/* roulang page: index */
:root {
  --color-bg: #F7FAFC;
  --color-surface: #ffffff;
  --color-primary: #1B6D92;
  --color-primary-dark: #0A2A3C;
  --color-primary-light: #E8F1F7;
  --color-accent: #E88B3C;
  --color-accent-dark: #c96f26;
  --color-text: #1F3442;
  --color-text-secondary: #5A707F;
  --color-border: #E1E9EF;
  --color-deep: #0A2A3C;
  --font-main: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Source Han Sans SC", sans-serif;
  --radius-card: 14px;
  --radius-btn: 9px;
  --radius-badge: 999px;
  --shadow-card: 0 2px 10px rgba(10, 60, 90, 0.05);
  --shadow-card-hover: 0 18px 36px rgba(10, 60, 90, 0.14);
  --container: 1200px;
  --header-top-height: 52px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.75;
  background: var(--color-bg);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
}

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

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

a:hover {
  color: inherit;
}

button, input, select, textarea {
  font: inherit;
  font-family: var(--font-main);
}

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

.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.wrap {
  width: 100%;
}

.skip-link {
  position: fixed;
  left: -999px;
  top: 10px;
  z-index: 99;
  background: var(--color-primary);
  color: #fff;
  padding: 8px 18px;
  border-radius: 6px;
}

.skip-link:focus {
  left: 10px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 0;
  padding: 10px 20px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.3;
  cursor: pointer;
  transition: all 0.25s ease;
  white-space: nowrap;
}

.btn i {
  font-size: 13px;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 8px 18px rgba(27, 109, 146, 0.2);
}

.btn-primary:hover {
  background: #227DA5;
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 12px 22px rgba(27, 109, 146, 0.26);
}

.btn-primary:active {
  background: #155979;
  transform: translateY(0);
  box-shadow: 0 4px 10px rgba(27, 109, 146, 0.16);
}

.btn-light {
  background: #fff;
  color: var(--color-primary-dark);
  border: 1px solid rgba(255, 255, 255, 0.65);
}

.btn-light:hover {
  background: #EAF3F6;
  color: var(--color-primary-dark);
  transform: translateY(-1px);
}

.btn-light:active {
  transform: translateY(0);
  background: #dce6ea;
}

.btn-accent {
  background: var(--color-accent);
  color: #fff;
}

.btn-accent:hover {
  background: var(--color-accent-dark);
  color: #fff;
  transform: translateY(-1px);
}

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

.btn-outline-white {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.65);
  color: #fff;
}

.btn-outline-white:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
}

.btn-outline-white:active {
  background: rgba(255, 255, 255, 0.18);
}

.btn-lg {
  padding: 13px 26px;
  font-size: 16px;
}

.btn-block {
  width: 100%;
}

.btn-secondary {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.btn-secondary:hover {
  background: #dae7f0;
  color: var(--color-primary-dark);
}

/* ---------- Badge ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 12px;
  border-radius: var(--radius-badge);
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.badge-accent {
  background: rgba(232, 139, 60, 0.14);
  color: var(--color-accent-dark);
}

.badge-light {
  background: rgba(255, 255, 255, 0.16);
  color: #fff;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow 0.2s ease, background 0.2s ease;
}

.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(16px);
  box-shadow: 0 8px 24px rgba(10, 42, 60, 0.08);
}

.header-primary {
  border-bottom: 1px solid var(--color-border);
}

.header-primary-inner {
  width: 100%;
  height: var(--header-top-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
}

.brand-icon {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: #fff;
  font-size: 13px;
}

.brand-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.02em;
  line-height: 1.2;
  white-space: nowrap;
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-tools .btn {
  padding: 7px 15px;
  font-size: 13px;
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 36px;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.nav-toggle .bar {
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--color-text);
  transition: all 0.25s ease;
}

.site-header.nav-open .nav-toggle .bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.site-header.nav-open .nav-toggle .bar:nth-child(2) {
  opacity: 0;
}

.site-header.nav-open .nav-toggle .bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.header-nav {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.header-nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 46px;
}

.main-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: 4px;
}

.main-nav li a {
  display: block;
  padding: 9px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  border-radius: 8px;
  transition: all 0.2s ease;
  position: relative;
}

.main-nav li a:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.main-nav li.active a {
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-weight: 600;
}

.main-nav li.active a::after {
  content: "";
  position: absolute;
  bottom: 4px;
  left: 16px;
  right: 16px;
  height: 2px;
  border-radius: 2px;
  background: var(--color-primary);
}

.hot-keys {
  display: flex;
  align-items: center;
  gap: 7px;
}

.hot-label {
  font-size: 12px;
  color: var(--color-text-secondary);
  margin-right: 2px;
}

.hot-keys a {
  display: inline-flex;
  align-items: center;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 12px;
  border-radius: 999px;
  padding: 4px 12px;
  transition: background 0.2s, color 0.2s;
}

.hot-keys a:hover {
  background: var(--color-primary);
  color: #fff;
}

/* ---------- Hero ---------- */
.hero-section {
  position: relative;
  background-color: var(--color-deep);
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  padding: 80px 0;
  min-height: 620px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(7, 30, 43, 0.94) 0%, rgba(10, 42, 60, 0.72) 46%, rgba(10, 42, 60, 0.05) 100%);
}

.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 340px);
  gap: 44px;
  align-items: center;
  width: 100%;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.18);
  padding: 6px 16px;
  border-radius: 999px;
  font-size: 13px;
  letter-spacing: 0.03em;
  margin-bottom: 20px;
}

.hero-title {
  color: #fff;
  font-size: 40px;
  line-height: 1.3;
  font-weight: 700;
  letter-spacing: 0.01em;
  margin: 0 0 16px;
}

.hero-sub {
  color: rgba(255, 255, 255, 0.82);
  font-size: 16px;
  line-height: 1.9;
  max-width: 600px;
  margin: 0 0 30px;
}

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

.access-card {
  background: #fff;
  border-radius: 18px;
  padding: 26px;
  box-shadow: 0 24px 56px rgba(0, 0, 0, 0.18);
}

.access-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 18px;
}

.access-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
}

.access-title i {
  color: var(--color-primary);
  margin-right: 6px;
}

.access-tip {
  font-size: 12px;
  color: var(--color-text-secondary);
  background: var(--color-primary-light);
  padding: 3px 10px;
  border-radius: 999px;
}

.field {
  margin-bottom: 14px;
}

.field label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 6px;
}

.field input {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  height: 44px;
  padding: 0 14px;
  background: #FBFCFE;
  transition: border 0.2s, box-shadow 0.2s;
}

.field input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(27, 109, 146, 0.12);
}

.access-help {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 14px;
  font-size: 13px;
}

.access-help a {
  color: var(--color-primary);
}

.access-help a:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

.access-note {
  margin-top: 14px;
  background: var(--color-primary-light);
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 12px;
  color: var(--color-text-secondary);
}

/* ---------- Section Common ---------- */
.section {
  padding: 84px 0;
}

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

.section-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 26px;
}

.section-heading h2 {
  font-size: 27px;
  font-weight: 700;
  line-height: 1.4;
  margin: 0;
  color: var(--color-text);
}

.section-heading .heading-tip {
  display: block;
  font-size: 13px;
  font-weight: 400;
  color: var(--color-text-secondary);
  margin-top: 5px;
}

.heading-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.more-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 14px;
  color: var(--color-primary);
  font-weight: 500;
  border: 1px solid var(--color-border);
  padding: 6px 14px;
  border-radius: 999px;
  transition: all 0.2s;
}

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

.slide-btn {
  width: 36px;
  height: 36px;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  background: #fff;
  color: var(--color-text);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

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

.slide-btn:active {
  transform: scale(0.95);
}

/* ---------- Shelf ---------- */
.shelf-section {
  padding-bottom: 70px;
}

.shelf-scroll {
  overflow-x: auto;
  scrollbar-width: none;
  margin: 0 -8px;
  padding: 2px 8px 16px;
}

.shelf-scroll::-webkit-scrollbar {
  display: none;
}

.shelf-track {
  display: flex;
  gap: 18px;
  width: max-content;
}

.shelf-card {
  flex: 0 0 235px;
  max-width: 235px;
  background: var(--color-surface);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

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

.shelf-poster {
  position: relative;
  height: 300px;
  overflow: hidden;
  background: var(--color-primary-light);
}

.shelf-poster img {
  width: 100%;
  height: 100%;
  object-position: center;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.shelf-card:hover .shelf-poster img {
  transform: scale(1.04);
}

.shelf-poster .badge {
  position: absolute;
  left: 12px;
  top: 12px;
}

.shelf-info-badge {
  position: absolute;
  right: 10px;
  top: 12px;
  background: rgba(10, 42, 60, 0.76);
  color: #fff;
  border-radius: 999px;
  font-size: 11px;
  padding: 4px 10px;
  backdrop-filter: blur(4px);
}

.shelf-caption {
  padding: 13px 15px 15px;
}

.shelf-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.45;
  margin: 0 0 5px;
}

.shelf-name a {
  color: inherit;
}

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

.shelf-extra {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: 13px;
  color: var(--color-text-secondary);
}

/* ---------- Feature / Rank ---------- */
.feature-layout {
  display: grid;
  grid-template-columns: 380px minmax(0, 1fr);
  gap: 24px;
  align-items: stretch;
}

.rank-panel {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  padding: 24px 24px 12px;
}

.rank-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.rank-head h2 {
  margin: 0;
  font-size: 22px;
  font-weight: 700;
}

.rank-head span {
  font-size: 12px;
  color: var(--color-text-secondary);
  background: var(--color-primary-light);
  padding: 3px 10px;
  border-radius: 999px;
}

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

.rank-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 14px 10px;
  border-radius: 10px;
  transition: background 0.2s;
}

.rank-item:hover {
  background: var(--color-primary-light);
}

.rank-num {
  font-size: 30px;
  font-weight: 800;
  line-height: 1.1;
  width: 44px;
  color: var(--color-primary);
  opacity: 0.42;
  letter-spacing: -0.04em;
}

.rank-item:nth-child(1) .rank-num {
  color: var(--color-accent);
  opacity: 1;
}

.rank-item:nth-child(2) .rank-num {
  opacity: 0.82;
}

.rank-body .rank-title {
  display: block;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--color-text);
  margin-bottom: 3px;
}

.rank-item:hover .rank-title {
  color: var(--color-primary);
}

.rank-body .rank-meta {
  font-size: 12px;
  color: var(--color-text-secondary);
  display: block;
}

.feature-card {
  position: relative;
  background: var(--color-surface);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.25s, box-shadow 0.25s;
}

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

.feature-card-img {
  position: relative;
  min-height: 300px;
  max-height: 390px;
  overflow: hidden;
  flex: 1;
}

.feature-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 300px;
  transition: transform 0.45s ease;
}

.feature-card:hover .feature-card-img img {
  transform: scale(1.025);
}

.feature-card-img::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 40%;
  background: linear-gradient(180deg, transparent 10%, rgba(0, 0, 0, 0.12));
}

.feature-pin {
  position: absolute;
  left: 18px;
  top: 18px;
  z-index: 2;
  background: var(--color-accent);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 13px;
  border-radius: 999px;
}

.feature-card-body {
  padding: 22px 26px 24px;
}

.feature-card-body h3 {
  font-size: 22px;
  line-height: 1.5;
  margin: 0 0 8px;
  font-weight: 700;
}

