/* =========================================================
   CaiXuan Prototyping — Design System
   玄黑 + 信号橙 · 发丝线网格 · 等宽数据标注 · 图纸角标
   ========================================================= */
@font-face { font-family: "Inter Tight"; src: url(../fonts/inter-tight-latin-wght-normal.woff2) format("woff2"); font-weight: 100 900; font-display: swap; }
@font-face { font-family: "Inter"; src: url(../fonts/inter-latin-wght-normal.woff2) format("woff2"); font-weight: 100 900; font-display: swap; }
@font-face { font-family: "JetBrains Mono"; src: url(../fonts/jetbrains-mono-latin-wght-normal.woff2) format("woff2"); font-weight: 100 800; font-display: swap; }

:root {
  --ink: #0B0D10;          /* 玄 */
  --ink-2: #111419;
  --ink-3: #181C22;
  --steel: #2A3038;
  --mist: #8A929C;
  --fog: #B9C0C8;
  --paper: #F2F3F1;
  --paper-2: #E7E9E6;
  --white: #FFFFFF;
  --accent: #FF5B1F;       /* 信号橙 */
  --accent-2: #FF7A45;
  --line-d: rgba(255,255,255,.09);
  --line-d2: rgba(255,255,255,.16);
  --line-l: rgba(11,13,16,.12);
  --line-l2: rgba(11,13,16,.22);
  --toolpath-dim: rgba(255,255,255,.16);
  --f-display: "Inter Tight", "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --f-body: "Inter", "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --f-mono: "JetBrains Mono", "SFMono-Regular", Consolas, "PingFang SC", "Microsoft YaHei", monospace;
  --wrap: 1320px;
  --gut: clamp(20px, 4vw, 56px);
  --r: 2px;
  --ease: cubic-bezier(.2,.7,.1,1);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0; background: var(--ink); color: var(--fog);
  font: 400 16px/1.75 var(--f-body); letter-spacing: .005em;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; padding: 0; }
h1, h2, h3, h4 { font-family: var(--f-display); color: var(--white); margin: 0; font-weight: 600; letter-spacing: -.02em; line-height: 1.12; }
p { margin: 0 0 1em; }
::selection { background: var(--accent); color: #fff; }
.skip { position: absolute; left: -999px; top: 8px; z-index: 100; background: var(--accent); color: #fff; padding: 8px 14px; }
.skip:focus { left: 8px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gut); }
.muted { color: var(--mist); }
.mono { font-family: var(--f-mono); font-feature-settings: "zero" 1; }
.accent { color: var(--accent); }
.eyebrow {
  font: 500 12px/1.4 var(--f-mono); letter-spacing: .14em; text-transform: uppercase;
  color: var(--mist); margin: 0 0 22px; display: flex; align-items: center; gap: 12px;
}
.eyebrow::before { content: ""; width: 8px; height: 8px; background: var(--accent); flex: none; }
.eyebrow.plain::before { display: none; }

/* ---------- 按钮 ---------- */
.btn {
  --h: 54px;
  display: inline-flex; align-items: center; justify-content: center; gap: 14px;
  height: var(--h); padding: 0 26px; border-radius: var(--r);
  font: 600 15px/1 var(--f-body); letter-spacing: .02em; white-space: nowrap;
  transition: background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease), transform .25s var(--ease);
  position: relative;
}
.btn::after { content: "→"; font-family: var(--f-mono); font-weight: 400; transition: transform .3s var(--ease); }
.btn:hover::after { transform: translateX(4px); }
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { background: var(--accent-2); }
.btn-ghost { border: 1px solid var(--line-d2); color: var(--white); }
.btn-ghost:hover { border-color: var(--white); }
.btn-ghost.copy-btn::after { content: "⧉"; }
.light .btn-ghost { border-color: var(--line-l2); color: var(--ink); }
.light .btn-ghost:hover { border-color: var(--ink); }
.btn-sm { --h: 40px; padding: 0 18px; font-size: 14px; }
.btn-sm::after { display: none; }
.link-arrow { font: 500 14px/1 var(--f-mono); letter-spacing: .04em; color: var(--white); display: inline-flex; gap: 10px; align-items: center; border-bottom: 1px solid var(--line-d2); padding-bottom: 6px; transition: border-color .25s; }
.link-arrow::after { content: "→"; transition: transform .3s var(--ease); }
.link-arrow:hover { border-color: var(--accent); }
.link-arrow:hover::after { transform: translateX(4px); }
.light .link-arrow { color: var(--ink); border-color: var(--line-l2); }

