/* roulang page: index */
:root {
    --bg-deep: #020509;
    --bg-main: #0A0F1E;
    --bg-soft: #0d1626;
    --bg-card: rgba(18, 32, 50, 0.62);
    --bg-card-hover: rgba(25, 42, 62, 0.80);
    --bg-glass: rgba(8, 17, 30, 0.70);
    --primary: #2AC6E6;
    --primary-dark: #0D7C9E;
    --primary-glow: rgba(42, 198, 230, 0.28);
    --accent: #F2B84B;
    --accent-soft: #FFC468;
    --text-main: #EDF3FC;
    --text-soft: #b0c5da;
    --text-weak: #7E93AC;
    --border: #2c496b;
    --border-light: rgba(140, 178, 214, 0.16);
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --font-main: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", sans-serif;
    --font-display: "Rajdhani", "DIN Alternate", "PingFang SC", "Microsoft YaHei", sans-serif;
    --transition: all .25s ease;
    --shadow-card: 0 14px 44px rgba(1, 5, 14, 0.5);
    --shadow-glow: 0 0 22px rgba(42, 198, 230, 0.18);
  }
  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  html {
    scroll-behavior: smooth;
  }
  body {
    font-family: var(--font-main);
    background: var(--bg-main);
    color: var(--text-main);
    line-height: 1.7;
    font-size: 16px;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
  }
  body::before {
    content: "";
    position: fixed;
    inset: 0;
    background:
      radial-gradient(ellipse at 80% -10%, rgba(18, 82, 122, 0.22) 0%, transparent 55%),
      radial-gradient(ellipse at 10% 100%, rgba(10, 50, 80, 0.12) 0%, transparent 50%),
      linear-gradient(180deg, #0a101e 0%, #04070e 100%);
    z-index: -2;
    pointer-events: none;
  }
  body::after {
    content: "";
    position: fixed;
    inset: 0;
    background-image:
      linear-gradient(rgba(65, 105, 150, 0.05) 1px, transparent 1px),
      linear-gradient(90deg, rgba(65, 105, 150, 0.05) 1px, transparent 1px);
    background-size: 80px 80px;
    z-index: -1;
    pointer-events: none;
  }
  a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
  }
  a:hover {
    color: var(--accent-soft);
  }
  ul,
  ol {
    list-style: none;
  }
  img {
    max-width: 100%;
    display: block;
  }
  button,
  input,
  select,
  textarea {
    font-family: inherit;
    font-size: inherit;
    border: none;
    outline: none;
    background: transparent;
    color: inherit;
  }
  button {
    cursor: pointer;
  }
  .container {
    width: min(1200px, 92%);
    margin: 0 auto;
  }
  .section {
    padding: 90px 0;
    position: relative;
  }
  .section-title {
    font-size: 36px;
    line-height: 1.3;
    font-weight: 600;
    color: var(--text-main);
    letter-spacing: -0.01em;
    margin-bottom: 14px;
  }
  .section-sub {
    font-size: 17px;
    color: var(--text-soft);
    max-width: 680px;
    line-height: 1.8;
    margin-bottom: 42px;
  }
  .section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 30px;
    margin-bottom: 40px;
  }
  .section-head .subtext {
    max-width: 460px;
    font-size: 15px;
    color: var(--text-weak);
    line-height: 1.7;
  }
  .text-accent {
    color: var(--accent);
  }
  .text-primary {
    color: var(--primary);
  }
  .glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
    transition: var(--transition);
  }
  .glass-card:hover {
    background: var(--bg-card-hover);
    border-color: rgba(42, 198, 230, 0.25);
    transform: translateY(-3px);
    box-shadow: 0 18px 50px rgba(1, 5, 14, 0.55), var(--shadow-glow);
  }
  /* ---------- header & nav ---------- */
  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background: rgba(6, 12, 22, 0.72);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(115, 153, 198, 0.12);
    transition: var(--transition);
  }
  .site-header.scrolled {
    background: rgba(4, 8, 16, 0.92);
    box-shadow: 0 6px 30px rgba(0, 0, 0, 0.4);
  }
  .nav-wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 74px;
    max-width: 1320px;
    margin: 0 auto;
    padding: 0 3%;
  }
  .brand-logo {
    display: flex;
    align-items: baseline;
    gap: 2px;
    color: var(--text-main);
    overflow: hidden;
    flex-shrink: 0;
  }
  .brand-logo .logo-big {
    font-size: 30px;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: 1px;
    text-shadow: 0 0 28px var(--primary-glow);
  }
  .brand-logo .logo-sub {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-soft);
    letter-spacing: 0.5px;
    align-self: flex-end;
    padding-bottom: 4px;
  }
  .nav-menu {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-left: 24px;
  }
  .nav-menu .nav-link {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    color: var(--text-soft);
    font-size: 15px;
    font-weight: 400;
    padding: 9px 16px;
    border-radius: 999px;
    transition: var(--transition);
    position: relative;
    white-space: nowrap;
  }
  .nav-menu .nav-link i {
    font-size: 13px;
    opacity: 0.8;
  }
  .nav-menu .nav-link:hover {
    color: var(--primary);
    background: rgba(42, 198, 230, 0.06);
  }
  .nav-menu .nav-link.active {
    color: var(--primary);
    background: rgba(42, 198, 230, 0.08);
    font-weight: 500;
  }
  .nav-menu .nav-link.active::after {
    content: "";
    position: absolute;
    bottom: 2px;
    left: 50%;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--primary);
    transform: translateX(-50%);
    box-shadow: 0 0 8px var(--primary);
  }
  .nav-right {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-left: auto;
  }
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 24px;
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 15px;
    line-height: 1.5;
    transition: var(--transition);
    cursor: pointer;
    white-space: nowrap;
  }
  .btn-primary {
    background: linear-gradient(135deg, #16B7D4 0%, #0d7c9e 100%);
    color: #fff;
    box-shadow: 0 0 0 1px rgba(42, 198, 230, 0.3), 0 0 18px rgba(42, 198, 230, 0.18);
  }
  .btn-primary:hover {
    box-shadow: 0 0 0 1px rgba(42, 198, 230, 0.5), 0 0 28px rgba(42, 198, 230, 0.35);
    color: #fff;
    transform: translateY(-2px);
  }
  .btn-primary:active {
    transform: translateY(1px);
    box-shadow: 0 0 0 1px rgba(42, 198, 230, 0.2), 0 0 10px rgba(42, 198, 230, 0.1);
  }
  .btn-ghost {
    background: transparent;
    border: 1px solid var(--border-light);
    color: var(--text-soft);
  }
  .btn-ghost:hover {
    color: var(--primary);
    border-color: rgba(42, 198, 230, 0.5);
    background: rgba(42, 198, 230, 0.06);
  }
  .btn-light {
    background: rgba(242, 184, 75, 0.12);
    color: var(--accent-soft);
    border: 1px solid rgba(242, 184, 75, 0.3);
  }
  .btn-light:hover {
    background: rgba(242, 184, 75, 0.22);
    color: #fcd58a;
    box-shadow: 0 0 18px rgba(242, 184, 75, 0.18);
  }
  .nav-cta-btn {
    padding: 8px 20px;
    font-size: 14px;
    border-radius: var(--radius-sm);
  }
  .nav-news-link {
    color: var(--text-soft);
    font-size: 14px;
    padding: 6px 10px;
    border-radius: 8px;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    white-space: nowrap;
  }
  .nav-news-link i {
    font-size: 13px;
  }
  .nav-news-link:hover {
    color: var(--accent);
    background: rgba(242, 184, 75, 0.08);
  }
  .hamburger-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 42px;
    height: 42px;
    background: rgba(42, 198, 230, 0.06);
    border: 1px solid var(--border-light);
    border-radius: 10px;
    gap: 5px;
    cursor: pointer;
    transition: var(--transition);
  }
  .hamburger-btn span {
    display: block;
    width: 18px;
    height: 2px;
    background: var(--text-soft);
    border-radius: 2px;
    transition: var(--transition);
  }
  .hamburger-btn.open span:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
  }
  .hamburger-btn.open span:nth-child(2) {
    opacity: 0;
  }
  .hamburger-btn.open span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }
  .mobile-menu {
    position: fixed;
    top: 74px;
    left: 0;
    width: 100%;
    background: rgba(5, 10, 20, 0.98);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--border-light);
    padding: 16px 4% 28px;
    display: none;
    z-index: 99;
  }
  .mobile-menu.open {
    display: block;
  }
  .mobile-menu a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: var(--text-soft);
    font-size: 16px;
    padding: 12px 6px;
    border-bottom: 1px solid rgba(128, 160, 200, 0.08);
  }
  .mobile-menu a i {
    font-size: 14px;
  }
  .mobile-menu a:hover,
  .mobile-menu a.active {
    color: var(--primary);
  }
  /* ---------- hero ---------- */
  .hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 130px 0 70px;
    position: relative;
    background:
      linear-gradient(90deg, rgba(5, 9, 18, 0.92) 0%, rgba(5, 9, 18, 0.8) 45%, rgba(5, 9, 18, 0.45) 100%),
      url('/assets/images/backpic/back-2.png') no-repeat center center/cover;
    overflow: hidden;
  }
  .hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 80% 20%, rgba(42, 198, 230, 0.12) 0%, transparent 60%);
  }
  .hero-inner {
    display: grid;
    grid-template-columns: 1.08fr 0.92fr;
    gap: 60px;
    align-items: center;
    width: min(1200px, 92%);
    margin: 0 auto;
    position: relative;
    z-index: 2;
  }
  .hero-content .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(42, 198, 230, 0.1);
    border: 1px solid rgba(42, 198, 230, 0.2);
    color: var(--primary);
    font-size: 14px;
    padding: 7px 18px;
    border-radius: 999px;
    margin-bottom: 26px;
    letter-spacing: 0.3px;
  }
  .hero-content .eyebrow i {
    font-size: 13px;
  }
  .hero h1 {
    font-size: 55px;
    line-height: 1.2;
    color: var(--text-main);
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: -0.01em;
    max-width: 620px;
  }
  .hero h1 .line-accent {
    display: block;
    color: var(--primary);
    text-shadow: 0 0 40px rgba(42, 198, 230, 0.3);
  }
  .hero-desc {
    font-size: 17px;
    color: var(--text-soft);
    line-height: 1.9;
    margin-bottom: 30px;
    max-width: 540px;
  }
  .hero-btns {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    align-items: center;
    margin-bottom: 36px;
  }
  .hero-features {
    display: grid;
    grid-template-columns: repeat(4, auto);
    gap: 16px 30px;
    max-width: 600px;
    padding-top: 30px;
    border-top: 1px solid rgba(130, 170, 210, 0.1);
  }
  .hero-features .feature-item {
    display: flex;
    align-items: center;
    gap: 9px;
    color: var(--text-soft);
    font-size: 14px;
  }
  .hero-features .feature-item i {
    color: var(--primary);
    font-size: 15px;
    width: 18px;
  }
  .hero-visual {
    position: relative;
  }
  .hero-visual .visual-panel {
    background: rgba(9, 20, 35, 0.55);
    border: 1px solid rgba(42, 198, 230, 0.2);
    border-radius: 18px;
    padding: 26px 26px 20px;
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.6);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(8px);
  }
  .visual-panel::before {
    content: "";
    position: absolute;
    top: -20%;
    left: -10%;
    width: 60%;
    height: 60%;
    background: radial-gradient(circle, rgba(42, 198, 230, 0.18), transparent 70%);
  }
  .visual-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 16px;
    border-bottom: 1px solid rgba(130, 170, 210, 0.12);
  }
  .visual-panel-header .pane-title {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-main);
    font-size: 15px;
    font-weight: 500;
  }
  .visual-panel-header .pane-title i {
    color: var(--primary);
  }
  .visual-panel-header .pane-status {
    font-size: 12px;
    color: var(--accent);
    background: rgba(242, 184, 75, 0.12);
    padding: 3px 10px;
    border-radius: 999px;
  }
  .visual-panel-body {
    padding: 20px 0 8px;
  }
  .visual-node {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 18px;
  }
  .visual-node .node-mark {
    width: 36px;
    height: 36px;
    background: rgba(42, 198, 230, 0.12);
    border: 1px solid rgba(42, 198, 230, 0.3);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    flex-shrink: 0;
  }
  .visual-node .node-content {
    flex: 1;
  }
  .visual-node .node-content .t1 {
    font-size: 15px;
    color: var(--text-main);
    margin-bottom: 4px;
  }
  .visual-node .node-content .t2 {
    font-size: 13px;
    color: var(--text-weak);
    line-height: 1.5;
  }
  .visual-progress {
    height: 4px;
    border-radius: 4px;
    background: rgba(128, 160, 200, 0.15);
    overflow: hidden;
    margin: 18px 0 14px;
  }
  .visual-progress .bar-fill {
    width: 80%;
    height: 100%;
    background: linear-gradient(90deg, var(--primary-dark), var(--primary));
    border-radius: 4px;
  }
  .visual-panel-footer {
    font-size: 12px;
    color: var(--text-weak);
    display: flex;
    justify-content: space-between;
    padding-top: 12px;
    border-top: 1px solid rgba(130, 170, 210, 0.08);
  }
  .hero-scroll {
    position: absolute;
    bottom: 22px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--text-weak);
    font-size: 13px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    animation: updown 3s infinite;
  }
  @keyframes updown {
    0%,
    100% {
      transform: translate(-50%, 0);
    }
    50% {
      transform: translate(-50%, -8px);
    }
  }
  /* ---------- quick entry cards ---------- */
  .quick-entry {
    padding: 90px 0 80px;
  }
  .quick-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
  }
  .quick-card {
    border-radius: var(--radius-md);
    padding: 28px 24px;
    position: relative;
    overflow: hidden;
  }
  .quick-card::after {
    content: "";
    position: absolute;
    right: -26px;
    bottom: -26px;
    width: 100px;
    height: 100px;
    background: rgba(42, 198, 230, 0.07);
    border-radius: 50%;
    transition: var(--transition);
  }
  .quick-card:hover::after {
    background: rgba(42, 198, 230, 0.13);
    transform: scale(1.3);
  }
  .quick-card .card-icon {
    width: 46px;
    height: 46px;
    border-radius: 12px;
    background: rgba(42, 198, 230, 0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 19px;
    color: var(--primary);
    margin-bottom: 18px;
    border: 1px solid rgba(42, 198, 230, 0.15);
  }
  .quick-card .card-num {
    position: absolute;
    top: 20px;
    right: 22px;
    font-family: var(--font-display);
    font-size: 28px;
    font-weight: 600;
    color: rgba(128, 160, 200, 0.2);
    line-height: 1;
  }
  .quick-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 10px;
  }
  .quick-card p {
    font-size: 14px;
    color: var(--text-weak);
    line-height: 1.75;
    margin-bottom: 16px;
  }
  .quick-card .more-link {
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--primary);
  }
  .quick-card .more-link i {
    transition: transform .25s;
  }
  .quick-card .more-link:hover i {
    transform: translateX(5px);
  }
  /* ---------- ladder step ---------- */
  .ladder-section {
    background: linear-gradient(180deg, transparent, rgba(12, 24, 42, 0.25), transparent);
    padding: 60px 0 90px;
  }
  .ladder-row {
    display: flex;
    align-items: flex-end;
    justify-content: center;
    gap: 24px;
    margin-top: 20px;
    position: relative;
  }
  .ladder-row::before {
    content: "";
    position: absolute;
    top: 20%;
    bottom: 15%;
    left: 6%;
    right: 6%;
    border-top: 1px dashed rgba(130, 170, 210, 0.18);
    z-index: 0;
  }
  .ladder-card {
    position: relative;
    z-index: 1;
    width: 32%;
    border-radius: var(--radius-md);
    padding: 28px 24px;
  }
  .ladder-card .step-tag {
    display: inline-block;
    padding: 4px 16px;
    background: rgba(42, 198, 230, 0.12);
    border: 1px solid rgba(42, 198, 230, 0.22);
    color: var(--primary);
    font-size: 13px;
    border-radius: 999px;
    margin-bottom: 16px;
  }
  .ladder-card .step-tag.gold {
    background: rgba(242, 184, 75, 0.12);
    border-color: rgba(242, 184, 75, 0.3);
    color: var(--accent);
  }
  .ladder-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 10px;
    line-height: 1.4;
  }
  .ladder-card p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-weak);
    margin-bottom: 14px;
  }
  .ladder-card .mini-progress {
    height: 5px;
    border-radius: 5px;
    background: rgba(128, 160, 200, 0.12);
    overflow: hidden;
    margin-bottom: 10px;
  }
  .ladder-card .mini-progress .fill {
    height: 100%;
    border-radius: 5px;
    background: linear-gradient(90deg, var(--primary-dark), var(--primary));
  }
  .ladder-card .mini-progress .fill.gold {
    background: linear-gradient(90deg, #c8953a, var(--accent-soft));
  }
  .ladder-card-lv1 {
    height: 340px;
  }
  .ladder-card-lv2 {
    height: 400px;
  }
  .ladder-card-lv3 {
    height: 460px;
    border-color: rgba(242, 184, 75, 0.4);
    box-shadow: 0 20px 80px rgba(0, 0, 0, 0.55), 0 0 40px rgba(242, 184, 75, 0.08);
  }
  .ladder-card-lv3 .gold-tip {
    font-size: 13px;
    color: var(--accent);
    margin-top: 8px;
  }
  /* ---------- compare table ---------- */
  .compare-section {
    padding: 90px 0;
  }
  .compare-layout {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 30px;
  }
  .compare-col {
    padding: 30px;
    border-radius: var(--radius-md);
  }
  .compare-col-intro h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 16px;
    line-height: 1.4;
  }
  .compare-col-intro p {
    color: var(--text-soft);
    line-height: 1.85;
    font-size: 15px;
    margin-bottom: 30px;
  }
  .compare-col-intro .points-list {
    padding-left: 0;
  }
  .compare-col-intro .points-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 20px;
    font-size: 15px;
    color: var(--text-soft);
  }
  .compare-col-intro .points-list li i {
    color: var(--primary);
    margin-top: 3px;
    flex-shrink: 0;
    width: 18px;
    text-align: center;
  }
  .compare-col-table {
    overflow: hidden;
  }
  .cmp-table {
    width: 100%;
    border-collapse: collapse;
  }
  .cmp-table th,
  .cmp-table td {
    padding: 15px 18px;
    text-align: left;
    font-size: 14px;
    border-bottom: 1px solid rgba(130, 170, 210, 0.1);
    color: var(--text-soft);
    transition: background .2s;
  }
  .cmp-table tr:last-child td {
    border-bottom: none;
  }
  .cmp-table tr:hover td {
    background: rgba(42, 198, 230, 0.05);
  }
  .cmp-table th {
    font-weight: 600;
    color: var(--text-main);
    background: rgba(130, 170, 210, 0.05);
    font-size: 14px;
  }
  .cmp-table .highlight-col {
    background: rgba(42, 198, 230, 0.06);
    color: var(--text-main);
    border-left: 1px solid rgba(42, 198, 230, 0.2);
    border-right: 1px solid rgba(42, 198, 230, 0.2);
  }
  .cmp-table .col-head-cell {
    font-weight: 600;
    color: var(--primary);
  }
  .cmp-table .row-label {
    color: var(--text-weak);
  }
  .cmp-table .table-title-row th {
    font-size: 16px;
    padding: 18px 18px;
  }
  .cmp-table .table-title-row .hl {
    background: rgba(42, 198, 230, 0.08);
    border-top: 2px solid var(--primary);
  }
  .cmp-badge {
    display: inline-block;
    font-size: 12px;
    font-weight: 400;
    color: var(--accent);
    background: rgba(242, 184, 75, 0.1);
    padding: 1px 8px;
    border-radius: 999px;
    margin-left: 5px;
  }
  /* ---------- timing banner ---------- */
  .timing-section {
    padding: 20px 0 90px;
  }
  .timing-banner {
    background:
      linear-gradient(122deg, rgba(16, 24, 42, 0.92) 0%, rgba(8, 12, 24, 0.96) 100%),
      url('/assets/images/backpic/back-3.webp') no-repeat center center/cover;
    border-radius: var(--radius-lg);
    padding: 64px 5%;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(242, 184, 75, 0.2);
    text-align: center;
  }
  .timing-banner::before {
    content: "";
    position: absolute;
    top: 0;
    left: 50%;
    width: 40%;
    height: 60%;
    background: radial-gradient(ellipse, rgba(242, 184, 75, 0.1), transparent);
    transform: translateX(-50%);
    pointer-events: none;
  }
  .timing-banner.section-glow {
    box-shadow: 0 0 60px rgba(242, 184, 75, 0.05);
  }
  .timing-title {
    font-size: 30px;
    font-weight: 600;
    line-height: 1.4;
    color: var(--text-main);
    margin-bottom: 12px;
  }
  .timing-title span {
    color: var(--accent);
  }
  .timing-sub {
    color: var(--text-soft);
    font-size: 15px;
    max-width: 560px;
    margin: 0 auto 32px;
    line-height: 1.8;
  }
  .countdown {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 32px;
  }
  .countdown-item {
    background: rgba(10, 16, 30, 0.9);
    border: 1px solid rgba(242, 184, 75, 0.2);
    border-radius: 12px;
    padding: 16px 10px;
    min-width: 72px;
    text-align: center;
  }
  .countdown-item .num {
    font-family: var(--font-display);
    font-size: 34px;
    font-weight: 600;
    color: var(--accent-soft);
    line-height: 1;
    text-shadow: 0 0 14px rgba(242, 184, 75, 0.3);
  }
  .countdown-item .unit {
    font-size: 12px;
    color: var(--text-weak);
    margin-top: 6px;
  }
  /* ---------- cms info list ---------- */
  .cms-section {
    padding: 90px 0 100px;
    background: rgba(10, 18, 32, 0.5);
  }
  .cms-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .post-card {
    border-radius: var(--radius-md);
    padding: 24px 26px;
    display: flex;
    flex-direction: column;
    gap: 10px;
  }
  .post-card-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  .post-card-tag {
    display: inline-block;
    padding: 3px 14px;
    font-size: 12px;
    border-radius: 999px;
    color: var(--primary);
    background: rgba(42, 198, 230, 0.12);
    border: 1px solid rgba(42, 198, 230, 0.18);
  }
  .post-date {
    color: var(--text-weak);
    font-size: 13px;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-variant-numeric: tabular-nums;
  }
  .post-card h3 {
    font-size: 18px;
    font-weight: 600;
    line-height: 1.5;
    margin-bottom: 0;
  }
  .post-card h3 a {
    color: var(--text-main);
  }
  .post-card h3 a:hover {
    color: var(--primary);
  }
  .post-summary {
    color: var(--text-weak);
    font-size: 14px;
    line-height: 1.8;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  .post-link {
    align-self: flex-start;
    font-size: 14px;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 5px;
    margin-top: auto;
  }
  .post-link i {
    font-size: 12px;
  }
  .empty-tip {
    grid-column: span 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    color: var(--text-weak);
    font-size: 15px;
    background: rgba(42, 198, 230, 0.03);
    border: 1px dashed rgba(130, 170, 210, 0.15);
    border-radius: var(--radius-md);
  }
  .empty-tip i {
    font-size: 40px;
    color: rgba(130, 170, 210, 0.35);
    margin-bottom: 16px;
  }
  /* ---------- FAQ ---------- */
  .faq-section {
    padding: 90px 0;
  }
  .faq-layout {
    max-width: 900px;
    margin: 0 auto;
  }
  .faq-item {
    border: 1px solid var(--border-light);
    border-radius: 14px;
    background: rgba(14, 24, 42, 0.5);
    margin-bottom: 14px;
    overflow: hidden;
    transition: var(--transition);
  }
  .faq-item:last-child {
    margin-bottom: 0;
  }
  .faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 26px;
    font-size: 16px;
    color: var(--text-main);
    font-weight: 500;
    text-align: left;
    background: transparent;
    cursor: pointer;
    transition: var(--transition);
  }
  .faq-question span {
    color: var(--primary);
    margin-right: 14px;
    font-size: 15px;
  }
  .faq-question .faq-icon {
    color: var(--text-weak);
    font-size: 14px;
    transition: transform .3s ease;
    flex-shrink: 0;
  }
  .faq-item.open .faq-question .faq-icon {
    transform: rotate(45deg);
  }
  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height .3s ease;
  }
  .faq-answer-inner {
    padding: 0 26px 22px;
    color: var(--text-soft);
    font-size: 15px;
    line-height: 1.9;
  }
  .faq-answer-inner p {
    margin-bottom: 10px;
  }
  .faq-answer-inner ul {
    padding-left: 22px;
  }
  .faq-answer-inner ul li {
    list-style: disc;
    margin-bottom: 5px;
    color: var(--text-soft);
  }
  /* ---------- form section ---------- */
  .form-section {
    padding: 80px 0;
  }
  .form-layout {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 34px;
    border-radius: var(--radius-lg);
    padding: 48px 4%;
    background:
      rgba(12, 24, 42, 0.65),
      url('/assets/images/backpic/back-1.webp') center center / cover;
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border-light);
  }
  .form-layout::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(8, 16, 30, 0.88), rgba(8, 16, 30, 0.75));
    z-index: 0;
  }
  .form-layout>* {
    position: relative;
    z-index: 1;
  }
  .form-intro h2 {
    font-size: 30px;
    font-weight: 600;
    color: var(--text-main);
    line-height: 1.4;
    margin-bottom: 20px;
  }
  .form-intro p {
    font-size: 15px;
    color: var(--text-soft);
    line-height: 1.9;
    margin-bottom: 28px;
  }
  .form-contact-items {
    display: flex;
    flex-direction: column;
    gap: 16px;
  }
  .contact-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    font-size: 15px;
    color: var(--text-soft);
  }
  .contact-item i {
    width: 34px;
    height: 34px;
    background: rgba(42, 198, 230, 0.12);
    color: var(--primary);
    align-items: center;
    justify-content: center;
    display: flex;
    flex-shrink: 0;
    border-radius: 9px;
    margin-top: 2px;
    font-size: 14px;
  }
  .contact-form {
    background: rgba(10, 20, 34, 0.8);
    border-radius: var(--radius-md);
    padding: 32px;
    border: 1px solid var(--border-light);
    position: relative;
  }
  .contact-form .form-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 6px;
  }
  .contact-form .form-desc {
    font-size: 13px;
    color: var(--text-weak);
    margin-bottom: 24px;
  }
  .form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 16px;
  }
  .form-group {
    margin-bottom: 16px;
  }
  .form-group label {
    display: block;
    color: var(--text-soft);
    font-size: 14px;
    margin-bottom: 7px;
    font-weight: 500;
  }
  .form-input,
  .form-textarea,
  .form-select {
    width: 100%;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(130, 170, 210, 0.2);
    border-radius: 10px;
    padding: 12px 15px;
    font-size: 14px;
    color: var(--text-main);
    transition: var(--transition);
  }
  .form-input::placeholder,
  .form-textarea::placeholder {
    color: rgba(128, 150, 180, 0.5);
  }
  .form-input:focus,
  .form-textarea:focus,
  .form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(42, 198, 230, 0.1), 0 0 16px rgba(42, 198, 230, 0.1);
    background: rgba(255, 255, 255, 0.06);
  }
  .form-textarea {
    min-height: 90px;
    resize: vertical;
  }
  .form-btn-group {
    margin-top: 20px;
  }
  .form-note {
    font-size: 12px;
    color: var(--text-weak);
    margin-top: 14px;
    line-height: 1.6;
    display: flex;
    align-items: flex-start;
    gap: 6px;
  }
  .form-note i {
    color: var(--primary);
    margin-top: 3px;
    font-size: 13px;
  }
  /* ---------- footer ---------- */
  .site-footer {
    border-top: 1px solid var(--border-light);
    background: rgba(4, 8, 16, 0.9);
    padding: 65px 0 20px;
    position: relative;
    overflow: hidden;
    width: 100%;
  }
  .site-footer::before {
    content: "";
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 70%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(42, 198, 230, 0.3), transparent);
  }
  .footer-grid {
    display: grid;
    grid-template-columns: 1.3fr 0.9fr 1.1fr 1.1fr;
    gap: 36px;
    margin-bottom: 38px;
    width: 100%;
  }
  .footer-about .footer-logo {
    display: flex;
    align-items: baseline;
    gap: 3px;
    margin-bottom: 16px;
  }
  .footer-about .footer-logo .flg1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
    text-shadow: 0 0 18px var(--primary-glow);
  }
  .footer-about .footer-logo .flg2 {
    font-size: 14px;
    color: var(--text-soft);
    line-height: 1
  }
  .footer-about p {
    color: var(--text-weak);
    font-size: 14px;
    line-height: 1.9;
    max-width: 340px;
  }
  .footer-grid .footer-col h4 {
    font-size: 16px;
    color: var(--text-main);
    font-weight: 600;
    margin-bottom: 18px;
  }
  .footer-grid .footer-links li {
    margin-bottom: 10px;
  }
  .footer-grid .footer-links a {
    color: var(--text-weak);
    font-size: 14px;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 6px;
  }
  .footer-grid .footer-links a i {
    font-size: 9px;
    opacity: 0.7;
  }
  .footer-grid .footer-links a:hover {
    color: var(--primary);
    padding-left: 2px;
  }
  .footer-bottom {
    border-top: 1px solid rgba(130, 170, 210, 0.1);
    padding-top: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    width: 100%;
  }
  .footer-bottom .copy {
    font-size: 13px;
    color: var(--text-weak);
  }
  .footer-bottom .copy a {
    color: var(--text-weak);
    transition: var(--transition);
  }
  .footer-bottom .copy a:hover {
    color: var(--primary);
  }
  .footer-links-legal {
    display: flex;
    gap: 18px;
  }
  .footer-links-legal a {
    font-size: 13px;
    color: var(--text-weak);
  }
  .footer-links-legal a:hover {
    color: var(--primary);
  }
  /* ---------- mobile responsive ---------- */
  @media screen and (max-width: 1200px) {
    .hero-features {
      grid-template-columns: repeat(2, 1fr);
    }
    .quick-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .compare-layout {
      grid-template-columns: 1fr;
    }
    .cmp-table {
      overflow-x: auto;
      display: block;
    }
    .cmp-table table {
      width: 100%;
    }
  }
  @media screen and (max-width: 992px) {
    .nav-menu {
      display: none;
    }
    .hamburger-btn {
      display: flex;
    }
    .nav-news-link {
      display: none;
    }
    .hero-inner {
      grid-template-columns: 1fr;
      gap: 40px;
      padding-top: 30px;
    }
    .hero {
      padding-top: 110px;
    }
    .hero-content .eyebrow {
      font-size: 13px;
    }
    .hero h1 {
      font-size: 42px;
    }
    .hero-features {
      grid-template-columns: repeat(2, auto);
    }
    .hero-visual {
      max-width: 560px;
    }
    .form-layout {
      grid-template-columns: 1fr;
    }
    .footer-grid {
      grid-template-columns: 1fr 1fr;
      gap: 28px;
    }
    .section-title {
      font-size: 30px;
    }
    .ladder-row {
      flex-direction: column;
      align-items: center;
    }
    .ladder-row::before {
      display: none;
    }
    .ladder-card {
      width: 100%;
      max-width: 520px;
      height: auto !important;
    }
    .timing-title {
      font-size: 25px;
    }
    .countdown-item {
      min-width: 60px;
      padding: 12px 4px;
    }
    .countdown-item .num {
      font-size: 26px;
    }
  }
  @media screen and (max-width: 768px) {
    .section {
      padding: 60px 0;
    }
    .section-head {
      flex-direction: column;
      align-items: flex-start;
      gap: 10px;
    }
    .section-title {
      font-size: 26px;
    }
    .quick-grid {
      grid-template-columns: 1fr;
      gap: 14px;
    }
    .cms-grid {
      grid-template-columns: 1fr;
    }
    .post-card {
      padding: 20px;
    }
    .form-grid {
      grid-template-columns: 1fr;
    }
    .contact-form {
      padding: 20px;
    }
    .hero-features {
      grid-template-columns: 1fr 1fr;
      gap: 12px;
    }
    .nav-wrap {
      height: 64px;
    }
    .brand-logo .logo-big {
      font-size: 24px;
      line-height: 1;
    }
    .brand-logo .logo-sub {
      font-size: 13px;
      padding-bottom: 3px;
    }
    .mobile-menu {
      top: 64px;
    }
    .mobile-menu a {
      font-size: 15px;
    }
    .section-sub {
      font-size: 15px;
      line-height: 1.8;
    }
    .compare-col {
      padding: 20px;
    }
  }
  @media screen and (max-width: 520px) {
    .container {
      width: 94%;
    }
    .hero {
      padding-top: 100px;
    }
    .hero h1 {
      font-size: 34px;
      line-height: 1.3;
    }
    .hero-btns {
      flex-direction: column;
      align-items: stretch;
    }
    .hero-btns .btn {
      width: 100%;
    }
    .hero-features {
      grid-template-columns: 1fr;
    }
    .timing-title {
      font-size: 21px;
    }
    .countdown {
      gap: 8px;
    }
    .countdown-item {
      min-width: 54px;
      padding: 10px 2px;
    }
    .countdown-item .num {
      font-size: 21px;
    }
    .countdown-item .unit {
      font-size: 11px;
    }
    .footer-bottom {
      flex-direction: column;
      text-align: center;
    }
    .footer-grid {
      grid-template-columns: 1fr;
    }
    .site-footer {
      padding: 44px 0 24px;
    }
    .btn-light, .btn-ghost, .btn-primary {
      padding: 10px 18px;
    }
  }
  @media screen and (min-width: 769px) {
    .nav-right {
      display: flex;
    }
    .nav-cta-btn {
      display: inline-flex;
    }
  }

