:root {
  color-scheme: light;
  --bg: #f5f7f6;
  --text: #172126;
  --muted: #5a6870;
  --line: #d6ddda;
  --line-strong: #bdc9c5;
  --accent: #08768d;
  --accent-strong: #07566a;
  --accent-soft: #e5f3f5;
  --coral: #d65f4a;
  --gold: #c79224;
  --panel: #ffffff;
  --panel-subtle: #f0f4f2;
  --shadow: 0 8px 24px rgba(20, 40, 48, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  accent-color: var(--accent);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px;
  line-height: 1.55;
}

body::before {
  background: linear-gradient(90deg, var(--accent) 0 56%, var(--coral) 56% 78%, var(--gold) 78% 100%);
  content: "";
  display: block;
  height: 4px;
}

main {
  width: min(960px, calc(100% - 32px));
  margin: 0 auto;
  padding: 36px 0 72px;
}

nav {
  margin-bottom: 32px;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-nav a {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 650;
  text-decoration: none;
}

.site-nav a:hover {
  color: var(--accent-strong);
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color 140ms ease;
}

a:hover {
  color: var(--accent-strong);
}

.hero {
  margin-bottom: 28px;
  max-width: 780px;
}

.eyebrow {
  color: var(--accent-strong);
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.09em;
  margin: 0 0 10px;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  line-height: 1.18;
  margin: 0;
}

h1 {
  font-family: "Segoe UI Variable Display", "Segoe UI", system-ui, sans-serif;
  font-size: 2.55rem;
  font-weight: 760;
  margin-bottom: 10px;
}

h2 {
  border-top: 1px solid var(--line);
  font-size: 1.4rem;
  font-weight: 720;
  margin-top: 32px;
  padding-top: 24px;
}

h3 {
  color: var(--text);
  font-size: 1.02rem;
  font-weight: 720;
  margin-top: 26px;
}

p {
  color: var(--muted);
  margin: 10px 0;
}

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

li {
  margin: 10px 0;
}

.archive {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
}

.archive-month {
  border-bottom: 1px solid var(--line);
  padding: 2px 0 18px;
}

.archive-month + .archive-month {
  padding-top: 12px;
}

.archive-month summary {
  align-items: center;
  cursor: pointer;
  display: flex;
  font-size: 1.05rem;
  font-weight: 720;
  gap: 16px;
  justify-content: space-between;
  list-style: none;
  min-height: 44px;
}

.archive-month summary::-webkit-details-marker {
  display: none;
}

.archive-month summary::before {
  color: var(--accent);
  content: "+";
  flex: 0 0 auto;
  font-size: 1.25rem;
  font-weight: 500;
  line-height: 1;
  order: 3;
}

.archive-month[open] summary::before {
  content: "\2212";
}

.archive-month-count {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 600;
  margin-left: auto;
}

.archive li {
  align-items: center;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 6px;
  display: grid;
  gap: 20px;
  grid-template-columns: minmax(0, 1fr) auto;
  margin: 10px 0;
  padding: 0;
  transition: border-color 140ms ease, box-shadow 140ms ease, transform 140ms ease;
}

.archive li:hover {
  border-color: var(--line-strong);
  box-shadow: 0 5px 16px rgba(20, 40, 48, 0.07);
  transform: translateY(-1px);
}

.archive a {
  align-items: center;
  display: flex;
  font-weight: 650;
  gap: 12px;
  justify-content: space-between;
  min-width: 0;
  padding: 14px 0 14px 16px;
}

.archive-arrow {
  color: var(--muted);
  font-size: 1.1rem;
  transition: transform 140ms ease;
}

.archive li:hover .archive-arrow {
  transform: translateX(3px);
}

.archive time {
  color: var(--muted);
  flex: 0 0 auto;
  font-size: 0.9rem;
  padding-right: 16px;
}

.home-section {
  border-top: 1px solid var(--line);
  margin-top: 28px;
  padding-top: 22px;
}

.home-section > h2 {
  border-top: 0;
  margin-top: 0;
  padding-top: 0;
}

.latest-issue {
  align-items: center;
  background: var(--accent-soft);
  border-left: 4px solid var(--accent);
  border-radius: 0 6px 6px 0;
  display: flex;
  gap: 16px;
  justify-content: space-between;
  margin-top: 14px;
  padding: 18px 20px;
}

