/* ============================================================
   TrendHub v1.7.2 · 任务 → 结果体验
   设计原则：克制、内容优先、编辑式排版。
   前端只渲染后端给出的研究结果；不展示任何内部系统术语。
   ============================================================ */

body.experience-v2 {
  --paper: #f2f0ea;
  --paper-raised: #f8f6f1;
  --paper-sunk: #ece9e1;
  --ink: #232724;
  --ink-soft: #464c46;
  --muted: #787d74;
  --rule: #d9d5c9;
  --rule-soft: #e4e0d5;
  --accent: #223027;
  --accent-2: #42544a;
  --accent-soft: #e7e9e2;
  --ok: #2e6b46;
  --ok-soft: #e4efe7;
  --warn: #94651c;
  --warn-soft: #f3ead7;
  --missing: #8a8f87;
  --missing-soft: #ecece8;
  --serif: "Songti SC", STSong, "STSongti-SC", "Noto Serif CJK SC", "Source Han Serif SC", SimSun, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --mono: "SF Mono", "JetBrains Mono", "Cascadia Code", Consolas, "Courier New", monospace;
  --reading: 860px;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}

/* ---------- 外壳 ---------- */
body.experience-v2 .topbar {
  background: rgba(242, 240, 234, 0.92);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--rule);
  color: var(--ink);
}
/* 顶栏与首页 / 研究页共享同一条阅读对齐轴 */
body.experience-v2 .topbar-inner,
body.experience-v2 .home-page,
body.experience-v2 .rv-page {
  max-width: var(--reading);
  margin-left: auto;
  margin-right: auto;
}
body.experience-v2 .topbar-inner { display: flex; align-items: center; gap: 12px; width: 100%; min-width: 0; }
body.experience-v2 .topbar-title {
  font-size: 15px;
  font-weight: 650;
  margin: 0;
  color: var(--ink);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
body.experience-v2 .brand {
  color: var(--ink);
  gap: 10px;
  padding: 18px 14px 12px;
  text-decoration: none;
  align-items: center;
}
body.experience-v2 .brand-logo {
  background: var(--accent);
  color: #f4f2ec;
  border-radius: 8px;
  width: 32px;
  height: 32px;
  flex: 0 0 32px;
  display: grid;
  place-items: center;
}
body.experience-v2 .brand-text { display: flex; flex-direction: column; line-height: 1.18; min-width: 0; }
body.experience-v2 .brand-name { font-family: var(--serif); font-size: 16px; font-weight: 700; color: var(--ink); }
body.experience-v2 .brand-sub { font-size: 11px; color: var(--muted); }
body.experience-v2 .top-spacer { flex: 1; }

body.experience-v2 .sidebar {
  background: var(--paper);
  border-right: 1px solid var(--rule);
}
body.experience-v2 .sidebar nav { padding: 18px 12px 40px; }
body.experience-v2 .nav-group-name {
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--muted);
  padding: 16px 16px 6px;
  font-weight: 600;
}
body.experience-v2 .nav-item {
  color: var(--ink-soft);
  border-radius: 8px;
  margin: 1px 6px;
  border: 1px solid transparent;
}
body.experience-v2 .nav-item:hover { background: var(--paper-raised); color: var(--ink); }
body.experience-v2 .nav-item.active {
  background: var(--accent);
  color: #f4f2ec;
  font-weight: 600;
}
body.experience-v2 .nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
  width: 38px;
  height: 36px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: 9px;
  cursor: pointer;
}
body.experience-v2 .nav-toggle span { display: block; width: 20px; height: 2px; border-radius: 2px; background: var(--ink); }
body.experience-v2 .navigation-sheet {
  background: var(--paper);
  color: var(--ink);
  display: none;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 60;
  max-height: 88vh;
  overflow: auto;
  border-bottom: 1px solid var(--rule);
  box-shadow: 0 18px 48px rgba(20, 24, 20, 0.22);
}
body.experience-v2 .navigation-sheet .sheet-head {
  position: sticky;
  top: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  background: var(--paper-raised);
  border-bottom: 1px solid var(--rule);
}
body.experience-v2 .navigation-sheet .sheet-close {
  width: 34px;
  height: 34px;
  border: 1px solid var(--rule);
  background: transparent;
  border-radius: 8px;
  font-size: 20px;
  line-height: 1;
  color: var(--ink);
  cursor: pointer;
}
body.experience-v2 .navigation-sheet .sheet-scroll { padding: 8px 12px 28px; }
body.experience-v2 .navigation-sheet .nav-item { color: var(--ink-soft); }
body.experience-v2 .nav-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 55;
  background: rgba(30, 32, 28, 0.42);
}
body.experience-v2.nav-open #navigationSheet { display: flex; }
body.experience-v2.nav-open #navBackdrop { display: block; }
body.experience-v2 #navigationSheet[hidden],
body.experience-v2 #navBackdrop[hidden] { display: none; }

