/* ===== 核心能力页 · page-features ===== */

.page-features {
  padding-bottom: var(--section-y);
}

@media (min-width: 1040px) {
  .page-features {
    padding-left: var(--rail-w);
  }
}

.page-features img {
  max-width: 100%;
  height: auto;
}

.page-features a:focus-visible {
  outline: calc(var(--border-thin) * 2) solid var(--color-focus);
  outline-offset: 2px;
}

/* ---------- 首屏 ---------- */

.page-features .feat-hero {
  padding: var(--space-6) 0 var(--section-y);
}

.page-features .feat-eyebrow {
  margin-top: var(--space-6);
  margin-bottom: 0;
}

.page-features .feat-hero-title {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-display);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
  margin: var(--space-2) 0 0;
}

.page-features .feat-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-8);
}

@media (min-width: 900px) {
  .page-features .feat-hero-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: var(--space-8);
    align-items: start;
  }
}

.page-features .feat-hero-copy {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  min-width: 0;
}

.page-features .feat-hero-lede {
  margin: 0;
  color: var(--color-ink-soft);
  max-width: 38ch;
}

.page-features .feat-index {
  list-style: none;
  margin: 0;
  padding: var(--space-3) 0 0;
  border-top: var(--border-thin) solid var(--color-line);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.page-features .feat-index li:nth-child(1) { margin-left: 0; }
.page-features .feat-index li:nth-child(2) { margin-left: var(--space-1); }
.page-features .feat-index li:nth-child(3) { margin-left: calc(var(--space-1) * 2); }
.page-features .feat-index li:nth-child(4) { margin-left: calc(var(--space-1) * 3); }
.page-features .feat-index li:nth-child(5) { margin-left: calc(var(--space-1) * 4); }
.page-features .feat-index li:nth-child(6) { margin-left: calc(var(--space-1) * 5); }
.page-features .feat-index li:nth-child(7) { margin-left: calc(var(--space-1) * 6); }

.page-features .feat-index a {
  display: inline-flex;
  align-items: baseline;
  gap: var(--space-2);
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-ink-soft);
  text-decoration: none;
  border-bottom: var(--border-thin) solid transparent;
  transition: color 200ms var(--ease), border-color 200ms var(--ease);
}

.page-features .feat-index a:hover {
  color: var(--color-ink);
  border-bottom-color: var(--color-primary);
}

.page-features .feat-index .idx-num {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

.page-features .feat-hero-side {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  min-width: 0;
}

.page-features .feat-hero-figure {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.page-features .feat-hero-media {
  aspect-ratio: 880 / 1040;
  max-height: 620px;
  overflow: hidden;
  border-radius: var(--radius-md);
  background: var(--color-surface-deep);
}

.page-features .feat-hero-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-features .feat-hero-figure .media-caption {
  color: var(--color-ink-muted);
  font-size: var(--text-xs);
  line-height: 1.8;
}

.page-features .feat-vitals {
  list-style: none;
  margin: 0;
  padding: var(--space-4) 0 0;
  border-top: var(--border-thin) solid var(--color-line);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-2);
}

.page-features .feat-vitals .figure {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  min-width: 0;
}

.page-features .feat-vitals .figure-head {
  display: flex;
  align-items: baseline;
  gap: 2px;
}

.page-features .feat-vitals .figure-value {
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--color-ink);
}

.page-features .feat-vitals .figure-unit {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-features .feat-vitals .figure-label {
  font-size: var(--text-xs);
  line-height: 1.7;
  color: var(--color-ink-soft);
}

.page-features .feat-vitals .figure--primary .figure-value {
  color: var(--color-primary);
}

/* ---------- 能力区块 ---------- */

.page-features .feat-block {
  padding: var(--space-8) 0;
}

@media (min-width: 900px) {
  .page-features .feat-block {
    padding: var(--section-y) 0;
  }
}

.page-features .feat-block--paper { background: var(--color-surface); }
.page-features .feat-block--wash { background: var(--color-surface-alt); }
.page-features .feat-block--deep { background: var(--color-surface-deep); }

