/* roulang page: index */
:root {
  --c-primary: #1765B8;
  --c-primary-dark: #14579E;
  --c-teal: #0FA3A0;
  --c-bg: #F5F8FC;
  --c-card: #FFFFFF;
  --c-text: #122B3F;
  --c-body: #35536B;
  --c-muted: #7790A4;
  --c-border: #DCE7F2;
  --c-border-light: #E2EBF3;
  --c-bg-soft: #EAF2F9;
  --c-orange: #E67E22;
  --c-orange-dark: #CF6C14;
  --radius-lg: 16px;
  --radius-sm: 10px;
  --radius-pill: 999px;
  --shadow: 0 6px 20px rgba(23, 101, 184, 0.08);
  --shadow-hover: 0 12px 30px rgba(23, 101, 184, 0.13);
  --font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei UI", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.8;
  color: var(--c-body);
  background: var(--c-bg);
  text-align: left;
}

ul,
ol {
  list-style: none;
}

a {
  color: var(--c-primary);
  text-decoration: none;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

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

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

button,
input,
select,
textarea {
  font-family: inherit;
  font-size: 100%;
}

input:focus,
textarea:focus,
select:focus,
button:focus,
a:focus {
  outline: 3px solid rgba(15, 163, 160, 0.35);
  outline-offset: 2px;
}

.site-header {
  position: relative;
  z-index: 120;
  background: var(--c-card);
  border-bottom: 1px solid var(--c-border-light);
  box-shadow: 0 2px 10px rgba(19, 53, 82, 0.04);
}

.site-header .grid-container {
  max-width: 1200px;
}

.site-header-inner {
  display: flex;
  align-items: center;
  min-height: 72px;
  height: 72px;
  position: relative;
}

.brand {
  display: flex;
  align-items: center;
  flex: 0 0 auto;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: var(--c-primary);
  color: #fff;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.4px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(23, 101, 184, 0.25);
}

.brand-text {
  font-size: 20px;
  font-weight: 800;
  color: var(--c-text);
  white-space: nowrap;
  letter-spacing: 0.2px;
}

.brand-text small {
  display: block;
  font-size: 11px;
  font-weight: 400;
  color: var(--c-muted);
  line-height: 1.2;
  letter-spacing: 1px;
}

.nav-toggle-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  margin-left: auto;
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  background: var(--c-card);
  color: var(--c-primary);
  font-size: 18px;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
}

.nav-toggle-btn:hover {
  background: var(--c-bg-soft);
  border-color: var(--c-primary);
}

.site-nav {
  position: absolute;
  top: 72px;
  left: 0;
  right: 0;
  display: none;
  background: var(--c-card);
  border-bottom: 1px solid var(--c-border-light);
  box-shadow: 0 16px 36px rgba(19, 53, 82, 0.12);
  padding: 12px 16px 20px;
  max-height: calc(100vh - 72px);
  overflow-y: auto;
}

.site-nav.is-open {
  display: block;
}

.site-menu li a {
  display: flex;
  align-items: center;
  min-height: 48px;
  padding: 0 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--c-text);
  border-radius: 10px;
  transition: background 0.2s, color 0.2s;
}

.site-menu li a:hover {
  background: var(--c-bg-soft);
  color: var(--c-primary);
}

.site-menu li.current a {
  background: var(--c-bg-soft);
  color: var(--c-primary);
  font-weight: 700;
}

.nav-extra {
  margin-top: 10px;
  padding-top: 12px;
  border-top: 1px solid var(--c-border-light);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.search-box {
  position: relative;
  width: 100%;
}

.search-box > i {
  position: absolute;
  top: 50%;
  left: 14px;
  transform: translateY(-50%);
  color: var(--c-muted);
  font-size: 14px;
  pointer-events: none;
  z-index: 2;
}

.search-box input {
  width: 100%;
  height: 42px;
  padding: 0 14px 0 40px;
  border: 1px solid var(--c-border);
  border-radius: var(--radius-pill);
  background: #F7FAFD;
  font-size: 14px;
  color: var(--c-text);
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

.search-box input::placeholder {
  color: var(--c-muted);
}

.search-box input:focus {
  border-color: var(--c-primary);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(23, 101, 184, 0.1);
}

.nav-cta {
  width: 100%;
  min-width: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 2px solid transparent;
  border-radius: 10px;
  font-weight: 700;
  font-size: 15px;
  line-height: 1.2;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: var(--c-primary);
  border-color: var(--c-primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--c-primary-dark);
  border-color: var(--c-primary-dark);
  color: #fff;
  box-shadow: 0 10px 26px rgba(23, 101, 184, 0.22);
}

.btn-orange {
  background: var(--c-orange);
  border-color: var(--c-orange);
  color: #fff;
}

.btn-orange:hover {
  background: var(--c-orange-dark);
  border-color: var(--c-orange-dark);
  color: #fff;
  box-shadow: 0 10px 24px rgba(230, 126, 34, 0.22);
}

.btn-ghost {
  background: transparent;
  border-color: var(--c-primary);
  color: var(--c-primary);
}

.btn-ghost:hover {
  background: #F0F6FC;
  color: var(--c-primary-dark);
}

.btn-lg {
  height: 54px;
  padding: 0 28px;
  font-size: 16px;
  border-radius: 12px;
}

.btn-sm {
  height: 40px;
  padding: 0 18px;
  font-size: 14px;
  border-radius: 10px;
}

.btn-block {
  width: 100%;
}

.hero-section {
  position: relative;
  background: linear-gradient(180deg, #FFFFFF 0%, #EAF2F9 100%);
  padding: clamp(3.5rem, 7vw, 6.5rem) 0;
  overflow: hidden;
}

.hero-inner {
  display: flex;
  align-items: center;
}

.hero-badge {
  margin-bottom: 20px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  background: var(--c-bg-soft);
  color: var(--c-primary);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.4;
}

.badge i {
  color: var(--c-teal);
}

.hero-title {
  font-size: clamp(30px, 4vw, 46px);
  font-weight: 800;
  line-height: 1.35;
  color: var(--c-text);
  max-width: 620px;
  margin-bottom: 18px;
  letter-spacing: 0.5px;
}

.hero-lead {
  font-size: 16px;
  line-height: 1.9;
  color: var(--c-body);
  max-width: 560px;
  margin-bottom: 28px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 20px;
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin-top: 6px;
  font-size: 14px;
  color: var(--c-muted);
}

.hero-points span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.hero-points i {
  color: var(--c-teal);
}

.hero-visual {
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: 22px;
  padding: 10px;
  box-shadow: var(--shadow-hover);
  position: relative;
}

.hero-visual::after {
  content: "";
  position: absolute;
  inset: auto 20px -12px 20px;
  height: 24px;
  background: rgba(23, 101, 184, 0.12);
  border-radius: 50%;
  filter: blur(12px);
  z-index: -1;
}

.hero-visual img {
  width: 100%;
  border-radius: 14px;
  object-fit: cover;
}

.section {
  padding: clamp(4rem, 8vw, 7rem) 0;
}

.section-white {
  background: var(--c-card);
}

.section-soft {
  background: var(--c-bg);
}

.section-head {
  max-width: 860px;
  margin: 0 auto 44px;
  text-align: center;
}

.section-head .eyebrow {
  font-size: 14px;
  font-weight: 700;
  color: var(--c-teal);
  letter-spacing: 3px;
  margin-bottom: 6px;
  text-transform: uppercase;
}

.section-head h2 {
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 800;
  line-height: 1.45;
  color: var(--c-text);
  margin-bottom: 10px;
}

.section-head .section-desc {
  color: var(--c-muted);
  font-size: 16px;
  line-height: 1.8;
}

.feature-panel {
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 20px;
  transition: box-shadow 0.3s ease;
}

.feature-panel:hover {
  box-shadow: var(--shadow-hover);
}

.orbit-slide img {
  width: 100%;
  border-radius: 10px;
  object-fit: cover;
}

.orbit-bullets {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 16px;
}

.orbit-bullets button {
  width: 8px;
  height: 8px;
  min-width: 8px;
  min-height: 8px;
  padding: 0;
  border-radius: 999px;
  background: #C7D6E4;
  border: 0;
  cursor: pointer;
  transition: width 0.3s ease, background 0.3s ease, opacity 0.2s;
}

.orbit-bullets button:hover,
.orbit-bullets button.is-active {
  background: var(--c-primary);
  width: 24px;
}

.feature-guide {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin: 0;
}

.feature-guide li {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 18px 4px;
  border-bottom: 1px solid var(--c-border-light);
}

.feature-guide li:last-child {
  border-bottom: 0;
}

.feature-guide .point-icon {
  flex: 0 0 auto;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--c-bg-soft);
  color: var(--c-primary);
  font-weight: 800;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.feature-guide .point-icon i {
  color: var(--c-teal);
}

.feature-guide strong {
  display: block;
  color: var(--c-text);
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 2px;
}

.feature-guide p {
  color: var(--c-muted);
  font-size: 14px;
  line-height: 1.65;
  margin-bottom: 0;
}

.req-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.req-card {
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.req-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.req-card-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--c-border-light);
}

.req-card-header .req-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: var(--c-bg-soft);
  color: var(--c-primary);
  font-size: 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.req-card-header h3 {
  font-size: 18px;
  font-weight: 800;
  color: var(--c-text);
  margin-bottom: 2px;
}

.req-card-header p {
  color: var(--c-muted);
  font-size: 14px;
  margin-bottom: 0;
}

.req-list {
  margin: 0;
}

.req-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 12px 0;
}

.req-list li + li {
  border-top: 1px solid var(--c-border-light);
}

.req-key {
  flex: 0 0 82px;
  font-weight: 700;
  color: var(--c-text);
  font-size: 14px;
}

.req-value {
  color: var(--c-body);
  font-size: 15px;
  line-height: 1.75;
}

.review-mosaic {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 24px;
  align-items: start;
}

.review-card {
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 26px;
  box-shadow: var(--shadow);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.review-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.review-card + .review-card,
.review-side .review-card + .review-card {
  margin-top: 24px;
}

.review-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 12px;
}

.review-avatar {
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--c-primary);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
}

.review-header .review-name {
  color: var(--c-text);
  font-weight: 700;
  font-size: 15px;
  line-height: 1.4;
}

.review-header .review-label {
  color: var(--c-muted);
  font-size: 13px;
  line-height: 1.4;
}

.review-stars {
  margin-left: auto;
  color: #F5A623;
  font-size: 13px;
  letter-spacing: 2px;
  display: inline-flex;
}

.review-card p {
  color: var(--c-body);
  line-height: 1.85;
  margin-bottom: 0;
  font-size: 15px;
}

.download-box {
  max-width: 920px;
  margin: 0 auto;
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: 24px;
  box-shadow: var(--shadow);
  padding: clamp(28px, 5vw, 56px);
}

.download-box .section-head {
  margin-bottom: 30px;
}

.download-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
  margin-bottom: 20px;
}

.download-tip {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--c-muted);
  font-size: 13px;
}

.download-tip i {
  color: var(--c-teal);
}

.news-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 28px;
  align-items: start;
}

.news-panel {
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 8px 30px;
  box-shadow: var(--shadow);
}

.news-item {
  padding: 22px 0;
  border-bottom: 1px solid var(--c-border-light);
}

.news-item:last-child {
  border-bottom: 0;
}

.news-topline {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.news-badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--c-bg-soft);
  color: var(--c-primary);
  font-size: 13px;
  font-weight: 600;
}

.news-item h3 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 6px;
}

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

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

.news-item p {
  color: var(--c-muted);
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  color: var(--c-muted);
  font-size: 13px;
  gap: 6px;
}

.news-meta i {
  margin-right: 4px;
}

.news-meta time {
  color: var(--c-muted);
}

.channel-card {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: 14px;
  padding: 16px 18px;
  margin-bottom: 12px;
  box-shadow: 0 4px 12px rgba(23, 101, 184, 0.05);
  transition: box-shadow 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
}

.channel-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
  border-color: #C6D8EA;
}

.channel-icon {
  flex: 0 0 auto;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--c-bg-soft);
  color: var(--c-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}

.channel-info {
  min-width: 0;
}

.channel-info strong {
  display: block;
  color: var(--c-text);
  font-size: 15px;
  font-weight: 700;
}

.channel-info span {
  display: block;
  color: var(--c-muted);
  font-size: 13px;
  line-height: 1.5;
}

.channel-card .fa-arrow-right {
  margin-left: auto;
  color: var(--c-muted);
  font-size: 13px;
  transition: transform 0.2s, color 0.2s;
}

.channel-card:hover .fa-arrow-right {
  color: var(--c-primary);
  transform: translateX(4px);
}

.help-mini-card {
  background: var(--c-bg-soft);
  border: 1px solid #CFE0EE;
  border-radius: 14px;
  padding: 18px;
  margin-top: 14px;
  text-align: center;
}

.help-mini-card h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--c-text);
  margin-bottom: 4px;
}

.help-mini-card p {
  font-size: 13px;
  color: var(--c-muted);
  margin-bottom: 12px;
}

.empty-state {
  padding: 46px 16px;
  text-align: center;
  color: var(--c-muted);
  font-size: 15px;
  background: #FBFCFE;
  border-radius: var(--radius-sm);
  border: 1px dashed var(--c-border);
}

.faq-grid {
  max-width: 940px;
  margin: 0 auto;
}

.accordion {
  background: transparent;
}

.accordion-item {
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: 14px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: box-shadow 0.2s ease;
}

.accordion-item:hover {
  box-shadow: var(--shadow);
}

.accordion-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px 18px 24px;
  font-size: 16px;
  font-weight: 700;
  color: var(--c-text);
  background: var(--c-card);
  line-height: 1.5;
  border-left: 4px solid transparent;
  transition: border-color 0.2s, color 0.2s;
  position: relative;
}

.accordion-title::after {
  content: "+";
  font-size: 24px;
  font-weight: 300;
  color: var(--c-primary);
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: var(--c-bg-soft);
  flex: 0 0 auto;
  transition: transform 0.2s, background 0.2s;
}

.accordion-item.is-active > .accordion-title {
  border-left-color: var(--c-primary);
  color: var(--c-primary);
}

