/* ==========================================================================
   算数-精密制造ERP · 宣传站 2026 商务版
   - 顶栏与二级导航：参考 servechina.cn / zhubao.zerocod.cn 的大面板
   - 页脚：完全按 zhubao.zerocod.cn 页脚布局（品牌列 + 三列导航 + 二维码列 + 信任条 + 版权）
   - 本文件在 intro.css 之后加载，只覆盖顶栏、页脚与新增版块
   ========================================================================== */

:root {
  --sh-container: 1180px;
  --sh-header-h: 68px;
  --sh-surface: #0e1a25;
  --sh-surface-2: #12212e;
  --sh-hover: #172a3a;
  --sh-line: rgba(215, 226, 234, .1);
  --sh-text: #e8eef3;
  --sh-muted: #95a9bb;
  --sh-amber-soft: rgba(232, 163, 23, .12);
}

body { padding-top: 0; }

/* ── 顶栏 ─────────────────────────────────────────────────────────────── */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 120;
  color: var(--sh-text);
  background: linear-gradient(180deg, rgba(7, 16, 24, .92), rgba(7, 16, 24, .55));
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(10px);
  transition: background .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.site-header.is-solid {
  background: rgba(8, 17, 26, .96);
  border-bottom-color: var(--sh-line);
  box-shadow: 0 10px 30px rgba(0, 0, 0, .28);
}
.site-header > .container {
  position: relative;
  z-index: 1;
  max-width: var(--sh-container);
  margin: 0 auto;
  padding: 0 24px;
}
.header-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: var(--sh-header-h);
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: inherit;
  line-height: 1.2;
  min-width: 0;
}
.brand-logo { height: 34px; width: auto; display: block; flex-shrink: 0; }
.brand-text { display: flex; flex-direction: column; gap: 1px; min-width: 0; }
.brand-cn {
  font-size: .98rem;
  font-weight: 800;
  letter-spacing: .01em;
  color: #fff;
  white-space: nowrap;
}
.brand-sub {
  font-size: .68rem;
  letter-spacing: .12em;
  color: var(--amber);
  white-space: nowrap;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border: 0;
  background: none;
  cursor: pointer;
}
.nav-toggle-bar { display: block; width: 22px; height: 2px; background: var(--sh-text); border-radius: 1px; }
.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;
}

.site-nav { display: flex; align-items: center; gap: 2px; }
.site-nav a,
.nav-dropdown-trigger {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 8px 12px;
  border: 0;
  border-radius: 7px;
  background: none;
  color: rgba(232, 238, 243, .75);
  font: inherit;
  font-size: .875rem;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: color .18s ease, background .18s ease;
}
.site-nav a:hover,
.nav-dropdown-trigger:hover { color: #fff; }
.site-nav a.is-active { color: #fff; background: var(--sh-amber-soft); }
.nav-dropdown { position: relative; }
.nav-dropdown.is-active > .nav-dropdown-trigger { color: #fff; }
.nav-dropdown-caret {
  width: 0; height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid currentColor;
  opacity: .65;
  transition: transform .2s ease;
}
.nav-dropdown--panel { position: static; height: var(--sh-header-h); display: flex; align-items: center; }
.site-nav .nav-panel {
  display: none;
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  width: min(46rem, calc(100vw - 32px));
  padding-top: 8px;
  z-index: 130;
}
.site-nav .nav-panel__card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 232px;
  gap: 14px;
  padding: 14px;
  background: var(--sh-surface);
  border: 1px solid var(--sh-line);
  border-radius: 12px;
  box-shadow: 0 24px 56px rgba(0, 0, 0, .55);
}
.site-nav .nav-panel__links { display: grid; gap: 2px; align-content: start; min-width: 0; }
.site-nav .nav-panel__links a {
  display: grid;
  gap: 2px;
  padding: 9px 11px;
  border-radius: 8px;
  text-decoration: none;
  white-space: normal;
  transition: background .18s ease;
}
.site-nav .nav-panel__links strong { font-size: .875rem; font-weight: 700; color: var(--sh-text); }
.site-nav .nav-panel__links em {
  font-style: normal;
  font-size: .755rem;
  line-height: 1.5;
  color: var(--sh-muted);
}
.site-nav .nav-panel__links a:hover { background: var(--sh-hover); }
.site-nav .nav-panel__links a:hover strong { color: var(--amber); }
.site-nav .nav-panel__feature {
  display: grid;
  gap: 6px;
  align-content: start;
  padding: 10px;
  border-radius: 10px;
  background: var(--sh-hover);
  border: 1px solid var(--sh-line);
  text-decoration: none;
  white-space: normal;
  transition: border-color .2s ease, transform .2s ease;
}
.site-nav .nav-panel__feature img {
  display: block;
  width: 100%;
  height: 112px;
  object-fit: cover;
  border-radius: 7px;
}
.site-nav .nav-panel__feature strong { font-size: .84rem; color: var(--sh-text); }
.site-nav .nav-panel__feature em {
  font-style: normal;
  font-size: .74rem;
  line-height: 1.5;
  color: var(--sh-muted);
}
.site-nav .nav-panel__cta { font-size: .755rem; font-weight: 700; color: var(--amber); }
.site-nav .nav-panel__feature:hover { border-color: rgba(232, 163, 23, .4); transform: translateY(-1px); }

