/* ============================================================
 * 政企 B 端专业报价单 · 样式
 * 沿用首页暖米白+墨色+哑光金 + 衬线大标题的高级中文风
 * ============================================================ */
:root{
  /* 顶栏与内容区（main max-width:1480 / padding 18px）对齐 */
  --nav-w:1480px; --nav-px:18px;
  --bg:#FAF8F5;
  --paper:#FFFFFF;
  --ink:#26241F;
  --ink2:#4A4640;
  --sub:#7A766F;
  --line:#E8E2D6;
  --gold:#A5854F;
  --gold2:#C9A876;
  --gold-bg:#F4ECDC;
  --red:#9A3B1F;
  --green:#3B6E48;
  --shadow:0 4px 24px rgba(60,40,20,.06);
  --shadow-lg:0 10px 38px rgba(60,40,20,.10);
  --serif:"Source Han Serif SC","Noto Serif SC","Songti SC","SimSun",serif;
  --sans:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html{font-size:15px}
body{font-family:var(--sans);background:var(--bg);color:var(--ink);line-height:1.65;-webkit-font-smoothing:antialiased}
button{font-family:inherit}

/* ===== Header ===== */
header{background:var(--paper);border-bottom:1.5px solid var(--line);box-shadow:var(--shadow)}
.hwrap{max-width:1480px;margin:0 auto;padding:14px 18px;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.logo{width:38px;height:38px;border-radius:10px;background:var(--ink);display:flex;align-items:center;justify-content:center;flex:none;font-family:"Source Han Serif SC","Noto Serif SC","Songti SC","SimSun",serif;font-weight:700;font-size:1.05rem;color:#E9DFC9;line-height:1;text-decoration:none}
.htitle{min-width:0}
.htitle h1{font-family:var(--serif);font-size:1.32rem;font-weight:700;letter-spacing:2px;color:var(--ink)}
.htitle p{font-size:.74rem;color:var(--sub);margin-top:3px;letter-spacing:.8px}
.nav-r{margin-left:auto;display:flex;gap:10px;flex-wrap:wrap}
.nav-link{display:inline-flex;align-items:center;background:var(--gold-bg);color:var(--gold);border:1px solid var(--gold);border-radius:999px;padding:7px 16px;font-size:.82rem;font-weight:600;text-decoration:none;transition:.18s}
.nav-link:hover{background:var(--gold);color:#fff}

