/* ============================================================
   hhlsq.com — domain.css 域名注册备案页专属样式
   布局指纹：H10 极简留白 Hero（大留白+居中标题+通栏窄图）｜B3步骤时间轴｜B11表格对比｜B2卡片墙｜B1统计带｜B14表单｜B15 CTA
   签名元素：S4 网格点阵（hero 角落 3×3 小圆点阵）
   ============================================================ */

/* ---------- 1. Hero 极简留白 ---------- */
.dm-hero{ padding:clamp(80px,11vw,130px) 0 clamp(40px,5vw,60px); position:relative; overflow:hidden; }
.dm-hero__head{ text-align:center; max-width:720px; margin:0 auto clamp(40px,5vw,64px); position:relative; }
.dm-hero__title{ font-size:clamp(32px,4.6vw,56px); line-height:1.25; letter-spacing:.02em; margin-bottom:18px; }
.dm-hero__sub{ color:var(--gray-600); font-size:16px; max-width:560px; margin:0 auto; }
.dm-hero__media{ max-width:1100px; margin:0 auto; }
.dm-hero__media img{ width:100%; height:clamp(280px,34vw,420px); object-fit:cover; border-radius:var(--radius-lg); box-shadow:var(--shadow-lg); }
.dm-hero__dots{
  position:absolute; right:6%; top:120px; width:72px; height:72px;
  background-image:radial-gradient(circle,var(--navy-500) 1.6px,transparent 2px);
  background-size:24px 24px; background-repeat:repeat; opacity:.35;
}

/* ---------- 2. B3 步骤时间轴 ---------- */
.dm-step__list{ display:grid; grid-template-columns:repeat(5,1fr); gap:20px; counter-reset:dmstep; }
.dm-step__item{ position:relative; padding:0 6px; }
.dm-step__item::before{
  content:""; position:absolute; top:26px; left:50%; width:100%; height:1px;
  background:var(--gray-300);
}
.dm-step__item:last-child::before{ display:none; }
.dm-step__num{
  display:inline-flex; align-items:center; justify-content:center;
  width:52px; height:52px; border-radius:50%;
  background:#fff; border:2px solid var(--gold); color:var(--gold);
  font-size:16px; font-weight:700; margin-bottom:16px; position:relative; z-index:1;
}
.dm-step__item h3{ font-size:16px; margin-bottom:8px; }
.dm-step__item p{ font-size:13.5px; color:var(--gray-600); line-height:1.75; margin:0; }

/* ---------- 3. B11 表格对比 ---------- */
.dm-table__wrap{ overflow-x:auto; border-radius:var(--radius-lg); box-shadow:var(--shadow-sm); }
.dm-table__grid{ width:100%; border-collapse:collapse; background:#fff; min-width:680px; }
.dm-table__grid th{
  background:var(--navy-900); color:#fff; text-align:left;
  padding:16px 20px; font-size:15px; font-weight:600;
}
.dm-table__grid td{ padding:14px 20px; font-size:14.5px; color:var(--gray-700); border-bottom:1px solid var(--gray-200); }
.dm-table__grid tbody tr:nth-child(odd){ background:var(--gray-50); }
.dm-table__grid tbody tr:hover{ background:var(--blue-soft); }
.dm-table__grid td:first-child{ font-weight:600; color:var(--navy-900); }

/* ---------- 4. B2 错位卡片墙 ---------- */
.dm-feat__grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
.dm-feat__card{
  background:#fff; border:1px solid var(--gray-200); border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm); padding:28px 26px; transition:all .3s ease;
}
.dm-feat__card:hover{ transform:translateY(-6px); box-shadow:var(--shadow-md); }
.dm-feat__card:nth-child(even){ transform:translateY(18px); }
.dm-feat__card:nth-child(even):hover{ transform:translateY(-4px); }
.dm-feat__card svg{ width:32px; height:32px; color:var(--navy-600); stroke-width:1.4; margin-bottom:14px; }
.dm-feat__card:hover svg{ color:var(--gold); }
.dm-feat__card h3{ font-size:17px; margin-bottom:10px; }
.dm-feat__card p{ font-size:14px; color:var(--gray-600); margin:0; line-height:1.75; }

