/* roulang page: index */
:root {
    --primary: #F28C5A;
    --primary-600: #E0723E;
    --secondary: #A8C69F;
    --accent: #F7D794;
    --bg: #FFF9F2;
    --surface: #FFFFFF;
    --surface-alt: #FDF0E3;
    --ink: #3E2E26;
    --ink-2: #7A645A;
    --line: #F0DDCC;
    --danger: #D9534F;
    --radius: 12px;
    --radius-lg: 20px;
    --radius-banner: 24px;
    --shadow-sm: 0 6px 18px rgba(100, 70, 40, 0.07);
    --shadow-md: 0 12px 32px rgba(100, 70, 40, 0.09);
    --shadow-lg: 0 20px 44px rgba(100, 70, 40, 0.12);
  }

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

  html {
    scroll-behavior: smooth;
    scroll-padding-top: 96px;
  }

  body {
    margin: 0;
    font-family: "Inter", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
    font-size: 16px;
    line-height: 1.8;
    background: var(--bg);
    color: var(--ink);
    -webkit-font-smoothing: antialiased;
  }

  h1, h2, h3, h4, h5, h6 {
    color: var(--ink);
    line-height: 1.3;
    margin: 0 0 0.5rem;
  }

  p {
    margin-bottom: 1rem;
  }

  a {
    color: inherit;
    text-decoration: none;
    transition: color .2s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease, transform .2s ease;
  }

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

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

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

  section[id],
  div[id] {
    scroll-margin-top: 96px;
  }

  .container {
    max-width: 1200px;
  }

  .site-header {
    position: sticky;
    top: 0;
    z-index: 1020;
    background: rgba(255, 249, 242, 0.86);
    -webkit-backdrop-filter: saturate(1.6) blur(12px);
    backdrop-filter: saturate(1.6) blur(12px);
    border-bottom: 1px solid rgba(240, 221, 204, 0.8);
  }

  .header-inner {
    min-height: 74px;
    gap: 1rem;
  }

  .brand {
    display: inline-flex;
    align-items: center;
    gap: .6rem;
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--ink);
    letter-spacing: .02em;
    white-space: nowrap;
  }

  .brand:hover {
    color: var(--ink);
  }

  .brand-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    background: var(--accent);
    border-radius: 12px;
    font-size: 1.2rem;
    box-shadow: var(--shadow-sm);
  }

  .brand-icon i {
    color: var(--primary-600);
  }

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

  .topnav a {
    display: inline-block;
    padding: .5rem .85rem;
    border-radius: 12px;
    font-weight: 600;
    color: var(--ink-2);
    text-decoration: none;
    position: relative;
  }

  .topnav a::after {
    content: "";
    position: absolute;
    left: .85rem;
    right: .85rem;
    bottom: .18rem;
    height: 2px;
    border-radius: 2px;
    background: var(--primary);
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform .25s ease;
  }

  .topnav a:hover,
  .topnav a.active {
    color: var(--primary);
  }

  .topnav a.active::after,
  .topnav a:hover::after {
    transform: scaleX(1);
  }

  .nav-cta {
    white-space: nowrap;
    margin-left: .4rem;
  }

  .btn {
    --bs-btn-focus-box-shadow: 0 0 0 0.2rem rgba(242, 140, 90, .2);
    border-radius: var(--radius);
  }

  .btn-major {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .4rem;
    background: var(--primary);
    border: 1px solid var(--primary);
    color: #fff !important;
    font-weight: 700;
    padding: .68rem 1.4rem;
    border-radius: var(--radius);
    box-shadow: 0 8px 20px rgba(242, 140, 90, 0.25);
  }

  .btn-major:hover,
  .btn-major:focus {
    background: var(--primary-600);
    border-color: var(--primary-600);
    color: #fff !important;
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(224, 114, 62, 0.3);
  }

  .btn-major:active {
    transform: translateY(0);
    box-shadow: 0 4px 14px rgba(224, 114, 62, 0.2);
  }

  .btn-soft {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .4rem;
    background: var(--surface);
    border: 1px solid var(--line);
    color: var(--ink);
    font-weight: 700;
    padding: .66rem 1.35rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
  }

  .btn-soft:hover,
  .btn-soft:focus {
    background: var(--surface-alt);
    border-color: var(--primary);
    color: var(--primary-600);
    transform: translateY(-2px);
  }

  .btn-white {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .4rem;
    background: #fff;
    border: none;
    color: var(--primary-600);
    font-weight: 700;
    padding: .7rem 1.45rem;
    border-radius: var(--radius);
    box-shadow: 0 10px 24px rgba(100, 70, 40, 0.14);
  }

  .btn-white:hover,
  .btn-white:focus {
    background: var(--surface-alt);
    color: var(--primary-600);
    transform: translateY(-2px);
  }

  .btn-feature {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .3rem;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.35);
    color: #fff;
    font-weight: 700;
    padding: .7rem 1.4rem;
    border-radius: 100px;
  }

  .btn-feature:hover {
    background: rgba(255, 255, 255, 0.14);
    color: #fff;
    border-color: #fff;
  }

  .hero-invite {
    position: relative;
    isolation: isolate;
    padding: 4.6rem 0 4.2rem;
    background: linear-gradient(105deg, rgba(255, 249, 242, 0.97), rgba(253, 240, 227, 0.9)), url("/assets/images/backpic/back-1.jpg") center/cover no-repeat;
    overflow: hidden;
    border-bottom: 1px solid var(--line);
  }

