* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #1a6cff;
  --primary-dark: #0b4dc0;
  --accent: #00c48c;
  --text: #1f2b3a;
  --text-light: #5d6b7f;
  --bg-light: #f4f8fc;
  --bg-white: #ffffff;
  --border: #e3ebf5;
  --radius: 14px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", sans-serif;
  color: var(--text);
  line-height: 1.75;
  background: var(--bg-white);
  font-size: 16px;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--primary-dark);
}

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

ul {
  list-style: none;
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
}

.section {
  padding: 70px 0;
}

.section.alt {
  background: var(--bg-light);
}

.section-head {
  text-align: center;
  margin-bottom: 45px;
}

.section-head h2 {
  font-size: 32px;
  margin-bottom: 12px;
}

.section-head h2 .ico {
  margin-right: 10px;
}

.section-head p {
  color: var(--text-light);
  max-width: 760px;
  margin: 0 auto;
}

header.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #ffffffee;
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.logo {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo .mark {
  color: var(--primary);
}

.logo em {
  font-style: normal;
  color: var(--primary);
}

nav.main-nav ul {
  display: flex;
  gap: 6px;
}

nav.main-nav a {
  display: block;
  padding: 8px 16px;
  border-radius: 8px;
  color: var(--text);
  font-weight: 500;
}

nav.main-nav a:hover,
nav.main-nav a.active {
  background: var(--bg-light);
  color: var(--primary);
}

.nav-toggle {
  display: none;
  font-size: 26px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text);
}

.btn {
  display: inline-block;
  padding: 13px 34px;
  border-radius: 999px;
  font-size: 17px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: transform 0.15s, box-shadow 0.15s;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 22px rgba(26, 108, 255, 0.25);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
}

.btn-outline {
  background: #fff;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.hero {
  background: linear-gradient(135deg, #0b1f4d 0%, #10347c 55%, #0b6b5d 100%);
  color: #fff;
  padding: 90px 0 100px;
  position: relative;
  overflow: hidden;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: center;
}

.hero h1 {
  font-size: 42px;
  line-height: 1.3;
  margin-bottom: 20px;
}

.hero h1 em {
  font-style: normal;
  color: #6fe3c0;
}

.hero .lead {
  font-size: 18px;
  color: #cfe0ff;
  margin-bottom: 32px;
  max-width: 620px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-visual {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 22px;
  padding: 30px;
  text-align: center;
}

.hero-visual .phone {
  font-size: 70px;
  margin-bottom: 14px;
}

.hero-visual .stat-row {
  display: flex;
  justify-content: space-around;
  margin-top: 22px;
  color: #cfe0ff;
  font-size: 14px;
}

.hero-visual .stat-row strong {
  display: block;
  font-size: 22px;
  color: #fff;
}

.hero-badge {
  display: inline-block;
  background: rgba(0, 196, 140, 0.2);
  color: #7ff0cf;
  border: 1px solid rgba(0, 196, 140, 0.45);
  padding: 5px 14px;
  border-radius: 999px;
  font-size: 14px;
  margin-bottom: 18px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

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

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
}

.card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 26px;
  transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 14px 30px rgba(15, 45, 90, 0.12);
}

.card .card-ico {
  font-size: 38px;
  margin-bottom: 14px;
}

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

.card p {
  color: var(--text-light);
  font-size: 15px;
}

.feature-list {
  margin-top: 18px;
}

.feature-list li {
  padding: 5px 0;
  color: var(--text-light);
  font-size: 15px;
}

.download-panel {
  background: linear-gradient(135deg, #10214a, #0b4dc0);
  border-radius: 20px;
  color: #fff;
  padding: 55px 45px;
  display: grid;
  grid-template-columns: 1fr 0.8fr;
  gap: 40px;
  align-items: center;
}

.download-panel h2 {
  font-size: 30px;
  margin-bottom: 14px;
}

.download-panel p {
  color: #cfe0ff;
  margin-bottom: 22px;
}

.download-qr {
  background: #fff;
  color: var(--text);
  border-radius: 16px;
  padding: 28px 20px;
  text-align: center;
}

.download-qr .qr {
  font-size: 64px;
  margin-bottom: 10px;
}

.news-list article {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 28px;
  transition: transform 0.2s, box-shadow 0.2s;
}

.news-list article:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 26px rgba(15, 45, 90, 0.1);
}

.news-list h3 {
  font-size: 19px;
  margin-bottom: 10px;
}

.news-list h3 a {
  color: var(--text);
}

.news-list h3 a:hover {
  color: var(--primary);
}

.news-meta {
  font-size: 13px;
  color: #8b98ab;
  margin-bottom: 10px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.news-list p {
  color: var(--text-light);
  font-size: 15px;
}

.more-link {
  display: inline-block;
  margin-top: 14px;
  font-weight: 600;
}

.steps-list {
  counter-reset: step;
}

.steps-list li {
  position: relative;
  padding: 22px 24px 22px 74px;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 18px;
}

.steps-list li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 22px;
  top: 22px;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.steps-list h3 {
  font-size: 18px;
  margin-bottom: 6px;
}

