*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

    :root {
      --ink: #0f1117;
      --ink-soft: #3d3f4a;
      --ink-muted: #676a78;
      --cream: #faf9f6;
      --white: #ffffff;
      --accent: #1a56db;
      --accent-light: #e8effe;
      --border: #e4e4e8;
      --gold: #c8973a;
      /* dark theme tokens */
      --dark-bg: #faf9f6;
      --dark-surface: #ffffff;
      --dark-border: #e4e4e8;
      --dark-text: #0f1117;
      --dark-muted: #676a78;
    }

    html { scroll-behavior: smooth; }
    p a { text-decoration: underline; color: var(--accent); }

    body {
      font-family: 'DM Sans', sans-serif;
      background: var(--dark-bg);
      color: var(--dark-text);
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

    /* ── NAV ── */
    nav {
      position: fixed; top: 0; left: 0; right: 0; z-index: 100;
      display: flex; align-items: center; justify-content: space-between;
      padding: 20px 60px;
      background: rgba(250,249,246,0.92);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--dark-border);
      transition: padding 0.3s;
    }
    nav.scrolled { padding: 14px 60px; }
    .nav-logo {
      display: flex; align-items: center; gap: 12px;
      text-decoration: none; color: var(--dark-text);
      font-size: 0.9rem; font-weight: 500;
    }
    .nav-logo-img {
      width: 36px; height: 36px; border-radius: 50%;
      object-fit: cover; border: 1.5px solid var(--dark-border);
    }
    .nav-back {
      font-size: 0.85rem; font-weight: 500;
      color: var(--dark-muted); text-decoration: none;
      display: flex; align-items: center; gap: 6px;
      transition: color 0.2s;
    }
    .nav-back:hover { color: var(--dark-text); }
    .nav-cta {
      background: var(--ink); color: var(--white) !important;
      padding: 9px 22px; border-radius: 6px;
      font-size: 0.875rem; font-weight: 500;
      text-decoration: none; transition: background 0.2s !important;
    }
    .nav-cta:hover { background: var(--accent) !important; }

