:root{
    --bg:#F5F7FC;
    --bg-soft:#EEF1FA;
    --grid-line:#E1E6F5;
    --ink:#10142B;
    --ink-soft:#565C7C;
    --ink-faint:#8489A6;
    --accent:#4B3AF0;
    --accent-ink:#3A2CC9;
    --accent-soft:#EDEBFE;
    --accent-2:#00B39C;
    --accent-2-soft:#E1F7F3;
    --warn:#E8572E;
    --warn-soft:#FDEBE4;
    --line:#D6DCEF;
    --card:#FFFFFF;
    --radius-lg:20px;
    --radius-md:14px;
    --radius-sm:8px;
    --shadow-sm:0 2px 10px rgba(16,20,43,.05);
    --shadow-md:0 12px 34px rgba(16,20,43,.08);
    --display:'Space Grotesk',sans-serif;
    --body:'Inter',sans-serif;
    --mono:'JetBrains Mono',monospace;
    --maxw:1180px;
  }
  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  @media (prefers-reduced-motion: reduce){
    html{scroll-behavior:auto;}
    *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
  }
  body{
    margin:0;
    background:
      radial-gradient(1200px 600px at 85% -10%, rgba(75,58,240,.07), transparent 60%),
      radial-gradient(900px 500px at -10% 20%, rgba(0,179,156,.06), transparent 55%),
      var(--bg);
    color:var(--ink);
    font-family:var(--body);
    line-height:1.6;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;}
  h1,h2,h3,h4{font-family:var(--display);margin:0;line-height:1.15;letter-spacing:-.01em;}
  p{margin:0;}
  .container{max-width:var(--maxw);margin:0 auto;padding:0 24px;}
  ::selection{background:var(--accent);color:#fff;}
  :focus-visible{outline:2.5px solid var(--accent);outline-offset:3px;border-radius:4px;}

  /* ---------- NAV ---------- */
  .nav{
    position:sticky;top:0;z-index:50;
    background:rgba(245,247,252,.82);
    backdrop-filter:blur(10px);
    -webkit-backdrop-filter:blur(10px);
    border-bottom:1px solid var(--grid-line);
  }
  .nav-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 24px;max-width:var(--maxw);margin:0 auto;}
  .brand{display:flex;align-items:center;gap:10px;font-family:var(--mono);font-weight:600;font-size:14px;letter-spacing:.04em;white-space:nowrap;}
  .brand-dot{width:10px;height:10px;border-radius:3px;background:var(--accent);position:relative;flex:none;}
  .brand-dot::after{content:'';position:absolute;inset:-4px;border:1px solid var(--accent);border-radius:6px;opacity:.35;}
  .nav-links{display:flex;gap:4px;overflow-x:auto;scrollbar-width:none;}
  .nav-links::-webkit-scrollbar{display:none;}
  .nav-links a{
    font-family:var(--mono);font-size:12.5px;color:var(--ink-soft);text-decoration:none;
    padding:8px 12px;border-radius:20px;white-space:nowrap;transition:background .15s,color .15s;
  }
  .nav-links a:hover{background:var(--accent-soft);color:var(--accent-ink);}

