/* ===========================================================
   CIRCAFORM 圆之象工业设计 — 官网样式
   改配色 / 间距 → 只改下面的变量即可
   =========================================================== */

:root {
  --bg: #0a0a0a;
  --bg-soft: #161614;
  --ink: #f5f5f3;
  --ink-2: #8a8a87;
  --ink-3: #6e6e6b;
  --ink-4: #5a5a58;
  --line: #1d1d1b;
  --line-2: #2e2e2c;
  --light-bg: #edebe6;
  --light-ink: #0a0a0a;
  --light-ink-2: #7a7a74;
  --pad: 64px;
  --max: 1440px;
  --font-cn: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-en: "Inter Tight", "Inter", -apple-system, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; overflow-x: clip; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-cn);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}

img { display: block; width: 100%; height: 100%; object-fit: cover; }

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

.wrap { width: 100%; max-width: var(--max); margin: 0 auto; }

/* ---------- 通用小工具 ---------- */
.eyebrow {
  font-family: var(--font-en);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 2.6px;
  color: var(--ink-3);
  text-transform: uppercase;
}

.arrow-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  letter-spacing: 1.5px;
  color: var(--ink-2);
  transition: color .25s ease;
}
.arrow-link:hover { color: var(--ink); }
.arrow-link svg { flex: none; }

/* ---------- 导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 96px;
  padding: 0 var(--pad);
  background: rgba(10, 10, 10, .82);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s ease;
}
.site-header.is-scrolled { border-bottom-color: var(--line); }

.brand { display: flex; align-items: center; gap: 12px; }
.brand-en {
  font-family: var(--font-en);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 3px;
}
.brand-cn {
  font-size: 12px;
  letter-spacing: 2px;
  color: var(--ink-3);
}

.site-nav { display: flex; align-items: center; gap: 40px; }
.site-nav a {
  font-size: 14px;
  letter-spacing: 1.5px;
  color: var(--ink-2);
  transition: color .25s ease;
}
.site-nav a:hover, .site-nav a.is-active { color: var(--ink); }

.nav-toggle {
  display: none;
  width: 26px; height: 16px;
  position: relative;
  background: none; border: 0; padding: 0; cursor: pointer;
}
.nav-toggle i {
  position: absolute; left: 0; width: 100%; height: 1px;
  background: var(--ink); transition: transform .3s ease, opacity .3s ease;
}
.nav-toggle i:nth-child(1) { top: 0; }
.nav-toggle i:nth-child(2) { top: 7px; }
.nav-toggle i:nth-child(3) { top: 14px; }
.nav-open .nav-toggle i:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-open .nav-toggle i:nth-child(2) { opacity: 0; }
.nav-open .nav-toggle i:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero { padding: 168px var(--pad) 72px; }

.hero-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-en);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 2.6px;
  color: var(--ink-3);
  text-transform: uppercase;
}

.hero-h1 {
  margin: 64px 0 0;
  font-size: clamp(56px, 9.2vw, 132px);
  line-height: 1.18;
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--ink);
  white-space: pre-line;
}

.hero-bottom {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 80px;
  margin-top: 64px;
}

.hero-desc {
  max-width: 560px;
  margin: 0;
  font-size: 18px;
  line-height: 2.1;
  color: var(--ink-2);
}

.scroll-cue {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  flex: none;
}
.scroll-cue span {
  font-family: var(--font-en);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 3px;
  color: var(--ink-4);
}
.scroll-cue i { display: block; width: 1px; height: 48px; background: var(--line-2); }

/* ---------- 全幅主视觉 ---------- */
.hero-band {
  position: relative;
  width: 100%;
  height: 820px;
  overflow: hidden;
}
.hero-band img { transform: scale(1.02); }

/* ---------- 区块通用 ---------- */
.section { padding: 176px var(--pad) 0; }

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 60px;
}
.section-head .titles { display: flex; flex-direction: column; gap: 20px; }
.section-title {
  margin: 0;
  font-size: clamp(28px, 3.2vw, 40px);
  line-height: 1.35;
  font-weight: 500;
  letter-spacing: -0.01em;
}
.section-sub {
  max-width: 320px;
  margin: 0;
  font-size: 14px;
  line-height: 2.15;
  color: var(--ink-2);
  text-align: right;
}

