/* ============================================================
   寓枢｜公寓管理 AI 中枢  —  全局样式（B 端科技商务 · 深蓝）
   出品：房速联｜四川澜鉴智能科技
   ============================================================ */

:root {
  /* 主色：深蓝 */
  --navy-900: #061a33;
  --navy-800: #0a2647;
  --navy-700: #0e3160;
  --navy-600: #123c78;
  /* 辅助：亮蓝 / 浅蓝 */
  --blue-500: #2f80ed;
  --blue-400: #4f9bff;
  --blue-300: #8fc0ff;
  --blue-soft: #eaf2fd;
  --blue-soft-2: #f4f8fe;
  /* 中性 */
  --ink: #14233b;
  --text: #2a3a54;
  --muted: #5c6b85;
  --line: #e4ecf7;
  --bg: #ffffff;
  --bg-alt: #f5f9ff;
  --success: #1faa6b;
  --warn: #e8a33d;
  --shadow-sm: 0 4px 14px rgba(10, 38, 71, .07);
  --shadow-md: 0 12px 32px rgba(10, 38, 71, .10);
  --shadow-lg: 0 20px 50px rgba(10, 38, 71, .16);
  --radius: 14px;
  --radius-sm: 10px;
  --max: 1200px;
  --nav-h: 68px;
  --font: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.section { padding: 88px 0; }
.section-alt { background: var(--bg-alt); }
.center { text-align: center; }

/* ---------- 文字与标题 ---------- */
.eyebrow {
  display: inline-block;
  font-size: 13px; letter-spacing: 2px; font-weight: 600;
  color: var(--blue-500);
  background: var(--blue-soft);
  padding: 6px 14px; border-radius: 999px;
  margin-bottom: 18px;
}
h1, h2, h3 { color: var(--ink); line-height: 1.25; font-weight: 700; }
h2.section-title { font-size: 34px; margin-bottom: 14px; letter-spacing: -.5px; }
.section-sub { color: var(--muted); font-size: 17px; max-width: 720px; margin: 0 auto 48px; }
.center .section-sub { margin-left: auto; margin-right: auto; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 26px; border-radius: 999px; font-size: 15px; font-weight: 600;
  cursor: pointer; border: 1.5px solid transparent; transition: all .2s ease; white-space: nowrap;
}
.btn-primary { background: linear-gradient(135deg, var(--blue-500), var(--navy-600)); color: #fff; box-shadow: 0 8px 20px rgba(47,128,237,.32); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(47,128,237,.42); }
.btn-ghost { background: #fff; color: var(--navy-700); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--blue-400); color: var(--blue-500); }
.btn-outline-light { background: transparent; color: #fff; border-color: rgba(255,255,255,.5); }
.btn-outline-light:hover { background: rgba(255,255,255,.12); }
.btn-lg { padding: 15px 32px; font-size: 16px; }
.btn-block { width: 100%; }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 1000;
  background: rgba(6, 26, 51, .92);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.nav { height: var(--nav-h); display: flex; align-items: center; justify-content: space-between; }
.logo { display: flex; align-items: center; gap: 10px; color: #fff; font-weight: 700; font-size: 19px; letter-spacing: .5px; }
.logo img { height: 46px; width: auto; display: block; }
.site-footer .logo img { height: 50px; }
.logo small { font-size: 12px; color: var(--blue-300); font-weight: 500; letter-spacing: 1px; display: block; line-height: 1; margin-top: 2px; }
.nav-links { display: flex; gap: 4px; align-items: center; }
.nav-links a {
  color: rgba(255,255,255,.82); font-size: 15px; padding: 9px 14px; border-radius: 8px; transition: all .18s; position: relative;
}
.nav-links a:hover { color: #fff; background: rgba(255,255,255,.08); }
.nav-links a.active { color: #fff; }
.nav-links a.active::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 2px; height: 2px; background: var(--blue-400); border-radius: 2px;
}
.nav-cta { display: flex; gap: 10px; align-items: center; }
.nav-cta .btn { padding: 9px 18px; font-size: 14px; }
.nav-toggle { display: none; background: none; border: none; color: #fff; font-size: 26px; cursor: pointer; }

