/* style.css — 页面级样式 · 仅引用 design-tokens.css 变量，禁止硬编码颜色 */

/* ================= Reset & Base ================= */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-body);
  font-size:16px;line-height:1.75;
  color:var(--text);background:var(--bg);
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button{font-family:inherit;background:none;border:none;cursor:pointer;color:inherit}
input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
::selection{background:var(--pri);color:#fff}

.container{max-width:var(--container);margin:0 auto;padding:0 var(--gutter)}
.section{padding:var(--section) 0}
.section-sm{padding:var(--section-sm) 0}
.section--dark{background:var(--pri-dark);color:var(--on-dark)}

/* ================= i18n 双语 ================= */
html[lang="zh"] .i18n .en{display:none}
html[lang="en"] .i18n .zh{display:none}
html[lang="en"] .i18n{letter-spacing:.01em}

/* ================= 排版工具 ================= */
.display{font-family:var(--font-display)}
.mono{font-family:var(--font-mono)}
.center{text-align:center}
.mt-1{margin-top:8px}.mt-2{margin-top:16px}.mt-3{margin-top:24px}.mt-4{margin-top:40px}.mt-5{margin-top:64px}

/* silk 工艺标签：PCBA silkscreen 风格 */
.silk{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.18em;
  color:var(--pri);background:var(--pri-soft);
  border:1px dashed var(--pri);
  padding:6px 14px;border-radius:99px;
  text-transform:uppercase;white-space:nowrap;
}
.section--dark .silk{color:#4fc3ff;background:rgba(11,92,255,.12);border-color:rgba(79,195,255,.4)}
.silk::before{content:"▣";color:var(--teal);font-size:10px}

/* 区块标题 */
.sec-head{max-width:760px;margin:0 auto var(--section-sm);text-align:center}
.sec-head--left{margin:0 0 var(--section-sm);text-align:left}
.sec-title{
  font-family:var(--font-display);font-weight:700;
  font-size:clamp(28px,3.4vw,42px);line-height:1.25;
  margin-top:18px;color:var(--text);letter-spacing:.2px;
}
.sec-title em{font-style:normal;color:var(--pri)}
.section--dark .sec-title{color:var(--on-dark)}
.section--dark .sec-title em{color:#4fc3ff}
.sec-sub{margin-top:16px;color:var(--muted);font-size:17px}
.section--dark .sec-sub{color:var(--on-dark-muted)}

/* ================= 按钮 ================= */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  font-weight:600;font-size:15px;line-height:1;
  padding:15px 28px;border-radius:var(--radius-sm);
  border:1px solid transparent;transition:all var(--dur) var(--ease);
  white-space:nowrap;
}
.btn svg{width:16px;height:16px;flex:none}
.btn-primary{background:var(--pri);color:#fff;box-shadow:var(--shadow-lg)}
.btn-primary:hover{background:var(--pri-deep);transform:translateY(-2px)}
.btn-outline{border-color:var(--border-strong);color:var(--text);background:var(--surface)}
.btn-outline:hover{border-color:var(--pri);color:var(--pri);transform:translateY(-2px)}
.btn-ghost-dark{border-color:var(--on-dark-border);color:var(--on-dark)}
.btn-ghost-dark:hover{border-color:var(--on-dark-muted);background:rgba(255,255,255,.05)}
.btn-light{background:#fff;color:var(--pri-dark)}
.btn-light:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-sm{padding:10px 18px;font-size:14px}

/* ================= 头部导航 ================= */
main{min-height:62vh}
section[id]{scroll-margin-top:calc(var(--header-h) + 16px)}

.site-header{
  position:fixed;inset:0 0 auto;z-index:100;
  transition:background var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.site-header.scrolled{background:rgba(255,255,255,.94);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:var(--shadow-sm)}

/* 顶部工具条 */
.topbar{height:var(--topbar-h);background:var(--pri-dark);color:var(--on-dark-muted);
  overflow:hidden;transition:height var(--dur) var(--ease),opacity var(--dur) var(--ease)}
.site-header.scrolled .topbar{height:0;opacity:0}
.topbar-inner{height:var(--topbar-h);display:flex;align-items:center;justify-content:space-between;gap:20px;font-size:13px}
.topbar-left{display:flex;align-items:center;gap:24px;min-width:0;white-space:nowrap;overflow:hidden}
.topbar-left a{display:inline-flex;align-items:center;gap:7px;color:var(--on-dark-muted);transition:color var(--dur) var(--ease)}
.topbar-left a:hover{color:#fff}
.topbar-left svg{width:13px;height:13px;opacity:.75;flex:none}
.tb-hours{display:inline-flex;align-items:center;gap:7px}
@media (max-width:1080px){ .tb-hours{display:none} }
.topbar-right{display:flex;align-items:center;gap:16px}
.tb-login{display:inline-flex;align-items:center;gap:7px;color:var(--on-dark-muted);border-left:1px solid var(--on-dark-border);padding-left:18px;transition:color var(--dur) var(--ease)}
.tb-login:hover{color:#fff}
.tb-login svg{width:13px;height:13px;opacity:.75}
.topbar .lang-switch{background:transparent;border-color:var(--on-dark-border);color:var(--on-dark);padding:4px 12px;font-size:11px}
.topbar .lang-switch:hover{border-color:var(--teal);color:#fff}

