:root{
  --bg:#f7f1e8;
  --bg-soft:#fffaf2;
  --ink:#18130f;
  --muted:#665e55;
  --line:rgba(24,19,15,.12);
  --dark:#1d1712;
  --dark-2:#203a35;
  --copper:#9f623f;
  --jade:#255f55;
  --blue:#273f53;
  --sand:#dfc9a4;
  --site:1140px;
  --side:48px;
  --radius:22px;
  --shadow:0 18px 52px rgba(35,25,18,.12);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Inter,Arial,"PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.68;
  letter-spacing:.01em;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{
  width:min(var(--site),calc(100% - var(--side)));
  max-width:var(--site);
  margin:0 auto;
}

.site-bg{
  position:fixed;
  inset:0;
  z-index:-2;
  background:
    radial-gradient(circle at 8% 10%,rgba(159,98,63,.13),transparent 27%),
    radial-gradient(circle at 90% 12%,rgba(37,95,85,.12),transparent 30%),
    radial-gradient(circle at 76% 88%,rgba(39,63,83,.1),transparent 34%),
    linear-gradient(135deg,#faf4ec 0%,#efe2cf 52%,#faf7f1 100%);
}
.site-bg:after{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(24,19,15,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(24,19,15,.035) 1px,transparent 1px);
  background-size:84px 84px;
  opacity:.55;
}

/* Header */
.topbar{
  position:sticky;
  top:0;
  z-index:50;
  background:rgba(250,244,236,.9);
  backdrop-filter:blur(18px);
  border-bottom:1px solid rgba(24,19,15,.08);
}
.nav{
  height:72px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:22px;
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  font-weight:950;
  min-width:0;
}
.mark{
  width:44px;
  height:44px;
  border-radius:16px;
  flex:0 0 auto;
  background:conic-gradient(from 220deg,var(--dark),var(--copper),var(--jade),var(--blue),var(--dark));
  position:relative;
  box-shadow:0 14px 34px rgba(159,98,63,.18);
}
.mark:after{
  content:"AEO";
  position:absolute;
  inset:6px;
  border-radius:12px;
  background:var(--bg);
  display:grid;
  place-items:center;
  font-size:11px;
  letter-spacing:1px;
  color:var(--dark);
  font-weight:950;
}
.brand-title{display:block;font-size:19px;line-height:1.08}
.brand-sub{display:block;margin-top:2px;color:var(--muted);font-size:11px;letter-spacing:.7px;text-transform:uppercase}
.links{
  display:flex;
  align-items:center;
  gap:3px;
}
.links a{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:9px 14px;
  border-radius:999px;
  color:#38312b;
  font-size:14px;
  font-weight:850;
  line-height:1;
}
.links a:hover,.links a.active{background:var(--dark);color:#fff}
.menu-btn{
  display:none;
  width:42px;
  height:42px;
  padding:0;
  border:1px solid var(--line);
  background:rgba(255,255,255,.5);
  border-radius:50%;
  position:relative;
  cursor:pointer;
}
.menu-btn span,.menu-btn:before,.menu-btn:after{
  content:"";
  position:absolute;
  left:50%;
  width:18px;
  height:2px;
  border-radius:99px;
  background:var(--ink);
  transform:translateX(-50%);
}
.menu-btn:before{top:14px}
.menu-btn span{top:20px}
.menu-btn:after{top:26px}
.menu-btn.open span{opacity:0}
.menu-btn.open:before{top:20px;transform:translateX(-50%) rotate(45deg)}
.menu-btn.open:after{top:20px;transform:translateX(-50%) rotate(-45deg)}

