/* ============================================================
   好梦手优 haomengshouyou.com · 全站基础样式 style.css
   新能源科技风：浅绿 + 银灰 + 纯白
   仅包含：设计令牌 / 重置 / 排版 / 导航 / 页脚 / 悬浮客服 /
   通用组件 / 滚动动画 / 响应式断点。各页独有样式放各组 css 文件。
   ============================================================ */

/* ---------- 设计令牌 ---------- */
:root{
  --c-green:#0FA97B;
  --c-green-deep:#0B7D5C;
  --c-green-dark:#075E46;
  --c-green-soft:#E3F6EE;
  --c-green-mist:#F3FAF7;
  --c-silver:#E9EEF1;
  --c-silver-2:#DAE2E6;
  --c-slate:#55676B;
  --c-ink:#16221F;
  --c-line:#E2EAE7;
  --c-white:#FFFFFF;
  --grad-green:linear-gradient(135deg,#12B386 0%,#0A8F68 100%);
  --grad-mist:linear-gradient(160deg,#F3FAF7 0%,#E9EEF1 100%);
  --shadow-sm:0 2px 10px rgba(15,169,123,.08);
  --shadow-md:0 8px 30px rgba(15,169,123,.14);
  --shadow-lg:0 18px 50px rgba(11,125,92,.18);
  --r-sm:10px; --r-md:16px; --r-lg:24px; --r-xl:36px;
  --maxw:1200px;
  --nav-h:72px;
  --font-main:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}

/* ---------- 重置 ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-main);
  color:var(--c-ink);
  background:var(--c-white);
  line-height:1.7;
  font-size:16px;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .3s ease}
ul,ol{list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
table{border-collapse:collapse;width:100%}
::selection{background:var(--c-green);color:#fff}

/* ---------- 布局工具 ---------- */
.container{width:min(var(--maxw),92%);margin-inline:auto}
.section{padding:84px 0;position:relative}
.section-tight{padding:56px 0}
.bg-mist{background:var(--c-green-mist)}
.bg-silver{background:var(--c-silver)}
.bg-white{background:var(--c-white)}
.section-head{max-width:760px;margin:0 auto 48px;text-align:center}
.section-head .sec-tag{display:inline-flex;align-items:center;gap:6px;padding:5px 16px;border-radius:999px;
  background:var(--c-green-soft);color:var(--c-green-deep);font-size:13px;font-weight:600;letter-spacing:1px}
.section-head h2{font-size:34px;font-weight:800;line-height:1.35;margin:14px 0 10px}
.section-head h2 em{font-style:normal;color:var(--c-green)}
.section-head p{color:var(--c-slate);font-size:15px}
@media(max-width:768px){.section{padding:56px 0}.section-head h2{font-size:26px}}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 30px;border-radius:999px;
  font-weight:700;font-size:15px;line-height:1;transition:all .35s ease;position:relative;overflow:hidden;white-space:nowrap}
.btn svg{width:18px;height:18px;flex:none}
.btn-primary{background:var(--grad-green);color:#fff;box-shadow:var(--shadow-md)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.btn-primary::after{content:"";position:absolute;inset:0;background:linear-gradient(105deg,transparent 30%,rgba(255,255,255,.35) 50%,transparent 70%);
  transform:translateX(-120%);transition:transform .6s ease}
.btn-primary:hover::after{transform:translateX(120%)}
.btn-ghost{background:transparent;color:var(--c-green-deep);border:1.5px solid var(--c-green)}
.btn-ghost:hover{background:var(--c-green);color:#fff;transform:translateY(-3px)}
.btn-light{background:#fff;color:var(--c-green-deep);box-shadow:var(--shadow-md)}
.btn-light:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.btn-sm{padding:10px 22px;font-size:14px}
.btn-lg{padding:16px 40px;font-size:16px}
.btn-block{width:100%}

/* ---------- 徽标 / 标签 ---------- */
.chip{display:inline-block;padding:4px 14px;border-radius:999px;background:var(--c-silver);color:var(--c-slate);
  font-size:13px;font-weight:600}
.chip-green{background:var(--c-green-soft);color:var(--c-green-deep)}
.chip-line{border:1px solid var(--c-green);background:#fff;color:var(--c-green-deep)}

