/* ============================================================
   组件
   ============================================================ */

/* —— 顶部 Masthead —— */
.masthead { padding-top: 4px; }
.masthead__inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.masthead__brand { display: flex; align-items: center; gap: 18px; }
.masthead__emblem {
  width: 64px; height: 64px;
  color: var(--seal);
  filter: drop-shadow(0 1px 0 rgba(0,0,0,0.05));
}
.masthead__emblem svg { width: 100%; height: 100%; }
.masthead__title { line-height: 1; }
.masthead__main {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(48px, 7vw, 84px);
  letter-spacing: 0.04em;
  color: var(--ink);
  line-height: 0.95;
}
.masthead__sub {
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--ink-mute);
  text-transform: uppercase;
}
.masthead__meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-align: right;
  color: var(--ink-mute);
  text-transform: uppercase;
  line-height: 1.6;
}
.meta-line { white-space: nowrap; }
.meta-line--small { font-size: 9.5px; color: var(--ink-faint); margin-top: 4px; }

.masthead__rule {
  margin-top: 14px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
  color: var(--ink-mute);
}
.masthead__rule > span:first-child,
.masthead__rule > span:last-child {
  height: 1px; background: currentColor; opacity: 0.5;
}
.masthead__diamond { color: var(--seal); font-size: 12px; }

@media (max-width: 600px) {
  .masthead__main { font-size: 56px; }
  .masthead__meta { text-align: left; font-size: 10px; }
}

/* —— 搜索区 —— */
.search-section {
  margin: 32px 0 28px;
  padding: 28px 28px 24px;
  background:
    linear-gradient(180deg, var(--paper-light), var(--paper) 60%, var(--paper-deep));
  border: 1px solid var(--paper-edge);
  box-shadow: var(--shadow-card);
  position: relative;
}
.search-section::before,
.search-section::after {
  content: "";
  position: absolute; left: 0; right: 0; height: 1px;
  background: var(--ink-faint); opacity: 0.35;
}
.search-section::before { top: 6px; }
.search-section::after  { bottom: 6px; }

.search-section__lead {
  font-family: var(--font-serif);
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
  margin-bottom: 20px;
  max-width: 64ch;
}

.search-form__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.22em;
  color: var(--ink-mute);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.search-form__field {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: stretch;
  background: var(--paper-light);
  border: 1.5px solid var(--ink);
  position: relative;
}
.search-form__prefix {
  display: flex; align-items: center; padding: 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--seal);
  border-right: 1px solid var(--ink-faint);
  background: rgba(0,0,0,0.02);
}
.search-form__input {
  appearance: none; border: 0; outline: 0; background: transparent;
  padding: 16px 18px;
  font-family: var(--font-serif);
  font-size: 18px;
  color: var(--ink);
  width: 100%;
}
.search-form__input::placeholder { color: var(--ink-faint); font-style: italic; }
.search-form__submit {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 0 22px;
  background: var(--ink);
  color: var(--paper-light);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  border-left: 1.5px solid var(--ink);
  transition: background .25s var(--ease), color .25s var(--ease);
}
.search-form__submit:hover { background: var(--seal); }
.search-form__submit-icon { font-size: 14px; }

.search-form__suggest {
  margin-top: 14px;
  display: flex; align-items: center; flex-wrap: wrap; gap: 8px;
}
.search-form__suggest-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--ink-mute);
  text-transform: uppercase;
  margin-right: 4px;
}
.chip {
  display: inline-block;
  padding: 5px 12px 6px;
  font-family: var(--font-serif);
  font-size: 13px;
  color: var(--ink-soft);
  background: transparent;
  border: 1px solid var(--ink-faint);
  border-radius: 999px;
  transition: all .25s var(--ease);
}
.chip:hover {
  color: var(--paper-light);
  background: var(--ink);
  border-color: var(--ink);
}

/* —— 状态区 —— */
.status-section { margin: 20px 0; }
.status {
  text-align: center;
  padding: 60px 24px;
  background: var(--paper-light);
  border: 1px dashed var(--ink-faint);
  position: relative;
}
.status__text {
  font-family: var(--font-serif);
  font-size: 18px;
  color: var(--ink-soft);
}
.status--loading { padding: 80px 24px; }
.status__ink {
  width: 64px; height: 64px;
  margin: 0 auto 24px;
  background: var(--seal);
  -webkit-mask: radial-gradient(circle at 30% 30%, transparent 18%, #000 19%);
          mask: radial-gradient(circle at 30% 30%, transparent 18%, #000 19%);
  border-radius: 50%;
  animation: inkPulse 1.6s var(--ease) infinite;
}
@keyframes inkPulse {
  0%, 100% { transform: scale(0.6); opacity: 0.4; }
  50%      { transform: scale(1);   opacity: 1; }
}

