:root {
  --paper: #f5f8f7;
  --paper-soft: #fbfdf9;
  --card: #ffffff;
  --ink: #101418;
  --body: #29323a;
  --muted: #68757c;
  --line: #dbe6e2;
  --line-dark: #b7c9c3;
  --mint: #168765;
  --mint-soft: #dff3ec;
  --cyan: #0a9fb5;
  --cyan-soft: #dff6f8;
  --amber: #ce8a19;
  --amber-soft: #f7e7c6;
  --radius: 6px;
  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", Arial, sans-serif;
  --serif: "Songti SC", "STSong", "Source Han Serif SC", "Noto Serif CJK SC", Georgia, serif;
  --mono: "SFMono-Regular", "Cascadia Code", "Menlo", monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 20% 8%, rgb(10 159 181 / 13%), transparent 18rem),
    radial-gradient(circle at 82% 18%, rgb(22 135 101 / 13%), transparent 22rem),
    linear-gradient(90deg, rgb(16 20 24 / 4%) 1px, transparent 1px),
    linear-gradient(0deg, rgb(16 20 24 / 3%) 1px, transparent 1px),
    linear-gradient(var(--paper), var(--paper));
  background-size: auto, auto, 32px 32px, 32px 32px, auto;
  font-family: var(--sans);
  line-height: 1.62;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.28;
  background-image:
    linear-gradient(115deg, transparent 0 46%, rgb(10 159 181 / 8%) 46% 47%, transparent 47% 100%),
    radial-gradient(circle at 30% 10%, rgb(16 20 24 / 6%) 0 1px, transparent 1px),
    radial-gradient(circle at 80% 30%, rgb(22 135 101 / 7%) 0 1px, transparent 1px);
  background-size: 220px 220px, 8px 8px, 11px 11px;
  mix-blend-mode: multiply;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: 320px 1fr 450px;
  align-items: center;
  gap: 28px;
  min-height: 76px;
  padding: 0 66px;
  border-bottom: 1px solid var(--line);
  background: rgb(251 253 249 / 88%);
  backdrop-filter: blur(18px);
}

.brand {
  display: grid;
  gap: 3px;
}

.brand strong {
  font-family: var(--serif);
  font-size: 22px;
  line-height: 1.1;
}

.brand span {
  color: var(--muted);
  font-family: var(--sans);
  font-size: 13px;
}

.nav {
  display: flex;
  justify-content: center;
  gap: 58px;
  color: #1f292f;
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 700;
}

.nav a,
.site-footer a {
  border-bottom: 1px solid transparent;
  transition: color 160ms ease, border-color 160ms ease;
}

.site-footer a {
  justify-self: start;
  width: fit-content;
}

.nav a:hover,
.site-footer a:hover {
  color: var(--cyan);
  border-bottom-color: currentColor;
}

.search-box {
  position: relative;
  justify-self: end;
  display: grid;
  grid-template-columns: 1fr 42px;
  align-items: center;
  width: min(100%, 450px);
  height: 46px;
  border: 1px solid var(--line-dark);
  border-radius: 6px;
  background: rgb(255 255 255 / 76%);
  box-shadow: inset 0 1px 0 rgb(255 255 255 / 80%);
}

.search-box input {
  min-width: 0;
  border: 0;
  outline: 0;
  padding: 0 18px;
  background: transparent;
  color: var(--body);
  font: 14px var(--sans);
}

.search-box button {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 0;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  transition: color 160ms ease, transform 160ms ease;
}

.search-box button:hover {
  color: var(--cyan);
  transform: translateY(-1px);
}

.search-box svg {
  width: 19px;
  height: 19px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
}

.search-popover {
  position: absolute;
  z-index: 20;
  top: calc(100% + 8px);
  right: 0;
  display: grid;
  width: min(450px, calc(100vw - 32px));
  overflow: hidden;
  border: 1px solid var(--line-dark);
  border-radius: 6px;
  background: rgb(255 253 247 / 96%);
  box-shadow: 0 20px 46px rgb(16 20 24 / 14%);
}

.search-popover[hidden] {
  display: none;
}

.search-popover-head,
.search-empty,
.search-all-link {
  padding: 12px 14px;
  font-family: var(--sans);
  font-size: 13px;
}

.search-popover-head {
  color: var(--cyan);
  font-weight: 800;
  border-bottom: 1px solid var(--line);
}

.search-result-item {
  display: grid;
  gap: 4px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
}

.search-result-item:hover {
  background: rgb(10 159 181 / 7%);
}

.search-result-item span,
.search-result-item small {
  color: var(--muted);
  font-family: var(--sans);
  font-size: 12px;
}

.search-result-item strong {
  color: var(--ink);
  font: 800 15px var(--sans);
}