/* ---------- Featured 三卡 ---------- */
.card-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 52px;
}

.card { display: flex; flex-direction: column; gap: 20px; }

.card-media {
  position: relative;
  height: 300px;
  overflow: hidden;
  background: var(--bg-soft);
}
.card-media img { transition: transform .8s cubic-bezier(.2, .7, .2, 1); }
.card:hover .card-media img { transform: scale(1.045); }

.card-meta { display: flex; flex-direction: column; gap: 10px; }
.card-tag {
  font-family: var(--font-en);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 2px;
  color: var(--ink-3);
  text-transform: uppercase;
}
.card-title {
  margin: 0;
  font-size: 21px;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--ink);
}

/* ---------- Selected Work ---------- */
.work-figure { margin: 44px 0 0; }
.work-media { height: 780px; overflow: hidden; background: var(--bg-soft); }
.work-caption {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 40px;
  margin-top: 24px;
}
.work-meta {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 2px;
  color: var(--ink-3);
  text-transform: uppercase;
}

/* ---------- How we work ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  margin-top: 64px;
}
.step { display: flex; flex-direction: column; gap: 18px; }
.step-num {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 2px;
  color: var(--ink-4);
}
.step-title { margin: 0; font-size: 22px; font-weight: 500; }
.step-desc { margin: 0; font-size: 13px; line-height: 2; color: var(--ink-2); }

/* ---------- Principles ---------- */
.principles-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 140px;
  align-items: start;
  margin-top: 56px;
}
.principles-statement {
  margin: 0;
  font-size: clamp(30px, 3.6vw, 48px);
  line-height: 1.5;
  font-weight: 500;
  letter-spacing: -0.02em;
  white-space: pre-line;
}
.principle-list { border-top: 1px solid var(--line); }
.principle-item {
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
  font-size: 16px;
  line-height: 1.9;
  color: #c9c9c4;
}
.principle-item span {
  flex: none;
  width: 30px;
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 2px;
  color: var(--ink-4);
}

/* ---------- Insights ---------- */
.insight-list { margin-top: 52px; border-top: 1px solid var(--line); }
.insight-row {
  display: grid;
  grid-template-columns: 168px 1fr auto;
  align-items: center;
  gap: 40px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
  transition: opacity .25s ease;
}
.insight-row:hover { opacity: .72; }
.insight-thumb { height: 104px; overflow: hidden; background: var(--bg-soft); }
.insight-mid { display: flex; flex-direction: column; gap: 12px; }
.insight-tag {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 2px;
  color: var(--ink-3);
}
.insight-title { margin: 0; font-size: 20px; line-height: 1.6; color: var(--ink); }
.insight-date {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 1.4px;
  color: var(--ink-4);
  white-space: nowrap;
}

/* ---------- CTA ---------- */
.cta {
  margin-top: 160px;
  padding: 160px var(--pad);
  background: var(--light-bg);
  color: var(--light-ink);
}
.cta .eyebrow { color: var(--light-ink-2); }
.cta-title {
  margin: 56px 0 0;
  max-width: 1100px;
  font-size: clamp(34px, 5vw, 72px);
  line-height: 1.3;
  font-weight: 700;
  letter-spacing: -0.02em;
  white-space: pre-line;
}
.cta-bottom {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 60px;
  margin-top: 56px;
}
.btn-solid {
  display: inline-block;
  padding: 20px 40px;
  background: var(--light-ink);
  color: var(--ink);
  font-size: 15px;
  letter-spacing: 1px;
  transition: opacity .25s ease;
}
.btn-solid:hover { opacity: .82; }
.cta-info { display: flex; flex-direction: column; gap: 12px; text-align: right; }
.cta-info a, .cta-info p {
  margin: 0;
  font-family: var(--font-en);
  font-size: 15px;
  letter-spacing: 0.5px;
}
.cta-info .addr { font-family: var(--font-cn); font-size: 13px; color: var(--light-ink-2); }

