/* roulang page: index */
:root {
      --brand: #7c3aed;
      --brand-dark: #5b21b6;
      --brand-soft: #ede9fe;
      --accent: #ffb020;
      --accent-deep: #f97316;
      --ink: #151126;
      --muted: #6b6478;
      --weak: #938aa3;
      --bg: #f7f5fb;
      --panel: #ffffff;
      --panel-2: #fbf8ff;
      --line: rgba(92, 69, 128, .14);
      --success: #16a34a;
      --danger: #ef4444;
      --radius-xs: 10px;
      --radius-sm: 14px;
      --radius: 22px;
      --radius-lg: 32px;
      --shadow-sm: 0 10px 28px rgba(43, 29, 79, .08);
      --shadow: 0 22px 60px rgba(48, 27, 94, .14);
      --shadow-strong: 0 28px 80px rgba(76, 29, 149, .22);
      --container: 1160px;
      --nav-height: 76px;
      --ease: cubic-bezier(.2, .75, .25, 1);
    }

    * {
      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(--ink);
      background:
        radial-gradient(circle at 15% 10%, rgba(124, 58, 237, .13), transparent 32%),
        radial-gradient(circle at 88% 12%, rgba(255, 176, 32, .16), transparent 28%),
        linear-gradient(180deg, #fff 0%, var(--bg) 38%, #fff 100%);
      line-height: 1.75;
      font-size: 16px;
      overflow-x: hidden;
      text-rendering: optimizeLegibility;
    }

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

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

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

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

    button:focus-visible,
    a:focus-visible,
    input:focus-visible,
    textarea:focus-visible,
    select:focus-visible {
      outline: 3px solid rgba(124, 58, 237, .28);
      outline-offset: 3px;
      border-radius: 12px;
    }

    ::selection {
      background: rgba(124, 58, 237, .18);
      color: var(--brand-dark);
    }

    .container-fluid,
    .container {
      --bs-gutter-x: 1.5rem;
    }

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

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      backdrop-filter: blur(18px);
      background: rgba(255, 255, 255, .88);
      border-bottom: 1px solid var(--line);
      box-shadow: 0 8px 26px rgba(35, 24, 64, .04);
    }

    .navbar {
      min-height: var(--nav-height);
      padding: 0;
    }

    .navbar-brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      color: var(--ink);
      font-weight: 900;
      letter-spacing: -.02em;
      font-size: 1.18rem;
      margin: 0;
      white-space: nowrap;
    }

    .logo-mark {
      width: 42px;
      height: 42px;
      border-radius: 15px;
      display: inline-grid;
      place-items: center;
      color: #fff;
      background:
        linear-gradient(135deg, rgba(255,255,255,.26), transparent 45%),
        linear-gradient(135deg, var(--brand), var(--accent-deep));
      box-shadow: 0 12px 28px rgba(124, 58, 237, .28);
      font-size: 18px;
    }

    .navbar-toggler {
      border: 1px solid var(--line);
      border-radius: 14px;
      padding: 10px 12px;
      box-shadow: none !important;
      background: #fff;
    }

    .navbar-toggler:active {
      transform: scale(.98);
    }

    .navbar-nav {
      align-items: center;
      gap: 8px;
    }

    .nav-link {
      color: var(--muted);
      font-weight: 700;
      padding: 10px 16px !important;
      border-radius: 999px;
      position: relative;
    }

    .nav-link:hover {
      color: var(--brand-dark);
      background: var(--brand-soft);
    }

    .nav-link.active {
      color: #fff !important;
      background: linear-gradient(135deg, var(--brand), var(--brand-dark));
      box-shadow: 0 12px 26px rgba(124, 58, 237, .24);
    }

    .nav-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 42px;
      padding: 10px 18px;
      border-radius: 999px;
      color: #fff;
      font-weight: 800;
      background: linear-gradient(135deg, var(--accent), var(--accent-deep));
      box-shadow: 0 14px 30px rgba(249, 115, 22, .22);
      margin-left: 8px;
    }

    .nav-cta:hover {
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 18px 38px rgba(249, 115, 22, .28);
    }

