:root {
  --paper: #ffffff;
  --ink: #101419;
  --muted: #5f6f86;
  --line: rgba(71, 91, 112, 0.14);
  --accent: #147a64;
  --accent-strong: #0f6d59;
  --accent-soft: rgba(53, 189, 152, 0.1);
  --forest: #111720;
  --surface: rgba(255, 255, 255, 0.9);
  --surface-strong: rgba(255, 255, 255, 0.96);
  --surface-soft: rgba(247, 250, 252, 0.9);
  --radius: 8px;
  --radius-sm: 6px;
  --shadow: 0 18px 48px rgba(73, 94, 116, 0.1);
  --shadow-soft: 0 10px 26px rgba(61, 80, 95, 0.07);
  --max: 1240px;
}

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

html {
  scroll-behavior: smooth;
}

:target {
  scroll-margin-top: 108px;
}

body {
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  font-size: 15px;
  font-family: "Avenir Next", "Segoe UI", "Helvetica Neue", sans-serif;
  line-height: 1.58;
  background:
    radial-gradient(circle at 18% 8%, rgba(255, 255, 255, 0.95), transparent 18%),
    radial-gradient(circle at 72% 0%, rgba(255, 255, 255, 0.82), transparent 24%),
    linear-gradient(180deg, #f7f9fd 0%, #edf4fa 48%, #e9f2f8 100%);
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

a {
  color: inherit;
  text-decoration: none;
}

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

.skip-link {
  position: absolute;
  left: 16px;
  top: -48px;
  z-index: 50;
  padding: 10px 14px;
  background: var(--forest);
  color: #fff;
  font-weight: 700;
}

.skip-link:focus {
  top: 16px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-frame {
  width: min(100%, calc(var(--max) + 40px));
  margin: 0 auto;
  padding: 14px 18px 32px;
}

.topbar,
.content-block,
.footer {
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--surface-strong), var(--surface));
  box-shadow: var(--shadow);
}

.topbar {
  position: sticky;
  top: 14px;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  min-height: 68px;
  padding: 12px 16px;
  margin-bottom: 12px;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.wordmark-mark {
  display: inline-flex;
  align-items: baseline;
  gap: 3px;
  min-width: 94px;
  color: #11161d;
  font-size: 1.62rem;
  font-weight: 900;
  line-height: 1;
  letter-spacing: 0.01em;
}

.wordmark-mark i {
  width: 0.32em;
  height: 0.32em;
  border-radius: 50%;
  background: #35bd98;
}

.wordmark strong,
.footer strong {
  display: block;
  font-size: 0.96rem;
}

.wordmark small {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
}

.main-nav,
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.main-nav a,
.footer-links a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding-inline: 8px;
  color: var(--forest);
  font-weight: 600;
}

.language-switcher {
  position: relative;
  flex: 0 0 auto;
}

.language-switcher summary {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface-strong);
  color: var(--forest);
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 700;
  list-style: none;
}

.language-switcher summary::-webkit-details-marker {
  display: none;
}

.language-switcher summary::after {
  content: "▾";
  margin-left: 8px;
  color: var(--accent);
}

.language-switcher[open] summary {
  border-color: rgba(20, 122, 100, 0.42);
  box-shadow: var(--shadow-soft);
}

.language-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  z-index: 40;
  display: grid;
  grid-template-columns: repeat(4, minmax(112px, 1fr));
  gap: 4px;
  width: min(560px, 82vw);
  max-height: min(65vh, 480px);
  padding: 10px;
  overflow-y: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 20px 50px rgba(16, 20, 25, 0.18);
}

.language-menu a {
  display: flex;
  align-items: center;
  min-height: 40px;
  padding: 7px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.84rem;
  font-weight: 650;
}

.language-menu a:hover,
.language-menu a:focus-visible,
.language-menu a[aria-current="page"] {
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.text-link {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  color: var(--forest);
  font-weight: 600;
}

.chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
  line-height: 1.2;
  overflow-wrap: anywhere;
  text-align: center;
  box-shadow: var(--shadow-soft);
  transition: transform 180ms ease, background-color 180ms ease, border-color 180ms ease, color 180ms ease, box-shadow 180ms ease;
}

