:root {
  --ink: #132033;
  --muted: #64748b;
  --line: #d7e3f3;
  --paper: #ffffff;
  --soft: #f3f7fc;
  --blue: #2563eb;
  --blue-dark: #173a8f;
  --sky: #0ea5e9;
  --green: #16a37a;
  --green-dark: #0f766e;
  --amber: #d97706;
  --rose: #be4861;
  --night: #10243a;
  --shadow: 0 20px 60px rgba(35, 82, 130, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--soft);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", Arial, sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

.site-header {
  position: absolute;
  z-index: 10;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 22px 0;
  color: var(--ink);
}

.brand,
.main-nav {
  display: flex;
  align-items: center;
}

.brand {
  gap: 12px;
  font-weight: 700;
  letter-spacing: 0;
}

.brand-logo {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 116px;
  height: 38px;
  background: transparent;
}

.brand-logo img {
  width: 98px;
  height: auto;
}

.registered-mark {
  position: absolute;
  top: 1px;
  right: 1px;
  color: var(--blue-dark);
  font-size: 11px;
  font-weight: 800;
  line-height: 1;
}

.main-nav {
  gap: 26px;
  font-size: 15px;
}

.main-nav a {
  color: #334155;
}

.main-nav a:hover {
  color: var(--blue);
}

.hero {
  position: relative;
  min-height: 84svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: var(--ink);
  background: #eef5ff;
}

.hero::before,
.hero::after {
  position: absolute;
  inset: 0;
  content: "";
}

.hero::before {
  background-image: url("../docs/生产大屏.png");
  background-position: right center;
  background-size: cover;
  opacity: 0.34;
  transform: scale(1.02);
}

.hero::after {
  background:
    linear-gradient(90deg, rgba(248, 251, 255, 0.99) 0%, rgba(248, 251, 255, 0.9) 46%, rgba(248, 251, 255, 0.28) 100%),
    linear-gradient(180deg, rgba(232, 241, 255, 0.62) 0%, rgba(255, 255, 255, 0.9) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 112px 0 74px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--green);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0;
}

.hero .eyebrow {
  color: var(--blue);
}

h1,
h2,
h3,
p {
  margin-top: 0;
  overflow-wrap: anywhere;
}

h1 {
  max-width: 760px;
  margin-bottom: 24px;
  font-size: clamp(42px, 6vw, 82px);
  line-height: 1.05;
  letter-spacing: 0;
}

.hero-lead {
  max-width: 720px;
  margin-bottom: 32px;
  color: #475569;
  font-size: clamp(17px, 2vw, 22px);
}

.hero-actions,
.summary-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.button {
  appearance: none;
  font: inherit;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 800;
}

.button-primary {
  background: var(--blue);
  color: #fff;
  box-shadow: 0 14px 30px rgba(37, 99, 235, 0.22);
}

.button-secondary {
  border-color: #b8c8e0;
  background: rgba(255, 255, 255, 0.62);
  color: var(--ink);
}

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

.hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
  margin: 42px 0 0;
  padding: 0;
}

.hero-facts div {
  min-width: 150px;
  border-left: 3px solid var(--blue);
  padding-left: 14px;
}

.hero-facts dt {
  color: #64748b;
  font-size: 13px;
}

.hero-facts dd {
  margin: 4px 0 0;
  font-size: 18px;
  font-weight: 800;
}

.summary-band {
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.section-inner {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.mobile-break {
  display: none;
}

.summary-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.4fr auto;
  gap: 30px;
  align-items: center;
  padding: 28px 0;
}

.summary-title {
  margin: 0;
  font-size: 24px;
  font-weight: 900;
}

.summary-grid p:not(.summary-title) {
  margin: 0;
  color: var(--muted);
}

.summary-metrics span {
  border: 1px solid var(--line);
  padding: 8px 12px;
  background: #eff6ff;
  color: var(--blue-dark);
  font-weight: 800;
}

.section {
  padding: 92px 0;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 38px;
}

.section-heading.compact {
  max-width: 860px;
  text-align: center;
  margin-right: auto;
  margin-left: auto;
}

.section-heading h2,
.linkage-grid h2,
.contact-grid h2 {
  margin-bottom: 16px;
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.12;
  letter-spacing: 0;
}

.section-heading p:last-child,
.linkage-grid > div > p:last-child,
.contact-grid > div > p:last-child {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 18px;
}

.pain-grid,
.value-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.pain-card,
.value-grid article,
.linkage-steps article {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.pain-card {
  padding: 24px;
  box-shadow: 0 12px 32px rgba(25, 58, 50, 0.06);
}

