/* ============================================================
   FUGE 浮格 — 方向 A+C
   A 单件尺度·静物标本 + C 格的偏移·网格秩序中的浮动
   黑白为结构：深色区=场景质感，浅色区=标本信息
   ============================================================ */

:root {
  color-scheme: light;

  --paper: #ffffff;
  --mount: #f4f4f4;
  --ink: #0a0a0a;
  --ink-70: rgba(10, 10, 10, 0.70);
  --ink-50: rgba(10, 10, 10, 0.50);
  --hairline: rgba(10, 10, 10, 0.14);
  --hairline-soft: rgba(10, 10, 10, 0.08);
  --hairline-light: rgba(255, 255, 255, 0.18);
  --on-dark: #ffffff;
  --on-dark-60: rgba(255, 255, 255, 0.60);

  --serif: "Songti SC", "Source Han Serif SC", "Noto Serif CJK SC", "SimSun", serif;
  --sans: "Helvetica Neue", Helvetica, Inter, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;

  --max: 1240px;
  --gutter: 40px;
  --col: calc((var(--max) - var(--gutter) * 11) / 12);
}

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

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

body {
  margin: 0;
  min-width: 320px;
  overflow-x: clip;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4, p, ul, ol, figure { margin: 0; }
ol, ul { padding: 0; list-style: none; }

button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: 0; padding: 0; }

:focus-visible {
  outline: 1px solid var(--ink);
  outline-offset: 3px;
}

/* 只在读屏/搜索引擎里保留的标题 */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* 键盘用户跳过导航，直接到正文 */
.skip-link {
  position: fixed;
  top: 0;
  left: 16px;
  z-index: 100;
  padding: 10px 18px;
  background: var(--ink);
  color: var(--on-dark);
  font-size: 13px;
  letter-spacing: 0.06em;
  transform: translateY(-120%);
  transition: transform 180ms ease;
}
.skip-link:focus { transform: translateY(0); }
.skip-link:focus-visible { outline: 2px solid var(--on-dark); outline-offset: -4px; }

/* 中英切换：默认隐藏英文 */
.lang-en { display: none; }
body[data-lang="en"] .lang-zh { display: none; }
body[data-lang="en"] .lang-en { display: inline; }
body[data-lang="en"] .lang-en.block,
.lang-en.block { display: none; }
body[data-lang="en"] .lang-en.block { display: block; }

.shell {
  width: min(var(--max), calc(100% - var(--gutter) * 2));
  margin-inline: auto;
}

/* ---------- micro 标签：英文超细无衬线，中文小号 ---------- */
.micro {
  display: block;
  margin: 0;
  font-family: var(--sans);
  font-size: 11px;
  font-weight: 400;
  line-height: 1.4;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-50);
}
body[data-lang="en"] .micro { letter-spacing: 0.22em; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 26px;
  border: 1px solid transparent;
  border-radius: 0;
  font-size: 14px;
  letter-spacing: 0.06em;
  transition: background-color 200ms ease, color 200ms ease, border-color 200ms ease;
}
.btn-light { background: var(--on-dark); color: var(--ink); border-color: var(--on-dark); }
.btn-light:hover { background: transparent; color: var(--on-dark); border-color: var(--on-dark); }
.btn-ghost-light { color: var(--on-dark); border-color: var(--hairline-light); }
.btn-ghost-light:hover { color: var(--ink); background: var(--on-dark); border-color: var(--on-dark); }
.btn-dark { background: var(--ink); color: var(--on-dark); border-color: var(--ink); }
.btn-dark:hover { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn-ghost { border-color: var(--hairline); color: var(--ink); }
.btn-ghost:hover { border-color: var(--ink); }
.btn-primary { background: var(--ink); color: var(--on-dark); border-color: var(--ink); }
.btn-primary:hover { background: transparent; color: var(--ink); }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--hairline);
  font-size: 14px;
  color: var(--ink-70);
  transition: color 200ms ease, border-color 200ms ease;
}
.link-arrow::after {
  content: "";
  width: 20px;
  height: 1px;
  background: currentColor;
  transition: width 200ms ease;
}
.link-arrow:hover { color: var(--ink); border-color: var(--ink); }
.link-arrow:hover::after { width: 30px; }

/* ---------- 页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--hairline-soft);
}
.header-row {
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: 68px;
}
.brand { display: inline-flex; align-items: center; gap: 12px; margin-right: auto; }
.brand-mark { width: 26px; height: 26px; object-fit: contain; }
.brand-name {
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.22em;
}
.brand-cn {
  margin-left: 10px;
  font-family: var(--serif);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--ink-50);
}

