/* ============================================================
   捌陆柒出海落地 · 官网样式系统
   品牌：东方商务（宣纸米 · 品牌红 · 墨金 · 印章）
   ============================================================ */

:root{
  --red:#A80810;
  --red-deep:#8B060D;
  --red-ink:#6E050A;
  --paper:#FBF8F5;
  --paper-2:#F4EFE8;
  --ink:#1A1A1A;
  --ink-2:#3A3A3A;
  --gray:#6B6B6B;
  --gray-2:#8E8E8E;
  --gold:#C8A24B;
  --gold-l:#DCC084;
  --line:#E6DED4;
  --line-2:#D8CDBF;
  --white:#fff;
  --max:1180px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",SimSun,serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%; scroll-behavior:smooth; overflow-x:hidden}
body{max-width:100vw}
body{
  margin:0; background:var(--paper); color:var(--ink);
  font-family:var(--sans); font-size:15.5px; line-height:1.85;
  -webkit-font-smoothing:antialiased; overflow-x:hidden;
}
img{max-width:100%; display:block}
a{color:inherit; text-decoration:none}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding-left:1.2em}
::selection{background:rgba(168,8,16,.14)}

.wrap{max-width:var(--max); margin:0 auto; padding:0 28px}
.serif{font-family:var(--serif)}
.center{text-align:center}

/* ---------- 顶部导航 ---------- */
.nav{
  position:sticky; top:0; z-index:80;
  background:rgba(251,248,245,.92);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .3s var(--ease), box-shadow .3s var(--ease), background .3s;
}
.nav.scrolled{border-bottom-color:var(--line); box-shadow:0 1px 24px rgba(26,26,26,.05)}
.nav-inner{
  max-width:var(--max); margin:0 auto; padding:0 28px;
  height:76px; display:flex; align-items:center; gap:30px;
}
.brand{display:flex; align-items:center; gap:11px; flex:0 0 auto; min-width:0}
.brand img{width:40px; height:auto}
.brand-txt{line-height:1.25; white-space:nowrap}
.brand-cn{font-family:var(--serif); font-size:16.5px; font-weight:700; letter-spacing:.06em; color:var(--ink)}
.brand-en{font-size:8.5px; letter-spacing:.1em; color:var(--gray-2); text-transform:uppercase; margin-top:3px; white-space:nowrap}

.menu{display:flex; align-items:center; gap:26px; margin-left:auto}
.menu > li{position:relative; list-style:none; flex:0 0 auto}
.menu a.nav-link{
  font-size:14px; color:var(--ink-2); letter-spacing:.03em; white-space:nowrap;
  padding:6px 0; display:inline-block; position:relative; transition:color .25s;
}
.menu a.nav-link::after{
  content:""; position:absolute; left:0; bottom:0; height:1.5px; width:0;
  background:var(--red); transition:width .3s var(--ease);
}
.menu a.nav-link:hover{color:var(--red)}
.menu a.nav-link:hover::after,.menu a.nav-link.on::after{width:100%}
.menu a.nav-link.on{color:var(--red); font-weight:500}

.has-drop > .nav-link::before{content:""; margin:0}
.drop{
  position:absolute; top:calc(100% + 14px); left:-20px; min-width:268px;
  background:var(--white); border:1px solid var(--line); border-radius:3px;
  padding:10px; opacity:0; visibility:hidden; transform:translateY(-6px);
  transition:all .26s var(--ease); box-shadow:0 18px 44px rgba(26,26,26,.09);
}
.has-drop:hover .drop{opacity:1; visibility:visible; transform:translateY(0)}
.drop a{display:block; padding:10px 12px; border-radius:2px; transition:background .2s}
.drop a:hover{background:var(--paper-2)}
.drop .d-t{font-size:13.5px; color:var(--ink); font-weight:500; display:block}
.drop .d-s{font-size:11.5px; color:var(--gray-2); display:block; margin-top:1px; letter-spacing:.02em}

.nav-right{display:flex; align-items:center; gap:14px; flex:0 0 auto}
.lang{display:flex; align-items:center; gap:5px; font-size:12px; letter-spacing:.06em; color:var(--gray)}
.lang a{padding:2px 3px; transition:color .2s}
.lang a.on{color:var(--red); font-weight:600; border-bottom:1px solid var(--red)}
.lang span{color:var(--line-2)}

