/*!
 * Theme: tech (简约科技)
 * Self-contained stylesheet — no Bootstrap / Tailwind runtime required.
 */

/* ============================================================
   1. Design tokens
   ============================================================ */
:root {
  --ink: #050b08;
  --ink-soft: #0a1410;
  --ink-card: #0f1a14;
  --surface: #ffffff;
  --surface-2: #f5f8fd;
  --text: #0d1526;
  --text-soft: #3d4a63;
  --muted: #6b7893;
  --line: rgba(13, 21, 38, 0.10);
  --line-dark: rgba(255, 255, 255, 0.10);

  --brand: #127339;
  --brand-deep: #0a4523;
  --cyan: #35b96e;
  --grad: linear-gradient(120deg, #35b96e 0%, #157a3f 100%);
  --grad-soft: linear-gradient(120deg, rgba(18, 115, 57, 0.10) 0%, rgba(46, 194, 126, 0.10) 100%);

  --radius-sm: 3px;
  --radius: 3px;
  --radius-lg: 3px;

  --shadow-sm: 0 1px 2px rgba(13, 21, 38, 0.04), 0 4px 16px rgba(13, 21, 38, 0.04);
  --shadow: 0 10px 40px rgba(13, 21, 38, 0.08);
  --shadow-lg: 0 24px 70px rgba(13, 21, 38, 0.14);
  --shadow-brand: 0 14px 38px rgba(10, 69, 35, 0.30);

  --container: 1240px;
  --header-h: 72px;

  --font: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong",
    "SimSun", Georgia, serif;
  --font-display: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong",
    "SimSun", Georgia, serif;
  --ease: cubic-bezier(0.22, 0.68, 0.32, 1);
}

/* ============================================================
   2. Base / reset
   ============================================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--surface);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  display: block;
  border: 0;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color .25s var(--ease), opacity .25s var(--ease);
}

h1, h2, h3, h4, h5 {
  margin: 0;
  font-weight: 700;
  line-height: 1.32;
  letter-spacing: .01em;
  color: inherit;
}

p {
  margin: 0;
}

ul, ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

::selection {
  background: rgba(18, 115, 57, .18);
}

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.num {
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum";
}

/* ============================================================
   3. Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 30px;
  border: 1px solid transparent;
  border-radius: 3px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .06em;
  cursor: pointer;
  white-space: nowrap;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease),
    background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease);
}

.btn svg {
  width: 16px;
  height: 16px;
  flex: none;
}

.btn-primary {
  background: linear-gradient(135deg, #148542 0%, #0d5c2e 100%);
  color: #fff;
  box-shadow: var(--shadow-brand);
}

.btn-primary:hover {
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 18px 46px rgba(18, 115, 57, 0.42);
}

.btn-ghost {
  background: rgba(255, 255, 255, .06);
  border-color: var(--line-dark);
  color: #fff;
  backdrop-filter: blur(6px);
}

.btn-ghost:hover {
  color: #fff;
  border-color: rgba(255, 255, 255, .34);
  background: rgba(255, 255, 255, .12);
  transform: translateY(-2px);
}

.btn-outline {
  background: #fff;
  border-color: var(--line);
  color: var(--text);
}

.btn-outline:hover {
  color: var(--brand);
  border-color: rgba(18, 115, 57, .45);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.btn-sm {
  height: 40px;
  padding: 0 18px;
  font-size: 14px;
}

/* ============================================================
   4. Header
   ============================================================ */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 90;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: transparent;
  transition: height .3s var(--ease), background .3s var(--ease),
    box-shadow .3s var(--ease), backdrop-filter .3s var(--ease);
}

.site-header.is-scrolled {
  height: 64px;
  background: rgba(255, 255, 255, .82);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  box-shadow: 0 1px 0 var(--line), 0 8px 30px rgba(13, 21, 38, .04);
}

.header-inner {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 32px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: none;
}

.brand img {
  height: 40px;
  width: auto;
  object-fit: contain;
}

/* 双 Logo：深色页头用白标，滚动后 / 浅色页头切回原标 */
.brand-logo--dark {
  display: none;
}

body.light-top .site-header:not(.is-scrolled) .brand-logo--light,
.site-header.is-scrolled .brand-logo--light {
  display: none;
}

body.light-top .site-header:not(.is-scrolled) .brand-logo--dark,
.site-header.is-scrolled .brand-logo--dark {
  display: block;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

.primary-nav a {
  position: relative;
  display: block;
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  color: rgba(255, 255, 255, .78);
  border-radius: 3px;
  transition: color .25s var(--ease);
}

.primary-nav a::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--grad);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .28s var(--ease);
}

.primary-nav a:hover,
.primary-nav a.active {
  color: #fff;
}

.primary-nav a:hover::after,
.primary-nav a.active::after {
  transform: scaleX(1);
}

