/* ==========================================================
   柳州云星广告官网 · 设计系统
   还原自 Ardot 设计稿（fileId 736088179855780）
   品牌橙 #FF6600 + 深灰 #1F1F1F 体系
   ========================================================== */

/* ---------- 设计令牌 ---------- */
:root {
  --brand: #FF6600;
  --brand-dark: #E65C00;
  --dark: #1F1F1F;
  --title: #1F1F1F;
  --body: #666666;
  --body-light: #999999;
  --bg-light: #F7F7F7;
  --border: #ECECEC;
  --badge-bg: #FFF1E6;
  --cta-sub: #FFE3CC;
  --hero-sub: #BBBBBB;
  --hero-label: #999999;
  --white: #FFFFFF;
  --max-w: 1200px;
  --radius-s: 6px;
  --radius-m: 8px;
  --radius-l: 12px;
  --radius-xl: 16px;
  --shadow-card: 0 1px 3px rgba(31, 31, 31, 0.06);
  --shadow-hover: 0 8px 24px rgba(31, 31, 31, 0.10);
  --font: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.7;
  color: var(--body);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea, select { font-family: inherit; font-size: inherit; }

/* ---------- 布局工具 ---------- */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section--light { background: var(--bg-light); }
.section--dark { background: var(--dark); }

/* ---------- 区块标题组 ---------- */
.sec-head { display: flex; flex-direction: column; gap: 8px; margin-bottom: 48px; }
.sec-head--center { align-items: center; text-align: center; }
.sec-eyebrow {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--brand);
  text-transform: uppercase;
}
.sec-title { font-size: 32px; font-weight: 700; color: var(--title); line-height: 1.35; }
.sec-desc { font-size: 15px; color: var(--body); max-width: 640px; }
.sec-head--row {
  flex-direction: row;
  align-items: flex-end;
  justify-content: space-between;
}
.sec-head--row .sec-head-text { display: flex; flex-direction: column; gap: 8px; }

/* ---------- 按钮系统 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 28px;
  border-radius: var(--radius-m);
  font-size: 15px;
  font-weight: 500;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--brand); color: var(--white); }
.btn--primary:hover { background: var(--brand-dark); box-shadow: 0 6px 16px rgba(255, 102, 0, 0.28); }
.btn--dark { background: var(--dark); color: var(--white); }
.btn--dark:hover { background: #333; }
.btn--ghost { border: 1px solid rgba(255, 255, 255, 0.35); color: var(--white); }
.btn--ghost:hover { border-color: var(--brand); color: var(--brand); }
.btn--outline-brand { border: 1px solid var(--brand); color: var(--brand); background: transparent; }
.btn--outline-brand:hover { background: var(--brand); color: var(--white); }
.btn--sm { height: 40px; padding: 0 20px; font-size: 14px; }
.btn--lg { height: 54px; padding: 0 36px; font-size: 16px; font-weight: 700; }
.btn--block { width: 100%; }

/* ---------- 页头导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--white);
  border-bottom: 1px solid var(--border);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.nav__logo { display: flex; align-items: center; gap: 10px; }
.nav__logo-mark {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-m);
  background: var(--brand);
  color: var(--white);
  font-size: 17px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.nav__logo-text { display: flex; flex-direction: column; line-height: 1.25; }
.nav__logo-name { font-size: 17px; font-weight: 700; color: var(--title); }
.nav__logo-sub { font-size: 10px; color: var(--body-light); letter-spacing: 0.08em; }
.nav__links { display: flex; align-items: center; gap: 30px; }
.nav__link {
  font-size: 14px;
  font-weight: 500;
  color: var(--title);
  position: relative;
  padding: 4px 0;
  transition: color 0.15s ease;
}
.nav__link:hover, .nav__link.is-active { color: var(--brand); }
.nav__link.is-active::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -2px;
  transform: translateX(-50%);
  width: 16px;
  height: 2px;
  border-radius: 2px;
  background: var(--brand);
}
.nav__right { display: flex; align-items: center; gap: 16px; }
.nav__tel { display: flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 700; color: var(--title); }
.nav__tel:hover { color: var(--brand); }
.nav__burger { display: none; flex-direction: column; justify-content: center; gap: 5px; width: 40px; height: 40px; border-radius: var(--radius-m); background: var(--bg-light); align-items: center; }
.nav__burger span { display: block; width: 18px; height: 2px; border-radius: 2px; background: var(--dark); transition: 0.2s; }
.nav__burger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__burger.is-open span:nth-child(2) { opacity: 0; }
.nav__burger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.mobile-menu {
  display: none;
  position: fixed;
  inset: 72px 0 0 0;
  background: var(--white);
  z-index: 99;
  padding: 24px;
  overflow-y: auto;
}
.mobile-menu.is-open { display: block; }
.mobile-menu__links { display: flex; flex-direction: column; }
.mobile-menu__links a {
  padding: 16px 4px;
  font-size: 17px;
  font-weight: 500;
  color: var(--title);
  border-bottom: 1px solid var(--border);
}
.mobile-menu__links a:last-child { border-bottom: none; }
.mobile-menu__cta { margin-top: 24px; display: flex; flex-direction: column; gap: 12px; }

