main {
      width: min(1180px, calc(100% - 32px));
      margin: 40px auto;
      padding: clamp(26px, 5vw, 54px);
      background:
        linear-gradient(180deg, rgba(255,255,255,.96), rgba(248,251,255,.90)),
        radial-gradient(circle at 8% 12%, rgba(20,184,166,.15), transparent 18rem),
        radial-gradient(circle at 92% 4%, rgba(11,94,215,.16), transparent 20rem);
      border: 1px solid rgba(215, 227, 243, 0.9);
      border-radius: 34px;
      box-shadow: var(--shadow);
      backdrop-filter: blur(14px);
      position: relative;
      overflow: hidden;
    }
    main::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 8px;
      background: linear-gradient(90deg, var(--primary), var(--accent));
    }

    .hero {
      display: grid;
      grid-template-columns: minmax(0, 1.05fr) minmax(320px, .95fr);
      gap: clamp(22px, 4vw, 46px);
      align-items: center;
      min-height: 520px;
      padding: clamp(30px, 5vw, 54px) 0 clamp(50px, 6vw, 70px);
      position: relative;
    }
    .hero > div:first-child {
      animation: fadeInUp .8s ease-out forwards;
    }
    .hero > div:last-child {
      animation: fadeInUp .8s ease-out .2s forwards;
      opacity: 0;
    }
    .hero::before {
      content: "";
      position: absolute;
      inset: 24px auto auto 42%;
      width: 210px;
      height: 210px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(20,184,166,.24), transparent 68%);
      filter: blur(2px);
      pointer-events: none;
    }
    .hero > div:first-child {
      text-align: right;
    }
    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 9px;
      margin: 0 0 clamp(12px, 2vw, 18px);
      padding: 7px 12px;
      border-radius: 999px;
      background: linear-gradient(90deg, rgba(11,94,215,.12), rgba(20,184,166,.14));
      color: var(--primary-dark);
      font-size: .78rem;
      font-weight: 800;
      line-height: 1;
      letter-spacing: 0;
      text-transform: none;
      animation: fadeIn .6s ease-out;
    }
    .eyebrow::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 999px;
      background: var(--accent);
      box-shadow: 0 0 0 7px rgba(20,184,166,.16);
      animation: pulse 1.9s ease-in-out infinite;
    }
    .hero h1 {
      margin: 0;
      color: #0f172a;
      font-size: clamp(2.1rem, 5vw, 4.65rem);
      line-height: 1.08;
      letter-spacing: -0.035em;
      max-width: 820px;
      animation: fadeInUp .7s ease-out .15s forwards;
      opacity: 0;
    }
    .hero h1 > span:first-child {
      display: block;
      direction: ltr;
      unicode-bidi: isolate;
      width: fit-content;
      margin: 0 0 10px auto;
      padding: 8px 14px;
      border: 1px solid rgba(11, 94, 215, .14);
      border-radius: 999px;
      background: rgba(255,255,255,.66);
      color: var(--muted);
      font-size: clamp(.92rem, 1.55vw, 1.25rem);
      font-weight: 900;
      line-height: 1.1;
      letter-spacing: -.035em;
      box-shadow: 0 10px 24px rgba(15,23,42,.06);
    }
    .gradient-text {
      display: block;
      background: linear-gradient(90deg, var(--primary), var(--accent));
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
      font-size: clamp(1.45rem, 3.25vw, 2.85rem);
      letter-spacing: -0.025em;
    }
    .intro {
      max-width: 690px;
      margin: clamp(16px, 3vw, 24px) 0 0;
      color: var(--muted);
      font-size: clamp(.98rem, 1.25vw, 1.08rem);
      line-height: 1.85;
      text-align: right;
      animation: fadeInUp .7s ease-out .25s forwards;
      opacity: 0;
    }
    .intro a {
      color: var(--primary-dark);
      font-weight: 900;
      text-decoration: none;
      border-bottom: 1px solid rgba(11,94,215,.28);
    }
    .translation-note {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 116px;
      gap: 12px 16px;
      align-items: start;
      max-width: 720px;
      margin: 16px 0 0;
      padding: 16px;
      border: 1px solid rgba(11,94,215,.14);
      border-radius: 22px;
      background:
        linear-gradient(180deg, rgba(255,255,255,.82), rgba(248,251,255,.76)),
        radial-gradient(circle at top left, rgba(20,184,166,.12), transparent 10rem);
      box-shadow: 0 14px 34px rgba(15,23,42,.07);
    }
    .translation-note p {
      margin: 0;
      color: var(--muted);
      font-size: .95rem;
      line-height: 1.85;
      text-align: right;
    }
    .translation-note strong {
      color: #0f172a;
      font-weight: 900;
    }
    .translation-note a {
      color: var(--primary-dark);
      font-weight: 900;
      text-decoration: none;
      border-bottom: 1px solid rgba(11,94,215,.28);
    }
    .author-photo {
      grid-column: 2;
      grid-row: 1 / span 2;
      margin: 0;
      width: 116px;
      border-radius: 20px;
      overflow: hidden;
      border: 1px solid rgba(11,94,215,.14);
      background: rgba(255,255,255,.78);
      box-shadow: 0 16px 34px rgba(15,23,42,.10);
    }
    .author-photo img {
      display: block;
      width: 100%;
      height: auto;
    }
    .author-photo figcaption {
      padding: 7px 8px;
      color: var(--muted);
      font-size: .72rem;
      font-weight: 800;
      text-align: center;
    }
    .audience-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      grid-column: 1;
      margin-top: 4px;
    }
    .audience-tags span {
      display: inline-flex;
      align-items: center;
      padding: 7px 11px;
      border-radius: 999px;
      background: rgba(204,251,241,.72);
      color: var(--accent-dark);
      font-size: .86rem;
      font-weight: 900;
    }
    .hero-points {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin: clamp(18px, 3vw, 26px) 0 0;
      padding: 0;
      list-style: none;
    }
    .hero-points > li {
      animation: fadeInUp .6s ease-out forwards;
      opacity: 0;
    }
    .hero-points > li:nth-child(1) { animation-delay: .3s; }
    .hero-points > li:nth-child(2) { animation-delay: .35s; }
    .hero-points > li:nth-child(3) { animation-delay: .4s; }
    .hero .hero-points > li {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 8px 12px;
      border: 1px solid rgba(11,94,215,.12);
      border-radius: 999px;
      background: rgba(255,255,255,.76);
      color: var(--primary-dark);
      font-size: .9rem;
      font-weight: 800;
      box-shadow: 0 10px 24px rgba(15,23,42,.05);
    }
    .hero .hero-points > li::before {
      content: "";
      width: 7px;
      height: 7px;
      border-radius: 999px;
      background: var(--accent);
      box-shadow: 0 0 0 5px rgba(20,184,166,.12);
    }
    .actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: clamp(22px, 4vw, 32px);
      animation: fadeInUp .7s ease-out .35s forwards;
      opacity: 0;
    }
    .button {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 46px;
      padding: 0 20px;
      border-radius: 999px;
      text-decoration: none;
      font-weight: 800;
      transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
    }
    .button.primary {
      color: #fff;
      background: linear-gradient(90deg, var(--primary), var(--accent));
      box-shadow: 0 16px 34px rgba(11, 94, 215, .22);
    }
    .button.secondary {
      color: var(--primary-dark);
      background: #fff;
      border: 1px solid var(--border);
    }
    .button:hover,
    .button:focus-visible {
      transform: translateY(-2px);
      box-shadow: 0 18px 38px rgba(15, 23, 42, .12);
      outline: none;
    }

