/* roulang page: index */
:root {
  --color-primary: #2D6CDF;
  --color-primary-dark: #1A4DA3;
  --color-secondary: #E8B54A;
  --color-secondary-light: #F6D27A;
  --color-bg: #F5F7FB;
  --color-surface: #ffffff;
  --color-text: #1F2937;
  --color-muted: #5B6B7C;
  --color-border: #E2E8F0;
  --color-dark-bg: #0F1B2B;
  --color-dark-bg-soft: #14263B;
  --color-dark-text: #E5EDF6;
  --radius: 18px;
  --radius-sm: 12px;
  --shadow-sm: 0 6px 20px rgba(15,27,43,.06);
  --shadow-lg: 0 14px 30px rgba(15,27,43,.12);
  --transition: .25s ease;
  --container-max: 1320px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
h1,h2,h3,h4,h5,h6 { color: var(--color-text); font-weight: 700; line-height: 1.25; }
a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-primary-dark); }
img { max-width: 100%; height: auto; }
p { margin-top: 0; }
ul { padding-left: 0; list-style: none; margin: 0; }
.container { max-width: var(--container-max); }
.btn { border-radius: 999px; padding: .62rem 1.4rem; font-weight: 600; border: 2px solid transparent; transition: all var(--transition); }
.btn:focus-visible, .form-control:focus-visible, .form-control:focus, .form-select:focus {
  outline: 3px solid rgba(232,181,74,.45);
  outline-offset: 2px;
  box-shadow: none !important;
  border-color: var(--color-primary) !important;
}
.btn-primary {
  background: var(--color-secondary);
  border-color: var(--color-secondary);
  color: #20242b;
}
.btn-primary:hover, .btn-primary:focus {
  background: var(--color-secondary-light);
  border-color: var(--color-secondary-light);
  color: #111827;
  transform: translateY(-2px);
}
.btn-outline-light {
  border-color: rgba(255,255,255,.7);
  color: #ffffff;
}
.btn-outline-light:hover {
  background: rgba(255,255,255,.1);
  border-color: #fff;
  color: #fff;
}
.btn-outline-primary {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: transparent;
}
.btn-outline-primary:hover {
  background: var(--color-primary);
  color: #fff;
  transform: translateY(-2px);
}
.btn-dark-ghost {
  border-color: rgba(15,27,43,.2);
  color: var(--color-text);
  background: #fff;
}
.btn-dark-ghost:hover {
  border-color: var(--color-text);
  background: var(--color-text);
  color: #fff;
}
.badge {
  border-radius: 999px;
  font-weight: 500;
  padding: .42em .85em;
  line-height: 1.2;
}
.section { padding: clamp(3.5rem, 6vw, 5.5rem) 0; }
.section-head { margin-bottom: 2.6rem; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-size: .85rem;
  font-weight: 600;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: .55rem;
}
.eyebrow::before {
  content: "";
  width: 28px;
  height: 3px;
  border-radius: 999px;
  background: var(--color-secondary);
  display: inline-block;
}
.section-title { font-size: clamp(1.6rem, 2.2vw, 2.2rem); font-weight: 800; margin-bottom: .6rem; }
.section-desc { font-size: 1rem; color: var(--color-muted); max-width: 780px; line-height: 1.8; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1050;
  background: var(--color-dark-bg);
  min-height: 72px;
  box-shadow: 0 4px 18px rgba(15,27,43,.28);
}
.site-header .navbar-brand {
  display: flex;
  align-items: center;
  font-size: 1.28rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: .02em;
}
.site-header .navbar-brand .brand-icon {
  width: 38px;
  height: 38px;
  margin-right: .55rem;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--color-secondary), #C8902F);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #20242b;
  font-size: 1.08rem;
}
.site-header .navbar-brand:hover { color: var(--color-secondary-light); }
@media (min-width: 992px) {
  .site-header .navbar { min-height: 72px; }
}
.navbar-nav .nav-link {
  color: #DCE6F0 !important;
  font-size: .96rem;
  font-weight: 500;
  padding: .55rem 1rem !important;
  border-bottom: 2px solid transparent;
  transition: color var(--transition), border-color var(--transition);
}
.navbar-nav .nav-link:hover { color: #fff !important; }
.navbar-nav .nav-link.active, .navbar-nav .nav-link[aria-current="page"] {
  color: var(--color-secondary) !important;
  border-bottom-color: var(--color-secondary);
}
.navbar-toggler { border-color: rgba(255,255,255,.3); padding: .25rem .55rem; }
.navbar-dark .navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 1%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}
.navbar-collapse { padding: .8rem 0; }
@media (max-width: 991.98px) {
  .navbar-collapse { background: var(--color-dark-bg-soft); border-radius: 16px; padding: .8rem 1rem; margin-top: .5rem; }
}
.btn-nav {
  background: var(--color-secondary);
  border-radius: 999px;
  color: #20242b;
  font-weight: 700;
  padding: .55rem 1.2rem;
  transition: background var(--transition), box-shadow var(--transition);
}
.btn-nav:hover { background: var(--color-secondary-light); color: #111827; box-shadow: 0 6px 18px rgba(232,181,74,.3); }

