*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#080c14;--bg2:#0e1525;--bg3:#141d30;--border:#1e2d4a;
  --cyan:#00e5ff;--cyan-dim:rgba(0,229,255,0.1);
  --amber:#ffb300;--amber-dim:rgba(255,179,0,0.1);
  --green:#7c4dff;--green-dim:rgba(124,77,255,0.1);
  --pink:#ff4081;--pink-dim:rgba(255,64,129,0.08);
  --purple:#ce93d8;--purple-dim:rgba(206,147,216,0.1);
  --text:#dde4f0;--text-muted:#6b7c9e;--text-dim:#3a4a6a;
  --string:#a5d6a7;--number:#ffcc80;
  --sidebar-w:256px;--topbar-h:52px;--radius:10px;
  --mono:'JetBrains Mono',monospace;--sans:'Space Grotesk',sans-serif;
}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:var(--sans);overflow-x:hidden;line-height:1.6}
::-webkit-scrollbar{width:5px}::-webkit-scrollbar-track{background:var(--bg)}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}

.topbar{position:fixed;top:0;left:0;right:0;height:var(--topbar-h);background:rgba(8,12,20,0.92);backdrop-filter:blur(20px);border-bottom:1px solid var(--border);display:flex;align-items:center;gap:1rem;padding:0 1.25rem;z-index:200}
.topbar-divider{width:1px;height:20px;background:var(--border)}
.topbar-title{font-size:0.85rem;color:var(--text-muted);flex:1}
.topbar-progress-wrap{flex:1;max-width:200px;height:4px;background:var(--border);border-radius:2px;overflow:hidden}
.topbar-progress-bar{height:100%;background:linear-gradient(90deg,var(--green),var(--cyan));border-radius:2px;transition:width 0.2s}
.hamburger{display:none;background:none;border:none;cursor:pointer;flex-direction:column;gap:4px;padding:4px}
.hamburger span{display:block;width:20px;height:2px;background:var(--text-muted);border-radius:1px}
@media(max-width:768px){.hamburger{display:flex}}

.layout{display:flex;padding-top:var(--topbar-h);min-height:100vh;min-width:0}
.sidebar{width:var(--sidebar-w);flex-shrink:0;position:fixed;top:var(--topbar-h);left:0;bottom:0;background:var(--bg2);border-right:1px solid var(--border);overflow-y:auto;scrollbar-width:thin;transition:transform 0.3s ease;z-index:150}
@media(max-width:768px){.sidebar{transform:translateX(-100%)}.sidebar.open{transform:translateX(0);box-shadow:4px 0 30px rgba(0,0,0,0.5)}}
.sidebar-section{padding:1.25rem 0 0.5rem}
.sidebar-section-label{font-size:0.65rem;font-family:var(--mono);letter-spacing:0.12em;text-transform:uppercase;color:var(--text-dim);padding:0 1.25rem 0.5rem}
.sidebar-item{display:flex;align-items:center;gap:0.6rem;padding:0.55rem 1.25rem;cursor:pointer;font-size:0.85rem;color:var(--text-muted);transition:all 0.15s;border-left:2px solid transparent;text-decoration:none}
.sidebar-item:hover{color:var(--text);background:var(--bg3)}
.sidebar-item.active{color:var(--green);background:var(--green-dim);border-left-color:var(--green);font-weight:600}
.sidebar-item.locked{opacity:0.4;cursor:not-allowed;pointer-events:none}
.sidebar-item-icon{font-size:0.75rem;width:16px;text-align:center;flex-shrink:0}
.sidebar-badge{margin-left:auto;font-size:0.6rem;font-family:var(--mono);padding:0.15rem 0.4rem;border-radius:4px;background:var(--bg3);color:var(--text-dim);border:1px solid var(--border)}
.sidebar-badge.new{background:var(--green-dim);color:var(--green);border-color:rgba(124,77,255,0.3)}
.sidebar-badge.done{background:rgba(0,230,118,0.06);color:#00e676;border-color:rgba(0,230,118,0.3)}

.main{flex:1;min-width:0;margin-left:var(--sidebar-w);min-height:calc(100vh - var(--topbar-h))}
@media(max-width:768px){.main{margin-left:0}}