.accordion-item.is-active > .accordion-title::after {
  content: "−";
  background: var(--c-primary);
  color: #fff;
}

.accordion-content {
  padding: 0 24px 18px;
  color: var(--c-body);
  font-size: 15px;
  line-height: 1.85;
  background: var(--c-card);
}

.accordion-content p {
  margin-bottom: 0;
}

.cta-wrap {
  padding: clamp(3.5rem, 7vw, 6rem) 0;
  background: var(--c-bg);
}

.cta-card {
  max-width: 860px;
  margin: 0 auto;
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: 24px;
  padding: clamp(32px, 6vw, 64px);
  text-align: center;
  box-shadow: var(--shadow);
}

.cta-card h2 {
  color: var(--c-text);
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 800;
  line-height: 1.5;
  margin-bottom: 10px;
}

.cta-card p {
  color: var(--c-muted);
  max-width: 560px;
  margin: 0 auto 24px;
  font-size: 15px;
  line-height: 1.85;
}

.cta-card .btn {
  min-width: 190px;
}

.site-footer {
  background: var(--c-card);
  border-top: 1px solid var(--c-border-light);
  padding: 48px 0 0;
}

.footer-cols {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 36px;
  padding-bottom: 36px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  font-size: 19px;
  font-weight: 800;
  color: var(--c-text);
}

.footer-desc {
  color: var(--c-muted);
  font-size: 14px;
  line-height: 1.85;
  max-width: 320px;
  margin-bottom: 0;
}

.footer-title {
  font-size: 15px;
  color: var(--c-text);
  font-weight: 700;
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--c-border-light);
}

.footer-links a {
  display: block;
  color: var(--c-body);
  font-size: 14px;
  line-height: 2.2;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--c-primary);
}

.footer-info-text {
  font-size: 14px;
  color: var(--c-body);
  line-height: 2;
}

.footer-bottom {
  border-top: 1px solid var(--c-border-light);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--c-muted);
}

.footer-bottom a {
  color: var(--c-muted);
}

.footer-bottom a:hover {
  color: var(--c-primary);
}

.text-muted {
  color: var(--c-muted);
}

@media (min-width: 64em) {
  .nav-toggle-btn {
    display: none;
  }

  .site-nav {
    position: static;
    top: auto;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    background: transparent;
    border: 0;
    box-shadow: none;
    padding: 0;
    max-height: none;
    overflow: visible;
    margin-left: auto;
    gap: 18px;
    width: auto;
    flex: 1;
  }

  .site-menu {
    display: flex;
    align-items: center;
    gap: 2px;
  }

  .site-menu li a {
    display: block;
    min-height: 72px;
    padding: 0 16px;
    background: transparent;
    border-radius: 0;
    color: var(--c-text);
    position: relative;
    line-height: 72px;
  }

  .site-menu li a:hover {
    background: transparent;
    color: var(--c-primary);
  }

  .site-menu li.current a {
    background: transparent;
    color: var(--c-primary);
    font-weight: 800;
  }

  .site-menu li.current a::after {
    content: "";
    position: absolute;
    left: 12px;
    right: 12px;
    bottom: 0;
    height: 3px;
    background: var(--c-primary);
    border-radius: 4px 4px 0 0;
  }

  .nav-extra {
    margin-top: 0;
    padding-top: 0;
    border-top: 0;
    flex-direction: row;
    align-items: center;
    gap: 12px;
    margin-left: auto;
  }

  .search-box {
    width: 180px;
  }
}

@media (max-width: 1023px) and (min-width: 641px) {
  .footer-cols {
    grid-template-columns: 1fr 1fr;
  }

  .review-mosaic {
    grid-template-columns: 1fr 1fr;
  }

  .review-side .review-card + .review-card {
    margin-top: 0;
  }

  .review-side {
    display: flex;
    flex-direction: column;
    gap: 20px;
  }

  .review-side .review-card {
    margin-top: 0;
  }
}

@media (max-width: 640px) {
  .hero-title {
    font-size: 26px;
    line-height: 1.45;
  }

  .hero-lead {
    font-size: 15px;
  }

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

  .req-wrap {
    grid-template-columns: 1fr;
  }

  .review-mosaic {
    grid-template-columns: 1fr;
  }

  .news-grid {
    grid-template-columns: 1fr;
  }

  .footer-cols {
    grid-template-columns: 1fr;
    gap: 26px;
  }

  .news-panel {
    padding: 8px 18px;
  }

  .download-actions .btn {
    width: 100%;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 520px) {
  .section {
    padding: 56px 0;
  }

  .hero-section {
    padding: 40px 0;
  }

  .req-card,
  .review-card {
    padding: 20px;
  }

  .req-key {
    flex-basis: 70px;
  }
}

/* roulang page: article */
:root{
  --primary:#1765B8;
  --primary-dark:#14579E;
  --primary-soft:#EAF2FA;
  --accent:#0FA3A0;
  --accent-soft:#E3F4F3;
  --orange:#E67E22;
  --orange-dark:#CF6C14;
  --page-bg:#F5F8FC;
  --white:#FFFFFF;
  --heading:#122B3F;
  --body:#35536B;
  --muted:#7790A4;
  --border:#DCE7F2;
  --border-deep:#C7D6E4;
  --shadow:0 6px 20px rgba(23,101,184,.08);
  --shadow-lift:0 12px 30px rgba(23,101,184,.13);
  --radius-lg:16px;
  --radius-md:10px;
  --radius-pill:999px;
  --spacer:clamp(3.5rem,8vw,6rem);
  --header-h:72px;
  --font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei UI","Noto Sans CJK SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-family);
  font-size:16px;
  line-height:1.8;
  color:var(--body);
  background:var(--page-bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto}
a{color:var(--primary);text-decoration:none;transition:color .25s ease}
a:hover{color:var(--primary-dark)}
ul,ol{list-style:none}
input,button,textarea,select{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:none}
.container{
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border-radius:var(--radius-md);
  font-weight:700;
  line-height:1;
  padding:13px 24px;
  transition:background .25s ease,color .25s ease,border-color .25s ease,box-shadow .25s ease,transform .25s ease;
  white-space:nowrap;
}
.btn i{font-size:14px}
.btn:focus-visible{
  outline:3px solid rgba(15,163,160,.35);
  outline-offset:2px;
}
.btn-primary{
  background:var(--primary);
  color:#fff;
  border:1px solid var(--primary);
}
.btn-primary:hover{
  background:var(--primary-dark);
  border-color:var(--primary-dark);
  color:#fff;
  transform:translateY(-2px);
  box-shadow:var(--shadow);
}
.btn-outline{
  background:transparent;
  color:var(--primary);
  border:1.5px solid var(--primary);
}
.btn-outline:hover{
  background:#F0F6FC;
  color:var(--primary-dark);
  border-color:var(--primary-dark);
}
.btn-orange{
  background:var(--orange);
  color:#fff;
  border:1px solid var(--orange);
}
.btn-orange:hover{
  background:var(--orange-dark);
  border-color:var(--orange-dark);
  color:#fff;
  transform:translateY(-2px);
  box-shadow:var(--shadow);
}
.btn-sm{
  padding:9px 18px;
  font-size:14px;
  border-radius:var(--radius-md);
}
.btn-lg{
  padding:16px 34px;
  font-size:16px;
  border-radius:var(--radius-md);
}

/* 全站头部导航 */
.site-header{
  background:var(--white);
  border-bottom:1px solid #E2EBF3;
  box-shadow:0 2px 10px rgba(19,53,82,.04);
  position:sticky;
  top:0;
  z-index:100;
}
.site-header .grid-container{
  max-width:1200px;
}
.site-header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:var(--header-h);
}
.brand{
  flex:0 0 auto;
}
.brand-link{
  display:flex;
  align-items:center;
  gap:10px;
}
.brand-mark{
  width:36px;
  height:36px;
  flex:0 0 36px;
  border-radius:12px;
  background:var(--primary);
  color:#fff;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:13px;
  font-weight:800;
  letter-spacing:.04em;
}
.brand-text{
  display:flex;
  flex-direction:column;
  line-height:1.2;
  font-weight:800;
  color:var(--heading);
  font-size:18px;
}
.brand-text small{
  font-size:11px;
  color:var(--muted);
  font-weight:600;
  letter-spacing:.08em;
}
.nav-toggle-btn{
  display:none;
  width:42px;
  height:42px;
  border-radius:10px;
  background:var(--primary-soft);
  color:var(--primary);
  align-items:center;
  justify-content:center;
  font-size:18px;
}
.nav-toggle-btn:focus-visible{
  outline:3px solid rgba(15,163,160,.35);
  outline-offset:2px;
}
.site-nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex:1;
  gap:20px;
}
.site-menu{
  display:flex;
  align-items:center;
  gap:6px;
}
.site-menu li{
  position:relative;
}
.site-menu a{
  display:inline-flex;
  align-items:center;
  height:68px;
  padding:0 14px;
  font-size:15px;
  font-weight:600;
  color:var(--heading);
  position:relative;
}
.site-menu a::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:0;
  height:3px;
  border-radius:8px 8px 0 0;
  background:var(--primary);
  opacity:0;
  transform:scaleX(.6);
  transition:opacity .25s ease,transform .25s ease;
}
.site-menu li.current a{
  color:var(--primary);
}
.site-menu li.current a::after{
  opacity:1;
  transform:scaleX(1);
}
.site-menu a:hover{
  color:var(--primary);
}
.site-menu a:hover::after{
  opacity:.5;
  transform:scaleX(.8);
}
.nav-extra{
  display:flex;
  align-items:center;
  gap:14px;
}
.search-box{
  display:flex;
  align-items:center;
  gap:8px;
  width:190px;
  height:38px;
  padding:0 14px;
  background:#F2F7FC;
  border:1px solid var(--border);
  border-radius:var(--radius-pill);
  color:var(--muted);
  transition:border-color .25s ease,box-shadow .25s ease;
}
.search-box:focus-within{
  border-color:var(--primary);
  background:#fff;
  box-shadow:0 0 0 4px rgba(23,101,184,.1);
}
.search-box i{
  font-size:13px;
}
.search-box input{
  width:100%;
  border:none;
  background:transparent;
  outline:none;
  font-size:14px;
  color:var(--heading);
}
.search-box input::placeholder{
  color:#A8BCCE;
}

/* 面包屑 */
.breadcrumb-section{
  padding:22px 0 14px;
}
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--muted);
}
.breadcrumb a{
  color:var(--muted);
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.breadcrumb a:hover{
  color:var(--primary);
}
.breadcrumb-sep{
  color:#BFD0DF;
  font-size:11px;
}
.breadcrumb-current{
  color:var(--heading);
  font-weight:600;
  max-width:260px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}

/* 文章主体 */
.article-main{
  padding:0 0 68px;
}
.article-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr) 300px;
  gap:28px;
  align-items:start;
}
.article-panel{
  background:var(--white);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow);
  padding:42px 48px 46px;
}
.article-header{
  margin-bottom:30px;
}
.article-badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  background:var(--primary-soft);
  color:var(--primary);
  font-size:13px;
  font-weight:700;
  padding:6px 14px;
  border-radius:var(--radius-pill);
  margin-bottom:16px;
  letter-spacing:.03em;
}
.article-title{
  font-size:30px;
  line-height:1.45;
  font-weight:800;
  color:var(--heading);
  margin-bottom:18px;
  text-align:left;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:18px;
  font-size:13px;
  color:var(--muted);
  padding-top:16px;
  border-top:1px solid #E9F0F7;
}
.article-meta-item{
  display:inline-flex;
  align-items:center;
  gap:7px;
}
.article-meta-item i{
  color:#8EA8BE;
  font-size:13px;
}
.article-divider{
  background:#E9F0F7;
  height:1px;
  margin:32px 0;
}

/* 正文排版 */
.article-content{
  font-size:16px;
  line-height:1.9;
  color:var(--body);
  word-break:break-word;
}
.article-content p{
  margin-bottom:1.4em;
}
.article-content h2{
  font-size:23px;
  line-height:1.5;
  color:var(--heading);
  margin:1.8em 0 .8em;
  padding-left:14px;
  border-left:4px solid var(--primary);
  font-weight:800;
}
.article-content h3{
  font-size:20px;
  color:var(--heading);
  margin:1.6em 0 .7em;
  font-weight:800;
}
.article-content h4{
  font-size:17px;
  color:var(--heading);
  margin:1.4em 0 .6em;
  font-weight:700;
}
.article-content ul{
  margin:0 0 1.4em;
  padding-left:0;
}
.article-content ul li{
  position:relative;
  padding-left:24px;
  margin-bottom:10px;
}
.article-content ul li::before{
  content:"";
  position:absolute;
  left:4px;
  top:.78em;
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--accent);
}
.article-content ol{
  margin:0 0 1.4em;
  padding-left:2px;
  counter-reset:article-ol;
}
.article-content ol li{
  position:relative;
  padding-left:28px;
  margin-bottom:10px;
  counter-increment:article-ol;
}
.article-content ol li::before{
  content:counter(article-ol) ".";
  position:absolute;
  left:0;
  top:0;
  color:var(--primary);
  font-weight:800;
}
.article-content blockquote{
  background:#F1F6FB;
  border-left:4px solid var(--primary);
  padding:20px 24px;
  border-radius:0 10px 10px 0;
  margin:1.6em 0;
  color:var(--heading);
}
.article-content blockquote p:last-child{
  margin-bottom:0;
}
.article-content img{
  border-radius:12px;
  border:1px solid var(--border);
  margin:20px auto;
  box-shadow:var(--shadow);
}
.article-content a{
  color:var(--primary);
  text-decoration:underline;
  text-underline-offset:4px;
  font-weight:600;
}
.article-content a:hover{
  color:var(--accent);
}
.article-content strong{
  color:var(--heading);
  font-weight:800;
}
.article-content table{
  width:100%;
  border-collapse:collapse;
  margin:1.6em 0;
  font-size:15px;
  background:#fff;
  border-radius:10px;
  overflow:hidden;
}
.article-content th{
  background:var(--primary-soft);
  color:var(--heading);
  font-weight:700;
  padding:13px 16px;
  border:1px solid var(--border);
  text-align:left;
}
.article-content td{
  padding:12px 16px;
  border:1px solid var(--border);
  color:var(--body);
}
.article-content code{
  background:#F0F4F8;
  color:#1D5C94;
  border-radius:5px;
  padding:2px 8px;
  font-size:.92em;
}
.article-bottom-bar{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  margin-top:42px;
  padding-top:26px;
  border-top:1px solid #E9F0F7;
}
.article-bottom-bar .cat-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:var(--primary-soft);
  color:var(--primary);
  font-size:14px;
  font-weight:700;
  padding:10px 18px;
  border-radius:var(--radius-pill);
}
.article-bottom-bar .cat-link:hover{
  background:#DDEAF7;
  color:var(--primary-dark);
}
.article-empty-panel{
  background:var(--white);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow);
  padding:90px 40px;
  text-align:center;
}
.article-empty-icon{
  width:76px;
  height:76px;
  border-radius:24px;
  background:var(--primary-soft);
  color:var(--primary);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:30px;
  margin:0 auto 22px;
}
.article-empty-panel h2{
  font-size:24px;
  font-weight:800;
  color:var(--heading);
  margin-bottom:12px;
}
.article-empty-panel p{
  color:var(--muted);
  margin-bottom:26px;
}