.search-all-link {
  color: var(--cyan);
  font-weight: 800;
  text-align: center;
}

main,
.site-footer {
  width: min(1810px, calc(100% - 72px));
  margin: 0 auto;
}

.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: clamp(500px, 46vw, 610px);
  margin-top: 34px;
  padding: clamp(42px, 5vw, 70px) clamp(24px, 4vw, 74px);
  overflow: hidden;
  border: 1px solid rgb(183 201 195 / 82%);
  border-radius: 8px;
  background-image:
    linear-gradient(90deg, rgb(245 248 247 / 98%) 0%, rgb(245 248 247 / 93%) 34%, rgb(245 248 247 / 64%) 58%, rgb(245 248 247 / 16%) 100%),
    url("/assets/hero-ai-workspace.webp");
  background-size: cover;
  background-position: center right;
  background-repeat: no-repeat;
  box-shadow: 0 24px 80px rgb(16 20 24 / 8%);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgb(10 159 181 / 14%) 1px, transparent 1px),
    linear-gradient(0deg, rgb(22 135 101 / 12%) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(90deg, #000 0%, rgb(0 0 0 / 76%) 48%, transparent 83%);
}

.hero::after {
  content: "01 / PRACTICAL AI";
  position: absolute;
  right: 28px;
  bottom: 22px;
  color: rgb(16 20 24 / 36%);
  font: 700 12px var(--mono);
  letter-spacing: 0;
}

.hero-copy {
  position: relative;
  z-index: 1;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  width: auto;
  margin: 0 0 18px;
  padding: 8px 12px;
  border: 1px solid rgb(10 159 181 / 36%);
  border-radius: 999px;
  background: rgb(223 246 248 / 62%);
  color: #096f80;
  font: 800 12px var(--mono);
  letter-spacing: 0;
}

.hero-kicker::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 5px rgb(10 159 181 / 14%);
}

.hero-copy h1 {
  font-family: var(--serif);
  margin: 0;
  width: min(960px, 62vw);
  max-width: none;
  font-size: clamp(56px, 5.5vw, 96px);
  line-height: 0.98;
  letter-spacing: 0;
  font-weight: 900;
  white-space: nowrap;
}

.hero-copy > p:not(.hero-kicker) {
  max-width: 610px;
  margin: 22px 0 30px;
  color: var(--body);
  font-size: 20px;
  line-height: 1.82;
}

.trust-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 0 0 30px;
  max-width: 880px;
}

.trust-list div {
  position: relative;
  min-height: 78px;
  padding: 12px 14px 12px 52px;
  border: 1px solid rgb(219 230 226 / 80%);
  border-radius: 8px;
  background: rgb(255 255 255 / 52%);
}

.trust-list div::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 16px;
  width: 28px;
  height: 28px;
  border: 1.5px solid rgb(22 135 101 / 60%);
  border-radius: 50%;
  background:
    linear-gradient(135deg, transparent 40%, rgb(10 159 181 / 24%) 41%),
    var(--mint-soft);
}

.trust-list dt {
  margin: 0 0 2px;
  font-size: 16px;
  font-weight: 800;
}

.trust-list dd {
  margin: 0;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 13px;
}

.hero-actions {
  display: flex;
  gap: 14px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 154px;
  min-height: 56px;
  padding: 0 26px;
  border: 1.5px solid var(--ink);
  border-radius: 6px;
  font-family: var(--sans);
  font-size: 16px;
  font-weight: 800;
  transition: background 160ms ease, border-color 160ms ease, color 160ms ease, transform 160ms ease;
}

.button.primary {
  background: var(--ink);
  color: #fffdf7;
}

.button.secondary {
  background: rgb(255 255 255 / 50%);
}

.button:hover {
  border-color: var(--cyan);
  transform: translateY(-2px);
}

.ad-slot {
  display: grid;
  place-items: center;
  align-content: center;
  min-height: 170px;
  padding: 24px;
  border: 1px solid rgb(183 201 195 / 80%);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgb(255 255 255 / 72%), rgb(223 246 248 / 36%)),
    linear-gradient(90deg, rgb(16 20 24 / 4%) 1px, transparent 1px);
  background-size: auto, 28px 28px;
  color: var(--muted);
  text-align: center;
  font-family: var(--sans);
}

.ad-slot span {
  color: var(--mint);
  font-weight: 800;
}

.ad-slot small {
  margin-top: 4px;
  font-size: 13px;
}

.ad-slot strong {
  color: var(--ink);
  font-family: var(--mono);
}

.sponsor-strip {
  display: grid;
  grid-template-columns: 170px repeat(3, minmax(0, 1fr));
  gap: 16px;
  align-items: center;
  margin-bottom: 40px;
  padding: 17px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgb(255 255 255 / 62%);
  font-family: var(--sans);
}