/* Typography */
h1,h2,h3,p,ul,ol{overflow-wrap:break-word}
h1,h2,h3{font-weight:950}
h1{
  margin:14px 0 14px;
  max-width:780px;
  font-size:clamp(42px,5.4vw,74px);
  line-height:1.05;
  letter-spacing:-2.2px;
}
.section h2,.page-hero h1{
  text-wrap:balance;
}
.section h2{
  margin:0;
  font-size:clamp(30px,3.5vw,48px);
  line-height:1.15;
  letter-spacing:-1.1px;
}
h3{margin:0;font-size:21px;line-height:1.3}
p{margin:0}
.lead{
  max-width:760px;
  color:#5f574f;
  font-size:17px;
  line-height:1.76;
}
.muted{color:var(--muted)}
.gradient-text{
  background:linear-gradient(110deg,var(--dark) 5%,var(--copper) 42%,var(--jade) 74%,var(--blue));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:7px 12px;
  border:1px solid rgba(159,98,63,.2);
  background:rgba(159,98,63,.07);
  border-radius:999px;
  color:#724126;
  font-size:12px;
  font-weight:950;
  letter-spacing:.2px;
}
.eyebrow:before{
  content:"";
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--jade);
  box-shadow:0 0 0 6px rgba(37,95,85,.1);
}

/* Buttons */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:46px;
  padding:12px 21px;
  border:0;
  border-radius:999px;
  background:var(--dark);
  color:#fff;
  font-weight:950;
  cursor:pointer;
  line-height:1;
  box-shadow:0 14px 34px rgba(24,19,15,.14);
}
.btn:hover{transform:translateY(-1px)}
.btn.line{
  background:rgba(255,255,255,.42);
  color:var(--ink);
  border:1px solid var(--line);
  box-shadow:none;
}
.btn.copper{background:var(--copper)}
.btn.dark{background:var(--dark);color:#fff}

/* Main layout */
.hero{padding:64px 0 58px}
.page-hero{padding:56px 0 26px}
.section{padding:54px 0}
.section + .section{padding-top:48px}
.hero + .section{padding-top:48px}
.page-hero + .section{padding-top:38px}

.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1.04fr) minmax(400px,.96fr);
  gap:42px;
  align-items:center;
}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.pill-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;max-width:720px}
.pill{
  padding:8px 12px;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(255,255,255,.48);
  color:#50483f;
  font-weight:850;
  font-size:13px;
  line-height:1.35;
}

.section-head{
  width:100%;
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(280px,420px);
  align-items:end;
  gap:28px;
  margin-bottom:24px;
}
.section-head p{color:var(--muted);line-height:1.72}

/* Hero panel */
.answer-panel{
  width:100%;
  min-height:430px;
  padding:24px;
  border-radius:34px;
  color:#fff;
  background:linear-gradient(145deg,#241913 0%,#17130f 50%,#1f3934 100%);
  box-shadow:var(--shadow);
  overflow:hidden;
  position:relative;
}
.answer-panel:before{
  content:"";
  position:absolute;
  right:-120px;
  top:-120px;
  width:360px;
  height:360px;
  border-radius:44%;
  background:radial-gradient(circle,rgba(223,201,164,.8),transparent 64%);
  opacity:.3;
}
.answer-panel:after{
  content:"";
  position:absolute;
  left:-80px;
  bottom:-120px;
  width:320px;
  height:320px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(37,95,85,.8),transparent 66%);
  opacity:.26;
}
.panel-content{
  position:relative;
  z-index:2;
  min-height:382px;
  display:grid;
  grid-template-rows:auto 1fr;
  gap:18px;
}
.mini-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.mini{
  min-height:98px;
  padding:15px;
  border:1px solid rgba(255,255,255,.14);
  border-radius:20px;
  background:rgba(255,255,255,.07);
  display:flex;
  flex-direction:column;
  justify-content:space-between;
}
.mini b{display:block;color:#f4dcc0;font-size:25px;line-height:1}
.mini span{color:#d7ccbf;font-size:13px;line-height:1.45}
.answer-card{
  align-self:end;
  padding:21px;
  border-radius:24px;
  background:rgba(255,250,242,.94);
  color:#1f1813;
  line-height:1.68;
}
.answer-card strong{
  display:inline-flex;
  margin-right:2px;
  padding:2px 8px;
  border-radius:999px;
  background:var(--dark);
  color:#f4dcc0;
}