.header-inner{height:var(--nav-h);display:flex;align-items:center;gap:32px}
.brand{display:flex;align-items:center;gap:12px;flex:none}
.brand-mark{width:38px;height:38px;display:block;filter:drop-shadow(var(--shadow-sm))}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-cn{font-weight:800;font-size:19px;letter-spacing:.02em;color:var(--text)}
.brand-en{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.28em;color:var(--muted);text-transform:uppercase}

.main-nav{display:flex;gap:6px;margin-left:auto}
.nav-link{
  position:relative;padding:10px 16px;font-weight:500;font-size:15px;color:var(--muted);
  border-radius:var(--radius-sm);transition:color var(--dur) var(--ease);
}
.nav-link:hover{color:var(--pri)}
.nav-link.active{color:var(--pri);font-weight:600}
.nav-link.active::after{
  content:"";position:absolute;left:16px;right:16px;bottom:2px;height:3px;border-radius:2px;
  background:linear-gradient(90deg,var(--pri),var(--teal));
}

.header-actions{display:flex;align-items:center;gap:12px}
.lang-switch{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 14px;border-radius:99px;border:1px solid var(--border-strong);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;color:var(--text);
  background:var(--surface);transition:all var(--dur) var(--ease);
}
.lang-switch:hover{border-color:var(--pri);color:var(--pri)}
.lang-switch .dot{width:7px;height:7px;border-radius:50%;background:var(--teal)}

.nav-toggle{display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--border-strong);align-items:center;justify-content:center}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--text);position:relative;transition:all var(--dur) var(--ease)}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:20px;height:2px;background:var(--text);transition:all var(--dur) var(--ease)}
.nav-toggle span::before{top:-6px}.nav-toggle span::after{top:6px}
.nav-toggle.open span{background:transparent}
.nav-toggle.open span::before{top:0;transform:rotate(45deg)}
.nav-toggle.open span::after{top:0;transform:rotate(-45deg)}

/* ================= Hero ================= */
.hero{
  position:relative;padding:calc(var(--header-h) + 72px) 0 0;
  background:
    radial-gradient(900px 420px at 82% -10%,rgba(11,92,255,.14),transparent 60%),
    radial-gradient(700px 380px at 8% 20%,rgba(0,166,156,.08),transparent 55%),
    linear-gradient(180deg,var(--pri-soft2),var(--bg) 72%);
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;z-index:0;
  background:url('../img/hero-bg.png') center/cover no-repeat;
  opacity:.3;pointer-events:none;
}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center;padding-bottom:56px}
.hero-title{font-family:var(--font-display);font-weight:700;font-size:clamp(34px,4.6vw,56px);line-height:1.16;letter-spacing:.2px;margin-top:22px}
.hero-title em{font-style:normal;color:var(--pri)}
.hero-sub{margin-top:22px;font-size:18px;color:var(--muted);max-width:520px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-top:34px}
.hero-trust{display:flex;gap:10px;flex-wrap:wrap;margin-top:34px}
.trust-chip{
  display:inline-flex;align-items:center;gap:7px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;
  color:var(--muted);background:var(--surface);border:1px solid var(--border);
  padding:7px 13px;border-radius:99px;
}
.trust-chip .ok{color:var(--teal)}

/* Hero 视觉：PCB 卡 */
.hero-visual{position:relative}
.pcb-card{
  position:relative;border-radius:var(--radius-lg);background:var(--pri-dark);
  padding:18px;box-shadow:var(--shadow-md);overflow:hidden;
}
.pcb-card::after{content:"";position:absolute;inset:0;border-radius:var(--radius-lg);border:1px solid rgba(255,255,255,.06);pointer-events:none}
.pcb-board{
  position:relative;background:#0E2547;border-radius:12px;padding:12px;
  background-image:
    linear-gradient(rgba(79,195,255,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(79,195,255,.06) 1px,transparent 1px);
  background-size:22px 22px;
}
.pcb-photo{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:8px;display:block}
.pcb-chip{
  position:relative;background:#071126;border-radius:8px;padding:18px 14px;
  border:1px solid var(--on-dark-border);
}
.pcb-chip-row{display:flex;justify-content:space-between;align-items:center}
.pcb-chip-label{font-family:var(--font-mono);font-size:11px;letter-spacing:.22em;color:#4fc3ff}
.pcb-chip-model{font-family:var(--font-mono);font-size:11px;color:var(--on-dark-muted)}
.pcb-chip-core{
  display:flex;align-items:center;justify-content:center;gap:14px;
  margin-top:18px;padding:20px 12px;border:1px dashed rgba(79,195,255,.4);border-radius:8px;
}
.core-chip{width:64px;height:64px;background:linear-gradient(135deg,var(--pri),var(--teal));border-radius:10px;position:relative;flex:none}
.core-chip::before{content:"";position:absolute;inset:10px;border-radius:5px;background:#fff}
.core-chip::after{content:"";position:absolute;inset:0;border-radius:10px;background:
  linear-gradient(90deg,transparent 0 6px,var(--pri-dark) 6px 9px,transparent 9px) 0 0/12px 100% no-repeat,
  linear-gradient(0deg,transparent 0 6px,var(--pri-dark) 6px 9px,transparent 9px) 0 0/100% 12px no-repeat}
.core-info{display:flex;flex-direction:column;gap:8px}
.core-line{height:7px;border-radius:4px;background:rgba(255,255,255,.14)}
.core-line.t{width:150px}.core-line.m{width:112px}.core-line.b{width:132px}
.pcb-pads{display:grid;grid-template-columns:repeat(12,1fr);gap:7px;margin-top:18px}
.pad{height:22px;border-radius:4px;background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.06)}
.pad.hot{background:rgba(0,229,207,.35);border-color:rgba(0,229,207,.5)}