.nav-login {
  margin-left: 6px;
  border: 1px solid rgba(232, 163, 23, .45) !important;
  color: var(--amber) !important;
  font-weight: 700 !important;
}
.nav-login:hover { background: var(--sh-amber-soft) !important; border-color: var(--amber) !important; }
.nav-cta {
  margin-left: 6px;
  background: var(--amber) !important;
  color: #1a1200 !important;
  font-weight: 800 !important;
}
.nav-cta:hover { background: var(--amber-deep) !important; color: #1a1200 !important; }

@media (min-width: 901px) {
  .nav-dropdown:hover:not(.is-collapsed) .nav-panel,
  .nav-dropdown.is-open .nav-panel {
    display: block;
    visibility: visible;
    opacity: 1;
    pointer-events: auto;
  }
  .nav-dropdown:hover:not(.is-collapsed) .nav-dropdown-caret,
  .nav-dropdown.is-open .nav-dropdown-caret { transform: rotate(180deg); }
  .nav-dropdown.is-open > .nav-dropdown-trigger { color: #fff; }
}
@media (max-width: 900px) {
  .nav-toggle { display: flex; }
  .site-nav {
    display: none;
    position: absolute;
    top: var(--sh-header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 12px 16px 20px;
    max-height: calc(100vh - var(--sh-header-h));
    overflow-y: auto;
    background: #0b1722;
    border-bottom: 1px solid var(--sh-line);
  }
  .site-nav.is-open { display: flex; }
  .nav-dropdown-trigger { width: 100%; justify-content: space-between; text-align: left; }
  .nav-dropdown--panel { height: auto; display: block; position: static; }
  .site-nav .nav-panel { position: static; display: none; width: auto; padding-top: 0; transform: none; }
  .site-nav .nav-panel__card {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
    padding: 4px 0 8px 8px;
    background: transparent;
    border: 0;
    box-shadow: none;
  }
  .site-nav .nav-panel__feature { padding: 8px 0; background: transparent; border: 0; }
  .site-nav .nav-panel__feature img { height: 104px; }
  .site-nav .nav-panel .nav-panel__cta { display: none; }
  .nav-dropdown.is-open .nav-panel { display: block; }
  .nav-dropdown.is-open .nav-dropdown-caret { transform: rotate(180deg); }
  .nav-login, .nav-cta { margin-left: 0; justify-content: center; margin-top: 6px; }
}

/* 锚点定位避开固定顶栏 */
[id] { scroll-margin-top: calc(var(--sh-header-h) + 16px); }

/* ── 通用容器与版块补充 ───────────────────────────────────────────────── */
.container { max-width: var(--sh-container); margin: 0 auto; padding: 0 24px; }
.section-narrow { max-width: var(--sh-container); margin: 0 auto; }