/* ---------- Header ---------- */
.site-header { position: fixed; inset: 0 0 auto 0; z-index: 50; transition: background .35s var(--ease), border-color .35s; border-bottom: 1px solid transparent; }
.site-header.is-scrolled, .nav-open .site-header { background: rgba(11,13,16,.86); backdrop-filter: saturate(140%) blur(14px); -webkit-backdrop-filter: saturate(140%) blur(14px); border-color: var(--line-d); }
.header-inner { height: 76px; display: flex; align-items: center; gap: 40px; }
.brand { display: flex; align-items: center; gap: 12px; color: var(--white); flex: none; }
.logo-mark { height: 36px; width: auto; display: block; }
.brand-cn { font: 700 21px/1 var(--f-display); letter-spacing: .06em; }
.lang-en .brand-cn { letter-spacing: -.01em; font-size: 20px; }
.brand-sub { display: flex; flex-direction: column; font: 500 11px/1.25 var(--f-body); color: var(--fog); padding-left: 12px; border-left: 1px solid var(--line-d2); }
.brand-sub em { font: 400 10px/1.3 var(--f-mono); font-style: normal; color: var(--mist); letter-spacing: .04em; }
.main-nav { margin-left: auto; }
.main-nav ul { list-style: none; display: flex; gap: 4px; margin: 0; padding: 0; }
.main-nav a { display: block; padding: 8px 14px; font-size: 14.5px; color: var(--fog); position: relative; transition: color .2s; }
.main-nav a::after { content: ""; position: absolute; left: 14px; right: 14px; bottom: 2px; height: 1px; background: var(--accent); transform: scaleX(0); transform-origin: left; transition: transform .35s var(--ease); }
.main-nav a:hover, .main-nav a.is-active { color: var(--white); }
.main-nav a:hover::after, .main-nav a.is-active::after { transform: scaleX(1); }
.header-actions { display: flex; align-items: center; gap: 14px; }
.lang-switch { font: 500 12px/1 var(--f-mono); letter-spacing: .1em; color: var(--fog); padding: 8px 10px; border: 1px solid var(--line-d2); border-radius: var(--r); }
.lang-switch:hover { color: var(--white); border-color: var(--fog); }
.nav-toggle { display: none; width: 40px; height: 40px; position: relative; }
.nav-toggle span { position: absolute; left: 10px; right: 10px; height: 1.5px; background: var(--white); transition: transform .3s var(--ease); }
.nav-toggle span:first-child { top: 15px; } .nav-toggle span:last-child { top: 23px; }
.nav-open .nav-toggle span:first-child { transform: translateY(4px) rotate(45deg); }
.nav-open .nav-toggle span:last-child { transform: translateY(-4px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero { position: relative; min-height: 100vh; min-height: 100svh; display: flex; align-items: stretch; overflow: hidden; border-bottom: 1px solid var(--line-d); }
.hero::before { /* 暗角 */
  content: ""; position: absolute; inset: 0; pointer-events: none; z-index: 1;
  background: radial-gradient(120% 90% at 75% 45%, transparent 35%, rgba(11,13,16,.85) 100%),
              linear-gradient(90deg, rgba(11,13,16,.96) 0%, rgba(11,13,16,.75) 34%, transparent 62%);
}
.hero-canvas { position: absolute; inset: 0; z-index: 0; }
.hero-canvas canvas { width: 100%; height: 100%; }
.hero-canvas { left: 28%; }
.hero-inner { position: relative; z-index: 2; display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 40px; align-items: end; padding-top: 150px; padding-bottom: 64px; width: 100%; }
.hero-copy { max-width: 760px; align-self: center; }
.hero h1 { font-size: clamp(38px, 4.9vw, 74px); font-weight: 600; letter-spacing: -.035em; line-height: 1.04; margin-bottom: 30px; }
.lang-zh .hero h1 { letter-spacing: -.01em; line-height: 1.14; font-size: clamp(36px, 5.2vw, 74px); font-weight: 700; }
.hero h1 .thin { color: var(--mist); font-weight: 400; display: block; }
.hero .lead { font-size: clamp(16px, 1.3vw, 18.5px); color: var(--fog); max-width: 620px; margin-bottom: 38px; }
.hero .lead strong { color: var(--white); font-weight: 500; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 26px; }
.hero-note { font: 400 12px/1.6 var(--f-mono); color: var(--mist); letter-spacing: .03em; }
.hero-note b { color: var(--fog); font-weight: 500; }

/* HUD 机床读数面板 */
.hud { font-family: var(--f-mono); font-size: 12px; color: var(--fog); border: 1px solid var(--line-d2); background: rgba(11,13,16,.62); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); position: relative; }
.hud::before, .hud::after { content: ""; position: absolute; width: 10px; height: 10px; border: 1px solid var(--accent); }
.hud::before { left: -1px; top: -1px; border-right: 0; border-bottom: 0; }
.hud::after { right: -1px; bottom: -1px; border-left: 0; border-top: 0; }
.hud-head { display: flex; justify-content: space-between; padding: 10px 14px; border-bottom: 1px solid var(--line-d); color: var(--mist); letter-spacing: .08em; font-size: 10.5px; }
.hud-head .live { color: var(--accent); display: inline-flex; gap: 6px; align-items: center; }
.hud-head .live::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); animation: blink 1.4s infinite; }
@keyframes blink { 50% { opacity: .2; } }
.hud-row { display: grid; grid-template-columns: 26px 1fr; padding: 6px 14px; align-items: baseline; }
.hud-row span:first-child { color: var(--mist); }
.hud-row b { font-weight: 500; color: var(--white); text-align: right; font-size: 15px; font-variant-numeric: tabular-nums; }
.hud-sep { border-top: 1px solid var(--line-d); margin: 4px 0; }
.hud-op { padding: 10px 14px; border-top: 1px solid var(--line-d); color: var(--white); font-size: 11.5px; display: flex; justify-content: space-between; gap: 8px; }
.hud-op span:last-child { color: var(--accent); }
.hud-bar { height: 2px; background: var(--line-d); margin: 0 14px 12px; position: relative; overflow: hidden; }
.hud-bar i { position: absolute; inset: 0 auto 0 0; width: var(--p, 0%); background: var(--accent); transition: width .2s linear; }
.hud-foot { padding: 0 14px 12px; font-size: 10px; color: var(--mist); letter-spacing: .04em; }

.hero-scroll { position: absolute; z-index: 2; left: var(--gut); bottom: 22px; font: 400 10.5px/1 var(--f-mono); letter-spacing: .18em; color: var(--mist); display: none; }

