/* ===== 中棠会计师事务所 公共样式（所有页面共用） ===== */
:root{
  --navy:#16294a; --navy-2:#1e3a5f; --navy-3:#274a75;
  --gold:#e8a94e; --gold-soft:#f3cf9a;
  --paper:#f7f8fa; --ink:#2b3446; --muted:#6b7688; --line:#e5e9f0;
  --wa:#25d366;
  --radius:14px; --shadow:0 10px 30px rgba(22,41,74,.10);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"Microsoft YaHei","PingFang SC","Segoe UI",Roboto,sans-serif;color:var(--ink);background:#fff;line-height:1.7}
a{color:inherit;text-decoration:none} ul{list-style:none} img{max-width:100%;display:block}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}

/* ===== 顶部导航 ===== */
header{position:sticky;top:0;z-index:99;background:rgba(255,255,255,.97);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px;gap:16px}
.logo{display:flex;align-items:center;gap:12px;flex:none}
.logo-mark{width:40px;height:40px;border-radius:10px;background:var(--navy);color:var(--gold);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:20px}
.logo-text b{font-size:18px;color:var(--navy);letter-spacing:.5px;white-space:nowrap}
.logo-text span{font-size:10.5px;color:var(--muted);letter-spacing:1.5px;display:block;margin-top:-2px;white-space:nowrap}
.menu{display:flex;gap:28px}
.menu a{font-size:15px;color:var(--ink);padding:6px 2px;border-bottom:2px solid transparent;transition:.2s;white-space:nowrap}
.menu a:hover,.menu a.active{color:var(--navy);border-color:var(--gold)}
.nav-right{display:flex;align-items:center;gap:12px}
.lang-sw{display:flex;background:#eef2f8;border-radius:999px;padding:3px;font-size:13px}
.lang-sw button{border:none;background:transparent;padding:5px 12px;border-radius:999px;cursor:pointer;color:var(--muted);font-size:13px;transition:.2s}
.lang-sw button.on{background:var(--navy);color:#fff;font-weight:700}
.nav-tel{display:flex;align-items:center;gap:8px;background:var(--navy);color:#fff;padding:9px 16px;border-radius:999px;font-size:13.5px;transition:.2s;white-space:nowrap}
.nav-tel:hover{background:var(--navy-3)}
.nav-tel b{font-size:15px}

/* ===== 按钮 ===== */
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 28px;border-radius:999px;font-size:15px;transition:.2s;cursor:pointer;border:none;font-family:inherit}
.btn-gold{background:var(--gold);color:#3a2a08;font-weight:700}
.btn-gold:hover{background:#f0b862;transform:translateY(-2px)}
.btn-navy{background:var(--navy);color:#fff;font-weight:700}
.btn-navy:hover{background:var(--navy-3);transform:translateY(-2px)}
.btn-ghost{border:1px solid rgba(255,255,255,.35);color:#fff;background:transparent}
.btn-ghost:hover{border-color:var(--gold);color:var(--gold-soft)}
.btn-wa{background:var(--wa);color:#fff;font-weight:700}
.btn-wa:hover{filter:brightness(1.08);transform:translateY(-2px)}
.btn-outline{border:1px solid var(--navy);color:var(--navy);background:transparent}
.btn-outline:hover{background:var(--navy);color:#fff}

/* ===== 页面内部页（子页面顶部条幅） ===== */
.page-hero{background:linear-gradient(135deg,var(--navy) 0%,var(--navy-2) 60%,var(--navy-3) 100%);color:#fff;position:relative;overflow:hidden}
.page-hero::before{content:"";position:absolute;right:-100px;top:-140px;width:400px;height:400px;border-radius:50%;background:radial-gradient(circle,rgba(232,169,78,.18),transparent 70%)}
.page-hero::after{content:"";position:absolute;left:-80px;bottom:-160px;width:300px;height:300px;border-radius:50%;background:radial-gradient(circle,rgba(232,169,78,.10),transparent 70%)}
.page-hero .inner{position:relative;z-index:1;padding:58px 0 62px;max-width:820px}
.page-hero .en{font-size:12px;letter-spacing:4px;color:var(--gold);text-transform:uppercase;font-weight:700;margin-bottom:10px}
.page-hero h1{font-size:34px;line-height:1.4;margin-bottom:12px}
.page-hero h1 em{font-style:normal;color:var(--gold)}
.page-hero p{color:#c6d2e4;font-size:15.5px;max-width:640px}
.breadcrumb{font-size:12.5px;color:#8fa0ba;margin-top:18px;display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.breadcrumb a:hover{color:var(--gold-soft)}
.breadcrumb .sep{opacity:.6}

