/* roulang page: index */
:root {
      --color-primary: #1f4f46;
      --color-primary-dark: #143b34;
      --color-primary-soft: #e7f3ef;
      --color-accent: #d76f2b;
      --color-accent-soft: #fff1e8;
      --color-ink: #17201d;
      --color-muted: #66736f;
      --color-subtle: #f6f8f7;
      --color-panel: #ffffff;
      --color-line: #dfe7e3;
      --color-deep: #0e2420;
      --shadow-soft: 0 18px 45px rgba(20, 59, 52, .12);
      --shadow-card: 0 12px 30px rgba(23, 32, 29, .08);
      --radius-lg: 24px;
      --radius-md: 16px;
      --radius-sm: 10px;
      --container: 1180px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--color-ink);
      background: #fbfcfb;
      line-height: 1.65;
      text-rendering: optimizeLegibility;
    }

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

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

    button, input {
      font: inherit;
    }

    button {
      cursor: pointer;
    }

    ::selection {
      background: rgba(215, 111, 43, .22);
    }

    .site-container {
      width: min(var(--container), calc(100% - 40px));
      margin: 0 auto;
    }

    .skip-link {
      position: absolute;
      left: -999px;
      top: 12px;
      z-index: 1000;
      background: var(--color-deep);
      color: #fff;
      padding: 10px 14px;
      border-radius: 10px;
    }

    .skip-link:focus {
      left: 12px;
      outline: 3px solid rgba(215, 111, 43, .45);
    }

    .top-strip {
      background: var(--color-deep);
      color: rgba(255,255,255,.86);
      font-size: 13px;
      border-bottom: 1px solid rgba(255,255,255,.08);
    }

    .top-strip-inner {
      min-height: 36px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
    }

    .top-strip strong {
      color: #fff;
      font-weight: 700;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(255,255,255,.94);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--color-line);
      box-shadow: 0 8px 26px rgba(23, 32, 29, .05);
    }

    .nav-shell {
      min-height: 72px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      font-weight: 900;
      letter-spacing: 0;
      color: var(--color-primary-dark);
      white-space: nowrap;
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      border-radius: 12px;
      background: linear-gradient(135deg, var(--color-primary), #6a8f7e);
      color: #fff;
      display: grid;
      place-items: center;
      box-shadow: 0 12px 24px rgba(31, 79, 70, .22);
    }

    .brand-mark span {
      font-size: 15px;
      font-weight: 900;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 6px;
      padding: 5px;
      border: 1px solid var(--color-line);
      background: #f8faf9;
      border-radius: 999px;
    }

    .nav-link {
      padding: 9px 18px;
      border-radius: 999px;
      color: #34413d;
      font-size: 15px;
      font-weight: 700;
    }

    .nav-link:hover,
    .nav-link:focus-visible,
    .nav-link.active {
      color: #fff;
      background: var(--color-primary);
      outline: none;
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .search-box {
      display: flex;
      align-items: center;
      gap: 8px;
      min-width: 220px;
      padding: 9px 12px;
      border: 1px solid var(--color-line);
      border-radius: 999px;
      background: #fff;
      color: var(--color-muted);
      font-size: 14px;
    }

    .search-box input {
      width: 100%;
      border: 0;
      outline: 0;
      background: transparent;
      color: var(--color-ink);
    }

    .search-box:focus-within {
      border-color: rgba(31, 79, 70, .55);
      box-shadow: 0 0 0 4px rgba(31, 79, 70, .1);
    }

    .mobile-toggle {
      display: none;
      width: 44px;
      height: 44px;
      border: 1px solid var(--color-line);
      border-radius: 12px;
      background: #fff;
      color: var(--color-primary-dark);
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 44px;
      padding: 12px 18px;
      border-radius: 999px;
      border: 1px solid transparent;
      font-weight: 800;
      line-height: 1.2;
      white-space: nowrap;
    }

