/* ============================================================
   九南科技商城 · 首页深色科技风样式 v1.0
   作用域：body#index（仅首页，不影响其他页）
   设计：深蓝黑底 + 科技蓝青渐变 + 玻璃拟态 + Bento 网格 + 终端窗口
   替换原 css/index.css（原文件保留作回滚备份，只需把 index.html
   的 stylesheet 引用换回 index.css 即可恢复）
   ============================================================ */

/* ============= 令牌 ============= */
body#index {
  /* —— 深色科技风主令牌（--dk-*） —— */
  --dk-bg: #0B1120;
  --dk-bg-2: #0F172A;
  --dk-surface: #131C2E;
  --dk-surface-2: #1A2540;
  --dk-glass: rgba(255, 255, 255, .04);
  --dk-glass-2: rgba(255, 255, 255, .06);
  --dk-border: rgba(148, 163, 184, .14);
  --dk-border-2: rgba(148, 163, 184, .22);
  --dk-border-hot: rgba(56, 189, 248, .45);
  --dk-text: #F1F5F9;
  --dk-text-2: #CBD5E1;
  --dk-text-3: #94A3B8;
  --dk-text-4: #64748B;
  --dk-accent: #38BDF8;
  --dk-accent-2: #2563EB;
  --dk-accent-3: #22D3EE;
  --dk-grad: linear-gradient(135deg, #2563EB 0%, #38BDF8 100%);
  --dk-grad-text: linear-gradient(118deg, #60A5FA 0%, #38BDF8 48%, #22D3EE 100%);
  --dk-glow: rgba(56, 189, 248, .5);
  --dk-shadow: 0 8px 32px rgba(0, 0, 0, .4);
  --dk-shadow-hot: 0 12px 40px rgba(56, 189, 248, .16);
  --dk-mono: "SF Mono", "JetBrains Mono", "Consolas", "Courier New", monospace;

  /* —— 安全地重映射 site.css 的 --jn-* 次级令牌（不动 --jn-ink/--jn-paper，
         以免破坏 site.css 页脚 background:var(--jn-ink) 的墨黑底）—— */
  --jn-ink-2: #CBD5E1;
  --jn-ink-3: #94A3B8;
  --jn-line: rgba(148, 163, 184, .14);
  --jn-line-strong: rgba(148, 163, 184, .22);
  --jn-red: #38BDF8;
  --jn-red-deep: #2563EB;
  --jn-red-soft: rgba(56, 189, 248, .12);

  background: var(--dk-bg);
  color: var(--dk-text);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}

/* ============= 基底背景层（网格 + 光晕） ============= */
body#index {
  background-image:
    radial-gradient(900px 500px at 50% -8%, rgba(37, 99, 235, .22), transparent 60%),
    radial-gradient(700px 400px at 88% 12%, rgba(56, 189, 248, .14), transparent 55%),
    linear-gradient(180deg, var(--dk-bg) 0%, var(--dk-bg-2) 100%);
  background-attachment: fixed;
}

/* ============= 版心 ============= */
body#index .dk-wrap {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 32px;
  box-sizing: border-box;
}

