:root {
  color-scheme: light;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f7f8fb;
  color: #18202f;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
}

button,
a {
  font: inherit;
}

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

.page {
  min-height: 100dvh;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
  padding: 0 24px;
  border-bottom: 1px solid #d9dee8;
  background: rgb(247 248 251 / 86%);
  backdrop-filter: blur(12px);
}

.brand {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-weight: 700;
}

.brand span,
.topbar nav,
.hero p,
.docs-grid p,
footer,
.status-row,
.message-preview,
.message-side,
.detail-from small {
  color: #657086;
}

.topbar nav {
  display: flex;
  gap: 18px;
  font-size: 13px;
}

main {
  width: min(1040px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  padding: 76px 0 40px;
  text-align: center;
}

.eyebrow {
  margin: 0 0 14px;
  color: #27605a;
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 760px;
  margin: 0 auto;
  font-size: clamp(40px, 7vw, 68px);
  line-height: 0.98;
  letter-spacing: 0;
}

.hero p {
  max-width: 640px;
  margin: 22px auto 0;
  font-size: 18px;
  line-height: 1.6;
}

.primary,
button {
  border: 1px solid #c4ccda;
  border-radius: 6px;
  background: #ffffff;
  color: #18202f;
  cursor: pointer;
}

.primary {
  display: inline-flex;
  margin-top: 28px;
  padding: 11px 16px;
  background: #18202f;
  color: white;
}

button {
  padding: 8px 11px;
}

button:hover,
.primary:hover {
  filter: brightness(0.97);
}

.inbox-section,
.docs-grid,
.faq {
  padding: 48px 0;
}

.inbox-card {
  overflow: hidden;
  border: 1px solid #d9dee8;
  border-radius: 8px;
  background: #ffffff;
}

.inbox-header,
.status-row,
.detail-title,
.detail-from {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  border-bottom: 1px solid #e3e7ef;
  padding: 14px 16px;
}

.address-block {
  min-width: 0;
}

.address-block span {
  display: block;
  margin-bottom: 4px;
  color: #657086;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
}

.address-block code {
  display: block;
  overflow: hidden;
  font-size: 22px;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.live-dot::before {
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 7px;
  border-radius: 50%;
  background: #929bae;
  content: "";
}

.live-dot.connected::before {
  background: #1d8f70;
}

.live-dot.connecting::before {
  background: #b58024;
}

.notice,
.error {
  border-bottom: 1px solid #e3e7ef;
  padding: 10px 16px;
  font-size: 14px;
}

.notice {
  background: #eef8f5;
  color: #15564b;
}

.error {
  background: #fff0f0;
  color: #9f2020;
}

.mail-layout {
  display: grid;
  min-height: 560px;
  grid-template-columns: minmax(260px, 340px) 1fr;
}

.message-list {
  min-width: 0;
  border-right: 1px solid #e3e7ef;
}

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

.message-row {
  display: grid;
  width: 100%;
  grid-template-columns: 38px minmax(0, 1fr) auto;
  gap: 10px;
  padding: 13px 14px;
  border: 0;
  border-bottom: 1px solid #edf0f5;
  border-radius: 0;
  text-align: left;
}

.message-row.active,
.message-row:hover {
  background: #f0f4f8;
}

.avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: #dfe9f0;
  color: #1e4955;
  font-weight: 700;
}

.message-meta {
  min-width: 0;
}

.message-meta span,
.message-side span,
.detail-from span {
  display: block;
}

.message-from,
.message-subject,
.message-preview,
.detail-title h2,
.detail-from strong,
.detail-from small {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.message-subject {
  margin-top: 2px;
  font-weight: 650;
}

.message-preview,
.message-side {
  margin-top: 3px;
  font-size: 12px;
}

.unread {
  width: 7px;
  height: 7px;
  margin-left: auto;
  border-radius: 50%;
  background: #18202f;
}

.message-detail {
  min-width: 0;
}

.detail {
  display: flex;
  min-height: 560px;
  flex-direction: column;
}

.detail-title {
  justify-content: flex-start;
}

.detail-title h2 {
  min-width: 0;
  flex: 1;
  margin: 0;
  font-size: 16px;
}

.back {
  display: none;
}

.danger {
  color: #9f2020;
}

.detail-from {
  justify-content: flex-start;
}

.message-frame {
  width: 100%;
  min-height: 420px;
  flex: 1;
  border: 0;
}

.message-body {
  min-height: 420px;
  margin: 0;
  padding: 18px;
  overflow: auto;
  white-space: pre-wrap;
}

