/* roulang page: index */
:root {
  --bg-body: #f7f9fd;
  --bg-soft: #eff4fb;
  --surface: #ffffff;
  --brand: #1d5cff;
  --brand-deep: #144fe0;
  --brand-soft: #e9efff;
  --accent: #17a09e;
  --accent-soft: #dcf6f3;
  --sun-yellow: #f6bf5a;
  --coral: #f38270;
  --coral-soft: #ffeae5;
  --text-main: #1c2b44;
  --text-secondary: #52657c;
  --text-muted: #8293a8;
  --border-light: rgba(31, 72, 135, .1);
  --shadow-sm: 0 10px 24px rgba(35, 75, 132, .06);
  --shadow-md: 0 16px 36px rgba(35, 75, 132, .09);
  --shadow-lg: 0 24px 60px rgba(35, 75, 132, .12);
  --radius-sm: 12px;
  --radius-md: 18px;
  --radius-lg: 26px;
  --radius-round: 999px;
  --container-w: 1240px;
  --nav-h: 68px;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei UI", "Noto Sans CJK SC", "Source Han Sans SC", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-body);
  color: var(--text-main);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
a {
  color: inherit;
  text-decoration: none;
}
a:hover {
  color: inherit;
}
img {
  max-width: 100%;
}
.container {
  max-width: var(--container-w);
}
section {
  scroll-margin-top: 80px;
}

/* header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1030;
  height: var(--nav-h);
  transition: background .3s ease, box-shadow .3s ease, border-color .3s ease;
  background: transparent;
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled,
.site-header.is-open {
  background: rgba(255, 255, 255, .96);
  border-bottom-color: var(--border-light);
  box-shadow: 0 6px 24px rgba(24, 60, 120, .05);
}
.custom-nav {
  min-height: var(--nav-h);
  padding-top: 0;
  padding-bottom: 0;
}
.site-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 0;
  margin-right: 0;
  letter-spacing: .02em;
}
.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--brand);
  color: #fff;
  border-radius: 10px;
  font-weight: 700;
  font-size: 16px;
  height: 34px;
  padding: 0 10px;
  letter-spacing: .06em;
}
.logo-text {
  font-size: 21px;
  font-weight: 700;
  color: var(--text-main);
}
.logo-text small {
  display: block;
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: .22em;
  font-weight: 500;
}
.site-nav {
  gap: 4px;
  margin-left: 48px;
}
.site-nav .nav-link {
  font-size: 15px;
  font-weight: 600;
  color: #31435c;
  border-radius: 999px;
  padding: 8px 15px !important;
  line-height: normal;
  transition: color .2s ease, background .2s ease;
}
.site-nav .nav-link:hover {
  color: var(--brand);
  background: var(--brand-soft);
}
.site-nav .nav-link.active {
  color: var(--brand);
  background: var(--brand-soft);
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}
.nav-link-soft {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 8px 4px;
  line-height: 1.2;
}
.nav-link-soft:hover {
  color: var(--brand);
}
.custom-toggler {
  border: none;
  padding: .5rem .55rem;
}
.custom-toggler:focus {
  box-shadow: none;
  outline: none;
}
.custom-toggler .toggler-inner {
  width: 22px;
  height: 14px;
  position: relative;
}
.custom-toggler .toggler-inner span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  border-radius: 3px;
  background: var(--text-main);
  transition: transform .3s ease, opacity .3s ease;
}
.custom-toggler .toggler-inner span:nth-child(1) {
  top: 0;
}
.custom-toggler .toggler-inner span:nth-child(2) {
  top: 6px;
}
.custom-toggler .toggler-inner span:nth-child(3) {
  top: 12px;
}
@media (max-width: 991px) {
  .site-header,
  .site-header.is-scrolled {
    background: rgba(255, 255, 255, .92);
    backdrop-filter: blur(12px);
  }
  .navbar-collapse {
    background: #fff;
    border-radius: 0 0 18px 18px;
    padding: 14px 12px 20px;
    box-shadow: var(--shadow-md);
  }
  .site-nav {
    margin-left: 0;
    gap: 2px;
  }
  .site-nav .nav-link {
    border-radius: 10px;
    padding: 10px 12px !important;
  }
  .nav-actions {
    padding: 8px 6px 0;
    border-top: 1px solid var(--border-light);
    width: 100%;
  }
}

/* buttons */
.btn-brand {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 10px;
  min-height: 46px;
  padding: 0 24px;
  background: var(--brand);
  color: #fff !important;
  border: 1px solid var(--brand);
  font-weight: 600;
  font-size: 15px;
  line-height: 1;
  transition: transform .18s ease, background .2s ease, box-shadow .2s ease, border-color .2s ease;
  box-shadow: 0 10px 22px rgba(29, 92, 255, .2);
}
.btn-brand:hover {
  background: var(--brand-deep);
  border-color: var(--brand-deep);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 14px 26px rgba(29, 92, 255, .22);
}
.btn-brand:focus-visible,
.btn-outline-brand:focus-visible,
.btn-brand-soft:focus-visible {
  outline: 3px solid rgba(29, 92, 255, .25);
  outline-offset: 2px;
}
.btn-outline-brand {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 10px;
  min-height: 46px;
  padding: 0 22px;
  background: rgba(255, 255, 255, .8);
  color: var(--brand) !important;
  border: 1px solid rgba(29, 92, 255, .28);
  font-weight: 600;
  font-size: 15px;
  transition: transform .18s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease;
  box-shadow: 0 4px 14px rgba(22, 62, 110, .04);
}
.btn-outline-brand:hover {
  background: var(--brand-soft);
  border-color: rgba(29, 92, 255, .45);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}
.btn-brand-soft {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 10px;
  min-height: 46px;
  padding: 0 22px;
  background: var(--brand-soft);
  color: var(--brand) !important;
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 15px;
  transition: transform .18s ease, background .2s ease, border-color .2s ease;
}
.btn-brand-soft:hover {
  background: #dbe7ff;
  color: var(--brand-deep);
  transform: translateY(-2px);
  border-color: rgba(29, 92, 255, .16);
}
.btn-white-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 10px;
  min-height: 46px;
  padding: 0 22px;
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, .42);
  font-weight: 600;
  font-size: 15px;
  transition: background .2s ease, transform .18s ease;
}
.btn-white-ghost:hover {
  background: rgba(255, 255, 255, .15);
  transform: translateY(-2px);
  color: #fff;
}
.btn-link-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--brand);
  border: 0;
  background: transparent;
  padding: 6px 0;
  transition: color .2s ease, gap .2s ease;
}
.btn-link-more:hover {
  color: var(--brand-deep);
  gap: 10px;
}

/* hero */
.hero-section {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: stretch;
  padding: calc(var(--nav-h) + 56px) 0 52px;
  background:
    radial-gradient(circle at 18% 30%, rgba(29, 92, 255, .08) 0, transparent 24%),
    radial-gradient(circle at 82% 82%, rgba(23, 160, 158, .09) 0, transparent 26%),
    var(--bg-body);
  overflow: hidden;
}
.hero-section::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -40px;
  height: 100px;
  background: linear-gradient(180deg, transparent, var(--bg-body));
  z-index: 1;
  pointer-events: none;
}
.hero-inner {
  width: 100%;
  position: relative;
  z-index: 3;
}
.hero-grid {
  display: flex;
  align-items: center;
}
.hero-copy {
  padding-right: 24px;
}
.hero-channel-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 28px;
}
.channel-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, .9);
  border: 1px solid rgba(31, 72, 135, .1);
  padding: 7px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  color: #33475f;
  box-shadow: 0 6px 14px rgba(30, 70, 130, .05);
  transition: transform .2s ease, background .2s ease;
}
.channel-chip i {
  color: var(--brand);
  font-size: 12px;
}
.channel-chip:hover {
  transform: translateY(-2px);
  background: #fff;
}
.hero-title {
  font-size: clamp(36px, 5vw, 55px);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -.01em;
  margin: 0 0 22px;
  color: #14233a;
  max-width: 640px;
}
.hero-title .text-brand {
  color: var(--brand);
}
.hero-sub {
  font-size: 18px;
  line-height: 1.8;
  color: var(--text-secondary);
  margin: 0 0 32px;
  max-width: 580px;
}
.hero-buttons {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 34px;
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.hero-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  background: #fff;
  border-radius: 12px;
  padding: 9px 14px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  color: #42597a;
  font-size: 13px;
  font-weight: 500;
  line-height: 1.4;
}
.hero-meta-item i {
  font-size: 14px;
  width: 22px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--brand-soft);
  color: var(--brand);
  border-radius: 8px;
}
.hero-visual {
  min-height: 0;
  padding-left: 36px;
  position: relative;
}
.hero-visual .visual-wrap {
  position: relative;
  display: block;
  max-width: 460px;
  margin-left: auto;
  margin-right: 0;
}
.visual-backdrop {
  position: relative;
  border-radius: 28px;
  overflow: hidden;
  aspect-ratio: 3/3.7;
  background: linear-gradient(145deg, #d8e4ff 0%, #eef6ff 55%, #e4f7f4 100%);
  box-shadow: var(--shadow-lg);
}
.visual-backdrop::before {
  content: "";
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: linear-gradient(180deg, rgba(25, 60, 120, .02) 0%, transparent 30%, transparent 70%, rgba(20, 50, 100, .08) 100%);
}
.visual-poster {
  position: absolute;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.02);
}
.visual-layer {
  position: absolute;
  top: 14px;
  left: 14px;
  color: #fff;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, .2);
  border: 1px solid rgba(255, 255, 255, .35);
  backdrop-filter: blur(6px);
  border-radius: 999px;
  padding: 5px 12px;
  font-size: 12px;
  font-weight: 600;
  z-index: 3;
}
.visual-desc-bottom {
  position: absolute;
  bottom: 14px;
  left: 14px;
  right: 14px;
  color: #fff;
  background: linear-gradient(90deg, rgba(19, 38, 74, .58), rgba(19, 38, 74, .2));
  border-radius: 16px;
  padding: 14px 16px;
  line-height: 1.5;
  font-size: 13px;
  z-index: 4;
  backdrop-filter: blur(4px);
}
.floating-cover {
  position: absolute;
  bottom: -32px;
  left: -44px;
  width: 142px;
  background: #fff;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 18px 40px rgba(18, 56, 124, .18);
  border: 4px solid #fff;
  z-index: 5;
}
.floating-cover img {
  width: 100%;
  display: block;
  aspect-ratio: 3/4;
  object-fit: cover;
}
.floating-tag {
  position: absolute;
  top: -16px;
  right: 26px;
  background: var(--accent);
  color: #fff;
  border-radius: 9px;
  padding: 4px 11px;
  font-size: 12px;
  font-weight: 600;
  box-shadow: 0 8px 18px rgba(23, 160, 158, .25);
  z-index: 6;
  transform: rotate(4deg);
}
.hero-visual::after {
  content: "";
  position: absolute;
  right: -5%;
  top: -70px;
  width: 50%;
  height: 120%;
  background: linear-gradient(90deg, rgba(255, 255, 255, .38), rgba(23, 160, 158, .05) 70%, transparent);
  transform: rotate(16deg);
  z-index: 0;
}
.hero-visual .visual-wrap {
  position: relative;
  z-index: 2;
}
@media (max-width: 991px) {
  .hero-section {
    min-height: 0;
    padding: 108px 0 36px;
  }
  .hero-grid {
    display: block;
  }
  .hero-copy {
    padding-right: 0;
  }
  .hero-title {
    font-size: 36px;
  }
  .hero-buttons {
    flex-wrap: wrap;
  }
  .hero-visual {
    padding-left: 0;
    margin-top: 72px;
    margin-bottom: 80px;
  }
  .hero-visual .visual-wrap {
    max-width: 420px;
    margin: 0 auto;
  }
}

/* section base */
.section-block {
  padding: 96px 0;
}
.section-block-lg {
  padding: 112px 0;
}
.section-bg-soft {
  background: var(--bg-soft);
}
.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 34px;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--brand);
  background: var(--brand-soft);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(26px, 3vw, 34px);
  font-weight: 800;
  line-height: 1.25;
  margin: 0 0 10px;
  color: #14233a;
  letter-spacing: -.01em;
}
.section-lead {
  color: var(--text-secondary);
  font-size: 16px;
  max-width: 760px;
  margin: 0;
}
.section-link-box a {
  color: var(--brand);
  font-weight: 600;
  font-size: 14px;
}

/* sliding chips */
.flow-block {
  position: relative;
  padding-top: 4px;
}
.flow-scroll {
  overflow-x: auto;
  scrollbar-width: none;
  padding: 8px 8px 24px 0;
}
.flow-scroll::-webkit-scrollbar {
  display: none;
}
.flow-flex {
  display: flex;
  gap: 22px;
  min-width: max-content;
  padding-right: 40px;
}
.slider-align {
  margin-left: max(20px, calc((100vw - var(--container-w)) / 2));
}
.flow-title-area {
  padding-left: max(20px, calc((100vw - var(--container-w)) / 2));
  padding-right: max(20px, calc((100vw - var(--container-w)) / 2));
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
}
.carousel-arrows {
  display: flex;
  gap: 8px;
}
.carousel-arrows button {
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  border-radius: 50%;
  border: 1px solid var(--border-light);
  color: var(--text-main);
  font-size: 14px;
  box-shadow: var(--shadow-sm);
  transition: all .2s ease;
}
.carousel-arrows button:hover {
  color: #fff;
  background: var(--brand);
  border-color: var(--brand);
}
@media (max-width: 767px) {
  .flow-title-area {
    display: block;
  }
  .carousel-arrows {
    justify-content: flex-end;
    margin-top: 12px;
  }
}

