/* ============================================================
   远航出海 · 官网共享样式
   设计语言：深色 hero + 浅色正文交替，单强调色，编辑排版
   ============================================================ */
:root{
  --bg-dark:#0b1220;
  --bg-dark-soft:#111c30;
  --bg-dark-line:rgba(255,255,255,.09);
  --paper:#f7f8fa;
  --card:#ffffff;
  --ink:#131c2b;
  --ink-strong:#0b1220;
  --muted:#5b6b7f;
  --muted-dark:rgba(255,255,255,.62);
  --accent:#1fae8e;
  --accent-deep:#157a64;
  --accent-soft:rgba(31,174,142,.12);
  --amber:#d99a2b;
  --border:#e3e8ef;
  --radius:10px;
  --max:1080px;
  font-size:16px;
}
*{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","Noto Sans CJK SC",sans-serif;
  color:var(--ink);
  background:var(--paper);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
.wrap{max-width:var(--max);margin:0 auto;padding:0 28px;}

/* ---------- 导航 ---------- */
.nav{
  position:sticky;top:0;z-index:50;
  background:rgba(11,18,32,.86);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--bg-dark-line);
}
.nav-inner{display:flex;align-items:center;gap:36px;height:64px;}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:600;font-size:17px;letter-spacing:.5px;}
.brand .mark{
  width:26px;height:26px;border-radius:6px;
  background:linear-gradient(135deg,var(--accent),#3ecfa9);
  display:inline-flex;align-items:center;justify-content:center;
  color:#06251c;font-size:13px;font-weight:700;
}
.nav-links{display:flex;gap:28px;margin-left:auto;}
.nav-links a{
  color:rgba(255,255,255,.72);font-size:14.5px;transition:color .2s;
}
.nav-links a:hover,.nav-links a.active{color:#fff;}
.nav-cta{
  margin-left:8px;background:var(--accent);color:#04241b!important;
  padding:8px 18px;border-radius:7px;font-size:14px;font-weight:600;
  transition:background .2s;
}
.nav-cta:hover{background:#28c49f;}
.menu-btn{display:none;margin-left:auto;background:none;border:1px solid var(--bg-dark-line);
  color:#fff;border-radius:7px;padding:6px 12px;font-size:14px;cursor:pointer;}

/* ---------- 通用区块 ---------- */
.section{padding:88px 0;}
.section.tight{padding:64px 0;}
.kicker{
  display:inline-block;font-size:13px;letter-spacing:2.5px;
  color:var(--accent-deep);font-weight:600;margin-bottom:18px;
}
.dark .kicker{color:#4fd8b8;}
h2.title{font-size:34px;font-weight:600;line-height:1.3;color:var(--ink-strong);letter-spacing:-.3px;}
.dark h2.title{color:#fff;}
.lead{margin-top:16px;font-size:17px;color:var(--muted);max-width:640px;}
.dark .lead{color:var(--muted-dark);}
.section-head{margin-bottom:52px;}

