/*瑞盛三元 · 站体样式 site-style.css v1.2
   波八 A 治本两条（均已 Edge headless 实测复现）：
   ① .nav-toggle 白字白底修复（移动端导航按钮全站不可见）
   ② .logo order 归零（site.css 移动端 order:1 把 logo 挤到右侧并截断）
   —— 原 v1.0
   用途：sanyuan.top 主站页面（首页 / 关于 / 联系 / 产品 / 资讯 / 服务 / FAQ / 案例 /
         流程 / 会员 / 适配解析 / 知识库 / AI 动态 / 404）统一站体样式。
   色系：主色取自 site.css 的瑞盛绿色阶（--brand-900 → --brand-300），
         末尾「品牌色覆盖段」把全站色系统一到瑞盛绿。
   响应式断点 375 / 768 / 1200 ｜ 纯静态 · 零外链 */
:root{
  --blue:#0a2a5e; --teal:#00b3d6; --ink:#1f2d3d; --gray:#6b7a8c;
  --bg:#f5f8fb; --line:#dce6f0; --footer:#08182f;
}
*{margin:0;padding:0;box-sizing:border-box;font-family:"Microsoft YaHei","PingFang SC","Helvetica Neue",Arial,sans-serif}
body{color:var(--ink);background:#fff;line-height:1.7}
.wrap{width:1200px;max-width:100%;margin:0 auto;padding:0 16px}
a{text-decoration:none;color:inherit}
img{max-width:100%;height:auto;display:block}

/* 顶栏 + 头部 */
.topbar{background:var(--blue);color:#fff;font-size:12px;padding:6px 0}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;gap:8px;flex-wrap:wrap}
.topbar .wrap span{opacity:.92}
.topbar .tel{font-family:Arial;letter-spacing:.3px}
.header{padding:18px 0;border-bottom:1px solid var(--line);background:#fff}
.header .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px}
.logo{display:flex;align-items:center;gap:12px}
.logo img{height:52px;width:auto}
.logo-mark{width:48px;height:48px;border-radius:12px;background:linear-gradient(135deg,var(--blue),var(--teal));color:#fff;display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:700;font-family:"Microsoft YaHei";box-shadow:0 4px 12px rgba(10,42,94,.3)}
.logo-text b{font-size:21px;letter-spacing:1px;color:var(--ink)}
.logo-text i{display:block;font-style:normal;font-size:11px;color:var(--gray);letter-spacing:2px}

/* 导航 */
.nav{background:var(--blue);position:sticky;top:0;z-index:100;box-shadow:0 2px 8px rgba(14,90,167,.25)}
.nav .wrap{display:flex;flex-wrap:wrap}
.nav a{color:#fff;padding:14px 30px;font-size:15px;transition:background .2s;white-space:nowrap}
.nav a:hover,.nav a.on{background:var(--teal)}
.nav-toggle{display:none;background:none;border:0;font-size:26px;color:var(--ink);cursor:pointer;padding:8px 10px;line-height:1}

/* 首屏 Hero */
.banner{background:linear-gradient(120deg,#0b4a8f 0%,#0e5aa7 55%,#0a8f8f 100%);color:#fff;padding:72px 0;overflow:hidden}
.banner .wrap{display:flex;align-items:center;gap:36px;flex-wrap:wrap}
.banner-copy{flex:1 1 460px;min-width:280px}
.banner h1{font-size:38px;letter-spacing:2px;margin-bottom:16px;line-height:1.25}
.banner p{font-size:16px;opacity:.9;max-width:560px;margin-bottom:28px}
.banner .cta{display:flex;gap:14px;flex-wrap:wrap}
.banner .cta a{border:1px solid rgba(255,255,255,.7);padding:10px 28px;border-radius:4px;font-size:14px;transition:.2s}
.banner .cta a.fill{background:#fff;color:var(--blue);border-color:#fff;font-weight:600}
.banner .cta a:hover{background:rgba(255,255,255,.15);color:#fff}
.banner-media{flex:0 0 360px;max-width:100%}
.banner-media img{width:100%;border-radius:12px;box-shadow:0 12px 30px rgba(0,0,0,.25);border:2px solid rgba(255,255,255,.35)}