/* ---------- Hero 首屏（深灰） ---------- */
.hero {
  position: relative;
  background: var(--dark);
  overflow: hidden;
  padding: 88px 0 96px;
}
.hero__arc {
  position: absolute;
  right: -160px;
  top: -180px;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  border: 90px solid rgba(255, 102, 0, 0.07);
  pointer-events: none;
}
.hero__arc--2 {
  right: auto;
  left: -220px;
  top: auto;
  bottom: -260px;
  border-color: rgba(255, 102, 0, 0.05);
}
.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.hero__badge {
  display: inline-flex;
  align-items: center;
  height: 32px;
  padding: 0 14px;
  border-radius: 100px;
  background: var(--brand);
  color: var(--white);
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 24px;
}
.hero__title {
  font-size: 46px;
  font-weight: 700;
  color: var(--white);
  line-height: 1.28;
  margin-bottom: 20px;
}
.hero__sub {
  font-size: 16px;
  color: var(--hero-sub);
  max-width: 520px;
  margin-bottom: 32px;
}
.hero__actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 44px; }
.hero__stats { display: flex; gap: 48px; }
.hero__stat { display: flex; flex-direction: column; gap: 2px; }
.hero__stat-num { font-size: 30px; font-weight: 700; color: var(--brand); line-height: 1.2; }
.hero__stat-label { font-size: 13px; color: var(--hero-label); }
.hero__text { position: relative; z-index: 1; }
.hero__media { position: relative; }
.hero__img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  border-radius: var(--radius-l);
}
.hero__img-tag {
  position: absolute;
  left: 20px;
  bottom: 20px;
  display: inline-flex;
  align-items: center;
  height: 36px;
  padding: 0 16px;
  border-radius: var(--radius-s);
  background: var(--brand);
  color: var(--white);
  font-size: 13px;
  font-weight: 500;
}

/* ---------- 信任条 ---------- */
.trust-bar { background: var(--white); border-bottom: 1px solid var(--border); }
.trust-bar__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.trust-bar__item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 28px 32px;
  border-right: 1px solid var(--border);
}
.trust-bar__item:last-child { border-right: none; }
.trust-bar__num { font-size: 24px; font-weight: 700; color: var(--brand); line-height: 1.3; }
.trust-bar__label { font-size: 13px; color: var(--body); }

/* ---------- 服务卡 ---------- */
.svc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.svc-card {
  display: flex;
  flex-direction: column;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-l);
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.svc-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.svc-card__img { width: 100%; height: 200px; object-fit: cover; }
.svc-card__body { display: flex; flex-direction: column; gap: 10px; padding: 24px; flex: 1; }
.svc-card__title { font-size: 19px; font-weight: 700; color: var(--title); }
.svc-card__desc { font-size: 14px; color: var(--body); flex: 1; }
.svc-card__link { font-size: 14px; font-weight: 500; color: var(--brand); }
.svc-card__link:hover { text-decoration: underline; }

/* ---------- 案例卡 ---------- */
.case-filters { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 32px; }
.case-filter {
  display: inline-flex;
  align-items: center;
  height: 36px;
  padding: 0 18px;
  border-radius: 100px;
  background: var(--white);
  border: 1px solid var(--border);
  font-size: 14px;
  color: var(--body);
  transition: 0.15s ease;
}
.case-filter:hover { border-color: var(--brand); color: var(--brand); }
.case-filter.is-active { background: var(--brand); border-color: var(--brand); color: var(--white); }
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-card {
  display: flex;
  flex-direction: column;
  background: var(--white);
  border-radius: var(--radius-l);
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.case-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.case-card__img { width: 100%; height: 220px; object-fit: cover; }
.case-card__body { display: flex; flex-direction: column; gap: 8px; padding: 20px 24px 24px; }
.case-card__badge {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 10px;
  border-radius: 4px;
  background: var(--badge-bg);
  color: var(--brand);
  font-size: 12px;
  font-weight: 500;
}
.case-card__title { font-size: 17px; font-weight: 700; color: var(--title); }
.case-card__desc { font-size: 13px; color: var(--body); }

/* ---------- 服务流程 ---------- */
.flow-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; }
.flow-step {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 28px 24px;
  background: var(--bg-light);
  border-radius: var(--radius-l);
  position: relative;
}
.flow-step__num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--brand);
  color: var(--white);
  font-size: 17px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 6px;
}
.flow-step__title { font-size: 17px; font-weight: 700; color: var(--title); }
.flow-step__desc { font-size: 13px; color: var(--body); }

/* ---------- 关于摘要 ---------- */
.about-brief { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.about-brief__img { width: 100%; height: 400px; object-fit: cover; border-radius: var(--radius-l); }
.about-brief__body { display: flex; flex-direction: column; gap: 16px; align-items: flex-start; }
.about-brief__title { font-size: 28px; font-weight: 700; color: var(--title); line-height: 1.4; }
.about-brief__desc { font-size: 15px; color: var(--body); }
.about-brief__list { display: flex; flex-direction: column; gap: 12px; margin-top: 8px; }
.about-brief__list li { display: flex; gap: 12px; align-items: flex-start; font-size: 15px; color: var(--title); }
.about-brief__dot {
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--brand);
  margin-top: 9px;
}

