/* roulang page: index */
:root {
  --brand-primary: #1B6DA8;
  --brand-primary-dark: #145A8C;
  --brand-secondary: #2C7FB8;
  --accent: #E8872A;
  --accent-light: #F59F3E;
  --teal: #4FA8A0;
  --color-deep: #122A3C;
  --color-deep-2: #1A3A4F;
  --bg-page: #F4F7F9;
  --bg-card: #FFFFFF;
  --text-primary: #22303E;
  --text-secondary: #5A6B7C;
  --line-color: #E2E8F0;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --shadow-xs: 0 1px 2px rgba(15, 35, 55, .06);
  --shadow-sm: 0 4px 12px rgba(15, 35, 55, .07);
  --shadow-md: 0 8px 24px rgba(15, 35, 55, .09);
  --shadow-lg: 0 16px 40px rgba(15, 35, 55, .12);
  --container-max: 1280px;
  --gutter-x: 1.5rem;
  --font-stack: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
}

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

html { scroll-behavior: smooth; }

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

a { color: var(--brand-primary); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--brand-primary-dark); text-decoration: none; }

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

.container { max-width: var(--container-max); padding-left: 1.25rem; padding-right: 1.25rem; }
@media (min-width: 1400px) { .container { max-width: var(--container-max); } }

h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; color: var(--text-primary); }

.btn { border-radius: var(--radius-sm); font-weight: 600; padding: .6rem 1.4rem; transition: all .25s ease; border: 0; }
.btn:focus, .btn:focus-visible { outline: 2px solid var(--brand-primary); outline-offset: 2px; box-shadow: 0 0 0 4px rgba(27,109,168,.15); }

.btn-primary { background: var(--brand-primary); color: #fff; box-shadow: var(--shadow-xs); }
.btn-primary:hover { background: var(--brand-primary-dark); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-primary:active { transform: translateY(0); box-shadow: var(--shadow-xs); }

.btn-outline-primary { background: transparent; color: var(--brand-primary); border: 1.5px solid var(--brand-primary); }
.btn-outline-primary:hover { background: var(--brand-primary); color: #fff; border-color: var(--brand-primary); transform: translateY(-2px); box-shadow: var(--shadow-md); }

.btn-accent { background: var(--accent); color: #fff; box-shadow: var(--shadow-xs); }
.btn-accent:hover { background: var(--accent-light); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-accent:active { transform: translateY(0); box-shadow: var(--shadow-xs); }

.btn-light { background: #fff; color: var(--color-deep); }
.btn-light:hover { background: #f0f4f8; color: var(--color-deep); transform: translateY(-2px); box-shadow: var(--shadow-md); }

.form-control { border-radius: var(--radius-sm); padding: .6rem 1rem; background: #F2F5F8; border: 1px solid transparent; transition: all .2s ease; }
.form-control:focus { background: #fff; border-color: var(--brand-primary); box-shadow: 0 0 0 4px rgba(27,109,168,.12); }

/* ===== Header / 卡片化导航面板 ===== */
.site-header {
  position: relative;
  z-index: 50;
  padding-top: 1rem;
}
.nav-panel {
  background: var(--color-deep);
  border-radius: var(--radius-lg);
  padding: .85rem 1.25rem;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: nowrap;
}
.brand-logo {
  color: #fff;
  font-size: 1.2rem;
  font-weight: 700;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: .4rem;
  letter-spacing: .02em;
}
.brand-logo i { color: var(--accent); font-size: 1.3rem; }
.brand-logo:hover { color: var(--accent-light); }

.nav-links {
  display: flex;
  gap: .4rem;
  flex: 1;
  justify-content: center;
}
.nav-link-item {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: .55rem 1rem;
  border-radius: var(--radius-md);
  color: rgba(255,255,255,.8);
  font-size: .9rem;
  font-weight: 500;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.04);
  transition: all .2s ease;
}
.nav-link-item i { font-size: 1rem; }
.nav-link-item:hover {
  background: rgba(255,255,255,.12);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}
.nav-link-item.active {
  background: rgba(27,109,168,.45);
  color: #fff;
  border-color: rgba(27,109,168,.3);
  box-shadow: 0 4px 12px rgba(0,0,0,.15);
}
.nav-cta {
  flex-shrink: 0;
}

.navbar-toggler.custom-toggler {
  border: 1px solid rgba(255,255,255,.2);
  color: rgba(255,255,255,.8);
  border-radius: var(--radius-sm);
  padding: .4rem .6rem;
  background: transparent;
  display: none;
}
.navbar-toggler.custom-toggler:focus { box-shadow: 0 0 0 3px rgba(255,255,255,.15); }

.mobile-nav { display: none; }

/* ===== Hero ===== */
.hero-section {
  position: relative;
  padding: 4rem 0 0;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: var(--bg-page);
  z-index: 0;
}
.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .35;
  filter: saturate(.85);
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(244,247,249,.92) 20%, rgba(244,247,249,.55) 50%, rgba(244,247,249,.35) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  padding: 3rem 0 5.5rem;
}
.hero-left { padding-right: 2rem; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  background: rgba(27,109,168,.1);
  color: var(--brand-primary);
  border-radius: 50px;
  padding: .35rem .9rem;
  font-size: .8rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
  letter-spacing: .04em;
}
.hero-badge::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
}
.hero-title {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 1.25rem;
  letter-spacing: -.01em;
}
.hero-title .highlight { color: var(--brand-primary); }
.hero-title .accent-text { color: var(--accent); }
.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: 2rem;
  max-width: 36rem;
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

.hero-card-side {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 0;
  overflow: hidden;
  border: 1px solid var(--line-color);
}
.hero-card-side .card-img-top {
  height: 180px;
  object-fit: cover;
  width: 100%;
}
.hero-card-body { padding: 1.5rem; }
.hero-card-stats {
  display: flex;
  justify-content: space-between;
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line-color);
}
.stat-item { text-align: center; flex: 1; }
.stat-item .num { font-size: 1.6rem; font-weight: 700; color: var(--brand-primary); font-variant-numeric: tabular-nums; }
.stat-item .label { font-size: .75rem; color: var(--text-secondary); }
.hero-card-list { list-style: none; margin: 0; padding: 0; }
.hero-card-list li { padding: .4rem 0; font-size: .9rem; color: var(--text-secondary); display: flex; align-items: center; gap: .5rem; }
.hero-card-list li i { color: var(--teal); }

/* ===== 倒计时条 ===== */
.countdown-bar {
  background: var(--color-deep);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.75rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin: 0 0 0;
  position: relative;
  z-index: 3;
  transform: translateY(50%);
  margin-top: -2.5rem;
  box-shadow: var(--shadow-lg);
}
.countdown-label-wrap { flex-shrink: 0; }
.countdown-label { color: #fff; font-weight: 700; font-size: 1.05rem; margin-bottom: .2rem; }
.countdown-sub { color: rgba(255,255,255,.6); font-size: .8rem; }
.countdown-timer { display: flex; gap: .75rem; flex: 1; justify-content: center; }
.countdown-item {
  background: rgba(255,255,255,.08);
  border-radius: var(--radius-md);
  padding: .6rem 1rem;
  text-align: center;
  min-width: 72px;
  border: 1px solid rgba(255,255,255,.06);
}
.countdown-item .num { font-size: 1.75rem; font-weight: 700; color: var(--accent); font-variant-numeric: tabular-nums; line-height: 1.2; }
.countdown-item .label { font-size: .75rem; color: rgba(255,255,255,.7); letter-spacing: .08em; }
.countdown-cta { flex-shrink: 0; }

/* ===== 板块通用 ===== */
.section-padding { padding: clamp(3.5rem, 7vw, 5.5rem) 0; }
.section-heading { margin-bottom: 2.5rem; }
.section-heading .tag { display: inline-block; font-size: .8rem; font-weight: 600; color: var(--brand-primary); background: rgba(27,109,168,.08); padding: .3rem .9rem; border-radius: 50px; margin-bottom: .8rem; letter-spacing: .05em; }
.section-heading h2 { font-size: clamp(1.6rem, 2.6vw, 2.2rem); font-weight: 700; margin-bottom: .8rem; }
.section-heading p { color: var(--text-secondary); max-width: 600px; font-size: 1rem; line-height: 1.8; }

/* ===== 卖点卡片 ===== */
.feature-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: 1.75rem 1.5rem;
  height: 100%;
  transition: all .25s ease;
  border: 1px solid transparent;
  min-height: 100%;
}
.feature-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  border-color: var(--line-color);
}
.feature-card .icon-block {
  width: 56px; height: 56px;
  border-radius: var(--radius-md);
  background: rgba(27,109,168,.1);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  color: var(--brand-primary);
  margin-bottom: 1.1rem;
  transition: all .25s ease;
}
.feature-card:hover .icon-block { background: var(--accent); color: #fff; }
.feature-card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: .5rem; }
.feature-card p { color: var(--text-secondary); font-size: .9rem; line-height: 1.7; margin-bottom: 0; }
.feature-card .card-num { font-size: 2.2rem; font-weight: 800; color: rgba(27,109,168,.12); line-height: 1; margin-bottom: .75rem; }
.feature-card.feature-featured {
  background: linear-gradient(140deg, #ffffff 0%, #f0f7fb 100%);
  border-top: 3px solid var(--brand-primary);
}

/* ===== 图墙 ===== */
.gallery-wrap { margin-top: 2rem; }
.gallery-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  position: relative;
  box-shadow: var(--shadow-sm);
  transition: all .25s ease;
  height: 100%;
  background: var(--bg-card);
}
.gallery-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.gallery-card .img-wrap { position: relative; overflow: hidden; aspect-ratio: 16/10; }
.gallery-card .img-wrap img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s ease; }
.gallery-card:hover .img-wrap img { transform: scale(1.04); }
.gallery-card .img-wrap::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(18,42,60,.28) 100%);
  pointer-events: none;
}
.gallery-card .card-badge {
  position: absolute; top: .85rem; left: .85rem;
  background: rgba(255,255,255,.92);
  color: var(--brand-primary);
  font-size: .75rem;
  font-weight: 600;
  padding: .25rem .7rem;
  border-radius: 50px;
  z-index: 2;
  backdrop-filter: blur(4px);
}
.gallery-card .card-body { padding: 1rem 1.1rem 1.25rem; }
.gallery-card .card-body h5 { font-size: 1rem; font-weight: 600; margin-bottom: .35rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.gallery-card .card-body p { font-size: .8rem; color: var(--text-secondary); margin-bottom: 0; line-height: 1.6; }