/* ---------- 规格数据条 ---------- */
.specbar { border-bottom: 1px solid var(--line-d); background: var(--ink); }
.specbar-grid { display: grid; grid-template-columns: repeat(6, 1fr); }
.spec { padding: 34px 24px 30px; border-left: 1px solid var(--line-d); position: relative; }
.spec:first-child { border-left: 0; padding-left: 0; }
.spec .num { font: 500 clamp(34px, 3.4vw, 50px)/1 var(--f-display); color: var(--white); letter-spacing: -.03em; display: flex; align-items: baseline; gap: 6px; font-variant-numeric: tabular-nums; }
.spec .num small { font: 400 13px/1 var(--f-mono); color: var(--mist); letter-spacing: 0; }
.spec .num.txt { font-size: clamp(26px, 2.4vw, 36px); letter-spacing: -.01em; }
.spec .lbl { margin-top: 14px; font-size: 13.5px; color: var(--fog); line-height: 1.5; }
.spec .lbl em { display: block; font: 400 11px/1.5 var(--f-mono); font-style: normal; color: var(--mist); margin-top: 4px; letter-spacing: .02em; }

/* ---------- 客户跑马灯 ---------- */
.clients { padding: 46px 0 50px; border-bottom: 1px solid var(--line-d); overflow: hidden; }
.clients-head { display: flex; justify-content: space-between; align-items: baseline; gap: 20px; margin-bottom: 26px; }
.clients-head .eyebrow { margin: 0; }
.clients-head p { margin: 0; font: 400 11.5px/1.5 var(--f-mono); color: var(--mist); }
.marquee { display: flex; gap: 0; width: max-content; animation: marquee 60s linear infinite; }
.marquee:hover { animation-play-state: paused; }
.marquee ul { display: flex; list-style: none; margin: 0; padding: 0; }
.marquee li { font: 500 clamp(19px, 1.7vw, 25px)/1 var(--f-display); color: #D9DDE2; white-space: nowrap; padding: 0 34px; display: flex; align-items: center; gap: 34px; letter-spacing: -.01em; }
.marquee li::after { content: ""; width: 5px; height: 5px; background: var(--steel); transform: rotate(45deg); margin-right: -34px; }
.marquee li:hover { color: var(--white); }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- Section 基础 ---------- */
.section { padding: clamp(80px, 10vw, 150px) 0; position: relative; }
.section.light { background: var(--paper); color: #3A4048; }
.section.light h2, .section.light h3, .section.light h4 { color: var(--ink); }
.section.light .eyebrow { color: #6A717A; }
.section.light .muted { color: #6A717A; }
.section.alt { background: var(--ink-2); }
.sec-head { display: grid; grid-template-columns: 1.25fr 1fr; gap: 40px 80px; align-items: end; margin-bottom: clamp(48px, 6vw, 80px); }
.sec-head h2 { font-size: clamp(32px, 3.8vw, 56px); letter-spacing: -.03em; }
.lang-zh .sec-head h2 { letter-spacing: -.005em; line-height: 1.22; font-weight: 700; font-size: clamp(30px, 3.4vw, 50px); }
.sec-head p { margin: 0; font-size: 17px; max-width: 560px; }
.sec-num { font: 500 12px/1 var(--f-mono); color: var(--accent); letter-spacing: .1em; display: block; margin-bottom: 18px; }

/* 图纸角标框 */
.ticks { position: relative; }
.ticks::before, .ticks::after { content: ""; position: absolute; width: 12px; height: 12px; pointer-events: none; border: 1px solid currentColor; opacity: .5; }
.ticks::before { left: -1px; top: -1px; border-right: 0; border-bottom: 0; }
.ticks::after { right: -1px; bottom: -1px; border-left: 0; border-top: 0; }

/* ---------- 服务卡片 ---------- */
.svc-grid { display: grid; grid-template-columns: repeat(6, 1fr); border-top: 1px solid var(--line-l2); border-left: 1px solid var(--line-l2); }
.svc { grid-column: span 2; border-right: 1px solid var(--line-l2); border-bottom: 1px solid var(--line-l2); padding: 34px 32px 36px; display: flex; flex-direction: column; min-height: 360px; position: relative; transition: background .35s var(--ease); color: #3A4048; }
.svc:nth-child(4), .svc:nth-child(5) { grid-column: span 3; }
.svc:hover { background: var(--white); }
.svc .idx { font: 500 12px/1 var(--f-mono); color: #8A9099; letter-spacing: .08em; display: flex; justify-content: space-between; }
.svc .idx b { color: var(--accent); font-weight: 500; }
.svc .icon { width: 64px; height: 64px; margin: 36px 0 30px; color: var(--ink); }
.svc .icon path, .svc .icon circle, .svc .icon rect, .svc .icon line, .svc .icon polyline { vector-effect: non-scaling-stroke; }
.svc h3 { font-size: 23px; margin-bottom: 12px; letter-spacing: -.01em; }
.svc p { font-size: 15px; margin-bottom: 24px; }
.svc .tags { margin-top: auto; display: flex; flex-wrap: wrap; gap: 6px; }
.svc .tags span { font: 400 11.5px/1 var(--f-mono); padding: 7px 9px; border: 1px solid var(--line-l2); color: #5A616A; }
.svc .go { position: absolute; right: 28px; top: 30px; font: 400 18px/1 var(--f-mono); color: var(--ink); transform: translate(-6px, 6px); opacity: 0; transition: all .35s var(--ease); }
.svc:hover .go { opacity: 1; transform: none; color: var(--accent); }
.svc .pct { font: 400 11px/1 var(--f-mono); color: #8A9099; }