.primary-nav a svg {
  width: 13px;
  height: 13px;
  margin-left: 3px;
  vertical-align: -1px;
  opacity: .6;
}

.primary-nav .nav-item {
  position: relative;
}

/* 悬停桥：避免移向下拉面板时因间隙丢失 hover */
.primary-nav .nav-item::before {
  content: "";
  position: absolute;
  left: -8px;
  right: -8px;
  top: 100%;
  height: 18px;
}

.primary-nav .nav-dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translate(-50%, 10px);
  min-width: 224px;
  padding: 12px;
  border: 1px solid var(--line);
  border-top: 2px solid var(--brand);
  border-radius: 3px;
  background: #fff;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: opacity .25s var(--ease), transform .25s var(--ease), visibility .25s var(--ease);
}

.primary-nav .nav-item:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}

.primary-nav .nav-dropdown a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 13px 18px;
  border-radius: 3px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  white-space: nowrap;
  transition: background .25s var(--ease), color .25s var(--ease), padding-left .25s var(--ease);
}

.primary-nav .nav-dropdown a::after {
  content: "";
  display: none;
}

.primary-nav .nav-dropdown a::before {
  content: "";
  flex: none;
  width: 6px;
  height: 6px;
  margin-right: 12px;
  border-radius: 50%;
  background: var(--brand);
  opacity: 0;
  transform: scale(.4);
  transition: opacity .25s var(--ease), transform .25s var(--ease);
}

.primary-nav .nav-dropdown a:hover {
  background: var(--surface-2);
  color: var(--brand);
  padding-left: 22px;
}

.primary-nav .nav-dropdown a:hover::before {
  opacity: 1;
  transform: scale(1);
}

.header-action {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: none;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(255, 255, 255, .28);
  border-radius: 3px;
  background: rgba(255, 255, 255, .08);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  padding: 0;
  transition: border-color .3s var(--ease), background .3s var(--ease);
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: #fff;
  border-radius: 2px;
  transition: transform .3s var(--ease), opacity .2s var(--ease), background .3s var(--ease);
}

/* 滚动后 / 浅色顶部页面：切换为深色文字 */

.site-header.is-scrolled .primary-nav a,
body.light-top .site-header:not(.is-scrolled) .primary-nav a {
  color: var(--text-soft);
}

.site-header.is-scrolled .primary-nav a:hover,
.site-header.is-scrolled .primary-nav a.active,
body.light-top .site-header:not(.is-scrolled) .primary-nav a:hover,
body.light-top .site-header:not(.is-scrolled) .primary-nav a.active {
  color: var(--text);
}

.site-header.is-scrolled .nav-toggle,
body.light-top .site-header:not(.is-scrolled) .nav-toggle {
  border-color: var(--line);
  background: rgba(255, 255, 255, .6);
}

.site-header.is-scrolled .nav-toggle span,
body.light-top .site-header:not(.is-scrolled) .nav-toggle span {
  background: var(--text);
}

.site-header.nav-open .nav-toggle span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.site-header.nav-open .nav-toggle span:nth-child(2) {
  opacity: 0;
}

.site-header.nav-open .nav-toggle span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

.mobile-nav {
  position: fixed;
  inset: var(--header-h) 0 auto 0;
  z-index: 89;
  display: none;
  padding: 12px 24px 28px;
  background: rgba(255, 255, 255, .97);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.mobile-nav.open {
  display: block;
  animation: navDrop .28s var(--ease);
}

.mobile-nav a {
  display: block;
  padding: 14px 4px;
  font-size: 16px;
  font-weight: 500;
  border-bottom: 1px solid var(--line);
}

.mobile-nav .mobile-cta {
  margin-top: 20px;
  width: 100%;
}

@keyframes navDrop {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: none; }
}

/* ============================================================
   5. Hero
   ============================================================ */
.hero {
  position: relative;
  padding: calc(var(--header-h) + 96px) 0 0;
  background: var(--ink);
  color: #fff;
  overflow: hidden;
  isolation: isolate;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(900px 520px at 18% 8%, rgba(18, 115, 57, .30), transparent 62%),
    radial-gradient(760px 480px at 84% 22%, rgba(46, 194, 126, .14), transparent 65%),
    linear-gradient(180deg, #050b08 0%, #07130d 55%, #050b08 100%);
}

.hero-grid {
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, .055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, .055) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(1000px 620px at 50% 0%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(1000px 620px at 50% 0%, #000 20%, transparent 78%);
}

.hero-inner {
  position: relative;
  max-width: 940px;
  margin-inline: auto;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  height: 34px;
  padding: 0 16px 0 12px;
  margin-bottom: 28px;
  border: 1px solid var(--line-dark);
  border-radius: 3px;
  background: rgba(255, 255, 255, .05);
  font-size: 13px;
  letter-spacing: .04em;
  color: rgba(255, 255, 255, .82);
  backdrop-filter: blur(8px);
}

