/* ============================================================
   en2.css — English Site v2 (foreigner-focused)
   Standalone stylesheet for /en/ — does not affect main site
   ============================================================ */

:root {
  --en2-navy: #0f2a43;
  --en2-blue: #1a4b7a;
  --en2-gold: #c9a227;
  --en2-light: #f5f7fa;
  --en2-gray: #5a6b7c;
  --en2-border: #e2e8f0;
}

body.en2 {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: #1e293b;
  line-height: 1.7;
  background: #fff;
}

body.en2 * { box-sizing: border-box; }

/* ---------- Nav ---------- */
.en2-nav {
  background: var(--en2-navy);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 12px rgba(15,42,67,.15);
}
.en2-nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
}
.en2-brand { text-decoration: none; display: flex; flex-direction: column; line-height: 1.25; }
.en2-brand-name { color: #fff; font-weight: 800; font-size: 1.2rem; letter-spacing: .02em; }
.en2-brand-firm { color: rgba(255,255,255,.65); font-size: .72rem; }
.en2-nav-links {
  display: flex; list-style: none; margin: 0; padding: 0; gap: 22px; align-items: center;
}
.en2-nav-links a {
  color: rgba(255,255,255,.88); text-decoration: none; font-size: .9rem; font-weight: 500;
  transition: color .2s;
}
.en2-nav-links a:hover { color: var(--en2-gold); }
.en2-nav-links .en2-lang-zh {
  border: 1px solid rgba(255,255,255,.4); border-radius: 4px; padding: 3px 10px; font-size: .8rem;
}
.en2-nav-toggle { display: none; background: none; border: none; color: #fff; font-size: 1.4rem; cursor: pointer; }

/* ---------- Layout ---------- */
.en2-content, .en2-page .en2-content {
  max-width: 860px;
  margin: 0 auto;
  padding: 48px 24px 64px;
}
.en2-content h1 { font-size: 2.1rem; line-height: 1.25; color: var(--en2-navy); margin: 0 0 12px; }
.en2-content h2 {
  font-size: 1.5rem; color: var(--en2-navy); margin: 48px 0 14px;
  padding-bottom: 8px; border-bottom: 3px solid var(--en2-gold);
}
.en2-content h3 { font-size: 1.15rem; color: var(--en2-navy); margin: 28px 0 10px; }
.en2-content p { margin: 0 0 16px; color: #334155; }
.en2-content img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin: 16px auto;
  display: block;
}
.en2-content ul, .en2-content ol { margin: 0 0 16px; padding-left: 24px; color: #334155; }
.en2-content li { margin-bottom: 6px; }
.en2-content a { color: var(--en2-blue); }
.en2-content blockquote {
  border-left: 4px solid var(--en2-gold); margin: 20px 0; padding: 12px 20px;
  background: var(--en2-light); color: #475569; border-radius: 0 6px 6px 0;
}
.en2-content table { border-collapse: collapse; width: 100%; margin: 16px 0; font-size: .92rem; }
.en2-content th, .en2-content td { border: 1px solid var(--en2-border); padding: 10px 14px; text-align: left; }
.en2-content th { background: var(--en2-light); color: var(--en2-navy); font-weight: 600; }
.en2-content code { background: var(--en2-light); padding: 2px 6px; border-radius: 4px; font-size: .88em; }
.en2-content hr { border: none; border-top: 1px solid var(--en2-border); margin: 40px 0; }

.en2-badge {
  display: inline-block; background: var(--en2-light); border: 1px solid var(--en2-border);
  border-radius: 20px; padding: 8px 18px; font-size: .88rem; color: var(--en2-navy); margin: 8px 0 24px;
}

/* ---------- Home hero with portrait ---------- */
.en2-hero-float { position: relative; }
.en2-hero-portrait {
  float: right;
  width: 210px;
  margin: 8px 0 20px 32px;
}
.en2-hero-img {
  width: 100%;
  height: auto;
  border-radius: 50%;
  box-shadow: 0 8px 24px rgba(15,42,67,.18);
  border: 3px solid #fff;
}
@media (max-width: 720px) {
  .en2-hero-portrait {
    float: none;
    width: 160px;
    margin: 0 auto 24px;
  }
}