.sponsor-strip strong {
  color: var(--mint);
}

.sponsor-strip div {
  display: grid;
  place-items: center;
  min-height: 58px;
  border: 1px solid var(--line);
  color: #7a898f;
  background: rgb(251 253 249 / 76%);
}

.methods-shell,
.cases-shell,
.tools-newsletter {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 390px;
  gap: 36px;
  padding: 36px 0 44px;
}

.content-main,
.right-rail,
.comparison-panel,
.tag-panel,
.tools-panel,
.newsletter {
  min-width: 0;
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 22px;
  margin-bottom: 22px;
}

.section-head h2,
.tools-panel h2,
.newsletter h2,
.rail-card h2,
.tag-panel h2 {
  font-family: var(--serif);
  margin: 0;
  font-size: 29px;
  line-height: 1.16;
}

.section-head h2::after,
.tools-panel h2::after,
.newsletter h2::after,
.rail-card h2::after,
.tag-panel h2::after {
  content: "";
  display: block;
  width: 44px;
  height: 3px;
  margin-top: 10px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--cyan), var(--mint));
}

.section-head p,
.tools-panel p,
.newsletter p,
.rail-card p {
  margin: 6px 0 0;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 15px;
}

.section-head a,
.tool-list a,
.all-tools {
  color: var(--cyan);
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 800;
}

.method-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.method-card,
.rail-card,
.comparison-panel,
.tag-panel,
.tools-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgb(255 255 255 / 78%);
  box-shadow: 0 14px 36px rgb(16 20 24 / 5%);
}

.method-card {
  overflow: hidden;
  transition: border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.method-card:hover {
  border-color: rgb(10 159 181 / 46%);
  box-shadow: 0 20px 42px rgb(10 159 181 / 12%);
  transform: translateY(-3px);
}

.method-card h3 {
  min-height: 55px;
  margin: 18px 18px 9px;
  font-size: 19px;
  line-height: 1.35;
}

.method-card p {
  min-height: 65px;
  margin: 0 18px 16px;
  color: var(--body);
  font-family: var(--sans);
  font-size: 14px;
}

.method-card footer {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 13px 18px 17px;
  color: #55656c;
  font-family: var(--sans);
  font-size: 12px;
  line-height: 1.7;
}

.card-art {
  position: relative;
  height: 154px;
  border-bottom: 1px solid var(--line);
  background: #eff7f5;
  overflow: hidden;
}

.card-art::before,
.card-art::after {
  content: none;
}

.card-art img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.right-rail {
  display: grid;
  align-content: start;
  gap: 36px;
}

.rail-card,
.tag-panel {
  padding: 28px;
}

.check-list {
  display: grid;
  gap: 0;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  font-family: var(--sans);
}

.check-list li {
  position: relative;
  padding: 17px 0 17px 42px;
  border-top: 1px solid var(--line);
  color: var(--body);
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 16px;
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border-radius: 4px;
  background: linear-gradient(135deg, var(--cyan), var(--mint));
  color: #fffdf7;
  font-size: 14px;
  font-weight: 900;
}

.square {
  min-height: 350px;
}

.comparison-panel {
  padding: 28px;
}

.table-wrap {
  max-width: 100%;
  overflow-x: auto;
}

table {
  width: 100%;
  min-width: 930px;
  border-collapse: collapse;
  background: #fff;
  font-family: var(--sans);
  font-size: 14px;
}

th,
td {
  padding: 15px 17px;
  border: 1px solid var(--line);
  text-align: left;
  white-space: nowrap;
}

th {
  background: #edf6f3;
  color: #1f292f;
  font-weight: 800;
}

td:nth-child(2) {
  color: var(--amber);
  letter-spacing: 1px;
}

.note {
  margin: 16px 0 0;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 13px;
}

.tag-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.tag-grid a {
  display: grid;
  place-items: center;
  min-height: 58px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgb(255 255 255 / 68%);
  color: #405057;
  font-family: var(--sans);
  transition: border-color 160ms ease, color 160ms ease, transform 160ms ease;
}

.tag-grid a:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  transform: translateY(-2px);
}

.wide {
  min-height: 92px;
  margin: 24px 0 36px;
}

.tools-newsletter {
  grid-template-columns: 690px minmax(0, 1fr);
}

.tools-panel {
  padding: 28px;
}

.tool-list {
  display: grid;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.tool-list li {
  display: grid;
  grid-template-columns: 36px 1fr auto;
  gap: 18px;
  align-items: center;
  padding: 18px 0;
  border-top: 1px solid var(--line);
  font-family: var(--sans);
}

.tool-icon {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 3px;
  background: linear-gradient(135deg, var(--cyan), var(--mint));
  color: #fffdf7;
}

