/* roulang page: index */
:root {
  --color-primary: #E04B2A;
  --color-primary-hover: #C93E1F;
  --color-primary-soft: rgba(224, 75, 42, 0.08);
  --color-secondary: #1D4E3F;
  --color-secondary-hover: #285A4A;
  --color-accent: #F2A33C;
  --color-accent-soft: rgba(242, 163, 60, 0.16);
  --color-bg: #F7F4EE;
  --color-card: #FFFFFF;
  --color-dark: #162A24;
  --color-dark-soft: #1D4E3F;
  --color-text: #262020;
  --color-text-secondary: #5E5550;
  --color-text-muted: #8D8580;
  --color-dark-bg-text: #F4EFE8;
  --color-dark-bg-text-secondary: #B8C9C2;
  --color-border: #ECE3D8;
  --radius-card: 16px;
  --radius-btn: 999px;
  --radius-img: 12px;
  --shadow: 0 2px 10px rgba(40,32,26,0.05);
  --shadow-hover: 0 16px 40px rgba(40,32,26,0.12);
  --font-cn: "PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-en: "Inter","Roboto",system-ui;
  --space-section: 96px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-cn);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 1rem;
  line-height: 1.8;
  letter-spacing: 0.02em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color .14s ease, background .14s ease, border-color .14s ease, box-shadow .14s ease, transform .14s ease; }
a:hover, a:focus { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; letter-spacing: inherit; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 {
  font-weight: 800;
  line-height: 1.35;
  font-family: var(--font-cn);
  color: var(--color-text);
}
h1 { font-size: clamp(2rem, 4vw + 1rem, 3.5rem); }
h2 { font-size: 2rem; }
h3 { font-size: 1.375rem; font-weight: 700; }
p { margin-bottom: 1.25rem; }
a:focus-visible, button:focus-visible, input:focus-visible, .accordion-button:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  box-shadow: none;
}
.container { max-width: 1200px; padding-left: 20px; padding-right: 20px; }
section { padding: var(--space-section) 0; position: relative; }
.btn {
  border-radius: var(--radius-btn);
  font-weight: 700;
  letter-spacing: .02em;
  padding: .75rem 1.75rem;
  transition: transform .14s ease, box-shadow .14s ease, background .14s ease, border-color .14s ease;
}
.btn-lg { padding: .9rem 2.2rem; font-size: 1.0625rem; }
.btn-primary, .btn-primary:hover, .btn-primary:focus {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}
.btn-outline-secondary {
  border: 2px solid var(--color-secondary);
  color: var(--color-secondary);
  background: transparent;
}
.btn-outline-secondary:hover {
  background: rgba(29, 78, 63, .08);
  border-color: var(--color-secondary);
  color: var(--color-secondary);
}
.btn-ghost {
  background: var(--color-bg);
  color: var(--color-secondary);
}
.btn-ghost:hover { background: #FFF; color: var(--color-primary); }
.badge {
  display: inline-flex;
  align-items: center;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: .75rem;
  font-weight: 700;
  border-radius: 6px;
  padding: .35em .7em;
  line-height: 1.2;
  letter-spacing: .04em;
  border: 0;
}
/* top bar */
.topbar {
  background: var(--color-secondary);
  color: var(--color-dark-bg-text-secondary);
  height: 38px;
  display: flex;
  align-items: center;
  font-size: .8125rem;
  line-height: 1.4;
}
.topbar .container { display: flex; align-items: center; gap: 16px; }
.topbar__brand {
  color: var(--color-dark-bg-text);
  font-weight: 700;
  letter-spacing: .08em;
  white-space: nowrap;
}
.topbar__msg {
  flex: 1;
  color: var(--color-dark-bg-text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  text-align: center;
}
.topbar__action {
  color: var(--color-accent);
  font-weight: 700;
  white-space: nowrap;
  flex-shrink: 0;
}
.topbar__action:hover { color: #fff; }
/* main nav */
.mainnav {
  background: var(--color-card);
  position: sticky;
  top: 0;
  z-index: 1030;
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow);
}
.mainnav .container { display: flex; align-items: center; min-height: 76px; gap: 24px; }
.mainnav__logo {
  display: inline-flex;
  align-items: baseline;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-text);
  white-space: nowrap;
  font-family: var(--font-cn);
}
.mainnav__logo span {
  font-family: var(--font-en);
  font-size: .6875rem;
  font-weight: 500;
  margin-left: 5px;
  letter-spacing: .18em;
  color: var(--color-text-muted);
  transform: translateY(-2px);
}
.mainnav__menu {
  display: flex;
  align-items: center;
  gap: 28px;
  margin-bottom: 0;
  margin-left: auto;
}
.mainnav__menu a {
  font-size: .9375rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  position: relative;
  padding: 8px 2px;
  white-space: nowrap;
}
.mainnav__menu a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 4px;
  border-radius: 999px;
  background: var(--color-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .14s ease;
}
.mainnav__menu a:hover, .mainnav__menu a.active {
  color: var(--color-primary);
}
.mainnav__menu a.active::after {
  transform: scaleX(1);
}
.mainnav__cta {
  padding: .55rem 1.4rem;
  font-size: .875rem;
  flex-shrink: 0;
}
.mainnav__toggle {
  display: none;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 0;
  border-radius: 12px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  margin-left: auto;
  flex-shrink: 0;
  cursor: pointer;
}
.mainnav__toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
}
.mainnav-offcanvas {
  background: var(--color-bg) !important;
  width: 300px !important;
}
.mainnav-offcanvas .offcanvas-header {
  border-bottom: 1px solid var(--color-border);
  padding: 20px 24px;
}
.mainnav-offcanvas .offcanvas-title {
  font-size: 1.375rem;
  font-weight: 800;
}
.mainnav-offcanvas .offcanvas-body {
  padding: 24px;
}
.mobile-menu a {
  display: block;
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-text);
  padding: 14px 16px;
  border-radius: 12px;
  margin-bottom: 4px;
}
.mobile-menu a:hover, .mobile-menu a.active {
  background: var(--color-primary-soft);
  color: var(--color-primary);
}
.mobile-menu + .btn {
  width: 100%;
  margin-top: 20px;
  border-radius: var(--radius-btn);
}
/* hero */
.hero {
  background-image: linear-gradient(rgba(247,244,238,.95), rgba(247,244,238,.94)), url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  padding: 72px 0 80px;
  position: relative;
}
.hero__inner {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 48px;
  align-items: center;
}
.hero__content h1 {
  margin-bottom: 20px;
  color: var(--color-text);
}
.hero__subtitle {
  font-size: 1.1875rem;
  color: var(--color-secondary);
  font-weight: 700;
  margin-bottom: 24px;
  letter-spacing: .04em;
}
.hero__actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.hero__note {
  font-size: .8125rem;
  color: var(--color-text-muted);
  margin-bottom: 0;
}
.hero__visual {
  position: relative;
  border-radius: 24px;
  min-height: 380px;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center top;
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-hover);
}
.hero__visual::before {
  content: '';
  position: absolute;
  right: -40px;
  bottom: -40px;
  width: 200px;
  height: 200px;
  background: rgba(224, 75, 42, .12);
  transform: rotate(12deg);
  border-radius: 24px;
}
.hero__visual img {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -48%);
  width: 68%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border-radius: 20px;
  box-shadow: var(--shadow-hover);
  border: 4px solid rgba(255,255,255,.85);
}
.hero__visual-fab {
  position: absolute;
  left: 18px;
  bottom: 18px;
  z-index: 2;
  background: var(--color-primary);
  color: #fff;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-hover);
  font-size: 1.125rem;
}
/* mini features */
.mini-features {
  padding: 40px 0 44px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-card);
}
.mini-features__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.mini-feature {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 20px;
  border-radius: var(--radius-card);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  transition: transform .14s ease, box-shadow .14s ease, background .14s ease;
  font-weight: 700;
  color: var(--color-text);
  min-height: 56px;
}
.mini-feature:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  background: #fff;
}
.mini-feature__icon {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.0625rem;
  flex-shrink: 0;
}
/* section head */
.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 36px;
  gap: 16px;
}
.section-head h2 { color: var(--color-text); margin-bottom: 0; }
.section-head__sub {
  color: var(--color-text-secondary);
  font-size: 1rem;
  margin-top: 6px;
  margin-bottom: 0;
}
.section-head__link {
  color: var(--color-primary);
  font-weight: 700;
  font-size: .9375rem;
  white-space: nowrap;
}
.section-head__link:hover { color: var(--color-primary-hover); }
.section-title-wrap {
  margin-bottom: 12px;
}
/* carousel */
.screenshot-slider {
  background: var(--color-bg);
}
.carousel-custom {
  max-width: 880px;
  margin: 0 auto;
  text-align: center;
}
.carousel-custom .carousel-inner {
  border-radius: 20px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-hover);
  overflow: hidden;
  background: var(--color-card);
}
.carousel-custom .carousel-item {
  border-radius: 20px;
}
.carousel-custom .carousel-item img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}
.carousel-caption {
  position: static;
  padding: 20px 24px;
  color: var(--color-text);
  font-size: .9375rem;
  font-weight: 600;
  background: var(--color-card);
  border-top: 1px solid var(--color-border);
}
.carousel-custom .carousel-control-prev,
.carousel-custom .carousel-control-next {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow);
  opacity: 1;
  top: 50%;
  transform: translateY(-50%);
  bottom: auto;
  margin: 0;
  color: var(--color-secondary);
  transition: background .14s ease, color .14s ease, box-shadow .14s ease;
}
.carousel-custom .carousel-control-prev { left: -20px; }
.carousel-custom .carousel-control-next { right: -20px; }
.carousel-custom .carousel-control-prev:hover,
.carousel-custom .carousel-control-next:hover {
  background: var(--color-primary);
  color: #fff;
  box-shadow: var(--shadow-hover);
}
.carousel-custom .carousel-indicators {
  position: static;
  margin-top: 18px;
}
.carousel-custom .carousel-indicators button {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: #D9CFC2;
  border: 0;
  opacity: 1;
  transition: width .14s ease, background .14s ease;
}
.carousel-custom .carousel-indicators button.active {
  width: 24px;
  background: var(--color-accent);
}
/* news list */
.news-section {
  background: var(--color-card);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.news-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.news-card {
  display: grid;
  grid-template-columns: 180px 1fr;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: transform .14s ease, box-shadow .14s ease, background .14s ease;
  min-height: 142px;
}
.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  background: #fff;
}
.news-card__thumb {
  background: #E9E2D6;
  overflow: hidden;
}
.news-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .14s ease;
}
.news-card:hover .news-card__thumb img { transform: scale(1.02); }
.news-card__body {
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.news-card__body h3 {
  font-size: 1.125rem;
  font-weight: 800;
  margin-bottom: 8px;
  color: var(--color-text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-card__body p {
  color: var(--color-text-secondary);
  font-size: .875rem;
  line-height: 1.6;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-card__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: .8125rem;
  color: var(--color-text-muted);
  flex-wrap: wrap;
}
.news-card__meta time { display: inline-flex; align-items: center; gap: 4px; }
