/* ==========================================================================
   重庆环循废品回收 — 设计系统
   苹果式排版语言 · 环保绿品牌色
   大留白 / 大字号 / 毛玻璃吸顶导航 / 胶囊按钮 / 圆角卡片 / 滚动动效
   ========================================================================== */

:root{
  /* 品牌绿 */
  --green:#157f4a;
  --green-600:#0f6b3d;
  --green-700:#0a5230;
  --green-900:#062b1a;
  --green-tint:#eef7f1;
  --green-tint-2:#e2f1e8;

  /* 中性色（苹果灰阶） */
  --ink:#1d1d1f;
  --ink-2:#333336;
  --muted:#6e6e73;
  --gray:#f5f5f7;
  --line:#d2d2d7;
  --line-soft:rgba(0,0,0,.08);
  --white:#fff;

  --radius:20px;
  --radius-sm:14px;
  --radius-pill:980px;
  --maxw:1040px;
  --nav-h:52px;

  --shadow-sm:0 2px 10px rgba(0,0,0,.05),0 1px 2px rgba(0,0,0,.04);
  --shadow-md:0 10px 34px rgba(0,0,0,.09),0 2px 8px rgba(0,0,0,.05);
  --shadow-lg:0 24px 60px rgba(0,0,0,.14);

  --ease:cubic-bezier(.25,.1,.25,1);
}

*,*::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,"SF Pro Display","SF Pro Text",
    "PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Helvetica,Arial,sans-serif;
  font-size:17px;
  line-height:1.47059;
  letter-spacing:-.022em;
  color:var(--ink);
  background:var(--white);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}

img{max-width:100%;height:auto;display:block}
a{color:var(--green-600);text-decoration:none;transition:color .25s var(--ease),opacity .25s var(--ease)}
a:hover{color:var(--green);text-decoration:none}

/* ---------- 排版 ---------- */
h1,h2,h3,h4{font-weight:600;letter-spacing:-.028em;line-height:1.1}
h1{font-size:clamp(34px,5.2vw,56px)}
h2{font-size:clamp(26px,3.6vw,40px);letter-spacing:-.03em;color:var(--ink)}
h3{font-size:19px;letter-spacing:-.02em}
p{color:var(--ink-2)}

.eyebrow{
  display:block;
  font-size:14px;font-weight:600;letter-spacing:.04em;
  color:var(--green);margin-bottom:10px;
}
.lead{font-size:clamp(19px,2.1vw,24px);line-height:1.42;color:var(--muted);letter-spacing:-.02em}
.section-sub{font-size:19px;color:var(--muted);max-width:640px;margin:14px auto 0}
.muted{color:var(--muted)}

/* ==========================================================================
   导航 — 毛玻璃吸顶
   ========================================================================== */
header.site{
  position:sticky;top:0;z-index:100;
  height:var(--nav-h);
  background:rgba(255,255,255,.72);
  -webkit-backdrop-filter:saturate(180%) blur(20px);
  backdrop-filter:saturate(180%) blur(20px);
  border-bottom:1px solid var(--line-soft);
  padding:0 22px;
}
.nav{
  max-width:var(--maxw);height:var(--nav-h);margin:0 auto;
  display:flex;align-items:center;gap:6px;
}
.nav .brand{
  font-size:15px;font-weight:600;letter-spacing:-.02em;
  color:var(--ink);margin-right:auto;white-space:nowrap;
}
.nav .brand::before{
  content:"";display:inline-block;width:9px;height:9px;border-radius:50%;
  background:var(--green);margin-right:9px;vertical-align:1px;
}
.nav a{
  font-size:13px;color:var(--ink);opacity:.86;
  padding:6px 12px;border-radius:var(--radius-pill);
  transition:opacity .25s var(--ease),background .25s var(--ease),color .25s var(--ease);
}
.nav a:hover{opacity:1;color:var(--green);background:var(--green-tint)}