/* ---------- Footer ---------- */
.site-footer {
  padding: 112px var(--pad) 40px;
  background: var(--bg);
  overflow: hidden;
}
.footer-top {
  display: flex;
  justify-content: space-between;
  gap: 60px;
}
.footer-brand { display: flex; flex-direction: column; gap: 16px; max-width: 300px; }
.footer-wordmark {
  font-family: var(--font-en);
  font-size: 30px;
  font-weight: 700;
  letter-spacing: 4px;
}
.footer-brand p { margin: 0; font-size: 14px; line-height: 1.9; color: var(--ink-3); }
.footer-cols { display: flex; gap: 80px; }
.footer-col { display: flex; flex-direction: column; gap: 15px; }
.footer-col h4 {
  margin: 0;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 2px;
  color: var(--ink-4);
}
.footer-col a { font-size: 14px; color: var(--ink-2); transition: color .25s ease; }
.footer-col a:hover { color: var(--ink); }

.ghost-wordmark {
  display: block;
  margin: 64px 0 0;
  font-family: var(--font-en);
  font-size: clamp(80px, 18vw, 260px);
  line-height: .92;
  font-weight: 700;
  letter-spacing: 6px;
  color: var(--bg-soft);
  user-select: none;
}
.footer-divider { height: 1px; background: var(--line); margin-top: 24px; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 40px;
  padding-top: 28px;
  font-size: 12px;
  letter-spacing: 1.2px;
  color: var(--ink-4);
}
.footer-legal { display: flex; gap: 28px; }
.footer-legal a:hover { color: var(--ink-2); }

/* ---------- 进场动画 ---------- */
/* 只有 JS 可用时才隐藏待入场元素——保证无 JS 环境下内容始终可见 */
.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity .9s cubic-bezier(.2,.7,.2,1), transform .9s cubic-bezier(.2,.7,.2,1); }
.js .reveal.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .js .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ===========================================================
   响应式
   =========================================================== */
@media (max-width: 1100px) {
  :root { --pad: 40px; }
  .hero { padding-top: 120px; }
  .hero-band { height: 560px; }
  .work-media { height: 520px; }
  .principles-body { gap: 70px; }
  .section { padding-top: 130px; }
  .cta { margin-top: 120px; padding: 110px var(--pad); }
}

@media (max-width: 860px) {
  :root { --pad: 24px; }

  .site-nav {
    position: fixed;
    inset: 96px 0 auto 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 8px 24px 28px;
    background: rgba(10, 10, 10, .97);
    border-bottom: 1px solid var(--line);
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: opacity .3s ease, transform .3s ease;
  }
  .nav-open .site-nav { opacity: 1; transform: none; pointer-events: auto; }
  .site-nav a { width: 100%; padding: 18px 0; border-bottom: 1px solid var(--line); font-size: 16px; }
  .nav-toggle { display: block; }

  .hero { padding: 96px var(--pad) 56px; }
  .hero-meta { flex-direction: column; align-items: flex-start; gap: 8px; }
  .hero-h1 { margin-top: 40px; line-height: 1.22; }
  .hero-bottom { flex-direction: column; align-items: flex-start; gap: 36px; margin-top: 40px; }
  .hero-desc { font-size: 15px; line-height: 2; }
  .scroll-cue { display: none; }
  .hero-band { height: 420px; }

  .section { padding-top: 96px; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 20px; }
  .section-sub { max-width: none; text-align: left; }

  .card-row { grid-template-columns: 1fr; gap: 40px; margin-top: 36px; }
  .card-media { height: 260px; }

  .work-figure { margin-top: 32px; }
  .work-media { height: 320px; }
  .work-caption { flex-direction: column; align-items: flex-start; gap: 16px; }

  .steps { grid-template-columns: 1fr 1fr; gap: 32px; margin-top: 40px; }

  .principles-body { grid-template-columns: 1fr; gap: 40px; margin-top: 36px; }
  .principle-item { gap: 20px; font-size: 15px; }