/* Hero */
.hero-section {
  position: relative;
  overflow: hidden;
  background-image: linear-gradient(rgba(255,255,255,.92), rgba(245,247,251,.96)), url("/assets/images/backpic/back-1.jpg");
  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
  border-bottom: 1px solid var(--color-border);
}
.flash-bar {
  position: relative;
  z-index: 2;
  background: linear-gradient(92deg, #F1C75B 0%, #E8B54A 80%);
  color: #2B2B2B;
  padding: .65rem 0;
  font-size: .92rem;
}
.flash-bar-inner {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: .6rem 1rem;
}
.flash-bar .flash-icon {
  width: 26px;
  height: 26px;
  background: #1F2937;
  color: #F5C85C;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: .85rem;
}
.flash-timer {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  background: rgba(31,41,55,.12);
  border-radius: 999px;
  padding: .25rem .8rem;
  font-weight: 600;
  font-size: .9rem;
}
.flash-timer .time-cell {
  background: #1F2937;
  color: #fff;
  border-radius: 7px;
  padding: .12rem .4rem;
  font-variant-numeric: tabular-nums;
  min-width: 30px;
  text-align: center;
}
.hero-main { padding: clamp(3rem, 6vw, 5rem) 0 3.5rem; }
.hero-tag {
  display: inline-block;
  background: #fff;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  border-radius: 999px;
  padding: .4rem 1rem;
  color: var(--color-primary);
  font-size: .87rem;
  font-weight: 600;
  margin-bottom: 1.2rem;
}
.hero-title { font-size: clamp(1.9rem, 3.4vw, 2.85rem); font-weight: 800; line-height: 1.2; margin-bottom: 1rem; }
.hero-title mark {
  background: linear-gradient(120deg, rgba(232,181,74,.3), rgba(232,181,74,.16));
  color: var(--color-primary-dark);
  border-radius: 8px;
  padding: .08rem .28rem;
}
.hero-sub { font-size: 1rem; color: var(--color-muted); line-height: 1.8; max-width: 660px; margin-bottom: 1.8rem; }
.hero-btns { display: flex; flex-wrap: wrap; gap: .9rem; margin-bottom: 1.6rem; }
.hero-badges { display: flex; flex-wrap: wrap; gap: .55rem; }
.hero-badge {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  color: var(--color-muted);
  font-size: .82rem;
  padding: .42rem .85rem;
  display: inline-flex;
  align-items: center;
  gap: .35rem;
}
.hero-badge i { color: var(--color-primary); }
.hero-metrics {
  margin-top: 1.8rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1.6rem;
}
.hero-metric strong { display: block; font-size: 1.45rem; font-weight: 800; color: var(--color-text); }
.hero-metric span { font-size: .84rem; color: var(--color-muted); }

/* Product card / main deal */
.flash-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 22px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  max-width: 510px;
  margin-left: auto;
  margin-right: auto;
}
.flash-card-head {
  background: linear-gradient(90deg, #1F2937, #0F1B2B);
  color: #fff;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: .7rem 1.2rem;
  font-size: .9rem;
  font-weight: 600;
}
.flash-card-head .trend {
  background: var(--color-secondary);
  color: #1F2937;
  border-radius: 999px;
  padding: .18rem .65rem;
  font-size: .78rem;
}
.flash-card .card-img { display: block; width: 100%; height: 260px; object-fit: cover; }
.flash-card-body { padding: 1.2rem 1.3rem 1.4rem; }
.flash-card-title { font-size: 1.13rem; font-weight: 800; margin-bottom: .25rem; }
.flash-meta { color: var(--color-muted); font-size: .85rem; margin-bottom: .95rem; }
.flash-spec {
  display: flex;
  flex-wrap: wrap;
  gap: .55rem;
  margin-bottom: 1.1rem;
}
.spec-chip {
  background: #F1F5FB;
  color: var(--color-text);
  border-radius: 9px;
  font-size: .78rem;
  padding: .3rem .65rem;
  border: 1px solid var(--color-border);
}
.flash-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.flash-actions .btn-gold {
  background: var(--color-secondary);
  color: #1F2937;
  border-radius: 999px;
  font-weight: 700;
  border: 0;
  padding: .65rem 1.6rem;
  transition: background var(--transition), transform var(--transition);
}
.flash-actions .btn-gold:hover { background: var(--color-secondary-light); transform: translateY(-2px); }
.flash-actions small { color: var(--color-muted); font-size: .8rem; }

