/* ============================================================
   景泓企云官网 · 统一视觉与排版系统
   设计原则：矩形、45°切角、清晰层级、语义完整换行
   ============================================================ */
:root {
  --blue: #2b6bff;
  --blue-deep: #1e51d4;
  --blue-ink: #123a9e;
  --navy: #0b1730;
  --navy-2: #12224a;
  --ink: #17233d;
  --muted: #5c6c88;
  --bg: #f5f8fd;
  --card: #fff;
  --line: #e2e9f5;
  --amber: #ff9d2b;
  --green: #17b26a;
  --cut: 14px;
  --shadow: 0 10px 30px rgba(18, 42, 96, .08);
  --measure-reading: 760px;
  --measure-wide: 1132px;
  --leading-body: 1.65;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: #fff;
  font-size: 15px;
  line-height: var(--leading-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: var(--blue); text-decoration: none; }
a:hover { color: var(--blue-deep); }
button { font: inherit; }
.wrap { width: 100%; max-width: 1132px; max-width: var(--measure-wide); margin: 0 auto; padding: 0 24px; }
.section { padding: 62px 0; }
.section.tight { padding: 42px 0 46px; }
.section.bg { background: var(--bg); }
.section.dark { background: linear-gradient(160deg, var(--navy) 0%, var(--navy-2) 100%); color: #eaf1ff; }
.center { text-align: center; }
.center .sub { margin-left: auto; margin-right: auto; }
.center .h2, .center h2, .center .h3, .center h3 { margin-left: auto; margin-right: auto; }

/* 文字层级：标题尽量按语义块自然换行，不用 balance 强行平均 */
h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.28;
  word-break: normal;
  overflow-wrap: normal;
  text-wrap: pretty;
  line-break: strict;
}
.h2 { max-width: 760px; margin-bottom: 14px; font-size: clamp(26px, 2.8vw, 32px); }
.sub { max-width: 760px; max-width: var(--measure-reading); color: var(--muted); text-wrap: balance; }
.dark .sub { color: #a9bcdf; }
.kicker {
  display: inline-block;
  margin-bottom: 10px;
  color: var(--blue);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .06em;
  line-height: 1.35;
  text-wrap: pretty;
}
.dark .kicker { color: #7ea6ff; }
.section-lead { color: var(--muted); font-size: 17px; font-weight: 600; line-height: 1.55; margin: -4px auto 10px; }
.cta-lead { color: #dbe7ff; font-size: 18px; font-weight: 600; line-height: 1.35; margin-top: -2px; }
.ai-lede { margin-top: 10px; }
.nowrap { white-space: nowrap; }

/* 45°切角 */
.cut-tr { clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%); }
.cut-bl { clip-path: polygon(0 0, 100% 0, 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut))); }
.cut-2 { clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut))); }

/* 按钮 */
.btn {
  display: inline-block;
  cursor: pointer;
  border: 0;
  padding: 13px 30px;
  color: var(--blue);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: .02em;
  white-space: nowrap;
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
  transition: transform .15s ease, background .15s ease, color .15s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--blue); color: #fff !important; }
.btn-primary:hover { background: var(--blue-deep); }
.btn-ghost { background: transparent; color: var(--blue) !important; box-shadow: inset 0 0 0 1.5px var(--blue); }
.btn-ghost:hover { background: rgba(43, 107, 255, .07); }
.btn-ghost.on-dark { color: #fff !important; box-shadow: inset 0 0 0 1.5px rgba(255, 255, 255, .65); }
.btn-ghost.on-dark:hover { background: rgba(255, 255, 255, .1); }
.btn-sm { padding: 9px 20px; font-size: 14px; }
.btn-group { display: flex; flex-wrap: wrap; align-items: center; justify-content: flex-start; gap: 12px; }
.center .btn-group { justify-content: center; }

