/* 榕楼科技 官网 · 融合设计系统
   主色青绿 #0CB5B0（logo同色）+ 深墨绿 #1A3C2A（深色区块）+ 暖金 #E8C15A（点缀）*/
:root{
  --brand:#0CB5B0;
  --brand-deep:#0A8F8B;
  --brand-dark:#0B7A76;
  --brand-light:#E6F7F6;
  --forest:#1A3C2A;
  --forest-deep:#123027;
  --forest-soft:#5A6B62;
  --gold:#E8C15A;
  --gold-deep:#C9A44A;
  --mist:#F7F9F8;
  --surface:#FFFFFF;
  --border:#E3ECEB;
  --ink:#1A3C2A;
  --ink-2:#3A5A4F;
  --ink-3:#7A9490;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei","Segoe UI",sans-serif;
  color:var(--ink);background:var(--surface);line-height:1.7;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
a{text-decoration:none;color:inherit;}
.wrap{max-width:1160px;margin:0 auto;padding:0 32px;}

/* ===== 导航（frosted，白底深绿字）===== */
.nav{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.82);
  backdrop-filter:blur(18px) saturate(170%);
  -webkit-backdrop-filter:blur(18px) saturate(170%);
  border-bottom:1px solid rgba(26,60,42,.07);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:66px;}
.nav-brand{display:flex;align-items:center;gap:10px;}
.nav-brand img{height:30px;width:auto;}
.nav-brand .name{font-size:17px;font-weight:700;letter-spacing:.5px;color:var(--forest);}
.nav-links{display:flex;align-items:center;gap:34px;}
.nav-links a{font-size:14.5px;color:var(--ink-2);transition:color .2s;position:relative;}
.nav-links a:hover{color:var(--brand-dark);}
.nav-links a.active{color:var(--brand-dark);font-weight:600;}
.nav-links a.active::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;background:var(--brand);border-radius:2px;}
.nav-cta{
  background:var(--brand);color:#fff;font-size:14px;font-weight:600;
  padding:9px 20px;border-radius:999px;transition:all .25s;
  box-shadow:0 4px 16px rgba(12,181,176,.24);
}
.nav-cta:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:0 8px 24px rgba(12,181,176,.34);}

/* ===== 通用 section ===== */
section{padding:88px 0;}
.sec-head{margin-bottom:48px;}
.sec-kicker{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.sec-kicker .idx{font-family:ui-monospace,Menlo,monospace;font-size:12px;color:var(--brand);letter-spacing:2px;font-weight:600;}
.sec-kicker .line{height:1px;flex:1;max-width:56px;background:linear-gradient(to right,var(--brand),transparent);}
.sec-title{font-size:clamp(28px,3.4vw,38px);font-weight:700;letter-spacing:-.5px;color:var(--forest);}
.sec-desc{font-size:16px;color:var(--forest-soft);margin-top:12px;max-width:680px;}
.sec-head.center{text-align:center;}
.sec-head.center .sec-kicker{justify-content:center;}
.sec-head.center .sec-kicker .line{display:none;}
.sec-head.center .sec-desc{margin-left:auto;margin-right:auto;}

/* ===== Hero（深墨绿 + 气根）===== */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background:linear-gradient(165deg,var(--forest) 0%,var(--forest-deep) 60%,#0E2A23 100%);
  padding:110px 0 100px;
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(ellipse at 78% 22%,rgba(12,181,176,.24),transparent 50%),
             radial-gradient(ellipse at 15% 85%,rgba(232,193,90,.12),transparent 50%);
}
.hero-grid{position:relative;display:grid;grid-template-columns:1.08fr .92fr;gap:48px;align-items:center;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:#A9E8E4;
  background:rgba(12,181,176,.14);border:1px solid rgba(12,181,176,.35);
  padding:6px 14px;border-radius:999px;margin-bottom:24px;
}
.hero-tag .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);}
.hero h1{
  font-size:clamp(40px,5.4vw,62px);font-weight:700;line-height:1.16;letter-spacing:-1px;
}
.hero h1 .hl{color:var(--gold);}
.hero-sub{font-size:clamp(16px,1.6vw,19px);color:#C9D6CE;margin-top:22px;max-width:520px;}
.hero-btns{display:flex;gap:14px;margin-top:36px;flex-wrap:wrap;}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:600;padding:13px 28px;border-radius:12px;
  transition:all .25s;cursor:pointer;border:1px solid transparent;
}
.btn .arr{transition:transform .25s;}
.btn:hover .arr{transform:translateX(4px);}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 20px rgba(12,181,176,.32);}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-2px);box-shadow:0 12px 28px rgba(12,181,176,.42);}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.35);}
.btn-ghost:hover{border-color:var(--gold);color:var(--gold);transform:translateY(-2px);}
.btn-white{background:#fff;color:var(--forest);box-shadow:0 8px 24px rgba(0,0,0,.18);}
.btn-white:hover{transform:translateY(-2px);box-shadow:0 14px 34px rgba(0,0,0,.24);}
.hero-note{font-size:13px;color:#8FB8B0;margin-top:22px;}