/* 侧栏组件 */
.sidebar{
  display:flex;
  flex-direction:column;
  gap:24px;
}
.sidebar-card{
  background:var(--white);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow);
  padding:26px 24px;
}
.sidebar-card-title{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:16px;
  font-weight:800;
  color:var(--heading);
  margin-bottom:20px;
}
.sidebar-card-title .card-icon{
  width:34px;
  height:34px;
  border-radius:10px;
  background:var(--primary-soft);
  color:var(--primary);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:14px;
}
.related-list{
  display:flex;
  flex-direction:column;
  gap:8px;
}
.related-item{
  display:flex;
  align-items:flex-start;
  gap:10px;
  padding:13px 14px;
  background:#FAFCFE;
  border:1px solid #E6EFF7;
  border-radius:12px;
  transition:all .25s ease;
}
.related-item i{
  color:var(--accent);
  font-size:13px;
  margin-top:5px;
}
.related-item span{
  font-size:14px;
  font-weight:600;
  color:var(--heading);
  line-height:1.45;
}
.related-item small{
  display:block;
  font-size:12px;
  color:var(--muted);
  font-weight:400;
  line-height:1.5;
  margin-top:3px;
}
.related-item:hover{
  background:var(--primary-soft);
  border-color:rgba(23,101,184,.2);
  transform:translateX(3px);
}
.help-download-card{
  position:relative;
  overflow:hidden;
  background:linear-gradient(180deg,#F8FCFE,#EDF4FA);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:26px 24px 28px;
  text-align:center;
}
.help-download-card .pic{
  border-radius:12px;
  margin-bottom:16px;
  overflow:hidden;
}
.help-download-card img{
  width:100%;
  height:96px;
  object-fit:cover;
}
.help-download-card h3{
  font-size:18px;
  font-weight:800;
  color:var(--heading);
  margin-bottom:6px;
}
.help-download-card p{
  font-size:13px;
  color:var(--muted);
  margin-bottom:18px;
}
.sidebar-tips{
  background:#F2FAF8;
  border:1px solid #D6EFEB;
  border-radius:12px;
  padding:16px 16px 16px 18px;
  font-size:13px;
  color:var(--body);
  line-height:1.7;
}
.sidebar-tips i{
  color:var(--accent);
  margin-right:6px;
}

/* 页脚 */
.site-footer{
  background:#10263D;
  color:#AFC5D6;
  padding:58px 0 0;
  margin-top:24px;
}
.footer-cols{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:44px;
  padding-bottom:44px;
}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin-bottom:14px;
}
.footer-brand .brand-mark{
  background:rgba(255,255,255,.1);
  color:#fff;
}
.footer-brand .brand-text{
  color:#fff;
  font-size:18px;
}
.footer-desc{
  font-size:13px;
  line-height:1.85;
  color:#9DB4C7;
  max-width:330px;
}
.footer-title{
  color:#fff;
  font-weight:700;
  font-size:15px;
  margin:4px 0 18px;
}
.footer-links{
  display:flex;
  flex-direction:column;
  gap:12px;
}
.footer-links a{
  color:#A5BBCD;
  font-size:14px;
  transition:color .2s,transform .2s;
}
.footer-links a:hover{
  color:#fff;
  transform:translateX(3px);
}
.footer-info-text{
  font-size:13px;
  color:#93A9BD;
  display:flex;
  flex-direction:column;
  gap:8px;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:10px;
  padding:22px 0 26px;
  color:#86A0B5;
  font-size:13px;
}
.footer-bottom a{
  color:#AFC5D6;
}
.footer-bottom a:hover{
  color:#fff;
}

/* 响应式 */
@media (max-width: 1024px){
  .nav-toggle-btn{
    display:inline-flex;
    margin-left:auto;
  }
  .site-header-inner{
    flex-wrap:wrap;
    height:auto;
    min-height:var(--header-h);
    padding-top:14px;
    padding-bottom:14px;
  }
  .site-nav{
    display:none;
    width:100%;
    flex-direction:column;
    gap:0;
    padding:10px 0 16px;
    border-top:1px solid #E9F0F7;
  }
  .site-nav.open{
    display:flex;
  }
  .site-menu{
    width:100%;
    flex-direction:column;
    align-items:stretch;
    gap:2px;
  }
  .site-menu a{
    height:48px;
    padding:0 8px;
    border-radius:10px;
    font-size:15px;
  }
  .site-menu a::after{
    content:none;
  }
  .site-menu li.current a{
    background:var(--primary-soft);
  }
  .nav-extra{
    width:100%;
    margin-top:14px;
    flex-direction:column;
    align-items:stretch;
  }
  .search-box{
    width:100%;
    border-radius:10px;
    background:#F3F8FC;
  }
  .nav-cta{
    width:100%;
  }
  .article-grid{
    grid-template-columns:1fr;
  }
  .sidebar{
    display:grid;
    grid-template-columns:1fr;
    gap:24px;
  }
  .site-footer{
    margin-top:0;
  }
  .footer-cols{
    grid-template-columns:1fr 1fr;
    gap:34px;
  }
}
@media (max-width: 768px){
  .article-panel{
    padding:28px 20px 32px;
  }
  .article-title{
    font-size:22px;
  }
  .article-meta{
    gap:12px;
  }
  .article-content h2{
    font-size:20px;
  }
  .article-content h3{
    font-size:18px;
  }
  .article-content table{
    display:block;
    overflow-x:auto;
  }
}
@media (max-width: 520px){
  .container{
    padding:0 16px;
  }
  .brand-text{
    font-size:16px;
  }
  .brand-text small{
    font-size:10px;
  }
  .article-main{
    padding-bottom:40px;
  }
  .footer-cols{
    grid-template-columns:1fr;
    gap:28px;
    padding-bottom:28px;
  }
  .footer-bottom{
    flex-direction:column;
    justify-content:center;
    text-align:center;
  }
}