  /* ---------- HERO ---------- */
  .hero{position:relative;overflow:hidden;padding:88px 24px 70px;}
  .hero-canvas-wrap{position:absolute;inset:0;z-index:0;}
  #network{width:100%;height:100%;display:block;}
  .hero-grid-overlay{
    position:absolute;inset:0;z-index:0;pointer-events:none;
    background-image:
      linear-gradient(var(--grid-line) 1px, transparent 1px),
      linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
    background-size:42px 42px;
    -webkit-mask-image:radial-gradient(60% 55% at 50% 30%, #000 20%, transparent 85%);
    mask-image:radial-gradient(60% 55% at 50% 30%, #000 20%, transparent 85%);
    opacity:.7;
  }
  .hero-inner{position:relative;z-index:1;max-width:var(--maxw);margin:0 auto;text-align:center;}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-family:var(--mono);font-size:12px;letter-spacing:.08em;color:var(--accent-ink);
    background:var(--accent-soft);border:1px solid #DAD5FC;
    padding:7px 14px;border-radius:100px;margin-bottom:26px;
  }
  .eyebrow .pulse{width:7px;height:7px;border-radius:50%;background:var(--accent-2);box-shadow:0 0 0 0 rgba(0,179,156,.6);animation:pulse 2s infinite;}
  @keyframes pulse{
    0%{box-shadow:0 0 0 0 rgba(0,179,156,.55);}
    70%{box-shadow:0 0 0 8px rgba(0,179,156,0);}
    100%{box-shadow:0 0 0 0 rgba(0,179,156,0);}
  }
  .hero h1{font-size:clamp(2.6rem,7vw,5.2rem);font-weight:700;}
  .hero h1 span{color:var(--accent);}
  .hero-sub{
    max-width:640px;margin:22px auto 0;font-size:clamp(1rem,2vw,1.2rem);color:var(--ink-soft);
  }
  .hero-stats{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-top:38px;}
  .hero-stat{
    font-family:var(--mono);font-size:12.5px;color:var(--ink-soft);
    background:var(--card);border:1px solid var(--line);padding:9px 16px;border-radius:100px;
    display:flex;align-items:center;gap:8px;box-shadow:var(--shadow-sm);
  }
  .hero-stat b{color:var(--ink);font-weight:600;}
  .hero-scroll{margin-top:52px;display:flex;justify-content:center;}
  .hero-scroll a{
    display:flex;flex-direction:column;align-items:center;gap:6px;font-family:var(--mono);
    font-size:11px;color:var(--ink-faint);text-decoration:none;
  }
  .scroll-line{width:1px;height:34px;background:linear-gradient(var(--ink-faint),transparent);animation:scrolldrop 1.8s ease-in-out infinite;}
  @keyframes scrolldrop{0%{opacity:0;transform:translateY(-6px);}40%{opacity:1;}100%{opacity:0;transform:translateY(14px);}}

  /* ---------- CIRCUIT DIVIDER ---------- */
  .circuit-divider{width:100%;height:34px;margin:0 auto;max-width:var(--maxw);padding:0 24px;}
  .circuit-divider svg{width:100%;height:100%;display:block;}
  .circuit-divider.flip svg{transform:scaleX(-1);}

  /* ---------- SECTIONS ---------- */
  .section{padding:64px 24px;}
  .section-tight{padding:36px 24px;}
  .section-head{max-width:720px;margin:0 0 34px;}
  .section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
  .kicker{
    font-family:var(--mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--accent-2);
    display:flex;align-items:center;gap:8px;margin-bottom:12px;justify-content:flex-start;
  }
  .section-head.center .kicker{justify-content:center;}
  .kicker::before{content:'';width:16px;height:1px;background:var(--accent-2);}
  .section-head.center .kicker::before{display:none;}
  .section h2{font-size:clamp(1.6rem,3.4vw,2.3rem);}
  .section-head p{margin-top:14px;color:var(--ink-soft);font-size:1.02rem;}

  /* ---------- CALLOUT / INFO CARDS ---------- */
  .card{
    background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
    padding:30px 32px;box-shadow:var(--shadow-sm);
  }
  .info-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:20px;max-width:var(--maxw);margin:0 auto;align-items:start;}
  @media (max-width:860px){.info-grid{grid-template-columns:1fr;}}
  .info-card h3{font-size:1.2rem;margin-bottom:12px;}
  .info-card p + p{margin-top:12px;}
  .info-card{color:var(--ink-soft);}
  .warn-card{
    background:var(--warn-soft);border:1px solid #F6CFC0;border-radius:var(--radius-lg);
    padding:26px 28px;
  }
  .warn-card h3{color:#B23F1F;font-size:1.05rem;display:flex;align-items:center;gap:10px;margin-bottom:10px;}
  .warn-card h3 svg{flex:none;}
  .warn-card p{color:#8A3C24;font-size:.96rem;}

