/* ===== HtmlRunner Learn v16 - native site look ===== */
/* Loaded AFTER style.css. Only covers what the site-wide stylesheet does not. */

/* --- Adsense: never overflow --- */
.adsense-banner{max-width:100%;overflow:hidden;display:flex;justify-content:center;min-height:90px}
.google-auto-placed{position:relative!important;max-width:100%;overflow:hidden;display:flex;justify-content:center;min-height:90px}

/* --- Hero stats: one quiet text line --- */
.learn-hero .learn-stats-line{margin-top:22px;font-size:.9rem;color:#64748b;font-weight:500}
.learn-hero .learn-stats-line b{color:#1e3a5f;font-weight:800}

/* --- Hero pill badge --- */
.hero-pill{display:inline-block;padding:6px 16px;border-radius:999px;font-size:.78rem;font-weight:700;letter-spacing:.02em;margin-bottom:18px;background:linear-gradient(135deg,#2563eb,#7c3aed);color:#fff}

/* --- Site-native sections (hub + track pages) --- */
.tool-section{max-width:1050px;margin:0 auto;padding:8px 24px 0}
.tool-section + .tool-section{margin-top:64px}
.tool-section + section{margin-top:64px}
.tool-section + div{margin-top:64px}
.section + div{padding-top:64px}
.tool-section .contents-card{margin-top:0}

/* --- Reading progress bar --- */
.read-progress{position:fixed;top:0;left:0;width:0%;height:3px;background:linear-gradient(90deg,#2563eb,#0ea5e9);z-index:200;transition:width .1s linear}
/* --- Lesson page: sidebar + single content column — enhanced reading --- */
.lesson-wrap{max-width:1200px;margin:0 auto;padding:28px 24px 20px}
.lesson-layout{display:grid;grid-template-columns:290px minmax(0,1fr);gap:44px;align-items:start}
.lesson-side{position:sticky;top:24px;max-height:calc(100vh - 90px);overflow-y:auto;scrollbar-width:thin;scrollbar-color:#cbd5e1 transparent}
.lesson-side::-webkit-scrollbar{width:6px}
.lesson-side::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:3px}
.lesson-main{min-width:0;max-width:780px}
.lesson-crumbs{font-size:.8rem;color:#94a3b8;font-weight:500;margin-bottom:16px}
.lesson-crumbs a{color:#2563eb;text-decoration:none;font-weight:600}
.lesson-crumbs a:hover{text-decoration:underline}
.lesson-kicker{display:flex;align-items:center;gap:12px;margin-bottom:14px;flex-wrap:wrap}
.kicker-pill{display:inline-block;padding:4px 13px;border-radius:999px;color:#fff;font-size:.72rem;font-weight:700;letter-spacing:.04em}
.kicker-meta{font-size:.78rem;font-weight:600;color:#94a3b8}
.read-time{font-size:.74rem;color:#94a3b8;background:#f8fafc;border:1px solid #e2e8f0;padding:3px 8px;border-radius:999px;font-weight:600}
.lesson-main h1{font-size:clamp(1.7rem,4vw,2.15rem);font-weight:800;color:#1a2332;margin:0 0 14px;line-height:1.15;letter-spacing:-.02em;max-width:22ch}
.lesson-main .lesson-lead{font-size:clamp(1rem,2.2vw,1.08rem);color:#475569;line-height:1.7;margin:0 0 28px;max-width:65ch}
.lesson-main h2{font-size:clamp(1.15rem,2.5vw,1.28rem);font-weight:700;color:#1a2332;margin:40px 0 14px;padding-bottom:8px;border-bottom:1px solid #e2e8f0;scroll-margin-top:80px}
.lesson-main h3{font-size:clamp(.95rem,2vw,1rem);font-weight:700;color:#1e3a5f;margin:26px 0 10px;scroll-margin-top:80px}
.lesson-main p{font-size:.96rem;color:#334155;line-height:1.82;margin:0 0 16px;max-width:68ch}
.lesson-main ul,.lesson-main ol{font-size:.93rem;color:#334155;line-height:1.8;margin:0 0 22px;padding-left:20px;max-width:68ch}
.lesson-main ul li,.lesson-main ol li{margin-bottom:7px}
.lesson-main blockquote{border-left:3px solid #2563eb;background:#eff6ff;padding:12px 18px;border-radius:0 10px 10px 0;margin:18px 0;font-size:.92rem;color:#1e40af;line-height:1.7}
.lesson-toc{background:#f8fafc;border:1px solid #e2e8f0;border-radius:12px;padding:14px 18px;margin:0 0 28px}
.lesson-toc-title{font-size:.72rem;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:#64748b;margin-bottom:8px}
.lesson-toc a{display:block;font-size:.84rem;color:#334155;text-decoration:none;padding:4px 0;border-left:2px solid transparent;padding-left:10px;margin-left:-2px}
.lesson-toc a:hover{color:#2563eb;border-left-color:#93c5fd}
.lesson-toc a.active{color:#1e3a5f;font-weight:600;border-left-color:#2563eb;background:#eff6ff}
.contents-toggle{display:none;width:100%;background:#fff;border:1px solid #e2e8f0;border-radius:12px;padding:12px 16px;font-size:.88rem;font-weight:700;color:#1e3a5f;cursor:pointer;align-items:center;justify-content:space-between;margin-bottom:12px}
.contents-toggle .chev{transition:transform .2s}
.contents-toggle.open .chev{transform:rotate(180deg)}

