/* roulang page: index */
:root {
  --primary: #1682A6;
  --primary-dark: #0A4F6D;
  --accent: #F7B955;
  --page: #FFFFFF;
  --bg: #EEF5F8;
  --text: #1B2A33;
  --muted: #657F8A;
  --line: #DFE9EE;
  --radius: 18px;
  --radius-inner: 12px;
  --shadow-sm: 0 2px 8px rgba(19, 59, 72, .04);
  --shadow-md: 0 14px 30px rgba(19, 59, 72, .09);
  --shadow-lg: 0 24px 50px rgba(19, 59, 72, .12);
  --font-stack: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, sans-serif;
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-stack);
  background: var(--page);
  color: var(--text);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
ul, ol {
  list-style: none;
}
a {
  color: inherit;
  text-decoration: none;
  transition: color .2s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease, transform .2s ease;
}
img {
  display: block;
  max-width: 100%;
}
button, input, textarea {
  font-family: inherit;
}
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.container-custom {
  max-width: 1280px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
.section {
  padding: clamp(3.5rem, 7vw, 5.75rem) 0;
}
.section-alt {
  background: var(--bg);
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 32px;
}
.section-title {
  font-size: clamp(1.6rem, 2.6vw, 2.2rem);
  line-height: 1.35;
  letter-spacing: -0.01em;
  font-weight: 700;
  color: var(--text);
}
.section-title small {
  display: block;
  font-size: .95rem;
  font-weight: 400;
  color: var(--muted);
  margin-top: 6px;
  letter-spacing: 0;
}
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-weight: 600;
  font-size: .95rem;
  border-bottom: 2px solid transparent;
}
.text-link i {
  transition: transform .2s ease;
}
.text-link:hover {
  color: var(--primary-dark);
  border-bottom-color: var(--primary);
}
.text-link:hover i {
  transform: translateX(4px);
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: .95rem;
  line-height: 1.4;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
}
.btn-primary {
  background: var(--accent);
  color: #142632;
  border-color: var(--accent);
  box-shadow: 0 10px 24px rgba(240, 164, 74, .2);
}
.btn-primary:hover {
  background: #FFC763;
  border-color: #FFC763;
  transform: translateY(-2px);
  box-shadow: 0 14px 30px rgba(240, 164, 74, .3);
}
.btn-outline {
  background: transparent;
  color: var(--primary-dark);
  border-color: rgba(22, 130, 166, .35);
}
.btn-outline:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}
.btn-white {
  background: #fff;
  color: var(--primary-dark);
  border-color: #fff;
}
.btn-white:hover {
  background: rgba(255, 255, 255, .9);
  color: var(--primary-dark);
  transform: translateY(-2px);
}
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(22, 130, 166, .1);
  color: var(--primary-dark);
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .02em;
}
.tag-accent {
  background: rgba(247, 185, 85, .15);
  color: #8a5a0b;
}
.tag-white {
  background: rgba(255, 255, 255, .14);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, .25);
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .96);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
}
.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 12px 0;
  background: #fff;
}
.header-top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: 100%;
}
.site-logo {
  font-size: clamp(1.15rem, 2vw, 1.4rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
}
.site-logo i {
  color: var(--primary);
  font-size: 1.2em;
}
.header-search-wrap {
  flex: 1;
  max-width: 520px;
  min-width: 0;
}
.header-search {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 3px 4px 3px 16px;
  transition: border-color .2s ease, background .2s ease;
}
.header-search:focus-within {
  background: #fff;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(22, 130, 166, .1);
}
.header-search input {
  flex: 1;
  min-width: 0;
  border: 0;
  background: transparent;
  padding: 7px 0;
  font-size: .9rem;
  color: var(--text);
  outline: 0;
}
.header-search input::placeholder {
  color: var(--muted);
}
.header-search button {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: #fff;
  border: 0;
  cursor: pointer;
  transition: background .2s ease;
}
.header-search button:hover {
  background: var(--primary-dark);
}
.hot-query {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  font-size: .78rem;
  color: var(--muted);
  margin-top: 6px;
}
.hot-query a {
  color: var(--muted);
  border-bottom: 1px dotted rgba(101, 127, 138, .5);
  line-height: 1.3;
}
.hot-query a:hover {
  color: var(--primary);
  border-bottom-color: var(--primary);
}
.header-nav {
  border-top: 1px solid var(--line);
  background: #fff;
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
  overflow-x: auto;
  scrollbar-width: none;
}
.nav-list::-webkit-scrollbar {
  display: none;
}
.nav-list a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 12px 15px;
  font-size: .92rem;
  color: var(--muted);
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}
.nav-list a:hover {
  color: var(--primary);
}
.nav-list .is-active a,
.nav-list li.is-active a {
  color: var(--primary-dark);
  border-bottom-color: var(--accent);
  font-weight: 700;
}
.nav-side-link {
  display: none;
  font-size: .8rem;
  white-space: nowrap;
  color: var(--primary-dark);
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(22, 130, 166, .08);
}
@media (min-width: 1024px) {
  .nav-side-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
  }
}

.hero {
  background: linear-gradient(180deg, #F4FAFC 0%, #FFFFFF 100%);
  padding: clamp(3rem, 6vw, 5rem) 0 0;
  overflow: hidden;
}
.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, .9fr);
  gap: clamp(30px, 5vw, 72px);
  align-items: center;
}
.hero-copy {
  padding: 0 0 clamp(3.5rem, 7vw, 6rem);
}
.hero-eyebrow {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}
.hero h1 {
  font-size: clamp(2.1rem, 4vw, 3.2rem);
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: 18px;
  font-weight: 800;
  color: var(--text);
}
.hero-lead {
  font-size: clamp(1rem, 1.4vw, 1.14rem);
  color: var(--muted);
  max-width: 620px;
  line-height: 1.85;
  margin-bottom: 26px;
}
.hero-lead strong {
  color: var(--primary-dark);
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 28px;
}
.hero-note {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-size: .85rem;
}
.hero-note i {
  color: #4A9D86;
  font-size: 1rem;
}

.hero-visual {
  position: relative;
  min-height: 620px;
}
.hero-photo {
  position: absolute;
  left: 4%;
  right: 2%;
  top: 34px;
  height: 72%;
  border-radius: 26px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: #dce9ef;
}
.hero-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-photo-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10, 79, 109, 0) 20%, rgba(10, 79, 109, .65) 100%);
}
.hero-photo-caption {
  position: absolute;
  left: 22px;
  right: 22px;
  bottom: 20px;
  color: #fff;
  z-index: 2;
}
.hero-photo-caption .tag {
  margin-bottom: 8px;
}
.hero-photo-caption p {
  font-size: .95rem;
  font-weight: 600;
  color: rgba(255, 255, 255, .94);
  line-height: 1.6;
  margin: 0;
}
.mini-card {
  position: absolute;
  width: 44%;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 4px solid #fff;
  background: #fff;
}
.mini-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.mini-card-1 {
  left: -3%;
  bottom: 64px;
  height: 220px;
  z-index: 3;
}
.mini-card-2 {
  right: -2%;
  bottom: 130px;
  height: 195px;
  z-index: 4;
}
.mini-card-1,
.mini-card-2 {
  display: block;
}
.mini-card .mini-label {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 34px 13px 12px;
  background: linear-gradient(180deg, transparent, rgba(10, 79, 109, .78));
  color: #fff;
  font-size: .78rem;
  font-weight: 600;
}
@media (max-width: 1023px) {
  .hero-inner {
    grid-template-columns: 1fr;
  }
  .hero-copy {
    padding-bottom: 20px;
  }
  .hero-visual {
    min-height: 420px;
    margin: 0 4%;
  }
  .mini-card-1,
  .mini-card-2 {
    display: none;
  }
  .hero-photo {
    top: 18px;
    height: 88%;
    left: 2%;
    right: 2%;
  }
}
@media (max-width: 640px) {
  .hero {
    padding-top: 48px;
  }
  .hero-visual {
    margin: 0;
    min-height: 380px;
  }
  .hero-actions .btn {
    width: calc(50% - 8px);
    padding-left: 12px;
    padding-right: 12px;
  }
}

.feature-cards {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 24px;
}
.feature-main,
.feature-small {
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  transition: box-shadow .25s ease, transform .25s ease;
}
.feature-main:hover,
.feature-small:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.feature-main .media {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: #dce9ef;
  position: relative;
}
.feature-main .media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.feature-main .content {
  padding: 22px 24px 26px;
}
.feature-main h3 {
  font-size: 1.26rem;
  line-height: 1.5;
  margin: 12px 0 8px;
}
.feature-main p {
  color: var(--muted);
  font-size: .93rem;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
}
.feature-small-wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
.feature-small {
  display: flex;
  gap: 16px;
  padding: 12px;
}
.feature-small .media {
  width: 104px;
  aspect-ratio: 4 / 5;
  flex: 0 0 auto;
  border-radius: var(--radius-inner);
  overflow: hidden;
}
.feature-small .media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.feature-small .content {
  flex: 1;
  min-width: 0;
  padding: 6px 2px;
}
.feature-small h3 {
  font-size: .98rem;
  line-height: 1.5;
  margin: 6px 0 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.feature-small p {
  color: var(--muted);
  font-size: .84rem;
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.feature-small time {
  display: block;
  margin-top: 6px;
  font-size: .78rem;
  color: #8CA4AD;
}
@media (max-width: 900px) {
  .feature-cards {
    grid-template-columns: 1fr;
  }
  .feature-small-wrap {
    grid-template-columns: 1fr;
  }
}

.channel-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-top: 10px;
}
.channel-item {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 22px 24px;
  box-shadow: var(--shadow-sm);
  transition: border-color .25s ease, box-shadow .25s ease, transform .2s ease;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.channel-item:hover {
  border-color: rgba(22, 130, 166, .3);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.channel-num {
  position: absolute;
  right: 22px;
  top: 16px;
  font-size: 2.3rem;
  font-weight: 800;
  color: rgba(22, 130, 166, .08);
  line-height: 1;
  pointer-events: none;
}
.channel-icon {
  width: 48px;
  height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 16px;
  background: rgba(22, 130, 166, .1);
  color: var(--primary);
  font-size: 1.25rem;
}
.channel-item h3 {
  font-size: 1.02rem;
  margin-bottom: 4px;
}
.channel-item p {
  color: var(--muted);
  font-size: .88rem;
  line-height: 1.75;
  flex: 1;
}
.channel-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: var(--primary);
  font-size: .9rem;
}
.channel-link i {
  transition: transform .25s ease;
}
.channel-item:hover .channel-link i {
  transform: translateX(5px);
}
@media (max-width: 700px) {
  .channel-grid {
    grid-template-columns: 1fr;
  }
}

.steps-wrap {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 34px;
}
.step-card {
  position: relative;
  background: #fff;
  padding: 26px 20px 22px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  text-align: left;
}
.step-card .step-index {
  font-size: .78rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: .08em;
  text-transform: uppercase;
  background: rgba(22, 130, 166, .08);
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
}
.step-card h3 {
  font-size: 1.02rem;
  margin-bottom: 8px;
}
.step-card p {
  color: var(--muted);
  font-size: .86rem;
  line-height: 1.75;
  margin: 0;
}
@media (max-width: 960px) {
  .steps-wrap {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 520px) {
  .steps-wrap {
    grid-template-columns: 1fr;
  }
}

