/* 赛勘 Lab · 官网样式
   设计语言沿用 SeqKan 站：浅灰底 + 白色卡片 + 圆角 + sticky 毛玻璃导航
   品牌色改为青绿 Teal */

:root {
  --bg: #f5f6f7;
  --card: #ffffff;
  --ink: #12181b;
  --ink-2: #45535a;
  --sub: #7c8a91;
  --line: #e9edef;
  --line-2: #dfe5e8;

  --teal: #0fa3a0;
  --teal-d: #0a8583;
  --teal-dd: #076b69;
  --teal-soft: #e6f7f5;
  --teal-soft-2: #d3f0ed;
  --lime: #b9f2c8;

  --radius: 12px;
  --radius-lg: 18px;
  --shadow-s: 0 1px 2px rgba(18, 24, 27, .04);
  --shadow-m: 0 8px 24px -12px rgba(18, 24, 27, .16);
  --shadow-l: 0 26px 60px -26px rgba(9, 74, 72, .38);

  --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
  --mono: ui-monospace, "SFMono-Regular", "JetBrains Mono", Consolas, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scrollbar-gutter: stable; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.65 var(--font);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { margin: 0; font-weight: 700; letter-spacing: -.2px; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
img { display: block; }

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 20px; }

/* ================= 按钮 ================= */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 38px; padding: 0 18px;
  border-radius: 9px;
  font-size: 14px; font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background .18s, color .18s, border-color .18s, transform .18s, box-shadow .18s;
  white-space: nowrap;
}
.btn-lg { height: 46px; padding: 0 24px; font-size: 15px; border-radius: 11px; }
.btn-primary {
  background: linear-gradient(180deg, #12b3af, var(--teal));
  color: #fff;
  box-shadow: 0 10px 22px -12px rgba(15, 163, 160, .85);
}
.btn-primary:hover { background: linear-gradient(180deg, var(--teal), var(--teal-d)); transform: translateY(-1px); }
.btn-line { border-color: var(--line-2); color: var(--ink-2); background: #fff; }
.btn-line:hover { border-color: var(--teal); color: var(--teal-d); }
.btn-ghost { color: var(--ink-2); }
.btn-ghost:hover { color: var(--teal-d); }
.btn-white { background: #fff; color: var(--teal-dd); box-shadow: 0 10px 24px -14px rgba(0, 0, 0, .5); }
.btn-white:hover { transform: translateY(-1px); }
.btn-ghost-white { color: #eafcf9; border-color: rgba(255, 255, 255, .45); }
.btn-ghost-white:hover { background: rgba(255, 255, 255, .12); }

/* ================= 顶部导航 ================= */
.site-head {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .86);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s, box-shadow .2s;
}
.site-head.is-stuck { border-bottom-color: var(--line); box-shadow: 0 6px 20px -18px rgba(0, 0, 0, .4); }
.head-inner {
  max-width: 1120px; margin: 0 auto; padding: 0 20px;
  height: 60px; display: flex; align-items: center; gap: 22px;
}
.brand { display: flex; align-items: center; gap: 9px; }
.brand img { width: 28px; height: 28px; border-radius: 8px; box-shadow: 0 4px 10px -5px rgba(15, 163, 160, .8); }
.brand-name { font-size: 17px; font-weight: 700; letter-spacing: .2px; }
.brand-name b { font-weight: 700; color: var(--teal-d); letter-spacing: .2px; }

.head-nav { display: flex; align-items: center; gap: 22px; margin-left: 10px; font-size: 14px; color: var(--ink-2); }
.head-nav a { position: relative; transition: color .16s; }
.head-nav a:hover { color: var(--teal-d); }
.head-nav .nav-online { color: var(--teal-d); font-weight: 600; }
.head-cta { margin-left: auto; display: flex; align-items: center; gap: 8px; }

