/* -----------------------------
      OperisPoint — Landing Page
      Single-file HTML + CSS
      Palette aligned to slate/teal/off-white
    -------------------------------- */

    :root{
      --slate-950:#0b1220;
      --slate-900:#0f1a2c;
      --slate-850:#142238;
      --slate-800:#1b2d47;
      --slate-700:#2b3f5f;
      --slate-600:#415a7a;

      --ink:#0f172a;
      --muted:#5b677a;

      --surface:#f5f2ef;      /* warm off-white */
      --surface-2:#ede8e3;
      --card:#ffffffcc;       /* translucent on warm background */
      --card-border:#d9d3cc;

      --teal:#3f7f85;         /* muted teal */
      --teal-2:#2f6f76;
      --teal-soft:#9fc3c6;

      --btn:#3a6d73;
      --btn-hover:#2f5b60;

      --shadow: 0 10px 30px rgba(15, 23, 42, .18);
      --shadow-soft: 0 8px 20px rgba(15, 23, 42, .12);

      --radius-xl: 22px;
      --radius-lg: 16px;
      --radius-md: 12px;

      --max: 1120px;
    }

    *{ box-sizing:border-box; }
    html,body{ height:100%; }
    body{
      margin:0;
      font-family: ui-serif, Georgia, "Times New Roman", Times, serif;
      color: var(--ink);
      background: var(--surface);
      line-height: 1.55;
    }

    a{ color: inherit; text-decoration:none; }
    .container{ width:min(var(--max), calc(100% - 48px)); margin:0 auto; }

    /* -----------------------------
      Top Nav
    -------------------------------- */
    header{
      position: sticky;
      top: 0;
      z-index: 10;
      background: rgba(245,242,239,.85);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid rgba(217,211,204,.7);
    }

    .nav{
      display:flex;
      align-items:center;
      justify-content:space-between;
      padding: 16px 0;
      gap: 18px;
    }

    .brand{
      display:flex;
      align-items:center;
      gap: 12px;
      min-width: 180px;
    }

    .logo{
      width: 34px;
      height: 34px;
      border-radius: 10px;
      display:grid;
      place-items:center;
      overflow:hidden;
      box-shadow: 0 6px 14px rgba(15,23,42,.18);
      background: linear-gradient(145deg, #223556, #0f1a2c);
      border: 1px solid rgba(255,255,255,.18);
    }

    /* Simple geometric placeholder mark (replace with your logo image if you have one) */
    .logo svg{ width: 100%; height: 100%; }
    .brand-name{
      font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
      font-weight: 600;
      letter-spacing: .2px;
      color: var(--slate-900);
      font-size: 18px;
    }
    .brand-name span{ color: var(--teal); }

    nav ul{
      display:flex;
      list-style:none;
      padding:0;
      margin:0;
      gap: 22px;
      align-items:center;
      font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
      font-size: 14px;
      color: rgba(15,23,42,.78);
    }

    .nav-cta{
      display:flex;
      gap: 10px;
      align-items:center;
      min-width: 180px;
      justify-content:flex-end;
    }

    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      padding: 10px 16px;
      border-radius: 12px;
      border: 1px solid rgba(15,23,42,.14);
      background: rgba(255,255,255,.75);
      font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
      font-weight: 600;
      font-size: 14px;
      letter-spacing: .2px;
      box-shadow: 0 8px 20px rgba(15,23,42,.08);
      transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
      cursor:pointer;
      white-space: nowrap;
    }
    .btn:hover{
      transform: translateY(-1px);
      box-shadow: 0 12px 26px rgba(15,23,42,.12);
      background: rgba(255,255,255,.92);
    }

    .btn-primary{
      background: linear-gradient(180deg, rgba(58,109,115,.95), rgba(47,91,96,.95));
      border: 1px solid rgba(255,255,255,.15);
      color: #f6fbfb;
      box-shadow: 0 12px 26px rgba(15,23,42,.20);
    }
    .btn-primary:hover{
      background: linear-gradient(180deg, rgba(47,91,96,.95), rgba(39,76,80,.95));
    }

    /* -----------------------------
      Hero
    -------------------------------- */
    .hero{
      position: relative;
      color: #eef2f8;
      background: radial-gradient(1200px 600px at 20% 0%, rgba(66,94,124,.45), transparent 60%),
                  radial-gradient(900px 500px at 90% 20%, rgba(63,127,133,.25), transparent 55%),
                  linear-gradient(180deg, var(--slate-850), var(--slate-900));
      overflow:hidden;
      border-bottom: 1px solid rgba(255,255,255,.08);
    }