/* ---------- 新闻卡 ---------- */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card {
  display: flex;
  flex-direction: column;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-l);
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.news-card__img { width: 100%; height: 200px; object-fit: cover; }
.news-card__body { display: flex; flex-direction: column; gap: 8px; padding: 24px; }
.news-card__meta { display: flex; gap: 16px; align-items: center; }
.news-card__date { font-size: 13px; font-weight: 500; color: var(--brand); }
.news-card__cat { font-size: 13px; color: var(--body-light); }
.news-card__title { font-size: 17px; font-weight: 700; color: var(--title); line-height: 1.5; }
.news-card:hover .news-card__title { color: var(--brand); }
.news-card__desc { font-size: 13px; color: var(--body); }

/* ---------- CTA 通栏 ---------- */
.cta-banner {
  background: var(--brand);
  padding: 64px 0;
  text-align: center;
}
.cta-banner__title { font-size: 30px; font-weight: 700; color: var(--white); margin-bottom: 12px; }
.cta-banner__desc { font-size: 15px; color: var(--cta-sub); margin-bottom: 28px; }
.cta-banner__actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.cta-banner .btn--white { background: var(--white); color: var(--brand); font-weight: 700; }
.cta-banner .btn--white:hover { background: #FFF1E6; }
.cta-banner .btn--darkline { border: 1px solid rgba(255, 255, 255, 0.6); color: var(--white); }
.cta-banner .btn--darkline:hover { background: rgba(255, 255, 255, 0.12); }

/* ---------- 内页 Banner ---------- */
.page-banner {
  background: var(--dark);
  padding: 72px 0;
  text-align: center;
}
.breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--hero-label);
  margin-bottom: 18px;
}
.breadcrumb a:hover { color: var(--brand); }
.breadcrumb .sep { opacity: 0.5; }
.breadcrumb .current { color: var(--brand); }
.page-banner__title { font-size: 40px; font-weight: 700; color: var(--white); margin-bottom: 14px; }
.page-banner__desc { font-size: 16px; color: var(--hero-sub); max-width: 680px; margin: 0 auto; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--dark); color: var(--cta-sub); padding: 64px 0 0; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.10);
}
.footer-brand { display: flex; flex-direction: column; gap: 16px; }
.footer-brand__logo { display: flex; align-items: center; gap: 10px; }
.footer-brand__mark {
  width: 36px; height: 36px; border-radius: var(--radius-m);
  background: var(--brand); color: var(--white);
  display: flex; align-items: center; justify-content: center;
  font-size: 17px; font-weight: 700;
}
.footer-brand__name { font-size: 17px; font-weight: 700; color: var(--white); }
.footer-brand__desc { font-size: 13px; line-height: 1.8; }
.footer-brand__disclaimer {
  font-size: 12px; color: var(--hero-label); line-height: 1.7;
  padding: 12px 14px; border: 1px dashed rgba(255, 255, 255, 0.18); border-radius: var(--radius-s);
}
.footer-col__title { font-size: 15px; font-weight: 700; color: var(--white); margin-bottom: 18px; }
.footer-col ul { display: flex; flex-direction: column; gap: 12px; }
.footer-col a, .footer-col li { font-size: 14px; transition: color 0.15s ease; }
.footer-col a:hover { color: var(--brand); }
.footer-contact li { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; line-height: 1.7; }
.footer-contact .ico { color: var(--brand); flex: none; }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 24px 0;
  font-size: 13px;
  color: var(--hero-label);
}
.footer-bottom a:hover { color: var(--brand); }

/* ---------- 表单 ---------- */
.form-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 40px;
}
.form-card__title { font-size: 24px; font-weight: 700; color: var(--title); margin-bottom: 6px; }
.form-card__desc { font-size: 14px; color: var(--body); margin-bottom: 28px; }
.form-field { display: flex; flex-direction: column; gap: 8px; margin-bottom: 20px; }
.form-label { font-size: 13px; font-weight: 500; color: var(--body); }
.form-input, .form-select, .form-textarea {
  width: 100%;
  background: var(--bg-light);
  border: 1px solid transparent;
  border-radius: var(--radius-m);
  padding: 12px 16px;
  font-size: 14px;
  color: var(--title);
  transition: border-color 0.15s ease, background 0.15s ease;
}
.form-input::placeholder, .form-textarea::placeholder { color: var(--body-light); }
.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--brand);
  background: var(--white);
}
.form-textarea { min-height: 110px; resize: vertical; }
.form-note { font-size: 12px; color: var(--body-light); margin-top: 14px; }

/* 蜜罐字段：移出视口，真人与屏幕阅读器不可见，仅用于拦截自动提交机器人 */
.hp-field {
  position: absolute !important;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
}

/* 表单提交状态提示 */
.form-status { font-size: 13px; margin-top: 12px; min-height: 18px; }
.form-status.is-ok { color: #1a9e4b; }
.form-status.is-error { color: #d94343; }