/* ============= 顶栏（实色深蓝，与主体基底统一；底部蓝青光线呼应科技风） ============= */
body#index .nav-shadow {
  background: linear-gradient(180deg, #101A33 0%, #0B1120 100%) !important;
  border-bottom: 1px solid rgba(56, 189, 248, .22) !important;
  box-shadow: 0 8px 24px rgba(0, 0, 0, .35);
  position: sticky;
  top: 0;
  z-index: 100;
}
body#index .nav-header { background: transparent !important; }
/* logo：原图深色文字在深底不可见 → 隐藏原图，用 CSS 绘制「九」字蓝渐变方标 + 白色字标（与 favicon 呼应，深底完美适配）*/
body#index .nav-icon img { display: none; }
body#index .nav-icon a {
  display: flex !important; align-items: center; gap: 10px; text-decoration: none;
}
body#index .nav-icon a::before {
  content: "九"; display: grid; place-items: center; flex: none;
  width: 36px; height: 36px; border-radius: 9px;
  background: linear-gradient(135deg, #2563EB, #38BDF8);
  color: #fff; font-size: 21px; font-weight: 800; line-height: 1;
  box-shadow: 0 4px 12px rgba(37, 99, 235, .45);
}
body#index .nav-icon a::after {
  content: "九南科技商城"; white-space: nowrap;
  color: #F1F5F9; font-size: 18px; font-weight: 700; letter-spacing: .5px;
}
body#index .nav-search {
  background: rgba(255, 255, 255, .05) !important;
  border-bottom: 1px solid var(--dk-border) !important;
}
body#index .nav-search input,
body#index .nav-search input::placeholder { color: var(--dk-text-3) !important; }
body#index .nav-search-btn { color: var(--dk-text-3) !important; }
body#index .nav-search-btn:hover { color: var(--dk-accent) !important; }
body#index .nav-cart,
body#index .nav-cart-icon,
body#index .nav-cart-text { color: var(--dk-text-2) !important; }
body#index .nav-cart:hover,
body#index .nav-cart:hover * { color: var(--dk-accent) !important; }
body#index .cart-badge {
  background: var(--dk-grad) !important;
  color: #fff !important;
}
body#index .no-login .btn-normal-light {
  background: transparent !important;
  color: var(--dk-text-2) !important;
  border-color: var(--dk-border-2) !important;
}
body#index .no-login .btn-normal-light:hover {
  border-color: var(--dk-accent) !important;
  color: var(--dk-accent) !important;
}
body#index .no-login .btn-normal {
  background: var(--dk-grad) !important;
  color: #fff !important;
  border: none !important;
}
/* 移动端抽屉 */
body#index .m-nav-drawer { background: var(--dk-surface) !important; }
body#index .m-nav-drawer .m-nav-link { color: var(--dk-text-2) !important; }
body#index .nav-toggle span { background: var(--dk-text-2) !important; }

/* ============= 通用组件 ============= */
/* 区块 */
body#index .dk-section { padding: 88px 0; position: relative; }
/* 区块标题 */
body#index .dk-sec-head { margin-bottom: 44px; max-width: 640px; }
body#index .dk-sec-head--center { margin-left: auto; margin-right: auto; text-align: center; }
body#index .dk-sec-head--row {
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: 20px; max-width: none; margin-bottom: 36px;
}
body#index .dk-h2 {
  font-size: 34px; font-weight: 700; line-height: 1.2;
  color: var(--dk-text); margin: 12px 0 0; letter-spacing: -.5px;
}
body#index .dk-sec-sub { margin: 12px 0 0; color: var(--dk-text-3); font-size: 15px; line-height: 1.7; }
body#index .dk-sec-more { text-align: center; margin-top: 40px; }

/* 小标签 eyebrow */
body#index .dk-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font: 600 12px/1 var(--dk-mono); letter-spacing: 2px;
  color: var(--dk-accent); text-transform: uppercase; margin: 0;
  padding: 7px 14px; border-radius: 999px;
  background: rgba(56, 189, 248, .08); border: 1px solid rgba(56, 189, 248, .2);
}
body#index .dk-eyebrow--line {
  background: none; border: none; padding: 0;
}
body#index .dk-eyebrow--line .dk-line {
  width: 28px; height: 1px; background: var(--dk-accent); opacity: .6;
}
body#index .dk-pulse {
  width: 8px; height: 8px; border-radius: 50%; background: var(--dk-accent);
  box-shadow: 0 0 0 0 var(--dk-glow); animation: dk-pulse 2s infinite;
}
@keyframes dk-pulse {
  0% { box-shadow: 0 0 0 0 rgba(56, 189, 248, .6); }
  70% { box-shadow: 0 0 0 10px rgba(56, 189, 248, 0); }
  100% { box-shadow: 0 0 0 0 rgba(56, 189, 248, 0); }
}