/* ===== CTA 区 ===== */
.cta-section {
  background: var(--bg-card);
  padding: 0;
}
.cta-card {
  background: linear-gradient(140deg, var(--color-deep) 0%, var(--color-deep-2) 100%);
  border-radius: var(--radius-lg);
  padding: 3rem 3rem;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.cta-card::before {
  content: '';
  position: absolute;
  top: -40px; right: -40px;
  width: 200px; height: 200px;
  border-radius: 50%;
  background: rgba(245,159,62,.12);
}
.cta-card::after {
  content: '';
  position: absolute;
  bottom: -60px; left: 30%;
  width: 160px; height: 160px;
  border-radius: 50%;
  background: rgba(27,109,168,.15);
}
.cta-card h2 { color: #fff; font-size: clamp(1.5rem, 2.4vw, 2rem); font-weight: 700; margin-bottom: .8rem; position: relative; z-index: 1; }
.cta-card p { color: rgba(255,255,255,.7); max-width: 480px; margin-bottom: 1.75rem; position: relative; z-index: 1; }
.cta-actions { display: flex; gap: 1rem; position: relative; z-index: 1; flex-wrap: wrap; }
.cta-form-row { display: flex; gap: .5rem; max-width: 460px; position: relative; z-index: 1; }
.cta-form-row .form-control { background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.15); color: #fff; border-radius: var(--radius-md); }
.cta-form-row .form-control::placeholder { color: rgba(255,255,255,.5); }
.cta-form-row .form-control:focus { background: rgba(255,255,255,.18); border-color: var(--accent); box-shadow: 0 0 0 4px rgba(245,159,62,.15); }

/* ===== FAQ ===== */
.faq-section { background: var(--bg-page); }
.faq-left .faq-intro { background: var(--bg-card); border-radius: var(--radius-md); padding: 1.75rem; box-shadow: var(--shadow-sm); margin-bottom: 1.5rem; border-left: 4px solid var(--accent); }
.faq-left .faq-intro h3 { font-size: 1.1rem; margin-bottom: .6rem; }
.faq-left .faq-intro p { color: var(--text-secondary); font-size: .9rem; margin-bottom: 0; }
.faq-tip { background: rgba(79,168,160,.08); border-radius: var(--radius-md); padding: 1.25rem 1.5rem; display: flex; gap: 1rem; align-items: flex-start; }
.faq-tip i { font-size: 1.5rem; color: var(--teal); flex-shrink: 0; }
.faq-tip div { color: var(--text-secondary); font-size: .85rem; line-height: 1.7; }

.accordion-item {
  background: var(--bg-card);
  border: 1px solid var(--line-color);
  border-radius: var(--radius-md) !important;
  margin-bottom: .75rem;
  overflow: hidden;
}
.accordion-item:first-of-type, .accordion-item:last-of-type { border-radius: var(--radius-md) !important; }
.accordion-button {
  background: transparent;
  color: var(--text-primary);
  font-weight: 600;
  font-size: .95rem;
  padding: 1.1rem 1.4rem;
  box-shadow: none;
}
.accordion-button:not(.collapsed) { background: #EDF4F9; color: var(--brand-primary); }
.accordion-button:focus { box-shadow: none; outline: 2px solid rgba(27,109,168,.2); }
.accordion-button::after {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%231B6DA8' class='bi bi-plus-lg' viewBox='0 0 16 16'%3E%3Cpath fill-rule='evenodd' d='M8 2a.5.5 0 0 1 .5.5v5h5a.5.5 0 0 1 0 1h-5v5a.5.5 0 0 1-1 0v-5h-5a.5.5 0 0 1 0-1h5v-5A.5.5 0 0 1 8 2'/%3E%3C/svg%3E");
  transition: transform .2s ease;
}
.accordion-button:not(.collapsed)::after {
  transform: rotate(45deg);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23E8872A' class='bi bi-plus-lg' viewBox='0 0 16 16'%3E%3Cpath fill-rule='evenodd' d='M8 2a.5.5 0 0 1 .5.5v5h5a.5.5 0 0 1 0 1h-5v5a.5.5 0 0 1-1 0v-5h-5a.5.5 0 0 1 0-1h5v-5A.5.5 0 0 1 8 2'/%3E%3C/svg%3E");
}
.accordion-body { padding: 1rem 1.4rem 1.25rem; color: var(--text-secondary); font-size: .9rem; line-height: 1.8; }
.accordion-body ul { padding-left: 1.2rem; margin-bottom: 0; }
.accordion-body li { margin-bottom: .3rem; }

/* ===== 最新动态 ===== */
.news-section { background: var(--bg-card); }
.news-list { margin-top: 1.5rem; }
.news-card-item {
  display: flex;
  gap: 1.25rem;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  box-shadow: var(--shadow-xs);
  border: 1px solid var(--line-color);
  transition: all .25s ease;
  margin-bottom: 1rem;
}
.news-card-item:hover { box-shadow: var(--shadow-sm); transform: translateX(4px); }
.news-thumb {
  width: 110px; height: 92px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
}
.news-thumb img { width: 100%; height: 100%; object-fit: cover; }
.news-content { flex: 1; min-width: 0; }
.news-meta { display: flex; align-items: center; gap: .75rem; margin-bottom: .4rem; }
.news-badge {
  background: rgba(27,109,168,.1);
  color: var(--brand-primary);
  font-size: .7rem;
  font-weight: 600;
  padding: .2rem .6rem;
  border-radius: 50px;
  white-space: nowrap;
}
.news-date { font-size: .75rem; color: var(--text-secondary); }
.news-content h3 { font-size: .95rem; font-weight: 600; margin-bottom: .35rem; line-height: 1.5; }
.news-content h3 a { color: var(--text-primary); }
.news-content h3 a:hover { color: var(--brand-primary); }
.news-content p {
  font-size: .82rem;
  color: var(--text-secondary);
  margin-bottom: .4rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.6;
}
.news-detail { font-size: .78rem; color: var(--brand-primary); font-weight: 500; }

.news-empty {
  text-align: center;
  padding: 3rem 1.5rem;
  border: 1px dashed var(--line-color);
  border-radius: var(--radius-md);
  background: #FAFBFD;
}
.news-empty i { font-size: 2.4rem; color: #C4CED9; display: block; margin-bottom: .8rem; }
.news-empty span { color: var(--text-secondary); font-size: .9rem; }

/* ===== 页脚 ===== */
.site-footer {
  background: var(--color-deep);
  color: rgba(255,255,255,.8);
  padding: 3.5rem 0 0;
}
.footer-top { padding-bottom: 2.5rem; border-bottom: 1px solid rgba(255,255,255,.06); }
.footer-brand .brand-logo { margin-bottom: .8rem; }
.footer-brand p { font-size: .85rem; color: rgba(255,255,255,.6); line-height: 1.7; max-width: 320px; }
.footer-title { font-size: .95rem; font-weight: 600; color: #fff; margin-bottom: 1rem; }
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin-bottom: .5rem; }
.footer-links a { color: rgba(255,255,255,.6); font-size: .85rem; transition: all .2s ease; }
.footer-links a:hover { color: var(--accent); padding-left: 4px; }
.footer-contact p { font-size: .85rem; color: rgba(255,255,255,.6); margin-bottom: .4rem; display: flex; align-items: center; gap: .5rem; }
.footer-contact i { color: var(--accent); }
.footer-bottom {
  padding: 1.25rem 0;
  font-size: .8rem;
  color: rgba(255,255,255,.45);
  text-align: center;
}

/* ===== 响应式 ===== */
@media (max-width: 1199.98px) {
  .nav-links { gap: .3rem; }
  .nav-link-item { padding: .5rem .8rem; font-size: .85rem; }
}

@media (max-width: 991.98px) {
  .nav-links { display: none; }
  .navbar-toggler.custom-toggler { display: inline-block; }
  .nav-panel { flex-wrap: wrap; }
  .mobile-nav.show { display: flex; flex-direction: column; width: 100%; gap: .4rem; padding-top: .75rem; }
  .mobile-nav .nav-link-item { width: 100%; }
  .hero-left { padding-right: 0; margin-bottom: 2rem; }
  .hero-content { padding: 2rem 0 5rem; }
  .countdown-bar { flex-wrap: wrap; justify-content: center; gap: 1rem; }
  .countdown-timer { width: 100%; justify-content: center; }
  .countdown-cta { width: 100%; text-align: center; }
  .countdown-cta .btn { width: 100%; }
  .cta-card { padding: 2.25rem 1.5rem; }
}

@media (max-width: 767.98px) {
  .hero-title { font-size: 1.75rem; }
  .hero-subtitle { font-size: 1rem; }
  .countdown-item { min-width: 58px; padding: .5rem .6rem; }
  .countdown-item .num { font-size: 1.4rem; }
  .countdown-label { font-size: .9rem; }
  .section-padding { padding: 3rem 0; }
  .gallery-card .img-wrap { aspect-ratio: 4/3; }
  .cta-form-row { flex-direction: column; }
  .cta-form-row .btn { width: 100%; }
}

@media (max-width: 575.98px) {
  .container { padding-left: 1rem; padding-right: 1rem; }
  .brand-logo { font-size: 1rem; }
  .nav-panel { padding: .75rem; }
  .countdown-bar { padding: 1rem; }
  .countdown-item { min-width: 48px; }
  .countdown-item .num { font-size: 1.15rem; }
  .countdown-item .label { font-size: .65rem; }
  .countdown-sub { display: none; }
  .news-card-item { flex-direction: row; padding: .9rem; gap: .8rem; }
  .news-thumb { width: 80px; height: 70px; }
  .hero-actions .btn { width: 100%; }
}

