:root {
  --ink: #1f2937;
  --muted: #6b7280;
  --line: #dbe4ef;
  --blue: #2759c7;
  --deep-blue: #153e8a;
  --orange: #c9570b;
  --gold: #bd9500;
  --green: #4c8734;
  --teal: #207b8d;
  --paper: #ffffff;
  --soft: #f4f7fb;
  --soft-blue: #eef5ff;
  --shadow: 0 18px 40px rgba(27, 42, 74, 0.12);
  --shadow-strong: 0 28px 70px rgba(20, 42, 82, 0.22);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

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

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

.container {
  width: min(1200px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid rgba(219, 228, 239, 0.9);
  box-shadow: 0 10px 28px rgba(15, 23, 42, 0.05);
  backdrop-filter: blur(12px);
}

.header-inner {
  width: min(1200px, calc(100% - 32px));
  min-height: 68px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 28px;
}

.brand {
  flex: 0 0 auto;
}

.brand img {
  width: 179px;
  height: 57px;
  object-fit: contain;
}

.header-copy {
  display: grid;
  gap: 4px;
  min-width: 0;
  color: #2c3441;
  font-size: 15px;
  line-height: 1.2;
}

.header-copy span {
  color: #9aa3ad;
  font-size: 13px;
  white-space: nowrap;
}

.nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav a {
  height: 68px;
  display: inline-flex;
  align-items: center;
  padding: 0 16px;
  color: #242b35;
  font-size: 15px;
  border-bottom: 3px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.nav a:hover,
.nav a:focus-visible {
  color: var(--blue);
  border-color: var(--blue);
}

.nav a.is-current {
  color: var(--blue);
  border-color: var(--blue);
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 0;
  border-radius: 6px;
  background: #edf3fb;
  padding: 10px;
}

.menu-toggle span {
  display: block;
  height: 2px;
  margin: 5px 0;
  background: var(--deep-blue);
}

.hero {
  position: relative;
  min-height: 620px;
  overflow: hidden;
  background: #12213d;
}

.hero-slide,
.hero-overlay {
  position: absolute;
  inset: 0;
}

.hero-slide {
  background-position: center;
  background-size: cover;
  opacity: 0;
  transform: scale(1.02);
  transition: opacity 1s ease, transform 5s ease;
}

.hero-slide.is-active {
  opacity: 1;
  transform: scale(1);
}

.hero-overlay {
  background:
    radial-gradient(circle at 78% 28%, rgba(39, 89, 199, 0.32), transparent 30%),
    linear-gradient(90deg, rgba(7, 20, 43, 0.9) 0%, rgba(9, 25, 52, 0.66) 47%, rgba(9, 25, 52, 0.24) 100%),
    linear-gradient(0deg, rgba(14, 26, 47, 0.18), rgba(14, 26, 47, 0.18));
}

.hero-content {
  position: relative;
  z-index: 2;
  min-height: 620px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  color: #fff;
  padding-top: 24px;
}

.hero-kicker {
  margin: 0 0 18px;
  padding: 8px 14px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.9);
  font-size: 14px;
  font-weight: 700;
  backdrop-filter: blur(10px);
}

.eyebrow {
  margin: 0 0 10px;
  font-size: 50px;
  font-weight: 700;
  line-height: 1.1;
  text-shadow: 0 12px 36px rgba(0, 0, 0, 0.28);
}

.hero h1 {
  max-width: 780px;
  margin: 0;
  font-size: clamp(36px, 5vw, 52px);
  line-height: 1.22;
  font-weight: 700;
  letter-spacing: 0;
  text-shadow: 0 12px 36px rgba(0, 0, 0, 0.28);
}

.hero-subtitle {
  margin: 14px 0 0;
  font-size: clamp(25px, 3.6vw, 38px);
  line-height: 1.2;
}

.hero-note {
  max-width: 620px;
  margin: 28px 0 0;
  font-size: 18px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.9);
}

.hero-actions {
  margin-top: 30px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  padding: 0 22px;
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button.primary {
  color: #fff;
  background: linear-gradient(135deg, #2f66df, #153e8a);
  box-shadow: 0 12px 26px rgba(39, 89, 199, 0.28);
}

.button.secondary {
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.7);
  background: rgba(255, 255, 255, 0.1);
}

.button.ghost {
  color: var(--blue);
  border: 1px solid rgba(39, 89, 199, 0.3);
  background: #fff;
}

