/* ============================================================
   奥尔格精工 AEG — v5
   首屏（五轮毂切换） + 产品优势 + 成功案例 + 用户评价
   工业 × 科技 · 金属质感配色
   ============================================================ */

:root {
  --bg: #0a0c0e;
  --bg-2: #10141a;
  --steel: #c9ced6;
  --steel-dim: #8a919c;
  --steel-faint: #565e69;
  --amber: #e8a33d;
  --amber-deep: #b97a1e;
  --line: rgba(201, 206, 214, 0.09);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --font-tech: "Chakra Petch", "Noto Sans SC", sans-serif;
  --font-body: "Noto Sans SC", sans-serif;
  --wheel-duration: 5000ms;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

html, body {
  background: var(--bg);
  color: var(--steel);
  font-family: var(--font-body);
  overflow-x: hidden;
}

body {
  min-height: 100dvh;
  background: var(--bg);
}

/* 页面内容包裹：承载原 body 渐变。文档在常规页脚处自然到底；
   揭示页尾默认隐藏在视口之下，由 JS 在“到底后再滚动”时滑入（见 .site-footer） */
.page-wrap {
  position: relative;
  z-index: 2;
  background:
    radial-gradient(1100px 600px at 78% 42%, rgba(232, 163, 61, 0.07), transparent 60%),
    radial-gradient(900px 700px at 15% 85%, rgba(64, 84, 110, 0.16), transparent 65%),
    linear-gradient(160deg, var(--bg-2) 0%, var(--bg) 55%);
}

/* ============================================================
   揭示页尾 Footer（固定于视口底部，与常规页尾等高）
   默认 translateY(100%) 隐藏在视口下方；JS 检测“到底后再滚动”时
   加 .revealed 使其上滑覆盖下半屏；向上滚动则收起。
   visibility 配合延迟，隐藏时脱离 Tab 顺序与读屏。无 JS 时保持隐藏，
   常规页脚仍在，此页尾仅为增强效果。
   ============================================================ */
.site-footer {
  position: fixed;
  bottom: 0; left: 0;
  width: 100%; height: var(--site-footer-height, 50vh);
  z-index: 6;
  overflow: hidden;
  display: grid; place-items: center;
  background:
    radial-gradient(900px 480px at 50% 118%, rgba(232, 163, 61, 0.14), transparent 62%),
    linear-gradient(180deg, #0c0f13 0%, #070809 100%);
  transform: translateY(100%);
  visibility: hidden;
  will-change: transform;
  transition: transform 0.65s var(--ease-out), visibility 0s 0.65s;
}
.site-footer.revealed {
  transform: translateY(0);
  visibility: visible;
  transition: transform 0.65s var(--ease-out), visibility 0s 0s;
}
.footer-wheels { position: absolute; inset: 0; z-index: 1; }
.fw {
  position: absolute;
  object-fit: contain;
  user-select: none; -webkit-user-drag: none;
  filter: drop-shadow(0 18px 30px rgba(0, 0, 0, 0.6));
  opacity: 0.55;
}
.fw-1 { width: clamp(150px, 20vw, 260px); left: 3%;  top: 50%; transform: translateY(-50%); animation: spin 46s linear infinite; opacity: 0.6; }
.fw-2 { width: clamp(120px, 15vw, 200px); left: 20%; top: 16%; animation: spin 34s linear infinite reverse; opacity: 0.4; }
.fw-3 { width: clamp(170px, 24vw, 320px); right: 4%; top: 50%; transform: translateY(-50%); animation: spin 52s linear infinite; opacity: 0.6; }
.fw-4 { width: clamp(110px, 13vw, 180px); right: 22%; top: 12%; animation: spin 30s linear infinite reverse; opacity: 0.38; }
.fw-5 { width: clamp(100px, 12vw, 160px); left: 42%; bottom: 6%; animation: spin 40s linear infinite; opacity: 0.3; }

.footer-brand { position: relative; z-index: 2; text-align: center; }
.footer-logo {
  display: block;
  font-family: var(--font-tech);
  font-size: clamp(3.2rem, 12vw, 9rem);
  font-weight: 700; letter-spacing: 0.22em; text-indent: 0.22em; line-height: 1;
  background: linear-gradient(100deg, #e8ecf1 15%, var(--amber) 50%, #f6d9a0 58%, #e8ecf1 90%);
  background-size: 220% 100%;
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
  animation: shimmer 7s ease-in-out infinite;
}
.footer-tag {
  display: block; margin-top: 14px;
  font-family: var(--font-tech);
  font-size: clamp(0.7rem, 1.4vw, 0.95rem);
  letter-spacing: 0.55em; text-indent: 0.55em;
  color: var(--amber);
}
.footer-meta {
  position: absolute; z-index: 2;
  left: 0; right: 0; bottom: 18px;
  display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap;
  padding: 0 clamp(20px, 4vw, 56px);
  font-size: 0.7rem; letter-spacing: 0.14em;
  color: var(--steel-faint);
}

/* ============================================================
   常规页脚 Page Footer（询盘下方 · 纯文本信息，无真实链接）
   ============================================================ */
.page-footer {
  position: relative; z-index: 5;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, #0c0f13 0%, #08090b 100%);
  padding: clamp(50px, 8vh, 88px) clamp(20px, 4vw, 56px) 0;
}
.pf-inner { max-width: 1280px; margin: 0 auto; }
.pf-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: clamp(28px, 4vw, 56px);
  padding-bottom: clamp(36px, 5vh, 56px);
}
.pf-brand .brand { margin-bottom: 16px; }
.pf-desc {
  font-size: 0.82rem; font-weight: 300; line-height: 1.8;
  color: var(--steel-faint); max-width: 34ch;
}
.pf-col h4 {
  font-family: var(--font-tech);
  font-size: 0.74rem; font-weight: 600; letter-spacing: 0.22em;
  color: var(--amber); margin-bottom: 18px;
}
.pf-col ul { list-style: none; display: flex; flex-direction: column; gap: 11px; }
.pf-col li {
  font-size: 0.82rem; font-weight: 300; letter-spacing: 0.03em;
  color: var(--steel-dim);
  transition: color 0.3s;
}
.pf-col li:hover { color: var(--steel); }
.pf-bottom {
  display: flex; justify-content: space-between; align-items: center; gap: 14px; flex-wrap: wrap;
  border-top: 1px solid var(--line);
  padding: 22px 0 26px;
  font-size: 0.72rem; letter-spacing: 0.12em;
  color: var(--steel-faint);
}

::selection { background: var(--amber); color: #14100a; }

/* ---------- 背景装饰 ---------- */
.bg-grid {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse 90% 80% at 50% 45%, #000 30%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 90% 80% at 50% 45%, #000 30%, transparent 78%);
}
.bg-vignette {
  position: fixed; inset: 0; z-index: 1; pointer-events: none;
  background: radial-gradient(ellipse 120% 100% at 50% 50%, transparent 55%, rgba(4, 5, 7, 0.75) 100%);
}
#sparks { position: fixed; inset: 0; z-index: 1; pointer-events: none; }

/* ---------- 入场帷幕 ---------- */
.curtain {
  position: fixed; inset: 0; z-index: 100;
  display: grid; place-items: center;
  pointer-events: none;
}
.curtain-panel {
  position: absolute; inset: 0;
  background: #070809;
  transform-origin: top;
}
.curtain-brand {
  position: relative; display: flex; flex-direction: column; align-items: center; gap: 10px;
}
.curtain-logo {
  font-family: var(--font-tech);
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 700; letter-spacing: 0.35em; text-indent: 0.35em;
  color: var(--steel);
}
.curtain-sub {
  font-family: var(--font-tech);
  font-size: 0.72rem; letter-spacing: 0.55em; text-indent: 0.55em;
  color: var(--amber);
}

