/* ==========================================================================
   mbexlc.com · 墨白互联 — 首页专属样式（page-index.css）
   指纹：F8 弧线流动 —— 区块间以曲线/弧线衔接，卡片沿弧线错排
   结构：Banner → 核心优势 → 服务入口 → 案例 → 流程 → 为什么选我们
         → 资讯列表 → 全页 CTA
   ========================================================================== */

/* ===== ① 全屏 Banner ===== */
.home-hero{
  position:relative;display:flex;align-items:center;
  min-height:100vh;
  min-height:calc(100svh - 112px);
  padding:96px 0 130px;
  color:var(--moon-100);
  background:
    linear-gradient(100deg, rgba(29,52,38,.88) 8%, rgba(29,52,38,.62) 52%, rgba(38,37,31,.38)),
    url(../images/banner-home.jpg) center/cover no-repeat;
}
.hero-inner{position:relative;z-index:2}
.hero-kicker{color:var(--moon-200);margin-bottom:22px}
.hero-kicker::before,.hero-kicker::after{background:var(--cinnabar-400)}
.hero-title{
  font-size:clamp(34px,6.4vw,66px);line-height:1.28;letter-spacing:.04em;
  color:#fff;font-weight:900;
}
.hero-title span{color:var(--cinnabar-400);position:relative;white-space:nowrap}
.hero-title span::after{
  content:"";position:absolute;left:0;right:0;bottom:6px;height:10px;
  background:rgba(192,47,43,.28);z-index:-1;
}
.hero-lead{margin-top:22px;max-width:620px;font-size:clamp(15px,1.6vw,18px);line-height:2.05;color:rgba(247,245,238,.82)}
.hero-cta{margin-top:34px;display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.hero-note{margin-top:20px;font-size:13.5px;letter-spacing:.12em;color:rgba(247,245,238,.6)}
.hero-arc{
  position:absolute;left:0;right:0;bottom:-1px;width:100%;height:90px;
  display:block;z-index:1;
}

/* ===== ② 核心优势（弧线错排） ===== */
.home-adv{padding-top:clamp(48px,6vw,80px)}
.adv-grid{position:relative;display:grid;grid-template-columns:1fr;gap:16px;margin-top:44px}
.adv-curve{display:none}
.adv-card{
  position:relative;background:#fff;border-radius:var(--radius-lg);
  padding:28px 26px;box-shadow:var(--shadow-soft);
}
.adv-card h3{font-size:20px;margin:10px 0 8px}
.adv-card p{font-size:14.5px;line-height:1.95;color:var(--ink-500)}
.adv-no{font-family:var(--serif);font-size:42px;line-height:1;color:var(--cinnabar-500)}
.adv-ico svg{width:34px;height:34px;display:block;color:var(--bamboo-500)}
/* 五种卡片形态各异 */
.adv-a{background:var(--bamboo-900);color:var(--moon-100)}
.adv-a h3{color:var(--moon-50)}
.adv-a p{color:rgba(247,245,238,.72)}
.adv-a .adv-no{color:var(--cinnabar-400)}
.adv-b{background:var(--moon-50)}
.adv-c{border-top:3px solid var(--cinnabar-500)}
.adv-d{background:rgba(78,124,91,.07);border:1px dashed rgba(78,124,91,.45)}
.adv-e{background:var(--moon-200)}

/* ===== ③ 建站服务快速入口 ===== */
.home-services .section-head{margin-bottom:8px}
.svc-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:34px}
.svc-item{
  display:flex;flex-direction:column;align-items:center;gap:10px;
  padding:20px 10px;background:var(--moon-50);
  border:1px solid var(--line-soft);border-radius:var(--radius);
  text-align:center;font-size:14px;line-height:1.5;color:var(--ink-700);
}
.svc-ico svg{width:26px;height:26px;display:block;color:var(--bamboo-500)}
.svc-item:hover{
  transform:translateY(-4px);box-shadow:var(--shadow-lift);
  color:var(--bamboo-700);border-color:rgba(78,124,91,.35);
}
.services-more{text-align:center;margin-top:38px}

