:root {
  --paper: #f8f6ef;
  --paper-deep: #ede5d2;
  --ink: #1d2427;
  --muted: #647174;
  --line: rgba(29, 36, 39, 0.14);
  --red: #b3352b;
  --teal: #176b64;
  --gold: #b7822d;
  --white: #fffdfa;
  --shadow: 0 18px 60px rgba(29, 36, 39, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
  color: var(--ink);
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Songti SC", "Noto Serif CJK SC", "Source Han Serif SC", serif;
  letter-spacing: 0;
  background:
    radial-gradient(circle at 8% 0%, rgba(179, 53, 43, 0.12), transparent 34rem),
    radial-gradient(circle at 100% 18%, rgba(23, 107, 100, 0.13), transparent 32rem),
    linear-gradient(180deg, #fbfaf6 0%, var(--paper) 42%, #f1eadb 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.24;
  background-image:
    linear-gradient(rgba(29, 36, 39, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(29, 36, 39, 0.035) 1px, transparent 1px);
  background-size: 18px 18px;
  mask-image: linear-gradient(180deg, black, transparent 82%);
}

a {
  color: inherit;
}

.page-shell {
  width: min(100%, 780px);
  margin: 0 auto;
  padding: 18px 14px 40px;
}

.masthead {
  position: relative;
  overflow: hidden;
  min-height: 210px;
  padding: 20px 20px 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(145deg, rgba(255, 253, 250, 0.94), rgba(245, 236, 216, 0.96)),
    url("assets/masthead.svg") right top / 260px auto no-repeat;
  box-shadow: var(--shadow);
}

.masthead::after {
  content: "";
  position: absolute;
  right: -70px;
  bottom: -80px;
  width: 220px;
  height: 220px;
  border: 1px solid rgba(179, 53, 43, 0.2);
  transform: rotate(18deg);
}

.topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 22px;
  font-size: 13px;
  color: var(--muted);
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(179, 53, 43, 0.34);
  border-radius: 50%;
  color: var(--red);
  font-weight: 800;
  font-size: 18px;
  background: rgba(255, 253, 250, 0.72);
}

.source-pill {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  max-width: 52%;
  padding: 7px 12px;
  border: 1px solid rgba(23, 107, 100, 0.24);
  border-radius: 999px;
  color: var(--teal);
  text-decoration: none;
  background: rgba(255, 253, 250, 0.74);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

h1 {
  max-width: 12em;
  margin: 0;
  font-size: clamp(32px, 8vw, 58px);
  line-height: 0.98;
  font-weight: 900;
}

.summary {
  max-width: 34em;
  margin: 18px 0 0;
  font-size: 17px;
  line-height: 1.75;
  color: #334144;
}

.action-row {
  display: flex;
  gap: 10px;
  margin-top: 26px;
  flex-wrap: wrap;
}

button {
  min-height: 40px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  background: var(--white);
  font: inherit;
  font-weight: 700;
}

button.primary {
  border-color: var(--red);
  color: var(--white);
  background: var(--red);
}

.digest {
  margin-top: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 253, 250, 0.84);
  box-shadow: 0 12px 34px rgba(29, 36, 39, 0.08);
}

.digest-section {
  display: grid;
  grid-template-columns: 62px 1fr;
  gap: 14px;
  padding: 22px 18px;
  border-bottom: 1px solid var(--line);
}

.digest-section:last-child {
  border-bottom: 0;
}

.section-index {
  color: rgba(179, 53, 43, 0.36);
  font-family: Georgia, serif;
  font-size: 30px;
  font-weight: 800;
}

.kicker {
  margin: 0 0 5px;
  color: var(--gold);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
}

h2,
h3 {
  margin: 0;
  font-weight: 900;
}

h2 {
  font-size: 23px;
}

.brief-list {
  display: grid;
  gap: 12px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.brief-list li {
  position: relative;
  padding-left: 18px;
  font-size: 16px;
  line-height: 1.72;
}