/* ---------- 顶部导航 ---------- */
.nav {
  position: relative; z-index: 10;
  display: flex; align-items: center; justify-content: space-between;
  max-width: 1440px; margin: 0 auto;
  padding: 22px clamp(20px, 4vw, 56px);
}
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--steel); }
.brand-mark { width: 38px; height: 38px; color: var(--amber); animation: spin 24s linear infinite; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { font-size: 1.02rem; font-weight: 700; letter-spacing: 0.12em; }
.brand-text em {
  font-style: normal; font-family: var(--font-tech);
  font-size: 0.6rem; letter-spacing: 0.32em; color: var(--steel-dim);
}
.nav-links { display: flex; gap: 34px; }
.nav-links a {
  color: var(--steel-dim); text-decoration: none; font-size: 0.9rem; letter-spacing: 0.08em;
  position: relative; transition: color 0.3s;
}
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: -6px;
  width: 100%; height: 1px; background: var(--amber);
  transform: scaleX(0); transform-origin: right;
  transition: transform 0.4s var(--ease-out);
}
.nav-links a:hover { color: var(--steel); }
.nav-links a:hover::after { transform: scaleX(1); transform-origin: left; }
.nav-cta {
  font-size: 0.85rem; letter-spacing: 0.1em; text-decoration: none;
  color: #14100a; background: linear-gradient(135deg, var(--amber), var(--amber-deep));
  padding: 10px 22px; border-radius: 2px;
  box-shadow: 0 0 0 1px rgba(232, 163, 61, 0.4), 0 8px 24px -8px rgba(232, 163, 61, 0.5);
  transition: transform 0.25s var(--ease-out), box-shadow 0.3s;
}
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 0 0 1px rgba(232,163,61,.6), 0 14px 32px -8px rgba(232,163,61,.65); }

/* ---------- 首屏布局 ---------- */
.hero {
  position: relative; z-index: 5;
  max-width: 1440px; margin: 0 auto;
  min-height: calc(100dvh - 82px);
  padding: 0 clamp(20px, 4vw, 56px);
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  grid-template-rows: 1fr auto;
  grid-template-areas: "copy stage" "stats stats";
  align-items: center;
  column-gap: clamp(24px, 4vw, 72px);
}

/* ---------- 左侧文案 ---------- */
.hero-copy { grid-area: copy; padding: clamp(12px, 3vh, 40px) 0; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-tech);
  font-size: 0.72rem; letter-spacing: 0.3em;
  color: var(--amber);
  border: 1px solid rgba(232, 163, 61, 0.28);
  padding: 8px 16px; border-radius: 999px;
  background: rgba(232, 163, 61, 0.06);
  backdrop-filter: blur(6px);
  margin-bottom: clamp(20px, 3.5vh, 36px);
}
.eyebrow-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 10px var(--amber);
  animation: pulse 2.2s ease-in-out infinite;
}

.headline {
  font-size: clamp(2.6rem, 6.2vw, 5.2rem);
  font-weight: 900; line-height: 1.08; letter-spacing: 0.02em;
  color: #f2f4f7;
  margin-bottom: clamp(18px, 3vh, 30px);
}
.line-mask { display: block; overflow: hidden; padding-bottom: 0.08em; }
.line { display: inline-block; will-change: transform; }
.line-accent {
  background: linear-gradient(100deg, #e8ecf1 20%, var(--amber) 48%, #f6d9a0 55%, var(--amber) 62%, #e8ecf1 85%);
  background-size: 220% 100%;
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
  animation: shimmer 5.5s ease-in-out infinite;
}

.subcopy {
  max-width: 52ch;
  font-size: clamp(0.92rem, 1.05vw, 1.02rem);
  font-weight: 300; line-height: 1.9;
  color: var(--steel-dim);
  margin-bottom: clamp(26px, 4vh, 44px);
}

.cta-row { display: flex; flex-wrap: wrap; gap: 16px; }
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  text-decoration: none; font-size: 0.95rem; letter-spacing: 0.06em;
  padding: 15px 30px; border-radius: 2px;
  transition: transform 0.25s var(--ease-out), box-shadow 0.3s, background 0.3s, color 0.3s;
}
.btn svg { width: 18px; height: 18px; transition: transform 0.3s var(--ease-out); }
.btn:hover svg { transform: translateX(4px); }
.btn-primary {
  color: #14100a; font-weight: 500;
  background: linear-gradient(135deg, var(--amber), var(--amber-deep));
  box-shadow: 0 0 0 1px rgba(232,163,61,.4), 0 12px 32px -10px rgba(232,163,61,.55);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 0 0 1px rgba(232,163,61,.65), 0 20px 44px -12px rgba(232,163,61,.7); }
.btn-ghost {
  color: var(--steel);
  border: 1px solid rgba(201, 206, 214, 0.22);
  background: rgba(201, 206, 214, 0.04);
  backdrop-filter: blur(6px);
}
.btn-ghost:hover { transform: translateY(-3px); border-color: rgba(232,163,61,.5); color: var(--amber); }
.play-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--amber); box-shadow: 0 0 8px var(--amber);
  animation: pulse 2s ease-in-out infinite;
}

/* ---------- 右侧轮毂舞台 ---------- */
.wheel-stage {
  grid-area: stage;
  position: relative;
  aspect-ratio: 1 / 1.06;
  max-width: min(560px, 44vw);
  width: 100%;
  justify-self: center;
  display: grid; place-items: center;
}

.wheel-glow {
  position: absolute; inset: 6% 6% 12%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(232,163,61,.16) 0%, rgba(120,140,170,.10) 42%, transparent 68%);
  filter: blur(18px);
  animation: breathe 5s ease-in-out infinite;
}

.orbit { position: absolute; top: 0; left: 0; width: 100%; height: 88%; overflow: visible; pointer-events: none; }
.orbit circle { fill: none; }
.orbit-outer circle {
  stroke: rgba(201, 206, 214, 0.16); stroke-width: 0.35;
  stroke-dasharray: 0.6 2.4;
  animation: spin 60s linear infinite;
  transform-origin: 50% 50%;
}
.orbit-ticks circle {
  stroke: rgba(232, 163, 61, 0.5); stroke-width: 0.8;
  stroke-dasharray: 4 96;
  animation: spin 18s linear infinite reverse;
  transform-origin: 50% 50%;
  filter: drop-shadow(0 0 3px rgba(232,163,61,.8));
}

.wheel-spin {
  position: relative; width: 84%; aspect-ratio: 1/1;
  will-change: transform;
}

.wheel-slide {
  position: absolute; inset: 0;
  opacity: 0;
  transform: scale(0.9) rotate(-9deg);
  transition:
    opacity 0.95s var(--ease-out),
    transform 0.95s var(--ease-out);
  pointer-events: none;
  will-change: opacity, transform;
}
.wheel-slide img {
  width: 100%; height: 100%; object-fit: contain; display: block;
  user-select: none; -webkit-user-drag: none;
}
.wheel-slide.active { opacity: 1; transform: scale(1) rotate(0deg); }
.wheel-slide.leaving { opacity: 0; transform: scale(1.07) rotate(7deg); }

.wheel-sheen {
  position: absolute; inset: 0; border-radius: 50%;
  background: conic-gradient(from 0deg,
    transparent 0deg, transparent 38deg,
    rgba(255, 255, 255, 0.14) 58deg, rgba(255, 215, 150, 0.2) 68deg,
    rgba(255, 255, 255, 0.14) 78deg, transparent 98deg,
    transparent 360deg);
  mix-blend-mode: screen;
  animation: spin 9s linear infinite reverse;
  pointer-events: none;
}

.wheel-shadow {
  position: absolute; bottom: 10%; left: 50%;
  width: 62%; height: 7%;
  transform: translateX(-50%);
  border-radius: 50%;
  background: radial-gradient(ellipse, rgba(0,0,0,.65) 0%, transparent 70%);
  filter: blur(10px);
}

.stage-tag {
  position: absolute; z-index: 6;
  display: flex; flex-direction: column; gap: 2px;
  padding: 10px 16px;
  background: rgba(13, 16, 20, 0.72);
  border: 1px solid rgba(201, 206, 214, 0.14);
  border-left: 2px solid var(--amber);
  backdrop-filter: blur(10px);
  border-radius: 2px;
}
.tag-tl { top: 6%; left: -4%; }
.tag-br { bottom: 20%; right: -3%; }
.tag-num { font-family: var(--font-tech); font-weight: 700; font-size: 1rem; color: #eef1f5; letter-spacing: 0.06em; }
.tag-label { font-size: 0.68rem; color: var(--steel-dim); letter-spacing: 0.14em; }

/* ---------- 系列切换控件 ---------- */
.stage-controls {
  position: absolute; z-index: 8;
  bottom: -2%; left: 50%;
  transform: translateX(-50%);
  display: flex; align-items: center; gap: 18px;
}
.stage-arrow {
  width: 38px; height: 38px; border-radius: 50%;
  display: grid; place-items: center;
  background: rgba(13, 16, 20, 0.66);
  border: 1px solid rgba(201, 206, 214, 0.18);
  color: var(--steel-dim); cursor: pointer;
  backdrop-filter: blur(8px);
  transition: color .3s, border-color .3s, transform .25s var(--ease-out);
}
.stage-arrow:hover { color: var(--amber); border-color: rgba(232,163,61,.55); }
.stage-arrow:active { transform: scale(0.9); }
.stage-arrow svg { width: 16px; height: 16px; }
.stage-arrow:focus-visible { outline: 2px solid var(--amber); outline-offset: 3px; }

