/* ============================================================
   人人装饰 官网 - 全局样式
   连云港本土改善型家装品牌
   ============================================================ */

:root{
  --orange:#e8540e;
  --orange-dark:#cf480a;
  --green:#5a9e2e;
  --green-dark:#4d8a27;
  --ink:#222;
  --ink-2:#444;
  --muted:#888;
  --line:#e6e6e6;
  --bg:#fff;
  --bg-soft:#f5f5f5;
  --bg-soft-2:#f0f0f0;
  --dark:#262626;
  --dark-2:#1f1f1f;
  --shadow:0 8px 30px rgba(0,0,0,.08);
  --shadow-sm:0 4px 16px rgba(0,0,0,.06);
  --wrap:1200px;
  --gutter:clamp(16px,4vw,40px);
  --sec-pad:clamp(48px,6vw,90px);
  --radius:6px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Helvetica Neue",Arial,sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
  font-size:15px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s}
ul{list-style:none}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding-left:var(--gutter);padding-right:var(--gutter)}

/* 大屏：容器与字号随分辨率放大（1080p / 2K / 4K） */
@media (min-width:1600px){:root{--wrap:1340px}}
@media (min-width:1920px){:root{--wrap:1480px} body{font-size:16px}}
@media (min-width:2560px){:root{--wrap:1720px} body{font-size:17px}}
@media (min-width:3200px){:root{--wrap:2040px} body{font-size:19px}}

/* English eyebrow label */
.eyebrow{
  font-family:"Arial Black",Arial,sans-serif;
  font-weight:800;
  letter-spacing:2px;
  color:var(--orange);
  font-size:13px;
  text-transform:uppercase;
  display:block;
  margin-bottom:10px;
}
.eyebrow.light{color:#ffae7d}

/* Section title with orange bar */
.sec-title{
  font-size:clamp(22px,2.4vw,32px);
  font-weight:800;
  color:var(--ink);
  letter-spacing:1px;
}
.bar-title{
  position:relative;
  padding-left:18px;
  margin-bottom:6px;
}
.bar-title::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:5px;height:1.1em;background:var(--orange);border-radius:2px;
}
.bar-eyebrow{
  font-family:"Arial Black",Arial,sans-serif;font-weight:800;letter-spacing:2px;
  font-size:clamp(18px,2vw,28px);color:var(--ink);text-transform:uppercase;line-height:1;
}
.bar-block{margin-bottom:36px}
.bar-block .sub{color:var(--muted);font-size:15px;margin-top:4px}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 26px;border-radius:4px;font-size:15px;font-weight:600;
  cursor:pointer;border:none;transition:all .25s;
}
.btn-orange{background:var(--orange);color:#fff}
.btn-orange:hover{background:var(--orange-dark)}
.btn-ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.6)}
.btn-ghost:hover{background:rgba(255,255,255,.12)}
.btn-line{background:#fff;color:var(--ink);border:1px solid var(--line)}
.btn-line:hover{border-color:var(--orange);color:var(--orange)}
.btn .arrow{font-family:Arial}
.btn:disabled{opacity:.6;cursor:not-allowed}

/* 表单提交反馈 */
.form-msg{display:none;margin-top:12px;font-size:13px;padding:10px 12px;border-radius:5px;line-height:1.5}
.form-msg.show{display:block}
.form-msg.ok{background:#eaf7e3;color:#3d7a1e;border:1px solid #bfe3aa}
.form-msg.err{background:#fdecea;color:#c0392b;border:1px solid #f5c6c0}

