/* ============================================================
   鑫磁科技 — 传统制造企业风格
   主色：企业蓝 #1a5290 / 深蓝 #16335c / 企业红 #c8161d
   白底 + 灰底交替，方正稳重
   ============================================================ */

:root {
  --blue-dark: #16335c;
  --blue: #1a5290;
  --blue-light: #2a6fb0;
  --blue-soft: #eaf1f8;
  --red: #c8161d;
  --red-dark: #a01217;
  --gold: #d4a843;

  --bg: #ffffff;
  --bg-alt: #f4f6f9;
  --bg-deep: #f0f3f7;
  --ink: #1c2733;
  --ink-soft: #545f6d;
  --ink-dim: #8893a3;
  --line: #e3e8ef;
  --line-strong: #cfd8e3;

  --radius: 4px;
  --radius-sm: 3px;
  --shadow: 0 4px 18px -8px rgba(22, 51, 92, 0.18);
  --shadow-hover: 0 10px 30px -10px rgba(22, 51, 92, 0.28);
  --maxw: 1200px;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: 'Noto Sans SC', 'Microsoft YaHei', 'PingFang SC', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 120px; }

body {
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  font-size: 15px;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; transition: color .2s var(--ease); }
a:hover { color: var(--blue); }
ul { list-style: none; }

.container { width: min(var(--maxw), 92vw); margin-inline: auto; }

/* ===================== 按钮 ===================== */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 13px 32px; border-radius: var(--radius-sm);
  font-weight: 600; font-size: 15px; letter-spacing: .04em;
  border: 2px solid transparent; cursor: pointer;
  transition: all .2s var(--ease);
}
.btn-primary { background: var(--red); color: #fff; border-color: var(--red); }
.btn-primary:hover { background: var(--red-dark); border-color: var(--red-dark); color: #fff; transform: translateY(-1px); }
.btn-ghost { border-color: var(--blue); color: var(--blue); background: transparent; }
.btn-ghost:hover { background: var(--blue); color: #fff; }
.btn-block { width: 100%; }

/* ===================== 顶部信息条 ===================== */
.topbar {
  background: var(--blue-dark); color: rgba(255, 255, 255, .82);
  font-size: 13px; border-bottom: 1px solid rgba(255, 255, 255, .08);
}
.topbar .container { display: flex; align-items: center; justify-content: space-between; height: 38px; }
.topbar-info { display: flex; gap: 26px; }
.topbar-info span { display: inline-flex; align-items: center; gap: 6px; }
.topbar-info a:hover { color: #fff; }
.topbar-info .tb-label { color: var(--gold); font-weight: 600; }

/* ===================== 主导航 ===================== */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: #fff;
  border-bottom: 3px solid var(--blue);
  box-shadow: 0 2px 12px -6px rgba(22, 51, 92, 0.15);
}
.nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 78px; }

.brand { display: flex; align-items: center; gap: 12px; color: var(--blue-dark); }
.brand-mark { display: grid; place-items: center; color: var(--red); }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-text strong { font-size: 22px; font-weight: 900; color: var(--blue-dark); letter-spacing: .02em; }
.brand-text small { font-size: 11px; letter-spacing: .18em; color: var(--ink-dim); font-weight: 600; }

.nav-menu { display: flex; gap: 2px; height: 78px; align-items: center; }
.nav-menu a {
  position: relative; padding: 0 18px; height: 78px; display: inline-flex; align-items: center;
  font-size: 16px; font-weight: 500; color: var(--ink);
  border-bottom: 3px solid transparent; transition: all .2s var(--ease);
}
.nav-menu a:hover { color: var(--blue); }
.nav-menu a.active { color: var(--blue); border-bottom-color: var(--red); font-weight: 600; }

