@font-face {
  font-family: "Archivo";
  src: url("assets/fonts/archivo-vf.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("assets/fonts/plexmono-400.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("assets/fonts/plexmono-500.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("assets/fonts/plexmono-600.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

:root {
  --brand: #218F82;
  --brand-600: #14655C;
  --brand-700: #14655C;
  --brand-800: #0F4F48;
  --brand-tint: #F1F7F6;
  --brand-line: rgba(20, 101, 92, 0.2);
  --ink: #141918;
  --body: #303735;
  --muted: #5B6462;
  --faint: #929995;
  --white: #FFFFFF;
  --soft-bg: #F1F7F6;
  --paper: #FFFFFF;
  --line: rgba(20, 25, 24, 0.14);
  /* V2 商务化 token（新增，不替换旧 token） */
  --brand-deep: #0A4A40;
  --brand-2: #0F6B5C;
  --accent: #B98A4B;
  --accent-soft: #F3EADB;
  --bg-cool: #F5F7F6;
  --bg-cool-2: #ECF0EE;
  --ink-2: #10211E;
  --font-display: "Archivo", "Noto Sans SC", "Source Han Sans SC",
    "PingFang SC", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --font-sans: "Noto Sans SC", "Source Han Sans SC", "Microsoft YaHei",
    "PingFang SC", sans-serif;
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC",
    "STSong", serif;
  --font: var(--font-sans);
  --wrap: 1440px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --dur: 0.36s;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  color: var(--body);
  background: var(--white);
  font: 16px/1.75 var(--font);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.menu-open {
  overflow: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

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

button,
input {
  font: inherit;
}

button {
  color: inherit;
}

h1,
h2,
h3,
h4,
p,
ul,
ol,
figure,
blockquote {
  margin-top: 0;
}

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

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  padding: 10px 16px;
  color: var(--white);
  background: var(--brand-700);
  transform: translateY(-160%);
  transition: transform 0.2s;
}

.skip-link:focus {
  transform: translateY(0);
}

.wrap {
  width: min(calc(100% - 112px), var(--wrap));
  margin-inline: auto;
}

.reading {
  max-width: 720px;
}

.section {
  position: relative;
  padding: clamp(112px, 10vw, 168px) 0;
}

/* A.07：section 节奏三档。--lg 用于高潮段（首屏后、诊断、CTA），
   --md 用于紧凑段（特色 / 亮点 / 适用对象），默认档用于主内容段。 */
.section--lg {
  padding: clamp(148px, 13.5vw, 216px) 0;
}

.section--md {
  padding: clamp(88px, 7.5vw, 124px) 0;
}

.section--soft {
  background: var(--soft-bg);
}

.section--paper {
  background: var(--paper);
}

.section--dark {
  color: var(--white);
  background: var(--brand-700);
}

.section--dark .section-title,
.section--dark h2,
.section--dark h3 {
  color: var(--white);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 22px;
  color: var(--brand-600);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.eyebrow::before {
  width: 3px;
  height: 22px;
  background: var(--brand);
  content: "";
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(300px, 4fr);
  gap: clamp(48px, 7vw, 112px);
  align-items: end;
  margin-bottom: clamp(64px, 7vw, 104px);
}

.section-head--center {
  display: block;
  max-width: 760px;
  margin-right: auto;
  margin-bottom: 56px;
  margin-left: auto;
  text-align: center;
}

.section-title {
  margin-bottom: 0;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: clamp(58px, 5.6vw, 88px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.section-desc {
  max-width: 720px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.9;
}

.section--dark .section-desc {
  color: rgba(255, 255, 255, 0.72);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 50px;
  padding: 11px 30px;
  border: 1px solid transparent;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: color var(--dur), background var(--dur), border-color var(--dur),
    transform var(--dur), box-shadow var(--dur);
}

.btn::after {
  content: "→";
  transition: transform var(--dur) var(--ease);
}

.btn:hover::after {
  transform: translateX(5px);
}

.btn-primary {
  color: var(--white);
  background: var(--brand);
}

.btn-primary:hover {
  background: var(--brand-600);
  box-shadow: 0 12px 28px rgba(33, 145, 135, 0.22);
  transform: translateY(-2px);
}

.btn-outline {
  color: var(--brand-600);
  border-color: var(--brand);
  background: transparent;
}

.btn-outline:hover {
  color: var(--white);
  background: var(--brand);
}

.btn-light {
  color: var(--brand-700);
  background: var(--white);
}

.btn-light:hover {
  background: var(--brand-tint);
  transform: translateY(-2px);
}

/* ==========================================================
   HEADER —— 全站唯一定义。
   禁止在 inner.css / home-design.css / 页面内 <style> 中覆盖。
   新增 header 相关规则一律写在本围栏内。
   ========================================================== */

/* 3.2 变量 */
:root {
  --nav-h: 72px;
  --nav-font: 15px;
  --nav-weight: 500;
  --nav-gap: 40px;
  --nav-brand-size: 17px;
  --gut: 64px;                           /* 左右外边距，品牌字与内容共用同一条栅格线 */
  --motion-ease: cubic-bezier(.16, 1, .3, 1);
}

@media (max-width: 768px) {
  :root {
    --nav-h: 60px;
  }
}

/* 3.3 基础态与滚动态（恒定高度，无滚动收缩；过渡只含底色） */
.top-header {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  z-index: 100;
  height: var(--nav-h);
  color: var(--ink);
  background-color: #fff;
  transition: background-color 300ms var(--motion-ease);
}

.top-header.is-scrolled,
.top-header[data-mega-open="true"],
body.menu-open .top-header {
  color: var(--ink);
  background-color: #fff;
}

/* 3.4 首页顶部透明态：仅由 body[data-hero="dark"] 驱动 */
body[data-hero="dark"] .top-header:not(.is-scrolled):not([data-mega-open="true"]) {
  color: #fff;
  background-color: transparent;
}

.nav-inner {
  height: 100%;
  padding: 0 var(--gut);          /* 固定 64px 外边距，9 页一致、与页面栅格对齐 */
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  position: relative;
  z-index: 105;
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  gap: 0;
}

/* 3.7 品牌 wordmark：纯文字，17px / 600 / #218F82 / .04em，无方块图标 */
.brand-word {
  color: #218F82;
  font-size: var(--nav-brand-size);
  font-weight: 600;
  letter-spacing: .04em;
  white-space: nowrap;
  transition: color 300ms var(--motion-ease);
}

/* 品牌横版 logo：assets/brand/mota-logo-horizontal.svg
   header / footer 统一高度 28px（单一来源，两侧视觉一致） */
.brand-mark {
  display: block;
  height: 28px;
  width: auto;
  transition: filter 300ms var(--motion-ease);
}
body[data-hero="dark"] .top-header:not(.is-scrolled):not([data-mega-open="true"]) .brand-mark {
  filter: brightness(0) invert(1);
}

body[data-hero="dark"] .top-header:not(.is-scrolled):not([data-mega-open="true"]) .brand-word {
  color: #fff;
}

.nav-menu {
  position: relative;
  display: flex;
  height: 100%;
  align-items: center;
  gap: var(--nav-gap);
  margin: 0;
}

.nav-group {
  display: flex;
  height: 100%;
  align-items: center;
}

/* 3.5 导航链接：height 100% 的 flex 项，状态仅以文字颜色标识 */
.nav-menu a {
  position: relative;
  height: 100%;
  display: flex;
  align-items: center;
  color: #111312;
  font-size: var(--nav-font);
  font-weight: var(--nav-weight);
  letter-spacing: 0;
  text-decoration: none;
  transition: color 240ms var(--motion-ease);
}

/* 3.6 状态：默认 #111312 → 悬停 #218F82 → 当前页 #218F82。无下划线、无边框、无背景 */
.nav-menu a:hover,
.nav-menu a:focus-visible {
  color: #218F82;
}

/* 当前页：仅文字变色标识 */
.nav-menu a[aria-current="page"] {
  color: #218F82;
}

/* 覆盖 common.js markMobileReveal 给导航链接加的 data-reveal 进场动画：
   导航项不做任何淡入/位移/长过渡，与效果稿一致（抽屉开合逻辑不受影响） */
.top-header .nav-menu a[data-reveal] {
  opacity: 1 !important;
  transform: none !important;
  transition: color 240ms var(--motion-ease) !important;
}
/* 标杆案例的 .nav-group 由 common.js 在内联 reveal 脚本之后动态生成，
   内联 reveal 脚本已观察不到它，需要 CSS 直接兜底为可见。
   index.html 由 home-design.js 后观察可以加 is-visible，本规则覆盖全部页面。 */
.top-header .nav-group[data-reveal] {
  opacity: 1 !important;
  transform: none !important;
  transition: none !important;
}

/* 首页顶部透明态：导航文字 88% 白、hover 纯白 */
body[data-hero="dark"] .top-header:not(.is-scrolled):not([data-mega-open="true"]) .nav-menu a {
  color: rgba(255, 255, 255, 0.88);
}

body[data-hero="dark"] .top-header:not(.is-scrolled):not([data-mega-open="true"]) .nav-menu a:hover,
body[data-hero="dark"] .top-header:not(.is-scrolled):not([data-mega-open="true"]) .nav-menu a:focus-visible {
  color: #fff;
}

body[data-hero="dark"] .top-header:not(.is-scrolled):not([data-mega-open="true"]) .nav-menu a[aria-current="page"] {
  color: #fff;
}

.hamburger {
  position: relative;
  z-index: 105;
  display: none;
  width: 46px;
  height: 46px;
  padding: 10px 7px;
  border: 0;
  color: currentColor;
  background: transparent;
  cursor: pointer;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  margin: 6px 0;
  background: currentColor;
  transition: transform var(--dur), opacity var(--dur);
}

.hamburger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.hamburger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.hamburger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

