/* ============================================================
   SonicDeliver 官网 — 视觉系统
   品牌基因继承自 SonicDeliver 2026 管理平台：
   蓝 #2563eb 主色 · 深石板 #0f172a 框架 · 白卡片内容
   ============================================================ */
:root {
  /* 品牌 */
  --accent: #2563eb;
  --accent-h: #1d4ed8;
  --accent-soft: #eaf0fe;
  --violet: #7c3aed;

  /* 语义状态（与平台一致：绿=连接中 蓝=可连接 橙=空置 灰=空闲） */
  --ok: #22c55e;
  --ok-deep: #16a34a;
  --info: #3b82f6;
  --busy: #f59e0b;
  --danger: #dc2626;

  /* 文字 */
  --t1: #111827;
  --t2: #475569;
  --t3: #94a3b8;

  /* 面 */
  --ink: #0f172a;
  --ink-2: #16233d;
  --ink-3: #1e293b;
  --border: #e2e8f0;
  --border-soft: #eef2f6;
  --bg: #f6f8fb;
  --surface: #fff;

  /* 令牌 */
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 16px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, .05);
  --shadow-md: 0 2px 8px rgba(15, 23, 42, .07), 0 1px 2px rgba(15, 23, 42, .04);
  --shadow-lg: 0 12px 32px rgba(15, 23, 42, .16);
  --container: 1140px;
  --font: "Segoe UI", "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
  --mono: "Cascadia Code", "Consolas", "SFMono-Regular", monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
code { word-break: break-all; }
html { scroll-behavior: smooth; }
body {
  font: 16px/1.75 var(--font);
  color: var(--t2);
  background: var(--surface);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-h); }
ul, ol { list-style: none; }
strong { color: var(--t1); }

.container { max-width: var(--container); margin: 0 auto; padding: 0 28px; }

/* ============ 顶部导航 ============ */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(15, 23, 42, .92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(96, 140, 235, .14);
}
.topbar-inner {
  max-width: var(--container); margin: 0 auto; padding: 0 28px;
  height: 64px; display: flex; align-items: center; gap: 40px;
}
.brand { display: flex; align-items: center; gap: 11px; color: #fff; }
.brand .logo {
  width: 34px; height: 34px; border-radius: 9px; flex: none;
  background: linear-gradient(135deg, var(--accent), var(--violet));
  display: flex; align-items: center; justify-content: center;
  font-size: 15px; font-weight: 800; color: #fff;
  box-shadow: 0 2px 8px rgba(37, 99, 235, .45);
}
.brand .wordmark { line-height: 1.15; }
.brand .wordmark b { display: block; font-size: 16px; font-weight: 700; letter-spacing: .3px; color: #fff; }
.brand .wordmark small { display: block; font-size: 9.5px; letter-spacing: 2.6px; color: #8fa3c4; font-weight: 500; }

.nav { display: flex; gap: 4px; flex: 1; justify-content: flex-end; }
.nav a {
  color: #a7b7cf; font-size: 14.5px; padding: 8px 15px;
  border-radius: var(--r-sm); transition: color .15s, background .15s;
}
.nav a:hover { color: #fff; background: rgba(255, 255, 255, .07); }
.nav a.on { color: #fff; background: rgba(37, 99, 235, .26); font-weight: 600;
  box-shadow: inset 0 0 0 1px rgba(96, 140, 235, .35); }
.nav-cta {
  color: #fff !important; background: var(--accent); margin-left: 10px;
  padding: 8px 18px !important; border-radius: var(--r-sm); font-weight: 600;
}
.nav-cta:hover { background: var(--accent-h) !important; }

.menu-btn { display: none; background: none; border: 0; color: #cbd5e1; cursor: pointer; padding: 8px; }

/* ============ 通用区块 ============ */
.section { padding: 84px 0; }
.section.alt { background: var(--bg); }
.section.dark { background: var(--ink); color: #cbd5e1; }

.sec-head { max-width: 720px; margin-bottom: 52px; }
.sec-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.eyebrow {
  display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: .22em;
  color: var(--accent); text-transform: uppercase; margin-bottom: 12px;
}
.section.dark .eyebrow { color: #6ea8ff; }
.sec-head h2 { font-size: 30px; font-weight: 700; color: var(--t1); line-height: 1.3; margin-bottom: 14px; }
.section.dark .sec-head h2 { color: #fff; }
.sec-head p { font-size: 16px; }

