/* roulang page: index */
:root {
  --bg-deep: #0b1220;
  --bg-card: #111a2e;
  --bg-elevated: #17223a;
  --primary: #38bdf8;
  --primary-light: #7dd3fc;
  --primary-dark: #0284c7;
  --accent: #22d3ee;
  --danger: #f43f5e;
  --text-hi: #f1f5f9;
  --text-mid: #94a3b8;
  --text-low: #64748b;
  --line: rgba(148,163,184,0.14);
  --btn-grad: linear-gradient(135deg, #38bdf8, #0ea5e9);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  background:var(--bg-deep);
  color:var(--text-hi);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input{font-family:inherit}
.container-main{max-width:1152px;margin:0 auto;padding:0 24px}
@media(max-width:768px){.container-main{padding:0 16px}}
.main-content{margin-left:80px}
@media(max-width:767px){.main-content{margin-left:0;padding-top:56px}}

/* 左侧导航 */
.side-nav{
  position:fixed;top:0;left:0;bottom:0;width:80px;
  background:#0f172a;border-right:1px solid var(--line);
  z-index:60;display:flex;flex-direction:column;align-items:center;padding:16px 0;
}
.side-nav-logo{display:flex;flex-direction:column;align-items:center;gap:6px;margin-bottom:28px}
.logo-ice{
  width:36px;height:36px;border-radius:50%;
  background:linear-gradient(135deg,rgba(56,189,248,0.25),rgba(34,211,238,0.15));
  border:1px solid rgba(56,189,248,0.4);
  display:flex;align-items:center;justify-content:center;
  position:relative;
}
.logo-ice svg{width:18px;height:18px;color:var(--primary-light)}
.logo-ice::after{
  content:'';position:absolute;inset:-3px;border-radius:50%;
  border:1px dashed rgba(56,189,248,0.3);animation:spin 12s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}
.side-nav-logo .logo-text{font-size:10px;font-weight:800;color:var(--text-hi);letter-spacing:0.02em}
.side-nav-items{display:flex;flex-direction:column;gap:6px;flex:1}
.side-nav-item{
  display:flex;flex-direction:column;align-items:center;gap:4px;
  width:64px;padding:10px 0;color:var(--text-mid);font-size:11px;
  border-radius:12px;transition:all 0.2s;position:relative;cursor:pointer;
}
.side-nav-item:hover{color:var(--primary-light);background:rgba(56,189,248,0.08)}
.side-nav-item.active{color:var(--primary-light)}
.side-nav-item.active::before{
  content:'';position:absolute;left:-8px;top:50%;transform:translateY(-50%);
  width:3px;height:20px;background:var(--primary);border-radius:0 3px 3px 0;
}
.side-nav-bottom{margin-top:auto;padding-top:16px}
@media(max-width:767px){.side-nav{display:none}}

/* 移动端顶栏 */
.mobile-header{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;
  background:#0f172a;border-bottom:1px solid var(--line);z-index:70;
  align-items:center;justify-content:space-between;padding:0 16px;
}
.mobile-header-left{display:flex;align-items:center;gap:10px}
.mobile-menu-btn{
  width:40px;height:40px;display:flex;align-items:center;justify-content:center;
  background:transparent;border:none;color:var(--text-mid);cursor:pointer;border-radius:10px;
  transition:background 0.2s;
}
.mobile-menu-btn:hover{background:rgba(56,189,248,0.1);color:var(--primary-light)}
.mobile-logo{font-size:16px;font-weight:800;color:var(--text-hi);letter-spacing:-0.02em}
.mobile-header-cta{
  display:inline-flex;align-items:center;gap:4px;background:var(--btn-grad);
  color:#fff;font-size:12px;font-weight:600;padding:8px 14px;border-radius:10px;
  transition:filter 0.2s,transform 0.15s;
}
.mobile-header-cta:hover{filter:brightness(1.15);transform:scale(1.02)}
@media(max-width:767px){.mobile-header{display:flex}}

/* 抽屉 */
.drawer-overlay{
  position:fixed;inset:0;background:rgba(0,0,0,0.5);z-index:75;
  opacity:0;visibility:hidden;transition:opacity 0.3s,visibility 0.3s;
}
.drawer-overlay.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;left:0;width:260px;height:100%;background:#0f172a;z-index:80;
  transform:translateX(-100%);transition:transform 0.3s ease;display:flex;flex-direction:column;
  padding:24px 20px;
}
.drawer.open{transform:translateX(0)}
.drawer-logo{display:flex;align-items:center;gap:12px;margin-bottom:32px}
.drawer-logo .drawer-logo-text{font-size:18px;font-weight:900;color:var(--text-hi);letter-spacing:-0.02em}
.drawer-nav{display:flex;flex-direction:column;gap:8px;flex:1}
.drawer-link{
  display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:12px;
  color:var(--text-mid);font-size:15px;font-weight:500;transition:all 0.2s;
}
.drawer-link:hover{background:rgba(56,189,248,0.08);color:var(--primary-light)}
.drawer-link.active{background:rgba(56,189,248,0.12);color:var(--primary-light)}
.drawer-footer{font-size:12px;color:var(--text-low);padding-top:16px;border-top:1px solid var(--line)}

/* 按钮 */
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--btn-grad);color:#fff;font-weight:600;font-size:14px;
  padding:12px 26px;border-radius:12px;border:none;cursor:pointer;
  transition:filter 0.2s,transform 0.15s,box-shadow 0.2s;
  box-shadow:0 4px 16px rgba(56,189,248,0.25);
}
.btn-primary:hover{filter:brightness(1.15);transform:scale(1.02);box-shadow:0 8px 24px rgba(56,189,248,0.35)}
.btn-primary:active{transform:scale(0.98)}
.btn-secondary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:transparent;color:var(--primary-light);font-weight:600;font-size:14px;
  padding:12px 26px;border-radius:12px;border:1px solid rgba(56,189,248,0.5);
  cursor:pointer;transition:background 0.2s,border-color 0.2s,transform 0.15s;
}
.btn-secondary:hover{background:rgba(56,189,248,0.1);border-color:var(--primary)}
.btn-secondary:active{transform:scale(0.98)}

/* 区块 */
.section-tag{
  display:inline-block;background:rgba(56,189,248,0.12);color:var(--primary-light);
  font-size:12px;font-weight:600;padding:4px 14px;border-radius:999px;letter-spacing:0.05em;
}
.section-title{font-size:28px;font-weight:800;letter-spacing:-0.02em;line-height:1.2;color:var(--text-hi);margin-top:12px}
.section-subtitle{margin-top:8px;font-size:15px;color:var(--text-mid)}
@media(max-width:768px){.section-title{font-size:22px}}

/* Hero */
.hero-bg-grid{
  background-image:radial-gradient(circle,rgba(148,163,184,0.4) 1px,transparent 1px);
  background-size:24px 24px;
}
.hero-glow{
  width:500px;height:500px;border-radius:50%;
  background:radial-gradient(circle,rgba(56,189,248,0.18),transparent 70%);
  filter:blur(60px);
}

/* 倒计时 */
.countdown-section{position:relative;padding:36px 0}
.countdown-section::before,.countdown-section::after{
  content:'';position:absolute;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(56,189,248,0.5),transparent);
}
.countdown-section::before{top:0}
.countdown-section::after{bottom:0}
.countdown-box{
  background:var(--bg-card);border:2px solid rgba(56,189,248,0.35);
  border-radius:16px;padding:18px 16px;min-width:76px;text-align:center;
  box-shadow:0 8px 20px rgba(0,0,0,0.2);
}
.countdown-num{
  font-size:28px;font-weight:800;font-variant-numeric:tabular-nums;
  color:var(--text-hi);display:block;line-height:1.2;
}
.countdown-label{font-size:12px;color:var(--text-mid);display:block;margin-top:4px}