.nav-overlay {
  position: fixed;
  z-index: 90;
  inset: 0;
  visibility: hidden;
  background: rgba(7, 38, 34, 0.42);
  opacity: 0;
  transition: opacity var(--dur), visibility var(--dur);
}

.nav-overlay.open {
  visibility: visible;
  opacity: 1;
}

.mobile-nav-toggle,
.mobile-subnav {
  display: none;
}

/* 单行下拉面板：全站唯一（标杆案例三案例名横排居中，无标题/描述/编号/CTA）。
   基准 = case.html 单行面板；定位相对 header（left:0/right:0），修正旧实现 left:50%+width:100vw 的桌面横向溢出 */
.mega-panel {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  height: 96px;
  background: #fff;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  visibility: hidden;
  opacity: 0;
  transition: opacity 200ms linear, visibility 0s linear 200ms;
  pointer-events: none;
}

.top-header[data-mega-open="true"] .mega-panel {
  visibility: visible;
  opacity: 1;
  transition-delay: 0s;
  pointer-events: auto;
}

.mega-panel__inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 72px;
  height: 100%;
}

.mega-panel a {
  position: relative;
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  padding-bottom: 6px;
  transition: color 240ms var(--motion-ease);
}

.mega-panel a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--brand);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 240ms var(--motion-ease);
}

.mega-panel a:hover,
.mega-panel a:focus-visible {
  color: var(--brand);
}

.mega-panel a:hover::after,
.mega-panel a:focus-visible::after {
  transform: scaleX(1);
}

@media (max-width: 1024px) and (min-width: 769px) {
  .nav-menu {
    gap: 24px;
  }

  .nav-group > a,
  .nav-menu > a {
    font-size: 14px;
  }
}

@media (max-width: 768px) {
  .nav-inner {
    width: calc(100% - 40px);
  }

  .hamburger {
    display: block;
  }

  .mega-panel {
    display: none;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: 0;
    left: auto;
    z-index: 95;
    display: block;
    width: 100vw;
    height: 100dvh;
    margin: 0;
    padding: 88px 20px 32px;
    overflow-y: auto;
    color: var(--body);
    background: var(--white);
    transform: translateX(110%);
    transition: transform var(--dur) var(--ease);
  }

  .nav-menu.open {
    transform: translateX(0);
  }

  .nav-menu > a,
  .nav-group {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 260ms var(--ease), transform 300ms var(--ease);
    transition-delay: var(--reveal-delay, 0ms);
  }

  .nav-menu.open > a,
  .nav-menu.open .nav-group {
    opacity: 1;
    transform: none;
  }

  .nav-menu > a {
    display: flex;
    height: auto;               /* 覆盖桌面 height:100%，逐项一行 */
    min-height: 60px;
    border-bottom: 1px solid var(--line);
    font-size: 18px;
    font-weight: 700;
  }

  .nav-group {
    display: grid;
    height: auto;
    grid-template-columns: minmax(0, 1fr) 54px;
    border-bottom: 1px solid var(--line);
  }

  .nav-group > a {
    height: auto;               /* 覆盖桌面 height:100% */
    min-height: 60px;
    border: 0;
    font-size: 18px;
    font-weight: 700;
  }

  .mobile-nav-toggle {
    display: grid;
    width: 54px;
    min-height: 60px;
    padding: 0;
    border: 0;
    place-items: center;
    color: var(--brand-600);
    background: transparent;
    cursor: pointer;
  }

  .mobile-nav-toggle span {
    display: block;
    font-size: 24px;
    transition: transform var(--dur) var(--ease);
  }

  .mobile-nav-toggle[aria-expanded="true"] span {
    transform: rotate(45deg);
  }

  .mobile-subnav {
    display: none;
    grid-column: 1 / -1;
    padding: 4px 0 18px 20px;
  }

  .nav-group.subnav-open .mobile-subnav {
    display: grid;
  }

  .mobile-subnav a {
    min-height: 46px;
    border: 0;
    color: var(--muted);
    font-size: 15px;
    font-weight: 500;
  }
}

@media (prefers-reduced-motion: reduce) {
  .top-header,
  .brand-word,
  .nav-menu a,
  .nav-menu a::after,
  .mega-panel,
  .mega-panel a,
  .mega-panel a::after,
  .nav-menu > a,
  .nav-group {
    transition: none !important;
  }
  /* 压过上方"导航链接不做 reveal 动画"的 240ms color 过渡（同特异性，后定义胜出） */
  .top-header .nav-menu a[data-reveal] {
    transition: none !important;
  }
}

.page-hero {
  position: relative;
  display: flex;
  min-height: 60svh;
  align-items: center;
  padding: calc(var(--nav-h) + 80px) 0 92px;
  overflow: hidden;
  color: var(--ink);
  background: var(--soft-bg);
}

.page-hero::after {
  position: absolute;
  right: -140px;
  bottom: -250px;
  width: 520px;
  height: 520px;
  border: 1px solid var(--brand-line);
  border-radius: 50%;
  box-shadow: 0 0 0 60px rgba(33, 145, 135, 0.025),
    0 0 0 120px rgba(33, 145, 135, 0.015);
  content: "";
}

.page-hero .wrap {
  position: relative;
  z-index: 2;
}

.page-hero h1 {
  max-width: 900px;
  margin-bottom: 24px;
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: clamp(64px, 6.1vw, 96px);
  font-weight: 800;
  line-height: 1.04;
  letter-spacing: -0.04em;
}

.page-hero p {
  max-width: 700px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.9;
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.75s var(--ease), transform 0.75s var(--ease);
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

.delay-1 {
  transition-delay: 0.1s;
}

.delay-2 {
  transition-delay: 0.2s;
}

.delay-3 {
  transition-delay: 0.3s;
}

.footer {
  padding: 74px 0 30px;
  color: rgba(255, 255, 255, 0.72);
  background: var(--brand-800);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 56px;
  padding-bottom: 48px;
}

.footer .brand-logo {
  color: var(--white);
}

/* 页脚品牌位：与 header 同高（继承 .brand-mark 28px），白底保持品牌色 */
.brand-mark--footer {
  display: block;
}

.footer-copy {
  max-width: 360px;
  margin-top: 18px;
  margin-bottom: 0;
  font-size: 14px;
}

.footer h2 {
  margin-bottom: 18px;
  color: var(--white);
  font-size: 15px;
  letter-spacing: 0.1em;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 20px;
}

.footer-links a {
  font-size: 14px;
  transition: color var(--dur);
}

.footer-links a:hover {
  color: var(--white);
}

.footer-address {
  margin-bottom: 0;
  font-size: 14px;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-top: 26px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.46);
  font-size: 12px;
}

.footer-records {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.to-top {
  position: fixed;
  right: 26px;
  bottom: 26px;
  z-index: 80;
  display: grid;
  visibility: hidden;
  width: 48px;
  height: 48px;
  border: 1px solid var(--brand-line);
  place-items: center;
  color: var(--brand-600);
  background: var(--white);
  box-shadow: 0 10px 26px rgba(10, 52, 48, 0.1);
  cursor: pointer;
  opacity: 0;
  transform: translateY(12px);
  transition: color var(--dur), background var(--dur), opacity var(--dur),
    transform var(--dur), visibility var(--dur);
}

.to-top.show {
  visibility: visible;
  opacity: 1;
  transform: none;
}

.to-top:hover {
  color: var(--white);
  background: var(--brand);
}

:focus-visible {
  outline: 3px solid rgba(33, 145, 135, 0.45);
  outline-offset: 4px;
}

@media (max-width: 1024px) {
  .section-head {
    gap: 40px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .footer-brand-column {
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {
  .wrap {
    width: min(calc(100% - 40px), var(--wrap));
  }

  .section {
    padding: 70px 0;
  }

  .section-head {
    display: block;
    margin-bottom: 38px;
  }

  .section-head .section-desc {
    margin-top: 16px;
  }

  .section-head--center {
    margin-bottom: 38px;
    text-align: left;
  }

  .section-title {
    font-size: clamp(28px, 9vw, 38px);
  }

  .page-hero {
    min-height: 56svh;
    padding: calc(var(--nav-h) + 66px) 0 68px;
  }

  .page-hero h1 {
    font-size: clamp(36px, 11vw, 48px);
  }

  .page-hero p {
    font-size: 17px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .footer-brand-column {
    grid-column: auto;
  }

  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
  }

  .to-top {
    right: 18px;
    bottom: 18px;
  }
}

/* 案例列表 */
.partner-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
  background: var(--white);
}

.partner-grid figure {
  display: grid;
  min-height: 118px;
  margin: 0;
  padding: 22px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  place-items: center;
}

.partner-grid img {
  width: auto;
  max-width: 90%;
  max-height: 62px;
  object-fit: contain;
  filter: saturate(0.82);
}

@media (max-width: 1024px) {
  .partner-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .partner-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .partner-grid figure {
    min-height: 96px;
    padding: 14px;
  }
}

/* 案例详情 */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* 首页 */
.home-hero {
  position: relative;
  display: flex;
  min-height: 92svh;
  align-items: center;
  overflow: hidden;
  color: var(--white);
  background: linear-gradient(145deg, var(--brand-700), var(--brand-800));
}

.home-hero::after {
  position: absolute;
  right: -15vw;
  bottom: -50vh;
  width: 70vw;
  height: 70vw;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 50%;
  box-shadow: 0 0 0 70px rgba(255, 255, 255, 0.025),
    0 0 0 140px rgba(255, 255, 255, 0.016);
  content: "";
}

.home-hero-grid {
  position: absolute;
  inset: 0;
  opacity: 0.34;
  background-image: linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(to right, black, transparent 82%);
}

.home-hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(260px, 0.65fr);
  gap: 90px;
  align-items: end;
  padding: calc(var(--nav-h) + 90px) 0 110px;
}

