/* ============================================================
   Mindframe — 设计系统
   深色 · 玻璃拟态 · Linear 冷峻风
   ============================================================ */
:root{
  --bg:#07070a; --bg-soft:#0d0d12;
  --panel:rgba(255,255,255,.045);
  --panel-2:rgba(255,255,255,.07);
  --stroke:rgba(255,255,255,.09);
  --stroke-2:rgba(255,255,255,.16);
  --txt:#eceef4; --muted:#9a9aae; --dim:#6b6b7d;
  --acc:#7c5cff; --acc2:#22d3ee;
  --grad:linear-gradient(135deg,#7c5cff 0%,#22d3ee 100%);
  --grad-soft:linear-gradient(135deg,rgba(124,92,255,.18),rgba(34,211,238,.14));
  --ok:#34d399; --warn:#fbbf24; --danger:#ff5c7a;
  --r:16px; --r2:22px; --r3:28px;
  --shadow:0 18px 50px -12px rgba(0,0,0,.65);
  --font:-apple-system,BlinkMacSystemFont,"SF Pro Display","Inter","PingFang SC","Microsoft YaHei",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font); background:var(--bg); color:var(--txt);
  line-height:1.65; -webkit-font-smoothing:antialiased; min-height:100vh;
  letter-spacing:.01em;
}
body::before{
  content:""; position:fixed; inset:0; z-index:-1; pointer-events:none;
  background:
    radial-gradient(900px 520px at 12% -8%, rgba(124,92,255,.16), transparent 60%),
    radial-gradient(760px 460px at 92% 4%, rgba(34,211,238,.11), transparent 62%),
    radial-gradient(680px 520px at 60% 108%, rgba(124,92,255,.09), transparent 60%);
}
a{color:inherit;text-decoration:none}
img{max-width:100%}

/* ---------- 布局 ---------- */
.wrap{max-width:1080px;margin:0 auto;padding:0 24px}
.wrap-sm{max-width:720px;margin:0 auto;padding:0 24px}
.center{display:flex;align-items:center;justify-content:center}
.row{display:flex;gap:14px;align-items:center}
.between{display:flex;justify-content:space-between;align-items:center;gap:16px}
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
@media(max-width:820px){.g2,.g3,.g4{grid-template-columns:1fr}}
.mt{margin-top:18px}.mt2{margin-top:32px}.mt3{margin-top:56px}
.muted{color:var(--muted)}.dim{color:var(--dim)}
.small{font-size:13px}.tiny{font-size:12px}
.center-txt{text-align:center}

/* ---------- 导航 ---------- */
.nav{
  position:sticky;top:0;z-index:60;
  backdrop-filter:blur(18px) saturate(160%);
  -webkit-backdrop-filter:blur(18px) saturate(160%);
  background:rgba(9,9,13,.62); border-bottom:1px solid var(--stroke);
}
.nav-inner{max-width:1080px;margin:0 auto;padding:14px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:-.01em}
.brand .dot{width:11px;height:11px;border-radius:50%;background:var(--grad);box-shadow:0 0 16px rgba(124,92,255,.7)}
.nav-links{display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.nav-links a{padding:8px 13px;border-radius:10px;color:var(--muted);font-size:14px;transition:.2s}
.nav-links a:hover{color:var(--txt);background:var(--panel)}
.nav-links a.active{color:var(--txt);background:var(--panel-2)}

/* ---------- 卡片 ---------- */
.card{
  background:var(--panel); border:1px solid var(--stroke); border-radius:var(--r2);
  padding:24px; backdrop-filter:blur(14px); -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow); position:relative; overflow:hidden;
}
.card.flat{box-shadow:none}
.card-soft{background:var(--panel);border:1px solid var(--stroke);border-radius:var(--r);padding:18px}
.card-hl{background:var(--grad-soft);border:1px solid var(--stroke-2);border-radius:var(--r2);padding:24px}
.glass-line::after{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.22),transparent)}

/* ---------- 文字 ---------- */
h1{font-size:clamp(34px,5.4vw,58px);font-weight:800;letter-spacing:-.03em;line-height:1.06}
h2{font-size:clamp(24px,3.4vw,34px);font-weight:750;letter-spacing:-.02em;line-height:1.15}
h3{font-size:19px;font-weight:680;letter-spacing:-.01em}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);
  border:1px solid var(--stroke);background:var(--panel);padding:6px 13px;border-radius:999px}
.grad-txt{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.lead{font-size:17.5px;color:var(--muted);line-height:1.7}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:12px;font-size:14.5px;font-weight:620;cursor:pointer;
  border:1px solid transparent;transition:.22s cubic-bezier(.2,.7,.3,1);white-space:nowrap;
}
.btn-primary{background:var(--grad);color:#0a0a12;box-shadow:0 10px 30px -8px rgba(124,92,255,.6)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 16px 40px -10px rgba(124,92,255,.75)}
.btn-ghost{background:var(--panel);border-color:var(--stroke-2);color:var(--txt)}
.btn-ghost:hover{background:var(--panel-2)}
.btn-danger{background:rgba(255,92,122,.14);border-color:rgba(255,92,122,.4);color:#ff9db0}
.btn-sm{padding:8px 15px;font-size:13px;border-radius:10px}
.btn:disabled{opacity:.5;cursor:not-allowed}