/* Hero 浮动标签 */
.fx{position:absolute;z-index:5;display:flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.94);border-radius:12px;box-shadow:var(--shadow-md);
  padding:10px 14px;font-size:13px;font-weight:600;backdrop-filter:blur(6px);
  animation:float 5.5s var(--ease) infinite}
.fx .ic{width:30px;height:30px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-family:var(--font-mono);font-size:13px}
.fx small{display:block;font-weight:400;color:var(--muted);font-size:11px;font-family:var(--font-mono);letter-spacing:.04em}
.fx-1{top:-18px;left:-26px;animation-delay:.2s}
.fx-1 .ic{background:var(--pri-soft);color:var(--pri)}
.fx-2{bottom:26px;right:-22px;animation-delay:1.1s}
.fx-2 .ic{background:var(--teal-soft);color:var(--teal-deep)}
.fx-3{top:38%;right:-34px;animation-delay:2s}
.fx-3 .ic{background:var(--amber-soft);color:#b45309}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}

/* ================= 数据统计条 ================= */
.stats-strip{
  position:relative;z-index:3;margin-top:8px;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);display:grid;grid-template-columns:repeat(4,1fr);
}
.stat{display:flex;flex-direction:column;align-items:center;gap:2px;padding:30px 20px;text-align:center;border-left:1px solid var(--border)}
.stat:first-child{border-left:none}
.stat-num{font-family:var(--font-display);font-weight:700;font-size:clamp(30px,3vw,42px);line-height:1;color:var(--pri)}
.stat-num .unit{font-size:.52em;color:var(--muted);margin-left:2px;font-weight:500}
.stat-num.suffix::after{content:"";display:block;height:0}
.stat-label{margin-top:10px;font-size:13.5px;color:var(--muted);letter-spacing:.02em}

/* ================= 服务卡片 ================= */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.svc-card{
  position:relative;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:32px 28px;overflow:hidden;transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
  display:flex;flex-direction:column;
}
.svc-card::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;
  background:linear-gradient(90deg,var(--pri),var(--teal));opacity:0;transition:opacity var(--dur) var(--ease)}
.svc-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:var(--border-strong)}
.svc-card:hover::before{opacity:1}
.svc-icon{width:56px;height:56px;border-radius:14px;background:var(--pri-soft);color:var(--pri);
  display:flex;align-items:center;justify-content:center;font-family:var(--font-mono);font-size:13px;font-weight:700;letter-spacing:.02em;
  margin-bottom:20px}
.svc-card:nth-child(3n+2) .svc-icon{background:var(--teal-soft);color:var(--teal-deep)}
.svc-card:nth-child(3n+3) .svc-icon{background:var(--amber-soft);color:#b45309}
.svc-title{font-family:var(--font-display);font-size:20px;font-weight:700;color:var(--text)}
.svc-desc{margin-top:10px;color:var(--muted);font-size:14.5px;flex:1}
.svc-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.svc-more{display:inline-flex;align-items:center;gap:6px;margin-top:22px;font-weight:600;font-size:14px;color:var(--pri)}
.svc-more svg{width:15px;height:15px;transition:transform var(--dur) var(--ease)}
.svc-more:hover svg{transform:translateX(4px)}

/* 标签/芯片 */
.tag{display:inline-block;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.04em;
  color:var(--muted);background:var(--bg);border:1px solid var(--border);border-radius:99px;padding:4px 11px}
.tag--pri{color:var(--pri);background:var(--pri-soft);border-color:transparent}

/* ================= 流程步骤 ================= */
.flow{display:grid;grid-template-columns:repeat(6,1fr);gap:0;position:relative}
.flow-step{position:relative;padding:0 14px;text-align:center}
.flow-step::after{
  content:"";position:absolute;top:26px;left:calc(50% + 34px);width:calc(100% - 68px);height:2px;
  background:linear-gradient(90deg,var(--pri),var(--teal));opacity:.35;
}
.flow-step:last-child::after{display:none}
.flow-num{width:52px;height:52px;margin:0 auto;border-radius:50%;background:var(--surface);
  border:2px solid var(--pri);color:var(--pri);font-family:var(--font-display);font-weight:700;font-size:18px;
  display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-sm)}
.flow-step.done .flow-num{background:var(--pri);color:#fff}
.flow-step.done:nth-child(odd) .flow-num{background:var(--teal);border-color:var(--teal)}
.flow-title{margin-top:18px;font-weight:700;font-size:15px}
.flow-sub{margin-top:6px;font-size:12.5px;color:var(--muted);line-height:1.5}