.feature-card-body p {
  color: var(--color-text-secondary);
  font-size: 15px;
  line-height: 1.8;
  margin: 0 0 14px;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
}

.text-link i {
  transition: transform 0.25s ease;
}

.text-link:hover {
  color: var(--color-primary-dark);
}

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

/* ---------- Zone / Channel ---------- */
.zones-section {
  background: var(--color-surface);
}

.zone-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(0, 0.75fr);
  gap: 22px;
}

.zone-card {
  position: relative;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  background: var(--color-surface);
  display: block;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

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

.zone-main {
  min-height: 420px;
  grid-row: span 2;
  display: flex;
}

.zone-main-bg {
  flex: 1;
  min-height: 420px;
  background-image: url('/assets/images/coverpic/cover-3.webp');
  background-size: cover;
  background-position: center;
  position: relative;
  display: flex;
  align-items: flex-end;
}

.zone-main-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.05) 0%, rgba(8, 31, 45, 0.7) 72%, rgba(8, 31, 45, 0.9) 100%);
  z-index: 1;
}

.zone-main-content {
  position: relative;
  z-index: 2;
  width: 100%;
  padding: 30px;
  color: #fff;
}

.zone-main-content .badge {
  margin-bottom: 12px;
}

.zone-main-content h3 {
  font-size: 27px;
  line-height: 1.4;
  font-weight: 700;
  margin: 0 0 10px;
  max-width: 640px;
}

.zone-main-content p {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.88);
  line-height: 1.8;
  margin-bottom: 18px;
  max-width: 620px;
}

.zone-stack {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.zone-mini {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 192px;
  padding: 24px;
  color: #fff;
  position: relative;
}

.zone-mini .zone-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  margin-bottom: 10px;
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}

.zone-mini h3 {
  font-size: 20px;
  line-height: 1.5;
  margin: 0 0 5px;
  font-weight: 700;
}

.zone-mini p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.84);
  line-height: 1.6;
  margin: 0;
}

.zone-mini-bg-1,
.zone-mini-bg-2 {
  background-size: cover;
  background-position: center;
}

.zone-mini-bg-1 {
  background-image: url('/assets/images/coverpic/cover-4.webp');
}

.zone-mini-bg-2 {
  background-image: url('/assets/images/coverpic/cover-6.png');
}

.zone-wide {
  grid-column: 1 / -1;
}

.zone-wide-inner {
  min-height: 148px;
  background: var(--color-primary-light);
  padding: 26px 30px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border-radius: var(--radius-card);
}

.zone-wide-inner .wide-content h3 {
  font-size: 20px;
  font-weight: 700;
  margin: 0 0 6px;
  color: var(--color-text);
}

.zone-wide-inner .wide-content p {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin: 0;
  max-width: 720px;
}

/* ---------- News ---------- */
.news-section {
  background: var(--color-bg);
}

.cms-news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.news-card {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

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

.news-thumb-wrap {
  display: block;
  overflow: hidden;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--color-primary-light);
}

.news-thumb-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s ease;
}

.news-card:hover .news-thumb-wrap img {
  transform: scale(1.04);
}

.news-info {
  padding: 15px 18px 18px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.news-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 9px;
}

.news-meta time {
  font-size: 12px;
  color: var(--color-text-secondary);
}

.news-title {
  font-size: 16px;
  line-height: 1.55;
  margin: 0 0 8px;
}

.news-title a {
  color: var(--color-text);
  font-weight: 600;
}

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

.news-desc {
  color: var(--color-text-secondary);
  font-size: 13px;
  line-height: 1.7;
  margin: 0 0 14px;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-read-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.news-read-link i {
  font-size: 12px;
}

.news-read-link:hover {
  color: var(--color-primary-dark);
}

.empty-news-block {
  grid-column: 1 / -1;
  background: var(--color-primary-light);
  border-radius: var(--radius-card);
  padding: 48px 20px;
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 16px;
  border: 1px dashed var(--color-border);
}

/* ---------- FAQ ---------- */
.faq-list {
  max-width: 920px;
  margin-inline: auto;
}

.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  margin-bottom: 12px;
  padding: 0 20px;
  overflow: hidden;
  transition: box-shadow 0.2s;
}

.faq-item:hover {
  border-color: #cad9e4;
  box-shadow: var(--shadow-card);
}

.faq-item summary {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 0;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
}

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

.faq-item summary .q-icon {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  flex-shrink: 0;
}

.faq-item summary .arrow {
  margin-left: auto;
  font-size: 14px;
  color: var(--color-text-secondary);
  transition: transform 0.25s;
}

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

.faq-answer {
  padding: 0 0 20px;
  margin-left: 40px;
  color: var(--color-text-secondary);
  font-size: 15px;
  line-height: 1.9;
}

/* ---------- CTA ---------- */
.cta-section {
  padding: 90px 0;
}

.cta-panel {
  background: var(--color-deep);
  border-radius: 24px;
  overflow: hidden;
  position: relative;
  padding: 42px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  color: #fff;
}

.cta-panel::after {
  content: "";
  position: absolute;
  right: -60px;
  top: -80px;
  width: 220px;
  height: 220px;
  background: rgba(232, 139, 60, 0.2);
  border-radius: 50%;
}

.cta-panel h2 {
  font-size: 28px;
  line-height: 1.45;
  margin: 0 0 12px;
  font-weight: 700;
}

.cta-panel p {
  color: rgba(255, 255, 255, 0.76);
  font-size: 15px;
  margin: 0;
  max-width: 700px;
}

.cta-actions {
  display: flex;
  gap: 12px;
  flex-shrink: 0;
  position: relative;
  z-index: 2;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-deep);
  color: rgba(255, 255, 255, 0.72);
  padding: 64px 0 0;
  margin-top: 20px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 44px;
}

.footer-brand-name {
  font-size: 23px;
  font-weight: 700;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.footer-brand-icon {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.58);
  max-width: 370px;
  margin-bottom: 22px;
}

.footer-title {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  margin: 0 0 14px;
}

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

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

.footer-links a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.64);
  transition: color 0.2s, padding-left 0.2s;
}

.footer-links a:hover {
  color: #fff;
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 18px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-bottom p {
  margin: 0;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
}

/* ---------- Responsive ---------- */
@media (max-width: 1100px) {
  .hero-grid {
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 28px;
  }

  .hero-title {
    font-size: 36px;
  }

  .feature-layout {
    grid-template-columns: 320px minmax(0, 1fr);
  }

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

  .zone-main {
    grid-row: auto;
    min-height: 360px;
  }

  .zone-main-bg {
    min-height: 360px;
  }

  .zone-wide {
    grid-column: auto;
  }

  .cms-news-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 900px) {
  .nav-toggle {
    display: inline-flex;
  }

  .header-nav {
    display: none;
  }

  .site-header.nav-open .header-nav {
    display: block;
    max-height: 80vh;
    overflow-y: auto;
  }

  .header-nav-inner {
    flex-direction: column;
    align-items: stretch;
    padding: 14px 0 16px;
    gap: 12px;
  }

  .main-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .main-nav li a {
    border-radius: 8px;
  }

  .hot-keys {
    flex-wrap: wrap;
    gap: 6px;
  }

  .hot-label {
    width: 100%;
  }

  .header-tools .btn {
    display: none;
  }

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

  .hero-section {
    padding: 64px 0 50px;
    min-height: 0;
  }

  .access-card {
    max-width: 100%;
  }

  .feature-layout {
    grid-template-columns: 1fr;
  }

  .rank-panel {
    padding: 20px 18px 6px;
  }

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

  .zone-wide {
    grid-column: auto;
  }

  .cta-panel {
    flex-direction: column;
    align-items: flex-start;
    padding: 36px 28px;
  }

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

@media (max-width: 640px) {
  .container {
    padding-left: 18px;
    padding-right: 18px;
  }

  .brand-icon {
    width: 26px;
    height: 26px;
  }

  .brand-name {
    font-size: 14px;
  }

  .hero-title {
    font-size: 27px;
  }

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

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

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

  .section {
    padding: 58px 0;
  }

  .section-heading {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .heading-actions {
    width: 100%;
    justify-content: space-between;
  }

  .shelf-card {
    flex-basis: 68vw;
    max-width: 68vw;
  }

  .shelf-poster {
    height: 88vw;
  }

  .feature-card-img {
    min-height: 220px;
  }

  .feature-card-img img {
    min-height: 220px;
  }

  .feature-card-body {
    padding: 18px;
  }

  .feature-card-body h3 {
    font-size: 20px;
  }

  .zone-main-content {
    padding: 21px;
  }

  .zone-main-content h3 {
    font-size: 22px;
  }

  .zone-mini {
    min-height: 180px;
  }

  .zone-wide-inner {
    flex-direction: column;
    padding: 20px;
  }

  .zone-wide-inner .btn {
    width: 100%;
  }

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

  .faq-item summary {
    font-size: 15px;
  }

  .faq-answer {
    margin-left: 0;
  }

  .cta-section {
    padding: 46px 0;
  }

  .cta-panel h2 {
    font-size: 23px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 34px;
  }

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

@media (max-width: 390px) {
  .brand-name {
    letter-spacing: 0;
  }
}

/* roulang page: article */
:root {
  --font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Source Han Sans SC", "Helvetica Neue", Arial, sans-serif;
  --color-bg: #F7FAFC;
  --color-surface: #FFFFFF;
  --color-primary: #1B6D92;
  --color-primary-dark: #0A2A3C;
  --color-primary-light: #E8F1F7;
  --color-accent: #E88B3C;
  --color-text: #1F3442;
  --color-text-secondary: #5A707F;
  --color-border: #E1E9EF;

  --radius-lg: 14px;
  --radius-md: 10px;
  --radius-sm: 8px;
  --radius-pill: 999px;

  --shadow-sm: 0 2px 10px rgba(10, 60, 90, 0.05);
  --shadow-hover: 0 12px 28px rgba(10, 60, 90, 0.12);
  --transition: 0.25s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

ul,
ol {
  list-style: none;
}

button,
input,
textarea,
select {
  font: inherit;
  border: none;
  background: none;
  color: inherit;
}

button {
  cursor: pointer;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--color-primary-dark);
  line-height: 1.35;
  font-weight: 800;
}

img:focus-visible,
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 3px solid rgba(27, 109, 146, 0.55);
  outline-offset: 2px;
}

.container {
  max-width: 1220px;
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}

/* ========== 按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 18px;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.4;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  background: rgba(27, 109, 146, 0);
  color: var(--color-primary);
  transition: background var(--transition), color var(--transition), border-color var(--transition), box-shadow var(--transition), transform var(--transition);
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 8px 20px rgba(27, 109, 146, 0.18);
}

.btn-primary:hover {
  background: #217da6;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 12px 26px rgba(27, 109, 146, 0.26);
}

.btn-primary:active {
  transform: translateY(0);
  background: #155878;
}

.btn-outline {
  border-color: #C8D8E3;
  background: var(--color-surface);
  color: var(--color-primary);
}

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

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

.btn-ghost:hover {
  background: rgba(27, 109, 146, 0.08);
}

.btn-accent {
  background: var(--color-accent);
  color: #fff;
  box-shadow: 0 8px 18px rgba(232, 139, 60, 0.22);
}

