:root {
  --bg: #f5f7f6;
  --surface: #ffffff;
  --ink: #18211f;
  --muted: #5b6662;
  --line: #d9e0dd;
  --accent: #6d3fd1;
  --accent-dark: #4b278f;
  --accent-soft: #efe9ff;
  --purple: #8d4de8;
  --purple-deep: #6933b5;
  --gold: #d5a021;
  --shadow: 0 18px 45px rgba(24, 33, 31, 0.12);
  --radius: 8px;
  --wrap: min(1120px, calc(100% - 32px));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  letter-spacing: 0;
}

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

a {
  color: var(--accent-dark);
  text-decoration-thickness: 2px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--purple);
}

a:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 4px;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  line-height: 1.15;
  letter-spacing: 0;
}

h1 {
  max-width: 820px;
  font-size: clamp(2.25rem, 7vw, 4.8rem);
  margin-bottom: 1rem;
}

h2 {
  font-size: clamp(1.55rem, 4vw, 2.35rem);
  margin-bottom: 1rem;
}

h3 {
  font-size: 1.12rem;
  margin-bottom: 0.55rem;
}

p {
  margin-bottom: 1rem;
}

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

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

.wrap {
  width: var(--wrap);
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 20;
  transform: translateY(-160%);
  background: var(--ink);
  color: #fff;
  padding: 0.65rem 0.9rem;
  border-radius: var(--radius);
}

.skip-link:focus {
  transform: translateY(0);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}

.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 64px;
}

.site-mark {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--ink);
  font-weight: 700;
  text-decoration: none;
}

.site-mark__logo {
  width: 36px;
  height: 38px;
  object-fit: contain;
  border-radius: 6px;
}

.nav {
  display: none;
  align-items: center;
  gap: 1rem;
  font-size: 0.92rem;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
}

.nav a:hover {
  color: var(--accent-dark);
}

.hero {
  position: relative;
  min-height: 620px;
  display: grid;
  align-items: end;
  overflow: hidden;
  background: var(--ink);
}

.hero__image,
.hero__shade {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero__image {
  object-fit: cover;
}

.hero__shade {
  background:
    linear-gradient(90deg, rgba(12, 16, 15, 0.88), rgba(12, 16, 15, 0.46) 56%, rgba(12, 16, 15, 0.18)),
    linear-gradient(0deg, rgba(12, 16, 15, 0.72), transparent 44%);
}

.hero__content {
  position: relative;
  z-index: 1;
  padding-block: 5.5rem 4rem;
  color: #fff;
}

.hero__intro {
  max-width: 720px;
  color: rgba(255, 255, 255, 0.88);
  font-size: 1.1rem;
}

.eyebrow,
.kicker {
  color: var(--gold);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.6rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  padding: 0.72rem 1rem;
  font-weight: 800;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
}

.button--primary {
  background: var(--purple);
  color: #fff;
  box-shadow: 0 12px 22px rgba(141, 77, 232, 0.24);
}

.button--primary:hover {
  background: var(--purple-deep);
  color: #fff;
}

.button--secondary {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.48);
  color: #fff;
}

.button--secondary:hover {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
}

.button--inline {
  background: var(--accent);
  color: #fff;
  margin-top: 0.5rem;
}

.button--inline:hover {
  background: var(--accent-dark);
  color: #fff;
}

.notice {
  margin-block: 1rem 2rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-left: 5px solid var(--gold);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--muted);
  box-shadow: 0 10px 24px rgba(24, 33, 31, 0.06);
}

.notice p {
  margin: 0;
}

.article {
  display: grid;
  gap: 1.25rem;
  margin-bottom: 3rem;
}

.toc {
  align-self: start;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 1rem;
  box-shadow: 0 12px 24px rgba(24, 33, 31, 0.06);
}

.toc h2 {
  margin-bottom: 0.7rem;
  font-size: 1.05rem;
}

.toc a {
  display: block;
  padding-block: 0.3rem;
  color: var(--muted);
  text-decoration: none;
}

.toc a:hover {
  color: var(--accent-dark);
}

.article__body {
  min-width: 0;
}

.section-block {
  padding: clamp(1.25rem, 4vw, 2rem);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 12px 26px rgba(24, 33, 31, 0.06);
}

