/* ============================================================
   大美全城 · dm2007.com — 设计系统 v3
   工业极简 / 墨黑 · 铝银 · 钛金
   类名与旧版完全兼容，全站 216 页统一生效
   ============================================================ */

:root{
  --ink:#0A0D11;
  --ink-2:#151B22;
  --txt:#3B444E;
  --mut:#7A8591;
  --line:#E3E7EB;
  --line-2:#EEF1F4;
  --bg:#FFFFFF;
  --alt:#F6F8F9;
  --alt-2:#EBEFF2;
  --brand:#101820;
  --brand-d:#05080B;
  --brand-l:#33424F;
  --acc:#B08A57;
  --acc-l:#CBAF84;
  --deep:#070A0D;
  --r:6px;
  --r-s:3px;
  --w:1200px;
  --shadow:0 1px 2px rgba(10,13,17,.04),0 10px 30px -14px rgba(10,13,17,.14);
  --shadow-lg:0 2px 6px rgba(10,13,17,.05),0 30px 70px -30px rgba(10,13,17,.26);
  --ease:cubic-bezier(.22,.61,.36,1);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:"PingFang SC","HarmonyOS Sans SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  color:var(--txt);background:var(--bg);line-height:1.78;font-size:15.5px;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
h1,h2,h3,h4{color:var(--ink);line-height:1.2;font-weight:800;letter-spacing:-.025em;text-wrap:balance}
h1{font-size:clamp(30px,4.6vw,54px);letter-spacing:-.035em}
h2{font-size:clamp(23px,3vw,36px)}
h3{font-size:clamp(17px,1.6vw,20px);letter-spacing:-.012em}
p{font-size:15.5px}
::selection{background:rgba(176,138,87,.24);color:var(--ink)}

.wrap{max-width:var(--w);margin:0 auto;padding:0 28px}
.sec{padding:104px 0}
.sec.alt{background:var(--alt)}
.sec.deep{background:var(--deep);color:#A9B2BC}
.sec.deep h2,.sec.deep h3{color:#fff}

/* ---------- 顶部条 ---------- */
.topbar{background:var(--deep);color:#8D97A2;font-size:12px;letter-spacing:.02em}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;height:36px;gap:16px}
.topbar a{transition:color .2s}
.topbar a:hover{color:var(--acc-l)}
.topbar .tb-l{display:flex;gap:18px;align-items:center;overflow:hidden;white-space:nowrap}
.topbar .tb-r{display:flex;gap:18px;align-items:center;white-space:nowrap}
.topbar .dot{width:5px;height:5px;border-radius:50%;background:var(--acc);display:inline-block;margin-right:8px;vertical-align:middle}

/* ---------- 导航 ---------- */
.nav{position:sticky;top:0;z-index:90;background:rgba(255,255,255,.88);backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:68px;gap:16px}
.logo{display:flex;align-items:center;gap:12px;flex-shrink:0}
.logo .mark{
  width:38px;height:38px;border-radius:2px;flex-shrink:0;font-size:0;overflow:hidden;
  background:linear-gradient(150deg,#1E2A36 0%,#0C1219 55%,#05080B 100%);
  position:relative;box-shadow:inset 0 0 0 1px rgba(255,255,255,.12);
}
.logo .mark::before{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(135deg,transparent 47%,rgba(176,138,87,.9) 47%,rgba(176,138,87,.9) 51%,transparent 51%),
    linear-gradient(135deg,transparent 63%,rgba(255,255,255,.26) 63%,rgba(255,255,255,.26) 66%,transparent 66%);
}
.logo .lt{line-height:1.3}
.logo .logo-img{height:38px;width:auto;display:block}
.logo .lt b{display:block;font-size:18px;color:var(--ink);letter-spacing:.06em;font-weight:800}
.logo .lt span{display:block;font-size:9.5px;color:var(--mut);letter-spacing:.22em;text-transform:uppercase;font-weight:500}

