/* ============================================
   wgaat.com — 首页（深色科技风 · 终端美学）
   仅 index.html 引用；用 body.home 作用域隔离，
   不影响 products / simulator / about 等浅色子页面。
   ============================================ */

body.home {
  background: var(--m-bg);
  color: var(--m-text);
  /* 细网格底纹：制造"仪表盘/靶场"的空间感，不依赖图片 */
  background-image:
    linear-gradient(rgba(56, 189, 248, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56, 189, 248, .045) 1px, transparent 1px);
  background-size: 48px 48px, 48px 48px;
}

body.home .header {
  background: rgba(7, 12, 22, .82);
  border-bottom: 1px solid var(--m-border);
  backdrop-filter: blur(12px);
}
body.home .logo,
body.home .logo-text { color: var(--m-text); }
body.home .logo-text { color: var(--m-cyan); }
body.home .nav a { color: var(--m-muted); }
body.home .nav a:hover,
body.home .nav a.active { color: var(--m-text); }
body.home .mobile-menu-btn { color: var(--m-text); }
body.home .nav.open {
  background: var(--m-bg-2);
  border-bottom: 1px solid var(--m-border);
}
body.home .nav .nav-cta {
  color: #04121a; background: var(--m-cyan);
  padding: 7px 14px; border-radius: 8px; font-weight: 700;
}
body.home .nav .nav-cta:hover { color: #04121a; filter: brightness(1.08); }

/* ── 通用容器与节奏 ── */
body.home .container { max-width: 1180px; }
.m-section { padding: 96px 0; position: relative; }
.m-section-tight { padding: 72px 0; }
/* 等宽小标题样式已抽到 theme.css，供全站共用 */
.m-h2 {
  font-size: clamp(26px, 3.2vw, 38px);
  line-height: 1.2; letter-spacing: -.02em; font-weight: 800;
  margin: 0 0 14px;
}
.m-lead { color: var(--m-muted); font-size: 16px; line-height: 1.8; margin: 0 0 40px; max-width: 62ch; }
.m-center { text-align: center; }
.m-center .m-lead { margin-left: auto; margin-right: auto; }

/* ── Hero ── */
.m-hero { padding: 88px 0 72px; position: relative; overflow: hidden; }
.m-hero::before {
  content: ""; position: absolute; inset: -20% 30% auto -20%; height: 620px;
  background: radial-gradient(closest-side, rgba(34, 211, 238, .16), transparent 70%);
  pointer-events: none;
}
/* 首屏底部：赛道光带。
   跑车线稿只当纹理用 —— PNG 的 alpha 作 mask、填充站点青，
   不引入第二套薄荷绿；低透明度 + 右下裁切，避免抢文案与终端。 */
.m-hero::after {
  content: ""; position: absolute; right: -4%; bottom: -14px; z-index: 0;
  width: min(820px, 64vw); aspect-ratio: 962 / 305;
  background: var(--m-cyan);
  -webkit-mask: url("/img/car-neon.png") center / contain no-repeat;
          mask: url("/img/car-neon.png") center / contain no-repeat;
  opacity: .15; pointer-events: none;
}
/* 无 mask 能力的环境直接不显示，避免出现一块实心青色矩形 */
@supports not (mask: url("/img/car-neon.png")) {
  .m-hero::after { display: none; }
}
.m-hero .container {
  position: relative; z-index: 1; display: grid; grid-template-columns: 1.02fr .98fr;
  gap: 56px; align-items: center;
}
@media (max-width: 900px) { .m-hero::after { display: none; } }
/* 终端内是 nowrap 报文行，必须允许网格项收缩，否则移动端整页横向溢出 */
.m-hero .container > *,
.m-2col > * { min-width: 0; }
.m-hero h1 {
  font-size: clamp(38px, 5.2vw, 62px);
  line-height: 1.05; letter-spacing: -.03em; font-weight: 800;
  margin: 0 0 18px;
}
.m-hero h1 .hl { color: var(--m-cyan); }
.m-hero h1 .sub {
  display: block; font-size: clamp(20px, 2.4vw, 30px);
  font-weight: 600; letter-spacing: -.01em; color: var(--m-text); margin-top: 12px;
}
.m-hero-lead {
  font-size: 17px; line-height: 1.8; color: var(--m-muted);
  margin: 0 0 30px; max-width: 30em;
}
.m-hero-lead strong { color: var(--m-text); font-weight: 600; }
.m-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.m-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 26px; border-radius: 10px; font-size: 15px; font-weight: 700;
  text-decoration: none; border: 1px solid transparent; cursor: pointer;
  transition: transform .18s, box-shadow .18s, background .18s, border-color .18s;
  white-space: nowrap;
}
.m-btn-primary {
  background: var(--m-cyan); color: #04121a;
  box-shadow: 0 10px 26px rgba(34, 211, 238, .22);
}
.m-btn-primary:hover { transform: translateY(-1px); box-shadow: 0 14px 34px rgba(34, 211, 238, .3); }
.m-btn-ghost { border-color: var(--m-border-hi); color: var(--m-text); background: rgba(255, 255, 255, .02); }
.m-btn-ghost:hover { border-color: var(--m-cyan); color: var(--m-cyan); }
.m-btn-sm { padding: 10px 18px; font-size: 14px; }