/* ---------- 管理后台 ---------- */
.admin-body { background: #f4f5f7; }
.admin-shell { display: flex; min-height: 100vh; }
.admin-side { width: 220px; background: var(--dark); color: #fff; padding: 20px 0; flex-shrink: 0; }
.admin-side__brand { font-weight: 700; padding: 0 20px 18px; border-bottom: 1px solid rgba(255,255,255,.12); margin-bottom: 12px; }
.admin-side nav { display: flex; flex-direction: column; }
.admin-side nav a { color: #cfcfcf; padding: 11px 20px; text-decoration: none; font-size: 14px; }
.admin-side nav a:hover { background: rgba(255,255,255,.08); color: #fff; }
.admin-logout-form { margin: 0; }
.admin-logout { width: 100%; text-align: left; background: none; border: none; color: #cfcfcf; padding: 11px 20px; font-size: 14px; cursor: pointer; }
.admin-logout:hover { background: rgba(255,255,255,.08); color: #fff; }
.admin-main { flex: 1; padding: 32px; }
/* 后台页面标题：原 .page-banner__title 是前台深色 banner 用的白字，后台为白底会导致顶部文字看不见；此处作用域覆盖为深色并加间距 */
.admin-main .page-banner__title { color: var(--title); margin-bottom: 20px; }
.admin-main .form-card__title { color: var(--title); }
.admin-cards { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 20px; }
.admin-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-m); padding: 20px 24px; min-width: 140px; display: flex; flex-direction: column; gap: 6px; }
.admin-card__num { font-size: 28px; font-weight: 700; color: var(--brand); }
.admin-card__label { font-size: 13px; color: var(--body); }
.admin-hint { margin-top: 24px; color: var(--body-light); font-size: 13px; }

/* 后台表格 */
.admin-table { width: 100%; border-collapse: collapse; background: #fff; border-radius: var(--radius-m, 8px); overflow: hidden; box-shadow: 0 1px 3px rgba(0,0,0,.06); margin-top: 16px; }
.admin-table th, .admin-table td { padding: 11px 14px; text-align: left; border-bottom: 1px solid var(--border, #e6e6e6); font-size: 13px; vertical-align: middle; }
.admin-table th { background: #fafafa; color: var(--body, #555); font-weight: 600; }
.admin-table tr:hover td { background: #fcfcfc; }
.admin-thumb { width: 64px; height: 44px; object-fit: cover; border-radius: 4px; background: #eee; }
.admin-row-actions { display: flex; gap: 10px; align-items: center; white-space: nowrap; }
.admin-row-actions a { color: var(--brand, #ff6600); text-decoration: none; }
.admin-inline-form { display: inline; margin: 0; }
.admin-link, .admin-link-danger { background: none; border: none; padding: 0; font-size: 13px; cursor: pointer; font-family: inherit; }
.admin-link { color: var(--brand, #ff6600); }
.admin-link-danger { color: #d94343; }
.admin-link-danger:hover, .admin-link:hover { text-decoration: underline; }
.admin-cell-clamp { max-width: 280px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.admin-unread { background: #fff8f0; }
.admin-unread td:first-child { font-weight: 700; color: var(--brand, #ff6600); }

/* 后台工具栏与表单 */
.admin-toolbar { margin-top: 16px; }
.admin-form { background: #fff; border: 1px solid var(--border, #e6e6e6); border-radius: var(--radius-m, 8px); padding: 24px; margin-top: 16px; max-width: 860px; }
.admin-form__row { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.admin-form__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.admin-form__grid .admin-form__row { margin-bottom: 16px; }
.admin-form__row label { font-size: 13px; color: var(--body, #555); font-weight: 600; }
.admin-input, .admin-textarea { width: 100%; padding: 9px 12px; border: 1px solid var(--border, #e6e6e6); border-radius: 6px; font-size: 14px; font-family: inherit; color: var(--dark, #1f1f1f); background: #fff; }
.admin-input:focus, .admin-textarea:focus { outline: none; border-color: var(--brand, #ff6600); box-shadow: 0 0 0 3px rgba(255,102,0,.12); }
.admin-textarea { resize: vertical; line-height: 1.6; }
.admin-form__row--check { flex-direction: row; align-items: center; gap: 8px; }
.admin-form__row--check label { font-weight: 400; }
.admin-form__hint { font-size: 12px; color: var(--body-light, #999); margin: 2px 0 0; }
.admin-form__actions { display: flex; gap: 12px; margin-top: 8px; }

/* 后台按钮在白底容器内的适配 */
.admin-main .btn--ghost { color: var(--dark, #1f1f1f); border-color: var(--border, #e6e6e6); }
.admin-main .btn--ghost:hover { color: var(--brand, #ff6600); border-color: var(--brand, #ff6600); }
.btn--danger { background: #d94343; color: #fff; border: 1px solid #d94343; }
.btn--danger:hover { background: #c23a3a; border-color: #c23a3a; }

/* 留言详情 */
.admin-detail { background: #fff; border: 1px solid var(--border, #e6e6e6); border-radius: var(--radius-m, 8px); padding: 20px 24px; margin-top: 16px; max-width: 720px; }
.admin-detail p { margin: 8px 0; font-size: 14px; color: var(--dark, #1f1f1f); }
.admin-detail p span { color: var(--body-light, #999); display: inline-block; min-width: 88px; }
.admin-detail__msg { display: flex; gap: 12px; align-items: flex-start; }
.admin-detail__msg span { min-width: 88px; color: var(--body-light, #999); }
.admin-detail__msg p { margin: 0; flex: 1; line-height: 1.7; }