.hero-proof {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  width: min(660px, 100%);
  margin-top: 34px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.1);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.18);
  backdrop-filter: blur(12px);
}

.hero-proof span {
  min-height: 58px;
  display: grid;
  place-items: center;
  color: #fff;
  font-weight: 700;
  border-right: 1px solid rgba(255, 255, 255, 0.16);
}

.hero-proof span:last-child {
  border-right: 0;
}

.hero-dots {
  position: absolute;
  left: 50%;
  bottom: 28px;
  z-index: 3;
  display: flex;
  gap: 10px;
  transform: translateX(-50%);
}

.hero-dots button {
  width: 32px;
  height: 4px;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.45);
}

.hero-dots button.is-active {
  background: #fff;
}

.capability-band {
  position: relative;
  z-index: 3;
  margin-top: 0;
  padding: 0;
  background: #13213d;
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  overflow: hidden;
  border-right: 1px solid rgba(255, 255, 255, 0.12);
  border-left: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.capability-grid article {
  position: relative;
  min-height: 150px;
  padding: 30px 28px;
  border-right: 1px solid rgba(255, 255, 255, 0.12);
  transition: background 0.2s ease;
}

.capability-grid article:hover {
  background: rgba(255, 255, 255, 0.06);
}

.capability-grid article:last-child {
  border-right: 0;
}

.capability-grid span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  height: 28px;
  margin-bottom: 18px;
  border: 1px solid rgba(120, 170, 255, 0.5);
  border-radius: 999px;
  background: rgba(47, 102, 223, 0.18);
  color: #b9d0ff;
  font-family: Arial, sans-serif;
  font-size: 14px;
  font-weight: 900;
}

.capability-grid h2 {
  margin: 0 0 10px;
  color: #fff;
  font-size: 20px;
  line-height: 1.35;
}

.capability-grid p {
  margin: 0;
  color: rgba(230, 238, 255, 0.76);
  font-size: 14px;
  line-height: 1.7;
}

.section {
  padding: 96px 0;
}

.split {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: 64px;
  align-items: start;
}

.section-heading span {
  display: block;
  margin-bottom: 8px;
  color: var(--blue);
  font-family: Arial, sans-serif;
  font-size: 20px;
  font-weight: 900;
}

.section-heading h2 {
  margin: 0;
  color: #333;
  font-size: 34px;
  line-height: 1.2;
}

.section-heading.align-right {
  text-align: right;
}

.section-heading.center {
  text-align: center;
  margin-bottom: 42px;
}

.product-section {
  background:
    linear-gradient(180deg, #fff 0%, #f8fbff 100%),
    #fff;
}

.product-layout {
  display: grid;
  grid-template-columns: 0.82fr 1.58fr;
  gap: 72px;
  align-items: start;
}

.product-intro-panel {
  position: sticky;
  top: 110px;
  min-height: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.product-intro-panel .section-heading {
  margin-bottom: 24px;
}

.product-intro-panel .section-heading h2 {
  font-size: clamp(36px, 4vw, 48px);
}

.product-intro-panel > p {
  margin: 0;
  color: #475569;
  font-size: 17px;
  line-height: 1.85;
}

.product-keywords {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 34px;
}

.product-keywords span {
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  border-radius: 0;
  background: transparent;
  border: 0;
  border-bottom: 1px solid #dce8f6;
  color: #1e3f87;
  font-size: 14px;
  font-weight: 700;
  box-shadow: none;
}

.product-keywords span::before {
  content: "";
  width: 8px;
  height: 8px;
  margin-right: 12px;
  border-radius: 50%;
  background: var(--blue);
}

.product-copy {
  position: relative;
  padding: 0 0 0 42px;
  border: 0;
  border-left: 1px solid #dce8f6;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.product-copy::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 86px;
  background: linear-gradient(180deg, var(--blue), var(--teal));
}

.intro-text {
  color: #444;
  font-size: 18px;
  line-height: 2;
}

.intro-text p {
  margin: 0 0 18px;
}

.value-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 34px;
}

.value-list span {
  min-height: 52px;
  display: flex;
  align-items: center;
  border-left: 3px solid var(--blue);
  background: #fff;
  border-radius: 4px;
  padding: 12px 16px;
  color: #1e3f87;
  font-weight: 700;
  box-shadow: 0 8px 22px rgba(31, 41, 55, 0.06);
}

.light-section {
  background: #f5f8fc;
}

.feature-topline {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
  margin-bottom: 34px;
  background: transparent;
  border: 0;
}

