/* 样式表 V4：移动优先、卡片化、图文并茂。
   设计要点：主色沿用品牌青绿，增加琥珀强调色用于 CTA；
   全部尺寸用 clamp / 网格自适应，无外部字体与图标库；
   打印样式优化（采购清单可直接打印成 PDF）。
*/

:root {
  --ink: #10262b;
  --ink-2: #2c454a;
  --muted: #5f7679;
  --line: #dde8e5;
  --line-2: #eaf1ef;
  --teal: #0e6b5e;
  --teal-2: #12897a;
  --teal-pale: #e8f4f1;
  --amber: #b4621a;
  --amber-pale: #fdf3e7;
  --paper: #ffffff;
  --bg: #f6faf9;
  --shadow: 0 10px 30px rgba(16, 56, 52, .07);
  --shadow-lg: 0 20px 60px rgba(16, 56, 52, .12);
  --radius: 10px;
  --maxw: 1180px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
}

img, svg { max-width: 100%; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--teal); }
h1, h2, h3, h4 { line-height: 1.3; margin: 0 0 .6em; letter-spacing: -.01em; }
p { margin: 0 0 1em; }
ul, ol { margin: 0 0 1em; padding-left: 1.35em; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 clamp(16px, 4vw, 32px); }
.narrow { max-width: 860px; }
.muted { color: var(--muted); }
.eyebrow {
  margin: 0 0 .7em;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--teal-2);
}

/* ---------------------------------------------------------- 顶栏与导航 */
.topline { background: #0c3f3a; color: #d6ebe6; font-size: 12.5px; }
.topinner { display: flex; flex-wrap: wrap; gap: 6px 18px; align-items: center; padding: 7px clamp(16px, 4vw, 32px); }
.top-company { font-weight: 600; }
.top-tag { color: #9dc4bd; }
.top-tel { margin-left: auto; color: #fff; font-weight: 600; }

.header {
  position: sticky; top: 0; z-index: 40;
  background: rgba(255, 255, 255, .94);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; gap: 20px; min-height: 66px; }
.brand { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
.brandmark {
  display: inline-flex; flex-direction: column; align-items: center; justify-content: center;
  line-height: 1.05; width: 40px; height: 40px; border-radius: 9px;
  background: linear-gradient(140deg, #0e6b5e, #16907e);
  color: #fff; font-weight: 800; font-size: 11px; letter-spacing: 0;
}
.brandmark span { color: #a9e4d6; }
.brandtext b { display: block; font-size: 16.5px; letter-spacing: -.3px; }
.brandtext small { display: block; font-size: 9px; letter-spacing: .14em; color: var(--muted); }
.nav nav { display: flex; align-items: center; gap: clamp(10px, 1.6vw, 20px); margin-left: auto; }
.nav nav a { font-size: 14px; color: var(--ink-2); padding: 6px 0; border-bottom: 2px solid transparent; white-space: nowrap; }
.nav nav a:hover { border-color: var(--teal); color: var(--teal); }
.nav nav a[aria-current="page"] { color: var(--teal); border-color: var(--teal); font-weight: 600; }
.navcta { padding: 8px 16px !important; border-radius: 6px; background: var(--teal); color: #fff !important; font-weight: 600; }
.navtoggle { display: none; margin-left: auto; border: 1px solid var(--line); background: #fff; border-radius: 6px; font-size: 18px; padding: 4px 10px; }

/* ---------------------------------------------------------- 按钮 */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 12px 22px; border-radius: 7px; font-weight: 600; font-size: 14.5px;
  border: 1px solid transparent; cursor: pointer; transition: .18s ease; white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: linear-gradient(135deg, #0e6b5e, #16907e); color: #fff; box-shadow: 0 8px 22px rgba(14, 107, 94, .22); }
.btn-primary:hover { color: #fff; box-shadow: 0 12px 26px rgba(14, 107, 94, .3); }
.btn-dark { background: #12333a; color: #fff; }
.btn-dark:hover { color: #fff; background: #0c2429; }
.btn-ghost { background: #fff; border-color: var(--line); color: var(--ink); }
.btn-ghost:hover { border-color: var(--teal); color: var(--teal); }
.hero-actions, .actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }

/* ---------------------------------------------------------- 首页 Hero */
.hero {
  background:
    radial-gradient(900px 420px at 85% -10%, #d9efe9 0%, transparent 60%),
    linear-gradient(180deg, #f2f9f7 0%, #ffffff 100%);
  border-bottom: 1px solid var(--line);
}
/* 全屏实拍图 hero：图片走 <img>（可被图片搜索索引 + 可优先加载），
   叠层用伪元素覆盖，保证深色文字在浅色风景上可读 */
.hero-photo {
  position: relative; isolation: isolate; overflow: hidden;
  background: #f2faf6;
  border-bottom: 1px solid var(--line);
}
.hero-photo .hero-bg {
  position: absolute; inset: 0; z-index: -2;
  width: 100%; height: 100%; object-fit: cover; object-position: center 45%;
}
.hero-photo::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(100deg, rgba(242, 250, 246, .93) 0%, rgba(239, 248, 244, .72) 45%, rgba(237, 247, 243, .18) 78%, rgba(236, 247, 243, .06) 100%);
}
.hero-photo h1 { color: #0b3a33; }
.hero-photo h1 em { color: #0e7d68; }
.hero-photo .eyebrow { color: #0e7d68; }
.hero.hero-photo .lead { color: #2c554e; }
.hero.hero-photo .trust { color: #35635c; }
.hero-photo .trust li::before { color: #0e7d68; }
.hero.hero-photo .btn-ghost { background: transparent; color: #0b3a33; border-color: rgba(11, 58, 51, .45); }
.hero.hero-photo .btn-ghost:hover { background: rgba(11, 58, 51, .08); }
.hero-photo .hero-card { box-shadow: 0 24px 60px rgba(10, 60, 52, .18); }
.hero-inner {
  display: grid; grid-template-columns: 1.15fr .85fr; gap: clamp(24px, 5vw, 64px);
  align-items: center; padding: clamp(40px, 6vw, 78px) 0 clamp(36px, 5vw, 64px);
}
.hero h1 { font-size: clamp(30px, 4.6vw, 54px); letter-spacing: -.02em; }
.hero h1 em { font-style: normal; color: var(--teal); }
.hero .lead { font-size: clamp(15px, 1.4vw, 17px); color: var(--ink-2); max-width: 620px; }
.trust { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-top: 22px; padding: 0; list-style: none; font-size: 13px; color: #3f6560; }
.trust li::before { content: "✓"; color: var(--teal-2); font-weight: 800; margin-right: 6px; }

.hero-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px 26px; box-shadow: var(--shadow-lg); position: relative; overflow: hidden;
}
.hero-card::before { content: ""; position: absolute; inset: 0 0 auto 0; height: 4px; background: linear-gradient(90deg, #0e6b5e, #54b9a5); }
.hero-card-top { font-size: 11px; letter-spacing: .16em; font-weight: 700; color: var(--teal-2); }
.hero-card h2 { font-size: 19px; margin: 10px 0 14px; }
.hero-card ol { padding-left: 0; list-style: none; margin: 0 0 12px; counter-reset: hc; }
.hero-card ol li { counter-increment: hc; position: relative; padding: 9px 0 9px 38px; border-bottom: 1px dashed var(--line); font-size: 14.5px; color: var(--ink-2); }
.hero-card ol li::before {
  content: counter(hc); position: absolute; left: 0; top: 9px;
  width: 24px; height: 24px; border-radius: 50%; background: var(--teal-pale); color: var(--teal);
  font-size: 12px; font-weight: 800; display: grid; place-items: center;
}
.hero-card p { font-size: 13px; color: var(--muted); margin: 0; }