body.experience-v2 .content {
  background: var(--paper);
  color: var(--ink);
}
body.experience-v2 .foot {
  max-width: var(--reading);
  margin: 22px auto 0;
  padding: 18px 4px 6px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.7;
  border-top: 1px solid var(--rule-soft);
}
body.experience-v2 .foot .dot { margin: 0 6px; }

/* ---------- 通用排版 ---------- */
body.experience-v2 .lead {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-soft);
  margin-bottom: 18px;
}
body.experience-v2 .btn.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #f4f2ec;
}
body.experience-v2 .btn.primary:hover { background: var(--accent-2); }
body.experience-v2 .btn.lg { height: 52px; padding: 0 26px; font-size: 15.5px; border-radius: 10px; }
body.experience-v2 .btn.sm { padding: 6px 12px; font-size: 13px; }
body.experience-v2 input.input,
body.experience-v2 select,
body.experience-v2 .home-keyword {
  background: var(--paper-raised);
  border: 1px solid var(--rule);
  border-radius: 10px;
  color: var(--ink);
}
body.experience-v2 input:focus,
body.experience-v2 select:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent-2); }
body.experience-v2 .card {
  background: var(--paper-raised);
  border: 1px solid var(--rule-soft);
  border-radius: 12px;
  box-shadow: none;
}
body.experience-v2 .note { border-radius: 10px; }
body.experience-v2 .badge.ok,
body.experience-v2 .badge[data-q="ok"] { background: var(--ok-soft); color: var(--ok); }

/* ============================================================
   首页：搜索 / 最近研究 / 正在关注 / 趋势发现
   ============================================================ */
.home-hero {
  padding: 26px 0 22px;
  border-bottom: 1px solid var(--rule);
}
.home-title {
  font-family: var(--serif);
  font-size: 32px;
  line-height: 1.32;
  font-weight: 700;
  margin: 0 0 10px;
  letter-spacing: 0.01em;
}
.home-sub {
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.75;
  max-width: 640px;
  margin: 0 0 22px;
}
.home-search {
  display: flex;
  gap: 10px;
  align-items: stretch;
}
.home-keyword {
  flex: 1;
  height: 52px;
  padding: 0 18px;
  font-size: 16px;
}
.home-examples {
  margin-top: 14px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 12px;
  color: var(--muted);
  font-size: 13px;
}
.example-chip {
  background: none;
  border: none;
  padding: 2px 2px;
  color: var(--accent-2);
  font-size: 13.5px;
  cursor: pointer;
  border-bottom: 1px solid transparent;
}
.example-chip:hover { border-bottom-color: var(--accent-2); }