/* 看点卡片 */
.feature-card{
  display:flex;align-items:center;gap:16px;background:var(--bg-card);
  border-radius:16px;padding:22px 20px;border:1px solid var(--line);
  position:relative;overflow:hidden;
  transition:transform 0.2s,box-shadow 0.2s,border-color 0.2s;
}
.feature-card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--primary),transparent);
}
.feature-card:hover{
  transform:translateY(-4px);box-shadow:0 16px 30px rgba(56,189,248,0.1);
  border-color:rgba(56,189,248,0.35);
}
.icon-wrap{
  width:44px;height:44px;border-radius:50%;flex-shrink:0;
  background:rgba(56,189,248,0.15);display:flex;align-items:center;justify-content:center;
}
.icon-wrap svg{width:20px;height:20px;color:var(--primary-light)}
.feature-arrow{transition:transform 0.2s,color 0.2s}
.feature-card:hover .feature-arrow{transform:translateX(4px);color:var(--primary-light)}

/* 订阅 */
.subscribe-card{
  background:linear-gradient(var(--bg-card),var(--bg-card)) padding-box,
             linear-gradient(135deg,rgba(56,189,248,0.6),rgba(34,211,238,0.3)) border-box;
  border:1px solid transparent;border-radius:20px;
}
.subscribe-input{
  height:48px;background:var(--bg-deep);border:1px solid rgba(56,189,248,0.3);
  border-radius:12px;padding:0 16px;color:var(--text-hi);font-size:14px;
  transition:border-color 0.2s,box-shadow 0.2s;width:100%;
}
.subscribe-input::placeholder{color:var(--text-low)}
.subscribe-input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(56,189,248,0.25)}

/* 资讯卡片 */
.article-card{
  background:var(--bg-card);border-radius:16px;overflow:hidden;
  border:1px solid var(--line);display:block;
  transition:transform 0.25s,box-shadow 0.25s,border-color 0.25s;
}
.article-card:hover{
  transform:translateY(-4px);box-shadow:0 16px 32px rgba(56,189,248,0.12);
  border-color:rgba(56,189,248,0.35);
}
.article-img-wrap{position:relative;overflow:hidden}
.article-img{width:100%;height:180px;object-fit:cover;transition:transform 0.4s}
.article-card:hover .article-img{transform:scale(1.04)}
.badge-ice{
  position:absolute;top:12px;left:12px;display:inline-block;
  background:rgba(10,18,32,0.75);color:var(--primary-light);
  font-size:12px;font-weight:600;padding:3px 10px;border-radius:999px;
  border:1px solid rgba(56,189,248,0.3);
}
.article-title{
  font-size:16px;font-weight:700;line-height:1.5;color:var(--text-hi);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.article-excerpt{
  font-size:14px;color:var(--text-mid);line-height:1.65;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-top:8px;
}

/* 回放卡片 */
.replay-card{
  background:var(--bg-card);border-radius:16px;overflow:hidden;
  border:1px solid var(--line);display:block;
  transition:transform 0.25s,box-shadow 0.25s,border-color 0.25s;
}
.replay-card:hover{
  transform:translateY(-4px);box-shadow:0 16px 32px rgba(56,189,248,0.12);
  border-color:rgba(56,189,248,0.35);
}
.replay-card:hover .replay-img{transform:scale(1.05)}
.replay-img{transition:transform 0.4s}

/* FAQ */
.faq-item{
  background:var(--bg-card);border-radius:12px;border:1px solid var(--line);
  overflow:hidden;transition:border-color 0.25s;margin-bottom:12px;
}
.faq-item.active{border-color:rgba(56,189,248,0.4)}
.faq-question{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:16px 18px;font-size:15px;font-weight:600;color:var(--text-hi);
  background:transparent;border:none;text-align:left;cursor:pointer;transition:color 0.2s;
}
.faq-item.active .faq-question{color:var(--primary-light)}
.faq-icon{width:16px;height:16px;flex-shrink:0;transition:transform 0.3s;color:var(--text-mid)}
.faq-item.active .faq-icon{transform:rotate(180deg);color:var(--primary)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height 0.35s ease}
.faq-answer p{padding:0 18px 18px;font-size:14px;color:var(--text-mid);line-height:1.75}
.faq-item.active .faq-answer{max-height:300px}

/* CTA */
.cta-section{
  position:relative;overflow:hidden;border-radius:20px;
  background:var(--bg-elevated);padding:48px 24px;text-align:center;
}
.cta-section::before,.cta-section::after{
  content:'';position:absolute;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(56,189,248,0.6),transparent);
}
.cta-section::before{top:0}
.cta-section::after{bottom:0}

/* 页脚 */
.site-footer{margin-left:80px;background:#0a0f1c;border-top:1px solid var(--line)}
@media(max-width:767px){.site-footer{margin-left:0}}
.footer-heading{font-size:14px;font-weight:600;color:var(--text-hi);margin-bottom:16px}
.footer-links{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:var(--text-mid);transition:color 0.2s}
.footer-links a:hover{color:var(--primary-light)}
.footer-logo{font-size:20px;font-weight:900;color:var(--text-hi);letter-spacing:-0.02em}

/* 通用工具 */
.section-pad{padding:64px 0}
@media(max-width:768px){.section-pad{padding:48px 0}}
.text-glow{text-shadow:0 0 30px rgba(56,189,248,0.4)}
.hover-scale{transition:transform 0.25s}
.hover-scale:hover{transform:scale(1.02)}

/* roulang page: category1 */
:root {
        --bg-deep: #0b1220;
        --bg-card: #111a2e;
        --bg-elevated: #17223a;
        --primary: #38bdf8;
        --primary-light: #7dd3fc;
        --primary-dark: #0284c7;
        --accent: #22d3ee;
        --danger: #f43f5e;
        --text-hi: #f1f5f9;
        --text-mid: #94a3b8;
        --text-low: #64748b;
        --line: rgba(148, 163, 184, 0.14);
        --btn-grad: linear-gradient(135deg, #38bdf8, #0ea5e9);
    }

    * {
        box-sizing: border-box;
    }

    html {
        scroll-behavior: smooth;
    }

    body {
        margin: 0;
        font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        background: var(--bg-deep);
        color: var(--text-hi);
        line-height: 1.75;
        font-weight: 400;
        -webkit-font-smoothing: antialiased;
    }

    a {
        text-decoration: none;
        color: inherit;
        transition: color .2s ease;
    }

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

    button,
    input {
        font-family: inherit;
        font-size: 100%;
        outline: none;
    }

    /* 容器 */
    .container-main {
        max-width: 1152px;
        margin: 0 auto;
        padding: 0 24px;
    }

    @media (max-width: 640px) {
        .container-main {
            padding: 0 16px;
        }
    }

    /* 主内容包裹 */
    .main-wrap {
        margin-left: 0;
        min-height: 100vh;
        display: flex;
        flex-direction: column;
    }

    @media (min-width: 1024px) {
        .main-wrap {
            margin-left: 80px;
        }
    }

    /* ===== 桌面左侧导航 ===== */
    .side-nav {
        position: fixed;
        left: 0;
        top: 0;
        bottom: 0;
        width: 80px;
        background: #0f172a;
        border-right: 1px solid var(--line);
        z-index: 50;
        display: none;
        flex-direction: column;
        align-items: center;
        padding: 24px 0 16px;
    }

    @media (min-width: 1024px) {
        .side-nav {
            display: flex;
        }
    }

    .side-nav-logo {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 8px;
        margin-bottom: 32px;
    }

    .logo-icon {
        width: 42px;
        height: 42px;
        border-radius: 50%;
        background: var(--btn-grad);
        display: flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        font-size: 20px;
        font-weight: 900;
        box-shadow: 0 0 20px rgba(56, 189, 248, 0.35);
    }

