:root{
    --bg:#faf7f2; --bg-alt:#f1ece2; --paper:#ffffff; --ink:#211d1a; --ink-soft:#5d5650;
    --red:#c8102e; --red-deep:#9c0c24; --gold:#b3903f; --line:#e2dacb;
    --radius:18px; --shadow:0 20px 50px -25px rgba(33,29,26,.35);
  }
  *{box-sizing:border-box;margin:0;padding:0;}
  html{scroll-behavior:smooth;}
  body{background:var(--bg);color:var(--ink);font-family:'Inter',sans-serif;-webkit-font-smoothing:antialiased;font-size:16px;line-height:1.6;}
  h1,h2,h3{font-family:'Fraunces',serif;letter-spacing:-0.01em;}
  a{color:inherit;text-decoration:none;}
  .mono{font-family:'IBM Plex Mono',monospace;}
  .wrap{max-width:1160px;margin:0 auto;padding:0 28px;}
  .seam{height:14px;background-image:radial-gradient(circle,var(--bg) 3px,transparent 3.5px);background-size:20px 20px;background-position:center;background-color:var(--red);}

  header.site{background:var(--paper);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50;}
  .headerbar{display:flex;align-items:center;justify-content:space-between;padding:14px 28px;max-width:1160px;margin:0 auto;gap:20px;}
  .logo{display:flex;align-items:center;gap:9px;}
  .logo-text{display:flex;flex-direction:column;line-height:1.1;}
  .logo-name{font-family:'Fraunces',serif;font-weight:700;font-size:19px;}
  .logo-tagline{font-weight:600;font-size:10.5px;color:var(--ink-soft);}
  nav.primary{display:flex;align-items:center;gap:26px;font-size:14.5px;font-weight:600;color:var(--ink-soft);}
  nav.primary a:hover{color:var(--red);}
  .badge-new{background:var(--gold);color:#fff;font-size:10px;font-weight:700;padding:2px 6px;border-radius:6px;margin-left:6px;vertical-align:2px;}
  .header-actions{display:flex;align-items:center;gap:10px;}
  .lang-switch{display:flex;gap:2px;border:1px solid var(--line);border-radius:999px;padding:3px;font-size:12.5px;font-weight:700;}
  .lang-switch a{padding:4px 10px;border-radius:999px;color:var(--ink-soft);}
  .lang-switch a.on{background:var(--red);color:#fff;}
  .btn{display:inline-flex;align-items:center;justify-content:center;padding:11px 20px;border-radius:999px;font-weight:700;font-size:14.5px;border:1.5px solid transparent;cursor:pointer;transition:transform .15s ease;}
  .btn:hover{transform:translateY(-1px);}
  .btn-ghost{border-color:var(--ink);color:var(--ink);}
  .btn-primary{background:var(--red);color:#fff;box-shadow:0 10px 24px -12px rgba(200,16,46,.6);}
  .btn-primary:hover{background:var(--red-deep);}
  .btn-lg{padding:14px 26px;font-size:15.5px;}
  @media (max-width:960px){nav.primary{display:none;}}
  @media (max-width:640px){.lang-switch{display:none;}}

  .hero{padding:76px 0 60px;background:radial-gradient(circle at 85% 10%, rgba(200,16,46,.07), transparent 45%),var(--bg);position:relative;overflow:hidden;}
  .hero-grid{display:grid;grid-template-columns:1.05fr .8fr;gap:56px;align-items:center;}
  .eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:'IBM Plex Mono',monospace;font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--red-deep);background:#fdeee0;border:1px solid #f3d9c4;padding:6px 12px;border-radius:999px;margin-bottom:22px;}
  .hero h1{font-size:clamp(38px,5vw,58px);line-height:1.06;font-weight:600;}
  .hero h1 em{font-style:italic;color:var(--red);}
  .hero p.lede{margin-top:20px;font-size:18px;line-height:1.6;color:var(--ink-soft);max-width:48ch;}
  .hero-cta{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap;}
  .hero-note{margin-top:14px;font-size:13px;color:var(--ink-soft);}
  .stat-row{display:flex;margin-top:44px;border:1px solid var(--line);border-radius:16px;overflow:hidden;background:var(--paper);}
  .stat{flex:1;padding:18px 20px;border-right:1px solid var(--line);}
  .stat:last-child{border-right:none;}
  .stat .num{font-family:'Fraunces',serif;font-size:28px;font-weight:600;color:var(--red-deep);}
  .stat .lbl{font-size:12px;color:var(--ink-soft);margin-top:2px;font-weight:600;text-transform:uppercase;letter-spacing:.03em;}

