.page-news {
  background: var(--yk-sand);
}

/* ============ 首屏 ============ */
.page-news .news-hero {
  position: relative;
  overflow: hidden;
  background: var(--yk-deep);
  color: var(--yk-paper);
  padding: clamp(20px, 4vw, 36px) 0 clamp(48px, 9vw, 88px);
}

.page-news .news-hero::before {
  content: "";
  position: absolute;
  top: -45%;
  right: -30%;
  width: 82%;
  height: 190%;
  background: var(--yk-teal);
  transform: rotate(-11deg);
  opacity: 0.55;
  pointer-events: none;
}

.page-news .news-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 6px;
  background: repeating-linear-gradient(90deg, var(--yk-orange) 0 20px, transparent 20px 40px);
  pointer-events: none;
}

.page-news .news-hero__inner {
  position: relative;
  z-index: 1;
}

.page-news .news-hero__crumb {
  margin-bottom: 24px;
}

.page-news .news-hero__crumb .yk-breadcrumb__link,
.page-news .news-hero__crumb .yk-breadcrumb__item {
  font-family: var(--yk-font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--yk-mint);
}

.page-news .news-hero__crumb .yk-breadcrumb__link:hover {
  color: var(--yk-orange);
}

.page-news .news-hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--yk-font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--yk-orange);
}

.page-news .news-hero__kicker::before {
  content: "";
  width: 26px;
  height: 3px;
  background: var(--yk-orange);
}

.page-news .news-hero__title {
  margin: 16px 0 0;
  font-family: var(--yk-font-head);
  font-weight: 900;
  font-size: clamp(30px, 7vw, 72px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  max-width: 17em;
}

.page-news .news-hero__lede {
  margin: 22px 0 0;
  max-width: 36em;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(251, 247, 239, 0.86);
}

.page-news .news-hero__meta {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 28px 0 0;
  padding: 0;
}

.page-news .news-hero__meta li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 12px;
  border: 2px solid rgba(216, 232, 228, 0.35);
  font-size: 13px;
  line-height: 1.5;
}

.page-news .news-hero__meta-k {
  font-family: var(--yk-font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--yk-orange);
}

/* ============ 本期速览 ============ */
.page-news .news-brief {
  background: var(--yk-sand);
  padding: clamp(36px, 7vw, 76px) 0;
}

.page-news .news-brief__grid {
  display: grid;
  gap: 28px;
}

.page-news .news-brief__head .yk-h2 {
  margin: 10px 0 0;
}

.page-news .news-brief__note {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--yk-gray);
  max-width: 26em;
}

.page-news .news-brief__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 2px solid var(--yk-ink);
}

.page-news .news-brief__item {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 4px 14px;
  padding: 16px 10px 16px 12px;
  border-bottom: 1px solid var(--yk-line);
  border-left: 3px solid transparent;
  transition: border-color 0.16s var(--yk-ease), background 0.16s var(--yk-ease);
}

.page-news .news-brief__item:hover {
  border-left-color: var(--yk-orange);
  background: var(--yk-paper);
}

.page-news .news-brief__num {
  grid-row: 1 / span 3;
  font-family: var(--yk-font-mono);
  font-size: 13px;
  color: var(--yk-teal);
  padding-top: 2px;
}

.page-news .news-brief__time {
  grid-column: 2;
  font-family: var(--yk-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--yk-green);
}

.page-news .news-brief__text {
  grid-column: 2;
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--yk-ink);
}

.page-news .news-brief__cat {
  grid-column: 2;
  font-family: var(--yk-font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--yk-gray);
}

/* ============ 笔记流 ============ */
.page-news .news-stream {
  background: var(--yk-paper);
  border-top: 3px solid var(--yk-ink);
  border-bottom: 3px solid var(--yk-ink);
  padding: clamp(36px, 7vw, 80px) 0 clamp(40px, 8vw, 88px);
}