.m-proof {
  display: flex; flex-wrap: wrap; gap: 10px 18px; margin-top: 26px;
  color: var(--m-muted); font-size: 13px;
}
.m-proof span { display: inline-flex; align-items: center; gap: 7px; }
.m-proof span::before {
  content: ""; width: 5px; height: 5px; border-radius: 50%;
  background: var(--m-green); box-shadow: 0 0 8px rgba(52, 211, 153, .7);
}

/* 终端窗口与认证徽章条样式已抽到 theme.css，供全站共用 */

/* ── 产品矩阵 ── */
.m-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.m-card {
  position: relative; background: var(--m-card); border: 1px solid var(--m-border);
  border-radius: 14px; padding: 28px 26px; text-align: left;
  display: flex; flex-direction: column;
  transition: transform .2s, border-color .2s, box-shadow .2s;
}
.m-card:hover {
  transform: translateY(-3px); border-color: var(--m-border-hi);
  box-shadow: 0 18px 40px rgba(0, 0, 0, .35);
}
.m-card .num {
  font: 700 12px/1 var(--m-mono); letter-spacing: .1em; color: #4d6180;
}
.m-card h3 { font-size: 19px; margin: 14px 0 10px; letter-spacing: -.01em; }
.m-card p { color: var(--m-muted); font-size: 14px; line-height: 1.75; margin: 0; }
.m-card ul { margin: 14px 0 0; padding: 0; list-style: none; }
.m-card li {
  color: #a9b8cf; font-size: 13px; padding: 4px 0 4px 16px; position: relative;
}
.m-card li::before {
  content: ""; position: absolute; left: 0; top: 11px;
  width: 5px; height: 5px; border-radius: 1px; background: var(--m-cyan); opacity: .8;
}
.m-card .link {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: auto; padding-top: 18px;
  color: var(--m-cyan); font-size: 13px; font-weight: 600; text-decoration: none;
}
.m-card .link:hover { text-decoration: underline; }
.m-card-lead {
  border-color: rgba(34, 211, 238, .45);
  background: linear-gradient(180deg, rgba(34, 211, 238, .08), rgba(15, 24, 41, .9) 46%);
  box-shadow: 0 0 0 1px rgba(34, 211, 238, .12), 0 20px 50px rgba(0, 0, 0, .4);
}
.m-flag {
  position: absolute; top: 18px; right: 18px;
  font: 700 10px/1 var(--m-mono); letter-spacing: .1em;
  color: #04121a; background: var(--m-cyan); padding: 5px 8px; border-radius: 5px;
}