/* 按钮 */
body#index .dk-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 50px; padding: 0 26px; border-radius: 12px;
  font-size: 15px; font-weight: 600; cursor: pointer;
  border: 1px solid transparent; text-decoration: none;
  transition: transform .25s ease, box-shadow .25s ease, background .25s ease, border-color .25s ease;
  white-space: nowrap;
}
body#index .dk-btn .dk-arrow { transition: transform .25s ease; }
body#index .dk-btn:hover .dk-arrow { transform: translateX(4px); }
body#index .dk-btn-primary {
  background: var(--dk-grad); color: #fff;
  box-shadow: 0 8px 24px rgba(37, 99, 235, .35);
}
body#index .dk-btn-primary:hover {
  transform: translateY(-2px); box-shadow: 0 12px 32px rgba(56, 189, 248, .4);
}
body#index .dk-btn-ghost {
  background: var(--dk-glass); color: var(--dk-text);
  border-color: var(--dk-border-2); backdrop-filter: blur(8px);
}
body#index .dk-btn-ghost:hover {
  border-color: var(--dk-border-hot); color: var(--dk-accent); transform: translateY(-2px);
}
body#index .dk-btn-light { background: #fff; color: #0B1120; }
body#index .dk-btn-light:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(255, 255, 255, .25); }
body#index .dk-btn-ghost-light {
  background: rgba(255, 255, 255, .1); color: #fff; border-color: rgba(255, 255, 255, .35);
}
body#index .dk-btn-ghost-light:hover { background: rgba(255, 255, 255, .2); transform: translateY(-2px); }

/* 链接箭头 */
body#index .dk-link {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--dk-text-3); font-size: 14px; text-decoration: none;
  transition: color .2s ease;
}
body#index .dk-link span { transition: transform .2s ease; }
body#index .dk-link:hover { color: var(--dk-accent); }
body#index .dk-link:hover span { transform: translateX(3px); }

/* 终端窗口标题栏（通用） */
body#index .dk-term-bar {
  display: flex; align-items: center; gap: 7px;
  padding: 11px 14px;
  background: rgba(0, 0, 0, .28);
  border-bottom: 1px solid var(--dk-border);
}
body#index .dk-term-bar i {
  width: 11px; height: 11px; border-radius: 50%; display: inline-block;
}
body#index .dk-term-bar i:nth-child(1) { background: #ff5f56; }
body#index .dk-term-bar i:nth-child(2) { background: #ffbd2e; }
body#index .dk-term-bar i:nth-child(3) { background: #27c93f; }
body#index .dk-term-bar span {
  margin-left: 8px; font: 12px/1 var(--dk-mono); color: var(--dk-text-4);
}

/* ============= §1 Hero ============= */
body#index .dk-hero {
  position: relative; padding: 96px 0 72px; overflow: hidden;
}
body#index .dk-hero-bg { position: absolute; inset: 0; z-index: 0; pointer-events: none; }
body#index .dk-hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(56, 189, 248, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56, 189, 248, .05) 1px, transparent 1px);
  background-size: 52px 52px;
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 30%, transparent 75%);
  mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 30%, transparent 75%);
}
body#index .dk-hero-glow {
  position: absolute; top: -180px; left: 50%; transform: translateX(-50%);
  width: 900px; height: 600px;
  background: radial-gradient(circle, rgba(37, 99, 235, .25), transparent 65%);
  filter: blur(20px);
}
body#index .dk-hero-orb {
  position: absolute; border-radius: 50%; filter: blur(60px); opacity: .5;
}
body#index .dk-hero-orb--1 {
  width: 320px; height: 320px; top: 12%; left: -60px;
  background: radial-gradient(circle, rgba(37, 99, 235, .5), transparent 70%);
  animation: dk-float 9s ease-in-out infinite;
}
body#index .dk-hero-orb--2 {
  width: 260px; height: 260px; bottom: 6%; right: -40px;
  background: radial-gradient(circle, rgba(34, 211, 238, .4), transparent 70%);
  animation: dk-float 11s ease-in-out infinite reverse;
}
@keyframes dk-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-26px); }
}
body#index .dk-hero-inner {
  position: relative; z-index: 2; text-align: center;
  max-width: 880px; margin: 0 auto;
}
body#index .dk-hero-title {
  font-size: clamp(38px, 6vw, 68px); font-weight: 800; line-height: 1.12;
  color: var(--dk-text); margin: 26px 0 0; letter-spacing: -1.5px;
}
body#index .dk-hero-title em {
  font-style: normal; display: inline-block;
  background: var(--dk-grad-text); -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
body#index .dk-hero-sub {
  margin: 24px auto 0; max-width: 600px;
  font-size: 17px; line-height: 1.75; color: var(--dk-text-3);
}
body#index .dk-hero-cta {
  margin-top: 36px; display: flex; gap: 14px; justify-content: center; flex-wrap: wrap;
}
body#index .dk-hero-stats {
  margin-top: 56px; display: flex; gap: 16px; justify-content: center; flex-wrap: wrap;
}
body#index .dk-stat {
  min-width: 150px; padding: 22px 24px; border-radius: 16px;
  background: var(--dk-glass); border: 1px solid var(--dk-border);
  backdrop-filter: blur(10px);
}
body#index .dk-stat b {
  display: block; font-size: 30px; font-weight: 800; line-height: 1;
  background: var(--dk-grad-text); -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
body#index .dk-stat b sup { font-size: .55em; font-weight: 700; }
body#index .dk-stat span { display: block; margin-top: 8px; font-size: 13px; color: var(--dk-text-3); }

