{color:var(--text-tertiary);margin-top:8px;font-size:.8rem}.cert-badge-revoked{background:color-mix(in srgb, var(--danger) 16%, transparent);color:var(--danger)}.admin-link-danger{color:var(--danger)}.admin-row-actions{white-space:nowrap;gap:12px;display:flex}.cert-verify-wrap{max-width:640px}.cert-verify-card{border:1px solid var(--border);background:var(--surface);text-align:center;border-radius:16px;margin:20px 0;padding:28px}.cert-verify-card h1{margin:12px 0 18px;font-size:1.4rem}.cert-verify-mark{color:#fff;border-radius:999px;justify-content:center;align-items:center;width:56px;height:56px;margin:0 auto;font-size:1.6rem;font-weight:800;display:flex}.cert-verify-valid{border-color:color-mix(in srgb, var(--success) 45%, var(--border))}.cert-verify-valid .cert-verify-mark{background:var(--success)}.cert-verify-revoked .cert-verify-mark{background:var(--danger)}.cert-verify-invalid .cert-verify-mark{background:var(--text-tertiary)}.cert-verify-fields{text-align:left;gap:12px;margin-top:8px;display:grid}.cert-verify-fields div{border-bottom:1px solid var(--border);flex-direction:column;gap:2px;padding-bottom:8px;display:flex}.cert-verify-fields dt{text-transform:uppercase;letter-spacing:.04em;color:var(--text-tertiary);font-size:.72rem}.cert-verify-fields dd{color:var(--text-primary);font-size:.95rem;font-weight:600}.student-dash-links{flex-wrap:wrap;gap:16px;display:flex}.page-hero{padding:128px 0 56px}.page-hero .eyebrow{margin-bottom:14px}.page-hero-title{margin:0 0 16px;font-size:clamp(2rem,4vw,3rem);line-height:1.1}.page-hero-lead{max-width:640px;color:var(--text-secondary);font-size:1.05rem}.page-hero-actions{flex-wrap:wrap;align-items:center;gap:16px;margin-top:24px;display:flex}.breadcrumbs{margin-bottom:20px;font-size:.85rem}.breadcrumbs ol{flex-wrap:wrap;align-items:center;gap:6px;margin:0;padding:0;list-style:none;display:flex}.breadcrumbs li{align-items:center;gap:6px;display:inline-flex}.breadcrumbs a{color:var(--text-tertiary);transition:color .2s var(--ease)}.breadcrumbs a:hover{color:var(--text-primary)}.breadcrumbs [aria-current=page]{color:var(--text-secondary);font-weight:600}.breadcrumbs-sep{color:var(--text-tertiary)}.breadcrumbs-bar{padding-top:104px}.breadcrumbs-bar .breadcrumbs{margin-bottom:0}.breadcrumbs-bar+.section{padding-top:32px}.back-link{color:var(--accent);align-items:center;gap:6px;font-weight:600;display:inline-flex}.back-link:hover{text-decoration:underline}.page-back{padding:8px 0 96px}.section-subtitle{margin:0 0 28px;font-size:1.4rem}.direction-hero-icon{background:var(--surface-2);width:60px;height:60px;color:var(--accent);border-radius:16px;justify-content:center;align-items:center;margin-top:28px;display:flex}.direction-hero-icon svg{width:30px;height:30px}.direction-hero-tags{margin-top:20px}.direction-empty{flex-direction:column;align-items:flex-start;gap:14px;display:flex}.direction-all{margin-top:28px}.cert-verify-form{flex-wrap:wrap;gap:10px;max-width:520px;margin-top:24px;display:flex}.cert-verify-form input{border:1px solid var(--border);background:var(--surface);min-width:220px;color:var(--text-primary);font-family:var(--font-jetbrains-mono,monospace);letter-spacing:.04em;border-radius:10px;flex:1;padding:11px 14px}.footer-lang{margin-top:10px}@media (max-width:640px){.page-hero{padding-top:104px}.breadcrumbs-bar{padding-top:92px}}.header-support{background:var(--surface-2);border:1px solid