    .breadcrumb-strip {
      border-top: 1px solid rgba(92, 69, 128, .08);
      background: rgba(251, 248, 255, .72);
    }

    .breadcrumb-wrap {
      min-height: 44px;
      display: flex;
      align-items: center;
      gap: 10px;
      color: var(--weak);
      font-size: .92rem;
      overflow-x: auto;
      white-space: nowrap;
      scrollbar-width: none;
    }

    .breadcrumb-wrap::-webkit-scrollbar {
      display: none;
    }

    .breadcrumb-wrap a {
      color: var(--brand-dark);
      font-weight: 700;
    }

    .breadcrumb-wrap .current {
      color: var(--muted);
      font-weight: 700;
    }

    main {
      overflow: hidden;
    }

    .section {
      padding: 88px 0;
      position: relative;
    }

    .section-tight {
      padding: 64px 0;
    }

    .section-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 13px;
      border: 1px solid rgba(124, 58, 237, .16);
      border-radius: 999px;
      background: rgba(237, 233, 254, .75);
      color: var(--brand-dark);
      font-size: .88rem;
      font-weight: 850;
      margin-bottom: 14px;
    }

    .section-title {
      margin: 0;
      font-size: clamp(1.8rem, 3vw, 2.65rem);
      line-height: 1.18;
      letter-spacing: -.04em;
      font-weight: 950;
      color: var(--ink);
    }

    .section-desc {
      margin: 16px 0 0;
      max-width: 760px;
      color: var(--muted);
      font-size: 1.03rem;
    }

    .section-head {
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 28px;
      margin-bottom: 34px;
    }

    .section-head .section-desc {
      max-width: 520px;
    }

    .btn-brand,
    .btn-ghost,
    .btn-warm,
    .btn-dark-soft {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 9px;
      min-height: 48px;
      padding: 12px 21px;
      border-radius: 999px;
      font-weight: 900;
      border: 1px solid transparent;
      transition: transform .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
      cursor: pointer;
      line-height: 1.2;
    }

    .btn-brand {
      color: #fff;
      background: linear-gradient(135deg, var(--brand), var(--brand-dark));
      box-shadow: 0 18px 38px rgba(124, 58, 237, .27);
    }

    .btn-brand:hover {
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 24px 46px rgba(124, 58, 237, .34);
    }

    .btn-warm {
      color: #27170a;
      background: linear-gradient(135deg, #ffd166, var(--accent));
      box-shadow: 0 18px 38px rgba(255, 176, 32, .28);
    }

    .btn-warm:hover {
      color: #27170a;
      transform: translateY(-2px);
      box-shadow: 0 24px 46px rgba(255, 176, 32, .34);
    }

    .btn-ghost {
      color: var(--brand-dark);
      background: rgba(255, 255, 255, .86);
      border-color: rgba(124, 58, 237, .18);
    }

    .btn-ghost:hover {
      color: var(--brand-dark);
      background: var(--brand-soft);
      transform: translateY(-2px);
      border-color: rgba(124, 58, 237, .28);
    }

    .btn-dark-soft {
      color: #fff;
      background: rgba(255, 255, 255, .14);
      border-color: rgba(255, 255, 255, .2);
    }

    .btn-dark-soft:hover {
      color: #fff;
      background: rgba(255, 255, 255, .22);
      transform: translateY(-2px);
    }

    .hero {
      padding: 44px 0 74px;
    }

    .promo-stage {
      position: relative;
      min-height: 560px;
      border-radius: 38px;
      padding: clamp(28px, 5vw, 58px);
      color: #fff;
      overflow: hidden;
      background:
        radial-gradient(circle at 18% 24%, rgba(255, 255, 255, .25), transparent 20%),
        radial-gradient(circle at 88% 18%, rgba(255, 176, 32, .35), transparent 22%),
        linear-gradient(135deg, #2a174d 0%, #5b21b6 45%, #f97316 120%);
      box-shadow: var(--shadow-strong);
    }