/* Category entry */
.category-entry { background: #fff; }
.cat-card {
  position: relative;
  display: block;
  border-radius: 18px;
  overflow: hidden;
  height: 230px;
  border: 1px solid var(--color-border);
  transition: box-shadow var(--transition), transform var(--transition);
  isolation: isolate;
}
.cat-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.cat-card img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; z-index: -2; }
.cat-card::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(15,27,43,0) 20%, rgba(15,27,43,.55) 100%); z-index: -1; transition: background var(--transition); }
.cat-card.dark-card::after { background: linear-gradient(180deg, rgba(15,27,43,.05), rgba(15,27,43,.84)); }
.cat-body { position: absolute; left: 1.1rem; right: 1.1rem; bottom: 1rem; color: #fff; }
.cat-body h3 { color: #fff; font-weight: 700; font-size: 1.18rem; margin-bottom: .2rem; }
.cat-body p { color: rgba(255,255,255,.85); font-size: .82rem; margin-bottom: .55rem; }
.cat-link {
  color: #fff !important;
  font-size: .85rem;
  font-weight: 600;
  display: inline-flex;
  gap: .4rem;
  align-items: center;
  background: rgba(255,255,255,.14);
  border-radius: 999px;
  padding: .25rem .8rem;
  transition: background var(--transition);
}
.cat-link:hover { background: var(--color-secondary); color: #111827 !important; }

/* Resource section */
.resource-section { background: var(--color-bg); }
.resource-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
  height: 100%;
}
.resource-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.resource-card .rc-img { display: block; width: 100%; height: 210px; object-fit: cover; background: #E8EDF5; }
.resource-card .rc-body { padding: 1.3rem 1.4rem 1.5rem; }
.rc-tags { display: flex; flex-wrap: wrap; gap: .45rem; margin-bottom: .7rem; }
.rc-tags .badge { font-size: .75rem; }
.badge-gold { background: #FDF3D7; color: #8A6108; }
.badge-blue { background: #E9F0FF; color: var(--color-primary-dark); }
.rc-title { font-size: 1.08rem; font-weight: 700; margin-bottom: .45rem; }
.rc-title a { color: var(--color-text); }
.rc-title a:hover { color: var(--color-primary); }
.rc-desc { color: var(--color-muted); font-size: .9rem; margin-bottom: 1rem; }
.rc-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: .85rem;
  color: var(--color-muted);
  border-top: 1px dashed var(--color-border);
  padding-top: .8rem;
}
.rc-footer .hot { color: #D97706; font-weight: 600; }
.rc-footer a { font-weight: 600; font-size: .85rem; }

/* News */
.news-section { background: #fff; }
.list-group-news { border: 1px solid var(--color-border); border-radius: 16px; overflow: hidden; background: #fff; }
.list-group-item {
  border: 0;
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 1.2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .8rem;
  transition: background var(--transition);
}
.list-group-item:last-child { border-bottom: 0; }
.list-group-item:hover { background: #F8FAFE; }
.news-link { display: flex; align-items: center; gap: .7rem; min-width: 0; }
.news-cat { color: var(--color-primary); font-size: .85rem; white-space: nowrap; font-weight: 600; }
.news-title { color: var(--color-text); font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.news-title:hover { color: var(--color-primary); }
.news-date { color: var(--color-muted); font-size: .8rem; white-space: nowrap; }
.side-panel {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 18px;
  padding: 1.4rem;
}
.side-panel-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 1.1rem; display: flex; align-items: center; gap: .4rem; }
.side-panel-title i { color: var(--color-secondary); }
.top-rank { counter-reset: rank; }
.top-rank li {
  counter-increment: rank;
  display: flex;
  align-items: baseline;
  gap: .75rem;
  font-size: .92rem;
  padding: .52rem 0;
  border-bottom: 1px dashed var(--color-border);
}
.top-rank li::before { content: counter(rank, decimal-leading-zero); font-weight: 700; color: var(--color-primary); font-size: .85rem; }
.top-rank li a { color: var(--color-text); }
.top-rank li a:hover { color: var(--color-primary); }
.tag-cloud { display: flex; flex-wrap: wrap; gap: .5rem; }
.tag-cloud a {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: .8rem;
  color: var(--color-muted);
  padding: .3rem .8rem;
}
.tag-cloud a:hover { border-color: var(--color-primary); color: var(--color-primary); }

/* Download guide */
.download-section {
  background-image: linear-gradient(rgba(15,27,43,.87), rgba(15,27,43,.7)), url("/assets/images/backpic/back-2.jpg");
  background-size: cover;
  background-position: center;
  color: #fff;
}
.download-section .section-title, .download-section h2, .download-section h3 { color: #fff; }
.download-section .section-desc { color: rgba(229,237,246,.8); }
.tool-card {
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 18px;
  padding: 1.4rem;
  transition: background var(--transition), transform var(--transition);
  height: 100%;
}
.tool-card:hover { background: rgba(255,255,255,.15); transform: translateY(-4px); }
.tool-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: var(--color-secondary);
  color: #111827;
  font-size: 1.3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: .85rem;
}
.tool-card h3 { font-size: 1.02rem; font-weight: 700; margin-bottom: .35rem; }
.tool-card p { margin-bottom: .85rem; color: rgba(255,255,255,.7); font-size: .88rem; }
.tool-status { font-size: .78rem; color: #b9f0c8; }
.download-buttons { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 1.4rem; }