/* roulang page: category1 */
:root{
  --main:#1765B8;
  --main-deep:#14579E;
  --main-light:#EAF2FA;
  --accent:#0FA3A0;
  --accent-light:#E4F5F4;
  --orange:#E67E22;
  --orange-deep:#CF6C14;
  --dark:#122B3F;
  --body:#35536B;
  --muted:#7790A4;
  --bg:#F5F8FC;
  --white:#FFFFFF;
  --line:#DCE7F2;
  --radius-lg:16px;
  --radius-md:10px;
  --radius-pill:999px;
  --shadow:0 6px 20px rgba(23,101,184,.08);
  --shadow-hover:0 12px 30px rgba(23,101,184,.13);
  --transition:all .25s ease;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--body);font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei UI","Noto Sans CJK SC",sans-serif;font-size:16px;line-height:1.8;text-align:left}
ul,ol{list-style:none}
a{color:var(--main);text-decoration:none;transition:var(--transition)}
img{max-width:100%;display:block}
button,input,select,textarea{font:inherit;color:inherit}
.grid-container{max-width:1200px}
.section{padding:clamp(4rem,8vw,7rem) 0;scroll-margin-top:90px}
.section-head{max-width:760px;margin:0 auto 46px;text-align:center}
.section-head .eyebrow{color:var(--accent);font-size:14px;font-weight:700;letter-spacing:.08em;display:inline-flex;align-items:center;gap:8px;margin-bottom:10px}
.section-head h2{font-size:clamp(28px,4vw,38px);line-height:1.3;color:var(--dark);font-weight:800}
.section-head p{color:var(--muted);font-size:16px;margin-top:12px}
.tag{display:inline-flex;align-items:center;gap:6px;background:var(--main-light);color:var(--main);border-radius:var(--radius-pill);padding:6px 14px;font-size:12px;font-weight:600;line-height:1.4}
.tag-green{background:var(--accent-light);color:#0B7B78}
.badge{display:inline-block;background:var(--main-light);color:var(--main);font-size:12px;font-weight:600;padding:4px 12px;border-radius:var(--radius-pill);line-height:1.6}
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.98);border-bottom:1px solid var(--line);box-shadow:0 2px 10px rgba(19,53,82,.04)}
.site-header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;position:relative}
.brand-link{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:42px;height:42px;border-radius:12px;background:var(--main);color:#fff;font-size:14px;font-weight:800;letter-spacing:.04em;display:flex;align-items:center;justify-content:center;box-shadow:0 6px 14px rgba(23,101,184,.24)}
.brand-text{font-size:20px;font-weight:800;color:var(--dark);line-height:1.15;display:block}
.brand-text small{display:block;font-size:10px;font-weight:600;color:var(--muted);letter-spacing:.04em}
.nav-toggle-btn{display:none;width:42px;height:42px;border:1px solid var(--line);background:#fff;border-radius:10px;color:var(--main);font-size:20px;cursor:pointer;align-items:center;justify-content:center}
.nav-toggle-btn:hover{border-color:var(--main);background:var(--main-light)}
.site-nav{display:flex;align-items:center;justify-content:space-between;gap:30px;flex:1}
.site-menu{display:flex;align-items:center;gap:6px}
.site-menu li{margin:0}
.site-menu a{display:block;position:relative;padding:26px 12px;color:var(--dark);font-size:15px;font-weight:600;line-height:1.4;white-space:nowrap}
.site-menu a:hover{color:var(--main)}
.site-menu li.current a{color:var(--main)}
.site-menu li.current a::after{content:"";position:absolute;left:12px;right:12px;bottom:-1px;height:3px;background:var(--main);border-radius:3px 3px 0 0}
.nav-extra{display:flex;align-items:center;gap:12px}
.search-box{display:flex;align-items:center;gap:8px;height:38px;width:198px;padding:0 14px;background:#F2F7FC;border:1px solid var(--line);border-radius:var(--radius-pill);color:#8AA3B6;transition:var(--transition)}
.search-box:focus-within{border-color:var(--main);background:#fff;box-shadow:0 0 0 4px rgba(23,101,184,.12)}
.search-box i{font-size:13px}
.search-box input{width:100%;border:0;background:transparent;outline:none;font-size:13px;color:var(--dark)}
.search-box input::placeholder{color:#92A8BA}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;border-radius:10px;border:2px solid transparent;font-size:15px;font-weight:700;line-height:1;cursor:pointer;transition:var(--transition)}
.btn-sm{height:38px;padding:0 17px;font-size:14px;border-radius:9px}
.btn-primary{background:var(--main);color:#fff;box-shadow:0 6px 16px rgba(23,101,184,.16)}
.btn-primary:hover{background:var(--main-deep);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(23,101,184,.22)}
.btn-outline{background:transparent;border-color:var(--main);color:var(--main)}
.btn-outline:hover{background:#F0F6FC;color:var(--main-deep)}
.btn-orange{background:var(--orange);color:#fff;box-shadow:0 6px 18px rgba(230,126,34,.18)}
.btn-orange:hover{background:var(--orange-deep);color:#fff;transform:translateY(-1px)}
.btn:focus-visible,.btn:active{outline:3px solid rgba(15,163,160,.35);outline-offset:2px}
.btn.btn-sm{padding:0 16px}
.cat-hero{background:linear-gradient(180deg,#fff 0%,#F4F8FC 100%);padding:clamp(3.2rem,6vw,5.6rem) 0;border-bottom:1px solid #E9F0F6;overflow:hidden}
.hero-row{align-items:center}
.cat-hero-copy{padding-right:24px}
.tag-hero{margin-bottom:20px}
.cat-hero h1{font-size:clamp(34px,5vw,54px);line-height:1.25;color:var(--dark);font-weight:800;letter-spacing:-.02em;margin:12px 0 18px}
.cat-hero .lead{font-size:17px;line-height:1.9;color:var(--body);max-width:560px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.hero-meta-list{display:flex;flex-wrap:wrap;gap:18px;color:var(--muted);font-size:13px}
.hero-meta-list span{display:inline-flex;align-items:center;gap:7px}
.hero-meta-list i{color:var(--accent)}
.cat-hero-media img{width:100%;max-height:440px;object-fit:cover;border-radius:20px;box-shadow:0 22px 44px rgba(23,101,184,.14);border:1px solid #DFEAF4}
.download-section{background:var(--white)}
.download-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:10px}
.version-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);transition:var(--transition);display:flex;flex-direction:column}
.version-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.card-img{aspect-ratio:16/10;overflow:hidden;background:var(--main-light);border-bottom:1px solid var(--line)}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.version-card:hover .card-img img{transform:scale(1.03)}
.version-card-body{padding:24px;display:flex;flex-direction:column;flex:1}
.card-tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.version-card h3{font-size:20px;line-height:1.45;color:var(--dark);font-weight:800;margin-bottom:10px}
.version-card p{font-size:14px;color:var(--body);line-height:1.75;margin-bottom:18px}
.card-file-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}
.file-tag{display:inline-block;background:#F2F7FC;border:1px solid #E0EAF3;border-radius:6px;font-size:12px;font-weight:600;color:var(--muted);padding:3px 9px}
.card-bottom{margin-top:auto}
.btn-link{display:inline-flex;align-items:center;gap:6px;color:var(--main);font-size:14px;font-weight:700}
.btn-link i{transition:transform .2s ease}
.btn-link:hover{color:var(--main-deep)}
.btn-link:hover i{transform:translateX(4px)}
.info-split-section{background:var(--bg)}
.info-split{display:grid;grid-template-columns:minmax(0,.96fr) minmax(0,1.04fr);gap:46px;align-items:center}
.info-media img{width:100%;border-radius:20px;box-shadow:0 16px 36px rgba(23,101,184,.12);border:1px solid var(--line)}
.info-copy .eyebrow{color:var(--accent);font-size:14px;font-weight:700;letter-spacing:.06em;margin-bottom:8px;display:inline-flex;align-items:center;gap:8px}
.info-copy h2{font-size:clamp(26px,3.6vw,34px);line-height:1.4;color:var(--dark);font-weight:800;margin:6px 0 14px}
.info-copy p{font-size:15px;line-height:1.9;margin-bottom:22px}
.info-features{display:grid;gap:13px;margin-top:6px}
.info-features li{display:flex;gap:11px;font-size:15px;line-height:1.7;color:var(--dark)}
.info-features i{color:var(--accent);margin-top:6px;font-size:14px;flex-shrink:0}
.steps-section{background:#fff;border-top:1px solid #EFF4FA}
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:20px}
.step-item{background:#F8FBFE;border:1px solid var(--line);border-radius:16px;padding:28px 22px 24px;transition:var(--transition)}
.step-item:hover{background:#fff;box-shadow:var(--shadow);transform:translateY(-2px)}
.step-num{width:44px;height:44px;border-radius:14px;background:var(--main);color:#fff;display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:800;margin-bottom:18px;box-shadow:0 8px 16px rgba(23,101,184,.18)}
.step-item h3{font-size:18px;color:var(--dark);font-weight:800;margin-bottom:8px}
.step-item p{font-size:14px;color:var(--body);line-height:1.8}
.steps-note{max-width:680px;background:var(--accent-light);border:1px solid rgba(15,163,160,.25);border-radius:14px;color:#126B67;padding:16px 20px;margin:24px auto 0;text-align:center;font-size:14px}
.faq-section{background:var(--bg)}
.faq-wrap{max-width:850px;margin:0 auto}
.faq-accordion{margin-top:18px}
.faq-accordion .accordion-item{background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:14px;overflow:hidden;box-shadow:0 3px 12px rgba(19,53,82,.04)}
.faq-accordion .accordion-item.is-active{border-color:#BFD8EE}
.faq-accordion .accordion-title{position:relative;display:block;padding:22px 62px 22px 22px;background:#fff;color:var(--dark);font-size:16px;font-weight:700;line-height:1.6;border-bottom:1px solid transparent}
.faq-accordion .accordion-title:hover{color:var(--main)}
.faq-accordion .accordion-title::after{display:none}
.faq-q-text{display:block;padding-right:18px}
.faq-icon{position:absolute;top:50%;right:22px;transform:translateY(-50%);width:26px;height:26px;border-radius:7px;background:var(--main-light);transition:var(--transition)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;top:50%;left:50%;width:12px;height:2px;background:var(--main);transform:translate(-50%,-50%);border-radius:2px;transition:var(--transition)}
.faq-icon::after{transform:translate(-50%,-50%) rotate(90deg)}
.is-active .faq-icon{background:var(--main)}
.is-active .faq-icon::before,.is-active .faq-icon::after{background:#fff}
.is-active .faq-icon::after{transform:translate(-50%,-50%) rotate(0deg)}
.faq-accordion .accordion-content{background:#FAFCFE;border-top:1px solid #E1ECF5;padding:0 22px;line-height:1.9;font-size:15px;color:var(--body)}
.faq-accordion .accordion-content .content-inner{padding:18px 0 22px}
.contact-panel-section{background:#fff}
.contact-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:50px;align-items:start;background:#fff;border:1px solid var(--line);border-radius:20px;padding:46px;box-shadow:var(--shadow)}
.contact-info .eyebrow{color:var(--accent);font-size:14px;font-weight:700;letter-spacing:.06em;margin-bottom:10px;display:inline-flex;align-items:center;gap:8px}
.contact-info h2{font-size:clamp(26px,3.4vw,32px);color:var(--dark);font-weight:800;line-height:1.4;margin-bottom:12px}
.contact-info p{color:var(--muted);font-size:15px;line-height:1.9;margin-bottom:24px}
.contact-points{display:grid;gap:14px;margin-top:6px}
.contact-points li{display:flex;align-items:flex-start;gap:12px;font-size:15px;line-height:1.7;color:var(--dark)}
.contact-points li i{background:var(--accent-light);color:#0B7B78;border-radius:50%;width:22px;height:22px;display:flex;align-items:center;justify-content:center;font-size:11px;flex-shrink:0;margin-top:4px}
.contact-form{border-radius:18px}
.form-title{font-size:20px;font-weight:800;color:var(--dark);margin-bottom:6px}
.form-sub{font-size:13px;color:var(--muted);margin-bottom:22px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px}
.form-group{margin-bottom:16px}
.form-label{display:block;font-size:14px;font-weight:600;color:var(--dark);margin-bottom:7px}
.form-input,.form-select,.form-textarea{width:100%;height:44px;padding:10px 14px;background:#FBFDFE;border:1px solid #C7D6E4;border-radius:10px;outline:none;transition:var(--transition);color:var(--dark);font-size:14px;line-height:1.6}
.form-textarea{height:auto;min-height:120px;resize:vertical}
.form-input:focus,.form-select:focus,.form-textarea:focus{border-color:var(--main);background:#fff;box-shadow:0 0 0 4px rgba(23,101,184,.12)}
.form-check{display:flex;align-items:flex-start;gap:9px;font-size:13px;color:var(--muted);margin-bottom:18px}
.form-check input{margin-top:4px;accent-color:var(--main)}
.site-footer{background:#fff;border-top:1px solid var(--line);color:var(--body);padding-top:60px}
.footer-cols{display:grid;grid-template-columns:1.4fr .8fr .8fr 1fr;gap:38px;padding-bottom:42px}
.footer-brand{display:inline-flex;align-items:center;gap:9px;margin-bottom:14px}
.footer-desc{font-size:14px;color:var(--muted);line-height:1.9;max-width:360px}
.footer-title{color:var(--dark);font-size:16px;font-weight:800;margin-bottom:16px}
.footer-links{display:grid;gap:9px}
.footer-links a{color:var(--muted);font-size:14px;line-height:1.6}
.footer-links a:hover{color:var(--main)}
.footer-info-text p{font-size:13px;line-height:2;color:var(--muted)}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:20px 0;border-top:1px solid #E8EFF6;font-size:13px;color:var(--muted)}
.footer-bottom a{color:var(--muted)}
.footer-bottom a:hover{color:var(--main)}
@media screen and (max-width:1023px){
  .cat-hero-copy{padding-right:0;margin-bottom:30px}
  .hero-row .cat-hero-media{margin-top:8px}
  .info-split,.contact-grid{grid-template-columns:1fr;gap:32px}
  .steps-grid{grid-template-columns:repeat(2,1fr)}
  .download-grid{grid-template-columns:repeat(2,1fr)}
  .footer-cols{grid-template-columns:1fr 1fr;gap:32px}
  .site-header-inner{flex-wrap:wrap;height:auto;padding-top:12px;padding-bottom:12px}
  .site-nav{position:absolute;left:0;right:0;top:72px;background:#fff;flex-direction:column;align-items:stretch;gap:18px;display:none;padding:8px 20px 20px;border-bottom:1px solid var(--line);box-shadow:0 18px 26px rgba(19,53,82,.08)}
  .site-nav.is-open{display:flex}
  .site-menu{flex-direction:column;align-items:stretch;width:100%;gap:2px}
  .site-menu a{padding:14px 0;border-bottom:1px solid #EEF3F8}
  .site-menu li.current a:after{left:0;right:auto;width:30px;bottom:0;height:3px}
  .nav-extra{width:100%;flex-direction:column;align-items:stretch}
  .search-box{width:100%}
  .nav-extra .btn-cta-panel,.nav-extra .btn{width:100%;justify-content:center}
  .nav-toggle-btn{display:flex}
  .site-header-inner .brand{margin-right:auto}
}
@media screen and (max-width:780px){
  .container,.grid-container{padding-left:18px;padding-right:18px}
  .cat-hero .lead{font-size:16px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .download-grid,.steps-grid{grid-template-columns:1fr}
  .contact-grid{padding:28px}
  .form-row{grid-template-columns:1fr;gap:0}
  .form-row .form-group{margin-bottom:16px}
  .footer-cols{grid-template-columns:1fr;gap:28px}
  .footer-desc{max-width:100%}
  .footer-bottom{justify-content:center;text-align:center}
  .site-header-inner{height:auto}
  .brand-text{font-size:18px}
  .brand-mark{width:38px;height:38px;border-radius:10px}
  .site-nav{top:64px}
}
@media screen and (max-width:520px){
  .section{padding:clamp(3rem,7vw,4rem) 0}
  .cat-hero{ padding-top:38px}
  .nav-extra .btn-sm{height:44px}
  .cat-hero h1{font-size:32px}
  .version-card-body{padding:20px}
  .contact-grid{padding:22px}
  .brand small{display:none}
  .brand-text{font-size:18px}
  .footer-bottom span{width:100%}
}

/* roulang page: category2 */
:root {
            --color-primary: #1765B8;
            --color-primary-dark: #14579E;
            --color-primary-soft: #EAF2FA;
            --color-accent: #0FA3A0;
            --color-bg: #F5F8FC;
            --color-card: #FFFFFF;
            --color-title: #122B3F;
            --color-body: #35536B;
            --color-weak: #7790A4;
            --color-border: #DCE7F2;
            --color-nav-border: #E2EBF3;
            --color-warm: #E67E22;
            --color-warm-dark: #CF6C14;
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-pill: 999px;
            --shadow-card: 0 6px 20px rgba(23, 101, 184, 0.08);
            --shadow-card-hover: 0 12px 30px rgba(23, 101, 184, 0.13);
            --space-section: clamp(4rem, 8vw, 7rem);
        }

        * {
            box-sizing: border-box;
        }

        body {
            margin: 0;
            font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei UI", "Noto Sans CJK SC", sans-serif;
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-body);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }

        body,
        h1,
        h2,
        h3,
        h4,
        p,
        ul,
        ol {
            margin: 0;
            padding: 0;
        }

        ul,
        ol {
            list-style: none;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s ease;
        }

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 3px solid rgba(15, 163, 160, 0.35);
            outline-offset: 2px;
        }

        .grid-container {
            max-width: 1220px;
            padding-right: 24px;
            padding-left: 24px;
            margin-right: auto;
            margin-left: auto;
        }

        section[id],
        div[id] {
            scroll-margin-top: 92px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background-color: #FFFFFF;
            border-bottom: 1px solid var(--color-nav-border);
            box-shadow: 0 2px 10px rgba(19, 53, 82, 0.04);
        }

        .site-header-inner {
            display: flex;
            align-items: center;
            min-height: 72px;
            max-width: 1220px;
            gap: 24px;
        }

        .brand {
            flex-shrink: 0;
        }

        .brand-link {
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .brand-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background-color: var(--color-primary);
            color: #FFFFFF;
            font-size: 14px;
            font-weight: 900;
            letter-spacing: .4px;
            box-shadow: 0 4px 12px rgba(23, 101, 184, 0.22);
        }

        .brand-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
            font-size: 20px;
            font-weight: 800;
            color: var(--color-title);
            white-space: nowrap;
        }

        .brand-text small {
            font-size: 12px;
            font-weight: 400;
            color: var(--color-weak);
            letter-spacing: .2px;
        }

        .nav-toggle-btn {
            display: none;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            margin-left: auto;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            background-color: transparent;
            color: var(--color-title);
            font-size: 20px;
            cursor: pointer;
        }

        .nav-toggle-btn:hover {
            background-color: var(--color-primary-soft);
        }

        .site-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex: 1;
            gap: 20px;
        }

        .site-menu {
            display: flex;
            align-items: center;
            gap: 4px;
            margin-bottom: 0;
        }

        .site-menu li {
            position: relative;
        }

        .site-menu a {
            display: block;
            padding: 10px 12px;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-title);
            border-radius: 8px;
            line-height: 1.4;
        }

        .site-menu a:hover {
            background-color: #F2F7FC;
            color: var(--color-primary);
        }

        .site-menu .current a {
            color: var(--color-primary);
        }

        .site-menu .current a::after {
            content: "";
            position: absolute;
            left: 12px;
            right: 12px;
            bottom: -2px;
            height: 3px;
            border-radius: 4px;
            background-color: var(--color-primary);
        }

        .nav-extra {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .search-box {
            display: flex;
            align-items: center;
            gap: 8px;
            width: 180px;
            height: 38px;
            padding: 0 14px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-pill);
            background-color: #F7FAFD;
            color: var(--color-weak);
            transition: border-color .2s ease, background-color .2s ease;
        }

        .search-box:focus-within {
            border-color: var(--color-primary);
            background-color: #FFFFFF;
            box-shadow: 0 0 0 4px rgba(23, 101, 184, 0.1);
        }

        .search-box input {
            width: 100%;
            border: 0;
            outline: none;
            background: transparent;
            font-size: 13px;
            color: var(--color-title);
        }

        .search-box input::placeholder {
            color: var(--color-weak);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-md);
            font-family: inherit;
            font-weight: 700;
            font-size: 15px;
            line-height: 1;
            border: 1.5px solid transparent;
            padding: 14px 24px;
            cursor: pointer;
            transition: background-color .2s ease, color .2s ease, box-shadow .2s ease, border-color .2s ease, transform .2s ease;
        }

        .btn i {
            font-size: 14px;
        }

        .btn-primary {
            background-color: var(--color-primary);
            border-color: var(--color-primary);
            color: #FFFFFF;
            box-shadow: 0 8px 20px rgba(23, 101, 184, 0.18);
        }