.btn-accent:hover {
  background: #d67728;
  transform: translateY(-2px);
}

.btn-accent:active {
  background: #c86a1c;
  transform: translateY(0);
}

/* ========== 徽章与标签 ========== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 13px;
  border-radius: var(--radius-pill);
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 600;
  line-height: 1.6;
}

.badge-accent {
  background: #FFF1E3;
  color: #C46824;
}

/* ========== 导航 ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: rgba(255, 255, 255, 0.94);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  box-shadow: 0 4px 18px rgba(10, 42, 60, 0.05);
  border-bottom: 1px solid rgba(225, 233, 239, 0.72);
}

.header-primary {
  background: rgba(255, 255, 255, 0.72);
  border-bottom: 1px solid rgba(225, 233, 239, 0.65);
}

.header-primary-inner {
  min-height: 58px;
  display: flex;
  align-items: center;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.brand-icon,
.footer-brand-icon {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex: 0 0 auto;
}

.brand-name {
  font-size: 20px;
  font-weight: 800;
  color: var(--color-primary-dark);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.header-tools {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-toggle {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  background: #F1F5F8;
  border: 1px solid var(--color-border);
  transition: background var(--transition), border-color var(--transition);
}

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

.nav-toggle .bar {
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--color-primary-dark);
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle[aria-expanded="true"] .bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.header-nav {
  background: rgba(255, 255, 255, 0.92);
}

.header-nav-inner {
  min-height: 50px;
  display: flex;
  align-items: center;
  gap: 18px;
}

.main-nav ul {
  display: flex;
  align-items: center;
  gap: 2px;
  margin: 0;
  padding: 0;
}

.main-nav li {
  list-style: none;
}

.main-nav a {
  display: inline-flex;
  align-items: center;
  padding: 13px 14px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  border-bottom: 3px solid transparent;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
}

.main-nav a:hover {
  color: var(--color-primary);
  background: rgba(232, 241, 247, 0.45);
}

.main-nav li.active a {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.hot-keys {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
}

.hot-label {
  color: var(--color-text-secondary);
  font-weight: 600;
  margin-right: 5px;
}

.hot-keys a {
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: #F2F6F9;
  color: var(--color-text-secondary);
  font-size: 13px;
  transition: color var(--transition), background var(--transition), transform var(--transition);
}

.hot-keys a:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
  transform: translateY(-1px);
}

/* ========== 文章主体 ========== */
.article-main {
  padding: 48px 0 88px;
  background: linear-gradient(180deg, #F2F8FC 0%, var(--color-bg) 100%);
}

.article-container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 22px;
}

.breadcrumb i {
  font-size: 12px;
  opacity: 0.8;
}

.breadcrumb a {
  color: var(--color-text-secondary);
  transition: color var(--transition);
}

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

.breadcrumb .current {
  color: #8498A5;
  pointer-events: none;
}

.article-wrap {
  margin-top: 8px;
}

.article-box {
  background: var(--color-surface);
  border-radius: 20px;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(225, 233, 239, 0.7);
  padding: clamp(28px, 5vw, 52px);
  overflow: hidden;
}

.article-head {
  max-width: 800px;
  margin: 0 auto 34px;
  text-align: left;
}

.article-cat {
  margin-bottom: 16px;
}

.article-title {
  font-size: clamp(28px, 3.6vw, 40px);
  font-weight: 800;
  line-height: 1.32;
  letter-spacing: -0.01em;
  margin-bottom: 22px;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 24px;
  padding-top: 18px;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  font-size: 14px;
}

.article-meta span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.article-meta i {
  color: var(--color-primary);
  opacity: 0.8;
}

.article-meta .badge i {
  color: inherit;
}

/* ========== 正文排版 ========== */
.article-body {
  max-width: 820px;
  margin: 0 auto;
  font-size: 17px;
  line-height: 1.95;
  color: #2A4454;
}

.article-body p {
  margin: 0 0 24px;
}

.article-body h2 {
  font-size: 24px;
  font-weight: 800;
  margin: 46px 0 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-border);
}

.article-body h3 {
  font-size: 20px;
  font-weight: 700;
  margin: 36px 0 14px;
}

.article-body h4 {
  font-size: 17px;
  font-weight: 700;
  margin: 28px 0 10px;
}

.article-body img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  margin: 28px auto;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.article-body ul,
.article-body ol {
  margin: 0 0 26px;
  padding-left: 22px;
}

.article-body ul {
  list-style: disc;
}

.article-body ol {
  list-style: decimal;
}

.article-body li {
  margin-bottom: 8px;
  padding-left: 4px;
}

.article-body blockquote {
  margin: 28px 0;
  padding: 18px 24px;
  background: var(--color-primary-light);
  border-left: 4px solid var(--color-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--color-primary-dark);
  font-style: normal;
}

.article-body blockquote p {
  margin-bottom: 0;
}

.article-body a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition);
}

.article-body a:hover {
  color: var(--color-accent);
}

.article-body table {
  width: 100%;
  margin: 28px 0;
  border-collapse: collapse;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.article-body th,
.article-body td {
  padding: 13px 16px;
  border: 1px solid var(--color-border);
  text-align: left;
  font-size: 15px;
}

.article-body th {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  font-weight: 700;
}

.article-body hr {
  border: none;
  height: 1px;
  background: var(--color-border);
  margin: 42px 0;
}

/* ========== 空文章状态 ========== */
.empty-article {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
  padding: 72px 20px;
}

.empty-icon {
  width: 76px;
  height: 76px;
  margin: 0 auto 24px;
  border-radius: 50%;
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
}

.empty-article h1 {
  font-size: 30px;
  font-weight: 800;
  margin-bottom: 12px;
}

.empty-article p {
  color: var(--color-text-secondary);
  margin-bottom: 28px;
}

/* ========== 文章底部分隔 ========== */
.article-divider {
  max-width: 820px;
  margin: 44px auto 0;
  border-top: 1px solid var(--color-border);
}

.article-footer-nav {
  max-width: 820px;
  margin: 24px auto 40px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.article-nav-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

/* ========== 相关推荐 / 延伸阅读 ========== */
.related-section {
  max-width: 1120px;
  margin: 0 auto;
  padding-top: 56px;
}

.related-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 26px;
}

.related-header h2 {
  font-size: 26px;
  font-weight: 800;
  margin: 0;
}

.related-header .text-secondary {
  color: var(--color-text-secondary);
  font-size: 14px;
  margin-bottom: 4px;
}

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

.related-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  background: var(--color-surface);
  border: 1px solid rgba(225, 233, 239, 0.8);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(27, 109, 146, 0.25);
}

.related-cover {
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background-color: var(--color-primary-light);
  position: relative;
}

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

.related-card:hover .related-cover img {
  transform: scale(1.03);
}

.related-body {
  padding: 20px 20px 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.related-body .badge {
  align-self: flex-start;
  margin-bottom: 12px;
  font-size: 12px;
  padding: 3px 11px;
}

.related-body h3 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.55;
  margin-bottom: 10px;
}

.related-body p {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 14px;
  line-height: 1.7;
}

.related-more {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
}

.related-more i {
  transition: transform var(--transition);
}

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

.related-tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 12px;
}

.related-tag-row span {
  font-size: 12px;
  color: var(--color-text-secondary);
  background: #F4F7FA;
  border-radius: var(--radius-pill);
  padding: 3px 10px;
}

/* ========== 页脚 ========== */
.site-footer {
  background: #0E2B3D;
  color: #C5D4DE;
  font-size: 14px;
  padding: 64px 0 0;
}

.site-footer a {
  color: #C5D4DE;
  transition: color var(--transition), padding-left var(--transition);
}

.site-footer a:hover {
  color: #FFFFFF;
  padding-left: 2px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-brand-name {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 20px;
  font-weight: 800;
  color: #FFFFFF;
  font-family: var(--font-family);
  margin-bottom: 18px;
}

.footer-brand-icon {
  background: rgba(232, 241, 247, 0.16);
  color: #9FD0E6;
}

.footer-desc {
  color: #A5BBC8;
  line-height: 1.85;
  margin-bottom: 0;
  max-width: 420px;
}

.footer-title {
  font-size: 16px;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 18px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.footer-links li {
  margin-bottom: 11px;
}

.footer-links a {
  font-size: 14px;
  line-height: 1.6;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0 24px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: #8FA6B4;
  font-size: 13px;
}

.footer-bottom p {
  margin: 0;
}

/* ========== 响应式调整 ========== */
@media (max-width: 64em) {
  .related-grid {
    gap: 18px;
  }

  .hot-keys {
    display: none;
  }
}

@media (max-width: 52em) {
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .article-box {
    padding: 30px 22px;
  }

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

@media (max-width: 40em) {
  .container,
  .article-container {
    padding: 0 18px;
  }

  .header-primary-inner {
    min-height: 56px;
  }

  .brand-name {
    font-size: 17px;
  }

  .brand-icon {
    width: 30px;
    height: 30px;
    font-size: 14px;
  }

  .header-tools .btn {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .header-nav {
    position: absolute;
    top: calc(100% - 1px);
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 18px 30px rgba(10, 42, 60, 0.14);
    display: none;
    max-height: calc(100vh - 64px);
    overflow-y: auto;
  }

  .header-nav.open {
    display: block;
  }

  .header-nav-inner {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    padding: 14px 18px 20px;
  }

  .main-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .main-nav a {
    padding: 12px 10px;
    border-bottom: none;
    border-left: 3px solid transparent;
    border-radius: 6px;
  }

  .main-nav li.active a {
    border-left-color: var(--color-primary);
    background: var(--color-primary-light);
  }

  .hot-keys {
    display: flex;
    flex-wrap: wrap;
    margin-left: 0;
    padding-top: 12px;
    border-top: 1px solid var(--color-border);
  }