.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:9px;
  font-size:14px; font-weight:500; letter-spacing:.04em; padding:13px 26px;
  border-radius:2px; border:1px solid transparent; cursor:pointer;
  transition:all .3s var(--ease); font-family:inherit;
}
.btn-primary{background:var(--red); color:#fff; border-color:var(--red)}
.btn-primary:hover{background:var(--red-deep); border-color:var(--red-deep); transform:translateY(-1px); box-shadow:0 10px 26px rgba(168,8,16,.22)}
.btn-ghost{background:transparent; color:var(--ink); border-color:var(--line-2)}
.btn-ghost:hover{border-color:var(--ink); background:rgba(26,26,26,.03)}
.btn-light{background:transparent; color:#fff; border-color:rgba(255,255,255,.42)}
.btn-light:hover{background:#fff; color:var(--red); border-color:#fff}
.btn-sm{padding:9px 18px; font-size:13px}
.btn .ar{transition:transform .3s var(--ease)}
.btn:hover .ar{transform:translateX(3px)}

.burger{display:none; width:42px; height:42px; border:1px solid var(--line-2); background:none; border-radius:2px; cursor:pointer; padding:0; position:relative}
.burger i{position:absolute; left:11px; width:20px; height:1.5px; background:var(--ink); transition:.3s var(--ease)}
.burger i:nth-child(1){top:15px}
.burger i:nth-child(2){top:20.5px}
.burger i:nth-child(3){top:26px}
.burger.open i:nth-child(1){transform:translateY(5.5px) rotate(45deg)}
.burger.open i:nth-child(2){opacity:0}
.burger.open i:nth-child(3){transform:translateY(-5.5px) rotate(-45deg)}

/* ---------- 语言提示条 ---------- */
.langbar{
  background:var(--ink); color:rgba(255,255,255,.82);
  font-size:12.5px; padding:9px 28px; display:flex; align-items:center;
  justify-content:center; gap:14px; letter-spacing:.02em;
}
.langbar b{color:var(--gold); font-weight:600}
.langbar a{color:#fff; border-bottom:1px solid rgba(255,255,255,.4); margin-left:2px}
.langbar button{background:none;border:none;color:rgba(255,255,255,.45);cursor:pointer;font-size:15px;padding:0 2px;line-height:1}

/* ---------- Hero ---------- */
.hero{
  position:relative; overflow:hidden; color:#fff;
  background:linear-gradient(135deg,#A80810 0%,#8B060D 62%,#730409 100%);
  padding:96px 0 0;
}
.hero::before{
  content:""; position:absolute; right:-14%; top:-38%; width:760px; height:760px;
  border:1px solid rgba(200,162,75,.26); border-radius:50%; pointer-events:none;
}
.hero::after{
  content:""; position:absolute; right:-4%; top:-16%; width:520px; height:520px;
  border:1px solid rgba(200,162,75,.14); border-radius:50%; pointer-events:none;
}
.hero-grain{
  position:absolute; inset:0; pointer-events:none; opacity:.055;
  background-image:repeating-linear-gradient(45deg,#fff 0 1px,transparent 1px 4px);
}
.hero-inner{position:relative; z-index:2; max-width:var(--max); margin:0 auto; padding:0 28px}
.hero-seal{
  position:absolute; right:28px; top:-6px; width:210px; opacity:.5; z-index:1; pointer-events:none;
}
.hero-kicker{
  font-size:11.5px; letter-spacing:.34em; color:var(--gold-l); text-transform:uppercase;
  margin-bottom:26px; display:flex; align-items:center; gap:14px;
}
.hero-kicker::after{content:""; width:52px; height:1px; background:rgba(200,162,75,.5)}
.hero h1{
  font-family:var(--serif); font-weight:700; letter-spacing:.02em;
  font-size:clamp(38px,5.2vw,66px); line-height:1.16; max-width:16em;
}
.hero h1 .gd{color:var(--gold-l)}
.hero-sub{
  margin-top:26px; font-size:clamp(15px,1.5vw,18px); color:rgba(255,255,255,.86);
  line-height:1.85; max-width:33em; font-weight:300;
}
.hero-sub strong{color:#fff; font-weight:500}
.hero-acts{display:flex; flex-wrap:wrap; gap:14px; margin-top:40px}
.hero-meta{
  margin-top:72px; border-top:1px solid rgba(255,255,255,.16);
  display:grid; grid-template-columns:repeat(3,1fr); gap:0;
}
.hero-meta div{padding:20px 24px 26px 0}
.hero-meta div + div{border-left:1px solid rgba(255,255,255,.12); padding-left:26px}
.hero-meta .c{font-size:10.5px; letter-spacing:.26em; color:var(--gold-l); text-transform:uppercase}
.hero-meta .n{font-family:var(--serif); font-size:22px; margin-top:7px; letter-spacing:.04em}
.hero-meta .s{font-size:12px; color:rgba(255,255,255,.5); margin-top:3px; letter-spacing:.04em}