/* ── 深色技术区块 ── */
.m-technical {
  background: linear-gradient(180deg, #060b14, #0a1322 60%, #070c16);
  border-top: 1px solid var(--m-border); border-bottom: 1px solid var(--m-border);
}
.m-2col { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.m-spec { display: grid; gap: 16px; margin-top: 28px; }
.m-spec-item { display: flex; gap: 14px; align-items: flex-start; }
.m-spec-item .k {
  flex: 0 0 34px; height: 34px; border-radius: 8px;
  display: grid; place-items: center;
  border: 1px solid var(--m-border); color: var(--m-cyan);
  font: 700 12px/1 var(--m-mono); background: rgba(34, 211, 238, .05);
}
.m-spec-item h4 { margin: 2px 0 4px; font-size: 15px; }
.m-spec-item p { margin: 0; color: var(--m-muted); font-size: 13.5px; line-height: 1.7; }

/* ── 换电 ── */
.m-grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.m-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 28px; }
.m-step {
  border: 1px solid var(--m-border); border-radius: 12px; padding: 22px;
  background: rgba(15, 24, 41, .5);
}
.m-step .n {
  font: 800 26px/1 var(--m-mono); color: rgba(34, 211, 238, .35);
}
.m-step h4 { margin: 12px 0 6px; font-size: 16px; }
.m-step p { margin: 0; color: var(--m-muted); font-size: 13.5px; line-height: 1.7; }

/* ── DX 漏斗 ── */
.m-funnel { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.m-funnel .m-step { background: linear-gradient(180deg, rgba(34, 211, 238, .06), rgba(15, 24, 41, .7)); }

/* ── CTA 收尾 ── */
.m-cta {
  border: 1px solid rgba(34, 211, 238, .3); border-radius: 18px;
  padding: 48px; text-align: center;
  background: radial-gradient(120% 140% at 50% 0%, rgba(34, 211, 238, .13), rgba(15, 24, 41, .9) 55%);
}
.m-cta h2 { font-size: clamp(24px, 3vw, 34px); margin: 0 0 12px; letter-spacing: -.02em; }
.m-cta p { color: var(--m-muted); margin: 0 0 26px; }

/* ── 页脚 ── */
body.home .footer {
  background: #060b14; border-top: 1px solid var(--m-border);
  color: var(--m-muted); padding: 56px 0 28px;
}
body.home .footer h4 { color: var(--m-text); font-size: 14px; margin-bottom: 14px; }
body.home .footer a { color: var(--m-muted); }
body.home .footer a:hover { color: var(--m-cyan); }
@media (min-width: 769px) {
  body.home .footer-grid { grid-template-columns: 2fr 1fr 1fr 1.2fr; }
}
body.home .footer-bottom {
  border-top: 1px solid var(--m-border); margin-top: 36px; padding-top: 20px;
  font-size: 12.5px; color: #5d7391;
}

/* ── 进入视口淡入（由 index.html 底部 12 行脚本驱动） ── */
.m-reveal { opacity: 0; transform: translateY(14px); transition: opacity .5s, transform .5s; }
.m-reveal.in { opacity: 1; transform: none; }

/* ── 首屏 CTA 下方的一句降低门槛的说明 ── */
.m-hero-note {
  margin: 14px 0 0;
  font-size: 12.5px; line-height: 1.7; color: #5d7391;
}

/* ── 传统联调 vs 靶场 对比表 ── */
.m-compare {
  margin-top: 38px;
  border: 1px solid var(--m-border); border-radius: 14px; overflow: hidden;
  background: rgba(11, 18, 32, .6);
}
.m-compare-head {
  display: grid; grid-template-columns: 112px 1fr 1fr; gap: 18px;
  padding: 13px 20px;
  background: rgba(34, 211, 238, .05);
  border-bottom: 1px solid var(--m-border);
  font: 600 11.5px/1 var(--m-mono); letter-spacing: .1em; color: #7f93b0;
}
.m-compare-head span:nth-child(3) { color: var(--m-cyan); }
.m-compare-row {
  display: grid; grid-template-columns: 112px 1fr 1fr; gap: 18px;
  padding: 16px 20px; align-items: center;
  border-bottom: 1px solid rgba(23, 36, 58, .7);
}
.m-compare-row:last-child { border-bottom: 0; }
.m-compare-row b {
  font-size: 12.5px; font-weight: 600; color: #7f93b0; letter-spacing: .04em;
}
.m-compare-row span { font-size: 13.5px; line-height: 1.65; color: #93a5bf; }
.m-compare-row .win {
  position: relative; padding-left: 20px;
  color: #e6edf7; font-weight: 600;
}
.m-compare-row .win::before {
  content: "✓"; position: absolute; left: 0; top: 0; color: #34d399; font-weight: 700;
}

