/* ============================================================
   BackupWiz 官网样式 · Docker 深蓝风格
   配色与客户端一致：深底 #0B1220 / 卡片 #1A2332 / 蓝 #2E72F0
   ============================================================ */
:root {
  --bg:        #0B1220;
  --bg-alt:    #0E1828;
  --surface:   #141D2E;
  --card:      #1A2332;
  --card-hi:   #202C40;
  --border:    rgba(148, 172, 210, 0.14);
  --border-hi: rgba(59, 130, 246, 0.45);
  --text:      #E6EDF7;
  --muted:     #8FA0BA;
  --faint:     #5E6E8A;
  --blue:      #2E72F0;
  --blue-hi:   #4C8BFF;
  --blue-deep: #0D3FB0;
  --green:     #34D399;
  --yellow:    #FBBF24;
  --red:       #F87171;
  --purple:    #A78BFA;
  --orange:    #FB923C;
  --cyan:      #22D3EE;
  --radius:    14px;
  --shadow:    0 20px 60px rgba(0, 0, 0, 0.45);
  --maxw:      1160px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: "Segoe UI", "Microsoft YaHei", -apple-system, "PingFang SC", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.container.narrow { max-width: 820px; }

h1, h2, h3 { line-height: 1.25; font-weight: 700; letter-spacing: -0.01em; }

a { color: inherit; text-decoration: none; }

.grad-text {
  background: linear-gradient(92deg, #4C8BFF 0%, #22D3EE 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 22px; border-radius: 10px;
  font-size: 15px; font-weight: 600; cursor: pointer;
  border: 1px solid transparent; transition: all .2s ease;
  white-space: nowrap;
}
.btn-lg { padding: 14px 30px; font-size: 16px; }
.btn-sm { padding: 8px 18px; font-size: 14px; }
.btn-primary {
  background: linear-gradient(180deg, var(--blue-hi), var(--blue));
  color: #fff; box-shadow: 0 8px 24px rgba(46, 114, 240, 0.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(46, 114, 240, 0.5); }
.btn-ghost {
  background: rgba(255, 255, 255, 0.04); color: var(--text);
  border-color: var(--border);
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.09); border-color: var(--border-hi); }
.btn-block { width: 100%; justify-content: center; }

/* ---------- 导航 ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(11, 18, 32, 0.82);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 20px; }
.brand-mark { display: inline-flex; }
.brand-name { letter-spacing: -0.02em; }
.brand-accent { color: var(--blue-hi); }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a:not(.btn) { color: var(--muted); font-size: 15px; font-weight: 500; transition: color .2s; }
.nav-links a:not(.btn):hover { color: var(--text); }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 6px; }
.nav-toggle span { width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: .25s; }

/* ---------- Hero ---------- */
.hero { position: relative; padding: 72px 0 84px; overflow: hidden; }
.hero-glow {
  position: absolute; top: -240px; left: 50%; transform: translateX(-50%);
  width: 900px; height: 620px; pointer-events: none;
  background: radial-gradient(closest-side, rgba(46, 114, 240, 0.28), transparent);
}
.hero-inner { position: relative; display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }

.pill {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 14px; border-radius: 999px; font-size: 13px; color: var(--muted);
  background: rgba(46, 114, 240, 0.12); border: 1px solid var(--border-hi);
  margin-bottom: 22px;
}
.pill .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 8px var(--green); }

.hero h1 { font-size: 46px; margin-bottom: 20px; }
.lead { font-size: 17px; color: var(--muted); max-width: 540px; margin-bottom: 30px; }
.lead b { color: var(--text); }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 26px; }
.hero-trust { display: flex; gap: 26px; list-style: none; flex-wrap: wrap; color: var(--faint); font-size: 13px; }
.hero-trust b { color: var(--text); font-size: 17px; margin-right: 4px; }

/* ---------- 软件窗口 mockup ---------- */
.hero-visual { position: relative; }
.app-window {
  background: var(--bg-alt); border: 1px solid var(--border);
  border-radius: 14px; overflow: hidden; box-shadow: var(--shadow);
}
.aw-titlebar {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 14px; background: var(--card); border-bottom: 1px solid var(--border);
}
.aw-dot { width: 11px; height: 11px; border-radius: 50%; }
.aw-dot.red { background: #ff5f57; } .aw-dot.yellow { background: #febc2e; } .aw-dot.green { background: #28c840; }
.aw-title { margin-left: 10px; font-size: 12px; color: var(--faint); }

