/* ============================================================
   内容页样式：案例相册 / 关于我们 / 联系我们 / 帮助中心
   ------------------------------------------------------------------
   只放这 4 个页面需要的类；通用组件见 base.css，设计变量见 tokens.css。
   ============================================================ */

/* ---------- 通用：引导横条 / 文字链接按钮 ---------- */
.cta-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.cta-band-text h2 {
  font-size: 22px;
  margin-bottom: 8px;
}

.cta-band-text p {
  color: var(--c-text-sub);
  font-size: 14px;
}

.cta-band-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.link-btn {
  display: inline;
  padding: 0;
  border: 0;
  background: none;
  color: var(--c-orange-dark);
  font-size: inherit;
  font-weight: 600;
  text-decoration: underline;
}

/* ============================================================
   案例相册
   ============================================================ */
.case-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}

.case-chip {
  height: 36px;
  padding: 0 16px;
  border: 1px solid var(--c-line);
  border-radius: var(--r-pill);
  background: #fff;
  color: var(--c-text-sub);
  font-size: 14px;
  font-weight: 600;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.case-chip:hover {
  border-color: var(--c-ink);
  color: var(--c-ink);
}

.case-chip.is-active {
  background: var(--c-ink);
  border-color: var(--c-ink);
  color: #fff;
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(248px, 1fr));
  gap: var(--gap);
}

.case-card {
  overflow: hidden;
  cursor: pointer;
}

.case-thumb {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--c-bg-mute);
}

.case-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s ease;
}

.case-card:hover .case-thumb img {
  transform: scale(1.04);
}

.case-body {
  padding: 16px 18px 18px;
}

.case-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}

.case-title {
  font-size: 16px;
}

.case-desc {
  margin-top: 8px;
  font-size: 13px;
  color: var(--c-text-sub);
}

.case-zoom {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  margin-top: 12px;
  font-size: 12px;
  color: var(--c-muted);
}

.case-card:hover .case-zoom {
  color: var(--c-orange-dark);
}

.case-empty {
  grid-column: 1 / -1;
  text-align: center;
  color: var(--c-text-sub);
}

/* ---------- 大图 Lightbox ---------- */
.lb-mask {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(16, 18, 21, 0.88);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.22s;
}

.lb-mask.is-open {
  opacity: 1;
  pointer-events: auto;
}

.lb-stage {
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: 960px;
  max-height: 88vh;
  background: #fff;
  border-radius: var(--r-lg);
  overflow: hidden;
}

.lb-img {
  width: 100%;
  max-height: 64vh;
  object-fit: contain;
  background: var(--c-ink-deep);
}

.lb-cap {
  padding: 16px 20px 20px;
  overflow-y: auto;
}

.lb-cap-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.lb-title {
  font-size: 18px;
  margin-top: 8px;
}

.lb-desc {
  margin-top: 6px;
  font-size: 13px;
  color: var(--c-text-sub);
}

.lb-count {
  font-size: 12px;
  color: var(--c-muted);
}

.lb-close,
.lb-nav {
  position: fixed;
  z-index: calc(var(--z-modal) + 1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
  transition: background 0.2s;
}

.lb-close:hover,
.lb-nav:hover {
  background: rgba(255, 255, 255, 0.3);
}

.lb-close {
  top: 20px;
  right: 20px;
}

.lb-nav {
  top: 50%;
  transform: translateY(-50%);
}

.lb-prev {
  left: 18px;
}

.lb-next {
  right: 18px;
}

.lb-prev .ico {
  transform: scaleX(-1);
}

@media (max-width: 768px) {
  .lb-mask { padding: 12px; }
  .lb-stage { max-height: 92vh; }
  .lb-close { top: 10px; right: 10px; }
  .lb-close, .lb-nav { width: 38px; height: 38px; }
  .lb-prev { left: 6px; }
  .lb-next { right: 6px; }
}

/* ============================================================
   关于我们
   ============================================================ */
.about-split {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 40px;
  align-items: center;
}

.about-text h2 {
  font-size: 26px;
}

.about-para {
  margin-top: 12px;
  color: var(--c-text-sub);
  line-height: 1.9;
}

.about-points {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 18px;
}

.about-points li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 14px;
}

.about-points .ico {
  margin-top: 4px;
  color: var(--c-orange);
  flex: none;
}

.about-media {
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--c-line);
  box-shadow: var(--sh-sm);
}

.about-media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

/* 服务数据条（只用服务承诺类表达，不编造经营数字） */
.about-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--gap);
}

.about-stat {
  padding: 22px 16px;
  text-align: center;
}

.about-stat-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-bottom: 10px;
  border-radius: 50%;
  background: var(--c-orange-soft);
  color: var(--c-orange-dark);
}

.about-stat-title {
  font-weight: 700;
  color: var(--c-ink);
}

.about-stat-desc {
  margin-top: 6px;
  font-size: 13px;
  color: var(--c-text-sub);
  line-height: 1.7;
}

/* 发展历程时间线 */
.timeline {
  position: relative;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: var(--c-line);
}

.tl-item {
  position: relative;
  padding: 0 0 26px 34px;
}

.tl-item:last-child {
  padding-bottom: 0;
}

.tl-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 5px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--c-orange);
}

.tl-year {
  font-family: var(--font-num);
  font-weight: 700;
  color: var(--c-orange-dark);
}