/* 居中标题两行均衡；窄屏居中段落末行防孤字 */
.center h2, .center h3, .cta-band h2 { text-wrap: balance; }
@media (max-width: 760px) {
  .center .sub, .cta-band p, .center .section-lead { text-wrap: balance; }
}

/* 导航 */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, .96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(8px);
}
.nav-inner { display: flex; align-items: center; height: 64px; gap: 28px; }
.logo { display: flex; align-items: center; gap: 10px; color: var(--ink) !important; font-size: 20px; font-weight: 800; line-height: 1; white-space: nowrap; }
.logo-img { width: 32px; height: 32px; object-fit: contain; }
.nav-links { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav-links a { padding: 8px 13px; color: var(--ink); font-size: 15px; line-height: 1.25; white-space: nowrap; }
.nav-links a:hover, .nav-links a.active { color: var(--blue); }
.nav-links a.active { font-weight: 700; }
.nav-cta { margin-left: 10px; }
.nav-burger { display: none; margin-left: auto; padding: 5px 8px; border: 0; background: transparent; color: var(--ink); font-size: 24px; line-height: 1; cursor: pointer; }

/* 首页 Hero */
.hero {
  padding: 88px 0 92px;
  background: radial-gradient(900px 420px at 85% -10%, rgba(43, 107, 255, .18), transparent 60%), linear-gradient(180deg, #f7faff 0%, #eef3fd 100%);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 34px), 0 100%);
}
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); gap: 48px; align-items: center; }
.hero h1 { max-width: 600px; font-size: clamp(34px, 4vw, 44px); letter-spacing: .01em; line-height: 1.18; }
.hero h1 > span { display: block; }
.hero h1 em { color: var(--blue); font-style: normal; white-space: nowrap; }
.hero .lede { max-width: 560px; margin: 18px 0 30px; color: var(--muted); font-size: 18px; line-height: 1.65; }
.hero-actions { max-width: 100%; }
.hero-actions .btn { flex: 0 1 auto; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.tag { padding: 5px 12px; border: 1px solid var(--line); background: #fff; color: var(--blue-ink); font-size: 13px; line-height: 1.35; letter-spacing: .02em; white-space: nowrap; clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 0 100%); }
.hero-visual { min-width: 0; }
.hero-panel { padding: 34px 32px; background: linear-gradient(155deg, var(--navy) 0%, #16307a 100%); color: #fff; clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 22px 100%, 0 calc(100% - 22px)); box-shadow: 0 24px 60px rgba(11, 23, 48, .28); }
.hero-panel p { color: #a9bcdf; font-size: 14px; line-height: 1.45; }
.hero-panel .num { color: #fff; font-size: 40px; font-weight: 800; line-height: 1.1; white-space: nowrap; }
.hero-panel .num small { color: #9db8f5; font-size: 16px; font-weight: 600; line-height: 1.2; }
.hero-panel .row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 26px; margin: 18px 0; min-width: 0; }
.hero-panel .row.panel-stats-actions { grid-template-columns: repeat(2, minmax(0, 1fr)) auto; align-items: center; }
.hero-panel .row > * { min-width: 0; }
.hero-panel .divider { height: 1px; margin: 6px 0 16px; background: rgba(255, 255, 255, .14); }

/* 卡片网格 */
.grid { display: grid; gap: 22px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid > * { min-width: 0; }
.card { position: relative; min-width: 0; padding: 28px 26px; border: 1px solid var(--line); background: var(--card); clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%); transition: box-shadow .18s ease, transform .18s ease; }
.card:hover { box-shadow: var(--shadow); transform: translateY(-3px); }
.card h3 { margin-bottom: 10px; font-size: 19px; }
.card p { color: var(--muted); font-size: 14.5px; line-height: 1.65; }
.card .ico { display: flex; align-items: center; justify-content: center; width: 44px; height: 44px; margin-bottom: 16px; background: rgba(43, 107, 255, .1); color: var(--blue); clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px)); }
.card .ico svg { display: block; width: 24px; height: 24px; }
.dark .card { border-color: rgba(255, 255, 255, .12); background: rgba(255, 255, 255, .05); }
.dark .card h3 { color: #fff; }
.dark .card p { color: #a9bcdf; }
.dark .card .ico { background: rgba(126, 166, 255, .16); color: #9db8f5; }