    /* ── FULL NAV (dropdown + drawer) ── */
    .nav-links-desktop { display: flex; gap: 36px; list-style: none; align-items: center; }
    .nav-links-desktop a { font-size: 0.875rem; font-weight: 500; color: var(--ink-soft); text-decoration: none; letter-spacing: 0.03em; transition: color 0.2s; }
    .nav-links-desktop a:hover { color: var(--accent); }
    .nav-dropdown-wrap { position: relative; list-style: none; }
    .nav-dropdown-btn { display: flex; align-items: center; gap: 5px; font-size: 0.875rem; font-weight: 500; color: var(--ink-soft); cursor: pointer; background: none; border: none; padding: 0; font-family: inherit; transition: color 0.2s; }
    .nav-dropdown-btn:hover, .nav-dropdown-btn.open { color: var(--accent); }
    .nav-dropdown-btn svg { transition: transform 0.2s; }
    .nav-dropdown-btn.open svg { transform: rotate(180deg); }
    .nav-dropdown-menu { position: absolute; top: calc(100% + 14px); left: 50%; transform: translateX(-50%) translateY(-6px); background: var(--white); border: 1px solid var(--border); border-radius: 10px; overflow: hidden; box-shadow: 0 4px 24px rgba(0,0,0,0.1); min-width: 190px; opacity: 0; pointer-events: none; transition: opacity 0.2s, transform 0.2s; z-index: 200; }
    .nav-dropdown-menu.open { opacity: 1; pointer-events: auto; transform: translateX(-50%) translateY(0); }
    .nav-dropdown-item { display: flex; align-items: center; gap: 10px; padding: 12px 16px; text-decoration: none; color: var(--ink-soft); font-size: 0.875rem; font-weight: 500; border-bottom: 1px solid var(--border); transition: background 0.15s, color 0.15s; }
    .nav-dropdown-item:last-child { border-bottom: none; }
    .nav-dropdown-item:hover { background: var(--cream); color: var(--accent); }
    .nav-dropdown-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
    .nav-hamburger { display: none; }
    .nav-drawer { position: fixed; top: 0; right: 0; width: 260px; height: 100vh; background: #fff; z-index: 300; display: flex; flex-direction: column; transform: translateX(100%); transition: transform 0.3s ease; box-shadow: -2px 0 20px rgba(0,0,0,0.12); overflow-y: auto; }
    .nav-drawer.open { transform: translateX(0); }
    .nav-drawer__header { display: flex; align-items: center; justify-content: space-between; padding: 18px 20px; border-bottom: 1px solid var(--border); background: var(--cream); flex-shrink: 0; }
    .nav-drawer__label { font-size: 0.7rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-muted); }
    .nav-drawer__close { width: 30px; height: 30px; border-radius: 50%; background: var(--border); border: none; font-size: 0.85rem; color: var(--ink); cursor: pointer; display: flex; align-items: center; justify-content: center; transition: background 0.2s; }
    .nav-drawer__close:hover { background: var(--ink); color: #fff; }
    .nav-drawer__link { display: block; padding: 14px 20px; font-size: 0.9rem; font-weight: 500; color: var(--ink); text-decoration: none; border-bottom: 1px solid var(--border); transition: color 0.2s, background 0.2s; }
    .nav-drawer__link:hover { color: var(--accent); background: var(--cream); }
    .nav-drawer__group { border-bottom: 1px solid var(--border); }
    .nav-drawer__group-btn { display: flex; align-items: center; justify-content: space-between; width: 100%; padding: 14px 20px; font-size: 0.9rem; font-weight: 500; color: var(--ink-soft); background: none; border: none; font-family: inherit; cursor: pointer; transition: color 0.2s; }
    .nav-drawer__group-btn:hover { color: var(--accent); }
    .nav-drawer__sub { display: none; background: var(--cream); }
    .nav-drawer__sub.open { display: block; }
    .nav-drawer__sublink { display: block; padding: 11px 32px; font-size: 0.82rem; color: var(--ink-soft); text-decoration: none; border-top: 1px solid var(--border); transition: color 0.2s; }
    .nav-drawer__sublink:hover { color: var(--accent); }
    .nav-drawer__cta { display: block; margin: 20px; padding: 12px 20px; border-radius: 8px; background: var(--ink); color: #fff !important; text-align: center; text-decoration: none; font-size: 0.875rem; font-weight: 600; transition: background 0.2s; }
    .nav-drawer__cta:hover { background: var(--accent); }
    .nav-overlay { display: none; position: fixed; inset: 0; background: rgba(15,17,23,0.4); z-index: 299; }
    .nav-overlay.open { display: block; }
    @media (max-width: 900px) {
      nav { padding: 14px 24px; }
      nav.scrolled { padding: 10px 24px; }
      .nav-links-desktop { display: none; }
      .nav-hamburger { display: flex; flex-direction: column; justify-content: center; gap: 5px; width: 38px; height: 38px; background: none; border: none; cursor: pointer; padding: 5px; z-index: 301; }
      .nav-hamburger span { display: block; width: 20px; height: 2px; background: var(--ink); border-radius: 2px; transition: transform 0.28s ease, opacity 0.2s ease; transform-origin: center; }
      .nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
      .nav-hamburger.open span:nth-child(2) { opacity: 0; }
      .nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
    }

    /* ── HERO ── */
    .cs-hero {
      min-height: 92vh;
      display: flex; flex-direction: column; justify-content: flex-end;
      padding: 140px 60px 80px;
      position: relative; overflow: hidden;
      background: var(--dark-bg);
    }

    .cs-hero__bg {
      position: absolute; inset: 0; z-index: 0;
      background:
        radial-gradient(ellipse 60% 50% at 80% 20%, rgba(26,86,219,0.07) 0%, transparent 60%),
        radial-gradient(ellipse 40% 40% at 20% 80%, rgba(200,151,58,0.04) 0%, transparent 55%);
    }