/* benefit cards */
.benefit-card {
  width: 292px;
  min-width: 292px;
  background: var(--surface);
  border-radius: var(--radius-md);
  padding: 24px 22px 20px;
  border: 1px solid rgba(34, 79, 148, .06);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform .22s ease, box-shadow .22s ease;
  min-height: 210px;
}
.benefit-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}
.benefit-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  margin-bottom: 18px;
  color: var(--brand);
  background: var(--brand-soft);
}
.benefit-card:nth-child(2) .benefit-icon {
  color: var(--accent);
  background: var(--accent-soft);
}
.benefit-card:nth-child(3) .benefit-icon {
  color: #6a5cff;
  background: #eeebff;
}
.benefit-card:nth-child(4) .benefit-icon {
  color: #d97706;
  background: #fff1d6;
}
.benefit-card:nth-child(5) .benefit-icon {
  color: #e05f7d;
  background: #ffe8ef;
}
.benefit-card-title {
  font-size: 19px;
  font-weight: 700;
  color: #16253e;
  margin-bottom: 8px;
}
.benefit-card-desc {
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-secondary);
  margin: 0 0 18px;
  flex-grow: 1;
}
.benefit-card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--brand);
  line-height: 1.4;
  padding: 0;
}
.benefit-card-link:hover {
  color: var(--brand-deep);
  gap: 9px;
}

/* trend cards */
.trend-card {
  height: 100%;
  background: var(--surface);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(34, 79, 148, .05);
  transition: transform .22s ease, box-shadow .22s ease;
  display: flex;
  flex-direction: column;
  position: relative;
}
.trend-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}
.trend-img-wrap {
  position: relative;
  overflow: hidden;
  display: block;
  aspect-ratio: 16 / 10;
  background: var(--bg-soft);
}
.trend-img-wrap::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 58%, rgba(18, 45, 88, .28));
  opacity: .8;
}
.trend-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.trend-card:hover .trend-img-wrap img {
  transform: scale(1.05);
}
.trend-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 4;
  border-radius: 999px;
  background: #fff;
  color: #283d5c;
  padding: 4px 11px;
  font-size: 12px;
  font-weight: 700;
  box-shadow: 0 6px 14px rgba(20, 40, 80, .12);
}
.trend-badge.is-hot {
  background: var(--coral);
  color: #fff;
}
.trend-badge.is-star {
  background: var(--accent);
  color: #fff;
}
.trend-content {
  padding: 22px 22px 20px;
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
}
.trend-name {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.45;
  color: #15243a;
  margin-bottom: 6px;
}
.trend-desc {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 16px;
  flex: 1 1 auto;
}
.trend-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-bottom: 15px;
}
.tag-chip {
  display: inline-block;
  border-radius: 999px;
  background: var(--bg-soft);
  color: #425675;
  padding: 3px 11px;
  font-size: 12px;
  font-weight: 500;
}
.trend-content .btn-brand,
.trend-content .btn-outline-brand {
  align-self: flex-start;
  min-height: 40px;
  padding: 0 16px;
  font-size: 14px;
}

/* update feed */
.update-section {
  background: var(--bg-body);
}
.update-panel {
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  border: 1px solid var(--border-light);
}
.update-side {
  background: linear-gradient(150deg, #edf3ff 0%, #f3f8fe 60%, #eafaf8 100%);
  height: 100%;
  padding: 42px 38px;
}
.update-side-icon {
  width: 54px;
  height: 54px;
  background: var(--brand);
  color: #fff;
  border-radius: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 22px;
  box-shadow: 0 12px 24px rgba(29, 92, 255, .2);
}
.update-side h3 {
  font-size: 24px;
  font-weight: 800;
  color: #15233b;
  margin-bottom: 12px;
}
.update-side p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.85;
}
.update-side .btn-white {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
  background: #fff;
  color: var(--brand);
  border: 1px solid rgba(29, 92, 255, .22);
  border-radius: 10px;
  padding: 9px 16px;
  font-weight: 600;
  font-size: 14px;
  transition: all .2s;
}
.update-side .btn-white:hover {
  background: var(--brand);
  color: #fff;
}
.feed-list-wrap {
  padding: 36px 32px 20px;
}
.feed-list-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
  color: #1d2c45;
}
.feed-list-sub {
  color: var(--text-muted);
  font-size: 14px;
  margin-bottom: 20px;
}
.feed-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.feed-item {
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid rgba(31, 72, 135, .07);
  padding: 15px 2px;
  transition: padding .2s;
}
.feed-item:last-child {
  border-bottom: 0;
}
.feed-item:hover {
  padding-left: 7px;
}
.feed-item-date {
  font-size: 13px;
  color: var(--text-muted);
  flex: 0 0 auto;
}
.feed-item-cat {
  background: var(--bg-soft);
  border-radius: 6px;
  padding: 2px 9px;
  white-space: nowrap;
  color: #445a76;
  font-size: 12px;
  font-weight: 600;
}
.feed-item-title {
  min-width: 0;
  font-size: 15px;
  color: #2d3d56;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.feed-item-title:hover {
  color: var(--brand);
}
.feed-empty {
  background: #fff7ee;
  border: 1px dashed #f6c68a;
  color: #8c7355;
  border-radius: 14px;
  padding: 30px 16px;
  text-align: center;
}
@media (max-width: 767px) {
  .update-side {
    padding: 30px 22px;
  }
  .feed-item {
    flex-wrap: wrap;
    gap: 8px;
  }
}

/* layout zone */
.zone-section {
  padding: 104px 0;
  overflow: hidden;
}
.zone-block {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--accent);
  box-shadow: var(--shadow-md);
}
.zone-big-card {
  display: flex;
  flex-wrap: wrap;
  min-height: 300px;
  background: linear-gradient(90deg, #dff4f2 0%, #f0f9f8 56%, #fff 100%);
}
.zone-big-content {
  flex: 1 1 55%;
  padding: 36px 38px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.zone-big-title {
  font-size: 24px;
  font-weight: 800;
  color: #14323f;
  margin-bottom: 10px;
}
.zone-big-desc {
  color: #445d6c;
  font-size: 15px;
  max-width: 520px;
  line-height: 1.85;
}
.zone-big-img {
  flex: 0 0 45%;
  min-height: 250px;
  background-image: url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center;
  position: relative;
  display: block;
}
.zone-big-img::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(270deg, transparent 10%, #eff9f8 100%);
}
.zone-big-img .img-note {
  position: absolute;
  left: 18px;
  bottom: 18px;
  background: rgba(255, 255, 255, .85);
  border-radius: 12px;
  padding: 8px 12px;
  font-size: 13px;
  font-weight: 600;
  color: #1c3c47;
}
.zone-half-group {
  height: 100%;
  display: grid;
  grid-template-rows: 1fr 1fr;
  gap: 20px;
}
.zone-half-card {
  position: relative;
  border-radius: 24px;
  padding: 25px 26px;
  background: var(--surface);
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: transform .2s, box-shadow .2s;
}
.zone-half-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.zone-half-card .th-card-content {
  z-index: 2;
}
.zone-half-card .th-img {
  position: absolute;
  right: -24px;
  bottom: -20px;
  width: 46%;
  border-radius: 16px;
  object-fit: cover;
  transform: rotate(-5deg);
  box-shadow: var(--shadow-md);
}
.zone-half-card h3 {
  font-size: 19px;
  font-weight: 700;
  color: #152c3d;
}
.zone-half-card p {
  color: var(--text-secondary);
  font-size: 14px;
  margin: 6px 0 14px;
  max-width: 300px;
}
.zone-half-card .btn-link-more {
  padding: 0;
  color: var(--brand);
  font-weight: 600;
  font-size: 14px;
}
@media (max-width: 991px) {
  .zone-half-group {
    margin-top: 20px;
    gap: 14px;
  }
  .zone-big-content {
    padding: 30px;
  }
  .zone-big-img {
    min-height: 250px;
  }
}

/* join band */
.join-section {
  padding: 74px 0;
}
.join-panel {
  border-radius: 30px;
  background: #fff;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  position: relative;
  border: 1px solid transparent;
  background-image: linear-gradient(110deg, #f2f6ff 0%, #fdfeff 60%, #e4faf8 100%);
}
.join-panel::before {
  content: "";
  position: absolute;
  right: -12%;
  top: -22%;
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, rgba(23, 160, 158, .12), transparent 60%);
  border-radius: 50%;
}
.join-panel-inner {
  display: flex;
  flex-wrap: wrap;
  padding: 44px 48px;
}
.join-copy {
  flex: 1 1 52%;
  position: relative;
  z-index: 2;
}
.join-copy h2 {
  font-size: 30px;
  font-weight: 800;
  line-height: 1.3;
  color: #152c45;
  margin-bottom: 10px;
}
.join-copy p {
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0;
}
.join-form-wrap {
  flex: 1 1 48%;
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: flex-end;
}
.join-form {
  width: 100%;
  max-width: 410px;
}
.btn-join {
  width: 100%;
}
.input-phone {
  height: 52px;
  border-radius: 12px;
  border: 1px solid rgba(22, 64, 130, .16);
  background: #fff;
  padding: 0 16px;
  color: #1b304c;
  font-size: 15px;
  transition: all .2s;
}
.input-phone:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 4px rgba(29, 92, 255, .1);
}
.join-form-tip {
  font-size: 13px;
  color: var(--text-muted);
  margin: 10px 2px 0;
}
.join-ok-message {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-top: 10px;
  background: #e7f7f4;
  color: #176d68;
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 14px;
  border: 1px solid #c4ede5;
}
@media (max-width: 991px) {
  .join-panel-inner {
    padding: 32px 24px;
    display: block;
  }
  .join-form-wrap {
    justify-content: flex-start;
    margin-top: 28px;
  }
  .join-form {
    max-width: 100%;
  }
}

/* FAQ */
.faq-section {
  background: var(--bg-soft);
}
.faq-accordion-wrap {
  max-width: 900px;
  margin: 0 auto;
}
.faq-accordion-item {
  background: #fff;
  border: 1px solid var(--border-light) !important;
  border-radius: 16px !important;
  overflow: hidden;
  margin-bottom: 14px;
  box-shadow: var(--shadow-sm);
}
.faq-accordion-item .accordion-header {
  border: 0;
}
.faq-accordion-item .accordion-button {
  padding: 20px 24px;
  background: #fff;
  color: var(--text-main);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  border: 0;
  box-shadow: none;
}
.faq-accordion-item .accordion-button:not(.collapsed) {
  color: var(--brand);
  background: #f7faff;
}
.faq-accordion-item .accordion-button:focus {
  border: 0;
  box-shadow: 0 0 0 3px rgba(29, 92, 255, .18);
}
.faq-accordion-item .accordion-button::after {
  background-size: 1rem;
  opacity: .6;
  transition: transform .2s;
}
.faq-accordion-item .accordion-body {
  padding: 4px 24px 22px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.9;
  background: #fff;
}

/* bottom cta */
.cta-banner {
  margin-top: 70px;
  background: linear-gradient(115deg, #1d5cff 0%, #1c6dff 70%, #17a09e 150%);
  border-radius: 24px;
  text-align: center;
  padding: 60px 24px;
  position: relative;
  color: #fff;
  overflow: hidden;
}
.cta-banner::before {
  content: "";
  position: absolute;
  left: -80px;
  top: -130px;
  width: 320px;
  height: 320px;
  background: rgba(255, 255, 255, .1);
  border-radius: 50%;
}
.cta-banner::after {
  content: "";
  position: absolute;
  right: -40px;
  bottom: -170px;
  width: 400px;
  height: 400px;
  background: rgba(255, 255, 255, .08);
  border-radius: 50%;
}
.cta-banner h2 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 12px;
  position: relative;
  z-index: 2;
}
.cta-banner p {
  color: rgba(255, 255, 255, .88);
  max-width: 660px;
  margin: 0 auto 24px;
  position: relative;
  z-index: 2;
}
.cta-banner .btn-white {
  background: #fff;
  color: var(--brand);
  border: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  border-radius: 12px;
  padding: 0 26px;
  min-height: 50px;
  box-shadow: 0 10px 20px rgba(12, 54, 120, .2);
  transition: all .2s;
}
.cta-banner .btn-white:hover {
  transform: translateY(-2px);
  background: #eef4ff;
}

