:root {
  color-scheme: light;
  --bg: #f5f3ff;
  --surface: rgba(255, 255, 255, 0.86);
  --surface-strong: #ffffff;
  --ink: #151a3a;
  --muted: #525a7d;
  --primary: #313277;
  --primary-strong: #24255f;
  --violet: #8b5cf6;
  --sky: #38bdf8;
  --mint: #2fbf83;
  --sun: #f5b91f;
  --coral: #ee526d;
  --line: rgba(49, 50, 119, 0.18);
  --shadow: 0 24px 70px rgba(49, 50, 119, 0.13);
  --radius-sm: 14px;
  --radius-md: 22px;
  --radius-lg: 34px;
  --content: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 8%, rgba(139, 92, 246, 0.18), transparent 30rem),
    radial-gradient(circle at 92% 18%, rgba(56, 189, 248, 0.18), transparent 28rem),
    linear-gradient(180deg, #fbfaff 0%, var(--bg) 46%, #eef8ff 100%);
  font-family: Inter, ui-rounded, "SF Pro Rounded", "Segoe UI", system-ui, -apple-system, sans-serif;
  font-size: 17px;
  line-height: 1.72;
  text-rendering: optimizeLegibility;
}

a {
  color: var(--primary);
  text-decoration-thickness: 0.09em;
  text-underline-offset: 0.2em;
}

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

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  border-radius: 8px;
  outline: 3px solid var(--sky);
  outline-offset: 4px;
}

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

h1,
h2,
h3 {
  margin: 0;
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.12;
}

h1 {
  max-width: 900px;
  font-size: clamp(2.65rem, 8vw, 5.8rem);
}

h2 {
  font-size: clamp(2rem, 5vw, 3.35rem);
}

h3 {
  font-size: clamp(1.2rem, 2.4vw, 1.55rem);
}

p {
  margin: 0;
}

ul,
ol {
  margin: 0;
  padding-inline-start: 1.35rem;
}

li + li {
  margin-top: 0.6rem;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 10px 16px;
  border-radius: 999px;
  color: #ffffff;
  background: var(--primary);
  transform: translateY(-160%);
  transition: transform 160ms ease;
}

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

.site-header {
  position: sticky;
  z-index: 50;
  top: 0;
  border-bottom: 1px solid var(--line);
  background: rgba(249, 248, 255, 0.84);
  backdrop-filter: blur(18px);
}

.nav-shell,
.section-shell,
.hero-shell,
.article-shell,
.footer-shell {
  width: min(calc(100% - 32px), var(--content));
  margin-inline: auto;
}

.nav-shell {
  display: flex;
  min-height: 74px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--ink);
  font-weight: 850;
  letter-spacing: -0.025em;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 14px;
  background: linear-gradient(145deg, var(--sun), #ff8f5b);
  box-shadow: 0 10px 28px rgba(245, 185, 31, 0.28);
  font-size: 1.45rem;
}

.nav-actions,
.nav-links,
.language-switch {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links a {
  padding: 8px 10px;
  border-radius: 12px;
  color: var(--muted);
  font-size: 0.93rem;
  font-weight: 720;
  text-decoration: none;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--primary);
  background: rgba(49, 50, 119, 0.08);
}

.language-switch {
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
}

.language-switch button,
.menu-toggle {
  min-width: 42px;
  min-height: 38px;
  border: 0;
  border-radius: 999px;
  color: var(--muted);
  background: transparent;
  cursor: pointer;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 800;
}

.language-switch button[aria-pressed="true"] {
  color: #ffffff;
  background: var(--primary);
}

.menu-toggle {
  display: none;
  border: 1px solid var(--line);
  border-radius: 13px;
  font-size: 1.2rem;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 11px 19px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 800;
  text-decoration: none;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: #ffffff;
  background: linear-gradient(135deg, var(--primary), var(--violet));
  box-shadow: 0 16px 34px rgba(49, 50, 119, 0.24);
}

.button-primary:hover {
  color: #ffffff;
  box-shadow: 0 20px 40px rgba(49, 50, 119, 0.3);
}

.button-secondary {
  border-color: var(--line);
  color: var(--ink);
  background: rgba(255, 255, 255, 0.8);
}

