/* roulang page: index */
:root {
      --bg: #07111f;
      --bg-2: #0b1830;
      --surface: rgba(16, 32, 59, .72);
      --surface-strong: rgba(19, 42, 78, .9);
      --glass: rgba(255, 255, 255, .08);
      --glass-2: rgba(255, 255, 255, .13);
      --text: #eef6ff;
      --muted: #9fb2ca;
      --soft: #c9d9ef;
      --primary: #41d7ff;
      --primary-2: #6f7cff;
      --accent: #9cffc8;
      --warning: #ffe38a;
      --danger: #ff7ca3;
      --line: rgba(197, 219, 255, .16);
      --line-strong: rgba(197, 219, 255, .28);
      --shadow: 0 24px 70px rgba(0, 0, 0, .35);
      --shadow-soft: 0 14px 36px rgba(0, 0, 0, .22);
      --radius-xl: 30px;
      --radius-lg: 22px;
      --radius-md: 16px;
      --radius-sm: 12px;
      --nav-h: 72px;
      --ease: all .28s ease;
    }

    * {
      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", Arial, sans-serif;
      color: var(--text);
      line-height: 1.7;
      background:
        radial-gradient(circle at 10% 5%, rgba(65, 215, 255, .2), transparent 30%),
        radial-gradient(circle at 88% 12%, rgba(111, 124, 255, .26), transparent 34%),
        radial-gradient(circle at 52% 78%, rgba(156, 255, 200, .12), transparent 30%),
        linear-gradient(180deg, #06101e 0%, #081327 42%, #07111f 100%);
      min-height: 100vh;
      overflow-x: hidden;
    }

    body::before {
      content: "";
      position: fixed;
      inset: 0;
      pointer-events: none;
      z-index: -1;
      background-image:
        linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
      background-size: 44px 44px;
      mask-image: linear-gradient(to bottom, rgba(0,0,0,.86), transparent 80%);
    }

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

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

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

    button, input {
      font: inherit;
    }

    input:focus, button:focus, a:focus {
      outline: 3px solid rgba(65, 215, 255, .28);
      outline-offset: 3px;
    }

    .container {
      width: min(1180px, calc(100% - 32px));
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      backdrop-filter: blur(18px);
      background: rgba(5, 13, 27, .72);
      border-bottom: 1px solid var(--line);
    }

    .topbar {
      min-height: var(--nav-h);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 22px;
      padding: 14px 0;
    }

    .brand-link {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      font-weight: 900;
      letter-spacing: -.02em;
      color: var(--text);
      white-space: nowrap;
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      border-radius: 15px;
      display: grid;
      place-items: center;
      color: #03111c;
      font-weight: 950;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      box-shadow: 0 0 28px rgba(65, 215, 255, .38);
    }

    .brand-name {
      font-size: 1.08rem;
    }

    .nav-tools {
      display: flex;
      align-items: center;
      justify-content: flex-end;
      gap: 12px;
      flex: 1;
    }

    .site-search {
      width: min(420px, 44vw);
      position: relative;
    }

    .site-search input {
      width: 100%;
      border: 1px solid var(--line);
      background: rgba(255,255,255,.08);
      color: var(--text);
      border-radius: 999px;
      padding: 12px 44px 12px 18px;
      transition: var(--ease);
    }

    .site-search input::placeholder {
      color: rgba(201,217,239,.62);
    }

    .site-search input:focus {
      border-color: rgba(65,215,255,.6);
      box-shadow: 0 0 0 6px rgba(65,215,255,.08);
      background: rgba(255,255,255,.12);
    }

    .search-dot {
      position: absolute;
      right: 16px;
      top: 50%;
      width: 12px;
      height: 12px;
      transform: translateY(-50%);
      border-radius: 50%;
      background: var(--accent);
      box-shadow: 0 0 18px rgba(156,255,200,.8);
    }

    .nav-cta {
      border: 1px solid rgba(65,215,255,.42);
      background: linear-gradient(135deg, rgba(65,215,255,.24), rgba(111,124,255,.18));
      color: var(--text);
      border-radius: 999px;
      padding: 11px 18px;
      font-weight: 800;
      box-shadow: 0 0 24px rgba(65,215,255,.12);
      white-space: nowrap;
    }