.nav { display: flex; align-items: center; gap: 30px; }
.nav a {
  position: relative;
  font-size: 14px;
  color: var(--ink-50);
  transition: color 200ms ease;
}
.nav a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -6px;
  height: 1px;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 240ms ease;
}
.nav a:hover { color: var(--ink); }
.nav a:hover::after,
.nav a.active::after { transform: scaleX(1); }
.nav a.active { color: var(--ink); }

.lang-switch { display: inline-flex; align-items: center; gap: 8px; }
.lang-switch button {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ink-50);
  padding: 4px 2px;
  transition: color 200ms ease;
}
.lang-switch button.active { color: var(--ink); }
.lang-switch button:hover { color: var(--ink); }
.lang-switch button + button { border-left: 1px solid var(--hairline); padding-left: 10px; }

.header-tools { display: flex; align-items: center; gap: 18px; }

/* 移动端点按菜单：桌面不显示 */
.menu-toggle { display: none; }

/* ============================================================
   1. HERO — 深色，全出血场景
   ============================================================ */
.hero {
  position: relative;
  width: 100%;
  margin-bottom: clamp(60px, 8vw, 110px);
  min-height: min(88vh, 860px);
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  background: var(--ink);
}
.hero-picture {
  position: absolute;
  inset: 0;
  display: block;
}
.hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 42%;
}
.hero-veil {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(125% 100% at 0% 100%, rgba(10,10,10,0.80) 0%, rgba(10,10,10,0.52) 42%, rgba(10,10,10,0.10) 74%, rgba(10,10,10,0) 100%),
    linear-gradient(90deg, rgba(10,10,10,0.42) 0%, rgba(10,10,10,0.22) 34%, rgba(10,10,10,0.04) 62%, rgba(10,10,10,0) 100%),
    linear-gradient(180deg, rgba(10,10,10,0.26) 0%, rgba(10,10,10,0.04) 38%, rgba(10,10,10,0.34) 100%);
}
.hero-body {
  position: relative;
  z-index: 2;
  padding: 0 0 clamp(56px, 9vw, 108px);
  color: var(--on-dark);
}
.hero .micro { color: rgba(255,255,255,0.80); margin-bottom: 26px; text-shadow: 0 1px 14px rgba(10,10,10,0.45); }
.hero-title {
  font-family: var(--serif);
  font-size: clamp(44px, 7.2vw, 104px);
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: 0.01em;
  max-width: 16ch;
}
.hero-lede {
  margin-top: 28px;
  max-width: 44ch;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(255,255,255,0.78);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 38px; }

/* ============================================================
   2. 定位陈述 — 单栏偏移，不用三列卡片
   ============================================================ */
.statement { padding: clamp(80px, 11vw, 150px) 0 clamp(60px, 8vw, 104px); }
.statement-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  column-gap: var(--gutter);
  row-gap: 36px;
}
.statement-index { grid-column: 1 / 3; padding-top: 14px; }
.statement-body { grid-column: 4 / 11; }
.statement-zh {
  font-family: var(--serif);
  font-size: clamp(28px, 3.6vw, 48px);
  line-height: 1.42;
  letter-spacing: 0.01em;
}
.statement-note {
  margin-top: 34px;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.95;
  color: var(--ink-70);
}

/* ============================================================
   3. 精选作品 — 偏移网格标本块（A 单件尺度 + C 偏移）
   ============================================================ */
.works { padding: clamp(20px, 3vw, 40px) 0 clamp(80px, 11vw, 150px); }
.works-head {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  column-gap: var(--gutter);
  align-items: baseline;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--ink);
}
.works-head .micro { grid-column: 1 / 4; }
.works-head-note { grid-column: 5 / 11; font-size: 14px; color: var(--ink-50); }
.works-head .link-arrow { grid-column: 11 / 13; justify-self: end; }

.specimen-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  column-gap: var(--gutter);
  row-gap: clamp(48px, 7vw, 96px);
  padding-top: clamp(40px, 5vw, 68px);
}
.specimen { display: block; position: relative; }
/* 刻意偏移：宽块与窄块错落、起点不同，制造"浮动"但不失序。
   显式指定 grid-row/grid-column，确保同排不共用栏位。 */
.specimen:nth-child(1) { grid-column: 1 / 8;  grid-row: 1; }
.specimen:nth-child(2) { grid-column: 8 / 13; grid-row: 1; margin-top: clamp(52px, 9vw, 140px); }
.specimen:nth-child(3) { grid-column: 2 / 8;  grid-row: 2; margin-top: clamp(24px, 4vw, 56px); }
.specimen:nth-child(4) { grid-column: 8 / 13; grid-row: 2; margin-top: clamp(72px, 13vw, 190px); }