.steps-list p {
  color: var(--text-light);
  font-size: 15px;
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 26px;
  margin-bottom: 16px;
  background: var(--bg-white);
}

.faq-item h3 {
  font-size: 17px;
  margin-bottom: 8px;
}

.faq-item p {
  color: var(--text-light);
  font-size: 15px;
}

.about-text h2 {
  font-size: 28px;
  margin-bottom: 16px;
}

.about-text p {
  color: var(--text-light);
  margin-bottom: 14px;
}

.stat-card {
  text-align: center;
  padding: 26px 10px;
}

.stat-card strong {
  display: block;
  font-size: 30px;
  color: var(--primary);
  margin-bottom: 6px;
}

.stat-card span {
  color: var(--text-light);
  font-size: 14px;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}

.contact-item {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
}

.contact-item .c-ico {
  font-size: 36px;
  margin-bottom: 12px;
}

.contact-item h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.contact-item p {
  color: var(--text-light);
  font-size: 15px;
  word-break: break-all;
}

.contact-form-panel {
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 40px;
}

.contact-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-top: 24px;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-field.full {
  grid-column: 1 / -1;
}

.form-field label {
  font-weight: 600;
  font-size: 14px;
}

.form-field input,
.form-field textarea,
.form-field select {
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 15px;
  font-family: inherit;
  background: #fff;
}

.form-field input:focus,
.form-field textarea:focus,
.form-field select:focus {
  outline: 2px solid rgba(26, 108, 255, 0.35);
  border-color: var(--primary);
}

.breadcrumb {
  background: var(--bg-light);
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
  font-size: 14px;
  color: var(--text-light);
}

.breadcrumb a {
  color: var(--text-light);
}

.page-hero {
  background: linear-gradient(135deg, #0b1f4d, #0b4dc0);
  color: #fff;
  text-align: center;
  padding: 60px 0;
}

.page-hero h1 {
  font-size: 34px;
  margin-bottom: 10px;
}

.page-hero p {
  color: #cfe0ff;
  max-width: 720px;
  margin: 0 auto;
}

.article-wrap {
  max-width: 860px;
  margin: 0 auto;
}

.article-wrap article {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 44px 48px;
}

.article-wrap h1 {
  font-size: 28px;
  line-height: 1.45;
  margin-bottom: 14px;
}

.article-body h2 {
  font-size: 22px;
  margin: 30px 0 12px;
}

.article-body h3 {
  font-size: 18px;
  margin: 22px 0 10px;
}

.article-body p {
  color: var(--text-light);
  margin-bottom: 14px;
}

.article-body ul {
  margin: 0 0 14px 22px;
  list-style: disc;
}

.article-body ul li {
  color: var(--text-light);
  margin-bottom: 6px;
}

.tag-row {
  margin: 22px 0;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.tag-row span {
  background: var(--bg-light);
  border: 1px solid var(--border);
  color: var(--text-light);
  font-size: 13px;
  padding: 4px 12px;
  border-radius: 999px;
}

.related-posts {
  margin-top: 40px;
}

.related-posts h2 {
  font-size: 22px;
  margin-bottom: 18px;
}

footer.site-footer {
  background: #0d1b33;
  color: #9fb0cc;
  padding: 60px 0 30px;
  margin-top: 70px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 34px;
  margin-bottom: 40px;
}

.footer-grid h3 {
  color: #fff;
  font-size: 17px;
  margin-bottom: 16px;
}

.footer-grid p {
  font-size: 14px;
  margin-bottom: 10px;
}

.footer-grid ul li {
  margin-bottom: 10px;
  font-size: 14px;
}

.footer-grid a {
  color: #9fb0cc;
}

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

.footer-bottom {
  border-top: 1px solid #24365a;
  padding-top: 22px;
  text-align: center;
  font-size: 13px;
  color: #6d7f9f;
}

.footer-keywords {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px 18px;
  padding: 18px 0 6px;
  font-size: 13px;
}

.back-top {
  position: fixed;
  right: 26px;
  bottom: 30px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: none;
  background: var(--primary);
  color: #fff;
  font-size: 20px;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s;
  z-index: 90;
}

.back-top.show {
  opacity: 1;
  pointer-events: auto;
}

@media (max-width: 960px) {
  .hero-inner,
  .download-panel {
    grid-template-columns: 1fr;
  }
  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .hero h1 {
    font-size: 32px;
  }
}

@media (max-width: 680px) {
  nav.main-nav {
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--border);
    display: none;
  }
  nav.main-nav.open {
    display: block;
  }
  nav.main-nav ul {
    flex-direction: column;
    padding: 10px 0;
  }
  .nav-toggle {
    display: block;
  }
  .grid-3,
  .grid-4,
  .grid-2,
  .contact-grid,
  .contact-form {
    grid-template-columns: 1fr;
  }
  .hero {
    padding: 60px 0 70px;
  }
  .hero h1 {
    font-size: 27px;
  }
  .section-head h2 {
    font-size: 26px;
  }
  .article-wrap article {
    padding: 28px 22px;
  }
  .download-panel {
    padding: 36px 24px;
  }
}