:root {
      --bg: #081120;
      --panel: #0f172a;
      --panel-2: #121d34;
      --panel-3: #18253f;
      --text: #dce7f8;
      --muted: #9ab0cf;
      --white: #ffffff;
      --line: rgba(255,255,255,0.10);
      --primary: #f59e0b;
      --primary-2: #fb923c;
      --blue: #60a5fa;
      --green: #34d399;
      --red: #f87171;
      --shadow: 0 24px 60px rgba(0,0,0,0.28);
      --container: 1180px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
      color: var(--text);
      line-height: 1.72;
      background:
        radial-gradient(circle at top right, rgba(245, 158, 11, 0.12), transparent 18%),
        radial-gradient(circle at left top, rgba(96, 165, 250, 0.08), transparent 24%),
        linear-gradient(180deg, #07101d 0%, #0b1324 100%);
      overflow-x: hidden;
    }
    body.rtl {
      direction: rtl;
      font-family: "Segoe UI", Tahoma, Arial, sans-serif;
    }
    a { color: inherit; text-decoration: none; }
    img, svg { max-width: 100%; display: block; }
    .container { width: min(var(--container), calc(100% - 32px)); margin: 0 auto; position: relative; z-index: 2; }
    .section { padding: 88px 0; position: relative; }
    .muted { color: var(--muted); }

    .bg-icons { position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; }
    .bg-icons i {
      position: absolute;
      color: rgba(255,255,255,0.06);
      font-size: 120px;
    }
    .bg-icons .i1 { top: 120px; right: 4%; }
    .bg-icons .i2 { top: 760px; left: 1%; }
    .bg-icons .i3 { bottom: 160px; right: 9%; }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      backdrop-filter: blur(14px);
      background: rgba(8,17,32,0.84);
    }
    .nav {
      min-height: 80px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
    }
    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      min-width: 0;
    }
    .brand-badge {
      width: 44px;
      height: 44px;
      border-radius: 14px;
      display: grid;
      place-items: center;
      color: #111827;
      background: linear-gradient(135deg, var(--primary), var(--primary-2));
      box-shadow: 0 12px 24px rgba(245, 158, 11, 0.22);
      font-weight: 900;
      flex: 0 0 44px;
    }
    .brand-text { display: flex; flex-direction: column; line-height: 1.03; }
    .brand-text strong { color: var(--white); font-size: 1.12rem; }
    .brand-text span { color: var(--muted); font-size: .8rem; font-weight: 700; }

    .nav-right { display: flex; align-items: center; gap: 14px; }
    .nav-links { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
    .nav-links a {
      color: var(--muted);
      font-size: 14px;
      font-weight: 700;
      padding: 11px 14px;
      border-radius: 12px;
      transition: .2s ease;
    }
    .nav-links a:hover,
    .nav-links a.active {
      color: var(--white);
      background: rgba(255,255,255,0.05);
    }
    .lang-switch {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      padding: 4px;
      border-radius: 999px;
      background: rgba(255,255,255,0.04);
      border: 1px solid rgba(255,255,255,0.08);
    }
    .lang-btn {
      border: 0;
      min-width: 38px;
      height: 30px;
      border-radius: 999px;
      background: transparent;
      color: var(--muted);
      font-size: 12px;
      font-weight: 800;
      cursor: pointer;
      transition: .2s ease;
    }
    .lang-btn.active {
      color: #ffd79f;
      background: linear-gradient(135deg, rgba(245, 158, 11, 0.20), rgba(251, 146, 60, 0.18));
      box-shadow: inset 0 0 0 1px rgba(245, 158, 11, 0.22);
    }