.specimen-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--hairline);
}
.specimen-name {
  font-family: var(--serif);
  font-size: clamp(20px, 2vw, 27px);
  letter-spacing: 0.02em;
}
.specimen-en {
  font-size: 11px;
  font-weight: 300;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-50);
  white-space: nowrap;
}
.specimen-media {
  position: relative;
  margin-top: 16px;
  aspect-ratio: 5 / 4;
  overflow: hidden;
  background: var(--mount);
  border: 1px solid var(--hairline-soft);
}
.specimen-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 600ms cubic-bezier(0.2, 0.6, 0.2, 1);
}
.specimen:hover .specimen-media img { transform: scale(1.035); }

/* 展签：hover 浮现 */
.specimen-tag {
  position: absolute;
  left: 0;
  bottom: 0;
  display: flex;
  gap: 18px;
  padding: 12px 16px;
  background: rgba(255,255,255,0.94);
  backdrop-filter: blur(6px);
  border-top: 1px solid var(--hairline);
  border-right: 1px solid var(--hairline);
  font-size: 11px;
  line-height: 1.5;
  letter-spacing: 0.04em;
  color: var(--ink-70);
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 260ms ease, transform 260ms ease;
  pointer-events: none;
}
.specimen:hover .specimen-tag,
.specimen:focus-visible .specimen-tag { opacity: 1; transform: translateY(0); }
.specimen-tag strong { display: block; font-weight: 500; color: var(--ink); }

.specimen-caption {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--hairline-soft);
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-70);
}
.specimen-caption p { flex: 1; max-width: 46ch; }

/* ============================================================
   4. 场景选型 — 服务采购决策
   ============================================================ */
.scenarios {
  padding: clamp(60px, 8vw, 110px) 0;
  border-top: 1px solid var(--hairline);
}
.scenarios-head {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  column-gap: var(--gutter);
  row-gap: 24px;
  align-items: baseline;
  padding-bottom: 26px;
  border-bottom: 1px solid var(--ink);
}
.scenarios-head .micro { grid-column: 1 / 4; }
.section-title {
  grid-column: 4 / 13;
  font-family: var(--serif);
  font-size: clamp(24px, 3vw, 38px);
  font-weight: 400;
  line-height: 1.35;
}
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  column-gap: var(--gutter);
}
.scenario {
  padding: 28px 0 32px;
  border-bottom: 1px solid var(--hairline-soft);
}
.scenario-num {
  font-family: var(--sans);
  font-size: 11px;
  font-weight: 300;
  letter-spacing: 0.2em;
  color: var(--ink-50);
}
.scenario h3 {
  margin: 14px 0 12px;
  font-family: var(--serif);
  font-size: 21px;
  font-weight: 400;
  letter-spacing: 0.02em;
}
.scenario p { font-size: 13px; line-height: 1.8; color: var(--ink-70); }
.scenario-forms {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--hairline-soft);
  font-size: 11px !important;
  letter-spacing: 0.1em;
  color: var(--ink-50) !important;
}

/* ============================================================
   5. 定制流程 — 横向细线时间轴（置于深色屏内）
   ============================================================ */
.material-process { padding-bottom: clamp(46px, 6vw, 78px); }
.process-head {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  column-gap: var(--gutter);
  align-items: baseline;
  padding-bottom: 26px;
  border-bottom: 1px solid var(--ink);
}
.process-head .micro { grid-column: 1 / 4; }
.process-head .section-title { grid-column: 4 / 13; }
.process-line {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  column-gap: var(--gutter);
}
.process-step {
  position: relative;
  padding: 30px 0 0;
}
/* 顶部细线 + 节点 */
.process-step::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: var(--hairline);
}
.process-step::after {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 7px; height: 7px;
  background: var(--ink);
  transform: translateY(-3px);
}
.process-num {
  font-size: 11px;
  font-weight: 300;
  letter-spacing: 0.2em;
  color: var(--ink-50);
}
.process-step h3 {
  margin: 14px 0 10px;
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 400;
}
.process-step p { font-size: 13px; line-height: 1.75; color: var(--ink-70); max-width: 30ch; }

/* 深色屏内的流程：线条、节点与文字换成浅色 */
.material .process-head { border-bottom-color: rgba(255,255,255,0.26); }
.material .process-head .micro { color: rgba(255,255,255,0.5); }
.material .process-step::before { background: rgba(255,255,255,0.16); }
.material .process-step::after { background: var(--on-dark); }
.material .process-num { color: rgba(255,255,255,0.5); }
.material .process-step p { color: rgba(255,255,255,0.62); }
.material .process-line { margin-top: clamp(22px, 2.6vw, 32px); }