/* --- Code blocks --- */
.code-block{background:#f8fafc;border:1px solid #e2e8f0;border-radius:12px;margin:18px 0 30px;overflow:hidden}
.code-block .code-head{display:flex;align-items:center;justify-content:space-between;padding:8px 14px;background:#f1f5f9;border-bottom:1px solid #e2e8f0}
.code-block .code-lang{font-size:.66rem;font-weight:700;color:#64748b;text-transform:uppercase;letter-spacing:.08em}
.code-block .copy-btn{background:#fff;border:1px solid #e2e8f0;color:#475569;font-size:.68rem;font-weight:600;padding:4px 11px;border-radius:6px;cursor:pointer;font-family:inherit;transition:background .15s,border-color .15s}
.code-block .copy-btn:hover{background:#eef2f7;border-color:#cbd5e1}
.code-block pre{margin:0;padding:16px 18px;overflow-x:auto}
.code-block code{font-family:'JetBrains Mono',monospace;font-size:12.5px;line-height:1.7;color:#24324a;white-space:pre}

/* --- Prism syntax highlighting overrides (light, site palette) --- */
.code-block pre[class*="language-"]{background:transparent;margin:0;padding:16px 18px;border-radius:0}
.code-block code[class*="language-"]{background:transparent;text-shadow:none}
.code-block .token.comment,.code-block .token.prolog,.code-block .token.doctype,.code-block .token.cdata{color:#64748b;font-style:italic}
.code-block .token.punctuation{color:#64748b}
.code-block .token.tag,.code-block .token.keyword,.code-block .token.selector,.code-block .token.atrule,.code-block .token.rule{color:#2563eb}
.code-block .token.attr-name,.code-block .token.function,.code-block .token.class-name,.code-block .token.property{color:#7c3aed}
.code-block .token.attr-value,.code-block .token.string,.code-block .token.char,.code-block .token.regex{color:#059669}
.code-block .token.number,.code-block .token.boolean,.code-block .token.constant,.code-block .token.builtin{color:#d97706}
.code-block .token.operator,.code-block .token.entity,.code-block .token.url{color:#0891b2}
.code-block .token.important,.code-block .token.variable{color:#b45309}
.code-block .token.bold{font-weight:700}
.code-block .token.italic{font-style:italic}

/* --- Notes box --- */
.notes-box{background:#f0fdf4;border:1px solid #dcfce7;border-left:3px solid #22c55e;border-radius:12px;padding:18px 22px;margin:36px 0 0}
.notes-box h3{font-size:.68rem;font-weight:700;color:#15803d;text-transform:uppercase;letter-spacing:.08em;margin:0 0 10px}
.notes-box ul{margin:0;padding-left:18px;color:#166534;font-size:.88rem;line-height:1.8}
.notes-box ul li{margin-bottom:7px}