  /* ---------- PRESENTATION / TIMELINE ---------- */
  .pitch-block{max-width:800px;margin:0 auto;}
  .pitch-block p{color:var(--ink-soft);font-size:1.06rem;}
  .pitch-block p + p{margin-top:16px;}
  .pitch-block strong{color:var(--ink);}
  .era-strip{
    margin:34px auto 0;max-width:800px;display:flex;align-items:center;justify-content:space-between;
    font-family:var(--mono);font-size:12.5px;color:var(--ink-faint);
  }
  .era-strip .era-line{flex:1;height:1px;background:repeating-linear-gradient(90deg,var(--line) 0 6px,transparent 6px 11px);margin:0 14px;}

  /* ---------- READING ORDER ---------- */
  .order-steps{
    max-width:var(--maxw);margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);gap:16px;
  }
  @media (max-width:920px){.order-steps{grid-template-columns:1fr 1fr;}}
  @media (max-width:560px){.order-steps{grid-template-columns:1fr;}}
  .step-card{
    background:var(--card);border:1px solid var(--line);border-radius:var(--radius-md);
    padding:22px 20px;position:relative;box-shadow:var(--shadow-sm);
  }
  .step-num{
    font-family:var(--mono);font-size:12px;color:var(--accent);background:var(--accent-soft);
    display:inline-block;padding:3px 9px;border-radius:6px;margin-bottom:12px;
  }
  .step-card h4{font-size:1rem;margin-bottom:8px;}
  .step-card p{font-size:.9rem;color:var(--ink-soft);}
  .step-card .step-titles{font-size:.78rem;color:var(--ink-faint);margin-top:10px;font-family:var(--mono);}
  .order-note{max-width:800px;margin:30px auto 0;color:var(--ink-soft);background:var(--accent-2-soft);border:1px solid #B7EBE2;padding:18px 22px;border-radius:var(--radius-md);font-size:.95rem;}

  /* ---------- CYCLES ---------- */
  .cycle{max-width:var(--maxw);margin:0 auto 64px;}
  .cycle:last-child{margin-bottom:0;}
  .cycle-head{display:flex;flex-wrap:wrap;gap:20px;justify-content:space-between;align-items:flex-end;margin-bottom:22px;}
  .cycle-title-wrap .cycle-eyebrow{font-family:var(--mono);font-size:12px;color:var(--ink-faint);letter-spacing:.06em;display:inline-flex;align-items:center;gap:8px;}
  .cycle-dot{width:8px;height:8px;border-radius:50%;display:inline-block;flex:none;}
  .cycle-title-wrap h3{font-size:clamp(1.5rem,3vw,2rem);margin-top:6px;}
  .cycle-pitch{max-width:560px;color:var(--ink-soft);font-size:.98rem;}

