:root {
  --bg: #07101d;
  --panel: rgba(16, 29, 47, .82);
  --panel-hover: rgba(22, 40, 64, .96);
  --line: rgba(148, 171, 204, .15);
  --text: #f5f8ff;
  --muted: #94a5bc;
  --blue: #4f7cff;
}

* { box-sizing: border-box; }

body {
  min-height: 100vh;
  color: var(--text);
  background: var(--bg);
  background-image: linear-gradient(rgba(255,255,255,.018) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px);
  background-size: 38px 38px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  overflow-x: hidden;
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
}

.page-glow { position: fixed; width: 30rem; height: 30rem; filter: blur(100px); opacity: .14; border-radius: 50%; pointer-events: none; }
.glow-one { background: #246cff; top: -16rem; left: 20%; }
.glow-two { background: #7c3aed; right: -18rem; bottom: -18rem; }
.container { max-width: 1180px; position: relative; z-index: 1; padding-left: max(.75rem, env(safe-area-inset-left)); padding-right: max(.75rem, env(safe-area-inset-right)); }

.brand { color: var(--text); }
.brand:hover { color: var(--text); }
.brand-mark { display: grid; place-items: center; width: 44px; height: 44px; border: 1px solid rgba(112,148,255,.55); border-radius: 13px; background: linear-gradient(145deg,#335bdb,#172d71); box-shadow: 0 8px 30px rgba(52,94,224,.28); font-weight: 800; }
.brand strong { letter-spacing: -.02em; }
.brand small, .section-heading span { color: var(--muted); font-size: .78rem; }
.install-button {
  color:#fff;
  background:linear-gradient(135deg,#5f83f4,#3f63d8);
  border:1px solid #7898ff;
  box-shadow:0 8px 24px rgba(48,88,218,.38), inset 0 1px 0 rgba(255,255,255,.18);
  font-weight:750;
  white-space:nowrap;
}
.install-button:hover, .install-button:focus-visible {
  color:#fff;
  background:linear-gradient(135deg,#7293ff,#4b70e8);
  border-color:#9bb1ff;
  box-shadow:0 10px 30px rgba(48,88,218,.52), 0 0 0 .2rem rgba(104,139,255,.16);
  transform:translateY(-1px);
}
.install-button:active {
  color:#fff !important;
  background:#385acb !important;
  border-color:#7898ff !important;
  transform:translateY(0);
}
.install-button[hidden] { display:none; }

.hero { min-height: 280px; }
.eyebrow, .modal-kicker { color: #6f93ff; font-size: .72rem; font-weight: 800; letter-spacing: .14em; }
h1 { letter-spacing: -.055em; line-height: 1.04; }
h1 span { color: #6c8dff; }
.lead { max-width: 680px; color: var(--muted); font-size: 1.08rem; line-height: 1.75; }
.privacy-note { color: #899cb6; font-size: .78rem; }
.section-heading { border-bottom: 1px solid var(--line); padding-bottom: .9rem; }

.tool-card { position: relative; min-height: 220px; padding: 1.45rem; color: var(--text); background: var(--panel); border: 1px solid var(--line); border-radius: 18px; -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px); touch-action: manipulation; transition: transform .22s ease, border-color .22s ease, background .22s ease, box-shadow .22s ease; }
.tool-card:hover, .tool-card:focus-visible { transform: translateY(-4px); border-color: rgba(103,137,255,.42); background: var(--panel-hover); box-shadow: 0 18px 45px rgba(0,0,0,.2); outline: none; }
.tool-icon { display: grid; place-items: center; width: 47px; height: 47px; margin-bottom: 2.25rem; border-radius: 13px; font-size: 1.3rem; }
.icon-blue { color:#7fa1ff; background:rgba(62,104,232,.16); }.icon-cyan { color:#5ed4e5; background:rgba(36,189,215,.14); }.icon-violet { color:#bb8eff; background:rgba(150,85,237,.15); }.icon-orange { color:#ffae73; background:rgba(241,125,52,.14); }.icon-green { color:#64dfa6; background:rgba(45,190,124,.14); }.icon-pink { color:#ff8eb6; background:rgba(232,73,133,.14); }
.tool-arrow { position: absolute; top: 1.55rem; right: 1.55rem; color: #64758d; font-size: 1.1rem; transition: color .2s, transform .2s; }
.tool-card:hover .tool-arrow { color: #91a8ff; transform: translate(2px,-2px); }
.tool-title { display:block; margin-bottom:.45rem; font-weight:750; font-size:1.03rem; }
.tool-description { display:block; max-width: 92%; color:var(--muted); font-size:.85rem; line-height:1.65; }

footer { color:#6f819a; border-top:1px solid var(--line); font-size:.75rem; }
footer b { color:#3e68de; }