.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(76px, 11vw, 142px) 0 86px;
}

.hero::before,
.hero::after {
  position: absolute;
  z-index: -1;
  width: 270px;
  height: 270px;
  border-radius: 44% 56% 66% 34% / 50% 38% 62% 50%;
  content: "";
  filter: blur(2px);
  opacity: 0.42;
}

.hero::before {
  top: 50px;
  right: -110px;
  background: linear-gradient(145deg, var(--sky), var(--violet));
  transform: rotate(18deg);
}

.hero::after {
  bottom: -110px;
  left: -120px;
  background: linear-gradient(145deg, var(--sun), var(--coral));
  transform: rotate(-22deg);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 22px;
  padding: 7px 12px;
  border: 1px solid rgba(49, 50, 119, 0.16);
  border-radius: 999px;
  color: var(--primary);
  background: rgba(255, 255, 255, 0.68);
  font-size: 0.83rem;
  font-weight: 850;
  letter-spacing: 0.055em;
  text-transform: uppercase;
}

.eyebrow-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 0 5px rgba(47, 191, 131, 0.14);
}

.hero h1 span,
.gradient-text {
  color: transparent;
  background: linear-gradient(105deg, var(--primary) 5%, var(--violet) 58%, #167ba4 100%);
  background-clip: text;
  -webkit-background-clip: text;
}

.hero-copy {
  max-width: 760px;
  margin-top: 28px;
  color: var(--muted);
  font-size: clamp(1.08rem, 2.2vw, 1.32rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.trust-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 48px;
}

.trust-item {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.64);
  color: var(--muted);
  font-size: 0.92rem;
}

.trust-item strong {
  display: block;
  margin-bottom: 2px;
  color: var(--ink);
}

.section {
  padding: clamp(62px, 9vw, 108px) 0;
}

.section-tinted {
  border-block: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.52);
}

.section-heading {
  display: grid;
  max-width: 780px;
  gap: 18px;
  margin-bottom: 40px;
}

.section-heading p {
  color: var(--muted);
  font-size: 1.08rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.card,
.step-card,
.guide-card,
.callout,
.article-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.card,
.step-card {
  padding: 28px;
}

.card-icon,
.step-number {
  display: grid;
  width: 52px;
  height: 52px;
  margin-bottom: 22px;
  place-items: center;
  border-radius: 17px;
  font-size: 1.35rem;
  font-weight: 900;
}

.card:nth-child(1) .card-icon {
  color: #653ea8;
  background: rgba(139, 92, 246, 0.15);
}

.card:nth-child(2) .card-icon {
  color: #1579a5;
  background: rgba(56, 189, 248, 0.16);
}

.card:nth-child(3) .card-icon {
  color: #167a55;
  background: rgba(47, 191, 131, 0.16);
}

.card p,
.step-card p,
.guide-card p {
  margin-top: 12px;
  color: var(--muted);
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.step-card {
  box-shadow: none;
}

.step-number {
  width: 44px;
  height: 44px;
  margin-bottom: 18px;
  color: #ffffff;
  background: var(--primary);
  font-size: 1rem;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(300px, 0.88fr);
  align-items: start;
  gap: 28px;
}

.prose-stack {
  display: grid;
  gap: 20px;
  color: var(--muted);
}

.check-list {
  display: grid;
  gap: 12px;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding: 14px 16px 14px 48px;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: rgba(255, 255, 255, 0.64);
  color: var(--ink);
  font-weight: 680;
}

.check-list li::before {
  position: absolute;
  top: 13px;
  left: 15px;
  display: grid;
  width: 24px;
  height: 24px;
  place-items: center;
  border-radius: 50%;
  color: #ffffff;
  background: var(--mint);
  content: "✓";
  font-size: 0.8rem;
  font-weight: 900;
}

.guide-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.guide-card {
  display: flex;
  min-height: 100%;
  flex-direction: column;
  overflow: hidden;
  text-decoration: none;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.guide-card:hover {
  color: var(--ink);
  box-shadow: 0 30px 78px rgba(49, 50, 119, 0.2);
  transform: translateY(-5px);
}

.guide-visual {
  display: grid;
  min-height: 176px;
  place-items: center;
  color: #ffffff;
  font-size: 3.3rem;
}