/* roulang page: article */
:root{
  --brand-primary:#1B6DA8;
  --brand-primary-dark:#145A8A;
  --brand-secondary:#4FA8A0;
  --accent:#E8872A;
  --accent-light:#F59F3E;
  --deep-bg:#122A3C;
  --deep-bg-light:#1A3A4F;
  --bg-page:#F6F8FA;
  --bg-card:#FFFFFF;
  --bg-soft:#EDF4F9;
  --text-primary:#22303E;
  --text-secondary:#5A6B7C;
  --line-color:#E2E8F0;
  --radius-sm:6px;
  --radius-md:12px;
  --radius-lg:18px;
  --shadow-xs:0 1px 2px rgba(15,35,55,.06);
  --shadow-sm:0 4px 12px rgba(15,35,55,.07);
  --shadow-md:0 8px 24px rgba(15,35,55,.09);
  --shadow-lg:0 16px 40px rgba(15,35,55,.12);
  --container-max:1280px;
  --font-sans:system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",sans-serif;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font-sans);background:var(--bg-page);color:var(--text-primary);font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto}
a{color:var(--brand-primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-primary-dark)}
ul,ol{padding-left:1.25rem}
.container{max-width:var(--container-max)}
.btn{border-radius:var(--radius-sm);font-weight:600;padding:.6rem 1.4rem;transition:all .2s ease;border:none}
.btn-primary{background:var(--brand-primary);color:#fff;box-shadow:var(--shadow-xs)}
.btn-primary:hover{background:var(--brand-primary-dark);color:#fff;box-shadow:var(--shadow-md);transform:translateY(-2px)}
.btn-primary:focus,.btn-outline-primary:focus,.btn-accent:focus{outline:2px solid var(--brand-primary);outline-offset:3px;box-shadow:0 0 0 4px rgba(27,109,168,.15)}
.btn-outline-primary{background:transparent;border:1.5px solid var(--brand-primary);color:var(--brand-primary)}
.btn-outline-primary:hover{background:var(--brand-primary);color:#fff;border-color:var(--brand-primary);box-shadow:var(--shadow-sm)}
.btn-accent{background:var(--accent);color:#fff;border-radius:var(--radius-sm);font-weight:600;box-shadow:var(--shadow-xs)}
.btn-accent:hover{background:var(--accent-light);color:#fff;box-shadow:var(--shadow-md);transform:translateY(-2px)}
.site-header{padding-top:1rem;position:sticky;top:0;z-index:1000;background:rgba(246,248,250,.86);backdrop-filter:blur(10px);transition:box-shadow .25s ease}
.nav-panel{display:flex;align-items:center;gap:1.25rem;background:var(--bg-card);border-radius:var(--radius-lg);padding:.75rem 1.25rem;box-shadow:var(--shadow-sm);border:1px solid rgba(255,255,255,.7)}
.brand-logo{display:flex;align-items:center;gap:.5rem;font-weight:700;font-size:1.18rem;color:var(--text-primary);text-decoration:none;white-space:nowrap}
.brand-logo i{color:var(--accent);font-size:1.6rem}
.brand-logo span{letter-spacing:.01em}
.brand-logo:hover{color:var(--text-primary)}
.nav-links{display:flex;gap:.25rem;margin-left:.5rem;flex:1;flex-wrap:wrap}
.nav-link-item{display:flex;align-items:center;gap:.4rem;padding:.45rem .9rem;border-radius:var(--radius-md);color:var(--text-secondary);text-decoration:none;font-weight:500;font-size:.92rem;transition:background .2s ease,color .2s ease,box-shadow .2s ease;white-space:nowrap}
.nav-link-item:hover{background:var(--bg-soft);color:var(--brand-primary);text-decoration:none}
.nav-link-item.active{background:var(--bg-soft);color:var(--brand-primary);font-weight:600;box-shadow:inset 0 0 0 1px rgba(27,109,168,.16)}
.nav-cta{display:flex;align-items:center;gap:.5rem}
.nav-cta .btn-accent{padding:.5rem 1.2rem}
.custom-toggler{display:none;border:none;background:transparent;font-size:1.6rem;color:var(--text-primary);padding:.25rem .6rem;border-radius:var(--radius-sm);transition:background .2s ease}
.custom-toggler:hover{background:var(--bg-soft)}
.mobile-nav{display:none}
.page-banner{position:relative;padding:4rem 0 2.8rem;background:linear-gradient(135deg,#EDF5FA 0%,#F8FAFC 55%,#E9F1F8 100%);overflow:hidden}
.page-banner::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-2.png') no-repeat center/cover;opacity:.14;pointer-events:none}
.page-banner .container{position:relative;z-index:1}
.breadcrumb-bar{display:flex;align-items:center;gap:.4rem;background:rgba(255,255,255,.75);border-radius:50px;padding:.45rem 1.1rem;box-shadow:var(--shadow-xs);font-size:.875rem;color:var(--text-secondary);width:fit-content;margin-bottom:1.5rem}
.breadcrumb-bar a{color:var(--text-secondary);font-weight:500}
.breadcrumb-bar a:hover{color:var(--brand-primary)}
.breadcrumb-bar .sep{color:#B0C0CE}
.breadcrumb-bar .current{color:var(--text-primary);font-weight:600;max-width:320px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.banner-title{font-size:clamp(1.9rem,3.8vw,2.8rem);font-weight:700;line-height:1.25;margin:0;color:var(--text-primary);letter-spacing:-.01em}
.banner-sub{margin-top:.75rem;font-size:1.05rem;color:var(--text-secondary);max-width:680px}
.article-section{padding:3rem 0 4.5rem}
.article-card{background:var(--bg-card);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:2.8rem 3rem;max-width:880px;margin:0 auto;border:1px solid rgba(255,255,255,.6)}
.article-card:hover{box-shadow:var(--shadow-md)}
.article-header h1{font-size:clamp(1.7rem,3.2vw,2.4rem);font-weight:700;line-height:1.35;margin:0 0 1.1rem;color:var(--text-primary);letter-spacing:-.01em}
.article-meta{display:flex;flex-wrap:wrap;gap:.75rem;align-items:center;color:var(--text-secondary);font-size:.875rem;padding-bottom:1.6rem;border-bottom:1px solid var(--line-color);margin-bottom:2rem}
.badge-category{display:inline-flex;align-items:center;gap:.35rem;background:var(--bg-soft);color:var(--brand-primary);padding:.3rem .9rem;border-radius:50px;font-weight:600;font-size:.8rem}
.meta-item{display:inline-flex;align-items:center;gap:.35rem}
.article-content{line-height:1.9;color:var(--text-primary);font-size:1.05rem;word-wrap:break-word}
.article-content h2{font-size:1.55rem;font-weight:700;margin:2.5rem 0 1rem;padding-bottom:.5rem;border-bottom:1px solid var(--line-color);color:var(--text-primary)}
.article-content h3{font-size:1.3rem;font-weight:700;margin:2rem 0 .8rem;color:var(--text-primary)}
.article-content h4{font-size:1.1rem;font-weight:700;margin:1.5rem 0 .6rem;color:var(--text-primary)}
.article-content p{margin-bottom:1.5rem}
.article-content img{border-radius:var(--radius-md);max-width:100%;height:auto;margin:1.5rem 0;box-shadow:var(--shadow-sm)}
.article-content blockquote{border-left:4px solid var(--brand-primary);background:var(--bg-soft);padding:1rem 1.5rem;border-radius:0 var(--radius-md) var(--radius-md) 0;margin:1.5rem 0;color:var(--text-secondary)}
.article-content ul,.article-content ol{margin-bottom:1.5rem}
.article-content li{margin-bottom:.4rem}
.article-content a{color:var(--brand-primary);font-weight:500}
.article-content a:hover{text-decoration:underline}
.article-content table{width:100%;border-collapse:collapse;margin:1.5rem 0;font-size:.95rem}
.article-content th,.article-content td{border:1px solid var(--line-color);padding:.65rem .85rem;text-align:left}
.article-content th{background:var(--bg-soft);font-weight:600}
.article-content code{background:#F0F3F7;padding:.15rem .45rem;border-radius:4px;font-size:.9em}
.article-content pre{background:var(--deep-bg);color:#E8F0F7;padding:1.25rem 1.5rem;border-radius:var(--radius-md);overflow-x:auto;margin:1.5rem 0;line-height:1.6}
.article-content pre code{background:transparent;color:inherit;padding:0}
.article-content hr{border:none;border-top:1px solid var(--line-color);margin:2rem 0}
.not-found-card{text-align:center;padding:5rem 3rem}
.not-found-inner i{font-size:3.2rem;color:var(--brand-secondary);display:block;margin-bottom:1.2rem}
.not-found-inner h2{font-size:1.6rem;font-weight:700;margin-bottom:.8rem}
.not-found-inner p{color:var(--text-secondary);margin-bottom:1.6rem;max-width:420px;margin-left:auto;margin-right:auto}
.article-footer-tags{margin-top:2.2rem;padding-top:1.6rem;border-top:1px solid var(--line-color);display:flex;flex-wrap:wrap;gap:.5rem;align-items:center}
.tag-label{font-size:.85rem;color:var(--text-secondary);font-weight:600}
.related-section{padding:4.5rem 0;background:var(--bg-page)}
.section-head{text-align:center;margin-bottom:2.8rem}
.section-head .section-tag{display:inline-flex;align-items:center;gap:.4rem;background:var(--bg-soft);color:var(--brand-primary);padding:.3rem 1rem;border-radius:50px;font-size:.8rem;font-weight:600;margin-bottom:.8rem}
.section-head h2{font-size:clamp(1.6rem,2.6vw,2.1rem);font-weight:700;margin:0 0 .5rem;color:var(--text-primary)}
.section-head p{color:var(--text-secondary);max-width:560px;margin:0 auto;font-size:1rem}
.related-card{background:var(--bg-card);border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .25s ease,box-shadow .25s ease;height:100%;border:1px solid rgba(255,255,255,.6)}
.related-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px)}
.related-card .card-img-wrap{position:relative;overflow:hidden;aspect-ratio:16/9}
.related-card .card-img-wrap img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.related-card:hover .card-img-wrap img{transform:scale(1.04)}
.related-card .img-badge{position:absolute;top:.9rem;left:.9rem;background:rgba(27,109,168,.92);color:#fff;font-size:.75rem;font-weight:600;padding:.25rem .8rem;border-radius:50px;backdrop-filter:blur(4px)}
.related-card-body{padding:1.5rem 1.6rem 1.6rem}
.related-card-body h3{font-size:1.05rem;font-weight:600;line-height:1.55;margin:0 0 .6rem}
.related-card-body h3 a{color:var(--text-primary)}
.related-card-body h3 a:hover{color:var(--brand-primary);text-decoration:none}
.related-card-body p{font-size:.88rem;color:var(--text-secondary);margin-bottom:1rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.related-card-body .card-date{font-size:.8rem;color:#94A3B8;display:flex;align-items:center;gap:.35rem}
.cta-section{padding:0 0 4.5rem}
.cta-card{position:relative;background:linear-gradient(135deg,var(--deep-bg) 0%,var(--deep-bg-light) 100%);border-radius:var(--radius-lg);padding:3.5rem 3.5rem;color:#fff;overflow:hidden;box-shadow:var(--shadow-lg)}
.cta-card::before{content:'';position:absolute;right:-80px;top:-80px;width:260px;height:260px;border-radius:50%;background:rgba(232,135,42,.18)}
.cta-card::after{content:'';position:absolute;left:12%;bottom:-100px;width:200px;height:200px;border-radius:50%;background:rgba(79,168,160,.14)}
.cta-card .container-fluid{position:relative;z-index:1}
.cta-card h2{font-size:clamp(1.6rem,3vw,2.2rem);font-weight:700;margin-bottom:.75rem}
.cta-card p{color:rgba(255,255,255,.82);max-width:520px;margin-bottom:1.8rem;font-size:1.02rem}
.cta-actions{display:flex;gap:1rem;flex-wrap:wrap}
.site-footer{background:var(--deep-bg);color:rgba(255,255,255,.8);padding:4rem 0 0;font-size:.95rem}
.footer-top{padding-bottom:2.5rem}
.footer-brand .brand-logo{color:#fff;font-size:1.2rem}
.footer-brand .brand-logo i{color:var(--accent)}
.footer-brand p{color:rgba(255,255,255,.65);margin-top:.9rem;line-height:1.7;font-size:.9rem}
.footer-title{color:#fff;font-size:1rem;font-weight:600;margin-bottom:1.1rem;position:relative;padding-bottom:.6rem}
.footer-title::after{content:'';position:absolute;left:0;bottom:0;width:26px;height:3px;border-radius:3px;background:var(--accent)}
.footer-links{list-style:none;padding:0;margin:0}
.footer-links li{margin-bottom:.55rem}
.footer-links a{color:rgba(255,255,255,.7);text-decoration:none;transition:color .2s ease,padding-left .2s ease}
.footer-links a:hover{color:var(--accent);padding-left:4px}
.footer-contact p{color:rgba(255,255,255,.7);margin-bottom:.55rem;display:flex;align-items:center;gap:.5rem;font-size:.9rem}
.footer-contact i{color:var(--accent)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:1.3rem 0;text-align:center;color:rgba(255,255,255,.5);font-size:.85rem}
@media (max-width:1199.98px){
  .nav-links{gap:.15rem}
  .nav-link-item{padding:.4rem .7rem;font-size:.88rem}
}
@media (max-width:991.98px){
  .custom-toggler{display:block;margin-left:auto}
  .nav-links,.nav-cta{display:none}
  .nav-panel{flex-wrap:wrap;gap:.5rem}
  .mobile-nav{display:block;padding:1rem;background:var(--bg-card);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);margin-top:.75rem;width:100%}
  .mobile-nav .nav-link-item{display:flex;align-items:center;gap:.5rem;padding:.7rem 1rem;border-radius:var(--radius-md);font-size:.95rem}
  .mobile-nav .nav-link-item i{width:22px;text-align:center}
  .article-card{padding:2rem 1.8rem;max-width:100%}
  .cta-card{padding:2.5rem 2rem}
}
@media (max-width:767.98px){
  .site-header{padding-top:.7rem}
  .nav-panel{padding:.6rem .9rem;border-radius:var(--radius-md)}
  .brand-logo{font-size:1.05rem}
  .brand-logo i{font-size:1.35rem}
  .custom-toggler{font-size:1.4rem}
  .page-banner{padding:2.8rem 0 2rem}
  .banner-title{font-size:1.7rem}
  .banner-sub{font-size:.95rem}
  .breadcrumb-bar{max-width:100%;overflow-x:auto;white-space:nowrap;padding:.4rem .9rem}
  .breadcrumb-bar .current{max-width:140px}
  .article-section{padding:2rem 0 3rem}
  .article-card{padding:1.5rem 1.2rem;border-radius:var(--radius-md)}
  .article-header h1{font-size:1.45rem;line-height:1.4}
  .article-content{font-size:1rem;line-height:1.85}
  .article-content h2{font-size:1.35rem}
  .article-content h3{font-size:1.15rem}
  .article-content blockquote{padding:.9rem 1rem}
  .article-meta{gap:.5rem;font-size:.8rem}
  .badge-category{padding:.25rem .7rem;font-size:.75rem}
  .related-section{padding:3rem 0}
  .section-head{margin-bottom:2rem}
  .cta-section{padding:0 0 3rem}
  .cta-card{padding:2rem 1.4rem;border-radius:var(--radius-md)}
  .cta-card h2{font-size:1.4rem}
  .cta-card p{font-size:.92rem}
  .cta-actions{flex-direction:column}
  .cta-actions .btn{width:100%}
  .site-footer{padding-top:3rem}
  .footer-top{padding-bottom:1.5rem}
}
@media (max-width:520px){
  .nav-panel{padding:.5rem .7rem}
  .brand-logo span{font-size:.95rem;max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .banner-title{font-size:1.45rem}
  .article-card{padding:1.2rem .95rem}
  .article-content p{margin-bottom:1.2rem}
  .related-card-body{padding:1.2rem}
}

