/* roulang page: index */
:root {
    --bg: #08111F;
    --bg-deep: #050C16;
    --bg-2: #0B1B30;
    --panel: rgba(16, 28, 48, 0.66);
    --panel-light: rgba(255, 255, 255, 0.04);
    --text: #E8F1FF;
    --muted: #9FB0C8;
    --blue: #2E8FFF;
    --cyan: #2EE6C0;
    --amber: #FFB84C;
    --line: rgba(168, 190, 220, 0.15);
    --danger: #E86A6A;
    --radius-lg: 24px;
    --radius-md: 18px;
    --radius-sm: 10px;
    --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.32);
    --shadow-md: 0 14px 38px rgba(0, 0, 0, 0.24);
    --shadow-glow: 0 0 0 1px rgba(46, 230, 192, 0.10), 0 18px 50px rgba(46, 230, 192, 0.10);
    --side-w: 198px;
  }

  * {
    box-sizing: border-box;
  }

  html {
    scroll-behavior: smooth;
  }

  body {
    margin: 0;
    background-color: var(--bg);
    color: var(--text);
    font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
  }

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

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

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

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

  button {
    cursor: pointer;
    border: 0;
  }

  :focus-visible {
    outline: 2px solid var(--cyan);
    outline-offset: 3px;
    border-radius: 4px;
  }

  ::selection {
    background: rgba(46, 230, 192, 0.24);
    color: #fff;
  }

  .site-aside {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    width: var(--side-w);
    z-index: 80;
    background: linear-gradient(180deg, rgba(11, 27, 48, 0.96), rgba(7, 14, 27, 0.98));
    border-right: 1px solid var(--line);
    backdrop-filter: blur(16px);
    display: flex;
    flex-direction: column;
    padding: 22px 14px 18px;
  }

  .site-main {
    position: relative;
    min-height: 100vh;
    margin-left: 0;
    overflow: hidden;
  }

  .wrap {
    width: 100%;
    max-width: 1320px;
    margin: 0 auto;
    padding-left: 24px;
    padding-right: 24px;
  }

  .glass-card {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg), inset 0 1px 0 rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(14px);
  }

  .brand-block {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 8px 18px;
    border-bottom: 1px solid rgba(168, 190, 220, 0.13);
    margin-bottom: 20px;
  }

  .brand-mark {
    position: relative;
    flex: 0 0 38px;
    width: 38px;
    height: 38px;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(46, 230, 192, 0.22), rgba(46, 143, 255, 0.16));
    border: 1px solid rgba(46, 230, 192, 0.34);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 24px rgba(46, 230, 192, 0.12);
  }

  .brand-text {
    display: flex;
    flex-direction: column;
    gap: 1px;
  }

  .brand-name {
    color: #fff;
    font-weight: 700;
    font-size: 0.98rem;
    line-height: 1.35;
    letter-spacing: 0.02em;
  }

  .brand-sub {
    color: var(--muted);
    font-size: 0.66rem;
    letter-spacing: 0.04em;
  }

  .side-nav {
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex: 1;
  }

  .nav-section-label {
    font-size: 0.66rem;
    color: rgba(159, 176, 200, 0.78);
    letter-spacing: 0.14em;
    margin: 8px 12px 10px;
  }

  .nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: 12px;
    color: var(--muted);
    font-size: 0.86rem;
    font-weight: 500;
    position: relative;
    transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
  }

  .nav-item svg {
    width: 17px;
    height: 17px;
    flex: 0 0 17px;
    opacity: 0.78;
  }

  .nav-item:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text);
  }

  .nav-item.active {
    background: rgba(46, 143, 255, 0.11);
    color: #fff;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
  }

  .nav-item.active::before {
    content: "";
    position: absolute;
    left: -14px;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 22px;
    border-radius: 0 6px 6px 0;
    background: var(--cyan);
    box-shadow: 0 0 14px rgba(46, 230, 192, 0.62);
  }

  .nav-item.active::after {
    content: "";
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--cyan);
    box-shadow: 0 0 8px var(--cyan);
  }

  .nav-badge {
    margin-left: auto;
    font-size: 0.6rem;
    background: rgba(255, 184, 76, 0.16);
    color: var(--amber);
    border: 1px solid rgba(255, 184, 76, 0.2);
    padding: 0 7px;
    border-radius: 30px;
    letter-spacing: 0.02em;
  }

  .side-foot {
    border-top: 1px solid rgba(168, 190, 220, 0.12);
    padding-top: 14px;
    margin-top: 10px;
    display: flex;
    flex-direction: column;
    gap: 10px;
  }

  .side-live {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.75rem;
    color: var(--muted);
    background: rgba(46, 230, 192, 0.05);
    border: 1px solid rgba(46, 230, 192, 0.16);
    padding: 8px 10px;
    border-radius: 12px;
  }

  .live-dot {
    position: relative;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--cyan);
  }

  .live-dot::after {
    content: "";
    position: absolute;
    inset: -5px;
    border-radius: 50%;
    border: 1px solid rgba(46, 230, 192, 0.4);
    animation: pulseLive 2.2s infinite ease;
  }

  @keyframes pulseLive {
    0% {
      transform: scale(0.6);
      opacity: 1;
    }
    80%,
    100% {
      transform: scale(1.5);
      opacity: 0;
    }
  }

  .side-link {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 10px;
    border-radius: 12px;
    font-size: 0.78rem;
    color: var(--text);
    background: rgba(46, 143, 255, 0.09);
    border: 1px solid rgba(46, 143, 255, 0.22);
    transition: 0.2s ease;
  }

  .side-link:hover {
    background: rgba(46, 230, 192, 0.1);
    border-color: rgba(46, 230, 192, 0.34);
    color: #fff;
  }

  .mobile-header {
    position: sticky;
    top: 0;
    z-index: 70;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 10px 18px;
    background: rgba(8, 17, 31, 0.82);
    border-bottom: 1px solid rgba(168, 190, 220, 0.12);
    backdrop-filter: blur(18px);
  }

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

  .mobile-header .brand-mark {
    flex-basis: 34px;
    width: 34px;
    height: 34px;
  }

  .mobile-header .brand-name {
    font-size: 0.92rem;
    white-space: nowrap;
  }

  .menu-btn {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--line);
    color: var(--text);
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .menu-btn:hover {
    border-color: rgba(46, 230, 192, 0.4);
    background: rgba(46, 230, 192, 0.08);
  }

  .drawer-mask {
    position: fixed;
    inset: 0;
    z-index: 90;
    background: rgba(4, 9, 18, 0.62);
    opacity: 0;
    visibility: hidden;
    transition: 0.3s ease;
  }

  .drawer-mask.open {
    opacity: 1;
    visibility: visible;
  }

  .mobile-drawer {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    width: min(320px, 86vw);
    z-index: 100;
    background: rgba(8, 17, 31, 0.96);
    backdrop-filter: blur(22px);
    border-right: 1px solid var(--line);
    transform: translateX(-105%);
    transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
    padding: 18px 16px;
    display: flex;
    flex-direction: column;
    gap: 18px;
  }

  .mobile-drawer.open {
    transform: translateX(0);
  }

  .drawer-close {
    align-self: flex-end;
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.06);
    color: var(--text);
    border: 1px solid var(--line);
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .kv {
    position: relative;
    min-height: 94vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    padding: 80px 24px;
    background-image:
      radial-gradient(900px 420px at 84% 0%, rgba(46, 143, 255, 0.28), transparent 62%),
      radial-gradient(760px 480px at 0% 100%, rgba(46, 230, 192, 0.14), transparent 55%),
      linear-gradient(180deg, rgba(8, 17, 31, 0.78), rgba(8, 17, 31, 0.94)),
      url(/assets/images/backpic/back-1.png);
    background-size: cover;
    background-position: center;
  }

  .kv::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
      linear-gradient(rgba(168, 190, 220, 0.04) 1px, transparent 1px),
      linear-gradient(90deg, rgba(168, 190, 220, 0.04) 1px, transparent 1px);
    background-size: 44px 44px;
    mask-image: linear-gradient(90deg, transparent, #000 55%, transparent);
  }

  .kv::after {
    content: "";
    position: absolute;
    width: 520px;
    height: 520px;
    right: -170px;
    bottom: -180px;
    border-radius: 50%;
    border: 1px solid rgba(46, 230, 192, 0.15);
    box-shadow: 0 0 0 42px rgba(46, 230, 192, 0.025), 0 0 0 88px rgba(46, 230, 192, 0.018), 0 0 0 140px rgba(46, 230, 192, 0.012);
    pointer-events: none;
  }

  .kv-content {
    position: relative;
    z-index: 2;
    max-width: 1120px;
    margin: 0 auto;
  }

  .kv-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    color: var(--cyan);
    border: 1px solid rgba(46, 230, 192, 0.32);
    border-radius: 80px;
    background: rgba(46, 230, 192, 0.08);
    font-size: 0.75rem;
    letter-spacing: 0.02em;
    box-shadow: 0 0 22px rgba(46, 230, 192, 0.08);
  }

  .kv h1 {
    margin: 22px 0 0;
    max-width: 900px;
    color: #fff;
    font-size: clamp(2.5rem, 6vw, 4.6rem);
    line-height: 1.22;
    font-weight: 800;
    letter-spacing: -0.02em;
    text-shadow: 0 10px 40px rgba(4, 10, 20, 0.55);
  }

  .kv h1 .grad-text {
    background: linear-gradient(90deg, var(--cyan), #b8f7ea 55%, var(--blue));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }

  .kv-sub {
    margin-top: 18px;
    max-width: 620px;
    color: var(--muted);
    font-size: 1.05rem;
    line-height: 1.9;
  }

  .kv-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 32px;
  }

  .btn-primary,
  .btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border-radius: 60px;
    font-weight: 700;
    min-height: 48px;
    padding: 0 24px;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
  }

  .btn-primary {
    background: linear-gradient(135deg, #2EE6C0, #39c6f3);
    color: #05251d;
    box-shadow: 0 0 0 1px rgba(46, 230, 192, 0.18), 0 16px 42px rgba(46, 230, 192, 0.22);
  }

  .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 0 1px rgba(46, 230, 192, 0.3), 0 24px 62px rgba(46, 230, 192, 0.28);
  }

  .btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 0 0 1px rgba(46, 230, 192, 0.2), 0 8px 20px rgba(46, 230, 192, 0.16);
  }

  .btn-ghost {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(168, 190, 220, 0.28);
    color: var(--text);
    backdrop-filter: blur(8px);
  }

  .btn-ghost:hover {
    border-color: rgba(46, 230, 192, 0.46);
    background: rgba(46, 230, 192, 0.08);
    color: #fff;
  }

  .btn-primary.lg,
  .btn-ghost.lg {
    min-height: 54px;
    padding: 0 32px;
  }

  .kv-panel {
    position: absolute;
    right: clamp(20px, 5vw, 84px);
    bottom: 40px;
    width: 250px;
    padding: 16px 18px;
    border-radius: 18px;
    color: var(--muted);
    z-index: 3;
  }

  .kv-panel .title {
    color: var(--text);
    font-weight: 600;
    font-size: 0.9rem;
  }

  .kv-panel .status {
    color: var(--cyan);
  }

  .kv-panel p {
    margin: 8px 0 0;
    font-size: 0.78rem;
  }

  .kv-panel a {
    display: inline-block;
    margin-top: 8px;
    color: var(--blue);
    font-size: 0.75rem;
  }

  .kv-panel a:hover {
    color: var(--cyan);
  }

  .sections {
    position: relative;
  }

  .section-block {
    position: relative;
  }

  .section-pad {
    padding-top: clamp(64px, 9vw, 108px);
    padding-bottom: clamp(64px, 9vw, 108px);
  }

  .sec-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--cyan);
    font-size: 0.76rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    border: 1px solid rgba(46, 230, 192, 0.24);
    background: rgba(46, 230, 192, 0.06);
    border-radius: 70px;
    padding: 5px 12px;
  }

  .sec-h2 {
    font-size: clamp(1.75rem, 3vw, 2.4rem);
    line-height: 1.3;
    letter-spacing: -0.01em;
    margin: 14px 0 0;
    color: #fff;
    font-weight: 700;
  }

  .sec-h2 .thin {
    color: var(--muted);
    font-weight: 400;
  }

  .sec-desc {
    margin: 14px 0 0;
    color: var(--muted);
    max-width: 720px;
    font-size: 0.97rem;
    line-height: 1.95;
  }

  .card-hover {
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  }

  .card-hover:hover {
    transform: translateY(-5px);
    border-color: rgba(46, 230, 192, 0.35);
    box-shadow: var(--shadow-lg), 0 10px 42px rgba(46, 230, 192, 0.12);
  }

  .route-wrap {
    display: grid;
    grid-template-columns: minmax(0, 340px) 1fr;
    gap: 40px;
    margin-top: 40px;
  }

  .route-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
    position: relative;
  }

  .route-node {
    display: flex;
    flex-direction: column;
    gap: 10px;
    min-height: 150px;
    padding: 18px;
    background: rgba(16, 28, 48, 0.56);
    border: 1px solid var(--line);
    border-radius: 18px;
    position: relative;
    z-index: 2;
  }

  .route-node::after {
    content: "";
    position: absolute;
    top: 46px;
    right: -14px;
    left: auto;
    width: 14px;
    height: 1px;
    background: repeating-linear-gradient(90deg, rgba(46, 230, 192, 0.4) 0 5px, transparent 5px 8px);
  }

  .route-node:last-child::after {
    display: none;
  }

  .route-node .icon {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    background: rgba(46, 143, 255, 0.12);
    border: 1px solid rgba(46, 143, 255, 0.22);
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .route-node .icon svg {
    width: 19px;
    height: 19px;
    color: #8fc1ff;
  }

  .route-node h4 {
    margin: 4px 0 0;
    font-size: 0.95rem;
    font-weight: 700;
    color: #fff;
    line-height: 1.4;
  }

  .route-node p {
    margin: 0;
    font-size: 0.8rem;
    line-height: 1.7;
    color: var(--muted);
  }

  .route-side {
    padding: 26px 22px;
    border: 1px solid var(--line);
    background: linear-gradient(180deg, rgba(16, 28, 48, 0.5), rgba(10, 20, 36, 0.44));
    border-radius: 20px;
    height: fit-content;
  }

  .route-side .meta {
    color: var(--muted);
  }

  .route-side h3 {
    color: #fff;
    font-size: 1.15rem;
    line-height: 1.5;
    font-weight: 600;
    margin: 12px 0 8px;
  }

  .route-side p {
    margin: 0;
    color: var(--muted);
    font-size: 0.86rem;
    line-height: 1.85;
  }

