/*
Theme Name: 华算科技 Huasuan
Theme URI: https://geo555.com
Author: 苏州华算科技有限公司
Description: 外贸独立站 × GEO 优化主题，浅色 B 端风格（Ramp 语言），首页 8 区块全部后台可编辑，含 FAQ/Organization 结构化数据。
Version: 1.0.0
Requires at least: 6.4
Requires PHP: 7.4
License: GNU General Public License v2 or later
Text Domain: huasuan
Tags: business, custom-menu, custom-logo, featured-images, translation-ready
*/

/* ============ 1. 设计令牌 ============ */
:root {
  --color-bg: #FFFFFF;
  --color-bg-alt: #F4F2F0;
  --color-ink: #1F1F1D;
  --color-ink-2: #6B6B66;
  --color-ink-3: #9A958B;
  --color-brand: #0066FF;
  --color-brand-hover: #0052CC;
  --color-brand-soft: #CCE0FF;
  --color-line: #E8E5E1;
  --color-chip: #EAE7E3;

  --font-sans: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
  --font-num: "Inter Tight", "Inter", -apple-system, "Segoe UI", sans-serif;

  --sidebar: 64px;
  --maxw: 1312px;
  --radius-card: 12px;
  --radius-btn: 6px;
  --radius-pill: 99px;

  --fs-hero: clamp(32px, 4.45vw, 64px);
  --fs-h2: clamp(22px, 2.36vw, 34px);
  --fs-page-title: clamp(26px, 2.78vw, 40px);
  --fs-card-title: clamp(15px, 1.32vw, 19px);
  --fs-body: clamp(14px, 1.18vw, 17px);
  --fs-small: 13px;
  --fs-xs: 12px;
  --fs-num: clamp(26px, 2.64vw, 38px);

  --section-y: clamp(36px, 6.1vw, 92px);
}

/* ============ 2. 基础重置 ============ */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-brand); text-decoration: none; }
a:hover { color: var(--color-brand-hover); }
h1, h2, h3, h4 { margin: 0; line-height: 1.25; font-weight: 600; letter-spacing: -0.01em; }
p { margin: 0 0 1em; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button { font: inherit; cursor: pointer; }
:focus-visible { outline: 2px solid var(--color-brand); outline-offset: 3px; }

.screen-reader-text {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* ============ 3. 布局容器 ============ */
.hs-container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding-left: var(--sidebar); padding-right: var(--sidebar); }
.hs-section { padding-top: var(--section-y); padding-bottom: var(--section-y); }
.hs-section--alt { background: var(--color-bg-alt); }

/* 区块标题组 */
.hs-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: clamp(24px, 3.6vw, 44px); }
.hs-head__left { display: flex; flex-direction: column; gap: 12px; }
.hs-eyebrow {
  font-family: var(--font-num); font-size: 11px; font-weight: 600;
  letter-spacing: .14em; text-transform: uppercase; color: var(--color-ink-3);
}
.hs-h2 { font-size: var(--fs-h2); font-weight: 600; }
.hs-head__note { font-size: var(--fs-small); color: var(--color-ink-2); white-space: nowrap; }
.hs-head__link { font-size: var(--fs-small); color: var(--color-ink-2); }
.hs-head__link:hover { color: var(--color-brand); }

/* ============ 4. 按钮 ============ */
.hs-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 15px 26px; border-radius: var(--radius-btn);
  font-size: 14px; font-weight: 600; line-height: 1; border: 0;
  transition: background .18s ease, color .18s ease, transform .18s ease;
}
.hs-btn--primary { background: var(--color-brand); color: #fff; }
.hs-btn--primary:hover { background: var(--color-brand-hover); color: #fff; }
.hs-btn--ghost { background: var(--color-chip); color: var(--color-ink); }
.hs-btn--ghost:hover { background: #dfdbd6; color: var(--color-ink); }
.hs-btn--light { background: #fff; color: var(--color-brand); }
.hs-btn--light:hover { background: #F0F5FF; color: var(--color-brand); }
.hs-btn--outline { background: transparent; color: var(--color-ink); box-shadow: inset 0 0 0 1px var(--color-line); }
.hs-btn--outline:hover { background: var(--color-bg-alt); color: var(--color-ink); }
.hs-btn--sm { padding: 9px 18px; font-size: 13px; }
.hs-btn--block { width: 100%; }

