/* roulang page: index */
:root {
  --primary: #2456E6;
  --primary-hover: #1B42B8;
  --primary-soft: #EDF3FF;
  --bg-page: #F6F9FE;
  --bg-card: #FFFFFF;
  --text-main: #182F45;
  --text-sub: #57708C;
  --text-weak: #8BA1B8;
  --line: #E5EDF5;
  --line-deep: #DDE7F2;
  --ok: #16A288;
  --warn: #F2933F;
  --radius: 8px;
  --radius-lg: 16px;
  --shadow: 0 8px 24px rgba(31,45,86,.06);
  --shadow-hover: 0 14px 32px rgba(31,45,86,.10);
  --dur: .18s;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --space-1: 4px; --space-2: 8px; --space-3: 16px; --space-4: 24px; --space-5: 32px; --space-6: 48px; --space-7: 64px; --space-8: 96px; --space-9: 128px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg-page);
  color: var(--text-main);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; height: auto; }
a { color: var(--primary); text-decoration: none; transition: color var(--dur) ease; }
a:hover { color: var(--primary-hover); }
ul, ol { list-style: none; }
button, input { font-family: inherit; }
:focus-visible { outline: 2px dashed var(--primary); outline-offset: 3px; }
.container-site { max-width: 1280px; margin: 0 auto; padding: 0 24px; }

/* 顶部信息条 */
.topbar {
  background: #fff;
  border-bottom: 1px solid var(--line);
  min-height: 36px;
  display: flex;
  align-items: center;
  font-size: 13px;
  color: var(--text-sub);
}
.topbar .container-site {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}
.topbar__status { display: flex; align-items: center; gap: 8px; }
.topbar__dot { width: 8px; height: 8px; border-radius: 50%; background: var(--ok); display: inline-block; }
.topbar__links a { color: var(--text-sub); margin-left: 16px; }
.topbar__links a:hover { color: var(--primary); }

/* 主导航 */
.site-header {
  background: #fff;
  border-bottom: 1px solid var(--line);
  min-height: 72px;
  display: flex;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 60;
}
.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand__mark {
  width: 40px; height: 40px;
  background: var(--primary-soft);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
}
.brand__name { font-size: 20px; font-weight: 700; color: var(--text-main); line-height: 1.3; white-space: nowrap; }
.brand__domain { display: block; font-size: 12px; color: var(--text-weak); font-weight: 400; line-height: 1.2; }

.nav-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #F1F5FA;
  padding: 5px;
  border-radius: 999px;
  overflow-x: auto;
  scrollbar-width: none;
}
.nav-chip::-webkit-scrollbar { display: none; }
.nav-chip a {
  display: inline-flex;
  align-items: center;
  height: 34px;
  padding: 0 20px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: #465A72;
  white-space: nowrap;
  transition: background var(--dur), color var(--dur);
}
.nav-chip a:hover { background: #E8EFFA; color: var(--text-main); }
.nav-chip a.is-active { background: var(--primary-soft); color: var(--primary); font-weight: 600; }
.nav-chip a.is-active::after { content: ""; width: 4px; height: 4px; border-radius: 50%; background: var(--primary); margin-left: 6px; }

.nav-cta {
  flex-shrink: 0;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 24px;
  border-radius: var(--radius);
  border: 0;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--dur), box-shadow var(--dur), transform var(--dur), border var(--dur);
}
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 6px 14px rgba(36,86,230,.22); }
.btn-primary:hover { background: var(--primary-hover); color: #fff; transform: translateY(-1px); box-shadow: 0 10px 20px rgba(36,86,230,.26); }
.btn-ghost { background: #fff; border: 1px solid var(--line-deep); color: var(--primary); }
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-soft); transform: translateY(-1px); }
.btn-sm { height: 38px; padding: 0 18px; font-size: 14px; }

/* Hero */
.hero {
  padding: 72px 0 60px;
  position: relative;
}
.hero-bg {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  opacity: .10;
  z-index: 0;
  border-radius: 0;
}
.hero .container-site { position: relative; z-index: 2; }
.hero-card {
  background: #fff;
  border-radius: 24px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  overflow: hidden;
  display: flex;
  min-height: 460px;
}
.hero__text { padding: 56px 48px; flex: 0 0 58%; }
.hero__media { flex: 1; position: relative; background: var(--primary-soft); min-height: 340px; overflow: hidden; }
.hero__media img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; }
.hero__kicker {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--primary-soft); color: var(--primary);
  border-radius: 999px; padding: 5px 14px;
  font-size: 13px; font-weight: 600; margin-bottom: 20px;
}
.hero h1 {
  font-size: clamp(34px, 4.8vw, 48px);
  font-weight: 700;
  letter-spacing: .5px;
  line-height: 1.25;
  color: var(--text-main);
  margin-bottom: 20px;
}
.hero__desc {
  font-size: 16px;
  color: var(--text-sub);
  max-width: 580px;
  margin-bottom: 28px;
  line-height: 1.8;
}
.hero__actions { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.hero__link { font-size: 14px; color: var(--text-sub); border-bottom: 1px solid var(--line-deep); padding-bottom: 2px; }
.hero__link:hover { color: var(--primary); border-color: var(--primary); }
.hero__float {
  position: absolute;
  left: 24px; right: 24px; bottom: 24px;
  background: rgba(255,255,255,.94);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: 16px 20px;
  display: flex; gap: 20px; align-items: center;
  backdrop-filter: none;
}
.hero__float-item { flex: 1; }
.hero__float-label { font-size: 12px; color: var(--text-weak); }
.hero__float-num { font-size: 22px; font-weight: 700; color: var(--text-main); }

/* 状态条 */
.status-strip {
  background: var(--primary-soft);
  border-radius: 14px;
  padding: 14px 20px;
  margin: 24px 0 0;
  display: flex;
  align-items: center;
  gap: 14px;
  border: 1px solid #D6E4FF;
}
.status-strip .status-icon {
  width: 36px; height: 36px; border-radius: 50%;
  background: #fff; display: flex; align-items: center; justify-content: center;
  color: var(--primary); flex-shrink: 0;
}
.status-strip p { font-size: 14px; color: var(--text-sub); }
.status-strip strong { color: var(--text-main); }

/* 通用模块 */
.module-section { padding: 96px 0; }
.module-head { margin-bottom: 48px; max-width: 680px; }
.module-head .eyebrow {
  display: inline-block; font-size: 13px; font-weight: 600; color: var(--primary);
  background: var(--primary-soft); border-radius: 6px; padding: 4px 12px; margin-bottom: 12px;
}
.module-head h2 {
  font-size: clamp(26px, 3vw, 34px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--text-main);
  margin-bottom: 12px;
}
.module-head p { font-size: 15px; color: var(--text-sub); }
.module-more { margin-top: 16px; font-size: 14px; }

/* CMS动态区 */
.js-section { background: #fff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.cms-layout { display: flex; gap: 28px; align-items: stretch; }
.cms-main-col { flex: 2; min-width: 0; }
.cms-side-col { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 24px; }
.cms-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: box-shadow var(--dur), transform var(--dur), border-color var(--dur);
  height: 100%;
  display: flex;
  flex-direction: column;
}
.cms-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); border-color: var(--line-deep); }
.cms-card__meta { display: flex; gap: 12px; align-items: center; margin-bottom: 12px; font-size: 12px; color: var(--text-weak); flex-wrap: wrap; }
.cms-card__cat {
  background: var(--primary-soft);
  color: var(--primary);
  border-radius: 4px;
  padding: 2px 10px;
  font-weight: 600;
  font-size: 12px;
}
.cms-card__title { font-size: 18px; font-weight: 600; line-height: 1.5; margin-bottom: 10px; color: var(--text-main); }
.cms-card__summary { font-size: 14px; color: var(--text-sub); line-height: 1.7; margin-bottom: 18px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.cms-card__more { margin-top: auto; display: inline-flex; align-items: center; gap: 4px; font-size: 14px; font-weight: 600; color: var(--primary); }
.cms-card__more svg { transition: transform var(--dur); }
.cms-card:hover .cms-card__more svg { transform: translateX(4px); }
.cms-side-item { padding: 20px; }
.cms-side-item .cms-card__title { font-size: 16px; }

.cms-empty {
  background: #fff;
  border: 2px dashed var(--line-deep);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 64px 32px;
  text-align: center;
  width: 100%;
}
.cms-empty .empty-icon {
  width: 52px; height: 52px;
  background: var(--primary-soft);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--primary); margin-bottom: 16px;
}
.cms-empty h3 { font-size: 16px; margin-bottom: 8px; color: var(--text-main); }
.cms-empty p { font-size: 14px; color: var(--text-weak); }

/* 功能卡片 2+1 */
.feat-section { background: var(--bg-page); }
.feat-grid { display: flex; gap: 24px; }
.feat-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 28px;
  transition: transform var(--dur), box-shadow var(--dur), border-color var(--dur);
}
.feat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); border-color: var(--line-deep); }
.feat-card__icon {
  width: 46px; height: 46px;
  border-radius: 12px;
  background: var(--primary-soft);
  color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
}
.feat-card h3 { font-size: 18px; font-weight: 600; color: var(--text-main); margin-bottom: 10px; }
.feat-card p { font-size: 14px; color: var(--text-sub); line-height: 1.75; }
.feat-list { margin-top: 16px; display: grid; gap: 8px; }
.feat-list li { position: relative; padding-left: 20px; font-size: 14px; color: var(--text-sub); }
.feat-list li::before { content: ''; position: absolute; left: 0; top: 9px; width: 6px; height: 6px; border-radius: 2px; background: var(--primary); }

.feat-card--wide { flex: 2; }
.feat-stack { flex: 1; display: flex; flex-direction: column; gap: 24px; }

/* 场景区 */
.scene-section { background: #fff; }
.scene-wrap { display: flex; gap: 56px; align-items: center; background: var(--bg-page); border: 1px solid var(--line); border-radius: 24px; padding: 40px; box-shadow: var(--shadow); }
.scene-text { flex: 1; }
.scene-media { flex: 1; min-width: 0; }
.scene-media .img-frame { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow); }
.scene-media img { width: 100%; height: 300px; object-fit: cover; }
.scene-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.scene-tags span { background: var(--primary-soft); border-radius: 999px; padding: 6px 14px; font-size: 13px; color: var(--primary); font-weight: 500; }
.scene-item { display: flex; gap: 14px; margin-top: 22px; }
.scene-item .num {
  width: 26px; height: 26px; flex-shrink: 0;
  background: var(--primary); color: #fff; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 600;
}
.scene-item h3 { font-size: 16px; font-weight: 600; }
.scene-item p { font-size: 14px; color: var(--text-sub); margin-top: 4px; }

/* 指南卡片区 */
.guide-section { background: var(--bg-page); }
.guide-grid { display: flex; gap: 24px; }
.guide-col { flex: 1; }
.guide-card {
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform var(--dur), box-shadow var(--dur), border-color var(--dur);
  height: 100%;
  display: flex;
  flex-direction: column;
}
.guide-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); border-color: var(--line-deep); }
.guide-card__img { width: 100%; height: 220px; object-fit: cover; }
.guide-card__body { padding: 24px; display: flex; flex-direction: column; flex: 1; }
.guide-card__tag { font-size: 12px; color: var(--primary); background: var(--primary-soft); display: inline-block; border-radius: 4px; padding: 3px 10px; align-self: flex-start; margin-bottom: 12px; font-weight: 600; }
.guide-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 8px; color: var(--text-main); }
.guide-card p { font-size: 14px; color: var(--text-sub); line-height: 1.7; margin-bottom: 16px; }
.guide-card__more { margin-top: auto; font-size: 14px; font-weight: 600; color: var(--primary); display: inline-flex; gap: 4px; }

