.page-guarantee {
  display: block;
  background: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-guarantee .container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ========== 首屏 ========== */
.page-guarantee .proof-hero {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-bottom: var(--border-thick) solid var(--color-ink);
  padding: var(--space-6) 0 0;
  position: relative;
  overflow: hidden;
}

.page-guarantee .proof-hero::after {
  content: "";
  position: absolute;
  top: -160px;
  right: -160px;
  width: 380px;
  height: 380px;
  background: var(--color-accent);
  transform: rotate(24deg);
  opacity: 0.28;
  pointer-events: none;
}

.page-guarantee .proof-hero-inner {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  gap: var(--space-4);
}

.page-guarantee .proof-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-sm);
  color: var(--color-contrast-ink);
  opacity: 0.72;
}

.page-guarantee .proof-crumb a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-guarantee .proof-crumb a:hover,
.page-guarantee .proof-crumb a:focus-visible {
  border-bottom-color: currentColor;
}

.page-guarantee .proof-crumb span[aria-current="page"] {
  color: var(--color-contrast-accent);
  opacity: 1;
}

/* 首屏三个数字 */
.page-guarantee .hero-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: var(--border-thick) solid var(--color-contrast-line);
  border-bottom: var(--border-thick) solid var(--color-contrast-line);
}

.page-guarantee .hero-stat {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  padding: var(--space-3) 0;
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
}

.page-guarantee .hero-stat:last-child {
  border-bottom: 0;
}

.page-guarantee .hero-stat-num {
  font-family: var(--font-mono);
  font-size: var(--text-4xl);
  font-weight: var(--weight-heading);
  line-height: 0.94;
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-accent);
}

.page-guarantee .hero-stat-label {
  font-size: var(--text-sm);
  color: var(--color-contrast-ink);
  opacity: 0.86;
}

/* 标题 + 索引 */
.page-guarantee .hero-main {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  padding: var(--space-6) 0 var(--space-8);
}

.page-guarantee .hero-title-col {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.page-guarantee .hero-title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: 0.94;
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-ink);
  word-break: keep-all;
}

.page-guarantee .hero-lede {
  margin: 0;
  max-width: 54ch;
  font-size: var(--text-lg);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
  opacity: 0.88;
}

.page-guarantee .hero-index-col {
  border: var(--border-thick) solid var(--color-contrast-line);
  background: rgba(164, 90, 241, 0.08);
  padding: var(--space-3);
}

.page-guarantee .hero-index-head {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-contrast-accent);
}

.page-guarantee .hero-index {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-guarantee .hero-index li {
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.page-guarantee .hero-index li:first-child {
  border-top: 0;
}

.page-guarantee .hero-index-link {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  padding: var(--space-2) 0;
  color: var(--color-contrast-ink);
  text-decoration: none;
  transition: color 160ms ease, transform 160ms ease;
}

.page-guarantee .hero-index-link:hover,
.page-guarantee .hero-index-link:focus-visible {
  color: var(--color-contrast-accent);
  transform: translateX(4px);
}

.page-guarantee .idx-num {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: var(--color-contrast-accent);
  min-width: 3ch;
}

.page-guarantee .idx-name {
  font-size: var(--text-sm);
  line-height: 1.4;
}

.page-guarantee .hero-figure {
  margin: 0;
  border-top: var(--border-thick) solid var(--color-contrast-line);
}

.page-guarantee .hero-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 21 / 9;
  object-fit: cover;
}

/* ========== 分组通用 ========== */
.page-guarantee .grp {
  border-bottom: var(--border-thick) solid var(--color-ink);
  padding: var(--section-y) 0;
}

.page-guarantee .grp-light {
  background: var(--color-surface);
  color: var(--color-ink);
}

.page-guarantee .grp-dark {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-guarantee .grp-inner {
  display: grid;
  gap: var(--space-6);
}

.page-guarantee .grp-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: var(--border-thick) solid currentColor;
}

.page-guarantee .grp-head-wide {
  grid-template-columns: 1fr;
}

.page-guarantee .grp-tag {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.12em;
  color: var(--color-accent);
}

.page-guarantee .grp-dark .grp-tag {
  color: var(--color-contrast-accent);
}

.page-guarantee .grp-title {
  margin: 0 0 var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: 1.05;
  letter-spacing: var(--tracking-heading);
}

.page-guarantee .grp-lede {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  opacity: 0.88;
}

.page-guarantee .grp-inline-link {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 2px;
}

.page-guarantee .grp-dark .grp-inline-link {
  color: var(--color-contrast-accent);
}

.page-guarantee .grp-inline-link:hover,
.page-guarantee .grp-inline-link:focus-visible {
  color: var(--color-accent);
}

.page-guarantee .grp-figure {
  margin: 0;
  border: var(--border-thick) solid var(--color-ink);
  box-shadow: var(--shadow-1);
  background: var(--color-surface-alt);
}

