/* roulang page: index */
:root {
  --primary: #2563D9;
  --primary-dark: #1D4FC0;
  --primary-soft: #EAF2FC;
  --accent: #F27D3E;
  --accent-dark: #E06A2A;
  --accent-soft: #FDF3EA;
  --bg-page: #F5F8FC;
  --bg-card: #FFFFFF;
  --deep: #0B2A52;
  --deep-2: #10213A;
  --title: #14263C;
  --text: #3A4A5E;
  --text-light: #5B6B82;
  --text-weak: #8A9BB0;
  --border: #E1E9F2;
  --divider: #EDF1F7;
  --success: #1BA37C;
  --danger: #D9534F;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 10px;
  --radius-xs: 8px;
  --shadow-card: 0 10px 30px rgba(21,35,56,0.06);
  --shadow-hover: 0 20px 40px rgba(21,35,56,0.12);
  --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
  --transition: all .2s ease;
}

*, *::before, *::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg-page);
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
a {
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition);
}
a:hover {
  color: var(--primary-dark);
}
.container {
  max-width: 1240px;
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
}
.section {
  padding: 90px 0;
}
.section-tight {
  padding: 64px 0;
}
@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .section-tight { padding: 48px 0; }
}
h1, h2, h3, h4, h5, h6 {
  color: var(--title);
  margin: 0 0 16px 0;
  line-height: 1.35;
  font-weight: 700;
  letter-spacing: 0.01em;
}
h1 { font-size: 42px; font-weight: 800; line-height: 1.3; }
h2 { font-size: 30px; }
h3 { font-size: 20px; }
@media (max-width: 768px) {
  h1 { font-size: 29px; line-height: 1.28; }
  h2 { font-size: 23px; }
  h3 { font-size: 18px; }
}
p {
  margin: 0 0 16px;
  line-height: 1.75;
}
.section-title-wrap {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 48px;
}
.section-title-wrap .tagline {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 14px;
}
.section-title-wrap h2 {
  font-size: 30px;
  margin-bottom: 12px;
}
.section-title-wrap p {
  color: var(--text-light);
  font-size: 15px;
}
@media (max-width: 768px) {
  .section-title-wrap h2 { font-size: 23px; }
}

/* Buttons */
.btn-primary, .btn-accent, .btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  font-family: var(--font);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  line-height: 1;
  text-align: center;
}
.btn-primary {
  background: var(--primary);
  color: #fff !important;
}
.btn-primary:hover {
  background: var(--primary-dark);
  box-shadow: 0 8px 24px rgba(37,99,217,0.3);
}
.btn-accent {
  background: var(--accent);
  color: #fff !important;
}
.btn-accent:hover {
  background: var(--accent-dark);
  box-shadow: 0 8px 24px rgba(242,125,62,0.3);
}
.btn-outline {
  background: #fff;
  border: 2px solid var(--primary);
  color: var(--primary) !important;
}
.btn-outline:hover {
  background: var(--primary-soft);
  border-color: var(--primary-dark);
  color: var(--primary-dark) !important;
}
.btn-sm {
  padding: 10px 20px;
  font-size: 14px;
}
.btn-block {
  width: 100%;
}
.btn:focus, .btn-primary:focus, .btn-accent:focus, .btn-outline:focus,
a:focus, button:focus, input:focus, textarea:focus {
  outline: 3px solid rgba(37,99,217,0.35);
  outline-offset: 2px;
}

/* Header & Nav */
.site-header {
  padding-top: 12px;
  position: relative;
  z-index: 50;
  background: transparent;
}
.nav-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  height: 72px;
  padding-left: 0;
  padding-right: 0;
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  padding: 0 24px;
}
.brand {
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex-shrink: 0;
}
.brand-text {
  font-size: 24px;
  font-weight: 800;
  color: var(--title);
  letter-spacing: -0.01em;
}
.brand-text span {
  color: var(--primary);
}
.brand-domain {
  font-size: 12px;
  color: var(--text-weak);
  font-family: "SF Mono", "Menlo", monospace;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}
.nav-link i {
  font-size: 14px;
  color: var(--text-weak);
  transition: var(--transition);
}
.nav-link:hover {
  background: var(--primary-soft);
  color: var(--primary);
}
.nav-link:hover i {
  color: var(--primary);
}
.nav-link.active {
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 600;
  position: relative;
}
.nav-link.active::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 16px;
  background: var(--accent);
  border-radius: 999px;
}
.nav-link.active i {
  color: var(--primary);
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.nav-burger {
  display: none;
  background: none;
  border: none;
  font-size: 22px;
  color: var(--title);
  padding: 8px;
  cursor: pointer;
  border-radius: var(--radius-xs);
}
.nav-burger:hover {
  background: var(--primary-soft);
}
.mobile-menu {
  display: none;
  background: var(--bg-card);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  box-shadow: var(--shadow-hover);
  padding: 16px 20px 24px;
  margin: 0 20px;
}
.mobile-menu.is-open {
  display: block;
}
.mobile-menu a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  font-size: 16px;
  font-weight: 500;
  color: var(--text);
  border-bottom: 1px solid var(--divider);
}
.mobile-menu a:last-child {
  border-bottom: none;
}
.mobile-menu a.active {
  background: var(--primary-soft);
  color: var(--primary);
}
.mobile-menu a i {
  width: 20px;
  text-align: center;
  color: var(--text-weak);
}
.mobile-menu a.active i {
  color: var(--primary);
}
.mobile-menu .btn-accent {
  margin-top: 12px;
  justify-content: center;
}
@media (max-width: 980px) {
  .nav-links, .nav-actions .btn-outline, .nav-actions .btn-accent {
    display: none;
  }
  .nav-burger {
    display: inline-flex;
  }
}

/* Hero */
.hero {
  position: relative;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  padding: 80px 0 96px;
  margin-top: 12px;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(245,248,252,0.88);
  z-index: 1;
}
.hero .container {
  position: relative;
  z-index: 2;
}
.hero-content {
  padding-right: 24px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 20px;
}
.hero h1 {
  margin-bottom: 20px;
}
.hero-sub {
  font-size: 17px;
  color: var(--text-light);
  max-width: 440px;
  margin-bottom: 32px;
  line-height: 1.6;
}
.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 44px;
}
.hero-trust {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
  padding-top: 28px;
  border-top: 1px solid var(--divider);
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 12px;
}
.trust-item .trust-num {
  font-size: 30px;
  font-weight: 800;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}
.trust-item .trust-label {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.4;
}
.hero-image {
  position: relative;
}
.hero-image img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-hover);
  width: 100%;
  border: 1px solid var(--border);
}
.hero-image::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  top: 20px;
  left: 20px;
  border-radius: var(--radius-lg);
  border: 2px dashed var(--primary);
  opacity: .25;
  z-index: -1;
}
@media (max-width: 1024px) {
  .hero { padding: 56px 0 72px; }
  .hero-content { padding-right: 0; margin-bottom: 40px; }
}
@media (max-width: 768px) {
  .hero { padding: 40px 0 56px; }
  .hero-trust { gap: 20px; }
}

/* Pain Points */
.pain-section {
  padding: 90px 0;
}
.pain-card-wrap {
  background: var(--primary-soft);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
}
@media (max-width: 768px) {
  .pain-card-wrap { padding: 32px 20px; }
}
.pain-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 36px;
}
.pain-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px 28px 26px;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
}
.pain-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-hover);
}
.pain-card h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 10px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.pain-card h3 i {
  color: var(--primary);
  font-size: 18px;
  margin-top: 4px;
}
.pain-card p {
  font-size: 14px;
  color: var(--text-weak);
  margin-bottom: 0;
  line-height: 1.65;
}
@media (max-width: 768px) {
  .pain-grid { grid-template-columns: 1fr; gap: 16px; }
}