/* ---------- 数据条 ---------- */
.trustbar{background:var(--ink); color:#fff; padding:0}
.trustbar .wrap{display:grid; grid-template-columns:repeat(4,1fr); gap:0}
.trustbar .i{padding:30px 22px; border-left:1px solid rgba(255,255,255,.1)}
.trustbar .i:first-child{border-left:none; padding-left:0}
.trustbar .v{font-family:var(--serif); font-size:30px; color:var(--gold); letter-spacing:.02em; line-height:1.1}
.trustbar .v small{font-size:14px; color:rgba(255,255,255,.6); margin-left:3px; font-family:var(--sans)}
.trustbar .k{font-size:12.5px; color:rgba(255,255,255,.62); margin-top:8px; line-height:1.6}

/* ---------- 章节 ---------- */
.sect{padding:96px 0}
.sect.tight{padding:64px 0}
.sect.paper2{background:var(--paper-2)}
.sect.ink{background:var(--ink); color:#fff}
.sect-head{max-width:760px; margin-bottom:52px}
.sect-head.wide{max-width:none}
.kicker{
  font-size:11px; letter-spacing:.3em; color:var(--red); text-transform:uppercase;
  display:flex; align-items:center; gap:12px; margin-bottom:18px;
}
.kicker::before{content:""; width:26px; height:1px; background:var(--red)}
.kicker.gold{color:var(--gold)}
.kicker.gold::before{background:var(--gold)}
.ink .kicker{color:var(--gold-l)}
.ink .kicker::before{background:var(--gold-l)}
h2.h2{
  font-family:var(--serif); font-weight:700; font-size:clamp(26px,3.2vw,40px);
  line-height:1.32; letter-spacing:.01em;
}
h2.h2 em{font-style:normal; color:var(--red)}
.ink h2.h2 em{color:var(--gold)}
.lead{margin-top:18px; font-size:15.5px; color:var(--ink-2); line-height:1.9; max-width:44em}
.ink .lead{color:rgba(255,255,255,.72)}
h3.h3{font-family:var(--serif); font-size:21px; font-weight:700; margin:34px 0 12px}
.h4{font-size:15px; font-weight:700; margin:0 0 8px}

/* ---------- 卡片 ---------- */
.g2{display:grid; grid-template-columns:1fr 1fr; gap:22px}
.g3{display:grid; grid-template-columns:repeat(3,1fr); gap:22px}
.g4{display:grid; grid-template-columns:repeat(4,1fr); gap:18px}
.asym{display:grid; grid-template-columns:.82fr 1.18fr; gap:64px; align-items:start}
.asym.b{grid-template-columns:1.18fr .82fr}
.asym h2.h2{font-size:clamp(22px,2.55vw,33px); line-height:1.4}
.asym .lead{margin-top:16px}

.card{
  background:#fff; border:1px solid var(--line); border-radius:3px;
  padding:30px 28px; transition:all .34s var(--ease); position:relative;
}
.card:hover{border-color:var(--line-2); box-shadow:0 16px 40px rgba(26,26,26,.07); transform:translateY(-2px)}
.card .num{
  font-family:var(--serif); font-size:13px; color:var(--gold); letter-spacing:.14em; margin-bottom:12px;
}
.card .t{font-family:var(--serif); font-size:19px; font-weight:700; margin-bottom:9px; letter-spacing:.02em}
.card .d{font-size:13.5px; color:var(--gray); line-height:1.8}
.card .tags{margin-top:16px; display:flex; flex-wrap:wrap; gap:6px}
.tag{font-size:11px; color:var(--gray); border:1px solid var(--line); padding:2px 8px; border-radius:20px; letter-spacing:.02em}

