/* ==========================================================================
   领头羊商业咨询 · 工作室主页
   纯静态 CSS，无第三方依赖
   断点： 默认（移动优先） / 640px / 900px / 1200px
   ========================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root {
  /* 颜色 */
  --ink-900: #0b1f33;
  --ink-800: #0f2b46;
  --ink-700: #1c3f60;
  --ink-500: #4a6478;
  --ink-400: #6b8194;
  --ink-200: #cdd8e2;
  --ink-100: #e5ecf2;
  --ink-50:  #f5f8fa;

  --gold-600: #b8822a;
  --gold-500: #d0982f;
  --gold-400: #e0a63c;
  --gold-100: #fbf2df;

  --white: #ffffff;
  --line: #e2e9ef;

  /* 语义色 */
  --brand: var(--ink-800);
  --accent: var(--gold-400);
  --text: #16293c;
  --text-soft: var(--ink-500);
  --bg: var(--white);
  --bg-alt: var(--ink-50);

  /* 排版 */
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
               "Source Han Sans SC", "Noto Sans SC", system-ui, -apple-system, sans-serif;
  --font-serif: "Songti SC", "SimSun", Georgia, serif;

  /* 尺寸 */
  --container: 1160px;
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 20px;
  --header-h: 70px;

  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(11, 31, 51, .05);
  --shadow: 0 6px 24px -8px rgba(11, 31, 51, .12);
  --shadow-lg: 0 18px 48px -16px rgba(11, 31, 51, .20);

  /* 动效 */
  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ---------- 2. 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 12px);
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  margin: 0 0 .6em;
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--ink-900);
}

h1 { font-size: clamp(2rem, 6vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3.6vw, 2.25rem); }
h3 { font-size: 1.125rem; }

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

a { color: var(--ink-700); text-decoration: none; transition: color .2s var(--ease); }
a:hover { color: var(--gold-600); }

ul, ol { margin: 0; padding: 0; list-style: none; }

img, svg { max-width: 100%; display: block; }

strong { color: var(--ink-900); font-weight: 600; }

/* 焦点可见（无障碍） */
:focus-visible {
  outline: 3px solid var(--gold-400);
  outline-offset: 2px;
  border-radius: 4px;
}

/* 跳到主要内容 */
.skip-link {
  position: absolute;
  top: -100px;
  left: 12px;
  z-index: 999;
  padding: 10px 18px;
  background: var(--ink-800);
  color: var(--white);
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  transition: top .2s var(--ease);
}
.skip-link:focus { top: 0; color: var(--white); }

/* ---------- 3. 布局工具 ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 20px;
}
.container-narrow { max-width: 780px; }

.section { padding: 64px 0; }
.section-alt { background: var(--bg-alt); }

.section-head { margin-bottom: 40px; max-width: 720px; }
.section-desc { color: var(--text-soft); font-size: 1.0625rem; }

.eyebrow {
  display: inline-block;
  margin: 0 0 12px;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--gold-600);
}

.hl {
  color: var(--gold-600);
  background-image: linear-gradient(transparent 62%, var(--gold-100) 62%);
}

/* ---------- 4. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;              /* 移动端触控友好 */
  padding: 12px 26px;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1;
  border: 1.5px solid transparent;
  border-radius: 999px;
  cursor: pointer;
  transition: transform .18s var(--ease), background-color .2s var(--ease),
              box-shadow .2s var(--ease), color .2s var(--ease);
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--ink-800);
  color: var(--white);
  box-shadow: var(--shadow);
}
.btn-primary:hover {
  background: var(--ink-700);
  color: var(--white);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.btn-ghost {
  background: transparent;
  color: var(--ink-800);
  border-color: var(--ink-200);
}
.btn-ghost:hover {
  border-color: var(--ink-800);
  color: var(--ink-800);
  background: var(--ink-50);
}

.btn-block { width: 100%; }

/* ---------- 5. 顶部导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .82);
  backdrop-filter: saturate(160%) blur(12px);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s var(--ease), box-shadow .25s var(--ease);
}
.site-header.is-scrolled {
  border-bottom-color: var(--line);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: var(--header-h);
}

.brand { display: flex; align-items: center; gap: 10px; color: var(--ink-900); }
.brand-mark { flex: 0 0 auto; line-height: 0; }
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text strong { font-size: .98rem; letter-spacing: .01em; }
.brand-text small {
  font-size: .58rem;
  letter-spacing: .12em;
  color: var(--ink-400);
}

