/* 浙江京力新材料 — 深色科技感官网样式 */
:root {
  --bg: #070b14;
  --bg-alt: #0b111f;
  --card: #101828;
  --card-border: rgba(148, 163, 184, 0.14);
  --txt: #e8edf5;
  --txt-sub: #94a3b8;
  --orange: #ff7a1a;
  --orange-soft: rgba(255, 122, 26, 0.14);
  --blue: #3b82f6;
  --blue-soft: rgba(59, 130, 246, 0.16);
  --radius: 14px;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--txt);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  line-height: 1.7;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
.container { width: min(1160px, 92%); margin: 0 auto; }

/* ---------- 导航 ---------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  transition: background 0.35s, box-shadow 0.35s, backdrop-filter 0.35s;
}
.nav.scrolled {
  background: rgba(7, 11, 20, 0.82);
  backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 var(--card-border);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark {
  display: grid; place-items: center; width: 38px; height: 38px;
  border-radius: 10px; font-weight: 800; font-size: 15px; color: #fff;
  background: linear-gradient(135deg, var(--orange), #ff9d4d);
  box-shadow: 0 4px 18px rgba(255, 122, 26, 0.4);
}
.brand-text { font-weight: 700; font-size: 16px; letter-spacing: 0.5px; }
.brand-text em { display: block; font-style: normal; font-size: 10px; color: var(--txt-sub); letter-spacing: 1.5px; }
.nav-links { display: flex; align-items: center; gap: 28px; font-size: 15px; }
.nav-links a { color: var(--txt-sub); transition: color 0.25s; position: relative; }
.nav-links a:hover { color: var(--txt); }
.nav-links a:not(.nav-cta)::after {
  content: ""; position: absolute; left: 0; bottom: -6px; width: 0; height: 2px;
  background: var(--orange); transition: width 0.25s;
}
.nav-links a:not(.nav-cta):hover::after { width: 100%; }
.nav-cta {
  color: #fff !important; padding: 9px 20px; border-radius: 99px;
  background: linear-gradient(135deg, var(--orange), #ff9d4d);
  box-shadow: 0 6px 20px rgba(255, 122, 26, 0.35);
}
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--txt); margin: 5px 0; transition: 0.3s; }

/* ---------- Hero ---------- */
/* ---------- 顶部循环视频 ---------- */
.video-hero {
  position: relative; height: 58vh; min-height: 400px;
  overflow: hidden; background: #0a0f1a;
}
/* 背景层：同源视频放大+模糊+压暗 */
.video-hero .v-bg {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; filter: blur(30px) brightness(0.38) saturate(1.2);
  transform: scale(1.2);
}
/* 主视频：原生清晰尺寸居中显示（超采样，画面锐利） */
.video-hero .v-main {
  position: absolute; left: 50%; top: 48%; transform: translate(-50%, -50%);
  width: auto; height: auto; max-width: min(860px, 94vw); max-height: 90%;
  aspect-ratio: 16/9; object-fit: contain;
  border-radius: 14px; background: #000;
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255, 255, 255, 0.12);
}
.video-shade {
  position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(180deg,
    rgba(7, 11, 20, 0.5) 0%, transparent 26%,
    transparent 72%, var(--bg) 100%);
}
.video-tag {
  position: absolute; left: 50%; bottom: 22px; transform: translateX(-50%);
  z-index: 2; white-space: nowrap;
  font-size: 12px; letter-spacing: 0.3em; color: rgba(255, 255, 255, 0.88);
  background: rgba(7, 11, 20, 0.42); backdrop-filter: blur(8px);
  padding: 9px 20px; border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.18);
}
@media (max-width: 640px) {
  .video-hero { height: 46vh; min-height: 320px; }
  .video-tag { font-size: 10.5px; letter-spacing: 0.22em; padding: 7px 14px; }
}