    .promo-stage::before {
      content: "";
      position: absolute;
      inset: auto -12% -36% 44%;
      height: 460px;
      background:
        linear-gradient(90deg, rgba(255,255,255,.12), rgba(255,255,255,0)),
        repeating-linear-gradient(135deg, rgba(255,255,255,.18) 0 2px, transparent 2px 18px);
      transform: rotate(-8deg);
      border-radius: 50%;
      opacity: .75;
    }

    .promo-stage::after {
      content: "";
      position: absolute;
      width: 380px;
      height: 380px;
      right: -110px;
      top: -105px;
      border-radius: 50%;
      border: 1px solid rgba(255,255,255,.16);
      box-shadow: inset 0 0 0 36px rgba(255,255,255,.06);
    }

    .hero-grid {
      position: relative;
      z-index: 2;
      display: grid;
      grid-template-columns: 1.05fr .95fr;
      gap: 34px;
      align-items: center;
    }

    .hero-copy {
      max-width: 660px;
    }

    .burst {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 20px;
      padding: 10px 15px 10px 11px;
      border-radius: 999px;
      background: rgba(255,255,255,.16);
      border: 1px solid rgba(255,255,255,.22);
      backdrop-filter: blur(14px);
      font-weight: 900;
    }

    .burst i {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      display: inline-grid;
      place-items: center;
      background: var(--accent);
      color: #341b04;
      font-style: normal;
      box-shadow: 0 8px 20px rgba(255, 176, 32, .28);
    }

    h1 {
      margin: 0;
      font-size: clamp(2.35rem, 5.6vw, 5.2rem);
      line-height: .98;
      letter-spacing: -.075em;
      font-weight: 1000;
      max-width: 850px;
    }

    .hero-intro {
      margin: 24px 0 0;
      max-width: 720px;
      color: rgba(255, 255, 255, .86);
      font-size: clamp(1rem, 1.55vw, 1.16rem);
      line-height: 1.9;
    }

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

    .hero-points {
      margin: 30px 0 0;
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      padding: 0;
      list-style: none;
    }

    .hero-points li {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 10px 13px;
      border-radius: 999px;
      background: rgba(255,255,255,.12);
      border: 1px solid rgba(255,255,255,.18);
      color: rgba(255,255,255,.9);
      font-weight: 800;
      font-size: .93rem;
    }

    .coupon-wall {
      display: grid;
      grid-template-columns: 1fr;
      gap: 14px;
      transform: rotate(-1.5deg);
    }

    .coupon {
      position: relative;
      border-radius: 24px;
      padding: 22px;
      overflow: hidden;
      min-height: 124px;
      background: rgba(255, 255, 255, .94);
      color: var(--ink);
      box-shadow: 0 18px 50px rgba(20, 12, 41, .22);
      border: 1px solid rgba(255, 255, 255, .45);
    }

    .coupon::before,
    .coupon::after {
      content: "";
      position: absolute;
      top: 50%;
      width: 22px;
      height: 22px;
      border-radius: 50%;
      background: #5b21b6;
      transform: translateY(-50%);
    }

    .coupon::before {
      left: -11px;
    }

    .coupon::after {
      right: -11px;
    }

    .coupon.featured {
      background: linear-gradient(135deg, #fff7df, #fff);
      border: 2px solid rgba(255, 176, 32, .75);
      transform: scale(1.04);
      z-index: 3;
    }

    .coupon-label {
      display: inline-flex;
      padding: 5px 10px;
      border-radius: 999px;
      background: var(--brand-soft);
      color: var(--brand-dark);
      font-size: .8rem;
      font-weight: 900;
    }

    .coupon h3 {
      margin: 10px 0 4px;
      font-size: 1.28rem;
      font-weight: 950;
    }

    .coupon p {
      margin: 0;
      color: var(--muted);
      font-size: .94rem;
    }

    .coupon-value {
      position: absolute;
      right: 22px;
      top: 22px;
      font-size: 1.9rem;
      line-height: 1;
      font-weight: 1000;
      color: var(--accent-deep);
      letter-spacing: -.05em;
    }