/* Solutions */
.solution-row {
  margin-bottom: 24px;
}
.solution-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
  height: 100%;
  display: flex;
  flex-direction: column;
}
.solution-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary);
}
.solution-card .card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--primary-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--primary);
  margin-bottom: 18px;
}
.solution-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}
.solution-card ul {
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
  flex: 1;
}
.solution-card ul li {
  font-size: 14px;
  color: var(--text-light);
  padding: 5px 0;
  display: flex;
  align-items: flex-start;
  gap: 8px;
  line-height: 1.5;
}
.solution-card ul li i {
  color: var(--success);
  font-size: 12px;
  margin-top: 5px;
}
.solution-card .link-more {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
}
.solution-card .link-more:hover {
  color: var(--primary-dark);
}
.solution-wide {
  padding: 0;
  overflow: hidden;
  flex-direction: row;
  align-items: stretch;
}
.solution-wide .soln-img {
  width: 46%;
  min-height: 260px;
  overflow: hidden;
  border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}
.solution-wide .soln-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.solution-wide .soln-body {
  padding: 32px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.solution-emphasis {
  background: var(--accent-soft);
  border: 1px solid rgba(242,125,62,0.15);
}
.solution-emphasis .card-icon {
  background: var(--accent-soft);
  color: var(--accent);
}
.solution-emphasis ul li i {
  color: var(--accent);
}
.solution-deep {
  background: var(--deep);
  border: none;
}
.solution-deep h3 {
  color: #fff;
}
.solution-deep .card-icon {
  background: rgba(255,255,255,0.15);
  color: #fff;
}
.solution-deep ul li {
  color: rgba(255,255,255,0.75);
}
.solution-deep ul li i {
  color: var(--accent);
}
.solution-deep .link-more {
  color: #fff;
  border-bottom: 2px solid rgba(255,255,255,0.3);
  padding-bottom: 2px;
}
.solution-deep .link-more:hover {
  border-bottom-color: #fff;
}
.solution-accent-top {
  position: relative;
}
.solution-accent-top::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--accent);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}
@media (max-width: 1024px) {
  .solution-wide { flex-direction: column; }
  .solution-wide .soln-img { width: 100%; max-height: 220px; min-height: 0; border-radius: var(--radius-lg) var(--radius-lg) 0 0; }
}
@media (max-width: 768px) {
  .solution-card { padding: 24px; }
}

/* Data Band */
.data-section {
  background: var(--deep);
  padding: 70px 0;
  position: relative;
  overflow: hidden;
}
.data-section::after {
  content: '';
  position: absolute;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: rgba(37,99,217,0.25);
  right: -80px;
  bottom: -80px;
}
.data-section .container {
  position: relative;
  z-index: 1;
}
.data-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-bottom: 24px;
}
.data-item {
  text-align: center;
  padding: 12px 8px;
}
.data-num {
  font-size: 64px;
  font-weight: 800;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
  margin-bottom: 8px;
}
.data-label {
  font-size: 14px;
  color: rgba(255,255,255,0.7);
}
.data-note {
  text-align: center;
  font-size: 14px;
  color: rgba(255,255,255,0.45);
  margin-bottom: 0;
  letter-spacing: 0.02em;
}
@media (max-width: 768px) {
  .data-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .data-num { font-size: 44px; }
}

/* Lead Form Section */
.lead-section {
  padding: 90px 0;
}
.lead-card {
  background: var(--accent-soft);
  border-radius: var(--radius-lg);
  padding: 48px;
  display: flex;
  gap: 48px;
}
.lead-left {
  flex: 1;
}
.lead-left h2 {
  margin-bottom: 12px;
}
.lead-left > p {
  color: var(--text-light);
  margin-bottom: 24px;
}
.lead-points {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
}
.lead-points li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 15px;
  color: var(--text);
  padding: 10px 0;
  border-bottom: 1px solid rgba(20,38,60,0.06);
}
.lead-points li:last-child {
  border-bottom: none;
}
.lead-points li i {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
}
.lead-form {
  flex: 1;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-card);
}
.lead-form .form-group {
  margin-bottom: 18px;
}
.lead-form label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--title);
  margin-bottom: 8px;
}
.lead-form input,
.lead-form textarea,
.lead-form select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid #D3DEEB;
  border-radius: var(--radius-xs);
  font-size: 15px;
  font-family: var(--font);
  background: #fff;
  color: var(--text);
  transition: var(--transition);
}
.lead-form input::placeholder,
.lead-form textarea::placeholder {
  color: #A2B1C4;
}
.lead-form input:focus,
.lead-form textarea:focus,
.lead-form select:focus {
  border-color: var(--primary);
  outline: none;
  box-shadow: 0 0 0 3px rgba(37,99,217,0.12);
}
.lead-form textarea {
  min-height: 90px;
  resize: vertical;
}
.privacy-note {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-weak);
  margin-top: 14px;
  margin-bottom: 0;
}
.privacy-note i {
  color: var(--success);
  font-size: 13px;
}
.form-success {
  display: none;
  align-items: center;
  gap: 10px;
  background: rgba(27,163,124,0.1);
  color: var(--success);
  border-radius: var(--radius-xs);
  padding: 12px 14px;
  font-size: 14px;
  margin-top: 12px;
}
.form-success.show {
  display: flex;
}
@media (max-width: 1024px) {
  .lead-card { flex-direction: column; gap: 32px; padding: 32px; }
}
@media (max-width: 768px) {
  .lead-card { padding: 24px; }
  .lead-form { padding: 24px; }
}

/* News */
.news-section {
  padding: 90px 0;
}
.news-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 36px;
}
.news-head h2 {
  margin-bottom: 0;
}
.news-more {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
}
.news-list {
  max-width: 960px;
  margin: 0 auto;
}
.news-card {
  display: flex;
  align-items: center;
  gap: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  margin-bottom: 16px;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
}
.news-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary);
}
.news-date {
  width: 64px;
  min-width: 64px;
  height: 64px;
  background: var(--primary-soft);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.1;
}
.news-date small {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-weak);
  margin-top: 4px;
}
.news-main {
  flex: 1;
  min-width: 0;
}
.news-main h3 {
  font-size: 19px;
  margin-bottom: 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.news-main .summary {
  font-size: 14px;
  color: var(--text-light);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin: 0;
}
.news-cat {
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
  flex-shrink: 0;
}
.news-link {
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  flex-shrink: 0;
}
@media (max-width: 768px) {
  .news-card { flex-wrap: wrap; padding: 16px; }
  .news-date { width: 48px; min-width: 48px; height: 48px; font-size: 18px; }
  .news-cat { display: none; }
  .news-link { width: 100%; text-align: center; padding-top: 8px; border-top: 1px solid var(--divider); }
  .news-main h3 { white-space: normal; }
}

/* Empty State */
.empty-state {
  background: var(--bg-card);
  border: 1px dashed #B8C7D9;
  border-radius: var(--radius-lg);
  padding: 56px 32px;
  text-align: center;
  color: var(--text-weak);
  margin-bottom: 16px;
}
.empty-state i {
  font-size: 36px;
  margin-bottom: 12px;
  color: #B8C7D9;
}
.empty-state p {
  margin-bottom: 0;
  font-size: 15px;
}

