/* ── 1. HERO — LIGHT ── */
    .page-hero {
      padding: 80px 0 64px;
      position: relative;
      overflow: hidden;
    }

    .page-hero::before {
      content: '';
      position: absolute;
      inset: 0;
      background: radial-gradient(ellipse 65% 55% at 60% 50%, rgba(122, 79, 163, 0.07), transparent 70%);
      pointer-events: none;
    }

    .hero-board-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      border-radius: 99px;
      border: 1px solid rgba(122, 79, 163, 0.25);
      background: var(--purple-pale);
      color: var(--purple);
      font-size: 0.75rem;
      font-weight: 700;
      letter-spacing: .1em;
      text-transform: uppercase;
      margin-bottom: 22px;
    }

    .page-hero h1 {
      font-size: clamp(2.4rem, 4.5vw, 3.8rem);
      font-weight: 700;
      line-height: 1.12;
      color: var(--text-light);
      margin-bottom: 18px;
    }

    .page-hero h1 em {
      font-style: italic;
      color: var(--purple);
    }

    .page-hero .hero-sub {
      font-size: 1rem;
      color: var(--muted-light);
      line-height: 1.8;
      max-width: 500px;
      margin-bottom: 32px;
    }

    .hero-cta-row {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
      margin-bottom: 48px;
    }

    .btn-purple {
      padding: 13px 28px;
      border-radius: 8px;
      background: var(--purple);
      color: #fff;
      font-weight: 600;
      font-size: 0.92rem;
      border: none;
      text-decoration: none;
      display: inline-block;
      
      transition: background .2s;
    }

    .btn-purple:hover {
      background: var(--purple-light);
      color: #fff;
    }

    .btn-outline-purple {
      padding: 12px 26px;
      border-radius: 8px;
      background: transparent;
      color: var(--purple);
      font-weight: 600;
      font-size: 0.92rem;
      border: 1.5px solid rgba(122, 79, 163, 0.35);
      text-decoration: none;
      display: inline-block;
      
      transition: all .2s;
    }

    .btn-outline-purple:hover {
      background: var(--purple-pale);
      color: var(--purple);
    }

    /* hero right image card */
    .hero-card {
      background: #fff;
      border: 1px solid rgba(122, 79, 163, 0.15);
      border-radius: 18px;
      padding: 32px;
      box-shadow: 0 8px 40px rgba(122, 79, 163, 0.08);
      width: 100%;
    }

    .hero-stat-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
      margin-bottom: 22px;
    }

    .hero-stat {
      padding: 18px 16px;
      border: 1px solid rgba(122, 79, 163, 0.12);
      border-radius: 12px;
      background: var(--purple-pale);
      text-align: center;
    }

    .hero-stat .num {
      
      font-size: 2.2rem;
      font-weight: 700;
      color: var(--purple);
      line-height: 1;
    }

    .hero-stat .lbl {
      font-size: 0.74rem;
      color: var(--muted-light);
      margin-top: 4px;
      line-height: 1.4;
    }

    .hero-tag-row {
      display: flex;
      gap: 8px;
      flex-wrap: wrap;
    }

    .htag {
      padding: 5px 13px;
      border-radius: 6px;
      font-size: 0.75rem;
      font-weight: 600;
      background: var(--gold-pale);
      color: #7a5a10;
      border: 1px solid rgba(201, 168, 76, 0.3);
    }

    /* ── 2. QUOTE — DARK ── */
    .quote-sec {
      padding: 52px 0;
    }

    .quote-sec blockquote {
      max-width: 700px;
      margin: 0 auto;
      text-align: center;
      
      font-size: clamp(1.45rem, 2.5vw, 2rem);
      font-style: italic;
      line-height: 1.55;
    }

    .q-mark {
      font-size: 5rem;
      line-height: 0.1;
      color: rgba(201, 168, 76, 0.3);
      display: block;
      margin-bottom: 18px;
    }

    .q-attr {
      display: block;
      margin-top: 16px;
      
      font-size: 0.78rem;
      font-style: normal;
      font-weight: 600;
      letter-spacing: .12em;
      color: var(--gold);
      text-transform: uppercase;
    }

    /* ── 3. OVERVIEW — LIGHT2 ── */
    .overview {
      padding: 86px 0;
    }

    .overview h2 {
      font-size: clamp(2rem, 3.5vw, 3rem);
      font-weight: 700;
      line-height: 1.15;
      margin-bottom: 20px;
      color: var(--text-light);
    }