/* ===== Hero：全屏影像开场（与品牌页同源设计语言） ===== */
html{scroll-behavior:smooth}
.b2b-hero{position:relative;min-height:100vh;min-height:100svh;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;color:#F5F1E8;overflow:hidden;background:#1D1B16}
.b2b-hero .hero-bg{position:absolute;inset:0;background:url("hero-b2b.jpg") center 42%/cover no-repeat;animation:heroZoom 26s ease-in-out infinite alternate}
@keyframes heroZoom{from{transform:scale(1.02)}to{transform:scale(1.12)}}
@media (prefers-reduced-motion:reduce){.b2b-hero .hero-bg{animation:none}}
.b2b-hero .hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(20,18,14,.6) 0%,rgba(20,18,14,.34) 34%,rgba(20,18,14,.72) 74%,rgba(20,18,14,.97) 100%)}
.b2b-hero .hero-in{position:relative;z-index:2;padding:120px 24px 10px;max-width:880px;width:100%}
.b2b-hero .eyebrow{display:inline-flex;align-items:center;gap:12px;font-size:.7rem;letter-spacing:5px;color:#D8C69A;text-transform:uppercase;font-weight:500}
.b2b-hero .eyebrow::before,.b2b-hero .eyebrow::after{content:"";width:34px;height:1px;background:rgba(216,198,154,.55)}
.b2b-hero h1{font-family:var(--serif);font-size:clamp(2.1rem,5vw,3.6rem);font-weight:700;letter-spacing:6px;line-height:1.32;margin:20px 0 16px;text-shadow:0 4px 34px rgba(0,0,0,.4)}
.b2b-hero h1 em{font-style:normal;color:#E2C583}
.b2b-hero .lead{max-width:640px;margin:0 auto;font-size:clamp(.88rem,1.6vw,1rem);color:rgba(245,241,232,.86);line-height:2}
.hero-cta{margin-top:30px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.btn-h{display:inline-flex;align-items:center;gap:8px;border-radius:999px;padding:12px 30px;font-size:.88rem;font-weight:600;letter-spacing:2px;transition:.25s;white-space:nowrap;text-decoration:none}
.btn-h.gold{background:linear-gradient(135deg,#B99553,#A5854F);color:#fff}
.btn-h.gold:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(165,133,79,.45)}
.btn-h.ghost{border:1px solid rgba(233,223,201,.5);color:#F5F1E8;background:rgba(29,27,22,.32);backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px)}
.btn-h.ghost:hover{background:rgba(29,27,22,.6);border-color:rgba(233,223,201,.85)}
.b2b-hero .scroll-hint{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);z-index:2;width:22px;height:36px;border:1.5px solid rgba(233,223,201,.45);border-radius:12px;display:flex;justify-content:center;padding-top:7px}
.b2b-hero .scroll-hint i{width:3px;height:7px;border-radius:2px;background:#D8C69A;animation:hintDrop 1.8s ease-in-out infinite}
@keyframes hintDrop{0%,100%{transform:translateY(0);opacity:1}55%{transform:translateY(9px);opacity:.3}}
@media (prefers-reduced-motion:reduce){.b2b-hero .scroll-hint i{animation:none}}
.b2b-hero .hero-band{position:relative;z-index:2;width:100%;border-top:1px solid rgba(233,223,201,.18);margin-top:auto;background:linear-gradient(180deg,rgba(20,18,14,0),rgba(20,18,14,.5))}
.b2b-hero .hero-band .wrap{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;padding:22px 24px 30px;max-width:900px;margin:0 auto}
.b2b-hero .hstat{text-align:center}
.b2b-hero .hstat .v{font-family:var(--serif);font-size:clamp(1.3rem,2.4vw,1.8rem);font-weight:700;color:#E2C583;letter-spacing:1px}
.b2b-hero .hstat .l{font-size:.72rem;color:rgba(245,241,232,.62);margin-top:4px;letter-spacing:2px}
/* 渐显 */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .8s cubic-bezier(.22,.61,.36,1),transform .8s cubic-bezier(.22,.61,.36,1)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.08s}.reveal.d2{transition-delay:.16s}.reveal.d3{transition-delay:.24s}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

/* ===== 布局 ===== */
main{max-width:1480px;margin:0 auto;padding:24px 18px 40px;display:grid;grid-template-columns:minmax(0,1fr) 440px;gap:20px;align-items:start}

/* ===== Cards（进阶质感） ===== */
.card{background:var(--paper);border-radius:14px;box-shadow:var(--shadow);padding:20px;margin-bottom:18px;border:1px solid var(--line);transition:box-shadow .3s ease}
.card:hover{box-shadow:0 10px 30px rgba(60,40,20,.11)}
.card h2{font-family:var(--serif);font-size:1.08rem;font-weight:700;color:var(--ink);display:flex;align-items:center;gap:10px;margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid var(--line)}
.card h2 .num{font-family:var(--serif);width:28px;height:28px;border-radius:6px;background:var(--gold-bg);color:var(--gold);font-size:.95rem;display:inline-flex;align-items:center;justify-content:center;flex:none}
.form-col>.card{animation:cardIn .55s ease both}
.form-col>.card:nth-child(2){animation-delay:.08s}
.form-col>.card:nth-child(3){animation-delay:.16s}
.form-col>.card:nth-child(4){animation-delay:.24s}
.form-col>.card:nth-child(5){animation-delay:.32s}
@keyframes cardIn{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){.form-col>.card{animation:none}}
/* 卡内输入聚焦联动：聚焦时标签描金 */
.grid2 label:focus-within{color:var(--gold)}
.hint{font-size:.74rem;color:var(--sub);font-weight:400;margin-left:auto}

/* ===== Form ===== */
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:11px 14px}
.grid2 label{display:flex;flex-direction:column;font-size:.78rem;color:var(--ink2);font-weight:600;gap:5px}
.grid2 label.full{grid-column:1/-1}
.grid2 input,.grid2 select,.grid2 textarea{font-family:inherit;font-size:.85rem;color:var(--ink);border:1.2px solid var(--line);border-radius:8px;padding:8px 11px;background:#FCFBF8;outline:none;transition:.15s}
.grid2 input:focus,.grid2 select:focus,.grid2 textarea:focus{border-color:var(--gold);background:#fff;box-shadow:0 0 0 3px rgba(165,133,79,.12)}
.grid2 textarea{resize:vertical}

