/* =========================================================
   DBG 外汇平台 - 全站样式
   主色：深蓝 #0a1e3f + 金色 #f0b90b
   ========================================================= */

/* ========== 基础重置 ========== */
*{margin:0;padding:0;box-sizing:border-box}
:root{
  --navy:#0a1e3f;
  --navy-2:#122a56;
  --blue:#1e40af;
  --blue-light:#3b82f6;
  --gold:#f0b90b;
  --gold-dark:#d4a017;
  --bg:#f7f9fc;
  --card:#ffffff;
  --text:#1a2233;
  --text-light:#5a6a85;
  --line:#e6ebf2;
}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
     color:var(--text);line-height:1.7;background:var(--bg);font-size:15px;
     -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
a{text-decoration:none;color:inherit;transition:.25s}
ul,ol{list-style:none}
img{max-width:100%;height:auto;display:block}
button{font-family:inherit;cursor:pointer}
input,textarea,select{font-family:inherit;font-size:inherit;outline:none}
.container{max-width:1240px;margin:0 auto;padding:0 24px}

/* ========== 按钮 ========== */
.btn{display:inline-block;padding:12px 28px;border-radius:8px;font-size:15px;font-weight:600;
     transition:.25s;cursor:pointer;border:none;text-align:center;letter-spacing:.3px;
     line-height:1.4}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:var(--blue-light);transform:translateY(-2px);
                   box-shadow:0 8px 20px rgba(30,64,175,.35)}
.btn-gold{background:linear-gradient(135deg,var(--gold),var(--gold-dark));color:var(--navy)}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(240,185,11,.4)}
.btn-outline{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.4)}
.btn-outline:hover{background:#fff;color:var(--navy);border-color:#fff}
.btn-outline-dark{background:transparent;color:var(--blue);border:2px solid var(--blue)}
.btn-outline-dark:hover{background:var(--blue);color:#fff}

/* =========================================================
   头部
   ========================================================= */
.site-header{background:var(--navy);position:sticky;top:0;z-index:1000;
             box-shadow:0 2px 20px rgba(0,0,0,.15)}
.header-inner{display:flex;align-items:center;gap:24px;height:88px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:22px;color:#fff;
      flex-shrink:0}
.logo-icon{background:linear-gradient(135deg,var(--blue-light),var(--blue));
           color:#fff;padding:8px 12px;border-radius:8px;font-size:16px;font-weight:900}
.logo-img{max-height:52px;width:auto;display:block}
.logo-text{color:#fff;letter-spacing:.5px}

.main-nav{display:flex;gap:2px;margin-left:20px}
.nav-item{position:relative}
.nav-item>a{display:block;padding:12px 18px;border-radius:6px;font-size:15px;
            font-weight:500;color:rgba(255,255,255,.85);transition:.2s}
.nav-item>a:hover,.nav-item>a.active{color:var(--gold);background:rgba(255,255,255,.05)}
.sub-menu{display:none;position:absolute;top:100%;left:0;background:#fff;min-width:180px;
          border-radius:10px;box-shadow:0 12px 32px rgba(10,30,63,.18);padding:8px 0;
          z-index:100;margin-top:6px}
.has-sub:hover .sub-menu{display:block}
.sub-menu a{display:block;padding:10px 20px;font-size:14px;color:var(--text)}
.sub-menu a:hover{background:#f2f6ff;color:var(--blue)}

/* 桌面端右侧区域 */
.header-right{display:flex;flex-direction:column;align-items:flex-end;
              gap:6px;margin-left:auto;flex-shrink:0}
.header-actions{display:flex;gap:10px}
.header-actions .btn{padding:9px 20px;font-size:14px}
.header-actions .btn-outline{color:var(--gold);border-color:var(--gold)}
.header-actions .btn-outline:hover{background:var(--gold);color:var(--navy)}

/* 桌面端顶部 QQ 金色胶囊 */
.header-qq{display:inline-flex;align-items:center;gap:6px;
           padding:5px 14px;border-radius:20px;
           background:linear-gradient(135deg,var(--gold),var(--gold-dark));
           color:var(--navy);font-size:12px;font-weight:700;
           letter-spacing:.3px;
           box-shadow:0 3px 12px rgba(240,185,11,.35);
           transition:.25s;text-decoration:none}
.header-qq:hover{transform:translateY(-2px);
                 box-shadow:0 6px 18px rgba(240,185,11,.5);
                 color:var(--navy)}
.header-qq .qq-icon{font-size:14px;line-height:1}
.header-qq .qq-label{font-size:12px;opacity:.85}
.header-qq .qq-num{font-size:13px;font-weight:800;margin-left:2px}