    .nav-cta:hover {
      transform: translateY(-2px);
      color: #fff;
      box-shadow: 0 0 34px rgba(65,215,255,.32);
      border-color: rgba(156,255,200,.58);
    }

    .channel-row {
      border-top: 1px solid rgba(197,219,255,.1);
    }

    .channel-scroll {
      display: flex;
      gap: 10px;
      overflow-x: auto;
      padding: 10px 0 12px;
      scrollbar-width: thin;
      scrollbar-color: rgba(65,215,255,.5) transparent;
    }

    .channel-pill {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 9px 15px;
      border: 1px solid var(--line);
      border-radius: 999px;
      color: var(--soft);
      background: rgba(255,255,255,.05);
      font-size: .94rem;
      white-space: nowrap;
    }

    .channel-pill.active,
    .channel-pill:hover {
      color: #06111d;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      border-color: transparent;
      box-shadow: 0 0 24px rgba(65,215,255,.26);
    }

    main {
      position: relative;
    }

    section {
      padding: 86px 0;
      position: relative;
    }

    .section-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 12px;
      border-radius: 999px;
      border: 1px solid rgba(65,215,255,.28);
      color: var(--accent);
      background: rgba(65,215,255,.08);
      font-weight: 800;
      font-size: .88rem;
      margin-bottom: 16px;
    }

    .section-title {
      font-size: clamp(2rem, 4vw, 3.15rem);
      line-height: 1.14;
      letter-spacing: -.05em;
      margin: 0 0 18px;
      font-weight: 950;
    }

    .section-desc {
      max-width: 760px;
      color: var(--muted);
      margin: 0;
      font-size: 1.05rem;
    }

    .btn-glow {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      border: 0;
      border-radius: 999px;
      padding: 14px 22px;
      font-weight: 900;
      color: #03111c;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      box-shadow: 0 0 28px rgba(65,215,255,.38), inset 0 1px 0 rgba(255,255,255,.45);
      transition: var(--ease);
    }

    .btn-glow:hover {
      color: #03111c;
      transform: translateY(-3px);
      box-shadow: 0 0 48px rgba(65,215,255,.58), 0 16px 34px rgba(0,0,0,.2);
    }

    .btn-ghost {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      border: 1px solid var(--line-strong);
      border-radius: 999px;
      padding: 13px 20px;
      color: var(--text);
      font-weight: 850;
      background: rgba(255,255,255,.06);
      transition: var(--ease);
    }

    .btn-ghost:hover {
      color: #fff;
      transform: translateY(-3px);
      border-color: rgba(65,215,255,.5);
      background: rgba(65,215,255,.12);
    }

    .hero {
      padding: 54px 0 92px;
    }

    .coupon-wall {
      border: 1px solid var(--line);
      border-radius: 36px;
      overflow: hidden;
      background:
        linear-gradient(135deg, rgba(65,215,255,.15), rgba(111,124,255,.1) 48%, rgba(156,255,200,.1)),
        rgba(255,255,255,.05);
      box-shadow: var(--shadow);
      position: relative;
    }

    .coupon-wall::before {
      content: "";
      position: absolute;
      inset: -1px;
      background:
        radial-gradient(circle at 30% 0%, rgba(65,215,255,.36), transparent 34%),
        radial-gradient(circle at 78% 24%, rgba(156,255,200,.2), transparent 28%);
      pointer-events: none;
    }

    .hero-grid {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: 1.05fr .95fr;
      gap: 0;
      min-height: 560px;
    }

    .hero-copy {
      padding: clamp(30px, 5vw, 62px);
      display: flex;
      flex-direction: column;
      justify-content: center;
    }

    .hero h1 {
      font-size: clamp(2.35rem, 5.7vw, 5.35rem);
      line-height: .98;
      letter-spacing: -.07em;
      font-weight: 950;
      margin: 0 0 22px;
    }

    .hero-lead {
      color: var(--soft);
      font-size: clamp(1.02rem, 1.45vw, 1.18rem);
      max-width: 690px;
      margin: 0 0 28px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin: 4px 0 28px;
    }