  .reward-band {
    background: linear-gradient(120deg, rgba(11, 27, 48, 0.35) 0, rgba(18, 29, 46, 0.55) 100%);
    border-top: 1px solid rgba(168, 190, 220, 0.08);
    border-bottom: 1px solid rgba(168, 190, 220, 0.08);
  }

  .reward-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 18px;
    margin-top: 40px;
  }

  .reward-main {
    grid-column: span 5;
    grid-row: span 2;
    border: 1px solid rgba(255, 184, 76, 0.36);
    background:
      linear-gradient(145deg, rgba(255, 184, 76, 0.08), rgba(10, 21, 37, 0.4));
    border-radius: 28px;
    overflow: hidden;
    padding: 20px;
    display: flex;
    flex-direction: column;
    box-shadow: 0 18px 48px rgba(0, 0, 0, 0.24), inset 0 1px 0 rgba(255, 255, 255, 0.07);
  }

  .reward-img {
    width: 100%;
    height: 188px;
    object-fit: cover;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.12);
  }

  .reward-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--amber);
    background: rgba(255, 184, 76, 0.1);
    border: 1px solid rgba(255, 184, 76, 0.24);
    border-radius: 60px;
    font-size: 0.72rem;
    padding: 3px 10px;
    width: fit-content;
  }

  .reward-ct {
    padding: 12px 6px 2px;
  }

  .reward-ct h3 {
    font-size: 1.35rem;
    color: #fff;
    margin: 8px 0 6px;
    line-height: 1.4;
  }

  .reward-ct p {
    margin: 0;
    font-size: 0.9rem;
    line-height: 1.8;
    color: var(--muted);
  }

  .reward-right {
    grid-column: span 7;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
  }

  .reward-time {
    grid-column: 1 / -1;
    background: rgba(255, 184, 76, 0.055);
    border: 1px solid rgba(255, 184, 76, 0.2);
    border-radius: 22px;
    padding: 18px;
    display: flex;
    align-items: center;
    gap: 14px;
  }

  .reward-icon {
    flex: 0 0 42px;
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: rgba(255, 184, 76, 0.12);
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .reward-icon svg {
    width: 21px;
    height: 21px;
    color: var(--amber);
  }

  .reward-time h4 {
    margin: 0 0 3px;
    color: #fff;
    font-weight: 600;
    font-size: 0.95rem;
  }

  .reward-time p {
    margin: 0;
    color: var(--muted);
    font-size: 0.78rem;
  }

  .reward-mini {
    background: rgba(16, 28, 48, 0.55);
    border: 1px solid var(--line);
    padding: 18px;
    border-radius: 20px;
  }

  .num {
    color: #fff;
    font-size: 1.6rem;
    font-weight: 800;
    letter-spacing: -0.02em;
  }

  .reward-mini h5 {
    color: #fff;
    font-weight: 600;
    font-size: 0.94rem;
    margin: 5px 0;
  }

  .reward-mini p {
    color: var(--muted);
    font-size: 0.78rem;
    line-height: 1.7;
    margin: 0;
  }

  .rules-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--blue);
    font-size: 0.9rem;
    margin-top: 16px;
  }

  .rules-link:hover {
    color: var(--cyan);
  }

  .rules-link svg {
    width: 14px;
    height: 14px;
    transition: transform 0.2s ease;
  }

  .rules-link:hover svg {
    transform: translateX(4px);
  }

  .progress-band {
    background: linear-gradient(160deg, rgba(11, 27, 48, 0.2), rgba(4, 12, 24, 0.25));
  }

  .progress-panel {
    margin-top: 40px;
    padding: clamp(20px, 3vw, 34px);
    border-radius: 28px;
  }

  .progress-head {
    display: flex;
    justify-content: space-between;
    gap: 18px;
    align-items: center;
    border-bottom: 1px solid var(--line);
    padding-bottom: 14px;
    margin-bottom: 24px;
  }

  .progress-stats {
    display: flex;
    gap: 18px;
  }

  .progress-stat {
    text-align: right;
  }

  .progress-stat .label {
    font-size: 0.68rem;
    color: var(--muted);
    margin-bottom: 2px;
  }

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

  .step-node {
    position: relative;
    border: 1px solid rgba(168, 190, 220, 0.12);
    border-radius: 18px;
    padding: 16px 14px;
    background: rgba(255, 255, 255, 0.025);
  }

  .step-node.done {
    border-color: rgba(46, 230, 192, 0.42);
    background: rgba(46, 230, 192, 0.06);
  }

  .step-node.active {
    border-color: rgba(46, 143, 255, 0.5);
    box-shadow: 0 0 0 1px rgba(46, 143, 255, 0.12), 0 8px 30px rgba(46, 143, 255, 0.1);
  }

  .step-line {
    height: 2px;
    background: rgba(168, 190, 220, 0.1);
    position: relative;
    top: 28px;
    margin: 0 18px;
    flex: 1;
  }

  .step-line.filled {
    background: linear-gradient(90deg, var(--cyan), rgba(46, 230, 192, 0.2));
  }

  .step-node:not(:last-child)::after {
    content: "";
    position: absolute;
    right: -19px;
    top: 28px;
    width: 18px;
    height: 1px;
    background: rgba(168, 190, 220, 0.1);
  }

  .step-node.done:not(:last-child)::after,
  .step-node.active:not(:last-child)::after {
    background: rgba(46, 230, 192, 0.4);
  }

  .step-circuit {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
  }

  .step-node .idx {
    width: 30px;
    height: 30px;
    border-radius: 10px;
    background: rgba(46, 143, 255, 0.12);
    border: 1px solid rgba(46, 143, 255, 0.22);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.76rem;
    font-weight: 700;
    color: #b9d8ff;
  }

  .step-node.done .idx {
    background: rgba(46, 230, 192, 0.16);
    border-color: rgba(46, 230, 192, 0.36);
    color: var(--cyan);
  }

  .step-node.active .idx {
    background: rgba(46, 143, 255, 0.22);
    border-color: var(--blue);
    color: #fff;
    box-shadow: 0 0 0 5px rgba(46, 143, 255, 0.06);
  }

  .step-node h4 {
    margin: 8px 0 0;
    font-size: 0.88rem;
    color: #fff;
    line-height: 1.4;
  }

  .step-node p {
    margin: 4px 0 0;
    font-size: 0.74rem;
    color: var(--muted);
    line-height: 1.65;
  }

  .progress-tip {
    margin-top: 18px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.76rem;
    color: var(--muted);
    background: rgba(255, 255, 255, 0.03);
    border: 1px dashed rgba(168, 190, 220, 0.18);
    border-radius: 14px;
    padding: 10px 14px;
  }

  .cta-area {
    position: relative;
    overflow: hidden;
    background-image:
      linear-gradient(180deg, rgba(8, 17, 31, 0.9), rgba(8, 17, 31, 0.74)),
      url(/assets/images/backpic/back-2.png);
    background-position: center;
    background-size: cover;
    padding-top: clamp(60px, 8vw, 96px);
    padding-bottom: clamp(60px, 8vw, 96px);
  }

  .cta-inner {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 26px;
  }

  .cta-inner h2 {
    color: #fff;
    font-size: clamp(1.8rem, 3.6vw, 3rem);
    font-weight: 700;
    line-height: 1.35;
    max-width: 760px;
    margin: 6px auto 0;
  }

  .cta-inner .desc {
    color: var(--muted);
    margin: 12px auto 0;
    max-width: 560px;
  }

  .cta-btns {
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 28px;
  }

  .cta-btn-main {
    appearance: none;
    min-height: 58px;
    padding: 0 42px;
    border-radius: 60px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 800;
    font-size: 1rem;
    color: #03211b;
    background: linear-gradient(135deg, #2EE6C0, #4cc2f5);
    box-shadow: 0 0 0 1px rgba(46, 230, 192, 0.24), 0 20px 60px rgba(46, 230, 192, 0.28);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
  }

  .cta-btn-main:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 0 1px rgba(46, 230, 192, 0.34), 0 28px 80px rgba(46, 230, 192, 0.34);
  }

  .cta-btn-main:active {
    transform: translateY(1px);
    box-shadow: 0 0 0 1px rgba(46, 230, 192, 0.2), 0 8px 22px rgba(46, 230, 192, 0.2);
  }

  .cta-note {
    margin-top: 12px;
    color: #7f93ad;
    font-size: 0.74rem;
  }

  .news-band {
    background: linear-gradient(180deg, rgba(8, 17, 31, 0.2), rgba(5, 12, 24, 0.3));
  }

  .news-head {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 28px;
  }

  .more-link {
    flex: 0 0 auto;
    color: var(--blue);
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding-bottom: 4px;
  }

  .more-link:hover {
    color: var(--cyan);
  }

  .more-link svg {
    width: 14px;
    height: 14px;
  }

  .news-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    gap: 22px;
    align-items: stretch;
  }

  .news-card {
    background: rgba(16, 28, 48, 0.45);
    border: 1px solid var(--line);
    border-radius: 22px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
  }

  .news-card:hover {
    transform: translateY(-4px);
    border-color: rgba(46, 230, 192, 0.36);
    box-shadow: 0 16px 40px rgba(2, 8, 18, 0.28);
  }

  .news-card .news-img {
    width: 100%;
    height: 220px;
    object-fit: cover;
  }

  .news-body {
    padding: 18px 18px 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex: 1;
  }

  .chip {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 3px 9px;
    font-size: 0.7rem;
    border-radius: 50px;
    background: rgba(255, 184, 76, 0.08);
    border: 1px solid rgba(255, 184, 76, 0.2);
    color: var(--amber);
    width: fit-content;
  }

  .chip.cyan {
    background: rgba(46, 230, 192, 0.08);
    border-color: rgba(46, 230, 192, 0.2);
    color: var(--cyan);
  }

  .news-title {
    color: #fff;
    font-size: 1.08rem;
    font-weight: 700;
    line-height: 1.55;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .news-desc {
    margin: 0;
    color: var(--muted);
    font-size: 0.83rem;
    line-height: 1.75;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .news-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-top: auto;
    font-size: 0.73rem;
    color: #7d91ab;
  }

  .news-link {
    color: var(--blue);
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    gap: 3px;
  }

  .news-link:hover {
    color: var(--cyan);
  }

  .news-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
  }

  .news-row {
    background: rgba(16, 28, 48, 0.35);
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 10px 12px;
    display: grid;
    grid-template-columns: 86px 1fr auto;
    gap: 12px;
    align-items: center;
    transition: 0.22s ease;
  }

  .news-row:hover {
    border-color: rgba(46, 230, 192, 0.34);
    transform: translateX(3px);
    background: rgba(46, 230, 192, 0.04);
  }

  .news-row .thumb {
    width: 86px;
    height: 74px;
    object-fit: cover;
    border-radius: 12px;
  }

  .news-row .row-main {
    min-width: 0;
  }

  .news-row h3 {
    margin: 0 0 3px;
    font-size: 0.86rem;
    line-height: 1.5;
    color: #fff;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .news-row p {
    margin: 0;
    color: var(--muted);
    font-size: 0.72rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .news-row .meta2 {
    color: #7d91ab;
    font-size: 0.7rem;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 4px;
    white-space: nowrap;
  }

  .empty-state {
    background: rgba(255, 255, 255, 0.025);
    border: 1px dashed rgba(168, 190, 220, 0.2);
    border-radius: 20px;
    padding: 42px 24px;
    text-align: center;
    color: var(--muted);
    grid-column: 1 / -1;
  }

  .empty-state p {
    font-size: 0.9rem;
    margin: 0 0 12px;
  }

  .empty-state a {
    color: var(--cyan);
    font-size: 0.85rem;
  }

  .mobile-float {
    position: fixed;
    left: 50%;
    transform: translateX(-50%);
    bottom: 16px;
    z-index: 60;
    display: flex;
    gap: 8px;
    align-items: center;
    padding: 6px 6px 6px 14px;
    background: rgba(8, 17, 31, 0.72);
    border: 1px solid rgba(46, 230, 192, 0.34);
    border-radius: 60px;
    backdrop-filter: blur(16px);
    box-shadow: var(--shadow-glow);
  }

  .mobile-float-main {
    color: #061f1a;
    background: linear-gradient(135deg, #2EE6C0, #38b5ec);
    border-radius: 60px;
    font-weight: 700;
    font-size: 0.86rem;
    padding: 8px 16px;
    box-shadow: 0 6px 18px rgba(46, 230, 192, 0.2);
    white-space: nowrap;
  }

  .mobile-float .float-close {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.09);
    color: var(--muted);
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 28px;
  }

  .footer {
    border-top: 1px solid rgba(168, 190, 220, 0.12);
    background: rgba(4, 10, 20, 0.7);
    padding: 46px 24px 28px;
  }

  .footer-grid {
    max-width: 1120px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
    gap: 28px;
  }

  .footer-brand {
    display: flex;
    flex-direction: column;
    gap: 10px;
  }

  .footer-brand .brand-name {
    font-size: 1.02rem;
  }

  .footer h5 {
    color: #fff;
    font-size: 0.9rem;
    margin: 0 0 8px;
    font-weight: 600;
  }

  .footer p {
    margin: 0;
    color: var(--muted);
    font-size: 0.78rem;
    line-height: 1.8;
  }

  .footer-links {
    display: flex;
    flex-direction: column;
    gap: 8px;
  }

  .footer-links a {
    color: #7790a8;
    font-size: 0.8rem;
    transition: color 0.2s ease;
    width: fit-content;
  }

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

  .footer-copyright {
    color: #6c83a0;
    font-size: 0.72rem;
    margin-top: 34px;
    padding-top: 18px;
    border-top: 1px solid rgba(168, 190, 220, 0.1);
    display: flex;
    flex-wrap: wrap;
    gap: 12px 24px;
    justify-content: center;
    max-width: 1120px;
    margin-left: auto;
    margin-right: auto;
  }

  @media (min-width: 1024px) {
    .site-aside {
      display: flex;
    }

    .site-main {
      margin-left: var(--side-w);
      width: calc(100% - var(--side-w));
    }

    .mobile-header {
      display: none;
    }

    .mobile-float {
      display: none;
    }
  }

  @media (min-width: 1024px) and (max-width: 1279px) {
    .kv-sub {
      font-size: 0.95rem;
    }

    .reward-right {
      grid-column: span 7;
    }

    .footer-grid {
      grid-template-columns: 1fr 0.8fr 0.8fr;
    }

    .footer-grid > div:last-child {
      grid-column: 1 / -1;
    }
  }

  @media (max-width: 1023px) {
    .mobile-header {
      display: flex;
    }

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

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

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

    .route-node::after {
      display: none;
    }

    .progress-grid {
      grid-template-columns: repeat(2, 1fr);
      gap: 12px;
    }