/* ===== 节头 / 区块 ===== */
section{padding:74px 0}
.sec-head{text-align:center;margin-bottom:46px}
.sec-head.left{text-align:left}
.sec-head .en{font-size:12px;letter-spacing:4px;color:var(--gold);text-transform:uppercase;font-weight:700}
.sec-head h2{font-size:30px;color:var(--navy);margin:8px 0 10px}
.sec-head p{color:var(--muted);font-size:15px}
.alt{background:var(--paper)}
.lead{font-size:16px;color:var(--ink);max-width:860px;margin:0 auto 16px;text-align:center;line-height:1.9}
.lead.muted{color:var(--muted)}

/* ===== 业务卡片 ===== */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.svc-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 24px;transition:.25s;position:relative;overflow:hidden;display:block;height:100%}
.svc-card::before{content:"";position:absolute;top:0;left:0;width:100%;height:3px;background:linear-gradient(90deg,var(--navy),var(--gold));transform:scaleX(0);transform-origin:left;transition:.3s}
.svc-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent}
.svc-card:hover::before{transform:scaleX(1)}
.svc-icon{width:50px;height:50px;border-radius:12px;background:#eef2f8;display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:16px}
.svc-card h3{font-size:18px;color:var(--navy);margin-bottom:9px}
.svc-card p{font-size:13.5px;color:var(--muted);min-height:64px}
.svc-tag{display:inline-block;margin-top:12px;font-size:12px;color:var(--gold);background:#fdf6ec;padding:4px 12px;border-radius:999px}
.svc-more{display:block;margin-top:14px;font-size:13.5px;color:var(--gold);font-weight:700;transition:.2s}
.svc-card:hover .svc-more{color:var(--navy)}

/* ===== 文章卡片 ===== */
.blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.post-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;transition:.25s;position:relative;overflow:hidden;display:flex;flex-direction:column;height:100%}
.post-card::before{content:"";position:absolute;top:0;left:0;width:100%;height:4px;background:linear-gradient(90deg,var(--navy),var(--gold));transform:scaleX(0);transform-origin:left;transition:.3s}
.post-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent}
.post-card:hover::before{transform:scaleX(1)}
.post-tag{display:inline-block;font-size:11.5px;color:var(--gold);background:#fdf6ec;padding:3px 10px;border-radius:999px;margin-bottom:12px;align-self:flex-start}
.post-card h3{font-size:17.5px;color:var(--navy);margin-bottom:10px;line-height:1.45}
.post-date{display:block;font-size:12px;color:var(--muted);margin-bottom:10px}
.post-excerpt{font-size:13.5px;color:var(--muted);flex:1;margin-bottom:14px;line-height:1.7}
.post-more{font-size:14px;color:var(--gold);font-weight:700;transition:.2s}
.post-card:hover .post-more{color:var(--navy)}

/* ===== 文章正文 ===== */
.article-body{font-size:15px;color:var(--ink);line-height:1.9}
.article-body p{margin-bottom:16px}
.article-body h4{font-size:16.5px;color:var(--navy);margin:24px 0 10px}
.article-body ul{margin:0 0 16px 22px;list-style:disc}
.article-body li{font-size:14.5px;margin-bottom:7px}
.article-body strong{color:var(--navy)}

/* ===== 流程 ===== */
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.flow-step{text-align:center;padding:0 14px;position:relative}
.flow-step .num{width:56px;height:56px;border-radius:50%;background:#fff;border:2px solid var(--gold);color:var(--navy);font-size:20px;font-weight:700;display:flex;align-items:center;justify-content:center;margin:0 auto 16px;position:relative;z-index:1}
.flow-step:not(:last-child)::after{content:"";position:absolute;top:28px;left:calc(50% + 34px);width:calc(100% - 68px);border-top:2px dashed #cdd6e4}
.flow-step h4{font-size:16px;color:var(--navy);margin-bottom:8px}
.flow-step p{font-size:13px;color:var(--muted)}

/* ===== 双栏 / 面板 ===== */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:start}
.panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px 30px}
.panel h3{font-size:20px;color:var(--navy);margin-bottom:18px;display:flex;align-items:center;gap:10px}
.panel h3 .dot{width:9px;height:9px;border-radius:50%;background:var(--gold);flex:none}
.check-list li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;margin-bottom:12px;color:var(--ink)}
.check-list li::before{content:"✓";width:20px;height:20px;border-radius:50%;background:#e9f2e6;color:#4e8a3f;font-size:12px;display:inline-flex;align-items:center;justify-content:center;flex:none;margin-top:3px}
.check-list b{color:var(--navy);font-weight:600}