/* ── 协议能力矩阵 ── */
.m-matrix {
  margin-top: 38px;
  border: 1px solid var(--m-border); border-radius: 14px; overflow: hidden;
  background: rgba(11, 18, 32, .6);
}
.m-matrix-head {
  display: grid; grid-template-columns: 196px 128px 1.25fr 1fr; gap: 20px;
  padding: 13px 22px;
  background: rgba(34, 211, 238, .05);
  border-bottom: 1px solid var(--m-border);
  font: 600 11.5px/1 var(--m-mono); letter-spacing: .1em; color: #7f93b0;
}
.m-matrix-head span:nth-child(3) { color: var(--m-cyan); }
.m-matrix-row {
  position: relative;
  display: grid; grid-template-columns: 196px 128px 1.25fr 1fr; gap: 20px;
  padding: 17px 22px; align-items: center;
  border-bottom: 1px solid rgba(23, 36, 58, .7);
  transition: background .2s;
}
/* 行内报文水印：只贴真实报文（已生产 / 已编码的协议），规划中的行不给，
   避免「有代码=已支持」的误读。透明度 .22，仅作纹理。 */
.m-matrix-row[data-code]::after {
  content: attr(data-code);
  position: absolute; left: 22px; bottom: 8px;
  max-width: 42%; overflow: hidden; white-space: nowrap;
  font: 400 11px/1 var(--m-mono); letter-spacing: .07em; color: var(--m-muted);
  opacity: .22; pointer-events: none;
  -webkit-mask-image: linear-gradient(to right, transparent, #000 30%);
          mask-image: linear-gradient(to right, transparent, #000 30%);
}
.m-matrix-row > div { position: relative; z-index: 1; }
.m-matrix-row:last-of-type { border-bottom: 0; }
.m-matrix-row:hover { background: rgba(34, 211, 238, .035); }
.m-matrix-row b {
  display: block; font-size: 13.5px; font-weight: 600; color: #e6edf7; letter-spacing: .02em;
}
.m-matrix-row em {
  display: block; margin-top: 4px;
  font: 400 10.5px/1.4 var(--m-mono); font-style: normal; color: #5d7391; letter-spacing: .04em;
}
.m-matrix-row .st { font: 600 12px/1 var(--m-mono); letter-spacing: .04em; white-space: nowrap; }
.m-matrix-row .st::before {
  content: ""; display: inline-block; width: 6px; height: 6px; border-radius: 50%;
  margin-right: 7px; vertical-align: 1px;
}
.m-matrix-row .st.prod { color: #34d399; }
.m-matrix-row .st.prod::before { background: #34d399; box-shadow: 0 0 8px rgba(52, 211, 153, .7); }
/* 架构就绪·联调通过：已在真实 CSMS 实连落库验证，但最小实现 / 未对外开放体验——
   介于「生产级」与「研发中」之间的独立档，电光青标识。 */
.m-matrix-row .st.verified { color: #22d3ee; }
.m-matrix-row .st.verified::before { background: #22d3ee; box-shadow: 0 0 8px rgba(34, 211, 238, .6); }
.m-matrix-row .st.wip { color: #fbbf24; }
.m-matrix-row .st.wip::before { background: #fbbf24; box-shadow: 0 0 8px rgba(251, 191, 36, .55); }
.m-matrix-row .st.plan { color: #7f93b0; }
.m-matrix-row .st.plan::before { background: #5d7391; }
.m-matrix-row .cap { font-size: 13px; line-height: 1.7; color: #93a5bf; }
.m-matrix-row .use { font-size: 12.5px; line-height: 1.65; color: #7f93b0; }
.m-matrix-note {
  margin: 18px 0 0; font-size: 12.5px; line-height: 1.8; color: #5d7391;
}
.m-matrix-note b { color: #22d3ee; font-weight: 600; }

