/* ============================================================
   ai包拯 · 内容页共用样式
   官网首页 site/index.html 自带一套内联样式；这里只服务内容页。
   ============================================================ */

:root{
  --paper:#F8F3E7;
  --paper-2:#F1E8D5;
  --paper-3:#E8DCC2;
  --ink:#1A1A1F;
  --ink-2:#3A3A44;
  --muted:#6E6858;
  --cinnabar:#B93A2E;
  --cinnabar-2:#D1483A;
  --cinnabar-deep:#7E1F18;
  --gold:#9A7720;
  --gold-lit:#D4AE4A;
  --line:rgba(26,26,31,.13);
  --line-strong:rgba(26,26,31,.24);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong",SimSun,serif;
  --sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --ease:cubic-bezier(.22,.9,.24,1);
  --spring:cubic-bezier(.16,1.1,.3,1);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--paper);color:var(--ink);
  font-family:var(--sans);font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img,svg{max-width:100%}
.wrap{max-width:1180px;margin:0 auto;padding:0 28px}
.serif{font-family:var(--serif)}

body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.55;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.72' numOctaves='4'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)' opacity='.085'/%3E%3C/svg%3E");
  mix-blend-mode:multiply;
}
header,footer,main{position:relative;z-index:1}

/* ---------- 导航 ---------- */
header{
  position:sticky;top:0;z-index:60;
  background:rgba(248,243,231,.82);backdrop-filter:blur(16px) saturate(1.15);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;gap:36px;height:74px}
.logo{display:flex;align-items:center;gap:11px;font-family:var(--serif);font-weight:900;font-size:21px;letter-spacing:.02em;color:var(--ink)}
.logo svg{width:30px;height:30px;flex:none;color:var(--cinnabar);filter:drop-shadow(0 2px 4px rgba(185,58,46,.22))}
.logo small{font-family:var(--sans);font-size:11px;font-weight:400;color:var(--muted);letter-spacing:.18em;margin-left:2px;padding-left:11px;border-left:1px solid var(--line)}
.nav-links{display:flex;gap:30px;margin-left:auto;font-size:14.5px;color:var(--muted)}
.nav-links a{transition:color .2s;position:relative}
.nav-links a:hover,.nav-links a.on{color:var(--ink)}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-6px;width:0;height:1.5px;background:var(--cinnabar);transition:width .3s var(--ease)}
.nav-links a:hover::after,.nav-links a.on::after{width:100%}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;border-radius:2px;font-size:15px;font-weight:600;
  transition:all .3s var(--ease);cursor:pointer;border:1px solid transparent;white-space:nowrap;
}
.btn-primary{background:linear-gradient(180deg,#C84436,#A32E23);color:#fff;box-shadow:0 2px 0 rgba(126,31,24,.5),0 8px 18px rgba(185,58,46,.22)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 3px 0 rgba(126,31,24,.5),0 14px 26px rgba(185,58,46,.28)}
.btn-ghost{border-color:var(--line-strong);color:var(--ink-2);background:transparent}
.btn-ghost:hover{border-color:var(--ink);color:var(--ink)}

/* ---------- 页头 ---------- */
.page-head{padding:96px 0 64px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,rgba(241,232,213,.6),transparent)}
.eyebrow{font-size:12.5px;letter-spacing:.34em;color:var(--gold);font-weight:600;margin-bottom:22px}
.page-head h1{font-family:var(--serif);font-size:clamp(34px,5.2vw,58px);line-height:1.16;letter-spacing:-.01em;font-weight:900}
.page-head h1 em{font-style:normal;color:var(--cinnabar-deep)}
.page-head .sub{margin-top:22px;font-size:17.5px;color:var(--muted);max-width:640px;line-height:1.85}
.page-head .meta{margin-top:30px;display:flex;gap:34px;flex-wrap:wrap;font-size:13.5px;color:var(--muted)}
.page-head .meta b{display:block;font-family:var(--serif);font-size:19px;color:var(--ink);letter-spacing:.02em}