/* ---------- 顶部循环视频结束 ---------- */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; padding: 120px 0 60px; }
.hero-bg {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.05) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 40%, #000 30%, transparent 75%);
}
.hero-glow { position: absolute; border-radius: 50%; filter: blur(110px); opacity: 0.5; pointer-events: none; }
.hero-glow-1 { width: 480px; height: 480px; background: var(--orange-soft); top: -80px; right: -60px; }
.hero-glow-2 { width: 420px; height: 420px; background: var(--blue-soft); bottom: -100px; left: -80px; }
.hero-inner { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items: center; position: relative; }
.hero-tag {
  display: inline-block; font-size: 13px; letter-spacing: 2px; color: var(--orange);
  border: 1px solid rgba(255, 122, 26, 0.4); border-radius: 99px; padding: 6px 16px;
  background: var(--orange-soft); margin-bottom: 22px;
}
.hero h1 { font-size: clamp(34px, 4.6vw, 58px); line-height: 1.22; font-weight: 800; letter-spacing: 1px; }
.grad-text {
  background: linear-gradient(100deg, var(--orange) 20%, #ffb25e 60%, var(--blue));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub { color: var(--txt-sub); font-size: 16.5px; max-width: 540px; margin: 22px 0 30px; }
.hero-actions { display: flex; gap: 14px; margin-bottom: 44px; }
.btn {
  display: inline-block; padding: 13px 30px; border-radius: 10px; font-size: 15.5px;
  font-weight: 600; cursor: pointer; border: 1px solid transparent; transition: 0.25s;
}
.btn-primary { background: linear-gradient(135deg, var(--orange), #ff9d4d); color: #fff; box-shadow: 0 10px 28px rgba(255, 122, 26, 0.35); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 34px rgba(255, 122, 26, 0.45); }
.btn-ghost { border-color: var(--card-border); color: var(--txt); background: rgba(148, 163, 184, 0.06); }
.btn-ghost:hover { border-color: var(--blue); color: var(--blue); }
.hero-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; max-width: 560px; }
.stat { border-left: 2px solid rgba(255, 122, 26, 0.5); padding-left: 14px; }
.stat strong { display: block; font-size: clamp(20px, 2.4vw, 30px); font-weight: 800; color: #fff; font-variant-numeric: tabular-nums; }
.stat span { font-size: 12.5px; color: var(--txt-sub); }
.hero-visual { position: relative; }
.hero-card {
  border-radius: 22px; overflow: hidden; border: 1px solid var(--card-border);
  box-shadow: var(--shadow); transform: rotate(2deg);
  background: linear-gradient(160deg, #16203a, #0c1322);
}
.hero-card img { width: 100%; aspect-ratio: 1612/1004; object-fit: cover; }
.hero-chip {
  position: absolute; padding: 10px 16px; border-radius: 12px; font-size: 13px; font-weight: 600;
  background: rgba(13, 19, 34, 0.88); border: 1px solid var(--card-border);
  backdrop-filter: blur(8px); box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}
.hero-chip-1 { top: -18px; left: -14px; color: #7ee08a; animation: float 4s ease-in-out infinite; }
.hero-chip-2 { bottom: -16px; right: -8px; color: #ffd28a; animation: float 4s ease-in-out 1.2s infinite; }
@keyframes float { 50% { transform: translateY(-9px); } }
.hero-scroll {
  position: absolute; left: 50%; bottom: 26px; transform: translateX(-50%);
  width: 26px; height: 42px; border: 2px solid rgba(148, 163, 184, 0.5); border-radius: 14px;
}
.hero-scroll span {
  position: absolute; left: 50%; top: 8px; width: 4px; height: 9px; margin-left: -2px;
  border-radius: 2px; background: var(--orange); animation: scrollDot 1.6s ease-in-out infinite;
}
@keyframes scrollDot { 70% { transform: translateY(14px); opacity: 0.2; } 100% { transform: translateY(0); opacity: 1; } }