/* --- Tip box ("What nobody tells you") --- */
.tip-box{background:#fffbeb;border:1px solid #fde68a;border-left:3px solid #f59e0b;border-radius:12px;padding:18px 22px;margin:36px 0 0}
.tip-box h3{font-size:.68rem;font-weight:700;color:#b45309;text-transform:uppercase;letter-spacing:.08em;margin:0 0 10px}
.tip-box p{margin:0;color:#78350f;font-size:.88rem;line-height:1.8}
.tip-box .code-block{margin:14px 0 0}
.tip-box .code-block:last-child{margin-bottom:0}

/* --- Try it Yourself --- */
.tryit-box{background:#fff;border:1px solid #e2e8f0;border-radius:16px;overflow:hidden;margin:42px 0;box-shadow:0 8px 24px -18px rgba(15,30,51,.25)}
.tryit-head{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;padding:14px 18px;background:#fafbfc;border-bottom:1px solid #e2e8f0}
.tryit-titles{flex:1;min-width:200px;display:flex;flex-direction:column;gap:2px}
.tryit-head .tryit-title{font-size:.92rem;font-weight:700;color:#1a2332}
.tryit-head .tryit-hint{font-size:.74rem;color:#94a3b8;font-weight:500}
.tryit-head button{border:none;border-radius:10px;padding:9px 18px;font-size:.8rem;font-weight:600;cursor:pointer;font-family:inherit;transition:background .15s}
.tryit-head .tryit-run{background:linear-gradient(135deg,#2563eb,#3b82f6);color:#fff}
.tryit-head .tryit-run:hover{filter:brightness(1.06)}
.tryit-head .tryit-reset{background:#e2e8f0;color:#475569}
.tryit-head .tryit-reset:hover{background:#cbd5e1}
.tryit-head .tryit-status{margin-left:auto;font-size:.7rem;font-weight:600;color:#94a3b8}
.tryit-body{display:grid;grid-template-columns:1fr 1fr;gap:0}
.tryit-editor{border-right:1px solid #e2e8f0}
.tryit-editor .hl-wrap{height:340px}
.tryit-bar{display:flex;align-items:center;gap:9px;padding:9px 14px;font-size:.64rem;font-weight:700;color:#64748b;text-transform:uppercase;letter-spacing:.08em;background:#f1f5f9;border-bottom:1px solid #e2e8f0}
.tryit-bar .bar-copy,.play-bar .bar-copy{margin-left:auto;background:#fff;border:1px solid #e2e8f0;color:#475569;font-size:.62rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;padding:4px 10px;border-radius:6px;cursor:pointer;font-family:inherit;transition:background .15s,border-color .15s}
.tryit-bar .bar-copy:hover,.play-bar .bar-copy:hover{background:#f1f5f9;border-color:#cbd5e1}
.tryit-view{background:#fff}
.tryit-view iframe{width:100%;height:340px;border:none;display:block;background:#fff}