  .seal-wrap{position:relative;display:flex;align-items:center;justify-content:center;}
  .seal{width:320px;height:320px;border-radius:50%;background:var(--paper);border:2px solid var(--red);box-shadow:var(--shadow);display:flex;align-items:center;justify-content:center;position:relative;animation:spin 60s linear infinite;}
  .seal::before{content:"";position:absolute;inset:14px;border:1.5px dashed var(--gold);border-radius:50%;}
  .seal-inner{width:70%;height:70%;border-radius:50%;background:linear-gradient(160deg,var(--red) 0%,var(--red-deep) 100%);display:flex;align-items:center;justify-content:center;flex-direction:column;color:#fff;text-align:center;animation:spin-rev 60s linear infinite;}
  .seal-inner .kap{font-family:'Fraunces',serif;font-size:15px;font-weight:700;letter-spacing:.05em;}
  .seal-inner .sub{font-family:'IBM Plex Mono',monospace;font-size:10px;letter-spacing:.12em;opacity:.85;margin-top:4px;}
  @keyframes spin{to{transform:rotate(360deg);}}
  @keyframes spin-rev{to{transform:rotate(-360deg);}}
  @media (prefers-reduced-motion:reduce){.seal,.seal-inner{animation:none;}}
  .float-card{position:absolute;background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:10px 14px;box-shadow:var(--shadow);font-size:13px;font-weight:600;display:flex;align-items:center;gap:8px;}
  .float-card.f1{top:6%;left:-8%;}
  .float-card.f2{bottom:8%;right:-10%;}
  .dot{width:8px;height:8px;border-radius:50%;}
  .dot.green{background:#2f9e5e;}
  .dot.gold{background:#d6a30c;}
  @media (max-width:900px){.hero-grid{grid-template-columns:1fr;}.seal-wrap{margin-top:20px;}.seal{width:240px;height:240px;}.float-card{display:none;}.stat-row{flex-wrap:wrap;}.stat{flex:1 1 50%;border-bottom:1px solid var(--line);}}

  .ai-banner{background:linear-gradient(120deg,#1c1815 0%,#2a221c 60%,var(--red-deep) 140%);color:#fff;border-radius:26px;padding:52px 48px;display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:center;margin:8px 0 20px;position:relative;overflow:hidden;}
  .ai-banner::after{content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border:1px dashed rgba(255,255,255,.25);border-radius:50%;}
  .ai-banner .tag{font-family:'IBM Plex Mono',monospace;font-size:11.5px;letter-spacing:.12em;color:#f0c88a;text-transform:uppercase;margin-bottom:14px;}
  .ai-banner h2{font-size:clamp(26px,3vw,36px);font-weight:600;line-height:1.15;color:#fff;}
  .ai-banner h2 .accent{color:#f0c88a;font-style:italic;}
  .ai-banner p{margin-top:14px;color:rgba(255,255,255,.78);font-size:15.5px;line-height:1.6;max-width:46ch;}
  .ai-banner .btn-primary{margin-top:24px;background:#f0c88a;color:#20160a;box-shadow:none;}
  .ai-banner .btn-primary:hover{background:#e8b96a;}
  .ai-points{display:flex;flex-direction:column;gap:12px;}
  .ai-point{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.15);border-radius:14px;padding:14px 16px;font-size:13.5px;backdrop-filter:blur(4px);}
  .ai-point b{display:block;font-size:14px;margin-bottom:2px;}
  .ai-point span{color:rgba(255,255,255,.7);}
  @media (max-width:900px){.ai-banner{grid-template-columns:1fr;padding:36px 26px;}}

