/* ============================================================
   行业观察 / insights —— 页面专属样式
   作用域：.page-news
   ============================================================ */

.page-news {
  --news-ink: #0A1E3F;
  --news-body: #35496B;
  --news-ink-dim: #5B6E8C;
  --news-tint: rgba(10, 30, 63, 0.07);
  --news-shadow: 0 20px 42px rgba(6, 19, 42, 0.38);
}

/* ---------- 栏目头：框景式首屏 ---------- */

.page-news .news-hero {
  position: relative;
  overflow: hidden;
  background: var(--bg-deep);
  border-bottom: 1px solid var(--line);
}

.page-news .news-hero__backdrop {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-news .news-hero__backdrop img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.52;
}

.page-news .news-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    radial-gradient(130% 90% at 8% 4%, rgba(19, 44, 87, 0.35), transparent 62%),
    linear-gradient(180deg, rgba(6, 19, 42, 0.6) 0%, rgba(6, 19, 42, 0.95) 84%);
  pointer-events: none;
}

.page-news .news-hero__inner {
  position: relative;
  z-index: 2;
  padding-block: clamp(1.75rem, 5vw, 3rem) clamp(2.75rem, 7vw, 5rem);
}

.page-news .news-hero .crumbs {
  margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
}

.page-news .news-hero h1 {
  max-width: 20ch;
  margin-top: 0.75rem;
}

.page-news .news-hero__lede {
  max-width: 46ch;
  margin-top: clamp(1rem, 2.5vw, 1.5rem);
}

.page-news .news-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: clamp(1.5rem, 3.5vw, 2.25rem);
}

.page-news .meta-chip {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  padding: 0.35rem 0.8rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--fg-soft);
  background: rgba(19, 44, 87, 0.55);
}

/* ---------- 精选专题：酒红到靛蓝的横向带 ---------- */

.page-news .news-series .section-head {
  margin-bottom: clamp(1.5rem, 3.5vw, 2.25rem);
}

.page-news .news-series__band {
  position: relative;
  overflow: hidden;
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
  padding: clamp(1.25rem, 4vw, 2.75rem);
  border-radius: var(--radius-l);
  border: 1px solid rgba(216, 182, 121, 0.24);
  background: linear-gradient(140deg, var(--wine) 0%, var(--indigo-midnight) 56%, var(--indigo-abyss) 100%);
}

.page-news .news-series__band::after {
  content: "";
  position: absolute;
  right: -10%;
  bottom: -48%;
  width: 55%;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(47, 208, 196, 0.22), transparent 68%);
  pointer-events: none;
}

.page-news .news-series__steps {
  position: relative;
  z-index: 1;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(0.9rem, 2.2vw, 1.4rem);
}

.page-news .news-series__step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.9rem;
  padding-bottom: clamp(0.9rem, 2.2vw, 1.4rem);
  border-bottom: 1px solid rgba(245, 242, 234, 0.14);
}

.page-news .news-series__step:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-news .news-series__num {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--brass);
}

.page-news .news-series__step h3 {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: clamp(1rem, 2vw, 1.16rem);
  font-weight: 800;
  line-height: 1.45;
  letter-spacing: -0.01em;
  color: var(--pearl);
}

.page-news .news-series__step p {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.74;
  color: var(--fg-soft);
}

.page-news .news-series__media {
  position: relative;
  z-index: 1;
  margin: 0;
  border-radius: var(--radius-m);
  overflow: hidden;
  border: 1px solid rgba(245, 242, 234, 0.16);
}

.page-news .news-series__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

/* ---------- 条目流：宽窄交替的错落节奏 ---------- */

.page-news .news-stream {
  background: linear-gradient(180deg, var(--indigo-abyss) 0%, var(--indigo-midnight) 100%);
  border-top: 1px solid var(--line);
}

.page-news .news-stream__head {
  display: grid;
  gap: 0.6rem;
}

.page-news .news-stream__head h2 {
  margin: 0;
}

.page-news .news-stream__filter {
  position: sticky;
  top: 4.5rem;
  z-index: 3;
  margin-top: clamp(1.25rem, 3vw, 1.75rem);
  padding-block: 0.7rem;
  background: var(--indigo-abyss);
  border-bottom: 1px solid var(--line);
}

.page-news .news-stream__filter .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.page-news .news-stream__filter .filter-chip {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.05em;
  padding: 0.45rem 0.95rem;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--fg-soft);
  cursor: pointer;
  transition: background var(--dur) var(--ease-out),
    color var(--dur) var(--ease-out),
    border-color var(--dur) var(--ease-out);
}

.page-news .news-stream__filter .filter-chip:hover {
  border-color: var(--coral);
  color: var(--pearl);
}

.page-news .news-stream__filter .filter-chip[aria-pressed="true"] {
  background: var(--pearl);
  color: var(--indigo-abyss);
  border-color: var(--coral);
  box-shadow: 0 0 0 1px var(--coral);
}

.page-news .news-stream__filter .filter-chip[aria-pressed="true"]:hover {
  color: var(--indigo-abyss);
}

