/* ============ 数据恢复专家 官网样式 ============ */
:root {
  --primary: #0e6fff;
  --primary-dark: #0a54c0;
  --cyan: #22d3ee;
  --navy: #0b1530;
  --navy-2: #111d3d;
  --text: #1f2937;
  --muted: #6b7280;
  --bg-alt: #f4f7fc;
  --border: #e5eaf2;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(14, 111, 255, .10);
  --shadow-lg: 0 18px 45px rgba(11, 21, 48, .14);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", system-ui, sans-serif;
  color: var(--text);
  background: #fff;
  line-height: 1.7;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
.container { width: min(1180px, 92%); margin: 0 auto; }
.container-narrow { width: min(860px, 92%); margin: 0 auto; }

/* 公告条 */
.announce {
  background: linear-gradient(90deg, #0e6fff, #22d3ee); color: #fff;
  text-align: center; font-size: 13.5px; padding: 8px 0;
  position: relative; z-index: 101;
}
.announce .container { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---------- 导航 ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(255,255,255,.92); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
body.has-announce .nav { top: 34px; }
.logo-img { height: 30px; width: auto; }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 19px; color: var(--navy); }
.logo-slogan { font-size: 12px; font-weight: 400; color: var(--muted); border-left: 1px solid var(--border); padding-left: 10px; }
@media (max-width: 760px) { .logo-slogan { display: none; } }
.logo-icon { font-size: 24px; }
.menu { display: flex; align-items: center; gap: 26px; }
.menu-link { color: var(--text); font-weight: 500; font-size: 15px; transition: color .2s; }
.menu-link:hover { color: var(--primary); }
.nav-toggle { display: none; background: none; border: 0; font-size: 24px; cursor: pointer; color: var(--navy); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border-radius: 999px; font-weight: 600; cursor: pointer; transition: all .2s;
  border: 0; font-family: inherit;
}
.btn-primary { background: linear-gradient(135deg, var(--primary), #3f8cff); color: #fff; box-shadow: 0 8px 22px rgba(14,111,255,.35); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(14,111,255,.45); }
.btn-ghost { background: transparent; color: #fff; border: 1.5px solid rgba(255,255,255,.55); }
.btn-ghost:hover { background: rgba(255,255,255,.12); }
.btn-sm { padding: 8px 18px; font-size: 14px; }
.btn-lg { padding: 14px 30px; font-size: 16px; }
.btn-xl { padding: 18px 46px; font-size: 18px; }
.btn-primary.btn-xl { animation: pulse 2.2s infinite; }
@keyframes pulse {
  0%,100% { box-shadow: 0 8px 22px rgba(14,111,255,.35); }
  50% { box-shadow: 0 8px 34px rgba(14,111,255,.55); }
}

/* ---------- Hero ---------- */
.hero {
  padding: 150px 0 90px;
  background: radial-gradient(1200px 600px at 85% -10%, #123c8f 0%, transparent 60%),
              radial-gradient(900px 500px at -10% 110%, #0e7490 0%, transparent 55%),
              linear-gradient(160deg, var(--navy) 0%, var(--navy-2) 100%);
  color: #fff;
}
.hero-inner { display: grid; grid-template-columns: 1.05fr .95fr; gap: 50px; align-items: center; }
.badge {
  display: inline-block; padding: 6px 16px; border-radius: 999px; font-size: 13px;
  background: rgba(34,211,238,.14); color: var(--cyan); border: 1px solid rgba(34,211,238,.35);
  margin-bottom: 18px;
}
.hero h1 { font-size: clamp(34px, 5vw, 56px); line-height: 1.18; font-weight: 800; letter-spacing: .5px; }
.hero .hl { color: var(--cyan); position: relative; }
.hero .hl::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 4px; height: 10px;
  background: rgba(34,211,238,.25); z-index: -1; border-radius: 4px;
}
.subtitle { margin: 20px 0 30px; font-size: 17px; color: #c8d4ee; max-width: 540px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.note { margin-top: 18px; font-size: 13.5px; color: #93a6cc; }

.hero-mock {
  background: #0d1b3a; border: 1px solid rgba(255,255,255,.12);
  border-radius: 16px; overflow: hidden; box-shadow: 0 30px 70px rgba(0,0,0,.45);
}
.mock-bar { display: flex; gap: 6px; padding: 12px 16px; background: #0a152e; }
.mock-bar i { width: 10px; height: 10px; border-radius: 50%; background: #ff5f57; }
.mock-bar i:nth-child(2) { background: #febc2e; }
.mock-bar i:nth-child(3) { background: #28c840; }
.mock-body { display: grid; grid-template-columns: 130px 1fr; min-height: 300px; }
.mock-side { background: #0a152e; padding: 18px 12px; display: flex; flex-direction: column; gap: 10px; }
.mock-item { font-size: 12.5px; color: #9db0d8; padding: 9px 12px; border-radius: 8px; background: rgba(255,255,255,.04); }
.mock-item.active { background: rgba(14,111,255,.22); color: #fff; border: 1px solid rgba(14,111,255,.4); }
.mock-main { padding: 22px; display: flex; flex-direction: column; gap: 12px; }
.mock-row {
  display: flex; justify-content: space-between; align-items: center;
  background: rgba(255,255,255,.05); border-radius: 10px; padding: 14px 16px; font-size: 13.5px;
}
.mock-row b { color: #e7edfa; font-weight: 600; }
.mock-row span { color: var(--cyan); font-weight: 700; }
.mock-btn {
  margin-top: 10px; text-align: center; padding: 12px; border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), #3f8cff); color: #fff; font-weight: 700;
}

