/* ============================================================
   火齐镜 AI 咨询 · 统一设计系统（对标 gbaai.club 柔和视觉）
   深藏青 #0a1422 · 柔和青 #38bdf8/#22d3ee · 淡渐变描边 · 低饱和克制
   ============================================================ */
:root {
  color-scheme: dark;
  --bg: #0a1422;
  --bg-soft: #0e1a2b;
  --card: #10203a;
  --card-2: #16314d;
  --line: rgba(56, 189, 248, 0.15);
  --line-2: rgba(56, 189, 248, 0.32);
  --cyan: #38bdf8;
  --cyan-2: #22d3ee;
  --grad: linear-gradient(100deg, #38bdf8 0%, #22d3ee 100%);
  --text: #e6eef6;
  --muted: #9fb3c9;
  --faint: #6f87a3;
  --radius: 16px;
  --shadow-glow: 0 12px 40px rgba(56, 189, 248, 0.14);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, system-ui, sans-serif;
  color: var(--text);
  line-height: 1.62;
  background:
    radial-gradient(1200px 680px at 12% -8%, rgba(56, 189, 248, 0.07), transparent 62%),
    radial-gradient(1000px 600px at 88% 18%, rgba(34, 211, 238, 0.05), transparent 62%),
    radial-gradient(900px 520px at 18% 82%, rgba(56, 189, 248, 0.04), transparent 62%),
    var(--bg);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
button, input, select, textarea { font-family: inherit; }

/* 爬虫可读正文：视觉隐藏但对搜索引擎/AI 搜索快照可见（与可见文案一致，非隐藏欺骗） */
.seo-sr-only {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* 微信内「一键填写」按钮（仅微信浏览器显示） */
.wx-fill-btn {
  display: none; margin-top: 10px; width: 100%;
  padding: 12px; border-radius: 10px; border: none; cursor: pointer;
  background: linear-gradient(100deg, #07c160, #09ad56); color: #fff;
  font-size: 14.5px; font-weight: 800;
}
body.is-wechat .wx-fill-btn { display: block; }

/* 留资成功态高亮 */
.form-msg.ok { color: #4ade80; }
.form-msg.err { color: #f87171; }

.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
.section { padding: 88px 0; }

.text-grad {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------------- 图标 ---------------- */
.icon {
  display: inline-flex; flex: none; width: 20px; height: 20px;
  color: var(--cyan); align-items: center; justify-content: center;
}
.icon svg { width: 100%; height: 100%; }
.icon.sm { width: 15px; height: 15px; }
.icon.lg { width: 22px; height: 22px; }
.icon.ck { color: var(--cyan-2); }

/* ---------------- 顶部导航 ---------------- */
.announce {
  background: rgba(56, 189, 248, 0.07);
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  text-align: center;
  font-size: 13px;
  padding: 8px 16px;
}
.announce b { color: var(--cyan); }
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(10, 20, 34, 0.78);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 74px; }
.brand { display: flex; flex-direction: column; line-height: 1.25; }
.b-name { display: flex; }
.b-main, .b-accent {
  font-size: 21px; font-weight: 800; letter-spacing: 0.5px;
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.b-sub { font-size: 11.5px; color: var(--muted); letter-spacing: 1px; }
.nav-links { flex: 1; display: flex; align-items: center; justify-content: center; gap: 38px; }
.nav-links a { font-size: 15px; font-weight: 400; color: #cfd9e6; transition: color 0.2s; white-space: nowrap; }
.nav-links a:hover { color: #ffffff; }

/* 汉堡按钮（默认隐藏，窄屏显示） */
.nav-toggle {
  display: none;
  width: 42px; height: 42px; border: 1px solid var(--line-2);
  border-radius: 10px; background: rgba(255, 255, 255, 0.04);
  flex-direction: column; justify-content: center; align-items: center; gap: 5px;
  cursor: pointer; padding: 0;
}
.nav-toggle span {
  display: block; width: 18px; height: 2px; border-radius: 2px;
  background: #cfd9e6; transition: transform 0.25s, opacity 0.2s;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 移动抽屉（默认隐藏，窄屏由 JS 切换 .open） */
.nav-mobile {
  display: none;
  position: absolute; left: 0; right: 0; top: 100%;
  background: rgba(10, 20, 34, 0.97);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  padding: 14px 24px 20px;
}
.nav-mobile.open { display: block; }
.nav-mobile-links { display: flex; flex-direction: column; }
.nav-mobile-links a {
  font-size: 16px; font-weight: 600; color: #d4e0ee;
  padding: 14px 4px; border-bottom: 1px solid var(--line);
}
.nav-mobile-links a:last-child { border-bottom: none; }
.nav-mobile-search { margin-top: 14px; position: relative; }
.nav-mobile-search input {
  width: 100%; background: var(--bg-soft); border: 1px solid var(--line-2);
  border-radius: 10px; color: var(--text); padding: 12px 14px; font-size: 14px; outline: none;
}
.nav-mobile-search input:focus { border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.12); }
.nav-mobile-search .search-results {
  position: relative; margin-top: 10px; max-height: 280px; overflow: auto;
  background: var(--card); border: 1px solid var(--line-2); border-radius: 12px; padding: 8px;
}