.home-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-bottom: 1px solid var(--rule);
}
.home-col {
  padding: 22px 24px 20px;
}
.home-col:first-child {
  padding-left: 0;
  border-right: 1px solid var(--rule-soft);
}
.home-col:last-child { padding-right: 0; }
.home-col-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 12px;
}
.home-col-head h2 {
  font-family: var(--serif);
  font-size: 17px;
  font-weight: 700;
  margin: 0;
}
.home-link { font-size: 13px; color: var(--accent-2); white-space: nowrap; }
.home-hint { color: var(--muted); font-size: 12.5px; line-height: 1.6; margin: 0 0 12px; }
.home-empty {
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.7;
  padding: 14px;
  border: 1px dashed var(--rule);
  border-radius: 10px;
  background: var(--paper-raised);
}
.home-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 2px;
  border-bottom: 1px solid var(--rule-soft);
}
.home-row:last-child { border-bottom: none; }
.home-row-main {
  flex: 1;
  text-align: left;
  background: none;
  border: none;
  font-size: 14.5px;
  color: var(--ink);
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.home-row-main:hover { color: var(--accent-2); text-decoration: underline; }
.home-row-action {
  background: none;
  border: none;
  color: var(--muted);
  font-size: 12.5px;
  cursor: pointer;
  flex-shrink: 0;
}
.home-row-action:hover { color: var(--warn); }

.home-discover { padding: 22px 0 6px; }
.discover-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 11px 2px;
  border-bottom: 1px solid var(--rule-soft);
}
.discover-title {
  flex: 1;
  text-align: left;
  background: none;
  border: none;
  font-size: 14.5px;
  color: var(--ink);
  cursor: pointer;
  line-height: 1.5;
}
.discover-title:hover { color: var(--accent-2); text-decoration: underline; }
.discover-platform {
  flex-shrink: 0;
  color: var(--muted);
  font-size: 12px;
  max-width: 200px;
  text-align: right;
}

/* ============================================================
   研究结果页：当前结论 / 趋势变化 / 关键驱动 / 平台表现 /
   证据 / 机会风险 / 建议 / 操作
   ============================================================ */
.rv-progress {
  height: 2px;
  background: var(--rule-soft);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 18px;
}
.rv-progress > span {
  display: block;
  height: 100%;
  width: 38%;
  background: var(--accent-2);
  animation: rv-indeterminate 1.1s ease-in-out infinite;
}
@keyframes rv-indeterminate {
  0% { transform: translateX(-120%); }
  100% { transform: translateX(360%); }
}

.research-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--rule);
}
.rv-kind {
  font-size: 12.5px;
  color: var(--muted);
  letter-spacing: 0.04em;
  margin-bottom: 6px;
}
.research-title {
  font-family: var(--serif);
  font-size: 28px;
  font-weight: 700;
  line-height: 1.3;
  margin: 0;
  word-break: break-word;
}
.research-head-actions { display: flex; gap: 8px; flex-shrink: 0; flex-wrap: wrap; justify-content: flex-end; }

#rvQuick { margin-top: 14px; }

.rv-section {
  padding: 22px 0;
  border-bottom: 1px solid var(--rule-soft);
}
.rv-section:last-child { border-bottom: none; }
.rv-kicker {
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 12px;
}

/* 当前结论 */
.rv-conclusion {
  font-family: var(--serif);
  font-size: 23px;
  line-height: 1.55;
  margin: 0 0 14px;
  color: var(--ink);
}
.tone-limited .rv-conclusion,
.tone-insufficient .rv-conclusion { color: var(--ink-soft); }
.rv-badges { display: flex; flex-wrap: wrap; gap: 8px; }
.rv-badge {
  font-size: 12.5px;
  line-height: 1;
  padding: 6px 11px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-2);
  white-space: nowrap;
}
.rv-badge.up { background: var(--ok-soft); color: var(--ok); }
.rv-badge.down { background: var(--warn-soft); color: var(--warn); }
.rv-hotlist { color: var(--muted); font-size: 13px; line-height: 1.7; margin: 12px 0 0; }

