/**
 * 六纲科技官网 — 项目案例页样式
 * 目录锚点导航 + 案例详情（背景 / 架构 / 功能 / 截图）
 */

/* —— 页头补充说明 —— */
.r6-cases-partial-badge {
  margin-bottom: 1rem;
}

.r6-cases-hero-desc {
  margin-top: 1rem;
  font-size: clamp(0.9375rem, 1.6vw, 1.0625rem);
  line-height: 1.75;
  color: var(--r6-text-secondary);
  /* 窄屏须允许折行；keep-all 在 iOS Safari 下会导致整段不换行并撑出横向滚动 */
  max-width: 100%;
  min-width: 0;
  overflow-wrap: break-word;
  word-break: normal;
}

/* —— 主体两栏：左侧目录 + 右侧案例 —— */
.r6-cases-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(2rem, 4vw, 3rem);
  align-items: start;
  width: 100%;
}

@media (min-width: 992px) {
  .r6-cases-shell {
    grid-template-columns: minmax(220px, 260px) minmax(0, 1fr);
    gap: clamp(2.5rem, 5vw, 4rem);
  }
}

/* —— 目录导航（桌面 sticky） —— */
.r6-cases-toc-wrap {
  width: 100%;
}

@media (min-width: 992px) {
  .r6-cases-toc-wrap {
    position: sticky;
    top: calc(5.5rem + env(safe-area-inset-top, 0px));
    align-self: start;
  }
}

.r6-cases-toc {
  padding: clamp(1.25rem, 2.5vw, 1.5rem);
  border-radius: var(--r6-radius-lg);
  background: var(--r6-glass-bg-light);
  border: 1px solid var(--r6-border-subtle);
}

.r6-cases-toc-title {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--r6-gray-400);
  margin-bottom: 1rem;
}

/* 目录分组标题（数字化运营 / 行业项目） */
.r6-cases-toc-group-title {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--r6-gray-500);
  margin: 1rem 0 0.5rem;
  padding-left: 0.75rem;
}

.r6-cases-toc-group-title:first-of-type {
  margin-top: 0;
}

.r6-cases-toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.375rem;
}

.r6-cases-toc-list a {
  display: block;
  padding: 0.5rem 0.75rem;
  border-radius: var(--r6-radius-md);
  font-size: clamp(0.875rem, 1.4vw, 0.9375rem);
  line-height: 1.45;
  color: var(--r6-gray-300);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color var(--r6-transition-fast), background var(--r6-transition-fast), border-color var(--r6-transition-fast);
}

.r6-cases-toc-list a:hover {
  color: var(--r6-white);
  background: rgba(255, 255, 255, 0.04);
}

.r6-cases-toc-list a.is-active {
  color: var(--r6-white);
  background: rgba(255, 255, 255, 0.06);
  border-left-color: var(--r6-gray-400);
}

/* —— 案例列表 —— */
.r6-cases-list {
  display: grid;
  gap: clamp(2.5rem, 5vw, 3.5rem);
  width: 100%;
}

/* —— 单个案例卡片 —— */
.r6-case-card {
  scroll-margin-top: calc(5.5rem + env(safe-area-inset-top, 0px));
  padding: clamp(1.75rem, 3.5vw, 2.5rem);
  border-radius: var(--r6-radius-lg);
  background: var(--r6-gray-900);
  border: 1px solid var(--r6-border-subtle);
  box-shadow: var(--r6-shadow-md);
}

.r6-case-card-header {
  margin-bottom: clamp(1.5rem, 3vw, 2rem);
  padding-bottom: clamp(1rem, 2vw, 1.25rem);
  border-bottom: 1px solid var(--r6-border-subtle);
}

.r6-case-tag {
  display: inline-block;
  margin-bottom: 0.75rem;
  padding: 0.25rem 0.625rem;
  border-radius: var(--r6-radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--r6-gray-300);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--r6-border-subtle);
}

.r6-case-title {
  font-size: clamp(1.375rem, 2.8vw, 1.75rem);
  font-weight: 700;
  line-height: 1.3;
  color: var(--r6-white);
  margin: 0;
}

/* —— 案例内容块 —— */
.r6-case-blocks {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2rem);
}

