/* ==========================================================================
   锦鲤氏科技 · 设计系统
   简洁大气：单一强调色、克制的装饰、更充裕的留白
   ========================================================================== */
:root {
  --bg: #0a0e17;
  --bg-1: #0e1424;
  --bg-panel: #121a2e;
  --bg-panel-2: #18223a;
  --line: rgba(238, 241, 247, 0.07);
  --line-strong: rgba(238, 241, 247, 0.15);
  --ink: #eef1f7;
  --ink-dim: #98a4ba;
  --ink-faint: #626d87;
  --accent: #c98a3e;
  --accent-soft: rgba(201, 138, 62, 0.12);
  --accent-line: rgba(201, 138, 62, 0.38);
  --teal: #3fa9a0;
  --teal-soft: rgba(63, 169, 160, 0.12);

  --font-display: "Manrope", -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --container-max: 1200px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  overflow-x: clip;
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}

h1, h2, h3, h4, .display-font {
  font-family: var(--font-display), var(--font-body);
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--ink);
}

.h1 {
  font-size: clamp(1.95rem, 3.6vw, 2.85rem);
  line-height: 1.25;
  font-weight: 700;
}

a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent); }

::selection { background: var(--accent); color: var(--bg); }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}

/* ==========================================================================
   导航
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1030;
  background: rgba(10, 14, 23, 0.82);
  backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.navbar { padding: 0.7rem 0; }

.navbar-brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.12rem;
  color: var(--ink) !important;
  display: flex;
  align-items: center;
  gap: 10px;
}
.navbar-brand .brand-mark { width: 30px; height: 30px; display: block; }
.navbar-brand .brand-en {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.68rem;
  color: var(--ink-faint);
  letter-spacing: 0.14em;
  display: block;
  margin-top: 1px;
}

.nav-link.custom-link {
  color: var(--ink-dim) !important;
  font-weight: 500;
  padding: 0.5rem 1.05rem !important;
  position: relative;
  transition: color 0.2s ease;
}
.nav-link.custom-link.active,
.nav-link.custom-link:hover { color: var(--ink) !important; }
.nav-link.custom-link.active::after {
  content: "";
  position: absolute;
  left: 1.05rem; right: 1.05rem; bottom: 0.2rem;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

.btn-nav-cta {
  background: var(--accent);
  color: #17120a !important;
  font-weight: 600;
  padding: 0.55rem 1.15rem;
  border-radius: 8px;
  font-size: 0.9rem;
  transition: background 0.2s ease;
}
.btn-nav-cta:hover { background: #dba15a; color: #17120a !important; }

.navbar-toggler { border-color: var(--line-strong); }
.navbar-toggler-icon {
  filter: invert(1) grayscale(1) brightness(1.4);
}

/* ==========================================================================
   通用组件
   ========================================================================== */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.18em;
  color: var(--ink-dim);
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  margin-bottom: 1rem;
}
.eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--accent);
}

.section { padding: 7rem 0; position: relative; }
.section-tight { padding: 4.5rem 0; }
.section-alt { background: var(--bg-1); }
.section-border-top { border-top: 1px solid var(--line); }

.lead-muted { color: var(--ink-dim); font-size: 1.08rem; line-height: 1.85; }

.btn-brand, .btn-outline-brand {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  font-weight: 600;
  padding: 0.8rem 1.8rem;
  border-radius: 8px;
  transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}
.btn-brand {
  background: var(--accent);
  border: 1px solid var(--accent);
  color: #17120a;
}
.btn-brand:hover {
  background: #dba15a;
  border-color: #dba15a;
  color: #17120a;
  transform: translateY(-2px);
}
.btn-outline-brand {
  background: transparent;
  border: 1px solid var(--line-strong);
  color: var(--ink-dim);
  font-weight: 500;
}
.btn-outline-brand:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

.panel {
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: 14px;
}

.icon-box {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--accent-soft);
  border: 1px solid var(--accent-line);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 1.15rem;
}

.card-tech {
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 2.2rem;
  height: 100%;
  transition: border-color 0.25s ease, transform 0.25s ease, background-color 0.25s ease;
}
.card-tech:hover {
  border-color: var(--accent-line);
  background: var(--bg-panel-2);
  transform: translateY(-4px);
}
.card-tech .tag-code {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--ink-faint);
  display: inline-block;
  margin-bottom: 1.4rem;
}
.card-tech h3 { font-size: 1.22rem; margin-bottom: 0.7rem; }
.card-tech p {
  color: var(--ink-dim);
  font-size: 0.96rem;
  line-height: 1.75;
  margin-bottom: 0;
}
.card-tech .icon-box {
  width: 48px;
  height: 48px;
  font-size: 1.3rem;
  margin-bottom: 1.2rem;
}
.product-shot {
  position: relative;
  width: 100%;
  margin: 0 auto 1.4rem;
  border-radius: 8px;
  overflow: hidden;
  aspect-ratio: 4 / 3;
}
.product-shot img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.product-shot::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10, 14, 23, 0.3), rgba(10, 14, 23, 0.5));
  pointer-events: none;
}

