/* ============================================
   上海注册公司.com 全站共享样式
   ============================================ */
:root{
  --bg:#f7f8fa;
  --card:#fff;
  --ink:#1a1a1a;
  --sub:#666;
  --line:#e6e8eb;
  --brand:#c8161d;
  --brand2:#a01018;
  --brand-light:#fdecec;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--ink);line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:inherit}
img{max-width:100%;height:auto;display:block}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
.wrap-narrow{max-width:820px;margin:0 auto;padding:0 20px}

/* ---------- 顶部导航 ---------- */
header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{font-weight:800;font-size:19px;color:var(--brand);letter-spacing:-.5px;flex-shrink:0}
.logo small{display:block;font-size:11px;color:var(--sub);font-weight:400;letter-spacing:0;line-height:1.4}
.navlinks{display:flex;gap:22px;font-size:14.5px;align-items:center}
.navlinks a{color:#444;transition:.2s;white-space:nowrap}
.navlinks a:hover{color:var(--brand)}
.navtel{background:var(--brand);color:#fff;padding:9px 18px;border-radius:6px;font-weight:700;font-size:14.5px;white-space:nowrap}
.navtel:hover{background:var(--brand2)}
@media(max-width:860px){.navlinks{display:none}}

/* ---------- 手机端悬浮拨号条 ---------- */
.callbar{
  position:fixed;bottom:0;left:0;right:0;background:var(--brand);color:#fff;
  text-align:center;padding:13px;font-weight:700;font-size:16px;z-index:99;
  box-shadow:0 -2px 12px rgba(0,0,0,.15);
}
.callbar a{display:block;color:#fff}
@media(min-width:861px){.callbar{display:none}}

/* ---------- 内页头条 ---------- */
.pagehead{background:linear-gradient(135deg,#1a1a1a,#2d2d2d);color:#fff;padding:46px 0 42px}
.pagehead h1{font-size:29px;line-height:1.4;font-weight:800;letter-spacing:-.8px;margin-bottom:12px}
.pagehead p{font-size:15.5px;color:#c0c0c0;max-width:680px}
.breadcrumb{font-size:13px;color:#888;margin-bottom:16px}
.breadcrumb a{color:#aaa}
.breadcrumb a:hover{color:#fff}
@media(max-width:768px){.pagehead h1{font-size:23px}}

/* ---------- 首页 Hero ---------- */
.hero{background:linear-gradient(135deg,#1a1a1a,#2d2d2d);color:#fff;padding:64px 0 56px}
.hero h1{font-size:36px;line-height:1.35;font-weight:800;letter-spacing:-1px;margin-bottom:16px}
.hero h1 em{color:#ff6b6b;font-style:normal}
.hero p{font-size:16.5px;color:#c8c8c8;max-width:620px;margin-bottom:28px}
.herobtns{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:32px}
.trust{display:flex;gap:28px;flex-wrap:wrap;font-size:13.5px;color:#999;border-top:1px solid #333;padding-top:24px}
.trust b{color:#ff9c9c;font-size:15px;display:block}
@media(max-width:768px){.hero h1{font-size:26px}.hero p{font-size:15.5px}}

/* ---------- 按钮 ---------- */
.btn{display:inline-block;padding:13px 28px;border-radius:8px;font-weight:700;font-size:16px;transition:.2s;border:0;cursor:pointer;font-family:inherit;text-align:center}
.btn-main{background:var(--brand);color:#fff}
.btn-main:hover{background:var(--brand2);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:#fff;border:1.5px solid #555}
.btn-ghost:hover{border-color:#fff}

/* ---------- 通用区块 ---------- */
section{padding:56px 0}
.sec-title{font-size:26px;font-weight:800;text-align:center;margin-bottom:10px;letter-spacing:-.5px}
.sec-sub{text-align:center;color:var(--sub);font-size:15px;margin-bottom:40px}
@media(max-width:768px){section{padding:40px 0}.sec-title{font-size:21px}}

/* ---------- 卡片网格 ---------- */
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
@media(max-width:860px){.grid3,.grid2{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:26px;transition:.25s}
.card:hover{box-shadow:0 6px 24px rgba(0,0,0,.06);transform:translateY(-2px)}
.card h3{font-size:17.5px;margin-bottom:10px;font-weight:700}
.card p{color:var(--sub);font-size:14.5px}
.card p+p{margin-top:10px}
.card .num{font-size:13px;font-weight:800;color:var(--brand);margin-bottom:8px;letter-spacing:1px}