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

    .reward-main,
    .reward-right {
      grid-column: 1;
      grid-row: auto;
    }

    .reward-right {
      display: grid;
      grid-template-columns: 1fr 1fr;
    }

    .kv {
      min-height: 92vh;
      padding-left: 18px;
      padding-right: 18px;
    }

    .kv-panel {
      display: none;
    }
  }

  @media (min-width: 640px) and (max-width: 1023px) {
    .news-layout {
      grid-template-columns: 1fr;
    }
  }

  @media (max-width: 767px) {
    .footer-grid {
      grid-template-columns: 1fr;
      gap: 20px;
    }

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

  @media (max-width: 640px) {
    .wrap {
      padding-left: 16px;
      padding-right: 16px;
    }

    .kv h1 {
      font-size: clamp(2rem, 9vw, 3.1rem);
    }

    .kv {
      padding-top: 54px;
      padding-bottom: 54px;
      align-items: flex-start;
    }

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

    .btn-primary,
    .btn-ghost {
      justify-content: center;
    }

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

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

    .progress-stats {
      justify-content: flex-start;
    }

    .reward-right {
      grid-template-columns: 1fr;
    }

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

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

    .news-row .thumb {
      width: 100%;
      height: 170px;
    }

    .news-row .meta2 {
      flex-direction: row;
      align-items: center;
      justify-content: space-between;
    }

    .news-title {
      font-size: 1rem;
    }

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

    .more-link {
      margin-left: 0;
    }

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

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

    .kv-panel {
      display: none;
    }
  }

  @media (max-width: 400px) {
    .section-pad {
      padding-top: 52px;
      padding-bottom: 52px;
    }

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

    .route-side {
      padding: 20px 16px;
    }

    .reward-time {
      flex-direction: column;
      text-align: left;
    }
  }

/* roulang page: article */
:root {
  --bg: #08111F;
  --sidebar-bg: #0B1B30;
  --surface: rgba(16, 28, 48, 0.66);
  --surface-soft: rgba(255, 255, 255, 0.03);
  --border: rgba(168, 190, 220, 0.15);
  --border-light: rgba(168, 190, 220, 0.24);
  --text: #E8F1FF;
  --text-secondary: #9FB0C8;
  --text-muted: #6D819E;
  --brand: #2E8FFF;
  --cta: #2EE6C0;
  --amber: #FFB84C;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
  line-height: 1.7;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

body, a, p, h1, h2, h3, h4, h5, h6, div, section, header, aside, footer {
  text-wrap: pretty;
}

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

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

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

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--cta);
  outline-offset: 3px;
  border-radius: 6px;
}

.app-shell {
  display: flex;
  min-height: 100vh;
}

.side-panel {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 208px;
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 100;
  overflow-y: auto;
}

.side-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 20px 16px 18px;
  border-bottom: 1px solid rgba(168, 190, 220, 0.1);
}

.brand-symbol {
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  border-radius: 12px;
  background: linear-gradient(145deg, rgba(46, 230, 192, 0.15), rgba(46, 143, 255, 0.08));
  border: 1px solid rgba(46, 230, 192, 0.36);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 18px rgba(46, 230, 192, 0.08);
}

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

.brand-title {
  display: block;
  color: var(--text);
  font-weight: 800;
  font-size: 15px;
  letter-spacing: 0.01em;
  white-space: nowrap;
  line-height: 1.3;
}

.brand-sub {
  display: block;
  color: var(--text-muted);
  font-size: 11px;
  letter-spacing: 0.15em;
  margin-top: 3px;
}

.side-nav-wrap {
  padding: 14px 12px;
}

.nav-section-label {
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  padding: 0 8px 8px;
  text-transform: uppercase;
}

.side-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 10px 12px;
  border-radius: 12px;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  position: relative;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  border: 1px solid transparent;
}

.nav-item svg {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  opacity: 0.8;
}

.nav-badge {
  margin-left: auto;
  background: rgba(255, 184, 76, 0.12);
  color: var(--amber);
  border: 1px solid rgba(255, 184, 76, 0.25);
  font-size: 11px;
  line-height: 1;
  padding: 3px 7px;
  border-radius: 999px;
  font-weight: 600;
}

.nav-item:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(168, 190, 220, 0.1);
}

.nav-item.active {
  color: #F5FAFF;
  background: linear-gradient(90deg, rgba(46, 230, 192, 0.12), rgba(255, 255, 255, 0.03));
  border-color: rgba(46, 230, 192, 0.22);
  font-weight: 650;
}

.nav-item.active::before {
  content: '';
  position: absolute;
  left: -12px;
  top: 8px;
  bottom: 8px;
  width: 4px;
  border-radius: 0 6px 6px 0;
  background: var(--cta);
  box-shadow: 0 0 14px rgba(46, 230, 192, 0.5);
}

.side-foot {
  margin-top: auto;
  padding: 16px;
  border-top: 1px solid rgba(168, 190, 220, 0.1);
}

.side-status {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 12px;
  margin-bottom: 12px;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cta);
  box-shadow: 0 0 8px rgba(46, 230, 192, 0.6);
}

.side-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: linear-gradient(135deg, #1ED9B4, #24D6C4);
  color: #06221E;
  padding: 9px 12px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 13px;
  transition: box-shadow 0.25s ease, transform 0.15s ease;
}

.side-cta:hover {
  box-shadow: 0 0 22px rgba(46, 230, 192, 0.4);
  transform: translateY(-1px);
  color: #06221E;
}

.side-cta:active {
  transform: translateY(0);
  box-shadow: 0 0 10px rgba(46, 230, 192, 0.25);
}

.main-content {
  margin-left: 208px;
  width: calc(100% - 208px);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.mobile-topbar {
  display: none;
}

.mobile-drawer {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 288px;
  background: rgba(7, 14, 26, 0.96);
  backdrop-filter: blur(22px);
  border-right: 1px solid var(--border-light);
  z-index: 220;
  transform: translateX(-100%);
  transition: transform 0.3s ease;
  padding: 18px 16px 24px;
  overflow-y: auto;
}

.mobile-drawer.is-open {
  transform: translateX(0);
}

.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(3, 7, 12, 0.68);
  z-index: 210;
  backdrop-filter: blur(3px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.drawer-overlay.is-visible {
  opacity: 1;
  visibility: visible;
}

.drawer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 18px;
  margin-bottom: 18px;
  border-bottom: 1px solid rgba(168, 190, 220, 0.12);
}

.drawer-brand .brand-title {
  font-size: 17px;
}

.mobile-drawer .nav-section-label {
  margin-top: 8px;
}

.mobile-drawer .nav-item {
  padding: 12px 13px;
}

.drawer-status {
  margin-top: 28px;
  padding: 12px 10px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.03);
  display: flex;
  gap: 8px;
  align-items: center;
  color: var(--text-secondary);
  font-size: 13px;
}

.mobile-topbar {
  position: sticky;
  top: 0;
  z-index: 120;
  height: 64px;
  background: rgba(7, 13, 24, 0.88);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border);
  align-items: center;
  justify-content: space-between;
  padding: 0 18px;
}

.mobile-brand {
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--text);
  font-weight: 800;
  font-size: 16px;
  white-space: nowrap;
}

.menu-open-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  border: 1px solid var(--border-light);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.menu-open-btn:hover {
  background: rgba(46, 230, 192, 0.1);
  border-color: rgba(46, 230, 192, 0.45);
}

.menu-close-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  margin-left: auto;
  border-radius: 10px;
  border: 1px solid rgba(168, 190, 220, 0.14);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-secondary);
  cursor: pointer;
}

.content-wrap {
  width: 100%;
  max-width: 1320px;
  margin: 0 auto;
  padding: 34px 40px 72px;
  flex: 1 0 auto;
}

.article-layout {
  max-width: 920px;
  margin: 0 auto;
}

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

.breadcrumb a {
  color: var(--text-secondary);
  transition: color 0.2s ease;
}

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

.breadcrumb .sep {
  color: var(--text-muted);
  opacity: 0.7;
  display: flex;
  align-items: center;
}

.breadcrumb .sep svg {
  width: 14px;
  height: 14px;
}

.breadcrumb-current {
  color: var(--text-secondary);
  max-width: 280px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.article-panel {
  border: 1px solid rgba(168, 190, 220, 0.14);
  background: rgba(14, 25, 44, 0.72);
  border-radius: 28px;
  padding: clamp(24px, 5vw, 48px);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.22), inset 0 1px 0 rgba(255, 255, 255, 0.04);
  position: relative;
  overflow: hidden;
  margin-bottom: 34px;
}

.article-panel::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.22;
  background: radial-gradient(500px 160px at 80% -10%, rgba(46, 143, 255, 0.22), transparent 70%);
}

.article-kicker {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--cta);
  font-size: 12px;
  letter-spacing: 0.08em;
  font-weight: 600;
  margin-bottom: 22px;
  background: rgba(46, 230, 192, 0.08);
  border: 1px solid rgba(46, 230, 192, 0.2);
  border-radius: 999px;
  padding: 6px 12px;
}

.article-category-badge {
  display: inline-flex;
  align-items: center;
  color: var(--amber);
  background: rgba(255, 184, 76, 0.1);
  border: 1px solid rgba(255, 184, 76, 0.24);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  padding: 5px 12px;
  gap: 6px;
  margin-bottom: 16px;
}

.article-title {
  position: relative;
  color: #EFF6FF;
  font-size: clamp(1.9rem, 4.2vw, 3.1rem);
  line-height: 1.32;
  font-weight: 800;
  margin: 0 0 20px;
  letter-spacing: -0.01em;
}

.article-meta {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 22px;
  color: var(--text-muted);
  font-size: 13px;
  border-top: 1px solid rgba(168, 190, 220, 0.12);
  border-bottom: 1px solid rgba(168, 190, 220, 0.12);
  padding: 13px 0;
  margin-bottom: 28px;
}

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

.article-meta-item svg {
  width: 15px;
  height: 15px;
  color: var(--text-muted);
}

.article-body {
  font-size: 1.0625rem;
  line-height: 1.85;
  color: #D6E1F2;
  position: relative;
}

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

.article-body p {
  margin: 0 0 1.65em;
}

.article-body h2 {
  font-size: 1.62rem;
  line-height: 1.4;
  color: #F1F6FF;
  font-weight: 750;
  margin: 2.1em 0 0.8em;
  padding-left: 14px;
  border-left: 3px solid var(--cta);
  letter-spacing: -0.01em;
}

.article-body h3 {
  font-size: 1.3rem;
  line-height: 1.45;
  color: #EAF1FB;
  font-weight: 700;
  margin: 1.9em 0 0.7em;
}

.article-body h4 {
  font-size: 1.1rem;
  color: #EAF1FB;
  font-weight: 650;
  margin: 1.6em 0 0.6em;
}

.article-body a {
  color: var(--cta);
  border-bottom: 1px solid rgba(46, 230, 192, 0.3);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.article-body a:hover {
  color: #8BF7E2;
  border-color: rgba(139, 247, 226, 0.6);
}

.article-body ul,
.article-body ol {
  margin: 0 0 1.6em;
  padding-left: 1.6em;
}

.article-body li {
  margin-bottom: 0.5em;
  color: #CDDBEF;
}

.article-body li::marker {
  color: var(--cta);
}

.article-body img {
  border-radius: 18px;
  width: auto;
  max-width: 100%;
  margin: 2em auto;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.article-body figure {
  margin: 2em 0;
}

.article-body figcaption {
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
  margin-top: -1em;
}

.article-body blockquote {
  border-left: 3px solid var(--cta);
  background: rgba(46, 230, 192, 0.05);
  color: #C9D8EB;
  padding: 14px 20px;
  border-radius: 0 14px 14px 0;
  margin: 0 0 1.8em;
}

.article-body pre {
  background: rgba(4, 8, 15, 0.84);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow-x: auto;
  padding: 20px;
  line-height: 1.7;
  color: #CFE3FC;
  font-size: 0.95rem;
}

.article-body code {
  font-family: 'SFMono-Regular', Menlo, Consolas, monospace;
}

.article-body :not(pre) > code {
  background: rgba(46, 143, 255, 0.1);
  color: #9BCDFF;
  border-radius: 6px;
  padding: 2px 7px;
  font-size: 0.94em;
}

.article-body hr {
  border: 0;
  height: 1px;
  background: var(--border);
  margin: 2.4em 0;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.96rem;
  margin: 0 0 1.8em;
  border-radius: 14px;
  overflow: hidden;
}

.article-body th {
  background: rgba(255, 255, 255, 0.08);
  color: #E6EEFB;
  font-weight: 650;
  padding: 13px 15px;
  text-align: left;
}

.article-body td {
  border: 1px solid rgba(168, 190, 220, 0.12);
  padding: 12px 15px;
  color: #C7D5E9;
}

.article-body tr:nth-child(even) td {
  background: rgba(255, 255, 255, 0.018);
}

.missing-state {
  text-align: center;
  padding: 58px 20px;
}

.missing-state h2 {
  border-left: 0;
  padding-left: 0;
  text-align: center;
  margin: 0 0 16px;
}

.missing-text {
  color: var(--text-muted);
  font-size: 15px;
  margin-bottom: 24px;
}

.btn-home-return {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  background: linear-gradient(135deg, #1ED9B4, #2EE6C0);
  color: #06221E;
  font-weight: 650;
  border-radius: 999px;
  padding: 11px 20px;
  transition: box-shadow 0.2s ease, transform 0.15s ease;
}

.btn-home-return:hover {
  box-shadow: 0 0 24px rgba(46, 230, 192, 0.32);
  transform: translateY(-1px);
  color: #06221E;
}

.article-back-links {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  max-width: 920px;
  margin: 6px auto 0;
  font-size: 14px;
}

.text-back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
  transition: color 0.2s ease, transform 0.2s ease;
}

.text-back-link:hover {
  color: var(--cta);
}

.text-back-link svg {
  width: 16px;
  height: 16px;
}

.related-section {
  max-width: 920px;
  margin: 72px auto 26px;
}

.related-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 24px;
}

.related-head h2 {
  font-size: clamp(1.4rem, 2.4vw, 1.9rem);
  font-weight: 750;
  color: #EDF4FF;
  margin: 0;
  letter-spacing: -0.01em;
}

.related-sub {
  color: var(--text-muted);
  font-size: 13px;
  white-space: nowrap;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.related-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
  background: rgba(14, 24, 41, 0.7);
  border-radius: 20px;
  overflow: hidden;
  transition: transform 0.25s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.related-card:hover {
  transform: translateY(-4px);
  border-color: rgba(46, 230, 192, 0.45);
  box-shadow: 0 18px 34px rgba(0, 0, 0, 0.18), 0 0 0 1px rgba(46, 230, 192, 0.08);
}