/* 列表型内容 */
.feature-list { display: grid; gap: 11px; margin: 5px 0 0; padding: 0; list-style: none; }
.feature-list li { display: flex; align-items: flex-start; gap: 10px; min-width: 0; color: var(--muted); font-size: 14.5px; line-height: 1.55; }
.feature-list li::before { flex: 0 0 7px; width: 7px; height: 7px; margin-top: .55em; background: var(--blue); content: ""; }
.feature-list li strong { flex: 0 0 auto; color: var(--ink); font-weight: 700; white-space: nowrap; }
.feature-list li span { min-width: 0; }
.card-dark .feature-list li, .dark .feature-list li { color: #a9bcdf; }
.card-dark .feature-list li strong, .dark .feature-list li strong { color: #fff; }

/* 交付流程：用 flex 换行，让每一行自动居中 */
.steps, .steps-9, .steps-four { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; min-width: 0; }
.steps > *, .steps-9 > *, .steps-four > * { min-width: 0; flex: 0 0 calc((100% - 30px) / 4); }
.steps-9 > * { flex-basis: calc((100% - 40px) / 5); }
.step { display: flex; flex-direction: column; align-items: center; min-width: 0; padding: 18px 14px 14px; border: 1px solid var(--line); background: #fff; color: var(--ink); text-align: center; clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px)); }
.step .no { display: flex; align-items: center; justify-content: center; width: 30px; height: 30px; margin-bottom: 10px; background: var(--blue); color: #fff; font-size: 14px; font-weight: 800; line-height: 1; clip-path: polygon(0 0, calc(100% - 7px) 0, 100% 7px, 100% 100%, 7px 100%, 0 calc(100% - 7px)); }
.step h4 { width: 100%; min-height: 2.7em; margin-bottom: 4px; font-size: 15px; line-height: 1.35; }
.step p { width: 100%; color: var(--muted); font-size: 13.5px; line-height: 1.58; }
.step .days { display: inline-block; max-width: 100%; margin-top: auto; padding: 3px 5px; color: var(--blue-ink); background: rgba(43, 107, 255, .09); font-size: 12px; line-height: 1.3; white-space: nowrap; }
.dark .step h4 { color: var(--ink); }
.steps .step { min-height: 196px; }
.steps-9 .step { min-height: 160px; }
.steps-four .step { min-height: 0; }

/* 表格 */
.tbl { width: 100%; border-collapse: collapse; table-layout: fixed; background: #fff; line-height: 1.55; }
.tbl th { padding: 13px 18px; background: var(--blue-ink); color: #fff; font-size: 15px; font-weight: 700; line-height: 1.35; text-align: left; }
.tbl td { padding: 14px 18px; border-top: 1px solid var(--line); font-size: 14.5px; line-height: 1.55; text-align: left; vertical-align: top; text-wrap: normal; }
.table-scroll { width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; scrollbar-width: thin; }
.table-scroll .tbl th:nth-child(1), .table-scroll .tbl td:nth-child(1) { width: 18%; }
.table-scroll .tbl th:nth-child(2), .table-scroll .tbl td:nth-child(2) { width: 22%; }
.table-scroll .tbl th:nth-child(3), .table-scroll .tbl td:nth-child(3) { width: 34%; }
.table-scroll .tbl th:nth-child(4), .table-scroll .tbl td:nth-child(4) { width: 26%; }
.tbl .eff { color: var(--blue-deep); font-weight: 700; }
.chips { display: flex; flex-wrap: wrap; align-items: flex-start; gap: 6px; }
.chip { display: inline-block; padding: 3px 9px; color: var(--blue-ink); background: rgba(43, 107, 255, .08); font-size: 12.5px; line-height: 1.35; white-space: nowrap; clip-path: polygon(0 0, calc(100% - 6px) 0, 100% 6px, 100% 100%, 0 100%); }
.chip.amber { color: #a15c00; background: rgba(255, 157, 43, .14); }
.chip.green { color: #0c7a4b; background: rgba(23, 178, 106, .12); }
.table-result { display: block; color: var(--blue-deep); font-weight: 700; line-height: 1.45; }
.table-note { display: block; margin-top: 3px; color: var(--muted); font-size: .92em; font-weight: 500; line-height: 1.45; }