/* FAQ */
.faq-section {
  padding: 90px 0;
}
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  background: transparent;
  border: none;
}
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  padding: 0;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
}
.faq-item:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-hover);
}
.faq-item .faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  font-size: 18px;
  font-weight: 700;
  color: var(--title);
  cursor: pointer;
  background: transparent;
  border: none;
  font-family: var(--font);
  width: 100%;
  text-align: left;
  transition: var(--transition);
}
.faq-item .faq-q:hover {
  color: var(--primary);
}
.faq-item .faq-q .faq-icon {
  width: 32px;
  height: 32px;
  min-width: 32px;
  border-radius: 50%;
  background: var(--primary-soft);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: transform .25s;
}
.faq-item.is-active .faq-q .faq-icon {
  transform: rotate(45deg);
}
.faq-item .faq-a {
  padding: 0 24px 22px;
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.75;
}
.faq-item .faq-a p {
  margin: 0;
}
@media (max-width: 768px) {
  .faq-item .faq-q { font-size: 16px; padding: 16px 18px; }
  .faq-item .faq-a { padding: 0 18px 18px; }
}

/* CTA Banner */
.cta-section {
  padding: 0 0 90px;
}
.cta-banner {
  background: linear-gradient(90deg, var(--primary) 50%, var(--deep) 50%);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: 48px 56px;
  box-shadow: var(--shadow-hover);
  position: relative;
  overflow: hidden;
}
.cta-banner::after {
  content: '';
  position: absolute;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
  right: -40px;
  bottom: -40px;
}
.cta-banner .cta-text h2 {
  color: #fff;
  margin-bottom: 8px;
}
.cta-banner .cta-text p {
  color: rgba(255,255,255,0.8);
  font-size: 15px;
  margin-bottom: 0;
}
.cta-banner .btn-accent {
  flex-shrink: 0;
}
@media (max-width: 768px) {
  .cta-banner { flex-direction: column; padding: 32px 24px; text-align: center; background: linear-gradient(180deg, var(--primary) 50%, var(--deep) 50%); }
}

/* Footer */
.site-footer {
  background: var(--deep-2);
  padding: 64px 0 0;
  color: rgba(255,255,255,0.6);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 48px;
}
.footer-brand {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 12px;
}
.footer-brand span {
  color: var(--accent);
}
.footer-brand small {
  font-size: 12px;
  color: rgba(255,255,255,0.4);
}
.footer-desc {
  font-size: 14px;
  color: rgba(255,255,255,0.55);
  line-height: 1.7;
  margin-bottom: 0;
  max-width: 280px;
}
.footer-col h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 18px;
}
.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul a {
  color: rgba(255,255,255,0.55);
  font-size: 14px;
  transition: var(--transition);
}
.footer-col ul a:hover {
  color: #fff;
  padding-left: 4px;
}
.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: rgba(255,255,255,0.55);
}
.footer-contact li i {
  color: var(--accent);
  margin-top: 4px;
  width: 16px;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 20px 0;
  text-align: center;
}
.footer-bottom p {
  margin: 0;
  font-size: 14px;
  color: rgba(255,255,255,0.35);
}
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
}

/* Modal */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(20,25,35,0.5);
  z-index: 999;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal-overlay.is-open {
  display: flex;
}
.modal-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 520px;
  padding: 40px;
  position: relative;
  box-shadow: var(--shadow-hover);
  animation: modalIn .25s ease;
}
@keyframes modalIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-page);
  border: none;
  font-size: 16px;
  color: var(--text-light);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.modal-close:hover {
  background: var(--primary-soft);
  color: var(--primary);
}
.modal-card h3 {
  margin-bottom: 8px;
}
.modal-card > p {
  color: var(--text-light);
  font-size: 14px;
  margin-bottom: 24px;
}

/* Accordion custom */
.accordion.faq-accordion {
  background: transparent;
  border: none;
  margin: 0;
}
.faq-accordion .accordion-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
}
.faq-accordion .accordion-item:last-child {
  margin-bottom: 0;
}
.faq-accordion .accordion-title {
  background: transparent !important;
  border: none !important;
  color: var(--title) !important;
  font-size: 18px;
  font-weight: 700;
  font-family: var(--font);
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
}
.faq-accordion .accordion-title:hover {
  color: var(--primary) !important;
  background: var(--primary-soft) !important;
}
.faq-accordion .accordion-title::after {
  content: none !important;
}
.faq-accordion .accordion-item .faq-icon {
  width: 32px;
  height: 32px;
  min-width: 32px;
  border-radius: 50%;
  background: var(--primary-soft);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: transform .25s;
}
.faq-accordion .accordion-item.is-active .faq-icon {
  transform: rotate(45deg);
}
.faq-accordion .accordion-content {
  background: transparent !important;
  border: none !important;
  padding: 0 24px 22px !important;
  color: var(--text-light);
  font-size: 15px;
  line-height: 1.75;
}
.faq-accordion .accordion-content p {
  margin: 0;
}

/* Utility */
.text-center { text-align: center; }
.mt-24 { margin-top: 24px; }
.mb-0 { margin-bottom: 0; }

/* Responsive fixes */
@media (max-width: 1024px) {
  .solution-row .grid-x > .cell {
    margin-bottom: 16px;
  }
}
@media (max-width: 640px) {
  .hero-cta .btn-primary,
  .hero-cta .btn-accent,
  .hero-cta .btn-outline {
    width: 100%;
  }
  .nav-card {
    height: 60px;
  }
  .nav-inner {
    height: 60px;
    padding: 0 16px;
  }
  .brand-text {
    font-size: 20px;
  }
  .cta-banner .btn-accent {
    width: 100%;
  }
}

/* roulang page: category1 */
:root {
  --primary: #2563D9;
  --primary-dark: #1D4FAB;
  --primary-soft: #EAF2FC;
  --accent: #F27D3E;
  --accent-dark: #E06A2C;
  --accent-soft: #FDF3EA;
  --bg-page: #F5F8FC;
  --bg-card: #FFFFFF;
  --deep: #0B2A52;
  --text-main: #14263C;
  --text-secondary: #5B6B82;
  --text-muted: #8A9BB0;
  --border: #E1E9F2;
  --divider: #EDF1F7;
  --success: #1BA37C;
  --error: #D9534F;
  --shadow-card: 0 10px 30px rgba(21,35,56,0.06);
  --shadow-hover: 0 20px 40px rgba(21,35,56,0.12);
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 10px;
  --radius-xs: 8px;
  --radius-pill: 999px;
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 110px;
}

body {
  font-family: var(--font-family);
  background: var(--bg-page);
  color: var(--text-main);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color .2s;
}
a:hover { color: var(--primary-dark); }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 3px solid rgba(37,99,217,0.35);
  outline-offset: 2px;
}

img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== 导航 ===== */
.site-header {
  padding-top: 12px;
  position: relative;
  z-index: 999;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 0 24px;
  height: 72px;
  border: 1px solid rgba(225,233,242,0.7);
}
.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 2px;
  font-size: 26px;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: 0.01em;
  flex-shrink: 0;
}
.brand span { color: var(--primary); }
.brand small {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 400;
  margin-left: 8px;
  letter-spacing: 0.02em;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: background .2s, color .2s;
  cursor: pointer;
  white-space: nowrap;
}
.nav-link i {
  font-size: 15px;
  color: var(--text-muted);
  transition: color .2s;
}
.nav-link:hover {
  background: var(--primary-soft);
  color: var(--primary);
}
.nav-link:hover i { color: var(--primary); }
.nav-link.active {
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 600;
  position: relative;
  box-shadow: inset 3px 0 0 var(--accent);
}
.nav-link.active i { color: var(--primary); }
.header-cta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 22px;
  color: var(--text-main);
  cursor: pointer;
  padding: 8px;
  border-radius: 8px;
}
.nav-toggle:hover { background: var(--primary-soft); }