.nav-toggle{
  display:none;width:40px;height:40px;border:0;background:transparent;
  cursor:pointer;padding:0;
}
.nav-toggle span{
  display:block;width:18px;height:1.6px;background:var(--ink);margin:4px auto;
  border-radius:2px;transition:transform .3s var(--ease),opacity .3s var(--ease);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5.6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5.6px) rotate(-45deg)}

/* ==========================================================================
   按钮
   ========================================================================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--green);color:#fff;font-weight:500;font-size:17px;
  padding:13px 28px;border-radius:var(--radius-pill);border:0;cursor:pointer;
  letter-spacing:-.015em;white-space:nowrap;
  transition:background .25s var(--ease),transform .2s var(--ease),box-shadow .25s var(--ease),opacity .25s var(--ease);
}
.btn:hover{background:var(--green-600);color:#fff;transform:translateY(-1px);box-shadow:0 8px 22px rgba(21,127,74,.28)}
.btn:active{transform:scale(.975)}
.btn-ghost{background:transparent;color:var(--green);border:1px solid var(--line)}
.btn-ghost:hover{background:var(--green-tint);box-shadow:none;color:var(--green-600)}
.btn-white{background:#fff;color:var(--green-700)}
.btn-white:hover{background:#fff;color:var(--green-900);box-shadow:0 10px 28px rgba(0,0,0,.2)}
.btn-sm{font-size:15px;padding:10px 20px}

/* ==========================================================================
   首页 Hero
   ========================================================================== */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(160deg,#1a8a52 0%,var(--green) 42%,var(--green-700) 100%);
  color:#fff;text-align:center;
  display:flex;flex-direction:column;justify-content:center;align-items:center;
  min-height:min(86vh,780px);
  padding:clamp(64px,10vw,104px) 22px clamp(48px,7vw,76px);
}
.hero::before{
  content:"";position:absolute;inset:-30% -10% auto -10%;height:70%;
  background:radial-gradient(closest-side,rgba(255,255,255,.26),transparent 72%);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;left:50%;bottom:-52%;width:120%;height:80%;
  transform:translateX(-50%);
  background:radial-gradient(closest-side,rgba(0,0,0,.2),transparent 70%);
  pointer-events:none;
}
.hero > *{position:relative;z-index:2}
.hero .hero-brand{
  font-size:15px;font-weight:600;letter-spacing:.02em;
  color:rgba(255,255,255,.82);margin-bottom:18px;
}
.hero h1{
  font-size:clamp(40px,6.6vw,76px);font-weight:700;letter-spacing:-.04em;
  line-height:1.06;color:#fff;margin:0 auto;max-width:14em;
}
.hero h1 .thin{font-weight:300;opacity:.92}
.hero p.hero-sub{
  font-size:clamp(17px,2vw,22px);line-height:1.45;letter-spacing:-.022em;
  color:rgba(255,255,255,.88);max-width:660px;margin:22px auto 0;
}
.hero .hero-actions{
  display:flex;flex-wrap:wrap;gap:14px;justify-content:center;align-items:center;
  margin-top:34px;
}
.hero .hero-note{
  font-size:14px;color:rgba(255,255,255,.72);margin-top:20px;letter-spacing:-.01em;
}
.scroll-cue{
  display:block;margin:48px auto 0;width:26px;height:26px;
  color:rgba(255,255,255,.7);animation:cue 2.4s var(--ease) infinite;
}
.scroll-cue svg{width:26px;height:26px;display:block}
@keyframes cue{
  0%,100%{transform:translateY(0);opacity:.5}
  50%{transform:translateY(8px);opacity:1}
}

/* 内页 Hero（其它页面大标题区） */
.hero-inner{
  background:linear-gradient(160deg,#1a8a52 0%,var(--green) 50%,var(--green-700) 100%);
  color:#fff;padding:clamp(46px,6.5vw,76px) 22px clamp(40px,5vw,60px);
  text-align:center;
}
.hero-inner h1{color:#fff;font-size:clamp(30px,4.4vw,50px);letter-spacing:-.035em}
.hero-inner p{color:rgba(255,255,255,.88);max-width:620px;margin:16px auto 0;font-size:19px}
.hero-inner .breadcrumb{color:rgba(255,255,255,.66);margin:0 0 16px;text-align:center}
.hero-inner .breadcrumb a{color:rgba(255,255,255,.82)}
.hero-inner .breadcrumb a:hover{color:#fff}