var(--border);width:38px;height:38px;color:var(--text-secondary);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;display:inline-flex;position:relative}.header-support:hover{color:var(--text-primary)}.header-support svg{width:17px;height:17px}.header-support-badge{background:var(--danger);color:#fff;border-radius:999px;justify-content:center;align-items:center;min-width:16px;height:16px;padding:0 3px;font-size:10px;font-weight:800;display:flex;position:absolute;top:-4px;right:-4px}.ask-curator-btn{color:var(--accent);align-items:center;gap:6px;font-size:.85rem;font-weight:600;display:inline-flex}.ask-curator-btn:hover{text-decoration:underline}.ask-curator-btn svg{width:15px;height:15px}.support-inline-actions{flex-wrap:wrap;align-items:center;gap:16px;margin:10px 0 0;display:flex}.learn-lesson-topline{flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:16px;display:flex}.support-layout{grid-template-columns:300px 1fr;align-items:start;gap:20px;margin-top:24px;display:grid}.support-threadlist{border:1px solid var(--border);border-radius:var(--radius-md);background:var(--surface);padding:12px}.support-threadlist ul{flex-direction:column;gap:6px;margin:12px 0 0;padding:0;list-style:none;display:flex}.support-new-btn{width:100%}.support-thread-row{text-align:left;border-radius:var(--radius-sm);background:var(--surface-2);cursor:pointer;border:1px solid #0000;flex-direction:column;gap:3px;width:100%;padding:10px;display:flex}.support-thread-row:hover{border-color:var(--border-strong)}.support-thread-row.active{border-color:var(--accent);background:color-mix(in srgb, var(--accent) 10%, var(--surface-2))}.support-thread-subject{color:var(--text-primary);font-size:.9rem;font-weight:700}.support-thread-sub{color:var(--text-tertiary);text-overflow:ellipsis;white-space:nowrap;font-size:.78rem;overflow:hidden}.support-thread-foot{flex-wrap:wrap;align-items:center;gap:8px;margin-top:2px;display:flex}.support-status{background:var(--surface-3);color:var(--text-secondary);border-radius:999px;padding:2px 8px;font-size:.7rem;font-weight:700}.support-status-waiting_staff{background:color-mix(in srgb, var(--accent-3,#f5b94e) 20%, transparent);color:var(--accent-3,#d98a1c)}.support-status-waiting_user{background:color-mix(in srgb, var(--accent) 18%, transparent);color:var(--accent)}.support-status-closed{opacity:.7}.support-unread-dot{background:var(--danger);color:#fff;border-radius:999px;justify-content:center;align-items:center;min-width:18px;height:18px;padding:0 4px;font-size:11px;font-weight:800;display:inline-flex}.support-assigned-tag{color:var(--text-tertiary);font-size:.7rem}.support-main{border:1px solid var(--border);border-radius:var(--radius-md);background:var(--surface);flex-direction:column;min-height:420px;display:flex}.support-empty-state,.support-newform{padding:28px}.support-empty-state h2,.support-newform h2{margin:0 0 8px;font-size:1.2rem}.support-quick{flex-wrap:wrap;gap:8px;margin-top:16px;display:flex}.support-quick-chip{background:var(--surface-2);border:1px solid var(--border);cursor:pointer;border-radius:999px;padding:8px 14px;font-size:.85rem}.support-quick-chip:hover{border-color:var(--accent)}.support-ctx-hint{color:var(--success);margin:0 0 12px;font-size:.8rem}.support-thread{flex-direction:column;flex:1;padding:0;display:flex}.support-thread-head{border-bottom:1px solid var(--border);justify-content:space-between;align-items:flex-start;gap:12px;padding:18px 20px;display:flex}.support-thread-head