/* ==========================================================================
   晨风紧固件 · CHENFENG FASTENER — 全站样式表
   零外部依赖（不引用任何 CDN / 字体 / 图标库），保证国内可访问
   ========================================================================== */

/* ---------------------------------------------------------------- 变量 */
:root{
  --navy:#0d2136; --navy-2:#15304d; --navy-3:#1e4166;
  --accent:#e8620c; --accent-d:#c14f06; --accent-l:#fff1e6;
  --ok:#12795a; --warn:#b26a00;
  --bg:#f7f9fb; --bg-2:#eef3f8; --card:#ffffff;
  --line:#e2e8f0; --line-2:#d3dde8;
  --txt:#16212e; --txt-2:#41556b; --muted:#6b8095;
  --radius:14px; --radius-sm:9px; --radius-lg:22px;
  --sh-1:0 1px 2px rgba(16,32,50,.06), 0 2px 8px rgba(16,32,50,.05);
  --sh-2:0 4px 12px rgba(16,32,50,.08), 0 12px 32px rgba(16,32,50,.08);
  --sh-3:0 18px 48px rgba(16,32,50,.16);
  --wrap:1200px; --hdr:72px;
  --font:"PingFang SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
}

/* ---------------------------------------------------------------- 基础 */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--hdr) + 16px)}
body{margin:0;font-family:var(--font);font-size:16px;line-height:1.68;color:var(--txt);
  background:var(--bg);-webkit-font-smoothing:antialiased;overflow-x:hidden}
img,svg{max-width:100%;display:block}
a{color:var(--navy-3);text-decoration:none;transition:color .18s}
a:hover{color:var(--accent)}
h1,h2,h3,h4{margin:0 0 .5em;line-height:1.22;font-weight:750;letter-spacing:-.015em;color:var(--navy)}
h1{font-size:clamp(1.9rem,3.6vw,3.05rem)}
h2{font-size:clamp(1.42rem,2.3vw,2.05rem)}
h3{font-size:1.12rem}
p{margin:0 0 1em}
ul{margin:0;padding:0;list-style:none}
table{border-collapse:collapse;width:100%}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:3px solid rgba(232,98,12,.55);outline-offset:2px;border-radius:4px}
.skip{position:absolute;left:-9999px;top:0;background:#fff;padding:12px 18px;z-index:999;border-radius:0 0 8px 0}
.skip:focus{left:0}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 22px}
.center{text-align:center}
.muted{color:var(--muted);font-size:.94rem}
.ic{flex:0 0 auto}
.hide-sm{display:inline-flex}

/* ---------------------------------------------------------------- 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:12px 22px;
  border-radius:var(--radius-sm);border:1.6px solid transparent;font-weight:650;font-size:.95rem;
  cursor:pointer;transition:transform .16s,box-shadow .18s,background .18s,color .18s,border-color .18s;
  white-space:nowrap;line-height:1.2}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 2px 10px rgba(232,98,12,.28)}
.btn-primary:hover{background:var(--accent-d);color:#fff;box-shadow:0 6px 20px rgba(232,98,12,.36)}
.btn-ghost{background:#fff;color:var(--navy);border-color:var(--line-2)}
.btn-ghost:hover{background:var(--navy);color:#fff;border-color:var(--navy)}
.btn-dark{background:var(--navy);color:#fff}
.btn-dark:hover{background:var(--navy-3);color:#fff}
.btn-sm{padding:9px 15px;font-size:.86rem}
.btn-lg{padding:15px 30px;font-size:1rem}
.btn-block{width:100%}
.btn[disabled]{opacity:.6;pointer-events:none}