/* 痛点 / 反转 */
.pain{background:#fff; border:1px solid var(--line); padding:34px 32px}
.pain li{list-style:none; padding:14px 0 14px 34px; position:relative; border-bottom:1px dashed var(--line); font-size:14px; color:var(--ink-2)}
.pain li:last-child{border-bottom:none}
.pain li::before{content:"×"; position:absolute; left:4px; top:12px; color:#C06060; font-size:15px}
.pain.pos li::before{content:"✓"; color:var(--red); font-size:13px; top:13px}
.flip{background:var(--red); color:#fff; padding:34px 32px; position:relative; overflow:hidden}
.flip::after{content:"";position:absolute;right:-60px;bottom:-60px;width:180px;height:180px;border:1px solid rgba(200,162,75,.35);border-radius:50%}
.flip .h4{color:var(--gold-l); font-size:11px; letter-spacing:.28em; text-transform:uppercase; margin-bottom:18px}
.flip p{font-family:var(--serif); font-size:clamp(18px,2vw,24px); line-height:1.6; position:relative; z-index:1}
.flip p b{color:var(--gold-l); font-weight:700}

/* ---------- 对比表 ---------- */
.cmp{width:100%; border-collapse:collapse; background:#fff; font-size:14px; border:1px solid var(--line)}
.cmp th{
  background:var(--red); color:#fff; font-weight:500; font-size:12.5px;
  letter-spacing:.1em; padding:14px 18px; text-align:left;
}
.cmp th:first-child{width:22%; background:var(--red-deep)}
.cmp td{padding:15px 18px; border-bottom:1px solid var(--line); vertical-align:top; line-height:1.7}
.cmp tr:last-child td{border-bottom:none}
.cmp td:first-child{color:var(--gray); font-size:12.5px; letter-spacing:.06em; background:#FCFAF7}
.cmp td b{color:var(--red); font-weight:600}
.cmp .big{font-family:var(--serif); font-size:22px; color:var(--ink); display:block; line-height:1.2}
.cmp .sm{font-size:11.5px; color:var(--gray-2); display:block; margin-top:2px}

/* ---------- 流程 ---------- */
.steps{display:grid; grid-template-columns:repeat(5,1fr); gap:0; margin-top:8px}
.step{padding:18px 18px 0; border-left:1px solid var(--line); position:relative}
.step:first-child{border-left:none; padding-left:0}
.step::before{
  content:""; position:absolute; left:-3.5px; top:1px; width:7px; height:7px;
  border-radius:50%; background:var(--red);
}
.step:first-child::before{left:0}
.step .pn{font-size:10.5px; letter-spacing:.22em; color:var(--red); margin-bottom:9px}
.step .st{font-family:var(--serif); font-size:16.5px; font-weight:700; margin-bottom:8px; line-height:1.45}
.step .sd{font-size:12.5px; color:var(--gray); line-height:1.75}
.step .sp{font-size:11px; color:var(--gold); margin-top:10px; letter-spacing:.06em}

/* ---------- 案例 ---------- */
.case{
  display:grid; grid-template-columns:1.25fr 1fr; gap:0; background:#fff;
  border:1px solid var(--line); overflow:hidden;
}
.case-body{padding:38px 36px}
.case-side{
  background:var(--ink); color:#fff; padding:38px 34px;
  display:flex; flex-direction:column; justify-content:center; gap:26px;
}
.case-side .m{border-left:1px solid rgba(200,162,75,.4); padding-left:16px}
.case-side .mv{font-family:var(--serif); font-size:32px; color:var(--gold); line-height:1.1}
.case-side .mv small{font-size:13px; color:rgba(255,255,255,.6); font-family:var(--sans); margin-left:4px}
.case-side .ml{font-size:12px; color:rgba(255,255,255,.55); margin-top:5px; letter-spacing:.04em}
.quote{
  border-left:2px solid var(--gold); padding:4px 0 4px 20px; margin-top:24px;
  font-family:var(--serif); font-size:15.5px; color:var(--ink-2); line-height:1.85;
}
.quote cite{display:block; font-family:var(--sans); font-size:12px; color:var(--gray-2); font-style:normal; margin-top:10px}

/* ---------- 网络 ---------- */
.nodes{display:grid; grid-template-columns:repeat(3,1fr); gap:0; border:1px solid rgba(255,255,255,.16)}
.node{padding:32px 28px; border-left:1px solid rgba(255,255,255,.16)}
.node:first-child{border-left:none}
.node .nc{font-size:10.5px; letter-spacing:.28em; color:var(--gold-l)}
.node .nn{font-family:var(--serif); font-size:23px; margin:9px 0 12px}
.node .nd{font-size:12.5px; color:rgba(255,255,255,.6); line-height:1.8}
.node .nlist{margin-top:16px; font-size:12px; color:rgba(255,255,255,.5); line-height:1.9}