.related-cover {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.02);
}

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

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

.related-cover span {
  position: absolute;
  left: 12px;
  bottom: 12px;
  background: rgba(7, 14, 25, 0.82);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(46, 230, 192, 0.28);
  border-radius: 999px;
  color: #B7F7E8;
  font-size: 11px;
  padding: 4px 10px;
  letter-spacing: 0.02em;
}

.related-info {
  padding: 18px 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

.related-info h3 {
  font-size: 17px;
  font-weight: 700;
  color: #E6EFFB;
  margin: 0;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 51px;
}

.related-card p {
  color: var(--text-secondary);
  font-size: 13px;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-more {
  color: var(--brand);
  font-size: 13px;
  font-weight: 550;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 6px;
  transition: color 0.2s ease, gap 0.2s ease;
}

.related-card:hover .related-more {
  color: var(--cta);
  gap: 9px;
}

.related-more svg {
  width: 14px;
  height: 14px;
}

.footer {
  width: 100%;
  margin-top: 96px;
  background: rgba(9, 18, 32, 0.92);
  border-top: 1px solid var(--border);
  padding: 40px 44px 24px;
}

.footer-grid {
  max-width: 1240px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.35fr 0.9fr 0.9fr 1fr;
  gap: 36px;
  color: var(--text-secondary);
  font-size: 13px;
}

.footer-brand p,
.footer-links + p {
  margin: 10px 0 0;
  color: var(--text-muted);
  font-size: 13px;
  line-height: 1.8;
}

.brand-mark {
  width: 30px;
  height: 30px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(46, 230, 192, 0.1);
  border: 1px solid rgba(46, 230, 192, 0.25);
}

.footer .brand-name {
  color: #E8F1FF;
  font-weight: 800;
  font-size: 16px;
  letter-spacing: 0.01em;
}

.footer h5 {
  font-size: 14px;
  font-weight: 650;
  color: #D4E0F2;
  margin: 4px 0 14px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: flex-start;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 13px;
  transition: color 0.2s ease, transform 0.2s ease;
}

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

.footer-copyright {
  max-width: 1240px;
  margin: 36px auto 0;
  padding-top: 20px;
  border-top: 1px solid rgba(168, 190, 220, 0.12);
  color: var(--text-muted);
  font-size: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  justify-content: space-between;
}

@media (max-width: 1360px) {
  .related-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }
}

@media (max-width: 1180px) {
  .article-layout,
  .related-section {
    max-width: 880px;
  }
}

@media (max-width: 1024px) {
  .side-panel {
    display: none;
  }

  .main-content {
    margin-left: 0;
    width: 100%;
  }

  .mobile-topbar {
    display: flex;
  }

  .content-wrap {
    padding: 24px 20px 46px;
  }

  .footer {
    padding-left: 24px;
    padding-right: 24px;
  }

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

  .article-panel {
    padding: 28px 24px;
  }

  .breadcrumb-current {
    max-width: 210px;
  }
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 26px;
  }

  .content-wrap {
    padding-left: 16px;
    padding-right: 16px;
    padding-bottom: 44px;
  }

  .article-title {
    font-size: clamp(1.55rem, 7vw, 2.2rem);
  }

  .article-body {
    font-size: 1rem;
    line-height: 1.82;
  }

  .article-body h2 {
    font-size: 1.35rem;
  }

  .article-body h3 {
    font-size: 1.16rem;
  }

  .article-body pre {
    font-size: 0.85rem;
    padding: 14px;
  }

  .article-meta {
    gap: 10px 12px;
  }
}

@media (max-width: 520px) {
  .mobile-topbar {
    height: 58px;
    padding: 0 12px;
  }

  .mobile-brand {
    font-size: 15px;
  }

  .menu-open-btn {
    width: 36px;
    height: 36px;
  }

  .content-wrap {
    padding: 18px 14px 38px;
  }

  .breadcrumb {
    font-size: 12px;
    margin-bottom: 18px;
  }

  .breadcrumb-current {
    max-width: 150px;
  }

  .article-panel {
    padding: 24px 18px;
    border-radius: 21px;
  }

  .article-kicker {
    font-size: 11px;
  }

  .article-body figcaption {
    font-size: 12px;
  }

  .article-body table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }

  .related-head {
    align-items: center;
  }

  .related-sub {
    display: none;
  }

  .footer {
    padding: 32px 18px 20px;
    margin-top: 60px;
  }

  .article-back-links {
    gap: 14px;
    padding: 0 2px;
  }
}

/* roulang page: category1 */
:root {
  --bg-deep: #08111F;
  --bg-navy: #0B1B30;
  --panel: rgba(16, 28, 48, 0.66);
  --glass: rgba(255, 255, 255, 0.04);
  --line: rgba(168, 190, 220, 0.15);
  --txt: #E8F1FF;
  --muted: #9FB0C8;
  --brand-blue: #2E8FFF;
  --cta: #2EE6C0;
  --amber: #FFB84C;
  --cyan: #40C7FF;
  --danger: #F87171;
  --radius-xl: 24px;
  --radius-lg: 18px;
  --radius-md: 12px;
  --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.45);
  --glow-cyan: 0 0 0 1px rgba(46, 230, 192, 0.2), 0 0 30px rgba(46, 230, 192, 0.2);
  --font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--bg-deep);
  color: var(--txt);
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body.no-scroll {
  overflow: hidden;
}
p, h1, h2, h3, h4, h5, ul, ol, dl, dd, blockquote, figure {
  margin: 0;
  padding: 0;
}
ul, ol {
  list-style: none;
}
a {
  color: inherit;
  text-decoration: none;
}
img {
  display: block;
  max-width: 100%;
}
button, input, textarea, select {
  font: inherit;
  color: inherit;
  border: none;
  background: none;
}
button {
  cursor: pointer;
}
input:focus, button:focus, textarea:focus, a:focus {
  outline: none;
}
input:focus-visible, button:focus-visible, a:focus-visible, summary:focus-visible {
  outline: 2px solid var(--cta);
  outline-offset: 3px;
  border-radius: 6px;
}
::selection {
  color: #09111f;
  background: rgba(46, 230, 192, 0.72);
}
details summary {
  list-style: none;
}
details summary::-webkit-details-marker {
  display: none;
}
a.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 999;
  background: var(--cta);
  color: #07111f;
  padding: 10px 18px;
  border-radius: 0 0 10px 0;
}
a.skip-link:focus {
  left: 0;
}
.container {
  margin: 0 auto;
  padding-left: clamp(20px, 4vw, 48px);
  padding-right: clamp(20px, 4vw, 48px);
  width: 100%;
  max-width: 1320px;
}
.section {
  padding-top: clamp(64px, 8.5vh, 112px);
  padding-bottom: clamp(64px, 8.5vh, 112px);
}
.section-light {
  position: relative;
}

.main-wrap {
  margin-left: 228px;
  min-height: 100vh;
  background:
    radial-gradient(900px 560px at 86% -120px, rgba(46, 143, 255, 0.14), transparent 62%),
    radial-gradient(760px 460px at 12% 42%, rgba(46, 230, 192, 0.05), transparent 60%),
    linear-gradient(180deg, #0A1526 0%, #07101E 100%);
  overflow: hidden;
}

/* ---------- Sidebar ---------- */
.side-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 228px;
  height: 100vh;
  z-index: 80;
  display: flex;
  flex-direction: column;
  background: rgba(5, 10, 21, 0.86);
  border-right: 1px solid rgba(168, 190, 220, 0.12);
  box-shadow: 18px 0 45px rgba(0, 0, 0, 0.24);
  backdrop-filter: blur(16px);
}
.brand-block {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 11px;
  padding: 28px 22px 24px;
  border-bottom: 1px solid rgba(168, 190, 220, 0.11);
  position: relative;
}
.brand-mark {
  width: 48px;
  height: 48px;
  display: inline-grid;
  place-items: center;
  border-radius: 15px;
  background: radial-gradient(circle at 30% 20%, rgba(46, 230, 192, 0.16), rgba(46, 143, 255, 0.06));
  border: 1px solid rgba(46, 230, 192, 0.3);
  box-shadow: 0 0 24px rgba(46, 230, 192, 0.13), inset 0 0 14px rgba(46, 230, 192, 0.06);
}
.brand-text {
  font-size: 1.01rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  line-height: 1.3;
  color: #F2F7FF;
  text-shadow: 0 0 22px rgba(46, 230, 192, 0.2);
}
.brand-caption {
  font-size: 0.68rem;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.side-close {
  position: absolute;
  top: 18px;
  right: 15px;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  display: none;
  place-items: center;
  color: var(--muted);
  border: 1px solid transparent;
  transition: all 0.25s ease;
}
.side-close:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--line);
}
.nav-select {
  padding: 18px 18px 8px;
}
.nav-select-label {
  font-size: 0.68rem;
  color: #687c99;
  letter-spacing: 0.14em;
  padding: 0 8px 10px;
  text-transform: uppercase;
}
.side-nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 2px 14px 12px;
  flex: 1;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 12px;
  border-radius: 13px;
  border: 1px solid transparent;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 500;
  position: relative;
  transition: all 0.24s ease;
}
.nav-item svg {
  width: 18px;
  height: 18px;
  flex: 0 0 18px;
  opacity: 0.85;
}
.nav-item:hover {
  color: #E7F2FF;
  background: rgba(255, 255, 255, 0.045);
  border-color: rgba(168, 190, 220, 0.12);
}
.nav-item.active {
  color: #fff;
  background: linear-gradient(90deg, rgba(46, 230, 192, 0.13), rgba(46, 143, 255, 0.06));
  border-color: rgba(46, 230, 192, 0.2);
  box-shadow: 0 0 24px rgba(46, 230, 192, 0.05);
}
.nav-item.active::before {
  content: "";
  position: absolute;
  left: -14px;
  top: 12px;
  bottom: 12px;
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: var(--cta);
  box-shadow: 0 0 12px rgba(46, 230, 192, 0.7);
}
.nav-badge {
  margin-left: auto;
  font-size: 0.62rem;
  background: linear-gradient(135deg, rgba(255, 184, 76, 0.2), rgba(255, 120, 60, 0.18));
  color: #FFD399;
  border: 1px solid rgba(255, 184, 76, 0.28);
  padding: 1px 7px;
  border-radius: 20px;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.side-foot {
  padding: 16px 18px 20px;
  border-top: 1px solid rgba(168, 190, 220, 0.1);
}
.side-foot-card {
  background: rgba(255, 255, 255, 0.036);
  border: 1px solid rgba(168, 190, 220, 0.12);
  border-radius: 16px;
  padding: 13px 14px;
  font-size: 0.76rem;
  color: var(--muted);
  line-height: 1.6;
}
.side-foot-card strong {
  color: #D9E7FF;
  font-weight: 600;
  display: block;
  margin-bottom: 3px;
}

/* ---------- Mobile Header ---------- */
.mobile-header {
  display: none;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 70;
  background: rgba(6, 12, 22, 0.86);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(168, 190, 220, 0.13);
  padding: 12px 18px;
}
.mobile-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1rem;
  color: #F2F7FF;
}
.mobile-brand-icon {
  width: 34px;
  height: 34px;
  display: inline-grid;
  place-items: center;
  border-radius: 10px;
  border: 1px solid rgba(46, 230, 192, 0.3);
  background: rgba(46, 230, 192, 0.08);
  box-shadow: 0 0 18px rgba(46, 230, 192, 0.08);
}
.hamburger {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  color: #D9E6FA;
  border: 1px solid rgba(168, 190, 220, 0.18);
  background: rgba(255, 255, 255, 0.04);
  transition: all 0.25s ease;
}
.hamburger:hover {
  border-color: rgba(46, 230, 192, 0.45);
  color: #fff;
}
.drawer-overlay {
  position: fixed;
  inset: 0;
  z-index: 75;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  background: rgba(3, 7, 13, 0.58);
  backdrop-filter: blur(3px);
  transition: opacity 0.3s ease, visibility 0.3s ease;
}
body.drawer-open .drawer-overlay {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}
body.drawer-open .side-bar {
  transform: translateX(0);
}
body.drawer-open {
  overflow: hidden;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  border-radius: 999px;
  padding: 0.78rem 1.45rem;
  font-weight: 600;
  font-size: 0.92rem;
  line-height: 1.3;
  white-space: nowrap;
  border: 1px solid transparent;
  transition: all 0.25s ease;
}
.btn svg {
  width: 18px;
  height: 18px;
}
.btn-primary {
  color: #06121b;
  background: linear-gradient(135deg, #2EE6C0 0%, #24C6E3 100%);
  box-shadow: 0 8px 28px rgba(46, 230, 192, 0.22), 0 0 0 1px rgba(46, 230, 192, 0.18);
}
.btn-primary:hover {
  background: linear-gradient(135deg, #44F2D0 0%, #47D7F0 100%);
  box-shadow: 0 10px 36px rgba(46, 230, 192, 0.35);
  transform: translateY(-2px);
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 4px 16px rgba(46, 230, 192, 0.25);
}
.btn-outline {
  border-color: rgba(168, 190, 220, 0.35);
  color: #D4E2F7;
  background: rgba(255, 255, 255, 0.03);
}
.btn-outline:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(46, 230, 192, 0.55);
  box-shadow: 0 0 22px rgba(46, 230, 192, 0.08);
  transform: translateY(-2px);
}
.btn-outline:active {
  transform: translateY(0);
}
.btn-lg {
  padding: 0.95rem 1.9rem;
  font-size: 1rem;
}
.btn-sm {
  padding: 0.58rem 1rem;
  font-size: 0.82rem;
}
.btn-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--brand-blue);
  font-size: 0.92rem;
  font-weight: 500;
  transition: all 0.25s ease;
}
.btn-link:hover {
  color: var(--cta);
}
.btn-link:hover svg {
  transform: translateX(4px);
}
.btn-link svg {
  width: 16px;
  height: 16px;
  transition: transform 0.25s ease;
}

/* ---------- Eyebrow / section heads ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cta);
  margin-bottom: 14px;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: linear-gradient(90deg, var(--cta), transparent);
}
.section-title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  line-height: 1.25;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: #F1F7FF;
}
.section-desc {
  color: var(--muted);
  max-width: 640px;
  margin-top: 12px;
  font-size: 1rem;
}
.topline {
  color: var(--muted);
  font-size: 0.84rem;
}

