/* roulang page: index */
:root {
  --c-primary: #1E4D3B;
  --c-primary-dark: #173D2F;
  --c-primary-light: #32735B;
  --c-accent: #C9A26E;
  --c-bg: #F7F4EE;
  --c-white: #FFFFFF;
  --c-text: #1C2120;
  --c-muted: #697B72;
  --c-border: #E4DFD3;
  --c-footer: #1C2B24;
  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", sans-serif;
  --radius-lg: 10px;
  --radius-md: 6px;
  --radius-pill: 999px;
  --shadow-sm: 0 1px 2px rgba(30, 60, 40, .06);
  --shadow-lg: 0 12px 32px rgba(30, 60, 40, .12);
  --transition: all .25s ease;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
}

a {
  color: var(--c-primary);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--c-primary-dark);
}

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

button,
input {
  font-family: inherit;
}

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

.grid-container {
  max-width: 1200px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 120;
  width: 100%;
  background: rgba(255, 255, 255, .96);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--c-border);
}

.header-top-row {
  min-height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 0;
  transition: max-height .3s ease, padding .3s ease, opacity .3s ease;
}

@media (min-width: 901px) {
  body.scrolled .header-top-row {
    max-height: 0;
    overflow: hidden;
    padding-top: 0;
    padding-bottom: 0;
    opacity: 0;
  }
}

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

.logo-mark {
  width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--c-primary);
  color: #fff;
  font-weight: 800;
  border-radius: var(--radius-md);
  font-size: 19px;
  letter-spacing: 0;
}

.logo-text {
  font-size: 21px;
  font-weight: 800;
  color: var(--c-primary);
  line-height: 1.2;
  letter-spacing: .01em;
}

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

.top-version {
  font-size: 13px;
  color: var(--c-muted);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-pill);
  padding: 4px 12px;
}

.top-download-link {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  background: var(--c-primary);
  padding: 6px 16px;
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.top-download-link:hover {
  background: var(--c-primary-dark);
  color: #fff;
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--c-border);
  background: #fff;
  border-radius: var(--radius-md);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 0;
  margin: 0;
}

.menu-toggle span {
  display: block;
  width: 19px;
  height: 2px;
  background: var(--c-primary);
  border-radius: 3px;
  transition: var(--transition);
}

.site-header.nav-open .menu-toggle span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.site-header.nav-open .menu-toggle span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.header-nav-wrap {
  border-top: 1px solid var(--c-border);
  background: rgba(255, 255, 255, .92);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  min-height: 52px;
}

.header-nav-inner {
  display: flex;
  align-items: center;
  gap: 22px;
  min-height: 52px;
}

.main-nav {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 4px;
  flex: 1;
}

.main-nav>li {
  margin: 0;
}

.main-nav>li>a {
  display: inline-flex;
  align-items: center;
  min-height: 52px;
  padding: 0 16px;
  color: var(--c-text);
  font-size: 16px;
  font-weight: 600;
  border-bottom: 2px solid transparent;
  transition: var(--transition);
}

.main-nav>li>a:hover {
  color: var(--c-primary);
  background: rgba(30, 77, 59, .04);
}

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

.nav-search-cols {
  display: flex;
  align-items: center;
  gap: 12px;
  justify-content: flex-end;
}

.nav-search {
  position: relative;
  display: flex;
  align-items: center;
  width: 220px;
  transition: var(--transition);
}

.nav-search input {
  width: 100%;
  min-height: 40px;
  border: 1px solid #D6D1C4;
  border-radius: var(--radius-pill);
  background: var(--c-bg);
  padding: 0 40px 0 16px;
  font-size: 14px;
  color: var(--c-text);
  transition: var(--transition);
}

.nav-search input:focus {
  border-color: var(--c-primary);
  box-shadow: 0 0 0 3px rgba(30, 77, 59, .1);
  background: #fff;
  outline: none;
}

.nav-search button {
  position: absolute;
  right: 2px;
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
  height: 36px;
  border: 0;
  background: transparent;
  color: var(--c-primary);
  cursor: pointer;
  border-radius: var(--radius-pill);
  font-size: 15px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.hero-section {
  position: relative;
  padding: clamp(58px, 8vw, 96px) 0 64px;
  background: linear-gradient(115deg, rgba(247, 244, 238, .98) 20%, rgba(247, 244, 238, .86) 70%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  overflow: hidden;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: rgba(30, 77, 59, .08);
  color: var(--c-primary);
  border: 1px solid rgba(30, 77, 59, .16);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 22px;
  animation: fadeUp .5s ease both;
}

.hero-eyebrow .status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #4CAF50;
  display: inline-block;
  margin-right: 2px;
}

.hero-main-title {
  font-size: clamp(32px, 5vw, 58px);
  line-height: 1.22;
  font-weight: 800;
  color: var(--c-primary);
  margin: 0 0 22px;
  letter-spacing: .01em;
  animation: fadeUp .5s .08s ease both;
}

.hero-desc {
  font-size: 17px;
  color: #445B50;
  line-height: 1.85;
  max-width: 560px;
  margin: 0 0 30px;
  animation: fadeUp .5s .16s ease both;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  margin-bottom: 18px;
  animation: fadeUp .5s .22s ease both;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 24px;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  transition: var(--transition);
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(1px);
}

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

.btn-primary:hover {
  background: var(--c-primary-dark);
  color: #fff;
  box-shadow: 0 8px 22px rgba(30, 77, 59, .18);
}

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

.btn-accent:hover {
  background: #b28d5c;
  color: #fff;
}

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

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

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

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

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  color: var(--c-muted);
  font-size: 13px;
  padding-bottom: 14px;
  animation: fadeUp .5s .28s ease both;
}

.hero-meta span {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.hero-visual {
  position: relative;
  animation: fadeUp .55s .1s ease both;
}

.hero-device {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: calc(var(--radius-lg) + 10px);
  box-shadow: 0 26px 60px rgba(30, 60, 40, .13);
  padding: 9px 9px 38px;
  max-width: 540px;
  margin-left: auto;
  position: relative;
}

.hero-device::before {
  content: "";
  position: absolute;
  top: 22px;
  left: 50%;
  transform: translateX(-50%);
  width: 92px;
  height: 5px;
  background: var(--c-border);
  border-radius: 3px;
  opacity: .7;
}

.hero-device img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: calc(var(--radius-lg) + 5px);
  background: var(--c-bg);
}

.hero-live-bar {
  margin-top: 54px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 15px 24px;
  background: rgba(255, 255, 255, .75);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-pill);
  padding: 9px 18px;
  font-size: 14px;
  color: #325145;
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.hero-live-bar .live-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
}

.live-status-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #4CAF50;
  box-shadow: 0 0 0 0 rgba(76, 175, 80, .45);
  animation: pulse 2.2s infinite;
}

.hero-live-bar a {
  font-weight: 700;
  color: var(--c-primary);
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(76, 175, 80, .5);
  }
  70% {
    box-shadow: 0 0 0 10px rgba(76, 175, 80, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(76, 175, 80, 0);
  }
}

.section-block {
  padding: clamp(60px, 8vw, 108px) 0;
}

.section-block--white {
  background: #fff;
}

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

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 40px;
}

.section-kicker {
  display: inline-block;
  font-size: 14px;
  font-weight: 700;
  color: var(--c-accent);
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: 8px;
}

.section-head h2,
.section-title {
  margin: 0;
  font-size: clamp(27px, 3.4vw, 38px);
  line-height: 1.3;
  font-weight: 800;
  color: var(--c-primary);
}

.section-head p {
  margin: 8px 0 0;
  max-width: 640px;
  color: var(--c-muted);
  font-size: 16px;
}

.section-more-link {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-weight: 700;
  font-size: 15px;
  color: var(--c-primary);
}

.section-more-link i {
  transition: transform .25s ease;
}

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

.feature-slider {
  position: relative;
}

.slider-viewport {
  overflow: hidden;
  border-radius: calc(var(--radius-lg) + 6px);
}

.slider-track {
  display: flex;
  transition: transform .45s ease;
}

.slider-slide {
  min-width: 100%;
  flex: 0 0 100%;
}

.feature-slide {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: calc(var(--radius-lg) + 6px);
  overflow: hidden;
  min-height: 360px;
}

.feature-slide-visual {
  position: relative;
  overflow: hidden;
  background: #EEEAE1;
  display: flex;
}

.feature-slide-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}

.feature-slide:hover .feature-slide-visual img {
  transform: scale(1.03);
}

.feature-slide-copy {
  padding: clamp(28px, 5vw, 52px);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.feature-tag {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  background: rgba(201, 162, 110, .2);
  color: #9a773f;
  border-radius: var(--radius-pill);
  padding: 4px 12px;
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 16px;
}

.feature-slide-copy h3 {
  font-size: clamp(21px, 2.4vw, 31px);
  line-height: 1.35;
  color: var(--c-primary);
  margin: 0 0 16px;
}

.feature-slide-copy p {
  font-size: 16px;
  line-height: 1.8;
  color: #5B6E64;
  margin-bottom: 22px;
}

.feature-slide-copy a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: fit-content;
  font-weight: 700;
  color: var(--c-primary);
  font-size: 15px;
}

.slider-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: #fff;
  border: 1px solid var(--c-border);
  box-shadow: var(--shadow-sm);
  color: var(--c-primary);
  font-size: 17px;
  cursor: pointer;
  z-index: 5;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.slider-nav:hover {
  background: var(--c-primary);
  border-color: var(--c-primary);
  color: #fff;
}

.slider-prev {
  left: 18px;
}

.slider-next {
  right: 18px;
}

.slider-dots {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 26px;
}

.slider-dots button {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 0;
  padding: 0;
  background: #C9C3B8;
  transition: var(--transition);
  cursor: pointer;
}

.slider-dots button.is-active {
  background: var(--c-primary);
  width: 26px;
  border-radius: var(--radius-pill);
}

.environment-wrap {
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: clamp(28px, 5vw, 64px);
  align-items: center;
}

.environment-intro h2 {
  margin: 0 0 20px;
}

.environment-intro p {
  font-size: 16px;
  color: #43594e;
  line-height: 1.8;
  margin: 0;
}

.environment-card {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.environment-card-head {
  background: var(--c-primary);
  color: #fff;
  padding: 18px 24px;
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
}

.environment-list {
  list-style: none;
  margin: 0;
  padding: 10px 24px;
}

.environment-list li {
  display: flex;
  gap: 16px;
  padding: 15px 0;
  border-bottom: 1px solid #F0ECE2;
  color: #36483e;
  font-size: 15px;
  line-height: 1.6;
}

.environment-list li:last-child {
  border-bottom: 0;
}

.environment-list i {
  color: var(--c-accent);
  width: 20px;
  text-align: center;
  font-size: 17px;
  margin-top: 3px;
}

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

.post-card {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  height: 100%;
}

.post-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: var(--c-primary-light);
}

.post-card-thumb {
  overflow: hidden;
  background: #ECE8DF;
}

.post-card-thumb img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  transition: transform .4s ease;
}

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

.post-card-body {
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}

.post-tag {
  align-self: flex-start;
  background: rgba(30, 77, 59, .09);
  color: var(--c-primary);
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius-pill);
  padding: 4px 10px;
}