/* 通用段 */
.sec{padding:56px 0 48px}
.sec-head{text-align:center;margin-bottom:34px}
.sec-head h1{font-size:26px;letter-spacing:2px;font-weight:600;margin:0}
.sec-head h1 em{font-style:normal;color:var(--teal)}
.sec-head h2{font-size:26px;letter-spacing:2px}
.sec-head h2 em{font-style:normal;color:var(--teal)}
.sec-head p{color:var(--gray);font-size:13px;margin-top:8px;letter-spacing:1px}
.sec-sub{text-align:center;color:var(--gray);font-size:14px;max-width:760px;margin:-18px auto 36px}

/* 公司简介 */
.intro{display:grid;grid-template-columns:1fr 380px;gap:32px;align-items:center}
.intro-text p{font-size:14px;line-height:2;color:#3a4a5c;margin-bottom:14px}
.intro-media img{width:100%;border-radius:10px;border:1px solid var(--line);box-shadow:0 8px 20px rgba(14,90,167,.08)}

/* 特性区 4列 → 2列 → 1列 */
.feat{background:var(--bg);padding:52px 0}
.feat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.feat-item{background:#fff;border:1px solid var(--line);border-radius:10px;padding:26px 20px;text-align:center;transition:.2s}
.feat-item:hover{box-shadow:0 8px 20px rgba(14,90,167,.12);transform:translateY(-3px)}
.feat-item .ic{width:54px;height:54px;margin:0 auto 14px;border-radius:50%;background:linear-gradient(135deg,var(--blue),var(--teal));color:#fff;display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:700}
.feat-item b{display:block;color:var(--blue);font-size:16px;margin-bottom:8px}
.feat-item p{color:var(--gray);font-size:13px;line-height:1.8}

/* 产品网格 3列 → 2列 → 1列 */
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{border:1px solid var(--line);border-radius:10px;overflow:hidden;background:#fff;transition:.2s;display:flex;flex-direction:column}
.card:hover{box-shadow:0 8px 22px rgba(14,90,167,.14);transform:translateY(-3px)}
.card .ph{height:180px;overflow:hidden;background:var(--bg)}
.card .ph img{width:100%;height:100%;object-fit:cover;transition:.3s}
.card:hover .ph img{transform:scale(1.05)}
.card .t{padding:16px;text-align:center;flex:1;display:flex;flex-direction:column;justify-content:center}
.card .t b{font-size:16px;display:block;color:var(--ink)}
.card .t i{font-style:normal;color:var(--gray);font-size:12px;display:block;margin-top:6px}
.card .t .more{display:inline-block;margin-top:12px;color:var(--teal);font-size:13px;font-weight:600}

/* 资质亮点 */
.adv{background:var(--bg);padding:52px 0}
.certs{display:flex;gap:18px;justify-content:center;flex-wrap:wrap}
.cert{width:200px;height:240px;border:1px dashed #b8cade;border-radius:8px;background:#fff;
      display:flex;align-items:center;justify-content:center;flex-direction:column;gap:10px;color:#9fb3c8;font-size:13px;text-align:center;padding:10px}
.cert .c-ic{font-size:30px}

/* 关于我们 */
.about{display:grid;grid-template-columns:1.4fr 1fr;gap:30px;align-items:start}
.about-text p{font-size:14px;line-height:2.1;color:#3a4a5c;margin-bottom:14px}
.timeline{list-style:none;border-left:3px solid var(--teal);padding-left:20px;margin-top:8px}
.timeline li{position:relative;padding:0 0 18px 0;font-size:14px;color:#3a4a5c}
.timeline li::before{content:"";position:absolute;left:-27px;top:6px;width:11px;height:11px;border-radius:50%;background:var(--blue);border:2px solid #fff;box-shadow:0 0 0 2px var(--blue)}
.timeline b{color:var(--blue)}
.facts{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:6px}
.fact{background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:18px;text-align:center}
.fact b{font-size:26px;color:var(--blue);font-family:Arial;display:block}
.fact span{display:block;color:var(--gray);font-size:12px;margin-top:6px}
.cert-panel h3{font-size:17px;margin-bottom:14px;color:var(--blue)}
.cert-list{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:16px}
.cert-list .cert{width:auto;height:110px}