    .hero {
      padding: 46px 0 38px;
      overflow: hidden;
    }
    .hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        radial-gradient(circle at 82% 20%, rgba(245,158,11,0.16), transparent 18%),
        radial-gradient(circle at 15% 18%, rgba(96,165,250,0.10), transparent 22%);
      pointer-events: none;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.12fr .88fr;
      gap: 30px;
      align-items: center;
    }
    .hero-copy h1 {
      margin: 0;
      color: var(--white);
      font-size: clamp(2.4rem, 5vw, 4.5rem);
      line-height: 0.98;
      letter-spacing: -0.04em;
    }
    .dialguard-mark {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      color: #ffd79f;
      margin-bottom: 16px;
      font-size: 1.08rem;
      font-weight: 800;
    }
    .hero-copy h2 {
      margin: 16px 0 18px;
      color: var(--white);
      font-size: clamp(1.28rem, 2.2vw, 1.9rem);
      line-height: 1.2;
      max-width: 760px;
    }
    .hero-copy p {
      margin: 0;
      color: var(--muted);
      font-size: 1.05rem;
      max-width: 760px;
    }
    .hero-actions {
      display: flex;
      gap: 14px;
      flex-wrap: wrap;
      margin-top: 28px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 50px;
      padding: 0 22px;
      border-radius: 14px;
      border: 1px solid transparent;
      font-weight: 800;
      transition: .25s ease;
    }
    .btn-primary {
      color: #1a1a1a;
      background: linear-gradient(135deg, var(--primary), var(--primary-2));
      box-shadow: 0 14px 28px rgba(245, 158, 11, 0.18);
    }
    .btn-primary:hover { transform: translateY(-1px); }
    .btn-secondary {
      color: var(--white);
      background: rgba(255,255,255,0.04);
      border-color: rgba(255,255,255,0.10);
    }

    .hero-panel {
      padding: 22px;
      border-radius: 28px;
      background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.025));
      border: 1px solid rgba(255,255,255,0.08);
      box-shadow: var(--shadow);
    }
    .hero-panel-title {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 10px;
      margin-bottom: 16px;
      color: var(--white);
      font-weight: 800;
    }
    .mini-stack { display: grid; gap: 12px; }
    .mini-card {
      padding: 16px 18px;
      border-radius: 18px;
      background: rgba(255,255,255,0.03);
      border: 1px solid rgba(255,255,255,0.07);
    }
    .mini-card strong { color: var(--white); display: block; margin-bottom: 4px; }
    .mini-card span { color: var(--muted); font-size: .95rem; display: block; }
    .mini-card.api { border-color: rgba(245,158,11,0.16); }
    .mini-card.manual { border-color: rgba(96,165,250,0.16); }
    .mini-card.rules { border-color: rgba(52,211,153,0.16); }

    .section-title { max-width: 860px; margin-bottom: 34px; }
    .section-title h2 {
      margin: 0 0 14px;
      color: var(--white);
      font-size: clamp(1.95rem, 4vw, 3rem);
      line-height: 1.1;
      letter-spacing: -0.03em;
    }
    .section-title p { margin: 0; color: var(--muted); }

    .workflow-wrap {
      padding: 34px;
      border-radius: 30px;
      background: linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.025));
      border: 1px solid rgba(255,255,255,0.08);
      box-shadow: var(--shadow);
      overflow: hidden;
    }
    .workflow-head {
      display: flex;
      align-items: flex-start;
      justify-content: space-between;
      gap: 18px;
      margin-bottom: 24px;
      flex-wrap: wrap;
    }
    .workflow-head h2 { margin: 0 0 8px; color: var(--white); font-size: clamp(1.8rem, 3vw, 2.5rem); }
    .workflow-head p { margin: 0; color: var(--muted); max-width: 760px; }
    .legend {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      align-items: center;
      justify-content: flex-end;
      color: var(--muted);
      font-size: 12px;
      font-weight: 700;
    }
    .legend span {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 11px;
      border-radius: 999px;
      background: rgba(255,255,255,0.04);
      border: 1px solid rgba(255,255,255,0.08);
    }
    .legend i {
      width: 18px;
      height: 3px;
      display: inline-block;
      border-radius: 999px;
      background: currentColor;
    }
    .lg-blue { color: #60a5fa; }
    .lg-orange { color: #f59e0b; }
    .lg-green { color: #34d399; }
    .lg-red { color: #f87171; }