.partner{
  background:#fff; border:1px solid var(--line); padding:24px 22px; border-radius:3px;
  transition:all .3s var(--ease);
}
.partner:hover{border-color:var(--gold); box-shadow:0 12px 30px rgba(26,26,26,.06)}
.partner .pn{font-size:10.5px; letter-spacing:.18em; color:var(--gold); margin-bottom:8px}
.partner .pt{font-family:var(--serif); font-size:16px; font-weight:700; line-height:1.45; margin-bottom:7px}
.partner .pd{font-size:12.5px; color:var(--gray); line-height:1.75}

/* ---------- 创始人 ---------- */
.founder{display:grid; grid-template-columns:.42fr .58fr; gap:60px; align-items:center}
.founder-vis{
  aspect-ratio:1; background:linear-gradient(135deg,#A80810,#7E050C);
  display:flex; align-items:center; justify-content:center; position:relative; overflow:hidden;
}
.founder-vis img{width:52%; opacity:.92}
.founder-vis::after{content:""; position:absolute; inset:16px; border:1px solid rgba(200,162,75,.3)}
.founder-name{font-family:var(--serif); font-size:30px; font-weight:700; letter-spacing:.06em}
.founder-role{font-size:13px; color:var(--gray); margin-top:8px; letter-spacing:.06em}
.creds{display:flex; flex-wrap:wrap; gap:8px; margin-top:18px}
.cred{font-size:12px; border:1px solid var(--line-2); padding:5px 12px; color:var(--ink-2); letter-spacing:.02em}

/* ---------- 洞察 ---------- */
.post{display:block; background:#fff; border:1px solid var(--line); padding:28px 26px; transition:all .3s var(--ease)}
.post:hover{border-color:var(--gold); transform:translateY(-2px); box-shadow:0 14px 34px rgba(26,26,26,.07)}
.post .pc{font-size:11px; letter-spacing:.16em; color:var(--red); margin-bottom:12px}
.post .pt{font-family:var(--serif); font-size:17.5px; font-weight:700; line-height:1.55; margin-bottom:10px}
.post .pd{font-size:12.5px; color:var(--gray); line-height:1.75}
.post .pm{margin-top:16px; font-size:11.5px; color:var(--gray-2); display:flex; gap:12px}

/* ---------- CTA 区 ---------- */
.cta-band{
  background:linear-gradient(135deg,#A80810,#7E050C); color:#fff;
  padding:80px 0; position:relative; overflow:hidden;
}
.cta-band::after{
  content:""; position:absolute; right:-120px; bottom:-160px; width:440px; height:440px;
  border:1px solid rgba(200,162,75,.3); border-radius:50%;
}
.cta-band .wrap{position:relative; z-index:2}
.cta-band h2{font-family:var(--serif); font-size:clamp(26px,3.4vw,42px); line-height:1.3; font-weight:700}
.cta-band p{color:rgba(255,255,255,.78); margin-top:14px; max-width:38em}

/* ---------- 表单 ---------- */
.form{background:#fff; border:1px solid var(--line); padding:36px 34px}
.field{margin-bottom:18px}
.field label{display:block; font-size:12.5px; color:var(--ink-2); margin-bottom:7px; letter-spacing:.04em}
.field label i{color:var(--red); font-style:normal; margin-left:2px}
.field input,.field select,.field textarea{
  width:100%; padding:12px 14px; border:1px solid var(--line-2); background:#FDFCFA;
  font-family:inherit; font-size:14px; color:var(--ink); border-radius:2px;
  transition:border-color .25s, background .25s;
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none; border-color:var(--red); background:#fff;
}
.field textarea{min-height:96px; resize:vertical}
.field .hint{font-size:11.5px; color:var(--gray-2); margin-top:6px}
.consent{display:flex; gap:9px; align-items:flex-start; font-size:11.5px; color:var(--gray); line-height:1.7; margin-bottom:18px}
.consent input{margin-top:3px; flex:0 0 auto; accent-color:var(--red)}
.consent a{color:var(--red); border-bottom:1px solid rgba(168,8,16,.3)}
.form-ok{
  display:none; background:#F3F8F3; border:1px solid #CBE0CB; color:#2E6B36;
  padding:16px 18px; font-size:13.5px; margin-bottom:18px; border-radius:2px;
}
.form-ok.show{display:block}

