:root{
    --ink:#0B1220; --ink-2:#16202E; --paper:#FBFCFD; --paper-2:#F4F7FA; --card:#FFFFFF;
    --text:#28313E; --muted:#67717E; --line:#E5EAF0; --line-2:#D8DFE7;
    --accent:#0E9E6E; --accent-ink:#0A7A55; --accent-soft:#E9F7F1; --accent-2:#57E6B0;
    --mono:'IBM Plex Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
    --sans:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
    --display:'Space Grotesk','Inter',sans-serif;
    --r:12px; --maxw:1120px;
    --sh:0 1px 2px rgba(11,18,32,.04), 0 14px 34px -18px rgba(11,18,32,.22);
    --sh-lg:0 2px 4px rgba(11,18,32,.05), 0 30px 60px -28px rgba(11,18,32,.32);
  }
  *{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{margin:0;font-family:var(--sans);color:var(--text);background:var(--paper);line-height:1.62;font-size:16.5px;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
  h1,h2,h3{font-family:var(--display);color:var(--ink);margin:0 0 .5em;letter-spacing:-.02em;font-weight:600}
  h1{font-size:clamp(2.4rem,5.4vw,3.7rem);line-height:1.03;font-weight:700}
  h2{font-size:clamp(1.6rem,3.4vw,2.35rem);line-height:1.12}
  h3{font-size:1.12rem;letter-spacing:-.01em}
  p{margin:0 0 1rem}
  a{color:var(--accent-ink);text-decoration:none}
  a:hover{text-decoration:underline}
  .wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
  /* mono eyebrow */
  .kicker{font-family:var(--mono);font-size:.72rem;font-weight:500;letter-spacing:.18em;text-transform:uppercase;color:var(--accent-ink);display:inline-flex;align-items:center;gap:.6rem;margin-bottom:1.1rem}
  .kicker::before{content:"";width:8px;height:8px;background:var(--accent);border-radius:2px;transform:rotate(45deg);flex:0 0 8px}
  .kicker.on-dark{color:var(--accent-2)}
  /* buttons */
  .btn{display:inline-flex;align-items:center;gap:.5rem;font-family:var(--sans);font-weight:600;font-size:1rem;border-radius:9px;padding:.85rem 1.4rem;cursor:pointer;border:1.5px solid transparent;transition:transform .13s ease,box-shadow .13s ease,background .13s ease,border-color .13s ease}
  .btn-primary{background:var(--ink);color:#fff;box-shadow:0 10px 24px -12px rgba(11,18,32,.7)}
  .btn-primary:hover{background:#1a2534;transform:translateY(-1px);box-shadow:0 14px 30px -12px rgba(11,18,32,.8);text-decoration:none}
  .btn-ghost{background:#fff;color:var(--ink);border-color:var(--line-2)}
  .btn-ghost:hover{border-color:var(--accent);color:var(--accent-ink);text-decoration:none}
  .btn .arrow{color:var(--accent-2);font-family:var(--mono)}
  .btn-primary .price{opacity:.55;font-weight:500;font-family:var(--mono);font-size:.9rem}
  /* header */
  header{position:sticky;top:0;z-index:60;background:rgba(251,252,253,.82);backdrop-filter:saturate(160%) blur(10px);border-bottom:1px solid var(--line)}
  .nav{display:flex;align-items:center;justify-content:space-between;height:66px}
  .brand{display:flex;align-items:center;gap:.6rem;font-family:var(--display);font-weight:700;font-size:1.22rem;color:var(--ink);letter-spacing:-.02em}
  .brand b{color:var(--accent-ink);font-weight:700}
  .nav-links{display:flex;gap:1.6rem}
  .nav-links a{font-family:var(--mono);font-size:.78rem;letter-spacing:.06em;color:var(--muted);text-transform:uppercase}
  .nav-links a:hover{color:var(--ink);text-decoration:none}
  .nav .btn{padding:.5rem 1rem;font-size:.9rem}
  /* dot grid */
  .dotgrid{background-image:radial-gradient(rgba(11,18,32,.055) 1px,transparent 1px);background-size:24px 24px}
  /* hero */
  .hero{border-bottom:1px solid var(--line);position:relative;overflow:hidden}
  .hero::after{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(11,18,32,.05) 1px,transparent 1px);background-size:26px 26px;-webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.6),transparent 80%);mask-image:linear-gradient(180deg,rgba(0,0,0,.6),transparent 80%);pointer-events:none}
  .hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.12fr .88fr;gap:52px;align-items:center;padding:78px 0 66px}
  .lede{font-size:1.16rem;color:#3a4453;max-width:40ch}
  .lede .def{color:var(--ink);font-weight:500}
  .cta-row{display:flex;gap:14px;flex-wrap:wrap;margin:30px 0 18px}