/* Hero 终端窗口：原绝对定位(340px)在中等宽度侵入并遮挡数据卡/按钮 → 隐藏，hero 纯净居中 */
body#index .dk-terminal { display: none; }
body#index .dk-term-body {
  margin: 0; padding: 18px 18px 20px; font: 13px/1.85 var(--dk-mono);
  color: var(--dk-text-2); text-align: left;
}
body#index .dk-term-body em { font-style: normal; color: var(--dk-accent); }
body#index .dk-t-blue { color: #60A5FA; }
body#index .dk-t-dim { color: var(--dk-text-4); }
body#index .dk-t-cursor { color: var(--dk-accent); animation: dk-blink 1s step-end infinite; }
@keyframes dk-blink { 50% { opacity: 0; } }

/* ============= §2 能力特性胶囊条 ============= */
body#index .dk-feats { padding: 0; margin-top: -28px; position: relative; z-index: 5; }
body#index .dk-feats-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
}
body#index .dk-feat {
  display: flex; align-items: center; gap: 14px;
  padding: 20px 22px; border-radius: 16px;
  background: var(--dk-glass); border: 1px solid var(--dk-border);
  backdrop-filter: blur(10px); transition: border-color .25s ease, transform .25s ease;
}
body#index .dk-feat:hover { border-color: var(--dk-border-hot); transform: translateY(-3px); }
body#index .dk-feat-ic {
  flex: none; width: 42px; height: 42px; border-radius: 12px;
  display: grid; place-items: center; color: var(--dk-accent);
  background: rgba(56, 189, 248, .1); border: 1px solid rgba(56, 189, 248, .2);
}
body#index .dk-feat-ic svg { width: 22px; height: 22px; }
body#index .dk-feat-txt { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
body#index .dk-feat-txt b { font-size: 15px; font-weight: 600; color: var(--dk-text); }
body#index .dk-feat-txt i { font-style: normal; font-size: 12.5px; color: var(--dk-text-3); }