.pain-card span {
  color: var(--amber);
  font-weight: 900;
}

.pain-card h3,
.value-grid h3,
.linkage-steps h3 {
  margin: 10px 0 8px;
  font-size: 22px;
}

.pain-card p,
.value-grid p,
.linkage-steps p {
  margin-bottom: 0;
  color: var(--muted);
}

.flow-section {
  background: #eaf2ff;
}

.flow-track {
  position: relative;
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 12px;
}

.flow-track::before {
  position: absolute;
  top: 32px;
  left: 6%;
  right: 6%;
  height: 2px;
  background: linear-gradient(90deg, var(--green), var(--blue), var(--amber));
  content: "";
}

.flow-track article {
  position: relative;
  padding-top: 0;
  text-align: center;
}

.flow-track span {
  position: relative;
  z-index: 1;
  display: inline-grid;
  place-items: center;
  width: 64px;
  height: 64px;
  border: 4px solid #eaf2ff;
  border-radius: 50%;
  background: var(--blue);
  color: #fff;
  font-size: 20px;
  font-weight: 900;
}

.flow-track h3 {
  margin: 18px 0 8px;
  font-size: 20px;
}

.flow-track p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.feature-stack {
  background: #fff;
}

.feature {
  display: grid;
  grid-template-columns: minmax(280px, 0.78fr) minmax(0, 1.22fr);
  gap: 34px;
  align-items: center;
  margin-top: 26px;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fbff;
}

.feature:first-of-type {
  margin-top: 0;
}

.feature-reverse {
  grid-template-columns: minmax(0, 1.22fr) minmax(280px, 0.78fr);
}

.feature-reverse .feature-copy {
  order: 2;
}

.feature-reverse .screen-frame {
  order: 1;
}

.feature-primary {
  background: linear-gradient(135deg, #eef5ff, #ffffff);
  color: var(--ink);
  border-color: #bfd3ef;
}

.feature-copy h3 {
  margin-bottom: 14px;
  font-size: clamp(26px, 3vw, 38px);
  line-height: 1.18;
}

.feature-copy p {
  color: var(--muted);
}

.feature-primary .feature-copy p,
.feature-primary .feature-copy li {
  color: #526173;
}

.feature-copy ul {
  display: grid;
  gap: 8px;
  margin: 22px 0 0;
  padding-left: 18px;
}

.feature-copy li::marker {
  color: var(--green);
}

.screen-frame {
  margin: 0;
  overflow: hidden;
  border: 1px solid #d5e1dc;
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}

.screen-frame img {
  width: 100%;
  height: auto;
}

.primary-frame {
  border-color: #b7cdea;
  box-shadow: 0 24px 70px rgba(37, 99, 235, 0.18);
}

.linkage-section {
  background:
    linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(14, 165, 233, 0.08)),
    #f7fbff;
}

.linkage-grid,
.contact-grid {
  display: grid;
  grid-template-columns: minmax(280px, 0.9fr) minmax(0, 1.1fr);
  gap: 42px;
  align-items: center;
}

.linkage-steps {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.linkage-steps article {
  padding: 24px;
}

.linkage-steps span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 56px;
  height: 34px;
  padding: 0 12px;
  background: var(--ink);
  color: #fff;
  font-weight: 900;
}

.value-section {
  background: #fff;
}

.value-grid article {
  padding: 28px;
}

.value-grid article:nth-child(1) {
  border-top: 4px solid var(--green);
}

.value-grid article:nth-child(2) {
  border-top: 4px solid var(--rose);
}

.value-grid article:nth-child(3) {
  border-top: 4px solid var(--amber);
}

.value-grid article:nth-child(4) {
  border-top: 4px solid var(--blue);
}

.video-section {
  background: #edf5ff;
}

.video-grid {
  display: grid;
  grid-template-columns: minmax(280px, 0.95fr) minmax(260px, 0.55fr);
  gap: 56px;
  align-items: center;
}

.video-copy h2 {
  margin-bottom: 16px;
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.12;
  letter-spacing: 0;
}

.video-grid > *,
.contact-grid > * {
  min-width: 0;
}

.video-copy p:not(.eyebrow) {
  max-width: 660px;
  margin-bottom: 26px;
  color: var(--muted);
  font-size: 18px;
}

.share-feedback {
  min-height: 24px;
  margin: 12px 0 0;
  color: var(--blue-dark);
  font-size: 14px;
  font-weight: 700;
}

.phone-video {
  width: min(100%, 340px);
  margin: 0 auto;
  padding: 12px;
  border: 1px solid #c7d8ef;
  border-radius: 30px;
  background: #0f172a;
  box-shadow: 0 26px 70px rgba(37, 99, 235, 0.2);
}