/* ---------- 通用区块 ---------- */
.section { padding: 96px 0; position: relative; }
.section-alt { background: var(--bg-alt); }
.sec-tag { font-size: 13px; letter-spacing: 3px; color: var(--orange); font-weight: 600; margin-bottom: 14px; }
.sec-title { font-size: clamp(26px, 3.2vw, 40px); font-weight: 800; line-height: 1.3; margin-bottom: 34px; }

/* ---------- 关于 ---------- */
.about-grid { display: grid; grid-template-columns: 0.92fr 1.08fr; gap: 56px; align-items: center; }
.about-media { position: relative; }
.about-media img { border-radius: var(--radius); border: 1px solid var(--card-border); box-shadow: var(--shadow); width: 100%; }
.about-badge {
  position: absolute; right: -16px; bottom: -20px; background: linear-gradient(135deg, var(--orange), #ff9d4d);
  color: #fff; border-radius: var(--radius); padding: 14px 22px; box-shadow: 0 12px 30px rgba(255, 122, 26, 0.4);
  text-align: center;
}
.about-badge strong { display: block; font-size: 26px; font-weight: 800; line-height: 1.1; }
.about-badge span { font-size: 12px; opacity: 0.92; }
.about-copy p { color: var(--txt-sub); margin-bottom: 16px; font-size: 15.5px; }
.about-copy strong { color: var(--txt); }
.cert-badges { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 8px; }
.cert-badges span {
  font-size: 12.5px; font-weight: 600; padding: 7px 14px; border-radius: 8px;
  background: var(--blue-soft); color: #9dc1fb; border: 1px solid rgba(59, 130, 246, 0.3);
}

/* ---------- 产品 ---------- */
.prod-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.prod-card {
  background: var(--card); border: 1px solid var(--card-border); border-radius: var(--radius);
  overflow: hidden; transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}
.prod-card:hover { transform: translateY(-7px); border-color: rgba(255, 122, 26, 0.45); box-shadow: 0 22px 44px rgba(0, 0, 0, 0.5); }
.prod-img { overflow: hidden; aspect-ratio: 4/3; }
.prod-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.prod-card:hover .prod-img img { transform: scale(1.07); }

/* ---------- 产品（升级版：筛选 + 目录卡） ---------- */
.sec-sub { color: var(--txt-sub); font-size: 14px; margin: -18px 0 26px; }
.prod-chips { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 30px; }
.chip {
  padding: 9px 20px; border-radius: 99px; font-size: 14px; cursor: pointer;
  background: rgba(148, 163, 184, 0.08); border: 1px solid var(--card-border);
  color: var(--txt-sub); transition: 0.25s; font-family: inherit;
}
.chip:hover { color: var(--txt); border-color: rgba(255, 122, 26, 0.5); }
.chip.active {
  background: linear-gradient(135deg, var(--orange), #ff9d4d); color: #fff;
  border-color: transparent; box-shadow: 0 6px 18px rgba(255, 122, 26, 0.35);
}
.prod-grid-v2 { grid-template-columns: repeat(4, 1fr); gap: 18px; }
.prod-card.hide { display: none; }
.prod-img { position: relative; }
.prod-std {
  position: absolute; top: 10px; left: 10px; z-index: 2;
  font-size: 11px; font-weight: 700; letter-spacing: 0.5px; color: #9dc1fb;
  background: rgba(7, 11, 20, 0.78); border: 1px solid rgba(59, 130, 246, 0.4);
  padding: 4px 10px; border-radius: 6px; backdrop-filter: blur(6px);
}
.prod-body { padding: 15px 16px 17px; }
.prod-body h3 { font-size: 15.5px; padding: 0; line-height: 1.4; }
.prod-en {
  font-size: 11.5px; color: rgba(148, 163, 184, 0.75); margin: 3px 0 10px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.prod-specs { display: flex; flex-wrap: wrap; gap: 6px; padding: 0; margin-bottom: 12px; }
.prod-specs span {
  font-size: 11px; padding: 3px 9px; border-radius: 6px;
  background: rgba(148, 163, 184, 0.1); color: var(--txt-sub);
}
.prod-foot { display: flex; align-items: center; justify-content: space-between; gap: 8px; border-top: 1px solid var(--card-border); padding-top: 12px; }
.prod-price strong { font-size: 16.5px; color: var(--orange); font-variant-numeric: tabular-nums; }
.prod-price span { font-size: 11px; color: var(--txt-sub); display: block; }
.btn-inquiry {
  flex-shrink: 0; font-size: 13px; font-weight: 600; color: var(--blue);
  border: 1px solid rgba(59, 130, 246, 0.45); padding: 7px 14px; border-radius: 8px;
  transition: 0.25s; white-space: nowrap;
}
.btn-inquiry:hover { background: var(--blue); color: #fff; box-shadow: 0 6px 16px rgba(59, 130, 246, 0.4); }