.post-card h3,
.post-card-title {
  font-size: 19px;
  line-height: 1.5;
  margin: 0;
  color: var(--c-text);
  font-weight: 700;
}

.post-card h3 a,
.post-card-title a {
  color: inherit;
}

.post-card h3 a:hover,
.post-card-title a:hover {
  color: var(--c-primary);
}

.post-summary {
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-muted);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin: 0;
  min-height: 72px;
}

.post-card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
  font-size: 13px;
  color: #8A938D;
  border-top: 1px solid #F0ECE2;
  padding-top: 14px;
}

.post-card-meta i {
  color: var(--c-accent);
}

.cms-empty {
  background: #fff;
  border: 1px dashed #CEC6B6;
  border-radius: var(--radius-lg);
  padding: 42px 20px;
  text-align: center;
  color: var(--c-muted);
  font-size: 16px;
}

.cms-empty i {
  font-size: 30px;
  color: #D0C9BC;
  margin-bottom: 12px;
  display: block;
}

.review-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
  align-items: start;
}

.review-card {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 28px 24px 22px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  position: relative;
}

.review-card--primary {
  background: var(--c-primary);
  border-color: var(--c-primary);
  color: #fff;
  transform: translateY(-10px);
}

.review-card--primary .quote-mark,
.review-card--primary .customer-name,
.review-card--primary .customer-name small {
  color: #fff;
}

.review-card--primary .review-text {
  color: #EAF0EB;
}

.review-card--accent {
  border-left: 4px solid var(--c-accent);
  transform: translateY(8px);
}

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

.review-card--primary:hover {
  transform: translateY(-10px);
}

.review-card--accent:hover {
  transform: translateY(2px);
}

.quote-mark {
  font-size: 54px;
  font-weight: 800;
  line-height: .8;
  color: var(--c-accent);
  font-family: Georgia, serif;
  display: block;
  margin-bottom: 8px;
}

.review-stars {
  color: var(--c-accent);
  letter-spacing: 3px;
  font-size: 14px;
  margin-bottom: 14px;
}

.review-text {
  font-size: 16px;
  line-height: 1.8;
  color: #35483E;
  margin-bottom: 20px;
}

.customer-name {
  font-weight: 700;
  color: var(--c-primary);
  text-align: right;
}

.customer-name small {
  display: block;
  color: var(--c-muted);
  font-weight: 400;
  font-size: 13px;
}

.review-card--primary .customer-name small {
  color: rgba(255, 255, 255, .7);
}

.download-section {
  background: var(--c-primary);
  padding: clamp(60px, 8vw, 100px) 0;
}

.download-panel {
  background: linear-gradient(135deg, #2B5D48, var(--c-primary) 58%);
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: 20px;
  padding: clamp(28px, 5vw, 56px);
  position: relative;
  overflow: hidden;
}

.download-panel::after {
  content: "";
  position: absolute;
  right: -80px;
  top: -80px;
  width: 300px;
  height: 300px;
  background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity: .08;
  border-radius: 50%;
}

.download-panel h2 {
  color: #fff;
  font-size: clamp(27px, 3vw, 38px);
  margin: 0 0 18px;
}

.download-panel .lead {
  color: #DCEDE3;
  font-size: 16px;
  line-height: 1.8;
  max-width: 560px;
  margin-bottom: 30px;
}

.download-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.download-note {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  margin-top: 24px;
  font-size: 14px;
  color: rgba(255, 255, 255, .82);
}

.download-note span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.qr-wrap {
  margin-left: auto;
  max-width: 230px;
  background: rgba(255, 255, 255, .08);
  border: 1px solid rgba(255, 255, 255, .16);
  border-radius: 16px;
  padding: 18px;
  text-align: center;
}

.qr-placeholder {
  width: 154px;
  height: 154px;
  margin: 0 auto 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  border-radius: 12px;
  color: var(--c-primary);
  font-size: 42px;
  font-weight: 800;
}

.qr-wrap small {
  color: #DCEAE0;
  font-size: 13px;
  display: block;
}

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

.accordion {
  background: transparent;
}

.accordion-item {
  background: #fff;
  border: 1px solid var(--c-border) !important;
  border-radius: var(--radius-lg);
  margin-bottom: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.accordion-item:hover {
  border-color: var(--c-primary-light);
}

.accordion-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: #fff;
  border: 0;
  color: var(--c-text);
  font-size: 17px;
  font-weight: 700;
  padding: 20px 22px;
  line-height: 1.5;
}

.accordion-title:hover,
.accordion-title:focus {
  background: #FBF9F5;
  color: var(--c-primary);
}

.accordion-title::before {
  content: "\f067";
  font-family: "Font Awesome 5 Free";
  font-weight: 900;
  font-size: 15px;
  color: var(--c-accent);
  margin-left: auto;
  transition: var(--transition);
  order: 2;
}

.accordion-item.is-active .accordion-title::before {
  transform: rotate(45deg);
}

.accordion-content {
  background: #fff;
  font-size: 15px;
  color: #55685E;
  padding: 0 22px 22px !important;
  line-height: 1.8;
  border: 0 !important;
}

.footer {
  background: var(--c-footer);
  color: #DCE4DE;
  padding: 60px 0 0;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.3fr .9fr .9fr .8fr;
  gap: 40px;
  padding-bottom: 34px;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}

.footer-brand .logo-text {
  color: #fff;
  font-size: 22px;
}

.footer-brand .logo-mark {
  background: var(--c-accent);
  color: var(--c-primary);
}

.footer-brand p {
  color: #AEBFB4;
  font-size: 14px;
  line-height: 1.85;
  margin-top: 18px;
  max-width: 340px;
}

.footer h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
}

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

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  color: #AEBFB4;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.footer-links a:hover {
  color: var(--c-accent);
}

.footer-bottom {
  padding: 22px 0;
  font-size: 13px;
  color: #82948A;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
}

.footer-bottom a {
  color: #AEBFB4;
}

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

.back-top {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border: 1px solid rgba(255, 255, 255, .16);
  border-radius: var(--radius-md);
  color: #fff !important;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}

@media (max-width: 1024px) {
  .main-nav>li>a {
    padding: 0 11px;
    font-size: 15px;
  }

  .nav-search {
    width: 180px;
  }

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

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

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

  .review-card--primary {
    transform: none;
  }

  .review-card--accent {
    transform: none;
  }
}

@media (max-width: 900px) {
  .header-nav-wrap {
    display: none;
    border-top: 0;
  }

  .site-header.nav-open .header-nav-wrap {
    display: block;
    border-top: 1px solid var(--c-border);
  }

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

  .header-nav-inner {
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    padding: 14px 0;
  }

  .main-nav {
    flex-direction: column;
    gap: 2px;
  }

  .main-nav>li>a {
    min-height: 46px;
    font-size: 17px;
    border-bottom: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
  }

  .main-nav>li>a.active {
    border-bottom: 0;
    border-left-color: var(--c-primary);
    background: rgba(30, 77, 59, .06);
  }

  .nav-search-cols {
    justify-content: flex-start;
  }

  .nav-search {
    width: 100%;
  }

  .hero-section {
    padding-top: 42px;
  }

  .hero-device {
    margin-top: 40px;
    margin-left: 0;
    max-width: 100%;
  }

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

  .feature-slide-visual {
    min-height: 240px;
  }

  .environment-wrap {
    grid-template-columns: 1fr;
  }

  .disc-text {
    text-align: left;
  }

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

  .qr-wrap {
    margin: 30px auto 0;
  }
}

@media (max-width: 639px) {
  .top-version {
    display: none;
  }

  .header-top-row {
    min-height: 50px;
  }

  .logo-text {
    font-size: 18px;
  }

  .hero-main-title {
    font-size: 32px;
  }

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

  .hero-live-bar {
    border-radius: var(--radius-lg);
    padding: 16px;
  }

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

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

  .slider-prev {
    left: 6px;
  }

  .slider-next {
    right: 6px;
  }

  .section-more-link {
    display: none;
  }

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

  .download-note {
    flex-direction: column;
    gap: 8px;
  }

  .download-panel .download-buttons .btn {
    width: 100%;
  }
}

/* roulang page: category1 */
:root {
      --primary: #1E4D3B;
      --primary-strong: #173D2F;
      --primary-mid: #32735B;
      --accent: #C9A26E;
      --accent-dark: #B58A54;
      --bg: #F7F4EE;
      --surface: #FFFFFF;
      --text: #1C2120;
      --text-muted: #697B72;
      --line: #E4DFD3;
      --radius: 10px;
      --radius-sm: 6px;
      --shadow: 0 1px 2px rgba(30, 60, 40, .06);
      --shadow-md: 0 12px 32px rgba(30, 60, 40, .12);
      --font: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
      --gap-section: clamp(64px, 8vw, 120px);
    }

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

    html {
      scroll-behavior: smooth;
    }

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

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

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

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

    button,
    input {
      font-family: inherit;
    }

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

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

    .grid-container {
      max-width: 1200px;
    }

    .section {
      padding: var(--gap-section) 0;
    }

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

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

    .section-head {
      max-width: 860px;
      margin: 0 auto 44px;
      text-align: center;
    }

    .section-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(201, 162, 110, .14);
      color: var(--primary);
      border: 1px solid rgba(201, 162, 110, .38);
      padding: 5px 14px;
      border-radius: 999px;
      font-size: 13px;
      letter-spacing: .04em;
      margin-bottom: 14px;
    }

    .section-title {
      font-size: clamp(24px, 3.4vw, 40px);
      font-weight: 800;
      color: var(--text);
      line-height: 1.3;
      letter-spacing: .01em;
    }

    .section-desc {
      color: var(--text-muted);
      font-size: 16px;
      margin-top: 16px;
    }

    /* header */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 120;
      background: rgba(247, 244, 238, .94);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--line);
    }

    .site-header-top {
      border-bottom: 1px solid rgba(255, 255, 255, .7);
      transition: opacity .3s ease, height .3s ease;
    }

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

    .logo {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-size: 20px;
      font-weight: 800;
      letter-spacing: .01em;
      color: var(--text);
    }

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

    .logo-mark {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 34px;
      height: 34px;
      border-radius: 9px;
      background: var(--primary);
      color: #fff;
      font-size: 17px;
      font-weight: 800;
      box-shadow: 0 2px 8px rgba(30, 77, 59, .2);
    }

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

    .top-actions {
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .header-search-btn,
    .menu-toggle {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      min-height: 36px;
      padding: 0 12px;
      border: 1px solid transparent;
      border-radius: 999px;
      background: transparent;
      color: var(--text);
      font-size: 14px;
      cursor: pointer;
      transition: all .25s ease;
    }

    .header-search-btn {
      color: var(--text-muted);
    }

    .header-search-btn:hover {
      background: var(--surface);
      color: var(--primary);
      border-color: var(--line);
    }

    .menu-toggle {
      display: none;
    }

    .site-navbar {
      border-top: 1px solid rgba(228, 223, 211, .45);
    }

    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      min-height: 50px;
      gap: 20px;
    }