.nav-toggle { display: none; width: 40px; height: 40px; margin-left: auto; border: 0; background: none; padding: 10px; cursor: pointer; }
.nav-toggle span { display: block; height: 2px; border-radius: 2px; background: var(--ink); margin: 4px 0; transition: transform .2s, opacity .2s; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ================= Hero ================= */
.hero { position: relative; overflow: hidden; padding: 66px 0 40px; }
.hero-bg {
  position: absolute; inset: -10% -10% auto -10%; height: 720px; pointer-events: none;
  background:
    radial-gradient(46% 52% at 78% 18%, rgba(15, 163, 160, .16), transparent 70%),
    radial-gradient(40% 44% at 8% 8%, rgba(185, 242, 200, .34), transparent 72%);
}
.hero-bg::after {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(18, 24, 27, .045) 1px, transparent 1px), linear-gradient(90deg, rgba(18, 24, 27, .045) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(70% 60% at 50% 30%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(70% 60% at 50% 30%, #000 20%, transparent 78%);
}
.hero-inner { position: relative; display: grid; grid-template-columns: 1.02fr 1.12fr; gap: 46px; align-items: center; }

.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  height: 30px; padding: 0 12px 0 10px; margin-bottom: 20px;
  background: #fff; border: 1px solid var(--line-2); border-radius: 999px;
  font-size: 12.5px; color: var(--ink-2);
  box-shadow: var(--shadow-s);
  transition: border-color .18s, color .18s;
}
.hero-badge:hover { border-color: var(--teal); color: var(--teal-d); }
.hero-badge .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--teal); box-shadow: 0 0 0 3px rgba(15, 163, 160, .16); }

.hero h1 { font-size: 50px; line-height: 1.18; letter-spacing: -1.2px; }
.hero h1 .hl {
  background: linear-gradient(96deg, var(--teal-d), #19c2a8 62%, #3fd39a);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub { margin-top: 20px; font-size: 16px; line-height: 1.8; color: var(--ink-2); max-width: 30em; }
.hero-actions { display: flex; align-items: center; gap: 12px; margin-top: 28px; flex-wrap: wrap; }
.hero-points { display: flex; gap: 22px; margin-top: 26px; font-size: 13px; color: var(--sub); flex-wrap: wrap; }
.hero-points b { color: var(--ink); font-weight: 600; }

/* ---- 产品界面示意 ---- */
.hero-shot { position: relative; }
.shot-window {
  background: #fff; border: 1px solid var(--line);
  border-radius: 14px; overflow: hidden;
  box-shadow: var(--shadow-l), 0 2px 0 rgba(255, 255, 255, .8) inset;
}
.shot-bar {
  display: flex; align-items: center; gap: 10px;
  height: 38px; padding: 0 12px;
  background: #fbfcfc; border-bottom: 1px solid var(--line);
}
.lights { display: flex; gap: 5px; }
.lights i { width: 9px; height: 9px; border-radius: 50%; background: #e3e8ea; }
.lights i:first-child { background: #ffc4bd; }
.lights i:nth-child(2) { background: #ffe0a8; }
.lights i:nth-child(3) { background: #b9e8c6; }
.shot-title { font-size: 11.5px; color: var(--sub); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.shot-tag { margin-left: auto; font-size: 10.5px; color: var(--teal-d); background: var(--teal-soft); border-radius: 5px; padding: 2px 7px; }

.shot-body { display: grid; grid-template-columns: 148px 1fr; min-height: 316px; }
.shot-side { background: #fafbfb; border-right: 1px solid var(--line); padding: 12px 9px; }
.side-label { font-size: 10px; color: #a2aeb3; letter-spacing: .6px; padding: 0 6px 6px; }
.side-label.mt { margin-top: 14px; }
.side-item { display: flex; align-items: center; gap: 7px; font-size: 11.5px; color: var(--ink-2); padding: 5px 6px; border-radius: 6px; white-space: nowrap; overflow: hidden; }
.side-item em { width: 6px; height: 6px; border-radius: 2px; background: var(--c, var(--teal)); flex: none; }
.side-item.on { background: var(--teal-soft); color: var(--teal-dd); font-weight: 600; }
.side-sub { font-size: 11px; color: #93a0a6; padding: 4px 6px 4px 19px; }
.side-sub + .side-sub { border-top: 1px dashed #eef2f3; }