.hero-visual{position:relative;display:flex;align-items:center;justify-content:center;min-height:320px;}
.ring{position:absolute;border-radius:50%;border:1px solid rgba(12,181,176,.25);pointer-events:none;}
.ring-1{width:420px;height:420px;top:50%;left:50%;transform:translate(-50%,-50%);}
.ring-2{width:540px;height:540px;top:50%;left:50%;transform:translate(-50%,-50%);border-color:rgba(12,181,176,.12);}
.aerial-root{
  position:absolute;width:1px;background:linear-gradient(to bottom,rgba(12,181,176,0),rgba(12,181,176,.55));
  transform-origin:top center;animation:sway 5s ease-in-out infinite;
}
.aerial-root.r1{height:120px;top:32%;left:16%;}
.aerial-root.r2{height:86px;top:28%;left:27%;animation-delay:.6s;}
.aerial-root.r3{height:140px;top:34%;left:73%;animation-delay:1.2s;}
.aerial-root.r4{height:100px;top:28%;left:83%;animation-delay:1.8s;}
@keyframes sway{0%,100%{transform:rotate(0);}50%{transform:rotate(6deg);}}
.hero-logo-wrap{position:relative;z-index:2;}
.hero-logo-wrap img{height:290px;width:auto;filter:drop-shadow(0 22px 44px rgba(0,0,0,.35));}

/* ===== 三方品牌语 ===== */
.tri-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.tri-card{
  background:var(--surface);border:1px solid var(--border);border-radius:20px;
  padding:36px 30px;transition:all .3s;position:relative;overflow:hidden;
}
.tri-card:hover{transform:translateY(-4px);box-shadow:0 16px 40px rgba(26,60,42,.09);border-color:rgba(12,181,176,.3);}
.tri-card .num{
  font-family:ui-monospace,Menlo,monospace;font-size:13px;color:var(--brand);font-weight:600;letter-spacing:1px;
}
.tri-card h3{font-size:20px;font-weight:700;margin:12px 0 4px;color:var(--forest);}
.tri-card .tagline{font-size:15px;color:var(--gold-deep);font-weight:600;margin-bottom:14px;}
.tri-card p{font-size:14px;color:var(--forest-soft);}

/* ===== 产品能力 ===== */
.cap-group{margin-bottom:44px;}
.cap-group:last-child{margin-bottom:0;}
.cap-group-head{display:flex;align-items:center;gap:12px;margin-bottom:22px;}
.cap-group-head .tag{font-size:13px;font-weight:700;padding:5px 14px;border-radius:8px;color:#fff;}
.cap-group.broker .cap-group-head .tag{background:var(--brand);}
.cap-group.owner .cap-group-head .tag{background:var(--forest);}
.cap-group-head .tag-sub{font-size:14px;color:var(--ink-3);}
.cap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.cap-card{
  background:var(--surface);border:1px solid var(--border);border-radius:16px;
  padding:26px 24px;transition:all .3s;
}
.cap-card:hover{transform:translateY(-3px);box-shadow:0 12px 30px rgba(26,60,42,.08);border-color:rgba(12,181,176,.35);}
.cap-card .c-ico{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:21px;margin-bottom:16px;}
.cap-group.broker .cap-card .c-ico{background:var(--brand-light);}
.cap-group.owner .cap-card .c-ico{background:#EFF5F0;}
.cap-card h4{font-size:16px;font-weight:700;margin-bottom:6px;color:var(--forest);}
.cap-card p{font-size:13.5px;color:var(--ink-3);}