    .logo-text {
        font-size: 11px;
        font-weight: 700;
        color: var(--text-hi);
        letter-spacing: 0.02em;
    }

    .side-nav-items {
        display: flex;
        flex-direction: column;
        gap: 6px;
        width: 100%;
        padding: 0 10px;
        flex: 1;
    }

    .side-nav-item {
        position: relative;
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 4px;
        padding: 14px 4px 10px;
        border-radius: 12px;
        color: #94a3b8;
        font-size: 11px;
        font-weight: 500;
        transition: background .2s, color .2s;
    }

    .side-nav-item:hover {
        background: rgba(56, 189, 248, 0.08);
        color: var(--primary-light);
    }

    .side-nav-item.active {
        color: var(--primary);
    }

    .side-nav-item.active::before {
        content: '';
        position: absolute;
        left: -10px;
        top: 50%;
        transform: translateY(-50%);
        width: 3px;
        height: 28px;
        background: var(--primary);
        border-radius: 0 4px 4px 0;
        box-shadow: 0 0 12px rgba(56, 189, 248, 0.6);
    }

    .side-nav-footer {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 8px;
        padding-top: 16px;
        border-top: 1px solid var(--line);
        width: 100%;
    }

    .side-nav-footer a {
        width: 100%;
        text-align: center;
        padding: 10px 0;
        color: var(--text-low);
        transition: color .2s;
    }

    .side-nav-footer a:hover {
        color: var(--primary);
    }

    /* ===== 移动端顶部栏 ===== */
    .mobile-topbar {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        height: 56px;
        background: rgba(15, 23, 42, 0.9);
        backdrop-filter: blur(8px);
        border-bottom: 1px solid var(--line);
        z-index: 40;
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 0 16px;
    }

    @media (min-width: 1024px) {
        .mobile-topbar {
            display: none;
        }
    }

    .mobile-topbar .topbar-title {
        color: #fff;
        font-size: 16px;
        font-weight: 800;
        letter-spacing: -0.01em;
        white-space: nowrap;
    }

    .mobile-menu-btn {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        border: 1px solid var(--line);
        border-radius: 12px;
        background: transparent;
        color: #94a3b8;
        cursor: pointer;
        transition: background .2s;
    }

    .mobile-menu-btn:hover {
        background: rgba(56, 189, 248, 0.08);
        color: var(--primary);
    }

    /* ===== 移动端抽屉 ===== */
    .drawer-overlay {
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.55);
        z-index: 60;
        opacity: 0;
        pointer-events: none;
        transition: opacity .3s ease;
    }

    .drawer-overlay.show {
        opacity: 1;
        pointer-events: auto;
    }

    .mobile-drawer {
        position: fixed;
        top: 0;
        left: 0;
        bottom: 0;
        width: 264px;
        background: #0f172a;
        z-index: 70;
        transform: translateX(-100%);
        transition: transform .3s ease;
        display: flex;
        flex-direction: column;
        padding: 24px 16px;
    }

    .mobile-drawer.open {
        transform: translateX(0);
    }

    .drawer-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        margin-bottom: 32px;
        padding-bottom: 16px;
        border-bottom: 1px solid var(--line);
    }

    .drawer-logo {
        font-size: 20px;
        font-weight: 900;
        color: #fff;
        letter-spacing: -0.02em;
    }

    .drawer-close {
        width: 36px;
        height: 36px;
        border: none;
        background: transparent;
        color: #64748b;
        font-size: 22px;
        cursor: pointer;
        border-radius: 8px;
        transition: background .2s, color .2s;
    }

    .drawer-close:hover {
        background: rgba(56, 189, 248, 0.08);
        color: var(--primary);
    }

    .drawer-nav {
        display: flex;
        flex-direction: column;
        gap: 4px;
        flex: 1;
    }

    .drawer-nav-item {
        display: flex;
        align-items: center;
        gap: 12px;
        padding: 14px 12px;
        border-radius: 12px;
        color: #94a3b8;
        font-size: 15px;
        font-weight: 500;
        transition: background .2s, color .2s;
    }

    .drawer-nav-item:hover {
        background: rgba(56, 189, 248, 0.08);
        color: var(--primary-light);
    }

    .drawer-nav-item.active {
        color: var(--primary);
        background: rgba(56, 189, 248, 0.06);
    }

    .drawer-footer {
        padding-top: 16px;
        border-top: 1px solid var(--line);
        font-size: 12px;
        color: var(--text-low);
        text-align: center;
    }

    /* ===== 按钮 ===== */
    .btn-primary {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: var(--btn-grad);
        color: #fff;
        font-weight: 600;
        font-size: 15px;
        padding: 14px 28px;
        border-radius: 12px;
        border: none;
        cursor: pointer;
        transition: filter .2s, transform .2s, box-shadow .2s;
        box-shadow: 0 4px 24px rgba(14, 165, 233, 0.25);
        line-height: 1;
    }

    .btn-primary:hover {
        filter: brightness(1.15);
        transform: scale(1.02);
        box-shadow: 0 8px 32px rgba(14, 165, 233, 0.35);
    }

    .btn-primary:active {
        transform: scale(0.98);
    }

    .btn-secondary {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: transparent;
        color: var(--primary);
        font-weight: 600;
        font-size: 15px;
        padding: 13px 26px;
        border-radius: 12px;
        border: 1px solid rgba(56, 189, 248, 0.4);
        cursor: pointer;
        transition: background .2s, transform .2s;
        line-height: 1;
    }

    .btn-secondary:hover {
        background: rgba(56, 189, 248, 0.1);
        transform: scale(1.02);
    }

    /* ===== Hero ===== */
    .hero-section {
        position: relative;
        min-height: 62vh;
        display: flex;
        align-items: center;
        overflow: hidden;
    }

    .hero-bg img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        opacity: 0.35;
    }

    .hero-bg-mask {
        position: absolute;
        inset: 0;
        background: linear-gradient(90deg, var(--bg-deep) 20%, rgba(11, 18, 32, 0.7) 70%, transparent);
    }

    .hero-glow {
        position: absolute;
        top: -80px;
        right: -60px;
        width: 520px;
        height: 520px;
        background: rgba(34, 211, 238, 0.15);
        border-radius: 50%;
        filter: blur(100px);
        pointer-events: none;
    }

    .hero-grid-pattern {
        position: absolute;
        inset: 0;
        background-image: radial-gradient(rgba(255, 255, 255, 0.07) 1px, transparent 1px);
        background-size: 28px 28px;
        opacity: 0.04;
        pointer-events: none;
    }

    /* ===== 板块标题 ===== */
    .section-label {
        display: inline-block;
        font-size: 13px;
        font-weight: 700;
        color: var(--primary);
        letter-spacing: 0.06em;
        text-transform: uppercase;
        margin-bottom: 8px;
    }

    .section-title {
        font-size: 32px;
        line-height: 1.2;
        font-weight: 900;
        letter-spacing: -0.02em;
        color: var(--text-hi);
        margin: 8px 0 0;
    }

    .section-subtitle {
        margin-top: 12px;
        color: var(--text-mid);
        font-size: 16px;
        line-height: 1.7;
    }

    @media (max-width: 768px) {
        .section-title {
            font-size: 26px;
        }
    }

    /* ===== 特性卡片 ===== */
    .feature-card {
        background: var(--bg-card);
        border: 1px solid var(--line);
        border-radius: 16px;
        padding: 28px 24px;
        position: relative;
        overflow: hidden;
        transition: transform .25s, box-shadow .25s, border-color .25s;
    }

    .feature-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 2px;
        background: linear-gradient(90deg, var(--primary), var(--accent));
        opacity: 0.7;
    }

    .feature-card:hover {
        transform: translateY(-4px);
        box-shadow: 0 12px 32px rgba(56, 189, 248, 0.15);
        border-color: rgba(56, 189, 248, 0.35);
    }