  .hero-inner {
    display: grid;
    grid-template-columns: 1.08fr 0.92fr;
    gap: 2.4rem;
    align-items: center;
  }

  .hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: .45rem;
    background: rgba(247, 215, 148, 0.55);
    color: var(--primary-600);
    font-size: .86rem;
    font-weight: 700;
    padding: .32rem .85rem;
    border-radius: 100px;
    margin-bottom: 1.1rem;
  }

  .hero-eyebrow i {
    font-size: .95rem;
  }

  .hero-title {
    font-size: clamp(2rem, 4vw, 2.85rem);
    font-weight: 800;
    line-height: 1.28;
    margin-bottom: 1.1rem;
    letter-spacing: -0.01em;
  }

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

  .hero-lead {
    font-size: 1.08rem;
    color: var(--ink-2);
    max-width: 540px;
    margin-bottom: 1.6rem;
  }

  .hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: .75rem;
    margin-bottom: 1.35rem;
  }

  .hero-trust {
    display: flex;
    flex-wrap: wrap;
    gap: 1.2rem;
    list-style: none;
    margin: 0;
    padding: 0;
  }

  .hero-trust li {
    display: flex;
    align-items: center;
    gap: .35rem;
    font-size: .88rem;
    color: var(--ink-2);
    font-weight: 600;
  }

  .hero-trust i {
    color: var(--secondary);
    font-size: 1.05rem;
  }

  .invite-card {
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.8);
    border-radius: 24px;
    box-shadow: 0 24px 60px rgba(100, 70, 40, 0.14);
    padding: 1.6rem;
    backdrop-filter: blur(6px);
  }

  .invite-card .small-title {
    font-size: .82rem;
    font-weight: 700;
    letter-spacing: .04em;
    color: var(--primary-600);
    text-transform: uppercase;
    margin-bottom: .2rem;
  }

  .invite-card h2 {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: .45rem;
  }

  .invite-card p {
    color: var(--ink-2);
    font-size: .92rem;
    margin-bottom: 1rem;
  }

  .progress-wrap {
    background: var(--surface-alt);
    border-radius: 16px;
    padding: .95rem 1rem;
    margin: 1.1rem 0;
  }

  .progress-label {
    display: flex;
    justify-content: space-between;
    font-size: .82rem;
    color: var(--ink-2);
    font-weight: 600;
    margin-bottom: .4rem;
  }

  .invite-progress {
    height: 10px;
    background: #F5E4D3;
    border-radius: 100px;
    overflow: hidden;
  }

  .invite-progress .bar {
    width: 60%;
    height: 100%;
    background: linear-gradient(90deg, var(--secondary), var(--accent));
    border-radius: 100px;
  }

  .reward-tags {
    display: flex;
    flex-wrap: wrap;
    gap: .45rem;
    margin-bottom: 1.1rem;
  }

  .reward-tags span {
    font-size: .8rem;
    font-weight: 600;
    color: var(--ink-2);
    background: var(--bg);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: .22rem .55rem;
  }

  .reward-tags span b {
    color: var(--primary-600);
  }

  .invite-copy {
    display: flex;
    align-items: center;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 14px;
    overflow: hidden;
  }

  .invite-copy .placeholder {
    flex: 1;
    padding: .56rem .9rem;
    color: var(--ink-2);
    font-size: .88rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .invite-copy .btn {
    border-radius: 0;
    padding: .56rem 1rem;
    box-shadow: none;
  }

  .section-block {
    padding: 4.8rem 0;
  }

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

  .section-label {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    font-size: .82rem;
    font-weight: 700;
    letter-spacing: .05em;
    color: var(--primary-600);
    margin-bottom: .6rem;
  }

  .section-title {
    font-size: clamp(1.7rem, 3vw, 2.2rem);
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: .65rem;
  }

  .section-sub {
    color: var(--ink-2);
    font-size: 1rem;
    max-width: 680px;
    margin-bottom: 2.4rem;
  }

  .section-head-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: flex-end;
    gap: 1rem;
    margin-bottom: 2rem;
  }

  .section-head-row .section-sub {
    margin-bottom: 0;
  }

  .benefit-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 1.6rem 1.5rem;
    height: 100%;
    transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
    position: relative;
  }

  .benefit-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: rgba(242, 140, 90, 0.4);
  }

  .benefit-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    background: var(--bg);
    border-radius: 16px;
    font-size: 1.45rem;
    color: var(--primary-600);
    margin-bottom: 1.2rem;
  }

  .benefit-icon.green {
    color: #6FA173;
    background: rgba(168, 198, 159, 0.14);
  }

  .benefit-icon.yellow {
    color: #D49A20;
    background: rgba(247, 215, 148, 0.24);
  }

  .benefit-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: .4rem;
  }

  .benefit-card p {
    font-size: .92rem;
    color: var(--ink-2);
    margin-bottom: .9rem;
  }

  .benefit-meta {
    display: inline-flex;
    align-items: center;
    gap: .3rem;
    background: var(--surface-alt);
    border: 1px solid var(--line);
    border-radius: 100px;
    color: var(--ink-2);
    font-size: .76rem;
    font-weight: 600;
    padding: .2rem .65rem;
  }

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

  .plan-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 24px;
    padding: 2rem 1.6rem;
    height: 100%;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-sm);
    position: relative;
    transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
  }