.kpi-band {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin: 1.75rem 0 0;
  background: rgba(215, 226, 234, .12);
  border: 1px solid rgba(215, 226, 234, .12);
  border-radius: 8px;
  overflow: hidden;
}
.kpi-band div { padding: 1rem 1.1rem; background: rgba(9, 20, 30, .82); }
.kpi-band b {
  display: block;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--amber);
  letter-spacing: -.01em;
}
.kpi-band span { font-size: .78rem; color: var(--muted); }

/* 场景图卡 */
.scene-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.scene-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 260px;
  padding: 1.35rem;
  border: 1px solid rgba(215, 226, 234, .12);
  border-radius: 8px;
  overflow: hidden;
  text-decoration: none;
  color: var(--text);
  isolation: isolate;
}
.scene-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -2;
  transition: transform .6s ease;
}
.scene-card::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, rgba(7, 16, 24, .2) 0%, rgba(7, 16, 24, .82) 62%, rgba(7, 16, 24, .95) 100%);
}
.scene-card:hover img { transform: scale(1.04); }
.scene-card em {
  font-style: normal;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--amber);
  margin-bottom: auto;
}
.scene-card h4 { margin: .5rem 0 .35rem; font-size: 1.05rem; color: #fff; }
.scene-card p { margin: 0; font-size: .84rem; color: #b9c9d6; line-height: 1.65; }

/* 左右图文 */
.split {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  gap: 2.5rem;
  align-items: center;
}
.split-media {
  position: relative;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid rgba(215, 226, 234, .12);
  aspect-ratio: 4 / 3;
}
.split-media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.split-body h4 { margin: 0 0 .6rem; font-size: 1.15rem; color: #fff; }
.split-body p { margin: 0 0 1rem; color: var(--muted); }

/* 清单式条目 */
.check-list { list-style: none; margin: 0; padding: 0; display: grid; gap: .55rem; }
.check-list li {
  position: relative;
  padding-left: 1.5rem;
  font-size: .9rem;
  color: #c4d2de;
  line-height: 1.7;
}
.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .55rem;
  width: .6rem;
  height: .6rem;
  border-radius: 2px;
  background: var(--amber);
  opacity: .85;
}

/* 表格 */
.table-wrap { overflow-x: auto; border: 1px solid rgba(215, 226, 234, .12); border-radius: 8px; }
.biz-table { width: 100%; border-collapse: collapse; min-width: 680px; font-size: .88rem; }
.biz-table th,
.biz-table td { padding: .85rem 1rem; text-align: left; border-bottom: 1px solid rgba(215, 226, 234, .09); vertical-align: top; }
.biz-table th { background: rgba(232, 163, 23, .08); color: #fff; font-weight: 700; font-size: .82rem; letter-spacing: .02em; }
.biz-table td { color: #b9c9d6; }
.biz-table tr:last-child td { border-bottom: 0; }
.biz-table td strong { color: #fff; font-weight: 700; }
.biz-table .is-key { color: var(--amber); font-weight: 700; }

/* 实施路径 */
.steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; counter-reset: step; }
.step {
  position: relative;
  padding: 1.3rem 1.2rem;
  background: rgba(14, 26, 37, .72);
  border: 1px solid rgba(215, 226, 234, .12);
  border-radius: 8px;
}
.step::before {
  counter-increment: step;
  content: "0" counter(step);
  display: block;
  font-family: "Archivo Black", "Arial Black", sans-serif;
  font-size: .8rem;
  color: var(--amber);
  margin-bottom: .5rem;
}
.step h4 { margin: 0 0 .35rem; font-size: .98rem; color: #fff; }
.step p { margin: 0; font-size: .84rem; color: var(--muted); }
.step em { display: block; margin-top: .6rem; font-style: normal; font-size: .74rem; color: var(--amber); }