/* roulang page: category1 */
:root {
  --font-sans: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Microsoft YaHei UI", "Noto Sans SC", sans-serif;
  --font-num: "Rajdhani", "DIN Alternate", "Bahnschrift", sans-serif;
  --bg-deep: #040914;
  --bg-main: #06101e;
  --bg-card: rgba(14, 27, 49, 0.62);
  --bg-card2: rgba(8, 18, 35, 0.72);
  --brand: #2AC6E6;
  --brand-deep: #0D7C9E;
  --brand-soft: rgba(42, 198, 230, 0.14);
  --gold: #F2B84B;
  --gold-soft: rgba(242, 184, 75, 0.16);
  --text-title: #F4F9FF;
  --text-body: #D8E5F4;
  --text-weak: #7E93AC;
  --border-line: rgba(56, 87, 126, 0.32);
  --border-brand: rgba(42, 198, 230, 0.45);
  --shadow-card: 0 14px 32px rgba(0, 0, 0, 0.28);
  --shadow-lg: 0 24px 64px rgba(0, 0, 0, 0.46);
  --r-lg: 18px;
  --r-md: 12px;
  --r-sm: 8px;
  --header-h: 78px;
  --section-gap: 96px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  background: var(--bg-main);
  color: var(--text-body);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -3;
  background:
    linear-gradient(rgba(42, 198, 230, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(42, 198, 230, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}
body::after {
  content: "";
  position: fixed;
  inset: auto 0 0 auto;
  width: 680px;
  height: 680px;
  z-index: -2;
  background: radial-gradient(circle at 100% 100%, rgba(42, 198, 230, 0.09), transparent 70%);
  pointer-events: none;
}
a {
  color: var(--brand);
  text-decoration: none;
  transition: color 0.22s ease, background 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease, opacity 0.22s ease;
}
img {
  max-width: 100%;
  display: block;
}
ul,
ol {
  list-style: none;
}
button,
input,
select,
textarea {
  font-family: inherit;
  font-size: 1rem;
}
input,
select,
textarea {
  outline: none;
}
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 3px;
}
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 clamp(18px, 4vw, 32px);
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0.74rem 1.45rem;
  border-radius: var(--r-sm);
  border: 1px solid transparent;
  font-size: 0.94rem;
  font-weight: 600;
  line-height: 1;
  text-align: center;
  cursor: pointer;
  transition: transform 0.22s var(--ease), box-shadow 0.22s var(--ease), background 0.22s var(--ease), border-color 0.22s var(--ease), color 0.22s var(--ease);
}
.btn-primary {
  background: linear-gradient(135deg, #16b7d4 0%, #0d7c9e 100%);
  color: #01222b;
  box-shadow: 0 0 20px rgba(42, 198, 230, 0.24), 0 10px 22px rgba(0, 0, 0, 0.22);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 26px rgba(42, 198, 230, 0.42), 0 16px 34px rgba(0, 0, 0, 0.28);
  color: #01222b;
  background: linear-gradient(135deg, #2ac6e6 0%, #118aa8 100%);
}
.btn-primary:active {
  transform: translateY(1px);
}
.btn-outline {
  background: rgba(9, 20, 38, 0.55);
  border: 1px solid var(--border-brand);
  color: #cbeaf5;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.02);
}
.btn-outline:hover {
  background: rgba(42, 198, 230, 0.12);
  color: #ffffff;
  border-color: #6fd9f0;
  transform: translateY(-2px);
}
.btn-outline:active {
  transform: translateY(1px);
}
.btn-light {
  display: inline-flex;
  padding: 0.72rem 1.6rem;
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: var(--r-sm);
  gap: 8px;
  font-weight: 600;
  transition: all 0.22s var(--ease);
}
.btn-light:hover {
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(255, 255, 255, 0.48);
}