.chip:hover,
.chip:focus-visible,
.category-card:hover,
.category-card:focus-visible,
.text-link:hover,
.text-link:focus-visible {
  transform: translateY(-1px);
}

.chip-dark {
  background: var(--forest);
  color: #fff;
}

.chip-accent {
  background: var(--accent);
  color: #fff;
}

.chip-dark:hover,
.chip-dark:focus-visible,
.chip-accent:hover,
.chip-accent:focus-visible {
  box-shadow: 0 14px 32px rgba(20, 122, 100, 0.18);
}

.stage {
  position: relative;
  display: grid;
  min-height: calc(100svh - 128px);
  overflow: hidden;
}

.acbuy-search-stage {
  min-height: min(600px, calc(100svh - 96px));
  padding: clamp(28px, 4vw, 54px);
  isolation: isolate;
  background:
    radial-gradient(circle at 48% 13%, rgba(255, 255, 255, 0.98) 0 8%, rgba(255, 255, 255, 0) 18%),
    radial-gradient(circle at 30% 20%, rgba(255, 255, 255, 0.88) 0 13%, rgba(255, 255, 255, 0) 25%),
    radial-gradient(circle at 66% 18%, rgba(255, 255, 255, 0.8) 0 15%, rgba(255, 255, 255, 0) 28%),
    linear-gradient(180deg, #f7f9fd 0%, #edf3fa 48%, #e8eff6 100%);
}

@supports (min-height: 100dvh) {
  .acbuy-search-stage {
    min-height: min(600px, calc(100dvh - 96px));
  }
}

.acbuy-hero-content {
  width: min(100%, 980px);
  align-self: center;
}

.acbuy-logo {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  min-height: 44px;
  margin-bottom: clamp(12px, 2vw, 20px);
  color: #12161c;
  font-size: clamp(1.75rem, 2.6vw, 2.35rem);
  font-weight: 900;
  line-height: 0.9;
  letter-spacing: 0.01em;
}

.acbuy-logo i {
  width: 0.27em;
  height: 0.27em;
  border-radius: 50%;
  background: #35bd98;
}

.acbuy-search-stage h1 {
  max-width: 17ch;
  min-height: 1.6em;
  color: #101419;
  font-family: "Avenir Next", "Segoe UI", "Helvetica Neue", sans-serif;
  font-size: clamp(1.9rem, 3vw, 2.65rem);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: 0;
}

.acbuy-search-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  width: min(930px, 100%);
  max-width: 100%;
  min-height: 68px;
  margin-top: clamp(16px, 3vw, 26px);
  padding: 6px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface-strong);
  box-shadow: var(--shadow);
}

.acbuy-search-form input {
  width: 100%;
  min-width: 0;
  height: 56px;
  padding: 0 clamp(18px, 3vw, 36px);
  border: 0;
  outline: 0;
  background: transparent;
  color: #17202b;
  font-size: clamp(0.9rem, 1.1vw, 1rem);
  font-weight: 500;
}

.acbuy-search-form input::placeholder {
  color: #8796b9;
}

.acbuy-search-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  min-width: 188px;
  min-height: 58px;
  height: auto;
  padding: 10px 18px;
  border: 0;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-size: clamp(0.92rem, 1.08vw, 1rem);
  font-weight: 760;
  line-height: 1.2;
  overflow-wrap: anywhere;
  text-align: center;
  box-shadow: 0 14px 32px rgba(20, 122, 100, 0.24);
  transition: transform 180ms ease, background-color 180ms ease, box-shadow 180ms ease;
}

.search-handoff-note {
  max-width: 72ch;
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 0.86rem;
}

.acbuy-search-button:hover,
.acbuy-search-button:focus-visible {
  transform: translateY(-1px);
  background: var(--accent-strong);
  box-shadow: 0 18px 36px rgba(20, 122, 100, 0.28);
}

.acbuy-search-button svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.acbuy-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  width: min(1180px, calc(100vw - 80px));
  margin: clamp(20px, 3vw, 32px) 0 0;
  padding: 0;
  list-style: none;
}