/* ---------- 区块 ---------- */
.sec{padding:86px 0}
.sec.tight{padding:64px 0}
.sec-label{font-size:12px;letter-spacing:.34em;color:var(--gold);font-weight:600;margin-bottom:16px}
.sec-title{font-family:var(--serif);font-size:clamp(24px,3.4vw,36px);line-height:1.35;font-weight:800;letter-spacing:-.005em}
.sec-title b{color:var(--cinnabar-deep)}
.sec-sub{margin-top:16px;color:var(--muted);font-size:15.5px;max-width:660px}
.sec-head{margin-bottom:46px}

/* ---------- 卡片 ---------- */
.grid{display:grid;gap:22px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{
  background:#FFFDF7;border:1px solid var(--line);border-radius:3px;padding:28px 26px;
  transition:transform .35s var(--spring),box-shadow .35s var(--ease),border-color .3s;
}
.card:hover{transform:translateY(-4px);box-shadow:0 18px 40px -18px rgba(26,26,31,.3);border-color:var(--line-strong)}
.card .kicker{font-size:11.5px;letter-spacing:.22em;color:var(--gold);font-weight:600;margin-bottom:12px}
.card h3{font-family:var(--serif);font-size:20px;line-height:1.4;margin-bottom:10px;font-weight:800}
.card p{font-size:14.5px;color:var(--muted);line-height:1.8}
.card ul{list-style:none;margin-top:14px}
.card li{font-size:14px;color:var(--ink-2);padding:7px 0 7px 18px;position:relative;border-top:1px dashed rgba(26,26,31,.09)}
.card li:first-child{border-top:0}
.card li::before{content:"";position:absolute;left:0;top:15px;width:6px;height:6px;background:var(--cinnabar);border-radius:1px;transform:rotate(45deg)}

/* ---------- 卷宗 ---------- */
.dossier{
  background:#FFFDF7;border:1px solid var(--line);border-radius:3px;padding:26px 26px 22px;
  position:relative;transition:transform .35s var(--spring),box-shadow .35s var(--ease);
}
.dossier:hover{transform:translateY(-4px);box-shadow:0 18px 40px -18px rgba(26,26,31,.3)}
.dossier .ind{font-size:11.5px;letter-spacing:.2em;color:var(--gold);font-weight:600;margin-bottom:10px}
.dossier h3{font-family:var(--serif);font-size:19px;line-height:1.45;margin-bottom:12px}
.dossier p{font-size:13.8px;color:var(--muted);line-height:1.8}
.dossier .metric{margin-top:16px;font-family:var(--serif);font-size:30px;color:var(--cinnabar-deep);font-weight:900;line-height:1}
.dossier .metric span{display:block;font-family:var(--sans);font-size:11.5px;color:var(--muted);letter-spacing:.16em;margin-top:7px;font-weight:400}
.dossier .stamp{
  position:absolute;right:18px;top:18px;width:52px;height:52px;border:2px solid rgba(185,58,46,.45);
  border-radius:50%;display:grid;place-items:center;color:rgba(185,58,46,.6);
  font-family:var(--serif);font-size:15px;letter-spacing:-.04em;transform:rotate(-11deg);
}

/* ---------- 表格 ---------- */
.tbl{width:100%;border-collapse:collapse;background:#FFFDF7;border:1px solid var(--line);font-size:14.5px}
.tbl th,.tbl td{padding:15px 18px;text-align:left;border-bottom:1px solid rgba(26,26,31,.08);vertical-align:top}
.tbl th{font-size:12px;letter-spacing:.16em;color:var(--muted);font-weight:600;background:rgba(241,232,213,.5)}
.tbl tr:last-child td{border-bottom:0}
.tbl td b{font-family:var(--serif);font-size:17px;color:var(--cinnabar-deep)}

/* ---------- 定价 ---------- */
.price{background:#FFFDF7;border:1px solid var(--line);border-radius:3px;padding:26px 24px;text-align:center;transition:.3s}
.price:hover{border-color:var(--cinnabar);transform:translateY(-3px)}
.price .name{font-size:12px;letter-spacing:.22em;color:var(--muted)}
.price .amt{font-family:var(--serif);font-size:32px;font-weight:900;color:var(--cinnabar-deep);margin:12px 0 6px;line-height:1}
.price .amt small{font-size:14px;font-family:var(--sans);font-weight:400;color:var(--muted)}
.price .note{font-size:12.5px;color:var(--muted);margin-top:12px;line-height:1.7}

