/* roulang page: index */
:root {
      --primary: #2F6FED;
      --primary-600: #255ed0;
      --primary-50: #EAF3FF;
      --primary-25: #F5F9FF;
      --cyan-soft: #EEF8FF;
      --bg: #F7FAFE;
      --surface: #FFFFFF;
      --text: #172033;
      --muted: #64748B;
      --muted-2: #8AA0B8;
      --border: #E5EDF6;
      --warning: #F59E0B;
      --success: #10B981;
      --radius-lg: 24px;
      --radius-md: 18px;
      --radius-sm: 12px;
      --shadow: 0 14px 36px rgba(30, 64, 120, .08);
      --shadow-hover: 0 18px 46px rgba(30, 64, 120, .14);
      --sidebar: 256px;
      --ease: all .22s ease;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
      min-width: 320px;
    }

    body {
      margin: 0;
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      color: var(--text);
      background:
        radial-gradient(circle at 82% 4%, rgba(47, 111, 237, .10), transparent 28%),
        radial-gradient(circle at 24% 24%, rgba(59, 130, 246, .08), transparent 26%),
        var(--bg);
      line-height: 1.8;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: var(--ease);
    }

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

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

    button, input {
      font: inherit;
    }

    ::selection {
      background: rgba(47, 111, 237, .16);
      color: var(--primary-600);
    }

    .desktop-shell {
      position: fixed;
      inset: 0 auto 0 0;
      width: var(--sidebar);
      background: rgba(255, 255, 255, .94);
      border-right: 1px solid var(--border);
      box-shadow: 12px 0 32px rgba(30, 64, 120, .04);
      z-index: 1020;
      padding: 24px 18px;
      display: flex;
      flex-direction: column;
      backdrop-filter: blur(12px);
    }

    .brand-mark {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 6px 8px 22px;
      border-bottom: 1px solid var(--border);
      margin-bottom: 18px;
    }

    .brand-icon {
      width: 42px;
      height: 42px;
      border-radius: 15px;
      display: grid;
      place-items: center;
      color: #fff;
      background:
        linear-gradient(135deg, var(--primary), #7CB7FF);
      box-shadow: 0 12px 24px rgba(47, 111, 237, .22);
      flex: 0 0 auto;
      font-weight: 800;
      letter-spacing: .03em;
    }

    .brand-text {
      min-width: 0;
    }

    .brand-title {
      display: block;
      font-size: 15px;
      font-weight: 800;
      line-height: 1.35;
      color: var(--text);
    }

    .brand-sub {
      display: block;
      margin-top: 2px;
      font-size: 12px;
      color: var(--muted);
      line-height: 1.4;
    }

    .side-nav {
      display: grid;
      gap: 8px;
      margin-top: 6px;
    }

    .nav-link-custom {
      position: relative;
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 12px 13px;
      border-radius: 14px;
      color: #3A4861;
      font-size: 15px;
      font-weight: 650;
      border: 1px solid transparent;
    }

    .nav-link-custom .nav-ico {
      width: 30px;
      height: 30px;
      border-radius: 11px;
      display: grid;
      place-items: center;
      background: var(--primary-25);
      color: var(--primary);
      font-size: 15px;
      flex: 0 0 auto;
      transition: var(--ease);
    }

    .nav-link-custom:hover {
      background: var(--primary-25);
      border-color: rgba(47, 111, 237, .12);
      transform: translateX(2px);
    }

    .nav-link-custom.active {
      color: var(--primary);
      background: var(--primary-50);
      border-color: rgba(47, 111, 237, .18);
    }

    .nav-link-custom.active::before {
      content: "";
      position: absolute;
      left: -18px;
      top: 14px;
      bottom: 14px;
      width: 3px;
      border-radius: 999px;
      background: var(--primary);
    }

    .nav-link-custom.active .nav-ico {
      color: #fff;
      background: var(--primary);
      box-shadow: 0 10px 20px rgba(47, 111, 237, .20);
    }

    .sidebar-note {
      margin-top: auto;
      padding: 16px;
      border-radius: 18px;
      background: linear-gradient(180deg, #FFF8E8, #FFFFFF);
      border: 1px solid rgba(245, 158, 11, .22);
      color: #7A560C;
      font-size: 13px;
      line-height: 1.65;
    }

    .sidebar-note strong {
      display: flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 6px;
      color: #9A6500;
      font-size: 14px;
    }

    .mobile-topbar {
      display: none;
      position: sticky;
      top: 0;
      z-index: 1030;
      height: 66px;
      padding: 10px 16px;
      background: rgba(255, 255, 255, .94);
      border-bottom: 1px solid var(--border);
      backdrop-filter: blur(12px);
    }

    .mobile-topbar .brand-mark {
      padding: 0;
      margin: 0;
      border: 0;
    }

    .menu-btn {
      width: 42px;
      height: 42px;
      border-radius: 14px;
      border: 1px solid var(--border);
      background: #fff;
      color: var(--primary);
      display: grid;
      place-items: center;
      transition: var(--ease);
    }

    .menu-btn:hover,
    .menu-btn:focus {
      background: var(--primary-50);
      border-color: rgba(47, 111, 237, .22);
      outline: none;
      box-shadow: 0 0 0 4px rgba(47, 111, 237, .10);
    }

    .offcanvas {
      border-right: 1px solid var(--border);
      background: #fff;
    }

    .offcanvas-header {
      border-bottom: 1px solid var(--border);
      padding: 18px;
    }

    .page {
      margin-left: var(--sidebar);
      min-height: 100vh;
    }

    .content-wrap {
      width: min(1180px, calc(100% - 48px));
      margin: 0 auto;
    }

    .section {
      padding: 42px 0;
    }

    .section:first-child {
      padding-top: 34px;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 12px;
      border-radius: 999px;
      background: var(--primary-50);
      border: 1px solid rgba(47, 111, 237, .12);
      color: var(--primary);
      font-size: 13px;
      font-weight: 750;
      line-height: 1.3;
    }

    .eyebrow.warn {
      color: #96610A;
      background: #FFF7E5;
      border-color: rgba(245, 158, 11, .22);
    }

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

    .section-title {
      margin: 12px 0 0;
      font-size: clamp(24px, 3vw, 32px);
      line-height: 1.25;
      font-weight: 800;
      letter-spacing: -.02em;
      color: var(--text);
    }

    .section-desc {
      margin: 10px 0 0;
      max-width: 760px;
      color: var(--muted);
      font-size: 16px;
      line-height: 1.85;
    }

    .btn-brand {
      --bs-btn-padding-x: 20px;
      --bs-btn-padding-y: 12px;
      --bs-btn-border-radius: 14px;
      --bs-btn-font-weight: 750;
      border: 0;
      color: #fff;
      background: linear-gradient(135deg, var(--primary), #65A5FF);
      box-shadow: 0 14px 26px rgba(47, 111, 237, .24);
      transition: var(--ease);
    }

    .btn-brand:hover,
    .btn-brand:focus {
      color: #fff;
      background: linear-gradient(135deg, var(--primary-600), #3B82F6);
      transform: translateY(-2px);
      box-shadow: 0 18px 34px rgba(47, 111, 237, .30);
    }

    .btn-outline-brand {
      --bs-btn-padding-x: 20px;
      --bs-btn-padding-y: 12px;
      --bs-btn-border-radius: 14px;
      --bs-btn-font-weight: 750;
      color: var(--primary);
      background: rgba(255, 255, 255, .88);
      border: 1px solid rgba(47, 111, 237, .22);
      transition: var(--ease);
    }

    .btn-outline-brand:hover,
    .btn-outline-brand:focus {
      color: var(--primary-600);
      background: var(--primary-50);
      border-color: rgba(47, 111, 237, .32);
      transform: translateY(-2px);
      box-shadow: 0 12px 24px rgba(30, 64, 120, .08);
    }

    .text-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--primary);
      font-weight: 750;
      font-size: 14px;
    }

    .text-link .arrow {
      transition: var(--ease);
    }

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

    .hero {
      position: relative;
      overflow: hidden;
      border-radius: 30px;
      padding: clamp(26px, 4vw, 48px);
      min-height: 520px;
      background:
        linear-gradient(135deg, rgba(47, 111, 237, .96), rgba(91, 154, 255, .82)),
        radial-gradient(circle at 80% 20%, rgba(255, 255, 255, .38), transparent 30%);
      box-shadow: 0 22px 52px rgba(47, 111, 237, .20);
      color: #fff;
      isolation: isolate;
    }

    .hero::before {
      content: "";
      position: absolute;
      inset: 22px;
      border-radius: 26px;
      border: 1px solid rgba(255, 255, 255, .24);
      pointer-events: none;
      z-index: -1;
    }