    .cto-stage {
      min-height: 390px;
      border: 1px solid rgba(11, 94, 215, 0.12);
      border-radius: 34px;
      background:
        radial-gradient(circle at 50% 40%, rgba(255,255,255,.95), rgba(255,255,255,.18) 38%, transparent 39%),
        linear-gradient(135deg, rgba(11, 94, 215, 0.12), rgba(20, 184, 166, 0.13));
      box-shadow: 0 20px 54px rgba(15, 23, 42, .11);
      position: relative;
      overflow: hidden;
      animation: float 6s ease-in-out infinite;
    }
    .cto-stage::before {
      content: "";
      position: absolute;
      inset: 30px;
      border-radius: 50%;
      border: 1px solid rgba(11,94,215,.16);
      box-shadow: inset 0 0 0 52px rgba(255,255,255,.24);
      animation: spin 18s linear infinite;
    }
    .cto-stage::after {
      content: "";
      position: absolute;
      left: 10%;
      right: 10%;
      top: 50%;
      height: 2px;
      background: linear-gradient(90deg, transparent, rgba(11,94,215,.32), rgba(20,184,166,.48), transparent);
      animation: scan 3.4s ease-in-out infinite;
    }
    .toc-gift {
      position: relative;
      z-index: 4;
      min-height: 390px;
      padding: 24px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .gift-header {
      padding: 18px;
      border: 1px solid rgba(255,255,255,.72);
      border-radius: 24px;
      background: rgba(255,255,255,.78);
      box-shadow: 0 16px 34px rgba(15,23,42,.08);
    }
    .gift-header span {
      display: block;
      color: var(--muted);
      font-size: .82rem;
      font-weight: 900;
    }
    .gift-header strong {
      display: block;
      margin-top: 6px;
      color: #0f172a;
      font-size: clamp(1.2rem, 2.1vw, 1.8rem);
      line-height: 1.25;
    }
    .gift-track {
      position: relative;
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 12px;
      margin-top: 24px;
    }
    .gift-track::before {
      content: "";
      position: absolute;
      inset: 18px 50% 18px auto;
      width: 3px;
      border-radius: 999px;
      background: linear-gradient(180deg, var(--primary), var(--accent));
      opacity: .28;
    }
    .toc-step {
      position: relative;
      display: grid;
      min-height: 64px;
      align-content: center;
      padding: 12px 14px;
      border: 1px solid rgba(215,227,243,.95);
      border-radius: 18px;
      background: rgba(255,255,255,.88);
      color: var(--primary-dark);
      font-size: .9rem;
      font-weight: 900;
      box-shadow: 0 10px 26px rgba(15,23,42,.07);
      animation: stepGlow 6.4s ease-in-out infinite;
    }
    .toc-step:nth-child(2) { animation-delay: .4s; }
    .toc-step:nth-child(3) { animation-delay: .8s; }
    .toc-step:nth-child(4) { animation-delay: 1.2s; }
    .toc-step:nth-child(5) { animation-delay: 1.6s; }
    .toc-step:nth-child(6) { animation-delay: 2s; }
    .gift-pulse {
      position: absolute;
      right: calc(50% - 7px);
      top: 112px;
      width: 14px;
      height: 14px;
      border-radius: 999px;
      background: var(--accent);
      box-shadow: 0 0 0 9px rgba(20,184,166,.18), 0 0 28px rgba(20,184,166,.8);
      animation: giftTravel 5.6s ease-in-out infinite;
      z-index: 5;
    }
    .gift-footer {
      margin-top: 20px;
      padding: 12px 14px;
      border-radius: 18px;
      background: rgba(11,94,215,.09);
      color: var(--primary-dark);
      font-size: .88rem;
      font-weight: 900;
      text-align: center;
    }
    .cto-core {
      position: absolute;
      left: 50%;
      top: 48%;
      width: 150px;
      height: 150px;
      transform: translate(-50%, -50%);
      display: grid;
      place-items: center;
      border-radius: 36px;
      color: #fff;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      box-shadow: 0 24px 52px rgba(11,94,215,.26);
      font-size: 2.9rem;
      font-weight: 900;
      letter-spacing: -.08em;
      z-index: 2;
    }
    .cto-core span {
      display: block;
      transform: translateX(-3px);
    }
    .orbit {
      position: absolute;
      inset: 54px;
      border-radius: 50%;
      animation: spin 22s linear infinite;
    }
    .node {
      position: absolute;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-width: 96px;
      padding: 10px 13px;
      border-radius: 999px;
      background: rgba(255,255,255,.92);
      border: 1px solid rgba(215, 227, 243, .95);
      color: var(--primary-dark);
      font-size: .84rem;
      font-weight: 900;
      box-shadow: 0 12px 30px rgba(15,23,42,.09);
      animation: counterSpin 22s linear infinite;
    }
    .node.strategy { left: 50%; top: -4px; transform: translateX(-50%); }
    .node.teams { right: -12px; top: 46%; transform: translateY(-50%); }
    .node.systems { left: 50%; bottom: -4px; transform: translateX(-50%); }
    .node.security { left: -14px; top: 46%; transform: translateY(-50%); }