.home-hero-kicker {
  display: inline-block;
  margin-bottom: 24px;
  color: rgba(255, 255, 255, 0.68);
  font-size: 14px;
  letter-spacing: 0.24em;
}

.home-hero h1 {
  max-width: 780px;
  margin-bottom: 30px;
  color: var(--white);
  font-size: clamp(54px, 7.4vw, 92px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: 0.035em;
}

.home-hero-copy > p {
  max-width: 650px;
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.72);
  font-size: 18px;
}

.home-hero-actions {
  display: flex;
  align-items: center;
  gap: 28px;
  margin-top: 38px;
}

.home-text-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  gap: 10px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 15px;
}

.home-text-link::after {
  position: absolute;
  right: 0;
  bottom: 4px;
  left: 0;
  height: 1px;
  background: rgba(255, 255, 255, 0.4);
  content: "";
}

.home-hero-statement {
  display: grid;
  gap: 14px;
  padding: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.24);
  border-bottom: 1px solid rgba(255, 255, 255, 0.24);
  color: rgba(255, 255, 255, 0.76);
  font-size: 18px;
  letter-spacing: 0.08em;
}

.home-hero-statement i {
  width: 1px;
  height: 26px;
  margin-left: 5px;
  background: var(--brand);
}

.home-service-flow {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 2px solid var(--brand);
  border-bottom: 1px solid var(--line);
}

.home-service-pillar {
  position: relative;
  min-height: 350px;
  padding: 36px 36px 42px;
  border-right: 1px solid var(--line);
  background: var(--white);
  transition: color var(--dur), background var(--dur), transform var(--dur),
    box-shadow var(--dur);
}

.home-service-pillar::before {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 3px;
  background: var(--brand-2);
  content: "";
  opacity: 0;
  transition: opacity var(--dur);
}

.home-service-pillar:last-child {
  border-right: 0;
}

.home-service-pillar:hover {
  color: var(--ink);
  background: var(--soft-bg);
  transform: translateY(-6px);
  box-shadow: 0 18px 44px rgba(10, 74, 64, 0.08);
}

.home-service-pillar:hover::before {
  opacity: 1;
}

.home-service-icon {
  display: block;
  width: 34px;
  height: 34px;
  margin-top: 8px;
  color: var(--brand-2);
}

.home-service-count {
  display: block;
  margin-top: 26px;
  color: var(--brand);
  font-family: var(--font-mono);
  font-size: 44px;
  font-weight: 600;
  line-height: 1;
  font-variant-numeric: lining-nums tabular-nums;
}

.home-service-pillar h3 {
  margin: 20px 0 12px;
  color: inherit;
  font-size: 22px;
}

.home-service-pillar p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 15px;
}

.home-service-pillar:hover p {
  color: var(--muted);
}

.home-service-end {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 22px;
  margin-top: 30px;
  color: var(--brand-700);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.16em;
}

.home-service-end i {
  width: 100px;
  height: 1px;
  background: var(--brand);
}

.section-action {
  margin-top: 44px;
  text-align: center;
}

.brand-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.brand-item {
  position: relative;
  min-width: 0;
  min-height: 310px;
  padding: 26px 24px 30px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
  transition: background var(--dur), box-shadow var(--dur), transform var(--dur);
}

.brand-item--linked:hover {
  z-index: 2;
  background: var(--white);
  box-shadow: 0 18px 44px rgba(10, 52, 48, 0.1);
  transform: translateY(-5px);
}

.brand-logo-frame {
  display: grid;
  height: 82px;
  margin-bottom: 24px;
  place-items: center;
  border-bottom: 1px solid var(--line);
}

.brand-logo-frame img {
  width: auto;
  max-width: 88%;
  max-height: 58px;
  object-fit: contain;
}

.brand-item-number {
  color: var(--brand-600);
  font-size: 12px;
}

.brand-item h3 {
  margin: 8px 0;
  color: var(--ink);
  font-size: 19px;
}

.brand-item p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.65;
}

.brand-item-link {
  display: inline-block;
  margin-top: 16px;
  color: var(--brand-600);
  font-size: 13px;
  font-weight: 600;
}

.home-about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.72fr);
  gap: 90px;
  align-items: center;
}

.home-about-copy > p {
  max-width: 720px;
  margin: 24px 0;
  color: var(--muted);
  line-height: 2;
}

.home-founder {
  position: relative;
  margin-bottom: 0;
}

.home-founder::before {
  position: absolute;
  top: -18px;
  right: 18px;
  bottom: 18px;
  left: -18px;
  z-index: -1;
  background: var(--brand-tint);
  content: "";
}

.home-founder img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  object-position: center top;
}

.home-founder figcaption {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 24px;
  color: var(--white);
  background: rgba(10, 52, 48, 0.9);
}

.home-founder figcaption strong {
  font-size: 20px;
}

.home-founder figcaption span {
  font-size: 13px;
}

.home-contact {
  overflow: hidden;
}

.home-contact::after {
  position: absolute;
  top: -280px;
  right: -180px;
  width: 620px;
  height: 620px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 50%;
  content: "";
}

.home-contact-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 100px;
  align-items: start;
}

.home-contact-label {
  color: rgba(255, 255, 255, 0.62);
  font-size: 13px;
  letter-spacing: 0.18em;
}

.home-contact h2 {
  margin: 18px 0;
  font-size: clamp(38px, 5vw, 58px);
  line-height: 1.2;
}

.home-contact p {
  color: rgba(255, 255, 255, 0.7);
}

.home-contact-list {
  margin: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.home-contact-list > div {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 24px;
  padding: 17px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
}

.home-contact-list dt {
  color: rgba(255, 255, 255, 0.5);
  font-size: 13px;
}

.home-contact-list dd {
  margin: 0;
  color: rgba(255, 255, 255, 0.9);
}

.home-contact-list .home-contact-action {
  display: block;
  padding-top: 28px;
  border-bottom: 0;
}

@media (max-width: 1024px) {
  .home-hero-inner {
    grid-template-columns: 1fr;
    gap: 54px;
  }

  .home-hero-statement {
    max-width: 460px;
    grid-template-columns: auto 26px auto 26px auto;
    align-items: center;
  }

  .home-hero-statement i {
    width: 26px;
    height: 1px;
    margin-left: 0;
  }

  .brand-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .home-about-grid {
    gap: 56px;
  }
}

@media (max-width: 768px) {
  .home-hero {
    min-height: 86svh;
  }

  .home-hero-inner {
    padding: calc(var(--nav-h) + 70px) 0 72px;
  }

  .home-hero h1 {
    font-size: clamp(46px, 14vw, 62px);
  }

  .home-hero-actions {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
  }

  .home-hero-statement {
    display: none;
  }

  .home-service-flow {
    grid-template-columns: 1fr;
  }

  .home-service-pillar {
    min-height: auto;
    padding: 30px 26px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .home-service-count {
    margin-top: 20px;
    font-size: 38px;
  }

  .home-service-end i {
    width: 44px;
  }

  .brand-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .brand-item {
    min-height: 290px;
    padding: 20px 16px 24px;
  }

  .brand-logo-frame {
    height: 72px;
  }

  .home-about-grid,
  .home-contact-grid {
    grid-template-columns: 1fr;
    gap: 54px;
  }

  .home-founder {
    margin-left: 18px;
  }

  .home-contact-list > div {
    grid-template-columns: 72px 1fr;
    gap: 16px;
  }
}

@media (max-width: 430px) {
  .brand-grid {
    grid-template-columns: 1fr;
  }

  .brand-item {
    min-height: auto;
  }
}

/* ── First strategy camp ─────────────────────────────────────────────── */
.camp-hero {
  position: relative;
  min-height: 600px;
  padding: calc(var(--nav-h) + 80px) 0 80px;
  overflow: hidden;
  color: var(--white);
  background: linear-gradient(125deg, #073c38 0%, var(--brand-700) 56%, #176e67 100%);
}

.camp-hero::after {
  position: absolute;
  right: -120px;
  bottom: -210px;
  width: 570px;
  height: 570px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  box-shadow: 0 0 0 70px rgba(255, 255, 255, 0.025),
    0 0 0 140px rgba(255, 255, 255, 0.018);
  content: "";
}

/* V27：移除 .camp-hero-grid 节点（首屏改纯绿底），保留选择器以防其它页面残留引用但留空 */

.camp-hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(330px, 0.6fr);
  gap: 100px;
  align-items: center;
}

.camp-kicker,
.camp-dark-label,
.contact-kicker {
  display: inline-block;
  margin-bottom: 22px;
  color: rgba(255, 255, 255, 0.64);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.2em;
}

.camp-hero h1 {
  margin-bottom: 26px;
  font-size: clamp(44px, 5.5vw, 72px);
  line-height: 1.17;
  letter-spacing: 0.02em;
}

.camp-hero h1 small {
  position: relative;
  display: block;
  margin-top: 26px;
  padding-left: 64px;
  color: rgba(255, 255, 255, 0.8);
  font-size: clamp(21px, 2.2vw, 30px);
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: 0.04em;
}

.camp-hero h1 small::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 46px;
  height: 1px;
  background: rgba(255, 255, 255, 0.42);
}

.camp-hero-copy > p {
  color: rgba(255, 255, 255, 0.74);
  font-size: 19px;
}

.camp-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 36px;
}

.camp-meta span {
  padding: 7px 13px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: rgba(255, 255, 255, 0.82);
  background: rgba(255, 255, 255, 0.06);
  font-size: 12px;
}

.camp-hero-card {
  padding: 42px 30px 32px;
  border: 1px solid rgba(255, 255, 255, 0.17);
  background: rgba(255, 255, 255, 0.07);
  text-align: center;
  backdrop-filter: blur(12px);
}

.camp-hero-card > strong {
  display: block;
  margin-bottom: 4px;
  font-size: 72px;
  line-height: 1;
}