.feature-topline article {
  min-height: 385px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
  padding: 0 28px 30px;
  text-align: center;
  box-shadow: 0 12px 28px rgba(31, 41, 55, 0.06);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.feature-topline article:hover,
.feature-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 42px rgba(31, 41, 55, 0.1);
}

.feature-photo {
  height: 250px;
  margin: 0 -28px;
  background: #e9eef8;
  overflow: hidden;
}

.feature-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.feature-badge {
  width: 112px;
  height: 112px;
  display: grid;
  place-items: center;
  margin: -56px auto 22px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 0 15px rgba(47, 86, 249, 0.2);
}

.feature-badge img {
  width: 84px;
  height: 84px;
  object-fit: contain;
}

.feature-topline h3,
.feature-card h3 {
  margin: 0 0 12px;
  font-size: 20px;
  line-height: 1.35;
}

.feature-topline p,
.feature-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.feature-card {
  min-height: 226px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  box-shadow: 0 10px 22px rgba(31, 41, 55, 0.04);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.icon-shape {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  margin-bottom: 22px;
  border-radius: 50%;
  color: #fff;
  font-weight: 900;
}

.feature-card.blue .icon-shape {
  background: var(--deep-blue);
}

.feature-card.orange .icon-shape {
  background: var(--orange);
}

.feature-card.green .icon-shape {
  background: var(--green);
}

.feature-card.teal .icon-shape {
  background: var(--teal);
}

.feature-card.gold .icon-shape {
  background: var(--gold);
}

.feature-card.violet .icon-shape {
  background: #5b5fae;
}

.view-section {
  background: linear-gradient(180deg, #fff 0%, #f7fbff 100%);
}

.diagram-frame {
  overflow: auto;
  border: 1px solid #e6edf5;
  border-radius: 6px;
  background: #fff;
  box-shadow: 0 14px 34px rgba(31, 41, 55, 0.08);
}

.diagram-frame img {
  width: 100%;
  min-width: 880px;
}

.diagram-frame.large img {
  min-width: 980px;
}

.community {
  padding: 88px 0;
  background: #fff;
  border-top: 1px solid #edf2f8;
  border-bottom: 1px solid #edf2f8;
}

.community-inner {
  width: min(1040px, calc(100% - 40px));
  min-height: 430px;
  display: grid;
  grid-template-columns: minmax(0, 0.42fr) minmax(0, 0.58fr);
  overflow: hidden;
  border: 1px solid #dce8f6;
  border-radius: 6px;
  background: #fff;
  box-shadow: 0 16px 38px rgba(31, 41, 55, 0.06);
}

.community-media {
  min-height: 430px;
  background: url("assets/community-bg.jpg") center / cover no-repeat;
}

.community-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 50px 56px;
  background: #fff;
}

.community-content span {
  color: var(--blue);
  font-family: Arial, sans-serif;
  font-size: 20px;
  font-weight: 900;
}

.community-content h2 {
  margin: 12px 0 22px;
  color: #222;
  font-size: clamp(30px, 4vw, 40px);
  line-height: 1.2;
}

.community-content p {
  max-width: 610px;
  margin: 0 0 30px;
  color: #475569;
  font-size: 16px;
  line-height: 1.75;
}

.community-content .button {
  min-width: 220px;
  align-self: flex-start;
}

.application-section {
  background: #fbfcff;
}

.cooperation {
  background:
    radial-gradient(circle at 15% 10%, rgba(39, 89, 199, 0.09), transparent 28%),
    linear-gradient(180deg, #fff 0%, #f3f7fe 100%);
}

.contact-panel {
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  box-shadow: 0 14px 34px rgba(31, 41, 55, 0.06);
}

.contact-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.contact-panel > p {
  margin: 0 0 26px;
  color: #475569;
  font-size: 18px;
}

.contact-panel dl {
  display: grid;
  gap: 18px;
  margin: 0;
}

.contact-panel dl div {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 18px;
}

.contact-panel dt {
  color: #64748b;
  font-weight: 700;
}

.contact-panel dd {
  margin: 0;
  color: #243245;
}

.contact-panel a {
  color: var(--blue);
  font-weight: 700;
}

.site-footer {
  background: #1f2541;
  color: #d9d9d9;
  padding: 44px 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 36px;
  align-items: center;
}

.site-footer img {
  width: 168px;
  height: auto;
  margin-bottom: 14px;
  filter: saturate(0.9);
}