/* ---------- 5. B1 数据统计带 ---------- */
.dm-stats{ background:linear-gradient(135deg,var(--navy-900),var(--navy-800)); }
.dm-stats__grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:20px; text-align:center; }
.dm-stat{ position:relative; padding:8px 0; }
.dm-stat + .dm-stat::before{
  content:""; position:absolute; left:0; top:50%; transform:translateY(-50%);
  width:1px; height:46px; background:rgba(232,238,245,.16);
}
.dm-stat .stat-num{ color:#fff; }
.dm-stat .stat-note{ color:rgba(232,238,245,.66); }

/* ---------- 6. B14 表单 ---------- */
.dm-form__split{ display:grid; grid-template-columns:1fr 1.08fr; gap:48px; align-items:center; }
.dm-form__text{ color:var(--gray-600); font-size:15px; margin-bottom:20px; }
.dm-form__text a{ font-weight:600; color:var(--navy-700); }
.dm-form__points li{ display:flex; align-items:baseline; gap:10px; padding:8px 0; font-size:14.5px; color:var(--gray-700); border-bottom:1px dashed var(--gray-300); }
.dm-form__points li::before{ content:""; width:8px; height:8px; border-radius:50%; background:var(--gold); flex-shrink:0; }
.dm-form__points li:last-child{ border-bottom:none; }
.dm-form__points a{ color:var(--navy-600); font-weight:600; }
.dm-form__more{ margin-top:22px; font-size:13.5px; color:var(--gray-500); }
.dm-form__more a{ color:var(--navy-600); font-weight:600; }

/* ---------- 7. B15 CTA ---------- */
.dm-cta{ padding-bottom:clamp(70px,8vw,110px); }
.dm-cta__banner{
  background:linear-gradient(135deg,var(--navy-800),var(--navy-700) 55%,var(--navy-600));
  border-radius:28px; padding:clamp(44px,5vw,72px) clamp(24px,4vw,56px);
  text-align:center; position:relative; overflow:hidden; box-shadow:var(--shadow-lg);
}
.dm-cta__banner::before{
  content:""; position:absolute; right:-90px; top:-90px; width:280px; height:280px;
  border-radius:50%; border:1px dashed rgba(255,255,255,.22);
}
.dm-cta__banner::after{
  content:""; position:absolute; left:-60px; bottom:-120px; width:220px; height:220px;
  border-radius:50%; border:1px dashed rgba(176,141,74,.4);
}
.dm-cta__inner{ position:relative; z-index:1; }
.dm-cta__title{ color:#fff; font-size:clamp(22px,3vw,32px); margin-bottom:12px; }
.dm-cta__sub{ color:rgba(232,238,245,.78); font-size:15px; margin-bottom:28px; }
.dm-cta__actions{ display:flex; gap:16px; justify-content:center; flex-wrap:wrap; }
.dm-cta__ghost{ border-color:rgba(255,255,255,.5); color:#fff; }
.dm-cta__ghost:hover{ background:#fff; color:var(--navy-700); }

/* ---------- 响应式 ---------- */
@media (max-width: 992px){
  .dm-step__list{ grid-template-columns:repeat(2,1fr); gap:32px; }
  .dm-step__item::before{ display:none; }
  .dm-feat__grid{ grid-template-columns:repeat(2,1fr); }
  .dm-feat__card:nth-child(even){ transform:none; }
  .dm-stats__grid{ grid-template-columns:repeat(2,1fr); }
  .dm-form__split{ grid-template-columns:1fr; }
  .dm-hero__dots{ display:none; }
}
@media (max-width: 640px){
  .dm-step__list{ grid-template-columns:1fr; }
  .dm-feat__grid{ grid-template-columns:1fr; }
  .dm-stats__grid{ grid-template-columns:1fr 1fr; gap:14px; }
}