/* footer */
.site-footer {
  background: #edf2f9;
  border-top: 1px solid var(--border-light);
  padding: 80px 0 24px;
  color: #445b78;
}
.footer-brand-name {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 20px;
  font-weight: 800;
  color: #142d56;
  margin-bottom: 8px;
}
.footer-how {
  font-size: 13px;
  color: #8fa0b6;
  font-weight: 600;
  letter-spacing: .16em;
  text-transform: uppercase;
  margin: 4px 0 0;
}
.footer-desc {
  margin-top: 14px;
  font-size: 14px;
  color: var(--text-secondary);
  max-width: 330px;
  line-height: 1.8;
}
.footer-title {
  font-size: 16px;
  font-weight: 700;
  color: #1b3456;
  margin-bottom: 16px;
}
.footer-link-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.footer-link-list li {
  margin-bottom: 12px;
}
.footer-link-list a {
  font-size: 14px;
  color: #526982;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color .2s ease, padding .2s ease;
}
.footer-link-list a:hover {
  color: var(--brand);
  padding-left: 4px;
}
.footer-info-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: #495f7a;
  margin-bottom: 14px;
}
.footer-info-row i {
  color: var(--brand);
  width: 18px;
  text-align: center;
  margin-top: 4px;
}
.footer-bottom {
  border-top: 1px solid rgba(31, 72, 135, .08);
  padding-top: 22px;
  margin-top: 30px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 13px;
  color: #8396ad;
}
.footer-bottom-tech {
  color: #9fb0c3;
  letter-spacing: .04em;
}
.backtop-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #fff;
  border: 1px solid var(--border-light);
  padding: 7px 13px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  color: #506888;
  transition: all .2s;
}
.backtop-btn:hover {
  background: var(--brand);
  border-color: var(--brand);
  color: #fff;
}
@media (max-width: 767px) {
  .section-block,
  .section-block-lg {
    padding: 68px 0;
  }
  .zone-section {
    padding: 64px 0;
  }
  .join-section {
    padding: 48px 0;
  }
  .cta-banner {
    padding: 46px 18px;
  }
  .cta-banner h2 {
    font-size: 24px;
  }
  .site-footer {
    padding-top: 56px;
  }
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* roulang page: article */
:root {
  --brand-blue: #1B5CFF;
  --brand-blue-dark: #1244C9;
  --brand-blue-soft: #EAF0FF;
  --accent-teal: #16B8A6;
  --accent-coral: #F26B5B;
  --bg-body: #F7F9FD;
  --bg-white: #FFFFFF;
  --bg-soft: #F0F4FB;
  --text-main: #152A4D;
  --text-secondary: #55709C;
  --text-light: #8AA1C4;
  --border-light: #E4EBF5;
  --shadow-card: 0 6px 24px rgba(33,72,132,0.08);
  --shadow-hover: 0 12px 32px rgba(33,72,132,0.13);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 20px;
  --font-main: "PingFang SC","Microsoft YaHei UI","Noto Sans CJK SC","Helvetica Neue",Arial,sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin:0; font-family: var(--font-main); background: var(--bg-body); color: var(--text-main); font-size: 16px; line-height: 1.9; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; border: 0; vertical-align: middle; }
a { text-decoration: none; color: var(--brand-blue); transition: color .2s ease, border-color .2s ease; }
a:hover { color: var(--brand-blue-dark); }
button { cursor: pointer; font-family: inherit; }
.container { max-width: 1200px; padding-left: 20px; padding-right: 20px; }
.site-header { position: sticky; top: 0; z-index: 1030; height: 68px; background: rgba(255,255,255,0.92); backdrop-filter: blur(10px); transition: box-shadow .25s ease, background .25s ease; border-bottom: 1px solid rgba(228,235,245,0.7); }
.site-header.scrolled { box-shadow: 0 4px 20px rgba(33,72,132,0.07); }
.custom-nav { min-height: 68px; padding: 0; }
.site-logo { display: flex; align-items: center; gap: 10px; margin-right: auto; font-weight: 700; }
.logo-mark { display: inline-flex; align-items: center; justify-content: center; width: 38px; height: 38px; border-radius: 10px; background: var(--brand-blue); color: #fff; font-weight: 700; font-size: 15px; letter-spacing: 0; flex: 0 0 auto; box-shadow: 0 4px 12px rgba(27,92,255,0.24); }
.logo-text { display: flex; flex-direction: column; line-height: 1.2; font-size: 20px; font-weight: 700; color: var(--text-main); }
.logo-text small { font-size: 10px; font-weight: 500; letter-spacing: .12em; color: var(--text-light); margin-top: 2px; font-family: inherit; }
.site-nav { gap: 4px; padding-left: 24px; }
.site-nav .nav-link { font-size: 15px; font-weight: 500; color: var(--text-secondary); padding: 9px 16px !important; border-radius: 8px; position: relative; transition: color .2s ease, background .2s ease; }
.site-nav .nav-link:hover { color: var(--brand-blue); background: var(--brand-blue-soft); }
.site-nav .nav-link.active { color: var(--brand-blue); font-weight: 600; background: transparent; }
.site-nav .nav-link.active::after { content: ""; position: absolute; left: 16px; right: 16px; bottom: 2px; height: 3px; border-radius: 3px; background: var(--brand-blue); }
.nav-actions { display: flex; align-items: center; gap: 12px; }
.nav-link-soft { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; color: var(--text-secondary); padding: 7px 10px; border-radius: 8px; font-weight: 500; }
.nav-link-soft:hover { background: var(--bg-soft); color: var(--text-main); }
.btn-brand { background: var(--brand-blue); color: #fff; border: 1px solid var(--brand-blue); border-radius: var(--radius-sm); font-weight: 600; display: inline-flex; align-items: center; justify-content: center; gap: 6px; min-height: 44px; padding: 0 20px; transition: background .2s ease, transform .2s ease, box-shadow .2s ease; }
.btn-brand:hover { background: var(--brand-blue-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 18px rgba(27,92,255,.22); }
.btn-outline-brand { background: #fff; color: var(--brand-blue); border: 1px solid #C9DDFF; border-radius: var(--radius-sm); font-weight: 600; display: inline-flex; align-items: center; justify-content: center; gap: 6px; min-height: 44px; padding: 0 20px; transition: background .2s ease, border-color .2s ease, transform .2s ease; }
.btn-outline-brand:hover { background: var(--brand-blue-soft); border-color: var(--brand-blue); color: var(--brand-blue); transform: translateY(-2px); }
.custom-toggler { border: 0; background: transparent; padding: 6px; box-shadow: none !important; }
.custom-toggler:focus { box-shadow: none; }
.toggler-inner { display: inline-flex; flex-direction: column; justify-content: center; gap: 4px; width: 22px; height: 22px; }
.toggler-inner span { height: 2px; width: 22px; background: var(--text-main); border-radius: 2px; display: block; transition: transform .25s ease, opacity .25s ease; }
.split-breadcrumb-wrap { padding-top: 34px; padding-bottom: 6px; background: var(--bg-body); }
.breadcrumb-bar { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--text-light); flex-wrap: wrap; }
.breadcrumb-bar a { color: var(--text-secondary); display: inline-flex; align-items: center; gap: 6px; }
.breadcrumb-bar a:hover { color: var(--brand-blue); }
.breadcrumb-sep { opacity: .4; font-size: 12px; }
.breadcrumb-current { color: var(--text-secondary); max-width: 420px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; display: inline-block; vertical-align: bottom; }
.article-layout { padding: 30px 0 70px; background: var(--bg-body); position: relative; }
.article-side-toc { position: sticky; top: 100px; padding-top: 28px; }
.toc-heading { font-size: 15px; font-weight: 700; color: var(--text-main); margin-bottom: 12px; padding-left: 14px; position: relative; }
.toc-heading::before { content: ""; position: absolute; left: 0; top: 6px; bottom: 6px; width: 4px; border-radius: 4px; background: var(--brand-blue); }
.toc-tags-wrap { display: flex; flex-wrap: wrap; gap: 8px; }
.toc-chip { display: inline-block; background: var(--bg-white); border: 1px solid var(--border-light); border-radius: 999px; padding: 4px 14px; font-size: 13px; color: var(--text-secondary); transition: all .2s ease; }
.toc-chip:hover { background: var(--brand-blue-soft); color: var(--brand-blue); border-color: #B8D1FF; }
.article-side-card { background: var(--bg-white); border: 1px solid var(--border-light); border-radius: var(--radius-md); padding: 22px; margin-top: 20px; box-shadow: var(--shadow-card); }
.article-side-card .side-title { font-size: 16px; font-weight: 700; color: var(--text-main); margin-bottom: 8px; }
.article-side-card p { font-size: 14px; color: var(--text-secondary); margin-bottom: 14px; line-height: 1.7; }
.article-side-card .btn { width: 100%; margin-bottom: 4px; }
.article-content-inner { max-width: 860px; margin-left: auto; margin-right: auto; }
.article-main-card { background: var(--bg-white); border-radius: var(--radius-lg); box-shadow: var(--shadow-card); border: 1px solid var(--border-light); padding: 52px 58px 44px; margin-top: 18px; }
.article-title-row { margin-bottom: 18px; }
.article-title-row h1 { font-size: 36px; font-weight: 700; color: var(--text-main); line-height: 1.35; margin: 0 0 14px; letter-spacing: -0.01em; }
.article-meta-list { display: flex; align-items: center; flex-wrap: wrap; gap: 6px 18px; font-size: 14px; color: var(--text-light); margin-bottom: 6px; }
.article-meta-list .meta-item { display: inline-flex; align-items: center; gap: 6px; }
.article-meta-list .meta-item i { color: var(--brand-blue); font-size: 13px; }
.article-meta-list .cat-name { display: inline-block; background: var(--brand-blue-soft); color: var(--brand-blue); border-radius: 6px; padding: 2px 10px; font-size: 13px; font-weight: 500; }
.article-divider { border: 0; border-top: 1px solid var(--border-light); margin: 12px 0 28px; opacity: 1; }
.article-body-wrap { font-size: 17px; line-height: 2.0; color: var(--text-main); }
.article-body-wrap > *:first-child { margin-top: 0; }
.article-body-wrap p { margin: 0 0 22px; color: var(--text-main); }
.article-body-wrap img { border-radius: var(--radius-md); margin: 20px 0; box-shadow: var(--shadow-card); }
.article-body-wrap h2, .article-body-wrap h3, .article-body-wrap h4 { margin: 32px 0 14px; font-weight: 700; color: var(--text-main); line-height: 1.4; }
.article-body-wrap h2 { font-size: 24px; padding-left: 14px; border-left: 4px solid var(--brand-blue); }
.article-body-wrap h3 { font-size: 20px; }
.article-body-wrap blockquote { position: relative; background: var(--bg-soft); border-radius: var(--radius-sm); padding: 18px 22px 18px 46px; margin: 24px 0; color: var(--text-secondary); border: 0; }
.article-body-wrap blockquote::before { content: "\F10D"; font-family: "Font Awesome 6 Free"; font-weight: 900; position: absolute; left: 17px; top: 16px; font-size: 18px; color: var(--brand-blue); }
.article-body-wrap ul, .article-body-wrap ol { padding-left: 22px; margin: 14px 0 22px; }
.article-body-wrap li { margin-bottom: 8px; color: var(--text-main); }
.article-body-wrap a { color: var(--brand-blue); text-decoration: underline; text-underline-offset: 3px; text-decoration-color: rgba(27,92,255,0.35); }
.article-body-wrap a:hover { color: var(--brand-blue-dark); text-decoration-color: var(--brand-blue); }
.article-body-wrap table { width: 100%; border-collapse: separate; border-spacing: 0; border-radius: var(--radius-sm); border: 1px solid var(--border-light); margin: 22px 0; }
.article-body-wrap th { background: var(--bg-soft); font-weight: 600; padding: 10px 16px; border-bottom: 1px solid var(--border-light); text-align: left; }
.article-body-wrap td { padding: 12px 16px; border-bottom: 1px solid #EEF2F8; color: var(--text-secondary); }
.article-body-wrap tr:last-child td { border-bottom: 0; }
.article-body-wrap .alert-callout { background: var(--brand-blue-soft); border-radius: var(--radius-sm); padding: 16px 20px; margin: 20px 0; font-size: 15px; color: var(--text-secondary); display: flex; gap: 12px; align-items: flex-start; }
.alert-callout i { color: var(--brand-blue); font-size: 18px; margin-top: 4px; }
.tag-block { margin-top: 38px; border-top: 1px solid var(--border-light); padding-top: 22px; }
.tag-block-label { font-size: 14px; font-weight: 600; color: var(--text-main); margin-bottom: 10px; display: flex; align-items: center; gap: 6px; }
.tag-block-label i { color: var(--brand-blue); }
.article-tag-items { display: flex; flex-wrap: wrap; gap: 8px; }
.chip-tag { display: inline-flex; align-items: center; gap: 5px; background: var(--bg-soft); color: var(--text-secondary); font-size: 13px; padding: 5px 14px; border-radius: 999px; transition: all .2s ease; border: 1px solid transparent; }
.chip-tag:hover { background: var(--brand-blue-soft); color: var(--brand-blue); border-color: #B8D1FF; }
.chip-tag i { font-size: 11px; }
.article-prev-next { display: flex; flex-direction: column; gap: 10px; margin-top: 28px; background: var(--bg-soft); border-radius: var(--radius-md); padding: 20px 24px; font-size: 15px; }
.article-prev-next a { color: var(--text-secondary); display: inline-flex; align-items: center; gap: 8px; transition: color .2s ease, transform .2s ease; }
.article-prev-next a:hover { color: var(--brand-blue); transform: translateX(2px); }
.notfound-area { background: var(--bg-white); border: 1px solid var(--border-light); border-radius: var(--radius-lg); box-shadow: var(--shadow-card); max-width: 760px; margin: 50px auto; padding: 70px 40px; text-align: center; }
.notfound-icon { font-size: 48px; color: #B9CCEB; margin-bottom: 18px; }
.notfound-area h1 { font-size: 30px; font-weight: 700; margin-bottom: 12px; }
.notfound-area p { color: var(--text-secondary); margin-bottom: 24px; }
.recommend-section { margin-top: 42px; }
.recommend-title { font-size: 24px; font-weight: 700; color: var(--text-main); margin-bottom: 20px; display: flex; align-items: center; gap: 10px; }
.recommend-title i { color: var(--brand-blue); font-size: 20px; }
.recommend-grid .no-recommend-msg { background: var(--bg-white); border: 1px dashed var(--border-light); border-radius: var(--radius-md); color: var(--text-light); font-size: 14px; padding: 24px; text-align: center; }
.site-footer { background: #fffffe; border-top: 1px solid var(--border-light); padding: 62px 0 10px; margin-top: 0; }
.site-footer .footer-brand-name { display: flex; align-items: center; gap: 12px; font-weight: 700; font-size: 22px; color: var(--text-main); margin-bottom: 6px; }
.footer-how { font-size: 11px; letter-spacing: .14em; color: var(--text-light); margin: 4px 0 14px; }
.footer-desc { color: var(--text-secondary); font-size: 15px; max-width: 360px; line-height: 1.9; }
.site-footer .footer-title { font-size: 15px; font-weight: 600; color: var(--text-main); margin-bottom: 16px; padding-bottom: 8px; position: relative; }
.footer-title::after { content: ""; position: absolute; left: 0; bottom: 0; width: 22px; height: 3px; border-radius: 3px; background: var(--brand-blue); }
.footer-link-list { list-style: none; padding: 0; margin: 0; }
.footer-link-list li { margin-bottom: 9px; }
.footer-link-list li a { color: var(--text-secondary); font-size: 14px; display: inline-flex; align-items: center; gap: 6px; transition: color .2s ease, padding-left .2s ease; }
.footer-link-list li a:hover { color: var(--brand-blue); padding-left: 5px; }
.footer-info-row { display: flex; gap: 10px; font-size: 14px; color: var(--text-secondary); margin-bottom: 12px; line-height: 1.7; }
.footer-info-row i { color: var(--brand-blue); font-size: 14px; margin-top: 5px; width: 16px; text-align: center; }
.footer-bottom { border-top: 1px solid var(--border-light); padding: 18px 0 20px; margin-top: 34px; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px; font-size: 13px; color: var(--text-light); }
.footer-bottom-tech { letter-spacing: .02em; }
.backtop-btn { display: inline-flex; align-items: center; gap: 6px; background: var(--bg-soft); border: 1px solid var(--border-light); border-radius: 999px; color: var(--text-main); font-size: 13px; padding: 8px 18px; transition: all .2s ease; }
.backtop-btn:hover { background: var(--brand-blue); color: #fff; border-color: var(--brand-blue); }
.footer-content-flex { row-gap: 30px; }
@media (max-width: 1199.98px) {
  .article-main-card { padding: 44px 36px 36px; }
}
@media (max-width: 991.98px) {
  .site-header { height: auto; }
  .custom-nav { min-height: 68px; }
  .site-nav { padding-left: 0; padding: 14px 0 6px; }
  .site-nav .nav-link { padding: 10px 10px !important; font-size: 16px; }
  .site-nav .nav-link.active::after { display: none; }
  .nav-actions { padding: 14px 0 10px; }
  .article-content-inner { max-width: 100%; }
  .article-main-card { padding: 38px 30px 30px; }
  .article-side-toc { display: none; }
  .article-title-row h1 { font-size: 30px; }
  .article-body-wrap { font-size: 16px; }
}
@media (max-width: 767.98px) {
  .article-layout { padding: 14px 0 50px; }
  .article-main-card { border-radius: 16px; padding: 30px 22px 24px; }
  .article-title-row h1 { font-size: 25px; line-height: 1.45; }
  .breadcrumb-bar { font-size: 13px; }
  .article-meta-list { gap: 4px 8px; font-size: 13px; }
  .article-body-wrap h2 { font-size: 20px; }
  .article-body-wrap h3 { font-size: 18px; }
  .site-footer footer { padding-bottom: 0; }
  .footer-bottom { justify-content: center; text-align: center; line-height: 1.8; }
  .backtop-btn { margin-top: 4px; }
  .footer-bottom { font-size: 12px; }
}
@media (max-width: 575.98px) {
  .article-main-card { padding: 26px 17px 22px; }
  .article-title-row h1 { font-size: 22px; }
  .article-body-wrap { font-size: 16px; }
  .article-body-wrap blockquote { padding-left: 38px; padding-right: 14px; }
  .article-body-wrap .alert-callout { flex-direction: row; }
  .breadcrumb-current { max-width: 170px; }
}