/* 后台提示条 */
.admin-alert { padding: 10px 14px; border-radius: 6px; font-size: 13px; margin-top: 16px; }
.admin-alert--ok { background: #eaf7ee; color: #1f8a43; border: 1px solid #bfe6cb; }
.admin-alert--err { background: #fdecec; color: #c0392b; border: 1px solid #f3c2c2; }
.form-field--inline { display: flex; align-items: center; }
.form-check { font-size: 14px; color: var(--body); display: flex; align-items: center; gap: 6px; }

/* ---------- 信息卡（联系页） ---------- */
.info-grid { display: grid; grid-template-columns: 1fr 460px; gap: 40px; align-items: start; }
.info-list { display: flex; flex-direction: column; gap: 20px; }
.info-item {
  display: flex;
  gap: 20px;
  align-items: center;
  background: var(--bg-light);
  border-radius: var(--radius-l);
  padding: 24px;
}
.info-item__icon {
  flex: none;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--brand);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
}
.info-item__label { font-size: 13px; color: var(--body); }
.info-item__value { font-size: 18px; font-weight: 700; color: var(--title); }
.map-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-l);
  overflow: hidden;
}
.map-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}
.map-card__title { font-size: 14px; font-weight: 700; color: var(--title); }
.map-card__tag { font-size: 12px; color: var(--brand); font-weight: 500; }
.map-card__img { width: 100%; height: 420px; object-fit: cover; object-position: top center; }
.map-card__foot {
  padding: 14px 20px;
  background: var(--dark);
  color: var(--cta-sub);
  font-size: 13px;
  text-align: center;
}

/* ---------- 承诺卡（深灰） ---------- */
.promise-card {
  background: var(--dark);
  border-radius: var(--radius-xl);
  padding: 40px 36px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.promise-card__title { font-size: 22px; font-weight: 700; color: var(--white); }
.promise-item { display: flex; gap: 14px; align-items: flex-start; }
.promise-item__check { color: var(--brand); font-weight: 700; flex: none; }
.promise-item__text { font-size: 15px; color: var(--cta-sub); line-height: 1.6; }

/* ---------- FAQ ---------- */
.faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.faq-item {
  background: var(--bg-light);
  border-radius: var(--radius-l);
  padding: 22px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.faq-item__q { font-size: 16px; font-weight: 700; color: var(--title); }
.faq-item__a { font-size: 14px; color: var(--body); }
.faq-more { margin-top: 18px; font-size: 14px; color: var(--body); text-align: center; }
.faq-more a { color: var(--brand); font-weight: 600; }

/* ---------- 文章（新闻详情） ---------- */
.article-layout { display: grid; grid-template-columns: 1fr 360px; gap: 48px; align-items: start; }
.article { display: flex; flex-direction: column; gap: 24px; }
.article__tag {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  height: 26px;
  padding: 0 12px;
  border-radius: 4px;
  background: var(--badge-bg);
  color: var(--brand);
  font-size: 13px;
  font-weight: 500;
}
.article__title { font-size: 32px; font-weight: 700; color: var(--title); line-height: 1.4; }
.article__meta { display: flex; gap: 24px; font-size: 14px; color: var(--body); }
.article__cover { width: 100%; height: 400px; object-fit: cover; border-radius: var(--radius-l); }
.article p { font-size: 15px; color: var(--body); line-height: 1.9; }
.article h3 { font-size: 20px; font-weight: 700; color: var(--title); margin-top: 8px; }
.article__quote {
  display: flex;
  gap: 16px;
  background: var(--badge-bg);
  border-radius: var(--radius-m);
  padding: 20px 24px;
}
.article__quote-bar { flex: none; width: 4px; border-radius: 2px; background: var(--brand); }
.article__quote p { font-size: 16px; font-weight: 500; color: var(--title); margin: 0; }
.article__img { width: 100%; height: 340px; object-fit: cover; border-radius: var(--radius-l); }
.article-side { display: flex; flex-direction: column; gap: 24px; position: sticky; top: 96px; }
.side-card {
  background: var(--bg-light);
  border-radius: var(--radius-l);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.side-card--outline { background: var(--white); border: 1px solid var(--border); }
.side-card__title { font-size: 17px; font-weight: 700; color: var(--title); }
.side-post { display: flex; flex-direction: column; gap: 4px; }
.side-post__title { font-size: 14px; font-weight: 500; color: var(--title); line-height: 1.6; }
.side-post:hover .side-post__title { color: var(--brand); }
.side-post__cat { font-size: 12px; color: var(--body-light); }
.side-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.side-tag {
  display: inline-flex;
  align-items: center;
  height: 30px;
  padding: 0 14px;
  border-radius: 100px;
  background: var(--bg-light);
  font-size: 13px;
  color: var(--body);
}
.side-tag:hover { background: var(--badge-bg); color: var(--brand); }
.side-cta {
  background: var(--dark);
  border-radius: var(--radius-l);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.side-cta__title { font-size: 18px; font-weight: 700; color: var(--white); }
.side-cta__desc { font-size: 13px; color: var(--cta-sub); }

