:root{
    --navy:#1E3A5F;
    --navy-deep:#16293F;
    --navy-soft:#2C4F78;
    --green:#1A5F4A;
    --gold:#B0894A;
    --gold-soft:#F4ECDB;
    --paper:#F5F3EE;
    --surface:#FFFFFF;
    --surface-2:#FBF9F4;
    --ink:#1B2735;
    --ink-2:#59636F;
    --ink-3:#9AA2AC;
    --line:#E7E2D6;
    --line-soft:#F0ECE3;
    --radius:16px;
    --wrap:1120px;
  }
  *{margin:0;padding:0;box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",sans-serif;
    background:var(--paper);
    color:var(--ink);
    font-size:16px;
    line-height:1.8;
    letter-spacing:.01em;
    -webkit-font-smoothing:antialiased;
  }
  a{color:inherit;text-decoration:none;}
  img{max-width:100%;display:block;}
  .wrap{max-width:var(--wrap);margin:0 auto;padding:0 28px;}

  /* ---------- 顶部导航 ---------- */
  header{
    position:sticky;top:0;z-index:60;
    background:rgba(245,243,238,.92);
    backdrop-filter:saturate(180%) blur(12px);
    border-bottom:1px solid var(--line);
  }
  .nav{display:flex;align-items:center;justify-content:space-between;height:72px;}
  .brand{display:flex;align-items:center;gap:12px;}
  .brand img{width:34px;height:34px;}
  .brand .wordmark{font-size:21px;font-weight:700;color:var(--navy);letter-spacing:.14em;}
  .brand .wordmark small{
    display:block;font-size:9px;font-weight:500;letter-spacing:.28em;
    color:var(--ink-3);margin-top:1px;
  }
  .nav-links{display:flex;gap:36px;font-size:15px;color:var(--ink-2);}
  .nav-links a{position:relative;padding:6px 0;transition:color .2s;}
  .nav-links a::after{
    content:'';position:absolute;left:0;bottom:0;width:0;height:1px;
    background:var(--gold);transition:width .25s;
  }
  .nav-links a:hover{color:var(--navy);}
  .nav-links a:hover::after{width:100%;}
  .nav-cta{
    display:inline-flex;align-items:center;gap:7px;
    border:1px solid var(--navy);color:var(--navy);
    font-size:14px;padding:9px 20px;border-radius:999px;
    transition:background .22s,color .22s;
  }
  .nav-cta:hover{background:var(--navy);color:#fff;}

  /* ---------- Hero ---------- */
  .hero{
    background:
      radial-gradient(1100px 480px at 78% -12%,rgba(176,137,74,.20),transparent 62%),
      linear-gradient(158deg,var(--navy-deep) 0%,var(--navy) 52%,var(--navy-soft) 100%);
    color:#fff;
    padding:96px 0 84px;
    position:relative;
    overflow:hidden;
  }
  .hero::before{
    content:'';position:absolute;inset:0;
    background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                     linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
    background-size:52px 52px;
    mask-image:linear-gradient(180deg,rgba(0,0,0,.55),transparent 78%);
    -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.55),transparent 78%);
  }
  .hero .wrap{position:relative;}
  .eyebrow{
    display:inline-flex;align-items:center;gap:9px;
    font-size:13px;letter-spacing:.18em;color:rgba(255,255,255,.78);
    border:1px solid rgba(255,255,255,.22);
    padding:6px 16px;border-radius:999px;
  }
  .eyebrow::before{content:'';width:5px;height:5px;border-radius:50%;background:var(--gold);}
  .hero h1{
    font-size:clamp(32px,4.6vw,54px);
    line-height:1.22;
    font-weight:800;
    letter-spacing:.06em;
    margin-top:30px;
  }
  .hero h1 em{font-style:normal;color:var(--gold);}
  .hero .lede{
    margin-top:24px;max-width:640px;
    font-size:17px;line-height:1.95;color:rgba(255,255,255,.86);
  }
  .hero .fine{
    margin-top:14px;font-size:14px;color:rgba(255,255,255,.58);letter-spacing:.02em;
  }
  .entries{display:flex;gap:18px;margin-top:42px;flex-wrap:wrap;}
  .entry{
    flex:1;min-width:250px;
    background:rgba(255,255,255,.06);
    border:1px solid rgba(255,255,255,.15);
    border-radius:var(--radius);
    padding:26px 28px;
    transition:background .25s,transform .25s,border-color .25s;
  }
  .entry:hover{background:rgba(255,255,255,.11);border-color:rgba(176,137,74,.55);transform:translateY(-3px);}
  .entry .tag{font-size:12px;letter-spacing:.2em;color:var(--gold);}
  .entry h3{font-size:19px;font-weight:700;margin-top:10px;letter-spacing:.04em;}
  .entry p{font-size:14px;color:rgba(255,255,255,.74);margin-top:10px;line-height:1.8;}