.news-card__more {
  margin-left: auto;
  color: var(--color-primary);
  font-weight: 700;
}
.news-card__more::after {
  content: ' →';
}
.news-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  background: var(--color-bg);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-card);
  color: var(--color-text-muted);
  font-size: 1rem;
}
.news-empty svg {
  width: 44px;
  height: 44px;
  margin: 0 auto 12px;
  color: var(--color-primary);
  opacity: .6;
}
/* system requirements */
.sys-req {
  background: var(--color-bg);
}
.req-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.req-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 32px;
  box-shadow: var(--shadow);
}
.req-card__head {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}
.req-card__icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.req-card:nth-child(2) .req-card__icon {
  background: var(--color-accent-soft);
  color: #C77B1C;
}
.req-card__head h3 {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 2px;
}
.req-card__head p {
  font-size: .875rem;
  color: var(--color-text-muted);
  margin-bottom: 0;
}
.req-card__list {
  border-top: 1px solid var(--color-border);
  padding-top: 16px;
  margin-bottom: 20px;
}
.req-card__list li {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 8px 0;
  border-bottom: 1px dashed var(--color-border);
  font-size: .875rem;
}
.req-card__list li span { color: var(--color-text-muted); font-size: .8125rem; }
.req-card__list li strong { color: var(--color-text); font-weight: 700; text-align: right; }
.req-card__link {
  color: var(--color-primary);
  font-weight: 700;
  font-size: .875rem;
}
/* reviews */
.reviews-section {
  background: var(--color-card);
  border-top: 1px solid var(--color-border);
}
.reviews-summary {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 28px;
  padding: 20px 24px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
}
.reviews-summary__score {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-secondary);
  font-family: var(--font-en);
  line-height: 1;
}
.reviews-summary__stars {
  color: var(--color-accent);
  font-size: 1.25rem;
  letter-spacing: .1em;
}
.reviews-summary__count {
  color: var(--color-text-muted);
  font-size: .875rem;
}
.review-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.review-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: transform .14s ease, box-shadow .14s ease;
}
.review-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.review-card__stars {
  color: var(--color-accent);
  font-size: 1.0625rem;
  letter-spacing: .1em;
  margin-bottom: 14px;
}
.review-card__text {
  color: var(--color-text);
  font-size: .9375rem;
  line-height: 1.8;
  margin-bottom: 20px;
  flex: 1;
}
.review-card__user {
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px solid var(--color-border);
  padding-top: 16px;
}
.review-card__avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-secondary);
  color: var(--color-dark-bg-text);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1rem;
  flex-shrink: 0;
}
.review-card__avatar--orange { background: var(--color-primary); }
.review-card__avatar--gold { background: #C77B1C; }
.review-card__user strong {
  display: block;
  font-size: .9375rem;
  font-weight: 700;
}
.review-card__user small {
  color: var(--color-text-muted);
  font-size: .8125rem;
}
/* download CTA */
.download-section {
  background-image: linear-gradient(rgba(22,42,36,.94), rgba(29,78,63,.95)), url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center;
  color: var(--color-dark-bg-text);
  position: relative;
  overflow: hidden;
}
.download-section::after {
  content: '';
  position: absolute;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: rgba(242,163,60,.08);
  bottom: -120px;
  left: -80px;
}
.download-section .container { position: relative; z-index: 1; text-align: center; }
.download-section h2 {
  color: var(--color-dark-bg-text);
  margin-bottom: 12px;
}
.download-section .section-head__sub { color: var(--color-dark-bg-text-secondary); }
.store-btn-group {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin: 36px 0 20px;
  flex-wrap: wrap;
}
.store-btn {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  border-radius: 18px;
  padding: 14px 28px;
  min-width: 230px;
  min-height: 56px;
  justify-content: flex-start;
  transition: transform .14s ease, box-shadow .14s ease, background .14s ease;
  font-weight: 700;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.store-btn--light {
  background: #F7F1E6;
  color: var(--color-text);
}
.store-btn--light:hover {
  background: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  color: var(--color-text);
}
.store-btn--gold {
  background: var(--color-accent);
  border-color: #E08F16;
  color: #3A2C14;
}
.store-btn--gold:hover {
  background: #F8AF50;
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  color: #3A2C14;
}
.store-btn__icon {
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.store-btn__text { text-align: left; line-height: 1.2; }
.store-btn__text small {
  display: block;
  font-size: .75rem;
  font-weight: 500;
  opacity: .8;
  margin-bottom: 2px;
}
.store-btn__text strong {
  font-size: 1rem;
  font-weight: 800;
}
.download-divider {
  display: flex;
  align-items: center;
  gap: 16px;
  max-width: 420px;
  margin: 24px auto;
  color: var(--color-dark-bg-text-secondary);
  font-size: .8125rem;
}
.download-divider::before,
.download-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: rgba(244,239,232,.2);
}
.download-form-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
  margin-top: 12px;
}
.download-qr {
  width: 120px;
  height: 120px;
  background: #fff;
  border-radius: 16px;
  padding: 8px;
  box-shadow: var(--shadow-hover);
}
.download-qr img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 10px;
}
.download-form {
  max-width: 420px;
  width: 100%;
  text-align: left;
}
.download-form label {
  font-size: .8125rem;
  color: var(--color-dark-bg-text-secondary);
  margin-bottom: 8px;
}
.form-brand {
  width: 100%;
  height: 44px;
  border-radius: var(--radius-btn);
  border: 1px solid #D9CFC2;
  background: #fff;
  padding: 0 20px;
  font-size: .9375rem;
  color: var(--color-text);
  transition: border-color .14s ease, box-shadow .14s ease;
}
.form-brand:focus {
  border: 2px solid var(--color-primary);
  box-shadow: none;
  outline: none;
}
.form-btn {
  height: 44px;
  padding: 0 24px;
  border-radius: var(--radius-btn);
  border: 0;
  background: var(--color-primary);
  color: #fff;
  font-weight: 700;
  white-space: nowrap;
  transition: background .14s ease, transform .14s ease;
}
.form-btn:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
}
.download-privacy {
  font-size: .75rem;
  color: var(--color-dark-bg-text-secondary);
  margin-top: 8px;
  text-align: center;
}
/* FAQ */
.faq-section { background: var(--color-bg); }
.accordion {
  max-width: 760px;
  margin: 0 auto;
}
.accordion-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: var(--color-card);
  margin-bottom: 16px;
  overflow: hidden;
  box-shadow: var(--shadow);
}
.accordion-item:has(.accordion-button:not(.collapsed)) {
  border-left: 4px solid var(--color-primary);
}
.accordion-button {
  padding: 22px 24px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  background: var(--color-card);
  border: 0;
  box-shadow: none;
  gap: 12px;
}
.accordion-button:not(.collapsed) {
  background: var(--color-card);
  color: var(--color-primary);
  box-shadow: none;
}
.accordion-button:focus {
  box-shadow: none;
  border: 0;
}
.accordion-button::after {
  background-image: none;
  content: '+';
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--color-primary);
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform .14s ease;
}
.accordion-button:not(.collapsed)::after {
  transform: rotate(45deg);
  background-image: none;
}
.accordion-body {
  padding: 0 24px 22px;
  color: var(--color-text-secondary);
  font-size: .9375rem;
  line-height: 1.8;
}
/* footer */
.footer {
  background: var(--color-dark);
  color: var(--color-dark-bg-text-secondary);
  padding: 64px 0 28px;
  font-size: .875rem;
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}
.footer__brand {
  font-size: 1.4375rem;
  font-weight: 800;
  color: var(--color-dark-bg-text);
  margin-bottom: 12px;
  display: block;
}
.footer__brand span {
  font-family: var(--font-en);
  font-size: .6875rem;
  color: var(--color-dark-bg-text-secondary);
  margin-left: 6px;
  letter-spacing: .16em;
}
.footer__desc {
  color: var(--color-dark-bg-text-secondary);
  line-height: 1.8;
  max-width: 320px;
  margin-bottom: 0;
}
.footer__col h3 {
  color: var(--color-dark-bg-text);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 18px;
}
.footer__col a {
  display: block;
  color: var(--color-dark-bg-text-secondary);
  padding: 4px 0;
  transition: color .14s ease;
}
.footer__col a:hover { color: var(--color-accent); }
.footer__bottom {
  border-top: 1px solid rgba(244,239,232,.12);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  color: var(--color-dark-bg-text-secondary);
  font-size: .8125rem;
}
.footer__bottom a { color: var(--color-dark-bg-text-secondary); }
.footer__bottom a:hover { color: var(--color-accent); }
/* responsive */
@media (max-width: 1199px) {
  .container { max-width: 960px; }
}
@media (max-width: 991px) {
  .mainnav__menu {
    display: none;
  }
  .mainnav__toggle {
    display: flex;
  }
  .mainnav__cta {
    display: none;
  }
  .hero__inner {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .hero__visual {
    min-height: 320px;
  }
  .news-list {
    grid-template-columns: 1fr;
  }
  .footer__grid {
    grid-template-columns: 1fr 1fr;
  }
  .carousel-custom .carousel-control-prev { left: 0; }
  .carousel-custom .carousel-control-next { right: 0; }
}
@media (max-width: 767px) {
  :root { --space-section: 56px; }
  .topbar__msg {
    display: none;
  }
  .container { padding-left: 16px; padding-right: 16px; }
  .hero {
    padding: 48px 0 56px;
  }
  .hero__actions .btn {
    width: 100%;
  }
  .mini-features__grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }
  .review-grid {
    grid-template-columns: 1fr;
  }
  .req-grid {
    grid-template-columns: 1fr;
  }
  .store-btn-group {
    flex-direction: column;
    align-items: center;
  }
  .store-btn {
    width: 100%;
    max-width: 360px;
  }
  .download-form-wrap {
    flex-direction: column;
    gap: 20px;
  }
  .download-form {
    max-width: 360px;
  }
  .news-card {
    grid-template-columns: 120px 1fr;
  }
  .news-card__body {
    padding: 14px 16px;
  }
  .news-card__body p {
    display: none;
  }
  .footer__grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}
@media (max-width: 575px) {
  .hero__visual {
    min-height: 220px;
  }
  .hero__visual img {
    width: 55%;
  }
  .news-card {
    grid-template-columns: 1fr;
  }
  .news-card__thumb {
    height: 160px;
  }
  .carousel-caption {
    font-size: .8125rem;
    padding: 14px;
  }
  .req-card {
    padding: 24px;
  }
  .review-card {
    padding: 20px;
  }
  .accordion-button {
    font-size: .9375rem;
    padding: 18px 18px;
  }
  .accordion-body {
    padding: 0 18px 18px;
  }
}
/* print */
@media print {
  .topbar, .mainnav, .footer, .btn, .store-btn-group, .download-form-wrap, .news-card__more, .carousel-control-prev, .carousel-control-next, .carousel-indicators {
    display: none !important;
  }
  body { background: #fff; color: #000; }
  .container { max-width: 100%; }
  section { padding: 24px 0; }
  .news-card { background: #fff; }
  a { color: #000; }
  .accordion-button { background: #fff !important; }
  .accordion-item { border: 1px solid #ccc; }
}

