/* =============================================================
   cloud-server.css —— 服务器与云主机
   机房深色背景首屏 + 配置表 + 左右交错 + 深色迁移区
   ============================================================= */

/* 1. 机房背景首屏 */
.cs-hero{
  padding:calc(var(--header-h) + var(--topbar-h) + 90px) 0 110px;
  background:
    linear-gradient(135deg, rgba(42,38,32,.92) 0%, rgba(42,38,32,.7) 100%),
    url("../images/banner-server.jpg") center/cover no-repeat;
  color:#EDE7DA;position:relative;
}
.cs-hero-inner{max-width:820px}
.cs-hero-kicker{
  font-size:12.5px;letter-spacing:.34em;color:var(--earth-light);margin-bottom:24px;
}
.cs-hero-title{
  font-size:clamp(32px,4.8vw,54px);line-height:1.32;color:#EFE9DC;margin-bottom:26px;
}
.cs-hero-title em{
  font-style:normal;color:var(--earth-light);
  border-bottom:3px solid var(--earth);
}
.cs-hero-sub{
  font-size:16px;color:#C9C1B2;line-height:1.95;max-width:640px;margin-bottom:32px;
}
.cs-hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:18px}
.cs-hero-contact{font-size:13px;color:#A49C8C}
.cs-hero-contact a{color:#EDE7DA;border-bottom:1px dashed rgba(201,193,178,.4)}
.cs-hero-contact a:hover{color:var(--earth-light)}

/* 2. 配置表 */
.cs-spec-table{
  border:1px solid var(--line);background:var(--paper);
}
.cs-spec-row{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1fr;
  padding:18px 24px;align-items:center;
  border-bottom:1px solid var(--line);font-size:14px;
}
.cs-spec-row:last-child{border-bottom:none}
.cs-spec-row--head{
  background:var(--dark);color:#EDE7DA;font-weight:600;font-size:13.5px;
  letter-spacing:.08em;
}
.cs-spec-row--head span{color:#C9C1B2}
.cs-spec-row:not(.cs-spec-row--head):hover{background:var(--paper-deep)}
.cs-spec-row span:first-child{font-weight:600;color:var(--ink)}
.cs-spec-note{
  margin-top:16px;font-size:12.5px;color:var(--ink-faint);line-height:1.8;
}

/* 3. 带宽与防护 */
.cs-bw-section{background:var(--paper-deep)}
.cs-bw-wrap{
  display:grid;grid-template-columns:1.2fr 1fr;gap:60px;align-items:center;
}
.cs-bw-copy h2{margin-bottom:18px}
.cs-bw-copy .lead{margin-bottom:22px}
.cs-bw-list{display:flex;flex-direction:column;gap:14px}
.cs-bw-list li{
  font-size:14px;color:var(--ink-soft);line-height:1.85;
  padding-left:18px;position:relative;
}
.cs-bw-list li::before{
  content:"";position:absolute;left:0;top:11px;
  width:8px;height:8px;background:var(--earth);
  border-radius:50%;
}
.cs-bw-list b{color:var(--ink);font-family:var(--font-serif)}
.cs-bw-list a{color:var(--earth-deep);border-bottom:1px solid var(--line)}
.cs-bw-list a:hover{color:var(--earth)}

.cs-bw-photo{position:relative}
.cs-bw-photo img{
  width:100%;border-radius:var(--radius);filter:saturate(.85);
}
.cs-bw-tag{
  position:absolute;left:18px;bottom:18px;
  background:rgba(42,38,32,.85);color:#EDE7DA;
  padding:8px 16px;font-size:12px;letter-spacing:.18em;
}

/* 4. 备份 */
.cs-backup-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-bottom:24px;
}
.cs-backup{
  background:var(--paper);border:1px solid var(--line);
  padding:32px 26px;position:relative;
}
.cs-backup-num{
  font-family:var(--font-serif);font-size:48px;color:var(--brown-pale);
  line-height:1;display:block;margin-bottom:14px;
}
.cs-backup h3{font-size:18px;margin-bottom:10px}
.cs-backup p{font-size:13.8px;color:var(--ink-soft);line-height:1.85}
.cs-backup-tip{
  background:var(--paper-deep);padding:18px 24px;
  border-left:3px solid var(--earth);
  font-size:14px;color:var(--ink-soft);line-height:1.85;
}

/* 5. 迁移深色区 */
.cs-migrate-section{background:var(--dark)}
.cs-migrate-wrap{
  display:grid;grid-template-columns:1.3fr 1fr;gap:60px;align-items:start;
}
.cs-migrate-copy .section-title{color:#EFE9DC;margin-bottom:18px}
.cs-migrate-copy .lead{color:#C9C1B2;margin-bottom:24px}
.cs-migrate-steps{
  counter-reset:mstep;display:flex;flex-direction:column;gap:12px;
}
.cs-migrate-steps li{
  counter-increment:mstep;
  background:var(--dark-soft);padding:14px 18px 14px 56px;
  position:relative;color:#D8D2C6;font-size:13.8px;line-height:1.8;
  list-style:none;
}
.cs-migrate-steps li::before{
  content:counter(mstep,decimal-leading-zero);
  position:absolute;left:16px;top:14px;
  font-family:var(--font-serif);font-size:18px;color:var(--earth-light);
}
.cs-migrate-steps b{color:#EDE7DA}