  .hot-label {
    width: 100%;
    margin-bottom: 2px;
  }

  .article-title {
    font-size: 24px;
    line-height: 1.4;
  }

  .article-box {
    border-radius: 16px;
    padding: 24px 18px;
  }

  .article-body {
    font-size: 16px;
  }

  .article-body blockquote {
    padding: 14px 16px;
  }

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

  .related-body h3 {
    font-size: 17px;
  }

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

  .article-nav-links {
    width: 100%;
  }

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

/* roulang page: category1 */
:root{
  --color-bg:#F7FAFC;
  --color-surface:#FFFFFF;
  --color-primary:#1B6D92;
  --color-primary-dark:#0A2A3C;
  --color-primary-light:#E8F1F7;
  --color-accent:#E88B3C;
  --color-text:#1F3442;
  --color-text-secondary:#5A707F;
  --color-border:#E1E9EF;
  --radius-card:14px;
  --radius-btn:8px;
  --radius-full:999px;
  --shadow-card:0 2px 10px rgba(10,60,90,.05);
  --shadow-card-hover:0 12px 28px rgba(10,60,90,.12);
  --space-block:80px;
  --space-block-small:52px;
  --font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
body{margin:0;background:var(--color-bg);color:var(--color-text);font-family:var(--font-family);font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased;}
img{display:block;max-width:100%;height:auto;}
a{color:var(--color-primary);text-decoration:none;transition:color .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease;}
a:hover{color:#155979;}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px;border-radius:4px;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%;}
.block-pad{padding:var(--space-block) 0;}
.block-pad-small{padding:var(--space-block-small) 0;}
.bg-white{background:var(--color-surface);}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:var(--radius-btn);font-weight:600;font-family:inherit;line-height:1.2;padding:12px 22px;font-size:15px;cursor:pointer;transition:all .22s ease;box-shadow:0 1px 2px rgba(10,60,90,.06);white-space:nowrap;text-align:center;}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--color-primary);color:#fff;border-color:var(--color-primary);}
.btn-primary:hover{background:#146080;color:#fff;border-color:#146080;box-shadow:0 6px 16px rgba(27,109,146,.22);}
.btn-primary:focus-visible{outline:2px solid #0A2A3C;outline-offset:2px;box-shadow:0 0 0 4px rgba(27,109,146,.18);}
.btn-outline{background:transparent;color:var(--color-primary-dark);border-color:#B9CBD7;}
.btn-outline:hover{background:var(--color-primary-light);color:var(--color-primary-dark);border-color:#7F9DB0;}
.btn-accent{background:var(--color-accent);color:#0A2A3C;border-color:var(--color-accent);}
.btn-accent:hover{background:#d97a25;color:#0A2A3C;border-color:#d97a25;box-shadow:0 8px 18px rgba(232,139,60,.22);}
.btn-sm{padding:8px 15px;font-size:14px;}
.btn-link{padding:0;font-weight:600;background:transparent;border:0;box-shadow:none;color:var(--color-primary);}
.btn-link:hover{color:#0A2A3C;text-decoration:underline;}
.eyebrow{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--color-primary);background:var(--color-primary-light);border-radius:var(--radius-full);padding:4px 13px;font-weight:600;}
.badge{display:inline-flex;align-items:center;gap:5px;background:#e9f3f7;color:var(--color-primary);border-radius:var(--radius-full);padding:3px 10px;font-size:12px;font-weight:600;white-space:nowrap;}
.badge-accent{background:#f9ede1;color:#99550f;}
.site-header{position:sticky;top:0;z-index:1000;background:#fff;box-shadow:0 1px 12px rgba(10,60,90,.06);}
.site-header .header-primary{background:rgba(255,255,255,.96);border-bottom:1px solid var(--color-border);}
.header-primary-inner{display:flex;align-items:center;justify-content:space-between;gap:14px;min-height:54px;}
.brand{display:inline-flex;align-items:center;gap:9px;min-width:0;}
.brand-icon{width:30px;height:30px;border-radius:9px;display:inline-flex;align-items:center;justify-content:center;background:var(--color-primary-dark);color:#fff;font-size:14px;flex:0 0 auto;}
.brand-name{font-weight:800;font-size:18px;color:var(--color-text);letter-spacing:.02em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.header-tools{display:flex;align-items:center;gap:14px;}
.header-btn-search,.nav-toggle{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:10px;border:1px solid var(--color-border);background:var(--color-surface);color:var(--color-text);cursor:pointer;font-size:15px;transition:all .22s ease;}
.header-btn-search:hover,.nav-toggle:hover{background:var(--color-primary-light);}
.header-btn-search:focus-visible,.nav-toggle:focus-visible{outline:2px solid var(--color-primary);outline-offset:1px;}
.nav-toggle{display:none;flex-direction:column;gap:5px;width:40px;}
.nav-toggle .bar{display:block;width:18px;height:2px;background:var(--color-text);border-radius:4px;transition:transform .25s ease,opacity .25s ease;}
.header-nav{background:rgba(255,255,255,.98);}
.header-nav-inner{display:flex;align-items:center;gap:24px;min-height:48px;flex-wrap:nowrap;}
.main-nav{flex:0 0 auto;}
.main-nav ul{margin:0;padding:0;display:flex;align-items:center;gap:2px;list-style:none;}
.main-nav li{margin:0;}
.main-nav a{display:block;padding:12px 15px;font-size:15px;color:var(--color-text);font-weight:600;border-bottom:3px solid transparent;line-height:1.2;border-radius:4px 4px 0 0;margin-bottom:-1px;}
.main-nav a:hover{color:var(--color-primary);background:#f1f6fa;}
.main-nav li.active a{color:var(--color-primary);border-bottom-color:var(--color-primary);}
.hot-keys{display:flex;align-items:center;flex-wrap:nowrap;gap:6px;margin-left:auto;overflow:hidden;white-space:nowrap;}
.hot-label{font-size:12px;color:var(--color-text-secondary);background:var(--color-primary-light);padding:3px 9px;border-radius:var(--radius-full);font-weight:600;}
.hot-keys a{font-size:13px;color:var(--color-text-secondary);border:1px solid var(--color-border);border-radius:var(--radius-full);padding:3px 11px;transition:all .2s ease;white-space:nowrap;}
.hot-keys a:hover{color:var(--color-primary);border-color:var(--color-primary);background:var(--color-primary-light);}
.page-banner{position:relative;background:linear-gradient(105deg,rgba(10,42,60,.92) 18%,rgba(10,42,60,.55) 48%,rgba(10,42,60,.25) 100%),url("/assets/images/backpic/back-2.webp") center/cover no-repeat;background-color:var(--color-primary-dark);color:#fff;padding:78px 0 62px;}
.page-banner .crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:#bfd4e0;margin-bottom:20px;}
.page-banner .crumb a{color:#dfeaf1;padding:2px 2px;border-bottom:1px solid rgba(255,255,255,.45);}
.page-banner .crumb a:hover{color:#fff;border-color:#fff;}
.page-banner .crumb i{font-size:10px;opacity:.7;}
.page-banner .crumb .current{color:#d8e6ed;opacity:.85;padding:0 2px;cursor:default;}
.banner-eyebrow{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.22);color:#fff;border-radius:var(--radius-full);padding:5px 15px;font-size:13px;font-weight:600;letter-spacing:.04em;white-space:nowrap;}
.page-banner h1{margin:18px 0 14px;font-size:36px;line-height:1.28;font-weight:800;letter-spacing:.02em;}
.banner-lead{max-width:690px;font-size:16px;line-height:1.85;color:#e2edf3;margin:0 0 28px;}
.banner-actions{display:flex;flex-wrap:wrap;gap:12px;}
.section-head{margin-bottom:32px;}
.section-head .eyebrow{margin-bottom:12px;padding:4px 13px;}
.section-title{font-size:28px;line-height:1.35;font-weight:800;color:var(--color-text);margin:0;}
.section-sub{font-size:16px;color:var(--color-text-secondary);max-width:760px;margin-top:10px;}
.channel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.feature-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:26px;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;height:100%;display:flex;flex-direction:column;}
.feature-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-card-hover);border-color:#c6d9e3;}
.feature-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px;}
.feature-icon{width:44px;height:44px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;background:var(--color-primary-light);color:var(--color-primary);font-size:18px;}
.feature-card h3{font-size:19px;font-weight:700;margin:0 0 10px;line-height:1.4;}
.feature-card p{font-size:15px;line-height:1.75;color:var(--color-text-secondary);margin:0 0 18px;flex:1 1 auto;}
.card-bottom{display:flex;align-items:center;justify-content:space-between;gap:8px;border-top:1px solid #eef3f7;padding-top:14px;font-size:14px;}
.card-bottom a{font-weight:600;}
.text-link{display:inline-flex;align-items:center;gap:6px;padding:4px 0;font-weight:600;color:var(--color-primary);font-size:14px;}
.text-link:hover{color:var(--color-primary-dark);}
.text-link i{font-size:11px;transition:transform .22s ease;}
.text-link:hover i{transform:translateX(3px);}
.quick-info{background:var(--color-primary-light);border:1px solid #d4e4ee;border-radius:var(--radius-card);padding:28px;height:100%;}
.quick-info h3{margin-top:0;font-size:20px;font-weight:800;margin-bottom:12px;}
.quick-info p,.quick-info li{color:var(--color-text-secondary);}
.quick-info ul{margin:16px 0 0;padding:0;list-style:none;display:grid;gap:12px;}
.quick-info li{display:flex;gap:11px;font-size:15px;line-height:1.6;color:var(--color-text);}
.quick-info li i{color:var(--color-primary);margin-top:5px;}
.media-card{border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);border:1px solid var(--color-border);background:var(--color-surface);}
.media-card .media-img{overflow:hidden;position:relative;}
.media-card .media-img img{width:100%;object-fit:cover;transition:transform .5s ease;}
.media-card:hover .media-img img{transform:scale(1.02);}
.media-card-body{padding:22px;}
.media-card-body h3{margin:8px 0 9px;font-size:20px;font-weight:800;}
.media-card-body p{margin:0;color:var(--color-text-secondary);font-size:15px;line-height:1.75;}
.media-label{position:absolute;left:14px;top:14px;z-index:2;background:rgba(255,255,255,.92);color:var(--color-primary-dark);border-radius:var(--radius-full);font-size:13px;font-weight:700;padding:4px 13px;}
.intro-grid{display:grid;grid-template-columns:1.45fr .8fr;gap:32px;align-items:stretch;}
.mini-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.mini-card{background:#fff;border:1px solid var(--color-border);border-radius:12px;padding:20px;box-shadow:0 2px 8px rgba(10,60,90,.04);}
.mini-card b{display:block;font-size:23px;color:var(--color-primary);font-weight:800;margin-bottom:6px;}
.mini-card span{font-size:13px;color:var(--color-text-secondary);line-height:1.5;display:block;}
.process-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;counter-reset:step;}
.step-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:26px 22px;position:relative;}
.step-num{width:34px;height:34px;border-radius:10px;background:var(--color-primary-dark);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:17px;letter-spacing:.02em;margin-bottom:15px;}
.step-card h3{font-size:16px;font-weight:700;margin:0 0 8px;}
.step-card p{font-size:14px;line-height:1.7;color:var(--color-text-secondary);margin:0;}
.settings-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.set-card{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-card);padding:22px;display:flex;gap:15px;transition:transform .22s ease,box-shadow .22s ease;}
.set-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card-hover);}
.set-icon{width:40px;height:40px;flex:0 0 auto;border-radius:11px;background:var(--color-primary-light);color:var(--color-primary);display:flex;align-items:center;justify-content:center;font-size:17px;}
.set-card h3{margin:0 0 5px;font-size:16px;font-weight:700;}
.set-card p{margin:0;font-size:14px;color:var(--color-text-secondary);line-height:1.65;}
.security-panel{background:linear-gradient(120deg,var(--color-primary-dark),#0d3a52);border-radius:var(--radius-card);color:#fff;padding:38px;display:grid;grid-template-columns:1.1fr 1fr;gap:30px;}
.security-panel h3{margin:8px 0 10px;font-size:22px;}
.security-panel p{color:#d8e5ec;font-size:15px;line-height:1.75;margin-bottom:0;}
.security-tips{padding-left:22px;border-left:1px solid rgba(255,255,255,.2);}
.security-tips li{margin:11px 0;font-size:15px;color:#e5eef3;display:flex;gap:10px;list-style:none;}
.security-tips li i{color:#f8ba7c;margin-top:5px;}
.security-tips ul{margin:14px 0 0;padding:0;list-style:none;}
.rank-list{border-radius:var(--radius-card);background:#fff;box-shadow:var(--shadow-card);border:1px solid var(--color-border);overflow:hidden;}
.rank-item{display:flex;align-items:center;gap:16px;padding:20px 24px;border-bottom:1px solid #edf2f6;transition:background .2s ease;}
.rank-item:hover{background:var(--color-primary-light);}
.rank-item:last-child{border-bottom:0;}
.rank-num{font-size:30px;font-weight:800;color:#b8d0dd;width:42px;flex:0 0 auto;line-height:1;font-feature-settings:"tnum";}
.rank-item:nth-child(-n+3) .rank-num{color:var(--color-primary);}
.rank-content{min-width:0;}
.rank-content a{display:block;font-size:16px;font-weight:700;color:var(--color-text);margin-bottom:4px;line-height:1.4;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.rank-content a:hover{color:var(--color-primary);}
.rank-content p{margin:0;color:var(--color-text-secondary);font-size:13px;line-height:1.6;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.rank-tag{margin-left:auto;flex:0 0 auto;}
.related-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-card);box-shadow:var(--shadow-card);overflow:hidden;display:flex;height:100%;flex-direction:column;transition:transform .25s ease,box-shadow .25s ease;}
.related-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-card-hover);}
.related-card .card-img{overflow:hidden;aspect-ratio:16/9;background:var(--color-primary-light);}
.related-card .card-img img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease;}
.related-card:hover .card-img img{transform:scale(1.03);}
.related-card-body{padding:20px 20px 22px;display:flex;flex:1;flex-direction:column;}
.related-card-body h3{font-size:18px;font-weight:700;margin:0 0 8px;line-height:1.4;}
.related-card-body p{font-size:14px;color:var(--color-text-secondary);line-height:1.7;margin:0 0 15px;flex:1;}
.related-groups{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.faq-wrap{max-width:930px;margin:0 auto;display:grid;gap:14px;}
.faq-item{background:var(--color-surface);border:1px solid var(--color-border);border-radius:12px;box-shadow:0 2px 6px rgba(10,60,90,.03);overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;}
.faq-item[open]{box-shadow:var(--shadow-card);border-color:#cce0e9;}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:14px;padding:18px 22px;font-weight:700;font-size:16px;color:var(--color-text);position:relative;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .faq-icon{width:26px;height:26px;border-radius:8px;background:var(--color-primary-light);color:var(--color-primary);display:flex;align-items:center;justify-content:center;font-size:13px;flex:0 0 auto;transition:transform .25s ease,background .25s ease;}
.faq-item[open] summary .faq-icon{background:var(--color-primary);color:#fff;transform:rotate(45deg);}
.faq-answer{padding:0 24px 20px 62px;font-size:15px;color:var(--color-text-secondary);line-height:1.85;}
.cta-block{background:var(--color-primary-dark);border-radius:var(--radius-card);padding:42px 46px;display:flex;align-items:center;justify-content:space-between;gap:24px;color:#fff;box-shadow:0 18px 40px rgba(10,42,60,.18);position:relative;overflow:hidden;}
.cta-block::after{content:"";position:absolute;right:-80px;top:-60px;width:200px;height:200px;border-radius:50%;background:rgba(232,139,60,.2);}
.cta-block-text{position:relative;z-index:2;}
.cta-block-tag{font-size:13px;color:#f8c89d;font-weight:700;display:block;margin-bottom:6px;}
.cta-block h2{font-size:25px;line-height:1.4;margin:0 0 10px;}
.cta-block p{color:#d6e3ea;margin:0;font-size:15px;line-height:1.7;max-width:620px;}
.cta-block-actions{position:relative;z-index:2;display:flex;flex-direction:column;gap:12px;flex:0 0 auto;}
.site-footer{background:#0a2232;color:#bfd4df;margin-top:80px;padding-top:58px;}
.footer-grid{display:grid;grid-template-columns:1.2fr .7fr .8fr;gap:42px;padding-bottom:38px;}
.footer-brand-name{font-size:19px;font-weight:800;color:#fff;display:flex;align-items:center;gap:10px;margin-bottom:13px;}
.footer-brand-icon{width:30px;height:30px;border-radius:9px;background:#fff;color:var(--color-primary-dark);display:flex;align-items:center;justify-content:center;font-size:14px;}
.footer-desc{font-size:14px;color:#9eb6c4;line-height:1.8;max-width:320px;margin:0;}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin:0 0 14px;letter-spacing:.03em;}
.footer-links{list-style:none;margin:0;padding:0;display:grid;gap:10px;}
.footer-links a{font-size:14px;color:#9fb7c5;display:inline-block;padding:2px 0;transition:color .2s ease;}
.footer-links a:hover{color:#fff;}
.footer-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;border-top:1px solid rgba(255,255,255,.09);padding:20px 0 24px;font-size:13px;color:#7e9aab;}
.footer-bottom p{margin:0;}
@media(max-width:64em){
  .process-steps{grid-template-columns:repeat(2,1fr);gap:18px;}
  .channel-grid .feature-card:nth-child(3){grid-column:span 2;}
}
@media(max-width:52em){
  .channel-grid{grid-template-columns:repeat(2,1fr);}
  .channel-grid .feature-card:nth-child(3){grid-column:auto;}
  .intro-grid{grid-template-columns:1fr;}
  .settings-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .hot-keys{display:none;}
}
@media(max-width:40em){
  :root{--space-block:54px;}
  .nav-toggle{display:inline-flex;}
  .header-nav{display:none;position:absolute;left:0;right:0;top:100%;background:#fff;border-top:1px solid var(--color-border);box-shadow:0 18px 30px rgba(10,42,60,.12);max-height:calc(100vh - 60px);overflow:auto;}
  .site-header.nav-open .header-nav{display:block;}
  .header-nav-inner{flex-direction:column;align-items:stretch;min-height:auto;padding:14px 0 18px;gap:12px;}
  .main-nav ul{flex-direction:column;align-items:stretch;gap:2px;}
  .main-nav a{display:block;padding:11px 14px;border-radius:10px;border-bottom:0;margin-bottom:0;font-size:15px;font-weight:600;}
  .main-nav li.active a{background:var(--color-primary-light);color:var(--color-primary);border-bottom:0;}
  .hot-keys{display:flex;flex-wrap:wrap;gap:8px;padding:6px 14px;border-top:1px dashed var(--color-border);}
  .hot-label{margin-right:1px;}
  .page-banner{padding:58px 0 48px;background:linear-gradient(0deg,rgba(10,42,60,.9) 0%,rgba(10,42,60,.55) 60%,rgba(10,42,60,.25) 100%),url("/assets/images/backpic/back-2.webp") center/cover no-repeat;background-color:var(--color-primary-dark);}
  .page-banner h1{font-size:27px;}
  .banner-lead{font-size:15px;}
  .channel-grid,.settings-grid,.process-steps,.related-groups{grid-template-columns:1fr;}
  .mini-cards{grid-template-columns:1fr 1fr;}
  .security-panel{grid-template-columns:1fr;}
  .cta-block{flex-direction:column;align-items:flex-start;padding:32px 24px;}
  .cta-block p{font-size:14px;}
  .brand-name{font-size:16px;}
  .brand-icon{width:27px;height:27px;font-size:12px;}
  .btn-primary{font-size:14px;padding:10px 16px;}
  .faq-answer{padding-left:22px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;}
  .section-title{font-size:23px;}
  .block-pad{padding:44px 0;}
  .block-pad-small{padding:34px 0;}
}

