/* ----- 基础样式 ----- */
.quality-section {
  position: relative;
}

.quality-section + .quality-section {
  border-top: 1px solid rgba(230,235,244,.78);
}

.quality-shell {
  border: 1px solid rgba(230,235,244,.95);
  border-radius: 32px;
  background: #fff;
  box-shadow: 0 22px 52px -38px rgba(15,23,42,.16);
  overflow: hidden;
}

.section-plain {
  background: #ffffff;
}

.section-soft {
  background: var(--soft);
}

.h-title3 {
  font-size: 2.2rem;
  font-weight: 750;
  letter-spacing: -.02em;
  margin: .75rem 0 1rem;
  color: var(--ink);
}

.p-lead {
  color: var(--muted);
  font-size: 1.15rem;
  line-height: 1.75;
  max-width: 52rem;
}

.kicker {
  display: inline-block;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: .08em;
  text-transform: uppercase;
  font-size: .82rem;
}

/* =========================
   模块1：RS Map 管控（对比卡片版）
========================= */
.quality-rs-shell {
  padding: 48px;
  background: radial-gradient(circle at right top, rgba(31,107,255,.06), transparent 30%),
              linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
}

.quality-rs-header {
  text-align: center;
  margin-bottom: 48px;
}

.quality-rs-desc {
  max-width: 680px;
  margin: 0 auto;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.75;
}

/* 左右对比布局 */
.quality-rs-comparison {
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: 24px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

/* RS 卡片 */
.rs-card {
  flex: 1;
  min-width: 320px;
  background: #fff;
  border-radius: 28px;
  border: 1px solid rgba(230,235,244,.95);
  overflow: hidden;
  transition: all .3s ease;
  box-shadow: 0 20px 40px -24px rgba(15,23,42,.12);
}

.rs-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 28px 48px -28px rgba(31,107,255,.18);
  border-color: rgba(31,107,255,.25);
}

.rs-card-before {
  border-top: 4px solid #dc2626;
}

.rs-card-after {
  border-top: 4px solid #10b981;
}

.rs-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 24px;
  background: #f8fafc;
  border-bottom: 1px solid rgba(230,235,244,.95);
}

.rs-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 40px;
  font-size: .85rem;
  font-weight: 700;
}

.rs-badge.before {
  background: rgba(220,38,38,.1);
  color: #dc2626;
}

.rs-badge.before::before {
  content: "●";
  font-size: 10px;
}

.rs-badge.after {
  background: rgba(16,185,129,.1);
  color: #10b981;
}

.rs-badge.after::before {
  content: "●";
  font-size: 10px;
}

.rs-stat {
  font-size: .9rem;
  color: var(--muted);
}

.rs-stat strong {
  font-size: 1.3rem;
  font-weight: 800;
  margin-left: 6px;
}

.rs-card-before .rs-stat strong {
  color: #dc2626;
}

.rs-card-after .rs-stat strong {
  color: #10b981;
}

/* RS 卡片图片区域 */
.rs-card-image {
  padding: 24px;
  background: linear-gradient(145deg, #f5f7fc, #ffffff);
  border-bottom: 1px solid rgba(230,235,244,.95);
}

.rs-card-image img {
  width: 100%;
  border-radius: 16px;
  background: #0d1526;
  display: block;
  box-shadow: 0 8px 20px -12px rgba(0,0,0,.15);
}

.rs-image-caption {
  margin-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: .75rem;
  font-family: 'SF Mono', 'Monaco', 'Consolas', monospace;
  color: var(--muted);
  background: rgba(31,107,255,.04);
  padding: 10px 14px;
  border-radius: 12px;
}

.rs-image-caption span {
  display: block;
}

/* RS 卡片数据区域 */
.rs-card-footer {
  padding: 18px 24px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  background: #fff;
}

.rs-data-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 6px 0;
  border-bottom: 1px dashed rgba(230,235,244,.6);
  font-size: .88rem;
}