/* FAQ */
.faq-list { display: grid; gap: .6rem; max-width: 960px; margin: 0 auto; }
.faq-list details {
  border: 1px solid rgba(215, 226, 234, .12);
  border-radius: 8px;
  background: rgba(14, 26, 37, .6);
  overflow: hidden;
}
.faq-list summary {
  position: relative;
  padding: .95rem 2.6rem .95rem 1.1rem;
  font-size: .95rem;
  font-weight: 700;
  color: #fff;
  cursor: pointer;
  list-style: none;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: "+";
  position: absolute;
  right: 1.1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--amber);
  font-size: 1.1rem;
  font-weight: 700;
}
.faq-list details[open] summary::after { content: "−"; }
.faq-list .faq-a { padding: 0 1.1rem 1rem; color: var(--muted); font-size: .88rem; line-height: 1.8; }
.faq-list .faq-a p { margin: 0 0 .45rem; }
.faq-list .faq-a p:last-child { margin: 0; }

/* 资源下载 */
.dl-hero-band {
  padding: calc(var(--sh-header-h) + 3.4rem) 0 2.4rem;
  background:
    radial-gradient(900px 420px at 78% -10%, rgba(232, 163, 23, .16), transparent 62%),
    linear-gradient(180deg, #071018 0%, #0b1621 100%);
  border-bottom: 1px solid rgba(215, 226, 234, .1);
}
.dl-hero-band h1 { margin: .7rem 0 .8rem; font-size: clamp(1.9rem, 3.2vw, 2.8rem); color: #fff; line-height: 1.2; }
.dl-hero-band p { max-width: 760px; margin: 0; color: var(--muted); line-height: 1.8; }

.dl-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.1rem; }
.dl-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 1.5rem 1.45rem 1.3rem;
  background: linear-gradient(180deg, #10202e 0%, #0d1a25 100%);
  border: 1px solid rgba(215, 226, 234, .12);
  border-radius: 8px;
  overflow: hidden;
}
.dl-card::before { content: ""; position: absolute; inset: 0 0 auto 0; height: 3px; background: var(--amber); }
.dl-card.dl-mint::before { background: var(--mint); }
.dl-card.dl-blue::before { background: #5b9bd5; }
.dl-card.dl-plum::before { background: #a78bfa; }
.dl-card-top { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: .9rem; }
.dl-fmt {
  font-size: .68rem;
  font-weight: 800;
  letter-spacing: .1em;
  color: #071018;
  background: var(--amber);
  padding: .22rem .5rem;
  border-radius: 3px;
}
.dl-card.dl-mint .dl-fmt { background: var(--mint); }
.dl-card.dl-blue .dl-fmt { background: #5b9bd5; }
.dl-card.dl-plum .dl-fmt { background: #a78bfa; }
.dl-meta { font-size: .74rem; color: #6f879b; }
.dl-card h3 { margin: 0 0 .45rem; font-size: 1.06rem; color: #fff; }
.dl-card p { margin: 0 0 .9rem; font-size: .86rem; color: var(--muted); line-height: 1.75; }
.dl-card ul { margin: 0 0 1.1rem; padding-left: 1.1rem; color: #a9bccb; font-size: .82rem; line-height: 1.9; }
.dl-card .dl-file {
  display: flex;
  align-items: center;
  gap: .5rem;
  margin: auto 0 .8rem;
  padding: .55rem .7rem;
  border: 1px dashed rgba(215, 226, 234, .18);
  border-radius: 6px;
  font-size: .76rem;
  color: #9fb3c4;
  word-break: break-all;
}
.dl-actions { display: flex; flex-wrap: wrap; gap: .5rem; }
.dl-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .35rem;
  min-height: 2.2rem;
  padding: .45rem .9rem;
  border-radius: 5px;
  font-size: .8rem;
  font-weight: 700;
  text-decoration: none;
  border: 1px solid transparent;
  transition: .18s ease;
}
.dl-btn-main { background: var(--amber); color: #1a1200; }
.dl-btn-main:hover { background: var(--amber-deep); }
.dl-btn-ghost { border-color: rgba(215, 226, 234, .24); color: #d7e2ea; }
.dl-btn-ghost:hover { border-color: var(--amber); color: var(--amber); }

