.breadcrumb-bar { background:#0d0d14; border-bottom:1px solid #1e1e2e; padding:10px 20px; font-size:0.8rem; color:#6b7280; }
  .breadcrumb-bar a { color:#7c5ff5; text-decoration:none; }
  .page-wrap { max-width:1200px; margin:0 auto; padding:32px 16px 60px; display:grid; grid-template-columns:1fr 268px; gap:24px; align-items:start; }
  .page-title { font-size:1.45rem; font-weight:700; color:#fff; margin:0 0 4px; }
  .page-subtitle { font-size:0.875rem; color:#6b7280; margin:0 0 24px; }
  .card-dark { background:#13131f; border:1px solid #1e1e2e; border-radius:12px; padding:22px; margin-bottom:18px; }
  .card-dark h2 { font-size:1rem; font-weight:700; color:#fff; margin:0 0 14px; }
  .card-dark p { font-size:0.88rem; color:#9ca3af; line-height:1.7; margin:0 0 10px; }
  .card-dark ul { color:#9ca3af; font-size:0.88rem; line-height:1.8; padding-left:20px; margin:0; }
  .card-dark strong { color:#e2e4ec; }
  .sidebar { display:flex; flex-direction:column; gap:14px; }
  .sidebar-card { background:#13131f; border:1px solid #1e1e2e; border-radius:12px; padding:16px 18px; }
  .sidebar-title { font-size:0.78rem; font-weight:700; color:#9ca3af; text-transform:uppercase; letter-spacing:.07em; margin-bottom:12px; }
  .ref-row { display:flex; justify-content:space-between; gap:8px; font-size:0.78rem; padding:5px 0; border-bottom:1px solid #1a1a2a; }
  .ref-row:last-child { border-bottom:none; }
  .ref-l { color:#9ca3af; }
  .ref-r { color:#fff; font-weight:700; }
  .related-item { display:flex; align-items:center; gap:12px; padding:9px 0; text-decoration:none; border-bottom:1px solid #1a1a2a; }
  .related-item:last-child { border-bottom:none; padding-bottom:0; }
  .related-item:hover { opacity:.8; }
  .related-icon { width:32px; height:32px; border-radius:8px; display:flex; align-items:center; justify-content:center; font-size:15px; flex-shrink:0; }
  .related-name { font-size:0.82rem; font-weight:600; color:#e2e4ec; }
  .related-desc { font-size:0.74rem; color:#6b7280; margin-top:1px; }
  .tip-row { display:flex; gap:8px; margin-bottom:9px; align-items:flex-start; }
  .tip-dot { width:6px; height:6px; border-radius:50%; background:#7c5ff5; flex-shrink:0; margin-top:5px; }
  .tip-text { font-size:0.8rem; color:#6b7280; line-height:1.55; }
  .tip-text strong { color:#9ca3af; }
  .form-group { display:flex; flex-direction:column; gap:6px; margin-bottom:14px; }
  .form-label { font-size:0.78rem; font-weight:600; color:#9ca3af; }
  .input-wrap { display:flex; align-items:center; background:#0d0d14; border:1px solid #2a2a40; border-radius:8px; overflow:hidden; transition:border-color .15s,box-shadow .15s; }
  .input-wrap:focus-within { border-color:#7c5ff5; box-shadow:0 0 0 3px rgba(124,95,245,.15); }
  .input-wrap select { flex:1; padding:9px 10px; font-size:0.9rem; font-family:'Inter',sans-serif; color:#e2e4ec; background:transparent; border:none; outline:none; min-width:0; }
  .input-wrap select option { background:#13131f; }
  .section-label { font-size:0.72rem; font-weight:700; color:#6b7280; text-transform:uppercase; letter-spacing:.07em; margin:16px 0 10px; }
  .calc-btn { width:100%; padding:12px; background:linear-gradient(135deg,#7c5ff5,#ec4899); color:#fff; font-size:0.95rem; font-weight:700; border:none; border-radius:9px; cursor:pointer; transition:opacity .14s; font-family:'Inter',sans-serif; }