.camp-hero-card > strong small {
  margin-left: 4px;
  font-size: 22px;
}

.camp-hero-card > p {
  margin-bottom: 28px;
  color: rgba(255, 255, 255, 0.58);
  font-size: 13px;
}

.camp-hero-card > div {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.camp-hero-card > div span {
  display: flex;
  min-width: 0;
  padding: 12px 4px;
  border: 1px solid rgba(255, 255, 255, 0.13);
  flex-direction: column;
  color: rgba(255, 255, 255, 0.62);
  font-size: 11px;
}

.camp-hero-card b {
  color: var(--white);
  font-size: 25px;
  line-height: 1.25;
}

/* A.04：3 列等分 + 中央 translateY(-12px) 实心卡 → 纵向楼层时间轴。
   删掉"奖杯式"抬升与实心填充，改用编号左槽 + 主阶段 brand-tint 底纹做视觉锚点。 */
.camp-phase-track {
  display: block;
  border-top: 1px solid var(--line);
}

.camp-phase-track > i {
  display: none;
}

.camp-phase {
  position: relative;
  min-height: 0;
  padding: 34px 28px 34px 132px;
  border-bottom: 1px solid var(--line);
  background: transparent;
}

.camp-phase--primary {
  color: var(--ink);
  border-color: var(--line);
  background: var(--brand-tint);
  transform: none;
}

.camp-phase > span {
  position: absolute;
  top: 38px;
  left: 28px;
  display: block;
  margin-bottom: 0;
  color: var(--brand-600);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
}

.camp-phase--primary > span {
  color: var(--accent);
}

.camp-phase strong {
  display: block;
  margin-bottom: 8px;
  color: var(--ink);
  font-size: 27px;
}

.camp-phase--primary strong {
  color: var(--ink);
}

.camp-phase b {
  display: block;
  margin-bottom: 14px;
  color: var(--brand-600);
  font-size: 13px;
}

.camp-phase--primary b {
  color: var(--brand-600);
}

.camp-phase p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.9;
}

.camp-phase--primary p {
  color: var(--muted);
}

.camp-day-list {
  display: grid;
  gap: 34px;
}

.camp-day {
  border: 1px solid var(--line);
  background: var(--white);
}

/* A.05：header 从 3 列强行横向（100px / 0.8fr / 1.2fr，像 Excel 表头）
   → 纵向 stack：序号 → 标题 + 副题 → 承诺句（与 home-camp-feature 同源） */
.camp-day > header {
  display: block;
  min-height: 0;
  padding: 34px 38px 32px;
  color: var(--white);
  background: var(--brand-700);
}

/* A.01：三天卡片统一在同色系深绿梯度上，删掉 #6d5b30 棕（与全站断色） */
.camp-day:nth-child(2) > header {
  background: var(--brand-800);
}

.camp-day:nth-child(3) > header {
  background: var(--brand-deep);
}

.camp-day > header > span {
  display: block;
  margin-bottom: 12px;
  color: rgba(255, 255, 255, 0.6);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
}

.camp-day > header > div {
  margin-bottom: 20px;
}

.camp-day h3 {
  margin-bottom: 6px;
  font-size: 30px;
  line-height: 1.2;
}

.camp-day header p,
.camp-day header b {
  margin: 0;
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
  font-weight: 400;
}

.camp-day header b {
  padding-top: 18px;
  padding-left: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  border-left: 0;
  line-height: 1.8;
}

.camp-modules {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
}

.camp-modules section {
  padding: 36px 38px;
}

.camp-modules section + section {
  border-left: 1px solid var(--line);
}

.camp-modules span {
  color: var(--brand-600);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.camp-modules h4 {
  margin: 8px 0 10px;
  color: var(--ink);
  font-size: 20px;
}

.camp-modules p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.camp-day > footer {
  display: flex;
  gap: 24px;
  padding: 18px 38px;
  color: var(--muted);
  background: var(--brand-tint);
  font-size: 13px;
}

.camp-day > footer strong {
  color: var(--brand-700);
  white-space: nowrap;
}

.camp-feature-grid,
.about-system-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.camp-feature {
  min-height: 300px;
  padding: 44px 34px 40px;
  border-top: 3px solid var(--brand);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.camp-feature:first-child {
  border-left: 1px solid var(--line);
}

/* A.02：序号从 48px/brand-line 的 PPT 占位符退回 12px mono eyebrow，
   与首页 service / 案例页序号语汇同源（字体族由下方 mono 组统一指定） */
.camp-feature > span {
  display: block;
  margin-bottom: 20px;
  color: var(--brand-600);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  line-height: 1;
}

.camp-feature h3 {
  margin-bottom: 14px;
  color: var(--ink);
  font-size: 22px;
}

.camp-feature p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.camp-highlight-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  border-left: 1px solid rgba(255, 255, 255, 0.16);
}

.camp-highlight-grid article {
  min-height: 270px;
  padding: 32px 28px;
  border-right: 1px solid rgba(255, 255, 255, 0.16);
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
}

.camp-highlight-grid span {
  color: var(--brand);
  font-size: 13px;
  font-weight: 700;
}

.camp-highlight-grid h3 {
  margin: 62px 0 12px;
  font-size: 20px;
}

.camp-highlight-grid p {
  margin: 0;
  color: rgba(255, 255, 255, 0.64);
  font-size: 14px;
}

/* A.06：诊断从"小 banner"（62px 内边距 + 亮绿）升级为深色大块，
   与 home-contact / footer 的深色语汇同源，作为全页第二高潮 */
.camp-diagnosis-grid {
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  gap: 84px;
  align-items: start;
  padding: 88px 76px;
  color: var(--white);
  background: var(--brand-deep);
}

.camp-diagnosis h2 {
  margin-bottom: 18px;
  font-size: clamp(30px, 3.4vw, 44px);
  line-height: 1.25;
}

.camp-diagnosis .eyebrow {
  color: rgba(255, 255, 255, 0.68);
}

.camp-diagnosis p {
  margin: 0;
  color: rgba(255, 255, 255, 0.72);
}

.camp-diagnosis ul {
  margin: 0;
}

.camp-diagnosis li {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 24px;
  padding: 19px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.camp-diagnosis li span {
  color: rgba(255, 255, 255, 0.72);
}

.mentor-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.mentor-card {
  display: grid;
  grid-template-columns: 42% 58%;
  min-height: 390px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--white);
}

.mentor-card > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.mentor-card > div {
  padding: 38px 30px;
}

.mentor-card > div > span {
  display: block;
  color: var(--brand-600);
  font-size: 12px;
}

.mentor-card h3 {
  margin: 12px 0 22px;
  color: var(--ink);
  font-size: 30px;
}

.mentor-card p {
  color: var(--muted);
  font-size: 14px;
}

.mentor-card b {
  display: inline-block;
  margin: 4px 4px 0 0;
  padding: 5px 8px;
  color: var(--brand-600);
  background: var(--brand-tint);
  font-size: 11px;
}

/* A.08：导师卡加一组 mono 权威数字（与全站 mono 数字语汇同源）。
   数值取自各卡既有文案，不新增未经确认的数据。 */
.mentor-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
  margin-top: 22px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.mentor-stats span {
  display: block;
}

.mentor-stats b {
  display: block;
  margin: 0 0 2px;
  padding: 0;
  color: var(--brand-600);
  background: none;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.mentor-stats i {
  display: block;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 11px;
  font-style: normal;
  letter-spacing: 0.1em;
}

.audience-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.audience-grid article {
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: 20px;
  align-items: center;
  min-height: 150px;
  padding: 26px 32px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

/* A.03：适用对象序号同样退回 eyebrow（保留 70px 左栏，但不再抢戏） */
.audience-grid span {
  color: var(--brand-600);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
}

.audience-grid h3 {
  margin: 0;
  color: var(--ink);
  font-size: 19px;
}

.camp-notice {
  padding: 0;
  color: var(--white);
  background: var(--brand-700);
}

.camp-notice-inner,
.about-cta-inner {
  display: flex;
  min-height: 280px;
  align-items: center;
  justify-content: space-between;
  gap: 60px;
}

.camp-notice-inner span,
.about-cta-inner span {
  color: rgba(255, 255, 255, 0.62);
  font-size: 12px;
  letter-spacing: 0.18em;
}

.camp-notice-inner h2 {
  margin: 10px 0 8px;
  font-size: 38px;
}

.camp-notice-inner p {
  margin: 0;
  color: rgba(255, 255, 255, 0.67);
}

/* ── About ───────────────────────────────────────────────────────────── */
.about-hero {
  min-height: 640px;
}

.about-intro-grid {
  display: grid;
  grid-template-columns: minmax(250px, 0.72fr) minmax(0, 1.28fr);
  gap: 120px;
  align-items: center;
}

.about-year {
  display: flex;
  aspect-ratio: 1;
  padding: 38px;
  border: 1px solid var(--brand-line);
  flex-direction: column;
  justify-content: flex-end;
  background: var(--brand-tint);
}

.about-year strong {
  color: var(--brand-700);
  font-size: clamp(64px, 8vw, 100px);
  line-height: 1;
  letter-spacing: -0.05em;
}

.about-year span {
  margin-top: 12px;
  color: var(--brand-600);
  font-size: 14px;
  letter-spacing: 0.15em;
}

.about-intro-copy h2,
.about-founder h2,
.contact-visit h2 {
  margin-bottom: 28px;
  color: var(--ink);
  font-size: clamp(32px, 4.3vw, 50px);
  line-height: 1.28;
}

.about-intro-copy p,
.about-founder-grid > div > p {
  color: var(--muted);
  line-height: 2;
}

.about-system-grid {
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  border-left: 1px solid rgba(255, 255, 255, 0.16);
}

.about-system-grid article {
  min-height: 280px;
  padding: 38px 34px;
  border-right: 1px solid rgba(255, 255, 255, 0.16);
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
}