/* ============================================================
   顶部导航
   ============================================================ */
.topbar{
  position:sticky;top:0;z-index:100;
  background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow .25s;
}
.topbar.scrolled{box-shadow:0 6px 24px rgba(0,0,0,.08)}
.nav{display:flex;align-items:center;height:clamp(60px,5vw,76px);gap:clamp(16px,2.6vw,40px);position:relative}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo .mark{
  width:54px;height:44px;display:block;flex-shrink:0;
}
.logo .mark svg{width:100%;height:100%;display:block}
.logo:hover .mark{transform:translateY(-1px);transition:transform .2s}
.logo .txt b{display:block;font-size:18px;line-height:1.1;letter-spacing:1px}
.logo .txt span{font-size:9px;letter-spacing:2px;color:var(--muted);text-transform:uppercase}
.menu{display:flex;gap:30px;margin-left:10px}
.menu a{
  font-size:15px;color:var(--ink-2);font-weight:500;position:relative;padding:4px 0;
  display:flex;flex-direction:column;align-items:center;
}
.menu a small{font-size:9px;color:#bbb;letter-spacing:1px;text-transform:uppercase;margin-top:1px}
.menu a:hover,.menu a.active{color:var(--orange)}
.menu a.active::after{
  content:"";position:absolute;bottom:-26px;left:0;right:0;height:3px;background:var(--orange);
}
.nav-tel{margin-left:auto;text-align:right;flex-shrink:0}
.nav-tel small{display:block;font-size:11px;color:var(--muted)}
.nav-tel b{font-size:clamp(16px,1.6vw,21px);color:var(--orange);font-family:Arial,sans-serif;letter-spacing:.5px}
.menu .menu-tel{display:none}
/* 汉堡按钮 */
.nav-toggle{
  display:none;margin-left:auto;width:42px;height:42px;border:none;background:transparent;
  cursor:pointer;flex-direction:column;justify-content:center;gap:5px;padding:8px;flex-shrink:0;
}
.nav-toggle span{display:block;height:2.5px;width:100%;background:var(--ink);border-radius:2px;transition:transform .25s,opacity .2s}
.nav-toggle.open span:nth-child(1){transform:translateY(7.5px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg)}

/* ============================================================
   通用 内页 Hero
   ============================================================ */
.hero{position:relative;height:clamp(260px,32vw,420px);display:flex;align-items:center;color:#fff;overflow:hidden}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(0,0,0,.72),rgba(0,0,0,.35))}
.hero img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero .wrap{position:relative;z-index:2}
.hero h1{font-size:clamp(28px,4.2vw,50px);font-weight:800;letter-spacing:2px;margin:6px 0 14px}
.hero p{font-size:clamp(14px,1.3vw,17px);color:rgba(255,255,255,.85);max-width:620px}

/* 编号 tabs (内页hero下方步骤条) */
.steptabs{background:#fff;border-bottom:1px solid var(--line)}
.steptabs .wrap{display:flex;justify-content:space-between;gap:10px}
.steptabs .item{
  flex:1;padding:26px 14px;text-align:center;border-right:1px solid var(--line);position:relative;
}
.steptabs .item:last-child{border-right:none}
.steptabs .num{font-family:"Arial Black",Arial;font-size:26px;font-weight:800;color:#ddd;line-height:1}
.steptabs .item.on .num,.steptabs .item:hover .num{color:var(--orange)}
.steptabs .lbl{margin-top:8px;font-size:15px;color:var(--ink-2)}
.steptabs .item{cursor:pointer}
.steptabs .item.on .lbl{color:var(--ink);font-weight:600}

/* 步骤条说明面板 */
.step-panel{background:#fff;border-bottom:1px solid var(--line)}
.step-panel .wrap{display:flex;align-items:center;gap:26px;padding:26px 24px}
.step-panel .pnum{font-family:"Arial Black",Arial;font-size:50px;font-weight:800;color:var(--orange);line-height:1;flex-shrink:0;min-width:72px}
.step-panel .ptxt h4{font-size:20px;margin-bottom:6px}
.step-panel .ptxt p{color:var(--muted);font-size:15px;max-width:840px;line-height:1.75}
.step-panel.flash{animation:stepFade .35s ease}
@keyframes stepFade{from{opacity:.25;transform:translateY(4px)}to{opacity:1;transform:none}}

/* 案例筛选空状态 */
.case-empty{text-align:center;color:var(--muted);font-size:15px;background:#fff;border:1px dashed var(--line);border-radius:8px;padding:56px 20px}