.cs-migrate-side{display:flex;flex-direction:column;gap:18px}
.cs-migrate-card{
  background:rgba(174,135,73,.1);border:1px solid rgba(174,135,73,.3);
  padding:28px 24px;border-radius:var(--radius);
}
.cs-migrate-card-label{
  font-size:12px;letter-spacing:.24em;color:var(--earth-light);margin-bottom:10px;
}
.cs-migrate-card-num{
  font-family:var(--font-serif);font-size:48px;color:#EFE9DC;line-height:1;
}
.cs-migrate-card-num small{font-size:16px;color:#A49C8C;margin-left:4px}
.cs-migrate-card-note{
  margin-top:10px;font-size:12.5px;color:#B9B1A2;line-height:1.8;
}

/* 6. VPS 对比 */
.cs-vps-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:22px;
}
.cs-vps{
  background:var(--paper);border:1px solid var(--line);
  padding:34px 28px;position:relative;
}
.cs-vps--hot{
  border-color:var(--earth);box-shadow:var(--shadow);
  background:var(--paper-deep);
}
.cs-vps-flag{
  position:absolute;top:0;right:20px;
  background:var(--earth);color:#FBF7EF;
  font-size:11.5px;letter-spacing:.2em;padding:6px 14px;
}
.cs-vps h3{font-size:19px;margin-bottom:8px}
.cs-vps-price{
  font-family:var(--font-serif);font-size:22px;color:var(--earth-deep);margin-bottom:14px;
}
.cs-vps p{font-size:13.8px;color:var(--ink-soft);line-height:1.85;margin-bottom:14px}
.cs-vps-when{
  font-size:12.5px;color:var(--ink-faint);
  border-top:1px dashed var(--line);padding-top:12px;
}

/* 7. 交付物 */
.cs-deliver-section{background:var(--paper-deep)}
.cs-deliver-list{
  display:grid;grid-template-columns:repeat(3,1fr);gap:18px;
}
.cs-deliver-item{
  background:var(--paper);padding:26px 22px;border-left:3px solid var(--earth);
}
.cs-deliver-item span{
  font-family:var(--font-serif);font-size:14px;color:var(--earth-deep);
  letter-spacing:.18em;display:block;margin-bottom:8px;
}
.cs-deliver-item h3{font-size:16.5px;margin-bottom:6px}
.cs-deliver-item p{font-size:13px;color:var(--ink-soft);line-height:1.8}

/* 8. 相关 */
.cs-related-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:18px;
}
.cs-related{
  background:var(--paper);border:1px solid var(--line);
  padding:26px 22px;transition:all .3s ease;
}
.cs-related:hover{transform:translateY(-4px);border-color:var(--earth)}
.cs-related h3{font-size:16.5px;margin-bottom:8px}
.cs-related p{font-size:13px;color:var(--ink-soft);line-height:1.8}

/* 9. CTA */
.cs-cta-section{
  background:
    linear-gradient(135deg, rgba(42,38,32,.94), rgba(58,53,44,.94)),
    url("../images/about-meeting.jpg") center/cover no-repeat;
  color:#EDE7DA;
}
.cs-cta-wrap{
  display:grid;grid-template-columns:1.4fr 1fr;gap:40px;align-items:center;
}
.cs-cta-title{font-size:clamp(24px,3.2vw,36px);color:#EFE9DC;line-height:1.45;margin-bottom:14px}
.cs-cta-sub{font-size:14.5px;color:#C9C1B2;margin-bottom:24px}
.cs-cta-contacts{display:flex;gap:12px;flex-wrap:wrap}
.cs-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);
}
.cs-cta-contact:hover{background:var(--earth);border-color:var(--earth)}
.cs-cta-contact svg{width:16px;height:16px;fill:var(--earth-light)}
.cs-cta-contact:hover svg{fill:#fff}
.cs-cta-contact span{display:flex;flex-direction:column;font-size:13.5px;color:#EDE7DA}
.cs-cta-contact small{font-size:10.5px;color:#A49C8C;letter-spacing:.18em}
.cs-cta-btn{justify-self:end}

@media (max-width:991px){
  .cs-bw-wrap,.cs-migrate-wrap,.cs-cta-wrap{grid-template-columns:1fr;gap:36px}
  .cs-spec-row{grid-template-columns:1fr 1fr;gap:6px;padding:14px 18px}
  .cs-spec-row--head{display:none}
  .cs-backup-grid,.cs-vps-grid{grid-template-columns:1fr}
  .cs-deliver-list,.cs-related-grid{grid-template-columns:1fr 1fr}
  .cs-cta-btn{justify-self:stretch;text-align:center}
}
@media (max-width:640px){
  .cs-deliver-list,.cs-related-grid{grid-template-columns:1fr}
}