/* ---------------------------------------------------------------- 头部 */
.hdr{position:sticky;top:0;z-index:120;background:rgba(255,255,255,.94);
  backdrop-filter:saturate(160%) blur(10px);border-bottom:1px solid var(--line);transition:box-shadow .2s}
.hdr.on{box-shadow:0 4px 20px rgba(16,32,50,.09)}
.hdr-in{display:flex;align-items:center;gap:18px;height:var(--hdr)}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.brand-mark{width:42px;height:42px;border-radius:11px;background:linear-gradient(150deg,var(--navy-2),var(--navy));
  display:grid;place-items:center;color:#fff;box-shadow:var(--sh-1)}
.brand-txt{display:flex;flex-direction:column;line-height:1.16}
.brand-txt b{font-size:.98rem;letter-spacing:.06em;color:var(--navy);font-weight:800}
.brand-txt i{font-size:.66rem;letter-spacing:.14em;color:var(--muted);font-style:normal;text-transform:uppercase}
.nav{margin-left:auto}
.nav>ul{display:flex;align-items:center;gap:2px}
.nav>ul>li>a{display:inline-flex;align-items:center;gap:5px;padding:9px 13px;border-radius:8px;
  font-size:.9rem;font-weight:600;color:var(--txt-2);white-space:nowrap}
.nav>ul>li>a:hover{background:var(--bg-2);color:var(--navy)}
.nav a[aria-current="page"]{color:var(--accent);background:var(--accent-l)}
.has-sub{position:relative}
.has-sub>a .car{transition:transform .2s}
.has-sub:hover>a .car{transform:rotate(180deg)}
.sub{position:absolute;top:calc(100% + 10px);left:50%;transform:translateX(-50%) translateY(6px);
  width:296px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--sh-3);padding:9px;opacity:0;visibility:hidden;transition:.2s;z-index:50}
.has-sub:hover .sub,.has-sub:focus-within .sub{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.sub li a{display:flex;align-items:center;gap:11px;padding:9px 11px;border-radius:9px;
  font-size:.88rem;font-weight:600;color:var(--txt-2)}
.sub li a:hover{background:var(--bg-2);color:var(--navy)}
.sub li a .nic{width:32px;height:32px;border-radius:8px;background:var(--bg-2);display:grid;place-items:center;color:var(--navy-3)}
.sub li a b{margin-left:auto;font-size:.7rem;color:var(--muted);background:var(--bg-2);
  padding:2px 7px;border-radius:20px}
.sub-all a{justify-content:center;color:var(--accent)!important;font-weight:700!important;
  border-top:1px solid var(--line);margin-top:6px;padding-top:12px!important}
.nav-foot{display:none}
.hdr-act{display:flex;align-items:center;gap:10px;margin-left:auto}
.lang-sw{font-size:.8rem;font-weight:700;padding:7px 12px;border:1.4px solid var(--line-2);
  border-radius:20px;color:var(--navy);white-space:nowrap}
.lang-sw:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-l)}
.burger{display:none;width:42px;height:42px;border:1.4px solid var(--line-2);background:#fff;
  border-radius:10px;cursor:pointer;padding:0;place-items:center}
.burger span{display:block;width:19px;height:2px;background:var(--navy);margin:3.4px auto;border-radius:2px;transition:.22s}

/* ---------------------------------------------------------------- HERO */
.hero{position:relative;background:
    radial-gradient(1000px 520px at 84% -8%, rgba(30,65,102,.10), transparent 62%),
    linear-gradient(178deg,#ffffff 0%, #f4f8fb 100%);
  border-bottom:1px solid var(--line);overflow:hidden}
.hero::after{content:"";position:absolute;inset:auto -10% -60% 46%;height:520px;
  background:radial-gradient(closest-side,rgba(232,98,12,.09),transparent);pointer-events:none}
.hero-in{display:grid;grid-template-columns:1.08fr .92fr;gap:52px;align-items:center;padding:70px 0 58px;position:relative}
.badge{display:inline-flex;align-items:center;gap:8px;background:var(--accent-l);color:var(--accent-d);
  border:1px solid #ffd9bd;padding:7px 15px;border-radius:30px;font-size:.78rem;font-weight:700;
  letter-spacing:.03em;margin-bottom:20px}
.hero h1{margin-bottom:18px}
.hero-lead{font-size:1.06rem;color:var(--txt-2);max-width:60ch;margin-bottom:22px}
.hero-list{display:grid;gap:9px;margin-bottom:28px}
.hero-list li{display:flex;gap:10px;align-items:flex-start;font-size:.94rem;color:var(--txt-2)}
.hero-list li .ic{color:var(--ok);margin-top:3px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:26px}
.hero-chips{display:flex;flex-wrap:wrap;gap:7px}
.chip{display:inline-block;padding:6px 13px;background:#fff;border:1px solid var(--line-2);
  border-radius:20px;font-size:.79rem;font-weight:600;color:var(--txt-2)}
.chip:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-l)}
.chip-row{display:flex;flex-wrap:wrap;gap:8px}
.hero-art{position:relative}
.hero-art img{width:100%;height:auto;border-radius:var(--radius-lg);box-shadow:var(--sh-2);
  border:1px solid var(--line)}

/* 数据条 */
.stat-bar{background:var(--navy);color:#fff}
.stat-in{display:grid;grid-template-columns:repeat(4,1fr);padding:22px 22px}
.stat{text-align:center;padding:6px 10px;border-right:1px solid rgba(255,255,255,.13)}
.stat:last-child{border-right:0}
.stat b{display:block;font-size:1.72rem;font-weight:800;letter-spacing:-.02em;color:#fff}
.stat span{font-size:.77rem;color:#9fb8d0;letter-spacing:.04em;text-transform:uppercase}

/* ---------------------------------------------------------------- 区块 */
.sec{padding:74px 0}
.sec-alt{background:var(--bg-2)}
.sec-head{max-width:760px;margin:0 0 40px}
.sec-head.center{margin-inline:auto;text-align:center}
.sec-sub{color:var(--muted);font-size:1rem;margin:0}
.sec h2{margin-bottom:12px}