  .plan-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
  }

  .plan-card.recommend {
    border: 1px solid rgba(168, 198, 159, 0.8);
    box-shadow: 0 18px 42px rgba(100, 70, 40, 0.1);
  }

  .plan-flag {
    position: absolute;
    top: -13px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--secondary);
    color: #3d5839;
    font-size: .76rem;
    font-weight: 700;
    padding: .28rem .9rem;
    border-radius: 100px;
    white-space: nowrap;
    box-shadow: var(--shadow-sm);
  }

  .plan-type {
    font-size: .92rem;
    letter-spacing: .04em;
    color: var(--ink-2);
    font-weight: 700;
    margin-bottom: .4rem;
  }

  .plan-name {
    font-size: 1.55rem;
    font-weight: 800;
    margin-bottom: 1rem;
  }

  .plan-desc {
    color: var(--ink-2);
    font-size: .9rem;
    margin-bottom: 1rem;
  }

  .plan-price {
    display: flex;
    align-items: baseline;
    gap: .4rem;
    margin-bottom: 1.3rem;
  }

  .plan-price .price {
    font-size: 2.6rem;
    font-weight: 800;
    color: var(--primary-600);
    line-height: 1;
  }

  .plan-price .period {
    font-size: .9rem;
    color: var(--ink-2);
  }

  .plan-list {
    list-style: none;
    padding: 0;
    margin: 0 0 1.4rem;
    flex: 1;
  }

  .plan-list li {
    position: relative;
    padding-left: 1.6rem;
    margin-bottom: .48rem;
    font-size: .9rem;
    color: var(--ink);
  }

  .plan-list li i {
    position: absolute;
    left: 0;
    top: .24rem;
    color: var(--secondary);
    font-size: 1rem;
  }

  .plan-action .btn {
    width: 100%;
  }

  .pricing-note {
    margin-top: 2rem;
    text-align: center;
    color: var(--ink-2);
    font-size: .86rem;
  }

  .pricing-note i {
    color: var(--secondary);
  }

  .news-section {
    padding: 4.8rem 0;
  }

  .news-main-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
  }

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

  .news-item {
    display: block;
    padding: 1.1rem 1.25rem;
    border-bottom: 1px solid var(--line);
    transition: background .2s ease;
  }

  .news-item:last-child {
    border-bottom: none;
  }

  .news-item:hover {
    background: var(--surface-alt);
  }

  .news-item-title {
    display: block;
    font-weight: 700;
    font-size: 1rem;
    color: var(--ink);
    line-height: 1.6;
    margin-bottom: .3rem;
  }

  .news-item:hover .news-item-title {
    color: var(--primary-600);
  }

  .news-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: .3rem .8rem;
    font-size: .8rem;
    color: var(--ink-2);
  }

  .news-tag {
    display: inline-block;
    background: rgba(247, 215, 148, 0.4);
    color: #b37223;
    font-size: .74rem;
    font-weight: 700;
    border-radius: 6px;
    padding: .1rem .45rem;
  }

  .cover-card {
    position: relative;
    border-radius: 18px;
    overflow: hidden;
    background: var(--surface-alt);
    box-shadow: var(--shadow-sm);
  }

  .cover-card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    transition: transform .4s ease;
  }

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

  .cover-overlay {
    position: absolute;
    left: .8rem;
    top: .8rem;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 100px;
    color: var(--ink);
    font-size: .74rem;
    font-weight: 700;
    padding: .18rem .65rem;
    backdrop-filter: blur(5px);
  }

  .cover-overlay.hot {
    background: var(--primary);
    color: #fff;
  }

  .cover-caption {
    padding: 1rem 1rem 1.2rem;
  }

  .cover-caption h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: .35rem;
  }

  .cover-caption p {
    color: var(--ink-2);
    font-size: .86rem;
    margin-bottom: .2rem;
  }

  .trend-mini {
    display: flex;
    align-items: center;
    gap: .7rem;
    padding: .8rem;
    border-radius: 14px;
    background: var(--surface-alt);
    border: 1px solid var(--line);
  }

  .trend-mini + .trend-mini {
    margin-top: .7rem;
  }

  .trend-mini .num {
    flex: 0 0 26px;
    height: 26px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--surface);
    border-radius: 8px;
    border: 1px solid var(--line);
    font-size: .8rem;
    font-weight: 700;
    color: var(--primary-600);
  }

  .trend-mini .text {
    font-size: .86rem;
    line-height: 1.45;
  }

  .open-cta {
    position: relative;
    border-radius: 26px;
    overflow: hidden;
    margin: 0 auto;
    padding: 3.2rem 2.2rem;
    isolation: isolate;
    color: #fff;
    text-align: center;
  }

  .open-cta::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    background: linear-gradient(110deg, rgba(224, 114, 62, 0.92), rgba(242, 140, 90, 0.82)), url("/assets/images/backpic/back-4.jpg") center/cover;
  }

  .open-cta h2 {
    color: #fff;
    font-size: 2rem;
    font-weight: 800;
  }

  .open-cta p {
    color: rgba(255, 255, 255, 0.92);
    font-size: 1rem;
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 1.6rem;
  }

  .open-trust-bar {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: .8rem 1.6rem;
    margin-top: 1.6rem;
    font-size: .86rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9);
  }

  .open-trust-bar i {
    margin-right: .25rem;
  }

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

  .faq-side {
    padding-right: 2rem;
  }

  .faq-card {
    padding: 1.2rem;
    background: var(--surface-alt);
    border: 1px solid var(--line);
    border-radius: 18px;
    margin-top: 1.2rem;
  }