    .btn-primary {
      color: #fff;
      background: var(--color-primary);
      box-shadow: 0 12px 24px rgba(31, 79, 70, .22);
    }

    .btn-primary:hover,
    .btn-primary:focus-visible {
      background: var(--color-primary-dark);
      transform: translateY(-1px);
      box-shadow: 0 16px 30px rgba(31, 79, 70, .28);
      outline: none;
    }

    .btn-ghost {
      color: var(--color-primary-dark);
      border-color: rgba(31, 79, 70, .22);
      background: #fff;
    }

    .btn-ghost:hover,
    .btn-ghost:focus-visible {
      background: var(--color-primary-soft);
      border-color: rgba(31, 79, 70, .36);
      outline: none;
    }

    .btn-accent {
      color: #fff;
      background: var(--color-accent);
      box-shadow: 0 14px 28px rgba(215, 111, 43, .26);
    }

    .btn-accent:hover,
    .btn-accent:focus-visible {
      background: #be5f22;
      transform: translateY(-1px);
      outline: none;
    }

    .badge {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      padding: 7px 12px;
      border-radius: 999px;
      font-size: 13px;
      font-weight: 800;
      color: var(--color-primary-dark);
      background: var(--color-primary-soft);
      border: 1px solid rgba(31, 79, 70, .15);
    }

    .section {
      padding: 74px 0;
    }

    .section-tight {
      padding: 54px 0;
    }

    .section-head {
      max-width: 760px;
      margin-bottom: 28px;
    }

    .section-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--color-accent);
      font-weight: 900;
      font-size: 14px;
      margin-bottom: 10px;
    }

    .section-title {
      margin: 0;
      font-size: clamp(28px, 4vw, 44px);
      line-height: 1.15;
      letter-spacing: 0;
      color: var(--color-ink);
      font-weight: 950;
    }

    .section-desc {
      margin: 14px 0 0;
      color: var(--color-muted);
      font-size: 17px;
      max-width: 760px;
    }

    .hero {
      position: relative;
      overflow: hidden;
      padding: 46px 0 72px;
      background:
        radial-gradient(circle at 18% 18%, rgba(215, 111, 43, .14), transparent 26%),
        linear-gradient(180deg, #f7fbf9 0%, #ffffff 62%, #f4f7f5 100%);
      border-bottom: 1px solid var(--color-line);
    }

    .hero-stage {
      display: grid;
      grid-template-columns: minmax(0, 1fr);
      gap: 28px;
    }

    .coupon-wall {
      display: grid;
      grid-template-columns: 1.08fr .92fr;
      gap: 24px;
      align-items: stretch;
    }

    .main-coupon {
      position: relative;
      min-height: 430px;
      padding: clamp(28px, 5vw, 54px);
      border-radius: 30px;
      color: #fff;
      background:
        linear-gradient(135deg, rgba(14,36,32,.96), rgba(31,79,70,.94)),
        repeating-linear-gradient(90deg, transparent 0 24px, rgba(255,255,255,.06) 24px 25px);
      box-shadow: var(--shadow-soft);
      overflow: hidden;
    }

    .main-coupon:before,
    .main-coupon:after {
      content: "";
      position: absolute;
      top: 50%;
      width: 44px;
      height: 44px;
      border-radius: 999px;
      background: #f7fbf9;
      transform: translateY(-50%);
    }

    .main-coupon:before {
      left: -22px;
    }

    .main-coupon:after {
      right: -22px;
    }

    .coupon-content {
      position: relative;
      z-index: 1;
      max-width: 750px;
    }

    .hero h1 {
      margin: 18px 0 18px;
      max-width: 820px;
      font-size: clamp(34px, 6vw, 68px);
      line-height: 1.06;
      font-weight: 950;
      letter-spacing: 0;
    }

    .hero-intro {
      max-width: 720px;
      margin: 0;
      color: rgba(255,255,255,.84);
      font-size: clamp(16px, 2vw, 20px);
    }

    .coupon-row {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 14px;
      margin-top: 30px;
    }