.hero-badge .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(46, 194, 126, .18);
  animation: pulse 2.4s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .35; }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(38px, 6vw, 76px);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: .02em;
  text-wrap: balance;
}

.hero-title .grad {
  position: relative;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-slogan {
  margin-top: 26px;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.2vw, 27px);
  font-weight: 600;
  letter-spacing: .08em;
  color: rgba(255, 255, 255, .92);
}

.hero-slogan em {
  font-style: normal;
  color: var(--cyan);
}

.hero-desc {
  max-width: 640px;
  margin: 22px auto 0;
  font-size: 16px;
  line-height: 2;
  letter-spacing: .01em;
  color: rgba(255, 255, 255, .62);
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  margin-top: 38px;
  flex-wrap: wrap;
}

.hero-visual {
  position: relative;
  margin-top: 72px;
  border-radius: 3px 3px 0 0;
  overflow: hidden;
  border: 1px solid var(--line-dark);
  border-bottom: 0;
  box-shadow: 0 -12px 80px rgba(10, 69, 35, .28);
  background: var(--ink-card);
}

.hero-visual img {
  width: 100%;
  height: clamp(240px, 34vw, 460px);
  object-fit: cover;
  opacity: .92;
}

.hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(5, 11, 8, .1) 0%, rgba(5, 11, 8, .78) 100%);
  pointer-events: none;
}

.hero-metrics {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line-dark);
  border-top: 1px solid var(--line-dark);
}

.hero-metrics div {
  padding: 22px 12px;
  background: rgba(7, 16, 11, .72);
  backdrop-filter: blur(10px);
  text-align: center;
}

.hero-metrics b {
  display: block;
  font-size: clamp(20px, 2.4vw, 30px);
  font-weight: 700;
  letter-spacing: -.02em;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-metrics span {
  font-size: 13px;
  color: rgba(255, 255, 255, .6);
  letter-spacing: .04em;
}

/* ============================================================
   6. Sections
   ============================================================ */
.section {
  padding: 108px 0;
}

.section-tint {
  background: var(--surface-2);
}

.section-sm {
  padding: 64px 0 108px;
}

.section-dark {
  background: var(--ink);
  color: #fff;
}

[id] {
  scroll-margin-top: calc(var(--header-h) + 12px);
}

.section-head {
  max-width: 760px;
  margin: 0 auto 64px;
  text-align: center;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .26em;
  text-transform: uppercase;
  color: var(--brand);
}

.section-tag::before,
.section-tag::after {
  content: "";
  width: 26px;
  height: 1px;
  background: currentColor;
  opacity: .45;
}

.section-dark .section-tag {
  color: var(--cyan);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(28px, 3.6vw, 44px);
  font-weight: 700;
  letter-spacing: .01em;
  text-wrap: balance;
}

.section-desc {
  margin-top: 18px;
  font-size: 16px;
  line-height: 1.9;
  color: var(--muted);
}

.section-dark .section-desc {
  color: rgba(255, 255, 255, .62);
}

.section-head .divider {
  width: 52px;
  height: 2px;
  margin: 24px auto 0;
  border-radius: 2px;
  background: var(--grad);
}

/* capability cards */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  position: relative;
  padding: 34px 30px 32px;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: #fff;
  overflow: hidden;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s var(--ease);
}

.feature-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: var(--grad);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s var(--ease);
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: rgba(18, 115, 57, .28);
  box-shadow: var(--shadow);
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-icon {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border-radius: 3px;
  background: var(--grad-soft);
  color: var(--brand);
  margin-bottom: 20px;
}

.feature-icon svg {
  width: 24px;
  height: 24px;
}

.feature-card h3 {
  font-size: 19px;
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 15px;
  color: var(--muted);
  line-height: 1.85;
}

/* showcase rows */
.showcase-row {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 60px;
  align-items: center;
}

.showcase-row + .showcase-row {
  margin-top: 84px;
}

.showcase-row.reverse .showcase-media {
  order: -1;
}

.showcase-media {
  position: relative;
  border-radius: 3px;
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-lg);
}

.showcase-media img {
  width: 100%;
  height: 340px;
  object-fit: cover;
  transition: transform .8s var(--ease);
}

.showcase-media:hover img {
  transform: scale(1.04);
}

.showcase-body h3 {
  font-family: var(--font-display);
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 700;
  letter-spacing: .01em;
  margin-bottom: 16px;
}

.showcase-body p {
  color: var(--muted);
  line-height: 1.9;
}

.points {
  margin-top: 26px;
  display: grid;
  gap: 14px;
}

.points li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 15px;
  color: var(--text-soft);
}

.points li svg {
  width: 20px;
  height: 20px;
  flex: none;
  margin-top: 3px;
  color: var(--brand);
}

/* process steps */
.step-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  position: relative;
}

.step {
  position: relative;
  padding: 30px 24px;
  border: 1px solid var(--line-dark);
  border-radius: 3px;
  background: linear-gradient(180deg, rgba(255, 255, 255, .05), rgba(255, 255, 255, .015));
}

