:root{
  --primary:#0f4c81;
  --secondary:#1e7bbf;
  --accent:#ff9f1c;
  --dark:#0d1b2a;
  --text:#334155;
  --muted:#64748b;
  --line:#e2e8f0;
  --bg:#f8fafc;
  --white:#fff;
  --radius:18px;
  --shadow:0 12px 40px rgba(15,76,129,.08);
  --container:min(1200px,calc(100% - 32px));
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font:16px/1.7 "Segoe UI",Arial,"Microsoft YaHei",sans-serif;
  color:var(--text);
  background:var(--white);
}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul{margin:0;padding:0;list-style:none}
input,textarea,select,button{font:inherit}
.container{width:var(--container);margin:0 auto}
.section{padding:72px 0}
.section-head{display:flex;justify-content:space-between;gap:20px;align-items:end;margin-bottom:32px}
.eyebrow{display:inline-block;padding:6px 12px;border-radius:999px;background:#e8f3fb;color:var(--primary);font-size:13px;font-weight:700;letter-spacing:.04em;text-transform:uppercase}
.title{margin:12px 0 10px;font-size:clamp(30px,4vw,36px);line-height:1.15;}
.subtitle{margin:0;color:var(--muted);max-width:720px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 22px;border:1px solid transparent;border-radius:999px;
  font-weight:700;transition:.25s;background:var(--primary);color:var(--white)
}
.btn:hover{transform:translateY(-2px);background:#0b3d69;color:var(--white)}
.btn-outline{background:var(--bg);color:var(--primary);border-color:var(--primary)}
.btn-accent{background:var(--accent);color:#111827}
.badge{display:inline-block;padding:5px 10px;border-radius:999px;background:#eef6ff;color:var(--secondary);font-size:12px;font-weight:700}
.topbar{background:#355679;color:#cbd5e1;font-size:14px}
.topbar .container{display:flex;justify-content:space-between;gap:16px;padding:10px 0}
.site-header{
  position:sticky;top:0;z-index:30;background:rgba(255,255,255,.96);
  backdrop-filter:blur(14px);border-bottom:1px solid rgba(226,232,240,.9);box-shadow:0 8px 28px rgba(15,23,42,.04)
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:28px;min-height:86px}
.logo{display:flex;align-items:center;gap:0;font-size:24px;font-weight:800;color:var(--dark);}
.logo span{display:none}
.logo img{object-fit:contain;width:280px;height:50px;}
.nav{display:flex;align-items:center;gap:28px}
.nav a{color:#0f172a;font-weight:600;line-height:1}
.nav a:hover,.nav a.active{color:var(--primary)}
.nav-item{position:relative}
.nav-item.dropdown::after{content:"";position:absolute;left:0;right:0;top:100%;height:14px}
.dropdown-toggle{display:inline-flex;align-items:center;gap:6px}
.dropdown-toggle:after{content:"▾";font-size:12px;color:#64748b}
.dropdown-menu{position:absolute;top:calc(100% + 14px);left:0;min-width:240px;padding:12px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:0 18px 42px rgba(15,23,42,.1);display:none;z-index:40}
.dropdown-menu a{display:block;padding:11px 14px;border-radius:12px}
.dropdown-menu a:hover,.dropdown-menu a.active{background:#f8fbff;color:var(--primary)}
.nav-item.dropdown:hover .dropdown-menu,.nav-item.dropdown:focus-within .dropdown-menu{display:block}
.nav-cta{display:flex;gap:12px;align-items:center}
.menu-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;
  background:var(--white);align-items:center;justify-content:center
}
.menu-toggle span,.menu-toggle span:before,.menu-toggle span:after{
  width:18px;height:2px;background:#0f172a;display:block;content:"";position:relative;transition:.25s
}
.menu-toggle span:before{position:absolute;top:-6px}
.menu-toggle span:after{position:absolute;top:6px}
.hero{position:relative;overflow:hidden;color:var(--white);background:#0b2742}
.hero-slider{position:relative;min-height:660px}
.hero-slide{position:absolute;inset:0;opacity:0;visibility:hidden;transition:opacity .7s ease,visibility .7s ease}
.hero-slide.is-active{opacity:1;visibility:visible;z-index:1}
.hero-slide-bg,.hero-slide-bg img{position:absolute;inset:0;width:100%;height:100%}
.hero-slide-bg img{object-fit:cover}
.hero-slide:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(8,20,35,.82) 0%,rgba(9,30,52,.68) 45%,rgba(15,76,129,.38) 100%);z-index:0}
.hero-slide:after{content:"";position:absolute;inset:0;background:url("../images/hero-pattern.svg") center/cover no-repeat;opacity:.16;z-index:0}
.hero-layout{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,760px);gap:40px;align-items:end;min-height:660px;padding:120px 0 72px}
.hero-copy{
  max-width:720px;padding:28px 30px;border-radius:28px;
  background:linear-gradient(180deg,rgba(8,20,35,.18),rgba(8,20,35,.28));
  border:1px solid rgba(255,255,255,.08);backdrop-filter:blur(4px)
}
.hero h1{margin:18px 0 16px;font-size:clamp(38px,5vw,64px);line-height:1.05}
.hero p{margin:0 0 22px;color:#e2e8f0;font-size:18px;max-width:640px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:22px}