.tool-icon::before {
  color: #fffdf7;
  font: 800 17px var(--sans);
}

.tool-icon.write::before {
  content: "✎";
}

.tool-icon.image::before {
  content: "▧";
}

.tool-icon.video::before {
  content: "▶";
  font-size: 14px;
}

.tool-icon.auto::before {
  content: "⌘";
}

.all-tools {
  display: inline-block;
  margin-top: 18px;
}

.newsletter {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 34px;
  padding: 40px 48px;
  border: 1px solid rgb(22 135 101 / 58%);
  border-radius: var(--radius);
  background:
    linear-gradient(90deg, rgb(10 159 181 / 12%) 1px, transparent 1px),
    linear-gradient(0deg, rgb(22 135 101 / 10%) 1px, transparent 1px),
    radial-gradient(circle at 86% 28%, rgb(10 159 181 / 18%), transparent 9rem),
    linear-gradient(135deg, #e7f5ef, #fff8df);
  background-size: 32px 32px, 32px 32px, auto, auto;
  box-shadow: 0 18px 44px rgb(22 135 101 / 12%);
}

.newsletter h2 {
  font-size: 42px;
}

.newsletter ul {
  display: grid;
  gap: 8px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  color: var(--body);
  font-family: var(--sans);
}

.newsletter li::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgb(10 159 181 / 12%);
}

.newsletter-form {
  display: grid;
  grid-template-columns: 1fr 130px;
  gap: 0;
  margin-top: auto;
}

.newsletter-form input {
  min-width: 0;
  min-height: 54px;
  border: 1px solid var(--line-dark);
  border-right: 0;
  border-radius: 4px 0 0 4px;
  padding: 0 16px;
  background: rgb(255 255 255 / 86%);
  font: 15px var(--sans);
}

.newsletter-form button {
  min-height: 54px;
  border: 1px solid var(--ink);
  border-radius: 0 4px 4px 0;
  background: var(--ink);
  color: #fffdf7;
  font: 800 15px var(--sans);
  cursor: pointer;
  transition: background 160ms ease, border-color 160ms ease;
}

.newsletter-form button:hover {
  border-color: var(--cyan);
  background: var(--cyan);
}

#formMessage {
  grid-column: 1 / -1;
  margin: 10px 0 0;
  color: var(--mint);
  font-family: var(--sans);
  font-size: 13px;
}

#formMessage.is-error {
  color: #b54730;
}

.newsletter-form button:disabled {
  cursor: wait;
  opacity: 0.72;
}

.hidden-submit-frame {
  position: absolute;
  width: 1px;
  height: 1px;
  border: 0;
  opacity: 0;
  pointer-events: none;
}

.search-page {
  width: min(980px, calc(100% - 64px));
  margin: 0 auto;
  padding: 72px 0 96px;
}

.search-hero {
  margin-bottom: 28px;
}

.search-hero h1 {
  margin: 12px 0 12px;
  color: var(--ink);
  font: 900 clamp(40px, 7vw, 76px) / 0.98 var(--serif);
  letter-spacing: 0;
}

.search-hero p:last-child {
  color: var(--muted);
  font: 600 16px / 1.8 var(--sans);
}

.search-page-results {
  display: grid;
  gap: 14px;
}

.search-page-item a,
.search-page-empty {
  display: grid;
  gap: 8px;
  padding: 22px;
  border: 1px solid var(--line-dark);
  border-radius: 6px;
  background: rgb(255 253 247 / 82%);
}

.search-page-item a:hover {
  border-color: rgb(10 159 181 / 48%);
  background: rgb(10 159 181 / 6%);
}

.search-page-item span {
  color: var(--cyan);
  font: 800 12px var(--sans);
}

.search-page-item h2 {
  margin: 0;
  color: var(--ink);
  font: 900 24px / 1.25 var(--serif);
  letter-spacing: 0;
}

.search-page-item p,
.search-page-empty {
  margin: 0;
  color: var(--muted);
  font: 600 14px / 1.7 var(--sans);
}

.site-footer {
  display: grid;
  grid-template-columns: 1.5fr 0.7fr 0.7fr 0.7fr 390px;
  gap: 50px;
  padding: 44px 0 58px;
  border-top: 1px solid var(--line);
}

.site-footer strong {
  display: block;
  font-size: 24px;
  line-height: 1.2;
}

.site-footer p {
  color: var(--muted);
  font-family: var(--sans);
}

.site-footer nav {
  display: grid;
  align-content: start;
  gap: 12px;
  color: #5d574d;
  font-family: var(--sans);
}

.footer-ad {
  min-height: 200px;
}

.footer-note {
  grid-column: 1 / -1;
  margin: 0;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 13px;
}

