:root {
  --ink: #17211f;
  --muted: #5e6b66;
  --line: #dce5df;
  --paper: #f6f8f5;
  --white: #ffffff;
  --green: #1f8f5f;
  --green-dark: #116344;
  --blue: #315f7a;
  --gold: #b78332;
  --shadow: 0 18px 55px rgba(20, 35, 30, 0.14);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 20;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 48px;
  background: rgba(246, 248, 245, 0.88);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(220, 229, 223, 0.78);
}
.brand { display: flex; align-items: center; gap: 12px; font-weight: 700; }
.brand-mark {
  width: 38px;
  height: 38px;
  display: inline-grid;
  place-items: center;
  border-radius: 8px;
  background: var(--green-dark);
  color: white;
  font-size: 14px;
}
.nav { display: flex; gap: 26px; color: var(--muted); font-size: 15px; }
.nav a:hover { color: var(--green-dark); }
.hero {
  min-height: 92vh;
  position: relative;
  display: grid;
  align-items: end;
  overflow: hidden;
  background: #14201c;
}
.hero-media {
  position: absolute;
  inset: 0;
  background-image: url("assets/hero-prefab-tech.png");
  background-size: cover;
  background-position: center 30%;
  filter: saturate(0.95);
}
.hero-shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(12, 20, 18, 0.84), rgba(12, 20, 18, 0.42) 48%, rgba(12, 20, 18, 0.12));
}
.hero-content {
  position: relative;
  z-index: 1;
  width: min(760px, calc(100% - 48px));
  margin: 0 0 74px 7vw;
  color: white;
}
.eyebrow {
  margin: 0 0 12px;
  color: var(--gold);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0;
}
.hero h1 {
  margin: 0;
  font-size: 72px;
  line-height: 1.05;
  letter-spacing: 0;
}
.hero-copy {
  margin: 22px 0 30px;
  max-width: 650px;
  color: rgba(255,255,255,0.86);
  font-size: 21px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 8px;
  font-weight: 700;
  border: 1px solid transparent;
}
.button.primary { background: var(--green); color: white; }
.button.primary:hover { background: var(--green-dark); }
.button.secondary { border-color: rgba(255,255,255,0.48); color: white; }
.button.secondary:hover { background: rgba(255,255,255,0.12); }
.metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.metrics div {
  background: var(--white);
  padding: 28px 7vw;
  display: grid;
  gap: 4px;
}
.metrics strong { font-size: 34px; color: var(--green-dark); }
.metrics span { color: var(--muted); }
.section {
  width: min(1160px, calc(100% - 48px));
  margin: 0 auto;
  padding: 84px 0;
}
.section-head { max-width: 760px; margin-bottom: 34px; }
h2 { margin: 0; font-size: 38px; line-height: 1.22; letter-spacing: 0; }
h3 { margin: 0 0 10px; font-size: 20px; }
p { margin: 0; }
.service-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);`n  gap: 18px;
}
.service-card {
  background: white;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 26px;
  min-height: 230px;
  box-shadow: var(--shadow);
}
.icon {
  display: inline-flex;
  margin-bottom: 24px;
  color: var(--green-dark);
  font-weight: 800;
}
.service-card p, .step p, .contact p { color: var(--muted); }
.band {
  width: 100%;
  padding-left: max(24px, 7vw);
  padding-right: max(24px, 7vw);
  background: #e8eee9;
}
.industry-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.industry-list span {
  padding: 12px 16px;
  background: white;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: #263430;
}
.process-section { padding-bottom: 50px; }
.timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.step {
  background: white;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 24px;
}
.step b {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  margin-bottom: 20px;
  border-radius: 8px;
  background: #dcefe5;
  color: var(--green-dark);
}
.split {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 46px;
  align-items: start;
  padding-top: 38px;
}
.checklist {
  display: grid;
  gap: 14px;
}
.checklist p {
  display: flex;
  align-items: center;
  gap: 12px;
  background: white;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px 20px;
  font-weight: 700;
}
.checklist span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--green);
}
.contact {
  margin: 34px auto 80px;
  width: min(1160px, calc(100% - 48px));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 42px;
  border-radius: 8px;
  background: #14201c;
  color: white;
}
.contact div { max-width: 760px; }
.contact h2 { margin-bottom: 12px; }
.contact p { color: rgba(255,255,255,0.74); }
@media (max-width: 920px) {
  .site-header { padding: 0 20px; }
  .nav { display: none; }
  .hero { min-height: 88vh; }
  .hero-content { margin: 0 24px 52px; width: calc(100% - 48px); }
  .hero h1 { font-size: 48px; }
  .hero-copy { font-size: 18px; }
  .metrics, .service-grid, .timeline, .split { grid-template-columns: 1fr; }
  .metrics div { padding: 24px; }
  .section { width: calc(100% - 40px); padding: 62px 0; }
  h2 { font-size: 30px; }
  .contact { width: calc(100% - 40px); flex-direction: column; align-items: flex-start; padding: 28px; }
}
@media (max-width: 520px) {
  .hero-media { background-position: center top; }
  .button { width: 100%; }
  .hero h1 { font-size: 40px; }
  .service-card { min-height: auto; }
}