/* ---------- 一厂流程 ---------- */
.flow { display: grid; grid-template-columns: repeat(6, 1fr); border-top: 1px solid var(--line-d2); counter-reset: f; }
.flow li { list-style: none; padding: 30px 22px 0 0; position: relative; counter-increment: f; }
.flow li::before { content: ""; position: absolute; top: -5px; left: 0; width: 9px; height: 9px; background: var(--ink-2); border: 1px solid var(--accent); transform: rotate(45deg); }
.flow li.in-house::before { background: var(--accent); }
.flow .t { font: 500 11px/1 var(--f-mono); color: var(--mist); letter-spacing: .1em; margin-bottom: 14px; display: block; }
.flow h4 { font-size: 19px; margin-bottom: 10px; }
.flow p { font-size: 14px; color: var(--mist); margin: 0; }
.flow-wrap { padding: 0; margin: 0; }
.flow-legend { margin-top: 40px; display: flex; gap: 28px; flex-wrap: wrap; font: 400 12px/1.4 var(--f-mono); color: var(--mist); }
.flow-legend span { display: inline-flex; gap: 10px; align-items: center; }
.flow-legend i { width: 9px; height: 9px; border: 1px solid var(--accent); transform: rotate(45deg); }
.flow-legend i.f { background: var(--accent); }

/* ---------- 急件时间轴 ---------- */
.rush { display: grid; grid-template-columns: 1.05fr 1fr; gap: clamp(40px, 6vw, 100px); align-items: start; }
.rush h2 { font-size: clamp(34px, 4vw, 58px); margin-bottom: 26px; letter-spacing: -.02em; }
.lang-zh .rush h2 { line-height: 1.2; font-weight: 700; }
.rush-big { font: 600 clamp(110px, 15vw, 220px)/.86 var(--f-display); letter-spacing: -.06em; color: var(--white); margin: 0 0 14px -6px; }
.lang-zh .rush-big { font-size: clamp(96px, 12vw, 180px); line-height: 1; letter-spacing: -.02em; margin-top: 18px; }
.rush-big span { color: var(--accent); }
.cond { margin-top: 28px; padding: 18px 20px; border: 1px solid var(--line-d2); font-size: 14px; color: var(--fog); display: grid; grid-template-columns: auto 1fr; gap: 14px; }
.cond b { font: 500 11px/1.8 var(--f-mono); color: var(--accent); letter-spacing: .08em; }
.timeline { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--line-d2); }
.timeline li { padding: 0 0 38px 34px; position: relative; }
.timeline li:last-child { padding-bottom: 0; }
.timeline li::before { content: ""; position: absolute; left: -5px; top: 6px; width: 9px; height: 9px; border-radius: 50%; background: var(--ink); border: 1px solid var(--accent); }
.timeline li:last-child::before { background: var(--accent); box-shadow: 0 0 0 6px rgba(255,91,31,.15); }
.timeline .k { font: 500 11.5px/1 var(--f-mono); color: var(--accent); letter-spacing: .1em; display: block; margin-bottom: 10px; }
.timeline h4 { font-size: 21px; margin-bottom: 6px; }
.timeline p { margin: 0; font-size: 15px; color: var(--mist); }

/* ---------- 地缘半径图 ---------- */
.geo { display: grid; grid-template-columns: 1fr 1.1fr; gap: clamp(40px, 6vw, 90px); align-items: center; }
.radar { position: relative; aspect-ratio: 1; width: 100%; max-width: 620px; margin-left: auto; }
.radar svg { width: 100%; height: 100%; overflow: visible; }
.radar .ring { fill: none; stroke: rgba(255,255,255,.12); stroke-dasharray: 2 5; }
.radar .ring.r0 { stroke: rgba(255,91,31,.55); stroke-dasharray: none; }
.radar .ax { stroke: rgba(255,255,255,.07); }
.radar .rl { font: 400 10px var(--f-mono); fill: var(--mist); letter-spacing: .06em; }
.radar .pt circle { fill: var(--ink-2); stroke: var(--white); stroke-width: 1.2; }
.radar .pt text { font: 500 13px var(--f-body); fill: var(--white); }
.radar .pt text.m { font: 400 11px var(--f-mono); fill: var(--accent); }
.radar .pt line { stroke: rgba(255,255,255,.18); }
.radar .core circle.c1 { fill: var(--accent); }
.radar .core circle.c2 { fill: none; stroke: var(--accent); opacity: .5; transform-origin: center; transform-box: fill-box; animation: pulse 2.6s var(--ease) infinite; }
.radar .core text { font: 600 12px var(--f-mono); fill: var(--white); letter-spacing: .08em; }
@keyframes pulse { from { transform: scale(1); opacity: .7; } to { transform: scale(5); opacity: 0; } }
.dt-table { width: 100%; border-collapse: collapse; margin-top: 30px; font-size: 15px; }
.dt-table td { padding: 13px 0; border-bottom: 1px solid var(--line-d); }
.dt-table td:last-child { text-align: right; font-family: var(--f-mono); color: var(--white); font-variant-numeric: tabular-nums; }
.dt-table td:last-child small { color: var(--mist); margin-left: 4px; }
.fineprint { font: 400 11.5px/1.6 var(--f-mono); color: var(--mist); margin-top: 16px; }

/* ---------- 资质 ---------- */
.certs { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.cert { border: 1px solid var(--line-l2); background: var(--white); padding: 36px 36px 30px; color: #3A4048; }
.cert-top { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 34px; gap: 20px; }
.cert-std { font: 600 clamp(34px, 3.4vw, 48px)/1 var(--f-display); color: var(--ink); letter-spacing: -.03em; }
.cert-std small { display: block; font: 400 13px/1.4 var(--f-mono); color: #6A717A; letter-spacing: .02em; margin-top: 10px; }
.seal { width: 64px; height: 64px; flex: none; color: var(--accent); }
.cert dl { margin: 0; display: grid; grid-template-columns: 96px 1fr; border-top: 1px solid var(--line-l); }
.cert dt, .cert dd { margin: 0; padding: 11px 0; border-bottom: 1px solid var(--line-l); font-size: 14px; }
.cert dt { font: 400 12px/1.9 var(--f-mono); color: #7A818A; }
.cert dd { color: var(--ink); }
.cert dd.mono { font-size: 13.5px; letter-spacing: .02em; }
.cert-note { margin-top: 28px; font-size: 14px; color: #5A616A; max-width: 860px; }

