*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #f6f7fb;
  --panel: #ffffff;
  --ink: #101319;
  --muted: #667085;
  --muted-strong: #475467;
  --border: rgba(16, 19, 25, 0.12);
  --accent: #2563eb;
  --accent-dark: #1d4ed8;
  --red: #ef233c;
  --max: 1120px;
  --article: 980px;
  --shadow: 0 24px 70px rgba(15, 23, 42, 0.1);
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(37, 99, 235, 0.12), transparent 34rem),
    linear-gradient(180deg, #ffffff 0%, var(--bg) 100%);
  font-family: 'Instrument Sans', Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}

a {
  color: inherit;
}

img {
  display: block;
  max-width: 100%;
}

.page {
  width: min(var(--max), calc(100% - 2rem));
  margin: 0 auto;
  padding: 2rem 0 4rem;
}

.topbar,
.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--ink);
  text-decoration: none;
  font-size: 1.35rem;
  font-weight: 800;
}

.brand img {
  width: 42px;
  height: 42px;
  object-fit: contain;
}

.brand-accent {
  color: var(--red);
}

.nav a {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  min-height: 40px;
  padding: 0.6rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #ffffff;
  color: var(--ink);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 700;
}

.hero {
  width: min(var(--article), 100%);
  margin: 0 auto;
  padding: 5.2rem 0 2.2rem;
  text-align: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  color: var(--accent);
  font-family: 'DM Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  margin-top: 0.9rem;
  font-size: clamp(2.1rem, 4.6vw, 3.65rem);
  line-height: 1.05;
  letter-spacing: 0;
}

.lead {
  width: min(740px, 100%);
  margin: 1.15rem auto 0;
  color: var(--muted);
  font-size: clamp(1.02rem, 2vw, 1.16rem);
  line-height: 1.75;
}

.hero-actions,
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.8rem;
  margin-top: 1.55rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  min-height: 46px;
  padding: 0.78rem 1.15rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #ffffff;
  color: var(--ink);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 800;
  box-shadow: 0 14px 34px rgba(15, 23, 42, 0.07);
}

.btn img {
  width: 20px;
  height: 20px;
  object-fit: contain;
}

.article-hero-image {
  width: min(var(--article), 100%);
  margin: 1.6rem auto 2.2rem;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: var(--shadow);
}

.article-hero-image img {
  width: 100%;
  height: auto;
}

article {
  width: min(var(--article), 100%);
  margin: 0 auto;
  padding: clamp(1.4rem, 4vw, 2.2rem);
  border: 1px solid var(--border);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 22px 60px rgba(15, 23, 42, 0.07);
}

article > * + * {
  margin-top: 1.2rem;
}

h2 {
  margin-top: 2rem;
  font-size: clamp(1.55rem, 3vw, 2.2rem);
  line-height: 1.12;
  letter-spacing: 0;
}

h3 {
  margin-top: 1.5rem;
  font-size: 1.15rem;
  line-height: 1.3;
}

p,
li {
  color: var(--muted-strong);
  font-size: 1rem;
}

article a {
  color: var(--accent-dark);
  font-weight: 800;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

ul,
ol {
  padding-left: 1.25rem;
}

li + li {
  margin-top: 0.5rem;
}

.summary-box,
.cta-box,
.note-box {
  padding: 1.25rem;
  border: 1px solid rgba(37, 99, 235, 0.2);
  border-radius: 8px;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.08), rgba(255, 255, 255, 0.92));
}

.note-box {
  border-color: rgba(245, 158, 11, 0.28);
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.12), rgba(255, 255, 255, 0.92));
}

.summary-box strong,
.cta-box strong,
.note-box strong {
  color: var(--ink);
}

.step-list {
  display: grid;
  gap: 0.85rem;
  padding-left: 0;
  list-style: none;
  counter-reset: steps;
}

.step-list li {
  counter-increment: steps;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.85rem;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #ffffff;
}

.step-list li::before {
  content: counter(steps);
  width: 2rem;
  height: 2rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: var(--accent);
  color: #ffffff;
  font-size: 0.88rem;
  font-weight: 900;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
  margin-top: 1.1rem;
}

.feature-card {
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #ffffff;
}

.feature-card i {
  margin-bottom: 0.7rem;
  color: var(--accent);
  font-size: 1.2rem;
}

