/* 爱合未来官网 · 全站样式
   视觉蓝本：aihe-portfolio（配色 / 卡片 / 阴影 / 渐变标题 / Hero 视频）
   版式：自适应全宽，桌面最宽 1120px
*/
:root{
  --g900:#16401A; --g800:#1B5E20; --g700:#2C5F2D; --g600:#43A047;
  --g500:#5CA84A; --g400:#97BC62; --g100:#E8F5E9; --g50:#F3F9EF;
  --or:#E8850C; --orl:#FFF4E2;
  --ink:#2B3329; --muted:#6B7A68; --line:#E4EDDD;
  --bg:#FBFCF8; --card:#FFFFFF;
  --sh:0 2px 10px rgba(44,95,45,.05), 0 12px 32px rgba(44,95,45,.06);
  --sh-lg:0 4px 16px rgba(44,95,45,.08), 0 20px 48px rgba(44,95,45,.10);
  --r:18px; --maxw:1120px;
}
*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.75;font-size:15px;
  overflow-x:hidden;-webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
svg{flex:0 0 auto}

/* ===== 容器与区块 ===== */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.sec{padding:76px 0;position:relative}
.sec-alt{background:linear-gradient(180deg,#FFFFFF 0%,var(--g50) 100%)}
.sec-white{background:#fff}
.sec-head{margin-bottom:34px}
.sec-bar{display:block;width:4px;height:20px;border-radius:3px;background:var(--g400);margin-bottom:14px}
.sec-no{
  font-size:11.5px;font-weight:700;color:var(--g400);letter-spacing:.18em;margin-bottom:10px;
}
.sec-head h2{font-size:clamp(24px,3.4vw,32px);font-weight:800;color:var(--g800);letter-spacing:.02em;line-height:1.35}
.sec-head h2 em{font-style:normal;color:var(--g600)}
.sec-head .sub{font-size:14px;color:var(--muted);margin-top:10px;line-height:1.9;max-width:760px}

/* ===== 通用小件 ===== */
.btn{
  display:inline-flex;align-items:center;gap:7px;
  font-size:15px;font-weight:500;padding:14px 28px;border-radius:100px;
  transition:transform .2s,box-shadow .2s,background .2s;
}
.btn:active{transform:scale(.96)}
.btn svg{width:15px;height:15px}
.btn-primary{background:var(--g700);color:#fff;box-shadow:0 6px 18px rgba(44,95,45,.22)}
.btn-primary:hover{background:var(--g800);box-shadow:0 8px 22px rgba(44,95,45,.28)}
.btn-ghost{background:#fff;color:var(--g700);border:1px solid #D6E5CE}
.btn-ghost:hover{border-color:var(--g400);background:var(--g50)}
.btn-on-dark{background:#fff;color:var(--g800)}
.btn-on-dark:active{background:var(--g100)}
.btn-outline{background:rgba(255,255,255,.10);color:#fff;border:1px solid rgba(255,255,255,.32)}
.btn-outline:hover{background:rgba(255,255,255,.18)}
.tags{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  font-size:12px;color:var(--g700);background:var(--g100);
  border:1px solid #CDE5C2;padding:5px 12px;border-radius:100px;font-weight:500;
}
.link-a{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13.5px;font-weight:600;color:var(--g700);
}
.link-a svg{width:14px;height:14px;transition:transform .2s}
.link-a:hover svg{transform:translateX(4px)}

/* ===== 导航 ===== */
.nav{
  position:sticky;top:0;z-index:80;
  background:rgba(251,252,248,.86);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid transparent;transition:border-color .3s,box-shadow .3s;
}
.nav.solid{border-bottom-color:var(--line);box-shadow:0 2px 14px rgba(44,95,45,.05)}
.nav-in{
  max-width:var(--maxw);margin:0 auto;padding:12px 24px;
  display:flex;align-items:center;gap:24px;
}
.logo{display:flex;align-items:center;gap:10px;margin-right:auto}
.logo img{height:30px;width:auto}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-links a{
  font-size:14px;color:#4E5B4A;position:relative;padding:4px 0;transition:color .2s;
}
.nav-links a:hover{color:var(--g700)}
.nav-links a.on{color:var(--g700);font-weight:600}
.nav-links a.on::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  border-radius:2px;background:var(--g400);
}
.nav-cta{
  display:inline-flex;align-items:center;gap:6px;white-space:nowrap;
  background:var(--g700);color:#fff;font-size:13px;font-weight:500;
  padding:9px 17px;border-radius:100px;transition:transform .2s,background .2s;
}
.nav-cta svg{width:14px;height:14px}
.nav-cta:hover{background:var(--g800)}
.nav-cta:active{transform:scale(.96)}
.nav-toggle{
  display:none;background:none;border:0;color:var(--g800);cursor:pointer;padding:6px;
}
.nav-toggle svg{width:24px;height:24px}
.mnav{display:none;border-top:1px solid var(--line);background:var(--bg)}
.mnav.open{display:block}
.mnav a{display:block;padding:13px 24px;font-size:14.5px;color:#4E5B4A;border-bottom:1px solid var(--line)}
.mnav .mnav-cta{
  background:var(--g700);color:#fff;font-weight:600;border-bottom:0;text-align:center;
}