/* roulang page: category2 */
:root {
            --color-bg: #F7FAFC;
            --color-surface: #FFFFFF;
            --color-primary: #1B6D92;
            --color-primary-dark: #0A2A3C;
            --color-primary-light: #E8F1F7;
            --color-accent: #E88B3C;
            --color-text: #1F3442;
            --color-text-secondary: #5A707F;
            --color-border: #E1E9EF;
            --radius-lg: 14px;
            --radius-md: 10px;
            --radius-pill: 999px;
            --shadow-card: 0 2px 10px rgba(10, 60, 90, 0.05);
            --shadow-hover: 0 12px 28px rgba(10, 60, 90, 0.12);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
            --space-section: 84px;
            --space-section-mobile: 52px;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            margin: 0;
            background: var(--color-bg);
            color: var(--color-text);
            font-family: var(--font-sans);
            line-height: 1.7;
            text-rendering: optimizeLegibility;
            -webkit-font-smoothing: antialiased;
        }

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

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

        a:hover,
        a:focus-visible {
            color: #14597A;
            outline: none;
        }

        a:focus-visible {
            box-shadow: 0 0 0 3px rgba(27, 109, 146, 0.25);
            border-radius: 4px;
        }

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

        button {
            border: none;
        }

        ul,
        ol,
        p,
        dl,
        dd,
        figure {
            margin: 0;
            padding: 0;
        }

        .container {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: saturate(1.4) blur(14px);
            box-shadow: 0 1px 0 rgba(10, 60, 90, 0.06);
        }

        .header-primary {
            border-bottom: 1px solid var(--color-border);
        }

        .header-primary-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 52px;
            gap: 24px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: var(--color-text);
            font-weight: 800;
            letter-spacing: 0.02em;
            font-size: 1.2rem;
            line-height: 1.3;
        }

        .brand:hover,
        .brand:focus-visible {
            color: var(--color-primary);
        }

        .brand-icon {
            flex: 0 0 auto;
            width: 36px;
            height: 36px;
            border-radius: var(--radius-md);
            background: var(--color-primary-dark);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.05rem;
        }

        .brand-name {
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .header-tools {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .header-tools .btn {
            flex: 0 0 auto;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-md);
            padding: 10px 18px;
            font-size: 0.95rem;
            font-weight: 600;
            line-height: 1.2;
            border: 1px solid transparent;
            cursor: pointer;
            transition: background 0.25s ease, box-shadow 0.25s ease, color 0.25s ease, transform 0.2s ease;
            text-align: center;
        }

        .btn:focus-visible {
            outline: none;
            box-shadow: 0 0 0 3px rgba(27, 109, 146, 0.3);
        }

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

        .btn-primary:hover,
        .btn-primary:focus-visible {
            background: #267FA6;
            border-color: #267FA6;
            color: #fff;
        }

        .btn-primary:active {
            background: #155A79;
            transform: translateY(1px);
        }

        .btn-secondary {
            background: var(--color-surface);
            border-color: var(--color-border);
            color: var(--color-text);
        }

        .btn-secondary:hover,
        .btn-secondary:focus-visible {
            background: var(--color-primary-light);
            border-color: #C6D9E6;
            color: var(--color-primary-dark);
        }

        .btn-secondary:active {
            background: #DCE9F2;
            transform: translateY(1px);
        }

        .btn-accent {
            background: var(--color-accent);
            border-color: var(--color-accent);
            color: #172A35;
        }

        .btn-accent:hover,
        .btn-accent:focus-visible {
            background: #F09A52;
            border-color: #F09A52;
            color: #101C24;
        }

        .btn-accent:active {
            background: #D17A2E;
            transform: translateY(1px);
        }

        .header-nav {
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(8px);
        }

        .header-nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            min-height: 48px;
        }

        .main-nav ul {
            list-style: none;
            display: flex;
            gap: 2px;
            flex-wrap: nowrap;
            margin-bottom: 0;
        }

        .main-nav a {
            display: inline-block;
            position: relative;
            padding: 12px 14px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text);
            border-radius: 8px 8px 0 0;
            transition: color 0.2s ease, background 0.2s ease;
        }

        .main-nav a:hover {
            background: var(--color-primary-light);
            color: var(--color-primary-dark);
        }