/* ============ 5. 导航 ============ */
.hs-header { position: sticky; top: 0; z-index: 60; background: rgba(255,255,255,.92); backdrop-filter: saturate(180%) blur(12px); border-bottom: 1px solid var(--color-line); }
.hs-nav { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 32px; }
.hs-nav__left { display: flex; align-items: center; gap: 44px; min-width: 0; }
.hs-logo { display: flex; align-items: center; gap: 10px; font-size: 19px; font-weight: 700; color: var(--color-ink); letter-spacing: -0.01em; }
.hs-logo:hover { color: var(--color-ink); }
.hs-logo img { height: 32px; width: auto; }
.hs-logo__mark { width: 26px; height: 26px; border-radius: 7px; background: var(--color-brand); display: grid; place-items: center; color: #fff; font-size: 13px; font-weight: 700; }
.hs-menu { display: flex; align-items: center; gap: 26px; }
.hs-menu li { position: relative; }
.hs-menu a { font-size: 14px; color: var(--color-ink-2); padding: 6px 0; display: inline-block; }
.hs-menu a:hover, .hs-menu .current-menu-item > a, .hs-menu .is-active > a { color: var(--color-brand); }
.hs-menu .sub-menu {
  position: absolute; top: calc(100% + 10px); left: -18px; min-width: 210px;
  background: #fff; border: 1px solid var(--color-line); border-radius: 10px;
  padding: 10px; display: none; flex-direction: column; gap: 2px;
  box-shadow: 0 12px 32px rgba(31,31,29,.08);
}
.hs-menu li:hover > .sub-menu, .hs-menu li:focus-within > .sub-menu { display: flex; }
.hs-menu .sub-menu a { padding: 8px 12px; border-radius: 6px; font-size: 13px; }
.hs-menu .sub-menu a:hover { background: var(--color-bg-alt); }
.hs-nav__right { display: flex; align-items: center; gap: 18px; flex-shrink: 0; }
.hs-nav__tel { font-family: var(--font-num); font-size: 13px; color: var(--color-ink-2); }
.hs-nav__tel:hover { color: var(--color-brand); }
.hs-burger { display: none; width: 40px; height: 40px; border: 0; background: transparent; padding: 0; }
.hs-burger span { display: block; width: 22px; height: 1.5px; background: var(--color-ink); margin: 4.5px auto; transition: transform .2s ease, opacity .2s ease; }
.hs-burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.hs-burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.hs-burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* 移动抽屉 */
.hs-drawer { display: none; border-top: 1px solid var(--color-line); background: #fff; }
.hs-drawer.is-open { display: block; }
.hs-drawer .hs-container { padding-top: 8px; padding-bottom: 20px; }
.hs-drawer ul { display: flex; flex-direction: column; }
.hs-drawer a { display: block; padding: 13px 0; font-size: 15px; color: var(--color-ink); border-bottom: 1px solid var(--color-line); }
.hs-drawer .sub-menu a { padding-left: 16px; font-size: 14px; color: var(--color-ink-2); }
.hs-drawer__cta { margin-top: 16px; display: flex; flex-direction: column; gap: 10px; }

/* ============ 6. 首页 Hero ============ */
.hs-hero { background: var(--color-bg-alt); padding: clamp(44px, 6.4vw, 96px) 0 clamp(36px, 5.2vw, 88px); }
.hs-hero__inner { display: grid; grid-template-columns: 1.08fr 0.92fr; gap: clamp(28px, 4vw, 64px); align-items: center; }
.hs-hero__main { display: flex; flex-direction: column; gap: 22px; }
.hs-hero__pic img { width: 100%; height: auto; border-radius: var(--radius-card); display: block; }
.hs-hero .hs-stats { grid-column: 1 / -1; }
.hs-badge {
  display: inline-flex; align-items: center; gap: 8px; align-self: flex-start;
  padding: 7px 14px; border-radius: var(--radius-pill); background: var(--color-chip);
  font-size: var(--fs-xs); color: var(--color-ink-2);
}
.hs-badge__dot { width: 6px; height: 6px; border-radius: 50%; background: var(--color-brand); flex-shrink: 0; }
.hs-hero h1 { font-size: var(--fs-hero); line-height: 1.14; font-weight: 600; max-width: 15em; letter-spacing: -0.02em; }
.hs-hero h1 em { font-style: normal; color: var(--color-brand); }
.hs-hero__sub { font-size: clamp(15px, 1.25vw, 17px); color: var(--color-ink-2); max-width: 40em; line-height: 1.8; }
.hs-hero__cta { display: flex; gap: 12px; padding-top: 6px; flex-wrap: wrap; }