/* ===== 顶部导航 ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: rgba(5, 10, 21, 0.78);
  border-bottom: 1px solid rgba(56, 87, 126, 0.24);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}
.site-header.scrolled {
  background: rgba(3, 7, 14, 0.92);
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.28);
}
.container.nav-wrap {
  display: flex;
  align-items: center;
  gap: 20px;
  min-height: var(--header-h);
}
.brand-logo {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  white-space: nowrap;
  flex-shrink: 0;
  margin-right: 8px;
}
.brand-logo .flg1 {
  font-size: 1.62rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: #fff;
  text-shadow: 0 0 14px rgba(42, 198, 230, 0.35);
}
.brand-logo .flg2 {
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--brand);
  text-transform: uppercase;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1 1 auto;
  margin-left: 14px;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 0.54rem 0.86rem;
  border-radius: 999px;
  color: var(--text-body);
  font-size: 0.93rem;
  font-weight: 500;
  line-height: 1;
  background: transparent;
  border: 1px solid transparent;
  transition: all 0.22s var(--ease);
}
.nav-link i {
  color: var(--text-weak);
  font-size: 0.88rem;
  transition: color 0.2s;
}
.nav-link:hover {
  background: rgba(42, 198, 230, 0.1);
  color: #fff;
}
.nav-link:hover i {
  color: var(--brand);
}
.nav-link.active {
  background: var(--brand-soft);
  border-color: rgba(42, 198, 230, 0.4);
  color: #fff;
  box-shadow: inset 0 0 18px rgba(42, 198, 230, 0.06);
}
.nav-link.active i {
  color: var(--brand);
}
.nav-cta {
  margin-left: auto;
  flex-shrink: 0;
  padding: 0.66rem 1.1rem;
}
.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-line);
  color: #dbeafe;
  font-size: 1.1rem;
  cursor: pointer;
  margin-left: auto;
  transition: all 0.22s var(--ease);
}
.nav-toggle:hover {
  background: rgba(42, 198, 230, 0.12);
  border-color: var(--border-brand);
}
.nav-toggle.active {
  color: var(--brand);
  border-color: var(--border-brand);
}

/* ===== Hero / 分类页首屏 ===== */
.category-hero {
  position: relative;
  padding: calc(var(--header-h) + 58px) 0 96px;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(circle at 78% 22%, rgba(42, 198, 230, 0.18), transparent 26%),
    url('/assets/images/backpic/back-2.png') center right / cover no-repeat;
  opacity: 0.9;
}
.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(4, 9, 20, 0.98) 0%, rgba(4, 11, 24, 0.86) 46%, rgba(3, 15, 28, 0.48) 100%);
}
.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 58px;
  align-items: center;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0.42rem 0.9rem;
  border-radius: 999px;
  background: rgba(42, 198, 230, 0.1);
  border: 1px solid rgba(42, 198, 230, 0.3);
  color: var(--brand);
  font-size: 0.84rem;
  letter-spacing: 0.05em;
  margin-bottom: 22px;
}
.hero-eyebrow i {
  font-size: 0.9rem;
}
.hero-title {
  font-size: clamp(2.6rem, 4.6vw, 3.6rem);
  line-height: 1.18;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-title);
}
.hero-title-aside {
  display: block;
  color: var(--brand);
  font-size: 0.42em;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-top: 12px;
  opacity: 0.82;
}
.hero-sub {
  margin: 24px 0 30px;
  font-size: clamp(1rem, 1.4vw, 1.14rem);
  line-height: 2;
  max-width: 600px;
  color: var(--text-body);
}
.hero-sub strong {
  color: #fff;
  font-weight: 600;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 34px;
  padding-top: 28px;
  border-top: 1px solid var(--border-line);
}
.hero-trust span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-body);
  font-size: 0.84rem;
}
.hero-trust i {
  color: var(--brand);
}

/* 右侧终端面板 */
.terminal-panel {
  position: relative;
  border-radius: var(--r-lg);
  border: 1px solid var(--border-brand);
  background:
    radial-gradient(circle at 86% 0%, rgba(42, 198, 230, 0.15), transparent 40%),
    rgba(4, 10, 22, 0.82);
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(255, 255, 255, 0.02) inset;
  backdrop-filter: blur(8px);
  overflow: hidden;
}
.terminal-top {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 13px 18px;
  border-bottom: 1px solid var(--border-line);
  background: rgba(4, 10, 24, 0.55);
}
.terminal-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: #4f5766;
}
.terminal-dot.one {
  background: #67c8de;
}
.terminal-dot.two {
  background: var(--gold);
}
.terminal-dot.three {
  background: #79ddb1;
}
.terminal-title {
  flex: 1;
  text-align: center;
  color: var(--text-weak);
  font-family: var(--font-num);
  font-size: 0.82rem;
  letter-spacing: 0.12em;
}
.terminal-body {
  padding: 24px;
}
.terminal-label {
  display: inline-flex;
  gap: 6px;
  color: var(--text-weak);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.terminal-status {
  margin-top: 10px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-radius: var(--r-md);
  background: rgba(42, 198, 230, 0.09);
  border: 1px solid rgba(42, 198, 230, 0.28);
}
.terminal-status i {
  font-size: 1.25rem;
  color: var(--brand);
}
.terminal-status strong {
  display: block;
  color: #fff;
  font-size: 0.96rem;
}
.terminal-status small {
  color: var(--text-weak);
  font-size: 0.78rem;
}
.entry-list {
  margin: 16px 0 18px;
  display: grid;
  gap: 10px;
}
.entry-list li {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 10px 12px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(56, 87, 126, 0.25);
  color: var(--text-body);
  font-size: 0.9rem;
}
.entry-list li i {
  color: var(--brand);
  width: 18px;
  text-align: center;
}
.entry-list .entry-go {
  margin-left: auto;
  color: var(--text-weak);
  font-size: 0.76rem;
}
.terminal-line {
  position: relative;
  height: 60px;
}
.terminal-line::before {
  content: "";
  position: absolute;
  left: 8px;
  right: 8px;
  top: 24px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(42, 198, 230, 0.5), transparent);
}
.terminal-map-icons {
  position: relative;
  display: flex;
  justify-content: space-between;
  margin-top: -6px;
}
.terminal-map-icons span {
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: #0a182c;
  border: 1px solid var(--border-brand);
  color: var(--brand);
  font-size: 0.9rem;
}

/* ===== 板块基础 ===== */
.section {
  padding: var(--section-gap) 0;
}
.section-soft {
  background: rgba(7, 15, 29, 0.44);
  border-top: 1px solid rgba(56, 87, 126, 0.18);
  border-bottom: 1px solid rgba(56, 87, 126, 0.18);
}
.section-head {
  max-width: 760px;
  margin: 0 auto 48px;
  text-align: center;
}
.section-eye {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0.36rem 0.8rem;
  border-radius: 999px;
  background: var(--brand-soft);
  border: 1px solid rgba(42, 198, 230, 0.24);
  color: var(--brand);
  font-size: 0.8rem;
  margin-bottom: 16px;
}
.section-head h2,
.section-title {
  color: var(--text-title);
  font-size: clamp(1.75rem, 2.6vw, 2.35rem);
  line-height: 1.35;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.section-head p {
  margin-top: 14px;
  color: var(--text-weak);
  font-size: 1rem;
  line-height: 1.9;
}

/* ===== 分类总览卡 ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  position: relative;
  padding: 32px 26px;
  border-radius: var(--r-lg);
  background:
    radial-gradient(140px 80px at 90% 0%, rgba(42, 198, 230, 0.08), transparent 70%),
    linear-gradient(140deg, rgba(19, 32, 57, 0.72), rgba(6, 12, 27, 0.9));
  border: 1px solid var(--border-line);
  box-shadow: var(--shadow-card);
  transition: transform 0.28s var(--ease), border-color 0.28s var(--ease), box-shadow 0.28s var(--ease);
  overflow: hidden;
}
.feature-card::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(42, 198, 230, 0.6), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-brand);
  box-shadow: 0 22px 44px rgba(0, 0, 0, 0.36), 0 0 0 1px rgba(42, 198, 230, 0.12) inset;
}
.feature-card:hover::before {
  opacity: 1;
}
.card-icon {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  background: rgba(42, 198, 230, 0.14);
  border: 1px solid rgba(42, 198, 230, 0.28);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--brand);
  margin-bottom: 24px;
}
.feature-card h3 {
  color: #fff;
  font-size: 1.18rem;
  line-height: 1.5;
  margin-bottom: 10px;
  font-weight: 700;
}
.feature-card p {
  color: #b7c9de;
  font-size: 0.92rem;
  line-height: 1.85;
}
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 18px;
  font-size: 0.88rem;
  color: var(--brand);
}
.card-link i {
  transition: transform 0.2s ease;
}
.card-link:hover i {
  transform: translateX(5px);
}