    .hero::after {
      content: "";
      position: absolute;
      right: -70px;
      bottom: -110px;
      width: 430px;
      height: 430px;
      border-radius: 50%;
      background: rgba(255, 255, 255, .16);
      filter: blur(2px);
      z-index: -2;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.02fr .98fr;
      gap: 34px;
      align-items: stretch;
    }

    .promo-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 8px 13px;
      border-radius: 999px;
      background: rgba(255, 255, 255, .18);
      color: #fff;
      border: 1px solid rgba(255, 255, 255, .25);
      font-size: 13px;
      font-weight: 750;
      backdrop-filter: blur(8px);
    }

    .burst {
      position: absolute;
      top: 28px;
      right: 34px;
      width: 112px;
      height: 112px;
      display: grid;
      place-items: center;
      text-align: center;
      color: #855A05;
      background: #FFE8A6;
      font-weight: 900;
      font-size: 16px;
      line-height: 1.2;
      transform: rotate(9deg);
      clip-path: polygon(50% 0%, 60% 18%, 80% 10%, 82% 32%, 100% 42%, 84% 56%, 92% 78%, 68% 76%, 56% 100%, 42% 80%, 18% 90%, 20% 66%, 0% 55%, 17% 40%, 9% 18%, 33% 21%);
      box-shadow: 0 14px 26px rgba(60, 42, 0, .12);
    }

    .hero h1 {
      margin: 24px 0 0;
      max-width: 680px;
      font-size: clamp(31px, 5vw, 46px);
      line-height: 1.18;
      font-weight: 900;
      letter-spacing: -.035em;
    }

    .hero-lead {
      margin: 20px 0 0;
      max-width: 690px;
      color: rgba(255, 255, 255, .90);
      font-size: 17px;
      line-height: 1.9;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 28px;
    }

    .hero .btn-brand {
      background: #fff;
      color: var(--primary);
      box-shadow: 0 16px 30px rgba(12, 37, 82, .18);
    }

    .hero .btn-brand:hover {
      background: #F3F8FF;
      color: var(--primary-600);
    }

    .hero .btn-outline-brand {
      color: #fff;
      background: rgba(255, 255, 255, .12);
      border-color: rgba(255, 255, 255, .36);
    }

    .hero .btn-outline-brand:hover {
      background: rgba(255, 255, 255, .22);
      color: #fff;
    }

    .hero-points {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 12px;
      margin-top: 30px;
      max-width: 720px;
    }

    .hero-point {
      padding: 14px;
      border-radius: 18px;
      background: rgba(255, 255, 255, .14);
      border: 1px solid rgba(255, 255, 255, .20);
      backdrop-filter: blur(10px);
    }

    .hero-point b {
      display: block;
      font-size: 18px;
      line-height: 1.2;
      margin-bottom: 4px;
    }

    .hero-point span {
      display: block;
      color: rgba(255, 255, 255, .82);
      font-size: 13px;
      line-height: 1.5;
    }

    .hero-board {
      align-self: end;
      margin-top: 52px;
      display: grid;
      gap: 14px;
    }

    .entry-panel {
      position: relative;
      padding: 22px;
      border-radius: 26px;
      background: rgba(255, 255, 255, .93);
      color: var(--text);
      box-shadow: 0 20px 48px rgba(19, 47, 92, .22);
    }

    .panel-title {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      margin-bottom: 18px;
    }

    .panel-title strong {
      font-size: 18px;
      font-weight: 850;
    }

    .panel-title span {
      padding: 5px 10px;
      border-radius: 999px;
      color: var(--primary);
      background: var(--primary-50);
      font-size: 12px;
      font-weight: 800;
    }

    .step-card {
      display: grid;
      grid-template-columns: 38px 1fr;
      gap: 12px;
      padding: 13px 0;
      border-top: 1px solid var(--border);
    }

    .step-card:first-of-type {
      border-top: 0;
      padding-top: 0;
    }

    .step-num {
      width: 38px;
      height: 38px;
      display: grid;
      place-items: center;
      border-radius: 14px;
      background: var(--primary-50);
      color: var(--primary);
      font-weight: 900;
    }

    .step-card h3 {
      margin: 0;
      font-size: 15px;
      font-weight: 800;
      line-height: 1.4;
    }

    .step-card p {
      margin: 4px 0 0;
      color: var(--muted);
      font-size: 13px;
      line-height: 1.6;
    }

    .soft-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow);
      transition: var(--ease);
    }

    .soft-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(47, 111, 237, .20);
    }

    .story-wrap {
      display: grid;
      grid-template-columns: .85fr 1.15fr;
      gap: 22px;
      align-items: stretch;
    }

    .story-intro {
      padding: 28px;
      background:
        linear-gradient(180deg, #fff, #F7FBFF);
    }

    .story-intro p {
      margin: 14px 0 0;
      color: var(--muted);
      font-size: 16px;
    }

    .story-paragraphs {
      display: grid;
      gap: 14px;
    }

    .article-note {
      padding: 22px 24px;
      border-radius: 22px;
      background: #fff;
      border: 1px solid var(--border);
      box-shadow: 0 10px 28px rgba(30, 64, 120, .06);
    }

    .article-note h3 {
      display: flex;
      align-items: center;
      gap: 10px;
      margin: 0 0 8px;
      font-size: 18px;
      font-weight: 820;
    }

    .dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: var(--primary);
      box-shadow: 0 0 0 6px rgba(47, 111, 237, .10);
      flex: 0 0 auto;
    }

    .article-note p {
      margin: 0;
      color: var(--muted);
      font-size: 15px;
      line-height: 1.85;
    }

    .feature-layout {
      display: grid;
      grid-template-columns: 1.08fr .92fr;
      gap: 18px;
      align-items: stretch;
    }

    .feature-big {
      padding: 30px;
      min-height: 360px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      background:
        linear-gradient(180deg, #fff, #F8FBFF);
    }

    .abstract-cover {
      position: relative;
      min-height: 150px;
      border-radius: 22px;
      background:
        linear-gradient(135deg, #EAF3FF, #FFFFFF 55%, #DDEEFF);
      border: 1px solid var(--border);
      overflow: hidden;
      margin-bottom: 20px;
    }

    .abstract-cover::before,
    .abstract-cover::after {
      content: "";
      position: absolute;
      border-radius: 50%;
      background: rgba(47, 111, 237, .13);
    }

    .abstract-cover::before {
      width: 130px;
      height: 130px;
      right: 26px;
      top: 22px;
    }

    .abstract-cover::after {
      width: 88px;
      height: 88px;
      left: 34px;
      bottom: -18px;
    }

    .cover-lines {
      position: absolute;
      inset: 28px;
      display: grid;
      gap: 12px;
      align-content: center;
      z-index: 1;
    }

    .cover-lines i {
      display: block;
      height: 10px;
      border-radius: 999px;
      background: rgba(47, 111, 237, .14);
    }

    .cover-lines i:nth-child(1) { width: 52%; }
    .cover-lines i:nth-child(2) { width: 78%; }
    .cover-lines i:nth-child(3) { width: 42%; }

    .badge-soft {
      display: inline-flex;
      align-items: center;
      width: fit-content;
      padding: 6px 11px;
      border-radius: 999px;
      background: var(--primary-50);
      color: var(--primary);
      border: 1px solid rgba(47, 111, 237, .12);
      font-size: 12px;
      font-weight: 800;
    }

    .card-title-custom {
      margin: 12px 0 8px;
      font-size: 21px;
      line-height: 1.35;
      font-weight: 850;
      color: var(--text);
      transition: var(--ease);
    }

    .soft-card:hover .card-title-custom {
      color: var(--primary);
    }

    .card-desc {
      margin: 0;
      color: var(--muted);
      font-size: 15px;
      line-height: 1.75;
    }

    .feature-small-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
    }

    .mini-card {
      padding: 24px;
      min-height: 171px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .progress-panel {
      display: grid;
      grid-template-columns: .92fr 1.08fr;
      gap: 20px;
      align-items: stretch;
    }

    .progress-card {
      padding: 28px;
      overflow: hidden;
      background:
        linear-gradient(135deg, #fff, #F1F7FF);
    }

    .task-list {
      display: grid;
      gap: 14px;
      margin-top: 22px;
    }

    .task-item {
      display: grid;
      grid-template-columns: 34px 1fr auto;
      gap: 12px;
      align-items: center;
      padding: 13px;
      border-radius: 16px;
      background: rgba(255, 255, 255, .78);
      border: 1px solid var(--border);
    }