  /* ---------- 通用 section ---------- */
  section{padding:88px 0;}
  .sec-head{max-width:660px;}
  .sec-num{font-size:12px;letter-spacing:.24em;color:var(--gold);font-weight:600;}
  .sec-head h2{
    font-size:clamp(24px,2.8vw,32px);font-weight:800;color:var(--navy);
    letter-spacing:.05em;margin-top:14px;line-height:1.35;
  }
  .sec-head p{margin-top:16px;font-size:15px;color:var(--ink-2);line-height:1.9;}
  .rule{width:44px;height:2px;background:var(--gold);margin-top:22px;}

  /* ---------- 服务类目 ---------- */
  .cats{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:48px;}
  .cat{
    background:var(--surface);
    border:1px solid var(--line-soft);
    border-radius:var(--radius);
    padding:30px 28px 32px;
    transition:box-shadow .25s,transform .25s,border-color .25s;
  }
  .cat:hover{box-shadow:0 14px 40px rgba(27,39,53,.07);transform:translateY(-4px);border-color:var(--line);}
  .cat .idx{font-size:12px;letter-spacing:.2em;color:var(--ink-3);}
  .cat h3{font-size:19px;font-weight:700;color:var(--navy);margin-top:12px;letter-spacing:.04em;}
  .cat .items{font-size:14px;color:var(--ink-2);margin-top:10px;line-height:1.9;}
  .cat .note{
    margin-top:16px;padding-top:14px;border-top:1px dashed var(--line);
    font-size:13px;color:var(--green);
  }
  .cats-foot{
    margin-top:26px;font-size:13px;color:var(--ink-3);line-height:1.9;
  }

  /* ---------- 入口卡片链接 ---------- */
  .entry-link{
    display:inline-block;margin-top:16px;
    font-size:13.5px;color:var(--gold);letter-spacing:.04em;
    border-bottom:1px solid rgba(176,137,74,.5);padding-bottom:2px;
  }
  .entry-link:hover{color:#fff;border-color:#fff;}

  /* ---------- 服务广场（第三方发布者） ---------- */
  .plaza{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:48px;}
  .helper{
    background:var(--surface);border:1px solid var(--line-soft);border-radius:var(--radius);
    padding:24px 24px 22px;display:flex;flex-direction:column;gap:12px;
    transition:box-shadow .25s,transform .25s,border-color .25s;
  }
  .helper:hover{box-shadow:0 14px 40px rgba(27,39,53,.08);transform:translateY(-4px);border-color:var(--line);}
  .helper .who{display:flex;align-items:center;gap:12px;}
  .helper .avatar{
    width:44px;height:44px;border-radius:50%;flex:0 0 auto;
    display:flex;align-items:center;justify-content:center;
    background:linear-gradient(140deg,var(--navy),var(--navy-soft));
    color:#fff;font-size:17px;font-weight:700;
  }
  .helper .nick{font-size:16px;font-weight:700;color:var(--navy);}
  .helper .meta{font-size:12.5px;color:var(--ink-3);margin-top:2px;}
  .helper .svc{font-size:14px;color:var(--ink);line-height:1.8;}
  .helper .price{font-size:15px;font-weight:700;color:var(--green);}
  .helper .rating{font-size:13px;color:var(--ink-2);}
  .helper .rating b{color:var(--gold);}
  .helper .go{
    margin-top:auto;padding-top:14px;border-top:1px dashed var(--line);
    font-size:13.5px;color:var(--navy);font-weight:600;
  }
  .plaza-foot{margin-top:26px;font-size:13px;color:var(--ink-3);line-height:1.9;}