/* —— 结果区 —— */
.results__head {
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--ink);
  margin-bottom: 22px;
  flex-wrap: wrap;
}
.results__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 34px;
  letter-spacing: 0.04em;
  line-height: 1;
}
.results__meta {
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--ink-mute);
  text-transform: uppercase;
}

.sort-control { display: flex; align-items: center; gap: 6px; }
.sort-control__label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--ink-mute);
  text-transform: uppercase;
  margin-right: 6px;
}
.sort-btn {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 6px 12px;
  color: var(--ink-mute);
  border: 1px solid var(--ink-faint);
  border-radius: 999px;
  transition: all .2s var(--ease);
}
.sort-btn:hover { color: var(--ink); border-color: var(--ink); }
.sort-btn.is-active {
  background: var(--ink); color: var(--paper-light); border-color: var(--ink);
}

/* —— 档案卡片列表 —— */
.archive-list {
  display: flex; flex-direction: column; gap: 18px;
  counter-reset: archive;
}
.card {
  position: relative;
  background:
    linear-gradient(180deg, var(--paper-light) 0%, var(--paper) 100%);
  border: 1px solid var(--paper-edge);
  box-shadow: var(--shadow-card);
  opacity: 0;
  transform: translateY(14px);
  animation: cardIn .5s var(--ease) forwards;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease);
}
.card:hover { transform: translateY(-2px); box-shadow: 0 1px 0 rgba(0,0,0,0.04), 0 18px 36px -18px rgba(60,40,10,0.4), 0 3px 6px rgba(60,40,10,0.1); }
@keyframes cardIn {
  to { opacity: 1; transform: translateY(0); }
}

.card__cover {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 0;
  position: relative;
}
.card__rank {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  background: var(--ink);
  color: var(--paper-light);
  font-family: var(--font-mono);
  padding: 18px 8px;
  position: relative;
}
.card__rank-no {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 32px;
  line-height: 1;
  letter-spacing: -0.02em;
}
.card__rank-label {
  margin-top: 6px;
  font-size: 9px;
  letter-spacing: 0.3em;
  opacity: 0.6;
}
.card--top .card__rank { background: var(--seal); }
.card--top .card__rank::after {
  content: "今日最被遗忘的角落";
  position: absolute; bottom: -22px; left: 50%; transform: translateX(-50%) rotate(-3deg);
  background: var(--seal);
  color: var(--paper-light);
  font-size: 10px;
  letter-spacing: 0.18em;
  padding: 3px 10px;
  white-space: nowrap;
  font-family: var(--font-mono);
  box-shadow: 0 2px 0 rgba(0,0,0,0.15);
}
.card--bottom .card__rank { background: var(--gold-deep); }
.card--bottom .card__rank::after {
  content: "流 量 集 散";
  position: absolute; bottom: -22px; left: 50%; transform: translateX(-50%) rotate(2deg);
  background: var(--gold-deep);
  color: var(--paper-light);
  font-size: 10px;
  letter-spacing: 0.18em;
  padding: 3px 10px;
  white-space: nowrap;
  font-family: var(--font-mono);
  box-shadow: 0 2px 0 rgba(0,0,0,0.15);
}

.card__seal {
  position: absolute;
  top: 14px; right: 14px;
  width: 40px; height: 40px;
  color: var(--seal);
  opacity: 0.18;
  transition: opacity .35s var(--ease), transform .35s var(--ease);
}
.card:hover .card__seal { opacity: 0.9; transform: rotate(-12deg) scale(1.05); }
.card__seal svg { width: 100%; height: 100%; }

.card__body { padding: 18px 22px 16px 24px; min-width: 0; }
.card__title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 22px;
  line-height: 1.25;
  color: var(--ink);
  margin-bottom: 6px;
  letter-spacing: 0.01em;
}
.card__snippet {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 14px;
}

.card__metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  padding: 12px 0;
  border-top: 1px dashed var(--ink-faint);
  border-bottom: 1px dashed var(--ink-faint);
}
.metric { display: flex; flex-direction: column; gap: 4px; }
.metric__label {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.22em;
  color: var(--ink-mute);
  text-transform: uppercase;
}
.metric__value {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1;
}
.metric__value--views { color: var(--gold-deep); }
.metric__value--click { color: var(--seal); }
.metric__value--score { color: var(--ink); }
.metric__bar {
  display: block;
  height: 4px;
  background: rgba(0,0,0,0.08);
  position: relative;
  margin-top: 4px;
  overflow: hidden;
}
.metric__bar-fill {
  position: absolute; top: 0; left: 0; bottom: 0;
  background: var(--seal);
  width: 0%;
  transition: width .8s var(--ease);
}