/* roulang page: category1 */
:root {
  --brand: #1B5CFF;
  --brand-dark: #0F45CD;
  --brand-soft: #EBF2FF;
  --accent: #17A294;
  --accent-soft: #E5F7F4;
  --alert: #F07763;
  --bg-body: #F7F9FD;
  --bg-soft: #EFF4FC;
  --surface: #FFFFFF;
  --border: #E3EBF6;
  --text-main: #17233D;
  --text-muted: #5D6D86;
  --text-weak: #8E9DB2;
  --shadow-sm: 0 6px 18px rgba(33, 72, 132, 0.06);
  --shadow-md: 0 14px 34px rgba(33, 72, 132, 0.10);
  --shadow-lg: 0 24px 55px rgba(33, 72, 132, 0.14);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 22px;
}

html {
  scroll-behavior: smooth;
}

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

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

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

button,
input {
  font-family: inherit;
}

*:focus-visible {
  outline: 3px solid rgba(27, 92, 255, 0.3);
  outline-offset: 2px;
}

.container {
  max-width: 1220px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1200;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: box-shadow .25s ease, background .25s ease;
}

.site-header.is-scrolled {
  border-bottom-color: var(--border);
  box-shadow: 0 6px 22px rgba(33, 72, 132, 0.08);
}

.custom-nav {
  min-height: 68px;
  padding: 0;
}

.site-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-right: 28px;
}

.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  height: 38px;
  padding: 0 8px;
  border-radius: 11px;
  background: var(--brand);
  color: #fff;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: .05em;
  line-height: 1;
}

.logo-text {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: .01em;
  line-height: 1.2;
  color: var(--text-main);
  white-space: nowrap;
}

.logo-text small {
  display: block;
  margin-top: 4px;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .12em;
  color: var(--text-weak);
  line-height: 1;
}

.site-nav {
  gap: 2px;
}

.site-nav .nav-link {
  padding: 8px 14px;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 15px;
  border-radius: 10px;
  position: relative;
  transition: color .18s ease, background .18s ease;
}

.site-nav .nav-link:hover {
  color: var(--brand);
  background: var(--brand-soft);
}

.site-nav .nav-link.active {
  color: var(--brand);
  background: var(--brand-soft);
  font-weight: 700;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: 8px;
}

.nav-link-soft {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 600;
  padding: 8px 10px;
  border-radius: 10px;
  transition: color .2s ease, background .2s ease;
}

.nav-link-soft:hover {
  color: var(--brand);
  background: var(--brand-soft);
}

.nav-cta {
  border-radius: 10px;
}

.btn {
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.btn-brand {
  background: var(--brand);
  border: 1px solid var(--brand);
  color: #fff;
  min-height: 50px;
  padding: 0 26px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: background .2s ease, color .2s ease, border-color .2s ease, transform .2s ease, box-shadow .2s ease;
}

.btn-brand:hover,
.btn-brand:focus {
  background: var(--brand-dark);
  border-color: var(--brand-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 12px 26px rgba(27, 92, 255, 0.20);
}

.btn-outline-brand {
  background: #fff;
  border: 1px solid #C7D8F5;
  color: var(--brand);
  min-height: 50px;
  padding: 0 26px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: background .2s ease, border-color .2s ease, transform .2s ease;
}

.btn-outline-brand:hover,
.btn-outline-brand:focus {
  background: var(--brand-soft);
  border-color: var(--brand);
  color: var(--brand);
  transform: translateY(-1px);
}

.custom-toggler {
  border: 0;
  background: transparent;
  box-shadow: none !important;
  width: 42px;
  height: 42px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.toggler-inner,
.toggler-inner span {
  display: block;
  width: 22px;
}

.toggler-inner span {
  height: 2px;
  margin: 5px 0;
  background: var(--text-main);
  border-radius: 4px;
  transition: transform .2s ease, opacity .2s ease;
}

.hero-breadcrumb {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--border);
  padding: 7px 14px;
  border-radius: 50px;
  font-size: 13px;
  color: var(--text-muted);
  box-shadow: var(--shadow-sm);
  margin-bottom: 20px;
}

.hero-breadcrumb i {
  color: var(--brand);
  font-size: 12px;
}

.hero-breadcrumb a:hover {
  color: var(--brand);
}

.cat-hero {
  padding: 70px 0 62px;
  background-color: #F3F8FF;
  background-image: url("/assets/images/backpic/back-1.png");
  background-repeat: no-repeat;
  background-position: right -120px bottom -60px;
  background-size: auto 340px;
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

.cat-hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 430px);
  gap: 48px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--brand);
  text-transform: uppercase;
  margin-bottom: 14px;
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--brand);
  border-radius: 4px;
}

.cat-hero-copy h1 {
  font-size: 44px;
  line-height: 1.35;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 18px;
}

.cat-hero-copy h1 .brand-highlight {
  color: var(--brand);
}

.cat-hero-copy .hero-sub {
  font-size: 17px;
  line-height: 1.95;
  color: var(--text-muted);
  max-width: 580px;
  margin-bottom: 24px;
}

.hero-note {
  display: inline-flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.7;
  border-top: 1px solid var(--border);
  padding-top: 18px;
  max-width: 560px;
}

.hero-note i {
  color: var(--accent);
  margin-top: 5px;
}

.hero-media {
  position: relative;
}

.hero-media::before {
  content: "";
  position: absolute;
  inset: -18px -18px 18px 18px;
  background: #dbe7ff;
  border-radius: 40% 60% 60% 40% / 34% 44% 56% 66%;
  opacity: .5;
}

.hero-media-card {
  position: relative;
  z-index: 2;
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: 10px;
  box-shadow: var(--shadow-lg);
}

.hero-media-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: calc(var(--radius-lg) - 6px);
}

.hero-media-tag {
  position: absolute;
  right: -6px;
  top: 34px;
  z-index: 5;
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  padding: 9px 16px;
  border-radius: 30px;
  font-size: 14px;
  font-weight: 700;
  color: var(--brand);
}

@media (max-width: 991px) {
  .cat-hero {
    padding: 42px 0 54px;
  }
  .cat-hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
  }
  .cat-hero-copy h1 {
    font-size: 34px;
  }
  .hero-media {
    max-width: 560px;
  }
  .navbar-collapse {
    background: #fff;
    border-radius: 0 0 18px 18px;
    padding: 10px 16px 18px;
    border: 1px solid var(--border);
    border-top: 0;
    box-shadow: var(--shadow-md);
    margin-top: 8px;
  }
  .site-nav .nav-link {
    padding: 11px 6px;
    border-bottom: 1px solid var(--border);
    border-radius: 0;
  }
  .site-nav .nav-link.active {
    background: transparent;
  }
  .nav-actions {
    margin: 14px 0 4px;
    flex-wrap: wrap;
  }
}

.section-block {
  padding: 94px 0;
}

.section-block.bg-page {
  background: var(--surface);
}

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

.section-head {
  margin-bottom: 42px;
  max-width: 900px;
}

.section-title {
  font-size: 31px;
  line-height: 1.4;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 4px 0 12px;
  color: var(--text-main);
}

.section-title .accent-text {
  color: var(--brand);
}

.section-lead {
  font-size: 17px;
  color: var(--text-muted);
  max-width: 760px;
  line-height: 1.9;
  margin-bottom: 0;
}

@media (max-width: 767px) {
  .section-block {
    padding: 60px 0;
  }
  .section-title {
    font-size: 24px;
  }
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-sm);
  transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.feature-card:hover,
.feature-card:focus-within {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: #8DB6FF;
}

.feature-icon {
  width: 56px;
  height: 56px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 18px;
  background: var(--brand-soft);
  color: var(--brand);
  font-size: 23px;
  margin-bottom: 22px;
}

.feature-icon.accent {
  background: var(--accent-soft);
  color: var(--accent);
}

.feature-card h3 {
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 10px;
  color: var(--text-main);
}

.feature-card p {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.85;
  margin-bottom: 18px;
  flex: 1;
}

.feature-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 700;
  color: var(--brand);
}

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

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

@media (max-width: 767px) {
  .feature-grid {
    grid-template-columns: 1fr;
  }
}

.compare-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.compare-row {
  display: grid;
  grid-template-columns: 190px minmax(0, 1.2fr) minmax(0, 1.2fr);
}

.compare-row:not(:last-child) {
  border-bottom: 1px solid var(--border);
}

.compare-cell {
  padding: 20px 22px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-muted);
  background: var(--surface);
}

.compare-cell:not(:last-child) {
  border-right: 1px solid var(--border);
}

.compare-head .compare-cell {
  background: #EFF4FF;
  color: var(--text-main);
  font-weight: 800;
  font-size: 15px;
}

.compare-cell.cell-scene {
  font-weight: 700;
  color: var(--text-main);
}

.compare-note {
  margin-top: 22px;
  display: flex;
  gap: 10px;
  color: var(--text-weak);
  font-size: 14px;
  line-height: 1.7;
}

.compare-note i {
  color: var(--accent);
  margin-top: 4px;
}

@media (max-width: 767px) {
  .compare-panel {
    overflow: visible;
    border: 0;
    background: transparent;
    box-shadow: none;
  }
  .compare-row {
    grid-template-columns: 1fr;
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
    background: #fff;
    box-shadow: var(--shadow-sm);
    margin-bottom: 16px;
  }
  .compare-row.compare-head {
    display: none;
  }
  .compare-cell {
    padding: 14px 18px;
  }
  .compare-cell:not(:last-child) {
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }
  .compare-cell[data-label]::before {
    content: attr(data-label);
    display: block;
    font-size: 13px;
    font-weight: 700;
    color: var(--text-weak);
    margin-bottom: 4px;
  }
  .compare-cell.cell-scene {
    padding-bottom: 10px;
  }
}