/* ---------------------------------------------------------- 区块 */
.section { padding: clamp(44px, 6vw, 76px) 0; }
.section.alt { background: var(--bg); }
.section-head { max-width: 720px; margin-bottom: 26px; }
.section-head h2 { font-size: clamp(24px, 3vw, 34px); }
.section-head p:last-child { color: var(--muted); font-size: 15px; }
.section-head-row { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.section-more { font-size: 14px; color: var(--teal); font-weight: 600; white-space: nowrap; }

/* ---------------------------------------------------------- 设备卡片（首页） */
.cards { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
.cards a {
  position: relative; display: block; padding: 22px 20px 18px; border: 1px solid var(--line);
  border-radius: var(--radius); background: #fff; transition: .2s ease; overflow: hidden;
}
.cards a::after { content: ""; position: absolute; inset: auto 0 0 0; height: 3px; background: var(--teal); transform: scaleX(0); transform-origin: left; transition: .25s; }
.cards a:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: #cfe2dd; }
.cards a:hover::after { transform: scaleX(1); }
.cards span { font-size: 11px; font-weight: 800; color: var(--teal-2); letter-spacing: .08em; }
.cards h3 { font-size: 17px; margin: 10px 0 6px; }
.cards p { font-size: 13px; color: var(--muted); margin: 0 0 12px; min-height: 58px; }
.cards b { font-size: 12.5px; color: var(--teal); }

/* ---------------------------------------------------------- 信任四卡 */
.trust-cards { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
.trust-cards article { padding: 22px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); }
.trust-cards h3 { font-size: 16.5px; margin: 10px 0 6px; }
.trust-cards p { font-size: 13.5px; color: var(--muted); margin: 0 0 12px; }
.trust-cards a { font-size: 13px; color: var(--teal); font-weight: 600; }
.trust-number { font-size: 12px; font-weight: 800; color: var(--teal-2); letter-spacing: .1em; }

/* ---------------------------------------------------------- 采购角色 / 知识条 */
.buyer-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.buyer-grid article { padding: 20px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
.buyer-grid h3 { font-size: 16px; margin-bottom: 6px; }
.buyer-grid p { font-size: 13.5px; color: var(--muted); margin-bottom: 10px; }
.buyer-grid a { font-size: 13px; color: var(--teal); font-weight: 600; }

.knowledge { border-top: 1px solid var(--line); }
.knowledge a { display: flex; justify-content: space-between; align-items: baseline; gap: 20px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.knowledge b { font-size: 15.5px; font-weight: 600; }
.knowledge span { font-size: 13px; color: var(--muted); text-align: right; }

/* ---------------------------------------------------------- 需求表单 */
.request { display: grid; grid-template-columns: .85fr 1.15fr; gap: clamp(24px, 5vw, 60px); align-items: start; }
.request h2 { font-size: clamp(24px, 3.2vw, 34px); }
.request-copy p, .request-copy li { color: var(--ink-2); font-size: 14.5px; }
.request-copy ul { padding-left: 20px; }
.form { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow); }
.form h3 { font-size: 19px; margin-bottom: 18px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form label { display: block; font-size: 12.5px; font-weight: 600; color: #33504f; }
.form input, .form select, .form textarea {
  display: block; width: 100%; margin-top: 5px; padding: 10px 12px;
  border: 1px solid #d3e1de; border-radius: 6px; font: inherit; font-size: 14px; color: var(--ink); background: #fff;
}
.form input:focus, .form select:focus, .form textarea:focus { outline: 2px solid rgba(18, 137, 122, .35); border-color: var(--teal-2); }
.form .wide { grid-column: 1 / -1; }
.consent { display: flex !important; align-items: flex-start; gap: 8px; margin: 18px 0 6px; font-weight: 400 !important; font-size: 13px !important; }
.consent input { width: auto; margin: 5px 0 0; }
.consent a { color: var(--teal); text-decoration: underline; }
.consent-note { font-size: 12px; color: var(--muted); }
.submit { width: 100%; margin-top: 8px; }
.hp { position: absolute !important; left: -9999px !important; }
#formMessage { font-size: 13.5px; margin: 10px 0 0; }
#formMessage.error { color: #b3261e; }
.tool-panel { border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; background: #fff; }
.tool-panel h3 { font-size: 17px; }