/* —— 产品下拉菜单 —— */
.has-sub { position: relative; height: 78px; display: flex; align-items: center; }
.has-sub > .sub-toggle { padding: 0 18px; }
.has-sub > .sub-toggle::after {
  content: "▾"; font-size: 11px; margin-left: 7px;
  color: var(--ink-dim); display: inline-block;
  transition: transform .25s var(--ease);
}
.has-sub:hover > .sub-toggle::after { transform: rotate(180deg); }
.dropdown {
  position: absolute; top: 100%; left: 0; min-width: 212px;
  background: #fff; border: 1px solid var(--line); border-top: 3px solid var(--blue);
  box-shadow: var(--shadow-hover); z-index: 20;
  opacity: 0; visibility: hidden; transform: translateY(10px);
  transition: opacity .25s var(--ease), transform .25s var(--ease), visibility .25s;
}
.has-sub:hover .dropdown, .has-sub:focus-within .dropdown { opacity: 1; visibility: visible; transform: none; }
.dropdown a {
  display: flex; align-items: center; height: auto;
  padding: 12px 20px; font-size: 14.5px;
  border-left: 3px solid transparent; border-bottom: 1px solid var(--line);
}
.dropdown a:last-child { border-bottom: none; }
.dropdown a:hover { color: var(--blue); background: var(--blue-soft); border-left-color: var(--red); }

.nav-actions { display: flex; align-items: center; gap: 18px; }
.lang-toggle { display: flex; align-items: center; gap: 2px; font-size: 13px; color: var(--ink-dim); }
.lang-btn {
  background: none; border: none; color: var(--ink-dim);
  font: inherit; font-weight: 700; cursor: pointer; padding: 3px 5px;
  border-radius: var(--radius-sm); transition: color .2s;
}
.lang-btn.active { color: var(--blue); }
.lang-btn:hover { color: var(--blue-dark); }
.lang-sep { opacity: .4; }

.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 6px; }
.nav-toggle span { width: 24px; height: 2px; background: var(--blue-dark); transition: transform .3s, opacity .3s; border-radius: 2px; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===================== Hero ===================== */
.hero {
  position: relative; padding: 90px 0 70px;
  background:
    linear-gradient(135deg, rgba(22, 51, 92, .94) 0%, rgba(26, 82, 144, .90) 60%, rgba(42, 111, 176, .85) 100%);
  overflow: hidden;
}
.hero::after {
  /* 斜分割条 */
  content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 50px;
  background: var(--bg);
  clip-path: polygon(0 100%, 100% 100%, 100% 30%, 0 100%);
}
.hero-grid { position: absolute; inset: 0; opacity: .14;
  background-image:
    linear-gradient(rgba(255,255,255,.5) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.5) 1px, transparent 1px);
  background-size: 48px 48px;
}
.hero-inner { position: relative; z-index: 2; max-width: 860px; color: #fff; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 14px; font-weight: 600; letter-spacing: .08em;
  color: #fff; padding: 7px 18px;
  border-left: 4px solid var(--red); background: rgba(255, 255, 255, .1);
  margin-bottom: 26px;
}
.hero-title { font-size: clamp(34px, 5vw, 54px); font-weight: 900; line-height: 1.2; letter-spacing: .01em; color: #fff; }
.hero-title span { display: block; }
.hero-title .accent { color: var(--gold); }
.hero-sub { margin-top: 24px; font-size: clamp(15px, 1.3vw, 17px); color: rgba(255, 255, 255, .88); max-width: 680px; }
.hero-cta { display: flex; gap: 16px; margin-top: 38px; flex-wrap: wrap; }
.hero .btn-ghost { border-color: #fff; color: #fff; }
.hero .btn-ghost:hover { background: #fff; color: var(--blue-dark); border-color: #fff; }