.stage-info { display: flex; flex-direction: column; align-items: center; gap: 9px; min-width: 150px; }
.stage-series {
  font-family: var(--font-tech);
  font-size: 0.78rem; font-weight: 600; letter-spacing: 0.34em; text-indent: 0.34em;
  color: #eef1f5;
  transition: opacity .45s var(--ease-out), transform .45s var(--ease-out);
}
.stage-series.swap { opacity: 0; transform: translateY(6px); }

.stage-dots { display: flex; gap: 10px; }
.stage-dot {
  position: relative;
  width: 30px; height: 18px;
  background: none; border: none; cursor: pointer;
  display: grid; place-items: center;
}
.stage-dot::before {
  content: ""; display: block;
  width: 100%; height: 2px; border-radius: 2px;
  background: rgba(201, 206, 214, 0.18);
  transition: background .3s;
}
.stage-dot:hover::before { background: rgba(232, 163, 61, 0.45); }
.stage-dot .prog {
  position: absolute; left: 0; top: 50%;
  width: 0%; height: 2px; margin-top: -1px;
  background: var(--amber); border-radius: 2px;
  box-shadow: 0 0 8px rgba(232, 163, 61, 0.7);
}
.stage-dot.on .prog { animation: fill var(--wheel-duration) linear forwards; }
.stage-dot:focus-visible { outline: 2px solid var(--amber); outline-offset: 3px; }
@keyframes fill { from { width: 0%; } to { width: 100%; } }

/* ---------- 底部数据带 ---------- */
.stats {
  grid-area: stats;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  margin-top: clamp(16px, 3vh, 36px);
  padding: clamp(18px, 3vh, 30px) 0 clamp(22px, 4vh, 42px);
}
.stat {
  display: flex; flex-direction: column; gap: 6px;
  padding: 0 clamp(14px, 2vw, 32px);
  border-left: 1px solid var(--line);
}
.stat:first-child { border-left: none; padding-left: 0; }
.stat-value {
  font-family: var(--font-tech);
  font-size: clamp(1.5rem, 2.6vw, 2.3rem);
  font-weight: 700; color: #eef1f5; letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
}
.stat:first-child .stat-value { color: var(--amber); text-shadow: 0 0 24px rgba(232,163,61,.35); }
.stat-value i { font-style: normal; font-size: 0.62em; margin-left: 2px; color: var(--steel-dim); }
.stat-label { font-size: 0.74rem; letter-spacing: 0.16em; color: var(--steel-faint); }

/* ---------- 动效开关 ---------- */
.motion-toggle {
  position: absolute; right: clamp(20px, 4vw, 56px); bottom: 110px;
  z-index: 20;
  width: 40px; height: 40px; border-radius: 50%;
  display: grid; place-items: center;
  background: rgba(13, 16, 20, 0.7);
  border: 1px solid rgba(201, 206, 214, 0.2);
  color: var(--steel-dim); cursor: pointer;
  transition: color .3s, border-color .3s;
}
.motion-toggle:hover { color: var(--amber); border-color: rgba(232,163,61,.5); }
.motion-toggle svg { width: 16px; height: 16px; }
.motion-toggle .icon-play { display: none; }
.motion-toggle[aria-pressed="true"] .icon-pause { display: none; }
.motion-toggle[aria-pressed="true"] .icon-play { display: block; }
.motion-toggle:focus-visible { outline: 2px solid var(--amber); outline-offset: 3px; }

/* ---------- 底部跑马灯 ---------- */
.marquee {
  position: relative; z-index: 5;
  border-top: 1px solid var(--line);
  background: rgba(8, 10, 12, 0.6);
  overflow: hidden; padding: 13px 0;
}
.marquee-track {
  display: flex; width: max-content;
  animation: marquee 30s linear infinite;
}
.marquee-track span {
  font-family: var(--font-tech);
  font-size: 0.72rem; letter-spacing: 0.3em;
  color: var(--steel-faint); white-space: nowrap;
}

/* ============================================================
   板块通用
   ============================================================ */
.benefits, .process, .stories, .testimonials, .service, .creds, .products, .inquiry {
  position: relative; z-index: 5;
  padding: clamp(70px, 11vh, 130px) clamp(20px, 4vw, 56px) clamp(80px, 12vh, 140px);
  border-top: 1px solid var(--line);
}
.benefits {
  background:
    radial-gradient(900px 500px at 85% 8%, rgba(232, 163, 61, 0.05), transparent 60%),
    linear-gradient(180deg, rgba(13, 16, 20, 0) 0%, rgba(13, 16, 20, 0.55) 18%, rgba(13, 16, 20, 0.55) 82%, rgba(13, 16, 20, 0) 100%);
}
.stories {
  background:
    radial-gradient(900px 500px at 12% 10%, rgba(232, 163, 61, 0.045), transparent 60%),
    linear-gradient(180deg, rgba(13, 16, 20, 0) 0%, rgba(11, 14, 18, 0.6) 18%, rgba(11, 14, 18, 0.6) 82%, rgba(13, 16, 20, 0) 100%);
}
.testimonials {
  background:
    radial-gradient(900px 500px at 50% 100%, rgba(232, 163, 61, 0.05), transparent 60%),
    linear-gradient(180deg, rgba(13, 16, 20, 0) 0%, rgba(13, 16, 20, 0.5) 18%, rgba(13, 16, 20, 0.5) 82%, rgba(13, 16, 20, 0) 100%);
}
.process {
  background:
    radial-gradient(920px 520px at 16% 8%, rgba(232, 163, 61, 0.05), transparent 60%),
    linear-gradient(180deg, rgba(13, 16, 20, 0) 0%, rgba(12, 15, 19, 0.6) 18%, rgba(12, 15, 19, 0.6) 82%, rgba(13, 16, 20, 0) 100%);
}
.service {
  background:
    radial-gradient(900px 520px at 84% 10%, rgba(232, 163, 61, 0.05), transparent 60%),
    linear-gradient(180deg, rgba(13, 16, 20, 0) 0%, rgba(12, 15, 19, 0.58) 18%, rgba(12, 15, 19, 0.58) 82%, rgba(13, 16, 20, 0) 100%);
}
.creds {
  background:
    radial-gradient(920px 520px at 50% 0%, rgba(232, 163, 61, 0.055), transparent 60%),
    linear-gradient(180deg, rgba(13, 16, 20, 0) 0%, rgba(12, 15, 19, 0.6) 18%, rgba(12, 15, 19, 0.6) 82%, rgba(13, 16, 20, 0) 100%);
}
.products {
  background:
    radial-gradient(920px 520px at 84% 8%, rgba(232, 163, 61, 0.05), transparent 60%),
    linear-gradient(180deg, rgba(13, 16, 20, 0) 0%, rgba(12, 15, 19, 0.6) 18%, rgba(12, 15, 19, 0.6) 82%, rgba(13, 16, 20, 0) 100%);
}
.inquiry {
  background:
    radial-gradient(920px 520px at 16% 12%, rgba(232, 163, 61, 0.06), transparent 60%),
    linear-gradient(180deg, rgba(13, 16, 20, 0) 0%, rgba(12, 15, 19, 0.6) 18%, rgba(12, 15, 19, 0.6) 82%, rgba(13, 16, 20, 0) 100%);
}
.benefits-inner, .stories-inner, .t-inner, .process-inner, .service-inner, .creds-inner, .products-inner, .inquiry-inner { max-width: 1280px; margin: 0 auto; }

/* 板块标题 */
.benefits-head { text-align: center; margin-bottom: clamp(44px, 7vh, 72px); }
.b-eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-tech);
  font-size: 0.7rem; letter-spacing: 0.32em;
  color: var(--amber);
  border: 1px solid rgba(232, 163, 61, 0.28);
  padding: 8px 16px; border-radius: 999px;
  background: rgba(232, 163, 61, 0.06);
  margin-bottom: 26px;
}
.b-title {
  font-family: var(--font-tech);
  font-size: clamp(1.7rem, 3.6vw, 2.9rem);
  font-weight: 700; line-height: 1.22; letter-spacing: 0.02em;
  color: #f2f4f7;
  margin-bottom: 18px;
}
.b-title-accent {
  background: linear-gradient(100deg, #e8ecf1 15%, var(--amber) 50%, #f6d9a0 58%, #e8ecf1 90%);
  background-size: 220% 100%;
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
  animation: shimmer 6s ease-in-out infinite;
}
.b-sub {
  max-width: 62ch; margin: 0 auto 10px;
  font-size: clamp(0.92rem, 1.1vw, 1.04rem);
  font-weight: 300; line-height: 1.8; color: var(--steel-dim);
}
.b-sub-cn {
  max-width: 62ch; margin: 0 auto;
  font-size: 0.84rem; font-weight: 300;
  letter-spacing: 0.06em; color: var(--steel-faint);
}