    .hero-points {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .data-chip {
      padding: 12px 14px;
      border: 1px solid var(--line);
      border-radius: 16px;
      background: rgba(255,255,255,.07);
      color: var(--soft);
      min-width: 142px;
    }

    .data-chip strong {
      color: #fff;
      display: block;
      font-size: 1.18rem;
      line-height: 1.1;
    }

    .coupon-stage {
      padding: clamp(22px, 4vw, 44px);
      display: grid;
      align-content: center;
      gap: 18px;
      background: linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.02));
      border-left: 1px solid var(--line);
    }

    .main-coupon {
      position: relative;
      border-radius: 30px;
      padding: 30px;
      min-height: 270px;
      overflow: hidden;
      background:
        radial-gradient(circle at 15% 10%, rgba(255,255,255,.3), transparent 20%),
        linear-gradient(135deg, #43ddff 0%, #7c82ff 50%, #9cffc8 100%);
      color: #06111d;
      box-shadow: 0 28px 70px rgba(65,215,255,.28);
      transform: rotate(-1deg);
    }

    .main-coupon::before,
    .main-coupon::after {
      content: "";
      position: absolute;
      top: 50%;
      width: 32px;
      height: 32px;
      border-radius: 50%;
      background: #0b1830;
      transform: translateY(-50%);
    }

    .main-coupon::before {
      left: -16px;
    }

    .main-coupon::after {
      right: -16px;
    }

    .coupon-label {
      display: inline-flex;
      padding: 7px 12px;
      border-radius: 999px;
      background: rgba(6,17,29,.14);
      font-weight: 950;
      margin-bottom: 18px;
    }

    .coupon-title {
      font-size: clamp(2rem, 4vw, 3.25rem);
      line-height: 1;
      font-weight: 950;
      letter-spacing: -.06em;
      margin-bottom: 12px;
    }

    .coupon-text {
      max-width: 360px;
      margin-bottom: 22px;
      font-weight: 750;
    }

    .coupon-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 999px;
      padding: 12px 18px;
      color: #fff;
      background: #06111d;
      font-weight: 950;
      box-shadow: 0 14px 30px rgba(0,0,0,.22);
    }

    .coupon-btn:hover {
      color: var(--accent);
      transform: translateY(-2px);
    }

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

    .mini-coupon {
      border: 1px solid var(--line);
      border-radius: 20px;
      padding: 17px;
      background: rgba(255,255,255,.08);
      backdrop-filter: blur(16px);
      transition: var(--ease);
    }

    .mini-coupon:hover {
      transform: translateY(-4px);
      border-color: rgba(65,215,255,.42);
      box-shadow: var(--shadow-soft);
    }

    .mini-coupon b {
      display: block;
      margin-bottom: 6px;
      color: #fff;
    }

    .mini-coupon span {
      color: var(--muted);
      font-size: .94rem;
    }

    .story-shell {
      display: grid;
      grid-template-columns: .82fr 1.18fr;
      gap: 28px;
      align-items: stretch;
    }

    .glass-card {
      border: 1px solid var(--line);
      border-radius: var(--radius-xl);
      background: var(--surface);
      box-shadow: var(--shadow-soft);
      backdrop-filter: blur(20px);
      transition: var(--ease);
    }

    .glass-card:hover {
      transform: translateY(-5px);
      border-color: rgba(65,215,255,.34);
      box-shadow: 0 22px 54px rgba(0,0,0,.3);
    }

    .story-panel {
      padding: 30px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      min-height: 390px;
    }

    .story-panel .big-number {
      font-size: 4.2rem;
      line-height: 1;
      letter-spacing: -.08em;
      font-weight: 950;
      color: var(--primary);
      text-shadow: 0 0 30px rgba(65,215,255,.38);
    }

    .story-list {
      padding: 30px;
    }

    .story-row {
      display: grid;
      grid-template-columns: 88px 1fr;
      gap: 20px;
      padding: 20px 0;
      border-bottom: 1px solid var(--line);
    }

    .story-row:last-child {
      border-bottom: 0;
    }

    .story-row time {
      color: var(--accent);
      font-weight: 900;
    }

    .story-row h3 {
      margin: 0 0 6px;
      font-size: 1.16rem;
      font-weight: 900;
    }