/* 方案区 */
.plan-section { background: #fff; }
.plan-grid { display: flex; gap: 24px; align-items: stretch; }
.plan-card {
  flex: 1;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  transition: transform var(--dur), box-shadow var(--dur), border-color var(--dur);
}
.plan-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); border-color: var(--line-deep); }
.plan-card h3 { font-size: 18px; font-weight: 600; color: var(--text-main); margin-bottom: 8px; }
.plan-card .plan-sub { font-size: 13px; color: var(--text-weak); margin-bottom: 18px; }
.plan-card ul { margin: 16px 0 24px; display: grid; gap: 10px; }
.plan-card ul li { position: relative; padding-left: 24px; font-size: 14px; color: var(--text-sub); }
.plan-card ul li::before { content: ''; position: absolute; left: 2px; top: 8px; width: 12px; height: 6px; border-left: 2px solid var(--primary); border-bottom: 2px solid var(--primary); transform: rotate(-45deg); }
.plan-card .btn { margin-top: auto; }

/* FAQ */
.faq-section { background: var(--bg-page); }
.faq-list { max-width: 860px; margin: 0 auto; background: #fff; border-radius: 20px; border: 1px solid var(--line); box-shadow: var(--shadow); padding: 12px 32px; }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item:last-child { border-bottom: 0; }
.faq-item__q {
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding: 22px 4px;
  font-size: 15px; font-weight: 600; color: var(--text-main);
  cursor: pointer;
  background: none;
  border: none;
  width: 100%;
  text-align: left;
}
.faq-item__q:hover { color: var(--primary); }
.faq-item__q svg { width: 20px; height: 20px; flex-shrink: 0; stroke: var(--text-weak); transition: transform var(--dur); }
.faq-item.is-open .faq-item__q svg { transform: rotate(45deg); stroke: var(--primary); }
.faq-item__a { display: none; padding: 0 32px 22px 4px; font-size: 14px; line-height: 1.8; color: var(--text-sub); }

/* CTA */
.cta-section { padding: 80px 0; background: #fff; }
.cta-block {
  background: var(--primary-soft);
  border: 1px solid #D6E4FF;
  border-radius: 24px;
  padding: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.cta-block h2 { font-size: 24px; font-weight: 700; color: var(--text-main); margin-bottom: 8px; }
.cta-block p { color: var(--text-sub); font-size: 15px; max-width: 80%; }
.cta-block .actions { flex-shrink: 0; display: flex; gap: 12px; }

/* 页脚 */
.site-footer { background: #fff; border-top: 1px solid var(--line); padding: 64px 0 24px; font-size: 14px; }
.footer-grid { display: flex; gap: 40px; justify-content: space-between; flex-wrap: wrap; }
.footer-brand { flex: 2; min-width: 260px; }
.footer-brand .logo-brand { margin-bottom: 16px; }
.footer-logo { display: flex; align-items: center; gap: 8px; margin-bottom: 16px; }
.footer-logo .brand__mark { width: 36px; height: 36px; }
.footer-brand p { color: var(--text-sub); max-width: 420px; line-height: 1.8; font-size: 14px; margin-bottom: 16px; }
.footer-nav { flex: 1; min-width: 200px; }
.footer-nav h4 { font-size: 14px; font-weight: 600; margin-bottom: 14px; color: var(--text-main); }
.footer-nav ul li { margin-bottom: 10px; }
.footer-nav ul a { color: var(--text-sub); font-size: 14px; }
.footer-nav ul a:hover { color: var(--primary); }
.footer-bottom {
  border-top: 1px solid var(--line);
  margin-top: 48px;
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  color: var(--text-weak);
  font-size: 13px;
}
.footer-bottom a { color: var(--text-weak); }
.footer-bottom a:hover { color: var(--primary); }

/* 响应式 */
@media screen and (max-width: 1024px) {
  .hero-card { flex-direction: column; }
  .hero__text { flex: none; padding: 40px; }
  .hero__media { min-height: 320px; }
  .module-section { padding: 72px 0; }
  .nav-chip { order: 3; width: 100%; margin-top: 8px; justify-content: flex-start; }
  .nav-wrap { flex-wrap: wrap; padding: 12px 0; }
  .site-header { position: static; }
}

@media screen and (max-width: 820px) {
  .feat-grid { flex-direction: column; }
  .feat-stack { flex-direction: row; }
  .feat-stack .feat-card { flex: 1; }
  .scene-wrap { flex-direction: column; padding: 28px; gap: 32px; }
  .guide-grid { flex-direction: column; }
  .plan-grid { flex-wrap: wrap; }
  .plan-card { flex: 1 1 100%; }
  .cms-layout { flex-direction: column; }
  .cta-block { flex-direction: column; padding: 36px; align-items: flex-start; }
  .cta-block p { max-width: 100%; }
}

@media screen and (max-width: 600px) {
  .container-site { padding: 0 16px; }
  .brand__name { font-size: 18px; }
  .brand__domain { display: none; }
  .nav-wrap { flex-wrap: nowrap; flex-direction: column; align-items: stretch; }
  .nav-chip { width: 100%; }
  .nav-cta { position: fixed; bottom: 16px; right: 16px; z-index: 90; }
  .nav-cta .btn { box-shadow: var(--shadow-hover); }
  .hero { padding: 28px 0 32px; }
  .hero__text { padding: 28px 20px; }
  .hero__media { min-height: 220px; }
  .hero-card { border-radius: 18px; }
  .hero__media .hero__float { position: static; margin: 16px; border-radius: 12px; }
  .module-section { padding: 56px 0; }
  .module-head h2 { font-size: 26px; }
  .feat-stack { flex-direction: column; }
  .faq-list { padding: 12px 20px; }
  .faq-item__a { padding-right: 8px; }
  .scene-wrap { padding: 20px; }
  .scene-media img { height: 200px; }
  .footer-grid { flex-direction: column; gap: 32px; }
  .footer-bottom { justify-content: center; text-align: center; }
  .status-strip { font-size: 13px; padding: 12px 14px; }
}

@media screen and (max-width: 400px) {
  .brand__mark { width: 34px; height: 34px; }
  .brand__name { font-size: 16px; }
  .hero h1 { font-size: 30px; }
  .btn { padding: 0 18px; }
}

/* roulang page: article */
:root {
    --primary: #2456E6;
    --primary-hover: #1B42B8;
    --primary-soft: #EDF3FF;
    --page-bg: #F6F9FE;
    --card-bg: #FFFFFF;
    --text-title: #182F45;
    --text-body: #3D5268;
    --text-sub: #57708C;
    --text-weak: #8BA1B8;
    --line: #E5EDF5;
    --line-card: #EDF1F7;
    --accent: #16A288;
    --warning: #F2933F;
    --radius: 8px;
    --radius-card: 16px;
    --shadow-card: 0 8px 24px rgba(31, 45, 86, 0.06);
    --shadow-card-hover: 0 14px 32px rgba(31, 45, 86, 0.10);
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    --container-w: 1280px;
}

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

html {
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

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

h1, h2, h3, h4, h5, h6, p, ul, ol, figure, blockquote, dl, dd {
    margin: 0;
}

ul, ol {
    padding-left: 1.25rem;
}

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

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

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

button, input, textarea, select {
    font-family: inherit;
}

::selection {
    background: #DCE8FF;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 48px;
    padding: 0 22px;
    border: 1px solid transparent;
    border-radius: var(--radius);
    font-size: 15px;
    font-weight: 600;
    line-height: 1;
    cursor: pointer;
    white-space: nowrap;
    transition: all 150ms ease;
}

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

.btn-primary:hover {
    background: var(--primary-hover);
    color: #fff !important;
    transform: translateY(-1px);
}

.btn-outline {
    background: #fff;
    border-color: #D5E0EC;
    color: var(--primary) !important;
}

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

.btn-sm {
    height: 38px;
    padding: 0 18px;
    font-size: 14px;
}

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

.container-site {
    width: 100%;
    max-width: var(--container-w);
    margin: 0 auto;
    padding: 0 24px;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 60;
    background: #fff;
    border-bottom: 1px solid var(--line);
}

.site-header .nav-wrap {
    display: flex;
    align-items: center;
    gap: 18px;
    min-height: 72px;
}

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

.brand__mark {
    width: 36px;
    height: 36px;
    background: var(--primary-soft);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.brand__name {
    display: block;
    font-size: 19px;
    font-weight: 700;
    line-height: 1.25;
    color: var(--text-title);
    white-space: nowrap;
}

.brand__domain {
    display: block;
    font-size: 10px;
    line-height: 1.2;
    color: var(--text-weak);
}

.nav-chip {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex: 1;
    min-width: 0;
}

.nav-chip a {
    display: inline-flex;
    align-items: center;
    height: 36px;
    padding: 0 16px;
    border-radius: 999px;
    background: #F1F5FA;
    color: #465A72;
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
    transition: background 120ms ease, color 120ms ease;
}

.nav-chip a:hover {
    background: var(--primary-soft);
    color: var(--primary);
}

.nav-chip a.active {
    background: var(--primary-soft);
    color: var(--primary);
    font-weight: 600;
}

.nav-cta {
    flex-shrink: 0;
}

.article-main {
    padding: 40px 0 96px;
}

.article-main .row {
    max-width: 960px;
}

.article-main .columns {
    padding-left: 18px;
    padding-right: 18px;
}

.article-card {
    background: var(--card-bg);
    border: 1px solid var(--line-card);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    padding: 48px 52px;
    margin-bottom: 32px;
}

.article-card .breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    margin-bottom: 28px;
    font-size: 13px;
    color: var(--text-weak);
}

.article-card .breadcrumb a {
    color: var(--text-sub);
}

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

.article-card .breadcrumb .sep {
    color: var(--line);
}

.article-card .breadcrumb .current-title {
    max-width: 360px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--text-weak);
}

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

.article-title {
    font-size: clamp(28px, 3.4vw, 42px);
    line-height: 1.35;
    letter-spacing: 0.5px;
    color: var(--text-title);
    font-weight: 700;
    margin-bottom: 16px;
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px 24px;
    font-size: 13px;
    color: var(--text-sub);
}

.meta-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.badge {
    display: inline-flex;
    align-items: center;
    background: var(--primary-soft);
    color: var(--primary);
    border-radius: 4px;
    padding: 4px 10px;
    font-size: 12px;
    font-weight: 500;
    line-height: 1.4;
}

.article-content {
    padding-top: 28px;
    font-size: 16px;
    line-height: 1.9;
    color: var(--text-body);
}

.article-content > * + * {
    margin-top: 22px;
}

.article-content h2 {
    font-size: 26px;
    line-height: 1.5;
    font-weight: 700;
    color: var(--text-title);
    margin-top: 48px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--line);
}

.article-content h3 {
    font-size: 20px;
    line-height: 1.55;
    font-weight: 600;
    color: var(--text-title);
    margin-top: 32px;
}

.article-content h4 {
    font-size: 17px;
    font-weight: 600;
    color: var(--text-title);
    margin-top: 24px;
}

.article-content p {
    margin: 0;
}

.article-content a {
    color: var(--primary);
    text-decoration: none;
    border-bottom: 1px solid rgba(36, 86, 230, 0.3);
}

.article-content a:hover {
    color: var(--primary-hover);
    border-bottom-color: var(--primary-hover);
}

.article-content ul,
.article-content ol {
    padding-left: 1.3rem;
}

.article-content li + li {
    margin-top: 8px;
}

.article-content blockquote {
    background: #F8FBFF;
    border-left: 4px solid var(--primary);
    border-radius: 0 8px 8px 0;
    padding: 18px 22px;
    color: var(--text-sub);
    font-size: 15px;
}

.article-content img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(31, 45, 86, 0.06);
}

.article-content table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
    background: #fff;
}

.article-content th,
.article-content td {
    border: 1px solid var(--line);
    padding: 10px 14px;
    text-align: left;
    vertical-align: top;
}