  .faq-card .small-title {
    color: var(--ink-2);
    font-weight: 700;
    font-size: .92rem;
  }

  .faq-card a {
    color: var(--primary-600);
    font-weight: 700;
  }

  .accordion-item {
    background: var(--surface);
    border: 1px solid var(--line) !important;
    border-radius: 18px !important;
    box-shadow: var(--shadow-sm);
    margin-bottom: .8rem;
    overflow: hidden;
  }

  .accordion-button {
    background: var(--surface);
    color: var(--ink);
    font-weight: 700;
    font-size: 1rem;
    padding: 1.15rem 1.3rem;
    box-shadow: none !important;
    border-radius: 18px !important;
  }

  .accordion-button:focus {
    box-shadow: 0 0 0 3px rgba(242, 140, 90, 0.18) !important;
  }

  .accordion-button:not(.collapsed) {
    background: var(--surface-alt);
    color: var(--ink);
    border-radius: 18px 18px 0 0 !important;
  }

  .accordion-button::after {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23F28C5A' class='bi bi-plus-circle' viewBox='0 0 16 16'%3e%3cpath d='M8 15A7 7 0 1 1 8 1a7 7 0 0 1 0 14m0 1A8 8 0 1 0 8 0a8 8 0 0 0 0 16'/%3e%3cpath d='M8 4a.5.5 0 0 1 .5.5v3h3a.5.5 0 0 1 0 1h-3v3a.5.5 0 0 1-1 0v-3h-3a.5.5 0 0 1 0-1h3v-3A.5.5 0 0 1 8 4'/%3e%3c/svg%3e");
    transition: transform .3s ease, background .3s ease;
  }

  .accordion-button:not(.collapsed)::after {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23F28C5A' class='bi bi-dash-circle' viewBox='0 0 16 16'%3e%3cpath d='M8 15A7 7 0 1 1 8 1a7 7 0 0 1 0 14m0 1A8 8 0 1 0 8 0a8 8 0 0 0 0 16'/%3e%3cpath d='M4 8a.5.5 0 0 1 .5-.5h7a.5.5 0 0 1 0 1h-7A.5.5 0 0 1 4 8'/%3e%3c/svg%3e");
  }

  .accordion-button:not(.collapsed):focus {
    box-shadow: none;
  }

  .accordion-body {
    color: var(--ink-2);
    font-size: .94rem;
    line-height: 1.8;
    border-top: 1px dashed var(--line);
    padding: 1.1rem 1.3rem 1.2rem;
  }

  .site-footer {
    background: var(--surface-alt);
    border-top: 1px solid var(--line);
    padding-top: 3.5rem;
    padding-bottom: 1rem;
  }

  .footer-brand {
    display: inline-flex;
    align-items: center;
    gap: .6rem;
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--ink);
    margin-bottom: .7rem;
  }

  .footer-brand .brand-icon {
    background: var(--accent);
  }

  .footer-about {
    color: var(--ink-2);
    font-size: .9rem;
    line-height: 1.8;
    max-width: 320px;
  }

  .footer-title {
    font-size: .86rem;
    font-weight: 800;
    letter-spacing: .06em;
    color: var(--ink);
    margin-bottom: .9rem;
  }

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

  .footer-links li {
    margin-bottom: .45rem;
  }

  .footer-links a {
    color: var(--ink-2);
    font-size: .9rem;
  }

  .footer-links a:hover {
    color: var(--primary-600);
  }

  .footer-copy {
    border-top: 1px solid var(--line);
    margin-top: 2.4rem;
    padding-top: 1.4rem;
    padding-bottom: 1rem;
    color: var(--ink-2);
    font-size: .82rem;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: .5rem;
  }

  .mobile-bottom-nav {
    display: none;
  }

  @media (min-width: 768px) {
    .topnav {
      display: flex !important;
    }
  }

  @media (max-width: 991.98px) {
    .hero-inner {
      grid-template-columns: 1fr;
    }

    .invite-card {
      max-width: 560px;
    }

    .faq-side {
      padding-right: 0;
    }
  }

  @media (max-width: 767.98px) {
    .topnav,
    .nav-cta {
      display: none !important;
    }

    .header-inner {
      justify-content: center;
      min-height: 60px;
    }

    .brand {
      font-size: 1.2rem;
    }

    .site-header {
      min-height: 60px;
    }

    body {
      padding-bottom: 66px;
    }

    .mobile-bottom-nav {
      display: flex;
      position: fixed;
      left: 0;
      right: 0;
      bottom: 0;
      z-index: 1080;
      height: auto;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-top: 1px solid var(--line);
      align-items: center;
      justify-content: space-around;
      padding: .35rem .4rem calc(.3rem + env(safe-area-inset-bottom));
      box-shadow: 0 -8px 24px rgba(100, 70, 40, 0.06);
    }

    .tab-item {
      display: flex;
      flex-direction: column;
      align-items: center;
      width: 60px;
      padding: .2rem .2rem;
      color: var(--ink-2);
      font-size: .7rem;
      font-weight: 600;
      text-decoration: none;
      border-radius: 12px;
      line-height: 1.25;
      transition: color .2s ease, background .2s ease;
    }

    .tab-item:hover,
    .tab-item:focus {
      color: var(--primary);
      background: rgba(242, 140, 90, 0.08);
    }