/* ---------- Banner hero for category ---------- */
.page-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  display: flex;
  align-items: center;
  min-height: 78vh;
  padding-top: clamp(60px, 10vh, 128px);
  padding-bottom: clamp(52px, 8vh, 100px);
  border-bottom: 1px solid rgba(168, 190, 220, 0.12);
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center 30%;
}
.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(760px 420px at 18% 10%, rgba(46, 143, 255, 0.2), transparent 60%),
    radial-gradient(600px 420px at 78% 20%, rgba(46, 230, 192, 0.12), transparent 55%),
    linear-gradient(100deg, rgba(5, 11, 22, 0.96) 0%, rgba(5, 13, 26, 0.82) 38%, rgba(5, 13, 26, 0.55) 70%, rgba(5, 13, 26, 0.72) 100%);
}
.hero-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: radial-gradient(700px 430px at 30% 20%, #000, transparent 80%);
  opacity: 0.7;
}
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.5fr);
  gap: clamp(28px, 5vw, 64px);
  align-items: center;
}
.hero-copy {
  max-width: 700px;
}
.hero-flag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--cta);
  font-size: 0.82rem;
  background: rgba(46, 230, 192, 0.07);
  border: 1px solid rgba(46, 230, 192, 0.24);
  padding: 6px 13px;
  border-radius: 999px;
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}
.pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cta);
  box-shadow: 0 0 0 0 rgba(46, 230, 192, 0.6);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(46, 230, 192, 0.45); }
  70% { box-shadow: 0 0 0 7px rgba(46, 230, 192, 0); }
  100% { box-shadow: 0 0 0 0 rgba(46, 230, 192, 0); }
}
.page-hero h1 {
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  line-height: 1.08;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #F5FAFF;
}
.hero-lead {
  color: #C0D0E4;
  max-width: 600px;
  margin-top: 20px;
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  line-height: 1.85;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}
.hero-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin-top: 24px;
  color: var(--muted);
  font-size: 0.84rem;
}
.hero-chip-row span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.hero-chip-row svg {
  width: 17px;
  height: 17px;
  color: var(--cta);
}
.hero-note {
  border-radius: 22px;
  padding: 24px 24px 22px;
  background: rgba(11, 24, 43, 0.58);
  border: 1px solid rgba(168, 190, 220, 0.18);
  box-shadow: 0 22px 50px rgba(0, 0, 0, 0.28);
  backdrop-filter: blur(14px);
}
.hero-note-head {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #E0EBFC;
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 12px;
}
.hero-note-head .note-icon {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: rgba(255, 184, 76, 0.12);
  border: 1px solid rgba(255, 184, 76, 0.24);
  color: var(--amber);
}
.hero-note p {
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.75;
  margin-bottom: 13px;
}
.hero-note .divider-dash {
  height: 1px;
  background: rgba(168, 190, 220, 0.13);
  margin: 14px 0;
}
.hero-note-foot {
  color: #7488a5;
  font-size: 0.78rem;
}

/* ---------- generic glass panel ---------- */
.glass-card {
  background: rgba(11, 24, 43, 0.58);
  border: 1px solid rgba(168, 190, 220, 0.16);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 46px rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(12px);
  transition: border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}
.glass-card:hover {
  border-color: rgba(46, 230, 192, 0.34);
  transform: translateY(-4px);
  box-shadow: 0 22px 48px rgba(0, 0, 0, 0.28), 0 0 24px rgba(46, 230, 192, 0.05);
}

/* ---------- guide / path section ---------- */
.guide-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(300px, 0.8fr);
  gap: clamp(26px, 4.5vw, 56px);
  align-items: start;
  margin-top: clamp(34px, 5vw, 56px);
}
.path-item {
  position: relative;
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 18px;
  padding-bottom: 34px;
}
.path-item:not(:last-child)::before {
  content: "";
  position: absolute;
  left: 25px;
  top: 51px;
  bottom: 2px;
  width: 1px;
  background: linear-gradient(180deg, rgba(46, 230, 192, 0.55), rgba(168, 190, 220, 0.07));
}
.path-node {
  width: 52px;
  height: 52px;
  border-radius: 17px;
  display: grid;
  place-items: center;
  background: rgba(46, 230, 192, 0.1);
  border: 1px solid rgba(46, 230, 192, 0.22);
  color: var(--cta);
  box-shadow: 0 0 20px rgba(46, 230, 192, 0.08);
}
.path-node svg {
  width: 22px;
  height: 22px;
}
.path-node.node-active {
  color: #07131e;
  background: linear-gradient(135deg, #2EE6C0, #27C9E6);
  border-color: transparent;
  box-shadow: 0 0 26px rgba(46, 230, 192, 0.3);
}
.path-content {
  padding-top: 3px;
}
.path-head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 7px;
}
.path-head h3 {
  color: #ECF4FF;
  font-size: 1.08rem;
  font-weight: 700;
}
.step-tag {
  font-size: 0.72rem;
  color: var(--cta);
  border: 1px solid rgba(46, 230, 192, 0.27);
  padding: 2px 9px;
  border-radius: 999px;
  background: rgba(46, 230, 192, 0.05);
}
.path-content p {
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.8;
}
.notice-panel {
  position: sticky;
  top: 24px;
  padding: clamp(20px, 2.5vw, 30px);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(168, 190, 220, 0.13);
}
.notice-panel-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 17px;
  color: #E6F0FF;
  font-size: 1.04rem;
  font-weight: 700;
}
.notice-panel-head span {
  width: 34px;
  height: 34px;
  border-radius: 11px;
  display: grid;
  place-items: center;
  background: rgba(255, 184, 76, 0.12);
  border: 1px solid rgba(255, 184, 76, 0.25);
}
.notice-panel-head svg {
  width: 18px;
  height: 18px;
  color: var(--amber);
}
.notice-row {
  display: flex;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px dashed rgba(168, 190, 220, 0.12);
}
.notice-row:last-child {
  border-bottom: none;
}
.notice-dot {
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--amber);
  margin-top: 11px;
  box-shadow: 0 0 8px rgba(255, 184, 76, 0.45);
}
.notice-row strong {
  color: #DCE9FB;
  font-weight: 600;
  font-size: 0.9rem;
  display: block;
}
.notice-row p {
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.65;
  margin-top: 2px;
}
.note-small {
  font-size: 0.78rem;
  color: #7187a4;
  border: 1px solid rgba(46, 143, 255, 0.2);
  background: rgba(46, 143, 255, 0.07);
  border-radius: 13px;
  padding: 11px 14px;
  margin-top: 18px;
  line-height: 1.7;
}

/* ---------- feature split image ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(28px, 5vw, 64px);
  align-items: center;
  margin-top: clamp(30px, 4.5vw, 50px);
}
.feature-media {
  position: relative;
}
.feature-media-img {
  border-radius: 24px;
  overflow: hidden;
  border: 1px solid rgba(168, 190, 220, 0.2);
  box-shadow: 0 28px 60px rgba(0, 0, 0, 0.32);
}
.feature-media-img img {
  width: 100%;
  height: clamp(320px, 46vw, 460px);
  object-fit: cover;
}
.media-badge {
  position: absolute;
  left: 18px;
  bottom: 18px;
  background: rgba(8, 17, 31, 0.78);
  border: 1px solid rgba(46, 230, 192, 0.32);
  color: #dffaf2;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  border-radius: 14px;
  padding: 10px 15px;
  font-size: 0.82rem;
  backdrop-filter: blur(9px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.3);
}
.media-badge svg {
  width: 18px;
  height: 18px;
  color: var(--cta);
}
.feature-copy .eyebrow {
  margin-bottom: 10px;
}
.feature-copy h2 {
  font-size: clamp(1.6rem, 2.8vw, 2.2rem);
  line-height: 1.28;
  font-weight: 800;
  color: #EFF6FF;
  margin-bottom: 14px;
}
.feature-copy > p {
  color: var(--muted);
  margin-bottom: 20px;
}
.check-list {
  display: flex;
  flex-direction: column;
  gap: 15px;
  margin: 22px 0;
}
.check-list li {
  display: flex;
  gap: 12px;
  line-height: 1.7;
  color: #C7D7EB;
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid rgba(168, 190, 220, 0.11);
  border-radius: 15px;
  padding: 13px 15px;
}
.check-list svg {
  width: 20px;
  height: 20px;
  flex: 0 0 20px;
  color: var(--cta);
  margin-top: 4px;
}
.check-list strong {
  display: block;
  color: #E5EFFE;
  font-weight: 600;
  font-size: 0.96rem;
}
.check-list p {
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.7;
}

/* ---------- feature chips / capability row ---------- */
.capability-panel {
  margin-top: clamp(30px, 4vw, 50px);
  display: flex;
  align-items: stretch;
  gap: 18px;
  flex-wrap: wrap;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(168, 190, 220, 0.13);
  border-radius: 22px;
  padding: clamp(18px, 3vw, 30px);
}
.capability-item {
  flex: 1 1 220px;
  padding: 8px 10px;
}
.capability-item strong {
  display: flex;
  align-items: center;
  gap: 9px;
  color: #DDEAFD;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 4px;
}
.capability-item strong i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cta);
  box-shadow: 0 0 8px rgba(46, 230, 192, 0.5);
}
.capability-item p {
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.7;
}

/* ---------- FAQ ---------- */
.faq-header {
  max-width: 720px;
}
.faq-list {
  max-width: 860px;
  margin-top: clamp(28px, 3.5vw, 46px);
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.faq-item {
  background: rgba(11, 24, 43, 0.57);
  border: 1px solid rgba(168, 190, 220, 0.16);
  border-radius: 18px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.faq-item[open] {
  border-color: rgba(46, 230, 192, 0.45);
  box-shadow: 0 14px 38px rgba(0, 0, 0, 0.18), 0 0 24px rgba(46, 230, 192, 0.045);
}
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 19px 22px;
  cursor: pointer;
  color: #DCE9FA;
  font-weight: 600;
  font-size: 1rem;
  line-height: 1.5;
  background: transparent;
  border-radius: 18px;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-icon {
  flex: 0 0 auto;
  width: 29px;
  height: 29px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(168, 190, 220, 0.28);
  color: var(--cyan);
  font-size: 1.1rem;
  font-weight: 400;
  line-height: 1;
  transition: transform 0.3s ease, background 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}
.faq-item[open] .faq-icon {
  transform: rotate(45deg);
  color: #02141c;
  background: var(--cta);
  border-color: var(--cta);
}
.faq-answer {
  padding: 0 22px 20px;
  color: var(--muted);
  line-height: 1.85;
  font-size: 0.92rem;
}
.faq-answer p {
  border-left: 2px solid rgba(46, 230, 192, 0.4);
  padding-left: 15px;
}

/* ---------- CTA band ---------- */
.cta-band {
  position: relative;
  overflow: hidden;
  padding-block: clamp(22px, 4vw, 50px);
}
.cta-card {
  position: relative;
  padding: clamp(30px, 6vw, 56px);
  border-radius: 28px;
  overflow: hidden;
  background:
    radial-gradient(600px 280px at 82% 12%, rgba(46, 230, 192, 0.12), transparent 55%),
    radial-gradient(420px 260px at 14% 88%, rgba(46, 143, 255, 0.13), transparent 55%),
    linear-gradient(130deg, rgba(11, 28, 47, 0.88), rgba(7, 17, 31, 0.88));
  border: 1px solid rgba(46, 230, 192, 0.2);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05), 0 30px 70px rgba(0, 0, 0, 0.24);
}
.cta-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
  opacity: 0.5;
  mask-image: radial-gradient(500px 300px at 80% 0%, #000, transparent 78%);
}
.cta-inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.cta-text h2 {
  font-size: clamp(1.5rem, 3vw, 2.15rem);
  line-height: 1.3;
  font-weight: 800;
  margin-bottom: 8px;
}
.cta-text p {
  color: var(--muted);
  font-size: 0.95rem;
}

/* ---------- footer ---------- */
.footer {
  background: rgba(4, 9, 18, 0.9);
  border-top: 1px solid rgba(168, 190, 220, 0.12);
  margin-top: clamp(24px, 5vh, 52px);
}
.footer-grid {
  max-width: 1260px;
  margin: 0 auto;
  padding: clamp(32px, 5vw, 50px) clamp(20px, 4vw, 48px) 28px;
  display: grid;
  grid-template-columns: 1.35fr 0.8fr 0.9fr 1fr;
  gap: 28px;
}
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-brand p {
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.7;
  max-width: 290px;
}
.footer-grid h5 {
  color: #D6E3F6;
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 15px;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 9px;
}
.footer-links a {
  color: var(--muted);
  font-size: 0.85rem;
  transition: color 0.25s ease;
}
.footer-links a:hover {
  color: var(--cta);
}
.footer-grid > div:last-child p {
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.75;
}
.footer-copyright {
  border-top: 1px solid rgba(168, 190, 220, 0.1);
  max-width: 1260px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 22px;
  justify-content: space-between;
  padding: 17px clamp(20px, 4vw, 48px);
  color: #5e738e;
  font-size: 0.78rem;
}
.footer-brand .brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: rgba(46, 230, 192, 0.08);
  border-color: rgba(46, 230, 192, 0.3);
}
.brand-name {
  font-weight: 800;
  color: #E8F2FF;
  font-size: 1rem;
}

/* ---------- responsive ---------- */
@media (max-width: 1180px) {
  .hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(260px, 0.44fr);
    gap: 24px;
  }
  .guide-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(270px, 0.85fr);
    gap: 28px;
  }
}
@media (max-width: 1024px) {
  .main-wrap {
    margin-left: 0;
  }
  .side-bar {
    width: min(316px, 84vw);
    transform: translateX(-105%);
    transition: transform 0.35s cubic-bezier(0.2, 0.8, 0.2, 1);
    box-shadow: 30px 0 80px rgba(0, 0, 0, 0.45);
  }
  .side-close {
    display: grid;
  }
  .mobile-header {
    display: flex;
  }
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .hero-note {
    max-width: 560px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 26px;
  }
}
@media (max-width: 768px) {
  body {
    font-size: 15px;
  }
  .section {
    padding-top: 54px;
    padding-bottom: 54px;
  }
  .guide-grid,
  .feature-grid {
    grid-template-columns: 1fr;
    gap: 26px;
  }
  .notice-panel {
    position: static;
  }
  .path-item {
    grid-template-columns: 44px 1fr;
    gap: 14px;
  }
  .path-node {
    width: 44px;
    height: 44px;
    border-radius: 14px;
  }
  .path-item:not(:last-child)::before {
    left: 21px;
  }
  .page-hero {
    min-height: auto;
    padding-top: 54px;
    padding-bottom: 54px;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .feature-media-img img {
    height: 250px;
  }
  .cta-inner {
    flex-direction: column;
    align-items: flex-start;
  }
  .cta-inner .btn {
    width: 100%;
  }
  .faq-item summary {
    padding: 16px 16px;
    font-size: 0.9rem;
  }
  .faq-answer {
    padding: 0 16px 18px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-copyright {
    flex-direction: column;
    align-items: flex-start;
  }
}
@media (max-width: 520px) {
  .container {
    padding-left: 18px;
    padding-right: 18px;
  }
  .brand-text {
    font-size: 0.96rem;
  }
  .page-hero h1 {
    font-size: 2.15rem;
  }
  .section-title {
    font-size: 1.6rem;
  }
  .hero-flag {
    font-size: 0.75rem;
  }
  .hero-chip-row {
    gap: 8px 12px;
    font-size: 0.8rem;
  }
  .path-content p {
    font-size: 0.88rem;
  }
  .check-list li {
    padding: 12px;
  }
  .faq-item summary {
    gap: 10px;
  }
  .faq-icon {
    width: 25px;
    height: 25px;
    border-radius: 8px;
    font-size: 1rem;
  }
}