/* 联系区 */
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.cbox{border:1px solid var(--line);border-radius:10px;padding:22px;background:#fff}
.cbox h4{color:var(--blue);font-size:15px;margin-bottom:12px}
.cbox p{font-size:13px;line-height:2;color:#3a4a5c}
.cbox .hold{color:#c0392b;font-weight:700}

/* 页脚 */
footer{background:var(--footer);color:#c8d6e5;padding:38px 0 24px;margin-top:0}
footer .fwrap{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:28px}
footer h4{color:#fff;font-size:15px;margin-bottom:14px;letter-spacing:1px}
footer p{font-size:13px;color:#9fb3c8;line-height:2}
footer .fcol b{color:#fff;font-size:16px;display:block;margin-bottom:12px}
footer ul{list-style:none}
footer ul li{font-size:13px;color:#9fb3c8;line-height:2}
footer ul li a:hover{color:#fff}
footer .icp{margin-top:24px;padding-top:14px;border-top:1px solid rgba(255,255,255,.12);font-size:12px;color:#7f95ab;text-align:center}
footer .tech-ops{margin-top:16px;font-size:12px;color:#7f95ab;text-align:center}
footer .tech-ops a{color:#0e5aa7;text-decoration:none}
footer .tech-ops a:hover{text-decoration:underline}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .wrap{width:100%}
}
@media (max-width:768px){
  .nav-toggle{display:block}
  .logo{order:0}
  .nav{display:none}
  .nav.open{display:block}
  .nav .wrap{flex-direction:column}
  .nav a{padding:12px 16px;border-bottom:1px solid rgba(255,255,255,.12)}
  .banner{padding:48px 0}
  .banner h1{font-size:26px}
  .banner p{font-size:14px}
  .banner-media{flex:1 1 100%}
  .intro{grid-template-columns:1fr}
  .intro-media{order:-1}
  .about{grid-template-columns:1fr}
  .feat-grid{grid-template-columns:repeat(2,1fr)}
  .grid3{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr}
  .footer .fwrap{grid-template-columns:1fr;gap:20px}
  .sec-head h1{font-size:22px}
  .sec-head h2{font-size:22px}
  .topbar .wrap{justify-content:center;text-align:center}
  .cert{width:46%;height:200px}
}
@media (max-width:375px){
  .grid3{grid-template-columns:1fr}
  .research-grid{grid-template-columns:1fr}
  .feat-grid{grid-template-columns:1fr}
  .facts{grid-template-columns:1fr 1fr}
  .banner .cta a{padding:9px 20px;font-size:13px}
  .cert{width:100%;height:170px}
}

/* ============ SEO 友好：面包屑 / 资讯 / 会员 / 案例 ============ */
.breadcrumb{background:var(--bg);padding:12px 0;font-size:13px;color:var(--gray)}
.breadcrumb .wrap a{color:var(--blue)}
.breadcrumb .wrap span{margin:0 6px;color:#b8cade}
.breadcrumb .wrap b{color:var(--ink)}