.page-guarantee .grp-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-guarantee .grp-figure-tall img {
  aspect-ratio: 3 / 4;
}

.page-guarantee .grp-figure-mid img {
  aspect-ratio: 21 / 9;
}

.page-guarantee .grp-figure figcaption {
  padding: var(--space-2) var(--space-3);
  border-top: var(--border-thin) solid var(--color-ink);
  font-size: var(--text-sm);
  line-height: 1.5;
  color: var(--color-ink-soft);
  background: var(--color-surface);
}

.page-guarantee .grp-dark .grp-figure {
  border-color: var(--color-contrast-line);
  box-shadow: 8px 8px 0 var(--color-contrast-accent);
}

.page-guarantee .grp-dark .grp-figure figcaption {
  border-top-color: var(--color-contrast-line);
  color: var(--color-contrast-ink);
  background: var(--color-contrast-surface);
}

/* ========== 案例列表 ========== */
.page-guarantee .case-list {
  display: grid;
  gap: var(--space-6);
}

.page-guarantee .case-card {
  background: var(--color-surface);
  color: var(--color-ink);
  border: var(--border-thick) solid var(--color-ink);
  box-shadow: var(--shadow-1);
  padding: var(--space-3);
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-2) var(--space-3);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.page-guarantee .case-card:hover {
  transform: translate(-3px, -4px);
  box-shadow: var(--shadow-2);
}

.page-guarantee .case-card:target {
  border-color: var(--color-accent);
  box-shadow: 8px 8px 0 var(--color-accent);
}

.page-guarantee .case-num {
  font-family: var(--font-mono);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: 0.86;
  letter-spacing: var(--tracking-heading);
  color: var(--color-accent);
}

.page-guarantee .case-head {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  align-self: center;
}

.page-guarantee .case-title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: 1.15;
  letter-spacing: var(--tracking-heading);
}

.page-guarantee .case-meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-guarantee .case-body {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: var(--border-thick) solid var(--color-ink);
  margin-top: var(--space-2);
}

.page-guarantee .case-cell {
  padding: var(--space-3) 0;
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-guarantee .case-cell:last-child {
  border-bottom: 0;
}

.page-guarantee .case-cell-label {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.14em;
  color: var(--color-ink-muted);
}

.page-guarantee .case-cell p {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
}

.page-guarantee .case-cell-result {
  background: var(--color-primary-soft);
  padding: var(--space-3);
  margin-top: var(--space-2);
}

.page-guarantee .case-cell-result .case-cell-label {
  color: var(--color-primary);
}

.page-guarantee .metric-chip {
  display: inline-block;
  font-family: var(--font-mono);
  font-weight: var(--weight-heading);
  font-size: var(--text-base);
  line-height: 1.5;
  padding: 0 var(--space-1);
  background: var(--color-primary);
  color: var(--color-primary-ink);
  white-space: nowrap;
}

/* 深色组内的案例卡 */
.page-guarantee .case-list-dark .case-card {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-color: var(--color-contrast-line);
  box-shadow: 6px 6px 0 var(--color-contrast-accent);
}

.page-guarantee .case-list-dark .case-card:hover {
  box-shadow: 10px 10px 0 var(--color-contrast-accent);
}

.page-guarantee .case-list-dark .case-num {
  color: var(--color-contrast-accent);
}

.page-guarantee .case-list-dark .case-meta {
  color: var(--color-contrast-ink);
  opacity: 0.66;
}

.page-guarantee .case-list-dark .case-body {
  border-top-color: var(--color-contrast-line);
}

.page-guarantee .case-list-dark .case-cell {
  border-bottom-color: var(--color-contrast-line);
}

.page-guarantee .case-list-dark .case-cell-label {
  color: var(--color-contrast-accent);
}

.page-guarantee .case-list-dark .case-cell-result {
  background: rgba(164, 90, 241, 0.16);
}

/* ========== 结果汇总 ========== */
.page-guarantee .wrap-up {
  background: var(--color-primary);
  color: var(--color-primary-ink);
  border-bottom: var(--border-thick) solid var(--color-ink);
  padding: var(--section-y-lg) 0;
}

.page-guarantee .wrap-up-inner {
  display: grid;
  gap: var(--space-6);
}

.page-guarantee .wrap-up-tag {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.16em;
}

.page-guarantee .wrap-up-title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: 1.1;
  letter-spacing: var(--tracking-heading);
}

.page-guarantee .wrap-up-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: var(--border-thick) solid var(--color-primary-ink);
}

.page-guarantee .wrap-up-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-3);
  align-items: start;
  padding: var(--space-4) 0;
  border-bottom: var(--border-thin) solid rgba(255, 255, 255, 0.42);
}

.page-guarantee .wrap-up-item:last-child {
  border-bottom: 0;
}

.page-guarantee .wrap-up-num {
  font-family: var(--font-mono);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: 0.86;
  letter-spacing: var(--tracking-heading);
  color: var(--color-primary-ink);
}