.article-content th {
    background: var(--primary-soft);
    font-weight: 600;
    color: var(--text-title);
}

.article-content code {
    font-size: 0.9em;
    background: #F4F7FB;
    border: 1px solid var(--line);
    border-radius: 4px;
    padding: 2px 6px;
    color: var(--text-title);
}

.article-content pre {
    background: #F4F7FB;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 18px 20px;
    overflow-x: auto;
    font-size: 14px;
    line-height: 1.7;
}

.article-end {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding-top: 26px;
    margin-top: 40px;
    border-top: 1px solid var(--line);
}

.article-end-text {
    font-size: 14px;
    color: var(--text-weak);
}

.article-end-links {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.article-help-card {
    background: var(--primary-soft);
    border: 1px solid #DCE7FF;
    border-radius: var(--radius-card);
    padding: 28px;
}

.help-card-inner {
    display: flex;
    align-items: center;
    gap: 28px;
}

.help-figure {
    flex: 0 0 34%;
}

.help-figure img {
    border-radius: 12px;
    object-fit: cover;
    width: 100%;
    min-height: 140px;
}

.help-body {
    flex: 1;
    min-width: 0;
}

.help-body h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-title);
    margin-bottom: 8px;
}

.help-body p {
    font-size: 14px;
    line-height: 1.8;
    color: var(--text-sub);
    margin-bottom: 14px;
}

.article-empty {
    background: #fff;
    border: 1px solid var(--line-card);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    padding: 80px 32px;
    text-align: center;
}

.article-empty h1 {
    font-size: 30px;
    font-weight: 700;
    color: var(--text-title);
    margin-bottom: 10px;
}

.article-empty p {
    font-size: 15px;
    color: var(--text-sub);
    margin-bottom: 24px;
}

.site-footer {
    background: #fff;
    border-top: 1px solid var(--line);
    margin-top: 0;
}

.site-footer .footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 44px;
    padding: 56px 0 36px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.8;
    color: var(--text-sub);
    max-width: 420px;
}

.footer-nav h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-title);
    margin-bottom: 14px;
}

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

.footer-nav li + li {
    margin-top: 8px;
}

.footer-nav a {
    font-size: 14px;
    color: var(--text-sub);
}

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

.footer-bottom {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 10px;
    padding: 20px 0;
    border-top: 1px solid var(--line);
    font-size: 13px;
    color: var(--text-weak);
}

@media (max-width: 1023px) {
    .site-header .nav-wrap {
        flex-wrap: wrap;
        gap: 10px;
        padding: 10px 0;
        min-height: auto;
    }
    .brand {
        margin-right: auto;
    }
    .nav-cta {
        margin-left: auto;
    }
    .nav-chip {
        order: 3;
        width: 100%;
        justify-content: flex-start;
        overflow-x: auto;
        overflow-y: hidden;
        padding-bottom: 4px;
    }
    .nav-chip::-webkit-scrollbar {
        height: 4px;
    }
    .nav-chip::-webkit-scrollbar-thumb {
        background: var(--line);
        border-radius: 99px;
    }
    .article-card {
        padding: 36px 30px;
    }
    .article-main {
        padding: 28px 0 72px;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}

@media (max-width: 767px) {
    .container-site {
        padding: 0 16px;
    }
    .brand__name {
        font-size: 17px;
    }
    .brand__domain {
        display: none;
    }
    .article-main .columns {
        padding-left: 12px;
        padding-right: 12px;
    }
    .article-card {
        padding: 26px 20px;
        border-radius: 12px;
    }
    .article-title {
        font-size: 26px;
    }
    .article-meta {
        gap: 10px 16px;
    }
    .article-content {
        font-size: 15px;
    }
    .article-content h2 {
        font-size: 22px;
    }
    .article-content h3 {
        font-size: 18px;
    }
    .help-card-inner {
        flex-direction: column;
    }
    .help-figure {
        flex: 0 0 auto;
        width: 100%;
    }
    .help-figure img {
        max-height: 200px;
        width: 100%;
    }
    .article-end {
        align-items: flex-start;
        flex-direction: column;
    }
    .article-end-links {
        width: 100%;
    }
    .article-end-links .btn {
        flex: 1;
    }
    .article-empty {
        padding: 48px 20px;
    }
    .article-empty h1 {
        font-size: 26px;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
        padding: 40px 0 24px;
    }
    .footer-bottom {
        justify-content: center;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .site-header .nav-wrap {
        align-items: center;
    }
    .brand__mark {
        width: 32px;
        height: 32px;
    }
    .nav-cta .btn-sm {
        padding: 0 12px;
        font-size: 13px;
    }
    .nav-chip {
        gap: 10px;
    }
    .nav-chip a {
        padding: 0 14px;
        font-size: 13px;
    }
    .article-card .breadcrumb .current-title {
        max-width: 180px;
    }
    .article-meta {
        font-size: 12px;
    }
    .footer-bottom {
        font-size: 12px;
    }
}

/* roulang page: category1 */
:root{
  --primary:#2456E6;
  --primary-hover:#1B42B8;
  --primary-soft:#EDF3FF;
  --bg:#F6F9FE;
  --card:#FFFFFF;
  --text:#182F45;
  --text-sub:#57708C;
  --text-weak:#8BA1B8;
  --border:#E5EDF5;
  --border-deep:#DDE7F2;
  --ok:#16A288;
  --warn:#F2933F;
  --radius-sm:8px;
  --radius-md:16px;
  --radius-pill:999px;
  --shadow-card:0 8px 24px rgba(31,45,86,0.06);
  --shadow-card-hover:0 14px 32px rgba(31,45,86,0.10);
  --shadow-btn:0 8px 18px rgba(36,86,230,0.18);
  --container:1280px;
  --font-ui:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --ease:all .15s ease;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-ui);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--primary);text-decoration:none;transition:var(--ease);}
a:hover{color:var(--primary-hover);}
p{margin:0;}
ul,ol,dl{margin:0;padding:0;}
h1,h2,h3,h4,h5,h6{margin:0;line-height:1.3;font-weight:700;font-family:var(--font-ui);color:var(--text);}
.main-content{overflow:clip;}
.container-site{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
@media screen and (max-width:640px){
  .container-site{padding-left:16px;padding-right:16px;}
}
.row .columns{padding-left:10px;padding-right:10px;}
.section{padding:96px 0;}
.section-soft{background:#F0F5FD;}
.section-white{background:#fff;}
@media screen and (max-width:1023px){
  .section{padding:72px 0;}
}
@media screen and (max-width:639px){
  .section{padding:56px 0;}
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:6px;
  height:46px;
  padding:0 24px;
  border:1px solid transparent;
  border-radius:var(--radius-sm);
  background:var(--primary);
  color:#fff;
  font-family:var(--font-ui);
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  transition:var(--ease);
  text-align:center;
}
.btn:hover{
  background:var(--primary-hover);
  color:#fff;
  box-shadow:var(--shadow-btn);
  transform:translateY(-2px);
}
.btn:active{
  background:var(--primary-hover);
  transform:translateY(0);
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:8px;}
.btn-lg{height:50px;padding:0 30px;font-size:16px;}
.btn-outline{
  background:#fff;
  color:var(--primary);
  border-color:var(--border-deep);
}
.btn-outline:hover{
  background:var(--primary-soft);
  border-color:var(--primary);
  color:var(--primary);
  box-shadow:0 6px 14px rgba(36,86,230,.10);
}
.btn-light-outline{
  background:transparent;
  color:#fff;
  border-color:rgba(255,255,255,.55);
}
.btn-light-outline:hover{
  background:rgba(255,255,255,.12);
  border-color:#fff;
  color:#fff;
  box-shadow:none;
}
.btn:focus-visible,
a:focus-visible,
summary:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:2px;
}
a:focus-visible{border-radius:6px;}
.link-underline{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:600;
  border-bottom:1px solid rgba(36,86,230,.35);
  padding-bottom:2px;
  line-height:1.6;
}
.link-underline:hover{border-color:var(--primary-hover);color:var(--primary-hover);}
.link-underline svg{width:16px;height:16px;}
.chip-label{
  display:inline-flex;
  align-items:center;
  min-height:26px;
  padding:0 10px;
  border-radius:var(--radius-sm);
  background:var(--primary-soft);
  color:var(--primary);
  font-size:12px;
  font-weight:600;
  line-height:1;
}
.chip-label-green{
  background:rgba(22,162,136,.12);
  color:var(--ok);
}
.chip-label-orange{
  background:rgba(242,147,63,.14);
  color:#D97E1F;
}
.card{
  background:var(--card);
  border:1px solid #EDF1F7;
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-card);
  transition:box-shadow .18s ease, transform .18s ease;
}

/* 全站共用 header */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--border);
  box-shadow:0 1px 10px rgba(31,45,86,.03);
}
.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  height:72px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
  max-width:360px;
}
.brand__mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:40px;
  height:40px;
  border-radius:10px;
  background:var(--primary-soft);
  flex:0 0 auto;
}
.brand__name{
  display:block;
  font-size:20px;
  font-weight:700;
  color:var(--text);
  line-height:1.2;
  letter-spacing:-.01em;
  white-space:nowrap;
}
.brand__domain{
  display:block;
  font-size:11px;
  line-height:1.4;
  color:var(--text-weak);
  white-space:nowrap;
}
.nav-chip{
  display:flex;
  align-items:center;
  gap:8px;
  overflow-x:auto;
  scrollbar-width:none;
  -webkit-overflow-scrolling:touch;
  flex-shrink:1;
}
.nav-chip::-webkit-scrollbar{display:none;}
.nav-chip a{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  flex:0 0 auto;
  height:38px;
  padding:0 20px;
  border-radius:999px;
  font-size:14px;
  font-weight:500;
  color:#465A72;
  background:transparent;
  white-space:nowrap;
  border:1px solid transparent;
}
.nav-chip a:hover{
  background:#F1F5FA;
  color:var(--text);
}
.nav-chip a.active{
  background:var(--primary-soft);
  color:var(--primary);
  font-weight:600;
  border-color:rgba(36,86,230,.08);
}
.nav-cta{
  flex-shrink:0;
  margin-left:4px;
}
@media screen and (max-width:1023px){
  .nav-wrap{
    flex-wrap:wrap;
    height:auto;
    padding-top:14px;
    padding-bottom:14px;
  }
  .brand{max-width:230px;}
  .brand__name{font-size:18px;}
  .nav-cta{margin-left:auto;}
}
@media screen and (max-width:639px){
  .nav-wrap{gap:10px;}
  .brand__mark{width:34px;height:34px;}
  .brand__name{font-size:16px;}
  .brand__domain{display:none;}
  .nav-cta .btn-sm{height:36px;padding:0 14px;font-size:13px;}
  .nav-chip{order:3;width:100%;gap:6px;padding-top:2px;}
  .nav-chip a{height:34px;padding:0 15px;font-size:13px;}
}
@media screen and (max-width:360px){
  .brand__name{font-size:15px;}
  .brand__mark{display:none;}
  .nav-cta .btn-sm{padding:0 12px;font-size:12px;}
}

/* 共用 footer */
.site-footer{
  background:#FFFFFF;
  border-top:1px solid var(--border);
  padding-top:52px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr .9fr .9fr;
  gap:48px;
  padding-bottom:40px;
}
.footer-brand p{
  margin-top:16px;
  font-size:14px;
  color:var(--text-sub);
  line-height:1.75;
  max-width:360px;
}
.footer-logo{
  display:flex;
  align-items:center;
  gap:8px;
}
.footer-nav h4{
  font-size:15px;
  font-weight:700;
  margin-bottom:14px;
}
.footer-nav ul li{
  margin-bottom:8px;
}
.footer-nav ul li a{
  font-size:14px;
  color:var(--text-sub);
  display:inline-flex;
  align-items:center;
  gap:4px;
}
.footer-nav ul li a:hover{color:var(--primary);}
.footer-bottom{
  border-top:1px solid var(--border);
  padding:20px 0 24px;
  display:flex;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--text-weak);
}
.footer-bottom a{color:var(--text-weak);}
.footer-bottom a:hover{color:var(--primary);}
@media screen and (max-width:1023px){
  .footer-grid{gap:28px;}
}
@media screen and (max-width:767px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px;}
  .footer-brand{grid-column:1/3;}
}
@media screen and (max-width:520px){
  .footer-grid{grid-template-columns:1fr;}
  .footer-brand{grid-column:auto;}
  .footer-bottom{flex-direction:column;}
}