/* roulang page: category1 */
:root {
  --primary: #E04B2A;
  --primary-dark: #C43E20;
  --primary-light: #FCEAE4;
  --secondary: #1D4E3F;
  --secondary-dark: #162A24;
  --accent: #F2A33C;
  --bg: #F7F4EE;
  --card-bg: #FFFFFF;
  --text: #262020;
  --text-secondary: #5E5550;
  --text-muted: #8D8580;
  --text-on-dark: #F4EFE8;
  --text-secondary-dark: #B8C9C2;
  --border: #ECE3D8;
  --border-input: #D9CFC2;
  --radius: 16px;
  --radius-lg: 24px;
  --radius-sm: 8px;
  --radius-pill: 999px;
  --shadow-sm: 0 2px 10px rgba(40,32,26,0.05);
  --shadow-md: 0 8px 24px rgba(40,32,26,0.08);
  --shadow-lg: 0 16px 40px rgba(40,32,26,0.12);
  --transition: 140ms ease;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-num: "Inter", "Roboto", system-ui, sans-serif;
  --space-section: 96px;
  --space-section-mobile: 56px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.8;
  letter-spacing: 0.02em;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1200px;
}

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

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

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

h1, h2, h3, h4, h5, h6 {
  font-weight: 800;
  color: var(--text);
  line-height: 1.3;
}

h1 {
  font-size: clamp(2rem, 4vw + 1rem, 3.5rem);
  letter-spacing: 0.01em;
}

h2 {
  font-size: 2rem;
  margin-bottom: 12px;
}

h3 {
  font-size: 1.375rem;
  margin-bottom: 8px;
}

p {
  margin-bottom: 0;
}

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

/* 顶部信息条 */
.topbar {
  background: var(--secondary);
  color: var(--text-on-dark);
  font-size: 13px;
  height: 38px;
  display: flex;
  align-items: center;
}

.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
}

.topbar__brand {
  font-weight: 700;
  color: var(--text-on-dark);
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.topbar__notice {
  color: var(--text-secondary-dark);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  text-align: center;
}

.topbar__action {
  color: var(--accent);
  font-weight: 600;
  white-space: nowrap;
  transition: color var(--transition);
}

.topbar__action:hover {
  color: #fff;
}

/* 主导航 */
.mainnav {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1030;
  transition: box-shadow var(--transition);
}

.mainnav.is-sticky {
  box-shadow: var(--shadow-md);
}

.mainnav > .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 20px;
}

.mainnav__logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: 0.02em;
  line-height: 1.2;
  white-space: nowrap;
}

.mainnav__logo span {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.3em;
  text-transform: uppercase;
}

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

.mainnav__menu {
  display: flex;
  list-style: none;
  gap: 8px;
  margin: 0;
  padding: 0;
  align-items: center;
}

.mainnav__menu li a {
  display: block;
  padding: 10px 14px;
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 15px;
  border-radius: var(--radius-sm);
  position: relative;
  transition: color var(--transition), background var(--transition);
}

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

.mainnav__menu li a.active {
  color: var(--primary);
}

.mainnav__menu li a.active::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: -2px;
  height: 4px;
  border-radius: 2px;
  background: var(--primary);
}

.mainnav__cta {
  white-space: nowrap;
}

.mainnav__toggle {
  display: none;
  background: none;
  border: none;
  width: 44px;
  height: 44px;
  padding: 10px;
  cursor: pointer;
  border-radius: var(--radius-sm);
}

.mainnav__toggle span {
  display: block;
  width: 100%;
  height: 3px;
  background: var(--primary);
  border-radius: 3px;
  margin: 5px 0;
  transition: transform var(--transition), opacity var(--transition);
}

.mainnav__toggle:hover span {
  background: var(--primary-dark);
}

/* 按钮体系覆盖 Bootstrap */
.btn {
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 15px;
  padding: 12px 32px;
  border: 2px solid transparent;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition), color var(--transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
}

.btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
  box-shadow: none;
}

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

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

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

.btn-outline {
  background: transparent;
  border-color: rgba(255,255,255,0.55);
  color: var(--text-on-dark);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: #fff;
  color: #fff;
  transform: translateY(-2px);
}

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

.btn-outline-dark:hover {
  background: rgba(29,78,63,0.08);
  border-color: var(--secondary);
  color: var(--secondary);
}

.btn-accent {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--secondary-dark);
}

.btn-accent:hover {
  background: #e6952f;
  border-color: #e6952f;
  color: var(--secondary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-light {
  background: var(--bg);
  border-color: var(--bg);
  color: var(--secondary-dark);
}

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

/* 分类页 Hero */
.category-hero {
  position: relative;
  padding: 96px 0 88px;
  background: linear-gradient(105deg, rgba(22,42,36,0.95) 0%, rgba(22,42,36,0.82) 42%, rgba(29,78,63,0.62) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  color: var(--text-on-dark);
}

.category-hero__breadcrumb {
  font-size: 13px;
  color: var(--text-secondary-dark);
  margin-bottom: 20px;
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.category-hero__breadcrumb a {
  color: var(--text-secondary-dark);
  border-bottom: 1px solid transparent;
  transition: color var(--transition), border-color var(--transition);
}

.category-hero__breadcrumb a:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.category-hero__breadcrumb .sep {
  color: var(--text-muted);
  margin: 0 2px;
}

.category-hero__breadcrumb .current {
  color: var(--text-on-dark);
  font-weight: 600;
}

.category-hero h1 {
  color: var(--text-on-dark);
  max-width: 760px;
  margin-bottom: 16px;
}

.category-hero__lead {
  font-size: 1.25rem;
  color: var(--text-secondary-dark);
  max-width: 640px;
  margin-bottom: 32px;
  letter-spacing: 0.06em;
}

.category-hero__actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* 数据条 */
.stats-bar {
  background: var(--secondary-dark);
  padding: 40px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.stats-bar__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.stats-bar__item {
  text-align: center;
  padding: 8px 0;
  position: relative;
}

.stats-bar__item + .stats-bar__item::before {
  content: "";
  position: absolute;
  left: -16px;
  top: 20%;
  height: 60%;
  width: 1px;
  background: rgba(255,255,255,0.1);
}

.stats-bar__num {
  font-family: var(--font-num);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.2;
}

.stats-bar__label {
  font-size: 14px;
  color: var(--text-secondary-dark);
  margin-top: 4px;
}

/* 区块通用头部 */
.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 56px;
}

.section-head p {
  color: var(--text-secondary);
  font-size: 15px;
  margin-top: 8px;
}

.section-kicker {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--primary);
  background: var(--primary-light);
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 12px;
  letter-spacing: 0.06em;
}

/* 频道特色 */
.features-section {
  background: var(--bg);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px 28px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  height: 100%;
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.feature-card__icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 24px;
}

.feature-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* 热门赛事快报 */
.news-section {
  background: var(--card-bg);
}

.news-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.news-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.news-card__cover {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--border);
}

.news-card__cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 180ms ease;
}

.news-card:hover .news-card__cover img {
  transform: scale(1.03);
}

.news-card__tag {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(22,42,36,0.82);
  color: var(--text-on-dark);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  backdrop-filter: blur(4px);
}

.news-card__body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.news-card__body h3 {
  font-size: 1.125rem;
  line-height: 1.4;
  margin-bottom: 10px;
  color: var(--text);
}

.news-card__body h3 a {
  color: inherit;
}

.news-card__body h3 a:hover {
  color: var(--primary);
}

.news-card__body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
  flex: 1;
}

.news-card__meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  padding-top: 14px;
}

.news-card__meta a {
  font-weight: 600;
  color: var(--primary);
}

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

/* 适用场景 */
.scenario-section {
  background: var(--bg);
  position: relative;
}

.scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.scenario-item {
  position: relative;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.scenario-item__step {
  font-family: var(--font-num);
  font-size: 3rem;
  font-weight: 800;
  color: var(--primary-light);
  line-height: 1;
  margin-bottom: 8px;
  letter-spacing: -0.04em;
}

.scenario-item__icon {
  font-size: 28px;
  margin-bottom: 16px;
  display: block;
}

.scenario-item h3 {
  font-size: 1.125rem;
  margin-bottom: 8px;
}

.scenario-item p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* 使用流程 */
.process-section {
  background: var(--card-bg);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
  counter-reset: process;
  position: relative;
}

.process-steps::before {
  content: "";
  position: absolute;
  top: 40px;
  left: 16%;
  right: 16%;
  height: 2px;
  background: repeating-linear-gradient(90deg, var(--primary) 0 8px, transparent 8px 16px);
  opacity: 0.3;
}

.process-step {
  text-align: center;
  position: relative;
  padding: 0 12px;
}

.process-step__num {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--secondary);
  color: var(--accent);
  font-family: var(--font-num);
  font-size: 1.75rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  position: relative;
  z-index: 1;
  border: 4px solid var(--card-bg);
  box-shadow: var(--shadow-sm);
}

.process-step h3 {
  font-size: 1.125rem;
  margin-bottom: 8px;
}

.process-step p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

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

.accordion {
  max-width: 800px;
  margin: 0 auto;
}

.accordion-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 16px;
  background: var(--card-bg);
  overflow: hidden;
  transition: box-shadow var(--transition), border-color var(--transition);
}

.accordion-item:has(.accordion-button:not(.collapsed)) {
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.accordion-button {
  padding: 22px 24px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  background: var(--card-bg);
  border-radius: var(--radius) !important;
  position: relative;
  transition: background var(--transition), color var(--transition);
}

.accordion-button::after {
  width: 28px;
  height: 28px;
  background-size: 18px;
  background-position: center;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23E04B2A' stroke-width='2.5' stroke-linecap='round'%3E%3Cpath d='M12 5v14M5 12h14'/%3E%3C/svg%3E");
  transition: transform var(--transition);
  flex-shrink: 0;
  opacity: 1;
  border-radius: 50%;
  background-color: var(--primary-light);
}

.accordion-button:not(.collapsed)::after {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23E04B2A' stroke-width='2.5' stroke-linecap='round'%3E%3Cpath d='M5 12h14'/%3E%3C/svg%3E");
  transform: rotate(180deg);
}

.accordion-button:not(.collapsed) {
  background: var(--primary-light);
  color: var(--primary);
  box-shadow: none;
}

.accordion-button:focus {
  box-shadow: none;
  border-color: var(--primary);
}

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

.accordion-body {
  padding: 0 24px 24px;
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  border-top: 1px solid var(--primary-light);
  margin-top: 0;
  padding-top: 20px;
}

/* CTA 区块 */
.cta-section {
  position: relative;
  background: linear-gradient(100deg, rgba(22,42,36,0.95) 0%, rgba(22,42,36,0.85) 60%, rgba(29,78,63,0.75) 100%), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  padding: 96px 0;
  color: var(--text-on-dark);
  text-align: center;
}

.cta-section h2 {
  color: var(--text-on-dark);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  margin-bottom: 12px;
}

.cta-section p {
  color: var(--text-secondary-dark);
  margin-bottom: 36px;
  font-size: 16px;
}

.cta-section__buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 56px;
}

.store-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-height: 60px;
  padding: 12px 28px;
  border-radius: var(--radius-pill);
  border: 2px solid transparent;
  text-align: left;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition);
  background: var(--card-bg);
  color: var(--secondary-dark);
}

.store-btn:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  color: var(--secondary-dark);
}

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

.store-btn__icon {
  font-size: 28px;
  line-height: 1;
}

.store-btn__text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.store-btn__text small {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 500;
}

.store-btn__text strong {
  font-size: 16px;
  font-weight: 800;
}

.cta-form {
  max-width: 520px;
  margin: 0 auto;
}

.cta-form .form-control {
  border-radius: var(--radius-pill);
  height: 52px;
  border: 1px solid var(--border-input);
  padding: 0 24px;
  font-size: 15px;
  background: var(--card-bg);
  color: var(--text);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.cta-form .form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(224,75,42,0.2);
}