  .section{padding:70px 0;}
  .section.alt{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
  .section-head{max-width:660px;margin-bottom:44px;}
  .section-head h2{font-size:clamp(28px,3.4vw,38px);font-weight:600;}
  .section-head p{margin-top:14px;color:var(--ink-soft);font-size:16px;}

  .benefits{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:12px 28px;list-style:none;}
  .benefits li{position:relative;padding-left:28px;font-size:15px;color:var(--ink-soft);}
  .benefits li::before{content:'✓';position:absolute;left:0;top:0;color:var(--red);font-weight:800;}
  .benefits li b{color:var(--ink);}

  .steps{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;}
  .step .stepnum{font-family:'Fraunces',serif;font-size:52px;font-weight:600;color:transparent;-webkit-text-stroke:1.5px var(--red);line-height:1;margin-bottom:14px;display:block;}
  .step h3{font-size:19px;font-weight:600;margin-bottom:10px;}
  .step p{color:var(--ink-soft);font-size:14.5px;}
  @media (max-width:900px){.steps{grid-template-columns:1fr;gap:36px;}}

  .topics-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
  .topic-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;display:flex;flex-direction:column;gap:12px;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;}
  .topic-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--red);}
  .topic-top{display:flex;justify-content:space-between;align-items:flex-start;}
  .topic-qty{font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--ink-soft);}
  .diff{font-size:11px;font-weight:700;padding:3px 9px;border-radius:999px;text-transform:uppercase;}
  .diff.easy{background:#e4f4ea;color:#1f7a45;}
  .diff.medium{background:#fdf2da;color:#96700e;}
  .diff.hard{background:#fbe4e4;color:var(--red-deep);}
  .topic-card h3{font-size:19px;font-weight:600;}
  .topic-card .desc{font-size:13.5px;color:var(--ink-soft);}
  .topic-card .go{margin-top:auto;font-size:13.5px;font-weight:700;color:var(--red-deep);}
  @media (max-width:1000px){.topics-grid{grid-template-columns:repeat(2,1fr);}}
  @media (max-width:600px){.topics-grid{grid-template-columns:1fr;}}
  .center-link{display:flex;justify-content:center;margin-top:36px;}
  .link-underline{font-weight:700;font-size:15px;border-bottom:2px solid var(--red);padding-bottom:2px;}

  .features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
  .feature{padding:26px 4px;border-top:2px solid var(--ink);}
  .feature .ico{width:38px;height:38px;border-radius:10px;background:var(--red);display:flex;align-items:center;justify-content:center;color:#fff;margin-bottom:16px;font-size:17px;}
  .feature h3{font-size:16.5px;font-weight:600;margin-bottom:8px;}
  .feature p{font-size:13.5px;color:var(--ink-soft);}
  @media (max-width:900px){.features-grid{grid-template-columns:repeat(2,1fr);}}
  @media (max-width:560px){.features-grid{grid-template-columns:1fr;}}

  .plans{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px;max-width:760px;margin:0 auto;}
  .plan{background:var(--paper);border:1px solid var(--line);border-radius:20px;padding:30px;}
  .plan.premium{background:#241a12;border-color:#3a2c1e;color:#f3ece3;}
  .plan .p-name{font-size:12px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-soft);}
  .plan.premium .p-name{color:#f0c88a;}
  .plan .p-price{font-family:'Fraunces',serif;font-size:34px;font-weight:600;margin:8px 0 16px;}
  .plan .p-price span{font-size:15px;font-family:'Inter',sans-serif;font-weight:500;color:var(--ink-soft);}
  .plan.premium .p-price span{color:rgba(243,236,227,.6);}
  .plan ul{list-style:none;margin-bottom:22px;}
  .plan li{padding-left:24px;position:relative;font-size:14px;margin-bottom:9px;color:var(--ink-soft);}
  .plan.premium li{color:rgba(243,236,227,.85);}
  .plan li::before{content:'✓';position:absolute;left:0;color:var(--red);font-weight:800;}
  .plan.premium li::before{color:#f0c88a;}
  .btn-gold{background:#f0c88a;color:#20160a;}
  .btn-gold:hover{background:#e8b96a;}