/* ---------- 生产流程 ---------- */
.flow { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; counter-reset: step; }
.flow-step {
  position: relative; background: var(--card); border: 1px solid var(--card-border);
  border-radius: var(--radius); padding: 22px 16px 18px; transition: 0.3s;
}
.flow-step:hover { border-color: rgba(255, 122, 26, 0.5); transform: translateY(-5px); }
.f-num {
  font-size: 26px; font-weight: 800; line-height: 1;
  background: linear-gradient(135deg, var(--orange), #ffb25e);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.flow-step h4 { font-size: 15.5px; margin: 12px 0 6px; }
.flow-step p { font-size: 12.5px; color: var(--txt-sub); line-height: 1.6; }

/* ---------- FAQ ---------- */
.faq-wrap { max-width: 860px; }
.faq-list { display: grid; gap: 12px; }
.faq-item {
  background: var(--card); border: 1px solid var(--card-border); border-radius: var(--radius);
  overflow: hidden; transition: border-color 0.3s;
}
.faq-item[open] { border-color: rgba(255, 122, 26, 0.45); }
.faq-item summary {
  list-style: none; cursor: pointer; display: flex; justify-content: space-between;
  align-items: center; gap: 14px; padding: 17px 20px; font-size: 15.5px; font-weight: 600;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary i {
  font-style: normal; font-size: 20px; font-weight: 300; color: var(--orange);
  transition: transform 0.3s; flex-shrink: 0;
}
.faq-item[open] summary i { transform: rotate(45deg); }
.faq-item p { padding: 0 20px 18px; color: var(--txt-sub); font-size: 14.5px; line-height: 1.8; }

/* ---------- 应用案例 Bento 网格 ---------- */
.bento { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; margin-top: 40px; }
.bento-item {
  position: relative; overflow: hidden; border-radius: var(--radius);
  border: 1px solid var(--card-border); box-shadow: var(--shadow); background: #0b1220; min-height: 0;
}
.bento-item img {
  width: 100%; height: 100%; object-fit: cover; display: block;
  transition: transform 0.6s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.bento-item:hover img { transform: scale(1.05); }
.bento-item.big { grid-column: span 3; aspect-ratio: 16/10; }
.bento-item.small { grid-column: span 2; aspect-ratio: 4/3; }
.bento-item.wide { grid-column: 1 / -1; aspect-ratio: 21/8; }
.bento-item.wide-sea { grid-column: 1 / -1; aspect-ratio: 2/1; }
.bento-item figcaption {
  position: absolute; inset: auto 0 0 0; padding: 48px 18px 14px;
  background: linear-gradient(transparent, rgba(4, 8, 18, 0.9));
  display: flex; flex-direction: column; gap: 2px;
}
.bento-item em { font-style: normal; font-size: 11.5px; letter-spacing: 0.16em; color: #ffb27a; text-transform: uppercase; }
.bento-item strong { font-size: 17px; color: #fff; }
.bento-item figcaption span { font-size: 12.5px; color: rgba(255, 255, 255, 0.62); }
.shots-head { margin: 52px 0 22px; display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; }
.shots-head h3 { font-size: 22px; color: var(--txt); }
.shots-head h3 span { font-size: 12px; letter-spacing: 0.18em; color: var(--orange); margin-left: 6px; }
.shots-head p { font-size: 13.5px; color: var(--txt-sub); }