/* ---------- CTA block ---------- */
.en2-cta {
  background: linear-gradient(135deg, var(--en2-navy), var(--en2-blue));
  color: #fff; border-radius: 12px; padding: 32px 36px; margin: 40px 0; text-align: center;
}
.en2-cta h3 { color: #fff; margin: 0 0 10px; font-size: 1.35rem; }
.en2-cta p { color: rgba(255,255,255,.85); margin: 0 0 20px; }
.en2-cta-buttons { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.en2-btn {
  display: inline-block; padding: 12px 26px; border-radius: 8px; text-decoration: none;
  font-weight: 600; font-size: .95rem; transition: transform .15s, box-shadow .15s;
}
.en2-btn:hover { transform: translateY(-2px); }
.en2-btn-primary { background: var(--en2-gold); color: var(--en2-navy); box-shadow: 0 4px 14px rgba(201,162,39,.35); }
.en2-btn-outline { border: 1.5px solid rgba(255,255,255,.7); color: #fff; }
/* 防通用链接色覆盖：CTA 内按钮文字保持自身颜色 */
.en2-content a.en2-btn-primary { background: var(--en2-gold); color: var(--en2-navy); }
.en2-content a.en2-btn-outline { color: #fff; }

/* ---------- Article list ---------- */
.en2-article-list { margin-top: 24px; display: grid; gap: 20px; }
.en2-article-card {
  border: 1px solid var(--en2-border); border-radius: 10px; padding: 24px;
  background: #fff; transition: box-shadow .2s;
}
.en2-article-card:hover { box-shadow: 0 8px 24px rgba(15,42,67,.1); }
.en2-article-card h3 { margin: 0 0 8px; }
.en2-article-card h3 a { color: var(--en2-navy); text-decoration: none; }
.en2-article-card h3 a:hover { color: var(--en2-blue); }
.en2-article-card p { margin: 0 0 12px; color: var(--en2-gray); font-size: .95rem; }
.en2-read-more { color: var(--en2-blue); font-weight: 600; text-decoration: none; font-size: .9rem; }
.en2-read-more:hover { text-decoration: underline; }

/* ---------- Footer ---------- */

@media (max-width: 1024px) { .en2-footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; } }
.en2-footer { background: var(--en2-navy); color: rgba(255,255,255,.8); margin-top: 40px; }
.en2-footer-inner { max-width: 1100px; margin: 0 auto; padding: 48px 24px 24px; }
.en2-footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; }
.en2-footer h4 { color: #fff; margin: 0 0 12px; font-size: 1rem; }
.en2-footer p { margin: 0; font-size: .9rem; line-height: 1.8; color: rgba(255,255,255,.75); }
.en2-footer a { color: var(--en2-gold); text-decoration: none; }
.en2-footer a:hover { text-decoration: underline; }
.en2-footer-bottom {
  border-top: 1px solid rgba(255,255,255,.15); margin-top: 40px; padding-top: 18px;
  font-size: .82rem; color: rgba(255,255,255,.55);
}
.en2-footer-bottom a { color: rgba(255,255,255,.8); }

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .en2-nav-toggle { display: block; }
  .en2-nav-links {
    display: none; position: absolute; top: 64px; left: 0; right: 0;
    background: var(--en2-navy); flex-direction: column; padding: 16px 24px; gap: 14px; align-items: flex-start;
  }
  .en2-nav-links.open { display: flex; }
  .en2-content { padding: 32px 18px 48px; }
  .en2-content h1 { font-size: 1.6rem; }
  .en2-content h2 { font-size: 1.25rem; }
  .en2-footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .en2-cta { padding: 26px 20px; }
  .en2-cta-buttons { flex-direction: column; }
  .en2-btn { width: 100%; text-align: center; }
}