/* ==========================================================================
   布局容器 / 分区
   ========================================================================== */
.container{max-width:var(--maxw);margin:0 auto;padding:clamp(40px,6vw,64px) 22px}
.section{padding:clamp(60px,8vw,104px) 22px}
.section > .inner{max-width:var(--maxw);margin:0 auto}
.section--gray{background:var(--gray)}
.section--tint{background:var(--green-tint)}
.section-head{text-align:center;max-width:760px;margin:0 auto clamp(34px,4.5vw,56px)}
.section-head h2{margin-top:2px}

.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:22px;letter-spacing:-.01em}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--green)}
h1.page-title{font-size:clamp(30px,4vw,44px);letter-spacing:-.035em;margin-bottom:14px}

/* ==========================================================================
   卡片 / 网格
   ========================================================================== */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(238px,1fr));gap:20px}
.grid-2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}

.card{
  background:#fff;border-radius:var(--radius);
  padding:28px 26px;box-shadow:var(--shadow-sm);
  border:1px solid rgba(0,0,0,.04);
}
.card ul,.card ol{margin:0 0 0 20px}
.card ul:last-child,.card ol:last-child{margin-bottom:0}
.card li{margin:9px 0}

.svc{
  display:flex;flex-direction:column;
  background:#fff;border-radius:var(--radius);
  padding:26px 24px;border:1px solid rgba(0,0,0,.05);
  box-shadow:var(--shadow-sm);position:relative;overflow:hidden;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s var(--ease);
}
.svc::after{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;
  background:linear-gradient(90deg,var(--green),#4cc07f);
  transform:scaleX(0);transform-origin:left;transition:transform .4s var(--ease);
}
.svc:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:rgba(21,127,74,.22)}
.svc:hover::after{transform:scaleX(1)}
.svc h3{margin:0 0 7px;color:var(--ink);font-size:18px}
.svc p{font-size:15px;color:var(--muted);margin:0;line-height:1.45}
.svc .svc-arrow{
  margin-top:auto;padding-top:16px;font-size:14px;font-weight:500;color:var(--green);
  opacity:0;transform:translateX(-6px);transition:opacity .3s var(--ease),transform .3s var(--ease);
}
.svc:hover .svc-arrow{opacity:1;transform:translateX(0)}

/* 特性列表（为什么选择我们） */
.feature-list{display:grid;gap:0;max-width:820px;margin:0 auto}
.feature{
  display:flex;gap:18px;align-items:flex-start;
  padding:26px 4px;border-bottom:1px solid var(--line);
}
.feature:last-child{border-bottom:0}
.feature .fi{
  flex:0 0 44px;height:44px;border-radius:12px;background:var(--green-tint);
  display:flex;align-items:center;justify-content:center;
  color:var(--green);font-size:20px;line-height:1;
}
.feature h3{margin:0 0 6px;font-size:19px}
.feature p{margin:0;color:var(--muted);font-size:16px}

/* 数据条 */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:18px;text-align:center}
.stat{background:#fff;border-radius:var(--radius);padding:32px 20px;box-shadow:var(--shadow-sm);border:1px solid rgba(0,0,0,.04)}
.stat .n{font-size:clamp(32px,4.4vw,46px);font-weight:700;letter-spacing:-.04em;color:var(--green);line-height:1.05}
.stat .l{font-size:15px;color:var(--muted);margin-top:8px}

/* 服务流程 */
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px}
.step{
  counter-increment:s;background:#fff;border-radius:var(--radius);
  padding:28px 24px;box-shadow:var(--shadow-sm);border:1px solid rgba(0,0,0,.04);
}
.step::before{
  content:counter(s);display:flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:50%;background:var(--green);color:#fff;
  font-weight:600;font-size:16px;margin-bottom:14px;
}
.step h3{margin:0 0 6px;font-size:17px}
.step p{margin:0;font-size:15px;color:var(--muted)}