  .blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
  .blog-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;display:flex;flex-direction:column;gap:10px;transition:transform .18s ease,box-shadow .18s ease;}
  .blog-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);}
  .blog-card .cat{font-family:'IBM Plex Mono',monospace;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--red-deep);}
  .blog-card h3{font-size:18px;font-weight:600;line-height:1.3;}
  .blog-card p{font-size:13.5px;color:var(--ink-soft);}
  .blog-card .go{margin-top:auto;font-size:13.5px;font-weight:700;color:var(--red-deep);}
  @media (max-width:900px){.blog-grid{grid-template-columns:1fr;}}

  .faq-list{border-top:1px solid var(--line);}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-q{width:100%;background:none;border:none;text-align:left;cursor:pointer;padding:22px 4px;display:flex;justify-content:space-between;align-items:center;gap:20px;font-family:'Fraunces',serif;font-size:18px;font-weight:600;color:var(--ink);}
  .faq-q .plus{font-family:'IBM Plex Mono',monospace;font-size:20px;color:var(--red);transition:transform .2s ease;flex:none;}
  .faq-item.open .faq-q .plus{transform:rotate(45deg);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease;}
  .faq-a-inner{padding:0 4px 22px;color:var(--ink-soft);font-size:14.5px;line-height:1.7;max-width:70ch;}
  .faq-a-inner ul{margin:10px 0 0;padding-left:20px;}

  .final-cta{background:var(--ink);color:#fff;border-radius:26px;padding:60px 48px;text-align:center;}
  .final-cta h2{color:#fff;font-size:clamp(26px,3.4vw,36px);font-weight:600;}
  .final-cta p{color:rgba(255,255,255,.7);margin-top:14px;font-size:16px;}
  .final-cta .hero-cta{justify-content:center;margin-top:28px;}
  .final-cta .btn-ghost{border-color:rgba(255,255,255,.5);color:#fff;}

  footer.site{background:var(--bg-alt);border-top:1px solid var(--line);padding:44px 0 30px;margin-top:80px;}
  .footer-row{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px;}
  .footer-links{display:flex;gap:22px;flex-wrap:wrap;font-size:13.5px;color:var(--ink-soft);font-weight:600;}
  .footer-links a:hover{color:var(--red);}
  .copyright{font-size:13px;color:var(--ink-soft);}
  .disclaimer{margin-top:14px;font-size:12px;color:var(--ink-soft);max-width:84ch;}
  ::selection{background:var(--red);color:#fff;}

/* ===== Blog / article pages ===== */
.article-wrap{max-width:780px;margin:0 auto;padding:48px 28px 80px;}
.article-wrap h1{font-size:clamp(30px,4.4vw,42px);font-weight:600;line-height:1.12;margin-bottom:12px;}
.article-meta{font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--ink-soft);margin-bottom:30px;}
.article-body h2{font-size:24px;font-weight:600;margin:36px 0 12px;}
.article-body h3{font-size:18px;font-weight:600;margin:24px 0 8px;}
.article-body p{margin-bottom:14px;color:var(--ink-soft);font-size:15.5px;line-height:1.75;}
.article-body ul,.article-body ol{margin:0 0 14px;padding-left:24px;color:var(--ink-soft);font-size:15.5px;line-height:1.75;}
.article-body li{margin-bottom:6px;}
.article-body b,.article-body strong{color:var(--ink);}
.article-cta{background:var(--ink);color:#fff;border-radius:20px;padding:30px 28px;margin:40px 0 10px;}
.article-cta h3{color:#fff;font-size:20px;margin-bottom:8px;}
.article-cta p{color:rgba(255,255,255,.72);font-size:14px;margin-bottom:16px;}
.breadcrumbs{font-size:13px;font-weight:600;color:var(--ink-soft);margin-bottom:22px;display:flex;gap:8px;flex-wrap:wrap;}
.breadcrumbs a:hover{color:var(--red);}
.blog-index{max-width:900px;margin:0 auto;padding:48px 28px 80px;}
.blog-index h1{font-size:clamp(30px,4.4vw,42px);font-weight:600;margin-bottom:8px;}
.blog-index .sub{color:var(--ink-soft);margin-bottom:34px;}
.topic-hidden{display:none;}