.page-features .feat-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-4);
}

@media (min-width: 900px) {
  .page-features .feat-item {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: var(--space-8);
    align-items: start;
  }
}

.page-features .feat-item-side {
  min-width: 0;
  padding: var(--space-3);
  border-radius: var(--radius-md);
  transition: background-color 240ms var(--ease);
}

.page-features .feat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-2xl);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--color-ink-soft);
  transition: color 240ms var(--ease);
}

.page-features .feat-name {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-2xl);
  line-height: var(--leading-heading);
  color: var(--color-ink);
  margin: var(--space-2) 0 var(--space-2);
  transition: color 240ms var(--ease);
}

.page-features .feat-audience {
  margin: 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  max-width: 30ch;
  transition: color 240ms var(--ease), opacity 240ms var(--ease);
}

@media (hover: hover) {
  .page-features .feat-item:hover .feat-item-side {
    background: var(--color-contrast-surface);
  }
  .page-features .feat-item:hover .feat-num {
    color: var(--color-contrast-accent);
  }
  .page-features .feat-item:hover .feat-name {
    color: var(--color-contrast-ink);
  }
  .page-features .feat-item:hover .feat-audience {
    color: var(--color-contrast-ink);
    opacity: 0.78;
  }
}

.page-features .feat-item-main {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.page-features .feat-desc {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-lg);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

.page-features .feat-points {
  list-style: none;
  margin: 0;
  padding: 0;
  max-width: var(--measure);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.page-features .feat-points li {
  position: relative;
  padding-left: var(--space-3);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-features .feat-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.85em;
  width: var(--space-2);
  height: var(--border-thin);
  background: var(--color-primary);
}

.page-features .feat-points strong {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-ink);
}

.page-features .feat-metrics {
  list-style: none;
  margin: 0;
  padding: 0;
  max-width: var(--measure);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-features .feat-metrics li {
  padding: var(--space-2) 0;
  border-bottom: var(--border-thin) solid var(--color-line);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-features .feat-stage {
  margin: 0;
  max-width: var(--measure);
  padding: var(--space-2) var(--space-3);
  background: var(--color-primary-soft);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

.page-features .feat-start {
  margin: 0;
  max-width: var(--measure);
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

.page-features .feat-entry {
  align-self: flex-start;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  color: var(--color-ink);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: var(--border-thin) solid var(--color-line);
  transition: color 200ms var(--ease), border-color 200ms var(--ease);
}

.page-features .feat-entry::after {
  content: " →";
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}

.page-features .feat-entry:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

/* ---------- 图片与表格 ---------- */

.page-features .feat-media-inline {
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-surface-deep);
}

.page-features .feat-media-inline img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-features .feat-table-wrap {
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-features .feat-table {
  width: 100%;
  min-width: 540px;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.page-features .feat-table caption {
  caption-side: bottom;
  text-align: left;
  padding-top: var(--space-2);
  font-size: var(--text-xs);
  line-height: 1.7;
  color: var(--color-ink-muted);
}

.page-features .feat-table th,
.page-features .feat-table td {
  padding: var(--space-2);
  text-align: left;
  border-bottom: var(--border-thin) solid var(--color-line);
  vertical-align: baseline;
}

.page-features .feat-table th {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  white-space: nowrap;
}

.page-features .feat-table .num {
  text-align: right;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--color-ink);
  white-space: nowrap;
}

.page-features .feat-table .key {
  color: var(--color-ink);
  white-space: nowrap;
}

.page-features .feat-table th.feat-col-flag,
.page-features .feat-table td.feat-col-flag {
  color: var(--color-primary);
}

@media (hover: hover) {
  .page-features .feat-table tbody tr:hover {
    background: var(--color-highlight);
  }
}

/* ---------- 通道维护 ---------- */

.page-features .feat-channel {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-3);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-radius: var(--radius-md);
}