/* ===== 按钮 ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  padding: 12px 28px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: background .2s, box-shadow .2s;
  line-height: 1.2;
}
.btn-primary:hover { background: var(--primary-dark); color:#fff; box-shadow: 0 6px 20px rgba(37,99,217,0.25); }
.btn-accent {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  padding: 12px 28px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: background .2s, box-shadow .2s;
  line-height: 1.2;
}
.btn-accent:hover { background: var(--accent-dark); color:#fff; box-shadow: 0 6px 20px rgba(242,125,62,0.25); }
.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--bg-card);
  color: var(--primary);
  border: 2px solid var(--primary);
  border-radius: var(--radius-sm);
  padding: 10px 26px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background .2s, color .2s;
  line-height: 1.2;
}
.btn-outline:hover { background: var(--primary-soft); color: var(--primary); }
.btn-outline.small {
  padding: 8px 18px;
  font-size: 14px;
}

/* ===== 分类页 Hero ===== */
.category-hero {
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  background-color: rgba(245,248,252,0.6);
  background-blend-mode: overlay;
  min-height: 240px;
  display: flex;
  align-items: center;
  margin-top: 24px;
  border-radius: var(--radius-lg);
  position: relative;
  border: 1px solid rgba(225,233,242,0.8);
}
.category-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.4);
  border-radius: var(--radius-lg);
}
.category-hero .container {
  position: relative;
  z-index: 2;
}
.hero-category-title {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.hero-category-title h1 {
  font-size: 40px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--text-main);
  letter-spacing: 0.01em;
  margin: 0;
}
.hero-desc {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 12px;
  max-width: 560px;
  line-height: 1.7;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 88px;
  height: 88px;
  background: var(--primary-soft);
  border-radius: var(--radius-lg);
  font-size: 36px;
  color: var(--primary);
  box-shadow: var(--shadow-card);
  margin-left: auto;
}
.category-hero .grid-x {
  align-items: center;
}

/* ===== 分类内容区 ===== */
.category-content {
  padding: 48px 0 80px;
}
.toc-side {
  position: sticky;
  top: 100px;
  align-self: flex-start;
}
.toc-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 28px 24px;
  border: 1px solid var(--border);
}
.toc-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--divider);
}
.toc-card ul li {
  margin-bottom: 4px;
}
.toc-card ul li a {
  display: block;
  padding: 9px 14px;
  border-radius: var(--radius-xs);
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 500;
  border-left: 3px solid transparent;
  transition: background .2s, color .2s, border-color .2s;
}
.toc-card ul li a:hover {
  background: var(--primary-soft);
  color: var(--primary);
  border-left-color: var(--accent);
}
.content-main {
  display: flex;
  flex-direction: column;
  gap: 32px;
}
.section-block {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 40px;
  border: 1px solid var(--border);
  transition: box-shadow .3s;
  scroll-margin-top: 100px;
}
.section-block:hover {
  box-shadow: var(--shadow-hover);
}
.block-tag {
  display: inline-flex;
  align-items: center;
  padding: 6px 16px;
  background: var(--primary-soft);
  color: var(--primary);
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 18px;
  letter-spacing: 0.02em;
}
.section-block h2 {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--text-main);
  margin-bottom: 16px;
  letter-spacing: 0.01em;
}
.section-block p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-secondary);
  margin-bottom: 20px;
  max-width: 78ch;
}
.block-img {
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  margin: 24px 0;
  width: 100%;
  object-fit: cover;
  box-shadow: 0 4px 16px rgba(21,35,56,0.05);
}
.feature-list {
  margin: 20px 0 28px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 24px;
}
.feature-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  color: var(--text-main);
  padding: 10px 14px;
  background: var(--primary-soft);
  border-radius: var(--radius-xs);
  font-weight: 500;
}
.feature-list li i {
  color: var(--success);
  font-size: 16px;
}

/* 核心功能 */
.function-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 24px 0 28px;
}
.function-item {
  background: var(--bg-page);
  border-radius: var(--radius-md);
  padding: 24px;
  border: 1px solid transparent;
  transition: border-color .2s, box-shadow .2s;
}
.function-item:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-card);
}
.function-item i {
  font-size: 26px;
  color: var(--primary);
  margin-bottom: 14px;
  display: inline-block;
  background: var(--primary-soft);
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.function-item h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text-main);
}
.function-item span {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* 版本选型 */
.version-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr 1fr;
  gap: 20px;
  margin: 28px 0;
}
.version-card {
  background: var(--bg-page);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  border: 1px solid var(--border);
  transition: transform .2s, box-shadow .2s;
}
.version-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.version-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-main);
}
.version-card p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 16px;
}
.version-card ul li {
  font-size: 14px;
  color: var(--text-secondary);
  padding: 5px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}
.version-card ul li::before {
  content: '✓';
  color: var(--success);
  font-weight: 700;
  flex-shrink: 0;
}
.version-card.featured {
  background: var(--deep);
  border-color: var(--deep);
  position: relative;
  overflow: hidden;
}
.version-card.featured::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--accent);
}
.version-card.featured h3 { color: #fff; }
.version-card.featured p { color: rgba(255,255,255,0.75); }
.version-card.featured ul li { color: rgba(255,255,255,0.85); }

/* 部署方式 */
.deploy-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin: 24px 0 28px;
}
.deploy-item {
  display: flex;
  gap: 20px;
  padding: 24px;
  background: var(--primary-soft);
  border-radius: var(--radius-md);
  align-items: flex-start;
}
.deploy-item i {
  font-size: 24px;
  color: var(--primary);
  background: var(--bg-card);
  width: 52px;
  height: 52px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(21,35,56,0.06);
}
.deploy-item h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 6px;
}
.deploy-item p {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0;
}

/* 配套服务 */
.service-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 24px 0 28px;
}
.service-row {
  display: flex;
  gap: 16px;
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-card);
  transition: border-color .2s, box-shadow .2s;
}
.service-row:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-card);
}
.service-row i {
  font-size: 22px;
  color: var(--accent);
  background: var(--accent-soft);
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.service-row h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
}
.service-row p {
  font-size: 13px;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.5;
}

/* FAQ */
.accordion {
  margin: 24px 0 28px;
  border-radius: var(--radius-md);
}
.accordion-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  background: var(--bg-card);
  transition: box-shadow .2s;
}
.accordion-item:hover { box-shadow: var(--shadow-card); }
.accordion-title {
  font-size: 17px !important;
  font-weight: 600 !important;
  color: var(--text-main) !important;
  padding: 18px 22px !important;
  background: var(--bg-card) !important;
  border: none !important;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  line-height: 1.4 !important;
}
.accordion-title::after {
  content: '+';
  font-size: 22px;
  font-weight: 400;
  color: var(--primary);
  margin-left: 16px;
  flex-shrink: 0;
  transition: transform .2s;
}
.accordion-item.is-active .accordion-title::after {
  transform: rotate(45deg);
}
.accordion-content {
  padding: 0 22px 20px !important;
  font-size: 14px !important;
  color: var(--text-secondary) !important;
  line-height: 1.7 !important;
  border: none !important;
  background: var(--bg-card) !important;
}

/* 底部CTA */
.bottom-cta {
  padding: 0 0 80px;
}
.cta-banner {
  background: var(--deep);
  border-radius: var(--radius-lg);
  padding: 48px 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  right: -60px;
  top: -60px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(37,99,217,0.25);
}
.cta-banner::after {
  content: '';
  position: absolute;
  right: 40px;
  bottom: -80px;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: rgba(37,99,217,0.15);
}
.cta-left { position: relative; z-index: 2; }
.cta-left h2 {
  font-size: 28px;
  color: #fff;
  font-weight: 700;
  margin-bottom: 8px;
}
.cta-left p {
  font-size: 15px;
  color: rgba(255,255,255,0.7);
  margin: 0;
}
.cta-right { position: relative; z-index: 2; flex-shrink: 0; }