/* ===== Vehicle Lines ===== */
#lineList{display:flex;flex-direction:column;gap:11px;margin-bottom:10px}
.line-card{border:1.2px solid var(--line);border-radius:10px;padding:12px;background:#FCFBF8;position:relative}
.line-card .line-num{position:absolute;top:-9px;left:12px;background:var(--gold);color:#fff;font-size:.68rem;font-weight:700;border-radius:6px;padding:1px 8px;letter-spacing:.5px}
.line-card .line-grid{display:grid;grid-template-columns:2fr 1.3fr .8fr 1.1fr 36px;gap:8px}
.line-card .line-grid label{display:flex;flex-direction:column;font-size:.7rem;color:var(--ink2);font-weight:600;gap:4px}
.line-card .line-grid .lbl{display:flex;align-items:center;gap:6px}
.line-card .line-grid .lbl .lbl-sub{font-size:.62rem;color:#b5b0a6;font-weight:400}
.line-card .line-grid input,.line-card .line-grid select{font-family:inherit;font-size:.82rem;border:1.2px solid var(--line);border-radius:7px;padding:6px 9px;background:#fff;outline:none}
.line-card .line-grid input:focus,.line-card .line-grid select:focus{border-color:var(--gold)}
.line-card .pick-trigger{cursor:pointer;background:#fff;display:flex;align-items:center;justify-content:space-between;overflow:hidden;border:1.2px dashed transparent;transition:.15s}
.line-card .pick-trigger:hover{border-color:var(--gold)}
.line-card .pick-trigger .pname{color:var(--ink);font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1;min-width:0}
.line-card .pick-trigger .pname.placeholder{color:#b5b0a6;font-weight:400}
.line-card .line-del{background:none;border:none;color:var(--sub);cursor:pointer;font-size:1.05rem;border-radius:7px;align-self:flex-end;transition:.15s;padding:6px 0}
.line-card .line-del:hover{background:#fbe9e6;color:var(--red)}
.line-card .line-foot{display:flex;justify-content:space-between;align-items:baseline;margin-top:9px;padding-top:8px;border-top:1px dashed var(--line);font-size:.72rem;color:var(--sub)}
.line-card .line-foot .lf-sub b{font-family:var(--serif);color:var(--red);font-size:.92rem;margin-left:6px}
.line-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.btn-add{background:var(--gold-bg);color:var(--gold);border:1.2px dashed var(--gold);border-radius:8px;padding:8px 14px;font-size:.82rem;font-weight:600;cursor:pointer;transition:.15s}
.btn-add:hover{background:var(--gold);color:#fff;border-style:solid}

/* ===== Buttons ===== */
.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:8px}
.btn-primary{background:var(--ink);color:#fff;border:none;border-radius:9px;padding:11px 22px;font-size:.88rem;font-weight:600;cursor:pointer;transition:.18s;letter-spacing:.5px}
.btn-primary:hover{background:var(--gold);transform:translateY(-1px);box-shadow:var(--shadow)}
.btn-primary:disabled{background:#d6cfc2;cursor:not-allowed;transform:none;box-shadow:none}
.btn-secondary{background:transparent;color:var(--ink2);border:1.2px solid var(--line);border-radius:9px;padding:11px 22px;font-size:.88rem;font-weight:600;cursor:pointer;transition:.15s}
.btn-secondary:hover{border-color:var(--sub);color:var(--ink)}

/* ===== Summary（金墨质感汇总） ===== */
.summary-col{position:sticky;top:18px}
.summary-col .sticky{position:sticky;top:14px;border-top:3px solid var(--gold)}
.sum-row{display:flex;justify-content:space-between;align-items:baseline;padding:9px 0;border-bottom:1px dashed var(--line);font-size:.84rem;color:var(--ink2)}
.sum-row:last-child{border-bottom:none}
.sum-row b{font-family:var(--serif);font-weight:700;color:var(--ink);font-size:1.05rem;font-variant-numeric:tabular-nums}
.sum-row.big{padding:13px 0;margin-top:4px;border-top:1.5px solid var(--ink);border-bottom:1.5px solid var(--ink)}
.sum-row.big b{color:var(--red);font-size:1.5rem}
.sum-row.big b.tick{animation:sumPulse .45s ease}
@keyframes sumPulse{0%{transform:scale(1)}40%{transform:scale(1.05)}100%{transform:scale(1)}}
.sum-row.small{font-size:.74rem;color:var(--sub)}
.sum-row.small span{color:var(--sub)}
/* 汇总主按钮（描金） */
.summary-col .btn-primary{background:var(--ink);color:var(--gold2);font-family:var(--serif);letter-spacing:2px;border-radius:10px;padding:13px;box-shadow:0 4px 14px rgba(38,36,31,.3);width:100%;margin-top:14px}
.summary-col .btn-primary:hover:not(:disabled){background:var(--gold);color:#fff;transform:translateY(-1px);box-shadow:0 8px 22px rgba(165,133,79,.4)}
.summary-col .btn-primary:disabled{opacity:.5;cursor:not-allowed;background:var(--ink);color:var(--gold2);transform:none;box-shadow:none}