/* ---------- 新闻列表 ---------- */
.feature-news { display: grid; grid-template-columns: 640px 1fr; gap: 40px; align-items: center; padding: 64px 0 32px; }
.feature-news__img { width: 100%; height: 400px; object-fit: cover; border-radius: var(--radius-l); }
.feature-news__body { display: flex; flex-direction: column; gap: 16px; align-items: flex-start; }
.feature-news__tag {
  display: inline-flex;
  align-items: center;
  height: 26px;
  padding: 0 12px;
  border-radius: 4px;
  background: var(--brand);
  color: var(--white);
  font-size: 13px;
  font-weight: 500;
}
.feature-news__title { font-size: 26px; font-weight: 700; color: var(--title); line-height: 1.45; }
.feature-news__desc { font-size: 15px; color: var(--body); }
.news-list { display: flex; flex-direction: column; gap: 24px; padding: 16px 0 48px; }
.news-row {
  display: grid;
  grid-template-columns: 320px 1fr;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-l);
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.news-row:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); }
.news-row__img { width: 100%; height: 100%; min-height: 220px; object-fit: cover; }
.news-row__body { display: flex; flex-direction: column; gap: 12px; padding: 28px 32px; align-items: flex-start; }
.news-row__cat { font-size: 13px; font-weight: 500; color: var(--brand); }
.news-row__title { font-size: 20px; font-weight: 700; color: var(--title); line-height: 1.5; }
.news-row:hover .news-row__title { color: var(--brand); }
.news-row__desc { font-size: 14px; color: var(--body); }
.news-row__meta { display: flex; gap: 16px; font-size: 13px; color: var(--body-light); }
.pager { display: flex; gap: 8px; padding-top: 16px; }
.pager__item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 14px;
  border-radius: var(--radius-s);
  background: var(--bg-light);
  font-size: 14px;
  color: var(--body);
  transition: 0.15s ease;
}
.pager__item:hover { color: var(--brand); }
.pager__item.is-active { background: var(--brand); color: var(--white); }

/* ---------- 案例详情 ---------- */
.case-detail { display: block; }
.case-detail__head { display: flex; flex-direction: column; gap: 14px; margin-bottom: 32px; }
.case-detail__title { font-size: 32px; font-weight: 700; color: var(--title); }
.case-detail__meta { display: flex; flex-wrap: wrap; gap: 24px; font-size: 14px; color: var(--body); }
.case-detail__cover { width: 100%; height: 440px; object-fit: cover; border-radius: var(--radius-l); margin-bottom: 40px; }
.case-detail__body h3 { font-size: 20px; font-weight: 700; color: var(--title); margin: 8px 0 16px; }
.case-detail__body p { font-size: 15px; color: var(--body); line-height: 1.9; margin-bottom: 16px; }
.case-detail__imgs { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin: 24px 0 32px; }
.case-detail__imgs img { width: 100%; height: 260px; object-fit: cover; border-radius: var(--radius-m); }
.case-detail__panels { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin: 32px 0 40px; }
.detail-panel { background: var(--bg-light); border-radius: var(--radius-l); padding: 24px; }
.detail-panel__title { font-size: 16px; font-weight: 700; color: var(--title); margin-bottom: 12px; }
.detail-panel li { font-size: 14px; color: var(--body); padding: 6px 0; border-bottom: 1px dashed var(--border); }
.detail-panel li:last-child { border-bottom: none; }

/* ---------- 关于我们 ---------- */
.about-story { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.about-story__img { width: 100%; height: 420px; object-fit: cover; border-radius: var(--radius-l); }
.about-story__body { display: flex; flex-direction: column; gap: 16px; align-items: flex-start; }
.about-story__title { font-size: 28px; font-weight: 700; color: var(--title); }
.about-story__desc { font-size: 15px; color: var(--body); }
.timeline { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 12px; width: 100%; }
.timeline__item { display: flex; flex-direction: column; gap: 6px; padding-top: 16px; border-top: 3px solid var(--brand); }
.timeline__year { font-size: 22px; font-weight: 700; color: var(--brand); }
.timeline__desc { font-size: 13px; color: var(--body); line-height: 1.6; }
.stats-band { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.stat-card {
  background: var(--bg-light);
  border-radius: var(--radius-l);
  padding: 32px 24px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.stat-card__num { font-size: 32px; font-weight: 700; color: var(--brand); }
.stat-card__label { font-size: 13px; color: var(--body); }
.value-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.value-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-l);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.value-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.value-card__title { font-size: 18px; font-weight: 700; color: var(--title); }
.value-card__desc { font-size: 14px; color: var(--body); }
.honor-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.honor-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-l);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: flex-start;
}
.honor-card__icon {
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--brand); color: var(--white);
  display: flex; align-items: center; justify-content: center;
  font-size: 17px; font-weight: 700;
}
.honor-card__title { font-size: 16px; font-weight: 700; color: var(--title); }
.honor-card__desc { font-size: 13px; color: var(--body); }