/* 分类卡片 */
.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.cat-card{display:flex;flex-direction:column;gap:7px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:24px 22px 20px;box-shadow:var(--sh-1);transition:.22s;position:relative;overflow:hidden}
.cat-card::before{content:"";position:absolute;left:0;top:0;width:100%;height:3px;
  background:linear-gradient(90deg,var(--accent),#f4a261);transform:scaleX(0);transform-origin:left;transition:.3s}
.cat-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#cfdcea}
.cat-card:hover::before{transform:scaleX(1)}
.cat-ic{width:54px;height:54px;border-radius:14px;background:linear-gradient(150deg,var(--bg-2),#dbe5ef);
  display:grid;place-items:center;color:var(--navy-3);margin-bottom:8px}
.cat-card b{font-size:1.06rem;color:var(--navy)}
.cat-card i{font-size:.74rem;color:var(--accent);font-style:normal;font-weight:700;letter-spacing:.05em;text-transform:uppercase}
.cat-card p{font-size:.87rem;color:var(--muted);margin:4px 0 6px;flex:1}
.cat-more{display:inline-flex;align-items:center;gap:6px;font-size:.82rem;font-weight:700;color:var(--navy-3)}
.cat-card.sm{padding:18px;align-items:flex-start}
.cat-card.sm .cat-ic{width:46px;height:46px;border-radius:12px}
.cat-row{display:grid;grid-template-columns:repeat(auto-fill,minmax(178px,1fr));gap:13px;margin-top:26px}

/* 产品卡片 */
.pgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(298px,1fr));gap:20px}
.pcard{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  display:flex;flex-direction:column;box-shadow:var(--sh-1);transition:.22s}
.pcard:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#cfdcea}
.pcard-img{background:var(--bg-2);aspect-ratio:3/2;overflow:hidden;border-bottom:1px solid var(--line)}
.pcard-img img{width:100%;height:100%;object-fit:cover}
.pcard-body{padding:18px 18px 20px;display:flex;flex-direction:column;flex:1}
.pcard-cat{font-size:.7rem;font-weight:800;letter-spacing:.09em;text-transform:uppercase;color:var(--accent);
  margin-bottom:6px}
.pcard-t{font-size:1.03rem;margin:0 0 8px;color:var(--navy)}
.pcard-s{font-size:.85rem;color:var(--muted);margin:0 0 13px;flex:1;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.pcard-spec{display:grid;gap:5px;margin:0 0 16px;padding:12px;background:var(--bg);border-radius:var(--radius-sm);
  border:1px solid var(--line)}
.pcard-spec li{display:flex;gap:10px;font-size:.78rem;line-height:1.45}
.pcard-spec b{flex:0 0 74px;color:var(--muted);font-weight:600}
.pcard-spec span{color:var(--txt-2);flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.pcard-act{display:flex;gap:9px}
.pcard-act .btn{flex:1}

/* 筛选条 */
.fbar{display:flex;align-items:center;gap:11px;flex-wrap:wrap;padding:14px 16px;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--sh-1);margin-bottom:26px}
.fsearch{position:relative;display:flex;align-items:center;gap:8px;flex:1;min-width:240px;
  background:var(--bg);border:1.4px solid var(--line-2);border-radius:9px;padding:0 12px;color:var(--muted)}
.fsearch input{flex:1;border:0;background:transparent;padding:10px 0;outline:0;font-size:.9rem}
.fsel{padding:10px 13px;border:1.4px solid var(--line-2);border-radius:9px;background:#fff;
  font-size:.88rem;font-weight:600;cursor:pointer;min-width:180px}
.fcheck{display:inline-flex;align-items:center;gap:7px;font-size:.86rem;font-weight:600;color:var(--txt-2);cursor:pointer}
.fcheck input{width:17px;height:17px;accent-color:var(--accent)}
.fcount{margin-left:auto;font-size:.82rem;color:var(--muted);font-weight:600}
.empty{padding:56px 20px;text-align:center;color:var(--muted);background:#fff;border:1px dashed var(--line-2);
  border-radius:var(--radius)}

/* 为什么选择 */
.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.why-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;
  box-shadow:var(--sh-1);transition:.22s}
.why-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.why-ic{width:50px;height:50px;border-radius:13px;background:var(--accent-l);color:var(--accent);
  display:grid;place-items:center;margin-bottom:14px}
.why-card h3{margin-bottom:8px;font-size:1.05rem}
.why-card p{font-size:.89rem;color:var(--muted);margin:0}

/* 流程 */
.proc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;counter-reset:p}
.pstep{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px 24px;box-shadow:var(--sh-1)}
.pstep-n{display:inline-block;font-family:var(--mono);font-size:.8rem;font-weight:700;color:#fff;
  background:var(--navy);padding:4px 11px;border-radius:7px;margin-bottom:13px;letter-spacing:.06em}
.pstep h3{font-size:1.02rem;margin-bottom:7px}
.pstep p{font-size:.87rem;color:var(--muted);margin:0}

/* 工厂分栏 */
.fac-grid{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.fac-art img{width:100%;border-radius:var(--radius-lg);box-shadow:var(--sh-2);border:1px solid var(--line)}
.check-list{display:grid;gap:10px;margin:18px 0 22px}
.check-list li{display:flex;gap:10px;align-items:flex-start;font-size:.92rem;color:var(--txt-2)}
.check-list li .ic{color:var(--ok);margin-top:3px;flex:0 0 auto}

/* 客户评价 */
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.quote{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;
  box-shadow:var(--sh-1);margin:0;position:relative}
.quote::before{content:"“";position:absolute;top:6px;right:20px;font-size:4.2rem;color:#e7eef6;
  font-family:Georgia,serif;line-height:1}
.quote blockquote{margin:0 0 16px;font-size:.92rem;color:var(--txt-2);position:relative;z-index:1}
.quote figcaption{font-size:.79rem;color:var(--muted);border-top:1px solid var(--line);padding-top:12px}
.quote figcaption b{display:block;color:var(--navy);font-size:.86rem}
.quote figcaption span{color:var(--accent);font-weight:600}