/* ---------- 正文排版 ---------- */
.article{background:#fff;border-radius:12px;padding:44px;border:1px solid var(--line)}
@media(max-width:768px){.article{padding:26px 20px}}
.article h2{font-size:21px;font-weight:800;margin:34px 0 14px;padding-left:13px;border-left:4px solid var(--brand);line-height:1.4}
.article h2:first-child{margin-top:0}
.article h3{font-size:17px;font-weight:700;margin:24px 0 10px}
.article p{font-size:15.5px;color:#333;margin-bottom:14px;line-height:1.9}
.article ul,.article ol{margin:0 0 16px 22px}
.article li{font-size:15.5px;color:#333;margin-bottom:9px;line-height:1.85}
.article strong{color:var(--ink)}
.article blockquote{background:var(--brand-light);border-left:4px solid var(--brand);padding:16px 20px;margin:18px 0;border-radius:0 8px 8px 0}
.article blockquote p{margin-bottom:0;color:#8a1519;font-size:15px}
.article table{width:100%;border-collapse:collapse;margin:20px 0;font-size:14.5px}
.article th,.article td{border:1px solid var(--line);padding:11px 14px;text-align:left}
.article th{background:#fafafa;font-weight:700}
@media(max-width:768px){.article table{font-size:13.5px}.article th,.article td{padding:9px 10px}}

/* ---------- 流程步骤 ---------- */
.steps{display:flex;flex-direction:column}
.step{display:flex;gap:22px;padding:22px 0;border-bottom:1px dashed var(--line)}
.step:last-child{border-bottom:0}
.step-n{flex-shrink:0;width:44px;height:44px;border-radius:50%;background:var(--brand-light);color:var(--brand);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:17px}
.step h4{font-size:16.5px;margin-bottom:5px}
.step p{color:var(--sub);font-size:14.5px}

/* ---------- 内链列表 ---------- */
.linklist{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
@media(max-width:768px){.linklist{grid-template-columns:1fr}}
.linklist a{background:#fff;border:1px solid var(--line);border-radius:10px;padding:18px 22px;display:flex;justify-content:space-between;align-items:center;font-size:15.5px;font-weight:600;transition:.2s}
.linklist a:hover{border-color:var(--brand);color:var(--brand);padding-left:26px}
.linklist a span{color:#bbb;font-weight:400}

/* ---------- FAQ 折叠 ---------- */
.faq-item{background:#fff;border:1px solid var(--line);border-radius:10px;margin-bottom:12px;overflow:hidden}
.faq-q{padding:18px 22px;font-weight:700;font-size:15.5px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:14px}
.faq-q:after{content:"+";color:var(--brand);font-size:22px;font-weight:400;flex-shrink:0;line-height:1}
.faq-item.open .faq-q:after{content:"−"}
.faq-a{display:none;padding:0 22px 20px;color:var(--sub);font-size:14.5px;line-height:1.85}
.faq-item.open .faq-a{display:block}

/* ---------- 表单 ---------- */
.formbox{background:#fff;border:2px solid var(--brand);border-radius:14px;padding:32px;max-width:520px;margin:0 auto}
.formbox h3{text-align:center;font-size:20px;margin-bottom:8px}
.formbox .tip{text-align:center;color:var(--sub);font-size:13.5px;margin-bottom:22px}
.formbox label{display:block;font-size:13.5px;font-weight:700;margin-bottom:6px;color:#444}
.formbox input,.formbox textarea{width:100%;padding:13px 15px;border:1px solid var(--line);border-radius:8px;font-size:15px;margin-bottom:14px;font-family:inherit;background:#fcfcfd}
.formbox input:focus,.formbox textarea:focus{outline:2px solid var(--brand);outline-offset:-1px;border-color:var(--brand);background:#fff}
.formbox button{width:100%;padding:14px;background:var(--brand);color:#fff;border:0;border-radius:8px;font-size:16.5px;font-weight:700;cursor:pointer;font-family:inherit}
.formbox button:hover{background:var(--brand2)}

/* ---------- 行动号召横条 ---------- */
.cta-band{background:linear-gradient(135deg,#8a1519,#c8161d);color:#fff;border-radius:12px;padding:30px 34px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;margin:34px 0}
.cta-band h3{font-size:19px;margin-bottom:6px}
.cta-band p{font-size:14.5px;color:#ffd9da;margin:0}
.cta-band .btn{background:#fff;color:var(--brand);flex-shrink:0}
.cta-band .btn:hover{background:#ffe8e9}

/* ---------- 联系区 ---------- */
.contact{background:#1a1a1a;color:#fff;text-align:center;padding:52px 20px}
.contact h2{font-size:24px;margin-bottom:12px}
.contact .big{font-size:38px;font-weight:800;color:#ff6b6b;letter-spacing:1px;margin:18px 0}
.contact p{color:#999;font-size:14.5px}
@media(max-width:768px){.contact .big{font-size:30px}}

/* ---------- 页脚 ---------- */
footer{background:#111;color:#777;padding:36px 20px;font-size:13.5px;text-align:center;line-height:2}
footer a{color:#999}
footer a:hover{color:#fff}
footer .disc{color:#555;font-size:12.5px;margin-top:14px;max-width:760px;margin-left:auto;margin-right:auto;line-height:1.9;text-align:left}
footer .nav-f{display:flex;gap:18px;justify-content:center;flex-wrap:wrap;margin:14px 0}
footer .nav-f a{font-size:13px}

/* 手机端给悬浮条留位置 */
@media(max-width:860px){body{padding-bottom:50px}}