/* ============ 按钮 ============ */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 26px; border-radius: 10px;
  font-size: 15px; font-weight: 600; font-family: inherit;
  border: 1px solid transparent; cursor: pointer;
  transition: background .15s, border-color .15s, transform .15s;
}
.btn svg { flex: none; }
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 4px 14px rgba(37, 99, 235, .35); }
.btn-primary:hover { background: var(--accent-h); color: #fff; transform: translateY(-1px); }
.btn-ghost { background: transparent; color: #e2e8f0; border-color: rgba(203, 213, 225, .5); }
.btn-ghost:hover { background: rgba(255, 255, 255, .08); color: #fff; }
.btn-light { background: #fff; color: var(--t1); border-color: var(--border); }
.btn-light:hover { border-color: var(--accent); color: var(--accent); }
.text-link { font-weight: 600; display: inline-flex; align-items: center; gap: 6px; }
.text-link svg { transition: transform .15s; }
.text-link:hover svg { transform: translateX(3px); }

/* ============ 首页 Hero ============ */
.hero {
  background:
    radial-gradient(1000px 500px at 80% -10%, rgba(37, 99, 235, .16), transparent 60%),
    linear-gradient(180deg, #0c1428 0%, var(--ink) 100%);
  color: #cbd5e1; overflow: hidden; position: relative;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(96, 140, 235, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(96, 140, 235, .05) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(900px 600px at 60% 30%, #000 30%, transparent 75%);
}
.hero-inner {
  position: relative; max-width: var(--container); margin: 0 auto; padding: 96px 28px 72px;
  display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  gap: 56px; align-items: center;
}
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12px; font-weight: 700; letter-spacing: .2em; color: #8fb0ff;
  border: 1px solid rgba(96, 140, 235, .35); background: rgba(37, 99, 235, .12);
  padding: 6px 14px; border-radius: 999px; margin-bottom: 26px;
}
.hero-eyebrow .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 3px rgba(34, 197, 94, .22); }
.hero h1 { font-size: clamp(34px, 4.6vw, 50px); line-height: 1.22; font-weight: 700; color: #fff; margin-bottom: 22px; letter-spacing: .01em; }
.hero h1 em { font-style: normal; color: #6ea8ff; }
.hero .lead { font-size: 16.5px; line-height: 1.9; color: #9fb0c8; max-width: 520px; margin-bottom: 34px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-note { margin-top: 26px; font-size: 13px; color: #8296b0; display: flex; align-items: center; gap: 7px; }

/* Hero 面板插画 */
.hero-visual { position: relative; }
.hero-visual svg { width: 100%; height: auto; display: block; filter: drop-shadow(0 18px 44px rgba(2, 6, 23, .55)); }
.legend { display: flex; gap: 18px; justify-content: center; margin-top: 18px; font-size: 12.5px; color: #7d8fa9; flex-wrap: wrap; }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.legend i { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }

@keyframes pulse-ok { 0%, 100% { box-shadow: 0 0 0 0 rgba(34, 197, 94, .45); } 50% { box-shadow: 0 0 0 5px rgba(34, 197, 94, 0); } }
@keyframes pulse-info { 0%, 100% { box-shadow: 0 0 0 0 rgba(59, 130, 246, .4); } 50% { box-shadow: 0 0 0 5px rgba(59, 130, 246, 0); } }
@keyframes dash { to { stroke-dashoffset: -24; } }

/* 数据条 */
.stats { border-top: 1px solid rgba(96, 140, 235, .14); background: rgba(11, 18, 32, .6); position: relative; }
.stats-inner { max-width: var(--container); margin: 0 auto; padding: 30px 28px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.stat { text-align: center; }
.stat b { display: block; font-size: 26px; font-weight: 700; color: #fff; letter-spacing: .02em; }
.stat b small { font-size: 14px; font-weight: 600; color: #6ea8ff; margin-left: 2px; }
.stat span { font-size: 13px; color: #7d8fa9; }

/* ============ 组件构成（编号列表） ============ */
.comps { display: grid; gap: 0; border-top: 1px solid var(--border); }
.comp {
  display: grid; grid-template-columns: 92px 56px minmax(0, 1fr) minmax(0, 1.2fr);
  gap: 26px; align-items: center; padding: 34px 0;
  border-bottom: 1px solid var(--border);
}
.comp .no { font-size: 15px; font-weight: 700; color: var(--t3); letter-spacing: .1em; }
.comp .no b { display: block; font-size: 30px; color: var(--accent); font-family: var(--mono); }
.comp .icon-box {
  width: 56px; height: 56px; border-radius: 14px; flex: none;
  background: var(--accent-soft); color: var(--accent);
  display: flex; align-items: center; justify-content: center;
}
.comp h3 { font-size: 19px; font-weight: 700; color: var(--t1); margin-bottom: 6px; }
.comp .desc { font-size: 15px; color: var(--t2); }
.comp .detail { font-size: 14.5px; color: var(--t2); line-height: 1.85; }
.comp .detail li { display: flex; gap: 9px; margin-bottom: 7px; }
.comp .detail li svg { flex: none; margin-top: 6px; color: var(--ok-deep); }