.shot-main { padding: 14px 15px 12px; }
.shot-row { display: flex; align-items: baseline; justify-content: space-between; }
.shot-h { font-size: 13.5px; font-weight: 700; }
.shot-date { font-size: 10.5px; color: var(--sub); font-family: var(--mono); }
.shot-meta { display: flex; gap: 6px; margin-top: 7px; flex-wrap: wrap; }
.shot-meta span { font-size: 10px; color: var(--ink-2); background: #f4f6f7; border-radius: 4px; padding: 2px 6px; }
.shot-drop {
  margin: 11px 0 10px; padding: 13px;
  border: 1.5px dashed var(--teal-soft-2); border-radius: 9px;
  background: linear-gradient(180deg, rgba(230, 247, 245, .55), rgba(230, 247, 245, .18));
  color: var(--teal-d); font-size: 11.5px;
  display: flex; align-items: center; justify-content: center; gap: 8px;
}
.shot-files li {
  display: flex; align-items: center; gap: 8px;
  font-size: 11px; color: var(--ink-2);
  padding: 5px 0; border-bottom: 1px dashed #f0f3f4;
}
.shot-files li:last-child { border-bottom: 0; }
.shot-files span { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-family: var(--mono); font-size: 10.5px; }
.shot-files b { font-size: 9.5px; font-weight: 600; color: var(--teal-d); background: var(--teal-soft); border-radius: 4px; padding: 1px 5px; }
.shot-files i { font-style: normal; font-size: 8.5px; font-weight: 700; color: #fff; border-radius: 4px; width: 26px; height: 18px; display: grid; place-items: center; letter-spacing: .3px; }
.f-png { background: #6cb6ff; }
.f-xls { background: #34b37e; }
.f-pdf { background: #f0716a; }
.shot-auto {
  margin-top: 9px; display: flex; align-items: center; gap: 6px;
  font-size: 10.5px; color: var(--teal-dd);
  background: var(--teal-soft); border-radius: 7px; padding: 6px 9px;
}
.pulse { width: 6px; height: 6px; border-radius: 50%; background: var(--teal); box-shadow: 0 0 0 0 rgba(15, 163, 160, .6); animation: pulse 2s infinite; }
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(15, 163, 160, .55); }
  70% { box-shadow: 0 0 0 7px rgba(15, 163, 160, 0); }
  100% { box-shadow: 0 0 0 0 rgba(15, 163, 160, 0); }
}

.float-card {
  position: absolute; background: #fff; border: 1px solid var(--line);
  border-radius: 10px; padding: 9px 13px; box-shadow: var(--shadow-m);
  animation: floaty 6s ease-in-out infinite;
}
.float-card b { display: block; font-size: 12.5px; }
.float-card span { font-size: 10.5px; color: var(--sub); }
.fc-1 { left: -26px; bottom: 54px; }
.fc-2 { right: -18px; top: 34px; animation-delay: -3s; }
@keyframes floaty { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }

/* ================= 数据条 ================= */
.strip { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgba(255, 255, 255, .7); }
.strip-inner { display: grid; grid-template-columns: repeat(4, 1fr); padding-top: 22px; padding-bottom: 22px; gap: 14px; }
.strip-item { text-align: center; }
.strip-item b { display: block; font-size: 24px; letter-spacing: -.5px; color: var(--teal-d); }
.strip-item span { font-size: 12.5px; color: var(--sub); }

/* ================= 通用区块 ================= */
.sec { padding: 76px 0; }
.sec-alt { background: #fff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.sec-head { max-width: 640px; margin-bottom: 38px; }
.sec-head .eyebrow {
  display: inline-block; font-size: 12px; font-weight: 600; letter-spacing: 1.4px;
  color: var(--teal-d); text-transform: uppercase; margin-bottom: 12px;
}
.sec-head h2 { font-size: 32px; line-height: 1.32; letter-spacing: -.6px; }
.sec-head p { margin-top: 12px; color: var(--ink-2); font-size: 15px; }

.reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s cubic-bezier(.22, .8, .3, 1); }
.reveal.is-in { opacity: 1; transform: none; }