/* ================= 能力规格表 ================= */
.spec-table{width:100%;border-collapse:collapse;background:var(--surface);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm)}
.spec-table th,.spec-table td{padding:16px 20px;text-align:left;border-bottom:1px solid var(--border);font-size:15px}
.spec-table thead th{background:var(--pri-dark);color:var(--on-dark);font-family:var(--font-display);font-size:14px;letter-spacing:.08em;text-transform:uppercase;font-weight:600}
.spec-table tbody tr:last-child td{border-bottom:none}
.spec-table tbody tr{transition:background var(--dur) var(--ease)}
.spec-table tbody tr:hover{background:var(--pri-soft2)}
.spec-table .k{font-family:var(--font-mono);font-size:13px;color:var(--muted)}
.spec-table .v{font-weight:600;font-family:var(--font-display)}

/* 能力点对（亮点卡片） */
.cap-pts{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.cap-pt{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:26px 22px;transition:all var(--dur) var(--ease)}
.cap-pt:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--border-strong)}
.cap-pt .big{font-family:var(--font-display);font-weight:700;font-size:32px;color:var(--pri);line-height:1}
.cap-pt .big small{font-size:15px;color:var(--muted);font-weight:500}
.cap-pt .lab{margin-top:10px;font-weight:600;font-size:14.5px}
.cap-pt .sub{margin-top:4px;font-size:12.5px;color:var(--muted)}

/* ================= 行业网格 ================= */
.ind-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.ind-card{position:relative;border-radius:var(--radius);overflow:hidden;background:var(--surface);border:1px solid var(--border);
  display:flex;flex-direction:column;transition:all var(--dur) var(--ease)}
.ind-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--border-strong)}
.ind-img{width:100%;aspect-ratio:4/3;object-fit:cover;display:block;background:var(--pri-soft2)}
.ind-body{display:flex;align-items:center;gap:14px;padding:20px 20px 22px}
.ind-ic{width:46px;height:46px;border-radius:12px;background:var(--pri-soft);color:var(--pri);display:flex;align-items:center;justify-content:center;font-family:var(--font-mono);font-size:16px;font-weight:700;flex:none}
.ind-card:nth-child(3n+2) .ind-ic{background:var(--teal-soft);color:var(--teal-deep)}
.ind-card:nth-child(3n+3) .ind-ic{background:var(--amber-soft);color:#b45309}
.ind-name{font-weight:700;font-size:15.5px}
.ind-desc{margin-top:2px;font-size:12.5px;color:var(--muted)}

/* ================= 深色区块 / 蓝图网格 ================= */
.section--dark{position:relative;overflow:hidden}
.section--dark .bg-grid{position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(79,195,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(79,195,255,.05) 1px,transparent 1px);
  background-size:44px 44px}
.section--dark .container{position:relative;z-index:2}
.glow{position:absolute;border-radius:50%;filter:blur(80px);pointer-events:none;opacity:.5}
.glow-blue{background:rgba(11,92,255,.35);width:420px;height:420px;top:-120px;right:-80px}
.glow-teal{background:rgba(0,166,156,.28);width:360px;height:360px;bottom:-140px;left:-100px}

/* 资质徽章带 */
.cert-strip{display:flex;justify-content:center;flex-wrap:wrap;gap:14px}
.cert-badge{display:inline-flex;align-items:center;gap:10px;background:rgba(255,255,255,.05);
  border:1px solid var(--on-dark-border);border-radius:12px;padding:12px 20px;
  font-family:var(--font-display);font-weight:600;letter-spacing:.05em;color:var(--on-dark)}
.cert-badge .cb{width:26px;height:26px;border-radius:7px;background:linear-gradient(135deg,var(--pri),var(--teal));display:flex;align-items:center;justify-content:center;font-family:var(--font-mono);font-size:11px;color:#fff}

/* ================= CTA 横幅 ================= */
.cta-band{position:relative;overflow:hidden;border-radius:var(--radius-lg);
  background:
    linear-gradient(120deg,rgba(10,25,48,.9),rgba(11,92,255,.82) 70%),
    url('../img/cta-bg.png') center/cover no-repeat;
  padding:64px 56px;display:flex;align-items:center;justify-content:space-between;gap:40px;color:#fff}
.cta-band::before{content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:30px 30px;pointer-events:none}
.cta-band .glow{background:rgba(0,229,207,.25);width:320px;height:320px;top:-140px;right:-80px;filter:blur(70px)}
.cta-title{font-family:var(--font-display);font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.3;position:relative;z-index:2}
.cta-sub{margin-top:10px;color:rgba(255,255,255,.75);font-size:15.5px;position:relative;z-index:2}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:2;flex:none}
.cta-actions .btn-line{display:inline-flex;align-items:center;gap:10px;padding:15px 28px;border-radius:var(--radius-sm);border:1px solid rgba(255,255,255,.35);color:#fff;font-weight:600;transition:all var(--dur) var(--ease)}
.cta-actions .btn-line:hover{background:rgba(255,255,255,.1)}