    .tab-item.active {
      color: var(--primary);
    }

    .tab-item i {
      font-size: 1.3rem;
      margin-bottom: .1rem;
    }

    .tab-main {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 54px;
      height: 54px;
      margin-top: -24px;
      border-radius: 50%;
      background: var(--primary);
      color: #fff;
      font-size: 1.6rem;
      box-shadow: 0 8px 20px rgba(242, 140, 90, 0.4);
      border: 4px solid var(--bg);
    }

    .tab-main:hover,
    .tab-main:focus {
      background: var(--primary-600);
      color: #fff;
    }

    .hero-invite {
      padding: 3.2rem 0 2.8rem;
    }

    .hero-title {
      font-size: 1.9rem;
    }

    .hero-lead {
      font-size: 1rem;
    }

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

    .section-block,
    .news-section {
      padding: 3.4rem 0;
    }

    .open-cta {
      margin-left: .6rem;
      margin-right: .6rem;
      padding: 2.2rem 1.2rem;
      border-radius: 22px;
    }

    .open-cta h2 {
      font-size: 1.55rem;
    }

    .open-cta .btn {
      width: 100%;
      margin-top: .3rem;
    }

    .plan-card {
      padding: 1.7rem 1.4rem;
    }

    .scheme-card {
      padding: 1.2rem 1rem;
    }

    .footer-copy {
      flex-direction: column;
      text-align: center;
      justify-content: center;
    }
  }

  @media (max-width: 520px) {
    .social-proof {
      grid-template-columns: 1fr;
    }

    .news-meta {
      font-size: .75rem;
    }

    .benefit-card {
      padding: 1.3rem 1.1rem;
    }
  }

  .pointer-events-none {
    pointer-events: none;
  }

/* roulang page: category1 */
:root {
            --primary: #F28C5A;
            --primary-600: #E0723E;
            --secondary: #A8C69F;
            --accent: #F7D794;
            --bg: #FFF9F2;
            --surface: #FFFFFF;
            --surface-alt: #FDF0E3;
            --ink: #3E2E26;
            --ink-2: #7A645A;
            --line: #F0DDCC;
            --danger: #D9534F;
            --radius: 12px;
            --radius-lg: 20px;
            --radius-banner: 24px;
            --shadow-sm: 0 6px 18px rgba(100, 70, 40, 0.07);
            --shadow-md: 0 12px 32px rgba(100, 70, 40, 0.09);
            --shadow-lg: 0 20px 44px rgba(100, 70, 40, 0.12);
        }
        html {
            scroll-behavior: smooth;
            scroll-padding-top: 96px;
        }
        body {
            margin: 0;
            font-family: "Inter", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            font-size: 16px;
            line-height: 1.8;
            background: var(--bg);
            color: var(--ink);
            -webkit-font-smoothing: antialiased;
        }
        a { color: inherit; text-decoration: none; transition: color .2s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease, transform .2s ease; }
        a:hover { color: var(--primary); }
        img { max-width: 100%; display: block; }
        button, input, select, textarea { font: inherit; }
        section[id], div[id] { scroll-margin-top: 96px; }
        .container { max-width: 1200px; }

        /* header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1020;
            background: rgba(255, 249, 242, 0.86);
            -webkit-backdrop-filter: saturate(1.6) blur(12px);
            backdrop-filter: saturate(1.6) blur(12px);
            border-bottom: 1px solid rgba(240, 221, 204, 0.8);
        }
        .header-inner { min-height: 74px; gap: 1rem; }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: .6rem;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--ink);
            white-space: nowrap;
        }
        .brand:hover { color: var(--ink); }
        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--accent);
            border-radius: 12px;
            font-size: 1.2rem;
            box-shadow: var(--shadow-sm);
        }
        .brand-icon i { color: var(--primary-600); }
        .topnav {
            display: flex;
            align-items: center;
            gap: .4rem;
            margin: 0;
            padding: 0;
            list-style: none;
        }
        .topnav a {
            display: inline-block;
            padding: .5rem .85rem;
            border-radius: 12px;
            font-weight: 600;
            color: var(--ink-2);
            position: relative;
        }
        .topnav a::after {
            content: "";
            position: absolute;
            left: .85rem;
            right: .85rem;
            bottom: .18rem;
            height: 2px;
            border-radius: 2px;
            background: var(--primary);
            transform: scaleX(0);
            transform-origin: left center;
            transition: transform .25s ease;
        }
        .topnav a:hover,
        .topnav a.active { color: var(--primary); }
        .topnav a.active::after,
        .topnav a:hover::after { transform: scaleX(1); }
        .nav-cta { white-space: nowrap; margin-left: .4rem; }

        /* buttons */
        .btn { --bs-btn-focus-box-shadow: 0 0 0 0.2rem rgba(242, 140, 90, .2); border-radius: var(--radius); }
        .btn-major {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .4rem;
            background: var(--primary);
            border: 1px solid var(--primary);
            color: #fff !important;
            font-weight: 700;
            padding: .68rem 1.4rem;
            border-radius: var(--radius);
            box-shadow: 0 8px 20px rgba(242, 140, 90, 0.25);
        }
        .btn-major:hover,
        .btn-major:focus {
            background: var(--primary-600);
            border-color: var(--primary-600);
            color: #fff !important;
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(224, 114, 62, 0.3);
        }
        .btn-major:active { transform: translateY(0); }
        .btn-soft {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .4rem;
            background: var(--surface);
            border: 1px solid var(--line);
            color: var(--ink);
            font-weight: 700;
            padding: .66rem 1.35rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
        }
        .btn-soft:hover,
        .btn-soft:focus {
            background: var(--surface-alt);
            border-color: var(--primary);
            color: var(--primary-600);
            transform: translateY(-2px);
        }