  /* ---------- 入驻五步 ---------- */
  .join{background:var(--surface-2);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);}
  .steps5{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;margin-top:46px;}
  .s5{background:var(--surface);border:1px solid var(--line-soft);border-radius:14px;padding:22px 20px 24px;}
  .s5 .n{width:30px;height:30px;border-radius:50%;background:var(--navy);color:#fff;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;}
  .s5 h4{font-size:15.5px;font-weight:700;color:var(--navy);margin-top:14px;letter-spacing:.03em;}
  .s5 p{font-size:13px;color:var(--ink-2);margin-top:8px;line-height:1.8;}
  .join-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:30px;}
  .btn{
    display:inline-flex;align-items:center;gap:8px;
    background:var(--navy);color:#fff;font-size:14.5px;font-weight:600;
    padding:13px 26px;border-radius:999px;transition:background .22s;
  }
  .btn:hover{background:var(--navy-soft);}
  .btn.ghost{background:transparent;color:var(--navy);border:1px solid var(--navy);}
  .btn.ghost:hover{background:var(--navy);color:#fff;}
  .join-note{margin-top:20px;font-size:13px;color:var(--ink-3);line-height:1.9;}
  .join-note a{color:var(--navy);border-bottom:1px solid var(--line);}

  /* ---------- 平台保障 ---------- */
  .trust{background:var(--surface-2);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);}
  .t4{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;margin-top:48px;background:var(--line-soft);border:1px solid var(--line-soft);border-radius:var(--radius);overflow:hidden;}
  .t4 .item{background:var(--surface);padding:34px 28px 36px;}
  .t4 .item .n{
    width:38px;height:38px;border-radius:50%;
    border:1px solid var(--navy);color:var(--navy);
    display:flex;align-items:center;justify-content:center;
    font-size:14px;font-weight:700;letter-spacing:.02em;
  }
  .t4 .item h3{font-size:17px;font-weight:700;color:var(--navy);margin-top:20px;letter-spacing:.04em;}
  .t4 .item p{font-size:13.5px;color:var(--ink-2);margin-top:10px;line-height:1.85;}

  /* ---------- 服务流程 ---------- */
  .flow{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:52px;position:relative;}
  .step{padding:0 26px;position:relative;}
  .step:not(:last-child)::after{
    content:'';position:absolute;top:15px;right:-6px;width:12px;height:1px;background:var(--line);
  }
  .step .dot{
    width:32px;height:32px;border-radius:50%;
    background:var(--navy);color:#fff;
    display:flex;align-items:center;justify-content:center;
    font-size:13px;font-weight:700;
  }
  .step h3{font-size:17px;font-weight:700;color:var(--navy);margin-top:20px;letter-spacing:.04em;}
  .step p{font-size:13.5px;color:var(--ink-2);margin-top:10px;line-height:1.85;}
  .flow-note{
    margin-top:44px;background:var(--gold-soft);
    border-left:3px solid var(--gold);
    border-radius:0 12px 12px 0;
    padding:20px 24px;font-size:14px;color:var(--ink);line-height:1.9;
  }
  .flow-note strong{color:var(--navy);}

