:root {
  --lemon: #ffe766;
  --lemon-strong: #f8c718;
  --green: #20b36b;
  --green-dark: #0a7f51;
  --ink: #17212b;
  --muted: #5f6d7a;
  --line: #e7edf1;
  --surface: #ffffff;
  --soft: #f6faf5;
  --blue: #22577a;
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: #fffefa;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 76px;
  padding: 0 7vw;
  border-bottom: 1px solid rgba(231, 237, 241, 0.85);
  background: rgba(255, 255, 250, 0.94);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-width: 168px;
}

.brand-logo {
  display: block;
  width: 34px;
  height: 34px;
  object-fit: contain;
  flex: 0 0 auto;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1px;
}

.brand-name {
  display: block;
  color: #1a1a1a;
  font-size: 22px;
  font-weight: 500;
  line-height: 24px;
  letter-spacing: 0;
  white-space: nowrap;
}

.brand-subtitle {
  display: block;
  color: #626d76;
  font-size: 12px;
  font-weight: 500;
  line-height: 16px;
  letter-spacing: 0;
  white-space: nowrap;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(16px, 2vw, 28px);
  min-width: 0;
  flex: 1 1 auto;
  color: #40505f;
  font-size: 15px;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(16px, 2vw, 28px);
  min-width: 0;
  flex: 1 1 auto;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.nav-links a {
  line-height: 46px;
}

.nav-links a:hover {
  color: var(--green-dark);
}

.nav-dropdown {
  position: relative;
  flex: 0 0 auto;
  align-self: stretch;
  display: flex;
  align-items: center;
}

.nav-dropdown-label {
  cursor: pointer;
  line-height: 46px;
  color: #40505f;
  font-size: 15px;
  font-weight: inherit;
  font-family: inherit;
}

.nav-dropdown-label::after {
  content: "";
  display: inline-block;
  width: 0;
  height: 0;
  margin-left: 6px;
  vertical-align: middle;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid #7a8a99;
  transition: transform 0.15s ease;
}

.nav-dropdown:hover .nav-dropdown-label::after,
.nav-dropdown:focus-within .nav-dropdown-label::after {
  transform: rotate(180deg);
}

.nav-dropdown:hover .nav-dropdown-label,
.nav-dropdown:focus-within .nav-dropdown-label {
  color: var(--green-dark);
}

.nav-dropdown-panel {
  display: none;
  position: absolute;
  top: calc(100% - 6px);
  left: 50%;
  z-index: 30;
  min-width: 168px;
  padding: 8px 0;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 14px 36px rgba(23, 33, 43, 0.12);
  transform: translateX(-50%);
}

.nav-dropdown:hover .nav-dropdown-panel,
.nav-dropdown:focus-within .nav-dropdown-panel {
  display: block;
}

.nav-dropdown-panel a {
  display: block;
  padding: 10px 18px;
  line-height: 1.45;
  font-size: 14px;
  color: #40505f;
  white-space: nowrap;
}

.nav-dropdown-panel a:hover {
  color: var(--green-dark);
  background: var(--soft);
}

.about-band .section-heading p:not(.eyebrow) {
  max-width: 720px;
}

.header-cta,
.primary-button,
.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border-radius: 8px;
  font-weight: 700;
  white-space: nowrap;
}

.header-cta,
.primary-button {
  color: #0f321d;
  background: var(--lemon);
  box-shadow: 0 12px 28px rgba(248, 199, 24, 0.25);
}

.header-cta:hover,
.primary-button:hover {
  background: #ffdc36;
  transform: translateY(-1px);
}

.secondary-button {
  border: 1px solid #bad9c8;
  color: var(--green-dark);
  background: #fff;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(420px, 1.05fr);
  gap: 46px;
  align-items: center;
  min-height: calc(100vh - 76px);
  padding: 68px 7vw 58px;
  overflow: hidden;
}

.hero-copy {
  max-width: 650px;
}

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

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

h1 {
  margin-bottom: 22px;
  font-size: clamp(38px, 5.5vw, 70px);
  line-height: 1.08;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(28px, 3.2vw, 44px);
  line-height: 1.16;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
}

.lead {
  max-width: 580px;
  color: var(--muted);
  font-size: 20px;
  line-height: 1.78;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 34px 0;
}

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

.hero-stats div {
  padding: 18px 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.8);
}

.hero-stats dt {
  margin-bottom: 6px;
  color: var(--blue);
  font-size: 25px;
  font-weight: 800;
}