/* ---------- 行业 ---------- */
.ind-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line-l2); }
.ind { padding: 30px 30px 34px 0; border-bottom: 1px solid var(--line-l2); }
.ind:not(:nth-child(3n+1)) { padding-left: 30px; border-left: 1px solid var(--line-l2); }
.ind .no { font: 500 11.5px/1 var(--f-mono); color: var(--accent); letter-spacing: .1em; }
.ind h3 { font-size: 22px; margin: 16px 0 12px; }
.ind p { font-size: 14.5px; margin: 0; color: #5A616A; }
.ind .names { margin-top: 16px; font: 400 12.5px/1.8 var(--f-mono); color: #7A818A; }

/* ---------- FAQ ---------- */
.faq { border-top: 1px solid var(--line-l2); }
.faq details { border-bottom: 1px solid var(--line-l2); }
.faq summary { list-style: none; cursor: pointer; padding: 26px 60px 26px 0; position: relative; font: 600 clamp(17px, 1.5vw, 20px)/1.45 var(--f-display); color: var(--ink); letter-spacing: -.005em; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 6px; top: 50%; transform: translateY(-50%); font: 300 28px/1 var(--f-mono); color: var(--accent); transition: transform .3s var(--ease); }
.faq details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq .ans { padding: 0 60px 28px 0; font-size: 16px; color: #3A4048; max-width: 900px; }
.faq .ans p:last-child { margin: 0; }
.section:not(.light) .faq, .section:not(.light) .faq details { border-color: var(--line-d2); }
.section:not(.light) .faq summary { color: var(--white); }
.section:not(.light) .faq .ans { color: var(--fog); }

/* ---------- 子页通用 ---------- */
.page-hero { padding: 180px 0 90px; border-bottom: 1px solid var(--line-d); position: relative; overflow: hidden; }
.page-hero .bg-grid { position: absolute; inset: 0; background-image: linear-gradient(var(--line-d) 1px, transparent 1px), linear-gradient(90deg, var(--line-d) 1px, transparent 1px); background-size: 64px 64px; mask-image: radial-gradient(80% 100% at 80% 0%, #000 0%, transparent 70%); -webkit-mask-image: radial-gradient(80% 100% at 80% 0%, #000 0%, transparent 70%); pointer-events: none; }
.page-hero .wrap { position: relative; }
.crumbs { font: 400 12px/1 var(--f-mono); color: var(--mist); letter-spacing: .06em; margin-bottom: 40px; display: flex; gap: 10px; flex-wrap: wrap; }
.crumbs a:hover { color: var(--white); }
.crumbs span { color: var(--steel); }
.page-hero h1 { font-size: clamp(36px, 5vw, 72px); letter-spacing: -.03em; max-width: 1050px; margin-bottom: 28px; }
.lang-zh .page-hero h1 { letter-spacing: -.005em; line-height: 1.18; font-weight: 700; }
.page-hero .lead { font-size: clamp(16px, 1.3vw, 19px); max-width: 820px; color: var(--fog); margin-bottom: 36px; }
.page-hero .hero-actions { margin: 0; }

.answer { border-left: 2px solid var(--accent); padding: 4px 0 4px 26px; max-width: 980px; font-size: 18px; color: var(--ink); line-height: 1.8; }
.answer .k { display: block; font: 500 11.5px/1 var(--f-mono); letter-spacing: .12em; color: var(--accent); margin-bottom: 12px; }
.section:not(.light) .answer { color: var(--white); }

.two-col { display: grid; grid-template-columns: 340px 1fr; gap: clamp(40px, 7vw, 120px); }
.two-col > aside { position: sticky; top: 110px; align-self: start; }
.two-col > aside h2 { font-size: clamp(26px, 2.4vw, 36px); }
.prose { font-size: 16.5px; max-width: 820px; }
.prose h3 { font-size: 23px; margin: 46px 0 16px; }
.prose h3:first-child { margin-top: 0; }
.prose ul { padding-left: 0; list-style: none; margin: 0 0 1.4em; }
.prose li { padding: 10px 0 10px 26px; position: relative; border-bottom: 1px solid var(--line-l); }
.prose li::before { content: ""; position: absolute; left: 2px; top: 21px; width: 8px; height: 1px; background: var(--accent); }
.section:not(.light) .prose li { border-color: var(--line-d); }
.prose strong { color: var(--ink); font-weight: 600; }
.section:not(.light) .prose strong { color: var(--white); }

.spec-table { width: 100%; border-collapse: collapse; font-size: 15px; }
.spec-table th, .spec-table td { text-align: left; padding: 16px 18px 16px 0; border-bottom: 1px solid var(--line-l); vertical-align: top; }
.spec-table th { font: 400 12px/1.8 var(--f-mono); color: #7A818A; width: 30%; letter-spacing: .04em; font-weight: 400; }
.spec-table td { color: var(--ink); }
.section:not(.light) .spec-table th, .section:not(.light) .spec-table td { border-color: var(--line-d); }
.section:not(.light) .spec-table td { color: var(--white); }
.spec-table .tbc { font: 400 12px var(--f-mono); color: #9AA0A8; }

.related { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 0; border-top: 1px solid var(--line-d2); border-left: 1px solid var(--line-d2); }
.related a { border-right: 1px solid var(--line-d2); border-bottom: 1px solid var(--line-d2); padding: 26px 24px; display: flex; flex-direction: column; gap: 30px; transition: background .3s; }
.related a:hover { background: var(--ink-3); }
.related .n { font: 400 11.5px/1 var(--f-mono); color: var(--mist); letter-spacing: .08em; }
.related b { color: var(--white); font: 600 18px/1.35 var(--f-display); display: flex; justify-content: space-between; gap: 10px; }
.related b::after { content: "→"; font-family: var(--f-mono); color: var(--accent); font-weight: 400; }