/* ---------- 联系卡 ---------- */
.contact-row{display:flex; align-items:center; gap:14px; padding:16px 0; border-bottom:1px solid var(--line)}
.contact-row:last-child{border-bottom:none}
.contact-row .ci{width:34px; height:34px; flex:0 0 auto; border:1px solid var(--line-2); display:flex; align-items:center; justify-content:center; font-size:13px; color:var(--red)}
.contact-row .cl{font-size:11px; letter-spacing:.14em; color:var(--gray-2)}
.contact-row .cv{font-size:14.5px; color:var(--ink)}
.contact-row .cv small{font-size:11.5px; color:var(--gray-2); display:block; letter-spacing:.02em}

/* ---------- 页脚 ---------- */
.foot{background:var(--ink); color:rgba(255,255,255,.62); padding:70px 0 0; font-size:13px}
.foot-top{display:grid; grid-template-columns:1.5fr 1fr 1fr 1fr; gap:44px; padding-bottom:52px}
.foot .fbrand{display:flex; gap:13px; align-items:flex-start}
.foot .fbrand img{width:42px; opacity:.95}
.foot .fcn{font-family:var(--serif); color:#fff; font-size:16.5px; letter-spacing:.08em; line-height:1.5}
.foot .fen{font-size:10px; letter-spacing:.14em; color:rgba(255,255,255,.38); margin-top:4px; text-transform:uppercase; line-height:1.6}
.foot .fdesc{font-size:12.5px; color:rgba(255,255,255,.45); line-height:1.9; margin-top:18px; max-width:26em}
.foot h5{font-size:11px; letter-spacing:.24em; color:var(--gold); text-transform:uppercase; margin-bottom:16px; font-weight:600}
.foot ul{list-style:none; padding:0; margin:0}
.foot li{margin-bottom:9px}
.foot a{color:rgba(255,255,255,.62); font-size:12.5px; transition:color .2s}
.foot a:hover{color:var(--gold-l)}
.foot-bot{
  border-top:1px solid rgba(255,255,255,.1); padding:22px 0;
  display:flex; flex-wrap:wrap; gap:10px 24px; justify-content:space-between;
  font-size:11.5px; color:rgba(255,255,255,.35);
}
.foot-bot .socials{display:flex; gap:14px}
.foot-bot .socials a{font-size:11.5px}

/* ---------- 浮动 CTA ---------- */
.float{
  position:fixed; right:24px; bottom:28px; z-index:70;
  display:flex; flex-direction:column; gap:12px; align-items:flex-end;
}
.fab{
  width:52px; height:52px; border-radius:50%; background:var(--red); color:#fff;
  display:flex; align-items:center; justify-content:center; cursor:pointer;
  border:none; box-shadow:0 8px 24px rgba(168,8,16,.32); position:relative;
  transition:all .3s var(--ease);
}
.fab:hover{transform:translateY(-2px); box-shadow:0 12px 30px rgba(168,8,16,.42)}
.fab.wa{background:#1F6B4A; box-shadow:0 8px 24px rgba(31,107,74,.3)}
.fab svg{width:24px; height:24px; fill:#fff}
.fab .tip{
  position:absolute; right:64px; top:50%; transform:translateY(-50%) translateX(6px);
  background:var(--ink); color:#fff; font-size:12px; padding:6px 11px; border-radius:2px;
  white-space:nowrap; opacity:0; pointer-events:none; transition:.25s var(--ease);
}
.fab:hover .tip{opacity:1; transform:translateY(-50%) translateX(0)}

/* 移动端吸底 */
.mbar{display:none; position:fixed; left:0; right:0; bottom:0; z-index:75; background:#fff;
  border-top:1px solid var(--line); box-shadow:0 -4px 20px rgba(26,26,26,.06);
  padding-bottom:env(safe-area-inset-bottom);}
.mbar a,.mbar button{
  flex:1; display:flex; flex-direction:column; align-items:center; justify-content:center; gap:3px;
  height:58px; font-size:10.5px; color:var(--ink-2); background:none; border:none;
  font-family:inherit; border-right:1px solid var(--line); letter-spacing:.02em;
}
.mbar a:last-child,.mbar button:last-child{border-right:none}
.mbar .p{background:var(--red); color:#fff}
.mbar svg{width:19px; height:19px; fill:currentColor}