.scene-card-list {
  display: flex;
  flex-direction: column;
  gap: 26px;
}

.scene-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.scene-card .scene-media img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 0;
}

.scene-card .scene-media {
  position: relative;
}

.scene-card .scene-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(23, 35, 61, 0.05) 100%);
}

.scene-media img {
  width: 100%;
  object-fit: cover;
}

.scene-media .media-tag {
  position: absolute;
  z-index: 3;
  left: 16px;
  top: 16px;
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid rgba(255, 255, 255, 0.75);
  color: var(--brand);
  font-size: 13px;
  font-weight: 800;
  padding: 6px 12px;
  border-radius: 30px;
  box-shadow: var(--shadow-sm);
}

.scene-copy {
  padding: 28px 30px 10px;
}

.scene-copy h3 {
  font-size: 21px;
  font-weight: 800;
  margin-bottom: 12px;
  color: var(--text-main);
}

.scene-copy p {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.85;
  margin-bottom: 14px;
}

.scene-point-list {
  list-style: none;
  padding: 0 0 22px;
  margin: 0;
}

.scene-point-list li {
  display: flex;
  gap: 9px;
  padding: 6px 30px;
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.75;
}

.scene-point-list li i {
  color: var(--accent);
  margin-top: 5px;
  font-size: 13px;
}

.scene-point-list li::marker {
  content: "";
}

@media (min-width: 992px) {
  .scene-card .row {
    min-height: 100%;
  }
  .scene-card .scene-media {
    height: 100%;
  }
  .scene-card .scene-media img {
    height: 100%;
    min-height: 280px;
    aspect-ratio: auto;
    object-fit: cover;
  }
}

@media (max-width: 767px) {
  .scene-media img {
    aspect-ratio: 16 / 9;
  }
  .scene-copy {
    padding: 22px 20px 0;
  }
  .scene-point-list li {
    padding: 6px 20px;
    font-size: 14px;
  }
}

.steps-area {
  max-width: 880px;
  margin: 0 auto;
}

.step-item {
  position: relative;
  display: grid;
  grid-template-columns: 86px minmax(0, 1fr);
  gap: 22px;
  padding: 26px 0;
}

.step-item:not(:last-child)::before {
  content: "";
  position: absolute;
  left: 43px;
  top: 72px;
  bottom: -42px;
  width: 2px;
  background: #D9E7FF;
}

.step-no {
  width: 68px;
  height: 68px;
  background: var(--surface);
  border: 1px solid #CFE0FD;
  border-radius: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 800;
  color: var(--brand);
  box-shadow: var(--shadow-sm);
}

.step-content h3 {
  font-size: 19px;
  font-weight: 800;
  margin-bottom: 8px;
  color: var(--text-main);
}

.step-content p {
  color: var(--text-muted);
  font-size: 15.5px;
  max-width: 640px;
  margin-bottom: 0;
}

@media (max-width: 575px) {
  .step-item {
    grid-template-columns: 1fr;
    gap: 14px;
    padding: 16px 0;
  }
  .step-no {
    width: 54px;
    height: 54px;
    font-size: 17px;
    border-radius: 18px;
  }
  .step-item:not(:last-child)::before {
    display: none;
  }
}

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

.faq-accordion .accordion-item {
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--border);
  border-radius: 0 !important;
}

.faq-accordion .accordion-button {
  background: transparent;
  box-shadow: none;
  font-size: 17px;
  font-weight: 700;
  color: var(--text-main);
  padding: 22px 4px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.faq-accordion .accordion-button.collapsed {
  color: var(--text-main);
}

.faq-accordion .accordion-button:not(.collapsed) {
  color: var(--brand);
  background: transparent;
}

.faq-accordion .accordion-button::after {
  display: none;
}

.faq-accordion .faq-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--brand-soft);
  color: var(--brand);
  flex: 0 0 28px;
  transition: transform .25s ease, background .2s ease;
}

.faq-accordion .accordion-button:not(.collapsed) .faq-toggle {
  transform: rotate(135deg);
  background: var(--brand);
  color: #fff;
}

.faq-accordion .accordion-body {
  padding: 0 44px 24px 4px;
  color: var(--text-muted);
  font-size: 15.5px;
  line-height: 1.85;
}

@media (max-width: 767px) {
  .faq-accordion .accordion-button {
    font-size: 15px;
    padding: 18px 2px;
    gap: 14px;
  }
  .faq-accordion .accordion-body {
    padding: 0 20px 20px 2px;
    font-size: 14.5px;
  }
}

.join-area {
  padding: 60px 0 90px;
}

.join-panel {
  background: linear-gradient(115deg, #DCE8FF 0%, #EEF4FF 48%, #F9FBFE 100%);
  border: 1px solid #D3E0FA;
  border-radius: 28px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.join-panel .row {
  align-items: stretch;
}

.join-copy {
  padding: 52px 40px 40px;
}

.join-copy .eyebrow::before {
  background: var(--accent);
}

.join-copy .eyebrow {
  color: var(--accent);
}

.join-copy h2 {
  font-size: 28px;
  font-weight: 800;
  line-height: 1.45;
  margin-bottom: 14px;
  color: var(--text-main);
}

.join-copy p {
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1.85;
  max-width: 520px;
  margin-bottom: 26px;
}

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

.join-visual {
  height: 100%;
  min-height: 300px;
  background: #f4f7fb;
}

.join-visual img {
  width: 100%;
  height: 100%;
  min-height: 300px;
  object-fit: cover;
}

@media (max-width: 991px) {
  .join-copy {
    padding: 34px 26px;
  }
  .join-visual {
    min-height: 260px;
  }
}

.site-footer {
  background: #EFF2F7;
  border-top: 1px solid #DAE3F0;
  padding: 66px 0 28px;
  color: var(--text-muted);
}

.footer-brand-name {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 800;
  color: var(--text-main);
}

.footer-how {
  font-size: 12px;
  color: var(--text-weak);
  letter-spacing: .12em;
  margin: 12px 0 14px;
}

.footer-desc {
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-muted);
  max-width: 360px;
}

.footer-title {
  font-size: 15px;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 18px;
  letter-spacing: .02em;
}

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

.footer-link-list li + li {
  margin-top: 12px;
}

.footer-link-list a {
  color: var(--text-muted);
  font-size: 14.5px;
  transition: color .2s ease, padding-left .2s ease;
}

.footer-link-list a:hover {
  color: var(--brand);
  padding-left: 4px;
}

.footer-info-row {
  display: flex;
  gap: 10px;
  color: var(--text-muted);
  font-size: 14.5px;
  line-height: 1.8;
  margin-bottom: 22px;
}

.footer-info-row i {
  margin-top: 5px;
  color: var(--brand);
}

.footer-bottom {
  margin-top: 54px;
  padding-top: 24px;
  border-top: 1px solid #D6E0EF;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  font-size: 13.5px;
  color: var(--text-weak);
}

.backtop-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  border: 1px solid var(--border);
  padding: 9px 16px;
  border-radius: 30px;
  color: var(--text-muted);
  font-size: 13.5px;
  font-weight: 700;
  transition: background .2s ease, color .2s ease, border-color .2s ease, transform .2s ease;
  cursor: pointer;
}

.backtop-btn:hover {
  color: var(--brand);
  border-color: var(--brand);
  background: var(--brand-soft);
  transform: translateY(-2px);
}

@media (max-width: 767px) {
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

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

/* roulang page: category2 */
:root{
  --bg:#F7FAFE;
  --surface:#FFFFFF;
  --primary:#1B5CFF;
  --primary-dark:#144EDC;
  --primary-soft:#EAF1FF;
  --mint:#1FB391;
  --mint-soft:#E4F8F1;
  --coral:#F2545B;
  --amber:#F2A63A;
  --text:#15233C;
  --text-2:#5E708B;
  --text-3:#93A2B8;
  --line:#E6EEF7;
  --shadow-xs:0 4px 14px rgba(34,78,146,.05);
  --shadow-sm:0 8px 26px rgba(34,78,146,.07);
  --shadow-md:0 18px 50px rgba(31,72,145,.10);
  --radius-sm:10px;
  --radius-md:16px;
  --radius-lg:24px;
  --container-w:1260px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei UI","Noto Sans CJK SC","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--primary-dark);}
button,input,select,textarea{font-family:inherit;}
.container{max-width:var(--container-w);padding-left:20px;padding-right:20px;}
.page-main{overflow:hidden;}

.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--primary);color:#fff;font-weight:600;border:1px solid var(--primary);
  border-radius:12px;padding:0 24px;height:48px;min-height:48px;font-size:15px;
  transition:all .22s ease;
}
.btn-brand:hover{background:var(--primary-dark);border-color:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:0 12px 24px rgba(27,92,255,.24);}
.btn-outline-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:#fff;color:var(--primary);border:1px solid #CADBFF;font-weight:600;
  border-radius:12px;padding:0 22px;height:48px;min-height:48px;font-size:15px;
  transition:all .22s ease;
}
.btn-outline-brand:hover{background:var(--primary-soft);border-color:var(--primary);color:var(--primary-dark);transform:translateY(-1px);}
.btn-white{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:#fff;color:var(--primary);border-radius:12px;font-weight:600;
  border:none;padding:0 22px;height:48px;min-height:48px;transition:all .22s ease;
}
.btn-white:hover{background:var(--primary-soft);transform:translateY(-1px);color:var(--primary-dark);}
.link-more{font-weight:600;color:var(--primary);font-size:14px;}
.link-more i{transition:transform .2s;}
.link-more:hover{color:var(--primary-dark);}
.link-more:hover i{transform:translateX(4px);}

.site-header{
  position:sticky;top:0;z-index:1080;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(230,238,247,.86);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.scrolled{background:#fff;box-shadow:0 8px 26px rgba(34,78,146,.06);}
.custom-nav{padding-top:0;padding-bottom:0;min-height:68px;}
.site-logo{display:flex;align-items:center;gap:10px;margin-right:26px;}
.logo-mark{
  width:38px;height:38px;border-radius:12px;background:var(--primary);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:14px;font-weight:800;letter-spacing:.6px;
  box-shadow:0 6px 14px rgba(27,92,255,.22);
}
.logo-text{display:flex;flex-direction:column;line-height:1.1;color:var(--text);}
.logo-text .main-text{font-weight:800;font-size:21px;letter-spacing:1px;color:#0B2140;}
.logo-text .logo-sub{font-size:9px;letter-spacing:2.2px;color:#8092AD;font-weight:600;margin-top:3px;}
.site-logo:hover .logo-text .main-text{color:var(--primary);}

.site-nav{margin:0 auto;}
.custom-nav .navbar-nav .nav-link{
  padding:22px 12px;margin:0 2px;color:#33465F;font-weight:600;font-size:15px;
  border-radius:0;position:relative;white-space:nowrap;transition:color .2s;
}
.custom-nav .navbar-nav .nav-link::after{
  content:"";position:absolute;left:10px;right:10px;bottom:10px;height:3px;border-radius:8px;
  background:var(--primary);opacity:0;transform:scaleX(.4);transition:all .24s ease;
}
.custom-nav .navbar-nav .nav-link:hover{color:var(--primary);}
.custom-nav .navbar-nav .nav-link:hover::after{opacity:.8;transform:scaleX(1);}
.custom-nav .navbar-nav .nav-link.active{color:var(--primary);}
.custom-nav .navbar-nav .nav-link.active::after{opacity:1;transform:scaleX(1);}

.nav-actions{display:flex;align-items:center;gap:8px;}
.nav-actions .nav-link-soft{
  display:inline-flex;align-items:center;gap:6px;color:#4C6076;font-weight:600;font-size:14px;
  padding:7px 12px;border-radius:10px;transition:background .2s;
}
.nav-actions .nav-link-soft:hover{background:#F0F5FC;color:var(--primary-dark);}
.custom-toggler{border:none;outline:none;padding:8px;}
.custom-toggler:focus{box-shadow:none;}
.toggler-inner{display:flex;flex-direction:column;gap:5px;width:24px;}
.toggler-inner span{height:2px;border-radius:4px;background:#1F3352;transition:all .25s;}

.category-banner{
  position:relative;
  padding:84px 0 70px;
  background:linear-gradient(150deg,#FFFFFF 0%,#F2F7FE 62%,#EAF2FF 100%);
  border-bottom:1px solid var(--line);
}
.category-banner .banner-grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,.9fr);gap:64px;align-items:center;}
.breadcrumb-wrap{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:24px;flex-wrap:wrap;}
.breadcrumb-wrap a{color:var(--text-3);font-weight:500;}
.breadcrumb-wrap a:hover{color:var(--primary);}
.breadcrumb-wrap .sep{color:#B7C4D8;}
.cat-eyebrow{
  display:inline-flex;align-items:center;gap:10px;background:var(--primary-soft);
  color:var(--primary);border-radius:999px;padding:7px 16px;font-size:13px;font-weight:700;
  letter-spacing:.4px;margin-bottom:18px;
}
.cat-eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--primary);}
.category-banner h1{
  font-size:44px;line-height:1.35;letter-spacing:.5px;margin:0 0 22px;
  font-weight:800;color:#0E1D38;
}
.category-banner h1 span{color:var(--primary);}
.banner-lead{font-size:17px;line-height:2;color:var(--text-2);max-width:33rem;margin:0 0 22px;}
.banner-points{list-style:none;margin:0 0 32px;padding:0;display:flex;flex-wrap:wrap;gap:10px 20px;}
.banner-points li{display:inline-flex;align-items:center;gap:8px;color:#3E536E;font-size:14px;font-weight:600;}
.banner-points i{width:22px;height:22px;background:#fff;color:var(--primary);border-radius:7px;font-size:11px;display:inline-flex;align-items:center;justify-content:center;box-shadow:var(--shadow-xs);}
.banner-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap;}