/* ============= §3 服务分类 Bento + 终端窗口 ============= */
body#index .dk-catalog {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px;
}
body#index .dk-cat {
  position: relative; display: flex; flex-direction: column;
  border-radius: 18px; overflow: hidden; text-decoration: none;
  background: linear-gradient(160deg, rgba(30, 44, 78, .72) 0%, rgba(16, 26, 51, .88) 100%);
  border: 1px solid rgba(148, 163, 184, .22);
  box-shadow: 0 6px 24px rgba(0, 0, 0, .3);
  transition: transform .35s cubic-bezier(.2, .7, .3, 1), border-color .35s ease, box-shadow .35s ease;
}
body#index .dk-cat::before {
  content: ""; position: absolute; inset: 0; border-radius: 18px; padding: 1px;
  background: linear-gradient(135deg, transparent, rgba(56, 189, 248, .35), transparent);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: 0; transition: opacity .3s ease; pointer-events: none;
}
body#index .dk-cat:hover {
  transform: translateY(-6px);
  border-color: rgba(56, 189, 248, .55);
  box-shadow: 0 18px 46px rgba(56, 189, 248, .22), 0 8px 24px rgba(0, 0, 0, .4);
}
body#index .dk-cat:hover::before { opacity: 1; }
body#index .dk-cat--xl {
  grid-column: 1 / 3; grid-row: 1 / 3;
  background:
    linear-gradient(135deg, rgba(19, 28, 46, .94) 0%, rgba(11, 17, 32, .97) 100%),
    url("/web/default/assets/img/index/home2026/cat-design.jpg") center/cover;
}
body#index .dk-cat-no {
  margin-left: auto; font: 700 13px/1 var(--dk-mono); color: var(--dk-accent);
  letter-spacing: 1px;
}
body#index .dk-cat-body {
  padding: 22px 24px; display: flex; flex-direction: column; gap: 9px; flex: 1;
}
body#index .dk-cat--xl .dk-cat-body { padding: 32px 36px; gap: 14px; }
body#index .dk-cat-en {
  font: 600 11px/1 var(--dk-mono); letter-spacing: 2px; color: var(--dk-accent);
  text-transform: uppercase;
}
body#index .dk-cat-name {
  font-size: 19px; font-weight: 700; color: var(--dk-text); margin: 0;
}
body#index .dk-cat--xl .dk-cat-name { font-size: 28px; }
body#index .dk-cat-desc { font-size: 13.5px; line-height: 1.65; color: var(--dk-text-3); margin: 0; }
body#index .dk-cat--xl .dk-cat-desc { font-size: 15px; max-width: 420px; }
body#index .dk-cat-foot {
  margin-top: auto; padding-top: 16px; display: flex; align-items: center;
  justify-content: space-between; gap: 12px; border-top: 1px solid var(--dk-border);
}
body#index .dk-cat--xl .dk-cat-foot { padding-top: 20px; }
body#index .dk-cat-foot .jn-cat-count {
  font-size: 13px; color: var(--dk-text-3);
}
body#index .dk-cat-foot .jn-cat-count b {
  color: var(--dk-text); font-weight: 700; font-size: 15px;
}
body#index .dk-cat-price { font-size: 13px; color: var(--dk-text-3); }
body#index .dk-cat-price b {
  font-size: 17px; font-weight: 800;
  background: var(--dk-grad-text); -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
body#index .dk-cat-cta {
  display: inline-flex; align-items: center; gap: 6px; margin-top: 14px;
  font-size: 14px; font-weight: 600; color: var(--dk-accent);
}
body#index .dk-cat-glow {
  position: absolute; right: -40px; bottom: -40px; width: 180px; height: 180px;
  background: radial-gradient(circle, var(--dk-glow), transparent 70%);
  filter: blur(20px); opacity: 0; transition: opacity .4s ease; pointer-events: none;
}
body#index .dk-cat:hover .dk-cat-glow { opacity: .6; }

/* ============= §4 精选服务 Swiper ============= */
body#index .dk-swiper-nav { display: flex; align-items: center; gap: 10px; }
body#index .dk-swiper-btn {
  width: 42px; height: 42px; border-radius: 50%; cursor: pointer;
  background: var(--dk-glass); border: 1px solid var(--dk-border-2);
  color: var(--dk-text-2); font-size: 20px; line-height: 1;
  display: grid; place-items: center; transition: all .25s ease;
}
body#index .dk-swiper-btn:hover {
  border-color: var(--dk-border-hot); color: var(--dk-accent); background: rgba(56, 189, 248, .08);
}
body#index .dk-swiper-btn.swiper-button-disabled { opacity: .35; cursor: not-allowed; }
body#index .dk-swiper { padding: 4px 2px 14px; overflow: visible; }
body#index .dk-swiper .swiper-wrapper { align-items: stretch; }
/* 精选卡（由 index.js 渲染） */
body#index .dk-pick {
  height: auto; display: flex; flex-direction: column;
  background: var(--dk-surface); border: 1px solid var(--dk-border);
  border-radius: 16px; overflow: hidden; text-decoration: none;
  transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
}
body#index .dk-pick:hover { transform: translateY(-5px); border-color: var(--dk-border-hot); box-shadow: var(--dk-shadow-hot); }
body#index .dk-pick-photo { position: relative; aspect-ratio: 16 / 10; overflow: hidden; background: var(--dk-surface-2); }
body#index .dk-pick-photo img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
body#index .dk-pick:hover .dk-pick-photo img { transform: scale(1.06); }
body#index .dk-pick-tag {
  position: absolute; top: 12px; left: 12px; padding: 4px 10px; border-radius: 999px;
  font-size: 11px; font-weight: 600; color: var(--dk-accent);
  background: rgba(11, 17, 32, .7); border: 1px solid rgba(56, 189, 248, .25);
  backdrop-filter: blur(6px);
}
body#index .dk-pick-info { padding: 18px 20px 20px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
body#index .dk-pick-name {
  font-size: 16px; font-weight: 600; color: var(--dk-text); margin: 0;
  display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden;
}
body#index .dk-pick-brief {
  font-size: 13px; line-height: 1.6; color: var(--dk-text-3); margin: 0;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
body#index .dk-pick-foot {
  margin-top: auto; padding-top: 14px; display: flex; align-items: center;
  justify-content: space-between; gap: 10px; border-top: 1px solid var(--dk-border);
}
body#index .dk-price { font-size: 13px; color: var(--dk-text-3); }
body#index .dk-price b {
  font-size: 20px; font-weight: 800;
  background: var(--dk-grad-text); -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
body#index .dk-pick-add {
  flex: none; height: 36px; padding: 0 14px; border-radius: 10px; cursor: pointer;
  font-size: 13px; font-weight: 600; color: #fff; border: none;
  background: var(--dk-grad); transition: transform .2s ease, box-shadow .2s ease;
}
body#index .dk-pick-add:hover { transform: translateY(-1px); box-shadow: 0 6px 16px rgba(56, 189, 248, .35); }