/* ===== 数值带 ===== */
.stat-band{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 16px;text-align:center}
.stat b{font-size:30px;color:var(--navy);display:block}
.stat b em{font-style:normal;color:var(--gold)}
.stat span{font-size:13px;color:var(--muted)}

/* ===== FAQ ===== */
.faq-item{border:1px solid var(--line);border-radius:var(--radius);background:#fff;margin-bottom:14px;overflow:hidden}
.faq-q{width:100%;text-align:left;background:none;border:none;padding:18px 22px;font-size:15.5px;font-weight:700;color:var(--navy);cursor:pointer;font-family:inherit;display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq-q .arr{color:var(--gold);font-size:18px;transition:.25s;flex:none}
.faq-item.open .arr{transform:rotate(180deg)}
.faq-a{display:none;padding:0 22px 20px;font-size:14.5px;color:var(--muted);line-height:1.85}
.faq-item.open .faq-a{display:block}

/* ===== 联系卡片 ===== */
.contact-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:28px}
.ccard{border:1px solid var(--line);border-radius:14px;padding:22px 16px;transition:.2s;cursor:pointer;display:block;text-align:center}
.ccard:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:transparent}
.ccard .ic{width:46px;height:46px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:21px;margin:0 auto 12px}
.cc-tel .ic{background:#eef4ff} .cc-wx .ic{background:#e9f7ee} .cc-wa .ic{background:#e6f9ee}
.ccard b{font-size:16.5px;color:var(--navy);display:block;margin-bottom:4px}
.ccard span{font-size:13px;color:var(--muted)}
.ccard .val{font-size:15px;color:var(--ink);font-weight:700;margin-top:6px;display:block}
.ccard .landline{font-size:12.5px;color:var(--muted);margin-top:2px;display:block}
.ccard .hint{font-size:11.5px;color:var(--gold);margin-top:4px;display:block}

/* ===== CTA ===== */
.cta{background:var(--paper)}
.cta-box{background:#fff;border:1px solid var(--line);border-radius:20px;padding:48px;text-align:center;box-shadow:var(--shadow)}
.cta-box h2{font-size:26px;color:var(--navy);margin-bottom:10px}
.cta-box .sub{color:var(--muted);margin-bottom:28px}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-bottom:26px}

/* ===== 表单 ===== */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-item{display:flex;flex-direction:column;gap:6px}
.form-item.full{grid-column:1/-1}
.form-item label{font-size:13.5px;color:var(--navy);font-weight:700}
.form-item input,.form-item textarea,.form-item select{border:1px solid var(--line);border-radius:10px;padding:12px 14px;font-size:14.5px;font-family:inherit;color:var(--ink);background:#fbfcfe;transition:.2s;outline:none}
.form-item input:focus,.form-item textarea:focus,.form-item select:focus{border-color:var(--gold);background:#fff;box-shadow:0 0 0 3px rgba(232,169,78,.15)}
.form-item textarea{resize:vertical;min-height:120px}
.form-note{font-size:12.5px;color:var(--muted);text-align:center;margin-top:14px}
.form-ok{display:none;background:#e9f2e6;color:#3f7a33;border:1px solid #cfe3c8;border-radius:10px;padding:14px 18px;font-size:14px;text-align:center;margin-top:14px}
.form-ok.show{display:block}

/* ===== 页脚 ===== */
footer{background:var(--navy);color:#a9b8cf;padding:52px 0 0;font-size:13.5px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding-bottom:36px}
.foot-grid h4{color:#fff;font-size:16px;margin-bottom:14px}
.foot-grid li{margin-bottom:10px}
.foot-grid a:hover{color:var(--gold-soft)}
.foot-bar{border-top:1px solid rgba(255,255,255,.12);padding:18px 0;text-align:center;font-size:12.5px;color:#7d8ca5}

/* ===== 响应式 ===== */
@media (max-width:1024px){
  .menu{gap:18px}
  .nav-tel b{display:none}
}
@media (max-width:960px){
  .svc-grid{grid-template-columns:1fr 1fr}
  .blog-grid{grid-template-columns:1fr 1fr}
  .flow-grid{grid-template-columns:1fr 1fr;gap:30px}
  .flow-step:not(:last-child)::after{display:none}
  .two-col{grid-template-columns:1fr}
  .stat-band{grid-template-columns:1fr 1fr}
  .foot-grid{grid-template-columns:1fr}
  .contact-cards{grid-template-columns:1fr}
  .menu{display:none}
}
@media (max-width:560px){
  .svc-grid{grid-template-columns:1fr}
  .blog-grid{grid-template-columns:1fr}
  .stat-band{grid-template-columns:1fr 1fr}
  .cta-box{padding:32px 20px}
  .nav-tel{display:none}
  .form-grid{grid-template-columns:1fr}
  .page-hero h1{font-size:27px}
  .topbar{display:none}
  .product-hero-img{min-height:200px}
  .pricing-row{grid-template-columns:1fr!important;gap:4px!important}
  .pricing-row .p-tier{border-right:none;border-bottom:1px solid var(--line)}
}