    .story-row p {
      color: var(--muted);
      margin: 0;
    }

    .featured-layout {
      display: grid;
      grid-template-columns: 1.08fr .92fr;
      gap: 24px;
      margin-top: 34px;
    }

    .feature-large {
      padding: 32px;
      min-height: 420px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      background:
        linear-gradient(135deg, rgba(65,215,255,.14), rgba(111,124,255,.08)),
        var(--surface);
    }

    .feature-large h3 {
      font-size: clamp(1.8rem, 3vw, 2.7rem);
      letter-spacing: -.05em;
      line-height: 1.12;
      margin: 14px 0;
      font-weight: 950;
    }

    .feature-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .badge-soft {
      display: inline-flex;
      align-items: center;
      border: 1px solid var(--line);
      color: var(--soft);
      background: rgba(255,255,255,.07);
      border-radius: 999px;
      padding: 7px 11px;
      font-weight: 800;
      font-size: .86rem;
    }

    .feature-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 16px;
    }

    .content-card {
      padding: 22px;
      border: 1px solid var(--line);
      border-radius: 24px;
      background: rgba(255,255,255,.07);
      backdrop-filter: blur(16px);
      transition: var(--ease);
    }

    .content-card:hover {
      transform: translateY(-5px);
      background: rgba(255,255,255,.1);
      border-color: rgba(65,215,255,.42);
    }

    .content-card .icon {
      width: 42px;
      height: 42px;
      border-radius: 14px;
      display: grid;
      place-items: center;
      margin-bottom: 14px;
      background: rgba(65,215,255,.16);
      color: var(--accent);
      font-weight: 950;
    }

    .content-card h3, .content-card h4 {
      margin: 0 0 8px;
      font-weight: 900;
      font-size: 1.15rem;
    }

    .content-card p {
      margin: 0;
      color: var(--muted);
    }

    .steps-section {
      padding-top: 30px;
    }

    .steps-track {
      margin-top: 34px;
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }

    .step-card {
      position: relative;
      padding: 26px;
      border-radius: 26px;
      background: linear-gradient(180deg, rgba(255,255,255,.1), rgba(255,255,255,.055));
      border: 1px solid var(--line);
      overflow: hidden;
      min-height: 230px;
      transition: var(--ease);
    }

    .step-card:hover {
      transform: translateY(-6px);
      border-color: rgba(156,255,200,.4);
    }

    .step-index {
      width: 48px;
      height: 48px;
      display: grid;
      place-items: center;
      border-radius: 16px;
      color: #06111d;
      background: linear-gradient(135deg, var(--accent), var(--primary));
      font-weight: 950;
      margin-bottom: 20px;
    }

    .step-card h3 {
      font-weight: 950;
      margin-bottom: 10px;
    }

    .step-card p {
      color: var(--muted);
      margin: 0;
    }

    .demo-section {
      padding-top: 30px;
    }

    .demo-split {
      margin-top: 34px;
      display: grid;
      grid-template-columns: .95fr 1.05fr;
      gap: 24px;
      align-items: center;
    }

    .demo-board {
      padding: 26px;
      border-radius: 30px;
      border: 1px solid var(--line);
      background: rgba(255,255,255,.075);
      box-shadow: var(--shadow-soft);
    }

    .demo-bar {
      display: flex;
      gap: 8px;
      margin-bottom: 20px;
    }

    .demo-bar span {
      width: 12px;
      height: 12px;
      border-radius: 50%;
      background: rgba(255,255,255,.28);
    }

    .demo-bar span:nth-child(1) { background: var(--danger); }
    .demo-bar span:nth-child(2) { background: var(--warning); }
    .demo-bar span:nth-child(3) { background: var(--accent); }

    .demo-line {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 16px;
      border-radius: 18px;
      background: rgba(6,17,29,.42);
      border: 1px solid rgba(197,219,255,.11);
      margin-bottom: 12px;
    }

    .demo-line strong {
      color: #fff;
    }

    .demo-line span {
      color: var(--muted);
      font-size: .92rem;
    }

    .demo-status {
      color: var(--accent);
      font-weight: 900;
      white-space: nowrap;
    }

