:root {
  --bg: #f5f7f9;
  --surface: #ffffff;
  --surface-2: #eef1f5;
  --text: #12171d;
  --muted: #5d6873;
  --line: #e3e7ec;
  --primary: #0d7a6f;
  --primary-ink: #ffffff;
  --primary-soft: #e2f1ee;
  --accent: #e2552f;
  --accent-soft: #fdece7;
  --warn: #9a6200;
  --warn-soft: #fdf3e0;
  --chip: #eef1f5;
  --shadow: 0 1px 2px rgba(16, 24, 40, .04), 0 8px 24px rgba(16, 24, 40, .06);
  --radius: 16px;
  --radius-sm: 10px;
  --maxw: 1080px;
}

html[data-theme='dark'] {
  --bg: #0f1215;
  --surface: #171c21;
  --surface-2: #1e242b;
  --text: #eef2f5;
  --muted: #9aa6b2;
  --line: #262d34;
  --primary: #5fd3c6;
  --primary-ink: #06231f;
  --primary-soft: #14332f;
  --accent: #ff8f70;
  --accent-soft: #35211b;
  --warn: #e8b264;
  --warn-soft: #33280f;
  --chip: #232a31;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 10px 28px rgba(0, 0, 0, .38);
}

* { box-sizing: border-box; }

/* The UA's [hidden]{display:none} loses to any display rule below, and every
   panel here sets one — so state it explicitly or every panel renders always. */
[hidden] { display: none !important; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.55 -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  padding-bottom: calc(32px + env(safe-area-inset-bottom));
}

a { color: inherit; text-decoration: none; }
h1, h2, h3 { margin: 0; font-weight: 700; letter-spacing: -.01em; }
button { font: inherit; cursor: pointer; }

.offline-bar {
  position: sticky; top: 0; z-index: 40;
  background: var(--warn-soft); color: var(--warn);
  padding: 7px 16px calc(7px); font-size: 13px; text-align: center;
  padding-top: calc(7px + env(safe-area-inset-top));
}

/* ---------------------------------------------------------------- header */

.top {
  position: sticky; top: 0; z-index: 30;
  background: color-mix(in srgb, var(--surface) 86%, transparent);
  backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--line);
  padding-top: env(safe-area-inset-top);
}
.top-inner { max-width: var(--maxw); margin: 0 auto; padding: 10px 16px 0; }

.brand-row { display: flex; align-items: center; gap: 12px; }
.brand h1 { font-size: 21px; line-height: 1.2; }
.brand .sub { margin: 2px 0 0; font-size: 13px; color: var(--muted); }
.top-actions { margin-left: auto; display: flex; align-items: center; gap: 8px; }

.weather {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--primary-soft); color: var(--primary);
  border-radius: 999px; padding: 5px 11px; font-size: 13px; font-weight: 600; white-space: nowrap;
}

.icon-btn {
  width: 38px; height: 38px; flex: 0 0 auto;
  display: inline-grid; place-items: center;
  border: 1px solid var(--line); border-radius: 50%;
  background: var(--surface); color: var(--text);
}
.icon-btn svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

.tabs {
  display: flex; gap: 4px; margin-top: 8px;
  overflow-x: auto; scrollbar-width: none;
  padding-bottom: 8px;
}
.tabs::-webkit-scrollbar { display: none; }
.tabs a {
  flex: 0 0 auto; padding: 7px 13px; border-radius: 999px;
  font-size: 14px; font-weight: 600; color: var(--muted); white-space: nowrap;
  border: 1px solid transparent;
}
.tabs a.active { background: var(--primary); color: var(--primary-ink); }

/* ------------------------------------------------------------------ main */

.shell { max-width: var(--maxw); margin: 0 auto; padding: 16px; }
.block { margin: 0 0 26px; }
.block-title { font-size: 17px; margin-bottom: 12px; display: flex; align-items: center; gap: 6px; }
.loading, .empty, .error { color: var(--muted); text-align: center; padding: 40px 16px; }
.error { color: var(--accent); }

.top3 { display: grid; gap: 14px; }
@media (min-width: 720px) { .top3 { grid-template-columns: repeat(3, 1fr); } }

