:root {
  --color-bg: #0b1114;
  --color-band: #10181b;
  --color-surface: #172024;
  --color-border: #2b373b;
  --color-text: #c7ced1;
  --color-muted: #a4aeb2;
  --color-heading: #f6f8f9;
  --color-accent: #21cab6;
  --color-accent-hover: #31ddc9;
  --color-on-accent: #0b1114;
  --color-accent-text: #3adfcc;
  --color-accent-soft: rgba(33, 202, 182, 0.14);
  --header-bg: var(--color-bg);
  --header-text: var(--color-heading);
  --header-border: var(--color-border);
  --footer-bg: var(--color-bg);
  --footer-text: var(--color-muted);
  --footer-border: var(--color-border);
  --font-heading: "Exo 2", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-body: "Exo 2", system-ui, -apple-system, "Segoe UI", sans-serif;
  --heading-weight: 700;
  --h3-weight: 700;
  --strong-weight: 600;
  --heading-tracking: -0.01em;
  --heading-case: none;
  --h1-scale: 1;
  --h2-scale: 1;
  --title-align: left;
}

html:root {
  color-scheme: dark;
  scroll-behavior: auto;
  scroll-padding-top: 96px;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-heading);
  font-weight: var(--heading-weight);
  letter-spacing: var(--heading-tracking);
  text-transform: var(--heading-case);
  color: var(--color-heading);
  line-height: 1.2;
  text-wrap: balance;
}

h1 {
  font-size: calc(clamp(1.75rem, 1.3rem + 1.6vw, 2.4rem) * var(--h1-scale));
  line-height: 1.1;
  margin: 0 0 1rem;
}

h2 {
  font-size: calc(clamp(1.55rem, 1.2rem + 1.4vw, 2.2rem) * var(--h2-scale));
  margin: 0;
}

h3 {
  font-size: clamp(1.15rem, 1.05rem + 0.45vw, 1.35rem);
  font-weight: var(--h3-weight);
  margin: 1.75rem 0 0.6rem;
}

h4 {
  font-size: 1.05rem;
  font-weight: var(--h3-weight);
  margin: 1.4rem 0 0.5rem;
}

p {
  margin: 0 0 1.1rem;
}

p:last-child {
  margin-bottom: 0;
}

ul,
ol {
  margin: 0 0 1.1rem;
  padding-left: 1.3rem;
}

li {
  margin-bottom: 0.4rem;
}

li > p {
  margin-bottom: 0.3rem;
}

a {
  color: var(--color-accent-text);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
  transition: color 0.15s;
}

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

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

strong {
  font-weight: var(--strong-weight);
  color: var(--color-accent-text);
}

.title-band {
  padding: clamp(2.5rem, 1.8rem + 3vw, 4.25rem) 0;
  background: radial-gradient(70% 140% at 50% 0%, var(--color-accent-soft), transparent 72%), var(--color-band);
  border-bottom: 1px solid var(--color-border);
  text-align: var(--title-align);
}

.summary-text {
  margin-bottom: 0;
  font-size: clamp(1.075rem, 1rem + 0.35vw, 1.25rem);
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-text);
}

.block-band {
  padding: clamp(2.75rem, 2rem + 2.6vw, 4.5rem) 0;
  background: var(--color-bg);
}

.block-band::after {
  content: "";
  display: block;
  clear: both;
}

.section-tint {
  background: var(--color-band);
  box-shadow: 0 0 0 100vmax var(--color-band);
  clip-path: inset(0 -100vmax);
}

.block-band:not(.section-tint) + .block-band:not(.section-tint) {
  padding-top: 0;
}

.heading-wrap {
  margin-bottom: 1.5rem;
  text-align: var(--title-align);
}

.heading-wrap::before,
.heading-wrap::after {
  content: "";
  display: block;
  width: 36px;
  height: 2px;
  background: var(--color-accent);
}

.heading-wrap::before {
  margin-bottom: 0.9rem;
}

.heading-wrap::after {
  margin-top: 0.9rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--header-bg);
  border-bottom: 1px solid var(--header-border);
}