/* ---------- 产品优势：六卡网格 ---------- */
.b-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.b-card {
  position: relative;
  padding: 30px 28px 26px;
  background: rgba(16, 20, 26, 0.62);
  border: 1px solid rgba(201, 206, 214, 0.1);
  border-radius: 6px;
  backdrop-filter: blur(8px);
  overflow: hidden;
  transition: transform 0.4s var(--ease-out), border-color 0.4s, box-shadow 0.4s;
}
.b-card::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(420px 200px at var(--mx, 50%) var(--my, 0%), rgba(232, 163, 61, 0.09), transparent 65%);
  opacity: 0; transition: opacity 0.4s;
  pointer-events: none;
}
.b-card:hover { transform: translateY(-6px); border-color: rgba(232, 163, 61, 0.35); box-shadow: 0 24px 48px -18px rgba(0, 0, 0, 0.6); }
.b-card:hover::before { opacity: 1; }

.b-icon {
  width: 46px; height: 46px;
  display: grid; place-items: center;
  border: 1px solid rgba(232, 163, 61, 0.32);
  border-radius: 4px;
  color: var(--amber);
  background: rgba(232, 163, 61, 0.07);
  margin-bottom: 20px;
  transition: transform 0.4s var(--ease-out);
}
.b-card:hover .b-icon { transform: rotate(-6deg) scale(1.06); }
.b-icon svg { width: 24px; height: 24px; }

.b-index {
  position: absolute; top: 22px; right: 24px;
  font-family: var(--font-tech);
  font-size: 0.72rem; letter-spacing: 0.2em;
  color: var(--steel-faint);
}
.b-card-title {
  font-family: var(--font-tech);
  font-size: 1.06rem; font-weight: 600; letter-spacing: 0.03em;
  color: #eef1f5; margin-bottom: 12px;
}
.b-card-en {
  font-size: 0.82rem; font-weight: 300; line-height: 1.75;
  color: var(--steel-dim); margin-bottom: 10px;
}
.b-card-cn {
  font-size: 0.78rem; font-weight: 300; line-height: 1.7;
  color: var(--steel-faint); letter-spacing: 0.02em;
  padding-bottom: 16px; margin-bottom: 16px;
  border-bottom: 1px dashed rgba(201, 206, 214, 0.12);
}
.b-chips { display: flex; flex-wrap: wrap; gap: 7px; }
.b-chips span {
  font-family: var(--font-tech);
  font-size: 0.64rem; letter-spacing: 0.08em;
  color: var(--steel-dim);
  border: 1px solid rgba(201, 206, 214, 0.14);
  padding: 4px 9px; border-radius: 2px;
  background: rgba(201, 206, 214, 0.04);
  transition: color .3s, border-color .3s;
}
.b-card:hover .b-chips span,
.s-card:hover .b-chips span { color: var(--steel); border-color: rgba(232, 163, 61, 0.3); }

/* ---------- 数据横栏 ---------- */
.b-band {
  margin-top: clamp(40px, 6vh, 64px);
  padding: clamp(30px, 4.5vh, 44px) clamp(24px, 3.5vw, 52px);
  background:
    radial-gradient(700px 300px at 50% 0%, rgba(232, 163, 61, 0.08), transparent 65%),
    linear-gradient(160deg, #14181f 0%, #0b0e12 70%);
  border: 1px solid rgba(201, 206, 214, 0.12);
  border-radius: 8px;
  position: relative; overflow: hidden;
}
.b-band::before {
  content: ""; position: absolute; top: 0; left: 8%; right: 8%; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(232, 163, 61, 0.6), transparent);
}
.b-band-title {
  text-align: center;
  font-family: var(--font-tech);
  font-size: clamp(1rem, 1.7vw, 1.3rem);
  font-weight: 600; letter-spacing: 0.06em; color: #eef1f5;
  margin-bottom: clamp(26px, 4vh, 38px);
}
.b-band-title span { color: var(--amber); }
.b-band-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
}
.b-band-item {
  display: flex; flex-direction: column; align-items: center; gap: 7px;
  padding: 0 10px;
  border-left: 1px solid rgba(201, 206, 214, 0.1);
}
.b-band-item:first-child { border-left: none; }
.b-band-value {
  font-family: var(--font-tech);
  font-size: clamp(1.25rem, 2vw, 1.7rem);
  font-weight: 700; color: #eef1f5;
  font-variant-numeric: tabular-nums; white-space: nowrap;
}
.b-band-value i { font-style: normal; font-size: 0.6em; color: var(--amber); margin-left: 3px; }
.b-band-label {
  font-size: 0.68rem; letter-spacing: 0.14em;
  color: var(--steel-faint); text-align: center;
}

/* ---------- 行动按钮 ---------- */
.b-cta { text-align: center; margin-top: clamp(44px, 7vh, 68px); }
.b-cta-btns {
  display: flex; justify-content: center; flex-wrap: wrap;
  gap: 16px; margin-bottom: 22px;
}
.b-cta-note {
  font-size: 0.8rem; font-weight: 300; line-height: 1.9;
  color: var(--steel-dim); max-width: 68ch; margin: 0 auto;
}
.b-cta-note span { color: var(--steel-faint); font-size: 0.76rem; letter-spacing: 0.04em; }

/* ============================================================
   成功案例 Stories
   ============================================================ */
.s-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.s-card {
  display: flex; flex-direction: column;
  background: rgba(16, 20, 26, 0.62);
  border: 1px solid rgba(201, 206, 214, 0.1);
  border-radius: 6px;
  backdrop-filter: blur(8px);
  overflow: hidden;
  transition: transform 0.4s var(--ease-out), border-color 0.4s, box-shadow 0.4s;
}
.s-card:hover { transform: translateY(-6px); border-color: rgba(232, 163, 61, 0.35); box-shadow: 0 24px 48px -18px rgba(0, 0, 0, 0.6); }

.s-visual {
  position: relative;
  aspect-ratio: 16 / 10;
  background:
    radial-gradient(70% 90% at 50% 45%, rgba(64, 84, 110, 0.22), transparent 75%),
    #0b0e12;
  border-bottom: 1px solid rgba(201, 206, 214, 0.1);
  overflow: hidden;
}
.s-visual img {
  width: 100%; height: 100%;
  object-fit: contain;
  padding: 12%;
  transition: transform 0.7s var(--ease-out);
  user-select: none; -webkit-user-drag: none;
}
.s-card:hover .s-visual img { transform: scale(1.08) rotate(4deg); }
.s-visual::after {
  content: ""; position: absolute; inset: 0;
  background: conic-gradient(from 180deg,
    transparent 0deg, transparent 130deg,
    rgba(255, 215, 150, 0.1) 160deg, transparent 195deg);
  mix-blend-mode: screen;
  opacity: 0; transition: opacity 0.5s;
  pointer-events: none;
}
.s-card:hover .s-visual::after { opacity: 1; }

.s-badges {
  position: absolute; top: 14px; left: 14px; z-index: 2;
  display: flex; gap: 8px; flex-wrap: wrap;
}
.s-badge {
  font-family: var(--font-tech);
  font-size: 0.62rem; letter-spacing: 0.16em;
  color: var(--steel);
  background: rgba(10, 12, 14, 0.72);
  border: 1px solid rgba(201, 206, 214, 0.22);
  padding: 5px 10px; border-radius: 2px;
  backdrop-filter: blur(6px);
}
.s-badge-amber {
  color: var(--amber);
  border-color: rgba(232, 163, 61, 0.45);
}

.s-body {
  display: flex; flex-direction: column; flex: 1;
  padding: 24px 24px 22px;
}
.s-type {
  font-family: var(--font-tech);
  font-size: 0.64rem; letter-spacing: 0.18em;
  color: var(--steel-faint);
  margin-bottom: 10px;
}
.s-title {
  font-family: var(--font-tech);
  font-size: 1.12rem; font-weight: 600; letter-spacing: 0.02em;
  color: #eef1f5; margin-bottom: 12px;
}
.s-desc {
  font-size: 0.82rem; font-weight: 300; line-height: 1.75;
  color: var(--steel-dim); margin-bottom: 8px;
}
.s-desc-cn {
  font-size: 0.78rem; font-weight: 300; line-height: 1.7;
  color: var(--steel-faint); letter-spacing: 0.02em;
  padding-bottom: 16px; margin-bottom: 16px;
  border-bottom: 1px dashed rgba(201, 206, 214, 0.12);
}
.s-body .b-chips { margin-bottom: 20px; }

