@charset "utf-8";
/* ===== 常州科孚 GROVECHEM · 设计系统（典雅绿） ===== */
:root {
  /* 品牌色——中国典雅绿 */
  --ink: #0c1c17;          /* 墨绿近黑，用于深色背景 */
  --ink-2: #16352a;
  --brand: #1f7a5c;        /* 主绿·松绿/松石 */
  --brand-600: #176048;
  --brand-700: #114a38;
  --brand-050: #eaf5f0;    /* 极浅绿底，hover 用 */
  --accent: #c9a24b;       /* 典雅金，点缀用 */
  --bg: #f5f8f6;
  --surface: #ffffff;
  --border: #e3ebe6;
  --text: #1b2a24;
  --text-soft: #586b61;
  --text-mute: #8a978f;
  --shadow-sm: 0 1px 2px rgba(16,40,30,.06);
  --shadow: 0 6px 18px rgba(16,40,30,.08);
  --shadow-lg: 0 18px 40px rgba(16,40,30,.12);
  --radius: 16px;
  --maxw: 1200px;
  --font: "PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}

*,*::before,*::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { margin: 0; padding: 0; list-style: none; }
h1,h2,h3,h4,h5 { margin: 0; color: var(--ink); font-weight: 800; letter-spacing: -.3px; }
p { margin: 0; }

/* 布局 */
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; width: 100%; }
.section { padding: clamp(56px, 8vw, 96px) 0; }
.section.alt { background: #eef4f1; }

.section-head { text-align: center; max-width: 760px; margin: 0 auto 52px; }
.section-eyebrow { display: inline-block; color: var(--brand); font-weight: 700; letter-spacing: 3px; font-size: 13px; margin-bottom: 14px; }
.section-title { font-size: clamp(26px, 3.4vw, 38px); color: var(--ink); }
.section-desc { color: var(--text-soft); font-size: 16px; margin-top: 14px; }

/* 按钮 */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 13px 26px; border-radius: 10px; font-weight: 600; font-size: 15px; transition: all .25s ease; cursor: pointer; border: 1px solid transparent; line-height: 1; }
.btn svg { width: 18px; height: 18px; }
.btn-primary { background: var(--brand); color: #fff; box-shadow: 0 8px 20px rgba(31,122,92,.32); }
.btn-primary:hover { background: var(--brand-600); transform: translateY(-2px); box-shadow: 0 12px 26px rgba(31,122,92,.4); }
.btn-ghost { background: rgba(255,255,255,.1); color: #fff; border-color: rgba(255,255,255,.32); }
.btn-ghost:hover { background: rgba(255,255,255,.18); }
.btn-outline { background: #fff; color: var(--brand); border-color: var(--border); }
.btn-outline:hover { border-color: var(--brand); background: var(--brand-050); }
.btn-light { background: #fff; color: var(--brand); }
.btn-light:hover { transform: translateY(-2px); box-shadow: var(--shadow); }


/* 头部导航 */
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,.86); backdrop-filter: saturate(180%) blur(12px); -webkit-backdrop-filter: saturate(180%) blur(12px); border-bottom: 1px solid var(--border); transition: box-shadow .25s ease; }
.site-header.scrolled { box-shadow: var(--shadow); }
.header-inner { max-width: var(--maxw); margin: 0 auto; display: flex; align-items: center; justify-content: space-between; height: 74px; padding: 0 24px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand img { height: 44px; width: auto; display: block; border: none; box-shadow: none; }
.brand-name { font-size: 19px; font-weight: 800; color: var(--ink); line-height: 1.1; }
.brand-sub { font-size: 12px; letter-spacing: 1px; color: var(--text-mute); }