.divider-line { height: 1px; background: var(--line); border: 0; margin: 0; }

.stat-num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.2rem, 4vw, 3rem);
  color: var(--ink);
  line-height: 1;
}
.stat-label {
  font-size: 0.88rem;
  color: var(--ink-faint);
  letter-spacing: 0.03em;
  margin-top: 0.65rem;
}

.badge-soft {
  display: inline-block;
  background: transparent;
  border: 1px solid var(--line-strong);
  color: var(--ink-dim);
  font-weight: 500;
  font-size: 0.85rem;
  padding: 0.5rem 1.05rem;
  border-radius: 100px;
  transition: border-color 0.2s ease, color 0.2s ease;
}
.badge-soft:hover { border-color: var(--accent); color: var(--accent); }

/* 解决方案 / 产品中心 Hero 内跳转按钮：更突出的主按钮样式 */
.hero-solutions .badge-soft,
.hero-products .badge-soft {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  background: var(--bg-panel);
  border: 1px solid var(--accent-line);
  color: var(--ink);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.72rem 1.4rem;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}
.hero-solutions .badge-soft::before,
.hero-products .badge-soft::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}
.hero-solutions .badge-soft:hover,
.hero-products .badge-soft:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #17120a;
  transform: translateY(-2px);
}
.hero-solutions .badge-soft:hover::before,
.hero-products .badge-soft:hover::before {
  background: #17120a;
}

table.table-tech {
  --bs-table-bg: transparent;
  --bs-table-color: var(--ink-dim);
  color: var(--ink-dim);
  border-color: var(--line);
}
table.table-tech th {
  color: var(--ink-dim);
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--line-strong) !important;
  padding: 0.85rem 1rem;
}
table.table-tech td {
  color: var(--ink-dim);
  border-color: var(--line) !important;
  vertical-align: middle;
  padding: 0.9rem 1rem;
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  position: relative;
  overflow: hidden;
  padding: 7rem 0 6rem;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(ellipse 60% 50% at 78% -10%, rgba(201, 138, 62, 0.1), transparent 62%),
    radial-gradient(ellipse 50% 45% at 10% 115%, rgba(201, 138, 62, 0.05), transparent 60%);
}
.hero .hero-kicker {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink-faint);
  letter-spacing: 0.24em;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.8rem;
}
.hero .hero-kicker::before {
  content: "";
  width: 30px;
  height: 1px;
  background: var(--accent);
}
.hero h1 {
  font-size: clamp(2.35rem, 4.6vw, 3.7rem);
  line-height: 1.18;
  letter-spacing: -0.02em;
  margin: 1.2rem 0 1.5rem;
}
.hero h1 .accent-underline {
  background-image: linear-gradient(var(--accent), var(--accent));
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 100% 3px;
}

/* 首页 Hero 背景图：左侧加深渐变遮罩保证文字可读性 */
.hero-home {
  background-color: var(--bg);
  background-image:
    linear-gradient(90deg, rgba(10, 14, 23, 0.92) 0%, rgba(10, 14, 23, 0.6) 38%, rgba(10, 14, 23, 0.2) 72%, rgba(10, 14, 23, 0.05) 100%),
    linear-gradient(180deg, rgba(10, 14, 23, 0) 55%, rgba(10, 14, 23, 0.5) 100%),
    url("../img/sliders/1600x600-006.webp");
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
}

/* 关于我们 Hero 背景图：整体加深遮罩保证文字可读性 */
.hero-about {
  background-color: var(--bg);
  background-image:
    linear-gradient(180deg, rgba(10, 14, 23, 0.9) 0%, rgba(10, 14, 23, 0.74) 50%, rgba(10, 14, 23, 0.62) 100%),
    url("../img/sliders/1600x600-001.webp");
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
}

/* 解决方案 Hero 背景图 */
.hero-solutions {
  background-color: var(--bg);
  background-image:
    linear-gradient(90deg, rgba(10, 14, 23, 0.92) 0%, rgba(10, 14, 23, 0.66) 40%, rgba(10, 14, 23, 0.3) 75%, rgba(10, 14, 23, 0.08) 100%),
    linear-gradient(180deg, rgba(10, 14, 23, 0) 60%, rgba(10, 14, 23, 0.5) 100%),
    url("../img/sliders/1600x600-004.webp");
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
}

/* 产品中心 Hero 背景图 */
.hero-products {
  background-color: var(--bg);
  background-image:
    linear-gradient(90deg, rgba(10, 14, 23, 0.92) 0%, rgba(10, 14, 23, 0.66) 40%, rgba(10, 14, 23, 0.3) 75%, rgba(10, 14, 23, 0.08) 100%),
    linear-gradient(180deg, rgba(10, 14, 23, 0) 60%, rgba(10, 14, 23, 0.5) 100%),
    url("../img/sliders/1600x600-007.webp");
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
}