/* ============ 能力网格（细线分格，不做卡片海） ============ */
.cap-grid { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--border); border-radius: var(--r-lg); overflow: hidden; background: var(--surface); }
.cap { padding: 34px 36px; border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); background: #fff; transition: background .15s; }
.cap:nth-child(2n) { border-right: 0; }
.cap:nth-last-child(-n+2) { border-bottom: 0; }
.cap:hover { background: #f8fafd; }
.cap .cap-icon {
  width: 44px; height: 44px; border-radius: 11px; margin-bottom: 16px;
  background: var(--accent-soft); color: var(--accent);
  display: flex; align-items: center; justify-content: center;
}
.cap h3 { font-size: 17.5px; font-weight: 700; color: var(--t1); margin-bottom: 8px; }
.cap p { font-size: 14.5px; }

/* ============ 深色安全带 ============ */
.security-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.security-item { border-top: 2px solid rgba(110, 168, 255, .35); padding-top: 22px; }
.security-item .tag { font-size: 12px; letter-spacing: .18em; color: #64748b; font-weight: 700; margin-bottom: 8px; }
.security-item h3 { font-size: 17px; font-weight: 700; color: #fff; margin-bottom: 10px; }
.security-item p { font-size: 14.5px; color: #9fb0c8; line-height: 1.85; }
.security-item .foot { margin-top: 12px; font-family: var(--mono); font-size: 12.5px; color: #6ea8ff; background: rgba(37, 99, 235, .1); border: 1px solid rgba(96, 140, 235, .2); padding: 5px 10px; border-radius: 6px; display: inline-block; }

/* ============ 架构图 ============ */
.arch { background: #fff; border: 1px solid var(--border); border-radius: var(--r-lg); padding: 40px 28px; box-shadow: var(--shadow-sm); }
.arch svg { width: 100%; height: auto; }
.arch-caption { display: flex; justify-content: center; gap: 26px; margin-top: 20px; font-size: 13px; color: var(--t3); flex-wrap: wrap; }

/* ============ 截图展示 ============ */
.shots { display: grid; gap: 28px; }
.shots.duo { grid-template-columns: 1fr 1fr; }
.shot { background: #fff; border: 1px solid var(--border); border-radius: var(--r-md); padding: 10px; box-shadow: var(--shadow-md); }
.shot img { border-radius: 7px; border: 1px solid var(--border-soft); width: 100%; }
.shot figcaption { padding: 12px 8px 6px; font-size: 13.5px; color: var(--t2); display: flex; align-items: center; gap: 8px; }
.shot figcaption b { color: var(--t1); }

/* ============ 场景行（左右交替） ============ */
.scn { display: grid; grid-template-columns: 64px minmax(0, 1fr); gap: 24px; padding: 36px 0; border-bottom: 1px solid var(--border); }
.scn:first-of-type { border-top: 1px solid var(--border); }
.scn .idx {
  width: 52px; height: 52px; border-radius: 13px; margin-top: 4px;
  background: var(--ink); color: #fff; font-family: var(--mono);
  font-size: 17px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.scn h3 { font-size: 19px; font-weight: 700; color: var(--t1); margin-bottom: 8px; }
.scn p { font-size: 15px; max-width: 860px; }
.scn .chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.chip {
  font-size: 12.5px; color: var(--t2); background: var(--bg);
  border: 1px solid var(--border); border-radius: 999px; padding: 4px 13px;
}
.scn .gain { margin-top: 12px; font-size: 13.5px; color: var(--ok-deep); display: flex; align-items: center; gap: 7px; font-weight: 600; }

/* ============ 步骤 ============ */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; counter-reset: step; }
.steps.trio { grid-template-columns: repeat(3, 1fr); }
.step { position: relative; padding: 0 22px; }
.step + .step { border-left: 1px solid var(--border); }
.step .num {
  width: 40px; height: 40px; border-radius: 50%; margin-bottom: 16px;
  background: var(--accent-soft); color: var(--accent); font-weight: 700; font-size: 15px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid #d4e2fc;
}
.step h3 { font-size: 16.5px; font-weight: 700; color: var(--t1); margin-bottom: 7px; }
.step p { font-size: 14px; }