.cta-form .form-control::placeholder {
  color: var(--text-muted);
}

.cta-form .btn {
  height: 52px;
  padding: 0 32px;
}

/* 页脚 */
.footer {
  background: var(--secondary-dark);
  color: var(--text-secondary-dark);
  padding: 64px 0 40px;
  font-size: 14px;
}

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

.footer__brand {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-on-dark);
  display: inline-block;
  line-height: 1.2;
  margin-bottom: 12px;
}

.footer__brand span {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.3em;
  text-transform: uppercase;
}

.footer__desc {
  color: var(--text-secondary-dark);
  line-height: 1.7;
  margin-top: 12px;
  max-width: 320px;
}

.footer__col h3 {
  color: var(--text-on-dark);
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: 0.04em;
}

.footer__col a {
  display: block;
  color: var(--text-secondary-dark);
  padding: 6px 0;
  transition: color var(--transition), padding-left var(--transition);
}

.footer__col a:hover {
  color: var(--accent);
  padding-left: 6px;
}

.footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: var(--text-muted);
}

.footer__bottom a {
  color: var(--text-secondary-dark);
}

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

/* offcanvas 移动导航 */
.offcanvas {
  background: var(--card-bg);
  max-width: 320px;
}

.offcanvas-header {
  border-bottom: 1px solid var(--border);
  padding: 20px 24px;
}

.offcanvas-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text);
}

.offcanvas-title span {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.3em;
  display: block;
}

.offcanvas .btn-close {
  background: transparent;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.7;
}

.offcanvas .btn-close:hover {
  opacity: 1;
}

.offcanvas-body {
  padding: 24px;
}

.offcanvas-body ul {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
}

.offcanvas-body ul li a {
  display: block;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 15px;
  transition: background var(--transition), color var(--transition);
}

.offcanvas-body ul li a:hover {
  background: var(--primary-light);
  color: var(--primary);
}

.offcanvas-body ul li a.active {
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 700;
}

.offcanvas-body .btn {
  width: 100%;
}

/* 响应式 */
@media (max-width: 1199.98px) {
  .container {
    max-width: 960px;
  }
}

@media (max-width: 991.98px) {
  .mainnav__menu {
    display: none;
  }
  .mainnav__cta {
    display: none;
  }
  .mainnav__toggle {
    display: block;
  }
  .stats-bar__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
  .stats-bar__item + .stats-bar__item::before {
    display: none;
  }
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .scenario-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .process-steps {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .process-steps::before {
    display: none;
  }
  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 767.98px) {
  .topbar__notice {
    display: none;
  }
  .topbar__inner {
    justify-content: space-between;
  }
  .category-hero {
    padding: 64px 0 56px;
  }
  .category-hero__actions .btn {
    width: 100%;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .scenario-grid {
    grid-template-columns: 1fr;
  }
  .section-padding {
    padding: var(--space-section-mobile) 0;
  }
  .footer__grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer__bottom {
    flex-direction: column;
    text-align: center;
  }
  .cta-section {
    padding: 64px 0;
  }
  .cta-section__buttons {
    flex-direction: column;
    align-items: stretch;
    max-width: 320px;
    margin-left: auto;
    margin-right: auto;
  }
  .store-btn {
    width: 100%;
  }
  .cta-form .row {
    flex-direction: column;
    gap: 12px;
  }
  .cta-form .col-auto {
    width: 100%;
  }
  .cta-form .btn {
    width: 100%;
  }
}

@media (max-width: 575.98px) {
  .stats-bar__grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }
  .stats-bar__num {
    font-size: 1.6rem;
  }
  h1 {
    font-size: 1.9rem;
  }
  h2 {
    font-size: 1.55rem;
  }
  .news-card__body {
    padding: 18px;
  }
  .mainnav > .container {
    min-height: 64px;
  }
  .mainnav__logo {
    font-size: 1.3rem;
  }
}

/* 打印 */
@media print {
  .topbar,
  .mainnav,
  .mainnav__toggle,
  .offcanvas,
  .category-hero__actions,
  .cta-section,
  .footer {
    display: none !important;
  }
  .category-hero {
    background: var(--bg) !important;
    color: var(--text) !important;
    padding: 24px 0;
  }
  .category-hero h1 {
    color: var(--text);
  }
  .category-hero__lead {
    color: var(--text-secondary);
  }
  .category-hero__breadcrumb a,
  .category-hero__breadcrumb .current {
    color: var(--text-secondary);
  }
  body {
    background: #fff;
  }
}

/* roulang page: article */
:root {
  --primary: #E04B2A;
  --primary-dark: #C2401F;
  --primary-soft: rgba(224, 75, 42, 0.08);
  --secondary: #1D4E3F;
  --secondary-dark: #162A24;
  --secondary-soft: rgba(29, 78, 63, 0.08);
  --accent: #F2A33C;
  --bg: #F7F4EE;
  --card-bg: #FFFFFF;
  --text: #262020;
  --text-2: #5E5550;
  --text-3: #8D8580;
  --text-dark: #F4EFE8;
  --text-dark-2: #B8C9C2;
  --border: #ECE3D8;
  --border-dark: #D9CFC2;
  --radius: 16px;
  --radius-sm: 12px;
  --radius-btn: 999px;
  --shadow-sm: 0 2px 10px rgba(40, 32, 26, 0.05);
  --shadow-lg: 0 16px 40px rgba(40, 32, 26, 0.12);
  --transition: 140ms ease;
  --font-cn: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-en: "Inter", "Roboto", system-ui;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-cn);
  font-size: 1rem;
  line-height: 1.8;
  letter-spacing: 0.02em;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; height: auto; }
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-dark); }
p { margin: 0 0 1.25rem; }
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-cn);
  font-weight: 800;
  color: var(--text);
  line-height: 1.3;
  margin: 0 0 0.75rem;
}
h1 { font-size: clamp(2rem, 4vw + 1rem, 3.5rem); }
h2 { font-size: 2rem; }
h3 { font-size: 1.375rem; }
button, input, select, textarea { font-family: inherit; }
button { cursor: pointer; }
.container { max-width: 1200px; }

.topbar {
  background: var(--secondary);
  color: var(--text-dark);
  font-size: 0.8125rem;
  line-height: 38px;
  min-height: 38px;
}
.topbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.topbar__brand {
  font-weight: 600;
  color: #fff;
  letter-spacing: 0.04em;
}
.topbar__notice {
  color: var(--text-dark-2);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.topbar__action {
  color: var(--accent);
  font-weight: 600;
  white-space: nowrap;
  padding: 0 4px;
}
.topbar__action:hover { color: #fff; }

.mainnav {
  position: sticky;
  top: 0;
  z-index: 1030;
  background: #fff;
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition);
}
.mainnav.is-scrolled { box-shadow: var(--shadow-sm); }
.mainnav .container {
  display: flex;
  align-items: center;
  min-height: 72px;
  gap: 24px;
  flex-wrap: nowrap;
}
.mainnav__logo {
  font-family: var(--font-cn);
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--text);
  letter-spacing: 0.02em;
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
  white-space: nowrap;
}
.mainnav__logo span {
  font-family: var(--font-en);
  font-weight: 600;
  font-size: 0.72rem;
  color: var(--primary);
  letter-spacing: 0.08em;
}
.mainnav__logo:hover { color: var(--primary); }
.mainnav__menu {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 28px;
  margin: 0;
  padding: 0;
  flex: 1;
}
.mainnav__menu a {
  color: var(--text-2);
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 8px 2px;
  position: relative;
  display: inline-block;
}
.mainnav__menu a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 4px;
  border-radius: 4px;
  background: var(--primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.mainnav__menu a:hover,
.mainnav__menu a.active { color: var(--text); }
.mainnav__menu a:hover::after,
.mainnav__menu a.active::after { transform: scaleX(1); }
.mainnav__cta { margin-left: auto; }
.mainnav__toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 0;
  background: transparent;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  align-items: center;
  padding: 0;
}
.mainnav__toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

.btn {
  border-radius: var(--radius-btn);
  font-weight: 600;
  padding: 12px 28px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid transparent;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition);
  font-size: 0.9375rem;
  letter-spacing: 0.03em;
  line-height: 1.4;
}
.btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}
.btn-primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 18px rgba(224, 75, 42, 0.22);
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: none;
}

.badge-custom {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--primary);
  background: var(--primary-soft);
  border-radius: 6px;
}

.article-main {
  padding: 48px 0 72px;
  background: var(--bg);
}
.breadcrumb-custom {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  font-size: 0.8125rem;
  color: var(--text-3);
  margin-bottom: 32px;
  gap: 6px;
}
.breadcrumb-custom a {
  color: var(--text-3);
  text-decoration: none;
  transition: color var(--transition);
}
.breadcrumb-custom a:hover { color: var(--primary); }
.breadcrumb-custom__sep { opacity: 0.5; }
.breadcrumb-custom__current {
  color: var(--text);
  font-weight: 600;
  max-width: 280px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.article-wrap { max-width: 860px; margin: 0 auto; }
.article-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 40px;
}
.article-head {
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}
.article-head__meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.article-head__time {
  font-size: 0.875rem;
  color: var(--text-3);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.article-head__title {
  font-size: clamp(1.6rem, 3vw + 0.5rem, 2.4rem);
  line-height: 1.35;
  margin: 0;
  font-weight: 800;
  overflow-wrap: break-word;
}

.article-body {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text);
  overflow-wrap: break-word;
}
.article-body p { margin-bottom: 24px; }
.article-body h2 {
  font-size: 1.6rem;
  margin-top: 40px;
  margin-bottom: 16px;
}
.article-body h3 {
  font-size: 1.25rem;
  margin-top: 32px;
  margin-bottom: 12px;
}
.article-body a {
  color: var(--primary);
  text-decoration: underline;
}
.article-body a:hover { color: var(--primary-dark); }
.article-body img {
  border-radius: var(--radius-sm);
  margin: 24px 0;
  box-shadow: var(--shadow-sm);
  max-width: 100%;
  height: auto;
}
.article-body blockquote {
  margin: 24px 0;
  padding: 16px 20px;
  background: var(--bg);
  border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-2);
}
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.article-body th,
.article-body td {
  border: 1px solid var(--border);
  padding: 12px 14px;
  font-size: 0.9375rem;
}
.article-body th {
  background: var(--bg);
  font-weight: 600;
}
.article-body ul,
.article-body ol {
  margin-bottom: 24px;
  padding-left: 1.4em;
}
.article-body li { margin-bottom: 6px; }
.article-body pre {
  background: var(--secondary-dark);
  color: var(--text-dark);
  padding: 18px 20px;
  border-radius: var(--radius-sm);
  overflow-x: auto;
  font-family: var(--font-en);
  font-size: 0.875rem;
  margin: 24px 0;
}
.article-body code {
  font-family: var(--font-en);
  background: var(--secondary-soft);
  color: var(--secondary);
  padding: 2px 6px;
  border-radius: 6px;
  font-size: 0.875em;
}
.article-body pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}

.article-empty {
  text-align: center;
  padding: 60px 20px;
  background: var(--bg);
  border-radius: var(--radius-sm);
  border: 1px dashed var(--border-dark);
}
.article-empty__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 800;
  font-size: 1.5rem;
  margin-bottom: 16px;
}
.article-empty h2 {
  font-size: 1.5rem;
  margin-bottom: 8px;
}
.article-empty p {
  color: var(--text-2);
  margin-bottom: 24px;
}