    .sticker {
      position: absolute;
      right: clamp(20px, 5vw, 70px);
      bottom: 32px;
      z-index: 4;
      width: 118px;
      height: 118px;
      border-radius: 34px;
      display: grid;
      place-items: center;
      text-align: center;
      font-weight: 1000;
      line-height: 1.1;
      color: #351b00;
      background: linear-gradient(135deg, #ffe08a, #ffb020);
      transform: rotate(9deg);
      box-shadow: 0 22px 48px rgba(255, 176, 32, .34);
      border: 5px solid rgba(255,255,255,.45);
    }

    .panel-card {
      background: rgba(255,255,255,.86);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
      transition: transform .22s var(--ease), box-shadow .22s var(--ease), border-color .22s var(--ease);
    }

    .panel-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow);
      border-color: rgba(124, 58, 237, .22);
    }

    .compare-wrap {
      border-radius: 28px;
      background: var(--panel);
      border: 1px solid var(--line);
      box-shadow: var(--shadow);
      overflow: hidden;
    }

    .compare-toolbar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      padding: 20px 22px;
      background: linear-gradient(135deg, #fbf8ff, #fff);
      border-bottom: 1px solid var(--line);
    }

    .compare-toolbar strong {
      font-size: 1.05rem;
      font-weight: 950;
    }

    .compare-table {
      width: 100%;
      margin: 0;
      border-collapse: separate;
      border-spacing: 0;
    }

    .compare-table th,
    .compare-table td {
      padding: 18px 20px;
      vertical-align: middle;
      border-bottom: 1px solid var(--line);
    }

    .compare-table th {
      color: var(--ink);
      font-size: .95rem;
      background: rgba(237, 233, 254, .38);
      font-weight: 950;
    }

    .compare-table td {
      color: var(--muted);
      font-weight: 650;
    }

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

    .check {
      color: var(--success);
      font-weight: 1000;
    }

    .limited {
      color: var(--accent-deep);
      font-weight: 900;
    }

    .badge-soft {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 7px 11px;
      border-radius: 999px;
      background: var(--brand-soft);
      color: var(--brand-dark);
      font-size: .82rem;
      font-weight: 900;
      white-space: nowrap;
    }

    .plans-grid {
      display: grid;
      grid-template-columns: .9fr 1.18fr .9fr;
      gap: 20px;
      align-items: stretch;
    }

    .plan-card {
      position: relative;
      padding: 28px;
      min-height: 390px;
      display: flex;
      flex-direction: column;
      background:
        linear-gradient(180deg, rgba(255,255,255,.96), rgba(251,248,255,.96));
      border: 1px solid var(--line);
      border-radius: 30px;
      box-shadow: var(--shadow-sm);
      overflow: hidden;
    }

    .plan-card.popular {
      color: #fff;
      background:
        radial-gradient(circle at 85% 0%, rgba(255,176,32,.35), transparent 30%),
        linear-gradient(150deg, #3b1c75, #6d28d9 62%, #f97316 140%);
      transform: translateY(-12px);
      box-shadow: var(--shadow-strong);
      border-color: rgba(255,255,255,.18);
    }

    .plan-card h3 {
      margin: 16px 0 8px;
      font-size: 1.45rem;
      font-weight: 1000;
    }

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

    .plan-card.popular p,
    .plan-card.popular .plan-list li {
      color: rgba(255,255,255,.84);
    }

    .price {
      margin-top: 22px;
      font-size: 2.7rem;
      line-height: 1;
      letter-spacing: -.06em;
      font-weight: 1000;
    }

    .price small {
      font-size: .95rem;
      letter-spacing: 0;
      color: inherit;
      opacity: .75;
      font-weight: 800;
    }

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

    .plan-list li {
      display: flex;
      gap: 10px;
      color: var(--muted);
      font-weight: 700;
    }

    .plan-list li::before {
      content: "✓";
      flex: 0 0 22px;
      width: 22px;
      height: 22px;
      display: inline-grid;
      place-items: center;
      border-radius: 50%;
      background: rgba(22, 163, 74, .12);
      color: var(--success);
      font-size: .82rem;
      font-weight: 1000;
      margin-top: 2px;
    }

