/* ============================================================
   晟泰科技 企业官网 · 共享样式  style.css  v20260927b
   风格：简洁清新 · 浅底大留白 · 新能源色彩点缀（蓝/绿/黄）
   品牌色（取自 LOGO）：藏蓝 #2B5876（点缀主色）/ 明黄 #F5B301（高亮）
   新能源绿：#1FA05A（绿色低碳语义色，用于图标/标签/渐变点缀）
   辅助：钢蓝 #3E7CA8 / 浅蓝底 #EAF1F7 / 银灰 #F5F7FA / 浅青灰 #F6F9F7
   文字：深灰 #1F2937
   ============================================================ */

:root {
  --brand: #2B5876;        /* 藏蓝（LOGO 主色） */
  --brand-deep: #1F4360;
  --brand-light: #EAF1F7;
  --accent: #F5B301;       /* 明黄（LOGO 辅色） */
  --accent-light: #FDF3D7;
  --blue: #3E7CA8;         /* 钢蓝，与藏蓝同族 */
  --blue-light: #E8F1F8;
  --green: #1FA05A;        /* 新能源绿 */
  --green-deep: #0B6B3A;
  --green-light: #E4F5EB;
  --gray-bg: #F5F7FA;
  --mint-bg: #F6F9F7;
  --dark: #1F2937;
  --text: #3A4350;
  --text-light: #6B7280;
  --white: #FFFFFF;
  --border: #E7ECF0;
  --shadow-sm: 0 2px 10px rgba(31, 51, 64, .05);
  --shadow-md: 0 10px 30px rgba(31, 51, 64, .08);
  --shadow-lg: 0 18px 48px rgba(31, 51, 64, .12);
  --radius: 14px;
  --radius-sm: 10px;
  --nav-h: 72px;
  --container: 1200px;
  --grad-brand: linear-gradient(135deg, #1F4360 0%, #2B5876 55%, #3E7CA8 100%);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* ---------------- 通用按钮 ---------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 30px; border-radius: 999px;
  font-size: 16px; font-weight: 600; letter-spacing: .5px;
  transition: transform .25s ease, box-shadow .25s ease, background .25s ease, color .25s;
  white-space: nowrap;
}
.btn-primary {
  background: var(--grad-brand); color: #fff;
  box-shadow: 0 6px 16px rgba(31, 67, 96, .24);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 22px rgba(31, 67, 96, .32); }
.btn-ghost {
  background: #fff; color: var(--dark);
  border: 1.5px solid var(--border);
}
.btn-ghost:hover { border-color: var(--brand); color: var(--brand); transform: translateY(-2px); }
.btn-outline {
  background: #fff; color: var(--brand);
  border: 1.5px solid var(--brand);
}
.btn-outline:hover { background: var(--brand-light); transform: translateY(-2px); }

/* ---------------- 固定导航栏（常驻白底毛玻璃） ---------------- */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 900;
  height: var(--nav-h);
  display: flex; align-items: center;
  background: rgba(255, 255, 255, .82);
  backdrop-filter: blur(14px) saturate(1.4);
  -webkit-backdrop-filter: blur(14px) saturate(1.4);
  border-bottom: 1px solid transparent;
  transition: box-shadow .3s ease, border-color .3s ease;
}
.navbar.scrolled {
  box-shadow: 0 2px 18px rgba(31, 51, 64, .07);
  border-bottom-color: var(--border);
}
.navbar .container { display: flex; align-items: center; justify-content: space-between; width: 100%; }

.brand { display: flex; align-items: center; gap: 10px; }
.brand-logo { height: 56px; width: auto; display: block; }

.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a {
  padding: 9px 16px; border-radius: 8px;
  font-size: 15.5px; font-weight: 500; color: var(--text);
  transition: color .2s, background .2s;
}
.nav-links a:hover { color: var(--brand); background: var(--brand-light); }
.nav-links a.active { color: var(--brand); font-weight: 600; }
.nav-links a.active::after {
  content: ""; display: block; height: 2.5px; border-radius: 2px;
  background: var(--grad-brand); margin-top: 2px;
}