/* ---------- 首屏 Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(1200px 500px at 80% -10%, rgba(47,128,237,.35), transparent 60%),
    radial-gradient(900px 500px at 10% 10%, rgba(18,60,120,.55), transparent 55%),
    linear-gradient(160deg, var(--navy-900), var(--navy-700) 60%, var(--navy-600));
  color: #fff; padding: 96px 0 110px;
}
.hero::after {
  content: ""; position: absolute; inset: 0;
  background-image: radial-gradient(rgba(255,255,255,.06) 1px, transparent 1px);
  background-size: 26px 26px; opacity: .5; pointer-events: none;
}
.hero .container { position: relative; z-index: 2; }
.hero h1 { color: #fff; font-size: 50px; letter-spacing: -1px; max-width: 880px; line-height: 1.15; }
.hero .sub { font-size: 21px; color: var(--blue-300); margin: 20px 0 10px; font-weight: 600; }
.hero .desc { font-size: 17px; color: rgba(255,255,255,.82); max-width: 680px; margin-bottom: 36px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 46px; margin-top: 56px; flex-wrap: wrap; }
.hero-stats .stat .num { font-size: 32px; font-weight: 800; color: #fff; }
.hero-stats .stat .num span { color: var(--blue-300); }
.hero-stats .stat .label { font-size: 14px; color: rgba(255,255,255,.7); }

/* ---------- 卡片网格 ---------- */
.grid { display: grid; gap: 24px; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 26px; box-shadow: var(--shadow-sm); transition: all .25s ease;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: var(--blue-300); }
.card .icon {
  width: 54px; height: 54px; border-radius: 13px; display: grid; place-items: center;
  font-size: 26px; background: var(--blue-soft); margin-bottom: 18px;
}
.card h3 { font-size: 19px; margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 15px; }

/* ---------- 价值清单 ---------- */
.checklist { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px 32px; max-width: 920px; margin: 0 auto; }
.checklist li { display: flex; gap: 12px; align-items: flex-start; font-size: 16px; color: var(--text); }
.checklist .tick {
  flex: none; width: 26px; height: 26px; border-radius: 50%; background: var(--blue-soft); color: var(--blue-500);
  display: grid; place-items: center; font-size: 14px; font-weight: 700; margin-top: 2px;
}

/* ---------- Logo 墙 ---------- */
.logo-wall { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px; margin-top: 8px; }
.logo-wall .logo-cell {
  flex: 0 0 calc(20% - 13px);
  height: 86px; border: 1px solid var(--line); border-radius: 12px;
  display: grid; place-items: center; background: #fff; padding: 12px 18px;
  transition: box-shadow .2s, transform .2s;
}
.logo-wall .logo-cell:hover { box-shadow: var(--shadow-sm); transform: translateY(-2px); }
.logo-wall .logo-cell img {
  max-width: 100%; object-fit: contain;
  mix-blend-mode: multiply; opacity: .92;
}
/* 光学对齐：按原始比例分配视觉高度，避免方形标显小、长条标显大 */
.logo-wall .logo-cell img.lg-xl { max-height: 32px; }
.logo-wall .logo-cell img.lg-wide { max-height: 30px; }
.logo-wall .logo-cell img.lg-mid { max-height: 38px; }
.logo-wall .logo-cell img.lg-sq { max-height: 46px; }

/* ---------- 定价预览 / 表格 ---------- */
.price-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; max-width: 1040px; margin: 0 auto; }
.price-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 22px; text-align: center; box-shadow: var(--shadow-sm); position: relative;
}
.price-card .tier { font-size: 16px; font-weight: 700; color: var(--navy-700); }
.price-card .fee { font-size: 30px; font-weight: 800; color: var(--ink); margin: 12px 0 4px; }
.price-card .fee small { font-size: 14px; color: var(--muted); font-weight: 500; }
.price-card .tag { font-size: 13px; color: var(--muted); }
.price-card.hot {
  border: 2px solid var(--blue-500); box-shadow: var(--shadow-md); transform: translateY(-8px);
  background: linear-gradient(180deg, #fff, #f7fbff);
}
.price-card .badge {
  position: absolute; top: -13px; left: 50%; transform: translateX(-50%);
  background: linear-gradient(135deg, var(--blue-500), var(--navy-600)); color: #fff;
  font-size: 12px; font-weight: 700; padding: 5px 16px; border-radius: 999px; white-space: nowrap;
}

/* 定价主表 */
.price-table-wrap { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--line); box-shadow: var(--shadow-sm); }
table.price-table { width: 100%; border-collapse: collapse; min-width: 920px; background: #fff; }
table.price-table th, table.price-table td { padding: 16px 18px; text-align: left; font-size: 14.5px; border-bottom: 1px solid var(--line); vertical-align: top; }
table.price-table thead th { background: var(--navy-800); color: #fff; font-size: 15px; font-weight: 700; position: sticky; top: 0; white-space: nowrap; }
table.price-table tbody tr:hover { background: var(--blue-soft-2); }
table.price-table td:first-child { font-weight: 700; color: var(--navy-700); white-space: nowrap; }
table.price-table td:nth-child(2) { white-space: nowrap; }
tr.hot-row { background: linear-gradient(90deg, rgba(47,128,237,.08), rgba(47,128,237,.02)); }
tr.hot-row td:first-child { color: var(--blue-500); }
.hot-pill { display: inline-block; background: var(--blue-500); color: #fff; font-size: 11px; font-weight: 700; padding: 2px 8px; border-radius: 999px; margin-left: 6px; vertical-align: middle; }