/* ============ 规格表 ============ */
.spec-table { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid var(--border); border-radius: var(--r-md); overflow: hidden; font-size: 14.5px; box-shadow: var(--shadow-sm); }
.spec-table th, .spec-table td { text-align: left; padding: 13px 20px; border-bottom: 1px solid var(--border-soft); vertical-align: top; }
.spec-table th { background: var(--bg); color: var(--t1); font-weight: 700; white-space: nowrap; width: 190px; }
.spec-table tr:last-child td, .spec-table tr:last-child th { border-bottom: 0; }
.spec-table td code { font-family: var(--mono); font-size: 13px; background: var(--bg); border: 1px solid var(--border-soft); border-radius: 5px; padding: 1px 7px; color: #33507a; }

/* ============ 功能清单 ============ */
.feature-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; }
.feature-group h3 { font-size: 16px; font-weight: 700; color: var(--t1); margin-bottom: 16px; display: flex; align-items: center; gap: 10px; }
.feature-group h3 .icon-box { width: 34px; height: 34px; border-radius: 9px; }
.feature-group li { display: flex; gap: 10px; padding: 9px 0; border-bottom: 1px dashed var(--border-soft); font-size: 14.5px; }
.feature-group li svg { flex: none; margin-top: 6px; color: var(--accent); }
.feature-group li b { color: var(--t1); font-weight: 600; }

/* ============ FAQ ============ */
.faq { max-width: 800px; margin: 0 auto; }
.faq details { border: 1px solid var(--border); border-radius: var(--r-md); background: #fff; margin-bottom: 14px; overflow: hidden; }
.faq summary {
  list-style: none; cursor: pointer; padding: 17px 22px;
  font-size: 15.5px; font-weight: 600; color: var(--t1);
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  transition: background .15s;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary:hover { background: var(--bg); }
.faq summary .chev { flex: none; color: var(--t3); transition: transform .2s; }
.faq details[open] summary .chev { transform: rotate(180deg); }
.faq details[open] summary { border-bottom: 1px solid var(--border-soft); }
.faq .faq-body { padding: 16px 22px 20px; font-size: 14.5px; }
.faq .faq-body code { font-family: var(--mono); font-size: 13px; background: var(--bg); border: 1px solid var(--border-soft); border-radius: 5px; padding: 1px 7px; color: #33507a; }

/* ============ 页面 Hero（内页） ============ */
.page-hero {
  background:
    radial-gradient(800px 400px at 85% -20%, rgba(37, 99, 235, .18), transparent 60%),
    linear-gradient(180deg, #0c1428, var(--ink));
  color: #9fb0c8; padding: 72px 0 60px; position: relative; overflow: hidden;
}
.page-hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(96, 140, 235, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(96, 140, 235, .05) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(700px 400px at 70% 0%, #000 30%, transparent 75%);
}
.page-hero .container { position: relative; }
.breadcrumb { font-size: 13px; color: #64748b; margin-bottom: 18px; }
.breadcrumb a { color: #8fa3c4; }
.breadcrumb a:hover { color: #fff; }
.page-hero h1 { font-size: clamp(30px, 3.6vw, 40px); font-weight: 700; color: #fff; margin-bottom: 14px; }
.page-hero p { max-width: 680px; font-size: 16px; }

/* ============ 联系页 ============ */
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 64px; }
.contact-card { border: 1px solid var(--border); border-radius: var(--r-lg); padding: 32px; background: #fff; box-shadow: var(--shadow-sm); display: flex; flex-direction: column; }
.contact-card .icon-box { width: 46px; height: 46px; border-radius: 12px; margin-bottom: 18px; }
.contact-card h3 { font-size: 17px; font-weight: 700; color: var(--t1); margin-bottom: 10px; }
.contact-card p { font-size: 14.5px; margin-bottom: 14px; }
.contact-card .val { font-size: 16px; font-weight: 700; color: var(--accent); word-break: break-all; margin-top: auto; }

.ciit-band { background: var(--ink); color: #9fb0c8; border-radius: var(--r-lg); padding: 48px; display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); gap: 44px; align-items: center; }
.ciit-band h3 { font-size: 22px; font-weight: 700; color: #fff; margin-bottom: 14px; }
.ciit-band p { font-size: 14.5px; line-height: 1.9; }
.ciit-band .btn { margin-top: 20px; }
.ciit-facts { border-left: 1px solid rgba(96, 140, 235, .2); padding-left: 40px; }
.ciit-facts li { display: flex; gap: 10px; font-size: 14px; padding: 7px 0; color: #cbd5e1; }
.ciit-facts li svg { flex: none; margin-top: 5px; color: #6ea8ff; }