/* ============= §5 服务流程时间线 ============= */
body#index .dk-flow {
  position: relative; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
}
body#index .dk-flow-line {
  position: absolute; top: 22px; left: 12.5%; right: 12.5%; height: 2px;
  background: linear-gradient(90deg, transparent, rgba(56, 189, 248, .4), rgba(56, 189, 248, .4), transparent);
}
body#index .dk-flow-step {
  position: relative; text-align: center; padding: 0 8px;
}
body#index .dk-flow-no {
  display: inline-grid; place-items: center; width: 44px; height: 44px; margin: 0 auto 18px;
  border-radius: 50%; font: 700 14px/1 var(--dk-mono); color: var(--dk-accent);
  background: var(--dk-bg); border: 1px solid var(--dk-border-hot);
  box-shadow: 0 0 0 6px rgba(11, 17, 32, 1), 0 0 20px rgba(56, 189, 248, .25);
  position: relative; z-index: 2;
}
body#index .dk-flow-ic {
  width: 52px; height: 52px; margin: 0 auto 16px; border-radius: 14px;
  display: grid; place-items: center; color: var(--dk-accent);
  background: var(--dk-glass); border: 1px solid var(--dk-border);
}
body#index .dk-flow-ic svg { width: 26px; height: 26px; }
body#index .dk-flow-title { font-size: 17px; font-weight: 700; color: var(--dk-text); margin: 0 0 8px; }
body#index .dk-flow-desc { font-size: 13.5px; line-height: 1.65; color: var(--dk-text-3); margin: 0; }

/* ============= §6 数据信任墙 ============= */
body#index .dk-trust-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px;
}
body#index .dk-trust-card {
  padding: 36px 24px; border-radius: 18px; text-align: center;
  background: var(--dk-glass); border: 1px solid var(--dk-border);
  backdrop-filter: blur(10px); transition: border-color .3s ease, transform .3s ease;
}
body#index .dk-trust-card:hover { border-color: var(--dk-border-hot); transform: translateY(-4px); }
body#index .dk-trust-card b {
  display: block; font-size: 46px; font-weight: 800; line-height: 1;
  background: var(--dk-grad-text); -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
body#index .dk-trust-card b sup { font-size: .5em; font-weight: 700; }
body#index .dk-trust-card span { display: block; margin-top: 12px; font-size: 14px; color: var(--dk-text-3); }
body#index .dk-trust-more { text-align: center; margin-top: 44px; }