.page-news .news-stream__inner {
  position: relative;
}

.page-news .news-stream__head .yk-h2 {
  margin: 10px 0 0;
}

.page-news .news-filter__input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-news .news-filter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 24px 0 8px;
  padding: 12px;
  border: 2px solid var(--yk-ink);
  background: var(--yk-sand);
}

.page-news .news-filter:focus-within {
  outline: 2px solid var(--yk-orange);
  outline-offset: 3px;
}

.page-news .news-filter__hint {
  font-family: var(--yk-font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--yk-gray);
  padding-right: 6px;
}

.page-news .news-filter__chip {
  cursor: pointer;
  padding: 6px 12px;
  border: 2px solid var(--yk-line);
  background: var(--yk-paper);
  font-family: var(--yk-font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--yk-ink);
  transition: background 0.14s var(--yk-ease), border-color 0.14s var(--yk-ease), color 0.14s var(--yk-ease);
}

.page-news .news-filter__chip:hover {
  border-color: var(--yk-teal);
  color: var(--yk-teal);
}

.page-news #nf-all:checked ~ .news-filter label[for="nf-all"],
.page-news #nf-pre:checked ~ .news-filter label[for="nf-pre"],
.page-news #nf-ven:checked ~ .news-filter label[for="nf-ven"],
.page-news #nf-sta:checked ~ .news-filter label[for="nf-sta"],
.page-news #nf-ver:checked ~ .news-filter label[for="nf-ver"],
.page-news #nf-use:checked ~ .news-filter label[for="nf-use"] {
  background: var(--yk-orange);
  border-color: var(--yk-ink);
  color: var(--yk-ink);
  font-weight: 700;
}

.page-news #nf-pre:checked ~ .news-list > [data-cat]:not([data-cat~="pre"]),
.page-news #nf-ven:checked ~ .news-list > [data-cat]:not([data-cat~="ven"]),
.page-news #nf-sta:checked ~ .news-list > [data-cat]:not([data-cat~="sta"]),
.page-news #nf-ver:checked ~ .news-list > [data-cat]:not([data-cat~="ver"]),
.page-news #nf-use:checked ~ .news-list > [data-cat]:not([data-cat~="use"]) {
  display: none;
}

.page-news .news-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  margin-top: 26px;
}

.page-news .news-group {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 14px 0 0;
  padding-bottom: 10px;
  border-bottom: 3px solid var(--yk-ink);
  font-family: var(--yk-font-head);
  font-weight: 700;
  font-size: clamp(19px, 3vw, 26px);
  letter-spacing: 0.01em;
  color: var(--yk-ink);
}

.page-news .news-group__num {
  font-family: var(--yk-font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--yk-orange);
  padding: 2px 6px;
  border: 2px solid var(--yk-orange);
}

/* 卡片 */
.page-news .news-card {
  position: relative;
  background: var(--yk-paper);
  border: 2px solid var(--yk-ink);
  box-shadow: 6px 6px 0 var(--yk-teal);
  padding: 18px;
  transition: transform 0.16s var(--yk-ease), box-shadow 0.16s var(--yk-ease);
}

.page-news .news-card:hover {
  transform: translate(-2px, -2px);
  box-shadow: 9px 9px 0 var(--yk-orange);
}

.page-news .news-card--lead {
  background: var(--yk-mint);
  box-shadow: 8px 8px 0 var(--yk-orange);
}

.page-news .news-card__figure {
  margin: 0 0 16px;
  border: 2px solid var(--yk-ink);
  overflow: hidden;
  background: var(--yk-mint);
}

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

.page-news .news-card--lead .news-card__figure img {
  aspect-ratio: 16 / 9;
}

.page-news .news-card__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  margin-bottom: 10px;
}

.page-news .news-card__cat {
  font-family: var(--yk-font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  padding: 3px 8px;
  border: 1px solid var(--yk-teal);
  color: var(--yk-teal);
  background: transparent;
}

.page-news .news-card__time {
  font-family: var(--yk-font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--yk-gray);
}