/* roulang page: category2 */
:root {
  --bg: #08111F;
  --bg-2: #0B1B30;
  --panel: rgba(16, 28, 48, 0.66);
  --glass: rgba(255, 255, 255, 0.04);
  --line: rgba(168, 190, 220, 0.15);
  --text: #E8F1FF;
  --muted: #9FB0C8;
  --blue: #2E8FFF;
  --cyan: #2EE6C0;
  --amber: #FFB84C;
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --font: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

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

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

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

button,
input {
  font-family: inherit;
}

ul,
ol {
  list-style: none;
}

svg {
  flex-shrink: 0;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Layout */
.app-shell {
  min-height: 100vh;
}

.main-area {
  margin-left: 220px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Sidebar */
.side-nav-wrap {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 220px;
  background: #0A1424;
  border-right: 1px solid var(--line);
  padding: 22px 14px 18px;
  display: flex;
  flex-direction: column;
  z-index: 60;
  overflow-y: auto;
}

.brand-side {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 6px 8px 22px;
  border-bottom: 1px solid var(--line);
  text-align: center;
}

.brand-symbol {
  width: 48px;
  height: 48px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(46, 230, 192, 0.16), rgba(46, 143, 255, 0.08));
  border: 1px solid rgba(46, 230, 192, 0.34);
  box-shadow: 0 0 22px rgba(46, 230, 192, 0.16);
}

.brand-name {
  font-weight: 800;
  font-size: 15px;
  letter-spacing: 0.02em;
  color: var(--text);
}

.brand-sub {
  font-size: 11px;
  color: var(--muted);
}

.side-nav {
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 5px;
  padding: 20px 4px;
}

.nav-section-label {
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.16em;
  padding: 0 12px 8px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 11px 12px;
  border-radius: 13px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
  position: relative;
  transition: background 0.25s, color 0.25s, border-color 0.25s;
  border: 1px solid transparent;
}

.nav-item svg {
  width: 18px;
  height: 18px;
}

.nav-item:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
}

.nav-item.active {
  color: var(--text);
  background: rgba(46, 230, 192, 0.08);
  border-color: rgba(46, 230, 192, 0.2);
}

.nav-item.active::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 20px;
  background: var(--cyan);
  border-radius: 3px;
  box-shadow: 0 0 12px var(--cyan);
}

.nav-badge {
  margin-left: auto;
  background: rgba(255, 184, 76, 0.14);
  color: var(--amber);
  font-size: 10px;
  padding: 2px 7px;
  border-radius: 999px;
  font-weight: 700;
  border: 1px solid rgba(255, 184, 76, 0.22);
}

.side-help {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  border-radius: 16px;
  padding: 14px;
  margin-top: 12px;
}

.side-state {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 12px;
}

.state-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(46, 230, 192, 0.16);
}

.side-inner-btn {
  margin-top: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 11px;
  border: 1px solid rgba(46, 230, 192, 0.25);
  background: rgba(46, 230, 192, 0.07);
  color: var(--cyan);
  font-size: 13px;
  font-weight: 600;
  padding: 8px 10px;
  transition: all 0.25s;
}

.side-inner-btn:hover {
  background: rgba(46, 230, 192, 0.13);
  border-color: rgba(46, 230, 192, 0.45);
}

/* Mobile topbar */
.mobile-topbar {
  display: none;
}

.mobile-topbar {
  position: sticky;
  top: 0;
  z-index: 80;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: rgba(8, 17, 31, 0.9);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line);
}

.mobile-topbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 800;
  color: var(--text);
}

.mobile-menu-btn {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--text);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  cursor: pointer;
  transition: 0.2s;
}

.mobile-menu-btn:hover {
  border-color: rgba(46, 230, 192, 0.35);
  color: var(--cyan);
}

.mobile-menu-btn:focus-visible,
.nav-item:focus-visible,
.btn-primary:focus-visible,
.btn-ghost:focus-visible,
.faq-q:focus-visible {
  outline: 2px solid rgba(46, 230, 192, 0.55);
  outline-offset: 2px;
}

/* Drawer */
.mobile-drawer {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 300px;
  max-width: 86vw;
  background: rgba(8, 15, 29, 0.98);
  backdrop-filter: blur(22px);
  border-right: 1px solid rgba(168, 190, 220, 0.14);
  padding: 22px 16px;
  z-index: 130;
  transform: translateX(-105%);
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.mobile-drawer.is-open {
  transform: translateX(0);
}

.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(3, 8, 16, 0.7);
  z-index: 120;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}

.drawer-overlay.is-visible {
  opacity: 1;
  pointer-events: auto;
}

.drawer-close {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--muted);
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  align-self: flex-end;
  transition: 0.2s;
}

.drawer-close:hover {
  color: var(--cyan);
  border-color: rgba(46, 230, 192, 0.35);
}

.drawer-nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 20px;
}

.drawer-nav .nav-item {
  padding: 13px 14px;
}

/* Breadcrumb */
.crumb {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
  flex-wrap: wrap;
  position: relative;
  z-index: 3;
}

.crumb a {
  color: var(--muted);
  transition: color 0.2s;
}

.crumb a:hover {
  color: var(--cyan);
}

.crumb-sep {
  opacity: 0.45;
}

/* Hero */
.cat-hero {
  min-height: 380px;
  padding: 48px 24px 56px;
  display: flex;
  align-items: center;
  position: relative;
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(100deg, rgba(7, 13, 24, 0.94) 0%, rgba(11, 27, 48, 0.58) 45%, rgba(8, 17, 31, 0.8) 100%),
    radial-gradient(circle at 80% 20%, rgba(46, 230, 192, 0.15) 0%, transparent 42%),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  isolation: isolate;
  overflow: hidden;
}

.cat-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(rgba(46, 230, 192, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(46, 230, 192, 0.05) 1px, transparent 1px);
  background-size: 54px 54px;
  opacity: 0.4;
  mask-image: linear-gradient(to right, black, transparent 76%);
  -webkit-mask-image: linear-gradient(to right, black, transparent 76%);
}

.cat-hero-content {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

.cat-hero .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--cyan);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-shadow: 0 0 16px rgba(46, 230, 192, 0.35);
  margin-bottom: 20px;
}

.cat-hero .eyebrow::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 12px var(--cyan);
}

.cat-hero h1 {
  font-size: clamp(2.5rem, 5vw, 3.8rem);
  line-height: 1.14;
  font-weight: 800;
  letter-spacing: 0.02em;
  margin-bottom: 14px;
}

.cat-hero__lead {
  color: var(--muted);
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  max-width: 660px;
  line-height: 1.8;
}

/* Buttons */
.btn-primary,
.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 700;
  padding: 12px 26px;
  cursor: pointer;
  transition: transform 0.25s, box-shadow 0.25s, background 0.25s, border-color 0.25s, filter 0.25s;
}

.btn-primary {
  background: linear-gradient(135deg, #2EE6C0, #1ECDA8);
  color: #051A15;
  border: none;
  box-shadow: 0 0 28px rgba(46, 230, 192, 0.2), inset 0 1px rgba(255, 255, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  filter: brightness(1.05);
  box-shadow: 0 0 42px rgba(46, 230, 192, 0.34);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 0 16px rgba(46, 230, 192, 0.18);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  border: 1px solid var(--line);
}

.btn-ghost:hover {
  border-color: rgba(46, 230, 192, 0.5);
  background: rgba(46, 230, 192, 0.08);
  transform: translateY(-2px);
}

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

.btn-lg {
  padding: 14px 32px;
  font-size: 15px;
}

.btn-xl {
  padding: 17px 44px;
  font-size: 17px;
}

/* Link */
.link-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--blue);
  font-size: 14px;
  font-weight: 600;
  transition: color 0.25s;
}

.link-more span {
  transition: transform 0.25s;
}

.link-more:hover {
  color: var(--cyan);
}

.link-more:hover span {
  transform: translateX(5px);
}

/* Section base */
.section-block {
  padding: 70px clamp(20px, 4vw, 56px);
  position: relative;
}

.section-block + .section-block {
  border-top: 1px solid rgba(168, 190, 220, 0.07);
}

.section-tone {
  background: #091426;
}

.section-inner {
  max-width: 1200px;
  margin: 0 auto;
}

/* Section heading */
.sec-head {
  margin-bottom: 34px;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.sec-kicker {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
}

.sec-kicker::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan);
}

.sec-head h2 {
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  line-height: 1.2;
  margin-top: 8px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: 0.01em;
}

.sec-head p.lead {
  color: var(--muted);
  margin-top: 10px;
  max-width: 680px;
  font-size: 15px;
}

/* Badge / tag */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 13px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  border: 1px solid;
}

.tag-cyan {
  color: var(--cyan);
  border-color: rgba(46, 230, 192, 0.32);
  background: rgba(46, 230, 192, 0.08);
}

.tag-amber {
  color: var(--amber);
  border-color: rgba(255, 184, 76, 0.34);
  background: rgba(255, 184, 76, 0.08);
}

.badge {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 4;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(8, 17, 31, 0.72);
  border: 1px solid var(--line);
  backdrop-filter: blur(12px);
  color: var(--text);
  font-size: 12px;
  font-weight: 700;
}

.badge::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(46, 230, 192, 0.18);
}

/* Feature event */
.feature-card {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.26);
  backdrop-filter: blur(10px);
}

.feature-card__media {
  position: relative;
  min-height: 340px;
}

.feature-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  inset: 0;
}

.feature-card__content {
  padding: clamp(24px, 4vw, 42px);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.feature-card__content h3 {
  font-size: clamp(1.35rem, 2.2vw, 2rem);
  line-height: 1.3;
  margin: 14px 0 12px;
  font-weight: 800;
}

.feature-card__content p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
}

.divider {
  border-top: 1px solid var(--line);
  margin: 20px 0;
}

.event-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-size: 13px;
}

.event-meta svg {
  width: 18px;
  height: 18px;
  color: var(--cyan);
}

.reward-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255, 184, 76, 0.25);
  background: rgba(255, 184, 76, 0.06);
  color: #FFD9A0;
  font-size: 12px;
  font-weight: 600;
}

.reward-pill svg {
  width: 14px;
  height: 14px;
  color: var(--amber);
}

.feature-cta-row {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-top: 24px;
}

/* Events grid */
.events-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
  align-items: start;
  max-width: 1200px;
  margin: 0 auto;
}

.event-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  backdrop-filter: blur(8px);
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}

.event-card:nth-child(even) {
  transform: translateY(30px);
}

.event-card:hover {
  border-color: rgba(46, 230, 192, 0.36);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.26);
}

.event-card:nth-child(odd):hover {
  transform: translateY(-5px);
}

.event-card:nth-child(even):hover {
  transform: translateY(20px);
}

.event-card__media {
  position: relative;
}

.event-card__media img {
  width: 100%;
  height: 190px;
  object-fit: cover;
}

.event-card__body {
  padding: 20px 22px 24px;
}

.event-card__body h3 {
  font-size: 17px;
  line-height: 1.45;
  font-weight: 700;
  margin: 10px 0 8px;
}

.event-card__body p {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.75;
}

.event-inline {
  margin-top: 16px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}

.event-date {
  color: var(--muted);
  font-size: 12.5px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.event-date svg {
  width: 16px;
  height: 16px;
  color: var(--blue);
}

.mini-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--cyan);
  background: rgba(46, 230, 192, 0.07);
  border: 1px solid rgba(46, 230, 192, 0.24);
  font-size: 13px;
  font-weight: 700;
  padding: 7px 14px;
  border-radius: 999px;
  transition: all 0.25s;
}

.mini-btn:hover {
  background: rgba(46, 230, 192, 0.14);
  border-color: rgba(46, 230, 192, 0.45);
}

.reward-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

/* Info band */
.info-band {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  border-radius: 18px;
  border: 1px dashed rgba(46, 230, 192, 0.3);
  background: rgba(46, 230, 192, 0.05);
  padding: 16px 20px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
}

.info-band svg {
  width: 18px;
  height: 18px;
  margin-top: 3px;
  color: var(--cyan);
}

/* Flow */
.flow-track {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  max-width: 1200px;
  margin: 0 auto;
}

.flow-step {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 26px 22px 24px;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}

.flow-step::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 56%;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), transparent);
  border-radius: 999px;
  opacity: 0.7;
}

.flow-step:hover {
  border-color: rgba(46, 230, 192, 0.38);
  transform: translateY(-5px);
  box-shadow: 0 16px 46px rgba(0, 0, 0, 0.2);
}

.flow-num {
  position: absolute;
  top: 16px;
  right: 20px;
  font-size: 38px;
  font-weight: 800;
  color: rgba(232, 241, 255, 0.06);
  line-height: 1;
}

.flow-icon {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(46, 230, 192, 0.08);
  border: 1px solid rgba(46, 230, 192, 0.22);
  color: var(--cyan);
}

.flow-icon svg {
  width: 21px;
  height: 21px;
}

.flow-step h3 {
  margin-top: 16px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}

.flow-step p {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.75;
  margin-top: 8px;
}

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

.faq-item {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  margin-bottom: 14px;
  overflow: hidden;
  backdrop-filter: blur(8px);
  transition: border-color 0.3s, box-shadow 0.3s;
}

.faq-item.open {
  border-color: rgba(46, 230, 192, 0.46);
  box-shadow: 0 0 22px rgba(46, 230, 192, 0.06);
}

.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  background: transparent;
  border: none;
  color: var(--text);
  font-size: 15px;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  transition: color 0.2s;
}