.page-guarantee .wrap-up-text h3 {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: 1.25;
}

.page-guarantee .wrap-up-text p {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
}

/* 时间跨度条 */
.page-guarantee .timeline-fig {
  margin: 0;
  padding: var(--space-3);
  border: var(--border-thick) solid var(--color-primary-ink);
  background: rgba(255, 255, 255, 0.12);
}

.page-guarantee .timeline-svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-guarantee .tl-line {
  stroke: var(--color-primary-ink);
  stroke-width: 4;
  opacity: 0.5;
}

.page-guarantee .tl-node {
  fill: var(--color-primary-ink);
}

.page-guarantee .tl-node-active {
  fill: var(--color-ink);
}

.page-guarantee .tl-label {
  fill: var(--color-primary-ink);
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: var(--weight-heading);
  letter-spacing: 0.06em;
}

.page-guarantee .timeline-fig figcaption {
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  line-height: 1.5;
}

/* ========== 行动出口 ========== */
.page-guarantee .outro {
  background: var(--color-surface);
  color: var(--color-ink);
  padding: var(--section-y) 0;
}

.page-guarantee .outro-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.page-guarantee .outro-main {
  border: var(--border-thick) solid var(--color-ink);
  box-shadow: var(--shadow-2);
  background: var(--color-surface-alt);
  padding: var(--space-4);
  display: grid;
  gap: var(--space-3);
}

.page-guarantee .outro-title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: 1.1;
  letter-spacing: var(--tracking-heading);
}

.page-guarantee .outro-lede {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
}

.page-guarantee .outro-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.page-guarantee .outro-btn {
  display: inline-block;
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  text-decoration: none;
  border: var(--border-thick) solid var(--color-ink);
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.page-guarantee .btn-primary.outro-btn {
  background: var(--color-primary);
  color: var(--color-primary-ink);
  box-shadow: var(--shadow-1);
}

.page-guarantee .btn-quiet.outro-btn {
  background: var(--color-surface);
  color: var(--color-ink);
  box-shadow: var(--shadow-1);
}

.page-guarantee .outro-btn:hover,
.page-guarantee .outro-btn:focus-visible {
  transform: translate(-3px, -3px);
  box-shadow: var(--shadow-2);
}

.page-guarantee .outro-contact {
  border: var(--border-thick) solid var(--color-ink);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  padding: var(--space-4);
  display: grid;
  gap: var(--space-2);
  align-content: start;
}

.page-guarantee .outro-contact-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.14em;
  color: var(--color-contrast-accent);
}

.page-guarantee .outro-contact-value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  word-break: break-all;
}

.page-guarantee .outro-contact-note {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.6;
  opacity: 0.82;
}

/* ========== 焦点可见 ========== */
.page-guarantee a:focus-visible,
.page-guarantee button:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}

/* ========== 响应式 ========== */
@media (min-width: 600px) {
  .page-guarantee .hero-stats {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-guarantee .hero-stat {
    border-bottom: 0;
    border-right: var(--border-thin) solid var(--color-contrast-line);
    padding: var(--space-3) var(--space-3);
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-1);
  }

  .page-guarantee .hero-stat:first-child {
    padding-left: 0;
  }

  .page-guarantee .hero-stat:last-child {
    border-right: 0;
  }

  .page-guarantee .case-body {
    grid-template-columns: 1fr 1fr 1.25fr;
  }

  .page-guarantee .case-cell {
    padding: 0 var(--space-3) 0 0;
    border-bottom: 0;
    border-right: var(--border-thin) solid var(--color-line);
  }

  .page-guarantee .case-cell:last-child {
    padding-right: 0;
    border-right: 0;
  }

  .page-guarantee .case-cell-result {
    padding: var(--space-3);
    margin-top: 0;
  }

  .page-guarantee .case-list-dark .case-cell {
    border-right-color: var(--color-contrast-line);
  }

  .page-guarantee .outro-inner {
    grid-template-columns: 1.5fr 1fr;
  }
}

@media (min-width: 900px) {
  .page-guarantee .hero-main {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: var(--space-6);
    align-items: start;
  }

  .page-guarantee .grp-head {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: var(--space-6);
    align-items: start;
  }

  .page-guarantee .grp-head-wide {
    grid-template-columns: 1fr;
  }

  .page-guarantee .hero-figure img {
    aspect-ratio: 21 / 9;
  }

  .page-guarantee .wrap-up-inner {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 1100px) {
  .page-guarantee .grp-head-text {
    padding-right: var(--space-6);
  }

  .page-guarantee .case-card {
    padding: var(--space-4);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-guarantee .case-card,
  .page-guarantee .outro-btn,
  .page-guarantee .hero-index-link {
    transition: none;
  }

  .page-guarantee .case-card:hover,
  .page-guarantee .outro-btn:hover,
  .page-guarantee .hero-index-link:hover {
    transform: none;
  }
}