/* 客户名单（文字墙） */
.client-wall { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); border-top: 1px solid var(--line-l2); border-left: 1px solid var(--line-l2); }
.client-wall > div { border-right: 1px solid var(--line-l2); border-bottom: 1px solid var(--line-l2); padding: 26px 26px 28px; }
.client-wall h4 { font: 500 11.5px/1 var(--f-mono); color: var(--accent); letter-spacing: .1em; margin-bottom: 18px; }
.client-wall ul { list-style: none; margin: 0; padding: 0; }
.client-wall li { font: 600 18px/1.9 var(--f-display); color: var(--ink); letter-spacing: -.005em; }
.client-wall li small { font: 400 12px var(--f-mono); color: #7A818A; margin-left: 6px; }

/* 联系页 */
.contact-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: clamp(40px, 6vw, 100px); align-items: start; }
.cards { display: grid; gap: 0; border-top: 1px solid var(--line-d2); }
.ccard { display: grid; grid-template-columns: 90px 1fr auto; gap: 18px; align-items: center; padding: 24px 0; border-bottom: 1px solid var(--line-d2); }
.ccard .k { font: 400 12px/1 var(--f-mono); color: var(--mist); letter-spacing: .08em; }
.ccard .v { font: 600 clamp(19px, 1.8vw, 25px)/1.3 var(--f-display); color: var(--white); letter-spacing: -.01em; word-break: break-all; }
.ccard .v small { display: block; font: 400 13px/1.5 var(--f-body); color: var(--mist); letter-spacing: 0; margin-top: 4px; }
.ccard .act { font: 500 12px/1 var(--f-mono); color: var(--accent); letter-spacing: .06em; border: 1px solid rgba(255,91,31,.4); padding: 10px 12px; border-radius: var(--r); white-space: nowrap; }
.ccard .act:hover { background: var(--accent); color: #fff; }
.qform { border: 1px solid var(--line-d2); background: var(--ink-2); padding: clamp(26px, 3vw, 44px); position: relative; scroll-margin-top: 100px; }
.qform h2 { font-size: clamp(26px, 2.4vw, 34px); margin-bottom: 10px; }
.qform .sub { font-size: 14.5px; color: var(--mist); margin-bottom: 30px; }
.fgrid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px 18px; }
.fgrid .full { grid-column: 1 / -1; }
.field label { display: block; font: 400 11.5px/1 var(--f-mono); color: var(--mist); letter-spacing: .08em; margin-bottom: 10px; }
.field input, .field select, .field textarea { width: 100%; background: transparent; border: 0; border-bottom: 1px solid var(--line-d2); color: var(--white); font: 400 16px/1.5 var(--f-body); padding: 8px 0 10px; border-radius: 0; transition: border-color .25s; appearance: none; -webkit-appearance: none; }
.field select { background-image: linear-gradient(45deg, transparent 50%, var(--mist) 50%), linear-gradient(-45deg, transparent 50%, var(--mist) 50%); background-position: right 6px top 18px, right 1px top 18px; background-size: 5px 5px; background-repeat: no-repeat; }
.field select option { background: var(--ink-2); color: var(--white); }
.field textarea { min-height: 96px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--accent); }
.qform .btn { margin-top: 30px; width: 100%; }
.qform .formats { margin-top: 18px; font: 400 11.5px/1.7 var(--f-mono); color: var(--mist); }
.qform .hint { margin-top: 16px; padding: 14px 16px; border: 1px solid rgba(255,91,31,.35); color: var(--fog); font-size: 14px; }

/* ---------- Footer ---------- */
.site-footer { background: var(--ink); border-top: 1px solid var(--line-d); padding-top: clamp(80px, 9vw, 130px); }
.footer-cta { display: grid; grid-template-columns: 1fr auto; gap: 30px 60px; align-items: end; padding-bottom: clamp(60px, 7vw, 100px); border-bottom: 1px solid var(--line-d); }
.footer-cta .eyebrow { grid-column: 1 / -1; margin-bottom: 0; }
.footer-cta h2 { font-size: clamp(32px, 4.4vw, 64px); letter-spacing: -.03em; }
.lang-zh .footer-cta h2 { letter-spacing: -.005em; line-height: 1.22; font-weight: 700; font-size: clamp(30px, 3.8vw, 56px); }
.footer-cta-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.5fr; gap: 40px; padding: 60px 0; }
.footer-grid h3 { font: 500 11.5px/1 var(--f-mono); color: var(--mist); letter-spacing: .14em; text-transform: uppercase; margin-bottom: 22px; }
.footer-grid ul { list-style: none; margin: 0; padding: 0; }
.footer-grid li { padding: 5px 0; font-size: 14.5px; }
.footer-grid a:hover { color: var(--white); }
.footer-brand p { margin: 22px 0 0; font: 400 13px/1.7 var(--f-mono); color: var(--fog); }
.footer-brand p.muted { font-family: var(--f-body); color: var(--mist); margin-top: 8px; }
.footer-contact li { display: grid; grid-template-columns: 52px 1fr; gap: 8px; }
.footer-contact .k { font: 400 12px/2 var(--f-mono); color: var(--mist); }
.footer-contact .copy { text-align: left; border-bottom: 1px dashed var(--mist); line-height: 1.5; justify-self: start; }
.footer-contact .copy:hover { color: var(--white); border-color: var(--accent); }
.footer-legal { border-top: 1px solid var(--line-d); padding: 26px 0 34px; display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; font: 400 11.5px/1.7 var(--f-mono); color: var(--mist); }
.footer-legal p { margin: 0; display: flex; gap: 18px; flex-wrap: wrap; }
.footer-legal a:hover { color: var(--white); }
.todo-icp { opacity: .6; }