.service-grid.three {
  grid-template-columns: repeat(3, 1fr);
}
.feature-card {
  min-height: 430px;
}
.feature-card ul {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
  color: var(--muted);
}
.feature-card li {
  position: relative;
  padding-left: 18px;
}
.feature-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
}
.feature-card.accent {
  border-color: rgba(31, 143, 95, 0.42);
  box-shadow: 0 20px 60px rgba(31, 143, 95, 0.16);
}
.advantage-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.advantage-grid div {
  background: white;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 26px;
}
.advantage-grid p {
  color: var(--muted);
}
@media (max-width: 920px) {
  .service-grid.three, .advantage-grid { grid-template-columns: 1fr; }
  .feature-card { min-height: auto; }
}

.page-hero {
  min-height: 520px;
  padding: 150px 7vw 74px;
  display: grid;
  align-content: end;
  color: white;
  background:
    linear-gradient(90deg, rgba(12,20,18,0.86), rgba(12,20,18,0.35)),
    url("assets/hero-prefab-tech.png") center 34% / cover no-repeat;
}
.services .page-hero,
main .page-hero {
  background:
    linear-gradient(90deg, rgba(12,20,18,0.86), rgba(12,20,18,0.35)),
    url("../assets/hero-prefab-tech.png") center 34% / cover no-repeat;
}
.page-hero h1 {
  margin: 0;
  font-size: 60px;
  line-height: 1.08;
  letter-spacing: 0;
}
.page-hero p:last-child {
  max-width: 720px;
  margin-top: 18px;
  color: rgba(255,255,255,0.84);
  font-size: 21px;
}
.linked {
  display: block;
  transition: transform .18s ease, box-shadow .18s ease;
}
.linked:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 70px rgba(20,35,30,0.18);
}
.linked strong {
  display: inline-flex;
  margin-top: 24px;
  color: var(--green-dark);
}
@media (max-width: 920px) {
  .page-hero { min-height: 460px; padding: 130px 24px 54px; }
  .page-hero h1 { font-size: 40px; }
  .page-hero p:last-child { font-size: 18px; }
}
/* restrained tech refresh */
:root {
  --ink: #17211f;
  --muted: #5e6b66;
  --line: #dce5df;
  --paper: #f6f8f5;
  --white: #ffffff;
  --green: #1f8f5f;
  --green-dark: #116344;
  --blue: #315f7a;
  --gold: #b78332;
  --tech: #10221f;
  --tech-line: rgba(119, 210, 175, 0.18);
  --shadow: 0 18px 55px rgba(20, 35, 30, 0.14);
}

.hero::before,
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(var(--tech-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--tech-line) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(90deg, rgba(0,0,0,0.7), rgba(0,0,0,0.18));
  opacity: 0.48;
  z-index: 1;
}