/* ---------- 二维码弹窗 ---------- */
.modal{
  position:fixed; inset:0; z-index:120; background:rgba(20,20,20,.62);
  display:flex; align-items:center; justify-content:center; padding:24px;
  opacity:0; visibility:hidden; transition:.3s var(--ease);
  backdrop-filter:blur(3px);
}
.modal.on{opacity:1; visibility:visible}
.modal-box{
  background:var(--paper); width:100%; max-width:380px; padding:34px 30px 30px;
  text-align:center; border-radius:3px; transform:scale(.96); transition:.3s var(--ease);
  position:relative;
}
.modal.on .modal-box{transform:scale(1)}
.modal-box img{width:220px; margin:16px auto 12px; border:1px solid var(--line); padding:8px; background:#fff}
.modal-box .mt{font-family:var(--serif); font-size:19px; font-weight:700}
.modal-box .ms{font-size:12.5px; color:var(--gray); margin-top:6px; line-height:1.8}
.modal-close{
  position:absolute; right:12px; top:10px; border:none; background:none;
  font-size:22px; color:var(--gray-2); cursor:pointer; line-height:1;
}

/* ---------- 通用块 ---------- */
.scroll-x{overflow-x:auto; -webkit-overflow-scrolling:touch}
.note{
  border-left:2px solid var(--gold); background:#FFFCF5; padding:16px 20px;
  font-size:13px; color:var(--ink-2); line-height:1.85;
}
.note b{color:var(--red)}
.divider{height:1px; background:var(--line); margin:56px 0}
.mt0{margin-top:0}.mt8{margin-top:8px}.mt16{margin-top:16px}.mt24{margin-top:24px}
.mt32{margin-top:32px}.mt40{margin-top:40px}.mt56{margin-top:56px}
.mb0{margin-bottom:0}.mb16{margin-bottom:16px}.mb32{margin-bottom:32px}
.txc{text-align:center}
.small{font-size:12.5px; color:var(--gray); line-height:1.85}
.red{color:var(--red)}
.gold{color:var(--gold)}
.nowrap{white-space:nowrap}

/* 页码/面包屑 */
.crumb{font-size:12px; color:var(--gray-2); padding:22px 0 0; letter-spacing:.04em}
.crumb a{color:var(--gray); transition:color .2s}
.crumb a:hover{color:var(--red)}
.crumb span{margin:0 8px; color:var(--line-2)}

/* 内页头 */
.phead{padding:26px 0 0}
.phead h1{
  font-family:var(--serif); font-size:clamp(30px,4vw,48px); line-height:1.28;
  font-weight:700; letter-spacing:.01em; margin:26px 0 0; max-width:20em;
}
.phead .psub{margin-top:18px; font-size:16px; color:var(--ink-2); max-width:40em; line-height:1.9}
.phead .pacts{display:flex; flex-wrap:wrap; gap:12px; margin-top:30px}

/* 服务页五段 */
.pain-g{display:grid; grid-template-columns:repeat(2,1fr); gap:0; border:1px solid var(--line); background:#fff}
.pain-g .pi{padding:26px 28px; border-right:1px solid var(--line); border-bottom:1px solid var(--line); display:flex; gap:14px}
.pain-g .pi:nth-child(2n){border-right:none}
.pain-g .pi:nth-last-child(-n+2){border-bottom:none}
.pain-g .pn{font-family:var(--serif); font-size:13px; color:var(--red); flex:0 0 auto; padding-top:2px}
.pain-g .t{font-size:14.5px; font-weight:700; margin-bottom:5px}
.pain-g .d{font-size:12.5px; color:var(--gray); line-height:1.75}

.deliver{background:#fff; border:1px solid var(--line)}
.deliver .row{display:grid; grid-template-columns:.44fr 1fr; border-bottom:1px solid var(--line)}
.deliver .row:last-child{border-bottom:none}
.deliver .k{padding:16px 20px; background:#FCFAF7; font-size:12.5px; color:var(--gray); border-right:1px solid var(--line); letter-spacing:.04em}
.deliver .v{padding:16px 20px; font-size:13.5px}