.nav-phone {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 9px 18px; border-radius: 999px;
  background: var(--grad-brand); color: #fff; font-weight: 600; font-size: 15px;
  box-shadow: 0 4px 12px rgba(31, 67, 96, .24);
  transition: transform .2s, box-shadow .2s;
}
.nav-phone:hover { transform: translateY(-2px); box-shadow: 0 8px 18px rgba(31, 67, 96, .32); }
.nav-phone svg { width: 16px; height: 16px; }

/* 中英文切换胶囊 */
.lang-switch {
  display: inline-flex; align-items: center;
  border: 1.5px solid var(--border); border-radius: 999px;
  overflow: hidden; background: #fff; flex: none;
}
.lang-switch a {
  padding: 5px 13px; font-size: 13px; font-weight: 600;
  color: var(--text-light); line-height: 1.5;
  transition: color .2s, background .2s;
}
.lang-switch a:not(.on):hover { color: var(--brand); background: var(--brand-light); }
.lang-switch a.on { background: var(--grad-brand); color: #fff; }

/* 汉堡按钮 */
.hamburger { display: none; flex-direction: column; gap: 5px; padding: 8px; z-index: 960; }
.hamburger span {
  width: 24px; height: 2.5px; border-radius: 2px; background: var(--dark);
  transition: transform .3s, opacity .3s;
}
.hamburger.open span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

/* ---------------- Hero 首屏（浅底清新） ---------------- */
.hero {
  position: relative; min-height: 92vh;
  display: flex; align-items: center;
  padding: calc(var(--nav-h) + 60px) 0 80px;
  background:
    radial-gradient(900px 480px at 88% 0%, rgba(62, 124, 168, .08), transparent 62%),
    radial-gradient(760px 480px at 6% 96%, rgba(31, 160, 90, .08), transparent 60%),
    radial-gradient(600px 380px at 96% 88%, rgba(245, 179, 1, .06), transparent 60%),
    linear-gradient(180deg, #FBFCFD 0%, #F3F7FA 100%);
  color: var(--dark); overflow: hidden;
}
/* 淡蓝纹理 */
.hero::before {
  content: ""; position: absolute; inset: 0; opacity: .35; pointer-events: none;
  background-image:
    linear-gradient(rgba(43, 88, 118, .06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(43, 88, 118, .06) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 85% 75% at 50% 42%, #000 25%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 85% 75% at 50% 42%, #000 25%, transparent 75%);
}
.hero .container { display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; position: relative; z-index: 2; }

.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 16px; border-radius: 999px; margin-bottom: 22px;
  background: #fff; border: 1px solid rgba(43, 88, 118, .35);
  color: var(--brand); font-size: 14px; font-weight: 500; letter-spacing: 1px;
  box-shadow: var(--shadow-sm);
}
.hero-badge i { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 8px rgba(245,179,1,.8); animation: pulse-dot 2s infinite; }
@keyframes pulse-dot { 0%,100% { transform: scale(1); opacity: 1; } 50% { transform: scale(1.5); opacity: .55; } }

.hero h1 {
  font-size: clamp(32px, 4.2vw, 52px); line-height: 1.28; font-weight: 800; letter-spacing: 1px;
  color: var(--dark);
  margin-bottom: 20px;
}
.hero h1 .hl {
  background: linear-gradient(90deg, #2B5876 0%, #1FA05A 55%, #F5B301 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p.sub {
  font-size: clamp(15px, 1.6vw, 19px); color: var(--text-light);
  max-width: 560px; margin-bottom: 34px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* Hero 右侧：动态电池 */
.hero-visual { position: relative; display: flex; justify-content: center; }
.hero-visual .glow-ring {
  position: absolute; width: 480px; height: 480px; max-width: 100%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(62,124,168,.14) 0%, rgba(245,179,1,.07) 45%, transparent 70%);
  animation: breathe 5s ease-in-out infinite;
}
@keyframes breathe { 0%,100% { transform: scale(1); opacity: .85; } 50% { transform: scale(1.07); opacity: 1; } }
.hero-visual svg.cell { width: min(430px, 88%); height: auto; filter: drop-shadow(0 22px 44px rgba(31, 51, 64, .16)); }