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

    .main-nav a {
      display: inline-block;
      padding: 10px 16px;
      border-bottom: 2px solid transparent;
      font-size: 16px;
      color: var(--text);
      font-weight: 500;
    }

    .main-nav a:hover {
      color: var(--primary);
      border-bottom-color: rgba(30, 77, 59, .35);
    }

    .main-nav a.active {
      color: var(--primary);
      border-bottom-color: var(--accent);
      font-weight: 700;
    }

    .nav-hot {
      display: flex;
      align-items: center;
      gap: 6px;
      color: var(--text-muted);
      font-size: 13px;
      white-space: nowrap;
    }

    .nav-hot a {
      font-size: 13px;
      color: var(--primary-mid);
      border: 1px solid rgba(50, 115, 91, .2);
      background: rgba(50, 115, 91, .06);
      border-radius: 999px;
      padding: 2px 10px;
      transition: all .25s ease;
    }

    .nav-hot a:hover {
      background: rgba(50, 115, 91, .12);
      color: var(--primary);
    }

    /* buttons */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      min-height: 46px;
      padding: 0 24px;
      border-radius: 6px;
      font-size: 15px;
      font-weight: 600;
      border: 1px solid transparent;
      cursor: pointer;
      transition: all .25s ease;
      line-height: 1.2;
    }

    .btn i {
      font-size: 16px;
      transition: transform .25s ease;
    }

    .btn:hover i {
      transform: translateX(2px);
    }

    .btn-gold {
      background: var(--accent);
      color: #1c2120;
      border-color: var(--accent);
    }

    .btn-gold:hover {
      background: var(--accent-dark);
      border-color: var(--accent-dark);
      color: #fff;
    }

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

    .btn-solid:hover {
      background: var(--primary-strong);
      border-color: var(--primary-strong);
      color: #fff;
      box-shadow: 0 8px 18px rgba(30, 77, 59, .2);
    }

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

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

    .btn-white-outline {
      background: transparent;
      color: #fff;
      border-color: rgba(255, 255, 255, .6);
    }

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

    /* category banner */
    .category-hero {
      position: relative;
      padding: clamp(60px, 7vw, 108px) 0 clamp(52px, 6vw, 96px);
      color: #fff;
      background-image: linear-gradient(120deg, rgba(23, 61, 47, .94), rgba(30, 77, 59, .8), rgba(50, 115, 91, .66)), url(/assets/images/backpic/back-1.webp);
      background-size: cover;
      background-position: center center;
    }

    .category-hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background: radial-gradient(ellipse at 75% 10%, rgba(201, 162, 110, .26), transparent 46%);
      pointer-events: none;
    }

    .category-hero .grid-container {
      position: relative;
      z-index: 1;
    }

    .breadcrumbs {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      font-size: 13px;
      color: rgba(255, 255, 255, .75);
      margin-bottom: 28px;
    }

    .breadcrumbs a {
      color: rgba(255, 255, 255, .9);
    }

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

    .hero-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 18px;
      padding: 5px 14px;
      border: 1px solid rgba(255, 255, 255, .34);
      border-radius: 999px;
      background: rgba(255, 255, 255, .1);
      font-size: 13px;
      letter-spacing: .04em;
      color: #f8e6cd;
    }

    .category-hero h1 {
      font-size: clamp(34px, 5vw, 60px);
      font-weight: 800;
      line-height: 1.22;
      color: #fff;
      max-width: 720px;
      letter-spacing: .01em;
      text-wrap: balance;
    }

    .category-hero .hero-desc {
      margin: 20px 0 32px;
      max-width: 680px;
      font-size: 17px;
      color: rgba(255, 255, 255, .86);
      line-height: 1.85;
    }

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

    .hero-note {
      margin-top: 18px;
      font-size: 13px;
      color: rgba(255, 255, 255, .6);
    }

    /* overview intro */
    .overview-note {
      background: var(--surface);
      border: 1px solid var(--line);
      border-radius: 14px;
      padding: 36px;
      box-shadow: var(--shadow);
      position: relative;
      overflow: hidden;
    }

    .overview-note::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 4px;
      height: 100%;
      background: var(--accent);
    }

    .overview-note h2 {
      font-size: 24px;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 14px;
    }

    .overview-note p {
      color: var(--text-muted);
      font-size: 16px;
      margin-bottom: 10px;
    }

    .info-line {
      display: flex;
      flex-wrap: wrap;
      gap: 22px;
      margin-top: 18px;
      padding-top: 18px;
      border-top: 1px solid var(--line);
    }

    .info-line span {
      font-size: 14px;
      color: var(--text);
    }

    .info-line i {
      color: var(--accent-dark);
      margin-right: 8px;
    }

    /* row features */
    .feature-wrap {
      display: grid;
      gap: clamp(48px, 7vw, 88px);
    }

    .feature-row {
      display: grid;
      grid-template-columns: 1.08fr .92fr;
      align-items: center;
      gap: clamp(28px, 5vw, 68px);
    }

    .feature-row.is-reverse {
      grid-template-columns: .92fr 1.08fr;
    }

    .feature-row.is-reverse .feature-media {
      order: 2;
    }

    .feature-content .feature-label {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      color: var(--primary-mid);
      font-size: 13px;
      font-weight: 600;
      letter-spacing: .03em;
      border: 1px solid rgba(50, 115, 91, .2);
      padding: 3px 12px;
      border-radius: 999px;
      background: rgba(50, 115, 91, .08);
      margin-bottom: 14px;
    }

    .feature-content h3 {
      font-size: clamp(22px, 2.6vw, 32px);
      font-weight: 800;
      line-height: 1.35;
      color: var(--text);
      margin-bottom: 14px;
    }

    .feature-content p {
      color: var(--text-muted);
      margin-bottom: 18px;
      font-size: 16px;
    }

    .check-list {
      display: grid;
      gap: 10px;
      margin: 18px 0 22px;
    }

    .check-list li {
      display: flex;
      gap: 10px;
      align-items: flex-start;
      color: var(--text);
      font-size: 15px;
    }

    .check-list li i {
      color: var(--primary-mid);
      margin-top: 6px;
    }

    .feature-cta {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .feature-media {
      position: relative;
      margin: 0;
    }

    .feature-media img {
      width: 100%;
      aspect-ratio: 4 / 3;
      object-fit: cover;
      border-radius: 16px;
      border: 1px solid rgba(228, 223, 211, .8);
      box-shadow: 0 18px 44px rgba(30, 60, 40, .14);
      transition: transform .4s ease, box-shadow .4s ease;
    }

    .feature-media:hover img {
      transform: scale(1.02);
    }

    .media-caption {
      position: absolute;
      left: 16px;
      bottom: 16px;
      right: 16px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 8px;
      background: rgba(28, 33, 32, .68);
      color: #fff;
      font-size: 13px;
      line-height: 1.45;
      padding: 12px 16px;
      border-radius: 10px;
      backdrop-filter: blur(6px);
      border: 1px solid rgba(255, 255, 255, .18);
    }

    .media-caption i {
      color: var(--accent);
    }

    /* system environment */
    .system-zone {
      background-color: var(--primary);
      background-image:
        linear-gradient(90deg, rgba(23, 61, 47, .88), rgba(30, 77, 59, .78)),
        url(/assets/images/backpic/back-2.png);
      background-size: cover;
      background-position: center;
      color: #fff;
    }

    .system-zone .section-title,
    .system-zone .section-desc {
      color: #fff;
    }

    .system-zone .section-tag {
      background: rgba(255, 255, 255, .1);
      border-color: rgba(255, 255, 255, .3);
      color: #f8e6cd;
    }

    .system-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
    }

    .system-card {
      background: rgba(255, 255, 255, .06);
      border: 1px solid rgba(255, 255, 255, .18);
      border-radius: 14px;
      padding: 22px 20px;
      backdrop-filter: blur(5px);
      transition: all .3s ease;
    }

    .system-card:hover {
      background: rgba(255, 255, 255, .12);
      transform: translateY(-3px);
    }

    .system-card i {
      font-size: 24px;
      color: var(--accent);
      margin-bottom: 12px;
    }

    .system-card h3 {
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .system-card p {
      font-size: 13px;
      color: rgba(255, 255, 255, .68);
      line-height: 1.7;
    }

    .sys-note {
      margin-top: 28px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 12px 22px;
      font-size: 14px;
      color: rgba(255, 255, 255, .72);
    }

    .sys-note span {
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .sys-note i {
      color: var(--accent);
    }

    /* download area */
    .download-card {
      background: var(--surface);
      border: 1px solid var(--line);
      border-radius: 18px;
      overflow: hidden;
      box-shadow: var(--shadow);
      display: grid;
      grid-template-columns: 1.05fr .95fr;
    }

    .download-main {
      padding: clamp(28px, 4vw, 56px);
    }

    .download-main .section-tag {
      margin-bottom: 12px;
    }

    .download-main h2 {
      font-size: clamp(24px, 3vw, 38px);
      font-weight: 800;
      color: var(--primary);
      line-height: 1.3;
      margin-bottom: 14px;
    }

    .download-main p {
      color: var(--text-muted);
      margin-bottom: 24px;
    }

    .download-btns {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .download-tips {
      margin-top: 20px;
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .download-tips span {
      font-size: 13px;
      color: var(--text-muted);
      border: 1px solid var(--line);
      background: var(--bg);
      border-radius: 999px;
      padding: 3px 12px;
    }

    .download-panel-media {
      background: linear-gradient(145deg, #f1e8d8, #e6eddc);
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 28px;
      position: relative;
    }

    .download-visual {
      width: 100%;
      max-width: 340px;
      aspect-ratio: 1 / 1;
      background: var(--primary);
      border-radius: 22px;
      padding: 24px;
      display: flex;
      flex-direction: column;
      justify-content: center;
      color: #fff;
      box-shadow: 0 20px 40px rgba(30, 60, 40, .2);
      position: relative;
      overflow: hidden;
    }

    .download-visual::after {
      content: "";
      position: absolute;
      width: 180px;
      height: 180px;
      right: -60px;
      top: -60px;
      background: rgba(201, 162, 110, .35);
      border-radius: 50%;
    }

    .download-visual i {
      font-size: 32px;
      color: var(--accent);
      margin-bottom: 18px;
      position: relative;
      z-index: 1;
    }

    .download-visual strong {
      font-size: 22px;
      line-height: 1.5;
      position: relative;
      z-index: 1;
    }

    .download-visual span {
      font-size: 14px;
      color: rgba(255, 255, 255, .7);
      margin-top: 8px;
      position: relative;
      z-index: 1;
    }

    /* FAQ */
    .faq-wrap {
      max-width: 880px;
      margin: 0 auto;
    }

    .faq-item {
      background: var(--surface);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      margin-bottom: 14px;
      overflow: hidden;
      transition: all .25s ease;
    }

    .faq-item.open {
      border-color: rgba(30, 77, 59, .38);
      box-shadow: 0 10px 26px rgba(30, 60, 40, .08);
    }

    .faq-question {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      background: transparent;
      border: 0;
      padding: 20px 22px;
      font-size: 16px;
      font-weight: 700;
      text-align: left;
      color: var(--text);
      cursor: pointer;
      min-height: 62px;
    }