/* ================= 资质卡片（quality） ================= */
.cert-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:30px 26px;transition:all var(--dur) var(--ease)}
.cert-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px)}
.cert-name{display:flex;align-items:center;gap:12px;font-family:var(--font-display);font-weight:700;font-size:19px}
.cert-name .ic{width:40px;height:40px;border-radius:11px;background:var(--pri-soft);color:var(--pri);display:flex;align-items:center;justify-content:center;font-family:var(--font-mono);font-size:14px;font-weight:700;flex:none}
.cert-desc{margin-top:12px;color:var(--muted);font-size:14px}

/* 质检流程 timeline */
.qa-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.qa-step{position:relative;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:26px 22px}
.qa-step .qs-num{font-family:var(--font-mono);font-size:13px;color:var(--teal-deep);letter-spacing:.1em}
.qa-step .qs-title{margin-top:8px;font-weight:700;font-size:16px}
.qa-step .qs-desc{margin-top:8px;font-size:13.5px;color:var(--muted)}

/* 检验现场图集 */
.qc-gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.qc-fig{position:relative;border-radius:var(--radius);overflow:hidden;background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow-sm)}
.qc-fig img{width:100%;aspect-ratio:4/3;object-fit:cover;display:block}
.qc-fig figcaption{position:absolute;left:0;right:0;bottom:0;padding:34px 16px 14px;
  background:linear-gradient(transparent,rgba(10,25,48,.82));color:#fff}
.qc-fig b{font-family:var(--font-mono);font-size:12.5px;letter-spacing:.06em}

/* ================= FAQ 手风琴 ================= */
.faq-list{max-width:820px;margin:0 auto}
.faq-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:14px;overflow:hidden;transition:box-shadow var(--dur) var(--ease)}
.faq-item.open{box-shadow:var(--shadow-md);border-color:var(--border-strong)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 26px;text-align:left;font-weight:600;font-size:16.5px;color:var(--text)}
.faq-q .plus{flex:none;width:28px;height:28px;border-radius:8px;background:var(--pri-soft);color:var(--pri);display:flex;align-items:center;justify-content:center;font-size:18px;transition:transform var(--dur) var(--ease)}
.faq-item.open .plus{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s var(--ease)}
.faq-a-inner{padding:0 26px 24px;color:var(--muted);font-size:15px;line-height:1.8}

/* ================= 联系表单 ================= */
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:40px;align-items:start}
.form-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:40px 36px;box-shadow:var(--shadow-sm)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{margin-bottom:18px}
.field label{display:block;font-weight:600;font-size:14px;margin-bottom:8px}
.field .req{color:var(--danger)}
.field input,.field select,.field textarea{
  width:100%;padding:13px 15px;border:1px solid var(--border-strong);border-radius:var(--radius-sm);
  background:var(--bg);transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);outline:none;
}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--pri);box-shadow:0 0 0 3px rgba(11,92,255,.14);background:var(--surface)}
.field textarea{resize:vertical;min-height:130px}
.form-note{font-size:12.5px;color:var(--muted);margin-top:6px}
.upload-box{border:1.5px dashed var(--border-strong);border-radius:var(--radius-sm);padding:22px;text-align:center;color:var(--muted);cursor:pointer;transition:all var(--dur) var(--ease);font-size:13.5px}
.upload-box:hover{border-color:var(--pri);color:var(--pri);background:var(--pri-soft2)}
.upload-box .up-ic{font-size:22px;margin-bottom:6px}

.info-card{background:var(--pri-dark);color:var(--on-dark);border-radius:var(--radius-lg);padding:36px 32px;position:relative;overflow:hidden}
.info-card::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(79,195,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(79,195,255,.06) 1px,transparent 1px);background-size:34px 34px;pointer-events:none}
.info-card .inner{position:relative;z-index:2}
.info-title{font-family:var(--font-display);font-size:22px;font-weight:700}
.info-list{margin-top:24px;display:flex;flex-direction:column;gap:20px}
.info-item{display:flex;gap:16px}
.info-item .ii{width:42px;height:42px;border-radius:11px;background:rgba(11,92,255,.25);color:#4fc3ff;display:flex;align-items:center;justify-content:center;font-family:var(--font-mono);font-size:15px;flex:none}
.info-item b{display:block;font-size:15px}
.info-item span{font-size:13.5px;color:var(--on-dark-muted);display:block;margin-top:2px}
.resp-note{margin-top:26px;padding:16px 18px;border:1px solid var(--on-dark-border);border-radius:12px;background:rgba(0,166,156,.12);font-size:13.5px;color:#8ce8df;display:flex;gap:10px;align-items:flex-start}