.li-ion { animation: li-flow 3.2s linear infinite; }
.li-ion.d2 { animation-delay: 1.1s; } .li-ion.d3 { animation-delay: 2.2s; }
@keyframes li-flow {
  0% { transform: translateY(0); opacity: 0; }
  12% { opacity: 1; }
  85% { opacity: 1; }
  100% { transform: translateY(-150px); opacity: 0; }
}
.spark { animation: spark-blink 2.4s ease-in-out infinite; }
.spark.s2 { animation-delay: .8s; } .spark.s3 { animation-delay: 1.6s; }
@keyframes spark-blink { 0%,100% { opacity: .25; } 50% { opacity: 1; } }
.float-slow { animation: floaty 6s ease-in-out infinite; }
@keyframes floaty { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }

/* 悬浮标签 */
.hero-tag {
  position: absolute; padding: 9px 16px; border-radius: 12px;
  background: #fff; color: var(--brand);
  font-size: 14px; font-weight: 700; letter-spacing: .5px;
  box-shadow: var(--shadow-md); border: 1px solid var(--border);
  display: flex; align-items: center; gap: 7px;
}
.hero-tag small { display: block; font-size: 11px; font-weight: 400; color: var(--text-light); letter-spacing: 0; }
.hero-tag.t1 { top: 6%; left: -4%; animation: floaty 5.5s ease-in-out infinite; }
.hero-tag.t2 { top: 38%; right: -6%; animation: floaty 6.5s ease-in-out .8s infinite; }
.hero-tag.t3 { bottom: 5%; left: 6%; animation: floaty 7s ease-in-out 1.6s infinite; }
.hero-tag .chip-ico { width: 18px; height: 18px; flex: none; }

/* ---------------- 信任资质条（浅色） ---------------- */
.trust-bar { background: #fff; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 22px 0; }
.trust-bar .container { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.trust-item { display: flex; align-items: center; gap: 10px; font-size: 15px; font-weight: 600; color: var(--dark); letter-spacing: .5px; }
.trust-item svg { width: 22px; height: 22px; color: var(--brand); flex: none; }
.trust-sep { width: 1px; height: 22px; background: var(--border); }

/* ---------------- 区块通用 ---------------- */
section.section { padding: 88px 0; }
section.section.alt { background: var(--mint-bg); }
.sec-head { text-align: center; max-width: 720px; margin: 0 auto 54px; }
.sec-kicker {
  display: inline-block; padding: 5px 16px; border-radius: 999px; margin-bottom: 14px;
  background: var(--brand-light); color: var(--brand);
  font-size: 13.5px; font-weight: 600; letter-spacing: 2px;
}
.sec-kicker.green { background: var(--green-light); color: var(--green-deep); }
.sec-kicker.yellow { background: var(--accent-light); color: #A67C00; }
.sec-head h2 { font-size: clamp(26px, 3vw, 36px); color: var(--dark); font-weight: 800; letter-spacing: 1px; margin-bottom: 12px; }
.sec-head p { color: var(--text-light); font-size: 16.5px; }

/* ---------------- 卡片 ---------------- */
.grid { display: grid; gap: 26px; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: #fff; border-radius: var(--radius); padding: 34px 28px;
  border: 1px solid var(--border); box-shadow: var(--shadow-sm);
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s;
  position: relative; overflow: hidden;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: rgba(43,88,118,.45); }
.card::after {
  content: ""; position: absolute; left: 0; top: 0; width: 100%; height: 3px;
  background: linear-gradient(90deg, #2B5876 0%, #1FA05A 60%, #F5B301 100%); transform: scaleX(0); transform-origin: left;
  transition: transform .35s ease;
}
.card:hover::after { transform: scaleX(1); }

.card .ico {
  width: 58px; height: 58px; border-radius: 14px; margin-bottom: 20px;
  display: flex; align-items: center; justify-content: center;
  background: var(--brand-light); color: var(--brand);
}
.card .ico svg { width: 28px; height: 28px; }
.card .ico.blue { background: var(--blue-light); color: var(--blue); }
.card .ico.yellow { background: var(--accent-light); color: #C08A00; }
.card .ico.green { background: var(--green-light); color: var(--green-deep); }
.card h3 { font-size: 19px; color: var(--dark); margin-bottom: 10px; font-weight: 700; }
.card p { font-size: 14.5px; color: var(--text-light); }