    .faq-question .faq-icon {
      flex: 0 0 auto;
      width: 28px;
      height: 28px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 50%;
      background: rgba(30, 77, 59, .08);
      color: var(--primary);
      font-size: 16px;
      transition: all .25s ease;
    }

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

    .faq-answer {
      display: none;
      padding: 0 22px 22px;
      color: var(--text-muted);
      line-height: 1.8;
      font-size: 15px;
    }

    .faq-item.open .faq-answer {
      display: block;
      animation: answerIn .25s ease both;
    }

    @keyframes answerIn {
      from {
        opacity: 0;
        transform: translateY(-6px);
      }

      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    /* footer */
    .footer {
      background: #1C2B24;
      color: rgba(255, 255, 255, .72);
      padding: 56px 0 32px;
      margin-top: clamp(48px, 6vw, 80px);
    }

    .footer .logo {
      color: #fff;
      margin-bottom: 16px;
    }

    .footer-top {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr .5fr;
      gap: 36px;
      padding-bottom: 34px;
      border-bottom: 1px solid rgba(255, 255, 255, .16);
    }

    .footer-brand p {
      max-width: 340px;
      font-size: 14px;
      line-height: 1.8;
      color: rgba(255, 255, 255, .6);
    }

    .footer h4 {
      color: #fff;
      font-size: 16px;
      margin-bottom: 14px;
      font-weight: 600;
    }

    .footer-links li {
      margin-bottom: 9px;
    }

    .footer-links a {
      color: rgba(255, 255, 255, .64);
      font-size: 14px;
    }

    .footer-links a:hover {
      color: var(--accent);
    }

    .back-top {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 42px;
      height: 42px;
      border: 1px solid rgba(255, 255, 255, .3);
      border-radius: 10px;
      color: #fff;
      transition: all .25s ease;
    }

    .back-top:hover {
      background: var(--accent);
      color: #1c2120;
    }

    .footer-bottom {
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      gap: 12px;
      padding-top: 22px;
      font-size: 13px;
      color: rgba(255, 255, 255, .42);
    }

    /* focus */
    a:focus-visible,
    button:focus-visible {
      outline: 2px solid var(--accent);
      outline-offset: 2px;
      border-radius: 4px;
    }

    @media (prefers-reduced-motion: reduce) {
      *,
      *::before,
      *::after {
        animation-duration: .01ms !important;
        transition-duration: .01ms !important;
        scroll-behavior: auto !important;
      }
    }

    /* responsive */
    @media (max-width: 1023.98px) {
      .nav-hot {
        display: none;
      }

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

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

      .feature-row,
      .feature-row.is-reverse {
        grid-template-columns: 1fr;
      }

      .feature-row.is-reverse .feature-media {
        order: 0;
      }

      .download-card {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 639.98px) {
      .top-inner {
        min-height: 52px;
      }

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

      .site-navbar {
        display: none;
        border-top: 0;
        padding-bottom: 14px;
      }

      .site-navbar.open {
        display: block;
      }

      .nav-inner {
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
      }

      .main-nav ul {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        border-radius: 10px;
        overflow: hidden;
        background: var(--surface);
        border: 1px solid var(--line);
      }

      .main-nav a {
        display: block;
        border-bottom: 1px solid var(--line);
        padding: 13px 18px;
        font-size: 15px;
      }

      .main-nav a:last-child {
        border-bottom: 0;
      }

      .main-nav a.active {
        background: rgba(30, 77, 59, .08);
        border-bottom-color: var(--line);
      }

      .category-hero h1 {
        font-size: 31px;
      }

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

      .system-grid {
        grid-template-columns: 1fr;
        gap: 10px;
      }

      .system-card {
        padding: 18px;
      }

      .section-head {
        margin-bottom: 30px;
      }

      .overview-note {
        padding: 26px 20px;
      }

      .check-list li {
        font-size: 14px;
      }

      .download-tips span {
        font-size: 12px;
      }

      .download-btns .btn {
        width: 100%;
      }

      .faq-question {
        font-size: 15px;
        padding: 16px 16px;
      }

      .faq-answer {
        padding: 0 16px 18px;
      }

      .footer-top {
        grid-template-columns: 1fr;
        gap: 24px;
      }

      .footer-bottom {
        flex-direction: column;
      }
    }

/* roulang page: article */
:root {
            --primary: #1E4D3B;
            --primary-mid: #32735B;
            --primary-dark: #173D2F;
            --accent: #C9A26E;
            --bg: #F7F4EE;
            --bg-deep: #EFE9DC;
            --white: #FFFFFF;
            --text: #1C2120;
            --muted: #697B72;
            --border: #E4DFD3;
            --radius: 10px;
            --radius-btn: 6px;
            --shadow-sm: 0 1px 2px rgba(30, 60, 40, .06);
            --shadow-md: 0 12px 32px rgba(30, 60, 40, .12);
            --font: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background: var(--bg);
            font-family: var(--font);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .25s ease;
        }

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

        button,
        input {
            font-family: inherit;
            font-size: 1rem;
            border: none;
            background: none;
        }

        button {
            cursor: pointer;
        }

        input:focus,
        button:focus,
        a:focus-visible {
            outline: 2px solid rgba(201, 162, 110, .72);
            outline-offset: 2px;
        }

        ul,
        ol,
        figure,
        blockquote {
            margin: 0;
            padding: 0;
        }

        .grid-container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
            width: 100%;
        }

        .skip-link {
            position: absolute;
            left: -999px;
            top: 8px;
            z-index: 200;
            padding: 10px 16px;
            background: var(--primary);
            color: #fff;
            border-radius: 6px;
            font-weight: 600;
        }

        .skip-link:focus {
            left: 12px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 90;
            background: #fff;
        }

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

        .header-meta-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 52px;
            padding-top: 6px;
            padding-bottom: 6px;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: var(--text);
            flex-shrink: 0;
        }

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

        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            min-width: 32px;
            background: var(--primary);
            color: var(--accent);
            font-weight: 800;
            border-radius: 9px;
            font-size: 18px;
            box-shadow: var(--shadow-sm);
        }

        .logo-text {
            font-size: 18px;
            font-weight: 800;
            letter-spacing: .02em;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 6px;
            margin-left: auto;
        }

        .icon-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            min-width: 40px;
            border-radius: 8px;
            color: var(--text);
            background: var(--bg);
            transition: background .25s ease, color .25s ease, transform .2s ease;
        }

        .icon-btn:hover {
            background: #E9E2D6;
            color: var(--primary);
        }

        .icon-btn:active {
            transform: translateY(1px);
        }

        .header-navbar {
            background: rgba(255, 255, 255, .97);
            border-bottom: 1px solid var(--border);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            min-height: 52px;
            gap: 8px;
        }

        .main-nav {
            margin-right: auto;
        }

        .nav-links {
            display: flex;
            align-items: center;
            list-style: none;
            gap: 2px;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            display: block;
            position: relative;
            padding: 10px 15px;
            color: var(--text);
            font-size: 15px;
            font-weight: 600;
            border-radius: 6px;
            transition: color .25s ease, background .25s ease;
        }

        .nav-links a:hover {
            color: var(--primary);
            background: rgba(30, 77, 59, .05);
        }

        .nav-links a.active {
            color: var(--primary);
        }

        .nav-links a.active::after {
            content: "";
            position: absolute;
            left: 15px;
            right: 15px;
            bottom: 2px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        .nav-search {
            display: flex;
            align-items: center;
            width: 220px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 0 8px 0 14px;
            transition: border-color .25s ease, box-shadow .25s ease;
        }

        .nav-search:focus-within {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(201, 162, 110, .18);
        }

        .nav-search i {
            color: var(--muted);
            font-size: 14px;
            margin-right: 9px;
        }

        .nav-search input {
            height: 38px;
            background: transparent;
            color: var(--text);
            font-size: 14px;
            width: 100%;
        }

        .nav-search input::placeholder {
            color: #94A39A;
        }

        .article-head {
            position: relative;
            background:
                radial-gradient(circle at 80% 20%, rgba(201, 162, 110, .16), transparent 36%),
                linear-gradient(120deg, rgba(19, 49, 38, .93), rgba(37, 91, 70, .88)),
                url('/assets/images/backpic/back-3.webp') center / cover no-repeat;
            color: #fff;
            padding: 64px 0 76px;
            border-bottom: 4px solid var(--accent);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            color: rgba(255, 255, 255, .75);
            font-size: 13px;
            margin-bottom: 20px;
            letter-spacing: .02em;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, .86);
            transition: color .25s ease;
        }

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

        .breadcrumb .current {
            color: rgba(255, 255, 255, .6);
            max-width: 260px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .cat-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .14);
            border: 1px solid rgba(255, 255, 255, .26);
            border-radius: 999px;
            padding: 5px 14px;
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 18px;
            backdrop-filter: blur(6px);
        }

        .cat-tag::before {
            content: "";
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
        }

        .article-head h1 {
            color: #fff;
            font-size: clamp(30px, 5vw, 56px);
            line-height: 1.22;
            margin: 0 0 20px;
            max-width: 900px;
            font-weight: 800;
            letter-spacing: .01em;
        }

        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px 22px;
            color: rgba(255, 255, 255, .82);
            font-size: 14px;
        }

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

        .meta-item i {
            color: var(--accent);
            font-size: 14px;
        }

        .article-main {
            background: var(--bg);
            padding: 46px 0 72px;
        }

        .content-narrow {
            max-width: 820px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .article-body {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 16px;
            box-shadow: var(--shadow-sm);
            padding: clamp(26px, 6vw, 56px);
            font-size: 16.5px;
            line-height: 1.95;
            color: #202723;
            overflow-wrap: break-word;
        }

        .article-body>* {
            margin-bottom: 1.5em;
        }

        .article-body>*:first-child {
            margin-top: 0;
        }

        .article-body>*:last-child {
            margin-bottom: 0;
        }

        .article-body p {
            margin-bottom: 1.5em;
        }

        .article-body h2 {
            font-size: 26px;
            line-height: 1.35;
            color: var(--primary);
            margin-top: 1.8em;
            margin-bottom: .7em;
            letter-spacing: .02em;
        }

        .article-body h3 {
            font-size: 21px;
            line-height: 1.45;
            color: var(--text);
            margin-top: 1.6em;
            margin-bottom: .6em;
        }

        .article-body ul,
        .article-body ol {
            padding-left: 1.45em;
            margin-bottom: 1.5em;
        }

        .article-body li {
            margin-bottom: .5em;
        }

        .article-body blockquote {
            margin: 1.8em 0;
            padding: 14px 20px;
            border-left: 4px solid var(--accent);
            background: #FBF8F2;
            color: var(--muted);
            border-radius: 0 8px 8px 0;
        }

        .article-body img {
            display: block;
            border-radius: 12px;
            height: auto;
            margin: 28px auto;
            border: 1px solid var(--border);
        }

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

        .article-body code,
        .article-body pre {
            font-size: 14px;
            border-radius: 6px;
        }

        .read-more {
            background: #fff;
            padding: clamp(64px, 8vw, 96px) 0;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .section-head {
            margin-bottom: 36px;
            max-width: 780px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary-mid);
            font-size: 14px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .section-tag::before {
            content: "";
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
        }