/* ---------- Hero ---------- */
.hero{
  background:
    radial-gradient(900px 420px at 78% -10%,rgba(31,174,142,.16),transparent 60%),
    radial-gradient(700px 380px at 12% 110%,rgba(31,174,142,.08),transparent 60%),
    var(--bg-dark);
  color:#fff;padding:120px 0 104px;
}
.hero .tag{
  display:inline-block;border:1px solid rgba(79,216,184,.35);color:#4fd8b8;
  font-size:13px;padding:5px 14px;border-radius:999px;margin-bottom:26px;letter-spacing:1px;
}
.hero h1{
  font-size:52px;font-weight:600;line-height:1.22;letter-spacing:-1px;max-width:760px;
}
.hero h1 em{font-style:normal;color:#4fd8b8;}
.hero p.sub{
  margin-top:24px;font-size:18px;line-height:1.8;color:var(--muted-dark);max-width:620px;
}
.hero-actions{display:flex;gap:16px;margin-top:40px;flex-wrap:wrap;}
.btn{
  display:inline-block;padding:13px 28px;border-radius:8px;font-size:15.5px;font-weight:600;
  transition:transform .15s,background .2s,border-color .2s;
}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--accent);color:#04241b;}
.btn-primary:hover{background:#28c49f;}
.btn-ghost{border:1px solid rgba(255,255,255,.28);color:#fff;}
.btn-ghost:hover{border-color:rgba(255,255,255,.55);}
.btn-dark{background:var(--ink-strong);color:#fff;}
.btn-dark:hover{background:#1d2b42;}
.hero-note{margin-top:26px;font-size:13.5px;color:rgba(255,255,255,.42);}
.hero-stats{display:flex;gap:0;margin-top:64px;border-top:1px solid var(--bg-dark-line);padding-top:32px;flex-wrap:wrap;}
.hero-stats .stat{padding-right:56px;}
.hero-stats .num{font-size:26px;font-weight:600;color:#fff;font-variant-numeric:tabular-nums;}
.hero-stats .num small{font-size:14px;font-weight:400;color:var(--muted-dark);margin-left:4px;}
.hero-stats .lab{font-size:13px;color:rgba(255,255,255,.45);margin-top:4px;}

/* ---------- 痛点 ---------- */
.pains{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.pain{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:26px 28px;display:flex;gap:16px;align-items:flex-start;
}
.pain .no{
  font-size:13px;font-weight:700;color:var(--amber);padding-top:3px;
  font-variant-numeric:tabular-nums;white-space:nowrap;
}
.pain p{font-size:15.5px;color:var(--ink);line-height:1.7;}
.pain p strong{color:var(--ink-strong);}

/* ---------- 服务卡片 ---------- */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.svc{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:30px 28px;transition:border-color .2s,box-shadow .2s;
}
.svc:hover{border-color:#c8d2dd;box-shadow:0 14px 32px -18px rgba(19,28,43,.18);}
.svc .idx{font-size:12.5px;letter-spacing:2px;color:var(--accent-deep);font-weight:700;margin-bottom:14px;}
.svc h3{font-size:19px;font-weight:600;color:var(--ink-strong);margin-bottom:10px;}
.svc p{font-size:14.5px;color:var(--muted);line-height:1.7;}
.svc.wide{grid-column:span 3;display:flex;gap:40px;align-items:center;background:var(--bg-dark);border-color:var(--bg-dark);}
.svc.wide h3{color:#fff;}
.svc.wide p{color:var(--muted-dark);}
.svc.wide .svc-body{flex:1;}

/* ---------- 闭环 ---------- */
.loop{background:var(--bg-dark);color:#fff;}
.loop-steps{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;counter-reset:step;}
.loop-step{
  border:1px solid var(--bg-dark-line);border-radius:var(--radius);padding:24px 20px;
  background:rgba(255,255,255,.025);position:relative;
}
.loop-step .no{
  width:28px;height:28px;border-radius:50%;background:var(--accent);color:#04241b;
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;margin-bottom:16px;
}
.loop-step h4{font-size:16px;font-weight:600;margin-bottom:8px;}
.loop-step p{font-size:13px;color:var(--muted-dark);line-height:1.65;}
.loop-back{
  margin-top:22px;border:1px dashed rgba(79,216,184,.4);border-radius:var(--radius);
  padding:16px 24px;font-size:14px;color:#4fd8b8;text-align:center;letter-spacing:.5px;
}