/* --- Live editor overlay (Try it + Playground): Prism layer under a transparent textarea --- */
.hl-wrap{position:relative;background:#f8fafc}
.hl-layer{position:absolute;inset:0;margin:0;padding:16px 18px;overflow:auto;scrollbar-width:none;white-space:pre;pointer-events:none;font-family:'JetBrains Mono',monospace;font-size:12.5px;line-height:1.65;color:#24324a;background:transparent;border:none;border-radius:0;tab-size:4;letter-spacing:normal;word-spacing:normal}
.hl-layer::-webkit-scrollbar{display:none}
.hl-layer code{font-family:inherit;font-size:inherit;line-height:inherit;color:inherit;white-space:pre;tab-size:4}
.hl-wrap textarea{position:absolute;inset:0;z-index:1;width:100%;height:100%;border:none;outline:none;resize:none;padding:16px 18px;font-family:'JetBrains Mono',monospace;font-size:12.5px;line-height:1.65;color:transparent;-webkit-text-fill-color:transparent;caret-color:#1e3a5f;background:transparent;display:block;box-sizing:border-box;overflow:auto;tab-size:4;letter-spacing:normal;word-spacing:normal}
.hl-wrap textarea:focus{background:transparent;color:transparent;-webkit-text-fill-color:transparent;outline:none;box-shadow:none;border:none}
.hl-wrap textarea::selection{background:rgba(37,99,235,.18);color:transparent;-webkit-text-fill-color:transparent}
.hl-layer code[class*="language-"]{background:transparent;text-shadow:none}
.hl-layer .token.comment,.hl-layer .token.prolog,.hl-layer .token.doctype,.hl-layer .token.cdata{color:#64748b;font-style:italic}
.hl-layer .token.punctuation{color:#64748b}
.hl-layer .token.tag,.hl-layer .token.keyword,.hl-layer .token.selector,.hl-layer .token.atrule,.hl-layer .token.rule{color:#2563eb}
.hl-layer .token.attr-name,.hl-layer .token.function,.hl-layer .token.class-name,.hl-layer .token.property{color:#7c3aed}
.hl-layer .token.attr-value,.hl-layer .token.string,.hl-layer .token.char,.hl-layer .token.regex{color:#059669}
.hl-layer .token.number,.hl-layer .token.boolean,.hl-layer .token.constant,.hl-layer .token.builtin{color:#d97706}
.hl-layer .token.operator,.hl-layer .token.entity,.hl-layer .token.url{color:#0891b2}
.hl-layer .token.important,.hl-layer .token.variable{color:#b45309}

/* --- Practice prompt — user-friendly challenge --- */
.practice-box{background:linear-gradient(135deg,#eff6ff 0%,#f0fdf4 100%);border:1px solid #bfdbfe;border-radius:14px;padding:18px 20px;margin:32px 0;display:flex;gap:14px;align-items:flex-start}
.practice-box .practice-ico{width:36px;height:36px;border-radius:10px;background:#2563eb;color:#fff;display:flex;align-items:center;justify-content:center;font-size:1rem;flex-shrink:0}
.practice-box h3{font-size:.9rem;font-weight:800;color:#1e3a5f;margin:0 0 6px}
.practice-box p{font-size:.88rem;color:#334155;margin:0;line-height:1.6}
.practice-box ul{margin:8px 0 0;padding-left:18px;font-size:.85rem;color:#334155}
.practice-box .practice-hint{margin-top:10px;font-size:.78rem;color:#64748b;background:#fff;border:1px dashed #cbd5e1;padding:6px 10px;border-radius:8px;display:inline-block}
/* --- Track card language logos --- */
.tool-card-icon svg{width:26px;height:26px;display:block}

/* --- Related --- */
.related-box{margin-top:38px}
.related-box h3{font-size:.7rem;font-weight:700;color:#94a3b8;text-transform:uppercase;letter-spacing:.08em;margin-bottom:12px}
.related-box .related-links{display:flex;flex-wrap:wrap;gap:8px}
.related-box .related-links a{background:#eff6ff;color:#1d4ed8;border:1px solid #dbeafe;border-radius:999px;padding:7px 15px;font-size:.8rem;font-weight:600;text-decoration:none;transition:background .15s,border-color .15s}
.related-box .related-links a:hover{background:#dbeafe;border-color:#93c5fd}

/* --- Prev / Next --- */
.lesson-nav{display:flex;justify-content:space-between;gap:14px;margin:44px 0 6px}
.lesson-nav a{flex:1;max-width:48%;background:#fff;border:1px solid #e2e8f0;border-radius:12px;padding:14px 18px;text-decoration:none;transition:border-color .15s,box-shadow .15s}
.lesson-nav a:hover{border-color:#93c5fd;box-shadow:0 8px 20px -14px rgba(37,99,235,.3)}
.lesson-nav a.next{text-align:right}
.lesson-nav .nav-label{font-size:.66rem;font-weight:700;color:#2563eb;text-transform:uppercase;letter-spacing:.07em}
.lesson-nav .nav-title{font-size:.88rem;font-weight:600;color:#1a2332;margin-top:4px}