.article-foot {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.article-foot__link {
  flex: 1;
  display: block;
  background: var(--bg);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  transition: background var(--transition), box-shadow var(--transition);
}
.article-foot__link:hover {
  background: #fff;
  box-shadow: var(--shadow-sm);
  color: var(--primary);
}
.article-foot__label {
  display: block;
  font-size: 0.75rem;
  color: var(--text-3);
  margin-bottom: 4px;
}
.article-foot__title {
  font-weight: 600;
  color: var(--text);
  font-size: 0.9375rem;
}
.article-foot__back {
  padding: 12px 20px;
  white-space: nowrap;
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-btn);
  font-size: 0.875rem;
  color: var(--text-2);
  transition: border-color var(--transition), color var(--transition), background var(--transition);
}
.article-foot__back:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-soft);
}

.related-section {
  padding: 72px 0;
  background: #fff;
  border-top: 1px solid var(--border);
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 36px;
  gap: 24px;
}
.section-head__text h2 { margin-bottom: 4px; }
.section-head__text p {
  color: var(--text-2);
  font-size: 0.9375rem;
  margin: 0;
}
.section-head__link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}
.section-head__link:hover { color: var(--primary-dark); }

.related-card {
  display: block;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
  height: 100%;
}
.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.related-card__thumb {
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--bg);
}
.related-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}
.related-card:hover .related-card__thumb img {
  transform: scale(1.02);
}
.related-card__body { padding: 20px; }
.related-card__body h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
  transition: color var(--transition);
}
.related-card__body p {
  font-size: 0.875rem;
  color: var(--text-2);
  margin: 0;
  line-height: 1.6;
}
.related-card:hover h3 { color: var(--primary); }

.cta-section {
  padding: 72px 0;
  background: var(--secondary-dark);
}
.cta-box {
  background: linear-gradient(135deg, var(--secondary-dark), var(--secondary));
  border-radius: 24px;
  padding: 48px;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
}
.cta-box::before {
  content: "";
  position: absolute;
  top: -40px;
  right: -40px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(242, 163, 60, 0.1);
}
.cta-box__content { position: relative; z-index: 1; flex: 1; }
.cta-box h2 {
  font-size: clamp(1.5rem, 2.5vw + 0.5rem, 2.2rem);
  color: #fff;
  margin-bottom: 12px;
}
.cta-box p {
  color: var(--text-dark-2);
  font-size: 0.9375rem;
  margin-bottom: 28px;
  max-width: 420px;
}
.cta-box__buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}
.btn-app {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: var(--bg);
  border-radius: var(--radius-btn);
  padding: 12px 28px;
  color: var(--secondary-dark);
  text-align: left;
  min-width: 180px;
  border: 1px solid transparent;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}
.btn-app:hover {
  background: var(--accent);
  color: var(--secondary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}
.btn-app__icon {
  font-size: 1.5rem;
  display: inline-flex;
  align-items: center;
}
.btn-app__text { display: flex; flex-direction: column; }
.btn-app__small { font-size: 0.7rem; opacity: 0.75; line-height: 1.2; }
.btn-app__big { font-size: 1rem; font-weight: 700; line-height: 1.3; }
.cta-form label {
  display: block;
  font-size: 0.875rem;
  color: var(--text-dark-2);
  margin-bottom: 10px;
}
.cta-form__row {
  display: flex;
  gap: 12px;
  max-width: 440px;
}
.cta-form__row input {
  flex: 1;
  min-height: 48px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-btn);
  padding: 0 22px;
  color: #fff;
  font-size: 0.9375rem;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.cta-form__row input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(224, 75, 42, 0.35);
}
.cta-form__row input::placeholder { color: rgba(244, 239, 232, 0.5); }
.cta-box__qr {
  text-align: center;
  flex-shrink: 0;
  width: 180px;
  padding: 20px;
  background: var(--bg);
  border-radius: var(--radius);
}
.cta-box__qr img {
  border-radius: var(--radius-sm);
  width: 120px;
  height: 120px;
  margin: 0 auto 12px;
  object-fit: cover;
}
.cta-box__qr span {
  font-size: 0.8125rem;
  color: var(--secondary);
  font-weight: 600;
}

.faq-section {
  padding: 72px 0;
  background: var(--bg);
}
.faq-accordion .accordion-item {
  border: 1px solid var(--border);
  border-radius: var(--radius) !important;
  margin-bottom: 16px;
  overflow: hidden;
  background: #fff;
  box-shadow: none;
}
.faq-accordion .accordion-item:last-child { margin-bottom: 0; }
.faq-accordion .accordion-header .accordion-button {
  font-weight: 600;
  font-size: 1rem;
  color: var(--text);
  background: #fff;
  padding: 20px 24px;
  box-shadow: none;
  border-radius: var(--radius);
  transition: background var(--transition), color var(--transition);
}
.faq-accordion .accordion-button:focus {
  box-shadow: 0 0 0 2px var(--primary);
}
.faq-accordion .accordion-button:not(.collapsed) {
  background: var(--primary-soft);
  color: var(--primary-dark);
}
.faq-accordion .accordion-button::after {
  background-image: none;
  content: "+";
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--primary);
  transform: none;
  width: auto;
  height: auto;
  font-family: sans-serif;
  line-height: 1;
}
.faq-accordion .accordion-button:not(.collapsed)::after {
  content: "−";
  transform: none;
}
.faq-accordion .accordion-body {
  padding: 0 24px 20px;
  color: var(--text-2);
  line-height: 1.7;
  font-size: 0.9375rem;
}

.footer {
  background: var(--secondary-dark);
  color: var(--text-dark-2);
  padding: 56px 0 0;
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer__brand {
  font-size: 1.25rem;
  font-weight: 800;
  color: #fff;
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 12px;
}
.footer__brand span {
  font-family: var(--font-en);
  font-size: 0.65rem;
  color: var(--accent);
  letter-spacing: 0.08em;
}
.footer__desc {
  font-size: 0.875rem;
  line-height: 1.7;
  max-width: 320px;
  margin: 0;
}
.footer__col h3 {
  font-size: 1rem;
  color: #fff;
  margin-bottom: 16px;
}
.footer__col a {
  display: block;
  color: var(--text-dark-2);
  font-size: 0.875rem;
  padding: 5px 0;
  transition: color var(--transition), padding-left var(--transition);
}
.footer__col a:hover {
  color: var(--accent);
  padding-left: 4px;
}
.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8125rem;
  color: var(--text-dark-2);
  flex-wrap: wrap;
  gap: 8px;
}
.footer__links a {
  color: var(--text-dark-2);
  margin-left: 16px;
}
.footer__links a:hover { color: var(--accent); }

.offcanvas.mobilemenu {
  width: 320px !important;
  background: var(--bg);
}
.mobilemenu .offcanvas-header {
  padding: 20px;
  border-bottom: 1px solid var(--border);
}
.mobilemenu .offcanvas-title {
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--text);
}
.mobilemenu .btn-close {
  background: transparent;
  font-size: 1.2rem;
  line-height: 1;
  opacity: 0.7;
  box-shadow: none;
}
.mobilemenu__list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.mobilemenu__list a {
  display: block;
  padding: 14px 0;
  font-weight: 600;
  color: var(--text);
  border-bottom: 1px solid var(--border);
  font-size: 1rem;
}
.mobilemenu__list a:hover { color: var(--primary); }
.mobilemenu__list a.active { color: var(--primary); }
.mobilemenu__cta {
  width: 100%;
  margin-top: 20px;
}

@media (max-width: 991.98px) {
  .mainnav .container { min-height: 64px; gap: 16px; }
  .mainnav__menu,
  .mainnav__cta { display: none; }
  .mainnav__toggle { display: flex; }
  .topbar__notice { display: none; }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 24px; }
}

@media (max-width: 767.98px) {
  .article-card { padding: 28px 20px; }
  .article-main { padding: 32px 0 56px; }
  .cta-box { padding: 32px 24px; flex-direction: column; gap: 24px; }
  .cta-box__qr { width: 100%; }
  .cta-form__row { flex-direction: column; }
  .cta-form__row input,
  .cta-form__row .btn { width: 100%; }
  .article-foot { flex-direction: column; align-items: stretch; }
  .article-foot__back { text-align: center; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 12px; }
  .related-section, .cta-section, .faq-section { padding: 48px 0; }
  .footer { padding-top: 40px; }
}

@media (max-width: 575.98px) {
  .article-card { padding: 24px 16px; }
  .footer__grid { grid-template-columns: 1fr; }
  .footer__bottom { flex-direction: column; text-align: center; }
  .footer__links a { margin-left: 0; margin-right: 16px; }
  .btn-app { width: 100%; justify-content: center; }
  .cta-box__buttons { flex-direction: column; width: 100%; }
}

@media print {
  .topbar,
  .mainnav,
  .mobilemenu,
  .cta-section,
  .faq-section,
  .footer,
  .related-section,
  .article-foot,
  .section-head__link {
    display: none !important;
  }
  .article-card {
    border: 0;
    box-shadow: none;
    padding: 0;
  }
  .article-main { padding: 0; }
  body { background: #fff; }
  .article-body table { border-collapse: collapse; }
  .article-body img { box-shadow: none; }
}

/* roulang page: category2 */
:root {
  --primary: #E04B2A;
  --primary-dark: #C63A1D;
  --primary-light: rgba(224, 75, 42, 0.08);
  --secondary: #1D4E3F;
  --secondary-dark: #162A24;
  --accent: #F2A33C;
  --bg: #F7F4EE;
  --card-bg: #FFFFFF;
  --text: #262020;
  --text-muted: #5E5550;
  --text-weak: #8D8580;
  --border: #ECE3D8;
  --border-input: #D9CFC2;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-pill: 999px;
  --shadow-sm: 0 2px 10px rgba(40, 32, 26, 0.05);
  --shadow-hover: 0 16px 40px rgba(40, 32, 26, 0.12);
  --font-cn: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-en: "Inter", "Roboto", system-ui, sans-serif;
  --spacer-lg: 96px;
  --spacer-md: 56px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-cn);
  background: var(--bg);
  color: var(--text);
  font-size: 1rem;
  line-height: 1.8;
  letter-spacing: 0.02em;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 140ms ease, background 140ms ease, border-color 140ms ease, box-shadow 140ms ease, transform 140ms ease;
}

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

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

button {
  border: none;
  background: none;
  font-family: inherit;
  cursor: pointer;
}

input,
textarea {
  font-family: inherit;
  font-size: 1rem;
}

ul,
ol {
  list-style: none;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-pill);
  font-weight: 600;
  line-height: 1.2;
  padding: 12px 28px;
  border: 2px solid transparent;
  transition: transform 140ms ease, box-shadow 140ms ease, background 140ms ease, border-color 140ms ease;
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(224, 75, 42, 0.28);
}

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

.btn-outline-secondary:hover {
  background: rgba(29, 78, 63, 0.08);
  color: var(--secondary);
  border-color: var(--secondary);
}

.btn-light {
  background: #F7F4EE;
  color: var(--secondary);
  border-color: #F7F4EE;
}

.btn-light:hover {
  background: #fff;
  color: var(--secondary);
  border-color: #fff;
  transform: translateY(-2px);
}