/* ================= 痛点 ================= */
.pain-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.pain-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px 20px 24px; box-shadow: var(--shadow-s);
  transition: transform .22s, box-shadow .22s, border-color .22s;
}
.pain-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-m); border-color: var(--line-2); }
.pain-icon {
  width: 38px; height: 38px; border-radius: 10px;
  background: var(--teal-soft); color: var(--teal-d);
  display: grid; place-items: center; margin-bottom: 15px;
}
.pain-icon svg { width: 20px; height: 20px; }
.pain-card h3 { font-size: 15.5px; line-height: 1.45; }
.pain-card p { margin-top: 8px; font-size: 13.5px; color: var(--sub); line-height: 1.7; }

/* ================= 工作流 ================= */
.flow { position: relative; display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.flow-line {
  position: absolute; top: 27px; left: 6%; right: 6%; height: 2px;
  background: linear-gradient(90deg, var(--teal-soft-2), var(--teal), var(--teal-soft-2));
  border-radius: 2px; opacity: .55;
}
.flow-step { position: relative; }
.fs-no {
  position: relative; z-index: 1;
  width: 54px; height: 54px; border-radius: 50%;
  display: grid; place-items: center;
  background: #fff; border: 2px solid var(--teal-soft-2);
  color: var(--teal-d); font-weight: 700; font-size: 15px;
  font-family: var(--mono); letter-spacing: -.5px;
  transition: border-color .2s, background .2s, color .2s;
}
.flow-step:hover .fs-no { background: var(--teal); border-color: var(--teal); color: #fff; }
.flow-step h3 { margin-top: 16px; font-size: 16px; }
.flow-step p { margin-top: 7px; font-size: 13px; color: var(--sub); line-height: 1.7; }

/* ================= 功能 ================= */
.feat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.feat-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px; box-shadow: var(--shadow-s);
  transition: transform .22s, box-shadow .22s;
}
.feat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-m); }
.feat-wide { grid-column: span 3; display: grid; grid-template-columns: 1fr 1.1fr; gap: 26px; align-items: center; }
.feat-ic {
  width: 36px; height: 36px; border-radius: 9px; background: #f3f7f7;
  color: var(--teal-d); display: grid; place-items: center; margin-bottom: 14px;
}
.feat-ic svg { width: 19px; height: 19px; }
.feat-card h3 { font-size: 15.5px; }
.feat-card p { margin-top: 8px; font-size: 13.5px; color: var(--sub); line-height: 1.72; }
.feat-card code {
  font-family: var(--mono); font-size: 12px; color: var(--teal-dd);
  background: var(--teal-soft); border-radius: 4px; padding: 1px 5px;
}
.feat-top h3 { font-size: 19px; }
.feat-top p { font-size: 14px; }

.feat-demo {
  display: grid; grid-template-columns: 1fr auto 1.35fr; gap: 12px; align-items: center;
  background: #fafbfb; border: 1px solid var(--line); border-radius: 11px; padding: 14px;
}
.fd-lb { font-size: 10.5px; color: var(--sub); letter-spacing: .5px; }
.feat-demo ul { margin-top: 7px; }
.feat-demo li {
  font-family: var(--mono); font-size: 10.5px; color: var(--ink-2);
  padding: 4px 7px; border-radius: 5px; background: #fff; border: 1px solid var(--line);
  margin-bottom: 5px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.fd-after li { color: var(--teal-dd); border-color: var(--teal-soft-2); background: var(--teal-soft); }
.fd-arrow { color: var(--teal); opacity: .6; }

/* ================= 实验类型 ================= */
.types-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.type-groups { margin-top: 22px; display: grid; gap: 10px; }
.type-groups li { font-size: 13.5px; color: var(--ink-2); padding-left: 12px; border-left: 2px solid var(--teal-soft-2); }
.type-groups b { color: var(--ink); margin-right: 8px; }
.types-cloud { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.types-cloud span {
  padding: 9px 16px; border-radius: 999px; background: #fff;
  border: 1px solid var(--line); font-size: 13px; color: var(--ink-2);
  box-shadow: var(--shadow-s);
  transition: transform .2s, border-color .2s, color .2s;
}
.types-cloud span:hover { transform: translateY(-2px); border-color: var(--teal); color: var(--teal-d); }
.types-cloud span:nth-child(3n) { background: var(--teal-soft); border-color: var(--teal-soft-2); color: var(--teal-dd); }