/* roulang page: category1 */
:root {
      --brand-primary: #1B6DA8;
      --brand-secondary: #2C7FB8;
      --brand-deep: #122A3C;
      --brand-deep-light: #1A3A4F;
      --accent: #E8872A;
      --accent-light: #F59F3E;
      --accent-soft: #FEF3E7;
      --teal-muted: #4FA8A0;
      --bg-page: #F4F7F9;
      --bg-card: #FFFFFF;
      --bg-soft-blue: #EDF4F9;
      --text-primary: #22303E;
      --text-secondary: #5A6B7C;
      --line-color: #E2E8F0;
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 18px;
      --shadow-xs: 0 1px 2px rgba(15, 35, 55, 0.06);
      --shadow-sm: 0 4px 12px rgba(15, 35, 55, 0.07);
      --shadow-md: 0 8px 24px rgba(15, 35, 55, 0.09);
      --shadow-lg: 0 16px 40px rgba(15, 35, 55, 0.12);
      --container-max: 1280px;
      --font-sans: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
    }

    * { box-sizing: border-box; }

    html { scroll-behavior: smooth; }

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

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

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

    a:hover { color: #14547e; }

    .container {
      max-width: var(--container-max);
      padding-left: 1.25rem;
      padding-right: 1.25rem;
    }

    section { scroll-margin-top: 100px; }

    .section-padding { padding: clamp(3.5rem, 7vw, 5.5rem) 0; }

    .section-title {
      font-size: clamp(1.6rem, 2.6vw, 2.2rem);
      font-weight: 700;
      line-height: 1.3;
      color: var(--text-primary);
      margin-bottom: 0.75rem;
      letter-spacing: -0.01em;
    }

    .section-subtitle {
      color: var(--text-secondary);
      font-size: 1.05rem;
      max-width: 640px;
      margin-bottom: 2.5rem;
      line-height: 1.8;
    }

    .text-accent { color: var(--accent); }
    .text-primary-blue { color: var(--brand-primary); }

    /* ===== Buttons ===== */
    .btn {
      border-radius: var(--radius-sm);
      font-weight: 600;
      padding: 0.6rem 1.4rem;
      transition: all .2s ease;
      border-width: 1.5px;
    }

    .btn:focus,
    .btn:focus-visible {
      outline: 2px solid var(--brand-primary);
      outline-offset: 2px;
      box-shadow: none;
    }

    .btn-accent {
      background: var(--accent);
      border-color: var(--accent);
      color: #1c2e3b;
      box-shadow: var(--shadow-xs);
    }

    .btn-accent:hover {
      background: var(--accent-light);
      border-color: var(--accent-light);
      color: #1c2e3b;
      transform: translateY(-2px);
      box-shadow: var(--shadow-md);
    }

    .btn-accent:active {
      transform: translateY(0);
      box-shadow: var(--shadow-xs);
    }

    .btn-outline-primary {
      background: transparent;
      border: 1.5px solid var(--brand-primary);
      color: var(--brand-primary);
      box-shadow: none;
    }

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

    .btn-primary {
      background: var(--brand-primary);
      border-color: var(--brand-primary);
      color: #fff;
      box-shadow: var(--shadow-xs);
    }

    .btn-primary:hover {
      background: #14547e;
      border-color: #14547e;
      color: #fff;
      transform: translateY(-2px);
      box-shadow: var(--shadow-md);
    }

    .btn-lg { padding: 0.75rem 1.8rem; font-size: 1.05rem; }

    /* ===== Header / Nav ===== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1020;
      padding: 0.85rem 0;
      background: rgba(244, 247, 249, 0.88);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(226, 232, 240, 0.6);
    }

    .nav-panel {
      display: flex;
      align-items: center;
      background: var(--bg-card);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-sm);
      padding: 0.6rem 0.9rem;
      gap: 0.5rem;
      flex-wrap: nowrap;
    }

    .brand-logo {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      font-weight: 700;
      font-size: 1.12rem;
      color: var(--text-primary);
      white-space: nowrap;
      line-height: 1.3;
    }

    .brand-logo i {
      color: var(--brand-primary);
      font-size: 1.55rem;
    }

    .brand-logo:hover { color: var(--text-primary); }

    .nav-links {
      display: flex;
      align-items: center;
      margin-left: auto;
      gap: 0.25rem;
    }

    .nav-link-item {
      display: inline-flex;
      align-items: center;
      gap: 0.35rem;
      padding: 0.5rem 1rem;
      border-radius: var(--radius-sm);
      color: var(--text-secondary);
      font-weight: 500;
      font-size: 0.95rem;
      white-space: nowrap;
      transition: all .2s ease;
      background: transparent;
    }

    .nav-link-item i { font-size: 1rem; }

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

    .nav-link-item.active {
      background: var(--bg-soft-blue);
      color: var(--brand-primary);
      font-weight: 600;
      box-shadow: var(--shadow-xs);
    }

    .nav-cta { margin-left: 0.6rem; }

    .nav-cta .btn { padding: 0.5rem 1.1rem; }

    .custom-toggler {
      display: none;
      background: transparent;
      border: 1px solid var(--line-color);
      border-radius: var(--radius-sm);
      width: 44px;
      height: 44px;
      align-items: center;
      justify-content: center;
      color: var(--text-primary);
      font-size: 1.4rem;
      margin-left: auto;
      box-shadow: var(--shadow-xs);
    }

    .custom-toggler:hover { background: var(--bg-soft-blue); }
    .custom-toggler:focus-visible { outline: 2px solid var(--brand-primary); outline-offset: 2px; }

    .mobile-nav {
      margin-top: 0.85rem;
      background: var(--bg-card);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      padding: 0.5rem 0.75rem;
    }

    .mobile-nav .nav-link-item {
      display: block;
      padding: 0.75rem 1rem;
      border-radius: var(--radius-sm);
      margin-bottom: 0.15rem;
      font-size: 1rem;
    }

    .mobile-nav .nav-link-item:last-child { margin-bottom: 0; }

    /* ===== Page Hero ===== */
    .page-hero {
      position: relative;
      padding: clamp(3.2rem, 6vw, 5rem) 0 3.8rem;
      background:
        linear-gradient(120deg, rgba(244, 247, 249, 0.97) 0%, rgba(237, 244, 249, 0.92) 50%, rgba(237, 244, 249, 0.82) 100%),
        url('/assets/images/backpic/back-1.png') center/cover no-repeat;
      border-bottom: 1px solid var(--line-color);
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 0.45rem;
      background: rgba(27, 109, 168, 0.1);
      color: var(--brand-primary);
      font-size: 0.85rem;
      font-weight: 600;
      padding: 0.35rem 0.9rem;
      border-radius: 100px;
      margin-bottom: 1.2rem;
      letter-spacing: 0.02em;
    }

    .hero-badge i { font-size: 0.9rem; }

    .page-hero h1 {
      font-size: clamp(2rem, 4vw, 3.2rem);
      font-weight: 700;
      line-height: 1.2;
      margin-bottom: 1rem;
      color: var(--text-primary);
      letter-spacing: -0.02em;
    }

    .hero-lead {
      font-size: 1.125rem;
      color: var(--text-secondary);
      max-width: 640px;
      margin-bottom: 1.8rem;
      line-height: 1.85;
    }

    .hero-actions { display: flex; flex-wrap: wrap; gap: 0.8rem; }

    .hero-actions .btn { min-width: 150px; }

    .hero-card {
      background: var(--bg-card);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-lg);
      padding: 1.8rem;
      border: 1px solid rgba(226, 232, 240, 0.6);
      position: relative;
      overflow: hidden;
    }

    .hero-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 4px;
      background: linear-gradient(90deg, var(--brand-primary), var(--accent));
    }

    .hero-card-icon {
      width: 54px;
      height: 54px;
      border-radius: var(--radius-md);
      background: var(--bg-soft-blue);
      color: var(--brand-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.6rem;
      margin-bottom: 1rem;
    }

    .hero-card h3 {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 0.4rem;
    }