.phone-video video {
  display: block;
  width: 100%;
  aspect-ratio: 9 / 16;
  border-radius: 22px;
  background: #000;
  object-fit: cover;
}

.contact-section {
  padding: 92px 0;
  background: linear-gradient(135deg, #173a8f, #10243a);
  color: #fff;
}

.contact-section .eyebrow {
  color: #a9d4ff;
}

.contact-card {
  min-width: 0;
  margin: 0;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  padding: 28px;
  background: rgba(255, 255, 255, 0.06);
  font-style: normal;
}

.contact-card p {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 14px;
  margin-bottom: 14px;
}

.contact-card p > span {
  min-width: 0;
  overflow-wrap: anywhere;
}

.contact-card p:last-child {
  margin-bottom: 0;
}

.contact-card strong {
  color: #a9d4ff;
}

.contact-card a {
  color: #fff;
  font-weight: 900;
}

.wechat-contact {
  display: grid;
  grid-template-columns: 88px minmax(120px, 170px);
  gap: 14px;
  align-items: start;
}

.wechat-contact img {
  width: 170px;
  border-radius: 8px;
  background: #fff;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px 28px;
  padding: 22px 20px;
  background: #0e1c31;
  color: rgba(255, 255, 255, 0.68);
  font-size: 14px;
  text-align: center;
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  color: inherit;
}

.site-footer a:hover {
  color: #fff;
}

@media (max-width: 1040px) {
  .summary-grid,
  .linkage-grid,
  .video-grid,
  .contact-grid,
  .feature,
  .feature-reverse {
    grid-template-columns: 1fr;
  }

  .feature-reverse .feature-copy,
  .feature-reverse .screen-frame {
    order: initial;
  }

  .flow-track {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .flow-track::before {
    display: none;
  }

  .value-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .site-header {
    width: min(1180px, calc(100% - 28px));
    align-items: flex-start;
    padding-top: 16px;
  }

  .brand {
    max-width: 220px;
    align-items: flex-start;
  }

  .brand span:last-child {
    font-size: 13px;
    line-height: 1.35;
  }

  .main-nav {
    display: none;
  }

  .hero {
    min-height: 84svh;
  }

  .hero::before {
    background-position: 58% top;
    opacity: 0.2;
  }

  .hero::after {
    background: linear-gradient(180deg, rgba(248, 251, 255, 0.96) 0%, rgba(255, 255, 255, 0.88) 100%);
  }

  .hero-content,
  .section-inner {
    width: min(1180px, calc(100% - 40px));
  }

  .hero-content {
    padding-top: 112px;
    padding-bottom: 48px;
  }

  h1 {
    font-size: 36px;
    line-height: 1.12;
  }

  .hero-lead {
    font-size: 16px;
  }

  .hero-facts {
    gap: 14px;
    margin-top: 28px;
  }

  .hero-facts div {
    min-width: calc(50% - 7px);
  }

  .summary-grid {
    gap: 16px;
  }

  .summary-title {
    font-size: 22px;
  }

  .section {
    padding: 66px 0;
  }

  .section-heading h2,
  .linkage-grid h2,
  .video-copy h2,
  .contact-grid h2 {
    font-size: 34px;
  }

  .video-copy h2 {
    font-size: 28px;
    word-break: break-all;
  }

  .contact-grid h2 {
    font-size: 28px;
  }

  .mobile-break {
    display: block;
  }

  .video-section,
  .contact-section {
    overflow: hidden;
  }

  .video-grid,
  .contact-grid,
  .video-copy,
  .contact-card {
    max-width: 100%;
  }

  .video-grid,
  .contact-grid {
    width: min(100%, 320px);
    margin-right: auto;
    margin-left: auto;
  }

  .video-copy p:not(.eyebrow),
  .contact-grid p,
  .contact-card p {
    word-break: break-all;
  }

  .pain-grid,
  .flow-track,
  .value-grid,
  .linkage-steps {
    grid-template-columns: 1fr;
  }

  .feature {
    padding: 18px;
  }

  .screen-frame {
    overflow-x: auto;
  }

  .screen-frame img {
    min-width: 720px;
  }

  .feature-primary .screen-frame img {
    min-width: 680px;
  }

  .contact-card p {
    grid-template-columns: 1fr;
    gap: 2px;
  }

  .wechat-contact {
    grid-template-columns: 1fr;
  }

  .phone-video {
    width: min(100%, 280px);
  }
}

@media (max-width: 480px) {
  .site-header {
    gap: 12px;
  }

  .main-nav a:nth-child(2) {
    display: none;
  }

  .hero-actions .button {
    width: 100%;
  }

  .hero-facts div {
    min-width: 100%;
  }
}