/* 资讯列表 */
.news-list{display:flex;flex-direction:column;gap:18px}
.news-item{display:grid;grid-template-columns:200px 1fr;gap:22px;background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden;transition:.2s}
.news-item:hover{box-shadow:0 8px 22px rgba(14,90,167,.12);transform:translateY(-2px)}
.news-item .thumb{height:150px;overflow:hidden;background:var(--bg)}
.news-item .thumb img{width:100%;height:100%;object-fit:cover}
.news-item .body{padding:18px 20px 18px 0}
.news-item .body .date{color:var(--teal);font-size:12px;font-family:Arial;letter-spacing:1px}
.news-item .body h3{font-size:18px;color:var(--ink);margin:8px 0 10px}
.news-item .body h3 a:hover{color:var(--blue)}
.news-item .body p{font-size:13px;color:#3a4a5c;line-height:1.9}
.news-item .body .tag{display:inline-block;margin-top:10px;background:var(--bg);color:var(--blue);font-size:12px;padding:3px 10px;border-radius:20px}

/* 会员中心 */
.member-hero{background:linear-gradient(120deg,#0b4a8f,#0a8f8f);color:#fff;padding:48px 0}
.member-hero .wrap{display:flex;align-items:center;gap:30px;flex-wrap:wrap}
.member-hero h1{font-size:30px;letter-spacing:2px;margin-bottom:12px}
.member-hero p{opacity:.9;font-size:15px;max-width:540px}
.member-hero .cta a{display:inline-block;margin-top:18px;background:#fff;color:var(--blue);padding:10px 30px;border-radius:4px;font-weight:600}
.benefit-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.benefit{background:#fff;border:1px solid var(--line);border-radius:10px;padding:24px}
.benefit .ic{font-size:26px;margin-bottom:10px}
.benefit b{display:block;color:var(--blue);font-size:16px;margin-bottom:8px}
.benefit p{color:var(--gray);font-size:13px;line-height:1.8}

/* 案例 */
.case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.case{background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden;display:flex;flex-direction:column;transition:.2s}
.case:hover{box-shadow:0 8px 22px rgba(14,90,167,.14);transform:translateY(-3px)}
.case .ph{height:200px;overflow:hidden;background:var(--bg)}
.case .ph img{width:100%;height:100%;object-fit:cover}
.case .body{padding:20px}
.case .body .scene{color:var(--teal);font-size:12px;letter-spacing:1px}
.case .body h3{font-size:18px;color:var(--ink);margin:8px 0 10px}
.case .body p{font-size:13px;color:#3a4a5c;line-height:1.9}
.case .body ul{margin:10px 0 0;padding-left:18px;color:#3a4a5c;font-size:13px;line-height:1.9}
.case .body ul li{margin-bottom:4px}

/* 联系表单 */
.contact-wrap{display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:start}
.form-row{margin-bottom:16px}
.form-row label{display:block;font-size:13px;color:var(--ink);margin-bottom:6px}
.form-row input,.form-row textarea{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:6px;font-size:14px;font-family:inherit}
.form-row textarea{height:120px;resize:vertical}
.form-row .submit{background:var(--blue);color:#fff;border:0;padding:12px 30px;border-radius:6px;font-size:15px;cursor:pointer}
.form-row .submit:hover{background:#0b4a8f}
.note{background:#fff8e6;border:1px solid #ffe08a;color:#8a6d00;font-size:13px;padding:12px 14px;border-radius:6px;margin-bottom:18px;line-height:1.8}