        .main-nav a::after {
            content: "";
            display: block;
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 0;
            height: 3px;
            border-radius: 4px 4px 0 0;
            background: transparent;
        }

        .main-nav .active a {
            color: var(--color-primary);
            font-weight: 700;
            background: var(--color-primary-light);
        }

        .main-nav .active a::after {
            background: var(--color-primary);
        }

        .hot-keys {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: nowrap;
            flex-shrink: 1;
            overflow-x: auto;
            scrollbar-width: none;
        }

        .hot-keys::-webkit-scrollbar {
            display: none;
        }

        .hot-label {
            white-space: nowrap;
            font-size: 0.8rem;
            color: var(--color-text-secondary);
            background: var(--color-bg);
            padding: 4px 10px;
            border-radius: var(--radius-pill);
            border: 1px solid var(--color-border);
        }

        .hot-keys a {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            white-space: nowrap;
            padding: 5px 12px;
            border-radius: var(--radius-pill);
            font-size: 0.84rem;
            font-weight: 500;
            color: var(--color-primary-dark);
            background: #F1F6F9;
            border: 1px solid transparent;
        }

        .hot-keys a:hover {
            background: var(--color-primary-light);
            border-color: #C8DCEC;
            color: var(--color-primary);
        }

        .nav-toggle {
            display: none;
            background: transparent;
            width: 42px;
            height: 42px;
            border-radius: 8px;
            border: 1px solid var(--color-border);
            align-items: center;
            justify-content: center;
            cursor: pointer;
            flex-direction: column;
            gap: 5px;
        }

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

        .nav-toggle:focus-visible {
            outline: none;
            box-shadow: 0 0 0 3px rgba(27, 109, 146, 0.2);
        }

        .nav-toggle .bar {
            display: block;
            width: 18px;
            height: 2px;
            background: var(--color-text);
            border-radius: 2px;
            transition: transform 0.2s ease, opacity 0.2s ease;
        }

        .nav-toggle.is-active .bar:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-toggle.is-active .bar:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.is-active .bar:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .category-banner {
            color: #fff;
            background: linear-gradient(100deg, rgba(10, 42, 60, 0.95), rgba(10, 42, 60, 0.72) 45%, rgba(10, 42, 60, 0.2) 100%), url('/assets/images/backpic/back-1.png') center / cover no-repeat;
        }

        .category-banner-inner {
            padding-top: 72px;
            padding-bottom: 64px;
        }

        .breadcrumb {
            display: flex;
            list-style: none;
            gap: 8px;
            align-items: center;
            font-size: 0.86rem;
            margin-bottom: 22px;
            color: rgba(255, 255, 255, 0.65);
        }

        .breadcrumb li {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .breadcrumb li::after {
            content: "/";
            opacity: 0.45;
        }

        .breadcrumb li:last-child::after {
            display: none;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.8);
        }

        .breadcrumb a:hover {
            color: #fff;
            text-decoration: underline;
            text-underline-offset: 4px;
        }

        .breadcrumb .current {
            color: #fff;
        }

        .category-banner h1 {
            font-size: clamp(2.2rem, 4.2vw, 3.4rem);
            line-height: 1.2;
            font-weight: 800;
            color: #fff;
            margin: 0 0 18px;
            letter-spacing: 0.01em;
            max-width: 720px;
        }

        .banner-lead {
            font-size: clamp(1rem, 1.5vw, 1.18rem);
            line-height: 1.85;
            color: rgba(255, 255, 255, 0.88);
            max-width: 680px;
            margin: 0 0 30px;
        }

        .banner-actions {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
        }

        .banner-actions .btn {
            backdrop-filter: blur(4px);
        }

        .banner-actions .btn-light {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.4);
            color: #fff;
        }

        .banner-actions .btn-light:hover,
        .banner-actions .btn-light:focus-visible {
            background: rgba(255, 255, 255, 0.2);
            border-color: rgba(255, 255, 255, 0.7);
            color: #fff;
        }

        .section {
            padding-top: var(--space-section);
            padding-bottom: var(--space-section);
        }

        .section-alt {
            background: var(--color-surface);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }

        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 24px;
            margin-bottom: 34px;
            flex-wrap: wrap;
        }

        .section-title {
            font-size: clamp(1.6rem, 2.6vw, 2.1rem);
            line-height: 1.4;
            font-weight: 800;
            color: var(--color-text);
            margin: 0;
            letter-spacing: -0.01em;
        }

        .section-sub {
            display: block;
            margin-top: 8px;
            color: var(--color-text-secondary);
            font-size: 0.98rem;
            max-width: 640px;
        }

        .section-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.92rem;
            color: var(--color-primary);
            border: 1px solid var(--color-border);
            background: var(--color-surface);
            padding: 8px 14px;
            border-radius: var(--radius-pill);
            transition: all 0.2s ease;
        }

        .section-link:hover {
            border-color: var(--color-primary);
            background: var(--color-primary-light);
            color: var(--color-primary);
        }

        .overview-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }

        .overview-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
            height: 100%;
        }

        .overview-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: #D1E0EB;
        }

        .overview-icon {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--color-primary-light);
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            margin-bottom: 20px;
        }

        .overview-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin: 0 0 12px;
            color: var(--color-text);
        }

        .overview-card p {
            font-size: 0.94rem;
            line-height: 1.8;
            color: var(--color-text-secondary);
            margin: 0;
        }

        .reel-wrap {
            position: relative;
        }

        .cover-reel {
            display: flex;
            gap: 18px;
            overflow-x: auto;
            scroll-snap-type: x mandatory;
            padding: 4px 4px 20px;
            margin: -4px -12px 0;
            scrollbar-width: thin;
            scrollbar-color: var(--color-primary-light) transparent;
        }

        .cover-reel::-webkit-scrollbar {
            height: 6px;
        }

        .cover-reel::-webkit-scrollbar-track {
            background: transparent;
        }

        .cover-reel::-webkit-scrollbar-thumb {
            background: var(--color-primary-light);
            border-radius: 12px;
        }

        .cover-reel .cover-card {
            flex: 0 0 240px;
            scroll-snap-align: start;
        }

        .cover-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }

        .cover-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
        }

        .cover-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 3 / 4;
            background: var(--color-primary-light);
        }

        .cover-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.45s ease;
        }

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

        .cover-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 1;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 11px;
            font-size: 0.76rem;
            font-weight: 600;
            line-height: 1.3;
            border-radius: var(--radius-pill);
            background: var(--color-primary-light);
            color: var(--color-primary-dark);
            border: 1px solid transparent;
        }

        .badge-dark {
            background: rgba(10, 42, 60, 0.78);
            color: #fff;
            border-color: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(5px);
        }

        .badge-light {
            background: #fff;
            color: var(--color-primary-dark);
            border-color: var(--color-border);
        }

        .badge-accent {
            background: var(--color-accent);
            color: #17272F;
        }

        .cover-card-body {
            padding: 16px 16px 18px;
        }

        .cover-card-body h3 {
            font-size: 1rem;
            line-height: 1.5;
            font-weight: 700;
            color: var(--color-text);
            margin: 0 0 8px;
        }

        .cover-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 0.8rem;
            color: var(--color-text-secondary);
        }

        .cover-meta .dot {
            width: 3px;
            height: 3px;
            border-radius: 50%;
            background: #B5C5D1;
        }

        .featured-cols {
            display: grid;
            grid-template-columns: 1.5fr 1fr;
            gap: 22px;
            align-items: stretch;
        }

        .video-feature-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-card);
            transition: box-shadow 0.25s ease, transform 0.25s ease;
        }

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

        .video-feature-media {
            position: relative;
            aspect-ratio: 16 / 10;
            background: var(--color-primary-light);
            overflow: hidden;
        }

        .video-feature-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .video-feature-card:hover .video-feature-media img {
            transform: scale(1.03);
        }

        .video-feature-media::after {
            content: "";
            position: absolute;
            inset: auto 0 0 0;
            height: 46%;
            background: linear-gradient(transparent, rgba(10, 30, 44, 0.45));
            pointer-events: none;
        }

        .video-feature-info {
            padding: 22px 24px 24px;
        }

        .video-feature-info h3 {
            font-size: 1.3rem;
            line-height: 1.5;
            margin: 10px 0 8px;
        }

        .video-feature-info p {
            color: var(--color-text-secondary);
            font-size: 0.93rem;
            line-height: 1.75;
            margin-bottom: 16px;
        }

        .figure-text {
            color: var(--color-text);
            font-size: 0.84rem;
            margin-top: 6px;
        }

        .video-stack {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }

        .mini-video-card {
            display: grid;
            grid-template-columns: 142px 1fr;
            gap: 14px;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            padding: 10px;
            box-shadow: var(--shadow-card);
            transition: transform 0.25s ease, box-shadow 0.25s ease;
            align-items: center;
        }

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

        .mini-square {
            width: 142px;
            aspect-ratio: 16 / 10;
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--color-primary-light);
        }

        .mini-square img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }

        .mini-video-card:hover .mini-square img {
            transform: scale(1.04);
        }

        .mini-content .badge {
            margin-bottom: 7px;
        }

        .mini-content h3 {
            font-size: 0.98rem;
            line-height: 1.55;
            font-weight: 700;
            margin: 0 0 5px;
        }

        .mini-content p {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            line-height: 1.5;
        }

        .steps-section {
            background:
                linear-gradient(135deg, rgba(10, 42, 60, 0.95), rgba(23, 64, 85, 0.9)),
                url('/assets/images/backpic/back-3.png') center / cover no-repeat;
            color: #fff;
        }

        .steps-section .section-title {
            color: #fff;
        }

        .steps-section .section-sub {
            color: rgba(255, 255, 255, 0.7);
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            color: #fff;
        }

        .step-item {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: var(--radius-lg);
            padding: 26px 22px;
            backdrop-filter: blur(6px);
        }

        .step-number {
            display: flex;
            width: 34px;
            height: 34px;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--color-accent);
            color: #17272F;
            font-weight: 800;
            font-size: 1rem;
            margin-bottom: 15px;
        }

        .step-item h3 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 9px;
            line-height: 1.4;
        }

        .step-item p {
            color: rgba(255, 255, 255, 0.72);
            font-size: 0.9rem;
            line-height: 1.75;
        }

        .benefit-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
            margin-top: 10px;
        }

        .benefit-item {
            background: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 26px 22px;
            position: relative;
            transition: transform 0.2s ease, background 0.2s ease;
        }

        .benefit-item:hover {
            background: var(--color-surface);
            border-color: #C9DEEB;
            transform: translateY(-3px);
        }

        .benefit-item .step-number {
            background: var(--color-primary-light);
            color: var(--color-primary);
        }

        .benefit-item h3 {
            font-size: 1rem;
            margin-bottom: 9px;
        }

        .benefit-item p {
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            line-height: 1.75;
        }

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

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

        .faq-item:hover {
            border-color: #C6DAE8;
            box-shadow: 0 6px 18px rgba(10, 60, 90, 0.06);
        }

        .faq-item input {
            position: absolute;
            opacity: 0;
            pointer-events: none;
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            cursor: pointer;
            width: 100%;
            padding: 20px 22px;
            text-align: left;
            background: transparent;
            font-size: 1rem;
            line-height: 1.5;
            font-weight: 700;
            color: var(--color-text);
        }