/* ===== Hero ===== */
.hero{
  position:relative;min-height:calc(100vh - 58px);min-height:calc(100svh - 58px);
  display:flex;flex-direction:column;justify-content:center;
  background:#F7FBF3;overflow:hidden;
}
.hero-video{
  position:absolute;inset:0;width:100%;height:100%;
  object-fit:cover;z-index:0;pointer-events:none;background:#F7FBF3;
}
.hero-lastframe{
  position:absolute;inset:0;z-index:1;pointer-events:none;
  background-repeat:no-repeat;background-position:center;background-size:cover;
  opacity:0;transition:opacity .35s ease;
}
.hero-lastframe.on{opacity:1}
/* 花丛画布：盖在视频之上、文字之下 */
.hero-flowers{
  position:absolute;inset:0;width:100%;height:100%;
  z-index:3;pointer-events:none;
}
.hero-in{
  position:relative;z-index:4;
  max-width:var(--maxw);margin:0 auto;padding:60px 24px 120px;width:100%;
  text-align:left;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  font-size:11.5px;color:var(--g700);font-weight:600;letter-spacing:.06em;
  background:rgba(255,255,255,.72);border:1px solid #D2E8C8;
  padding:6px 14px;border-radius:100px;margin-bottom:22px;
}
.hero-badge i{
  width:6px;height:6px;border-radius:50%;background:var(--g600);
  box-shadow:0 0 0 0 rgba(67,160,71,.5);animation:pulse 2s infinite;
}
@keyframes pulse{70%{box-shadow:0 0 0 7px rgba(67,160,71,0)}100%{box-shadow:0 0 0 0 rgba(67,160,71,0)}}
.hero-title{
  display:block;width:fit-content;margin:0 0 16px;
  font-size:clamp(60px,8vw,96px);line-height:1.12;font-weight:800;letter-spacing:.03em;
  background:linear-gradient(102deg,#22601F 0%,#4E9E3B 26%,#9DBE3C 50%,#EFB52B 74%,#E8850C 100%);
  -webkit-background-clip:text;background-clip:text;
  color:transparent;-webkit-text-fill-color:transparent;
  filter:drop-shadow(0 3px 10px rgba(90,150,60,.14));
}
.hero-title em{font-style:normal}
.hero-sub{
  font-size:17px;font-weight:600;color:var(--muted);line-height:1.85;
  max-width:560px;margin:0 0 30px;
  /* 白色细描边 + 柔光：不抢色、不粘字，只在复杂背景上托出文字 */
  -webkit-text-stroke:0.5px rgba(255,255,255,.9);
  paint-order:stroke fill;
  text-shadow:0 0 6px rgba(255,255,255,.9),0 2px 4px rgba(0,0,0,.08);
  letter-spacing:.02em;
}
.hero-sub b{color:var(--g700);font-weight:700}
.hero-btns{display:flex;gap:12px;flex-wrap:wrap;justify-content:flex-start;margin-bottom:46px}
/* 事实数据 */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:0}
.stat{
  background:#fff;border:1px solid var(--line);border-radius:15px;
  padding:16px 14px;text-align:center;box-shadow:var(--sh);
}
.stat b{display:block;font-size:28px;font-weight:800;color:var(--g700);line-height:1.15}
.stat span{font-size:11.5px;color:var(--muted);display:block;margin-top:4px}