/* ===== 图文切换 / 图文模块 ===== */
.split-grid {
  display: grid;
  grid-template-columns: 0.96fr 1.04fr;
  gap: 64px;
  align-items: center;
}
.split-media {
  border-radius: var(--r-lg);
  border: 1px solid var(--border-line);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  position: relative;
}
.split-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 4 / 3.2;
}
.split-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(155deg, rgba(42, 198, 230, 0.05), transparent 60%);
  pointer-events: none;
}
.split-content .section-eye {
  margin-bottom: 12px;
}
.split-content h2 {
  color: var(--text-title);
  font-size: clamp(1.6rem, 2.3vw, 2.2rem);
  line-height: 1.4;
  margin-bottom: 18px;
  font-weight: 700;
}
.split-content p {
  color: var(--text-body);
  line-height: 2;
  margin-bottom: 16px;
}
.option-list {
  margin-top: 20px;
  display: grid;
  gap: 14px;
}
.option-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  color: #d2e2f0;
  padding: 12px 14px;
  border-radius: var(--r-md);
  background: rgba(42, 198, 230, 0.06);
  border: 1px solid rgba(42, 198, 230, 0.16);
}
.option-list i {
  color: var(--brand);
  margin-top: 4px;
}
.option-list strong {
  color: #fff;
  font-weight: 600;
}
.option-list span {
  display: block;
  font-size: 0.86rem;
  color: #a3bad3;
}

/* ===== 流程区 ===== */
.flow-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  position: relative;
}
.flow-card {
  background: rgba(9, 20, 39, 0.6);
  border: 1px solid var(--border-line);
  border-radius: var(--r-lg);
  padding: 34px 26px 28px;
  position: relative;
  transition: transform 0.25s var(--ease), border-color 0.25s ease;
}
.flow-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-brand);
}
.flow-num {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--brand);
  font-family: var(--font-num);
  font-size: 1.7rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 18px;
}
.flow-num small {
  font-size: 0.78rem;
  color: var(--text-weak);
  letter-spacing: 0.08em;
  font-weight: 500;
}
.flow-card h3 {
  color: #fff;
  font-size: 1.08rem;
  margin-bottom: 10px;
}
.flow-card p {
  color: #aabdd2;
  font-size: 0.9rem;
  line-height: 1.85;
}
.flow-connect {
  position: absolute;
  top: 54px;
  height: 1px;
  width: 24px;
  background: linear-gradient(90deg, rgba(42, 198, 230, 0.6), transparent);
}

/* ===== 数字信息卡 ===== */
.info-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 14px;
}
.stat-item {
  border-radius: var(--r-lg);
  padding: 28px;
  background: rgba(9, 18, 35, 0.74);
  border: 1px solid var(--border-line);
  display: flex;
  align-items: center;
  gap: 18px;
  box-shadow: var(--shadow-card);
}
.stat-icon {
  width: 54px;
  height: 54px;
  flex: 0 0 54px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: var(--brand-soft);
  color: var(--brand);
  border: 1px solid rgba(42, 198, 230, 0.24);
  font-size: 1.2rem;
}
.stat-item strong {
  display: block;
  color: #fff;
  font-family: var(--font-num);
  font-size: 1.72rem;
  line-height: 1.15;
  letter-spacing: 0.03em;
}
.stat-item span {
  color: #a5bbd3;
  font-size: 0.86rem;
  line-height: 1.8;
}

/* ===== FAQ 折叠区 ===== */
.faq-wrap {
  max-width: 900px;
  margin: 0 auto;
}
.faq-list {
  display: grid;
  gap: 14px;
}
.faq-item {
  background: rgba(8, 17, 34, 0.82);
  border-radius: var(--r-md);
  border: 1px solid var(--border-line);
  overflow: hidden;
  transition: border-color 0.3s ease, background 0.3s ease;
}
.faq-item[open] {
  border-color: rgba(42, 198, 230, 0.46);
  background: rgba(9, 19, 38, 0.88);
}
.faq-item summary {
  display: flex;
  align-items: center;
  gap: 14px;
  list-style: none;
  padding: 20px 24px;
  cursor: pointer;
  color: #e6f0f9;
  font-size: 1rem;
  font-weight: 600;
  transition: color 0.25s;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary i {
  color: var(--brand);
  font-size: 0.9rem;
  width: 22px;
  text-align: center;
}
.faq-item summary::after {
  content: "\f078";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  font-size: 0.8rem;
  margin-left: auto;
  color: var(--text-weak);
  transition: transform 0.25s var(--ease), color 0.25s;
}
.faq-item[open] summary::after {
  transform: rotate(180deg);
  color: var(--brand);
}
.faq-item[open] summary {
  color: #fff;
}
.faq-item .faq-answer {
  padding: 0 24px 22px 60px;
  color: #b8cadf;
  font-size: 0.92rem;
  line-height: 1.95;
}

/* ===== 底部咨询 CTA 与表单 ===== */
.contact-section {
  position: relative;
  padding: 100px 0;
  border-top: 1px solid rgba(56, 87, 126, 0.28);
  background:
    radial-gradient(600px 280px at 20% 20%, rgba(42, 198, 230, 0.12), transparent 60%),
    radial-gradient(800px 400px at 90% 90%, rgba(13, 124, 158, 0.18), transparent 70%),
    #04101e;
}
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 58px;
  align-items: center;
}
.contact-board h2 {
  color: #f3f9ff;
  font-size: clamp(1.7rem, 2.4vw, 2.1rem);
  line-height: 1.45;
  margin-bottom: 16px;
}
.contact-board p {
  color: #9fb3c8;
  line-height: 2;
  margin-bottom: 20px;
}
.contact-board .board-note {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  background: var(--brand-soft);
  border: 1px solid rgba(42, 198, 230, 0.22);
  border-radius: 999px;
  padding: 0.48rem 0.92rem;
  color: var(--brand);
  font-size: 0.78rem;
}
.contact-form-wrap {
  background: rgba(7, 15, 30, 0.82);
  border: 1px solid var(--border-line);
  border-radius: var(--r-lg);
  padding: 36px;
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(8px);
}
.contact-form-wrap .form-title {
  color: #fff;
  font-size: 1.15rem;
  margin-bottom: 24px;
  font-weight: 700;
}
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.form-group.full {
  grid-column: 1 / -1;
}
.form-group label {
  color: #a8bfd7;
  font-size: 0.82rem;
}
.form-group input,
.form-group select,
.form-group textarea {
  background: rgba(14, 27, 52, 0.74);
  border: 1px solid rgba(56, 87, 126, 0.36);
  border-radius: 10px;
  padding: 0.78rem 1rem;
  color: #f1f8ff;
  transition: border-color 0.22s, box-shadow 0.22s, background 0.22s;
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #647f9c;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  background: rgba(14, 30, 59, 0.9);
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(42, 198, 230, 0.2);
}
.form-group select option {
  background: #0b172b;
  color: #e0ecf8;
}
.contact-form-wrap .btn {
  margin-top: 20px;
}
.form-tip {
  margin-top: 16px;
  padding: 12px 16px;
  border-radius: var(--r-md);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 10px;
}
.form-tip.success {
  background: rgba(42, 198, 230, 0.12);
  border: 1px solid rgba(42, 198, 230, 0.32);
  color: #ccf1fa;
}
.form-tip.error {
  background: rgba(242, 184, 75, 0.12);
  border: 1px solid rgba(242, 184, 75, 0.32);
  color: #f7dca8;
}

/* ===== 页脚 ===== */
.site-footer {
  background: rgba(2, 6, 13, 0.96);
  border-top: 1px solid var(--border-line);
  padding-top: 72px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 0.9fr 0.9fr 0.9fr;
  gap: 45px;
  padding-bottom: 52px;
}
.footer-logo {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-bottom: 16px;
}
.footer-logo .flg1 {
  font-size: 1.85rem;
  font-weight: 800;
  color: #fff;
}
.footer-logo .flg2 {
  font-size: 0.84rem;
  letter-spacing: 0.14em;
  color: var(--brand);
}
.footer-about p {
  color: #879bb2;
  font-size: 0.9rem;
  line-height: 1.95;
  max-width: 360px;
}
.footer-col h4 {
  color: #e5eff9;
  font-size: 0.96rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 18px;
}
.footer-links {
  display: grid;
  gap: 10px;
}
.footer-links a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #8ea4ba;
  font-size: 0.88rem;
  transition: color 0.2s ease, transform 0.2s ease;
}
.footer-links a i {
  color: var(--brand);
  font-size: 0.7rem;
}
.footer-links a:hover {
  color: #fff;
  transform: translateX(4px);
}
.footer-bottom {
  border-top: 1px solid rgba(56, 87, 126, 0.24);
  padding: 22px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}
.copy {
  color: #879bb2;
  font-size: 0.84rem;
}
.copy a {
  color: #9cc7ff;
}
.footer-links-legal {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.84rem;
  color: var(--text-weak);
}
.footer-links-legal a {
  color: #879bb2;
  transition: color 0.2s;
}
.footer-links-legal a:hover {
  color: #fff;
}
.footer-links-legal span {
  opacity: 0.7;
}

/* ===== 桌面端过渡 ===== */
@media (max-width: 1150px) {
  .nav-link {
    padding: 0.52rem 0.62rem;
    font-size: 0.88rem;
  }
  .nav-menu {
    gap: 2px;
    margin-left: 8px;
  }
  .container.nav-wrap {
    gap: 12px;
  }
  .brand-logo .flg2 {
    letter-spacing: 0.1em;
  }
}

/* ===== 平板端 ===== */
@media (max-width: 991px) {
  .section {
    --section-gap: 76px;
  }
  .nav-toggle {
    display: inline-flex;
  }
  .nav-brand-gap {
    display: none;
  }
  .nav-menu {
    position: fixed;
    top: calc(var(--header-h) + 10px);
    left: 14px;
    right: 14px;
    z-index: 90;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    margin-left: 0;
    background: rgba(4, 10, 20, 0.97);
    border: 1px solid var(--border-line);
    border-radius: 16px;
    padding: 16px;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.25s var(--ease), transform 0.25s var(--ease), visibility 0.25s;
    backdrop-filter: blur(16px);
  }
  .nav-menu.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
  .nav-link {
    padding: 0.82rem 1rem;
    font-size: 1rem;
  }
  .nav-link.active {
    background: var(--brand-soft);
  }
  .nav-cta {
    display: none;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 34px;
  }
  .terminal-panel {
    max-width: 540px;
  }
  .hero-title {
    font-size: clamp(2.2rem, 5vw, 3.2rem);
  }
  .split-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .split-media img {
    aspect-ratio: 16 / 10;
  }
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 34px;
  }
  .flow-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }
  .flow-connect {
    display: none;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
  .stat-item {
    flex-direction: column;
    align-items: flex-start;
  }
  .info-stats {
    grid-template-columns: 1fr;
  }
}

/* ===== 移动端 ===== */
@media (max-width: 767px) {
  .site-header {
    height: 68px;
  }
  .container.nav-wrap {
    min-height: 68px;
  }
  :root {
    --header-h: 68px;
  }
  .category-hero {
    padding: calc(68px + 38px) 0 68px;
  }
  .brand-logo .flg1 {
    font-size: 1.36rem;
  }
  .brand-logo .flg2 {
    font-size: 0.68rem;
    letter-spacing: 0.06em;
  }
  .hero-eyebrow {
    font-size: 0.76rem;
  }
  .hero-actions {
    flex-direction: column;
    gap: 12px;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .hero-trust {
    gap: 12px;
  }
  .hero-trust span {
    font-size: 0.78rem;
  }
  .section {
    --section-gap: 62px;
  }
  .section-head {
    margin-bottom: 32px;
  }
  .card-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }
  .feature-card {
    padding: 24px 20px;
  }
  .faq-item summary {
    padding: 16px 18px;
    font-size: 0.94rem;
    line-height: 1.6;
  }
  .faq-item .faq-answer {
    padding: 0 18px 18px 46px;
    font-size: 0.88rem;
  }
  .contact-form-wrap {
    padding: 24px 18px;
  }
  .form-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .contact-section {
    padding: 70px 0;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
    padding-bottom: 34px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* ===== 小屏适配 ===== */
@media (max-width: 480px) {
  .nav-menu {
    left: 10px;
    right: 10px;
  }
  .hero-title {
    font-size: 2.1rem;
  }
  .hero-title-aside {
    font-size: 0.38em;
  }
  .terminal-panel {
    border-radius: 14px;
  }
  .terminal-body {
    padding: 18px;
  }
  .stat-item {
    padding: 22px;
  }
  .brand-logo .flg2 {
    display: block;
  }
  .card-icon {
    width: 46px;
    height: 46px;
    font-size: 1.1rem;
    margin-bottom: 18px;
  }
  .footer-links-legal {
    flex-wrap: wrap;
    justify-content: center;
  }
}

/* roulang page: article */
:root {
  --bg-deep: #020509;
  --bg-body: #060b16;
  --bg-soft: #0d1828;
  --card-bg: rgba(14, 24, 39, 0.78);
  --card-bg-solid: rgba(17, 29, 46, 0.96);
  --accent: #2AC6E6;
  --accent-deep: #0D7C9E;
  --accent-soft: rgba(42, 198, 230, 0.14);
  --gold: #F2B84B;
  --text: #EDF3FC;
  --text-soft: #C7D6E8;
  --text-weak: #7E93AC;
  --border: rgba(43, 74, 112, 0.42);
  --border-light: rgba(74, 122, 168, 0.22);
  --radius-card: 18px;
  --radius-btn: 9px;
  --radius-tag: 999px;
  --shadow-glow: 0 0 26px rgba(42, 198, 230, 0.22);
  --font: "PingFang SC", "HarmonyOS Sans SC", "MiSans", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font);
  background:
    radial-gradient(circle at 16% -10%, rgba(42, 198, 230, 0.09), transparent 28%),
    radial-gradient(circle at 85% 10%, rgba(242, 184, 75, 0.05), transparent 24%),
    var(--bg-body);
  color: var(--text);
  line-height: 1.75;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.016) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.016) 1px, transparent 1px);
  background-size: 52px 52px;
}
body > * {
  position: relative;
  z-index: 1;
}
a {
  color: var(--accent);
  text-decoration: none;
  transition: color .2s ease;
}
a:hover {
  color: #7FE3F7;
}
img {
  max-width: 100%;
}
button,
input,
textarea {
  font-family: inherit;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 clamp(16px, 4vw, 32px);
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-btn);
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform .22s ease, box-shadow .22s ease, background .22s ease, border-color .22s ease;
}
.btn-primary {
  padding: 13px 24px;
  background: linear-gradient(135deg, #32D9F2, #128BAF);
  color: #03141D;
  box-shadow: 0 0 18px rgba(42, 198, 230, 0.22);
}
.btn-primary:hover {
  transform: translateY(-2px);
  color: #03141D;
  box-shadow: 0 10px 30px rgba(42, 198, 230, 0.34);
}
.btn-primary:active {
  transform: translateY(0);
}
.btn-ghost {
  padding: 11px 20px;
  border-color: rgba(42, 198, 230, 0.46);
  background: rgba(42, 198, 230, 0.06);
  color: var(--accent);
}
.btn-ghost:hover {
  background: rgba(42, 198, 230, 0.14);
  color: #D9F7FF;
}
.btn-lg {
  padding: 16px 34px;
  font-size: 16px;
}
.btn-sm {
  padding: 10px 18px;
  font-size: 14px;
}
.btn:focus-visible,
.nav-link:focus-visible,
a:focus-visible {
  outline: 2px solid rgba(42, 198, 230, .7);
  outline-offset: 3px;
}
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 9999;
  background: var(--bg-soft);
  padding: 10px 18px;
  border-radius: 0 0 10px 0;
  color: #fff;
}
.skip-link:focus {
  left: 0;
}