    .coupon-value {
      display: inline-flex;
      flex-direction: column;
      min-width: 178px;
      padding: 18px 22px;
      border: 1px dashed rgba(255,255,255,.55);
      border-radius: 18px;
      background: rgba(255,255,255,.1);
    }

    .coupon-value strong {
      font-size: 38px;
      line-height: 1;
      color: #fff3e8;
    }

    .coupon-value span {
      margin-top: 6px;
      color: rgba(255,255,255,.78);
      font-size: 14px;
    }

    .hero-data {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 12px;
      margin-top: 28px;
      max-width: 720px;
    }

    .hero-data-item {
      padding: 14px;
      border-radius: 16px;
      background: rgba(255,255,255,.09);
      border: 1px solid rgba(255,255,255,.14);
    }

    .hero-data-item strong {
      display: block;
      font-size: 22px;
      color: #fff;
      line-height: 1.1;
    }

    .hero-data-item span {
      display: block;
      margin-top: 6px;
      color: rgba(255,255,255,.72);
      font-size: 13px;
    }

    .coupon-side {
      display: grid;
      gap: 16px;
    }

    .mini-coupon,
    .notice-panel {
      padding: 22px;
      border-radius: 24px;
      background: #fff;
      border: 1px solid var(--color-line);
      box-shadow: var(--shadow-card);
    }

    .mini-coupon {
      display: grid;
      grid-template-columns: auto 1fr;
      gap: 16px;
      align-items: center;
    }

    .coupon-icon {
      width: 60px;
      height: 60px;
      border-radius: 18px;
      display: grid;
      place-items: center;
      background: var(--color-accent-soft);
      color: var(--color-accent);
      font-size: 28px;
      font-weight: 900;
    }

    .mini-coupon h2,
    .notice-panel h2 {
      margin: 0 0 6px;
      font-size: 20px;
      line-height: 1.25;
      font-weight: 950;
    }

    .mini-coupon p,
    .notice-panel p {
      margin: 0;
      color: var(--color-muted);
      font-size: 15px;
    }

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

    .notice-list li {
      display: flex;
      gap: 10px;
      color: #41504b;
      font-size: 14px;
    }

    .notice-list li:before {
      content: "";
      width: 8px;
      height: 8px;
      flex: 0 0 8px;
      margin-top: 9px;
      border-radius: 999px;
      background: var(--color-accent);
    }

    .problem-band {
      background: #fff;
    }

    .problem-layout {
      display: grid;
      grid-template-columns: .72fr 1.28fr;
      gap: 26px;
      align-items: start;
    }

    .quote-card {
      padding: 28px;
      border-radius: var(--radius-lg);
      background: var(--color-deep);
      color: #fff;
      box-shadow: var(--shadow-soft);
    }

    .quote-card p {
      margin: 0;
      font-size: 22px;
      line-height: 1.45;
      font-weight: 850;
    }

    .quote-card span {
      display: block;
      margin-top: 16px;
      color: rgba(255,255,255,.66);
      font-size: 14px;
    }

    .pain-list {
      display: grid;
      gap: 14px;
    }

    .pain-item {
      display: grid;
      grid-template-columns: 54px 1fr;
      gap: 16px;
      padding: 18px;
      border: 1px solid var(--color-line);
      border-radius: 18px;
      background: #fff;
      box-shadow: 0 8px 20px rgba(23,32,29,.04);
    }

    .pain-num {
      width: 54px;
      height: 54px;
      border-radius: 16px;
      display: grid;
      place-items: center;
      background: var(--color-primary-soft);
      color: var(--color-primary-dark);
      font-weight: 950;
    }

    .pain-item h3 {
      margin: 0 0 5px;
      font-size: 18px;
      font-weight: 950;
    }

    .pain-item p {
      margin: 0;
      color: var(--color-muted);
      font-size: 15px;
    }