/* --- Course contents card (lessons + track pages) --- */
.contents-block{margin-top:56px}
.contents-kicker{font-size:.7rem;font-weight:700;color:#94a3b8;text-transform:uppercase;letter-spacing:.09em;margin-bottom:12px;text-align:center}
.contents-card{background:#fff;border:1px solid #e2e8f0;border-radius:16px;overflow:hidden;box-shadow:0 8px 24px -20px rgba(15,30,51,.2)}
.contents-head{display:flex;align-items:center;gap:10px;padding:14px 20px;background:#fafbfc;border-bottom:1px solid #e2e8f0}
.contents-dot{width:9px;height:9px;border-radius:50%;flex-shrink:0}
.contents-title{font-size:.88rem;font-weight:700;color:#1a2332}
.contents-count{font-size:.66rem;font-weight:700;color:#94a3b8;margin-left:auto;white-space:nowrap}
.contents-card .lesson-row{display:flex;align-items:center;gap:12px;padding:12px 20px;border-bottom:1px solid #f1f5f9;color:#3f4d61;font-size:.88rem;font-weight:500;text-decoration:none;transition:background .12s,color .12s}
.contents-card .lesson-row:last-of-type{border-bottom:none}
.contents-card .lesson-row:hover{background:#f8fafc;color:#1a2332}
.contents-card .lesson-row.active{background:#eff6ff;color:#1e3a5f;font-weight:700}
.contents-card .lesson-row-num{font-family:'JetBrains Mono',monospace;font-size:.66rem;font-weight:600;color:#94a3b8;background:#f1f5f9;border:1px solid #e2e8f0;border-radius:6px;padding:2px 8px;flex-shrink:0}
.contents-card .lesson-row.active .lesson-row-num{color:#2563eb;background:#dbeafe;border-color:#bfdbfe}
.contents-card .lesson-row-check{width:15px;height:15px;border-radius:50%;border:1.5px solid #cbd5e1;flex-shrink:0;margin-left:auto;display:inline-flex;align-items:center;justify-content:center;font-size:8px;color:#fff}
.contents-card .lesson-row.done .lesson-row-check{background:#22c55e;border-color:#22c55e}
.contents-card .lesson-row-check::after{content:""}
.contents-card .lesson-row.done .lesson-row-check::after{content:"\2713"}
.contents-card .lesson-row-arrow{color:#cbd5e1;flex-shrink:0;font-size:.8rem}
.contents-card .lesson-row:hover .lesson-row-arrow{color:#2563eb}
.contents-card .contents-play{display:flex;align-items:center;justify-content:center;gap:7px;padding:13px;background:#fafbfc;border-top:1px solid #e2e8f0;color:#1e3a5f;font-size:.82rem;font-weight:700;text-decoration:none;transition:background .12s,color .12s}
.contents-card .contents-play:hover{background:#eff6ff;color:#1d4ed8}

