/* ==========================================================================
   评估智作 · 对外宣传站样式
   与产品内 app.css 共用同一套设计令牌(薰衣草渐变 + 毛玻璃 + 大圆角 + 胶囊按钮),
   这样客户从宣传页点进产品不会觉得换了家公司。
   ========================================================================== */

:root{
  --accent:#6b6bf0;--accent-2:#6ea8fe;--accent-deep:#4b5bd6;
  --grad:linear-gradient(135deg,#8b7ff0 0%,#6ea8fe 100%);
  --grad-soft:linear-gradient(135deg,rgba(139,127,240,.16),rgba(110,168,254,.16));
  --ink:#1b1d2b;--ink2:#3d4060;--muted:#5c608a;--faint:#8589ad;
  --glass:rgba(255,255,255,.62);
  --glass-strong:rgba(255,255,255,.86);
  --glass-thin:rgba(255,255,255,.42);
  --glass-line:rgba(255,255,255,.78);
  --hairline:rgba(110,120,185,.16);
  --ok:#0f7a56;--okbg:rgba(23,168,120,.14);
  --warn:#8a5300;--warnbg:rgba(245,166,35,.20);
  --danger:#c0342a;--dangerbg:rgba(225,70,55,.13);
  --info:#3f52c9;--infobg:rgba(110,168,254,.13);
  --r:26px;--r-md:18px;--r-sm:13px;
  --sh:0 8px 32px rgba(76,84,160,.13);
  --sh-lg:0 22px 60px rgba(76,84,160,.22);
  --sh-sm:0 3px 12px rgba(76,84,160,.10);
}

*{box-sizing:border-box;-webkit-font-smoothing:antialiased}
html{scroll-behavior:smooth}
body{
  margin:0;color:var(--ink);font-size:14px;line-height:1.68;
  font-family:"Inter","Microsoft YaHei","PingFang SC",-apple-system,"Segoe UI",sans-serif;
  background:
    radial-gradient(1100px 640px at 8% -12%,#f7f8ff 0%,rgba(247,248,255,0) 62%),
    radial-gradient(980px 620px at 102% -6%,#faf1ff 0%,rgba(250,241,255,0) 58%),
    radial-gradient(900px 700px at 88% 108%,#eef1ff 0%,rgba(238,241,255,0) 60%),
    linear-gradient(162deg,#eceefd 0%,#e6e9fc 46%,#dfe2f8 100%);
  background-attachment:fixed;
}
a{color:var(--accent-deep);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1120px;margin:0 auto;padding:0 26px}

/* ---------- 顶部导航 ---------- */
.nav{
  position:sticky;top:0;z-index:50;
  backdrop-filter:blur(18px) saturate(150%);
  background:rgba(255,255,255,.66);
  border-bottom:1px solid var(--hairline);
}
.nav .wrap{display:flex;align-items:center;gap:26px;height:66px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16px;color:var(--ink)}
.brand:hover{text-decoration:none}
.brand .dot{width:30px;height:30px;border-radius:10px;background:var(--grad);
  box-shadow:var(--sh-sm);display:grid;place-items:center;color:#fff;font-size:14px}
.nav-links{display:flex;gap:22px;margin-left:8px}
.nav-links a{color:var(--ink2);font-size:13.5px}
.nav-links a:hover{color:var(--accent-deep);text-decoration:none}
.nav-cta{margin-left:auto;display:flex;align-items:center;gap:12px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:999px;border:1px solid transparent;
  font-size:13.5px;font-weight:600;cursor:pointer;font-family:inherit;
  background:var(--ink);color:#fff;transition:.18s;white-space:nowrap;
}
.btn:hover{transform:translateY(-1px);box-shadow:var(--sh);text-decoration:none;color:#fff}
.btn.ghost{background:rgba(255,255,255,.7);color:var(--ink);border-color:var(--hairline)}
.btn.ghost:hover{background:#fff;color:var(--ink)}
.btn.grad{background:var(--grad);color:#fff}
.btn.lg{padding:14px 30px;font-size:14.5px}
.btn.block{width:100%}
.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none}