.nav-search { position: relative; display: flex; align-items: center; }
.search-btn {
  width: 40px; height: 40px; border-radius: 50%;
  border: 1px solid var(--line-2); background: rgba(255, 255, 255, 0.04);
  color: #cfd9e6; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: border-color 0.2s, background 0.2s, color 0.2s;
}
.search-btn svg { width: 17px; height: 17px; }
.search-btn:hover { border-color: var(--cyan); background: rgba(56, 189, 248, 0.08); color: #ffffff; }
.search-pop {
  position: absolute; right: 0; top: 50px;
  width: 320px;
  background: var(--card); border: 1px solid var(--line-2); border-radius: 12px;
  padding: 10px; display: none; box-shadow: 0 16px 40px rgba(0, 0, 0, 0.45);
}
.search-pop.open { display: block; }
.search-pop input {
  width: 100%; background: var(--bg-soft); border: 1px solid var(--line-2);
  border-radius: 8px; color: var(--text); padding: 10px 12px; font-size: 14px; outline: none;
}
.search-pop input:focus { border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.12); }
.search-results { display: none; margin-top: 8px; max-height: 300px; overflow: auto; }
.sr-item {
  display: flex; align-items: center; gap: 9px;
  padding: 9px 10px; border-radius: 8px;
  font-size: 13.5px; color: #d4e0ee; cursor: pointer;
}
.sr-item:hover { background: rgba(56, 189, 248, 0.08); color: #ffffff; }
.sr-kind {
  flex: none; font-size: 11px; color: var(--cyan);
  border: 1px solid var(--line); border-radius: 5px; padding: 1px 6px;
}
.sr-empty { padding: 10px; font-size: 13px; color: var(--faint); text-align: center; }

/* ---------------- 按钮 ---------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border-radius: 999px; padding: 13px 30px;
  font-size: 15px; font-weight: 700; cursor: pointer;
  transition: transform 0.15s, box-shadow 0.2s, border-color 0.2s;
  white-space: nowrap;
}
.btn .arr { font-size: 15px; }
.btn-primary {
  background: var(--grad); color: #062231;
  box-shadow: var(--shadow-glow);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 40px rgba(56, 189, 248, 0.26); }
.btn-ghost {
  border: 1px solid rgba(255, 255, 255, 0.20); color: var(--text);
  background: rgba(255, 255, 255, 0.03);
}
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); box-shadow: 0 0 14px rgba(56, 189, 248, 0.14); }
.btn-block { width: 100%; border-radius: 14px; padding: 15px 30px; }
.btn-email {
  border: 1px solid var(--line-2); color: var(--cyan);
  background: rgba(56, 189, 248, 0.08);
}
.btn-email:hover { transform: translateY(-2px); box-shadow: 0 0 16px rgba(56, 189, 248, 0.22); color: #fff; border-color: var(--cyan); }
.btn-email .icon { width: 16px; height: 16px; }

/* 段落防孤字：避免末行只挂 1~3 个字 */
.f-body p, .f-about, .dx-desc, .founder-card p { text-wrap: pretty; }

/* ---------------- 章节头（居中） ---------------- */
.section-head { text-align: center; margin-bottom: 54px; }
.kicker {
  display: block; color: var(--cyan); font-size: 13px; font-weight: 800;
  letter-spacing: 5px; text-transform: uppercase; margin-bottom: 14px;
}
.h2 { font-size: 42px; font-weight: 900; letter-spacing: 0.5px; line-height: 1.2; }
.section-head p { color: var(--muted); font-size: 15.5px; margin-top: 14px; text-wrap: pretty; }
/* 自测区标题：强制单行，避免换行（用户明确要求一行不折行） */
#selftest .section-head .h2 { white-space: nowrap; }


/* ---------------- Hero ---------------- */
.hero { padding: 96px 0 72px; }
.hero-grid { display: grid; grid-template-columns: 1.08fr 0.92fr; gap: 56px; align-items: center; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  border: 1px solid var(--line-2); border-radius: 999px;
  background: rgba(56, 189, 248, 0.06);
  color: var(--cyan); font-size: 13.5px; font-weight: 600;
  padding: 8px 18px; margin-bottom: 26px;
}
.hero-badge .icon { width: 15px; height: 15px; }
.hero h1 { font-size: 46px; font-weight: 900; line-height: 1.3; letter-spacing: 0.5px; }
.hero h1 .hl { display: block; }
.hero h1 .hl-accent { display: inline-block; margin-top: 8px; font-size: 30px; line-height: 1.25; letter-spacing: 0.5px; white-space: nowrap; }
.hero-sub { color: var(--muted); font-size: 16.5px; margin-top: 20px; text-wrap: pretty; }
.hero-strong { font-size: 17px; font-weight: 700; color: var(--text); margin-top: 10px; }
.hero-cta { display: flex; gap: 16px; margin-top: 34px; flex-wrap: wrap; }
.hero-note {
  display: flex; align-items: center; gap: 9px;
  color: var(--muted); font-size: 13.5px; margin-top: 28px;
}
.hero-note .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--cyan-2); box-shadow: 0 0 10px var(--cyan-2); }