.site-header-inner {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  column-gap: 2rem;
  row-gap: 0.3rem;
  min-height: 72px;
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
}

.brand-logo {
  display: block;
  width: auto;
  height: 38px;
}

.primary-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.6rem;
}

.primary-nav .nav-link {
  padding: 0.35rem 0;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--header-text);
  text-decoration: none;
  transition: none;
}

.primary-nav .nav-link:hover,
.primary-nav .nav-link:focus {
  color: var(--header-text);
  text-decoration: underline;
  text-decoration-color: var(--color-accent);
  text-decoration-thickness: 2px;
  text-underline-offset: 0.45em;
}

.primary-nav .nav-link:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  box-shadow: none;
}

.nav-toggle-input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.nav-toggle {
  display: none;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--header-text);
  border-radius: 2px;
}

.nav-toggle-input:focus-visible ~ .nav-toggle {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.ref-table {
  clear: both;
  width: 100%;
  margin: 1rem 0 1.5rem;
  border-collapse: separate;
  border-spacing: 0 6px;
  font-variant-numeric: tabular-nums;
}

.ref-table th,
.ref-table td {
  padding: 0.8rem 1rem;
  text-align: left;
  vertical-align: top;
}

.ref-table thead th {
  padding-bottom: 0.35rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.ref-table tbody td {
  background: var(--color-surface);
}

.ref-table tbody td:first-child {
  border-radius: 12px 0 0 12px;
  font-weight: 600;
  color: var(--color-heading);
}

.ref-table tbody td:last-child {
  border-radius: 0 12px 12px 0;
}

.compare-block {
  clear: both;
  margin: 1.5rem 0;
  padding: 1.5rem 1.5rem 1.25rem;
  background: var(--color-surface);
  border: 1px solid transparent;
  border-radius: 20px;
}

.compare-block .row {
  row-gap: 1.25rem;
}

.compare-block h4 {
  margin: 0 0 0.6rem;
}

.compare-block ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.compare-block li {
  position: relative;
  margin-bottom: 0.45rem;
  padding-left: 1.6rem;
}

.compare-block li::before {
  content: "+";
  position: absolute;
  left: 0;
  width: 1.1rem;
  font-weight: 700;
  text-align: center;
  color: var(--color-accent-text);
}

.compare-block .col-md-6:last-child li::before {
  content: "\2212";
  color: var(--color-muted);
}

.step-list {
  clear: both;
  margin: 1.25rem 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

.step-list li {
  position: relative;
  min-height: 2.25rem;
  margin-bottom: 0.9rem;
  padding: 0.25rem 0 0 3.1rem;
  counter-increment: step;
}

.step-list li::before {
  content: counter(step);
  position: absolute;
  top: 0;
  left: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  background: var(--color-accent);
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1;
  color: var(--color-on-accent);
}

.card-list {
  clear: both;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin: 1.25rem 0;
  padding: 0;
  list-style: none;
}

.card-list li {
  margin-bottom: 0;
  padding: 1.1rem 1.2rem;
  background: var(--color-surface);
  border: 1px solid transparent;
  border-radius: 20px;
}

.card-list li > strong:first-child {
  display: block;
  margin-bottom: 0.25rem;
  font-family: var(--font-heading);
  color: var(--color-heading);
}

.icon-list {
  padding: 0;
  list-style: none;
}

.icon-list li {
  position: relative;
  margin-bottom: 0.55rem;
  padding-left: 1.5rem;
}

.icon-list li::before {
  content: "";
  position: absolute;
  top: 0.68em;
  left: 0.15rem;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--color-accent-text);
}

.content-col .row {
  clear: both;
}

.col-item {
  padding: 1.5rem;
  background: var(--color-surface);
  border: 1px solid transparent;
  border-radius: 20px;
}

.col-item h3 {
  margin-top: 0;
}

.notice-block {
  clear: both;
  margin: 1.5rem 0;
  padding: 1rem 1.25rem;
  font-size: 0.975rem;
  background: var(--color-accent-soft);
  border: 1px solid var(--color-border);
  border-radius: 20px;
}