.about-system-grid span {
  color: var(--brand);
  font-size: 13px;
  font-weight: 700;
}

.about-system-grid h3 {
  margin: 60px 0 14px;
  font-size: 21px;
}

.about-system-grid p {
  margin: 0;
  color: rgba(255, 255, 255, 0.64);
  font-size: 14px;
}

.about-founder-grid {
  display: grid;
  grid-template-columns: minmax(340px, 0.85fr) minmax(0, 1.15fr);
  gap: 100px;
  align-items: center;
}

.about-founder figure {
  margin: 0;
  background: var(--brand-tint);
}

.about-founder figure img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  object-position: top center;
}

.about-founder figcaption {
  display: flex;
  padding: 22px 24px;
  align-items: center;
  justify-content: space-between;
}

.about-founder figcaption strong {
  color: var(--ink);
  font-size: 20px;
}

.about-founder figcaption span {
  color: var(--muted);
  font-size: 13px;
}

.about-founder ul {
  margin: 34px 0 0;
  border-top: 1px solid var(--line);
}

.about-founder li {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 28px;
  padding: 19px 0;
  border-bottom: 1px solid var(--line);
}

.about-founder li span {
  color: var(--brand-600);
  font-size: 14px;
  font-weight: 700;
}

.about-founder li p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.principle-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.principle-grid article {
  min-height: 280px;
  padding: 34px 28px;
  border-top: 3px solid var(--brand);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--white);
}

.principle-grid article:first-child {
  border-left: 1px solid var(--line);
}

.principle-grid span {
  color: var(--brand);
  font-size: 13px;
  font-weight: 700;
}

.principle-grid h3 {
  margin: 60px 0 12px;
  color: var(--ink);
  font-size: 20px;
}

.principle-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.about-cta {
  padding-top: 28px;
  padding-bottom: 28px;
}

.about-cta-inner {
  min-height: 240px;
  padding: 50px 60px;
  background: var(--brand-tint);
}

.about-cta-inner span {
  color: var(--brand-600);
}

.about-cta-inner h2 {
  margin: 10px 0 0;
  color: var(--ink);
  font-size: clamp(28px, 3.5vw, 42px);
}

/* ── Contact ─────────────────────────────────────────────────────────── */
.contact-hero {
  position: relative;
  display: flex;
  min-height: 700px;
  align-items: flex-end;
  overflow: hidden;
  color: var(--white);
}

.contact-hero > img,
.contact-hero-shade {
  position: absolute;
  width: 100%;
  height: 100%;
  inset: 0;
}

.contact-hero > img {
  object-fit: cover;
  object-position: center;
}

.contact-hero-shade {
  background: linear-gradient(90deg, rgba(5, 39, 35, 0.84) 0%, rgba(5, 39, 35, 0.35) 58%, rgba(5, 39, 35, 0.08) 100%),
    linear-gradient(0deg, rgba(5, 39, 35, 0.45), transparent 55%);
}

.contact-hero-copy {
  position: relative;
  z-index: 2;
  padding-bottom: 100px;
}

.contact-hero h1 {
  margin-bottom: 20px;
  font-size: clamp(45px, 6vw, 76px);
  line-height: 1.15;
}

.contact-hero p {
  margin: 0;
  color: rgba(255, 255, 255, 0.76);
  font-size: 18px;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.contact-card {
  position: relative;
  min-height: 260px;
  padding: 34px 38px;
  overflow: hidden;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--white);
  transition: color var(--dur), background var(--dur), transform var(--dur);
}

.contact-card--link:hover {
  color: var(--white);
  background: var(--brand);
  transform: translateY(-4px);
}

.contact-card-index {
  position: absolute;
  top: 24px;
  right: 30px;
  color: var(--brand-line);
  font-size: 44px;
  font-weight: 700;
  line-height: 1;
}

.contact-card small {
  display: block;
  margin-bottom: 54px;
  color: var(--brand-600);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
}

.contact-card h3 {
  margin-bottom: 10px;
  color: var(--ink);
  font-size: 27px;
  line-height: 1.45;
}

.contact-card--link:hover small,
.contact-card--link:hover h3,
.contact-card--link:hover .contact-card-index {
  color: var(--white);
}

.contact-card p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.contact-card--link:hover p {
  color: rgba(255, 255, 255, 0.72);
}

.contact-card p b {
  margin-left: 6px;
}

.contact-email {
  overflow-wrap: anywhere;
}

.contact-visit-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 110px;
  align-items: center;
}

.contact-visit p {
  margin-bottom: 28px;
  color: var(--muted);
  line-height: 2;
}

@media (max-width: 1024px) {
  .camp-hero-inner {
    gap: 40px;
  }

  .camp-hero h1 small {
    padding-left: 52px;
  }

  .camp-hero h1 small::before {
    width: 36px;
  }

  /* A.04 同步：楼层时间轴在中屏收窄左槽 */
  .camp-phase {
    padding: 30px 24px 30px 108px;
  }

  .camp-phase > span {
    left: 24px;
  }

  /* A.05 同步：课程卡 header 已是纵向 stack，这里只调内边距 */
  .camp-day > header {
    padding: 30px 30px 28px;
  }

  /* A.06 同步：诊断深色大块在中屏收敛内边距与间距 */
  .camp-diagnosis-grid {
    gap: 56px;
    padding: 68px 52px;
  }

  .camp-highlight-grid,
  .principle-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .mentor-card {
    grid-template-columns: 1fr;
  }

  .mentor-card > img {
    height: 320px;
  }

  .about-intro-grid,
  .about-founder-grid {
    gap: 60px;
  }
}

@media (max-width: 768px) {
  .camp-hero {
    min-height: auto;
    padding: calc(var(--nav-h) + 70px) 0 80px;
  }

  .camp-hero-inner {
    grid-template-columns: 1fr;
    gap: 46px;
  }

  .camp-hero-card {
    max-width: 420px;
  }

  .camp-meta span {
    width: calc(50% - 5px);
    text-align: center;
  }

  /* A.04 同步：移动端楼层编号取消左槽，改为顶部独立一行 */
  .camp-phase {
    padding: 26px 22px;
  }

  .camp-phase > span {
    position: static;
    margin-bottom: 12px;
  }

  /* A.05 同步：课程卡 header 移动端内边距 */
  .camp-day > header {
    padding: 26px 24px 24px;
  }

  .camp-day header b {
    padding: 16px 0 0;
  }

  .camp-modules {
    grid-template-columns: 1fr;
  }

  .camp-modules section {
    padding: 28px 24px;
  }

  .camp-modules section + section {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .camp-day > footer {
    padding: 18px 24px;
    flex-direction: column;
    gap: 3px;
  }

  .camp-feature-grid,
  .about-system-grid,
  .mentor-grid,
  .audience-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .camp-feature {
    min-height: auto;
    border-left: 1px solid var(--line);
  }

  /* A.02 同步：eyebrow 序号在移动端同样用小间距 */
  .camp-feature > span {
    margin-bottom: 16px;
  }

  .camp-highlight-grid,
  .principle-grid {
    grid-template-columns: 1fr;
  }

  .camp-highlight-grid article,
  .principle-grid article {
    min-height: auto;
  }

  .camp-highlight-grid h3,
  .principle-grid h3,
  .about-system-grid h3 {
    margin-top: 32px;
  }

  /* A.06 同步：诊断深色大块在移动端收成单列 */
  .camp-diagnosis-grid {
    grid-template-columns: 1fr;
    gap: 40px;
    padding: 48px 26px;
  }

  .camp-diagnosis li {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .mentor-card {
    grid-template-columns: 1fr;
  }

  .mentor-card > img {
    height: 340px;
  }

  /* A.08 同步：移动端权威数字收紧间距 */
  .mentor-stats {
    gap: 22px;
    margin-top: 18px;
    padding-top: 16px;
  }

  .audience-grid article {
    grid-template-columns: 48px 1fr;
    min-height: 120px;
    padding: 24px 22px;
  }

  .camp-notice-inner,
  .about-cta-inner {
    min-height: auto;
    padding: 52px 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 28px;
  }

  .about-cta-inner {
    padding-right: 24px;
    padding-left: 24px;
  }

  .about-intro-grid,
  .about-founder-grid,
  .contact-visit-grid {
    grid-template-columns: 1fr;
    gap: 50px;
  }

  .about-year {
    width: min(100%, 390px);
  }

  .about-hero {
    min-height: 560px;
  }

  .about-founder figure {
    width: min(100%, 460px);
  }

  .about-founder figcaption {
    align-items: flex-start;
    flex-direction: column;
  }

  .about-founder li {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .principle-grid article {
    border-left: 1px solid var(--line);
  }

  .contact-hero {
    min-height: 620px;
  }

  .contact-hero-shade {
    background: linear-gradient(90deg, rgba(5, 39, 35, 0.84), rgba(5, 39, 35, 0.35));
  }

  .contact-hero-copy {
    padding-bottom: 74px;
  }

  .contact-card {
    min-height: 220px;
    padding: 30px 24px;
  }

  .contact-card small {
    margin-bottom: 40px;
  }

  .contact-card h3 {
    font-size: 22px;
  }
}

/* V3：单色权威体系 × 宋体数字 */
body {
  color: var(--body);
  background: var(--white);
  font-family: var(--font-sans);
}

h1,
h2,
h3,
h4,
.btn {
  font-family: var(--font-sans);
}

.brand-item-number,
.about-year strong,
.principle-grid > article > span,
.camp-feature > span,
.camp-highlight-grid > article > span,
.contact-card-index,
.service-card-index,
.empower-card > span,
.escort-item > span,
.product-item > span,
[data-counter] {
  font-family: var(--font-mono);
  font-variant-numeric: lining-nums tabular-nums;
}

.page-hero {
  min-height: 72svh;
  padding: calc(var(--nav-h) + 108px) 0 128px;
  background: var(--brand-tint);
}