    .commission-section {
      background: var(--color-subtle);
    }

    .commission-layout {
      display: grid;
      grid-template-columns: 1fr 1.25fr;
      gap: 28px;
      align-items: stretch;
    }

    .commission-meter {
      padding: 28px;
      border-radius: var(--radius-lg);
      background: #fff;
      border: 1px solid var(--color-line);
      box-shadow: var(--shadow-card);
    }

    .meter-row {
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 16px;
      margin-bottom: 18px;
    }

    .meter-row strong {
      font-size: 48px;
      line-height: 1;
      color: var(--color-primary-dark);
    }

    .meter-row span {
      color: var(--color-muted);
      font-weight: 700;
    }

    .progress {
      height: 12px;
      border-radius: 999px;
      overflow: hidden;
      background: #e8eeeb;
    }

    .progress span {
      display: block;
      width: 76%;
      height: 100%;
      background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
      border-radius: inherit;
    }

    .commission-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 16px;
    }

    .feature-card {
      padding: 22px;
      border-radius: 20px;
      background: #fff;
      border: 1px solid var(--color-line);
      box-shadow: 0 10px 24px rgba(23,32,29,.05);
      transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    }

    .feature-card:hover {
      transform: translateY(-3px);
      border-color: rgba(31, 79, 70, .28);
      box-shadow: var(--shadow-card);
    }

    .feature-card h3 {
      margin: 12px 0 8px;
      font-size: 19px;
      font-weight: 950;
    }

    .feature-card p {
      margin: 0;
      color: var(--color-muted);
      font-size: 15px;
    }

    .icon-box {
      width: 42px;
      height: 42px;
      display: grid;
      place-items: center;
      border-radius: 14px;
      background: var(--color-primary-soft);
      color: var(--color-primary-dark);
      font-weight: 950;
      font-size: 20px;
    }

    .materials-section {
      background: #fff;
    }

    .materials-layout {
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 26px;
      align-items: start;
    }

    .material-board {
      border-radius: var(--radius-lg);
      border: 1px solid var(--color-line);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      background: #fff;
    }

    .board-head {
      padding: 18px 22px;
      display: flex;
      justify-content: space-between;
      gap: 16px;
      align-items: center;
      background: var(--color-deep);
      color: #fff;
    }

    .board-head strong {
      font-size: 18px;
    }

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

    .board-list li {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 16px;
      align-items: center;
      padding: 18px 22px;
      border-top: 1px solid var(--color-line);
    }

    .board-list h3 {
      margin: 0 0 4px;
      font-size: 17px;
      font-weight: 950;
    }

    .board-list p {
      margin: 0;
      color: var(--color-muted);
      font-size: 14px;
    }

    .format-pill {
      padding: 7px 10px;
      border-radius: 999px;
      background: var(--color-accent-soft);
      color: #a34c1c;
      font-size: 13px;
      font-weight: 850;
      white-space: nowrap;
    }

    .copy-card {
      padding: 24px;
      border-radius: var(--radius-lg);
      background: linear-gradient(180deg, var(--color-primary-soft), #fff);
      border: 1px solid rgba(31,79,70,.16);
    }

    .copy-card h3 {
      margin: 0 0 12px;
      font-size: 24px;
      font-weight: 950;
    }

    .copy-card p {
      margin: 0 0 18px;
      color: var(--color-muted);
    }

    .tag-row {
      display: flex;
      flex-wrap: wrap;
      gap: 9px;
    }

    .tag {
      padding: 8px 11px;
      border-radius: 999px;
      background: #fff;
      border: 1px solid var(--color-line);
      color: #42504b;
      font-size: 13px;
      font-weight: 800;
    }

    .news-section {
      background: var(--color-subtle);
    }

    .news-layout {
      display: grid;
      grid-template-columns: minmax(0, 1.35fr) minmax(280px, .65fr);
      gap: 26px;
      align-items: start;
    }

