/* roulang page: index */
:root {
      --bg: #0b0d16;
      --bg-soft: #111421;
      --surface: #ffffff;
      --surface-2: #f7f4ff;
      --surface-3: #fbfbff;
      --text: #171427;
      --muted: #706b83;
      --muted-2: #a9a4b8;
      --primary: #8b5cf6;
      --primary-2: #ec4899;
      --primary-3: #22d3ee;
      --accent: #ffd166;
      --success: #26c281;
      --danger: #ff6b6b;
      --border: rgba(28, 22, 48, .12);
      --border-dark: rgba(255, 255, 255, .14);
      --shadow-sm: 0 10px 24px rgba(34, 23, 77, .08);
      --shadow-md: 0 18px 50px rgba(38, 28, 94, .14);
      --shadow-lg: 0 30px 90px rgba(11, 13, 22, .35);
      --radius-sm: 14px;
      --radius-md: 22px;
      --radius-lg: 34px;
      --radius-xl: 44px;
      --container: 1180px;
      --nav-h: 78px;
      --transition: all .24s ease;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
      text-size-adjust: 100%;
    }

    body {
      margin: 0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
      color: var(--text);
      background:
        radial-gradient(circle at 8% 2%, rgba(139, 92, 246, .13), transparent 34rem),
        radial-gradient(circle at 92% 10%, rgba(34, 211, 238, .11), transparent 30rem),
        linear-gradient(180deg, #fffbff 0%, #f7f4ff 38%, #ffffff 100%);
      line-height: 1.72;
      overflow-x: hidden;
    }

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

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

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

    button,
    input,
    textarea {
      font: inherit;
    }

    button:focus-visible,
    a:focus-visible,
    input:focus-visible,
    textarea:focus-visible {
      outline: 3px solid rgba(139, 92, 246, .28);
      outline-offset: 3px;
      border-radius: 12px;
    }

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

    .section {
      padding: 84px 0;
      position: relative;
    }

    .section-tight {
      padding: 62px 0;
    }

    .section-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 12px;
      border-radius: 999px;
      background: rgba(139, 92, 246, .1);
      color: #6d3ee4;
      font-weight: 800;
      font-size: 13px;
      letter-spacing: .04em;
      margin-bottom: 16px;
    }

    .section-title {
      font-size: clamp(30px, 4vw, 48px);
      line-height: 1.18;
      font-weight: 950;
      letter-spacing: -.04em;
      margin: 0;
      color: var(--text);
    }

    .section-lead {
      max-width: 760px;
      color: var(--muted);
      font-size: 17px;
      margin: 18px 0 0;
    }

    .text-gradient {
      background: linear-gradient(120deg, #fff 0%, #ffd1f1 44%, #b7f4ff 100%);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      height: var(--nav-h);
      display: flex;
      align-items: center;
      background: rgba(255, 255, 255, .76);
      backdrop-filter: blur(20px);
      border-bottom: 1px solid rgba(28, 22, 48, .08);
    }

    .navbar-shell {
      width: min(var(--container), calc(100% - 40px));
      margin-inline: auto;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
    }

    .brand-logo {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      min-width: max-content;
      color: var(--text);
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      border-radius: 15px;
      display: grid;
      place-items: center;
      color: #fff;
      background:
        radial-gradient(circle at 28% 20%, rgba(255, 255, 255, .9), transparent 18%),
        linear-gradient(135deg, var(--primary), var(--primary-2) 58%, var(--primary-3));
      box-shadow: 0 14px 32px rgba(139, 92, 246, .28);
      font-weight: 950;
      letter-spacing: -.04em;
    }

    .brand-text {
      font-size: 19px;
      font-weight: 950;
      letter-spacing: -.03em;
    }

    .nav-center {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 6px;
      border: 1px solid rgba(28, 22, 48, .08);
      border-radius: 999px;
      background: rgba(255, 255, 255, .6);
      box-shadow: var(--shadow-sm);
    }

    .nav-link-custom {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      padding: 10px 16px;
      border-radius: 999px;
      color: #5d5870;
      font-weight: 800;
      font-size: 14px;
    }

    .nav-link-custom:hover {
      background: rgba(139, 92, 246, .08);
      color: #6d3ee4;
      transform: translateY(-1px);
    }