    .hero-card p {
      color: var(--text-secondary);
      font-size: 0.95rem;
      margin-bottom: 1.2rem;
    }

    .hero-card-stats {
      display: flex;
      gap: 1rem;
      padding-top: 1rem;
      border-top: 1px solid var(--line-color);
      margin-top: 0.75rem;
    }

    .hero-card-stat .num {
      font-size: 1.35rem;
      font-weight: 700;
      color: var(--brand-primary);
      font-variant-numeric: tabular-nums;
      line-height: 1.2;
    }

    .hero-card-stat .label {
      font-size: 0.8rem;
      color: var(--text-secondary);
    }

    /* ===== Stat Band ===== */
    .stat-band {
      background: var(--brand-deep);
      color: #fff;
      padding: 2rem 0;
    }

    .stat-item {
      text-align: center;
      padding: 0.75rem 0.5rem;
    }

    .stat-num {
      font-size: clamp(1.8rem, 3vw, 2.5rem);
      font-weight: 700;
      color: var(--accent-light);
      line-height: 1.2;
      font-variant-numeric: tabular-nums;
      letter-spacing: 0.02em;
    }

    .stat-label {
      color: rgba(255, 255, 255, 0.72);
      font-size: 0.875rem;
      margin-top: 0.25rem;
      letter-spacing: 0.04em;
    }

    /* ===== Section Header ===== */
    .section-head {
      margin-bottom: 2.5rem;
    }

    .section-tag {
      display: inline-block;
      background: var(--accent-soft);
      color: var(--accent);
      font-size: 0.8rem;
      font-weight: 600;
      padding: 0.25rem 0.85rem;
      border-radius: 100px;
      margin-bottom: 0.6rem;
      letter-spacing: 0.03em;
    }

    .section-tag.blue {
      background: var(--bg-soft-blue);
      color: var(--brand-primary);
    }

    /* ===== Coverage Cards ===== */
    .coverage-grid .coverage-card {
      background: var(--bg-card);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
      height: 100%;
      transition: all .25s ease;
      border: 1px solid rgba(226, 232, 240, 0.5);
    }

    .coverage-grid .coverage-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }

    .coverage-card .cover-img {
      position: relative;
      overflow: hidden;
      aspect-ratio: 16 / 9;
      background: #e8edf2;
    }

    .coverage-card .cover-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .3s ease;
    }

    .coverage-card:hover .cover-img img { transform: scale(1.04); }

    .coverage-card .cover-tag {
      position: absolute;
      top: 12px;
      left: 12px;
      background: rgba(18, 42, 60, 0.85);
      color: #fff;
      font-size: 0.75rem;
      font-weight: 600;
      padding: 0.2rem 0.7rem;
      border-radius: 100px;
      backdrop-filter: blur(4px);
    }

    .coverage-card .cover-tag.orange { background: rgba(232, 135, 42, 0.92); }

    .coverage-card .card-body {
      padding: 1.5rem;
    }

    .coverage-card .card-body h3 {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 0.5rem;
    }

    .coverage-card .card-body p {
      color: var(--text-secondary);
      font-size: 0.925rem;
      margin-bottom: 0.9rem;
      line-height: 1.7;
    }

    .card-more {
      color: var(--brand-primary);
      font-weight: 600;
      font-size: 0.9rem;
      display: inline-flex;
      align-items: center;
      gap: 0.3rem;
      transition: gap .2s ease;
    }

    .card-more i { font-size: 0.8rem; }

    .card-more:hover { gap: 0.55rem; color: #14547e; }

    /* ===== Feature Cards ===== */
    .feature-grid .feature-card {
      background: var(--bg-card);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      padding: 1.8rem;
      height: 100%;
      transition: all .25s ease;
      border: 1px solid rgba(226, 232, 240, 0.5);
    }

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

    .feature-card .feature-icon {
      width: 52px;
      height: 52px;
      border-radius: var(--radius-md);
      background: var(--bg-soft-blue);
      color: var(--brand-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      margin-bottom: 1.1rem;
      transition: background .25s ease, color .25s ease;
    }

    .feature-card:hover .feature-icon {
      background: var(--accent);
      color: #fff;
    }

    .feature-card h3 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 0.5rem;
    }

    .feature-card p {
      color: var(--text-secondary);
      font-size: 0.9rem;
      margin-bottom: 0;
      line-height: 1.7;
    }

    /* ===== Process Steps ===== */
    .process-section {
      background: var(--bg-card);
      border-top: 1px solid var(--line-color);
      border-bottom: 1px solid var(--line-color);
    }

    .step-item {
      position: relative;
      padding: 1.5rem;
      border-radius: var(--radius-md);
      transition: all .25s ease;
      height: 100%;
    }

    .step-item:hover {
      background: var(--bg-soft-blue);
    }

    .step-number {
      font-size: 2rem;
      font-weight: 700;
      color: var(--accent);
      line-height: 1;
      margin-bottom: 0.8rem;
      font-variant-numeric: tabular-nums;
      letter-spacing: -0.02em;
    }

    .step-item h3 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 0.5rem;
    }

    .step-item p {
      color: var(--text-secondary);
      font-size: 0.9rem;
      margin-bottom: 0;
    }

    .step-arrow {
      position: absolute;
      top: 2.2rem;
      right: -0.75rem;
      color: var(--line-color);
      font-size: 1.4rem;
      z-index: 1;
    }

    /* ===== Gallery ===== */
    .gallery-grid .gallery-card {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      aspect-ratio: 4 / 3;
      display: block;
    }

    .gallery-grid .gallery-card.tall { aspect-ratio: 3 / 4; }

    .gallery-grid .gallery-card img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .3s ease;
    }

    .gallery-card:hover img { transform: scale(1.05); }

    .gallery-card .gallery-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(0, 0, 0, 0) 35%, rgba(18, 42, 60, 0.82) 100%);
      display: flex;
      flex-direction: column;
      justify-content: flex-end;
      padding: 1.5rem;
      transition: background .3s ease;
    }

    .gallery-card:hover .gallery-overlay { background: linear-gradient(180deg, rgba(0, 0, 0, 0) 20%, rgba(18, 42, 60, 0.9) 100%); }

    .gallery-tag {
      display: inline-block;
      background: var(--accent);
      color: #1c2e3b;
      font-size: 0.75rem;
      font-weight: 600;
      padding: 0.15rem 0.65rem;
      border-radius: 100px;
      margin-bottom: 0.5rem;
      width: fit-content;
    }

    .gallery-title {
      color: #fff;
      font-size: 1rem;
      font-weight: 600;
      line-height: 1.4;
      margin: 0;
    }

    .gallery-more {
      color: rgba(255, 255, 255, 0.8);
      font-size: 0.8rem;
      margin-top: 0.35rem;
    }

    /* ===== FAQ ===== */
    .faq-section {
      background: var(--bg-page);
    }

    .faq-card {
      background: var(--bg-card);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
      border: 1px solid var(--line-color);
    }

    .faq-card .accordion-item {
      background: transparent;
      border: none;
      border-bottom: 1px solid var(--line-color);
    }

    .faq-card .accordion-item:last-child { border-bottom: none; }

    .faq-card .accordion-button {
      background: transparent;
      color: var(--text-primary);
      font-weight: 600;
      font-size: 1rem;
      padding: 1.1rem 1.4rem;
      box-shadow: none;
      transition: background .2s ease;
    }

    .faq-card .accordion-button:hover { background: var(--bg-soft-blue); }

    .faq-card .accordion-button:not(.collapsed) {
      background: var(--bg-soft-blue);
      color: var(--brand-primary);
    }

    .faq-card .accordion-button:focus-visible {
      outline: 2px solid var(--brand-primary);
      outline-offset: -2px;
    }

    .faq-card .accordion-button::after {
      background-image: none;
      content: '+';
      font-size: 1.4rem;
      font-weight: 400;
      line-height: 1;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--text-secondary);
      width: 24px;
      height: 24px;
      transition: transform .25s ease;
      font-family: var(--font-sans);
    }

    .faq-card .accordion-button:not(.collapsed)::after {
      transform: rotate(45deg);
      color: var(--accent);
    }

    .faq-card .accordion-body {
      padding: 0 1.4rem 1.25rem;
      color: var(--text-secondary);
      font-size: 0.95rem;
      line-height: 1.8;
    }

    /* ===== CTA ===== */
    .cta-section {
      padding: clamp(3rem, 5vw, 4.5rem) 0;
      background: var(--bg-page);
    }

    .cta-card {
      background: var(--bg-card);
      border-radius: clamp(16px, 3vw, 26px);
      box-shadow: var(--shadow-lg);
      padding: clamp(2rem, 4vw, 3.5rem);
      position: relative;
      overflow: hidden;
      border: 1px solid rgba(226, 232, 240, 0.6);
    }

    .cta-card::before {
      content: '';
      position: absolute;
      top: -60px;
      right: -60px;
      width: 200px;
      height: 200px;
      border-radius: 50%;
      background: var(--bg-soft-blue);
      opacity: 0.6;
    }

    .cta-card::after {
      content: '';
      position: absolute;
      bottom: -40px;
      left: -40px;
      width: 140px;
      height: 140px;
      border-radius: 50%;
      background: var(--accent-soft);
      opacity: 0.5;
    }

    .cta-card .cta-content { position: relative; z-index: 1; }

    .cta-card h2 {
      font-size: clamp(1.5rem, 3vw, 2.2rem);
      font-weight: 700;
      line-height: 1.3;
      margin-bottom: 0.75rem;
    }

    .cta-card p {
      color: var(--text-secondary);
      font-size: 1rem;
      max-width: 520px;
      margin-bottom: 1.5rem;
    }

    .cta-actions { display: flex; flex-wrap: wrap; gap: 0.8rem; }

    .cta-actions .btn { min-width: 140px; }

    /* ===== Footer ===== */
    .site-footer {
      background: var(--brand-deep);
      color: rgba(255, 255, 255, 0.8);
      padding-top: 3.5rem;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }

    .site-footer .footer-top { padding-bottom: 2rem; }

    .site-footer .brand-logo {
      color: #fff;
      font-size: 1.2rem;
      margin-bottom: 0.75rem;
    }

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

    .site-footer .footer-brand p {
      color: rgba(255, 255, 255, 0.62);
      font-size: 0.9rem;
      line-height: 1.7;
      margin-top: 0.6rem;
      max-width: 320px;
    }

    .footer-title {
      color: #fff;
      font-size: 0.95rem;
      font-weight: 600;
      margin-bottom: 1rem;
      letter-spacing: 0.04em;
    }

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

    .footer-links li { margin-bottom: 0.55rem; }

    .footer-links a {
      color: rgba(255, 255, 255, 0.6);
      font-size: 0.88rem;
      transition: color .2s ease, padding-left .2s ease;
    }

    .footer-links a:hover {
      color: var(--accent-light);
      padding-left: 5px;
    }

    .footer-contact p {
      color: rgba(255, 255, 255, 0.6);
      font-size: 0.88rem;
      margin-bottom: 0.55rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }

    .footer-contact i { color: var(--accent-light); }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding: 1.2rem 0;
      color: rgba(255, 255, 255, 0.45);
      font-size: 0.82rem;
      text-align: center;
    }

    /* ===== Responsive ===== */
    @media (min-width: 1200px) {
      .hero-actions .btn { min-width: 170px; }
    }

    @media (max-width: 991.98px) {
      .nav-links,
      .nav-cta { display: none; }

      .custom-toggler { display: inline-flex; }

      .brand-logo { margin-right: auto; }

      .stat-item { padding: 0.5rem 0.25rem; }

      .step-arrow { display: none; }

      .hero-card { margin-top: 1.5rem; }
    }

    @media (min-width: 992px) {
      .mobile-nav { display: none !important; }
    }

    @media (max-width: 767.98px) {
      .section-subtitle { font-size: 0.98rem; }

      .cta-card .cta-actions .btn { width: 100%; }

      .coverage-grid .coverage-card { max-width: 100%; }

      .page-hero h1 { font-size: clamp(1.8rem, 6vw, 2.3rem); }

      .hero-lead { font-size: 1rem; }

      .stat-num { font-size: 1.6rem; }

      .stat-band { padding: 1.6rem 0; }
    }

    @media (max-width: 520px) {
      .container { padding-left: 1rem; padding-right: 1rem; }

      .brand-logo span { font-size: 0.95rem; }

      .nav-panel { padding: 0.5rem 0.6rem; }

      .brand-logo i { font-size: 1.3rem; }

      .hero-actions { flex-direction: column; }

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

      .cta-actions { flex-direction: column; }

      .footer-title { margin-bottom: 0.75rem; }

      .site-footer .footer-top { padding-bottom: 1rem; }
    }

/* roulang page: category2 */
:root {
  --brand-primary: #1B6DA8;
  --brand-secondary: #2C7FB8;
  --color-deep: #122A3C;
  --color-deep-2: #1A3A4F;
  --accent: #E8872A;
  --accent-light: #F59F3E;
  --teal: #4FA8A0;
  --bg-page: #F6F8FA;
  --bg-card: #FFFFFF;
  --text-primary: #22303E;
  --text-secondary: #5A6B7C;
  --line-color: #E2E8F0;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-xs: 0 1px 2px rgba(15,35,55,.06);
  --shadow-sm: 0 4px 12px rgba(15,35,55,.07);
  --shadow-md: 0 8px 24px rgba(15,35,55,.09);
  --shadow-lg: 0 16px 40px rgba(15,35,55,.12);
  --font-main: system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font-main);background:var(--bg-page);color:var(--text-primary);font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased}
a{color:var(--brand-primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--accent)}
img{max-width:100%;height:auto}
.container{max-width:1280px;padding-left:1.25rem;padding-right:1.25rem}
.btn{border-radius:var(--radius-sm);font-weight:600;transition:all .25s ease;font-size:1rem}
.btn:focus-visible,.form-control:focus-visible{outline:2px solid var(--brand-primary);outline-offset:3px;box-shadow:none}
.btn-accent{background:var(--accent);border:1.5px solid var(--accent);color:#fff;padding:.6rem 1.4rem;box-shadow:var(--shadow-xs)}
.btn-accent:hover{background:var(--accent-light);border-color:var(--accent-light);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-accent:active{transform:translateY(0);box-shadow:var(--shadow-xs);background:#cf7115;border-color:#cf7115}
.btn-outline-light-custom{border:1.5px solid rgba(255,255,255,.85);color:#fff;background:transparent;padding:.6rem 1.4rem}
.btn-outline-light-custom:hover{background:#fff;color:var(--color-deep);transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-outline-primary-custom{border:1.5px solid var(--brand-primary);color:var(--brand-primary);background:transparent;padding:.6rem 1.4rem}
.btn-outline-primary-custom:hover{background:var(--brand-primary);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-md)}

.site-header{background:var(--bg-page);padding-top:1rem;position:relative;z-index:50}
.nav-panel{background:var(--bg-card);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:.9rem 1.25rem;display:flex;align-items:center;gap:1rem;flex-wrap:wrap}
.brand-logo{display:inline-flex;align-items:center;gap:.5rem;font-size:1.25rem;font-weight:700;color:var(--color-deep);white-space:nowrap}
.brand-logo i{color:var(--brand-primary);font-size:1.6rem}
.brand-logo span{letter-spacing:.01em}
.nav-links{display:flex;align-items:center;gap:.35rem;margin-left:.5rem;flex-wrap:wrap}
.nav-link-item{display:inline-flex;align-items:center;gap:.4rem;padding:.5rem 1rem;border-radius:var(--radius-md);color:var(--text-primary);font-weight:500;transition:all .2s ease}
.nav-link-item i{font-size:1.05rem;color:var(--brand-primary);transition:color .2s ease}
.nav-link-item:hover{background:#EEF3F8;color:var(--brand-primary)}
.nav-link-item.active{background:#E4EEF6;color:var(--brand-primary);font-weight:600;box-shadow:inset 0 0 0 1px rgba(27,109,168,.12)}
.nav-link-item.active i{color:var(--accent)}
.nav-cta{margin-left:auto}
.nav-cta .btn{font-size:.95rem;border-radius:50px;padding:.45rem 1.2rem}
.custom-toggler{border:none;background:transparent;font-size:1.6rem;color:var(--brand-primary);padding:.3rem .5rem;display:none;line-height:1}
.mobile-nav{padding:.75rem 0 0}
.mobile-nav .nav-link-item{display:flex;width:100%;padding:.7rem 1rem;border-radius:var(--radius-sm)}

.hero-area{position:relative;background:linear-gradient(135deg,#f0f6fb 0%,#eaf1f8 55%,#e3edf5 100%);border-radius:0 0 0 0;overflow:hidden;padding:3.5rem 0 0}
.hero-area::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;opacity:.35;z-index:0}
.hero-area .container{position:relative;z-index:1}
.hero-content{padding:2.5rem 0 4.5rem}
.hero-badge{display:inline-flex;align-items:center;gap:.45rem;background:#fff;border:1px solid var(--line-color);border-radius:50px;padding:.35rem 1rem;font-size:.875rem;color:var(--brand-primary);font-weight:600;box-shadow:var(--shadow-xs)}
.hero-badge i{color:var(--accent)}
.hero-title{font-size:clamp(1.8rem,4vw,3rem);font-weight:700;line-height:1.25;margin:1.25rem 0 1rem;color:var(--color-deep)}
.hero-title .text-accent{color:var(--accent)}
.hero-subtitle{font-size:1.125rem;color:var(--text-secondary);max-width:620px;margin-bottom:2rem;line-height:1.9}
.hero-actions{display:flex;gap:.8rem;flex-wrap:wrap;margin-bottom:2.5rem}
.hero-stats{display:flex;gap:2rem;flex-wrap:wrap}
.hero-stat{background:rgba(255,255,255,.72);backdrop-filter:blur(4px);border-radius:var(--radius-md);padding:.9rem 1.35rem;box-shadow:var(--shadow-xs);border:1px solid rgba(255,255,255,.8)}
.hero-stat .num{font-size:1.6rem;font-weight:700;color:var(--brand-primary);line-height:1.2}
.hero-stat .label{font-size:.825rem;color:var(--text-secondary)}

.countdown-bar{background:linear-gradient(90deg,var(--color-deep) 0%,var(--color-deep-2) 100%);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);padding:1.1rem 1.5rem;display:flex;align-items:center;gap:1rem;flex-wrap:wrap;transform:translateY(50%);position:relative;z-index:5;margin-bottom:2.5rem}
.countdown-label{color:#fff;font-weight:600;font-size:.95rem;display:flex;align-items:center;gap:.5rem}
.countdown-label i{color:var(--accent-light)}
.countdown-timer{display:flex;gap:.55rem;margin-left:auto}
.timer-block{background:rgba(255,255,255,.1);border-radius:var(--radius-sm);padding:.4rem .7rem;text-align:center;min-width:58px}
.timer-block .val{font-size:1.5rem;font-weight:700;color:var(--accent-light);line-height:1.2;font-variant-numeric:tabular-nums;letter-spacing:.03em}
.timer-block .unit{font-size:.72rem;color:rgba(255,255,255,.75);letter-spacing:.05em}
.countdown-cta{margin-left:.5rem}

.section-promo{background:var(--bg-page);padding:4rem 0 3rem}
.section-title{font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:700;color:var(--color-deep);margin-bottom:.75rem;line-height:1.35}
.section-subtitle{color:var(--text-secondary);max-width:680px;font-size:1.05rem}
.section-head{margin-bottom:2.5rem}

.feature-card{background:var(--bg-card);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);padding:1.8rem 1.6rem;height:100%;transition:box-shadow .25s ease,transform .25s ease;position:relative;overflow:hidden}
.feature-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px)}
.feature-card .icon-wrap{width:56px;height:56px;border-radius:var(--radius-md);background:#EAF1F7;display:flex;align-items:center;justify-content:center;font-size:1.5rem;color:var(--brand-primary);margin-bottom:1rem;transition:background .25s ease,color .25s ease}
.feature-card:hover .icon-wrap{background:var(--accent);color:#fff}
.feature-card h3{font-size:1.15rem;font-weight:700;color:var(--text-primary);margin-bottom:.6rem}
.feature-card p{color:var(--text-secondary);font-size:.95rem;margin:0;line-height:1.75}
.feature-card .card-tag{position:absolute;top:1rem;right:1rem;font-size:.72rem;background:#FDF2E5;color:var(--accent);padding:.15rem .6rem;border-radius:50px;font-weight:600}

.promo-showcase{background:#fff;padding:5rem 0 4rem}
.promo-card{background:var(--bg-card);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);overflow:hidden;height:100%;transition:box-shadow .3s ease,transform .3s ease;border:1px solid rgba(226,232,240,.6)}
.promo-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-6px)}
.promo-card .img-wrap{position:relative;overflow:hidden;aspect-ratio:16/9;background:#eef4f8}
.promo-card .img-wrap img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.promo-card:hover .img-wrap img{transform:scale(1.04)}
.promo-card .img-wrap::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 55%,rgba(18,42,60,.28) 100%)}
.promo-card .promo-tag{position:absolute;top:1rem;left:1rem;z-index:3;background:var(--accent);color:#fff;font-size:.78rem;font-weight:600;padding:.2rem .8rem;border-radius:50px;box-shadow:var(--shadow-xs)}
.promo-card .promo-tag.blue{background:var(--brand-primary)}
.promo-card .promo-tag.teal{background:var(--teal)}
.promo-body{padding:1.4rem 1.5rem 1.6rem}
.promo-body .promo-id{font-size:.78rem;color:var(--text-secondary);letter-spacing:.05em;margin-bottom:.3rem;font-weight:600}
.promo-body h3{font-size:1.2rem;font-weight:700;color:var(--text-primary);margin-bottom:.55rem}
.promo-body p{font-size:.92rem;color:var(--text-secondary);line-height:1.7;margin-bottom:1rem}
.promo-body .promo-meta{display:flex;align-items:center;gap:.75rem;font-size:.85rem;color:var(--text-secondary);flex-wrap:wrap}
.promo-body .promo-meta i{color:var(--brand-primary)}
.promo-body .btn{margin-top:.4rem}