.page-hero::after,
.home-hero::after,
.camp-hero::after {
  display: none;
}

.page-hero h1,
.contact-hero h1 {
  font-family: var(--font-sans);
  font-weight: 800;
  letter-spacing: -0.04em;
}

.home-hero,
.camp-hero {
  background: var(--brand-700);
}

.contact-hero-shade {
  background: rgba(20, 25, 24, 0.68);
}

.section--dark {
  background: var(--brand-700);
}

.btn {
  min-height: 54px;
  padding-inline: 32px;
  border-radius: 0;
  box-shadow: none;
}

.btn:hover,
.btn-primary:hover,
.btn-light:hover,
.brand-item--linked:hover {
  box-shadow: none;
}

.brand-item--linked:hover {
  transform: none;
}

.brand-item,
.contact-card,
.product-item,
.camp-feature,
.principle-grid article {
  border-radius: 0;
}

.brand-item-number,
.contact-card-index,
.principle-grid > article > span {
  color: var(--brand);
  font-size: clamp(22px, 2.4vw, 34px);
  font-weight: 600;
}

.about-year strong {
  color: var(--brand);
  font-size: clamp(88px, 10vw, 144px);
  font-weight: 600;
  letter-spacing: -0.07em;
}

.home-hero h1 {
  max-width: 1120px;
  font-size: clamp(72px, 7.2vw, 112px);
  font-weight: 800;
  line-height: 0.98;
  letter-spacing: -0.055em;
}

.home-hero-copy > p {
  max-width: 720px;
  font-size: 18px;
}

.home-hero-statement {
  border-top: 1px solid rgba(255, 255, 255, 0.28);
}

.home-hero-statement i {
  background: rgba(255, 255, 255, 0.42);
}

.section-head--center {
  max-width: 980px;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-head--center .section-title {
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

@media (max-width: 1024px) {
  .wrap {
    width: min(calc(100% - 64px), var(--wrap));
  }

  /* A.07 同步（1024 断点） */
  .section--lg {
    padding: 132px 0;
  }

  .section--md {
    padding: 76px 0;
  }

  .section-title {
    font-size: clamp(48px, 7vw, 68px);
  }
}

@media (max-width: 768px) {
  .wrap {
    width: calc(100% - 40px);
  }

  .section {
    padding: 80px 0;
  }

  /* A.07 同步（768 断点）：与上方 .section 同特异性且靠后，必须一并覆盖。
     基线 80px，--lg 抬到 100px、--md 收到 60px。 */
  .section--lg {
    padding: 100px 0;
  }

  .section--md {
    padding: 60px 0;
  }

  .section-title {
    font-size: clamp(34px, 10vw, 44px);
    line-height: 1.08;
  }

  .page-hero {
    min-height: 62svh;
    padding: calc(var(--nav-h) + 76px) 0 80px;
  }

  .page-hero h1,
  .contact-hero h1 {
    font-size: clamp(40px, 12vw, 48px);
  }

  .home-hero h1 {
    font-size: clamp(42px, 13vw, 54px);
    line-height: 1.02;
  }

  .about-year strong {
    font-size: clamp(72px, 25vw, 108px);
  }
}

/* V3：首屏揭示、计数与案例轮播 */
.hero-title .hero-line {
  display: block;
  overflow: clip;
  clip-path: inset(0 0 100% 0);
  transition: clip-path 760ms var(--ease);
}

.hero-title .hero-line > span {
  display: block;
  transform: translateY(112%);
  transition: transform 820ms var(--ease);
}

.hero-title .hero-line:nth-child(2),
.hero-title .hero-line:nth-child(2) > span {
  transition-delay: 110ms;
}

.hero-title .hero-line:nth-child(3),
.hero-title .hero-line:nth-child(3) > span {
  transition-delay: 220ms;
}

.hero-title.is-visible .hero-line {
  clip-path: inset(0);
}

.hero-title.is-visible .hero-line > span {
  transform: none;
}

.reveal {
  transform: translateY(26px);
  transition-duration: 700ms;
}

.case-carousel {
  position: relative;
  border-top: 3px solid var(--brand);
  border-bottom: 1px solid var(--line);
  background: var(--white);
  outline: none;
}

.case-carousel:focus-visible {
  outline: 3px solid rgba(33, 143, 130, 0.42);
  outline-offset: 5px;
}

.case-carousel__viewport {
  overflow: hidden;
}

.case-carousel__track {
  display: flex;
  transition: transform 760ms var(--ease);
  will-change: transform;
}

.case-carousel__slide {
  display: grid;
  min-width: 100%;
  min-height: 620px;
  grid-template-columns: minmax(360px, 0.82fr) minmax(0, 1.18fr);
  background: var(--white);
}

.case-carousel__copy {
  display: flex;
  justify-content: center;
  flex-direction: column;
  padding: clamp(48px, 6vw, 92px);
}

.case-carousel__number {
  margin-bottom: auto;
  color: var(--brand);
  font-family: var(--font-serif);
  font-size: clamp(52px, 5.4vw, 82px);
  font-weight: 600;
  line-height: 1;
}

.case-carousel__copy h3 {
  margin: 64px 0 24px;
  color: var(--ink);
  font-size: clamp(44px, 4.8vw, 72px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.045em;
}

.case-carousel__copy p {
  max-width: 440px;
  margin-bottom: 36px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.75;
}

.case-carousel__copy .btn {
  align-self: flex-start;
}

.case-carousel__slide figure {
  min-width: 0;
  min-height: 620px;
  margin: 0;
  overflow: hidden;
  background: var(--brand-tint);
}

.case-carousel__slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.88) contrast(1.02);
  transition: transform 900ms var(--ease), filter 500ms ease;
}

.case-carousel__slide:not([aria-hidden="true"]) img {
  transform: scale(1.025);
}

.case-carousel__controls {
  display: grid;
  min-height: 74px;
  grid-template-columns: minmax(180px, 1fr) auto auto;
  gap: 28px;
  align-items: center;
  padding-left: clamp(24px, 4vw, 64px);
  border-top: 1px solid var(--line);
}

.case-carousel-progress {
  height: 3px;
  overflow: hidden;
  background: rgba(20, 25, 24, 0.12);
}

.case-carousel-progress > span {
  display: block;
  width: 100%;
  height: 100%;
  background: var(--brand);
  transform: scaleX(0.3333);
  transform-origin: left center;
  transition: transform 680ms var(--ease);
}

.case-carousel__status {
  min-width: 62px;
  color: var(--brand-600);
  font-family: var(--font-serif);
  font-size: 15px;
  font-variant-numeric: tabular-nums;
}

.case-carousel__buttons {
  display: flex;
  height: 74px;
}

.case-carousel__buttons button {
  display: grid;
  width: 74px;
  padding: 0;
  border: 0;
  border-left: 1px solid var(--line);
  place-items: center;
  color: var(--ink);
  background: var(--white);
  cursor: pointer;
  font-size: 24px;
  transition: color var(--dur), background var(--dur);
}

.case-carousel__buttons button:hover,
.case-carousel__buttons button:focus-visible {
  color: var(--white);
  background: var(--brand);
}

.brand-grid--supporting {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 72px;
}

@media (max-width: 1024px) {
  .case-carousel__slide {
    min-height: 540px;
    grid-template-columns: minmax(320px, 0.9fr) minmax(0, 1.1fr);
  }

  .case-carousel__slide figure {
    min-height: 540px;
  }

  .brand-grid--supporting {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .case-carousel__slide {
    display: flex;
    min-height: 0;
    flex-direction: column;
  }

  .case-carousel__copy {
    min-height: 390px;
    padding: 38px 24px 44px;
  }

  .case-carousel__number {
    font-size: 52px;
  }

  .case-carousel__copy h3 {
    margin: 48px 0 18px;
    font-size: 42px;
  }

  .case-carousel__copy p {
    margin-bottom: 28px;
    font-size: 16px;
  }

  .case-carousel__slide figure {
    min-height: 270px;
  }

  .case-carousel__controls {
    min-height: 64px;
    grid-template-columns: minmax(80px, 1fr) auto auto;
    gap: 14px;
    padding-left: 20px;
  }

  .case-carousel__buttons,
  .case-carousel__buttons button {
    height: 64px;
  }

  .case-carousel__buttons button {
    width: 54px;
  }

  .brand-grid--supporting {
    grid-template-columns: 1fr;
    margin-top: 48px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero-title .hero-line,
  .hero-title .hero-line > span,
  .case-carousel__track,
  .case-carousel-progress > span,
  .case-carousel__slide img {
    transition: none !important;
  }

  .hero-title .hero-line {
    clip-path: none;
  }

  .hero-title .hero-line > span {
    transform: none;
  }
}

/* V4：首页专项修订 */
.home-hero {
  min-height: 100svh;
  background-color: var(--brand-700);
  background-image: url("assets/contact/huangpu-river.jpg");
  background-position: center 52%;
  background-size: cover;
}

.home-hero::before {
  position: absolute;
  z-index: 0;
  inset: 0;
  background: rgba(8, 39, 35, 0.74);
  content: "";
}

.home-hero-grid {
  z-index: 1;
  opacity: 0.22;
}

.home-hero-inner {
  grid-template-columns: minmax(0, 1fr);
  padding: calc(var(--nav-h) + 86px) 0 104px;
}

.home-hero-copy {
  max-width: 1180px;
}

.home-hero h1 {
  max-width: 1160px;
  margin-bottom: 36px;
  font-family: var(--font-display);
  font-size: clamp(62px, 6.15vw, 94px);
  font-weight: 800;
  line-height: 0.94;
}

.home-hero-copy > p.home-hero-proof {
  max-width: 820px;
  color: rgba(255, 255, 255, 0.9);
  font-size: clamp(18px, 1.55vw, 23px);
  font-weight: 700;
  line-height: 1.6;
}