    .bubble-wrap {
      margin-top: 36px;
      display: grid;
      grid-template-columns: 1fr 1.2fr 1fr;
      gap: 18px;
      align-items: center;
    }

    .quote-bubble {
      border: 1px solid var(--line);
      border-radius: 28px;
      padding: 24px;
      background: rgba(255,255,255,.075);
      position: relative;
      box-shadow: var(--shadow-soft);
      transition: var(--ease);
    }

    .quote-bubble:hover {
      transform: translateY(-5px) scale(1.01);
      border-color: rgba(65,215,255,.42);
    }

    .quote-bubble.featured {
      padding: 34px;
      background:
        radial-gradient(circle at 90% 0%, rgba(65,215,255,.22), transparent 36%),
        rgba(255,255,255,.1);
    }

    .quote-bubble p {
      color: var(--soft);
      margin-bottom: 18px;
      font-size: 1rem;
    }

    .quote-user {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      font-weight: 950;
      color: #06111d;
      background: linear-gradient(135deg, var(--primary), var(--accent));
    }

    .quote-user b {
      display: block;
    }

    .quote-user span {
      color: var(--muted);
      font-size: .9rem;
    }

    .news-layout {
      display: grid;
      grid-template-columns: 1.2fr .8fr;
      gap: 24px;
      margin-top: 34px;
    }

    .news-list {
      border: 1px solid var(--line);
      border-radius: var(--radius-xl);
      overflow: hidden;
      background: rgba(255,255,255,.065);
    }

    .news-item {
      display: grid;
      grid-template-columns: 128px 1fr auto;
      gap: 18px;
      align-items: center;
      padding: 20px 22px;
      border-bottom: 1px solid var(--line);
      transition: var(--ease);
    }

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

    .news-item:hover {
      background: rgba(65,215,255,.08);
    }

    .news-date {
      color: var(--accent);
      font-weight: 900;
      font-size: .92rem;
    }

    .news-item h3 {
      margin: 0 0 4px;
      font-size: 1.08rem;
      font-weight: 900;
    }

    .news-item p {
      margin: 0;
      color: var(--muted);
      font-size: .95rem;
    }

    .news-arrow {
      color: var(--primary);
      font-weight: 950;
      font-size: 1.3rem;
    }

    .recommend-card {
      padding: 28px;
      border-radius: var(--radius-xl);
      border: 1px solid rgba(65,215,255,.28);
      background:
        radial-gradient(circle at 85% 15%, rgba(156,255,200,.2), transparent 30%),
        rgba(255,255,255,.075);
      height: 100%;
    }

    .recommend-card h3 {
      font-size: 1.6rem;
      font-weight: 950;
      letter-spacing: -.03em;
      margin-bottom: 14px;
    }

    .check-list {
      list-style: none;
      padding: 0;
      margin: 20px 0 24px;
      display: grid;
      gap: 12px;
    }

    .check-list li {
      display: flex;
      gap: 10px;
      color: var(--soft);
    }

    .check-list li::before {
      content: "✓";
      color: var(--accent);
      font-weight: 950;
    }

    .faq-grid {
      margin-top: 34px;
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }

    .faq-card {
      padding: 24px;
      border: 1px solid var(--line);
      border-radius: 24px;
      background: rgba(255,255,255,.068);
      transition: var(--ease);
    }

    .faq-card:hover {
      transform: translateY(-5px);
      border-color: rgba(156,255,200,.42);
    }

    .faq-card h3 {
      font-size: 1.1rem;
      font-weight: 950;
      margin-bottom: 10px;
    }

    .faq-card p {
      color: var(--muted);
      margin: 0;
    }

    .subscribe-shell {
      border-radius: 36px;
      border: 1px solid var(--line);
      background:
        radial-gradient(circle at 12% 10%, rgba(65,215,255,.28), transparent 30%),
        radial-gradient(circle at 92% 18%, rgba(156,255,200,.2), transparent 26%),
        linear-gradient(135deg, rgba(255,255,255,.1), rgba(255,255,255,.045));
      box-shadow: var(--shadow);
      padding: clamp(28px, 5vw, 54px);
      display: grid;
      grid-template-columns: 1fr .9fr;
      gap: 34px;
      align-items: center;
    }