/* ===== 页脚 ===== */
.site-footer {
  background: #10213A;
  color: rgba(255,255,255,0.65);
  padding: 64px 0 0;
  margin-top: 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
}
.footer-brand {
  font-size: 24px;
  font-weight: 800;
  color: #fff;
  display: flex;
  align-items: baseline;
  gap: 4px;
}
.footer-brand span { color: var(--accent); }
.footer-brand small {
  font-size: 12px;
  font-weight: 400;
  color: rgba(255,255,255,0.4);
  margin-left: 8px;
}
.footer-desc {
  font-size: 14px;
  color: rgba(255,255,255,0.5);
  margin-top: 16px;
  line-height: 1.7;
  max-width: 280px;
}
.footer-col h4 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul li a {
  color: rgba(255,255,255,0.55);
  font-size: 14px;
  transition: color .2s, padding-left .2s;
}
.footer-col ul li a:hover {
  color: #fff;
  padding-left: 4px;
}
.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: rgba(255,255,255,0.55);
  padding: 4px 0;
}
.footer-contact li i {
  color: var(--accent);
  font-size: 15px;
  width: 20px;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 20px 0;
  text-align: center;
}
.footer-bottom p {
  font-size: 13px;
  color: rgba(255,255,255,0.35);
  margin: 0;
}

/* 模态弹层 */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(20,25,35,0.5);
  z-index: 10000;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal-overlay.open { display: flex; }
.modal-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 40px;
  max-width: 520px;
  width: 100%;
  position: relative;
  box-shadow: 0 30px 60px rgba(0,0,0,0.2);
}
.modal-close {
  position: absolute;
  right: 16px;
  top: 16px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: none;
  background: var(--bg-page);
  font-size: 18px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: background .2s;
}
.modal-close:hover { background: var(--primary-soft); color: var(--primary); }
.modal-card h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
}
.modal-card p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}
.form-group {
  margin-bottom: 18px;
}
.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-main);
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid #D3DEEB;
  border-radius: var(--radius-xs);
  font-size: 15px;
  font-family: var(--font-family);
  transition: border-color .2s, box-shadow .2s;
  background: var(--bg-card);
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,217,0.12);
  outline: none;
}
.form-group textarea { min-height: 88px; resize: vertical; }
.form-privacy {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 14px;
  margin-bottom: 16px;
}
.form-privacy i { font-size: 14px; }
.modal-card .btn-accent { width: 100%; }

/* 响应式 */
@media screen and (max-width: 980px) {
  .header-inner {
    height: 60px;
    border-radius: var(--radius-md);
  }
  .nav-links {
    display: none;
    position: absolute;
    top: 80px;
    left: 20px;
    right: 20px;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-hover);
    padding: 16px;
    flex-direction: column;
    align-items: stretch;
    border: 1px solid var(--border);
  }
  .nav-links.open { display: flex; }
  .nav-link {
    padding: 14px 16px;
    font-size: 16px;
    border-radius: var(--radius-xs);
    justify-content: flex-start;
  }
  .nav-link i { font-size: 18px; width: 24px; text-align: center; }
  .nav-toggle { display: block; }
  .header-cta { display: none; }
  .category-hero { min-height: 200px; }
  .hero-category-title h1 { font-size: 30px; }
  .hero-badge { width: 64px; height: 64px; font-size: 26px; }
  .toc-side { position: static; margin-bottom: 24px; }
  .toc-card h3 { font-size: 16px; }
  .section-block { padding: 28px; }
  .section-block h2 { font-size: 24px; }
  .version-grid { grid-template-columns: 1fr; gap: 16px; }
  .deploy-grid { grid-template-columns: 1fr; }
  .service-list { grid-template-columns: 1fr; }
  .function-grid { grid-template-columns: 1fr; }
  .feature-list { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .cta-banner { flex-direction: column; text-align: center; padding: 36px 28px; }
  .cta-right .btn-accent { width: 100%; }
}

@media screen and (max-width: 640px) {
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .brand { font-size: 22px; }
  .brand small { display: none; }
  .category-hero { margin-top: 12px; }
  .hero-category-title h1 { font-size: 26px; }
  .hero-desc { font-size: 13px; }
  .hero-badge { display: none; }
  .category-content { padding: 32px 0 56px; }
  .section-block { padding: 20px; }
  .section-block h2 { font-size: 20px; }
  .section-block p { font-size: 14px; }
  .version-card { padding: 20px; }
  .deploy-item { flex-direction: column; }
  .service-row { flex-direction: column; gap: 10px; }
  .cta-left h2 { font-size: 22px; }
  .cta-left p { font-size: 14px; }
  .bottom-cta { padding: 0 0 48px; }
  .cta-banner { padding: 28px 20px; gap: 20px; }
  .modal-card { padding: 28px 20px; }
}

/* roulang page: article */
:root {
  --primary: #2563D9;
  --primary-soft: #EAF2FC;
  --primary-dark: #1D4FAD;
  --accent: #F27D3E;
  --accent-soft: #FDF3EA;
  --accent-dark: #DE6A28;
  --bg-page: #F5F8FC;
  --bg-card: #FFFFFF;
  --deep: #0B2A52;
  --deep-2: #10213A;
  --text: #14263C;
  --text-secondary: #5B6B82;
  --text-muted: #8A9BB0;
  --border: #E1E9F2;
  --divider: #EDF1F7;
  --success: #1BA37C;
  --danger: #D9534F;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 10px;
  --radius-input: 8px;
  --shadow-default: 0 10px 30px rgba(21,35,56,0.06);
  --shadow-hover: 0 20px 40px rgba(21,35,56,0.12);
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-family);
  background: var(--bg-page);
  color: var(--text);
  font-size: 16px;
  line-height: 1.75;
  margin: 0;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4, h5, h6 { margin: 0 0 0.5em; line-height: 1.3; color: var(--text); }
p { margin: 0 0 1em; }
a { color: var(--primary); text-decoration: none; transition: color .2s; }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; height: auto; display: inline-block; }
ul, ol { margin: 0 0 1em; padding-left: 1.25em; }

.container, .grid-container {
  max-width: 1240px;
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
  width: 100%;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all .2s ease;
  line-height: 1.4;
  background: transparent;
}
.btn:focus {
  outline: 3px solid rgba(37,99,217,0.35);
  outline-offset: 2px;
}
.btn-accent {
  background: var(--accent);
  color: #fff;
}
.btn-accent:hover {
  background: var(--accent-dark);
  color: #fff;
  box-shadow: 0 8px 20px rgba(242,125,62,0.3);
}
.btn-outline {
  background: #fff;
  color: var(--primary);
  border: 2px solid var(--primary);
}
.btn-outline:hover {
  background: var(--primary-soft);
  color: var(--primary);
  border-color: var(--primary-dark);
}
.btn-block { width: 100%; }
.btn-sm { padding: 8px 18px; font-size: 13px; }