.hero-stats li{padding:14px 16px;border-radius:16px;background:rgba(255,255,255,.06);backdrop-filter:blur(2px)}
.hero-stats strong{display:block;font-size:28px;color:#fff}
.hero-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:3;width:52px;height:52px;border:1px solid rgba(255,255,255,.22);border-radius:999px;background:rgba(8,20,35,.42);color:#fff;font-size:34px;line-height:1;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:.25s}
.hero-arrow:hover{background:rgba(255,255,255,.14)}
.hero-arrow-prev{left:24px}
.hero-arrow-next{right:24px}
.hero-dots{position:absolute;left:50%;bottom:28px;z-index:3;display:flex;align-items:center;gap:10px;transform:translateX(-50%)}
.hero-dot{width:12px;height:12px;border:0;border-radius:999px;background:rgba(255,255,255,.42);box-shadow:0 0 0 1px rgba(255,255,255,.16) inset;cursor:pointer;transition:.25s}
.hero-dot:hover{background:rgba(255,255,255,.72)}
.hero-dot.is-active{width:28px;background:#fff}
.hero-strip{padding:18px 0;background:#fff;border-bottom:1px solid var(--line)}
.mini-metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.mini-metrics .feature{padding:20px 22px}
.mini-metrics h3{margin:0 0 6px;font-size:18px}
.mini-metrics p{margin:0;color:var(--muted)}
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.products-grid{grid-template-columns:repeat(2,1fr)}
.card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);overflow:hidden
}
.card-media{
  /* aspect-ratio:1/1; */
  background:linear-gradient(135deg,#dceeff,#f8fbff);
  position:relative
}
.card-media img{
  width:100%;object-fit:cover;
}
.card-body{padding:22px}
.card-body h3{margin:0 0 10px;border-bottom:1px solid #efefef;font-size:16px;font-weight:normal;color:#000}
.meta{display:flex;flex-wrap:wrap;gap:10px;margin:14px 0 0}
.meta span{padding:6px 10px;border-radius:999px;background:var(--bg);font-size:13px;color:var(--muted)}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.feature{
  padding:26px;border-radius:var(--radius);background:var(--white);border:1px solid var(--line);box-shadow:var(--shadow)
}
.feature h3{margin:0 0 10px;color:var(--dark)}
.split{
  display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:center
}
.panel{
  background:var(--white);border:1px solid var(--line);border-radius:28px;box-shadow:var(--shadow);padding:28px
}
.media-box{
  min-height:420px;border-radius:28px;
  background:linear-gradient(135deg,#d9ecfb,#eef7ff);
  position:relative;overflow:hidden
}
.media-box:before{
  content:"GuangZhou HuanYu Drilling Rigs";position:absolute;left:24px;bottom:24px;
  font-size:14px;color:var(--primary);padding:8px 14px;border-radius:999px;background:#fff;border:1px solid #bfdbfe
}
.about-section{background:#f8fbff}
.about-head{display:block;margin-bottom:28px}
.about-subtitle{max-width:760px;}
.about-image{
  margin-bottom:24px;border-radius:24px;overflow:hidden;background:linear-gradient(135deg,#d9ecfb,#eef7ff);
  border:1px solid var(--line);box-shadow:var(--shadow)
}
.about-image img{display:block;width:100%;height:auto;aspect-ratio:16/7;object-fit:cover}
.about-grid{align-items:stretch}
.list{display:grid;gap:18px}
.list-item{
  display:grid;grid-template-columns:160px 1fr;gap:20px;padding:18px;border:1px solid var(--line);
  border-radius:18px;background:var(--white)
}
.thumb{
  min-height:110px;border-radius:14px;background:linear-gradient(135deg,#dceeff,#f8fbff)
}
.breadcrumb{padding:18px 0;border-bottom:1px solid var(--line);font-size:14px;color:var(--muted)}
.page-banner{
  position: relative; 
  z-index: 1;
  padding:70px 0;background:linear-gradient(180deg,#f8fbff 0%,#fff 100%);
  border-bottom:1px solid var(--line)
}
.page-banner::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0.3;
  background: url(../images/p_bg.jpg);
  background-size: cover;
  z-index: -1;
}
.page-banner h1{margin:12px 0 10px;font-size:clamp(32px,4vw,48px);color:var(--dark)}
.subnav{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
.subnav a{padding:10px 16px;border-radius:999px;background:#fff;border:1px solid var(--line);font-weight:700;color:#334155;box-shadow:var(--shadow)}
.subnav a:hover,.subnav a.active{background:#e8f3fb;color:var(--primary);border-color:#bfdbfe}
.content-wrap{display:grid;grid-template-columns:1fr 320px;gap:30px}
.sidebar{display:grid;gap:24px}
.widget{padding:22px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:var(--shadow)}
.widget h3{margin:0 0 14px;color:var(--dark);font-size:20px}
.side-links{display:grid;gap:12px}
.side-links a{padding:12px 14px;border-radius:12px;background:var(--bg);font-weight:600;color:#1e293b}
.side-links a:hover,.side-links a.active{background:#e8f3fb;color:var(--primary)}