        /* category hero */
        .category-hero {
            position: relative;
            padding: 3.6rem 0 3.2rem;
            background: linear-gradient(115deg, rgba(255, 249, 242, 0.95), rgba(253, 240, 227, 0.88)), url("/assets/images/backpic/back-2.jpg") center/cover no-repeat;
            border-bottom: 1px solid var(--line);
        }
        .breadcrumb-nav {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: .45rem;
            font-size: .875rem;
            color: var(--ink-2);
            margin-bottom: 1rem;
        }
        .breadcrumb-nav a { color: var(--ink-2); }
        .breadcrumb-nav a:hover { color: var(--primary); }
        .breadcrumb-nav .separator { color: var(--line); }
        .cat-badge {
            display: inline-flex;
            align-items: center;
            gap: .4rem;
            background: rgba(247, 215, 148, 0.6);
            color: var(--primary-600);
            font-size: .86rem;
            font-weight: 700;
            padding: .32rem .9rem;
            border-radius: 100px;
            margin-bottom: 1rem;
        }
        .category-title {
            font-size: clamp(1.9rem, 3.8vw, 2.75rem);
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: -0.01em;
            margin-bottom: 1rem;
        }
        .category-lead {
            font-size: 1.08rem;
            color: var(--ink-2);
            max-width: 600px;
            margin-bottom: 1.5rem;
        }
        .category-actions {
            display: flex;
            flex-wrap: wrap;
            gap: .75rem;
        }
        .hero-miniplayer {
            position: relative;
            max-width: 420px;
            margin-left: auto;
            min-height: 260px;
        }
        .miniplayer-card {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background: rgba(255, 255, 255, 0.72);
            border: 1px solid rgba(255, 255, 255, 0.9);
            border-radius: 28px;
            width: 220px;
            height: 220px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-lg);
            -webkit-backdrop-filter: blur(6px);
            backdrop-filter: blur(6px);
        }
        .play-orb {
            width: 84px;
            height: 84px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2.2rem;
            box-shadow: 0 14px 30px rgba(242, 140, 90, 0.4);
        }
        .float-label {
            position: absolute;
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: 100px;
            padding: .35rem 1rem;
            font-size: .86rem;
            font-weight: 600;
            box-shadow: var(--shadow-sm);
            color: var(--ink);
        }
        .float-label:hover { color: var(--primary); }
        .float-label-1 { top: 6%; left: 0; animation: floaty 4s ease-in-out infinite; }
        .float-label-2 { top: 28%; right: 0; animation: floaty 4.6s ease-in-out .4s infinite; }
        .float-label-3 { bottom: 8%; left: 8%; animation: floaty 5s ease-in-out .8s infinite; }
        @keyframes floaty {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-6px); }
        }

        /* section headings */
        .section-head { margin-bottom: 1.8rem; }
        .section-head h2 {
            font-size: 1.875rem;
            font-weight: 700;
            line-height: 1.35;
            margin: 0;
        }
        .section-head p,
        .section-lead {
            color: var(--ink-2);
            font-size: 1rem;
            margin: .45rem 0 0;
        }
        .section-title-line {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: .6rem;
            margin-bottom: 1.4rem;
        }
        .section-title-line h2 {
            font-size: 1.6rem;
            font-weight: 700;
            margin: 0;
        }
        .update-note {
            display: inline-flex;
            align-items: center;
            gap: .4rem;
            background: var(--surface-alt);
            border: 1px solid var(--line);
            color: var(--ink-2);
            font-size: .86rem;
            border-radius: 100px;
            padding: .3rem .9rem;
        }
        .update-note i { color: var(--primary); }

        /* works area */
        .category-works { padding: 3.2rem 0 1rem; }
        .video-card {
            display: block;
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: transform .25s ease, box-shadow .25s ease;
            height: 100%;
        }
        .video-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            color: inherit;
        }
        .video-thumb {
            position: relative;
            overflow: hidden;
            aspect-ratio: 4 / 3;
            background: var(--surface-alt);
        }
        .video-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }
        .video-card:hover .video-thumb img { transform: scale(1.05); }
        .video-thumb .duration {
            position: absolute;
            left: .7rem;
            bottom: .7rem;
            background: rgba(62, 46, 38, 0.75);
            color: #fff;
            font-size: .75rem;
            font-weight: 600;
            padding: .15rem .55rem;
            border-radius: 6px;
        }
        .video-thumb .video-view {
            position: absolute;
            right: .7rem;
            bottom: .7rem;
            background: rgba(255, 255, 255, 0.88);
            color: var(--ink);
            font-size: .78rem;
            font-weight: 600;
            padding: .12rem .55rem;
            border-radius: 6px;
        }
        .play-hover {
            position: absolute;
            inset: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(62, 46, 38, 0.16);
            opacity: 0;
            transition: opacity .25s ease;
        }
        .play-hover i {
            width: 54px;
            height: 54px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 1.6rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 10px 26px rgba(242, 140, 90, 0.38);
            padding-left: .12rem;
        }
        .video-card:hover .play-hover { opacity: 1; }
        .video-meta { padding: 1rem 1.1rem 1.1rem; }
        .video-meta h3 {
            font-size: 1.05rem;
            font-weight: 700;
            line-height: 1.5;
            margin: 0 0 .65rem;
        }
        .video-tag {
            display: inline-block;
            background: var(--bg);
            color: var(--primary-600);
            font-size: .76rem;
            font-weight: 600;
            border: 1px solid var(--line);
            border-radius: 100px;
            padding: .1rem .65rem;
            margin: 0 .3rem .3rem 0;
        }
        .paginator-wrap {
            display: flex;
            justify-content: center;
            margin: 2.2rem 0 1.4rem;
        }
        .pagination { margin: 0; }
        .pagination .page-link {
            border-color: var(--line);
            color: var(--ink);
            font-weight: 600;
            padding: .5rem .95rem;
            border-radius: 10px;
            margin: 0 .25rem;
            background: var(--surface);
            box-shadow: none;
        }
        .pagination .page-link:hover { color: var(--primary); border-color: var(--primary); background: var(--surface-alt); }
        .pagination .page-item.active .page-link {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }
        .page-item:first-child .page-link,
        .page-item:last-child .page-link { border-radius: 10px; }