  /* gate */
  .gate{
    background:linear-gradient(180deg,#151834,#0F1226);
    border-radius:var(--radius-lg);
    padding:28px 30px;
    color:#DDE1FA;
    box-shadow:var(--shadow-md);
    position:relative;overflow:hidden;
  }
  .gate::before{
    content:'';position:absolute;inset:0;
    background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
    background-size:24px 24px;pointer-events:none;
  }
  .gate.shake{animation:shake .4s;}
  @keyframes shake{
    10%,90%{transform:translateX(-1px);} 20%,80%{transform:translateX(2px);}
    30%,50%,70%{transform:translateX(-4px);} 40%,60%{transform:translateX(4px);}
  }
  .gate-row{position:relative;display:flex;flex-wrap:wrap;align-items:center;gap:18px;justify-content:space-between;}
  .gate-label{font-family:var(--mono);font-size:12.5px;color:var(--accent-2);letter-spacing:.05em;display:flex;align-items:center;gap:10px;}
  .gate-label .cursor{display:inline-block;width:7px;height:14px;background:var(--accent-2);animation:blink 1s steps(1) infinite;}
  @keyframes blink{50%{opacity:0;}}
  .gate-label .cycle-name{color:#fff;}
  .gate-form{display:flex;gap:10px;flex-wrap:wrap;}
  .gate-field{position:relative;}
  .gate-form input[type="password"],.gate-form input[type="text"]{
    font-family:var(--mono);font-size:13.5px;background:rgba(255,255,255,.06);
    border:1px solid rgba(255,255,255,.18);color:#fff;border-radius:8px;
    padding:11px 40px 11px 14px;min-width:190px;
  }
  .gate-form input::placeholder{color:rgba(221,225,250,.4);}
  .gate-toggle{
    position:absolute;right:8px;top:50%;transform:translateY(-50%);
    background:none;border:none;color:rgba(221,225,250,.55);cursor:pointer;padding:4px;
  }
  .gate-submit{
    font-family:var(--mono);font-size:13px;font-weight:600;letter-spacing:.03em;
    background:var(--accent-2);color:#062420;border:none;border-radius:8px;padding:11px 18px;cursor:pointer;
    transition:filter .15s, transform .15s;
  }
  .gate-submit:hover{filter:brightness(1.08);}
  .gate-submit:active{transform:scale(.97);}
  .gate-error{
    position:relative;font-family:var(--mono);font-size:12px;color:#FF9D80;margin-top:12px;
  }
  .gate-hint{position:relative;font-family:var(--mono);font-size:11px;color:rgba(221,225,250,.4);margin-top:14px;}

  .gate.unlocked{
    background:linear-gradient(135deg,var(--accent-2-soft),#F5FCFB);
    color:var(--ink);border:1px solid #BEEDE4;
  }
  .gate.unlocked::before{display:none;}
  .gate.unlocked .gate-label{color:#0B8F7B;}
  .gate.unlocked .gate-label .cycle-name{color:var(--ink);}
  .gate.unlocked .unlocked-msg{font-family:var(--mono);font-size:12.5px;color:#0B8F7B;display:flex;align-items:center;gap:8px;}

  .books-grid{
    display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:22px;
    opacity:0;transform:translateY(10px);transition:opacity .5s ease, transform .5s ease;
  }
  .books-grid.reveal{opacity:1;transform:translateY(0);}
  @media (max-width:980px){.books-grid{grid-template-columns:repeat(2,1fr);}}
  @media (max-width:640px){.books-grid{grid-template-columns:1fr;}}

