/* roulang page: index */
:root {
            --night: #060B18;
            --panel: #0C1428;
            --panel-light: #121C36;
            --arena: #3E6FF6;
            --volt: #36E0D0;
            --amber: #F5A524;
            --text-main: #C7D3E8;
            --text-sub: #8A97AD;
            --border-light: rgba(255, 255, 255, 0.08);
            --glass-border: rgba(255, 255, 255, 0.16);
            --card-radius: 16px;
            --card-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: var(--night);
            font-family: "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            color: var(--text-main);
            line-height: 1.7;
            background-image: linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
            background-size: 40px 40px;
            -webkit-font-smoothing: antialiased;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        img {
            display: block;
            max-width: 100%;
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
        }
        .tabular-nums {
            font-feature-settings: "tnum";
        }
        .section-divider {
            height: 1px;
            background: linear-gradient(to right, transparent, rgba(62, 111, 246, 0.4), transparent);
        }
        .section-title-decor {
            width: 40px;
            height: 4px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--arena), var(--volt));
        }
        .card-inner-highlight {
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12);
        }
        .glass-card {
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--glass-border);
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08), 0 8px 32px rgba(19, 40, 120, 0.45);
        }
        .btn-primary {
            display: inline-block;
            background: var(--amber);
            color: #0B1220;
            font-weight: 700;
            border-radius: 12px;
            padding: 12px 24px;
            transition: all 0.2s ease;
        }
        .btn-primary:hover {
            background: #FBBF24;
            box-shadow: 0 0 30px rgba(245, 165, 36, 0.45);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--amber);
            outline-offset: 2px;
        }
        .btn-brand {
            display: inline-block;
            background: var(--arena);
            color: #fff;
            font-weight: 600;
            border-radius: 12px;
            padding: 12px 24px;
            transition: all 0.2s ease;
        }
        .btn-brand:hover {
            background: #5B82FF;
            box-shadow: 0 0 20px rgba(62, 111, 246, 0.35);
            transform: translateY(-1px);
        }
        .btn-ghost {
            display: inline-block;
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: rgba(255, 255, 255, 0.8);
            border-radius: 12px;
            padding: 12px 24px;
            font-weight: 600;
            transition: all 0.2s ease;
        }
        .btn-ghost:hover {
            border-color: var(--volt);
            color: #fff;
            box-shadow: 0 0 16px rgba(54, 224, 208, 0.2);
        }
        .nav-link {
            position: relative;
            font-size: 14px;
            color: #3E4657;
            padding-bottom: 4px;
            transition: color 0.2s;
        }
        .nav-link:hover {
            color: #0B1220;
        }
        .nav-link.active {
            color: var(--arena);
            border-bottom: 2px solid var(--arena);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }
        .faq-answer.open {
            max-height: 200px;
        }
        .faq-icon {
            transition: transform 0.2s ease;
        }
        .faq-icon.rotated {
            transform: rotate(45deg);
        }
        .input-field {
            width: 100%;
            height: 48px;
            border-radius: 12px;
            background: #0A1326;
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 0 16px;
            color: #fff;
            transition: border-color 0.2s, box-shadow 0.2s;
        }
        .input-field::placeholder {
            color: rgba(255, 255, 255, 0.3);
        }
        .input-field:focus {
            outline: none;
            border-color: var(--arena);
            box-shadow: 0 0 0 2px rgba(62, 111, 246, 0.3);
        }
        textarea.input-field {
            height: 120px;
            padding: 12px 16px;
            resize: vertical;
        }
        .label-text {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 6px;
            display: block;
        }
        .countdown-box {
            width: 76px;
            height: 76px;
            border-radius: 16px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
        }
        .badge-cat {
            display: inline-flex;
            align-items: center;
            padding: 2px 10px;
            border-radius: 999px;
            font-size: 12px;
            background: rgba(62, 111, 246, 0.15);
            color: var(--volt);
            border: 1px solid rgba(62, 111, 246, 0.2);
        }
        @media (max-width: 768px) {
            .countdown-box {
                width: 64px;
                height: 64px;
            }
        }
        @media (max-width: 640px) {
            .hero-title {
                font-size: 1.75rem !important;
            }
        }
        ::selection {
            background: rgba(62, 111, 246, 0.4);
            color: #fff;
        }
        .scrollbar-none::-webkit-scrollbar {
            display: none;
        }