/* 页面内副 Hero */
.page-hero{padding:calc(var(--header-h) + 84px) 0 64px;background:linear-gradient(180deg,var(--pri-soft2),var(--bg) 78%);position:relative;overflow:hidden}
.page-hero .crumbs{font-family:var(--font-mono);font-size:12.5px;letter-spacing:.1em;color:var(--muted)}
.page-hero .crumbs a{color:var(--pri)}
.page-hero h1{font-family:var(--font-display);font-weight:700;font-size:clamp(32px,4vw,48px);line-height:1.2;margin-top:16px;letter-spacing:.2px}
.page-hero h1 em{font-style:normal;color:var(--pri)}
.page-hero .lead{margin-top:16px;color:var(--muted);font-size:17px;max-width:680px}

/* ================= 页脚 ================= */
.site-footer{background:var(--pri-ink);color:var(--on-dark);margin-top:0}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:48px;padding:72px 0 48px}
.footer-brand .brand-cn{color:#fff}
.footer-about{margin-top:18px;font-size:14px;color:var(--on-dark-muted);max-width:300px;line-height:1.8}
.footer-social{display:flex;gap:10px;margin-top:22px}
.footer-social a{width:38px;height:38px;border-radius:10px;border:1px solid var(--on-dark-border);display:flex;align-items:center;justify-content:center;color:var(--on-dark-muted);transition:all var(--dur) var(--ease);font-family:var(--font-mono);font-size:12px}
.footer-social a:hover{border-color:var(--pri);color:#fff;background:rgba(11,92,255,.2)}
.footer-col h4{font-family:var(--font-display);font-size:15px;letter-spacing:.1em;text-transform:uppercase;color:var(--on-dark);margin-bottom:20px}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{color:var(--on-dark-muted);font-size:14.5px;transition:color var(--dur) var(--ease)}
.footer-col a:hover{color:#fff}
.footer-contact li{display:flex;gap:12px;color:var(--on-dark-muted);font-size:14.5px;margin-bottom:14px}
.footer-contact .fc{color:#4fc3ff;font-family:var(--font-mono);font-size:12px;flex:none;margin-top:3px}
.footer-bottom{border-top:1px solid var(--on-dark-border);padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}
.footer-bottom p{font-size:13px;color:var(--on-dark-muted)}
.footer-bottom .fb-links{display:flex;gap:22px}
.footer-bottom .fb-links a{font-size:13px;color:var(--on-dark-muted)}
.footer-bottom .fb-links a:hover{color:#fff}

/* 页尾订阅区 */
.footer-cta{display:flex;align-items:center;justify-content:space-between;gap:32px;padding:40px 0;border-bottom:1px solid var(--on-dark-border);flex-wrap:wrap}
.footer-cta h3{font-family:var(--font-display);font-size:20px;color:#fff;line-height:1.4}
.footer-cta p{color:var(--on-dark-muted);font-size:14px;margin-top:6px}
.news-form{display:flex;gap:10px;flex:none;flex-wrap:wrap}
.news-form input{width:280px;padding:12px 16px;border-radius:10px;border:1px solid var(--on-dark-border);background:rgba(255,255,255,.06);color:#fff;outline:none;transition:border-color var(--dur) var(--ease)}
.news-form input::placeholder{color:var(--on-dark-muted)}
.news-form input:focus{border-color:var(--pri)}
.news-form button{padding:12px 24px;border-radius:10px;background:var(--pri);color:#fff;font-weight:600;transition:background var(--dur) var(--ease)}
.news-form button:hover{background:var(--pri-deep)}
.news-msg{margin-top:8px;font-size:13px;color:#8ce8df;width:100%}

/* 页尾认证条 */
.footer-certs{padding:26px 0;border-top:1px solid var(--on-dark-border);display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}
.footer-certs .fc-t{font-family:var(--font-mono);font-size:12px;letter-spacing:.18em;color:var(--on-dark-muted);text-transform:uppercase}

/* 移动抽屉内的语言切换 */
.main-nav .mobile-lang{align-self:flex-start;margin:2px 0 14px;display:none}
@media (max-width:760px){ .main-nav .mobile-lang{display:inline-flex} }

/* 页尾认证徽章 */
.fc-badges{display:flex;flex-wrap:wrap;gap:8px}
.fc-badges span{font-family:var(--font-mono);font-size:11px;letter-spacing:.04em;color:var(--on-dark-muted);border:1px solid var(--on-dark-border);border-radius:8px;padding:7px 11px;transition:all var(--dur) var(--ease)}
.fc-badges span:hover{border-color:var(--teal);color:#fff}

/* 回到顶部 */
.to-top{position:fixed;right:24px;bottom:24px;z-index:110;width:48px;height:48px;border-radius:12px;background:var(--pri);color:#fff;
  display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-lg);
  opacity:0;visibility:hidden;transform:translateY(12px);transition:all var(--dur) var(--ease)}
.to-top.show{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--pri-deep)}
.to-top svg{width:20px;height:20px}