/* 文章样式 */
.article{
  padding:30px;border:1px solid var(--line);border-radius:28px;background:#fff;box-shadow:var(--shadow)
}
.article h2,.article h3{color:var(--dark)}
.article p{margin:0 0 16px}
.article table{width:100%;border-collapse:collapse;margin:20px 0}
.article th,.article td{padding:14px;border:1px solid var(--line);text-align:left}
.article th{background:#f8fbff}
.article-banner{
  height:410px;border-radius:24px;margin-bottom:26px;overflow: hidden;
}
.article-banner img{
  margin: 0 auto;
}
.product-meta{ text-indent: 16px; color: #9e9e9e;}

/* ==========================================================================
   正文区域（.article-content）专属样式优化
   ========================================================================== */

.article-content {
    color: #334155;             /* 深灰文字，比纯黑更高端且易读 */
    font-size: 16px;            /* 外贸站黄金阅读字号 */
    line-height: 1.8;           /* 宽松的行高，极大提升英文长文阅读体验 */
    word-wrap: break-word;      /* 强制长单词换行，防止英文撑破布局 */
    word-break: break-word;
}

/* --- 1. 标题层级控制 (解决后台编辑的大标题样式) --- */
.article-content h1,
.article-content h2,
.article-content h3,
.article-content h4 {
    color: #0f4c81;             /* 建议改为你网站的主色调 */
    font-weight: 700;
    line-height: 1.4;
    margin: 35px 0 18px;        /* 上留白多，下留白少，符合视觉排版逻辑 */
}
.article-content h1 { font-size: clamp(24px, 2.5vw, 32px); }
.article-content h2 { font-size: clamp(20px, 2vw, 26px); border-left: 4px solid #0f4c81; padding-left: 12px; } /* 自动为H2加左边框线装饰 */
.article-content h3 { font-size: clamp(18px, 1.5vw, 22px); }