  .calc-btn:hover { opacity:.88; }
  .slider-group { margin-bottom:14px; }
  .slider-head { display:flex; justify-content:space-between; align-items:center; margin-bottom:6px; }
  .slider-lbl { font-size:0.82rem; font-weight:600; color:#e2e4ec; }
  .slider-val { font-size:0.85rem; font-weight:700; color:#a78bfa; min-width:36px; text-align:right; }
  input[type=range] { width:100%; -webkit-appearance:none; height:6px; background:#1e1e2e; border-radius:3px; outline:none; }
  input[type=range]::-webkit-slider-thumb { -webkit-appearance:none; width:18px; height:18px; border-radius:50%; background:linear-gradient(135deg,#7c5ff5,#ec4899); cursor:pointer; border:2px solid #fff; }
  input[type=range]::-moz-range-thumb { width:18px; height:18px; border-radius:50%; background:linear-gradient(135deg,#7c5ff5,#ec4899); cursor:pointer; border:2px solid #fff; }
  .checkbox-grid { display:grid; grid-template-columns:1fr 1fr; gap:8px; }
  .checkbox-grid label { display:flex; align-items:center; gap:8px; padding:9px 12px; background:#0d0d14; border:1px solid #1e1e2e; border-radius:8px; cursor:pointer; font-size:0.82rem; color:#cbd0db; transition:border-color .14s; }
  .checkbox-grid label:hover { border-color:#7c5ff5; }
  .checkbox-grid input { accent-color:#7c5ff5; width:14px; height:14px; }
  .results-section { display:none; margin-top:18px; }
  .results-section.show { display:block; }
  .grade-hero { background:linear-gradient(135deg,rgba(124,95,245,.15),rgba(236,72,153,.1)); border:1px solid rgba(124,95,245,.25); border-radius:12px; padding:22px 24px; margin-bottom:16px; display:grid; grid-template-columns:1fr 1fr; gap:16px; text-align:center; }
  .hero-label { font-size:0.72rem; font-weight:700; color:#9ca3af; text-transform:uppercase; letter-spacing:.07em; margin-bottom:6px; }
  .hero-val { font-size:2rem; font-weight:700; color:#fff; letter-spacing:-0.5px; }
  .hero-sub { font-size:0.78rem; color:#6b7280; margin-top:4px; }
  .result-grid { display:grid; grid-template-columns:1fr 1fr; gap:10px; margin-bottom:14px; }
  .rbox { background:#0d0d14; border:1px solid #1a1a28; border-radius:9px; padding:12px 14px; }
  .rbox-label { font-size:0.68rem; font-weight:700; color:#4b5563; text-transform:uppercase; letter-spacing:.06em; margin-bottom:4px; }
  .rbox-val { font-size:0.95rem; font-weight:700; color:#e2e4ec; }
  .tip-list { list-style:none; padding:0; margin:0; display:flex; flex-direction:column; gap:8px; }
  .tip-list li { background:#0d0d14; border:1px solid #1e1e2e; border-left:3px solid #22c55e; border-radius:8px; padding:10px 14px; font-size:0.84rem; color:#cbd0db; line-height:1.5; }
  .tip-list li strong { color:#fff; }
  .blog-section { max-width:1200px; margin:0 auto; padding:0 16px 72px; }
  .blog-section-header { display:flex; align-items:center; gap:12px; margin-bottom:28px; }
  .blog-section-badge { font-size:0.68rem; font-weight:700; color:#7c5ff5; text-transform:uppercase; letter-spacing:.1em; background:rgba(124,95,245,.1); border:1px solid rgba(124,95,245,.22); border-radius:20px; padding:4px 12px; }
  .blog-section-title { font-size:1.2rem; font-weight:700; color:#fff; margin:0; }
  .blog-intro { background:#13131f; border:1px solid #1e1e2e; border-radius:12px; padding:22px 24px; margin-bottom:24px; font-size:0.9rem; color:#9ca3af; line-height:1.75; }
  .blog-intro strong { color:#e2e4ec; }