.hero-stats dd {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.hero-visual {
  position: relative;
  margin: 0;
}

.hero-visual img {
  display: block;
  width: min(720px, 100%);
  margin-left: auto;
  border-radius: 8px;
  box-shadow: 0 30px 70px rgba(34, 87, 122, 0.18);
}

.trust-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin: 0 7vw;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--line);
}

.trust-strip span {
  padding: 22px 14px;
  text-align: center;
  color: var(--green-dark);
  font-weight: 800;
  background: #fff;
}

.section {
  padding: 92px 7vw;
}

.section-heading {
  max-width: 760px;
  margin: 0 auto 42px;
  text-align: center;
}

.section-heading p:not(.eyebrow),
.compact p:not(.eyebrow),
.final-cta p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.75;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.feature-card,
.solution-list article,
.service-grid article {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.feature-card {
  min-height: 218px;
  padding: 26px;
}

.feature-card p,
.solution-list p,
.service-grid p,
.faq-list p {
  color: var(--muted);
  line-height: 1.75;
}

.icon {
  display: inline-grid;
  width: 44px;
  height: 44px;
  margin-bottom: 22px;
  place-items: center;
  border-radius: 8px;
  color: var(--green-dark);
  font-weight: 800;
  background: #eff9e8;
}

.split-section {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 42px;
  align-items: center;
  background: var(--soft);
}

.compact {
  max-width: 540px;
  margin: 0;
  text-align: left;
}

.compact .primary-button {
  margin-top: 14px;
}

.solution-list {
  display: grid;
  gap: 16px;
}

.solution-list article {
  padding: 28px;
  border-left: 6px solid var(--lemon-strong);
}

.service-band {
  color: #fff;
  background: #0d5f45;
}

.service-band .eyebrow,
.service-band h2 {
  color: #fff;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 34px;
}

.service-grid article {
  padding: 26px;
  color: var(--ink);
}

.faq-section {
  background: #fff;
}

.faq-list {
  max-width: 880px;
  margin: 0 auto;
}

.faq-list details {
  border-top: 1px solid var(--line);
}

.faq-list details:last-child {
  border-bottom: 1px solid var(--line);
}

.faq-list summary {
  cursor: pointer;
  padding: 24px 4px;
  font-size: 19px;
  font-weight: 800;
}

.faq-list p {
  margin-bottom: 24px;
}

.final-cta {
  margin: 0 7vw 84px;
  padding: 56px 7vw;
  border-radius: 8px;
  text-align: center;
  background: linear-gradient(135deg, #fff4a8, #e7f9d7 58%, #d9f1ff);
}

.final-cta p {
  max-width: 620px;
  margin-right: auto;
  margin-left: auto;
}

.site-footer {
  margin-top: 0;
  padding: 52px 0 36px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
  background: linear-gradient(180deg, #fbfef8 0%, var(--soft) 42%, #eef6f0 100%);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 7vw;
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 292px) minmax(0, 1fr);
  gap: clamp(28px, 4vw, 56px);
  padding-bottom: 40px;
  border-bottom: 1px solid var(--line);
}

.footer-brand-col {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
}

.footer-brand-logo {
  width: 40px;
  height: 40px;
  object-fit: contain;
  flex-shrink: 0;
}

.footer-brand-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.footer-brand-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--green-dark);
  letter-spacing: 0.02em;
}

.footer-brand-tagline {
  font-size: 12px;
  color: var(--muted);
}

.footer-contact-card {
  padding: 22px 22px 20px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  box-shadow: 0 6px 20px rgba(23, 33, 43, 0.04);
  overflow: visible;
}

.footer-contact-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 12px;
  font-size: 14px;
  color: var(--ink);
  position: relative;
  z-index: 0;
}

.footer-contact-row:has(.footer-social-item:hover),
.footer-contact-row:has(.footer-social-item:focus-within),
.footer-contact-row:has(.footer-social-item:focus) {
  z-index: 70;
}

.footer-contact-row:last-of-type {
  margin-bottom: 0;
}

.footer-contact-row a {
  color: var(--green-dark);
  font-weight: 600;
}

.footer-contact-row a:hover {
  text-decoration: underline;
}

.footer-contact-icon {
  display: inline-flex;
  flex-shrink: 0;
  color: var(--green);
}

.footer-contact-wecom .footer-social {
  min-width: 76px;
}

.footer-contact-hours {
  margin: 14px 0 16px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