/* 数字带 */
.stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 22px; }
.stat { min-width: 0; padding: 26px 12px; border: 1px solid rgba(255, 255, 255, .12); background: rgba(255, 255, 255, .05); text-align: center; }
.stat .n { color: #fff; font-size: 42px; font-weight: 800; line-height: 1.1; white-space: nowrap; }
.stat .n small { font-size: 20px; }
.stat p { color: #a9bcdf; font-size: 14px; line-height: 1.45; }

/* QA、FAQ */
.qa { padding: 18px 22px; border: 1px solid var(--line); border-left: 3px solid var(--blue); background: #fff; }
.qa .q { min-height: 56px; color: var(--blue-ink); font-weight: 700; line-height: 1.45; }
.qa .a { margin-top: 6px; color: var(--muted); font-size: 14.5px; line-height: 1.6; }
details.faq-item { margin-bottom: 12px; border: 1px solid var(--line); background: #fff; }
details.faq-item summary { position: relative; cursor: pointer; padding: 16px 54px 16px 20px; font-size: 16px; font-weight: 700; line-height: 1.45; list-style: none; }
details.faq-item summary::-webkit-details-marker { display: none; }
details.faq-item summary::after { position: absolute; top: 50%; right: 20px; color: var(--blue); font-size: 20px; line-height: 1; content: "+"; transform: translateY(-50%); }
details.faq-item[open] summary::after { content: "–"; }
details.faq-item .faq-body { padding: 0 20px 18px; color: var(--muted); font-size: 14.5px; line-height: 1.65; }

/* 案例墙、案例卡、资源卡 */
.logo-wall { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 12px; }
.logo-item { padding: 17px 8px; border: 1px solid rgba(255, 255, 255, .14); background: rgba(255, 255, 255, .045); color: #d5e0f5; font-size: 15px; font-weight: 600; line-height: 1.35; letter-spacing: .02em; text-align: center; white-space: nowrap; clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px)); transition: background .15s ease, color .15s ease; }
.logo-item:hover { background: rgba(255, 255, 255, .09); color: #fff; }
.case-card h3 { font-size: 17px; }
.case-card .industry { margin-bottom: 8px; color: var(--blue); font-size: 12.5px; font-weight: 700; line-height: 1.35; letter-spacing: .04em; }
.resource-type { margin-bottom: 7px; color: var(--blue); font-size: 12.5px; font-weight: 700; line-height: 1.35; letter-spacing: .04em; }