.faq-q:hover {
  color: var(--cyan);
}

.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 9px;
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cyan);
  flex-shrink: 0;
  transition: transform 0.3s, border-color 0.3s, background 0.3s;
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
  background: rgba(46, 230, 192, 0.1);
  border-color: rgba(46, 230, 192, 0.55);
}

.faq-a {
  display: none;
  padding: 0 22px 20px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.85;
}

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

/* CTA band */
.cta-section {
  padding: 36px clamp(20px, 4vw, 56px) 88px;
}

.cta-band {
  max-width: 1200px;
  margin: 0 auto;
  border-radius: 32px;
  padding: 70px 26px;
  position: relative;
  overflow: hidden;
  text-align: center;
  border: 1px solid var(--line);
  background:
    linear-gradient(115deg, rgba(7, 13, 24, 0.9) 0%, rgba(8, 17, 31, 0.72) 100%),
    radial-gradient(circle at 50% 0%, rgba(46, 230, 192, 0.16), transparent 55%),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
}

.cta-band::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(46, 230, 192, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(46, 230, 192, 0.04) 1px, transparent 1px);
  background-size: 52px 52px;
  opacity: 0.3;
  pointer-events: none;
}

.cta-band__inner {
  position: relative;
  z-index: 2;
}

.cta-band h2 {
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  font-weight: 800;
  margin-top: 8px;
}

.cta-band p {
  color: var(--muted);
  max-width: 620px;
  margin: 12px auto 26px;
  font-size: 14px;
  line-height: 1.8;
}

.cta-note {
  display: block;
  color: #7E90AA;
  font-size: 12px;
  margin-top: 16px;
}

/* Footer */
.footer {
  border-top: 1px solid var(--line);
  background: #060E1B;
  padding: 44px clamp(20px, 4vw, 56px) 24px;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.8fr 0.9fr 1fr;
  gap: 28px;
  max-width: 1200px;
  margin: 0 auto;
}

.footer h5 {
  color: var(--text);
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 14px;
  letter-spacing: 0.02em;
}

.footer-brand p {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.8;
  max-width: 300px;
  margin-top: 10px;
}

.brand-mark {
  width: 30px;
  height: 30px;
  border-radius: 9px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(46, 230, 192, 0.08);
  border: 1px solid rgba(46, 230, 192, 0.24);
}

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

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.footer-links a {
  color: var(--muted);
  font-size: 13px;
  transition: color 0.2s, transform 0.2s;
  width: fit-content;
}

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

.footer p {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.8;
}

.footer-copyright {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: space-between;
  border-top: 1px solid var(--line);
  margin-top: 36px;
  padding-top: 20px;
  color: #7286A6;
  font-size: 12px;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

/* Responsive */
@media (max-width: 1024px) {
  .side-nav-wrap {
    display: none;
  }

  .main-area {
    margin-left: 0;
  }

  .mobile-topbar {
    display: flex;
  }

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

@media (max-width: 768px) {
  .cat-hero {
    min-height: 360px;
    padding-top: 36px;
    padding-bottom: 42px;
  }

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

  .feature-card__media {
    min-height: 220px;
  }

  .feature-card__media img {
    position: relative;
    height: 220px;
  }

  .feature-card__content h3 {
    font-size: 1.35rem;
  }

  .events-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .event-card:nth-child(even) {
    transform: none;
  }

  .event-card:nth-child(even):hover,
  .event-card:nth-child(odd):hover {
    transform: translateY(-4px);
  }

  .event-card__media img {
    height: 160px;
  }

  .flow-track {
    grid-template-columns: minmax(0, 1fr);
  }

  .section-block {
    padding-top: 52px;
    padding-bottom: 52px;
  }

  .cta-band {
    padding: 48px 22px;
  }

  .footer-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 22px;
  }

  .footer-brand p {
    max-width: 100%;
  }

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

@media (max-width: 520px) {
  .event-inline {
    flex-direction: column;
  }

  .crumb {
    font-size: 12px;
  }

  .btn-lg {
    width: 100%;
  }

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

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

/* roulang page: category3 */
:root {
    --bg: #08111f;
    --bg-deep: #050c15;
    --bg-panel: #0b1b30;
    --panel-glass: rgba(16, 28, 48, 0.66);
    --glass: rgba(255, 255, 255, 0.04);
    --text: #e8f1ff;
    --text-2: #9fb0c8;
    --text-3: #6b7f9c;
    --brand: #2e8fff;
    --cta: #2ee6c0;
    --gold: #ffb84c;
    --line: rgba(168, 190, 220, 0.15);
    --radius-lg: 24px;
    --radius: 16px;
    --radius-sm: 10px;
    --shadow: 0 24px 60px rgba(0, 0, 0, 0.24);
    --glow-cta: 0 0 24px rgba(46, 230, 192, 0.32);
    --font-cn: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  }

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

  html {
    scroll-behavior: smooth;
  }

  body {
    margin: 0;
    background:
      radial-gradient(1000px 600px at 78% -8%, rgba(46, 143, 255, 0.10), transparent 62%),
      radial-gradient(800px 500px at -10% 28%, rgba(46, 230, 192, 0.06), transparent 55%),
      var(--bg);
    color: var(--text);
    font-family: var(--font-cn);
    font-size: 16px;
    line-height: 1.7;
    min-height: 100vh;
    overflow-x: hidden;
  }

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

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

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

  h1,
  h2,
  h3,
  h4,
  h5,
  p,
  figure,
  blockquote {
    margin: 0;
  }

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

  a:focus-visible,
  button:focus-visible {
    outline: 2px solid rgba(46, 230, 192, 0.85);
    outline-offset: 3px;
    border-radius: 8px;
  }

  section,
  footer,
  header {
    scroll-margin-top: 90px;
  }

  .page-wrap {
    min-height: 100vh;
  }

  .side-shell {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    width: 220px;
    z-index: 80;
    background: rgba(7, 15, 26, 0.96);
    border-right: 1px solid var(--line);
    backdrop-filter: blur(18px);
    display: flex;
    flex-direction: column;
    padding: 28px 16px 22px;
  }

  .side-inner {
    display: flex;
    flex-direction: column;
    height: 100%;
  }

  .brand-lockup {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0 4px;
    border-radius: 16px;
  }

  .brand-mark {
    width: 46px;
    height: 46px;
    flex: 0 0 auto;
    border-radius: 15px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(46, 230, 192, 0.08);
    border: 1px solid rgba(46, 230, 192, 0.26);
    box-shadow: inset 0 0 16px rgba(46, 230, 192, 0.05), 0 0 18px rgba(46, 230, 192, 0.1);
  }

  .brand-mark svg {
    width: 26px;
    height: 26px;
  }

  .brand-copy {
    display: flex;
    flex-direction: column;
    gap: 1px;
    min-width: 0;
  }

  .brand-name {
    font-size: 1.05rem;
    font-weight: 800;
    letter-spacing: 0.01em;
    color: var(--text);
    line-height: 1.25;
    white-space: nowrap;
  }

  .brand-sub {
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    color: var(--text-3);
  }

  .side-nav {
    display: flex;
    flex-direction: column;
    margin-top: 34px;
    position: relative;
  }

  .nav-section-label {
    font-size: 0.68rem;
    letter-spacing: 0.18em;
    color: rgba(159, 176, 200, 0.52);
    text-transform: uppercase;
    padding: 0 10px;
    margin-bottom: 8px;
  }

  .nav-item {
    position: relative;
    display: flex;
    align-items: center;
    gap: 11px;
    padding: 10px 12px;
    margin: 4px 0;
    border-radius: 13px;
    color: var(--text-2);
    font-size: 0.95rem;
    line-height: 1.4;
    border: 1px solid transparent;
    transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
  }

  .nav-item svg {
    width: 18px;
    height: 18px;
    flex: 0 0 auto;
    color: #6e86a8;
    transition: color 0.2s ease;
  }

  .nav-item:hover {
    color: #e4efff;
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(168, 190, 220, 0.08);
    transform: translateX(2px);
  }

  .nav-item.active {
    color: #fff;
    background: rgba(46, 230, 192, 0.09);
    border-color: rgba(46, 230, 192, 0.16);
  }

  .nav-item.active::before {
    content: "";
    position: absolute;
    left: -5px;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 22px;
    border-radius: 0 4px 4px 0;
    background: var(--cta);
    box-shadow: 0 0 14px rgba(46, 230, 192, 0.8);
  }

  .nav-item.active svg {
    color: var(--cta);
  }

  .nav-badge {
    margin-left: auto;
    background: rgba(46, 230, 192, 0.12);
    color: var(--cta);
    font-size: 0.64rem;
    padding: 2px 8px;
    border-radius: 999px;
    letter-spacing: 0.04em;
    border: 1px solid rgba(46, 230, 192, 0.24);
  }

  .side-footer {
    margin-top: auto;
    padding: 22px 0 0;
    border-top: 1px solid rgba(168, 190, 220, 0.1);
  }

  .side-note {
    margin-top: 14px;
    font-size: 0.72rem;
    color: var(--text-3);
    line-height: 1.6;
  }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px 22px;
    border-radius: 999px;
    border: 1px solid transparent;
    font-weight: 600;
    font-size: 0.95rem;
    line-height: 1.4;
    white-space: nowrap;
    cursor: pointer;
    transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
  }

  .btn-primary {
    background: linear-gradient(135deg, #23cfa8, #2ee6c0 55%, #55f0d0);
    color: #04251d;
    box-shadow: 0 0 22px rgba(46, 230, 192, 0.24), inset 0 1px 0 rgba(255, 255, 255, 0.26);
    font-weight: 800;
  }

  .btn-primary:hover {
    filter: brightness(1.07);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(46, 230, 192, 0.26);
  }

  .btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 0 14px rgba(46, 230, 192, 0.2);
  }

  .btn-ghost {
    background: rgba(16, 28, 48, 0.4);
    color: #f0f6ff;
    border-color: rgba(168, 190, 220, 0.28);
  }

  .btn-ghost:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(210, 230, 255, 0.55);
    transform: translateY(-2px);
  }

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

  .btn-sm {
    padding: 7px 14px;
    font-size: 0.85rem;
  }

  .btn-xl {
    padding: 15px 32px;
    font-size: 1rem;
  }

  .mobile-header {
    display: none;
    z-index: 100;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 66px;
    padding: 0 18px;
    background: rgba(7, 15, 26, 0.88);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--line);
    align-items: center;
    justify-content: space-between;
  }

  .mobile-header .brand-name {
    font-size: 0.95rem;
  }

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

  .mobile-brand .brand-mark {
    width: 38px;
    height: 38px;
    border-radius: 12px;
  }

  .nav-toggle {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--line);
    color: var(--text);
    cursor: pointer;
  }

  .nav-toggle:hover {
    background: rgba(46, 230, 192, 0.08);
  }

  .drawer-layer {
    position: fixed;
    inset: 0;
    z-index: 200;
    visibility: hidden;
    transition: visibility 0.3s ease;
  }

  .drawer-layer.is-open {
    visibility: visible;
  }

  .drawer-mask {
    position: absolute;
    inset: 0;
    border: 0;
    background: rgba(3, 8, 16, 0.62);
    backdrop-filter: blur(4px);
    opacity: 0;
    transition: opacity 0.3s ease;
  }

  .drawer-layer.is-open .drawer-mask {
    opacity: 1;
  }

  .drawer {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    width: min(300px, 84vw);
    background: rgba(7, 15, 27, 0.98);
    border-right: 1px solid var(--line);
    padding: 22px 16px;
    display: flex;
    flex-direction: column;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    box-shadow: 20px 0 60px rgba(0, 0, 0, 0.3);
  }

  .drawer-layer.is-open .drawer {
    transform: translateX(0);
  }

  .drawer-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--line);
  }

  .drawer-close {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    color: var(--text-2);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(168, 190, 220, 0.14);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .drawer-close:hover {
    color: var(--cta);
    border-color: rgba(46, 230, 192, 0.4);
  }

  .drawer .side-nav {
    margin-top: 20px;
    flex: 1 1 auto;
  }

  .drawer .nav-item.active::before {
    left: -7px;
  }

  .drawer-foot {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding-top: 14px;
    border-top: 1px solid rgba(168, 190, 220, 0.1);
  }

  .drawer .btn {
    width: 100%;
  }

  .page-content {
    margin-left: 220px;
    min-height: 100vh;
    position: relative;
  }

  .container-page {
    max-width: 1240px;
    margin: 0 auto;
    padding-left: clamp(24px, 5vw, 56px);
    padding-right: clamp(24px, 5vw, 56px);
  }

  .page-main {
    min-height: calc(100vh - 280px);
  }

  .page-hero {
    position: relative;
    min-height: 74vh;
    display: flex;
    align-items: center;
    padding: 130px 0 76px;
    overflow: hidden;
    border-bottom: 1px solid rgba(168, 190, 220, 0.12);
  }

  .hero-bg {
    position: absolute;
    inset: 0;
    background:
      linear-gradient(108deg, rgba(6, 14, 25, 0.96) 0%, rgba(9, 22, 39, 0.82) 38%, rgba(11, 28, 52, 0.5) 72%, rgba(8, 17, 31, 0.42) 100%),
      url("/assets/images/backpic/back-1.png") center / cover no-repeat;
  }

  .hero-bg::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
      linear-gradient(rgba(168, 190, 220, 0.07) 1px, transparent 1px),
      linear-gradient(90deg, rgba(168, 190, 220, 0.07) 1px, transparent 1px);
    background-size: 72px 72px;
    mask-image: radial-gradient(700px 500px at 30% 30%, #000, transparent 75%);
  }

  .hero-bg::after {
    content: "";
    position: absolute;
    right: 2%;
    bottom: -30%;
    width: 460px;
    height: 460px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(46, 143, 255, 0.18), transparent 60%);
    filter: blur(10px);
  }

  .hero-inner {
    position: relative;
    z-index: 2;
  }

  .breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 0.78rem;
    color: var(--text-3);
    margin-bottom: 22px;
  }

  .breadcrumb a {
    color: var(--text-2);
    transition: color 0.2s ease;
  }

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

  .crumb-sep {
    opacity: 0.5;
  }

  .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    font-size: 0.78rem;
    letter-spacing: 0.1em;
    color: var(--cta);
    background: rgba(46, 230, 192, 0.08);
    border: 1px solid rgba(46, 230, 192, 0.2);
    padding: 6px 14px;
    border-radius: 999px;
  }

  .eyebrow-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--cta);
    box-shadow: 0 0 12px var(--cta);
  }

  .page-hero h1 {
    font-size: clamp(2.6rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.14;
    letter-spacing: -0.03em;
    margin-top: 22px;
    color: #f4f9ff;
    max-width: 780px;
  }