.card__foot {
  display: flex; align-items: center; justify-content: space-between;
  margin-top: 12px;
}
.card__toggle {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-soft);
  padding: 6px 0;
  border-bottom: 1px solid var(--ink-faint);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.card__toggle:hover { color: var(--seal); border-color: var(--seal); }
.card__toggle[aria-expanded="true"] .card__toggle-icon { transform: rotate(180deg); }
.card__toggle-icon { transition: transform .3s var(--ease); }
.card__source {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--ink-mute);
  text-transform: uppercase;
  border-bottom: 1px dashed var(--ink-faint);
  padding-bottom: 1px;
}
.card__source:hover { color: var(--seal); border-color: var(--seal); }

.card__detail {
  grid-column: 1 / -1;
  border-top: 1px solid var(--ink-faint);
  background:
    repeating-linear-gradient(0deg, transparent 0 23px, rgba(120,90,40,0.08) 23px 24px),
    var(--paper-light);
  overflow: hidden;
  max-height: 0;
  transition: max-height .5s var(--ease);
}
.card__detail.is-open { max-height: 600px; }
.card__detail-inner { padding: 22px 28px 24px; }
.card__detail-loading {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-mute);
  letter-spacing: 0.16em;
}
.card__detail-extract {
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-soft);
  margin-bottom: 18px;
  text-indent: 2em;
}
.card__detail-meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  padding-top: 12px;
  border-top: 1px dashed var(--ink-faint);
}
.card__detail-meta dt {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.2em;
  color: var(--ink-mute);
  text-transform: uppercase;
  margin-bottom: 4px;
}
.card__detail-meta dd {
  font-family: var(--font-serif);
  font-size: 13px;
  color: var(--ink);
  line-height: 1.5;
}

@media (max-width: 600px) {
  .card__cover { grid-template-columns: 70px 1fr; }
  .card__rank-no { font-size: 24px; }
  .card__title { font-size: 18px; }
  .card__metrics { grid-template-columns: 1fr 1fr; gap: 12px; }
  .card__detail-meta { grid-template-columns: 1fr; gap: 10px; }
  .card__seal { width: 32px; height: 32px; }
}

/* —— 侧栏历史 —— */
.sidebar__inner {
  background: var(--paper-light);
  border: 1px solid var(--paper-edge);
  padding: 16px 16px 12px;
  box-shadow: var(--shadow-soft);
  position: relative;
}
.sidebar__inner::before {
  content: ""; position: absolute; top: 6px; left: 6px; right: 6px; bottom: 6px;
  border: 1px solid var(--ink-faint); pointer-events: none; opacity: 0.5;
}
.sidebar__head {
  display: flex; align-items: center; gap: 8px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--ink-faint);
  margin-bottom: 10px;
  position: relative;
}
.sidebar__head-icon { color: var(--seal); font-size: 16px; }
.sidebar__head-title {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.06em;
  flex: 1;
}
.sidebar__clear {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--ink-mute);
  text-transform: uppercase;
  padding: 2px 6px;
  border: 1px solid transparent;
}
.sidebar__clear:hover { color: var(--seal); border-color: var(--seal); }

.sidebar__list { display: flex; flex-direction: column; gap: 4px; }
.sidebar__item {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 6px;
  font-family: var(--font-serif);
  font-size: 13px;
  color: var(--ink-soft);
  cursor: pointer;
  border-bottom: 1px dashed transparent;
  transition: all .2s var(--ease);
  position: relative;
}
.sidebar__item:hover { color: var(--seal); border-bottom-color: var(--ink-faint); padding-left: 10px; }
.sidebar__item-no {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--ink-faint);
  letter-spacing: 0.1em;
  min-width: 24px;
}
.sidebar__empty {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--ink-faint);
  text-align: center;
  padding: 14px 0;
}

/* —— 底部 —— */
.colophon {
  margin-top: 60px;
  padding: 28px 0 32px;
  border-top: 1px solid var(--ink-faint);
  text-align: center;
}
.colophon__line {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--ink-mute);
  text-transform: uppercase;
}
.colophon__line--small {
  margin-top: 8px;
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--ink-faint);
  text-transform: none;
  font-style: italic;
}
.colophon a { border-bottom: 1px dashed var(--ink-faint); }
.colophon a:hover { color: var(--seal); border-color: var(--seal); }

/* —— 按钮 —— */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  border: 1px solid var(--ink);
  color: var(--ink);
  background: transparent;
  transition: all .2s var(--ease);
  margin-top: 14px;
}
.btn:hover { background: var(--ink); color: var(--paper-light); }
.btn--ghost { border-color: var(--ink-faint); }