/* ============================================================
   6. 材质与工艺 — 深色
   ============================================================ */
.material { background: var(--ink); color: var(--on-dark); padding: clamp(64px, 8vw, 112px) 0 clamp(70px, 9vw, 130px); }
.material-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  column-gap: var(--gutter);
  row-gap: 40px;
  align-items: center;
  padding-top: clamp(50px, 6vw, 84px);
  border-top: 1px solid rgba(255,255,255,0.14);
}
.material-media { grid-column: 1 / 7; }
.material-media img { width: 100%; aspect-ratio: 3 / 4; object-fit: cover; }
.material-body { grid-column: 8 / 13; }
.material-body .micro { color: rgba(255,255,255,0.5); margin-bottom: 26px; }
.material-zh {
  font-family: var(--serif);
  font-size: clamp(26px, 3.2vw, 42px);
  line-height: 1.42;
}
.material-note {
  margin-top: 28px;
  max-width: 40ch;
  font-size: 15px;
  line-height: 1.9;
  color: rgba(255,255,255,0.66);
}

/* ============================================================
   7. 联系 CTA
   ============================================================ */
.contact-cta { padding: clamp(80px, 11vw, 150px) 0; }
.contact-cta-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  column-gap: var(--gutter);
  row-gap: 28px;
  padding-top: 34px;
  border-top: 1px solid var(--ink);
}
.contact-cta-grid > .micro { grid-column: 1 / 4; padding-top: 12px; }
.contact-cta-grid > div { grid-column: 4 / 12; }
.contact-cta-title {
  font-family: var(--serif);
  font-size: clamp(34px, 5.4vw, 72px);
  line-height: 1.22;
}
.contact-cta-actions { display: flex; align-items: center; gap: 30px; flex-wrap: wrap; margin-top: 40px; }

/* ---------- 页脚 ---------- */
.site-footer {
  border-top: 1px solid var(--hairline);
  padding: 40px 0 46px;
}
.footer-row {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  column-gap: var(--gutter);
  row-gap: 22px;
  align-items: start;
}
.footer-brand { grid-column: 1 / 4; }
.footer-brand p { margin-top: 10px; font-size: 12px; color: var(--ink-50); }
.footer-meta { grid-column: 5 / 10; }
.footer-note { font-size: 12px; line-height: 1.75; color: var(--ink-50); max-width: 40ch; }
.footer-links { grid-column: 10 / 13; display: flex; flex-direction: column; gap: 10px; align-items: flex-end; }
.footer-links a { font-size: 13px; color: var(--ink-50); transition: color 200ms ease; }
.footer-links a:hover { color: var(--ink); }

/* ============================================================
   进场动画：细线先现，图后到
   仅在 JS 确认可动效时才隐藏内容（.js-reveal 由 script.js 添加），
   否则 JS 失败或观察器未触发时内容必须始终可见。
   ============================================================ */
@media (prefers-reduced-motion: no-preference) {
  html.js-reveal .reveal { opacity: 0; transform: translateY(14px); }
  html.js-reveal .reveal.is-in {
    opacity: 1;
    transform: none;
    transition: opacity 700ms ease, transform 700ms cubic-bezier(0.2, 0.6, 0.2, 1);
  }
  /* 兜底：若观察器未在合理时间内标记，直接显示 */
  html.js-reveal.no-observer .reveal { opacity: 1; transform: none; }
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; }
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1080px) {
  :root { --gutter: 28px; }
  .specimen:nth-child(1) { grid-column: 1 / 9;  grid-row: 1; margin-top: 0; }
  .specimen:nth-child(2) { grid-column: 5 / 13; grid-row: 1; margin-top: clamp(40px, 6vw, 80px); }
  .specimen:nth-child(3) { grid-column: 1 / 9;  grid-row: 2; margin-top: 0; }
  .specimen:nth-child(4) { grid-column: 5 / 13; grid-row: 2; margin-top: clamp(40px, 6vw, 80px); }
  .statement-body { grid-column: 3 / 12; }
  .material-media { grid-column: 1 / 8; }
  .material-body { grid-column: 1 / 10; }
  .scenario-grid { grid-template-columns: repeat(2, 1fr); row-gap: 0; }
}

@media (max-width: 760px) {
  :root { --gutter: 20px; }

  .header-row { min-height: 58px; gap: 14px; padding: 0; }
  .brand-cn { display: none; }
  .header-tools { gap: 14px; }

  /* 单行页头 + 展开式导航，避免两行 sticky 长期占用视口 */
  .menu-toggle {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    min-height: 40px;
    margin-right: -4px;
    padding: 0 4px;
    font-size: 12px;
    letter-spacing: 0.12em;
    color: var(--ink);
  }
  .menu-toggle-icon { position: relative; display: block; width: 16px; height: 10px; }
  .menu-toggle-icon::before,
  .menu-toggle-icon::after {
    content: "";
    position: absolute;
    left: 0;
    width: 100%;
    height: 1px;
    background: currentColor;
    transition: transform 200ms ease, top 200ms ease;
  }
  .menu-toggle-icon::before { top: 1px; }
  .menu-toggle-icon::after { top: 8px; }
  .menu-toggle[aria-expanded="true"] .menu-toggle-icon::before { top: 5px; transform: rotate(45deg); }
  .menu-toggle[aria-expanded="true"] .menu-toggle-icon::after { top: 5px; transform: rotate(-45deg); }