.home-service-count {
  margin-top: 0;
  font-family: var(--font-mono);
  font-variant-numeric: lining-nums tabular-nums;
}

.home-cases .section-head {
  grid-template-columns: 1fr;
  margin-bottom: clamp(24px, 2.6vw, 36px);
}

.home-cases .section-title {
  font-size: clamp(40px, 3.6vw, 56px);
  line-height: 1.1;
}

.home-services .section-title {
  font-size: clamp(40px, 3.6vw, 56px);
  line-height: 1.15;
}

/* 次级标题层级（40px） */
.home-about .section-title,
.home-camp-feature .section-title {
  font-size: clamp(30px, 2.9vw, 40px);
  line-height: 1.2;
}

.home-about .section-title {
  margin-bottom: 28px;
}

.case-showcase {
  display: grid;
  min-height: 340px;
  grid-template-columns: minmax(380px, 0.82fr) minmax(0, 1.18fr);
  border-top: 3px solid var(--brand);
  border-bottom: 1px solid var(--line);
  background: var(--white);
}

.case-showcase__console {
  display: flex;
  min-width: 0;
  flex-direction: column;
  padding: clamp(24px, 2.6vw, 38px);
}

.case-showcase__meta {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
  margin-bottom: 22px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
}

.case-showcase__meta strong {
  color: var(--brand);
  font-family: var(--font-mono);
  font-size: 16px;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
}

.case-showcase__options {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.case-showcase__option {
  display: grid;
  min-width: 0;
  padding: 0 0 14px;
  border: 0;
  border-bottom: 3px solid rgba(20, 25, 24, 0.12);
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  align-items: end;
  color: var(--muted);
  background: transparent;
  cursor: pointer;
  font: inherit;
  text-align: left;
  transition: border-color 260ms var(--ease), color 260ms var(--ease);
}

.case-showcase__option:hover,
.case-showcase__option:focus-visible,
.case-showcase__option.is-active {
  border-color: var(--brand);
  color: var(--ink);
}

.case-showcase__option:focus-visible {
  outline: 2px solid rgba(33, 143, 130, 0.44);
  outline-offset: 4px;
}

.case-showcase__thumb {
  display: block;
  overflow: hidden;
  grid-column: 1 / -1;
  aspect-ratio: 4 / 3;
  background: var(--brand-tint);
}

.case-showcase__thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: grayscale(1) contrast(0.98) brightness(0.96);
  transition: filter 300ms ease, transform 500ms var(--ease);
}

.case-showcase__option:hover .case-showcase__thumb img,
.case-showcase__option:focus-visible .case-showcase__thumb img,
.case-showcase__option.is-active .case-showcase__thumb img {
  filter: grayscale(0) contrast(1);
  transform: scale(1.035);
}

.case-showcase__option-number {
  color: var(--brand);
  font-family: var(--font-mono);
  font-size: 17px;
  font-variant-numeric: tabular-nums;
}

.case-showcase__option-name {
  overflow: hidden;
  font-size: 13px;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.case-showcase__copy {
  margin-top: auto;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  opacity: 1;
  transform: none;
  transition: opacity 180ms ease, transform 220ms var(--ease);
}

.case-showcase__copy.is-switching {
  opacity: 0;
  transform: translateY(10px);
}

.case-showcase__number {
  display: block;
  color: var(--brand);
  font-family: var(--font-mono);
  font-size: clamp(54px, 5vw, 78px);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  line-height: 1;
}

.case-showcase__copy h3 {
  margin: 22px 0 18px;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: clamp(24px, 2.4vw, 32px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.case-showcase__copy p {
  max-width: 420px;
  margin-bottom: 30px;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.75;
}

.case-showcase__stage {
  position: relative;
  min-width: 0;
  min-height: 320px;
  height: 360px;
  margin: 0;
  overflow: hidden;
  background: var(--brand-tint);
  opacity: 1;
  transition: opacity 180ms ease;
}

.case-showcase__stage.is-switching {
  opacity: 0.16;
}

.case-showcase__stage > img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  filter: saturate(0.9) contrast(1.04);
  transition: filter 360ms ease;
}

.case-showcase__stage.is-switching > img {
  transform: scale(1.045);
}

/* figcaption 已移除（首页 2026-09-01 精简长条黑色方块） */

.client-logo-section {
  background: var(--white);
}

.client-logo-wall {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  margin-top: 56px;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.client-logo-wall__item {
  display: grid;
  min-width: 0;
  min-height: 190px;
  padding: 28px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  place-items: center;
  background: var(--white);
  outline: none;
}

.client-logo-wall__item:focus-visible {
  box-shadow: inset 0 0 0 3px rgba(33, 143, 130, 0.5);
}

.client-logo-wall__item img,
.client-logo-wall__item--malayingxiong > span {
  width: auto;
  max-width: 76%;
  max-height: 92px;
  filter: grayscale(1) contrast(0.74);
  opacity: 0.6;
  transition: filter 320ms ease, opacity 320ms ease, transform 360ms var(--ease);
}

.client-logo-wall__item:hover img,
.client-logo-wall__item:focus-visible img,
.client-logo-wall__item--malayingxiong:hover > span,
.client-logo-wall__item--malayingxiong:focus-visible > span {
  filter: grayscale(0) contrast(1);
  opacity: 1;
  transform: scale(1.045);
}

.client-logo-wall__item--malayingxiong > span {
  display: block;
  width: 132px;
  height: 132px;
  max-width: 100%;
  max-height: none;
  background-image: url("assets/brands/client-logo-wall.png");
  background-position: 0 100%;
  background-repeat: no-repeat;
  background-size: 500% auto;
}

.home-camp-feature {
  position: relative;
  overflow: hidden;
  color: var(--ink);
  background: var(--bg-cool);
}

.home-camp-feature::after {
  position: absolute;
  right: -6%;
  bottom: -38%;
  width: 60%;
  height: 74%;
  background-image:
    radial-gradient(52% 46% at 30% 34%, rgba(33, 143, 130, 0.06), transparent 68%),
    radial-gradient(42% 40% at 72% 64%, rgba(185, 138, 75, 0.05), transparent 70%);
  content: "";
  opacity: 0.9;
  transform: skewY(-12deg);
}

.home-camp-feature__inner {
  position: relative;
  z-index: 2;
}

.home-camp-feature .section-title {
  max-width: 980px;
  color: var(--ink);
  font-size: clamp(30px, 2.9vw, 40px);
  line-height: 1.2;
  margin-bottom: 36px;
}

.home-camp-feature__equation-wrap {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 1180px;
  margin: 0 0 56px;
}

.home-camp-feature__caption {
  display: inline-block;
  color: var(--accent);
  font-size: clamp(14px, 1.4vw, 18px);
  font-weight: 600;
  letter-spacing: 0.05em;
}

.home-camp-feature__equation {
  display: block;
  color: var(--accent);
  font-size: clamp(27px, 3.2vw, 48px);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -0.025em;
}

.home-camp-feature__equation strong {
  color: var(--ink);
  font-weight: 700;
  white-space: nowrap;
}

.home-camp-feature__factors {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-bottom: 52px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.home-camp-feature__factors article {
  min-height: 210px;
  padding: 34px 30px;
  border-right: 1px solid var(--line);
}

.home-camp-feature__factors article:last-child {
  border-right: 0;
}

.home-camp-feature__factors span {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 600;
  font-variant-numeric: lining-nums tabular-nums;
}

.home-camp-feature__factors h3 {
  margin: 30px 0 14px;
  color: var(--ink);
  font-size: 23px;
}

.home-camp-feature__factors p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

.home-about-grid {
  grid-template-columns: minmax(0, 1.08fr) minmax(340px, 0.92fr);
  align-items: start;
}

.home-founder-profile {
  padding: 16px 0 18px 48px;
  border-left: 3px solid var(--brand);
}

.home-founder-profile > span {
  color: var(--brand);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.16em;
}

.home-founder-profile h3 {
  margin: 34px 0 12px;
  color: var(--ink);
  font-size: clamp(54px, 6vw, 84px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.05em;
}

.home-founder-profile p {
  max-width: 480px;
  margin: 14px 0 30px;
  color: var(--muted);
  line-height: 1.85;
}

.home-founder-profile strong {
  display: block;
  max-width: 430px;
  color: var(--ink);
  font-size: 24px;
  line-height: 1.6;
}

.home-contact {
  position: relative;
  display: flex;
  min-height: 64svh;
  align-items: center;
  background-color: var(--brand-700);
  background-image: url("assets/contact/huangpu-river.jpg");
  background-position: center;
  background-size: cover;
}

.home-contact::before {
  position: absolute;
  z-index: 0;
  inset: 0;
  background: rgba(9, 39, 35, 0.82);
  content: "";
}

.home-contact::after {
  display: none;
}

.home-contact-grid {
  grid-template-columns: minmax(0, 0.82fr) minmax(420px, 1.18fr);
  align-items: end;
}

.home-contact h2 {
  max-width: 640px;
  font-size: clamp(30px, 2.9vw, 40px);
  letter-spacing: -0.05em;
  white-space: nowrap;
}

.home-contact-note {
  margin-top: 22px;
  color: rgba(255, 255, 255, 0.66);
  font-size: 14px;
  letter-spacing: 0.14em;
}

.home-contact-address {
  display: flex;
  padding: 34px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.34);
  border-bottom: 1px solid rgba(255, 255, 255, 0.34);
  flex-direction: column;
  gap: 22px;
  font-style: normal;
}

.home-contact-address span {
  color: rgba(255, 255, 255, 0.58);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.16em;
}

.home-contact-address strong {
  color: var(--white);
  font-size: clamp(26px, 2.9vw, 40px);
  font-weight: 650;
  line-height: 1.55;
}