.mobile-toggle{display:none;font-size:26px;background:none;border:none;cursor:pointer;
               color:#fff;margin-left:auto;padding:6px 10px}

/* =========================================================
   手机端顶部金色联系条（仅手机端显示）
   ========================================================= */
.mobile-contact-bar{display:none;background:linear-gradient(135deg,var(--gold),var(--gold-dark));
                    color:var(--navy);font-size:12px;font-weight:600;
                    box-shadow:0 2px 8px rgba(240,185,11,.25)}
.mobile-contact-bar .mcb-inner{display:flex;align-items:center;justify-content:space-between;
                               padding:8px 14px;gap:8px}
.mobile-contact-bar .mcb-item{display:flex;align-items:center;gap:4px;
                              color:var(--navy);text-decoration:none;
                              font-weight:700;font-size:12px;white-space:nowrap}
.mobile-contact-bar .mcb-icon{font-size:13px;line-height:1}
.mobile-contact-bar .mcb-btn{background:var(--navy);color:#fff;
                             padding:5px 12px;border-radius:14px;
                             font-size:12px;font-weight:700;
                             text-decoration:none;white-space:nowrap;
                             box-shadow:0 2px 8px rgba(10,30,63,.25)}

/* =========================================================
   主视觉 Hero
   ========================================================= */
.hero{position:relative;background:linear-gradient(135deg,#0a1e3f 0%,#122a56 50%,#1e40af 100%);
      color:#fff;padding:90px 0;overflow:hidden}
.hero::before{content:"";position:absolute;top:-50%;right:-10%;width:600px;height:600px;
              background:radial-gradient(circle,rgba(240,185,11,.12) 0%,transparent 70%);
              border-radius:50%;pointer-events:none}
.hero::after{content:"";position:absolute;bottom:-30%;left:-5%;width:500px;height:500px;
             background:radial-gradient(circle,rgba(59,130,246,.15) 0%,transparent 70%);
             border-radius:50%;pointer-events:none}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.2fr 1fr;
            gap:60px;align-items:center}
.hero-text h1{font-size:46px;line-height:1.25;font-weight:800;margin-bottom:20px;
              letter-spacing:-.5px}
.hero-text h1 .gold{color:var(--gold)}
.hero-text p{font-size:17px;color:rgba(255,255,255,.82);margin-bottom:32px;line-height:1.9}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap}
.hero-stats{display:flex;gap:36px;margin-top:48px;padding-top:32px;
            border-top:1px solid rgba(255,255,255,.15);flex-wrap:wrap}
.hero-stat .num{font-size:32px;font-weight:800;color:var(--gold);line-height:1;letter-spacing:-1px}
.hero-stat .label{font-size:13px;color:rgba(255,255,255,.65);margin-top:8px}

.hero-card{background:rgba(255,255,255,.06);backdrop-filter:blur(10px);
           -webkit-backdrop-filter:blur(10px);
           border:1px solid rgba(255,255,255,.12);border-radius:16px;padding:28px}
.hero-card h3{color:#fff;font-size:18px;margin-bottom:20px;display:flex;align-items:center;gap:8px}
.hero-card h3::before{content:"";width:4px;height:18px;background:var(--gold);border-radius:2px}
.rate-row{display:flex;justify-content:space-between;padding:12px 0;
          border-bottom:1px solid rgba(255,255,255,.08);font-size:14px}
.rate-row:last-child{border-bottom:none}
.rate-row .pair{color:rgba(255,255,255,.85);font-weight:600}
.rate-row .price{color:#fff;font-family:ui-monospace,Menlo,Consolas,monospace}
.rate-row .up{color:#4ade80}
.rate-row .down{color:#f87171}

/* =========================================================
   通用 Section
   ========================================================= */
.section{padding:80px 0}
.section-title{text-align:center;margin-bottom:50px}
.section-title .eyebrow{display:inline-block;color:var(--blue);font-size:13px;font-weight:700;
                       letter-spacing:2px;text-transform:uppercase;margin-bottom:12px;
                       padding:6px 16px;background:#eef3ff;border-radius:20px}
.section-title h2{font-size:36px;font-weight:800;color:var(--navy);margin-bottom:14px;
                  letter-spacing:-.5px}
.section-title p{color:var(--text-light);font-size:16px;max-width:640px;margin:0 auto}
.section.dark{background:var(--navy);color:#fff}
.section.dark .section-title h2{color:#fff}
.section.dark .section-title p{color:rgba(255,255,255,.7)}
.section.dark .section-title .eyebrow{background:rgba(240,185,11,.15);color:var(--gold)}