/* 产品卡片 */
.tags { display: flex; flex-wrap: wrap; gap: 8px; }
.prod-card .tags { margin: 16px 0 20px; }
.tag {
  padding: 4px 12px; border-radius: 999px; font-size: 12.5px; font-weight: 500;
  background: var(--brand-light); color: var(--brand); border: 1px solid rgba(43,88,118,.15);
}
.tag.blue { background: var(--blue-light); color: var(--blue); border-color: rgba(62,124,168,.18); }
.tag.yellow { background: var(--accent-light); color: #B8860B; border-color: rgba(245,179,1,.3); }
.tag.green { background: var(--green-light); color: var(--green-deep); border-color: rgba(31,160,90,.25); }
.tag.gray { background: var(--gray-bg); color: var(--text-light); border-color: var(--border); }
.prod-card .sub-list { margin: 14px 0 4px; display: grid; gap: 7px; }
.prod-card .sub-list li {
  font-size: 13.5px; color: var(--text-light); padding-left: 18px; position: relative;
}
.prod-card .sub-list li::before {
  content: ""; position: absolute; left: 0; top: 9px;
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--grad-brand);
}
.card .more {
  display: inline-flex; align-items: center; gap: 6px; margin-top: 18px;
  color: var(--brand); font-weight: 600; font-size: 14.5px;
  transition: gap .25s;
}
.card .more:hover { gap: 10px; }
.card .more svg { width: 16px; height: 16px; }

/* ---------------- 关于简介 ---------------- */
.about-wrap { display: grid; grid-template-columns: 1.1fr .9fr; gap: 56px; align-items: center; }
.about-copy h2 { font-size: clamp(24px, 2.8vw, 34px); color: var(--dark); font-weight: 800; margin-bottom: 18px; letter-spacing: 1px; }
.about-copy p { color: var(--text-light); margin-bottom: 14px; font-size: 15.5px; }
.about-copy p strong { color: var(--brand); }
.about-points { margin-top: 22px; display: grid; gap: 12px; }
.about-points li { display: flex; gap: 10px; align-items: flex-start; font-size: 15px; color: var(--text); }
.about-points svg { width: 20px; height: 20px; color: var(--green); flex: none; margin-top: 3px; }

.about-visual {
  border-radius: 18px; padding: 40px 34px; color: var(--dark);
  background: #fff; border: 1px solid var(--border);
  position: relative; overflow: hidden;
  box-shadow: var(--shadow-md);
}
.about-visual::before {
  content: ""; position: absolute; right: -60px; top: -60px; width: 220px; height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(62,124,168,.13), transparent 70%);
}
.about-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 30px 18px; position: relative; }
.stat b { font-size: clamp(26px, 2.6vw, 36px); font-weight: 800; display: block; line-height: 1.2; color: var(--brand); }
.stat b em { font-style: normal; font-size: .55em; font-weight: 600; margin-left: 2px; }
.stat span { font-size: 13.5px; color: var(--text-light); }
.stat.green b { color: var(--green); }
.stat.yellow b { color: #C08A00; }
.stat.blue b { color: var(--blue); }

/* ---------------- 进出口能力 ---------------- */
.trade-wrap { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.trade-item {
  text-align: center; padding: 36px 22px; border-radius: var(--radius);
  background: #fff; border: 1px solid var(--border);
  transition: transform .3s, box-shadow .3s;
}
.trade-item:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.trade-item .ico {
  width: 64px; height: 64px; margin: 0 auto 18px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: var(--brand-light); color: var(--brand);
}
.trade-item .ico svg { width: 30px; height: 30px; }
.trade-item h3 { font-size: 17px; color: var(--dark); margin-bottom: 8px; }
.trade-item p { font-size: 13.5px; color: var(--text-light); }