/* --- 2. 段落与文本样式 --- */
.article-content p {
    margin: 0 0 16px 0;         /* 严格控制段落间距 */
}
.article-content strong, 
.article-content b {
    color: #1e293b;             /* 加粗文字颜色加深，突出重点 */
    font-weight: 600;
}

/* --- 3. 响应式媒体控制（核心：防止大图撑破手机端） --- */
.article-content img {
    max-width: 100% !important; /* 强制图片永不超出容器宽度 */
    height: auto !important;    /* 高度自适应，防止图片变形 */
    display: block;
    margin: 24px auto;          /* 富文本内的图片自动居中并带有上下间距 */
    border-radius: 8px;         /* 顺应现代UI设计微圆角风格 */
    box-shadow: 0 4px 20px rgba(0,0,0,0.05); /* 微弱阴影提升质感 */
}
.article-content video,
.article-content iframe {
    max-width: 100% !important;
    width: 100% !important;
    height: auto;
    aspect-ratio: 16 / 9;       /* 强制定型外贸常见的 YouTube 嵌入视频比例 */
    margin: 24px 0;
    border-radius: 8px;
}

/* --- 4. 引用块 (Blockquote) 样式修正 --- */
.article-content blockquote {
    margin: 24px 0;
    padding: 18px 20px;
    border-left: 4px solid #0f4c81;
    background: #f8fbff;
    border-radius: 0 12px 12px 0;
    color: #475569;
    font-style: italic;         /* 英文引用斜体非常好看 */
}
.article-content blockquote p {
    margin: 0;                  /* 清除内部段落自带的间距 */
}

/* --- 5. 列表样式（解决富文本内ul/ol没有点和数字的问题） --- */
.article-content ul,
.article-content ol {
    margin: 0 0 20px 24px;
    padding: 0;
}
.article-content ul { list-style-type: disc; }
.article-content ol { list-style-type: decimal; }
.article-content li {
    margin-bottom: 8px;
    padding-left: 4px;
}

/* --- 6. 响应式表格（解决外贸站参数表格撑破手机端的问题） --- */
.article-content table {
    width: 100% !important;
    max-width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    font-size: 14px;
    /* 配合下方伪元素实现手机端横向滚动查看表格 */
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}
.article-content table th,
.article-content table td {
    border: 1px solid #e2e8f0;
    padding: 12px 14px;
    text-align: left;
}
.article-content table th {
    background-color: #f8fbff;
    color: #1e293b;
    font-weight: 600;
}
.article-content table tr:nth-child(even) {
    background-color: #fcfdfe; /* 隔行变色，方便阅读数据 */
}

/* 分页器外层容器 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 40px;
    padding: 20px 0;
}

/* 分页器内的所有数字和按钮链接 */
.pagination a, .pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 6px;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    color: #4a5568;
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s ease;
}

/* 鼠标悬停样式 */
.pagination a:hover {
    border-color: #3182ce;
    color: #3182ce;
    background-color: #f7fafc;
}