.menu{display:flex;align-items:center;gap:0;flex:1;justify-content:center}
.menu > li{position:relative}
.menu > li > a{display:block;padding:12px 13px;font-size:14px;white-space:nowrap;font-weight:500;color:var(--ink-2);
  position:relative;transition:color .2s;letter-spacing:.01em}
.menu > li > a::after{content:"";position:absolute;left:13px;right:13px;bottom:6px;height:1px;background:var(--acc);
  transform:scaleX(0);transform-origin:left;transition:transform .28s var(--ease)}
.menu > li > a:hover{color:var(--ink)}
.menu > li > a:hover::after{transform:scaleX(1)}
.menu > li.on > a{color:var(--ink);font-weight:700}
.menu > li.on > a::after{transform:scaleX(1)}
.sub{position:absolute;top:calc(100% + 2px);left:50%;transform:translateX(-50%) translateY(8px);
  background:#fff;border:1px solid var(--line);border-radius:2px;box-shadow:var(--shadow-lg);
  min-width:216px;padding:6px;opacity:0;visibility:hidden;transition:.24s var(--ease)}
.menu > li:hover .sub{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.sub a{display:block;padding:9px 13px;font-size:13.5px;color:var(--txt);border-radius:2px;white-space:nowrap;transition:.16s}
.sub a:hover{background:var(--alt);color:var(--ink);padding-left:17px}

.nav-cta{display:flex;align-items:center;gap:14px;flex-shrink:0}
.tel-btn{display:flex;flex-direction:column;line-height:1.25;text-align:right}
.tel-btn span{font-size:10.5px;color:var(--mut);letter-spacing:.08em}
.tel-btn b{font-size:16.5px;color:var(--ink);letter-spacing:.01em;font-weight:800}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:2px;font-size:14px;font-weight:600;transition:.26s var(--ease);
  border:1px solid transparent;cursor:pointer;white-space:nowrap;letter-spacing:.02em}
.btn-p{background:var(--ink);color:#fff}
.btn-p:hover{background:var(--brand-l);transform:translateY(-1px);box-shadow:0 10px 24px -12px rgba(10,13,17,.5)}
.btn-o{border-color:var(--line);color:var(--ink-2);background:transparent}
.btn-o:hover{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-gold{background:var(--acc);color:#0B0E12}
.btn-gold:hover{background:var(--acc-l);transform:translateY(-1px);box-shadow:0 10px 26px -12px rgba(176,138,87,.6)}
.btn-ghost{border-color:rgba(255,255,255,.22);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.55)}
.btn-lg{padding:15px 32px;font-size:15px}

.burger{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:2px;background:#fff;
  align-items:center;justify-content:center;cursor:pointer}
.burger i{display:block;width:16px;height:1.5px;background:var(--ink);position:relative}
.burger i::before,.burger i::after{content:"";position:absolute;left:0;width:16px;height:1.5px;background:var(--ink)}
.burger i::before{top:-5px}.burger i::after{top:5px}

/* ---------- Hero ---------- */
.hero{position:relative;background:var(--deep);color:#AEB7C1;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;
  background:
    radial-gradient(1000px 560px at 84% -14%,rgba(176,138,87,.13),transparent 62%),
    radial-gradient(820px 480px at -6% 96%,rgba(56,78,99,.34),transparent 66%);
}
.hero::after{content:"";position:absolute;inset:0;opacity:.5;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.055) .5px,transparent .5px);
  background-size:3px 3px}
.hero-grid{position:absolute;inset:0;opacity:.07;
  background-image:linear-gradient(rgba(255,255,255,.5) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:88px 88px;
  mask-image:radial-gradient(600px 400px at 85% 20%,#000,transparent 75%)}
.hero .wrap{position:relative;z-index:1;padding:112px 28px 104px;display:grid;grid-template-columns:1.06fr .94fr;gap:68px;align-items:center}
.hero h1{color:#fff;margin-bottom:24px}
.hero h1 em{font-style:normal;color:var(--acc-l);position:relative}
.hero .lead{font-size:16px;color:#98A3AE;max-width:54ch;margin-bottom:32px;line-height:1.85}
.hero-kw{display:flex;flex-wrap:wrap;gap:0;margin-bottom:36px}
.hero-kw span{font-size:12px;padding:0 14px;color:#8B96A1;border-right:1px solid rgba(255,255,255,.12);letter-spacing:.02em}
.hero-kw span:first-child{padding-left:0}
.hero-kw span:last-child{border-right:0}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}