/* ---------------- CTA（浅色清新） ---------------- */
.cta-band {
  position: relative; padding: 74px 0; text-align: center; overflow: hidden;
  background:
    radial-gradient(600px 260px at 12% 0%, rgba(62,124,168,.09), transparent 60%),
    radial-gradient(640px 280px at 50% 120%, rgba(31,160,90,.10), transparent 62%),
    radial-gradient(600px 260px at 88% 100%, rgba(245,179,1,.07), transparent 60%),
    var(--mint-bg);
  border-top: 1px solid var(--border);
}
.cta-band h2 { font-size: clamp(24px, 3vw, 34px); font-weight: 800; color: var(--dark); letter-spacing: 1px; margin-bottom: 12px; }
.cta-band p { color: var(--text-light); margin-bottom: 30px; font-size: 16px; }
.cta-band .hero-actions { justify-content: center; }

/* ---------------- 页脚（浅色） ---------------- */
footer.footer { background: var(--gray-bg); color: var(--text-light); padding: 60px 0 0; font-size: 14px; border-top: 1px solid var(--border); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.1fr; gap: 40px; padding-bottom: 44px; }
.footer h4 { color: var(--dark); font-size: 16px; margin-bottom: 18px; letter-spacing: 1px; }
.footer-brand { display: flex; align-items: center; margin-bottom: 16px; }
.footer-brand img { height: 58px; width: auto; display: block; background: #fff; padding: 6px 12px; border-radius: 10px; border: 1px solid var(--border); }
.footer p { margin-bottom: 9px; line-height: 1.75; }
.footer ul li { margin-bottom: 9px; }
.footer ul a { transition: color .2s; }
.footer ul a:hover { color: var(--brand); }
.footer .qr-box { display: flex; gap: 14px; align-items: flex-start; }
.footer .qr-box img {
  width: 96px; height: 96px; border-radius: 10px; background: #fff; padding: 5px;
  border: 1px solid var(--border);
}
.footer .qr-box span { font-size: 12.5px; color: var(--text-light); line-height: 1.6; }
.footer-bottom {
  border-top: 1px solid var(--border); padding: 18px 0;
  display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap;
  font-size: 13px; color: var(--text-light);
}
.footer-bottom .icp { color: var(--text-light); text-decoration: none; }
.footer-bottom .icp:hover { color: var(--brand); }

/* ---------------- 悬浮咨询按钮 + 二维码弹窗 ---------------- */
.float-consult {
  position: fixed; right: 26px; bottom: 30px; z-index: 950;
  display: flex; flex-direction: column; gap: 12px;
}
.float-btn {
  width: 56px; height: 56px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: var(--grad-brand); color: #fff;
  box-shadow: 0 8px 22px rgba(31, 67, 96, .32);
  transition: transform .25s, box-shadow .25s;
}
.float-btn:hover { transform: translateY(-4px) scale(1.05); box-shadow: 0 12px 28px rgba(31, 67, 96, .42); }
.float-btn svg { width: 26px; height: 26px; }

.modal-mask {
  position: fixed; inset: 0; z-index: 1000;
  background: rgba(31, 41, 55, .4); backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden; transition: opacity .3s, visibility .3s;
}
.modal-mask.show { opacity: 1; visibility: visible; }
.modal {
  background: #fff; border-radius: 18px; padding: 36px 34px 30px;
  width: min(360px, 90vw); text-align: center; position: relative;
  box-shadow: var(--shadow-lg);
  transform: translateY(16px) scale(.97); transition: transform .3s;
}
.modal-mask.show .modal { transform: none; }
.modal h3 { color: var(--dark); font-size: 19px; margin-bottom: 6px; }
.modal p { color: var(--text-light); font-size: 13.5px; margin-bottom: 18px; }
.modal img { width: 210px; height: 210px; margin: 0 auto 14px; border-radius: 12px; border: 1px solid var(--border); background: #fff; }
.modal .close-x {
  position: absolute; top: 12px; right: 14px; width: 34px; height: 34px;
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  color: var(--text-light); font-size: 20px; transition: background .2s, color .2s;
}
.modal .close-x:hover { background: var(--gray-bg); color: var(--dark); }