/* 分类页 Hero */
.cat-hero{
  background:
    radial-gradient(circle at 90% 10%, rgba(36,86,230,.06), transparent 24%),
    #FFFFFF;
  padding-top:68px;
  padding-bottom:4px;
}
.hero-breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-weak);
  margin-bottom:18px;
  flex-wrap:wrap;
}
.hero-breadcrumb a{color:var(--text-sub);}
.hero-breadcrumb a:hover{color:var(--primary);}
.hero-breadcrumb .sep{color:#C1CCDB;}
.hero-kicker{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  color:var(--primary);
  letter-spacing:.02em;
  text-transform:none;
  margin-bottom:14px;
}
.hero-kicker::before{
  content:"";
  width:18px;
  height:2px;
  border-radius:99px;
  background:var(--primary);
}
.cat-hero h1{
  font-size:clamp(36px,5vw,50px);
  font-weight:700;
  line-height:1.2;
  letter-spacing:-.02em;
  color:var(--text);
  margin-bottom:18px;
}
.cat-hero__lead{
  font-size:16px;
  line-height:1.9;
  color:var(--text-sub);
  max-width:610px;
  margin-bottom:26px;
}
.hero-actions{
  display:flex;
  gap:16px;
  align-items:center;
  flex-wrap:wrap;
}
.hero-proof{
  margin-top:32px;
  display:flex;
  gap:34px;
  flex-wrap:wrap;
}
.proof-item{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:var(--text-sub);
}
.proof-num{
  font-size:22px;
  font-weight:700;
  color:var(--text);
  line-height:1;
  font-variant-numeric:tabular-nums;
}
.media-169{
  position:relative;
  aspect-ratio:16/7;
  overflow:hidden;
  border-radius:20px;
  box-shadow:0 12px 34px rgba(31,45,86,.08);
  margin-top:44px;
  background:#EEF3FA;
}
.media-169 img{
  width:100%;
  height:100%;
  object-fit:cover;
  position:absolute;
  inset:0;
}
.media-169::after{
  content:"";
  position:absolute;
  inset:auto 0 0 0;
  height:52%;
  background:linear-gradient(180deg,transparent,rgba(15,33,67,.15));
  pointer-events:none;
}
@media screen and (max-width:1023px){
  .cat-hero{padding-top:56px;}
  .cat-hero h1{font-size:38px;}
}
@media screen and (max-width:640px){
  .cat-hero h1{font-size:32px;}
  .cat-hero__lead{font-size:15px;}
  .platform-cover{margin-top:26px;border-radius:16px;}
}

/* 板块标题 */
.section-head{
  display:flex;
  flex-direction:column;
  gap:12px;
  margin-bottom:38px;
  max-width:820px;
}
.kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  color:var(--primary);
  letter-spacing:.03em;
}
.kicker::after{
  content:"";
  width:22px;
  height:2px;
  border-radius:99px;
  background:var(--primary);
}
.section-head h2{
  font-size:clamp(27px,3vw,34px);
  font-weight:700;
  line-height:1.35;
  letter-spacing:-.01em;
}
.section-head p{
  font-size:15px;
  color:var(--text-sub);
  line-height:1.8;
}
.section-head.center-head{
  align-items:flex-start;
}

/* 下载入口 1主2副 */
.download-wrap{
  display:grid;
  grid-template-columns:1.2fr 1fr;
  gap:24px;
  align-items:stretch;
}
.dl-primary,
.dl-sub{
  display:flex;
  flex-direction:column;
  padding:30px;
  background:#fff;
  border:1px solid #EDF1F7;
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-card);
  transition:box-shadow .18s ease, transform .18s ease;
}
.dl-primary:hover,
.dl-sub:hover{
  box-shadow:var(--shadow-card-hover);
  transform:translateY(-2px);
}
.dl-card-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  flex-wrap:wrap;
  margin-bottom:20px;
}
.dl-version{
  font-size:13px;
  color:var(--text-weak);
}
.dl-primary h3{
  font-size:22px;
  margin-bottom:8px;
}
.dl-primary .dl-desc{
  font-size:15px;
  line-height:1.8;
  color:var(--text-sub);
  margin-bottom:20px;
}
.dl-meta{
  margin:0 0 22px;
  padding:18px 0 8px;
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
}
.dl-meta li{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:9px 0;
  font-size:14px;
  color:var(--text-sub);
}
.dl-meta li strong{
  color:var(--text);
  font-weight:600;
}
.dl-meta li span{color:var(--text);}
.dl-foot{
  margin-top:auto;
  display:flex;
  align-items:center;
  gap:18px;
  flex-wrap:wrap;
}
.dl-others{
  display:grid;
  grid-template-rows:1fr 1fr;
  gap:24px;
}
.dl-sub h4{
  font-size:18px;
  margin-bottom:8px;
}
.dl-sub .dl-desc{
  font-size:14px;
  color:var(--text-sub);
  line-height:1.7;
  margin-bottom:16px;
}
.status-ok{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  font-weight:600;
  color:var(--ok);
}
.status-ok::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:99px;
  background:currentColor;
}
.dl-sub__foot{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
}
@media screen and (max-width:1023px){
  .download-wrap{grid-template-columns:1fr;}
  .dl-others{grid-template-columns:1fr 1fr;grid-template-rows:auto;}
}
@media screen and (max-width:680px){
  .dl-primary,.dl-sub{padding:22px;}
  .dl-others{grid-template-columns:1fr;}
}

/* 下载前检查 */
.check-grid{
  display:grid;
  grid-template-columns:1fr .8fr;
  gap:46px;
  align-items:center;
}
.check-list{
  margin-top:26px;
}
.check-list li{
  display:flex;
  gap:16px;
  padding:18px 0;
  border-bottom:1px solid var(--border);
}
.check-list li:last-child{border-bottom:none;}
.check-index{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;
  height:34px;
  flex:0 0 34px;
  border-radius:10px;
  background:var(--primary-soft);
  color:var(--primary);
  font-size:15px;
  font-weight:700;
}
.check-content h3{
  font-size:17px;
  margin-bottom:4px;
}
.check-content p{
  font-size:14px;
  color:var(--text-sub);
  line-height:1.75;
}
.check-note{
  background:#fff;
  border:1px solid #E9EFF6;
  box-shadow:var(--shadow-card);
  border-radius:var(--radius-md);
  padding:30px;
  position:relative;
  overflow:hidden;
}
.check-note::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:4px;
  background:var(--primary);
}
.check-note h3{
  font-size:18px;
  display:flex;
  align-items:center;
  gap:8px;
  margin-bottom:12px;
}
.check-note p{
  font-size:14px;
  line-height:1.9;
  color:var(--text-sub);
}
.check-note ul{
  margin-top:14px;
  padding-left:16px;
}
.check-note ul li{
  list-style:disc;
  font-size:14px;
  color:var(--text-sub);
  margin-bottom:4px;
}
@media screen and (max-width:1023px){
  .check-grid{grid-template-columns:1fr;gap:32px;}
}

/* 平台说明 */
.platform-shell{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
}
.platform-card{
  background:#fff;
  border:1px solid #EDF1F7;
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-card);
  padding:30px;
  position:relative;
  transition:transform .18s,box-shadow .18s;
}
.platform-card:hover{
  transform:translateY(-2px);
  box-shadow:var(--shadow-card-hover);
}
.platform-icon{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:44px;
  height:44px;
  border-radius:12px;
  background:var(--primary-soft);
  margin-bottom:18px;
}
.platform-card h3{
  font-size:19px;
  margin-bottom:6px;
}
.platform-card .plat-desc{
  font-size:14px;
  color:var(--text-sub);
  line-height:1.8;
  margin-bottom:14px;
}
.plat-tag-list{
  display:flex;
  gap:8px;
  flex-wrap:wrap;
}
.plat-tag{
  display:inline-flex;
  align-items:center;
  min-height:26px;
  padding:0 10px;
  background:#F4F6F8;
  border-radius:7px;
  font-size:12px;
  font-weight:600;
  color:#57708C;
}
.platform-extra{
  margin-top:20px;
  background:var(--primary-soft);
  border-radius:12px;
  padding:12px 16px;
  font-size:13px;
  color:var(--text-sub);
  border-left:3px solid var(--primary);
}
@media screen and (max-width:767px){
  .platform-shell{grid-template-columns:1fr;}
}

/* 校验区 */
.verify-block{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  align-items:center;
}
.image-panel{
  border-radius:20px;
  overflow:hidden;
  box-shadow:var(--shadow-card);
  position:relative;
  min-height:320px;
  background:#E7EFF9;
}
.image-panel img{
  width:100%;
  height:100%;
  object-fit:cover;
  position:absolute;
  inset:0;
}
.verify-step{
  counter-reset:ver;
}
.verify-step li{
  display:flex;
  gap:16px;
  padding:16px 0;
  border-bottom:1px solid var(--border);
  align-items:flex-start;
}
.verify-step li:last-child{border:none;}
.verify-step li em{
  flex:0 0 auto;
  width:34px;
  height:34px;
  background:var(--primary);
  color:#fff;
  border-radius:10px;
  font-style:normal;
  font-weight:700;
  font-size:15px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
}
.verify-step h3{
  font-size:16px;
  margin-bottom:2px;
}
.verify-step p{
  font-size:14px;
  color:var(--text-sub);
  line-height:1.7;
}
@media screen and (max-width:1023px){
  .verify-block{grid-template-columns:1fr;gap:30px;}
  .image-panel{min-height:260px;}
}

/* FAQ */
.faq-section-back{
  background:#fff;
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
}
.faq-wrap{
  max-width:880px;
  margin:0 auto;
}
.faq-list{
  margin-top:30px;
}
.faq-item{
  border:none;
  border-bottom:1px solid var(--border);
  border-radius:0;
  background:transparent;
  padding:0;
}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  cursor:pointer;
  list-style:none;
  padding:22px 2px;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  transition:var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--primary);}
.faq-item[open] summary{color:var(--primary);}
.faq-ico{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:24px;
  height:24px;
  flex:0 0 24px;
  border-radius:50%;
  background:var(--primary-soft);
  transition:transform .15s ease;
}
.faq-item[open] .faq-ico{
  transform:rotate(45deg);
  background:rgba(36,86,230,.12);
}
.faq-item[open] .faq-ico svg{stroke:var(--primary);}
.faq-q-text{
  max-width:780px;
}
.faq-answer{
  padding:0 48px 24px 2px;
  font-size:14.5px;
  color:var(--text-sub);
  line-height:1.9;
}
.faq-answer p{
  margin-bottom:8px;
}
@media screen and (max-width:640px){
  .faq-answer{padding-right:0;}
  .faq-item summary{font-size:15px;}
}

/* 底部 CTA */
.cta-deep{
  background:
    radial-gradient(circle at 80% 20%, rgba(36,86,230,.24), transparent 30%),
    #12273F;
  border-radius:28px;
  padding:52px 48px;
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:40px;
  flex-wrap:wrap;
  margin:96px 0 100px;
}
.cta-deep h2{
  color:#fff;
  font-size:clamp(24px,3.2vw,32px);
  font-weight:700;
  margin-bottom:8px;
}
.cta-deep p{
  color:rgba(255,255,255,.72);
  font-size:15px;
  line-height:1.8;
  max-width:650px;
}
.cta-deep .cta-button-box{
  display:flex;
  gap:14px;
  align-items:center;
  flex-wrap:wrap;
  flex:0 0 auto;
}
@media screen and (max-width:1023px){
  .cta-deep{margin-top:64px;margin-bottom:64px;padding:36px;}
}
@media screen and (max-width:640px){
  .cta-deep{padding:28px 22px;margin:40px 0 48px;}
}