.step .step-no {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .2em;
  color: var(--cyan);
}

.step h4 {
  margin: 12px 0 8px;
  font-size: 18px;
  color: #fff;
}

.step p {
  font-size: 14px;
  color: rgba(255, 255, 255, .58);
  line-height: 1.8;
}

/* news */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.news-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: #fff;
  overflow: hidden;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s var(--ease);
}

.news-card:hover {
  transform: translateY(-6px);
  border-color: rgba(18, 115, 57, .26);
  box-shadow: var(--shadow);
}

.news-thumb {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--surface-2);
}

.news-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .7s var(--ease);
}

.news-card:hover .news-thumb img {
  transform: scale(1.06);
}

.news-body {
  padding: 22px 24px 26px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.news-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 13px;
  color: var(--muted);
}

.news-meta .chip {
  padding: 2px 10px;
  border-radius: 3px;
  background: var(--grad-soft);
  color: var(--brand);
  font-size: 12px;
  font-weight: 600;
}

.news-card h3 {
  margin: 12px 0 10px;
  font-size: 18px;
  line-height: 1.55;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card:hover h3 {
  color: var(--brand);
}

.news-card p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.8;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-more {
  margin-top: 18px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--brand);
}

.news-more svg {
  width: 15px;
  height: 15px;
  transition: transform .3s var(--ease);
}

.news-card:hover .news-more svg {
  transform: translateX(4px);
}

.empty-state {
  padding: 80px 0;
  text-align: center;
  color: var(--muted);
}

.empty-state img {
  width: 200px;
  margin: 0 auto 16px;
  opacity: .5;
}

/* CTA band */
.cta-band {
  position: relative;
  padding: 84px 0;
  background: var(--ink);
  overflow: hidden;
  text-align: center;
  color: #fff;
}

.cta-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(700px 380px at 20% 120%, rgba(18, 115, 57, .4), transparent 60%),
    radial-gradient(700px 380px at 82% -20%, rgba(46, 194, 126, .28), transparent 60%);
}

.cta-band .container {
  position: relative;
}

.cta-band h2 {
  font-family: var(--font-display);
  font-size: clamp(26px, 3.4vw, 42px);
  font-weight: 700;
  letter-spacing: .02em;
  margin-bottom: 16px;
}

.cta-band p {
  max-width: 620px;
  margin: 0 auto;
  color: rgba(255, 255, 255, .66);
}

.cta-band .hero-actions {
  margin-top: 32px;
}

/* contact cards */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.contact-card {
  padding: 28px 24px;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: #fff;
  text-align: center;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}

.contact-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-sm);
}

.contact-card .ci {
  width: 46px;
  height: 46px;
  margin: 0 auto 16px;
  display: grid;
  place-items: center;
  border-radius: 3px;
  background: var(--grad-soft);
  color: var(--brand);
}

.contact-card .ci svg {
  width: 20px;
  height: 20px;
}

.contact-card .label {
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--muted);
}

.contact-card .value {
  margin-top: 6px;
  font-size: 16px;
  font-weight: 600;
  word-break: break-all;
}

.contact-card a:hover {
  color: var(--brand);
}

/* ============================================================
   7. Page banner (内页)
   ============================================================ */
.page-banner {
  position: relative;
  padding: calc(var(--header-h) + 72px) 0 72px;
  background: var(--ink);
  color: #fff;
  overflow: hidden;
  text-align: center;
}

.page-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(760px 420px at 15% 0%, rgba(18, 115, 57, .34), transparent 62%),
    radial-gradient(700px 400px at 88% 30%, rgba(46, 194, 126, .2), transparent 62%);
}

.page-banner::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, .05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, .05) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(180deg, #000, transparent 85%);
  -webkit-mask-image: linear-gradient(180deg, #000, transparent 85%);
}

.page-banner .container {
  position: relative;
  z-index: 1;
}

.page-banner h1 {
  font-family: var(--font-display);
  font-size: clamp(28px, 3.8vw, 46px);
  font-weight: 700;
  letter-spacing: .02em;
}

.breadcrumb {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
  font-size: 14px;
  color: rgba(255, 255, 255, .55);
}

.breadcrumb a:hover {
  color: #fff;
}

.breadcrumb .sep {
  opacity: .45;
}

/* ============================================================
   8. Article list / detail
   ============================================================ */
.article-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  align-items: start;
}

.article-list {
  display: grid;
  gap: 20px;
}

.article-item {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 24px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: #fff;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}

.article-item:hover {
  transform: translateY(-4px);
  border-color: rgba(18, 115, 57, .24);
  box-shadow: var(--shadow-sm);
}

.article-item .thumb {
  border-radius: 3px;
  overflow: hidden;
  background: var(--surface-2);
  aspect-ratio: 4 / 3;
}