/* Hero 售前热线（点击直接拨号，强化转化） */
.hero-hotline {
  display: inline-flex; align-items: center; gap: 10px;
  margin-top: 24px; padding: 12px 22px;
  border-radius: 999px;
  background: linear-gradient(150deg, rgba(56, 189, 248, 0.14), rgba(34, 211, 238, 0.08));
  border: 1px solid var(--line-2);
  color: var(--text); font-weight: 700; font-size: 16px;
  transition: transform 0.15s, box-shadow 0.2s, border-color 0.2s;
}
.hero-hotline:hover { transform: translateY(-2px); border-color: var(--cyan); box-shadow: 0 0 18px rgba(56, 189, 248, 0.20); color: #ffffff; }
.hero-hotline .icon { width: 20px; height: 20px; color: var(--cyan); }
.hero-hotline .hl-text { display: inline-flex; align-items: baseline; gap: 8px; }
.hero-hotline .hl-label { font-size: 13.5px; font-weight: 600; color: var(--muted); }
.hero-hotline .hl-num { font-size: 18px; font-weight: 800; letter-spacing: 0.5px; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* Hero 右侧诊断卡（柔和渐变描边） */
.diag-card {
  border: 1px solid transparent; border-radius: 20px;
  background: linear-gradient(160deg, rgba(56, 189, 248, 0.08), rgba(14, 26, 43, 0.72) 55%);
  box-shadow: 0 0 30px rgba(56, 189, 248, 0.06), inset 0 1px 0 rgba(255, 255, 255, 0.04);
  padding: 24px;
}
.diag-head {
  display: flex; align-items: center; gap: 10px;
  font-size: 15.5px; font-weight: 700; margin-bottom: 18px;
}
.diag-head .icon { width: 20px; height: 20px; color: var(--cyan-2); }
.diag-item {
  display: flex; gap: 14px; align-items: flex-start;
  background: rgba(14, 26, 43, 0.85);
  border: 1px solid transparent; border-radius: 12px;
  padding: 16px 18px; margin-bottom: 12px;
}
.diag-icon {
  flex: none; width: 44px; height: 44px; border-radius: 11px;
  background: linear-gradient(150deg, rgba(56, 189, 248, 0.18), rgba(34, 211, 238, 0.06));
  border: 1px solid var(--line-2);
  display: flex; align-items: center; justify-content: center; color: var(--cyan);
}
.diag-icon .icon { width: 20px; height: 20px; }
.diag-item .t { font-size: 15px; font-weight: 700; }
.diag-item .d { font-size: 12.5px; color: var(--muted); margin-top: 3px; }
.diag-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 16px; }
.diag-stat {
  background: rgba(14, 26, 43, 0.85); border: 1px solid var(--line);
  border-radius: 12px; text-align: center; padding: 16px 8px;
}
.diag-stat .num { font-size: 22px; font-weight: 800; color: var(--text); }
.diag-stat .num .u { color: var(--cyan); }
.diag-stat .lab { font-size: 12px; color: var(--muted); margin-top: 4px; white-space: nowrap; }

/* ---------------- 数据带（单卡分格） ---------------- */
.statband-sec { padding-top: 10px; }
.statband {
  display: grid; grid-template-columns: repeat(4, 1fr);
  background: rgba(16, 32, 58, 0.45);
  border: 1px solid transparent; border-radius: var(--radius);
  overflow: hidden;
}
.stat { text-align: center; padding: 38px 16px; border-left: 1px solid var(--line); }
.stat:first-child { border-left: none; }
.stat .num { font-size: 48px; font-weight: 900; line-height: 1.1; color: var(--text); }
.stat .num .u { color: var(--cyan); font-size: 40px; font-weight: 900; }
.stat .lab { color: var(--muted); font-size: 14px; margin-top: 8px; white-space: nowrap; }