.footer-follow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--muted);
}

.footer-social-item {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
}

.footer-social-item:focus {
  outline: 2px solid rgba(32, 179, 107, 0.35);
  outline-offset: 2px;
}

.footer-social-item:focus .footer-social-qr {
  display: block;
}

.footer-social-qr {
  display: none;
  position: absolute;
  top: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%);
  width: 180px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  box-shadow: 0 18px 46px rgba(23, 33, 43, 0.12);
  z-index: 60;
}

.footer-social-qr-img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 10px;
}

.footer-social-item:hover .footer-social-qr,
.footer-social-item:focus-within .footer-social-qr {
  display: block;
}

.footer-follow-label {
  margin-right: 2px;
}

.footer-social {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 52px;
  height: 28px;
  padding: 0 8px;
  border-radius: 999px;
  border: 1px solid #d4e5dc;
  background: var(--soft);
  font-size: 11px;
  font-weight: 600;
  color: #3d5c4d;
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(16px, 3vw, 32px);
}

.footer-col-title {
  margin: 0 0 14px;
  font-size: 15px;
  font-weight: 800;
  color: var(--ink);
  letter-spacing: 0.02em;
}

.footer-col-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-col-list li {
  margin-bottom: 8px;
}

.footer-col-list li:last-child {
  margin-bottom: 0;
}

.footer-col-list a {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.5;
}

.footer-col-list a:hover {
  color: var(--green-dark);
}

.footer-friend-wrap {
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.footer-friend-links {
  margin: 0;
  font-size: 13px;
  line-height: 1.85;
  color: var(--muted);
}

.footer-friend-label {
  margin-right: 4px;
  font-weight: 700;
  color: var(--ink);
}

.footer-friend-links a {
  color: var(--muted);
}

.footer-friend-links a:hover {
  color: var(--green-dark);
}

.footer-friend-sep {
  margin: 0 6px;
  color: #c5d0d6;
  user-select: none;
}

.footer-bottom {
  padding-top: 22px;
  text-align: center;
}

.footer-legal-line {
  margin: 0 0 10px;
  font-size: 12px;
  line-height: 1.75;
  color: #6f7d86;
}

.footer-legal-line a {
  color: #6f7d86;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.footer-legal-line a:hover {
  color: var(--green-dark);
}

.footer-icp-line {
  margin: 10px 0 0;
  text-align: center;
  font-size: 12px;
  line-height: 1.75;
  color: #6f7d86;
}

.footer-icp-line a {
  color: #6f7d86;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.footer-icp-line a:hover {
  color: var(--green-dark);
}

.footer-legal-sep {
  margin: 0 8px;
  color: #c5d0d6;
  user-select: none;
}

.footer-partner-line {
  margin: 0;
  font-size: 12px;
  color: #8a97a0;
}

@media (max-width: 980px) {
  .site-header {
    align-items: flex-start;
    flex-wrap: wrap;
    padding: 16px 5vw;
  }

  .nav {
    order: 3;
    width: 100%;
    justify-content: flex-start;
    gap: 18px;
  }

  .nav-links {
    justify-content: flex-start;
    gap: 18px;
  }

  .hero,
  .split-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding: 52px 5vw;
  }

  .hero-visual img {
    width: 100%;
  }

  .trust-strip,
  .feature-grid,
  .service-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .section,
  .split-section {
    padding: 72px 5vw;
  }

  .trust-strip,
  .final-cta {
    margin-right: 5vw;
    margin-left: 5vw;
  }

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

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

@media (max-width: 640px) {
  .header-cta {
    width: 100%;
  }

  .hero-stats,
  .trust-strip,
  .feature-grid,
  .service-grid {
    grid-template-columns: 1fr;
  }

  .hero-actions a,
  .final-cta a,
  .compact .primary-button {
    width: 100%;
  }

  h1 {
    font-size: 38px;
  }

  .lead {
    font-size: 17px;
  }

  .site-footer {
    padding: 40px 0 28px;
  }

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

  .footer-friend-links {
    font-size: 12px;
  }

  .footer-friend-sep {
    display: none;
  }

  .footer-friend-links a {
    display: inline-block;
    margin-right: 10px;
    margin-bottom: 4px;
  }

  .footer-legal-line {
    display: flex;
    flex-direction: column;
    gap: 6px;
  }

  .footer-legal-sep {
    display: none;
  }
}