/* roulang page: category2 */
:root {
  --primary: #2456E6;
  --primary-hover: #1B42B8;
  --primary-soft: #EDF3FF;
  --bg: #F6F9FE;
  --card: #FFFFFF;
  --text: #182F45;
  --text-secondary: #57708C;
  --text-weak: #8BA1B8;
  --line: #E5EDF5;
  --line-deep: #DDE7F2;
  --success: #16A288;
  --warning: #F2933F;
  --radius-sm: 8px;
  --radius: 16px;
  --shadow: 0 8px 24px rgba(31, 45, 86, 0.06);
  --shadow-hover: 0 14px 32px rgba(31, 45, 86, 0.10);
  --space-section: 96px;
  --container: 1280px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
}

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

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

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

h1,
h2,
h3,
h4 {
  line-height: 1.3;
}

button,
input,
select,
textarea {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

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

.container-site {
  width: min(var(--container), calc(100% - 32px));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 190px;
  flex-shrink: 0;
}

.brand__mark {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-soft);
  border-radius: 10px;
}

.brand__name {
  display: block;
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.4;
  letter-spacing: 0.2px;
}

.brand__domain {
  display: block;
  font-size: 11px;
  color: var(--text-weak);
  line-height: 1.3;
  margin-top: 2px;
  white-space: nowrap;
}

.nav-chip {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex: 1;
  overflow-x: auto;
  scrollbar-width: none;
}

.nav-chip::-webkit-scrollbar {
  display: none;
}

.nav-chip a {
  height: 36px;
  padding: 0 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: #F1F5FA;
  color: #465A72;
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  transition: background 0.15s ease, color 0.15s ease, transform 0.15s ease;
}

.nav-chip a:hover {
  background: var(--primary-soft);
  color: var(--primary);
}

.nav-chip a.active {
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 600;
}

.nav-cta {
  flex-shrink: 0;
}

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 24px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

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

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 8px 18px rgba(36, 86, 230, 0.18);
}

.btn-outline {
  background: var(--card);
  color: var(--primary);
  border-color: #C9DBF7;
}

.btn-outline:hover {
  background: var(--primary-soft);
  transform: translateY(-1px);
}

.btn-sm {
  height: 40px;
  padding: 0 18px;
  font-size: 14px;
}

.category-hero {
  background: linear-gradient(180deg, #EDF3FF 0%, #F6F9FE 100%);
  padding: 96px 0 72px;
  overflow: hidden;
}

.hero-grid {
  align-items: center;
}

.breadcrumb-line {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--text-weak);
  margin-bottom: 24px;
}

.breadcrumb-line span {
  color: var(--text-weak);
}

.breadcrumb-line .current {
  color: var(--text-secondary);
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid #DDE7F2;
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
}

.hero__eyebrow svg {
  flex-shrink: 0;
}

.hero-title {
  font-size: clamp(32px, 4vw, 46px);
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.2px;
  color: var(--text);
  margin-bottom: 18px;
}

.hero-title span {
  color: var(--primary);
}

.hero-sub {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-secondary);
  max-width: 600px;
  margin-bottom: 28px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-bottom: 30px;
}

.hero-note {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid #FFFFFF;
  border-radius: 12px;
  padding: 14px 16px;
  max-width: 620px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.hero-note svg {
  flex-shrink: 0;
  margin-top: 3px;
}

.hero-media {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid #EDF1F7;
  background: var(--card);
}

.hero-media img {
  width: 100%;
  height: 400px;
  object-fit: cover;
}

.hero-media__caption {
  position: absolute;
  left: 16px;
  bottom: 16px;
  right: 16px;
  background: rgba(255, 255, 255, 0.92);
  border-radius: 12px;
  padding: 12px 16px;
  font-size: 13px;
  color: var(--text-secondary);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: var(--shadow);
}

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

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

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

.section-head {
  max-width: 700px;
  margin: 0 auto 48px;
  text-align: center;
}

.section-head h2 {
  font-size: clamp(26px, 3vw, 34px);
  line-height: 1.4;
  letter-spacing: -0.2px;
  color: var(--text);
  margin-bottom: 12px;
}

.section-head p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-secondary);
}

.section-head--left {
  margin-left: 0;
  margin-right: auto;
  text-align: left;
}

.section-head--left h2 {
  max-width: 680px;
}

.guide-flow__grid {
  display: flex;
  align-items: stretch;
  gap: 56px;
}

.guide-flow__list {
  flex: 0 0 58%;
  max-width: 58%;
}

.guide-flow__media {
  flex: 1;
  position: sticky;
  top: 120px;
  align-self: flex-start;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid #EDF1F7;
  background: var(--card);
}

.guide-flow__media img {
  width: 100%;
  height: 380px;
  object-fit: cover;
}

.guide-flow__media-info {
  padding: 20px;
  background: var(--card);
}

.guide-flow__media-info p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.flow-step {
  position: relative;
  padding: 0 0 32px 0;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

.flow-step:last-child {
  border-bottom: none;
  margin-bottom: 0;
}

.flow-step__index {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.flow-step__num {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 15px;
  font-weight: 700;
}

.flow-step__title {
  font-size: 21px;
  font-weight: 600;
  color: var(--text);
}

.flow-step__desc {
  font-size: 15px;
  color: var(--text-secondary);
  padding-left: 52px;
  line-height: 1.85;
}

.tip-banner {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 18px 20px;
  background: var(--primary-soft);
  border-radius: 12px;
  border: 1px solid #D8E6FD;
  margin-top: 32px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.tip-banner svg {
  flex-shrink: 0;
  margin-top: 4px;
  color: var(--primary);
}

.prepare-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px;
  height: 100%;
}

.prepare-card__header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}

.prepare-card__header .prepare-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: var(--primary-soft);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
}

.prepare-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
}

.check-list {
  list-style: none;
  margin-top: 8px;
}

.check-list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 8px 0;
  font-size: 15px;
  color: var(--text-secondary);
  border-bottom: 1px dashed var(--line-deep);
}

.check-list li:last-child {
  border-bottom: none;
}

.check-list svg {
  flex-shrink: 0;
  margin-top: 5px;
  color: var(--success);
}

.service-note {
  margin-top: 16px;
  padding: 18px 20px;
  background: #FFFBF5;
  border-radius: 12px;
  border: 1px solid #FBE6CE;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.8;
}

.feature-title {
  font-size: 21px;
  font-weight: 600;
  color: var(--text);
  margin: 24px 0 12px;
}

.section-body p {
  margin-bottom: 16px;
}

.info-orbit {
  border-radius: var(--radius);
  background: var(--primary-soft);
  border: 1px solid #D8E6FD;
  padding: 28px;
}

.orbit-label {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.orbit-items {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.orbit-item {
  display: flex;
  gap: 10px;
  align-items: center;
  padding: 12px 14px;
  background: var(--card);
  border: 1px solid #EDF1F7;
  border-radius: 10px;
  font-size: 14px;
  color: var(--text);
  line-height: 1.6;
}

.orbit-item svg {
  color: var(--primary);
  flex-shrink: 0;
}

.faq-section {
  padding-top: 80px;
  padding-bottom: 96px;
}

.faq-layout {
  display: flex;
  gap: 64px;
}

.faq-title-col {
  flex: 0 0 34%;
}

.faq-title-col h2 {
  font-size: clamp(24px, 2.6vw, 32px);
  line-height: 1.5;
  margin-bottom: 12px;
}

.faq-title-col p {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.faq-list-col {
  flex: 1;
}

.faq-item {
  border-radius: var(--radius);
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  overflow: hidden;
  margin-bottom: 16px;
  transition: box-shadow 0.15s ease, transform 0.15s ease;
}

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

.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  text-align: left;
  padding: 20px 24px;
  color: var(--text);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
}

.faq-q svg {
  flex-shrink: 0;
  transition: transform 0.2s ease;
  color: var(--primary);
}

.faq-item.is-open .faq-q svg {
  transform: rotate(45deg);
}

.faq-a {
  display: none;
  padding: 0 24px 22px;
}

.faq-item.is-open .faq-a {
  display: block;
}

.faq-a .faq-p {
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.85;
}

.cta-area {
  background: var(--card);
  border-top: 1px solid var(--line);
  padding: 80px 0 96px;
}

.cta-wrap {
  position: relative;
  overflow: hidden;
  border-radius: 20px;
  background: var(--primary-soft);
  border: 1px solid #D8E6FD;
  padding: 48px;
  display: flex;
  align-items: center;
  gap: 40px;
  justify-content: space-between;
}

.cta-content {
  max-width: 600px;
}

.cta-content h2 {
  font-size: clamp(24px, 3vw, 32px);
  line-height: 1.4;
  color: var(--text);
  margin-bottom: 14px;
}

.cta-content p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.site-footer {
  background: #FFFFFF;
  border-top: 1px solid var(--line);
  padding: 56px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 60px;
  padding-bottom: 40px;
}

.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.footer-logo .brand__mark {
  width: 40px;
  height: 40px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.85;
  max-width: 420px;
}

.footer-nav h4 {
  font-size: 14px;
  color: var(--text);
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-nav ul {
  list-style: none;
  padding: 0;
}

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

.footer-nav a {
  display: inline-flex;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.6;
  transition: color 0.15s ease;
}

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

.footer-bottom {
  border-top: 1px solid var(--line);
  padding: 20px 0 26px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--text-weak);
}

@media (max-width: 1100px) {
  :root {
    --space-section: 84px;
  }
  .guide-flow__grid {
    gap: 32px;
  }
  .guide-flow__list {
    flex-basis: 54%;
    max-width: 54%;
  }
  .faq-layout {
    flex-direction: column;
    gap: 40px;
  }
  .faq-title-col {
    max-width: 720px;
  }
}

@media (max-width: 900px) {
  .nav-wrap {
    flex-wrap: wrap;
    padding: 12px 0;
    gap: 8px;
  }
  .nav-wrap .brand {
    min-width: 0;
  }
  .site-header {
    position: relative;
  }
  .nav-chip {
    order: 3;
    width: 100%;
    flex: 0 0 100%;
    justify-content: flex-start;
    gap: 8px;
    padding: 2px 0;
  }
  .nav-chip a {
    padding: 0 14px;
  }
  .nav-cta {
    margin-left: auto;
  }
  .brand__domain {
    display: none;
  }
  .category-hero {
    padding-top: 56px;
  }
  .guide-flow__grid {
    flex-direction: column;
  }
  .guide-flow__list,
  .guide-flow__media {
    flex: none;
    max-width: 100%;
  }
  .guide-flow__media {
    position: relative;
    top: auto;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .footer-brand {
    grid-column: 1 / -1;
  }
  .hero-title {
    font-size: 34px;
  }
}

@media (max-width: 768px) {
  :root {
    --space-section: 64px;
  }
  .btn {
    height: 44px;
  }
  .cta-wrap {
    flex-direction: column;
    padding: 32px 24px;
    align-items: flex-start;
  }
}