/* Guide / 观影指南 */
.guide-section { background: var(--color-bg); }
.guide-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 20px;
  padding: 2rem 1.6rem;
  height: 100%;
  transition: box-shadow var(--transition), transform var(--transition);
  position: relative;
}
.guide-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-6px); }
.guide-number {
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: .08em;
  color: var(--color-secondary);
  background: #FDF3D7;
  border-radius: 999px;
  display: inline-block;
  padding: .28rem .9rem;
  margin-bottom: 1.2rem;
}
.guide-card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: .6rem; }
.guide-card p { color: var(--color-muted); font-size: .92rem; margin-bottom: 0; }

/* stats strip */
.stats-section { background: var(--color-dark-bg); }
.stats-section .stat-item { text-align: center; padding: 1.4rem .5rem; }
.stat-item .stat-icon { font-size: 1.6rem; color: var(--color-secondary); margin-bottom: .3rem; display: block; }
.stat-item strong { font-size: clamp(1.8rem, 2.6vw, 2.5rem); color: #fff; font-weight: 800; line-height: 1.2; display: block; margin-bottom: .2rem; }
.stat-item span { color: #9FB0C3; font-size: .92rem; }

/* FAQ */
.faq-section { background: #fff; }
.faq-panel { border: 1px solid var(--color-border); border-radius: var(--radius); background: #fff; overflow: hidden; box-shadow: var(--shadow-sm); }
.accordion-item { border: 0; border-bottom: 1px solid var(--color-border) !important; background: transparent; }
.accordion-item:last-child { border-bottom: 0 !important; }
.accordion-button {
  background: #fff;
  color: var(--color-text);
  font-weight: 600;
  font-size: 1rem;
  padding: 1.1rem 1.4rem;
  box-shadow: none !important;
}
.accordion-item:has(.accordion-button:not(.collapsed)) { background: #F8FAFE; }
.accordion-button:not(.collapsed), .accordion-item:has(.accordion-button:not(.collapsed)) .accordion-button { background: #F8FAFE; color: var(--color-text); }
.accordion-button:focus-visible { outline: 3px solid rgba(232,181,74,.45); outline-offset: -3px; }
.accordion-button::after { background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%232D6CDF'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e"); }
.accordion-body { background: #F8FAFE; color: var(--color-muted); font-size: .94rem; padding: .4rem 1.4rem 1.4rem; line-height: 1.8; }

/* CTA strip */
.cta-strip {
  position: relative;
  background-image: linear-gradient(rgba(15,27,43,.82), rgba(15,27,43,.78)), url("/assets/images/backpic/back-4.jpg");
  background-size: cover;
  background-position: center;
  border-radius: 26px;
  padding: clamp(2.2rem, 5vw, 4rem) clamp(1.5rem, 4vw, 4rem);
  text-align: center;
}
.cta-strip h2 { color: #fff; font-weight: 800; font-size: clamp(1.6rem, 2.6vw, 2.2rem); margin-bottom: .8rem; }
.cta-strip p { color: rgba(255,255,255,.75); max-width: 680px; margin: 0 auto 1.6rem; }
.cta-strip .btn-outline-light { border-width: 2px; }

/* Footer */
.site-footer {
  background: var(--color-dark-bg);
  color: #A9B7C7;
  padding: 3.6rem 0 0;
}
.site-footer h4 { color: #fff; font-size: 1rem; font-weight: 700; margin-bottom: 1.1rem; }
.footer-brand { font-size: 1.3rem; font-weight: 800; color: #fff; display: flex; align-items: center; gap: .5rem; margin-bottom: .8rem; }
.footer-brand .brand-icon {
  width: 34px; height: 34px;
  background: var(--color-secondary);
  border-radius: 10px;
  color: #111;
  display: inline-flex;
  justify-content: center;
  align-items: center;
}
.site-footer a { color: #A9B7C7; }
.site-footer a:hover { color: var(--color-secondary); }
.footer-links li { margin-bottom: .5rem; font-size: .9rem; }
.footer-links i { font-size: .8rem; color: var(--color-secondary); margin-right: .3rem; }
.footer-disclaimer {
  border-top: 1px solid rgba(255,255,255,.1);
  margin-top: 2.6rem;
  padding: 1.4rem 0 1.2rem;
  font-size: .82rem;
  color: #8FA3B8;
  line-height: 1.8;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 1.1rem 0;
  font-size: .82rem;
  color: #7A8DA0;
}
.footer-bottom .container { display: flex; justify-content: space-between; flex-wrap: wrap; gap: .5rem; }

/* Back to top */
.to-top {
  position: fixed;
  right: 18px;
  bottom: 22px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  border: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: all var(--transition);
}
.to-top.show { opacity: 1; pointer-events: auto; transform: translateY(0); }
.to-top:hover { background: var(--color-primary-dark); }