/* 数据条 */
.hero-stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  background: #fff; border-top: 3px solid var(--blue);
  box-shadow: var(--shadow);
}
.hero-stats li {
  padding: 28px 24px; text-align: center;
  border-right: 1px solid var(--line);
  display: flex; flex-direction: column; gap: 6px;
}
.hero-stats li:last-child { border-right: none; }
.hero-stats strong { font-size: clamp(28px, 3vw, 36px); font-weight: 900; color: var(--blue); }
.hero-stats small { font-size: .55em; font-weight: 700; color: var(--red); }
.hero-stats span { font-size: 13px; color: var(--ink-soft); }

/* ===================== 通用区块 ===================== */
.section { padding: 90px 0; position: relative; }
.section.alt { background: var(--bg-alt); }
.section-head { margin-bottom: 50px; max-width: 760px; }
.section-head.center { margin-inline: auto; text-align: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 14px; font-weight: 700; letter-spacing: .08em;
  color: var(--red); margin-bottom: 12px;
}
.eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--red); display: inline-block; }
.eyebrow.light { color: var(--gold); }
.section-title { font-size: clamp(26px, 3vw, 36px); font-weight: 900; color: var(--blue-dark); letter-spacing: .01em; line-height: 1.2; }
.section-desc { margin-top: 14px; color: var(--ink-soft); font-size: 15px; }

/* ===================== 关于我们 ===================== */
.about-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 50px; align-items: center; }
.about-media { position: relative; }
.about-media::before {
  content: ""; position: absolute; top: -14px; left: -14px; right: 22px; bottom: 22px;
  border: 2px solid var(--blue-soft); z-index: 0;
}
.factory-card { position: relative; z-index: 1; background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow); }
.factory-art { background: var(--blue-dark); }
.factory-art svg { width: 100%; height: auto; }
.factory-meta { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); }
.factory-meta > div { background: #fff; padding: 20px; display: flex; flex-direction: column; gap: 4px; text-align: center; }
.factory-meta strong { color: var(--blue); font-size: 20px; font-weight: 900; }
.factory-meta span { font-size: 13px; color: var(--ink-soft); }

.about-body p { color: var(--ink-soft); margin-bottom: 16px; font-size: 15px; text-align: justify; }
.about-body p:first-of-type::first-letter { color: var(--blue); font-weight: 700; }
.about-feats { display: grid; grid-template-columns: 1fr 1fr; gap: 20px 30px; margin-top: 30px; padding-top: 28px; border-top: 1px solid var(--line); }
.about-feats li { display: flex; gap: 14px; }
.feat-ico {
  flex-shrink: 0; width: 42px; height: 42px;
  display: grid; place-items: center; font-weight: 900; font-size: 18px; color: #fff;
  background: var(--blue);
  clip-path: polygon(15% 0, 100% 0, 85% 100%, 0 100%);
}
.about-feats h4 { font-size: 16px; margin-bottom: 4px; color: var(--blue-dark); }
.about-feats p { font-size: 14px; color: var(--ink-soft); margin: 0; }

/* ===================== 服务优势 ===================== */
.advantages {
  background: linear-gradient(135deg, var(--blue-dark) 0%, var(--blue) 100%);
  color: #fff;
}
.advantages .eyebrow { color: var(--gold); }
.advantages .eyebrow::before { background: var(--gold); }
.advantages .section-title { color: #fff; }
.advantages .section-desc { color: rgba(255, 255, 255, .82); }
.adv-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.adv-item {
  background: rgba(255, 255, 255, .08);
  border: 1px solid rgba(255, 255, 255, .14);
  border-top: 3px solid var(--gold);
  padding: 32px 24px; text-align: center;
  transition: transform .25s var(--ease), background .25s var(--ease);
}
.adv-item:hover { transform: translateY(-5px); background: rgba(255, 255, 255, .13); }
.adv-ico {
  display: inline-grid; place-items: center;
  width: 68px; height: 68px; border-radius: 50%;
  background: rgba(255, 255, 255, .14); font-size: 30px;
  margin-bottom: 18px;
}
.adv-item h3 { font-size: 17px; color: #fff; margin-bottom: 8px; }
.adv-item p { font-size: 13.5px; color: rgba(255, 255, 255, .78); }