/* ---------- 提示条 ---------- */
.note-band{
  background:rgba(185,58,46,.06);border:1px solid rgba(185,58,46,.22);
  border-left:3px solid var(--cinnabar);border-radius:0 3px 3px 0;
  padding:18px 22px;font-size:14px;color:var(--cinnabar-deep);line-height:1.8;
}

/* ---------- 浅色衬底带 ---------- */
.tint{background:linear-gradient(180deg,transparent,rgba(241,232,213,.5),transparent)}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:10px}
.step{padding:0 24px;border-left:1px solid var(--line)}
.step:first-child{border-left:0;padding-left:0}
.step .no{font-family:var(--serif);font-size:13px;letter-spacing:.2em;color:var(--gold);font-weight:700}
.step h4{font-family:var(--serif);font-size:19px;margin:10px 0 8px}
.step p{font-size:14px;color:var(--muted);line-height:1.8}

/* ---------- 表单 ---------- */
.form-card{background:#FFFDF7;border:1px solid var(--line);border-radius:3px;padding:34px 32px;max-width:560px}
.form-card h3{font-family:var(--serif);font-size:22px;margin-bottom:6px}
.form-card .hint{font-size:13px;color:var(--muted);margin-bottom:24px}
.field{margin-bottom:16px}
.field input,.field textarea{
  width:100%;padding:13px 14px;border:1px solid var(--line-strong);border-radius:2px;
  font-family:inherit;font-size:15px;background:var(--paper);color:var(--ink);outline:none;transition:.2s;
}
.field textarea{min-height:96px;resize:vertical;line-height:1.7}
.field input:focus,.field textarea:focus{border-color:var(--cinnabar);background:#fff}
.field-err{color:var(--cinnabar-2);font-size:12px;margin-top:6px;display:none}
.field.bad input,.field.bad textarea{border-color:var(--cinnabar-2);box-shadow:0 0 0 3px rgba(209,72,58,.15)}
.field.bad .field-err{display:block}

/* ---------- 页脚 ---------- */
footer{padding:66px 0 46px;border-top:1px solid var(--line);background:linear-gradient(180deg,var(--paper-2),#EBE0C9)}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;margin-bottom:48px}
.foot-grid h4{font-size:13px;letter-spacing:.18em;color:var(--gold);margin-bottom:18px;font-weight:700}
.foot-grid a,.foot-grid p{display:block;font-size:14px;color:var(--muted);margin-bottom:11px;transition:color .2s}
.foot-grid a:hover{color:var(--ink)}
.foot-bottom{border-top:1px solid var(--line);padding-top:24px;display:flex;justify-content:space-between;font-size:12.5px;color:rgba(110,104,88,.85);gap:14px;flex-wrap:wrap}

/* ---------- 右侧悬浮 ---------- */
.side-rail{position:fixed;right:14px;top:50%;transform:translateY(-50%);z-index:90;display:flex;flex-direction:column;gap:7px}
.rail-btn{
  width:58px;padding:11px 0;border:1px solid var(--line-strong);border-radius:3px;
  background:linear-gradient(180deg,#FFFDF7,#F1E7D3);color:var(--ink-2);
  font-family:var(--serif);font-size:12.5px;font-weight:700;letter-spacing:.08em;
  cursor:pointer;box-shadow:0 6px 18px rgba(26,26,31,.10);
  transition:transform .25s var(--ease),background .25s,color .25s,border-color .25s;
  display:flex;flex-direction:column;align-items:center;gap:5px;
}
.rail-btn svg{width:19px;height:19px}
.rail-btn:hover{background:linear-gradient(180deg,#C84436,#A32E23);color:#fff;border-color:#7E1F18;transform:translateX(-3px)}