/* ===== Preview ===== */
.preview-box{background:#F1ECE2;border:1px solid var(--line);border-radius:10px;padding:8px;display:flex;align-items:center;justify-content:center;min-height:280px;position:relative;overflow:hidden}
.preview-box canvas{width:100%;height:auto;border-radius:6px;background:#fff;display:block;box-shadow:0 4px 14px rgba(0,0,0,.1)}
.preview-empty{color:var(--sub);font-size:.84rem;text-align:center;padding:30px 10px}
.preview-actions{display:flex;gap:10px;align-items:center;margin-top:10px;flex-wrap:wrap}

/* ===== Picker Mask ===== */
.picker-mask,.quote-preview{position:fixed;inset:0;background:rgba(20,16,10,.55);z-index:150;display:none;align-items:center;justify-content:center;backdrop-filter:blur(3px)}
.picker-mask.on,.quote-preview.on{display:flex}
.picker-box,.qp-box{background:#fff;border-radius:14px;box-shadow:var(--shadow-lg);width:min(720px,92vw);max-height:80vh;overflow:hidden;display:flex;flex-direction:column}
.qp-box{width:min(880px,94vw)}
.picker-head,.qp-head{padding:14px 18px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-family:var(--serif);font-weight:700;font-size:1rem;color:var(--ink)}
.qp-close{background:none;border:none;font-size:1.3rem;color:var(--sub);cursor:pointer;padding:2px 8px;border-radius:6px;transition:.15s}
.qp-close:hover{background:var(--gold-bg);color:var(--gold)}
.picker-body{padding:16px 18px;overflow-y:auto;max-height:65vh}
.picker-series{margin-bottom:18px}
.picker-series:last-child{margin-bottom:4px}
.picker-series .ps-head{display:flex;align-items:center;gap:13px;padding-bottom:11px;border-bottom:1px dashed var(--line);margin-bottom:10px}
.picker-series .ps-img{width:104px;height:66px;object-fit:cover;border-radius:9px;flex:none;background:#F1ECE2;box-shadow:0 3px 10px rgba(60,40,20,.12)}
.picker-series .ps-img.ph{display:inline-block;background:linear-gradient(135deg,#E8E2D6,#D8CFB8)}
.picker-series .ps-name{font-family:var(--serif);font-weight:700;color:var(--ink);font-size:1.02rem;display:flex;align-items:center;gap:8px}
.picker-series .ps-tag{font-size:.64rem;background:var(--gold-bg);color:var(--gold);padding:2px 8px;border-radius:4px;font-weight:700;letter-spacing:.5px}
.picker-series .ps-tag.phev{background:#EAF3EC;color:#3B6E48}
.picker-series .ps-sub{font-size:.74rem;color:var(--sub);margin-top:3px}
.picker-trims{display:grid;grid-template-columns:repeat(auto-fill,minmax(206px,1fr));gap:9px}
.picker-trim{border:1.2px solid var(--line);border-radius:10px;padding:11px 13px;cursor:pointer;background:#FCFBF8;transition:.16s;display:flex;flex-direction:column;gap:4px;text-align:left;font-family:inherit}
.picker-trim:hover{border-color:var(--gold);background:var(--gold-bg);transform:translateY(-2px);box-shadow:0 6px 16px rgba(165,133,79,.18)}
.picker-trim .pt-name{font-size:.8rem;font-weight:700;color:var(--ink);line-height:1.4}
.picker-trim .pt-meta{font-size:.7rem;color:var(--ink2)}
.picker-trim .pt-meta2{font-size:.66rem;color:var(--sub)}
.picker-trim .pt-price{font-size:.78rem;color:var(--red);font-weight:700;margin-top:3px;display:flex;align-items:center;justify-content:space-between}
.picker-trim .pt-price i{font-style:normal;font-size:.64rem;color:var(--gold);font-weight:600;opacity:0;transition:.16s}
.picker-trim:hover .pt-price i{opacity:1}