.s-link {
  margin-top: auto;
  display: inline-flex; align-items: center; gap: 8px;
  align-self: flex-start;
  font-family: var(--font-tech);
  font-size: 0.78rem; font-weight: 600; letter-spacing: 0.14em;
  color: var(--amber); text-decoration: none;
  padding-bottom: 3px;
  border-bottom: 1px solid rgba(232, 163, 61, 0.35);
  transition: border-color .3s, gap .3s var(--ease-out);
}
.s-link svg { width: 15px; height: 15px; transition: transform 0.3s var(--ease-out); }
.s-link:hover { border-color: var(--amber); gap: 12px; }
.s-link:hover svg { transform: translateX(2px); }
.s-link:focus-visible { outline: 2px solid var(--amber); outline-offset: 3px; }

/* ============================================================
   用户评价 Testimonials（全英文）
   ============================================================ */
.t-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.t-card {
  position: relative;
  display: flex; flex-direction: column;
  padding: 34px 30px 26px;
  background: rgba(16, 20, 26, 0.62);
  border: 1px solid rgba(201, 206, 214, 0.1);
  border-radius: 6px;
  backdrop-filter: blur(8px);
  overflow: hidden;
  transition: transform 0.4s var(--ease-out), border-color 0.4s, box-shadow 0.4s;
}
.t-card::before {
  content: ""; position: absolute; top: 0; left: 0;
  width: 100%; height: 2px;
  background: linear-gradient(90deg, var(--amber), transparent 65%);
  opacity: 0.55;
  transition: opacity 0.4s;
}
.t-card:hover { transform: translateY(-6px); border-color: rgba(232, 163, 61, 0.35); box-shadow: 0 24px 48px -18px rgba(0, 0, 0, 0.6); }
.t-card:hover::before { opacity: 1; }

.t-quote {
  width: 34px; height: 34px;
  color: rgba(232, 163, 61, 0.5);
  margin-bottom: 18px;
  flex-shrink: 0;
}
.t-stars {
  display: flex; gap: 4px;
  margin-bottom: 18px;
}
.t-stars svg {
  width: 15px; height: 15px;
  fill: var(--amber);
  filter: drop-shadow(0 0 4px rgba(232, 163, 61, 0.45));
}
.t-text {
  flex: 1;
  font-size: 0.94rem; font-weight: 300; line-height: 1.85;
  color: var(--steel);
  letter-spacing: 0.01em;
  margin-bottom: 24px;
}
.t-footer {
  display: flex; align-items: center; gap: 14px;
  padding-top: 18px;
  border-top: 1px dashed rgba(201, 206, 214, 0.14);
}
.t-mono {
  width: 42px; height: 42px; flex-shrink: 0;
  display: grid; place-items: center;
  border-radius: 50%;
  font-family: var(--font-tech);
  font-size: 0.78rem; font-weight: 700; letter-spacing: 0.06em;
  color: var(--amber);
  border: 1px solid rgba(232, 163, 61, 0.4);
  background: rgba(232, 163, 61, 0.08);
}
.t-who { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.t-who strong {
  font-size: 0.86rem; font-weight: 600;
  color: #eef1f5; letter-spacing: 0.02em;
}
.t-who em {
  font-style: normal;
  font-size: 0.72rem; font-weight: 300;
  color: var(--steel-faint); letter-spacing: 0.04em;
}
.t-region {
  margin-left: auto; flex-shrink: 0;
  font-family: var(--font-tech);
  font-size: 0.62rem; letter-spacing: 0.16em;
  color: var(--steel-dim);
  border: 1px solid rgba(201, 206, 214, 0.16);
  padding: 5px 10px; border-radius: 2px;
  background: rgba(201, 206, 214, 0.04);
}

/* 信任横条 */
.t-trust {
  margin-top: clamp(40px, 6vh, 60px);
  display: flex; justify-content: center; align-items: center;
  flex-wrap: wrap; gap: 18px 26px;
  padding: 22px 28px;
  border: 1px solid rgba(201, 206, 214, 0.1);
  border-radius: 999px;
  background: rgba(13, 16, 20, 0.5);
}
.t-trust-item {
  font-family: var(--font-tech);
  font-size: 0.7rem; letter-spacing: 0.22em;
  color: var(--steel-dim); white-space: nowrap;
}
.t-trust-sep {
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 6px rgba(232, 163, 61, 0.7);
}

/* ============================================================
   生产过程 Process（锻造工艺流程 · 竖向时间线）
   ============================================================ */
.p-flow {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding-left: clamp(34px, 5vw, 56px);
}
/* 左侧发光轨道 */
.p-flow::before {
  content: ""; position: absolute;
  left: clamp(9px, 1.6vw, 15px); top: 6px; bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg,
    rgba(232, 163, 61, 0.0) 0%,
    rgba(232, 163, 61, 0.5) 8%,
    rgba(232, 163, 61, 0.55) 50%,
    rgba(201, 206, 214, 0.18) 92%,
    rgba(201, 206, 214, 0.0) 100%);
  box-shadow: 0 0 12px rgba(232, 163, 61, 0.25);
}
.p-step {
  position: relative;
  padding: 0 0 clamp(26px, 4vh, 40px);
}
.p-step:last-child { padding-bottom: 0; }
/* 节点圆点 */
.p-step::before {
  content: ""; position: absolute;
  /* 圆点中心对齐轨道中心：轨道中心(轨道 left+1px) - 卡片左缩进 - 半径(6.5px) */
  left: calc(clamp(9px, 1.6vw, 15px) + 1px - clamp(34px, 5vw, 56px) - 6.5px);
  top: 8px;
  width: 13px; height: 13px; border-radius: 50%;
  background: var(--bg-2);
  border: 2px solid var(--amber);
  box-shadow: 0 0 0 4px rgba(232, 163, 61, 0.12), 0 0 14px rgba(232, 163, 61, 0.55);
}
.p-card {
  position: relative;
  display: grid;
  grid-template-columns: 58px 1fr;
  gap: clamp(18px, 2.5vw, 26px);
  align-items: start;
  padding: clamp(22px, 3vh, 30px) clamp(22px, 3vw, 30px);
  background: rgba(16, 20, 26, 0.62);
  border: 1px solid rgba(201, 206, 214, 0.1);
  border-radius: 6px;
  backdrop-filter: blur(8px);
  overflow: hidden;
  transition: transform 0.4s var(--ease-out), border-color 0.4s, box-shadow 0.4s;
}
.p-card::before {
  content: ""; position: absolute; top: 0; left: 0;
  width: 100%; height: 2px;
  background: linear-gradient(90deg, var(--amber), transparent 60%);
  opacity: 0; transition: opacity 0.4s;
}
.p-card:hover { transform: translateY(-4px); border-color: rgba(232, 163, 61, 0.35); box-shadow: 0 24px 48px -18px rgba(0, 0, 0, 0.6); }
.p-card:hover::before { opacity: 0.9; }

.p-num {
  grid-row: 1 / span 2;
  display: flex; flex-direction: column; align-items: center; gap: 10px;
}
.p-num-badge {
  width: 52px; height: 52px;
  display: grid; place-items: center;
  font-family: var(--font-tech);
  font-size: 1.15rem; font-weight: 700; letter-spacing: 0.02em;
  color: var(--amber);
  border: 1px solid rgba(232, 163, 61, 0.4);
  border-radius: 6px;
  background: rgba(232, 163, 61, 0.07);
  box-shadow: inset 0 0 18px rgba(232, 163, 61, 0.08);
}
.p-num-label {
  font-family: var(--font-tech);
  font-size: 0.58rem; letter-spacing: 0.18em;
  color: var(--steel-faint);
  writing-mode: vertical-rl;
}
.p-body { min-width: 0; }
.p-title-row {
  display: flex; align-items: baseline; flex-wrap: wrap; gap: 10px;
  margin-bottom: 10px;
}
.p-title {
  font-family: var(--font-tech);
  font-size: 1.12rem; font-weight: 600; letter-spacing: 0.02em;
  color: #eef1f5;
}
.p-title-cn { font-size: 0.8rem; font-weight: 500; letter-spacing: 0.12em; color: var(--amber); }
.p-desc {
  font-size: 0.84rem; font-weight: 300; line-height: 1.78;
  color: var(--steel-dim); margin-bottom: 8px;
}
.p-desc-cn {
  font-size: 0.78rem; font-weight: 300; line-height: 1.7;
  color: var(--steel-faint); letter-spacing: 0.02em;
  padding-bottom: 16px; margin-bottom: 16px;
  border-bottom: 1px dashed rgba(201, 206, 214, 0.12);
}
.p-card .b-chips { margin-bottom: 0; }