/* 当前所在页面的高亮数字样式（系统默认输出的激活标签可能是 span 或是带 active 类的 a） */
.pagination .active, 
.pagination span:not([class]) {
    border-color: #3182ce;
    color: #ffffff !important;
    font-weight: 600;
}
.faq{display:grid;gap:14px}
.faq-item{border:1px solid var(--line);border-radius:18px;overflow:hidden;background:#fff}
.faq-q{
  width:100%;padding:18px 20px;background:#fff;border:0;text-align:left;font-weight:700;
  display:flex;justify-content:space-between;gap:10px;cursor:pointer
}
.faq-a{display:none;padding:0 20px 18px;color:var(--muted)}
.faq-item.active .faq-a{display:block}
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.field{display:grid;gap:8px}
.field label{font-weight:700;color:#0f172a}
.field input,.field textarea,.field select{
  width:100%;padding:14px 16px;border:1px solid #cbd5e1;border-radius:14px;background:#fff
}
.field textarea{min-height:140px;resize:vertical}
.cta-box{
  padding:34px;border-radius:28px;color:#fff;
  background:linear-gradient(135deg,#0f4c81,#1e7bbf)
}
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.field{display:grid;gap:8px}
.field label{font-weight:700;color:#0f172a}
.field input,.field textarea,.field select{
  width:100%;padding:14px 16px;border:1px solid #cbd5e1;border-radius:14px;background:#fff
}
.field textarea{min-height:140px;resize:vertical}
.cta-box{
  padding:34px;border-radius:28px;color:#fff;
  background:linear-gradient(135deg,#0f4c81,#1e7bbf)
}
.footer{
  background:linear-gradient(180deg,#f8fbff 0%,#f1f6fb 100%);color:#64748b;padding:56px 0 20px;margin-top:72px;border-top:1px solid var(--line)
}
.footer-grid{display:grid;grid-template-columns:1.1fr .8fr .8fr 1fr;gap:28px}
.footer h3{margin:0 0 14px;color:var(--dark)}
.footer a{color:#64748b}
.footer a:hover{color:var(--primary)}
.footer .side-links{gap:10px}
.footer .side-links a{padding:0;background:transparent;border-radius:0;box-shadow:none}
.footer-bottom{
  margin-top:28px;padding-top:18px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;color:#64748b
}
.floating-contact{
  position:fixed;right:18px;bottom:18px;display:grid;gap:12px;z-index:50
}
.floating-contact a{
  min-width:52px;height:52px;padding:0 16px;border-radius:999px;background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:center;box-shadow:0 12px 24px rgba(15,76,129,.25);font-weight:700
}
.mobile-nav{display:none}
.mobile-drop{display:grid;gap:10px}
.mobile-drop summary{cursor:pointer;padding:12px 14px;border-radius:12px;background:var(--bg);font-weight:700;color:#0f172a}
.mobile-drop ul{display:grid;gap:8px;padding-left:12px}
.mobile-drop a{padding:5px 14px;border-radius:12px;background:#fff;font-weight:600;color:#475569;}
@media (max-width:1100px){
  .cards,.products-grid,.mini-metrics{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:1fr 1fr}
  .hero-layout,.split,.content-wrap,.footer-grid,.about-grid{grid-template-columns:1fr}
}
@media (max-width:820px){
  .logo{max-width: 50%;}
  .footer{padding: 0; margin: 0;}
  .topbar,.nav,.nav-cta,.footer-grid{display:none}
  .menu-toggle{display:flex}
  .mobile-nav{
    display:none;position:absolute;left:16px;right:16px;top:78px;padding:16px;
    background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)
  }
  .mobile-nav.open{display:grid;gap:10px}
  .mobile-nav > a{padding:12px 14px;border-radius:12px;background:var(--bg);font-weight:700}
  .hero-slider{min-height:auto}
  .hero-layout{min-height:auto;padding:96px 0 88px}
  .hero-copy{padding:22px}
  .hero-arrow{width:44px;height:44px;font-size:28px}
  .hero-dots{bottom:18px}
  .hero-dot{width:10px;height:10px}
  .hero-dot.is-active{width:22px}
  .hero-stats,.grid-2,.list-item,.product-points,.spec-grid{grid-template-columns:1fr}
  .product-gallery{height:320px}
}
@media (max-width:640px){
  .section{padding:56px 0}
  .title{font-size:32px}
  .cards,.products-grid,.grid-3,.mini-metrics{grid-template-columns:1fr}
  .topbar .container,.section-head,.footer-bottom{flex-direction:column;align-items:flex-start}
  .article,.panel,.feature,.widget,.cta-box{padding:22px}
  .page-banner{padding:48px 0}
  .subnav{gap:10px}
  .subnav a{width:100%;text-align:center}
}