.aw-toolbar { display: flex; gap: 6px; padding: 10px 12px; background: var(--bg-alt); border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.aw-tb {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12px; color: var(--muted); padding: 6px 12px; border-radius: 8px;
  background: rgba(255,255,255,0.03); border: 1px solid var(--border);
}
.aw-tb.primary { color: #fff; background: linear-gradient(180deg, var(--blue-hi), var(--blue)); border-color: transparent; }
.aw-tb i { width: 14px; height: 14px; border-radius: 3px; background: currentColor; opacity: .8; display: inline-block; }

.aw-body { display: grid; grid-template-columns: 150px 1fr; min-height: 260px; }
.app-window.big .aw-body { min-height: 340px; grid-template-columns: 170px 1fr; }
.aw-side { background: var(--surface); border-right: 1px solid var(--border); padding: 12px 10px; font-size: 12.5px; }
.aw-tree-group { color: var(--muted); font-weight: 600; margin-bottom: 10px; }
.aw-tree-group em { display: block; font-style: normal; font-size: 11px; color: var(--faint); font-weight: 400; margin-top: 2px; }
.aw-tree-item { padding: 7px 9px; border-radius: 7px; color: var(--muted); display: flex; justify-content: space-between; align-items: center; gap: 6px; }
.aw-tree-item.active { background: rgba(46,114,240,0.16); color: var(--text); border: 1px solid var(--border-hi); }
.aw-tree-item.muted { color: var(--faint); }
.aw-tree-item .ok { color: var(--green); } .aw-tree-item .run { color: var(--blue-hi); }

.aw-main { padding: 14px 16px; }
.aw-paths { display: grid; gap: 6px; margin-bottom: 12px; font-size: 12px; }
.aw-paths label { color: var(--faint); margin-right: 8px; }
.aw-paths code { color: var(--cyan); background: rgba(34,211,238,0.08); padding: 2px 8px; border-radius: 5px; }

.aw-diff-head { display: flex; justify-content: space-between; align-items: center; font-size: 13px; font-weight: 600; margin-bottom: 8px; flex-wrap: wrap; gap: 8px; }
.aw-filters { display: flex; gap: 6px; font-weight: 400; font-size: 11.5px; color: var(--faint); align-items: center; flex-wrap: wrap; }
.aw-filters i { font-style: normal; padding: 2px 8px; border-radius: 5px; background: rgba(255,255,255,0.04); }
.aw-filters .f-on { color: #fff; background: var(--blue); padding: 2px 9px; border-radius: 5px; font-style: normal; }

.aw-diff-cols { display: grid; grid-template-columns: 1fr 90px 90px 90px; gap: 8px; font-size: 11px; color: var(--faint); padding: 4px 6px; border-bottom: 1px solid var(--border); }

.aw-row {
  display: grid; grid-template-columns: 22px 1fr auto; align-items: center; gap: 8px;
  padding: 6px 6px; font-size: 12.5px; border-radius: 6px;
}
.app-window.big .aw-row { grid-template-columns: 22px 1fr 84px 84px 84px; }
.aw-row + .aw-row { border-top: 1px solid rgba(148,172,210,0.07); }
.aw-row .chk { color: var(--blue-hi); font-size: 13px; }
.aw-row .fn { color: var(--text); }
.aw-row.sub { padding-left: 26px; color: var(--muted); }
.aw-row.sub .fn { color: var(--muted); }
.aw-row .sz { color: var(--faint); font-size: 11.5px; }
.aw-row .dim { opacity: .55; }
.aw-row.new { background: rgba(52, 211, 153, 0.06); }

.tag { font-size: 10.5px; padding: 2px 8px; border-radius: 5px; font-weight: 600; white-space: nowrap; justify-self: end; }
.t-new { color: var(--green); background: rgba(52,211,153,0.13); }
.t-mod { color: var(--yellow); background: rgba(251,191,36,0.13); }
.t-del { color: var(--red); background: rgba(248,113,113,0.13); }
.t-skip { color: var(--faint); background: rgba(255,255,255,0.05); }
.t-dedup { color: var(--purple); background: rgba(167,139,250,0.14); }

.aw-progress { height: 7px; border-radius: 99px; background: rgba(255,255,255,0.08); margin: 14px 0 8px; overflow: hidden; }
.aw-progress span { display: block; height: 100%; border-radius: 99px; background: linear-gradient(90deg, var(--blue), var(--cyan)); }
.aw-status { font-size: 11.5px; color: var(--faint); }