/* ============================================================
   首页 Hero
   ============================================================ */
.home-hero{position:relative;color:#fff;overflow:hidden}
.home-hero>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.home-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(20,20,20,.85),rgba(20,20,20,.45))}
.home-hero .wrap{position:relative;z-index:2;display:flex;gap:clamp(24px,3vw,48px);padding-top:clamp(44px,5vw,76px);padding-bottom:clamp(44px,5vw,76px);align-items:flex-start}
.home-hero .htxt{flex:1;padding-top:14px}
.home-hero .htxt .tag{font-size:14px;color:#ffb78e;letter-spacing:3px;margin-bottom:16px}
.home-hero h1{font-size:clamp(26px,3.6vw,46px);font-weight:800;line-height:1.35;letter-spacing:1px}
.home-hero h1 .hl{color:var(--orange)}
.home-hero .lead{margin:22px 0 30px;color:rgba(255,255,255,.82);max-width:520px;font-size:15px}
.home-hero .hbtns{display:flex;gap:14px}

/* Hero 表单卡片 */
.lead-form{
  width:360px;flex-shrink:0;background:#fff;border-radius:8px;padding:28px;color:var(--ink);
  box-shadow:0 20px 50px rgba(0,0,0,.3);
}
.lead-form h3{font-size:20px;margin-bottom:4px}
.lead-form .fdesc{font-size:13px;color:var(--muted);margin-bottom:18px}
.lead-form .field{margin-bottom:12px}
.lead-form label{font-size:13px;color:var(--ink-2);display:block;margin-bottom:5px}
.lead-form input,.lead-form select,.lead-form textarea{
  width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:4px;font-size:14px;font-family:inherit;background:#fafafa;
}
.lead-form input:focus,.lead-form select:focus,.lead-form textarea:focus{outline:none;border-color:var(--orange);background:#fff}
.lead-form .quote{
  background:var(--bg-soft);border-radius:5px;padding:14px;margin:14px 0;display:flex;justify-content:space-between;align-items:center;
}
.lead-form .quote small{color:var(--muted);font-size:12px}
.lead-form .quote b{color:var(--orange);font-size:26px;font-family:Arial;font-weight:800}
.lead-form .btn{width:100%;justify-content:center}

/* ============================================================
   优势条 SINCE
   ============================================================ */
.since{background:var(--dark);color:#fff}
.since .wrap{display:flex;align-items:stretch}
.since .badge{
  background:var(--orange);padding:24px 30px;display:flex;flex-direction:column;justify-content:center;flex-shrink:0;
}
.since .badge small{font-size:12px;letter-spacing:2px;opacity:.9}
.since .badge b{font-family:"Arial Black",Arial;font-size:34px;line-height:1}
.since .feats{flex:1;display:flex}
.since .feat{
  flex:1;padding:22px 20px;border-right:1px solid rgba(255,255,255,.08);display:flex;gap:12px;align-items:flex-start;
}
.since .feat:last-child{border-right:none}
.since .feat .ic{color:var(--orange);font-size:20px;flex-shrink:0;margin-top:2px}
.since .feat b{display:block;font-size:15px;margin-bottom:3px}
.since .feat span{font-size:12px;color:rgba(255,255,255,.55);line-height:1.5}

/* ============================================================
   Section 通用
   ============================================================ */
.section{padding:var(--sec-pad) 0}
.section.soft{background:var(--bg-soft)}

/* 案例卡片网格 */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.case-card{
  background:#fff;border-radius:8px;overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .25s,box-shadow .25s;
}
.case-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.case-card .ph{height:215px;overflow:hidden}
.case-card .ph img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.case-card:hover .ph img{transform:scale(1.06)}
.case-card .body{padding:20px}
.case-card .ctag{
  display:inline-block;font-size:12px;color:var(--green);border:1px solid var(--green);
  padding:2px 10px;border-radius:3px;margin-bottom:12px;font-weight:600;
}
.case-card h3{font-size:18px;margin-bottom:8px}
.case-card .meta{font-size:13px;color:var(--muted)}
.center-btn{text-align:center;margin-top:44px}

/* ============================================================
   关于人人 (首页)
   ============================================================ */
.about-home{display:flex;gap:50px;align-items:center}
.about-home .pic{flex:1;border-radius:8px;overflow:hidden;box-shadow:var(--shadow)}
.about-home .info{flex:1}
.about-home .info p{color:var(--ink-2);margin:18px 0 24px;font-size:15px}
.tag-row{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px}
.tag-row .t{
  background:#fff;border:1px solid var(--line);padding:11px 20px;border-radius:4px;font-size:14px;font-weight:600;color:var(--ink-2);
}
.tag-row.bordered .t{border-left:3px solid var(--orange)}