.say-wrap {
  background: linear-gradient(135deg, #EAF4F8 0%, #F6FBFD 100%);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 26px 0;
  overflow: hidden;
}
.say-inner {
  display: flex;
  gap: 18px;
  overflow-x: auto;
  padding: 6px 20px 16px;
  scrollbar-width: thin;
  scrollbar-color: rgba(22, 130, 166, .25) transparent;
}
.say-card {
  flex: 1 0 auto;
  width: 330px;
  max-width: 90%;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 24px;
  box-shadow: var(--shadow-sm);
}
.say-card .say-icon {
  font-size: 2.4rem;
  line-height: 1;
  color: var(--accent);
  margin-bottom: 8px;
  display: block;
}
.say-card blockquote {
  border: 0;
  padding: 0;
  margin: 0 0 12px;
  font-size: .93rem;
  color: rgba(27, 42, 51, .88);
  min-height: 76px;
  line-height: 1.8;
}
.say-card figcaption {
  font-size: .82rem;
  color: var(--muted);
  border-top: 1px solid var(--line);
  padding-top: 10px;
  font-style: normal;
}
@media (max-width: 640px) {
  .say-card {
    width: 300px;
  }
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}
.news-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .25s ease, transform .25s ease;
}
.news-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.news-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}
.news-card h3 {
  font-size: 1.02rem;
  line-height: 1.55;
  font-weight: 700;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-card p {
  color: var(--muted);
  font-size: .87rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 14px;
}
.news-card .read-more {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: .85rem;
  color: var(--primary);
  font-weight: 600;
}
.news-card .read-more i {
  transition: transform .2s ease;
}
.news-card:hover .read-more i {
  transform: translateX(4px);
}
.news-date {
  color: #8CA4AD;
  font-size: .78rem;
  white-space: nowrap;
}
.empty-state {
  grid-column: 1 / -1;
  background: #fff;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  padding: 48px 24px;
  text-align: center;
  color: var(--muted);
}
@media (max-width: 760px) {
  .news-grid {
    grid-template-columns: 1fr;
  }
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: box-shadow .25s ease, border-color .25s ease;
}
.faq-item:hover {
  border-color: rgba(22, 130, 166, .2);
  box-shadow: var(--shadow-md);
}
.faq-summary {
  cursor: pointer;
  padding: 18px 22px;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: .98rem;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--text);
}
.faq-summary::-webkit-details-marker {
  display: none;
}
.faq-summary i {
  color: var(--primary);
  font-size: .85rem;
  flex: 0 0 auto;
  transition: transform .25s ease;
}
.faq-item[open] .faq-summary i {
  transform: rotate(180deg);
}
.faq-answer {
  padding: 0 22px 18px;
  font-size: .91rem;
  color: var(--muted);
  border-top: 1px solid rgba(223, 233, 238, .6);
  margin-top: 2px;
  padding-top: 14px;
}
@media (max-width: 760px) {
  .faq-grid {
    grid-template-columns: 1fr;
  }
}

.cta-banner {
  position: relative;
  border-radius: 28px;
  overflow: hidden;
  background: linear-gradient(120deg, #0A4F6D 0%, #136D8C 60%, #1682A6 100%);
  padding: clamp(42px, 7vw, 80px) clamp(22px, 5vw, 64px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 26px;
  box-shadow: var(--shadow-lg);
}
.cta-banner::after {
  content: "";
  position: absolute;
  right: -80px;
  bottom: -120px;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  border: 34px solid rgba(255, 255, 255, .06);
}
.cta-banner .btn {
  position: relative;
  z-index: 2;
  flex: 0 0 auto;
}
.cta-copy {
  position: relative;
  z-index: 2;
  color: #fff;
}
.cta-copy h2 {
  font-size: clamp(1.55rem, 2.6vw, 2.2rem);
  line-height: 1.35;
  margin-bottom: 8px;
}
.cta-copy p {
  color: rgba(255, 255, 255, .82);
  font-size: .98rem;
  max-width: 640px;
}
.cta-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}
@media (max-width: 720px) {
  .cta-banner {
    flex-direction: column;
    align-items: flex-start;
  }
}

.site-footer {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, .84);
  margin-top: clamp(3rem, 6vw, 5rem);
}
.footer-top {
  padding: 56px 0 36px;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, .9fr) minmax(0, .9fr);
  gap: 36px;
}
.footer-brand .site-logo {
  color: #fff;
  margin-bottom: 14px;
}
.footer-brand .site-logo i {
  color: var(--accent);
}
.footer-brand p {
  font-size: .88rem;
  line-height: 1.9;
  color: rgba(255, 255, 255, .7);
}
.footer-cols {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.footer-title {
  color: #fff;
  font-size: 1rem;
  margin-bottom: 14px;
  font-weight: 700;
}
.footer-links li {
  margin-bottom: 8px;
}
.footer-links a {
  font-size: .86rem;
  color: rgba(255, 255, 255, .72);
  transition: color .2s ease, padding-left .2s ease;
}
.footer-links a:hover {
  color: #fff;
  padding-left: 3px;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .12);
  padding: 18px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-size: .8rem;
  color: rgba(255, 255, 255, .55);
}
.footer-bottom .domain-line a {
  color: rgba(255, 255, 255, .65);
}
@media (max-width: 900px) {
  .footer-top {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-cols {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 520px) {
  .footer-cols {
    grid-template-columns: 1fr;
  }
}

.header-mobile-search {
  display: none;
}
@media (max-width: 820px) {
  .header-top {
    flex-wrap: wrap;
  }
  .header-top-inner {
    flex-wrap: wrap;
  }
  .header-search-wrap {
    order: 3;
    max-width: none;
    flex-basis: 100%;
    display: flex;
    align-items: center;
    gap: 10px;
  }
  .hot-query {
    flex: 1;
  }
  .header-top .header-quick-btn {
    display: none;
  }
  .nav-list {
    width: 100%;
  }
  .section-head {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* roulang page: category1 */
:root {
            --primary: #1682A6;
            --primary-dark: #0A4F6D;
            --primary-soft: #E5F1F6;
            --accent: #F0A44A;
            --bg-page: #FFFFFF;
            --bg-soft: #EEF5F8;
            --text-main: #1B2A33;
            --text-muted: #657F8A;
            --border: #DFE9EE;
            --radius-card: 17px;
            --radius-img: 11px;
            --radius-btn: 999px;
            --shadow-sm: 0 2px 8px rgba(19,59,72,.04);
            --shadow-md: 0 14px 30px rgba(19,59,72,.09);
            --shadow-lg: 0 24px 50px rgba(19,59,72,.12);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, sans-serif;
            --container-w: 1280px;
        }

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

        html { scroll-behavior: smooth; }

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

        img { max-width: 100%; height: auto; display: block; border: 0; }
        a { color: var(--primary); text-decoration: none; transition: color .2s; }
        a:hover { color: var(--primary-dark); }
        ul, ol { list-style: none; }

        .container-custom {
            width: 100%;
            max-width: var(--container-w);
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* 按钮 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 600;
            padding: 10px 24px;
            border-radius: var(--radius-btn);
            line-height: 1.4;
            transition: all .22s ease;
            border: 0;
            cursor: pointer;
            font-family: var(--font-sans);
        }
        .btn i { font-size: 14px; }
        .btn-primary {
            background: var(--accent);
            color: #1B2A33;
        }
        .btn-primary:hover {
            background: #e59334;
            color: #1B2A33;
            transform: translateY(-2px);
            box-shadow: 0 10px 22px rgba(240,164,74,.28);
        }
        .btn-secondary {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
        }
        .btn-secondary:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .btn-ghost-light {
            background: rgba(255,255,255,.12);
            border: 1px solid rgba(255,255,255,.5);
            color: #fff;
            backdrop-filter: blur(6px);
        }
        .btn-ghost-light:hover {
            background: rgba(255,255,255,.22);
            color: #fff;
            border-color: #fff;
        }
        .btn-lg { padding: 14px 34px; font-size: 16px; }
        .btn-small { padding: 6px 18px; font-size: 14px; }

        a:focus-visible, button:focus-visible, input:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        /* ===== Header ===== */
        .site-header {
            background: #fff;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 1px 0 rgba(0,0,0,.02), 0 8px 30px rgba(19,59,72,.03);
        }

        .header-top {
            background: #fff;
            border-bottom: 1px solid var(--border);
        }

        .header-top-inner {
            display: flex;
            align-items: center;
            gap: 24px;
            min-height: 58px;
            padding: 8px 0;
        }

        .site-logo {
            font-size: 1.55rem;
            font-weight: 800;
            color: var(--primary-dark) !important;
            letter-spacing: -0.02em;
            display: inline-flex;
            align-items: center;
            gap: 9px;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .site-logo i {
            color: var(--accent);
            font-size: 1.7rem;
        }
        .site-logo:hover { color: var(--primary) !important; }

        .header-search-wrap {
            flex: 1;
            min-width: 0;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .header-search {
            display: flex;
            align-items: center;
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            background: var(--bg-soft);
            padding: 2px 2px 2px 18px;
            max-width: 580px;
            transition: background .2s, border-color .2s;
        }
        .header-search:focus-within {
            background: #fff;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(22,130,166,.08);
        }
        .header-search input {
            border: 0;
            background: transparent;
            box-shadow: none;
            padding: 7px 0;
            margin: 0;
            font-family: var(--font-sans);
            font-size: 14px;
            width: 100%;
            min-width: 0;
        }
        .header-search input:focus {
            box-shadow: none;
            background: transparent;
            border: 0;
        }
        .header-search button {
            background: var(--accent);
            border: 0;
            width: 34px;
            height: 34px;
            border-radius: 50%;
            color: #1B2A33;
            cursor: pointer;
            flex-shrink: 0;
            transition: transform .2s, background .2s;
        }
        .header-search button:hover { background: #e59334; transform: scale(1.06); }
        .header-search button i { font-size: 14px; }

        .hot-query {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 12px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }
        .hot-query span { font-weight: 500; }
        .hot-query a {
            color: #849CA7;
            background: #F7FAFB;
            padding: 1px 12px;
            border-radius: 30px;
            border: 1px solid var(--border);
        }
        .hot-query a:hover { color: var(--primary); border-color: var(--primary); }

        .header-quick-btn { flex-shrink: 0; }

        .header-nav {
            background: #fff;
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 28px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            padding: 0;
            margin: 0;
        }
        .nav-list::-webkit-scrollbar { display: none; }

        .nav-list li {
            margin: 0;
            display: flex;
            align-items: center;
        }

        .nav-list a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 15px;
            font-weight: 500;
            color: #4B636E;
            padding: 10px 2px;
            border-bottom: 3px solid transparent;
            transition: all .2s;
            white-space: nowrap;
        }
        .nav-list a i { font-size: 14px; color: #9DB4BF; }
        .nav-list a:hover, .nav-list li.is-active a {
            color: var(--primary-dark);
            border-bottom-color: var(--primary-dark);
        }
        .nav-list li.is-active a { font-weight: 700; }

        .nav-side-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary-dark);
            padding: 6px 12px;
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border-radius: 999px;
        }
        .nav-side-link:hover { background: var(--primary-soft); color: var(--primary-dark); }

        .site-header .nav-list a[href="/service-overview.html"] { color: var(--primary-dark); font-weight: 700; border-bottom-color: var(--primary-dark); }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255,255,255,.88);
            margin-top: 40px;
        }
        .footer-top {
            display: flex;
            padding: 50px 0 32px;
            gap: 48px;
            flex-wrap: wrap;
        }
        .footer-brand { flex: 1 1 280px; max-width: 420px; }
        .footer-brand .site-logo { color: #fff !important; }
        .footer-brand p { font-size: 14px; margin-top: 14px; color: #B7D2DD; }
        .footer-cols { display: flex; gap: 50px; flex-wrap: wrap; }
        .footer-cols > div { min-width: 120px; }
        .footer-col {}
        .footer-title {
            font-size: 15px;
            color: #fff;
            margin: 0 0 14px;
            letter-spacing: .06em;
            font-weight: 700;
        }
        .footer-links li + li { margin-top: 8px; }
        .footer-links a { color: #B7D2DD; font-size: 14px; }
        .footer-links a:hover { color: var(--accent); }
        .footer-col p { font-size: 14px; color: #B7D2DD; max-width: 240px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,.13);
            display: flex;
            gap: 12px;
            justify-content: space-between;
            align-items: center;
            padding: 18px 0;
            font-size: 13px;
            color: #94B8C8;
            flex-wrap: wrap;
        }
        .footer-bottom .domain-line a { color: #B7D2DD; }
        .footer-bottom .domain-line a:hover { color: var(--accent); }