    /* Subtle grid texture */
    .cs-hero__bg::after {
      content: '';
      position: absolute; inset: 0;
      background-image:
        linear-gradient(rgba(0,0,0,0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,0,0,0.035) 1px, transparent 1px);
      background-size: 60px 60px;
    }

    .cs-hero__inner {
      position: relative; z-index: 1;
      max-width: 900px;
    }

    .cs-hero__eyebrow {
      display: flex; align-items: center; gap: 10px;
      margin-bottom: 28px;
    }
    .cs-hero__label {
      font-size: 0.72rem; font-weight: 600; letter-spacing: 0.14em;
      text-transform: uppercase; color: var(--accent);
      background: rgba(26,86,219,0.15); border: 1px solid rgba(26,86,219,0.3);
      padding: 5px 14px; border-radius: 20px;
    }
    .cs-hero__market {
      font-size: 0.72rem; font-weight: 600; letter-spacing: 0.12em;
      text-transform: uppercase; color: var(--gold);
      background: rgba(200,151,58,0.1); border: 1px solid rgba(200,151,58,0.25);
      padding: 5px 14px; border-radius: 20px;
    }

    .cs-hero__logo {
      display: inline-flex;
      align-items: center;
      background: rgba(255,255,255,0.96);
      padding: 10px 20px;
      border-radius: 10px;
      margin-bottom: 24px;
    }
    .cs-hero__logo-img {
      max-height: 36px;
      width: auto;
      max-width: 150px;
      object-fit: contain;
      display: block;
    }
    .cs-hero__domain {
      font-size: 0.9rem; font-weight: 500;
      color: var(--accent); letter-spacing: 0.03em;
      margin-bottom: 16px;
    }

    .cs-hero__title {
      font-family: 'Playfair Display', serif;
      font-size: clamp(2.4rem, 5vw, 4rem);
      font-weight: 800; line-height: 1.1;
      letter-spacing: -0.025em;
      color: var(--dark-text);
      margin-bottom: 28px;
    }
    .cs-hero__title em {
      font-style: italic; color: var(--accent);
    }

    .cs-hero__summary {
      font-size: 1.05rem; line-height: 1.75;
      color: var(--dark-muted); max-width: 620px;
      margin-bottom: 52px;
    }

    /* ── Hero metrics bar ── */
    .cs-hero__metrics {
      display: flex; gap: 0;
      border: 1px solid var(--border);
      border-radius: 16px; overflow: hidden;
      background: var(--white);
      width: fit-content;
    }
    .cs-hero__metric {
      padding: 24px 40px;
      border-right: 1px solid var(--dark-border);
      min-width: 160px;
    }
    .cs-hero__metric:last-child { border-right: none; }
    .cs-hero__metric-val {
      font-family: 'Playfair Display', serif;
      font-size: 2.4rem; font-weight: 800;
      line-height: 1; letter-spacing: -0.04em;
      color: var(--dark-text);
      display: block; margin-bottom: 6px;
    }
    .cs-hero__metric-val--accent { color: var(--accent); }
    .cs-hero__metric-val--gold { color: var(--gold); }
    .cs-hero__metric-lbl {
      font-size: 0.78rem; color: var(--dark-muted);
      font-weight: 500; line-height: 1.4;
    }

    /* ── DIVIDER ── */
    .divider {
      height: 1px; background: var(--dark-border);
      margin: 0 60px;
    }