/* ---------- 产品实拍全家福 ---------- */
.shots-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.shot-item {
  position: relative; border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--card-border); box-shadow: var(--shadow); background: #dfe3ea;
}
.shot-item img { width: 100%; aspect-ratio: 4/5; object-fit: cover; transition: transform 0.55s; display: block; }
.shot-item:hover img { transform: scale(1.045); }
.shot-item figcaption {
  position: absolute; inset: auto 0 0 0; padding: 38px 13px 12px;
  background: linear-gradient(transparent, rgba(5, 8, 15, 0.9));
}
.shot-item strong { display: block; font-size: 14.5px; }
.shot-item span { font-size: 11.5px; color: #ffb27a; }
.shots-cta {
  margin-top: 26px; display: flex; justify-content: space-between; align-items: center;
  gap: 16px; flex-wrap: wrap; padding: 18px 24px; border-radius: var(--radius);
  background: rgba(148, 163, 184, 0.07); border: 1px dashed rgba(255, 122, 26, 0.4);
}
.shots-cta span { color: var(--txt-sub); font-size: 14px; }
.shots-cta a { font-weight: 700; color: var(--orange); font-size: 15px; }
.shots-cta a:hover { text-decoration: underline; }
.case-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.case-item {
  position: relative; border-radius: var(--radius); overflow: hidden; aspect-ratio: 4/4.6;
  border: 1px solid var(--card-border);
}
.case-item.big { grid-column: span 2; grid-row: span 2; aspect-ratio: auto; }
.case-more {
  display: flex; flex-direction: column; justify-content: center; align-items: flex-start;
  gap: 8px; border-radius: var(--radius); padding: 22px;
  background: linear-gradient(150deg, rgba(255, 122, 26, 0.16), rgba(59, 130, 246, 0.12));
  border: 1px dashed rgba(255, 122, 26, 0.45); transition: 0.3s;
}
.case-more:hover { border-style: solid; border-color: var(--orange); transform: translateY(-5px); }
.cm-ico { font-size: 26px; }
.case-more strong { font-size: 16.5px; }
.case-more p { font-size: 12.5px; color: var(--txt-sub); line-height: 1.6; }
.case-more em { font-style: normal; font-size: 13.5px; font-weight: 700; color: var(--orange); margin-top: 4px; }
.case-item img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.55s; }
.case-item:hover img { transform: scale(1.08); }
.case-item figcaption {
  position: absolute; inset: auto 0 0 0; padding: 40px 16px 14px;
  background: linear-gradient(transparent, rgba(5, 8, 15, 0.92));
}
.case-item strong { display: block; font-size: 15.5px; }
.case-item span { font-size: 12px; color: #ffb27a; }