/* =========================================================
   卡片网格
   ========================================================= */
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.card{background:#fff;border-radius:14px;padding:32px 28px;
      box-shadow:0 2px 12px rgba(10,30,63,.06);transition:.3s;
      border:1px solid transparent;position:relative;overflow:hidden;display:block}
.card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;
              background:linear-gradient(90deg,var(--blue),var(--gold));
              transform:scaleX(0);transform-origin:left;transition:.4s}
.card:hover{transform:translateY(-6px);box-shadow:0 12px 32px rgba(10,30,63,.12);
            border-color:#eef3ff}
.card:hover::before{transform:scaleX(1)}
.card-icon{width:56px;height:56px;border-radius:14px;background:linear-gradient(135deg,#eef3ff,#dbe7ff);
           display:flex;align-items:center;justify-content:center;font-size:26px;
           margin-bottom:20px}
.card h3{color:var(--navy);margin-bottom:12px;font-size:18px;font-weight:700}
.card p{color:var(--text-light);font-size:14px;line-height:1.8}

/* =========================================================
   数字统计条
   ========================================================= */
.stats-bar{background:var(--navy);padding:60px 0;position:relative;overflow:hidden}
.stats-bar::before{content:"";position:absolute;inset:0;
                   background:radial-gradient(circle at 20% 50%,rgba(240,185,11,.08),transparent 60%),
                              radial-gradient(circle at 80% 50%,rgba(59,130,246,.1),transparent 60%);
                   pointer-events:none}
.stats-grid{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
            text-align:center}
.stat-item .num{font-size:44px;font-weight:900;color:var(--gold);line-height:1;
                letter-spacing:-1.5px;font-family:'Segoe UI',system-ui,sans-serif}
.stat-item .label{color:rgba(255,255,255,.75);font-size:14px;margin-top:12px;letter-spacing:.5px}
.stat-item .sub{color:rgba(255,255,255,.4);font-size:12px;margin-top:4px}

/* =========================================================
   开户步骤
   ========================================================= */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative}
.step{text-align:center;padding:24px;position:relative}
.step .num{width:64px;height:64px;margin:0 auto 20px;border-radius:50%;
           background:linear-gradient(135deg,var(--blue),var(--blue-light));color:#fff;
           display:flex;align-items:center;justify-content:center;
           font-size:24px;font-weight:800;box-shadow:0 8px 20px rgba(30,64,175,.25)}
.step h4{color:var(--navy);font-size:17px;margin-bottom:10px;font-weight:700}
.step p{color:var(--text-light);font-size:14px}

/* =========================================================
   页面 Hero（子页面用）
   ========================================================= */
.page-hero{background:linear-gradient(135deg,#0a1e3f 0%,#122a56 60%,#1e40af 100%);
           color:#fff;padding:80px 0;text-align:center;position:relative;overflow:hidden}
.page-hero::before{content:"";position:absolute;top:-40%;right:-10%;width:500px;height:500px;
                   background:radial-gradient(circle,rgba(240,185,11,.12),transparent 70%);
                   border-radius:50%;pointer-events:none}
.page-hero .container{position:relative;z-index:2}
.page-hero h1{font-size:42px;font-weight:800;margin-bottom:14px;letter-spacing:-.5px}
.page-hero p{color:rgba(255,255,255,.75);font-size:16px}
.breadcrumb{font-size:13px;color:rgba(255,255,255,.6);margin-bottom:18px}
.breadcrumb a{color:rgba(255,255,255,.75)}
.breadcrumb a:hover{color:var(--gold)}

/* =========================================================
   产品区块（子页面内）
   ========================================================= */
.product-block{background:#fff;border-radius:16px;padding:48px;margin-bottom:32px;
               box-shadow:0 2px 16px rgba(10,30,63,.06)}
.product-block h2{color:var(--navy);margin-bottom:20px;font-size:26px;font-weight:800;
                  padding-left:20px;position:relative}
.product-block h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:5px;
                          background:linear-gradient(180deg,var(--blue),var(--gold));
                          border-radius:3px}
.product-block h3{color:var(--navy);font-size:18px;margin:28px 0 14px;font-weight:700}
.product-block p{color:var(--text-light);line-height:1.9;margin-bottom:16px}
.product-block ul{margin:16px 0;padding-left:0}
.product-block li{position:relative;padding-left:28px;color:var(--text-light);
                  margin-bottom:10px;line-height:1.7}
.product-block li::before{content:"✓";position:absolute;left:0;top:0;
                          color:var(--gold);font-weight:800}