  .trust{font-family:var(--mono);font-size:.78rem;color:var(--muted);letter-spacing:.02em;display:flex;align-items:center;gap:.55rem}
  .trust svg{color:var(--accent)}
  .shot{width:100%;height:auto;border-radius:14px;border:1px solid var(--line-2);box-shadow:var(--sh-lg);display:block}
  /* sections */
  section{padding:84px 0}
  .band{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .lead{font-size:1.12rem;max-width:62ch;color:#3a4453}
  /* policy grid */
  .policies{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:30px}
  .pol{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:15px 16px;display:flex;flex-direction:column;gap:.5rem;box-shadow:var(--sh)}
  .pol-top{display:flex;align-items:center;justify-content:space-between;gap:.5rem}
  .pol .idx{font-family:var(--mono);font-size:.72rem;color:var(--muted)}
  .pol .tsc{font-family:var(--mono);font-size:.68rem;font-weight:500;color:var(--accent-ink);background:var(--accent-soft);padding:2px 7px;border-radius:5px;letter-spacing:.02em}
  .pol b{color:var(--ink);font-weight:600;font-size:.96rem;line-height:1.3;font-family:var(--display);letter-spacing:-.01em}
  .foot-note{margin-top:22px;color:var(--muted);font-size:.98rem}
  .foot-note b{color:var(--ink);font-weight:600}
  /* split */
  .split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
  .chk{display:flex;gap:.65rem;align-items:flex-start;margin:.5rem 0;color:#3a4453}
  .chk .dot{flex:0 0 20px;width:20px;height:20px;border-radius:6px;background:var(--accent-soft);display:inline-flex;align-items:center;justify-content:center;margin-top:2px}
  .chk .dot svg{width:11px;height:11px;color:var(--accent-ink)}
  /* dark section */
  .dark{background:var(--ink);color:#c7d2df;position:relative;overflow:hidden}
  .dark::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.045) 1px,transparent 1px);background-size:26px 26px}
  .dark::after{content:"";position:absolute;top:-30%;right:-10%;width:600px;height:600px;background:radial-gradient(circle,rgba(14,158,110,.16),transparent 62%);pointer-events:none}
  .dark .wrap{position:relative;z-index:1}
  .dark h2{color:#fff}
  .dark .lead{color:#aebccb}
  .cardrow{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:28px}
  .dark .card{background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.09);border-radius:12px;padding:24px}
  .dark .card h3{color:#fff;margin-bottom:.4rem;display:flex;align-items:center;gap:.6rem}
  .dark .card .tag{font-family:var(--mono);font-size:.66rem;color:var(--accent-2);border:1px solid rgba(87,230,176,.3);padding:2px 6px;border-radius:5px}
  .dark .card p{color:#a9b7c6;margin:0}
  /* personas */
  .personas{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:30px}
  .persona{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:24px;box-shadow:var(--sh)}
  .persona .role{font-family:var(--mono);font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;color:var(--accent-ink);margin-bottom:.6rem}
  .persona h3{margin-bottom:.35rem}
  .persona p{color:var(--muted);margin:0;font-size:.98rem}
  /* comparison */
  .cmp{width:100%;border-collapse:separate;border-spacing:0;margin-top:26px;background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:hidden;box-shadow:var(--sh)}
  .cmp th,.cmp td{padding:15px 18px;text-align:left;border-bottom:1px solid var(--line);font-size:.98rem}
  .cmp thead th{font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);background:var(--paper-2);font-weight:500}
  .cmp tbody tr:last-child td{border-bottom:0}
  .cmp td:nth-child(2){font-family:var(--mono);color:var(--muted);white-space:nowrap}
  .cmp .row-us td{background:var(--accent-soft)}
  .cmp .row-us td:first-child{font-weight:600;color:var(--ink)}
  .cmp .row-us td:nth-child(2){color:var(--accent-ink)}
  /* magnet */
  .magnet{display:grid;grid-template-columns:1.35fr .65fr;gap:32px;align-items:center}
  .magnet .btn-primary{background:var(--accent);box-shadow:0 12px 30px -12px rgba(14,158,110,.7)}
  .magnet .btn-primary:hover{background:#0ba876}
  /* faq */
  details{border-bottom:1px solid var(--line);padding:4px 0}