.hero-card{position:relative}
.hero-card .ph{border-radius:2px;overflow:hidden;aspect-ratio:4/3.15;background:#11161C;
  box-shadow:0 40px 100px -40px rgba(0,0,0,.9),inset 0 0 0 1px rgba(255,255,255,.09)}
.hero-card .ph img{width:100%;height:100%;object-fit:cover;filter:contrast(1.04) saturate(.96)}
.hero-card .cap{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-top:0;
  border-top:1px solid rgba(255,255,255,.1);background:transparent;border-radius:0;overflow:visible}
.hero-card .cap div{padding:16px 4px 0;text-align:left;border-right:1px solid rgba(255,255,255,.08)}
.hero-card .cap div:last-child{border-right:0}
.hero-card .cap div:nth-child(2),.hero-card .cap div:nth-child(3){padding-left:16px}
.hero-card .cap b{display:block;font-size:22px;color:#fff;line-height:1.1;font-weight:800;letter-spacing:-.02em}
.hero-card .cap span{font-size:10.5px;color:#7C8792;letter-spacing:.1em;text-transform:uppercase}

/* 数据条 */
.stats{background:#fff;border-bottom:1px solid var(--line)}
.stats .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:0;background:transparent}
.stats .it{padding:40px 26px 38px;text-align:left;border-right:1px solid var(--line);position:relative}
.stats .it:first-child{padding-left:0}
.stats .it:last-child{border-right:0}
.stats .it b{display:block;font-size:38px;color:var(--ink);line-height:1;letter-spacing:-.04em;font-weight:800}
.stats .it b i{font-style:normal;font-size:14px;color:var(--acc);margin-left:3px;font-weight:600;letter-spacing:0}
.stats .it span{display:block;margin-top:10px;font-size:12px;color:var(--mut);letter-spacing:.1em}

/* ---------- 区块标题 ---------- */
.hd{max-width:740px;margin-bottom:52px}
.hd.center{margin-left:auto;margin-right:auto;text-align:center}
.hd .eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:11px;font-weight:700;
  letter-spacing:.22em;color:var(--acc);text-transform:uppercase;margin-bottom:18px}
.hd .eyebrow::before{content:"";width:26px;height:1px;background:var(--acc)}
.hd h2{margin-bottom:16px}
.hd p{color:var(--mut);font-size:15px;line-height:1.85}
.sec.deep .hd p{color:#8B96A1}

/* ---------- 卡片网格 ---------- */
.grid{display:grid;gap:24px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}

.card{background:#fff;border:1px solid var(--line);border-radius:2px;overflow:hidden;
  transition:transform .42s var(--ease),box-shadow .42s var(--ease),border-color .3s;position:relative}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:#D3D9DF}
.card .thumb{aspect-ratio:4/3;overflow:hidden;background:var(--alt-2);position:relative}
.card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .9s var(--ease);filter:contrast(1.02)}
.card .thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(6,9,12,.22),transparent 48%);
  opacity:0;transition:opacity .42s}
.card:hover .thumb img{transform:scale(1.05)}
.card:hover .thumb::after{opacity:1}
.card .bd{padding:22px 22px 24px}
.card .bd h3{font-size:17.5px;margin-bottom:9px;font-weight:700}
.card .bd p{font-size:13.5px;color:var(--mut);line-height:1.75;margin-bottom:14px}
.card .meta{display:flex;flex-wrap:wrap;gap:6px}
.card .meta span{font-size:11px;padding:3px 8px;border-radius:2px;background:transparent;color:#6C7783;
  border:1px solid var(--line);letter-spacing:.02em}
.card .more{display:inline-flex;align-items:center;gap:7px;font-size:12.5px;font-weight:600;color:var(--ink);margin-top:14px;letter-spacing:.06em}
.card .more::after{content:"→";transition:transform .3s var(--ease);font-weight:400}
.card:hover .more::after{transform:translateX(4px)}
.card .tagline{position:absolute;top:0;left:0;font-size:10.5px;font-weight:600;letter-spacing:.09em;
  padding:6px 11px;border-radius:0;background:rgba(6,9,12,.82);color:#E8EDF2;backdrop-filter:blur(8px);z-index:2}