.banner-visual{position:relative;}
.visual-main{
  position:relative;border-radius:28px;box-shadow:var(--shadow-md);overflow:hidden;
  aspect-ratio:.92;background:#EAF1FF;
}
.visual-main img{width:100%;height:100%;object-fit:cover;display:block;}
.visual-caption{
  position:absolute;left:18px;right:18px;bottom:18px;background:rgba(255,255,255,.92);
  backdrop-filter:blur(8px);border-radius:16px;padding:14px 16px;display:flex;align-items:center;gap:12px;
  box-shadow:var(--shadow-sm);
}
.visual-caption .mini-ico{width:36px;height:36px;flex:0 0 36px;border-radius:10px;background:var(--primary-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;}
.visual-caption strong{font-size:15px;color:#13253F;}
.visual-caption small{font-size:13px;color:var(--text-2);}
.visual-badge{
  position:absolute;right:-10px;top:34px;background:var(--coral);color:#fff;
  font-size:13px;font-weight:700;border-radius:12px 4px 12px 4px;padding:8px 14px;
  box-shadow:0 8px 18px rgba(242,84,91,.24);
}
.visual-ring{
  position:absolute;right:-42px;bottom:-36px;width:150px;height:150px;border-radius:50%;
  border:30px solid rgba(27,92,255,.08);pointer-events:none;
}
.visual-note{
  position:absolute;left:-38px;top:8%;background:var(--mint-soft);color:#11866F;
  font-size:14px;font-weight:700;padding:12px 16px;border-radius:16px;
  box-shadow:var(--shadow-xs);display:inline-flex;align-items:center;gap:8px;z-index:2;
}

.tax-block{padding:52px 0 38px;}
.tax-head{display:flex;align-items:end;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:24px;}
.tax-head .h2-title{margin-bottom:0;}
.h2-title{font-size:30px;font-weight:800;letter-spacing:.3px;color:#102038;line-height:1.45;}
.section-sub{color:var(--text-2);max-width:40rem;font-size:16px;}
.tax-scroll{
  display:flex;gap:12px;overflow-x:auto;padding:4px 2px 18px;scrollbar-width:none;
}
.tax-scroll::-webkit-scrollbar{display:none;}
.tax-pill{
  display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid #E5EDF7;
  color:#405674;font-weight:600;font-size:14px;padding:10px 18px;border-radius:999px;
  flex:0 0 auto;transition:all .2s ease;box-shadow:var(--shadow-xs);
}
.tax-pill:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);box-shadow:var(--shadow-sm);}
.tax-pill i{color:var(--primary);}

.services-block{padding:66px 0;background:#fff;}
.block-head{margin:0 0 38px;display:flex;flex-wrap:wrap;align-items:end;justify-content:space-between;gap:16px;}
.block-head .h2-title{display:inline-flex;align-items:center;gap:10px;}
.block-head .h2-title .bar{width:6px;height:30px;border-radius:8px;background:var(--primary);display:inline-block;}
.service-kind-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:28px;}
.kind-tile{
  position:relative;border-radius:22px;overflow:hidden;background:#fff;
  box-shadow:var(--shadow-sm);border:1px solid #EAF0F7;
  transition:transform .3s ease,box-shadow .3s ease;
  display:flex;flex-direction:column;
}
.kind-tile:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);}
.kind-tile .kind-cover{position:relative;overflow:hidden;aspect-ratio:4/3;background:#DCEAFF;}
.kind-tile .kind-cover img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease;}
.kind-tile:hover .kind-cover img{transform:scale(1.06);}
.kind-tile .kind-layer{position:absolute;inset:auto 0 0 0;height:38%;background:linear-gradient(180deg,rgba(8,18,30,0),rgba(8,18,30,.48));}
.kind-tile .kind-tag{
  position:absolute;left:16px;top:16px;background:rgba(255,255,255,.92);color:#1B3A5C;
  padding:5px 12px;border-radius:999px;font-size:12px;font-weight:800;letter-spacing:.3px;
}
.kind-tile .coral-tag{color:#C54348;background:#FFF4F4;}
.kind-tile .mint-tag{color:#128B78;background:#EAFBF5;}
.kind-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1;}
.kind-body h3{font-size:20px;font-weight:800;margin:0 0 10px;color:#13233E;}
.kind-body p{color:var(--text-2);font-size:14px;line-height:1.9;margin:0 0 16px;}
.kind-body .line-link{
  margin-top:auto;font-weight:700;color:var(--primary);font-size:14px;
  display:inline-flex;align-items:center;gap:6px;
}
.kind-body .line-link i{transition:transform .2s;}
.kind-body .line-link:hover{color:var(--primary-dark);}
.kind-body .line-link:hover i{transform:translateX(4px);}

.special-pair{display:grid;grid-template-columns:1.2fr .8fr;gap:22px;margin-top:26px;}
.pack-mini{
  border-radius:20px;padding:30px 32px;background:linear-gradient(135deg,#F6FAFF,#EDF5FF);
  border:1px solid #DCE8F7;display:flex;justify-content:space-between;align-items:center;gap:24px;
}
.pack-mini.green-card{background:linear-gradient(135deg,#F5FDF9,#EAF8F2);border-color:#D8EFE5;}
.pack-mini .pack-icon{width:52px;height:52px;flex:0 0 52px;border-radius:16px;background:#fff;color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:22px;box-shadow:var(--shadow-sm);}
.pack-mini.green-card .pack-icon{color:var(--mint);}
.pack-mini h3{font-size:18px;font-weight:800;margin:15px 0 6px;}
.pack-mini p{margin:0;color:var(--text-2);font-size:14px;line-height:1.8;}
.pack-mini .pack-link{white-space:nowrap;font-weight:700;font-size:14px;}

.hot-recommend-block{padding:52px 0 0;}
.hot-recommend-grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr);gap:42px;} 
.hot-list-card{
 background:#fff;border:1px solid #E9F0F8;border-radius:24px;box-shadow:var(--shadow-sm);
 padding:0 22px;overflow:hidden;
}
.section-title-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-bottom:16px;border-bottom:1px solid #EDF2F9;margin-bottom:6px;}
.section-title-row h2{font-size:24px;margin:0;} 
.hot-rows{padding:0;margin:0;}
.hot-row{display:flex;align-items:center;gap:18px;padding:20px 4px;border-bottom:1px solid #F1F5FB;}
.hot-row:last-child{border-bottom:none;}
.hot-row .row-num{width:36px;height:36px;flex:0 0 36px;border-radius:10px;background:#F3F7FD;color:#556A88;font-weight:800;display:flex;align-items:center;justify-content:center;font-size:14px;}
.hot-row:nth-child(2) .row-num{background:var(--primary-soft);color:var(--primary);}
.hot-row .row-main{min-width:0;flex:1;}
.hot-row .row-main strong{display:block;font-size:17px;color:#14253E;font-weight:800;line-height:1.5;}
.hot-row .row-main p{margin:4px 0 0;color:var(--text-2);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.hot-row .row-badge{flex:0 0 auto;}
.custom-badge{font-size:12px;padding:5px 11px;border-radius:999px;background:var(--primary-soft);color:var(--primary);font-weight:700;white-space:nowrap;}
.custom-badge.mint{background:var(--mint-soft);color:#168C73;}
.custom-badge.coral{background:#FFF0F0;color:#D84A52;}
.hot-row .row-action{flex:0 0 auto;width:34px;height:34px;border-radius:10px;background:#F3F7FD;color:#66809E;display:flex;align-items:center;justify-content:center;font-size:14px;transition:all .22s;}
.hot-row:hover .row-action{background:var(--primary);color:#fff;transform:translateX(4px);}

.visual-stack-card{
  border-radius:24px;background:#E9F0FA;overflow:hidden;position:relative;
  min-height:280px;display:flex;flex-direction:column;justify-content:flex-end;
  box-shadow:var(--shadow-sm);aspect-ratio:8/6;
}
.visual-stack-card > img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.gradient-dark{position:absolute;inset:0;background:linear-gradient(160deg,rgba(8,23,42,0) 42%,rgba(8,23,42,.72) 100%);}
.stack-content{position:relative;padding:26px;z-index:1;}
.stack-content h3{color:#fff;font-size:24px;margin:0 0 6px;}
.stack-content p{color:rgba(255,255,255,.84);font-size:15px;margin:0 0 14px;}
.stack-content .stack-chip{display:inline-flex;background:rgba(255,255,255,.94);color:#18334F;padding:5px 12px;border-radius:999px;font-size:12px;font-weight:700;}

.update-area{padding:80px 0;}
.update-wrap{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:60px;align-items:start;}
.timeline-box{position:relative;padding-left:34px;}
.timeline-box::before{content:"";position:absolute;left:9px;top:8px;bottom:8px;width:2px;background:linear-gradient(var(--primary-soft),#BFD6FF);border-radius:4px;}
.step-item{position:relative;padding:14px 0 28px;}
.step-item:last-child{padding-bottom:0;}
.step-item .step-dot{position:absolute;left:-34px;top:18px;width:20px;height:20px;border-radius:50%;background:#fff;border:5px solid var(--primary);box-shadow:0 0 0 6px rgba(27,92,255,.1);}
.step-item:nth-child(even) .step-dot{border-color:var(--mint);box-shadow:0 0 0 6px rgba(31,179,145,.1);}
.step-item h3{font-size:18px;font-weight:800;color:#172A46;margin:0 0 6px;}
.step-item p{margin:0;color:var(--text-2);font-size:14px;}
.step-tag{display:inline-block;margin-right:8px;font-weight:700;color:var(--primary);font-size:13px;}
.schedule-panel{
  background:#fff;border-radius:24px;box-shadow:var(--shadow-sm);border:1px solid #E9F0F8;
  padding:30px 28px;
}
.schedule-panel h3{font-size:20px;font-weight:800;color:#0E2342;margin:0 0 4px;}
.schedule-panel .panel-sub{color:var(--text-2);font-size:14px;margin-bottom:22px;}
.cal-chip-wrap{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:20px;}
.cal-month{
  display:inline-flex;align-items:center;gap:8px;background:var(--primary-soft);color:var(--primary);
  border-radius:12px;padding:10px 16px;font-size:14px;font-weight:800;
}
.cal-list{list-style:none;margin:0;padding:0;}
.cal-list li{
  display:flex;align-items:flex-start;gap:12px;padding:13px 0;border-bottom:1px solid #F0F5FB;font-size:15px;
}
.cal-list li:last-child{border-bottom:none;}
.cal-list .day{flex:0 0 52px;color:var(--primary);font-weight:800;font-size:14px;}
.cal-list span.detail{color:#3E5571;font-weight:600;}
.cal-list small{display:block;color:var(--text-3);font-size:13px;font-weight:400;}
.panel-alert{
  background:#F7FAFD;border-radius:14px;padding:13px 16px;color:#60728B;font-size:13px;
  display:flex;gap:10px;align-items:flex-start;margin-top:8px;
}
.panel-alert i{color:var(--amber);margin-top:3px;}

.compare-section{background:#fff;border-top:1px solid #EDF3FA;padding:76px 0;}
.compare-wrap{
  background:#F8FBFE;border-radius:26px;padding:28px;border:1px solid #E4EDF7;
}
.compare-info{font-size:13px;color:var(--text-3);margin-top:14px;text-align:right;}
.cmp-grid{display:grid;grid-template-columns:200px repeat(3,1fr);min-width:780px;}
.cmp-scroll{overflow-x:auto;}
.cmp-head,.cmp-row{display:contents;}
.cmp-cell{
  background:#fff;padding:14px 18px;font-size:14px;color:#516884;line-height:1.7;
  border-bottom:1px solid #EEF3F9;vertical-align:middle;
}
.cmp-head .cmp-cell{
  background:#10233F;color:#fff;font-weight:700;font-size:15px;border-bottom:none;
}
.cmp-row:last-child .cmp-cell{border-bottom:none;}
.cmp-cell:first-child{font-weight:700;color:#253B58;}
.cmp-cell .cmp-check{color:var(--mint);margin-right:4px;}
.cmp-badge{display:inline-block;background:var(--primary-soft);color:var(--primary);border-radius:999px;padding:3px 10px;font-size:11px;font-weight:800;margin-left:6px;}
.round-table{
  border-radius:16px;overflow:hidden;border:1px solid #E7EEF7;box-shadow:var(--shadow-xs);
}

.faq-section{padding:76px 0 62px;background:linear-gradient(180deg,#FAFCFF,#F2F7FD);}
.faq-grid{display:grid;grid-template-columns:.72fr 1.28fr;gap:52px;}
.faq-left .h2-title{margin:0 0 16px;}
.faq-left p{color:var(--text-2);font-size:15px;margin-bottom:24px;}
.faq-helper{background:#fff;border-radius:18px;padding:20px 22px;border:1px solid #E8F0F7;box-shadow:var(--shadow-xs);}
.faq-helper h4{font-size:16px;color:#183652;font-weight:800;margin:0 0 8px;}
.faq-helper p{font-size:14px;color:#5B6E88;margin-bottom:14px;}
.faq-helper .btn-brand{min-height:42px;height:42px;font-size:14px;padding:0 18px;}