.site-footer p {
  margin: 0;
  color: #cfcfcf;
  line-height: 1.8;
}

.footer-meta {
  text-align: right;
}

.about-hero {
  min-height: 300px;
}

.about-hero .hero-content {
  min-height: 300px;
}

.about-hero .hero-subtitle {
  font-size: clamp(23px, 3vw, 32px);
}

.about-intro {
  background: #fff;
}

.about-values {
  padding: 58px 0;
  background: #1f2541;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 32px;
}

.values-grid article {
  min-height: 198px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #fff;
  text-align: center;
}

.values-grid img {
  width: 91px;
  height: 91px;
  margin-bottom: 18px;
}

.values-grid h3 {
  margin: 0 0 8px;
  font-size: 20px;
}

.values-grid p {
  margin: 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: 14px;
}

.about-vision {
  background: #fafafa;
}

.vision-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 72px 84px;
  align-items: center;
}

.vision-media {
  overflow: hidden;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.vision-media img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.vision-grid article span {
  display: block;
  margin-bottom: 12px;
  color: var(--blue);
  font-family: Arial, sans-serif;
  font-size: 18px;
  font-weight: 900;
}

.vision-grid article h2 {
  margin: 0 0 24px;
  color: #333;
  font-size: clamp(26px, 3vw, 34px);
  line-height: 1.25;
}

.vision-grid article h2::after {
  content: "";
  display: block;
  width: 78px;
  height: 4px;
  margin-top: 24px;
  background: var(--blue);
}

.vision-grid article p {
  margin: 0;
  color: #666;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.75;
}

@media (max-width: 980px) {
  .header-inner {
    gap: 16px;
  }

  .header-copy {
    display: none;
  }

  .menu-toggle {
    display: block;
    margin-left: auto;
  }

  .nav {
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    border-top: 1px solid var(--line);
    background: #fff;
  }

  .nav.is-open {
    display: flex;
  }

  .nav a {
    height: 52px;
    padding: 0 28px;
    border-bottom: 1px solid #eef2f7;
  }

  .split,
  .feature-topline,
  .feature-grid,
  .community-inner,
  .capability-grid,
  .values-grid,
  .vision-grid {
    grid-template-columns: 1fr;
  }

  .product-layout {
    grid-template-columns: 1fr;
    gap: 28px;
  }

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

  .hero-proof span:nth-child(2) {
    border-right: 0;
  }

  .hero-proof span:nth-child(-n + 2) {
    border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  }

  .capability-band {
    margin-top: 0;
    padding: 0;
    background: #13213d;
  }

  .capability-grid article {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  }

  .capability-grid article:last-child {
    border-bottom: 0;
  }

  .section-heading.align-right {
    text-align: left;
  }

  .product-intro-panel {
    position: static;
    min-height: auto;
    padding: 0;
  }

  .community-media {
    min-height: 260px;
  }

  .community-content {
    padding: 42px 38px;
  }

  .values-grid {
    gap: 12px;
  }

  .footer-inner {
    display: grid;
  }

  .footer-meta {
    text-align: left;
  }
}

@media (max-width: 640px) {
  .container {
    width: min(100% - 28px, 1200px);
  }

  .brand img {
    width: 148px;
    height: auto;
  }

  .hero,
  .hero-content {
    min-height: 620px;
  }

  .eyebrow {
    font-size: 34px;
  }

  .hero-note {
    margin-top: 28px;
    font-size: 16px;
  }

  .hero-proof {
    margin-top: 26px;
  }

  .section {
    padding: 64px 0;
  }

  .community {
    padding: 64px 0;
  }

  .community-inner {
    width: min(100% - 28px, 1040px);
  }

  .community-content {
    padding: 34px 24px 38px;
  }

  .community-content .button {
    width: 100%;
    min-width: 0;
  }

  .split {
    gap: 28px;
  }

  .section-heading h2 {
    font-size: 29px;
  }

  .intro-text {
    font-size: 16px;
  }

  .product-copy {
    padding: 28px 0 0;
    border-left: 0;
    border-top: 1px solid #dce8f6;
  }

  .product-copy::before {
    width: 86px;
    height: 3px;
  }

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

  .value-list {
    grid-template-columns: 1fr;
  }

  .feature-card,
  .contact-panel {
    padding: 22px;
  }

  .feature-topline article {
    padding: 0 22px 26px;
  }

  .feature-photo {
    margin: 0 -22px;
  }

  .contact-panel dl div {
    grid-template-columns: 1fr;
    gap: 6px;
  }
}