    .nav-link-custom.active {
      background: #161324;
      color: #fff;
      box-shadow: 0 12px 28px rgba(22, 19, 36, .18);
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .command-search {
      width: 260px;
      height: 44px;
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 0 12px;
      border: 1px solid rgba(28, 22, 48, .1);
      border-radius: 999px;
      background: rgba(255, 255, 255, .82);
      color: var(--muted);
      box-shadow: 0 10px 22px rgba(28, 22, 48, .05);
      transition: var(--transition);
    }

    .command-search:hover,
    .command-search:focus-within {
      border-color: rgba(139, 92, 246, .35);
      box-shadow: 0 12px 30px rgba(139, 92, 246, .12);
      transform: translateY(-1px);
    }

    .command-search input {
      width: 100%;
      border: 0;
      outline: 0;
      background: transparent;
      color: var(--text);
      font-size: 14px;
    }

    .command-search kbd {
      border: 0;
      border-radius: 8px;
      padding: 4px 7px;
      background: #f0edf8;
      color: #6b647e;
      font-size: 12px;
      box-shadow: none;
    }

    .quick-link {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      border: 1px solid rgba(28, 22, 48, .1);
      background: rgba(255, 255, 255, .8);
      color: #5d5870;
    }

    .quick-link:hover {
      color: var(--primary);
      border-color: rgba(139, 92, 246, .3);
      transform: translateY(-1px);
    }

    .btn-brand {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 9px;
      min-height: 48px;
      padding: 13px 18px;
      border: 0;
      border-radius: 999px;
      background: linear-gradient(135deg, var(--primary), var(--primary-2));
      color: #fff;
      font-weight: 900;
      box-shadow: 0 16px 34px rgba(139, 92, 246, .26);
      transition: var(--transition);
      cursor: pointer;
      white-space: nowrap;
    }

    .btn-brand:hover {
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 22px 48px rgba(139, 92, 246, .34);
    }

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

    .btn-ghost {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 9px;
      min-height: 48px;
      padding: 12px 18px;
      border-radius: 999px;
      border: 1px solid rgba(255, 255, 255, .18);
      background: rgba(255, 255, 255, .08);
      color: #fff;
      font-weight: 900;
      backdrop-filter: blur(10px);
      transition: var(--transition);
      white-space: nowrap;
    }

    .btn-ghost:hover {
      color: #fff;
      background: rgba(255, 255, 255, .15);
      border-color: rgba(255, 255, 255, .32);
      transform: translateY(-2px);
    }

    .navbar-toggler-custom {
      display: none;
      width: 44px;
      height: 44px;
      border-radius: 14px;
      border: 1px solid rgba(28, 22, 48, .1);
      background: #fff;
      color: var(--text);
    }

    .mobile-panel {
      display: none;
      width: min(var(--container), calc(100% - 40px));
      margin: 10px auto 0;
      padding: 14px;
      border: 1px solid rgba(28, 22, 48, .1);
      border-radius: 22px;
      background: rgba(255, 255, 255, .94);
      box-shadow: var(--shadow-md);
    }

    .hero {
      min-height: calc(100vh - var(--nav-h));
      padding: 44px 0 78px;
      display: flex;
      align-items: center;
      background:
        linear-gradient(180deg, rgba(11, 13, 22, .1), rgba(11, 13, 22, 0)),
        radial-gradient(circle at 50% 0%, rgba(236, 72, 153, .22), transparent 32rem);
    }

    .hero-stage {
      position: relative;
      overflow: hidden;
      min-height: 650px;
      border-radius: var(--radius-xl);
      background:
        radial-gradient(circle at 18% 16%, rgba(255, 209, 102, .2), transparent 18rem),
        radial-gradient(circle at 80% 24%, rgba(34, 211, 238, .18), transparent 20rem),
        linear-gradient(135deg, #10111d 0%, #161229 44%, #070914 100%);
      box-shadow: var(--shadow-lg);
      border: 1px solid rgba(255, 255, 255, .13);
      isolation: isolate;
    }

    .hero-stage::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(90deg, rgba(11, 13, 22, .96) 0%, rgba(11, 13, 22, .72) 42%, rgba(11, 13, 22, .16) 100%),
        repeating-linear-gradient(90deg, rgba(255, 255, 255, .045) 0 1px, transparent 1px 78px);
      z-index: -1;
    }

    .hero-stage::after {
      content: "";
      position: absolute;
      inset: auto -10% -28% 36%;
      height: 360px;
      background: radial-gradient(closest-side, rgba(139, 92, 246, .55), transparent 72%);
      filter: blur(12px);
      z-index: -1;
    }

