/* 工蚁 Worker Ant · 落地页样式
   无构建步骤、无外部依赖（字体走系统栈，离线可用）。 */

:root {
  --bg:        #faf8f5;
  --bg-alt:    #f3efe9;
  --surface:   #ffffff;
  --text:      #1c1917;
  --text-soft: #57534e;
  --text-mute: #8a827a;
  --line:      #e5ded4;
  --accent:    #b45309;
  --accent-in: #d97706;
  --accent-bg: #fdf3e3;
  --ok:        #15803d;
  --ok-bg:     #ecfdf3;
  --radius:    14px;
  --wrap:      1060px;
  --shadow:    0 1px 2px rgba(28, 25, 23, .05), 0 8px 24px -12px rgba(28, 25, 23, .18);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:        #171513;
    --bg-alt:    #1e1b18;
    --surface:   #232019;
    --text:      #f5f2ee;
    --text-soft: #c4bdb4;
    --text-mute: #948b81;
    --line:      #35302a;
    --accent:    #f0a94a;
    --accent-in: #f5c073;
    --accent-bg: #2c2318;
    --ok:        #6ee7a8;
    --ok-bg:     #14261c;
    --shadow:    0 1px 2px rgba(0, 0, 0, .4), 0 12px 32px -16px rgba(0, 0, 0, .7);
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 76px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
               "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-wrap: break-word;
}

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

h1, h2, h3, h4 { line-height: 1.3; letter-spacing: -.01em; margin: 0; }
h1 { font-size: clamp(1.75rem, 4.2vw, 2.9rem); font-weight: 800; }
h2 { font-size: clamp(1.35rem, 2.8vw, 1.9rem); font-weight: 700; margin-bottom: 28px; }
h3 { font-size: 1.06rem; font-weight: 700; }
strong { font-weight: 700; }
code { font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace; font-size: .9em; }

/* ---------- 导航 ---------- */
.nav {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; gap: 20px; height: 62px; }
.brand { display: flex; align-items: center; gap: 9px; color: var(--text); font-weight: 800; }
.brand:hover { text-decoration: none; }
/* 品牌标 = 应用图标本尊（白底 3D 工蚁，不透明）。圆角 + 细边让它贴住页面而不显成一块白斑。 */
.brand-mark { width: 26px; height: 26px; border-radius: 6px; box-shadow: 0 0 0 1px var(--line); flex: none; }
.brand-text em { font-style: normal; font-weight: 500; color: var(--text-mute); font-size: .85em; }
.nav-links { display: flex; gap: 22px; margin-left: auto; font-size: .92rem; }
.nav-links a { color: var(--text-soft); }
.nav-links a:hover { color: var(--accent); }
.nav-cta { flex: none; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  height: 42px; padding: 0 20px; border-radius: 10px;
  font-size: .95rem; font-weight: 600; white-space: nowrap;
  border: 1px solid transparent; cursor: pointer; transition: .16s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--accent); color: #fff; box-shadow: var(--shadow); }
.btn-primary:hover { background: var(--accent-in); }
.btn-secondary { background: var(--surface); color: var(--text); border-color: var(--line); }
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }
.btn-ghost { height: 36px; padding: 0 15px; background: transparent; color: var(--text-soft); border-color: var(--line); font-size: .9rem; }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-disabled { background: transparent; border: 1px dashed var(--line); color: var(--text-mute); cursor: not-allowed; transform: none !important; }

/* ---------- Hero ---------- */
.hero { padding: clamp(48px, 9vw, 96px) 0 clamp(40px, 6vw, 72px); text-align: center; }
.eyebrow {
  display: inline-block; margin: 0 0 20px; padding: 5px 14px; border-radius: 999px;
  background: var(--accent-bg); color: var(--accent);
  font-size: .82rem; font-weight: 600; letter-spacing: .01em;
}
.hero h1 { margin-bottom: 22px; }
.lede { max-width: 720px; margin: 0 auto; font-size: clamp(1rem, 1.6vw, 1.14rem); color: var(--text-soft); }
.hero-tag { margin: 14px auto 0; font-size: 1.02rem; font-weight: 700; }
.hero-en { margin: 10px auto 0; color: var(--text-mute); font-size: .9rem; font-style: italic; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin-top: 32px; }
.trust { margin-top: 20px; color: var(--text-mute); font-size: .87rem; }

/* ---------- 区块 ---------- */
.band { padding: clamp(48px, 7vw, 78px) 0; }
.band-alt { background: var(--bg-alt); }
.band-foot { margin-top: 26px; font-size: 1.06rem; color: var(--text-soft); }
.note { margin-top: 22px; color: var(--text-mute); font-size: .89rem; }

/* ---------- 痛点 ---------- */
.pain { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.pain li {
  display: grid; grid-template-columns: 1fr 1fr; gap: 24px;
  padding: 18px 0; border-bottom: 1px solid var(--line);
}
.pain-k { font-weight: 600; }
.pain-v { color: var(--text-mute); font-size: .95rem; }