.feature-card strong {
  display: block;
  margin-bottom: 0.25rem;
  color: var(--ink);
}

.footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 500;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer a {
  font-weight: 500;
  text-decoration: none;
}

@media (max-width: 760px) {
  .topbar,
  .footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero {
    padding-top: 3.5rem;
    text-align: left;
  }

  .hero-actions,
  .cta-actions {
    justify-content: flex-start;
  }

  .btn {
    width: 100%;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }
}

    /* Polished article ending: FAQ, safety CTA, and related guides. */
    #faq {
      position: relative;
      margin-top: 4rem;
      padding-top: 1.4rem;
    }

    #faq::before {
      position: absolute;
      top: 0;
      left: 0;
      width: 3rem;
      height: 4px;
      border-radius: 999px;
      background: linear-gradient(90deg, var(--accent), #42a5ff);
      content: "";
    }

    .faq-list {
      display: grid;
      gap: 0.75rem;
      margin-top: 1.35rem;
      border: 0;
    }

    .faq-item {
      overflow: hidden;
      border: 1px solid #dce5f1;
      border-radius: 14px;
      background: linear-gradient(135deg, #ffffff 0%, #f7faff 100%);
      box-shadow: 0 8px 24px rgba(15, 31, 54, 0.05);
      transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
    }

    .faq-item:hover {
      border-color: #aac5ff;
      box-shadow: 0 12px 30px rgba(32, 102, 235, 0.1);
      transform: translateY(-1px);
    }

    .faq-item[open] {
      border-color: #8eb4ff;
      background: #ffffff;
      box-shadow: 0 14px 34px rgba(32, 102, 235, 0.12);
    }

    .faq-item summary {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1rem;
      min-height: 0;
      padding: 1.05rem 1.15rem;
      cursor: pointer;
      list-style: none;
      font-size: 1rem;
      line-height: 1.45;
    }

    .faq-item summary::-webkit-details-marker {
      display: none;
    }

    .faq-item summary::after {
      flex: 0 0 auto;
      margin-left: auto;
      border: 0;
      background: transparent;
      color: var(--accent);
      content: "+";
      font-size: 1.55rem;
      font-weight: 700;
      line-height: 1;
      transform: none;
    }

    .faq-item[open] summary::after {
      content: "-";
      transform: none;
    }

    .faq-item p {
      margin: 0;
      padding: 0 4.25rem 1.2rem 1.15rem;
      color: #52647d;
      line-height: 1.75;
    }

    .summary-box {
      position: relative;
      overflow: hidden;
      margin: 2.25rem 0 0;
      padding: 1.55rem 1.6rem 1.55rem 5rem;
      border: 1px solid #b9d0ff;
      border-radius: 18px;
      background:
        radial-gradient(circle at 100% 0%, rgba(66, 165, 255, 0.2), transparent 38%),
        linear-gradient(135deg, #f2f7ff 0%, #ffffff 72%);
      box-shadow: 0 18px 45px rgba(32, 102, 235, 0.1);
    }

    .summary-box::before {
      position: absolute;
      top: 1.55rem;
      left: 1.5rem;
      display: grid;
      width: 2.6rem;
      height: 2.6rem;
      place-items: center;
      border-radius: 12px;
      background: var(--accent);
      color: #ffffff;
      content: "\f019";
      font-family: "Font Awesome 6 Free";
      font-size: 1.05rem;
      font-weight: 900;
      box-shadow: 0 8px 18px rgba(32, 102, 235, 0.25);
    }

    .summary-box p {
      margin: 0;
      color: #465b76;
      line-height: 1.7;
    }

    .summary-box p + p {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: center;
      gap: 0.75rem;
      margin-top: 1rem;
      font-size: 0;
    }

    .summary-box p + p a {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 0.6rem;
      width: min(100%, 19rem);
      min-height: 3rem;
      padding: 0.7rem 1rem;
      border: 1px solid var(--accent);
      border-radius: 10px;
      background: var(--accent);
      color: #ffffff;
      font-size: 0.9rem;
      font-weight: 800;
      line-height: 1.25;
      text-decoration: none;
      box-shadow: 0 8px 18px rgba(32, 102, 235, 0.18);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }

    .summary-box p + p a::before {
      font-family: "Font Awesome 6 Brands";
      font-size: 1.15rem;
      font-weight: 400;
      line-height: 1;
    }