    .hero-inner {
      min-height: 650px;
      display: grid;
      grid-template-columns: 1fr 440px;
      gap: 34px;
      align-items: stretch;
      padding: clamp(26px, 5vw, 56px);
      position: relative;
    }

    .hero-copy {
      display: flex;
      flex-direction: column;
      justify-content: center;
      max-width: 720px;
      color: #fff;
    }

    .hero-brand {
      display: inline-flex;
      width: fit-content;
      align-items: center;
      gap: 9px;
      padding: 8px 13px;
      border-radius: 999px;
      background: rgba(255, 255, 255, .11);
      color: #f3efff;
      border: 1px solid rgba(255, 255, 255, .15);
      font-weight: 900;
      font-size: 14px;
      margin-bottom: 22px;
    }

    .hero h1 {
      max-width: 780px;
      margin: 0;
      font-size: clamp(40px, 6.4vw, 76px);
      line-height: 1.02;
      font-weight: 1000;
      letter-spacing: -.07em;
      color: #fff;
    }

    .hero-intro {
      max-width: 640px;
      margin: 24px 0 0;
      color: rgba(255, 255, 255, .78);
      font-size: clamp(16px, 1.6vw, 19px);
      line-height: 1.86;
    }

    .hero-actions {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 14px;
      margin-top: 32px;
    }

    .hero-data-row {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 12px;
      margin-top: 34px;
      max-width: 650px;
    }

    .hero-data {
      padding: 16px;
      border-radius: 22px;
      background: rgba(255, 255, 255, .08);
      border: 1px solid rgba(255, 255, 255, .12);
      backdrop-filter: blur(12px);
    }

    .hero-data strong {
      display: block;
      color: #fff;
      font-size: 24px;
      line-height: 1.1;
      font-weight: 1000;
    }

    .hero-data span {
      display: block;
      margin-top: 6px;
      color: rgba(255, 255, 255, .65);
      font-size: 13px;
    }

    .poster-wrap {
      position: relative;
      display: flex;
      align-items: center;
      justify-content: center;
      min-height: 100%;
      perspective: 1200px;
    }

    .poster-card {
      position: relative;
      width: min(390px, 100%);
      min-height: 540px;
      border-radius: 38px;
      overflow: hidden;
      background:
        radial-gradient(circle at 50% 20%, rgba(255, 255, 255, .75), transparent 4rem),
        radial-gradient(circle at 28% 26%, rgba(255, 209, 102, .32), transparent 8rem),
        radial-gradient(circle at 70% 42%, rgba(236, 72, 153, .45), transparent 11rem),
        linear-gradient(155deg, #38236e 0%, #160f30 42%, #050611 100%);
      border: 1px solid rgba(255, 255, 255, .16);
      box-shadow: 0 36px 90px rgba(0, 0, 0, .42);
      transform: rotateY(-8deg) rotateX(3deg);
    }

    .poster-card::before {
      content: "";
      position: absolute;
      inset: 16px;
      border-radius: 28px;
      border: 1px solid rgba(255, 255, 255, .16);
      background:
        linear-gradient(180deg, rgba(255, 255, 255, .06), transparent 46%),
        repeating-linear-gradient(135deg, rgba(255, 255, 255, .05) 0 1px, transparent 1px 18px);
    }

    .poster-glow {
      position: absolute;
      width: 220px;
      height: 220px;
      border-radius: 50%;
      right: 30px;
      top: 86px;
      background: radial-gradient(circle, rgba(34, 211, 238, .5), transparent 66%);
      filter: blur(7px);
    }

    .poster-persona {
      position: absolute;
      left: 50%;
      bottom: 96px;
      width: 210px;
      height: 300px;
      transform: translateX(-50%);
      border-radius: 120px 120px 42px 42px;
      background:
        radial-gradient(circle at 50% 18%, #fff2d8 0 16%, transparent 17%),
        radial-gradient(circle at 41% 15%, #1b1532 0 3%, transparent 4%),
        radial-gradient(circle at 59% 15%, #1b1532 0 3%, transparent 4%),
        linear-gradient(160deg, #ffd166 0 24%, #ec4899 24% 48%, #8b5cf6 48% 100%);
      box-shadow: 0 28px 70px rgba(0, 0, 0, .28);
      opacity: .92;
    }

    .poster-title {
      position: absolute;
      left: 28px;
      right: 28px;
      bottom: 28px;
      color: #fff;
    }