/* 品牌名按站点语言显示：避免中文/英文叠成两行 */
body.lang-zh .brand-sub { display: none; }
body.lang-en .brand-name { display: none; }
body.lang-en .brand-sub { font-size: 19px; font-weight: 800; color: var(--ink); letter-spacing: 0; }
.nav { display: flex; align-items: center; gap: 2px; }
.nav a { padding: 10px 16px; font-size: 15px; color: var(--text); border-radius: 9px; font-weight: 500; transition: all .2s ease; }
.nav a:hover, .nav a.active { color: var(--brand); background: var(--brand-050); }
.header-actions { display: flex; align-items: center; gap: 12px; }
.mobile-toggle { display: none; flex-direction: column; justify-content: center; gap: 5px; width: 44px; height: 44px; padding: 0; border: 1px solid var(--border); border-radius: 10px; background: #fff; cursor: pointer; }
.mobile-toggle span { display: block; width: 20px; height: 2px; margin: 0 auto; background: var(--ink); border-radius: 2px; transition: .25s; }
.mobile-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.mobile-toggle.active span:nth-child(2) { opacity: 0; }
.mobile-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 英雄区 */
.hero { position: relative; color: #fff; overflow: hidden; background: radial-gradient(1000px 560px at 85% -10%, rgba(47,158,126,.40), transparent 60%), linear-gradient(135deg, #0b1a15 0%, #133027 52%, #0b1a15 100%); }
.hero-inner { max-width: var(--maxw); margin: 0 auto; display: grid; grid-template-columns: 1.08fr .92fr; gap: 56px; align-items: center; padding: 84px 24px 96px; }
.hero-eyebrow { display: inline-block; padding: 7px 16px; border: 1px solid rgba(255,255,255,.25); border-radius: 999px; font-size: 13px; letter-spacing: 2px; color: #bfe6d4; margin-bottom: 22px; }
.hero h1 { font-size: clamp(34px, 5vw, 56px); line-height: 1.08; font-weight: 800; letter-spacing: -.5px; color: #fff; }
.hero h1 .hl { color: #6fd6ab; }
.hero .lead { font-size: 18px; color: rgba(255,255,255,.82); max-width: 580px; margin-top: 22px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 34px; }
.hero-stats { display: flex; flex-wrap: wrap; gap: 40px; margin-top: 50px; }
.hero-stat .num { font-size: clamp(28px, 3.4vw, 34px); font-weight: 800; color: #fff; }
.hero-stat .num small { font-size: 16px; font-weight: 600; color: #9fd8c0; margin-left: 2px; }
.hero-stat .label { font-size: 13px; color: rgba(255,255,255,.66); margin-top: 4px; }
.hero-visual { position: relative; }
.hero-visual::before { content: ""; position: absolute; inset: -28px -20px auto auto; width: 240px; height: 240px; background: radial-gradient(circle at 30% 30%, rgba(47,158,126,.6), transparent 70%); filter: blur(8px); z-index: 0; }
.hero-visual .frame { position: relative; z-index: 1; border-radius: 20px; overflow: hidden; box-shadow: 0 30px 60px rgba(0,0,0,.4); border: 1px solid rgba(255,255,255,.14); }
.hero-visual .frame img { width: 100%; height: auto; display: block; }
.hero-visual .badge { position: absolute; left: 18px; bottom: 18px; z-index: 2; background: rgba(12,28,23,.7); backdrop-filter: blur(6px); color: #d8f1e6; font-size: 13px; font-weight: 600; padding: 8px 14px; border-radius: 10px; border: 1px solid rgba(255,255,255,.16); }

/* 产品系列页 hero：系列主图移入 hero 右侧（仿首页两栏），尺寸收敛避免过大 */
.hero--product .hero-visual .frame img { aspect-ratio: 4 / 3; object-fit: cover; }
@media (min-width: 981px) {
  .hero--product .hero-inner { grid-template-columns: 1.25fr .75fr; }
  .hero--product .hero-visual { max-width: 360px; margin-left: auto; }
}
@media (max-width: 980px) {
  .hero--product .hero-visual { max-width: 420px; margin: 0 auto; }
}

/* 居中英雄（联系页用） */
.hero--center .hero-inner { grid-template-columns: 1fr; text-align: center; padding-top: 72px; padding-bottom: 76px; }
.hero--center .hero-copy { max-width: 760px; margin: 0 auto; }
.hero--center .lead { margin-left: auto; margin-right: auto; }

/* 联系页 hero 右侧点缀（轻量动效，尊重 reduced-motion） */
.hero--contact .hero-visual { display: flex; align-items: center; justify-content: center; }
.contact-deco { position: relative; width: 100%; max-width: 340px; aspect-ratio: 1/1; }
.contact-deco .ring { position: absolute; border-radius: 50%; }
.contact-deco .r1 { inset: 0; border: 1px dashed rgba(111,214,171,.45); animation: deco-spin 42s linear infinite; }
.contact-deco .r2 { inset: 46px; border: 1px solid rgba(111,214,171,.28); }
.contact-deco .r3 { inset: 92px; border: 1px solid rgba(201,162,75,.30); }
.contact-deco .deco-core { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; }
.contact-deco .deco-core svg { width: 66px; height: 66px; color: #6fd6ab; filter: drop-shadow(0 6px 16px rgba(31,122,92,.5)); }
@keyframes deco-spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .contact-deco .r1 { animation: none; } }
@media (max-width: 980px) {
  .hero--contact .hero-visual { max-width: 300px; }
  .contact-deco { margin: 0 auto; }
  .contact-map { height: 260px; }
}

