:root {
  --bg: #f4f5f7;
  --surface: #ffffff;
  --line: #dcdfe4;
  --text: #16181d;
  --text-soft: #5a6069;
  --accent: #1a56c4;
  --accent-press: #113f95;
  --hero: #0f1115;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  padding: 0 0 40px;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.6;
}

.topbar {
  padding: 20px 16px 12px;
  padding-left: max(16px, env(safe-area-inset-left));
  padding-right: max(16px, env(safe-area-inset-right));
}

.topbar h1 {
  margin: 0;
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.5px;
}

.updated {
  margin: 4px 0 0;
  font-size: 13px;
  color: var(--text-soft);
}

.block {
  margin: 0 0 24px;
  padding: 0 16px;
  padding-left: max(16px, env(safe-area-inset-left));
  padding-right: max(16px, env(safe-area-inset-right));
}

.block-title {
  margin: 0 0 10px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-soft);
}

/* 卡片 */
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 12px;
}

.card:last-child { margin-bottom: 0; }

.thumb {
  position: relative;
  aspect-ratio: 16 / 9;
  background: #e6e8eb;
  display: flex;
  align-items: center;
  justify-content: center;
}

.thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.thumb img[hidden] { display: none; }

.thumb-fallback {
  position: absolute;
  font-size: 13px;
  color: #666c75;
}

.thumb-fallback[hidden] { display: none; }

.badge {
  position: absolute;
  right: 8px;
  bottom: 8px;
  background: rgba(12, 14, 18, 0.82);
  color: #fff;
  font-size: 12px;
  line-height: 1;
  padding: 5px 7px;
  border-radius: 5px;
  font-variant-numeric: tabular-nums;
}

.badge[hidden] { display: none; }

.body { padding: 12px 14px 14px; }

.date {
  margin: 0 0 4px;
  font-size: 12px;
  color: var(--text-soft);
  font-variant-numeric: tabular-nums;
}

.title {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.meta {
  margin: 0 0 12px;
  font-size: 13px;
  color: var(--text-soft);
  overflow-wrap: anywhere;
}

/* 按钮 */
.btn {
  display: block;
  width: 100%;
  min-height: 44px;
  border-radius: 8px;
  border: 1px solid transparent;
  font-size: 15px;
  font-family: inherit;
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  line-height: 1.3;
  padding: 11px 10px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

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

.btn-download:active { background: var(--accent-press); }

.btn-download.is-disabled {
  background: #e6e8eb;
  color: #62686f;
  pointer-events: none;
}

.copy-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-top: 8px;
}

.btn-ghost {
  background: var(--surface);
  border-color: var(--line);
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  padding: 11px 4px;
}

.btn-ghost:active { background: #eceef1; }

.btn-ghost:disabled {
  color: #62686f;
  background: #f2f3f5;
  cursor: default;
}

.btn-ghost.copied {
  border-color: var(--accent);
  color: var(--accent);
}

/* 今日大卡片 */
.card.hero {
  border-color: var(--hero);
  border-width: 2px;
}

.card.hero .title { font-size: 20px; }

.card.hero .body { padding: 14px 16px 16px; }

/* 往期折叠 */
details {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
}

.summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  padding: 14px 16px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  min-height: 44px;
}

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

.summary::after {
  content: "展开";
  font-size: 13px;
  font-weight: 400;
  color: var(--accent);
}

details[open] .summary::after { content: "收起"; }

.summary-count {
  margin-left: auto;
  font-size: 13px;
  font-weight: 400;
  color: var(--text-soft);
}

details > div {
  padding: 0 12px 12px;
}

/* 存到相册提示 */
.save-tip { margin-top: 8px; }

/* 与摘要文字左对齐，覆盖「往期」折叠用的 12px 内边距 */
.save-tip > div { padding: 0 16px 14px; }

.save-tip-steps {
  margin: 0;
  padding-left: 20px;
  font-size: 14px;
  color: var(--text-soft);
}

.save-tip-steps li { overflow-wrap: anywhere; }

.save-tip-note {
  margin: 8px 0 0;
  font-size: 13px;
  color: var(--text-soft);
  overflow-wrap: anywhere;
}

/* 提示 */
.notice {
  margin: 0 16px;
  padding: 20px 16px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--text-soft);
  font-size: 14px;
  text-align: center;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: calc(20px + env(safe-area-inset-bottom));
  transform: translate(-50%, 12px);
  max-width: calc(100vw - 32px);
  background: rgba(15, 17, 21, 0.92);
  color: #fff;
  font-size: 14px;
  padding: 9px 16px;
  border-radius: 999px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

@media (min-width: 640px) {
  body { max-width: 620px; margin: 0 auto; }
  .card.hero .title { font-size: 22px; }
}