    .poster-title .badge-hot {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      padding: 8px 12px;
      border-radius: 999px;
      background: rgba(255, 209, 102, .18);
      border: 1px solid rgba(255, 209, 102, .38);
      color: #ffe6a2;
      font-size: 13px;
      font-weight: 900;
      margin-bottom: 14px;
    }

    .poster-title h2 {
      margin: 0;
      font-size: 34px;
      line-height: 1.08;
      font-weight: 1000;
      letter-spacing: -.04em;
    }

    .poster-title p {
      margin: 10px 0 0;
      color: rgba(255, 255, 255, .72);
      font-size: 14px;
    }

    .float-badge {
      position: absolute;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 12px 14px;
      border-radius: 999px;
      background: rgba(255, 255, 255, .12);
      color: #fff;
      border: 1px solid rgba(255, 255, 255, .16);
      backdrop-filter: blur(12px);
      box-shadow: 0 18px 40px rgba(0, 0, 0, .2);
      font-weight: 900;
      font-size: 13px;
    }

    .float-badge.one {
      top: 92px;
      left: -10px;
    }

    .float-badge.two {
      right: -10px;
      bottom: 136px;
    }

    .metric-board {
      margin-top: -34px;
      position: relative;
      z-index: 2;
    }

    .metric-shell {
      display: grid;
      grid-template-columns: 1.15fr .85fr;
      gap: 18px;
      padding: 20px;
      border-radius: var(--radius-lg);
      background: rgba(255, 255, 255, .82);
      border: 1px solid rgba(28, 22, 48, .08);
      box-shadow: var(--shadow-md);
      backdrop-filter: blur(16px);
    }

    .metric-main {
      padding: 26px;
      border-radius: 28px;
      background:
        radial-gradient(circle at 92% 20%, rgba(139, 92, 246, .13), transparent 16rem),
        linear-gradient(180deg, #fff, #faf8ff);
      border: 1px solid rgba(28, 22, 48, .08);
    }

    .metric-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 14px;
      margin-top: 22px;
    }

    .metric-card {
      padding: 18px;
      border-radius: 24px;
      background: #fff;
      border: 1px solid rgba(28, 22, 48, .08);
      box-shadow: 0 12px 28px rgba(28, 22, 48, .06);
      transition: var(--transition);
    }

    .metric-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }

    .metric-value {
      display: flex;
      align-items: baseline;
      gap: 5px;
      color: var(--text);
      font-size: 34px;
      font-weight: 1000;
      letter-spacing: -.04em;
      line-height: 1;
    }

    .metric-value small {
      font-size: 15px;
      color: var(--muted);
      font-weight: 800;
    }

    .metric-card p {
      margin: 10px 0 0;
      color: var(--muted);
      font-size: 14px;
    }

    .metric-side {
      padding: 24px;
      border-radius: 28px;
      color: #fff;
      background:
        radial-gradient(circle at 18% 18%, rgba(255, 209, 102, .2), transparent 13rem),
        linear-gradient(145deg, #181329, #2a1745);
      border: 1px solid rgba(255, 255, 255, .12);
      overflow: hidden;
      position: relative;
    }

    .metric-side::after {
      content: "";
      position: absolute;
      width: 220px;
      height: 220px;
      right: -90px;
      bottom: -90px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(236, 72, 153, .5), transparent 70%);
    }

    .pulse-list {
      display: grid;
      gap: 12px;
      margin-top: 22px;
      position: relative;
      z-index: 1;
    }

    .pulse-item {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 13px;
      border-radius: 18px;
      background: rgba(255, 255, 255, .08);
      border: 1px solid rgba(255, 255, 255, .1);
    }

    .pulse-dot {
      width: 11px;
      height: 11px;
      border-radius: 50%;
      background: var(--success);
      box-shadow: 0 0 0 7px rgba(38, 194, 129, .12);
      flex: 0 0 auto;
    }

    .feature-chapter {
      background: linear-gradient(180deg, rgba(255,255,255,0), rgba(247,244,255,.82));
    }

    .feature-layout {
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      gap: 26px;
      align-items: start;
      margin-top: 34px;
    }

    .feature-sticky {
      position: sticky;
      top: calc(var(--nav-h) + 22px);
      padding: 30px;
      border-radius: var(--radius-lg);
      background:
        radial-gradient(circle at 20% 10%, rgba(255, 209, 102, .16), transparent 13rem),
        linear-gradient(145deg, #fff, #f8f4ff);
      border: 1px solid rgba(28, 22, 48, .08);
      box-shadow: var(--shadow-sm);
    }