/* 数据背书 */
.hs-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid var(--color-line); padding-top: 32px; margin-top: 8px; }
.hs-stat { display: flex; flex-direction: column; gap: 6px; padding-right: 24px; }
.hs-stat__num { font-family: var(--font-num); font-size: var(--fs-num); font-weight: 600; color: var(--color-brand); line-height: 1.1; }
.hs-stat__label { font-size: var(--fs-small); color: var(--color-ink-2); }

/* ============ 7. 业务板块卡 ============ */
.hs-biz-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.hs-biz {
  display: flex; flex-direction: column; gap: 8px; padding: 26px;
  background: #fff; border-radius: var(--radius-card); border: 1px solid var(--color-line);
  transition: border-color .18s ease, transform .18s ease;
}
.hs-biz:hover { border-color: #cfc9c2; transform: translateY(-2px); }
.hs-biz__no { font-family: var(--font-num); font-size: 12px; font-weight: 500; color: var(--color-ink-3); }
.hs-biz__title { font-size: var(--fs-card-title); font-weight: 600; }
.hs-biz__title a { color: inherit; }
.hs-biz__tag {
  align-self: flex-start; font-size: 11px; padding: 3px 8px; border-radius: 5px;
  background: #EAF1FF; color: var(--color-brand); font-weight: 500;
}
.hs-biz__tag--support { background: var(--color-chip); color: var(--color-ink-2); }
.hs-biz__list { display: flex; flex-direction: column; gap: 2px; padding-top: 8px; }
.hs-biz__list a, .hs-biz__list span { font-size: 14px; color: var(--color-ink-2); line-height: 1.9; }
.hs-biz__list a:hover { color: var(--color-brand); }
.hs-biz__thumb { margin: -26px -26px 16px; }
.hs-biz__thumb img { width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; display: block; border-radius: calc(var(--radius-card) - 1px) calc(var(--radius-card) - 1px) 0 0; }

/* ============ 8. 优势 ============ */
.hs-why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.hs-why { display: flex; flex-direction: column; gap: 10px; padding: 24px; background: var(--color-bg-alt); border-radius: var(--radius-card); }
.hs-section--alt .hs-why { background: #fff; border: 1px solid var(--color-line); }
.hs-why__icon { width: 32px; height: 32px; border-radius: 8px; background: #EAF1FF; color: var(--color-brand); display: grid; place-items: center; font-size: 15px; font-weight: 700; }
.hs-why__title { font-size: 16px; font-weight: 600; }
.hs-why__desc { font-size: var(--fs-small); color: var(--color-ink-2); line-height: 1.75; }

/* ============ 9. 案例 ============ */
.hs-cases { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.hs-case { display: flex; flex-direction: column; padding: 26px; background: #fff; border: 1px solid var(--color-line); border-radius: var(--radius-card); transition: border-color .18s ease, transform .18s ease; }
.hs-case:hover { border-color: #cfc9c2; transform: translateY(-2px); }
.hs-case__tag { align-self: flex-start; font-size: 11px; padding: 4px 9px; border-radius: 5px; background: var(--color-chip); color: var(--color-ink-2); }
.hs-case__title { font-size: 18px; font-weight: 600; margin-top: 14px; }
.hs-case__title a { color: inherit; }
.hs-case__metric { margin-top: auto; padding-top: 20px; display: flex; flex-direction: column; gap: 2px; }
.hs-case__num { font-family: var(--font-num); font-size: 34px; font-weight: 600; color: var(--color-brand); line-height: 1.1; }
.hs-case__label { font-size: var(--fs-xs); color: var(--color-ink-2); }
.hs-case__thumb { margin: -26px -26px 4px; }
.hs-case__thumb img { width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; display: block; border-radius: calc(var(--radius-card) - 1px) calc(var(--radius-card) - 1px) 0 0; }