/* ===== ④ 案例精选 ===== */
.home-cases{background:var(--moon-50)}
.case-grid{display:grid;grid-template-columns:1fr;gap:18px;margin-top:40px}
.case-card{
  background:#fff;border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow-soft);display:flex;flex-direction:column;
}
.case-thumb{position:relative;aspect-ratio:3/2;overflow:hidden}
.case-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.case-card:hover img{transform:scale(1.05)}
.case-tag{
  position:absolute;left:12px;top:12px;
  background:rgba(29,52,38,.85);color:var(--moon-100);
  font-size:12.5px;letter-spacing:.08em;padding:4px 12px;border-radius:999px;
}
.case-card h3{font-size:17.5px;margin:16px 18px 6px;line-height:1.5}
.case-card p{font-size:14px;line-height:1.85;color:var(--ink-500);margin:0 18px 20px;flex:1}

/* ===== ⑤ 开发流程速览 ===== */
.home-process{background:var(--moon-200)}
.proc-wrap{position:relative;margin-top:44px}
.proc-curve{display:none}
.proc-row{display:flex;flex-direction:column;gap:16px;position:relative}
.proc-node{
  background:var(--moon-50);border:1px solid var(--line-soft);
  border-radius:var(--radius-lg);padding:22px 22px 20px;
}
.proc-no{
  display:inline-flex;width:44px;height:44px;align-items:center;justify-content:center;
  background:var(--cinnabar-500);color:#FFF3EC;font-family:var(--serif);
  font-size:18px;border-radius:8px;margin-bottom:12px;
  box-shadow:inset 0 0 0 2px rgba(255,243,236,.32);
}
.proc-node h3{font-size:18.5px;margin-bottom:6px}
.proc-node p{font-size:14px;line-height:1.9;color:var(--ink-500)}

/* ===== ⑥ 为什么选择墨白互联 ===== */
.why-wrap{display:grid;gap:36px;align-items:center}
.why-media{position:relative}
.why-media img{
  width:100%;aspect-ratio:3/2;object-fit:cover;
  border-radius:var(--radius-lg);box-shadow:var(--shadow-lift);
}
.why-seal{
  position:absolute;right:18px;bottom:-20px;width:66px;height:66px;
  font-size:20px;box-shadow:0 10px 24px rgba(192,47,43,.3);
}
.why-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:18px 24px;margin:26px 0}
.why-stat strong{font-family:var(--serif);font-size:36px;color:var(--bamboo-700);line-height:1.1}
.why-stat strong em{font-style:normal;font-size:16px;color:var(--cinnabar-500);margin-left:2px}
.why-stat span{display:block;font-size:13.5px;color:var(--ink-500);margin-top:4px}
.why-pledge{margin:6px 0 28px}
.why-pledge li{position:relative;padding-left:26px;margin-bottom:12px;font-size:15px;line-height:1.8}
.why-pledge li::before{
  content:"";position:absolute;left:2px;top:11px;width:9px;height:9px;
  background:var(--cinnabar-500);border-radius:2px;transform:rotate(45deg);
}

/* ===== ⑦ 资讯列表区（CMS 四组同列） ===== */
.home-news-list{display:grid;grid-template-columns:1fr;gap:16px;margin-top:36px}
.home-news-item{
  display:flex;gap:14px;align-items:flex-start;
  background:var(--moon-50);border:1px solid var(--line-soft);
  border-radius:var(--radius);padding:12px;
}
.home-news-thumb{flex-shrink:0}
.home-news-thumb img{width:120px;height:90px;object-fit:cover;border-radius:6px}
.home-news-body{min-width:0}
.home-news-body h4{font-size:15.5px;line-height:1.5}
.home-news-body h4 a:hover{color:var(--cinnabar-500)}
.home-news-body p{
  font-size:13px;line-height:1.75;color:var(--ink-500);
  margin-top:4px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.home-news-body time{display:block;font-size:12.5px;color:var(--ink-400);margin-top:6px}