  .blog-intro p { margin:0 0 12px; }
  .blog-intro p:last-child { margin-bottom:0; }
  .blog-grid { display:grid; grid-template-columns:1fr 1fr; gap:16px; margin-bottom:24px; }
  .blog-card { background:#13131f; border:1px solid #1e1e2e; border-radius:12px; padding:20px 22px; }
  .blog-card-icon { width:36px; height:36px; border-radius:9px; background:rgba(124,95,245,.13); border:1px solid rgba(124,95,245,.2); display:flex; align-items:center; justify-content:center; font-size:17px; margin-bottom:13px; }
  .blog-card h3 { font-size:0.92rem; font-weight:700; color:#fff; margin:0 0 8px; }
  .blog-card p { font-size:0.82rem; color:#6b7280; line-height:1.7; margin:0; }
  .faq-item { background:#13131f; border:1px solid #1e1e2e; border-radius:10px; margin-bottom:8px; cursor:pointer; overflow:hidden; }
  .faq-item:hover { border-color:#2c2c42; }
  .faq-q { display:flex; align-items:center; justify-content:space-between; padding:15px 18px; gap:12px; }
  .faq-q-text { font-size:0.88rem; font-weight:600; color:#e2e4ec; }
  .faq-chevron { width:18px; height:18px; color:#7c5ff5; flex-shrink:0; transition:transform .2s; }
  .faq-item.open .faq-chevron { transform:rotate(180deg); }
  .faq-a { max-height:0; overflow:hidden; transition:max-height .3s ease; }
  .faq-a-inner { padding:0 18px 15px; font-size:0.84rem; color:#6b7280; line-height:1.75; border-top:1px solid #1e1e2e; padding-top:13px; }
  .faq-item.open .faq-a { max-height:400px; }
  .faq-a-inner strong { color:#9ca3af; }
  .share-bar { max-width:1200px; margin:0 auto; padding:0 16px 48px; }
  .share-inner { background:#13131f; border:1px solid #1e1e2e; border-radius:12px; padding:20px 24px; display:flex; align-items:center; justify-content:space-between; gap:16px; flex-wrap:wrap; }
  .share-heading { font-size:0.88rem; font-weight:700; color:#e2e4ec; }
  .share-sub { font-size:0.76rem; color:#6b7280; }
  .share-btns { display:flex; gap:8px; flex-wrap:wrap; }
  .share-btn { display:inline-flex; align-items:center; gap:7px; padding:9px 16px; border-radius:8px; font-size:0.82rem; font-weight:700; text-decoration:none; border:none; cursor:pointer; transition:opacity .15s,transform .12s; white-space:nowrap; }
  .share-btn:hover { opacity:.88; transform:translateY(-1px); }
  .share-btn-tw { background:#000; color:#fff; }
  .share-btn-fb { background:#1877f2; color:#fff; }
  .share-btn-wa { background:#25d366; color:#fff; }
  .share-btn svg { width:15px; height:15px; fill:currentColor; flex-shrink:0; }
  .site-footer { text-align:center; padding:24px 16px; font-size:0.8rem; color:#4b5563; border-top:1px solid #1e1e2e; background:#0d0d14; }
  .footer-links { display:flex; justify-content:center; gap:20px; margin-top:8px; flex-wrap:wrap; }
  .footer-links a { color:#4b5563; text-decoration:none; font-size:0.78rem; }
  .footer-links a:hover { color:#9ca3af; }
  @media (max-width:900px) { .page-wrap { grid-template-columns:1fr; } .sidebar { display:grid; grid-template-columns:1fr 1fr; gap:14px; } .blog-grid { grid-template-columns:1fr; } }
  @media (max-width:700px) { .nav-links { display:none; } .hamburger { display:flex; } .page-wrap { padding:20px 14px 40px; } .grade-hero { grid-template-columns:1fr; } .checkbox-grid { grid-template-columns:1fr; } }
  @media (max-width:580px) { .sidebar { grid-template-columns:1fr; } .result-grid { grid-template-columns:1fr; } }