.hero{padding:5rem 3rem 4rem;border-bottom:1px solid var(--border);position:relative;overflow:hidden}
.hero-grid{position:absolute;inset:0;background-image:linear-gradient(var(--border) 1px,transparent 1px),linear-gradient(90deg,var(--border) 1px,transparent 1px);background-size:48px 48px;opacity:0.2;mask-image:radial-gradient(ellipse 90% 100% at 20% 50%,black 20%,transparent 100%)}
.hero-badge{display:inline-flex;align-items:center;gap:0.5rem;background:var(--green-dim);border:1px solid rgba(124,77,255,0.25);border-radius:999px;padding:0.3rem 0.85rem;font-size:0.7rem;font-family:var(--mono);color:var(--green);letter-spacing:0.08em;text-transform:uppercase;margin-bottom:1.5rem}
.badge-dot{width:5px;height:5px;border-radius:50%;background:var(--green);animation:pulse 2s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:0.4;transform:scale(0.8)}}
.hero h1{font-size:clamp(2rem,4vw,3.2rem);font-weight:700;line-height:1.15;margin-bottom:0.75rem}
.hero h1 .grad{background:linear-gradient(90deg,var(--green),var(--cyan));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-meta{display:flex;align-items:center;gap:1rem;flex-wrap:wrap}
.hero-pill{display:inline-flex;align-items:center;gap:0.4rem;font-size:0.78rem;color:var(--text-muted);background:var(--bg3);border:1px solid var(--border);padding:0.3rem 0.75rem;border-radius:999px}

.clause-nav{position:sticky;top:var(--topbar-h);z-index:100;background:rgba(8,12,20,0.9);backdrop-filter:blur(16px);border-bottom:1px solid var(--border);padding:0.6rem 1.5rem;display:flex;align-items:center;gap:0.4rem;overflow-x:auto;scrollbar-width:none}
.clause-nav::-webkit-scrollbar{display:none}
.clause-pill{flex-shrink:0;display:inline-flex;align-items:center;gap:0.35rem;padding:0.35rem 0.8rem;border-radius:999px;font-family:var(--mono);font-size:0.72rem;font-weight:600;cursor:pointer;border:1px solid transparent;transition:all 0.15s;text-decoration:none;background:transparent;color:var(--text-muted)}
.clause-pill:hover,.clause-pill.active{background:var(--green-dim);border-color:rgba(124,77,255,0.35);color:var(--green)}
.clause-pill.quiz-pill:hover,.clause-pill.quiz-pill.active{background:var(--amber-dim);border-color:rgba(255,179,0,0.35);color:var(--amber)}

.content{max-width:860px;padding:0 2.5rem 4rem;margin:0 auto}
@media(max-width:600px){.content{padding:0 1rem 3rem}}

.clause-section{padding:4rem 0 2rem;border-bottom:1px solid var(--border);opacity:0;transform:translateY(32px);transition:opacity 0.65s ease,transform 0.65s ease}
.clause-section.visible{opacity:1;transform:translateY(0)}
.clause-label{display:flex;align-items:center;gap:0.75rem;margin-bottom:1.25rem}
.clause-num{font-family:var(--mono);font-size:0.7rem;color:var(--text-dim)}
.clause-keyword{font-family:var(--mono);font-size:clamp(1.4rem,2.8vw,2.2rem);font-weight:700;color:var(--green);line-height:1.2}
.clause-sub{font-size:0.9rem;color:var(--text-muted);margin-bottom:1.5rem}

.analogy{font-size:1rem;line-height:1.75;color:var(--text);margin-bottom:1.5rem;padding:1.25rem 1.5rem;background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);border-left:3px solid var(--green)}
.analogy.amber{border-left-color:var(--amber)}
.analogy.cyan{border-left-color:var(--cyan)}
.analogy.pink{border-left-color:var(--pink)}
.analogy.purple{border-left-color:var(--purple)}
.analogy em{font-style:normal;font-weight:600;color:var(--green)}
.analogy.amber em{color:var(--amber)}
.analogy.cyan em{color:var(--cyan)}
.analogy.pink em{color:var(--pink)}
.analogy.purple em{color:var(--purple)}