.float-card {
  position: absolute; background: var(--card); border: 1px solid var(--border);
  border-radius: 12px; padding: 12px 16px; font-size: 13px; font-weight: 600;
  box-shadow: var(--shadow); animation: floaty 4s ease-in-out infinite;
}
.float-card small { display: block; font-weight: 400; color: var(--faint); font-size: 11px; }
.fc1 { top: -18px; right: -10px; }
.fc2 { bottom: -16px; left: -14px; animation-delay: 1.5s; }
@keyframes floaty { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }

/* ---------- 信任条 ---------- */
.strip { border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); background: var(--bg-alt); }
.strip-inner { display: flex; justify-content: space-around; flex-wrap: wrap; gap: 18px; padding: 26px 24px; }
.strip-inner div { text-align: center; }
.strip-inner b { display: block; font-size: 22px; color: var(--blue-hi); letter-spacing: -0.02em; }
.strip-inner span { font-size: 13px; color: var(--muted); }

/* ---------- 通用 Section ---------- */
.section { padding: 84px 0; }
.section-alt { background: var(--bg-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.sec-head { text-align: center; max-width: 680px; margin: 0 auto 52px; }
.eyebrow { display: inline-block; font-size: 13px; font-weight: 700; color: var(--blue-hi); letter-spacing: .08em; text-transform: uppercase; margin-bottom: 12px; }
.sec-head h2 { font-size: 34px; margin-bottom: 14px; }
.sec-head p { color: var(--muted); font-size: 16px; }
.sec-head b { color: var(--text); }

/* ---------- 特性卡片 ---------- */
.grid { display: grid; gap: 22px; }
.features { grid-template-columns: repeat(3, 1fr); }
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px 26px; transition: transform .25s ease, border-color .25s ease;
}
.card:hover { transform: translateY(-5px); border-color: var(--border-hi); }
.card h3 { font-size: 19px; margin: 16px 0 10px; }
.card p { color: var(--muted); font-size: 14.5px; }
.card p b { color: var(--text); }
.ic {
  width: 48px; height: 48px; border-radius: 12px; display: flex; align-items: center; justify-content: center;
}
.ic svg { width: 24px; height: 24px; }
.ic-blue   { background: rgba(46,114,240,0.16);  color: var(--blue-hi); }
.ic-purple { background: rgba(167,139,250,0.16); color: var(--purple); }
.ic-green  { background: rgba(52,211,153,0.15);  color: var(--green); }
.ic-orange { background: rgba(251,146,60,0.16);  color: var(--orange); }
.ic-cyan   { background: rgba(34,211,238,0.14);  color: var(--cyan); }
.ic-red    { background: rgba(248,113,113,0.15); color: var(--red); }

/* ---------- 展示 ---------- */
.showcase { max-width: 960px; margin: 0 auto; }
.app-window.big { box-shadow: 0 30px 80px rgba(0,0,0,0.55); }
.showcase-note { text-align: center; color: var(--faint); font-size: 13.5px; margin-top: 18px; }

/* ---------- 步骤 ---------- */
.steps { display: flex; align-items: stretch; justify-content: center; gap: 18px; }
.step { flex: 1; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 30px 26px; text-align: center; }
.step h3 { font-size: 18px; margin-bottom: 10px; }
.step p { color: var(--muted); font-size: 14px; }
.step-num {
  width: 46px; height: 46px; margin: 0 auto 16px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; font-weight: 700; color: #fff;
  background: linear-gradient(180deg, var(--blue-hi), var(--blue));
}
.step-arrow { align-self: center; color: var(--faint); font-size: 26px; }

/* ---------- 人群 ---------- */
.audience { grid-template-columns: repeat(4, 1fr); }
.mini-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; }
.mini-card b { display: block; font-size: 16px; margin-bottom: 8px; }
.mini-card span { color: var(--muted); font-size: 13.5px; }