        .section-head h2 {
            font-size: clamp(24px, 3.4vw, 38px);
            color: var(--text);
            line-height: 1.3;
            margin: 0;
            letter-spacing: .01em;
        }

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

        .quick-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 14px;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-sm);
            transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
        }

        .quick-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: #D2C8B6;
        }

        .card-media {
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--bg-deep);
        }

        .card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .45s ease;
        }

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

        .quick-body {
            display: flex;
            flex-direction: column;
            flex: 1;
            padding: 22px 22px 18px;
        }

        .quick-tag {
            display: inline-block;
            align-self: flex-start;
            border-radius: 999px;
            background: #EEF3EF;
            color: var(--primary-mid);
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: .02em;
        }

        .quick-card h3 {
            font-size: 19px;
            line-height: 1.45;
            margin: 0 0 12px;
            color: var(--text);
            letter-spacing: .015em;
        }

        .quick-card p {
            color: var(--muted);
            font-size: 14.5px;
            line-height: 1.75;
            margin: 0 0 18px;
            flex: 1;
        }

        .link-more {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-size: 14px;
            font-weight: 700;
            transition: gap .25s ease;
        }

        .link-more:hover {
            color: var(--primary-dark);
            gap: 12px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 9px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 700;
            letter-spacing: .02em;
            line-height: 1;
            padding: 14px 22px;
            transition: background .25s ease, color .25s ease, transform .2s ease, border-color .25s ease, box-shadow .25s ease;
            border: 1px solid transparent;
        }

        .btn:active {
            transform: translateY(1px);
        }

        .btn .btn-icon {
            transition: transform .25s ease;
        }

        .btn:hover .btn-icon {
            transform: translateX(3px);
        }

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

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

        .btn-outline-white {
            background: transparent;
            border-color: rgba(255, 255, 255, .7);
            color: #fff;
        }

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

        .download-cta {
            position: relative;
            overflow: hidden;
            background:
                radial-gradient(circle at 18% 20%, rgba(201, 162, 110, .2), transparent 32%),
                linear-gradient(135deg, #173D2F, #2B5D48);
            color: #fff;
            padding: clamp(68px, 8vw, 100px) 0;
        }

        .download-cta::after {
            content: "";
            position: absolute;
            width: 300px;
            height: 300px;
            right: -110px;
            top: -110px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, .08);
        }

        .download-cta::before {
            content: "";
            position: absolute;
            width: 420px;
            height: 420px;
            right: -190px;
            top: -190px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, .06);
        }

        .download-wrap {
            position: relative;
            z-index: 1;
        }

        .cta-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--accent);
            font-size: 14px;
            font-weight: 700;
            margin-bottom: 14px;
        }

        .cta-tag::before {
            content: "";
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
        }

        .download-cta h2 {
            font-size: clamp(26px, 4vw, 42px);
            line-height: 1.25;
            margin: 0 0 18px;
            color: #fff;
            letter-spacing: .01em;
            max-width: 720px;
        }

        .download-cta p {
            color: rgba(255, 255, 255, .78);
            max-width: 640px;
            margin: 0 0 30px;
            font-size: 16px;
            line-height: 1.85;
        }

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

        .btn-download:hover {
            background: #F0EADF;
            color: var(--primary-dark);
        }

        .btn-download i {
            color: var(--primary);
        }

        .btn-outline-white i {
            color: var(--accent);
        }

        .btn-row {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .version-note {
            margin-top: 18px;
            font-size: 13px;
            color: rgba(255, 255, 255, .52);
            letter-spacing: .02em;
        }

        .faq-section {
            background: var(--bg);
            padding: clamp(60px, 8vw, 96px) 0;
        }

        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-section .section-head {
            text-align: center;
            margin-left: auto;
            margin-right: auto;
        }

        .faq-section .section-tag span {
            color: var(--primary-mid);
        }

        .faq-accordion {
            background: transparent;
            margin-top: 8px;
        }

        .faq-accordion .accordion-item {
            list-style: none;
            margin: 0 0 14px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 12px;
            overflow: hidden;
            transition: border-color .3s ease, box-shadow .3s ease;
        }

        .faq-accordion .accordion-item:hover {
            border-color: #D1C6B3;
            box-shadow: var(--shadow-sm);
        }

        .faq-accordion .accordion-title {
            display: block;
            position: relative;
            background: #fff;
            color: var(--text);
            font-size: 16.5px;
            font-weight: 700;
            line-height: 1.5;
            padding: 19px 58px 19px 22px;
            border: none;
            border-radius: 0;
            letter-spacing: .015em;
            transition: color .25s ease;
        }

        .faq-accordion .accordion-title:hover {
            color: var(--primary);
            background: #fff;
        }

        .faq-accordion .accordion-title::before,
        .faq-accordion .accordion-title::after {
            content: none !important;
        }

        .faq-accordion .aq-icon {
            position: absolute;
            right: 16px;
            top: 50%;
            transform: translateY(-50%);
            width: 28px;
            height: 28px;
            border-radius: 8px;
            background: #EEF3EF;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 19px;
            font-weight: 400;
            line-height: 1;
            transition: transform .3s ease, background .3s ease, color .3s ease;
        }

        .faq-accordion .accordion-item.is-active .aq-icon {
            background: var(--primary);
            color: #fff;
            transform: translateY(-50%) rotate(45deg);
        }

        .faq-accordion .accordion-content {
            background: #fff;
            color: var(--muted);
            padding: 0 22px 22px;
            line-height: 1.85;
            font-size: 15px;
            border-top: 1px solid #F0EBE2;
            border-radius: 0;
            transition: padding .25s ease;
        }

        .faq-accordion .accordion-content p {
            margin: 16px 0 0;
        }

        .not-found {
            min-height: 68vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--bg);
        }

        .not-found .content-narrow {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: clamp(40px, 7vw, 72px) clamp(20px, 5vw, 60px);
            text-align: center;
            max-width: 620px;
            box-shadow: var(--shadow-sm);
        }

        .not-found h1 {
            font-size: clamp(28px, 5vw, 46px);
            line-height: 1.3;
            color: var(--primary);
            margin: 0 0 16px;
        }

        .not-found p {
            color: var(--muted);
            font-size: 16px;
            margin: 0 0 28px;
            line-height: 1.85;
        }

        .footer {
            background: #1C2B24;
            color: rgba(255, 255, 255, .72);
            padding-top: 68px;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 38px;
            padding-bottom: 44px;
        }

        .footer-brand .logo-text {
            color: #fff;
        }

        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, .58);
            line-height: 1.85;
            margin: 20px 0 0;
            max-width: 310px;
        }

        .footer h4 {
            color: #fff;
            font-size: 15px;
            letter-spacing: .04em;
            margin: 2px 0 16px;
            font-weight: 700;
        }

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

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

        .footer-links a {
            color: rgba(255, 255, 255, .62);
            font-size: 14px;
            line-height: 1.7;
            transition: color .25s ease, padding-left .25s ease;
        }

        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .back-top {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: rgba(255, 255, 255, .08);
            color: rgba(255, 255, 255, .7);
            transition: background .25s ease, color .25s ease, transform .25s ease;
        }

        .back-top:hover {
            background: var(--accent);
            color: var(--primary-dark);
            transform: translateY(-3px);
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 6px;
            border-top: 1px solid rgba(255, 255, 255, .12);
            padding: 18px 0 22px;
            color: rgba(255, 255, 255, .4);
            font-size: 13px;
            line-height: 1.6;
        }

        @media (max-width: 1024px) {
            .nav-search {
                width: 190px;
            }

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

            .quick-card:last-child {
                grid-column: span 1;
            }

            .footer-top {
                grid-template-columns: 1.6fr 1fr 1fr;
            }
        }

        @media (max-width: 860px) {
            .menu-toggle {
                display: inline-flex;
            }

            .header-navbar {
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                display: none;
                max-height: calc(100vh - 64px);
                overflow-y: auto;
                background: #fff;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 16px 30px rgba(23, 61, 47, .12);
                padding: 8px 0 16px;
            }

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

            .header-navbar .grid-container {
                padding-left: 20px;
                padding-right: 20px;
            }

            .nav-inner {
                display: block;
                min-height: 0;
            }

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

            .nav-links a {
                padding: 13px 4px;
                font-size: 15px;
                border-bottom: 1px solid #F0EBE2;
                border-radius: 0;
            }

            .nav-links a.active {
                background: #F3F0E9;
                border-radius: 8px;
                padding-left: 12px;
            }

            .nav-links a.active::after {
                display: none;
            }

            .nav-search {
                width: 100%;
                margin-top: 12px;
            }

            .article-head {
                padding: 44px 0 56px;
            }

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

        @media (max-width: 700px) {
            .grid-container {
                padding-left: 18px;
                padding-right: 18px;
            }

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

            .article-body {
                padding: 24px 20px;
            }

            .article-body h2 {
                font-size: 22px;
            }

            .article-body h3 {
                font-size: 19px;
            }

            .read-more {
                padding: 54px 0;
            }

            .download-cta {
                padding: 56px 0;
            }

            .btn-row {
                flex-direction: column;
                align-items: stretch;
            }

            .btn-row .btn {
                width: 100%;
            }

            .footer-top {
                grid-template-columns: 1fr;
                gap: 22px;
                padding-bottom: 26px;
            }
        }

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

            .logo-mark {
                width: 30px;
                height: 30px;
                font-size: 16px;
            }

            .header-actions {
                gap: 4px;
            }

            .breadcrumb .current {
                max-width: 120px;
            }

            .cat-tag {
                margin-bottom: 12px;
            }

            .article-head h1 {
                font-size: 27px;
                line-height: 1.3;
            }

            .article-main {
                padding: 28px 0 46px;
            }

            .content-narrow {
                padding: 0 14px;
            }

            .article-meta {
                gap: 8px 14px;
                font-size: 13px;
                flex-direction: column;
                align-items: flex-start;
            }

            .quick-card h3 {
                font-size: 18px;
            }

            .download-cta h2 {
                font-size: 25px;
            }

            .download-cta p {
                font-size: 14.5px;
            }

            .version-note {
                font-size: 12px;
            }

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

            .faq-accordion .accordion-title {
                font-size: 15px;
                padding: 16px 52px 16px 16px;
            }

            .faq-accordion .accordion-content {
                padding: 0 16px 18px;
                font-size: 14px;
            }

            .footer {
                padding-top: 46px;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: .01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: .01ms !important;
                scroll-behavior: auto !important;
            }
        }