    .summary-box p + p a:nth-of-type(1)::before {
      content: "\f268";
    }

    .summary-box p + p a:nth-of-type(2) {
      background: #ffffff;
      color: var(--accent);
      box-shadow: none;
    }

    .summary-box p + p a:nth-of-type(2)::before {
      content: "\f282";
    }

    .summary-box p + p a:hover {
      transform: translateY(-2px);
      box-shadow: 0 11px 24px rgba(32, 102, 235, 0.24);
    }

    .related-guides {
      margin-top: 3.25rem;
      padding-top: 0.25rem;
    }

    .related-guides h2 {
      margin-bottom: 1.25rem;
    }

    .related-guides ul {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 0.85rem;
      margin: 0;
      padding: 0;
      list-style: none;
    }

    .related-guides li {
      display: flex;
      margin: 0;
    }

    .related-guides a {
      position: relative;
      display: flex;
      width: 100%;
      min-height: 8.5rem;
      flex-direction: column;
      justify-content: space-between;
      padding: 1.15rem 1.15rem 1rem;
      border: 1px solid #dce5f1;
      border-radius: 15px;
      background: #ffffff;
      color: var(--ink);
      font-weight: 800;
      line-height: 1.45;
      text-decoration: none;
      box-shadow: 0 10px 28px rgba(15, 31, 54, 0.06);
      transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
    }

    .related-guides a::before {
      display: grid;
      width: 2rem;
      height: 2rem;
      margin-bottom: 1rem;
      place-items: center;
      border-radius: 9px;
      background: #eaf1ff;
      color: var(--accent);
      content: "\f02d";
      font-family: "Font Awesome 6 Free";
      font-size: 0.85rem;
      font-weight: 900;
    }

    .related-guides a::after {
      align-self: flex-end;
      color: var(--accent);
      content: "\2192";
      font-size: 1.2rem;
      line-height: 1;
    }

    .related-guides a:hover {
      border-color: #8eb4ff;
      box-shadow: 0 16px 36px rgba(32, 102, 235, 0.13);
      transform: translateY(-3px);
    }

    @media (max-width: 760px) {
      #faq {
        margin-top: 3.25rem;
      }

      .summary-box {
        padding: 4.9rem 1.1rem 1.2rem;
      }

      .summary-box::before {
        top: 1.25rem;
        left: 1.1rem;
      }

      .summary-box p + p {
        align-items: stretch;
        flex-direction: column;
      }

      .summary-box p + p a {
        justify-content: center;
        text-align: center;
      }

      .related-guides ul {
        grid-template-columns: 1fr;
      }

      .related-guides a {
        min-height: 0;
      }
    }

    @media (max-width: 480px) {
      .faq-item summary {
        padding: 0.95rem;
      }

      .faq-item p {
        padding: 0 0.95rem 1.05rem;
      }
    }

    /* Compact browser store buttons with local brand logos. */
    .summary-box p + p a,
    .summary-box p + p a:nth-of-type(2) {
      width: 11.75rem;
      min-height: 3.25rem;
      padding: 0.75rem 1rem;
      border: 1px solid #d7dce4;
      border-radius: 9px;
      background: #ffffff;
      color: var(--ink);
      font-size: 0.98rem;
      font-weight: 800;
      box-shadow: 0 8px 22px rgba(15, 31, 54, 0.07);
    }

    .summary-box p + p a::before {
      width: 1.35rem;
      height: 1.35rem;
      flex: 0 0 1.35rem;
      background-position: center;
      background-repeat: no-repeat;
      background-size: contain;
      content: "";
      font-size: 0;
    }

    .summary-box p + p a:nth-of-type(1)::before {
      background-image: url("../img/chrome.svg");
      content: "";
    }

    .summary-box p + p a:nth-of-type(2)::before {
      background-image: url("../img/edge.svg");
      content: "";
    }

    .summary-box p + p a:hover {
      border-color: #aeb8c7;
      background: #ffffff;
      color: var(--ink);
      box-shadow: 0 12px 26px rgba(15, 31, 54, 0.12);
    }

    @media (max-width: 480px) {
      .summary-box p + p a,
      .summary-box p + p a:nth-of-type(2) {
        width: 100%;
      }
    }