/* Responsive */
@media (max-width: 991.98px) {
  .flash-timer { margin-left: 0; }
  .hero-metrics { gap: 1.2rem; }
  .hero-main { padding-top: 2.5rem; }
  .flash-card { max-width: 100%; }
}
@media (max-width: 767.98px) {
  .section { padding: 3rem 0; }
  .section-desc { font-size: .92rem; }
  .rc-footer { flex-wrap: wrap; gap: .5rem; }
  .list-group-item { flex-direction: column; align-items: flex-start; gap: .2rem; }
  .news-title { white-space: normal; }
  .stat-item { padding: 1rem .5rem; }
  .footer-bottom .container { justify-content: center; text-align: center; }
}
@media (max-width: 575.98px) {
  .hero-title { font-size: 1.65rem; }
  .btn { padding: .55rem 1.1rem; font-size: .9rem; }
  .flash-card .card-img { height: 220px; }
  .hero-btns .btn { width: 100%; }
  .resource-card .rc-img { height: 180px; }
}

/* roulang page: category1 */
:root {
 --color-primary: #2D6CDF;
 --color-primary-dark: #1A4DA3;
 --color-secondary: #E8B54A;
 --color-secondary-light: #F6D27A;
 --color-bg: #F5F7FB;
 --color-surface: #ffffff;
 --color-text: #1F2937;
 --color-muted: #5B6B7C;
 --color-border: #E2E8F0;
 --color-dark-bg: #0F1B2B;
 --color-dark-bg-soft: #14263B;
 --color-dark-text: #E5EDF6;
 --radius: 18px;
 --radius-sm: 12px;
 --shadow-sm: 0 6px 20px rgba(15,27,43,.06);
 --shadow-lg: 0 14px 30px rgba(15,27,43,.12);
 --transition: .25s ease;
 --container-max: 1320px;
}
html { scroll-behavior: smooth; }
body {
 margin: 0;
 font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
 background: var(--color-bg);
 color: var(--color-text);
 line-height: 1.7;
 -webkit-font-smoothing: antialiased;
}
a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-primary-dark); }
img { max-width: 100%; height: auto; }
ul, ol { padding-left: 0; list-style: none; margin-bottom: 0; }
.container { max-width: var(--container-max); }
.btn { border-radius: 999px; padding: .62rem 1.4rem; font-weight: 600; border: 2px solid transparent; transition: all var(--transition); }
.btn:focus-visible, .form-control:focus-visible, .form-control:focus, .form-select:focus {
 outline: 3px solid rgba(232,181,74,.45);
 outline-offset: 2px;
 box-shadow: none !important;
 border-color: var(--color-primary) !important;
}
.btn-primary {
 background: var(--color-secondary);
 border-color: var(--color-secondary);
 color: #20242b;
}
.btn-primary:hover, .btn-primary:focus {
 background: var(--color-secondary-light);
 border-color: var(--color-secondary-light);
 color: #111827;
 transform: translateY(-2px);
}
.btn-outline-light {
 border-color: rgba(255,255,255,.7);
 color: #ffffff;
}
.btn-outline-light:hover {
 background: rgba(255,255,255,.1);
 border-color: #fff;
 color: #fff;
}
.btn-outline-primary {
 border-color: var(--color-primary);
 color: var(--color-primary);
 background: transparent;
}
.btn-outline-primary:hover {
 background: var(--color-primary);
 color: #fff;
 transform: translateY(-2px);
}
.btn-dark-ghost {
 border-color: rgba(15,27,43,.2);
 color: var(--color-text);
 background: #fff;
}
.btn-dark-ghost:hover {
 border-color: var(--color-text);
 background: var(--color-text);
 color: #fff;
}
.badge { border-radius: 999px; font-weight: 500; padding: .42em .85em; line-height: 1.2; }
.section { padding: clamp(3rem, 5.6vw, 5rem) 0; }
.section-head { margin-bottom: 2.4rem; }
.eyebrow {
 display: inline-flex;
 align-items: center;
 gap: .5rem;
 font-size: .85rem;
 font-weight: 600;
 letter-spacing: .16em;
 text-transform: uppercase;
 color: var(--color-primary);
 margin-bottom: .55rem;
}
.eyebrow::before {
 content: "";
 width: 28px;
 height: 3px;
 border-radius: 999px;
 background: var(--color-secondary);
 display: inline-block;
}
.section-title { font-size: clamp(1.6rem, 2.2vw, 2.2rem); font-weight: 800; margin-bottom: .6rem; }
.section-desc { font-size: 1rem; color: var(--color-muted); max-width: 780px; line-height: 1.8; }