.btn-accent {
  align-self: flex-start;
  min-height: 46px;
  padding: 9px 24px;
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.5);
  background: transparent;
  font-size: 14px;
}

.btn-accent:hover {
  color: var(--white);
  border-color: var(--accent);
  background: var(--accent);
  transform: translateY(-2px);
}

@media (max-width: 1024px) {
  .case-showcase {
    min-height: 280px;
    grid-template-columns: minmax(370px, 0.9fr) minmax(0, 1.1fr);
  }

  .case-showcase__stage {
    height: 300px;
    min-height: 300px;
  }

  .client-logo-wall {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .home-camp-feature__factors article {
    padding-inline: 22px;
  }

  .home-about-grid,
  .home-contact-grid {
    gap: 56px;
  }
}

@media (max-width: 768px) {
  .home-hero {
    min-height: 92svh;
    background-position: 43% center;
  }

  .home-hero-inner {
    padding: calc(var(--nav-h) + 74px) 0 74px;
  }

  .home-hero h1 {
    font-size: clamp(43px, 12.2vw, 54px);
    line-height: 0.98;
  }

  .home-hero-copy > p.home-hero-proof {
    font-size: 17px;
  }

  .home-contact h2 {
    font-size: clamp(26px, 7.2vw, 34px);
    white-space: normal;
  }

  .home-contact-note {
    margin-top: 16px;
    font-size: 13px;
  }

  .case-showcase {
    display: flex;
    min-height: 0;
    flex-direction: column;
  }

  .case-showcase__console {
    display: contents;
  }

  .case-showcase__meta {
    order: 1;
    margin: 0;
    padding: 26px 22px 20px;
  }

  .case-showcase__options {
    order: 2;
    padding: 0 18px 24px;
    gap: 8px;
  }

  .case-showcase__option {
    padding-bottom: 10px;
    gap: 5px;
  }

  .case-showcase__option-name {
    font-size: 12px;
  }

  .case-showcase__stage {
    order: 3;
    min-height: 0;
    aspect-ratio: 4 / 3;
  }

  .case-showcase__stage figcaption {
    padding: 18px 20px;
  }

  .case-showcase__copy {
    order: 4;
    margin: 0;
    padding: 34px 22px 42px;
  }

  .case-showcase__number {
    font-size: 52px;
  }

  .case-showcase__copy h3 {
    margin-top: 18px;
    font-size: 42px;
  }

  .case-showcase__copy p {
    font-size: 16px;
  }

  .client-logo-wall {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-top: 38px;
  }

  .client-logo-wall__item {
    min-height: 142px;
    padding: 20px;
  }

  .client-logo-wall__item img {
    max-height: 66px;
  }

  .client-logo-wall__item--malayingxiong > span {
    width: 96px;
    height: 96px;
  }

  .home-camp-feature::after {
    width: 92%;
  }

  .home-camp-feature__one {
    top: 0;
    right: -36px;
    font-size: 350px;
  }

  .home-camp-feature__equation {
    margin: 44px 0 34px;
    font-size: 27px;
  }

  .home-camp-feature__equation strong {
    white-space: normal;
  }

  .home-camp-feature__factors {
    grid-template-columns: 1fr;
  }

  .home-camp-feature__factors article {
    min-height: 0;
    padding: 26px 20px;
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  }

  .home-camp-feature__factors article:last-child {
    border-bottom: 0;
  }

  .home-camp-feature__factors h3 {
    margin: 14px 0 8px;
  }

  .home-about-grid,
  .home-contact-grid {
    grid-template-columns: 1fr;
  }

  .home-founder-profile {
    padding: 8px 0 8px 26px;
  }

  .home-founder-profile h3 {
    font-size: 56px;
  }

  .home-contact {
    min-height: 72svh;
    background-position: 36% center;
  }

  .home-contact-address strong {
    font-size: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .case-showcase__copy,
  .case-showcase__stage,
  .case-showcase__stage > img,
  .case-showcase__thumb img,
  .client-logo-wall__item img,
  .client-logo-wall__item--malayingxiong > span {
    transition: none !important;
  }
}

/* ── V2 首页商务化组件 ─────────────────────── */

/* 客户 Logo 墙副句 */
.home-client-note {
  max-width: 640px;
  margin-top: 18px;
  color: var(--muted);
  font-size: 15px;
}

/* 关于区 · 发展历程时间线 */
.home-milestones {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  margin: 34px 0 38px;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--brand);
  border-bottom: 1px solid var(--line);
}
.home-milestones li {
  padding: 22px 20px 24px;
  border-right: 1px solid var(--line);
}
.home-milestones li:last-child {
  border-right: 0;
}
.home-milestones__year {
  display: block;
  margin-bottom: 10px;
  color: var(--brand);
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 600;
  font-variant-numeric: lining-nums tabular-nums;
}
.home-milestones__text {
  display: block;
  color: var(--body);
  font-size: 13px;
  line-height: 1.7;
}

/* 关于区 · 创始人数据 */
.home-founder-data {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  margin: 26px 0 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.home-founder-data > div {
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}
.home-founder-data > div + div {
  padding-left: 20px;
  border-left: 1px solid var(--line);
}
.home-founder-data dt {
  color: var(--muted);
  font-size: 12px;
}
.home-founder-data dd {
  margin: 6px 0 0;
  color: var(--brand);
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 600;
  font-variant-numeric: lining-nums tabular-nums;
}

@media (max-width: 768px) {
  .home-milestones {
    grid-template-columns: 1fr;
  }
  .home-milestones li {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .home-milestones li:last-child {
    border-bottom: 0;
  }
  .home-founder-data {
    grid-template-columns: 1fr 1fr;
  }
}

/* V4：保留 data 属性但视觉隐藏的元素，避免破坏 initCaseShowcase 的硬性要求 */
.case-showcase__number[hidden],
.case-showcase__meta strong[hidden] {
  display: none;
}

/* ── V15 case.html 轮播（对齐首页 V11 风格系统） ────────────────── */
.case-carousel {
  position: relative;
  display: grid;
  grid-template-columns: minmax(130px, 0.22fr) minmax(0, 1fr) minmax(130px, 0.22fr);
  gap: clamp(16px, 1.8vw, 28px);
  align-items: center;
  min-height: 400px;
  border-top: 3px solid var(--brand);
  border-bottom: 1px solid var(--line);
  background: var(--white);
  outline: none;
}

/* 左右侧按钮 */
.case-carousel__side {
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: center;
  justify-content: center;
  min-height: 220px;
  padding: 18px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  cursor: pointer;
  transition: background 0.3s var(--ease);
}
.case-carousel__side:hover,
.case-carousel__side:focus-visible {
  background: var(--soft-bg);
}
.case-carousel__side-arrow {
  color: var(--brand);
  font-size: 24px;
  font-weight: 700;
  line-height: 1;
}
.case-carousel__side-label {
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.14em;
}
.case-carousel__side-brand {
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
}
.case-carousel__side img {
  width: 64px;
  height: 64px;
  object-fit: contain;
  filter: grayscale(1) brightness(0.97);
  opacity: 0.68;
  transition: filter 300ms ease, opacity 300ms ease;
}
.case-carousel__side:hover img,
.case-carousel__side:focus-visible img {
  filter: grayscale(0);
  opacity: 1;
}

/* 中间大图舞台 */
.case-carousel__stage {
  display: grid;
  min-height: 400px;
  grid-template-columns: minmax(0, 1.1fr) minmax(300px, 0.9fr);
  align-items: center;
  gap: clamp(28px, 3vw, 48px);
  padding: clamp(24px, 2.6vw, 38px);
  text-decoration: none;
  background: var(--bg-cool);
  border-radius: 8px;
  transition: opacity 180ms ease, transform 220ms var(--ease);
}
.case-carousel__media img {
  display: block;
  width: 100%;
  max-height: 300px;
  object-fit: contain;
  object-position: center;
}
.case-carousel__caption h3 {
  margin: 0 0 14px;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: clamp(24px, 2.4vw, 32px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
}
.case-carousel__caption p {
  margin: 0 0 24px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.75;
}
.case-carousel__more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--brand);
  font-size: 14px;
  font-weight: 600;
  transition: color 0.3s var(--ease);
}
.case-carousel__stage:hover .case-carousel__more {
  color: var(--accent);
}

/* V15：服务品牌 logo 网格灰阶与 hover 转彩色（与首页 V4 案例缩略图一致） */
.partner-grid--grayscale img {
  filter: grayscale(1) contrast(0.98) brightness(0.97);
  transition: filter 320ms var(--ease);
}
.partner-grid--grayscale figure:hover img,
.partner-grid--grayscale figure:focus-within img {
  filter: grayscale(0) saturate(1);
}

/* 移动端导航 */
.case-carousel__mobile-nav {
  display: none;
}

@media (max-width: 1024px) {
  .case-carousel {
    grid-template-columns: minmax(96px, 0.18fr) minmax(0, 1fr) minmax(96px, 0.18fr);
  }
}

@media (max-width: 768px) {
  .case-carousel {
    grid-template-columns: 1fr;
    min-height: 0;
  }
  .case-carousel__side {
    display: none;
  }
  .case-carousel__stage {
    grid-template-columns: 1fr;
    min-height: 0;
    padding: 22px;
  }
  .case-carousel__mobile-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    padding: 16px 0;
  }
  .case-carousel__mobile-btn {
    display: grid;
    width: 42px;
    height: 42px;
    place-items: center;
    border: 1px solid var(--line);
    border-radius: 50%;
    background: var(--white);
    color: var(--brand);
    font-size: 19px;
    cursor: pointer;
    transition: background 0.3s var(--ease);
  }
  .case-carousel__mobile-btn:hover {
    background: var(--soft-bg);
  }
  .case-carousel__counter {
    font-family: var(--font-mono);
    font-size: 14px;
    color: var(--muted);
  }
}