.qr-pop{
  position:fixed;right:84px;top:50%;z-index:91;
  background:#FFFDF7;border:1px solid var(--line-strong);padding:13px 13px 11px;border-radius:4px;
  box-shadow:0 24px 60px rgba(26,26,31,.24);opacity:0;pointer-events:none;
  transform:translateY(-50%) translateX(10px) scale(.97);
  transition:opacity .28s var(--ease),transform .32s var(--spring);text-align:center;
}
.qr-pop.on{opacity:1;pointer-events:auto;transform:translateY(-50%) translateX(0) scale(1)}
.qr-pop img{width:176px;height:auto;display:block;border:1px solid var(--line)}
.qr-pop p{margin-top:9px;font-size:12px;color:var(--muted);letter-spacing:.06em}
.qr-pop::after{
  content:"";position:absolute;right:-6px;top:50%;width:11px;height:11px;margin-top:-5px;
  background:#FFFDF7;border-right:1px solid var(--line-strong);border-top:1px solid var(--line-strong);
  transform:rotate(45deg);
}

.to-top{
  position:fixed;right:14px;bottom:24px;z-index:90;width:58px;height:52px;border-radius:3px;
  border:1px solid var(--line-strong);background:linear-gradient(180deg,#FFFDF7,#F1E7D3);
  color:var(--ink-2);cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
  font-family:var(--serif);font-size:11.5px;font-weight:700;letter-spacing:.08em;
  box-shadow:0 6px 18px rgba(26,26,31,.10);
  opacity:0;pointer-events:none;transform:translateY(10px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),background .25s,color .25s;
}
.to-top.show{opacity:1;pointer-events:auto;transform:none}
.to-top:hover{background:linear-gradient(180deg,#C84436,#A32E23);color:#fff;border-color:#7E1F18}

/* ---------- 在线客服 ---------- */
.chat-panel{
  position:fixed;right:84px;bottom:24px;z-index:95;width:346px;height:min(530px,74vh);padding:0;
  background:linear-gradient(180deg,#FFFDF7,#F7F1E2);border:1px solid var(--line-strong);
  border-radius:5px;box-shadow:0 30px 70px rgba(26,26,31,.26);
  display:flex;flex-direction:column;overflow:hidden;
  opacity:0;pointer-events:none;transform:translateY(14px) scale(.98);
  transition:opacity .3s var(--ease),transform .34s var(--spring);
}
.chat-panel.on{opacity:1;pointer-events:auto;transform:none}
.chat-head{display:flex;align-items:center;gap:10px;padding:13px 15px;background:linear-gradient(180deg,#2C2118,#1A1410);color:#F0D98C;flex:none}
.chat-head svg{width:26px;height:26px;color:#E6D6B4;flex:none}
.chat-head b{font-family:var(--serif);font-size:15px;letter-spacing:.06em}
.chat-head span{font-size:10.5px;color:rgba(240,217,140,.6);letter-spacing:.14em;margin-left:auto}
.chat-head button{background:none;border:0;color:rgba(240,217,140,.7);font-size:18px;cursor:pointer;line-height:1;padding:2px 4px}
.chat-head button:hover{color:#fff}
.chat-log{flex:1;overflow-y:auto;padding:16px 14px;display:flex;flex-direction:column;gap:10px}
.msg{max-width:82%;padding:9px 13px;border-radius:10px;font-size:14px;line-height:1.65;white-space:pre-wrap;word-break:break-word}
.msg.bot{background:#fff;border:1px solid var(--line);color:var(--ink-2);border-bottom-left-radius:3px;align-self:flex-start}
.msg.me{background:linear-gradient(180deg,#C84436,#A32E23);color:#fff;border-bottom-right-radius:3px;align-self:flex-end}
.msg.tip{background:rgba(185,58,46,.07);border:1px dashed rgba(185,58,46,.35);color:var(--cinnabar-deep);font-size:12.5px;align-self:stretch;max-width:100%}
.msg.admin{background:#FFF8E9;border:1px solid rgba(154,119,32,.5);color:var(--ink);border-bottom-left-radius:3px;align-self:flex-start}
.msg-label{display:block;font-size:10.5px;letter-spacing:.12em;color:var(--gold);margin-bottom:3px}
.chat-quick{flex:none;display:flex;gap:6px;flex-wrap:wrap;padding:8px 10px 0;background:transparent}
.chat-quick button{font-size:12px;padding:6px 11px;border-radius:99px;border:1px solid var(--line-strong);background:#fff;color:var(--ink-2);cursor:pointer;font-family:inherit;transition:.15s}
.chat-quick button:hover{border-color:var(--cinnabar);color:var(--cinnabar-deep)}
.rail-btn{position:relative}
.rail-dot{position:absolute;top:4px;right:6px;width:8px;height:8px;border-radius:50%;background:#D1483A;box-shadow:0 0 0 3px rgba(209,72,58,.2);opacity:0;transform:scale(.5);transition:opacity .2s,transform .2s}
.rail-dot.on{opacity:1;transform:none}
.chat-foot{flex:none;border-top:1px solid var(--line);padding:10px;display:flex;gap:8px;background:rgba(255,253,247,.9)}
.chat-foot input{flex:1;border:1px solid var(--line-strong);border-radius:3px;padding:10px 12px;font-size:14px;font-family:var(--sans);background:#fff;outline:none;color:var(--ink)}
.chat-foot input:focus{border-color:var(--cinnabar)}
.chat-foot button{border:0;border-radius:3px;padding:0 16px;background:linear-gradient(180deg,#C84436,#A32E23);color:#fff;font-size:14px;font-weight:600;cursor:pointer;font-family:inherit}
.chat-foot button:disabled{opacity:.55;cursor:default}