/* Cards and grids */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;align-items:stretch}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;align-items:stretch}
.card{
  margin:0;
  padding:21px 22px;
  border:1px solid var(--line);
  border-radius:22px;
  background:rgba(255,255,255,.5);
  box-shadow:0 12px 34px rgba(35,25,18,.07);
  display:flex;
  flex-direction:column;
  align-items:flex-start;
}
.card > * + *{margin-top:8px}
.card p{color:var(--muted);line-height:1.68}
.card.dark{
  background:linear-gradient(145deg,#211913,#172a27);
  border-color:rgba(255,255,255,.12);
  color:#fff;
}
.card.dark p,.card.dark .muted{color:#d7ccbf}
.card.light{background:#fffaf2}
.tag{
  display:inline-flex;
  width:max-content;
  margin:0 0 6px;
  padding:7px 11px;
  border-radius:999px;
  background:rgba(37,95,85,.1);
  color:#1e675c;
  font-size:12px;
  font-weight:950;
  line-height:1;
}
.card.dark .tag{background:rgba(244,220,192,.12);color:#f4dcc0}
.number{
  margin:0 0 6px;
  color:var(--copper);
  font-size:33px;
  font-weight:950;
  line-height:1;
}
.list{
  display:grid;
  gap:7px;
  margin:10px 0 0;
  padding:0;
  list-style:none;
}
.list li{
  position:relative;
  padding-left:22px;
  color:inherit;
  line-height:1.64;
}
.list li:before{
  content:"";
  position:absolute;
  left:0;
  top:.65em;
  width:9px;
  height:9px;
  border-radius:50%;
  background:linear-gradient(135deg,var(--copper),var(--jade));
}

.service-principles .card{min-height:0}
.service-principles .card:nth-child(2),
.service-principles .card:nth-child(3){transform:none}

/* Feature / CTA / FAQ */
.split-feature{display:grid;grid-template-columns:.96fr 1.04fr;gap:18px}
.feature-panel{
  padding:28px;
  border-radius:30px;
  color:#fff;
  background:linear-gradient(140deg,#201713,#203d38);
  box-shadow:var(--shadow);
}
.feature-panel p{margin-top:8px;color:#dfd4c6;line-height:1.72}
.band{
  width:100%;
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  gap:28px;
  align-items:center;
  padding:36px 40px;
  border-radius:32px;
  color:#fff;
  background:linear-gradient(112deg,#1f1712 0%,#213c37 64%,#965a39 100%);
  box-shadow:var(--shadow);
}
.band p{margin-top:8px;color:#eadfce;line-height:1.68}
.band .btn{background:#fffaf2;color:var(--dark)}

.faq{
  width:100%;
  display:grid;
  gap:12px;
}
.faq details{
  padding:16px 18px;
  border:1px solid var(--line);
  border-radius:20px;
  background:rgba(255,255,255,.55);
}
.faq summary{
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  font-size:18px;
  font-weight:950;
  line-height:1.45;
}
.faq summary:after{
  content:"+";
  width:28px;
  height:28px;
  border-radius:50%;
  display:grid;
  place-items:center;
  background:rgba(159,98,63,.1);
  color:var(--copper);
  flex:0 0 auto;
}
.faq details[open] summary:after{content:"–"}
.faq p{margin-top:9px;color:var(--muted);line-height:1.72}