/* 趋势变化 */
.rv-lead { font-size: 16px; line-height: 1.75; margin: 0 0 12px; }
.rv-curve {
  margin-top: 16px;
  background: var(--paper-raised);
  border: 1px solid var(--rule-soft);
  border-radius: 12px;
  padding: 14px 14px 6px;
}
.rv-cap { color: var(--muted); font-size: 12.5px; line-height: 1.7; margin: 8px 0 0; }
.rv-related { margin-top: 16px; display: grid; gap: 12px; }
.rv-related-label {
  display: block;
  font-size: 12.5px;
  color: var(--muted);
  margin-bottom: 7px;
}
.rv-forecast {
  margin-top: 16px;
  background: var(--paper-sunk);
  border-radius: 12px;
  padding: 14px 16px;
}
.rv-forecast-head { margin-bottom: 8px; font-size: 14px; }

/* 结果列表（驱动 / 机会 / 风险） */
.rv-result-list { display: block; }
.rv-result {
  padding: 11px 0;
  border-bottom: 1px solid var(--rule-soft);
}
.rv-result:last-child { border-bottom: none; }
.rv-result strong { display: block; font-size: 14.5px; font-weight: 650; margin-bottom: 4px; }
.rv-result p { margin: 0; color: var(--ink-soft); font-size: 13.5px; line-height: 1.7; }

/* 平台表现 */
.rv-platform {
  padding: 14px 0;
  border-bottom: 1px solid var(--rule-soft);
}
.rv-platform:last-child { border-bottom: none; }
.rv-platform-head { display: flex; align-items: center; gap: 9px; flex-wrap: wrap; }
.state-dot { width: 9px; height: 9px; border-radius: 50%; flex-shrink: 0; display: inline-block; }
.state-ok .state-dot { background: var(--ok); }
.state-degraded .state-dot { background: var(--warn); }
.state-missing .state-dot { background: var(--missing); }
.rv-platform-name { font-size: 15px; font-weight: 650; }
.rv-platform-family { font-size: 12.5px; color: var(--muted); }
.rv-platform-state { margin-left: auto; font-size: 12.5px; color: var(--muted); }
.state-ok .rv-platform-state { color: var(--ok); }
.state-degraded .rv-platform-state { color: var(--warn); }
.rv-platform-conclusion { margin: 8px 0 0; font-size: 14px; line-height: 1.7; color: var(--ink-soft); }
.rv-platform-ev {
  margin-top: 10px;
  padding: 10px 14px;
  background: var(--paper-raised);
  border-left: 2px solid var(--rule);
  border-radius: 0 8px 8px 0;
}
.state-ok .rv-platform-ev { border-left-color: var(--ok); }
.state-degraded .rv-platform-ev { border-left-color: var(--warn); }

/* 证据 */
.rv-ev-item { padding: 10px 0; border-bottom: 1px solid var(--rule-soft); }
.rv-ev-item:last-child { border-bottom: none; }
.rv-ev-meta { font-size: 12px; color: var(--muted); margin-bottom: 3px; }
.rv-ev-title { font-size: 14px; line-height: 1.6; }

/* 机会 / 风险 两栏 */
.rv-two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid var(--rule-soft);
  border-radius: 12px;
  overflow: hidden;
  background: var(--paper-raised);
}
.rv-col { padding: 16px 18px; }
.rv-col:first-child { border-right: 1px solid var(--rule-soft); }
.rv-col-head {
  font-size: 13px;
  font-weight: 650;
  margin-bottom: 8px;
}
.rv-col-head.up { color: var(--ok); }
.rv-col-head.down { color: var(--warn); }
.rv-col .rv-result { padding: 8px 0; }