/* ---------- 市场 ---------- */
.market-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 56px; align-items: start; }
.market-copy p { color: var(--txt-sub); margin-bottom: 20px; }
.market-chips { display: flex; flex-wrap: wrap; gap: 9px; margin-bottom: 30px; }
.market-chips span {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 14px; border-radius: 99px; font-size: 13px;
  background: rgba(148, 163, 184, 0.08); border: 1px solid var(--card-border);
}
.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.dot-o { background: var(--orange); box-shadow: 0 0 8px rgba(255, 122, 26, 0.7); }
.dot-b { background: var(--blue); box-shadow: 0 0 8px rgba(59, 130, 246, 0.7); }
.mbar { display: grid; grid-template-columns: 110px 1fr 44px; align-items: center; gap: 12px; margin-bottom: 15px; font-size: 13.5px; }
.mbar-label { color: var(--txt-sub); text-align: right; }
.mbar-track { height: 10px; border-radius: 99px; background: rgba(148, 163, 184, 0.12); overflow: hidden; }
.mbar-fill { height: 100%; width: 0; border-radius: 99px; background: linear-gradient(90deg, var(--orange), #ffb25e); transition: width 1.2s cubic-bezier(0.22, 1, 0.36, 1); }
.mbar:nth-child(even) .mbar-fill { background: linear-gradient(90deg, var(--blue), #7cb0ff); }
.mbar-val { font-weight: 700; font-variant-numeric: tabular-nums; }
.trade-card {
  background: var(--card); border: 1px solid var(--card-border); border-radius: var(--radius);
  padding: 28px; box-shadow: var(--shadow);
}
.trade-card h4 { font-size: 17px; margin-bottom: 16px; padding-bottom: 12px; border-bottom: 1px solid var(--card-border); }
.trade-card li { list-style: none; color: var(--txt-sub); font-size: 14.5px; padding: 9px 0 9px 4px; border-bottom: 1px dashed rgba(148, 163, 184, 0.12); }
.trade-card li:last-child { border-bottom: 0; }
.trade-card strong { color: #ffb27a; margin-right: 6px; }

/* ---------- 联系 ---------- */
.contact-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 56px; align-items: start; }
.contact-cards { display: grid; gap: 14px; margin-top: 10px; }
.c-card {
  display: flex; gap: 16px; align-items: flex-start;
  background: var(--card); border: 1px solid var(--card-border); border-radius: var(--radius); padding: 18px 20px;
}
.c-ico { font-size: 22px; margin-top: 2px; }
.c-card strong { font-size: 15px; }
.c-card p { color: var(--txt-sub); font-size: 14px; margin-top: 2px; }
.inquiry-form {
  background: var(--card); border: 1px solid var(--card-border); border-radius: var(--radius);
  padding: 32px; box-shadow: var(--shadow);
}
.inquiry-form h3 { font-size: 20px; margin-bottom: 20px; }
.inquiry-form label { display: block; font-size: 13.5px; color: var(--txt-sub); margin-bottom: 15px; }
.f-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.inquiry-form input, .inquiry-form select, .inquiry-form textarea {
  width: 100%; margin-top: 7px; padding: 12px 14px; border-radius: 9px; font-size: 15px;
  background: rgba(7, 11, 20, 0.65); border: 1px solid rgba(148, 163, 184, 0.22);
  color: var(--txt); outline: none; transition: border-color 0.25s, box-shadow 0.25s;
  font-family: inherit;
}
.inquiry-form input:focus, .inquiry-form select:focus, .inquiry-form textarea:focus {
  border-color: var(--orange); box-shadow: 0 0 0 3px rgba(255, 122, 26, 0.15);
}
.inquiry-form textarea { resize: vertical; }
.btn-block { width: 100%; margin-top: 4px; }
.f-msg { margin-top: 12px; font-size: 14px; min-height: 20px; }
.f-msg.ok { color: #7ee08a; }
.f-msg.err { color: #ff8a8a; }

/* ---------- 页脚 ---------- */
.footer { border-top: 1px solid var(--card-border); padding: 40px 0; background: #05080f; }
.footer-inner { display: flex; flex-direction: column; gap: 10px; align-items: center; text-align: center; }
.f-brand { display: flex; align-items: center; gap: 12px; }
.f-brand p { font-size: 11px; color: var(--txt-sub); letter-spacing: 1.5px; }
.f-addr { color: var(--txt-sub); font-size: 13.5px; }
.f-copy { color: rgba(148, 163, 184, 0.55); font-size: 12.5px; }