/* Contact */
.contact-layout{
  display:grid;
  grid-template-columns:380px minmax(0,1fr);
  gap:20px;
  align-items:start;
}
.contact-card,.form-card{
  margin:0;
  padding:26px;
  border-radius:30px;
  box-shadow:var(--shadow);
}
.contact-card{
  position:relative;
  overflow:hidden;
  color:#fff;
  background:linear-gradient(145deg,#201713,#203d38);
}
.contact-card:after{
  content:"";
  position:absolute;
  right:-90px;
  top:-90px;
  width:260px;
  height:260px;
  border-radius:50%;
  background:rgba(159,98,63,.26);
}
.contact-card > *{position:relative;z-index:2}
.contact-card h2,.form-card h2{margin:0 0 10px;font-size:26px;line-height:1.25}
.contact-card .muted{color:#d8ccbd;line-height:1.68}
.info-list{display:grid;gap:0;margin-top:16px}
.info-item{
  display:grid;
  grid-template-columns:66px minmax(0,1fr);
  gap:12px;
  padding:10px 0;
  border-bottom:1px solid rgba(255,255,255,.13);
  line-height:1.45;
}
.info-item b{color:#f4dcc0}
.info-item a,.info-item span{word-break:break-all}
.qr-box{
  margin-top:16px;
  display:grid;
  grid-template-columns:108px minmax(0,1fr);
  gap:14px;
  align-items:center;
  padding:14px;
  border-radius:22px;
  background:#fff;
  box-shadow:0 18px 46px rgba(20,16,13,.18);
}
.qr-box img{
  width:108px;
  border:7px solid #fff;
  border-radius:16px;
  background:#fff;
}
.qr-box .muted{margin:0;color:#50483f!important;font-size:14px;line-height:1.58}

.form-card{
  border:1px solid var(--line);
  background:rgba(255,250,242,.75);
}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.field{display:grid;gap:7px}
.field.full{grid-column:1/-1}
.field label{font-size:13px;font-weight:850;line-height:1.35;color:#2c251f}
.field input,.field select,.field textarea{
  width:100%;
  min-height:48px;
  padding:12px 13px;
  border:1px solid rgba(24,19,15,.16);
  border-radius:14px;
  background:#fffaf2;
  color:var(--ink);
  font:inherit;
  outline:none;
}
.field textarea{min-height:124px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--copper);
  box-shadow:0 0 0 4px rgba(159,98,63,.1);
  background:#fff;
}
.form-note{margin:12px 0 16px;color:var(--muted);font-size:14px;line-height:1.58}
.env-status{display:none!important}

/* Footer */
.footer{
  padding:18px 0;
  border-top:1px solid var(--line);
  background:rgba(255,255,255,.16);
  color:#746b60;
  font-size:14px;
  line-height:1;
  letter-spacing:.02em;
}
.footer .container{
  min-height:22px;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:5px;
}
.footer a{display:inline-flex;align-items:center;font-weight:950;color:var(--ink);line-height:1}
.footer a:hover{color:var(--copper)}

/* Responsive */
@media(max-width:980px){
  :root{--side:34px}
  .hero{padding:48px 0 44px}
  .page-hero{padding:44px 0 18px}
  .section{padding:44px 0}
  .section + .section{padding-top:38px}
  .hero + .section{padding-top:38px}
  .page-hero + .section{padding-top:30px}
  .hero-grid{grid-template-columns:1fr;gap:28px}
  .answer-panel{max-width:740px;min-height:auto}
  .panel-content{min-height:auto}
  .section-head{grid-template-columns:1fr;gap:8px;margin-bottom:18px}
  .contact-layout{grid-template-columns:1fr}
}