/* 质检承诺横栏 */
.p-guarantee {
  margin-top: clamp(44px, 6vh, 64px);
  padding: clamp(30px, 4.5vh, 44px) clamp(24px, 3.5vw, 52px);
  background:
    radial-gradient(700px 300px at 50% 0%, rgba(232, 163, 61, 0.08), transparent 65%),
    linear-gradient(160deg, #14181f 0%, #0b0e12 70%);
  border: 1px solid rgba(201, 206, 214, 0.12);
  border-radius: 8px;
  position: relative; overflow: hidden;
}
.p-guarantee::before {
  content: ""; position: absolute; top: 0; left: 8%; right: 8%; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(232, 163, 61, 0.6), transparent);
}
.p-guarantee-title {
  text-align: center;
  font-family: var(--font-tech);
  font-size: clamp(1rem, 1.7vw, 1.3rem);
  font-weight: 600; letter-spacing: 0.06em; color: #eef1f5;
  margin-bottom: clamp(24px, 4vh, 36px);
}
.p-guarantee-title span { color: var(--amber); }
.p-guarantee-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.p-g-item {
  display: flex; flex-direction: column; align-items: center; gap: 7px;
  padding: 0 12px; text-align: center;
  border-left: 1px solid rgba(201, 206, 214, 0.1);
}
.p-g-item:first-child { border-left: none; }
.p-g-value {
  font-family: var(--font-tech);
  font-size: clamp(1.15rem, 1.9vw, 1.55rem);
  font-weight: 700; color: #eef1f5;
  font-variant-numeric: tabular-nums; white-space: nowrap;
}
.p-g-value i { font-style: normal; font-size: 0.6em; color: var(--amber); margin-left: 3px; }
.p-g-label { font-size: 0.68rem; letter-spacing: 0.14em; color: var(--steel-faint); }

/* ============================================================
   服务过程 Service Process（合作流程 · 编号步骤卡）
   ============================================================ */
.sv-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  counter-reset: svstep;
}
.sv-card {
  position: relative;
  display: flex; flex-direction: column;
  padding: 28px 24px 24px;
  background: rgba(16, 20, 26, 0.62);
  border: 1px solid rgba(201, 206, 214, 0.1);
  border-radius: 6px;
  backdrop-filter: blur(8px);
  overflow: hidden;
  transition: transform 0.4s var(--ease-out), border-color 0.4s, box-shadow 0.4s;
}
/* 顶部进度条：随序号渐变，体现“流程推进” */
.sv-card::before {
  content: ""; position: absolute; top: 0; left: 0;
  height: 2px; width: 100%;
  background: linear-gradient(90deg, var(--amber), rgba(232, 163, 61, 0.05) 85%);
  opacity: 0.4; transition: opacity 0.4s;
}
.sv-card:hover { transform: translateY(-6px); border-color: rgba(232, 163, 61, 0.35); box-shadow: 0 24px 48px -18px rgba(0, 0, 0, 0.6); }
.sv-card:hover::before { opacity: 1; }

.sv-step-head {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 18px;
}
.sv-num {
  width: 46px; height: 46px; flex-shrink: 0;
  display: grid; place-items: center;
  font-family: var(--font-tech);
  font-size: 1.1rem; font-weight: 700; letter-spacing: 0.02em;
  color: var(--amber);
  border: 1px solid rgba(232, 163, 61, 0.4);
  border-radius: 6px;
  background: rgba(232, 163, 61, 0.07);
  box-shadow: inset 0 0 16px rgba(232, 163, 61, 0.08);
}
.sv-step-meta { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.sv-step-phase {
  font-family: var(--font-tech);
  font-size: 0.6rem; letter-spacing: 0.22em;
  color: var(--steel-faint);
}
.sv-step-time {
  font-family: var(--font-tech);
  font-size: 0.72rem; font-weight: 600; letter-spacing: 0.1em;
  color: var(--amber);
}
.sv-icon { margin-left: auto; width: 22px; height: 22px; color: rgba(232, 163, 61, 0.6); flex-shrink: 0; }

.sv-title {
  font-family: var(--font-tech);
  font-size: 1.04rem; font-weight: 600; letter-spacing: 0.02em;
  color: #eef1f5; margin-bottom: 6px;
}
.sv-title-cn {
  font-size: 0.78rem; font-weight: 500; letter-spacing: 0.14em;
  color: var(--amber); margin-bottom: 14px;
}
.sv-desc {
  font-size: 0.82rem; font-weight: 300; line-height: 1.75;
  color: var(--steel-dim); margin-bottom: 8px;
}
.sv-desc-cn {
  font-size: 0.78rem; font-weight: 300; line-height: 1.7;
  color: var(--steel-faint); letter-spacing: 0.02em;
  padding-bottom: 16px; margin-bottom: 16px;
  border-bottom: 1px dashed rgba(201, 206, 214, 0.12);
}
.sv-card .b-chips { margin-top: auto; }

/* ============================================================
   实力凭证 Credentials（多维实力 · Bento 网格 + 多样动效）
   ============================================================ */
/* 入场方向变体：配合 .reveal 使用，打破“千篇一律”的入场 */
.reveal.rv-left   { transform: translateX(-52px); }
.reveal.rv-right  { transform: translateX(52px); }
.reveal.rv-scale  { transform: scale(0.88); }
.reveal.rv-rotate { transform: scale(0.82) rotate(-5deg); }
.reveal.rv-left.in, .reveal.rv-right.in, .reveal.rv-scale.in, .reveal.rv-rotate.in { transform: none; }

/* Bento 网格 */
.c-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.c-card {
  position: relative;
  display: flex; flex-direction: column;
  padding: 28px 26px 24px;
  background: rgba(16, 20, 26, 0.62);
  border: 1px solid rgba(201, 206, 214, 0.1);
  border-radius: 6px;
  backdrop-filter: blur(8px);
  overflow: hidden;
  transition: transform 0.4s var(--ease-out), border-color 0.4s, box-shadow 0.4s;
}
.c-card:hover { transform: translateY(-6px); border-color: rgba(232, 163, 61, 0.35); box-shadow: 0 24px 48px -18px rgba(0, 0, 0, 0.6); }
.c-feature { grid-column: span 2; }

.c-ico {
  width: 44px; height: 44px;
  display: grid; place-items: center;
  border: 1px solid rgba(232, 163, 61, 0.32);
  border-radius: 4px;
  color: var(--amber);
  background: rgba(232, 163, 61, 0.07);
  margin-bottom: 18px;
  transition: transform 0.4s var(--ease-out);
}
.c-card:hover .c-ico { transform: rotate(-6deg) scale(1.06); }
.c-ico svg { width: 22px; height: 22px; }

.c-title {
  font-family: var(--font-tech);
  font-size: 1.05rem; font-weight: 600; letter-spacing: 0.02em;
  color: #eef1f5; margin-bottom: 4px;
}
.c-title-cn {
  font-size: 0.78rem; font-weight: 500; letter-spacing: 0.12em;
  color: var(--amber); margin-bottom: 14px;
}
.c-desc {
  font-size: 0.82rem; font-weight: 300; line-height: 1.75;
  color: var(--steel-dim); margin-bottom: 8px;
}
.c-desc-cn {
  font-size: 0.78rem; font-weight: 300; line-height: 1.7;
  color: var(--steel-faint); letter-spacing: 0.02em;
  padding-bottom: 14px; margin-bottom: 14px;
  border-bottom: 1px dashed rgba(201, 206, 214, 0.12);
}
.c-card .b-chips { margin-top: auto; }

/* 大数字组（feature 卡） */
.c-nums { display: flex; flex-wrap: wrap; gap: clamp(18px, 3vw, 42px); margin-bottom: 18px; }
.c-num-box { display: flex; flex-direction: column; gap: 5px; }
.c-num {
  font-family: var(--font-tech);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700; color: #eef1f5; line-height: 1;
  font-variant-numeric: tabular-nums;
}
.c-num i { font-style: normal; font-size: 0.55em; color: var(--amber); margin-left: 3px; }
.c-num-label { font-size: 0.7rem; letter-spacing: 0.14em; color: var(--steel-faint); }

/* 小卡 KPI 数字 */
.c-kpi { display: flex; align-items: baseline; gap: 10px; margin-bottom: 12px; }
.c-kpi .c-num { font-size: clamp(1.9rem, 3vw, 2.6rem); }
.c-kpi-sub { font-family: var(--font-tech); font-size: 0.72rem; letter-spacing: 0.08em; color: var(--steel-dim); }