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

    .news-item a {
      display: grid;
      grid-template-columns: auto 1fr auto;
      gap: 14px;
      align-items: center;
      padding: 18px;
      border-radius: 18px;
      background: #fff;
      border: 1px solid var(--color-line);
      box-shadow: 0 8px 18px rgba(23,32,29,.04);
    }

    .news-item a:hover,
    .news-item a:focus-visible {
      border-color: rgba(31,79,70,.32);
      transform: translateY(-2px);
      box-shadow: var(--shadow-card);
      outline: none;
    }

    .news-date {
      min-width: 76px;
      text-align: center;
      padding: 10px 8px;
      border-radius: 14px;
      background: var(--color-primary-soft);
      color: var(--color-primary-dark);
      font-weight: 900;
      line-height: 1.2;
    }

    .news-item h3 {
      margin: 0 0 4px;
      font-size: 18px;
      font-weight: 950;
    }

    .news-item p {
      margin: 0;
      color: var(--color-muted);
      font-size: 14px;
    }

    .arrow {
      color: var(--color-accent);
      font-size: 22px;
      font-weight: 900;
    }

    .recommend-panel {
      padding: 24px;
      border-radius: var(--radius-lg);
      background: #fff;
      border: 1px solid var(--color-line);
      box-shadow: var(--shadow-card);
      position: sticky;
      top: 98px;
    }

    .recommend-panel h3 {
      margin: 0 0 14px;
      font-size: 22px;
      font-weight: 950;
    }

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

    .rank-list li {
      display: flex;
      gap: 12px;
      align-items: flex-start;
      padding-bottom: 12px;
      border-bottom: 1px solid var(--color-line);
    }

    .rank-list li:last-child {
      border-bottom: 0;
      padding-bottom: 0;
    }

    .rank-list em {
      width: 28px;
      height: 28px;
      display: grid;
      place-items: center;
      border-radius: 10px;
      background: var(--color-accent-soft);
      color: var(--color-accent);
      font-style: normal;
      font-weight: 950;
      flex: 0 0 28px;
    }

    .rank-list strong {
      display: block;
      line-height: 1.35;
      font-size: 15px;
    }

    .rank-list span {
      display: block;
      margin-top: 3px;
      color: var(--color-muted);
      font-size: 13px;
    }

    .security-section {
      background: #fff;
    }

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

    .security-card {
      padding: 22px;
      min-height: 188px;
      border-radius: 20px;
      background: #fff;
      border: 1px solid var(--color-line);
      box-shadow: 0 10px 22px rgba(23,32,29,.05);
    }

    .security-card h3 {
      margin: 14px 0 8px;
      font-size: 18px;
      font-weight: 950;
    }

    .security-card p {
      margin: 0;
      color: var(--color-muted);
      font-size: 14px;
    }

    .collections-section {
      background: linear-gradient(180deg, #f8faf9 0%, #fff 100%);
    }

    .collection-strip {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 16px;
    }

    .collection-card {
      padding: 24px;
      border-radius: var(--radius-lg);
      background: #fff;
      border: 1px solid var(--color-line);
      box-shadow: var(--shadow-card);
    }

    .collection-card .meta {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 12px;
      margin-bottom: 18px;
      color: var(--color-muted);
      font-size: 13px;
      font-weight: 800;
    }

    .collection-card h3 {
      margin: 0 0 9px;
      font-size: 22px;
      font-weight: 950;
    }

    .collection-card p {
      margin: 0 0 18px;
      color: var(--color-muted);
      font-size: 15px;
    }

    .text-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--color-primary-dark);
      font-weight: 900;
    }

    .text-link:hover,
    .text-link:focus-visible {
      color: var(--color-accent);
      outline: none;
    }

    .member-section {
      background: var(--color-deep);
      color: #fff;
    }

    .member-section .section-title,
    .member-section .section-desc {
      color: #fff;
    }

    .member-section .section-desc {
      color: rgba(255,255,255,.72);
    }

    .member-layout {
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      gap: 24px;
      align-items: center;
    }