.brief-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.8em;
  width: 7px;
  height: 7px;
  background: var(--teal);
  transform: rotate(45deg);
}

.brief-list li.article-item {
  display: grid;
  gap: 7px;
  padding: 14px 14px 14px 18px;
  border: 1px solid rgba(29, 36, 39, 0.1);
  border-radius: 8px;
  background: rgba(255, 253, 250, 0.62);
}

.brief-list li.article-item::before {
  top: 22px;
}

.article-title {
  color: var(--ink);
  font-size: 17px;
  font-weight: 900;
  line-height: 1.48;
  text-decoration-color: rgba(23, 107, 100, 0.28);
  text-underline-offset: 4px;
}

.article-meta,
.article-body {
  margin: 0;
}

.article-meta {
  color: var(--gold);
  font-size: 12px;
  font-weight: 800;
}

.article-body {
  color: #354144;
  font-size: 15px;
  line-height: 1.78;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag-row span {
  padding: 3px 8px;
  border: 1px solid rgba(23, 107, 100, 0.18);
  border-radius: 999px;
  color: var(--teal);
  background: rgba(23, 107, 100, 0.06);
  font-size: 12px;
  line-height: 1.4;
}

.note-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.note-card {
  min-height: 152px;
  padding: 20px;
  border-radius: 8px;
  border: 1px solid rgba(29, 36, 39, 0.12);
  background: linear-gradient(180deg, rgba(255, 253, 250, 0.92), rgba(237, 229, 210, 0.74));
}

.note-card h3 {
  color: var(--teal);
  font-size: 18px;
}

.note-card p {
  margin: 11px 0 0;
  color: #3a474a;
  font-size: 15px;
  line-height: 1.68;
}

.archive {
  margin-top: 26px;
  padding: 20px 4px 0;
}

.archive h2 {
  font-size: 18px;
  margin-bottom: 12px;
}

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

.archive-list a {
  display: grid;
  grid-template-columns: 94px 1fr;
  gap: 12px;
  padding: 13px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  text-decoration: none;
  background: rgba(255, 253, 250, 0.74);
}

.archive-list a.active {
  border-color: rgba(179, 53, 43, 0.5);
  box-shadow: inset 4px 0 0 var(--red);
}

.archive-list span {
  color: var(--muted);
  font-size: 13px;
}

.archive-list strong {
  font-size: 15px;
}

.feedback-panel {
  margin-top: 24px;
  padding: 20px 4px 0;
}

.feedback-panel h2 {
  margin-bottom: 12px;
  font-size: 18px;
}

.feedback-panel textarea {
  display: block;
  width: 100%;
  min-height: 112px;
  resize: vertical;
  padding: 13px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: rgba(255, 253, 250, 0.78);
  font: inherit;
  font-size: 15px;
  line-height: 1.65;
}

.feedback-panel textarea:focus {
  outline: 2px solid rgba(23, 107, 100, 0.22);
  border-color: rgba(23, 107, 100, 0.42);
}

.feedback-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 10px;
}

.feedback-actions button {
  border-color: rgba(23, 107, 100, 0.26);
  color: var(--teal);
}

#feedbackStatus {
  color: var(--muted);
  font-size: 13px;
}

.empty-state {
  min-height: 100vh;
  display: grid;
  place-items: center;
  color: var(--muted);
}

@media (max-width: 560px) {
  .page-shell {
    padding: 10px 10px 32px;
  }

  .masthead {
    min-height: 220px;
    padding: 17px 16px 18px;
    background-size: 190px auto;
  }

  .topline {
    margin-bottom: 24px;
  }

  .source-pill {
    max-width: 60%;
    font-size: 12px;
  }

  .summary {
    font-size: 16px;
  }

  .digest-section {
    grid-template-columns: 44px 1fr;
    gap: 9px;
    padding: 21px 14px;
  }

  .section-index {
    font-size: 24px;
  }

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

  .archive-list a {
    grid-template-columns: 1fr;
    gap: 4px;
  }
}