/* ---------------------------------------------------------- CTA 通栏 */
.cta-band { background: linear-gradient(120deg, #0d4a44, #12695e 60%, #16806f); color: #eaf6f3; padding: clamp(34px, 5vw, 56px) 0; }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 28px; flex-wrap: wrap; }
.cta-band h2 { color: #fff; font-size: clamp(21px, 2.6vw, 29px); margin-bottom: 6px; }
.cta-band p { color: #c2e0da; margin: 0; max-width: 640px; font-size: 14.5px; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.cta-band .btn-primary { background: #fff; color: #0d4a44; box-shadow: none; }
.cta-band .btn-primary:hover { color: #0d4a44; }
.cta-band .btn-dark { background: rgba(255, 255, 255, .14); border-color: rgba(255, 255, 255, .3); }
.cta-band .btn-ghost { background: transparent; border-color: rgba(255, 255, 255, .35); color: #eaf6f3; }
.cta-band .btn-ghost:hover { color: #fff; border-color: #fff; }

/* ---------------------------------------------------------- 面包屑 */
.crumbs { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; padding-top: 18px; font-size: 12.5px; color: var(--muted); }
.crumbs a:hover { color: var(--teal); }
.crumbs i { font-style: normal; color: #b9cdc9; }

/* ---------------------------------------------------------- 详情页 Hero */
.seo-hero { background: linear-gradient(160deg, #eff8f5 0%, #f9fcfb 70%); border-bottom: 1px solid var(--line); }
.seo-hero-inner { display: grid; grid-template-columns: 1.25fr .75fr; gap: clamp(20px, 4vw, 50px); align-items: center; padding: clamp(30px, 4.5vw, 56px) 0; }
.seo-hero h1 { font-size: clamp(26px, 3.6vw, 42px); }
.seo-hero .lede { font-size: clamp(14.5px, 1.3vw, 16.5px); color: var(--ink-2); max-width: 640px; }
.seo-hero-fig { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 14px; box-shadow: var(--shadow); }
.seo-hero-fig svg { display: block; width: 100%; height: auto; border-radius: 8px; }
.seo-hero-fig figcaption { font-size: 11.5px; color: var(--muted); text-align: center; margin-top: 8px; }
/* 详情页 hero 实拍图 */
.seo-hero-photo {
  margin: 0; background: #fff; border: 1px solid var(--line); border-radius: 12px;
  padding: 10px; box-shadow: var(--shadow); overflow: hidden;
}
.seo-hero-photo img {
  display: block; width: 100%; height: auto; aspect-ratio: 1024 / 931;
  object-fit: cover; border-radius: 8px;
}
.seo-hero-photo figcaption { font-size: 11.5px; color: var(--muted); text-align: center; margin-top: 11px; line-height: 1.5; }

.kv-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 8px; overflow: hidden; margin: 20px 0 0; }
.kv-grid.wide { grid-template-columns: repeat(2, minmax(0, 1fr)); margin: 0 0 28px; }
.kv { background: #fff; padding: 12px 14px; }
.kv dt { font-size: 11.5px; font-weight: 700; color: var(--teal-2); letter-spacing: .04em; margin-bottom: 3px; }
.kv dd { margin: 0; font-size: 13.5px; color: var(--ink-2); }

/* ---------------------------------------------------------- 正文排版 */
.seo-body { padding: clamp(30px, 4vw, 48px) clamp(16px, 4vw, 32px) clamp(40px, 5vw, 64px); max-width: 900px; }
.article-body { max-width: 860px; padding-top: clamp(26px, 4vw, 40px); padding-bottom: clamp(40px, 5vw, 64px); }
.seo-sec h2 { font-size: clamp(19px, 2.2vw, 24px); margin-top: 1.7em; padding-left: 13px; border-left: 3px solid var(--teal); }
.seo-sec:first-child h2 { margin-top: 0; }
.seo-sec p, .article-body p { color: #334d51; font-size: 15.5px; }
.ticks { list-style: none; padding-left: 0; }
.ticks li { position: relative; padding-left: 22px; margin-bottom: 8px; font-size: 14.5px; color: #334d51; }
.ticks li::before { content: ""; position: absolute; left: 0; top: .62em; width: 7px; height: 7px; border-radius: 2px; background: var(--teal-2); transform: rotate(45deg); }