/* 进度条（卡入视口后填充） */
.c-bars { display: flex; flex-direction: column; gap: 14px; margin-top: 4px; }
.c-bar-row { display: flex; flex-direction: column; gap: 7px; }
.c-bar-head { display: flex; justify-content: space-between; font-size: 0.72rem; letter-spacing: 0.08em; color: var(--steel-dim); }
.c-bar-head b { font-family: var(--font-tech); color: var(--amber); font-weight: 600; }
.c-bar { height: 5px; border-radius: 3px; background: rgba(201, 206, 214, 0.1); overflow: hidden; }
.c-bar span {
  display: block; height: 100%; width: 0; border-radius: 3px;
  background: linear-gradient(90deg, var(--amber-deep), var(--amber));
  box-shadow: 0 0 8px rgba(232, 163, 61, 0.5);
  transition: width 1.5s var(--ease-out) 0.3s;
}
.c-card.in .c-bar span { width: var(--w, 50%); }

/* 认证徽章墙 */
.c-certs { margin-top: clamp(40px, 6vh, 60px); text-align: center; }
.c-certs-title {
  font-family: var(--font-tech);
  font-size: 0.72rem; letter-spacing: 0.3em;
  color: var(--steel-dim); margin-bottom: 26px;
}
.c-cert-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; }
.c-cert {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 22px;
  background: rgba(16, 20, 26, 0.62);
  border: 1px solid rgba(201, 206, 214, 0.12);
  border-radius: 6px;
  transition: transform 0.35s var(--ease-out), border-color 0.35s, box-shadow 0.35s;
}
.c-cert:hover { transform: translateY(-4px); border-color: rgba(232, 163, 61, 0.4); box-shadow: 0 16px 32px -14px rgba(0, 0, 0, 0.6); }
.c-cert svg { width: 20px; height: 20px; color: var(--amber); flex-shrink: 0; }
.c-cert-name { font-family: var(--font-tech); font-size: 0.82rem; font-weight: 600; letter-spacing: 0.1em; color: #eef1f5; }
.c-cert-cn { font-size: 0.66rem; letter-spacing: 0.1em; color: var(--steel-faint); }

/* 合作伙伴跑马灯（持续滚动，悬停暂停） */
.c-marquee {
  margin-top: clamp(36px, 5vh, 54px);
  border: 1px solid rgba(201, 206, 214, 0.1);
  border-radius: 999px;
  background: rgba(13, 16, 20, 0.5);
  overflow: hidden; padding: 16px 0; position: relative;
}
.c-marquee::before, .c-marquee::after {
  content: ""; position: absolute; top: 0; bottom: 0; width: 90px; z-index: 2; pointer-events: none;
}
.c-marquee::before { left: 0; background: linear-gradient(90deg, #0d1014, transparent); }
.c-marquee::after { right: 0; background: linear-gradient(-90deg, #0d1014, transparent); }
.c-marquee-track { display: flex; width: max-content; animation: marquee 28s linear infinite; }
.c-marquee:hover .c-marquee-track { animation-play-state: paused; }
.c-marquee-track span {
  font-family: var(--font-tech);
  font-size: 0.74rem; letter-spacing: 0.24em;
  color: var(--steel-dim); white-space: nowrap;
  padding: 0 26px;
}
.c-marquee-track span i { font-style: normal; color: var(--amber); margin-right: 26px; }

/* ============================================================
   产品展示 Products（铸造/锻造 双类切换 · 纯 CSS 选项卡）
   ============================================================ */
.prod-tabs > input { position: absolute; opacity: 0; pointer-events: none; }

.prod-tab-btns {
  display: flex; justify-content: center; gap: 14px; flex-wrap: wrap;
  margin-bottom: clamp(34px, 5vh, 52px);
}
.prod-tab-btns label {
  display: inline-flex; align-items: baseline; gap: 8px;
  font-family: var(--font-tech);
  font-size: 0.92rem; font-weight: 600; letter-spacing: 0.1em;
  color: var(--steel-dim);
  padding: 12px 26px; border-radius: 999px;
  border: 1px solid rgba(201, 206, 214, 0.2);
  background: rgba(201, 206, 214, 0.04);
  cursor: pointer; user-select: none;
  transition: color 0.3s, background 0.3s, border-color 0.3s, box-shadow 0.3s, transform 0.25s var(--ease-out);
}
.prod-tab-btns label em { font-style: normal; font-size: 0.66rem; letter-spacing: 0.18em; opacity: 0.7; }
.prod-tab-btns label:hover { color: var(--steel); border-color: rgba(232, 163, 61, 0.4); transform: translateY(-2px); }
#catForged:checked ~ .prod-tab-btns label[for="catForged"],
#catCast:checked ~ .prod-tab-btns label[for="catCast"] {
  color: #14100a;
  background: linear-gradient(135deg, var(--amber), var(--amber-deep));
  border-color: transparent;
  box-shadow: 0 0 0 1px rgba(232, 163, 61, 0.4), 0 12px 28px -10px rgba(232, 163, 61, 0.5);
}

.prod-panel { display: none; grid-template-columns: repeat(3, 1fr); gap: 18px; }
#catForged:checked ~ .prod-panels .panel-forged { display: grid; }
#catCast:checked ~ .prod-panels .panel-cast { display: grid; }

.prod-card {
  position: relative;
  background: rgba(16, 20, 26, 0.62);
  border: 1px solid rgba(201, 206, 214, 0.1);
  border-radius: 6px;
  backdrop-filter: blur(8px);
  overflow: hidden;
  transition: transform 0.4s var(--ease-out), border-color 0.4s, box-shadow 0.4s;
}
.prod-card:hover { transform: translateY(-6px); border-color: rgba(232, 163, 61, 0.35); box-shadow: 0 24px 48px -18px rgba(0, 0, 0, 0.6); }
.prod-visual {
  position: relative;
  aspect-ratio: 4 / 3;
  background:
    radial-gradient(70% 90% at 50% 45%, rgba(64, 84, 110, 0.22), transparent 75%),
    #0b0e12;
  border-bottom: 1px solid rgba(201, 206, 214, 0.1);
  overflow: hidden;
}
.prod-visual img {
  width: 100%; height: 100%;
  object-fit: contain; padding: 12%;
  transition: transform 0.7s var(--ease-out);
  user-select: none; -webkit-user-drag: none;
}
.prod-card:hover .prod-visual img { transform: scale(1.08) rotate(8deg); }
.prod-badge {
  position: absolute; top: 12px; left: 12px; z-index: 2;
  font-family: var(--font-tech);
  font-size: 0.6rem; letter-spacing: 0.18em;
  color: var(--amber);
  background: rgba(10, 12, 14, 0.72);
  border: 1px solid rgba(232, 163, 61, 0.45);
  padding: 5px 10px; border-radius: 2px;
  backdrop-filter: blur(6px);
}
.prod-badge.cast { color: var(--steel); border-color: rgba(201, 206, 214, 0.3); }
.prod-body { padding: 20px 20px 18px; }
.prod-model {
  font-family: var(--font-tech);
  font-size: 1.06rem; font-weight: 700; letter-spacing: 0.04em;
  color: #eef1f5; margin-bottom: 3px;
}
.prod-name {
  font-size: 0.78rem; font-weight: 300; letter-spacing: 0.06em;
  color: var(--steel-faint);
  padding-bottom: 14px; margin-bottom: 14px;
  border-bottom: 1px dashed rgba(201, 206, 214, 0.12);
}

/* ============================================================
   发送询盘 Inquiry（联系表单）
   ============================================================ */
.iq-wrap {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(28px, 4.5vw, 68px);
  align-items: start;
}
.iq-aside h3 {
  font-family: var(--font-tech);
  font-size: clamp(1.3rem, 2.4vw, 1.9rem); font-weight: 700;
  color: #f2f4f7; line-height: 1.25; margin-bottom: 16px;
}
.iq-aside h3 span {
  background: linear-gradient(100deg, #e8ecf1 15%, var(--amber) 50%, #f6d9a0 58%, #e8ecf1 90%);
  background-size: 220% 100%;
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
  animation: shimmer 6s ease-in-out infinite;
}
.iq-aside > p {
  font-size: 0.9rem; font-weight: 300; line-height: 1.85;
  color: var(--steel-dim); margin-bottom: 24px;
}
.iq-points { list-style: none; display: flex; flex-direction: column; gap: 13px; margin-bottom: 26px; }
.iq-points li {
  display: flex; align-items: center; gap: 12px;
  font-size: 0.85rem; font-weight: 300; color: var(--steel);
}
.iq-points li::before {
  content: ""; width: 7px; height: 7px; border-radius: 50%; flex-shrink: 0;
  background: var(--amber); box-shadow: 0 0 8px rgba(232, 163, 61, 0.7);
}
.iq-contact {
  border-top: 1px dashed rgba(201, 206, 214, 0.14);
  padding-top: 20px;
  display: flex; flex-direction: column; gap: 8px;
  font-family: var(--font-tech); font-size: 0.8rem; letter-spacing: 0.08em;
  color: var(--steel-dim);
}
.iq-contact b { color: var(--amber); font-weight: 600; }