    .subscribe-form {
      display: grid;
      gap: 14px;
      padding: 22px;
      border-radius: 26px;
      background: rgba(6,17,29,.42);
      border: 1px solid var(--line);
    }

    .form-control-custom {
      width: 100%;
      border: 1px solid var(--line);
      background: rgba(255,255,255,.08);
      color: var(--text);
      border-radius: 16px;
      padding: 14px 15px;
      transition: var(--ease);
    }

    .form-control-custom::placeholder {
      color: rgba(201,217,239,.62);
    }

    .form-control-custom:focus {
      border-color: rgba(65,215,255,.55);
      box-shadow: 0 0 0 6px rgba(65,215,255,.08);
      background: rgba(255,255,255,.12);
    }

    .form-note {
      color: var(--muted);
      font-size: .9rem;
      margin: 0;
    }

    .site-footer {
      padding: 48px 0 28px;
      border-top: 1px solid var(--line);
      background: rgba(4, 10, 20, .48);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 28px;
      align-items: start;
    }

    .footer-brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      font-weight: 950;
      margin-bottom: 14px;
    }

    .footer-desc {
      color: var(--muted);
      max-width: 610px;
      margin: 0;
    }

    .footer-links {
      display: flex;
      justify-content: flex-end;
      flex-wrap: wrap;
      gap: 10px;
    }

    .footer-links a {
      padding: 9px 13px;
      border-radius: 999px;
      color: var(--soft);
      border: 1px solid var(--line);
      background: rgba(255,255,255,.04);
    }

    .footer-links a:hover {
      color: #06111d;
      background: var(--primary);
      border-color: transparent;
    }

    .copyright {
      margin-top: 30px;
      padding-top: 22px;
      border-top: 1px solid rgba(197,219,255,.1);
      color: rgba(201,217,239,.72);
      font-size: .92rem;
      display: flex;
      justify-content: space-between;
      gap: 16px;
      flex-wrap: wrap;
    }

    @media (max-width: 1024px) {
      section {
        padding: 72px 0;
      }

      .hero-grid,
      .story-shell,
      .featured-layout,
      .demo-split,
      .news-layout,
      .subscribe-shell,
      .footer-grid {
        grid-template-columns: 1fr;
      }

      .coupon-stage {
        border-left: 0;
        border-top: 1px solid var(--line);
      }

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

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

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

    @media (max-width: 768px) {
      :root {
        --nav-h: auto;
      }

      .topbar {
        flex-direction: column;
        align-items: stretch;
        gap: 14px;
      }

      .nav-tools {
        flex-direction: column;
        align-items: stretch;
      }

      .site-search {
        width: 100%;
      }

      .nav-cta {
        text-align: center;
      }

      .hero {
        padding-top: 28px;
      }

      .coupon-wall,
      .subscribe-shell {
        border-radius: 26px;
      }

      .hero-copy,
      .coupon-stage {
        padding: 26px;
      }

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

      .btn-glow,
      .btn-ghost {
        width: 100%;
      }

      .mini-coupons,
      .faq-grid,
      .steps-track {
        grid-template-columns: 1fr;
      }

      .story-row {
        grid-template-columns: 1fr;
        gap: 8px;
      }

      .news-item {
        grid-template-columns: 1fr;
        gap: 8px;
      }

      .news-arrow {
        display: none;
      }
    }

    @media (max-width: 520px) {
      .container {
        width: min(100% - 24px, 1180px);
      }

      section {
        padding: 58px 0;
      }

      .brand-name {
        font-size: 1rem;
      }

      .hero h1 {
        font-size: 2.42rem;
      }

      .main-coupon {
        padding: 24px;
        transform: none;
      }

      .coupon-title {
        font-size: 2.1rem;
      }

      .story-panel,
      .story-list,
      .feature-large,
      .content-card,
      .recommend-card,
      .faq-card {
        padding: 22px;
      }

      .data-chip {
        width: 100%;
      }

      .copyright {
        display: block;
      }

      .copyright span {
        display: block;
        margin-top: 8px;
      }
    }

/* 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}