/* ============= §7 优选服务推荐 ============= */
body#index .dk-sale {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px;
}
body#index .dk-sale-card {
  display: flex; flex-direction: column; border-radius: 16px; overflow: hidden;
  text-decoration: none; background: var(--dk-surface); border: 1px solid var(--dk-border);
  transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
}
body#index .dk-sale-card:hover { transform: translateY(-5px); border-color: var(--dk-border-hot); box-shadow: var(--dk-shadow-hot); }
body#index .dk-sale-card img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; background: var(--dk-surface-2); }
body#index .dk-sale-info { padding: 16px 18px 18px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
body#index .dk-sale-name {
  font-size: 14.5px; font-weight: 600; color: var(--dk-text); margin: 0;
  display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden;
}
body#index .dk-sale-card .dk-price b { font-size: 18px; }
body#index .dk-sale-btn {
  margin-top: 4px; font-size: 13px; font-weight: 600; color: var(--dk-accent);
}

/* ============= §8 资讯动态 ============= */
body#index .dk-journal {
  display: grid; grid-template-columns: 1fr 1fr; gap: 22px;
}
body#index .dk-j-col {
  padding: 26px 28px; border-radius: 18px;
  background: var(--dk-glass); border: 1px solid var(--dk-border);
  backdrop-filter: blur(10px);
}
body#index .dk-j-head {
  display: flex; align-items: center; justify-content: space-between;
  padding-bottom: 16px; margin-bottom: 6px; border-bottom: 1px solid var(--dk-border);
}
body#index .dk-j-head h3 { font-size: 17px; font-weight: 700; color: var(--dk-text); margin: 0; }
body#index .dk-j-list { display: flex; flex-direction: column; }
body#index .dk-j-row {
  display: flex; align-items: center; justify-content: space-between; gap: 14px;
  padding: 14px 0; border-bottom: 1px solid var(--dk-border);
  text-decoration: none; transition: padding .2s ease;
}
body#index .dk-j-row:last-child { border-bottom: none; }
body#index .dk-j-row:hover { padding-left: 6px; }
body#index .dk-j-row-title {
  font-size: 14px; color: var(--dk-text-2); flex: 1; min-width: 0;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; transition: color .2s ease;
}
body#index .dk-j-row:hover .dk-j-row-title { color: var(--dk-accent); }
body#index .dk-j-row-date { flex: none; font: 12px/1 var(--dk-mono); color: var(--dk-text-4); }

/* 占位（沿用 index.js 的 .jn-empty / .jn-j-empty） */
body#index .jn-empty,
body#index .jn-j-empty {
  padding: 32px 0; text-align: center; color: var(--dk-text-4); font-size: 14px;
}

/* ============= §9 渐变 CTA 收尾 ============= */
body#index .dk-cta-section {
  padding: 72px 0 96px;
}
body#index .dk-cta-inner {
  position: relative; overflow: hidden; text-align: center;
  padding: 64px 32px; border-radius: 28px;
  background:
    radial-gradient(600px 300px at 50% 0%, rgba(56, 189, 248, .25), transparent 70%),
    linear-gradient(135deg, rgba(37, 99, 235, .9) 0%, rgba(56, 189, 248, .85) 100%);
  border: 1px solid rgba(255, 255, 255, .18);
  box-shadow: 0 20px 60px rgba(37, 99, 235, .35);
}
body#index .dk-cta-inner::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .08) 1px, transparent 1px);
  background-size: 36px 36px; -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 0%, #000, transparent 70%);
  mask-image: radial-gradient(ellipse 70% 60% at 50% 0%, #000, transparent 70%);
  pointer-events: none;
}
body#index .dk-cta-kicker {
  position: relative; font: 600 12px/1 var(--dk-mono); letter-spacing: 2px;
  color: rgba(255, 255, 255, .8); margin: 0;
}
body#index .dk-cta-title {
  position: relative; font-size: clamp(26px, 4vw, 38px); font-weight: 800;
  color: #fff; margin: 16px 0 0; letter-spacing: -.5px;
}
body#index .dk-cta-sub {
  position: relative; margin: 14px auto 0; max-width: 520px;
  font-size: 15px; line-height: 1.7; color: rgba(255, 255, 255, .9);
}
body#index .dk-cta-btns {
  position: relative; margin-top: 30px; display: flex; gap: 14px; justify-content: center; flex-wrap: wrap;
}