    .feature-card .feature-icon {
        width: 44px;
        height: 44px;
        border-radius: 12px;
        background: rgba(56, 189, 248, 0.14);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--primary);
        margin-bottom: 16px;
    }

    .feature-card h3 {
        font-size: 17px;
        font-weight: 700;
        color: var(--text-hi);
        margin: 0 0 8px;
    }

    .feature-card p {
        font-size: 14px;
        color: var(--text-mid);
        line-height: 1.7;
        margin: 0;
    }

    /* ===== 时间线 ===== */
    .timeline-section {
        background: rgba(15, 23, 42, 0.4);
        border-top: 1px solid var(--line);
        border-bottom: 1px solid var(--line);
    }

    .timeline {
        position: relative;
        max-width: 840px;
        margin: 0 auto;
        padding: 20px 0;
    }

    .timeline::before {
        content: '';
        position: absolute;
        left: 28px;
        top: 20px;
        bottom: 20px;
        width: 2px;
        background: linear-gradient(180deg, var(--primary), rgba(56, 189, 248, 0.1));
    }

    .timeline-item {
        position: relative;
        padding-left: 76px;
        margin-bottom: 36px;
    }

    .timeline-item:last-child {
        margin-bottom: 0;
    }

    .timeline-dot {
        position: absolute;
        left: 18px;
        top: 4px;
        width: 22px;
        height: 22px;
        border-radius: 50%;
        background: var(--bg-deep);
        border: 3px solid var(--primary);
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .timeline-dot::after {
        content: '';
        width: 6px;
        height: 6px;
        border-radius: 50%;
        background: var(--primary);
    }

    .timeline-num {
        position: absolute;
        left: -6px;
        top: 50px;
        font-size: 11px;
        color: var(--text-low);
        font-weight: 700;
    }

    .timeline-item h3 {
        font-size: 17px;
        font-weight: 700;
        color: var(--text-hi);
        margin: 0 0 4px;
    }

    .timeline-item p {
        font-size: 14px;
        color: var(--text-mid);
        margin: 0;
        line-height: 1.75;
    }

    @media (max-width: 640px) {
        .timeline::before {
            left: 18px;
        }
        .timeline-item {
            padding-left: 56px;
        }
        .timeline-dot {
            left: 8px;
        }
    }

    /* ===== 赛程数据 ===== */
    .stats-row {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 16px;
        margin-bottom: 40px;
    }

    .stat-block {
        background: var(--bg-card);
        border: 1px solid var(--line);
        border-radius: 14px;
        padding: 20px 16px;
        text-align: center;
        transition: border-color .2s, transform .2s;
    }

    .stat-block:hover {
        border-color: rgba(56, 189, 248, 0.35);
        transform: translateY(-2px);
    }

    .stat-num {
        font-size: 30px;
        font-weight: 900;
        color: var(--primary);
        letter-spacing: -0.02em;
        line-height: 1.2;
        font-variant-numeric: tabular-nums;
    }

    .stat-label {
        font-size: 13px;
        color: var(--text-mid);
        margin-top: 4px;
    }

    @media (max-width: 640px) {
        .stats-row {
            grid-template-columns: repeat(2, 1fr);
        }
    }

    .match-card {
        background: var(--bg-card);
        border: 1px solid var(--line);
        border-radius: 16px;
        padding: 22px 24px;
        display: flex;
        align-items: center;
        gap: 20px;
        transition: transform .2s, box-shadow .2s, border-color .2s;
    }

    .match-card:hover {
        transform: translateY(-3px);
        box-shadow: 0 10px 24px rgba(56, 189, 248, 0.1);
        border-color: rgba(56, 189, 248, 0.3);
    }

    .match-time {
        font-size: 24px;
        font-weight: 900;
        color: var(--text-hi);
        letter-spacing: -0.02em;
        font-variant-numeric: tabular-nums;
        min-width: 64px;
    }

    .match-info h3 {
        font-size: 16px;
        font-weight: 700;
        color: var(--text-hi);
        margin: 0 0 2px;
    }

    .match-info p {
        font-size: 13px;
        color: var(--text-low);
        margin: 0;
    }

    .match-status {
        margin-left: auto;
        font-size: 12px;
        font-weight: 700;
        padding: 5px 12px;
        border-radius: 999px;
        white-space: nowrap;
        flex-shrink: 0;
    }

    .match-status.live {
        background: rgba(244, 63, 94, 0.15);
        color: var(--danger);
    }

    .match-status.upcoming {
        background: rgba(56, 189, 248, 0.12);
        color: var(--primary);
    }

    .match-status.ended {
        background: rgba(148, 163, 184, 0.1);
        color: var(--text-mid);
    }

    /* ===== 图文区 ===== */
    .split-block {
        display: grid;
        grid-template-columns: 1fr;
        gap: 40px;
        align-items: center;
    }

    @media (min-width: 1024px) {
        .split-block {
            grid-template-columns: 1fr 1fr;
        }
    }

    .split-block .split-img {
        border-radius: 16px;
        overflow: hidden;
        border: 1px solid var(--line);
        box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
        position: relative;
    }

    .split-block .split-img img {
        width: 100%;
        height: 280px;
        object-fit: cover;
    }

    .split-block .split-content h3 {
        font-size: 22px;
        font-weight: 800;
        color: var(--text-hi);
        margin: 0 0 12px;
        letter-spacing: -0.01em;
    }

    .split-block .split-content p {
        font-size: 15px;
        color: var(--text-mid);
        line-height: 1.8;
        margin: 0 0 16px;
    }

    .split-block .split-content .check-item {
        display: flex;
        align-items: flex-start;
        gap: 10px;
        font-size: 14px;
        color: var(--text-hi);
        margin-bottom: 10px;
    }

    .split-block .split-content .check-item svg {
        flex-shrink: 0;
        margin-top: 3px;
        color: var(--primary);
    }

    /* ===== FAQ ===== */
    .faq-box {
        max-width: 800px;
        margin: 0 auto;
    }

    .faq-item {
        background: var(--bg-card);
        border: 1px solid var(--line);
        border-radius: 12px;
        margin-bottom: 12px;
        overflow: hidden;
        transition: border-color .2s;
    }

    .faq-item.faq-open {
        border-color: rgba(56, 189, 248, 0.4);
    }

    .faq-question {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        padding: 18px 22px;
        cursor: pointer;
        font-size: 15px;
        font-weight: 600;
        color: var(--text-hi);
        user-select: none;
        transition: color .2s;
    }

    .faq-question:hover {
        color: var(--primary);
    }

    .faq-arrow {
        flex-shrink: 0;
        transition: transform .3s ease;
        color: var(--text-mid);
    }

    .faq-item.faq-open .faq-arrow {
        transform: rotate(180deg);
        color: var(--primary);
    }

    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height .3s ease, padding .3s ease;
        padding: 0 22px;
    }

    .faq-item.faq-open .faq-answer {
        max-height: 400px;
        padding: 0 22px 18px;
    }

    .faq-answer p {
        font-size: 14px;
        color: var(--text-mid);
        line-height: 1.75;
        margin: 0;
        border-left: 3px solid var(--primary);
        padding-left: 14px;
    }

    /* ===== CTA ===== */
    .cta-section {
        position: relative;
        background: var(--bg-card);
        border-top: 1px solid var(--line);
        border-bottom: 1px solid var(--line);
        overflow: hidden;
    }

    .cta-box {
        text-align: center;
        padding: 56px 24px;
        position: relative;
        z-index: 1;
    }

    .cta-box h2 {
        font-size: 28px;
        font-weight: 900;
        color: var(--text-hi);
        letter-spacing: -0.02em;
        margin: 0 0 12px;
    }