    .level-card {
      position: absolute;
      left: 26px;
      right: 26px;
      bottom: 24px;
      z-index: 3;
      padding: 18px;
      border-radius: 24px;
      background: rgba(255,255,255,.88);
      border: 1px solid rgba(215,227,243,.95);
      box-shadow: 0 16px 34px rgba(15,23,42,.08);
    }
    .level-title {
      margin: 0 0 12px;
      color: var(--muted);
      font-size: .78rem;
      font-weight: 900;
      letter-spacing: .08em;
      text-transform: uppercase;
    }
    .level-track {
      position: relative;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 10px;
    }
    .level-track::before {
      content: "";
      position: absolute;
      left: 0;
      right: 0;
      top: 14px;
      height: 6px;
      border-radius: 999px;
      background: #dbeafe;
    }
    .level-track::after {
      content: "";
      position: absolute;
      left: 0;
      top: 14px;
      height: 6px;
      border-radius: 999px;
      background: linear-gradient(90deg, var(--primary), var(--accent));
      animation: levelUp 4.8s ease-in-out infinite;
    }
    .level {
      position: relative;
      display: grid;
      gap: 8px;
      justify-items: center;
      color: var(--muted);
      font-size: .76rem;
      font-weight: 800;
      text-align: center;
      z-index: 1;
    }
    .level::before {
      content: "";
      width: 28px;
      height: 28px;
      border-radius: 999px;
      background: #fff;
      border: 6px solid #dbeafe;
      box-shadow: 0 4px 12px rgba(15,23,42,.08);
    }
    .level:last-child {
      color: var(--primary-dark);
    }
    .level:last-child::before {
      border-color: var(--accent);
    }