/* roulang page: category2 */
:root{
  --brand:#1E4D3B;
  --brand-mid:#32735B;
  --brand-dark:#173D2F;
  --accent:#C9A26E;
  --accent-light:#E3CEAC;
  --bg:#F7F4EE;
  --surface:#FFFFFF;
  --text:#1C2120;
  --muted:#697B72;
  --line:#E4DFD3;
  --radius-card:10px;
  --radius-btn:6px;
  --shadow-card:0 1px 2px rgba(30,60,40,.06);
  --shadow-hover:0 12px 32px rgba(30,60,40,.12);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0;font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;background:var(--bg);color:var(--text);line-height:1.75;font-size:16px;-webkit-font-smoothing:antialiased;}
a{color:inherit;text-decoration:none;transition:color .25s ease,background .25s ease,border-color .25s ease;}
a:hover,a:focus{color:var(--brand-mid);}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
img{max-width:100%;display:block;}
ul,ol{padding:0;margin:0;list-style:none;}
h1,h2,h3,h4,h5,p,figure{margin:0;}
button,input{font-family:inherit;}
.grid-container{padding-left:20px;padding-right:20px;}
.container{max-width:1200px;margin:0 auto;padding:0 20px;width:100%;}
.bg-soft{background:var(--bg);}
.section-default{padding:clamp(48px,6vw,90px) 0;}
.section-tight{padding:clamp(40px,4vw,64px) 0;}
.text-center{text-align:center;}

/* Header / Nav */
.site-header{position:relative;z-index:50;position:sticky;top:0;left:0;right:0;background:rgba(247,244,238,.92);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line);}
.header-brand-row{padding:10px 0;border-bottom:1px solid rgba(228,223,211,.7);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;}
.header-nav-row{min-height:52px;display:flex;align-items:center;justify-content:space-between;gap:16px;}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:22px;font-weight:800;letter-spacing:.04em;}
.logo-mark{display:inline-flex;width:36px;height:36px;border-radius:10px;background:var(--brand);color:#fff;font-size:20px;font-weight:800;align-items:center;justify-content:center;box-shadow:0 6px 14px rgba(30,77,59,.18);}
.logo-text{color:var(--text);font-weight:800;}
.main-nav{display:flex;align-items:center;gap:6px;}
.main-nav > li{position:relative;}
.main-nav > li > a{display:inline-flex;align-items:center;min-height:48px;padding:0 14px;font-size:15px;font-weight:600;color:var(--text);border-radius:6px;}
.main-nav > li > a:hover{color:var(--brand-mid);background:rgba(30,77,59,.06);}
.main-nav > li > a.active{color:var(--brand);position:relative;}
.main-nav > li > a.active::after{content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;background:var(--brand);border-radius:99px;}
.header-tools{display:flex;align-items:center;gap:8px;}
.search-input{width:160px;height:38px;padding:0 14px;border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--text);font-size:13.5px;transition:width .25s ease,border-color .25s ease,box-shadow .25s ease;}
.search-input:focus{outline:none;width:210px;border-color:var(--accent);box-shadow:0 0 0 3px rgba(201,162,110,.14);}
.search-submit{width:38px;height:38px;border:0;background:transparent;color:var(--brand);border-radius:50%;font-size:16px;cursor:pointer;}
.menu-toggle{display:none;width:44px;height:44px;background:var(--brand);border:0;border-radius:8px;color:#fff;font-size:18px;cursor:pointer;align-items:center;justify-content:center;}
.menu-toggle:hover{background:var(--brand-dark);}
.mobile-search{display:none;padding:12px 0;}
.mobile-search input{width:100%;height:46px;border-radius:10px;border:1px solid var(--line);padding:0 16px;}
.hero-cta-pill{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;background:var(--surface);border:1px solid var(--line);border-radius:999px;font-size:13px;font-weight:600;color:var(--brand-mid);box-shadow:var(--shadow-card);}

/* Breadcrumb */
.breadcrumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--muted);padding:18px 0 0;}
.breadcrumbs a{color:var(--brand);font-weight:500;}
.breadcrumbs span.sep{opacity:.55;}

/* Category Page Hero */
.cat-hero{position:relative;background:linear-gradient(120deg,rgba(23,61,47,.92),rgba(50,115,91,.88)),url(/assets/images/backpic/back-3.webp) center/cover;padding:64px 0 56px;color:#fff;}
.cat-hero:after{content:"";position:absolute;inset:auto 0 0 0;height:120px;background:linear-gradient(to bottom,rgba(23,61,47,0),rgba(23,61,47,.2));pointer-events:none;}
.cat-hero-inner{max-width:900px;position:relative;z-index:2;}
.cat-hero .eyebrow{display:flex;align-items:center;gap:8px;font-size:14px;letter-spacing:.08em;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.22);padding:8px 16px;border-radius:999px;width:max-content;font-weight:600;}
.cat-hero h1{font-size:clamp(32px,4.8vw,58px);line-height:1.22;letter-spacing:.02em;font-weight:800;margin:22px 0 18px;}
.cat-hero .lead{font-size:clamp(16px,1.8vw,20px);opacity:.92;max-width:760px;line-height:1.85;}
.cat-hero .meta-line{display:flex;flex-wrap:wrap;gap:16px;margin-top:24px;font-size:14px;opacity:.8;}
.cat-hero .meta-line i{margin-right:6px;color:var(--accent-light);}

/* Sidebar layout */
.category-wrap{padding:40px 0 72px;}
.category-grid{display:grid;grid-template-columns:280px minmax(0,1fr);gap:32px;align-items:start;}
.sidebar-card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:24px;box-shadow:var(--shadow-card);}
.sticky-side{position:sticky;top:84px;display:grid;gap:20px;}
.side-title{font-size:16px;font-weight:800;color:var(--text);padding-bottom:12px;border-bottom:1px solid var(--line);margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-title i{color:var(--accent);}
.side-links li{border-bottom:1px solid #f0ebe1;font-size:14px;}
.side-links li:last-child{border-bottom:0;}
.side-links a{display:flex;align-items:center;justify-content:space-between;padding:10px 2px;color:#3a2e24;font-weight:500;}
.side-links a i{font-size:12px;color:var(--accent);}
.side-links a:hover{color:var(--brand);padding-left:6px;}
.side-cta{margin-top:16px;background:#FBF6EC;border:1px dashed #dbc7a5;border-radius:12px;padding:18px;text-align:left;}
.side-cta h4{font-size:15px;margin-bottom:8px;color:var(--brand);}
.side-cta p{font-size:13px;color:var(--muted);line-height:1.7;margin-bottom:14px;}
.side-cta .btn-mini{display:inline-flex;align-items:center;gap:8px;background:var(--brand);color:#fff;border-radius:999px;padding:9px 16px;font-size:13px;font-weight:600;}
.side-cta .btn-mini:hover{background:var(--brand-dark);color:#fff;}

/* Content vertical rows */
.tutorial-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:26px;}
.tutorial-head h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;font-weight:800;}
.tutorial-head p{color:var(--muted);font-size:14px;}
.icon-chip{display:inline-flex;width:40px;height:40px;background:#EAF3EC;color:var(--brand);align-items:center;justify-content:center;border-radius:10px;margin-right:12px;}
.vlist-card{background:var(--surface);border:1px solid var(--line);border-radius:14px;overflow:hidden;margin-bottom:20px;box-shadow:var(--shadow-card);transition:box-shadow .3s ease,transform .3s ease;position:relative;}
.vlist-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.vlist-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--accent);opacity:0;transition:opacity .25s ease;}
.vlist-card:hover::before{opacity:1;}
.vlist-inner{display:flex;flex-wrap:wrap;font-size:14px;line-height:1.8;color:var(--muted);border-bottom:1px solid #f1ede3;padding-bottom:14px;margin-bottom:14px;}
.vlist-inner span:first-child{color:var(--text);font-weight:700;margin-right:12px;font-size:16px;}
.vlist-title{font-size:19px;font-weight:800;color:var(--text);line-height:1.5;position:relative;padding-left:0;}
.vlist-title i{color:var(--accent);margin-right:10px;font-size:17px;}
.vlist-title a:hover{color:var(--brand-mid);}
.vlist-card .card-action{display:flex;justify-content:space-between;align-items:center;gap:12px;}
.vlist-meta{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:#8a8d83;background:#fbf8f1;padding:8px 14px;border-radius:999px;}
.vlist-meta i{margin-right:4px;}
.link-read{display:inline-flex;align-items:center;gap:8px;color:var(--brand);font-size:14px;font-weight:700;background:rgba(30,77,59,.08);border-radius:999px;padding:9px 18px;transition:all .25s ease;}
.link-read:hover{background:var(--brand);color:#fff;transform:translateX(2px);}

/* Number badge */
.point-badge{width:30px;height:30px;border-radius:50%;background:#E9F1EB;color:var(--brand);display:inline-flex;align-items:center;justify-content:center;font-weight:800;font-size:14px;margin-right:12px;}
.vlist-main{display:flex;align-items:flex-start;gap:0;}

/* Info strip */
.info-strip{background:#1C2B24;border-radius:16px;color:#fff;padding:28px;margin:48px 0 18px;display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:20px;}
.info-strip h3{font-size:24px;font-weight:800;line-height:1.5;}
.info-strip h3 i{color:var(--accent);margin-right:8px;}
.info-strip p{font-size:14px;opacity:.85;max-width:660px;margin-top:8px;}
.download-call{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.download-call a{display:inline-flex;align-items:center;justify-content:center;gap:12px;padding:17px 14px;border-radius:10px;background:rgba(255,255,255,.1);color:#fff;font-size:15px;font-weight:700;border:1px solid rgba(255,255,255,.2);transition:background .25s ease,transform .3s ease;}
.download-call a:hover{background:var(--accent);color:#1C2B24;transform:translateY(-3px);}

/* Data / Process */
.steps-section{padding:62px 0;background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.steps-section::before{content:"";display:block;width:70px;height:3px;background:var(--accent);margin-bottom:28px;border-radius:9px;}
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.step-item{position:relative;}
.step-item::after{content:"";position:absolute;top:32px;left:calc(100% - 20px);width:20px;height:1px;background:var(--line);z-index:0;}
.step-item:last-child::after{display:none;}
.step-icon{display:inline-flex;width:64px;height:64px;border-radius:18px;background:#E6EFE9;color:var(--brand);align-items:center;justify-content:center;font-size:24px;margin-bottom:18px;z-index:1;position:relative;}
.step-item h4{font-size:17px;font-weight:800;margin-bottom:8px;}
.step-item p{font-size:14px;color:var(--muted);line-height:1.75;}

/* CTA section */
.cta-banner{background:linear-gradient(110deg,var(--brand) 0%,var(--brand-mid) 100%);border-radius:20px;padding:48px;position:relative;overflow:hidden;color:#fff;}
.cta-banner::after{content:"米";position:absolute;font-size:160px;color:rgba(255,255,255,.08);top:-25px;right:18px;font-weight:800;}
.cta-flex{position:relative;z-index:2;display:grid;grid-template-columns:1fr auto;gap:28px;align-items:center;}
.cta-flex h2{font-size:clamp(20px,2.5vw,28px);font-weight:800;line-height:1.4;}
.cta-flex p{color:rgba(255,255,255,.88);font-size:15px;margin-top:6px;}
.cta-buttons{display:flex;flex-wrap:wrap;gap:12px;}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;border-radius:8px;border:0;padding:0 22px;min-height:46px;cursor:pointer;transition:all .25s ease;font-size:15px;}
.btn-xl{min-height:52px;padding:0 28px;font-size:16px;}
.btn-download-primary{background:var(--brand);color:#fff;}
.btn-download-primary i{margin-right:6px;}
.btn-download-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:0 10px 24px rgba(23,61,47,.22);}
.btn-accent{background:var(--accent);color:var(--text);font-weight:700;}
.btn-accent:hover{background:#a9834d;color:#fff;transform:translateY(-2px);}
.btn-outline{border:1px solid rgba(255,255,255,.75);color:#fff;background:transparent;}
.btn-outline:hover{background:#fff;color:var(--brand);transform:translateY(-2px);}
.btn-soft{background:#fff;color:var(--brand);border:1px solid #E7Dcc1;}
.btn-soft:hover{background:#FBF6EC;color:var(--brand-dark);transform:translateY(-2px);}