/* 社交 / 渠道 */
.social-strip{display:grid;grid-template-columns:repeat(auto-fill,minmax(228px,1fr));gap:11px}
.social-strip.small{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:8px;margin:14px 0}
.soc{display:flex;align-items:center;gap:11px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-sm);padding:12px 14px;box-shadow:var(--sh-1);transition:.18s;min-width:0}
.soc:hover{transform:translateY(-2px);border-color:var(--accent);box-shadow:var(--sh-2)}
.soc-ic{width:38px;height:38px;border-radius:10px;display:grid;place-items:center;flex:0 0 auto;
  background:var(--bg-2);color:var(--navy)}
.soc-txt{min-width:0;display:flex;flex-direction:column;line-height:1.28}
.soc-txt b{font-size:.87rem;color:var(--navy);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.soc-txt span{font-size:.74rem;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.soc[data-brand="whatsapp"] .soc-ic{background:#e6f7ee;color:#1fa855}
.soc[data-brand="wechat"] .soc-ic{background:#e8f6ea;color:#2aae67}
.soc[data-brand="facebook"] .soc-ic{background:#e8f0fd;color:#1877f2}
.soc[data-brand="instagram"] .soc-ic{background:#fdeaf3;color:#c13584}
.soc[data-brand="linkedin"] .soc-ic{background:#e7f1f9;color:#0a66c2}
.soc[data-brand="youtube"] .soc-ic{background:#fdeaea;color:#e02020}
.soc[data-brand="tiktok"] .soc-ic{background:#ececf1;color:#111}
.soc[data-brand="telegram"] .soc-ic{background:#e7f3fb;color:#229ed9}
.soc[data-brand="skype"] .soc-ic{background:#e7f4fb;color:#00aff0}
.soc[data-brand="alibaba"] .soc-ic{background:#fff0e8;color:#ff6a00}
.soc[data-brand="made-in-china"] .soc-ic{background:#fdeeee;color:#c8102e}
.soc[data-brand="1688"] .soc-ic{background:#fff1e6;color:#ff6a00}
.soc[data-brand="email"] .soc-ic{background:#eef1f5;color:#41556b}

/* 联系信息卡 */
.cinfo-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:13px;margin:20px 0 26px}
.cinfo{display:flex;gap:13px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:16px 17px;box-shadow:var(--sh-1);align-items:flex-start}
.cinfo-ic{width:40px;height:40px;border-radius:11px;background:var(--accent-l);color:var(--accent);
  display:grid;place-items:center;flex:0 0 auto}
.cinfo b{display:block;font-size:.73rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);
  margin-bottom:3px}
.cinfo span[data-cinfo]{font-size:.92rem;color:var(--navy);font-weight:650;word-break:break-word}

/* ---------------------------------------------------------------- 表单 */
.cta-band{background:linear-gradient(160deg,var(--navy) 0%,var(--navy-2) 100%);color:#fff;padding:74px 0;
  position:relative;overflow:hidden}
.cta-band::after{content:"";position:absolute;right:-140px;top:-140px;width:460px;height:460px;
  border-radius:50%;background:radial-gradient(closest-side,rgba(232,98,12,.30),transparent)}
.cta-band.sm{padding:62px 0}
.cta-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:52px;align-items:start;position:relative;z-index:1}
.cta-band h2{color:#fff}
.cta-band p{color:#c3d4e4}
.cta-txt .social-strip{margin-top:24px}
.cta-txt .soc{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.14)}
.cta-txt .soc:hover{border-color:var(--accent);background:rgba(255,255,255,.1)}
.cta-txt .soc-txt b{color:#fff}
.cta-txt .soc-txt span{color:#9fb8d0}
.cta-txt .soc-ic{background:rgba(255,255,255,.1);color:#fff}