/* ---------- 首屏 ---------- */
.hero{padding:74px 0 56px;position:relative;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:-40% -10% auto -10%;height:640px;
  background:radial-gradient(520px 320px at 22% 40%,rgba(139,127,240,.20),rgba(139,127,240,0) 70%),
             radial-gradient(560px 340px at 78% 26%,rgba(110,168,254,.20),rgba(110,168,254,0) 70%);
  pointer-events:none;
}
.hero .wrap{position:relative;display:grid;grid-template-columns:1.08fr .92fr;gap:52px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:7px 15px;border-radius:999px;
  background:var(--glass-strong);border:1px solid var(--glass-line);
  font-size:12.5px;color:var(--accent-deep);font-weight:600;margin-bottom:20px;
}
.hero h1{font-size:42px;line-height:1.24;margin:0 0 18px;letter-spacing:-.6px}
.hero h1 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;
  background-clip:text;color:transparent}
.hero p.lead{font-size:16px;color:var(--muted);margin:0 0 28px;max-width:520px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.hero-note{font-size:12.5px;color:var(--faint);margin-top:14px}

.preview{
  background:var(--glass-strong);border:1px solid var(--glass-line);border-radius:var(--r);
  box-shadow:var(--sh-lg);padding:20px;backdrop-filter:blur(14px);
}
.preview .bar{display:flex;gap:6px;margin-bottom:14px}
.preview .bar i{width:9px;height:9px;border-radius:50%;background:rgba(110,120,185,.24)}
.preview .row{display:flex;justify-content:space-between;align-items:center;
  padding:11px 13px;border-radius:var(--r-sm);background:rgba(255,255,255,.72);
  border:1px solid var(--hairline);margin-bottom:8px;font-size:12.5px}
.preview .row b{font-weight:600}
.preview .row .v{font-variant-numeric:tabular-nums;color:var(--ink)}
.preview .big{font-size:22px;font-weight:700;font-variant-numeric:tabular-nums}
.preview .cap{font-size:11.5px;color:var(--faint);margin-bottom:4px}
.preview .pill{display:inline-block;padding:3px 10px;border-radius:999px;font-size:11px;
  background:var(--okbg);color:var(--ok);font-weight:600}

/* ---------- 通用区块 ---------- */
section{padding:64px 0}
.sec-head{text-align:center;max-width:660px;margin:0 auto 44px}
.sec-head h2{font-size:29px;margin:0 0 12px;letter-spacing:-.4px}
.sec-head p{color:var(--muted);margin:0;font-size:14.5px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.card{
  background:var(--glass);border:1px solid var(--glass-line);border-radius:var(--r-md);
  padding:26px;backdrop-filter:blur(12px);box-shadow:var(--sh-sm);
}
.card h3{margin:0 0 10px;font-size:16px}
.card p{margin:0;color:var(--muted);font-size:13.5px}
.card .ico{
  width:40px;height:40px;border-radius:13px;background:var(--grad-soft);
  display:grid;place-items:center;font-size:18px;margin-bottom:14px;
  border:1px solid var(--glass-line);
}

/* ---------- 价格 ---------- */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:start}
.plan{
  background:var(--glass-strong);border:1px solid var(--glass-line);border-radius:var(--r);
  padding:28px;box-shadow:var(--sh-sm);position:relative;
}
.plan.hi{border-color:rgba(107,107,240,.42);box-shadow:var(--sh-lg);transform:translateY(-6px)}
.plan .flag{
  position:absolute;top:-12px;left:28px;padding:5px 14px;border-radius:999px;
  background:var(--grad);color:#fff;font-size:11.5px;font-weight:600;
}
.plan h3{margin:0 0 4px;font-size:18px}
.plan .tag{color:var(--faint);font-size:12.5px;margin-bottom:18px}
.plan .price{font-size:34px;font-weight:700;letter-spacing:-1px;font-variant-numeric:tabular-nums}
.plan .price small{font-size:13px;font-weight:500;color:var(--muted);letter-spacing:0}
.plan .sub{font-size:12.5px;color:var(--faint);margin:4px 0 20px;min-height:18px}
.plan ul{list-style:none;padding:0;margin:0 0 24px;font-size:13px;color:var(--ink2)}
.plan li{padding:7px 0 7px 24px;position:relative;border-bottom:1px solid var(--hairline)}
.plan li:last-child{border-bottom:0}
.plan li::before{content:"✓";position:absolute;left:0;color:var(--accent);font-weight:700}