.article-page {
  width: min(960px, calc(100% - 36px));
  margin: 0 auto;
  padding: 64px 0 90px;
}

.article {
  position: relative;
  padding: clamp(28px, 5vw, 64px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(90deg, rgb(10 159 181 / 4%) 1px, transparent 1px),
    linear-gradient(0deg, rgb(22 135 101 / 4%) 1px, transparent 1px),
    rgb(255 253 247 / 91%);
  background-size: 32px 32px, 32px 32px, auto;
  box-shadow: 0 22px 70px rgb(16 20 24 / 7%);
}

.article h1 {
  max-width: 820px;
  margin: 0 0 24px;
  font-family: var(--serif);
  font-size: clamp(36px, 5.2vw, 62px);
  line-height: 1.1;
  letter-spacing: 0;
}

.article h1 + p {
  max-width: 780px;
  margin: 0 0 30px;
  padding: 18px 20px;
  border-left: 4px solid var(--cyan);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: rgb(255 255 255 / 64%);
  color: #263139;
  font-size: clamp(18px, 2vw, 21px);
  line-height: 1.9;
}

.article-figure {
  margin: 34px 0 40px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgb(255 255 255 / 72%);
  box-shadow: 0 16px 36px rgb(16 20 24 / 6%);
}

.article-figure img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: #eef6f4;
}

.article-figure figcaption {
  padding: 13px 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font: 14px/1.7 var(--sans);
}

.article h2 {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 42px 0 14px;
  font-family: var(--serif);
  font-size: clamp(24px, 3vw, 30px);
  line-height: 1.25;
}

.article h2::before {
  content: "";
  flex: 0 0 10px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 5px rgb(10 159 181 / 13%);
}

.article p,
.article li {
  color: #2e383f;
  font-family: var(--sans);
  font-size: 18px;
  line-height: 1.92;
}

.article ol,
.article ul {
  margin: 16px 0 0;
  padding: 18px 20px 18px 2em;
  border: 1px solid rgb(219 230 226 / 84%);
  border-radius: var(--radius);
  background: rgb(255 255 255 / 58%);
}

.article li + li {
  margin-top: 8px;
}

.article a {
  color: #087f93;
  border-bottom: 1px solid rgb(10 159 181 / 36%);
}

.article-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  color: var(--cyan);
  font: 800 12px/1 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.article-kicker::before {
  content: "";
  width: 26px;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 28px;
}

.article-meta span,
.tag-pill,
.tool-badge,
.badge {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgb(255 255 255 / 68%);
  color: var(--muted);
  font: 800 12px var(--sans);
}

.article-meta span {
  padding: 0 12px;
}

.article-summary-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin: 30px 0 36px;
}

.summary-card {
  min-height: 112px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(145deg, rgb(223 246 248 / 70%), transparent 68%),
    rgb(255 255 255 / 72%);
}

.summary-card-label {
  display: block;
  color: var(--muted);
  font: 800 11px var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.summary-card-value {
  display: block;
  margin: 8px 0 4px;
  color: var(--ink);
  font: 900 24px/1.1 var(--serif);
}

.summary-card-sub {
  color: #526068;
  font-size: 13px;
  line-height: 1.55;
}

.article-toc {
  margin: 0 0 44px;
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-left: 4px solid var(--cyan);
  border-radius: var(--radius);
  background: rgb(255 255 255 / 74%);
}

.toc-title {
  margin-bottom: 12px;
  color: var(--muted);
  font: 800 12px var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.article-toc ol {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
  list-style: none;
  counter-reset: article-toc;
}

.article-toc li {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 10px;
  font-size: 15px;
  line-height: 1.6;
  counter-increment: article-toc;
}

.article-toc li::before {
  content: counter(article-toc, decimal-leading-zero);
  color: var(--cyan);
  font: 800 12px var(--mono);
}

.article-section {
  margin: 0 0 52px;
}

.section-header {
  display: grid;
  grid-template-columns: 42px 1fr;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.section-num {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: var(--radius);
  background: var(--cyan);
  color: #fff;
  font: 900 14px var(--mono);
}

.article .section-title {
  margin: 0;
  font-family: var(--serif);
}

.article .section-title::before {
  content: none;
}

.prose p {
  margin: 0 0 18px;
}

.feature-grid,
.income-paths {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 26px 0;
}

.feature-card,
.income-path,
.tool-item,
.callout,
.process-node {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgb(255 255 255 / 72%);
}

.feature-card {
  padding: 20px;
}

.feature-icon {
  display: inline-grid;
  place-items: center;
  min-width: 44px;
  height: 34px;
  margin-bottom: 12px;
  border-radius: 999px;
  background: var(--cyan-soft);
  color: #087f93;
  font: 900 12px var(--mono);
}