/* AI 应用动态 · 研发探索卡片 */
.research-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.rcard{border:1px solid var(--line);border-radius:10px;overflow:hidden;background:#fff;transition:.2s;display:flex;flex-direction:column}
.rcard:hover{box-shadow:0 8px 22px rgba(14,90,167,.14);transform:translateY(-3px)}
.rcard .rph{height:148px;background:linear-gradient(120deg,#0b4a8f 0%,#0e5aa7 55%,#0a8f8f 100%);display:flex;flex-direction:column;align-items:center;justify-content:center;color:#fff;gap:8px;position:relative}
.rcard .rph .kw{font-size:30px;font-weight:700;letter-spacing:1px;font-family:Arial}
.rcard .rph .sub{font-size:13px;opacity:.92;letter-spacing:1px}
.rcard .rph::after{content:"";position:absolute;right:-20px;bottom:-20px;width:90px;height:90px;border:2px solid rgba(255,255,255,.18);border-radius:50%}
.rcard .rt{padding:18px;flex:1;display:flex;flex-direction:column}
.rcard .rt h3{font-size:18px;color:var(--blue);margin-bottom:6px}
.rcard .rt .cn{font-size:13px;color:var(--gray);margin-bottom:12px}
.rcard .rt p{font-size:13px;color:#3a4a5c;line-height:1.9;margin-bottom:8px}
.rcard .rt .dir{background:var(--bg);border-left:3px solid var(--teal);padding:10px 12px;font-size:13px;color:#3a4a5c;line-height:1.9;margin-bottom:14px}
.rcard .tag{display:inline-block;background:#e6f4f9;color:var(--blue);font-size:12px;padding:4px 12px;border-radius:20px;margin-bottom:12px;align-self:flex-start}
.rcard .rt .more{display:inline-block;background:var(--teal);color:#fff;padding:9px 22px;border-radius:4px;font-size:13px;font-weight:600;margin-top:auto;align-self:flex-start}
.rcard .rt .more:hover{background:#0b8aa3}
.disclaim{background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:22px;font-size:13px;color:#3a4a5c;line-height:1.9;margin-top:30px}
.disclaim b{color:var(--blue)}

/* 小程序入口位（预留太阳码 · 站外引流） */
.mp-entry{background:linear-gradient(120deg,#0b4a8f 0%,#0e5aa7 55%,#0a8f8f 100%);color:#fff;padding:52px 0}
.mp-entry .wrap{display:flex;align-items:center;gap:40px;flex-wrap:wrap}
.mp-entry .mp-copy{flex:1 1 420px;min-width:280px}
.mp-entry h2{font-size:26px;letter-spacing:2px;margin-bottom:14px}
.mp-entry h2 em{font-style:normal;color:#bfe9f5}
.mp-entry p{font-size:15px;opacity:.92;line-height:1.9;max-width:560px}
.mp-entry .mp-points{list-style:none;margin:18px 0 22px;display:flex;flex-wrap:wrap;gap:10px}
.mp-entry .mp-points li{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.3);padding:6px 14px;border-radius:20px;font-size:13px}
.mp-entry .mp-cta{display:inline-block;background:#fff;color:var(--blue);padding:11px 30px;border-radius:4px;font-weight:600;font-size:14px}
.mp-qr{flex:0 0 224px;max-width:100%;background:#fff;border-radius:14px;padding:18px;text-align:center;color:var(--ink)}
.mp-qr .qr-name{font-size:14px;color:var(--blue);font-weight:600;margin-bottom:10px}
.mp-qr .qr-box{width:180px;height:180px;margin:0 auto 12px;border:2px dashed #b8cade;border-radius:10px;display:flex;align-items:center;justify-content:center;color:#9fb3c8;font-size:13px;text-align:center;line-height:1.7}
.mp-qr .qr-cap{font-size:12.5px;color:var(--gray)}

/* 站级声明栏：网站定位 / 不收费 / 不交付 */
.site-note{background:var(--bg);border-top:1px solid var(--line);padding:14px 0;font-size:12.5px;color:var(--gray);text-align:center;line-height:1.8}
.site-note b{color:var(--blue)}

/* 合作流程步骤（企业服务页 · process.html） */
.steps{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:6px}
.step{display:flex;gap:16px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:10px;padding:20px;transition:.2s}
.step:hover{box-shadow:0 8px 20px rgba(14,90,167,.12);transform:translateY(-2px)}
.step .n{flex:none;width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--blue),var(--teal));color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center;font-size:18px}
.step h4{color:var(--blue);font-size:16px;margin-bottom:6px}
.step p{color:var(--gray);font-size:13px;line-height:1.8}
@media (max-width:768px){.steps{grid-template-columns:1fr}}