.site-header {
  background: var(--bg-page);
  padding: 12px 0 0;
  position: relative;
  z-index: 50;
}
.nav-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-default);
  height: 72px;
  padding: 0 24px;
  position: relative;
}
.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
  flex-shrink: 0;
  font-size: 24px;
  font-weight: 800;
  color: var(--text);
  text-decoration: none;
  line-height: 1.2;
}
.brand span { color: var(--primary); }
.brand small {
  font-size: 11px;
  font-weight: 400;
  color: var(--text-muted);
}
.nav-right {
  display: flex;
  align-items: center;
  gap: 16px;
  flex: 1;
  justify-content: center;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  border: 1px solid transparent;
  transition: background .2s, color .2s, border-color .2s;
}
.nav-link i { color: var(--text-muted); font-size: 14px; transition: color .2s; }
.nav-link:hover { background: var(--primary-soft); color: var(--primary); }
.nav-link:hover i { color: var(--primary); }
.nav-link.active {
  background: var(--primary-soft);
  color: var(--primary);
  border-left: 3px solid var(--accent);
  padding-left: 16px;
  border-radius: 10px;
}
.nav-link.active i { color: var(--primary); }
.nav-cta { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
  font-size: 18px;
  align-items: center;
  justify-content: center;
  padding: 0;
  cursor: pointer;
  transition: background .2s, color .2s;
}
.menu-toggle:hover { background: var(--primary-soft); color: var(--primary); }
.menu-toggle:focus { outline: 3px solid rgba(37,99,217,0.35); outline-offset: 2px; }

.article-page { padding: 24px 0 64px; }
.article-760 { max-width: 760px; margin: 0 auto; }

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  padding: 16px 0 20px;
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--primary); }
.bc-sep { color: var(--border); font-size: 12px; }
.bc-current { color: var(--text-secondary); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 280px; }

.article-hero-card {
  background: var(--primary-soft);
  border-radius: var(--radius-lg);
  padding: 40px 40px 36px;
  position: relative;
  margin-bottom: 24px;
}
.article-hero-card::before {
  content: "";
  display: block;
  width: 48px;
  height: 4px;
  background: var(--accent);
  border-radius: 999px;
  margin-bottom: 18px;
}
.article-hero-card h1 {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--text);
  margin-bottom: 16px;
  letter-spacing: 0;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 24px;
  font-size: 14px;
  color: var(--text-secondary);
}
.article-meta i { color: var(--primary); margin-right: 6px; font-size: 13px; }

.article-content {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-default);
  padding: 48px;
}
.article-body {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
  word-break: break-word;
}
.article-body > *:last-child { margin-bottom: 0; }
.article-body p { margin-bottom: 28px; }
.article-body h2 {
  font-size: 30px;
  font-weight: 700;
  color: var(--text);
  margin: 48px 0 16px;
  letter-spacing: 0;
}
.article-body h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  margin: 40px 0 14px;
  letter-spacing: 0;
}
.article-body ul, .article-body ol { margin-bottom: 28px; padding-left: 22px; }
.article-body li { margin-bottom: 8px; }
.article-body a { color: var(--primary); text-decoration: underline; text-underline-offset: 4px; }
.article-body img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-default);
  margin: 24px 0;
  width: 100%;
  height: auto;
  border: 1px solid var(--border);
}
.article-body blockquote {
  background: var(--accent-soft);
  border-left: 4px solid var(--accent);
  padding: 20px 24px;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  margin: 28px 0;
  font-size: 15px;
}
.article-body table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin: 28px 0;
  background: #fff;
}
.article-body table th {
  background: var(--primary-soft);
  color: var(--text);
  font-weight: 600;
  padding: 12px 16px;
  font-size: 14px;
  text-align: left;
}
.article-body table td {
  padding: 12px 16px;
  border-top: 1px solid var(--divider);
  color: var(--text-secondary);
  font-size: 14px;
}
.article-body table tr:hover td { background: #F9FBFE; }
.article-body code {
  background: #F0F4F9;
  padding: 2px 6px;
  border-radius: 6px;
  font-size: 14px;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}
.article-body pre {
  background: var(--deep);
  color: #D6E4F5;
  padding: 24px;
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin: 28px 0;
  font-size: 14px;
  line-height: 1.7;
}
.article-body pre code { background: transparent; padding: 0; color: inherit; }

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 32px;
  margin-top: 40px;
  border-top: 1px solid var(--divider);
}
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 16px;
  background: var(--primary-soft);
  color: var(--primary);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  line-height: 1.6;
}

.article-empty {
  text-align: center;
  padding: 80px 40px;
}
.article-empty > i {
  font-size: 52px;
  color: var(--text-muted);
  margin-bottom: 20px;
  display: block;
}
.article-empty h1 {
  font-size: 26px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}
.article-empty p { color: var(--text-secondary); font-size: 15px; margin-bottom: 28px; }

.related-section {
  background: var(--bg-page);
  padding: 64px 0 80px;
}
.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
}
.section-head h2 {
  font-size: 30px;
  font-weight: 700;
  margin: 0;
  letter-spacing: 0;
}
.section-more {
  font-size: 14px;
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  transition: color .2s;
}
.section-more i { font-size: 12px; }
.section-more:hover { color: var(--primary); }
.related-grid { row-gap: 24px; }
.related-grid > .cell { display: flex; margin-bottom: 24px; }
.related-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-default);
  display: flex;
  flex-direction: column;
  width: 100%;
  text-decoration: none;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary);
}
.related-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  display: block;
}
.related-card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.related-card-body h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
  line-height: 1.4;
}
.related-card-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  flex: 1;
  margin-bottom: 16px;
}
.related-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
}
.related-card:hover .related-link { color: var(--accent); }

.back-link {
  text-align: center;
  margin-top: 40px;
}

.site-footer {
  background: var(--deep-2);
  color: #B8C7D9;
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
}
.footer-brand {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  display: flex;
  align-items: baseline;
  gap: 4px;
}
.footer-brand span { color: var(--accent); }
.footer-brand small { font-size: 11px; font-weight: 400; color: #7A8BA0; }
.footer-desc {
  font-size: 14px;
  line-height: 1.8;
  color: #8A9BB0;
  margin-top: 14px;
  max-width: 300px;
}
.footer-col h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 18px;
}
.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col a {
  color: #8A9BB0;
  text-decoration: none;
  font-size: 14px;
  transition: color .2s;
}
.footer-col a:hover { color: #fff; }
.footer-contact li {
  color: #8A9BB0;
  font-size: 14px;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-contact i { color: var(--accent); font-size: 13px; width: 16px; text-align: center; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0;
  text-align: center;
  color: #5B6B82;
  font-size: 14px;
}
.footer-bottom p { margin: 0; }

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(20,25,35,0.5);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 999;
  padding: 20px;
}
.modal-overlay.open { display: flex; }
.modal-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 40px;
  max-width: 480px;
  width: 100%;
  box-shadow: 0 25px 60px rgba(0,0,0,0.2);
  position: relative;
  max-height: 90vh;
  overflow-y: auto;
}
.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-page);
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  transition: background .2s, color .2s;
}
.modal-close:hover { background: var(--primary-soft); color: var(--primary); }
.modal-close:focus { outline: 3px solid rgba(37,99,217,0.35); outline-offset: 2px; }
.modal-card h3 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}
.modal-card > p {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 20px;
}
.modal-card form { display: flex; flex-direction: column; gap: 12px; }
.modal-card input,
.modal-card textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid #D3DEEB;
  border-radius: var(--radius-input);
  background: #fff;
  font-size: 14px;
  color: var(--text);
  font-family: inherit;
  transition: border-color .2s, box-shadow .2s;
}
.modal-card input::placeholder,
.modal-card textarea::placeholder { color: #A2B1C4; }
.modal-card input:focus,
.modal-card textarea:focus {
  border-color: var(--primary);
  outline: none;
  box-shadow: 0 0 0 3px rgba(37,99,217,0.15);
}
.modal-privacy {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 14px;
}
.modal-privacy i { color: var(--success); font-size: 12px; }
.modal-success { text-align: center; padding: 24px 0; }
.modal-success i { font-size: 48px; color: var(--success); margin-bottom: 12px; }
.modal-success p { color: var(--text-secondary); font-size: 15px; margin: 0; }