.feature-card h3,
.income-path h3,
.tool-info h3,
.step-content h3,
.process-node h3 {
  margin: 0 0 8px;
  color: var(--ink);
  font: 900 16px/1.45 var(--sans);
}

.feature-card p,
.income-path p,
.tool-info p,
.step-content p,
.process-node p,
.callout p {
  margin: 0;
  color: #46545c;
  font-size: 14px;
  line-height: 1.78;
}

.process-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin: 26px 0;
}

.process-node {
  position: relative;
  min-height: 128px;
  padding: 16px;
}

.process-tag {
  display: inline-flex;
  margin-bottom: 10px;
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--mint-soft);
  color: var(--mint);
  font: 900 11px var(--mono);
}

.step-flow {
  display: grid;
  gap: 0;
  margin: 26px 0;
}

.step-item {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 16px;
  position: relative;
}

.step-item:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 20px;
  top: 46px;
  bottom: -4px;
  width: 2px;
  background: linear-gradient(var(--cyan), transparent);
  opacity: 0.28;
}

.step-dot {
  z-index: 1;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 2px solid rgb(10 159 181 / 38%);
  border-radius: 999px;
  background: #f5fbfb;
  color: var(--cyan);
  font: 900 14px var(--mono);
}

.step-content {
  padding-bottom: 22px;
}

.callout {
  display: grid;
  grid-template-columns: 8px 1fr;
  gap: 16px;
  margin: 28px 0;
  padding: 18px 20px;
  background:
    linear-gradient(90deg, rgb(10 159 181 / 14%), transparent 70%),
    rgb(255 255 255 / 72%);
}

.callout::before {
  content: "";
  border-radius: 999px;
  background: var(--cyan);
}

.callout strong {
  display: block;
  margin-bottom: 4px;
  color: var(--ink);
  font-size: 14px;
}

.tool-list {
  display: grid;
  gap: 12px;
  margin: 24px 0;
}

.tool-item {
  display: grid;
  grid-template-columns: 82px 1fr;
  gap: 14px;
  padding: 16px 18px;
}

.tool-badge,
.badge {
  justify-content: center;
  padding: 0 10px;
  color: var(--cyan);
  background: var(--cyan-soft);
  border-color: rgb(10 159 181 / 18%);
}

.income-path {
  padding: 20px;
  border-top: 3px solid var(--cyan);
}

.income-path.gold-top {
  border-top-color: var(--amber);
}

.income-path.green-top {
  border-top-color: var(--mint);
}

.income-path .range {
  margin-bottom: 10px;
  color: var(--cyan);
  font: 900 22px/1.2 var(--serif);
}

.income-path.gold-top .range {
  color: var(--amber);
}

.income-path.green-top .range {
  color: var(--mint);
}

.income-table {
  margin: 26px 0;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.article .income-table table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
  background: rgb(255 255 255 / 76%);
}

.article .income-table th,
.article .income-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.article .income-table th {
  background: #0f8aa0;
  color: #fff;
  font: 900 13px var(--sans);
}

.article .income-table td {
  color: #46545c;
  font-size: 14px;
  line-height: 1.65;
}

.article .income-table tr:last-child td {
  border-bottom: 0;
}

.article .checklist {
  display: grid;
  gap: 10px;
  margin: 20px 0 0;
  padding: 0;
  border: 0;
  background: transparent;
  list-style: none;
}

.article .checklist li {
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 10px;
  margin: 0;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  color: #2e383f;
  font-size: 15px;
  line-height: 1.74;
}

.check-icon {
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border-radius: 999px;
  background: var(--mint-soft);
  color: var(--mint);
  font: 900 13px var(--sans);
}

.article-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 14px;
  margin-top: 58px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.footer-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-pill {
  padding: 0 12px;
}

.directory-page {
  width: min(1810px, calc(100% - 72px));
  margin: 0 auto;
  padding: 36px 0 86px;
}

.directory-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 430px;
  align-items: stretch;
  gap: 32px;
  margin-bottom: 34px;
  padding: 42px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(90deg, rgb(10 159 181 / 7%) 1px, transparent 1px),
    linear-gradient(0deg, rgb(22 135 101 / 7%) 1px, transparent 1px),
    rgb(255 253 247 / 86%);
  background-size: 32px 32px, 32px 32px, auto;
  box-shadow: 0 20px 56px rgb(16 20 24 / 6%);
}

.directory-kicker {
  margin: 0 0 16px;
  color: var(--cyan);
  font: 900 12px var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.directory-hero h1 {
  max-width: 780px;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(42px, 6vw, 76px);
  line-height: 1.04;
}

.directory-hero p {
  max-width: 760px;
  margin: 20px 0 0;
  color: var(--body);
  font-family: var(--sans);
  font-size: 18px;
  line-height: 1.86;
}