    /* ── SECTION COMMONS ── */
    .section {
      padding: 96px 60px;
    }
    .section--light {
      background: var(--cream);
      color: var(--ink);
    }
    .section--dark {
      background: #f5f5f8;
    }
    .section__label {
      font-size: 0.72rem; font-weight: 600; letter-spacing: 0.14em;
      text-transform: uppercase; color: var(--accent);
      margin-bottom: 12px; display: block;
    }
    .section--light .section__label { color: var(--accent); }
    .section__title {
      font-family: 'Playfair Display', serif;
      font-size: clamp(1.8rem, 3vw, 2.4rem);
      font-weight: 700; line-height: 1.2;
      letter-spacing: -0.02em;
      color: var(--dark-text);
      margin-bottom: 16px;
    }
    .section--light .section__title { color: var(--ink); }
    .section__intro {
      font-size: 1rem; line-height: 1.75;
      color: var(--dark-muted); max-width: 560px;
      margin-bottom: 52px;
    }
    .section--light .section__intro { color: var(--ink-soft); }

    /* ── CHALLENGE / CONTEXT ── */
    .challenge-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 2px;
      background: var(--border);
      border-radius: 16px; overflow: hidden;
      margin-top: 48px;
    }
    .challenge-card {
      background: var(--white);
      padding: 36px 32px;
    }
    .challenge-card__icon {
      font-size: 1.6rem; margin-bottom: 16px;
    }
    .challenge-card__title {
      font-family: 'Playfair Display', serif;
      font-size: 1.1rem; font-weight: 700;
      color: var(--dark-text); margin-bottom: 10px;
    }
    .challenge-card__desc {
      font-size: 0.9rem; line-height: 1.7;
      color: var(--dark-muted);
    }

    /* ── WHAT I DID — timeline ── */
    .timeline {
      display: flex; flex-direction: column;
      gap: 0; margin-top: 48px;
      position: relative;
    }
    .timeline::before {
      content: '';
      position: absolute; left: 23px; top: 0; bottom: 0;
      width: 1px; background: var(--border);
    }
    .timeline-item {
      display: grid;
      grid-template-columns: 48px 1fr;
      gap: 28px;
      padding-bottom: 44px;
      position: relative;
    }
    .timeline-item:last-child { padding-bottom: 0; }
    .timeline-dot {
      width: 48px; height: 48px; border-radius: 50%;
      background: var(--white);
      border: 1.5px solid var(--border);
      display: flex; align-items: center; justify-content: center;
      font-size: 1.1rem; flex-shrink: 0;
      position: relative; z-index: 1;
      transition: border-color 0.2s, background 0.2s;
    }
    .timeline-item:hover .timeline-dot {
      border-color: var(--accent);
      background: rgba(26,86,219,0.1);
    }
    .timeline-content { padding-top: 10px; }
    .timeline-step {
      font-size: 0.7rem; font-weight: 600; letter-spacing: 0.12em;
      text-transform: uppercase; color: var(--accent);
      margin-bottom: 6px;
    }
    .timeline-title {
      font-family: 'Playfair Display', serif;
      font-size: 1.2rem; font-weight: 700;
      color: var(--dark-text); margin-bottom: 10px;
    }
    .timeline-desc {
      font-size: 0.9rem; line-height: 1.7;
      color: var(--dark-muted); max-width: 600px;
    }
    .timeline-tags {
      display: flex; flex-wrap: wrap; gap: 6px; margin-top: 14px;
    }
    .timeline-tag {
      font-size: 0.72rem; font-weight: 500;
      padding: 4px 12px; border-radius: 20px;
      background: rgba(26,86,219,0.1);
      border: 1px solid rgba(26,86,219,0.2);
      color: #7baaf7;
    }

    /* ── RESULTS ── */
    .results-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2px;
      background: var(--border);
      border-radius: 16px; overflow: hidden;
      margin-top: 48px;
    }
    .result-card {
      background: var(--white);
      padding: 40px 32px;
    }
    .result-card__num {
      font-family: 'Playfair Display', serif;
      font-size: 3rem; font-weight: 800;
      letter-spacing: -0.04em; line-height: 1;
      margin-bottom: 8px; display: block;
    }
    .result-card__num--accent { color: var(--accent); }
    .result-card__num--gold { color: var(--gold); }
    .result-card__num--ink { color: var(--ink); }
    .result-card__label {
      font-size: 0.85rem; font-weight: 600;
      color: var(--ink); margin-bottom: 8px;
    }
    .result-card__desc {
      font-size: 0.82rem; line-height: 1.65;
      color: var(--ink-soft);
    }