/* ============================================================
   CTA 暗色条
   ============================================================ */
.cta{background:var(--dark);color:#fff;padding:40px 0}
.cta .wrap{display:flex;align-items:center;gap:20px}
.cta .ct{flex:1}
.cta .ct b{font-size:22px;display:block;margin-bottom:4px}
.cta .ct span{color:rgba(255,255,255,.6);font-size:14px}

/* ============================================================
   页脚
   ============================================================ */
.footer{background:var(--dark-2);color:#fff;padding:50px 0 30px}
.footer .top{display:flex;justify-content:space-between;align-items:flex-start;gap:20px;padding-bottom:28px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer .brand b{font-size:22px;letter-spacing:1px}
.footer .brand p{color:rgba(255,255,255,.5);font-size:13px;margin-top:8px}
.footer .menu-title{font-family:"Arial Black",Arial;color:var(--orange);font-size:13px;letter-spacing:2px;margin:26px 0 22px;text-transform:uppercase}
.fcols{display:grid;grid-template-columns:repeat(7,1fr);gap:20px}
.fcol h4{font-size:15px;margin-bottom:16px;font-weight:600}
.fcol a{display:block;color:rgba(255,255,255,.45);font-size:13px;margin-bottom:10px}
.fcol a:hover{color:var(--orange)}
.copyright{text-align:center;color:rgba(255,255,255,.3);font-size:12px;margin-top:30px;line-height:1.8}

/* ============================================================
   右侧悬浮工具条
   ============================================================ */
.sidebar{position:fixed;right:18px;bottom:90px;z-index:90;display:flex;flex-direction:column;gap:1px;
  background:#fff;border-radius:8px;box-shadow:var(--shadow);overflow:hidden;width:64px}
.sidebar a{
  display:flex;flex-direction:column;align-items:center;gap:3px;padding:12px 4px;font-size:11px;color:var(--ink-2);
  border-bottom:1px solid var(--line);transition:all .2s;
}
.sidebar a:last-child{border-bottom:none}
.sidebar a .si{font-size:18px;color:var(--orange)}
.sidebar a:hover{background:var(--orange);color:#fff}
.sidebar a:hover .si{color:#fff}

/* ============================================================
   服务/品质/设计 卡片块
   ============================================================ */
.svc-cards{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.svc-card{
  background:#fff;border:1px solid var(--line);border-top:3px solid var(--orange);border-radius:6px;padding:24px 20px;transition:all .25s;
}
.svc-card:hover{box-shadow:var(--shadow);transform:translateY(-4px)}
.svc-card h3{font-size:18px;margin-bottom:6px}
.svc-card .price{color:var(--orange);font-size:15px;font-weight:700;margin-bottom:14px}
.svc-card .price b{font-size:24px;font-family:Arial}
.svc-card ul li{font-size:13px;color:var(--muted);padding-left:14px;position:relative;margin-bottom:7px;line-height:1.5}
.svc-card ul li::before{content:"";position:absolute;left:0;top:9px;width:5px;height:5px;border-radius:50%;background:var(--orange)}

/* 特性 grid (品质 / 设计 / 售后) */
.feat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.feat-grid.c4{grid-template-columns:repeat(4,1fr)}
.feat-item{
  background:#fff;border:1px solid var(--line);border-radius:6px;padding:24px;transition:all .2s;
}
.feat-item:hover{box-shadow:var(--shadow-sm)}
.feat-item .ico{font-size:24px;color:var(--green);margin-bottom:12px}
.feat-item.orange .ico{color:var(--orange)}
.feat-item h4{font-size:16px;margin-bottom:8px}
.feat-item p{font-size:13px;color:var(--muted);line-height:1.6}

/* 两栏 split */
.split{display:flex;gap:50px;align-items:center}
.split .col{flex:1}
.split .pic{border-radius:8px;overflow:hidden;box-shadow:var(--shadow)}
.split p.desc{color:var(--ink-2);margin:16px 0 26px}