.page-news .news-stream__list {
  list-style: none;
  margin: clamp(1.5rem, 4vw, 2.5rem) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1rem, 2.4vw, 1.6rem);
}

.page-news .news-item {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  padding: clamp(1.1rem, 2.6vw, 1.6rem);
  border-radius: var(--radius-m);
  border: 1px solid transparent;
  background: var(--pearl);
  color: var(--news-ink);
  transition: transform var(--dur) var(--ease-out),
    box-shadow var(--dur) var(--ease-out),
    border-color var(--dur) var(--ease-out);
}

.page-news .news-item[hidden] {
  display: none;
}

.page-news .news-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: clamp(1.1rem, 2.6vw, 1.6rem);
  width: 42px;
  height: 6px;
  border-radius: 0 0 4px 4px;
  background: var(--coral);
}

.page-news .news-item[data-category~="logistics"]::before {
  background: var(--signal-teal);
}

.page-news .news-item[data-category~="partner"]::before {
  background: var(--brass);
}

.page-news .news-item[data-category~="starter"]::before {
  background: var(--wine);
}

.page-news .news-item:hover,
.page-news .news-item:focus-within {
  transform: translateY(-4px);
  box-shadow: var(--news-shadow);
  border-color: rgba(216, 182, 121, 0.55);
}

.page-news .news-item__meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.6rem;
  padding-top: 0.35rem;
}

.page-news .news-tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  background: var(--news-tint);
  color: var(--news-ink);
}

.page-news .news-tag--model {
  background: rgba(255, 107, 74, 0.16);
  color: #A0381F;
}

.page-news .news-tag--logistics {
  background: rgba(47, 208, 196, 0.2);
  color: #0A625C;
}

.page-news .news-tag--partner {
  background: rgba(216, 182, 121, 0.3);
  color: #6E5020;
}

.page-news .news-tag--starter {
  background: rgba(91, 42, 74, 0.14);
  color: var(--wine);
}

.page-news .news-item__stamp {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  color: var(--news-ink-dim);
}

.page-news .news-item__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 2.1vw, 1.28rem);
  font-weight: 800;
  line-height: 1.42;
  letter-spacing: -0.01em;
  color: var(--news-ink);
}

.page-news .news-item__text {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.74;
  color: var(--news-body);
}

.page-news .news-item__thumb {
  margin: 0.15rem 0 0.1rem;
  border-radius: var(--radius-s);
  overflow: hidden;
  background: var(--indigo-midnight);
}

.page-news .news-item__thumb img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}

/* ---------- 常读内容 ---------- */

.page-news .news-picks .section-head {
  margin-bottom: clamp(1.5rem, 3.5vw, 2.25rem);
}

.page-news .news-picks__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1rem, 2.4vw, 1.5rem);
}

.page-news .news-pick {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  padding: clamp(1.1rem, 2.6vw, 1.6rem);
  border-radius: var(--radius-m);
  border: 1px solid var(--line-strong);
  background: linear-gradient(165deg, rgba(19, 44, 87, 0.92), rgba(10, 30, 63, 0.92));
  color: var(--pearl);
  text-decoration: none;
  transition: transform var(--dur) var(--ease-out),
    border-color var(--dur) var(--ease-out);
}

.page-news .news-pick:hover,
.page-news .news-pick:focus-visible {
  transform: translateY(-4px);
  border-color: var(--coral);
}

.page-news .news-pick__num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--brass);
}

.page-news .news-pick__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.12rem;
  font-weight: 800;
  line-height: 1.42;
  color: var(--pearl);
}

.page-news .news-pick__text {
  flex: 1;
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.74;
  color: var(--fg-soft);
}

.page-news .news-pick__go {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--coral);
}

/* ---------- 合作线索 ---------- */

.page-news .news-invite__panel {
  display: grid;
  gap: clamp(1.25rem, 3vw, 2rem);
  padding: clamp(1.4rem, 4vw, 2.75rem);
  border-radius: var(--radius-l);
  border: 1px solid rgba(216, 182, 121, 0.26);
  background: linear-gradient(120deg, var(--wine) 0%, var(--indigo-abyss) 72%);
}

.page-news .news-invite__panel h2 {
  margin: 0.7rem 0 0;
}

.page-news .news-invite__panel .prose {
  margin-top: 1rem;
}

/* ---------- 桌面端 ---------- */

@media (min-width: 900px) {
  .page-news .news-series__band {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    align-items: center;
  }

  .page-news .news-stream__list {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    align-items: start;
  }

  .page-news .news-item--wide {
    grid-column: 1 / span 7;
  }

  .page-news .news-item--narrow {
    grid-column: 8 / span 5;
    margin-top: 1rem;
  }

  .page-news .news-item--wide .news-item__text {
    max-width: 54ch;
  }
}

@media (min-width: 760px) {
  .page-news .news-picks__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-news .news-invite__panel {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (max-width: 640px) {
  .page-news .news-stream__filter {
    top: 3.75rem;
  }

  .page-news .news-item::before {
    width: 34px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-item,
  .page-news .news-pick {
    transition: none;
  }
}