    .cta-box p {
        font-size: 15px;
        color: var(--text-mid);
        margin: 0 0 28px;
    }

    .cta-glow {
        position: absolute;
        bottom: -100px;
        left: 50%;
        transform: translateX(-50%);
        width: 400px;
        height: 300px;
        background: rgba(56, 189, 248, 0.12);
        border-radius: 50%;
        filter: blur(90px);
        pointer-events: none;
    }

    /* ===== Footer ===== */
    .site-footer {
        background: #0a0f1c;
        border-top: 1px solid var(--line);
        margin-top: auto;
    }

    .footer-logo {
        font-size: 20px;
        font-weight: 900;
        color: var(--text-hi);
        letter-spacing: -0.02em;
    }

    .footer-heading {
        font-size: 14px;
        font-weight: 700;
        color: var(--text-hi);
        margin: 0 0 14px;
    }

    .footer-links {
        list-style: none;
        padding: 0;
        margin: 0;
    }

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

    .footer-links a {
        font-size: 14px;
        color: var(--text-mid);
        transition: color .2s;
    }

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

    /* ===== 页面上方留白（移动端顶栏） ===== */
    .page-top-spacer {
        height: 56px;
    }

    @media (min-width: 1024px) {
        .page-top-spacer {
            display: none;
        }
    }

    /* ===== 通用区块间距 ===== */
    .section-padding {
        padding: 64px 0;
    }

    @media (min-width: 768px) {
        .section-padding {
            padding: 80px 0;
        }
    }

    /* ===== 小徽章 ===== */
    .badge-cyan {
        display: inline-block;
        font-size: 12px;
        font-weight: 600;
        color: var(--primary);
        background: rgba(56, 189, 248, 0.12);
        padding: 4px 12px;
        border-radius: 999px;
    }

    /* ===== 面包屑 ===== */
    .breadcrumb {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 13px;
        color: var(--text-low);
        margin-bottom: 20px;
    }

    .breadcrumb a {
        color: var(--text-mid);
        transition: color .2s;
    }

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

    .breadcrumb .sep {
        color: var(--text-low);
    }

    .breadcrumb .current {
        color: var(--primary);
    }

/* roulang page: article */
:root {
  --bg-deep: #0b1220;
  --bg-card: #111a2e;
  --bg-elevated: #17223a;
  --primary: #38bdf8;
  --primary-light: #7dd3fc;
  --primary-dark: #0284c7;
  --accent: #22d3ee;
  --danger: #f43f5e;
  --text-hi: #f1f5f9;
  --text-mid: #94a3b8;
  --text-low: #64748b;
  --line: rgba(148,163,184,0.14);
  --btn-grad: linear-gradient(135deg, #38bdf8, #0ea5e9);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background-color: var(--bg-deep);
  background-image: radial-gradient(rgba(56, 189, 248, 0.04) 1px, transparent 1px);
  background-size: 24px 24px;
  color: var(--text-hi);
  line-height: 1.75;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

.container-main {
  max-width: 1152px;
  margin: 0 auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

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

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

button,
input {
  font-family: inherit;
}

/* ========== 左侧导航 ========== */
.side-nav {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: 80px;
  background: #0f172a;
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  align-items: center;
  z-index: 50;
  padding: 1.25rem 0;
}

.side-nav-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
  padding: 0 0.25rem;
}

.brand-dot {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  box-shadow: 0 0 20px rgba(56, 189, 248, 0.35);
  position: relative;
}

.brand-dot::after {
  content: '';
  position: absolute;
  inset: 6px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.25);
}

.brand-text {
  font-size: 10px;
  font-weight: 800;
  color: var(--primary-light);
  text-align: center;
  line-height: 1.35;
  letter-spacing: -0.01em;
}

.side-nav-items {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  width: 100%;
  padding: 0 0.5rem;
}

.side-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  padding: 0.7rem 0.25rem;
  border-radius: 12px;
  color: var(--text-mid);
  font-size: 11px;
  font-weight: 500;
  position: relative;
  transition: all 0.2s ease;
  text-align: center;
  cursor: pointer;
}

.side-nav-item:hover {
  color: var(--primary-light);
  background: rgba(56, 189, 248, 0.08);
}

.side-nav-item.active {
  color: var(--primary);
}

.side-nav-item.active::before {
  content: '';
  position: absolute;
  left: -0.5rem;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 24px;
  border-radius: 0 3px 3px 0;
  background: var(--primary);
  box-shadow: 0 0 12px rgba(56, 189, 248, 0.5);
}

.side-nav-footer {
  margin-top: auto;
  width: 100%;
  padding: 0 0.5rem;
}

/* ========== 移动端顶栏 & 抽屉 ========== */
.mobile-header {
  display: none;
}

.drawer-overlay {
  display: none;
}

.drawer {
  display: none;
}

/* ========== 按钮 ========== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--btn-grad);
  color: #ffffff;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.75rem 1.5rem;
  border-radius: 12px;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 4px 16px rgba(56, 189, 248, 0.2);
}

.btn-primary:hover {
  filter: brightness(1.15);
  transform: scale(1.02);
  box-shadow: 0 6px 24px rgba(56, 189, 248, 0.3);
}

.btn-primary:active {
  transform: scale(0.98);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: transparent;
  color: var(--primary);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.75rem 1.5rem;
  border-radius: 12px;
  border: 1px solid rgba(56, 189, 248, 0.6);
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-secondary:hover {
  background: rgba(56, 189, 248, 0.1);
  border-color: var(--primary);
}

.btn-sm {
  padding: 0.45rem 1rem;
  font-size: 0.85rem;
  border-radius: 10px;
}

/* ========== 主内容布局 ========== */
.main-wrapper {
  margin-left: 80px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.main-content {
  flex: 1;
}

/* ========== 面包屑 ========== */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-size: 13px;
  color: var(--text-low);
  margin-bottom: 1.75rem;
}

.breadcrumb a {
  color: var(--text-mid);
  transition: color 0.2s;
}

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

.breadcrumb .sep {
  color: var(--text-low);
  opacity: 0.5;
}

.breadcrumb .current {
  color: var(--text-low);
  max-width: 220px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ========== 文章头 ========== */
.article-header {
  margin-bottom: 2.5rem;
}

.article-title {
  font-size: 2rem;
  line-height: 1.3;
  font-weight: 900;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
  color: var(--text-hi);
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  font-size: 13px;
  color: var(--text-mid);
}

.article-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
}

.article-meta-item svg {
  width: 14px;
  height: 14px;
  color: var(--text-low);
}

/* ========== 正文排版 ========== */
.article-body {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-hi);
}

.article-body p {
  margin-bottom: 1.25rem;
}

.article-body h2 {
  font-size: 1.45rem;
  font-weight: 800;
  margin: 2.25rem 0 1rem;
  letter-spacing: -0.01em;
  line-height: 1.4;
}

.article-body h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 1.75rem 0 0.75rem;
  line-height: 1.4;
}

.article-body img {
  border-radius: 16px;
  margin: 1.5rem 0;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
}

.article-body blockquote {
  border-left: 4px solid var(--primary);
  padding: 0.75rem 1.25rem;
  margin: 1.5rem 0;
  background: rgba(56, 189, 248, 0.06);
  border-radius: 0 12px 12px 0;
  color: var(--text-mid);
  font-style: normal;
}

.article-body a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color 0.2s;
}

.article-body a:hover {
  color: var(--primary-light);
}

.article-body ul,
.article-body ol {
  margin: 1rem 0;
  padding-left: 1.5rem;
}

.article-body li {
  margin-bottom: 0.5rem;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 15px;
}

.article-body th,
.article-body td {
  padding: 0.75rem 1rem;
  border: 1px solid var(--line);
  text-align: left;
}

.article-body th {
  background: var(--bg-elevated);
  font-weight: 600;
  color: var(--text-hi);
}