/* --- Playground --- */
.play-tabs{display:flex;gap:4px;margin-bottom:14px;border-bottom:1px solid #e2e8f0}
.play-tabs button{border:none;background:none;color:#64748b;border-bottom:2px solid transparent;padding:9px 16px;margin-bottom:-1px;font-size:.85rem;font-weight:600;cursor:pointer;font-family:inherit;transition:color .15s,border-color .15s}
.play-tabs button.active{color:#1e3a5f;border-bottom-color:#2563eb}
.play-tabs button:hover{color:#1a2332}
.play-actions{display:flex;gap:10px;margin-bottom:16px}
.play-actions button{border:none;border-radius:10px;padding:10px 20px;font-size:.84rem;font-weight:600;cursor:pointer;font-family:inherit;transition:background .15s}
.play-actions .play-run{background:linear-gradient(135deg,#2563eb,#3b82f6);color:#fff}
.play-actions .play-run:hover{filter:brightness(1.06)}
.play-actions .play-reset{background:#e2e8f0;color:#475569}
.play-actions .play-reset:hover{background:#cbd5e1}
.play-actions .play-download{background:#1e3a5f;color:#fff}
.play-actions .play-download:hover{background:#172f4e}
.play-editor{border:1px solid #e2e8f0;border-radius:12px;overflow:hidden;margin-bottom:16px;background:#fff}
.play-editor .hl-wrap{height:320px}
.play-bar{display:flex;align-items:center;gap:9px;padding:10px 14px;font-size:.66rem;font-weight:700;color:#64748b;text-transform:uppercase;letter-spacing:.08em;background:#f1f5f9;border-bottom:1px solid #e2e8f0}
.play-preview{border:1px solid #e2e8f0;border-radius:12px;overflow:hidden;background:#fff}
.play-preview .preview-dot{width:9px;height:9px;border-radius:50%;background:#cbd5e1}
.play-preview iframe{width:100%;height:400px;border:none;display:block;background:#fff}

/* --- Mobile nav (hamburger) --- */
.nav-toggle{display:none;align-items:center;justify-content:center;width:40px;height:40px;border:1px solid #e2e8f0;border-radius:10px;background:#fff;color:#1e3a5f;font-size:1.05rem;line-height:1;cursor:pointer;flex-shrink:0;font-family:inherit}