    .overview h2 em {
      font-style: italic;
      color: var(--purple);
    }

    .overview p {
      color: var(--muted-light);
      line-height: 1.85;
      margin-bottom: 16px;
      font-size: 0.96rem;
    }

    .overview p:last-child {
      margin-bottom: 0;
    }

    .highlight-light {
      border-left: 3px solid var(--purple);
      background: var(--purple-pale);
      border-radius: 0 10px 10px 0;
      padding: 18px 22px;
      margin-top: 22px;
    }

    .highlight-light p {
      color: var(--purple);
      font-size: 0.92rem;
      font-style: italic;
      margin: 0;
    }

    .why-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
      margin-top: 8px;
    }

    .why-list li {
      display: flex;
      gap: 12px;
      align-items: flex-start;
      font-size: 0.92rem;
      color: var(--muted-light);
      line-height: 1.7;
    }

    .why-dot {
      width: 22px;
      height: 22px;
      border-radius: 50%;
      background: var(--purple-pale);
      color: var(--purple);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.7rem;
      flex-shrink: 0;
      margin-top: 1px;
    }

    /* ── 4. PAPERS — DARK ── */
    .papers {
      padding: 86px 0;
    }

    .papers h2 {
      font-size: clamp(2rem, 3vw, 2.8rem);
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 10px;
    }

    .papers h2 em {
      font-style: italic;
      color: var(--gold);
    }

    .papers-intro {
      color: var(--muted-dark);
      max-width: 540px;
      margin-bottom: 48px;
      line-height: 1.8;
      font-size: 0.96rem;
    }

    .paper-cards {
      display: flex;
      flex-direction: column;
      gap: 18px;
    }

    .paper-card {
      display: flex;
      gap: 22px;
      align-items: flex-start;
      padding: 28px;
      border: 1px solid var(--border-dark);
      border-radius: 14px;
      background: rgba(255, 255, 255, 0.025);
    }

    .paper-card:hover {
      border-color: rgba(201, 168, 76, 0.3);
    }

    .paper-badge {
      padding: 6px 16px;
      border-radius: 8px;
      background: rgba(201, 168, 76, 0.12);
      color: var(--gold);
      font-size: 0.78rem;
      font-weight: 700;
      letter-spacing: .06em;
      white-space: nowrap;
      flex-shrink: 0;
      border: 1px solid var(--border-dark);
    }

    .paper-body h5 {
      
      font-size: 0.97rem;
      font-weight: 600;
      color: var(--text-dark);
      margin-bottom: 6px;
    }

    .paper-body p {
      font-size: 0.87rem;
      color: var(--muted-dark);
      line-height: 1.75;
      margin: 0;
    }

    .paper-meta {
      display: flex;
      gap: 8px;
      flex-wrap: wrap;
      margin-top: 10px;
    }

    .paper-tag {
      font-size: 0.72rem;
      padding: 3px 10px;
      border-radius: 4px;
      border: 1px solid var(--border-dark);
      color: var(--dim-dark);
    }

    /* ── 5. WHAT WE COVER — LIGHT ── */
    .cover {
      padding: 86px 0;
    }

    .cover h2 {
      font-size: clamp(2rem, 3vw, 2.8rem);
      font-weight: 700;
      color: var(--text-light);
      margin-bottom: 10px;
    }

    .cover h2 em {
      font-style: italic;
      color: var(--purple);
    }

    .cover-intro {
      color: var(--muted-light);
      max-width: 540px;
      margin-bottom: 48px;
      line-height: 1.8;
      font-size: 0.96rem;
    }

    .cover-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 18px;
    }

    .cover-card {
      padding: 28px;
      border: 1px solid rgba(122, 79, 163, 0.13);
      border-radius: 14px;
      background: #fff;
      transition: border-color .2s, box-shadow .2s;
    }

    .cover-card:hover {
      border-color: rgba(122, 79, 163, 0.3);
      box-shadow: 0 4px 24px rgba(122, 79, 163, 0.07);
    }

    .cover-icon {
      width: 44px;
      height: 44px;
      border-radius: 10px;
      background: var(--purple-pale);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--purple);
      font-size: 1.1rem;
      margin-bottom: 16px;
    }

    .cover-card h4 {
      
      font-size: 1rem;
      font-weight: 600;
      color: var(--text-light);
      margin-bottom: 8px;
    }

    .cover-card p {
      font-size: 0.87rem;
      color: var(--muted-light);
      line-height: 1.75;
      margin: 0;
    }

    /* ── 6. APPROACH — DARK2 ── */
    .approach {
      padding: 86px 0;
    }

    .approach h2 {
      font-size: clamp(2rem, 3vw, 2.8rem);
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 10px;
    }