/* ==========================================================================
   电话 / 行动号召条
   ========================================================================== */
.callbar{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:18px;
  background:linear-gradient(135deg,var(--green) 0%,var(--green-700) 100%);
  color:#fff;border-radius:var(--radius);padding:26px 30px;margin:26px 0;
  box-shadow:0 14px 40px rgba(10,82,48,.24);
}
.callbar span{font-size:16px;color:rgba(255,255,255,.9)}
.callbar .num{
  font-size:clamp(24px,3vw,32px);font-weight:600;letter-spacing:-.03em;color:#fff;
  line-height:1.2;
}
.callbar .btn{background:#fff;color:var(--green-700)}
.callbar .btn:hover{background:#fff;color:var(--green-900);box-shadow:0 8px 22px rgba(0,0,0,.22)}
.callbar small{display:block;font-size:13px;font-weight:400;color:rgba(255,255,255,.7);margin-top:4px;letter-spacing:0}

/* 首页底部大 CTA */
.cta-band{
  background:linear-gradient(160deg,#1a8a52 0%,var(--green-700) 100%);
  color:#fff;text-align:center;padding:clamp(60px,8vw,96px) 22px;
}
.cta-band h2{color:#fff;font-size:clamp(28px,4vw,46px);letter-spacing:-.035em}
.cta-band p{color:rgba(255,255,255,.86);font-size:19px;max-width:560px;margin:16px auto 0}
.cta-band .hero-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:30px}

.note{
  font-size:14px;color:var(--green-700);background:var(--green-tint);
  border-radius:var(--radius-sm);padding:14px 18px;margin:20px 0;letter-spacing:-.01em;
}

/* ==========================================================================
   表格
   ========================================================================== */
.table-wrap{overflow-x:auto;border-radius:var(--radius);box-shadow:var(--shadow-sm);background:#fff;border:1px solid rgba(0,0,0,.04)}
table{width:100%;border-collapse:collapse;font-size:15px}
th,td{padding:15px 18px;text-align:left;border-bottom:1px solid var(--line-soft)}
th{background:var(--green-tint);color:var(--green-700);font-weight:600;font-size:14px;letter-spacing:-.01em}
tr:last-child td{border-bottom:0}
tr:hover td{background:rgba(21,127,74,.035)}

/* ==========================================================================
   FAQ
   ========================================================================== */
.faq-item{border-bottom:1px solid var(--line);padding:26px 2px}
.faq-item:first-of-type{border-top:1px solid var(--line)}
.faq-item h3{margin:0 0 8px;font-size:19px;letter-spacing:-.02em}
.faq-item p{margin:0;color:var(--muted);font-size:16px}

/* ==========================================================================
   表单
   ========================================================================== */
form.card{display:grid;gap:20px;padding:32px 28px}
form.card > p{margin:0}
form.card label{display:block;font-size:15px;font-weight:500;color:var(--ink);letter-spacing:-.01em}
input,textarea,select{
  width:100%;margin-top:9px;padding:13px 15px;font:inherit;font-size:16px;
  color:var(--ink);background:var(--gray);border:1px solid transparent;
  border-radius:var(--radius-sm);
  transition:border-color .25s var(--ease),background .25s var(--ease),box-shadow .25s var(--ease);
}
input:focus,textarea:focus,select:focus{
  outline:none;background:#fff;border-color:var(--green);
  box-shadow:0 0 0 4px rgba(21,127,74,.12);
}
textarea{resize:vertical;min-height:110px}
form.card .btn{justify-self:start}