/* ---------- 表单 ---------- */
.auth{max-width:440px;margin:56px auto;padding:0 26px}
.panel{
  background:var(--glass-strong);border:1px solid var(--glass-line);border-radius:var(--r);
  padding:32px;box-shadow:var(--sh-lg);backdrop-filter:blur(14px);
}
.panel h2{margin:0 0 6px;font-size:22px}
.panel .sub{color:var(--muted);font-size:13.5px;margin-bottom:22px}
label{display:block;font-size:12.5px;font-weight:600;color:var(--ink2);margin:0 0 6px}
input,select,textarea{
  width:100%;padding:11px 13px;border-radius:var(--r-sm);font-size:13.5px;font-family:inherit;
  border:1px solid rgba(110,120,185,.24);background:rgba(255,255,255,.82);color:var(--ink);
  transition:.16s;
}
input:focus,select:focus,textarea:focus{
  outline:none;border-color:var(--accent);background:#fff;
  box-shadow:0 0 0 3px rgba(107,107,240,.14);
}
.field{margin-bottom:15px}
.hint{font-size:12px;color:var(--faint);margin-top:6px}
.err{font-size:12.5px;color:var(--danger);margin-top:6px;display:none}
.err.on{display:block}
.note{
  padding:12px 15px;border-radius:var(--r-sm);font-size:13px;
  background:var(--warnbg);color:var(--warn);border:1px solid rgba(245,166,35,.3);
}
.note.info{background:var(--infobg);color:var(--info);border-color:rgba(110,168,254,.3)}
.note.ok{background:var(--okbg);color:var(--ok);border-color:rgba(23,168,120,.3)}
.note.danger{background:var(--dangerbg);color:var(--danger);border-color:rgba(225,70,55,.28)}

/* ---------- 页脚 ---------- */
footer{
  border-top:1px solid var(--hairline);margin-top:40px;padding:34px 0;
  background:rgba(255,255,255,.44);font-size:12.5px;color:var(--muted);
}
footer .wrap{display:flex;justify-content:space-between;gap:26px;flex-wrap:wrap}
footer a{color:var(--muted)}
footer a:hover{color:var(--accent-deep)}
.foot-links{display:flex;gap:20px;flex-wrap:wrap}

/* ---------- 法律条款等长文 ---------- */
.doc{max-width:820px;margin:52px auto;padding:0 26px}
.doc h1{font-size:27px;margin:0 0 8px}
.doc .meta{color:var(--faint);font-size:12.5px;margin-bottom:28px}
.doc .body{
  background:var(--glass-strong);border:1px solid var(--glass-line);border-radius:var(--r);
  padding:34px;box-shadow:var(--sh-sm);
}
.doc h2{font-size:16.5px;margin:26px 0 10px}
.doc h2:first-child{margin-top:0}
.doc p,.doc li{color:var(--ink2);font-size:13.5px}
.doc ul{padding-left:20px}

/* ---------- 模态 ---------- */
.modal-overlay{
  position:fixed;inset:0;z-index:100;display:grid;place-items:center;padding:24px;
  background:rgba(28,30,52,.42);backdrop-filter:blur(5px);
}
.modal-overlay[hidden]{display:none}
.modal{
  background:var(--glass-strong);border:1px solid var(--glass-line);border-radius:var(--r);
  box-shadow:var(--sh-lg);padding:30px;width:100%;max-width:560px;max-height:88vh;
  overflow:auto;backdrop-filter:blur(18px);
}
.modal h2{margin:0 0 6px;font-size:20px}
.modal .m-sub{color:var(--muted);font-size:13px;margin-bottom:20px}
.modal-foot{display:flex;gap:10px;justify-content:flex-end;margin-top:24px}

table{width:100%;border-collapse:collapse;font-size:13px}
th{text-align:left;font-weight:600;color:var(--muted);font-size:12px;
  padding:9px 10px;border-bottom:1px solid var(--hairline)}
td{padding:11px 10px;border-bottom:1px solid var(--hairline);color:var(--ink2)}
tr:last-child td{border-bottom:0}
.num{text-align:right;font-variant-numeric:tabular-nums}
.badge{display:inline-block;padding:3px 10px;border-radius:999px;font-size:11.5px;font-weight:600}
.b-ok{background:var(--okbg);color:var(--ok)}
.b-warn{background:var(--warnbg);color:var(--warn)}
.b-err{background:var(--dangerbg);color:var(--danger)}
.b-info{background:var(--infobg);color:var(--info)}
.b-gray{background:rgba(110,120,185,.12);color:var(--muted)}

.toast{
  position:fixed;left:50%;bottom:34px;transform:translateX(-50%) translateY(20px);
  background:var(--ink);color:#fff;padding:12px 22px;border-radius:999px;font-size:13px;
  box-shadow:var(--sh-lg);opacity:0;transition:.24s;z-index:200;pointer-events:none;
}
.toast.on{opacity:1;transform:translateX(-50%) translateY(0)}
.toast.bad{background:var(--danger)}

@media(max-width:900px){
  .hero .wrap{grid-template-columns:1fr;gap:34px}
  .hero h1{font-size:32px}
  .grid3,.grid2,.plans{grid-template-columns:1fr}
  .plan.hi{transform:none}
  .nav-links{display:none}
}