    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 24px;
    }

    .tag {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      padding: 9px 12px;
      border-radius: 999px;
      background: #fff;
      border: 1px solid rgba(28, 22, 48, .09);
      color: #5d5870;
      font-weight: 800;
      font-size: 13px;
      box-shadow: 0 8px 20px rgba(28, 22, 48, .04);
    }

    .feature-list {
      display: grid;
      gap: 16px;
    }

    .feature-card {
      display: grid;
      grid-template-columns: 58px 1fr;
      gap: 18px;
      padding: 24px;
      border-radius: 28px;
      background: rgba(255, 255, 255, .88);
      border: 1px solid rgba(28, 22, 48, .08);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .feature-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: rgba(139, 92, 246, .22);
    }

    .icon-box {
      width: 58px;
      height: 58px;
      border-radius: 20px;
      display: grid;
      place-items: center;
      color: #fff;
      background: linear-gradient(135deg, var(--primary), var(--primary-2));
      box-shadow: 0 14px 28px rgba(139, 92, 246, .22);
      font-size: 22px;
    }

    .feature-card h3,
    .guide-card h3,
    .compare-card h3,
    .testimonial-card h3,
    .security-card h3 {
      margin: 0;
      font-size: 20px;
      font-weight: 950;
      letter-spacing: -.02em;
    }

    .feature-card p,
    .guide-card p,
    .compare-card p,
    .testimonial-card p,
    .security-card p {
      margin: 9px 0 0;
      color: var(--muted);
      font-size: 15px;
    }

    .category-strip {
      overflow: hidden;
      padding: 46px 0;
      background: #111421;
      color: #fff;
    }

    .category-track {
      display: flex;
      gap: 14px;
      margin-top: 28px;
      overflow-x: auto;
      padding-bottom: 8px;
      scrollbar-width: thin;
      scrollbar-color: rgba(255, 255, 255, .28) transparent;
    }

    .category-card {
      min-width: 255px;
      padding: 22px;
      border-radius: 26px;
      background:
        radial-gradient(circle at 80% 12%, rgba(236, 72, 153, .18), transparent 10rem),
        rgba(255, 255, 255, .07);
      border: 1px solid rgba(255, 255, 255, .12);
      transition: var(--transition);
    }

    .category-card:hover {
      color: #fff;
      transform: translateY(-5px);
      background: rgba(255, 255, 255, .1);
      border-color: rgba(255, 255, 255, .24);
    }

    .category-card span {
      display: inline-flex;
      width: 42px;
      height: 42px;
      border-radius: 16px;
      align-items: center;
      justify-content: center;
      background: rgba(255, 255, 255, .12);
      color: #ffd166;
      margin-bottom: 18px;
    }

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

    .category-card p {
      color: rgba(255, 255, 255, .64);
      margin: 8px 0 0;
      font-size: 14px;
    }

    .guide-grid {
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 22px;
      margin-top: 34px;
    }

    .guide-card {
      border-radius: var(--radius-lg);
      padding: 30px;
      background: #fff;
      border: 1px solid rgba(28, 22, 48, .08);
      box-shadow: var(--shadow-sm);
    }

    .step-list {
      counter-reset: step;
      display: grid;
      gap: 14px;
      margin: 24px 0 0;
      padding: 0;
      list-style: none;
    }

    .step-list li {
      counter-increment: step;
      display: grid;
      grid-template-columns: 42px 1fr;
      gap: 14px;
      align-items: start;
      padding: 15px;
      border-radius: 20px;
      background: var(--surface-3);
      border: 1px solid rgba(28, 22, 48, .07);
    }

    .step-list li::before {
      content: counter(step);
      width: 42px;
      height: 42px;
      border-radius: 15px;
      display: grid;
      place-items: center;
      background: #171427;
      color: #fff;
      font-weight: 950;
    }

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

    .check-list li {
      display: flex;
      gap: 12px;
      align-items: flex-start;
      color: #504a61;
    }

    .check-list i {
      margin-top: 5px;
      color: var(--success);
    }

    .compare-section {
      background:
        radial-gradient(circle at 12% 12%, rgba(34, 211, 238, .12), transparent 28rem),
        linear-gradient(180deg, #fff, #f8f5ff);
    }

    .compare-wrap {
      margin-top: 34px;
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      gap: 22px;
      align-items: stretch;
    }

    .compare-card {
      position: relative;
      padding: 30px;
      border-radius: var(--radius-lg);
      background: #fff;
      border: 1px solid rgba(28, 22, 48, .08);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
    }