.callout { background: var(--amber-pale); border-left: 3px solid #d9913f; border-radius: 0 8px 8px 0; padding: 16px 20px; margin: 26px 0; }
.callout strong { display: block; font-size: 13.5px; color: #8a4c11; margin-bottom: 4px; }
.callout p { margin: 0; font-size: 14px; color: #6b5238; }

.table-wrap { overflow-x: auto; margin: 16px 0 26px; border: 1px solid var(--line); border-radius: 8px; }
table.params { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 560px; }
table.params th, table.params td { padding: 11px 14px; text-align: left; border-bottom: 1px solid var(--line-2); vertical-align: top; }
table.params thead th { background: var(--teal-pale); color: #134e46; font-size: 12.5px; letter-spacing: .04em; }
table.params tbody th { font-weight: 600; color: var(--ink); width: 22%; }
table.params tbody tr:last-child th, table.params tbody tr:last-child td { border-bottom: 0; }
table.params tbody tr:hover { background: #fbfdfc; }

/* 流程 */
.flow { list-style: none; padding: 0; margin: 18px 0 28px; display: grid; gap: 10px; counter-reset: f; }
.flow li { display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #fff; border: 1px solid var(--line); border-radius: 8px; }
.step-no { flex: 0 0 auto; font-size: 11.5px; font-weight: 800; color: var(--teal-2); background: var(--teal-pale); border-radius: 5px; padding: 3px 7px; margin-top: 2px; }
.flow b { font-size: 14.5px; display: block; }
.flow p { margin: 2px 0 0; font-size: 13.5px; color: var(--muted); }

/* FAQ */
.faq-sec { margin-top: 40px; }
.faq-sec h2 { font-size: clamp(20px, 2.4vw, 26px); }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { cursor: pointer; padding: 15px 30px 15px 0; font-weight: 600; font-size: 15px; list-style: none; position: relative; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; position: absolute; right: 4px; top: 13px; color: var(--teal-2); font-size: 19px; font-weight: 400; }
.faq-list details[open] summary::after { content: "−"; }
.faq-a p { margin: 0 0 16px; font-size: 14.5px; color: #3c575b; }

/* 内链 */
.link-sec { margin-top: 40px; }
.link-sec h2 { font-size: clamp(20px, 2.4vw, 26px); }
.linkgrid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 12px; }
.linkcard { display: block; padding: 16px 18px; border: 1px solid var(--line); border-radius: 8px; background: #fff; transition: .18s; }
.linkcard:hover { border-color: var(--teal-2); box-shadow: var(--shadow); transform: translateY(-2px); }
.linkcard b { display: block; font-size: 14.5px; margin-bottom: 4px; }
.linkcard span { display: block; font-size: 12.5px; color: var(--muted); line-height: 1.6; }