/* ---------------- 表单 ---------------- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-field { display: flex; flex-direction: column; gap: 7px; }
.form-field.full { grid-column: 1 / -1; }
.form-field label { font-size: 14px; font-weight: 600; color: var(--dark); }
.form-field input, .form-field textarea, .form-field select {
  padding: 12px 15px; border-radius: var(--radius-sm);
  border: 1.5px solid var(--border); font-size: 15px; font-family: inherit;
  background: #fff; color: var(--text); outline: none;
  transition: border-color .2s, box-shadow .2s;
}
.form-field input:focus, .form-field textarea:focus, .form-field select:focus {
  border-color: var(--brand); box-shadow: 0 0 0 3px rgba(43,88,118,.13);
}
.form-field .err { font-size: 12.5px; color: #D93025; display: none; }
.form-field.invalid input, .form-field.invalid textarea { border-color: #D93025; }
.form-field.invalid .err { display: block; }

/* ---------------- 滚动进场动画 ---------------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .1s; } .reveal.d2 { transition-delay: .2s; } .reveal.d3 { transition-delay: .3s; }

/* 数字输入禁用滚轮/箭头（全局规范） */
input[type=number]::-webkit-inner-spin-button,
input[type=number]::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }
input[type=number] { -moz-appearance: textfield; appearance: textfield; }

/* ---------------- 内页 Hero 横幅 ---------------- */
.page-hero {
  position: relative; padding: calc(var(--nav-h) + 68px) 0 46px;
  background: linear-gradient(180deg, #FBFCFD 0%, #F3F7FA 100%);
  border-bottom: 1px solid var(--border); overflow: hidden;
}
.page-hero::before {
  content: ""; position: absolute; inset: 0; opacity: .3; pointer-events: none;
  background-image:
    linear-gradient(rgba(43, 88, 118, .06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(43, 88, 118, .06) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 90% at 30% 40%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 90% at 30% 40%, #000 30%, transparent 75%);
}
.page-hero .container { position: relative; z-index: 2; }
.page-hero .crumb { font-size: 13.5px; color: var(--text-light); margin-bottom: 10px; }
.page-hero .crumb a:hover { color: var(--brand); }
.page-hero h1 { font-size: clamp(26px, 3.2vw, 40px); color: var(--dark); font-weight: 800; letter-spacing: 1px; }
.page-hero h1 .hl {
  background: linear-gradient(90deg, #2B5876 0%, #1FA05A 55%, #F5B301 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.page-hero p { color: var(--text-light); margin-top: 12px; max-width: 720px; font-size: 16px; }

/* ---------------- 产品筛选 chips ---------------- */
.filter-bar { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; margin-bottom: 40px; }
.chip {
  padding: 8px 22px; border-radius: 999px;
  border: 1.5px solid var(--border); background: #fff; color: var(--text);
  font-size: 14.5px; font-weight: 500;
  transition: border-color .25s, color .25s, background .25s, box-shadow .25s;
}
.chip:hover { border-color: var(--brand); color: var(--brand); }
.chip.active {
  background: var(--grad-brand); color: #fff; border-color: transparent;
  box-shadow: 0 4px 12px rgba(31, 67, 96, .25);
}
.note-bar {
  max-width: 860px; margin: 40px auto 0; padding: 16px 22px;
  border-radius: var(--radius-sm); background: var(--accent-light);
  border: 1px solid rgba(245, 179, 1, .35);
  color: #8A6D00; font-size: 13.5px; text-align: center;
}

/* ---------------- 发展历程时间轴 ---------------- */
.timeline { position: relative; max-width: 800px; margin: 0 auto; }
.timeline::before {
  content: ""; position: absolute; left: 103px; top: 8px; bottom: 8px; width: 2px;
  background: linear-gradient(180deg, #2B5876, rgba(43, 88, 118, .12));
}
.tl-item { position: relative; display: grid; grid-template-columns: 84px 1fr; gap: 40px; padding-bottom: 34px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-dot {
  position: absolute; left: 97px; top: 5px;
  width: 14px; height: 14px; border-radius: 50%;
  background: #fff; border: 3.5px solid var(--brand);
}
.tl-item:first-child .tl-dot { background: var(--accent); border-color: var(--brand); }
.tl-year { font-weight: 800; color: var(--brand); font-size: 18px; text-align: right; line-height: 1.5; }
.tl-body h3 { color: var(--dark); font-size: 17px; font-weight: 700; margin-bottom: 4px; }
.tl-body p { color: var(--text-light); font-size: 14.5px; }

