:root {
  --blue-950: #0b266a;
  --blue-900: #102f7d;
  --blue-800: #13479d;
  --blue-700: #1764c8;
  --blue-600: #2076db;
  --blue-100: #eaf4ff;
  --blue-050: #f4f9ff;
  --ink: #14223d;
  --muted: #5d6b82;
  --line: #d9e7f6;
  --card: #ffffff;
  --shadow: 0 12px 32px rgba(22, 79, 151, 0.11);
  --soft-shadow: 0 8px 22px rgba(33, 93, 163, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: #fff;
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", sans-serif;
  letter-spacing: 0;
}

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

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 1px 0 rgba(14, 72, 137, 0.08);
  backdrop-filter: blur(12px);
}

.header-inner {
  width: min(1090px, calc(100% - 48px));
  height: 64px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 30px;
}

.brand {
  flex: 0 0 180px;
}

.brand img {
  width: 176px;
  height: auto;
}

.nav {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(16px, 2.2vw, 32px);
  font-size: 14px;
  font-weight: 700;
  color: #1f2b3f;
  white-space: nowrap;
}

.nav a {
  position: relative;
  padding: 22px 0;
}

.nav a::after {
  position: absolute;
  left: 50%;
  bottom: 14px;
  width: 0;
  height: 2px;
  content: "";
  background: var(--blue-700);
  border-radius: 99px;
  transform: translateX(-50%);
  transition: width 0.2s ease;
}

.nav a:hover::after {
  width: 18px;
}

.service-button {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-width: 120px;
  height: 34px;
  padding: 0 20px;
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  background: linear-gradient(135deg, #1f77df 0%, #0a55c7 100%);
  border-radius: 19px;
  box-shadow: 0 8px 18px rgba(21, 99, 203, 0.22);
}

.service-button span {
  display: grid;
  width: 18px;
  height: 18px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 50%;
  font-size: 11px;
  line-height: 1;
}

.hero {
  min-height: 389px;
  background:
    linear-gradient(90deg, rgba(246, 251, 255, 0.98) 0%, rgba(241, 248, 255, 0.94) 34%, rgba(236, 246, 255, 0.28) 58%, rgba(238, 247, 255, 0.12) 100%),
    url("assets/hero-lab.png") right center / auto 389px no-repeat;
  border-bottom: 1px solid rgba(196, 220, 245, 0.58);
}

.hero-inner {
  width: min(1090px, calc(100% - 48px));
  margin: 0 auto;
  min-height: 389px;
  display: flex;
  align-items: center;
}

.hero-copy {
  width: min(560px, 54%);
  padding-top: 6px;
}

.breadcrumb {
  margin-bottom: 26px;
  color: #4d627e;
  font-size: 12px;
  font-weight: 600;
}

.hero h1 {
  margin: 0;
  color: var(--blue-950);
  font-size: clamp(42px, 5vw, 56px);
  line-height: 1;
  font-weight: 900;
  letter-spacing: 0;
}

.eyebrow {
  margin: 12px 0 16px;
  color: var(--blue-900);
  font-size: 18px;
  letter-spacing: 2px;
}

.hero-lead {
  position: relative;
  margin: 0 0 18px;
  padding-left: 14px;
  color: var(--blue-900);
  font-size: 17px;
  line-height: 1.55;
  font-weight: 900;
}

.hero-lead::before {
  position: absolute;
  left: 0;
  top: 6px;
  width: 4px;
  height: 24px;
  content: "";
  background: var(--blue-700);
}

.hero-text {
  margin: 0;
  max-width: 545px;
  color: #26384f;
  font-size: 14px;
  line-height: 2;
  font-weight: 600;
}

.hero-features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 34px;
  margin-top: 34px;
  max-width: 520px;
}

.feature {
  display: grid;
  justify-items: center;
  gap: 6px;
  text-align: center;
}

.feature-icon {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  color: var(--blue-700);
  font-size: 24px;
  font-weight: 900;
  border: 2px solid #2880e2;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.76);
}

.feature strong {
  color: #1f2b3f;
  font-size: 13px;
}

.feature small {
  color: #40516a;
  font-size: 11px;
  line-height: 1.45;
}

.section {
  width: min(1090px, calc(100% - 48px));
  margin: 0 auto;
  padding-top: 24px;
}

.section h2,
.panel h2 {
  margin: 0;
  color: #142d58;
  font-size: 20px;
  line-height: 1.2;
  font-weight: 900;
  text-align: center;
}