/* ---------------- 关于 ---------------- */
.founder-card {
  display: flex; gap: 34px; align-items: flex-start;
  background: linear-gradient(150deg, rgba(56, 189, 248, 0.06), rgba(16, 32, 58, 0.5) 60%);
  border: 1px solid transparent; border-radius: 18px;
  padding: 36px 38px; margin-bottom: 26px;
}
.founder-card .photo {
  flex: none; width: 148px; height: 148px; border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--line-2);
  box-shadow: 0 0 22px rgba(56, 189, 248, 0.18);
  background: var(--card-2); padding: 4px;
}
.f-body .fname { font-size: 21px; font-weight: 800; margin-bottom: 8px; }
.f-body .fcred { color: var(--cyan); font-size: 14px; font-weight: 600; margin-bottom: 14px; }
.f-body p { color: var(--muted); font-size: 14.5px; line-height: 1.95; }
.engine-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.engine { padding: 28px 26px; }
.engine-icon {
  width: 48px; height: 48px; border-radius: 12px; padding: 12px;
  background: linear-gradient(150deg, rgba(56, 189, 248, 0.18), rgba(34, 211, 238, 0.06));
  border: 1px solid var(--line-2);
  color: var(--cyan);
  display: flex; align-items: center; justify-content: center;
}
.engine-icon .icon { width: 22px; height: 22px; }
.engine h4 { font-size: 17px; font-weight: 800; margin: 16px 0 10px; }
.engine p { color: var(--muted); font-size: 14px; line-height: 1.85; }

/* ---------------- 通用卡片 ---------------- */
.card {
  background: var(--card);
  border: 1px solid transparent;
  border-radius: var(--radius);
}

/* ---------------- 核心业务 ---------------- */
.svc-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.svc { padding: 28px 30px; display: flex; flex-direction: column; }
.svc-top { display: flex; gap: 16px; align-items: flex-start; margin-bottom: 18px; }
.svc-top .icon {
  width: 46px; height: 46px; border-radius: 12px; padding: 12px;
  background: linear-gradient(150deg, rgba(56, 189, 248, 0.18), rgba(34, 211, 238, 0.06));
  border: 1px solid var(--line-2);
  color: var(--cyan);
}
.svc h3 { font-size: 18px; font-weight: 800; }
.svc .sub { color: var(--muted); font-size: 13px; margin-top: 4px; }
.chips-label { color: var(--muted); font-size: 13px; margin-bottom: 10px; }
.chips { display: flex; flex-wrap: wrap; gap: 9px; margin-bottom: 14px; }
.chip {
  background: rgba(56, 189, 248, 0.09); border: 1px solid var(--line);
  border-radius: 9px; padding: 6px 14px; font-size: 13px; color: #d4e0ee;
}
.points { display: flex; flex-direction: column; gap: 12px; margin: 6px 0 8px; }
.point { display: flex; align-items: flex-start; gap: 12px; }
.pn {
  flex: none; width: 22px; height: 22px; border-radius: 50%;
  background: var(--grad); color: #062231;
  font-size: 12px; font-weight: 800;
  display: flex; align-items: center; justify-content: center; margin-top: 2px;
}
.pn.danger { background: linear-gradient(92deg, #f87171, #ef4444); color: #fff; }
.pt { font-size: 14.5px; color: #d4e0ee; }
.sniper {
  border: 1px solid var(--line-2); border-radius: 12px;
  background: rgba(56, 189, 248, 0.06);
  padding: 14px 18px; margin: 8px 0 6px;
}
.sniper .sp { color: var(--cyan); font-size: 17px; font-weight: 800; }
.sniper .sd { color: var(--muted); font-size: 12.5px; margin-top: 4px; }
.more-link {
  margin-top: auto; padding-top: 16px;
  color: var(--cyan); font-size: 14px; font-weight: 700;
  display: inline-flex; align-items: center; gap: 6px;
}
.more-link:hover { color: var(--cyan-2); text-shadow: 0 0 10px rgba(56, 189, 248, 0.3); }

/* ---------------- 年度会员 ---------------- */
.member-grid { display: grid; grid-template-columns: 0.92fr 1.08fr; gap: 26px; align-items: start; }
.member-card { border-radius: 18px; overflow: hidden; border: 1px solid transparent; background: var(--card); }
.m-head {
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.22), rgba(34, 211, 238, 0.08) 70%);
  border-bottom: 1px solid var(--line-2);
  padding: 26px 30px;
}
.m-head .ml { color: #cfe6fb; font-size: 14px; font-weight: 600; }
.m-head .mp { font-size: 52px; font-weight: 900; color: var(--text); margin-top: 8px; line-height: 1.15; }
.m-head .mp .per { font-size: 17px; font-weight: 600; color: var(--muted); margin-left: 6px; }
.m-head .mn { color: var(--muted); font-size: 13px; margin-top: 8px; }
.m-body { padding: 26px 30px 30px; display: flex; flex-direction: column; gap: 15px; }
.m-check { display: flex; align-items: flex-start; gap: 11px; font-size: 15px; font-weight: 600; color: #d4e0ee; }
.m-check .icon { margin-top: 3px; }
.m-body .btn { margin-top: 14px; }
.benefit-col { display: flex; flex-direction: column; gap: 16px; }
.benefit { display: flex; gap: 16px; align-items: flex-start; padding: 20px 22px; }
.benefit .bn {
  flex: none; width: 36px; height: 36px; border-radius: 10px;
  background: linear-gradient(150deg, rgba(56, 189, 248, 0.20), rgba(34, 211, 238, 0.08));
  border: 1px solid var(--line-2);
  color: var(--cyan); font-size: 15px; font-weight: 800;
  display: flex; align-items: center; justify-content: center;
}
.benefit .bt { font-size: 15.5px; font-weight: 700; }
.benefit .bd { color: var(--muted); font-size: 13px; margin-top: 5px; line-height: 1.75; }