    .task-check {
      width: 34px;
      height: 34px;
      border-radius: 13px;
      display: grid;
      place-items: center;
      color: #fff;
      background: var(--success);
      font-weight: 900;
    }

    .task-item strong {
      font-size: 15px;
      line-height: 1.35;
    }

    .task-item span {
      color: var(--muted);
      font-size: 12px;
      white-space: nowrap;
    }

    .meter {
      height: 12px;
      border-radius: 999px;
      background: #E8F0FA;
      overflow: hidden;
      margin-top: 18px;
    }

    .meter > i {
      display: block;
      width: 72%;
      height: 100%;
      border-radius: inherit;
      background: linear-gradient(90deg, var(--primary), #75B6FF);
    }

    .timeline {
      padding: 28px;
    }

    .timeline-list {
      display: grid;
      gap: 0;
      margin-top: 20px;
    }

    .timeline-item {
      position: relative;
      display: grid;
      grid-template-columns: 86px 1fr;
      gap: 18px;
      padding: 0 0 24px;
    }

    .timeline-item:last-child {
      padding-bottom: 0;
    }

    .timeline-item::before {
      content: "";
      position: absolute;
      left: 77px;
      top: 12px;
      bottom: -2px;
      width: 1px;
      background: var(--border);
    }

    .timeline-item:last-child::before {
      display: none;
    }

    .timeline-time {
      color: var(--primary);
      font-weight: 850;
      font-size: 13px;
    }

    .timeline-body {
      position: relative;
      padding-left: 18px;
    }

    .timeline-body::before {
      content: "";
      position: absolute;
      left: -14px;
      top: 8px;
      width: 11px;
      height: 11px;
      border-radius: 999px;
      background: var(--primary);
      box-shadow: 0 0 0 6px rgba(47, 111, 237, .10);
    }

    .timeline-body h3 {
      margin: 0;
      font-size: 16px;
      font-weight: 820;
      line-height: 1.4;
    }

    .timeline-body p {
      margin: 5px 0 0;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.7;
    }

    .bubble-wall {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 18px;
    }

    .bubble {
      position: relative;
      padding: 24px;
      border-radius: 24px 24px 24px 8px;
      background: #fff;
      border: 1px solid var(--border);
      box-shadow: var(--shadow);
    }

    .bubble::after {
      content: "";
      position: absolute;
      left: 22px;
      bottom: -10px;
      width: 18px;
      height: 18px;
      background: #fff;
      border-right: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
      transform: rotate(45deg);
    }

    .bubble p {
      margin: 0;
      color: #42526A;
      font-size: 15px;
      line-height: 1.78;
    }

    .bubble-meta {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-top: 16px;
      color: var(--muted);
      font-size: 13px;
      font-weight: 700;
    }

    .avatar-dot {
      width: 30px;
      height: 30px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary-50), #D8E9FF);
      border: 1px solid rgba(47, 111, 237, .16);
    }

    .news-layout {
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 22px;
      align-items: start;
    }

    .news-list {
      padding: 12px;
    }

    .news-item {
      display: grid;
      grid-template-columns: auto 1fr auto;
      gap: 14px;
      align-items: center;
      padding: 17px 14px;
      border-radius: 16px;
      border-bottom: 1px solid var(--border);
      transition: var(--ease);
    }

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

    .news-item:hover {
      background: var(--primary-25);
      transform: translateX(2px);
    }

    .news-date {
      min-width: 58px;
      color: var(--primary);
      font-weight: 850;
      font-size: 13px;
    }

    .news-title {
      margin: 0;
      font-size: 16px;
      font-weight: 780;
      line-height: 1.45;
    }

    .news-summary {
      margin: 4px 0 0;
      color: var(--muted);
      font-size: 13px;
      line-height: 1.55;
    }

    .recommend {
      padding: 26px;
      background:
        linear-gradient(180deg, #fff, #F8FBFF);
    }

    .recommend-list {
      display: grid;
      gap: 12px;
      margin-top: 18px;
    }

    .recommend-link {
      display: flex;
      justify-content: space-between;
      gap: 14px;
      padding: 14px;
      border-radius: 16px;
      background: #fff;
      border: 1px solid var(--border);
      color: #334155;
      font-weight: 750;
      transition: var(--ease);
    }

    .recommend-link:hover {
      background: var(--primary-50);
      border-color: rgba(47, 111, 237, .18);
      color: var(--primary);
    }

    .guide-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 16px;
    }

    .guide-card {
      padding: 22px;
      background: #fff;
      border: 1px solid var(--border);
      border-radius: 22px;
      box-shadow: 0 10px 28px rgba(30, 64, 120, .06);
      transition: var(--ease);
    }

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

    .guide-num {
      width: 38px;
      height: 38px;
      display: grid;
      place-items: center;
      border-radius: 14px;
      color: var(--primary);
      background: var(--primary-50);
      font-weight: 900;
      margin-bottom: 14px;
    }

    .guide-card h3 {
      margin: 0 0 8px;
      font-size: 17px;
      font-weight: 820;
    }

    .guide-card p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.72;
    }

    .faq-wrap {
      display: grid;
      grid-template-columns: .72fr 1.28fr;
      gap: 22px;
      align-items: start;
    }

    .accordion {
      display: grid;
      gap: 12px;
    }

    .accordion-item {
      border: 1px solid var(--border) !important;
      border-radius: 18px !important;
      overflow: hidden;
      box-shadow: 0 10px 26px rgba(30, 64, 120, .06);
      background: #fff;
    }

    .accordion-button {
      padding: 18px 20px;
      font-weight: 800;
      color: var(--text);
      background: #fff;
      box-shadow: none !important;
      line-height: 1.5;
    }

    .accordion-button:not(.collapsed) {
      color: var(--primary);
      background: var(--primary-25);
    }

    .accordion-button:focus {
      border-color: transparent;
      box-shadow: 0 0 0 4px rgba(47, 111, 237, .10) !important;
    }

    .accordion-body {
      padding: 0 20px 20px;
      color: var(--muted);
      font-size: 15px;
      line-height: 1.82;
      background: #fff;
    }

    .subscribe {
      position: relative;
      overflow: hidden;
      padding: 30px;
      border-radius: 28px;
      background:
        linear-gradient(135deg, #FFFFFF, #F1F7FF 62%, #E8F3FF);
      border: 1px solid var(--border);
      box-shadow: var(--shadow);
    }

    .subscribe::after {
      content: "";
      position: absolute;
      right: -52px;
      top: -60px;
      width: 220px;
      height: 220px;
      border-radius: 50%;
      background: rgba(47, 111, 237, .09);
    }

    .subscribe-grid {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: 1fr .85fr;
      gap: 26px;
      align-items: center;
    }

    .subscribe-form {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 12px;
      margin-top: 22px;
    }

    .form-control {
      border-radius: 14px;
      border: 1px solid var(--border);
      padding: 13px 15px;
      color: var(--text);
      background: #fff;
      transition: var(--ease);
    }

    .form-control:focus {
      border-color: rgba(47, 111, 237, .55);
      box-shadow: 0 0 0 4px rgba(47, 111, 237, .10);
    }

    .form-check {
      margin-top: 13px;
      color: var(--muted);
      font-size: 13px;
      line-height: 1.6;
    }

    .form-check-input {
      border-color: #C9D8EA;
    }

    .form-check-input:checked {
      background-color: var(--primary);
      border-color: var(--primary);
    }

    .entry-checklist {
      display: grid;
      gap: 12px;
      padding: 20px;
      border-radius: 22px;
      background: rgba(255, 255, 255, .82);
      border: 1px solid var(--border);
    }

    .entry-checklist a {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 12px;
      padding: 12px 14px;
      border-radius: 14px;
      background: #fff;
      border: 1px solid var(--border);
      font-weight: 760;
      color: #334155;
      transition: var(--ease);
    }

    .entry-checklist a:hover {
      color: var(--primary);
      background: var(--primary-50);
      border-color: rgba(47, 111, 237, .18);
    }

    .site-footer {
      padding: 28px 0 42px;
    }

    .footer-card {
      padding: 26px;
      border-radius: 28px;
      background: #fff;
      border: 1px solid var(--border);
      box-shadow: 0 10px 28px rgba(30, 64, 120, .05);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.1fr .9fr .9fr;
      gap: 24px;
      align-items: start;
    }

    .footer-logo {
      display: flex;
      gap: 12px;
      align-items: center;
      font-weight: 850;
      margin-bottom: 10px;
    }

    .footer-logo .brand-icon {
      width: 38px;
      height: 38px;
      border-radius: 14px;
    }

    .footer-text {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.75;
    }

    .footer-title {
      margin: 0 0 12px;
      font-size: 15px;
      font-weight: 850;
    }