  .book-card{
    background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
    overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--shadow-sm);
    transition:box-shadow .2s, transform .2s;
  }
  .book-card:hover{box-shadow:var(--shadow-md);transform:translateY(-3px);}
  .book-cover{position:relative;aspect-ratio:2/3;background:var(--bg-soft);overflow:hidden;}
  .book-cover img{width:100%;height:100%;object-fit:cover;}
  .vol-badge{
    position:absolute;top:10px;left:10px;font-family:var(--mono);font-size:10.5px;
    background:rgba(16,20,43,.72);color:#fff;padding:4px 8px;border-radius:6px;letter-spacing:.03em;
  }
  .book-cover-fallback-label{display:none;}
  .book-cover.cover-fallback{
    display:flex;align-items:center;justify-content:center;text-align:center;padding:22px;
    background:
      repeating-linear-gradient(135deg, var(--accent-soft) 0 10px, #fff 10px 20px);
  }
  .book-cover.cover-fallback .book-cover-fallback-label{
    display:block;font-family:var(--display);font-weight:600;font-size:1.05rem;color:var(--accent-ink);
  }
  .book-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
  .book-kicker{font-family:var(--mono);font-size:11px;color:var(--ink-faint);letter-spacing:.04em;text-transform:uppercase;}
  .book-title{font-size:1.18rem;}
  .book-tagline{font-size:.88rem;color:var(--accent-ink);font-style:italic;}
  .book-meta{font-family:var(--mono);font-size:11px;color:var(--ink-faint);display:flex;flex-wrap:wrap;gap:6px 8px;}
  details.book-blurb{margin-top:2px;}
  details.book-blurb summary{
    list-style:none;cursor:pointer;font-family:var(--mono);font-size:12px;color:var(--accent-ink);
    display:flex;align-items:center;gap:6px;padding:2px 0;
  }
  details.book-blurb summary::-webkit-details-marker{display:none;}
  details.book-blurb summary::after{content:'▾';font-size:10px;transition:transform .2s;}
  details.book-blurb[open] summary::after{transform:rotate(180deg);}
  .blurb-text{margin-top:10px;padding-top:12px;border-top:1px dashed var(--line);display:flex;flex-direction:column;gap:9px;}
  .blurb-text p{font-size:.88rem;color:var(--ink-soft);}
  .book-actions{margin-top:auto;padding-top:12px;display:flex;flex-wrap:wrap;gap:8px;}
  .btn{
    font-family:var(--mono);font-size:12px;font-weight:500;text-decoration:none;text-align:center;
    padding:10px 14px;border-radius:8px;flex:1;min-width:120px;transition:filter .15s, transform .15s;
    border:1px solid transparent;
  }
  .btn:active{transform:scale(.97);}
  .btn-primary{background:var(--accent);color:#fff;}
  .btn-primary:hover{filter:brightness(1.08);}
  .btn-ghost{background:transparent;border-color:var(--line);color:var(--ink-soft);}
  .btn-ghost:hover{border-color:var(--accent);color:var(--accent-ink);}

  /* ---------- STATS ---------- */
  .stats-wrap{max-width:var(--maxw);margin:0 auto;}
  .stat-trio{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-bottom:36px;}
  @media (max-width:760px){.stat-trio{grid-template-columns:1fr;}}
  .stat-big{
    background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
    padding:26px 26px;text-align:center;box-shadow:var(--shadow-sm);
  }
  .stat-big .num{font-family:var(--display);font-size:clamp(2rem,4vw,2.6rem);font-weight:700;color:var(--accent);}
  .stat-big .label{font-family:var(--mono);font-size:12px;color:var(--ink-soft);margin-top:6px;}
  .stats-footnote{max-width:var(--maxw);margin:20px auto 0;font-size:.82rem;color:var(--ink-faint);text-align:center;}

  /* stats tables (one per cycle, mirrors the author's reference table) */
  .stats-table-card{
    background:var(--card);border:1px solid var(--line);border-radius:var(--radius-md);
    overflow:hidden;box-shadow:var(--shadow-sm);margin-bottom:18px;
  }
  .stats-table-scroll{overflow-x:auto;}
  .stats-table-card table{width:100%;border-collapse:collapse;font-size:.86rem;min-width:560px;}
  .stats-table-card thead th{
    font-family:var(--display);font-weight:600;color:#fff;text-align:left;
    padding:12px 16px;white-space:nowrap;
  }
  .stats-table-card th.num-col, .stats-table-card td.num-col{text-align:right;}
  .stats-table-card tbody td{padding:10px 16px;border-bottom:1px solid var(--line);color:var(--ink-soft);white-space:nowrap;}
  .stats-table-card tbody tr:last-child td{border-bottom:none;}
  .stats-table-card tbody td:first-child{color:var(--ink);font-weight:500;white-space:normal;}
  .stats-table-card tr.subtotal-row td{font-weight:700;color:var(--ink);font-family:var(--mono);font-size:.82rem;}
  .stats-table-card tr.subtotal-row td:first-child{font-family:var(--body);}
  .stats-grand-total{
    display:flex;flex-wrap:wrap;justify-content:center;gap:10px 22px;
    background:var(--ink);color:#fff;border-radius:var(--radius-md);
    padding:20px 26px;margin-top:8px;font-family:var(--mono);font-size:12.5px;
  }
  .stats-grand-total span:first-child{font-family:var(--display);font-weight:600;font-size:14px;color:var(--accent-2);}