  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 4px var(--gutter) 16px;
    background: var(--paper);
    border-bottom: 1px solid var(--hairline);
    box-shadow: 0 16px 32px rgba(10, 10, 10, 0.07);
  }
  .nav.is-open { display: flex; }
  .nav a { padding: 13px 0; font-size: 15px; border-bottom: 1px solid var(--hairline-soft); }
  .nav a::after { display: none; }

  .hero { min-height: 78vh; margin-bottom: 48px; }
  .hero-body { padding-bottom: 48px; }
  .hero-title { max-width: none; }
  .hero-lede { font-size: 15px; margin-top: 22px; }
  .hero-actions { margin-top: 28px; gap: 10px; }
  .btn { min-height: 44px; padding: 0 20px; font-size: 13px; }

  /* 偏移网格在窄屏收敛为单列，保持标本块纵向节奏 */
  .statement-grid,
  .works-head,
  .scenarios-head,
  .process-head,
  .material-grid,
  .contact-cta-grid,
  .footer-row { display: block; }

  .statement-index,
  .works-head-note,
  .scenarios-head .micro,
  .process-head .micro,
  .material-body .micro,
  .contact-cta-grid > .micro,
  .footer-brand,
  .footer-meta { margin-bottom: 18px; }

  .works-head .link-arrow { display: inline-flex; margin-top: 14px; }
  .statement-body { margin-top: 8px; }

  .specimen-grid { grid-template-columns: 1fr; row-gap: 40px; padding-top: 32px; }
  /* 必须重置桌面显式 grid-row，否则同排重叠会吞掉一半作品 */
  .specimen:nth-child(n) { grid-column: 1 / -1; grid-row: auto; margin-top: 0; }
  .specimen-media { aspect-ratio: 1 / 1; }
  .specimen-tag { opacity: 1; transform: none; position: static; border: 0; border-top: 1px solid var(--hairline); padding: 12px 0 0; background: none; }
  .specimen-caption { display: none; }

  .scenario-grid { grid-template-columns: 1fr; }
  .scenario { padding: 22px 0 24px; }

  .process-line { grid-template-columns: 1fr; }
  .process-step { padding: 22px 0 22px 22px; border-left: 1px solid var(--hairline); }
  .material .process-step { border-left-color: rgba(255,255,255,0.16); }
  .process-step::before { top: 0; right: auto; width: 7px; left: -4px; }
  .process-step::after { top: 0; left: -4px; transform: none; }

  .material-media img { aspect-ratio: 3 / 2; }
  .material-zh { font-size: 26px; }

  .contact-cta-actions { margin-top: 28px; gap: 20px; }
  .footer-links { flex-direction: row; flex-wrap: wrap; gap: 16px; align-items: flex-start; margin-top: 8px; }
}

/* ============================================================
   以下保留其余三页（Products / News / Contact）所需组件
   ============================================================ */
.page { padding: clamp(48px, 7vw, 90px) 0 clamp(70px, 9vw, 120px); }

.page-head {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  column-gap: var(--gutter);
  row-gap: 24px;
  align-items: end;
  padding-bottom: 34px;
  border-bottom: 1px solid var(--ink);
}
.page-head > div:first-child { grid-column: 1 / 8; }
.page-head .note-box { grid-column: 9 / 13; }
.page-head h1 {
  font-family: var(--serif);
  font-size: clamp(30px, 4.2vw, 56px);
  font-weight: 400;
  line-height: 1.18;
}
.eyebrow { margin: 0 0 16px; font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-50); }
.lede, .section-lede { margin: 20px 0 0; max-width: 54ch; font-size: 15px; line-height: 1.85; color: var(--ink-70); }
.page-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }

.section { padding: clamp(44px, 6vw, 76px) 0; }
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 20px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--hairline);
  margin-bottom: 30px;
  flex-wrap: wrap;
}
.section h2, .section h3 { font-family: var(--serif); font-weight: 400; line-height: 1.32; }
.section h2 { font-size: clamp(22px, 2.6vw, 32px); }
.section h3 { font-size: 19px; }

.note-box { padding: 18px 20px; border: 1px solid var(--hairline); font-size: 13px; line-height: 1.75; color: var(--ink-70); }
.note-box-link {
  display: inline-block;
  margin-top: 8px;
  border-bottom: 1px solid var(--ink);
  color: var(--ink);
  transition: opacity 200ms ease;
}
.note-box-link:hover { opacity: 0.6; }
.inline-link { border-bottom: 1px solid var(--hairline); color: var(--ink); }
.inline-link:hover { border-color: var(--ink); }

