.page-features {
  --feat-panel-pad: clamp(20px, 3.4vw, 36px);
  --feat-row-gap: var(--space-2);
}

.page-features .feat-crumbs {
  padding-top: var(--space-4);
  padding-bottom: var(--space-2);
}

/* ---------- 首屏 ---------- */

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

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

.page-features .feat-hero__lead {
  max-width: var(--measure);
}

.page-features .feat-hero__lead .display-title {
  margin: var(--space-2) 0 var(--space-3);
  color: var(--color-ink);
}

.page-features .feat-hero__lead .lede {
  margin: 0;
  color: var(--color-ink-soft);
  font-size: var(--text-lg);
  line-height: var(--leading-body);
}

.page-features .feat-hero__figures {
  display: grid;
  gap: var(--space-3);
  margin: var(--space-6) 0 0;
  padding: 0;
  list-style: none;
}

.page-features .feat-figure {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-areas:
    "num label"
    "num note";
  column-gap: var(--space-3);
  align-items: baseline;
  padding-left: var(--space-3);
  border-left: 3px solid var(--color-primary);
}

.page-features .feat-figure__value {
  grid-area: num;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-4xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: var(--color-ink);
}

.page-features .feat-figure__label {
  grid-area: label;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-features .feat-figure__note {
  grid-area: note;
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
  line-height: 1.6;
}

/* 比分对照面板 */

.page-features .feat-hero__panel {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  box-shadow: var(--shadow-2);
}

.page-features .feat-hero__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(0.55) contrast(1.08);
}

.page-features .feat-hero__panel::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--overlay-scrim);
  pointer-events: none;
}

.page-features .feat-hero__panel-inner {
  position: relative;
  z-index: 2;
  padding: var(--feat-panel-pad);
}

.page-features .feat-hero__switch {
  display: inline-flex;
  gap: 4px;
  padding: 4px;
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--color-contrast-ink) 14%, transparent);
}

.page-features .feat-switch__btn {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--color-contrast-ink);
  font: inherit;
  font-size: var(--text-sm);
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: background-color 200ms ease, color 200ms ease;
}

.page-features .feat-switch__btn[aria-selected="true"] {
  background: var(--color-accent);
  color: var(--color-accent-ink);
}

.page-features .feat-switch__btn:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.page-features .feat-pair {
  margin-top: var(--space-4);
}

.page-features .feat-pair__head,
.page-features .feat-pair__row {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--space-2);
  align-items: baseline;
}

.page-features .feat-pair__head {
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-contrast-line);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-contrast-ink);
  opacity: 0.72;
}

.page-features .feat-pair__team {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  text-align: right;
  opacity: 1;
}

.page-features .feat-pair__row {
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-contrast-line);
}

.page-features .feat-pair__row--last {
  border-bottom: 0;
}

.page-features .feat-pair__key {
  font-size: var(--text-sm);
  color: color-mix(in srgb, var(--color-contrast-ink) 78%, transparent);
}

.page-features .feat-pair__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  text-align: right;
  color: var(--color-contrast-ink);
}

.page-features .feat-pair__row:nth-child(4) .feat-pair__num {
  color: var(--color-contrast-accent);
}

.page-features .feat-panel-foot {
  margin: var(--space-4) 0 0;
  font-size: var(--text-xs);
  font-style: italic;
  line-height: 1.7;
  color: color-mix(in srgb, var(--color-contrast-ink) 68%, transparent);
}

@media (min-width: 960px) {
  .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__panel {
    position: sticky;
    top: calc(var(--space-8) + 12px);
  }
}

/* ---------- 通用区块头 ---------- */

.page-features .feat-block-head {
  max-width: 62ch;
  margin-bottom: var(--space-6);
}

.page-features .feat-block-head .section-title {
  margin: var(--space-2) 0 var(--space-3);
  color: var(--color-ink);
}

.page-features .feat-block-head .section-sub {
  margin: 0;
  color: var(--color-ink-soft);
}

/* ---------- 三处混乱 ---------- */

.page-features .feat-trouble {
  display: grid;
  gap: var(--space-3);
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: none;
}

.page-features .feat-trouble__item {
  padding: var(--space-4) var(--space-4) var(--space-4) calc(var(--space-4) + 4px);
  border-radius: var(--radius-md);
  background: var(--color-surface-alt);
  border-left: 4px solid var(--color-accent);
}

.page-features .feat-trouble__index {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-sm);
  letter-spacing: 0.12em;
  color: var(--color-accent);
}

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

.page-features .feat-trouble__item p {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

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

.page-features .feat-trouble__verdict p {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

/* ---------- 命名做法（全宽 + 图） ---------- */

.page-features .feat-wide {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
  align-items: start;
}

.page-features .feat-wide__text .section-title {
  margin: var(--space-2) 0 var(--space-3);
  color: var(--color-ink);
}

.page-features .feat-wide__text .section-sub {
  margin: 0 0 var(--space-4);
  color: var(--color-ink-soft);
}

.page-features .feat-wide__fig {
  margin: 0;
}

.page-features .feat-work__list {
  display: grid;
  gap: var(--space-3);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-features .feat-work__list li {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding-left: var(--space-3);
  border-left: 3px solid var(--color-primary);
}

.page-features .feat-work__label {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-features .feat-work__text {
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

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

  .page-features .feat-wide__fig {
    position: sticky;
    top: calc(var(--space-8) + 12px);
  }
}

/* ---------- 结果演示 ---------- */

.page-features .feat-result {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
  align-items: start;
}

.page-features .feat-result__fig {
  margin: 0;
}

.page-features .feat-result__body {
  display: grid;
  gap: 0;
}

.page-features .feat-result__line {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-line);
}