    .member-card {
      padding: 28px;
      border-radius: var(--radius-lg);
      background: rgba(255,255,255,.08);
      border: 1px solid rgba(255,255,255,.14);
    }

    .member-card strong {
      display: block;
      font-size: 44px;
      line-height: 1;
      color: #fff3e8;
    }

    .member-card span {
      display: block;
      margin-top: 8px;
      color: rgba(255,255,255,.72);
    }

    .rights-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 14px;
    }

    .right-item {
      padding: 20px;
      border-radius: 18px;
      background: rgba(255,255,255,.08);
      border: 1px solid rgba(255,255,255,.12);
    }

    .right-item h3 {
      margin: 0 0 8px;
      font-size: 18px;
      font-weight: 950;
    }

    .right-item p {
      margin: 0;
      color: rgba(255,255,255,.72);
      font-size: 14px;
    }

    .updates-section {
      background: #fff;
    }

    .timeline {
      position: relative;
      display: grid;
      gap: 16px;
      max-width: 880px;
    }

    .timeline:before {
      content: "";
      position: absolute;
      left: 22px;
      top: 18px;
      bottom: 18px;
      width: 2px;
      background: var(--color-line);
    }

    .timeline-item {
      position: relative;
      display: grid;
      grid-template-columns: 46px 1fr;
      gap: 18px;
    }

    .timeline-dot {
      position: relative;
      z-index: 1;
      width: 46px;
      height: 46px;
      border-radius: 16px;
      display: grid;
      place-items: center;
      background: var(--color-primary);
      color: #fff;
      font-weight: 950;
      box-shadow: 0 8px 18px rgba(31,79,70,.22);
    }

    .timeline-body {
      padding: 18px 20px;
      border-radius: 18px;
      background: var(--color-subtle);
      border: 1px solid var(--color-line);
    }

    .timeline-body h3 {
      margin: 0 0 6px;
      font-size: 18px;
      font-weight: 950;
    }

    .timeline-body p {
      margin: 0;
      color: var(--color-muted);
      font-size: 15px;
    }

    .proof-section {
      background: var(--color-subtle);
    }

    .proof-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
    }

    .testimonial {
      padding: 26px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--color-line);
      background: #fff;
      box-shadow: var(--shadow-card);
    }

    .testimonial p {
      margin: 0;
      color: #33413d;
      font-size: 16px;
    }

    .testimonial strong {
      display: block;
      margin-top: 16px;
      color: var(--color-primary-dark);
      font-weight: 950;
    }

    .faq-section {
      background: #fff;
    }

    .faq-list {
      display: grid;
      gap: 14px;
      max-width: 920px;
    }

    .faq-item {
      border: 1px solid var(--color-line);
      border-radius: 18px;
      background: #fff;
      overflow: hidden;
      box-shadow: 0 8px 20px rgba(23,32,29,.04);
    }

    .faq-item summary {
      list-style: none;
      cursor: pointer;
      padding: 19px 22px;
      font-size: 18px;
      font-weight: 950;
      display: flex;
      justify-content: space-between;
      gap: 16px;
      align-items: center;
    }

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

    .faq-item summary:after {
      content: "+";
      width: 28px;
      height: 28px;
      flex: 0 0 28px;
      border-radius: 999px;
      display: grid;
      place-items: center;
      background: var(--color-primary-soft);
      color: var(--color-primary-dark);
      font-weight: 900;
    }

    .faq-item[open] summary:after {
      content: "-";
      background: var(--color-accent-soft);
      color: var(--color-accent);
    }

    .faq-item p {
      margin: 0;
      padding: 0 22px 22px;
      color: var(--color-muted);
    }

    .join-section {
      padding: 72px 0;
      background:
        linear-gradient(135deg, rgba(31,79,70,.96), rgba(14,36,32,.98));
      color: #fff;
    }

    .join-box {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 24px;
      align-items: center;
    }

    .join-box h2 {
      margin: 0;
      font-size: clamp(28px, 4vw, 46px);
      line-height: 1.14;
      font-weight: 950;
    }