    /* ── KEY TAKEAWAYS ── */
    .takeaways-list {
      display: flex; flex-direction: column;
      gap: 16px; margin-top: 48px;
      max-width: 780px;
    }
    .takeaway {
      display: flex; gap: 18px; align-items: flex-start;
      padding: 24px 28px;
      background: var(--white);
      border: 1px solid var(--border);
      border-radius: 12px;
      transition: border-color 0.2s, transform 0.2s;
    }
    .takeaway:hover {
      border-color: rgba(26,86,219,0.4);
      transform: translateX(4px);
    }
    .takeaway__num {
      font-family: 'Playfair Display', serif;
      font-size: 1.4rem; font-weight: 800;
      color: var(--accent); opacity: 0.5;
      flex-shrink: 0; line-height: 1; margin-top: 2px;
    }
    .takeaway__text {
      font-size: 0.95rem; line-height: 1.7;
      color: var(--dark-muted);
    }
    .takeaway__text strong {
      color: var(--dark-text); font-weight: 600;
    }

    /* ── CTA SECTION ── */
    .cta-section {
      padding: 96px 60px;
      text-align: center;
      background: var(--cream);
      position: relative; overflow: hidden;
    }
    .cta-section::before {
      content: '';
      position: absolute; inset: 0;
      background: radial-gradient(ellipse 60% 60% at 50% 100%, rgba(26,86,219,0.14) 0%, transparent 65%);
      pointer-events: none;
    }
    .cta-section__inner { position: relative; z-index: 1; }
    .cta-section__title {
      font-family: 'Playfair Display', serif;
      font-size: clamp(1.8rem, 3.5vw, 2.8rem);
      font-weight: 700; line-height: 1.2;
      letter-spacing: -0.02em;
      color: var(--dark-text);
      margin-bottom: 16px;
    }
    .cta-section__sub {
      font-size: 1rem; line-height: 1.7;
      color: var(--dark-muted); max-width: 480px;
      margin: 0 auto 40px;
    }
    .cta-buttons {
      display: flex; gap: 14px; justify-content: center;
      flex-wrap: wrap;
    }
    .btn-primary {
      background: var(--accent); color: var(--white);
      padding: 15px 36px; border-radius: 8px;
      font-size: 0.95rem; font-weight: 500;
      text-decoration: none;
      transition: background 0.2s, transform 0.15s;
    }
    .btn-primary:hover { background: #1344b8; transform: translateY(-2px); }
    .btn-secondary {
      background: transparent; color: var(--dark-text);
      padding: 15px 36px; border-radius: 8px;
      border: 1.5px solid var(--dark-border);
      font-size: 0.95rem; font-weight: 500;
      text-decoration: none;
      transition: border-color 0.2s, transform 0.15s;
    }
    .btn-secondary:hover { border-color: rgba(255,255,255,0.3); transform: translateY(-2px); }

    /* ── FOOTER ── */
    footer {
      background: var(--white);
      border-top: 1px solid var(--border);
      padding: 36px 60px;
      display: flex; align-items: center; gap: 24px; flex-wrap: wrap;
    }
    .footer-name {
      font-family: 'Playfair Display', serif;
      font-size: 1rem; font-weight: 600; color: var(--dark-text);
    }
    .footer-copy { font-size: 0.8rem; color: var(--dark-muted); }
    .footer-sitemap { font-size: 0.8rem; color: var(--dark-muted); text-decoration: none; transition: color 0.2s; }
    .footer-sitemap:hover { color: var(--accent); }

    /* ── SCROLL REVEAL ── */
    .reveal {
      opacity: 0; transform: translateY(28px);
      transition: opacity 0.65s ease, transform 0.65s ease;
    }
    .reveal.visible { opacity: 1; transform: translateY(0); }
    .reveal-delay-1 { transition-delay: 0.1s; }
    .reveal-delay-2 { transition-delay: 0.2s; }
    .reveal-delay-3 { transition-delay: 0.3s; }