    .footer-links {
      display: grid;
      gap: 8px;
    }

    .footer-links a {
      color: var(--muted);
      font-size: 14px;
    }

    .footer-links a:hover {
      color: var(--primary);
      transform: translateX(2px);
    }

    .copyright {
      margin-top: 20px;
      padding-top: 18px;
      border-top: 1px solid var(--border);
      color: var(--muted-2);
      font-size: 13px;
      display: flex;
      flex-wrap: wrap;
      gap: 8px 16px;
      justify-content: space-between;
    }

    @media (max-width: 1199.98px) {
      :root {
        --sidebar: 232px;
      }

      .desktop-shell {
        width: var(--sidebar);
        padding-left: 14px;
        padding-right: 14px;
      }

      .content-wrap {
        width: min(1040px, calc(100% - 38px));
      }

      .feature-small-grid,
      .guide-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .burst {
        right: 22px;
        width: 98px;
        height: 98px;
        font-size: 14px;
      }
    }

    @media (max-width: 991.98px) {
      .desktop-shell {
        display: none;
      }

      .mobile-topbar {
        display: flex;
        align-items: center;
        justify-content: space-between;
      }

      .page {
        margin-left: 0;
      }

      .content-wrap {
        width: min(100% - 28px, 900px);
      }

      .hero-grid,
      .story-wrap,
      .feature-layout,
      .progress-panel,
      .news-layout,
      .faq-wrap,
      .subscribe-grid,
      .footer-grid {
        grid-template-columns: 1fr;
      }

      .hero {
        min-height: auto;
      }

      .hero-board {
        margin-top: 14px;
      }

      .bubble-wall {
        grid-template-columns: 1fr;
      }

      .section {
        padding: 34px 0;
      }

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

    @media (max-width: 767.98px) {
      .hero {
        border-radius: 22px;
        padding: 24px;
      }

      .burst {
        position: static;
        margin: 18px 0 0 auto;
        width: 86px;
        height: 86px;
        font-size: 13px;
      }

      .hero h1 {
        margin-top: 18px;
      }

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

      .hero-actions {
        flex-direction: column;
      }

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

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

      .feature-small-grid,
      .guide-grid {
        grid-template-columns: 1fr;
      }

      .subscribe-form {
        grid-template-columns: 1fr;
      }

      .task-item {
        grid-template-columns: 34px 1fr;
      }

      .task-item span {
        grid-column: 2;
      }

      .news-item {
        grid-template-columns: 1fr;
        gap: 6px;
      }

      .timeline-item {
        grid-template-columns: 68px 1fr;
      }

      .timeline-item::before {
        left: 61px;
      }

      .footer-card,
      .subscribe,
      .soft-card {
        border-radius: 20px;
      }

      .mobile-topbar .brand-sub {
        display: none;
      }
    }

    @media (max-width: 520px) {
      .content-wrap {
        width: min(100% - 22px, 480px);
      }

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

      .brand-icon {
        width: 38px;
        height: 38px;
        border-radius: 13px;
      }

      .section-title {
        font-size: 23px;
      }

      .section-desc {
        font-size: 14px;
      }

      .entry-panel,
      .story-intro,
      .feature-big,
      .progress-card,
      .timeline,
      .recommend,
      .subscribe,
      .footer-card {
        padding: 20px;
      }
    }