/* 暗色信息卡 (品质 左) */
.dark-card{background:var(--dark);color:#fff;border-radius:8px;padding:38px}
.dark-card h3{font-size:26px;line-height:1.5;margin-bottom:18px}
.dark-card p{color:rgba(255,255,255,.6);font-size:14px;margin-bottom:26px}
.stats{display:flex;gap:14px}
.stats .s{background:rgba(255,255,255,.06);border-radius:6px;padding:16px;flex:1;text-align:center}
.stats .s b{display:block;font-size:26px;color:var(--orange);font-family:Arial;font-weight:800}
.stats .s span{font-size:12px;color:rgba(255,255,255,.6)}

/* ============================================================
   流程图 FLOW
   ============================================================ */
.flow{background:var(--dark);color:#fff;padding:var(--sec-pad) 0}
.flow .bar-eyebrow,.flow .bar-title .num{color:#fff}
.flow-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:40px}
.flow-step{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);border-radius:8px;padding:26px;position:relative}
.flow-step .n{font-family:"Arial Black",Arial;font-size:40px;color:rgba(232,84,14,.35);line-height:1;position:absolute;right:20px;top:14px}
.flow-step .badge{display:inline-flex;width:42px;height:42px;border-radius:50%;background:var(--orange);align-items:center;justify-content:center;font-weight:800;margin-bottom:14px}
.flow-step h4{font-size:18px;margin-bottom:8px}
.flow-step p{font-size:13px;color:rgba(255,255,255,.55);line-height:1.6}

/* ============================================================
   设计师
   ============================================================ */
.designers{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.designer{background:#fff;border-radius:8px;overflow:hidden;box-shadow:var(--shadow-sm)}
.designer .ph{height:240px;overflow:hidden}
.designer .ph img{width:100%;height:100%;object-fit:cover}
.designer .body{padding:22px}
.designer .exp{font-size:12px;color:var(--orange);font-weight:700;margin-bottom:6px}
.designer h3{font-size:20px;margin-bottom:4px}
.designer .role{font-size:13px;color:var(--muted);margin-bottom:12px}
.designer .bio{font-size:13px;color:var(--ink-2);margin-bottom:16px;line-height:1.6}
.designer .works a{display:flex;justify-content:space-between;font-size:13px;color:var(--ink-2);padding:9px 0;border-top:1px solid var(--line)}
.designer .works a:hover{color:var(--orange)}
.designer .works a .arrow{color:var(--orange)}

/* ============================================================
   时间轴 MILESTONE
   ============================================================ */
.timeline{display:flex;justify-content:space-between;position:relative;margin-top:50px}
.timeline::before{content:"";position:absolute;top:6px;left:0;right:0;height:2px;background:var(--line)}
.tl-item{flex:1;text-align:center;position:relative;padding:0 8px}
.tl-item .dot{width:14px;height:14px;border-radius:50%;background:var(--orange);margin:0 auto 18px;position:relative;z-index:2}
.tl-item .yr{font-family:"Arial Black",Arial;font-size:24px;color:var(--orange);margin-bottom:8px}
.tl-item p{font-size:13px;color:var(--ink-2)}

/* ============================================================
   案例库 筛选
   ============================================================ */
.filter-bar{background:#fff;border:1px solid var(--line);border-radius:8px;padding:8px 20px;margin-bottom:14px}
.filter-row{display:flex;align-items:center;gap:14px;padding:13px 0;border-bottom:1px solid var(--line)}
.filter-row:last-child{border-bottom:none}
.filter-row .k{font-size:14px;color:var(--ink);font-weight:600;width:56px;flex-shrink:0}
.filter-row .opts{display:flex;flex-wrap:wrap;gap:8px}
.filter-row .opts a{font-size:14px;color:var(--ink-2);padding:5px 16px;border-radius:4px}
.filter-row .opts a.on,.filter-row .opts a:hover{background:var(--orange);color:#fff}
.result-bar{display:flex;justify-content:space-between;align-items:center;margin:24px 0;font-size:14px;color:var(--muted)}
.result-bar b{color:var(--orange);font-family:Arial}