/* ---------- 统计 ---------- */
.stats { background: #fff; padding: 26px 0 8px; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.stat { text-align: center; }
.stat-num { font-size: 40px; font-weight: 800; color: var(--primary); }
.stat-label { color: var(--muted); font-size: 14px; margin-top: 4px; }
.trust { text-align: center; color: #9aa4b5; font-size: 13.5px; padding: 20px 0 6px; }

/* ---------- 区块通用 ---------- */
.section { padding: 84px 0; }
.section-alt { background: var(--bg-alt); }
.section-head { text-align: center; margin-bottom: 46px; }
.section-head h2 { font-size: 32px; font-weight: 800; color: var(--navy); }
.section-head p { color: var(--muted); margin-top: 10px; font-size: 15.5px; }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px; transition: transform .25s, box-shadow .25s;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.feature-card h3 { font-size: 18px; margin: 14px 0 8px; color: var(--navy); }
.feature-card p { color: var(--muted); font-size: 14.5px; }
.feature-ico {
  width: 46px; height: 46px; border-radius: 12px; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--cyan)); color: #fff; font-size: 22px;
}
.step-card { text-align: center; position: relative; }
.step-num {
  width: 44px; height: 44px; margin: 0 auto 14px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: var(--navy); color: var(--cyan); font-weight: 800; font-size: 19px;
}
.step-card h3 { font-size: 17px; margin-bottom: 8px; color: var(--navy); }
.step-card p { color: var(--muted); font-size: 14.5px; }

/* ---------- 类型 chips ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; max-width: 900px; margin: 0 auto; }
.chip {
  padding: 12px 26px; border-radius: 999px; background: #fff; border: 1px solid var(--border);
  font-weight: 600; color: var(--navy); font-size: 15px; box-shadow: 0 4px 14px rgba(11,21,48,.05);
  transition: all .2s;
}
.chip:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-2px); }

/* ---------- 评价 ---------- */
.t-card { text-align: center; }
.t-stars { color: #fbbf24; letter-spacing: 3px; margin-bottom: 12px; }
.t-text { color: var(--text); font-size: 14.5px; min-height: 92px; }
.t-name { margin-top: 14px; font-weight: 700; color: var(--primary); font-size: 14px; }

/* ---------- FAQ ---------- */
.faq { display: flex; flex-direction: column; gap: 12px; }
.faq-item { border: 1px solid var(--border); border-radius: var(--radius); background: #fff; overflow: hidden; }
.faq-q {
  width: 100%; text-align: left; background: none; border: 0; cursor: pointer;
  padding: 18px 22px; font-size: 15.5px; font-weight: 600; color: var(--navy);
  display: flex; justify-content: space-between; align-items: center; font-family: inherit;
}
.faq-arrow { transition: transform .25s; color: var(--primary); }
.faq-item.open .faq-arrow { transform: rotate(180deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq-a p { padding: 0 22px 18px; color: var(--muted); font-size: 14.5px; }

/* ---------- 下载区 ---------- */
.section-dl { background: linear-gradient(160deg, var(--navy), var(--navy-2)); }
.dl-card {
  background: #fff; border-radius: 22px; text-align: center; padding: 52px 40px;
  box-shadow: var(--shadow-lg);
}
.dl-card h2 { font-size: 30px; font-weight: 800; color: var(--navy); }
.dl-sub { color: var(--muted); margin: 8px 0 26px; }
.dl-meta { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; margin-bottom: 14px; }
.dl-meta span { padding: 7px 18px; border-radius: 999px; font-size: 13.5px; font-weight: 600; }
.dl-name { background: rgba(14,111,255,.1); color: var(--primary); }
.dl-ver { background: var(--bg-alt); color: var(--navy); }
.dl-size { background: var(--bg-alt); color: var(--navy); }
.dl-count { background: rgba(34,211,238,.12); color: #0e7490; }
.dl-desc { color: var(--muted); font-size: 14px; margin-bottom: 24px; }
.dl-btn { margin: 6px 0 10px; }
.dl-note { color: var(--muted); font-size: 13.5px; margin-top: 16px; }
.dl-other { color: #aab; font-size: 13px; margin-top: 6px; }
.dl-empty { color: var(--muted); padding: 20px 0; }

/* ---------- 安全盒 ---------- */
.sec-box { background: var(--bg-alt); border: 1px solid var(--border); border-radius: var(--radius); padding: 30px; }
.sec-box h2 { font-size: 20px; color: var(--navy); margin-bottom: 10px; }
.sec-box p { color: var(--muted); font-size: 14.5px; }

/* ---------- 页脚 ---------- */
.footer { background: #081022; color: #9db0d8; padding: 54px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 30px; padding-bottom: 34px; }
.footer-col h4 { color: #fff; font-size: 16px; margin-bottom: 14px; }
.footer-col p, .footer-col a { font-size: 14px; display: block; margin-bottom: 8px; color: #9db0d8; }
.footer-col a:hover { color: var(--cyan); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08); text-align: center;
  padding: 18px 0; font-size: 13px; color: #6d7ea6;
}

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .hero { padding: 120px 0 70px; }
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 26px; }
  .footer-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .menu {
    display: none; position: absolute; top: 68px; left: 0; right: 0; flex-direction: column;
    background: #fff; padding: 20px; gap: 16px; box-shadow: var(--shadow-lg);
  }
  .menu.open { display: flex; }
  .nav-toggle { display: block; }
  .grid-3 { grid-template-columns: 1fr; }
}