/* 悬浮询价 */
.sticky-quote { position: fixed; right: 24px; bottom: 24px; z-index: 40; background: var(--accent); color: #fff; font: 600 14px/1 var(--f-body); padding: 16px 20px; border-radius: var(--r); display: flex; gap: 10px; align-items: center; box-shadow: 0 10px 30px rgba(255,91,31,.28); transform: translateY(120px); transition: transform .45s var(--ease); }
.sticky-quote .dot { width: 7px; height: 7px; border-radius: 50%; background: #fff; animation: blink 1.4s infinite; }
.show-sticky .sticky-quote { transform: none; }
.mbar { display: none; }

.toast { position: fixed; left: 50%; bottom: 96px; transform: translate(-50%, 20px); opacity: 0; z-index: 200; background: var(--white); color: var(--ink); padding: 12px 18px; font-size: 14px; border-radius: var(--r); transition: all .35s var(--ease); box-shadow: 0 10px 40px rgba(0,0,0,.35); max-width: 90vw; }
.toast.in { opacity: 1; transform: translate(-50%, 0); }

/* 进场 */
[data-reveal] { opacity: 0; transform: translateY(26px); transition: opacity .9s var(--ease), transform .9s var(--ease); transition-delay: var(--d, 0s); }
[data-reveal].is-in { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 1180px) {
  .main-nav a { padding: 8px 9px; font-size: 14px; }
  .main-nav a::after { left: 9px; right: 9px; }
  .brand-sub { display: none; }
  .specbar-grid { grid-template-columns: repeat(3, 1fr); }
  .spec:nth-child(4) { border-left: 0; padding-left: 0; }
  .spec:nth-child(n+4) { border-top: 1px solid var(--line-d); }
  .flow { grid-template-columns: repeat(3, 1fr); row-gap: 40px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 960px) {
  .header-inner { height: 64px; }
  .main-nav { position: fixed; inset: 64px 0 auto 0; background: rgba(11,13,16,.97); border-bottom: 1px solid var(--line-d); transform: translateY(-120%); transition: transform .45s var(--ease); margin: 0; }
  .nav-open .main-nav { transform: none; }
  .main-nav ul { flex-direction: column; padding: 14px var(--gut) 26px; }
  .main-nav a { padding: 15px 0; font-size: 17px; border-bottom: 1px solid var(--line-d); }
  .main-nav a::after { display: none; }
  .nav-toggle { display: block; }
  .header-actions { margin-left: auto; }
  .header-actions .btn { display: none; }
  .hero-inner { grid-template-columns: 1fr; padding-top: 120px; }
  .hero-canvas { left: 0; opacity: .55; }
  .hero::before { background: linear-gradient(180deg, rgba(11,13,16,.55) 0%, rgba(11,13,16,.88) 60%, rgba(11,13,16,.98) 100%); }
  .hud { display: none; }
  .sec-head, .rush, .geo, .contact-grid, .two-col { grid-template-columns: 1fr; }
  .two-col > aside { position: static; }
  .svc-grid { grid-template-columns: 1fr 1fr; }
  .svc, .svc:nth-child(4), .svc:nth-child(5) { grid-column: span 1; min-height: 0; }
  .svc:nth-child(5) { grid-column: span 2; }
  .certs { grid-template-columns: 1fr; }
  .ind-grid { grid-template-columns: 1fr 1fr; }
  .ind, .ind:not(:nth-child(3n+1)) { padding: 26px 20px 28px 0; border-left: 0; }
  .ind:nth-child(2n) { padding-left: 20px; border-left: 1px solid var(--line-l2); }
  .radar { margin: 0 auto; }
  .footer-cta { grid-template-columns: 1fr; }
  .sticky-quote { display: none; }
  .mbar { display: grid; grid-template-columns: 1fr 1fr 1.3fr; position: fixed; left: 0; right: 0; bottom: 0; z-index: 45; background: rgba(11,13,16,.96); border-top: 1px solid var(--line-d2); backdrop-filter: blur(10px); padding-bottom: env(safe-area-inset-bottom); }
  .mbar a, .mbar button { height: 56px; display: flex; align-items: center; justify-content: center; gap: 8px; font-size: 14.5px; color: var(--white); border-right: 1px solid var(--line-d); }
  .mbar .q { background: var(--accent); border: 0; font-weight: 600; }
  body { padding-bottom: 56px; }
}
@media (max-width: 640px) {
  .specbar-grid { grid-template-columns: 1fr 1fr; }
  .spec, .spec:first-child, .spec:nth-child(4) { padding: 24px 0 22px; border-left: 0; }
  .spec:nth-child(2n) { padding-left: 18px; border-left: 1px solid var(--line-d); }
  .spec:nth-child(n+3) { border-top: 1px solid var(--line-d); }
  .flow { grid-template-columns: 1fr 1fr; }
  .svc-grid { grid-template-columns: 1fr; }
  .svc:nth-child(5) { grid-column: span 1; }
  .ind-grid { grid-template-columns: 1fr; }
  .ind:nth-child(2n) { padding-left: 0; border-left: 0; }
  .fgrid { grid-template-columns: 1fr; }
  .ccard { grid-template-columns: 1fr auto; }
  .ccard .k { grid-column: 1 / -1; }
  .footer-grid { grid-template-columns: 1fr; }
  .clients-head { flex-direction: column; }
  .cert dl { grid-template-columns: 80px 1fr; }
  .hero-actions .btn { flex: 1 1 100%; }
  .lang-switch { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}
.qform.ticks::before, .qform.ticks::after { border-color: var(--accent); opacity: 1; }
.page-contact .sticky-quote { display: none; }

