/* =============================================================
   enterprise-mail.css —— 企业邮箱
   左文右邮箱 mockup 首屏 + 三档服务商 + 左右交错流程 + 深色防冒充
   ============================================================= */

/* 1. 首屏 */
.em-hero{
  padding:calc(var(--header-h) + var(--topbar-h) + 60px) 0 90px;
  background:linear-gradient(135deg, var(--paper) 0%, var(--paper-deep) 100%);
}
.em-hero-inner{
  display:grid;grid-template-columns:1.15fr 1fr;gap:60px;align-items:center;
}
.em-hero-kicker{font-size:12.5px;letter-spacing:.34em;color:var(--earth-deep);margin-bottom:22px}
.em-hero-title{font-size:clamp(28px,4.2vw,46px);line-height:1.35;margin-bottom:22px}
.em-hero-em{
  color:var(--earth-deep);
  font-family:var(--font-mono, monospace);
  font-size:.86em;
  background:rgba(174,135,73,.12);
  padding:2px 8px;border-radius:4px;
}
.em-hero-sub{font-size:15.5px;color:var(--ink-soft);line-height:1.95;margin-bottom:28px;max-width:560px}
.em-hero-actions{margin-bottom:16px}
.em-hero-contact{font-size:13px;color:var(--ink-faint)}
.em-hero-contact a{color:var(--ink);border-bottom:1px dashed var(--line-strong)}
.em-hero-contact a:hover{color:var(--earth-deep)}

.em-hero-visual{display:flex;justify-content:center}
.em-mail-mock{
  width:100%;max-width:420px;background:var(--paper);
  border:1px solid var(--line-strong);border-radius:10px;
  box-shadow:var(--shadow);overflow:hidden;
}
.em-mail-bar{
  background:var(--paper-deep);padding:10px 14px;
  display:flex;gap:6px;
}
.em-dot{width:10px;height:10px;border-radius:50%;background:var(--line-strong)}
.em-mail-body{display:grid;grid-template-columns:110px 1fr;min-height:260px}
.em-mail-side{
  background:var(--paper-deep);padding:14px 10px;
  display:flex;flex-direction:column;gap:8px;
}
.em-side-item{
  font-size:12px;color:var(--ink-soft);padding:6px 8px;border-radius:4px;
  display:flex;justify-content:space-between;
}
.em-side-item b{color:var(--earth-deep)}
.em-side-item--active{background:var(--paper);color:var(--ink);font-weight:600}
.em-mail-main{padding:14px;display:flex;flex-direction:column;gap:10px}
.em-mail-row{
  font-size:11.5px;line-height:1.6;padding:8px 10px;
  background:var(--paper-deep);border-radius:4px;
}
.em-mail-row b{font-size:12px;color:var(--ink);margin-right:8px}
.em-mail-row span{float:right;color:var(--ink-faint);font-size:10.5px}
.em-mail-row p{margin-top:4px;color:var(--ink-soft)}

/* 2. 为什么不用免费 */
.em-why-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:18px;
}
.em-why{
  background:var(--paper);padding:28px 22px;border:1px solid var(--line);
  border-top:3px solid var(--brown);
}
.em-why h3{font-size:16.5px;margin-bottom:8px}
.em-why p{font-size:13.5px;color:var(--ink-soft);line-height:1.85}

/* 3. 服务商 */
.em-vendor-section{background:var(--paper-deep)}
.em-vendor-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
}
.em-vendor{
  background:var(--paper);padding:32px 26px;border:1px solid var(--line);
}
.em-vendor h3{font-size:20px;margin-bottom:6px}
.em-vendor-sub{font-size:12.5px;color:var(--earth-deep);margin-bottom:18px;letter-spacing:.05em}
.em-vendor ul{
  list-style:none;display:flex;flex-direction:column;gap:10px;
  font-size:13.5px;color:var(--ink-soft);line-height:1.8;
  padding-top:18px;border-top:1px solid var(--line);
}
.em-vendor li::before{content:"—";color:var(--earth);margin-right:8px}