/* ---------------------------------------------------------- 列表页 */
.hub-hero { padding: clamp(38px, 5vw, 60px) 0 clamp(24px, 3vw, 36px); background: linear-gradient(160deg, #eef7f4, #fbfdfc); border-bottom: 1px solid var(--line); }
.hub-hero h1 { font-size: clamp(28px, 4vw, 44px); }
.hub-hero .lede { max-width: 760px; color: var(--ink-2); font-size: 15.5px; }
.pgrid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; padding: clamp(26px, 4vw, 44px) 0; }
.pgrid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.pcard { display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: 12px; background: #fff; overflow: hidden; transition: .2s; }
.pcard:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); border-color: #cfe2dd; }
.pcard-fig { display: block; padding: 18px; background: linear-gradient(140deg, #f0f8f6, #fbfdfc); }
.pcard-fig svg { width: 100%; height: 148px; display: block; }
/* 实拍图卡片：满幅出血 + 悬停轻缩放，提升画面质感 */
.pcard-fig.has-photo { padding: 0; aspect-ratio: 16 / 10; overflow: hidden; background: #dfe9e7; }
.pcard-fig.has-photo img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .5s ease; }
.pcard:hover .pcard-fig.has-photo img { transform: scale(1.045); }
.pcard-body { padding: 18px 20px 20px; display: flex; flex-direction: column; flex: 1; }
.pcard-tag { font-size: 10.5px; letter-spacing: .14em; color: var(--teal-2); font-weight: 700; margin: 0 0 4px; text-transform: uppercase; }
.pcard-body h3 { font-size: 18.5px; margin: 0 0 7px; }
.pcard-body p { font-size: 13.5px; color: var(--muted); flex: 1; }
.more { font-size: 13px; color: var(--teal); font-weight: 600; }
.kgrid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; padding: clamp(26px, 4vw, 44px) 0; }
.kcard { border: 1px solid var(--line); border-radius: 12px; padding: 20px 22px; background: #fff; transition: .2s; }
.kcard:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.kcard-top { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.kicon { width: 34px; height: 34px; border-radius: 8px; background: var(--teal-pale); display: grid; place-items: center; overflow: hidden; }
.kicon svg { width: 26px; height: 26px; }
.ktag { font-size: 11.5px; color: var(--teal-2); background: var(--teal-pale); padding: 2px 8px; border-radius: 20px; }
.kcard h3 { font-size: 17px; margin: 0 0 6px; }
.kcard p { font-size: 13.5px; color: var(--muted); }

/* ---------------------------------------------------------- 文章页 */
.article-hero { background: linear-gradient(160deg, #eff8f5, #fbfdfc); border-bottom: 1px solid var(--line); }
.article-hero-inner { display: flex; gap: 20px; align-items: flex-start; padding: clamp(30px, 4.5vw, 52px) clamp(16px, 4vw, 32px); max-width: 900px; }
.article-icon { flex: 0 0 auto; width: 56px; height: 56px; border-radius: 12px; background: #fff; border: 1px solid var(--line); display: grid; place-items: center; }
.article-icon svg { width: 40px; height: 40px; }
.article-hero h1 { font-size: clamp(24px, 3.4vw, 38px); margin-bottom: 8px; }
.article-hero .lede { color: var(--ink-2); font-size: 15.5px; }
.article-meta { font-size: 12.5px; color: var(--muted); margin: 6px 0 0; }

/* ---------------------------------------------------------- 页脚 */
.footer { background: #0b2b2f; color: #bcd3d2; font-size: 13.5px; margin-top: 0; }
.footgrid { display: grid; grid-template-columns: 1.3fr repeat(4, 1fr); gap: 30px; padding: clamp(34px, 5vw, 56px) clamp(16px, 4vw, 32px) 30px; }
.foot-brand { color: #fff; font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.foot-about p { color: #93b0ae; font-size: 13px; max-width: 280px; }
.foot-contact a { color: #8fd8c8; font-weight: 600; }
.foot-col h4 { color: #fff; font-size: 13.5px; letter-spacing: .06em; margin-bottom: 12px; }
.foot-col ul { list-style: none; padding: 0; margin: 0; }
.foot-col li { margin-bottom: 8px; }
.foot-col a { color: #93b0ae; font-size: 13px; }
.foot-col a:hover { color: #8fd8c8; }
.footer-bottom { display: flex; flex-wrap: wrap; gap: 8px 20px; align-items: center; padding: 16px clamp(16px, 4vw, 32px) 26px; border-top: 1px solid rgba(255, 255, 255, .09); font-size: 12px; color: #7f9c9a; }
.footer-bottom a { color: #9dbfbc; }
/* ICP 备案号：合规展示位，链接到工信部备案系统 */
.footer-bottom a.icp { color: #9dbfbc; text-decoration: none; padding: 1px 8px; border: 1px solid rgba(157, 191, 188, .32); border-radius: 999px; transition: .18s; }
.footer-bottom a.icp:hover, .footer-bottom a.icp:focus-visible { color: #fff; border-color: rgba(157, 191, 188, .75); background: rgba(255, 255, 255, .06); }