/* ---------- 微信二维码（联系页 / 页脚，2026-11 新增） ---------- */
.ccard .v img.qr { width: 180px; height: auto; margin-top: 16px; padding: 8px; background: #fff; border: 1px solid var(--line-d2); }
.footer-contact li.footer-qr { display: flex; align-items: center; gap: 14px; margin-top: 16px; }
.footer-contact li.footer-qr img { width: 96px; height: auto; padding: 5px; background: #fff; border: 1px solid var(--line-d2); }
.footer-contact li.footer-qr span { font: 400 12.5px/1.5 var(--f-mono); color: var(--mist); }
@media (max-width: 640px) {
  .ccard .v img.qr { width: 160px; }
}

/* ---------- v1.9 GEO升级（2026-11-02） ---------- */
.lang-zh .footer-grid { grid-template-columns: 1.3fr 1fr 1fr 1fr 1.4fr; gap: 32px; }
.svc-grid.six .svc { grid-column: span 2; }
.promise-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 1px solid var(--line-l2); border-left: 1px solid var(--line-l2); }
.promise { padding: 30px 28px 32px; border-right: 1px solid var(--line-l2); border-bottom: 1px solid var(--line-l2); color: #3A4048; }
.promise .big { font: 600 clamp(34px, 3.4vw, 50px)/1 var(--f-display); color: var(--ink); letter-spacing: -.03em; }
.promise .big small { font-size: .42em; margin-left: 4px; color: #6A717A; font-weight: 500; }
.promise h3 { font-size: 19px; margin: 18px 0 10px; }
.promise p { font-size: 14.5px; margin: 0; color: #5A616A; }
.promise .k { font: 500 11px/1 var(--f-mono); color: var(--accent); letter-spacing: .1em; display: block; margin-bottom: 18px; }
.section:not(.light) .promise-grid, .section:not(.light) .promise { border-color: var(--line-d2); }
.section:not(.light) .promise, .section:not(.light) .promise p { color: var(--fog); }
.section:not(.light) .promise .big, .section:not(.light) .promise h3 { color: var(--white); }
.offer-box { border: 1px solid var(--accent); padding: 30px 32px; display: grid; grid-template-columns: 1fr auto; gap: 24px 40px; align-items: center; }
.offer-box h3 { font-size: clamp(22px, 2vw, 30px); margin: 0 0 12px; }
.offer-box p { margin: 0; font-size: 14.5px; }
.section.light .offer-box p { color: #3A4048; }
.tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0 0; padding: 0; list-style: none; }
.tag-list li { font: 400 13px/1 var(--f-mono); padding: 8px 12px; border: 1px solid var(--line-l2); color: #3A4048; }
.section:not(.light) .tag-list li { border-color: var(--line-d2); color: var(--fog); }
@media (max-width: 1180px) {
  .lang-zh .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 960px) {
  .svc-grid.six .svc, .svc-grid.six .svc:nth-child(5) { grid-column: span 1; }
  .promise-grid { grid-template-columns: 1fr 1fr; }
  .offer-box { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .lang-zh .footer-grid { grid-template-columns: 1fr; }
  .promise-grid { grid-template-columns: 1fr; }
}

/* ---------- 在线咨询窗 ---------- */
.cx-fab { position: fixed; right: 24px; bottom: 88px; z-index: 60; border: 0; cursor: pointer; background: var(--white); color: var(--ink); font: 600 14px/1 var(--f-body); padding: 15px 20px; border-radius: var(--r); display: flex; gap: 10px; align-items: center; box-shadow: 0 10px 30px rgba(0,0,0,.35); }
.cx-fab .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); animation: blink 1.4s infinite; }
.page-contact .cx-fab { bottom: 24px; }
.cx-panel { position: fixed; right: 24px; bottom: 148px; z-index: 61; width: 340px; max-height: calc(100vh - 180px); overflow: auto; background: var(--ink-2); color: var(--fog); border: 1px solid var(--line-d2); border-radius: var(--r); padding: 18px; box-shadow: 0 20px 60px rgba(0,0,0,.5); }
.page-contact .cx-panel { bottom: 84px; }
.cx-panel[hidden] { display: none; }
.cx-head { display: flex; justify-content: space-between; align-items: center; color: var(--white); margin-bottom: 8px; }
.cx-x { background: none; border: 0; color: var(--fog); font-size: 24px; line-height: 1; cursor: pointer; }
.cx-hello { font-size: 13px; line-height: 1.6; margin: 0 0 12px; }
.cx-form { display: grid; gap: 8px; position: relative; }
.cx-form input[name=phone], .cx-form input[name=name], .cx-form textarea { width: 100%; box-sizing: border-box; background: var(--ink); color: var(--white); border: 1px solid var(--line-d2); border-radius: 4px; padding: 10px; font: 14px/1.4 var(--f-body); }
.cx-form textarea { resize: vertical; }
.cx-consent, .consent { font-size: 12px; line-height: 1.5; display: flex; gap: 6px; align-items: flex-start; }
.consent { margin: 14px 0; }
.cx-send { background: var(--accent); color: #fff; border: 0; border-radius: 4px; padding: 12px; font: 600 14px/1 var(--f-body); cursor: pointer; }
.cx-send:disabled { opacity: .6; cursor: wait; }
.cx-msg { font-size: 13px; color: var(--accent-2); margin: 0; }
.cx-alt { margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--line-d); display: grid; gap: 8px; justify-items: start; font-size: 13px; }
.cx-alt a { color: var(--white); }
.cx-copy { background: none; border: 1px solid var(--line-d2); color: var(--fog); border-radius: 4px; padding: 6px 10px; cursor: pointer; font: 13px var(--f-body); }
.cx-alt img { background: #fff; padding: 4px; border-radius: 4px; }
@media (max-width: 960px) { .cx-fab, .page-contact .cx-fab { bottom: 16px; right: 16px; } .cx-panel, .page-contact .cx-panel { right: 12px; left: 12px; width: auto; bottom: 76px; } }