/* ===================== 产品中心 ===================== */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.product-card {
  background: #fff; border: 1px solid var(--line);
  transition: box-shadow .3s var(--ease), transform .3s var(--ease);
  overflow: hidden;
}
.product-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-hover); }

.product-visual {
  height: 240px; display: grid; place-items: center; position: relative;
  background:
    repeating-linear-gradient(0deg, var(--bg-alt) 0 1px, transparent 1px 28px),
    repeating-linear-gradient(90deg, var(--bg-alt) 0 1px, transparent 1px 28px),
    #fff;
  border-bottom: 3px solid var(--blue);
}
/* 本地产品照片占位：放入 images/products/ 下的照片后自动覆盖插画，未放入时显示插画 */
.prod-img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: 2; }

/* —— R 型卷绕铁芯：跑道环 + 叠片纹理 —— */
.r-core { position: relative; width: 220px; height: 130px; display: grid; place-items: center; }
.r-ring {
  position: relative;
  width: 220px; height: 130px;
  border-radius: 65px;
  background: repeating-linear-gradient(90deg, var(--blue-light) 0 3px, var(--blue) 3px 6px);
  box-shadow: inset 0 0 0 1px rgba(0,0,0,.12), 0 6px 16px -8px rgba(22,51,92,.4);
}
.r-ring::after {
  content: ""; position: absolute; inset: 24px;
  background: #fff; border-radius: 42px;
  box-shadow: inset 0 0 0 1px var(--line-strong);
}

/* —— CD 型卷绕铁芯：双 C 对合 —— */
.cd-core { position: relative; width: 200px; height: 140px; display: flex; gap: 16px; align-items: center; justify-content: center; }
.cd-half {
  width: 80px; height: 130px;
  background: repeating-linear-gradient(0deg, var(--blue-light) 0 4px, var(--blue) 4px 8px);
  box-shadow: inset 0 0 0 1px rgba(0,0,0,.12);
}
.cd-left {
  clip-path: polygon(0 0, 100% 0, 100% 26%, 32% 26%, 32% 74%, 100% 74%, 100% 100%, 0 100%);
}
.cd-right {
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%, 0 74%, 68% 74%, 68% 26%, 0 26%);
}

/* —— SD 型卷绕铁芯：多对合结构 —— */
.sd-core { position: relative; width: 210px; height: 150px; display: flex; gap: 14px; align-items: center; justify-content: center; }
.sd-half {
  width: 84px; height: 150px;
  background: repeating-linear-gradient(0deg, var(--blue-light) 0 4px, var(--blue) 4px 8px);
  box-shadow: inset 0 0 0 1px rgba(0,0,0,.12);
}
.sd-left {
  clip-path: polygon(0 0, 100% 0, 100% 20%, 30% 20%, 30% 40%, 100% 40%, 100% 60%, 30% 60%, 30% 80%, 100% 80%, 100% 100%, 0 100%);
}
.sd-right {
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%, 0 80%, 70% 80%, 70% 60%, 0 60%, 0 40%, 70% 40%, 70% 20%, 0 20%);
}

/* —— 叠片型铁芯：多层硅钢片叠装 —— */
.lam-core {
  position: relative; width: 210px; height: 140px; border-radius: 6px;
  background: repeating-linear-gradient(180deg, var(--blue-light) 0 3px, var(--blue) 3px 6px);
  box-shadow: inset 0 0 0 1px rgba(0,0,0,.15), 0 6px 16px -8px rgba(22,51,92,.4);
}
.lam-core::after {
  content: ""; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  width: 110px; height: 46px; background: #fff; border-radius: 3px;
  box-shadow: inset 0 0 0 1px var(--line-strong);
}