/* ---------- 服务总览 ---------- */
.svc-total-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.svc-total {
  display: flex; flex-direction: column;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-l);
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.svc-total:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.svc-total__img { width: 100%; height: 200px; object-fit: cover; }
.svc-total__body { display: flex; flex-direction: column; gap: 10px; padding: 24px; }
.svc-total__title { font-size: 19px; font-weight: 700; color: var(--title); }
.svc-total__desc { font-size: 14px; color: var(--body); flex: 1; }
.svc-total__link { font-size: 14px; font-weight: 500; color: var(--brand); }
.svc-total__link:hover { text-decoration: underline; }
.detail-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.detail-col {
  background: var(--white);
  border-radius: var(--radius-l);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.detail-col__title { font-size: 18px; font-weight: 700; color: var(--title); padding-bottom: 12px; border-bottom: 2px solid var(--brand); }
.detail-col li { font-size: 14px; color: var(--body); padding: 7px 0; display: flex; gap: 10px; align-items: center; }
.detail-col li::before { content: ""; flex: none; width: 6px; height: 6px; border-radius: 50%; background: var(--brand); }
.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.why-card {
  background: var(--bg-light);
  border-radius: var(--radius-l);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.why-card__icon {
  width: 48px; height: 48px; border-radius: var(--radius-m);
  background: var(--brand); color: var(--white);
  display: flex; align-items: center; justify-content: center;
  font-size: 19px; font-weight: 700;
}
.why-card__title { font-size: 17px; font-weight: 700; color: var(--title); }
.why-card__desc { font-size: 14px; color: var(--body); }

/* ---------- 服务落地页 ---------- */
.svc-intro { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.svc-intro__body { display: flex; flex-direction: column; gap: 16px; align-items: flex-start; }
.svc-intro__title { font-size: 28px; font-weight: 700; color: var(--title); line-height: 1.45; }
.svc-intro__desc { font-size: 15px; color: var(--body); }
.svc-intro__img { width: 100%; height: 420px; object-fit: cover; border-radius: var(--radius-l); }
.item-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.item-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-l);
  padding: 26px 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.item-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.item-card__num {
  width: 40px; height: 40px; border-radius: var(--radius-m);
  background: var(--badge-bg); color: var(--brand);
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; font-weight: 700; margin-bottom: 6px;
}
.item-card__title { font-size: 17px; font-weight: 700; color: var(--title); }
.item-card__desc { font-size: 14px; color: var(--body); }
.media-stats { display: flex; gap: 48px; margin: 8px 0 4px; }
.media-stat { display: flex; flex-direction: column; gap: 2px; }
.media-stat__num { font-size: 28px; font-weight: 700; color: var(--brand); }
.media-stat__label { font-size: 13px; color: var(--body); }
.platform-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.platform-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-l);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.platform-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.platform-card__img { width: 100%; height: 300px; object-fit: cover; object-position: top center; }
.platform-card__body { display: flex; flex-direction: column; gap: 8px; padding: 20px; }
.platform-card__name { font-size: 15px; font-weight: 700; color: var(--title); }
.platform-card__desc { font-size: 13px; color: var(--body); line-height: 1.7; }

/* ---------- 移动端底部固定操作条 ---------- */
.mobile-bar {
  display: none;
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 90;
  background: var(--white);
  border-top: 1px solid var(--border);
  padding: 10px 16px calc(10px + env(safe-area-inset-bottom));
  gap: 10px;
}
.mobile-bar .btn { flex: 1; }

/* ---------- 响应式 ---------- */
@media (max-width: 1180px) {
  .feature-news { grid-template-columns: 1fr; }
  .feature-news__img { height: 320px; }
  .info-grid { grid-template-columns: 1fr; }
  .article-layout { grid-template-columns: 1fr; }
  .article-side { position: static; }
}

@media (max-width: 992px) {
  .section { padding: 56px 0; }
  .nav__links, .nav__tel { display: none; }
  .nav__burger { display: flex; }
  .hero { padding: 56px 0 64px; }
  .hero__inner { grid-template-columns: 1fr; gap: 36px; }
  .hero__title { font-size: 34px; }
  .hero__img { height: 280px; }
  .hero__stats { gap: 32px; }
  .trust-bar__grid { grid-template-columns: repeat(2, 1fr); }
  .trust-bar__item { border-bottom: 1px solid var(--border); }
  .trust-bar__item:nth-child(2) { border-right: none; }
  .svc-grid, .case-grid, .news-grid, .svc-total-grid, .detail-cols, .item-grid,
  .why-grid, .value-grid, .honor-grid, .platform-grid, .case-detail__panels { grid-template-columns: repeat(2, 1fr); }
  .flow-grid { grid-template-columns: repeat(2, 1fr); }
  .about-brief, .about-story, .svc-intro { grid-template-columns: 1fr; gap: 32px; }
  .about-brief__img, .about-story__img, .svc-intro__img { height: 280px; }
  .faq-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .stats-band, .timeline { grid-template-columns: repeat(2, 1fr); }
  .news-row { grid-template-columns: 240px 1fr; }
  .news-row__img { min-height: 200px; }
  .case-detail__imgs { grid-template-columns: 1fr; }
  .case-detail__cover, .article__cover { height: 280px; }
  .map-card__img { height: 360px; }
  .sec-title { font-size: 26px; }
  .page-banner__title { font-size: 30px; }
  .cta-banner__title { font-size: 24px; }
  .mobile-bar { display: flex; }
  body { padding-bottom: 68px; }
}