.directory-hero img {
  width: 100%;
  height: 100%;
  min-height: 280px;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #edf6f3;
}

.directory-toolbar {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 18px;
  margin: 0 0 22px;
}

.directory-toolbar h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: 30px;
  line-height: 1.16;
}

.directory-toolbar p {
  margin: 6px 0 0;
  color: var(--muted);
  font-family: var(--sans);
}

.directory-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.directory-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgb(255 255 255 / 78%);
  box-shadow: 0 14px 36px rgb(16 20 24 / 5%);
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.directory-card:hover {
  border-color: rgb(10 159 181 / 48%);
  box-shadow: 0 22px 46px rgb(10 159 181 / 12%);
  transform: translateY(-3px);
}

.directory-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-bottom: 1px solid var(--line);
  background: #edf6f3;
}

.directory-card-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 18px;
}

.directory-card h3 {
  margin: 0 0 10px;
  font-size: 20px;
  line-height: 1.35;
}

.directory-card p {
  margin: 0 0 16px;
  color: var(--body);
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.75;
}

.directory-card footer {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
}

.directory-pill {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgb(255 255 255 / 70%);
  color: var(--muted);
  font: 800 12px var(--sans);
}

.content-visual {
  margin: 30px 0 34px;
}

.content-visual img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #edf6f3;
  box-shadow: 0 16px 36px rgb(16 20 24 / 6%);
}

.content-split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin: 24px 0;
}

.content-panel {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgb(255 255 255 / 72%);
}

.content-panel h3 {
  margin: 0 0 8px;
  font: 900 17px/1.45 var(--sans);
}

.content-panel p {
  margin: 0;
  color: #46545c;
  font-size: 14px;
  line-height: 1.78;
}

.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;
}

@media (max-width: 1640px) {
  .site-header {
    grid-template-columns: 270px 1fr 360px;
    padding: 0 44px;
  }

  .nav {
    gap: 34px;
  }

  .hero-copy h1 {
    width: min(920px, 64vw);
    font-size: clamp(58px, 5.2vw, 86px);
  }
}

@media (max-width: 1280px) {
  .site-header {
    grid-template-columns: 250px 1fr;
    padding: 16px 28px;
  }

  .search-box {
    grid-column: 1 / -1;
    justify-self: stretch;
    width: 100%;
  }

  .hero-copy h1 {
    width: auto;
    white-space: normal;
  }

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

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

  .tools-newsletter,
  .newsletter {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 820px) {
  main,
  .site-footer {
    width: min(100% - 24px, 1810px);
  }

  .site-header,
  .hero,
  .directory-hero,
  .sponsor-strip,
  .methods-shell,
  .cases-shell,
  .tools-newsletter,
  .site-footer {
    grid-template-columns: 1fr;
  }

  .site-header {
    gap: 12px;
    min-height: auto;
    padding: 14px 16px;
  }

  .nav {
    justify-content: start;
    gap: 16px;
    overflow-x: auto;
    padding-bottom: 2px;
    font-size: 14px;
    scrollbar-width: none;
  }

  .nav::-webkit-scrollbar {
    display: none;
  }

  .brand strong {
    font-size: 20px;
  }

  .search-box {
    height: 44px;
  }

  .hero {
    min-height: auto;
    margin-top: 18px;
    padding: 34px 24px 28px;
    background-image:
      linear-gradient(90deg, rgb(245 248 247 / 98%) 0%, rgb(245 248 247 / 94%) 58%, rgb(245 248 247 / 72%) 100%),
      url("/assets/hero-ai-workspace.webp");
    background-position: 52% center;
  }

  .hero::after {
    right: 18px;
    bottom: 14px;
  }

  .hero-kicker {
    margin-bottom: 14px;
    padding: 7px 10px;
    font-size: 11px;
  }

  .hero-copy h1 {
    font-size: clamp(40px, 12.3vw, 52px);
    line-height: 1.02;
    width: auto;
    white-space: normal;
  }

  .hero-copy > p:not(.hero-kicker) {
    margin: 18px 0 22px;
    font-size: 17px;
    line-height: 1.72;
  }

  .directory-page {
    width: min(100% - 24px, 1810px);
    padding: 20px 0 64px;
  }

  .directory-hero {
    gap: 20px;
    padding: 24px;
  }

  .directory-hero h1 {
    font-size: clamp(36px, 11vw, 50px);
  }

  .directory-hero p {
    font-size: 16px;
    line-height: 1.76;
  }

  .directory-hero img {
    min-height: auto;
    aspect-ratio: 16 / 10;
  }

  .directory-toolbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .trust-list {
    grid-template-columns: 1fr;
    gap: 10px;
    margin-bottom: 22px;
  }