/* 产品推荐 */
.notice { display: flex; align-items: center; gap: 16px; background: #fff; border: 1px solid var(--border); border-left: 4px solid var(--brand); border-radius: 14px; padding: 18px 24px; box-shadow: var(--shadow-sm); }
.notice .tag { flex: none; background: var(--accent); color: #3a2c10; font-weight: 700; font-size: 13px; padding: 6px 12px; border-radius: 8px; }
.notice a { color: var(--brand); font-weight: 600; }

/* 两大业务板块 */
.biz-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.biz-card { position: relative; border-radius: var(--radius); overflow: hidden; min-height: 320px; display: flex; align-items: flex-end; padding: 34px; color: #fff; background: linear-gradient(135deg, #0c1c17, #1c5240); transition: transform .3s ease, box-shadow .3s ease; }
.biz-card.c2 { background: linear-gradient(135deg, #103a2c, #1f7a5c); }
.biz-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.biz-card .deco { position: absolute; right: -40px; top: -40px; width: 200px; height: 200px; background: radial-gradient(circle, rgba(111,214,171,.35), transparent 70%); }
.biz-card > div { position: relative; z-index: 1; }
.biz-card h3 { font-size: 22px; color: #fff; margin-bottom: 16px; }
.biz-card .tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.biz-card .tags span { font-size: 13px; padding: 5px 12px; border: 1px solid rgba(255,255,255,.28); border-radius: 999px; color: #e3f4ec; }
.biz-card p { font-size: 14px; color: rgba(255,255,255,.82); margin-bottom: 22px; }

/* 产品网格 */
.prod-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.prod-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease; display: flex; flex-direction: column; }
.prod-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.prod-card .thumb { aspect-ratio: 4/3; overflow: hidden; background: #eef2f7; }
.prod-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.prod-card:hover .thumb img { transform: scale(1.06); }
.prod-card .body { padding: 20px; display: flex; flex-direction: column; flex: 1; }
.prod-card h3 { font-size: 17px; margin-bottom: 8px; }
.prod-card p { font-size: 14px; color: var(--text-soft); margin-bottom: 14px; flex: 1; }
.prod-card .more { display: inline-flex; align-items: center; gap: 5px; color: var(--brand); font-weight: 600; font-size: 14px; }
.prod-card .more svg { width: 16px; height: 16px; transition: transform .25s; }
.prod-card:hover .more svg { transform: translateX(4px); }

/* 技术服务 */
.feat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feat-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 30px; transition: transform .3s ease, box-shadow .3s ease; }
.feat-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.feat-card .icon { width: 54px; height: 54px; display: flex; align-items: center; justify-content: center; border-radius: 14px; background: var(--brand-050); border: 1px solid rgba(31,122,92,.18); color: var(--brand); margin-bottom: 18px; }
.feat-card .icon svg { width: 26px; height: 26px; }
.feat-card h3 { font-size: 19px; margin-bottom: 10px; }
.feat-card p { font-size: 14px; color: var(--text-soft); margin-bottom: 16px; }
.feat-card .more { display: inline-flex; align-items: center; gap: 5px; color: var(--brand); font-weight: 600; font-size: 14px; }
.feat-card .more svg { width: 16px; height: 16px; transition: transform .25s; }
.feat-card:hover .more svg { transform: translateX(4px); }

/* 核心优势 */
.adv-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.adv { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 30px 26px; transition: transform .3s ease, box-shadow .3s ease; }
.adv:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.adv .icon { width: 50px; height: 50px; display: flex; align-items: center; justify-content: center; border-radius: 14px; background: var(--brand-050); color: var(--brand); margin-bottom: 16px; }
.adv .icon svg { width: 24px; height: 24px; }
.adv h4 { font-size: 18px; margin-bottom: 8px; }
.adv p { font-size: 14px; color: var(--text-soft); }

/* CTA */
.cta { background: linear-gradient(135deg, var(--ink), var(--brand-700)); color: #fff; border-radius: 24px; padding: clamp(36px, 5vw, 56px); display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 28px; }
.cta-text h3 { color: #fff; font-size: clamp(22px, 3vw, 30px); }
.cta-text p { color: rgba(255,255,255,.78); margin-top: 10px; max-width: 480px; }
.cta-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; }
.cta-actions .tel { font-size: 26px; font-weight: 800; color: #fff; }