/* ===== 撮合中枢 ===== */
.match-section{background:var(--mist);}
.match-flow{
  display:grid;grid-template-columns:1fr auto 1fr auto 1fr;gap:0;align-items:center;
  background:var(--surface);border:1px solid var(--border);border-radius:20px;
  padding:44px 32px;box-shadow:0 10px 30px rgba(26,60,42,.05);
}
.match-node{text-align:center;padding:0 8px;}
.match-node .n-ico{width:54px;height:54px;border-radius:16px;margin:0 auto 12px;display:flex;align-items:center;justify-content:center;font-size:24px;}
.match-node.broker-side .n-ico{background:var(--brand-light);}
.match-node.owner-side .n-ico{background:#EFF5F0;}
.match-node.hub .n-ico{background:linear-gradient(135deg,var(--brand),var(--brand-dark));color:#fff;box-shadow:0 8px 20px rgba(12,181,176,.35);}
.match-node h4{font-size:15px;font-weight:700;margin-bottom:4px;color:var(--forest);}
.match-node p{font-size:12.5px;color:var(--ink-3);}
.match-arrow{display:flex;flex-direction:column;align-items:center;gap:4px;color:var(--brand);font-weight:700;font-size:12px;white-space:nowrap;padding:0 6px;}
.match-arrow .line{width:100%;min-width:44px;height:2px;background:linear-gradient(to right,var(--brand),var(--brand-deep));border-radius:2px;position:relative;}
.match-arrow .line::after{content:"";position:absolute;right:0;top:-3px;border-left:8px solid var(--brand-deep);border-top:4px solid transparent;border-bottom:4px solid transparent;}
.match-reverse{text-align:center;margin-top:22px;font-size:14px;color:var(--ink-3);}
.match-reverse b{color:var(--brand-dark);font-weight:600;}

/* ===== 数据底座 ===== */
.data-section{
  background:linear-gradient(160deg,var(--forest) 0%,var(--forest-deep) 55%,#0E2A23 100%);
  color:#E6F7F6;position:relative;overflow:hidden;
}
.data-section::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(ellipse at 72% 20%,rgba(12,181,176,.22),transparent 50%),
             radial-gradient(ellipse at 18% 82%,rgba(232,193,90,.12),transparent 50%);
}
.data-section .wrap{position:relative;}
.data-section .sec-title{color:#fff;}
.data-section .sec-desc{color:#B7CFCE;}
.data-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:12px;}
.data-card{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:18px;padding:32px 28px;transition:all .3s;}
.data-card:hover{background:rgba(255,255,255,.09);transform:translateY(-3px);}
.data-num{font-size:clamp(34px,3.6vw,46px);font-weight:800;letter-spacing:-1px;line-height:1.1;background:linear-gradient(180deg,#fff 20%,#7FD8D4 100%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;}
.data-card .unit{font-size:16px;font-weight:600;color:#9FD9D6;margin-left:2px;-webkit-text-fill-color:#9FD9D6;}
.data-card p{font-size:14px;color:#B7CFCE;margin-top:10px;}
.data-note{margin-top:28px;font-size:14px;color:#8FB8B6;display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
.data-note .pill{background:rgba(12,181,176,.2);border:1px solid rgba(12,181,176,.4);color:#7FD8D4;font-size:12.5px;font-weight:600;padding:4px 12px;border-radius:999px;}

/* ===== 品牌个性 ===== */
.trait-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.trait-card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:28px 22px;text-align:center;transition:all .3s;}
.trait-card:hover{transform:translateY(-3px);box-shadow:0 12px 28px rgba(26,60,42,.07);border-color:rgba(12,181,176,.3);}
.trait-card .num{font-family:ui-monospace,Menlo,monospace;font-size:12px;color:var(--gold-deep);letter-spacing:1px;}
.trait-card h4{font-size:18px;font-weight:700;margin:10px 0 6px;color:var(--forest);}
.trait-card p{font-size:13px;color:var(--ink-3);}

/* ===== 关于/品牌故事 ===== */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.about-copy p{font-size:15.5px;color:var(--ink-2);margin-bottom:14px;}
.about-copy .quote{border-left:3px solid var(--gold);padding:6px 0 6px 20px;margin-top:8px;font-size:16px;font-weight:600;color:var(--forest);line-height:1.7;}
.about-visual{display:flex;align-items:center;justify-content:center;position:relative;min-height:280px;}
.about-visual img{height:240px;width:auto;filter:drop-shadow(0 16px 32px rgba(12,181,176,.2));}

/* ===== 品牌定位表 ===== */
.pos-table{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;}
.pos-item{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:22px 24px;}
.pos-item .k{font-size:12.5px;color:var(--ink-3);letter-spacing:1px;margin-bottom:6px;}
.pos-item .v{font-size:16px;font-weight:600;color:var(--forest);}
.pos-item.wide{grid-column:span 2;}