/* ============================================================
   案例详情
   ============================================================ */
.detail-top{display:flex;gap:36px;margin-top:-70px;position:relative;z-index:5}
.detail-main{flex:1}
.detail-main>.bigpic{border-radius:8px;overflow:hidden;box-shadow:var(--shadow)}
.detail-side{width:320px;flex-shrink:0}
.info-card{background:#fff;border-radius:8px;box-shadow:var(--shadow);padding:26px}
.info-card h3{font-size:18px;margin-bottom:18px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.info-card .row{display:flex;justify-content:space-between;padding:9px 0;font-size:14px}
.info-card .row span{color:var(--muted)}
.info-card .row b{color:var(--ink)}
.info-card .btn{width:100%;justify-content:center;margin-top:20px}
.detail-desc{margin-top:40px}
.detail-desc h3,.album h3{font-size:22px;margin-bottom:14px}
.detail-desc p{color:var(--ink-2);margin-bottom:18px}
.chip-row{display:flex;flex-wrap:wrap;gap:10px}
.chip{font-size:13px;color:var(--green);background:rgba(90,158,46,.08);border:1px solid rgba(90,158,46,.3);padding:5px 14px;border-radius:4px}
.album{margin-top:46px}
.album-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.album-grid img{border-radius:6px;height:220px;width:100%;object-fit:cover}

/* ============================================================
   联系
   ============================================================ */
.contact-split{display:flex;gap:40px}
.contact-info{flex:1}
.contact-info .pic{border-radius:8px;overflow:hidden;margin-bottom:24px;box-shadow:var(--shadow-sm)}
.contact-info p{color:var(--ink-2);margin-bottom:24px}
.info-list .li{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line)}
.info-list .li .ic{width:42px;height:42px;border-radius:6px;background:var(--bg-soft);color:var(--orange);display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0}
.info-list .li b{display:block;font-size:15px}
.info-list .li span{font-size:13px;color:var(--muted)}
.contact-form{width:420px;flex-shrink:0;background:var(--bg-soft);border-radius:8px;padding:32px;align-self:flex-start}
.contact-form h3{font-size:20px;margin-bottom:18px}
.contact-form .field{margin-bottom:14px}
.contact-form label{font-size:13px;color:var(--ink-2);display:block;margin-bottom:6px}
.contact-form input,.contact-form select,.contact-form textarea{
  width:100%;padding:12px;border:1px solid var(--line);border-radius:4px;font-family:inherit;font-size:14px;background:#fff;
}
.contact-form textarea{resize:vertical;min-height:90px}
.contact-form .btn{width:100%;justify-content:center;margin-top:6px}

/* WeChat 聊天展示 (品质见证) */
.witness{display:flex;gap:40px;align-items:center}
.chat-wrap{flex:1;display:flex;gap:18px;justify-content:center}
.phone{width:230px;background:#ededed;border-radius:24px;padding:14px 10px;box-shadow:var(--shadow)}
.phone .bar{text-align:center;font-size:12px;color:#666;margin-bottom:10px}
.bubble{max-width:80%;padding:9px 12px;border-radius:8px;font-size:12px;margin-bottom:10px;line-height:1.5}
.bubble.them{background:#fff}
.bubble.me{background:#95ec69;margin-left:auto}

/* 工地展示 tag */
.case-card .ctag.work{color:var(--orange);border-color:var(--orange)}

/* ============================================================
   返回顶部 FAB（移动端）
   ============================================================ */
#toTop{
  position:fixed;right:16px;bottom:20px;z-index:95;width:46px;height:46px;border-radius:50%;
  border:none;background:var(--orange);color:#fff;font-size:20px;cursor:pointer;display:none;
  align-items:center;justify-content:center;box-shadow:0 6px 18px rgba(232,84,14,.4);
  opacity:0;transform:translateY(10px);transition:opacity .25s,transform .25s;
}
#toTop svg{width:22px;height:22px}
#toTop.show{opacity:1;transform:none}

/* ============================================================
   响应式断点
   ============================================================ */

/* 中大屏：网格列数收敛 */
@media (max-width:1180px){
  .fcols{grid-template-columns:repeat(4,1fr);row-gap:28px}
  .svc-cards{grid-template-columns:repeat(3,1fr)}
}