/* Header */
.site-header {
 position: sticky;
 top: 0;
 z-index: 1080;
 background: var(--color-dark-bg);
 min-height: 72px;
 box-shadow: 0 4px 18px rgba(15,27,43,.28);
}
.site-header .navbar-brand {
 display: flex;
 align-items: center;
 font-size: 1.28rem;
 font-weight: 800;
 color: #fff;
 letter-spacing: .02em;
}
.site-header .navbar-brand .brand-icon {
 width: 38px;
 height: 38px;
 margin-right: .55rem;
 border-radius: 12px;
 background: linear-gradient(135deg, var(--color-secondary), #C8902F);
 display: inline-flex;
 align-items: center;
 justify-content: center;
 color: #20242b;
 font-size: 1.08rem;
}
.site-header .navbar-brand:hover { color: var(--color-secondary-light); }
.site-header .navbar { min-height: 72px; }
.navbar-nav .nav-link {
 color: #DCE6F0 !important;
 font-size: .96rem;
 font-weight: 500;
 padding: .55rem 1rem !important;
 border-bottom: 2px solid transparent;
 transition: color var(--transition), border-color var(--transition);
}
.navbar-nav .nav-link:hover { color: #fff !important; }
.navbar-nav .nav-link.active, .navbar-nav .nav-link[aria-current="page"] {
 color: var(--color-secondary) !important;
 border-bottom-color: var(--color-secondary);
}
.navbar-toggler { border-color: rgba(255,255,255,.3); padding: .25rem .55rem; }
.navbar-dark .navbar-toggler-icon {
 background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 1%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}
.navbar-collapse { background: var(--color-dark-bg-soft); border-radius: 16px; padding: .8rem 1rem; margin-top: .5rem; }
.btn-nav { background: var(--color-secondary); border-radius: 999px; color: #20242b; font-weight: 700; padding: .55rem 1.2rem; transition: background var(--transition), box-shadow var(--transition); }
.btn-nav:hover { background: var(--color-secondary-light); color: #111827; box-shadow: 0 6px 18px rgba(232,181,74,.3); }

/* Category Hero */
.category-hero {
 position: relative;
 overflow: hidden;
 padding: clamp(2.6rem, 4.5vw, 4rem) 0;
 background-image: linear-gradient(rgba(11,24,42,.92), rgba(9,19,33,.82)), url("/assets/images/backpic/back-2.jpg");
 background-size: cover;
 background-position: center;
 color: #fff;
}
.category-hero .breadcrumb { background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.15); backdrop-filter: blur(4px); padding: .45rem 1rem; border-radius: 999px; display: inline-flex; font-size: .85rem; }
.category-hero .breadcrumb a { color: #C7D5E4; }
.category-hero .breadcrumb a:hover { color: var(--color-secondary-light); }
.category-hero .breadcrumb-item + .breadcrumb-item::before { color: #718196; }
.breadcrumb-item.active { color: var(--color-secondary); }
.category-hero-title { font-size: clamp(1.9rem, 3vw, 2.6rem); font-weight: 800; margin: 1rem 0 .7rem; line-height: 1.25; }
.category-hero-title span { background: linear-gradient(120deg, rgba(232,181,74,.4), rgba(232,181,74,.2)); border-radius: 12px; padding: .05rem .25rem; color: var(--color-secondary-light); }
.category-hero-desc { max-width: 820px; color: #C9D6E4; font-size: 1rem; margin-bottom: 1.4rem; }
.category-search { max-width: 620px; }
.category-search .form-control {
 border-radius: 999px 0 0 999px;
 border: 0;
 padding: .8rem 1.2rem;
 font-size: .95rem;
 color: var(--color-text);
 background: #fff;
}
.category-search .btn {
 border-radius: 0 999px 999px 0;
 background: var(--color-secondary);
 color: #20242b;
 border: 0;
 font-weight: 700;
 padding: .8rem 1.6rem;
}
.category-search .btn:hover { background: var(--color-secondary-light); }
.hero-badge { display: inline-flex; align-items: center; gap: .4rem; border: 1px solid var(--color-border); background: #fff; border-radius: 999px; padding: .4rem .85rem; font-size: .85rem; color: var(--color-text); font-weight: 500; }
.category-hero .hero-badge { background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.18); color: #E5EDF6; }

/* Info stat strip */
.stat-strip { background: #fff; border-bottom: 1px solid var(--color-border); box-shadow: var(--shadow-sm); }
.stat-strip .stat-item { text-align: center; padding: 1.3rem .7rem; }
.stat-strip .stat-num { font-size: clamp(1.5rem, 2vw, 2rem); font-weight: 800; color: var(--color-primary-dark); }
.stat-strip .stat-num em { font-style: normal; color: var(--color-secondary); }
.stat-strip .stat-label { font-size: .85rem; color: var(--color-muted); }

/* Zone cards */
.zone-card {
 border-radius: var(--radius);
 overflow: hidden;
 background: #fff;
 box-shadow: var(--shadow-sm);
 height: 100%;
 display: flex;
 flex-direction: column;
 border: 1px solid var(--color-border);
 transition: transform var(--transition), box-shadow var(--transition);
}
.zone-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.zone-card .zone-img { aspect-ratio: 4/3; overflow: hidden; background: #e9eef5; }
.zone-card .zone-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .45s ease; }
.zone-card:hover .zone-img img { transform: scale(1.03); }
.zone-card .zone-body { padding: 1.4rem 1.5rem 1.6rem; flex: 1; display: flex; flex-direction: column; }
.zone-card .zone-title { font-size: 1.15rem; font-weight: 700; margin-bottom: .5rem; }
.zone-card .zone-desc { color: var(--color-muted); font-size: .9rem; flex: 1; }
.zone-card .zone-link { margin-top: 1rem; font-weight: 600; color: var(--color-primary); display: inline-flex; align-items: center; gap: .3rem; }
.zone-card-dark {
 background: var(--color-dark-bg);
 color: var(--color-dark-text);
 border-color: var(--color-dark-bg);
}
.zone-card-dark .zone-title { color: #fff; }
.zone-card-dark .zone-desc { color: #9FB0C2; }
.zone-card-dark .zone-link { color: var(--color-secondary); }