h2{margin:0;font-size:1.05rem}.support-messages{flex-direction:column;flex:1;gap:12px;max-height:460px;padding:18px 20px;display:flex;overflow-y:auto}.support-msg{background:var(--surface-2);border-radius:14px;max-width:78%;padding:10px 14px}.support-msg-mine{background:color-mix(in srgb, var(--accent) 16%, var(--surface-2));align-self:flex-end}.support-msg-theirs{align-self:flex-start}.support-msg-internal{background:color-mix(in srgb, var(--accent-3,#f5b94e) 12%, var(--surface-2));border:1px dashed var(--accent-3,#d98a1c);align-self:stretch;max-width:100%}.support-msg p{white-space:pre-wrap;margin:0;font-size:.92rem}.support-msg-meta{color:var(--text-tertiary);align-items:center;gap:8px;margin-bottom:4px;font-size:.72rem;display:flex}.support-msg-internal-tag{color:var(--accent-3,#d98a1c);font-weight:800}.support-msg-system{color:var(--text-tertiary);background:var(--surface-2);border-radius:999px;align-self:center;padding:5px 12px;font-size:.78rem}.support-reopen-hint{color:var(--text-tertiary);padding:0 20px 8px;font-size:.8rem}.support-composer{border-top:1px solid var(--border);gap:10px;padding:14px 20px;display:flex}.support-composer textarea{resize:vertical;border:1px solid var(--border);background:var(--surface);min-height:42px;color:var(--text-primary);font:inherit;border-radius:10px;flex:1;padding:10px 12px}.support-admin-filters{margin-bottom:16px}.support-admin-layout{grid-template-columns:320px 1fr 320px;align-items:start;gap:16px;display:grid}.support-admin-list{border:1px solid var(--border);border-radius:var(--radius-md);background:var(--surface);padding:12px}.support-admin-list ul{flex-direction:column;gap:6px;margin:0;padding:0;list-style:none;display:flex}.support-admin-chat{border:1px solid var(--border);border-radius:var(--radius-md);background:var(--surface);flex-direction:column;min-height:460px;display:flex}.support-admin-chat>.support-thread-head,.support-admin-chat>.support-messages{padding:16px 18px}.support-admin-actions{border-bottom:1px solid var(--border);gap:16px;padding:10px 18px;font-size:.85rem;display:flex}.support-internal-toggle{align-items:center;gap:8px;padding:10px 18px 0;font-size:.85rem;display:flex}.support-context{border:1px solid var(--border);border-radius:var(--radius-md);background:var(--surface);padding:16px;font-size:.85rem;position:sticky;top:90px}.support-context h3{text-transform:uppercase;letter-spacing:.04em;color:var(--text-tertiary);margin:0 0 12px;font-size:.9rem}.support-context h4{color:var(--text-tertiary);margin:0 0 6px;font-size:.8rem}.support-ctx-block{margin-bottom:16px}.support-ctx-block dt{color:var(--text-tertiary);font-size:.72rem}.support-ctx-block dd{margin:0 0 8px;font-weight:600}.support-ctx-course{border-radius:var(--radius-sm);background:var(--surface-2);flex-direction:column;gap:4px;margin-bottom:6px;padding:8px;display:flex}.support-ctx-course.focus{border:1px solid var(--accent)}.support-ctx-course-head{justify-content:space-between;gap:8px;font-weight:600;display:flex}.support-ctx-bar{background:var(--surface-3);border-radius:999px;height:5px;overflow:hidden}.support-ctx-bar span{background:var(--accent-grad,var(--accent));height:100%;display:block}.support-ctx-line{margin:8px 0;line-height:1.5}.support-ctx-ok{color:var(--success);font-weight:600}.support-ctx-warn{color:var(--danger);font-weight:600}@media (max-width:1100px){.support-admin-layout{grid-template-columns:1fr}.support-context{position:static}}@media (max-width:820px){.support-layout{grid-template-columns:1fr}}