.article-item .thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.article-item .body {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.article-item h3 {
  font-size: 19px;
  line-height: 1.6;
}

.article-item:hover h3 {
  color: var(--brand);
}

.article-item .summary {
  margin-top: 10px;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.8;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-item .meta {
  margin-top: 14px;
  display: flex;
  gap: 20px;
  font-size: 13px;
  color: var(--muted);
}

.article-item .meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.article-item .meta svg {
  width: 14px;
  height: 14px;
}

.pagination-wrap {
  margin-top: 36px;
  display: flex;
  justify-content: center;
}

.pagination-wrap .pager {
  display: flex;
  gap: 8px;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
}

.pagination-wrap .pager-item {
  min-width: 38px;
  height: 38px;
  padding: 0 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 3px;
  font-size: 14px;
  color: var(--text-soft);
  background: #fff;
  transition: color .25s var(--ease), border-color .25s var(--ease), background .25s var(--ease);
}

.pagination-wrap .pager-item svg {
  width: 14px;
  height: 14px;
}

.pagination-wrap a.pager-item:hover {
  color: var(--brand);
  border-color: rgba(18, 115, 57, .45);
}

.pagination-wrap .pager-item.active {
  background: var(--grad);
  border-color: transparent;
  color: #fff;
  font-weight: 600;
}

.pagination-wrap .pager-item.disabled {
  color: #b3bccd;
  background: var(--surface-2);
}

/* sidebar */
.side-card {
  position: sticky;
  top: calc(var(--header-h) + 20px);
  display: grid;
  gap: 20px;
}

.side-box {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: #fff;
}

.side-title {
  font-size: 16px;
  margin-bottom: 16px;
  padding-left: 12px;
  border-left: 3px solid var(--brand);
  line-height: 1.2;
}

.search-field {
  display: flex;
  gap: 8px;
}

.search-field input {
  flex: 1;
  height: 42px;
  min-width: 0;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 3px;
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: border-color .25s var(--ease), box-shadow .25s var(--ease);
}

.search-field input:focus {
  border-color: rgba(18, 115, 57, .5);
  box-shadow: 0 0 0 3px rgba(18, 115, 57, .1);
}

.search-field button {
  height: 42px;
  padding: 0 16px;
  border: 0;
  border-radius: 3px;
  background: var(--grad);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}

.side-list li + li {
  margin-top: 2px;
}

.side-list a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 12px;
  border-radius: 3px;
  font-size: 14px;
  color: var(--text-soft);
}

.side-list a:hover {
  background: var(--surface-2);
  color: var(--brand);
}

/* article detail */
.article-detail {
  padding: 20px 0 0;
}

.article-detail h1 {
  font-family: var(--font-display);
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 700;
  letter-spacing: .01em;
}

.article-detail .meta {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  margin: 18px 0 28px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  color: var(--muted);
}

.article-detail .meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.article-detail .meta svg {
  width: 15px;
  height: 15px;
}

.rich-content {
  font-size: 16px;
  line-height: 1.95;
  color: var(--text-soft);
}

.rich-content img {
  max-width: 100%;
  height: auto;
  border-radius: 3px;
  margin: 16px 0;
}

.rich-content h1, .rich-content h2, .rich-content h3, .rich-content h4 {
  margin: 32px 0 14px;
  color: var(--text);
}

.rich-content p {
  margin: 16px 0;
}

.rich-content a {
  color: var(--brand);
  text-decoration: underline;
}

.rich-content ul, .rich-content ol {
  padding-left: 22px;
  margin: 16px 0;
  list-style: disc;
}

.rich-content ol {
  list-style: decimal;
}

.rich-content li {
  margin: 6px 0;
}

.rich-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
}

.rich-content table th,
.rich-content table td {
  border: 1px solid var(--line);
  padding: 10px 12px;
}

.rich-content blockquote {
  margin: 20px 0;
  padding: 14px 20px;
  border-left: 3px solid var(--brand);
  background: var(--surface-2);
  color: var(--muted);
}

/* page content (single pages) */
.page-content {
  padding: 72px 0 96px;
}

.page-content .rich-content {
  max-width: 900px;
  margin: 0 auto;
}

/* ============================================================
   9. Footer
   ============================================================ */
.site-footer {
  background: var(--ink);
  color: rgba(255, 255, 255, .62);
  padding: 76px 0 0;
  font-size: 14px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 44px;
  padding-bottom: 52px;
}

.footer-brand img {
  height: 34px;
  margin-bottom: 20px;
}

.footer-brand p {
  max-width: 320px;
  line-height: 1.9;
  color: rgba(255, 255, 255, .5);
}

.footer-col h4 {
  margin-bottom: 18px;
  font-size: 15px;
  color: #fff;
  font-weight: 600;
}

.footer-col li + li {
  margin-top: 10px;
}

.footer-col a:hover {
  color: var(--cyan);
}

.footer-contact li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  line-height: 1.7;
}