.rs-data-row span {
  color: var(--muted);
  font-weight: 500;
}

.rs-data-row strong {
  font-weight: 700;
  color: var(--ink);
}

.rs-data-row .text-fail {
  color: #dc2626;
}

/* 中间箭头 */
.rs-arrow {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 8px;
}

.rs-arrow i {
  font-size: 2.2rem;
  color: var(--brand);
  opacity: .7;
}

.rs-arrow span {
  font-size: .75rem;
  font-weight: 600;
  color: var(--brand);
  background: rgba(31,107,255,.1);
  padding: 4px 10px;
  border-radius: 40px;
  white-space: nowrap;
}

/* 算法说明区域 */
.quality-rs-algorithm {
  background: rgba(31,107,255,.03);
  border-radius: 24px;
  padding: 28px 32px;
  border: 1px solid rgba(31,107,255,.08);
}

.algorithm-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 18px;
  background: rgba(31,107,255,.1);
  border-radius: 40px;
  font-size: .85rem;
  font-weight: 700;
  color: var(--brand-dark);
  margin-bottom: 20px;
}

.algorithm-points {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 20px;
}

.algorithm-points span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .9rem;
  font-weight: 600;
  color: var(--ink);
}

.algorithm-points i {
  color: var(--brand);
  font-size: 1rem;
}

.algorithm-note {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 20px;
  background: rgba(31,107,255,.06);
  border-radius: 18px;
  font-size: .88rem;
  color: var(--muted);
  line-height: 1.65;
}

.algorithm-note i {
  color: var(--brand);
  font-size: 1.1rem;
  margin-top: 2px;
  flex-shrink: 0;
}

/* =========================
   模块2：流程步骤
========================= */
.quality-capability-head {
  margin-bottom: 28px;
}

.quality-process-wrap {
  padding-top: 4px;
}

.quality-process {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 26px;
  margin-top: 26px;
}

.quality-process::before {
  content: "";
  position: absolute;
  left: 6%;
  right: 6%;
  top: 28px;
  height: 1px;
  z-index: 0;
  background: linear-gradient(90deg, rgba(31,107,255,.12), rgba(31,107,255,.30), rgba(31,107,255,.12));
}

.quality-step {
  position: relative;
  z-index: 1;
  text-align: left;
}

.quality-step-no {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  border: 1px solid rgba(31,107,255,.16);
  color: var(--brand);
  font-weight: 800;
  margin-bottom: 18px;
  box-shadow: 0 14px 30px -24px rgba(31,107,255,.36);
}

.quality-step h3 {
  margin: 0 0 10px;
  font-size: 1.04rem;
  font-weight: 760;
  color: var(--ink);
}

.quality-step p {
  margin: 0;
  max-width: 15rem;
  color: var(--muted);
  font-size: .95rem;
  line-height: 1.8;
}

/* =========================
   模块3：技术支持与失效分析闭环
========================= */
.quality-support-shell {
  border: 1px solid rgba(230,235,244,.95);
  border-radius: 32px;
  background: #fff;
  overflow: hidden;
  transition: box-shadow .3s ease;
}

.quality-support-shell:hover {
  box-shadow: 0 24px 52px -32px rgba(31,107,255,.12);
}

.quality-support-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 0;
  align-items: stretch;
}

.quality-support-copy {
  padding: 44px 40px;
  background: #fff;
}

.quality-support-features {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin: 28px 0 24px;
}

.support-feature {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.support-feature i {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, rgba(31,107,255,.1), rgba(83,179,255,.08));
  border-radius: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--brand);
  font-size: 1.2rem;
  flex-shrink: 0;
  transition: all .2s ease;
}

.support-feature:hover i {
  transform: scale(1.05);
  background: linear-gradient(135deg, rgba(31,107,255,.15), rgba(83,179,255,.12));
}

.support-feature h4 {
  margin: 0 0 6px;
  font-size: 1rem;
  font-weight: 760;
  color: var(--ink);
}