/* ---------------------------------------------------------------- cards */

.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow); display: flex; flex-direction: column;
}
/* A padding-based ratio, not aspect-ratio: as a column-flex item the media box
   otherwise collapses to the image's own proportions and the card turns square. */
.card-media { position: relative; width: 100%; padding-top: 62.5%; background: var(--surface-2); }
.card-media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; display: block; }
.card-ph {
  position: absolute; inset: 0; display: grid; place-items: center; font-size: 46px;
  background: linear-gradient(135deg, var(--surface-2), var(--primary-soft));
}
.card-badge {
  position: absolute; left: 10px; top: 10px;
  background: rgba(12, 18, 24, .72); color: #fff; backdrop-filter: blur(4px);
  border-radius: 999px; padding: 4px 10px; font-size: 12px; font-weight: 600;
}
.card-badge.warn { background: rgba(154, 98, 0, .88); }
.card-body { padding: 13px 14px 14px; display: flex; flex-direction: column; gap: 9px; flex: 1; }
.card-title { font-size: 16px; line-height: 1.35; }
.card-oneline { margin: 0; color: var(--muted); font-size: 13.5px; }
.card-facts { display: flex; flex-wrap: wrap; gap: 6px 12px; font-size: 13px; color: var(--text); }
.card-facts span { display: inline-flex; align-items: center; gap: 4px; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tag {
  font-size: 12px; padding: 3px 9px; border-radius: 999px;
  background: var(--chip); color: var(--muted); border: 1px solid transparent;
}
.tag.hot { background: var(--primary-soft); color: var(--primary); }
.tag.warn { background: var(--warn-soft); color: var(--warn); }

.card-cta { margin-top: auto; display: flex; align-items: center; gap: 8px; padding-top: 4px; }
.cta {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--primary); color: var(--primary-ink);
  border: 0; border-radius: 10px; padding: 9px 15px; font-size: 14px; font-weight: 600;
}
.cta.ghost { background: var(--surface-2); color: var(--text); }
.cta-hint { font-size: 12.5px; color: var(--muted); }
.card-src { font-size: 12px; color: var(--muted); }
.card-src a { text-decoration: underline; text-underline-offset: 2px; }

.action-note {
  font-size: 12.5px; color: var(--primary); background: var(--primary-soft);
  border-radius: 8px; padding: 7px 10px;
}
.action-note.warn { color: var(--warn); background: var(--warn-soft); }

/* ------------------------------------------------------------- timeline */

.timeline { list-style: none; margin: 0; padding: 0; position: relative; }
.timeline li { display: grid; grid-template-columns: 62px 1fr; gap: 12px; padding: 9px 0; }
.timeline .t { font-variant-numeric: tabular-nums; font-weight: 700; color: var(--primary); }
.timeline .what { font-size: 14.5px; }
.timeline .where { color: var(--muted); font-size: 13px; }

/* --------------------------------------------------------------- filters */

.filter-head { display: flex; align-items: center; gap: 12px; }
.filter-head .block-title { margin-bottom: 0; }
.ghost-btn, .primary-btn {
  border-radius: 10px; padding: 8px 14px; font-size: 14px; font-weight: 600; border: 1px solid var(--line);
  background: var(--surface); color: var(--text);
}
.primary-btn { background: var(--primary); color: var(--primary-ink); border-color: transparent; }
#openFilters { margin-left: auto; }

.quickchips { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 10px; }
.chip {
  border: 1px solid var(--line); background: var(--surface); color: var(--muted);
  border-radius: 999px; padding: 6px 12px; font-size: 13px; display: inline-flex; gap: 6px; align-items: center;
}
.chip b { font-weight: 600; opacity: .65; font-variant-numeric: tabular-nums; }
.chip.on { background: var(--primary); color: var(--primary-ink); border-color: transparent; }
.chip.on b { opacity: .85; }
.chip[hidden] { display: none; }
.more-chip { background: var(--surface-2); }
/* 首页常驻的分类快捷筛选（用户固定的分类）：主色描边区分它与普通时间/属性 chip。 */
.chip.pin-cat:not(.on) { border-color: var(--primary); color: var(--primary); }

.active-filters { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 10px; }
.active-filters .chip { cursor: pointer; }

.filter-group { margin-bottom: 18px; }
.filter-group h4 { font-size: 13px; color: var(--muted); margin: 0 0 8px; font-weight: 600; }
.filter-group .chip { margin: 0 0 7px; }
.chip-wrap { display: flex; flex-wrap: wrap; gap: 7px; }

/* ------------------------------------------------------------- my picks */

.filter-note { margin: 0 0 10px; color: var(--muted); font-size: 12.5px; }
/* 类型 chip 与它的「固定」开关成对出现，开关是显式按钮、不是长按手势。 */
.pin-pair { display: inline-flex; align-items: center; gap: 6px; margin: 0 0 7px; }
.pin-pair .chip { margin: 0; }
.pin-toggle {
  border: 1px solid var(--line); background: var(--surface); color: var(--muted);
  border-radius: 999px; padding: 6px 11px; font-size: 13px; font-weight: 600;
}
.pin-toggle.on { background: var(--primary-soft); color: var(--primary); border-color: transparent; }