    /* Subtle grid overlay like the screenshot */
    .hero::before{
      content:"";
      position:absolute;
      inset:-1px;
      background:
        linear-gradient(to right, rgba(255,255,255,.07) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255,255,255,.07) 1px, transparent 1px);
      background-size: 44px 44px;
      opacity: .25;
      transform: perspective(900px) rotateX(12deg);
      transform-origin: top;
      pointer-events:none;
      mask-image: radial-gradient(circle at 50% 18%, rgba(0,0,0,.9), transparent 70%);
    }

    /* Subtle “paper/texture” feel */
    .hero::after{
      content:"";
      position:absolute;
      inset:0;
      background: radial-gradient(800px 400px at 30% 20%, rgba(255,255,255,.06), transparent 65%),
                  radial-gradient(900px 500px at 70% 10%, rgba(0,0,0,.22), transparent 60%);
      opacity:.55;
      pointer-events:none;
      mix-blend-mode: overlay;
    }

    .hero-inner{
      position: relative;
      display:grid;
      grid-template-columns: 1.15fr .85fr;
      gap: 34px;
      padding: 72px 0 66px;
      align-items:start;
    }

    .hero h1{
      margin:0 0 14px;
      font-size: clamp(40px, 4vw, 56px);
      line-height: 1.08;
      letter-spacing: .2px;
      font-weight: 600;
    }
    .hero h1 .accent{ color: var(--teal-soft); }

    .hero p{
      margin: 0 0 18px;
      font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
      color: rgba(238,242,248,.86);
      max-width: 58ch;
      font-size: 15.5px;
    }
    .hero .motto{
      margin-top: 14px;
      color: rgba(238,242,248,.80);
      font-weight: 600;
      letter-spacing: .2px;
    }

    .hero-actions{
      display:flex;
      gap: 12px;
      margin-top: 22px;
      align-items:center;
      flex-wrap: wrap;
    }

    .hero-badge{
      display:inline-flex;
      align-items:center;
      gap: 10px;
      padding: 8px 12px;
      border-radius: 999px;
      border: 1px solid rgba(255,255,255,.14);
      background: rgba(15,23,42,.22);
      font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
      color: rgba(238,242,248,.82);
      font-size: 13px;
      width: fit-content;
    }
    .dot{
      width: 9px; height: 9px; border-radius: 50%;
      background: var(--teal-soft);
      box-shadow: 0 0 0 6px rgba(159,195,198,.14);
    }

    .hero-mark{
      display:flex;
      align-items:flex-start;
      justify-content:flex-end;
      padding-top: 8px;
    }

    .mark-card{
      width: min(320px, 100%);
      aspect-ratio: 1.15 / 1;
      border-radius: var(--radius-xl);
      background: rgba(255,255,255,.06);
      border: 1px solid rgba(255,255,255,.12);
      box-shadow: 0 18px 40px rgba(0,0,0,.28);
      position: relative;
      overflow:hidden;
    }
    .mark-card::before{
      content:"";
      position:absolute;
      inset:-60px;
      background: radial-gradient(circle at 40% 30%, rgba(159,195,198,.30), transparent 55%),
                  radial-gradient(circle at 70% 60%, rgba(255,255,255,.10), transparent 55%);
      opacity: .9;
      transform: rotate(12deg);
    }
    .mark-card .mark{
      position:absolute;
      inset: 22px;
      display:grid;
      place-items:center;
    }

    /* -----------------------------
      Section base
    -------------------------------- */
    section{ padding: 54px 0; }
    .section-title{
      margin:0 0 14px;
      text-align:center;
      font-size: clamp(30px, 3vw, 40px);
      font-weight: 600;
      letter-spacing: .15px;
    }
    .section-sub{
      text-align:center;
      color: var(--muted);
      font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
      max-width: 72ch;
      margin: 0 auto 26px;
      font-size: 15.5px;
    }

    /* -----------------------------
      “Tools vs Systems” section
    -------------------------------- */
    .divider{
      height: 1px;
      background: linear-gradient(to right, transparent, rgba(15,23,42,.10), transparent);
      margin: 22px auto;
      width: min(760px, 100%);
    }