/* 无 JS 时的兜底清单 */
.nojs-block { padding: 26px 0; border-top: 1px solid var(--hairline-soft); }
.nojs-title { margin-bottom: 14px; font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-50); }
.nojs-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 6px 32px; margin-bottom: 16px; }
.nojs-list li { padding: 8px 0; border-bottom: 1px solid var(--hairline-soft); font-size: 14px; }
.nojs-block p:last-child { font-size: 13px; color: var(--ink-70); }

.footer-base {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 32px;
  padding-top: 18px;
  border-top: 1px solid var(--hairline-soft);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ink-50);
}

.filter-bar { display: inline-flex; flex-wrap: wrap; gap: 4px; }
.filter-bar button {
  border: 1px solid transparent;
  background: none;
  color: var(--ink-50);
  padding: 8px 14px;
  font-size: 13px;
  transition: color 200ms ease, border-color 200ms ease;
}
.filter-bar button.active { border-color: var(--ink); color: var(--ink); }
.filter-bar button:hover { color: var(--ink); }

.split-grid { display: grid; grid-template-columns: repeat(3, 1fr); column-gap: var(--gutter); row-gap: 32px; }
.info-card, .content-card, .contact-panel { padding: 0 0 24px; border-bottom: 1px solid var(--hairline-soft); }
.info-card h3, .content-card h3, .contact-panel h3 { margin: 12px 0 10px; }
.info-card p, .content-card p, .contact-panel p { font-size: 14px; line-height: 1.8; color: var(--ink-70); }

.step-grid { display: grid; grid-template-columns: repeat(4, 1fr); column-gap: var(--gutter); }
.step-card { padding-top: 24px; border-top: 1px solid var(--hairline); }
.step-index { margin: 0 0 12px; font-size: 11px; letter-spacing: 0.2em; color: var(--ink-50); }
.step-card h3 { margin: 0 0 10px; font-size: 18px; }
.step-card p { font-size: 13px; line-height: 1.75; color: var(--ink-70); }

.product-grid, .featured-grid { display: grid; grid-template-columns: repeat(4, 1fr); column-gap: var(--gutter); row-gap: 40px; }
.featured-grid { grid-template-columns: repeat(4, 1fr); }
.product-card, .feature-card { display: block; text-align: left; border: 0; background: none; width: 100%; }
.card-image { aspect-ratio: 4 / 5; overflow: hidden; background: var(--mount); border: 1px solid var(--hairline-soft); }
.feature-card .card-image { aspect-ratio: 1 / 1; }
.card-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 600ms cubic-bezier(0.2,0.6,0.2,1); }
.product-card:hover .card-image img, .feature-card:hover .card-image img { transform: scale(1.035); }
.card-body { padding-top: 14px; }
.card-body h3 { margin: 0 0 8px; font-family: var(--serif); font-size: 17px; font-weight: 400; }
.card-body p { margin: 0 0 10px; font-size: 13px; line-height: 1.7; color: var(--ink-50); }
.meta-row { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0 10px;
  border: 1px solid var(--hairline);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ink-50);
}

.news-feed { display: block; }
.news-post { padding-bottom: 48px; margin-bottom: 52px; border-bottom: 1px solid var(--hairline-soft); }
.news-post:last-child { margin-bottom: 0; padding-bottom: 0; border-bottom: 0; }
.post-head { display: grid; grid-template-columns: 148px minmax(0, 1fr); column-gap: var(--gutter); align-items: start; }
.post-date { padding-top: 7px; font-size: 11px; letter-spacing: 0.16em; color: var(--ink-50); }
.post-head h3 {
  grid-column: 2;
  margin: 0 0 14px;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(23px, 2.6vw, 34px);
  line-height: 1.32;
  letter-spacing: 0.01em;
}
.post-summary { grid-column: 2; max-width: 36em; margin: 0; font-size: 14.5px; line-height: 1.85; color: var(--ink-70); }
.post-gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 40px; }
.post-shot { margin: 0; }
.post-shot-frame {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  background: #0b0b0b;
  cursor: zoom-in;
  overflow: hidden;
}
.post-shot-frame img {
  display: block;
  width: 100%;
  height: auto;
  transition: transform 700ms cubic-bezier(0.2, 0.7, 0.3, 1);
}
.post-shot-frame:hover img { transform: scale(1.02); }
.post-shot-frame:focus-visible { outline: 1px solid var(--ink); outline-offset: 3px; }
.news-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 44px;
  padding-top: 24px;
  border-top: 1px solid var(--hairline);
}