/* ========== 内容未找到 ========== */
.not-found-box {
  text-align: center;
  padding: 4rem 2rem;
  border: 1px dashed var(--line);
  border-radius: 16px;
  background: var(--bg-card);
}

.not-found-box .icon-circle {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(56, 189, 248, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  color: var(--primary);
}

.not-found-box p {
  font-size: 1.1rem;
  color: var(--text-mid);
  margin-bottom: 1.75rem;
}

/* ========== 标签行 ========== */
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 2.5rem 0 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}

.tag-item {
  display: inline-block;
  padding: 0.3rem 0.875rem;
  font-size: 12px;
  color: var(--primary);
  background: rgba(56, 189, 248, 0.1);
  border-radius: 999px;
  font-weight: 500;
  border: 1px solid rgba(56, 189, 248, 0.15);
  transition: all 0.2s;
}

.tag-item:hover {
  background: rgba(56, 189, 248, 0.2);
  border-color: rgba(56, 189, 248, 0.4);
}

/* ========== 上一篇 / 下一篇 ========== */
.article-pagination {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 2rem 0 3rem;
}

.pagination-link {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 1.1rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 12px;
  font-size: 14px;
  color: var(--text-mid);
  transition: all 0.25s ease;
}

.pagination-link:hover {
  border-color: rgba(56, 189, 248, 0.35);
  color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(56, 189, 248, 0.08);
}

.pagination-label {
  font-size: 11px;
  color: var(--text-low);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ========== 相关推荐 ========== */
.related-section {
  margin-top: 3rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--line);
}

.related-title {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
  letter-spacing: -0.01em;
  color: var(--text-hi);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.related-card {
  background: var(--bg-card);
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--line);
  transition: all 0.3s ease;
  display: block;
  height: 100%;
}

.related-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(56, 189, 248, 0.1);
  border-color: rgba(56, 189, 248, 0.35);
}

.related-card-img {
  width: 100%;
  height: 160px;
  object-fit: cover;
}

.related-card-body {
  padding: 1rem 1.1rem 1.2rem;
}

.related-card-title {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  color: var(--text-hi);
}

.related-card:hover .related-card-title {
  color: var(--primary-light);
}

/* ========== 返回首页 CTA ========== */
.back-home-cta {
  text-align: center;
  margin-top: 3.5rem;
  padding: 3rem 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 16px;
  position: relative;
  overflow: hidden;
}

.back-home-cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
}

.back-home-cta h3 {
  font-size: 1.3rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.back-home-cta p {
  color: var(--text-mid);
  font-size: 14px;
  margin-bottom: 1.5rem;
}

/* ========== 页脚 ========== */
.site-footer {
  background: #0a0f1c;
  border-top: 1px solid var(--line);
}

.footer-logo {
  font-size: 1.2rem;
  font-weight: 900;
  color: var(--text-hi);
  letter-spacing: -0.02em;
}

.footer-heading {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-hi);
  margin-bottom: 0.75rem;
}

.footer-links {
  list-style: none;
  padding: 0;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  font-size: 13px;
  color: var(--text-mid);
  transition: color 0.2s;
}

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

/* ========== 动画 ========== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-in {
  animation: fadeInUp 0.6s ease both;
}

/* ========== 响应式 ========== */
@media (max-width: 1023px) {
  .side-nav {
    width: 72px;
  }
  .main-wrapper {
    margin-left: 72px;
  }
  .brand-text {
    font-size: 9px;
  }
}

@media (max-width: 767px) {
  .side-nav {
    display: none;
  }

  .mobile-header {
    display: flex;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 56px;
    background: rgba(11, 18, 32, 0.96);
    border-bottom: 1px solid var(--line);
    align-items: center;
    justify-content: space-between;
    padding: 0 1rem;
    z-index: 40;
    backdrop-filter: blur(10px);
  }

  .mobile-header-left {
    display: flex;
    align-items: center;
    gap: 0.5rem;
  }

  .mobile-menu-btn {
    background: none;
    border: none;
    color: var(--text-hi);
    font-size: 1.25rem;
    padding: 0.4rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    transition: background 0.2s;
  }

  .mobile-menu-btn:hover {
    background: rgba(255, 255, 255, 0.08);
  }

  .mobile-logo {
    font-size: 1rem;
    font-weight: 900;
    color: var(--text-hi);
    letter-spacing: -0.02em;
    white-space: nowrap;
  }

  .mobile-header-right {
    display: flex;
    align-items: center;
  }

  .main-wrapper {
    margin-left: 0;
    padding-top: 56px;
  }

  .container-main {
    padding-left: 1.1rem;
    padding-right: 1.1rem;
  }

  .article-title {
    font-size: 1.45rem;
    line-height: 1.35;
  }

  .article-body {
    font-size: 15.5px;
  }

  .article-body h2 {
    font-size: 1.25rem;
  }

  .article-body h3 {
    font-size: 1.1rem;
  }

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

  .article-pagination {
    grid-template-columns: 1fr;
  }

  .breadcrumb .current {
    max-width: 150px;
  }

  .back-home-cta {
    padding: 2.5rem 1.25rem;
  }

  /* 抽屉 */
  .drawer-overlay.show {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 55;
    animation: fadeIn 0.2s ease both;
  }

  .drawer.show {
    display: flex;
    flex-direction: column;
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: 260px;
    background: #0f172a;
    z-index: 60;
    padding: 1.5rem;
    box-shadow: 4px 0 30px rgba(0, 0, 0, 0.5);
    animation: slideInLeft 0.25s ease both;
  }

  .drawer-brand {
    font-size: 1.3rem;
    font-weight: 900;
    color: var(--text-hi);
    letter-spacing: -0.02em;
    margin-bottom: 2.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--line);
  }

  .drawer-nav {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    flex: 1;
  }

  .drawer-nav a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.8rem 0.875rem;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-mid);
    transition: all 0.2s;
  }

  .drawer-nav a:hover,
  .drawer-nav a.active {
    color: var(--primary);
    background: rgba(56, 189, 248, 0.08);
  }

  .drawer-footer {
    font-size: 11px;
    color: var(--text-low);
    padding-top: 1rem;
    border-top: 1px solid var(--line);
  }

  @keyframes fadeIn {
    from {
      opacity: 0;
    }
    to {
      opacity: 1;
    }
  }

  @keyframes slideInLeft {
    from {
      transform: translateX(-100%);
    }
    to {
      transform: translateX(0);
    }
  }
}

@media (max-width: 480px) {
  .mobile-logo {
    font-size: 0.9rem;
  }

  .mobile-header-right .btn-sm {
    display: none;
  }

  .breadcrumb {
    font-size: 12px;
  }

  .article-meta {
    gap: 0.75rem;
    font-size: 12px;
    flex-direction: column;
    align-items: flex-start;
  }
}

/* roulang page: category2 */
:root {
    --bg-deep: #0b1220;
    --bg-card: #111a2e;
    --bg-elevated: #17223a;
    --primary: #38bdf8;
    --primary-light: #7dd3fc;
    --primary-dark: #0284c7;
    --accent: #22d3ee;
    --danger: #f43f5e;
    --text-hi: #f1f5f9;
    --text-mid: #94a3b8;
    --text-low: #64748b;
    --line: rgba(148, 163, 184, 0.14);
    --btn-grad: linear-gradient(135deg, #38bdf8, #0ea5e9);
  }

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

  html {
    scroll-behavior: smooth;
  }

  body {
    background-color: var(--bg-deep);
    color: var(--text-hi);
    font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "sans-serif";
    font-size: 16px;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
  }

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

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

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

  input {
    font-family: inherit;
  }

  .container-main {
    max-width: 1152px;
    margin: 0 auto;
    padding-left: 24px;
    padding-right: 24px;
  }