    .bullets{
      display:grid;
      grid-template-columns: 1fr;
      gap: 10px;
      max-width: 760px;
      margin: 0 auto;
      padding: 0;
      list-style:none;
      font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
      color: rgba(15,23,42,.86);
    }
    .bullets li{
      display:flex;
      gap: 12px;
      align-items:flex-start;
      padding: 8px 10px;
      border-radius: 12px;
    }
    .arrow{
      width: 22px;
      height: 22px;
      border-radius: 8px;
      display:grid;
      place-items:center;
      margin-top: 1px;
      color: #fff;
      background: linear-gradient(180deg, rgba(63,127,133,.92), rgba(47,91,96,.92));
      box-shadow: 0 10px 18px rgba(15,23,42,.14);
      flex: 0 0 auto;
      font-size: 14px;
    }
    .bullets strong{ font-weight: 800; }

    /* -----------------------------
      Why choose cards
    -------------------------------- */
    .cards{
      display:grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
      margin-top: 26px;
    }
    .card{
      border-radius: var(--radius-lg);
      background: var(--card);
      border: 1px solid var(--card-border);
      box-shadow: var(--shadow-soft);
      padding: 18px 18px 16px;
      backdrop-filter: blur(8px);
    }
    .card-head{
      display:flex;
      align-items:center;
      gap: 12px;
      margin-bottom: 8px;
    }
    .icon{
      width: 40px; height: 40px;
      border-radius: 14px;
      display:grid;
      place-items:center;
      background: linear-gradient(145deg, rgba(20,34,56,.95), rgba(15,26,44,.95));
      border: 1px solid rgba(255,255,255,.10);
      box-shadow: 0 10px 18px rgba(15,23,42,.12);
      color: #eaf3f4;
      font-family: ui-sans-serif, system-ui;
      font-weight: 800;
      letter-spacing: .4px;
    }
    .card h3{
      margin:0;
      font-size: 18px;
      font-weight: 700;
      font-family: ui-serif, Georgia, "Times New Roman", Times, serif;
      color: rgba(15,23,42,.92);
      letter-spacing: .1px;
    }
    .card p{
      margin: 8px 0 0;
      color: rgba(15,23,42,.74);
      font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
      font-size: 14.5px;
    }

    /* -----------------------------
      Services section
    -------------------------------- */
    .cta-band{
      margin-top: 28px;
      text-align:center;
      padding: 10px 0 0;
    }

    .services-grid{
      display:grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
      margin-top: 18px;
    }
    .service{
      border-radius: var(--radius-lg);
      background: rgba(255,255,255,.70);
      border: 1px solid var(--card-border);
      box-shadow: var(--shadow-soft);
      padding: 18px;
      min-height: 170px;
    }
    .service h4{
      margin:0 0 10px;
      font-size: 18px;
      letter-spacing: .1px;
    }
    .service p{
      margin:0;
      color: rgba(15,23,42,.74);
      font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
      font-size: 14.5px;
    }

    /* -----------------------------
      Footer
    -------------------------------- */
    footer{
      padding: 26px 0;
      color: rgba(238,242,248,.86);
      background: linear-gradient(180deg, var(--slate-900), var(--slate-950));
      border-top: 1px solid rgba(255,255,255,.08);
    }
    .footer-inner{
      display:grid;
      grid-template-columns: 1.4fr 1fr 1fr 1fr;
      gap: 16px;
      align-items:flex-start;
    }
    .footer-brand{
      display:flex;
      align-items:center;
      gap: 12px;
    }
    .footer-brand .brand-name{ color: rgba(238,242,248,.92); }
    .footer-brand .brand-name span{ color: var(--teal-soft); }

    .foot-col h5{
      margin: 0 0 10px;
      font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
      font-size: 13px;
      letter-spacing: .4px;
      text-transform: uppercase;
      color: rgba(238,242,248,.70);
    }
    .foot-col a{
      display:block;
      padding: 6px 0;
      color: rgba(238,242,248,.85);
      font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
      font-size: 14px;
      opacity:.9;
    }
    .foot-col a:hover{ opacity: 1; text-decoration: underline; }

    .fineprint{
      margin-top: 14px;
      font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
      color: rgba(238,242,248,.62);
      font-size: 12.5px;
    }

    /* -----------------------------
      Responsive
    -------------------------------- */
    @media (max-width: 980px){
      .hero-inner{ grid-template-columns: 1fr; }
      .hero-mark{ justify-content:flex-start; }
      .mark-card{ width: 300px; }
      .cards, .services-grid{ grid-template-columns: 1fr; }
      .footer-inner{ grid-template-columns: 1fr 1fr; }
      nav ul{ display:none; } /* simple mobile */
    }
    @media (max-width: 540px){
      .container{ width: calc(100% - 28px); }
      .nav-cta{ min-width:auto; }
      .btn{ padding: 10px 14px; }
      .footer-inner{ grid-template-columns: 1fr; }
    }