/* ===== CTA ===== */
.cta-section{text-align:center;}
.cta-box{background:linear-gradient(135deg,var(--brand) 0%,var(--brand-dark) 100%);border-radius:24px;padding:64px 40px;color:#fff;position:relative;overflow:hidden;box-shadow:0 20px 50px rgba(12,181,176,.3);}
.cta-box::before{content:"";position:absolute;inset:0;background:radial-gradient(ellipse at 80% 0%,rgba(255,255,255,.18),transparent 55%);}
.cta-box h2{font-size:clamp(26px,3vw,36px);font-weight:700;position:relative;margin-bottom:12px;}
.cta-box p{font-size:16px;color:rgba(255,255,255,.9);position:relative;margin-bottom:32px;}
.cta-box .btn{position:relative;}

/* ===== 页内 hero（子页面）===== */
.page-hero{background:linear-gradient(165deg,var(--forest) 0%,var(--forest-deep) 100%);color:#fff;padding:72px 0 64px;position:relative;overflow:hidden;}
.page-hero::before{content:"";position:absolute;inset:0;background:radial-gradient(ellipse at 80% 20%,rgba(12,181,176,.2),transparent 50%);}
.page-hero .wrap{position:relative;}
.page-hero .kicker{font-family:ui-monospace,Menlo,monospace;font-size:12px;letter-spacing:3px;color:var(--gold);margin-bottom:14px;}
.page-hero h1{font-size:clamp(32px,4vw,46px);font-weight:700;letter-spacing:-.5px;}
.page-hero p{font-size:16px;color:#C9D6CE;margin-top:14px;max-width:640px;}

/* ===== 联系方式 ===== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;}
.contact-item{display:flex;gap:16px;padding:22px 0;border-bottom:1px solid var(--border);}
.contact-item .ico{width:44px;height:44px;border-radius:12px;background:var(--brand-light);display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0;}
.contact-item h4{font-size:15px;font-weight:700;color:var(--forest);margin-bottom:4px;}
.contact-item p{font-size:15px;color:var(--ink-2);}
.contact-item a{color:var(--brand-dark);font-weight:600;}
.contact-item a:hover{text-decoration:underline;}

/* ===== Footer ===== */
footer{background:var(--forest);color:#B7CFCE;padding:56px 0 36px;}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.foot-brand img{height:26px;width:auto;}
.foot-brand .name{font-size:16px;font-weight:700;color:#fff;}
.foot-desc{font-size:13.5px;color:#8FB8B0;max-width:320px;}
.foot-col h5{font-size:13px;font-weight:700;color:#fff;margin-bottom:14px;letter-spacing:.5px;}
.foot-col a{display:block;font-size:14px;color:#B7CFCE;margin-bottom:10px;transition:color .2s;}
.foot-col a:hover{color:var(--brand);}
.foot-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding-top:22px;display:flex;justify-content:space-between;align-items:center;font-size:13px;color:#7FA49C;flex-wrap:wrap;gap:10px;}

/* ===== 入场动画 ===== */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease;}
.reveal.in{opacity:1;transform:none;}

/* ===== 响应式 ===== */
@media (max-width:960px){
  .hero-grid,.about-grid,.contact-grid{grid-template-columns:1fr;gap:32px;}
  .hero{padding:64px 0 56px;}
  .hero-visual{min-height:240px;order:-1;}
  .hero-logo-wrap img{height:190px;}
  .tri-grid{grid-template-columns:1fr;}
  .cap-grid{grid-template-columns:1fr 1fr;}
  .trait-grid{grid-template-columns:1fr 1fr;}
  .match-flow{grid-template-columns:1fr;gap:20px;}
  .match-arrow{flex-direction:row;justify-content:center;}
  .match-arrow .line{min-width:20px;}
  .data-grid{grid-template-columns:1fr;}
  .pos-table{grid-template-columns:1fr;}
  .pos-item.wide{grid-column:span 1;}
  .nav-links{display:none;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:560px){
  .cap-grid,.trait-grid,.foot-grid{grid-template-columns:1fr;}
  .hero-btns{flex-direction:column;align-items:stretch;}
  .btn{justify-content:center;}
}
@media (prefers-reduced-motion:reduce){
  .aerial-root{animation:none;}
  .reveal{opacity:1;transform:none;transition:none;}
}