.notice-block::before {
  content: "Note";
  display: block;
  margin-bottom: 0.3rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent-text);
}

.focus-block {
  clear: both;
  margin: 1.75rem 0;
  padding: 1.35rem 1.5rem;
  font-size: 1.075rem;
  line-height: 1.6;
  text-align: center;
  color: var(--color-heading);
  background: var(--color-surface);
  border: 1px solid transparent;
  border-radius: 20px;
}

.how-it-works {
  clear: both;
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem 1.75rem;
  margin: 1.5rem 0;
}

.step-item {
  display: flex;
  flex: 1 1 0;
  align-items: center;
  gap: 0.65rem;
  min-width: 0;
}

.process-num {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  width: 2em;
  height: 2em;
  border-radius: 50%;
  background: var(--color-accent);
  font-family: var(--font-heading);
  font-weight: var(--heading-weight);
  line-height: 1;
  color: var(--color-on-accent);
}

.process-label {
  font-size: 0.9em;
  line-height: 1.35;
  color: var(--color-heading);
}

.site-btn {
  display: inline-block;
  padding: 0.9rem 2.1rem;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  color: var(--color-on-accent);
  background: var(--color-accent);
  border-radius: 999px;
  transition: background-color 0.15s;
}

.site-btn:hover {
  color: var(--color-on-accent);
  background: var(--color-accent-hover);
}

.qa-list {
  clear: both;
  margin-top: 1.5rem;
}

.question-item {
  margin-bottom: 0.75rem;
  padding: 0 1.4rem;
  background: var(--color-surface);
  border: 1px solid transparent;
  border-radius: 16px;
}

.question-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.05rem 0;
  list-style: none;
  cursor: pointer;
}

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

.question-item summary::marker {
  content: "";
}

.question-item summary::after {
  content: "+";
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  width: 1.6rem;
  height: 1.6rem;
  border-radius: 50%;
  background: var(--color-accent);
  font-size: 1.05rem;
  line-height: 1;
  color: var(--color-on-accent);
}

.question-item[open] summary::after {
  content: "\2212";
}

.question-item summary h3 {
  margin: 0;
  font-size: 1.075rem;
  letter-spacing: 0;
  text-transform: none;
}

.faq-answer {
  padding: 0 0 1.15rem;
}

.pic-left,
.pic-right {
  /* width: 44%; */
  max-width: 400px;
  height: auto;
  border-radius: 20px;
}

.pic-right {
  float: right;
  margin: 0.3rem 0 1rem 1.75rem;
}

.pic-left {
  float: left;
  margin: 0.3rem 1.75rem 1rem 0;
}

.pic-tall {
  max-width: 350px;
}

.pic-center {
  clear: both;
  display: block;
  max-width: 100%;
  height: auto;
  margin: 1.75rem auto 0;
  border-radius: 20px;
}

.site-aside {
  padding-top: 0;
  padding-bottom: clamp(2.75rem, 2rem + 2.6vw, 4.5rem);
}

.aside-inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 1.25rem;
}

.aside-box {
  padding: 1.3rem 1.25rem 1.4rem;
  background: var(--color-surface);
  border: 1px solid transparent;
  border-radius: 20px;
}

.aside-title {
  margin: 0 0 0.8rem;
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: var(--h3-weight);
  letter-spacing: var(--heading-tracking);
  line-height: 1.2;
  color: var(--color-heading);
}

.aside-links {
  margin: 0;
  padding: 0;
  list-style: none;
}

.aside-links li {
  margin-bottom: 0;
  border-top: 1px solid var(--color-border);
}

.aside-links li:first-child {
  border-top: 0;
}

.aside-links a {
  display: block;
  padding: 0.55rem 0;
  font-size: 0.95rem;
  line-height: 1.4;
  color: var(--color-text);
  text-decoration: none;
}