.card-grid{display:grid;grid-template-columns:1fr 1fr;gap:0.75rem;margin-bottom:1.25rem}
@media(max-width:560px){.card-grid{grid-template-columns:1fr}}
.card-grid.grid3{grid-template-columns:1fr 1fr 1fr}
@media(max-width:720px){.card-grid.grid3{grid-template-columns:1fr 1fr}}
@media(max-width:480px){.card-grid.grid3{grid-template-columns:1fr}}
.card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:1.1rem 1.25rem;position:relative;overflow:hidden}
.card::before{content:'';position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--green),transparent)}
.card.cyan::before{background:linear-gradient(90deg,var(--cyan),transparent)}
.card.amber::before{background:linear-gradient(90deg,var(--amber),transparent)}
.card.pink::before{background:linear-gradient(90deg,var(--pink),transparent)}
.card.purple::before{background:linear-gradient(90deg,var(--purple),transparent)}
.card-lbl{font-size:0.65rem;font-family:var(--mono);letter-spacing:0.1em;text-transform:uppercase;color:var(--text-dim);margin-bottom:0.5rem}
.card p{font-size:0.88rem;color:var(--text);line-height:1.55}
.card .mono{font-family:var(--mono);font-size:0.88rem;color:var(--green)}
.card.cyan .mono{color:var(--cyan)}
.card.amber .mono{color:var(--amber)}

.code-block{background:#050810;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;margin:1rem 0}
.code-toolbar{display:flex;align-items:center;justify-content:space-between;padding:0.5rem 0.85rem;border-bottom:1px solid var(--border);background:var(--bg2)}
.code-dots{display:flex;gap:5px}
.code-dot{width:9px;height:9px;border-radius:50%}
.code-dot.r{background:#ff5f57}.code-dot.y{background:#ffbd2e}.code-dot.g{background:#28c940}
.code-lang{font-family:var(--mono);font-size:0.65rem;color:var(--text-dim);letter-spacing:0.08em;text-transform:uppercase}
.code-body{padding:1.25rem;font-family:var(--mono);font-size:0.86rem;line-height:2;overflow-x:auto}
.code-line{display:block;opacity:0;transform:translateX(-6px);transition:opacity 0.35s ease,transform 0.35s ease}
.code-line.show{opacity:1;transform:translateX(0)}
.kw{color:var(--cyan);font-weight:700}.str{color:var(--string)}.num{color:var(--number)}.fn{color:#ce93d8}.cm{color:#546e7a;font-style:italic}

.result-table-wrap{margin-top:0.75rem;background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius);overflow-x:auto;animation:fadeUp 0.3s ease}
@keyframes fadeUp{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}
.r-table{width:100%;border-collapse:collapse;font-family:var(--mono);font-size:0.78rem}
.r-table th{background:var(--bg2);color:var(--cyan);padding:0.45rem 0.75rem;text-align:left;border-bottom:1px solid var(--border);white-space:nowrap}
.r-table td{padding:0.4rem 0.75rem;color:var(--text);border-bottom:1px solid rgba(30,45,74,0.5);white-space:nowrap}
.r-table tr:last-child td{border-bottom:none}
.r-table tr:hover td{background:var(--bg2)}
.r-table td.hi{color:var(--green);font-weight:600}
.r-count{padding:0.45rem 0.75rem;font-family:var(--mono);font-size:0.7rem;color:var(--green);border-top:1px solid var(--border);background:var(--bg2)}

.ok-box{margin-top:0.5rem;padding:0.6rem 0.85rem;background:var(--green-dim);border:1px solid rgba(124,77,255,0.3);border-radius:8px;font-family:var(--mono);font-size:0.78rem;color:var(--green)}
.warn-box{margin-top:0.5rem;padding:0.6rem 0.85rem;background:var(--amber-dim);border:1px solid rgba(255,179,0,0.3);border-radius:8px;font-family:var(--mono);font-size:0.78rem;color:var(--amber)}
.error-box{margin-top:0.5rem;padding:0.6rem 0.85rem;background:rgba(255,64,129,0.08);border:1px solid rgba(255,64,129,0.3);border-radius:8px;font-family:var(--mono);font-size:0.78rem;color:var(--pink)}