    .plan-card.popular .plan-list li::before {
      background: rgba(255,255,255,.2);
      color: #fff;
    }

    .plan-card .btn-brand,
    .plan-card .btn-ghost,
    .plan-card .btn-warm {
      margin-top: auto;
      width: 100%;
    }

    .news-layout {
      display: grid;
      grid-template-columns: minmax(0, 1.45fr) minmax(280px, .55fr);
      gap: 24px;
      align-items: start;
    }

    .news-list {
      background: var(--panel);
      border: 1px solid var(--line);
      border-radius: 28px;
      box-shadow: var(--shadow-sm);
      overflow: hidden;
    }

    .news-item {
      display: grid;
      grid-template-columns: 112px minmax(0, 1fr) auto;
      gap: 18px;
      align-items: center;
      padding: 22px;
      border-bottom: 1px solid var(--line);
    }

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

    .news-date {
      display: grid;
      place-items: center;
      min-height: 72px;
      border-radius: 20px;
      background: var(--panel-2);
      color: var(--brand-dark);
      font-weight: 1000;
      line-height: 1.2;
      text-align: center;
    }

    .news-date small {
      display: block;
      color: var(--weak);
      font-size: .76rem;
      font-weight: 850;
      margin-top: 3px;
    }

    .news-title {
      margin: 0;
      font-size: 1.08rem;
      font-weight: 950;
      line-height: 1.4;
    }

    .news-title a:hover {
      color: var(--brand-dark);
    }

    .news-summary {
      margin: 6px 0 0;
      color: var(--muted);
      font-size: .95rem;
      line-height: 1.7;
    }

    .news-arrow {
      width: 42px;
      height: 42px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      background: var(--brand-soft);
      color: var(--brand-dark);
      font-weight: 1000;
    }

    .news-item:hover .news-arrow {
      background: var(--brand);
      color: #fff;
      transform: translateX(2px);
    }

    .side-recommend {
      padding: 24px;
      border-radius: 28px;
      background:
        radial-gradient(circle at top right, rgba(255,176,32,.18), transparent 36%),
        #fff;
      border: 1px solid var(--line);
      box-shadow: var(--shadow-sm);
      position: sticky;
      top: 110px;
    }

    .side-recommend h3 {
      margin: 0 0 12px;
      font-size: 1.25rem;
      font-weight: 1000;
    }

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

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

    .mini-stack li {
      padding: 14px;
      border-radius: 18px;
      background: var(--panel-2);
      border: 1px solid rgba(124, 58, 237, .1);
      font-weight: 800;
      color: var(--muted);
    }

    .progress-section {
      background: linear-gradient(180deg, rgba(237,233,254,.42), rgba(255,255,255,.2));
    }

    .progress-board {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
      align-items: stretch;
    }

    .task-card {
      padding: 28px;
      border-radius: 30px;
      background: #fff;
      border: 1px solid var(--line);
      box-shadow: var(--shadow-sm);
    }

    .task-card h3 {
      margin: 0 0 14px;
      font-weight: 1000;
      font-size: 1.32rem;
    }

    .progress-line {
      height: 14px;
      border-radius: 999px;
      background: #eee8fb;
      overflow: hidden;
      margin: 20px 0;
    }

    .progress-line span {
      display: block;
      width: 72%;
      height: 100%;
      border-radius: inherit;
      background: linear-gradient(90deg, var(--brand), var(--accent));
      box-shadow: 0 8px 20px rgba(124, 58, 237, .25);
    }

    .task-list {
      list-style: none;
      padding: 0;
      margin: 0;
      display: grid;
      gap: 14px;
    }

    .task-list li {
      display: flex;
      align-items: start;
      gap: 12px;
      color: var(--muted);
      font-weight: 700;
    }

    .task-list b {
      flex: 0 0 30px;
      height: 30px;
      display: inline-grid;
      place-items: center;
      border-radius: 11px;
      color: #fff;
      background: linear-gradient(135deg, var(--brand), var(--brand-dark));
      font-size: .86rem;
    }

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

    .step-card {
      padding: 24px;
      border-radius: 26px;
      background: #fff;
      border: 1px solid var(--line);
      box-shadow: var(--shadow-sm);
    }