.dl-note {
  margin-top: 1.6rem;
  padding: 1rem 1.1rem;
  border-left: 3px solid var(--amber);
  background: rgba(232, 163, 23, .07);
  color: #b9c9d6;
  font-size: .84rem;
  line-height: 1.8;
  border-radius: 0 6px 6px 0;
}

/* AI / 结构化说明（不抢视觉） */
.ai-note {
  max-width: var(--sh-container);
  margin: 0 auto;
  padding: 1.6rem 24px 2.4rem;
  color: #62798d;
  font-size: .74rem;
  line-height: 1.9;
}
.ai-note a { color: #8199ac; }
.ai-note strong { color: #90a7ba; font-weight: 600; }

/* ── 页脚：按 zhubao.zerocod.cn 布局 ─────────────────────────────────── */
.site-footer {
  position: relative;
  z-index: 1;
  margin-top: 24px;
  padding: 0 0 20px;
  background: linear-gradient(180deg, rgba(8, 10, 14, .35) 0%, rgba(4, 6, 10, .98) 100%);
  overflow: hidden;
  border-top: 0;
}
.footer-top-line {
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(232, 163, 23, .35) 20%, rgba(232, 163, 23, .58) 50%, rgba(232, 163, 23, .35) 80%, transparent 100%);
}
.footer-shell {
  position: relative;
  max-width: 980px;
  margin: 0 auto;
  padding: 34px 24px 20px;
}
.footer-main {
  display: grid;
  grid-template-columns: minmax(190px, 232px) minmax(0, 1fr) auto;
  gap: 26px 36px;
  align-items: start;
}
.footer-brand-col { display: flex; flex-direction: column; align-items: flex-start; gap: 10px; }
.footer-logo-link { display: block; line-height: 0; }
.footer-logo { display: block; max-width: 170px; max-height: 40px; width: auto; height: auto; object-fit: contain; }
.footer-brand-name {
  margin: 0;
  font-size: 1.02rem;
  font-weight: 800;
  color: var(--amber);
  letter-spacing: .02em;
}
.footer-slogan { font-size: .8rem; color: var(--sh-muted); line-height: 1.6; margin: 0; max-width: 224px; }
.footer-cta {
  display: inline-flex;
  align-items: center;
  margin-top: 2px;
  padding: 7px 16px;
  border-radius: 999px;
  font-size: .78rem;
  font-weight: 700;
  color: #14100a;
  text-decoration: none;
  background: linear-gradient(135deg, var(--amber), #b97c0d);
  transition: filter .2s ease, box-shadow .2s ease;
}
.footer-cta:hover { filter: brightness(1.08); box-shadow: 0 3px 14px rgba(232, 163, 23, .32); }
.footer-nav-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px 24px; }
.footer-col h4 {
  margin: 0 0 10px;
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--amber);
}
.footer-col-list { list-style: none; margin: 0; padding: 0; }
.footer-col-list li { margin: 0; }
.footer-col-list a {
  display: block;
  padding: 3px 0;
  font-size: .8rem;
  line-height: 1.45;
  color: var(--sh-muted);
  text-decoration: none;
  transition: color .2s ease;
}
.footer-col-list a:hover { color: #fff; }
.footer-qr-col { align-self: center; justify-self: end; }
.footer-wecom { display: flex; align-items: center; gap: 12px; margin: 0; }
.footer-wecom img {
  display: block;
  width: 88px;
  height: 88px;
  border-radius: 6px;
  background: #fff;
  padding: 3px;
  object-fit: contain;
}
.footer-wecom figcaption { display: flex; flex-direction: column; gap: 3px; max-width: 128px; }
.footer-wecom figcaption strong { font-size: .78rem; color: #dbe6ee; }
.footer-wecom figcaption span { font-size: .7rem; line-height: 1.5; color: #7f94a6; }