.hero::after,
.page-hero::after {
  content: "";
  position: absolute;
  left: 7vw;
  right: 7vw;
  bottom: 32px;
  height: 1px;
  background: linear-gradient(90deg, rgba(119,210,175,0.8), rgba(119,210,175,0.08));
  z-index: 2;
}

.hero-content,
.page-hero > * {
  position: relative;
  z-index: 3;
}

.hero-shade {
  z-index: 1;
  background:
    radial-gradient(circle at 68% 28%, rgba(31,143,95,0.18), transparent 28%),
    linear-gradient(90deg, rgba(9, 20, 18, 0.9), rgba(12, 28, 25, 0.58) 48%, rgba(12, 20, 18, 0.22));
}

.hero-media {
  opacity: 0.82;
  filter: saturate(0.88) contrast(1.04);
}

.site-header {
  background: rgba(247, 250, 247, 0.82);
  border-bottom: 1px solid rgba(31, 143, 95, 0.14);
}

.brand-mark {
  background: linear-gradient(145deg, #0d4f39, #1f8f5f);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.18), 0 8px 22px rgba(31,143,95,0.22);
}

.service-card,
.step,
.advantage-grid div,
.checklist p {
  background:
    linear-gradient(180deg, rgba(255,255,255,0.96), rgba(250,253,251,0.92));
  border-color: rgba(31, 143, 95, 0.16);
}

.service-card {
  position: relative;
  overflow: hidden;
}
.service-card::after {
  content: "";
  position: absolute;
  inset: auto 22px 0 22px;
  height: 2px;
  background: linear-gradient(90deg, rgba(31,143,95,0.82), rgba(49,95,122,0.16));
}

.feature-card.accent {
  background:
    linear-gradient(180deg, rgba(250,255,252,0.98), rgba(241,250,245,0.94));
}

.band {
  background:
    linear-gradient(180deg, #e8eee9, #eef3ef),
    linear-gradient(var(--tech-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--tech-line) 1px, transparent 1px);
  background-size: auto, 80px 80px, 80px 80px;
}

.page-hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 70% 26%, rgba(31,143,95,0.22), transparent 30%),
    linear-gradient(90deg, rgba(9,20,18,0.9), rgba(12,28,25,0.5)),
    url("../assets/hero-prefab-tech.png") center 34% / cover no-repeat;
}

.metrics div {
  background:
    linear-gradient(180deg, #ffffff, #f8fbf8);
}

.value-map {
  padding-bottom: 46px;
}
.value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.value-grid div {
  background: white;
  border: 1px solid rgba(31,143,95,0.18);
  border-radius: 8px;
  padding: 26px;
  box-shadow: var(--shadow);
}
.value-grid span {
  display: inline-flex;
  margin-bottom: 14px;
  color: var(--gold);
  font-weight: 800;
  font-size: 14px;
}
.value-grid p {
  color: var(--muted);
  margin-bottom: 18px;
}
.value-grid strong {
  color: var(--green-dark);
}
@media (max-width: 920px) {
  .value-grid { grid-template-columns: 1fr; }
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.capability-grid div {
  min-height: 176px;
  padding: 24px;
  border-radius: 8px;
  border: 1px solid rgba(31,143,95,0.16);
  background:
    linear-gradient(180deg, rgba(255,255,255,0.98), rgba(248,252,249,0.94));
  box-shadow: var(--shadow);
}
.capability-grid b {
  display: block;
  margin-bottom: 12px;
  font-size: 19px;
  color: var(--green-dark);
}
.capability-grid p {
  color: var(--muted);
}
.value-grid div {
  min-height: 250px;
}
.value-grid h3 {
  font-size: 22px;
  line-height: 1.32;
}
.page-hero h1 {
  max-width: 900px;
}
@media (max-width: 1100px) {
  .capability-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .capability-grid { grid-template-columns: 1fr; }
  .capability-grid div, .value-grid div { min-height: auto; }
}