/* ============ 10. FAQ ============ */
.hs-faq { display: flex; flex-direction: column; background: #fff; border: 1px solid var(--color-line); border-radius: var(--radius-card); overflow: hidden; }
.hs-section .hs-faq { background: #fff; }
.hs-faq__item { border-bottom: 1px solid var(--color-line); }
.hs-faq__item:last-child { border-bottom: 0; }
.hs-faq__q {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 20px;
  padding: 20px 24px; background: transparent; border: 0; text-align: left;
  font-size: 16px; font-weight: 500; color: var(--color-ink); line-height: 1.6;
}
.hs-faq__q:hover { background: #FBFAF9; }
.hs-faq__sign { flex-shrink: 0; font-family: var(--font-num); font-size: 19px; color: var(--color-ink-3); line-height: 1; }
.hs-faq__a { display: none; padding: 0 24px 22px; font-size: 14px; color: var(--color-ink-2); line-height: 1.85; }
.hs-faq__item.is-open .hs-faq__a { display: block; }
.hs-faq__item.is-open .hs-faq__sign { color: var(--color-brand); }

/* ============ 11. 底部 CTA ============ */
.hs-cta-wrap { padding-bottom: var(--section-y); }
.hs-cta {
  display: flex; flex-direction: column; align-items: center; gap: 18px;
  padding: clamp(36px, 5.3vw, 76px) clamp(22px, 4.4vw, 64px);
  background: var(--color-brand); border-radius: 16px; text-align: center;
}
.hs-cta h2 { font-size: clamp(22px, 2.9vw, 42px); color: #fff; font-weight: 600; }
.hs-cta p { font-size: 15px; color: var(--color-brand-soft); margin: 0; max-width: 46em; }
.hs-cta__btns { display: flex; gap: 12px; padding-top: 8px; flex-wrap: wrap; justify-content: center; }

/* ============ 12. 页脚 ============ */
.hs-footer { border-top: 1px solid var(--color-line); padding: clamp(36px, 5vw, 56px) 0 28px; }
.hs-footer__top { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr 1.2fr; gap: 48px; }
.hs-footer__brand { display: flex; flex-direction: column; gap: 14px; }
.hs-footer__desc { font-size: var(--fs-small); color: var(--color-ink-2); line-height: 1.8; max-width: 300px; }
.hs-footer__col { display: flex; flex-direction: column; gap: 12px; }
.hs-footer__col h3 { font-size: 13px; font-weight: 600; color: var(--color-ink); }
.hs-footer__col a, .hs-footer__col span { font-size: 13px; color: var(--color-ink-2); }
.hs-footer__col a:hover { color: var(--color-brand); }
.hs-footer__bot { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--color-line); }
.hs-footer__bot p, .hs-footer__bot a { font-size: var(--fs-xs); color: var(--color-ink-3); margin: 0; }

/* ============ 13. 内页通用 ============ */
.hs-crumb { padding: 14px 0; display: flex; gap: 8px; align-items: center; font-size: var(--fs-xs); color: var(--color-ink-3); }
.hs-crumb a { color: var(--color-ink-3); }
.hs-crumb a:hover { color: var(--color-brand); }
.hs-crumb strong { color: var(--color-ink); font-weight: 500; }

.hs-page-hero { background: var(--color-bg-alt); padding: clamp(36px, 4.4vw, 56px) 0 clamp(30px, 3.7vw, 48px); }
.hs-page-hero__inner { display: flex; flex-direction: column; gap: 16px; }
.hs-page-hero h1 { font-size: var(--fs-page-title); font-weight: 600; line-height: 1.2; }
.hs-page-hero p { font-size: 15px; color: var(--color-ink-2); max-width: 46em; line-height: 1.8; margin: 0; }
.hs-page-hero__cta { display: flex; gap: 12px; padding-top: 8px; flex-wrap: wrap; }
.hs-page-hero__inner--pic { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: clamp(24px, 3.4vw, 56px); align-items: center; }
.hs-page-hero__pic img { width: 100%; height: auto; border-radius: var(--radius-card); display: block; }