    /* ── MOBILE ── */
    @media (max-width: 900px) {
      nav { padding: 16px 24px; }
      nav.scrolled { padding: 12px 24px; }
      .nav-back span { display: none; }

      .cs-hero { padding: 120px 24px 60px; min-height: auto; }
      .cs-hero__metrics {
        flex-direction: column; width: 100%;
        border-radius: 12px;
      }
      .cs-hero__metric {
        border-right: none;
        border-bottom: 1px solid var(--dark-border);
        padding: 20px 24px;
      }
      .cs-hero__metric:last-child { border-bottom: none; }

      .section { padding: 64px 24px; }
      .divider { margin: 0 24px; }

      .challenge-grid { grid-template-columns: 1fr; }
      .results-grid { grid-template-columns: 1fr; }

      .timeline::before { left: 19px; }
      .timeline-item { grid-template-columns: 40px 1fr; gap: 20px; }
      .timeline-dot { width: 40px; height: 40px; font-size: 0.95rem; }

      footer {
        flex-direction: column; gap: 12px;
        text-align: center; padding: 28px 24px;
      }
    }

    @media (max-width: 600px) {
      .cs-hero__title { font-size: 2rem; }
      .cs-hero__metric-val { font-size: 1.8rem; }
      .result-card__num { font-size: 2.2rem; }
      .cta-section { padding: 64px 24px; }
    }

/* ── AVAILABILITY CHIP ── */
.avail-chip {
  position: fixed; bottom: 28px; right: 28px; z-index: 500;
  display: flex; align-items: center; gap: 10px;
  background: #0f1117; color: #ffffff;
  padding: 12px 20px 12px 16px; border-radius: 100px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.22);
  font-size: 0.82rem; font-weight: 500;
  text-decoration: none;
  opacity: 0; transform: translateY(16px);
  animation: chipSlideUp 0.5s 1.8s cubic-bezier(0.34,1.56,0.64,1) forwards;
  transition: transform 0.2s, box-shadow 0.2s;
}
.avail-chip:hover { transform: translateY(-3px); box-shadow: 0 14px 40px rgba(0,0,0,0.28); }
.avail-chip__dot { width: 8px; height: 8px; border-radius: 50%; background: #22c55e; flex-shrink: 0; animation: chipPulse 2s infinite; }
.avail-chip__text { color: rgba(255,255,255,0.72); }
.avail-chip__cta { color: #fff; font-weight: 600; border-left: 1px solid rgba(255,255,255,0.18); padding-left: 10px; margin-left: 2px; }
@keyframes chipSlideUp { to { opacity: 1; transform: translateY(0); } }
@keyframes chipPulse { 0%,100% { opacity:1; } 50% { opacity:0.4; } }

/* ── READING TIME BADGE ── */
.cs-hero__read-time {
  font-size: 0.72rem; font-weight: 500; letter-spacing: 0.05em;
  color: var(--dark-muted);
  border: 1px solid var(--dark-border);
  padding: 5px 14px; border-radius: 20px;
  background: transparent;
}

/* ── CASE STUDY PREV / NEXT NAV ── */
.cs-nav-wrap {
  padding: 0 60px 48px;
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px;
}
.cs-nav-wrap--single { grid-template-columns: 1fr; max-width: 360px; }
.cs-nav-link {
  display: flex; flex-direction: column; gap: 5px;
  padding: 20px 24px; border-radius: 12px;
  background: var(--white); border: 1.5px solid var(--border);
  text-decoration: none;
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}
.cs-nav-link:hover {
  border-color: var(--accent); transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(26,86,219,0.08);
}
.cs-nav-link--next { text-align: right; }
.cs-nav-link__dir {
  font-size: 0.68rem; font-weight: 600; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--dark-muted);
}
.cs-nav-link__title {
  font-family: 'Playfair Display', serif;
  font-size: 1.05rem; font-weight: 700; color: var(--dark-text);
}
.cs-nav-link__label { font-size: 0.75rem; color: var(--dark-muted); }
@media (max-width: 900px) {
  .cs-nav-wrap { padding: 0 24px 40px; grid-template-columns: 1fr; }
  .cs-nav-wrap--single { max-width: 100%; }
}