.aside-links li:first-child a {
  padding-top: 0;
}

.aside-links li:last-child a {
  padding-bottom: 0;
}

.aside-links a:hover,
.aside-links a:focus {
  color: var(--color-heading);
  text-decoration: underline;
  text-decoration-color: var(--color-accent);
  text-decoration-thickness: 2px;
  text-underline-offset: 0.3em;
}

.aside-text {
  margin-bottom: 0.9rem;
  font-size: 0.95rem;
  line-height: 1.55;
}

.aside-field {
  display: flex;
  gap: 0.5rem;
}

.aside-input {
  flex: 1 1 auto;
  width: 100%;
  min-width: 0;
  padding: 0.7rem 1rem;
  font-family: inherit;
  font-size: 0.95rem;
  line-height: 1.2;
  color: var(--color-heading);
  caret-color: var(--color-accent);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 999px;
}

.aside-input::placeholder {
  color: var(--color-muted);
  opacity: 1;
}

.aside-btn {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1rem;
  font-size: 0.95rem;
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
}

.site-footer {
  font-size: 0.925rem;
  color: var(--footer-text);
  background: var(--footer-bg);
  border-top: 1px solid var(--footer-border);
}

.site-footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 2rem;
  padding-top: 1.75rem;
  padding-bottom: 1.75rem;
}

.site-footer a {
  color: var(--footer-text);
  text-decoration: underline;
}

.site-footer a:hover {
  color: var(--color-heading);
}

@media (min-width: 992px) {
  body {
    font-size: 1.0625rem;
  }

  .site-aside {
    padding-top: clamp(2.75rem, 2rem + 2.6vw, 4.5rem);
  }
}

@media (min-width: 992px) and (min-height: 820px) {
  .aside-inner {
    position: sticky;
    top: 96px;
  }
}

@media (min-width: 1400px) {
  .container {
    max-width: 1200px;
  }
}

@media (min-width: 769px) and (max-width: 1199px) {
  .primary-nav {
    gap: 0.25rem 1.1rem;
  }

  .primary-nav .nav-link {
    font-size: 0.9rem;
  }
}

@media (min-width: 769px) and (max-width: 991px) {
  .aside-inner {
    grid-template-columns: 1fr 1fr;
  }

  .aside-box:first-child {
    grid-row: span 2;
  }
}

@media (max-width: 991px) {
  .card-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .site-header-inner {
    column-gap: 1rem;
  }

  .brand-logo {
    height: 36px;
  }

  .nav-toggle {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    border-radius: 10px;
    cursor: pointer;
  }

  .primary-nav {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
    padding-bottom: 0.75rem;
  }

  .nav-toggle-input:checked ~ .primary-nav {
    display: flex;
  }

  .primary-nav .nav-link {
    display: block;
    padding: 0.75rem 0;
    font-size: 1rem;
    border-top: 1px solid var(--header-border);
  }

  .ref-table,
  .ref-table tbody,
  .ref-table tr,
  .ref-table td {
    display: block;
    width: 100%;
  }

  .ref-table thead {
    display: none;
  }

  .ref-table tr {
    margin-bottom: 0.9rem;
    overflow: hidden;
    background: var(--color-surface);
    border: 1px solid transparent;
    border-radius: 20px;
  }

  .ref-table tbody td {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.6rem 0.9rem;
    text-align: right;
    background: none;
    border-top: 1px solid var(--color-border);
    border-radius: 0;
  }

  .ref-table tbody td:first-child,
  .ref-table tbody td:last-child {
    border-radius: 0;
  }

  .ref-table tbody td:first-child {
    border-top: 0;
  }

  .ref-table tbody td::before {
    content: attr(data-label);
    font-weight: 600;
    text-align: left;
    color: var(--color-heading);
  }

  .card-list {
    grid-template-columns: 1fr;
  }

  .pic-left,
  .pic-right {
    float: none;
    display: block;
    width: 100%;
    margin: 0.25rem auto 1.1rem;
  }

  .site-footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .how-it-works {
    flex-direction: column;
  }

  .step-item {
    flex: 0 0 auto;
  }
}