/* ==========================================================================
   住宅公园 · 官网样式表
   --------------------------------------------------------------------------
   结构：
     1. 设计令牌 (Design Tokens)
     2. 基础与重置 (Reset & Base)
     3. 通用工具 (Utilities)
     4. 页头 (Header)
     5. 首屏轮播 (Hero)
     6. 公司介绍 (Intro)
     7. 三大业务 (Services)
     8. 创始人 (Founder)
     9. 建造科技 (Technology)
    10. 文章库 (Article Library)
    11. 页脚 (Footer)
    12. 响应式 (Responsive)
    13. 动效与无障碍 (Motion & A11y)
   ========================================================================== */

/* 1. 设计令牌 ============================================================= */
:root {
  /* 品牌色 */
  --ink: #29433e;           /* 深绿主色：暗色区块背景 / 正文文字 / 顶部描边 */
  --paper: #f2efe7;         /* 米白纸张底色 */
  --white: #fbfaf6;         /* 卡片白 */
  --orange: #ee5b36;        /* 品牌橙：强调色 */
  --lime: #badc5a;          /* 荧光绿：暗色区块上的点缀 */
  --muted: #687079;         /* 次级文字 */
  --line: #c9c7c0;          /* 分隔线 */

  /* 暗色区块（深绿主题）派生色 */
  --green-700: #35534d;     /* 卡片底色 */
  --green-hover: #242b31;   /* 卡片 hover（近黑） */
  --divider-dark: #3d444a;  /* 暗区块分隔线 */
  --divider-dark-2: #424a50;
  --text-dim: #aeb3b7;      /* 暗区块次级文字 */
  --text-dim-2: #d5d7d8;
  --text-dim-3: #9fa6ab;

  /* 品牌名文字 */
  --brand-red: #df634f;

  /* 排版 */
  --font-sans: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;

  /* 节奏 */
  --header-h: 76px;
  --pad-x: 7vw;
}

/* 2. 基础与重置 =========================================================== */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  /* 固定页头 + 锚点跳转时，给内容留出呼吸空间，避免标题被遮挡 */
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-tap-highlight-color: transparent;
}

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

img {
  display: block;
  width: 100%;
  height: auto;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

h1 {
  font-size: clamp(48px, 6vw, 88px);
  line-height: 1.08;
  margin: 0 0 28px;
  font-weight: 850;
}

h2 {
  font-size: clamp(36px, 4.2vw, 64px);
  line-height: 1.16;
  margin: 18px 0;
}

::selection {
  background: var(--orange);
  color: #fff;
}

/* 3. 通用工具 ============================================================= */
.section-pad {
  padding: 120px var(--pad-x);
}

.section-label {
  font-size: 12px;
  font-weight: 800;
  color: var(--orange);
  text-transform: uppercase;
  letter-spacing: 0;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 40px;
  margin-bottom: 70px;
}

.section-head h2 {
  max-width: 850px;
  margin-bottom: 0;
}

.section-head > p {
  max-width: 400px;
  color: #9ba1a6;
}

/* 按钮 */
.button {
  min-height: 54px;
  padding: 0 24px;
  border: 0;
  border-radius: 2px;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  font-weight: 800;
  transition: transform 0.2s ease, filter 0.2s ease, box-shadow 0.2s ease;
}

.button.primary {
  background: var(--orange);
  color: #fff;
}

.button.primary:hover {
  filter: brightness(0.96);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(238, 91, 54, 0.28);
}

.button:active {
  transform: translateY(0);
}

.text-link {
  padding: 14px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.5);
}

/* 滚动进场动画（仅在 JS 可用时启用，见 .js 前缀） */
.js .reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* 4. 页头 ================================================================ */
.site-header {
  height: var(--header-h);
  padding: 0 var(--pad-x);
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  background: rgba(41, 67, 62, 0.9);
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(14px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 800;
  color: var(--brand-red);
}

.logo-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  overflow: hidden;
  flex: 0 0 auto;
}

.logo-mark img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.brand-name {
  font-size: 30px;
  font-weight: 900;
  color: var(--brand-red);
  line-height: 1;
  text-shadow: 0 2px 5px rgba(0, 0, 0, 0.24);
}

/* 页头只保留 Logo 图形，隐藏文字名 */
.site-header .brand-name {
  display: none;
}

.desktop-nav {
  display: flex;
  gap: 25px;
  font-size: 14px;
  color: #fff;
}

.desktop-nav a {
  position: relative;
}

.desktop-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -8px;
  height: 2px;
  background: var(--orange);
  transition: right 0.25s ease;
}

.desktop-nav a:hover::after,
.desktop-nav a:focus-visible::after {
  right: 0;
}

.language-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
  margin-right: 24px;
  padding: 7px 10px;
  border: 1px solid rgba(255, 255, 255, 0.42);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  font-size: 12px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0.04em;
  transition: background 0.2s ease;
}