.quiz-section{padding:3rem 0 2rem}
.quiz-header{text-align:center;margin-bottom:2.5rem}
.quiz-header h2{font-size:1.5rem;font-weight:700;margin-bottom:0.4rem}
.quiz-header p{color:var(--text-muted);font-size:0.9rem}
.quiz-card{background:var(--bg2);border:1px solid var(--border);border-radius:14px;padding:2rem;margin-bottom:1.25rem;transition:border-color 0.2s}
.quiz-card.correct{border-color:var(--green)}
.quiz-card.wrong{border-color:var(--pink)}
.quiz-q-num{font-family:var(--mono);font-size:0.68rem;color:var(--text-dim);letter-spacing:0.1em;text-transform:uppercase;margin-bottom:0.6rem}
.quiz-q{font-size:1rem;font-weight:600;margin-bottom:1.25rem;line-height:1.5}
.quiz-options{display:flex;flex-direction:column;gap:0.5rem}
.quiz-option{display:flex;align-items:center;gap:0.75rem;padding:0.75rem 1rem;border-radius:8px;border:1px solid var(--border);background:var(--bg3);cursor:pointer;transition:all 0.15s;font-size:0.9rem;text-align:left;font-family:var(--sans);color:var(--text);width:100%}
.quiz-option:hover:not(:disabled){border-color:rgba(124,77,255,0.35);background:var(--green-dim)}
.quiz-option.selected-correct{border-color:var(--green);background:var(--green-dim);color:var(--green)}
.quiz-option.selected-wrong{border-color:var(--pink);background:rgba(255,64,129,0.08);color:var(--pink)}
.quiz-option.reveal-correct{border-color:var(--green);background:var(--green-dim)}
.quiz-option:disabled{cursor:default}
.quiz-option-letter{width:24px;height:24px;border-radius:50%;background:var(--bg);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;font-family:var(--mono);font-size:0.7rem;font-weight:700;flex-shrink:0;transition:all 0.15s}
.quiz-option.selected-correct .quiz-option-letter{background:var(--green);border-color:var(--green);color:#000}
.quiz-option.selected-wrong .quiz-option-letter{background:var(--pink);border-color:var(--pink);color:#fff}
.quiz-option.reveal-correct .quiz-option-letter{background:var(--green);border-color:var(--green);color:#000}
.quiz-feedback{margin-top:0.75rem;padding:0.6rem 0.85rem;border-radius:8px;font-size:0.83rem;font-weight:500}
.quiz-feedback.correct{background:var(--green-dim);color:var(--green)}
.quiz-feedback.wrong{background:rgba(255,64,129,0.08);color:var(--pink)}
.score-card{background:linear-gradient(135deg,var(--bg2),var(--bg3));border:1px solid var(--border);border-radius:14px;padding:3rem 2rem;text-align:center;margin-top:1.5rem}
.score-num{font-family:var(--mono);font-size:3.5rem;font-weight:700;line-height:1;margin-bottom:0.5rem}
.score-label{color:var(--text-muted);font-size:0.9rem;margin-bottom:1.5rem}
.score-bar-wrap{height:6px;background:var(--border);border-radius:3px;overflow:hidden;max-width:300px;margin:0 auto 1.5rem}
.score-bar{height:100%;border-radius:3px;background:linear-gradient(90deg,var(--green),var(--cyan));transition:width 1s ease}
.btn-primary{background:var(--green);color:#000;font-family:var(--sans);font-weight:700;font-size:0.9rem;border:none;padding:0.75rem 1.75rem;border-radius:var(--radius);cursor:pointer;transition:all 0.2s}
.btn-primary:hover{background:#fff;transform:translateY(-2px);box-shadow:0 8px 24px rgba(124,77,255,0.25)}