.page-features .feat-result__line--last {
  border-bottom: 0;
}

.page-features .feat-result__name {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-features .feat-result__value {
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-features .feat-result__note {
  font-size: var(--text-xs);
  font-style: italic;
  color: var(--color-ink-muted);
}

.page-features .feat-ranges {
  display: grid;
  gap: var(--space-2);
  margin-top: var(--space-4);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  background: var(--color-primary-soft);
}

.page-features .feat-range {
  display: grid;
  grid-template-columns: 4.5em minmax(0, 1fr) auto;
  gap: var(--space-2);
  align-items: center;
}

.page-features .feat-range__label {
  font-size: var(--text-sm);
  color: var(--color-ink);
}

.page-features .feat-range__bar {
  display: block;
  height: 10px;
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--color-primary) 22%, transparent);
  overflow: hidden;
}

.page-features .feat-range__fill {
  display: block;
  height: 100%;
  border-radius: var(--radius-pill);
  background: var(--color-primary);
}

.page-features .feat-range__fill--a {
  width: 62%;
}

.page-features .feat-range__fill--b {
  width: 84%;
  background: var(--color-accent);
}

.page-features .feat-range__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-sm);
  color: var(--color-ink);
}

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

  .page-features .feat-result__line {
    grid-template-columns: minmax(0, 3fr) minmax(0, 6fr) minmax(0, 2fr);
    align-items: baseline;
    gap: var(--space-3);
  }

  .page-features .feat-result__note {
    text-align: right;
  }
}

/* ---------- 七项速览 ---------- */

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

.page-features .feat-speed__group-title {
  margin: 0 0 var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-line);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  color: var(--color-primary);
}

.page-features .feat-speed__list {
  display: grid;
  gap: var(--space-3);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-features .feat-speed__item {
  display: grid;
  gap: 4px;
  padding: var(--space-3);
  border-radius: var(--radius-sm);
  background: var(--color-surface-alt);
}

.page-features .feat-speed__name {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-features .feat-speed__item p {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.72;
  color: var(--color-ink-soft);
}

.page-features .feat-speed__stat {
  justify-self: start;
  margin-top: 2px;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  background: var(--color-primary-soft);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-xs);
  color: var(--color-ink);
}

@media (min-width: 760px) {
  .page-features .feat-speed {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .page-features .feat-speed {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-4);
  }
}

/* ---------- 旁注与展开 ---------- */

.page-features .feat-aside {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.page-features .feat-aside__fig {
  margin: 0;
}

.page-features .feat-aside__disclosure {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  background: var(--color-surface-deep);
}

.page-features .feat-aside__disclosure .disclosure__heading {
  margin: 0;
}

.page-features .feat-aside__disclosure .disclosure__trigger {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-2) 0;
  border: 0;
  background: transparent;
  font: inherit;
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
  text-align: left;
  cursor: pointer;
}

.page-features .feat-aside__disclosure .disclosure__trigger:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.page-features .feat-aside__disclosure .disclosure__icon {
  flex: none;
  width: 12px;
  height: 12px;
  border-right: 2px solid var(--color-primary);
  border-bottom: 2px solid var(--color-primary);
  transform: rotate(45deg);
  transition: transform 320ms cubic-bezier(0.22, 0.61, 0.36, 1);
}

.page-features .feat-aside__disclosure [data-disclosure-trigger][aria-expanded="true"] .disclosure__icon {
  transform: rotate(-135deg);
}

.page-features .feat-aside__disclosure .disclosure__panel-inner {
  padding-bottom: var(--space-2);
}

.page-features .feat-aside__disclosure .disclosure__panel-inner p {
  margin: 0 0 var(--space-2);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-features .feat-aside__disclosure .disclosure__panel-inner p:last-child {
  margin-bottom: 0;
}

@media (min-width: 900px) {
  .page-features .feat-aside {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--space-6);
    align-items: start;
  }
}

/* ---------- 下一步 ---------- */

.page-features .feat-next {
  padding: var(--space-6) var(--space-4);
}

.page-features .feat-next .section-title {
  margin: var(--space-2) 0 var(--space-3);
  color: var(--color-ink);
}

.page-features .feat-next .section-sub {
  max-width: 62ch;
  margin: 0 0 var(--space-6);
  color: var(--color-ink-soft);
}

.page-features .feat-next__list {
  display: grid;
  gap: var(--space-3);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-features .feat-next__item {
  padding-left: var(--space-3);
  border-left: 3px solid var(--color-primary);
}

.page-features .feat-next__name {
  margin: 0 0 var(--space-1);
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-features .feat-next__item p {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-features .feat-next__item a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-features .feat-next__item a:hover,
.page-features .feat-next__item a:focus-visible {
  color: var(--color-focus);
}

@media (min-width: 760px) {
  .page-features .feat-next {
    padding: var(--space-8) var(--space-6);
  }

  .page-features .feat-next__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-4) var(--space-6);
  }

  .page-features .feat-next__item:last-child {
    grid-column: 1 / -1;
  }
}

/* ---------- 窄屏保护 ---------- */

@media (max-width: 560px) {
  .page-features .feat-hero__figures {
    gap: var(--space-2);
  }

  .page-features .feat-figure__value {
    font-size: var(--text-3xl);
  }

  .page-features .feat-pair__head,
  .page-features .feat-pair__row {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr) minmax(0, 1fr);
    gap: var(--space-1);
  }

  .page-features .feat-pair__key {
    font-size: var(--text-xs);
  }

  .page-features .feat-pair__num {
    font-size: var(--text-sm);
  }

  .page-features .feat-range {
    grid-template-columns: 3.4em minmax(0, 1fr) auto;
    gap: var(--space-1);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-features .feat-switch__btn,
  .page-features .feat-aside__disclosure .disclosure__icon {
    transition: none;
  }
}
<<<END>>>