/* ============= 页脚衔接（让墨黑页脚与深色主体过渡，顶部加蓝光带） ============= */
body#index .site-footer {
  border-top: 1px solid var(--dk-border) !important;
  background: linear-gradient(180deg, #070B14 0%, #050810 100%) !important;
  position: relative;
}
body#index .site-footer::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(56, 189, 248, .5), transparent);
}

/* ============= 高级感增强：滚动进度条 / hover 光效 / stagger 渐入 ============= */
body#index .dk-scroll-progress {
  position: fixed; top: 0; left: 0; height: 3px; width: 0;
  background: linear-gradient(90deg, #2563EB, #38BDF8, #22D3EE);
  z-index: 200; box-shadow: 0 0 12px rgba(56, 189, 248, .7);
  transition: width .1s linear; pointer-events: none;
}
body#index .dk-stat { transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease; }
body#index .dk-stat:hover {
  transform: translateY(-4px); border-color: rgba(56, 189, 248, .4);
  box-shadow: 0 12px 30px rgba(56, 189, 248, .16);
}
body#index .dk-feat { transition: border-color .25s ease, transform .25s ease, box-shadow .25s ease; }
body#index .dk-feat:hover { box-shadow: 0 10px 26px rgba(56, 189, 248, .14); }
body#index .dk-trust-grid .dk-trust-card:nth-child(2) { transition-delay: .12s; }
body#index .dk-trust-grid .dk-trust-card:nth-child(3) { transition-delay: .24s; }
body#index .dk-trust-grid .dk-trust-card:nth-child(4) { transition-delay: .36s; }
body#index .dk-feats-grid .dk-feat:nth-child(2) { transition-delay: .08s; }
body#index .dk-feats-grid .dk-feat:nth-child(3) { transition-delay: .16s; }
body#index .dk-feats-grid .dk-feat:nth-child(4) { transition-delay: .24s; }

/* ============= 响应式 ============= */
@media (max-width: 1100px) {
  body#index .dk-terminal { display: none; }
  body#index .dk-feats-grid { grid-template-columns: repeat(2, 1fr); }
  body#index .dk-sale { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 920px) {
  body#index .dk-section { padding: 64px 0; }
  body#index .dk-hero { padding: 72px 0 56px; }
  /* Bento 退化为 2 列，大卡跨满 */
  body#index .dk-catalog { grid-template-columns: repeat(2, 1fr); }
  body#index .dk-cat--xl { grid-column: 1 / 3; grid-row: auto; }
  body#index .dk-flow { grid-template-columns: repeat(2, 1fr); gap: 32px 20px; }
  body#index .dk-flow-line { display: none; }
  body#index .dk-trust-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 680px) {
  body#index .dk-wrap { padding: 0 18px; }
  body#index .dk-h2 { font-size: 26px; }
  body#index .dk-sec-head { margin-bottom: 32px; }
  body#index .dk-sec-head--row { flex-direction: column; align-items: flex-start; gap: 16px; }
  body#index .dk-hero-cta { flex-direction: column; align-items: stretch; }
  body#index .dk-btn { width: 100%; }
  body#index .dk-feats-grid { grid-template-columns: 1fr; }
  body#index .dk-feats { margin-top: -20px; }
  body#index .dk-catalog { grid-template-columns: 1fr; }
  body#index .dk-cat--xl { grid-column: auto; }
  body#index .dk-cat--xl .dk-cat-body { padding: 24px 22px; }
  body#index .dk-cat--xl .dk-cat-name { font-size: 22px; }
  body#index .dk-flow { grid-template-columns: 1fr; }
  body#index .dk-trust-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  body#index .dk-trust-card { padding: 26px 16px; }
  body#index .dk-trust-card b { font-size: 36px; }
  body#index .dk-sale { grid-template-columns: 1fr; }
  body#index .dk-journal { grid-template-columns: 1fr; }
  body#index .dk-cta-inner { padding: 44px 20px; border-radius: 20px; }
  body#index .dk-hero-stats { gap: 10px; }
  body#index .dk-stat { min-width: 0; flex: 1; padding: 16px 12px; }
  body#index .dk-stat b { font-size: 24px; }
}
@media (prefers-reduced-motion: reduce) {
  body#index .dk-hero-orb,
  body#index .dk-pulse,
  body#index .dk-t-cursor { animation: none; }
}