/* --- Tablet: keep sidebar visible as 2-col grid --- */
@media(min-width:641px) and (max-width:1023px){
  .lesson-layout{grid-template-columns:1fr;gap:28px}
  .lesson-side{position:static;max-height:none;overflow:visible;display:grid;grid-template-columns:1fr 1fr;gap:18px}
  .lesson-side .contents-card{margin:0}
  .lesson-main{max-width:100%}
}
@media(max-width:1023px){
  .lesson-layout{grid-template-columns:1fr;gap:28px}
  .lesson-side{position:static;max-height:none;overflow:visible}
  .lesson-toc{display:none}
}
@media(max-width:640px){
  .contents-toggle{display:flex}
  .lesson-side .contents-card{display:none}
  .lesson-side.open .contents-card{display:block}
}
@media(max-width:768px){
  .header-inner{position:relative}
  .nav-toggle{display:inline-flex}
  .header-nav{display:none;position:absolute;top:calc(100% + 10px);left:12px;right:12px;flex-direction:column;align-items:stretch;background:#fff;border:1px solid #e2e8f0;border-radius:14px;box-shadow:0 20px 44px -20px rgba(15,30,51,.35);padding:10px;z-index:120}
  .header-nav.open{display:flex}
  .header-nav a{padding:12px 16px;font-size:.92rem}
  .page-hero{padding:52px 18px 38px}
  .tool-section{padding:8px 16px 0}
  .tool-section + .tool-section,.tool-section + section,.tool-section + div{margin-top:44px}
  .play-actions{flex-wrap:wrap}
  .play-tabs{overflow-x:auto;scrollbar-width:none}
  .play-tabs::-webkit-scrollbar{display:none}
  .play-tabs button{flex-shrink:0}
}
@media(max-width:640px){
  .lesson-wrap{padding:30px 16px 10px}
  .lesson-main h1{font-size:1.7rem}
  .lesson-main .lesson-lead{font-size:1rem}
  .tryit-body{grid-template-columns:1fr}
  .tryit-editor{border-right:none;border-bottom:1px solid #e2e8f0}
  .lesson-nav{flex-direction:column}
  .lesson-nav a{max-width:none}
  .contents-card .lesson-row{padding:11px 14px}
  .page-hero h1{font-size:2rem}
  .page-hero p{font-size:.98rem}
  .section-header h2{font-size:1.8rem}
  .section-header p{font-size:.95rem}
  .hl-wrap{height:300px!important}
  .tryit-view iframe{height:300px}
  .play-preview iframe{height:340px}
  .tryit-head{padding:12px 14px}
  .tryit-head .tryit-status{margin-left:0}
  .faq-box{padding:8px 18px}
  .cta-block{border-radius:20px}
  .learn-hero .learn-stats-line{font-size:.82rem;line-height:1.7}
}
/* ===== PANDA HERO — Premium + Clean (v19) ===== */
.panda-hero{position:relative;overflow:hidden;background:#FFFFFF;padding:52px 24px 36px;border-bottom:1px solid #EEF2F7}
.panda-hero::before{content:"";position:absolute;inset:0;background-image:radial-gradient(#E2E8F0 1px, transparent 1px);background-size:22px 22px;opacity:.32;pointer-events:none}
.panda-hero::after{content:"";position:absolute;width:560px;height:560px;right:-80px;top:-120px;background:radial-gradient(circle at 30% 30%, #EFF6FF 0%, #DBEAFE 32%, transparent 72%);opacity:.9;pointer-events:none}
.panda-hero-inner{max-width:1120px;margin:0 auto;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;position:relative;z-index:1}
.panda-hero-text{padding:8px 0}
.panda-eyebrow{display:inline-flex;align-items:center;gap:8px;background:#F8FAFC;border:1px solid #E2E8F0;color:#475569;font-size:.72rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;padding:6px 11px;border-radius:999px;margin-bottom:18px}
.panda-eyebrow .dot{width:6px;height:6px;border-radius:50%;background:#22C55E;flex-shrink:0}
.panda-hero-text h1{font-size:3.2rem;line-height:.92;letter-spacing:-.04em;font-weight:800;color:#0F172A;margin:0 0 16px}
.panda-hero-text h1 .accent{background:linear-gradient(135deg,#1E3A5F 0%, #2563EB 55%, #60A5FA 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.panda-hero-text h1 .script{font-family:'Plus Jakarta Sans',cursive;font-style:italic;font-weight:800;color:#CA8A04;display:inline-block;transform:rotate(-1deg)}
.panda-hero-text .lead{font-size:1.06rem;line-height:1.75;color:#475569;max-width:520px;margin:0 0 22px}
.panda-hero-text .lead b{color:#1E3A5F;font-weight:700}
.panda-cta-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin:0 0 18px}
.panda-cta-row .btn{padding:13px 22px;font-size:.94rem;border-radius:12px;box-shadow:0 8px 20px -14px rgba(37,99,235,.45)}
.panda-cta-row .btn-ghost{display:inline-flex;align-items:center;gap:8px;padding:11px 16px;border-radius:12px;border:1px solid #E2E8F0;background:#FFF;color:#1E3A5F;font-weight:600;font-size:.88rem;text-decoration:none;transition:all .18s}
.panda-cta-row .btn-ghost:hover{border-color:#CBD5E1;background:#F8FAFC}