/* ---------------- 联系页 ---------------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 40px; align-items: start; }
.contact-grid.single { grid-template-columns: 1fr; max-width: 760px; margin: 0 auto; }
.info-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 30px 28px; box-shadow: var(--shadow-sm);
}
.info-row { display: flex; gap: 14px; padding: 15px 0; border-bottom: 1px dashed var(--border); }
.info-row:last-of-type { border-bottom: none; }
.info-row .ico {
  width: 44px; height: 44px; flex: none; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  background: var(--brand-light); color: var(--brand);
}
.info-row .ico svg { width: 22px; height: 22px; }
.info-row b { display: block; font-size: 14.5px; color: var(--dark); margin-bottom: 2px; }
.info-row p { font-size: 14px; color: var(--text-light); line-height: 1.6; }
.info-qr { margin-top: 20px; padding-top: 20px; border-top: 1px dashed var(--border); display: flex; gap: 14px; align-items: center; }
.info-qr img { width: 92px; height: 92px; border-radius: 10px; border: 1px solid var(--border); background: #fff; padding: 4px; }
.info-qr span { font-size: 12.5px; color: var(--text-light); line-height: 1.6; }
.form-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 32px 30px; box-shadow: var(--shadow-sm);
}
.form-card h3 { font-size: 19px; color: var(--dark); margin-bottom: 6px; }
.form-card .form-tip { font-size: 13.5px; color: var(--text-light); margin-bottom: 22px; }
.form-result { margin-top: 14px; font-size: 14px; font-weight: 500; }
.map-ph {
  margin-top: 40px; height: 280px; border-radius: var(--radius);
  background: repeating-linear-gradient(45deg, #F3F6F9, #F3F6F9 14px, #EDF1F5 14px, #EDF1F5 28px);
  border: 1.5px dashed #C3D0DB;
  display: flex; flex-direction: column; gap: 8px; align-items: center; justify-content: center;
  color: #93A3B2; font-size: 14px;
}
.map-ph svg { width: 36px; height: 36px; }

/* ---------------- 响应式：768px ---------------- */
@media (max-width: 992px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .trade-wrap { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero .container, .about-wrap { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { order: -1; }
  .hero { min-height: auto; padding-top: calc(var(--nav-h) + 40px); }
  .hero-tag.t2 { right: 0; } .hero-tag.t1 { left: 0; }
}
@media (max-width: 768px) {
  :root { --nav-h: 62px; }
  .nav-links {
    position: fixed; top: var(--nav-h); left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 2px;
    background: rgba(255,255,255,.98); backdrop-filter: blur(16px);
    padding: 14px 20px 22px; box-shadow: 0 18px 30px rgba(31,51,64,.12);
    transform: translateY(-130%); transition: transform .35s ease;
    z-index: 890;
  }
  .nav-links.open { transform: none; }
  .nav-links a { padding: 13px 14px; border-radius: 10px; font-size: 16px; }
  .nav-links a.active::after { display: none; }
  .nav-links a.active { background: var(--brand-light); }
  .hamburger { display: flex; }
  .nav-phone span { display: none; }
  .nav-phone { padding: 9px 12px; }

  section.section { padding: 60px 0; }
  .grid-3, .grid-2, .grid-4 { grid-template-columns: 1fr; }
  .trade-wrap { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .trust-bar .container { justify-content: flex-start; gap: 14px 22px; }
  .trust-sep { display: none; }
  .form-grid { grid-template-columns: 1fr; }
  .hero-actions .btn { flex: 1; min-width: 150px; }
  .hero-tag { font-size: 12.5px; padding: 7px 12px; }
  .float-consult { right: 16px; bottom: 20px; }
  .footer-bottom { justify-content: center; text-align: center; }
  .contact-grid { grid-template-columns: 1fr; }
  .tl-year { font-size: 16px; }
  .page-hero { padding-top: calc(var(--nav-h) + 40px); }
}