.latest-issue-link {
  align-items: center;
  display: flex;
  font-size: 1.08rem;
  font-weight: 720;
  gap: 12px;
  justify-content: space-between;
  min-width: 0;
}

.latest-arrow {
  color: var(--accent-strong);
  font-size: 1.2rem;
  transition: transform 140ms ease;
}

.latest-issue-link:hover .latest-arrow {
  transform: translateX(3px);
}

.latest-issue time {
  color: var(--muted);
  flex: 0 0 auto;
  font-size: 0.9rem;
}

.search-disclosure summary {
  align-items: center;
  cursor: pointer;
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(0, 1fr) auto auto;
  list-style: none;
  min-height: 44px;
}

.search-disclosure summary::-webkit-details-marker {
  display: none;
}

.search-disclosure summary::after {
  color: var(--accent);
  content: "+";
  font-size: 1.35rem;
  font-weight: 500;
  line-height: 1;
}

.search-disclosure[open] summary::after {
  content: "\2212";
}

.search-disclosure summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 5px;
}

.search-summary-title {
  font-size: 1.4rem;
  font-weight: 720;
  line-height: 1.18;
}

.search-summary-hint {
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 600;
}

.search-body {
  padding-top: 4px;
}

.search-control {
  margin-top: 8px;
  position: relative;
}

.search-input {
  background: var(--panel);
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  color: var(--text);
  font: inherit;
  min-height: 48px;
  padding: 11px 48px 11px 14px;
  transition: border-color 140ms ease, box-shadow 140ms ease;
  width: 100%;
}

.search-input::-webkit-search-cancel-button {
  appearance: none;
}

.search-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(8, 118, 141, 0.14);
  outline: 0;
}

.clear-search {
  align-items: center;
  background: transparent;
  border: 0;
  border-radius: 4px;
  color: var(--muted);
  cursor: pointer;
  display: flex;
  font: inherit;
  font-size: 1.4rem;
  height: 36px;
  justify-content: center;
  padding: 0;
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
}

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

.clear-search:hover {
  background: var(--panel-subtle);
  color: var(--text);
}

.clear-search:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.digest-filters {
  align-items: end;
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(3, minmax(0, 1fr)) auto;
  margin-top: 14px;
}

.filter-field {
  display: grid;
  gap: 6px;
  min-width: 0;
}

.filter-field span {
  color: var(--muted);
  font-size: 0.74rem;
  font-weight: 720;
  text-transform: uppercase;
}

.filter-field select {
  background: var(--panel);
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  color: var(--text);
  font: inherit;
  min-height: 42px;
  min-width: 0;
  padding: 7px 34px 7px 10px;
  width: 100%;
}

.filter-field select:hover {
  border-color: var(--accent);
}

.filter-field select:focus-visible,
.reset-filters:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.reset-filters {
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  font-size: 0.84rem;
  font-weight: 650;
  min-height: 42px;
  padding: 7px 12px;
}

.reset-filters:hover {
  border-color: var(--accent);
  color: var(--accent-strong);
}

.reset-filters[hidden] {
  display: none;
}

.search-status {
  color: var(--accent-strong);
  font-size: 0.86rem;
  font-weight: 650;
  margin-bottom: 0;
}

.search-results {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
}

.search-results li {
  border-top: 1px solid var(--line);
  margin: 0;
  padding: 15px 0;
}

.search-results a {
  font-weight: 650;
}

.search-result-meta {
  align-items: center;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  font-size: 0.88rem;
  gap: 6px 10px;
  margin-top: 3px;
}

.search-result-meta > :not(.provider-badge):not(:last-child)::after,
.story-meta > :not(.provider-badge):not(:last-child)::after {
  color: var(--line-strong);
  content: "/";
  margin-left: 10px;
}

.provider-badge {
  background: #e8eff1;
  border: 1px solid #c8d8dc;
  border-radius: 999px;
  color: #31505a;
  display: inline-flex;
  font-size: 0.72rem;
  font-weight: 750;
  line-height: 1;
  padding: 5px 8px;
}

.provider-badge[data-provider="vonage"] {
  background: #e9e7fa;
  border-color: #cbc4ef;
  color: #4b3e94;
}