/* ---------------- 客户墙 ---------------- */
.wall-more { text-align: center; margin-bottom: 34px; }
.wall { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.client-tag {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  background: rgba(16, 32, 58, 0.5); border: 1px solid transparent;
  border-radius: 11px; padding: 15px 17px;
  transition: transform 0.15s;
}
.client-tag:hover { transform: translateY(-2px); }
.client-tag .cn { font-size: 14.5px; font-weight: 700; color: var(--text); }
.client-tag .cc { font-size: 12px; color: var(--faint); white-space: nowrap; }
.client-groups { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.client-group {
  background: rgba(16, 32, 58, 0.45); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 24px;
}
.client-group h4 { color: var(--cyan); font-size: 15px; font-weight: 800; margin-bottom: 16px; }
.client-list { display: flex; flex-wrap: wrap; gap: 10px; }
.cases-link {
  display: inline-flex; margin-top: 30px;
  color: var(--cyan); font-size: 14.5px; font-weight: 700;
}

/* ---------------- 免费诊断 + 表单（双栏） ---------------- */
.dx-grid { display: grid; grid-template-columns: 1.04fr 0.96fr; gap: 44px; align-items: start; }
.dx-badge {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--cyan); font-size: 13.5px; font-weight: 700;
  letter-spacing: 1px; margin-bottom: 18px;
}
.dx-badge i { display: inline-block; width: 26px; height: 2px; background: var(--grad); border-radius: 2px; }
.dx-title { font-size: 42px; font-weight: 900; line-height: 1.3; margin-bottom: 18px; }
.dx-title .hl { display: block; }
.dx-desc { color: var(--muted); font-size: 14.5px; line-height: 1.9; margin-bottom: 26px; }
.dx-feats { display: flex; flex-direction: column; gap: 16px; margin-bottom: 30px; }
.dx-feat { display: flex; align-items: center; gap: 13px; font-size: 14.5px; color: #d4e0ee; }
.dx-feat .icon {
  width: 38px; height: 38px; border-radius: 10px; padding: 9px;
  background: linear-gradient(150deg, rgba(56, 189, 248, 0.18), rgba(34, 211, 238, 0.06));
  border: 1px solid var(--line-2);
  color: var(--cyan);
}
.qr-card {
  display: flex; gap: 20px; align-items: center;
  background: rgba(16, 32, 58, 0.5); border: 1px solid transparent;
  border-radius: 14px; padding: 20px 22px;
}
.qr-card img {
  flex: none; width: 108px; height: 108px;
  background: #fff; border-radius: 10px; padding: 6px;
}
.qr-card .qt { font-size: 15px; font-weight: 800; }
.qr-card .qd { color: var(--muted); font-size: 12.5px; margin-top: 5px; line-height: 1.7; }
.qr-card .qn { color: var(--cyan); font-size: 12.5px; font-weight: 600; margin-top: 7px; }
.dx-form { padding: 26px 28px; }
.df-head {
  display: flex; align-items: center; gap: 10px;
  font-size: 16.5px; font-weight: 800; margin-bottom: 16px;
}
.df-chips { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 20px; }
.form-chip {
  display: inline-flex; align-items: center; gap: 7px;
  border: 1px solid var(--line); border-radius: 999px;
  background: rgba(56, 189, 248, 0.06);
  color: #d4e0ee; font-size: 12.5px; padding: 7px 14px;
}
.dx-form input, .dx-form select, .dx-form textarea {
  width: 100%; background: var(--bg-soft);
  border: 1px solid var(--line); border-radius: 10px;
  color: var(--text); font-size: 14px;
  padding: 13px 15px; margin-bottom: 14px; outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.dx-form input::placeholder, .dx-form textarea::placeholder { color: var(--faint); }
.dx-form input:focus, .dx-form select:focus, .dx-form textarea:focus {
  border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.12);
}
.dx-form select { appearance: none; color: var(--faint); }
.dx-form select option { color: var(--text); background: var(--card); }
.dx-form textarea { min-height: 104px; resize: vertical; }
.dx-form .btn { margin-top: 4px; }
.form-msg { font-size: 13.5px; min-height: 20px; margin-top: 12px; text-align: center; }
.form-msg.ok { color: #34d399; }
.form-msg.err { color: #f87171; }