.faq-acc .accordion-item{
  border:none;background:#fff;border-radius:18px !important;box-shadow:var(--shadow-xs);
  margin-bottom:14px;overflow:hidden;border:1px solid #E7EEF7;
}
.faq-acc .accordion-button{
  font-size:16px;font-weight:800;color:#172B46;padding:20px 52px 20px 24px;
  background:#fff;box-shadow:none;line-height:1.6;
}
.faq-acc .accordion-button:not(.collapsed){color:var(--primary);background:#FBFDFF;}
.faq-acc .accordion-button:after{
  background-image:none;content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  width:28px;height:28px;background:#F1F6FC;border-radius:50%;display:flex;align-items:center;justify-content:center;
  position:absolute;right:18px;top:18px;font-size:13px;line-height:28px;color:#607E9F;text-align:center;
  transition:transform .3s;
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:rotate(180deg);color:var(--primary);background:var(--primary-soft);}
.faq-acc .accordion-button:focus{box-shadow:none;}
.faq-acc .accordion-body{padding:0 24px 22px;color:var(--text-2);font-size:15px;border-top:1px dashed #ECF1F7;}

.join-area-section{padding:72px 0 70px;}
.join-card{
  position:relative;overflow:hidden;background:#fff;border-radius:30px;
  border:1px solid #E2EBF6;box-shadow:var(--shadow-md);padding:52px 56px;
  display:flex;align-items:center;justify-content:space-between;gap:30px;
}
.join-card::before{
  content:"";position:absolute;width:230px;height:230px;border-radius:50%;background:var(--primary-soft);
  right:-70px;top:-90px;opacity:.6;
}
.join-card .join-copy{position:relative;z-index:1;}
.join-card h2{font-size:32px;font-weight:800;color:#101F3A;margin:0 0 14px;}
.join-card p{margin:0;color:var(--text-2);max-width:33rem;}
.join-card .join-actions{display:flex;flex-wrap:wrap;gap:14px;z-index:2;position:relative;flex-shrink:0;}

.site-footer{background:#0D1C33;color:#B9C7DA;padding:66px 0 26px;}
.site-footer a{color:#B9C7DA;}
.site-footer a:hover{color:#fff;}
.footer-brand-name{display:flex;align-items:center;gap:10px;font-size:23px;color:#fff;font-weight:800;margin-bottom:14px;}
.footer-brand-name .logo-mark{background:#fff;color:var(--primary);width:34px;height:34px;font-size:13px;}
.footer-how{font-size:10px;letter-spacing:3px;color:#60738C;margin:0 0 10px;font-weight:600;}
.footer-desc{font-size:14px;max-width:26rem;line-height:1.9;color:#93A5BC;}
.footer-title{color:#fff;font-size:17px;margin:0 0 18px;font-weight:800;letter-spacing:.3px;}
.footer-link-list{list-style:none;padding:0;margin:0;}
.footer-link-list li{margin-bottom:11px;font-size:14px;}
.footer-link-list a{border-bottom:1px solid transparent;transition:all .2s;}
.footer-link-list a:hover{border-bottom-color:#fff;color:#fff;}
.footer-info-row{display:flex;align-items:flex-start;gap:10px;color:#B9C7DA;font-size:14px;line-height:1.9;margin-bottom:14px;}
.footer-info-row i{color:#6D90C0;margin-top:5px;}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;gap:16px;
  border-top:1px solid rgba(255,255,255,.12);margin-top:42px;padding-top:22px;
  color:#8091A8;font-size:13px;flex-wrap:wrap;
}
.backtop-btn{
  background:rgba(255,255,255,.12);border:none;border-radius:999px;color:#D9E4F0;
  padding:8px 14px;font-size:13px;display:inline-flex;align-items:center;gap:8px;transition:all .2s;
}
.backtop-btn:hover{background:var(--primary);color:#fff;}

:focus-visible{outline:3px solid rgba(27,92,255,.35);outline-offset:2px;border-radius:6px;}
.footer-link-list a:focus-visible,.faq-acc .accordion-button:focus-visible{box-shadow:0 0 0 4px rgba(27,92,255,.2);}

@media(max-width:1199px){
  .category-banner .banner-grid{gap:36px;}
  .category-banner h1{font-size:38px;}
  .service-kind-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .special-pair{grid-template-columns:1fr 1fr;}
  .faq-grid{grid-template-columns:1fr;gap:34px;}
  .hot-recommend-grid{gap:26px;}
}
@media(max-width:991px){
  .custom-nav{padding-top:8px;padding-bottom:8px;}
  .custom-nav .container{--bs-gutter-x:1rem;max-width:100%;}
  .custom-nav .site-logo{margin-right:0;}
  .custom-nav .navbar-collapse{
    background:#fff;margin-top:12px;border-radius:20px;padding:12px;
    box-shadow:var(--shadow-md);border:1px solid #E8EFF8;
  }
  .custom-nav .navbar-nav{padding-top:6px;}
  .custom-nav .navbar-nav .nav-link{
    padding:13px 16px;margin:0;border-radius:12px;white-space:normal;
  }
  .custom-nav .navbar-nav .nav-link::after{display:none;}
  .custom-nav .navbar-nav .nav-link.active{background:var(--primary-soft);}
  .nav-actions{padding:10px 4px 6px;gap:10px;}
  .nav-actions .btn-brand{min-height:42px;height:42px;}
  .up-to-top-btn{display:none;}
  .category-banner{padding:54px 0 52px;}
  .category-banner .banner-grid{grid-template-columns:1fr;}
  .category-banner h1{font-size:36px;}
  .visual-main{max-height:460px;}
  .visual-note{left:-8px;top:-12px;}
  .visual-badge{top:auto;bottom:-12px;right:14px;}
  .tax-pill{padding:9px 15px;}
  .services-block,.compare-section,.faq-section{padding:56px 0;}
  .update-area{padding:56px 0;}
  .update-wrap{grid-template-columns:1fr;gap:38px;}
  .join-card{padding:36px 28px;flex-direction:column;align-items:flex-start;}
  .hot-recommend-grid{grid-template-columns:1fr;}
  .special-pair{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media(max-width:767px){
  .category-banner h1{font-size:30px;}
  .h2-title{font-size:24px;}
  .service-kind-grid{grid-template-columns:1fr;}
  .banner-actions{gap:10px;}
  .btn-brand,.btn-outline-brand{width:100%;}
  .pack-mini{flex-direction:column;align-items:flex-start;padding:22px;}
  .pack-mini .pack-link{white-space:normal;}
  .cal-chip-wrap{gap:8px;}
  .compare-section{padding:44px 0;}
  .compare-wrap{padding:14px;}
  .faq-section{padding:44px 0;}
  .faq-acc .accordion-button{font-size:15px;}
  .join-card h2{font-size:25px;}
  .join-card .join-actions .btn-brand,.join-card .join-actions .btn-outline-brand{width:auto;}
}
@media(max-width:520px){
  body{font-size:15px;}
  .category-banner h1{font-size:27px;line-height:1.55;}
  .banner-points{display:grid;grid-template-columns:1fr;gap:6px;}
  .tax-head{align-items:flex-start;}
  .site-logo .logo-sub{display:none;}
  .hot-row{flex-wrap:wrap;gap:10px;}
  .hot-row .row-action{width:30px;height:30px;}
  .cmp-grid{min-width:700px;}
}

/* roulang page: category3 */
:root {
  --brand-blue: #1B5CFF;
  --brand-blue-deep: #1347D6;
  --brand-blue-soft: #EAF1FF;
  --brand-teal: #21B5A2;
  --bg-body: #F7F9FD;
  --bg-white: #FFFFFF;
  --heading-color: #0D2545;
  --body-color: #344E70;
  --muted-color: #7488A3;
  --border-color: #E1EAF7;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --shadow-sm: 0 8px 24px rgba(33, 72, 132, 0.07);
  --shadow-md: 0 18px 45px rgba(33, 72, 132, 0.10);
  --transition: all .25s ease;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei UI", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg-body);
  color: var(--body-color);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
a:hover { color: inherit; }
button { font-family: inherit; }
ul, ol { margin: 0; padding: 0; }

::selection { background: rgba(27, 92, 255, 0.15); color: #0D2545; }
:focus-visible { outline: 3px solid rgba(27, 92, 255, 0.28); outline-offset: 2px; border-radius: 6px; }

.container { max-width: 1200px; }
h1, h2, h3, h4, h5, h6 { color: var(--heading-color); line-height: 1.35; font-weight: 700; }

.btn { border-radius: var(--radius-sm); transition: var(--transition); }
.btn-lg { padding: 12px 28px; font-size: 16px; border-radius: 12px; }
.btn-brand {
  background: var(--brand-blue);
  color: #fff;
  border: 1px solid var(--brand-blue);
  box-shadow: 0 10px 22px rgba(27, 92, 255, 0.22);
  font-weight: 600;
}
.btn-brand:hover { background: var(--brand-blue-deep); border-color: var(--brand-blue-deep); color: #fff; transform: translateY(-2px); box-shadow: 0 14px 26px rgba(27, 92, 255, 0.26); }
.btn-brand:active { transform: translateY(0); }
.btn-outline-brand {
  background: #fff;
  color: var(--brand-blue);
  border: 1px solid #C6D9FF;
  font-weight: 600;
}
.btn-outline-brand:hover { background: var(--brand-blue-soft); border-color: var(--brand-blue); color: var(--brand-blue-deep); transform: translateY(-2px); }
.btn-white {
  background: #fff;
  color: var(--brand-blue);
  border: 1px solid rgba(255,255,255,.2);
  font-weight: 600;
  box-shadow: 0 10px 22px rgba(8, 38, 105, 0.2);
}
.btn-white:hover { background: #EFF5FF; color: var(--brand-blue-deep); transform: translateY(-2px); }
.btn-outline-white {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255,255,255,.75);
  font-weight: 600;
}
.btn-outline-white:hover { background: rgba(255,255,255,.15); color: #fff; transform: translateY(-2px); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 1050;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(214,226,244,.82);
}
.custom-nav { min-height: 68px; padding-top: 0; padding-bottom: 0; background: transparent; }
.site-logo { display: flex; align-items: center; gap: 0; padding: 12px 0; }
.site-logo .logo-mark {
  width: 40px; height: 40px; border-radius: 12px;
  background: var(--brand-blue);
  color: #fff;
  font-weight: 800;
  font-size: 16px;
  display: flex; align-items: center; justify-content: center;
  margin-right: 10px;
  box-shadow: 0 8px 18px rgba(27, 92, 255, .24);
}
.site-logo .logo-text {
  font-size: 20px;
  font-weight: 800;
  color: var(--heading-color);
  line-height: 1.15;
  letter-spacing: .02em;
}
.site-logo .logo-text small {
  display: block;
  font-size: 9px;
  font-weight: 600;
  color: var(--muted-color);
  letter-spacing: .16em;
  margin-top: 3px;
}
.site-nav { align-items: center; margin-left: 22px; }
.custom-nav .site-nav .nav-link {
  display: inline-flex;
  align-items: center;
  position: relative;
  color: var(--body-color);
  font-weight: 600;
  padding: 23px 14px 21px;
  margin: 0 2px;
}
.custom-nav .site-nav .nav-link::after {
  content: "";
  position: absolute;
  left: 14px; right: 14px; bottom: 14px;
  height: 2px;
  border-radius: 4px;
  background: var(--brand-blue);
  opacity: 0;
  transition: opacity .25s ease, transform .25s ease;
  transform: scaleX(.7);
}
.custom-nav .site-nav .nav-link:hover, .custom-nav .site-nav .nav-link.active { color: var(--brand-blue); }
.custom-nav .site-nav .nav-link:hover::after, .custom-nav .site-nav .nav-link.active::after { opacity: 1; transform: scaleX(1); }
.site-nav .nav-link.active { color: var(--brand-blue); }

.nav-actions { display: flex; align-items: center; gap: 12px; margin-left: 20px; }
.nav-actions .nav-link-soft {
  color: var(--body-color);
  font-weight: 600;
  padding: 8px 12px;
  border-radius: 10px;
  font-size: 14px;
  transition: var(--transition);
}
.nav-actions .nav-link-soft:hover { background: var(--brand-blue-soft); color: var(--brand-blue); }
.nav-actions .nav-link-soft i { margin-right: 6px; color: var(--brand-blue); }
.nav-actions .nav-cta {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 18px;
  font-size: 14px;
  border-radius: 999px;
  white-space: nowrap;
}