/* ---------- 顶部导航 ---------- */
.site-header{position:fixed;inset:0 0 auto 0;z-index:1000;height:var(--nav-h);
  background:transparent;transition:background .35s ease,box-shadow .35s ease}
.site-header .nav-wrap{height:var(--nav-h);display:flex;align-items:center;justify-content:space-between;gap:24px;
  width:min(var(--maxw),92%);margin-inline:auto}
.site-header .logo{display:flex;align-items:center;flex:none}
.site-header .logo img{height:44px;width:auto}
.main-nav .nav-list{display:flex;align-items:center;gap:4px}
.nav-list>li{position:relative}
.nav-list>li>a{display:flex;align-items:center;gap:5px;padding:10px 14px;border-radius:10px;font-size:15px;
  font-weight:600;color:var(--c-ink);position:relative}
.nav-list>li>a svg{width:12px;height:12px;transition:transform .3s ease}
.nav-list>li>a::after{content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:var(--c-green);transform:scaleX(0);transform-origin:left;transition:transform .3s ease}
.nav-list>li:hover>a::after,.nav-list>li.active>a::after{transform:scaleX(1)}
.nav-list>li.active>a{color:var(--c-green-deep)}
.nav-list>li:hover>a{color:var(--c-green-deep)}
.nav-list>li:hover>a svg{transform:rotate(180deg)}
.sub-menu{position:absolute;top:calc(100% + 10px);left:0;min-width:170px;background:#fff;border-radius:14px;
  box-shadow:var(--shadow-lg);padding:10px;opacity:0;visibility:hidden;transform:translateY(12px);
  transition:all .3s ease;border:1px solid var(--c-line)}
.nav-list>li:hover>.sub-menu{opacity:1;visibility:visible;transform:translateY(0)}
.sub-menu li a{display:flex;align-items:center;gap:8px;padding:10px 14px;border-radius:9px;font-size:14px;color:var(--c-slate);font-weight:500}
.sub-menu li a::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--c-green);flex:none;opacity:.4;transition:opacity .3s ease}
.sub-menu li a:hover{background:var(--c-green-soft);color:var(--c-green-deep)}
.sub-menu li a:hover::before{opacity:1}
.nav-cta{flex:none}
.nav-toggle{display:none;flex-direction:column;gap:5px;padding:10px;border-radius:10px;background:rgba(255,255,255,.85)}
.nav-toggle span{width:22px;height:2px;border-radius:2px;background:var(--c-ink);transition:all .3s ease}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
/* 滚动变色 */
.site-header.nav-scrolled{background:rgba(255,255,255,.94);backdrop-filter:blur(10px);box-shadow:0 4px 24px rgba(22,34,31,.08);border-bottom:1px solid var(--c-line)}
.site-header.nav-scrolled .nav-toggle{background:#fff}

/* ---------- 移动端抽屉 ---------- */
.mobile-panel{position:fixed;top:var(--nav-h);right:0;bottom:0;width:min(330px,86%);background:#fff;z-index:999;
  transform:translateX(105%);transition:transform .4s cubic-bezier(.22,.8,.3,1);box-shadow:-12px 0 40px rgba(22,34,31,.14);
  overflow-y:auto;padding:20px 18px 40px}
.mobile-panel.open{transform:translateX(0)}
.mobile-panel .m-nav>li>a{display:flex;justify-content:space-between;align-items:center;padding:14px 12px;font-size:16px;font-weight:700;border-bottom:1px solid var(--c-line)}
.mobile-panel .m-nav>li>a svg{width:14px;height:14px;transition:transform .3s ease}
.mobile-panel .m-nav>li.open>a svg{transform:rotate(180deg)}
.mobile-panel .m-sub{display:none;padding:4px 12px 12px 22px}
.mobile-panel .m-nav>li.open .m-sub{display:block}
.mobile-panel .m-sub a{display:block;padding:9px 10px;font-size:14px;color:var(--c-slate);border-radius:8px}
.mobile-panel .m-sub a:hover{background:var(--c-green-soft);color:var(--c-green-deep)}
.mobile-panel .m-cta{margin-top:18px;display:flex;flex-direction:column;gap:10px}
.mobile-overlay{position:fixed;inset:0;background:rgba(22,34,31,.45);z-index:998;opacity:0;visibility:hidden;transition:all .35s ease}
.mobile-overlay.show{opacity:1;visibility:visible}