/* ===== Quote Preview ===== */
.qp-body{padding:14px 18px;display:flex;justify-content:center;background:#F1ECE2;overflow:auto;max-height:65vh}
.qp-body img{max-width:100%;height:auto;border-radius:8px;background:#fff;box-shadow:0 6px 24px rgba(0,0,0,.18);margin:0 auto;-webkit-touch-callout:default;-webkit-user-select:auto;user-select:auto}
.qp-foot{padding:12px 18px;border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap}
.qp-btns{display:flex;gap:9px;flex-wrap:wrap}
.qp-save,.qp-print{border:none;border-radius:8px;padding:8px 18px;font-size:.84rem;font-weight:600;cursor:pointer;transition:.18s}
.qp-save{background:var(--ink);color:#fff}
.qp-save:hover{background:var(--gold)}
.qp-print{background:#fff;color:var(--ink2);border:1.2px solid var(--line)}
.qp-print:hover{border-color:var(--gold);color:var(--gold)}

/* ===== Footer ===== */
footer{margin-top:30px;padding:18px;text-align:center;border-top:1px solid var(--line);background:var(--paper)}
.maker{display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap}
.foot-tab{display:inline-flex;align-items:center;background:#fff;color:var(--ink2);border:1px solid var(--line);border-radius:999px;padding:7px 16px;font-size:.78rem;font-weight:600;text-decoration:none;transition:.18s}
.foot-tab:hover{border-color:var(--gold);color:var(--gold);transform:translateY(-1px)}
.badge-maker{display:inline-flex;align-items:center;gap:7px;background:var(--ink);color:#fff;border-radius:999px;padding:7px 18px;font-size:.84rem;font-weight:700;letter-spacing:1px}
.badge-maker .dot{width:6px;height:6px;border-radius:50%;background:var(--gold)}

/* ===== Responsive ===== */
@media (max-width: 1100px){
  main{grid-template-columns:minmax(0,1fr)}
  .summary-col{position:static}
  .summary-col .sticky{position:static}
}
@media (max-width: 640px){
  html{font-size:14px}
  .b2b-hero .hero-in{padding:96px 18px 6px}
  .b2b-hero h1{letter-spacing:3px}
  .hero-cta .btn-h{padding:11px 22px;font-size:.82rem}
  .b2b-hero .hero-band .wrap{grid-template-columns:repeat(3,1fr);gap:8px;padding:16px 12px 22px}
  .b2b-hero .hstat .l{font-size:.62rem;letter-spacing:1px}
  main{padding:16px 12px 40px}
  .grid2{grid-template-columns:1fr}
  .line-card .line-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .line-card .line-grid input,.line-card .line-grid select{width:100%;min-width:0}
  .line-card{min-width:0;max-width:100%}
  .hwrap{gap:8px}
  .htitle h1{font-size:1.1rem}
  .nav-r{margin-left:0;width:100%}
  .actions .btn-primary,.actions .btn-secondary{flex:1;min-width:0;text-align:center}
}

/* ===== 移动端汉堡菜单 ===== */
.nav-toggle{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;flex:none;margin-left:auto}
.nav-toggle span{width:18px;height:2px;background:var(--ink);border-radius:2px;transition:.25s}
.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)}
.mobile-menu{display:none;position:fixed;left:0;right:0;z-index:59;background:rgba(250,248,245,.98);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1.5px solid var(--line);box-shadow:0 12px 30px rgba(38,36,31,.14);padding:10px 18px 16px;flex-direction:column}
.mobile-menu.on{display:flex}
.mobile-menu a{padding:13px 8px;font-size:.94rem;color:var(--ink);font-weight:600;border-bottom:1px solid var(--line);letter-spacing:1px;text-decoration:none}
.mobile-menu a:last-child{border-bottom:none}
.mobile-menu a:active{color:var(--gold)}
@media (max-width: 768px){
  header{position:sticky;top:0;z-index:60}
  .nav-r{display:none}
  .nav-toggle{display:flex}
}