/* —— 环型铁芯：闭合环状卷绕 —— */
.ring-core { position: relative; width: 150px; height: 150px; display: grid; place-items: center; }
.ring-circle {
  position: relative; width: 150px; height: 150px; border-radius: 50%;
  background: repeating-conic-gradient(var(--blue-light) 0 12deg, var(--blue) 12deg 24deg);
  box-shadow: inset 0 0 0 1px rgba(0,0,0,.12), 0 6px 16px -8px rgba(22,51,92,.4);
}
.ring-circle::after {
  content: ""; position: absolute; inset: 40px; background: #fff; border-radius: 50%;
  box-shadow: inset 0 0 0 1px var(--line-strong);
}

.product-body { padding: 28px; }
.tag {
  display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: .08em;
  color: #fff; background: var(--blue);
  padding: 4px 14px; margin-bottom: 14px;
}
.tag.tag-alt { background: var(--red); }
.product-body h3 { font-size: 20px; margin-bottom: 12px; color: var(--blue-dark); }
.product-body > p { color: var(--ink-soft); font-size: 14.5px; margin-bottom: 20px; }
.spec-list { border-top: 1px solid var(--line); padding-top: 16px; }
.spec-list li {
  display: flex; justify-content: space-between; gap: 16px; font-size: 14px;
  padding: 7px 0; border-bottom: 1px dashed var(--line);
}
.spec-list li:last-child { border-bottom: none; }
.spec-list span { color: var(--ink-dim); }
.spec-list strong { color: var(--ink); font-weight: 600; }
.spec-list li.spec-feat { flex-direction: column; align-items: stretch; gap: 6px; }
.spec-list li.spec-feat strong { line-height: 1.7; font-weight: 500; color: var(--ink-soft); }

.product-note { text-align: center; margin-top: 44px; color: var(--ink-soft); font-size: 14px; }
.product-note::before, .product-note::after { content: "—"; margin: 0 10px; color: var(--line-strong); }

/* ===================== 应用领域 ===================== */
.app-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.app-item {
  background: #fff; border: 1px solid var(--line);
  padding: 30px 26px; text-align: center;
  transition: all .25s var(--ease);
  position: relative; overflow: hidden;
}
.app-item::before {
  content: ""; position: absolute; left: 0; top: 0; height: 4px; right: 0;
  background: var(--blue); transform: scaleX(0); transform-origin: left; transition: transform .3s var(--ease);
}
.app-item:hover { border-color: var(--blue); box-shadow: var(--shadow-hover); transform: translateY(-3px); }
.app-item:hover::before { transform: scaleX(1); }
.app-ico {
  font-size: 32px; margin-bottom: 14px;
  display: inline-grid; place-items: center; width: 64px; height: 64px;
  background: var(--blue-soft); border-radius: 50%;
}
.app-item h4 { font-size: 17px; margin-bottom: 6px; color: var(--blue-dark); }
.app-item p { font-size: 14px; color: var(--ink-soft); }

/* ===================== 联系我们 ===================== */
.contact {
  background:
    linear-gradient(135deg, var(--blue-dark) 0%, var(--blue) 100%);
  color: #fff;
}
.contact .eyebrow { color: var(--gold); }
.contact .eyebrow::before { background: var(--gold); }
.contact-grid { max-width: 860px; }
.contact-info { max-width: 100%; }
.contact-info h2 { font-size: clamp(24px, 2.8vw, 32px); font-weight: 900; margin: 6px 0 16px; line-height: 1.3; color: #fff; }
.contact-info > p { color: rgba(255, 255, 255, .85); margin-bottom: 34px; }
.contact-list {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px;
}
.contact-list li {
  display: flex; flex-direction: column; gap: 8px;
  padding: 22px 24px; background: rgba(255, 255, 255, .08);
  border-left: 3px solid var(--gold);
}
.ci-label {
  font-size: 13px; letter-spacing: .04em;
  color: var(--gold); font-weight: 600;
}
.contact-list a, .contact-list li > span:last-child { font-size: 17px; color: #fff; font-weight: 500; word-break: break-word; }
.contact-list a:hover { color: var(--gold); }