        .btn-primary:hover {
            background-color: var(--color-primary-dark);
            border-color: var(--color-primary-dark);
            color: #FFFFFF;
            transform: translateY(-1px);
            box-shadow: 0 10px 24px rgba(23, 101, 184, 0.24);
        }

        .btn-outline {
            background-color: transparent;
            border-color: var(--color-primary);
            color: var(--color-primary);
        }

        .btn-outline:hover {
            background-color: #F0F6FC;
            color: var(--color-primary-dark);
            transform: translateY(-1px);
        }

        .btn-warm {
            background-color: var(--color-warm);
            border-color: var(--color-warm);
            color: #FFFFFF;
            box-shadow: 0 8px 20px rgba(230, 126, 34, 0.18);
        }

        .btn-warm:hover {
            background-color: var(--color-warm-dark);
            border-color: var(--color-warm-dark);
            color: #FFFFFF;
            transform: translateY(-1px);
        }

        .btn-sm {
            padding: 9px 16px;
            font-size: 14px;
            border-radius: var(--radius-pill);
        }

        .nav-cta {
            height: 38px;
            border-radius: var(--radius-pill);
        }

        .category-hero {
            position: relative;
            padding: clamp(3.2rem, 6vw, 5.2rem) 0 3.6rem;
            background: linear-gradient(115deg, #FFFFFF 0%, #EAF2F9 100%);
            border-bottom: 1px solid var(--color-border);
            overflow: hidden;
        }

        .category-hero__inner {
            display: flex;
            align-items: center;
            gap: 56px;
        }

        .category-hero__content {
            flex: 1 1 52%;
        }

        .category-hero__content .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            border-radius: var(--radius-pill);
            background-color: rgba(23, 101, 184, 0.08);
            color: var(--color-primary);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 18px;
        }

        .category-hero__content .eyebrow .dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background-color: var(--color-accent);
        }

        .category-hero h1 {
            color: var(--color-title);
            font-size: clamp(32px, 4vw, 46px);
            line-height: 1.25;
            letter-spacing: -0.02em;
            margin-bottom: 18px;
        }

        .category-hero p {
            max-width: 580px;
            font-size: 16px;
            color: #45647C;
            line-height: 1.85;
            margin-bottom: 30px;
        }

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

        .category-hero__visual {
            flex: 0 1 46%;
            max-width: 520px;
            margin-left: auto;
        }

        .category-hero__visual img {
            width: 100%;
            border-radius: var(--radius-lg);
            box-shadow: 0 18px 44px rgba(23, 101, 184, 0.16);
            border: 1px solid rgba(255, 255, 255, 0.8);
            object-fit: cover;
            aspect-ratio: 4 / 3;
        }

        .cat-section {
            padding: var(--space-section) 0;
        }

        .section-white {
            background-color: #FFFFFF;
            border-bottom: 1px solid var(--color-border);
        }

        .section-head {
            max-width: 780px;
            margin: 0 auto 46px;
            text-align: center;
        }

        .section-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: var(--radius-pill);
            background-color: var(--color-primary-soft);
            color: var(--color-primary);
            font-size: 13px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: clamp(26px, 3.6vw, 36px);
            font-weight: 800;
            line-height: 1.35;
            color: var(--color-title);
            letter-spacing: -0.01em;
            margin-bottom: 12px;
        }

        .section-head p {
            font-size: 16px;
            color: #5B748A;
        }

        .feature-col,
        .guide-card-wrap {
            margin-bottom: 30px;
        }

        .feature-card {
            position: relative;
            height: 100%;
            padding: 32px 28px;
            background: #FFFFFF;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            transition: transform .25s ease, box-shadow .25s ease;
        }

        .feature-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
        }

        .feature-card .icon-box {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            margin-bottom: 20px;
            border-radius: 12px;
            background-color: var(--color-primary-soft);
            color: var(--color-primary);
            font-size: 22px;
        }

        .feature-card .feature-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            color: var(--color-accent);
            margin-bottom: 8px;
        }

        .feature-card h3 {
            font-size: 20px;
            font-weight: 800;
            color: var(--color-title);
            line-height: 1.45;
            margin-bottom: 8px;
        }

        .feature-card p {
            font-size: 15px;
            line-height: 1.8;
            color: #5B748A;
            margin-bottom: 0;
        }

        .step-item {
            position: relative;
            height: 100%;
            padding: 28px 22px 22px;
            background-color: #FFFFFF;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            transition: transform .25s ease, box-shadow .25s ease;
        }

        .step-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
        }

        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background-color: var(--color-primary);
            color: #FFFFFF;
            font-size: 18px;
            font-weight: 900;
            margin-bottom: 18px;
            box-shadow: 0 8px 16px rgba(23, 101, 184, 0.2);
        }

        .step-item h3 {
            font-size: 18px;
            font-weight: 800;
            color: var(--color-title);
            margin-bottom: 8px;
        }

        .step-item p {
            font-size: 14px;
            line-height: 1.75;
            color: #5B748A;
            margin-bottom: 0;
        }

        .guide-card {
            display: flex;
            flex-direction: column;
            height: 100%;
            background-color: #FFFFFF;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: transform .25s ease, box-shadow .25s ease;
        }

        .guide-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
        }

        .guide-card-thumb {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background-color: #EAF2FA;
        }

        .guide-card-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }

        .guide-card:hover .guide-card-thumb img {
            transform: scale(1.03);
        }

        .guide-card-body {
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            padding: 24px 24px 22px;
            flex: 1;
        }

        .tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            background-color: var(--color-primary-soft);
            color: var(--color-primary);
            font-size: 13px;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 12px;
        }

        .guide-card h3 {
            font-size: 18px;
            font-weight: 800;
            line-height: 1.5;
            color: var(--color-title);
            margin-bottom: 8px;
        }

        .guide-card p {
            font-size: 14px;
            line-height: 1.75;
            color: #5B748A;
            margin-bottom: 16px;
        }

        .guide-card-more {
            margin-top: auto;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--color-primary);
            font-size: 14px;
            font-weight: 700;
            padding-top: 12px;
            border-top: 1px solid #EDF2F8;
        }

        .guide-card-more i {
            font-size: 12px;
            transition: transform .2s ease;
        }

        .guide-card:hover .guide-card-more i {
            transform: translateX(4px);
        }

        .helper-block {
            padding: clamp(2.8rem, 5vw, 4.6rem) 0;
        }

        .helper-visual img {
            width: 100%;
            border-radius: var(--radius-lg);
            object-fit: cover;
            box-shadow: var(--shadow-card-hover);
            border: 1px solid var(--color-border);
        }

        .helper-copy {
            padding-left: 16px;
        }

        .helper-copy h2 {
            font-size: clamp(25px, 3vw, 32px);
            font-weight: 800;
            color: var(--color-title);
            line-height: 1.4;
            letter-spacing: -0.01em;
            margin-bottom: 16px;
        }

        .helper-copy>p {
            margin-bottom: 22px;
            color: #45647C;
        }

        .check-list {
            margin-bottom: 26px;
        }

        .check-list li {
            position: relative;
            padding: 8px 0 8px 32px;
            color: var(--color-body);
            font-size: 15px;
            line-height: 1.8;
        }

        .check-list li::before {
            content: "\f00c";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 9px;
            width: 22px;
            height: 22px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background-color: rgba(15, 163, 160, 0.1);
            color: var(--color-accent);
            font-size: 11px;
        }

        .faq-section {
            padding: var(--space-section) 0;
        }

        .faq-wrap {
            max-width: 960px;
            margin: 0 auto;
        }

        .accordion.faq-accordion {
            background: transparent;
            margin: 0;
        }

        .faq-accordion .accordion-item {
            background-color: #FFFFFF;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
            box-shadow: 0 2px 10px rgba(23, 101, 184, 0.03);
            transition: border-color .25s ease, box-shadow .25s ease;
        }

        .faq-accordion .accordion-item.is-active {
            border-color: rgba(23, 101, 184, 0.28);
            box-shadow: 0 6px 20px rgba(23, 101, 184, 0.08);
        }

        .faq-accordion .accordion-title {
            position: relative;
            display: block;
            padding: 20px 56px 20px 24px;
            font-size: 17px;
            font-weight: 700;
            color: var(--color-title);
            border: 0 !important;
            background: transparent !important;
            line-height: 1.5 !important;
            text-transform: none;
            font-family: inherit;
        }

        .faq-accordion .accordion-title:hover {
            color: var(--color-primary);
            background-color: #FAFCFE !important;
        }

        .faq-accordion .accordion-title::before {
            display: none !important;
        }

        .faq-accordion .accordion-title::after {
            content: "+";
            position: absolute;
            right: 24px;
            top: 50%;
            transform: translateY(-50%);
            display: flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 8px;
            background-color: var(--color-primary-soft);
            color: var(--color-primary);
            font-size: 22px;
            font-weight: 500;
            line-height: 1;
            transition: transform .2s ease;
        }

        .faq-accordion .accordion-item.is-active>.accordion-title::after {
            content: "-";
        }

        .faq-accordion .accordion-content {
            padding: 0 28px 22px 24px;
            border: 0;
            background: transparent;
            color: var(--color-body);
            font-size: 15px;
            line-height: 1.85;
        }

        .faq-accordion .accordion-content p {
            padding-top: 0;
            margin-bottom: 0;
            border-left: 3px solid var(--color-primary);
            padding-left: 20px;
            background: #F8FBFE;
            border-radius: 0 10px 10px 0;
            padding: 14px 18px;
        }

        .contact-section {
            padding: var(--space-section) 0;
        }

        .contact-card {
            max-width: 1160px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0;
            background-color: #FFFFFF;
            border: 1px solid var(--color-border);
            border-radius: 20px;
            box-shadow: var(--shadow-card-hover);
            overflow: hidden;
        }

        .contact-info {
            padding: clamp(32px, 5vw, 56px);
            background: linear-gradient(145deg, #FFFFFF 0%, #EAF2F9 100%);
        }

        .contact-info .section-tag {
            margin-bottom: 14px;
        }

        .contact-info h2 {
            font-size: clamp(24px, 3vw, 32px);
            font-weight: 800;
            color: var(--color-title);
            line-height: 1.4;
            margin-bottom: 16px;
        }

        .contact-info p {
            color: #45647C;
            margin-bottom: 22px;
            font-size: 15px;
        }

        .contact-info .check-list {
            margin-bottom: 0;
        }

        .contact-form-wrap {
            padding: clamp(32px, 5vw, 56px);
        }

        .contact-form-wrap label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: #34516A;
            margin-bottom: 20px;
        }

        .contact-form-wrap input,
        .contact-form-wrap textarea {
            width: 100%;
            margin-top: 6px;
            border: 1px solid #C7D6E4;
            border-radius: var(--radius-md);
            padding: 11px 14px;
            font-family: inherit;
            font-size: 15px;
            color: var(--color-title);
            background-color: #FFFFFF;
            transition: border-color .2s ease, box-shadow .2s ease;
            height: auto;
            line-height: 1.6;
        }

        .contact-form-wrap input {
            height: 46px;
        }

        .contact-form-wrap textarea {
            min-height: 120px;
            resize: vertical;
        }

        .contact-form-wrap input:focus,
        .contact-form-wrap textarea:focus {
            outline: none;
            border-color: var(--color-primary);
            box-shadow: 0 0 0 4px rgba(23, 101, 184, 0.1);
        }

        .form-tip {
            font-size: 13px;
            color: var(--color-weak);
            margin-top: 14px;
            line-height: 1.7;
        }

        .site-footer {
            background-color: #FFFFFF;
            border-top: 1px solid var(--color-border);
            padding: 62px 0 0;
            margin-top: 20px;
        }

        .footer-cols {
            display: grid;
            grid-template-columns: 1.7fr 1fr 1fr 1.2fr;
            gap: 44px;
            padding-bottom: 44px;
        }

        .footer-brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .footer-brand .brand-text {
            font-size: 19px;
            flex-direction: row;
            align-items: baseline;
            font-weight: 800;
        }

        .footer-desc {
            max-width: 330px;
            font-size: 14px;
            line-height: 1.8;
            color: #5B748A;
        }

        .footer-title {
            font-size: 16px;
            font-weight: 800;
            color: var(--color-title);
            margin-bottom: 16px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            color: #5B748A;
            font-size: 14px;
        }

        .footer-links a:hover {
            color: var(--color-primary);
        }

        .footer-info-text p {
            color: #5B748A;
            font-size: 14px;
            margin-bottom: 8px;
            line-height: 1.7;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            padding: 22px 0;
            border-top: 1px solid #EDF2F8;
            color: var(--color-weak);
            font-size: 14px;
        }

        .footer-bottom a {
            color: var(--color-weak);
        }

        .footer-bottom a:hover {
            color: var(--color-primary);
        }

        @media (max-width: 1023.98px) {
            .nav-toggle-btn {
                display: inline-flex;
            }

            .site-nav {
                position: absolute;
                top: 72px;
                left: 0;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                display: none;
                background: #FFFFFF;
                border-top: 1px solid var(--color-border);
                border-bottom: 1px solid var(--color-border);
                box-shadow: 0 18px 30px rgba(19, 53, 82, 0.12);
                padding: 12px 24px 24px;
            }

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

            .site-menu {
                flex-direction: column;
                align-items: flex-start;
                width: 100%;
                gap: 0;
            }

            .site-menu li,
            .site-menu li a {
                width: 100%;
            }

            .site-menu a {
                padding: 14px 10px;
                border-bottom: 1px solid #EDF2F8;
                border-radius: 0;
            }

            .site-menu li:last-child a {
                border-bottom: 0;
            }

            .site-menu .current a::after {
                left: 10px;
                right: auto;
                bottom: 6px;
                width: 24px;
                height: 3px;
            }

            .nav-extra {
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                gap: 12px;
                margin-top: 16px;
            }

            .search-box {
                width: 100%;
                height: 44px;
            }

            .nav-cta {
                height: 44px;
                border-radius: var(--radius-md);
                justify-content: center;
            }

            .category-hero__inner {
                flex-direction: column;
                gap: 36px;
            }

            .category-hero__content,
            .category-hero__visual {
                flex: none;
                max-width: 100%;
                width: 100%;
            }