.page-news .news-card__title {
  margin: 0;
}

.page-news .news-card__hook {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--yk-ink);
}

.page-news .news-card__more {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--yk-line);
}

.page-news .news-card__more summary {
  cursor: pointer;
  list-style: none;
  font-family: var(--yk-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--yk-teal);
}

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

.page-news .news-card__more summary::before {
  content: "▸ ";
  color: var(--yk-orange);
}

.page-news .news-card__more[open] summary::before {
  content: "▾ ";
}

.page-news .news-card__more summary:hover {
  color: var(--yk-orange);
}

.page-news .news-card__more p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--yk-ink);
}

/* 技术对比横带卡 */
.page-news .news-card--band {
  background: var(--yk-deep);
  color: var(--yk-paper);
  box-shadow: 8px 8px 0 var(--yk-orange);
}

.page-news .news-card--band .news-card__figure {
  border-color: var(--yk-paper);
  margin-bottom: 16px;
}

.page-news .news-card--band .news-card__title,
.page-news .news-card--band .news-card__hook,
.page-news .news-card--band .news-card__more p {
  color: var(--yk-paper);
}

.page-news .news-card--band .news-card__cat {
  color: var(--yk-orange);
  border-color: var(--yk-orange);
}

.page-news .news-card--band .news-card__time {
  color: var(--yk-mint);
}

.page-news .news-card--band .news-card__more {
  border-top-color: rgba(216, 232, 228, 0.35);
}

.page-news .news-card--band .news-card__more summary {
  color: var(--yk-mint);
}

/* ============ 窄幅信息带 ============ */
.page-news .news-band {
  background: var(--yk-teal);
}

.page-news .news-band__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  padding-top: 18px;
  padding-bottom: 18px;
}

.page-news .news-band__pin {
  flex: none;
}

.page-news .news-band__text {
  flex: 1 1 220px;
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--yk-paper);
}

.page-news .news-band__btn {
  flex: none;
}

/* ============ 版本日志 ============ */
.page-news .news-log {
  background: var(--yk-sand);
  padding: clamp(36px, 7vw, 76px) 0;
}

.page-news .news-log__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 28px;
}

.page-news .news-log__head .yk-h2 {
  margin: 10px 0 0;
}

.page-news .news-log__ticks {
  width: 180px;
  height: auto;
  color: var(--yk-teal);
  flex: none;
}

.page-news .news-log__list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 22px;
}

.page-news .news-log__item {
  position: relative;
  padding: 0 0 26px 18px;
  border-left: 2px solid var(--yk-line);
  scroll-margin-top: 90px;
}

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

.page-news .news-log__item::before {
  content: "";
  position: absolute;
  left: -8px;
  top: 6px;
  width: 12px;
  height: 12px;
  background: var(--yk-orange);
  border: 2px solid var(--yk-ink);
  border-radius: 50%;
}

.page-news .news-log__time {
  display: inline-block;
  font-family: var(--yk-font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--yk-green);
  margin-bottom: 6px;
}

.page-news .news-log__title {
  margin: 0;
}

.page-news .news-log__text {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--yk-ink);
  max-width: 40em;
}

.page-news .news-log__jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 30px;
  padding-top: 18px;
  border-top: 2px solid var(--yk-ink);
}

.page-news .news-log__jump-link {
  font-family: var(--yk-font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  padding: 7px 12px;
  border: 2px solid var(--yk-ink);
  color: var(--yk-ink);
  text-decoration: none;
  background: var(--yk-paper);
  transition: background 0.14s var(--yk-ease), color 0.14s var(--yk-ease), transform 0.14s var(--yk-ease);
}

.page-news .news-log__jump-link:hover,
.page-news .news-log__jump-link:focus-visible {
  background: var(--yk-orange);
  transform: translate(-1px, -1px);
}

/* ============ 收束区 ============ */
.page-news .news-next {
  background: var(--yk-deep);
  color: var(--yk-paper);
  padding: clamp(36px, 7vw, 76px) 0;
  border-top: 3px solid var(--yk-ink);
}