.form-side{background:#fff;border-radius:var(--radius-lg);padding:30px 30px 26px;box-shadow:var(--sh-3);
  color:var(--txt)}
.form-side h3{font-size:1.28rem;margin-bottom:8px}
.form-side>p{font-size:.89rem;color:var(--muted);margin-bottom:20px}
.form-card{display:block}
.fgrid{display:grid;grid-template-columns:1fr 1fr;gap:13px}
.fld{display:flex;flex-direction:column;gap:6px;min-width:0}
.fld-full{grid-column:1/-1}
.fld>span{font-size:.79rem;font-weight:700;color:var(--txt-2);letter-spacing:.02em}
.fld>span i{color:var(--accent);font-style:normal}
.fld input,.fld select,.fld textarea{padding:11px 13px;border:1.4px solid var(--line-2);border-radius:9px;
  background:#fff;font-size:.9rem;transition:.16s;width:100%}
.fld input:focus,.fld select:focus,.fld textarea:focus{outline:0;border-color:var(--accent);
  box-shadow:0 0 0 3.5px rgba(232,98,12,.13)}
.fld textarea{resize:vertical;min-height:92px;font-family:inherit}
.fld input.err,.fld select.err,.fld textarea.err{border-color:#d63b3b;background:#fff6f6}
.fnote{font-size:.75rem;color:var(--muted);margin-top:10px}
.fact{display:flex;flex-direction:column;gap:11px;margin-top:16px;align-items:flex-start}
.fprivacy{font-size:.74rem;color:var(--muted);line-height:1.5}
.fout{margin-top:16px}
.fout.ok{background:#eaf7f1;border:1px solid #b9e2d0;color:#0f6a4d;border-radius:11px;padding:15px 17px;font-size:.9rem}
.fout.bad{background:#fff6ec;border:1px solid #f6d3ad;color:#8f4d00;border-radius:11px;padding:15px 17px;font-size:.9rem}
.fout h4{margin:0 0 8px;font-size:.95rem;color:inherit}
.fout pre{margin:0 0 12px;padding:13px;background:rgba(255,255,255,.75);border-radius:8px;
  font-family:var(--mono);font-size:.78rem;line-height:1.6;white-space:pre-wrap;word-break:break-word;
  max-height:250px;overflow:auto;color:var(--txt)}
.fout .btn{margin-right:8px;margin-top:4px}

/* ---------------------------------------------------------------- 页面头 */
.phead{background:linear-gradient(180deg,#fff,#f2f7fb);border-bottom:1px solid var(--line);padding:38px 0 46px}
.bc{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:.81rem;color:var(--muted);margin-bottom:16px}
.bc a{color:var(--muted)}
.bc a:hover{color:var(--accent)}
.bc-sep{opacity:.5}
.bc [aria-current]{color:var(--navy);font-weight:650}
.phead h1{margin-bottom:14px}
.phead-lead{font-size:1rem;color:var(--txt-2);max-width:74ch;margin:0}
.phead-ic{width:58px;height:58px;border-radius:15px;background:#fff;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--navy-3);box-shadow:var(--sh-1);margin-bottom:16px}
.phead-flex{display:flex;gap:22px;align-items:flex-start}
.cat-hero{font-size:.95rem;color:var(--txt-2);max-width:92ch;margin:20px 0 26px;line-height:1.78}
.cat-meta{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:8px}
.cat-meta>div{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:15px 17px;box-shadow:var(--sh-1)}
.cat-meta b{display:block;font-size:1.03rem;color:var(--navy);margin-bottom:2px}
.cat-meta span{font-size:.74rem;color:var(--muted);letter-spacing:.05em;text-transform:uppercase}

/* ---------------------------------------------------------------- 表格 */
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff;
  box-shadow:var(--sh-1)}
.spec-tbl{font-size:.87rem;min-width:520px}
.spec-tbl th{background:var(--navy);color:#fff;text-align:left;padding:13px 16px;font-size:.79rem;
  letter-spacing:.05em;text-transform:uppercase;font-weight:700;white-space:nowrap}
.spec-tbl td{padding:12px 16px;border-top:1px solid var(--line);color:var(--txt-2);vertical-align:top}
.spec-tbl tbody tr:nth-child(even){background:var(--bg)}
.spec-tbl td b{color:var(--navy)}

/* ---------------------------------------------------------------- 两栏 / 关于 / 质量 */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:46px;align-items:start}
.about-grid{display:grid;grid-template-columns:1fr 340px;gap:48px;align-items:start}
.ab-block{margin-bottom:34px}
.ab-block h2{font-size:1.3rem;margin-bottom:10px}
.ab-block p{color:var(--txt-2);font-size:.95rem;margin:0}
.about-side{display:grid;gap:16px;position:sticky;top:calc(var(--hdr) + 20px)}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;
  box-shadow:var(--sh-1)}
.side-card h3{font-size:1rem;margin-bottom:14px}
.kv{display:grid;gap:11px}
.kv li{display:flex;flex-direction:column;gap:2px;padding-bottom:11px;border-bottom:1px dashed var(--line)}
.kv li:last-child{border-bottom:0;padding-bottom:0}
.kv b{font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.kv span{font-size:.88rem;color:var(--navy);font-weight:650}
.q-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.q-block{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 26px;
  box-shadow:var(--sh-1)}
.q-block h2{font-size:1.14rem;margin-bottom:10px}
.q-block p{font-size:.9rem;color:var(--txt-2);margin-bottom:4px}
.q-block .check-list{margin:16px 0 0}
.q-block .check-list li{font-size:.85rem}
.notice{display:flex;gap:14px;background:#fff9f2;border:1px solid #f5d9b8;border-left:4px solid var(--accent);
  border-radius:var(--radius-sm);padding:20px 22px;color:#7a4a10;align-items:flex-start}
.notice .ic{color:var(--accent);margin-top:2px;flex:0 0 auto}
.notice p{margin:0;font-size:.9rem;line-height:1.7}