  /* ---------- QUESTIONS ---------- */
  .questions-grid{max-width:var(--maxw);margin:0 auto;display:grid;grid-template-columns:repeat(2,1fr);gap:16px;}
  @media (max-width:760px){.questions-grid{grid-template-columns:1fr;}}
  .q-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-md);padding:20px 22px;box-shadow:var(--shadow-sm);}
  .q-card .q-num{font-family:var(--mono);font-size:11px;color:var(--accent-2);}
  .q-card p{margin-top:8px;font-size:.95rem;color:var(--ink);}

  /* ---------- THANKS ---------- */
  .thanks-card{
    max-width:800px;margin:0 auto;text-align:center;padding:44px 34px;
    background:linear-gradient(135deg,var(--accent-soft),#fff 65%);
    border:1px solid #DAD5FC;border-radius:var(--radius-lg);
  }
  .thanks-card h3{font-size:1.5rem;margin-bottom:14px;}
  .thanks-card p{color:var(--ink-soft);font-size:1rem;}
  .thanks-card p + p{margin-top:12px;}
  .thanks-sign{margin-top:20px;font-family:var(--display);font-weight:600;color:var(--accent-ink);}

  /* ---------- LANGUAGE TOGGLE ---------- */
  [hidden]{display:none !important;}
  .lang-toggle{
    font-family:var(--mono);font-weight:600;font-size:12.5px;letter-spacing:.03em;
    color:var(--accent-ink);background:transparent;border:1.4px solid var(--accent);
    border-radius:100px;padding:7px 14px;cursor:pointer;
    transition:background .15s ease,color .15s ease;
  }
  .lang-toggle:hover,.lang-toggle:focus-visible{background:var(--accent);color:#fff;}

  /* ---------- ENGLISH EDITION: HIGHLIGHT CARD + BADGES ---------- */
  .highlight-download{
    max-width:640px;margin:0 auto 44px;padding:30px 32px;text-align:center;
    background:linear-gradient(135deg,var(--accent-soft),var(--accent-2-soft));
    border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);
  }
  .highlight-kicker{
    font-family:var(--mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;
    color:var(--accent-2);margin:0 0 8px;
  }
  .highlight-download h3{font-size:1.4rem;margin-bottom:2px;}
  .highlight-sub{color:var(--ink-soft);margin:0 0 22px;font-style:italic;font-size:.95rem;}
  .highlight-buttons{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}
  .highlight-buttons .btn{flex:none;min-width:230px;padding:12px 22px;font-size:13px;}
  .btn-en{background:var(--accent-2);color:#fff;}
  .btn-en:hover{filter:brightness(1.08);}
  .en-pending{
    display:inline-block;font-family:var(--mono);font-size:11px;letter-spacing:.02em;
    color:var(--ink-faint);border:1px dashed var(--line);border-radius:6px;padding:2px 8px;margin-left:6px;
  }

  /* ---------- FOOTER ---------- */
  footer{border-top:1px solid var(--grid-line);padding:52px 24px 34px;background:var(--bg-soft);}
  .footer-inner{max-width:var(--maxw);margin:0 auto;display:flex;flex-wrap:wrap;justify-content:space-between;gap:26px;}
  .footer-brand{font-family:var(--mono);font-weight:600;font-size:14px;}
  .footer-contact p{font-size:.9rem;color:var(--ink-soft);margin-top:6px;}
  .footer-contact a{color:var(--accent-ink);text-decoration:none;font-weight:500;}
  .footer-contact a:hover{text-decoration:underline;}
  .footer-legal{font-size:.78rem;color:var(--ink-faint);max-width:420px;}
  .footer-bottom{max-width:var(--maxw);margin:32px auto 0;padding-top:20px;border-top:1px solid var(--grid-line);font-family:var(--mono);font-size:11px;color:var(--ink-faint);display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;}