/* ========== 全站互动效果 (en) ========== */
/* FAQ 手风琴 */
.faq-accordion { margin: 20px 0; }
.faq-item { border: 1px solid var(--en2-border); border-radius: 10px; margin-bottom: 10px; overflow: hidden; background: #fff; }
.faq-q {
  width: 100%; text-align: left; background: var(--en2-light); border: none; cursor: pointer;
  padding: 16px 20px; font-size: 1.02rem; font-weight: 600; color: var(--en2-navy);
  display: flex; justify-content: space-between; align-items: center; gap: 12px; transition: background .2s;
}
.faq-q::after { content: '+'; font-size: 1.3rem; color: var(--en2-gold); transition: transform .25s ease; flex-shrink: 0; }
.faq-item .faq-q[aria-expanded="true"]::after { transform: rotate(45deg); }
.faq-q:hover { background: #eef3f9; }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .35s ease, padding .35s ease; padding: 0 20px; }
.faq-a.open { max-height: 800px; padding: 16px 20px 18px; }
.faq-a p { margin: 0 0 10px; }
.faq-a p:last-child { margin-bottom: 0; }

/* 滚动渐入 */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.revealed { opacity: 1; transform: none; }

/* 返回顶部 */
.back-to-top {
  position: fixed; right: 22px; bottom: 22px; z-index: 999;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--en2-navy); color: #fff; font-size: 1.25rem; line-height: 1;
  display: flex; align-items: center; justify-content: center;
  text-decoration: none; opacity: 0; visibility: hidden; transform: translateY(12px);
  transition: opacity .3s ease, transform .3s ease, visibility .3s, background .3s;
  box-shadow: 0 4px 14px rgba(0,0,0,.25);
}
.back-to-top.show { opacity: 1; visibility: visible; transform: none; }
.back-to-top:hover { background: var(--en2-gold); color: var(--en2-navy); }

/* Selected Results 数字 */
.stat-num { color: var(--en2-gold); font-weight: 700; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ===== 英文首页留言板 ===== */
.en2-guestbook {
  background: var(--en2-light);
  border-top: 1px solid var(--en2-border);
  padding: 48px 0 56px;
  margin-top: 8px;
}
.en2-guestbook h2 {
  font-size: 1.6rem; color: var(--en2-navy); text-align: center; margin: 0 0 8px;
}
.en2-guestbook-sub {
  text-align: center; color: var(--en2-gray); margin: 0 0 28px; font-size: .98rem;
}
.en2-guestbook-form {
  max-width: 640px; margin: 0 auto; background: #fff; border: 1px solid var(--en2-border);
  border-radius: 12px; padding: 28px 32px; box-shadow: 0 2px 12px rgba(15,42,67,.06);
}
.en2-form-group { margin-bottom: 1.1rem; }
.en2-form-group label { display: block; margin-bottom: .4rem; font-weight: 600; color: var(--en2-navy); font-size: .92rem; }
.en2-form-group label .req { color: #c0392b; }
.en2-form-group input[type="text"],
.en2-form-group textarea {
  width: 100%; padding: .65rem .9rem; font-size: .95rem; color: #333;
  border: 1px solid var(--en2-border); border-radius: 8px; background: #fff;
  transition: border-color .2s, box-shadow .2s; font-family: inherit;
}
.en2-form-group input:focus, .en2-form-group textarea:focus {
  outline: none; border-color: var(--en2-gold); box-shadow: 0 0 0 3px rgba(201,162,39,.15);
}
.en2-form-actions { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.en2-btn-gold {
  background: var(--en2-gold); color: var(--en2-navy); border: none; cursor: pointer;
  padding: 12px 26px; border-radius: 8px; font-weight: 600; font-size: .95rem;
  transition: transform .15s, box-shadow .15s;
}
.en2-btn-gold:hover { transform: translateY(-2px); box-shadow: 0 4px 14px rgba(201,162,39,.35); }
.en2-btn-gold:disabled { opacity: .6; cursor: not-allowed; }
.en2-form-status { font-size: .9rem; color: var(--en2-gray); }
.en2-form-status.ok { color: #1a7f37; }
.en2-form-status.err { color: #c0392b; }
.en2-form-privacy { font-size: .78rem; color: var(--en2-gray); margin: 12px 0 0; }
@media (max-width: 600px) {
  .en2-guestbook-form { padding: 20px 18px; }
  .en2-form-actions { flex-direction: column; align-items: stretch; }
}