.hero-service-panel {
  width: min(720px, 100%);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 18px;
}
.hero-service-panel a {
  display: grid;
  gap: 8px;
  min-height: 118px;
  padding: 16px;
  border: 1px solid rgba(119,210,175,0.28);
  border-radius: 8px;
  background: rgba(9, 24, 21, 0.72);
  backdrop-filter: blur(10px);
}
.hero-service-panel a:hover {
  border-color: rgba(119,210,175,0.72);
  background: rgba(12, 44, 35, 0.78);
}
.hero-service-panel b {
  font-size: 16px;
  line-height: 1.28;
  color: #ffffff;
}
.hero-service-panel span {
  font-size: 14px;
  line-height: 1.45;
  color: rgba(255,255,255,0.72);
}
@media (max-width: 920px) {
  .hero-actions { display: grid; grid-template-columns: 1fr; }
  .hero-service-panel { grid-template-columns: 1fr; }
  .hero-service-panel a { min-height: auto; }
}

/* Make the three core services the visual focus in the first viewport */
.hero-content {
  width: min(1180px, calc(100% - 56px));
  margin: 0 auto 64px;
}
.hero-copy {
  max-width: 780px;
}
.hero-service-panel {
  width: 100%;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 28px;
}
.hero-service-panel a {
  min-height: 190px;
  padding: 26px;
  align-content: space-between;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.12), rgba(9,24,21,0.78));
  border: 1px solid rgba(119,210,175,0.46);
  box-shadow: 0 22px 70px rgba(0,0,0,0.24);
}
.hero-service-panel b {
  font-size: 25px;
  line-height: 1.22;
}
.hero-service-panel span {
  font-size: 17px;
  color: rgba(255,255,255,0.82);
}
.hero-service-panel a::after {
  content: "查看详情";
  display: inline-flex;
  width: fit-content;
  padding: 8px 12px;
  border-radius: 8px;
  color: #dff7ec;
  background: rgba(31,143,95,0.24);
  font-size: 14px;
  font-weight: 700;
}
.hero-actions {
  margin-top: 18px;
}
.hero-actions .secondary {
  background: rgba(255,255,255,0.08);
}
@media (max-width: 920px) {
  .hero-content { width: calc(100% - 40px); margin: 0 auto 42px; }
  .hero-service-panel { grid-template-columns: 1fr; gap: 12px; }
  .hero-service-panel a { min-height: 126px; padding: 18px; }
  .hero-service-panel b { font-size: 20px; }
  .hero-service-panel span { font-size: 15px; }
}

.nav {
  opacity: 0.82;
}
.nav a {
  padding: 6px 0;
}



.contact-hero {
  min-height: 440px;
}
.form-section {
  padding-top: 34px;
}
.lead-form {
  display: grid;
  gap: 16px;
  max-width: 760px;
  background: white;
  border: 1px solid rgba(31,143,95,0.16);
  border-radius: 8px;
  padding: 28px;
  box-shadow: var(--shadow);
}
.lead-form label {
  display: grid;
  gap: 8px;
  color: var(--ink);
  font-weight: 700;
}
.lead-form input,
.lead-form select,
.lead-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 13px 14px;
  font: inherit;
  color: var(--ink);
  background: #fbfdfb;
}
.lead-form textarea {
  resize: vertical;
}
.form-result {
  min-height: 24px;
  color: var(--green-dark);
  font-weight: 700;
}

/* Primary service entrances: visually prominent, not hidden in top-right nav */
.hero-service-panel a {
  position: relative;
  border: 0;
  background:
    linear-gradient(rgba(9,24,21,0.82), rgba(9,24,21,0.82)) padding-box,
    linear-gradient(135deg, #39f5a6, #5fb7ff 48%, #d6a84f) border-box;
  border: 2px solid transparent;
}
.hero-service-panel a:nth-child(2) {
  background:
    linear-gradient(rgba(9,24,21,0.82), rgba(9,24,21,0.82)) padding-box,
    linear-gradient(135deg, #7dd3fc, #1f8f5f 52%, #f0c36a) border-box;
}
.hero-service-panel a:nth-child(3) {
  background:
    linear-gradient(rgba(9,24,21,0.84), rgba(9,24,21,0.84)) padding-box,
    linear-gradient(135deg, #f0c36a, #39f5a6 48%, #5fb7ff) border-box;
}
.hero-service-panel a:hover {
  transform: translateY(-4px);
  box-shadow: 0 28px 88px rgba(45, 214, 151, 0.22);
}
.hero-service-panel b {
  color: #ffffff;
}
.nav {
  gap: 18px;
  font-size: 14px;
}
.nav a {
  color: var(--muted);
}