/* ---------------- 页脚 ---------------- */
.footer { border-top: 1px solid var(--line); margin-top: 30px; }
.footer-grid {
  display: grid; grid-template-columns: 1.25fr 0.8fr 1.2fr;
  gap: 48px; padding: 58px 0 44px;
}
.f-brand {
  font-size: 20px; font-weight: 800;
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.f-sub { color: var(--muted); font-size: 12px; letter-spacing: 0.5px; margin-top: 5px; }
.f-about { color: var(--muted); font-size: 13.5px; line-height: 1.9; margin-top: 16px; }
.footer h5 { font-size: 14px; font-weight: 800; margin-bottom: 18px; }
.f-links li { margin-bottom: 11px; }
.f-links a { color: var(--muted); font-size: 14px; transition: color 0.2s; }
.f-links a:hover { color: var(--cyan); text-shadow: 0 0 8px rgba(56, 189, 248, 0.25); }
.f-contacts { display: flex; flex-direction: column; gap: 13px; }
.c-row { display: flex; align-items: flex-start; gap: 10px; color: var(--muted); font-size: 13.5px; line-height: 1.65; }
.c-row .icon { margin-top: 2px; }
.c-link { display: inline-flex; align-items: flex-start; gap: 10px; color: var(--muted); transition: color .2s; }
.c-link:hover { color: var(--cyan); text-shadow: 0 0 8px rgba(56, 189, 248, 0.25); }
.f-gh {
  display: flex; gap: 14px; align-items: center;
  margin-top: 18px; padding: 14px 16px;
  background: rgba(16, 32, 58, 0.5);
  border: 1px solid rgba(56, 189, 248, 0.14);
  border-radius: 12px;
}
.f-gh img {
  flex: none; width: 84px; height: 84px;
  background: #fff; border-radius: 8px; padding: 5px;
}
.f-gh-t { font-size: 13.5px; font-weight: 800; }
.f-gh-d { color: var(--muted); font-size: 12px; margin-top: 5px; line-height: 1.6; }
.footer-bottom {
  border-top: 1px solid var(--line);
  text-align: center; padding: 18px 0;
  color: var(--faint); font-size: 13px;
}

/* ---------------- 渐变描边（柔和质感：淡渐变环，克制发光） ----------------
   双保险：实体 border 兜底（即使 mask 失效也可见）+ ::after 淡渐变环 */
.card, .diag-card, .founder-card, .member-card, .statband,
.client-tag, .engine, .qr-card, .sniper, .dx-form {
  position: relative;
  border-color: rgba(56, 189, 248, 0.14);
}
.card::after, .diag-card::after, .founder-card::after, .member-card::after,
.statband::after, .client-tag::after, .engine::after, .qr-card::after,
.sniper::after, .dx-form::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit;
  padding: 1px; background: linear-gradient(120deg, rgba(56, 189, 248, 0.50), rgba(34, 211, 238, 0.60) 55%, rgba(56, 189, 248, 0.50));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: 0.42; pointer-events: none; transition: opacity 0.25s;
}
.card:hover::after, .diag-card:hover::after, .founder-card:hover::after,
.member-card:hover::after, .statband:hover::after, .client-tag:hover::after,
.engine:hover::after, .qr-card:hover::after, .sniper:hover::after,
.dx-form:hover::after { opacity: 0.72; }
.card:hover, .diag-card:hover, .founder-card:hover,
.member-card:hover, .statband:hover, .client-tag:hover,
.engine:hover, .qr-card:hover, .sniper:hover,
.dx-form:hover {
  box-shadow: 0 0 18px rgba(56, 189, 248, 0.10);
}

/* ---------------- 实施路径（五步法 + 三档合作） ---------------- */
.step-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; margin-top: 6px; }
.mode-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 18px; }
.step .bn, .mode .bn { flex: none; width: 30px; height: 30px; font-size: 14px; }
.pathway-cta { margin-top: 24px; display: flex; justify-content: center; }

/* ---------------- 常驻悬浮 CTA（随时留资入口） ---------------- */
.float-cta {
  position: fixed; right: 26px; bottom: 26px; z-index: 200;
  display: inline-flex; align-items: center; gap: 9px;
  padding: 14px 22px; border-radius: 999px;
  background: var(--grad); color: #04121f; font-weight: 800; font-size: 15px;
  box-shadow: 0 10px 30px rgba(34, 211, 238, 0.30);
  transition: transform .2s, box-shadow .2s, opacity .25s;
}
.float-cta .icon { width: 19px; height: 19px; color: #04121f; }
.float-cta:hover { transform: translateY(-3px); box-shadow: 0 16px 40px rgba(34, 211, 238, 0.42); }
.float-cta.hidden { opacity: 0; pointer-events: none; transform: translateY(12px); }