/* ---------- 页脚 ---------- */
.site-footer{background:linear-gradient(180deg,#0E2B23 0%,#0A1F1A 100%);color:#CFE4DC;margin-top:0}
.footer-main{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding:64px 0 44px;width:min(var(--maxw),92%);margin-inline:auto}
.footer-col h3{color:#fff;font-size:16px;font-weight:700;margin-bottom:18px;position:relative;padding-bottom:10px}
.footer-col h3::after{content:"";position:absolute;left:0;bottom:0;width:26px;height:2px;border-radius:2px;background:var(--c-green)}
.footer-col ul li{margin-bottom:9px}
.footer-col ul a{font-size:14px;color:#A9C7BD;transition:all .3s ease;display:inline-flex;align-items:center;gap:6px}
.footer-col ul a::before{content:"";width:4px;height:4px;border-radius:50%;background:var(--c-green);opacity:.5}
.footer-col ul a:hover{color:#fff;transform:translateX(4px)}
.footer-about p{font-size:14px;color:#A9C7BD;margin:14px 0 18px;line-height:1.9}
.site-footer .footer-about>img{background:#fff;border-radius:12px;padding:6px 12px;box-shadow:0 4px 16px rgba(0,0,0,.3)}
.footer-about .footer-contact li{font-size:14px;color:#CFE4DC;margin-bottom:10px;display:flex;align-items:center;gap:8px}
.footer-about .footer-contact svg{width:16px;height:16px;color:var(--c-green);flex:none}
.footer-about .footer-contact a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;
  width:min(var(--maxw),92%);margin-inline:auto;font-size:13px;color:#8FAAA0}
.footer-bottom a{color:#8FAAA0}
.footer-bottom a:hover{color:#fff}

/* ---------- 悬浮客服栏 ---------- */
.side-bar{position:fixed;right:18px;bottom:90px;z-index:900;display:flex;flex-direction:column;gap:10px}
.side-bar a,.side-bar button{width:46px;height:46px;border-radius:14px;background:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-md);border:1px solid var(--c-line);transition:all .3s ease;position:relative}
.side-bar a svg,.side-bar button svg{width:22px;height:22px;color:var(--c-green-deep)}
.side-bar a:hover,.side-bar button:hover{background:var(--c-green);border-color:var(--c-green)}
.side-bar a:hover svg,.side-bar button:hover svg{color:#fff}
.side-bar .side-tip{position:absolute;right:56px;top:50%;transform:translateY(-50%);background:var(--c-ink);color:#fff;font-size:12px;
  padding:5px 12px;border-radius:8px;white-space:nowrap;opacity:0;visibility:hidden;transition:all .3s ease;pointer-events:none}
.side-bar a:hover .side-tip,.side-bar button:hover .side-tip{opacity:1;visibility:visible}
.side-bar .back-top{display:none}
.side-bar .back-top.show{display:flex}

/* ---------- 滚动渐入 / 模块缩放动画 ---------- */
[data-reveal]{opacity:0;transform:translateY(30px);transition:opacity .7s ease,transform .7s ease;
  transition-delay:var(--d,0s)}
[data-reveal].in-view{opacity:1;transform:translateY(0)}
[data-scale]{opacity:0;transform:scale(.9) translateY(24px);transition:opacity .8s ease,transform .8s cubic-bezier(.22,.8,.3,1);
  transition-delay:var(--d,0s)}
[data-scale].in-view{opacity:1;transform:scale(1) translateY(0)}
[data-scale].in-scale{transform:scale(.96) translateY(10px)}
.hover-lift{transition:transform .4s ease,box-shadow .4s ease}
.hover-lift:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg)}