/* ---------------------------------------------------- 正文配图（Markdown） */
.md-fig { margin: 26px 0; text-align: center; }
.md-fig img { display: block; width: 100%; height: auto; border-radius: 10px; border: 1px solid var(--line); background: #fff; }
.md-fig figcaption { margin-top: 10px; font-size: 13px; color: #5b7571; line-height: 1.6; }
.prose img, .article-body img { max-width: 100%; height: auto; border-radius: 10px; }
.prose p > img, .article-body p > img { display: block; margin: 22px auto; border: 1px solid var(--line); }

/* ---------------------------------------------------------- 管理后台 */
.admin-wrap { max-width: 1320px; margin: 0 auto; padding: 24px clamp(14px, 3vw, 28px) 60px; }
.admin-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 18px; }
.admin-panel { border: 1px solid var(--line); border-radius: 10px; padding: 20px; margin: 16px 0; background: #fff; overflow: auto; }
.admin-panel h2 { font-size: 18px; margin-bottom: 10px; }
.admin-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin: 16px 0; }
.metric { background: var(--teal-pale); border-radius: 8px; padding: 16px; }
.metric span { font-size: 12.5px; color: #4b6d68; }
.metric b { display: block; font-size: 26px; color: var(--teal); }
.admin-panel input, .admin-panel select, .admin-panel textarea { padding: 8px 10px; border: 1px solid #c9dad6; background: #fff; border-radius: 6px; margin: 3px; font: inherit; font-size: 13px; min-width: 120px; }
.admin-panel input:focus, .admin-panel select:focus, .admin-panel textarea:focus { outline: 2px solid var(--teal); outline-offset: 1px; }
.admin-panel button { padding: 8px 13px; background: var(--teal); color: #fff; border: 0; border-radius: 6px; cursor: pointer; font-size: 13px; margin: 2px; }
.admin-panel button.ghost { background: #fff; color: var(--teal); border: 1px solid var(--line); }
.admin-panel button:disabled { opacity: .5; cursor: not-allowed; }
.admin-panel table { border-collapse: collapse; width: 100%; font-size: 12.5px; }
.admin-panel td, .admin-panel th { border-bottom: 1px solid var(--line-2); padding: 9px 8px; text-align: left; vertical-align: top; }
.admin-panel th { background: #f4f9f7; font-size: 12px; color: #3c5c58; }
.admin-form { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 14px; }
.admin-form label { font-size: 12px; display: flex; flex-direction: column; gap: 3px; color: #4a6662; }
.status { padding: 2px 7px; border-radius: 20px; background: var(--teal-pale); font-size: 11.5px; }
.warning { background: var(--amber-pale); color: #8a4c11; padding: 10px 12px; border-radius: 6px; font-size: 13px; }
.tabs { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 12px; }.tabs button { background: #fff; color: var(--ink-2); border: 1px solid var(--line); }
.tabs button.active { background: var(--teal); color: #fff; border-color: var(--teal); }