    .process-diagram {
      position: relative;
      min-height: 760px;
      margin-top: 20px;
      padding: 30px;
      border-radius: 26px;
      border: 1px solid rgba(255,255,255,0.08);
      background:
        radial-gradient(circle at 50% 22%, rgba(245,158,11,0.10), transparent 28%),
        linear-gradient(180deg, rgba(255,255,255,0.035), rgba(255,255,255,0.018));
      overflow: hidden;
      isolation: isolate;
    }
    .desktop-diagram { display: block; }
    .mobile-diagram { display: none; }
    .diagram-canvas {
      position: absolute;
      inset: 0;
      width: 100%;
      height: 100%;
      pointer-events: none;
      z-index: 1;
    }
    .diagram-canvas path {
      fill: none;
      stroke-width: 4;
      stroke-linecap: round;
      stroke-linejoin: round;
      opacity: 0.98;
      filter: drop-shadow(0 0 8px rgba(255,255,255,0.08));
    }
    .diagram-canvas .blue { stroke: #60a5fa; }
    .diagram-canvas .orange { stroke: #f59e0b; }
    .diagram-canvas .green { stroke: #34d399; }
    .diagram-canvas .red { stroke: #f87171; }
    .diagram-canvas .neutral { stroke: #90a5c4; }

    .lane-label {
      position: absolute;
      z-index: 3;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 8px 14px;
      border-radius: 999px;
      color: #c5d3e9;
      font-size: 11px;
      font-weight: 800;
      letter-spacing: .14em;
      text-transform: uppercase;
      background: rgba(10,18,34,0.82);
      border: 1px solid rgba(255,255,255,0.10);
      backdrop-filter: blur(10px);
      white-space: nowrap;
      box-shadow: 0 10px 20px rgba(0,0,0,0.18);
    }
    .lane-control { top: 20px; left: 50%; transform: translateX(-50%); }
    .lane-core { top: 122px; left: 50%; transform: translateX(-50%); }
    .lane-enforce { top: 477px; left: 50%; transform: translateX(-50%); }
    .lane-output { top: 673px; left: 50%; transform: translateX(-50%); }
    .lane-input-left { top: 162px; left: 68px; }
    .lane-input-right { top: 162px; right: 68px; }

    .diagram-node {
      position: absolute;
      z-index: 2;
      padding: 18px 18px 15px;
      border-radius: 22px;
      border: 1px solid rgba(255,255,255,0.08);
      background: rgba(14,22,40,0.86);
      box-shadow: inset 0 1px 0 rgba(255,255,255,0.04), 0 18px 34px rgba(0,0,0,0.20);
      backdrop-filter: blur(8px);
    }
    .diagram-node h3 {
      margin: 0 0 8px;
      color: var(--white);
      font-size: 1.05rem;
      line-height: 1.2;
    }
    .diagram-node p {
      margin: 0;
      color: var(--muted);
      font-size: 13px;
      line-height: 1.55;
    }

    .diagram-node.pbx,
    .diagram-node.api {
      width: 18%;
      min-height: 250px;
      display: flex;
      flex-direction: column;
      justify-content: center;
      text-align: center;
    }
    .diagram-node.pbx {
      left: 3%;
      top: 176px;
      border-color: rgba(96,165,250,0.26);
      background: linear-gradient(180deg, rgba(96,165,250,0.14), rgba(96,165,250,0.05));
    }
    .diagram-node.api {
      right: 3%;
      top: 176px;
      border-color: rgba(245,158,11,0.28);
      background: linear-gradient(180deg, rgba(245,158,11,0.16), rgba(245,158,11,0.05));
    }

    .diagram-node.engine {
      left: 23%;
      top: 140px;
      width: 54%;
      min-height: 330px;
      padding: 26px;
      border-color: rgba(245,158,11,0.30);
      background: linear-gradient(180deg, rgba(245,158,11,0.18), rgba(251,146,60,0.06));
      box-shadow: 0 0 0 1px rgba(245,158,11,0.14), 0 28px 56px rgba(245,158,11,0.10), inset 0 1px 0 rgba(255,255,255,0.06);
      text-align: center;
    }
    .diagram-node.engine .mark {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      margin: 0 0 18px;
      color: #ffd79f;
      font-size: 1.4rem;
      font-weight: 900;
    }
    .diagram-node.engine .engine-note {
      max-width: 86%;
      margin-inline: auto;
    }