@media (max-width: 640px) {
  body { font-size: 14px; }
  .container { padding: 0 20px; }
  .section { padding: 44px 0; }
  .sec-head { margin-bottom: 32px; }
  .sec-head--row { flex-direction: column; align-items: flex-start; gap: 16px; }
  .hero__title { font-size: 28px; }
  .hero__sub { font-size: 14px; }
  .hero__actions { gap: 10px; }
  .hero__actions .btn { flex: 1; }
  .hero__stats { flex-wrap: wrap; gap: 20px 28px; }
  .hero__stat-num { font-size: 24px; }
  .hero__img-tag { font-size: 12px; height: 32px; padding: 0 12px; }
  .trust-bar__grid { grid-template-columns: 1fr; }
  .trust-bar__item { border-right: none; padding: 20px; }
  .svc-grid, .case-grid, .news-grid, .svc-total-grid, .detail-cols, .item-grid,
  .why-grid, .value-grid, .honor-grid, .platform-grid, .case-detail__panels,
  .flow-grid, .stats-band, .timeline { grid-template-columns: 1fr; }
  .svc-card__img, .case-card__img, .news-card__img { height: 180px; }
  .platform-card__img { height: 260px; }
  .news-row { grid-template-columns: 1fr; }
  .news-row__img { min-height: 180px; height: 180px; }
  .news-row__body { padding: 20px; }
  .form-card { padding: 24px 20px; }
  .promise-card { padding: 28px 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { justify-content: center; text-align: center; }
  .case-detail__cover, .article__cover, .map-card__img { height: 220px; }
  .article__title { font-size: 24px; }
  .case-detail__title { font-size: 24px; }
  .feature-news__title { font-size: 21px; }
  .feature-news__img { height: 220px; }
  .page-banner { padding: 48px 0; }
  .cta-banner { padding: 44px 0; }
  .cta-banner__actions .btn { width: 100%; }
  .pager { flex-wrap: wrap; }
}

/* ---------- 动效 ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- 可访问性：跳主内容链接（P1 新增，纯增益不改动既有样式） ---------- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 1000;
  padding: 10px 20px;
  background: var(--brand);
  color: var(--white);
  font-size: 14px;
  border-radius: 0 0 var(--radius-s) 0;
}
.skip-link:focus {
  left: 0;
  outline: 2px solid var(--dark);
  outline-offset: 2px;
}

/* ---------- 可访问性：屏幕阅读器专用文本（视觉隐藏） ---------- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 后台富文本编辑器（Quill） ---------- */
.rich-editor.ql-container.ql-snow {
  border: 1px solid var(--border, #ECECEC);
  border-radius: 0 0 8px 8px;
  font-family: inherit;
  font-size: 15px;
}
.ql-toolbar.ql-snow {
  border: 1px solid var(--border, #ECECEC);
  border-radius: 8px 8px 0 0;
  background: #FBFBFC;
}
.ql-toolbar.ql-snow + .ql-container.ql-snow { border-top: none; }
.ql-editor {
  min-height: 340px;
  line-height: 1.7;
  color: #1F1F1F;
}
.ql-editor.ql-blank::before {
  color: #9AA3AD;
  font-style: normal;
  font-family: inherit;
}
.ql-snow .ql-picker { font-family: inherit; }
/* 富文本内嵌入的图片：自适应宽度，避免溢出编辑器 */
.ql-editor img { max-width: 100%; height: auto; border-radius: 6px; margin: 6px 0; }
/* 富文本图片上传进行中的占位提示 */
.rich-editor__uploading { font-size: 12px; color: var(--brand); margin-top: 6px; }

/* ---------- 企业微信客服浮动按钮（左侧垂直居中） ---------- */
.cs-float-btn {
  position: fixed;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  z-index: 900;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 14px 9px;
  background: var(--brand, #FF6600);
  color: #fff;
  border: none;
  border-radius: 0 12px 12px 0;
  box-shadow: 0 8px 22px rgba(255, 102, 0, 0.32);
  cursor: pointer;
  text-decoration: none;
  transition: background .2s ease, transform .2s ease;
}
.cs-float-btn:hover,
.cs-float-btn:focus-visible {
  background: var(--brand-dark, #E65C00);
  transform: translateY(-50%) translateX(2px);
  outline: none;
}
.cs-float-btn__icon { width: 24px; height: 24px; display: block; }
.cs-float-btn__label { font-size: 13px; line-height: 1.2; writing-mode: vertical-rl; letter-spacing: 2px; }
/* 移动端：仍左侧竖中，仅缩小尺寸避免遮挡正文 */
@media (max-width: 600px) {
  .cs-float-btn { padding: 9px 6px; border-radius: 0 8px 8px 0; }
  .cs-float-btn__icon { width: 20px; height: 20px; }
  .cs-float-btn__label { font-size: 11px; letter-spacing: 1px; }
}