    .step-num {
      width: 44px;
      height: 44px;
      display: grid;
      place-items: center;
      border-radius: 15px;
      background: var(--brand-soft);
      color: var(--brand-dark);
      font-weight: 1000;
      margin-bottom: 15px;
    }

    .step-card h3 {
      margin: 0 0 8px;
      font-size: 1.16rem;
      font-weight: 1000;
    }

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

    .open-section {
      padding: 78px 0;
    }

    .open-panel {
      position: relative;
      overflow: hidden;
      border-radius: 36px;
      color: #fff;
      padding: clamp(28px, 5vw, 54px);
      background:
        radial-gradient(circle at 20% 0%, rgba(255,255,255,.22), transparent 24%),
        radial-gradient(circle at 86% 88%, rgba(255,176,32,.28), transparent 30%),
        linear-gradient(135deg, #16112a, #3b1c75 52%, #7c3aed);
      box-shadow: var(--shadow-strong);
    }

    .open-panel::before {
      content: "";
      position: absolute;
      inset: 18px;
      border-radius: 28px;
      border: 1px solid rgba(255,255,255,.12);
      pointer-events: none;
    }

    .open-grid {
      position: relative;
      z-index: 2;
      display: grid;
      grid-template-columns: 1fr 380px;
      gap: 34px;
      align-items: center;
    }

    .open-panel h2 {
      margin: 0;
      font-size: clamp(1.9rem, 4vw, 3.45rem);
      line-height: 1.12;
      letter-spacing: -.055em;
      font-weight: 1000;
    }

    .open-panel p {
      margin: 18px 0 0;
      color: rgba(255,255,255,.82);
      max-width: 690px;
    }

    .open-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 26px;
    }

    .open-form {
      padding: 22px;
      border-radius: 26px;
      background: rgba(255,255,255,.1);
      border: 1px solid rgba(255,255,255,.16);
      backdrop-filter: blur(16px);
    }

    .form-label {
      color: rgba(255,255,255,.9);
      font-weight: 850;
      margin-bottom: 8px;
    }

    .form-control,
    .form-select {
      min-height: 48px;
      border-radius: 16px;
      border: 1px solid rgba(255,255,255,.18);
      background: rgba(255,255,255,.92);
      color: var(--ink);
      box-shadow: none !important;
    }

    .form-control:focus,
    .form-select:focus {
      border-color: var(--accent);
      box-shadow: 0 0 0 .25rem rgba(255,176,32,.18) !important;
    }

    .form-hint {
      margin: 12px 0 0;
      color: rgba(255,255,255,.66);
      font-size: .88rem;
    }

    .accordion {
      display: grid;
      gap: 14px;
    }

    .accordion-item {
      border: 1px solid var(--line) !important;
      border-radius: 22px !important;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      background: #fff;
    }

    .accordion-button {
      padding: 20px 22px;
      font-weight: 950;
      color: var(--ink);
      background: #fff;
      box-shadow: none !important;
      line-height: 1.45;
    }

    .accordion-button:not(.collapsed) {
      color: var(--brand-dark);
      background: var(--panel-2);
    }

    .accordion-button::after {
      background-size: 1rem;
      filter: hue-rotate(230deg) saturate(1.5);
    }

    .accordion-body {
      padding: 0 22px 22px;
      color: var(--muted);
      line-height: 1.85;
    }

    .site-footer {
      color: rgba(255,255,255,.78);
      background:
        radial-gradient(circle at 10% 0%, rgba(124,58,237,.4), transparent 24%),
        linear-gradient(180deg, #171126, #0f0a18);
      padding: 56px 0 28px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.3fr .7fr .7fr;
      gap: 34px;
      padding-bottom: 36px;
      border-bottom: 1px solid rgba(255,255,255,.1);
    }

    .footer-brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      color: #fff;
      font-size: 1.16rem;
      font-weight: 1000;
      margin-bottom: 14px;
    }

    .footer-text {
      max-width: 560px;
      margin: 0;
      color: rgba(255,255,255,.68);
    }