/* ---------- 定价 ---------- */
.pricing { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; align-items: stretch; }
.price-card {
  position: relative; background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 32px 28px; display: flex; flex-direction: column;
}
.price-card.featured {
  background: linear-gradient(180deg, rgba(46,114,240,0.16), rgba(13,63,176,0.10));
  border-color: var(--border-hi); box-shadow: 0 20px 50px rgba(46,114,240,0.18);
  transform: scale(1.03);
}
.price-card h3 { font-size: 19px; margin-bottom: 12px; }
.price { font-size: 42px; font-weight: 800; letter-spacing: -0.02em; }
.price small { font-size: 15px; font-weight: 500; color: var(--muted); }
.price-sub { color: var(--muted); font-size: 13.5px; margin-bottom: 20px; }
.price-card ul { list-style: none; margin-bottom: 26px; flex: 1; }
.price-card li { padding: 7px 0; color: var(--muted); font-size: 14px; border-bottom: 1px solid rgba(148,172,210,0.08); }
.badge {
  position: absolute; top: -13px; left: 50%; transform: translateX(-50%);
  background: linear-gradient(90deg, var(--blue-hi), var(--cyan)); color: #06101f;
  font-size: 12px; font-weight: 700; padding: 5px 16px; border-radius: 999px; white-space: nowrap;
}
.pricing-note { text-align: center; color: var(--faint); font-size: 13px; margin-top: 26px; }

/* ---------- 下载 ---------- */
.download { background: radial-gradient(closest-side at 50% 0%, rgba(46,114,240,0.22), transparent); }
.download-inner { text-align: center; }
.download h2 { font-size: 34px; margin-bottom: 10px; }
.download p { color: var(--muted); margin-bottom: 28px; }
.dl-actions { margin-bottom: 26px; display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; align-items: center; }
.dl-size { color: var(--faint); font-size: 13px; margin: -8px 0 20px; }
.dl-meta { list-style: none; display: flex; justify-content: center; gap: 26px; flex-wrap: wrap; color: var(--muted); font-size: 14px; }

/* ---------- FAQ ---------- */
.faq details {
  background: var(--card); border: 1px solid var(--border); border-radius: 12px;
  padding: 18px 22px; margin-bottom: 14px;
}
.faq summary { cursor: pointer; font-size: 16px; font-weight: 600; list-style: none; position: relative; padding-right: 28px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 0; top: 0; color: var(--blue-hi); font-size: 22px; line-height: 1; transition: .2s; }
.faq details[open] summary::after { content: "–"; }
.faq details p { color: var(--muted); font-size: 14.5px; margin-top: 12px; }

/* ---------- 页脚 ---------- */
.footer { background: var(--bg-alt); border-top: 1px solid var(--border); padding-top: 56px; }
.footer-inner { display: grid; grid-template-columns: 1.4fr 2fr; gap: 40px; padding-bottom: 40px; }
.footer-brand .brand-name { font-size: 22px; font-weight: 700; }
.footer-brand p { color: var(--faint); font-size: 13.5px; margin-top: 12px; max-width: 320px; }
.footer-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.footer-cols h4 { font-size: 14px; margin-bottom: 14px; }
.footer-cols a { display: block; color: var(--muted); font-size: 13.5px; padding: 5px 0; transition: color .2s; }
.footer-cols a:hover { color: var(--blue-hi); }
.footer-bottom {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px;
  padding: 22px 24px; border-top: 1px solid var(--border);
  color: var(--faint); font-size: 13px;
}

/* ---------- 滚动显现 ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; gap: 44px; }
  .hero h1 { font-size: 36px; }
  .features, .audience, .pricing { grid-template-columns: repeat(2, 1fr); }
  .steps { flex-direction: column; }
  .step-arrow { transform: rotate(90deg); }
  .price-card.featured { transform: none; }
  .footer-inner { grid-template-columns: 1fr; }
}
@media (max-width: 680px) {
  .nav-links {
    position: fixed; top: 64px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--bg-alt); border-bottom: 1px solid var(--border);
    padding: 10px 24px 20px; display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a:not(.btn) { padding: 12px 0; border-bottom: 1px solid var(--border); }
  .nav-links .btn { margin-top: 14px; justify-content: center; }
  .nav-toggle { display: flex; }
  .hero { padding: 48px 0 60px; }
  .hero h1 { font-size: 30px; }
  .section { padding: 60px 0; }
  .sec-head h2 { font-size: 26px; }
  .features, .audience, .pricing { grid-template-columns: 1fr; }
  .aw-body { grid-template-columns: 1fr; }
  .aw-side { display: none; }
  .aw-diff-cols, .app-window.big .aw-row { grid-template-columns: 22px 1fr auto; }
  .app-window.big .aw-row .sz:nth-child(4) { display: none; }
  .aw-diff-cols { display: none; }
  .float-card { display: none; }
  .strip-inner { gap: 22px; }
  .strip-inner div { flex: 0 0 40%; }
}