/* 渐进出现 */
.rv{opacity:0; transform:translateY(14px); transition:opacity .8s var(--ease), transform .8s var(--ease)}
.rv.in{opacity:1; transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .brand-en{display:none}
}
@media (max-width:1080px){
  .menu{gap:20px}
  .asym{gap:44px}
}
@media (max-width:940px){
  .nav-inner{height:66px; gap:16px}
  .menu{
    position:fixed; top:66px; left:0; right:0; width:auto; max-width:100vw; overflow-x:hidden;
    margin-left:0; background:var(--paper); flex-direction:column;
    align-items:stretch; gap:0; padding:8px 20px 24px; border-bottom:1px solid var(--line);
    max-height:calc(100vh - 66px); overflow-y:auto;
    transform:translateY(-8px); opacity:0; visibility:hidden; transition:.3s var(--ease);
    box-shadow:0 20px 40px rgba(26,26,26,.08);
  }
  .menu.on{transform:none; opacity:1; visibility:visible}
  .menu > li{border-bottom:1px solid var(--line)}
  .menu > li:last-child{border-bottom:none}
  .menu a.nav-link{padding:14px 4px; display:block; font-size:15px}
  .drop{position:static; opacity:1; visibility:visible; transform:none; box-shadow:none;
    border:none; border-radius:0; padding:0 0 8px 14px; background:none; min-width:0}
  .drop a{padding:9px 6px}
  .has-drop:hover .drop{transform:none}
  .burger{display:block; order:3}
  .nav-right .btn{display:none}
  .lang{margin-left:auto}
  .hero{padding-top:64px}
  .hero-seal{width:130px; right:16px; top:10px; opacity:.32}
  .hero-meta{grid-template-columns:1fr; margin-top:48px}
  .hero-meta div + div{border-left:none; border-top:1px solid rgba(255,255,255,.12); padding-left:0; padding-top:18px}
  .trustbar .wrap{grid-template-columns:1fr 1fr}
  .trustbar .i{padding:22px 18px; border-left:none; border-top:1px solid rgba(255,255,255,.1)}
  .trustbar .i:nth-child(odd){border-right:1px solid rgba(255,255,255,.1); padding-left:0}
  .trustbar .i:nth-child(-n+2){border-top:none}
  .sect{padding:64px 0}
  .g2,.g3,.g4,.asym,.asym.b,.founder,.case,.nodes,.pain-g{grid-template-columns:1fr}
  .founder{gap:28px}
  .founder-vis{max-width:280px}
  .steps{grid-template-columns:1fr}
  .step{border-left:none; border-top:1px solid var(--line); padding:20px 0 20px 18px}
  .step:first-child{border-top:none; padding-top:0}
  .step::before{left:0; top:26px}
  .step:first-child::before{top:6px}
  .case-side{flex-direction:row; flex-wrap:wrap; gap:20px}
  .case-side .m{flex:1 1 40%}
  .node{border-left:none; border-top:1px solid rgba(255,255,255,.16); padding:24px 0}
  .node:first-child{border-top:none}
  .foot-top{grid-template-columns:1fr 1fr; gap:32px}
  .float{display:none}
  .mbar{display:flex}
  body{padding-bottom:58px}
  .pain-g .pi{border-right:none}
  .pain-g .pi:nth-last-child(-n+2){border-bottom:1px solid var(--line)}
  .pain-g .pi:last-child{border-bottom:none}
  .deliver .row{grid-template-columns:1fr}
  .deliver .k{border-right:none; border-bottom:1px solid var(--line); padding-bottom:8px}
  .deliver .v{padding-top:10px}
}
@media (max-width:560px){
  .wrap,.nav-inner{padding-left:18px; padding-right:18px}
  .hero{padding-top:52px}
  .hero h1{font-size:32px}
  .hero-acts .btn{width:100%}
  .card{padding:24px 20px}
  .case-body{padding:26px 20px}
  .form{padding:24px 20px}
  .foot-top{grid-template-columns:1fr}
  .trustbar .v{font-size:24px}
  .brand-en{display:none}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important; transition:none!important}
  .rv{opacity:1; transform:none}
}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line); background:#fff; border:1px solid var(--line)}
.faq{border-bottom:1px solid var(--line)}
.faq:last-child{border-bottom:none}
.faq summary{
  padding:18px 48px 18px 22px; cursor:pointer; font-size:14.5px; font-weight:500;
  position:relative; list-style:none; transition:background .2s;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{background:var(--paper)}
.faq summary::after{
  content:"+"; position:absolute; right:22px; top:50%; transform:translateY(-50%);
  color:var(--red); font-size:19px; font-weight:400; line-height:1;
}
.faq[open] summary::after{content:"–"}
.faq[open] summary{background:var(--paper)}
.faq .fa{padding:0 22px 20px; font-size:13.5px; color:var(--ink-2); line-height:1.9}