/* ---------- 通用组件 ---------- */
/* 面包屑 */
.crumbs{padding:calc(var(--nav-h) + 26px) 0 22px;background:var(--grad-mist);border-bottom:1px solid var(--c-line)}
.crumbs .container{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-slate);flex-wrap:wrap}
.crumbs a:hover{color:var(--c-green-deep)}
.crumbs svg{width:12px;height:12px}
.crumbs .cur{color:var(--c-green-deep);font-weight:600}
/* 页内小标题 */
.block-title{display:flex;align-items:center;gap:12px;margin-bottom:28px}
.block-title .b-num{font-size:30px;font-weight:800;color:var(--c-green);line-height:1}
.block-title h3{font-size:24px;font-weight:800}
.block-title p{color:var(--c-slate);font-size:14px;margin-left:auto;max-width:420px;text-align:right}
/* 卡片基础 */
.card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);overflow:hidden;transition:all .4s ease}
.card-img{overflow:hidden;position:relative}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.card:hover .card-img img{transform:scale(1.06)}
/* FAQ 手风琴 */
.faq-item{background:#fff;border:1px solid var(--c-line);border-radius:14px;margin-bottom:12px;overflow:hidden;transition:box-shadow .3s ease}
.faq-item.open{box-shadow:var(--shadow-md)}
.faq-q{display:flex;align-items:center;gap:12px;padding:18px 22px;cursor:pointer;font-weight:700;font-size:16px}
.faq-q .q-mark{width:28px;height:28px;border-radius:9px;background:var(--c-green-soft);color:var(--c-green-deep);
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:14px;flex:none}
.faq-q .q-arrow{margin-left:auto;width:22px;height:22px;flex:none;transition:transform .3s ease;color:var(--c-slate)}
.faq-item.open .q-arrow{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease}
.faq-a .faq-a-inner{padding:0 22px 20px 62px;color:var(--c-slate);font-size:14.5px;line-height:1.9}
/* 表格 */
.tbl-wrap{overflow-x:auto;border-radius:var(--r-md);border:1px solid var(--c-line);background:#fff}
.tbl{min-width:640px;text-align:left}
.tbl th{background:var(--c-green-soft);color:var(--c-green-dark);font-weight:700;padding:14px 18px;font-size:14px;white-space:nowrap}
.tbl td{padding:13px 18px;font-size:14px;color:var(--c-slate);border-top:1px solid var(--c-line)}
.tbl tr:nth-child(even) td{background:var(--c-green-mist)}
.tbl td strong{color:var(--c-ink)}
/* 表单 */
.form-card{background:#fff;border-radius:var(--r-lg);padding:34px;box-shadow:var(--shadow-md);border:1px solid var(--c-line)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:13px;font-weight:600;color:var(--c-slate);margin-bottom:7px}
.form-group input,.form-group select,.form-group textarea{width:100%;padding:12px 15px;border:1.5px solid var(--c-line);
  border-radius:11px;background:#FAFCFB;outline:none;transition:border-color .3s ease,box-shadow .3s ease;font-size:14px}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--c-green);box-shadow:0 0 0 3px rgba(15,169,123,.12);background:#fff}
.form-group textarea{min-height:110px;resize:vertical}
/* 进度步骤条 */
.steps{display:flex;counter-reset:step}
.step-item{flex:1;text-align:center;position:relative;padding:0 10px}
.step-item::before{content:"";position:absolute;top:26px;left:-50%;width:100%;height:2px;background:var(--c-silver-2)}
.step-item:first-child::before{display:none}
.step-dot{width:52px;height:52px;margin:0 auto 12px;border-radius:50%;background:#fff;border:2px solid var(--c-green);
  display:flex;align-items:center;justify-content:center;position:relative;z-index:1;color:var(--c-green-deep);font-weight:800}
.step-item h4{font-size:15px;font-weight:700;margin-bottom:4px}
.step-item p{font-size:13px;color:var(--c-slate)}
/* 数字统计 */
.stat-num{font-size:40px;font-weight:800;color:var(--c-green-deep);line-height:1;font-variant-numeric:tabular-nums}
.stat-num sup{font-size:20px;margin-left:2px}

/* ---------- 响应式 ---------- */
@media(max-width:1024px){
  .main-nav{display:none}
  .nav-toggle{display:flex}
  .nav-cta .btn{padding:9px 16px;font-size:13px}
  .footer-main{grid-template-columns:1fr 1fr;gap:30px}
}
@media(max-width:768px){
  :root{--nav-h:62px}
  .footer-main{grid-template-columns:1fr;gap:26px;padding:48px 0 32px}
  .form-row{grid-template-columns:1fr}
  .block-title p{display:none}
  .steps{flex-direction:column;gap:0}
  .step-item{display:flex;gap:16px;text-align:left;padding:0 0 26px;position:relative}
  .step-item::before{display:none}
  .step-dot{width:44px;height:44px;margin:0;flex:none}
  .stat-num{font-size:30px}
  .side-bar{right:12px;bottom:76px}
  .side-bar a,.side-bar button{width:42px;height:42px}
}
@media(max-width:480px){
  .section-head h2{font-size:23px}
  .btn{padding:11px 22px;font-size:14px}
  .crumbs{padding-top:calc(var(--nav-h) + 20px)}
}