/* ===== Header Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  height: 76px;
  background: rgba(4, 9, 18, 0.78);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: 20px;
}
.brand-logo {
  display: flex;
  align-items: baseline;
  gap: 5px;
  white-space: nowrap;
  flex-shrink: 0;
}
.brand-logo:hover {
  color: inherit;
}
.logo-main {
  font-size: 27px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 1px;
}
.logo-sub {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 3px;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: auto;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-soft);
  font-size: 14.5px;
  font-weight: 500;
  padding: 9px 15px;
  border-radius: var(--radius-tag);
  border: 1px solid transparent;
  white-space: nowrap;
}
.nav-link i {
  color: var(--text-weak);
  font-size: 13px;
}
.nav-link:hover {
  color: var(--accent);
  background: rgba(42, 198, 230, 0.08);
}
.nav-link.active {
  color: #7BE9FC;
  background: rgba(42, 198, 230, 0.12);
  border-color: rgba(42, 198, 230, 0.24);
  box-shadow: inset 0 0 0 1px rgba(42, 198, 230, .08), 0 0 20px rgba(42, 198, 230, .06);
}
.nav-link.active i {
  color: var(--accent);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: 14px;
}
.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  font-size: 14px;
}
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: rgba(42, 198, 230, .08);
  border: 1px solid rgba(42, 198, 230, .2);
  color: var(--accent);
  font-size: 18px;
  cursor: pointer;
}
.nav-toggle:hover {
  background: rgba(42, 198, 230, .16);
}
@media (max-width: 1100px) {
  .header-cta {
    display: none;
  }
}
@media (max-width: 1023px) {
  .nav-toggle {
    display: inline-flex;
  }
  .nav-menu {
    position: fixed;
    top: 76px;
    right: 0;
    bottom: 0;
    width: min(350px, 84vw);
    margin-left: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 22px 14px;
    background: rgba(5, 11, 21, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-left: 1px solid var(--border);
    box-shadow: -24px 0 50px rgba(0, 0, 0, .4);
    transform: translateX(100%);
    opacity: 0;
    visibility: hidden;
    transition: transform .28s ease, opacity .28s ease, visibility .28s ease;
    overflow-y: auto;
  }
  .site-header.nav-open .nav-menu {
    transform: none;
    opacity: 1;
    visibility: visible;
  }
  .nav-link {
    padding: 13px 18px;
    font-size: 15px;
    border-radius: 14px;
  }
  .header-inner {
    gap: 12px;
  }
}
@media (max-width: 520px) {
  .logo-main {
    font-size: 23px;
  }
  .logo-sub {
    font-size: 12px;
    letter-spacing: 2px;
  }
  .header-cta {
    display: none;
  }
}

/* ===== Post Hero ===== */
.post-hero {
  position: relative;
  border-bottom: 1px solid var(--border);
  background:
    linear-gradient(rgba(3, 7, 14, 0.6), rgba(5, 11, 21, 0.84)),
    url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  padding: 52px 0 44px;
}
.post-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 18% 30%, rgba(42, 198, 230, 0.12), transparent 30%);
  pointer-events: none;
}
.post-hero .container {
  position: relative;
  z-index: 2;
}
.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  color: var(--text-weak);
  font-size: 13.5px;
  margin-bottom: 26px;
}
.crumbs a {
  color: var(--text-soft);
}
.crumbs a:hover {
  color: var(--accent);
}
.crumbs i {
  font-size: 11px;
  color: var(--text-weak);
  opacity: .6;
}
.crumb-current {
  color: var(--accent);
  max-width: 260px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.hero-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(42, 198, 230, 0.1);
  border: 1px solid rgba(42, 198, 230, 0.2);
  border-radius: var(--radius-tag);
  padding: 5px 14px;
  color: #8DEAFC;
  font-size: 13px;
  letter-spacing: 1px;
  margin-bottom: 18px;
}
.article-title {
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.22;
  color: #fff;
  font-weight: 800;
  letter-spacing: .2px;
  max-width: 940px;
  margin-bottom: 14px;
}
.post-hero-sub {
  color: var(--text-soft);
  font-size: 16px;
  max-width: 760px;
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
  color: var(--text-weak);
  font-size: 14px;
  margin-top: 14px;
}
.hero-meta i {
  color: var(--accent);
  margin-right: 6px;
  opacity: .8;
}
.hero-meta .meta-cat {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--gold);
  background: rgba(242, 184, 75, 0.09);
  border: 1px solid rgba(242, 184, 75, 0.2);
  padding: 3px 11px;
  border-radius: var(--radius-tag);
  font-size: 13px;
}
@media (max-width: 767px) {
  .post-hero {
    padding: 34px 0 30px;
  }
  .crumbs {
    margin-bottom: 18px;
  }
}

/* ===== Article Main ===== */
.page-main {
  padding: 42px 0 20px;
}
.article-layout {
  max-width: 960px;
}
.article-shell {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: clamp(24px, 5vw, 52px) clamp(20px, 5vw, 58px);
  backdrop-filter: blur(12px);
  box-shadow: 0 30px 70px rgba(0, 0, 0, .18);
}
.article-entry {
  font-size: 17px;
  line-height: 1.95;
  color: #D9E6F5;
}
.article-entry p {
  margin-bottom: 1.25em;
}
.article-entry h2 {
  font-size: 27px;
  line-height: 1.4;
  color: #F4F8FF;
  margin: 1.8em 0 .9em;
  padding-left: 16px;
  border-left: 3px solid var(--accent);
}
.article-entry h3 {
  font-size: 20px;
  color: rgba(255, 255, 255, .94);
  margin: 1.5em 0 .7em;
}
.article-entry h4 {
  font-size: 17px;
  color: rgba(255, 255, 255, .92);
  margin: 1.3em 0 .6em;
}
.article-entry a {
  color: #50D6EE;
  border-bottom: 1px solid rgba(80, 214, 238, .4);
}
.article-entry a:hover {
  color: #A2F2FF;
  border-color: rgba(162, 242, 255, .6);
}
.article-entry strong {
  color: #fff;
  font-weight: 700;
}
.article-entry ul,
.article-entry ol {
  margin: 1.2em 0 1.4em 1.5em;
}
.article-entry li {
  padding-left: 4px;
  margin-bottom: .45em;
}
.article-entry li::marker {
  color: var(--accent);
}
.article-entry img {
  border-radius: 16px;
  margin: 30px auto;
  display: block;
  border: 1px solid var(--border);
}
.article-entry blockquote {
  margin: 32px 0;
  padding: 18px 24px;
  border-left: 4px solid var(--gold);
  background: rgba(242, 184, 75, 0.07);
  border-radius: 0 14px 14px 0;
  color: #E4EAF3;
  font-style: normal;
}
.article-entry blockquote p {
  margin-bottom: .4em;
}
.article-entry hr {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
  margin: 40px 0;
}
.article-entry table {
  display: block;
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 15px;
  white-space: nowrap;
}
.article-entry thead th {
  background: rgba(42, 198, 230, .12);
  color: #E9F6FF;
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  border-bottom: 1px solid var(--border);
}
.article-entry td {
  padding: 11px 16px;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-soft);
  background: rgba(4, 10, 20, .16);
}
.article-entry pre {
  background: #01060E;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 22px;
  overflow-x: auto;
  margin: 28px 0;
  line-height: 1.7;
}
.article-entry code {
  font-family: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
  background: rgba(42, 198, 230, 0.12);
  border-radius: 6px;
  padding: 2px 7px;
  color: #7FE3F7;
  font-size: .9em;
}
.article-entry pre code {
  background: transparent;
  color: #BBE7F5;
  padding: 0;
}
.article-cta-bar {
  margin-top: 48px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.cta-bar-text {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-soft);
  font-size: 14.5px;
}
.cta-bar-text i {
  color: var(--gold);
  font-size: 22px;
}
.cta-bar-text strong {
  color: #fff;
  font-weight: 600;
  display: block;
  font-size: 15.5px;
}
@media (max-width: 767px) {
  .page-main {
    padding: 26px 0 20px;
  }
  .article-cta-bar {
    flex-direction: column;
    align-items: flex-start;
  }
  .article-entry {
    font-size: 16.5px;
    line-height: 1.85;
  }
}

/* ===== Related ===== */
.related-section {
  padding: 46px 0 70px;
}
.related-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 26px;
}
.section-kicker {
  display: block;
  font-size: 13px;
  color: var(--accent);
  letter-spacing: 3px;
  margin-bottom: 6px;
  font-weight: 600;
}
.related-head h2,
.section-title {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 800;
  color: #F5F8FE;
  line-height: 1.3;
}
.text-link {
  color: var(--accent);
  font-size: 14.5px;
  font-weight: 600;
}
.text-link i {
  margin-left: 6px;
  font-size: 12px;
  transition: transform .2s ease;
}
.text-link:hover i {
  transform: translateX(4px);
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 250px;
  padding: 28px;
  border-radius: var(--radius-card);
  overflow: hidden;
  position: relative;
  color: var(--text);
  background: transparent;
  border: 1px solid var(--border);
  transition: transform .26s ease, box-shadow .26s ease, border-color .26s ease;
}
.related-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(4, 10, 20, 0.02), rgba(4, 10, 20, .88) 78%);
  z-index: 1;
}
.related-card-cover {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .55;
  z-index: 0;
}
.related-card:hover {
  transform: translateY(-6px);
  border-color: rgba(42, 198, 230, .5);
  box-shadow: 0 20px 46px rgba(0, 0, 0, .42);
}
.related-card:hover .related-card-cover {
  opacity: .72;
}
.related-card-content {
  position: relative;
  z-index: 2;
}
.related-tag {
  display: inline-block;
  font-size: 12.5px;
  color: var(--gold);
  background: rgba(242, 184, 75, .12);
  border: 1px solid rgba(242, 184, 75, .24);
  padding: 3px 12px;
  border-radius: var(--radius-tag);
  margin-bottom: 14px;
}
.related-card h3 {
  font-size: 19px;
  line-height: 1.45;
  color: #fff;
  margin-bottom: 8px;
}
.related-card p {
  color: rgba(222, 234, 245, .86);
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 14px;
}
.related-more {
  color: #8DEAFC;
  font-size: 13.5px;
  font-weight: 600;
}
.related-more i {
  font-size: 11px;
  margin-left: 6px;
}
@media (max-width: 900px) {
  .related-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 620px) {
  .related-grid {
    grid-template-columns: 1fr;
  }
  .related-section {
    padding: 30px 0 52px;
  }
}

/* ===== Not Found ===== */
.notfound-main {
  min-height: 260px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-bottom: 52px;
}
.notfound-card {
  text-align: center;
  background: rgba(9, 17, 28, .72);
  border: 1px dashed var(--border);
  border-radius: 18px;
  padding: 54px 32px;
  width: min(560px, 100%);
}
.notfound-card i {
  display: block;
  font-size: 46px;
  color: var(--accent);
  opacity: .5;
  margin-bottom: 16px;
}
.notfound-card h2 {
  font-size: 20px;
  color: #fff;
  margin-bottom: 10px;
}
.notfound-card p {
  color: var(--text-weak);
  font-size: 14.5px;
  margin-bottom: 22px;
}
.notfound-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== Footer ===== */
.site-footer {
  border-top: 1px solid var(--border);
  background:
    radial-gradient(circle at 10% 0%, rgba(42, 198, 230, 0.06), transparent 24%),
    rgba(2, 6, 12, .88);
  color: var(--text-soft);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr 1fr;
  gap: 42px;
  padding: 58px 0 30px;
}
.footer-logo {
  display: flex;
  align-items: baseline;
  gap: 5px;
  margin-bottom: 15px;
}
.flg1 {
  font-size: 25px;
  font-weight: 800;
  color: #fff;
  line-height: 1;
}
.flg2 {
  font-size: 13px;
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 2px;
}
.footer-about p {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-weak);
  max-width: 360px;
}
.footer-col h4 {
  color: #F0F6FF;
  font-size: 15.5px;
  font-weight: 700;
  margin-bottom: 14px;
}
.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 9px;
}
.footer-links li {
  font-size: 14px;
}
.footer-links a {
  color: var(--text-weak);
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.footer-links a i {
  font-size: 11px;
  color: var(--accent);
  opacity: .7;
}
.footer-links a:hover {
  color: #8DEAFC;
}
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-top: 1px solid rgba(43, 74, 112, .3);
  padding: 22px 0 26px;
  font-size: 13px;
  color: var(--text-weak);
}
.footer-links-legal {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}
.footer-links-legal a {
  color: var(--text-weak);
}
.footer-links-legal a:hover {
  color: var(--accent);
}
@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    padding-top: 46px;
  }
}
@media (max-width: 620px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 26px;
  }
  .footer-bottom {
    flex-direction: column;
    justify-content: center;
    text-align: center;
  }
}

/* roulang page: category2 */
:root {
      --bg-deep: #020509;
      --bg-sec: #08101e;
      --bg-card: rgba(12, 22, 36, 0.68);
      --bg-card-light: rgba(18, 32, 52, 0.72);
      --primary: #2AC6E6;
      --primary-deep: #0D7C9E;
      --accent: #F2B84B;
      --text-light: #EDF3FC;
      --text-soft: #A5B9CF;
      --text-weak: #7E93AC;
      --border: rgba(115, 160, 204, 0.18);
      --border-bright: rgba(79, 153, 214, 0.3);
      --radius-lg: 18px;
      --radius-md: 12px;
      --radius-sm: 8px;
      --shadow-card: 0 20px 44px rgba(0, 0, 0, 0.24);
      --font-cn: "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
      --font-num: "Bahnschrift", "DIN Alternate", "Roboto Mono", monospace;
    }

    *,
    *::before,
    *::after {
      box-sizing: border-box;
      padding: 0;
      margin: 0;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-cn);
      background: var(--bg-deep);
      color: var(--text-light);
      line-height: 1.8;
      min-height: 100vh;
      overflow-x: hidden;
    }

    body::before {
      content: "";
      position: fixed;
      inset: 0;
      z-index: -3;
      background:
        radial-gradient(circle at 82% -10%, rgba(42, 198, 230, 0.08), transparent 38%),
        radial-gradient(circle at 12% 78%, rgba(13, 124, 158, 0.1), transparent 32%),
        var(--bg-deep);
      pointer-events: none;
    }

    body::after {
      content: "";
      position: fixed;
      inset: 0;
      z-index: -2;
      opacity: 0.28;
      pointer-events: none;
      background-image:
        linear-gradient(rgba(76, 111, 152, 0.16) 1px, transparent 1px),
        linear-gradient(90deg, rgba(76, 111, 152, 0.12) 1px, transparent 1px);
      background-size: 52px 52px;
      mask-image: radial-gradient(circle at 50% 30%, black 0%, transparent 84%);
    }