.section-mark {
  width: 37px;
  height: 5px;
  margin: 8px auto 22px;
  background: linear-gradient(90deg, var(--blue-700), var(--blue-700) 44%, transparent 44%, transparent 58%, var(--blue-700) 58%);
  border-radius: 99px;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 14px;
}

.service-card {
  overflow: hidden;
  min-height: 184px;
  background: var(--card);
  border: 1px solid #e0e9f4;
  border-radius: 5px;
  box-shadow: var(--soft-shadow);
}

.service-card img {
  width: 100%;
  height: 105px;
  object-fit: cover;
}

.card-copy {
  padding: 11px 11px 12px;
  text-align: center;
}

.card-copy h3,
.equipment-grid h3,
.application-grid h3 {
  margin: 0;
  color: var(--blue-900);
  font-size: 15px;
  line-height: 1.35;
  font-weight: 900;
}

.card-copy p {
  margin: 7px 0 0;
  color: #33445c;
  font-size: 12px;
  line-height: 1.75;
  font-weight: 600;
}

.paired-section {
  display: grid;
  grid-template-columns: 1fr 1.16fr;
  gap: 20px;
  padding-top: 32px;
}

.panel {
  min-height: 296px;
  padding: 17px 17px 20px;
  background:
    radial-gradient(circle at 85% 25%, rgba(177, 219, 255, 0.38), transparent 34%),
    linear-gradient(135deg, #f8fbff 0%, #edf6ff 100%);
  border: 1px solid #edf4fc;
  border-radius: 8px;
  box-shadow: var(--soft-shadow);
}

.panel-heading h2 {
  text-align: left;
}

.panel-heading .section-mark {
  margin-left: 0;
  margin-bottom: 18px;
}

.panel-heading.horizontal {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

.panel-heading.horizontal a {
  margin-top: 3px;
  color: var(--blue-800);
  font-size: 12px;
  font-weight: 900;
  white-space: nowrap;
}

.items-layout {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr 160px;
  gap: 14px;
  min-height: 228px;
}

.items-list {
  display: grid;
  align-content: start;
  gap: 19px;
}

.items-list + .items-list {
  padding-left: 18px;
  border-left: 1px solid #d9e5f2;
}

.test-item {
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 9px;
  align-items: start;
}

.test-item span {
  display: grid;
  width: 20px;
  height: 20px;
  place-items: center;
  color: var(--blue-700);
  font-size: 17px;
  line-height: 1;
}

.test-item strong {
  display: block;
  margin-bottom: 5px;
  color: var(--blue-900);
  font-size: 13px;
  font-weight: 900;
}

.test-item p {
  margin: 0;
  color: #425069;
  font-size: 11px;
  line-height: 1.5;
  font-weight: 600;
}

.plant-roots {
  align-self: end;
  width: 132px;
  margin-left: auto;
  filter: drop-shadow(0 12px 10px rgba(66, 116, 81, 0.08));
}

.equipment-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px 18px;
}

.equipment-grid article {
  overflow: hidden;
  min-height: 100px;
  text-align: center;
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid rgba(213, 227, 242, 0.78);
  border-radius: 5px;
}

.equipment-grid img {
  width: 100%;
  height: 64px;
  object-fit: cover;
}

.equipment-grid h3 {
  margin-top: 8px;
  font-size: 13px;
}

.equipment-grid p {
  margin: 4px 6px 10px;
  color: #42516a;
  font-size: 11px;
  line-height: 1.35;
  font-weight: 600;
}

.process {
  padding-top: 18px;
}

.process-strip {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0;
  padding: 18px 22px 20px;
  background: linear-gradient(180deg, #f8fbff 0%, #f2f8ff 100%);
  border: 1px solid #edf4fc;
  border-radius: 8px;
  box-shadow: var(--soft-shadow);
}

.process-step {
  position: relative;
  display: grid;
  justify-items: center;
  text-align: center;
}

.process-step:not(:last-child)::after {
  position: absolute;
  top: 24px;
  right: -33%;
  width: 66%;
  height: 1px;
  content: "";
  background: repeating-linear-gradient(90deg, #2b73d5 0 5px, transparent 5px 10px);
}

.process-step:not(:last-child)::before {
  position: absolute;
  top: 21px;
  right: -34%;
  z-index: 1;
  width: 7px;
  height: 7px;
  content: "";
  border-top: 1px solid #2b73d5;
  border-right: 1px solid #2b73d5;
  transform: rotate(45deg);
}

.process-icon {
  display: grid;
  width: 48px;
  height: 48px;
  margin-bottom: 10px;
  place-items: center;
  color: #fff;
  font-size: 24px;
  line-height: 1;
  background: linear-gradient(135deg, #2578df, #0756c8);
  border-radius: 50%;
  box-shadow: 0 8px 16px rgba(26, 104, 210, 0.25);
}