/* ==========================================================================
   页脚
   ========================================================================== */
footer.site{
  background:var(--green-900);color:rgba(255,255,255,.62);
  padding:clamp(48px,6vw,68px) 22px 34px;font-size:13px;line-height:1.75;
  letter-spacing:-.005em;
}
.foot{
  max-width:var(--maxw);margin:0 auto;
  display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:34px;
  padding-bottom:30px;border-bottom:1px solid rgba(255,255,255,.1);
}
.foot > div{min-width:0}
.foot p{color:rgba(255,255,255,.62);font-size:13px;line-height:1.75;margin:0}
.foot strong{color:#fff;font-size:15px;font-weight:600;display:block;margin-bottom:12px;letter-spacing:-.02em}
.foot a{color:rgba(255,255,255,.68)}
.foot a:hover{color:#fff}
.foot .foot-links{display:flex;flex-direction:column;gap:7px}
.foot .foot-bottom{
  max-width:var(--maxw);margin:0 auto;padding-top:22px;
  display:flex;flex-wrap:wrap;gap:8px 20px;align-items:center;justify-content:space-between;
  font-size:12px;color:rgba(255,255,255,.45);
}
.foot .foot-bottom a{color:rgba(255,255,255,.55)}
.foot .foot-bottom a:hover{color:#fff}

/* ==========================================================================
   实拍图片
   ========================================================================== */
/* 网格画廊：统一裁切，标题浮在图片底部 */
.shots{
  display:grid;gap:16px;margin:28px 0;
  grid-template-columns:repeat(auto-fit,minmax(240px,1fr));
}
.shots--2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.shots--3{grid-template-columns:repeat(3,1fr)}
.shots .shot{
  position:relative;margin:0;overflow:hidden;
  border-radius:var(--radius-sm);background:var(--gray);
  box-shadow:var(--shadow-sm);
}
.shots .shot img{
  width:100%;height:100%;aspect-ratio:4/3;object-fit:cover;
  transition:transform .6s var(--ease);
}
.shots .shot:hover img{transform:scale(1.04)}
.shots .shot figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:30px 15px 12px;font-size:13.5px;line-height:1.4;color:#fff;
  background:linear-gradient(transparent,rgba(0,0,0,.66));
}

/* 正文配图：保留原始比例，不裁切 */
.shot{margin:26px 0}
.shot img{
  width:100%;height:auto;border-radius:var(--radius);
  box-shadow:var(--shadow-sm);background:var(--gray);
}
.shot figcaption{font-size:14px;color:var(--muted);margin-top:12px;line-height:1.5}

/* ==========================================================================
   滚动出现动效
   ========================================================================== */
/* 仅在 JS 可用时启用隐藏，避免脚本失效导致正文不可见 */
.js .reveal{opacity:0;transform:translateY(26px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.js .reveal.in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .reveal{opacity:1;transform:none;transition:none}
  .scroll-cue{animation:none}
  .btn:hover,.svc:hover{transform:none}
}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width:900px){
  .nav a{padding:6px 9px;font-size:12.5px}
}
@media (max-width:760px){
  body{font-size:16px}
  header.site{padding:0 18px}
  .nav{flex-wrap:wrap;gap:0}
  .nav .brand{order:0;margin-right:auto}
  .nav-toggle{display:block;order:1}
  .nav a{display:none}
  header.site.open{
    height:auto;padding-bottom:10px;
    background:rgba(255,255,255,.97);
    box-shadow:0 12px 30px rgba(0,0,0,.08);
  }
  header.site.open .nav{height:auto;min-height:var(--nav-h);align-items:center}
  header.site.open .nav a{
    display:block;order:2;flex:0 0 100%;
    font-size:16px;padding:13px 2px;
    border-top:1px solid var(--line-soft);border-radius:0;
    color:var(--ink);opacity:1;
  }
  header.site.open .nav a:hover{color:var(--green);background:transparent}
  .callbar{padding:22px;text-align:left}
  .callbar .btn{width:100%}
  .hero .hero-actions{flex-direction:column;width:100%}
  .hero .hero-actions .btn{width:100%}
  .cta-band .hero-actions{flex-direction:column}
  .cta-band .hero-actions .btn{width:100%}
  .feature{flex-direction:column;gap:12px}
  .shots{grid-template-columns:repeat(2,1fr);gap:12px}
  .shots .shot figcaption{font-size:12px;padding:22px 12px 10px}
  .shot img{border-radius:var(--radius-sm)}
  .container{padding-left:18px;padding-right:18px}
  .grid{gap:16px}
  .table-wrap{border-radius:var(--radius-sm)}
  th,td{padding:12px 14px;white-space:nowrap}
}