/* ==========================================================================
   southlite.cn · 光功率技术站 / 选型站
   在品牌视觉系统（深黑底 + 532nm 激光绿 + RGB 光谱线）之上，
   追加技术解读区、选型矩阵表、跨站链接区等本站专属模块。
   ========================================================================== */

/* ---------- Header 补充：语言切换 ---------- */
.lang-switch {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-en);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .5px;
}
.lang-switch a { color: var(--text-note); transition: color .18s ease; }
.lang-switch a:hover { color: var(--text-hi); }
.lang-switch a.is-on { color: var(--green); }
.lang-switch .sep { color: #2A3038; }
.nav-ext::after {
  content: "↗";
  margin-left: 5px;
  font-size: 11px;
  color: var(--text-note);
}

/* ---------- 技术解读区 ---------- */
.tech-section {
  padding: 72px 64px 8px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}
.tech-lead {
  max-width: 780px;
  font-size: 14px;
  line-height: 26px;
  color: var(--text-body);
}
.def-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}
.def-card {
  background: var(--bg-card);
  border: 1px solid var(--stroke-card);
  border-radius: 16px;
  padding: 26px 26px 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.def-tag {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.4px;
  color: var(--green);
}
.def-title {
  font-family: var(--font-cn);
  font-size: 17px;
  font-weight: 600;
  color: var(--text-title);
}
.def-text {
  font-size: 13px;
  line-height: 24px;
  color: var(--text-body);
}
.def-note {
  margin-top: 2px;
  padding-top: 12px;
  border-top: 1px solid var(--divider);
  font-size: 12px;
  line-height: 21px;
  color: var(--text-note);
}

/* ---------- 选型矩阵 ---------- */
.matrix-wrap {
  border: 1px solid var(--stroke-card);
  border-radius: 16px;
  background: var(--bg-card);
  overflow-x: auto;
}
table.matrix {
  width: 100%;
  min-width: 860px;
  border-collapse: collapse;
  font-size: 13px;
}
table.matrix th {
  text-align: left;
  padding: 16px 16px;
  font-family: var(--font-cn);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--text-note);
  border-bottom: 1px solid var(--stroke-card);
  white-space: nowrap;
}
table.matrix td {
  padding: 17px 16px;
  color: var(--text-mid);
  border-bottom: 1px solid #15191F;
  white-space: nowrap;
}
table.matrix tr:last-child td { border-bottom: none; }
table.matrix td.model {
  font-family: var(--font-en);
  font-weight: 700;
  color: var(--text-title);
  letter-spacing: .4px;
}
table.matrix td.num {
  font-family: var(--font-en);
  font-weight: 600;
  color: var(--text-title);
}
table.matrix td.num-green { color: var(--green); }
table.matrix tr.is-flag td { background: #0B1410; }
table.matrix tr.is-flag td.model { color: var(--green); }
.matrix-caption {
  padding: 0 2px;
  font-size: 12px;
  line-height: 21px;
  color: var(--text-note);
}

/* ---------- 询价 / 结尾行动区 ---------- */
.cta-block {
  margin: 8px 64px 88px;
  padding: 34px 36px;
  border: 1px solid var(--stroke-card);
  border-radius: 18px;
  background:
    radial-gradient(120% 160% at 100% 0%, rgba(43, 224, 138, .07) 0%, rgba(43, 224, 138, 0) 60%),
    var(--bg-card);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.cta-copy { display: flex; flex-direction: column; gap: 10px; }
.cta-title {
  font-family: var(--font-cn);
  font-size: 22px;
  font-weight: 600;
  color: var(--text-h1);
}
.cta-text {
  font-size: 13px;
  line-height: 23px;
  color: var(--text-body);
  max-width: 620px;
}
.cta-actions { display: flex; gap: 12px; flex: none; }

/* ---------- 页脚跨站链接 ---------- */
.footer-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}
.footer-links-label {
  font-family: var(--font-cn);
  font-size: 12px;
  letter-spacing: .5px;
  color: var(--text-note);
  margin-right: 4px;
}
.link-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border: 1px solid var(--stroke-ghost);
  border-radius: 999px;
  background: var(--bg-btn-ghost);
  font-size: 12px;
  color: var(--text-mid);
  transition: color .18s ease, border-color .18s ease;
}
.link-pill:hover { color: var(--green); border-color: var(--green); }
.link-pill span { color: var(--text-note); font-family: var(--font-en); font-size: 11px; }
.link-pill:hover span { color: var(--green); opacity: .8; }

/* ---------- 响应式 ---------- */
@media (max-width: 1240px) {
  .def-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .def-card:last-child { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
  .tech-section { padding: 56px 32px 4px; }
  .def-grid { grid-template-columns: 1fr; }
  .def-card:last-child { grid-column: auto; }
  .cta-block { margin: 8px 32px 64px; flex-direction: column; align-items: flex-start; padding: 28px 26px; }
  .cta-actions { width: 100%; flex-wrap: wrap; }
}

@media (max-width: 560px) {
  .cta-title { font-size: 19px; }
}

/* ==========================================================================
   2026-11 追加：公司介绍 / 实测视频 / 产品资料下载
   ========================================================================== */

/* ---------- 公司介绍 ---------- */
.about-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

/* ---------- 实测视频 ---------- */
.video-wrap {
  border: 1px solid var(--stroke-card);
  border-radius: 16px;
  overflow: hidden;
  background: #000;
  line-height: 0;
}
.video-player {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  background: #000;
}

/* ---------- 产品资料 ---------- */
.dl-sub {
  font-family: var(--font-cn);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1.2px;
  color: var(--text-note);
}
.dl-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}
.dl-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--stroke-card);
  border-radius: 12px;
  overflow: hidden;
  background: var(--bg-card);
  transition: border-color .18s ease, transform .18s ease;
}
.dl-card:hover { border-color: var(--green); transform: translateY(-2px); }
.dl-card img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3360 / 2376;
  object-fit: cover;
  object-position: center top;
  background: #F7F9FB;
}
.dl-meta {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 12px 14px 14px;
}
.dl-name {
  font-family: var(--font-cn);
  font-size: 12px;
  font-weight: 600;
  line-height: 18px;
  color: var(--text-title);
}
.dl-tag {
  font-family: var(--font-en);
  font-size: 11px;
  line-height: 16px;
  color: var(--text-note);
}

/* ---------- 产品卡改用资料页预览图 ---------- */
a.card-image {
  height: 200px;
  padding-bottom: 0;
  align-items: stretch;
  justify-content: flex-start;
  background: #0A0D11;
}
a.card-image img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  transition: transform .35s ease;
}
a.card-image:hover img { transform: scale(1.03); }

/* ---------- 响应式补充 ---------- */
@media (max-width: 1240px) {
  .about-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .dl-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; }
  .dl-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 560px) {
  .dl-grid { grid-template-columns: 1fr; }
  .dl-name { font-size: 13px; }
}


/* ---------- 产品卡双资料链接（合并下载区后） ---------- */
.card-links { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 4px; }
.card-link--en { font-family: var(--font-en); color: var(--text-note); }