/* Cookie 同意条 */
.cookie-bar{position:fixed;left:0;right:0;bottom:0;z-index:120;background:var(--pri-dark);color:var(--on-dark);
  border-top:1px solid var(--on-dark-border);box-shadow:0 -8px 30px rgba(11,18,32,.28);
  padding:16px 0;transform:translateY(102%);transition:transform .45s var(--ease)}
.cookie-bar.show{transform:none}
.cookie-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.cookie-inner p{font-size:13.5px;color:var(--on-dark-muted);max-width:760px;line-height:1.7}
.cookie-actions{display:flex;gap:10px;flex:none}
.cookie-btn{padding:10px 20px;border-radius:9px;font-weight:600;font-size:14px;transition:all var(--dur) var(--ease)}
.cookie-btn-accept{background:var(--pri);color:#fff}
.cookie-btn-accept:hover{background:var(--pri-deep)}
.cookie-btn-decline{border:1px solid var(--on-dark-border);color:var(--on-dark)}
.cookie-btn-decline:hover{border-color:var(--on-dark-muted)}

/* 无障碍：减少动效 */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
}

/* ================= 动画 ================= */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.08s}.reveal.d2{transition-delay:.16s}.reveal.d3{transition-delay:.24s}.reveal.d4{transition-delay:.32s}

/* 走线装饰（页面装饰 SVG） */
.trace-deco{position:absolute;pointer-events:none;opacity:.5;z-index:0}
.trace-deco svg{width:100%;height:100%}

/* ================= 服务详情页 ================= */
.svc-detail{padding:72px 0;border-top:1px solid var(--border)}
.svc-detail:first-of-type{border-top:none;padding-top:8px}
.svc-detail-grid{display:grid;grid-template-columns:.92fr 1.08fr;gap:56px;align-items:center}
.svc-detail-grid.rev .svc-detail-visual{order:2}
.svc-detail-text .svc-d-title{font-family:var(--font-display);font-weight:700;font-size:clamp(24px,2.6vw,32px);margin-top:16px}
.svc-detail-text .svc-d-desc{margin-top:14px;color:var(--muted);font-size:15.5px}
.feat-list{margin-top:20px;display:flex;flex-direction:column;gap:11px}
.feat-list li{display:flex;gap:11px;align-items:flex-start;font-size:15px;color:var(--text)}
.feat-list .ck{flex:none;width:20px;height:20px;border-radius:6px;background:var(--teal-soft);color:var(--teal-deep);display:flex;align-items:center;justify-content:center;font-size:12px;margin-top:2px}
.svc-detail-text .svc-tags{margin-top:22px}

/* 服务规格卡（视觉） */
.svc-detail-visual{position:relative}
.svc-img{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:var(--radius-lg);display:block;background:var(--pri-soft2)}
.svc-detail-visual .spec-card{margin:-64px 16px 0;position:relative;z-index:2;box-shadow:var(--shadow-lg)}
.spec-card{background:var(--pri-dark);border-radius:var(--radius-lg);padding:14px;box-shadow:var(--shadow-md);position:relative;overflow:hidden}
.spec-card::after{content:"";position:absolute;inset:0;border-radius:var(--radius-lg);border:1px solid rgba(255,255,255,.06);pointer-events:none}
.spec-card .spec-head{display:flex;align-items:center;justify-content:space-between;padding:8px 10px 14px}
.spec-card .spec-head .t{font-family:var(--font-mono);font-size:11px;letter-spacing:.24em;color:#4fc3ff}
.spec-card .spec-head .dots{display:flex;gap:5px}
.spec-card .spec-head .dots i{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.16)}
.spec-card .spec-body{background:#0E2547;border-radius:12px;padding:8px 16px;overflow:hidden;background-image:linear-gradient(rgba(79,195,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(79,195,255,.05) 1px,transparent 1px);background-size:24px 24px}
.spec-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 0;border-bottom:1px dashed rgba(79,195,255,.16)}
.spec-row:last-child{border-bottom:none}
.spec-row .k{font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--on-dark-muted)}
.spec-row .v{font-family:var(--font-display);font-weight:700;font-size:15px;color:var(--on-dark);text-align:right}
.spec-row .v em{font-style:normal;color:#00E5CF}

/* 服务选择指南 */
.offer-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.offer-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:28px 24px;position:relative;transition:all var(--dur) var(--ease)}
.offer-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px)}
.offer-card .oc-tag{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.14em;color:var(--teal-deep);text-transform:uppercase}
.offer-card h3{font-family:var(--font-display);font-size:18px;margin-top:10px}
.offer-card ul{margin-top:14px;display:flex;flex-direction:column;gap:8px}
.offer-card li{font-size:13.5px;color:var(--muted);display:flex;gap:8px}
.offer-card li::before{content:"—";color:var(--pri);flex:none}

/* 参数标签行 */
.param-strip{display:flex;flex-wrap:wrap;gap:12px}
.param-pill{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:14px 18px;display:flex;flex-direction:column;min-width:150px}
.param-pill .pp-k{font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:var(--muted);text-transform:uppercase}
.param-pill .pp-v{font-family:var(--font-display);font-weight:700;font-size:20px;color:var(--pri);margin-top:4px}

/* 服务详情响应式 */
@media (max-width:1080px){
  .svc-detail-grid{grid-template-columns:1fr;gap:36px}
  .svc-detail-grid.rev .svc-detail-visual{order:0}
  .offer-grid{grid-template-columns:1fr}
}