  /* ---------- 关于 ---------- */
  .about{background:var(--surface);border-top:1px solid var(--line-soft);}
  .about-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:56px;margin-top:46px;align-items:start;}
  .about-copy p{font-size:15.5px;color:var(--ink);line-height:2;margin-bottom:18px;}
  .about-copy p:last-child{margin-bottom:0;}
  .info-card{
    background:var(--paper);border:1px solid var(--line);
    border-radius:var(--radius);padding:30px 30px 26px;
  }
  .info-card .row{display:flex;justify-content:space-between;gap:18px;padding:13px 0;border-bottom:1px dashed var(--line);font-size:14px;}
  .info-card .row:last-child{border-bottom:none;}
  .info-card .k{color:var(--ink-3);white-space:nowrap;}
  .info-card .v{color:var(--ink);font-weight:600;text-align:right;}

  /* ---------- FAQ ---------- */
  .faq-list{margin-top:44px;border-top:1px solid var(--line);}
  details{border-bottom:1px solid var(--line);}
  summary{
    list-style:none;cursor:pointer;
    padding:24px 44px 24px 0;position:relative;
    font-size:16.5px;font-weight:600;color:var(--navy);letter-spacing:.02em;
  }
  summary::-webkit-details-marker{display:none;}
  summary::after{
    content:'';position:absolute;right:6px;top:50%;
    width:9px;height:9px;border-right:1.5px solid var(--gold);border-bottom:1.5px solid var(--gold);
    transform:translateY(-70%) rotate(45deg);transition:transform .25s;
  }
  details[open] summary::after{transform:translateY(-30%) rotate(-135deg);}
  details .ans{padding:0 60px 26px 0;font-size:14.5px;color:var(--ink-2);line-height:1.95;}

  /* ---------- 页脚 ---------- */
  footer{background:var(--navy-deep);color:rgba(255,255,255,.74);padding:64px 0 34px;font-size:14px;}
  .f-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:44px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.12);}
  .f-brand .wordmark{font-size:20px;color:#fff;font-weight:700;letter-spacing:.14em;}
  .f-brand .slogan{font-size:13px;color:var(--gold);letter-spacing:.14em;margin-top:8px;}
  .f-brand p{font-size:13.5px;line-height:1.95;margin-top:18px;max-width:400px;color:rgba(255,255,255,.62);}
  .f-col h4{font-size:13px;letter-spacing:.16em;color:rgba(255,255,255,.55);font-weight:600;margin-bottom:16px;}
  .f-col p,.f-col a{display:block;font-size:13.5px;line-height:2.1;color:rgba(255,255,255,.76);}
  .f-col a:hover{color:#fff;}
  .f-bottom{padding-top:26px;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:12.5px;color:rgba(255,255,255,.5);}
  .f-bottom .filings{display:flex;gap:18px;flex-wrap:wrap;align-items:center;}
  .f-bottom .filings a{display:inline-flex;align-items:center;gap:6px;}
  .f-bottom .filings .police-icon{display:block;height:18px;width:auto;flex:0 0 auto;}
  .f-bottom a:hover{color:#fff;}

  @media(max-width:1100px){
    .plaza{grid-template-columns:repeat(2,1fr);}
    .steps5{grid-template-columns:repeat(3,1fr);}
    .f-top{grid-template-columns:1fr 1fr;}
  }
  @media(max-width:980px){
    .cats{grid-template-columns:repeat(2,1fr);}
    .t4{grid-template-columns:repeat(2,1fr);}
    .flow{grid-template-columns:repeat(2,1fr);gap:38px 0;}
    .step:not(:last-child)::after{display:none;}
    .about-grid{grid-template-columns:1fr;gap:34px;}
    .f-top{grid-template-columns:1fr 1fr;}
  }
  @media(max-width:640px){
    .wrap{padding:0 20px;}
    .nav-links{display:none;}
    .hero{padding:68px 0 60px;}
    section{padding:62px 0;}
    .cats,.t4,.flow,.plaza,.steps5{grid-template-columns:1fr;}
    .t4{gap:1px;}
    .f-top{grid-template-columns:1fr;gap:30px;}
    .f-bottom{flex-direction:column;}
  }