/* roulang page: category1 */
:root {
            --night: #060B18;
            --panel: #0C1428;
            --panel-light: #121C36;
            --arena: #3E6FF6;
            --volt: #36E0D0;
            --amber: #F5A524;
            --text: #C7D3E8;
            --text-secondary: #8A97AD;
            --border: rgba(255, 255, 255, 0.08);
            --radius: 16px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            font-feature-settings: "tnum";
            background-color: var(--night);
            background-image: linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
            background-size: 40px 40px;
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

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

        button,
        input,
        textarea {
            font-family: inherit;
        }

        /* ===== Header & Nav ===== */
        header .nav-link {
            font-size: 14px;
            color: #3E4657;
            padding: 24px 0;
            border-bottom: 2px solid transparent;
            transition: color 0.2s, border-color 0.2s;
            white-space: nowrap;
        }

        header .nav-link:hover {
            color: #0B1220;
        }

        header .nav-link.active {
            color: #3E6FF6;
            border-bottom-color: #3E6FF6;
            font-weight: 500;
        }

        /* ===== Buttons ===== */
        .btn-amber {
            background-color: #F5A524;
            color: #0B1220;
            font-weight: 700;
            border-radius: 12px;
            padding: 14px 28px;
            box-shadow: 0 0 30px rgba(245, 165, 36, 0.35);
            transition: all 0.2s;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .btn-amber:hover {
            background-color: #FBBF24;
            transform: translateY(-1px);
            box-shadow: 0 0 34px rgba(245, 165, 36, 0.5);
        }

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

        .btn-brand {
            background-color: #3E6FF6;
            color: #fff;
            font-weight: 600;
            border-radius: 12px;
            padding: 12px 24px;
            transition: all 0.2s;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .btn-brand:hover {
            background-color: #5B82FF;
            box-shadow: 0 0 30px rgba(62, 111, 246, 0.4);
        }

        .btn-ghost {
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: rgba(255, 255, 255, 0.85);
            border-radius: 12px;
            padding: 14px 28px;
            transition: all 0.2s;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .btn-ghost:hover {
            border-color: #36E0D0;
            color: #fff;
        }

        /* ===== FAQ Accordion ===== */
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 200px;
        }

        .faq-icon {
            transition: transform 0.2s ease;
            flex-shrink: 0;
        }

        /* ===== Card hover ===== */
        .card-hover {
            transition: transform 0.3s, background-color 0.3s, box-shadow 0.3s, border-color 0.3s;
        }

        .card-hover:hover {
            transform: translateY(-4px);
            background-color: #121C36;
            box-shadow: 0 8px 30px rgb(0, 0, 0, 0.35);
            border-color: rgba(62, 111, 246, 0.35);
        }

        /* ===== Separator line ===== */
        .section-divider {
            height: 1px;
            background: linear-gradient(to right, transparent, rgba(62, 111, 246, 0.4), transparent);
        }

        /* ===== Focus visible ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid #36E0D0;
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            header .nav-link {
                padding: 16px 0;
            }
        }

        @media (max-width: 640px) {
            .hero-title {
                font-size: 1.75rem;
                line-height: 1.25;
            }
        }

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

/* roulang page: article */
:root {
            --night: #060B18;
            --panel: #0C1428;
            --panel-light: #121C36;
            --arena: #3E6FF6;
            --volt: #36E0D0;
            --amber: #F5A524;
            --text-main: #C7D3E8;
            --text-sub: #8A97AD;
            --border: rgba(255,255,255,0.08);
            --shadow: 0 8px 30px rgba(0,0,0,0.35);
        }

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

        body {
            font-family: "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background-color: var(--night);
            color: var(--text-main);
            background-image:
                linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
            background-size: 40px 40px;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            font-feature-settings: "tnum";
        }

        a {
            text-decoration: none;
            color: inherit;
        }

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

        input,
        textarea,
        button {
            font-family: inherit;
        }