        /* ===== 页面通用 Hero ===== */
        .page-banner {
            background: linear-gradient(145deg, #F3F9FB 0%, #E3F0F5 60%, #d5e9f1 100%);
            border-bottom: 1px solid var(--border);
            padding-top: clamp(48px, 7vw, 76px);
            padding-bottom: clamp(42px, 6vw, 64px);
            overflow: hidden;
        }
        .page-banner .container-custom {
            position: relative;
            z-index: 2;
        }
        .breadcrumb-zone {
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            gap: 8px;
            align-items: center;
            margin-bottom: 18px;
        }
        .breadcrumb-zone a { color: var(--text-muted); }
        .breadcrumb-zone a:hover { color: var(--primary); }
        .breadcrumb-zone i { font-size: 10px; color: #a4b8c2; }

        .banner-flex {
            display: grid;
            grid-template-columns: 1.02fr .98fr;
            gap: 40px;
            align-items: center;
        }

        .tag-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary-soft);
            color: var(--primary-dark);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: var(--radius-btn);
            margin-bottom: 14px;
        }

        .page-banner h1 {
            font-size: clamp(1.7rem, 3.4vw, 2.6rem);
            line-height: 1.28;
            color: var(--primary-dark);
            letter-spacing: -0.02em;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .page-banner .page-desc {
            font-size: 15.5px;
            color: #466a78;
            line-height: 1.85;
            max-width: 600px;
        }

        .banner-cta { margin-top: 26px; display: flex; gap: 14px; flex-wrap: wrap; }

        .banner-media {
            position: relative;
            min-height: 300px;
        }
        .banner-media img {
            width: 350px;
            max-width: 100%;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-lg);
            margin: 0 auto;
        }
        .banner-media .floating-img-1 { position: absolute; width: 148px; border-radius: var(--radius-card); box-shadow: var(--shadow-md); right: 6%; bottom: -12px; border: 5px solid #fff; }

        .anchor-bar {
            background: #fff;
            border-bottom: 1px solid var(--border);
            box-shadow: 0 6px 22px rgba(19,59,72,.02);
            position: sticky;
            top: 89px;
            z-index: 50;
        }
        .anchor-bar .anchor-list {
            display: flex;
            gap: 10px;
            overflow-x: auto;
            padding: 6px 0;
            margin: 0;
            scrollbar-width: none;
        }
        .anchor-bar .anchor-list::-webkit-scrollbar { display: none; }
        .anchor-list a {
            white-space: nowrap;
            font-size: 14px;
            font-weight: 500;
            padding: 5px 16px;
            border-radius: 999px;
            background: var(--bg-soft);
            color: #526D79;
            border: 1px solid transparent;
        }
        .anchor-list a:hover { background: #E2F0F5; color: var(--primary-dark); }

        /* 分类页2 版式: 竖向锚点 + 宽卡 */
        .service-content-layout {
            padding: clamp(42px, 6vw, 64px) 0 20px;
        }
        .layout-grid-2col {
            display: grid;
            grid-template-columns: 230px 1fr;
            gap: 36px;
        }
        .vertical-anchors {
            position: sticky;
            top: 130px;
            align-self: start;
        }
        .vertical-anchors h3 {
            font-size: 16px;
            margin-bottom: 12px;
            color: var(--primary-dark);
            letter-spacing: .05em;
        }
        .anchor-vertical-list {
            border-left: 2px solid var(--border);
            padding: 2px 0 6px 0;
        }
        .anchor-vertical-list li { margin: 0; }
        .anchor-vertical-list a {
            display: block;
            padding: 8px 18px;
            font-size: 15px;
            color: #5B7682;
            border-left: 2px solid transparent;
            margin-left: -2px;
            font-weight: 400;
            transition: all .2s;
        }
        .anchor-vertical-list a:hover { color: var(--primary-dark); border-left-color: var(--primary); padding-left: 22px; }

        .content-main-stack { min-width: 0; }

        .service-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: clamp(24px, 4vw, 38px);
            box-shadow: var(--shadow-sm);
            margin-bottom: 24px;
            transition: box-shadow .3s, border .3s;
        }
        .service-card:hover { box-shadow: var(--shadow-md); }

        .service-card .sc-head { display: flex; gap: 14px; align-items: flex-start; margin-bottom: 18px; }
        .service-card .sc-icon {
            width: 50px;
            height: 50px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            background: var(--primary-soft);
            color: var(--primary);
            flex-shrink: 0;
        }
        .service-card h2, .service-card h3.sv-title {
            font-size: 1.3rem;
            color: var(--primary-dark);
            margin: 4px 0 2px;
            letter-spacing: -0.01em;
            line-height: 1.4;
        }
        .service-card .sv-sub { color: var(--text-muted); font-size: 14px; }
        .service-card p { font-size: 15px; margin: 10px 0; color: #2D4654; }
        .service-card ul.feature-mark { margin: 10px 0; }
        .service-card ul.feature-mark li { position: relative; padding-left: 26px; margin-bottom: 10px; font-size: 15px; color: #2D4654; }
        .service-card ul.feature-mark li::before {
            content: "\f058";
            font-family: "Font Awesome 6 Free";
            font-weight: 400;
            position: absolute; left: 0; top: 1px;
            color: var(--primary);
        }

        .service-grid-list { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
        .service-grid-list .feat-mini {
            background: #F3F8FA;
            border-radius: 14px;
            padding: 16px 16px;
            display: flex;
            gap: 12px;
            align-items: flex-start;
        }
        .feat-mini i { color: var(--primary); font-size: 17px; margin-top: 4px; flex-shrink: 0; }
        .feat-mini strong { display: block; font-size: 15px; color: #2D4654; }
        .feat-mini span { font-size: 13px; color: var(--text-muted); }

        .data-band {
            background: var(--accent);
            padding: 18px 24px;
            border-radius: 16px;
            display: flex;
            justify-content: space-around;
            margin: 22px -4px 4px;
            flex-wrap: wrap;
            background: linear-gradient(100deg, #F4A951, #E88C25);
            color: #1B2A33;
        }
        .data-item { text-align: center; min-width: 96px; }
        .data-item .num { font-size: 25px; font-weight: 800; }
        .data-item .label { font-size: 13px; opacity: .8; }

        .steps-flow { counter-reset: steps-flow; border: 0; padding: 4px 0 10px; }
        .step-list { margin: 16px 0 0; }

        .step-item {
            display: grid;
            grid-template-columns: 50px 1fr;
            gap: 15px;
            position: relative;
            padding-bottom: 28px;
        }
        .step-item:not(:last-child)::before {
            content: "";
            position: absolute;
            left: 24px;
            top: 48px;
            bottom: 4px;
            width: 2px;
            background: var(--border);
        }
        .step-num {
            width: 50px;
            height: 50px;
            background: var(--primary-soft);
            color: var(--primary-dark);
            font-weight: 700;
            font-size: 18px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            z-index: 1;
        }
        .step-body h4 { font-size: 17px; color: #1B2A33; margin-bottom: 4px; }
        .step-body p { font-size: 15px; color: var(--text-muted); margin: 0; }

        .two-column-table {
            display: grid;
            grid-template-columns: 100px 1fr;
            gap: 1px;
            background: var(--border);
            border-radius: 14px;
            overflow: hidden;
            margin: 20px 0 6px;
        }
        .tct-cell { background: #fff; padding: 12px 16px; font-size: 14px; }
        .tct-label { background: #E9F3F7; font-weight: 600; color: #375A6B; }

        .info-note {
            background: #FBF3E7;
            padding: 18px 22px;
            border-radius: 14px;
            font-size: 14px;
            border-left: 4px solid var(--accent);
        }

        .no-bg-card { box-shadow: none; }

        .section-title-2 {
            font-size: clamp(1.5rem, 2.4vw, 2.1rem);
            color: var(--primary-dark);
            letter-spacing: -0.015em;
            margin-bottom: 12px;
            font-weight: 800;
            line-height: 1.3;
        }
        .section-lead { color: var(--text-muted); margin-bottom: 30px; font-size: 15.5px; }

        .soft-bg-section { background: var(--bg-soft); padding: clamp(40px, 5vw, 60px) 0; }
        .white-section { background: #fff; padding: clamp(40px, 5vw, 60px) 0; }

        .faq-item {
            background: #fff;
            border-radius: 14px;
            padding: 22px 24px;
            margin-bottom: 14px;
            box-shadow: var(--shadow-sm);
        }

        .faq-q { font-weight: 700; font-size: 16px; color: #1f3a49; display: flex; align-items: center; gap: 12px; }
        .faq-q i { color: var(--accent); }
        .faq-a { margin: 10px 0 0 30px; color: #456671; font-size: 15px; }

        .cta-section { padding: clamp(62px, 9vw, 100px) 0; background: #fff; }

        .cta-box {
            background: var(--primary-dark);
            border-radius: var(--radius-card);
            color: #fff;
            padding: clamp(40px, 6vw, 80px);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-box .circle-deco { position: absolute; left: -80px; top: -50px; width: 300px; height: 300px; }
        .cta-box .circle-deco::before { content: ""; display: block; width: 100%; height: 100%; border: 22px solid rgba(255,255,255,.07); border-radius: 50%; }
        .cta-box .circle-deco-2 { position: absolute; right: -100px; bottom: -130px; width: 280px; height: 280px; border: 20px solid rgba(255,255,255,.05); border-radius: 50%; }

        .cta-box h2 { color: #fff; font-size: clamp(1.5rem, 2.7vw, 2.3rem); margin: 0 0 10px; }
        .cta-box p { font-size: 15.5px; color: #b8d4df; margin-bottom: 26px; }
        .cta-btn-group { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
        .video-chip { display: inline-flex; align-items: center; gap: 10px; margin-top: 22px; font-size: 14px; color: #93b9c7; background: rgba(255,255,255,.04); padding: 8px 20px; border-radius: 999px; }

        .backpic-hero-deco { position: relative; }
        .media-area {
            margin: 22px 0 18px;
            border-radius: var(--radius-img);
        }
        .media-area img {
            border-radius: var(--radius-img);
            box-shadow: var(--shadow-md);
            width: 100%;
            object-fit: cover;
        }
        .related-channel-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 18px; margin-top: 30px; }

        .mini-entry-card {
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 20px;
            background: #EBF3F7;
            transition: transform .25s, box-shadow .25s;
        }
        .mini-entry-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .mini-entry-card img { border-radius: 12px; margin-bottom: 14px; }
        .mini-entry-card h4 { margin-bottom: 4px; }
        .mini-entry-card p { margin: 0; font-size: 13.5px; color: var(--text-muted); }

        /* 板块 */
        .section-block { margin-top: 0; }

        /* block head line */
        .block-head-center { text-align: center; max-width: 700px; margin: 0 auto 34px; }

        .spec-callout {
            display: inline-flex;
            background: #fff;
            border-radius: 999px;
            font-size: 13px;
            padding: 5px 16px;
            color: var(--accent);
            border: 2px solid rgba(255,255,255,.2);
            margin-bottom: 10px;
        }

        /*** 响应式 Foundation 网格微调 ***/
        .no-margin { margin: 0; }

        /* 小屏适配 */
        @media screen and (max-width: 1024px) {
            .banner-flex { grid-template-columns: 1fr; gap: 20px; }
            .banner-media { display: none; }
            .header-top-inner { flex-wrap: wrap; gap: 14px; }
            .header-search-wrap { order: 3; flex-basis: 100%; }
            .header-quick-btn { margin-left: auto; }
        }

        @media screen and (max-width: 764px) {
            .nav-inner { align-items: flex-start; }
            .nav-side-link { display: none; }
            .anchor-bar { top: 0; }
            .vertical-anchors { position: static; }
            .layout-grid-2col { grid-template-columns: 1fr; }
            .service-grid-list { grid-template-columns: 1fr; }
            .footer-top { flex-direction: column; gap: 24px; padding: 36px 0 24px; }
            .cta-btn-group { flex-direction: column; align-items: center; }
            .footer-bottom span.domain-line { width: 100%; padding-left: 0; }
        }

        @media screen and (max-width: 480px) {
            .header-top-inner { gap: 10px; }
            .header-quick-btn span, .header-quick-btn i + span { display: none; }
            .header-quick-btn { padding: 10px; width: 42px; border-radius: 50%; }
            .footer-cols { gap: 34px; }
        }