/* 平板横向 / 小笔记本 */
@media (max-width:992px){
  .case-grid,.designers,.flow-steps{grid-template-columns:repeat(2,1fr)}
  .album-grid{grid-template-columns:repeat(2,1fr)}
  .since .feats{flex-wrap:wrap}
  .since .feat{flex:1 1 33%}
}

/* —— 移动 / 平板竖向：启用汉堡菜单 —— */
@media (max-width:860px){
  .nav-toggle{display:flex}
  .nav-tel{display:none}
  .menu{
    position:absolute;top:100%;left:0;right:0;margin:0;background:#fff;
    flex-direction:column;gap:0;align-items:stretch;
    border-bottom:1px solid var(--line);box-shadow:0 12px 24px rgba(0,0,0,.08);
    max-height:0;overflow:hidden;transition:max-height .3s ease;
  }
  .menu.open{max-height:560px}
  .menu a{
    flex-direction:row;justify-content:space-between;padding:15px 24px;
    border-bottom:1px solid var(--line);font-size:16px;
  }
  .menu a small{margin-top:0;font-size:10px}
  .menu a.active::after{display:none}
  .menu a.active{background:#fff7f2}
  .menu .menu-tel{display:flex;align-items:center;gap:8px;color:var(--orange);font-weight:700;justify-content:center;font-size:17px}
  .menu .menu-tel svg{width:18px;height:18px}

  .home-hero .wrap,.about-home,.split,.witness,.contact-split,.detail-top{flex-direction:column;gap:32px}
  .home-hero .htxt{padding-top:0}
  .lead-form,.detail-side,.contact-form{width:100%}
  .split .col[style]{flex:1 1 auto !important}
  .dark-card{padding:28px}

  .feat-grid.c4{grid-template-columns:repeat(2,1fr)}
  .svc-cards{grid-template-columns:repeat(2,1fr)}
  .fcols{grid-template-columns:repeat(3,1fr)}

  .since .wrap{flex-direction:column;align-items:stretch}
  .since .badge{flex-direction:row;gap:12px;align-items:center;justify-content:center;padding:16px}
  .since .badge b{font-size:26px}

  .cta .wrap{flex-direction:column;align-items:flex-start;gap:16px}

  .timeline{flex-wrap:wrap;gap:28px 0}
  .tl-item{flex:1 1 33%}
  .timeline::before{display:none}

  .detail-top{margin-top:28px}
  .sidebar{display:none}
  #toTop{display:flex}

  /* 步骤条横向滚动，避免 5 列拥挤 */
  .steptabs .wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none}
  .steptabs .wrap::-webkit-scrollbar{display:none}
  .steptabs .item{min-width:128px;padding:18px 10px}
  .step-panel .wrap{padding:22px 20px;gap:18px}

  /* 筛选行换行 */
  .filter-row{flex-wrap:wrap;align-items:flex-start}
}

/* 手机 */
@media (max-width:560px){
  .case-grid,.designers,.feat-grid,.feat-grid.c4,.svc-cards,.album-grid,.flow-steps{grid-template-columns:1fr}
  .fcols{grid-template-columns:repeat(2,1fr);gap:8px 16px}
  .since .feat{flex:1 1 100%}
  .timeline .tl-item{flex:1 1 50%}
  .chat-wrap{flex-direction:column;align-items:center;gap:16px}
  .phone{width:min(86vw,300px)}
  .home-hero .hbtns{flex-direction:column}
  .home-hero .hbtns .btn{width:100%;justify-content:center}
  .lead-form,.contact-form{padding:22px}
  .step-panel .wrap{flex-direction:column;align-items:flex-start;gap:8px}
  .step-panel .pnum{font-size:38px;min-width:0}
  .detail-side .info-card{padding:22px}
  .filter-row .k{width:auto}
  .btn{padding:12px 22px}
  .center-btn .btn{width:100%;justify-content:center}
}

/* 超小屏 */
@media (max-width:380px){
  .logo .txt b{font-size:16px}
  .nav{gap:10px}
  .fcols{grid-template-columns:1fr}
}

/* 触屏：去除悬停位移，避免“粘连” */
@media (hover:none){
  .case-card:hover,.svc-card:hover,.designer:hover{transform:none}
  .case-card:hover .ph img{transform:none}
}