/* 流程步骤（工厂页） */
.fsteps{display:grid;gap:16px}
.fstep{display:flex;gap:22px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 26px;box-shadow:var(--sh-1);transition:.2s}
.fstep:hover{transform:translateX(4px);box-shadow:var(--sh-2);border-color:#cfdcea}
.fstep-n{flex:0 0 auto;font-family:var(--mono);font-size:1.5rem;font-weight:700;color:#c8d6e4;line-height:1}
.fstep h3{font-size:1.04rem;margin-bottom:7px}
.fstep p{margin:0;font-size:.89rem;color:var(--muted)}
.cap-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:18px 0 22px}
.cap-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);padding:14px 16px}
.cap-item span{display:block;font-size:.74rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.cap-item b{font-size:1.1rem;color:var(--navy)}
.packshot{border-radius:var(--radius);border:1px solid var(--line);margin-top:18px;box-shadow:var(--sh-1)}
.gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.gitem{margin:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--sh-1)}
.gitem img{width:100%;aspect-ratio:3/2;object-fit:cover}
.gitem figcaption{padding:11px 14px;font-size:.8rem;color:var(--muted);font-weight:600}

/* ---------------------------------------------------------------- FAQ */
.faq-wrap{max-width:900px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);margin-bottom:12px;
  box-shadow:var(--sh-1);overflow:hidden}
.faq-item summary{display:flex;align-items:center;gap:14px;padding:19px 22px;cursor:pointer;
  list-style:none;font-weight:650}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary h2{font-size:1rem;margin:0;flex:1}
.faq-ic{flex:0 0 auto;color:var(--accent);transition:transform .22s}
.faq-item[open] .faq-ic{transform:rotate(180deg)}
.faq-item[open] summary{background:var(--bg)}
.faq-a{padding:4px 22px 22px;border-top:1px solid var(--line)}
.faq-a p{margin:16px 0 0;font-size:.92rem;color:var(--txt-2);line-height:1.78}
.faq-cta{margin-top:34px;background:var(--navy);color:#fff;border-radius:var(--radius-lg);padding:34px;
  text-align:center}
.faq-cta h2{color:#fff;font-size:1.3rem}
.faq-cta p{color:#c3d4e4;font-size:.92rem;margin-bottom:20px}

/* ---------------------------------------------------------------- 联系页 */
.contact-grid{display:grid;grid-template-columns:1fr 1.06fr;gap:48px;align-items:start}
.contact-left h2,.contact-right h2{font-size:1.24rem;margin:0 0 16px}
.contact-left h2+.muted,.contact-left .social-strip+h2{margin-top:34px}
.contact-left h2:not(:first-child){margin-top:34px}
.contact-left .side-card{margin-top:18px}
.contact-right .form-card{margin-bottom:20px}
.addr-blk{display:flex;flex-direction:column;gap:6px;font-size:.9rem;color:var(--txt-2)}
.addr-blk b{color:var(--navy);font-size:.96rem}

/* ---------------------------------------------------------------- 页脚 */
.ftr{background:var(--navy);color:#a9bfd4;font-size:.88rem;padding-top:60px}
.ftr-top{border-bottom:1px solid rgba(255,255,255,.1);padding-bottom:44px}
.ftr-grid{display:grid;grid-template-columns:1.5fr .8fr .8fr 1fr;gap:40px}
.ftr-col h4{color:#fff;font-size:.86rem;letter-spacing:.09em;text-transform:uppercase;margin-bottom:16px}
.ftr-col ul{display:grid;gap:9px}
.ftr-col a{color:#a9bfd4;font-size:.86rem}
.ftr-col a:hover{color:#fff}
.ftr-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;letter-spacing:.05em;
  margin-bottom:16px;font-size:1rem}
.ftr-brand .ic{color:var(--accent)}
.ftr-about p{color:#8fa8c0;font-size:.85rem;line-height:1.72;margin-bottom:6px}
.ftr-contact{display:grid;gap:12px}
.ftr-contact li{display:flex;gap:10px;font-size:.85rem;line-height:1.5;align-items:flex-start}
.ftr-contact .ic{color:var(--accent);margin-top:3px;flex:0 0 auto}
.ftr-contact a,.ftr-contact span{color:#c3d4e4;word-break:break-word}
.ftr-channels{padding:30px 0;border-bottom:1px solid rgba(255,255,255,.1)}
.ftr-channels h4{color:#fff;font-size:.86rem;letter-spacing:.09em;text-transform:uppercase;margin-bottom:16px}
.ftr .soc{background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.12)}
.ftr .soc:hover{border-color:var(--accent);background:rgba(255,255,255,.1)}
.ftr .soc-txt b{color:#fff}
.ftr .soc-txt span{color:#8fa8c0}
.ftr .soc-ic{background:rgba(255,255,255,.1);color:#fff}
.ftr-bot{padding:26px 0 40px}
.ftr-cpr{color:#fff;font-weight:650;font-size:.85rem;margin-bottom:12px}
.ftr-dis{color:#7b93ab;font-size:.76rem;line-height:1.72;max-width:106ch;margin-bottom:12px}
.ftr-note{color:#7b93ab;font-size:.76rem;margin:0}
.fb-box{margin-top:6px}
.fb-box .fb-page-wrap{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--radius-sm);padding:12px;margin-top:12px;overflow:hidden}
.fb-page-wrap iframe{border:0;border-radius:8px;background:#fff;display:block}