.next-topic{border-top:1px solid var(--border);padding:3rem 2.5rem;display:flex;align-items:center;justify-content:space-between;gap:2rem;flex-wrap:wrap}
.next-topic-left h3{font-size:0.75rem;font-family:var(--mono);color:var(--text-dim);text-transform:uppercase;letter-spacing:0.1em;margin-bottom:0.4rem}
.next-topic-left h2{font-size:1.3rem;font-weight:700}
.next-topic-left p{font-size:0.85rem;color:var(--text-muted);margin-top:0.25rem}
.prev-btn{display:flex;align-items:center;gap:0.6rem;background:var(--bg2);border:1px solid var(--border);border-radius:12px;padding:0.85rem 1.25rem;cursor:pointer;transition:all 0.2s;text-decoration:none;color:var(--text-muted);font-size:0.82rem;flex-shrink:0}
.prev-btn:hover{color:var(--text);border-color:rgba(124,77,255,0.3)}
.next-btn{display:flex;align-items:center;gap:0.6rem;background:var(--bg2);border:1px solid var(--border);border-radius:12px;padding:1rem 1.5rem;cursor:pointer;transition:all 0.2s;text-decoration:none;color:var(--text);flex-shrink:0}
.next-btn:hover{border-color:var(--green);background:var(--green-dim);color:var(--green);transform:translateX(4px)}
.next-btn-label{font-size:0.72rem;font-family:var(--mono);color:var(--text-dim);margin-bottom:0.2rem}
.next-btn-title{font-weight:700;font-size:0.95rem}
.overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,0.5);z-index:140}
.overlay.show{display:block}
.topbar-logo-link{text-decoration:none;display:flex;align-items:center;gap:7px;flex-shrink:0}
.topbar-logo-icon{width:26px;height:26px;border-radius:6px;background:#4f7df8;display:flex;align-items:center;justify-content:center;font-size:8px;font-weight:800;color:#fff;font-family:'Poppins',system-ui,sans-serif;flex-shrink:0}
.topbar-logo-text{font-weight:800;font-size:14px;color:#e8eaf0;font-family:'Poppins',system-ui,sans-serif;white-space:nowrap}
.topbar-logo-text .accent{color:#4f7df8}
.topbar-nav{display:flex;align-items:center;gap:2px;margin-left:auto;flex-shrink:0}
.topbar-nav-link{padding:5px 11px;border-radius:6px;font-size:12px;color:#8b95a8;text-decoration:none;transition:color 0.15s,background 0.15s;font-family:var(--sans);white-space:nowrap}
.topbar-nav-link:hover{color:#e8eaf0;background:rgba(255,255,255,0.05)}
.topbar-nav-link.active{color:#6b9bff;background:rgba(79,125,248,0.12);font-weight:600}
@media(max-width:900px){.topbar-nav .hide-md{display:none}}
@media(max-width:640px){.topbar-nav{display:none}}
.faq-section{padding:3rem 0 2rem}
.faq-section h2{font-size:1.4rem;font-weight:700;margin-bottom:1.5rem}
.faq-item{border-bottom:1px solid var(--border)}
.faq-item details{padding:0}
.faq-item summary{padding:1rem 0;cursor:pointer;font-size:0.95rem;font-weight:600;color:var(--text);list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq-item summary::after{content:'+';font-size:1.1rem;color:var(--green);flex-shrink:0}
.faq-item details[open] summary::after{content:'−'}
.faq-item details p{padding:0 0 1rem;font-size:0.88rem;color:var(--text-muted);line-height:1.7;margin:0}

.snippet-box{background:var(--bg2);border:1px solid var(--border);border-left:4px solid var(--green);border-radius:var(--radius);padding:1.25rem 1.5rem;margin-bottom:1.5rem}
.snippet-box h3{font-size:0.7rem;font-family:var(--mono);color:var(--green);text-transform:uppercase;letter-spacing:0.1em;margin-bottom:0.5rem}
.snippet-box p{font-size:0.95rem;line-height:1.75;color:var(--text)}

.comp-table-wrap{margin:1rem 0;background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);overflow-x:auto}
.comp-table{width:100%;border-collapse:collapse;font-size:0.85rem}
.comp-table th{background:var(--bg3);padding:0.65rem 1rem;text-align:left;color:var(--text-muted);font-family:var(--mono);font-size:0.72rem;text-transform:uppercase;letter-spacing:0.08em;border-bottom:1px solid var(--border);white-space:nowrap}
.comp-table td{padding:0.6rem 1rem;border-bottom:1px solid rgba(30,45,74,0.5);color:var(--text);vertical-align:top;font-size:0.85rem}
.comp-table tr:last-child td{border-bottom:none}
.comp-table td:first-child{font-family:var(--mono);font-weight:600;color:var(--cyan);white-space:nowrap}
.comp-table td code{font-family:var(--mono);font-size:0.82em;background:var(--bg3);padding:0.1em 0.4em;border-radius:4px;color:var(--number)}
.comp-table tr:hover td{background:var(--bg3)}