.price-notes { margin-top: 22px; background: var(--blue-soft-2); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 20px 24px; }
.price-notes ol { counter-reset: n; list-style: none; }
.price-notes li { counter-increment: n; position: relative; padding-left: 30px; margin: 8px 0; font-size: 14.5px; color: var(--text); }
.price-notes li::before { content: counter(n); position: absolute; left: 0; top: 2px; width: 20px; height: 20px; border-radius: 50%; background: var(--blue-500); color: #fff; font-size: 12px; font-weight: 700; display: grid; place-items: center; }
.price-foot-actions { display: flex; gap: 14px; justify-content: center; margin-top: 30px; flex-wrap: wrap; }

/* ---------- 产品能力 Tabs ---------- */
.tabs { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-bottom: 36px; }
.tab-btn {
  padding: 12px 22px; border-radius: 999px; border: 1.5px solid var(--line); background: #fff;
  font-size: 15px; font-weight: 600; color: var(--navy-700); cursor: pointer; transition: all .2s;
}
.tab-btn:hover { border-color: var(--blue-400); }
.tab-btn.active { background: linear-gradient(135deg, var(--blue-500), var(--navy-600)); color: #fff; border-color: transparent; box-shadow: 0 8px 18px rgba(47,128,237,.3); }
.tab-panel { display: none; }
.tab-panel.active { display: block; animation: fade .35s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.feature-row { display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: center; }
.feature-row .ftext h3 { font-size: 24px; margin-bottom: 14px; }
.feature-row .ftext p { color: var(--muted); font-size: 16px; margin-bottom: 18px; }
.feature-list li { display: flex; gap: 10px; align-items: flex-start; margin: 10px 0; color: var(--text); }
.feature-list .dot { flex: none; width: 8px; height: 8px; border-radius: 50%; background: var(--blue-500); margin-top: 9px; }
.feature-visual {
  background: linear-gradient(160deg, var(--navy-800), var(--navy-600)); border-radius: var(--radius);
  padding: 34px; color: #fff; min-height: 300px; display: flex; flex-direction: column; justify-content: center; box-shadow: var(--shadow-md);
}
.feature-visual .fv-icon { font-size: 40px; margin-bottom: 14px; }
.feature-visual h4 { font-size: 20px; color: #fff; margin-bottom: 10px; }
.feature-visual p { color: rgba(255,255,255,.78); font-size: 14.5px; }
.feature-visual .chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.feature-visual .chips span { background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.18); padding: 5px 12px; border-radius: 999px; font-size: 13px; }

/* 配套能力小条 */
.sidecaps { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 30px; }
.sidecaps .cap { background: var(--blue-soft); border: 1px solid var(--line); border-radius: 999px; padding: 10px 18px; font-size: 14px; color: var(--navy-700); font-weight: 600; }

/* ---------- 解决方案业态卡片 ---------- */
.sol-card { position: relative; overflow: hidden; }
.sol-card .tag-top { font-size: 13px; font-weight: 700; color: var(--blue-500); letter-spacing: 1px; }
.sol-card h3 { font-size: 20px; margin: 8px 0 6px; }
.sol-card .match { display: inline-block; background: var(--navy-800); color: #fff; font-size: 12px; padding: 4px 12px; border-radius: 999px; margin-bottom: 14px; }
.sol-card p { color: var(--muted); font-size: 15px; }
.sol-card .ribbon { position: absolute; top: 0; right: 0; background: var(--blue-500); color: #fff; font-size: 11px; font-weight: 700; padding: 5px 14px; border-bottom-left-radius: 12px; }
/* 三业态并排：三列等宽等高，长标题自然换行不挤压 */
.sol-grid { align-items: stretch; }
.sol-grid .sol-card { display: flex; flex-direction: column; height: 100%; }
.sol-grid .sol-card h3 { min-height: 56px; }
.sol-grid .sol-card .match { align-self: flex-start; }
.sol-grid .sol-card p { margin-bottom: 0; }