/* 页脚、CTA、页头 */
.footer { padding: 56px 0 30px; background: var(--navy); color: #93a7cd; font-size: 14px; }
.footer a { color: #c4d3f2; }
.footer a:hover { color: #fff; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 34px; margin-bottom: 36px; }
.footer h4 { margin-bottom: 14px; color: #fff; font-size: 15px; }
.footer li { margin-bottom: 9px; list-style: none; line-height: 1.6; }
.footer p { line-height: 1.6; }
.footer a[href^="mailto"] { overflow-wrap: anywhere; }
.footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; padding-top: 22px; border-top: 1px solid rgba(255, 255, 255, .12); color: #6f83ab; font-size: 12.5px; line-height: 1.45; }
.cta-band { padding: 58px 0; background: linear-gradient(140deg, var(--blue) 0%, var(--blue-ink) 100%); color: #fff; clip-path: polygon(0 26px, 26px 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%); }
.cta-band h2 { margin-bottom: 10px; }
.cta-band p { color: #dbe7ff; line-height: 1.55; }
.page-head { padding: 52px 0 46px; background: linear-gradient(180deg, #f7faff, #eef3fd); clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), 0 100%); }
.page-head h1 { max-width: 760px; max-width: var(--measure-reading); font-size: clamp(30px, 3.2vw, 36px); }
.page-head .sub { max-width: 760px; max-width: var(--measure-reading); }
.crumb { margin-bottom: 12px; color: var(--muted); font-size: 13px; line-height: 1.4; }
.crumb a { color: var(--muted); }
.page-sub { display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px 16px; }
.page-tags { color: var(--blue-ink); font-weight: 700; }
.page-tagline { color: var(--muted); }

/* 二维码弹窗、全景图灯箱 */
.qr-modal { position: fixed; inset: 0; z-index: 100; display: none; align-items: center; justify-content: center; padding: 20px; background: rgba(11, 23, 48, .62); }
.qr-modal.open { display: flex; }
.qr-dialog { position: relative; width: 100%; max-width: 330px; padding: 34px 36px 28px; background: #fff; text-align: center; clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px)); box-shadow: 0 30px 80px rgba(0, 0, 0, .35); }
.qr-dialog img { width: min(240px, 100%); margin: 0 auto 18px; }
.qr-dialog h3 { margin-bottom: 6px; font-size: 19px; }
.qr-dialog p { color: var(--muted); font-size: 13.5px; }
.qr-close { position: absolute; top: 8px; right: 14px; border: 0; background: none; color: var(--muted); font-size: 24px; line-height: 1; cursor: pointer; }
.qr-close:hover { color: var(--ink); }
.poster-frame { max-width: 860px; margin-right: auto; margin-left: auto; padding: 14px; border: 1px solid var(--line); background: #fff; box-shadow: var(--shadow); clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px)); }
.poster-frame img { width: 100%; }
.subnav { position: sticky; top: 64px; z-index: 40; border-bottom: 1px solid var(--line); background: rgba(255, 255, 255, .96); backdrop-filter: blur(8px); }
.subnav-inner { display: flex; gap: 26px; overflow-x: auto; scrollbar-width: thin; }
.subnav a { padding: 12px 2px; color: var(--muted); font-size: 14px; line-height: 1.35; white-space: nowrap; border-bottom: 2px solid transparent; }
.subnav a:hover, .subnav a.active { color: var(--blue); }
.subnav a.active { font-weight: 600; border-bottom-color: var(--blue); }
[id] { scroll-margin-top: 118px; }
.lb-modal { position: fixed; inset: 0; z-index: 110; display: none; overflow-y: auto; padding: 48px 16px; background: rgba(11, 23, 48, .82); }
.lb-modal.open { display: block; }
.lb-inner { max-width: 860px; margin: 0 auto; padding: 10px; background: #fff; clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px)); box-shadow: 0 30px 80px rgba(0, 0, 0, .4); }
.lb-inner img { width: 100%; }
.lb-close { position: fixed; top: 16px; right: 22px; width: 44px; height: 44px; border: 0; background: rgba(255, 255, 255, .14); color: #fff; font-size: 26px; line-height: 1; cursor: pointer; }
.lb-close:hover { background: rgba(255, 255, 255, .26); }

a.card[onclick] { display: block; cursor: pointer; }

/* 1020px：收窄大网格，但保持步骤可读 */
@media (max-width: 1020px) {
  .nav-links { display: none; }
  .nav-burger { display: block; }
  .nav.open .nav-links { position: absolute; top: 64px; right: 0; left: 0; display: flex; flex-direction: column; align-items: flex-start; gap: 0; padding: 12px 24px 18px; border-bottom: 1px solid var(--line); background: #fff; }
  .hero-grid { grid-template-columns: 1fr; }
  .grid-3, .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .logo-wall { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .steps > * { flex-basis: calc((100% - 30px) / 4); }
  .steps-9 > * { flex-basis: calc((100% - 40px) / 5); }
}