.pin-group { margin-bottom: 18px; }
.pin-head { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; }
.pin-title { font-size: 15px; }
.pin-x { width: 30px; height: 30px; font-size: 14px; }
.pins-empty { color: var(--muted); font-size: 13.5px; margin: 0; }

/* ---------------------------------------------------------------- sheet */

.sheet { position: fixed; inset: 0; z-index: 60; background: rgba(10, 14, 18, .5); display: flex; align-items: flex-end; }
.sheet-panel {
  width: 100%; max-height: 86vh; background: var(--surface);
  border-radius: 18px 18px 0 0; display: flex; flex-direction: column;
  padding-bottom: env(safe-area-inset-bottom);
}
@media (min-width: 720px) { .sheet { align-items: center; justify-content: center; } .sheet-panel { max-width: 520px; border-radius: 18px; } }
.sheet-head { display: flex; align-items: center; justify-content: space-between; padding: 14px 16px; border-bottom: 1px solid var(--line); }
.sheet-body { padding: 16px; overflow: auto; }
.sheet-foot { display: flex; gap: 10px; padding: 12px 16px; border-top: 1px solid var(--line); }
.sheet-foot button { flex: 1; }

/* ---------------------------------------------------------------- modal */

.modal { position: fixed; inset: 0; z-index: 70; background: rgba(10, 14, 18, .55); display: flex; align-items: flex-end; }
@media (min-width: 720px) { .modal { align-items: center; justify-content: center; } }
.modal-panel {
  width: 100%; max-height: 90vh; overflow: auto; background: var(--surface);
  border-radius: 18px 18px 0 0; padding: 18px 16px calc(20px + env(safe-area-inset-bottom)); position: relative;
}
@media (min-width: 720px) { .modal-panel { max-width: 620px; border-radius: 18px; } }
.modal-panel.small { max-width: 460px; }
.modal-close { position: absolute; right: 12px; top: 12px; }
.modal h3 { font-size: 18px; margin-bottom: 10px; padding-right: 44px; }
.detail-hero { width: 100%; aspect-ratio: 16/9; object-fit: cover; border-radius: 12px; background: var(--surface-2); margin-bottom: 14px; }
.detail-time { font-weight: 700; color: var(--primary); margin-bottom: 10px; }
.detail-grid { display: grid; grid-template-columns: auto 1fr; gap: 6px 12px; font-size: 14px; margin-bottom: 14px; }
.detail-grid dt { color: var(--muted); }
.detail-grid dd { margin: 0; }
.detail-section { margin: 14px 0; }
.detail-section h4 { font-size: 13px; color: var(--muted); margin: 0 0 6px; }
/* 策展打卡条目的实拍照片：横向滚动，每张带图注与来源。 */
.photo-strip { display: flex; gap: 10px; overflow-x: auto; padding-bottom: 4px; -webkit-overflow-scrolling: touch; }
.photo-item { flex: 0 0 auto; width: 200px; margin: 0; }
.photo-item img { width: 200px; height: 150px; object-fit: cover; border-radius: var(--radius-sm); background: var(--surface-2); display: block; }
.photo-item figcaption { font-size: 12px; color: var(--muted); margin-top: 4px; line-height: 1.35; }
.setting-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin: 14px 0; flex-wrap: wrap; }
.segmented { display: inline-flex; background: var(--surface-2); border-radius: 10px; padding: 3px; }
.segmented button { border: 0; background: transparent; color: var(--muted); border-radius: 8px; padding: 6px 11px; font-size: 13px; font-weight: 600; }
.segmented button.on { background: var(--surface); color: var(--text); box-shadow: var(--shadow); }

/* ----------------------------------------------------------- communities */

.community-grid { display: grid; gap: 12px; }
@media (min-width: 720px) { .community-grid { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); } }
.community {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 14px; display: flex; flex-direction: column; gap: 8px;
}
.community h3 { font-size: 16px; }
.community p { margin: 0; color: var(--muted); font-size: 13.5px; }

/* ------------------------------------------------------------------ grid */

.section-grid { display: grid; gap: 14px; }
@media (min-width: 640px) { .section-grid { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); } }
.section-head { display: flex; align-items: baseline; gap: 8px; margin-bottom: 10px; }
.section-head .count { color: var(--muted); font-size: 13px; }

.foot { max-width: var(--maxw); margin: 0 auto; padding: 22px 16px 40px; color: var(--muted); font-size: 12.5px; text-align: center; }
.foot p { margin: 0 0 4px; }
.foot .dot { margin: 0 6px; }

@media (prefers-reduced-motion: no-preference) {
  .card, .community { transition: transform .15s ease, box-shadow .15s ease; }
  .card:hover { transform: translateY(-2px); }
}