/* ---------- 产品线列表 ---------- */
.plist{display:grid;gap:0;border-top:1px solid var(--line)}
.prow{display:grid;grid-template-columns:300px 1fr auto;gap:38px;align-items:center;
  padding:28px 0 28px 0;border-bottom:1px solid var(--line);transition:.3s var(--ease);position:relative}
.prow::before{content:"";position:absolute;left:-28px;top:0;bottom:0;width:2px;background:var(--acc);
  transform:scaleY(0);transform-origin:top;transition:transform .38s var(--ease)}
.prow:hover{padding-left:16px}
.prow:hover::before{transform:scaleY(1)}
.prow .pth{aspect-ratio:16/10;border-radius:2px;overflow:hidden;background:var(--alt-2)}
.prow .pth img{width:100%;height:100%;object-fit:cover;transition:transform .8s var(--ease)}
.prow:hover .pth img{transform:scale(1.04)}
.prow h3{font-size:19px;margin-bottom:8px}
.prow h3 a:hover{color:var(--brand-l)}
.prow p{font-size:13.5px;color:var(--mut);max-width:62ch;line-height:1.78}
.prow .pmeta{display:flex;gap:6px;margin-top:12px;flex-wrap:wrap}
.prow .pmeta span{font-size:11px;padding:3px 8px;border-radius:2px;border:1px solid var(--line);color:#6C7783}

/* ---------- 场景 ---------- */
.scene{position:relative;border-radius:2px;overflow:hidden;min-height:280px;
  display:flex;align-items:flex-end;background:var(--ink);isolation:isolate}
.scene img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2;transition:transform .9s var(--ease);opacity:.78}
.scene::after{content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(to top,rgba(5,8,11,.94) 0%,rgba(5,8,11,.42) 52%,rgba(5,8,11,.1) 100%)}
.scene:hover img{transform:scale(1.05);opacity:.9}
.scene .bd{padding:26px;color:#B7C0CA}
.scene .bd h3{color:#fff;font-size:19px;margin-bottom:7px}
.scene .bd p{font-size:13px;color:#939EA9;line-height:1.7}
.scene .bd .lnk{margin-top:14px;font-size:12px;color:var(--acc-l);font-weight:600;letter-spacing:.08em}

/* ---------- 流程 ---------- */
.flow{display:grid;grid-template-columns:repeat(5,1fr);gap:0;counter-reset:s;border-top:1px solid var(--line)}
.flow .st{position:relative;padding:34px 26px 0 0;border:0;border-right:1px solid var(--line);border-radius:0;background:transparent}
.flow .st:last-child{border-right:0;padding-right:0}
.flow .st::before{counter-increment:s;content:"0" counter(s);display:block;font-size:11px;font-weight:800;
  color:var(--acc);letter-spacing:.16em;margin-bottom:16px}
.flow .st::after{content:"";position:absolute;top:-3.5px;left:0;width:7px;height:7px;background:var(--acc);border-radius:50%}
.flow .st h3{font-size:15.5px;margin-bottom:8px;font-weight:700}
.flow .st p{font-size:13px;color:var(--mut);line-height:1.72;padding-right:8px}

/* ---------- 表格 ---------- */
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:2px;background:#fff}
table.tbl{width:100%;border-collapse:collapse;font-size:13.5px;min-width:640px}
table.tbl th,table.tbl td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--line-2)}
table.tbl th{background:#F4F6F8;font-weight:700;color:var(--ink);font-size:11.5px;letter-spacing:.1em;
  white-space:nowrap;border-bottom:1px solid var(--line)}
table.tbl td{color:var(--txt)}
table.tbl tr:last-child td{border-bottom:none}
table.tbl tbody tr{transition:background .18s}
table.tbl tbody tr:hover{background:#FAFBFC}