            .category-hero__visual img {
                aspect-ratio: 16 / 9;
                max-height: 360px;
            }

            .footer-cols {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
        }

        @media (max-width: 767.98px) {
            .hero-actions .btn {
                width: 100%;
            }

            .feature-col,
            .guide-card-wrap {
                width: 100%;
            }

            .feature-card {
                padding: 26px 22px;
            }

            .step-item {
                padding: 24px 18px;
            }

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

            .contact-info,
            .contact-form-wrap {
                padding: 30px 24px;
            }

            .helper-copy {
                padding-left: 0;
                margin-top: 28px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 520px) {
            .grid-container {
                padding-right: 16px;
                padding-left: 16px;
            }

            .site-header-inner {
                gap: 12px;
            }

            .brand-text {
                font-size: 18px;
            }

            .brand-text small {
                font-size: 11px;
            }

            .category-hero h1 {
                font-size: 30px;
            }

            .category-hero p {
                font-size: 15px;
            }

            .faq-accordion .accordion-title {
                font-size: 16px;
                padding: 18px 48px 18px 18px;
            }

            .faq-accordion .accordion-content {
                padding: 0 16px 18px;
            }

            .faq-accordion .accordion-content p {
                padding: 12px 14px;
            }

            .site-nav {
                padding-right: 16px;
                padding-left: 16px;
            }

            .btn {
                font-size: 14px;
                padding: 13px 18px;
            }
        }

/* roulang page: category3 */
:root{
  --primary:#1765B8;
  --primary-dark:#14579E;
  --primary-deep:#0F3F7A;
  --accent:#0FA3A0;
  --accent-soft:#E7F6F6;
  --orange:#E67E22;
  --orange-dark:#CF6C14;
  --page-bg:#F5F8FC;
  --card-bg:#FFFFFF;
  --heading-color:#122B3F;
  --text-color:#35536B;
  --muted-text:#7790A4;
  --line-color:#DCE7F2;
  --line-deep:#C7D6E4;
  --shadow-soft:0 6px 20px rgba(23,101,184,.08);
  --shadow-hover:0 12px 30px rgba(23,101,184,.13);
  --focus-ring:0 0 0 4px rgba(15,163,160,.28);
  --radius-lg:16px;
  --radius-md:10px;
  --radius-pill:999px;
  --font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei UI","Noto Sans CJK SC","Source Han Sans SC",sans-serif;
  --container-width:1200px;
  --header-height:72px;
  --space-section:clamp(4rem,8vw,7rem);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-family);
  font-size:16px;
  line-height:1.8;
  color:var(--text-color);
  background-color:var(--page-bg);
  -webkit-font-smoothing:antialiased;
}
.grid-container{
  max-width:var(--container-width) !important;
  margin-left:auto;
  margin-right:auto;
  padding-left:24px;
  padding-right:24px;
}
a{color:var(--primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--primary-dark)}
img{max-width:100%;display:inline-block;vertical-align:middle}
p,h1,h2,h3,h4,h5,h6{
  margin:0 0 1em;
}
h1,h2,h3,h4,h5,h6{
  font-weight:800;
  color:var(--heading-color);
  line-height:1.35;
}
input,textarea,select,button{
  font-family:inherit;
  font-size:1rem;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:0 24px;
  border:0;
  border-radius:10px;
  font-weight:700;
  font-size:15px;
  line-height:1;
  cursor:pointer;
  transition:background-color .2s ease,border-color .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease;
  text-align:center;
}
.btn i{font-size:14px}
.btn-primary{
  background-color:var(--primary);
  color:#fff;
}
.btn-primary:hover{
  background-color:var(--primary-dark);
  color:#fff;
  transform:translateY(-1px);
  box-shadow:var(--shadow-soft);
}
.btn-outline{
  background:transparent;
  color:var(--primary);
  border:1.5px solid var(--primary);
}
.btn-outline:hover{
  background:#F0F6FC;
  color:var(--primary-dark);
  border-color:var(--primary-dark);
}
.btn-orange{
  background-color:var(--orange);
  color:#fff;
}
.btn-orange:hover{
  background-color:var(--orange-dark);
  color:#fff;
  transform:translateY(-1px);
}
.btn-sm{
  min-height:40px;
  padding:0 17px;
  font-size:14px;
  border-radius:10px;
}
.btn:focus-visible,
.site-menu a:focus-visible,
.search-box input:focus-visible,
.form-control:focus-visible,
.footer-links a:focus-visible{
  outline:none;
  box-shadow:var(--focus-ring);
}

/*----------------- Header 导航 ----------------*/
.site-header{
  background:rgba(255,255,255,.98);
  border-bottom:1px solid #E2EBF3;
  box-shadow:0 2px 10px rgba(19,53,82,.04);
  padding:0;
  position:sticky;
  top:0;
  z-index:100;
}
.site-header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:var(--header-height);
  flex-wrap:wrap;
  padding-top:0;
  padding-bottom:0;
}
.brand{
  display:flex;
  align-items:center;
  flex-shrink:0;
}
.brand-link{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-weight:800;
  color:var(--heading-color);
}
.brand-mark{
  display:flex;
  align-items:center;
  justify-content:center;
  width:36px;
  height:36px;
  border-radius:12px;
  background:linear-gradient(145deg,#1B6FC4,var(--primary-dark));
  color:#fff;
  font-size:12px;
  letter-spacing:.4px;
  font-weight:900;
  box-shadow:0 6px 14px rgba(23,101,184,.25);
  flex-shrink:0;
}
.brand-text{
  display:flex;
  flex-direction:column;
  line-height:1.15;
  font-size:20px;
  font-weight:800;
  color:var(--heading-color);
}
.brand-text small{
  font-size:11px;
  color:var(--muted-text);
  font-weight:500;
  letter-spacing:.4px;
  margin-top:2px;
}
.site-nav{
  display:flex;
  align-items:center;
  flex:1 1 auto;
  justify-content:space-between;
  gap:24px;
}
.site-menu{
  display:flex;
  list-style:none;
  margin:0;
  padding:0;
  gap:6px;
  align-items:center;
}
.site-menu li{
  margin:0;
  position:relative;
}
.site-menu a{
  display:block;
  padding:10px 14px;
  font-size:15px;
  font-weight:600;
  color:var(--text-color);
  border-radius:8px;
  transition:color .2s ease,background-color .2s ease;
  white-space:nowrap;
}
.site-menu a:hover{
  color:var(--primary);
  background:rgba(23,101,184,.05);
}
.site-menu li.current a{
  color:var(--primary);
}
.site-menu li.current::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:-8px;
  height:3px;
  border-radius:999px;
  background:var(--primary);
}
.nav-extra{
  display:flex;
  align-items:center;
  gap:14px;
}
.search-box{
  display:flex;
  align-items:center;
  gap:8px;
  background:#F5F8FC;
  border:1px solid var(--line-color);
  border-radius:999px;
  padding:0 14px;
  height:40px;
  width:220px;
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.search-box:focus-within{
  border-color:var(--primary);
  box-shadow:var(--focus-ring);
  background:#fff;
}
.search-box i{
  color:var(--muted-text);
  font-size:14px;
  flex-shrink:0;
}
.search-box input{
  width:100%;
  border:0;
  outline:0;
  background:transparent;
  color:var(--heading-color);
  font-size:14px;
}
.search-box input::placeholder{
  color:#A1B4C5;
}
.nav-cta{
  flex-shrink:0;
}
.nav-toggle-btn{
  display:none;
  width:42px;
  height:42px;
  align-items:center;
  justify-content:center;
  background:#fff;
  border:1px solid var(--line-color);
  border-radius:10px;
  color:var(--primary);
  font-size:18px;
  cursor:pointer;
}
.nav-toggle-btn:hover{
  background:var(--page-bg);
}
.nav-toggle-btn:focus-visible{
  outline:none;
  box-shadow:var(--focus-ring);
}
body[data-nav-open="1"] .site-nav{
  display:flex !important;
}

/*----------------- Section 通用 ----------------*/
.section{
  padding:var(--space-section) 0;
}
.section-light{
  background:#fff;
}
.section-soft{
  background:linear-gradient(180deg,#FFFFFF 0%,#EAF2F9 100%);
}
.section-head{
  max-width:760px;
  margin:0 auto 48px;
  text-align:center;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  background:#EAF2FA;
  color:var(--primary);
  border-radius:999px;
  padding:6px 14px;
  font-size:13px;
  font-weight:700;
  margin-bottom:18px;
}
.eyebrow i{
  font-size:12px;
}
.section-title{
  font-size:clamp(28px,3.6vw,40px);
  margin-bottom:14px;
}
.section-intro{
  font-size:16px;
  color:var(--text-color);
  max-width:680px;
  margin:0 auto;
}

/*----------------- 栏目头 Hero ----------------*/
.category-hero{
  padding:64px 0;
  background:
    radial-gradient(circle at 85% 25%,rgba(23,101,184,.10),transparent 24%),
    linear-gradient(180deg,#FFFFFF 0%,#EAF2F9 100%);
  border-bottom:1px solid var(--line-color);
}
.category-hero .hero-layout{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:48px;
  align-items:center;
}
.category-breadcrumb{
  font-size:13px;
  color:var(--muted-text);
  margin-bottom:18px;
  display:flex;
  flex-wrap:wrap;
  gap:6px;
}
.category-breadcrumb a{
  color:var(--muted-text);
  font-weight:500;
}
.category-breadcrumb a:hover{
  color:var(--primary);
}
.category-hero h1{
  font-size:clamp(38px,4.6vw,56px);
  line-height:1.2;
  margin-bottom:14px;
  color:var(--heading-color);
}
.category-hero .hero-subline{
  font-size:18px;
  color:var(--muted-text);
  margin-bottom:22px;
  max-width:46ch;
}
.category-hero .hero-button-group{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
}
.hero-note{
  display:inline-flex;
  align-items:center;
  gap:7px;
  margin-top:22px;
  color:var(--muted-text);
  font-size:13px;
}
.hero-note i{
  color:var(--accent);
}
.hero-media{
  background:#fff;
  border-radius:22px;
  border:1px solid var(--line-color);
  box-shadow:var(--shadow-hover);
  padding:12px;
  transform:rotate(1deg);
}
.hero-media img{
  border-radius:16px;
  width:100%;
  height:auto;
  object-fit:cover;
  display:block;
}

/*----------------- 内容卡片 ----------------*/
.dynamic-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:26px;
  margin-top:26px;
}
.info-card{
  position:relative;
  background:#fff;
  border:1px solid var(--line-color);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-soft);
  overflow:hidden;
  transition:box-shadow .3s ease,transform .3s ease;
  display:flex;
  flex-direction:column;
}
.info-card:hover{
  box-shadow:var(--shadow-hover);
  transform:translateY(-2px);
}
.card-thumb{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:#EAF2F9;
}
.card-thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .35s ease;
}
.info-card:hover .card-thumb img{
  transform:scale(1.03);
}
.thumb-tag{
  position:absolute;
  top:14px;
  left:14px;
  z-index:2;
  background:rgba(255,255,255,.92);
  border:1px solid rgba(220,231,242,.75);
  color:var(--primary);
  border-radius:999px;
  padding:5px 12px;
  font-size:12px;
  font-weight:700;
  backdrop-filter:none;
  box-shadow:0 4px 10px rgba(18,43,63,.08);
}
.card-body{
  padding:22px 22px 24px;
  display:flex;
  flex-direction:column;
  flex:1;
}
.card-body h3{
  font-size:19px;
  line-height:1.5;
  margin-bottom:10px;
  color:var(--heading-color);
}
.card-body h3 a{
  color:var(--heading-color);
}
.card-body h3 a:hover{
  color:var(--primary);
}
.card-body p{
  font-size:14px;
  line-height:1.75;
  color:var(--text-color);
  margin-bottom:16px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  flex:1;
}
.card-meta{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:var(--muted-text);
  margin-bottom:16px;
}
.card-meta span{
  display:inline-flex;
  align-items:center;
  gap:5px;
}
.card-meta i{
  font-size:11px;
  color:var(--accent);
}
.card-link{
  font-size:14px;
  font-weight:700;
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.card-link i{
  font-size:12px;
  transition:transform .2s ease;
}
.card-link:hover i{
  transform:translateX(4px);
}

/*----------------- 图文说明区 ----------------*/
.info-highlight{
  background:#fff;
  padding:var(--space-section) 0;
  border-bottom:1px solid var(--line-color);
}
.info-highlight .highlight-layout{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
}
.highlight-image{
  background:#EAF2F9;
  border-radius:20px;
  overflow:hidden;
  box-shadow:var(--shadow-soft);
  border:1px solid var(--line-color);
  line-height:0;
}
.highlight-image img{
  width:100%;
  height:100%;
  object-fit:cover;
  aspect-ratio:4/3;
}
.highlight-content h2{
  font-size:clamp(26px,2.8vw,34px);
  margin-bottom:18px;
}
.highlight-content > p{
  margin-bottom:22px;
}
.advantage-list{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  grid-template-columns:1fr;
  gap:14px;
}
.advantage-list li{
  display:flex;
  gap:12px;
  background:#F5F8FC;
  border:1px solid var(--line-color);
  padding:16px 18px;
  border-radius:14px;
  align-items:flex-start;
  transition:box-shadow .25s ease,transform .25s ease;
}
.advantage-list li:hover{
  box-shadow:var(--shadow-soft);
  transform:translateX(2px);
}
.advantage-list .numer{
  flex-shrink:0;
  width:34px;
  height:34px;
  border-radius:10px;
  background:#EAF2FA;
  color:var(--primary);
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight:800;
  font-size:14px;
}
.advantage-list strong{
  display:block;
  color:var(--heading-color);
  font-size:16px;
  margin-bottom:2px;
}
.advantage-list small{
  color:var(--muted-text);
  font-size:14px;
  line-height:1.7;
  display:block;
}