.provider-badge[data-provider="twilio"] {
  background: #fbe8eb;
  border-color: #efc3ca;
  color: #9a2f40;
}

.provider-badge[data-provider="telnyx"] {
  background: #e2f2ed;
  border-color: #b9dbd0;
  color: #17644f;
}

.provider-badge[data-provider="ringcentral"] {
  background: #fff0dc;
  border-color: #efd2aa;
  color: #85551a;
}

.provider-badge[data-provider="nextiva"] {
  background: #e5eefb;
  border-color: #bfd1ec;
  color: #315f96;
}

.provider-badge[data-provider="dialpad"] {
  background: #f0e7f6;
  border-color: #d8c2e7;
  color: #70428d;
}

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

article {
  max-width: 820px;
}

article > h1 {
  max-width: 760px;
}

article > p:first-of-type {
  font-size: 0.86rem;
  margin: 2px 0 28px;
}

article ul {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
}

.story-item {
  border-bottom: 1px solid var(--line);
  margin: 0;
  padding: 13px 0;
}

.story-link {
  font-weight: 650;
}

.story-meta {
  align-items: center;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  font-size: 0.82rem;
  gap: 6px 10px;
  margin-top: 6px;
}

article #highlights + ul {
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 4px solid var(--coral);
  border-radius: 0 6px 6px 0;
  box-shadow: var(--shadow);
  padding: 4px 18px;
}

article #highlights + ul .story-item:last-child {
  border-bottom: 0;
}

.page-actions {
  align-items: center;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  margin: 40px 0 0;
  max-width: 820px;
  padding-top: 20px;
}

.page-actions a {
  align-items: center;
  display: inline-flex;
  font-size: 0.92rem;
  font-weight: 700;
  gap: 8px;
  min-height: 40px;
  text-decoration: none;
}

.page-actions a:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.index-actions {
  max-width: none;
}

@media (max-width: 640px) {
  main {
    width: min(100% - 24px, 960px);
    padding-top: 28px;
  }

  h1 {
    font-size: 1.9rem;
  }

  .latest-issue {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
    padding: 16px;
  }

  .latest-issue-link {
    width: 100%;
  }

  .search-summary-hint {
    display: none;
  }

  .search-disclosure summary {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .archive li {
    gap: 2px;
    grid-template-columns: 1fr;
  }

  .archive a {
    padding: 13px 14px 4px;
  }

  .archive time {
    padding: 0 14px 13px;
  }

  .digest-filters {
    align-items: stretch;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .filter-field-date {
    grid-column: 1 / -1;
  }

  .reset-filters {
    grid-column: 1 / -1;
    justify-self: start;
  }

  article #highlights + ul {
    padding: 4px 14px;
  }

  .page-actions {
    gap: 16px;
    margin-top: 32px;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #111719;
    --text: #edf4f2;
    --muted: #a4b2b2;
    --line: #2e3b3d;
    --line-strong: #435356;
    --accent: #62c3d3;
    --accent-strong: #93dce7;
    --accent-soft: #183338;
    --coral: #ef806c;
    --gold: #e0b34f;
    --panel: #182023;
    --panel-subtle: #263134;
    --shadow: 0 8px 24px rgba(0, 0, 0, 0.22);
  }

  .provider-badge {
    background: #263438;
    border-color: #3b5056;
    color: #c5d7dc;
  }

  .provider-badge[data-provider="vonage"] {
    background: #302c4c;
    border-color: #514b79;
    color: #d2ccff;
  }

  .provider-badge[data-provider="twilio"] {
    background: #482830;
    border-color: #70404b;
    color: #ffc7d0;
  }

  .provider-badge[data-provider="telnyx"] {
    background: #203c34;
    border-color: #345e52;
    color: #b9ebdb;
  }

  .provider-badge[data-provider="ringcentral"] {
    background: #473721;
    border-color: #6c5431;
    color: #f7d7a5;
  }

  .provider-badge[data-provider="nextiva"] {
    background: #24364b;
    border-color: #3b5878;
    color: #c5ddfa;
  }

  .provider-badge[data-provider="dialpad"] {
    background: #392b43;
    border-color: #5c456c;
    color: #e6caF4;
  }
}