        .nav-link {
            position: relative;
            color: #3E4657;
            font-size: 14px;
            font-weight: 500;
            padding: 6px 2px;
            transition: color 0.2s;
        }

        .nav-link:hover {
            color: #0B1220;
        }

        .nav-link.active {
            color: #3E6FF6;
        }

        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 2px;
            background: #3E6FF6;
            border-radius: 2px;
        }

        /* 正文阅读区 */
        .article-body {
            font-size: 15px;
            line-height: 1.9;
            color: #C7D3E8;
            word-break: break-word;
        }

        .article-body h2 {
            font-size: 1.35rem;
            font-weight: 700;
            color: #fff;
            margin: 32px 0 16px;
            padding-left: 14px;
            border-left: 4px solid var(--arena);
            border-radius: 2px;
        }

        .article-body h3 {
            font-size: 1.15rem;
            font-weight: 600;
            color: #fff;
            margin: 28px 0 14px;
        }

        .article-body p {
            margin: 16px 0;
        }

        .article-body ul,
        .article-body ol {
            margin: 16px 0;
            padding-left: 22px;
        }

        .article-body li {
            margin: 6px 0;
        }

        .article-body blockquote {
            margin: 20px 0;
            padding: 14px 18px;
            border-left: 3px solid var(--volt);
            background: rgba(54, 224, 208, 0.06);
            border-radius: 0 10px 10px 0;
            color: #d7e3f5;
        }

        .article-body img {
            border-radius: 12px;
            border: 1px solid rgba(255, 255, 255, 0.08);
            margin: 20px 0;
        }

        .article-body a {
            color: var(--volt);
            border-bottom: 1px dashed rgba(54, 224, 208, 0.4);
            transition: color 0.2s;
        }

        .article-body a:hover {
            color: #fff;
            border-bottom-color: var(--volt);
        }

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
            font-size: 14px;
        }

        .article-body th,
        .article-body td {
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 10px 12px;
            text-align: left;
        }

        .article-body th {
            background: rgba(62, 111, 246, 0.15);
            color: #fff;
        }

        /* 卡片 hover */
        .info-card {
            transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
        }

        .info-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
            border-color: rgba(62, 111, 246, 0.35);
        }

        /* line-clamp fallback */
        .line-clamp-2 {
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

/* roulang page: category3 */
:root {
  --night: #060B18;
  --panel: #0C1428;
  --panel-light: #121C36;
  --arena: #3E6FF6;
  --volt: #36E0D0;
  --amber: #F5A524;
  --text-main: #C7D3E8;
  --text-sub: #8A97AD;
  --border: rgba(255, 255, 255, 0.08);
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background-color: var(--night);
  background-image: linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  color: var(--text-main);
  line-height: 1.7;
  font-feature-settings: "tnum";
  overflow-x: hidden;
}
img {
  max-width: 100%;
  display: block;
}
a {
  text-decoration: none;
  color: inherit;
}
button {
  cursor: pointer;
  font-family: inherit;
}
input, select, textarea {
  font-family: inherit;
}

/* 导航链接 */
.nav-link {
  position: relative;
  font-size: 14px;
  color: #3E4657;
  font-weight: 500;
  padding: 6px 2px;
  transition: color 0.2s;
  white-space: nowrap;
}
.nav-link:hover {
  color: #0B1220;
}
.nav-link.active {
  color: #3E6FF6;
  font-weight: 600;
}
.nav-link.active::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: #3E6FF6;
  border-radius: 2px;
}
.mobile-link {
  display: block;
  padding: 12px 14px;
  border-radius: 10px;
  font-size: 15px;
  color: #0B1220;
  font-weight: 500;
  transition: background 0.2s, color 0.2s;
}
.mobile-link:hover {
  background: #F4F6FA;
  color: #3E6FF6;
}
.mobile-link.active {
  background: #EEF2FF;
  color: #3E6FF6;
  font-weight: 600;
}