  /* ==================== 左侧桌面导航 ==================== */
  .side-nav {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: 80px;
    background: #0f172a;
    border-right: 1px solid var(--line);
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px 0 16px;
    z-index: 50;
  }

  .side-nav-logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 6px 0 18px;
    width: 100%;
  }

  .side-nav-logo-icon {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, #38bdf8, #0284c7);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 20px rgba(56, 189, 248, 0.25);
  }

  .side-nav-logo-text {
    font-size: 10px;
    font-weight: 700;
    color: #e0f2fe;
    letter-spacing: 0.02em;
    white-space: nowrap;
  }

  .side-nav-items {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    padding-top: 8px;
    flex: 1;
  }

  .side-nav-item {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    width: 64px;
    padding: 10px 0;
    border-radius: 12px;
    color: #94a3b8;
    font-size: 11px;
    font-weight: 500;
    transition: all 0.2s ease;
    margin-bottom: 4px;
  }

  .side-nav-item svg {
    transition: stroke 0.2s ease;
  }

  .side-nav-item:hover {
    color: var(--primary-light);
    background: rgba(56, 189, 248, 0.06);
  }

  .side-nav-item.active {
    color: var(--primary);
    background: rgba(56, 189, 248, 0.08);
  }

  .side-nav-item.active::before {
    content: "";
    position: absolute;
    left: -8px;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 24px;
    border-radius: 0 4px 4px 0;
    background: var(--primary);
    box-shadow: 0 0 12px rgba(56, 189, 248, 0.5);
  }

  .side-nav-bottom {
    padding-top: 16px;
    border-top: 1px solid var(--line);
    width: 100%;
    display: flex;
    justify-content: center;
    padding-top: 14px;
  }

  .side-nav-bottom a {
    color: #64748b;
    padding: 8px;
    border-radius: 8px;
    transition: all 0.2s ease;
  }

  .side-nav-bottom a:hover {
    color: var(--primary);
    background: rgba(56, 189, 248, 0.06);
  }

  /* ==================== 移动端顶栏 ==================== */
  .mobile-header {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 56px;
    background: #0f172a;
    border-bottom: 1px solid var(--line);
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    z-index: 60;
  }

  .mobile-header-logo {
    font-size: 15px;
    font-weight: 800;
    color: #e0f2fe;
    letter-spacing: -0.01em;
  }

  .mobile-header-btn {
    background: var(--btn-grad);
    color: #fff;
    font-size: 13px;
    font-weight: 600;
    padding: 7px 14px;
    border-radius: 10px;
    border: none;
    transition: all 0.2s ease;
  }

  .mobile-header-btn:hover {
    filter: brightness(1.15);
  }

  .hamburger-btn {
    background: transparent;
    border: none;
    color: #94a3b8;
    padding: 6px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .hamburger-btn:hover {
    background: rgba(148, 163, 184, 0.1);
    color: #f1f5f9;
  }

  /* ==================== 移动端抽屉 ==================== */
  .mobile-drawer-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(11, 18, 32, 0.72);
    z-index: 70;
    opacity: 0;
    transition: opacity 0.3s ease;
  }

  .mobile-drawer-overlay.show {
    display: block;
    opacity: 1;
  }

  .mobile-drawer {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 256px;
    background: #0f172a;
    z-index: 80;
    transform: translateX(-100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    padding: 24px 20px;
  }

  .mobile-drawer.open {
    transform: translateX(0);
  }

  .mobile-drawer-logo {
    font-size: 20px;
    font-weight: 900;
    color: #e0f2fe;
    letter-spacing: -0.02em;
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 10px;
  }

  .mobile-drawer-sub {
    font-size: 12px;
    color: #64748b;
    margin-bottom: 28px;
    padding-left: 2px;
  }

  .mobile-drawer-nav {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
  }

  .mobile-drawer-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    border-radius: 12px;
    color: #94a3b8;
    font-size: 15px;
    font-weight: 500;
    transition: all 0.2s ease;
  }

  .mobile-drawer-nav a:hover {
    color: var(--primary-light);
    background: rgba(56, 189, 248, 0.06);
  }

  .mobile-drawer-nav a.active {
    color: var(--primary);
    background: rgba(56, 189, 248, 0.1);
    font-weight: 600;
  }

  .mobile-drawer-footer {
    border-top: 1px solid var(--line);
    padding-top: 16px;
    font-size: 12px;
    color: #64748b;
  }

  /* ==================== 主内容区 ==================== */
  .main-content {
    margin-left: 80px;
  }

  @media (max-width: 1023px) {
    .side-nav {
      display: none;
    }
    .mobile-header {
      display: flex;
    }
    .main-content {
      margin-left: 0;
      padding-top: 56px;
    }
  }

  /* ==================== 按钮 ==================== */
  .btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: var(--btn-grad);
    color: #fff;
    font-weight: 600;
    font-size: 15px;
    padding: 14px 28px;
    border-radius: 12px;
    border: none;
    transition: all 0.2s ease;
    box-shadow: 0 4px 20px rgba(56, 189, 248, 0.2);
  }

  .btn-primary:hover {
    filter: brightness(1.15);
    transform: scale(1.02);
    box-shadow: 0 6px 28px rgba(56, 189, 248, 0.35);
  }

  .btn-primary:active {
    transform: scale(0.98);
  }

  .btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: transparent;
    color: var(--primary);
    font-weight: 600;
    font-size: 15px;
    padding: 14px 28px;
    border-radius: 12px;
    border: 1.5px solid rgba(56, 189, 248, 0.4);
    transition: all 0.2s ease;
  }

  .btn-ghost:hover {
    background: rgba(56, 189, 248, 0.1);
    border-color: var(--primary);
    transform: translateY(-2px);
  }

  .btn-ghost:active {
    transform: translateY(0) scale(0.98);
  }

  .btn-small {
    font-size: 13px;
    padding: 8px 16px;
    border-radius: 10px;
  }

  /* ==================== 板块通用 ==================== */
  .section {
    padding: 64px 0;
  }

  @media (min-width: 768px) {
    .section {
      padding: 80px 0;
    }
  }

  .section-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    color: var(--primary);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 12px;
  }

  .section-label::before {
    content: "";
    width: 20px;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
  }

  .section-title {
    font-size: 28px;
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.3;
    color: var(--text-hi);
    margin-bottom: 12px;
  }

  @media (min-width: 768px) {
    .section-title {
      font-size: 34px;
    }
  }

  .section-subtitle {
    font-size: 15px;
    color: var(--text-mid);
    max-width: 560px;
    line-height: 1.7;
  }

  /* ==================== Hero ==================== */
  .hero {
    position: relative;
    min-height: 480px;
    display: flex;
    align-items: center;
    background-size: cover;
    background-position: center;
    overflow: hidden;
  }

  .hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(11, 18, 32, 0.95) 0%, rgba(11, 18, 32, 0.78) 46%, rgba(11, 18, 32, 0.35) 100%);
  }

  .hero-glow {
    position: absolute;
    top: -80px;
    right: -60px;
    width: 380px;
    height: 380px;
    background: radial-gradient(circle, rgba(56, 189, 248, 0.18) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
  }

  .hero-content {
    position: relative;
    z-index: 2;
    padding: 80px 0;
  }

  .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(56, 189, 248, 0.1);
    border: 1px solid rgba(56, 189, 248, 0.25);
    color: var(--primary-light);
    font-size: 13px;
    font-weight: 500;
    padding: 6px 14px;
    border-radius: 999px;
    margin-bottom: 20px;
  }

  .hero-badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--danger);
    box-shadow: 0 0 10px var(--danger);
    animation: pulse-dot 1.8s ease infinite;
  }

  @keyframes pulse-dot {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
  }

  .hero-title {
    font-size: 36px;
    font-weight: 900;
    letter-spacing: -0.03em;
    line-height: 1.2;
    color: var(--text-hi);
    margin-bottom: 18px;
  }