.acbuy-steps li {
  position: relative;
  min-width: 0;
}

.acbuy-steps li:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 30px;
  left: 68px;
  right: -8px;
  border-top: 2px dotted rgba(178, 185, 193, 0.54);
}

.acbuy-steps span {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  margin-bottom: 8px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 1.12rem;
  font-weight: 800;
}

.acbuy-steps strong {
  display: block;
  color: #147a64;
  font-size: 0.9rem;
  line-height: 1.2;
}

.acbuy-steps p {
  max-width: 25ch;
  margin: 6px 0 0;
  color: #24272d;
  font-size: 0.84rem;
  line-height: 1.45;
}

.kicker,
.guide-type,
.timeline span,
.category-card span {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 0.68rem;
  font-weight: 760;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.08;
}

h1,
h2 {
  font-family: "Avenir Next", "Segoe UI", "Helvetica Neue", sans-serif;
  font-weight: 850;
  letter-spacing: 0;
}

h1 {
  max-width: 17ch;
  font-size: clamp(1.9rem, 3.2vw, 2.75rem);
}

h2 {
  max-width: 22ch;
  font-size: clamp(1.34rem, 1.9vw, 1.78rem);
}

h3 {
  font-size: 0.95rem;
}

.section-head p,
.guide-card p,
.timeline p,
.help-columns p,
.faq-list p,
.footer p,
.category-card em {
  color: var(--muted);
}

.strip {
  display: flex;
  align-items: center;
  gap: 14px;
  overflow: hidden;
  padding: 12px 0 2px;
}

.strip p {
  margin: 0;
  white-space: nowrap;
  color: var(--forest);
  font-weight: 700;
}

.strip-track {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  color: var(--muted);
}

.content-block,
.footer {
  margin-top: 12px;
  padding: clamp(18px, 3vw, 28px);
}

.choice-block {
  background:
    radial-gradient(circle at 12% 0%, rgba(53, 189, 152, 0.08), transparent 26%),
    linear-gradient(180deg, var(--surface-strong), var(--surface-soft));
}

.section-head {
  display: grid;
  gap: 8px;
  margin-bottom: 16px;
}

.section-head-wide {
  grid-template-columns: minmax(0, 1fr) minmax(260px, 420px);
  align-items: end;
}

.section-head p {
  margin: 0;
}

.category-grid,
.choice-grid,
.guide-grid,
.timeline,
.help-columns,
.trust-grid {
  display: grid;
  gap: 12px;
}

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

.choice-card {
  display: grid;
  gap: 10px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background:
    linear-gradient(180deg, var(--surface-strong), var(--surface-soft));
}

.choice-index {
  margin: 0;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.choice-card p:not(.choice-index) {
  margin: 0;
  color: var(--muted);
}

.choice-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
  padding-top: 2px;
}

.complete-guide {
  background:
    linear-gradient(180deg, var(--surface-strong), var(--surface-soft));
}

.guide-article-grid,
.check-grid,
.do-dont-grid {
  display: grid;
  gap: 12px;
}

.guide-article-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.path-block {
  background:
    radial-gradient(circle at 84% 0%, rgba(53, 189, 152, 0.08), transparent 26%),
    linear-gradient(180deg, var(--surface-strong), var(--surface-soft));
}

.question-card,
.check-card,
.trust-card,
.article-note,
.quick-answer {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
}

.question-card,
.check-card,
.trust-card {
  padding: 16px;
}

.question-card h3 {
  font-size: 0.98rem;
}

.question-card p,
.check-card p,
.article-note p,
.quick-answer p {
  margin: 8px 0 0;
  color: var(--muted);
}

.quick-answer,
.article-note {
  margin: 16px 0;
  padding: 14px 16px;
}

.answer-label {
  display: inline-flex;
  margin: 0 0 4px;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.check-grid,
.do-dont-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.check-card strong {
  display: block;
  color: var(--forest);
}

.trust-block {
  background:
    radial-gradient(circle at 16% 0%, rgba(53, 189, 152, 0.08), transparent 26%),
    linear-gradient(180deg, var(--surface-strong), var(--surface-soft));
}