.guide-card:nth-child(1) .guide-visual {
  background: linear-gradient(145deg, #ffbd36, #f26b68);
}

.guide-card:nth-child(2) .guide-visual {
  background: linear-gradient(145deg, #38bdf8, #6d55d8);
}

.guide-card:nth-child(3) .guide-visual {
  background: linear-gradient(145deg, #39ca8b, #2381aa);
}

.guide-content {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 26px;
}

.guide-content .text-link {
  margin-top: auto;
  padding-top: 22px;
  color: var(--primary);
  font-weight: 850;
}

.callout {
  padding: clamp(26px, 5vw, 44px);
  background:
    linear-gradient(135deg, rgba(49, 50, 119, 0.97), rgba(107, 72, 190, 0.95)),
    var(--primary);
  color: #ffffff;
}

.callout p {
  max-width: 780px;
  margin-top: 18px;
  color: rgba(255, 255, 255, 0.82);
}

.callout .button {
  margin-top: 26px;
  color: var(--primary);
  background: #ffffff;
}

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-list details {
  border: 1px solid var(--line);
  border-radius: 17px;
  background: rgba(255, 255, 255, 0.7);
}

.faq-list summary {
  padding: 19px 22px;
  cursor: pointer;
  font-weight: 800;
}

.faq-list details p {
  padding: 0 22px 22px;
  color: var(--muted);
}

.ad-shell {
  width: min(calc(100% - 32px), 970px);
  min-height: 116px;
  margin: 24px auto;
  padding: 10px;
  border-block: 1px solid rgba(49, 50, 119, 0.1);
  text-align: center;
}

.ad-label {
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.article-hero {
  padding: clamp(62px, 10vw, 116px) 0 46px;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
  color: var(--muted);
  font-size: 0.88rem;
}

.breadcrumbs a {
  color: var(--muted);
}

.article-hero h1 {
  max-width: 980px;
  font-size: clamp(2.55rem, 7vw, 5rem);
}

.article-intro {
  max-width: 790px;
  margin-top: 24px;
  color: var(--muted);
  font-size: clamp(1.08rem, 2vw, 1.28rem);
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 9px 18px;
  margin-top: 26px;
  color: var(--muted);
  font-size: 0.86rem;
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 270px;
  align-items: start;
  gap: 32px;
  padding-bottom: 96px;
}

.article-card {
  padding: clamp(24px, 5vw, 54px);
}

.article-body {
  display: grid;
  gap: 24px;
}

.article-body h2 {
  margin-top: 30px;
  font-size: clamp(1.7rem, 4vw, 2.45rem);
}

.article-body h3 {
  margin-top: 14px;
}

.article-body p,
.article-body li {
  color: #394064;
}

.article-body blockquote {
  margin: 8px 0;
  padding: 22px 24px;
  border-inline-start: 5px solid var(--sun);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: rgba(245, 185, 31, 0.11);
  color: var(--ink);
  font-size: 1.08rem;
  font-weight: 720;
}

.article-body .practice {
  padding: 24px;
  border: 1px solid rgba(47, 191, 131, 0.28);
  border-radius: var(--radius-sm);
  background: rgba(47, 191, 131, 0.09);
}

.article-body .practice h3 {
  margin: 0 0 10px;
  color: #176b4d;
}

.article-body .ad-shell {
  width: 100%;
  margin: 18px 0;
}

.article-nav {
  position: sticky;
  top: 96px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.7);
}

.article-nav strong {
  display: block;
  margin-bottom: 12px;
}

.article-nav ol {
  display: grid;
  gap: 10px;
  padding-inline-start: 1.15rem;
  font-size: 0.88rem;
}

.article-nav a {
  color: var(--muted);
}

.site-footer {
  border-top: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.6);
}

.footer-shell {
  display: grid;
  grid-template-columns: 1.2fr repeat(2, minmax(150px, 0.6fr));
  gap: 36px;
  padding-block: 52px 30px;
}

.footer-brand p {
  max-width: 490px;
  margin-top: 14px;
  color: var(--muted);
  font-size: 0.92rem;
}