/* ---------- 滚动渐入（渐进增强：无 JS 时内容直接可见） ---------- */
.reveal { transition: opacity 0.7s ease, transform 0.7s ease; }
html.js .reveal { opacity: 0; transform: translateY(26px); }
html.js .reveal.visible { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  /* 导航折叠提前到 860px：避免 641-760px 宽度下导航项被挤出裁切 */
  .nav-links {
    position: fixed; inset: 68px 0 auto 0; flex-direction: column; gap: 0;
    background: rgba(7, 11, 20, 0.97); backdrop-filter: blur(16px);
    display: none; padding: 10px 0 18px; border-bottom: 1px solid var(--card-border);
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 13px 6%; width: 100%; }
  .nav-toggle { display: block; }
  .hero-inner, .about-grid, .market-grid, .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .prod-grid { grid-template-columns: repeat(2, 1fr); }
  .case-grid { grid-template-columns: repeat(2, 1fr); }
  .flow { grid-template-columns: repeat(3, 1fr); }
  .hero-visual { max-width: 480px; margin: 0 auto; }
  .about-badge { right: 8px; }
  .hero-scroll { display: none; }
  .bento-item.big { grid-column: span 6; }
  .bento-item.small { grid-column: span 3; }
  .bento-item.wide { aspect-ratio: 16/9; }
}
@media (max-width: 640px) {
  .prod-grid, .case-grid { grid-template-columns: 1fr; }
  .shots-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .shot-item strong { font-size: 13.5px; }
  .bento-item.small { grid-column: span 6; }
  .bento-item.wide { aspect-ratio: 4/3; }
  .bento-item strong { font-size: 15.5px; }
  .shots-head { margin-top: 40px; }
  .flow { grid-template-columns: repeat(2, 1fr); }
  .case-item.big { grid-column: span 1; grid-row: span 1; aspect-ratio: 4/4.6; }
  .f-row { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 18px; }
  .section { padding: 68px 0; }
  .mbar { grid-template-columns: 92px 1fr 40px; font-size: 12.5px; }
}

/* ---------- 语言切换 ---------- */
.lang-link {
  font-size: 13px; font-weight: 700; letter-spacing: 0.5px;
  padding: 5px 11px; border: 1px solid var(--card-border); border-radius: 8px;
}
.lang-link:hover { border-color: var(--orange); color: var(--orange) !important; }

/* ---------- honeypot 反垃圾字段（屏幕外隐藏，机器人可见） ---------- */
.f-hp { position: absolute !important; left: -9999px !important; top: -9999px !important; height: 1px; width: 1px; overflow: hidden; }

/* ---------- 设备实力数据条 ---------- */
.fac-stats { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; margin-top: 16px; }
.fac-stat {
  background: var(--card); border: 1px solid var(--card-border);
  border-radius: var(--radius); padding: 16px 16px 14px;
}
.fac-stat strong {
  display: block; font-size: 21px; font-weight: 800; color: var(--orange);
  font-variant-numeric: tabular-nums; letter-spacing: -0.4px;
}
.fac-stat span { font-size: 12.5px; color: var(--txt-sub); }
@media (max-width: 960px) { .fac-stats { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 640px) { .fac-stats { grid-template-columns: repeat(2, 1fr); gap: 10px; } .fac-stat strong { font-size: 19px; } }

/* ---------- WhatsApp 浮动咨询按钮 ---------- */
.wa-float {
  position: fixed; right: 18px; bottom: 18px; z-index: 999;
  width: 56px; height: 56px; border-radius: 50%;
  background: #25d366; display: grid; place-items: center;
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.45);
  transition: transform 0.2s ease;
}
.wa-float:hover { transform: scale(1.1); }
.wa-float svg { width: 30px; height: 30px; display: block; }
@media (max-width: 640px) {
  .wa-float { right: 14px; bottom: 14px; width: 52px; height: 52px; }
  .wa-float svg { width: 28px; height: 28px; }
}