.footer-contact svg {
  width: 15px;
  height: 15px;
  flex: none;
  margin-top: 5px;
  color: var(--cyan);
}

.footer-bottom {
  border-top: 1px solid var(--line-dark);
  padding: 22px 0 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
  color: rgba(255, 255, 255, .42);
}

.footer-bottom a:hover {
  color: var(--cyan);
}

/* ============================================================
   10. Reveal animation
   ============================================================ */
[data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .8s var(--ease), transform .8s var(--ease);
  will-change: opacity, transform;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ============================================================
   11. Responsive
   ============================================================ */
@media (max-width: 1080px) {
  .feature-grid,
  .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .step-grid,
  .contact-grid,
  .hero-metrics {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }

  .article-layout {
    grid-template-columns: 1fr;
  }

  .side-card {
    position: static;
  }
}

@media (max-width: 900px) {
  .primary-nav,
  .header-action .btn {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .header-action {
    margin-left: auto;
  }

  .showcase-row {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .showcase-row.reverse .showcase-media {
    order: 0;
  }

  .showcase-media img {
    height: 260px;
  }

  .section {
    padding: 68px 0;
  }

  .article-item {
    grid-template-columns: 1fr;
  }

  .article-item .thumb {
    aspect-ratio: 16 / 9;
  }
}

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

  .hero {
    padding-top: calc(var(--header-h) + 56px);
  }

  .hero-metrics {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-metrics div {
    padding: 14px 8px;
  }

  .btn {
    height: 44px;
    padding: 0 20px;
    font-size: 14px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    justify-content: center;
    text-align: center;
  }
}

/* ===== 关于我们 Tab ===== */
.about-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 32px;
}

.about-tab {
  padding: 10px 26px;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: #fff;
  font-size: 15px;
  color: var(--ink-2, #475569);
  transition: all .3s var(--ease);
}

.about-tab:hover {
  color: var(--brand);
  border-color: rgba(18, 115, 57, .35);
}

.about-tab.active {
  background: var(--grad);
  border-color: transparent;
  color: #fff;
}

.about-content {
  max-width: 920px;
  margin: 0 auto;
}

/* ===== 头部联系我们下拉 ===== */
.header-contact {
  position: relative;
}

.header-contact .contact-pop {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  width: 300px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: #fff;
  box-shadow: var(--shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity .25s var(--ease), transform .25s var(--ease), visibility .25s var(--ease);
  z-index: 60;
}

.header-contact:hover .contact-pop,
.header-contact:focus-within .contact-pop {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.contact-pop h4 {
  font-size: 15px;
  margin-bottom: 12px;
  color: var(--ink, #0f172a);
}

.contact-pop ul {
  display: grid;
  gap: 10px;
}

.contact-pop li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 14px;
  color: var(--ink-2, #475569);
  line-height: 1.5;
}

.contact-pop li svg {
  width: 16px;
  height: 16px;
  flex: none;
  margin-top: 3px;
  color: var(--brand);
}

.contact-pop li a {
  color: inherit;
}

.contact-pop li a:hover {
  color: var(--brand);
}

.contact-pop .pop-title {
  display: block;
  font-size: 12px;
  color: #94a3b8;
}

@media (max-width: 991px) {
  .header-contact .contact-pop {
    display: none;
  }
}

/* ===== 价值主张（编辑式双栏） ===== */
.value-section {
  border-top: 1px solid var(--line-dark);
}

.value-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1px solid var(--line-dark);
  background: var(--line-dark);
  gap: 1px;
}

.value-panel {
  position: relative;
  padding: 64px 60px 68px;
  background: linear-gradient(180deg, rgba(255, 255, 255, .028), rgba(255, 255, 255, .006));
}

.value-panel .value-no {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .3em;
  color: var(--cyan);
}

.value-panel h3 {
  margin: 22px 0 24px;
  font-family: var(--font-display);
  font-size: clamp(24px, 2.6vw, 34px);
  font-weight: 700;
  line-height: 1.42;
  letter-spacing: .01em;
  color: #fff;
}

.value-panel p {
  font-size: 15px;
  line-height: 2.1;
  color: rgba(255, 255, 255, .62);
}

.value-panel::after {
  content: "";
  position: absolute;
  left: 60px;
  bottom: 0;
  width: 48px;
  height: 1px;
  background: var(--cyan);
  opacity: .55;
}

@media (max-width: 900px) {
  .value-grid {
    grid-template-columns: 1fr;
  }

  .value-panel {
    padding: 44px 32px 48px;
  }

  .value-panel::after {
    left: 32px;
  }
}

/* ===== 产品体系（首页） ===== */
.line-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.line-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 38px 36px 34px;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: #fff;
  overflow: hidden;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s var(--ease);
}

.line-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: var(--grad);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s var(--ease);
}

.line-card:hover {
  transform: translateY(-6px);
  border-color: rgba(18, 115, 57, .28);
  box-shadow: var(--shadow);
}