.footer-trust-bar {
  max-width: 980px;
  margin: 0 auto;
  padding: 16px 24px 12px;
  border-top: 1px solid rgba(255, 255, 255, .06);
  text-align: center;
}
.footer-trust-line,
.footer-trust-badges,
.footer-trust-meta { max-width: 880px; margin-inline: auto; }
.footer-trust-line { margin: 0 auto 12px; font-size: .78rem; color: var(--sh-muted); line-height: 1.5; }
.footer-trust-line strong { color: var(--amber); font-weight: 700; }
.footer-trust-sep { margin: 0 4px; opacity: .35; }
.footer-trust-badges {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin: 0 auto 12px;
  padding: 0;
}
.footer-trust-badges li {
  padding: 4px 10px;
  border-radius: 999px;
  font-size: .72rem;
  color: var(--amber);
  background: rgba(232, 163, 23, .08);
  border: 1px solid rgba(232, 163, 23, .2);
  white-space: nowrap;
}
.footer-trust-meta { margin: 0 auto; font-size: .78rem; color: var(--sh-muted); line-height: 1.7; }
.footer-trust-meta a { color: var(--sh-muted); text-decoration: none; }
.footer-trust-meta a:hover { color: #fff; }
.footer-bottom {
  max-width: 980px;
  margin: 0 auto;
  padding: 12px 24px 16px;
  border-top: 1px solid rgba(255, 255, 255, .05);
  text-align: center;
}
.footer-bottom-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px 14px; margin-bottom: 8px; }
.footer-bottom-links a { font-size: .74rem; color: var(--sh-muted); text-decoration: none; }
.footer-bottom-links a:hover { color: #fff; }
.footer-copyright { margin: 0; font-size: .72rem; color: var(--sh-muted); opacity: .88; line-height: 1.6; }

/* ── 移动端底部快捷条 ─────────────────────────────────────────────────── */
.mobile-contact-bar {
  display: none;
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 900;
  padding: 8px 12px calc(8px + env(safe-area-inset-bottom, 0px));
  background: rgba(8, 12, 17, .96);
  border-top: 1px solid rgba(255, 255, 255, .08);
  backdrop-filter: blur(12px);
  grid-template-columns: 1fr 1fr 1.2fr;
  gap: 8px;
}
.mobile-contact-bar-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: 8px 6px;
  border-radius: 10px;
  font-size: .72rem;
  color: var(--sh-muted);
  text-decoration: none;
  border: 1px solid rgba(255, 255, 255, .08);
  background: rgba(255, 255, 255, .03);
}
.mobile-contact-bar-icon { font-size: 1rem; line-height: 1; }
.mobile-contact-bar-btn--cta {
  background: linear-gradient(135deg, var(--amber), #b97c0d);
  color: #14100a;
  border-color: transparent;
  font-weight: 700;
}

@media (max-width: 900px) {
  .kpi-band { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .scene-grid { grid-template-columns: minmax(0, 1fr); }
  .split { grid-template-columns: minmax(0, 1fr); gap: 1.5rem; }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .dl-grid { grid-template-columns: minmax(0, 1fr); }
  .footer-main { grid-template-columns: minmax(0, 1fr); gap: 26px; }
  .footer-brand-col { align-items: center; text-align: center; }
  .footer-slogan { max-width: none; }
  .footer-nav-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
  .footer-qr-col { justify-self: center; align-self: center; }
  .mobile-contact-bar { display: grid; }
  body { padding-bottom: calc(64px + env(safe-area-inset-bottom, 0px)); }
  .hero-deck { min-height: 92svh; }
  .hero-slide { padding: 6.4rem 1.35rem 7rem; }
}
@media (max-width: 520px) {
  .steps { grid-template-columns: minmax(0, 1fr); }
  .footer-nav-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .brand-sub { display: none; }
}

/* 长中文标题在 hero 不撑破 */
.hero-brand { white-space: normal; }
@media (min-width: 901px) { .hero-brand { white-space: nowrap; } }