/* ---------- 品牌卡 ---------- */
.brands{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--line);border-radius:2px;overflow:hidden}
.brand-card{padding:44px 40px;position:relative;overflow:hidden;color:#fff;isolation:isolate;border-right:1px solid var(--line)}
.brand-card:last-child{border-right:0}
.brand-card.a{background:#0C1116}
.brand-card.b{background:#111820}
.brand-card::after{content:"";position:absolute;right:-60px;top:-60px;width:240px;height:240px;
  background:radial-gradient(circle,rgba(176,138,87,.16),transparent 68%);z-index:-1}
.brand-card .bk{font-size:10.5px;letter-spacing:.24em;color:#8C97A2;margin-bottom:14px}
.brand-card h3{font-size:24px;color:#fff;margin-bottom:12px;letter-spacing:.02em}
.brand-card p{font-size:14px;color:#9BA6B1;line-height:1.85;margin-bottom:20px}
.brand-card .bl{display:flex;flex-wrap:wrap;gap:8px}
.brand-card .bl span{font-size:11.5px;padding:4px 10px;border:1px solid rgba(255,255,255,.16);color:#C6D0DA}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{padding:20px 0;font-weight:600;color:var(--ink);cursor:pointer;font-size:15px;
  display:flex;justify-content:space-between;align-items:center;gap:20px;list-style:none;transition:color .2s}
.faq summary:hover{color:var(--brand-l)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";width:11px;height:11px;flex-shrink:0;position:relative;
  background:
    linear-gradient(var(--acc),var(--acc)) center/11px 1px no-repeat,
    linear-gradient(var(--acc),var(--acc)) center/1px 11px no-repeat;
  transition:transform .3s var(--ease)}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq .ans{padding:0 40px 22px 0;font-size:13.5px;color:var(--mut);line-height:1.9}

/* ---------- CTA ---------- */
.cta{background:var(--deep);color:#fff;position:relative;overflow:hidden}
.cta::before{content:"";position:absolute;inset:0;
  background:radial-gradient(720px 380px at 88% 10%,rgba(176,138,87,.16),transparent 62%)}
.cta::after{content:"";position:absolute;left:0;top:0;bottom:0;width:1px;background:linear-gradient(to bottom,transparent,rgba(176,138,87,.5),transparent)}
.cta .wrap{position:relative;padding:78px 28px;display:grid;grid-template-columns:1fr auto;gap:48px;align-items:center}
.cta h2{color:#fff;margin-bottom:12px;font-size:clamp(22px,2.6vw,32px)}
.cta p{color:#8E99A4;font-size:14.5px}
.cta .acts{display:flex;gap:12px;flex-wrap:wrap}
.cta .btn-gold{background:#fff;color:var(--ink)}
.cta .btn-gold:hover{background:#F1F3F5}

/* ---------- 面包屑 / 页头 / 正文 ---------- */
.crumb{font-size:12px;color:var(--mut);padding:18px 0;border-bottom:1px solid var(--line);background:#fff;letter-spacing:.02em}
.crumb a{transition:color .2s}
.crumb a:hover{color:var(--ink)}
.crumb span{margin:0 8px;opacity:.45}

.pagehead{background:var(--alt);border-bottom:1px solid var(--line);padding:60px 0 56px;position:relative}
.pagehead::after{content:"";position:absolute;left:0;bottom:-1px;width:64px;height:2px;background:var(--acc)}
.pagehead h1{font-size:clamp(26px,3.6vw,40px);margin-bottom:14px}
.pagehead p{color:var(--mut);max-width:70ch;font-size:15px}