        /* right filter panel */
        .cat-sidebar .filter-panel {
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 1.4rem 1.35rem;
            margin-bottom: 1.4rem;
        }
        .filter-title {
            font-size: 1.1rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: .5rem;
            margin-bottom: 1rem;
        }
        .filter-title i {
            width: 30px;
            height: 30px;
            background: var(--bg);
            color: var(--primary-600);
            border-radius: 10px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: .45rem;
        }
        .tag-cloud a {
            background: var(--bg);
            border: 1px solid var(--line);
            color: var(--ink);
            font-size: .86rem;
            padding: .32rem .9rem;
            border-radius: 100px;
            font-weight: 500;
        }
        .tag-cloud a:hover {
            background: var(--surface-alt);
            border-color: var(--primary);
            color: var(--primary-600);
        }
        .hot-mini-list { list-style: none; margin: 0; padding: 0; }
        .hot-mini-list li {
            display: flex;
            align-items: center;
            gap: .8rem;
            padding: .7rem 0;
            border-bottom: 1px dashed var(--line);
        }
        .hot-mini-list li:last-child { border-bottom: 0; padding-bottom: .2rem; }
        .hot-rank {
            min-width: 26px;
            height: 26px;
            border-radius: 9px;
            background: var(--bg);
            color: var(--ink-2);
            font-size: .86rem;
            font-weight: 800;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }
        .hot-mini-list li:nth-child(1) .hot-rank { background: var(--accent); color: var(--primary-600); }
        .hot-mini-list li:nth-child(2) .hot-rank { background: var(--surface-alt); color: var(--primary-600); }
        .hot-mini-list .hot-meta { min-width: 0; }
        .hot-mini-list .hot-meta strong {
            display: block;
            font-size: .92rem;
            font-weight: 600;
            line-height: 1.4;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .hot-mini-list .hot-meta span { font-size: .78rem; color: var(--ink-2); }

        /* topic pick */
        .topic-section { padding: 2.6rem 0 3rem; }
        .topic-pick {
            display: flex;
            align-items: center;
            gap: 1.3rem;
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            padding: 1.4rem 1.5rem;
            margin-bottom: 1rem;
            box-shadow: var(--shadow-sm);
            transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
        }
        .topic-pick:hover {
            transform: translateX(6px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary);
            color: inherit;
        }
        .topic-num {
            flex: 0 0 auto;
            width: 52px;
            height: 52px;
            background: var(--bg);
            color: var(--primary-600);
            border-radius: 16px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            font-weight: 800;
        }
        .topic-pick h3 { font-size: 1.18rem; font-weight: 700; margin: 0 0 .25rem; }
        .topic-pick p { color: var(--ink-2); font-size: .93rem; margin: 0 0 .4rem; max-width: 760px; }
        .topic-label {
            display: inline-flex;
            align-items: center;
            gap: .35rem;
            font-size: .8rem;
            color: var(--primary-600);
            background: var(--surface-alt);
            border-radius: 100px;
            padding: .2rem .8rem;
        }

        /* quality hd section */
        .quality-hd {
            position: relative;
            padding: 3.4rem 0;
            background: linear-gradient(120deg, rgba(255, 249, 242, 0.9), rgba(253, 240, 227, 0.78)), url("/assets/images/backpic/back-3.jpg") center/cover no-repeat;
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
        }
        .quality-copy h2 { font-size: 1.75rem; font-weight: 700; line-height: 1.35; margin-bottom: .6rem; }
        .quality-copy > p { color: var(--ink-2); margin-bottom: 1.2rem; max-width: 540px; }
        .feature-list { list-style: none; margin: 0 0 1.4rem; padding: 0; }
        .feature-list li { display: flex; gap: .7rem; margin-bottom: .75rem; color: var(--ink); }
        .feature-list li i { color: var(--primary-600); font-size: 1.1rem; padding-top: .2rem; }
        .data-strips {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1rem;
            background: rgba(255, 255, 255, 0.7);
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            padding: 1.3rem;
            box-shadow: var(--shadow-sm);
        }
        .data-strips strong { font-size: 1.6rem; color: var(--primary-600); line-height: 1.2; display: block; }
        .data-strips span { font-size: .84rem; color: var(--ink-2); }