  summary{cursor:pointer;font-family:var(--display);font-weight:600;color:var(--ink);padding:18px 0;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:1rem;font-size:1.05rem}
  summary::-webkit-details-marker{display:none}
  summary::after{content:"+";font-family:var(--mono);color:var(--accent-ink);font-size:1.3rem;font-weight:400}
  details[open] summary::after{content:"–"}
  details .a{padding:0 0 18px;margin:0;color:#3a4453;max-width:70ch}
  /* final */
  .final{text-align:center;max-width:640px;margin:0 auto}
  .final .price{font-family:var(--mono);color:var(--accent-2);font-size:.95rem;margin:.4rem 0 1.5rem;letter-spacing:.02em}
  .final .btn-primary{background:var(--accent);color:#04180F;box-shadow:0 16px 40px -14px rgba(14,158,110,.6)}
  .final .btn-primary:hover{background:#3fdca0}
  /* footer */
  footer{background:var(--ink);color:#8493a4;padding:44px 0;font-size:.9rem;border-top:1px solid rgba(255,255,255,.06)}
  .foot-row{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;align-items:center}
  .foot-row .brand{color:#fff}.foot-row .brand b{color:var(--accent-2)}
  .foot-links{font-family:var(--mono);font-size:.76rem;letter-spacing:.04em;display:flex;gap:1.2rem}
  .foot-links a{color:#aebccb}
  .byline{margin-top:20px;color:#aebccb;font-size:.92rem}
  .byline a{color:#fff;font-weight:500}
  .disc{margin-top:12px;font-size:.8rem;color:#5f6f80;max-width:78ch;line-height:1.55}
  .sticky{display:none}
  @media(max-width:880px){
    .hero-inner,.split,.magnet{grid-template-columns:1fr;gap:32px}
    .policies{grid-template-columns:1fr 1fr}
    .personas,.cardrow{grid-template-columns:1fr}
    .nav-links{display:none}
    .hero .art{order:-1}
    .sticky{display:flex;position:fixed;bottom:0;left:0;right:0;z-index:70;background:#fff;border-top:1px solid var(--line);padding:10px 16px;gap:12px;align-items:center;justify-content:space-between;box-shadow:0 -8px 24px -12px rgba(11,18,32,.25)}
    .sticky .lbl{font-family:var(--mono);font-size:.82rem;color:var(--ink)}
    .sticky .btn{flex:0 0 auto}
    body{padding-bottom:68px}
  }
  @media(max-width:520px){.policies{grid-template-columns:1fr}}


/* --- article / prose pages --- */
.article{max-width:760px;margin:0 auto;padding:52px 24px 8px}
.article h1{font-size:clamp(2rem,4.4vw,2.85rem);margin:.6rem 0 .5rem}
.byline{font-family:var(--mono);font-size:.78rem;color:var(--muted);margin-bottom:1.8rem;letter-spacing:.02em}
.byline a{color:var(--accent-ink)}
.lead-intro{font-size:1.2rem;color:#3a4453;border-left:3px solid var(--accent);padding-left:1rem;margin:0 0 2rem}
.prose{font-size:1.07rem;color:#2b3646}
.prose h2{font-size:1.5rem;margin:2.2rem 0 .6rem}
.prose h3{font-size:1.15rem;margin:1.6rem 0 .4rem}
.prose p{margin:0 0 1.1rem}
.prose ul{margin:0 0 1.3rem;padding-left:1.15rem}
.prose li{margin:.35rem 0}
.prose strong{color:var(--ink);font-weight:600}
.article-cta{background:var(--ink);color:#cfdae6;border-radius:14px;padding:26px 28px;margin:2.6rem 0;position:relative;overflow:hidden}
.article-cta::after{content:"";position:absolute;top:-40%;right:-8%;width:340px;height:340px;background:radial-gradient(circle,rgba(14,158,110,.18),transparent 62%)}
.article-cta h3{color:#fff;margin:0 0 .4rem;position:relative}
.article-cta p{margin:0 0 1rem;color:#aebccb;position:relative}
.article-cta .btn{position:relative}
.article-faq{margin-top:2.6rem}
.related{border-top:1px solid var(--line);margin-top:2.6rem;padding-top:1.2rem}
.related-title{font-family:var(--mono);font-size:.74rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:.6rem}
.related a{display:block;padding:.45rem 0;color:var(--ink);font-family:var(--display);font-weight:600}
.guides{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:26px}
.guide-card{display:block;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:20px;box-shadow:var(--sh)}
.guide-card:hover{border-color:var(--accent);text-decoration:none}
.guide-card b{color:var(--ink);font-family:var(--display);font-size:1.04rem;display:block;margin-bottom:.3rem}
.guide-card span{color:var(--muted);font-size:.92rem}
@media(max-width:880px){.guides{grid-template-columns:1fr}}