/* Benchmark-inspired homepage structure: clear entrances, diagnosis, scenarios, process, FAQ */
.quick-diagnosis {
  width: min(1180px, calc(100% - 48px));
  margin: 28px auto 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 20px 22px;
  border-radius: 8px;
  background:
    linear-gradient(#ffffff, #ffffff) padding-box,
    linear-gradient(135deg, #39f5a6, #5fb7ff 48%, #f0c36a) border-box;
  border: 2px solid transparent;
  box-shadow: var(--shadow);
}
.quick-diagnosis div {
  display: grid;
  gap: 6px;
}
.quick-diagnosis b {
  font-size: 22px;
  color: var(--ink);
}
.quick-diagnosis span {
  color: var(--muted);
}
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.scenario-grid a {
  min-height: 250px;
  display: grid;
  align-content: start;
  gap: 12px;
  padding: 22px;
  border-radius: 8px;
  background: #ffffff;
  border: 1px solid rgba(31,143,95,0.16);
  box-shadow: var(--shadow);
}
.scenario-grid a:hover {
  transform: translateY(-3px);
  border-color: rgba(31,143,95,0.42);
}
.scenario-grid span {
  width: fit-content;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 800;
  color: var(--green-dark);
  background: rgba(31,143,95,0.1);
}
.scenario-grid h3 {
  font-size: 21px;
  line-height: 1.32;
}
.scenario-grid p {
  color: var(--muted);
}
.scenario-grid b {
  margin-top: auto;
  color: var(--green-dark);
}
.compact-process {
  background: #f7fbf8;
}
.compact-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid rgba(31,143,95,0.14);
  background: rgba(31,143,95,0.14);
}
.compact-steps div {
  min-height: 220px;
  padding: 24px;
  background: #ffffff;
}
.compact-steps b {
  display: inline-flex;
  margin-bottom: 28px;
  color: #0e6b47;
  font-size: 28px;
}
.compact-steps h3 {
  margin-bottom: 10px;
  font-size: 21px;
}
.compact-steps p {
  color: var(--muted);
}
.faq-list {
  display: grid;
  gap: 12px;
}
.faq-list details {
  border-radius: 8px;
  border: 1px solid rgba(31,143,95,0.16);
  background: #ffffff;
  box-shadow: var(--shadow);
}
.faq-list summary {
  cursor: pointer;
  padding: 18px 20px;
  font-weight: 800;
  color: var(--ink);
}
.faq-list p {
  padding: 0 20px 20px;
  color: var(--muted);
}
@media (max-width: 1100px) {
  .scenario-grid, .compact-steps { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 680px) {
  .quick-diagnosis { width: calc(100% - 32px); flex-direction: column; align-items: stretch; }
  .scenario-grid, .compact-steps { grid-template-columns: 1fr; }
  .scenario-grid a, .compact-steps div { min-height: auto; }
}



.contact-direct {
  max-width: 760px;
  margin-top: 18px;
  padding: 22px 24px;
  border-radius: 8px;
  border: 1px solid rgba(31,143,95,0.16);
  background: #ffffff;
  box-shadow: var(--shadow);
}
.contact-direct b {
  display: block;
  margin-bottom: 10px;
  color: var(--green-dark);
  font-size: 20px;
}
.contact-direct p {
  margin: 6px 0;
  color: var(--muted);
}

.form-actions {
  display: grid;
  grid-template-columns: 1fr 180px;
  gap: 12px;
}
.contact-direct a {
  color: var(--green-dark);
  font-weight: 800;
}
@media (max-width: 640px) {
  .form-actions { grid-template-columns: 1fr; }
}