.prose{max-width:820px;font-size:16px;line-height:1.95;color:var(--txt)}
.prose h2{font-size:23px;margin:44px 0 16px;padding-left:0;border-left:0;position:relative;padding-top:22px;border-top:1px solid var(--line)}
.prose h2::before{content:"";position:absolute;left:0;top:-1px;width:44px;height:2px;background:var(--acc)}
.prose h3{font-size:18px;margin:32px 0 12px}
.prose p{margin-bottom:17px}
.prose ul,.prose ol{margin:0 0 20px 0;padding-left:0}
.prose ul li{position:relative;padding-left:20px;margin-bottom:10px}
.prose ul li::before{content:"";position:absolute;left:3px;top:11px;width:5px;height:5px;background:var(--acc)}
.prose ol{counter-reset:o}
.prose ol li{position:relative;padding-left:28px;margin-bottom:10px;counter-increment:o}
.prose ol li::before{content:counter(o);position:absolute;left:0;top:2px;width:19px;height:19px;border-radius:50%;
  border:1px solid var(--line);color:var(--ink);font-size:11px;font-weight:700;display:grid;place-items:center;background:#fff}
.prose table{width:100%;border-collapse:collapse;font-size:13.5px;margin:24px 0}
.prose th,.prose td{border-bottom:1px solid var(--line);padding:12px 14px;text-align:left}
.prose th{background:#F4F6F8;font-weight:700;font-size:11.5px;letter-spacing:.08em}
.prose img{border-radius:2px;margin:24px 0}
.prose blockquote{border-left:2px solid var(--acc);background:var(--alt);padding:20px 24px;border-radius:0;margin:24px 0;color:var(--ink-2);font-size:15px}

/* 文章列表 */
.alist{display:grid;gap:0;border-top:1px solid var(--line)}
.arow{display:grid;grid-template-columns:1fr auto;gap:24px;padding:22px 4px;border-bottom:1px solid var(--line);align-items:center;transition:.24s var(--ease)}
.arow:hover{padding-left:14px;background:#FAFBFC}
.arow h3{font-size:16.5px;margin-bottom:6px;font-weight:600;letter-spacing:-.005em}
.arow h3 a:hover{color:var(--brand-l)}
.arow p{font-size:13px;color:var(--mut);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.arow .dt{font-size:12px;color:var(--mut);white-space:nowrap;letter-spacing:.02em}

/* ---------- 表单 ---------- */
.form{background:#fff;border:1px solid var(--line);border-radius:2px;padding:32px;box-shadow:var(--shadow)}
.form .row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px}
.field{display:flex;flex-direction:column;gap:7px}
.field label{font-size:12px;font-weight:600;color:var(--ink-2);letter-spacing:.04em}
.field input,.field select,.field textarea{
  border:1px solid var(--line);border-radius:2px;padding:12px 14px;font-size:14px;font-family:inherit;
  color:var(--ink);background:#fff;transition:.2s;width:100%}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--ink);box-shadow:0 0 0 3px rgba(16,24,32,.06)}
.field textarea{min-height:100px;resize:vertical}
.form .note{font-size:12px;color:var(--mut);margin-top:12px;line-height:1.7}

/* ---------- 页脚 ---------- */
.foot{background:var(--deep);color:#7E8A96;font-size:13.5px;padding:76px 0 0}
.foot .cols{display:grid;grid-template-columns:1.7fr .9fr .9fr .9fr auto;gap:44px;padding-bottom:52px}
.foot h4{color:#fff;font-size:12px;margin-bottom:20px;letter-spacing:.14em;font-weight:700}
.foot a{transition:color .2s}
.foot a:hover{color:var(--acc-l)}
.foot li{margin-bottom:11px;font-size:13px}
.foot .brandline{display:flex;align-items:center;gap:11px;margin-bottom:18px}
.foot .brandline .mark{width:34px;height:34px;border-radius:2px;font-size:0;position:relative;overflow:hidden;
  background:linear-gradient(150deg,#1E2A36,#05080B);box-shadow:inset 0 0 0 1px rgba(255,255,255,.12)}
.foot .brandline .mark::before{content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,transparent 47%,rgba(176,138,87,.9) 47%,rgba(176,138,87,.9) 51%,transparent 51%)}
.foot .brandline b{color:#fff;font-size:16px;letter-spacing:.06em;font-weight:800}
.foot .addr{line-height:1.95;font-size:13px;color:#77828E}
.foot .qr{width:96px;height:96px;background:#fff;border-radius:2px;padding:6px}
.foot .qr img{width:100%;height:100%;object-fit:contain}
.foot .bot{border-top:1px solid rgba(255,255,255,.08);padding:22px 0;display:flex;justify-content:space-between;
  gap:16px;flex-wrap:wrap;font-size:12px;color:#5E6873;letter-spacing:.02em}
.foot .bot a{color:#7E8A96}