/* 汉堡按钮 */
.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0 10px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 10px;
  cursor: pointer;
}
.nav-toggle-bar {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--ink-800);
  border-radius: 2px;
  transition: transform .25s var(--ease), opacity .2s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 移动端导航面板 */
.primary-nav {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--white);
  border-bottom: 1px solid var(--line);
  box-shadow: var(--shadow);
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .3s var(--ease), visibility .3s;
  visibility: hidden;
  overflow: hidden;
}
.primary-nav.is-open { grid-template-rows: 1fr; visibility: visible; }
.primary-nav ul {
  display: flex;
  flex-direction: column;
  min-height: 0;
  padding: 8px 20px 20px;
}
.primary-nav a {
  display: block;
  padding: 13px 4px;
  font-weight: 500;
  border-bottom: 1px solid var(--ink-50);
}
.nav-cta {
  margin-top: 12px;
  text-align: center;
  background: var(--ink-800);
  color: var(--white) !important;
  border-bottom: none !important;
  border-radius: 999px;
}
.nav-cta:hover { background: var(--ink-700); }

/* ---------- 6. 首屏 ---------- */
.hero {
  position: relative;
  padding: 56px 0 64px;
  background: linear-gradient(180deg, var(--ink-50) 0%, var(--white) 100%);
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(680px 340px at 88% -10%, rgba(224, 166, 60, .16), transparent 70%),
    radial-gradient(520px 320px at 6% 100%, rgba(15, 43, 70, .07), transparent 70%);
}
.hero-inner { position: relative; }

.hero-copy { max-width: 760px; }
.hero h1 { margin-bottom: 20px; }
.lead {
  font-size: 1.0625rem;
  color: var(--text-soft);
  max-width: 620px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 28px 0 36px;
}
.hero-actions .btn { flex: 1 1 auto; min-width: 180px; }

.hero-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--line);
  padding-top: 24px;
}
.hero-stats li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--line);
}
.hero-stats li:last-child { border-bottom: none; }
.hero-stats b {
  flex: 0 0 auto;
  min-width: 92px;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--ink-800);
  letter-spacing: -.02em;
}
.hero-stats span { font-size: .9375rem; color: var(--text-soft); }

/* ---------- 7. 卡片网格 ---------- */
.grid { display: grid; gap: 20px; }
.grid-3 { grid-template-columns: 1fr; }

.card {
  padding: 28px 24px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: transform .25s var(--ease), box-shadow .25s var(--ease),
              border-color .25s var(--ease);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--ink-200);
}
.card h3 { margin-top: 16px; }
.card p { color: var(--text-soft); font-size: .9375rem; }

.card-icon {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--ink-50);
  color: var(--ink-700);
  border: 1px solid var(--line);
}

.card-list { margin-top: 16px; padding-top: 16px; border-top: 1px dashed var(--line); }
.card-list li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 7px;
  font-size: .875rem;
  color: var(--ink-500);
}
.card-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: .62em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold-400);
}

/* ---------- 8. 方法步骤 ---------- */
.steps { display: grid; gap: 16px; counter-reset: step; }

.step {
  display: flex;
  gap: 18px;
  padding: 24px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: box-shadow .25s var(--ease), transform .25s var(--ease);
}
.step:hover { box-shadow: var(--shadow); transform: translateY(-2px); }

.step-num {
  flex: 0 0 auto;
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  color: var(--gold-400);
  padding-top: 4px;
}
.step-body h3 { margin-bottom: .35em; }
.step-body p { color: var(--text-soft); font-size: .9375rem; margin-bottom: 10px; }
.step-out {
  display: inline-block;
  padding: 4px 12px;
  font-size: .75rem;
  font-weight: 600;
  color: var(--ink-700);
  background: var(--ink-50);
  border: 1px solid var(--line);
  border-radius: 999px;
}

/* ---------- 9. 案例 ---------- */
.case {
  display: flex;
  flex-direction: column;
  padding: 26px 24px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: transform .25s var(--ease), box-shadow .25s var(--ease);
}
.case:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }

.tag {
  align-self: flex-start;
  margin-bottom: 14px;
  padding: 4px 12px;
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .05em;
  color: var(--gold-600);
  background: var(--gold-100);
  border-radius: 999px;
}
.case h3 { font-size: 1.0625rem; }
.case p { color: var(--text-soft); font-size: .9375rem; }

.case-meta {
  margin: auto 0 0;
  padding-top: 18px;
  margin-top: 18px;
  border-top: 1px dashed var(--line);
  display: grid;
  gap: 6px;
  font-size: .8125rem;
}
.case-meta > div { display: flex; gap: 10px; }
.case-meta dt { color: var(--ink-400); min-width: 56px; }
.case-meta dd { margin: 0; color: var(--ink-700); font-weight: 600; }

/* ---------- 10. 关于 ---------- */
.about-grid { display: grid; gap: 32px; }
.about-main p { color: var(--text-soft); font-size: 1.0625rem; }