/* ---------- 订阅 ---------- */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:stretch;}
.plan{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:34px 30px;display:flex;flex-direction:column;
}
.plan.hot{border-color:var(--accent);box-shadow:0 18px 44px -22px rgba(31,174,142,.35);position:relative;}
.plan.hot .hot-tag{
  position:absolute;top:-13px;left:30px;background:var(--accent);color:#04241b;
  font-size:12px;font-weight:700;padding:4px 14px;border-radius:999px;
}
.plan h3{font-size:20px;font-weight:600;color:var(--ink-strong);}
.plan .for{font-size:13.5px;color:var(--muted);margin:8px 0 20px;}
.plan ul{list-style:none;margin:0 0 26px;flex:1;}
.plan ul li{
  font-size:14.5px;color:var(--ink);padding:9px 0;border-bottom:1px solid #f0f3f6;
  display:flex;gap:10px;align-items:flex-start;line-height:1.6;
}
.plan ul li::before{content:"—";color:var(--accent);font-weight:700;}
.plan .price{font-size:15px;color:var(--ink-strong);font-weight:600;margin-bottom:20px;}
.plan .price small{display:block;font-weight:400;color:var(--muted);font-size:12.5px;margin-top:4px;}
.subscribe-points{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:48px;}
.spoint{
  border-left:2px solid var(--border);padding:4px 0 4px 20px;
}
.spoint h4{font-size:16px;font-weight:600;color:var(--ink-strong);margin-bottom:6px;}
.spoint p{font-size:13.5px;color:var(--muted);line-height:1.65;}

/* ---------- 案例 ---------- */
.case{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:36px 38px;margin-bottom:22px;
}
.case .meta{font-size:12.5px;letter-spacing:1.5px;color:var(--accent-deep);font-weight:700;margin-bottom:12px;}
.case h3{font-size:21px;font-weight:600;color:var(--ink-strong);margin-bottom:14px;}
.case p{font-size:15px;color:var(--ink);max-width:820px;}
.case .result{
  margin-top:18px;padding:14px 20px;background:var(--accent-soft);border-radius:8px;
  font-size:14.5px;color:var(--accent-deep);font-weight:500;
}

/* ---------- FAQ ---------- */
.faq-item{border-bottom:1px solid var(--border);padding:24px 0;}
.faq-item h4{font-size:16.5px;font-weight:600;color:var(--ink-strong);margin-bottom:10px;}
.faq-item p{font-size:14.5px;color:var(--muted);max-width:780px;}

/* ---------- CTA 深色带 ---------- */
.cta-band{
  background:
    radial-gradient(700px 300px at 85% 20%,rgba(31,174,142,.18),transparent 60%),
    var(--bg-dark);
  color:#fff;text-align:left;
}
.cta-band h2{font-size:32px;font-weight:600;letter-spacing:-.3px;}
.cta-band p{margin-top:14px;color:var(--muted-dark);font-size:16px;max-width:560px;}
.cta-band .hero-actions{margin-top:32px;}

/* ---------- 页脚 ---------- */
footer{background:#080e1a;color:rgba(255,255,255,.5);padding:56px 0 40px;font-size:13.5px;}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:36px;margin-bottom:40px;}
.foot-grid h5{color:#fff;font-size:14px;font-weight:600;margin-bottom:14px;}
.foot-grid a{display:block;padding:4px 0;color:rgba(255,255,255,.5);transition:color .2s;}
.foot-grid a:hover{color:#fff;}
.foot-base{border-top:1px solid rgba(255,255,255,.08);padding-top:24px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;}

/* ---------- 联系表单 ---------- */
.contact-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:start;}
.form-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:36px;}
.field{margin-bottom:20px;}
.field label{display:block;font-size:13.5px;font-weight:600;color:var(--ink-strong);margin-bottom:8px;}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border:1px solid var(--border);border-radius:8px;
  font-size:14.5px;font-family:inherit;color:var(--ink);background:#fbfcfd;transition:border-color .2s;
}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--accent);}
.field textarea{min-height:110px;resize:vertical;}
.contact-ways .way{padding:20px 0;border-bottom:1px solid var(--border);}
.contact-ways .way:last-child{border-bottom:none;}
.contact-ways .way h4{font-size:15px;font-weight:600;color:var(--ink-strong);margin-bottom:6px;}
.contact-ways .way p{font-size:14px;color:var(--muted);}
.placeholder-blank{
  display:inline-block;min-width:140px;border-bottom:1px solid #b9c4d0;
}

