/* 驯狐智能 FoxTaming — 公司主页样式
   设计语言对齐「狐狸大模型平台」控制台：白底 / 宝蓝主色 / 圆角卡片 / 深浅双主题 */

:root {
  --primary: oklch(0.692 0.141 243.716);
  --primary-strong: oklch(0.585 0.165 250);
  --primary-weak: color-mix(in oklch, var(--primary) 12%, var(--background));
  --fox: #f97316;
  --fox-deep: #ea580c;
  --bg: oklch(1 0 0);
  --bg-soft: oklch(0.975 0.002 247);
  --card: oklch(1 0 0);
  --fg: oklch(0.145 0 0);
  --fg-muted: oklch(0.49 0 0);
  --border: oklch(0.92 0.004 247);
  --shadow: 0 1px 2px rgb(16 24 40 / 0.04), 0 12px 32px -16px rgb(16 24 40 / 0.12);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) {
    --primary: oklch(0.692 0.141 243.716);
    --primary-strong: oklch(0.75 0.14 245);
    --bg: oklch(0.165 0.012 250);
    --bg-soft: oklch(0.2 0.012 250);
    --card: oklch(0.21 0.012 250);
    --fg: oklch(0.96 0.005 250);
    --fg-muted: oklch(0.71 0.01 250);
    --border: oklch(0.3 0.012 250);
    --shadow: 0 1px 2px rgb(0 0 0 / 0.3), 0 12px 32px -16px rgb(0 0 0 / 0.5);
    color-scheme: dark;
  }
}

:root[data-theme='dark'] {
  --primary: oklch(0.692 0.141 243.716);
  --primary-strong: oklch(0.75 0.14 245);
  --bg: oklch(0.165 0.012 250);
  --bg-soft: oklch(0.2 0.012 250);
  --card: oklch(0.21 0.012 250);
  --fg: oklch(0.96 0.005 250);
  --fg-muted: oklch(0.71 0.01 250);
  --border: oklch(0.3 0.012 250);
  --shadow: 0 1px 2px rgb(0 0 0 / 0.3), 0 12px 32px -16px rgb(0 0 0 / 0.5);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto,
    'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; }
a { color: inherit; text-decoration: none; }

.container { max-width: 1080px; margin: 0 auto; padding-inline: 24px; }

/* ---------- 顶栏 ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in oklch, var(--bg) 82%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner { display: flex; align-items: center; gap: 28px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: -0.01em; }
.brand .fox { width: 34px; height: 34px; }
.brand small { display: inline; font-size: 11px; font-weight: 500; color: var(--fg-muted); letter-spacing: 0.08em; margin-left: 9px; padding-left: 9px; border-left: 1px solid var(--border); }
.nav-links { display: flex; gap: 22px; margin-left: auto; font-size: 14.5px; color: var(--fg-muted); }
.nav-links > a { display: inline-flex; align-items: center; }
.nav-links a:hover { color: var(--fg); }
.theme-btn {
  border: 1px solid var(--border); background: var(--card); color: var(--fg-muted);
  width: 34px; height: 34px; border-radius: 10px; cursor: pointer; font-size: 15px;
}
@media (max-width: 720px) { .nav-links { display: none; } }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  padding: 96px 0 72px;
  background:
    radial-gradient(60% 90% at 18% 0%, color-mix(in oklch, var(--primary) 9%, transparent) 0%, transparent 60%),
    radial-gradient(45% 80% at 92% 12%, color-mix(in oklch, var(--fox) 8%, transparent) 0%, transparent 60%);
}
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 600; letter-spacing: 0.06em;
  color: var(--primary-strong);
  background: var(--primary-weak);
  border: 1px solid color-mix(in oklch, var(--primary) 22%, transparent);
  padding: 5px 14px; border-radius: 999px;
}
h1 { font-size: clamp(30px, 5vw, 52px); line-height: 1.22; letter-spacing: -0.02em; margin: 22px 0 0; }
h1 .grad { background: linear-gradient(92deg, var(--primary) 10%, var(--fox) 90%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p.lead { font-size: clamp(16px, 2.2vw, 19px); color: var(--fg-muted); max-width: 640px; margin: 20px 0 0; }
.hero p.motto { margin: 18px 0 0; font-size: clamp(17px, 2.4vw, 21px); font-weight: 650; letter-spacing: 0.02em; color: var(--fox-deep); }
.cta-row { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 26px; border-radius: 14px; font-size: 15px; font-weight: 600; border: 1px solid transparent; }
.btn-primary { background: var(--primary); color: #fff; box-shadow: var(--shadow); }
.btn-primary:hover { background: var(--primary-strong); }
.btn-ghost { border-color: var(--border); background: var(--card); color: var(--fg); }
.btn-ghost:hover { border-color: var(--primary); color: var(--primary-strong); }