/* ===================== 页脚 ===================== */
.site-footer { background: var(--blue-dark); color: rgba(255, 255, 255, .7); padding: 50px 0 0; }
.footer-inner {
  display: flex; justify-content: space-between; align-items: flex-start; gap: 30px; flex-wrap: wrap;
  padding-bottom: 30px; border-bottom: 1px solid rgba(255, 255, 255, .1);
}
.footer-brand { display: flex; flex-direction: column; gap: 8px; max-width: 380px; }
.footer-brand strong { font-size: 22px; color: #fff; }
.footer-brand span { color: rgba(255, 255, 255, .6); font-size: 14px; }
.footer-nav { display: flex; gap: 28px; flex-wrap: wrap; align-items: center; height: 100%; }
.footer-nav a { color: rgba(255, 255, 255, .75); font-size: 15px; }
.footer-nav a:hover { color: var(--gold); }
.footer-bottom { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding: 18px 0; color: rgba(255, 255, 255, .5); font-size: 13px; }

/* ===================== 返回顶部 ===================== */
.to-top {
  position: fixed; right: 24px; bottom: 24px; z-index: 90;
  width: 46px; height: 46px;
  background: var(--red); color: #fff; font-size: 20px; font-weight: 700;
  display: grid; place-items: center;
  opacity: 0; pointer-events: none; transition: opacity .3s, background .2s;
  box-shadow: 0 6px 20px -6px rgba(200, 22, 29, .6);
}
.to-top.show { opacity: 1; pointer-events: auto; }
.to-top:hover { background: var(--red-dark); }

/* ===================== 滚动入场动画 ===================== */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ===================== 响应式 ===================== */
@media (max-width: 920px) {
  .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .app-grid { grid-template-columns: repeat(2, 1fr); }
  .adv-grid { grid-template-columns: repeat(2, 1fr); }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .about-media { max-width: 480px; margin-inline: auto; }
  .contact-list { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .topbar-info span:not(:first-child) { display: none; }
  .nav-menu {
    position: fixed; top: 116px; left: 0; right: 0;
    flex-direction: column; gap: 0; height: auto;
    background: #fff; padding: 8px 0;
    border-top: 1px solid var(--line); border-bottom: 3px solid var(--blue);
    transform: translateY(-160%); transition: transform .35s var(--ease);
    max-height: calc(100vh - 116px); overflow-y: auto; box-shadow: var(--shadow);
  }
  .nav-menu.open { transform: none; }
  .nav-menu a { height: 50px; border-bottom: 1px solid var(--line); padding: 0 20px; }
  .nav-menu a.active { border-bottom-color: var(--line); border-left: 3px solid var(--red); }
  .nav-toggle { display: flex; }
  .has-sub { height: auto; width: 100%; flex-direction: column; align-items: stretch; }
  .has-sub > .sub-toggle { height: 50px; }
  .has-sub > .sub-toggle::after { display: none; }
  .dropdown { position: static; min-width: 0; opacity: 1; visibility: visible; transform: none; border: none; border-bottom: 1px solid var(--line); box-shadow: none; background: var(--bg-alt); }
  .dropdown a { height: 46px; padding-left: 34px; font-size: 14px; }
  .dropdown a:hover { background: transparent; }
  .hero { padding: 60px 0 70px; }
  .hero::after { display: none; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .hero-stats li:nth-child(2) { border-right: none; }
  .hero-stats li:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .section { padding: 64px 0; }
  .about-feats { grid-template-columns: 1fr; }
}

@media (max-width: 520px) {
  .app-grid { grid-template-columns: 1fr; }
  .adv-grid { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: 1fr; }
  .factory-meta { grid-template-columns: 1fr; }
  .hero-cta .btn { flex: 1; }
  .footer-inner { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}