/* roulang page: category2 */
:root{
      --primary:#2F6FED;
      --primary-dark:#1F5ED8;
      --primary-soft:#EAF3FF;
      --primary-soft-2:#F0F7FF;
      --bg:#F7FAFE;
      --surface:#FFFFFF;
      --surface-blue:#F5F9FF;
      --text:#172033;
      --muted:#64748B;
      --muted-2:#8A9AB0;
      --border:#E5EDF6;
      --warning:#F59E0B;
      --success:#18A058;
      --shadow:0 12px 32px rgba(30,64,120,.08);
      --shadow-hover:0 18px 42px rgba(30,64,120,.13);
      --radius:22px;
      --radius-md:16px;
      --radius-sm:12px;
      --sidebar:252px;
      --ease:all .22s ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 92% 8%, rgba(47,111,237,.10), transparent 28%),
        radial-gradient(circle at 18% 0%, rgba(73,168,255,.08), transparent 28%),
        var(--bg);
      line-height:1.78;
      font-size:16px;
      -webkit-font-smoothing:antialiased;
      text-rendering:optimizeLegibility;
    }
    a{color:inherit;text-decoration:none;transition:var(--ease)}
    a:hover{color:var(--primary)}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    :focus-visible{
      outline:3px solid rgba(47,111,237,.22);
      outline-offset:3px;
      border-radius:10px;
    }
    .desktop-sidebar{
      position:fixed;
      inset:0 auto 0 0;
      width:var(--sidebar);
      background:rgba(255,255,255,.94);
      border-right:1px solid var(--border);
      box-shadow:8px 0 26px rgba(30,64,120,.04);
      z-index:1030;
      display:flex;
      flex-direction:column;
      padding:24px 18px;
      backdrop-filter:saturate(160%) blur(12px);
    }
    .brand-link{
      display:flex;
      align-items:center;
      gap:12px;
      padding:8px 8px 18px;
      margin-bottom:10px;
      color:var(--text);
    }
    .brand-icon{
      width:38px;
      height:38px;
      border-radius:14px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      color:#fff;
      font-weight:800;
      background:linear-gradient(135deg,var(--primary),#62A5FF);
      box-shadow:0 10px 24px rgba(47,111,237,.22);
      flex:0 0 auto;
    }
    .brand-text{
      display:flex;
      flex-direction:column;
      line-height:1.25;
      font-weight:800;
      letter-spacing:-.02em;
    }
    .brand-sub{
      margin-top:3px;
      font-size:12px;
      font-weight:600;
      color:var(--muted);
      letter-spacing:0;
    }
    .side-nav{
      display:flex;
      flex-direction:column;
      gap:8px;
      padding:10px 0;
    }
    .nav-link-custom{
      position:relative;
      display:flex;
      align-items:center;
      gap:11px;
      min-height:48px;
      padding:10px 12px;
      border-radius:14px;
      color:#40516A;
      font-weight:700;
      border:1px solid transparent;
    }
    .nav-link-custom .nav-ico{
      width:28px;
      height:28px;
      border-radius:10px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      background:var(--primary-soft);
      color:var(--primary);
      font-size:13px;
      font-weight:800;
      flex:0 0 auto;
    }
    .nav-link-custom:hover{
      background:var(--primary-soft-2);
      border-color:#D9E9FF;
      color:var(--primary);
      transform:translateX(2px);
    }
    .nav-link-custom.active{
      background:var(--primary-soft);
      color:var(--primary);
      border-color:#D7E8FF;
      box-shadow:0 8px 22px rgba(47,111,237,.08);
    }
    .nav-link-custom.active::before{
      content:"";
      position:absolute;
      left:-18px;
      top:12px;
      width:3px;
      height:24px;
      border-radius:999px;
      background:var(--primary);
    }
    .side-note{
      margin-top:auto;
      padding:16px;
      border:1px solid rgba(245,158,11,.24);
      border-radius:18px;
      background:linear-gradient(180deg,#FFF9EC,#FFFFFF);
      color:#6B4A10;
      box-shadow:0 12px 28px rgba(245,158,11,.08);
    }
    .side-note strong{
      display:block;
      margin-bottom:6px;
      color:#8A5B00;
      font-size:14px;
    }
    .side-note p{
      margin:0;
      font-size:13px;
      line-height:1.65;
    }
    .mobile-topbar{
      display:none;
      position:sticky;
      top:0;
      z-index:1040;
      background:rgba(255,255,255,.94);
      border-bottom:1px solid var(--border);
      backdrop-filter:saturate(160%) blur(12px);
      padding:10px 14px;
    }
    .menu-btn{
      border:1px solid var(--border);
      background:#fff;
      color:var(--primary);
      border-radius:12px;
      padding:8px 12px;
      font-weight:800;
      box-shadow:0 8px 18px rgba(30,64,120,.06);
    }
    .main-shell{
      margin-left:var(--sidebar);
      min-height:100vh;
    }
    .content-wrap{
      width:min(100%,1220px);
      margin:0 auto;
      padding:0 34px;
    }
    main.content-wrap{
      padding-top:34px;
      padding-bottom:42px;
    }
    .breadcrumb-card{
      background:rgba(255,255,255,.72);
      border:1px solid var(--border);
      border-radius:999px;
      padding:8px 14px;
      display:inline-flex;
      margin-bottom:18px;
      box-shadow:0 8px 24px rgba(30,64,120,.04);
    }
    .breadcrumb{
      margin:0;
      --bs-breadcrumb-divider-color:var(--muted-2);
      font-size:13px;
      font-weight:700;
    }
    .breadcrumb a{color:var(--muted)}
    .breadcrumb .active{color:var(--primary)}
    .page-hero{
      position:relative;
      overflow:hidden;
      border-radius:28px;
      background:
        linear-gradient(135deg,rgba(255,255,255,.98),rgba(245,249,255,.96)),
        radial-gradient(circle at 86% 18%, rgba(47,111,237,.13), transparent 32%);
      border:1px solid var(--border);
      box-shadow:var(--shadow);
      padding:34px;
      margin-bottom:26px;
    }
    .page-hero::after{
      content:"";
      position:absolute;
      right:-70px;
      top:-80px;
      width:260px;
      height:260px;
      border-radius:50%;
      background:rgba(47,111,237,.08);
      pointer-events:none;
    }
    .hero-kicker{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      background:var(--primary-soft);
      color:var(--primary);
      border:1px solid #D9E9FF;
      border-radius:999px;
      font-size:13px;
      font-weight:800;
      margin-bottom:14px;
    }
    h1{
      max-width:820px;
      margin:0;
      font-size:38px;
      line-height:1.22;
      font-weight:800;
      letter-spacing:-.04em;
      color:var(--text);
    }
    .hero-desc{
      max-width:820px;
      margin:16px 0 0;
      color:var(--muted);
      font-size:16px;
      line-height:1.9;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:24px;
    }
    .btn-custom{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:46px;
      padding:11px 18px;
      border-radius:14px;
      font-weight:800;
      border:1px solid transparent;
      transition:var(--ease);
    }
    .btn-primary-custom{
      color:#fff;
      background:linear-gradient(135deg,var(--primary),#5A9BFF);
      box-shadow:0 12px 24px rgba(47,111,237,.22);
    }
    .btn-primary-custom:hover{
      color:#fff;
      transform:translateY(-2px);
      background:linear-gradient(135deg,var(--primary-dark),var(--primary));
      box-shadow:0 16px 30px rgba(47,111,237,.28);
    }
    .btn-secondary-custom{
      color:var(--primary);
      background:#fff;
      border-color:#CFE3FF;
      box-shadow:0 8px 20px rgba(30,64,120,.05);
    }
    .btn-secondary-custom:hover{
      background:var(--primary-soft);
      border-color:#BBD8FF;
      transform:translateY(-2px);
    }
    .section{
      margin-top:28px;
      margin-bottom:54px;
    }
    .section-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:20px;
      margin-bottom:20px;
    }
    .section-title{
      margin:0;
      font-size:26px;
      line-height:1.3;
      font-weight:800;
      letter-spacing:-.025em;
    }
    .section-note{
      margin:8px 0 0;
      color:var(--muted);
      max-width:700px;
      line-height:1.8;
    }
    .info-card,.article-card,.sticky-card,.step-card,.cta-card,.footer-card{
      background:rgba(255,255,255,.96);
      border:1px solid var(--border);
      border-radius:var(--radius);
      box-shadow:var(--shadow);
    }
    .info-card{
      padding:24px;
      height:100%;
      transition:var(--ease);
    }
    .info-card:hover,.article-card:hover,.step-card:hover{
      transform:translateY(-3px);
      box-shadow:var(--shadow-hover);
      border-color:#D2E5FF;
    }
    .badge-soft{
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:6px 11px;
      border-radius:999px;
      background:var(--primary-soft);
      color:var(--primary);
      border:1px solid #D8E9FF;
      font-size:13px;
      font-weight:800;
      line-height:1;