/* ---------- toast ---------- */
.toast{
  position:fixed;left:50%;bottom:44px;transform:translateX(-50%) translateY(16px);z-index:200;
  background:linear-gradient(180deg,#2C2118,#1A1410);color:#F3E9D2;border:1px solid #6E5327;
  padding:13px 22px;border-radius:3px;font-size:14px;letter-spacing:.03em;
  box-shadow:0 20px 46px rgba(26,26,31,.34);opacity:0;pointer-events:none;
  transition:opacity .32s var(--ease),transform .36s var(--spring);
  display:flex;align-items:center;gap:10px;
}
.toast.on{opacity:1;transform:translateX(-50%)}
.toast .dot{width:8px;height:8px;border-radius:50%;background:#7BC47F;flex:none;box-shadow:0 0 0 4px rgba(123,196,127,.18)}
.toast.err .dot{background:#D1483A;box-shadow:0 0 0 4px rgba(209,72,58,.18)}

/* ---------- 响应式 ---------- */
@media (max-width:980px){
  .g3,.g4,.steps{grid-template-columns:1fr 1fr}
  .step{border-left:0;padding:0 0 26px}
  .step:first-child{padding-left:0}
  .foot-grid{grid-template-columns:1fr 1fr}
  .nav-links{display:none}
  .page-head{padding:64px 0 46px}
  .sec{padding:64px 0}
  .form-card{padding:26px 22px}
}
@media (max-width:700px){
  .g2,.g3,.g4,.steps{grid-template-columns:1fr}
  .side-rail{right:9px;gap:6px}
  .rail-btn{width:46px;padding:9px 0;font-size:11px;gap:4px}
  .rail-btn svg{width:17px;height:17px}
  .qr-pop{right:9px;left:9px;top:auto;bottom:64px;transform:translateY(10px) scale(.97)}
  .qr-pop.on{transform:none}
  .qr-pop::after{display:none}
  .to-top{right:9px;bottom:10px;width:46px;height:44px;font-size:11px}
  .chat-panel{right:9px;left:9px;bottom:9px;width:auto;height:min(74vh,560px)}
  .chat-log{padding:14px 12px}
  .msg{max-width:88%;font-size:13.5px}
  .toast{left:16px;right:16px;transform:translateY(16px);justify-content:center;text-align:center}
  .toast.on{transform:none}
  .nav{gap:14px;height:64px}
  .logo{font-size:18px}
  .logo small{display:none}
  .btn{padding:11px 18px;font-size:14px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:.01ms!important}
}