        .faq-question:hover,
        .faq-question:focus-visible {
            background: var(--color-bg);
            outline: none;
        }

        .faq-question::after {
            content: "\f054";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 0.78rem;
            color: var(--color-primary);
            transition: transform 0.25s ease;
            flex: 0 0 auto;
        }

        .faq-item input:checked~.faq-question::after {
            transform: rotate(90deg);
        }

        .faq-answer {
            display: none;
            padding: 0 22px 22px;
            background: var(--color-bg);
            border-top: 1px dashed var(--color-border);
            line-height: 1.9;
            color: var(--color-text-secondary);
        }

        .faq-item input:checked~.faq-answer {
            display: block;
            color: var(--color-text-secondary);
        }
        
        .faq-item input:focus-visible~.faq-question {
            outline: 2px solid rgba(27, 109, 146, 0.2);
            outline-offset: -2px;
        }

        .cta-panel {
            border-radius: 22px;
            overflow: hidden;
            background: linear-gradient(110deg, rgba(10, 42, 60, 0.98), rgba(15, 60, 75, 0.92)), url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
            color: #fff;
        }

        .cta-panel-inner {
            padding: 54px 48px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 28px;
            position: relative;
        }

        .cta-copy {
            flex: 1 1 460px;
        }

        .cta-copy h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            line-height: 1.45;
            margin: 0 0 14px;
            font-weight: 800;
        }

        .cta-copy p {
            font-size: 1rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.82);
            max-width: 620px;
        }

        .cta-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        .cta-actions .btn {
            padding: 13px 22px;
            font-size: 1rem;
        }

        .site-footer {
            background: #082432;
            color: #C7D2DB;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2.1fr 1.2fr 1.3fr;
            gap: 30px;
            padding-top: 56px;
            padding-bottom: 44px;
        }

        .footer-brand {
            max-width: 360px;
        }

        .footer-brand-name {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.15rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-brand-icon {
            width: 36px;
            height: 36px;
            background: #fff;
            color: #0A2A3C;
            border-radius: var(--radius-md);
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }

        .footer-desc {
            font-size: 0.92rem;
            line-height: 1.9;
            color: #A1B6C3;
        }

        .footer-title {
            font-size: 1rem;
            color: #fff;
            font-weight: 700;
            margin-bottom: 18px;
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-links a {
            color: #A9BCC8;
            font-size: 0.9rem;
            transition: color 0.2s ease;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .footer-links a::before {
            content: "";
            width: 4px;
            height: 4px;
            background: #5D7E91;
            border-radius: 2px;
            flex: 0 0 auto;
        }

        .footer-links a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0 26px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 14px;
            color: #75909D;
            font-size: 0.81rem;
            flex-wrap: wrap;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .overview-cards {
                grid-template-columns: repeat(3, 1fr);
                gap: 16px;
            }

            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .benefit-list {
                grid-template-columns: repeat(2, 1fr);
            }

            .header-nav-inner {
                align-items: flex-start;
                flex-direction: column;
                padding-top: 4px;
                padding-bottom: 12px;
                gap: 4px;
            }

            .main-nav {
                width: 100%;
                overflow-x: auto;
            }

            .main-nav ul {
                flex-wrap: nowrap;
                width: max-content;
            }

            .hot-keys {
                padding-bottom: 2px;
            }
        }

        @media (max-width: 782px) {
            :root {
                --space-section: 60px;
                --space-section-mobile: 44px;
            }

            .header-nav {
                display: none;
            }

            .header-nav.is-active {
                display: block;
            }

            .nav-toggle {
                display: inline-flex;
            }

            .header-primary-inner {
                min-height: 54px;
            }

            .header-nav-inner {
                min-height: 0;
            }

            .main-nav ul {
                flex-direction: column;
                padding: 10px 0;
                gap: 2px;
            }

            .main-nav a {
                display: block;
                padding: 11px 12px;
                border-radius: 8px;
            }

            .main-nav a::after {
                display: none;
            }

            .main-nav .active a {
                background: var(--color-primary-light);
            }

            .hot-keys {
                width: 100%;
                padding: 4px 0 14px;
            }

            .overview-cards {
                grid-template-columns: 1fr;
            }

            .featured-cols {
                grid-template-columns: 1fr;
            }

            .mini-video-card {
                grid-template-columns: 116px 1fr;
            }

            .mini-square {
                width: 116px;
            }

            .category-banner-inner {
                padding-top: 52px;
                padding-bottom: 46px;
            }

            .cta-panel-inner {
                padding: 36px 24px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 34px;
                padding-top: 44px;
            }

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

            .benefit-list {
                grid-template-columns: 1fr;
            }
        }

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

            .section {
                padding-top: 46px;
                padding-bottom: 46px;
            }

            .brand-name {
                font-size: 1rem;
                max-width: 170px;
            }

            .header-tools .btn .btn-text {
                display: none;
            }

            .header-tools .btn {
                width: 40px;
                height: 40px;
                padding: 0;
                border-radius: 8px;
            }

            .cover-reel .cover-card {
                flex-basis: 70vw;
            }

            .mini-video-card {
                grid-template-columns: 96px 1fr;
                padding: 8px;
            }

            .mini-square {
                width: 96px;
            }

            .section-head {
                flex-direction: column;
                align-items: flex-start;
                margin-bottom: 24px;
            }

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

            .cta-actions {
                width: 100%;
            }

            .footer-bottom {
                justify-content: center;
                text-align: center;
            }

            .banner-actions .btn {
                flex: 1 1 auto;
            }
        }

        @media (min-width: 1020px) {
            .cover-reel .cover-card:nth-child(n + 5) {
                display: none;
            }
        }

/* roulang page: category3 */
:root {
            --color-bg: #F7FAFC;
            --color-surface: #FFFFFF;
            --color-primary: #1B6D92;
            --color-primary-dark: #0A2A3C;
            --color-primary-light: #E8F1F7;
            --color-accent: #E88B3C;
            --color-text: #1F3442;
            --color-text-secondary: #5A707F;
            --color-border: #E1E9EF;
            --radius-lg: 14px;
            --radius-md: 10px;
            --radius-pill: 999px;
            --shadow-1: 0 2px 10px rgba(10, 60, 90, 0.05);
            --shadow-2: 0 12px 28px rgba(10, 60, 90, 0.12);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            margin: 0;
            background: var(--color-bg);
            color: var(--color-text);
            font-family: var(--font-sans);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        h1, h2, h3, h4, h5, h6 {
            margin: 0 0 0.6em;
            color: var(--color-primary-dark);
            font-weight: 700;
            line-height: 1.3;
        }

        p {
            margin: 0 0 16px;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
        }

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

        ul {
            margin: 0;
            padding: 0;
            list-style: none;
        }

        button,
        input {
            font-family: var(--font-sans);
            font-size: 1rem;
        }

        .container {
            width: min(1200px, 100% - 32px);
            margin: 0 auto;
        }

        .section-block {
            padding: 80px 0;
        }

        .bg-soft {
            background: #EEF5F9;
        }

        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 24px;
            margin-bottom: 38px;
        }

        .section-head .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 5px 14px;
            background: var(--color-primary-light);
            color: var(--color-primary);
            border-radius: var(--radius-pill);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.4px;
        }

        .section-head h2 {
            font-size: clamp(24px, 2.4vw, 30px);
            margin: 12px 0 0;
        }

        .section-head-desc {
            color: var(--color-text-secondary);
            max-width: 740px;
            margin: 12px 0 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 22px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.95rem;
            line-height: 1;
            border: 1px solid transparent;
            cursor: pointer;
            transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
        }

        .btn:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 3px;
        }

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

        .btn-primary:hover {
            background: #176080;
            transform: translateY(-2px);
            box-shadow: var(--shadow-2);
        }

        .btn-primary:active {
            transform: translateY(0);
            background: #11495F;
        }

        .btn-accent {
            background: var(--color-accent);
            color: #1B2430;
        }

        .btn-accent:hover {
            background: #D4772B;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 22px rgba(220, 120, 40, 0.25);
        }

        .btn-accent:active {
            transform: translateY(0);
            background: #C26827;
        }

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

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

        .btn-outline-dark {
            background: transparent;
            border-color: rgba(255, 255, 255, 0.75);
            color: #fff;
        }

        .btn-outline-dark:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
        }

        .btn-sm {
            padding: 9px 16px;
            font-size: 0.86rem;
        }

        .badge {
            display: inline-block;
            padding: 3px 10px;
            border-radius: var(--radius-pill);
            background: var(--color-primary-light);
            color: var(--color-primary);
            font-size: 0.78rem;
            font-weight: 600;
            vertical-align: middle;
        }

        .hot-badge {
            background: #FBE9DA;
            color: #B45E1C;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.93);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: 0 0 0 1px rgba(10, 60, 90, 0.04), 0 6px 22px rgba(10, 42, 60, 0.04);
        }

        .header-primary {
            border-bottom: 1px solid rgba(225, 233, 239, 0.8);
        }

        .header-primary-inner {
            min-height: 56px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

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

        .brand-icon,
        .footer-brand-icon {
            width: 36px;
            height: 36px;
            border-radius: 11px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--color-primary);
            color: #fff;
            font-size: 17px;
            box-shadow: 0 4px 12px rgba(27, 109, 146, 0.2);
        }

        .brand-name {
            font-size: 19px;
            font-weight: 800;
            color: var(--color-primary-dark);
            letter-spacing: -0.2px;
            white-space: nowrap;
        }

        .header-tools {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .header-tools .btn {
            padding: 9px 18px;
            border-radius: 9px;
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border: 0;
            background: transparent;
            border-radius: 10px;
            padding: 12px 9px;
            cursor: pointer;
        }

        .nav-toggle:hover,
        .nav-toggle:focus-visible {
            background: var(--color-primary-light);
            outline: none;
        }

        .nav-toggle .bar {
            display: block;
            height: 2px;
            background: var(--color-primary-dark);
            border-radius: 2px;
            margin: 4px 0;
            transition: transform 0.25s ease, opacity 0.25s ease;
        }

        .nav-toggle.is-open .bar:nth-child(1) {
            transform: translateY(6px) rotate(45deg);
        }

        .nav-toggle.is-open .bar:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.is-open .bar:nth-child(3) {
            transform: translateY(-6px) rotate(-45deg);
        }

        .header-nav {
            background: transparent;
            transition: box-shadow 0.2s ease;
        }

        .header-nav-inner {
            min-height: 50px;
            display: flex;
            align-items: center;
            gap: 30px;
        }

        .main-nav ul {
            display: flex;
            align-items: stretch;
            gap: 4px;
            margin: 0;
        }

        .main-nav li {
            position: relative;
        }

        .main-nav li a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 50px;
            padding: 0 16px;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--color-text-secondary);
            border-radius: 0;
            border-bottom: 3px solid transparent;
            transition: color 0.2s ease;
        }

        .main-nav li a:hover {
            color: var(--color-primary);
            background: rgba(232, 241, 247, 0.4);
        }

        .main-nav li.active a {
            color: var(--color-primary);
            border-bottom-color: var(--color-primary);
        }

        .hot-keys {
            margin-left: auto;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .hot-label {
            font-size: 0.78rem;
            color: var(--color-text-secondary);
            background: var(--color-primary-light);
            border-radius: var(--radius-pill);
            padding: 3px 10px;
            font-weight: 600;
        }