    .compare-card.recommended {
      background:
        radial-gradient(circle at 88% 10%, rgba(255, 209, 102, .18), transparent 14rem),
        linear-gradient(145deg, #181329, #2b1c55);
      color: #fff;
      transform: translateY(-8px);
      box-shadow: var(--shadow-lg);
      border-color: rgba(255, 255, 255, .14);
    }

    .compare-card.recommended p,
    .compare-card.recommended .compare-list li {
      color: rgba(255, 255, 255, .72);
    }

    .recommend-badge {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      padding: 8px 12px;
      border-radius: 999px;
      background: rgba(255, 209, 102, .16);
      border: 1px solid rgba(255, 209, 102, .35);
      color: #ffe6a2;
      font-weight: 900;
      font-size: 13px;
      margin-bottom: 18px;
    }

    .compare-list {
      display: grid;
      gap: 13px;
      list-style: none;
      padding: 0;
      margin: 22px 0 0;
    }

    .compare-list li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      color: #5c566f;
    }

    .compare-list i {
      margin-top: 5px;
      color: var(--primary);
    }

    .recommended .compare-list i {
      color: var(--accent);
    }

    .security-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 16px;
      margin-top: 34px;
    }

    .security-card {
      padding: 24px;
      border-radius: 28px;
      background: rgba(255, 255, 255, .88);
      border: 1px solid rgba(28, 22, 48, .08);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .security-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }

    .security-icon {
      width: 52px;
      height: 52px;
      border-radius: 18px;
      display: grid;
      place-items: center;
      margin-bottom: 16px;
      background: rgba(139, 92, 246, .1);
      color: var(--primary);
      font-size: 22px;
    }

    .testimonials {
      background:
        linear-gradient(180deg, rgba(17, 20, 33, 0) 0%, rgba(17, 20, 33, .04) 100%);
    }

    .testimonial-layout {
      display: grid;
      grid-template-columns: .8fr 1.2fr;
      gap: 22px;
      align-items: start;
      margin-top: 34px;
    }

    .testimonial-highlight {
      padding: 34px;
      border-radius: var(--radius-lg);
      color: #fff;
      background:
        radial-gradient(circle at 80% 12%, rgba(34, 211, 238, .19), transparent 14rem),
        linear-gradient(145deg, #111421, #2a1745);
      box-shadow: var(--shadow-lg);
    }

    .quote-mark {
      width: 58px;
      height: 58px;
      border-radius: 20px;
      display: grid;
      place-items: center;
      background: rgba(255, 255, 255, .1);
      color: var(--accent);
      font-size: 24px;
      margin-bottom: 22px;
    }

    .testimonial-highlight p {
      color: rgba(255, 255, 255, .78);
      font-size: 18px;
      margin: 0;
    }

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

    .testimonial-card {
      padding: 24px;
      border-radius: 28px;
      background: #fff;
      border: 1px solid rgba(28, 22, 48, .08);
      box-shadow: var(--shadow-sm);
    }

    .avatar-line {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }

    .avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      background: linear-gradient(135deg, var(--primary), var(--primary-3));
      color: #fff;
      font-weight: 950;
    }

    .stars {
      color: #f6b93b;
      font-size: 13px;
      margin-top: 2px;
    }

    .news-section {
      background: #fff;
    }

    .news-layout {
      display: grid;
      grid-template-columns: 1.25fr .75fr;
      gap: 24px;
      margin-top: 34px;
      align-items: start;
    }

    .news-list {
      border-radius: var(--radius-lg);
      background: #fff;
      border: 1px solid rgba(28, 22, 48, .08);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
    }

    .news-item {
      display: grid;
      grid-template-columns: 108px 1fr auto;
      gap: 18px;
      align-items: center;
      padding: 22px;
      border-bottom: 1px solid rgba(28, 22, 48, .08);
    }

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

    .news-date {
      padding: 12px;
      border-radius: 20px;
      background: var(--surface-2);
      text-align: center;
      color: var(--primary);
      font-weight: 950;
      line-height: 1.2;
    }

    .news-date small {
      display: block;
      color: var(--muted);
      font-size: 12px;
      margin-top: 4px;
      font-weight: 800;
    }

    .news-title {
      font-size: 18px;
      font-weight: 950;
      margin: 0 0 6px;
      letter-spacing: -.02em;
    }

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

    .news-arrow {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      background: #f6f2ff;
      color: var(--primary);
    }