.iq-form {
  background: rgba(16, 20, 26, 0.66);
  border: 1px solid rgba(201, 206, 214, 0.12);
  border-radius: 8px;
  backdrop-filter: blur(8px);
  padding: clamp(26px, 3.5vw, 40px);
  position: relative; overflow: hidden;
}
.iq-form::before {
  content: ""; position: absolute; top: 0; left: 8%; right: 8%; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(232, 163, 61, 0.55), transparent);
}
.iq-contact-intro { display: grid; gap: 8px; margin-bottom: 20px; padding-bottom: 18px; border-bottom: 1px dashed rgba(201, 206, 214, 0.14); }
.iq-contact-kicker { color: var(--amber); font-family: var(--font-tech); font-size: 0.62rem; letter-spacing: 0.18em; }
.iq-contact-intro strong { color: #eef1f5; font-family: var(--font-tech); font-size: 0.98rem; font-weight: 600; line-height: 1.35; }
.iq-contact-intro p { color: var(--steel-dim); font-size: 0.76rem; font-weight: 300; line-height: 1.6; }
.iq-draft-hint { display: grid; gap: 5px; margin: -4px 0 22px; padding: 12px 14px; border-left: 2px solid var(--amber); background: rgba(232, 163, 61, 0.06); }
.iq-draft-hint[hidden] { display: none; }
.iq-draft-hint span { color: var(--amber); font-family: var(--font-tech); font-size: 0.58rem; letter-spacing: 0.16em; }
.iq-draft-hint strong { color: var(--steel); font-size: 0.78rem; font-weight: 500; line-height: 1.45; }
.iq-draft-hint p { color: var(--steel-dim); font-size: 0.72rem; line-height: 1.5; }
.iq-field { margin-bottom: 18px; }
.iq-field label {
  display: block;
  font-family: var(--font-tech);
  font-size: 0.72rem; letter-spacing: 0.18em;
  color: var(--steel-dim); margin-bottom: 8px;
}
.iq-field label i { font-style: normal; color: var(--amber); }
.iq-input {
  width: 100%;
  background: rgba(10, 12, 14, 0.6);
  border: 1px solid rgba(201, 206, 214, 0.16);
  border-radius: 4px;
  color: var(--steel);
  font-family: var(--font-body);
  font-size: 0.92rem; font-weight: 300;
  padding: 13px 15px;
  transition: border-color 0.3s, box-shadow 0.3s, background 0.3s;
}
textarea.iq-input { resize: vertical; min-height: 96px; }
.iq-input::placeholder { color: var(--steel-faint); }
.iq-input:focus {
  outline: none;
  border-color: rgba(232, 163, 61, 0.6);
  box-shadow: 0 0 0 3px rgba(232, 163, 61, 0.12);
  background: rgba(10, 12, 14, 0.82);
}
.iq-field.invalid .iq-input { border-color: rgba(224, 122, 106, 0.7); box-shadow: 0 0 0 3px rgba(224, 122, 106, 0.12); }
.iq-err { display: none; font-size: 0.72rem; color: #e07a6a; margin-top: 6px; letter-spacing: 0.04em; }
.iq-field.invalid .iq-err { display: block; }

.iq-submit { width: 100%; justify-content: center; border: none; cursor: pointer; font-family: var(--font-body); }
.iq-status { min-height: 20px; margin-top: 14px; font-size: 0.82rem; letter-spacing: 0.04em; }
.iq-status.ok { color: #7fce8f; }
.iq-status.err { color: #e07a6a; }
.iq-note { margin-top: 6px; font-size: 0.74rem; font-weight: 300; color: var(--steel-faint); letter-spacing: 0.04em; text-align: center; }

/* ---------- 滚动揭示 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(38px);
  transition:
    opacity 0.9s var(--ease-out),
    transform 0.9s var(--ease-out);
  transition-delay: calc(var(--d, 0) * 110ms);
  will-change: opacity, transform;
}
.reveal.in { opacity: 1; transform: none; }

/* ---------- 关键帧 ---------- */
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.45; transform: scale(0.8); }
}
@keyframes breathe {
  0%, 100% { opacity: 0.85; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.06); }
}
@keyframes shimmer {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}
@keyframes marquee { to { transform: translateX(-50%); } }

/* 动效总开关 */
body.motion-paused *, body.motion-paused *::before, body.motion-paused *::after {
  animation-play-state: paused !important;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1100px) {
  .b-grid { grid-template-columns: repeat(2, 1fr); }
  .s-grid { grid-template-columns: repeat(2, 1fr); }
  .t-grid { grid-template-columns: repeat(2, 1fr); }
  .sv-grid { grid-template-columns: repeat(2, 1fr); }
  .c-grid { grid-template-columns: repeat(2, 1fr); }
  .c-feature { grid-column: span 2; }
  .prod-panel { grid-template-columns: repeat(2, 1fr); }
  .iq-wrap { grid-template-columns: 1fr; }
  .pf-grid { grid-template-columns: repeat(2, 1fr); row-gap: 34px; }
  .b-band-grid { grid-template-columns: repeat(3, 1fr); row-gap: 26px; }
  .b-band-item:nth-child(4) { border-left: none; }
  .p-guarantee-grid { grid-template-columns: repeat(2, 1fr); row-gap: 26px; }
  .p-g-item:nth-child(3) { border-left: none; }
}

@media (max-width: 1024px) {
  .hero {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto;
    grid-template-areas: "copy" "stage" "stats";
    row-gap: 8px;
    padding-top: 8px;
  }
  .hero-copy { text-align: left; max-width: 640px; }
  .wheel-stage { max-width: min(440px, 80vw); margin: 8px auto; }
  .tag-tl { left: -2%; }
  .tag-br { right: -2%; }
  .stats { grid-template-columns: repeat(2, 1fr); row-gap: 22px; }
  .stat:nth-child(3) { border-left: none; padding-left: 0; }
  .nav-links { display: none; }
  .motion-toggle { bottom: 150px; }
}

@media (max-width: 640px) {
  .b-grid { grid-template-columns: 1fr; }
  .s-grid { grid-template-columns: 1fr; }
  .t-grid { grid-template-columns: 1fr; }
  .sv-grid { grid-template-columns: 1fr; }
  .c-grid { grid-template-columns: 1fr; }
  .c-feature { grid-column: span 1; }
  .prod-panel { grid-template-columns: 1fr; }
  .pf-grid { grid-template-columns: 1fr; row-gap: 30px; }
  .pf-bottom { justify-content: center; text-align: center; }
  .fw-2, .fw-4 { display: none; }
  .footer-meta { justify-content: center; text-align: center; }
  .b-band-grid { grid-template-columns: repeat(2, 1fr); row-gap: 24px; }
  .b-band-item:nth-child(odd) { border-left: none; }
  .t-trust { border-radius: 12px; }
  .t-region { display: none; }
  .p-flow { padding-left: 30px; }
  .p-card { grid-template-columns: 1fr; }
  .p-num { flex-direction: row; grid-row: auto; }
  .p-num-label { writing-mode: horizontal-tb; }
  .p-guarantee-grid { grid-template-columns: 1fr; row-gap: 20px; }
  .p-g-item { border-left: none; }
}

@media (max-width: 560px) {
  .headline { font-size: clamp(2.1rem, 10vw, 3rem); }
  .cta-row .btn, .b-cta-btns .btn { width: 100%; justify-content: center; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat { padding: 0 12px; }
  .stage-tag { padding: 7px 11px; }
  .tag-num { font-size: 0.82rem; }
  .tag-label { font-size: 0.6rem; }
  .motion-toggle { bottom: auto; top: 86px; right: 20px; }
  .stage-controls { gap: 12px; bottom: -4%; }
  .stage-dot { width: 24px; }
  .b-card { padding: 24px 20px 22px; }
}

/* ---------- 减少动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001s !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001s !important;
  }
  .marquee-track { animation: none; }
  #sparks { display: none; }
  .reveal { opacity: 1; transform: none; }
}