    }
    .badge-warn{
      background:#FFF7E6;
      color:#9A6700;
      border-color:#FFE0A3;
    }
    .info-card h2,.info-card h3,.article-card h2,.article-card h3,.sticky-card h2,.sticky-card h3,.step-card h3{
      margin:14px 0 8px;
      font-size:19px;
      font-weight:800;
      line-height:1.35;
    }
    .info-card p,.article-card p,.sticky-card p,.step-card p{
      margin:0;
      color:var(--muted);
      line-height:1.82;
    }
    .main-layout{
      align-items:flex-start;
    }
    .reading-card{
      background:#fff;
      border:1px solid var(--border);
      border-radius:26px;
      box-shadow:var(--shadow);
      padding:30px;
    }
    .chapter{
      padding:22px 0;
      border-bottom:1px solid var(--border);
    }
    .chapter:first-child{padding-top:0}
    .chapter:last-child{border-bottom:0;padding-bottom:0}
    .chapter-num{
      width:34px;
      height:34px;
      border-radius:13px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      background:var(--primary-soft);
      color:var(--primary);
      font-weight:900;
      margin-bottom:12px;
    }
    .chapter h2{
      margin:0 0 10px;
      font-size:22px;
      line-height:1.38;
      font-weight:800;
    }
    .chapter p{
      color:var(--muted);
      margin:0 0 12px;
      line-height:1.9;
    }
    .notice-box{
      margin-top:14px;
      padding:15px 16px;
      border-radius:16px;
      background:var(--primary-soft-2);
      border:1px solid #DCEBFF;
      color:#40516A;
      font-size:14px;
      line-height:1.75;
    }
    .warning-box{
      margin-top:14px;
      padding:15px 16px;
      border-radius:16px;
      background:#FFF8E9;
      border:1px solid #FFE0A3;
      color:#6B4A10;
      font-size:14px;
      line-height:1.75;
    }
    .sticky-wrap{
      position:sticky;
      top:24px;
      display:flex;
      flex-direction:column;
      gap:16px;
    }
    .sticky-card{
      padding:20px;
    }
    .quick-list{
      display:grid;
      gap:10px;
      margin-top:12px;
    }
    .quick-list a,.quick-list div{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      padding:12px 13px;
      border-radius:14px;
      background:var(--surface-blue);
      border:1px solid var(--border);
      color:#40516A;
      font-weight:750;
      font-size:14px;
    }
    .quick-list a:hover{
      color:var(--primary);
      background:var(--primary-soft);
      transform:translateX(2px);
    }
    .step-row{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:16px;
      position:relative;
    }
    .step-card{
      position:relative;
      padding:22px;
      overflow:hidden;
      transition:var(--ease);
    }
    .step-card::before{
      content:"";
      position:absolute;
      left:22px;
      top:0;
      width:1px;
      height:18px;
      background:#CFE3FF;
    }
    .step-index{
      width:40px;
      height:40px;
      border-radius:15px;
      display:flex;
      align-items:center;
      justify-content:center;
      color:#fff;
      background:linear-gradient(135deg,var(--primary),#72AEFF);
      font-weight:900;
      box-shadow:0 10px 20px rgba(47,111,237,.18);
    }
    .article-grid{
      display:grid;
      grid-template-columns:1.15fr .85fr;
      gap:18px;
    }
    .article-card{
      padding:24px;
      transition:var(--ease);
      min-height:220px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
    }
    .article-card.featured{
      min-height:300px;
      background:
        linear-gradient(180deg,#fff,rgba(234,243,255,.78));
    }
    .card-link{
      margin-top:18px;
      display:inline-flex;
      align-items:center;
      gap:7px;
      color:var(--primary);
      font-weight:900;
    }
    .card-link:hover{
      gap:11px;
      text-decoration:underline;
      text-underline-offset:4px;
    }
    .mini-stack{
      display:grid;
      gap:18px;
    }
    .accordion{
      display:grid;
      gap:12px;
    }
    .accordion-item{
      border:1px solid var(--border)!important;
      border-radius:18px!important;
      overflow:hidden;
      box-shadow:0 10px 24px rgba(30,64,120,.05);
      background:#fff;
    }
    .accordion-button{
      padding:18px 20px;
      font-weight:850;
      color:var(--text);
      background:#fff;
      box-shadow:none!important;
      line-height:1.55;
    }
    .accordion-button:not(.collapsed){
      color:var(--primary);
      background:var(--primary-soft-2);
    }
    .accordion-button::after{
      width:18px;
      height:18px;
      background-size:18px;
      filter:sepia(1) hue-rotate(175deg) saturate(4);
    }
    .accordion-body{
      padding:0 20px 20px;
      color:var(--muted);
      line-height:1.86;
    }
    .cta-card{
      position:relative;
      overflow:hidden;
      padding:30px;
      background:
        radial-gradient(circle at 92% 20%, rgba(47,111,237,.12), transparent 28%),
        linear-gradient(135deg,#FFFFFF,#F4F9FF);
    }
    .cta-card::before{
      content:"";
      position:absolute;
      left:0;
      top:28px;
      width:4px;
      height:64px;
      border-radius:999px;
      background:var(--primary);
    }
    .form-control{
      border-radius:14px;
      border:1px solid var(--border);
      padding:12px 14px;
      color:var(--text);
      background:#fff;
      min-height:48px;
      box-shadow:none;
    }
    .form-control:focus{
      border-color:var(--primary);
      box-shadow:0 0 0 .22rem rgba(47,111,237,.12);
    }
    .form-check-input{
      border-color:#C9DAEE;
      cursor:pointer;
    }
    .form-check-input:checked{
      background-color:var(--primary);
      border-color:var(--primary);
    }
    .form-text-custom{
      margin-top:10px;
      color:var(--muted);
      font-size:13px;
      line-height:1.65;
    }
    .site-footer{
      margin-left:var(--sidebar);
      padding:18px 0 36px;
    }
    .footer-card{
      padding:28px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.35fr .85fr 1fr;
      gap:26px;
    }
    .footer-logo{
      display:flex;
      align-items:center;
      gap:10px;
      font-weight:900;
      color:var(--text);
      margin-bottom:12px;
    }
    .footer-text{
      color:var(--muted);
      margin:0;
      line-height:1.8;
      font-size:14px;
    }
    .footer-title{
      margin:0 0 12px;
      font-size:16px;
      font-weight:900;
    }
    .footer-links{
      display:grid;
      gap:9px;
    }
    .footer-links a{
      color:var(--muted);
      font-weight:700;
      font-size:14px;
    }
    .footer-links a:hover{
      color:var(--primary);
      transform:translateX(2px);
    }
    .copyright{
      margin-top:22px;
      padding-top:18px;
      border-top:1px solid var(--border);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:14px;
      color:var(--muted-2);
      font-size:13px;
      flex-wrap:wrap;
    }
    .offcanvas{
      border-right:1px solid var(--border)!important;
      background:#fff;
    }
    .offcanvas-header{
      border-bottom:1px solid var(--border);
    }
    .offcanvas-title{
      display:flex;
      align-items:center;
      gap:10px;
      font-weight:900;
    }
    @media (max-width:1199.98px){
      :root{--sidebar:226px}
      .content-wrap{padding:0 26px}
      h1{font-size:34px}
      .step-row{grid-template-columns:repeat(2,1fr)}
    }
    @media (max-width:991.98px){
      .desktop-sidebar{display:none}
      .mobile-topbar{display:flex;align-items:center;justify-content:space-between}
      .main-shell,.site-footer{margin-left:0}
      main.content-wrap{padding-top:24px}
      .content-wrap{padding:0 18px}
      .page-hero{padding:26px;border-radius:24px}
      .sticky-wrap{position:static;margin-top:18px}
      .article-grid{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width:767.98px){
      body{font-size:15px}
      h1{font-size:29px;letter-spacing:-.025em}
      .section{margin-bottom:42px}
      .section-head{display:block}
      .section-title{font-size:23px}
      .page-hero{padding:22px}
      .hero-actions{flex-direction:column}
      .btn-custom{width:100%}
      .reading-card{padding:22px;border-radius:20px}
      .step-row{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr}
      .copyright{display:block}
      .copyright span{display:block;margin-top:8px}
    }
    @media (max-width:575.98px){
      .content-wrap{padding:0 14px}
      .brand-text{font-size:14px}
      .brand-sub{display:none}
      .page-hero,.info-card,.article-card,.sticky-card,.cta-card,.footer-card{border-radius:16px}
      .breadcrumb-card{border-radius:16px}
      .chapter h2{font-size:20px}
      .footer-card{padding:22px}
    }