        /* membership lite */
        .membership-lite {
            padding: 3rem 0 1.8rem;
            scroll-margin-top: 90px;
        }
        .member-card {
            background: linear-gradient(135deg, rgba(168, 198, 159, 0.22), rgba(255, 255, 255, 0.8)), var(--surface);
            border: 1px solid rgba(168, 198, 159, 0.65);
            border-radius: var(--radius-banner);
            padding: 2.2rem 1.8rem;
            box-shadow: var(--shadow-md);
        }
        .member-card h2 { font-size: 1.7rem; font-weight: 700; margin: 0 0 .4rem; }
        .member-card .member-lead { color: var(--ink-2); max-width: 680px; margin-bottom: 1.2rem; }
        .member-perks {
            display: flex;
            flex-wrap: wrap;
            gap: .6rem 1.6rem;
            margin: 0 0 1.3rem;
            padding: 0;
            list-style: none;
        }
        .member-perks li { color: var(--ink); font-size: .95rem; line-height: 1.7; }
        .member-perks li i { color: var(--primary); margin-right: .3rem; }

        /* faq */
        .faq-section { padding: 3rem 0 2.4rem; }
        .faq-intro { font-size: 1.1rem; color: var(--ink-2); }
        .faq-list { margin-top: 1.2rem; }
        .accordion-item {
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: var(--radius) !important;
            margin-bottom: .9rem;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .accordion-button {
            background: var(--surface);
            color: var(--ink);
            font-weight: 600;
            box-shadow: none;
            border: none;
        }
        .accordion-button:not(.collapsed) {
            background: var(--surface-alt);
            color: var(--primary-600);
        }
        .accordion-button:focus { box-shadow: none; border-color: var(--primary); }
        .accordion-body { color: var(--ink-2); background: var(--surface); border-top: 1px solid var(--line); }

        /* footer CTA */
        .footer-cta-wrap { padding: 1.4rem 0 3rem; }
        .footer-cta {
            background: var(--accent);
            border: 1px solid rgba(240, 221, 204, 0.6);
            border-radius: var(--radius-banner);
            padding: 2.6rem 2rem;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 1.4rem;
        }
        .footer-cta h3 { font-size: 1.7rem; font-weight: 800; margin: 0 0 .3rem; }
        .footer-cta p { color: var(--ink); opacity: .82; margin: 0; }
        .footer-cta-actions { display: flex; flex-wrap: wrap; gap: .7rem; }

        /* footer */
        .site-footer {
            background: var(--surface-alt);
            border-top: 1px solid var(--line);
            padding: 3rem 0 2.2rem;
        }
        .footer-brand {
            display: inline-flex;
            align-items: center;
            gap: .6rem;
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--ink);
            margin-bottom: .6rem;
        }
        .footer-about {
            color: var(--ink-2);
            font-size: .9rem;
            max-width: 340px;
            margin-bottom: .4rem;
        }
        .footer-title {
            font-weight: 700;
            font-size: .95rem;
            margin-bottom: .9rem;
        }
        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-links li { margin-bottom: .48rem; }
        .footer-links a { color: var(--ink-2); font-size: .9rem; }
        .footer-links a:hover { color: var(--primary); }
        .footer-copy {
            border-top: 1px solid var(--line);
            margin-top: 2.2rem;
            padding-top: 1.4rem;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: .6rem;
            color: var(--ink-2);
            font-size: .84rem;
        }

        /* mobile bottom nav */
        .mobile-tab {
            display: none;
            position: fixed;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 1080;
            background: rgba(255, 255, 255, 0.95);
            -webkit-backdrop-filter: saturate(1.5) blur(10px);
            backdrop-filter: saturate(1.5) blur(10px);
            border-top: 1px solid var(--line);
            padding: .45rem .6rem calc(.45rem + env(safe-area-inset-bottom));
            justify-content: space-around;
            align-items: center;
        }
        .m-tab {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: .12rem;
            font-size: .7rem;
            color: var(--ink-2);
            min-width: 52px;
            padding: .2rem .3rem;
        }
        .m-tab i { font-size: 1.25rem; line-height: 1; }
        .m-tab:hover,
        .m-tab.active { color: var(--primary); }
        .m-main {
            width: 52px;
            height: 52px;
            background: var(--primary);
            border: 4px solid var(--surface);
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: #fff;
            box-shadow: 0 8px 18px rgba(242, 140, 90, 0.32);
            transform: translateY(-10px);
            padding-left: .14rem;
        }
        .m-main:hover,
        .m-main.active { background: var(--primary-600); color: #fff; }

        @media (max-width: 767.98px) {
            body { padding-bottom: 66px; }
            .topnav, .nav-cta { display: none !important; }
            .site-header .header-inner { min-height: 66px; justify-content: space-between; }
            .mobile-tab { display: flex; }
            .category-hero { padding: 2.4rem 0 2.2rem; }
            .hero-miniplayer { display: none; }
            .section-head h2 { font-size: 1.5rem; }
            .section-title-line h2 { font-size: 1.35rem; }
            .topic-pick { padding: 1.2rem; }
            .quality-hd { padding: 2.6rem 0; }
            .data-strips { gap: .6rem; padding: 1rem; }
            .data-strips strong { font-size: 1.3rem; }
            .member-card { padding: 1.6rem 1.2rem; }
            .footer-cta { padding: 2rem 1.2rem; }
            .footer-cta h3 { font-size: 1.4rem; }
        }
        @media (min-width: 768px) and (max-width: 991.98px) {
            .topnav a { padding: .5rem .6rem; font-size: .9rem; }
            .brand { font-size: 1.2rem; }
        }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}