.spec-table{width:100%;border-collapse:collapse;background:#fff;border-radius:12px;
            overflow:hidden;margin:20px 0;font-size:14px}
.spec-table th,.spec-table td{padding:14px 18px;text-align:left;
                              border-bottom:1px solid var(--line)}
.spec-table th{background:var(--navy);color:#fff;font-weight:600;font-size:13px;
               letter-spacing:.5px;text-transform:uppercase}
.spec-table tr:nth-child(even) td{background:#fafbfe}
.spec-table td:first-child{font-weight:600;color:var(--navy)}
.spec-table tr:last-child td{border-bottom:none}

/* =========================================================
   新闻
   ========================================================= */
.news-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px}
.news-card{background:#fff;border-radius:14px;overflow:hidden;
           box-shadow:0 2px 12px rgba(10,30,63,.06);transition:.3s;
           display:flex;flex-direction:column}
.news-card:hover{transform:translateY(-4px);box-shadow:0 12px 32px rgba(10,30,63,.12)}
.news-cover{height:180px;background:linear-gradient(135deg,#eef3ff,#dbe7ff);
            display:flex;align-items:center;justify-content:center;
            font-size:48px;color:var(--blue)}
.news-body{padding:24px;flex:1;display:flex;flex-direction:column}
.news-body h3{font-size:17px;margin-bottom:10px;line-height:1.5;color:var(--navy)}
.news-body h3 a:hover{color:var(--blue)}
.news-meta{font-size:12px;color:var(--text-light);margin-bottom:12px;
           display:flex;gap:12px;align-items:center}
.news-meta .cat{background:#eef3ff;color:var(--blue);padding:3px 10px;
                border-radius:12px;font-weight:600}
.news-excerpt{color:var(--text-light);font-size:14px;flex:1;line-height:1.7}
.news-read{margin-top:14px;color:var(--blue);font-size:13px;font-weight:600}

.news-list{display:grid;gap:20px}
.news-item{background:#fff;border-radius:10px;padding:24px;
           box-shadow:0 2px 10px rgba(10,30,63,.04);transition:.3s}
.news-item:hover{box-shadow:0 6px 24px rgba(30,64,175,.1)}
.news-item h3{font-size:18px;margin-bottom:8px}
.news-item h3 a:hover{color:var(--blue)}
.news-item .meta{font-size:13px;color:var(--text-light);margin-bottom:10px}
.news-item .excerpt{color:var(--text-light);font-size:14px}

/* =========================================================
   文章详情
   ========================================================= */
.article-content{background:#fff;border-radius:16px;padding:48px;
                 box-shadow:0 2px 16px rgba(10,30,63,.06);
                 word-wrap:break-word;overflow-wrap:break-word;word-break:break-word}
.article-content img{max-width:100%;border-radius:10px;margin:20px 0}
.article-content p{margin-bottom:18px;color:#333;line-height:1.95;white-space:pre-wrap}
.article-content h2{color:var(--navy);font-size:22px;margin:32px 0 16px;
                    padding-left:16px;position:relative}
.article-content h2::before{content:"";position:absolute;left:0;top:5px;bottom:5px;
                            width:4px;background:var(--gold);border-radius:2px}
.article-content h3{color:var(--navy);font-size:18px;margin:24px 0 12px}
.article-content ul,.article-content ol{margin:16px 0 16px 24px}
.article-content ul li{list-style:disc;margin-bottom:8px;color:#333}
.article-content ol li{list-style:decimal;margin-bottom:8px;color:#333}
.article-content a{color:var(--blue);text-decoration:underline}
.article-content blockquote{border-left:4px solid var(--gold);background:#fafbfe;
                            padding:16px 20px;margin:20px 0;color:#555;font-style:italic}

/* =========================================================
   CTA 区块
   ========================================================= */
.cta-section{background:linear-gradient(135deg,#122a56,#1e40af);color:#fff;
             padding:70px 0;text-align:center;position:relative;overflow:hidden}
.cta-section::before{content:"";position:absolute;inset:0;
                     background:radial-gradient(circle at 50% 50%,rgba(240,185,11,.15),transparent 60%);
                     pointer-events:none}
.cta-section .container{position:relative;z-index:2}
.cta-section h2{font-size:34px;font-weight:800;margin-bottom:16px}
.cta-section p{color:rgba(255,255,255,.8);font-size:16px;margin-bottom:28px}