.page-news .news-next__grid {
  display: grid;
  gap: 30px;
}

.page-news .news-next__main .yk-h2 {
  margin: 10px 0 0;
  color: var(--yk-paper);
}

.page-news .news-next__text {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(251, 247, 239, 0.82);
  max-width: 34em;
}

.page-news .news-next__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-news .news-next__link {
  display: block;
  padding: 14px 16px;
  border: 2px solid rgba(216, 232, 228, 0.35);
  color: var(--yk-paper);
  text-decoration: none;
  transition: background 0.14s var(--yk-ease), border-color 0.14s var(--yk-ease), transform 0.14s var(--yk-ease);
}

.page-news .news-next__link:hover,
.page-news .news-next__link:focus-visible {
  background: var(--yk-teal);
  border-color: var(--yk-orange);
  transform: translateX(3px);
}

.page-news .news-next__link-k {
  display: block;
  font-family: var(--yk-font-head);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.02em;
}

.page-news .news-next__link-v {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--yk-mint);
}

/* ============ 断点 ============ */
@media (min-width: 720px) {
  .page-news .news-hero__lede {
    font-size: 17px;
  }

  .page-news .news-brief__item {
    grid-template-columns: 34px 1fr auto;
    align-items: baseline;
  }

  .page-news .news-brief__num {
    grid-row: 1 / span 3;
  }

  .page-news .news-brief__cat {
    grid-column: 3;
    grid-row: 1;
    text-align: right;
  }

  .page-news .news-card--band .news-card__figure img {
    aspect-ratio: 2 / 1;
  }
}

@media (min-width: 900px) {
  .page-news .news-brief__grid {
    grid-template-columns: 4fr 7fr;
    gap: 56px;
    align-items: start;
  }

  .page-news .news-brief__head {
    position: sticky;
    top: 96px;
  }

  .page-news .news-list {
    grid-template-columns: repeat(12, 1fr);
    gap: 26px 28px;
    align-items: start;
  }

  .page-news .news-group {
    grid-column: 1 / -1;
    margin-top: 18px;
  }

  .page-news .news-card--lead {
    grid-column: 1 / -1;
  }

  .page-news .news-card--lead .news-card__body {
    display: grid;
    grid-template-columns: 1fr;
  }

  .page-news .news-card--a {
    grid-column: 1 / span 7;
  }

  .page-news .news-card--b {
    grid-column: 8 / span 5;
    margin-top: 46px;
  }

  .page-news .news-card--c {
    grid-column: 2 / span 5;
  }

  .page-news .news-card--d {
    grid-column: 7 / span 6;
    margin-top: 34px;
  }

  .page-news .news-card--band {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: 7fr 5fr;
    gap: 26px;
    align-items: center;
  }

  .page-news .news-card--band .news-card__figure {
    margin-bottom: 0;
  }

  .page-news .news-card--band .news-card__figure img {
    aspect-ratio: 16 / 10;
  }

  .page-news .news-next__grid {
    grid-template-columns: 5fr 6fr;
    gap: 56px;
    align-items: start;
  }

  .page-news .news-next__links {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-news .news-log__ticks {
    width: 240px;
  }
}

@media (min-width: 1100px) {
  .page-news .news-hero__title {
    max-width: 15em;
  }

  .page-news .news-card--a {
    grid-column: 1 / span 6;
  }

  .page-news .news-card--b {
    grid-column: 8 / span 5;
  }

  .page-news .news-card--c {
    grid-column: 2 / span 5;
  }

  .page-news .news-card--d {
    grid-column: 8 / span 5;
    margin-top: 42px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-card,
  .page-news .news-next__link,
  .page-news .news-log__jump-link,
  .page-news .news-brief__item {
    transition: none;
  }

  .page-news .news-card:hover,
  .page-news .news-next__link:hover,
  .page-news .news-log__jump-link:hover {
    transform: none;
  }
}