/* ===== 悬浮留言按钮（英文版配色） ===== */
.guestbook-float {
  position: fixed; right: 22px; bottom: 78px; z-index: 998;
  padding: 10px 18px; border-radius: 999px;
  background: rgba(15,42,67,.8); color: #fff;
  font-size: .85rem; font-weight: 600; text-decoration: none; line-height: 1;
  display: inline-flex; align-items: center; gap: 6px;
  border: 1px solid rgba(255,255,255,.25);
  opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: opacity .3s ease, transform .3s ease, visibility .3s, background .3s;
  box-shadow: 0 4px 14px rgba(0,0,0,.18);
  backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
}
.guestbook-float.show { opacity: 1; visibility: visible; transform: none; }
.guestbook-float:hover { background: var(--en2-gold); color: var(--en2-navy); border-color: var(--en2-gold); }

/* ===== 文章/业绩列表与详情（/en/ 原生栏目） ===== */
.en2-card-meta { color: var(--en2-gray); font-size: .82rem; margin: 0 0 6px; }
.en2-article-card h3 { margin-bottom: 4px; }
.en2-detail h1 { margin-bottom: 8px; }
.en2-article-meta { color: var(--en2-gray); font-size: .9rem; margin: 0 0 14px; }
.en2-lead { color: #334155; font-size: 1.03rem; line-height: 1.7; }
.en2-article-back { margin-top: 36px; padding-top: 18px; border-top: 1px solid var(--en2-border); }
.en2-article-back a { color: var(--en2-blue); font-weight: 600; text-decoration: none; }
.en2-article-back a:hover { text-decoration: underline; }

/* ===== About 页 ===== */
.en2-about-grid { display: grid; grid-template-columns: 300px 1fr; gap: 40px; align-items: start; margin-top: 28px; }
.en2-about-side { text-align: center; }
.en2-about-portrait {
  width: 100%; height: auto; border-radius: 50%; border: 3px solid var(--en2-gold);
  box-shadow: 0 8px 24px rgba(15,42,67,.18);
}
.en2-about-side h3 { color: var(--en2-navy); margin: 18px 0 4px; font-size: 1.25rem; }
.en2-about-role { color: var(--en2-gray); font-size: .9rem; margin: 0 0 18px; }
.en2-about-info { list-style: none; padding: 0; margin: 0; text-align: left; font-size: .88rem; color: #475569; }
.en2-about-info li { display: flex; gap: 10px; padding: 9px 0; border-bottom: 1px solid var(--en2-border); line-height: 1.6; }
.en2-about-ico { flex-shrink: 0; }
.en2-about-body h2:first-child { margin-top: 0; }
.en2-about-body h2 { margin-top: 40px; }
.en2-timeline { margin-top: 10px; }
.en2-timeline-item { display: flex; gap: 18px; padding-bottom: 26px; position: relative; }
.en2-timeline-item::before { content: ''; position: absolute; left: 6px; top: 16px; bottom: 0; width: 2px; background: var(--en2-border); }
.en2-timeline-item:last-child::before { display: none; }
.en2-timeline-item:last-child { padding-bottom: 0; }
.en2-timeline-dot { flex-shrink: 0; width: 14px; height: 14px; border-radius: 50%; background: var(--en2-gold); margin-top: 6px; position: relative; z-index: 1; }
.en2-timeline-label { color: var(--en2-gray); font-size: .78rem; letter-spacing: .04em; }
.en2-timeline-body h4 { margin: 4px 0; color: var(--en2-navy); font-size: 1rem; }
.en2-timeline-body p { margin: 0; color: #475569; font-size: .92rem; }
@media (max-width: 900px) {
  .en2-about-grid { grid-template-columns: 1fr; }
  .en2-about-side { max-width: 240px; margin: 0 auto; }
}

/* 导航当前位置高亮（/en/ 全站统一） */
.en2-nav-links a.en2-active { color: var(--en2-gold); font-weight: 600; }