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

/* Topbar */
.topbar {
  background: var(--secondary);
  color: #F4EFE8;
  font-size: 0.8125rem;
  line-height: 1.4;
  height: 38px;
}

.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  padding: 0 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.topbar__brand {
  font-weight: 600;
  color: #F4EFE8;
  white-space: nowrap;
}

.topbar__msg {
  color: #B8C9C2;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  text-align: center;
  padding: 0 16px;
}

.topbar__action {
  color: #F2A33C;
  font-weight: 600;
  white-space: nowrap;
  transition: color 140ms ease;
}

.topbar__action:hover {
  color: #fff;
}

/* Mainnav */
.mainnav {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: #fff;
  box-shadow: none;
  transition: box-shadow 140ms ease;
}

.mainnav.scrolled {
  box-shadow: var(--shadow-sm);
}

.mainnav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.mainnav__logo {
  font-size: 1.375rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: 0.01em;
  line-height: 1.2;
}

.mainnav__logo span {
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--primary);
  margin-left: 6px;
  letter-spacing: 0.08em;
}

.mainnav__menu {
  display: flex;
  gap: 8px;
  margin: 0;
}

.mainnav__menu li a {
  display: inline-block;
  padding: 8px 14px;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-muted);
  border-bottom: 4px solid transparent;
  border-radius: 0;
}

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

.mainnav__menu li a.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
  font-weight: 600;
}

.mainnav__cta {
  padding: 10px 24px;
  font-size: 0.9375rem;
}

.mainnav__toggle {
  display: none;
  width: 44px;
  height: 44px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.mainnav__toggle span {
  display: block;
  width: 24px;
  height: 2.5px;
  background: var(--primary);
  border-radius: 2px;
}

/* Offcanvas */
.offcanvas {
  --bs-offcanvas-width: 320px;
}

.offcanvas-header {
  border-bottom: 1px solid var(--border);
  padding: 20px 24px;
}

.offcanvas-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text);
}

.offcanvas-title span {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--primary);
  margin-left: 4px;
}

.btn-close {
  filter: none;
  opacity: 0.7;
}

.offcanvas-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.mobile-menu {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mobile-menu li a {
  display: block;
  padding: 12px 16px;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text);
  border-radius: 12px;
  transition: background 140ms ease, color 140ms ease;
}

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

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

.mobile-menu__cta {
  width: 100%;
  margin-top: auto;
}

/* Hero */
.hero {
  position: relative;
  background: var(--bg);
  padding: 64px 0 56px;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center;
  opacity: 0.18;
}

.hero__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(247, 244, 238, 0.6), rgba(247, 244, 238, 0.95));
}

.hero__inner {
  position: relative;
  z-index: 2;
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.hero__lead {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 0.875rem;
  font-weight: 600;
  padding: 6px 18px;
  border-radius: var(--radius-pill);
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(2rem, 4vw + 1rem, 3.5rem);
  font-weight: 800;
  line-height: 1.2;
  color: var(--text);
  margin-bottom: 20px;
  letter-spacing: 0.01em;
}

.hero__subtitle {
  font-size: 1.0625rem;
  color: var(--text-muted);
  max-width: 640px;
  margin: 0 auto 32px;
  line-height: 1.75;
}

.hero__actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero__note {
  font-size: 0.8125rem;
  color: var(--text-weak);
  margin-top: 16px;
}

/* Knowledge Section */
.knowledge-section {
  padding: var(--spacer-lg) 0;
}

.knowledge-section .section-head {
  text-align: center;
  margin-bottom: 48px;
}

.section-head .tag {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 16px;
}

.section-head h2 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 12px;
  line-height: 1.3;
}

.section-head p {
  color: var(--text-muted);
  font-size: 0.9375rem;
  max-width: 560px;
  margin: 0 auto;
}

.knowledge-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.knowledge-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: transform 140ms ease, box-shadow 140ms ease;
}

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

.knowledge-card__media {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.knowledge-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 140ms ease;
}

.knowledge-card:hover .knowledge-card__media img {
  transform: scale(1.02);
}

.knowledge-card__tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--primary);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  backdrop-filter: blur(4px);
}

.knowledge-card__body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.knowledge-card__body h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
  line-height: 1.4;
}

.knowledge-card__body p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 16px;
  flex-grow: 1;
}

.knowledge-card__btm {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.knowledge-card__link {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--primary);
}

.knowledge-card__link:hover {
  color: var(--primary-dark);
}

/* Features */
.features-section {
  padding: var(--spacer-lg) 0;
  background: #fff;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 48px;
}

.feature-card {
  background: var(--bg);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  border: 1px solid var(--border);
  position: relative;
  overflow: hidden;
  transition: transform 140ms ease, box-shadow 140ms ease;
}

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

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--primary);
}

.feature-card__num {
  font-family: var(--font-en);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 0;
}

/* Scenarios */
.scenarios-section {
  padding: var(--spacer-lg) 0;
}

.scenarios-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 48px;
}

.scenario-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform 140ms ease, box-shadow 140ms ease;
}

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

.scenario-item__icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  font-weight: 800;
  margin: 0 auto 20px;
  font-family: var(--font-en);
}

.scenario-item h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
}

.scenario-item p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 0;
}

/* Steps */
.steps-section {
  padding: var(--spacer-lg) 0;
  background: var(--secondary-dark);
  color: #F4EFE8;
}

.steps-section .section-head h2 {
  color: #F4EFE8;
}

.steps-section .section-head p {
  color: #B8C9C2;
}

.steps-section .section-head .tag {
  background: rgba(242, 163, 60, 0.15);
  color: var(--accent);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.step-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  text-align: center;
  transition: background 140ms ease, transform 140ms ease;
}

.step-card:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-4px);
}

.step-card__badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--secondary-dark);
  font-weight: 800;
  font-size: 1.125rem;
  font-family: var(--font-en);
  margin-bottom: 16px;
}

.step-card h3 {
  font-size: 1rem;
  font-weight: 600;
  color: #F4EFE8;
  margin-bottom: 8px;
}

.step-card p {
  font-size: 0.8125rem;
  color: #B8C9C2;
  line-height: 1.6;
  margin-bottom: 0;
}

/* FAQ */
.faq-section {
  padding: var(--spacer-lg) 0;
}

.accordion {
  max-width: 820px;
  margin: 48px auto 0;
  --bs-accordion-border-color: var(--border);
  --bs-accordion-btn-focus-box-shadow: none;
  --bs-accordion-active-bg: transparent;
  --bs-accordion-active-color: var(--primary);
}

.accordion-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 16px;
}

.accordion-item:last-child {
  margin-bottom: 0;
}

.accordion-button {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  padding: 20px 28px;
  background: var(--card-bg);
  box-shadow: none;
  border-radius: var(--radius-lg);
  position: relative;
}

.accordion-button::after {
  background-image: none;
  content: '+';
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--primary);
  width: auto;
  height: auto;
  line-height: 1;
  transition: transform 140ms ease;
}

.accordion-button:not(.collapsed) {
  background: var(--card-bg);
  color: var(--text);
}

.accordion-button:not(.collapsed)::after {
  content: '−';
  transform: none;
}

.accordion-button:focus {
  box-shadow: none;
  border: none;
}

.accordion-body {
  padding: 0 28px 24px;
  color: var(--text-muted);
  font-size: 0.9375rem;
  line-height: 1.75;
  border-top: 1px solid var(--border);
  padding-top: 20px;
}

/* CTA */
.cta-section {
  padding: var(--spacer-lg) 0;
  background: var(--secondary-dark);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-3.webp');
  background-size: cover;
  background-position: center;
  opacity: 0.15;
}

.cta-section .container {
  position: relative;
  z-index: 2;
  text-align: center;
}

.cta-section h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 800;
  color: #F4EFE8;
  margin-bottom: 16px;
}

.cta-section p {
  color: #B8C9C2;
  font-size: 1rem;
  max-width: 580px;
  margin: 0 auto 32px;
}

.cta-section .btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--secondary-dark);
  font-size: 1.0625rem;
  padding: 16px 44px;
}

.cta-section .btn-primary:hover {
  background: #e0962f;
  border-color: #e0962f;
  color: var(--secondary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(242, 163, 60, 0.3);
}

.cta-section .btn-ghost {
  background: transparent;
  border: 2px solid rgba(244, 239, 232, 0.5);
  color: #F4EFE8;
  font-size: 1rem;
  padding: 16px 36px;
  margin-left: 16px;
}

.cta-section .btn-ghost:hover {
  background: rgba(244, 239, 232, 0.1);
  color: #F4EFE8;
  border-color: rgba(244, 239, 232, 0.8);
}

/* Footer */
.footer {
  background: var(--secondary-dark);
  color: #B8C9C2;
  padding: 64px 0 32px;
  font-size: 0.875rem;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}

.footer__brand {
  font-size: 1.375rem;
  font-weight: 800;
  color: #F4EFE8;
  display: block;
  margin-bottom: 12px;
}

.footer__brand span {
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  margin-left: 6px;
}

.footer__desc {
  font-size: 0.875rem;
  line-height: 1.75;
  color: #B8C9C2;
  max-width: 340px;
  margin-bottom: 0;
}

.footer__col h3 {
  font-size: 0.9375rem;
  font-weight: 600;
  color: #F4EFE8;
  margin-bottom: 16px;
}

.footer__col a {
  display: block;
  padding: 6px 0;
  font-size: 0.875rem;
  color: #B8C9C2;
  transition: color 140ms ease;
}

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

.footer__bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8125rem;
  color: #8D8580;
}

.footer__links a {
  color: #B8C9C2;
  margin-left: 16px;
}

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

/* Responsive */
@media (max-width: 991.98px) {
  .mainnav__menu,
  .mainnav__cta {
    display: none;
  }

  .mainnav__toggle {
    display: flex;
  }

  .topbar__msg {
    display: none;
  }

  .topbar__inner {
    padding: 0 16px;
  }

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

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

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

  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 767.98px) {
  :root {
    --spacer-lg: 56px;
    --spacer-md: 40px;
  }

  .hero {
    padding: 48px 0 40px;
  }

  .hero h1 {
    font-size: clamp(1.75rem, 6vw + 0.5rem, 2.5rem);
  }

  .hero__subtitle {
    font-size: 0.9375rem;
  }

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

  .hero__actions .btn {
    width: 100%;
  }

  .knowledge-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

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

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

  .steps-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer__bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .cta-section .btn {
    width: 100%;
    margin: 8px 0;
  }
}

@media (max-width: 575.98px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .mainnav .container {
    height: 64px;
  }

  .section-head h2 {
    font-size: 1.5rem;
  }

  .knowledge-card__body {
    padding: 20px;
  }

  .topbar {
    height: 36px;
  }

  .topbar__brand {
    font-size: 0.75rem;
  }

  .topbar__action {
    font-size: 0.75rem;
  }
}

@media print {
  .topbar,
  .mainnav,
  .footer,
  .cta-section,
  .hero__actions {
    display: none !important;
  }

  body {
    background: #fff;
  }

  .hero {
    background: #fff;
    padding: 20px 0;
  }

  .hero__bg {
    display: none;
  }

  .knowledge-card,
  .feature-card,
  .scenario-item,
  .step-card,
  .accordion-item {
    box-shadow: none;
    break-inside: avoid;
  }
}