/* ---------- 表单 ---------- */
.field{margin-bottom:16px}
.field label{display:block;font-size:13.5px;color:var(--muted);margin-bottom:7px;font-weight:560}
.input,textarea,select{
  width:100%;padding:12px 15px;border-radius:12px;font-size:15px;font-family:var(--font);
  background:rgba(0,0,0,.32);border:1px solid var(--stroke);color:var(--txt);transition:.2s;
}
.input:focus,textarea:focus,select:focus{outline:none;border-color:var(--acc);box-shadow:0 0 0 4px rgba(124,92,255,.15)}
textarea{resize:vertical;min-height:120px;line-height:1.6}
select option{background:#14141b}

/* ---------- 徽章 / 标签 ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:999px;font-size:12px;font-weight:600;border:1px solid var(--stroke-2);background:var(--panel)}
.badge.ok{color:var(--ok);border-color:rgba(52,211,153,.35);background:rgba(52,211,153,.1)}
.badge.warn{color:var(--warn);border-color:rgba(251,191,36,.35);background:rgba(251,191,36,.1)}
.badge.danger{color:var(--danger);border-color:rgba(255,92,122,.4);background:rgba(255,92,122,.12)}
.badge.acc{color:var(--acc2);border-color:rgba(34,211,238,.35);background:rgba(34,211,238,.1)}
.chip{display:inline-block;padding:4px 10px;border-radius:8px;font-size:12.5px;background:var(--panel-2);border:1px solid var(--stroke);margin:3px 4px 0 0}

/* ---------- 安全提示条 ---------- */
.lockbar{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted);
  border:1px solid var(--stroke);background:var(--panel);border-radius:14px;padding:11px 16px}
.lockbar .ic{color:var(--ok)}

/* ---------- 度量表 ---------- */
.metric{font-size:32px;font-weight:760;letter-spacing:-.02em}
.metric-l{font-size:12.5px;color:var(--muted);text-transform:uppercase;letter-spacing:.1em}

/* ---------- 量表题目 ---------- */
.q{margin-bottom:14px;padding:16px 18px;border-radius:var(--r);background:var(--panel);border:1px solid var(--stroke)}
.q .qt{font-size:14.5px;margin-bottom:11px;line-height:1.5}
.opts{display:flex;gap:7px;flex-wrap:wrap}
.opt{position:relative}
.opt input{position:absolute;opacity:0;inset:0;cursor:pointer}
.opt span{display:inline-block;padding:7px 13px;border-radius:9px;font-size:13px;border:1px solid var(--stroke);
  background:rgba(0,0,0,.25);color:var(--muted);transition:.18s;cursor:pointer}
.opt input:checked + span{background:var(--grad);color:#0a0a12;border-color:transparent;font-weight:620}
.opt input:focus-visible + span{box-shadow:0 0 0 3px rgba(124,92,255,.3)}

/* ---------- 表格 ---------- */
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{padding:11px 13px;text-align:left;border-bottom:1px solid var(--stroke)}
th{color:var(--muted);font-weight:600;font-size:12.5px;text-transform:uppercase;letter-spacing:.06em}
tr:hover td{background:var(--panel)}
.scroll-x{overflow-x:auto}

/* ---------- 提示框 ---------- */
.alert{padding:14px 17px;border-radius:var(--r);font-size:14px;border:1px solid var(--stroke-2);background:var(--panel)}
.alert.ok{border-color:rgba(52,211,153,.35);background:rgba(52,211,153,.08);color:#a7f3d0}
.alert.err{border-color:rgba(255,92,122,.4);background:rgba(255,92,122,.1);color:#ffc2cf}
.alert.warn{border-color:rgba(251,191,36,.4);background:rgba(251,191,36,.1);color:#ffe6ab}
.alert.crisis{border-color:rgba(255,92,122,.5);background:rgba(255,92,122,.14);color:#ffd5dd}

/* ---------- 英雄区 ---------- */
.hero{padding:76px 0 46px}
.stat{display:flex;flex-direction:column;gap:2px}
.stat .n{font-size:26px;font-weight:750}

/* ---------- 时间线 ---------- */
.tl{position:relative;padding-left:26px}
.tl::before{content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;background:linear-gradient(180deg,var(--acc),transparent)}
.tl-item{position:relative;margin-bottom:18px}
.tl-item::before{content:"";position:absolute;left:-24px;top:6px;width:11px;height:11px;border-radius:50%;background:var(--grad);box-shadow:0 0 0 4px rgba(124,92,255,.14)}

/* ---------- 动效 ---------- */
@keyframes fadeUp{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.fade{animation:fadeUp .6s cubic-bezier(.2,.7,.3,1) both}
.d1{animation-delay:.05s}.d2{animation-delay:.12s}.d3{animation-delay:.2s}.d4{animation-delay:.28s}

/* ---------- 页脚 ---------- */
footer{margin-top:80px;padding:34px 0;border-top:1px solid var(--stroke);color:var(--dim);font-size:13px}
.foot-inner{max-width:1080px;margin:0 auto;padding:0 24px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.foot-inner a{color:var(--muted)}
.foot-inner a:hover{color:var(--txt)}