/* ============ 终端块 ============ */
.terminal {
  background: #0d1830; border: 1px solid rgba(96, 140, 235, .25);
  border-radius: var(--r-md); padding: 18px 24px;
  font-family: var(--mono); font-size: 13.5px; line-height: 2.1; color: #a8c7f0;
  overflow-x: auto;
}

/* ============ 部署步骤 ============ */
.deploy-steps { counter-reset: dep; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.deploy-step { background: #fff; border: 1px solid var(--border); border-radius: var(--r-md); padding: 22px 24px; position: relative; counter-increment: dep; }
.deploy-step::before {
  content: counter(dep, decimal-leading-zero); font-family: var(--mono);
  font-size: 13px; font-weight: 700; color: var(--accent);
  display: inline-block; margin-bottom: 8px;
}
.deploy-step h4 { font-size: 15px; font-weight: 700; color: var(--t1); margin-bottom: 5px; }
.deploy-step p { font-size: 13.5px; }

/* ============ 页脚 ============ */
.footer { background: #0b1220; color: #7d8fa9; font-size: 14px; }
.footer-top { max-width: var(--container); margin: 0 auto; padding: 56px 28px 40px; display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr) minmax(0, 1fr); gap: 44px; }
.footer .brand { margin-bottom: 18px; }
.footer-desc { line-height: 1.9; max-width: 380px; }
.footer h4 { color: #cbd5e1; font-size: 14px; font-weight: 700; margin-bottom: 16px; letter-spacing: .05em; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { color: #7d8fa9; }
.footer-col a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(96, 140, 235, .12); }
.footer-bottom-inner { max-width: var(--container); margin: 0 auto; padding: 20px 28px; display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; font-size: 13px; color: #64748b; }
.footer-bottom a { color: #8fa3c4; }
.footer-bottom a:hover { color: #fff; }

/* ============ 滚动显现（克制） ============ */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .5s ease, transform .5s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ============ 响应式 ============ */
@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; padding-top: 72px; padding-bottom: 56px; }
  .hero-visual { max-width: 560px; margin: 0 auto; }
  .stats-inner { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .comp { grid-template-columns: 56px 44px; grid-template-areas: "no icon" "title title" "desc desc" "detail detail"; row-gap: 10px; }
  .comp .no { grid-area: no; align-self: start; }
  .comp .no b { font-size: 22px; }
  .comp .icon-box { grid-area: icon; width: 44px; height: 44px; border-radius: 11px; }
  .comp .comp-main { grid-area: title; }
  .comp .detail { grid-area: detail; }
  .cap-grid { grid-template-columns: 1fr; }
  .cap { border-right: 0 !important; border-bottom: 1px solid var(--border) !important; }
  .cap:last-child { border-bottom: 0 !important; }
  .security-list { grid-template-columns: 1fr; gap: 28px; }
  .shots.duo { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr 1fr; gap: 24px; }
  .steps.trio { grid-template-columns: 1fr; }
  .step + .step { border-left: 0; }
  .step { border: 1px solid var(--border-soft); border-radius: var(--r-md); padding: 20px; }
  .feature-cols { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .ciit-band { grid-template-columns: 1fr; padding: 36px 28px; }
  .ciit-facts { border-left: 0; padding-left: 0; border-top: 1px solid rgba(96, 140, 235, .2); padding-top: 24px; }
  .deploy-steps { grid-template-columns: 1fr 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
}
@media (max-width: 640px) {
  .menu-btn { display: block; margin-left: auto; }
  .nav {
    display: none; position: absolute; top: 64px; left: 0; right: 0;
    flex-direction: column; background: var(--ink); padding: 12px 20px 18px;
    border-bottom: 1px solid rgba(96, 140, 235, .18); gap: 2px;
  }
  .nav.open { display: flex; }
  .nav a { padding: 11px 14px; }
  .nav-cta { margin-left: 0; margin-top: 8px; text-align: center; }
  .section { padding: 60px 0; }
  .stats-inner { grid-template-columns: repeat(2, 1fr); }
  .steps, .deploy-steps { grid-template-columns: 1fr; }
  .spec-table th, .spec-table td { padding: 11px 14px; }
  .spec-table th { width: 110px; }
}