    .summary-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
      gap: 14px;
      margin: 0 0 54px;
    }
    .summary-card {
      padding: 24px;
      border-radius: 24px;
      background:
        linear-gradient(180deg, rgba(255,255,255,.96), rgba(248,251,255,.92)),
        radial-gradient(circle at top left, rgba(20,184,166,.14), transparent 9rem);
      border: 1px solid rgba(215, 227, 243, .95);
      box-shadow: 0 8px 22px rgba(15, 23, 42, 0.045);
    }
    .summary-card strong {
      display: block;
      color: #0f172a;
      font-size: 2.25rem;
      line-height: 1;
      letter-spacing: -.05em;
    }
    .summary-card span {
      display: block;
      margin-top: 7px;
      color: var(--muted);
      font-size: .95rem;
    }

    .section-heading {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      gap: 22px;
      margin: 0 0 clamp(32px, 5vw, 48px);
      animation: fadeInUp .7s ease-out .1s forwards;
      opacity: 0;
    }
    .section-heading p {
      max-width: 560px;
      margin: 0;
      color: var(--muted);
      text-align: right;
      animation: fadeInUp .7s ease-out .15s forwards;
      opacity: 0;
    }

    h2 {
      margin: 0 0 18px;
      color: #0f172a;
      font-size: clamp(1.45rem, 2vw, 2rem);
      line-height: 1.24;
      letter-spacing: -0.025em;
      display: flex;
      align-items: center;
      gap: 12px;
    }
    h2::before {
      content: "";
      width: 12px;
      height: 32px;
      border-radius: 999px;
      background: linear-gradient(180deg, var(--primary), var(--accent));
      flex: 0 0 auto;
    }
    .chapter-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(265px, 1fr));
      gap: 18px;
      margin: 0;
      padding: 0;
      list-style: none;
    }
    .chapter-grid > .chapter-card {
      height: 100%;
      padding: 0;
      list-style: none;
      animation: cardIn .7s ease both;
    }
    .chapter-grid > .chapter-card::before {
      content: none;
    }
    .chapter-card:nth-child(2) { animation-delay: .04s; }
    .chapter-card:nth-child(3) { animation-delay: .08s; }
    .chapter-card:nth-child(4) { animation-delay: .12s; }
    .chapter-card:nth-child(5) { animation-delay: .16s; }
    .chapter-card:nth-child(6) { animation-delay: .20s; }
    .chapter-card:nth-child(7) { animation-delay: .24s; }
    .chapter-card:nth-child(8) { animation-delay: .28s; }
    .chapter-card:nth-child(9) { animation-delay: .32s; }
    .chapter-card:nth-child(10) { animation-delay: .36s; }
    .chapter-card:nth-child(11) { animation-delay: .40s; }
    .chapter-card:nth-child(12) { animation-delay: .44s; }
    .chapter-card:nth-child(13) { animation-delay: .48s; }
    .chapter-card:nth-child(14) { animation-delay: .52s; }
    .chapter-card:nth-child(15) { animation-delay: .56s; }
    .chapter-card a {
      display: flex;
      flex-direction: column;
      min-height: 194px;
      height: 100%;
      padding: clamp(18px, 3vw, 28px);
      color: inherit;
      text-decoration: none;
      border: 1px solid rgba(215, 227, 243, .95);
      border-radius: 24px;
      background:
        linear-gradient(180deg, rgba(255,255,255,.96), rgba(248,251,255,.94)),
        radial-gradient(circle at top left, rgba(20,184,166,.16), transparent 10rem);
      box-shadow: 0 8px 22px rgba(15, 23, 42, 0.045);
      text-align: right;
      overflow: hidden;
      position: relative;
      transition: transform .28s cubic-bezier(.34, 1.56, .64, 1), box-shadow .28s ease, border-color .28s ease, background .28s ease;
    }
    .chapter-card a::before {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, rgba(11,94,215,.06), transparent 42%);
      opacity: 0;
      transition: opacity .18s ease;
      pointer-events: none;
    }
    .chapter-card a:hover,
    .chapter-card a:focus-visible {
      border-color: rgba(11, 94, 215, .34);
      box-shadow: 0 24px 48px rgba(15, 23, 42, 0.15);
      transform: translateY(-8px);
      outline: none;
    }
    .chapter-card a:hover::before,
    .chapter-card a:focus-visible::before {