/* 热门需求条 */
.hot-links{background:#0B1016;border-top:1px solid rgba(255,255,255,.07);padding:16px 0}
.hot-links .wrap{max-width:var(--w);margin:0 auto;padding:0 28px;display:flex;gap:22px;flex-wrap:wrap;align-items:center}
.hot-links b{color:#5E6873;font-size:11px;font-weight:600;letter-spacing:.16em}
.hot-links a{color:#9AA5B0;font-size:12.5px;text-decoration:none;transition:color .2s;letter-spacing:.01em}
.hot-links a:hover{color:var(--acc-l)}

/* 页脚询价表单 */
.quick-lead{background:var(--alt);color:var(--ink);padding:40px 0;border-top:1px solid var(--line)}
.quick-lead .wrap{max-width:var(--w);margin:0 auto;padding:0 28px}
.ql-head{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap;margin-bottom:18px}
.ql-head b{font-size:17px;color:var(--ink);letter-spacing:-.01em;font-weight:800}
.ql-head span{font-size:12.5px;color:var(--mut)}
.quick-lead form{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.quick-lead input,.quick-lead select{height:46px;padding:0 14px;border-radius:2px;border:1px solid var(--line);
  background:#fff;color:var(--ink);font-size:13.5px;min-width:160px;font-family:inherit;transition:.2s}
.quick-lead input:focus,.quick-lead select:focus{outline:none;border-color:var(--ink)}
.quick-lead input::placeholder{color:#9AA5B0}
.quick-lead select option{color:var(--ink)}
.quick-lead button{height:46px;padding:0 26px;border:0;border-radius:2px;background:var(--ink);color:#fff;
  font-weight:600;font-size:14px;cursor:pointer;transition:.24s var(--ease);letter-spacing:.02em}
.quick-lead button:hover{background:var(--brand-l)}
.ql-tel{color:var(--ink);font-size:12.5px;text-decoration:none;margin-left:6px;border-bottom:1px solid #C9D0D7;padding-bottom:2px}
.ql-tel:hover{border-color:var(--ink)}
.ql-msg{margin:12px 0 0;font-size:12.5px;min-height:18px;color:#2F7D5A}
.ql-msg.err{color:#B4453C}

/* 访问统计 */
.site-visits{background:#fff;color:var(--mut);font-size:12px;padding:16px 0;border-top:1px solid var(--line)}
.site-visits .wrap{display:flex;align-items:center;justify-content:center;gap:12px;flex-wrap:wrap;letter-spacing:.04em}
.site-visits b{color:var(--ink);font-weight:700;font-size:13px}
.site-visits .sv-dot{opacity:.35}

/* ---------- 参数条 / 工艺 ---------- */
.specbar{display:grid;grid-template-columns:repeat(4,1fr);gap:0;background:transparent;
  border:1px solid var(--line);border-radius:2px;overflow:hidden;margin:28px 0}
.specbar div{background:#fff;padding:18px 16px;border-right:1px solid var(--line)}
.specbar div:last-child{border-right:0}
.specbar span{display:block;font-size:10.5px;color:var(--mut);letter-spacing:.12em;margin-bottom:6px}
.specbar b{font-size:15px;color:var(--ink);font-weight:700;letter-spacing:-.01em}

.craft{display:grid;gap:0;border-top:1px solid var(--line)}
.craft .cr{display:grid;grid-template-columns:52px 200px 1fr;gap:26px;padding:26px 0;
  border-bottom:1px solid var(--line);align-items:start}
.craft .cr .no{font-size:24px;font-weight:800;color:#D9DFE5;letter-spacing:-.04em;line-height:1}
.craft .cr h3{font-size:16.5px;margin-bottom:6px;font-weight:700}
.craft .cr p{font-size:13.5px;color:var(--mut);line-height:1.8}