.line-card:hover::before {
  transform: scaleX(1);
}

.line-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 20px;
}

.line-no {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .28em;
  color: var(--brand);
}

.line-count {
  font-size: 13px;
  padding: 3px 12px;
  border-radius: 3px;
  background: var(--grad-soft);
  color: var(--brand);
  font-weight: 600;
}

.line-card h3 {
  font-family: var(--font-display);
  font-size: 23px;
  font-weight: 700;
  letter-spacing: .01em;
  margin-bottom: 12px;
}

.line-card p {
  font-size: 15px;
  color: var(--muted);
  line-height: 1.9;
}

.line-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.line-tags span {
  font-size: 12.5px;
  padding: 4px 12px;
  border: 1px solid var(--line);
  border-radius: 3px;
  color: var(--text-soft);
  background: var(--surface-2);
}

.line-more {
  margin-top: 24px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--brand);
}

.line-more svg {
  width: 15px;
  height: 15px;
  transition: transform .3s var(--ease);
}

.line-card:hover .line-more svg {
  transform: translateX(4px);
}

/* ===== 产品中心页：产品线导航（细线轻量式） ===== */
.product-anchors {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 80px;
  border-block: 1px solid var(--line);
}

.product-anchors a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 18px 30px;
  border-left: 1px solid var(--line);
  font-size: 15px;
  color: var(--text-soft);
  transition: color .3s var(--ease), background .3s var(--ease);
}

.product-anchors a:last-child {
  border-right: 1px solid var(--line);
}

.product-anchors a b {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .2em;
  color: var(--brand);
}

.product-anchors a:hover {
  color: var(--brand);
  background: var(--surface-2);
}

@media (max-width: 900px) {
  .product-anchors {
    flex-direction: column;
  }

  .product-anchors a {
    border-left: 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    padding: 15px 8px;
  }

  .product-anchors a:last-child {
    border-bottom: 0;
  }
}

.product-line {
  margin-bottom: 96px;
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.product-line:last-of-type {
  margin-bottom: 48px;
}

.product-line-head {
  display: flex;
  align-items: flex-start;
  gap: 26px;
  max-width: 880px;
  margin: 0 auto 44px;
  text-align: center;
  flex-direction: column;
  align-items: center;
}

.product-line-no {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .3em;
  color: var(--brand);
}

.product-line-head h2 {
  font-family: var(--font-display);
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 700;
  letter-spacing: .01em;
}

.product-line-head p {
  margin-top: 14px;
  color: var(--muted);
  line-height: 1.9;
  font-size: 15.5px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.product-card {
  position: relative;
  padding: 28px 26px;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: #fff;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}

.product-card:hover {
  transform: translateY(-4px);
  border-color: rgba(18, 115, 57, .28);
  box-shadow: var(--shadow-sm);
}

.product-tag {
  display: inline-block;
  margin-bottom: 14px;
  padding: 2px 10px;
  border-radius: 3px;
  background: var(--grad-soft);
  color: var(--brand);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .04em;
}

.product-card h3 {
  font-size: 17px;
  line-height: 1.6;
  margin-bottom: 10px;
}

.product-card p {
  font-size: 13.5px;
  color: var(--muted);
  line-height: 1.85;
}

.ankao-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 3px;
  overflow: hidden;
}

.ankao-card {
  padding: 34px 30px;
  background: #fff;
}

.ankao-card h3 {
  font-family: var(--font-display);
  font-size: 19px;
  margin-bottom: 14px;
}

.ankao-card p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.95;
}

.ai-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.ai-card {
  padding: 40px 38px;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: linear-gradient(180deg, var(--surface-2), #fff);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}

.ai-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.ai-card h3 {
  font-family: var(--font-display);
  font-size: 24px;
  margin-bottom: 16px;
}

.ai-card p {
  font-size: 14.5px;
  color: var(--muted);
  line-height: 2;
}

.ai-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.ai-tags span {
  font-size: 12.5px;
  padding: 4px 12px;
  border: 1px solid rgba(18, 115, 57, .30);
  border-radius: 3px;
  color: var(--brand);
}

.base-note {
  max-width: 880px;
  margin: 0 auto 36px;
  padding: 26px 32px;
  border-left: 3px solid var(--brand);
  background: var(--surface-2);
  border-radius: 0 3px 3px 0;
}

.base-note p {
  font-size: 15px;
  line-height: 2;
  color: var(--text-soft);
}

.base-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.base-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: #fff;
  font-size: 14px;
  color: var(--text-soft);
  line-height: 1.6;
}

.base-item svg {
  width: 18px;
  height: 18px;
  flex: none;
  color: var(--brand);
}

.products-cta {
  margin-top: 24px;
  padding: 56px 32px;
  text-align: center;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: var(--surface-2);
}