/* ── 协议覆盖计数带（矩阵上方汇总） ── */
/* 大字计数 + 说明，电光青呼应矩阵辉光；只分「已实连联调」与「下一代预留」两类，
   与下方逐行矩阵互为总分，不重复吹。 */
.m-cov {
  display: flex; flex-wrap: wrap; justify-content: center; align-items: center;
  gap: 16px 30px; margin: 4px auto 30px;
}
.m-cov-item { display: flex; align-items: baseline; gap: 11px; }
.m-cov-item b {
  font: 800 36px/1 var(--m-mono); color: var(--m-cyan);
  text-shadow: 0 0 16px rgba(34, 211, 238, .38);
}
.m-cov-item span { font-size: 13.5px; line-height: 1.5; color: #93a5bf; }
.m-cov-sep {
  width: 1px; height: 34px;
  background: linear-gradient(180deg, transparent, rgba(34, 211, 238, .45), transparent);
}
@media (max-width: 640px) {
  .m-cov { flex-direction: column; gap: 14px; }
  .m-cov-sep { display: none; }
}

/* ── 区块分隔线 ── */
/* 1px 电光青渐变线：给深色长页面切出层级，成本极低、不占版面 */
.m-divider {
  height: 1px; max-width: 1180px; margin: 0 auto;
  background: linear-gradient(to right,
    transparent 0%, rgba(34, 211, 238, .14) 18%,
    rgba(34, 211, 238, .55) 50%,
    rgba(34, 211, 238, .14) 82%, transparent 100%);
  box-shadow: 0 0 14px rgba(34, 211, 238, .18);
}

/* ── 响应式 ── */
@media (max-width: 1024px) {
  body.home .nav { gap: 20px; }
  /* 窄屏行内改为两列堆叠，报文水印会压到正文，直接不渲染 */
  .m-matrix-row[data-code]::after { display: none; }
  .m-hero .container { grid-template-columns: 1fr; gap: 40px; }
  .m-grid-3 { grid-template-columns: repeat(2, 1fr); }
  .m-grid-4 { grid-template-columns: repeat(2, 1fr); }
  .m-2col { grid-template-columns: 1fr; gap: 32px; }
}
@media (max-width: 768px) {
  body.home .nav.open { top: 64px; }
  .m-section { padding: 64px 0; }
  .m-section-tight { padding: 48px 0; }
  .m-hero { padding: 56px 0 48px; }
  .m-grid-3, .m-grid-4, .m-steps, .m-funnel { grid-template-columns: 1fr; }
  .m-actions { flex-direction: column; align-items: stretch; }
  .m-actions .m-btn { width: 100%; }
  .m-cta { padding: 32px 22px; }
  .m-term { font-size: 11.5px; }
  .m-compare-head { display: none; }
  .m-compare-row { grid-template-columns: 1fr; gap: 6px; padding: 15px 18px; }
  .m-compare-row b { font-size: 11px; letter-spacing: .1em; color: #5d7391; }
  .m-compare-row span { font-size: 13px; }
  .m-matrix-head { display: none; }
  .m-matrix-row { grid-template-columns: 1fr auto; gap: 8px 12px; padding: 16px 18px; align-items: start; }
  .m-matrix-row .st { text-align: right; margin-top: 2px; }
  .m-matrix-row .cap, .m-matrix-row .use { grid-column: 1 / -1; }
  .m-matrix-row .use::before { content: "场景 · "; color: #5d7391; }
}