    .footer-title {
      color: #fff;
      font-weight: 950;
      margin: 0 0 14px;
      font-size: 1rem;
    }

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

    .footer-links a {
      color: rgba(255,255,255,.68);
      font-weight: 700;
    }

    .footer-links a:hover {
      color: #fff;
      padding-left: 3px;
    }

    .footer-bottom {
      display: flex;
      justify-content: space-between;
      gap: 18px;
      align-items: center;
      padding-top: 22px;
      font-size: .92rem;
      color: rgba(255,255,255,.55);
    }

    .fixed-cta {
      position: fixed;
      left: 50%;
      bottom: 18px;
      transform: translateX(-50%);
      z-index: 900;
      display: none;
      align-items: center;
      gap: 12px;
      width: min(520px, calc(100% - 28px));
      padding: 10px 12px 10px 16px;
      border-radius: 999px;
      background: rgba(22, 17, 42, .88);
      border: 1px solid rgba(255,255,255,.14);
      box-shadow: 0 18px 50px rgba(15, 10, 24, .34);
      backdrop-filter: blur(18px);
      color: #fff;
    }

    .fixed-cta span {
      flex: 1;
      font-weight: 850;
      font-size: .92rem;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .fixed-cta a {
      flex: 0 0 auto;
      min-height: 38px;
      padding: 9px 14px;
      font-size: .88rem;
    }

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

      .hero-grid,
      .open-grid,
      .progress-board {
        grid-template-columns: 1fr;
      }

      .coupon-wall {
        grid-template-columns: repeat(3, 1fr);
        transform: none;
      }

      .coupon {
        min-height: 155px;
      }

      .coupon-value {
        position: static;
        margin-top: 12px;
        display: block;
      }

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

      .plan-card.popular {
        transform: none;
      }

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

      .side-recommend {
        position: static;
      }

      .open-grid {
        gap: 26px;
      }
    }

    @media (max-width: 768px) {
      :root {
        --nav-height: 66px;
      }

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

      .navbar-collapse {
        padding: 14px 0 18px;
      }

      .navbar-nav {
        align-items: stretch;
        gap: 8px;
      }

      .nav-link {
        border-radius: 16px;
      }

      .nav-cta {
        margin-left: 0;
        width: 100%;
      }

      .breadcrumb-wrap {
        min-height: 42px;
        font-size: .86rem;
      }

      .hero {
        padding-top: 26px;
      }

      .promo-stage {
        min-height: auto;
        border-radius: 28px;
        padding: 26px;
      }

      h1 {
        letter-spacing: -.055em;
      }

      .hero-actions .btn-brand,
      .hero-actions .btn-warm,
      .hero-actions .btn-ghost {
        width: 100%;
      }

      .coupon-wall {
        grid-template-columns: 1fr;
        margin-top: 12px;
      }

      .coupon.featured {
        transform: none;
      }

      .sticker {
        display: none;
      }

      .section-head {
        display: block;
      }

      .compare-toolbar {
        align-items: flex-start;
        flex-direction: column;
      }

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

      .compare-table {
        min-width: 720px;
      }

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

      .news-date {
        width: 112px;
      }

      .news-arrow {
        display: none;
      }

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

      .open-form {
        padding: 18px;
      }

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

      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }

      .fixed-cta {
        display: flex;
      }
    }

    @media (max-width: 520px) {
      body {
        font-size: 15px;
      }

      .section {
        padding: 58px 0;
      }

      .section-tight {
        padding: 48px 0;
      }

      .logo-mark {
        width: 38px;
        height: 38px;
        border-radius: 13px;
      }

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

      .promo-stage {
        padding: 22px;
      }

      .burst {
        font-size: .85rem;
      }

      .hero-points li {
        width: 100%;
        justify-content: center;
      }

      .plan-card,
      .task-card,
      .step-card,
      .side-recommend {
        padding: 22px;
        border-radius: 24px;
      }

      .open-panel {
        border-radius: 28px;
        padding: 24px;
      }

      .open-actions .btn-warm,
      .open-actions .btn-dark-soft {
        width: 100%;
      }
    }

/* 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}