/* =========================================================
   分页
   ========================================================= */
.pagination{display:flex;justify-content:center;gap:8px;margin-top:40px;flex-wrap:wrap}
.pagination a,.pagination span{padding:10px 18px;border-radius:8px;background:#fff;
                                box-shadow:0 1px 8px rgba(10,30,63,.08);font-size:14px;
                                transition:.2s}
.pagination a:hover{background:var(--blue);color:#fff}
.pagination .current{background:var(--blue);color:#fff}

/* =========================================================
   底部
   ========================================================= */
.site-footer{background:var(--navy);color:rgba(255,255,255,.7);padding:70px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:48px;padding-bottom:48px}
.footer-col h4{color:#fff;margin-bottom:22px;font-size:16px;font-weight:700;position:relative;
               padding-bottom:12px}
.footer-col h4::after{content:"";position:absolute;left:0;bottom:0;width:32px;height:3px;
                      background:var(--gold);border-radius:2px}
.footer-col ul li{margin-bottom:12px}
.footer-col a{color:rgba(255,255,255,.7)}
.footer-col a:hover{color:var(--gold);padding-left:4px}
.footer-col p{line-height:1.9}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:22px 0;
               text-align:center;font-size:13px;color:rgba(255,255,255,.5)}
.footer-bottom .container{display:flex;justify-content:center;gap:24px;flex-wrap:wrap}
.footer-admin-link{margin-top:20px;padding-top:16px;border-top:1px dashed rgba(255,255,255,.1)}
.footer-admin-link a{color:var(--gold);font-weight:600}

/* =========================================================
   手机端底部固定栏（3 个按钮）
   ========================================================= */
.mobile-bottom-bar{display:none;position:fixed;bottom:0;left:0;right:0;background:#fff;
                   box-shadow:0 -2px 16px rgba(0,0,0,.12);z-index:1001;
                   padding:10px 10px;gap:8px}
.mb-btn{flex:1;text-align:center;padding:13px 4px;border-radius:10px;
        font-weight:700;font-size:14px;white-space:nowrap}
.mb-open{background:linear-gradient(135deg,var(--gold),var(--gold-dark));color:var(--navy)}
.mb-qq{background:linear-gradient(135deg,#12b7f5,#0b8ec2);color:#fff}
.mb-admin{background:var(--navy);color:#fff}

/* =========================================================
   全站悬浮 QQ 按钮
   ========================================================= */
.float-qq{position:fixed;
          right:24px;
          bottom:24px;
          z-index:1002;
          display:inline-flex;align-items:center;gap:8px;
          padding:12px 20px 12px 16px;
          background:linear-gradient(135deg,var(--gold),var(--gold-dark));
          color:var(--navy);
          border-radius:50px;
          font-weight:800;font-size:14px;
          letter-spacing:.3px;
          text-decoration:none;
          box-shadow:0 8px 24px rgba(240,185,11,.45),
                     0 0 0 0 rgba(240,185,11,.5);
          transition:.3s;
          animation:float-in .6s ease-out}
.float-qq:hover{transform:translateY(-4px) scale(1.03);
                box-shadow:0 14px 32px rgba(240,185,11,.6);
                color:var(--navy)}
.float-qq-icon{font-size:20px;line-height:1}
.float-qq-text{white-space:nowrap}
.float-qq-pulse{position:absolute;top:-2px;right:-2px;
                width:14px;height:14px;border-radius:50%;
                background:#e74c3c;
                border:2px solid #fff;
                animation:pulse-ring 1.8s infinite}
@keyframes pulse-ring{
  0%{box-shadow:0 0 0 0 rgba(231,76,60,.6)}
  70%{box-shadow:0 0 0 10px rgba(231,76,60,0)}
  100%{box-shadow:0 0 0 0 rgba(231,76,60,0)}
}
@keyframes float-in{
  from{opacity:0;transform:translateY(20px)}
  to{opacity:1;transform:translateY(0)}
}

/* =========================================================
   404 页面
   ========================================================= */
.error-page{text-align:center;padding:100px 0}
.error-page .code{font-size:120px;font-weight:900;color:var(--navy);
                  line-height:1;letter-spacing:-4px;
                  background:linear-gradient(135deg,var(--blue),var(--gold));
                  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
                  background-clip:text}
.error-page h1{font-size:28px;color:var(--navy);margin:20px 0 12px}
.error-page p{color:var(--text-light);margin-bottom:28px}