/* 正文排版 */
.hs-prose { font-size: var(--fs-body); line-height: 1.9; color: var(--color-ink); }
.hs-prose > * + * { margin-top: 1.1em; }
.hs-prose h2 { font-size: clamp(20px, 1.9vw, 28px); margin-top: 2em; }
.hs-prose h3 { font-size: clamp(17px, 1.45vw, 21px); margin-top: 1.7em; }
.hs-prose p, .hs-prose li { color: #35352F; }
.hs-prose ul, .hs-prose ol { padding-left: 1.3em; list-style: disc; }
.hs-prose ol { list-style: decimal; }
.hs-prose li { margin: .4em 0; }
.hs-prose img { border-radius: var(--radius-card); }
.hs-prose blockquote { margin: 1.6em 0; padding: 18px 24px; background: var(--color-bg-alt); border-left: 3px solid var(--color-brand); border-radius: 0 8px 8px 0; }
.hs-prose blockquote p { margin: 0; }
.hs-prose table { width: 100%; border-collapse: collapse; font-size: 14px; }
.hs-prose th, .hs-prose td { border-bottom: 1px solid var(--color-line); padding: 12px 10px; text-align: left; }
.hs-prose th { background: var(--color-bg-alt); font-weight: 600; }
.hs-prose a { text-decoration: underline; text-underline-offset: 3px; }

/* 规格表 */
.hs-spec { border: 1px solid var(--color-line); border-radius: var(--radius-card); overflow: hidden; }
.hs-spec__row { display: flex; justify-content: space-between; gap: 24px; padding: 16px 24px; border-bottom: 1px solid var(--color-line); font-size: 14px; }
.hs-spec__row:last-child { border-bottom: 0; }
.hs-spec__row:nth-child(odd) { background: #FBFAF9; }
.hs-spec__k { color: var(--color-ink); font-weight: 500; }
.hs-spec__v { color: var(--color-ink-2); font-family: var(--font-num); text-align: right; }

/* 双栏内容 */
.hs-two-col { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(280px, 1fr); gap: clamp(28px, 4vw, 56px); align-items: start; }

/* 询盘表单 */
.hs-form-card { background: #fff; border: 1px solid var(--color-line); border-radius: var(--radius-card); padding: 28px; position: sticky; top: 96px; }
.hs-form-card h2 { font-size: 22px; margin-bottom: 6px; }
.hs-form-card__sub { font-size: 13px; color: var(--color-ink-2); margin-bottom: 20px; }
.hs-field { display: flex; flex-direction: column; gap: 7px; margin-bottom: 14px; }
.hs-field label { font-size: 13px; font-weight: 500; color: var(--color-ink); }
.hs-field input, .hs-field textarea, .hs-field select {
  width: 100%; padding: 12px 14px; border-radius: 6px; border: 1px solid var(--color-line);
  background: var(--color-bg-alt); font: inherit; font-size: 14px; color: var(--color-ink);
  transition: border-color .15s ease, background .15s ease;
}
.hs-field input:focus, .hs-field textarea:focus, .hs-field select:focus {
  outline: none; border-color: var(--color-brand); background: #fff;
}
.hs-field textarea { min-height: 96px; resize: vertical; }
.hs-form-note { font-size: 11px; color: var(--color-ink-3); line-height: 1.6; margin-top: 12px; }
.hs-form-msg { padding: 12px 14px; border-radius: 6px; font-size: 13px; margin-bottom: 14px; }
.hs-form-msg--ok { background: #EAF7EE; color: #1B6B3A; }
.hs-form-msg--err { background: #FDECEC; color: #A32020; }