@media (max-width: 600px) {
  .container-site {
    width: min(var(--container), calc(100% - 24px));
  }
  .brand__name {
    font-size: 17px;
  }
  .brand__mark,
  .footer-logo .brand__mark {
    width: 32px;
    height: 32px;
  }
  .nav-cta .btn {
    padding: 0 14px;
    font-size: 13px;
  }
  .hero-title {
    font-size: 30px;
  }
  .hero-sub {
    font-size: 15px;
  }
  .hero-media img {
    height: 260px;
  }
  .guide-flow__media img {
    height: 240px;
  }
  .flow-step__title {
    font-size: 18px;
  }
  .flow-step__desc {
    padding-left: 0;
    margin-top: 6px;
  }
  .flow-step__index {
    margin-bottom: 4px;
  }
  .cta-wrap {
    padding: 24px 20px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
  .faq-item {
    box-shadow: none;
  }
  .faq-q {
    padding: 18px 18px;
  }
  .faq-a {
    padding: 0 18px 18px;
  }
}

/* roulang page: category3 */
:root {
            --primary: #2456E6;
            --primary-hover: #1B42B8;
            --primary-soft: #EDF3FF;
            --page-bg: #F6F9FE;
            --card-bg: #FFFFFF;
            --text-main: #182F45;
            --text-secondary: #57708C;
            --text-weak: #8BA1B8;
            --line: #E5EDF5;
            --line-strong: #DDE7F2;
            --success: #16A288;
            --warning: #F2933F;
            --danger: #D64545;
            --radius-sm: 8px;
            --radius-lg: 16px;
            --shadow-card: 0 8px 24px rgba(31, 45, 86, 0.06);
            --shadow-hover: 0 14px 32px rgba(31, 45, 86, 0.10);
            --container: 1280px;
            --section-desktop: 96px;
            --section-tablet: 72px;
            --section-mobile: 56px;
            --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

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

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.16s ease;
        }

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

        :focus-visible {
            outline: 2px dashed var(--primary);
            outline-offset: 4px;
            border-radius: 4px;
        }

        .container-site {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 28px;
        }

        .row, .row-grid {
            max-width: none;
            margin: 0;
        }

        .row-split {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 40px;
        }

        .row-split>.columns-split {
            width: 100%;
            float: none;
            padding: 0;
        }

        .row-split .span-6 {
            grid-column: span 6;
        }

        .row-split .span-7 {
            grid-column: span 7;
        }

        .row-split .span-5 {
            grid-column: span 5;
        }

        .section-head {
            max-width: 720px;
            margin-bottom: 48px;
        }

        .section-head h2 {
            font-size: clamp(26px, 3.4vw, 34px);
            line-height: 1.36;
            margin: 0 0 12px;
        }

        .section-head p {
            color: var(--text-secondary);
            font-size: 16px;
            margin: 0;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 5px 14px;
            border-radius: 999px;
            font-size: 13px;
            background: var(--primary-soft);
            color: var(--primary);
            font-weight: 500;
            white-space: nowrap;
        }

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

        .site-topbar {
            background: #FCFDFF;
            border-bottom: 1px solid var(--line);
            min-height: 36px;
            display: flex;
            align-items: center;
            font-size: 13px;
            color: var(--text-secondary);
        }

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

        .topbar-links {
            display: flex;
            gap: 16px;
            align-items: center;
        }

        .topbar-links a {
            color: var(--text-secondary);
        }

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

        .site-header {
            background: #FFFFFF;
            border-bottom: 1px solid var(--line);
            position: relative;
            z-index: 20;
        }

        .header-nav-wrap {
            min-height: 72px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            text-decoration: none;
            min-width: 0;
        }

        .brand__mark {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: var(--primary-soft);
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            flex: 0 0 38px;
        }

        .brand__name {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.4;
            letter-spacing: 0.5px;
        }

        .brand__domain {
            display: block;
            font-size: 12px;
            color: var(--text-weak);
            line-height: 1.26;
            letter-spacing: 0.2px;
            font-weight: 400;
        }

        .nav-chip {
            background: #F4F7FB;
            padding: 4px 6px;
            border-radius: 999px;
            display: flex;
            align-items: center;
            gap: 2px;
            flex-wrap: nowrap;
        }

        .nav-chip a {
            font-size: 14px;
            color: #465A72;
            padding: 8px 18px;
            border-radius: 999px;
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: background 0.16s ease, color 0.16s ease;
    font-weight: 500;
}

.nav-chip a:hover {
    background: #FFFFFF;
    color: var(--primary);
}

.nav-chip a.is-active {
    background: var(--primary-soft);
    color: var(--primary);
    font-weight: 600;
}

.nav-cta {
    flex: 0 0 auto;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 15px;
    line-height: 1;
    height: 46px;
    padding: 0 22px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    border: 1px solid transparent;
    transition: background 0.16s ease, border-color 0.16s ease, color 0.16s ease, transform 0.16s ease, box-shadow 0.16s ease;
    font-family: var(--font);
    text-decoration: none;
}

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

.btn-primary:hover {
    background: var(--primary-hover);
    border-color: var(--primary-hover);
    color: #FFFFFF;
    transform: translateY(-1px);
    box-shadow: 0 10px 20px rgba(36, 86, 230, 0.16);
}

.btn-outline {
    background: #FFFFFF;
    border-color: var(--line-strong);
    color: var(--text-main);
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: #FFFFFF;
    transform: translateY(-1px);
}

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

.btn-soft:hover {
    background: #DFE9FF;
    color: var(--primary-hover);
}

.btn-lg {
    height: 54px;
    padding: 0 30px;
    font-size: 16px;
    border-radius: 10px;
}

.btn-sm {
    height: 40px;
    padding: 0 18px;
    font-size: 14px;
}

.btn-link-text {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    font-size: 15px;
    text-decoration: none;
    border-bottom: 1px solid rgba(36, 86, 230, 0.35);
    padding-bottom: 3px;
}

.btn-link-text:hover {
    color: var(--primary-hover);
    border-bottom-color: currentColor;
}

.hero-safe {
    background: var(--primary-soft);
    padding: 64px 0;
    position: relative;
    overflow: hidden;
}

.hero-safe::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: linear-gradient(rgba(36, 86, 230, 0.05) 1px, transparent 1px), linear-gradient(90deg, rgba(36, 86, 230, 0.05) 1px, transparent 1px);
    background-size: 28px 28px;
    pointer-events: none;
}

.hero-safe .container-site,
.hero-safe .row-split {
    position: relative;
}

.hero-content {
    grid-column: span 6;
    padding: 24px 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 20px;
}

.hero-content .badge {
    align-self: flex-start;
}

.hero-content h1 {
    font-size: clamp(34px, 4.6vw, 48px);
    line-height: 1.28;
    margin: 0;
    letter-spacing: 0.2px;
    font-weight: 700;
}

.hero-content .lead-text {
    font-size: 17px;
    line-height: 1.9;
    color: var(--text-secondary);
    max-width: 560px;
    margin: 0;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-items: center;
}

.hero-note {
    display: flex;
    align-items: center;
    gap: 12px;
    background: #FFFFFF;
    border-radius: 12px;
    padding: 12px 16px;
    color: var(--text-secondary);
    font-size: 14px;
    box-shadow: var(--shadow-card);
    width: fit-content;
}

.hero-note svg {
    flex: 0 0 auto;
}

.hero-visual {
    grid-column: span 6;
    position: relative;
}

.hero-card-img {
    border-radius: 20px;
    overflow: hidden;
    background: #FFFFFF;
    box-shadow: var(--shadow-hover);
    border: 1px solid rgba(255, 255, 255, 0.8);
}

.hero-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    aspect-ratio: 4 / 3;
}

.hero-float-note {
    position: absolute;
    left: 0;
    bottom: 28px;
    background: #FFFFFF;
    border-radius: 14px;
    box-shadow: 0 16px 36px rgba(31, 45, 86, 0.12);
    padding: 16px 20px;
    max-width: 260px;
}

.hero-float-note .status-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--success);
    font-size: 14px;
    font-weight: 600;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
    flex: 0 0 8px;
    background: var(--success);
}

.status-dot.warning {
    background: var(--warning);
}

.status-count {
    margin-top: 10px;
    font-size: 14px;
    color: var(--text-secondary);
}

.security-audit-section {
    padding-top: var(--section-desktop);
    padding-bottom: var(--section-desktop);
}

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

.audit-card {
    background: #FFFFFF;
    border-radius: var(--radius-lg);
    padding: 28px;
    border: 1px solid var(--line);
    box-shadow: var(--shadow-card);
    transition: transform 0.16s ease, box-shadow 0.16s ease;
    border-top: 4px solid var(--line-strong);
}

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

.audit-card--normal {
    border-top-color: var(--success);
}

.audit-card--todo {
    border-top-color: var(--warning);
}

.audit-card--feature {
    border-top-color: var(--primary);
    grid-row: span 2;
}

.audit-card__head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 10px;
}

.audit-card__head h3 {
    margin: 0;
    font-size: 19px;
}

.card-label {
    border-radius: 999px;
    background: var(--primary-soft);
    color: var(--primary);
    padding: 3px 12px;
    font-size: 13px;
    white-space: nowrap;
}

.card-label.green {
    background: rgba(22, 162, 136, 0.12);
    color: var(--success);
}

.card-label.orange {
    background: rgba(242, 147, 63, 0.14);
    color: #C7771A;
}

.audit-card p {
    color: var(--text-secondary);
    font-size: 15px;
    margin: 0 0 16px;
}

.audit-card .card-list {
    list-style: none;
    margin: 16px 0 0;
    padding: 0;
    display: grid;
    gap: 10px;
}

.audit-card .card-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    color: var(--text-main);
    font-size: 14px;
}

.audit-card .card-list .card-check {
    color: var(--primary);
    flex: 0 0 auto;
    width: 18px;
    height: 18px;
    margin-top: 3px;
}

.audit-card .card-list .card-warn {
    color: var(--warning);
    flex: 0 0 auto;
    width: 18px;
    height: 18px;
    margin-top: 3px;
}

.audit-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    color: var(--primary);
    margin-top: 18px;
    font-weight: 500;
}

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

.split-block-section {
    padding-bottom: var(--section-desktop);
}

.split-block-card {
    background: #FFFFFF;
    border: 1px solid var(--line);
    border-radius: 24px;
    box-shadow: var(--shadow-card);
    overflow: hidden;
    margin-bottom: 32px;
}

.split-block-card+.split-block-card {
    margin-bottom: 0;
}

.split-block-card .row-split {
    align-items: center;
    gap: 0;
}

.block-text {
    padding: 44px;
}

.block-text h3 {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 22px;
    margin: 0 0 14px;
}

.block-index {
    font-size: 14px;
    background: var(--primary-soft);
    color: var(--primary);
    padding: 4px 10px;
    border-radius: 999px;
    display: inline-flex;
}

.block-text p {
    color: var(--text-secondary);
    font-size: 16px;
    margin: 0 0 18px;
}

.block-text ul {
    margin: 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 12px;
}

.block-text ul li {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    color: var(--text-main);
    font-size: 15px;
}

.block-text ul li svg {
    flex: 0 0 auto;
    margin-top: 5px;
}

.block-media {
    padding: 0;
    min-height: 320px;
    background: var(--primary-soft);
}

.block-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    min-height: 320px;
}

.guide-process {
    background: #FFFFFF;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    padding: var(--section-desktop) 0;
}

.guide-process__inner {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 64px;
    align-items: center;
}

.guide-copy h2 {
    font-size: clamp(26px, 3vw, 34px);
    margin: 0 0 16px;
    line-height: 1.4;
}

.guide-copy>p {
    color: var(--text-secondary);
    font-size: 16px;
    margin: 0 0 28px;
    max-width: 520px;
}

.steps-wrap {
    display: grid;
    gap: 18px;
    margin-top: 24px;
}

.step-item {
    display: flex;
    gap: 16px;
    padding: 18px 20px;
    border: 1px dashed var(--line-strong);
    border-radius: 14px;
    background: #FFFFFF;
    transition: background 0.16s ease, border-color 0.16s ease;
}

.step-item:hover {
    border-color: var(--primary);
    background: var(--primary-soft);
}