/* ---------------------------------------------------------------- 浮动元素 */
.float{position:fixed;right:18px;bottom:96px;z-index:110;display:flex;flex-direction:column;gap:11px}
.fbtn{width:54px;height:54px;border-radius:50%;border:0;display:grid;place-items:center;cursor:pointer;
  box-shadow:var(--sh-2);transition:.2s;position:relative;color:#fff;text-decoration:none}
.fbtn:hover{transform:scale(1.07);box-shadow:var(--sh-3)}
.fbtn-wa{background:#25d366}
.fbtn-wx{background:#2aae67}
.fbtn-q{background:var(--accent)}
.fbtn .tip{position:absolute;right:64px;top:50%;transform:translateY(-50%) translateX(6px);background:var(--navy);
  color:#fff;font-size:.78rem;font-weight:650;padding:7px 12px;border-radius:8px;white-space:nowrap;
  opacity:0;pointer-events:none;transition:.2s}
.fbtn:hover .tip{opacity:1;transform:translateY(-50%) translateX(0)}
.totop{position:fixed;right:18px;bottom:26px;z-index:110;width:44px;height:44px;border-radius:50%;
  border:1px solid var(--line);background:#fff;color:var(--navy);cursor:pointer;display:grid;
  place-items:center;box-shadow:var(--sh-2);opacity:0;visibility:hidden;transition:.24s}
.totop.on{opacity:1;visibility:visible}
.totop:hover{background:var(--navy);color:#fff;border-color:var(--navy)}

.wx-modal,.lead-modal{position:fixed;inset:0;z-index:200;background:rgba(10,22,36,.6);
  backdrop-filter:blur(3px);display:grid;place-items:center;padding:22px}
.wx-modal[hidden],.lead-modal[hidden]{display:none}
.wx-in,.lead-in{position:relative;background:#fff;border-radius:var(--radius-lg);padding:32px;
  max-width:420px;width:100%;box-shadow:var(--sh-3);text-align:center;max-height:90vh;overflow:auto}
.lead-in{max-width:560px;text-align:left}
.wx-x{position:absolute;top:12px;right:12px;width:34px;height:34px;border-radius:50%;border:0;
  background:var(--bg-2);color:var(--navy);cursor:pointer;display:grid;place-items:center}
.wx-x:hover{background:var(--accent);color:#fff}
.wx-in h3{margin-bottom:6px}
.wx-in p{font-size:.88rem;color:var(--muted)}
.wx-qr{width:220px;margin:18px auto;border:1px solid var(--line);border-radius:12px;padding:10px;background:#fff}
.wx-id{display:inline-block;font-family:var(--mono);font-size:.9rem;font-weight:700;color:var(--navy);
  background:var(--bg-2);padding:9px 16px;border-radius:8px;margin:6px 0 4px;word-break:break-all}
.lead-in h3{margin-bottom:8px}
.lead-in p.muted{margin-bottom:18px}

/* 分享条 */
.share-row{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-top:14px}
.share-row b{font-size:.8rem;color:var(--muted);font-weight:600}
.sbtn{display:inline-flex;align-items:center;gap:7px;padding:8px 13px;border-radius:20px;
  border:1px solid var(--line-2);background:#fff;font-size:.79rem;font-weight:650;color:var(--txt-2);cursor:pointer}
.sbtn:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-l)}
.sbtn svg{width:15px;height:15px}

/* ---------------------------------------------------------------- 动画 */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .62s cubic-bezier(.22,.7,.3,1),
  transform .62s cubic-bezier(.22,.7,.3,1)}
.reveal.in{opacity:1;transform:none}

/* ------------------------------------------------- 收缩下限（防止横向撑破）
   grid / flex 子项的 min-width 默认是 auto，也就是"不许小于内容最窄宽度"。
   一旦子项里有宽表格或长串数字，子项就不肯收缩，把网格轨道撑得比视口还宽 ——
   手机上的表现是右侧内容被切掉（因为 body 已经 overflow-x:hidden，不会出现滚动条，
   所以只看截图很难发现）。
   这里统一放开收缩下限；宽表格交给它外面的 .tbl-wrap（overflow-x:auto）自己横向滚动。 */
.hero-in>*,.hero-list>*,.stat-in>*,.cat-grid>*,.cat-row>*,.cat-meta>*,
.pgrid>*,.pcard>*,.pcard-spec>*,.why-grid>*,.proc-grid>*,.fac-grid>*,
.check-list>*,.quote-grid>*,.social-strip>*,.soc>*,.cinfo-grid>*,
.cta-grid>*,.fgrid>*,.phead-flex>*,.two-col>*,.contact-grid>*,
.about-grid>*,.about-side>*,.kv>*,.q-grid>*,.fsteps>*,.fstep>*,
.cap-grid>*,.gallery>*,.ftr-grid>*,.ftr-contact>*{min-width:0}
.tbl-wrap{max-width:100%}
.phead-flex>h1,.phead-flex>div{min-width:0;overflow-wrap:break-word}