.footer-links {
  display: grid;
  align-content: start;
  gap: 9px;
}

.footer-links strong {
  margin-bottom: 3px;
}

.footer-links a {
  color: var(--muted);
  font-size: 0.91rem;
}

.footer-bottom {
  grid-column: 1 / -1;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.82rem;
}

.not-found {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 32px;
}

.not-found-card {
  max-width: 700px;
  padding: clamp(32px, 8vw, 72px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow);
  text-align: center;
}

.not-found-code {
  color: var(--violet);
  font-size: clamp(4rem, 15vw, 8rem);
  font-weight: 900;
  letter-spacing: -0.08em;
  line-height: 0.9;
}

.not-found-card h1 {
  margin-top: 22px;
  font-size: clamp(2rem, 6vw, 3.2rem);
}

.not-found-card p {
  margin: 18px 0 28px;
  color: var(--muted);
}

[hidden] {
  display: none !important;
}

@media (max-width: 960px) {
  .card-grid,
  .guide-grid {
    grid-template-columns: 1fr 1fr;
  }

  .card-grid > :last-child,
  .guide-grid > :last-child {
    grid-column: 1 / -1;
  }

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

  .article-layout {
    grid-template-columns: 1fr;
  }

  .article-nav {
    position: static;
    order: -1;
  }
}

@media (max-width: 780px) {
  .menu-toggle {
    display: inline-grid;
    place-items: center;
  }

  .nav-links {
    position: absolute;
    top: 68px;
    right: 16px;
    left: 16px;
    display: none;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.97);
    box-shadow: var(--shadow);
  }

  .nav-links[data-open="true"] {
    display: grid;
  }

  .nav-links a {
    padding: 12px 14px;
  }

  .nav-actions > .button {
    display: none;
  }

  .trust-strip,
  .split,
  .footer-shell {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    grid-column: auto;
  }
}

@media (max-width: 620px) {
  body {
    font-size: 16px;
  }

  .nav-shell,
  .section-shell,
  .hero-shell,
  .article-shell,
  .footer-shell {
    width: min(calc(100% - 24px), var(--content));
  }

  .brand-link span:last-child {
    display: none;
  }

  .hero {
    padding-top: 58px;
  }

  .card-grid,
  .guide-grid,
  .steps {
    grid-template-columns: 1fr;
  }

  .card-grid > :last-child,
  .guide-grid > :last-child {
    grid-column: auto;
  }

  .hero-actions .button {
    width: 100%;
  }

  .article-card {
    border-radius: var(--radius-sm);
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #12141c;
    --surface: rgba(34, 36, 51, 0.88);
    --surface-strong: #242633;
    --ink: #f4f3ff;
    --muted: #c2c6de;
    --primary: #a99af5;
    --primary-strong: #c5bafb;
    --line: rgba(222, 219, 255, 0.18);
    --shadow: 0 24px 70px rgba(0, 0, 0, 0.34);
  }

  body {
    background:
      radial-gradient(circle at 12% 8%, rgba(139, 92, 246, 0.22), transparent 30rem),
      radial-gradient(circle at 92% 18%, rgba(56, 189, 248, 0.15), transparent 28rem),
      linear-gradient(180deg, #191a26 0%, var(--bg) 50%, #101820 100%);
  }

  .site-header {
    background: rgba(18, 20, 28, 0.86);
  }

  .language-switch,
  .button-secondary,
  .trust-item,
  .check-list li,
  .faq-list details,
  .article-nav,
  .section-tinted,
  .site-footer {
    background: rgba(35, 37, 52, 0.78);
  }

  .language-switch button[aria-pressed="true"] {
    color: #171823;
    background: #bcb2f6;
  }

  .button-primary {
    color: #ffffff;
    background: linear-gradient(135deg, #5a4abf, #8b5cf6);
  }

  .nav-links a:hover,
  .nav-links a[aria-current="page"] {
    color: #ddd7ff;
    background: rgba(169, 154, 245, 0.14);
  }

  .article-body p,
  .article-body li {
    color: #d2d5e8;
  }

  .article-body .practice h3 {
    color: #7ce0b4;
  }

  .article-body blockquote {
    background: rgba(245, 185, 31, 0.12);
  }

  @media (max-width: 780px) {
    .nav-links {
      background: rgba(29, 31, 43, 0.98);
    }
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}