.attachments {
  display: grid;
  gap: 8px;
  border-bottom: 1px solid #e3e7ef;
  padding: 12px 16px;
}

.attachment {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border: 1px solid #d9dee8;
  border-radius: 6px;
  padding: 10px 12px;
}

.attachment-info {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 2px;
}

.attachment-info strong,
.attachment-info span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.attachment-info span {
  color: #657086;
  font-size: 12px;
}

.empty {
  display: flex;
  min-height: 220px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 24px;
  color: #657086;
  text-align: center;
}

.docs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  align-items: stretch;
}

.docs-grid > div {
  grid-column: 1 / -1;
  text-align: center;
}

.docs-grid h2,
.faq h2 {
  margin: 0;
  font-size: 30px;
}

.docs-grid pre {
  overflow: auto;
  margin: 0;
  border: 1px solid #d9dee8;
  border-radius: 8px;
  background: #18202f;
  color: #f7f8fb;
  padding: 18px;
  line-height: 1.55;
}

.text-link {
  display: inline-flex;
  width: max-content;
  border-bottom: 1px solid currentColor;
  color: #15564b;
  font-weight: 700;
}

.content-page {
  max-width: 800px;
  margin: 0 auto;
}

.content-hero {
  padding: 56px 0 36px;
}

.content-hero h1 {
  margin: 0;
  font-size: clamp(34px, 6vw, 56px);
  line-height: 1.02;
  letter-spacing: 0;
}

.content-hero p {
  max-width: 680px;
  color: #657086;
  font-size: 18px;
  line-height: 1.65;
}

.content-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.secondary {
  display: inline-flex;
  align-items: center;
  border: 1px solid #c4ccda;
  border-radius: 6px;
  padding: 11px 16px;
  background: #ffffff;
}

.content-section {
  padding: 38px 0;
}

.content-section h2 {
  margin: 0 0 14px;
  font-size: 28px;
}

.content-section h3 {
  margin: 0 0 6px;
}

.content-section p,
.check-list,
.step-list {
  color: #657086;
  line-height: 1.65;
}

.check-list,
.step-list {
  display: grid;
  gap: 10px;
  padding-left: 22px;
}

.code-block {
  margin: 16px 0;
}

.code-block > span {
  display: inline-flex;
  border: 1px solid #303949;
  border-bottom: 0;
  border-radius: 6px 6px 0 0;
  background: #252e3e;
  color: #dce6f3;
  padding: 6px 10px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
}

.code-block pre {
  overflow: auto;
  margin: 0;
  border-radius: 0 8px 8px;
  background: #18202f;
  color: #f7f8fb;
  padding: 18px;
  line-height: 1.55;
}

.endpoint-list {
  display: grid;
  overflow: hidden;
  border: 1px solid #d9dee8;
  border-radius: 8px;
  background: #ffffff;
}

.endpoint-row {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 4px 12px;
  padding: 13px 15px;
  border-bottom: 1px solid #edf0f5;
}

.endpoint-row:last-child {
  border-bottom: 0;
}

.endpoint-row span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 58px;
  border-radius: 4px;
  background: #eef2f6;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
  font-weight: 700;
}

.endpoint-row code {
  min-width: 0;
  overflow: hidden;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.endpoint-row p {
  grid-column: 2;
  margin: 0;
}

.info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.info-grid > div {
  border: 1px solid #d9dee8;
  border-radius: 8px;
  background: #ffffff;
  padding: 16px;
}

.faq {
  max-width: 720px;
  margin: 0 auto;
}

.faq details {
  border-bottom: 1px solid #d9dee8;
  padding: 16px 0;
}

.faq summary {
  cursor: pointer;
  font-weight: 700;
}

footer {
  padding: 36px 16px 48px;
  text-align: center;
}

@media (max-width: 760px) {
  .topbar {
    padding: 0 16px;
  }

  .topbar nav {
    gap: 10px;
  }

  .hero {
    padding-top: 52px;
  }

  .inbox-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .actions {
    justify-content: flex-start;
  }

  .mail-layout,
  .docs-grid,
  .info-grid {
    grid-template-columns: 1fr;
  }

  .endpoint-row {
    grid-template-columns: 1fr;
  }

  .endpoint-row p {
    grid-column: 1;
  }

  .message-list {
    border-right: 0;
  }

  .is-hidden-mobile {
    display: none;
  }

  .back {
    display: inline-flex;
  }
}