/* roulang page: category3 */
:root {
        --primary: #E04B2A;
        --primary-dark: #C03A1D;
        --secondary: #1D4E3F;
        --secondary-dark: #162A24;
        --accent: #F2A33C;
        --bg: #F7F4EE;
        --card-bg: #FFFFFF;
        --text: #262020;
        --text-sub: #5E5550;
        --text-weak: #8D8580;
        --border: #ECE3D8;
        --dark-text: #F4EFE8;
        --dark-sub: #B8C9C2;
        --radius-lg: 16px;
        --radius-md: 12px;
        --radius-pill: 999px;
        --shadow-sm: 0 2px 10px rgba(40,32,26,0.05);
        --shadow-lg: 0 16px 40px rgba(40,32,26,0.12);
        --transition: 140ms ease;
        --font-cn: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        --font-num: "Inter", "Roboto", system-ui;
    }

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

    html {
        scroll-behavior: smooth;
    }

    body {
        margin: 0;
        font-family: var(--font-cn);
        font-size: 1rem;
        line-height: 1.8;
        letter-spacing: 0.02em;
        color: var(--text);
        background: var(--bg);
    }

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

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

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

    .container {
        max-width: 1200px;
    }

    /* 通用按钮 */
    .btn {
        border-radius: var(--radius-pill);
        padding: 10px 28px;
        font-weight: 700;
        font-family: var(--font-cn);
        border: 1px solid transparent;
        transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition), color var(--transition);
    }

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

    .btn-primary:hover,
    .btn-primary:focus {
        background: var(--primary-dark);
        border-color: var(--primary-dark);
        color: #fff;
        transform: translateY(-2px);
        box-shadow: 0 8px 24px rgba(224, 75, 42, 0.24);
    }

    .btn-outline-light {
        background: transparent;
        border-color: rgba(244, 239, 232, 0.6);
        color: #F4EFE8;
    }

    .btn-outline-light:hover,
    .btn-outline-light:focus {
        background: rgba(244, 239, 232, 0.12);
        border-color: #F4EFE8;
        color: #fff;
        transform: translateY(-2px);
    }

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

    .btn-outline-secondary:hover,
    .btn-outline-secondary:focus {
        background: rgba(29, 78, 63, 0.08);
        border-color: var(--secondary);
        color: var(--secondary);
        transform: translateY(-2px);
    }

    .btn-lg {
        padding: 14px 36px;
        font-size: 1rem;
        min-height: 52px;
    }

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

    /* 顶部信息条 */
    .topbar {
        background: var(--secondary);
        color: #EFE8DE;
        font-size: 0.8125rem;
        height: 38px;
        display: flex;
        align-items: center;
    }

    .topbar .container {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
    }

    .topbar__brand {
        color: var(--dark-text);
        font-weight: 700;
        letter-spacing: 0.08em;
        white-space: nowrap;
    }

    .topbar__notice {
        color: var(--dark-sub);
        overflow: hidden;
        white-space: nowrap;
        text-overflow: ellipsis;
        text-align: center;
    }

    .topbar__action {
        color: var(--accent);
        font-weight: 600;
        white-space: nowrap;
        transition: color var(--transition);
    }

    .topbar__action:hover {
        color: #fff;
    }

    /* 主导航 */
    .mainnav {
        position: sticky;
        top: 0;
        z-index: 1020;
        background: var(--card-bg);
        box-shadow: 0 1px 0 var(--border);
        transition: box-shadow var(--transition);
    }

    .mainnav.is-scrolled {
        box-shadow: var(--shadow-sm);
    }

    .mainnav .container {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 24px;
        min-height: 76px;
    }

    .mainnav__logo {
        font-size: 1.5rem;
        font-weight: 800;
        color: var(--secondary-dark);
        text-decoration: none;
        letter-spacing: 0.02em;
        display: inline-flex;
        align-items: baseline;
        gap: 8px;
        white-space: nowrap;
    }

    .mainnav__logo span {
        font-size: 0.875rem;
        font-weight: 600;
        color: var(--primary);
        letter-spacing: 0.2em;
    }

    .mainnav__toggle {
        display: none;
        width: 44px;
        height: 44px;
        border: 0;
        background: transparent;
        padding: 10px 8px;
        flex-direction: column;
        justify-content: space-between;
        border-radius: 8px;
        cursor: pointer;
    }

    .mainnav__toggle span {
        display: block;
        width: 100%;
        height: 3px;
        border-radius: 3px;
        background: var(--primary);
    }

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

    .mainnav__menu a {
        display: block;
        padding: 12px 16px;
        font-weight: 600;
        color: var(--text-sub);
        text-decoration: none;
        border-bottom: 4px solid transparent;
        border-radius: 4px 4px 0 0;
        transition: color var(--transition), border-color var(--transition), background var(--transition);
    }

    .mainnav__menu a:hover {
        color: var(--primary);
        background: rgba(224, 75, 42, 0.04);
    }

    .mainnav__menu a.active {
        color: var(--primary);
        border-bottom-color: var(--primary);
    }

    .mainnav__cta {
        white-space: nowrap;
    }

    /* 移动端 offcanvas 菜单 */
    .mobile-menu .offcanvas-header {
        border-bottom: 1px solid var(--border);
    }

    .mobile-menu .offcanvas-title {
        font-weight: 800;
        color: var(--secondary-dark);
    }

    .mobile-menu .offcanvas-title span {
        color: var(--primary);
    }

    .mobile-menu .btn-close {
        filter: none;
        opacity: 0.7;
    }

    .mobile-menu__link {
        display: block;
        padding: 14px 16px;
        font-size: 1rem;
        font-weight: 600;
        color: var(--text-sub);
        border-radius: 8px;
        margin-bottom: 4px;
        transition: background var(--transition), color var(--transition);
    }

    .mobile-menu__link:hover,
    .mobile-menu__link.active {
        background: rgba(224, 75, 42, 0.06);
        color: var(--primary);
    }

    /* 板块标题 */
    .section-head {
        text-align: center;
        max-width: 680px;
        margin: 0 auto 48px;
    }

    .section-head h2 {
        font-size: 2rem;
        font-weight: 800;
        color: var(--secondary-dark);
        margin-bottom: 8px;
        letter-spacing: 0.01em;
    }

    .section-head p {
        color: var(--text-sub);
        margin: 0;
        font-size: 0.9375rem;
    }

    /* ===== 社区横幅 Hero ===== */
    .community-hero {
        position: relative;
        min-height: 540px;
        display: flex;
        align-items: center;
        text-align: center;
        color: var(--dark-text);
        overflow: hidden;
        background-color: var(--secondary-dark);
    }

    .community-hero__bg {
        position: absolute;
        inset: 0;
        background-image: url('/assets/images/backpic/back-2.webp');
        background-size: cover;
        background-position: center;
    }

    .community-hero__overlay {
        position: absolute;
        inset: 0;
        background: linear-gradient(160deg, rgba(22, 42, 36, 0.88) 0%, rgba(22, 42, 36, 0.7) 100%);
    }

    .community-hero__content {
        position: relative;
        z-index: 2;
        padding: 96px 0;
        width: 100%;
    }

    .community-hero__tag {
        display: inline-block;
        background: rgba(242, 163, 60, 0.16);
        color: var(--accent);
        border: 1px solid rgba(242, 163, 60, 0.35);
        font-size: 0.8125rem;
        font-weight: 600;
        padding: 6px 18px;
        border-radius: var(--radius-pill);
        margin-bottom: 20px;
        letter-spacing: 0.08em;
    }

    .community-hero h1 {
        font-size: clamp(2rem, 4vw + 1rem, 3.375rem);
        font-weight: 800;
        line-height: 1.25;
        color: var(--dark-text);
        max-width: 860px;
        margin: 0 auto 20px;
    }

    .community-hero__lead {
        font-size: 1.125rem;
        color: var(--dark-sub);
        margin: 0 0 32px;
    }

    .community-hero__actions {
        display: flex;
        gap: 14px;
        justify-content: center;
        flex-wrap: wrap;
    }

    .community-hero__meta {
        margin-top: 28px;
        font-size: 0.875rem;
        color: var(--dark-sub);
        letter-spacing: 0.04em;
    }

    /* ===== 分类导语条 ===== */
    .cat-intro-bar {
        background: rgba(242, 163, 60, 0.08);
        border-bottom: 1px solid rgba(224, 75, 42, 0.14);
        font-size: 0.875rem;
        color: var(--text-sub);
        padding: 14px 0;
        text-align: center;
    }

    .cat-intro-bar .container {
        max-width: 900px;
    }

    /* ===== 数据统计 ===== */
    .stats-section {
        padding: 64px 0;
        border-bottom: 1px solid var(--border);
    }

    .stats-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
    }

    .stat-item {
        text-align: center;
        padding: 28px 16px;
        background: var(--card-bg);
        border: 1px solid var(--border);
        border-radius: var(--radius-lg);
        transition: transform var(--transition), box-shadow var(--transition);
    }

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

    .stat-item__num {
        display: block;
        font-family: var(--font-num);
        font-size: 2.125rem;
        font-weight: 800;
        color: var(--primary);
        line-height: 1.2;
    }

    .stat-item__label {
        color: var(--text-sub);
        font-size: 0.875rem;
        margin-top: 6px;
        display: block;
    }

    /* ===== 热门话题卡片 ===== */
    .topics-section {
        padding: 96px 0;
    }

    .topic-card {
        background: var(--card-bg);
        border: 1px solid var(--border);
        border-radius: var(--radius-lg);
        overflow: hidden;
        height: 100%;
        display: flex;
        flex-direction: column;
        transition: transform var(--transition), box-shadow var(--transition);
    }

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

    .topic-card__media {
        aspect-ratio: 16 / 9;
        overflow: hidden;
        background: #EFE8DE;
    }

    .topic-card__media img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform var(--transition);
    }

    .topic-card:hover .topic-card__media img {
        transform: scale(1.02);
    }

    .topic-card__body {
        padding: 22px 20px 20px;
        display: flex;
        flex-direction: column;
        gap: 10px;
        flex: 1;
    }

    .topic-card__tag {
        display: inline-block;
        align-self: flex-start;
        background: rgba(224, 75, 42, 0.08);
        color: var(--primary);
        font-size: 0.75rem;
        font-weight: 700;
        padding: 4px 12px;
        border-radius: 6px;
        line-height: 1.4;
    }

    .topic-card__title {
        font-size: 1.125rem;
        font-weight: 700;
        color: var(--text);
        line-height: 1.45;
        margin: 0;
    }

    .topic-card__desc {
        color: var(--text-sub);
        font-size: 0.875rem;
        line-height: 1.7;
        margin: 0;
    }

    .topic-card__meta {
        display: flex;
        align-items: center;
        justify-content: space-between;
        margin-top: auto;
        padding-top: 14px;
        border-top: 1px solid var(--border);
        font-size: 0.8125rem;
        color: var(--text-weak);
    }

    .topic-card__meta .hot {
        color: var(--primary);
        font-weight: 600;
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }

    /* ===== 社区特色 ===== */
    .feature-section {
        padding: 96px 0;
        background: var(--card-bg);
        border-top: 1px solid var(--border);
        border-bottom: 1px solid var(--border);
    }

    .feature-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 64px;
        align-items: center;
    }

    .feature-visual {
        position: relative;
    }

    .feature-visual img {
        width: 100%;
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-lg);
    }