/* Archive list */
.archive-wrap .filter-scroll { display: flex; flex-wrap: wrap; gap: .55rem; margin-bottom: 1.8rem; }
.filter-scroll .btn-filter {
 border-radius: 999px;
 border: 1px solid var(--color-border);
 background: #fff;
 color: var(--color-text);
 font-size: .88rem;
 padding: .4rem 1rem;
 transition: all var(--transition);
}
.filter-scroll .btn-filter:hover { border-color: var(--color-primary); color: var(--color-primary); background: #F0F5FE; }
.filter-scroll .btn-filter.active { background: var(--color-primary); border-color: var(--color-primary); color: #fff; font-weight: 600; }
.archive-card { background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius); box-shadow: var(--shadow-sm); overflow: hidden; margin-bottom: 1.1rem; transition: box-shadow var(--transition), transform var(--transition); }
.archive-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }
.archive-card .row { margin: 0; }
.archive-card .thumb { position: relative; padding: 0; overflow: hidden; background: #dfe6ee; aspect-ratio: 16/10; }
.archive-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.archive-card:hover .thumb img { transform: scale(1.04); }
.archive-card .thumb .time-badge { position: absolute; left: .8rem; bottom: .8rem; background: rgba(15,27,43,.78); color: #fff; font-size: .75rem; padding: .2rem .7rem; border-radius: 999px; backdrop-filter: blur(4px); }
.archive-card .card-info { padding: 1.2rem 1.3rem; display: flex; flex-direction: column; justify-content: center; }
.archive-card .card-title { font-size: 1.06rem; font-weight: 700; margin-bottom: .3rem; line-height: 1.5; }
.archive-card .card-title a { color: var(--color-text); }
.archive-card .card-title a:hover { color: var(--color-primary); }
.archive-card .card-brief { color: var(--color-muted); font-size: .88rem; margin-bottom: .7rem; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.archive-card .meta { font-size: .8rem; color: #94A3B8; display: flex; flex-wrap: wrap; gap: .8rem; }
.archive-card .meta i { margin-right: .15rem; }
.card-badges { margin-bottom: .55rem; display: flex; flex-wrap: wrap; gap: .4rem; }
.badge-soft-gold { background: #FDF3D7; color: #8A6525; }
.badge-soft-blue { background: #EAF1FE; color: var(--color-primary-dark); }

/* Sidebar */
.sidebar-box { background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius); box-shadow: var(--shadow-sm); padding: 1.4rem; margin-bottom: 1.4rem; }
.sidebar-box .box-title { font-size: 1.1rem; font-weight: 800; margin-bottom: 1rem; display: flex; align-items: center; gap: .5rem; }
.sidebar-box .box-title i { font-size: 1.1rem; color: var(--color-secondary); }
.hot-list { counter-reset: hot-index; }
.hot-list li { counter-increment: hot-index; display: flex; align-items: center; gap: .7rem; padding: .62rem .2rem; border-bottom: 1px dashed #EDF1F7; }
.hot-list li:last-child { border-bottom: 0; }
.hot-list li::before { content: counter(hot-index, decimal-leading-zero); font-weight: 800; font-size: .9rem; color: var(--color-secondary); min-width: 28px; }
.hot-list li:nth-child(-n+3)::before { color: var(--color-primary); }
.hot-list .hot-name { flex: 1; font-size: .9rem; color: var(--color-text); line-height: 1.4; }
.hot-list .hot-name a { color: var(--color-text); text-overflow: ellipsis; overflow: hidden; white-space: nowrap; display: block; }
.hot-list .hot-name a:hover { color: var(--color-primary); }
.hot-list .hot-heat { font-size: .76rem; color: #94A3B8; white-space: nowrap; }
.tag-cloud { display: flex; flex-wrap: wrap; gap: .5rem; }
.tag-cloud .tag-item { font-size: .8rem; background: #F2F5FA; border: 1px solid transparent; border-radius: 999px; padding: .25rem .7rem; color: #506273; transition: all var(--transition); }
.tag-cloud .tag-item:hover { background: #EAF1FE; border-color: var(--color-primary); color: var(--color-primary); }
.ad-box { aspect-ratio: 1/1; display: flex; align-items: center; justify-content: center; border: 2px dashed #D4DDE8; background: #F9FBFF; border-radius: var(--radius); color: #A6B3C4; font-size: .85rem; letter-spacing: .05em; font-weight: 500; }

/* Pagination */
.pagination { gap: .35rem; }
.pagination .page-link { border-radius: 50% !important; width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; border: 1px solid var(--color-border); color: var(--color-text); font-size: .88rem; background: #fff; font-weight: 500; }
.pagination .page-link:hover { background: #EAF1FE; border-color: var(--color-primary); color: var(--color-primary); }
.pagination .page-item.active .page-link { background: var(--color-primary); border-color: var(--color-primary); color: #fff; }
.pagination .page-item.disabled .page-link { background: #F5F7FB; color: #C1CBD7; }
.pagination .page-item:first-child .page-link, .pagination .page-item:last-child .page-link { border-radius: 999px !important; width: auto; padding: 0 1rem; }