.panda-stats{color:#64748B;font-size:.84rem;font-weight:500;letter-spacing:.01em}
.panda-stats b{color:#1E3A5F;font-weight:700}
/* Art — clean sticker, soft blob behind */
.panda-hero-art{position:relative;display:flex;align-items:center;justify-content:center;min-height:460px;padding:8px}
.panda-hero-art::before{content:"";position:absolute;width:min(420px,88%);height:min(420px,88%);left:50%;top:50%;transform:translate(-50%,-44%);background:radial-gradient(circle at 50% 38%, #EFF6FF 0%, #DBEAFE 38%, transparent 70%);border-radius:50%;pointer-events:none}
.panda-sticker-wrap{position:relative;width:min(480px,100%);filter:drop-shadow(0 18px 32px rgba(15,30,51,.14));transition:transform .35s cubic-bezier(.16,1,.3,1)}
.panda-sticker-wrap:hover{transform:translateY(-3px)}
.panda-sticker-wrap img,.panda-sticker-wrap svg{width:100%;height:auto;display:block}
/* Clean track cards — no playful rotate, just premium hover */
.tools-grid .tool-card.panda-card{border-radius:20px}
.tools-grid .tool-card.panda-card:hover{transform:translateY(-4px);border-color:#CBD5E1;box-shadow:0 12px 24px -18px rgba(15,30,51,.18)}
/* Hide old busy elements */
.panda-float,.panda-buddy,.panda-trust,.panda-clouds{display:none !important}
/* ===== SEO Detailed Tracks ===== */
.seo-tracks{display:grid;grid-template-columns:1fr;gap:18px;max-width:900px;margin:0 auto}
.seo-track{background:#fff;border:1px solid #E2E8F0;border-radius:20px;padding:26px 28px;transition:all .25s}
.seo-track:hover{border-color:#CBD5E1;box-shadow:0 10px 22px -18px rgba(15,30,51,.12)}
.seo-track-head{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.seo-track-icon{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:.78rem;font-weight:800;flex-shrink:0}
.seo-track h3{font-size:1.06rem;font-weight:800;color:#0F172A;margin:0;line-height:1.3}
.seo-track p{font-size:.92rem;color:#475569;line-height:1.75;margin:0 0 14px}
.seo-track p a{color:#2563eb;text-decoration:none;font-weight:600}
.seo-track p a:hover{text-decoration:underline}
.seo-track code{background:#F1F5F9;border:1px solid #E2E8F0;padding:1px 6px;border-radius:6px;font-family:'JetBrains Mono',monospace;font-size:.8rem;color:#334155}
.seo-list{list-style:none;padding:0;margin:0 0 14px;display:flex;flex-wrap:wrap;gap:8px}
.seo-list li{background:#F8FAFC;border:1px solid #E2E8F0;color:#334155;font-size:.78rem;font-weight:600;padding:6px 10px;border-radius:999px}
.seo-link{display:inline-flex;align-items:center;gap:6px;color:#2563eb;font-weight:700;font-size:.88rem;text-decoration:none}
.seo-link:hover{color:#1D4ED8}
/* Benefits */
.benefits-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;max-width:1050px;margin:0 auto}
.benefit-card{background:#fff;border:1px solid #E2E8F0;border-radius:20px;padding:24px 22px}
.benefit-ico{width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:1rem;margin-bottom:14px}
.benefit-card h3{font-size:.96rem;font-weight:700;color:#0F172A;margin:0 0 8px}
.benefit-card p{font-size:.88rem;color:#475569;line-height:1.65;margin:0}
.audience-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;max-width:1050px;margin:0 auto}
.audience-card{background:#F8FAFC;border:1px solid #E2E8F0;border-radius:20px;padding:24px 22px}
.audience-card h3{font-size:.96rem;font-weight:700;color:#0F172A;margin:0 0 8px}
.audience-card p{font-size:.88rem;color:#475569;line-height:1.65;margin:0}
.audience-card a{color:#2563eb;text-decoration:none;font-weight:600}
.audience-card a:hover{text-decoration:underline}
@media(max-width:900px){.benefits-grid{grid-template-columns:repeat(2,1fr)}.audience-grid{grid-template-columns:1fr 1fr}}
@media(max-width:640px){.benefits-grid{grid-template-columns:1fr}.audience-grid{grid-template-columns:1fr}.seo-track{padding:20px 18px}.seo-track-head{flex-direction:column;align-items:flex-start}}
/* Responsive — premium */
@media(max-width:1023px){
  .panda-hero-inner{grid-template-columns:1fr;gap:28px}
  .panda-hero-text{order:2}
  .panda-hero-art{order:1;min-height:380px}
  .panda-hero-text h1{font-size:2.7rem}
}
@media(max-width:640px){
  .panda-hero{padding:32px 16px 28px}
  .panda-hero-art{min-height:300px}
  .panda-hero-text h1{font-size:2.2rem}
  .panda-hero-text .lead{font-size:1rem}
}
@media(max-width:400px){
  .page-hero h1{font-size:1.6rem}
  .page-hero p{font-size:.95rem}
  .lesson-main h1{font-size:1.45rem}
  .lesson-main h2{font-size:1.12rem}
  .tryit-head .tryit-run,.tryit-head .tryit-reset{flex:1;text-align:center}
  .header-actions .btn-outline{padding:6px 10px;font-size:.8rem}
}