.proj-detail-hero {
      background: linear-gradient(135deg, #1a5c35 0%, #27ae60 100%);
      padding: 50px 0 40px;
      color: #fff;
    }
    .proj-detail-hero .badge-level {
      display: inline-block;
      background: rgba(255,255,255,0.2);
      color: #fff;
      font-size: 0.78rem;
      font-weight: 700;
      letter-spacing: 1px;
      text-transform: uppercase;
      padding: 5px 16px;
      border-radius: 50px;
      margin-bottom: 16px;
    }
    .proj-detail-hero h1 { font-size: clamp(1.8rem, 4vw, 2.8rem); font-weight: 800; margin-bottom: 12px; }
    .proj-detail-hero p { font-size: 1.05rem; color: rgba(255,255,255,0.85); max-width: 600px; line-height: 1.7; }
    .proj-detail-hero .hero-meta { display: flex; gap: 24px; flex-wrap: wrap; margin-top: 20px; }
    .proj-detail-hero .hero-meta span { font-size: 0.85rem; color: rgba(255,255,255,0.75); display: flex; align-items: center; gap: 6px; }
    .proj-back { display: inline-flex; align-items: center; gap: 6px; color: rgba(255,255,255,0.75); text-decoration: none; font-size: 0.88rem; margin-bottom: 20px; transition: color 0.2s; }
    .proj-back:hover { color: #fff; }
    .proj-content { padding: 50px 0; }
    .proj-section-title { font-size: 1.4rem; font-weight: 700; color: var(--text-blue); margin-bottom: 18px; padding-bottom: 10px; border-bottom: 2px solid rgba(37,38,94,0.08); }
    body.dark-theme .proj-section-title { color: #fff; border-color: rgba(255,255,255,0.08); }
    .learn-list { list-style: none; padding: 0; }
    .learn-list li { display: flex; align-items: flex-start; gap: 12px; padding: 10px 0; border-bottom: 1px solid rgba(37,38,94,0.05); font-size: 0.95rem; color: #555; line-height: 1.6; }
    body.dark-theme .learn-list li { color: #bbb; border-color: rgba(255,255,255,0.05); }
    .learn-list li i { color: #27ae60; margin-top: 3px; flex-shrink: 0; }
    .step-card { background: var(--white); border-radius: 12px; padding: 24px; margin-bottom: 20px; border: 1px solid rgba(37,38,94,0.07); border-left: 4px solid #27ae60; box-shadow: 0 2px 8px rgba(37,38,94,0.05); }
    body.dark-theme .step-card { background: #1e1e38; border-color: rgba(255,255,255,0.07); border-left-color: #27ae60; }
    .feat-icon { font-size: 1.3rem; margin-bottom: 10px; }
    .step-card h3 { font-size: 1.05rem; font-weight: 700; color: var(--text-blue); margin-bottom: 8px; }
    body.dark-theme .step-card h3 { color: #fff; }
    .step-card p { font-size: 0.92rem; color: #666; line-height: 1.7; margin-bottom: 0; }
    body.dark-theme .step-card p { color: #aaa; }
    .download-btn { display: inline-flex; align-items: center; gap: 10px; background: #27ae60; color: #fff; padding: 14px 32px; border-radius: 50px; font-weight: 700; font-size: 1rem; text-decoration: none; transition: all 0.3s; box-shadow: 0 4px 15px rgba(39,174,96,0.35); }
    .download-btn:hover { background: #219a55; color: #fff; transform: translateY(-2px); box-shadow: 0 8px 25px rgba(39,174,96,0.45); }
    .download-box { background: linear-gradient(135deg, #f8fff8, #e8f8ee); border: 1px solid rgba(39,174,96,0.2); border-radius: 16px; padding: 36px; text-align: center; margin-top: 10px; }
    body.dark-theme .download-box { background: linear-gradient(135deg, #1a2e1a, #1e3020); border-color: rgba(39,174,96,0.3); }
    .download-box h3 { font-size: 1.3rem; font-weight: 700; color: var(--text-blue); margin-bottom: 8px; }
    body.dark-theme .download-box h3 { color: #fff; }
    .download-box p { color: #666; margin-bottom: 20px; font-size: 0.95rem; }
    body.dark-theme .download-box p { color: #aaa; }
    .proj-nav { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; padding: 30px 0; border-top: 1px solid rgba(37,38,94,0.08); margin-top: 20px; }
    body.dark-theme .proj-nav { border-color: rgba(255,255,255,0.08); }
    .proj-nav a { display: inline-flex; align-items: center; gap: 8px; padding: 10px 24px; border-radius: 50px; font-weight: 600; text-decoration: none; font-size: 0.9rem; transition: all 0.3s; }
    .btn-back-proj { background: rgba(37,38,94,0.07); color: var(--text-blue); }
    body.dark-theme .btn-back-proj { background: rgba(255,255,255,0.08); color: #ccc; }
    .btn-back-proj:hover { background: var(--text-blue); color: #fff; }
    .btn-next-proj { background: #27ae60; color: #fff; }
    .btn-next-proj:hover { background: #219a55; color: #fff; }
    pre code.hljs { border-radius: 0 0 10px 10px; }
    .code-header { background: #1e1e2e; border-radius: 10px 10px 0 0; padding: 10px 16px; display: flex; align-items: center; justify-content: space-between; }
    .code-lang { color: #ccc; font-size: 0.8rem; font-family: monospace; letter-spacing: 0.5px; }
    .code-copy-btn { background: rgba(255,255,255,0.1); border: none; color: #ccc; font-size: 0.78rem; padding: 4px 12px; border-radius: 4px; cursor: pointer; transition: all 0.2s; }
    .code-copy-btn:hover { background: rgba(255,255,255,0.2); color: #fff; }