/* ---------------- 表单：需求一键勾选 + 隐私承诺 ---------------- */
.need-label { font-size: 13px; color: var(--muted); margin: 4px 0 8px; }
.need-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 4px; }
.need-chip {
  border: 1px solid var(--line-2); background: rgba(56, 189, 248, 0.06);
  color: var(--text); border-radius: 10px; padding: 8px 13px; font-size: 13px;
  cursor: pointer; transition: all .18s;
}
.need-chip:hover { border-color: var(--cyan); background: rgba(56, 189, 248, 0.12); }
.need-chip.on { background: var(--grad); color: #04121f; border-color: transparent; font-weight: 700; }
.privacy { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--faint); margin-top: 4px; }
.privacy .icon { width: 14px; height: 14px; }

/* ---------------- 成熟度自测（互动钩子） ---------------- */
.st-grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: 40px; align-items: stretch; }
.st-desc { color: var(--muted); margin-top: 8px; }
.st-questions { margin-top: 22px; display: flex; flex-direction: column; gap: 16px; }
.st-q { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 18px 20px; }
.st-qt { font-size: 15.5px; font-weight: 600; margin-bottom: 12px; color: var(--text); }
.st-opts { display: flex; gap: 12px; }
.st-opt {
  flex: 1; border: 1px solid var(--line-2); background: rgba(56, 189, 248, 0.05);
  color: var(--text); border-radius: 10px; padding: 10px; font-size: 14px; cursor: pointer; transition: all .18s;
}
.st-opt:hover { border-color: var(--cyan); }
.st-opt.on { background: var(--grad); color: #04121f; border-color: transparent; font-weight: 700; }
.st-result { margin-top: 22px; padding: 20px 22px; border-radius: 14px; background: rgba(56, 189, 248, 0.07); border: 1px solid var(--line-2); }
.st-score { font-size: 17px; font-weight: 700; color: var(--cyan); margin-bottom: 8px; }
.st-score b { font-size: 22px; }
.st-result p { color: var(--text); font-size: 14px; margin-bottom: 16px; }

.st-right { padding: 28px 26px; display: flex; flex-direction: column; }
.st-r-head { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
.st-r-head .icon { width: 34px; height: 34px; border-radius: 9px; background: rgba(56, 189, 248, 0.12); border: 1px solid var(--line-2); color: var(--cyan); }
.st-r-head .t { font-weight: 800; font-size: 16px; }
.st-r-head .d { font-size: 13px; color: var(--muted); }
.st-r-list { display: flex; flex-direction: column; gap: 12px; flex: 1; justify-content: center; }
.st-r-list li { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--text); }
.st-r-qr { margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--line); display: flex; align-items: center; gap: 14px; }
.st-r-qr img { width: 86px; height: 86px; border-radius: 10px; background: #fff; padding: 5px; flex: none; }
.st-r-qr .t { font-size: 14px; font-weight: 800; }
.st-r-qr .d { font-size: 12.5px; color: var(--muted); margin-top: 4px; line-height: 1.65; }
.st-r-foot { margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--line); font-size: 12.5px; color: var(--faint); }

/* 自测留资（测完即领报告的转化钩子） */
.st-lead { margin-top: 16px; padding: 16px 18px; border-radius: 12px; background: var(--card); border: 1px solid var(--line-2); }
.st-lead-t { font-size: 14.5px; font-weight: 800; margin-bottom: 12px; display: flex; align-items: center; gap: 8px; }
.st-lead-t .icon { color: var(--cyan); }
.st-lead form { display: grid; grid-template-columns: 1fr 1.2fr 1.6fr auto; gap: 10px; }
.st-lead input {
  background: var(--bg-2, rgba(10, 20, 34, 0.6)); border: 1px solid var(--line-2); border-radius: 10px;
  padding: 10px 12px; color: var(--text); font-size: 13.5px; min-width: 0;
}
.st-lead input::placeholder { color: var(--faint); }
.st-lead input:focus { outline: none; border-color: var(--cyan); }
.st-lead .btn { white-space: nowrap; }
.st-lead-note { font-size: 12px; color: var(--faint); margin-top: 10px; line-height: 1.7; }
.st-lead-note a { color: var(--cyan); }

/* ---------------- 响应式 ---------------- */
@media (max-width: 1024px) {
  .st-grid { grid-template-columns: 1fr; gap: 28px; }
  .st-lead form { grid-template-columns: 1fr 1fr; }
  .st-lead form .btn { grid-column: 1 / -1; }
  .hero-grid, .dx-grid { grid-template-columns: 1fr; gap: 40px; }
  .member-grid { grid-template-columns: 1fr; }
  .engine-grid { grid-template-columns: 1fr; }
  .step-grid { grid-template-columns: 1fr 1fr; }
  .mode-grid { grid-template-columns: 1fr; }
  .wall { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* 平板及以下：隐藏横排导航，启用汉堡抽屉 */
@media (max-width: 860px) {
  .nav-toggle { display: flex; }
  .nav-links { display: none; }
}