/* ===== ⑧ 全页 CTA 大区 ===== */
.home-cta{
  position:relative;text-align:center;color:var(--moon-100);
  padding:120px 0 84px;
  background:linear-gradient(165deg,var(--bamboo-700) 0%,var(--bamboo-900) 100%);
}
.cta-arc{position:absolute;top:-1px;left:0;width:100%;height:72px;display:block}
.cta-title{color:var(--moon-50);font-size:clamp(26px,3.6vw,42px);letter-spacing:.05em}
.cta-sub{color:rgba(247,245,238,.68);max-width:620px;margin:16px auto 38px;line-height:2}
.cta-contacts{display:grid;grid-template-columns:1fr;gap:14px}
.cta-block{
  background:rgba(247,245,238,.07);border:1px solid rgba(247,245,238,.16);
  border-radius:var(--radius-lg);padding:24px 16px;text-align:center;
}
.cta-label{display:block;font-size:13px;letter-spacing:.24em;color:rgba(247,245,238,.55);margin-bottom:8px}
.cta-block strong{font-family:var(--serif);font-size:clamp(18px,2.2vw,25px);color:#fff;letter-spacing:.03em}
.cta-block:hover{background:rgba(192,47,43,.28);transform:translateY(-3px)}

/* ===== 移动端抽屉菜单关闭时完全隐藏（避免关闭状态在侧边露出一条） ===== */
@media (max-width:920px){
  .main-nav{
    visibility:hidden;
    transition:transform .4s cubic-bezier(.22,.68,.35,1),visibility 0s linear .4s;
  }
  .main-nav.open{
    visibility:visible;
    transition:transform .4s cubic-bezier(.22,.68,.35,1),visibility 0s;
  }
}

/* ==========================================================================
   响应式：平板 ≥768px
   ========================================================================== */
@media (min-width:768px){
  .svc-grid{grid-template-columns:repeat(3,1fr);gap:14px}
  .case-grid{grid-template-columns:repeat(2,1fr);gap:22px}
  .proc-row{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
  .proc-curve{
    display:block;position:absolute;top:-14px;left:0;width:100%;height:200px;
    pointer-events:none;z-index:0;
  }
  .proc-node{position:relative;z-index:1}
  .why-wrap{grid-template-columns:1fr 1.1fr;gap:48px}
  .home-news-list{grid-template-columns:repeat(2,1fr);gap:18px}
  .cta-contacts{grid-template-columns:repeat(3,1fr);gap:18px}
  .adv-card{padding:32px 30px}
}

/* ==========================================================================
   响应式：桌面 ≥1080px（弧线错排展开）
   ========================================================================== */
@media (min-width:1080px){
  .svc-grid{grid-template-columns:repeat(6,1fr)}
  .case-grid{grid-template-columns:repeat(4,1fr);align-items:start}
  .case-card:nth-child(even){margin-top:34px}
  /* 优势卡沿弧线错排（12 列栅格 + 纵向错落） */
  .adv-grid{grid-template-columns:repeat(12,1fr);gap:22px;align-items:start}
  .adv-curve{display:block;position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:0}
  .adv-card{position:relative;z-index:1}
  .adv-a{grid-column:1/8}
  .adv-b{grid-column:8/13;margin-top:52px}
  .adv-c{grid-column:1/5;margin-top:-28px}
  .adv-d{grid-column:5/9;margin-top:26px}
  .adv-e{grid-column:9/13;margin-top:-8px}
  /* 流程节点沿波浪线上下错落 */
  .proc-node:nth-child(2),.proc-node:nth-child(4){transform:translateY(40px)}
  .proc-node:nth-child(3){transform:translateY(-6px)}
}