.trust-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.trust-card strong {
  display: block;
  color: var(--forest);
  font-size: 0.95rem;
}

.trust-card p {
  margin: 8px 0 0;
  color: var(--muted);
}

.decision-table {
  width: 100%;
  margin-top: 12px;
  border-collapse: collapse;
  overflow: hidden;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: var(--surface);
}

.decision-table th,
.decision-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.decision-table th {
  color: var(--forest);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.decision-table td {
  color: var(--muted);
}

.decision-table .text-link {
  margin-top: 0;
}

.decision-table tr:last-child th,
.decision-table tr:last-child td {
  border-bottom: 0;
}

.article-steps,
.content-list {
  padding-left: 20px;
}

.article-steps li + li,
.content-list li + li {
  margin-top: 8px;
}

.category-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.directory-block {
  position: relative;
  overflow: hidden;
  scroll-margin-top: 112px;
  padding: clamp(26px, 3.6vw, 42px) clamp(16px, 3vw, 30px) clamp(26px, 3.4vw, 38px);
  background:
    radial-gradient(circle at 20% 28%, rgba(255, 255, 255, 0.98), transparent 26%),
    radial-gradient(circle at 75% 18%, rgba(53, 189, 152, 0.08), transparent 28%),
    linear-gradient(180deg, var(--surface-strong) 0%, var(--surface-soft) 100%);
}

.directory-block::before,
.directory-block::after {
  content: "";
  position: absolute;
  pointer-events: none;
}

.directory-block::before {
  top: -40px;
  right: -140px;
  width: 560px;
  height: 220px;
  border-radius: 50%;
  background: linear-gradient(180deg, rgba(226, 233, 239, 0.38), rgba(255, 255, 255, 0));
  transform: rotate(9deg);
}

.directory-block::after {
  right: 8%;
  top: 118px;
  width: 270px;
  height: 80px;
  background: linear-gradient(135deg, rgba(18, 22, 28, 0.04), rgba(18, 22, 28, 0));
  clip-path: polygon(18% 100%, 100% 0, 82% 100%);
}

.directory-head {
  position: relative;
  z-index: 1;
  display: grid;
  justify-items: center;
  gap: clamp(6px, 0.8vw, 10px);
  margin: 0 auto clamp(16px, 2.4vw, 28px);
  text-align: center;
}

.directory-head p {
  margin: 0;
  color: var(--accent);
  font-size: clamp(0.62rem, 0.68vw, 0.72rem);
  font-weight: 760;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.directory-head h2 {
  max-width: none;
  color: #111720;
  font-family: "Avenir Next", "Segoe UI", "Helvetica Neue", sans-serif;
  font-size: clamp(1.5rem, 2.25vw, 2rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: 0;
}

.directory-head span {
  max-width: 36rem;
  color: #243140;
  font-size: clamp(0.82rem, 0.96vw, 0.92rem);
  font-weight: 600;
  line-height: 1.5;
}

.directory-grid {
  position: relative;
  z-index: 1;
  grid-template-columns: repeat(6, minmax(118px, 1fr));
  gap: clamp(10px, 1vw, 14px);
  width: min(1460px, 100%);
  margin: 0 auto;
}

.category-card {
  display: grid;
  gap: 6px;
  min-height: 132px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background:
    linear-gradient(180deg, var(--surface-strong), var(--surface-soft));
  transition: transform 180ms ease, border-color 180ms ease;
}

.directory-card {
  place-items: center;
  align-content: center;
  grid-template-rows: auto minmax(2em, auto);
  min-height: clamp(112px, 8.6vw, 136px);
  padding: clamp(10px, 1vw, 14px) 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, var(--surface-strong), var(--surface));
  box-shadow: var(--shadow-soft);
}

.directory-card:hover,
.directory-card:focus-visible {
  border-color: rgba(48, 185, 147, 0.42);
  transform: translateY(-3px);
  box-shadow: 0 18px 46px rgba(48, 185, 147, 0.13);
}