.step-number {
    width: 38px;
    height: 38px;
    background: #FFFFFF;
    border: 1px solid var(--line-strong);
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 15px;
    color: var(--primary);
    flex: 0 0 38px;
    box-sizing: border-box;
}

.step-item h4 {
    margin: 0 0 6px;
    font-size: 16px;
}

.step-item p {
    margin: 0;
    font-size: 14px;
    color: var(--text-secondary);
}

.sticky-guide-card {
    background: var(--primary-soft);
    border-radius: 18px;
    padding: 28px;
    border: 1px solid #DCE7FB;
}

.sticky-guide-card h3 {
    font-size: 19px;
    margin: 0 0 10px;
}

.sticky-guide-card p {
    color: var(--text-secondary);
    font-size: 14px;
    margin: 0 0 18px;
}

.guide-card-actions {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
}

.safe-warning-strip {
    margin-bottom: var(--section-desktop);
}

.warning-box {
    background: #FFF8F0;
    border: 1px solid #FFE7CE;
    border-left: 4px solid var(--warning);
    border-radius: 14px;
    padding: 20px 24px;
    display: flex;
    gap: 14px;
    align-items: flex-start;
    color: var(--text-secondary);
    font-size: 14px;
}

.warning-box svg {
    flex: 0 0 auto;
    margin-top: 4px;
    color: var(--warning);
}

.warning-box strong {
    color: var(--text-main);
    font-weight: 600;
}

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

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

.faq-list {
    background: #FFFFFF;
    border-radius: 20px;
    border: 1px solid var(--line);
    box-shadow: var(--shadow-card);
    padding: 8px 32px;
}

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

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

.faq-item summary {
    list-style: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: 24px 0;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-main);
    transition: color 0.16s ease;
}

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

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

.faq-icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    flex: 0 0 28px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-soft);
    color: var(--primary);
    transition: transform 0.18s ease, background 0.16s ease;
}

.faq-icon svg {
    width: 16px;
    height: 16px;
}

details[open] .faq-icon {
    transform: rotate(45deg);
    background: var(--primary);
    color: #FFFFFF;
}

.faq-answer {
    padding: 0 36px 24px 0;
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.9;
}

.faq-answer a {
    color: var(--primary);
    text-decoration: underline;
    text-underline-offset: 4px;
}

.cta-section {
    background: #FFFFFF;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    padding: 64px 0;
}

.cta-block {
    background: var(--primary);
    border-radius: 24px;
    padding: 52px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    text-align: center;
    color: #FFFFFF;
    position: relative;
    overflow: hidden;
    box-shadow: 0 20px 48px rgba(36, 86, 230, 0.2);
}

.cta-block h2 {
    font-size: clamp(25px, 3vw, 34px);
    margin: 0;
    color: #FFFFFF;
}

.cta-block p {
    color: #E6EDFF;
    font-size: 16px;
    max-width: 580px;
    margin: 0;
}

.cta-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 8px;
    justify-content: center;
}

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

.btn-light:hover {
    background: #F3F6FF;
    color: var(--primary-hover);
    border-color: #F3F6FF;
}

.btn-light-outline {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.7);
    color: #FFFFFF;
}

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

.site-footer {
    background: #FFFFFF;
    border-top: 1px solid var(--line);
    padding: 64px 0 0;
    color: var(--text-secondary);
}

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

.footer-logo .brand__mark {
    flex: 0 0 36px;
    width: 36px;
    height: 36px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 18px;
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.9;
    max-width: 390px;
    margin: 0;
}

.footer-nav h4 {
    font-size: 15px;
    color: var(--text-main);
    margin: 0 0 18px;
    font-weight: 600;
}

.footer-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 12px;
}

.footer-nav ul li a {
    font-size: 14px;
    color: var(--text-secondary);
}

.footer-nav ul li a:hover {
    color: var(--primary);
}

.footer-bottom {
    border-top: 1px solid var(--line);
    padding: 22px 0;
    font-size: 13px;
    display: flex;
    justify-content: space-between;
    gap: 16px;
    color: var(--text-weak);
    flex-wrap: wrap;
}

.back-top {
    position: fixed;
    right: 22px;
    bottom: 22px;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: #FFFFFF;
    box-shadow: 0 8px 22px rgba(31, 45, 86, 0.12);
    border: 1px solid var(--line);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    z-index: 30;
    transition: transform 0.16s ease, background 0.16s ease, color 0.16s ease;
}

.back-top:hover {
    transform: translateY(-2px);
    background: var(--primary);
    color: #FFFFFF;
}

@media (max-width: 1024px) {
    .container-site {
        padding: 0 20px;
    }

    .brand__name {
        font-size: 18px;
    }

    .brand__domain {
        display: none;
    }

    .nav-chip {
        max-width: 100%;
        overflow-x: auto;
        scrollbar-width: none;
    }

    .nav-chip::-webkit-scrollbar {
        display: none;
    }

    .row-split .span-6,
    .row-split .span-7,
    .row-split .span-5 {
        grid-column: span 12;
    }

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

    .block-text {
        padding: 32px;
    }

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

@media (max-width: 768px) {
    .hero-safe {
        padding: 48px 0 56px;
    }

    .header-nav-wrap {
        flex-wrap: wrap;
        padding: 12px 0;
    }

    .brand {
        flex: 1 1 0;
    }

    .nav-chip {
        order: 3;
        flex: 1 1 100%;
        border-radius: 12px;
        padding: 6px 8px;
    }

    .nav-chip a {
        font-size: 14px;
        padding: 7px 12px;
        border-radius: 10px;
    }

    .row-split {
        gap: 28px;
    }

    .hero-visual {
        min-height: 280px;
    }

    .hero-card-img img {
        aspect-ratio: 16 / 10;
    }

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

    .audit-card--feature {
        grid-row: auto;
    }

    .split-block-card .row-split {
        gap: 0;
    }

    .split-block-card .block-media {
        order: 1;
    }

    .split-block-card .block-text {
        order: 2;
    }

    .split-block-card__reversed .block-media {
        order: 2;
    }

    .split-block-card__reversed .block-text {
        order: 1;
    }

    .guide-process__inner {
        gap: 24px;
    }

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

    .cta-block {
        padding: 36px 20px;
    }

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

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

@media (max-width: 520px) {
    .hero-content h1 {
        font-size: 32px;
    }

    .hero-content .lead-text {
        font-size: 16px;
    }

    .hero-note {
        flex-wrap: wrap;
    }

    .block-text {
        padding: 26px 20px;
    }

    .audit-card {
        padding: 20px;
    }

    .faq-list {
        padding: 4px 18px;
    }

    .step-item {
        flex-direction: column;
    }

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

    .back-top {
        right: 14px;
        bottom: 14px;
    }
}

@media print {
    .site-topbar,
    .back-top,
    .site-header .nav-cta {
        display: none !important;
    }

    body {
        background: #FFFFFF;
        color: #000000;
    }

    .site-footer,
    .site-header {
        border: 0;
        background: none;
    }

    .hero-safe {
        background: none;
    }
}

/* roulang page: category4 */
:root {
  --c-primary: #2456E6;
  --c-primary-hover: #1B42B8;
  --c-primary-soft: #EDF3FF;
  --c-teal: #16A288;
  --c-warn: #F2933F;
  --c-bg: #F6F9FE;
  --c-card: #FFFFFF;
  --c-text: #182F45;
  --c-text-2: #57708C;
  --c-text-weak: #8BA1B8;
  --c-line: #E5EDF5;
  --c-border: #EDF1F7;
  --r-sm: 8px;
  --r-card: 16px;
  --shadow-card: 0 8px 24px rgba(31, 45, 86, 0.06);
  --shadow-card-hover: 0 14px 32px rgba(31, 45, 86, 0.10);
  --fs-body: 15px;
  --fs-body-sm: 13px;
  --fs-h1: clamp(30px, 4vw, 44px);
  --fs-h2: clamp(24px, 3vw, 32px);
  --fs-h3: 19px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: var(--font);
  font-size: var(--fs-body);
  line-height: 1.8;
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
}
body.no-scroll {
  overflow: hidden;
}
img {
  max-width: 100%;
  display: block;
}
a {
  text-decoration: none;
  color: var(--c-primary);
  transition: color .18s ease;
}
a:hover {
  color: var(--c-primary-hover);
}
ul {
  margin: 0;
  padding: 0;
  list-style: none;
}
p {
  margin: 0;
}
h1, h2, h3, h4 {
  margin: 0;
  font-weight: 700;
  line-height: 1.4;
  color: var(--c-text);
}
.container-site {
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}
.row {
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

/* Top info strip */
.top-strip {
  background: #FFFFFF;
  border-bottom: 1px solid var(--c-line);
  font-size: 13px;
  color: var(--c-text-2);
  min-height: 36px;
}
.top-strip__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 36px;
  gap: 16px;
}
.top-strip__inner span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.top-strip__inner .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-teal);
  display: inline-block;
}
.top-strip__inner a {
  color: var(--c-text-2);
  white-space: nowrap;
}
.top-strip__inner a:hover {
  color: var(--c-primary);
}

/* Header & Navigation */
.site-header {
  background: #FFFFFF;
  border-bottom: 1px solid var(--c-line);
  box-shadow: 0 2px 12px rgba(31, 45, 86, 0.03);
  position: sticky;
  top: 0;
  z-index: 80;
}
.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  height: 76px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  color: var(--c-text);
}
.brand:hover {
  color: var(--c-text);
}
.brand__mark {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--c-primary-soft);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.brand__name {
  display: block;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--c-text);
}
.brand__domain {
  display: block;
  font-size: 12px;
  line-height: 1.4;
  color: var(--c-text-weak);
  letter-spacing: .2px;
}
.nav-chip {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 6px;
  background: #F4F7FB;
  border-radius: 999px;
  flex-shrink: 0;
}
.nav-chip a {
  height: 34px;
  display: inline-flex;
  align-items: center;
  padding: 0 16px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: #465A72;
  background: transparent;
  white-space: nowrap;
  transition: all .18s ease;
}
.nav-chip a:hover {
  background: #FFFFFF;
  color: var(--c-text);
}
.nav-chip a.active {
  background: var(--c-primary-soft);
  color: var(--c-primary);
}
.nav-cta {
  flex-shrink: 0;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 24px;
  border-radius: var(--r-sm);
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background .18s ease, border-color .18s ease, color .18s ease, box-shadow .18s ease, transform .18s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--c-primary);
  color: #FFFFFF !important;
  box-shadow: 0 6px 16px rgba(36, 86, 230, 0.22);
}
.btn-primary:hover {
  background: var(--c-primary-hover);
  box-shadow: 0 8px 22px rgba(36, 86, 230, 0.26);
  transform: translateY(-1px);
}
.btn-ghost {
  background: #FFFFFF;
  border-color: #D3DFEC;
  color: var(--c-text) !important;
}
.btn-ghost:hover {
  border-color: var(--c-primary);
  color: var(--c-primary) !important;
  transform: translateY(-1px);
}
.btn-outline {
  background: transparent;
  border-color: var(--c-primary);
  color: var(--c-primary) !important;
  height: 42px;
  padding: 0 20px;
}
.btn-outline:hover {
  background: var(--c-primary-soft);
}
.btn-sm {
  height: 40px;
  padding: 0 18px;
  font-size: 14px;
  border-radius: 8px;
}
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-weight: 600;
  color: var(--c-primary);
  border-bottom: 1px solid rgba(36, 86, 230, 0.25);
  padding-bottom: 1px;
}

/* Breadcrumb */
.breadcrumb-nav {
  padding: 16px 0 0;
  font-size: 13px;
  color: var(--c-text-weak);
  display: flex;
  align-items: center;
  gap: 8px;
}
.breadcrumb-nav a {
  color: var(--c-text-2);
}
.breadcrumb-nav a:hover {
  color: var(--c-primary);
}
.breadcrumb-nav span {
  color: var(--c-text-weak);
}