.feature-list{background:var(--bg-page);padding:4.5rem 0}
.feature-list .list-number{font-size:2rem;font-weight:800;color:#D9E4EC;line-height:1;margin-bottom:.4rem}
.feature-list h3{font-size:1.15rem;font-weight:700;color:var(--text-primary);margin-bottom:.4rem}
.feature-list p{color:var(--text-secondary);font-size:.92rem;margin:0;line-height:1.7}
.feature-list .list-item{background:var(--bg-card);border-radius:var(--radius-md);box-shadow:var(--shadow-xs);padding:1.3rem 1.4rem;height:100%;transition:box-shadow .2s ease}
.feature-list .list-item:hover{box-shadow:var(--shadow-sm)}

.how-card{background:var(--bg-card);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);padding:1.8rem 1.5rem;height:100%;text-align:center;transition:transform .25s ease,box-shadow .25s ease;position:relative}
.how-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.how-card .step-num{display:inline-flex;align-items:center;justify-content:center;width:52px;height:52px;border-radius:50%;background:var(--brand-primary);color:#fff;font-size:1.25rem;font-weight:700;margin-bottom:1rem;box-shadow:0 6px 16px rgba(27,109,168,.22)}
.how-card .step-num.accent-bg{background:var(--accent);box-shadow:0 6px 16px rgba(232,135,42,.24)}
.how-card h3{font-size:1.1rem;font-weight:700;color:var(--text-primary);margin-bottom:.6rem}
.how-card p{color:var(--text-secondary);font-size:.9rem;margin:0;line-height:1.7}

.latest-list{background:#fff;padding:4.5rem 0}
.latest-item{display:flex;align-items:center;gap:1.2rem;background:var(--bg-card);border:1px solid var(--line-color);border-radius:var(--radius-md);padding:1.1rem 1.2rem;margin-bottom:1rem;transition:box-shadow .2s ease,transform .2s ease}
.latest-item:hover{box-shadow:var(--shadow-sm);transform:translateX(4px)}
.latest-item .item-icon{flex-shrink:0;width:48px;height:48px;border-radius:var(--radius-sm);background:#EAF1F7;display:flex;align-items:center;justify-content:center;color:var(--brand-primary);font-size:1.3rem}
.latest-item .item-info{flex:1;min-width:0}
.latest-item .item-info h4{font-size:1rem;font-weight:600;color:var(--text-primary);margin:0 0 .2rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.latest-item .item-info p{font-size:.85rem;color:var(--text-secondary);margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.latest-item .item-date{flex-shrink:0;font-size:.85rem;color:var(--text-secondary);display:flex;align-items:center;gap:.35rem}
.latest-item .item-arrow{flex-shrink:0;width:36px;height:36px;border-radius:50%;border:1px solid var(--line-color);display:flex;align-items:center;justify-content:center;color:var(--brand-primary);transition:all .2s ease}
.latest-item:hover .item-arrow{background:var(--brand-primary);color:#fff;border-color:var(--brand-primary)}

.faq-section{background:var(--bg-page);padding:4.5rem 0}
.accordion-item{border:1px solid var(--line-color);border-radius:var(--radius-md)!important;overflow:hidden;margin-bottom:1rem;background:var(--bg-card);box-shadow:var(--shadow-xs)}
.accordion-button{font-weight:600;color:var(--text-primary);background:var(--bg-card);font-size:1rem;padding:1.1rem 1.3rem}
.accordion-button:not(.collapsed){background:#EDF4F9;color:var(--brand-primary);box-shadow:none}
.accordion-button:focus{box-shadow:none;border-color:var(--line-color)}
.accordion-button::after{background-image:none;content:'+';font-size:1.5rem;font-weight:400;color:var(--accent);width:auto;height:auto;background-size:auto;transition:transform .25s ease;display:flex;align-items:center;justify-content:center}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg);color:var(--accent)}
.accordion-body{color:var(--text-secondary);font-size:.95rem;line-height:1.8;padding:1rem 1.3rem 1.3rem}
.accordion-body ul{padding-left:1.1rem;margin-bottom:.5rem}
.accordion-body li{margin-bottom:.3rem}

.cta-section{background:linear-gradient(135deg,var(--color-deep) 0%,var(--color-deep-2) 100%);padding:4.5rem 0}
.cta-card{background:var(--bg-card);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);padding:3rem 2.5rem;text-align:center}
.cta-card h2{font-size:clamp(1.5rem,2.6vw,2rem);font-weight:700;color:var(--color-deep);margin-bottom:.75rem}
.cta-card p{color:var(--text-secondary);max-width:640px;margin:0 auto 1.75rem;font-size:1.05rem}
.cta-actions{display:flex;gap:.8rem;justify-content:center;flex-wrap:wrap}
.btn-accent-lg{background:var(--accent);border:1.5px solid var(--accent);color:#fff;padding:.75rem 2rem;font-size:1.05rem;border-radius:50px;box-shadow:var(--shadow-xs);transition:all .25s ease}
.btn-accent-lg:hover{background:var(--accent-light);border-color:var(--accent-light);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-outline-lg{border:1.5px solid var(--brand-primary);color:var(--brand-primary);padding:.75rem 2rem;font-size:1.05rem;border-radius:50px;background:transparent;transition:all .25s ease}
.btn-outline-lg:hover{background:var(--brand-primary);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-md)}

.site-footer{background:var(--color-deep);color:rgba(255,255,255,.8);padding:3.5rem 0 0;font-size:.9rem}
.site-footer .footer-brand a{color:#fff}
.site-footer .footer-brand p{margin-top:.8rem;line-height:1.8;color:rgba(255,255,255,.65);max-width:360px}
.footer-title{color:#fff;font-size:1rem;font-weight:600;margin-bottom:1.1rem;letter-spacing:.02em}
.footer-links{list-style:none;padding:0;margin:0}
.footer-links li{margin-bottom:.55rem}
.footer-links a{color:rgba(255,255,255,.7);transition:color .2s ease}
.footer-links a:hover{color:var(--accent-light)}
.footer-contact p{margin-bottom:.55rem;color:rgba(255,255,255,.7);display:flex;align-items:center;gap:.5rem}
.footer-contact i{color:var(--accent-light)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:1.2rem 0;margin-top:2rem;text-align:center;color:rgba(255,255,255,.45);font-size:.85rem}

@media (max-width:991.98px){
  .nav-links{display:none}
  .custom-toggler{display:block}
  .nav-panel{flex-wrap:nowrap}
  .brand-logo{font-size:1.1rem}
  .hero-title{font-size:1.7rem}
  .hero-subtitle{font-size:1rem}
  .countdown-bar{transform:none;margin-bottom:1.5rem}
  .countdown-timer{flex-wrap:wrap}
}
@media (max-width:767.98px){
  .nav-cta .btn{padding:.4rem .9rem;font-size:.85rem}
  .hero-area{padding-top:1.5rem}
  .hero-content{padding:2rem 0 3rem}
  .hero-stats{gap:1rem}
  .hero-stat{padding:.7rem 1rem}
  .hero-stat .num{font-size:1.25rem}
  .countdown-bar{gap:.75rem}
  .timer-block{min-width:48px;padding:.3rem .5rem}
  .timer-block .val{font-size:1.1rem}
  .countdown-cta{margin-left:0;width:100%}
  .countdown-cta .btn{width:100%}
  .section-promo{padding:2.5rem 0}
  .section-title{font-size:1.35rem}
  .latest-item{flex-wrap:wrap;gap:.8rem}
  .latest-item .item-date{width:100%;justify-content:flex-start}
  .cta-card{padding:2rem 1.25rem}
  .cta-card p{font-size:.95rem}
  .site-footer .footer-brand p{max-width:100%}
}

/* roulang page: category3 */
:root {
  --brand-primary: #1B6DA8;
  --brand-primary-dark: #155A8A;
  --brand-secondary: #4FA8A0;
  --accent: #E8872A;
  --accent-light: #F59F3E;
  --color-deep: #122A3C;
  --color-deep-2: #1A3A4F;
  --bg-page: #F6F8FA;
  --bg-card: #FFFFFF;
  --bg-soft: #EDF4F9;
  --text-primary: #22303E;
  --text-secondary: #5A6B7C;
  --line-color: #E2E8F0;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --shadow-xs: 0 1px 2px rgba(15, 35, 55, .06);
  --shadow-sm: 0 4px 12px rgba(15, 35, 55, .07);
  --shadow-md: 0 8px 24px rgba(15, 35, 55, .09);
  --shadow-lg: 0 16px 40px rgba(15, 35, 55, .12);
  --container-max: 1280px;
  --font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-family);
  background: var(--bg-page);
  color: var(--text-primary);
  line-height: 1.8;
  font-size: 1rem;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; }
a { color: var(--brand-primary); text-decoration: none; }
a:hover { color: var(--brand-primary-dark); }
.container { max-width: var(--container-max); }
.btn { border-radius: var(--radius-sm); font-weight: 600; transition: all .25s ease; }
.btn:focus-visible { outline: 2px solid var(--brand-primary); outline-offset: 3px; }
.btn-accent {
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: #fff;
  border: none;
  box-shadow: var(--shadow-xs);
  padding: .7rem 1.6rem;
  border-radius: var(--radius-sm);
}
.btn-accent:hover { background: linear-gradient(135deg, var(--accent-light), var(--accent)); color: #fff; box-shadow: var(--shadow-md); transform: translateY(-2px); }
.btn-outline-primary {
  background: #fff;
  color: var(--brand-primary);
  border: 1.5px solid var(--brand-primary);
  padding: .7rem 1.6rem;
  border-radius: var(--radius-sm);
}
.btn-outline-primary:hover { background: var(--brand-primary); color: #fff; box-shadow: var(--shadow-sm); transform: translateY(-2px); }
.btn-light-outline {
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255,255,255,.7);
  padding: .6rem 1.4rem;
  border-radius: var(--radius-sm);
}
.btn-light-outline:hover { background: rgba(255,255,255,.15); color: #fff; border-color: #fff; }

/* 导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1050;
  padding: 14px 0 10px;
  background: var(--bg-page);
}
.nav-panel {
  background: linear-gradient(120deg, var(--color-deep), var(--color-deep-2));
  border-radius: var(--radius-lg);
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  box-shadow: 0 6px 24px rgba(18, 42, 60, .25);
}
.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #fff;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: .5px;
  white-space: nowrap;
}
.brand-logo i { font-size: 1.35rem; color: var(--accent-light); }
.brand-logo:hover { color: #fff; }
.nav-links { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.nav-link-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 10px;
  color: rgba(255,255,255,.85);
  font-size: .9375rem;
  font-weight: 500;
  transition: all .25s ease;
  white-space: nowrap;
}
.nav-link-item i { font-size: 1rem; }
.nav-link-item:hover { background: rgba(255,255,255,.12); color: #fff; }
.nav-link-item.active {
  background: rgba(255,255,255,.16);
  color: #fff;
  box-shadow: var(--shadow-xs);
  border-left: 3px solid var(--accent);
}
.nav-cta { margin-left: auto; }
.nav-cta .btn { padding: .5rem 1.2rem; font-size: .9375rem; }
.custom-toggler {
  display: none;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.25);
  border-radius: 10px;
  color: #fff;
  font-size: 1.4rem;
  line-height: 1;
  padding: 8px 10px;
  width: 44px;
  height: 44px;
}
.mobile-nav {
  background: var(--color-deep);
  border-radius: var(--radius-md);
  margin-top: 10px;
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.mobile-nav .nav-link-item { display: flex; }