/* 900px：行业表格直接转服务条目，避免平板横拖 */
@media (max-width: 900px) {
  .table-scroll { overflow: visible; }
  .table-scroll .tbl { display: block; width: 100%; min-width: 0; border: 0; background: transparent; }
  .table-scroll .tbl thead { display: none; }
  .table-scroll .tbl tbody { display: block; }
  .table-scroll .tbl tr { display: block; margin: 0 0 12px; padding: 16px 18px; border: 1px solid var(--line); background: #fff; clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%); }
  .table-scroll .tbl td { display: grid; grid-template-columns: 92px minmax(0, 1fr); gap: 12px; width: 100% !important; padding: 8px 0; border-top: 1px solid var(--line); font-size: 14px; }
  .table-scroll .tbl td:first-child { display: block; padding-top: 0; padding-bottom: 10px; border-top: 0; color: var(--ink); font-size: 16px; font-weight: 700; }
  .table-scroll .tbl td::before { color: var(--muted); font-size: 12.5px; font-weight: 600; line-height: 1.55; content: attr(data-label); }
  .table-scroll .tbl td:first-child::before { display: none; }
}

/* 760px：流程两列，最后一张卡居中；页头关键词分层 */
@media (max-width: 760px) {
  .wrap { padding-right: 20px; padding-left: 20px; }
  .steps, .steps-9 { gap: 10px; }
  .steps > *, .steps-9 > *, .steps-four > * { flex-basis: calc((100% - 10px) / 2); }
  .steps-four > * { flex-basis: calc((100% - 10px) / 2); }
  .step { min-height: 0 !important; padding: 16px 12px 13px; }
  .step h4 { min-height: 2.7em; }
  .page-sub { display: block; }
  .page-tags, .page-tagline { display: block; white-space: normal; }
  .page-tagline { margin-top: 4px; }
}

/* 640px：手机用单列内容卡、双列品牌/数字，页脚单列 */
@media (max-width: 640px) {
  .section { padding: 54px 0; }
  .hero { padding: 56px 0 66px; }
  .hero h1 { font-size: 30px; }
  .hero .lede { font-size: 16px; }
  .hero-actions { width: 100%; gap: 10px; }
  .hero-actions .btn { flex-basis: 100%; text-align: center; }
  .hero-panel { padding: 28px 24px; }
  .hero-panel .row { gap: 14px; }
  .hero-panel .row.panel-stats-actions { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero-panel .row.panel-stats-actions > :last-child { grid-column: 1 / -1; justify-self: start; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 22px; }
  .logo-wall { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .logo-item { padding-right: 5px; padding-left: 5px; font-size: 14px; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
  .stat { padding: 20px 10px; }
  .stat .n { font-size: 34px; }
  .cta-band h2 { max-width: 340px; margin-right: auto; margin-left: auto; }
  .btn-group .btn { flex: 1 1 auto; text-align: center; }
  .subnav-inner { gap: 22px; }
  .subnav a { padding: 11px 0; }
  .qr-dialog { padding-right: 24px; padding-left: 24px; }
  .table-scroll .tbl td { grid-template-columns: 82px minmax(0, 1fr); }
}

@media (max-width: 380px) {
  .wrap { padding-right: 18px; padding-left: 18px; }
  .hero h1 { font-size: 28px; }
  .hero-panel .num { font-size: 34px; }
  .hero-panel .num small { font-size: 14px; }
  .stat .n { font-size: 30px; }
  .table-scroll .tbl td { grid-template-columns: 76px minmax(0, 1fr); }
}