@media (max-width:768px){
  .research-grid{grid-template-columns:repeat(2,1fr)}
  .news-item{grid-template-columns:1fr}
  .news-item .thumb{height:180px}
  .news-item .body{padding:0 18px 18px}
  .benefit-grid{grid-template-columns:1fr}
  .case-grid{grid-template-columns:1fr}
  .contact-wrap{grid-template-columns:1fr}
  .mp-entry .wrap{flex-direction:column}
  .mp-qr{flex:1 1 100%}
  .mp-qr .qr-box{width:200px;height:200px}
}

/* ================================================================
   品牌色覆盖段 · 瑞盛绿
   主色取自 site.css 的瑞盛绿色阶：
     --brand-900 #062a1f → --footer
     --brand-800 #0a3d2c → --blue（主色）
     --brand-500 #13a87a → --teal（辅色）
   --ink / --gray 保持中性灰不变。
   ================================================================ */
:root{
  --blue:#0a3d2c;   /* = site.css --brand-800 */
  --teal:#13a87a;   /* = site.css --brand-500 */
  --footer:#062a1f; /* = site.css --brand-900 */
  --bg:#f4faf7;     /* 近 site.css --brand-50 */
  --line:#d5e8df;   /* 近 site.css --brand-200 */
  --ink:#1f2d3d;    /* 中性灰，保持不变 */
  --gray:#6b7a8c;   /* 中性灰，保持不变 */
}

/* 站体内嵌的蓝色渐变 / 阴影同步到绿系，保持与变量覆盖一致 */
.banner{background:linear-gradient(120deg,#0a3d2c 0%,#0f7a5a 55%,#13a87a 100%)}
.member-hero{background:linear-gradient(120deg,#0a3d2c,#13a87a)}
.rcard .rph{background:linear-gradient(120deg,#0a3d2c 0%,#0f7a5a 55%,#13a87a 100%)}
.mp-entry{background:linear-gradient(120deg,#0a3d2c 0%,#0f7a5a 55%,#13a87a 100%)}
.logo-mark{box-shadow:0 4px 12px rgba(10,61,44,.3)}
.nav{box-shadow:0 2px 8px rgba(15,122,90,.25)}
.intro-media img{box-shadow:0 8px 20px rgba(15,122,90,.08)}
.feat-item:hover{box-shadow:0 8px 20px rgba(15,122,90,.12)}
.step:hover{box-shadow:0 8px 20px rgba(15,122,90,.12)}
.news-item:hover{box-shadow:0 8px 22px rgba(15,122,90,.12)}
.card:hover,.rcard:hover,.case:hover{box-shadow:0 8px 22px rgba(15,122,90,.14)}
.form-row .submit:hover{background:#0f7a5a}
.rcard .rt .more:hover{background:#0f7a5a}
.rcard .tag{background:#e6f6ef;color:var(--blue)}
.mp-entry h2 em{color:#b7e6d1}

/* 蓝调中性灰同步到绿调中性灰（对齐 site.css 中性色阶） */
footer{color:#d7e6de}
footer p,footer ul li{color:#a9b9b2}
footer .icp,footer .tech-ops{color:#8ca79a}
footer .tech-ops a{color:#13a87a}
.cert{border-color:#cfdad4;color:#a9b9b2}
.breadcrumb .wrap span{color:#cfdad4}
.mp-qr .qr-box{border-color:#cfdad4;color:#a9b9b2}
/* 数据说明页（data.html）血缘对照表样式 · 波四 A1 新增，纯增量不改动既有规则 */
.tbl{width:100%;border-collapse:collapse;margin-top:10px;font-size:13px;background:#fff}
.tbl th,.tbl td{border:1px solid var(--line);padding:10px 12px;text-align:left;line-height:1.8;vertical-align:top}
.tbl th{background:var(--bg);color:var(--blue);font-weight:600}
.tbl td.n{font-family:Arial;white-space:nowrap}
.tbl tr:nth-child(even) td{background:#fafcfd}
@media (max-width:768px){.tbl{display:block;overflow-x:auto}}