/* 联系我们 Hero 背景图 */
.hero-contact {
  background-color: var(--bg);
  background-image:
    linear-gradient(90deg, rgba(10, 14, 23, 0.92) 0%, rgba(10, 14, 23, 0.66) 40%, rgba(10, 14, 23, 0.3) 75%, rgba(10, 14, 23, 0.08) 100%),
    linear-gradient(180deg, rgba(10, 14, 23, 0) 60%, rgba(10, 14, 23, 0.5) 100%),
    url("../img/sliders/1600x600-003.webp");
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
}

.hero-page {
  min-height: 600px;
  display: flex;
  align-items: center;
  padding: 5rem 0 4.5rem;
}
.hero-page h1 { font-size: clamp(1.9rem, 3.4vw, 2.7rem); }

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: var(--bg-1);
  border-top: 1px solid var(--line);
  padding: 4.5rem 0 2rem;
  color: var(--ink-dim);
}
.site-footer h6 {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--ink-dim);
  text-transform: uppercase;
  margin-bottom: 1.2rem;
}
.site-footer a.footer-link {
  color: var(--ink-faint);
  display: block;
  padding: 0.3rem 0;
  font-size: 0.93rem;
  transition: color 0.2s ease;
}
.site-footer a.footer-link:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid var(--line);
  margin-top: 3.2rem;
  padding-top: 1.7rem;
  font-size: 0.82rem;
  color: var(--ink-faint);
}
.footer-icp {
  text-align: center;
  margin-top: 1.2rem;
  font-size: 0.82rem;
}
.footer-icp a {
  color: var(--ink-faint);
  transition: color 0.2s ease;
}
.footer-icp a:hover { color: var(--accent); }

/* ==========================================================================
   合作伙伴
   ========================================================================== */
.partner-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1.1rem;
}
.partner-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  background: var(--bg-panel);
  border: 1px solid var(--accent-line);
  border-radius: 12px;
  padding: 0.9rem 1.7rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.08rem;
  color: var(--ink);
  letter-spacing: 0.01em;
  white-space: nowrap;
}
.partner-chip i {
  color: var(--accent);
  font-size: 1.35rem;
  line-height: 1;
}
.partner-chip span {
  color: var(--accent);
}

/* ==========================================================================
   客户 logo 墙
   ========================================================================== */
.customer-card {
  background: #ffffff;
  border-radius: 10px;
  height: 78px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 1rem;
}
.customer-card img {
  max-width: 100%;
  max-height: 42px;
  width: auto;
  height: auto;
  object-fit: contain;
  filter: grayscale(0);
  opacity: 1;
  transition: filter 0.25s ease, opacity 0.25s ease;
}
.customer-card:hover img {
  filter: grayscale(1);
  opacity: 0.82;
}

/* ==========================================================================
   发展历程
   ========================================================================== */
.timeline { position: relative; padding-left: 2.2rem; }
.timeline::before {
  content: "";
  position: absolute;
  left: 6px; top: 8px; bottom: 8px;
  width: 1px;
  background: var(--line-strong);
}
.timeline-item { position: relative; padding-bottom: 2.5rem; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: "";
  position: absolute;
  left: -2.2rem; top: 6px;
  width: 13px; height: 13px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--accent);
}
.timeline-year {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  margin-bottom: 0.35rem;
}

/* ==========================================================================
   锚点偏移
   ========================================================================== */
.anchor-offset { scroll-margin-top: 100px; }

/* ==========================================================================
   联系页
   ========================================================================== */
.contact-card {
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1.8rem 2rem;
}
.contact-card .i {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

/* ==========================================================================
   表单
   ========================================================================== */
.form-control, .form-select {
  background: var(--bg-1);
  border: 1px solid var(--line-strong);
  color: var(--ink);
  padding: 0.75rem 1rem;
  border-radius: 8px;
}
.form-control:focus, .form-select:focus {
  background: var(--bg-1);
  color: var(--ink);
  border-color: var(--accent);
  box-shadow: 0 0 0 0.2rem var(--accent-soft);
}
.form-control::placeholder { color: var(--ink-faint); }
.form-label {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--ink-dim);
  text-transform: uppercase;
  margin-bottom: 0.45rem;
}

/* ==========================================================================
   工具类
   ========================================================================== */
.text-ink { color: var(--ink) !important; }
.text-ink-dim { color: var(--ink-dim) !important; }
.text-accent { color: var(--accent) !important; }
.text-teal { color: var(--teal) !important; }
.bg-panel { background: var(--bg-panel) !important; }
.bg-panel-2 { background: var(--bg-panel-2) !important; }
.border-line { border-color: var(--line) !important; }
.rounded-tech { border-radius: 14px !important; }

@media (max-width: 991.98px) {
  .section { padding: 4.5rem 0; }
  .hero { padding: 5rem 0 4.5rem; }
  .hero-page { padding: 3.6rem 0 3.2rem; }
  .navbar-collapse { padding-top: 0.75rem; }
  .hero-home {
    background-image:
      linear-gradient(180deg, rgba(10, 14, 23, 0.9) 0%, rgba(10, 14, 23, 0.72) 55%, rgba(10, 14, 23, 0.62) 100%),
      url("../img/sliders/1600x600-006.webp");
  }
}