.page-features .feat-channel-flag {
  align-self: flex-start;
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  letter-spacing: 0.02em;
  padding: var(--space-1) var(--space-2);
  background: var(--color-contrast-accent);
  color: var(--color-primary-ink);
  border-radius: var(--radius-sm);
}

.page-features .feat-channel-rows {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-features .feat-channel-rows li {
  display: grid;
  grid-template-columns: 4.5em minmax(0, 1fr);
  gap: var(--space-1) var(--space-3);
  padding: var(--space-2) 0;
  border-top: var(--border-thin) solid var(--color-contrast-line);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
}

.page-features .feat-channel-rows li:last-child {
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
}

.page-features .feat-channel-rows li > span:first-child {
  font-family: var(--font-mono);
  color: var(--color-contrast-accent);
}

.page-features .feat-channel-rows strong {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  color: var(--color-contrast-ink);
}

.page-features .feat-channel-rows .log-more {
  grid-column: 2 / -1;
  color: var(--color-contrast-ink);
  opacity: 0.72;
}

@media (hover: hover) {
  .page-features .feat-channel-rows .log-more {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 260ms var(--ease), opacity 200ms var(--ease);
  }
  .page-features .feat-channel-rows li:hover .log-more,
  .page-features .feat-channel-rows li:focus-within .log-more {
    max-height: 12em;
    opacity: 0.72;
  }
}

.page-features .feat-channel-note {
  margin: 0;
  font-size: var(--text-xs);
  line-height: 1.8;
  color: var(--color-contrast-ink);
  opacity: 0.72;
}

/* ---------- 新人三步 ---------- */

.page-features .feat-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-2);
}

.page-features .feat-steps li {
  padding: var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  transition: background-color 240ms var(--ease);
}

.page-features .step-chip {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  letter-spacing: 0.02em;
  padding: 2px var(--space-2);
  background: var(--color-surface-deep);
  color: var(--color-ink-soft);
  border-radius: var(--radius-sm);
  transition: background-color 240ms var(--ease), color 240ms var(--ease);
}

.page-features .step-title {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
  color: var(--color-ink);
  margin: var(--space-2) 0 var(--space-1);
  transition: color 240ms var(--ease);
}

.page-features .step-text {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  transition: color 240ms var(--ease);
}

@media (hover: hover) {
  .page-features .feat-steps li:hover {
    background: var(--color-contrast-surface);
  }
  .page-features .feat-steps li:hover .step-chip {
    background: var(--color-contrast-accent);
    color: var(--color-primary-ink);
  }
  .page-features .feat-steps li:hover .step-title {
    color: var(--color-contrast-ink);
  }
  .page-features .feat-steps li:hover .step-text {
    color: var(--color-contrast-ink);
    opacity: 0.8;
  }
}

/* ---------- 出口 ---------- */

.page-features .feat-exit {
  padding: var(--section-y) 0 0;
}

.page-features .feat-exit-panel {
  padding: var(--space-6) var(--space-4);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-radius: var(--radius-md);
}

.page-features .feat-exit-title {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-2xl);
  line-height: var(--leading-heading);
  color: var(--color-contrast-ink);
  margin: 0 0 var(--space-2);
}

.page-features .feat-exit-lede {
  margin: 0 0 var(--space-4);
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  opacity: 0.78;
}

.page-features .feat-exit-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.page-features .feat-exit-list li {
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
}

.page-features .feat-exit-list a {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2px;
  padding: var(--space-3) var(--space-2);
  text-decoration: none;
  color: var(--color-contrast-ink);
  transition: background-color 220ms var(--ease), color 220ms var(--ease);
}

.page-features .feat-exit-list a:hover {
  background: var(--color-contrast-accent);
  color: var(--color-primary-ink);
}

.page-features .feat-exit-name {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
}

.page-features .feat-exit-desc {
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  opacity: 0.78;
}

@media (min-width: 720px) {
  .page-features .feat-exit-list a {
    grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
    align-items: baseline;
    gap: var(--space-4);
  }
}
<<<END>>>