@media (max-width: 720px) {
  .container { padding: 0 18px; }
  .section { padding: 56px 0; }
  .hero { padding: 64px 0 48px; }
  .hero h1 { font-size: 32px; }
  .hero h1 .hl-accent { font-size: 20px; }
  .dx-title { font-size: 28px; }
  .h2 { font-size: 27px; }
  .statband { grid-template-columns: repeat(2, 1fr); }
  .stat .num { font-size: 40px; }
  .stat .num .u { font-size: 34px; }
  .stat:nth-child(3) { border-left: none; }
  .stat:nth-child(n+3) { border-top: 1px solid var(--line); }
  .svc-grid { grid-template-columns: 1fr; }
  .step-grid { grid-template-columns: 1fr; }
  .wall { grid-template-columns: repeat(2, 1fr); }
  .client-groups { grid-template-columns: 1fr; }
  .founder-card { flex-direction: column; align-items: center; text-align: center; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .float-cta { right: 16px; bottom: 16px; padding: 12px 18px; font-size: 14px; }
  .st-opts { flex-direction: column; }
  .qr-card { flex-direction: column; text-align: center; }
  .qr-card img { width: 120px; height: 120px; }
}

/* 小屏手机：进一步收紧，杜绝横向溢出 */
@media (max-width: 480px) {
  .container { padding: 0 15px; }
  .section { padding: 44px 0; }
  .hero { padding: 52px 0 40px; }
  .hero h1 { font-size: 27px; line-height: 1.32; }
  .hero h1 .hl-accent { font-size: 17px; white-space: normal; }
  .hero-cta { flex-direction: column; align-items: stretch; }
  .hero-cta .btn { width: 100%; }
  .dx-title { font-size: 24px; }
  .h2 { font-size: 23px; }
  #selftest .section-head .h2 { white-space: normal; }
  .section-head { margin-bottom: 36px; }
  .kicker { letter-spacing: 3px; font-size: 12px; }
  .founder-card { padding: 24px 20px; }
  .founder-card .photo { width: 116px; height: 116px; }
  .svc, .engine, .benefit { padding: 22px 20px; }
  .diag-stats { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .diag-stat { padding: 12px 4px; }
  .stat .num { font-size: 34px; }
  .stat .num .u { font-size: 28px; }
  .f-contacts { gap: 10px; }
  .float-cta { right: 12px; bottom: 12px; padding: 11px 15px; font-size: 13px; }
  .float-cta span { display: none; }
  .float-cta::after { content: "预约"; }
  .hero-hotline { width: 100%; justify-content: center; margin-top: 22px; padding: 13px 18px; }
  .hero-hotline .hl-label { font-size: 13px; }
  .hero-hotline .hl-num { font-size: 16px; }
}

/* ============ 博客 / 行业洞察文章页 ============ */
.blog { max-width: 820px; margin: 0 auto; padding: 40px 22px 80px; }
.blog-back { display: inline-block; color: var(--cyan); text-decoration: none; font-size: 14px; margin-bottom: 18px; }
.post h1 { font-size: 30px; line-height: 1.35; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; margin-bottom: 10px; }
.post-meta { color: var(--muted); font-size: 13px; margin-bottom: 26px; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.post h2 { font-size: 21px; margin: 30px 0 12px; color: #fff; }
.post p { margin: 12px 0; color: #d7e2ee; }
.post ul { margin: 12px 0 12px 22px; }
.post li { margin: 6px 0; }
.post blockquote { margin: 16px 0; padding: 12px 16px; border-left: 3px solid var(--cyan); background: rgba(56,189,248,.08); color: var(--muted); border-radius: 8px; }
.post-cta { display: flex; gap: 14px; flex-wrap: wrap; margin: 34px 0; padding: 22px; border: 1px solid var(--line); border-radius: 14px; background: linear-gradient(100deg, rgba(56,189,248,.08), rgba(34,211,238,.06)); }
.post-cta a { flex: 1; min-width: 200px; text-align: center; padding: 13px 16px; border-radius: 10px; text-decoration: none; font-weight: 700; color: #06121f; background: var(--grad); }
.faq { margin-top: 36px; padding-top: 22px; border-top: 1px solid var(--line); }
.faq h2 { font-size: 22px; margin-bottom: 14px; }
.faq details { margin: 10px 0; padding: 12px 16px; border: 1px solid var(--line); border-radius: 10px; background: var(--card); }
.faq summary { cursor: pointer; font-weight: 700; color: #fff; }
.faq p { margin: 10px 0 2px; color: #d7e2ee; }
.related { margin-top: 38px; }
.related h3 { font-size: 18px; margin-bottom: 12px; }
.related a { display: block; color: var(--cyan); text-decoration: none; padding: 8px 0; border-bottom: 1px solid var(--line); }
.post-card { display: block; text-decoration: none; padding: 18px 20px; margin: 12px 0; border: 1px solid var(--line); border-radius: 14px; background: var(--card); transition: .18s; }
.post-card:hover { border-color: var(--cyan); }
.pc-t { font-size: 18px; font-weight: 700; color: #fff; margin-bottom: 6px; }
.pc-d { font-size: 14px; color: var(--muted); }