/* ================= CTA ================= */
.cta-wrap { padding-top: 10px; }
.cta-card {
  position: relative; overflow: hidden;
  border-radius: var(--radius-lg);
  padding: 44px 44px;
  background: linear-gradient(112deg, #0b7f7d 0%, #0fa3a0 52%, #17b9a4 100%);
  color: #fff;
  display: flex; align-items: center; gap: 30px; justify-content: space-between;
  box-shadow: 0 30px 60px -34px rgba(7, 107, 105, .9);
}
.cta-card::after {
  content: ""; position: absolute; right: -60px; top: -80px; width: 320px; height: 320px;
  border-radius: 50%; background: radial-gradient(circle, rgba(255, 255, 255, .22), transparent 68%);
}
.cta-text { position: relative; z-index: 1; max-width: 620px; }
.cta-text h2 { font-size: 27px; letter-spacing: -.5px; }
.cta-text p { margin-top: 10px; font-size: 14.5px; line-height: 1.8; color: rgba(255, 255, 255, .86); }
.cta-acts { position: relative; z-index: 1; display: flex; gap: 12px; flex-wrap: wrap; }

/* ================= 软件矩阵 ================= */
.matrix { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.mx-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px; box-shadow: var(--shadow-s);
  display: flex; flex-direction: column; gap: 10px;
  transition: transform .22s, box-shadow .22s, border-color .22s;
}
.mx-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-m); border-color: var(--line-2); }
.mx-on { border-color: var(--teal-soft-2); background: linear-gradient(180deg, #f7fdfc, #fff); }
.mx-head { display: flex; align-items: center; gap: 9px; }
.mx-head h3 { font-size: 15.5px; }
.mx-badge { font-size: 10.5px; font-weight: 600; color: #fff; background: #6b7c85; border-radius: 4px; padding: 2px 6px; }
.mx-badge.b-blue { background: #2f7ad6; }
.mx-badge.b-teal { background: var(--teal); }
.mx-now { margin-left: auto; font-size: 10.5px; color: var(--teal-dd); background: var(--teal-soft); border-radius: 4px; padding: 2px 7px; }
.mx-card p { font-size: 13px; color: var(--sub); line-height: 1.7; flex: 1; }
.mx-link { font-size: 12.5px; font-weight: 600; color: var(--teal-d); }
.mx-card:not(.mx-on):hover .mx-link { color: var(--teal-dd); }

/* ================= 下载 ================= */
.dl-inner { display: grid; grid-template-columns: 1.15fr .85fr; gap: 40px; align-items: center; }
.dl-copy h2 { font-size: 30px; letter-spacing: -.6px; margin: 10px 0 12px; }
.dl-copy > p { color: var(--ink-2); font-size: 14.5px; line-height: 1.8; max-width: 34em; }
.dl-acts { display: flex; gap: 12px; margin-top: 24px; flex-wrap: wrap; }
.dl-note { margin-top: 14px; font-size: 12px; color: var(--sub); }
.dl-sys { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow-s); }
.dl-sys h3 { font-size: 14px; margin-bottom: 14px; }
.dl-sys li { display: flex; justify-content: space-between; gap: 16px; font-size: 12.5px; padding: 9px 0; border-bottom: 1px dashed var(--line); }
.dl-sys li:last-child { border-bottom: 0; }
.dl-sys span { color: var(--sub); flex: none; }
.dl-sys b { font-weight: 500; color: var(--ink-2); text-align: right; }

/* ================= FAQ ================= */
.faq-wrap { display: grid; grid-template-columns: .72fr 1.28fr; gap: 40px; align-items: start; }
.faq-wrap .sec-head { margin-bottom: 0; }
.faq-list details {
  background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  padding: 0 18px; margin-bottom: 10px; box-shadow: var(--shadow-s);
}
.faq-list summary {
  cursor: pointer; padding: 15px 0; font-size: 14.5px; font-weight: 600;
  list-style: none; display: flex; align-items: center; justify-content: space-between; gap: 12px;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: "+"; font-size: 18px; color: var(--teal); font-weight: 400;
  transition: transform .2s;
}
.faq-list details[open] summary::after { content: "–"; }
.faq-list p { padding: 0 0 15px; font-size: 13.5px; color: var(--sub); line-height: 1.78; }