/* ---------- 客户案例 ---------- */
.case-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; box-shadow: var(--shadow-sm); display: flex; flex-direction: column; }
.case-card .ctype { font-size: 13px; font-weight: 700; color: var(--blue-500); }
.case-card h3 { font-size: 20px; margin: 6px 0 16px; }
.case-card .flow { display: grid; gap: 12px; }
.case-step { display: grid; grid-template-columns: 92px 1fr; gap: 12px; align-items: start; }
.case-step .k { font-size: 13px; font-weight: 700; color: var(--navy-700); background: var(--blue-soft); border-radius: 8px; padding: 6px 8px; text-align: center; }
.case-step .v { font-size: 14.5px; color: var(--text); }
.case-card .effect { margin-top: 16px; padding-top: 16px; border-top: 1px dashed var(--line); font-size: 14.5px; color: var(--success); font-weight: 600; }
.case-card .btn { margin-top: 18px; align-self: flex-start; }

/* ---------- 安全合规 ---------- */
.secure-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.secure-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; display: flex; gap: 18px; box-shadow: var(--shadow-sm); }
.secure-card .sicon { flex: none; width: 50px; height: 50px; border-radius: 12px; background: var(--navy-800); color: #fff; display: grid; place-items: center; font-size: 24px; }
.secure-card h3 { font-size: 18px; margin-bottom: 8px; }
.secure-card p { color: var(--muted); font-size: 15px; }

/* ---------- 关于我们 ---------- */
.about-hero { background: linear-gradient(160deg, var(--navy-800), var(--navy-600)); color: #fff; padding: 80px 0; }
.about-hero h1 { color: #fff; font-size: 40px; }
.about-hero p { color: rgba(255,255,255,.82); font-size: 17px; max-width: 760px; margin-top: 16px; }
.about-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 40px; align-items: center; }
.about-grid h2 { font-size: 28px; margin-bottom: 16px; }
.about-grid p { color: var(--muted); font-size: 16px; margin-bottom: 14px; }
.about-info { background: var(--blue-soft-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.about-info .row { display: flex; gap: 12px; padding: 12px 0; border-bottom: 1px dashed var(--line); font-size: 15px; }
.about-info .row:last-child { border-bottom: none; }
.about-info .rk { color: var(--muted); flex: none; width: 84px; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--navy-900); color: rgba(255,255,255,.72); padding: 56px 0 26px; }
.footer-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 30px; }
.footer-top .logo { color: #fff; margin-bottom: 14px; }
.footer-top p { font-size: 14px; line-height: 1.8; }
.footer-col h4 { color: #fff; font-size: 15px; margin-bottom: 16px; }
.footer-col a { display: block; font-size: 14px; color: rgba(255,255,255,.7); padding: 6px 0; transition: color .18s; }
.footer-col a:hover { color: var(--blue-300); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); margin-top: 40px; padding-top: 22px; text-align: center; font-size: 13px; color: rgba(255,255,255,.55); }

/* ---------- 右侧悬浮 CTA ---------- */
.float-cta {
  position: fixed; right: 22px; top: 50%; transform: translateY(-50%); z-index: 900;
  display: flex; flex-direction: column; gap: 12px;
}
.float-cta button {
  width: 56px; height: 56px; border-radius: 50%; border: none; cursor: pointer;
  background: linear-gradient(135deg, var(--blue-500), var(--navy-600)); color: #fff;
  box-shadow: 0 8px 22px rgba(10,38,71,.4); display: grid; place-items: center; font-size: 22px;
  transition: transform .2s; position: relative;
}
.float-cta button:hover { transform: scale(1.08); }
.float-cta button span.label {
  position: absolute; right: 66px; top: 50%; transform: translateY(-50%);
  background: rgba(6,26,51,.92); color: #fff; font-size: 13px; font-weight: 600; white-space: nowrap;
  padding: 7px 12px; border-radius: 8px; opacity: 0; pointer-events: none; transition: opacity .2s;
}
.float-cta button:hover span.label { opacity: 1; }