@media(max-width:900px){
  :root{--side:28px}
  .nav{height:64px}
  .links{
    display:none;
    position:absolute;
    left:14px;
    right:14px;
    top:72px;
    padding:10px;
    border:1px solid var(--line);
    border-radius:20px;
    background:#fffaf2;
    box-shadow:var(--shadow);
    flex-direction:column;
    align-items:stretch;
  }
  .links.open{display:flex}
  .links a{justify-content:flex-start;padding:12px 14px}
  .menu-btn{display:block}
  .hero{padding:40px 0 38px}
  .page-hero{padding:38px 0 14px}
  .section{padding:38px 0}
  .section + .section{padding-top:32px}
  .hero + .section{padding-top:32px}
  .page-hero + .section{padding-top:26px}
  .grid-3,.grid-2,.split-feature,.band{grid-template-columns:1fr}
  .grid-3,.grid-2,.service-principles,.split-feature,.contact-layout{gap:12px}
  .card,.card.dark,.card.light{padding:18px;border-radius:20px}
  .answer-panel{padding:20px}
  .mini{min-height:auto}
  .form-grid{grid-template-columns:1fr}
}

@media(max-width:640px){
  :root{--side:24px}
  body{letter-spacing:0}
  .brand-sub{display:none}
  .brand-title{font-size:17px}
  .mark{width:38px;height:38px}
  .hero{padding:34px 0 32px}
  .page-hero{padding:34px 0 12px}
  .section{padding:34px 0}
  .section + .section{padding-top:28px}
  h1{font-size:clamp(36px,10vw,54px);letter-spacing:-1.4px}
  .lead{font-size:15.5px;line-height:1.68}
  .section h2{font-size:28px}
  .hero-actions{display:grid;grid-template-columns:1fr;gap:10px;margin-top:18px}
  .btn{width:100%}
  .pill-row{gap:7px;margin-top:14px}
  .pill{font-size:12px;padding:7px 10px}
  .mini-grid{grid-template-columns:1fr;gap:10px}
  .answer-card{padding:18px}
  .card,.card.dark,.card.light,.contact-card,.form-card{padding:16px;border-radius:20px}
  .feature-panel{padding:20px;border-radius:24px}
  .band{padding:24px;border-radius:24px}
  .contact-card h2,.form-card h2{font-size:23px}
  .qr-box{grid-template-columns:96px 1fr;padding:12px}
  .qr-box img{width:96px}
  .footer{padding:15px 0;font-size:13px}
}

@media(max-width:420px){
  :root{--side:22px}
  .brand-title{font-size:16px}
  .menu-btn{width:40px;height:40px}
  .qr-box{grid-template-columns:1fr}
  .qr-box img{width:128px}
}


/* Final redesign: professional graphite / porcelain / copper */
:root{
  --bg:#f4eee3;
  --bg-soft:#fffaf1;
  --ink:#15120f;
  --muted:#635b52;
  --line:rgba(21,18,15,.11);
  --dark:#171412;
  --dark-2:#263633;
  --copper:#a86442;
  --jade:#2c655b;
  --blue:#263c50;
  --sand:#e2cda7;
  --site:1120px;
  --side:50px;
  --radius:24px;
  --shadow:0 20px 54px rgba(31,23,17,.11);
}
body{background:var(--bg);color:var(--ink)}
.site-bg{
  background:
    radial-gradient(circle at 8% 8%,rgba(168,100,66,.13),transparent 26%),
    radial-gradient(circle at 90% 8%,rgba(44,101,91,.11),transparent 28%),
    linear-gradient(135deg,#f8f1e8 0%,#eee1cf 54%,#faf6ef 100%)!important;
}
.site-bg:after{background-size:96px 96px;opacity:.42}
.container{width:min(var(--site),calc(100% - var(--side)));max-width:var(--site)}

.nav{height:74px}
.hero{padding:66px 0 62px}
.page-hero{padding:58px 0 28px}
.section{padding:58px 0}
.section + .section{padding-top:50px}
.hero + .section{padding-top:48px}
.page-hero + .section{padding-top:40px}

h1{font-size:clamp(42px,5.1vw,70px);letter-spacing:-2px}
.section h2{font-size:clamp(30px,3.25vw,46px)}
.lead{font-size:17px;line-height:1.78}
.section-head{gap:32px;margin-bottom:26px}
.section-head p{line-height:1.76}

.hero-grid{grid-template-columns:minmax(0,1.02fr) minmax(390px,.98fr);gap:44px}
.answer-panel{min-height:426px;padding:26px;border-radius:36px}
.panel-content{min-height:374px;gap:20px}
.mini-grid{gap:12px}
.mini{padding:16px;min-height:100px}
.answer-card{padding:22px;border-radius:26px}

.grid-3{gap:18px}
.grid-2,.split-feature,.contact-layout{gap:20px}
.card,.card.dark,.card.light{
  padding:24px 24px;
  border-radius:24px;
  box-shadow:0 12px 34px rgba(31,23,17,.065);
}
.card > * + *{margin-top:9px}
.card p{line-height:1.7}
.card .list{margin-top:10px}
.service-principles .card:nth-child(2),
.service-principles .card:nth-child(3){transform:none}

.band{padding:38px 42px;border-radius:34px}
.feature-panel{padding:30px;border-radius:32px}
.faq{gap:13px}
.faq details{padding:17px 19px;border-radius:21px}

.contact-layout{grid-template-columns:380px minmax(0,1fr)}
.contact-card,.form-card{padding:28px;border-radius:32px}
.form-grid{gap:13px}
.field input,.field select,.field textarea{border-radius:15px}
.contact-form__ip-status{display:none!important}
.contact-form__result{
  display:none;
  margin:12px 0 0;
  padding:11px 13px;
  border-radius:14px;
  font-size:14px;
  line-height:1.55;
}
.contact-form__result.is-visible{display:block}
.contact-form__result--success{
  background:rgba(44,101,91,.1);
  color:#1f5d50;
  border:1px solid rgba(44,101,91,.22);
}
.contact-form__result--error{
  background:rgba(168,100,66,.1);
  color:#8a4525;
  border:1px solid rgba(168,100,66,.24);
}

.menu-btn{font-size:0;color:transparent}
.menu-btn span,.menu-btn:before,.menu-btn:after{transition:.18s ease}

@media(max-width:980px){
  :root{--side:36px}
  .hero{padding:50px 0 46px}
  .page-hero{padding:46px 0 20px}
  .section{padding:46px 0}
  .section + .section{padding-top:40px}
  .hero-grid{grid-template-columns:1fr;gap:30px}
  .section-head{grid-template-columns:1fr;gap:10px;margin-bottom:20px}
  .contact-layout{grid-template-columns:1fr}
}
@media(max-width:900px){
  :root{--side:28px}
  .hero{padding:42px 0 40px}
  .page-hero{padding:40px 0 16px}
  .section{padding:40px 0}
  .section + .section{padding-top:34px}
  .page-hero + .section{padding-top:28px}
  .grid-3,.grid-2,.split-feature,.band{grid-template-columns:1fr}
  .grid-3,.grid-2,.service-principles,.split-feature,.contact-layout{gap:14px}
  .card,.card.dark,.card.light{padding:20px;border-radius:22px}
  .answer-panel{padding:22px;min-height:auto}
  .panel-content{min-height:auto}
  .form-grid{grid-template-columns:1fr}
}
@media(max-width:640px){
  :root{--side:24px}
  .nav{height:64px}
  .hero{padding:34px 0}
  .page-hero{padding:34px 0 12px}
  .section{padding:34px 0}
  .section + .section{padding-top:28px}
  h1{font-size:clamp(36px,10vw,54px)}
  .section h2{font-size:28px}
  .hero-actions{margin-top:20px}
  .pill-row{margin-top:14px}
  .mini-grid{grid-template-columns:1fr}
  .card,.card.dark,.card.light,.contact-card,.form-card{padding:17px;border-radius:20px}
  .feature-panel{padding:21px}
  .band{padding:25px;border-radius:24px}
  .qr-box{grid-template-columns:96px 1fr}
  .qr-box img{width:96px}
}