/* ================= 页脚 ================= */
.site-foot { border-top: 1px solid var(--line); background: #fff; padding: 44px 0 20px; margin-top: 20px; }
.foot-inner { display: flex; gap: 40px; justify-content: space-between; flex-wrap: wrap; }
.foot-brand { display: flex; gap: 12px; max-width: 300px; }
.foot-brand img { border-radius: 8px; }
.foot-name { font-size: 15px; font-weight: 700; }
.foot-name span { font-weight: 500; color: var(--sub); font-size: 12.5px; margin-left: 4px; }
.foot-brand p { margin-top: 5px; font-size: 12.5px; color: var(--sub); line-height: 1.7; }
.foot-links { display: flex; gap: 56px; flex-wrap: wrap; }
.fl-col h4 { font-size: 12.5px; color: var(--ink); margin-bottom: 10px; letter-spacing: .3px; }
.fl-col a { display: block; font-size: 12.5px; color: var(--sub); padding: 4px 0; transition: color .16s; }
.fl-col a:hover { color: var(--teal-d); }
.foot-bottom {
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  margin-top: 34px; padding-top: 16px; border-top: 1px solid var(--line);
  font-size: 11.5px; color: #9aa7ad;
}

/* ================= 响应式 ================= */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero h1 { font-size: 42px; }
  .hero-shot { max-width: 620px; }
  .fc-1 { left: 4px; }
  .fc-2 { right: 4px; }
  .pain-grid { grid-template-columns: repeat(2, 1fr); }
  .feat-grid { grid-template-columns: repeat(2, 1fr); }
  .feat-wide { grid-column: span 2; grid-template-columns: 1fr; }
  .flow { grid-template-columns: repeat(2, 1fr); gap: 26px; }
  .flow-line { display: none; }
  .types-inner { grid-template-columns: 1fr; gap: 34px; }
  .matrix { grid-template-columns: 1fr; }
  .dl-inner { grid-template-columns: 1fr; gap: 28px; }
  .faq-wrap { grid-template-columns: 1fr; gap: 24px; }
  .cta-card { flex-direction: column; align-items: flex-start; padding: 34px 28px; }
}

@media (max-width: 760px) {
  .head-nav, .head-cta { display: none; }
  .nav-toggle { display: block; }
  .site-head.is-open .head-nav {
    display: flex; flex-direction: column; align-items: stretch; gap: 0;
    position: absolute; left: 0; right: 0; top: 60px;
    background: #fff; border-bottom: 1px solid var(--line);
    padding: 8px 20px 16px; margin: 0;
    box-shadow: 0 18px 30px -24px rgba(0, 0, 0, .5);
  }
  .site-head.is-open .head-nav a { padding: 12px 0; border-bottom: 1px solid var(--line); font-size: 15px; }
  .site-head.is-open .head-nav a:last-child { border-bottom: 0; }

  .hero { padding: 40px 0 28px; }
  .hero h1 { font-size: 34px; letter-spacing: -.8px; }
  .hero-sub { font-size: 15px; }
  .hero-actions .btn { flex: 1 1 100%; }
  .shot-body { grid-template-columns: 1fr; }
  .shot-side { display: none; }
  .float-card { display: none; }
  .strip-inner { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .sec { padding: 52px 0; }
  .sec-head h2 { font-size: 25px; }
  .pain-grid, .feat-grid { grid-template-columns: 1fr; }
  .feat-wide { grid-column: span 1; }
  .feat-demo { grid-template-columns: 1fr; }
  .fd-arrow { transform: rotate(90deg); justify-self: center; }
  .flow { grid-template-columns: 1fr; }
  .cta-text h2 { font-size: 22px; }
  .cta-acts { width: 100%; }
  .cta-acts .btn { flex: 1 1 auto; }
  .foot-links { gap: 32px; }
}