/* ================= 能力页 ================= */
.table-wrap{overflow-x:auto;border-radius:var(--radius);box-shadow:var(--shadow-sm)}
.table-wrap .spec-table{border-radius:0;box-shadow:none}
.sec-cap{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.sec-cap .n{width:32px;height:32px;border-radius:9px;background:var(--pri);color:#fff;display:flex;align-items:center;justify-content:center;font-size:13px;font-family:var(--font-mono);flex:none}
.sec-cap h3{font-family:var(--font-display);font-weight:700;font-size:20px}
.sec-cap .cap-note{font-size:13px;color:var(--muted);margin-left:4px}
.cap-banner{position:relative;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md);margin-bottom:24px}
.cap-banner img{width:100%;aspect-ratio:21/9;object-fit:cover;display:block}
.cap-banner-tag{position:absolute;left:20px;bottom:16px;display:inline-flex;align-items:center;
  font-family:var(--font-mono);font-size:12.5px;letter-spacing:.04em;color:#fff;
  background:rgba(10,25,48,.78);border:1px solid rgba(255,255,255,.22);
  border-radius:99px;padding:9px 18px;backdrop-filter:blur(4px)}
.equip-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.equip-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:all var(--dur) var(--ease)}
.equip-item:hover{box-shadow:var(--shadow-md);transform:translateY(-3px)}
.equip-item .ei-media{width:100%;aspect-ratio:16/9;overflow:hidden;background:var(--pri-soft2)}
.equip-item .ei-media img{width:100%;height:100%;object-fit:cover;display:block}
.equip-item .ei-media--icon{display:flex;align-items:center;justify-content:center;background:
  radial-gradient(320px 120px at 80% -20%,rgba(11,92,255,.25),transparent 60%),
  radial-gradient(240px 100px at 10% 120%,rgba(0,166,156,.2),transparent 55%),
  linear-gradient(160deg,var(--pri-dark),var(--pri-ink))}
.equip-item .ei-big{font-family:var(--font-mono);font-size:40px;font-weight:700;letter-spacing:.06em;color:rgba(79,195,255,.75)}
.equip-item .ei-body{display:flex;gap:16px;align-items:flex-start;padding:20px 22px 24px}
.equip-item .ei-ic{width:46px;height:46px;border-radius:12px;background:var(--pri-soft);color:var(--pri);display:flex;align-items:center;justify-content:center;font-family:var(--font-mono);font-size:12.5px;flex:none;font-weight:700;letter-spacing:.02em}
.equip-item:nth-child(4n+2) .ei-ic,.equip-item:nth-child(4n+3) .ei-ic{background:var(--teal-soft);color:var(--teal-deep)}
.equip-item h4{font-size:16px;font-weight:700}
.equip-item .ei-spec{margin-top:5px;font-size:13px;color:var(--muted);font-family:var(--font-mono);letter-spacing:.02em;line-height:1.6}

/* ================= 响应式 ================= */
@media (max-width:1080px){
  .hero-grid{grid-template-columns:1fr;gap:64px}
  .hero-visual{max-width:560px;margin:0 auto}
  .fx-1{left:-8px}.fx-2{right:-8px}.fx-3{right:6px}
  .flow{grid-template-columns:repeat(3,1fr);gap:34px 0}
  .flow-step::after{display:none}
  .svc-grid{grid-template-columns:repeat(2,1fr)}
  .cap-pts{grid-template-columns:repeat(2,1fr)}
  .ind-grid{grid-template-columns:repeat(2,1fr)}
  .qa-steps{grid-template-columns:repeat(2,1fr)}
  .qc-gallery{grid-template-columns:repeat(2,1fr)}
  .footer-top{grid-template-columns:1fr 1fr;gap:40px}
  .contact-grid{grid-template-columns:1fr}
}
@media (max-width:760px){
  :root{--section:72px;--header-h:72px}
  .topbar{display:none}
  .main-nav{
    position:fixed;top:var(--header-h);left:0;right:0;bottom:0;
    background:rgba(255,255,255,.98);flex-direction:column;gap:4px;padding:20px;
    transform:translateX(100%);transition:transform .32s var(--ease);margin:0;
  }
  .main-nav.open{transform:none}
  .nav-link{padding:16px;font-size:17px;border-bottom:1px solid var(--border);border-radius:0}
  .nav-toggle{display:flex}
  .header-actions .btn{display:none}
  .stats-strip{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(3){border-left:none}
  .stat{padding:22px 12px}
  .svc-grid{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr 1fr}
  .cap-pts{grid-template-columns:1fr 1fr}
  .ind-grid{grid-template-columns:1fr 1fr}
  .qa-steps{grid-template-columns:1fr}
  .qc-gallery{grid-template-columns:1fr}
  .cta-band{flex-direction:column;padding:48px 30px;text-align:center}
  .form-row{grid-template-columns:1fr}
  .form-card{padding:28px 22px}
  .footer-top{grid-template-columns:1fr}
  .hero{padding-top:calc(var(--header-h) + 48px)}
  .fx-3{display:none}
}
@media (max-width:440px){
  .cap-pts{grid-template-columns:1fr}
  .ind-grid{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr}
  .hero-cta .btn{width:100%}
}