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

    a {
      color: var(--primary);
      text-decoration: none;
      transition: color 0.25s ease;
    }

    a:hover {
      color: #9de9f7;
    }

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

    button {
      border: 0;
      background: transparent;
      cursor: pointer;
    }

    ul,
    ol {
      list-style: none;
    }

    :focus-visible {
      outline: 2px solid var(--primary);
      outline-offset: 4px;
      border-radius: 6px;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    .section {
      padding: 96px 0;
      scroll-margin-top: 110px;
    }

    .section-inline {
      padding: 72px 0;
      scroll-margin-top: 110px;
    }

    .sec-head {
      max-width: 860px;
      margin-bottom: 52px;
    }

    .sec-head.center {
      margin-inline: auto;
      text-align: center;
    }

    .sec-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--accent);
      font-size: 13px;
      letter-spacing: 0.16em;
      margin-bottom: 14px;
      text-transform: uppercase;
    }

    .sec-kicker::after {
      content: "";
      width: 30px;
      height: 1px;
      background: rgba(242, 184, 75, 0.6);
      display: inline-block;
    }

    .sec-title {
      font-size: clamp(30px, 4vw, 42px);
      line-height: 1.22;
      letter-spacing: 0.02em;
      color: #FFFFFF;
      margin-bottom: 16px;
    }

    .sec-desc {
      color: var(--text-soft);
      font-size: 16px;
      max-width: 780px;
    }

    .sec-head.center .sec-desc {
      margin-inline: auto;
    }

    .glass-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      backdrop-filter: blur(12px);
      box-shadow: var(--shadow-card);
      transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
    }

    .glass-card:hover {
      transform: translateY(-4px);
      border-color: var(--border-bright);
      box-shadow: 0 24px 52px rgba(0, 0, 0, 0.34);
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 11px 22px;
      border-radius: 999px;
      font-size: 15px;
      line-height: 1.2;
      border: 1px solid transparent;
      transition: all 0.28s ease;
      white-space: nowrap;
    }

    .btn i {
      font-size: 14px;
    }

    .btn-primary {
      background: linear-gradient(180deg, #16B7D4, #0D7C9E);
      color: #FFFFFF;
      box-shadow: 0 0 0 1px rgba(42, 198, 230, 0.18), 0 8px 22px rgba(42, 198, 230, 0.12);
    }

    .btn-primary:hover {
      background: linear-gradient(180deg, #2AC6E6, #1598B5);
      color: #FFFFFF;
      transform: translateY(-2px);
      box-shadow: 0 0 0 1px rgba(42, 198, 230, 0.3), 0 12px 28px rgba(42, 198, 230, 0.2);
    }

    .btn-outline {
      border-color: rgba(129, 183, 232, 0.45);
      color: var(--text-light);
      background: rgba(10, 22, 38, 0.35);
      backdrop-filter: blur(8px);
    }

    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: rgba(42, 198, 230, 0.08);
      transform: translateY(-2px);
    }

    .btn-block {
      width: 100%;
    }

    .btn-sm {
      padding: 8px 16px;
      font-size: 14px;
    }

    .btn:active {
      transform: translateY(1px);
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 120;
      background: rgba(4, 9, 18, 0.74);
      backdrop-filter: blur(20px);
      border-bottom: 1px solid rgba(115, 160, 204, 0.13);
      transition: background 0.35s ease, box-shadow 0.35s ease;
    }

    .site-header.is-scrolled {
      background: rgba(2, 5, 10, 0.86);
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.22);
    }

    .header-inner {
      display: flex;
      align-items: center;
      gap: 16px;
      min-height: 78px;
      position: relative;
    }

    .brand-logo {
      display: flex;
      align-items: baseline;
      gap: 6px;
      flex-shrink: 0;
      margin-right: 12px;
    }

    .brand-link {
      display: flex;
      align-items: baseline;
      gap: 5px;
      color: #FFFFFF;
    }

    .brand-main {
      font-size: 26px;
      font-weight: 800;
      letter-spacing: 0.03em;
      color: #FFFFFF;
    }

    .brand-sub {
      font-size: 18px;
      font-weight: 600;
      color: var(--primary);
      letter-spacing: 0.1em;
    }

    .nav-menu {
      display: flex;
      align-items: center;
      gap: 2px;
      margin-inline: auto;
    }

    .nav-link {
      padding: 9px 16px;
      border-radius: 999px;
      color: #B9CCE2;
      font-size: 15px;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      border: 1px solid transparent;
      transition: background 0.22s ease, color 0.22s ease, box-shadow 0.22s ease;
    }

    .nav-link i {
      font-size: 13px;
      color: var(--text-weak);
      transition: color 0.22s ease;
    }

    .nav-link:hover {
      background: rgba(42, 198, 230, 0.08);
      color: #FFFFFF;
    }

    .nav-link:hover i {
      color: var(--primary);
    }

    .nav-link.active {
      color: #FFFFFF;
      background: rgba(42, 198, 230, 0.12);
      border-color: rgba(42, 198, 230, 0.22);
      box-shadow: inset 0 0 18px rgba(42, 198, 230, 0.06);
    }

    .nav-link.active i {
      color: var(--primary);
    }

    .header-cta {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-left: 4px;
    }

    .menu-toggle {
      display: none;
      width: 44px;
      height: 44px;
      align-items: center;
      justify-content: center;
      border-radius: 12px;
      border: 1px solid var(--border);
      color: var(--text-light);
      background: rgba(42, 198, 230, 0.05);
      font-size: 18px;
      transition: border-color 0.22s ease;
    }

    .menu-toggle:hover {
      border-color: var(--primary);
    }

    .page-hero {
      position: relative;
      min-height: 620px;
      display: flex;
      align-items: center;
      padding: 96px 0 84px;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center right;
      isolation: isolate;
      overflow: hidden;
    }

    .page-hero::before {
      content: "";
      position: absolute;
      inset: 0;
      z-index: -1;
      background: linear-gradient(90deg, rgba(2, 6, 12, 0.97) 0%, rgba(3, 10, 20, 0.85) 46%, rgba(3, 12, 22, 0.55) 100%);
    }

    .page-hero::after {
      content: "";
      position: absolute;
      right: -8%;
      bottom: -20%;
      width: 440px;
      height: 440px;
      z-index: -1;
      background: radial-gradient(circle, rgba(42, 198, 230, 0.2), transparent 68%);
      filter: blur(10px);
    }

    .hero-breadcrumb {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      align-items: center;
      font-size: 14px;
      color: var(--text-soft);
      margin-bottom: 26px;
    }

    .hero-breadcrumb a {
      color: var(--text-soft);
    }

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

    .hero-breadcrumb i {
      font-size: 10px;
      color: var(--text-weak);
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 16px;
      border-radius: 999px;
      background: rgba(42, 198, 230, 0.1);
      border: 1px solid rgba(42, 198, 230, 0.18);
      color: var(--primary);
      font-size: 13px;
      margin-bottom: 20px;
    }

    .page-hero h1 {
      color: #FFFFFF;
      font-size: clamp(34px, 5vw, 58px);
      line-height: 1.18;
      font-weight: 800;
      letter-spacing: 0.01em;
      margin-bottom: 22px;
      max-width: 720px;
    }

    .page-hero h1 .hero-tail {
      display: block;
      margin-top: 10px;
      background: linear-gradient(90deg, var(--primary), #96e6ff);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }

    .hero-lead {
      font-size: 18px;
      line-height: 1.9;
      color: var(--text-soft);
      max-width: 620px;
      margin-bottom: 32px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
    }

    .hero-trust {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(150px, max-content));
      gap: 14px 30px;
      margin-top: 44px;
    }

    .hero-trust span {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      color: #AABDD3;
    }

    .hero-trust span i {
      color: var(--primary);
      font-size: 13px;
    }

    .overall-row {
      display: grid;
      grid-template-columns: minmax(0, 1.25fr) minmax(300px, 0.9fr);
      gap: 24px;
      align-items: stretch;
    }

    .overall-article {
      padding: 38px 36px;
      backdrop-filter: blur(14px);
    }

    .overall-article h2,
    .panel-box h2 {
      font-size: 24px;
      color: #FFFFFF;
      line-height: 1.4;
      margin-bottom: 18px;
    }

    .overall-article p + p {
      margin-top: 18px;
    }

    .overall-article p {
      color: var(--text-soft);
    }

    .overall-points {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 26px;
    }

    .overall-points li {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      padding: 7px 14px;
      border-radius: 999px;
      background: rgba(42, 198, 230, 0.07);
      border: 1px solid rgba(42, 198, 230, 0.12);
      color: #C9DCEB;
      font-size: 14px;
    }

    .overall-points i {
      color: var(--primary);
      font-size: 13px;
    }

    .panel-box {
      padding: 30px 28px;
      backdrop-filter: blur(14px);
    }

    .panel-box h2 {
      font-size: 21px;
      margin-bottom: 14px;
    }

    .panel-box p {
      font-size: 15px;
      color: var(--text-weak);
      margin-bottom: 22px;
    }

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

    .map-list li {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 16px;
      padding: 12px 0;
      border-bottom: 1px solid rgba(115, 160, 204, 0.12);
      font-size: 15px;
    }

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

    .map-list .map-label {
      color: var(--text-light);
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .map-list .map-label i {
      color: var(--accent);
      font-size: 14px;
      width: 18px;
      text-align: center;
    }

    .map-list .map-desc {
      color: var(--text-weak);
      font-size: 14px;
      text-align: right;
      white-space: nowrap;
    }

    .feature-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .feature-card {
      padding: 30px 26px;
      position: relative;
      overflow: hidden;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .feature-card.no-hover:hover {
      transform: none;
    }

    .feature-card::before {
      content: "";
      position: absolute;
      top: 0;
      right: 0;
      width: 120px;
      height: 120px;
      border-radius: 0 0 0 100%;
      background: radial-gradient(circle at top right, rgba(42, 198, 230, 0.15), transparent 70%);
      pointer-events: none;
    }

    .feature-icon {
      width: 48px;
      height: 48px;
      display: grid;
      place-items: center;
      border-radius: 14px;
      font-size: 21px;
      color: var(--primary);
      background: linear-gradient(160deg, rgba(42, 198, 230, 0.2), rgba(42, 198, 230, 0.04));
      border: 1px solid rgba(42, 198, 230, 0.2);
      margin-bottom: 6px;
    }

    .feature-card h3 {
      font-size: 20px;
      color: #FFFFFF;
      line-height: 1.35;
    }

    .feature-card p {
      color: var(--text-soft);
      font-size: 15px;
      line-height: 1.75;
      flex: 1;
    }

    .feature-card .feature-index {
      font-family: var(--font-num);
      font-size: 40px;
      font-weight: 700;
      color: transparent;
      -webkit-text-stroke: 1px rgba(42, 198, 230, 0.32);
      line-height: 1;
      position: absolute;
      bottom: 16px;
      right: 18px;
    }

    .split-row {
      display: grid;
      grid-template-columns: 1fr 1.1fr;
      gap: 34px;
      align-items: center;
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-card);
      overflow: hidden;
      backdrop-filter: blur(8px);
    }

    .split-row.reverse .visual-wrap {
      order: 2;
    }

    .visual-wrap {
      min-height: 300px;
      overflow: hidden;
      position: relative;
    }

    .visual-wrap img {
      width: 100%;
      height: 100%;
      min-height: 300px;
      object-fit: cover;
    }

    .visual-wrap::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(105deg, rgba(7, 16, 29, 0.9), rgba(7, 16, 29, 0.2) 52%, rgba(42, 198, 230, 0.1));
      pointer-events: none;
    }

    .split-content {
      padding: 42px 36px;
    }

    .split-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      color: var(--primary);
      background: rgba(42, 198, 230, 0.08);
      border: 1px solid rgba(42, 198, 230, 0.18);
      padding: 6px 14px;
      border-radius: 999px;
      margin-bottom: 18px;
    }

    .split-content h3 {
      font-size: 27px;
      color: #FFFFFF;
      margin-bottom: 15px;
      line-height: 1.3;
    }

    .split-content p {
      color: var(--text-soft);
      margin-bottom: 16px;
    }

    .split-content ul li {
      position: relative;
      padding-left: 24px;
      margin: 8px 0;
      color: #C6D7E7;
      font-size: 15px;
    }

    .split-content ul li::before {
      content: "\f00c";
      font-family: "Font Awesome 6 Free";
      font-weight: 900;
      position: absolute;
      left: 0;
      top: 0;
      color: var(--primary);
      font-size: 12px;
    }

    .text-link {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      color: var(--primary);
      font-weight: 600;
      margin-top: 16px;
      font-size: 15px;
    }

    .text-link i {
      transition: transform 0.2s ease;
    }

    .text-link:hover i {
      transform: translateX(4px);
    }

    .steps-section {
      position: relative;
      isolation: isolate;
      background-image:
        linear-gradient(180deg, rgba(2, 6, 12, 0.94), rgba(6, 15, 28, 0.94)),
        url('/assets/images/backpic/back-2.png');
      background-size: cover;
      background-position: center;
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
    }

    .steps-section::before {
      content: "";
      position: absolute;
      inset: 0;
      z-index: -1;
      background: radial-gradient(circle at 80% 30%, rgba(242, 184, 75, 0.06), transparent 32%),
        radial-gradient(circle at 8% 70%, rgba(42, 198, 230, 0.07), transparent 38%);
    }

    .steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      margin-top: 44px;
    }

    .step-card {
      position: relative;
      padding: 32px 24px 28px;
      background: rgba(9, 19, 34, 0.62);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      backdrop-filter: blur(8px);
      min-height: 230px;
    }

    .step-card .step-no {
      font-family: var(--font-num);
      font-size: 36px;
      font-weight: 700;
      color: transparent;
      -webkit-text-stroke: 1px rgba(42, 198, 230, 0.5);
      line-height: 1;
      margin-bottom: 16px;
    }

    .step-card h3 {
      color: #FFFFFF;
      font-size: 20px;
      margin-bottom: 12px;
    }

    .step-card p {
      color: var(--text-soft);
      font-size: 14.5px;
      line-height: 1.7;
    }

    .step-card::after {
      content: "\f061";
      font-family: "Font Awesome 6 Free";
      font-weight: 900;
      position: absolute;
      top: 34px;
      right: 22px;
      color: rgba(42, 198, 230, 0.5);
      font-size: 12px;
    }

    .step-card:last-child::after {
      content: "\f058";
    }

    .link-place-line {
      margin-top: 34px;
      display: flex;
      justify-content: flex-end;
    }

    .faq-section {
      background: linear-gradient(180deg, rgba(10, 19, 34, 0.58), rgba(2, 6, 12, 0.8));
    }

    .faq-wrap {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background: rgba(10, 21, 36, 0.68);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      margin-bottom: 14px;
      overflow: hidden;
      transition: border-color 0.24s ease, background 0.24s ease;
    }

    .faq-item.is-open {
      border-color: rgba(42, 198, 230, 0.3);
      background: rgba(11, 25, 43, 0.76);
    }

    .faq-question {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 20px 24px;
      text-align: left;
      background: transparent;
      color: var(--text-light);
      font-size: 16px;
      font-weight: 600;
      line-height: 1.5;
      cursor: pointer;
      transition: color 0.24s ease;
    }

    .faq-question:hover {
      color: #FFFFFF;
    }

    .faq-icon {
      width: 28px;
      height: 28px;
      flex-shrink: 0;
      display: grid;
      place-items: center;
      border-radius: 50%;
      border: 1px solid rgba(42, 198, 230, 0.3);
      color: var(--primary);
      font-size: 12px;
      transition: transform 0.25s ease, background 0.25s ease;
    }