/* ---------- 移动 ---------- */
@media(max-width:1024px){
  .hero .wrap{grid-template-columns:1fr;gap:44px;padding:72px 28px 64px}
  .hero-card{max-width:560px}
  .stats .wrap{grid-template-columns:repeat(2,1fr)}
  .stats .it{padding:32px 20px;border-bottom:1px solid var(--line)}
  .stats .it:nth-child(2n){border-right:0}
  .stats .it:first-child{padding-left:20px}
  .stats .it:nth-child(3),.stats .it:nth-child(4){border-bottom:0}
  .g4{grid-template-columns:repeat(2,1fr)}
  .flow{grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line)}
  .flow .st{padding:30px 20px 24px 0}
  .flow .st:nth-child(3),.flow .st:nth-child(4),.flow .st:nth-child(5){border-top:1px solid var(--line)}
  .flow .st:nth-child(3)::after,.flow .st:nth-child(4)::after,.flow .st:nth-child(5)::after{top:-3.5px}
  .foot .cols{grid-template-columns:1fr 1fr;gap:34px}
  .prow{grid-template-columns:200px 1fr;gap:24px}
  .prow .act{grid-column:1/-1}
  .brands{grid-template-columns:1fr}
  .brand-card{border-right:0;border-bottom:1px solid var(--line)}
  .brand-card:last-child{border-bottom:0}
}
@media(max-width:820px){
  .menu,.nav-cta .tel-btn,.topbar .tb-l{display:none}
  .burger{display:flex}
  .nav .wrap{height:62px}
  .g3,.g2{grid-template-columns:1fr}
  .cta .wrap{grid-template-columns:1fr;padding:56px 28px;gap:28px}
  .sec{padding:68px 0}
  .prow{grid-template-columns:1fr}
  .prow .pth{max-width:100%}
  .prow:hover{padding-left:0}
  .prow::before{display:none}
  .form .row{grid-template-columns:1fr}
  .foot .cols{grid-template-columns:1fr;gap:30px}
  .hd{margin-bottom:34px}
  .flow{grid-template-columns:1fr}
  .flow .st{border-right:0;border-bottom:1px solid var(--line);padding:24px 0 24px 22px}
  .flow .st::after{left:0;top:30px}
  .flow .st:last-child{border-bottom:0}
  .quick-lead input,.quick-lead select{flex:1 1 45%;min-width:0}
  .quick-lead button{flex:1 1 100%}
  .ql-tel{margin-left:0;margin-top:6px}
  .craft .cr{grid-template-columns:38px 1fr;gap:14px}
  .craft .cr p{grid-column:1/-1}
  .hero-kw span{padding:0 12px}
}
@media(max-width:520px){
  .wrap{padding:0 20px}
  .g4{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr}
  .stats .wrap{grid-template-columns:1fr 1fr}
  .hero .wrap{padding:56px 20px 48px}
  .sec{padding:56px 0}
  .specbar{grid-template-columns:1fr 1fr}
  .hero-kw{gap:8px 0}
  .hero-kw span{font-size:11px;padding:0 10px}
  .foot .cols{gap:26px}
  .quick-lead .wrap,.hot-links .wrap{padding:0 20px}
}

/* ---------- 手机抽屉 ---------- */
.drawer{position:fixed;inset:0;z-index:200;background:rgba(6,9,12,.55);opacity:0;visibility:hidden;transition:.26s;
  backdrop-filter:blur(2px)}
.drawer.open{opacity:1;visibility:visible}
.drawer .panel{position:absolute;right:0;top:0;bottom:0;width:84%;max-width:360px;background:#fff;
  transform:translateX(100%);transition:.32s var(--ease);overflow-y:auto;padding:24px 22px}
.drawer.open .panel{transform:none}
.drawer .panel h5{font-size:10.5px;letter-spacing:.2em;color:var(--acc);margin:22px 0 6px;font-weight:700;text-transform:uppercase}
.drawer .panel a{display:block;padding:11px 0;border-bottom:1px solid var(--line-2);font-size:14.5px;color:var(--ink-2)}
.drawer .panel a:active{color:var(--brand-l)}
.drawer .close{position:absolute;right:18px;top:16px;font-size:22px;color:var(--mut);background:none;border:0;cursor:pointer;line-height:1}

/* 图片统一质感 */
.card img,.scene img,.prow img,.hero-card img{will-change:transform}