@media (max-width: 1023px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .related-grid > .cell { margin-bottom: 24px; }
  .related-grid > .cell:last-child { margin-bottom: 0; }
}

@media (max-width: 979px) {
  .nav-panel { height: 60px; padding: 0 16px; }
  .nav-right { display: none; }
  .menu-toggle { display: inline-flex; }
  .nav-panel.mobile-open .nav-right {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 68px;
    left: 16px;
    right: 16px;
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-hover);
    border: 1px solid var(--border);
    padding: 16px;
    gap: 12px;
    z-index: 100;
  }
  .nav-panel.mobile-open .nav-links {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    width: 100%;
  }
  .nav-panel.mobile-open .nav-link {
    width: 100%;
    justify-content: flex-start;
    padding: 12px 16px;
    font-size: 15px;
  }
  .nav-panel.mobile-open .nav-link.active { padding-left: 16px; }
  .nav-panel.mobile-open .nav-cta {
    flex-direction: column;
    width: 100%;
    gap: 10px;
    border-top: 1px solid var(--divider);
    padding-top: 14px;
  }
  .nav-panel.mobile-open .nav-cta .btn { width: 100%; }
  .article-hero-card { padding: 32px 28px; }
  .article-hero-card h1 { font-size: 30px; }
  .article-content { padding: 36px 28px; }
}

@media (max-width: 767px) {
  .article-hero-card h1 { font-size: 26px; }
  .article-hero-card { padding: 28px 20px; }
  .article-content { padding: 28px 20px; }
  .article-meta { gap: 10px 16px; font-size: 13px; }
  .section-head h2 { font-size: 24px; }
  .related-grid > .cell { margin-bottom: 16px; }
  .related-card img { height: 160px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .article-760 { padding: 0; }
  .modal-card { padding: 32px 20px; }
}

@media (max-width: 520px) {
  .container, .grid-container { padding-left: 16px; padding-right: 16px; }
  .brand { font-size: 20px; }
  .brand small { display: none; }
  .breadcrumb .bc-current { max-width: 160px; }
  .related-grid { margin-left: -8px; margin-right: -8px; }
  .related-grid > .cell { padding-left: 8px; padding-right: 8px; }
  .footer-bottom { font-size: 12px; }
}

/* roulang page: category2 */
:root {
  --primary: #2563D9;
  --primary-soft: #EAF2FC;
  --accent: #F27D3E;
  --accent-soft: #FDF3EA;
  --bg-page: #F5F8FC;
  --bg-card: #FFFFFF;
  --deep: #0B2A52;
  --text-main: #14263C;
  --text-muted: #5B6B82;
  --text-weak: #8A9BB0;
  --border-color: #E1E9F2;
  --divider: #EDF1F7;
  --success: #1BA37C;
  --error: #D9534F;
  --shadow-sm: 0 10px 30px rgba(21,35,56,0.06);
  --shadow-md: 0 20px 40px rgba(21,35,56,0.12);
  --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-stack);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-main);
  background: var(--bg-page);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: color .2s, opacity .2s; }
a:hover { opacity: .85; }
button { font-family: inherit; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4 { margin: 0 0 16px; line-height: 1.35; font-weight: 700; color: var(--text-main); }
p { margin: 0 0 16px; }
.container { max-width: 1240px; margin: 0 auto; padding: 0 20px; }

.btn-primary, .btn-accent, .btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all .2s ease;
  text-decoration: none;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: #1D4ED8; color: #fff; opacity: 1; }
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { background: #E06A24; color: #fff; opacity: 1; }
.btn-outline { background: #fff; border-color: var(--primary); color: var(--primary); }
.btn-outline:hover { background: var(--primary-soft); color: var(--primary); opacity: 1; }
.btn-primary:focus, .btn-accent:focus, .btn-outline:focus {
  outline: 3px solid rgba(37,99,217,0.35);
  outline-offset: 2px;
}
.btn-sm { padding: 9px 16px; font-size: 14px; border-radius: 8px; }
.btn-lg { padding: 14px 36px; font-size: 16px; }
.btn-block { width: 100%; }

.site-header {
  position: sticky;
  top: 12px;
  z-index: 100;
  padding: 0 20px;
}
.header-card {
  max-width: 1240px;
  margin: 0 auto;
  background: var(--bg-card);
  border-radius: var(--radius-lg, 16px);
  height: 72px;
  display: flex;
  align-items: center;
  padding: 0 24px;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(225,233,242,0.6);
}
.brand {
  font-size: 22px;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 100px;
  flex-shrink: 0;
}
.brand span { color: var(--primary); }
.brand small { font-size: 8px; color: var(--text-weak); font-weight: 400; letter-spacing: .06em; display: block; margin-top: 2px; }
.nav-links { display: flex; align-items: center; gap: 8px; margin-left: 32px; flex-wrap: wrap; }
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-muted);
  transition: all .2s;
  text-decoration: none;
  white-space: nowrap;
}
.nav-link i { font-size: 16px; }
.nav-link:hover { background: var(--primary-soft); color: var(--primary); opacity: 1; }
.nav-link.active {
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 600;
  box-shadow: inset 3px 0 0 0 var(--accent);
}
.nav-cta { margin-left: auto; display: flex; gap: 12px; flex-shrink: 0; }
.nav-toggle {
  display: none;
  margin-left: auto;
  width: 40px;
  height: 40px;
  border: none;
  border-radius: 10px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 16px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}
.nav-mobile {
  display: none;
  background: #fff;
  border-radius: 16px;
  margin: 8px 20px 0;
  padding: 16px;
  box-shadow: var(--shadow-md);
  flex-direction: column;
  gap: 4px;
}
.nav-mobile.is-open { display: flex; }
.nav-mobile .nav-link { width: 100%; padding: 12px; }
.nav-mobile-cta { display: flex; flex-direction: column; gap: 10px; margin-top: 12px; }

.hero-slim {
  position: relative;
  min-height: 240px;
  display: flex;
  align-items: center;
  background-size: cover;
  background-position: center;
  padding: 48px 0 40px;
  margin-top: 20px;
  border-radius: 20px;
  overflow: hidden;
}
.hero-slim::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(245,248,252,0.62);
}
.hero-slim .container { position: relative; z-index: 2; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 12px;
}
.hero-slim h1 { font-size: 38px; font-weight: 800; line-height: 1.3; margin-bottom: 8px; color: var(--text-main); }
.hero-slim p { font-size: 15px; color: var(--text-muted); margin: 0; max-width: 620px; }
.hero-emblem { text-align: center; }
.emblem-circle {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background: var(--primary-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
  color: var(--primary);
  box-shadow: var(--shadow-sm);
  margin: 0 auto;
}

.section { padding: 96px 0; }
.section-top { padding-top: 56px; }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 48px; }
.section-head h2 { font-size: 32px; font-weight: 700; margin-bottom: 8px; }
.section-head p { font-size: 15px; color: var(--text-muted); margin: 0; }

.feature-card {
  background: var(--bg-card);
  border-radius: 16px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.feature-card > img { width: 100%; height: 360px; object-fit: cover; display: block; }
.feature-body { padding: 40px; }
.feature-body h2 { font-size: 28px; font-weight: 700; margin-bottom: 16px; }
.feature-body > p { font-size: 16px; color: var(--text-muted); max-width: 860px; line-height: 1.8; }
.feature-points { display: flex; flex-wrap: wrap; gap: 12px 24px; margin-top: 24px; }
.feature-points li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-main);
  background: var(--primary-soft);
  padding: 8px 16px;
  border-radius: 999px;
}
.feature-points li i { color: var(--success); font-size: 14px; }