  @media (min-width: 768px) {
    .hero-title {
      font-size: 48px;
    }
  }

  .hero-title .highlight {
    background: linear-gradient(120deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
  }

  .hero-subtitle {
    font-size: 16px;
    color: var(--text-mid);
    max-width: 560px;
    line-height: 1.8;
    margin-bottom: 32px;
  }

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

  /* ==================== 卖点卡片 ==================== */
  .feature-card {
    background: var(--bg-card);
    border: 1px solid var(--line);
    border-top: 2px solid var(--primary);
    border-radius: 16px;
    padding: 28px 24px;
    transition: all 0.3s ease;
  }

  .feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(56, 189, 248, 0.15);
    border-color: rgba(56, 189, 248, 0.35);
  }

  .feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(56, 189, 248, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    margin-bottom: 16px;
  }

  .feature-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-hi);
    margin-bottom: 8px;
  }

  .feature-desc {
    font-size: 14px;
    color: var(--text-mid);
    line-height: 1.7;
  }

  /* ==================== 时间线 ==================== */
  .timeline {
    position: relative;
    padding: 20px 0;
  }

  .timeline-line {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, transparent, var(--primary), transparent);
    transform: translateX(-50%);
  }

  .timeline-item {
    position: relative;
    display: flex;
    align-items: flex-start;
    margin-bottom: 48px;
  }

  .timeline-item:last-child {
    margin-bottom: 0;
  }

  .timeline-item:nth-child(even) {
    flex-direction: row-reverse;
  }

  .timeline-dot {
    position: absolute;
    left: 50%;
    top: 24px;
    transform: translateX(-50%);
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--bg-deep);
    border: 3px solid var(--primary);
    box-shadow: 0 0 16px rgba(56, 189, 248, 0.4);
    z-index: 2;
  }

  .timeline-card {
    width: calc(50% - 56px);
    background: var(--bg-card);
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 24px;
    transition: all 0.3s ease;
  }

  .timeline-card:hover {
    border-color: rgba(56, 189, 248, 0.35);
    box-shadow: 0 8px 24px rgba(56, 189, 248, 0.12);
    transform: translateY(-2px);
  }

  .timeline-phase {
    font-size: 12px;
    font-weight: 600;
    color: var(--primary);
    letter-spacing: 0.04em;
    margin-bottom: 6px;
  }

  .timeline-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-hi);
    margin-bottom: 8px;
  }

  .timeline-desc {
    font-size: 14px;
    color: var(--text-mid);
    line-height: 1.7;
  }

  @media (max-width: 768px) {
    .timeline-line {
      left: 16px;
    }
    .timeline-item {
      flex-direction: column !important;
      padding-left: 44px;
    }
    .timeline-dot {
      left: 16px;
      top: 28px;
    }
    .timeline-card {
      width: 100%;
    }
  }

  /* ==================== 场景卡片 ==================== */
  .scenario-card {
    background: var(--bg-card);
    border: 1px solid var(--line);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s ease;
  }

  .scenario-card:hover {
    border-color: rgba(56, 189, 248, 0.35);
    box-shadow: 0 12px 32px rgba(56, 189, 248, 0.12);
    transform: translateY(-4px);
  }

  .scenario-img {
    height: 160px;
    object-fit: cover;
    width: 100%;
    transition: transform 0.4s ease;
  }

  .scenario-card:hover .scenario-img {
    transform: scale(1.03);
  }

  .scenario-body {
    padding: 20px;
  }

  .scenario-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-hi);
    margin-bottom: 6px;
  }

  .scenario-desc {
    font-size: 13px;
    color: var(--text-mid);
    line-height: 1.7;
  }

  /* ==================== 数据统计 ==================== */
  .stats-section {
    background: var(--bg-card);
    border-top: 2px solid var(--primary);
    border-bottom: 2px solid var(--primary);
  }

  .stat-item {
    text-align: center;
    padding: 28px 12px;
  }

  .stat-number {
    font-size: 40px;
    font-weight: 900;
    color: var(--text-hi);
    letter-spacing: -0.02em;
    font-family: "SF Mono", "Fira Code", monospace;
  }

  .stat-number span {
    color: var(--primary);
  }

  .stat-label {
    font-size: 14px;
    color: var(--text-mid);
    margin-top: 4px;
  }

  /* ==================== 流程步骤 ==================== */
  .step-item {
    position: relative;
    padding-left: 56px;
  }

  .step-number {
    position: absolute;
    left: 0;
    top: 0;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(56, 189, 248, 0.12);
    border: 1.5px solid var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    font-weight: 800;
    color: var(--primary);
  }

  .step-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-hi);
    margin-bottom: 6px;
  }

  .step-desc {
    font-size: 14px;
    color: var(--text-mid);
    line-height: 1.7;
  }

  /* ==================== FAQ ==================== */
  .faq-item {
    background: var(--bg-card);
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 16px 20px;
    margin-bottom: 10px;
    transition: border-color 0.2s ease;
  }

  .faq-item.open {
    border-color: rgba(56, 189, 248, 0.35);
  }

  .faq-item.open .faq-question::after {
    transform: rotate(45deg);
  }

  .faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-hi);
    cursor: pointer;
    padding: 4px 0;
    font-family: inherit;
    background: transparent;
    border: none;
    width: 100%;
    text-align: left;
    font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "sans-serif";
  }

  .faq-question::after {
    content: "+";
    font-size: 22px;
    font-weight: 400;
    color: var(--primary);
    transition: transform 0.25s ease;
    flex-shrink: 0;
    margin-left: 12px;
  }

  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    font-size: 14px;
    color: var(--text-mid);
    line-height: 1.75;
  }

  .faq-answer-inner {
    padding-top: 12px;
    padding-bottom: 4px;
  }

  .faq-item.open .faq-answer {
    max-height: 400px;
  }

  /* ==================== CTA 区块 ==================== */
  .cta-section {
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    background: linear-gradient(180deg, var(--bg-card) 0%, var(--bg-deep) 100%);
    position: relative;
  }

  .cta-glow {
    position: absolute;
    bottom: -60px;
    left: 50%;
    transform: translateX(-50%);
    width: 320px;
    height: 320px;
    background: radial-gradient(circle, rgba(56, 189, 248, 0.12), transparent 70%);
    border-radius: 50%;
    pointer-events: none;
  }

  .cta-title {
    font-size: 26px;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--text-hi);
    margin-bottom: 8px;
  }

  @media (min-width: 768px) {
    .cta-title {
      font-size: 32px;
    }
  }

  .cta-subtitle {
    font-size: 15px;
    color: var(--text-mid);
    margin-bottom: 24px;
  }

  /* ==================== 页脚 ==================== */
  .site-footer {
    background: #0a0f1c;
    border-top: 1px solid var(--line);
  }

  .footer-logo {
    font-size: 20px;
    font-weight: 900;
    color: #e0f2fe;
    letter-spacing: -0.02em;
  }

  .footer-heading {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-hi);
    margin-bottom: 14px;
  }

  .footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
  }

  .footer-links a {
    font-size: 14px;
    color: var(--text-mid);
    transition: color 0.2s ease;
  }

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

  /* ==================== 焦点状态 ==================== */
  a:focus-visible,
  button:focus-visible,
  input:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    border-radius: 4px;
  }

  /* ==================== 自定义滚动条 ==================== */
  ::-webkit-scrollbar {
    width: 6px;
    height: 6px;
  }

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

  ::-webkit-scrollbar-thumb {
    background: rgba(56, 189, 248, 0.3);
    border-radius: 3px;
  }

  ::-webkit-scrollbar-thumb:hover {
    background: rgba(56, 189, 248, 0.5);
  }