  .hero-lead {
    margin-top: 24px;
    max-width: 650px;
    color: var(--text-2);
    font-size: clamp(1rem, 1.6vw, 1.14rem);
    line-height: 1.8;
  }

  .hero-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 14px;
    margin-top: 38px;
  }

  .hero-note {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 34px;
    font-size: 0.84rem;
    color: var(--text-3);
  }

  .pulse-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--cta);
    box-shadow: 0 0 0 0 rgba(46, 230, 192, 0.35);
    animation: pulse 2.4s infinite;
  }

  @keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(46, 230, 192, 0.4); opacity: 1; }
    50% { box-shadow: 0 0 0 9px rgba(46, 230, 192, 0); opacity: 0.6; }
  }

  .section {
    padding: 104px 0;
  }

  .section-header {
    max-width: 900px;
  }

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

  .section-kicker {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--cta);
    font-size: 0.78rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
  }

  .section-kicker::before {
    content: "";
    width: 20px;
    height: 1px;
    background: linear-gradient(90deg, var(--cta), transparent);
  }

  .section-header.center .section-kicker::after {
    content: "";
    width: 20px;
    height: 1px;
    background: linear-gradient(-90deg, var(--cta), transparent);
  }

  .section-title {
    margin-top: 14px;
    font-size: clamp(1.6rem, 3vw, 2.45rem);
    font-weight: 800;
    line-height: 1.3;
    letter-spacing: -0.02em;
    color: #eef5ff;
  }

  .section-lead {
    margin-top: 18px;
    color: var(--text-2);
    font-size: 1rem;
    line-height: 1.85;
    max-width: 820px;
  }

  .section-header.center .section-lead {
    margin-left: auto;
    margin-right: auto;
  }

  .soft-card {
    background: linear-gradient(150deg, rgba(255, 255, 255, 0.055), rgba(16, 28, 48, 0.42));
    border: 1px solid rgba(168, 190, 220, 0.16);
    border-radius: 24px;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04), 0 24px 55px rgba(0, 0, 0, 0.16);
    backdrop-filter: blur(12px);
  }

  .overview-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 28px;
    margin-top: 52px;
  }

  .feature-list {
    padding: 26px;
    display: grid;
    gap: 8px;
  }

  .feature-item {
    display: grid;
    grid-template-columns: 48px 1fr;
    column-gap: 16px;
    padding: 20px 4px;
    border-bottom: 1px dashed rgba(168, 190, 220, 0.14);
    transition: transform 0.2s ease, background 0.2s ease;
  }

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

  .feature-item:hover {
    transform: translateX(5px);
    background: rgba(255, 255, 255, 0.025);
    border-radius: 16px;
    padding-left: 12px;
  }

  .feature-icon {
    width: 46px;
    height: 46px;
    border-radius: 15px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(46, 143, 255, 0.1);
    border: 1px solid rgba(46, 143, 255, 0.18);
    color: #9fcaff;
  }

  .feature-icon svg {
    width: 22px;
    height: 22px;
  }

  .feature-item h3 {
    font-size: 1.02rem;
    font-weight: 700;
    color: #eaf3ff;
    line-height: 1.5;
  }

  .feature-item p {
    margin-top: 7px;
    color: var(--text-2);
    font-size: 0.92rem;
    line-height: 1.75;
  }

  .overview-visual {
    min-height: 440px;
  }

  .frame-card {
    position: relative;
    height: 100%;
    min-height: 440px;
    border-radius: 24px;
    overflow: hidden;
    border: 1px solid rgba(168, 190, 220, 0.16);
    box-shadow: var(--shadow);
  }

  .frame-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
  }

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

  .frame-grad {
    position: absolute;
    inset: auto 0 0 0;
    height: 60%;
    background: linear-gradient(180deg, transparent, rgba(6, 13, 25, 0.3) 35%, rgba(6, 13, 25, 0.92));
  }

  .frame-caption {
    position: absolute;
    left: 24px;
    right: 24px;
    bottom: 24px;
    z-index: 2;
  }

  .frame-caption h3 {
    font-size: 1.35rem;
    font-weight: 800;
    color: #fff;
    margin-top: 12px;
  }

  .frame-caption p {
    margin-top: 6px;
    color: rgba(225, 237, 255, 0.78);
    font-size: 0.9rem;
  }

  .tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 11px;
    border-radius: 999px;
    font-size: 0.72rem;
    letter-spacing: 0.04em;
  }

  .tag-amber {
    color: var(--gold);
    background: rgba(255, 184, 76, 0.12);
    border: 1px solid rgba(255, 184, 76, 0.26);
  }

  .tag-teal {
    color: var(--cta);
    background: rgba(46, 230, 192, 0.1);
    border: 1px solid rgba(46, 230, 192, 0.2);
  }

  .journey-panel {
    margin-top: 56px;
    padding: 48px 40px 60px;
    position: relative;
    overflow: hidden;
  }

  .journey-panel::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(480px 240px at 24% 20%, rgba(46, 143, 255, 0.1), transparent 70%);
  }

  .journey-track {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
  }

  .journey-track::before {
    content: "";
    position: absolute;
    top: 31px;
    left: 7%;
    right: 7%;
    border-top: 1px dashed rgba(46, 230, 192, 0.3);
  }

  .journey-step {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
  }

  .step-dot {
    width: 62px;
    height: 62px;
    border-radius: 20px;
    background: rgba(8, 17, 31, 0.9);
    border: 1px solid rgba(46, 230, 192, 0.36);
    color: var(--cta);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    font-weight: 800;
    box-shadow: 0 0 0 6px rgba(46, 230, 192, 0.06), 0 0 24px rgba(46, 230, 192, 0.12);
  }

  .journey-step h3 {
    font-size: 1rem;
    font-weight: 700;
    color: #e5efff;
    margin-top: 22px;
  }

  .journey-step p {
    color: var(--text-2);
    font-size: 0.9rem;
    line-height: 1.75;
    margin-top: 8px;
    max-width: 220px;
  }

  .path-tip {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-top: 40px;
    font-size: 0.88rem;
    color: var(--text-3);
    background: rgba(255, 255, 255, 0.025);
    border: 1px solid rgba(168, 190, 220, 0.11);
    padding: 14px 18px;
    border-radius: 16px;
  }

  .path-tip svg {
    width: 18px;
    height: 18px;
    color: var(--gold);
    flex: 0 0 auto;
    margin-top: 2px;
  }

  .table-card {
    margin-top: 54px;
    border-radius: 24px;
    overflow: hidden;
    border: 1px solid rgba(168, 190, 220, 0.15);
    background: rgba(11, 24, 45, 0.5);
    box-shadow: var(--shadow);
  }

  .table-wrap {
    overflow-x: auto;
  }

  .level-table {
    width: 100%;
    min-width: 880px;
    border-collapse: collapse;
    text-align: left;
  }

  .level-table th {
    padding: 20px 22px;
    font-size: 0.8rem;
    font-weight: 700;
    color: #b9c9de;
    background: rgba(255, 255, 255, 0.035);
    border-bottom: 1px solid var(--line);
    letter-spacing: 0.02em;
    white-space: nowrap;
  }

  .level-table td {
    padding: 22px;
    vertical-align: top;
    border-bottom: 1px solid rgba(168, 190, 220, 0.1);
    background: transparent;
    font-size: 0.92rem;
    color: var(--text-2);
    line-height: 1.8;
    transition: background 0.2s ease;
  }

  .level-table tbody tr:last-child td {
    border-bottom: 0;
  }

  .level-table tbody tr:hover td {
    background: rgba(255, 255, 255, 0.02);
  }

  .level-name {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 800;
    color: #d9e8ff;
    white-space: nowrap;
  }

  .level-name::before {
    content: "";
    width: 7px;
    height: 7px;
    background: var(--brand);
    border-radius: 50%;
    box-shadow: 0 0 0 5px rgba(46, 143, 255, 0.1);
  }

  .level-name.level-high::before {
    background: var(--gold);
    box-shadow: 0 0 0 5px rgba(255, 184, 76, 0.1);
  }

  .table-tip {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding: 16px 22px;
    background: rgba(255, 184, 76, 0.05);
    border-top: 1px solid rgba(255, 184, 76, 0.14);
    font-size: 0.82rem;
    color: #b8c4d6;
  }

  .table-tip::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--gold);
    margin-top: 7px;
    flex: 0 0 auto;
    box-shadow: 0 0 0 4px rgba(255, 184, 76, 0.09);
  }

  .faq-wrap {
    max-width: 920px;
    margin: 54px auto 0;
    display: flex;
    flex-direction: column;
    gap: 14px;
  }

  .faq-item {
    background: linear-gradient(150deg, rgba(255, 255, 255, 0.045), rgba(14, 26, 46, 0.62));
    border: 1px solid rgba(168, 190, 220, 0.15);
    border-radius: 18px;
    overflow: hidden;
    transition: border-color 0.25s ease, box-shadow 0.25s ease;
  }

  .faq-item:hover {
    border-color: rgba(168, 190, 220, 0.38);
  }

  .faq-item.open {
    border-color: rgba(46, 230, 192, 0.36);
    box-shadow: 0 0 30px rgba(46, 230, 192, 0.08);
  }

  .faq-q {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 19px 21px;
    background: transparent;
    border: 0;
    color: #dce8fb;
    font-size: 0.98rem;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    line-height: 1.6;
  }

  .faq-q:hover .faq-question {
    color: #fff;
  }

  .faq-plus {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: rgba(46, 230, 192, 0.08);
    border: 1px solid rgba(46, 230, 192, 0.24);
    color: var(--cta);
    flex: 0 0 auto;
    transition: transform 0.3s ease, background 0.2s ease;
  }

  .faq-plus svg {
    width: 14px;
    height: 14px;
  }

  .faq-item.open .faq-plus {
    transform: rotate(45deg);
    background: rgba(46, 230, 192, 0.15);
  }

  .faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
  }

  .faq-a-inner {
    padding: 0 21px 19px;
    color: #a9bacf;
    font-size: 0.93rem;
    line-height: 1.85;
  }

  .faq-item.open .faq-a {
    max-height: 300px;
  }

  .cta-panel {
    position: relative;
    border-radius: 28px;
    overflow: hidden;
    margin-top: 28px;
    padding: 74px 40px;
    border: 1px solid rgba(46, 230, 192, 0.15);
    text-align: center;
    box-shadow: var(--shadow);
  }

  .cta-panel::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
      linear-gradient(90deg, rgba(5, 13, 24, 0.9) 0%, rgba(8, 22, 43, 0.66) 100%),
      url("/assets/images/backpic/back-2.png") center / cover no-repeat;
  }

  .cta-panel::after {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(500px 300px at 50% 0%, rgba(46, 230, 192, 0.09), transparent 70%);
  }

  .cta-inner {
    position: relative;
    z-index: 2;
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
  }

  .cta-inner h2 {
    font-size: clamp(1.5rem, 3.4vw, 2.5rem);
    font-weight: 800;
    line-height: 1.3;
    color: #eef7ff;
    letter-spacing: -0.02em;
    margin-top: 16px;
  }

  .cta-inner p {
    color: #aebed3;
    font-size: 1rem;
    line-height: 1.8;
    margin-top: 18px;
  }

  .cta-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 14px;
    margin-top: 34px;
  }

  .cta-safety {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 24px;
    color: rgba(159, 176, 200, 0.65);
    font-size: 0.8rem;
  }

  .cta-safety svg {
    width: 16px;
    height: 16px;
    color: var(--cta);
  }

  .footer {
    margin-top: 30px;
    padding: 76px clamp(24px, 5vw, 64px) 28px;
    border-top: 1px solid rgba(168, 190, 220, 0.12);
    background: linear-gradient(0deg, rgba(3, 8, 16, 0.5), transparent);
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
    gap: 44px;
    max-width: 1280px;
    margin: 0 auto;
  }

  .footer-brand p {
    margin-top: 15px;
    color: var(--text-2);
    font-size: 0.88rem;
    line-height: 1.8;
    max-width: 300px;
  }

  .footer .brand-name {
    font-size: 1.05rem;
  }

  .footer h5 {
    font-size: 0.9rem;
    color: #c4d1e3;
    font-weight: 700;
    letter-spacing: 0.04em;
    margin-bottom: 17px;
  }

  .footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
  }

  .footer-links a {
    width: fit-content;
    font-size: 0.86rem;
    color: var(--text-2);
    line-height: 1.5;
    transition: color 0.2s ease, transform 0.2s ease;
  }

  .footer-links a:hover {
    color: var(--cta);
    transform: translateX(4px);
  }

  .footer-grid > div > p {
    font-size: 0.86rem;
    color: var(--text-2);
    line-height: 1.8;
  }

  .footer-copyright {
    max-width: 1280px;
    margin: 52px auto 0;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px 28px;
    border-top: 1px solid rgba(168, 190, 220, 0.1);
    padding-top: 22px;
    font-size: 0.75rem;
    color: #647a96;
  }

  .btn:active,
  .nav-item:active,
  .faq-q:active {
    transform: scale(0.98);
  }

  @media (max-width: 1100px) {
    .side-shell {
      display: none;
    }

    .mobile-header {
      display: flex;
    }

    .page-content {
      margin-left: 0;
    }

    .page-hero {
      min-height: 88vh;
      padding-top: 126px;
      padding-bottom: 70px;
    }
  }

  @media (max-width: 900px) {
    .section {
      padding: 78px 0;
    }

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

    .overview-visual {
      min-height: 340px;
    }

    .frame-card {
      min-height: 340px;
    }

    .journey-panel {
      padding: 34px 24px 44px;
    }

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

    .journey-track::before {
      display: none;
    }

    .journey-step {
      align-items: center;
      text-align: center;
    }

    .journey-step p {
      margin-left: auto;
      margin-right: auto;
    }

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

    .cta-panel {
      padding: 56px 24px;
    }
  }

  @media (max-width: 640px) {
    .footer-grid {
      grid-template-columns: 1fr;
    }

    .footer-brand p {
      max-width: 100%;
    }

    .feature-list {
      padding: 12px;
    }

    .feature-item {
      grid-template-columns: 42px 1fr;
      padding: 16px 12px;
    }

    .feature-icon {
      width: 40px;
      height: 40px;
    }

    .hero-actions,
    .cta-actions {
      width: 100%;
      flex-direction: column;
    }

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

    .page-hero h1 {
      font-size: 2.55rem;
    }

    .hero-lead {
      font-size: 0.98rem;
    }

    .cta-panel {
      border-radius: 22px;
    }
  }

  @media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
      animation-duration: 0.01ms !important;
      animation-iteration-count: 1 !important;
      transition-duration: 0.01ms !important;
    }

    html {
      scroll-behavior: auto;
    }
  }