.modal-content { color: var(--text); background: #101c2d; border: 1px solid rgba(147,170,205,.2); border-radius: 20px; box-shadow: 0 30px 80px rgba(0,0,0,.5); }
.modal-dialog { margin-top: max(.5rem, env(safe-area-inset-top)); margin-bottom: max(.5rem, env(safe-area-inset-bottom)); }
.modal-body { max-height: min(65vh, 560px); overflow-y: auto; -webkit-overflow-scrolling: touch; }
.modal-header, .modal-body, .modal-footer { padding-left: 1.5rem; padding-right: 1.5rem; }
.result-list { display:grid; gap:.65rem; }
.result-row { display:flex; align-items:flex-start; justify-content:space-between; gap:1rem; padding:.9rem 1rem; background:rgba(255,255,255,.035); border:1px solid rgba(255,255,255,.06); border-radius:12px; }
.result-row span { color:var(--muted); font-size:.82rem; }
.result-row strong { max-width: 65%; text-align:right; font-size:.86rem; overflow-wrap:anywhere; }
.loading-box { display:flex; align-items:center; gap:.8rem; color:var(--muted); padding:1.2rem 0; }
.error-note { padding:.8rem 1rem; color:#ffcf8b; background:rgba(255,173,64,.08); border:1px solid rgba(255,173,64,.16); border-radius:12px; font-size:.82rem; }
.port-form label { color:var(--muted); font-size:.78rem; font-weight:650; }
.port-form .form-control { min-height:46px; color:var(--text); background:rgba(255,255,255,.045); border-color:rgba(255,255,255,.1); border-radius:10px; }
.port-form .form-control:focus { color:var(--text); background:rgba(255,255,255,.06); border-color:#6687ef; box-shadow:0 0 0 .2rem rgba(79,115,232,.16); }
.port-form .form-control::placeholder { color:#64758d; }
.port-result-open { color:#72e6ad !important; }
.port-result-closed { color:#ffae73 !important; }
.speed-intro { color:var(--muted); font-size:.85rem; line-height:1.65; }
.speed-progress { height:7px; background:rgba(255,255,255,.07); border-radius:999px; overflow:hidden; }
.speed-progress > span { display:block; width:0; height:100%; background:linear-gradient(90deg,#4f73e8,#9b7cff); border-radius:inherit; transition:width .25s ease; }
.speed-metrics { display:grid; grid-template-columns:repeat(3,1fr); gap:.65rem; }
.speed-metric { padding:1rem .65rem; text-align:center; background:rgba(255,255,255,.035); border:1px solid rgba(255,255,255,.06); border-radius:12px; }
.speed-metric span { display:block; color:var(--muted); font-size:.72rem; }
.speed-metric strong { display:block; margin:.35rem 0 .1rem; font-size:1.3rem; }
.speed-metric small { color:#71839b; font-size:.67rem; }
.btn-primary { background:#4f73e8; border-color:#4f73e8; }
.btn { border-radius:10px; font-size:.85rem; padding:.58rem 1rem; }

@media (max-width: 767.98px) {
  nav { margin-bottom: 2.5rem !important; }
  .hero { min-height: auto; margin-bottom: 2.5rem !important; }
  h1 { font-size: clamp(2.35rem, 12vw, 3.4rem) !important; }
  .tool-card { min-height: 178px; }
  .tool-icon { margin-bottom: 1.65rem; }
  .result-row { flex-direction:column; gap:.25rem; }
  .result-row strong { max-width:100%; text-align:left; }
  .modal-dialog { align-items: flex-end; min-height: calc(100% - 1rem); }
  .modal-content { border-radius: 20px 20px 12px 12px; }
  .modal-footer .btn { min-height: 44px; flex: 1; }
}

@media (max-width: 380px) {
  .brand small { display: none; }
  .tool-card { padding: 1.2rem; }
  .speed-metrics { grid-template-columns:1fr; }
}

@media (hover: none) {
  .tool-card:hover { transform: none; }
  .tool-card:active { transform: scale(.985); background: var(--panel-hover); }
}

@media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior:auto !important; transition:none !important; } }