/* ===== 顶部联系方式条 ===== */
.topbar{background:var(--navy);color:#a9b8cf;font-size:12.5px;padding:7px 0}
.topbar-inner{display:flex;justify-content:flex-end;align-items:center;gap:22px}
.topbar a{color:#a9b8cf;transition:.2s;display:inline-flex;align-items:center;gap:4px}
.topbar a:hover{color:var(--gold-soft)}
.topbar .sep{opacity:.3}
@media(max-width:960px){.topbar-inner{gap:14px;justify-content:center}}

/* ===== 产品页 Hero（含图片位） ===== */
.product-hero{background:linear-gradient(135deg,var(--navy) 0%,var(--navy-2) 60%,var(--navy-3) 100%);color:#fff;position:relative;overflow:hidden}
.product-hero::before{content:"";position:absolute;right:-100px;top:-140px;width:400px;height:400px;border-radius:50%;background:radial-gradient(circle,rgba(232,169,78,.18),transparent 70%)}
.product-hero .inner{position:relative;z-index:1;padding:48px 0 56px;display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.product-hero .text .en{font-size:12px;letter-spacing:4px;color:var(--gold);text-transform:uppercase;font-weight:700;margin-bottom:10px}
.product-hero h1{font-size:33px;line-height:1.4;margin-bottom:14px}
.product-hero .text p{color:#c6d2e4;font-size:15px;max-width:520px;margin-bottom:18px}
.product-hero .breadcrumb{font-size:12.5px;color:#8fa0ba;display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.product-hero .breadcrumb a:hover{color:var(--gold-soft)}
.product-hero .breadcrumb .sep{opacity:.6}
.product-hero-img{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.15);border-radius:16px;min-height:340px;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}
.product-hero-img .placeholder-icon{font-size:72px;opacity:.25}
.product-hero-img .placeholder-text{position:absolute;bottom:16px;font-size:12px;color:rgba(255,255,255,.4);letter-spacing:1px}
.product-hero-img img{width:100%;height:100%;object-fit:cover;border-radius:16px}
@media(max-width:960px){
  .product-hero .inner{grid-template-columns:1fr;gap:24px}
  .product-hero-img{min-height:260px}
  .product-hero h1{font-size:27px}
}

/* ===== 适用对象 / 报告用途 网格 ===== */
.audience-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.audience-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;transition:.25s}
.audience-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.audience-card .ic{width:46px;height:46px;border-radius:12px;background:#eef2f8;display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:14px}
.audience-card b{font-size:16px;color:var(--navy);display:block;margin-bottom:6px}
.audience-card p{font-size:13.5px;color:var(--muted);line-height:1.75}
@media(max-width:960px){.audience-grid{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.audience-grid{grid-template-columns:1fr}}

/* ===== 收费标准 ===== */
.pricing-wrap{max-width:860px;margin:0 auto}
.pricing-row{display:grid;grid-template-columns:200px 160px 1fr;gap:0;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin-bottom:12px;transition:.2s}
.pricing-row:hover{box-shadow:var(--shadow)}
.pricing-row>div{padding:18px 20px;display:flex;align-items:center}
.pricing-row .p-tier{background:#f7f8fa;font-weight:700;color:var(--navy);font-size:15px;border-right:1px solid var(--line)}
.pricing-row .p-price{color:var(--gold);font-weight:700;font-size:17px;border-right:1px solid var(--line)}
.pricing-row .p-desc{color:var(--muted);font-size:13.5px}
.pricing-note{text-align:center;font-size:13px;color:var(--muted);margin-top:16px}
@media(max-width:760px){.pricing-row{grid-template-columns:1fr;gap:0}.pricing-row>div{border-bottom:1px solid var(--line)}.pricing-row .p-tier{border-right:none}}

/* ===== 需提供资料 ===== */
.materials-wrap{max-width:860px;margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:12px 28px}
.materials-wrap .mat-item{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--ink);margin-bottom:4px}
.materials-wrap .mat-item::before{content:"📄";flex:none;font-size:16px;margin-top:1px}
.materials-wrap .mat-item b{color:var(--navy);font-weight:600}
@media(max-width:560px){.materials-wrap{grid-template-columns:1fr}}