/* ---------- 通用 section ---------- */
section { padding: 72px 0; }
section.alt { background: var(--bg-soft); border-block: 1px solid var(--border); }
.sec-head { max-width: 660px; margin-bottom: 40px; }
.sec-head h2 { font-size: clamp(24px, 3.4vw, 34px); letter-spacing: -0.015em; margin: 0 0 10px; }
.sec-head p { color: var(--fg-muted); margin: 0; }
.kicker { font-size: 13px; font-weight: 700; letter-spacing: 0.14em; color: var(--primary-strong); text-transform: uppercase; }

/* ---------- 产品卡片 ---------- */
.grid { display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: 20px;
  padding: 26px 24px; box-shadow: var(--shadow);
  transition: transform 0.18s ease, border-color 0.18s ease;
}
.card:hover { transform: translateY(-3px); border-color: color-mix(in oklch, var(--primary) 45%, var(--border)); }
.card .icon { width: 44px; height: 44px; border-radius: 13px; display: grid; place-items: center; font-size: 21px; margin-bottom: 16px; color: #fff; }
.icon.i-blue { background: linear-gradient(135deg, var(--primary), var(--primary-strong)); }
.icon.i-orange { background: linear-gradient(135deg, var(--fox), var(--fox-deep)); }
.icon.i-violet { background: linear-gradient(135deg, oklch(0.62 0.19 295), oklch(0.5 0.2 295)); }
.card h3 { margin: 0 0 4px; font-size: 19px; letter-spacing: -0.01em; }
.card .en { font-size: 12.5px; color: var(--fg-muted); letter-spacing: 0.04em; margin-bottom: 12px; }
.card p { margin: 0; font-size: 14.5px; color: var(--fg-muted); }
.badge { float: right; font-size: 11.5px; font-weight: 600; padding: 3px 10px; border-radius: 999px; }
.badge.live { color: oklch(0.55 0.15 152); background: color-mix(in oklch, oklch(0.6 0.15 152) 14%, transparent); border: 1px solid color-mix(in oklch, oklch(0.6 0.15 152) 35%, transparent); }
.badge.soon { color: var(--fox-deep); background: color-mix(in oklch, var(--fox) 12%, transparent); border: 1px solid color-mix(in oklch, var(--fox) 35%, transparent); }

/* ---------- 跨主页链接 / 数据 / 步骤 ---------- */
.home-link { display: inline-flex; align-items: center; gap: 5px; font-size: 14px; font-weight: 650; color: var(--primary-strong); border-bottom: 1px solid color-mix(in oklch, var(--primary) 40%, transparent); padding-bottom: 1px; }
.home-link:hover { color: var(--primary); border-bottom-color: var(--primary); }
.stat-row { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 18px; }
.stat { flex: 1 1 140px; background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 14px 16px; box-shadow: var(--shadow); }
.stat b { display: block; font-size: 26px; line-height: 1.2; letter-spacing: -0.02em; color: var(--primary-strong); }
.stat span { font-size: 12.5px; color: var(--fg-muted); }
.steps { list-style: none; counter-reset: st; display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 14px; margin: 0; padding: 0; }
.steps li { counter-increment: st; background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 18px 16px; box-shadow: var(--shadow); }
.steps li::before { content: "0" counter(st); display: block; font-size: 13px; font-weight: 800; letter-spacing: 0.08em; color: var(--fox-deep); margin-bottom: 6px; }
.steps b { display: block; font-size: 15.5px; margin-bottom: 3px; }
.steps span { font-size: 13px; color: var(--fg-muted); line-height: 1.55; }

/* ---------- 产品详情 ---------- */
.feature-row { display: grid; grid-template-columns: 300px 1fr; gap: 40px; padding: 36px 0; border-top: 1px solid var(--border); align-items: start; }
.feature-row:first-of-type { border-top: 0; padding-top: 8px; }
.feature-row h3 { margin: 2px 0 6px; font-size: 22px; letter-spacing: -0.01em; }
.feature-row .sub { color: var(--fg-muted); font-size: 14.5px; margin: 0; }
.feat-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.feat-list li { display: flex; gap: 11px; font-size: 15px; }
.feat-list .tick { flex: none; width: 21px; height: 21px; margin-top: 3px; border-radius: 7px; display: grid; place-items: center; background: var(--primary-weak); color: var(--primary-strong); font-size: 12px; font-weight: 800; }
.feat-list b { font-weight: 650; }
.feat-list span.d { display: block; font-size: 13.5px; color: var(--fg-muted); line-height: 1.55; }
@media (max-width: 820px) { .feature-row { grid-template-columns: 1fr; gap: 14px; } }

/* ---------- 能力 chips ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chip { font-size: 13.5px; font-weight: 550; padding: 8px 16px; border-radius: 999px; background: var(--card); border: 1px solid var(--border); color: var(--fg-muted); }
.chip:hover { border-color: var(--primary); color: var(--primary-strong); }