        .hot-keys a {
            font-size: 0.82rem;
            padding: 5px 12px;
            background: #F0F5F9;
            border-radius: var(--radius-pill);
            color: var(--color-text-secondary);
            transition: all 0.2s ease;
        }

        .hot-keys a:hover {
            color: var(--color-primary);
            background: var(--color-primary-light);
        }

        .hot-keys a:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        /* Page banner */
        .page-banner {
            position: relative;
            padding: 62px 0 54px;
            background:
                linear-gradient(100deg, rgba(10, 42, 60, 0.94) 5%, rgba(10, 42, 60, 0.68) 58%, rgba(10, 42, 60, 0.42) 100%),
                url('/assets/images/backpic/back-1.png') center / cover no-repeat;
            color: #fff;
            border-bottom: 4px solid var(--color-primary-light);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 24px;
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.86rem;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.8);
            transition: color 0.2s ease;
        }

        .breadcrumb a:hover {
            color: #fff;
        }

        .breadcrumb i {
            font-size: 0.64rem;
            color: rgba(255, 255, 255, 0.45);
        }

        .breadcrumb span {
            color: #fff;
        }

        .page-banner h1 {
            color: #fff;
            margin: 0 0 8px;
            font-size: clamp(30px, 4vw, 42px);
            letter-spacing: 1px;
        }

        .page-banner .banner-desc {
            max-width: 760px;
            color: rgba(255, 255, 255, 0.88);
            font-size: 1.1rem;
            line-height: 1.8;
            margin: 0 0 28px;
        }

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

        /* Cards */
        .help-entry-card {
            height: 100%;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-1);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }

        .help-entry-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-2);
        }

        .cover-img {
            position: relative;
            aspect-ratio: 4 / 3;
            overflow: hidden;
            background: var(--color-primary-light);
        }

        .cover-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }

        .help-entry-card:hover .cover-img img {
            transform: scale(1.03);
        }

        .cover-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 42, 60, 0.06) 0%, transparent 40%, rgba(10, 42, 60, 0.28) 100%);
            pointer-events: none;
        }

        .card-content {
            padding: 24px 20px 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .card-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 28px;
            height: 28px;
            background: var(--color-primary-light);
            color: var(--color-primary);
            border-radius: 9px;
            font-weight: 700;
            font-size: 0.84rem;
            margin-bottom: 14px;
        }

        .card-content h3 {
            font-size: 1.18rem;
            margin: 0 0 10px;
        }

        .card-content p {
            color: var(--color-text-secondary);
            font-size: 0.92rem;
            line-height: 1.75;
            margin: 0 0 16px;
            flex: 1;
        }

        .card-link {
            font-size: 0.88rem;
            font-weight: 700;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .card-link:hover {
            color: var(--color-primary-dark);
        }

        /* Featured list */
        .feature-block {
            display: grid;
            grid-template-columns: 1.08fr 1fr;
            gap: 28px;
        }

        .feature-main {
            background: var(--color-primary-dark);
            border-radius: var(--radius-lg);
            overflow: hidden;
            color: #fff;
            border: 0;
            box-shadow: var(--shadow-2);
            position: relative;
            display: flex;
            flex-direction: column;
        }

        .feature-main-cover {
            position: relative;
            height: 260px;
            overflow: hidden;
        }

        .feature-main-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.82;
            transition: transform 0.3s ease;
        }

        .feature-main:hover .feature-main-cover img {
            transform: scale(1.04);
        }

        .feature-main-cover::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 20%, rgba(10, 42, 60, 0.8) 100%);
        }

        .feature-content {
            padding: 26px 26px 28px;
            margin-top: -30px;
            position: relative;
            z-index: 2;
        }

        .feature-content h3 {
            color: #fff;
            font-size: 1.3rem;
            margin: 0 0 12px;
        }

        .feature-content p {
            color: rgba(255, 255, 255, 0.84);
            font-size: 0.94rem;
            line-height: 1.8;
            margin: 0 0 22px;
        }

        .feature-meta {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.84rem;
            margin-bottom: 12px;
        }

        .feature-list {
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 0;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-1);
            overflow: hidden;
        }

        .feature-list-item {
            display: flex;
            gap: 16px;
            padding: 18px 20px;
            border-bottom: 1px solid var(--color-border);
            transition: background 0.2s ease;
        }

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

        .feature-list-item:hover {
            background: var(--color-primary-light);
        }

        .list-index {
            color: var(--color-primary);
            font-size: 1.4rem;
            font-weight: 800;
            font-variant-numeric: tabular-nums;
            line-height: 1.2;
            width: 44px;
            flex-shrink: 0;
        }

        .list-body h3 {
            font-size: 1rem;
            margin: 0 0 4px;
        }

        .list-body p {
            color: var(--color-text-secondary);
            font-size: 0.86rem;
            margin: 0;
            line-height: 1.65;
        }

        /* Rank section */
        .rank-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }

        .rank-item {
            display: flex;
            align-items: flex-start;
            gap: 18px;
            padding: 22px;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-1);
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }

        .rank-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-2);
        }

        .rank-number {
            font-size: 2.25rem;
            font-weight: 800;
            color: var(--color-primary);
            opacity: 0.22;
            line-height: 1;
            font-variant-numeric: tabular-nums;
            min-width: 50px;
        }

        .rank-item:hover .rank-number {
            opacity: 0.6;
        }

        .rank-info h3 {
            font-size: 1.05rem;
            margin: 0 0 6px;
        }

        .rank-info p {
            color: var(--color-text-secondary);
            font-size: 0.88rem;
            line-height: 1.7;
            margin: 0;
        }

        /* Workflow */
        .workflow-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }

        .workflow-step {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-1);
            padding: 28px 22px 22px;
            position: relative;
            transition: box-shadow 0.25s ease, transform 0.25s ease;
        }

        .workflow-step:hover {
            box-shadow: var(--shadow-2);
            transform: translateY(-4px);
        }

        .workflow-step .step-no {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            font-weight: 700;
            margin-bottom: 18px;
            box-shadow: 0 6px 14px rgba(27, 109, 146, 0.18);
        }

        .workflow-step h3 {
            font-size: 1rem;
            margin: 0 0 8px;
        }

        .workflow-step p {
            font-size: 0.87rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin: 0;
        }

        /* FAQ */
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-1);
            margin-bottom: 14px;
            overflow: hidden;
            transition: box-shadow 0.2s ease;
        }

        .faq-item:hover {
            box-shadow: var(--shadow-2);
        }

        .faq-q {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            background: transparent;
            border: 0;
            padding: 20px 24px;
            text-align: left;
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-primary-dark);
            cursor: pointer;
            transition: background 0.2s ease;
        }

        .faq-q:hover {
            background: rgba(232, 241, 247, 0.5);
        }

        .faq-q:focus-visible,
        .faq-a a:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: -2px;
        }

        .faq-q .faq-icon {
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--color-primary-light);
            color: var(--color-primary);
            transition: transform 0.25s ease, background 0.25s ease;
        }

        .faq-item.open .faq-q .faq-icon {
            transform: rotate(45deg);
            background: var(--color-primary);
            color: #fff;
        }

        .faq-a {
            display: none;
            padding: 0 24px 24px;
            color: var(--color-text-secondary);
            font-size: 0.95rem;
            line-height: 1.9;
        }

        .faq-item.open .faq-a {
            display: block;
            border-top: 1px solid var(--color-border);
            padding-top: 20px;
            background: var(--color-primary-light);
            color: var(--color-text);
        }

        .faq-a p {
            margin: 0 0 8px;
        }

        /* CTA */
        .cta-panel {
            background:
                linear-gradient(115deg, rgba(10, 42, 60, 0.97), rgba(10, 42, 60, 0.72)),
                url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
            border-radius: 18px;
            padding: 52px 52px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 30px;
            box-shadow: var(--shadow-2);
        }

        .cta-panel h2 {
            color: #fff;
            font-size: clamp(24px, 3vw, 32px);
            max-width: 600px;
            margin: 0 0 12px;
        }

        .cta-panel p {
            color: rgba(255, 255, 255, 0.78);
            max-width: 620px;
            margin: 0;
        }

        .cta-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            flex-shrink: 0;
        }

        /* Footer */
        .site-footer {
            background: #0C1D29;
            color: rgba(255, 255, 255, 0.72);
            padding: 60px 0 28px;
            margin-top: 20px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 34px;
        }

        .footer-brand-name {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.18rem;
            color: #fff;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .footer-brand-icon {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
        }

        .footer-desc {
            font-size: 0.9rem;
            max-width: 430px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.66);
        }

        .footer-title {
            font-size: 0.95rem;
            color: #fff;
            font-weight: 700;
            margin-bottom: 17px;
        }

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

        .footer-links a {
            color: rgba(255, 255, 255, 0.63);
            font-size: 0.88rem;
            transition: color 0.2s ease, padding-left 0.2s ease;
        }

        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer-links a:focus-visible {
            outline: 2px solid #fff;
            outline-offset: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 22px;
            display: flex;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.48);
        }

        .footer-bottom p {
            margin: 0;
        }

        /* Responsive */
        @media (max-width: 1023.98px) {
            .workflow-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }

            .section-block {
                padding: 62px 0;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px 28px;
            }
        }

        @media (max-width: 767.98px) {

            .header-primary-inner {
                min-height: 54px;
            }

            .header-tools .btn {
                display: none;
            }

            .nav-toggle {
                display: block;
            }

            .header-nav {
                display: none;
            }

            .header-nav.is-open {
                display: block;
                position: static;
                background: #fff;
                box-shadow: 0 12px 24px rgba(10, 42, 60, 0.1);
                border-top: 1px solid var(--color-border);
                max-height: calc(100vh - 54px);
                overflow-y: auto;
            }

            .header-nav-inner {
                flex-direction: column;
                align-items: stretch;
                padding: 8px 0 20px;
                gap: 4px;
            }

            .main-nav ul {
                flex-direction: column;
            }

            .main-nav li a {
                width: 100%;
                justify-content: flex-start;
                height: 46px;
                padding: 0 12px;
                border-radius: 9px;
                border-bottom: 0;
            }

            .main-nav li a:hover {
                background: var(--color-primary-light);
            }

            .main-nav li.active a {
                background: var(--color-primary-light);
                color: var(--color-primary);
                border-bottom: 0;
            }

            .hot-keys {
                margin-left: 0;
                padding: 4px 12px 0;
                gap: 6px;
            }

            .section-block {
                padding: 48px 0;
            }

            .page-banner {
                padding: 46px 0 42px;
            }

            .page-banner .banner-desc {
                font-size: 0.96rem;
            }

            .section-head {
                flex-direction: column;
                align-items: flex-start;
            }

            .feature-block {
                grid-template-columns: 1fr;
            }

            .feature-main-cover {
                height: 190px;
            }

            .feature-content {
                padding: 22px 20px;
                margin-top: -14px;
            }

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

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

            .cta-panel {
                flex-direction: column;
                padding: 32px 22px;
                align-items: flex-start;
            }

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

            .footer-bottom {
                flex-direction: column;
                gap: 6px;
            }

            .container {
                width: min(100% - 24px, 1200px);
            }
        }

        @media (max-width: 520px) {
            .brand-name {
                font-size: 16px;
            }

            .brand-icon {
                width: 32px;
                height: 32px;
                font-size: 15px;
                border-radius: 9px;
            }

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