.mistake-list{display:flex;flex-direction:column;gap:1rem;margin:1rem 0}
.mistake-item{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}
.mistake-header{display:flex;align-items:center;gap:0.75rem;padding:0.85rem 1.1rem;border-bottom:1px solid var(--border);background:rgba(255,64,129,0.04)}
.mistake-num{font-family:var(--mono);font-size:0.68rem;color:var(--text-dim);flex-shrink:0}
.mistake-title{font-size:0.88rem;font-weight:600;color:var(--text);flex:1}
.mistake-body{padding:1rem 1.1rem;display:flex;flex-direction:column;gap:0.75rem}
.mistake-cols{display:grid;grid-template-columns:1fr 1fr;gap:0.75rem}
@media(max-width:560px){.mistake-cols{grid-template-columns:1fr}}
.mistake-col-lbl{font-size:0.65rem;font-family:var(--mono);color:var(--text-dim);text-transform:uppercase;letter-spacing:0.1em;margin-bottom:0.4rem}

.interview-list{display:flex;flex-direction:column;gap:0.6rem;margin:1rem 0}
.interview-item{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:border-color 0.15s}
.interview-item:hover{border-color:rgba(0,229,255,0.2)}
.interview-item details summary{padding:0.9rem 1.1rem;cursor:pointer;font-size:0.9rem;font-weight:600;color:var(--text);list-style:none;display:flex;align-items:flex-start;gap:0.6rem}
.interview-item details summary::-webkit-details-marker{display:none}
.interview-q-num{font-family:var(--mono);font-size:0.68rem;color:var(--cyan);flex-shrink:0;padding-top:0.18rem}
.interview-q-text{flex:1}
.interview-toggle{margin-left:auto;font-size:0.9rem;color:var(--cyan);flex-shrink:0;padding-top:0.1rem}
.interview-item details[open] summary{color:var(--cyan)}
.interview-body{padding:0.75rem 1.1rem 1rem;font-size:0.88rem;color:var(--text-muted);line-height:1.75;border-top:1px solid var(--border)}
.interview-body code,.tip-body code{font-family:var(--mono);background:var(--bg3);padding:0.1em 0.35em;border-radius:4px;color:var(--cyan);font-size:0.82em}
.interview-tier{font-size:0.65rem;font-family:var(--mono);text-transform:uppercase;letter-spacing:0.08em;padding:0.15rem 0.5rem;border-radius:999px;margin:1.5rem 0 0.75rem;display:inline-block}
.interview-tier.beginner{background:var(--green-dim);color:var(--green);border:1px solid rgba(124,77,255,0.3)}
.interview-tier.intermediate{background:var(--amber-dim);color:var(--amber);border:1px solid rgba(255,179,0,0.3)}
.interview-tier.advanced{background:var(--cyan-dim);color:var(--cyan);border:1px solid rgba(0,229,255,0.3)}

.tip-list{display:flex;flex-direction:column;gap:0.75rem;margin:1rem 0}
.tip-item{display:flex;gap:1rem;padding:1rem 1.1rem;background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);align-items:flex-start}
.tip-icon{font-size:1.2rem;flex-shrink:0;padding-top:0.1rem}
.tip-body h4{font-size:0.88rem;font-weight:700;margin-bottom:0.25rem;color:var(--text)}
.tip-body p{font-size:0.83rem;color:var(--text-muted);line-height:1.65;margin:0}

.scenario-list{display:flex;flex-direction:column;gap:1rem;margin:1rem 0}
.scenario-item{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:1.25rem 1.4rem}
.scenario-head{display:flex;align-items:center;gap:0.6rem;margin-bottom:0.6rem;flex-wrap:wrap}
.scenario-num{font-family:var(--mono);font-size:0.7rem;color:var(--green);background:var(--green-dim);border:1px solid rgba(124,77,255,0.3);border-radius:6px;padding:0.15rem 0.5rem}
.scenario-domain{font-family:var(--mono);font-size:0.65rem;color:var(--text-dim);text-transform:uppercase;letter-spacing:0.06em}
.scenario-title{font-size:0.95rem;font-weight:700;color:var(--text)}
.scenario-problem{font-size:0.85rem;color:var(--text-muted);margin-bottom:0.75rem;line-height:1.6}