/* ---------------------------------------------------------------- 响应式 */

/* 1080 及以下：导航改成抽屉。
   7 个主菜单项 + 品牌 + 语言切换 + 报价按钮在 1080 以内排不下，
   如果继续平铺，右端的报价按钮会被视口切掉（看不见也点不到），
   所以从这一档开始就切到汉堡菜单。 */
@media (max-width:1080px){
  .hero-in{grid-template-columns:1fr;gap:34px;padding:52px 0 44px}
  .hero-art{max-width:520px}
  .cat-grid,.why-grid,.proc-grid,.quote-grid{grid-template-columns:repeat(2,1fr)}
  .gallery{grid-template-columns:repeat(2,1fr)}
  .ftr-grid{grid-template-columns:1fr 1fr;gap:32px}
  .about-grid{grid-template-columns:1fr}
  .about-side{position:static;grid-template-columns:1fr 1fr;display:grid}
  .cta-grid{grid-template-columns:1fr;gap:34px}
  .contact-grid{grid-template-columns:1fr;gap:38px}
  .cat-meta{grid-template-columns:repeat(2,1fr)}

  .burger{display:grid}
  /* 关闭态：移出视口的同时设为不可见、不可点、不可聚焦。
     只靠 translateX 隐藏的话，键盘 Tab 仍会跑进隐藏的菜单里。 */
  .nav{position:fixed;top:var(--hdr);left:0;right:0;bottom:0;background:#fff;margin:0;
    padding:18px 22px 90px;overflow-y:auto;
    transform:translateX(100%);visibility:hidden;pointer-events:none;
    transition:transform .28s ease,visibility .28s;
    border-top:1px solid var(--line);box-shadow:none;z-index:115}
  .nav.open{transform:none;visibility:visible;pointer-events:auto;
    box-shadow:0 18px 40px rgba(16,32,50,.14)}
  .nav>ul{flex-direction:column;align-items:stretch;gap:3px}
  .nav>ul>li>a{padding:13px 14px;font-size:.98rem;border-radius:10px}
  /* 抽屉里的二级菜单改回文档流。
     注意不能写 visibility:visible —— visibility 是可继承属性，
     子元素一旦显式设为 visible，就会盖掉父级 .nav 关闭时的 hidden，
     导致菜单关了却仍然"存在"（能被键盘聚焦）。用 inherit 跟随父级。 */
  .sub{position:static;transform:none;opacity:1;visibility:inherit;width:100%;box-shadow:none;
    border:0;padding:4px 0 8px 8px;background:transparent}
  .has-sub>a .car{display:none}
  .sub li a{font-size:.9rem}
  .nav-foot{display:flex;align-items:center;gap:12px;margin-top:22px;padding-top:20px;
    border-top:1px solid var(--line)}
  .hdr-act .hide-sm,.hdr-act .lang-sw{display:none}
}
@media (max-width:900px){
  :root{--hdr:64px}
  .two-col,.fac-grid{grid-template-columns:1fr;gap:34px}
  .quote-grid{grid-template-columns:1fr}
  .fsteps{gap:13px}
}
@media (max-width:680px){
  body{font-size:15.5px}
  .wrap{padding:0 17px}
  .sec{padding:54px 0}
  .stat-in{grid-template-columns:1fr 1fr;gap:14px 0;padding:20px 17px}
  .stat{border-right:0}
  .stat b{font-size:1.45rem}
  .pgrid{grid-template-columns:1fr;gap:16px}
  .cat-grid,.why-grid,.proc-grid,.cinfo-grid,.q-grid,.cap-grid,.about-side{grid-template-columns:1fr}
  .gallery{grid-template-columns:1fr}
  .fgrid{grid-template-columns:1fr}
  .hero-cta .btn{flex:1;justify-content:center}
  .fbar{padding:12px}
  .fsearch{min-width:100%}
  .fsel{min-width:100%}
  .fcount{margin-left:0;width:100%}
  .float{right:13px;bottom:84px;gap:9px}
  .fbtn{width:50px;height:50px}
  .fbtn .tip{display:none}
  .totop{right:13px;bottom:20px}
  .ftr-grid{grid-template-columns:1fr;gap:28px}
  .phead{padding:26px 0 34px}
  .cat-meta{grid-template-columns:1fr 1fr}
  .form-side{padding:22px 18px}
  .wx-in,.lead-in{padding:24px 20px}
  .wx-qr{width:186px}
  .stat-bar.alt .stat-in{grid-template-columns:1fr 1fr}
}

/* 420 及以下：品牌名收一点，避免把汉堡按钮挤出视口右边 */
@media (max-width:420px){
  .hdr-in{gap:12px}
  .brand{flex:1 1 auto;min-width:0;gap:9px}
  .brand-txt{min-width:0}
  .brand-txt b{font-size:.86rem;letter-spacing:.02em;
    white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .brand-txt i{display:none}
  .brand-mark svg{width:22px;height:22px}
  .burger{width:38px;height:38px;flex:0 0 auto}
  .hdr-act{flex:0 0 auto}
}

/* 无障碍：尊重系统"减少动态效果"设置（同时保证无头截图能取到全部内容） */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;
    transition-duration:.001ms!important}
  .reveal{opacity:1!important;transform:none!important}
}
@media print{
  .hdr,.float,.totop,.cta-band,.ftr-channels{display:none}
  body{background:#fff}
}