/* roulang page: category1 */
:root{
      --primary:#2F6FED;
      --primary-600:#245ED0;
      --primary-50:#EAF3FF;
      --primary-25:#F5F9FF;
      --cyan-50:#EFFAFF;
      --bg:#F7FAFE;
      --surface:#FFFFFF;
      --text:#172033;
      --muted:#64748B;
      --soft:#8AA0B8;
      --border:#E5EDF6;
      --border-strong:#CFE0F4;
      --warning:#F59E0B;
      --warning-bg:#FFF7E6;
      --radius-lg:24px;
      --radius-md:18px;
      --radius-sm:12px;
      --shadow:0 12px 32px rgba(30,64,120,.08);
      --shadow-hover:0 18px 42px rgba(30,64,120,.13);
      --side-width:252px;
      --ease:all .22s ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 78% 5%, rgba(47,111,237,.09), transparent 32%),
        radial-gradient(circle at 22% 28%, rgba(97,202,255,.09), transparent 28%),
        var(--bg);
      line-height:1.8;
      font-size:16px;
      min-height:100vh;
    }
    a{color:inherit;text-decoration:none;transition:var(--ease)}
    a:hover{color:var(--primary)}
    img{max-width:100%;height:auto}
    button,input{font:inherit}
    ::selection{background:rgba(47,111,237,.15)}
    .skip-link{
      position:absolute;
      left:-999px;
      top:12px;
      background:var(--primary);
      color:#fff;
      padding:10px 14px;
      border-radius:10px;
      z-index:2000;
    }
    .skip-link:focus{left:12px;outline:3px solid rgba(47,111,237,.2)}
    .desktop-shell{
      position:fixed;
      inset:0 auto 0 0;
      width:var(--side-width);
      background:rgba(255,255,255,.92);
      backdrop-filter:blur(18px);
      border-right:1px solid var(--border);
      z-index:1040;
      display:flex;
      flex-direction:column;
      padding:22px 18px;
      box-shadow:8px 0 28px rgba(30,64,120,.04);
    }
    .brand{
      display:flex;
      align-items:center;
      gap:10px;
      min-height:46px;
      padding:8px 8px 18px;
      border-bottom:1px solid var(--border);
      margin-bottom:18px;
    }
    .brand-icon{
      width:38px;
      height:38px;
      flex:0 0 38px;
      border-radius:14px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      color:#fff;
      font-weight:800;
      background:linear-gradient(135deg,var(--primary),#6CB7FF);
      box-shadow:0 10px 24px rgba(47,111,237,.22);
    }
    .brand-text{
      display:flex;
      flex-direction:column;
      line-height:1.25;
    }
    .brand-main{
      font-size:15px;
      font-weight:800;
      letter-spacing:-.02em;
      color:var(--text);
    }
    .brand-sub{
      font-size:12px;
      color:var(--muted);
      margin-top:2px;
    }
    .side-nav{
      display:flex;
      flex-direction:column;
      gap:8px;
    }
    .nav-link-custom{
      position:relative;
      display:flex;
      align-items:center;
      gap:12px;
      min-height:46px;
      padding:10px 12px;
      border-radius:14px;
      color:var(--muted);
      font-weight:650;
      font-size:14px;
      border:1px solid transparent;
    }
    .nav-link-custom .nav-ico{
      width:28px;
      height:28px;
      border-radius:10px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      background:var(--primary-50);
      color:var(--primary);
      font-size:13px;
      font-weight:800;
      flex:0 0 28px;
    }
    .nav-link-custom:hover{
      background:var(--primary-25);
      color:var(--primary);
      border-color:var(--border);
      transform:translateX(2px);
    }
    .nav-link-custom.active{
      background:linear-gradient(90deg,rgba(47,111,237,.12),rgba(47,111,237,.05));
      color:var(--primary);
      border-color:rgba(47,111,237,.14);
      box-shadow:0 10px 24px rgba(47,111,237,.08);
    }
    .nav-link-custom.active:before{
      content:"";
      position:absolute;
      left:-18px;
      top:12px;
      bottom:12px;
      width:3px;
      border-radius:0 999px 999px 0;
      background:var(--primary);
    }
    .side-note{
      margin-top:auto;
      padding:16px;
      border-radius:18px;
      background:var(--warning-bg);
      border:1px solid rgba(245,158,11,.25);
      color:#7A4D00;
      font-size:13px;
      line-height:1.65;
    }
    .side-note strong{
      display:block;
      color:#5F3C00;
      margin-bottom:4px;
    }
    .mobile-topbar{
      display:none;
      position:sticky;
      top:0;
      z-index:1030;
      height:64px;
      background:rgba(255,255,255,.94);
      backdrop-filter:blur(16px);
      border-bottom:1px solid var(--border);
      padding:0 16px;
      align-items:center;
      justify-content:space-between;
    }
    .menu-btn{
      width:42px;
      height:42px;
      border-radius:14px;
      border:1px solid var(--border);
      background:#fff;
      color:var(--primary);
      display:inline-flex;
      align-items:center;
      justify-content:center;
      box-shadow:0 8px 20px rgba(30,64,120,.06);
    }
    .menu-btn:hover,.menu-btn:focus{
      border-color:rgba(47,111,237,.35);
      box-shadow:0 0 0 4px rgba(47,111,237,.08);
      outline:none;
    }
    .offcanvas{
      border-right:1px solid var(--border);
      background:#fff;
    }
    .offcanvas-header{
      border-bottom:1px solid var(--border);
      padding:18px;
    }
    .main-area{
      margin-left:var(--side-width);
      min-height:100vh;
    }
    .content-wrap{
      max-width:1220px;
      width:100%;
      margin:0 auto;
      padding:0 34px;
    }
    main.content-wrap{
      padding-top:34px;
      padding-bottom:70px;
    }
    .breadcrumb-wrap{
      margin-bottom:18px;
    }
    .breadcrumb{
      --bs-breadcrumb-divider:"/";
      margin:0;
      padding:0;
      font-size:13px;
      color:var(--muted);
    }
    .breadcrumb a{
      color:var(--muted);
      font-weight:600;
    }
    .breadcrumb a:hover{color:var(--primary)}
    .breadcrumb-item.active{
      color:var(--primary);
      font-weight:700;
    }
    .section{
      margin-top:34px;
    }
    .section-large{
      margin-top:58px;
    }
    .section-kicker{
      display:inline-flex;
      align-items:center;
      gap:8px;
      border:1px solid rgba(47,111,237,.18);
      background:var(--primary-50);
      color:var(--primary);
      padding:6px 12px;
      border-radius:999px;
      font-size:13px;
      font-weight:800;
      margin-bottom:14px;
    }
    .section-kicker:before{
      content:"";
      width:7px;
      height:7px;
      border-radius:50%;
      background:var(--primary);
      box-shadow:0 0 0 4px rgba(47,111,237,.13);
    }
    .page-head{
      position:relative;
      overflow:hidden;
      background:
        radial-gradient(circle at 84% 16%, rgba(47,111,237,.13), transparent 30%),
        linear-gradient(135deg,#fff 0%,#F8FBFF 100%);
      border:1px solid var(--border);
      border-radius:var(--radius-lg);
      padding:34px;
      box-shadow:var(--shadow);
    }
    .page-head:after{
      content:"";
      position:absolute;
      width:260px;
      height:260px;
      right:-120px;
      bottom:-140px;
      border-radius:50%;
      border:42px solid rgba(47,111,237,.06);
    }
    .page-head-inner{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns:minmax(0,1.15fr) minmax(280px,.85fr);
      gap:28px;
      align-items:center;
    }
    h1{
      margin:0;
      font-weight:800;
      letter-spacing:-.035em;
      line-height:1.22;
      font-size:40px;
      color:var(--text);
    }
    .lead{
      margin:16px 0 0;
      color:var(--muted);
      font-size:16px;
      line-height:1.85;
      max-width:720px;
    }
    .head-actions{
      display:flex;
      gap:12px;
      flex-wrap:wrap;
      margin-top:24px;
    }
    .btn-custom{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:46px;
      padding:11px 18px;
      border-radius:14px;
      border:1px solid transparent;
      font-weight:800;
      font-size:14px;
      transition:var(--ease);
      white-space:nowrap;
    }
    .btn-primary-custom{
      color:#fff;
      background:var(--primary);
      box-shadow:0 12px 24px rgba(47,111,237,.22);
    }
    .btn-primary-custom:hover,.btn-primary-custom:focus{
      color:#fff;
      background:var(--primary-600);
      transform:translateY(-2px);
      box-shadow:0 16px 28px rgba(47,111,237,.28);
      outline:none;
    }
    .btn-secondary-custom{
      color:var(--primary);
      background:#fff;
      border-color:var(--border-strong);
    }
    .btn-secondary-custom:hover,.btn-secondary-custom:focus{
      background:var(--primary-50);
      color:var(--primary-600);
      border-color:rgba(47,111,237,.3);
      transform:translateY(-2px);
      outline:none;
    }
    .abstract-panel{
      position:relative;
      padding:22px;
      border-radius:22px;
      background:#fff;
      border:1px solid var(--border);
      box-shadow:0 16px 36px rgba(30,64,120,.08);
    }
    .panel-title{
      font-size:15px;
      font-weight:800;
      color:var(--text);
      margin-bottom:14px;
      display:flex;
      align-items:center;
      gap:8px;
    }
    .panel-title span{
      width:28px;
      height:28px;
      border-radius:10px;
      background:var(--primary-50);
      color:var(--primary);
      display:inline-flex;
      align-items:center;
      justify-content:center;
      font-weight:900;
    }
    .check-list{
      display:grid;
      gap:10px;
      margin:0;
      padding:0;
      list-style:none;
    }
    .check-list li{
      display:flex;
      gap:10px;
      align-items:flex-start;
      padding:11px 12px;
      border-radius:14px;
      background:var(--primary-25);
      color:var(--muted);
      font-size:14px;
      line-height:1.55;
    }
    .check-list li:before{
      content:"✓";
      width:22px;
      height:22px;
      border-radius:50%;
      background:rgba(47,111,237,.12);
      color:var(--primary);
      display:inline-flex;
      align-items:center;
      justify-content:center;
      font-weight:900;
      flex:0 0 22px;
      margin-top:1px;
    }
    .overview-grid{
      display:grid;
      grid-template-columns:1fr 1fr 1fr;
      gap:16px;
    }
    .overview-card,.article-card,.flow-card,.notice-card,.cta-card,.filter-bar,.faq-shell{
      background:var(--surface);
      border:1px solid var(--border);
      border-radius:var(--radius-md);
      box-shadow:var(--shadow);
    }
    .overview-card{
      padding:22px;
      transition:var(--ease);
    }
    .overview-card:hover{
      transform:translateY(-3px);
      box-shadow:var(--shadow-hover);
      border-color:rgba(47,111,237,.22);
    }
    .overview-icon{
      width:42px;
      height:42px;
      border-radius:15px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      background:var(--primary-50);
      color:var(--primary);
      font-weight:900;
      margin-bottom:16px;
    }
    .overview-card h2{
      font-size:19px;
      font-weight:800;
      margin:0 0 8px;
      letter-spacing:-.02em;
    }
    .overview-card p{
      margin:0;