        /* 响应式锚点条 */
        @media screen and (max-width: 640px) {
            .banner-flex { grid-template-columns: 1fr; }
            .hot-query { display: none; }
        }

/* roulang page: article */
:root{
  --primary:#1682A6;
  --primary-deep:#0A4F6D;
  --primary-soft:#EAF4F8;
  --secondary:#0A4F6D;
  --accent:#F0A44A;
  --accent-strong:#D98723;
  --body-bg:#FFFFFF;
  --soft-bg:#EEF5F8;
  --text:#1B2A33;
  --text-light:#657F8A;
  --line:#DFE9EE;
  --shadow-sm:0 2px 8px rgba(19,59,72,.04);
  --shadow-md:0 14px 30px rgba(19,59,72,.09);
  --shadow-lg:0 24px 50px rgba(19,59,72,.12);
  --radius:18px;
  --radius-small:12px;
  --radius-pill:999px;
  --content-max:1260px;
  --font:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:160px}
body{
  background:var(--body-bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--primary-deep);text-decoration:none;transition:color .2s ease,border-color .2s ease}
a:hover{color:var(--primary)}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:3px;
  border-radius:4px;
}
ul,ol{list-style:none}
input,button{font-family:inherit}

.container-custom{
  max-width:var(--content-max);
  margin-left:auto;
  margin-right:auto;
  padding-left:1.25rem;
  padding-right:1.25rem;
  width:100%;
}
.section-block{padding:clamp(3.2rem,7vw,5.5rem) 0}
.section-kicker{
  display:inline-flex;
  align-items:center;
  gap:.45rem;
  background:var(--primary-soft);
  color:var(--primary-deep);
  font-size:.85rem;
  font-weight:600;
  letter-spacing:.04em;
  border-radius:var(--radius-pill);
  padding:.15rem .85rem;
  margin-bottom:1.1rem;
}
.section-title{
  font-size:clamp(1.5rem,2.6vw,2.2rem);
  letter-spacing:-.01em;
  color:var(--text);
  line-height:1.35;
  font-weight:700;
  margin-bottom:.8rem;
}
.section-desc{
  color:var(--text-light);
  font-size:1rem;
  max-width:760px;
  line-height:1.9;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5rem;
  border-radius:var(--radius-pill);
  border:1px solid transparent;
  padding:.75rem 1.4rem;
  font-size:.95rem;
  font-weight:600;
  line-height:1.2;
  cursor:pointer;
  transition:transform .25s ease,box-shadow .25s ease,background-color .2s ease,border-color .2s ease,color .2s ease;
}
.btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn:active{transform:translateY(1px);box-shadow:var(--shadow-sm)}
.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn-primary:hover{background:var(--accent-strong);color:#fff;border-color:var(--accent-strong)}
.btn-secondary{
  background:transparent;
  border-color:var(--primary);
  color:var(--primary-deep);
}
.btn-secondary:hover{background:var(--primary);border-color:var(--primary);color:#fff}
.btn-light{
  background:#fff;
  color:var(--primary-deep);
  border-color:#fff;
}

/* ============ Header ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  box-shadow:var(--shadow-sm);
}
.header-top-inner{
  display:flex;
  align-items:center;
  gap:1.25rem;
  padding:.75rem 0;
  flex-wrap:wrap;
}
.site-logo{
  color:var(--primary-deep);
  font-size:1.35rem;
  font-weight:800;
  letter-spacing:-.02em;
  display:inline-flex;
  align-items:center;
  gap:.55rem;
  white-space:nowrap;
  line-height:1.2;
}
.site-logo i{color:var(--accent);font-size:1.3rem}
.site-logo:hover{color:var(--primary)}
.header-search-wrap{flex:1;min-width:300px;max-width:720px;margin-left:auto}
.header-search{
  display:flex;
  background:var(--soft-bg);
  border:1px solid var(--line);
  border-radius:var(--radius-pill);
  overflow:hidden;
  height:42px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.header-search:focus-within{
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(22,130,166,.12);
  background:#fff;
}
.header-search input{
  flex:1;
  min-width:0;
  border:0;
  background:transparent;
  padding:.5rem 1rem;
  color:var(--text);
  font-size:.92rem;
}
.header-search input::placeholder{color:#8fa7b1}
.header-search button{
  width:50px;
  border:none;
  background:transparent;
  color:var(--primary-deep);
  font-size:1rem;
  cursor:pointer;
}
.header-search button:hover{background:var(--primary-soft)}
.hot-query{
  margin-top:.45rem;
  display:flex;
  align-items:center;
  gap:.5rem;
  font-size:.8rem;
  color:var(--text-light);
  overflow:hidden;
  white-space:nowrap;
}
.hot-query a{
  color:var(--text-light);
  padding:.1rem .55rem;
  background:#f6fafb;
  border:1px solid var(--line);
  border-radius:999px;
  white-space:nowrap;
}
.hot-query a:hover{color:var(--primary);border-color:var(--primary)}
.header-quick-btn{
  flex-shrink:0;
  padding:.55rem 1.05rem;
  font-size:.9rem;
  background:var(--primary-deep);
  color:#fff;
  border-color:var(--primary-deep);
}
.header-quick-btn:hover{background:var(--primary);color:#fff;border-color:var(--primary)}

.header-nav{
  border-top:1px solid var(--line);
  background:#fff;
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
}
.nav-list{
  display:flex;
  list-style:none;
  align-items:center;
  gap:.2rem;
  overflow-x:auto;
  flex:1;
  scrollbar-width:none;
}
.nav-list::-webkit-scrollbar{display:none}
.nav-list li{flex-shrink:0}
.nav-list a{
  display:inline-flex;
  align-items:center;
  gap:.4rem;
  padding:.7rem 1.05rem;
  font-size:.94rem;
  font-weight:600;
  color:var(--text);
  border-bottom:3px solid transparent;
  border-radius:0;
}
.nav-list a i{color:var(--primary);font-size:.9rem}
.nav-list a:hover{color:var(--primary);border-bottom-color:var(--primary)}
.nav-list li.is-active a{
  color:var(--primary-deep);
  border-bottom-color:var(--accent);
}
.nav-list li.is-active a i{color:var(--accent)}
.nav-side-link{
  flex-shrink:0;
  font-size:.9rem;
  color:var(--text-light);
  padding:.7rem 0 .7rem .6rem;
  border-left:1px solid var(--line);
  margin-left:.3rem;
}
.nav-side-link:hover{color:var(--primary)}

/* ============ Hero ============ */
.category-hero{
  padding:clamp(3.2rem,7vw,5.5rem) 0 clamp(3rem,6vw,4.8rem);
  background:
    linear-gradient(120deg,rgba(255,255,255,.99) 30%,rgba(238,245,248,.72) 70%,rgba(22,130,166,.25)),
    url('/assets/images/backpic/back-2.png') no-repeat center center / cover;
  border-bottom:1px solid var(--line);
}
.hero-breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:.5rem;
  color:var(--text-light);
  font-size:.88rem;
  margin-bottom:2rem;
}
.hero-breadcrumb a{color:var(--text-light)}
.hero-breadcrumb a:hover{color:var(--primary)}
.hero-breadcrumb .separator{color:#b9ccd4}
.hero-overline{
  color:var(--primary);
  font-weight:700;
  letter-spacing:.06em;
  margin-bottom:1.1rem;
  display:flex;
  align-items:center;
  gap:.5rem;
}
.category-hero h1{
  font-size:clamp(2rem,4vw,3.1rem);
  line-height:1.28;
  letter-spacing:-.02em;
  font-weight:800;
  color:var(--primary-deep);
  max-width:950px;
}
.category-hero .hero-desc{
  max-width:780px;
  margin-top:1.3rem;
  font-size:clamp(1rem,1.6vw,1.12rem);
  color:var(--text);
  line-height:1.9;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:.9rem;
  margin-top:2rem;
}
.hero-note{
  display:flex;
  flex-wrap:wrap;
  gap:.5rem 1rem;
  margin-top:2.2rem;
  color:var(--text-light);
  font-size:.88rem;
}
.hero-note i{color:var(--primary);margin-right:.25rem}

/* ============ Stats band ============ */
.stats-band{
  background:var(--primary-deep);
  color:#fff;
  padding:2.2rem 0;
}
.stats-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1.5rem;
}
.stat-item{text-align:left;padding:.4rem .8rem;border-left:2px solid rgba(255,255,255,.22)}
.stat-num{
  font-size:clamp(1.7rem,2.6vw,2.3rem);
  font-weight:800;
  line-height:1.2;
  color:var(--accent);
  display:block;
  margin-bottom:.25rem;
}
.stat-label{font-size:.92rem;color:rgba(255,255,255,.86);line-height:1.5}

/* ============ TOC section ============ */
.toc-section{
  background:var(--body-bg);
  padding-bottom:clamp(3.5rem,7vw,5.5rem);
}
.toc-layout{
  display:grid;
  grid-template-columns:285px minmax(0,1fr);
  gap:2.2rem;
  align-items:start;
}
.toc-sidebar{
  position:sticky;
  top:172px;
  z-index:5;
}
.toc-card{
  background:var(--soft-bg);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:1.4rem 1.25rem;
  box-shadow:var(--shadow-sm);
}
.toc-card-title{
  font-size:.8rem;
  letter-spacing:.08em;
  color:var(--text-light);
  text-transform:uppercase;
  margin-bottom:1.15rem;
  display:flex;
  align-items:center;
  gap:.5rem;
}
.toc-list a{
  display:flex;
  align-items:center;
  gap:.55rem;
  padding:.52rem .6rem;
  border-radius:10px;
  color:var(--text-light);
  font-weight:500;
  font-size:.9rem;
  transition:background .18s ease,color .18s ease;
  border-left:3px solid transparent;
}
.toc-list a i{color:var(--primary);font-size:.82rem;width:18px;text-align:center}
.toc-list a:hover{
  background:#fff;
  color:var(--primary-deep);
  border-left-color:var(--primary);
}
.toc-list a.active{
  background:#fff;
  color:var(--primary-deep);
  border-left-color:var(--accent);
  font-weight:600;
}
.toc-side-actions{
  margin-top:1rem;
  display:flex;
  gap:.6rem;
  border-top:1px dashed var(--line);
  padding-top:1rem;
}
.toc-side-actions .btn{
  flex:1;
  padding:.55rem .5rem;
  font-size:.82rem;
}

/* Content panels */
.toc-content{
  display:flex;
  flex-direction:column;
  gap:2rem;
}
.service-panel{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:clamp(1.5rem,3vw,2.2rem);
  box-shadow:var(--shadow-sm);
  transition:box-shadow .25s ease,border-color .25s ease;
  scroll-margin-top:180px;
}
.service-panel:hover{
  box-shadow:var(--shadow-md);
  border-color:#d5e3e9;
}
.panel-head{
  display:flex;
  align-items:center;
  gap:.9rem;
  margin-bottom:.9rem;
}
.panel-index{
  background:var(--primary-soft);
  color:var(--primary-deep);
  width:44px;
  height:44px;
  border-radius:13px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight:800;
  font-size:1.1rem;
  flex-shrink:0;
}
.panel-label{
  display:inline-block;
  background:var(--primary-soft);
  color:var(--primary-deep);
  font-size:.75rem;
  letter-spacing:.06em;
  padding:.1rem .7rem;
  border-radius:999px;
  margin-bottom:.3rem;
}
.panel-head h2, .panel-head h3{
  font-size:1.25rem;
  line-height:1.3;
  color:var(--text);
  letter-spacing:-.01em;
}
.panel-copy{color:#394d57;font-size:.98rem;line-height:1.9;margin-bottom:1.1rem}
.panel-copy strong{color:var(--primary-deep)}

.check-list{display:flex;flex-direction:column;gap:.7rem;margin-top:.5rem}
.check-list li{
  display:flex;
  gap:.6rem;
  color:#334751;
  font-size:.96rem;
  line-height:1.7;
}
.check-list li i{color:var(--primary);margin-top:.4rem;font-size:.85rem}