/* ---------- 卡片 ---------- */
.cards-3, .cards-2 { display: grid; gap: 20px; }
.cards-3 { grid-template-columns: repeat(3, 1fr); }
.cards-2 { grid-template-columns: repeat(2, 1fr); }
.card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 26px 24px; box-shadow: var(--shadow);
}
.card h3 { margin-bottom: 14px; }
.card p { margin: 0 0 10px; color: var(--text-soft); font-size: .95rem; }
.card p:last-child { margin-bottom: 0; }
.card-use .quote { font-size: 1rem; color: var(--text); font-weight: 500; }
.card-use .out { margin: 0; color: var(--accent); font-weight: 600; font-size: .95rem; }

/* ---------- 三步 ---------- */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; counter-reset: s; }
.steps li { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 24px; }
.step-n { display: block; font-size: 1.6rem; color: var(--accent-in); margin-bottom: 6px; }
.steps h3 { margin-bottom: 8px; }
.steps p { margin: 0; color: var(--text-soft); font-size: .95rem; }

/* ---------- 快速开始 ---------- */
.start-grid { display: grid; grid-template-columns: 1fr 1.35fr; gap: 22px; align-items: start; }
/* min-width:0 —— grid 子项默认 min-width:auto，会被内部的长命令撑破整列（手机端横向溢出 615px）。 */
.start-grid > * { min-width: 0; }
.start-col { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 24px; }
.start-col-primary { border-color: var(--accent); }
.start-col h3 { margin-bottom: 14px; }
.muted { color: var(--text-soft); font-size: .93rem; }
.code {
  position: relative; margin: 14px 0; max-width: 100%;
  background: #1c1917; color: #f0ece6;
  border-radius: 10px; padding: 16px 16px; overflow-x: auto;
  font-size: .84rem; line-height: 1.8;
  -webkit-overflow-scrolling: touch;
}
.code code { white-space: pre; }
.copy {
  position: absolute; top: 8px; right: 8px;
  background: rgba(255,255,255,.12); color: #f0ece6;
  border: 1px solid rgba(255,255,255,.2); border-radius: 6px;
  padding: 3px 10px; font-size: .75rem; cursor: pointer; font-family: inherit;
}
.copy:hover { background: rgba(255,255,255,.22); }

/* ---------- 表格 ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
table { width: 100%; border-collapse: collapse; font-size: .94rem; }
th, td { padding: 14px 18px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); }
thead th { background: var(--bg-alt); font-size: .87rem; color: var(--text-soft); font-weight: 600; white-space: nowrap; }
tbody tr:last-child td { border-bottom: 0; }
.compare td:first-child { white-space: nowrap; font-weight: 500; }
.pricing td:nth-child(2) { white-space: nowrap; }
/* 窄屏下让表格保持可读的自然宽度、由 .table-wrap 横向滚动，而不是把列挤成一字一行。 */
.compare { min-width: 640px; }
.pricing { min-width: 560px; }
.row-now { background: var(--accent-bg); }

/* ---------- 标签 ---------- */
.tag {
  display: inline-block; margin-left: 6px; padding: 1px 8px; border-radius: 999px;
  background: var(--bg-alt); border: 1px solid var(--line);
  color: var(--text-mute); font-size: .75rem; font-weight: 600; white-space: nowrap;
}
.tag-ok { background: var(--ok-bg); border-color: transparent; color: var(--ok); }

/* ---------- FAQ ---------- */
.faq { display: grid; gap: 10px; }
.faq details {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 11px; padding: 2px 20px;
}
.faq summary { cursor: pointer; font-weight: 600; padding: 15px 0; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "＋"; float: right; color: var(--accent); font-weight: 400; }
.faq details[open] summary::after { content: "－"; }
.faq details p { margin: 0 0 16px; color: var(--text-soft); font-size: .95rem; }

/* ---------- 页脚 ---------- */
.foot { background: var(--bg-alt); border-top: 1px solid var(--line); padding: 48px 0 32px; }
.foot-inner { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; max-width: 760px; margin-bottom: 36px; }
.foot-col h4 { font-size: .84rem; color: var(--text-mute); text-transform: uppercase; letter-spacing: .06em; margin-bottom: 12px; }
.foot-col a { display: block; color: var(--text-soft); font-size: .93rem; padding: 3px 0; }
.foot-base { border-top: 1px solid var(--line); padding-top: 22px; }
.foot-slogan { margin: 0; font-weight: 600; }
.foot-copy { margin: 6px 0 0; color: var(--text-mute); font-size: .84rem; }

/* ---------- 响应式 ---------- */
@media (max-width: 860px) {
  .cards-3, .steps { grid-template-columns: 1fr; }
  .start-grid { grid-template-columns: 1fr; }
  .nav-links { display: none; }
}
@media (max-width: 620px) {
  .cards-2 { grid-template-columns: 1fr; }
  .pain li { grid-template-columns: 1fr; gap: 4px; }
  .foot-inner { grid-template-columns: 1fr 1fr; }
  .br-mobile { display: none; }
  .cta-row .btn { flex: 1 1 100%; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn { transition: none; }
  .btn:hover { transform: none; }
}