.products-cta p {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
}

/* ===== 基地案例墙（首页） ===== */
.ref-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.ref-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 20px 20px;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: #fff;
  font-size: 14px;
  color: var(--text-soft);
  line-height: 1.6;
  transition: border-color .3s var(--ease), transform .3s var(--ease);
}

.ref-item:hover {
  border-color: rgba(18, 115, 57, .30);
  transform: translateY(-3px);
}

.ref-item svg {
  width: 18px;
  height: 18px;
  flex: none;
  color: var(--brand);
}

@media (max-width: 1080px) {
  .line-grid,
  .ai-grid {
    grid-template-columns: 1fr;
  }

  .product-grid,
  .base-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .ref-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .product-anchors {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .product-grid,
  .base-grid,
  .ankao-grid,
  .product-anchors {
    grid-template-columns: 1fr;
  }

  .ref-grid {
    grid-template-columns: 1fr;
  }
}

/* ===== 产品卡为链接态 ===== */
a.product-card,
a.ai-card {
  display: flex;
  flex-direction: column;
  color: inherit;
}

a.product-card h3,
a.ai-card h3 {
  transition: color .3s var(--ease);
}

a.product-card:hover h3,
a.ai-card:hover h3 {
  color: var(--brand);
}

.product-more {
  margin-top: auto;
  padding-top: 16px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--brand);
}

.product-more svg {
  width: 14px;
  height: 14px;
  transition: transform .3s var(--ease);
}

.product-card:hover .product-more svg {
  transform: translateX(4px);
}

/* ===== 产品中心：Banner 数据概括 ===== */
.banner-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 44px;
  border: 1px solid var(--line-dark);
  background: rgba(255, 255, 255, .03);
  backdrop-filter: blur(6px);
}

.bs-item {
  padding: 26px 16px 22px;
  text-align: center;
  border-left: 1px solid var(--line-dark);
}

.bs-item:first-child {
  border-left: 0;
}

.bs-item b {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(28px, 3.2vw, 42px);
  font-weight: 700;
  line-height: 1.1;
  color: #fff;
}

.bs-item b i {
  font-style: normal;
  font-size: .55em;
  color: var(--cyan);
  margin-left: 3px;
}

.bs-item span {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  letter-spacing: .1em;
  color: rgba(255, 255, 255, .62);
}

@media (max-width: 900px) {
  .banner-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .bs-item:nth-child(3) {
    border-left: 0;
  }

  .bs-item:nth-child(n+3) {
    border-top: 1px solid var(--line-dark);
  }
}

/* ===== 产品卡（带封面图） ===== */
.product-card.has-thumb {
  padding: 0;
  overflow: hidden;
}

.product-thumb {
  position: relative;
  aspect-ratio: 16 / 11;
  overflow: hidden;
  background: var(--surface-2);
  border-bottom: 1px solid var(--line);
}

.product-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .7s var(--ease);
}

.product-card:hover .product-thumb img {
  transform: scale(1.05);
}

.product-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 22px 24px 24px;
}

.product-body .product-tag {
  align-self: flex-start;
}

.product-body h3 {
  margin: 12px 0 10px;
}

/* ===== 安考通图文分栏 ===== */
.ankao-row {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 48px;
  align-items: center;
}

.ankao-media {
  border-radius: 3px;
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-lg);
}

.ankao-media img {
  width: 100%;
  height: auto;
  display: block;
}

.ankao-list {
  display: grid;
  gap: 18px;
}

.ankao-card {
  padding: 24px 28px;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: #fff;
}

.ankao-card h3 {
  font-family: var(--font-display);
  font-size: 18px;
  margin-bottom: 10px;
}

.ankao-card p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.9;
}

/* ===== AI 卡片配图 ===== */
.ai-media {
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background: var(--surface-2);
}

.ai-media img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform .7s var(--ease);
}

.ai-card:hover .ai-media img {
  transform: scale(1.04);
}

.ai-card {
  padding: 0;
}

.ai-card h3 {
  padding: 0 38px;
}

.ai-card p {
  padding: 0 38px;
}

.ai-card .product-more {
  padding: 0 38px;
  margin: 22px 0 36px;
}

/* ===== 基地实拍墙 ===== */
.base-photo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.base-photo {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 3px;
  overflow: hidden;
  background: #fff;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}

.base-photo:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.base-photo img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  display: block;
}

.base-photo figcaption {
  padding: 14px 18px;
  font-size: 13.5px;
  color: var(--text-soft);
  line-height: 1.6;
}

/* ===== 详情页图集 ===== */
.prod-gallery img,
.prod-gallery + * img {
  border-radius: 3px;
}

.prod-gallery .img-grid,
.img-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin: 20px 0;
}

.img-grid img {
  width: 100%;
  height: auto;
  margin: 0;
  border: 1px solid var(--line);
}

@media (max-width: 1080px) {
  .ankao-row {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .base-photo-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .ov-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .base-photo-grid,
  .img-grid {
    grid-template-columns: 1fr;
  }
}