      color:var(--muted);
      font-size:14px;
      line-height:1.75;
    }
    .filter-bar{
      padding:14px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:14px;
      flex-wrap:wrap;
      margin-bottom:18px;
    }
    .filter-tabs{
      display:flex;
      gap:10px;
      flex-wrap:wrap;
    }
    .filter-tab{
      display:inline-flex;
      align-items:center;
      min-height:36px;
      padding:8px 13px;
      border-radius:999px;
      border:1px solid var(--border);
      color:var(--muted);
      background:#fff;
      font-size:13px;
      font-weight:800;
    }
    .filter-tab.active{
      background:var(--primary);
      border-color:var(--primary);
      color:#fff;
      box-shadow:0 10px 18px rgba(47,111,237,.18);
    }
    .filter-tab:hover{
      border-color:rgba(47,111,237,.3);
      color:var(--primary);
      background:var(--primary-50);
    }
    .filter-tab.active:hover{color:#fff;background:var(--primary-600)}
    .filter-hint{
      color:var(--soft);
      font-size:13px;
      font-weight:650;
    }
    .article-layout{
      display:grid;
      grid-template-columns:minmax(0,1.05fr) minmax(320px,.95fr);
      gap:18px;
      align-items:stretch;
    }
    .article-stack{
      display:grid;
      gap:18px;
    }
    .article-card{
      position:relative;
      overflow:hidden;
      padding:26px;
      transition:var(--ease);
    }
    .article-card.large{
      min-height:100%;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      background:
        linear-gradient(180deg,#fff 0%,#F8FBFF 100%);
    }
    .article-card:hover{
      transform:translateY(-3px);
      box-shadow:var(--shadow-hover);
      border-color:rgba(47,111,237,.24);
    }
    .card-cover{
      height:138px;
      border-radius:18px;
      background:
        radial-gradient(circle at 30% 30%, rgba(108,183,255,.55), transparent 35%),
        linear-gradient(135deg,#EAF3FF,#FFFFFF);
      border:1px solid var(--border);
      margin-bottom:20px;
      position:relative;
      overflow:hidden;
    }
    .card-cover:before{
      content:"";
      position:absolute;
      inset:22px;
      border-radius:16px;
      border:1px dashed rgba(47,111,237,.28);
    }
    .card-cover:after{
      content:"ENTRY";
      position:absolute;
      right:22px;
      bottom:18px;
      color:rgba(47,111,237,.24);
      font-size:34px;
      font-weight:900;
      letter-spacing:.08em;
    }
    .badge-soft{
      display:inline-flex;
      align-items:center;
      gap:6px;
      border-radius:999px;
      padding:6px 10px;
      background:var(--primary-50);
      color:var(--primary);
      font-size:12px;
      font-weight:900;
      margin-bottom:12px;
    }
    .article-card h2,.article-card h3{
      margin:0 0 10px;
      font-size:22px;
      line-height:1.35;
      font-weight:850;
      letter-spacing:-.02em;
      transition:var(--ease);
    }
    .article-card h3{font-size:18px}
    .article-card:hover h2,.article-card:hover h3{color:var(--primary)}
    .article-card p{
      color:var(--muted);
      margin:0;
      font-size:14px;
      line-height:1.75;
    }
    .meta-row{
      display:flex;
      align-items:center;
      gap:12px;
      flex-wrap:wrap;
      margin-top:18px;
      color:var(--soft);
      font-size:13px;
      font-weight:650;
    }
    .text-link{
      color:var(--primary);
      font-weight:850;
      display:inline-flex;
      align-items:center;
      gap:6px;
      margin-top:18px;
      font-size:14px;
    }
    .text-link span{transition:var(--ease)}
    .text-link:hover span{transform:translateX(3px)}
    .notice-card{
      padding:24px;
      background:linear-gradient(135deg,#fff,#F9FCFF);
    }
    .notice-grid{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:16px;
    }
    .notice-item{
      padding:18px;
      border-radius:18px;
      border:1px solid var(--border);
      background:#fff;
    }
    .notice-item strong{
      display:block;
      color:var(--text);
      font-size:16px;
      margin-bottom:6px;
    }
    .notice-item p{
      margin:0;
      color:var(--muted);
      font-size:14px;
    }
    .flow-card{
      padding:28px;
    }
    .section-title-row{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:18px;
      margin-bottom:20px;
    }
    .section-title-row h2{
      margin:0;
      font-size:28px;
      line-height:1.3;
      font-weight:850;
      letter-spacing:-.03em;
    }
    .section-title-row p{
      margin:0;
      color:var(--muted);
      max-width:520px;
      font-size:14px;
    }
    .timeline{
      position:relative;
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:14px;
    }
    .step{
      position:relative;
      padding:20px;
      border-radius:18px;
      border:1px solid var(--border);
      background:var(--primary-25);
      min-height:164px;
    }
    .step-number{
      width:34px;
      height:34px;
      border-radius:13px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      background:var(--primary);
      color:#fff;
      font-weight:900;
      box-shadow:0 10px 22px rgba(47,111,237,.2);
      margin-bottom:14px;
    }
    .step h3{
      margin:0 0 8px;
      font-size:17px;
      font-weight:850;
    }
    .step p{
      margin:0;
      color:var(--muted);
      font-size:14px;
      line-height:1.65;
    }
    .faq-shell{
      padding:10px;
    }
    .accordion{
      --bs-accordion-border-width:0;
      --bs-accordion-border-radius:18px;
      --bs-accordion-inner-border-radius:18px;
      --bs-accordion-bg:transparent;
    }
    .accordion-item{
      border:0;
      background:#fff;
      border-radius:16px!important;
      overflow:hidden;
      margin:10px;
      box-shadow:0 8px 20px rgba(30,64,120,.05);
      border:1px solid var(--border);
    }
    .accordion-button{
      background:#fff;
      color:var(--text);
      font-weight:850;
      padding:18px 20px;
      box-shadow:none!important;
      line-height:1.55;
    }
    .accordion-button:not(.collapsed){
      background:var(--primary-50);
      color:var(--primary);
    }
    .accordion-button:focus{
      box-shadow:0 0 0 4px rgba(47,111,237,.1)!important;
      border-color:rgba(47,111,237,.28);
    }
    .accordion-button::after{
      width:28px;
      height:28px;
      border-radius:10px;
      background-color:#fff;
      background-position:center;
      box-shadow:0 6px 16px rgba(30,64,120,.07);
    }
    .accordion-body{
      color:var(--muted);
      padding:0 20px 20px;
      font-size:14px;
      line-height:1.8;
    }
    .cta-card{
      position:relative;
      overflow:hidden;
      padding:30px;
      background:
        radial-gradient(circle at 90% 14%, rgba(47,111,237,.12), transparent 28%),
        linear-gradient(135deg,#fff 0%,#F4F9FF 100%);
      display:grid;
      grid-template-columns:minmax(0,1fr) 360px;
      gap:22px;
      align-items:center;
    }
    .cta-card h2{
      margin:0 0 10px;
      font-size:28px;
      font-weight:850;
      letter-spacing:-.03em;
    }
    .cta-card p{
      margin:0;
      color:var(--muted);
      font-size:15px;
      max-width:680px;
    }
    .subscribe-box{
      background:#fff;
      border:1px solid var(--border);
      border-radius:18px;
      padding:16px;
      box-shadow:0 12px 28px rgba(30,64,120,.07);
    }
    .form-control{
      border-radius:13px;
      min-height:46px;
      border-color:var(--border-strong);
      color:var(--text);
      background:#fff;
    }
    .form-control::placeholder{color:#9AADC2}
    .form-control:focus{
      border-color:rgba(47,111,237,.55);
      box-shadow:0 0 0 4px rgba(47,111,237,.1);
    }
    .form-check-input{
      border-color:var(--border-strong);
    }
    .form-check-input:checked{
      background-color:var(--primary);
      border-color:var(--primary);
    }
    .form-check-input:focus{
      box-shadow:0 0 0 4px rgba(47,111,237,.1);
      border-color:rgba(47,111,237,.45);
    }
    .form-note,.form-check-label{
      color:var(--muted);
      font-size:12px;
      line-height:1.6;
    }
    .site-footer{
      margin-left:var(--side-width);
      padding:0 0 34px;
    }
    .footer-card{
      background:#fff;
      border:1px solid var(--border);
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow);
      padding:28px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.25fr .75fr 1fr;
      gap:28px;
      align-items:start;
    }
    .footer-logo{
      display:flex;
      align-items:center;
      gap:10px;
      font-weight:850;
      color:var(--text);
      margin-bottom:12px;
    }
    .footer-text{
      color:var(--muted);
      margin:0;
      font-size:14px;
      line-height:1.8;
    }
    .footer-title{
      margin:0 0 12px;
      font-size:16px;
      font-weight:850;
    }
    .footer-links{
      display:grid;
      gap:8px;
    }
    .footer-links a{
      color:var(--muted);
      font-size:14px;
      font-weight:650;
    }
    .footer-links a:hover{
      color:var(--primary);
      transform:translateX(2px);
    }
    .copyright{
      margin-top:24px;
      padding-top:18px;
      border-top:1px solid var(--border);
      display:flex;
      justify-content:space-between;
      gap:14px;
      flex-wrap:wrap;
      color:var(--soft);
      font-size:13px;
    }
    @media (max-width:1199px){
      :root{--side-width:232px}
      .content-wrap{padding:0 26px}
      h1{font-size:36px}
      .page-head-inner{grid-template-columns:1fr}
      .overview-grid{grid-template-columns:1fr 1fr}
      .timeline{grid-template-columns:1fr 1fr}
      .cta-card{grid-template-columns:1fr}
    }
    @media (max-width:991px){
      .desktop-shell{display:none}
      .mobile-topbar{display:flex}
      .main-area,.site-footer{margin-left:0}
      main.content-wrap{padding-top:24px}
      .content-wrap{padding:0 18px}
      .article-layout{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width:767px){
      body{font-size:15px}
      .page-head{padding:24px}
      h1{font-size:30px}
      .lead{font-size:15px}
      .overview-grid,.notice-grid,.timeline{grid-template-columns:1fr}
      .section-title-row{display:block}
      .section-title-row h2{font-size:24px;margin-bottom:8px}
      .head-actions,.filter-bar{align-items:stretch}
      .btn-custom{width:100%}
      .article-card,.flow-card,.cta-card,.footer-card{padding:22px}
      .footer-grid{grid-template-columns:1fr}
    }
    @media (max-width:575px){
      .mobile-topbar{height:62px}
      .brand-main{font-size:14px}
      .brand-sub{display:none}
      .content-wrap{padding:0 14px}
      main.content-wrap{padding-bottom:50px}
      .page-head,.footer-card{border-radius:18px}
      .abstract-panel{padding:16px;border-radius:18px}
      .filter-tabs{width:100%}
      .filter-tab{flex:1;justify-content:center}
      .card-cover{height:112px}
      .copyright{display:grid}
    }