    .join-box p {
      margin: 12px 0 0;
      max-width: 740px;
      color: rgba(255,255,255,.75);
      font-size: 17px;
    }

    .join-actions {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
      justify-content: flex-end;
    }

    .footer {
      background: #0a1715;
      color: rgba(255,255,255,.72);
      padding: 44px 0 28px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.15fr .85fr;
      gap: 32px;
      align-items: start;
      padding-bottom: 28px;
      border-bottom: 1px solid rgba(255,255,255,.1);
    }

    .footer-brand {
      display: flex;
      align-items: center;
      gap: 12px;
      color: #fff;
      font-size: 20px;
      font-weight: 950;
    }

    .footer p {
      margin: 12px 0 0;
      max-width: 680px;
    }

    .footer-links {
      display: flex;
      justify-content: flex-end;
      gap: 18px;
      flex-wrap: wrap;
    }

    .footer-links a:hover,
    .footer-links a:focus-visible {
      color: #fff;
      outline: none;
    }

    .copyright {
      margin-top: 24px;
      display: flex;
      justify-content: space-between;
      gap: 18px;
      flex-wrap: wrap;
      font-size: 13px;
      color: rgba(255,255,255,.56);
    }

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

      .coupon-wall,
      .commission-layout,
      .materials-layout,
      .problem-layout,
      .member-layout,
      .news-layout {
        grid-template-columns: 1fr;
      }

      .main-coupon {
        min-height: auto;
      }

      .recommend-panel {
        position: static;
      }

      .security-grid,
      .collection-strip {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .join-box {
        grid-template-columns: 1fr;
      }

      .join-actions {
        justify-content: flex-start;
      }
    }

    @media (max-width: 768px) {
      .top-strip-inner {
        flex-direction: column;
        align-items: flex-start;
        padding: 8px 0;
        gap: 4px;
      }

      .nav-shell {
        min-height: 66px;
      }

      .nav-links,
      .nav-actions .btn {
        display: none;
      }

      .mobile-toggle {
        display: grid;
        place-items: center;
      }

      .mobile-menu {
        display: none;
        padding: 0 0 14px;
      }

      .mobile-menu.open {
        display: block;
      }

      .mobile-menu a {
        display: block;
        padding: 13px 14px;
        border: 1px solid var(--color-line);
        border-radius: 14px;
        background: #fff;
        font-weight: 850;
      }

      .section {
        padding: 56px 0;
      }

      .site-container {
        width: min(100% - 28px, var(--container));
      }

      .hero {
        padding: 32px 0 56px;
      }

      .coupon-row {
        align-items: stretch;
      }

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

      .hero-data,
      .commission-grid,
      .rights-grid,
      .proof-layout {
        grid-template-columns: 1fr;
      }

      .main-coupon {
        border-radius: 24px;
      }

      .mini-coupon {
        grid-template-columns: 1fr;
      }

      .board-list li,
      .news-item a {
        grid-template-columns: 1fr;
      }

      .news-date {
        width: fit-content;
      }

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

      .footer-links {
        justify-content: flex-start;
      }
    }

    @media (max-width: 520px) {
      .brand {
        font-size: 16px;
      }

      .brand-mark {
        width: 38px;
        height: 38px;
      }

      .hero h1 {
        font-size: 34px;
      }

      .hero-data,
      .security-grid,
      .collection-strip {
        grid-template-columns: 1fr;
      }

      .coupon-value {
        width: 100%;
      }

      .btn {
        width: 100%;
        white-space: normal;
        text-align: center;
      }

      .section-title {
        font-size: 28px;
      }

      .member-card strong {
        font-size: 36px;
      }

      .timeline-item {
        grid-template-columns: 38px 1fr;
        gap: 12px;
      }

      .timeline:before {
        left: 18px;
      }

      .timeline-dot {
        width: 38px;
        height: 38px;
        border-radius: 12px;
      }
    }