.category-card .directory-icon {
  display: grid;
  place-items: center;
  width: clamp(52px, 4.2vw, 62px);
  height: clamp(52px, 4.2vw, 62px);
  margin: 0 0 clamp(8px, 0.9vw, 12px);
  border-radius: var(--radius);
  background:
    radial-gradient(circle at 50% 30%, rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0) 52%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.76), rgba(53, 189, 152, 0.12));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.82), var(--shadow-soft);
  color: #111720;
  font-family: "Apple Color Emoji", "Segoe UI Emoji", "Noto Color Emoji", sans-serif;
  font-size: clamp(1.35rem, 1.7vw, 1.65rem);
  font-weight: 800;
  letter-spacing: 0;
  line-height: 1;
  text-shadow: none;
}

.category-card strong {
  font-size: 0.9rem;
}

.directory-card strong {
  color: #111720;
  font-size: clamp(0.78rem, 0.82vw, 0.88rem);
  font-weight: 760;
  line-height: 1.18;
  text-align: center;
}

.category-card em {
  font-style: normal;
}

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

.guide-card {
  padding: 16px 0 0;
  border-top: 1px solid var(--line);
}

.guide-card p {
  margin: 8px 0 0;
}

.text-link {
  margin-top: 12px;
}

.workflow-block {
  background:
    radial-gradient(circle at 10% 0%, rgba(53, 189, 152, 0.08), transparent 28%),
    linear-gradient(180deg, var(--surface-strong), var(--surface-soft));
}

.timeline {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.timeline article {
  padding-top: 6px;
  border-top: 1px solid var(--line);
}

.timeline p,
.help-columns p,
.faq-list p {
  margin: 8px 0 0;
}

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

.faq-list {
  display: grid;
  gap: 10px;
}

.faq-list details {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
}

.faq-list summary {
  display: flex;
  align-items: center;
  min-height: 44px;
  cursor: pointer;
  font-weight: 700;
}

.footer {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.footer-intro {
  max-width: 34ch;
}

.footer-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 22px;
}

.footer-label {
  margin: 0 0 8px;
  color: var(--forest);
  font-weight: 800;
}

.footer p {
  max-width: 58ch;
  margin: 6px 0 0;
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 240px) minmax(0, 1fr);
  gap: 12px;
}

.article-sidebar,
.article-main {
  min-width: 0;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--surface-strong), var(--surface));
  box-shadow: var(--shadow);
}

.article-sidebar {
  position: sticky;
  top: 92px;
  align-self: start;
  padding: 18px;
}

.article-sidebar p,
.article-sidebar li,
.article-main p,
.article-main li {
  color: var(--muted);
}

.article-sidebar ul {
  padding-left: 18px;
  margin: 10px 0 0;
}

.article-main {
  padding: clamp(20px, 3vw, 32px);
  overflow-wrap: break-word;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 14px 0 18px;
}

.article-meta span {
  min-width: 0;
  max-width: 100%;
  padding: 7px 11px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface-strong);
  font-size: 0.9rem;
  overflow-wrap: anywhere;
}

.evidence-panel {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin: 18px 0 24px;
  padding: 1px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--line);
  overflow: hidden;
}

.evidence-panel div {
  min-width: 0;
  padding: 14px;
  background: var(--surface-strong);
}

.evidence-panel dt {
  margin-bottom: 5px;
  color: var(--ink);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.evidence-panel dd {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.55;
}

.article-main section + section {
  margin-top: 22px;
}

.related-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 14px;
  margin-top: 14px;
}

.related-links a {
  padding-bottom: 6px;
  border-bottom: 1px solid var(--line);
}

.article-main h1 {
  max-width: 20ch;
  font-size: clamp(2.05rem, 3.4vw, 2.9rem);
}

.article-main h2 {
  max-width: 28ch;
  font-size: clamp(1.3rem, 1.8vw, 1.62rem);
}

.article-main ul {
  padding-left: 20px;
}

.article-main li + li {
  margin-top: 6px;
}

.cta-panel {
  margin-top: 22px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: linear-gradient(180deg, rgba(53, 189, 152, 0.08), var(--surface-soft));
}

@media (max-width: 1080px) {
  .stage,
  .section-head-wide,
  .category-grid,
  .choice-grid,
  .guide-article-grid,
  .check-grid,
  .do-dont-grid,
  .guide-grid,
  .timeline,
  .help-columns,
  .trust-grid,
  .evidence-panel,
  .article-layout,
  .related-links,
  .footer {
    grid-template-columns: 1fr;
  }