      opacity: 1;
    }
    .chapter-cover {
      display: block;
      width: 100%;
      aspect-ratio: 5 / 3;
      height: auto;
      margin: 0 0 16px;
      border-radius: 18px;
      object-fit: cover;
      border: 1px solid rgba(11, 94, 215, .12);
      box-shadow: 0 14px 28px rgba(15, 23, 42, .10);
      background: rgba(248, 251, 255, .72);
      transition: transform .28s ease, box-shadow .28s ease;
    }
    .chapter-card a:hover .chapter-cover,
    .chapter-card a:focus-visible .chapter-cover {
      transform: scale(1.015);
      box-shadow: 0 18px 34px rgba(15, 23, 42, .14);
    }
    .chapter-number {
      display: inline-flex;
      width: fit-content;
      margin-bottom: 18px;
      padding: 6px 10px;
      border-radius: 999px;
      background: var(--accent-soft);
      color: var(--accent-dark);
      font-size: .78rem;
      font-weight: 900;
      line-height: 1;
      letter-spacing: 0;
      text-transform: none;
    }
    .chapter-grid .chapter-card h3 {
      margin: 0 0 10px;
      color: #0f172a;
      font-size: 1.17rem;
      line-height: 1.24;
      letter-spacing: -0.01em;
    }
    .chapter-grid .chapter-card p {
      margin: 0;
      color: var(--muted);
      font-size: .96rem;
      line-height: 1.8;
    }
    .chapter-grid .chapter-card h3 + p {
      padding: 0;
      border: 0;
      border-radius: 0;
      background: transparent;
    }
    .open-link {
      margin-top: auto;
      padding-top: 18px;
      color: var(--primary);
      font-weight: 900;
      font-size: .92rem;
    }
    .open-link::after {
      content: " ←";
    }
    .pdf-actions {
      display: flex;
      flex-direction: column;
      gap: 10px;
      margin-top: auto;
      padding-top: 18px;
    }
    .pdf-actions .button {
      min-height: 40px;
      padding: 0 16px;
      font-size: .9rem;
      flex: 1;
    }
    .landing-cta {
      margin: 54px 0 0;
      padding: clamp(24px, 4vw, 36px);
      border: 1px solid rgba(11,94,215,.16);
      border-radius: 30px;
      background:
        linear-gradient(135deg, rgba(11,94,215,.12), rgba(20,184,166,.14)),
        rgba(255,255,255,.72);
      text-align: center;
      box-shadow: 0 18px 42px rgba(15,23,42,.08);
    }
    .landing-cta h2 {
      justify-content: center;
      margin-bottom: 10px;
    }
    .landing-cta h2::before {
      display: none;
    }
    .landing-cta p {
      max-width: 640px;
      margin: 0 auto 22px;
      color: var(--muted);
      text-align: center;
    }
    .landing-cta .actions {
      justify-content: center;
      margin-top: 0;
    }
    .doc-footer {
      margin-top: 48px;
      padding-top: 22px;
      border-top: 1px solid var(--border);
      color: var(--muted);
      font-size: .94rem;
      text-align: center;
    }
    .doc-footer strong {
      display: block;
      color: #0f172a;
      margin-bottom: 14px;
    }
    .chapter-nav {
      display: flex;
      flex-wrap: wrap;
      gap: 4px;
      justify-content: center;
      align-items: center;
      width: 100%;
      margin-top: 14px;
      padding: 4px;
      border-radius: 10px;
      background: rgba(11, 94, 215, .04);
      border: 1px solid rgba(11, 94, 215, .10);
    }
    .chapter-nav a {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 5px;
      min-width: 0;
      padding: 5px 10px;
      border-radius: 7px;
      border: 1px solid transparent;
      background: transparent;
      color: var(--primary-dark);
      font-size: .76rem;
      font-weight: 600;
      line-height: 1.3;
      letter-spacing: .01em;
      text-decoration: none;
      white-space: nowrap;
      transition: background .15s ease, border-color .15s ease, color .15s ease;
    }
    .chapter-nav a[href$="/"]::before {
      content: "⌂";
      font-size: .9em;
      opacity: .65;
      line-height: 1;
    }
    .chapter-nav a:hover,
    .chapter-nav a:focus-visible {
      background: rgba(11, 94, 215, .08);
      border-color: rgba(11, 94, 215, .16);
      color: var(--primary);
    }