/* ---------- 联系 ---------- */
.contact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 18px; }
.contact-card { display: flex; gap: 14px; align-items: center; background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 18px; }
.contact-card .ci { flex: none; width: 40px; height: 40px; border-radius: 12px; background: var(--primary-weak); color: var(--primary-strong); display: grid; place-items: center; font-size: 17px; }
.contact-card small { display: block; color: var(--fg-muted); font-size: 12px; }
.contact-card div { font-size: 15px; font-weight: 600; word-break: break-all; }

/* ---------- 页脚 ---------- */
footer { border-top: 1px solid var(--border); padding: 30px 0 38px; color: var(--fg-muted); font-size: 13.5px; }
.foot { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; justify-content: space-between; }
.foot .links { display: flex; gap: 18px; }
.foot-brand { display: flex; align-items: center; gap: 12px; }
.foot-brand .fox { width: 40px; height: 40px; }
.foot-brand b { display: block; font-size: 15.5px; color: var(--fg); letter-spacing: -0.01em; }
.foot-brand b small { display: block; font-size: 10.5px; font-weight: 500; color: var(--fg-muted); letter-spacing: 0.09em; margin-top: 1px; }
.foot-brand p { margin: 2px 0 0; font-size: 12px; color: var(--fox-deep); font-weight: 550; }
.foot-copy { text-align: center; margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--border); font-size: 12.5px; letter-spacing: 0.04em; }
@media (max-width: 720px) { .foot { flex-direction: column; } .fx-row { margin-top: 6px; } }

/* ---------- 页脚下拉菜单 ---------- */
.fx-row { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.fx-d { position: relative; }
.fx-d summary {
  list-style: none; cursor: pointer; user-select: none;
  padding: 7px 18px; border-radius: 999px;
  border: 1px solid var(--border); background: var(--card); color: var(--fg);
  font-weight: 600; font-size: 12.5px; letter-spacing: 0.05em;
  transition: border-color 0.18s ease, color 0.18s ease, box-shadow 0.18s ease;
}
.fx-d summary::-webkit-details-marker { display: none; }
.fx-d summary:focus { outline: none; }
.fx-d summary:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.fx-d summary::after { content: '▾'; margin-left: 7px; font-size: 10px; opacity: 0.55; }
.fx-d summary:hover, .fx-d[open] summary {
  border-color: var(--primary); color: var(--primary-strong);
  box-shadow: 0 4px 18px -8px color-mix(in oklch, var(--primary) 55%, transparent);
}
.fx-menu {
  position: absolute; left: 50%; bottom: calc(100% + 10px);
  transform: translateX(-50%);
  min-width: 210px; display: flex; flex-direction: column; gap: 2px;
  padding: 8px; border-radius: 14px;
  border: 1px solid var(--border); background: var(--card); color: var(--fg);
  box-shadow: var(--shadow), 0 16px 40px -14px rgb(16 24 40 / 0.28);
  z-index: 60; animation: fxin 0.16s ease;
}
@keyframes fxin {
  from { opacity: 0; transform: translateX(-50%) translateY(6px); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}
.fx-menu a {
  padding: 7px 11px; border-radius: 9px; font-size: 13px;
  color: inherit; text-decoration: none; white-space: nowrap;
  transition: background 0.15s ease, color 0.15s ease;
}
.fx-menu a:hover { background: var(--primary-weak); color: var(--primary-strong); }

/* ---------- 顶栏下拉菜单（向下弹出、融入导航文字风格） ---------- */
.fx-d.top summary {
  display: inline-flex; align-items: center; gap: 7px;
  border: 0; background: transparent; padding: 6px 2px;
  font-size: 14.5px; font-weight: inherit; letter-spacing: 0;
  color: var(--fg-muted); outline: none;
  transition: color 0.18s ease;
}
.fx-d.top summary::after {
  content: ''; margin: 0; font-size: 0;
  width: 0; height: 0; flex: none;
  border-left: 4.5px solid transparent; border-right: 4.5px solid transparent;
  border-top: 5px solid currentColor;
  opacity: 0.45; transition: transform 0.18s ease, opacity 0.18s ease;
}
.fx-d.top[open] summary::after { transform: rotate(180deg); opacity: 0.8; }
.fx-d.top summary:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; border-radius: 6px; }
.fx-d.top:hover summary, .fx-d.top[open] summary { color: var(--fg); border: 0; box-shadow: none; background: transparent; }
.fx-d.top[open] summary { color: var(--primary-strong); }
.nav-links .fx-d .fx-menu {
  bottom: auto; top: calc(100% + 10px);
  animation: fxin-top 0.16s ease;
}
@keyframes fxin-top {
  from { opacity: 0; transform: translateX(-50%) translateY(-6px); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* ---------- 联系方式细节：邮箱不折行 ---------- */
.contact-card a { font-size: 13.5px; word-break: normal; overflow-wrap: anywhere; }
@media (min-width: 720px) { .contact-card > div > a { white-space: nowrap; } }

#inquiryForm { scroll-margin-top: 104px; }