/* Hero */
.hero-cat {
  background: linear-gradient(135deg, #EAF2FF 0%, #F8FBFF 55%, #FFFFFF 100%);
  padding: 72px 0 64px;
  border-bottom: 1px solid var(--c-line);
  position: relative;
}
.hero-cat:before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 85% 15%, rgba(36, 86, 230, 0.08) 0, transparent 280px);
  pointer-events: none;
}
.hero-cat__row {
  position: relative;
  z-index: 1;
  align-items: center;
}
.hero-cat__content {
  padding-right: 32px;
}
.hero-cat__content h1 {
  font-size: var(--fs-h1);
  line-height: 1.35;
  letter-spacing: .5px;
  margin: 14px 0 18px;
  font-weight: 800;
  color: var(--c-text);
}
.hero-cat__lead {
  font-size: 16px;
  line-height: 1.9;
  color: var(--c-text-2);
  max-width: 540px;
  margin-bottom: 28px;
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.hero-tags {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 32px;
}
.hero-tags li {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 30px;
  padding: 0 12px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid #DFE9F4;
  border-radius: 999px;
  font-size: 13px;
  color: var(--c-text-2);
}
.hero-cat__media {
  position: relative;
}
.hero-media {
  background: #FFFFFF;
  border-radius: var(--r-card);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--c-border);
  padding: 10px;
}
.hero-media img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  border-radius: 10px;
}
.hero-float {
  position: absolute;
  right: 28px;
  bottom: -24px;
  background: #FFFFFF;
  border: 1px solid var(--c-border);
  box-shadow: var(--shadow-card);
  border-radius: 12px;
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 14px;
}
.hero-float__icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--c-primary-soft);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.hero-float__text {
  font-size: 13px;
  color: var(--c-text-2);
  line-height: 1.5;
}
.hero-float__text strong {
  display: block;
  font-size: 15px;
  color: var(--c-text);
}

/* Section basis */
.section {
  padding: 90px 0;
}
.section-soft {
  background: #FFFFFF;
}
.section-white {
  background: #FFFFFF;
}
.section-head {
  max-width: 720px;
}
.section-head .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 12px;
  font-size: 13px;
  font-weight: 600;
  color: var(--c-primary);
}
.eyebrow:before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--c-primary);
  border-radius: 2px;
  display: inline-block;
}
.section-head h2 {
  font-size: var(--fs-h2);
  color: var(--c-text);
  margin: 8px 0 14px;
  font-weight: 800;
}
.section-head .section-head__desc {
  font-size: 15px;
  color: var(--c-text-2);
  line-height: 1.8;
}

/* Conclusion summary cards */
.conclusion-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 42px;
}
.conclusion-card {
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: var(--r-card);
  padding: 28px 24px;
  box-shadow: var(--shadow-card);
  transition: box-shadow .18s ease, transform .18s ease;
  position: relative;
  overflow: hidden;
}
.conclusion-card:after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 3px;
  background: var(--c-primary);
  opacity: 0;
  transition: opacity .18s ease;
}
.conclusion-card:nth-child(2):after {
  background: var(--c-teal);
}
.conclusion-card:nth-child(3):after {
  background: var(--c-warn);
}
.conclusion-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}
.conclusion-card:hover:after {
  opacity: 1;
}
.conclusion-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--c-primary-soft);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}
.conclusion-card:nth-child(2) .conclusion-icon {
  background: #E8F8F4;
}
.conclusion-card:nth-child(3) .conclusion-icon {
  background: #FFF4E8;
}
.conclusion-card h3 {
  font-size: 18px;
  margin-bottom: 8px;
}
.conclusion-card p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-text-2);
}
.conclusion-tag {
  display: inline-block;
  margin-top: 16px;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 6px;
  background: var(--c-primary-soft);
  color: var(--c-primary);
}
.conclusion-card:nth-child(2) .conclusion-tag {
  background: #E8F8F4;
  color: var(--c-teal);
}
.conclusion-card:nth-child(3) .conclusion-tag {
  background: #FFF4E8;
  color: #D97A28;
}

/* Steps */
.steps-row {
  margin-top: 44px;
}
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.step-card {
  background: #FFFFFF;
  border: 1px solid var(--c-border);
  border-radius: var(--r-card);
  padding: 32px 28px 28px;
  position: relative;
  box-shadow: var(--shadow-card);
  transition: all .2s ease;
}
.step-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card-hover);
}
.step-index {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: var(--c-primary);
  color: #FFFFFF;
  font-size: 18px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  box-shadow: 0 6px 14px rgba(36, 86, 230, 0.22);
}
.step-card h3 {
  font-size: 17px;
  margin-bottom: 10px;
}
.step-card p {
  font-size: 14px;
  color: var(--c-text-2);
  line-height: 1.75;
}

/* FAQ */
.faq-block {
  background: #FBFCFE;
  padding: 96px 0;
}
.faq-shell {
  background: #FFFFFF;
  border: 1px solid var(--c-line);
  border-radius: 20px;
  box-shadow: 0 10px 30px rgba(31, 45, 86, 0.06);
  padding: 24px 34px 32px;
  margin-top: 44px;
}
.faq-group-title {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 26px 4px 10px;
  border-bottom: 1px solid var(--c-line);
}
.faq-group-title svg {
  width: 20px;
  height: 20px;
  stroke: var(--c-primary);
  stroke-width: 1.7;
  flex-shrink: 0;
}
.faq-group-title h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--c-text);
}
.faq-item {
  border-bottom: 1px solid #F0F3F8;
}
.faq-item:last-child {
  border-bottom: none;
}
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  list-style: none;
  cursor: pointer;
  padding: 22px 4px 18px;
  transition: background .18s ease;
  user-select: none;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary:hover .faq-q {
  color: var(--c-primary);
}
.faq-q {
  font-size: 16px;
  font-weight: 600;
  color: var(--c-text);
  line-height: 1.6;
  transition: color .18s ease;
}
.faq-arrow {
  flex-shrink: 0;
  stroke: var(--c-text-weak);
  stroke-width: 1.8;
  fill: none;
  transition: transform .2s ease, stroke .2s ease;
}
.faq-item[open] .faq-arrow {
  transform: rotate(180deg);
  stroke: var(--c-primary);
}
.faq-a {
  padding: 2px 36px 22px 4px;
  font-size: 14px;
  color: var(--c-text-2);
  line-height: 1.9;
}

/* Notice card */
.notice-row {
  margin-top: 48px;
}
.notice-card {
  background: #FFF9F2;
  border: 1px solid #F7DFC4;
  border-radius: var(--r-card);
  padding: 28px 30px;
  display: flex;
  gap: 22px;
  align-items: flex-start;
}
.notice-card__icon {
  width: 42px;
  height: 42px;
  background: #FFFFFF;
  border-radius: 12px;
  border: 1px solid #F3D2B0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.notice-card h3 {
  font-size: 17px;
  margin-bottom: 8px;
  color: #A85B1A;
}
.notice-card p {
  font-size: 14px;
  color: #8A5A31;
  line-height: 1.85;
}

/* CTA strip */
.cta-section {
  padding: 90px 0 100px;
}
.cta-panel {
  background: var(--c-primary-soft);
  border: 1px solid #DBE7FF;
  border-radius: 24px;
  padding: 48px 48px 42px;
  display: flex;
  align-items: center;
  gap: 40px;
  justify-content: space-between;
  flex-wrap: wrap;
}
.cta-panel h2 {
  font-size: 28px;
  color: var(--c-text);
  margin-bottom: 10px;
  font-weight: 800;
}
.cta-panel p {
  color: var(--c-text-2);
  font-size: 15px;
  max-width: 620px;
}
.cta-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

/* Footer */
.site-footer {
  background: #F0F5FB;
  border-top: 1px solid var(--c-line);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  padding: 56px 0 32px;
}
.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.footer-brand p {
  font-size: 14px;
  color: var(--c-text-2);
  line-height: 1.85;
  max-width: 400px;
}
.footer-nav h4 {
  font-size: 15px;
  margin-bottom: 14px;
  color: var(--c-text);
  font-weight: 700;
}
.footer-nav ul li {
  margin-bottom: 9px;
}
.footer-nav ul a {
  color: var(--c-text-2);
  font-size: 14px;
  transition: color .18s ease;
}
.footer-nav ul a:hover {
  color: var(--c-primary);
}
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  justify-content: space-between;
  border-top: 1px solid var(--c-line);
  padding: 22px 0 30px;
  font-size: 13px;
  color: var(--c-text-weak);
}

@media print {
  .site-header,
  .top-strip,
  .cta-section,
  .site-footer {
    display: none;
  }
  body {
    background: #FFFFFF;
  }
  .hero-cat {
    background: #FFFFFF;
    padding: 24px 0;
  }
  .section {
    padding: 40px 0;
  }
  .faq-block {
    background: #FFFFFF;
    padding: 40px 0;
  }
  .faq-shell {
    box-shadow: none;
    border: 0;
    padding: 0;
  }
  .faq-item {
    break-inside: avoid;
  }
}

@media (max-width: 1024px) {
  .nav-chip {
    gap: 4px;
  }
  .nav-chip a {
    padding: 0 12px;
  }
  .brand__domain {
    display: none;
  }
  .hero-cat {
    padding: 60px 0 54px;
  }
  .hero-cat__content {
    padding-right: 0;
  }
  .hero-media img {
    height: 260px;
  }
  .section {
    padding: 72px 0;
  }
}

@media (max-width: 768px) {
  .top-strip__inner {
    font-size: 12px;
  }
  .top-strip__inner > span {
    display: none;
  }
  .top-strip__inner {
    justify-content: flex-end;
  }
  .nav-wrap {
    height: auto;
    min-height: 64px;
    flex-wrap: wrap;
    padding-top: 6px;
    padding-bottom: 6px;
  }
  .brand {
    flex: 1 1 auto;
  }
  .brand__name {
    font-size: 18px;
  }
  .brand__domain {
    display: none;
  }
  .nav-chip {
    order: 3;
    width: 100%;
    overflow-x: auto;
    justify-content: flex-start;
    padding: 4px;
    border-radius: 12px;
    -webkit-overflow-scrolling: touch;
  }
  .nav-chip::-webkit-scrollbar {
    height: 3px;
  }
  .nav-chip::-webkit-scrollbar-thumb {
    background: #D7E2EF;
    border-radius: 4px;
  }
  .nav-chip a {
    flex-shrink: 0;
  }
  .nav-cta {
    order: 2;
  }
  .hero-cat__row {
    display: block;
  }
  .hero-cat__content {
    margin-bottom: 42px;
  }
  .hero-actions,
  .hero-tags {
    justify-content: flex-start;
  }
  .hero-media img {
    height: 230px;
  }
  .hero-float {
    right: 20px;
    bottom: -18px;
  }
  .conclusion-grid,
  .steps-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .faq-shell {
    padding: 20px 20px 26px;
  }
  .cta-panel {
    padding: 34px 24px;
  }
}

@media (max-width: 520px) {
  .section {
    padding: 56px 0;
  }
  .faq-block {
    padding: 64px 0;
  }
  .hero-cat {
    padding: 46px 0 40px;
  }
  .hero-cat__content h1 {
    font-size: 28px;
  }
  .hero-cat__lead {
    font-size: 15px;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .hero-actions {
    gap: 12px;
  }
  .hero-media img {
    height: 190px;
  }
  .hero-float {
    position: relative;
    right: auto;
    bottom: auto;
    margin-top: 14px;
    justify-content: center;
  }
  .faq-q {
    font-size: 15px;
  }
  .faq-a {
    padding-right: 0;
    font-size: 13px;
  }
  .cta-panel {
    display: block;
  }
  .cta-actions {
    margin-top: 20px;
  }
  .footer-bottom {
    flex-direction: column;
  }
}