  .insight-list { margin-top: 32px; }
  .insight-row { grid-template-columns: 92px 1fr; gap: 18px; padding: 20px 0; }
  .insight-thumb { height: 68px; }
  .insight-title { font-size: 16px; }
  .insight-date { display: none; }

  .cta { margin-top: 96px; padding: 88px var(--pad); }
  .cta-bottom { flex-direction: column; align-items: flex-start; gap: 32px; }
  .cta-info { text-align: left; }

  .site-footer { padding-top: 80px; }
  .footer-top { flex-direction: column; gap: 48px; }
  .footer-cols { gap: 44px; flex-wrap: wrap; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 16px; }
}

/* ===========================================================
   二级页面：作品 / 洞察 / 方法 / 关于 / 联系
   =========================================================== */

/* ---------- 页面头 ---------- */
.page-hero { padding: 160px var(--pad) 0; }
.page-title {
  margin: 48px 0 0;
  font-size: clamp(48px, 7.4vw, 104px);
  line-height: 1.12;
  font-weight: 700;
  letter-spacing: -0.04em;
}
.page-lead {
  max-width: 640px;
  margin: 40px 0 0;
  font-size: 17px;
  line-height: 2.05;
  color: var(--ink-2);
}
.page-hero--center { text-align: center; padding-bottom: 160px; }
.page-hero--center .page-lead { margin-left: auto; margin-right: auto; }
.hero-actions { margin: 56px 0 0; }

.section--tight { padding-top: 96px; }

/* ---------- 正文排版（Markdown 输出） ---------- */
.prose { font-size: 16px; line-height: 2.05; color: #c9c9c4; }
.prose p { margin: 0 0 28px; }
.prose p:last-child { margin-bottom: 0; }
.prose h2 {
  margin: 64px 0 24px;
  font-size: clamp(22px, 2.2vw, 27px);
  line-height: 1.5;
  font-weight: 500;
  letter-spacing: 0;
  color: var(--ink);
}
.prose h2:first-child { margin-top: 0; }
.prose h3 { margin: 48px 0 16px; font-size: 19px; font-weight: 500; color: var(--ink); }
.prose strong { color: var(--ink); font-weight: 600; }
.prose em { font-style: normal; color: var(--ink); }
.prose ul, .prose ol { margin: 0 0 28px; padding-left: 22px; }
.prose li { margin-bottom: 12px; }
.prose li::marker { color: var(--ink-4); }
.prose blockquote {
  margin: 48px 0;
  padding: 4px 0 4px 28px;
  border-left: 1px solid var(--line-2);
  font-size: 20px;
  line-height: 1.95;
  color: var(--ink);
}
.prose a { color: var(--ink); border-bottom: 1px solid var(--line-2); transition: border-color .25s ease; }
.prose a:hover { border-bottom-color: var(--ink); }
.prose .md-figure { margin: 44px 0; }
.prose .md-figure img { height: auto; }

/* ---------- 返回链接 ---------- */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  letter-spacing: 1.5px;
  color: var(--ink-2);
  transition: color .25s ease;
}
.back-link:hover { color: var(--ink); }
.case-back { padding: 148px var(--pad) 0; }

/* ---------- 作品列表 ---------- */
.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--line);
}
.filter-chip {
  padding: 0 0 4px;
  background: none;
  border: 0;
  border-bottom: 1px solid transparent;
  font-family: var(--font-cn);
  font-size: 13px;
  letter-spacing: 1px;
  color: var(--ink-3);
  cursor: pointer;
  transition: color .25s ease, border-color .25s ease;
}
.filter-chip:hover { color: var(--ink-2); }
.filter-chip.is-active { color: var(--ink); border-bottom-color: var(--ink); }