/* 建议 / 缺口 / 节点 */
.rv-suggestion {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 13px 0;
  border-bottom: 1px solid var(--rule-soft);
}
.rv-suggestion:last-child { border-bottom: none; }
.rv-suggestion strong { font-size: 14.5px; font-weight: 650; }
.rv-suggestion p { margin: 4px 0 0; font-size: 13.5px; color: var(--ink-soft); line-height: 1.7; }
.rv-priority {
  flex-shrink: 0;
  font-size: 12px;
  padding: 5px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-2);
  white-space: nowrap;
  margin-top: 1px;
}
.rv-priority.priority-now { background: var(--accent); color: #f4f2ec; }
.rv-priority.priority-watch { background: var(--missing-soft); color: var(--muted); }
.rv-upcoming { margin-top: 20px; }
.rv-node {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 0;
  border-bottom: 1px solid var(--rule-soft);
}
.rv-node strong { font-size: 14px; font-weight: 650; }
.rv-node p { margin: 3px 0 0; font-size: 13px; color: var(--ink-soft); }
.rv-node time { flex-shrink: 0; font-size: 12.5px; color: var(--muted); }
.rv-gaps { margin-top: 16px; }
.rv-gaps summary { cursor: pointer; color: var(--muted); font-size: 13px; }
.rv-gap {
  margin-top: 10px;
  padding: 12px 14px;
  background: var(--paper-raised);
  border-radius: 10px;
}
.rv-gap strong { font-size: 13.5px; }
.rv-gap p { margin: 5px 0 0; font-size: 13px; color: var(--ink-soft); line-height: 1.7; }
.rv-gap-next { color: var(--accent-2) !important; }

/* 操作 */
.rv-action-bar { display: flex; flex-wrap: wrap; gap: 9px; }
.rv-data-note {
  margin-top: 16px;
  padding: 13px 16px;
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--muted);
  background: var(--paper-raised);
  border-left: 2px solid var(--rule);
  border-radius: 0 8px 8px 0;
}
.rv-retry { display: flex; gap: 10px; margin-top: 14px; align-items: center; }

/* 骨架 */
.rv-skeleton { display: block; }
.sk-line {
  display: block;
  height: 13px;
  margin: 9px 0;
  border-radius: 5px;
  background: linear-gradient(90deg, var(--rule-soft) 25%, #efede6 37%, var(--rule-soft) 63%);
  background-size: 400% 100%;
  animation: rv-shimmer 1.3s ease-in-out infinite;
}
@keyframes rv-shimmer {
  0% { background-position: 100% 0; }
  100% { background-position: 0 0; }
}

/* ---------- 数据源 / 协作页在纸感下的轻兜底 ---------- */
body.experience-v2 .source-summary .stat,
body.experience-v2 .stat {
  background: var(--paper-raised);
  border: 1px solid var(--rule-soft);
  border-radius: 10px;
}
body.experience-v2 .source-card,
body.experience-v2 .entity-card {
  background: var(--paper-raised);
  border: 1px solid var(--rule-soft);
  border-radius: 10px;
}
body.experience-v2 .source-action.access-zero { color: var(--ok); }
body.experience-v2 .source-action.access-auth { color: var(--warn); }
body.experience-v2 .source-action.access-planned { color: var(--muted); }

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  /* 桌面侧栏收起，导航走顶栏菜单 + 底部抽屉 */
  body.experience-v2 .app { display: block; }
  body.experience-v2 .sidebar { display: none; }
  body.experience-v2 .main { width: 100%; }
  body.experience-v2 .topbar { position: sticky; top: 0; z-index: 40; }
  body.experience-v2 .nav-toggle { display: inline-flex; }
  body.experience-v2 .home-page,
  body.experience-v2 .rv-page { max-width: none; }
  .home-title { font-size: 26px; }
  .home-columns { grid-template-columns: 1fr; }
  .home-col:first-child { border-right: none; border-bottom: 1px solid var(--rule-soft); padding: 20px 0; }
  .home-col:last-child { padding: 20px 0; }
  .rv-two-col { grid-template-columns: 1fr; }
  .rv-col:first-child { border-right: none; border-bottom: 1px solid var(--rule-soft); }
  .research-head { flex-direction: column; }
  .research-head-actions { justify-content: flex-start; flex-wrap: wrap; }
  .research-title { font-size: 23px; }
  .rv-conclusion { font-size: 20px; }
  .home-search { flex-direction: column; }
  .home-search .btn.lg { width: 100%; }
  .rv-action-bar { display: flex; flex-wrap: wrap; }
}