    .news-item:hover {
      background: #fbfaff;
    }

    .news-item:hover .news-arrow {
      background: var(--primary);
      color: #fff;
      transform: translateX(3px);
    }

    .recommend-panel {
      padding: 26px;
      border-radius: var(--radius-lg);
      background:
        radial-gradient(circle at 82% 16%, rgba(236, 72, 153, .14), transparent 13rem),
        linear-gradient(145deg, #fbf9ff, #fff);
      border: 1px solid rgba(28, 22, 48, .08);
      box-shadow: var(--shadow-sm);
    }

    .mini-topic {
      display: flex;
      justify-content: space-between;
      gap: 14px;
      padding: 15px 0;
      border-bottom: 1px solid rgba(28, 22, 48, .08);
      color: #504a61;
    }

    .mini-topic:last-child {
      border-bottom: 0;
    }

    .mini-topic strong {
      color: var(--text);
    }

    .faq-section {
      background:
        radial-gradient(circle at 80% 6%, rgba(139, 92, 246, .1), transparent 24rem),
        linear-gradient(180deg, #fff, #f8f5ff);
    }

    .faq-layout {
      display: grid;
      grid-template-columns: .8fr 1.2fr;
      gap: 28px;
      margin-top: 34px;
      align-items: start;
    }

    .faq-aside {
      padding: 30px;
      border-radius: var(--radius-lg);
      background: #171427;
      color: #fff;
      position: sticky;
      top: calc(var(--nav-h) + 22px);
      overflow: hidden;
    }

    .faq-aside::after {
      content: "";
      position: absolute;
      width: 210px;
      height: 210px;
      right: -90px;
      bottom: -80px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(236, 72, 153, .42), transparent 70%);
    }

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

    .accordion-item {
      border: 1px solid rgba(28, 22, 48, .08) !important;
      border-radius: 24px !important;
      overflow: hidden;
      box-shadow: 0 10px 24px rgba(28, 22, 48, .05);
      background: #fff;
    }

    .accordion-button {
      padding: 20px 22px;
      border: 0;
      background: #fff;
      color: var(--text);
      font-weight: 950;
      font-size: 17px;
      box-shadow: none !important;
    }

    .accordion-button:not(.collapsed) {
      color: #6d3ee4;
      background: #fbf9ff;
    }

    .accordion-button::after {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background-color: #f2edff;
      background-position: center;
      background-size: 16px;
    }

    .accordion-body {
      padding: 0 22px 22px;
      color: var(--muted);
      font-size: 15px;
    }

    .cta-section {
      padding: 84px 0 104px;
      background:
        radial-gradient(circle at 10% 20%, rgba(255, 209, 102, .14), transparent 20rem),
        radial-gradient(circle at 88% 18%, rgba(34, 211, 238, .14), transparent 22rem),
        #111421;
      color: #fff;
    }

    .cta-panel {
      display: grid;
      grid-template-columns: 1fr 430px;
      gap: 28px;
      align-items: center;
      padding: clamp(26px, 5vw, 52px);
      border-radius: var(--radius-xl);
      border: 1px solid rgba(255, 255, 255, .14);
      background:
        linear-gradient(135deg, rgba(255, 255, 255, .1), rgba(255, 255, 255, .04)),
        radial-gradient(circle at 80% 16%, rgba(236, 72, 153, .18), transparent 18rem);
      box-shadow: var(--shadow-lg);
    }

    .cta-panel h2 {
      margin: 0;
      font-size: clamp(32px, 4vw, 54px);
      line-height: 1.12;
      font-weight: 1000;
      letter-spacing: -.05em;
    }

    .cta-panel p {
      color: rgba(255, 255, 255, .72);
      font-size: 17px;
      margin: 18px 0 0;
      max-width: 690px;
    }

    .signup-card {
      padding: 24px;
      border-radius: 30px;
      background: rgba(255, 255, 255, .95);
      color: var(--text);
      box-shadow: 0 24px 70px rgba(0, 0, 0, .26);
    }

    .form-label {
      font-weight: 900;
      color: var(--text);
      margin-bottom: 8px;
    }

    .form-control,
    .form-select {
      min-height: 48px;
      border-radius: 16px;
      border: 1px solid rgba(28, 22, 48, .12);
      background-color: #fff;
      color: var(--text);
      box-shadow: none;
      transition: var(--transition);
    }

    .form-control:focus,
    .form-select:focus {
      border-color: rgba(139, 92, 246, .55);
      box-shadow: 0 0 0 4px rgba(139, 92, 246, .12);
    }