    .approach h2 em {
      font-style: italic;
      color: var(--gold);
    }

    .approach-intro {
      color: var(--muted-dark);
      max-width: 520px;
      margin-bottom: 52px;
      line-height: 1.8;
    }

    .steps {
      display: flex;
      flex-direction: column;
      gap: 0;
    }

    .step-item {
      display: flex;
      gap: 24px;
      padding-bottom: 36px;
      position: relative;
    }

    .step-item:last-child {
      padding-bottom: 0;
    }

    .step-left {
      display: flex;
      flex-direction: column;
      align-items: center;
      width: 44px;
      flex-shrink: 0;
    }

    .step-num {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      border: 1.5px solid var(--border-dark);
      background: rgba(201, 168, 76, 0.08);
      display: flex;
      align-items: center;
      justify-content: center;
      
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--gold);
      flex-shrink: 0;
    }

    .step-line {
      width: 1px;
      flex: 1;
      background: var(--border-dark);
      margin-top: 8px;
    }

    .step-item:last-child .step-line {
      display: none;
    }

    .step-right {
      padding-top: 8px;
    }

    .step-right h4 {
      
      font-size: 1rem;
      font-weight: 600;
      color: var(--text-dark);
      margin-bottom: 7px;
    }

    .step-right p {
      font-size: 0.87rem;
      color: var(--muted-dark);
      line-height: 1.75;
      margin: 0;
    }

    .approach-aside {
      padding: 32px;
      border: 1px solid var(--border-dark);
      border-radius: 14px;
      background: rgba(255, 255, 255, 0.025);
      height: fit-content;
    }

    .approach-aside h4 {
      
      font-weight: 600;
      color: var(--text-dark);
      margin-bottom: 18px;
      font-size: 1rem;
    }

    .aside-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .aside-list li {
      display: flex;
      gap: 10px;
      font-size: 0.87rem;
      color: var(--muted-dark);
      line-height: 1.65;
    }

    .aside-list li i {
      color: var(--gold);
      font-size: 0.78rem;
      margin-top: 3px;
      flex-shrink: 0;
    }

    .quote-aside {
      margin-top: 24px;
      padding: 20px;
      border-left: 2px solid var(--gold);
      background: rgba(201, 168, 76, 0.05);
      border-radius: 0 8px 8px 0;
    }

    .quote-aside p {
      font-size: 0.88rem;
      color: var(--muted-dark);
      font-style: italic;
      line-height: 1.7;
      margin: 0;
    }

    /* ── 7. WHO IS IT FOR — LIGHT2 ── */
    .who {
      padding: 86px 0;
    }

    .who h2 {
      font-size: clamp(2rem, 3vw, 2.8rem);
      font-weight: 700;
      color: var(--text-light);
      margin-bottom: 10px;
    }

    .who h2 em {
      font-style: italic;
      color: var(--purple);
    }

    .who-intro {
      color: var(--muted-light);
      max-width: 500px;
      margin-bottom: 48px;
      line-height: 1.8;
    }

    .who-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
    }

    .who-card {
      padding: 24px;
      border: 1px solid rgba(122, 79, 163, 0.13);
      border-radius: 12px;
      background: #fff;
      display: flex;
      gap: 14px;
      align-items: flex-start;
    }

    .who-check {
      width: 30px;
      height: 30px;
      border-radius: 50%;
      background: var(--purple-pale);
      color: var(--purple);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.8rem;
      flex-shrink: 0;
      margin-top: 1px;
    }

    .who-card h5 {
      
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-light);
      margin-bottom: 5px;
    }

    .who-card p {
      font-size: 0.84rem;
      color: var(--muted-light);
      line-height: 1.65;
      margin: 0;
    }

    
    .btn-gold {
      padding: 14px 32px;
      border-radius: 8px;
      background: var(--gold);
      color: #0d0a1a;
      font-weight: 600;
      font-size: 0.93rem;
      border: none;
      text-decoration: none;
      display: inline-block;
      
      transition: background .2s;
    }

    .btn-gold:hover {
      background: var(--gold-light);
      color: #0d0a1a;
    }

    .btn-outline-light {
      padding: 13px 28px;
      border-radius: 8px;
      background: transparent;
      color: var(--text-dark);
      font-weight: 600;
      font-size: 0.93rem;
      border: 1.5px solid rgba(255, 255, 255, 0.2);
      text-decoration: none;
      display: inline-block;
      
      transition: border-color .2s;
    }

    .btn-outline-light:hover {
      border-color: rgba(255, 255, 255, 0.4);
      color: var(--text-dark);
    }