/* =========================================================
   响应式
   ========================================================= */
@media(max-width:1100px){
  .hero-text h1{font-size:38px}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .header-inner{gap:16px}
  .nav-item>a{padding:12px 14px;font-size:14px}
}

@media(max-width:991px){
  /* 移动端菜单 */
  .main-nav{display:none;position:absolute;top:88px;left:0;right:0;background:#fff;
            flex-direction:column;padding:16px 20px;box-shadow:0 12px 24px rgba(0,0,0,.12);
            margin:0;border-radius:0 0 12px 12px;z-index:999}
  .main-nav.open{display:flex}
  .main-nav .nav-item>a{color:var(--text);padding:14px 12px}
  .main-nav .nav-item>a:hover,
  .main-nav .nav-item>a.active{background:#eef3ff;color:var(--blue)}
  .sub-menu{position:static;box-shadow:none;display:none;
            padding:0 0 0 16px;margin:0;background:transparent}
  .has-sub.open .sub-menu{display:block}

  /* 隐藏桌面端右侧按钮区 */
  .header-right{display:none}
  .mobile-toggle{display:block;margin-left:0}

  /* 显示手机端顶部联系条 */
  .mobile-contact-bar{display:block}

  /* 显示手机端底部固定栏 */
  .mobile-bottom-bar{display:flex}

  /* Hero 单列 */
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero-text h1{font-size:32px}
  .hero-text p{font-size:15px}
  .hero-stats{flex-wrap:wrap;gap:24px}
  .hero{padding:60px 0}

  /* Section 与卡片 */
  .section{padding:56px 0}
  .section-title h2{font-size:28px}
  .section-title{margin-bottom:36px}
  .page-hero{padding:56px 0}
  .page-hero h1{font-size:30px}
  .card-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .product-block{padding:28px}
  .product-block h2{font-size:22px}
  .article-content{padding:24px}

  .footer-grid{grid-template-columns:1fr;gap:36px}
  .site-main{padding-bottom:90px}   /* 避免底部固定栏遮挡内容 */

  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .stat-item .num{font-size:32px}
  .steps{grid-template-columns:1fr}

  .cta-section{padding:56px 0}
  .cta-section h2{font-size:26px}
  .cta-section p{font-size:15px}

  .error-page .code{font-size:80px}
  .error-page h1{font-size:22px}

  /* 手机端悬浮 QQ 按钮：圆形，抬高避开底部固定栏 */
  .float-qq{right:14px;bottom:86px;
            width:56px;height:56px;padding:0;
            justify-content:center;border-radius:50%;
            box-shadow:0 6px 20px rgba(240,185,11,.5),
                       0 0 0 0 rgba(240,185,11,.5)}
  .float-qq-text{display:none}
  .float-qq-icon{font-size:26px}
  .float-qq-pulse{top:2px;right:2px;width:12px;height:12px}
}

@media(max-width:480px){
  .container{padding:0 16px}
  .hero-text h1{font-size:26px}
  .hero-stats{gap:20px}
  .hero-stat .num{font-size:24px}
  .hero-card{padding:20px}
  .rate-row{font-size:13px}
  .section-title h2{font-size:24px}
  .section-title p{font-size:14px}
  .page-hero h1{font-size:24px}
  .page-hero p{font-size:14px}
  .product-block{padding:20px}
  .product-block h2{font-size:20px;padding-left:16px}
  .spec-table th,.spec-table td{padding:10px 12px;font-size:13px}
  .article-content{padding:18px}
  .article-content h2{font-size:19px}
  .card{padding:24px 20px}
  .stat-item .num{font-size:28px}
  .step .num{width:52px;height:52px;font-size:20px}
  .btn{padding:10px 22px;font-size:14px}
  .footer-bottom .container{flex-direction:column;gap:8px}

  /* 手机端悬浮 QQ 微调 */
  .float-qq{right:10px;bottom:82px;width:52px;height:52px}
  .float-qq-icon{font-size:24px}

  /* 手机端顶部联系条微调 */
  .mobile-contact-bar .mcb-inner{padding:7px 12px;gap:6px}
  .mobile-contact-bar .mcb-item{font-size:11px}
  .mobile-contact-bar .mcb-btn{padding:4px 10px;font-size:11px}

  /* 底部 3 按钮微调 */
  .mb-btn{font-size:13px;padding:12px 2px}
}