/* 页脚 */
.site-footer { background: var(--ink); color: rgba(255,255,255,.7); padding: 64px 0 30px; margin-top: 24px; }
.footer-grid { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.3fr; gap: 40px; }
.footer-brand img { height: 46px; width: auto; margin-bottom: 18px; display: block; }
.footer-brand p { font-size: 14px; color: rgba(255,255,255,.62); max-width: 320px; }
.footer-brand p strong { color: #fff; font-weight: 700; }
.site-footer h5 { color: #fff; font-size: 15px; margin-bottom: 16px; }
.footer-links li, .footer-contact li { margin-bottom: 10px; font-size: 14px; }
.footer-links a { color: rgba(255,255,255,.7); transition: color .2s; }
.footer-links a:hover { color: #6fd6ab; }
.footer-contact li { color: rgba(255,255,255,.7); }
.footer-contact .wx { width: 72px; height: 72px; border-radius: 12px; margin-top: 6px; }
.footer-bottom { max-width: var(--maxw); margin: 44px auto 0; padding: 22px 24px 0; border-top: 1px solid rgba(255,255,255,.12); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; font-size: 13px; color: rgba(255,255,255,.55); }
.footer-bottom a { color: var(--accent); }

/* 动画 */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .08s; }
.reveal.d2 { transition-delay: .16s; }
.reveal.d3 { transition-delay: .24s; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* 响应式 */
@media (max-width: 980px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; padding-top: 56px; }
  .hero-visual { max-width: 460px; }
  .nav { position: absolute; top: 74px; left: 0; right: 0; background: #fff; flex-direction: column; align-items: stretch; padding: 10px 16px 16px; box-shadow: var(--shadow); border-top: 1px solid var(--border); display: none; }
  .nav.open { display: flex; }
  .nav a { padding: 14px 12px; }
  .mobile-toggle { display: flex; }
  .header-actions .btn-outline { display: none; }
  .biz-grid { grid-template-columns: 1fr; }
  .prod-grid { grid-template-columns: repeat(2, 1fr); }
  .feat-grid { grid-template-columns: 1fr; }
  .adv-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .container { padding: 0 18px; }
  .header-inner { padding: 0 18px; }
  .prod-grid { grid-template-columns: 1fr; }
  .adv-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 24px 32px; }
  .cta { flex-direction: column; align-items: flex-start; }
}

/* 表单 */
.form-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: clamp(24px, 4vw, 36px); box-shadow: var(--shadow-sm); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 14px; font-weight: 600; color: var(--text); margin-bottom: 8px; }
.field input, .field textarea, .field select { width: 100%; padding: 12px 14px; border: 1px solid var(--border); border-radius: 10px; font-size: 15px; font-family: inherit; color: var(--text); background: #fff; transition: border-color .2s, box-shadow .2s; }
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--brand); box-shadow: 0 0 0 3px rgba(31,122,92,.12); }
.field textarea { resize: vertical; min-height: 130px; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.contact-info { display: grid; gap: 18px; }
.contact-info .ci { display: flex; gap: 14px; align-items: flex-start; }
.contact-info .ci .ic { flex: none; width: 42px; height: 42px; border-radius: 12px; background: var(--brand-050); color: var(--brand); display: flex; align-items: center; justify-content: center; }
.contact-info .ci .ic svg { width: 22px; height: 22px; }
.contact-info .ci h4 { font-size: 15px; margin-bottom: 4px; }
.contact-info .ci p { font-size: 14px; color: var(--text-soft); }
.contact-map { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); height: 340px; min-height: 0; display: flex; }
.contact-map img { width: 100%; height: 100%; object-fit: cover; display: block; }
@media (max-width: 980px) { .contact-grid { grid-template-columns: 1fr; } .form-grid { grid-template-columns: 1fr; } }

/* desktop: right nav 50px from edge */
@media (min-width: 981px) {
  .header-inner { padding-right: 50px; }
  .nav { margin-left: auto; }
  .header-actions { display: none; }
}


/* ===== 详情/产品/文章页通用组件 ===== */
.breadcrumb { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; font-size: 13px; color: var(--text-mute); }
.breadcrumb a { color: var(--text-soft); }
.breadcrumb a:hover { color: var(--brand); }
.breadcrumb .sep { color: var(--border); }

.detail-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.detail-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; transition: transform .3s ease, box-shadow .3s ease; }
.detail-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.detail-media { aspect-ratio: 4/3; overflow: hidden; background: #eef2f7; }
.detail-media img { width: 100%; height: 100%; object-fit: cover; }
.detail-body { padding: 22px 24px 26px; display: flex; flex-direction: column; flex: 1; }
.detail-body h3 { font-size: 18px; margin-bottom: 12px; display: flex; align-items: baseline; flex-wrap: wrap; gap: 8px; }
.detail-body h3 .code { color: var(--brand); font-size: 15px; font-weight: 700; }
.detail-body .desc { font-size: 14px; color: var(--text-soft); line-height: 1.85; }
.detail-note { font-size: 13px; color: var(--text-mute); margin-top: 14px; padding-left: 12px; border-left: 3px solid var(--brand-050); }