/* 文章列表 */
.hs-posts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.hs-post-card { display: flex; flex-direction: column; border: 1px solid var(--color-line); border-radius: var(--radius-card); overflow: hidden; background: #fff; transition: border-color .18s ease, transform .18s ease; }
.hs-post-card:hover { border-color: #cfc9c2; transform: translateY(-2px); }
.hs-post-card__thumb { aspect-ratio: 16 / 9; background: var(--color-bg-alt); overflow: hidden; }
.hs-post-card__thumb img { width: 100%; height: 100%; object-fit: cover; }
.hs-post-card__body { padding: 20px; display: flex; flex-direction: column; gap: 10px; }
.hs-post-card__meta { font-size: var(--fs-xs); color: var(--color-ink-3); display: flex; gap: 10px; }
.hs-post-card__title { font-size: 17px; font-weight: 600; line-height: 1.45; }
.hs-post-card__title a { color: var(--color-ink); }
.hs-post-card__title a:hover { color: var(--color-brand); }
.hs-post-card__excerpt { font-size: 13px; color: var(--color-ink-2); line-height: 1.75; }

/* 分页 */
.hs-pager { display: flex; justify-content: center; gap: 8px; margin-top: 40px; }
.hs-pager .page-numbers { display: inline-flex; min-width: 36px; height: 36px; align-items: center; justify-content: center; padding: 0 12px; border-radius: 6px; border: 1px solid var(--color-line); font-size: 13px; color: var(--color-ink-2); }
.hs-pager .page-numbers.current { background: var(--color-brand); border-color: var(--color-brand); color: #fff; }
.hs-pager .page-numbers:hover { border-color: var(--color-brand); color: var(--color-brand); }

/* ============ 14. 响应式 ============ */
@media (max-width: 1279px) {
  :root { --sidebar: 40px; }
  .hs-biz-grid, .hs-why-grid { grid-template-columns: repeat(2, 1fr); }
  .hs-cases, .hs-posts { grid-template-columns: repeat(2, 1fr); }
  .hs-footer__top { grid-template-columns: 1.4fr 1fr 1fr; gap: 32px; row-gap: 32px; }
  .hs-two-col { grid-template-columns: 1fr; }
  .hs-form-card { position: static; }
}

@media (max-width: 900px) {
  .hs-menu { display: none; }
  .hs-burger { display: block; }
  .hs-nav__tel { display: none; }
  .hs-nav { height: 56px; }
  .hs-nav__right .hs-btn { display: none; }
  .hs-hero h1 { max-width: none; }
  .hs-hero__inner { grid-template-columns: 1fr; gap: 28px; }
  .hs-hero__pic { max-width: 520px; }
  .hs-page-hero__inner--pic { grid-template-columns: 1fr; gap: 24px; }
  .hs-stats { grid-template-columns: repeat(2, 1fr); row-gap: 22px; padding-top: 24px; }
  .hs-stat:nth-child(2n) { padding-right: 0; }
  .hs-head { flex-direction: column; align-items: flex-start; gap: 10px; }
  .hs-head__note { white-space: normal; }
  .hs-cta__btns { width: 100%; flex-direction: column; }
  .hs-cta__btns .hs-btn { width: 100%; }
  .hs-hero__cta { width: 100%; flex-direction: column; }
  .hs-hero__cta .hs-btn { width: 100%; }
  .hs-page-hero__cta { width: 100%; flex-direction: column; }
  .hs-page-hero__cta .hs-btn { width: 100%; }
  .hs-footer__top { grid-template-columns: 1fr 1fr; gap: 28px; }
  .hs-footer__brand { grid-column: 1 / -1; }
  .hs-cases, .hs-posts { grid-template-columns: 1fr; }
  .hs-faq__q { padding: 16px 18px; font-size: 15px; }
  .hs-faq__a { padding: 0 18px 18px; }
  .hs-form-card { padding: 22px; }
}

@media (max-width: 520px) {
  :root { --sidebar: 20px; }
  .hs-biz-grid, .hs-why-grid { grid-template-columns: 1fr; }
  .hs-case__num { font-size: 26px; }
  .hs-spec__row { flex-direction: column; gap: 4px; padding: 14px 18px; }
  .hs-spec__v { text-align: left; }
}

/* 打印与无障碍 */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}
.skip-link { position: absolute; left: -9999px; top: 0; background: #fff; padding: 10px 16px; z-index: 100; border-radius: 0 0 6px 0; }
.skip-link:focus { left: 0; }