.icon-list-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:1rem;
  margin-top:.8rem;
}
.icon-list-item{
  background:var(--soft-bg);
  border-radius:14px;
  padding:1rem 1.1rem;
  display:flex;
  gap:.7rem;
  align-items:flex-start;
  transition:transform .2s ease,box-shadow .2s ease;
}
.icon-list-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm)}
.icon-list-item i{
  width:34px;
  height:34px;
  background:#fff;
  border-radius:10px;
  color:var(--primary);
  display:flex;
  align-items:center;
  justify-content:center;
  flex-shrink:0;
  font-size:.95rem;
  box-shadow:var(--shadow-sm);
}
.icon-list-item strong{display:block;color:var(--text);font-size:.95rem;margin-bottom:.2rem}
.icon-list-item span{font-size:.84rem;color:var(--text-light);line-height:1.6}

.steps-horizontal{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:.9rem;
  margin:1.2rem 0 .3rem;
}
.step-item{
  background:var(--soft-bg);
  border-radius:14px;
  padding:1rem .9rem;
  position:relative;
}
.step-item .step-num{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:var(--primary);
  color:#fff;
  width:24px;
  height:24px;
  border-radius:999px;
  font-size:.75rem;
  font-weight:700;
  margin-bottom:.55rem;
}
.step-item strong{display:block;font-size:.9rem;color:var(--primary-deep);margin-bottom:.15rem}
.step-item p{font-size:.82rem;color:var(--text-light);line-height:1.55}

.media-row{
  display:grid;
  grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr);
  gap:1.3rem;
  align-items:center;
  margin-top:1.1rem;
}
.media-row img{
  width:100%;
  border-radius:14px;
  box-shadow:var(--shadow-sm);
  object-fit:cover;
  min-height:180px;
  max-height:300px;
}
.media-caption{
  font-size:.78rem;
  color:var(--text-light);
  text-align:center;
  margin-top:.6rem;
  border-bottom:1px solid var(--line);
  padding-bottom:.4rem;
  width:fit-content;
}

.callout-box{
  background:#fffaf2;
  border:1px solid #f4dcc1;
  border-radius:14px;
  padding:1rem 1.2rem;
  display:flex;
  gap:.75rem;
  line-height:1.85;
  font-size:.94rem;
  color:#51422f;
  margin-top:1rem;
}
.callout-box i{color:var(--accent);font-size:1rem;margin-top:.3rem}

/* ============ Scenario ============ */
.scenario-section{
  background:var(--soft-bg);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.scenario-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:1.6rem;
  margin-top:2rem;
}
.scenario-card{
  background:#fff;
  border-radius:var(--radius);
  padding:1.5rem;
  border:1px solid var(--line);
  box-shadow:var(--shadow-sm);
}
.scenario-card i{
  color:var(--accent);
  font-size:1.4rem;
  margin-bottom:.7rem;
}
.scenario-card h3{font-size:1.1rem;color:var(--primary-deep);margin-bottom:.5rem}
.scenario-card p{color:var(--text-light);font-size:.93rem;line-height:1.85}
.scenario-card ul{margin-top:.7rem;display:flex;flex-direction:column;gap:.35rem}
.scenario-card li{
  color:#4a5f69;
  font-size:.9rem;
  display:flex;
  gap:.45rem;
}
.scenario-card li::before{
  content:"\f105";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  color:var(--primary);
}

/* ============ FAQ ============ */
.faq-section{
  background:var(--body-bg);
  border-bottom:1px solid var(--line);
}
.faq-grid{
  max-width:900px;
  margin-top:1.8rem;
  display:flex;
  flex-direction:column;
  gap:.85rem;
}
.faq-item{
  border:1px solid var(--line);
  background:#fff;
  border-radius:16px;
  overflow:hidden;
  transition:box-shadow .2s ease,border-color .2s ease;
}
.faq-item:hover{border-color:#c8dde4;box-shadow:var(--shadow-sm)}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  justify-content:space-between;
  gap:1rem;
  align-items:center;
  padding:1rem 1.25rem;
  font-weight:600;
  color:var(--text);
  font-size:.98rem;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary i{
  color:var(--primary);
  transition:transform .25s ease;
  font-size:.9rem;
}
.faq-item[open] summary i{transform:rotate(45deg)}
.faq-answer{
  border-top:1px solid var(--line);
  padding:1rem 1.25rem 1.25rem;
  background:#fbfdfe;
  color:#4a5f69;
  font-size:.93rem;
  line-height:1.9;
}

/* ============ CTA ============ */
.cta-band{
  background:
    linear-gradient(rgba(10,79,109,.9),rgba(10,79,109,.9)),
    url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
  color:#fff;
  padding:clamp(3rem,6vw,4.6rem) 0;
}
.cta-inner{
  max-width:800px;
  text-align:center;
  margin:0 auto;
}
.cta-inner h2{
  font-size:clamp(1.6rem,3vw,2.5rem);
  color:#fff;
  letter-spacing:-.01em;
  line-height:1.35;
}
.cta-inner p{
  color:rgba(255,255,255,.86);
  margin:1rem auto 1.7rem;
  font-size:1rem;
  line-height:1.9;
  max-width:660px;
}
.cta-actions{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:.9rem;
}
.cta-actions .btn-primary{background:var(--accent);border-color:var(--accent)}
.cta-actions .btn-primary:hover{background:var(--accent-strong);border-color:var(--accent-strong)}
.cta-actions .btn-light:hover{color:var(--primary-deep)}

/* ============ Footer ============ */
.site-footer{
  background:var(--primary-deep);
  color:rgba(255,255,255,.86);
  padding:clamp(2.8rem,6vw,4.5rem) 0 0;
  font-size:.95rem;
}
.site-footer .site-logo{color:#fff;font-size:1.35rem}
.site-footer .site-logo i{color:var(--accent)}
.site-footer a{color:rgba(255,255,255,.78);transition:color .2s ease}
.site-footer a:hover{color:#fff}
.footer-top{
  display:grid;
  grid-template-columns:1.6fr 1fr .9fr;
  gap:2.4rem;
  padding-bottom:2.4rem;
  border-bottom:1px solid rgba(255,255,255,.13);
}
.footer-brand p{
  margin-top:1rem;
  max-width:460px;
  color:rgba(255,255,255,.66);
  line-height:1.9;
  font-size:.9rem;
}
.footer-title{
  color:#fff;
  font-size:1rem;
  font-weight:700;
  margin-bottom:.9rem;
  display:flex;
  align-items:center;
  gap:.5rem;
}
.footer-title::after{
  content:"";
  width:22px;
  height:3px;
  background:var(--accent);
  border-radius:4px;
}
.footer-cols{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:1.5rem;
}
.footer-links li{margin-bottom:.6rem}
.footer-links a{
  display:inline-flex;
  gap:.5rem;
  align-items:center;
  color:rgba(255,255,255,.72);
}
.footer-links a:hover{color:#fff}
.footer-links a i{font-size:.68rem;color:var(--accent)}
.footer-col p{
  color:rgba(255,255,255,.66);
  font-size:.85rem;
  line-height:1.8;
}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:1rem;
  flex-wrap:wrap;
  padding:1.2rem 0;
  color:rgba(255,255,255,.6);
  font-size:.82rem;
}
.footer-bottom a{color:rgba(255,255,255,.7)}
.footer-bottom a:hover{color:#fff}

/* ============ Responsive ============ */
@media (max-width:1023px){
  .header-top-inner{row-gap:.8rem}
  .header-search-wrap{order:3;max-width:none;width:100%}
  .toc-layout{grid-template-columns:1fr}
  .toc-sidebar{
    position:static;
    z-index:auto;
  }
  .toc-card{
    overflow-x:auto;
    padding:1rem;
  }
  .toc-list{
    display:flex;
    gap:.4rem;
    min-width:max-content;
    padding-bottom:.2rem;
  }
  .toc-list a{
    display:inline-flex;
    white-space:nowrap;
    border-left:0;
    border-radius:999px;
    padding:.4rem .9rem;
    background:#fff;
  }
  .toc-list a:hover{
    border-left:0;
    color:var(--primary);
  }
  .toc-side-actions{display:none}
  .steps-horizontal{grid-template-columns:1fr 1fr}
  .footer-top{grid-template-columns:1fr}
  .footer-cols{grid-template-columns:1fr 1fr;max-width:520px}
}

@media (max-width:767px){
  html{scroll-padding-top:148px}
  .header-nav .nav-side-link{display:none}
  .nav-list a{padding:.6rem .85rem}
  .category-hero .hero-desc{font-size:1rem}
  .stats-grid{grid-template-columns:1fr 1fr;gap:.8rem}
  .stat-item{padding:.4rem .6rem}
  .icon-list-row{grid-template-columns:1fr}
  .steps-horizontal{grid-template-columns:1fr 1fr}
  .media-row{grid-template-columns:1fr}
  .scenario-grid{grid-template-columns:1fr}
  .footer-cols{grid-template-columns:1fr 1fr}
  .hot-query span,.hot-query a{font-size:.7rem}
}

@media (max-width:520px){
  .container-custom{padding-left:1rem;padding-right:1rem}
  .header-top-inner{gap:.8rem}
  .site-logo{font-size:1.13rem}
  .site-logo i{font-size:1.05rem}
  .header-search-wrap{min-width:0}
  .header-search input{font-size:.85rem}
  .hot-query a:nth-child(n+4){display:none}
  .header-quick-btn{padding:.45rem .7rem;font-size:.8rem}
  .category-hero h1{letter-spacing:-.015em}
  .hero-actions .btn{width:100%}
  .stats-grid{grid-template-columns:1fr 1fr;gap:.5rem}
  .stat-item{padding:.35rem .2rem}
  .stat-num{font-size:1.5rem}
  .stat-label{font-size:.8rem}
  .service-panel{padding:1.2rem}
  .panel-index{width:36px;height:36px;font-size:1rem;border-radius:10px}
  .steps-horizontal{grid-template-columns:1fr}
  .footer-top{gap:1.7rem}
  .footer-cols{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;text-align:center}
  .toc-card{scroll-snap-type:x proximity}
  .toc-list a{scroll-snap-align:start}
}

/* roulang page: category2 */
:root{
  --primary:#1682A6;
  --primary-dark:#0A4F6D;
  --primary-soft:#E5F1F5;
  --accent:#F0A44A;
  --accent-hover:#F7B955;
  --page:#FFFFFF;
  --soft:#EEF5F8;
  --text:#1B2A33;
  --muted:#657F8A;
  --border:#DFE9EE;
  --radius-lg:18px;
  --radius-md:12px;
  --radius-sm:8px;
  --shadow-sm:0 2px 8px rgba(19,59,72,.04);
  --shadow-md:0 14px 30px rgba(19,59,72,.09);
  --shadow-lg:0 24px 50px rgba(19,59,72,.12);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--page);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,sans-serif;
  line-height:1.8;
  font-size:1rem;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,figure,blockquote{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img{display:block;max-width:100%;height:auto;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,border-color .2s ease,background .2s ease;}
a:hover{color:var(--primary-dark);}
button,input,select,textarea{font-family:inherit;}
summary{list-style:none;}
summary::-webkit-details-marker{display:none;}
:focus-visible{outline:3px solid rgba(22,130,166,.55);outline-offset:2px;border-radius:4px;}
.container-custom{
  width:min(1240px,100%);
  margin-left:auto;
  margin-right:auto;
  padding-left:clamp(1rem,3vw,2rem);
  padding-right:clamp(1rem,3vw,2rem);
}
.grid-container{max-width:1240px;}
main{display:block;}
.section{padding:clamp(3.5rem,7vw,6rem) 0;}
.section-soft{background:var(--soft);}
.section-white{background:#fff;}
.section-head{max-width:820px;margin-bottom:clamp(2rem,4vw,3rem);}
.section-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:.4rem;
  color:var(--primary);
  font-size:.8rem;
  font-weight:800;
  letter-spacing:.08em;
  margin-bottom:.6rem;
}
.section-head h2{
  font-size:clamp(1.5rem,2.6vw,2.2rem);
  line-height:1.3;
  letter-spacing:-.01em;
  font-weight:900;
  color:var(--primary-dark);
  margin-bottom:.85rem;
}
.section-lead{
  font-size:1.02rem;
  color:var(--muted);
  line-height:1.9;
  max-width:800px;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.45rem;
  border:1px solid transparent;
  border-radius:999px;
  padding:.78rem 1.3rem;
  font-weight:700;
  font-size:.95rem;
  line-height:1.2;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-sm{padding:.42rem .85rem;font-size:.84rem;}
.btn-primary{background:var(--accent);color:var(--primary-dark);border-color:var(--accent);}
.btn-primary:hover{background:var(--accent-hover);color:var(--primary-dark);transform:translateY(-2px);box-shadow:0 12px 24px rgba(224,140,50,.2);}
.btn-dark{background:var(--primary-dark);color:#fff;border-color:var(--primary-dark);}
.btn-dark:hover{background:#0d6285;color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-md);}
.btn-outline{background:#fff;color:var(--primary-dark);border-color:#B8D4DC;}
.btn-outline:hover{background:var(--primary);color:#fff;border-color:var(--primary);transform:translateY(-2px);box-shadow:var(--shadow-md);}
.btn-line{background:rgba(255,255,255,.06);color:#fff;border-color:rgba(255,255,255,.65);}
.btn-line:hover{background:#fff;color:var(--primary-dark);border-color:#fff;transform:translateY(-2px);box-shadow:0 12px 28px rgba(0,0,0,.12);}

.site-header{
  position:sticky;
  top:0;
  z-index:300;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(10px);
  box-shadow:0 2px 12px rgba(19,59,72,.05);
}
.header-top{background:#fff;}
.header-top-inner{
  display:flex;
  align-items:center;
  gap:1rem;
  padding-top:.8rem;
  padding-bottom:.75rem;
}
.site-logo{
  display:inline-flex;
  align-items:center;
  gap:.35rem;
  font-size:1.32rem;
  font-weight:900;
  letter-spacing:-.02em;
  color:var(--primary-dark);
  white-space:nowrap;
}
.site-logo i{color:var(--primary);font-size:1.35rem;}
.header-search-wrap{flex:1;max-width:620px;min-width:0;margin:0 auto;}
.header-search{
  display:flex;
  align-items:center;
  gap:.6rem;
  background:#F4F8FA;
  border:1px solid var(--border);
  border-radius:999px;
  padding:5px 6px 5px 18px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.header-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(22,130,166,.1);}
.header-search input{
  flex:1;
  min-width:0;
  border:none;
  outline:none;
  background:transparent;
  font-size:.9rem;
  color:var(--text);
  padding:.3rem 0;
}
.header-search button{
  width:34px;
  height:34px;
  border:0;
  border-radius:999px;
  background:var(--primary);
  color:#fff;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  cursor:pointer;
  transition:background .2s ease,transform .2s ease;
}
.header-search button:hover{background:var(--primary-dark);}
.hot-query{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:.2rem .4rem;
  margin-top:.45rem;
  font-size:.78rem;
  color:var(--muted);
}
.hot-query span{color:var(--muted);}
.hot-query a{
  color:var(--primary);
  padding:0 .35rem;
  border-radius:999px;
  line-height:1.6;
}
.hot-query a:hover{color:var(--accent);}
.header-quick-btn{flex:0 0 auto;white-space:nowrap;}
.header-nav{background:var(--primary-dark);}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
}
.nav-list{
  display:flex;
  align-items:center;
  gap:.2rem;
  margin:0;
  padding:0;
  list-style:none;
}
.nav-list a{
  display:inline-flex;
  align-items:center;
  gap:.4rem;
  padding:.95rem .7rem;
  color:#DCEFF4;
  font-size:.96rem;
  font-weight:600;
  border-bottom:3px solid transparent;
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.nav-list li.is-active a{
  color:#fff;
  background:rgba(255,255,255,.08);
  border-bottom-color:var(--accent);
}
.nav-list a:hover{color:#fff;background:rgba(255,255,255,.05);}
.nav-list a i{color:var(--accent);font-size:.85rem;}
.nav-list li.is-active a i{color:var(--accent-hover);}
.nav-side-link{
  display:inline-flex;
  align-items:center;
  gap:.4rem;
  color:#fff;
  font-size:.92rem;
  font-weight:700;
  padding:.7rem .5rem;
  white-space:nowrap;
  border-bottom:2px solid transparent;
}
.nav-side-link i{color:var(--accent);}
.nav-side-link:hover{color:var(--accent-hover);border-bottom-color:var(--accent);}

.page-hero{
  position:relative;
  padding:clamp(3.8rem,8vw,6.2rem) 0 clamp(3rem,6vw,4.5rem);
  color:#fff;
  background-color:var(--primary-dark);
  background-image:linear-gradient(120deg,rgba(7,46,65,.92),rgba(10,79,109,.82),rgba(22,130,166,.7)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.hero-inner{position:relative;z-index:2;}
.hero-breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:.5rem;
  color:#C8E3EA;
  font-size:.86rem;
  margin-bottom:1.1rem;
}
.hero-breadcrumb i{color:var(--accent);font-size:.7rem;}
.page-hero .hero-tag{
  display:inline-flex;
  align-items:center;
  gap:.35rem;
  background:rgba(240,164,74,.16);
  border:1px solid rgba(240,164,74,.4);
  color:#FFD9A8;
  padding:.2rem .7rem;
  border-radius:999px;
  font-size:.78rem;
  font-weight:700;
  margin-bottom:1rem;
}
.page-hero h1{
  font-size:clamp(2rem,4vw,3rem);
  font-weight:900;
  line-height:1.22;
  color:#fff;
  letter-spacing:-.015em;
  max-width:18em;
  text-shadow:0 2px 14px rgba(0,0,0,.12);
}
.hero-lead{
  max-width:820px;
  margin-top:1.2rem;
  font-size:1.08rem;
  line-height:1.9;
  color:#E6F3F6;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:.8rem;
  margin-top:2rem;
}
.hero-mini-note{
  margin-top:1.8rem;
  color:#BEDBE4;
  font-size:.82rem;
  display:flex;
  align-items:center;
  gap:.35rem;
}
.hero-mini-note i{color:var(--accent);}

.directory-shell{
  background:#fff;
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);
  padding:clamp(1.2rem,3vw,2rem);
}
.directory-layout{
  display:grid;
  grid-template-columns:270px minmax(0,1fr);
  gap:clamp(1.2rem,3vw,2.5rem);
  align-items:start;
}
.side-anchor{
  position:sticky;
  top:158px;
  background:var(--soft);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  overflow:hidden;
}
.side-anchor-title{
  padding:1rem 1.15rem;
  font-weight:800;
  color:var(--primary-dark);
  background:#fff;
  border-bottom:1px solid var(--border);
  display:flex;
  align-items:center;
  gap:.5rem;
  font-size:.95rem;
}
.side-anchor-title i{color:var(--primary);}
.anchor-list a{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:.5rem;
  padding:.78rem 1.15rem;
  color:var(--text);
  font-weight:600;
  border-left:3px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.anchor-list a i{color:var(--muted);font-size:.8rem;transition:transform .2s ease;}
.anchor-list a:hover{
  color:var(--primary);
  background:rgba(22,130,166,.08);
  border-left-color:var(--primary);
}
.anchor-list a:hover i{transform:translateX(3px);}
.dir-main{display:flex;flex-direction:column;gap:1.25rem;}
.dir-card{
  display:grid;
  grid-template-columns:58px minmax(0,1fr) auto;
  align-items:center;
  gap:1.1rem;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);
  padding:1.45rem 1.4rem;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  scroll-margin-top:160px;
}
.dir-card:hover{
  transform:translateY(-3px);
  box-shadow:var(--shadow-md);
  border-color:#A9CED9;
}
.dir-icon{
  width:58px;
  height:58px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:17px;
  background:var(--primary-soft);
  color:var(--primary-dark);
  font-size:1.35rem;
  transition:background .2s ease,color .2s ease;
}
.dir-card:hover .dir-icon{background:var(--primary);color:#fff;}
.dir-card-title{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:.7rem;
  margin-bottom:.3rem;
}
.dir-card-title h3{font-size:1.13rem;font-weight:800;color:var(--primary-dark);line-height:1.4;}
.dir-card p{color:var(--muted);font-size:.94rem;line-height:1.85;max-width:780px;}
.dir-tags{display:flex;flex-wrap:wrap;gap:.35rem;margin-top:.7rem;}
.tag{
  display:inline-flex;
  align-items:center;
  gap:.3rem;
  background:var(--soft);
  border:1px solid var(--border);
  color:var(--primary-dark);
  font-size:.76rem;
  font-weight:600;
  padding:.1rem .65rem;
  border-radius:999px;
}
.tag i{color:var(--primary);font-size:.7rem;}
.dir-link{
  display:inline-flex;
  align-items:center;
  gap:.4rem;
  white-space:nowrap;
  font-weight:800;
  color:var(--primary);
  border-bottom:2px solid transparent;
  padding:.2rem 0;
}
.dir-link i{transition:transform .2s ease;}
.dir-link:hover{color:var(--primary-dark);}
.dir-link:hover i{transform:translateX(4px);}

.metric-card{
  height:100%;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:1.6rem 1.4rem;
  box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease;
}
.metric-card:hover{
  transform:translateY(-3px);
  box-shadow:var(--shadow-md);
}
.metric-icon{
  width:42px;
  height:42px;
  border-radius:13px;
  background:var(--primary-soft);
  color:var(--primary-dark);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:1rem;
  margin-bottom:.8rem;
}
.metric-value{
  display:block;
  font-size:1.9rem;
  font-weight:900;
  color:var(--primary-dark);
  line-height:1.2;
  letter-spacing:-.02em;
}
.metric-value span{color:var(--accent);font-size:1.1rem;margin-left:2px;}
.metric-label{
  display:block;
  margin-top:.25rem;
  font-weight:800;
  color:var(--text);
  font-size:1rem;
}
.metric-note{
  margin-top:.45rem;
  color:var(--muted);
  font-size:.88rem;
  line-height:1.7;
}

.step-card{
  height:100%;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);
  padding:1.8rem 1.5rem;
  position:relative;
  transition:transform .2s ease,box-shadow .2s ease;
}
.step-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-md);
}
.step-num{
  font-size:1.1rem;
  font-weight:900;
  color:var(--accent);
  letter-spacing:.02em;
  display:block;
  margin-bottom:1rem;
}
.step-num em{
  font-style:normal;
  color:#CDE0E5;
  font-weight:800;
  margin-left:.5rem;
}
.step-card h3{font-size:1.12rem;color:var(--primary-dark);font-weight:800;margin-bottom:.5rem;}
.step-card p{color:var(--muted);font-size:.93rem;line-height:1.8;}
.step-arrow{position:absolute;top:26px;right:1rem;color:#C4DDE4;}

.feature-visual{
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow-lg);
  aspect-ratio:4/3;
  background:#fff;
}
.feature-visual img{width:100%;height:100%;object-fit:cover;}
.feature-list{margin-top:.4rem;}
.feature-list li{
  display:flex;
  align-items:flex-start;
  gap:.7rem;
  padding:.7rem 0;
  border-bottom:1px solid var(--border);
}
.feature-list li:last-child{border-bottom:0;}
.feature-list i{
  color:var(--primary);
  margin-top:.25rem;
  width:24px;
  height:24px;
  border-radius:50%;
  background:var(--primary-soft);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:.75rem;
  flex:0 0 24px;
}
.feature-list strong{color:var(--text);font-weight:800;display:block;}
.feature-list p{color:var(--muted);font-size:.9rem;margin-top:.1rem;}

.callout-tip{
  display:flex;
  gap:1rem;
  align-items:flex-start;
  background:#FFF8ED;
  border:1px solid #F2D6A7;
  border-radius:var(--radius-lg);
  padding:1.2rem 1.4rem;
  margin-top:1.2rem;
}
.callout-tip i{color:var(--accent);font-size:1.3rem;margin-top:.2rem;}
.callout-tip strong{color:var(--primary-dark);}
.callout-tip p{color:#6B5C45;font-size:.92rem;margin-top:.2rem;}
.faq-list{max-width:940px;margin-left:auto;margin-right:auto;}
.faq-item{
  background:#fff;
  border:1px solid var(--border);
  border-radius:16px;
  margin-bottom:.85rem;
  overflow:hidden;
  box-shadow:var(--shadow-sm);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:#B8D4DC;box-shadow:var(--shadow-md);}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
  padding:1.1rem 1.3rem;
  cursor:pointer;
  font-weight:800;
  color:var(--text);
  font-size:.98rem;
}
.faq-item[open] summary{color:var(--primary);}
.faq-item summary::after{
  content:"\f078";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  font-size:.8rem;
  color:var(--primary);
  transition:transform .2s ease;
  flex:0 0 auto;
}
.faq-item[open] summary::after{content:"\f077";}
.faq-answer{
  padding:0 1.3rem 1.2rem;
  color:var(--muted);
  font-size:.94rem;
  line-height:1.85;
  border-top:1px dashed var(--border);
  margin-left:1.3rem;
  margin-right:1.3rem;
}
.faq-answer p{margin-top:.8rem;}

.cta-banner{
  position:relative;
  background:var(--primary-dark);
  border-radius:22px;
  padding:clamp(2rem,4.5vw,3.6rem);
  color:#fff;
  overflow:hidden;
  box-shadow:var(--shadow-lg);
  background-image:linear-gradient(115deg,rgba(7,45,64,.92),rgba(10,79,109,.85)),url('/assets/images/backpic/back-3.webp');
  background-size:cover;
  background-position:center;
}
.cta-copy h2{
  color:#fff;
  font-size:clamp(1.5rem,3vw,2.2rem);
  font-weight:900;
  line-height:1.35;
  letter-spacing:-.01em;
  max-width:15em;
}
.cta-copy p{color:#D7EBF1;font-size:1rem;margin-top:.9rem;max-width:680px;line-height:1.9;}
.cta-actions{display:flex;flex-wrap:wrap;gap:.85rem;margin-top:1.8rem;}

.site-footer{
  background:var(--primary-dark);
  color:#CFE5EC;
  margin-top:0;
}
.footer-top{
  display:grid;
  grid-template-columns:1.5fr 1fr minmax(190px,.7fr);
  gap:clamp(1.6rem,4vw,3rem);
  padding:2.8rem 0 2rem;
}
.site-footer .site-logo{color:#fff;font-size:1.3rem;}
.site-footer .site-logo i{color:#F6C98A;}
.footer-brand p{
  font-size:.9rem;
  line-height:1.9;
  color:#BFDCE3;
  margin-top:1rem;
  max-width:620px;
}
.footer-cols{display:flex;gap:1.8rem;}
.footer-cols>div{flex:1;}
.footer-title{
  color:#fff;
  font-size:1rem;
  font-weight:800;
  margin-bottom:1rem;
  letter-spacing:.02em;
}
.footer-links li{margin-bottom:.4rem;}
.footer-links a,.footer-col a{
  color:#BFDCE3;
  font-size:.9rem;
  transition:color .2s ease,padding-left .2s ease;
}
.footer-links a:hover,.footer-col a:hover{color:var(--accent);padding-left:3px;}
.footer-col p,.footer-col div{color:#BFDCE3;font-size:.9rem;line-height:1.8;}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  align-items:center;
  flex-wrap:wrap;
  gap:.8rem;
  border-top:1px solid rgba(255,255,255,.18);
  padding:1.2rem 0 1.5rem;
  font-size:.82rem;
  color:#AFCED7;
}
.footer-bottom a{color:#CFE5EC;word-break:break-all;}
.footer-bottom a:hover{color:var(--accent);}
.domain-line{color:#AFCED7;}

@media (max-width:1120px){
  .directory-layout{grid-template-columns:1fr;}
  .side-anchor{
    position:static;
    overflow-x:auto;
    display:block;
    white-space:nowrap;
  }
  .side-anchor-title{display:none;}
  .anchor-list{display:flex;gap:.25rem;padding:.5rem;}
  .anchor-list a{
    border-left:0;
    border-bottom:3px solid transparent;
    border-radius:999px;
    padding:.55rem .95rem;
    background:#fff;
    white-space:nowrap;
    font-size:.9rem;
  }
  .anchor-list a:hover{border-left:0;background:#fff;border-bottom-color:var(--primary);}
  .dir-card{grid-template-columns:58px minmax(0,1fr);}
  .dir-link{grid-column:2;}
}
@media (max-width:1023px){
  .header-top-inner{flex-wrap:wrap;row-gap:.45rem;}
  .header-search-wrap{
    order:3;
    flex:1 0 100%;
    max-width:none;
    margin:.4rem 0 0;
  }
  .header-nav{overflow-x:auto;-webkit-overflow-scrolling:touch;}
  .nav-list{
    flex-wrap:nowrap;
    min-width:max-content;
    justify-content:flex-start;
  }
  .nav-list a{
    padding-top:.72rem;
    padding-bottom:.72rem;
    white-space:nowrap;
  }
  .nav-side-link{
    flex:0 0 auto;
    padding:.72rem .4rem .72rem .9rem;
    border-left:1px solid rgba(255,255,255,.18);
    font-size:.85rem;
  }
  .nav-side-link i{display:none;}
  .footer-top{grid-template-columns:1fr;}
}
@media (max-width:640px){
  .header-top-inner{gap:.55rem;}
  .site-logo{font-size:1.16rem;}
  .site-logo i{font-size:1.15rem;}
  .header-quick-btn{padding:.5rem .75rem;font-size:.78rem;}
  .header-quick-btn i{margin-right:.15rem;}
  .hot-query{display:none;}
  .header-search-wrap{padding-top:.2rem;}
  .hero-actions .btn{width:auto;}
  .page-hero h1{letter-spacing:-.01em;}
  .dir-card{grid-template-columns:1fr;gap:.8rem;}
  .dir-icon{width:50px;height:50px;font-size:1.1rem;}
  .dir-link{grid-column:auto;}
  .dir-card-title h3{font-size:1.08rem;}
  .section-head h2{font-size:1.35rem;}
  .metric-value{font-size:1.5rem;}
  .cta-banner{border-radius:18px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:.3rem;}
}
@media (prefers-reduced-motion:reduce){
  *{scroll-behavior:auto!important;transition:none!important;}
}

/* roulang page: category3 */
:root {
  --primary: #1682A6;
  --primary-deep: #0A4F6D;
  --primary-soft: #E4F1F6;
  --accent: #F0A44A;
  --accent-deep: #C97D2B;
  --accent-soft: #FDF1DC;
  --bg-page: #FFFFFF;
  --bg-alt: #EEF5F8;
  --text-main: #1B2A33;
  --text-soft: #657F8A;
  --line: #DFE9EE;
  --radius-lg: 18px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --shadow-xs: 0 2px 8px rgba(19, 59, 72, .04);
  --shadow-md: 0 14px 30px rgba(19, 59, 72, .08);
  --shadow-lg: 0 24px 50px rgba(19, 59, 72, .12);
  --font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, sans-serif;
  --container: 1240px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-family);
  background: var(--bg-page);
  color: var(--text-main);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

ul, ol {
  padding: 0;
  list-style: none;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color .25s ease, background .25s ease, box-shadow .25s ease, transform .25s ease, border-color .25s ease;
}

button, input, summary {
  font-family: inherit;
}

input {
  outline: none;
}

a:focus-visible,
button:focus-visible,
summary:focus-visible,
input:focus-visible {
  outline: 3px solid rgba(22, 130, 166, .3);
  outline-offset: 2px;
}

.container-custom,
.grid-container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: clamp(3.5rem, 7vw, 5.8rem) 0;
}

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

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 10px;
}

.section-eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
}

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

.section-title {
  font-size: clamp(1.5rem, 2.6vw, 2.2rem);
  letter-spacing: -.01em;
  line-height: 1.35;
  color: var(--text-main);
  margin-bottom: 12px;
}

.section-desc {
  color: var(--text-soft);
  font-size: 1rem;
}

/* ========== Header ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: #fff;
  box-shadow: 0 2px 10px rgba(19, 59, 72, .05);
}

.header-top {
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.header-top-inner {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 72px;
}

.site-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -.02em;
  color: var(--primary-deep);
  white-space: nowrap;
}

.site-logo i {
  color: var(--primary);
  font-size: 24px;
}

.header-search-wrap {
  flex: 1;
  max-width: 620px;
  margin-left: auto;
}

.header-search {
  display: flex;
  align-items: center;
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 2px 2px 2px 16px;
  min-height: 40px;
  transition: border-color .25s ease, box-shadow .25s ease;
}

.header-search:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(22, 130, 166, .08);
}

.header-search input {
  flex: 1;
  min-width: 0;
  border: 0;
  background: transparent;
  font-size: .92rem;
  color: var(--text-main);
}

.header-search input::placeholder {
  color: var(--text-soft);
}

.header-search button {
  width: 34px;
  height: 34px;
  border: 0;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
  cursor: pointer;
  font-size: .9rem;
  transition: background .25s ease, transform .25s ease;
}

.header-search button:hover {
  background: var(--primary-deep);
  transform: scale(1.02);
}

.hot-query {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 8px;
  font-size: .78rem;
  color: var(--text-soft);
  white-space: nowrap;
  overflow: hidden;
}

.hot-query span {
  color: var(--text-main);
  font-weight: 600;
}

.hot-query a {
  background: var(--bg-alt);
  border: 1px solid var(--line);
  color: var(--primary-deep);
  border-radius: 999px;
  padding: 2px 10px;
  line-height: 1.4;
}

.hot-query a:hover {
  background: var(--primary-soft);
  border-color: rgba(22, 130, 166, .4);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 999px;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background .25s ease, color .25s ease, border-color .25s ease, box-shadow .25s ease, transform .25s ease;
}

.btn-primary {
  background: var(--accent);
  color: var(--primary-deep);
}

.btn-primary:hover {
  background: #ffbe6f;
  transform: translateY(-2px);
}

.btn-outline {
  background: #fff;
  color: var(--primary-deep);
  border-color: rgba(22, 130, 166, .35);
}

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

.btn-small {
  min-height: 38px;
  padding: 0 16px;
  font-size: .86rem;
}

.btn-medium {
  min-height: 46px;
  padding: 0 24px;
  font-size: .95rem;
}

.btn-large {
  min-height: 52px;
  padding: 0 30px;
  font-size: 1.05rem;
}

.header-quick-btn {
  white-space: nowrap;
}

.header-nav {
  background: #fff;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: none;
}

.nav-list::-webkit-scrollbar {
  display: none;
}

.nav-list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-main);
  font-size: .95rem;
  font-weight: 600;
  padding: 13px 14px;
  border-bottom: 3px solid transparent;
  white-space: nowrap;
}

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

.nav-list li.is-active a {
  color: var(--primary-deep);
  border-bottom-color: var(--accent);
  background: linear-gradient(180deg, rgba(22, 130, 166, 0), var(--accent-soft));
}

.nav-side-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary-soft);
  color: var(--primary-deep);
  border: 1px solid rgba(22, 130, 166, .2);
  border-radius: 999px;
  padding: 8px 14px;
  font-size: .84rem;
  font-weight: 700;
  white-space: nowrap;
}

.nav-side-link:hover {
  background: var(--primary);
  color: #fff;
}

/* ========== Hero ========== */
.category-hero {
  position: relative;
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(110deg, rgba(255, 255, 255, .98) 0%, rgba(238, 245, 248, .92) 45%, rgba(238, 245, 248, .64) 100%),
    url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  padding: clamp(3rem, 7vw, 6rem) 0 clamp(2.8rem, 6vw, 5rem);
}

.category-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(380px, .94fr);
  gap: 44px;
  align-items: center;
}

.hero-copy {
  max-width: 760px;
}

.breadcrumb-line {
  font-size: .82rem;
  color: var(--text-soft);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

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

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

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: var(--accent-soft);
  border: 1px solid rgba(240, 164, 74, .4);
  color: var(--accent-deep);
  font-size: .84rem;
  font-weight: 700;
  border-radius: 999px;
  padding: 6px 14px;
  margin-bottom: 18px;
}

.hero-h1 {
  font-size: clamp(2rem, 4vw, 3.05rem);
  line-height: 1.25;
  letter-spacing: -.02em;
  color: var(--primary-deep);
  margin-bottom: 18px;
}

.hero-subtitle {
  color: var(--text-main);
  font-size: 1.02rem;
  line-height: 1.9;
  max-width: 640px;
  margin-bottom: 26px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 22px;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.content-tag {
  background: #fff;
  border: 1px solid var(--line);
  color: var(--primary-deep);
  border-radius: 999px;
  padding: 4px 13px;
  font-size: .8rem;
  font-weight: 600;
}

.content-tag i {
  margin-right: 4px;
  color: var(--primary);
}

.hero-stack {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  padding-top: 10px;
}

.stack-card {
  width: 86%;
  background: #fff;
  border-radius: 20px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  border: 1px solid #fff;
  position: relative;
}

.stack-card + .stack-card {
  margin-top: -34px;
}

.stack-card img {
  max-height: 180px;
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 16 / 9;
  min-height: 150px;
}

.stack-meta {
  padding: 14px 16px 16px;
}

.stack-meta span {
  display: block;
  font-size: .78rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 2px;
}

.stack-meta p {
  font-size: .9rem;
  color: var(--text-main);
  line-height: 1.5;
}

.stack-1 {
  margin-left: 4%;
  z-index: 3;
}

.stack-2 {
  width: 70%;
  margin-top: -40px;
  margin-left: auto;
  z-index: 2;
}

.stack-2 img {
  aspect-ratio: 4 / 3;
}

.stack-3 {
  width: 74%;
  margin-top: -36px;
  margin-left: -2%;
  z-index: 1;
}

.stack-3 img {
  aspect-ratio: 4 / 3;
}

/* ========== Snapshot ========== */
.snapshot-section {
  background: #fff;
}

.snapshot-grid {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  gap: 28px;
  align-items: stretch;
}

.guide-panel {
  position: relative;
  background: var(--primary-deep);
  border-radius: var(--radius-lg);
  padding: 2rem 2rem 1.8rem;
  color: #fff;
  overflow: hidden;
}

.guide-panel::after {
  content: "";
  position: absolute;
  width: 280px;
  height: 280px;
  right: -120px;
  bottom: -120px;
  border-radius: 50%;
  border: 30px solid rgba(255, 255, 255, .06);
}

.guide-panel-kicker {
  font-size: .78rem;
  letter-spacing: .16em;
  color: rgba(255, 255, 255, .72);
  text-transform: uppercase;
  font-weight: 700;
  margin-bottom: 12px;
  display: block;
}

.guide-panel h2 {
  color: #fff;
  font-size: clamp(1.25rem, 2vw, 1.8rem);
  line-height: 1.4;
  letter-spacing: -.01em;
  margin-bottom: 22px;
}

.guide-panel-list {
  display: grid;
  gap: 12px;
}

.guide-panel-list li {
  display: flex;
  gap: 14px;
  background: rgba(255, 255, 255, .08);
  border-radius: 14px;
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, .1);
}

.guide-panel-list .guide-mark {
  flex: 0 0 34px;
  width: 34px;
  height: 34px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--primary-deep);
  font-weight: 800;
  font-size: .84rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.guide-panel-list p {
  color: rgba(255, 255, 255, .9);
  font-size: .92rem;
  line-height: 1.75;
}

.guide-panel-note {
  margin-top: 20px;
  font-size: .84rem;
  color: rgba(255, 255, 255, .72);
  border-top: 1px solid rgba(255, 255, 255, .15);
  padding-top: 14px;
}

.topic-list-panel {
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(1.4rem, 3vw, 2.4rem);
}

.topic-index-list {
  display: grid;
  gap: 22px;
  margin-top: 20px;
}

.topic-index-list li {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 14px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 20px;
}

.topic-index-list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.index-num {
  color: var(--accent-deep);
  font-size: 1.4rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -.02em;
}

.topic-index-list h3 {
  font-size: .98rem;
  color: var(--text-main);
  margin-bottom: 4px;
  line-height: 1.5;
}

.topic-index-list p {
  color: var(--text-soft);
  font-size: .89rem;
  line-height: 1.8;
}

/* ========== Path ========== */
.path-section {
  background: var(--bg-alt);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.path-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
  gap: 36px;
  align-items: center;
}

.path-copy-head {
  margin-bottom: 28px;
}

.path-copy {
  max-width: 680px;
}

.step-list {
  display: grid;
  gap: 14px;
}

.step-item {
  display: flex;
  gap: 18px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  box-shadow: var(--shadow-xs);
}

.step-index {
  flex: 0 0 34px;
  width: 34px;
  height: 34px;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .82rem;
  font-weight: 800;
}

.step-content strong {
  display: block;
  color: var(--primary-deep);
  font-size: .98rem;
  margin-bottom: 2px;
}

.step-content p {
  font-size: .9rem;
  color: var(--text-soft);
  line-height: 1.8;
}

.step-content a {
  color: var(--primary);
  font-weight: 600;
}

.path-cover {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.path-cover img {
  width: 100%;
  aspect-ratio: 5 / 4;
  object-fit: cover;
}

.path-cover-desc {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 18px;
  background: rgba(255, 255, 255, .92);
  border-radius: 14px;
  padding: 12px 16px;
  backdrop-filter: blur(8px);
}

.path-cover-desc strong {
  color: var(--primary-deep);
}

.path-cover-desc p {
  color: var(--text-soft);
  font-size: .83rem;
}

/* ========== FAQ ========== */
.faq-section {
  background: #fff;
}

.faq-grid {
  max-width: 900px;
}

.faq-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color .25s ease, box-shadow .25s ease;
}

.faq-item:hover {
  border-color: rgba(22, 130, 166, .4);
  box-shadow: var(--shadow-xs);
}

.faq-item summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  list-style: none;
  cursor: pointer;
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-main);
  padding: 18px 24px;
  line-height: 1.6;
  transition: color .25s ease;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "\f078";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  font-size: .85rem;
  color: var(--primary);
  flex: 0 0 auto;
  transition: transform .3s ease;
}

.faq-item[open] summary {
  border-bottom: 1px solid var(--line);
}

.faq-item[open] summary::after {
  transform: rotate(180deg);
}

.faq-item p {
  padding: 18px 24px 22px;
  color: var(--text-soft);
  line-height: 1.9;
  font-size: .95rem;
}

.faq-item i {
  color: var(--primary);
  margin-right: 10px;
}

/* ========== CTA ========== */
.cta-banner {
  background: var(--bg-alt);
  padding: clamp(3rem, 6vw, 5.5rem) 0;
}

.cta-banner-inner {
  background: var(--primary-deep);
  border-radius: 24px;
  padding: clamp(2rem, 5vw, 4rem) clamp(1.5rem, 4vw, 3.6rem);
  color: #fff;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 28px;
}

.cta-banner-inner::before {
  content: "";
  position: absolute;
  width: 300px;
  height: 300px;
  border: 40px solid rgba(255, 255, 255, .06);
  border-radius: 50%;
  right: -90px;
  top: -110px;
}

.cta-copy h2 {
  font-size: clamp(1.4rem, 2.6vw, 2.3rem);
  color: #fff;
  line-height: 1.4;
  margin-bottom: 8px;
}

.cta-copy p {
  color: rgba(255, 255, 255, .85);
  max-width: 640px;
  line-height: 1.8;
}

.cta-btns {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.cta-banner .btn-primary {
  background: var(--accent);
  color: var(--primary-deep);
}

.cta-banner .btn-outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, .55);
}

.cta-banner .btn-outline:hover {
  background: #fff;
  border-color: #fff;
  color: var(--primary-deep);
}

/* ========== Footer ========== */
.site-footer {
  background: var(--primary-deep);
  color: #fff;
  padding-top: clamp(2.4rem, 5vw, 4rem);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 28px;
}

.footer-brand .site-logo {
  color: #fff;
  font-size: 1.55rem;
  margin-bottom: 14px;
}

.site-footer .site-logo i {
  color: var(--accent);
}

.footer-brand p {
  color: rgba(255, 255, 255, .76);
  font-size: .92rem;
  max-width: 380px;
  line-height: 1.9;
}

.footer-title {
  color: #fff;
  font-size: .88rem;
  letter-spacing: .1em;
  margin-bottom: 14px;
  padding-bottom: 6px;
  border-bottom: 2px solid rgba(255, 255, 255, .18);
  display: inline-block;
}

.footer-links li + li {
  margin-top: 10px;
}

.footer-links a {
  color: rgba(255, 255, 255, .78);
  font-size: .9rem;
  transition: color .25s ease, padding-left .25s ease;
}

.footer-links a:hover {
  color: var(--accent);
  padding-left: 6px;
}

.footer-col p {
  color: rgba(255, 255, 255, .76);
  font-size: .9rem;
  line-height: 1.9;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .16);
  padding: 20px 0 26px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 20px;
  color: rgba(255, 255, 255, .7);
  font-size: .84rem;
}

.footer-bottom a {
  color: #fff;
  text-decoration: underline;
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .category-hero-grid {
    grid-template-columns: 1fr 0.8fr;
    gap: 30px;
  }

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

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

  .path-cover {
    order: -1;
  }

  .path-cover img {
    aspect-ratio: 16 / 9;
  }

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

@media (max-width: 900px) {
  .header-top-inner {
    flex-wrap: wrap;
    min-height: 0;
    padding: 12px 0 10px;
  }

  .site-logo {
    font-size: 1.2rem;
    margin-right: auto;
  }

  .header-quick-btn {
    font-size: .8rem;
    padding: 0 12px;
  }

  .header-search-wrap {
    width: 100%;
    max-width: none;
    margin-top: 6px;
    order: 3;
  }

  .hot-query {
    margin-top: 5px;
  }

  .nav-inner {
    align-items: stretch;
  }

  .nav-list a {
    padding: 10px 12px;
    font-size: .88rem;
  }

  .category-hero-grid {
    grid-template-columns: 1fr;
  }

  .hero-stack {
    flex-direction: row;
    gap: 14px;
    overflow-x: auto;
    padding-bottom: 8px;
    justify-content: flex-start;
    margin-top: 30px;
  }

  .stack-card,
  .stack-1,
  .stack-2,
  .stack-3 {
    width: auto;
    min-width: 260px;
    margin-top: 0;
    margin-left: 0;
    margin-right: 0;
    flex: 0 0 auto;
  }

  .stack-card img {
    aspect-ratio: 16 / 10;
  }

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

@media (max-width: 767px) {
  .section {
    padding: 2.8rem 0;
  }

  .nav-side-link {
    display: none;
  }

  .nav-list {
    width: 100%;
    justify-content: flex-start;
  }

  .nav-list a i {
    display: none;
  }

  .cta-banner-inner {
    display: block;
  }

  .cta-copy h2 {
    font-size: 1.35rem;
  }

  .cta-btns {
    margin-top: 20px;
  }

  .btn-medium,
  .btn-large {
    min-height: 46px;
    padding: 0 18px;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-bottom {
    display: block;
    line-height: 1.8;
  }

  .guide-panel {
    padding: 1.5rem 1.2rem 1.3rem;
  }

  .guide-panel-list li {
    padding: 12px;
  }

  .topic-list-panel {
    padding: 1.3rem;
  }
}

@media (max-width: 520px) {
  .container-custom,
  .grid-container {
    padding: 0 16px;
  }

  .hero-h1 {
    font-size: 1.8rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn {
    justify-content: center;
  }

  .hero-subtitle {
    font-size: .95rem;
  }

  .topic-index-list li {
    grid-template-columns: 36px 1fr;
    gap: 10px;
  }

  .header-search-wrap {
    order: 3;
  }

  .header-quick-btn {
    width: auto;
    padding: 0 12px;
    min-height: 34px;
  }

  .hot-query a:nth-child(n + 4) {
    display: none;
  }

  .stack-card {
    min-width: 230px;
  }

  .column-cover-image {
    min-height: 180px;
  }
}