    /* Landing lists are layout components, not chapter body lists */
    .chapter-grid > .chapter-card,
    .hero .hero-points > li {
      margin: 0;
      border: none;
      background: none;
      box-shadow: none;
    }

    .chapter-grid > .chapter-card {
      position: relative;
    }

    .chapter-grid > .chapter-card::before {
      content: none;
      display: none;
    }

    .chapter-grid > .chapter-card.has-audio > a {
      min-height: 260px;
    }

    @keyframes float {
      0%, 100% { transform: translateY(0); }
      50% { transform: translateY(-10px); }
    }
    @keyframes spin {
      to { transform: rotate(360deg); }
    }
    @keyframes counterSpin {
      to { rotate: -360deg; }
    }
    @keyframes scan {
      0%, 100% { transform: translateY(-78px); opacity: .16; }
      50% { transform: translateY(78px); opacity: .82; }
    }
    @keyframes stepGlow {
      0%, 100% { transform: translateY(0); border-color: rgba(215,227,243,.95); }
      50% { transform: translateY(-4px); border-color: rgba(20,184,166,.42); }
    }
    @keyframes giftTravel {
      0%, 100% { transform: translateY(0); }
      50% { transform: translateY(210px); }
    }
    @keyframes levelUp {
      0%, 15% { width: 8%; }
      55%, 70% { width: 68%; }
      100% { width: 100%; }
    }
    @keyframes cardIn {
      from { opacity: 0; transform: translateY(16px); }
      to { opacity: 1; transform: translateY(0); }
    }
    @keyframes fadeIn {
      from { opacity: 0; }
      to { opacity: 1; }
    }
    @keyframes fadeInUp {
      from { opacity: 0; transform: translateY(16px); }
      to { opacity: 1; transform: translateY(0); }
    }

    @media (max-width: 920px) {
      .hero { grid-template-columns: 1fr; }
      .cto-stage { min-height: 390px; }
      .summary-grid { grid-template-columns: 1fr; }
      .section-heading {
        display: block;
      }
    }
    @media (max-width: 620px) {
      main { width: calc(100% - 24px); margin: 12px auto; border-radius: 26px; }
      .hero { min-height: auto; }
      .translation-note {
        grid-template-columns: 1fr;
      }
      .author-photo {
        grid-column: 1;
        grid-row: auto;
        width: min(180px, 60vw);
      }
      .audience-tags {
        grid-column: 1;
      }
      .hero-points { display: grid; }
      .actions { flex-direction: column; }
      .button { width: 100%; }
      .cto-stage { min-height: 360px; }
      .toc-gift { min-height: 360px; padding: 20px; }
      .gift-track { grid-template-columns: 1fr; }
      .gift-track::before,
      .gift-pulse { display: none; }
      .orbit { inset: 48px 34px 82px; }
      .node { min-width: auto; font-size: .72rem; }
      .level-card { left: 14px; right: 14px; }
      .level { font-size: .68rem; }
    }
    @media print {
      body { background: white; }
      body::before, body::after, main::before { display: none; }
      main {
        width: auto;
        margin: 0;
        box-shadow: none;
        border: none;
        border-radius: 0;
        padding: 24px;
      }
      .cto-stage { display: none; }
      .chapter-card, .chapter-card a { box-shadow: none; break-inside: avoid; }
    }