.custom-toggler { border: 0; box-shadow: none !important; }
.toggler-inner { display: inline-flex; flex-direction: column; gap: 5px; width: 22px; }
.toggler-inner span { display: block; height: 2px; background: var(--heading-color); border-radius: 4px; transition: transform .25s ease, opacity .25s ease; }
.custom-toggler[aria-expanded="true"] .toggler-inner span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.custom-toggler[aria-expanded="true"] .toggler-inner span:nth-child(2) { opacity: 0; }
.custom-toggler[aria-expanded="true"] .toggler-inner span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.page-hero {
  position: relative;
  overflow: hidden;
  padding: 88px 0 72px;
  background: linear-gradient(180deg, #EDF5FF 0%, #F7FAFF 100%);
}
.page-hero::before {
  content: "";
  position: absolute;
  width: 400px; height: 400px;
  right: -100px; top: -140px;
  border-radius: 50%;
  background: rgba(27,92,255,.05);
}
.page-hero::after {
  content: "";
  position: absolute;
  width: 260px; height: 260px;
  left: 42%; bottom: -160px;
  border-radius: 50%;
  background: rgba(27,92,255,.035);
}
.hero-copy { position: relative; z-index: 2; }
.crumb-nav {
  display: flex; align-items: center; flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: var(--muted-color);
  margin-bottom: 28px;
}
.crumb-nav a { color: var(--body-color); transition: var(--transition); }
.crumb-nav a:hover { color: var(--brand-blue); }
.crumb-nav i { font-size: 11px; color: #A8BBD2; }
.crumb-nav span { color: var(--muted-color); }
.hero-title {
  font-size: clamp(2.2rem, 4vw, 3.05rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--heading-color);
  margin: 0 0 18px;
}
.hero-title .blue-text { color: var(--brand-blue); }
.hero-lead {
  font-size: clamp(16px, 1.2vw, 19px);
  line-height: 1.95;
  color: var(--body-color);
  max-width: 620px;
  margin: 0 0 28px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.hero-trust { display: flex; flex-wrap: wrap; gap: 18px 28px; margin-top: 34px; }
.hero-trust span { font-size: 14px; color: var(--muted-color); display: inline-flex; align-items: center; }
.hero-trust i { color: var(--brand-teal); margin-right: 8px; font-size: 15px; }
.hero-media { position: relative; z-index: 2; }
.hero-media-frame {
  background: rgba(255,255,255,.82);
  padding: 12px;
  border-radius: 32px;
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(255,255,255,.9);
}
.hero-media-frame img { width: 100%; height: 310px; object-fit: cover; border-radius: 24px; }
.hero-note-chip {
  position: absolute;
  right: -8px;
  bottom: 30px;
  background: #fff;
  border-radius: 16px;
  padding: 12px 18px;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--heading-color);
  font-weight: 600;
  max-width: 260px;
}
.hero-note-chip i { color: var(--brand-blue); font-size: 18px; }

.section-block { padding: 104px 0; position: relative; z-index: 1; }
.section-white { background: #fff; }
.section-soft { background: #F5F8FF; }

.steps-section .section-head {
  max-width: 720px;
  margin-bottom: 56px;
}
.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--brand-blue);
  font-weight: 700;
  font-size: 14px;
  margin-bottom: 14px;
  letter-spacing: .02em;
}
.section-kicker::before { content: ""; width: 24px; height: 3px; border-radius: 4px; background: var(--brand-blue); }
.section-title {
  font-size: clamp(1.9rem, 2.8vw, 2.55rem);
  color: var(--heading-color);
  font-weight: 800;
  letter-spacing: -0.015em;
  line-height: 1.3;
  margin: 0 0 16px;
}
.section-head p { color: var(--muted-color); font-size: 17px; line-height: 1.9; margin: 0; max-width: 720px; }

.step-list { list-style: none; margin: 0; padding: 0; }
.step-item {
  position: relative;
  display: flex;
  gap: 20px;
  padding-bottom: 42px;
}
.step-item:last-child { padding-bottom: 0; }
.step-item:not(:last-child)::before {
  content: "";
  position: absolute;
  left: 27px;
  top: 68px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(to bottom, #D6E4FC, #E0EBFF);
}
.step-mark {
  flex: 0 0 56px;
  width: 56px;
  height: 56px;
  border-radius: 18px;
  background: var(--brand-blue-soft);
  color: var(--brand-blue);
  font-size: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 14px rgba(27,92,255,.08);
}
.step-body { padding-top: 2px; }
.step-meta { display: flex; align-items: center; gap: 12px; font-size: 13px; margin-bottom: 8px; }
.step-no { color: var(--brand-blue); font-weight: 700; }
.step-time { color: var(--muted-color); }
.step-body h3 { font-size: 20px; font-weight: 700; margin: 0 0 10px; }
.step-body p { color: var(--body-color); font-size: 16px; line-height: 1.9; margin: 0; max-width: 620px; }

.prep-card {
  background: linear-gradient(145deg, #FFFFFF, #F3F8FF);
  border: 1px solid #E1ECFA;
  border-radius: 28px;
  padding: 32px;
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 110px;
}
.prep-card-title {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 24px;
  color: var(--heading-color);
}
.prep-card-title i { color: var(--brand-blue); }
.prep-list { list-style: none; padding: 0; margin: 0 0 28px; }
.prep-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px dashed #D8E6F7;
}
.prep-list li:last-child { border-bottom: 0; }
.prep-list .prep-icon {
  flex: 0 0 40px;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: #fff;
  color: var(--brand-blue);
  box-shadow: var(--shadow-sm);
  font-size: 17px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.prep-list strong { font-size: 16px; color: var(--heading-color); display: block; margin-bottom: 2px; }
.prep-list p { font-size: 14px; color: var(--muted-color); margin: 0; line-height: 1.7; }
.prep-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--brand-blue);
  font-weight: 600;
  font-size: 15px;
}
.prep-link:hover { color: var(--brand-blue-deep); }
.prep-link i { transition: transform .25s ease; }
.prep-link:hover i { transform: translateX(4px); }

.scenarios-section { background: var(--bg-white); }
.scenarios-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 48px;
}
.scenarios-head .section-title { margin-bottom: 10px; }
.scenarios-head p { color: var(--muted-color); margin: 0; max-width: 560px; }
.scenario-card {
  background: #F5F8FF;
  border: 1px solid transparent;
  border-radius: 24px;
  height: 100%;
  padding: 30px 30px 32px;
  transition: var(--transition);
  position: relative;
}
.scenario-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: #fff; background: #fff; }
.scenario-num {
  width: 48px; height: 48px;
  border-radius: 16px;
  background: var(--brand-blue);
  color: #fff;
  font-weight: 800;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  box-shadow: 0 8px 20px rgba(27,92,255,.2);
}
.scenario-card:nth-child(2) .scenario-num { background: var(--brand-teal); }
.scenario-card h3 { font-size: 19px; font-weight: 700; margin: 0 0 12px; }
.scenario-card p { color: var(--body-color); font-size: 15px; line-height: 1.85; margin: 0; }
.scene-guide {
  margin-top: 44px;
  background: var(--brand-blue-soft);
  border-radius: 20px;
  padding: 22px 28px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 16px;
  color: var(--body-color);
}
.scene-guide i { color: var(--brand-blue); font-size: 22px; }
.scene-guide a { margin-left: auto; color: var(--brand-blue); font-weight: 700; }
.scene-guide a:hover { color: var(--brand-blue-deep); text-decoration: underline; text-underline-offset: 4px; }

.faq-section { background: #F5F8FF; }
.faq-intro { max-width: 360px; }
.faq-intro h2 { margin-bottom: 14px; }
.faq-intro p { color: var(--muted-color); }
.faq-note {
  margin-top: 26px;
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 22px;
  padding: 25px;
}
.faq-note h3 { font-size: 18px; margin-bottom: 10px; }
.faq-note p { font-size: 14px; color: var(--muted-color); margin-bottom: 18px; }
.faq-note .btn { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 8px; margin-right: 8px; padding: 8px 16px; font-size: 14px; }
.faq-accordion { border-radius: 24px; }
.faq-item {
  background: #fff;
  border: 1px solid #E1EAF7;
  border-radius: 18px;
  margin-bottom: 14px;
  overflow: hidden;
  transition: box-shadow .25s ease;
}
.faq-item:hover { box-shadow: var(--shadow-sm); }
.faq-q {
  width: 100%;
  background: transparent;
  border: 0;
  text-align: left;
  padding: 22px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  font-size: 16px;
  font-weight: 700;
  color: var(--heading-color);
}
.faq-q .faq-icon {
  flex: 0 0 32px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--brand-blue-soft);
  color: var(--brand-blue);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  transition: transform .25s ease, background .25s ease;
}
.faq-q[aria-expanded="true"] .faq-icon { background: var(--brand-blue); color: #fff; transform: rotate(45deg); }
.faq-a { padding: 0 24px 22px; }
.faq-a p { color: var(--body-color); font-size: 15px; line-height: 1.85; margin: 0; }

.join-area { padding: 100px 0; }
.join-banner {
  position: relative;
  overflow: hidden;
  background: var(--brand-blue);
  border-radius: 32px;
  padding: 60px 64px;
  box-shadow: 0 28px 60px rgba(27,92,255,.26);
}
.join-banner::before {
  content: "";
  position: absolute;
  width: 240px;
  height: 240px;
  right: -70px;
  bottom: -90px;
  border-radius: 50%;
  background: rgba(255,255,255,.09);
}
.join-banner::after {
  content: "";
  position: absolute;
  width: 120px;
  height: 120px;
  left: 38%;
  top: -50px;
  border-radius: 50%;
  background: rgba(255,255,255,.06);
}
.join-banner h2 { color: #fff; font-size: clamp(1.8rem, 3vw, 2.5rem); font-weight: 800; margin: 0 0 16px; position: relative; z-index: 1; }
.join-banner p { color: rgba(255,255,255,.88); font-size: 16px; max-width: 720px; margin: 0; position: relative; z-index: 1; }
.join-banner .join-actions { position: relative; z-index: 1; text-align: right; }
.join-banner .btn { margin: 6px 0 6px 12px; }

.site-footer { background: #fff; border-top: 1px solid var(--border-color); color: var(--body-color); }
.site-footer .container { padding-top: 64px; }
.footer-brand-name { display: flex; align-items: center; font-size: 22px; font-weight: 800; color: var(--heading-color); }
.footer-brand-name .logo-mark {
  width: 38px; height: 38px;
  border-radius: 12px;
  background: var(--brand-blue);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 15px;
  margin-right: 10px;
}
.footer-how { font-weight: 600; font-size: 11px; letter-spacing: .18em; color: var(--muted-color); margin-top: 12px; margin-bottom: 12px; }
.footer-desc { color: var(--muted-color); font-size: 14px; line-height: 1.85; max-width: 340px; margin: 0; }
.footer-title { font-size: 16px; font-weight: 700; margin: 0 0 20px; color: var(--heading-color); }
.footer-link-list { list-style: none; padding: 0; margin: 0; }
.footer-link-list li { margin-bottom: 12px; }
.footer-link-list a { color: var(--body-color); font-size: 15px; transition: var(--transition); }
.footer-link-list a:hover { color: var(--brand-blue); padding-left: 5px; }
.footer-info-row { display: flex; gap: 12px; margin-bottom: 15px; font-size: 14px; color: var(--muted-color); line-height: 1.7; }
.footer-info-row i { color: var(--brand-blue); margin-top: 4px; font-size: 16px; flex: 0 0 auto; }
.footer-bottom {
  border-top: 1px solid #E5EDF7;
  margin-top: 48px;
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px 20px;
  font-size: 14px;
  color: var(--muted-color);
}
.backtop-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--brand-blue-soft);
  border: 0;
  color: var(--brand-blue);
  font-weight: 600;
  padding: 9px 18px;
  border-radius: 999px;
  font-size: 14px;
  transition: var(--transition);
}
.backtop-btn:hover { background: var(--brand-blue); color: #fff; transform: translateY(-2px); }

@media (max-width: 991.98px) {
  .custom-nav .site-nav .nav-link { padding: 12px 12px; }
  .custom-nav .site-nav .nav-link::after { display: none; }
  .site-nav { margin-left: 0; }
  .navbar-collapse { background: #fff; border-top: 1px solid var(--border-color); padding: 16px 8px 24px; margin-top: 6px; border-radius: 0 0 20px 20px; box-shadow: 0 18px 30px rgba(33,72,132,.08); }
  .site-nav .nav-link:hover { background: var(--brand-blue-soft); border-radius: 12px; }
  .nav-actions { margin: 16px 4px 0; padding-top: 16px; border-top: 1px dashed #DCE6F3; }
  .page-hero { padding: 68px 0 56px; }
  .hero-media-frame img { height: 260px; }
  .hero-note-chip { right: -2px; bottom: 20px; max-width: 220px; padding: 10px 14px; }
  .section-block { padding: 72px 0; }
  .prep-card { position: static; }
  .join-banner { padding: 40px 32px; border-radius: 24px; }
  .join-banner .join-actions { text-align: left; margin-top: 18px; }
  .join-banner .btn { margin-left: 0; margin-right: 12px; }
  .site-footer .container { padding-top: 48px; }
}

@media (max-width: 767.98px) {
  body { font-size: 15px; }
  .site-logo .logo-text { font-size: 18px; }
  .page-hero { padding: 48px 0 42px; }
  .hero-title { font-size: 30px; }
  .hero-actions .btn { width: 100%; justify-content: center; margin-bottom: 4px; }
  .hero-trust { gap: 10px 18px; }
  .section-title { font-size: 26px; }
  .scenarios-head { flex-direction: column; gap: 12px; }
  .scene-guide a { margin-left: 0; }
  .faq-q { font-size: 15px; padding: 18px 18px; }
  .faq-a { padding: 0 18px 18px; }
  .join-area { padding: 64px 0; }
  .join-banner { padding: 32px 24px; }
  .join-banner .btn { width: 100%; margin: 8px 0; }
}

@media (max-width: 575.98px) {
  .hero-actions .btn-lg { font-size: 15px; padding: 11px 18px; }
  .hero-media-frame img { height: 220px; }
  .step-item { gap: 14px; }
  .step-mark { flex: 0 0 48px; width: 48px; height: 48px; font-size: 18px; border-radius: 15px; }
  .step-item:not(:last-child)::before { left: 23px; }
  .footer-bottom { flex-direction: column; text-align: center; justify-content: center; }
  .scenario-card { padding: 24px 22px; }
}