    .feature-visual__badge {
        position: absolute;
        bottom: 20px;
        left: 20px;
        background: var(--accent);
        color: var(--secondary-dark);
        font-weight: 700;
        font-size: 0.8125rem;
        padding: 8px 18px;
        border-radius: var(--radius-pill);
        box-shadow: var(--shadow-sm);
    }

    .feature-list {
        display: flex;
        flex-direction: column;
        gap: 28px;
    }

    .feature-item {
        display: flex;
        gap: 16px;
        align-items: flex-start;
    }

    .feature-item__icon {
        width: 48px;
        height: 48px;
        border-radius: var(--radius-md);
        background: rgba(224, 75, 42, 0.08);
        color: var(--primary);
        display: flex;
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
    }

    .feature-item h3 {
        font-size: 1.125rem;
        font-weight: 700;
        margin: 0 0 4px;
        color: var(--text);
    }

    .feature-item p {
        color: var(--text-sub);
        font-size: 0.875rem;
        margin: 0;
        max-width: 420px;
        line-height: 1.7;
    }

    /* ===== 活动预告 ===== */
    .event-section {
        padding: 96px 0;
    }

    .event-card {
        border-radius: var(--radius-lg);
        overflow: hidden;
        border: 1px solid var(--border);
        background: var(--card-bg);
        height: 100%;
        display: flex;
        flex-direction: column;
        transition: transform var(--transition), box-shadow var(--transition);
    }

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

    .event-card__media {
        position: relative;
        aspect-ratio: 16 / 9;
        overflow: hidden;
        background: #EFE8DE;
    }

    .event-card__media img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform var(--transition);
    }

    .event-card:hover .event-card__media img {
        transform: scale(1.02);
    }

    .event-badge {
        position: absolute;
        top: 14px;
        left: 14px;
        background: var(--accent);
        color: var(--secondary-dark);
        font-size: 0.75rem;
        font-weight: 700;
        padding: 5px 14px;
        border-radius: var(--radius-pill);
        box-shadow: var(--shadow-sm);
        line-height: 1.4;
    }

    .event-card__body {
        padding: 20px 20px 22px;
        display: flex;
        flex-direction: column;
        gap: 8px;
        flex: 1;
    }

    .event-card__body h3 {
        font-size: 1.125rem;
        font-weight: 700;
        margin: 0;
        color: var(--text);
        line-height: 1.45;
    }

    .event-card__body p {
        color: var(--text-sub);
        font-size: 0.875rem;
        margin: 0;
        line-height: 1.7;
    }

    .event-card__meta {
        margin-top: auto;
        padding-top: 12px;
        border-top: 1px solid var(--border);
        font-size: 0.8125rem;
        color: var(--text-weak);
        display: flex;
        justify-content: space-between;
    }

    .event-card__link {
        color: var(--primary);
        font-weight: 600;
    }

    .event-card__link:hover {
        color: var(--primary-dark);
    }

    /* ===== FAQ ===== */
    .faq-section {
        padding: 96px 0;
        background: var(--card-bg);
        border-top: 1px solid var(--border);
    }

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

    .accordion-item {
        background: var(--card-bg);
        border: 1px solid var(--border);
        border-radius: var(--radius-lg);
        overflow: hidden;
        margin-bottom: 16px;
        position: relative;
        transition: box-shadow var(--transition);
    }

    .accordion-item:has(.accordion-button:not(.collapsed)) {
        border-left: 4px solid var(--primary);
        box-shadow: var(--shadow-sm);
    }

    .accordion-button {
        font-weight: 600;
        font-family: var(--font-cn);
        color: var(--text);
        background: transparent;
        box-shadow: none;
        padding: 20px 24px;
        font-size: 1rem;
        display: flex;
        align-items: center;
        gap: 12px;
    }

    .accordion-button:not(.collapsed) {
        color: var(--primary);
        background: transparent;
        box-shadow: none;
    }

    .accordion-button:focus {
        box-shadow: 0 0 0 3px rgba(224, 75, 42, 0.18);
        border-color: transparent;
    }

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

    .accordion-icon {
        position: relative;
        width: 20px;
        height: 20px;
        flex-shrink: 0;
        margin-left: auto;
    }

    .accordion-icon::before,
    .accordion-icon::after {
        content: "";
        position: absolute;
        background: var(--primary);
        border-radius: 2px;
        transition: transform var(--transition), opacity var(--transition);
    }

    .accordion-icon::before {
        left: 2px;
        right: 2px;
        top: 9px;
        height: 2px;
    }

    .accordion-icon::after {
        top: 2px;
        bottom: 2px;
        left: 9px;
        width: 2px;
    }

    .accordion-button:not(.collapsed) .accordion-icon::after {
        transform: scaleY(0);
        opacity: 0;
    }

    .accordion-body {
        padding: 0 24px 24px;
        color: var(--text-sub);
        line-height: 1.8;
        font-size: 0.9375rem;
    }

    /* ===== CTA 下载 ===== */
    .download-cta {
        position: relative;
        padding: 96px 0;
        background-color: var(--secondary-dark);
        background-image: url('/assets/images/backpic/back-3.webp');
        background-size: cover;
        background-position: center;
    }

    .download-cta::before {
        content: "";
        position: absolute;
        inset: 0;
        background: rgba(22, 42, 36, 0.82);
    }

    .download-cta .container {
        position: relative;
        z-index: 2;
        text-align: center;
        color: var(--dark-text);
    }

    .download-cta h2 {
        color: var(--dark-text);
        font-size: clamp(1.75rem, 3vw, 2.5rem);
        font-weight: 800;
        margin-bottom: 12px;
    }

    .download-cta__desc {
        color: var(--dark-sub);
        max-width: 640px;
        margin: 0 auto 36px;
        font-size: 1rem;
        line-height: 1.8;
    }

    .download-cta__buttons {
        display: flex;
        gap: 16px;
        justify-content: center;
        flex-wrap: wrap;
        margin-bottom: 36px;
    }

    .store-btn {
        display: inline-flex;
        align-items: center;
        gap: 12px;
        background: var(--bg);
        color: var(--secondary-dark);
        border-radius: var(--radius-pill);
        padding: 10px 28px;
        min-height: 56px;
        text-decoration: none;
        border: 1px solid transparent;
        transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
    }

    .store-btn:hover {
        transform: translateY(-3px);
        box-shadow: 0 12px 30px rgba(0, 0, 0, 0.22);
        color: var(--secondary-dark);
        background: #fff;
    }

    .store-btn--gold {
        background: var(--accent);
        color: var(--secondary-dark);
    }

    .store-btn--gold:hover {
        background: #FFB757;
        color: var(--secondary-dark);
    }

    .store-btn__icon {
        font-size: 1.75rem;
        line-height: 1;
    }

    .store-btn__text {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        line-height: 1.2;
    }

    .store-btn__small {
        font-size: 0.75rem;
        font-weight: 500;
        opacity: 0.85;
    }

    .store-btn__strong {
        font-size: 1rem;
        font-weight: 800;
    }

    .download-cta__form {
        max-width: 520px;
        margin: 0 auto;
        display: flex;
        gap: 12px;
        flex-wrap: wrap;
        justify-content: center;
    }

    .download-cta__form input {
        flex: 1;
        min-width: 240px;
        height: 48px;
        border-radius: var(--radius-pill);
        border: 1px solid rgba(244, 239, 232, 0.4);
        background: rgba(244, 239, 232, 0.12);
        color: var(--dark-text);
        padding: 0 20px;
        font-size: 0.9375rem;
        outline: none;
        transition: border-color var(--transition), background var(--transition), box-shadow var(--transition);
    }

    .download-cta__form input::placeholder {
        color: rgba(184, 201, 194, 0.8);
    }

    .download-cta__form input:focus {
        border-color: var(--primary);
        background: rgba(244, 239, 232, 0.18);
        box-shadow: 0 0 0 3px rgba(224, 75, 42, 0.25);
    }

    .download-cta__form .btn-primary {
        height: 48px;
        padding: 0 32px;
        display: inline-flex;
        align-items: center;
    }

    .download-cta__tip {
        margin-top: 16px;
        font-size: 0.8125rem;
        color: var(--dark-sub);
    }

    /* ===== 页脚 ===== */
    .footer {
        background: var(--secondary-dark);
        color: var(--dark-sub);
        padding: 64px 0 0;
    }

    .footer__grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr;
        gap: 48px;
        padding-bottom: 40px;
    }

    .footer__brand {
        font-size: 1.375rem;
        font-weight: 800;
        color: var(--dark-text);
        letter-spacing: 0.02em;
    }

    .footer__brand span {
        color: var(--primary);
        font-size: 0.875rem;
        font-weight: 600;
        letter-spacing: 0.14em;
        margin-left: 4px;
    }

    .footer__desc {
        margin-top: 12px;
        max-width: 380px;
        line-height: 1.8;
        font-size: 0.875rem;
    }

    .footer__col h3 {
        color: var(--dark-text);
        font-size: 1rem;
        font-weight: 700;
        margin-bottom: 16px;
    }

    .footer__col a {
        display: block;
        color: var(--dark-sub);
        text-decoration: none;
        padding: 6px 0;
        font-size: 0.875rem;
        transition: color var(--transition);
    }

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

    .footer__bottom {
        border-top: 1px solid rgba(184, 201, 194, 0.16);
        padding: 20px 0;
        display: flex;
        justify-content: space-between;
        gap: 16px;
        flex-wrap: wrap;
        font-size: 0.8125rem;
    }

    .footer__links a {
        color: var(--dark-sub);
        text-decoration: none;
        margin-left: 16px;
    }

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

    /* ===== 响应式 ===== */
    @media (max-width: 991.98px) {
        .mainnav__menu,
        .mainnav__cta {
            display: none;
        }

        .mainnav__toggle {
            display: flex;
        }

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

        .feature-grid {
            grid-template-columns: 1fr;
            gap: 40px;
        }
    }

    @media (max-width: 767.98px) {
        .topbar__notice {
            display: none;
        }

        .community-hero {
            min-height: 480px;
        }

        .community-hero__content {
            padding: 64px 0;
        }

        .community-hero h1 {
            font-size: clamp(1.75rem, 5vw, 2.5rem);
        }

        .topics-section,
        .feature-section,
        .event-section,
        .faq-section,
        .download-cta {
            padding: 56px 0;
        }

        .stats-section {
            padding: 40px 0;
        }

        .section-head {
            margin-bottom: 32px;
        }

        .section-head h2 {
            font-size: 1.625rem;
        }

        .footer__grid {
            grid-template-columns: 1fr;
            gap: 32px;
            padding-bottom: 24px;
        }

        .footer__bottom {
            flex-direction: column;
            text-align: center;
        }

        .footer__links a {
            margin: 0 8px;
        }
    }

    @media (max-width: 575.98px) {
        .stats-grid {
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }

        .stat-item {
            padding: 20px 12px;
        }

        .stat-item__num {
            font-size: 1.625rem;
        }

        .download-cta__form {
            flex-direction: column;
        }

        .download-cta__form input {
            min-width: 100%;
        }

        .download-cta__buttons {
            flex-direction: column;
            align-items: stretch;
        }

        .store-btn {
            justify-content: center;
        }

        .community-hero__actions .btn {
            width: 100%;
        }
    }

    @media print {
        .topbar,
        .mainnav,
        .download-cta,
        .footer {
            display: none;
        }

        .community-hero {
            min-height: auto;
            padding: 24px 0;
        }
    }