/* ── READING PROGRESS BAR ── */
.progress-bar {
  position: fixed; top: 0; left: 0; z-index: 200;
  height: 3px; width: 0%;
  background: var(--accent);
  transition: width 0.08s linear;
  pointer-events: none;
  border-radius: 0 2px 2px 0;
}

/* ── BACK TO TOP ── */
.back-to-top {
  position: fixed; bottom: 90px; right: 28px; z-index: 400;
  width: 42px; height: 42px; border-radius: 50%;
  background: var(--white); border: 1.5px solid var(--border);
  color: var(--dark-text); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 16px rgba(0,0,0,0.10);
  opacity: 0; transform: translateY(10px);
  transition: opacity 0.3s, transform 0.3s, border-color 0.2s, box-shadow 0.2s;
  pointer-events: none;
}
.back-to-top.visible { opacity: 1; transform: translateY(0); pointer-events: auto; }
.back-to-top:hover { border-color: var(--accent); box-shadow: 0 6px 20px rgba(26,86,219,0.18); }
@media (max-width: 900px) {
  .back-to-top { bottom: 84px; right: 16px; width: 38px; height: 38px; }
}

/* ── SHARE BAR ── */
.share-bar-wrap {
  padding: 0 60px 64px;
  display: flex; justify-content: center;
}
.share-bar {
  display: flex; align-items: center; gap: 20px;
  padding: 20px 28px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 14px;
  flex-wrap: wrap;
}
.share-bar__label {
  font-size: 0.85rem; font-weight: 500;
  color: var(--dark-muted); flex-shrink: 0;
}
.share-bar__btns {
  display: flex; gap: 10px; flex-wrap: wrap;
}
.share-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 9px 18px; border-radius: 8px;
  font-size: 0.82rem; font-weight: 500;
  text-decoration: none; cursor: pointer;
  border: 1.5px solid var(--border);
  background: transparent; font-family: inherit;
  transition: all 0.2s;
}
.share-btn--linkedin { color: #0a66c2; border-color: rgba(10,102,194,0.3); }
.share-btn--linkedin:hover { background: rgba(10,102,194,0.08); border-color: rgba(10,102,194,0.5); }
.share-btn--native { color: var(--accent); border-color: rgba(26,86,219,0.3); }
.share-btn--native:hover { background: rgba(26,86,219,0.08); border-color: rgba(26,86,219,0.5); }
.share-btn--copy { color: var(--dark-muted); }
.share-btn--copy:hover { color: var(--dark-text); border-color: rgba(15,17,23,0.3); }
.share-btn--copy.copied { color: #16a34a; border-color: rgba(22,163,74,0.4); background: rgba(22,163,74,0.07); }
@media (max-width: 900px) {
  .share-bar-wrap { padding: 0 24px 48px; }
  .share-bar { gap: 16px; padding: 16px 20px; }
}

/* ── BREADCRUMB ── */
.breadcrumb {
  position: static; background: transparent;
  backdrop-filter: none; -webkit-backdrop-filter: none;
  padding: 0; border: none; z-index: auto;
  margin-bottom: 22px; display: block;
}
.breadcrumb ol { display: flex; align-items: center; gap: 6px; list-style: none; flex-wrap: wrap; }
.breadcrumb li { display: flex; align-items: center; gap: 6px; font-size: 0.73rem; color: var(--ink-muted); }
.breadcrumb li + li::before { content: '/'; opacity: 0.35; }
.breadcrumb a { color: var(--ink-muted); text-decoration: none; transition: color 0.2s; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb [aria-current="page"] { color: var(--ink-soft); font-weight: 500; }