.contact-grid { display: grid; grid-template-columns: repeat(12, 1fr); column-gap: var(--gutter); row-gap: 36px; }
.contact-panel { grid-column: 1 / 5; padding: 0 0 28px; border-bottom: 1px solid var(--hairline-soft); }
.form-card { grid-column: 6 / 13; padding-top: 4px; }
.contact-list { display: grid; gap: 0; margin-top: 22px; }
.contact-item { padding: 16px 0; border-top: 1px solid var(--hairline-soft); }
.contact-item strong { display: block; font-size: 14px; font-weight: 500; margin-bottom: 5px; }
.contact-item span { font-size: 13px; line-height: 1.7; color: var(--ink-50); }

.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px 24px; }
.form-head { margin-bottom: 24px; }
.form-head h2 {
  margin-bottom: 8px;
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 400;
  line-height: 1.35;
}
.form-head p { font-size: 13px; color: var(--ink-50); }
.field { display: grid; gap: 8px; }
.field.full { grid-column: 1 / -1; }
.field > span { font-size: 13px; }
.field input, .field textarea, .field select {
  width: 100%;
  border: 1px solid var(--hairline);
  border-radius: 0;
  background: var(--paper);
  padding: 11px 13px;
  font-size: 14px;
  transition: border-color 200ms ease;
}
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--ink); outline: none; }
.field textarea { min-height: 150px; resize: vertical; }
/* 蜜罐字段：只让机器人看见，人不可见也不可聚焦 */
.field-hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
.btn[disabled] { opacity: 0.5; cursor: progress; }
.field.invalid > span { color: #b3261e; }
.field.invalid input,
.field.invalid textarea,
.field.invalid select { border-color: #b3261e; }
.form-note { margin-top: 18px; font-size: 12px; line-height: 1.7; color: var(--ink-50); }
.status {
  margin-top: 18px;
  padding: 13px 15px;
  border: 1px solid var(--ink);
  font-size: 13px;
  line-height: 1.7;
  display: none;
}
.status.visible { display: block; }
.status:focus-visible { outline: 1px solid var(--ink); outline-offset: 3px; }
.status.is-error { border-color: #b3261e; color: #b3261e; }
.status.is-success { border-color: var(--ink); }

.dialog-panel {
  width: min(940px, calc(100vw - 30px));
  max-width: none;
  max-height: 88vh;
  padding: 0;
  border: 0;
  background: var(--paper);
  overflow: hidden;
}
.dialog-panel::backdrop { background: rgba(10, 10, 10, 0.72); }
.dialog-grid { display: grid; grid-template-columns: 1fr 1fr; max-height: 88vh; }
.dialog-media { background: var(--mount); min-height: 100%; }
.dialog-media img { width: 100%; height: 100%; object-fit: contain; }
.dialog-content { padding: 30px; overflow-y: auto; display: flex; flex-direction: column; justify-content: center; }
.dialog-top { display: flex; justify-content: space-between; gap: 16px; align-items: start; }
.dialog-close {
  border: 1px solid var(--hairline);
  min-width: 40px;
  min-height: 40px;
  font-size: 18px;
  line-height: 1;
  transition: border-color 200ms ease;
}
.dialog-close:hover { border-color: var(--ink); }
.dialog-content h3 { margin: 12px 0 10px; font-family: var(--serif); font-size: 24px; font-weight: 400; }
.dialog-content p { font-size: 14px; line-height: 1.8; color: var(--ink-70); }
.dialog-list { display: grid; gap: 0; margin-top: 22px; }
.dialog-list .row { padding: 14px 0; border-top: 1px solid var(--hairline-soft); font-size: 13px; }
.dialog-list strong { display: block; margin-bottom: 5px; font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-50); }
.dialog-foot { margin-top: 26px; }

@media (max-width: 1080px) {
  .product-grid, .featured-grid { grid-template-columns: repeat(3, 1fr); }
  .split-grid, .step-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-panel { grid-column: 1 / 7; }
  .form-card { grid-column: 7 / 13; }
  .page-head > div:first-child { grid-column: 1 / 9; }
  .page-head .note-box { grid-column: 1 / 9; }
}

@media (max-width: 760px) {
  .page-head, .split-grid, .step-grid, .contact-grid, .dialog-grid, .form-grid, .post-head { display: block; }
  .product-grid, .featured-grid { grid-template-columns: repeat(2, 1fr); gap: 28px 16px; }
  .split-grid > *, .step-grid > * { margin-bottom: 26px; }
  .contact-panel, .form-card { margin-bottom: 34px; }
  .field.full { grid-column: auto; }
  .dialog-content { padding: 22px; }
  .dialog-grid { display: block; max-height: none; }
  .dialog-panel { max-height: 88vh; overflow-y: auto; }
  .dialog-media { min-height: 0; }
  .dialog-media img { width: 100%; height: 40vh; object-fit: cover; }
  .page-actions { margin-top: 20px; }
  .nojs-list { grid-template-columns: 1fr; }
  .footer-base { flex-direction: column; gap: 6px; }
}
/* ============================================================
   实物图 — 散落样片墙（photos.html）
   故意不做等比网格：每张的宽度与上边距按 8 张一循环错开，
   图都按原始 3:4 完整显示，不裁切，靠留白和错位形成节奏。
   ============================================================ */
.wall {
  columns: 4;
  column-gap: clamp(16px, 2vw, 30px);
  margin-top: clamp(36px, 4.6vw, 62px);
}