  .trust-list div {
    min-height: 48px;
    padding-top: 9px;
    padding-bottom: 9px;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }

  .button {
    min-width: 0;
    min-height: 52px;
    padding: 0 16px;
    font-size: 15px;
  }

  .sponsor-strip {
    gap: 10px;
    margin-bottom: 24px;
  }

  .sponsor-strip div {
    min-height: 48px;
  }

  .section-head {
    align-items: start;
    flex-direction: column;
    gap: 12px;
  }

  .square {
    min-height: 220px;
  }

  .method-grid,
  .directory-grid,
  .tag-grid,
  .newsletter-form {
    grid-template-columns: 1fr;
  }

  .content-split {
    grid-template-columns: 1fr;
  }

  .newsletter {
    padding: 28px;
  }

  .newsletter h2 {
    font-size: 34px;
  }

  .newsletter-form input,
  .newsletter-form button {
    border: 1px solid var(--line-dark);
    border-radius: 4px;
  }

  .article-page {
    width: min(100% - 24px, 1810px);
    padding: 32px 0 64px;
  }

  .article {
    padding: 24px;
  }

  .article h1 {
    margin-bottom: 18px;
    font-size: clamp(34px, 10vw, 44px);
    line-height: 1.16;
  }

  .article h1 + p {
    padding: 14px 16px;
    font-size: 17px;
    line-height: 1.78;
  }

  .article-figure {
    margin: 24px 0 30px;
  }

  .article-figure figcaption {
    font-size: 12px;
  }

  .article h2 {
    margin-top: 34px;
    font-size: 24px;
  }

  .article-meta {
    gap: 8px;
  }

  .article-summary-grid,
  .feature-grid,
  .income-paths,
  .process-row {
    grid-template-columns: 1fr;
  }

  .article-summary-grid {
    gap: 10px;
    margin: 24px 0 30px;
  }

  .summary-card {
    min-height: 0;
    padding: 15px 16px;
  }

  .article-toc {
    margin-bottom: 34px;
    padding: 18px;
  }

  .article-toc li {
    grid-template-columns: 30px 1fr;
    font-size: 14px;
  }

  .section-header {
    grid-template-columns: 36px 1fr;
    gap: 12px;
  }

  .section-num,
  .step-dot {
    width: 36px;
    height: 36px;
  }

  .step-item {
    grid-template-columns: 36px 1fr;
    gap: 12px;
  }

  .step-item:not(:last-child)::after {
    left: 17px;
    top: 40px;
  }

  .tool-item {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .tool-badge {
    justify-content: flex-start;
    width: max-content;
  }

  .income-table {
    margin-right: 0;
    overflow: visible;
  }

  .article .income-table table {
    display: block;
    min-width: 0;
    border-collapse: separate;
    background: transparent;
  }

  .article .income-table thead {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
  }

  .article .income-table tbody {
    display: grid;
    gap: 12px;
  }

  .article .income-table tr {
    display: block;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgb(255 255 255 / 78%);
  }

  .article .income-table td {
    display: grid;
    grid-template-columns: 76px minmax(0, 1fr);
    gap: 12px;
    width: 100%;
    padding: 12px 14px;
    border: 0;
    border-top: 1px solid var(--line);
    white-space: normal;
  }

  .article .income-table td::before {
    content: attr(data-label);
    color: var(--muted);
    font-size: 12px;
    font-weight: 800;
  }

  .article .income-table td:first-child {
    display: block;
    border-top: 0;
    background: #edf6f3;
    color: var(--ink);
    font-weight: 900;
  }

  .article .income-table td:first-child::before {
    content: none;
  }

  .article-footer {
    margin-top: 44px;
  }

  .article p,
  .article li {
    font-size: 16px;
    line-height: 1.86;
  }

  .article ol,
  .article ul {
    padding: 16px 16px 16px 1.6em;
  }

  .table-wrap {
    overflow: visible;
  }

  table,
  thead,
  tbody,
  tr,
  td {
    display: block;
    width: 100%;
    min-width: 0;
  }

  thead {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
  }

  tbody {
    display: grid;
    gap: 14px;
  }

  tr {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgb(255 255 255 / 78%);
    overflow: hidden;
  }

  td {
    display: grid;
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 12px;
    border: 0;
    border-top: 1px solid var(--line);
    padding: 12px 14px;
    white-space: normal;
  }

  td::before {
    content: attr(data-label);
    color: var(--muted);
    font-size: 12px;
    font-weight: 800;
  }

  td:first-child {
    display: block;
    border-top: 0;
    background: #edf6f3;
    color: var(--ink);
    font-weight: 900;
  }

  td:first-child::before {
    content: none;
  }

  .comparison-panel,
  .tag-panel,
  .tools-panel,
  .newsletter {
    width: 100%;
  }
}