.split-block { margin-bottom: 64px; }
.split-block:last-child { margin-bottom: 0; }
.split-media {
  background: #fff;
  border-radius: 16px;
  border: 1px solid var(--border-color);
  padding: 12px;
  box-shadow: var(--shadow-sm);
}
.split-media img {
  width: 100%;
  border-radius: 12px;
  object-fit: cover;
  height: 320px;
}
.split-content { padding: 20px 8px 20px 24px; }
.split-index {
  font-size: 13px;
  font-weight: 700;
  color: var(--primary);
  background: var(--primary-soft);
  padding: 4px 12px;
  border-radius: 999px;
  display: inline-block;
  margin-bottom: 14px;
}
.split-content h3 { font-size: 24px; font-weight: 700; margin-bottom: 12px; }
.split-content > p { font-size: 15px; color: var(--text-muted); margin-bottom: 16px; line-height: 1.8; }
.split-content ul { margin-bottom: 20px; }
.split-content ul li {
  position: relative;
  padding-left: 24px;
  font-size: 14px;
  color: var(--text-main);
  margin-bottom: 8px;
  line-height: 1.7;
}
.split-content ul li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 9px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
}
.split-content .btn-outline { padding: 10px 20px; font-size: 14px; }

.process-section {
  background: var(--bg-card);
  border-top: 1px solid var(--divider);
  border-bottom: 1px solid var(--divider);
}
.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 28px 24px;
  box-shadow: var(--shadow-sm);
  height: 100%;
  transition: box-shadow .2s, transform .2s;
}
.step-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.step-num {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 18px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}
.step-accent .step-num { background: var(--accent-soft); color: var(--accent); }
.step-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.step-card p { font-size: 14px; color: var(--text-muted); margin: 0; line-height: 1.7; }

.faq-section { background: var(--bg-card); border-top: 1px solid var(--divider); }
.accordion-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  margin-bottom: 16px;
  box-shadow: 0 4px 12px rgba(21,35,56,0.03);
  overflow: hidden;
  transition: border-color .2s, box-shadow .2s;
}
.accordion-item.is-open { border-color: var(--primary); box-shadow: 0 8px 20px rgba(37,99,217,0.08); }
.accordion-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  background: none;
  border: none;
  font-size: 17px;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  text-align: left;
  transition: background .2s;
}
.accordion-btn:hover { background: var(--bg-page); }
.accordion-btn i {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--primary-soft);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  transition: transform .3s, background .3s, color .3s;
}
.accordion-item.is-open .accordion-btn i { transform: rotate(45deg); background: var(--accent-soft); color: var(--accent); }
.accordion-btn:focus { outline: 3px solid rgba(37,99,217,0.25); outline-offset: -2px; }
.accordion-body { max-height: 0; overflow: hidden; transition: max-height .35s ease; padding: 0 24px; }
.accordion-item.is-open .accordion-body { max-height: 400px; padding-bottom: 4px; }
.accordion-body p { font-size: 14px; color: var(--text-muted); padding-bottom: 20px; margin: 0; line-height: 1.8; }

.cta-section { padding-top: 0; }
.cta-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  background: var(--primary);
  min-height: 160px;
}
.cta-left { padding: 40px 48px; flex: 1; }
.cta-left h2 { font-size: 28px; color: #fff; margin-bottom: 8px; }
.cta-left p { color: rgba(255,255,255,0.85); margin: 0; font-size: 15px; }
.cta-right { background: var(--deep); padding: 40px 48px; display: flex; align-items: center; justify-content: center; }

.site-footer {
  background: #10213A;
  color: #B7C5D6;
  padding: 64px 0 0;
  margin-top: 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand { font-size: 22px; font-weight: 800; color: #fff; display: flex; align-items: baseline; gap: 2px; }
.footer-brand span { color: var(--accent); }
.footer-brand small { font-size: 10px; color: #7E91A8; font-weight: 400; margin-left: 6px; }
.footer-desc { font-size: 14px; color: #8EA3B8; margin-top: 12px; max-width: 320px; line-height: 1.7; }
.footer-col h4 { font-size: 15px; font-weight: 600; color: #fff; margin-bottom: 16px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a { color: #8EA3B8; font-size: 14px; transition: color .2s; }
.footer-col ul a:hover { color: #fff; opacity: 1; }
.footer-contact li { font-size: 14px; color: #8EA3B8; display: flex; align-items: center; gap: 8px; }
.footer-contact i { color: var(--primary); width: 16px; margin-top: 2px; }
.footer-bottom { padding: 20px 0; text-align: center; }
.footer-bottom p { font-size: 13px; color: #6C8098; margin: 0; }

.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(20,25,35,0.5);
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal-overlay.is-open { display: flex; }
.modal-card {
  background: #fff;
  border-radius: 16px;
  max-width: 520px;
  width: 100%;
  padding: 40px;
  position: relative;
  box-shadow: 0 24px 80px rgba(21,35,56,0.2);
  max-height: 90vh;
  overflow-y: auto;
}
.modal-card h3 { font-size: 24px; font-weight: 700; margin-bottom: 8px; }
.modal-card > p { font-size: 14px; color: var(--text-muted); margin-bottom: 24px; line-height: 1.6; }
.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: none;
  background: var(--divider);
  color: var(--text-muted);
  font-size: 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .2s, color .2s;
}
.modal-close:hover { background: var(--accent-soft); color: var(--accent); }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 14px; font-weight: 600; color: var(--text-main); margin-bottom: 8px; }
.form-group input, .form-group textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid #D3DEEB;
  border-radius: 8px;
  font-size: 15px;
  font-family: inherit;
  color: var(--text-main);
  background: #fff;
  transition: border-color .2s, box-shadow .2s;
}
.form-group input:focus, .form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,217,0.12);
  outline: none;
}
.form-group textarea { resize: vertical; min-height: 100px; }
.privacy-note { display: flex; align-items: center; justify-content: center; gap: 6px; font-size: 13px; color: var(--text-weak); margin-top: 16px; }
.privacy-note i { font-size: 12px; }

@media (max-width: 980px) {
  .header-card { height: 60px; padding: 0 16px; }
  .nav-links, .nav-cta { display: none; }
  .nav-toggle { display: flex; }
  .nav-mobile { display: none; }
  .nav-mobile.is-open { display: flex; }
  .hero-slim { min-height: 200px; padding: 36px 0; margin-top: 16px; }
  .hero-slim h1 { font-size: 30px; }
  .hero-emblem { display: none; }
  .feature-card > img { height: 260px; }
  .feature-body { padding: 28px 24px; }
  .split-content { padding: 16px 0; }
  .split-media { margin-bottom: 16px; }
  .split-media img { height: 240px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .process-section .cell { margin-bottom: 20px; }
  .cta-band { flex-direction: column; }
  .cta-left, .cta-right { padding: 28px 24px; width: 100%; text-align: center; }
  .cta-right { justify-content: center; }
  .section { padding: 80px 0; }
  .section-head h2 { font-size: 28px; }
}

@media (max-width: 640px) {
  .section { padding: 64px 0; }
  .section-top { padding-top: 32px; }
  .hero-slim h1 { font-size: 26px; }
  .hero-slim p { font-size: 14px; }
  .feature-body h2 { font-size: 24px; }
  .feature-body > p { font-size: 15px; }
  .feature-points { gap: 10px; }
  .feature-points li { padding: 8px 12px; font-size: 13px; }
  .split-media img { height: 200px; }
  .split-content h3 { font-size: 20px; }
  .split-content { padding: 16px 0; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .step-card { padding: 20px 16px; }
  .accordion-btn { padding: 16px; font-size: 16px; }
  .accordion-body { padding: 0 16px; }
  .modal-card { padding: 28px 20px; }
  .cta-left h2 { font-size: 24px; }
}