/* 4. 配置流程 */
.em-setup-wrap{
  display:grid;grid-template-columns:1.2fr 1fr;gap:50px;align-items:center;
}
.em-setup-copy h2{margin-bottom:18px}
.em-setup-steps{list-style:none;counter-reset:emstep;display:flex;flex-direction:column;gap:14px}
.em-setup-steps li{
  background:var(--paper);padding:18px 20px;border-left:3px solid var(--earth);
  font-size:13.8px;color:var(--ink-soft);line-height:1.85;
}
.em-setup-steps b{display:block;font-size:14.5px;color:var(--ink);margin-bottom:4px;font-family:var(--font-serif)}
.em-setup-steps a{color:var(--earth-deep);border-bottom:1px solid var(--line)}
.em-setup-photo img{width:100%;border-radius:var(--radius);filter:saturate(.9)}

/* 5. 防冒充深色 */
.em-security-section{background:var(--dark)}
.em-security-section .section-title{color:#EFE9DC}
.em-security-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:18px;
}
.em-security{
  background:var(--dark-soft);padding:28px 22px;border-top:3px solid var(--earth);
}
.em-security h3{color:#EFE9DC;font-size:16.5px;margin-bottom:8px;font-family:var(--font-mono, monospace)}
.em-security p{color:#B9B1A2;font-size:13.2px;line-height:1.85}

/* 6. 移动办公 */
.em-mobile-wrap{
  display:grid;grid-template-columns:1.4fr 1fr;gap:50px;align-items:center;
}
.em-mobile-wrap .lead{font-size:15px;color:var(--ink-soft);line-height:1.95}
.em-mobile-stats{
  display:grid;grid-template-columns:1fr 1fr;gap:14px;
}
.em-mobile-stats div{
  background:var(--paper-deep);padding:22px 18px;text-align:center;
}
.em-mobile-stats b{
  font-family:var(--font-serif);font-size:22px;color:var(--earth-deep);
  display:block;margin-bottom:4px;
}
.em-mobile-stats span{font-size:12.5px;color:var(--ink-faint)}

/* 7. FAQ */
.em-faq-section{background:var(--paper)}
.em-faq-list{max-width:880px;margin:0 auto}
.em-faq-list a{color:var(--earth-deep);border-bottom:1px solid var(--line)}

/* 8. CTA */
.em-cta-section{
  background:
    linear-gradient(135deg, rgba(42,38,32,.93), rgba(58,53,44,.93)),
    url("../images/banner-contact.jpg") center/cover no-repeat;
  color:#EDE7DA;
}
.em-cta-wrap{
  display:grid;grid-template-columns:1.4fr 1fr;gap:40px;align-items:center;
}
.em-cta-title{font-size:clamp(24px,3.2vw,36px);color:#EFE9DC;line-height:1.45;margin-bottom:14px}
.em-cta-sub{font-size:14.5px;color:#C9C1B2;margin-bottom:24px}
.em-cta-contacts{display:flex;gap:12px;flex-wrap:wrap}
.em-cta-contact{
  display:inline-flex;align-items:center;gap:10px;
  background:rgba(255,255,255,.08);border:1px solid rgba(201,193,178,.25);
  padding:11px 16px;border-radius:var(--radius);
}
.em-cta-contact:hover{background:var(--earth);border-color:var(--earth)}
.em-cta-contact svg{width:16px;height:16px;fill:var(--earth-light)}
.em-cta-contact:hover svg{fill:#fff}
.em-cta-contact span{display:flex;flex-direction:column;font-size:13.5px;color:#EDE7DA}
.em-cta-contact small{font-size:10.5px;color:#A49C8C;letter-spacing:.18em}
.em-cta-btn{justify-self:end}

.inline-link{color:var(--earth-deep);border-bottom:1px solid var(--line)}
.inline-link:hover{color:var(--earth)}

@media (max-width:991px){
  .em-hero-inner,.em-setup-wrap,.em-mobile-wrap,.em-cta-wrap{grid-template-columns:1fr;gap:36px}
  .em-why-grid,.em-security-grid{grid-template-columns:1fr 1fr}
  .em-vendor-grid{grid-template-columns:1fr}
  .em-cta-btn{justify-self:stretch;text-align:center}
}
@media (max-width:640px){
  .em-why-grid,.em-security-grid,.em-mobile-stats{grid-template-columns:1fr}
}