.section-block + .section-block {
  margin-top: 1.25rem;
}

.section-block--split {
  display: grid;
  gap: 1.25rem;
}

.text-link {
  display: inline-flex;
  font-weight: 800;
}

.feature-grid {
  display: grid;
  gap: 0.85rem;
  margin-block: 1.25rem;
}

.feature {
  min-height: 150px;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--accent-soft);
}

.feature p {
  margin-bottom: 0;
}

.media-block {
  margin: 1.4rem 0 0;
}

.media-block img {
  width: 100%;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

figcaption {
  margin-top: 0.65rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.check-list {
  list-style: none;
  padding-left: 0;
}

.check-list li {
  position: relative;
  padding-left: 1.6rem;
}

.check-list li::before {
  content: "";
  position: absolute;
  top: 0.72em;
  left: 0;
  width: 0.58rem;
  height: 0.58rem;
  border-radius: 50%;
  background: var(--accent);
}

.number-list {
  counter-reset: steps;
  list-style: none;
  padding-left: 0;
}

.number-list li {
  counter-increment: steps;
  position: relative;
  padding-left: 2.55rem;
}

.number-list li::before {
  content: counter(steps);
  position: absolute;
  top: 0.05rem;
  left: 0;
  display: grid;
  place-items: center;
  width: 1.8rem;
  height: 1.8rem;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 0.9rem;
  font-weight: 800;
}

.comparison-table {
  display: grid;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.comparison-table [role="row"] {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.comparison-table [role="row"]:first-child {
  border-top: 0;
}

.comparison-table span {
  padding: 0.85rem;
}

.comparison-table span:first-child {
  font-weight: 800;
  color: var(--ink);
}

.comparison-table__head {
  background: var(--ink);
  color: #fff;
  font-weight: 800;
}

.comparison-table__head span:first-child {
  color: #fff;
}

.pros-cons {
  display: grid;
  gap: 1rem;
}

.pros-cons section {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem;
  background: #fbfcfc;
}

.faq details {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfcfc;
}

.faq details + details {
  margin-top: 0.75rem;
}

.faq summary {
  cursor: pointer;
  padding: 1rem;
  font-weight: 800;
}

.faq details p {
  padding: 0 1rem 1rem;
  margin-bottom: 0;
  color: var(--muted);
}

.recommendation {
  border-color: rgba(17, 100, 102, 0.32);
  background: linear-gradient(180deg, #ffffff 0%, #eef8f7 100%);
}

.footer {
  border-top: 1px solid var(--line);
  background: var(--ink);
  color: rgba(255, 255, 255, 0.78);
}

.footer__inner {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  padding-block: 1.5rem;
}

.footer__copy {
  display: grid;
  gap: 0.55rem;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: #fff;
  font-weight: 800;
  text-decoration: none;
}

.footer-brand img {
  width: 34px;
  height: 36px;
  object-fit: contain;
  border-radius: 6px;
}

.footer p {
  margin-bottom: 0;
}

.footer a {
  color: #fff;
}

@media (min-width: 680px) {
  .nav {
    display: flex;
  }

  .feature-grid,
  .pros-cons {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .comparison-table [role="row"] {
    grid-template-columns: minmax(170px, 0.6fr) 1fr;
  }

  .comparison-table span + span {
    border-left: 1px solid var(--line);
  }

  .footer__inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

@media (min-width: 980px) {
  .hero {
    min-height: 680px;
  }

  .article {
    grid-template-columns: 260px minmax(0, 1fr);
    align-items: start;
  }

  .toc {
    position: sticky;
    top: 88px;
  }

  .section-block--split {
    grid-template-columns: minmax(0, 1fr) minmax(320px, 0.78fr);
    align-items: center;
  }
}

@media (max-width: 430px) {
  body {
    font-size: 16px;
  }

  .topbar__inner {
    min-height: 58px;
  }

  .hero {
    min-height: 560px;
  }

  .hero__shade {
    background: linear-gradient(0deg, rgba(12, 16, 15, 0.88), rgba(12, 16, 15, 0.38));
  }

  .button {
    width: 100%;
  }
}