.shot {
  break-inside: avoid;
  width: 100%;
  margin: 0 0 clamp(26px, 3.2vw, 48px);
}

.shot-frame {
  display: block;
  overflow: hidden;
  background: var(--mount);
  cursor: zoom-in;
}
.shot-frame img {
  width: 100%;
  height: auto;
  transition: transform 720ms cubic-bezier(0.2, 0.6, 0.2, 1);
}
.shot-frame:hover img { transform: scale(1.02); }
.shot-frame:focus-visible { outline: 1px solid var(--ink); outline-offset: 4px; }

/* 这一页不要页头，图片直接顶上来 */
body[data-page="photos"] .page { padding-top: clamp(20px, 2.4vw, 34px); }
body[data-page="photos"] .wall { margin-top: 0; }

/* 内容读不到时的兜底提示 */
.load-note {
  margin: 12px 0 0;
  font-size: 13px;
  color: var(--ink-50);
}

/* 错落节奏：宽度收放 + 上下偏移，右对齐的那几张让行尾不齐 */
@media (min-width: 761px) {
  .wall .shot:nth-child(8n + 1) { width: 100%; padding-top: 0; }
  .wall .shot:nth-child(8n + 2) { width: 84%; padding-top: 34px; margin-left: auto; }
  .wall .shot:nth-child(8n + 3) { width: 94%; padding-top: 0; }
  .wall .shot:nth-child(8n + 4) { width: 77%; padding-top: 52px; }
  .wall .shot:nth-child(8n + 5) { width: 90%; padding-top: 0; margin-left: auto; }
  .wall .shot:nth-child(8n + 6) { width: 100%; padding-top: 20px; }
  .wall .shot:nth-child(8n + 7) { width: 81%; padding-top: 0; margin-left: auto; }
  .wall .shot:nth-child(8n + 8) { width: 96%; padding-top: 44px; }
}

@media (max-width: 1100px) {
  .wall { columns: 3; }
}

@media (max-width: 760px) {
  .wall { columns: 2; column-gap: 14px; }
  .shot { margin-bottom: 22px; }
  .shot-frame:hover img { transform: none; }
}

/* 放大查看 */
.photo-dialog {
  width: min(92vw, 940px);
  max-width: none;
  max-height: 92vh;
  padding: 0;
  border: 0;
  background: transparent;
  overflow: visible;
}
.photo-dialog::backdrop { background: rgba(10, 10, 10, 0.86); }
.photo-dialog[open] { display: grid; place-items: center; }
.photo-dialog-inner {
  position: relative;
  width: fit-content;
  max-width: 100%;
  margin-inline: auto;
}
.photo-dialog img {
  width: auto;
  max-width: 100%;
  max-height: 82vh;
  margin-inline: auto;
  object-fit: contain;
}
.photo-dialog-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-top: 14px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 12px;
  letter-spacing: 0.04em;
}
.photo-dialog-bar b { font-weight: 400; color: #fff; }
.photo-dialog-actions { display: flex; gap: 8px; }
.photo-dialog-actions button {
  width: 34px;
  height: 34px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 999px;
  color: #fff;
  font-size: 15px;
  line-height: 1;
  display: grid;
  place-items: center;
  transition: background 200ms ease, border-color 200ms ease;
}
.photo-dialog-actions button:hover { background: rgba(255, 255, 255, 0.14); border-color: rgba(255, 255, 255, 0.6); }
.photo-dialog-close {
  position: absolute;
  top: -6px;
  right: -6px;
  width: 34px;
  height: 34px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
  font-size: 18px;
  line-height: 1;
  display: grid;
  place-items: center;
}
.photo-dialog-close:hover { background: rgba(255, 255, 255, 0.26); }

@media (prefers-reduced-motion: reduce) {
  .shot-frame img { transition: none; }
  .shot-frame:hover img { transform: none; }
}

@media (max-width: 760px) {
  .photo-dialog { width: 94vw; }
  .photo-dialog img { max-height: 70vh; }
  .photo-dialog-close { top: 6px; right: 6px; }
}

/* 新闻图片：窄屏收到两列，手机上留一点呼吸 */
@media (max-width: 860px) {
  .post-gallery { grid-template-columns: repeat(2, 1fr); gap: 14px; }
}
@media (max-width: 760px) {
  .post-head .post-date { margin-bottom: 10px; }
  .news-post { margin-bottom: 34px; padding-bottom: 28px; }
  .post-gallery { gap: 10px; margin-top: 26px; }
}