.about-main blockquote {
  margin: 26px 0 0;
  padding: 16px 0 16px 22px;
  border-left: 3px solid var(--gold-400);
  font-family: var(--font-serif);
  font-size: 1.125rem;
  color: var(--ink-800);
}

.about-side {
  padding: 26px 24px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  align-self: start;
}
.about-side h3 { font-size: .9375rem; letter-spacing: .04em; color: var(--ink-500); }

.info-list li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--line);
  font-size: .875rem;
}
.info-list li:last-child { border-bottom: none; }
.info-list span { color: var(--ink-400); flex: 0 0 auto; }
.info-list b { color: var(--ink-800); text-align: right; }

.side-note {
  margin-top: 16px;
  padding: 12px 14px;
  font-size: .8125rem;
  color: var(--ink-500);
  background: var(--ink-50);
  border-radius: var(--radius-sm);
}

/* ---------- 11. FAQ ---------- */
.faq-list { display: grid; gap: 10px; }

.faq {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color .2s var(--ease);
}
.faq[open] { border-color: var(--ink-200); box-shadow: var(--shadow-sm); }

.faq summary {
  position: relative;
  padding: 18px 52px 18px 22px;
  font-weight: 600;
  color: var(--ink-900);
  cursor: pointer;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "";
  position: absolute;
  right: 22px;
  top: 50%;
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--gold-500);
  border-bottom: 2px solid var(--gold-500);
  transform: translateY(-70%) rotate(45deg);
  transition: transform .25s var(--ease);
}
.faq[open] summary::after { transform: translateY(-30%) rotate(-135deg); }

.faq p {
  padding: 0 22px 20px;
  margin: 0;
  color: var(--text-soft);
  font-size: .9375rem;
}

/* ---------- 12. 联系 ---------- */
.section-contact { background: var(--ink-900); }
.section-contact .eyebrow { color: var(--gold-400); }
.section-contact h2 { color: var(--white); }
.contact-grid { display: grid; gap: 32px; }
.contact-copy > p { color: rgba(255, 255, 255, .72); font-size: 1.0625rem; }

.contact-points { margin-top: 24px; display: grid; gap: 12px; }
.contact-points li {
  position: relative;
  padding-left: 26px;
  font-size: .9375rem;
  color: rgba(255, 255, 255, .78);
}
.contact-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .55em;
  width: 14px;
  height: 8px;
  border-left: 2px solid var(--gold-400);
  border-bottom: 2px solid var(--gold-400);
  transform: rotate(-45deg);
}
.contact-points b { color: var(--white); }

/* 表单 */
.contact-form {
  padding: 26px 22px;
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}
.field { margin-bottom: 16px; }

.field label {
  display: block;
  margin-bottom: 6px;
  font-size: .875rem;
  font-weight: 600;
  color: var(--ink-800);
}
.field label span { color: var(--gold-600); }

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 12px 14px;
  font-family: inherit;
  font-size: 1rem;          /* ≥16px 防止 iOS 聚焦缩放 */
  color: var(--text);
  background: var(--white);
  border: 1.5px solid var(--ink-200);
  border-radius: 10px;
  transition: border-color .18s var(--ease), box-shadow .18s var(--ease);
  -webkit-appearance: none;
  appearance: none;
}
.field select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='9' viewBox='0 0 14 9'%3E%3Cpath d='M1 1l6 6 6-6' stroke='%234a6478' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 38px;
}
.field textarea { resize: vertical; min-height: 120px; }

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--gold-400);
  box-shadow: 0 0 0 4px rgba(224, 166, 60, .16);
}

.field.has-error input,
.field.has-error textarea { border-color: #c0392b; }

.field-error {
  margin: 5px 0 0;
  font-size: .8125rem;
  color: #c0392b;
  min-height: 0;
}
.field-error:empty { display: none; }

.form-status {
  margin: 14px 0 0;
  font-size: .875rem;
  font-weight: 600;
  text-align: center;
  min-height: 22px;
}
.form-status.is-success { color: #1e7d4f; }
.form-status.is-error { color: #c0392b; }

.form-note {
  margin-top: 10px;
  font-size: .75rem;
  line-height: 1.6;
  color: var(--ink-400);
  text-align: center;
}

/* ---------- 13. 页脚 ---------- */
.site-footer {
  padding: 40px 0 32px;
  background: #08192a;
  color: rgba(255, 255, 255, .6);
  font-size: .875rem;
}
.footer-inner { display: grid; gap: 24px; }
.footer-brand strong { display: block; font-size: 1rem; color: var(--white); margin-bottom: 4px; }
.footer-brand p { margin: 0; }