/* FAQ */
.faq-large{background:#fff;border-radius:18px;border:1px solid var(--line);padding:36px;margin-top:56px;}
.faq-large-head h2{font-size:clamp(22px,3vw,30px);font-weight:800;margin-bottom:10px;}
.faq-large-head p{color:var(--muted);font-size:14px;margin-bottom:28px;}
.accordion-item{border-bottom:1px solid var(--line);}
.accordion-panel{width:100%;display:flex;justify-content:space-between;align-items:center;background:transparent;border:0;padding:22px 0;font-size:16px;font-weight:700;color:var(--text);cursor:pointer;gap:16px;text-align:left;min-height:auto;}
.accordion-panel span:first-child{color:var(--accent);margin-right:6px;}
.accordion-panel .acc-icon{color:var(--brand);font-size:22px;transition:transform .3s ease;font-style:normal;}
.accordion-panel[aria-expanded="true"] .acc-icon{transform:rotate(45deg);}
.accordion-content{max-height:0;overflow:hidden;transition:max-height .4s ease;padding:0 6px;}
.accordion-content p{padding-bottom:20px;font-size:15px;color:var(--muted);line-height:1.9;}
.acc-note{font-size:13px;color:var(--muted);margin-top:18px;border-left:3px solid var(--accent);padding-left:12px;line-height:1.8;}

/* Footer */
.footer{margin-top:0;background:#1C2B24;color:#d8ded9;padding-top:62px;}
.footer-top{display:grid;grid-template-columns:1.5fr 1fr 1fr .6fr;gap:34px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.12);}
.footer-brand .logo-text{color:#f5f2ea;}
.footer-brand p{font-size:14px;line-height:1.9;color:#bccfc3;max-width:360px;margin-top:16px;}
.footer h4{color:#f7f3e8;font-size:15px;font-weight:700;margin-bottom:18px;}
.footer-links li{margin-bottom:10px;}
.footer-links a{color:#c8d9cc;font-size:14px;position:relative;padding-left:12px;}
.footer-links a::before{content:"›";position:absolute;left:0;color:var(--accent);}
.footer-links a:hover{color:var(--accent);padding-left:16px;}
.back-top{display:inline-flex;width:42px;height:42px;border:1px solid rgba(255,255,255,.2);border-radius:10px;align-items:center;justify-content:center;color:#fff;margin-top:4px;transition:all .25s ease;}
.back-top:hover{background:var(--accent);border-color:var(--accent);color:#1C2B24;transform:translateY(-4px);}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;padding:28px 0 22px;font-size:13px;color:#aebeb4;}

/* responsive */
@media screen and (max-width:1024px){
  .category-grid{grid-template-columns:1fr;}
  .sticky-side{position:static;}
  .sidebar-card{order:2;} 
  .guide-main{order:1;}
  .steps-grid{grid-template-columns:repeat(2,1fr);gap:30px;padding-left:0;}
  .step-item::after{display:none;}
  .cta-flex{grid-template-columns:1fr;}
  .footer-top{grid-template-columns:1fr 1fr;}
}
@media screen and (max-width:768px){
  .header-brand-row{padding:6px 0;}
  .menu-toggle{display:inline-flex;}
  .header-tools .search-form{display:none;}
  .main-nav-wrap{position:fixed;left:0;right:0;top:68px;bottom:0;background:var(--bg);padding:20px;border-top:1px solid var(--line);overflow-y:auto;}
  .main-nav{display:none;flex-direction:column;gap:2px;}
  .main-nav-wrap.open .main-nav{display:flex;}
  .main-nav > li > a{width:100%;border-radius:8px;border-bottom:1px solid var(--line);}
  .main-nav > li > a{font-size:17px;min-height:52px;}
  .main-nav > li > a.active::after{display:none;}
  .main-nav > li > a.active{background:rgba(30,77,59,.12);color:var(--brand);}
  .mobile-search{display:block;}
  .cat-hero{padding:36px 0;}
  .cat-hero h1{font-size:28px;}
  .vlist-card .card-action{flex-direction:column;align-items:flex-start;gap:10px;}
  .download-call{grid-template-columns:1fr;}
  .cta-banner{padding:30px 22px;}
  .faq-large{padding:22px;}
  .footer-top{grid-template-columns:1fr;}
  .steps-grid{grid-template-columns:1fr;gap:18px;}
  .step-item{padding-left:16px;}
  .step-item::after{display:none;}
}
@media screen and (max-width:520px){
  .container{padding-left:16px;padding-right:16px;}
  .logo{font-size:18px;}
  .logo-mark{width:32px;height:32px;}
  .hero-cta-pill{font-size:12px;padding:6px 10px;}
  .btn-xl{padding:0 18px;font-size:15px;min-height:48px;}
  .footer-bottom{flex-direction:column;text-align:center;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important;}
}

/* roulang page: category3 */
:root {
  --primary: #1E4D3B;
  --primary-dark: #173D2F;
  --primary-mid: #32735B;
  --gold: #C9A26E;
  --gold-soft: #E7D9C2;
  --bg: #F7F4EE;
  --surface: #FFFFFF;
  --text-main: #1C2120;
  --text-soft: #697B72;
  --line: #E4DFD3;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow-sm: 0 1px 2px rgba(30, 60, 40, .06);
  --shadow-md: 0 10px 30px rgba(30, 60, 40, .1);
  --transition: .3s ease;
  --container: 1200px;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  background: var(--bg);
  color: var(--text-main);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: color .25s ease; }
a:hover { color: var(--primary-mid); }

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

section { position: relative; }

header, nav, main, section, article, footer { display: block; }

h1, h2, h3, h4, h5, p { margin-top: 0; }

button, input { font-family: inherit; }

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

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border-radius: var(--radius-sm);
  font-size: 16px;
  font-weight: 600;
  padding: 12px 24px;
  min-height: 48px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .25s ease;
  line-height: 1.2;
  text-align: center;
}

.btn i { font-size: 17px; transition: transform .25s ease; }

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(30,77,59,.18);
}

.btn-primary:hover { background: var(--primary-dark); color: #fff; transform: translateY(-1px); box-shadow: 0 10px 24px rgba(30,77,59,.24); }
.btn-primary:hover i { transform: translateX(3px); }

.btn-outline {
  background: transparent;
  border-color: rgba(30,77,59,.45);
  color: var(--primary);
}

.btn-outline:hover {
  background: rgba(30,77,59,.07);
  border-color: var(--primary);
  color: var(--primary-dark);
}

.btn-gold {
  background: var(--gold);
  color: #1C2B24;
  border-color: var(--gold);
}

.btn-gold:hover {
  background: #B78F5B;
  color: #fff;
  box-shadow: 0 8px 22px rgba(201,162,110,.35);
}

.btn-large { padding: 16px 34px; font-size: 17px; min-height: 54px; border-radius: 8px; }

/* ---------- Header 导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 999;
  background: rgba(247, 244, 238, .96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .3s ease;
}

.site-header.scrolled { box-shadow: 0 8px 24px rgba(40,60,50,.08); }

.header-topbar {
  background: var(--primary);
  color: rgba(255,255,255,.9);
  font-size: 13px;
  letter-spacing: .02em;
  height: 36px;
  display: flex;
  align-items: center;
  overflow: hidden;
  transition: height .3s ease, opacity .3s ease;
}

.site-header.scrolled .header-topbar {
  height: 0;
  opacity: 0;
}

.header-topbar p { margin: 0; display: flex; align-items: center; gap: 8px; }
.header-topbar i { color: var(--gold); font-size: 12px; }

.header-main {
  background: transparent;
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 78px;
  gap: 20px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: max-content;
}

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

.logo-mark {
  width: 38px;
  height: 38px;
  background: var(--primary);
  color: #fff;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(30,77,59,.22);
}

.logo-text {
  font-size: 19px;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: .01em;
}

.logo-text small { color: var(--gold); font-size: 14px; margin-left: 2px; }

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

.site-nav a {
  display: block;
  font-size: 15px;
  padding: 10px 14px;
  border-radius: 6px;
  color: var(--text-main);
  font-weight: 500;
  border-bottom: 2px solid transparent;
  transition: all .2s ease;
}

.site-nav a:hover { color: var(--primary); background: rgba(30,77,59,.05); }
.site-nav a.active { color: var(--primary); font-weight: 700; border-bottom-color: var(--gold); background: transparent; }

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

.search-toggle-box {
  display: flex;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  height: 42px;
  padding: 0 6px 0 16px;
  width: 200px;
  transition: border-color .25s ease, box-shadow .25s ease, width .3s ease;
}

.search-toggle-box:focus-within {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(201,162,110,.15);
  width: 230px;
}

.search-toggle-box input {
  flex: 1;
  border: 0;
  outline: none;
  background: transparent;
  font-size: 14px;
  color: var(--text-main);
  min-width: 0;
}

.search-toggle-box button {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 0;
  background: var(--primary);
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  transition: background .2s ease;
  padding: 0;
}

.search-toggle-box button:hover { background: var(--gold); }

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 8px;
  color: var(--primary);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

/* Mobile nav */

@media screen and (max-width: 960px) {
  .menu-toggle { display: inline-flex; }

  .nav-wrapper {
    flex-wrap: wrap;
    min-height: 68px;
    padding: 10px 0;
  }

  .site-nav {
    flex-basis: 100%;
    display: none;
    border-top: 1px solid var(--line);
    padding-top: 12px;
    margin-top: 6px;
  }

  .site-nav.mobile-open { display: block; }

  .site-nav ul { flex-direction: column; align-items: stretch; gap: 2px; }

  .site-nav a {
    padding: 13px 12px;
    font-size: 16px;
    border-left: 3px solid transparent;
    border-radius: 6px;
  }

  .site-nav a.active {
    border-left-color: var(--gold);
    background: rgba(201,162,110,.08);
  }
}

@media screen and (max-width: 520px) {
  .search-toggle-box { display: none; }
  .brand .logo-text { font-size: 16px; }
}

/* ---------- Hero ---------- */
.cat-hero {
  padding: 52px 0 0;
  background:
    linear-gradient(135deg, rgba(247,244,238,.98) 0%, rgba(231,217,196,.92) 100%),
    url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.cat-hero-inner {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 54px;
  align-items: center;
  padding: 34px 0 46px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-soft);
  margin-bottom: 18px;
  background: rgba(255,255,255,.6);
  padding: 8px 14px;
  border-radius: 999px;
  width: max-content;
  border: 1px solid var(--line);
}

.breadcrumb a { color: var(--primary); }
.breadcrumb i { font-size: 11px; color: var(--gold); }

.cat-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(30,77,59,.08);
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  padding: 7px 14px;
  border-radius: 999px;
  margin-bottom: 18px;
  border: 1px solid rgba(30,77,59,.1);
}