.works-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 72px 40px;
  margin-top: 56px;
}
.work-card { display: flex; flex-direction: column; gap: 24px; }
.work-card-media {
  height: 440px;
  overflow: hidden;
  background: var(--bg-soft);
}
.work-card-media img { transition: transform .9s cubic-bezier(.2, .7, .2, 1); }
.work-card:hover .work-card-media img { transform: scale(1.04); }
.work-card-meta { display: flex; flex-direction: column; gap: 12px; }
.work-card-top {
  display: flex;
  align-items: baseline;
  gap: 18px;
  font-family: var(--font-en);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 2px;
  color: var(--ink-4);
  text-transform: uppercase;
}
.work-card-title { margin: 0; font-size: 24px; font-weight: 500; color: var(--ink); }
.work-card-desc { margin: 0; font-size: 14px; line-height: 1.9; color: var(--ink-2); }
.grid-empty { margin: 64px 0 0; font-size: 14px; color: var(--ink-3); }

/* ---------- 案例 / 文章详情 ---------- */
.case-head { padding: 32px var(--pad) 0; }
.case-title {
  margin: 36px 0 0;
  max-width: 1100px;
  font-size: clamp(38px, 6vw, 84px);
  line-height: 1.16;
  font-weight: 700;
  letter-spacing: -0.035em;
}
.case-title--article { font-size: clamp(32px, 4.4vw, 60px); line-height: 1.25; max-width: 940px; }
.case-tagline {
  max-width: 640px;
  margin: 32px 0 0;
  font-size: 17px;
  line-height: 2;
  color: var(--ink-2);
}
.case-cover {
  height: clamp(380px, 52vw, 760px);
  margin-top: 64px;
  overflow: hidden;
  background: var(--bg-soft);
}

.case-meta {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  margin: 0;
  padding: 44px var(--pad);
  border-bottom: 1px solid var(--line);
}
.case-meta { border-top: 1px solid var(--line); margin-top: 72px; }
.case-meta-item { display: flex; flex-direction: column; gap: 12px; margin: 0; }
.case-meta-item dt {
  font-family: var(--font-en);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 2px;
  color: var(--ink-4);
  text-transform: uppercase;
}
.case-meta-item dd { margin: 0; font-size: 14px; line-height: 1.8; color: var(--ink); }

.case-body { max-width: 780px; margin: 96px auto 0; padding: 0 var(--pad); }

.case-gallery {
  display: flex;
  flex-direction: column;
  gap: 32px;
  margin-top: 96px;
  padding: 0 var(--pad);
}
.case-gallery-item { margin: 0; }
.case-gallery-item img { height: auto; }
.case-gallery-item figcaption {
  margin-top: 16px;
  font-size: 12px;
  letter-spacing: 1px;
  color: var(--ink-3);
}

/* ---------- 上下篇 ---------- */
.pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin: 120px var(--pad) 0;
  padding-top: 40px;
  border-top: 1px solid var(--line);
}
.pager-item { display: flex; flex-direction: column; gap: 14px; transition: opacity .25s ease; }
.pager-item:hover { opacity: .7; }
.pager-item--next { text-align: right; align-items: flex-end; }
.pager-item--void { pointer-events: none; }
.pager-label {
  font-family: var(--font-en);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 2px;
  color: var(--ink-4);
  text-transform: uppercase;
}
.pager-title { font-size: 20px; font-weight: 500; color: var(--ink); }

/* ---------- 洞察列表（大图版） ---------- */
.insight-list--big .insight-row { padding: 34px 0; grid-template-columns: 260px 1fr auto; }
.insight-list--big .insight-thumb { height: 160px; }
.insight-list--big .insight-title { font-size: 24px; line-height: 1.5; }
.insight-excerpt {
  max-width: 620px;
  margin: 4px 0 0;
  font-size: 14px;
  line-height: 1.9;
  color: var(--ink-3);
}

/* ---------- 方法页 ---------- */
.flow { border-top: 1px solid var(--line); }
.flow-row {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 60px;
  padding: 48px 0;
  border-bottom: 1px solid var(--line);
}
.flow-left { display: flex; flex-direction: column; gap: 16px; }
.flow-num {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 2px;
  color: var(--ink-4);
}
.flow-title { margin: 0; font-size: 30px; font-weight: 500; letter-spacing: -0.01em; }
.flow-right { display: flex; flex-direction: column; gap: 26px; padding-top: 6px; }
.flow-desc { max-width: 640px; margin: 0; font-size: 15px; line-height: 2.05; color: var(--ink-2); }
.tag-row { display: flex; flex-wrap: wrap; gap: 10px; }
.tag {
  padding: 8px 14px;
  border: 1px solid var(--line-2);
  font-size: 12px;
  letter-spacing: 0.5px;
  color: var(--ink-2);
}