.r6-case-block-title {
  font-size: clamp(0.9375rem, 1.6vw, 1rem);
  font-weight: 700;
  color: var(--r6-white);
  margin-bottom: 0.75rem;
}

.r6-case-block-text {
  font-size: clamp(0.875rem, 1.5vw, 0.9375rem);
  line-height: 1.8;
  color: var(--r6-gray-400);
  margin: 0;
}

/* —— 技术栈标签 —— */
.r6-case-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
}

.r6-case-stack li {
  padding: 0.375rem 0.75rem;
  border-radius: var(--r6-radius-sm);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--r6-gray-300);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--r6-border-subtle);
}

/* —— 功能列表 —— */
.r6-case-features {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.625rem;
}

.r6-case-features li {
  position: relative;
  padding-left: 1.125rem;
  font-size: clamp(0.875rem, 1.5vw, 0.9375rem);
  line-height: 1.65;
  color: var(--r6-gray-400);
}

.r6-case-features li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--r6-gray-500);
}

/* —— 截图区域：按 PC / 移动端分组排列 —— */
.r6-case-screens {
  display: flex;
  flex-direction: column;
  gap: clamp(1.25rem, 2.5vw, 1.75rem);
}

/* 分组标题（PC 端 / 移动端） */
.r6-case-screens-group {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.r6-case-screens-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--r6-gray-500);
}

/* PC 端：2～3 列等宽网格，卡片高度对齐 */
.r6-case-screens-grid--desktop {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(0.75rem, 2vw, 1rem);
}

@media (min-width: 992px) {
  .r6-case-screens-grid--desktop {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.r6-case-screens-grid--desktop .r6-case-figure {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.r6-case-screens-grid--desktop .r6-case-figure img {
  flex: 1 1 auto;
  width: 100%;
  max-height: 260px;
  object-fit: contain;
  object-position: top center;
}

/* 移动端：居中横排，竖屏截图固定宽度 */
.r6-case-screens-grid--mobile {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: clamp(0.75rem, 2vw, 1.25rem);
}

.r6-case-screens-grid--mobile .r6-case-figure--mini {
  width: min(200px, calc(50% - 0.625rem));
  max-width: 200px;
  flex-shrink: 0;
}

.r6-case-screens-grid--mobile .r6-case-figure--mini img {
  max-height: 320px;
}

/* 单张或架构示意：单列居中 */
.r6-case-screens-grid--single {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  max-width: 960px;
}

.r6-case-screens-grid--single .r6-case-figure img {
  max-height: 480px;
}

/* 双列宽屏（如巡店两张架构图） */
.r6-case-screens-grid--pair {
  display: grid;
  grid-template-columns: repeat(1, minmax(0, 1fr));
  gap: clamp(0.75rem, 2vw, 1rem);
}

@media (min-width: 768px) {
  .r6-case-screens-grid--pair {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.r6-case-screens-grid--pair .r6-case-figure img {
  max-height: 420px;
}

/* JARVIS 等：首图通栏 + 下方双列 */
.r6-case-screens-grid--hero {
  display: grid;
  gap: clamp(0.75rem, 2vw, 1rem);
}

.r6-case-screens-grid--hero .r6-case-figure--hero img {
  max-height: 420px;
}

.r6-case-screens-grid--hero-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(0.75rem, 2vw, 1rem);
}

.r6-case-screens-grid--hero-row .r6-case-figure img {
  max-height: 280px;
}

.r6-case-figure {
  margin: 0;
  border-radius: var(--r6-radius-md);
  overflow: hidden;
  background: var(--r6-gray-850);
  border: 1px solid var(--r6-border-subtle);
}

.r6-case-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
  object-position: top center;
}

.r6-case-figure figcaption {
  padding: 0.625rem 0.75rem;
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--r6-gray-500);
  border-top: 1px solid var(--r6-border-subtle);
}

.r6-case-screens-grid--single .r6-case-figure--icon {
  justify-self: center;
  max-width: 160px;
}

.r6-case-figure--icon img {
  max-height: 160px;
  padding: 1rem;
  margin: 0 auto;
}

/* —— 页底 CTA —— */
.r6-cases-cta {
  text-align: center;
  max-width: 36rem;
  margin: 0 auto;
}

.r6-cases-cta .r6-section-desc {
  margin-bottom: 1.5rem;
}