/* 按钮体系 */
.amb-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 30px;
  border-radius: 12px;
  background: #F5A524;
  color: #0B1220;
  font-weight: 700;
  font-size: 15px;
  transition: all 0.2s;
  box-shadow: 0 4px 16px rgba(245, 165, 36, 0.3);
}
.amb-btn:hover {
  background: #FBBF24;
  box-shadow: 0 0 30px rgba(245, 165, 36, 0.45);
  transform: translateY(-1px);
}
.amb-btn:active {
  transform: translateY(0);
}
.amb-btn:focus-visible {
  outline: 2px solid #F5A524;
  outline-offset: 3px;
}
.blue-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 30px;
  border-radius: 12px;
  background: #3E6FF6;
  color: #fff;
  font-weight: 600;
  font-size: 15px;
  transition: all 0.2s;
}
.blue-btn:hover {
  background: #5B82FF;
  box-shadow: 0 0 30px rgba(62, 111, 246, 0.35);
  transform: translateY(-1px);
}
.blue-btn:focus-visible {
  outline: 2px solid #3E6FF6;
  outline-offset: 3px;
}
.ghost-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 30px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: rgba(255, 255, 255, 0.85);
  font-weight: 500;
  font-size: 15px;
  transition: all 0.2s;
}
.ghost-btn:hover {
  border-color: #36E0D0;
  color: #fff;
  box-shadow: 0 0 20px rgba(54, 224, 208, 0.15);
}
.ghost-btn:focus-visible {
  outline: 2px solid #36E0D0;
  outline-offset: 3px;
}

/* 板块标题 */
.section-head {
  position: relative;
  padding-left: 56px;
}
.section-head::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 40px;
  height: 4px;
  border-radius: 4px;
  background: linear-gradient(90deg, #3E6FF6, #36E0D0);
}
.section-head h2 {
  font-size: clamp(1.25rem, 2vw, 1.75rem);
  font-weight: 600;
  color: #fff;
  line-height: 1.3;
}
.section-head p {
  margin-top: 8px;
  font-size: 14px;
  color: #8A97AD;
}

/* 卡片 */
.panel-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  transition: all 0.25s ease;
}
.panel-card:hover {
  transform: translateY(-4px);
  border-color: rgba(62, 111, 246, 0.35);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35), 0 0 0 1px rgba(62, 111, 246, 0.08);
}

/* 玻璃条 */
.glass-bar {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 16px;
  box-shadow: 0 8px 32px rgba(19, 40, 120, 0.45);
}

/* 分隔光晕线 */
.glow-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(62, 111, 246, 0.4), transparent);
}

/* FAQ */
.faq-item {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: border-color 0.2s;
}
.faq-item.open {
  border-color: rgba(62, 111, 246, 0.4);
}
.faq-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: 56px;
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 500;
  color: #fff;
  text-align: left;
  background: transparent;
  transition: background 0.2s;
}
.faq-btn:hover {
  background: rgba(255, 255, 255, 0.03);
}
.faq-icon {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(54, 224, 208, 0.1);
  border: 1px solid rgba(54, 224, 208, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #36E0D0;
  transition: transform 0.2s;
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.faq-answer-inner {
  padding: 0 20px 20px;
  font-size: 14px;
  line-height: 1.8;
  color: #8A97AD;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  margin: 0 20px;
  padding-top: 14px;
  padding-bottom: 18px;
}

/* 表单 */
.form-input {
  width: 100%;
  height: 46px;
  border-radius: 12px;
  background: #0A1326;
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 0 16px;
  color: #fff;
  font-size: 14px;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}
.form-input::placeholder {
  color: rgba(255, 255, 255, 0.3);
}
.form-input:focus {
  border-color: #3E6FF6;
  box-shadow: 0 0 0 3px rgba(62, 111, 246, 0.2);
}
select.form-input {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%238A97AD' stroke-width='2'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}
select.form-input option {
  background: #0C1428;
  color: #fff;
}
textarea.form-input {
  height: 120px;
  padding-top: 14px;
  resize: vertical;
}

/* 提交成功态 */
.submit-success {
  background: #22C55E !important;
  color: #fff !important;
  box-shadow: 0 0 24px rgba(34, 197, 94, 0.3) !important;
}
.submit-success:hover {
  background: #16A34A !important;
}