/* ---------- 服务详情页 ---------- */
.svc-detail{border-top:1px solid var(--border);padding:72px 0;}
.svc-detail:first-of-type{border-top:none;}
.svc-detail .head{display:flex;align-items:baseline;gap:18px;margin-bottom:18px;flex-wrap:wrap;}
.svc-detail .head .idx{font-size:13px;letter-spacing:2px;color:var(--accent-deep);font-weight:700;}
.svc-detail h2{font-size:28px;font-weight:600;color:var(--ink-strong);letter-spacing:-.3px;}
.svc-detail .desc{font-size:16px;color:var(--ink);max-width:760px;}
.svc-detail ul.pts{margin:22px 0 0;padding:0;list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:12px 32px;max-width:860px;}
.svc-detail ul.pts li{font-size:14.5px;color:var(--ink);padding-left:20px;position:relative;line-height:1.65;}
.svc-detail ul.pts li::before{content:"";position:absolute;left:0;top:10px;width:8px;height:8px;border-radius:2px;background:var(--accent);}
.kb-band{
  background:var(--bg-dark);color:#fff;border-radius:14px;padding:52px 54px;margin-top:72px;
}
.kb-band h3{font-size:24px;font-weight:600;}
.kb-band p{color:var(--muted-dark);font-size:15px;max-width:720px;margin-top:12px;}
.kb-band .kb-list{display:grid;grid-template-columns:1fr 1fr;gap:12px 40px;margin-top:28px;}
.kb-band .kb-list div{font-size:14.5px;padding-left:20px;position:relative;color:rgba(255,255,255,.85);}
.kb-band .kb-list div::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:2px;background:#4fd8b8;}

/* ---------- 页头（子页面通用） ---------- */
.page-head{background:var(--bg-dark);color:#fff;padding:84px 0 64px;}
.page-head h1{font-size:42px;font-weight:600;letter-spacing:-.8px;line-height:1.25;}
.page-head p{margin-top:18px;font-size:16.5px;color:var(--muted-dark);max-width:620px;}
.crumb{font-size:13px;color:rgba(255,255,255,.4);margin-bottom:22px;letter-spacing:1px;}
.crumb a{color:rgba(255,255,255,.6);}

/* ---------- 响应式 ---------- */
@media (max-width:960px){
  .svc-grid,.plans{grid-template-columns:1fr 1fr;}
  .loop-steps{grid-template-columns:1fr 1fr;}
  .subscribe-points{grid-template-columns:1fr 1fr;}
  .foot-grid{grid-template-columns:1fr 1fr;}
  .contact-grid{grid-template-columns:1fr;}
  .hero h1{font-size:38px;}
  .svc.wide{grid-column:span 2;flex-direction:column;align-items:flex-start;gap:14px;}
}
@media (max-width:640px){
  .nav-links{
    display:none;position:absolute;top:64px;left:0;right:0;
    background:var(--bg-dark);flex-direction:column;gap:0;padding:12px 28px 20px;
    border-bottom:1px solid var(--bg-dark-line);
  }
  .nav-links.open{display:flex;}
  .nav-links a{padding:12px 0;}
  .menu-btn{display:block;}
  .section{padding:60px 0;}
  .hero{padding:80px 0 72px;}
  .hero h1{font-size:31px;}
  .pains,.svc-grid,.plans,.loop-steps,.subscribe-points,.svc-detail ul.pts,.kb-band .kb-list{grid-template-columns:1fr;}
  .svc.wide{grid-column:span 1;}
  .hero-stats .stat{padding-right:28px;margin-bottom:18px;}
  .page-head h1{font-size:30px;}
  .foot-grid{grid-template-columns:1fr;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important;}
}