/*----------------- 流程步骤 ----------------*/
.process-section{
  padding:var(--space-section) 0;
  background:linear-gradient(180deg,var(--page-bg) 0%,#EAF3FA 100%);
}
.process-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
  margin-top:44px;
}
.process-item{
  position:relative;
  background:#fff;
  border:1px solid var(--line-color);
  border-radius:18px;
  padding:28px 22px 24px;
  box-shadow:var(--shadow-soft);
  text-align:center;
  transition:box-shadow .3s ease,transform .3s ease;
}
.process-item:hover{
  box-shadow:var(--shadow-hover);
  transform:translateY(-3px);
}
.process-step-num{
  display:flex;
  justify-content:center;
  font-size:42px;
  font-weight:900;
  line-height:1;
  color:rgba(23,101,184,.14);
  margin-bottom:8px;
  letter-spacing:-1px;
}
.process-item h3{
  font-size:18px;
  margin-bottom:10px;
}
.process-item p{
  font-size:14px;
  color:var(--muted-text);
  margin:0;
}
.process-arrow{
  position:absolute;
  top:44px;
  right:-18px;
  z-index:2;
  color:var(--accent);
  font-size:16px;
  opacity:.9;
}

/*----------------- FAQ ----------------*/
.faq-wrap{
  background:#fff;
  padding:var(--space-section) 0;
}
.faq-list{
  max-width:800px;
  margin:0 auto;
}
.accordion-item{
  background:#F9FBFD;
  margin-bottom:12px !important;
  border:1px solid var(--line-color);
  border-radius:14px;
  overflow:hidden;
  padding:0 !important;
  box-shadow:0 3px 12px rgba(23,101,184,.04);
}
.accordion-title{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  background:#F9FBFD !important;
  color:var(--heading-color) !important;
  font-size:16px !important;
  font-weight:700;
  line-height:1.4;
  padding:20px 24px !important;
  border:0 !important;
  margin:0 !important;
  transition:background-color .25s ease,color .25s ease;
}
.accordion-title:hover{
  background:rgba(23,101,184,.045) !important;
  color:var(--primary) !important;
}
.accordion-title::before{
  content:"" !important;
}
.accordion-title::after{
  content:"+" !important;
  width:26px;
  height:26px;
  display:flex;
  align-items:center;
  justify-content:center;
  flex-shrink:0;
  border-radius:50%;
  background:#EAF2FA;
  color:var(--primary);
  font-size:18px;
  font-weight:800;
  line-height:1;
}
.accordion-item.is-active > .accordion-title{
  border-left:4px solid var(--primary) !important;
  border-radius:14px 0 0 0;
  background:#F3F8FD !important;
  color:var(--primary-dark) !important;
}
.accordion-item.is-active > .accordion-title::after{
  content:"−" !important;
  background:var(--primary);
  color:#fff;
}
.accordion-content{
  border:0 !important;
  background:#fff !important;
  border-bottom:1px solid var(--line-color) !important;
  color:var(--text-color);
  font-size:15px;
  line-height:1.9;
  padding:4px 24px 22px !important;
}

/*----------------- 咨询表单 ----------------*/
.consult-section{
  padding:var(--space-section) 0;
}
.consult-card{
  background:#fff;
  border:1px solid var(--line-color);
  border-radius:20px;
  box-shadow:var(--shadow-soft);
  max-width:940px;
  margin:0 auto;
  padding:44px;
}
.consult-layout{
  display:grid;
  grid-template-columns:.9fr 1.1fr;
  gap:48px;
}
.consult-info h2{
  font-size:30px;
  margin-bottom:16px;
}
.consult-info p{
  color:var(--muted-text);
  margin-bottom:20px;
}
.consult-note{
  background:#F0F6FC;
  border-left:3px solid var(--primary);
  border-radius:0 12px 12px 0;
  padding:14px 18px;
  color:var(--text-color);
  font-size:14px;
}
.consult-form .form-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:0 20px;
}
.form-group{
  margin-bottom:18px;
}
.form-group label{
  display:block;
  font-size:14px;
  font-weight:700;
  color:var(--heading-color);
  margin-bottom:8px;
}
.form-control{
  display:block;
  width:100%;
  min-height:44px;
  border:1px solid var(--line-deep);
  border-radius:10px;
  background:#F9FBFD;
  color:var(--heading-color);
  padding:10px 14px;
  font-size:15px;
  outline:0;
  transition:background-color .2s ease,border-color .2s ease,box-shadow .2s ease;
}
textarea.form-control{
  min-height:96px;
  resize:vertical;
}
.form-control:focus{
  background:#fff;
  border-color:var(--primary);
  box-shadow:0 0 0 4px rgba(23,101,184,.1);
}

/*----------------- 页脚 ----------------*/
.site-footer{
  background:#F0F5FA;
  border-top:1px solid var(--line-color);
  padding:52px 0 26px;
  color:var(--text-color);
  font-size:15px;
}
.footer-cols{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.1fr;
  gap:44px;
  margin-bottom:30px;
}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-weight:800;
  color:var(--heading-color);
  font-size:18px;
  margin-bottom:12px;
}
.footer-desc{
  font-size:14px;
  color:var(--text-color);
  line-height:1.9;
  max-width:36em;
  margin-bottom:0;
}
.footer-title{
  font-size:16px;
  font-weight:800;
  color:var(--heading-color);
  margin-bottom:14px;
}
.footer-links{
  display:flex;
  flex-direction:column;
  gap:10px;
}
.footer-links a{
  color:var(--text-color);
  font-size:14px;
  line-height:1.4;
}
.footer-links a:hover{
  color:var(--primary);
}
.footer-info-text{
  font-size:14px;
  color:var(--muted-text);
  display:flex;
  flex-direction:column;
  gap:8px;
}
.footer-info-text p{
  margin:0;
}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  border-top:1px solid var(--line-color);
  padding-top:22px;
  font-size:13px;
  color:var(--muted-text);
}
.footer-bottom a{
  color:var(--muted-text);
}
.footer-bottom a:hover{
  color:var(--primary);
}

/*----------------- 响应式 ----------------*/
@media (max-width:1080px){
  .site-header-inner{
    flex-wrap:nowrap;
  }
  .nav-cta .btn-text{
    display:none;
  }
  .site-menu a{
    padding:10px 10px;
    font-size:14px;
  }
  .search-box{
    width:150px;
  }
}
@media (max-width:1023px){
  .site-header-inner{
    flex-wrap:wrap;
    min-height:64px;
    padding-top:10px;
    padding-bottom:10px;
    position:relative;
  }
  .nav-toggle-btn{
    display:inline-flex;
  }
  .site-nav{
    display:none;
    position:absolute;
    left:0;
    right:0;
    top:100%;
    background:#fff;
    width:100%;
    border-bottom:1px solid var(--line-color);
    box-shadow:0 18px 32px rgba(18,43,63,.10);
    flex-direction:column;
    padding:18px 24px 24px;
    align-items:stretch;
  }
  .site-nav.nav-open{
    display:flex;
  }
  .site-menu{
    flex-direction:column;
    align-items:stretch;
    width:100%;
    gap:0;
  }
  .site-menu li{
    border-bottom:1px solid #EDF2F7;
  }
  .site-menu li:last-child{
    border-bottom:none;
  }
  .site-menu a{
    width:100%;
    padding:14px 8px;
    font-size:16px;
    font-weight:600;
  }
  .site-menu li.current::after{
    display:none;
  }
  .site-menu li.current a{
    color:var(--primary);
    background:rgba(23,101,184,.05);
  }
  .nav-extra{
    width:100%;
    padding-top:10px;
    justify-content:space-between;
  }
  .search-box{
    width:100%;
  }
  .nav-cta .btn-text{
    display:inline;
  }
  .category-hero .hero-layout{
    grid-template-columns:1fr;
  }
  .category-hero h1{
    font-size:38px;
  }
  .dynamic-grid{
    grid-template-columns:repeat(2,1fr);
  }
  .info-highlight .highlight-layout{
    grid-template-columns:1fr;
    gap:32px;
  }
  .process-grid{
    grid-template-columns:repeat(2,1fr);
    gap:16px;
  }
  .process-arrow{
    display:none;
  }
  .consult-layout{
    grid-template-columns:1fr;
    gap:28px;
  }
  .footer-cols{
    grid-template-columns:1fr 1fr;
    gap:32px;
  }
  .hero-media{
    max-width:520px;
  }
}
@media (max-width:767px){
  .grid-container{
    padding-left:18px;
    padding-right:18px;
  }
  .category-hero{
    padding:44px 0 36px;
  }
  .category-hero h1{
    font-size:34px;
  }
  .category-hero .hero-subline{
    font-size:16px;
  }
  .dynamic-grid{
    grid-template-columns:1fr;
    gap:18px;
  }
  .section{
    padding:3.4rem 0;
  }
  .section-title{
    font-size:28px;
  }
  .process-grid{
    grid-template-columns:1fr;
    gap:14px;
  }
  .process-item{
    text-align:left;
    display:flex;
    gap:14px;
    padding:20px;
    align-items:center;
  }
  .process-step-num{
    margin:0 0 0 0;
    font-size:34px;
    width:48px;
    flex-shrink:0;
  }
  .process-item h3{
    margin-bottom:4px;
    font-size:17px;
  }
  .process-item p{
    font-size:14px;
  }
  .consult-card{
    padding:28px 20px;
  }
  .consult-form .form-grid{
    grid-template-columns:1fr;
  }
  .footer-cols{
    grid-template-columns:1fr;
    gap:26px;
  }
  .footer-bottom{
    flex-direction:column;
    align-items:flex-start;
  }
  .nav-cta .btn-text{
    display:inline;
  }
}
@media (max-width:520px){
  body{
    font-size:15px;
  }
  .brand-text{
    font-size:18px;
  }
  .category-hero .hero-button-group .btn{
    width:100%;
  }
}

/* roulang page: category4 */
:root {
    --blue: #1765B8;
    --blue-dark: #14579E;
    --deep: #122B3F;
    --text: #35536B;
    --mut: #7790A4;
    --teal: #0FA3A0;
    --orange: #E67E22;
    --orange-dark: #CF6C14;
    --bg: #F5F8FC;
    --card: #FFFFFF;
    --line: #DCE7F2;
    --line-deep: #C7D6E4;
    --radius-card: 16px;
    --radius-input: 10px;
    --shadow: 0 6px 20px rgba(23, 101, 184, 0.08);
    --shadow-hover: 0 12px 30px rgba(23, 101, 184, 0.13);
    --font: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei UI", "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
    --space: clamp(4rem, 8vw, 7rem);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.8;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
}

body.no-scroll {
    overflow: hidden;
}

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

a {
    color: var(--blue);
    text-decoration: none;
    transition: color .2s ease;
}

ul,
ol {
    margin: 0;
    padding: 0;
}

h1,
h2,
h3,
h4,
p {
    margin-top: 0;
}

button,
input,
select,
textarea {
    font-family: inherit;
}

.grid-container {
    max-width: 1200px;
}

.site-header {
    position: relative;
    z-index: 100;
    background: #FFF;
    border-bottom: 1px solid #E2EBF3;
    box-shadow: 0 2px 10px rgba(19, 53, 82, 0.04);
}

.site-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 72px;
    gap: 1rem;
}

.brand {
    flex: 0 0 auto;
}

.brand-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: var(--blue);
    color: #FFF;
    font-weight: 800;
    font-size: 13px;
    letter-spacing: 0.02em;
    box-shadow: 0 6px 14px rgba(23, 101, 184, 0.22);
}

.brand-text {
    display: inline-flex;
    flex-direction: column;
    color: var(--deep);
    font-weight: 800;
    font-size: 19px;
    line-height: 1.2;
    letter-spacing: 0.01em;
}

.brand-text small {
    display: block;
    margin-top: 2px;
    color: var(--mut);
    font-size: 12px;
    font-weight: 500;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 1.75rem;
}

.site-menu {
    display: flex;
    align-items: center;
    gap: 0.1rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.site-menu li {
    position: relative;
}

.site-menu li.current a {
    color: var(--blue);
}

.site-menu li.current::after {
    content: "";
    position: absolute;
    left: 14px;
    right: 14px;
    bottom: -2px;
    height: 3px;
    border-radius: 999px;
    background: var(--blue);
}

.site-menu a {
    display: block;
    padding: 12px 14px;
    color: var(--deep);
    font-size: 15px;
    font-weight: 600;
    line-height: 1.4;
    white-space: nowrap;
}

.site-menu a:hover,
.site-menu a:focus-visible {
    color: var(--blue);
    outline: none;
}

.nav-extra {
    display: flex;
    align-items: center;
    gap: 0.85rem;
}

.search-box {
    position: relative;
    display: flex;
    align-items: center;
}

.search-box i {
    position: absolute;
    left: 13px;
    color: var(--mut);
    font-size: 14px;
    pointer-events: none;
}

.search-box input {
    width: 180px;
    height: 38px;
    padding: 0 14px 0 38px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: #F7FAFD;
    font-size: 14px;
    color: var(--deep);
    transition: border-color .2s ease, box-shadow .2s ease, background .2s ease;
}

.search-box input::placeholder {
    color: #A6B8C8;
}

.search-box input:focus {
    border-color: var(--blue);
    outline: none;
    background: #FFF;
    box-shadow: 0 0 0 4px rgba(23, 101, 184, 0.1);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    min-height: 46px;
    padding: 0.65rem 1.4rem;
    border: 1.5px solid transparent;
    border-radius: var(--radius-input);
    font-size: 15px;
    font-weight: 700;
    line-height: 1.4;
    cursor: pointer;
    transition: background .22s ease, box-shadow .22s ease, border-color .22s ease, color .22s ease, transform .22s ease;
}

.btn:focus-visible {
    outline: 3px solid rgba(15, 163, 160, 0.35);
    outline-offset: 1px;
}

.btn-primary {
    background: var(--blue);
    color: #FFF;
}

.btn-primary:hover,
.btn-primary:active {
    background: var(--blue-dark);
    color: #FFF;
}

.btn-secondary {
    background: transparent;
    border-color: var(--blue);
    color: var(--blue);
}

.btn-secondary:hover,
.btn-secondary:active {
    background: #F0F6FC;
    color: var(--blue-dark);
    border-color: var(--blue-dark);
}