/* Guide / compare */
.guide-card { border-radius: var(--radius); border: 1px solid var(--color-border); background: #fff; padding: 1.8rem; height: 100%; box-shadow: var(--shadow-sm); }
.guide-card.bg-darkish { background: var(--color-dark-bg); border-color: var(--color-dark-bg); color: var(--color-dark-text); }
.guide-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 1rem; }
.guide-card.bg-darkish h3 { color: #fff; }
.guide-card ul li { position: relative; padding-left: 1.7rem; margin-bottom: .75rem; color: var(--color-text); font-size: .92rem; line-height: 1.7; }
.guide-card ul li::before { position: absolute; left: 0; top: 0; font-family: "bootstrap-icons"; content: "\F26B"; color: var(--color-primary); }
.guide-card.bg-darkish ul li { color: #C6D5E4; }
.guide-card.bg-darkish ul li::before { color: var(--color-secondary); }

/* FAQ */
.faq-wrap .accordion-item { border: 0; margin-bottom: .8rem; border-radius: var(--radius) !important; overflow: hidden; box-shadow: var(--shadow-sm); background: #fff; border: 1px solid var(--color-border); }
.faq-wrap .accordion-button { background: #fff; color: var(--color-text); font-weight: 600; font-size: .96rem; padding: 1.15rem 1.35rem; box-shadow: none; border-radius: var(--radius) !important; }
.faq-wrap .accordion-button:not(.collapsed) { background: #F8FAFE; color: var(--color-primary-dark); }
.faq-wrap .accordion-button::after { background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%232D6CDF'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e"); }
.faq-wrap .accordion-body { padding: 1.1rem 1.35rem 1.35rem; color: var(--color-muted); font-size: .92rem; line-height: 1.8; border-top: 1px dashed rgba(226,232,240,.8); }

/* CTA */
.cta-block { position: relative; overflow: hidden; border-radius: 24px; background-image: linear-gradient(rgba(10,21,38,.86), rgba(10,21,38,.9)), url("/assets/images/backpic/back-6.jpg"); background-size: cover; background-position: center; color: #fff; padding: clamp(2.2rem, 5vw, 4rem) clamp(1.2rem, 4vw, 3.5rem); text-align: center; border: 1px solid rgba(255,255,255,.1); }

/* Footer */
.site-footer { background: var(--color-dark-bg); color: #A7B7C8; padding: 3.5rem 0 0; }
.site-footer .footer-brand { display: flex; align-items: center; font-size: 1.25rem; color: #fff; font-weight: 800; margin-bottom: .6rem; }
.site-footer .footer-brand .brand-icon { width: 34px; height: 34px; border-radius: 10px; background: linear-gradient(135deg, var(--color-secondary), #C8902F); display: inline-flex; align-items: center; justify-content: center; color: #20242b; font-size: 1rem; margin-right: .5rem; }
.site-footer h4 { font-size: .95rem; color: #fff; font-weight: 700; margin-bottom: 1rem; letter-spacing: .06em; }
.site-footer .footer-links li { margin-bottom: .55rem; }
.site-footer .footer-links a { color: #A7B7C8; font-size: .88rem; transition: all var(--transition); display: inline-flex; align-items: center; gap: .35rem; }
.site-footer .footer-links a:hover { color: var(--color-secondary-light); transform: translateX(3px); }
.site-footer .footer-links i { font-size: .8rem; color: #5E748C; }
.footer-disclaimer { margin-top: 1rem; border-top: 1px solid rgba(255,255,255,.08); padding-top: 1rem; font-size: .82rem; line-height: 1.8; color: #7E93A8; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.07); padding: 1.2rem 0; margin-top: 2rem; color: #8FA3B8; font-size: .85rem; }
.footer-bottom a { color: #C7D5E4; }

@media (min-width: 992px) {
 .navbar-collapse { background: transparent; padding: 0; margin-top: 0; }
}
@media (max-width: 991.98px) {
 .navbar-nav { padding: .4rem 0; }
 .navbar-nav .nav-link { padding: .7rem .2rem !important; border-bottom: 0; }
 .navbar-nav .nav-link.active { border-bottom: 0; color: var(--color-secondary) !important; }
 .category-hero { text-align: center; }
 .category-search { margin-left: auto; margin-right: auto; }
 .category-hero .breadcrumb { justify-content: center; }
 .archive-card .card-title { margin-top: .8rem; }
}
@media (max-width: 767.98px) {
 .stat-strip .row { --bs-gutter-x: 0; }
 .stat-strip .stat-item { padding: 1rem .3rem; }
 .archive-card .thumb { aspect-ratio: 16/8; }
 .pagination .page-item:nth-child(4), .pagination .page-item:nth-child(5) { display: none; }
 .cta-block { text-align: center; }
}

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}