.support-feature p {
  margin: 0;
  color: var(--muted);
  font-size: .94rem;
  line-height: 1.7;
}

.quality-support-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 8px;
}

.quality-support-badges span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: .5rem 1.1rem;
  background: rgba(31,107,255,.06);
  border-radius: 999px;
  font-size: .85rem;
  font-weight: 600;
  color: var(--brand-dark);
  transition: all .2s ease;
}

.quality-support-badges span:hover {
  background: rgba(31,107,255,.12);
  transform: translateY(-1px);
}

.quality-support-media {
  background: linear-gradient(135deg, #F8FBFF 0%, #F0F5FE 100%);
  border-left: 1px solid rgba(230,235,244,.95);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 20px;
  padding: 44px 32px;
}

.support-media-card {
  background: #fff;
  border: 1px solid rgba(230,235,244,.95);
  border-radius: 24px;
  padding: 24px 20px;
  text-align: center;
  transition: all .25s ease;
}

.support-media-card:hover {
  transform: translateY(-4px);
  border-color: rgba(31,107,255,.25);
  box-shadow: 0 20px 32px -20px rgba(31,107,255,.15);
}

.support-media-card i {
  font-size: 2rem;
  color: var(--brand);
  margin-bottom: 14px;
  display: inline-block;
}

.support-media-card h4 {
  margin: 0 0 6px;
  font-size: 1rem;
  font-weight: 760;
}

.support-media-card p {
  margin: 0;
  color: var(--muted);
  font-size: .88rem;
}

/* =========================
   响应式样式
========================= */
@media (max-width: 1199.98px) {
  .quality-process {
    grid-template-columns: repeat(2, 1fr);
    row-gap: 28px;
  }
  .quality-process::before {
    display: none;
  }
  .quality-support-grid {
    grid-template-columns: 1fr;
  }
  .quality-support-media {
    border-left: none;
    border-top: 1px solid rgba(230,235,244,.95);
    flex-direction: row;
    flex-wrap: wrap;
  }
  .support-media-card {
    flex: 1;
    min-width: 160px;
  }
}

@media (max-width: 991.98px) {
  .quality-rs-shell {
    padding: 32px 24px;
  }
  .quality-rs-comparison {
    flex-direction: column;
    align-items: center;
  }
  .rs-card {
    width: 100%;
    max-width: 480px;
  }
  .rs-arrow {
    flex-direction: row;
    padding: 8px 0;
  }
  .rs-arrow i {
    transform: rotate(90deg);
  }
  .rs-arrow span {
    white-space: normal;
  }
  .quality-support-media {
    flex-direction: row;
    flex-wrap: wrap;
  }
}

@media (max-width: 767.98px) {
  .section {
    padding: 48px 0;
  }
  .quality-rs-shell {
    padding: 24px 16px;
  }
  .rs-card {
    min-width: auto;
  }
  .rs-card-header {
    padding: 14px 18px;
    flex-wrap: wrap;
    gap: 10px;
  }
  .rs-card-image {
    padding: 16px;
  }
  .rs-card-footer {
    padding: 14px 18px;
    grid-template-columns: repeat(2, 1fr);
  }
  .algorithm-points {
    gap: 10px;
  }
  .algorithm-points span {
    font-size: .82rem;
  }
  .algorithm-note {
    padding: 12px 16px;
    font-size: .82rem;
  }
  .quality-process {
    grid-template-columns: 1fr;
  }
  .quality-support-copy,
  .quality-support-media {
    padding: 28px 24px;
  }
  .quality-support-media {
    flex-direction: column;
  }
  .support-media-card {
    min-width: auto;
  }
  .h-title3 {
    font-size: 1.75rem;
  }
  .p-lead {
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  .quality-rs-comparison {
    gap: 16px;
  }
  .rs-card-footer {
    grid-template-columns: 1fr;
  }
  .rs-arrow {
    width: 100%;
  }
}

/* 锚点滚动偏移 */
#quality-rs {
  scroll-margin-top: 90px;
}