/* ---------------------------------------------------------- 响应式 */
@media (max-width: 1080px) {
  .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .trust-cards, .buyer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footgrid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 900px) {
  .hero-photo::before {
    background: linear-gradient(180deg, rgba(244, 251, 248, .80) 0%, rgba(240, 249, 245, .86) 100%);
  }
  .hero-inner, .request, .seo-hero-inner { grid-template-columns: 1fr; }
  .seo-hero-fig, .seo-hero-photo { order: -1; max-width: 460px; }
  .navtoggle { display: block; }
  .nav { flex-wrap: wrap; padding-top: 10px; padding-bottom: 10px; }
  .nav nav { display: none; width: 100%; flex-direction: column; align-items: flex-start; gap: 2px; padding-bottom: 10px; }
  .nav nav.open { display: flex; }
  .nav nav a { padding: 9px 0; width: 100%; border-bottom: 1px solid var(--line-2); }
  .navcta { margin-top: 8px; text-align: center; border-bottom: 0 !important; }
  .pgrid, .pgrid.two, .kgrid { grid-template-columns: 1fr; }
  .admin-grid { grid-template-columns: repeat(2, 1fr); }
  .kv-grid, .kv-grid.wide { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  body { font-size: 15.5px; }
  .cards, .trust-cards, .buyer-grid { grid-template-columns: 1fr; }
  .form { padding: 18px; }
  .form-grid { grid-template-columns: 1fr; }
  .knowledge a { display: block; }
  .knowledge span { display: block; text-align: left; }
  .topinner { font-size: 11.5px; }
  .top-tag { display: none; }
  .cta-actions { width: 100%; }
  .cta-actions .btn { flex: 1 1 auto; }
  .article-hero-inner { flex-direction: column; }
  .footgrid { grid-template-columns: 1fr; gap: 22px; }
  .seo-body { padding-left: 16px; padding-right: 16px; }
}

@media print {
  .header, .footer, .cta-band, .topline, .navtoggle, .hero-actions, .crumbs { display: none !important; }
  body { color: #000; }
  .tool-panel, .form { border: 1px solid #999; box-shadow: none; }
  a[href]::after { content: ""; }
}

/* ---------------------------------------------------------- 后台推送日志 */
.push-log {
  background: #0f2624; color: #c8f0e5; padding: 14px 16px; border-radius: 8px;
  font-size: 12px; line-height: 1.7; max-height: 320px; overflow: auto;
  white-space: pre-wrap; word-break: break-all; margin: 12px 0 0;
}
.admin-panel code { background: #eef6f4; padding: 1px 5px; border-radius: 4px; font-size: 12px; }
.push-today { background: #f4f9f7; border: 1px solid var(--line); border-radius: 8px; padding: 12px 14px; font-size: 13px; line-height: 1.9; color: var(--ink-2); }
.push-today .push-line { margin: 2px 0; }
.push-hist-title { font-size: 14px; margin: 20px 0 8px; color: #3c5c58; }
.article-form { display: flex; flex-wrap: wrap; gap: 10px; }
.article-form label { font-size: 12px; display: flex; flex-direction: column; gap: 3px; color: #4a6662; flex: 1 1 220px; }
.article-form label input[type=checkbox] { width: auto; }
.article-form .art-wide { flex: 1 1 100%; display: flex; flex-direction: column; gap: 6px; font-size: 12px; color: #4a6662; }
.article-form textarea { font-family: ui-monospace, Consolas, monospace; font-size: 13px; line-height: 1.7; }
.faq-row { display: flex; gap: 6px; flex-wrap: wrap; }
.chkgrid { display: flex; flex-wrap: wrap; gap: 4px 14px; }
.article-form .chkline { flex-direction: row !important; align-items: center; gap: 6px !important; font-weight: 600; }

/* 正文编辑器图片工具条与图片库 */
.md-toolbar { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.md-toolbar .md-tip { flex: 1 1 200px; font-size: 11.5px; color: #7b918d; font-weight: 400; }
button.sm { padding: 5px 12px !important; font-size: 12.5px !important; }
.img-lib { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 8px; padding: 10px; border: 1px dashed #c9dad6; border-radius: 8px; background: #f8fbfa; max-height: 300px; overflow: auto; }
.img-lib .md-tip { grid-column: 1 / -1; font-size: 12px; color: #7b918d; }
.lib-item { display: flex; flex-direction: column; gap: 4px; padding: 5px; border: 1px solid #dde8e5; border-radius: 7px; background: #fff; cursor: pointer; font: inherit; overflow: hidden; }
.lib-item:hover, .lib-item:focus-visible { border-color: var(--teal); box-shadow: 0 0 0 2px rgba(15, 110, 96, .12); }
.lib-item img { width: 100%; height: 74px; object-fit: cover; border-radius: 5px; display: block; background: #eef4f2; }
.lib-item span { font-size: 11px; color: #5b7571; text-align: center; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }