/* ===== Reset & Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.6;color:#1a1a1a;background:#fff;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:none;background:none}
img{max-width:100%;height:auto;display:block}
ul{list-style:none}

/* ===== Brand Tokens ===== */
:root{
  --ym-green:#6B7B5A;
  --ym-cream:#F5F0E8;
  --ym-wood:#C4A882;
  --ym-terra:#B55A4B;
  --ym-dark:#1a1a1a;
  --ym-gray:#666;
  --ym-gray-light:#999;
  --ym-border:#e8e8e8;
  --ym-radius-sm:6px;
  --ym-radius:10px;
  --ym-radius-lg:12px;
  --ym-gap:16px;
  --ym-gap-lg:24px;
  --ym-maxw:1200px;
  --ym-transition:.2s ease;
}

/* ===== Layout ===== */
.ym-container{max-width:var(--ym-maxw);margin:0 auto;padding:0 var(--ym-gap)}
.ym-section{padding:64px 0}
.ym-section-title{font-size:26px;font-weight:500;margin-bottom:8px;display:flex;align-items:center;gap:10px}
.ym-section-sub{color:var(--ym-gray);font-size:15px;margin-bottom:36px}
.ym-dot{width:6px;height:6px;border-radius:50%;background:var(--ym-green);display:inline-block;flex-shrink:0}

/* ===== Header / Nav ===== */
.ym-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--ym-border)}
.ym-nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.ym-logo{display:flex;align-items:center;gap:10px;font-weight:500;font-size:17px;letter-spacing:2px;color:var(--ym-dark)}
.ym-logo img{width:auto;height:36px;max-width:120px;object-fit:contain;display:block}
.ym-nav-links{display:flex;gap:32px;font-size:14px}
.ym-nav-links a{color:var(--ym-gray);transition:color var(--ym-transition)}
.ym-nav-links a:hover{color:var(--ym-green)}
.ym-nav-toggle{display:none;width:40px;height:40px;align-items:center;justify-content:center;color:var(--ym-dark)}
.ym-nav-toggle svg{width:22px;height:22px}
.ym-mobile-menu{display:none;position:absolute;top:64px;left:0;right:0;background:rgba(255,255,255,.97);backdrop-filter:blur(12px);border-bottom:1px solid var(--ym-border);padding:8px 0}
.ym-mobile-menu.open{display:block}
.ym-mobile-menu a{display:block;padding:14px var(--ym-gap);font-size:15px;color:var(--ym-gray);border-bottom:1px solid #f5f5f5}
.ym-mobile-menu a:last-child{border-bottom:none}

/* ===== Hero ===== */
.ym-hero{text-align:center;padding:80px var(--ym-gap) 64px}
.ym-hero-badge{display:inline-flex;align-items:center;gap:6px;padding:6px 16px;border-radius:100px;font-size:13px;color:var(--ym-green);background:rgba(107,123,90,.08);border:1px solid rgba(107,123,90,.18);margin-bottom:20px}
.ym-hero h1{font-size:40px;font-weight:500;line-height:1.2;margin-bottom:16px;letter-spacing:1px}
.ym-hero-desc{font-size:17px;color:var(--ym-gray);max-width:560px;margin:0 auto 32px}
.ym-hero-cta{display:inline-flex;gap:12px;flex-wrap:wrap;justify-content:center}
.ym-btn{padding:12px 28px;border-radius:var(--ym-radius-sm);font-size:14px;font-weight:500;transition:all var(--ym-transition);min-height:44px}
.ym-btn-primary{background:var(--ym-dark);color:#fff}
.ym-btn-primary:hover{opacity:.85}
.ym-btn-outline{background:transparent;color:var(--ym-gray);border:1px solid var(--ym-border)}
.ym-btn-outline:hover{border-color:var(--ym-dark);color:var(--ym-dark)}

/* ===== Services ===== */
.ym-services{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--ym-gap)}
.ym-service-card{padding:28px 22px;border-radius:var(--ym-radius);border:1px solid var(--ym-border);transition:all var(--ym-transition)}
.ym-service-card:hover{border-color:rgba(107,123,90,.35);transform:translateY(-3px)}
.ym-service-icon{width:44px;height:44px;border-radius:var(--ym-radius-sm);display:flex;align-items:center;justify-content:center;margin-bottom:16px;font-size:20px}
.ym-sc1 .ym-service-icon{background:rgba(107,123,90,.1)}
.ym-sc2 .ym-service-icon{background:rgba(196,168,130,.15)}
.ym-sc3 .ym-service-icon{background:rgba(181,90,75,.1)}
.ym-sc4 .ym-service-icon{background:rgba(107,123,90,.08)}
.ym-service-card h3{font-size:16px;font-weight:500;margin-bottom:8px}
.ym-service-card p{font-size:14px;color:var(--ym-gray);line-height:1.7}

/* ===== Story ===== */
.ym-story{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.ym-story-text{font-size:15px;color:var(--ym-gray);line-height:2}
.ym-story-text p{margin-bottom:16px}
.ym-story-text strong{color:var(--ym-dark);font-weight:500}
.ym-story-visual{aspect-ratio:4/3;border-radius:var(--ym-radius);border:1px solid var(--ym-border);display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden;background:var(--ym-cream)}
.ym-story-visual::before{content:'';position:absolute;width:120px;height:120px;border-radius:50%;background:rgba(107,123,90,.08);top:18%;left:12%}
.ym-story-visual::after{content:'';position:absolute;width:80px;height:80px;border-radius:50%;background:rgba(196,168,130,.12);bottom:18%;right:18%}
.ym-story-year{position:relative;z-index:1;font-size:48px;font-weight:500;color:#d4d4d4;font-variant-numeric:tabular-nums}

/* ===== Highlights ===== */
.ym-highlights{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--ym-gap)}
.ym-hl-card{padding:24px;border-radius:var(--ym-radius);border:1px solid var(--ym-border);position:relative;overflow:hidden}
.ym-hl-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:var(--ym-green);opacity:.5}
.ym-hl-card:nth-child(2)::before{background:var(--ym-wood)}
.ym-hl-card:nth-child(3)::before{background:var(--ym-terra)}
.ym-hl-card:nth-child(4)::before{background:var(--ym-green);opacity:.35}
.ym-hl-card:nth-child(5)::before{background:var(--ym-wood);opacity:.6}
.ym-hl-num{font-size:28px;font-weight:500;color:#ddd;margin-bottom:8px;font-variant-numeric:tabular-nums}
.ym-hl-card h4{font-size:15px;font-weight:500;margin-bottom:6px}
.ym-hl-card p{font-size:14px;color:var(--ym-gray);line-height:1.7}

/* ===== Promises ===== */
.ym-promises{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--ym-gap)}
.ym-promise{display:flex;align-items:flex-start;gap:14px;padding:20px 22px;border-radius:var(--ym-radius);border:1px solid var(--ym-border)}
.ym-promise-check{width:22px;height:22px;border-radius:50%;background:rgba(107,123,90,.12);display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:2px;color:var(--ym-green)}
.ym-promise-check svg{width:12px;height:12px}
.ym-promise h4{font-size:15px;font-weight:500;margin-bottom:4px}
.ym-promise p{font-size:14px;color:var(--ym-gray)}

/* ===== Contact ===== */
.ym-contact{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.ym-contact-info h3{font-size:18px;font-weight:500;margin-bottom:20px}
.ym-contact-row{display:flex;align-items:flex-start;gap:12px;margin-bottom:14px;font-size:15px;color:var(--ym-gray)}
.ym-contact-row svg{width:18px;height:18px;color:var(--ym-green);flex-shrink:0;margin-top:3px}
.ym-contact-row a{color:var(--ym-dark);transition:color var(--ym-transition)}
.ym-contact-row a:hover{color:var(--ym-green)}
.ym-contact-map{aspect-ratio:16/10;border-radius:var(--ym-radius);border:1px solid var(--ym-border);background:var(--ym-cream);display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}
.ym-contact-map::before{content:'';position:absolute;inset:0;background-image:linear-gradient(rgba(0,0,0,.06)1px,transparent 1px),linear-gradient(90deg,rgba(0,0,0,.06)1px,transparent 1px);background-size:24px 24px}
.ym-map-pin{position:relative;z-index:1;width:40px;height:40px;background:var(--ym-green);border-radius:50% 50% 50% 0;transform:rotate(-45deg);display:flex;align-items:center;justify-content:center;box-shadow:0 3px 10px rgba(107,123,90,.3)}
.ym-map-pin svg{transform:rotate(45deg);width:16px;height:16px;color:#fff}

/* ===== Footer ===== */
.ym-footer{padding:40px var(--ym-gap);border-top:1px solid var(--ym-border);text-align:center;color:var(--ym-gray-light);font-size:13px}
.ym-footer-brand{display:flex;align-items:center;justify-content:center;gap:8px;margin-bottom:12px;font-weight:500;font-size:15px;color:var(--ym-gray)}
.ym-footer-brand img{width:auto;height:24px;max-width:80px;object-fit:contain;display:block}

/* ===== Scroll Reveal ===== */
.ym-reveal{opacity:0;transform:translateY(20px);transition:opacity .6s ease,transform .6s ease}
.ym-reveal.visible{opacity:1;transform:translateY(0)}

/* ===== Responsive ===== */
@media(max-width:768px){
  .ym-section{padding:48px 0}
  .ym-section-title{font-size:22px}
  .ym-section-sub{font-size:14px}
  .ym-hero{padding:56px var(--ym-gap) 44px}
  .ym-hero h1{font-size:28px}
  .ym-hero-desc{font-size:15px}
  .ym-services{grid-template-columns:1fr}
  .ym-highlights{grid-template-columns:1fr}
  .ym-story{grid-template-columns:1fr}
  .ym-story-visual{aspect-ratio:16/9}
  .ym-promises{grid-template-columns:1fr}
  .ym-contact{grid-template-columns:1fr;gap:32px}
  .ym-contact-map{aspect-ratio:16/9}
}
@media(max-width:640px){
  .ym-nav-links{display:none}
  .ym-nav-toggle{display:flex}
  .ym-hero h1{font-size:24px}
  .ym-hero-desc{font-size:14px}
  .ym-btn{padding:12px 22px;font-size:13px;min-width:130px}
  .ym-contact-row{font-size:14px}
  .ym-story-text{font-size:14px}
}