.cat-eyebrow i { color: var(--gold); font-size: 13px; }

.cat-hero h1 {
  font-size: clamp(32px, 4vw, 50px);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: .01em;
  color: var(--text-main);
  margin-bottom: 20px;
}

.cat-hero h1 span {
  color: var(--primary);
  position: relative;
}

.hero-lead {
  font-size: 17px;
  line-height: 1.85;
  color: var(--text-soft);
  max-width: 600px;
  margin-bottom: 28px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 20px;
}

.hero-note {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 22px;
  font-size: 13px;
  color: var(--text-soft);
}

.hero-note i { color: var(--gold); }

.hero-visual {
  position: relative;
}

.hero-figure-wrap {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.8);
  box-shadow: 0 24px 54px rgba(30,60,40,.14);
  background: #fff;
}

.hero-figure-wrap img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  min-height: 260px;
}

.hero-visual-tag {
  position: absolute;
  right: 18px;
  top: 18px;
  background: rgba(255,255,255,.75);
  backdrop-filter: blur(8px);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: 999px;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* status strip */
.status-strip {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px 12px 0 0;
  border-bottom: 0;
  padding: 14px 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
}

.status-strip .status-line {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-soft);
}

.dot-live {
  width: 8px;
  height: 8px;
  background: #4CAF50;
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(76,175,80,.18);
}

.dot-tag {
  background: var(--gold-soft);
  color: #7a5a2b;
  font-size: 12px;
  padding: 2px 10px;
  border-radius: 999px;
  font-weight: 600;
}

/* 通用 section 标题 */
.section-padding { padding: clamp(64px, 8vw, 112px) 0; }
.section-subtitle { color: var(--text-soft); font-size: 17px; max-width: 650px; }

.section-title-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  background: rgba(30,77,59,.09);
  border-radius: 10px;
  color: var(--primary);
  margin-bottom: 12px;
  font-size: 18px;
}

.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: .12em;
  margin-bottom: 12px;
  text-transform: uppercase;
}

/* ---------- 简介 + 数据 ---------- */
.intro-section {
  background: var(--bg);
}

.intro-grid {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 56px;
  align-items: start;
}

.intro-copy h2 {
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 800;
  line-height: 1.35;
  margin-bottom: 20px;
  color: var(--text-main);
}

.intro-copy p { color: var(--text-soft); margin-bottom: 18px; font-size: 16px; }

.intro-list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.intro-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  color: var(--text-main);
  font-weight: 500;
}

.intro-list i {
  color: var(--gold);
  background: rgba(201,162,110,.1);
  border-radius: 50%;
  font-size: 13px;
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 4px;
}

.intro-stack {
  display: grid;
  gap: 18px;
}

.data-block {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow-sm);
  transition: transform .3s ease, box-shadow .3s ease;
}

.data-block:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }

.data-block.accent-dark {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.data-number {
  font-size: 28px;
  font-weight: 800;
  color: var(--primary);
}

.accent-dark .data-number { color: var(--gold); }

.data-block h3 { font-size: 17px; margin: 8px 0 6px; }
.data-block p { font-size: 14px; color: var(--text-soft); margin-bottom: 0; line-height: 1.7; }
.accent-dark p { color: rgba(255,255,255,.8); }

/* ---------- 内容方向卡 ---------- */
.direction-section { background: #fff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

.direction-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 30px;
  margin-bottom: 40px;
}

.direction-header .section-title { font-size: clamp(24px, 3vw, 34px); font-weight: 800; line-height: 1.3; }

.direction-grid {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
}

.direction-card {
  flex: 1 1 30%;
  min-width: 255px;
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  background: #fff;
  transition: all .35s ease;
}

.direction-card:hover { box-shadow: var(--shadow-md); transform: translateY(-6px); }

.direction-media { position: relative; overflow: hidden; margin: 0; }

.direction-media img {
  width: 100%;
  aspect-ratio: 16 / 11;
  object-fit: cover;
  transition: transform .4s ease;
}

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

.direction-body { padding: 22px; }

.direction-card .tag {
  display: inline-block;
  background: rgba(201,162,110,.12);
  color: #8a6a35;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 14px;
}

.direction-card h3 { font-size: 19px; font-weight: 700; margin-bottom: 8px; }
.direction-card p { font-size: 14px; color: var(--text-soft); margin-bottom: 16px; }
.direction-card .read-more { font-size: 14px; font-weight: 600; color: var(--primary); display: inline-flex; align-items: center; gap: 6px; }
.direction-card .read-more i { transition: transform .2s ease; font-size: 12px; }
.direction-card:hover .read-more i { transform: translateX(4px); }

/* ---------- 内容中心 + FAQ ---------- */
.hub-section {
  background: var(--bg);
}

.hub-grid {
  display: grid;
  grid-template-columns: 1.35fr .9fr;
  gap: 46px;
  align-items: start;
  margin-top: 42px;
}

.hub-left h3 {
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 800;
  margin-bottom: 10px;
}

.hub-title-note { color: var(--text-soft); font-size: 15px; margin-bottom: 26px; max-width: 540px; }

.hub-article-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.hub-row {
  display: flex;
  gap: 22px;
  padding: 24px 4px;
  border-bottom: 1px solid var(--line);
  align-items: flex-start;
  transition: all .3s ease;
  border-radius: 6px;
}

.hub-row:hover { border-bottom-color: var(--gold); }

.row-num {
  font-size: 13px;
  font-weight: 700;
  color: var(--gold);
  background: rgba(201,162,110,.13);
  min-width: 42px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  margin-top: 4px;
}

.hub-row-content {
  flex: 1;
}

.hub-meta {
  display: flex;
  gap: 14px;
  font-size: 12px;
  color: var(--text-soft);
  align-items: center;
  margin-bottom: 6px;
  flex-wrap: wrap;
}

.hub-meta .cat-label {
  color: var(--primary);
  background: rgba(30,77,59,.08);
  padding: 3px 10px;
  border-radius: 999px;
  font-weight: 600;
}

.hub-row h4 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 6px;
  line-height: 1.5;
}

.hub-row p {
  color: var(--text-soft);
  font-size: 14px;
  margin-bottom: 10px;
}

.hub-row .read-more { font-size: 13px; color: var(--primary); font-weight: 600; }

/* FAQ */
.faq-panel {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 28px;
  box-shadow: var(--shadow-sm);
}

.faq-panel-title {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.faq-panel-title .title-icon {
  width: 44px;
  height: 44px;
  background: var(--primary);
  border-radius: 12px;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
}

.faq-panel-title h3 { font-size: 20px; font-weight: 800; margin: 0; }

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

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

.faq-question {
  background: transparent;
  border: 0;
  display: flex;
  width: 100%;
  align-items: center;
  gap: 12px;
  text-align: left;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  padding: 18px 4px;
  cursor: pointer;
  transition: all .2s ease;
}

.faq-question:hover { color: var(--primary); }

.faq-icon {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(30,77,59,.08);
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  flex-shrink: 0;
  transition: transform .3s ease;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s ease, opacity .3s ease;
  opacity: 0;
}

.faq-item.active .faq-answer {
  max-height: 420px;
  opacity: 1;
  padding-bottom: 18px;
}

.faq-answer p {
  margin: 0;
  font-size: 14px;
  color: var(--text-soft);
  line-height: 1.85;
  padding-left: 34px;
  border-left: 2px solid var(--gold-soft);
}

.faq-cta { margin-top: 18px; width: 100%; }

/* ---------- CTA 下载 ---------- */
.cta-download {
  background:
    linear-gradient(105deg, rgba(28,43,36,.96), rgba(30,77,59,.94)),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color: #fff;
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}

.cta-inner {
  max-width: 820px;
  margin: 0 auto;
  text-align: center;
}

.cta-badge {
  display: inline-block;
  background: rgba(201,162,110,.2);
  color: var(--gold);
  border: 1px solid rgba(201,162,110,.35);
  border-radius: 999px;
  padding: 6px 18px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
}

.cta-inner h2 {
  font-size: clamp(26px, 3.6vw, 42px);
  font-weight: 800;
  color: #fff;
  line-height: 1.35;
  margin-bottom: 16px;
}

.cta-inner p { color: rgba(255,255,255,.8); font-size: 16px; margin-bottom: 30px; }

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 16px;
}

.cta-qr-hint {
  display: flex;
  align-items: center;
  gap: 10px;
  justify-content: center;
  font-size: 13px;
  color: rgba(255,255,255,.7);
  margin-top: 28px;
}

.cta-qr-hint i { color: var(--gold); background: rgba(255,255,255,.1); width: 48px; height: 48px; display: flex; align-items: center; justify-content: center; border-radius: 10px; font-size: 20px; }

/* ---------- Footer ---------- */
.footer {
  background: #1C2B24;
  color: rgba(255,255,255,.75);
  padding-top: 60px;
  font-size: 14px;
}

.footer-top {
  display: flex;
  gap: 30px;
  justify-content: space-between;
  flex-wrap: wrap;
  padding-bottom: 36px;
}

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

.footer-brand p {
  color: rgba(255,255,255,.6);
  margin-top: 18px;
  line-height: 1.8;
}

.footer .logo-text { color: #fff; }

.footer h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: .02em;
  position: relative;
  padding-bottom: 8px;
}

.footer h4::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 26px;
  height: 2px;
  background: var(--gold);
}

.footer-top > div { min-width: 160px; }

.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.footer-links a {
  color: rgba(255,255,255,.62);
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all .2s ease;
}

.footer-links a i { font-size: 11px; color: var(--gold); }

.footer-links a:hover { color: #fff; transform: translateX(3px); }

.back-top {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 10px;
  color: #fff;
  font-size: 18px;
  transition: all .3s ease;
}

.back-top:hover { background: var(--gold); color: #1C2B24; transform: translateY(-3px); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding: 18px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  color: rgba(255,255,255,.45);
  font-size: 13px;
}

/* ---------- Responsive ---------- */
@media screen and (max-width: 1024px) {
  .cat-hero-inner {
    grid-template-columns: 1fr;
    gap: 38px;
  }

  .hero-figure-wrap { max-width: 640px; }

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

  .intro-stack {
    grid-template-columns: 1fr 1fr;
  }

  .hub-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
}

@media screen and (max-width: 768px) {
  .direction-grid { gap: 14px; }
  .direction-card { flex-basis: 100%; }
  .intro-stack { grid-template-columns: 1fr; }
  .footer-top { flex-direction: column; gap: 26px; }
  .hero-actions .btn { width: 100%; margin-bottom: 0; }
  .cta-buttons .btn { width: 100%; }
  .status-strip { justify-content: flex-start; gap: 12px; }
  .hub-row { flex-direction: column; gap: 8px; padding: 20px 2px; }
  .faq-panel { padding: 20px; }
}

@media screen and (max-width: 520px) {
  .footer-top > div { width: 100%; }
  .footer-bottom { justify-content: center; text-align: center; }
  .logo-text { font-size: 15px; }
  .logo-text small { display: none; }
  .cat-hero h1 { font-size: 30px; }
  .data-block { padding: 20px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *:before, *:after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
}