.spec { width: 100%; border-collapse: collapse; margin-top: 12px; font-size: 13.5px; }
.spec th, .spec td { text-align: left; padding: 8px 12px; border-bottom: 1px solid var(--border); vertical-align: top; }
.spec th { color: var(--text-mute); font-weight: 600; width: 104px; background: #f7faf8; white-space: nowrap; }
.spec td { color: var(--text); }
.spec tr:last-child th, .spec tr:last-child td { border-bottom: none; }

.data-table { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; font-size: 14px; }
.data-table th, .data-table td { padding: 12px 16px; border-bottom: 1px solid var(--border); text-align: left; }
.data-table thead th { background: var(--brand); color: #fff; font-weight: 600; }
.data-table tbody tr:nth-child(even) { background: #f7faf8; }
.data-table tbody tr:last-child td { border-bottom: none; }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.media img { width: 100%; border-radius: var(--radius); box-shadow: var(--shadow); display: block; }

.article { max-width: 880px; margin: 0 auto; }
.article p { font-size: 15px; color: var(--text); line-height: 1.95; margin-bottom: 18px; }
.article h3 { font-size: 20px; margin: 34px 0 14px; }
.figure { margin: 26px 0; }
.figure img { width: 100%; border-radius: var(--radius); box-shadow: var(--shadow); display: block; }
.figure figcaption { font-size: 13px; color: var(--text-mute); margin-top: 10px; }
.pull { border-left: 4px solid var(--brand); background: var(--brand-050); padding: 16px 20px; border-radius: 12px; color: var(--ink-2); font-size: 15px; line-height: 1.8; margin: 22px 0; }

/* 老化测试页：小图按原尺寸陈列，绝不放大变糊 */
.article--uv { max-width: 780px; }
.article--uv .figure {
  width: fit-content;
  max-width: 100%;
  margin: 30px auto;
  padding: 16px;
  background: var(--brand-050);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.article--uv .figure img {
  width: auto;          /* 按原图真实像素显示，不放大 */
  max-width: 100%;      /* 仅当屏幕比图窄时才缩小 */
  height: auto;
  margin: 0 auto;
  border-radius: 8px;
  display: block;
}
.article--uv .figure figcaption {
  text-align: center;
  margin-top: 12px;
  font-size: 13px;
  color: var(--text-mute);
  letter-spacing: .04em;
}

@media (max-width: 980px) {
  .detail-grid { grid-template-columns: 1fr; }
  .split { grid-template-columns: 1fr; gap: 24px; }
}

/* ===== 浮动操作按钮：返回 / 回顶 ===== */
.float-actions { position: fixed; right: 18px; bottom: 22px; top: auto; transform: none; display: flex; flex-direction: column; gap: 12px; z-index: 80; }
.float-btn { display: inline-flex; align-items: center; justify-content: center; padding: 11px 20px; border: none; border-radius: 999px; background: var(--brand); color: #fff; font-family: var(--font); font-size: 14px; font-weight: 600; line-height: 1; cursor: pointer; box-shadow: var(--shadow); transition: transform .2s ease, background .2s ease, box-shadow .2s ease; min-height: 44px; min-width: 44px; }
.float-btn:hover { background: var(--brand-600); transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.float-btn:active { transform: translateY(-1px); }
.float-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.float-btn .lbl { white-space: nowrap; }
@media (max-width: 640px) {
  .float-actions { bottom: 14px; right: 12px; flex-direction: row; }
  .float-btn { padding: 10px 16px; }
}
@media (prefers-reduced-motion: reduce) { .float-btn { transition: none; } }

/* 宽屏下不换行的产品描述 */
.section-head--wide { max-width: 1040px; }
@media (min-width: 981px) {
  .keep-one-line { white-space: nowrap; }
}

/* 首页 hero 右侧图内底部说明（覆盖在图片下方） */
.hero-caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  margin: 0;
  padding: 30px 16px 14px;
  background: linear-gradient(to top, rgba(12,28,23,.86) 0%, rgba(12,28,23,.55) 55%, rgba(12,28,23,0) 100%);
  color: #fff;
  font-size: 14.5px;
  line-height: 1.65;
  border: none;
  border-radius: 0 0 20px 20px;
  overflow-wrap: anywhere;
}

/* 锚点跳转时为吸顶导航留出空间 */
:target { scroll-margin-top: 88px; }
.detail-card[id], section[id] { scroll-margin-top: 88px; }