.footer-nav { display: flex; flex-wrap: wrap; gap: 8px 20px; }
.footer-nav a { color: rgba(255, 255, 255, .62); }
.footer-nav a:hover { color: var(--gold-400); }

.footer-meta p { margin: 0; font-size: .8125rem; }
.footer-meta p + p { margin-top: 4px; }

/* ---------- 14. 回到顶部 ---------- */
.back-top {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 90;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  color: var(--white);
  background: var(--ink-800);
  border: none;
  border-radius: 50%;
  box-shadow: var(--shadow-lg);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity .25s var(--ease), transform .25s var(--ease), visibility .25s;
}
.back-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-top:hover { background: var(--ink-700); }

/* ---------- 15. 滚动入场动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .6s var(--ease), transform .6s var(--ease);
  will-change: opacity, transform;
}
.reveal.is-in { opacity: 1; transform: none; }

/* ---------- 16. 响应式 ---------- */

/* 手机横屏 / 小平板 */
@media (min-width: 640px) {
  .section { padding: 80px 0; }
  .hero { padding: 72px 0 84px; }

  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .hero-stats { grid-template-columns: repeat(3, 1fr); gap: 0 20px; }
  .hero-stats li {
    flex-direction: column;
    align-items: flex-start;
    border-bottom: none;
    border-right: 1px solid var(--line);
    padding-right: 20px;
  }
  .hero-stats li:last-child { border-right: none; }
  .hero-stats b { min-width: 0; margin-bottom: 4px; }

  .hero-actions .btn { flex: 0 0 auto; }

  .footer-inner { grid-template-columns: 1fr auto; align-items: start; }
  .footer-meta { grid-column: 1 / -1; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.1); }
}

/* 平板 / 桌面：启用横向导航 */
@media (min-width: 900px) {
  .container { padding-inline: 32px; }

  .nav-toggle { display: none; }
  .primary-nav {
    position: static;
    display: block;
    background: transparent;
    border: none;
    box-shadow: none;
    visibility: visible;
    overflow: visible;
  }
  .primary-nav ul {
    flex-direction: row;
    align-items: center;
    gap: 4px;
    padding: 0;
  }
  .primary-nav a {
    padding: 8px 14px;
    border-bottom: none;
    border-radius: 8px;
    font-size: .9375rem;
  }
  .primary-nav a:not(.nav-cta):hover { background: var(--ink-50); }
  .nav-cta { margin-top: 0; padding: 10px 20px !important; }

  .grid-3 { grid-template-columns: repeat(3, 1fr); gap: 24px; }

  .steps { grid-template-columns: repeat(2, 1fr); gap: 20px; }

  .about-grid { grid-template-columns: 1.55fr 1fr; gap: 48px; }

  .contact-grid { grid-template-columns: 1fr 1.05fr; gap: 56px; align-items: start; }

  .footer-inner { grid-template-columns: 1.4fr 1fr 1fr; }
  .footer-meta { grid-column: auto; padding-top: 0; border-top: none; text-align: right; }

  .back-top { right: 28px; bottom: 28px; width: 50px; height: 50px; }
}

/* 大屏 */
@media (min-width: 1200px) {
  .section { padding: 104px 0; }
  .hero { padding: 88px 0 104px; }
  .section-head { margin-bottom: 56px; }
  .card { padding: 34px 30px; }
  .contact-form { padding: 34px 32px; }
}

/* ---------- 17. 无障碍与偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}

@media (prefers-contrast: more) {
  :root { --text-soft: #3d5468; --line: #b9c6d2; }
}

@media print {
  .site-header, .back-top, .contact-form, .skip-link { display: none !important; }
  body { color: #000; background: #fff; }
  .section { padding: 20px 0; page-break-inside: avoid; }
  .section-contact { background: #fff; }
  .section-contact h2, .contact-copy > p { color: #000; }
  .reveal { opacity: 1 !important; transform: none !important; }
  a::after { content: " (" attr(href) ")"; font-size: .75em; color: #555; }
  .footer-icp a::after { content: none; }
}

/* ---------- 18. 表单蜜罐：肉眼不可见，但不给 display:none（挡不住部分机器人） ---------- */
.hp-field {
  position: absolute !important;
  left: -9999px !important;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
}

/* ---------- 19. 页脚备案号 ---------- */
.footer-icp { margin-top: 8px; }
.footer-icp a {
  color: inherit;
  opacity: .72;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  transition: opacity .2s ease;
}
.footer-icp a:hover,
.footer-icp a:focus-visible { opacity: 1; }
.footer-icp a:focus-visible { outline: 2px solid currentColor; outline-offset: 3px; }