.process-step strong {
  color: var(--blue-900);
  font-size: 12px;
  line-height: 1.35;
  font-weight: 900;
}

.process-step p {
  margin: 6px 0 0;
  color: #36445b;
  font-size: 11px;
  line-height: 1.55;
  font-weight: 600;
}

.applications {
  padding-top: 27px;
  padding-bottom: 20px;
}

.applications .section-mark {
  margin-bottom: 21px;
}

.application-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 20px;
}

.application-grid article {
  text-align: center;
}

.application-grid img {
  width: 100%;
  height: 68px;
  object-fit: cover;
  border-radius: 5px;
  box-shadow: 0 6px 14px rgba(29, 85, 148, 0.13);
}

.application-grid h3 {
  margin-top: 10px;
  font-size: 13px;
}

.footer {
  display: flex;
  justify-content: center;
  gap: 24px;
  padding: 18px 24px 26px;
  color: #5e6e83;
  font-size: 12px;
  font-weight: 700;
  background: #f9fcff;
  border-top: 1px solid #edf4fc;
}

@media (max-width: 1020px) {
  .header-inner {
    height: auto;
    padding: 12px 0;
    flex-wrap: wrap;
    gap: 10px 18px;
  }

  .brand {
    flex-basis: auto;
  }

  .nav {
    order: 3;
    width: 100%;
    justify-content: flex-start;
    gap: 18px;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .nav a {
    padding: 8px 0;
  }

  .nav a::after {
    bottom: 2px;
  }

  .service-button {
    margin-left: auto;
  }

  .hero {
    background:
      linear-gradient(90deg, rgba(246, 251, 255, 0.98), rgba(238, 247, 255, 0.76)),
      url("assets/hero-lab.png") right bottom / 58% auto no-repeat;
  }

  .hero-copy {
    width: min(640px, 72%);
  }

  .service-grid,
  .application-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .paired-section {
    grid-template-columns: 1fr;
  }

  .process-strip {
    grid-template-columns: repeat(4, 1fr);
    gap: 22px 0;
  }

  .process-step::before,
  .process-step::after {
    display: none;
  }
}

@media (max-width: 720px) {
  .header-inner,
  .hero-inner,
  .section {
    width: min(100% - 28px, 1088px);
  }

  .brand img {
    width: 154px;
  }

  .service-button {
    min-width: 104px;
    height: 32px;
    padding: 0 14px;
    font-size: 13px;
  }

  .hero {
    min-height: auto;
    background:
      linear-gradient(180deg, rgba(246, 251, 255, 0.98) 0%, rgba(238, 247, 255, 0.88) 62%, rgba(238, 247, 255, 0.68) 100%),
      url("assets/hero-lab.png") right bottom / 88% auto no-repeat;
  }

  .hero-inner {
    min-height: 570px;
    align-items: flex-start;
  }

  .hero-copy {
    width: 100%;
    padding-top: 28px;
  }

  .breadcrumb {
    margin-bottom: 18px;
  }

  .hero h1 {
    font-size: 42px;
  }

  .eyebrow {
    font-size: 15px;
  }

  .hero-lead {
    font-size: 15px;
  }

  .hero-text {
    max-width: 100%;
    padding-right: 2px;
    font-size: 13px;
    line-height: 1.85;
  }

  .hero-features {
    grid-template-columns: repeat(2, 1fr);
    max-width: 330px;
    gap: 18px 22px;
    margin-top: 26px;
  }

  .section {
    padding-top: 24px;
  }

  .service-grid,
  .application-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }

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

  .items-list + .items-list {
    padding-left: 0;
    border-left: 0;
  }

  .plant-roots {
    justify-self: center;
    width: 135px;
    margin: -4px auto 0;
  }

  .equipment-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .process-strip {
    grid-template-columns: repeat(2, 1fr);
    padding: 18px 12px 20px;
  }

  .footer {
    flex-direction: column;
    align-items: center;
    gap: 8px;
    text-align: center;
  }
}

@media (max-width: 430px) {
  .nav {
    font-size: 13px;
  }

  .hero-inner {
    min-height: 610px;
  }

  .service-grid,
  .application-grid,
  .equipment-grid {
    grid-template-columns: 1fr;
  }

  .service-card {
    min-height: auto;
  }

  .service-card img {
    height: 132px;
  }

  .application-grid img {
    height: 96px;
  }

  .process-strip {
    grid-template-columns: 1fr;
  }
}