/* 图片遮罩 */
.img-mask {
  position: relative;
}
.img-mask img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.img-mask::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(6, 11, 24, 0.85));
  border-radius: inherit;
}

/* 响应式工具 */
@media (max-width: 1023px) {
  .section-head {
    padding-left: 0;
  }
  .section-head::before {
    position: static;
    display: block;
    margin-bottom: 10px;
  }
}

/* roulang page: category2 */
:root {
            --night: #060B18;
            --panel: #0C1428;
            --panel-light: #121C36;
            --arena: #3E6FF6;
            --volt: #36E0D0;
            --amber: #F5A524;
            --text-main: #C7D3E8;
            --text-second: #8A97AD;
            --border-light: rgba(255, 255, 255, 0.08);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background-color: var(--night);
            color: var(--text-main);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            background-image: linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
            background-size: 40px 40px;
        }

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

        a {
            text-decoration: none;
            color: inherit;
        }

        button {
            font-family: inherit;
            cursor: pointer;
        }

        input,
        textarea {
            font-family: inherit;
        }

        /* 导航链接 */
        .nav-link {
            font-size: 14px;
            color: #3E4657;
            font-weight: 500;
            padding: 8px 2px;
            position: relative;
            transition: color 0.2s ease;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: #0B1220;
        }

        .nav-link.active {
            color: #3E6FF6;
            font-weight: 600;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 2px;
            background: #3E6FF6;
            border-radius: 4px;
        }

        /* 板块标签 */
        .section-tag {
            display: inline-flex;
            align-items: center;
            font-size: 12px;
            font-weight: 500;
            color: var(--volt);
            background: rgba(62, 111, 246, 0.15);
            border: 1px solid rgba(62, 111, 246, 0.2);
            border-radius: 9999px;
            padding: 6px 14px;
            letter-spacing: 0.04em;
        }

        /* 板块标题 */
        .section-title {
            margin-top: 14px;
            font-size: clamp(1.25rem, 2vw, 1.75rem);
            font-weight: 600;
            color: #fff;
            line-height: 1.35;
            position: relative;
            padding-left: 18px;
        }

        .section-title::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0.12em;
            width: 4px;
            height: 1.05em;
            border-radius: 4px;
            background: linear-gradient(180deg, var(--volt), var(--arena));
        }

        /* 通用卡片 */
        .card-base {
            background: var(--panel);
            border: 1px solid var(--border-light);
            border-radius: 16px;
            padding: 26px 24px;
            transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
        }

        .card-base:hover {
            transform: translateY(-4px);
            border-color: rgba(62, 111, 246, 0.35);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35), 0 0 0 1px rgba(62, 111, 246, 0.08);
        }

        /* 内容卡图标 */
        .card-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            transition: transform 0.25s ease;
        }

        .card-base:hover .card-icon {
            transform: scale(1.08);
        }

        /* FAQ 图标 */
        .faq-icon {
            transition: transform 0.25s ease;
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }

        .faq-item.active {
            border-color: rgba(62, 111, 246, 0.35);
        }

        /* Hero 装饰光 */
        .hero-glow {
            background: radial-gradient(circle at 18% 35%, rgba(62, 111, 246, 0.22), transparent 55%),
                radial-gradient(circle at 85% 70%, rgba(54, 224, 208, 0.1), transparent 45%);
        }

        /* 分隔光晕 */
        .section-divider {
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(62, 111, 246, 0.4), transparent);
        }

        /* 数字等宽 */
        .tabular-nums {
            font-feature-settings: "tnum";
        }

        /* 响应式 */
        @media (max-width: 1023px) {
            .nav-link.active::after {
                display: none;
            }
        }

        @media (max-width: 640px) {
            .section-title {
                padding-left: 14px;
            }

            .section-title::before {
                width: 3px;
            }
        }

        /* 滚动条 */
        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }

        ::-webkit-scrollbar-track {
            background: var(--night);
        }

        ::-webkit-scrollbar-thumb {
            background: rgba(255, 255, 255, 0.12);
            border-radius: 8px;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: rgba(62, 111, 246, 0.4);
        }