/* ===== 通用卡片 ===== */
.assets{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.as{
  background:#fff;border:1px solid var(--line);border-radius:15px;
  padding:20px 18px;box-shadow:var(--sh);border-top:3px solid var(--g600);
}
.as:nth-child(2){border-top-color:var(--or)}
.as:nth-child(3){border-top-color:#457B9D}
.as:nth-child(4){border-top-color:#E76F51}
.as .ak{font-size:10.5px;font-weight:700;letter-spacing:.14em;color:var(--g400);margin-bottom:9px}
.as h3{font-size:15.5px;font-weight:700;color:var(--g800);margin-bottom:7px}
.as p{font-size:12.5px;color:#4E5B4A;line-height:1.85}

/* 首页板块组件见 home.css */
.case-note{
  font-size:12.5px;color:var(--muted);line-height:1.9;margin-top:18px;
  background:var(--g50);border:1px dashed #D6E5CE;border-radius:14px;padding:14px 18px;
}

/* ===== 痛点诊断 CTA ===== */
.contact{
  background:linear-gradient(165deg,#2C5F2D 0%,#1B5E20 55%,#16401A 100%);
  color:#fff;text-align:center;padding:66px 24px;position:relative;overflow:hidden;
}
.contact::before{
  content:"";position:absolute;top:-80px;right:-80px;width:260px;height:260px;
  border-radius:50%;background:rgba(151,188,98,.16);
}
.contact::after{
  content:"";position:absolute;bottom:-100px;left:-70px;width:230px;height:230px;
  border-radius:50%;background:rgba(232,133,12,.14);
}
.contact-in{position:relative;z-index:2;max-width:820px;margin:0 auto}
.contact h2{font-size:clamp(23px,3vw,29px);font-weight:800;letter-spacing:.02em;margin-bottom:12px}
.contact .sub{font-size:14px;color:rgba(255,255,255,.78);line-height:1.9;margin-bottom:30px}
.cta-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:30px}
.cta-steps div{
  background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.16);
  border-radius:14px;padding:16px 18px;text-align:left;
}
.cta-steps b{
  display:block;font-size:11px;font-weight:700;letter-spacing:.16em;
  color:rgba(151,188,98,.9);margin-bottom:6px;
}
.cta-steps span{font-size:13.5px;color:rgba(255,255,255,.92);line-height:1.7}
.cta-btns{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

/* ===== 页脚 ===== */
footer{
  background:#16401A;color:rgba(255,255,255,.55);
  text-align:center;font-size:11.5px;padding:22px 20px 30px;
  line-height:1.9;letter-spacing:.02em;
}
footer .fbrand{
  font-size:16px;font-weight:700;color:rgba(255,255,255,.9);
  letter-spacing:.16em;margin-bottom:12px;
}
footer .fbrand i{
  display:block;font-style:normal;font-size:9px;font-weight:400;
  color:rgba(151,188,98,.85);letter-spacing:.24em;margin-top:4px;
}

/* ===== 回到顶部 ===== */
.top{
  position:fixed;right:24px;bottom:24px;z-index:90;
  width:42px;height:42px;border-radius:50%;
  background:var(--g700);color:#fff;border:0;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 18px rgba(44,95,45,.28);
  opacity:0;pointer-events:none;transform:translateY(8px);
  transition:opacity .25s,transform .25s,background .2s;
}
.top svg{width:19px;height:19px}
.top.show{opacity:1;pointer-events:auto;transform:none}
.top:hover{background:var(--g800)}

/* ===== 滚动出现 ===== */
.rv{opacity:0;transform:translateY(22px);transition:opacity .7s cubic-bezier(.2,.7,.3,1),transform .7s cubic-bezier(.2,.7,.3,1)}
.rv.in{opacity:1;transform:none}

/* ===== 响应式 ===== */
@media(max-width:1000px){
  .assets{grid-template-columns:1fr 1fr}
}
@media(max-width:900px){
  .nav-links,.nav-cta{display:none}
  .nav-toggle{display:block}
  .nav-in{gap:12px;padding:10px 20px}
  .wrap{padding:0 20px}
  .hero-in{padding:44px 20px 80px}
  .sec{padding:56px 0}
  .stats{grid-template-columns:1fr 1fr}
  .cta-steps{grid-template-columns:1fr}
}
@media(max-width:560px){
  .assets{grid-template-columns:1fr}
  .btn{font-size:14px;padding:13px 22px}
  .contact{padding:52px 20px}
  .top{right:16px;bottom:16px}
}

@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .rv{opacity:1;transform:none}
}
@media print{
  .nav,.top,.hero-video,.hero-lastframe{display:none!important}
}