/* ---------- 弹窗表单 ---------- */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(6,26,51,.55); backdrop-filter: blur(3px);
  z-index: 1200; display: none; align-items: center; justify-content: center; padding: 20px;
}
.modal-overlay.open { display: flex; animation: fade .25s ease; }
.modal {
  background: #fff; border-radius: 18px; width: 100%; max-width: 460px; padding: 34px 32px;
  box-shadow: var(--shadow-lg); position: relative; max-height: 92vh; overflow-y: auto;
}
.modal .close { position: absolute; top: 16px; right: 18px; background: none; border: none; font-size: 26px; color: var(--muted); cursor: pointer; line-height: 1; }
.modal h3 { font-size: 22px; margin-bottom: 6px; }
.modal .msub { color: var(--muted); font-size: 14px; margin-bottom: 22px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 14px; font-weight: 600; color: var(--navy-700); margin-bottom: 7px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 12px 14px; border: 1.5px solid var(--line); border-radius: 10px;
  font-size: 15px; font-family: var(--font); color: var(--text); transition: border-color .18s; background: #fff;
}
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--blue-500); }
.field textarea { resize: vertical; min-height: 84px; }
.modal .hint { font-size: 12px; color: var(--muted); margin-top: 10px; text-align: center; }
.modal-success { text-align: center; padding: 20px 0; }
.modal-success .ok { width: 64px; height: 64px; border-radius: 50%; background: var(--success); color: #fff; font-size: 34px; display: grid; place-items: center; margin: 0 auto 18px; }
.modal-success h3 { margin-bottom: 8px; }
.modal-success p { color: var(--muted); font-size: 15px; }

/* ---------- 风险提示 ---------- */
.disclaimer { font-size: 13px; color: var(--muted); background: #fff8ef; border: 1px solid #f3e2c7; border-radius: 10px; padding: 14px 18px; margin-top: 28px; }
.disclaimer strong { color: var(--warn); }

/* ---------- FAQ 手风琴 ---------- */
.faq { max-width: 860px; margin: 0 auto; }
.faq-item { border: 1px solid var(--line); border-radius: var(--radius-sm); margin-bottom: 12px; background: #fff; overflow: hidden; }
.faq-q { width: 100%; text-align: left; background: none; border: none; cursor: pointer; padding: 18px 22px; font-size: 16px; font-weight: 600; color: var(--navy-700); display: flex; justify-content: space-between; align-items: center; gap: 14px; }
.faq-q .arrow { flex: none; transition: transform .25s; color: var(--blue-500); font-size: 18px; }
.faq-item.open .faq-q .arrow { transform: rotate(180deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq-a .inner { padding: 0 22px 20px; color: var(--text); font-size: 15px; }
.faq-a .inner p { margin: 8px 0; }
.faq-a .inner ol, .faq-a .inner ul { margin: 8px 0 8px 20px; }
.faq-a .inner li { margin: 6px 0; }
.faq-a .inner .mini-cta { margin-top: 14px; }
.faq-a .inner .tip { font-size: 13.5px; color: var(--muted); background: var(--blue-soft-2); padding: 10px 14px; border-radius: 8px; margin-top: 12px; }

/* ---------- 通用区块标题 ---------- */
.cta-band { background: linear-gradient(135deg, var(--navy-800), var(--blue-500)); color: #fff; border-radius: 20px; padding: 46px 40px; text-align: center; }
.cta-band h2 { color: #fff; font-size: 28px; margin-bottom: 12px; }
.cta-band p { color: rgba(255,255,255,.85); margin-bottom: 24px; font-size: 16px; }
.cta-band .hero-actions { justify-content: center; }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .sol-grid { grid-template-columns: 1fr; }
  .sol-grid .sol-card h3 { min-height: 0; }
  .price-cards { grid-template-columns: repeat(2, 1fr); }
  .logo-wall .logo-cell { flex: 0 0 calc(33.333% - 11px); }
  .feature-row { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  .section { padding: 60px 0; }
  .nav-links, .nav-cta { display: none; }
  .nav-toggle { display: block; }
  .nav.open .nav-links {
    display: flex; flex-direction: column; position: absolute; top: var(--nav-h); left: 0; right: 0;
    background: var(--navy-800); padding: 14px; gap: 4px; box-shadow: var(--shadow-md);
  }
  .nav.open .nav-links a { padding: 12px 14px; }
  .hero h1 { font-size: 34px; }
  .hero .sub { font-size: 18px; }
  .hero-stats { gap: 26px; }
  .hero-stats .stat .num { font-size: 26px; }
  h2.section-title { font-size: 26px; }
  .grid-4, .grid-3, .grid-2, .secure-grid, .checklist { grid-template-columns: 1fr; }
  .price-cards { grid-template-columns: 1fr; }
  .price-card.hot { transform: none; }
  .logo-wall .logo-cell { flex: 0 0 calc(50% - 8px); }
  .footer-top { grid-template-columns: 1fr; }
  .float-cta { right: 12px; }
  .float-cta button { width: 48px; height: 48px; font-size: 19px; }
  .float-cta button span.label { display: none; }
  .case-step { grid-template-columns: 80px 1fr; }
}