.takeaway-list{display:flex;flex-direction:column;gap:0.6rem;margin:1rem 0 1.5rem}
.takeaway-item{display:flex;gap:0.75rem;align-items:flex-start;font-size:0.9rem;color:var(--text);line-height:1.6}
.takeaway-check{color:var(--green);font-weight:700;flex-shrink:0}
.revision-box{background:linear-gradient(135deg,var(--bg2),var(--bg3));border:1px solid var(--border);border-left:4px solid var(--green);border-radius:var(--radius);padding:1.5rem}
.revision-box h3{font-size:0.95rem;font-weight:700;margin-bottom:0.9rem;color:var(--green)}
.revision-grid{display:grid;grid-template-columns:1fr 1fr;gap:0.6rem 1.5rem}
@media(max-width:560px){.revision-grid{grid-template-columns:1fr}}
.revision-row{display:flex;justify-content:space-between;gap:0.75rem;font-size:0.83rem;padding:0.4rem 0;border-bottom:1px dashed var(--border)}
.revision-row span:first-child{color:var(--text-muted)}
.revision-row span:last-child{font-family:var(--mono);color:var(--cyan);font-weight:600;text-align:right}

.related-sec{padding:3rem 0 2rem}
.related-sec h2{font-size:1.4rem;font-weight:700;margin-bottom:0.5rem}
.related-sec p{font-size:0.88rem;color:var(--text-muted);margin-bottom:1.25rem}
.related-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(162px,1fr));gap:0.75rem}
.related-card{display:flex;align-items:center;gap:0.65rem;padding:0.75rem 0.9rem;background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);text-decoration:none;color:var(--text);transition:all 0.15s}
.related-card:hover{border-color:var(--green);background:var(--green-dim);color:var(--green)}
.related-card-icon{font-size:1rem;flex-shrink:0;width:20px;text-align:center}
.related-card-text{font-size:0.83rem;font-weight:600}

.flow-box{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:1.1rem 1.25rem;margin-bottom:0.85rem;position:relative}
.flow-box .flow-q{font-family:var(--mono);font-size:0.8rem;color:var(--cyan);font-weight:700;margin-bottom:0.4rem}
.flow-box .flow-a{font-size:0.85rem;color:var(--text-muted);line-height:1.6}
.bar-row{display:flex;align-items:center;gap:0.75rem;margin-bottom:0.65rem}
.bar-label{width:120px;flex-shrink:0;font-family:var(--mono);font-size:0.75rem;color:var(--text-muted)}
.bar-track{flex:1;height:20px;background:var(--bg3);border-radius:6px;overflow:hidden;border:1px solid var(--border)}
.bar-fill{height:100%;border-radius:6px;display:flex;align-items:center;justify-content:flex-end;padding-right:0.5rem;font-family:var(--mono);font-size:0.65rem;font-weight:700;color:#000;transition:width 0.6s ease}
.roadmap-tier{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:1.1rem 1.25rem;margin-bottom:0.85rem}
.roadmap-tier h4{font-family:var(--mono);font-size:0.8rem;text-transform:uppercase;letter-spacing:0.08em;margin-bottom:0.6rem}
.roadmap-chip-row{display:flex;flex-wrap:wrap;gap:0.4rem}
.roadmap-chip{font-family:var(--mono);font-size:0.78rem;padding:0.3rem 0.7rem;border-radius:6px;background:var(--bg3);color:var(--text);border:1px solid var(--border)}
.query-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:1.25rem 1.4rem;margin-bottom:1rem}
.query-head{display:flex;align-items:center;gap:0.6rem;margin-bottom:0.5rem}
.query-num{font-family:var(--mono);font-size:0.7rem;color:var(--cyan);background:var(--cyan-dim);border:1px solid rgba(0,229,255,0.3);border-radius:6px;padding:0.15rem 0.5rem}
.query-title{font-size:0.95rem;font-weight:700;color:var(--text)}
.query-schema{font-family:var(--mono);font-size:0.78rem;color:var(--text-muted);background:var(--bg3);border:1px solid var(--border);border-radius:8px;padding:0.6rem 0.85rem;margin-bottom:0.6rem}
.query-problem{font-size:0.85rem;color:var(--text-muted);margin-bottom:0.6rem;line-height:1.6}