    .faq-item.is-open .faq-icon {
      transform: rotate(45deg);
      background: rgba(42, 198, 230, 0.12);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
      color: var(--text-soft);
    }

    .faq-item.is-open .faq-answer {
      max-height: 520px;
    }

    .faq-answer-inner {
      padding: 0 24px 22px 24px;
      font-size: 15px;
      line-height: 1.85;
    }

    .form-section {
      background:
        radial-gradient(circle at 85% 15%, rgba(42, 198, 230, 0.08), transparent 30%),
        linear-gradient(180deg, rgba(6, 14, 26, 0.6), rgba(2, 6, 12, 0.95));
      padding: 100px 0 80px;
      scroll-margin-top: 110px;
    }

    .form-layout {
      display: grid;
      grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
      gap: 54px;
      align-items: start;
    }

    .form-intro h2 {
      color: #FFFFFF;
      font-size: clamp(28px, 3.6vw, 42px);
      line-height: 1.3;
      margin-bottom: 18px;
    }

    .form-intro p {
      color: var(--text-soft);
      font-size: 16px;
      max-width: 520px;
    }

    .form-note {
      display: flex;
      gap: 12px;
      margin-top: 26px;
      padding: 16px 18px;
      border: 1px solid rgba(242, 184, 75, 0.18);
      border-radius: var(--radius-md);
      background: rgba(242, 184, 75, 0.05);
      color: #CBB58D;
      font-size: 14px;
    }

    .form-note i {
      color: var(--accent);
      font-size: 16px;
      margin-top: 3px;
    }

    .consult-card {
      padding: 32px;
      border-radius: var(--radius-lg);
      background: rgba(10, 22, 37, 0.78);
      border: 1px solid var(--border);
      backdrop-filter: blur(14px);
      box-shadow: var(--shadow-card);
    }

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

    .form-field {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .form-field.full {
      grid-column: 1 / -1;
    }

    .form-field label {
      font-size: 14px;
      color: #AFC6DD;
      font-weight: 500;
    }

    .form-control {
      border-radius: 10px;
      border: 1px solid rgba(115, 160, 204, 0.28);
      background: rgba(3, 9, 18, 0.72);
      padding: 12px 15px;
      font-size: 15px;
      color: #FFFFFF;
      transition: border-color 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
      width: 100%;
    }

    .form-control::placeholder {
      color: #6D829A;
    }

    .form-control:focus {
      outline: none;
      border-color: var(--primary);
      background: rgba(3, 11, 22, 0.9);
      box-shadow: 0 0 0 3px rgba(42, 198, 230, 0.2);
    }

    select.form-control {
      appearance: none;
      background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath fill='none' stroke='%232AC6E6' stroke-width='1.5' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
      background-repeat: no-repeat;
      background-position: right 14px center;
      padding-right: 38px;
    }

    textarea.form-control {
      min-height: 90px;
      resize: vertical;
    }

    .form-submit {
      margin-top: 20px;
    }

    .consult-privacy {
      margin-top: 16px;
      font-size: 13px;
      color: var(--text-weak);
      text-align: center;
    }

    .site-footer {
      background: #04070d;
      padding: 64px 0 28px;
      border-top: 1px solid rgba(115, 160, 204, 0.2);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.2fr 1fr 1fr 1fr;
      gap: 40px;
      padding-bottom: 36px;
      border-bottom: 1px solid rgba(115, 160, 204, 0.15);
    }

    .footer-logo {
      display: flex;
      align-items: baseline;
      gap: 6px;
      margin-bottom: 18px;
    }

    .footer-logo .flg1 {
      color: #FFFFFF;
      font-size: 25px;
      font-weight: 800;
    }

    .footer-logo .flg2 {
      color: var(--primary);
      font-size: 17px;
      font-weight: 600;
    }

    .footer-about p {
      color: var(--text-weak);
      font-size: 14px;
      line-height: 1.8;
      max-width: 340px;
    }

    .footer-col h4 {
      color: #FFFFFF;
      font-size: 16px;
      margin-bottom: 16px;
      font-weight: 600;
    }

    .footer-links li {
      margin-bottom: 10px;
    }

    .footer-links a {
      color: var(--text-soft);
      font-size: 14px;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      transition: color 0.2s ease, padding-left 0.2s ease;
    }

    .footer-links a i {
      font-size: 12px;
      color: var(--text-weak);
      transition: color 0.2s ease;
    }

    .footer-links a:hover {
      color: var(--primary);
      padding-left: 4px;
    }

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

    .footer-bottom {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 18px;
      padding-top: 24px;
    }

    .copy {
      color: var(--text-weak);
      font-size: 13px;
      line-height: 1.8;
    }

    .footer-links-legal {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 12px;
      font-size: 13px;
      color: var(--text-weak);
    }

    .footer-links-legal a {
      color: var(--text-soft);
    }

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

    #faq,
    #contactForm {
      scroll-margin-top: 120px;
    }

    @media (max-width: 1199px) {
      .feature-grid {
        grid-template-columns: repeat(3, 1fr);
      }

      .steps-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 18px;
      }
    }

    @media (max-width: 991px) {
      .section {
        padding: 78px 0;
      }

      .overall-row {
        grid-template-columns: 1fr;
      }

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

      .split-row {
        grid-template-columns: 1fr;
      }

      .split-row.reverse .visual-wrap {
        order: unset;
      }

      .form-layout {
        grid-template-columns: 1fr;
        gap: 40px;
      }

      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
      }

      .menu-toggle {
        display: inline-flex;
      }

      .header-inner {
        flex-wrap: wrap;
        min-height: 68px;
        padding-top: 8px;
        padding-bottom: 8px;
      }

      .header-cta {
        margin-left: auto;
      }

      .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 6px;
        padding: 16px 20px 22px;
        background: rgba(3, 7, 15, 0.98);
        border-bottom: 1px solid var(--border);
        box-shadow: 0 18px 36px rgba(0, 0, 0, 0.6);
      }

      .nav-link {
        padding: 13px 16px;
        font-size: 15px;
        border-radius: 12px;
      }

      .mobile-arrow {
        transform: rotate(90deg);
      }

      .header-cta .btn-sm {
        padding: 8px 14px;
        font-size: 14px;
      }

      .header-cta .btn-sm .header-cta-text {
        display: none;
      }
    }

    @media (max-width: 767px) {
      .page-hero {
        min-height: 560px;
        padding: 76px 0 68px;
      }

      .page-hero h1 {
        font-size: 32px;
      }

      .hero-lead {
        font-size: 16px;
      }

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

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

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

      .step-card {
        min-height: 0;
      }

      .split-content {
        padding: 28px 22px;
      }

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

      .consult-card {
        padding: 24px 20px;
      }

      .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
      }

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

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

      .overall-article,
      .panel-box {
        padding: 26px 22px;
      }
    }

    @media (max-width: 520px) {
      .container {
        padding: 0 16px;
      }

      .brand-main {
        font-size: 23px;
      }

      .brand-sub {
        font-size: 15px;
        letter-spacing: 0.04em;
      }

      .brand-logo {
        gap: 4px;
        margin-right: 0;
      }

      .header-cta .btn {
        padding: 8px 12px;
        border-radius: 10px;
      }

      .header-cta .btn i {
        margin: 0;
      }

      .hero-trust {
        grid-template-columns: 1fr;
      }

      .section {
        padding: 62px 0;
      }

      .overall-points {
        align-items: flex-start;
        flex-direction: column;
      }

      .map-list li {
        grid-template-columns: 1fr;
        gap: 4px;
      }

      .map-list .map-desc {
        text-align: left;
        padding-left: 28px;
      }

      .stats-num {
        font-size: 28px;
      }
    }

/* roulang page: category3 */
:root {
  --page-bg: #070c16;
  --section-bg: #0a101f;
  --surface-glass: rgba(18, 29, 50, 0.58);
  --surface-soft: rgba(13, 22, 40, 0.85);
  --line: rgba(82, 130, 180, 0.22);
  --line-strong: rgba(42, 198, 230, 0.55);
  --text-bright: #edf3fc;
  --text-body: #c2d2e6;
  --text-muted: #8faac7;
  --text-weak: #6886a6;
  --brand: #2ac6e6;
  --brand-deep: #0d7c9e;
  --gold: #f2b84b;
  --gold-soft: #ffc468;
  --black: #020509;
  --radius-lg: 18px;
  --radius-md: 14px;
  --radius-btn: 10px;
  --shadow-card: 0 18px 44px rgba(0, 0, 0, 0.28);
  --footer-bg: #04070f;
  --max-width: 1200px;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--page-bg);
  color: var(--text-body);
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 42% at 18% -4%, rgba(42, 198, 230, 0.08), transparent),
    radial-gradient(ellipse 36% 30% at 90% 18%, rgba(242, 184, 75, 0.04), transparent);
  pointer-events: none;
  z-index: 0;
}
img {
  display: block;
  max-width: 100%;
}
a {
  color: var(--brand);
  text-decoration: none;
  transition: color 0.2s ease;
}
a:hover {
  color: var(--gold-soft);
}
ul, ol {
  list-style: none;
}
button, input, select, textarea {
  font: inherit;
  color: inherit;
}
button {
  cursor: pointer;
  border: 0;
  background: none;
}
section[id], div[id] {
  scroll-margin-top: 92px;
}
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
  position: relative;
  z-index: 1;
}
main {
  overflow: hidden;
  position: relative;
  z-index: 2;
}

/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 76px;
  z-index: 90;
  background: rgba(7, 12, 22, 0.72);
  border-bottom: 1px solid rgba(76, 124, 174, 0.16);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  transition: background 0.25s ease, box-shadow 0.25s ease;
}
.site-header.scrolled {
  background: rgba(5, 9, 17, 0.92);
  box-shadow: 0 10px 34px rgba(0, 0, 0, 0.28);
}
.header-inner {
  height: 76px;
  display: flex;
  align-items: center;
  gap: 18px;
}
.brand-logo {
  display: flex;
  align-items: baseline;
  gap: 6px;
  font-weight: 900;
  letter-spacing: 0.04em;
  flex-shrink: 0;
}
.brand-logo .flg1 {
  font-size: 27px;
  color: var(--brand);
  text-shadow: 0 0 22px rgba(42, 198, 230, 0.48);
}
.brand-logo .flg2 {
  font-size: 18px;
  color: var(--text-bright);
}
.brand-logo:hover .flg2 {
  color: var(--gold-soft);
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}
.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--text-body);
  font-size: 15px;
  padding: 9px 13px;
  border-radius: 10px;
  line-height: 1.2;
  font-weight: 500;
  transition: color 0.2s, background 0.2s;
}
.nav-link i {
  color: var(--text-weak);
  font-size: 14px;
  transition: color 0.2s;
}
.nav-link:hover {
  color: var(--brand);
  background: rgba(42, 198, 230, 0.08);
}
.nav-link:hover i {
  color: var(--brand);
}
.nav-link.active {
  color: var(--brand);
}
.nav-link.active i {
  color: var(--brand);
}
.nav-link.active::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 2px;
  border-radius: 999px;
  background: var(--brand);
  box-shadow: 0 0 10px rgba(42, 198, 230, 0.75);
}
.header-cta {
  display: flex;
  align-items: center;
  gap: 10px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  border-radius: var(--radius-btn);
  font-weight: 700;
  padding: 13px 24px;
  line-height: 1.3;
  font-size: 15px;
  letter-spacing: 0.02em;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease, border 0.2s ease;
  border: 1px solid transparent;
}
.btn i {
  font-size: 15px;
}
.btn-primary {
  background: linear-gradient(135deg, #2ac6e6, #0d7c9e);
  color: #f4fdff;
  border-color: transparent;
  box-shadow: 0 0 0 0 rgba(42, 198, 230, 0.22), 0 12px 28px rgba(6, 150, 194, 0.28);
}
.btn-primary:hover {
  color: #fff;
  box-shadow: 0 0 22px rgba(42, 198, 230, 0.38), 0 14px 32px rgba(6, 150, 194, 0.35);
  transform: translateY(-2px);
}
.btn-ghost {
  border-color: rgba(140, 180, 220, 0.38);
  background: rgba(16, 28, 46, 0.42);
  color: var(--text-bright);
}
.btn-ghost:hover {
  border-color: var(--line-strong);
  color: var(--brand);
  box-shadow: 0 0 18px rgba(42, 198, 230, 0.16);
  transform: translateY(-2px);
}
.btn-sm {
  padding: 9px 16px;
  font-size: 14px;
}
.header-btn-ghost {
  background: transparent;
  border-color: rgba(140, 180, 220, 0.24);
  color: var(--text-body);
}
.header-btn-ghost:hover {
  color: var(--brand);
  border-color: rgba(42, 198, 230, 0.5);
  transform: none;
  box-shadow: none;
}
.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  border: 1px solid rgba(140, 180, 220, 0.22);
  color: var(--text-bright);
  font-size: 20px;
  background: rgba(15, 25, 42, 0.5);
}

/* ===== Page Hero ===== */
.page-hero {
  position: relative;
  padding: calc(76px + 70px) 0 72px;
  background:
    linear-gradient(102deg, rgba(4, 7, 15, 0.96) 0%, rgba(6, 13, 24, 0.93) 38%, rgba(9, 17, 31, 0.72) 68%, rgba(12, 23, 39, 0.58) 100%),
    url('/assets/images/backpic/back-1.webp') center right / cover no-repeat;
  border-bottom: 1px solid rgba(42, 198, 230, 0.16);
}
.page-hero::after {
  content: "";
  position: absolute;
  right: -8%;
  top: 16%;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(42, 198, 230, 0.12), transparent 68%);
  z-index: 0;
}
.page-hero .container {
  z-index: 2;
}
.hero-breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 22px;
}
.hero-breadcrumb a {
  color: var(--text-muted);
}
.hero-breadcrumb a:hover {
  color: var(--brand);
}
.hero-breadcrumb i {
  font-size: 12px;
  color: var(--text-weak);
}
.hero-breadcrumb span {
  color: var(--text-bright);
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--brand);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.08em;
  padding: 8px 16px;
  border: 1px solid rgba(42, 198, 230, 0.32);
  background: rgba(42, 198, 230, 0.08);
  border-radius: 999px;
  margin-bottom: 22px;
}
.page-hero h1 {
  font-size: clamp(38px, 6vw, 60px);
  line-height: 1.2;
  color: var(--text-bright);
  font-weight: 900;
  letter-spacing: 0.02em;
  max-width: 720px;
  margin-bottom: 22px;
}
.page-hero h1 span {
  color: var(--brand);
}
.hero-lead {
  font-size: clamp(16px, 2.1vw, 20px);
  line-height: 1.85;
  color: var(--text-muted);
  max-width: 680px;
  margin-bottom: 38px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 46px;
}
.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 30px;
  border-top: 1px solid rgba(96, 144, 190, 0.2);
  padding-top: 24px;
}
.hero-point {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 14px;
  color: var(--text-muted);
}
.hero-point i {
  color: var(--brand);
  width: 24px;
  height: 24px;
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(42, 198, 230, 0.35);
  background: rgba(42, 198, 230, 0.07);
  font-size: 12px;
}