    .sub-node {
      position: absolute;
      bottom: 24px;
      width: 43%;
      min-height: 110px;
      padding: 16px;
      border-radius: 18px;
      border: 1px solid rgba(255,255,255,0.10);
      background: rgba(9,16,30,0.55);
      box-shadow: inset 0 1px 0 rgba(255,255,255,0.04);
      text-align: start;
    }
    .sub-node h3 {
      margin: 0 0 8px;
      color: var(--white);
      font-size: 1rem;
      line-height: 1.15;
    }
    .sub-node p {
      margin: 0;
      color: var(--muted);
      font-size: 12.5px;
      line-height: 1.5;
    }
    .sub-node.whitelist {
      left: 24px;
      border-color: rgba(52,211,153,0.24);
      background: linear-gradient(180deg, rgba(52,211,153,0.16), rgba(52,211,153,0.05));
    }
    .sub-node.blacklist {
      right: 24px;
      border-color: rgba(248,113,113,0.24);
      background: linear-gradient(180deg, rgba(248,113,113,0.16), rgba(248,113,113,0.05));
    }

    .diagram-node.manual {
      left: 35%;
      top: 526px;
      width: 30%;
      min-height: 92px;
      text-align: center;
      border-color: rgba(144,165,196,0.22);
      background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.03));
    }
    .diagram-node.ok,
    .diagram-node.stop {
      width: 23%;
      min-height: 110px;
      text-align: center;
    }
    .diagram-node.ok {
      left: 13%;
      bottom: 34px;
      border-color: rgba(52,211,153,0.26);
      background: linear-gradient(180deg, rgba(52,211,153,0.16), rgba(52,211,153,0.05));
    }
    .diagram-node.stop {
      right: 13%;
      bottom: 34px;
      border-color: rgba(248,113,113,0.24);
      background: linear-gradient(180deg, rgba(248,113,113,0.16), rgba(248,113,113,0.05));
    }

    .mobile-flow-group {
      display: grid;
      gap: 14px;
    }
    .mobile-lane {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      align-self: center;
      width: fit-content;
      max-width: 100%;
      margin: 0 auto;
      padding: 8px 14px;
      border-radius: 999px;
      color: #c5d3e9;
      font-size: 11px;
      font-weight: 800;
      letter-spacing: .14em;
      text-transform: uppercase;
      background: rgba(10,18,34,0.82);
      border: 1px solid rgba(255,255,255,0.10);
    }
    .mobile-arrow {
      display: flex;
      justify-content: center;
      align-items: center;
      height: 26px;
      color: #90a5c4;
      font-size: 24px;
      line-height: 1;
    }
    .mobile-split {
      display: grid;
      gap: 14px;
    }
    .footer-logo {
      margin: 0 0 24px;
      color: #7f93b2;
      font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
      font-size: 12px;
      line-height: 1.25;
      white-space: pre;
      overflow-x: auto;
      overflow-y: hidden;
      padding-bottom: 4px;
      -webkit-overflow-scrolling: touch;
    }
    .footer-logo-mobile {
      display: none;
      margin: 0 0 24px;
      color: #7f93b2;
      font-size: 28px;
      font-weight: 900;
      letter-spacing: -0.03em;
    }
    .footer-logo-mobile small {
      display: inline-block;
      font-size: 14px;
      color: #9ab0cf;
      vertical-align: super;
      margin-inline-start: 4px;
      font-weight: 800;
    }

    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 22px;
    }
    .card {
      padding: 24px;
      border-radius: 22px;
      background: linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.025));
      border: 1px solid rgba(255,255,255,0.08);
      box-shadow: var(--shadow);
    }
    .card h3 { margin: 14px 0 10px; color: var(--white); font-size: 1.2rem; }
    .card p { margin: 0; color: var(--muted); }
    .icon-wrap {
      width: 52px;
      height: 52px;
      border-radius: 16px;
      display: grid;
      place-items: center;
      color: #1a1a1a;
      background: linear-gradient(135deg, var(--primary), var(--primary-2));
      box-shadow: 0 10px 24px rgba(245,158,11,0.18);
      font-weight: 900;
    }