.btn-orange {
    background: var(--orange);
    color: #FFF;
}

.btn-orange:hover,
.btn-orange:active {
    background: var(--orange-dark);
    color: #FFF;
}

.btn-sm {
    min-height: 38px;
    padding: 0.45rem 1rem;
    font-size: 14px;
}

.nav-toggle-btn {
    display: none;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: #F7FAFD;
    color: var(--deep);
    font-size: 18px;
    cursor: pointer;
}

.nav-toggle-btn:focus-visible {
    outline: 3px solid rgba(15, 163, 160, 0.35);
}

.sec {
    padding: var(--space) 0;
}

.section-head {
    max-width: 780px;
    margin-bottom: clamp(2rem, 4vw, 3.2rem);
}

.section-head.center {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

.section-head h2 {
    margin-bottom: 0.55rem;
    color: var(--deep);
    font-size: clamp(1.6rem, 2.8vw, 2.2rem);
    line-height: 1.4;
    font-weight: 800;
}

.section-head p {
    margin-bottom: 0;
    color: var(--mut);
    font-size: 16px;
}

.category-hero {
    background: linear-gradient(120deg, #FFFFFF 0%, #EAF2F9 100%);
    border-bottom: 1px solid #E2EBF3;
}

.category-hero-inner {
    padding: clamp(3rem, 6vw, 5.5rem) 0 0;
    align-items: center;
}

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.3rem 0.95rem;
    border-radius: 999px;
    background: #EAF2FA;
    color: var(--blue);
    font-size: 14px;
    font-weight: 700;
}

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

.category-hero h1 {
    margin: 1rem 0 0.9rem;
    color: var(--deep);
    font-size: clamp(2.2rem, 5vw, 3.4rem);
    font-weight: 800;
    line-height: 1.22;
    letter-spacing: 0.01em;
}

.hero-desc {
    max-width: 560px;
    margin-bottom: 1.8rem;
    color: var(--text);
    font-size: 17px;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.9rem;
}

.hero-visual {
    position: relative;
}

.hero-visual::before {
    content: "";
    position: absolute;
    inset: auto -16px -16px auto;
    width: 72%;
    height: 72%;
    border-radius: 24px;
    background: rgba(23, 101, 184, 0.08);
}

.hero-photo {
    position: relative;
    z-index: 1;
    overflow: hidden;
    margin-bottom: 2rem;
    border: 1px solid var(--line);
    border-radius: 24px;
    box-shadow: var(--shadow);
    background: #FFF;
}

.hero-photo img {
    width: 100%;
    height: 100%;
    min-height: 250px;
    object-fit: cover;
}

.problem-cards {
    background: var(--bg);
}

.step-card,
.type-card {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.type-card {
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    background: var(--card);
    box-shadow: var(--shadow);
    transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
}

.type-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
    border-color: #C3D7EA;
}

.card-photo {
    position: relative;
    height: 180px;
    overflow: hidden;
    background: #EAF2FA;
}

.card-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.type-card:hover .card-photo img {
    transform: scale(1.02);
}

.type-card .card-photo .tag {
    position: absolute;
    left: 14px;
    top: 14px;
    z-index: 2;
    border: 1px solid rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.92);
    color: var(--blue);
}

.card-body {
    display: flex;
    flex: 1;
    flex-direction: column;
    padding: 1.4rem 1.5rem 1.6rem;
}

.card-body h3 {
    margin-bottom: 0.55rem;
    color: var(--deep);
    font-size: 1.12rem;
    line-height: 1.5;
    font-weight: 800;
}

.card-body p {
    margin-bottom: 1.1rem;
    color: var(--text);
    font-size: 14.5px;
    line-height: 1.75;
}

.card-link {
    margin-top: auto;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--blue);
    font-size: 14px;
    font-weight: 700;
}

.card-link i {
    transition: transform .2s ease;
}

.card-link:hover i {
    transform: translateX(4px);
}

.tag {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.15rem 0.7rem;
    border-radius: 999px;
    background: #EAF2FA;
    color: var(--blue);
    font-size: 13px;
    font-weight: 700;
    line-height: 1.7;
}

.workflow-section {
    background: #FFF;
    border-top: 1px solid #EAF1F7;
}

.workflow-step {
    position: relative;
    height: 100%;
    padding: 1.8rem 1.4rem 1.4rem;
}

.step-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 46px;
    height: 46px;
    margin-bottom: 1rem;
    border-radius: 14px;
    background: var(--blue);
    color: #FFF;
    font-size: 20px;
    font-weight: 800;
    box-shadow: 0 8px 18px rgba(23, 101, 184, 0.22);
}

.workflow-step h3 {
    margin-bottom: 0.45rem;
    color: var(--deep);
    font-size: 1.05rem;
    font-weight: 800;
}

.workflow-step p {
    margin-bottom: 0;
    color: var(--text);
    font-size: 14.5px;
    line-height: 1.75;
}

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

.checklist-panel {
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 24px;
    background: #FFF;
    box-shadow: var(--shadow);
}

.checklist-media {
    min-height: 280px;
    background: #EAF2FA;
}

.checklist-media img {
    width: 100%;
    height: 100%;
    min-height: 280px;
    object-fit: cover;
}

.checklist-body {
    padding: clamp(1.5rem, 3vw, 2.8rem);
}

.checklist-body h2 {
    margin-bottom: 0.6rem;
    color: var(--deep);
    font-size: clamp(1.6rem, 2.5vw, 2.1rem);
    font-weight: 800;
}

.checklist-body > p {
    margin-bottom: 1.3rem;
    color: var(--mut);
}

.check-list {
    list-style: none;
    margin: 0 0 1.5rem;
    padding: 0;
}

.check-list li {
    position: relative;
    padding: 0.6rem 0 0.6rem 2.4rem;
    color: var(--text);
    font-size: 15px;
}

.check-list li i {
    position: absolute;
    left: 0;
    top: 0.8rem;
    color: var(--teal);
    font-size: 15px;
}

.faq-section {
    background: #FFF;
    border-top: 1px solid #EAF1F7;
}

.faq-wrap {
    max-width: 900px;
    margin: 0 auto;
}

.accordion {
    background: transparent;
    margin-top: 0;
    border: 0;
}

.accordion-item {
    margin-bottom: 1rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    background: var(--card);
    overflow: hidden;
    transition: box-shadow .22s ease, border-color .22s ease;
}

.accordion-item:hover {
    border-color: #C3D7EA;
}

.accordion-item.is-active {
    border-left: 3px solid var(--blue);
    box-shadow: 0 6px 16px rgba(23, 101, 184, 0.07);
}

.accordion-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.1rem 1.35rem;
    background: #FFF;
    color: var(--deep) !important;
    font-size: 1.02rem;
    font-weight: 700;
    line-height: 1.6;
    border-bottom: 1px solid transparent;
}

.accordion-title:hover,
.accordion-title:focus-visible {
    background: #F8FBFE;
    color: var(--blue) !important;
    outline: none;
}

.accordion-title .acc-icon {
    position: relative;
    display: inline-block;
    width: 22px;
    height: 22px;
    flex: 0 0 22px;
}

.accordion-title .acc-icon::before,
.accordion-title .acc-icon::after {
    content: "";
    position: absolute;
    background: var(--blue);
    border-radius: 3px;
    transition: transform .25s ease;
}

.accordion-title .acc-icon::before {
    left: 0;
    right: 0;
    top: 10px;
    height: 2px;
}

.accordion-title .acc-icon::after {
    top: 0;
    bottom: 0;
    left: 10px;
    width: 2px;
}

.accordion-item.is-active .accordion-title {
    border-bottom-color: var(--line);
}

.accordion-item.is-active .accordion-title .acc-icon::after {
    transform: scaleY(0);
}

.accordion-content {
    padding: 0 1.5rem 1.3rem;
    color: var(--text);
    font-size: 15px;
    line-height: 1.85;
    background: var(--card);
}

.accordion-content p:last-child {
    margin-bottom: 0;
}

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

.contact-panel {
    border: 1px solid var(--line);
    border-radius: 24px;
    background: var(--card);
    box-shadow: 0 10px 30px rgba(23, 101, 184, 0.06);
    overflow: hidden;
}

.contact-grid {
    align-items: stretch;
}

.contact-intro {
    position: relative;
    padding: clamp(1.6rem, 3vw, 2.6rem);
    background: linear-gradient(135deg, #FFFFFF 0%, #EDF5FB 100%);
}

.contact-intro h2 {
    margin: 0.8rem 0 0.8rem;
    color: var(--deep);
    font-size: clamp(1.5rem, 2.5vw, 2rem);
    font-weight: 800;
}

.contact-intro p {
    margin-bottom: 1.5rem;
    color: var(--text);
}

.contact-point-list {
    list-style: none;
    margin: 1.4rem 0 0;
    padding: 0;
}

.contact-point-list li {
    position: relative;
    padding: 0.45rem 0 0.45rem 2rem;
    color: var(--text);
    font-size: 14.5px;
}

.contact-point-list li i {
    position: absolute;
    left: 0;
    top: 0.7rem;
    color: var(--teal);
}

.contact-form-wrap {
    padding: clamp(1.6rem, 3vw, 2.6rem);
}

.contact-form-wrap form {
    margin: 0;
}

.form-group {
    margin-bottom: 1.15rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.35rem;
    color: var(--deep);
    font-size: 14px;
    font-weight: 700;
}

.form-control {
    display: block;
    width: 100%;
    min-height: 44px;
    padding: 0.6rem 0.8rem;
    border: 1px solid #C7D6E4;
    border-radius: var(--radius-input);
    background: #FFF;
    color: var(--deep);
    font-size: 15px;
    line-height: 1.5;
    transition: border-color .2s ease, box-shadow .2s ease;
}

textarea.form-control {
    height: auto;
    min-height: 112px;
    resize: vertical;
}

.form-control:focus {
    border-color: var(--blue);
    outline: none;
    box-shadow: 0 0 0 4px rgba(23, 101, 184, 0.12);
}

.form-control::placeholder {
    color: #A6B8C8;
}

.form-note {
    margin-top: 0.65rem;
    color: var(--mut);
    font-size: 13px;
    line-height: 1.7;
}

.form-message {
    display: flex;
    align-items: flex-start;
    gap: 0.45rem;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-input);
    background: #EAF6F3;
    border: 1px solid #BCE3DE;
    color: #0B7875;
    font-size: 14px;
    margin-bottom: 1rem;
}

.form-message i {
    margin-top: 0.3rem;
}

.btn-block {
    width: 100%;
    margin-top: 0.2rem;
}

.site-footer {
    background: #FFF;
    border-top: 1px solid var(--line);
    padding: 3.6rem 0 0;
}

.footer-cols {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
    gap: 2rem;
}

.footer-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 0.8rem;
}

.footer-desc {
    max-width: 300px;
    margin-bottom: 0;
    color: var(--mut);
    font-size: 14px;
    line-height: 1.8;
}

.footer-title {
    margin-bottom: 0.8rem;
    color: var(--deep);
    font-size: 15px;
    font-weight: 800;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
    align-items: flex-start;
}

.footer-links a {
    color: var(--text);
    font-size: 14px;
    line-height: 1.6;
}

.footer-links a:hover {
    color: var(--blue);
}

.footer-info-text {
    color: var(--text);
    font-size: 14px;
    line-height: 1.7;
}

.footer-info-text p {
    margin-bottom: 0.35rem;
}

.footer-bottom {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    padding: 1.35rem 0;
    margin-top: 3rem;
    border-top: 1px solid var(--line);
    color: var(--mut);
    font-size: 13.5px;
}

.footer-bottom span {
    color: var(--mut);
}

.footer-bottom a {
    color: var(--mut);
}

.footer-bottom a:hover {
    color: var(--blue);
}

@media (max-width: 1023.98px) {
    .site-header-inner {
        flex-wrap: wrap;
        padding-top: 0.8rem;
        padding-bottom: 0.8rem;
    }

    .nav-toggle-btn {
        display: inline-flex;
        margin-left: auto;
    }

    .site-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
        padding: 0.85rem 1.2rem 1.2rem;
        background: #FFF;
        border-bottom: 1px solid var(--line);
        box-shadow: 0 16px 30px rgba(19, 53, 82, 0.1);
    }

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

    .site-menu {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
    }

    .site-menu li.current::after {
        display: none;
    }

    .site-menu a {
        display: block;
        padding: 0.65rem 0.5rem;
        border-bottom: 1px solid #F0F5FA;
        white-space: normal;
    }

    .site-menu li:last-child a {
        border-bottom: 0;
    }

    .nav-extra {
        flex-direction: column;
        align-items: stretch;
    }

    .search-box input {
        width: 100%;
    }

    .nav-cta.btn {
        min-height: 44px;
        margin-top: 0.2rem;
    }

    .category-hero-inner {
        padding-top: 3rem;
    }

    .footer-cols {
        grid-template-columns: 1fr 1fr;
        gap: 2rem 1.5rem;
    }

    .footer-desc {
        max-width: 100%;
    }
}

@media (max-width: 767.98px) {
    body {
        font-size: 15px;
    }

    .grid-container {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .brand-text {
        font-size: 18px;
    }

    .category-hero {
        text-align: left;
    }

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

    .hero-photo {
        margin-top: 1rem;
        margin-bottom: 0;
    }

    .footer-cols {
        grid-template-columns: 1fr;
        gap: 1.7rem;
    }

    .footer-descr {
        max-width: 100%;
    }

    .contact-panel .contact-intro,
    .contact-panel .contact-form-wrap {
        padding: 1.5rem;
    }

    .accordion-title {
        font-size: 15px;
    }
}

@media (max-width: 520px) {
    .grid-container {
        padding-left: 0.85rem;
        padding-right: 0.85rem;
    }

    .site-header-inner {
        gap: 0.6rem;
    }

    .brand-mark {
        width: 36px;
        height: 36px;
        border-radius: 10px;
        font-size: 12px;
    }

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

    .brand-text small {
        font-size: 11px;
    }

    .nav-toggle-btn {
        width: 40px;
        height: 40px;
    }

    .hero-buttons .btn {
        width: 100%;
    }

    .workflow-step {
        padding: 1.2rem 0.8rem 0.6rem;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}