/* 页脚 */
.site-footer {
  background: linear-gradient(135deg, var(--color-deep), var(--color-deep-2));
  padding: 60px 0 0;
  margin-top: 0;
}
.footer-brand p {
  color: rgba(255,255,255,.8);
  font-size: .95rem;
  margin-top: 12px;
  max-width: 340px;
}
.footer-title {
  color: #fff;
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 10px;
}
.footer-title::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 28px;
  height: 3px;
  background: var(--accent);
  border-radius: 3px;
}
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin-bottom: 10px; }
.footer-links a {
  color: rgba(255,255,255,.78);
  font-size: .9375rem;
  transition: all .25s ease;
}
.footer-links a:hover { color: var(--accent-light); text-decoration: none; padding-left: 4px; }
.footer-contact p {
  color: rgba(255,255,255,.78);
  font-size: .9375rem;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-contact i { color: var(--accent-light); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.12);
  padding: 18px 0;
  margin-top: 40px;
  text-align: center;
}
.footer-bottom p { color: rgba(255,255,255,.5); font-size: .875rem; }

/* Hero */
.page-hero {
  position: relative;
  padding: clamp(3.5rem, 7vw, 5.5rem) 0;
  background: linear-gradient(135deg, #EDF3F8 0%, #F7FAFC 60%, #E9F0F7 100%);
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity: .4;
  z-index: 0;
}
.page-hero .container { position: relative; z-index: 1; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #fff;
  border: 1px solid var(--line-color);
  color: var(--brand-primary);
  font-size: .875rem;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 100px;
  box-shadow: var(--shadow-xs);
  margin-bottom: 20px;
}
.page-hero-title {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
  max-width: 680px;
  margin-bottom: 16px;
}
.page-hero-title span { color: var(--brand-primary); }
.page-hero-subtitle {
  font-size: clamp(1.0625rem, 1.5vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 600px;
  line-height: 1.7;
  margin-bottom: 28px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stats {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
  margin-top: 44px;
  padding-top: 32px;
  border-top: 1px solid rgba(27, 109, 168, .15);
  max-width: 640px;
}
.hero-stats .stat-item { display: flex; align-items: center; gap: 10px; }
.hero-stats .stat-item i { font-size: 1.5rem; color: var(--brand-primary); }
.hero-stats .stat-num { font-size: 1.375rem; font-weight: 700; color: var(--text-primary); }
.hero-stats .stat-label { font-size: .875rem; color: var(--text-secondary); }

/* 通用板块 */
.section-padding { padding: clamp(3.5rem, 7vw, 5.5rem) 0; }
.section-head { margin-bottom: 44px; }
.section-head .section-tag {
  display: inline-block;
  background: var(--bg-soft);
  color: var(--brand-primary);
  font-size: .8125rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 12px;
  letter-spacing: .5px;
}
.section-head h2 {
  font-size: clamp(1.6rem, 2.6vw, 2.2rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}
.section-head p {
  color: var(--text-secondary);
  font-size: 1.0625rem;
  max-width: 640px;
}

/* 步骤流程 */
.steps-section { position: relative; }
.step-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: 1.75rem 1.5rem;
  height: 100%;
  border-top: 4px solid transparent;
  transition: all .3s ease;
  position: relative;
}
.step-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  border-top-color: var(--accent);
}
.step-number {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--bg-soft);
  color: var(--brand-primary);
  font-size: 1.375rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  transition: background .3s ease, color .3s ease;
}
.step-card:hover .step-number {
  background: var(--brand-primary);
  color: #fff;
}
.step-card h3 { font-size: 1.125rem; font-weight: 600; margin-bottom: 10px; }
.step-card p { font-size: .9375rem; color: var(--text-secondary); margin-bottom: 0; }

/* 知识卡 */
.knowledge-section {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: clamp(2.5rem, 5vw, 4rem) 0;
  border: 1px solid var(--line-color);
}
.knowledge-grid .card {
  border: none;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: 1.75rem 1.5rem;
  height: 100%;
  transition: all .3s ease;
  background: var(--bg-card);
  border-bottom: 3px solid transparent;
}
.knowledge-grid .card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  border-bottom-color: var(--brand-primary);
}
.knowledge-grid .card-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: var(--bg-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--brand-primary);
  margin-bottom: 16px;
  transition: background .3s ease, color .3s ease;
}
.knowledge-grid .card:hover .card-icon {
  background: var(--accent);
  color: #fff;
}
.knowledge-grid h3 { font-size: 1.125rem; font-weight: 600; margin-bottom: 10px; }
.knowledge-grid p { font-size: .9375rem; color: var(--text-secondary); margin-bottom: 16px; }
.knowledge-grid .card-link {
  font-size: .9375rem;
  font-weight: 600;
  color: var(--brand-primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.knowledge-grid .card-link:hover { color: var(--accent); gap: 8px; }

/* 实战分析 */
.practice-section { background: var(--bg-page); }
.practice-img-wrap {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  position: relative;
}
.practice-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 320px;
}
.practice-img-wrap .img-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  background: rgba(18, 42, 60, .85);
  color: #fff;
  font-size: .8125rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 100px;
  backdrop-filter: blur(4px);
}
.practice-list { list-style: none; padding: 0; margin: 0; }
.practice-list li {
  display: flex;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-color);
}
.practice-list li:last-child { border-bottom: none; }
.practice-list .p-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--bg-soft);
  color: var(--brand-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
}
.practice-list .p-text h4 { font-size: 1rem; font-weight: 600; margin-bottom: 4px; }
.practice-list .p-text p { font-size: .9063rem; color: var(--text-secondary); margin-bottom: 0; }

/* 误区提示 */
.tips-section { background: var(--bg-card); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); padding: clamp(2.5rem, 5vw, 4rem) 0; }
.tips-card {
  height: 100%;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #FFF8F0, #FFFDF9);
  border: 1px solid rgba(232, 135, 42, .25);
  padding: 1.75rem;
}
.tips-card .tips-icon {
  font-size: 1.75rem;
  color: var(--accent);
  margin-bottom: 12px;
}
.tips-card h3 { font-size: 1.125rem; font-weight: 600; margin-bottom: 8px; }
.tips-card p { font-size: .9375rem; color: var(--text-secondary); margin-bottom: 0; }
.tips-list-item {
  display: flex;
  gap: 12px;
  background: var(--bg-page);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  margin-bottom: 12px;
  border-left: 4px solid var(--brand-primary);
  transition: all .25s ease;
}
.tips-list-item:hover { box-shadow: var(--shadow-sm); border-left-color: var(--accent); transform: translateX(4px); }
.tips-list-item i {
  font-size: 1.25rem;
  color: var(--brand-primary);
  flex-shrink: 0;
  margin-top: 4px;
}
.tips-list-item h4 { font-size: 1rem; font-weight: 600; margin-bottom: 4px; }
.tips-list-item p { font-size: .875rem; color: var(--text-secondary); margin-bottom: 0; }

/* FAQ */
.faq-section { background: var(--bg-page); }
.accordion-item {
  border: none;
  border-radius: var(--radius-md) !important;
  box-shadow: var(--shadow-sm);
  margin-bottom: 16px;
  overflow: hidden;
  background: var(--bg-card);
}
.accordion-button {
  background: var(--bg-card);
  color: var(--text-primary);
  font-weight: 600;
  font-size: 1rem;
  padding: 18px 20px;
  transition: background .25s ease, color .25s ease;
  box-shadow: none !important;
}
.accordion-button:not(.collapsed) {
  background: var(--bg-soft);
  color: var(--brand-primary);
}
.accordion-button::after {
  background-image: none;
  content: '+';
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  line-height: 1;
  transition: transform .3s ease;
}
.accordion-button:not(.collapsed)::after {
  transform: rotate(45deg);
  background-image: none;
  color: var(--accent);
}
.accordion-body {
  padding: 0 20px 20px;
  color: var(--text-secondary);
  font-size: .9375rem;
  border-top: 1px solid var(--line-color);
  padding-top: 16px;
}

/* CTA */
.cta-section { position: relative; }
.cta-card {
  background: linear-gradient(135deg, var(--color-deep), var(--color-deep-2));
  border-radius: var(--radius-lg);
  padding: clamp(2.5rem, 5vw, 4rem);
  color: #fff;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.cta-card::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(232, 135, 42, .3), transparent 70%);
  border-radius: 50%;
}
.cta-card::after {
  content: '';
  position: absolute;
  bottom: -40px;
  left: 30%;
  width: 160px;
  height: 160px;
  background: radial-gradient(circle, rgba(79, 168, 160, .25), transparent 70%);
  border-radius: 50%;
}
.cta-card .container { position: relative; z-index: 1; }
.cta-card h2 { font-size: clamp(1.6rem, 2.6vw, 2.2rem); font-weight: 700; }
.cta-card p { color: rgba(255,255,255,.85); font-size: 1.0625rem; max-width: 560px; }
.cta-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 24px; }

/* 响应式 */
@media (max-width: 1199.98px) {
  .nav-link-item { padding: 8px 12px; font-size: .875rem; }
}
@media (max-width: 991.98px) {
  .nav-links, .nav-cta { display: none; }
  .custom-toggler { display: inline-flex; align-items: center; justify-content: center; }
  .page-hero { padding: 3rem 0; }
  .hero-stats { gap: 20px; margin-top: 28px; }
  .practice-list li { padding: 12px 0; }
  .cta-card { padding: 2rem 1.25rem; }
}
@media (max-width: 767.98px) {
  body { font-size: .9375rem; }
  .site-header { padding: 8px 0; }
  .nav-panel { padding: 10px 14px; border-radius: var(--radius-md); }
  .brand-logo { font-size: 1rem; }
  .brand-logo i { font-size: 1.1rem; }
  .page-hero-title { font-size: 1.6rem; }
  .page-hero-subtitle { font-size: 1rem; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .hero-stats { flex-direction: column; gap: 14px; }
  .section-padding { padding: 2.5rem 0; }
  .tips-list-item { flex-direction: column; gap: 6px; }
  .cta-actions .btn { width: 100%; justify-content: center; }
}
@media (max-width: 575.98px) {
  .container { padding-left: 16px; padding-right: 16px; }
  .section-head h2 { font-size: 1.4rem; }
  .step-card { padding: 1.25rem; }
  .knowledge-grid .card { padding: 1.25rem; }
  .practice-img-wrap img { min-height: 220px; }
  .footer-bottom p { font-size: .8125rem; }
}