  .footer {
    display: grid;
  }

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

  .article-sidebar {
    position: static;
  }

  .article-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .acbuy-search-stage {
    min-height: auto;
    padding: clamp(24px, 5vw, 42px);
  }

  .acbuy-hero-content {
    width: 100%;
  }

  .acbuy-search-stage h1 {
    max-width: 12ch;
  }

  .acbuy-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    width: 100%;
  }

  .acbuy-steps li:nth-child(2)::after {
    display: none;
  }

  .directory-grid {
    grid-template-columns: repeat(3, minmax(150px, 1fr));
  }
}

@media (max-width: 760px) {
  .site-frame {
    padding: 10px 10px 22px;
  }

  .topbar {
    position: static;
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
    padding: 12px 14px;
  }

  h1 {
    max-width: none;
    font-size: clamp(1.65rem, 6.4vw, 2.15rem);
  }

  h2,
  .article-main h2 {
    max-width: none;
    font-size: clamp(1.16rem, 4.35vw, 1.48rem);
  }

  .main-nav {
    gap: 10px 14px;
  }

  .main-nav a,
  .footer-links a,
  .text-link {
    min-height: 44px;
  }

  .language-switcher {
    width: 100%;
  }

  .language-switcher summary {
    min-height: 44px;
  }

  .language-menu {
    position: static;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    width: 100%;
    max-height: 360px;
    margin-top: 8px;
    box-shadow: none;
  }

  .acbuy-search-stage {
    padding: 24px 16px 26px;
  }

  .acbuy-logo {
    margin-bottom: 14px;
    font-size: clamp(1.55rem, 6.6vw, 1.95rem);
  }

  .acbuy-search-stage h1 {
    max-width: 15ch;
    min-height: 1.55em;
    font-size: clamp(1.55rem, 6.4vw, 1.98rem);
    overflow-wrap: break-word;
  }

  .acbuy-search-form {
    grid-template-columns: 1fr;
    gap: 10px;
    width: calc(100% - 16px);
    min-height: 0;
    margin-top: 22px;
    padding: 10px;
    border-radius: 32px;
  }

  .acbuy-search-form input {
    height: 46px;
    padding: 0 14px;
    font-size: 0.9rem;
  }

  .acbuy-search-button {
    width: 100%;
    min-width: 0;
    min-height: 48px;
    height: auto;
    font-size: 0.92rem;
  }

  .acbuy-steps {
    grid-template-columns: 1fr;
    gap: 14px;
    margin-top: 24px;
  }

  .acbuy-steps li {
    display: grid;
    grid-template-columns: 48px minmax(0, 1fr);
    column-gap: 12px;
    align-items: center;
  }

  .acbuy-steps li::after {
    display: none;
  }

  .acbuy-steps span {
    grid-row: span 2;
    width: 48px;
    height: 48px;
    margin: 0;
    font-size: 1.12rem;
  }

  .acbuy-steps p {
    max-width: none;
    margin: 4px 0 0;
  }

  .directory-block {
    padding: 24px 12px;
  }

  .directory-head {
    margin-bottom: 16px;
  }

  .directory-head p {
    font-size: 0.62rem;
    letter-spacing: 0.15em;
  }

  .directory-head h2 {
    font-size: clamp(1.28rem, 5.15vw, 1.62rem);
  }

  .directory-head span {
    font-size: 0.82rem;
  }

  .directory-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
  }

  .directory-card {
    min-height: 102px;
    padding: 10px 8px;
    border-radius: var(--radius);
  }

  .category-card .directory-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 8px;
    border-radius: var(--radius);
    font-size: 1.3rem;
  }

  .directory-card strong {
    font-size: clamp(0.72rem, 2.8vw, 0.82rem);
  }

  .strip {
    max-width: 100%;
  }

  .decision-table {
    table-layout: fixed;
  }

  .decision-table th,
  .decision-table td {
    padding: 12px 10px;
    overflow-wrap: anywhere;
  }
}

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

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}