/* ===== Section framework ===== */
.section-block {
  position: relative;
  padding: 100px 0;
}
.section-block::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(78, 126, 174, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(78, 126, 174, 0.04) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
}
.section-block + .section-block {
  border-top: 1px solid rgba(64, 108, 150, 0.1);
}
.section-head {
  text-align: center;
  max-width: 820px;
  margin: 0 auto 58px;
}
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid rgba(42, 198, 230, 0.28);
  color: var(--brand);
  background: rgba(42, 198, 230, 0.06);
  border-radius: 999px;
  padding: 7px 16px;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 16px;
  letter-spacing: 0.04em;
}
.section-head h2 {
  font-size: clamp(30px, 4vw, 40px);
  font-weight: 800;
  color: var(--text-bright);
  line-height: 1.35;
  letter-spacing: 0.02em;
  margin-bottom: 14px;
}
.section-head p {
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1.9;
}

/* ===== Service area ===== */
.service-area {
  background: rgba(10, 16, 32, 0.7);
}
.helper-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.helper-card {
  background: var(--surface-glass);
  border: 1px solid rgba(96, 144, 190, 0.16);
  border-radius: var(--radius-lg);
  padding: 30px 24px 26px;
  position: relative;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
  overflow: hidden;
}
.helper-card::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(42, 198, 230, 0.9), transparent);
  opacity: 0;
  transition: opacity 0.25s;
}
.helper-card:hover {
  transform: translateY(-5px);
  border-color: rgba(42, 198, 230, 0.4);
  box-shadow: var(--shadow-card);
}
.helper-card:hover::before {
  opacity: 0.9;
}
.helper-icon {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: var(--brand);
  background: rgba(42, 198, 230, 0.09);
  border: 1px solid rgba(42, 198, 230, 0.24);
  box-shadow: 0 0 24px rgba(42, 198, 230, 0.1);
  margin-bottom: 22px;
}
.helper-card h3 {
  font-size: 19px;
  color: var(--text-bright);
  font-weight: 700;
  margin-bottom: 12px;
}
.helper-card p {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.85;
}
.helper-card .card-line {
  margin-top: 18px;
  height: 6px;
  border-radius: 999px;
  background: rgba(76, 116, 160, 0.16);
  overflow: hidden;
}
.helper-card .card-line i {
  display: block;
  height: 100%;
  width: 56%;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(42, 198, 230, 0.5), var(--brand));
}
.helper-card:nth-child(2) .card-line i {
  width: 72%;
}
.helper-card:nth-child(3) .card-line i {
  width: 64%;
}
.helper-card:nth-child(4) .card-line i {
  width: 82%;
}

/* ===== Step flow ===== */
.step-section {
  background: rgba(5, 9, 18, 0.64);
}
.step-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}
.step-item {
  background: rgba(13, 22, 40, 0.64);
  border: 1px solid rgba(96, 144, 190, 0.14);
  border-radius: var(--radius-lg);
  padding: 32px 24px 24px;
  position: relative;
  transition: transform 0.22s ease, border-color 0.22s ease;
}
.step-item:hover {
  transform: translateY(-4px);
  border-color: rgba(42, 198, 230, 0.36);
}
.step-num {
  font-size: 14px;
  color: var(--gold);
  font-weight: 700;
  letter-spacing: 0.08em;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
}
.step-num::after {
  content: "";
  width: 24px;
  height: 1px;
  background: rgba(242, 184, 75, 0.4);
}
.step-item h3 {
  color: var(--text-bright);
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}
.step-item p {
  color: var(--text-muted);
  font-size: 14px;
}

/* ===== Content split ===== */
.split-content {
  display: flex;
  flex-direction: column;
  gap: 90px;
}
.split-single {
  display: grid;
  grid-template-columns: 1fr 0.95fr;
  gap: 58px;
  align-items: center;
}
.split-copy h3 {
  color: var(--text-bright);
  font-size: clamp(24px, 3.2vw, 34px);
  font-weight: 800;
  line-height: 1.45;
  margin-bottom: 16px;
}
.split-copy p {
  color: var(--text-muted);
  margin-bottom: 16px;
}
.split-list {
  display: grid;
  gap: 12px;
  margin: 18px 0 24px;
}
.split-list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  color: var(--text-body);
  font-size: 15px;
}
.split-list li i {
  color: var(--brand);
  margin-top: 5px;
  font-size: 14px;
}
.split-media {
  position: relative;
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid rgba(96, 144, 190, 0.22);
  box-shadow: 0 26px 64px rgba(0, 0, 0, 0.42);
}
.split-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(150deg, rgba(8, 16, 28, 0.05), rgba(3, 8, 15, 0.46));
  pointer-events: none;
}
.split-media img {
  width: 100%;
  height: 100%;
  min-height: 300px;
  object-fit: cover;
}
.split-chip {
  position: absolute;
  right: 18px;
  bottom: 18px;
  z-index: 2;
  background: rgba(5, 11, 19, 0.68);
  backdrop-filter: blur(14px);
  border: 1px solid rgba(42, 198, 230, 0.3);
  color: var(--gold-soft);
  font-size: 13px;
  border-radius: 999px;
  padding: 8px 16px;
}
.split-single:nth-child(even) .split-copy {
  order: 2;
}

/* ===== Adapt area ===== */
.adapt-area {
  background: rgba(10, 17, 30, 0.72);
}
.adapt-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.adapt-item {
  background: var(--surface-glass);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(96, 144, 190, 0.16);
  padding: 30px 28px 28px;
  position: relative;
  transition: transform 0.2s ease, border-color 0.2s ease;
}
.adapt-item:hover {
  transform: translateY(-5px);
  border-color: rgba(42, 198, 230, 0.38);
}
.adapt-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  border-radius: 12px;
  background: rgba(242, 184, 75, 0.11);
  border: 1px solid rgba(242, 184, 75, 0.24);
  color: var(--gold);
  font-size: 20px;
  margin-bottom: 18px;
}
.adapt-item:nth-child(2) .adapt-icon {
  background: rgba(42, 198, 230, 0.11);
  border-color: rgba(42, 198, 230, 0.24);
  color: var(--brand);
}
.adapt-item h3 {
  color: var(--text-bright);
  font-size: 21px;
  font-weight: 700;
  margin-bottom: 12px;
}
.adapt-item p {
  color: var(--text-muted);
  font-size: 14px;
}

/* ===== Route CTA area ===== */
.direction-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.direction-card {
  background: rgba(17, 28, 49, 0.76);
  border: 1px solid rgba(96, 144, 190, 0.15);
  border-radius: var(--radius-lg);
  padding: 34px 28px;
  position: relative;
  overflow: hidden;
  transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}
.direction-card::after {
  content: "";
  position: absolute;
  bottom: 0;
  right: -40%;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(42, 198, 230, 0.11), transparent 70%);
}
.direction-card:hover {
  transform: translateY(-5px);
  border-color: rgba(42, 198, 230, 0.45);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.22);
}
.direction-tag {
  display: inline-block;
  font-size: 12px;
  padding: 5px 12px;
  border-radius: 999px;
  border: 1px solid rgba(42, 198, 230, 0.42);
  color: var(--brand);
  background: rgba(42, 198, 230, 0.07);
  letter-spacing: 0.06em;
  margin-bottom: 16px;
}
.direction-card:nth-child(3) .direction-tag {
  color: var(--gold);
  border-color: rgba(242, 184, 75, 0.42);
  background: rgba(242, 184, 75, 0.08);
}
.direction-card h3 {
  color: var(--text-bright);
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 10px;
}
.direction-card p {
  color: var(--text-muted);
  font-size: 14px;
  margin-bottom: 20px;
}
.direction-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--brand);
  font-weight: 600;
  font-size: 14px;
}
.direction-btn i {
  transition: transform 0.2s ease;
}
.direction-card:hover .direction-btn i {
  transform: translateX(4px);
}

/* ===== FAQ ===== */
.faq-section {
  background: rgba(5, 9, 17, 0.6);
}
.faq-wrap {
  max-width: 900px;
  margin: 0 auto;
}
.faq-item {
  background: rgba(15, 24, 42, 0.74);
  border: 1px solid rgba(96, 144, 190, 0.14);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color 0.22s ease, background 0.22s ease;
}
.faq-item.open {
  background: rgba(18, 31, 53, 0.86);
  border-color: rgba(42, 198, 230, 0.3);
}
.faq-q {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  text-align: left;
  padding: 22px 24px;
  color: var(--text-bright);
  font-weight: 600;
  font-size: 16px;
  line-height: 1.55;
  cursor: pointer;
}
.faq-q .faq-icon {
  margin-left: auto;
  width: 30px;
  height: 30px;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: var(--brand);
  border: 1px solid rgba(42, 198, 230, 0.3);
  background: rgba(42, 198, 230, 0.08);
  transition: transform 0.25s ease;
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
}
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.faq-a-inner {
  padding: 2px 24px 24px 52px;
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.95;
}

/* ===== Contact ===== */
.contact-block {
  background:
    linear-gradient(120deg, rgba(6, 12, 22, 0.5), rgba(10, 18, 31, 0.7)),
    radial-gradient(circle at 20% 10%, rgba(42, 198, 230, 0.07), transparent 50%);
}
.contact-inner {
  display: grid;
  grid-template-columns: 0.95fr 1.15fr;
  gap: 60px;
  align-items: stretch;
}
.contact-info h2 {
  font-size: clamp(28px, 3.6vw, 38px);
  color: var(--text-bright);
  font-weight: 800;
  line-height: 1.4;
  max-width: 420px;
  margin-bottom: 18px;
}
.contact-info p {
  color: var(--text-muted);
  margin-bottom: 24px;
  max-width: 430px;
}
.contact-list {
  display: grid;
  gap: 16px;
}
.contact-list-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  color: var(--text-body);
  font-size: 15px;
  background: rgba(19, 32, 54, 0.64);
  border: 1px solid rgba(96, 144, 190, 0.15);
  padding: 16px 18px;
  border-radius: 14px;
}
.contact-list-item i {
  color: var(--brand);
  font-size: 18px;
  margin-top: 3px;
  width: 24px;
  text-align: center;
}
.form-shell {
  background: rgba(12, 21, 37, 0.82);
  border: 1px solid rgba(96, 144, 190, 0.2);
  border-radius: 22px;
  padding: 34px;
  backdrop-filter: blur(8px);
}
.form-shell h3 {
  font-size: 22px;
  color: var(--text-bright);
  font-weight: 700;
  margin-bottom: 6px;
}
.form-shell .form-sub {
  color: var(--text-muted);
  font-size: 14px;
  margin-bottom: 24px;
}
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.form-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.form-field.full {
  grid-column: 1 / -1;
}
.form-field label {
  color: var(--text-body);
  font-size: 14px;
  font-weight: 500;
}
.form-control {
  width: 100%;
  border: 1px solid rgba(110, 160, 210, 0.2);
  background: rgba(8, 15, 28, 0.7);
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 15px;
  color: var(--text-bright);
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}
.form-control:focus {
  outline: none;
  border-color: var(--brand);
  background: rgba(8, 16, 30, 0.92);
  box-shadow: 0 0 0 3px rgba(42, 198, 230, 0.16);
}
textarea.form-control {
  min-height: 110px;
  resize: vertical;
}
select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' fill='%238aa3bf'%3E%3Cpath d='M1 1l4 4 4-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 38px;
}
select.form-control option {
  background: #0d1626;
  color: var(--text-bright);
}
.form-btn {
  width: 100%;
  margin-top: 22px;
}
.form-success-note {
  display: none;
  margin-top: 14px;
  font-size: 14px;
  color: var(--gold);
  text-align: center;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--footer-bg);
  border-top: 1px solid rgba(96, 144, 190, 0.14);
  padding-top: 58px;
  position: relative;
  z-index: 5;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.8fr 0.8fr 0.8fr;
  gap: 40px;
  padding-bottom: 38px;
  border-bottom: 1px solid rgba(96, 144, 190, 0.1);
}
.footer-logo {
  display: flex;
  align-items: baseline;
  gap: 6px;
  font-size: 24px;
  font-weight: 900;
  margin-bottom: 16px;
}
.footer-logo .flg1 {
  color: var(--brand);
}
.footer-logo .flg2 {
  font-size: 17px;
  color: var(--text-bright);
}
.footer-about p {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.9;
  max-width: 380px;
}
.footer-col h4 {
  color: var(--text-bright);
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
}
.footer-links {
  display: grid;
  gap: 10px;
}
.footer-links a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--text-muted);
  font-size: 14px;
}
.footer-links a i {
  font-size: 11px;
  color: var(--brand);
}
.footer-links a:hover {
  color: var(--gold-soft);
}
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 22px 0 26px;
}
.copy {
  color: var(--text-weak);
  font-size: 13px;
}
.footer-links-legal {
  display: flex;
  gap: 14px;
  align-items: center;
}
.footer-links-legal a {
  font-size: 13px;
  color: var(--text-weak);
  margin-right: 8px;
}
.footer-links-legal a:hover {
  color: var(--brand);
}

/* toast */
.toast-msg {
  position: fixed;
  left: 50%;
  bottom: 32px;
  transform: translateX(-50%) translateY(20px);
  background: rgba(18, 32, 54, 0.96);
  border: 1px solid rgba(42, 198, 230, 0.45);
  padding: 12px 24px;
  border-radius: 999px;
  color: var(--text-bright);
  font-size: 14px;
  z-index: 200;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}
.toast-msg.show {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

/* ===== Responsive ===== */
@media (max-width: 1100px) {
  .header-cta .btn-ghost {
    display: none;
  }
  .nav-toggle {
    display: inline-flex;
    margin-left: auto;
  }
  .nav-menu {
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    background: rgba(5, 9, 17, 0.97);
    backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 18px 24px 26px;
    border-bottom: 1px solid rgba(96, 144, 190, 0.14);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.28s ease, opacity 0.28s ease, visibility 0.28s;
    max-height: calc(100vh - 80px);
    overflow-y: auto;
  }
  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  .nav-link {
    padding: 14px 16px;
    font-size: 16px;
    border-radius: 12px;
    border-bottom: 1px solid rgba(96, 144, 190, 0.06);
  }
  .nav-link.active::after {
    bottom: 4px;
  }
  .helper-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .step-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .split-single {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .split-single:nth-child(even) .split-copy {
    order: 0;
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 820px) {
  .page-hero {
    padding-top: calc(76px + 50px);
  }
  .section-block {
    padding: 68px 0;
  }
  .contact-inner {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .adapt-grid {
    grid-template-columns: 1fr;
  }
  .direction-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .header-inner {
    gap: 6px;
  }
  .brand-logo .flg2 {
    font-size: 15px;
  }
  .brand-logo .flg1 {
    font-size: 24px;
  }
  .header-cta .btn-sm {
    font-size: 13px;
    padding: 8px 11px;
  }
  .nav-toggle {
    width: 38px;
    height: 38px;
  }
  .helper-grid {
    grid-template-columns: 1fr;
  }
  .step-grid {
    grid-template-columns: 1fr;
  }
  .form-grid {
    grid-template-columns: 1fr;
  }
  .form-field.full {
    grid-column: auto;
  }
  .form-shell {
    padding: 24px 18px;
  }
  .page-hero h1 {
    font-size: 36px;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .hero-points {
    gap: 10px;
  }
  .hero-point {
    width: calc(50% - 10px);
    font-size: 13px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
  .section-head p {
    font-size: 15px;
  }
  .split-media img {
    min-height: 220px;
  }
  .faq-a-inner {
    padding-left: 24px;
    padding-right: 18px;
  }
}