.service-list { margin-top: 56px; border-top: 1px solid var(--line); }
.service-row {
  display: grid;
  grid-template-columns: 48px minmax(180px, 300px) 1fr;
  align-items: baseline;
  gap: 40px;
  padding: 30px 0;
  border-bottom: 1px solid var(--line);
}
.service-num {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 1.5px;
  color: var(--ink-4);
}
.service-name { margin: 0; font-size: 21px; font-weight: 500; }
.service-desc { margin: 0; font-size: 14px; line-height: 1.9; color: var(--ink-2); }

/* ---------- 关于页 ---------- */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 96px;
  padding: 0 var(--pad);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.stat { display: flex; flex-direction: column; gap: 14px; padding: 48px 0; }
.stat-num {
  font-family: var(--font-en);
  font-size: clamp(34px, 4vw, 56px);
  font-weight: 500;
  letter-spacing: -0.02em;
}
.stat-label { font-size: 12px; letter-spacing: 1px; color: var(--ink-3); }

.about-intro { max-width: 780px; margin-top: 56px; }

.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  margin-top: 56px;
}
.team-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}
.team-name { margin: 0; font-size: 22px; font-weight: 500; }
.team-role {
  font-family: var(--font-en);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 2px;
  color: var(--ink-4);
  text-transform: uppercase;
}
.team-bio { margin: 8px 0 0; font-size: 14px; line-height: 1.95; color: var(--ink-2); }

.award-list { margin-top: 48px; border-top: 1px solid var(--line); }
.award-row {
  display: grid;
  grid-template-columns: 90px 1fr auto;
  align-items: baseline;
  gap: 32px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}
.award-year {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 1.5px;
  color: var(--ink-4);
}
.award-name { font-size: 16px; color: var(--ink); }
.award-project { font-size: 13px; color: var(--ink-3); }

.client-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0 40px;
  margin-top: 48px;
}
.client-name {
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
  color: var(--ink-2);
}

/* ---------- 联系页 ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 120px;
  align-items: start;
}
.contact-channels { border-top: 1px solid var(--line); }
.contact-channel {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}
.contact-label {
  font-family: var(--font-en);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 2px;
  color: var(--ink-4);
  text-transform: uppercase;
}
.contact-value { font-size: 18px; color: var(--ink); transition: opacity .25s ease; }
a.contact-value:hover { opacity: .75; }
.contact-value--plain { font-size: 15px; line-height: 1.8; color: var(--ink-2); }
.contact-note { font-size: 12px; color: var(--ink-3); }

.contact-channel--qr { display: flex; flex-direction: column; align-items: flex-start; gap: 10px; }
.contact-qr {
  width: 140px; height: 140px;
  background: #F5F5F3; border-radius: 8px;
  padding: 8px; box-sizing: border-box;
}

.contact-form-wrap { display: flex; flex-direction: column; }
.contact-form-title {
  margin: 22px 0 44px;
  font-size: clamp(24px, 2.6vw, 32px);
  font-weight: 500;
  letter-spacing: -0.01em;
}
.contact-form { display: flex; flex-direction: column; gap: 30px; }
.field { display: flex; flex-direction: column; gap: 12px; }
.field label {
  font-size: 11px;
  letter-spacing: 1.5px;
  color: var(--ink-3);
}
.field input, .field textarea {
  width: 100%;
  padding: 12px 0;
  background: none;
  border: 0;
  border-bottom: 1px solid var(--line-2);
  color: var(--ink);
  font-family: var(--font-cn);
  font-size: 15px;
  line-height: 1.7;
  outline: none;
  transition: border-color .25s ease;
  resize: vertical;
}
.field input::placeholder, .field textarea::placeholder { color: var(--ink-4); }
.field input:focus, .field textarea:focus { border-bottom-color: var(--ink); }
.contact-form .btn-solid { align-self: flex-start; margin-top: 8px; cursor: pointer; border: 0; font-family: var(--font-cn); }
.form-note { margin: 0; font-size: 11px; line-height: 1.9; color: var(--ink-4); }