.tl-text {
  margin-top: 4px;
  color: var(--c-text-sub);
}

/* 服务优势 */
.adv-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--gap);
}

.adv-card {
  padding: 22px 20px;
}

.adv-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  margin-bottom: 14px;
  border-radius: var(--r);
  background: var(--c-ink);
  color: #fff;
}

.adv-card h3 {
  font-size: 16px;
}

.adv-card p {
  margin-top: 8px;
  font-size: 13px;
  color: var(--c-text-sub);
  line-height: 1.7;
}

/* 服务承诺 */
.promise-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.promise-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 16px 18px;
  border: 1px solid var(--c-line);
  border-radius: var(--r);
  background: #fff;
  font-size: 14px;
  line-height: 1.75;
}

.promise-item .ico {
  margin-top: 4px;
  color: var(--c-success);
  flex: none;
}

@media (max-width: 1024px) {
  .about-split { gap: 28px; }
  .adv-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 768px) {
  .about-split { grid-template-columns: 1fr; }
  .about-text h2 { font-size: 22px; }
  .about-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .promise-list { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .adv-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   联系我们
   ============================================================ */
.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: 28px;
  align-items: start;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gap);
}

.contact-card {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.contact-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
  width: 40px;
  height: 40px;
  border-radius: var(--r);
  background: var(--c-orange-soft);
  color: var(--c-orange-dark);
}

.contact-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--c-muted);
}

.contact-value {
  display: block;
  margin-top: 2px;
  font-size: 17px;
  font-weight: 700;
  color: var(--c-ink);
  word-break: break-all;
}

a.contact-value:hover {
  color: var(--c-orange-dark);
}

.contact-value-plain {
  margin-top: 2px;
  font-size: 15px;
  font-weight: 600;
  color: var(--c-ink);
  line-height: 1.7;
  word-break: break-all;
}

/* 微信面板 */
.wechat-panel {
  text-align: center;
}

.wechat-qr {
  display: block;
  width: 190px;
  height: 190px;
  margin: 16px auto 0;
  border: 1px solid var(--c-line);
  border-radius: var(--r);
  background: #fff;
  object-fit: contain;
}

.wechat-id {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 16px;
  padding: 12px 14px;
  border-radius: var(--r);
  background: var(--c-bg-soft);
  text-align: left;
}

/* 到厂路线 */
.route-card {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 26px;
}

.route-head {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.route-head .ico {
  margin-top: 4px;
  color: var(--c-orange);
  flex: none;
}

.route-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.route-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--c-text-sub);
  line-height: 1.75;
}

.route-no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--c-ink);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
}

.route-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

/* 留言表单 */
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gap);
}

.form-foot {
  flex-wrap: wrap;
  align-items: flex-end;
}

.msg-offline[hidden] {
  display: none !important;
}

.msg-offline-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

@media (max-width: 1024px) {
  .contact-layout { grid-template-columns: 1fr; }
  .route-card { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .contact-grid { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   帮助中心
   ============================================================ */
.faq-layout {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
  gap: 30px;
  align-items: start;
}

.faq-nav {
  position: sticky;
  top: 88px;
}

.faq-nav h3 {
  font-size: 15px;
  margin-bottom: 12px;
}

.faq-nav nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.faq-nav a {
  padding: 9px 12px;
  border-radius: var(--r-sm);
  font-size: 14px;
  color: var(--c-text-sub);
  transition: background 0.2s, color 0.2s;
}

.faq-nav a:hover {
  background: var(--c-bg-soft);
  color: var(--c-ink);
}

.faq-nav a.is-active {
  background: var(--c-orange-soft);
  color: var(--c-orange-dark);
  font-weight: 600;
}

.faq-nav-foot {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--c-line);
}

.faq-main {
  display: flex;
  flex-direction: column;
  gap: 34px;
}

.faq-group {
  scroll-margin-top: 88px;
}

.faq-group-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.faq-group-head h2 {
  font-size: 20px;
}

.faq-group.is-hit .faq-group-head h2 {
  color: var(--c-orange-dark);
}

.acc-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.acc-item {
  border: 1px solid var(--c-line);
  border-radius: var(--r);
  background: #fff;
  overflow: hidden;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.acc-item.is-open {
  border-color: #dfe3e8;
  box-shadow: var(--sh-xs);
}

.acc-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  padding: 15px 18px;
  border: 0;
  background: transparent;
  text-align: left;
  font-size: 15px;
  font-weight: 600;
  color: var(--c-ink);
}

.acc-q:hover {
  background: var(--c-bg-soft);
}

.acc-q .ico {
  flex: none;
  color: var(--c-muted);
  transition: transform 0.22s, color 0.2s;
}

.acc-item.is-open .acc-q .ico {
  transform: rotate(180deg);
  color: var(--c-orange-dark);
}

.acc-a {
  display: none;
  padding: 0 18px 18px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--c-text-sub);
}

.acc-item.is-open .acc-a {
  display: block;
  animation: fadeUp 0.22s ease both;
}

@media (max-width: 1024px) {
  .faq-layout { grid-template-columns: 1fr; gap: 20px; }
  .faq-nav { position: static; }
  .faq-nav nav { flex-direction: row; flex-wrap: wrap; gap: 8px; }
  .faq-nav a { background: var(--c-bg-soft); }
  .faq-main { gap: 26px; }
}