    .split {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
      align-items: start;
    }
    .list-card ul {
      list-style: none;
      padding: 0;
      margin: 20px 0 0;
      display: grid;
      gap: 14px;
    }
    .list-card li {
      display: flex;
      gap: 12px;
      align-items: flex-start;
      color: var(--muted);
    }
    .tick {
      width: 26px;
      height: 26px;
      border-radius: 999px;
      flex: 0 0 26px;
      display: grid;
      place-items: center;
      margin-top: 2px;
      background: rgba(245,158,11,0.14);
      color: #ffc975;
      border: 1px solid rgba(245,158,11,0.20);
      font-size: 13px;
      font-weight: 800;
    }
    .list-card strong { color: var(--white); }

    .source-list { display: grid; gap: 16px; }
    .source-item {
      padding: 18px 20px;
      border-radius: 20px;
      background: rgba(255,255,255,0.04);
      border: 1px solid rgba(255,255,255,0.08);
    }
    .source-item strong { color: var(--white); display: block; margin-bottom: 6px; }
    .source-item p { margin: 0 0 10px; color: var(--muted); }
    .source-item a {
      color: #ffd79f;
      font-weight: 800;
      word-break: break-word;
    }

    .faq { display: grid; gap: 14px; }
    .faq-item {
      border-radius: 18px;
      overflow: hidden;
      border: 1px solid rgba(255,255,255,0.08);
      background: rgba(255,255,255,0.04);
    }
    .faq-question {
      width: 100%;
      text-align: left;
      border: 0;
      background: transparent;
      color: var(--white);
      padding: 20px 22px;
      font-size: 1rem;
      font-weight: 800;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      gap: 20px;
      align-items: center;
    }
    body.rtl .faq-question { text-align: right; }
    .faq-answer {
      display: none;
      padding: 0 22px 20px;
      color: var(--muted);
    }
    .faq-item.active .faq-answer { display: block; }
    .faq-toggle { color: #ffc975; font-size: 1.2rem; line-height: 1; flex: 0 0 auto; }

    .cta-band {
      padding: 30px;
      border-radius: 28px;
      background: linear-gradient(135deg, rgba(245,158,11,0.18), rgba(251,146,60,0.10));
      border: 1px solid rgba(245,158,11,0.22);
      box-shadow: var(--shadow);
    }
    .cta-band h2 { margin: 0 0 10px; color: var(--white); }
    .cta-band p { margin: 0 0 18px; color: #d7e3f3; max-width: 900px; }

    .footer {
      padding: 28px 0 46px;
      color: var(--muted);
    }
    .footer-row {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
      flex-wrap: wrap;
      padding-top: 26px;
      border-top: 1px solid rgba(255,255,255,0.08);
    }

    @media (max-width: 1100px) {
      .process-diagram {
        min-height: 820px;
        padding-inline: 20px;
      }
      .diagram-node.pbx,
      .diagram-node.api { width: 19%; }
      .diagram-node.engine { width: 52%; left: 24%; }
      .diagram-node.manual { width: 34%; left: 33%; }
      .diagram-node.ok,
      .diagram-node.stop { width: 24%; }
      .sub-node { width: 38%; }
    }

    @media (max-width: 1080px) {
      .hero-grid, .split, .grid-3 { grid-template-columns: 1fr; }
      .workflow-head { flex-direction: column; align-items: flex-start; }
      .legend { justify-content: flex-start; }
    }

    @media (max-width: 900px) {
      .desktop-diagram { display: none; }
      .mobile-diagram { display: block; }
      .process-diagram {
        min-height: auto;
        padding: 18px;
      }
      .mobile-split {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 760px) {
      .section { padding: 72px 0; }
      .nav { min-height: 74px; }
      .nav-links { display: none; }
      .hero { padding-top: 28px; }
      .hero-actions { flex-direction: column; }
      .hero-actions .btn { width: 100%; }
      .workflow-wrap, .card, .hero-panel, .cta-band { padding: 20px; }
      .hero-copy h1 { font-size: 2.4rem; }
      .bg-icons i { font-size: 84px; }
      .footer-logo { display: none; }
      .footer-logo-mobile { display: block; }
      .mobile-split { grid-template-columns: 1fr; }
      .hero-panel-title { align-items: flex-start; flex-direction: column; }
    }