.map-band {
  height: 460px;
  margin-top: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-soft);
  border-top: 1px solid var(--line);
}
.map-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  text-align: center;
  padding: 0 var(--pad);
}
.map-text { margin: 0; font-size: 15px; color: var(--ink-2); }
.map-hint { font-size: 11px; letter-spacing: 1px; color: var(--ink-4); }

/* ===========================================================
   二级页面响应式
   =========================================================== */
@media (max-width: 1100px) {
  .case-meta { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .contact-grid { gap: 72px; }
  .flow-row { grid-template-columns: 220px 1fr; gap: 40px; }
  .work-card-media { height: 340px; }
}

@media (max-width: 860px) {
  .page-hero { padding: 96px var(--pad) 0; }
  .page-title { margin-top: 32px; line-height: 1.18; }
  .page-lead { margin-top: 28px; font-size: 15px; line-height: 2; }
  .page-hero--center { padding-bottom: 96px; }

  .section--tight { padding-top: 64px; }

  .case-back { padding: 104px var(--pad) 0; }
  .case-head { padding-top: 28px; }
  .case-title { margin-top: 24px; line-height: 1.2; }
  .case-tagline { margin-top: 20px; font-size: 15px; line-height: 1.95; }
  .case-cover { margin-top: 40px; height: 300px; }
  .case-meta { margin-top: 48px; padding: 32px var(--pad); gap: 28px; }
  .case-body { margin-top: 56px; }
  .case-gallery { margin-top: 56px; gap: 20px; }
  .prose { font-size: 15px; line-height: 2; }
  .prose h2 { margin: 44px 0 18px; }
  .prose blockquote { margin: 32px 0; font-size: 17px; padding-left: 20px; }

  .pager { margin: 72px var(--pad) 0; grid-template-columns: 1fr; gap: 28px; }
  .pager-item--next { text-align: left; align-items: flex-start; }
  .pager-item--void { display: none; }

  .works-grid { grid-template-columns: 1fr; gap: 48px; margin-top: 36px; }
  .work-card-media { height: 240px; }
  .work-card-title { font-size: 20px; }
  .filter-row { gap: 8px 20px; padding-bottom: 20px; }

  .insight-list--big .insight-row { grid-template-columns: 96px 1fr; padding: 24px 0; }
  .insight-list--big .insight-thumb { height: 72px; }
  .insight-list--big .insight-title { font-size: 17px; }
  .insight-excerpt { display: none; }

  .flow-row { grid-template-columns: 1fr; gap: 20px; padding: 36px 0; }
  .flow-title { font-size: 24px; }
  .flow-desc { font-size: 14px; }
  .service-row { grid-template-columns: 34px 1fr; gap: 8px 18px; padding: 24px 0; }
  .service-desc { grid-column: 2; }
  .service-name { font-size: 18px; }

  .stats-bar { grid-template-columns: 1fr 1fr; margin-top: 56px; }
  .stat { padding: 32px 0; }
  .about-intro { margin-top: 32px; }
  .team-grid { grid-template-columns: 1fr; gap: 28px; margin-top: 36px; }
  .award-row { grid-template-columns: 64px 1fr; gap: 8px 20px; padding: 20px 0; }
  .award-project { grid-column: 2; font-size: 12px; }
  .client-grid { grid-template-columns: 1fr 1fr; gap: 0 24px; margin-top: 32px; }

  .contact-grid { grid-template-columns: 1fr; gap: 64px; }
  .contact-value { font-size: 16px; }
  .contact-form-title { margin: 18px 0 32px; }
  .map-band { height: 280px; margin-top: 88px; }
}