    .form-hint {
      color: var(--muted);
      font-size: 13px;
      margin-top: 10px;
    }

    .form-message {
      display: none;
      margin-top: 12px;
      padding: 12px 14px;
      border-radius: 16px;
      background: rgba(38, 194, 129, .1);
      color: #15895b;
      font-weight: 800;
      font-size: 14px;
    }

    .site-footer {
      background: #080a12;
      color: rgba(255, 255, 255, .74);
      padding: 58px 0 28px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.2fr .8fr .8fr;
      gap: 30px;
      padding-bottom: 34px;
      border-bottom: 1px solid rgba(255, 255, 255, .1);
    }

    .footer-brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      color: #fff;
      font-weight: 950;
      font-size: 20px;
      margin-bottom: 14px;
    }

    .footer-brand .brand-mark {
      width: 40px;
      height: 40px;
      box-shadow: none;
    }

    .footer-title {
      color: #fff;
      font-weight: 950;
      margin-bottom: 14px;
    }

    .footer-links {
      display: grid;
      gap: 10px;
    }

    .footer-links a {
      color: rgba(255, 255, 255, .64);
    }

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

    .footer-bottom {
      display: flex;
      justify-content: space-between;
      gap: 16px;
      flex-wrap: wrap;
      padding-top: 24px;
      color: rgba(255, 255, 255, .52);
      font-size: 14px;
    }

    @media (max-width: 1024px) {
      :root {
        --nav-h: auto;
      }

      .site-header {
        min-height: 72px;
        height: auto;
        padding: 12px 0;
      }

      .nav-center,
      .nav-actions {
        display: none;
      }

      .navbar-toggler-custom {
        display: grid;
        place-items: center;
      }

      .mobile-panel.show {
        display: grid;
        gap: 12px;
      }

      .mobile-panel .nav-center,
      .mobile-panel .nav-actions {
        display: grid;
        width: 100%;
      }

      .mobile-panel .nav-center {
        border-radius: 18px;
        justify-content: stretch;
      }

      .mobile-panel .command-search {
        width: 100%;
      }

      .mobile-panel .nav-actions {
        grid-template-columns: 1fr;
      }

      .hero-inner {
        grid-template-columns: 1fr;
        min-height: auto;
      }

      .poster-wrap {
        min-height: 560px;
      }

      .metric-shell,
      .feature-layout,
      .guide-grid,
      .compare-wrap,
      .testimonial-layout,
      .news-layout,
      .faq-layout,
      .cta-panel {
        grid-template-columns: 1fr;
      }

      .feature-sticky,
      .faq-aside {
        position: relative;
        top: auto;
      }

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

      .cta-panel {
        align-items: stretch;
      }
    }

    @media (max-width: 768px) {
      .container-custom {
        width: min(100% - 28px, var(--container));
      }

      .section,
      .section-tight {
        padding: 58px 0;
      }

      .hero {
        padding: 24px 0 54px;
      }

      .hero-stage,
      .hero-inner {
        border-radius: 28px;
      }

      .hero-inner {
        padding: 24px;
      }

      .hero-data-row,
      .metric-grid,
      .testimonial-grid,
      .security-grid {
        grid-template-columns: 1fr;
      }

      .poster-card {
        min-height: 500px;
        transform: none;
      }

      .float-badge {
        display: none;
      }

      .feature-card {
        grid-template-columns: 1fr;
      }

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

      .news-arrow {
        display: none;
      }

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

    @media (max-width: 520px) {
      .brand-text {
        font-size: 17px;
      }

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

      .hero h1 {
        font-size: 38px;
        letter-spacing: -.055em;
      }

      .hero-intro,
      .section-lead,
      .cta-panel p {
        font-size: 15px;
      }

      .hero-actions {
        align-items: stretch;
      }

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

      .poster-wrap {
        min-height: 460px;
      }

      .poster-card {
        min-height: 430px;
        border-radius: 28px;
      }

      .poster-persona {
        width: 170px;
        height: 245px;
      }

      .poster-title h2 {
        font-size: 28px;
      }

      .metric-shell,
      .metric-main,
      .metric-side,
      .guide-card,
      .compare-card,
      .testimonial-highlight,
      .faq-aside,
      .signup-card {
        padding: 20px;
        border-radius: 24px;
      }

      .section-title,
      .cta-panel h2 {
        letter-spacing: -.035em;
      }
    }

/* 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}