.language-toggle:hover {
  background: rgba(255, 255, 255, 0.16);
}

.language-option {
  opacity: 0.58;
  transition: opacity 0.2s ease, color 0.2s ease;
}

.language-option.active {
  opacity: 1;
  color: var(--lime);
}

.language-divider {
  opacity: 0.45;
}

.menu-button,
.mobile-menu {
  display: none;
}

/* 5. 首屏轮播 ============================================================ */
.hero {
  height: min(860px, 92vh);
  min-height: 680px;
  position: relative;
  color: #fff;
  overflow: hidden;
  padding-top: var(--header-h);
}

.hero-slider {
  position: absolute;
  inset: 0;
}

.hero-slide {
  position: absolute;
  inset: 0;
  margin: 0;
  opacity: 0;
  transition: opacity 0.8s ease;
  pointer-events: none;
}

.hero-slide.active {
  opacity: 1;
  pointer-events: auto;
}

.hero-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-slide figcaption {
  position: absolute;
  right: 4vw;
  bottom: 74px;
  z-index: 3;
  color: #fff;
  font-size: 12px;
  font-weight: 700;
}

.hero-slide figcaption span {
  color: var(--lime);
  margin-right: 8px;
}

.hero-shade {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    90deg,
    rgba(41, 67, 62, 0.94) 0%,
    rgba(41, 67, 62, 0.7) 43%,
    rgba(41, 67, 62, 0.12) 76%
  );
}

.hero-content {
  position: absolute;
  left: var(--pad-x);
  top: 50%;
  transform: translateY(-52%);
  max-width: 780px;
  z-index: 2;
}

.eyebrow {
  font-size: 13px;
  font-weight: 700;
  margin: 0 0 26px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.eyebrow span {
  width: 28px;
  height: 3px;
  background: var(--orange);
}

.hero-copy {
  font-size: 18px;
  max-width: 650px;
  color: rgba(255, 255, 255, 0.78);
  margin: 0 0 35px;
}

.hero-actions {
  display: flex;
  gap: 30px;
  align-items: center;
}

.hero-proof {
  position: absolute;
  left: var(--pad-x);
  bottom: 30px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  font-weight: 700;
  z-index: 2;
}

.hero-proof i {
  width: 28px;
  height: 1px;
  background: rgba(255, 255, 255, 0.55);
}

.slider-controls {
  position: absolute;
  right: 4vw;
  bottom: 25px;
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 13px;
}

.slider-arrow {
  width: 34px;
  height: 34px;
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: 0;
  background: rgba(41, 67, 62, 0.35);
  color: #fff;
  font-size: 23px;
  line-height: 1;
  padding: 0;
}

.slider-dots {
  display: flex;
  gap: 7px;
}

.slider-dots button {
  width: 22px;
  height: 3px;
  border: 0;
  border-radius: 0;
  background: rgba(255, 255, 255, 0.4);
  padding: 0;
}

.slider-dots button.active {
  background: var(--orange);
}

/* 6. 公司介绍 ============================================================ */
.intro-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 9vw;
  align-items: flex-start;
}

.intro h2 {
  margin-top: 44px;
}

.intro-copy {
  padding-top: 56px;
}

.intro-copy > p {
  font-size: 18px;
  color: #4e555b;
  margin: 0;
  max-width: 620px;
}

.stats {
  margin-top: 56px;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.stats div {
  padding: 28px 14px 0 0;
}

.stats strong {
  font-size: 42px;
  display: block;
  line-height: 1;
}

.stats strong span {
  font-size: 16px;
  color: var(--orange);
}

.stats small {
  color: var(--muted);
}

/* 7. 三大业务 ============================================================ */
.services {
  background: var(--ink);
  color: var(--white);
}

.service-list {
  border-top: 1px solid var(--divider-dark);
}

.service-row {
  position: relative;
  display: grid;
  grid-template-columns: 60px 1fr 1fr;
  gap: 4vw;
  align-items: center;
  padding: 60px 0;
  border-bottom: 1px solid var(--divider-dark);
}

.service-row.reverse .service-visual {
  order: 3;
}

.service-row.reverse .service-copy {
  order: 2;
}

.service-number {
  font-size: 13px;
  color: var(--orange);
  align-self: flex-start;
}

.service-visual {
  overflow: hidden;
  aspect-ratio: 5 / 3;
}

.service-visual img {
  height: 100%;
  object-fit: cover;
  transition: transform 0.55s ease;
}

.service-row:hover .service-visual img {
  transform: scale(1.035);
}

.service-copy {
  padding: 10px 0;
}

.service-kicker {
  font-size: 12px;
  color: var(--lime);
  font-weight: 800;
}

.service-copy h3 {
  font-size: clamp(28px, 3vw, 46px);
  line-height: 1.2;
  margin: 18px 0;
}

.service-copy > p {
  color: var(--text-dim);
}

.service-copy ul {
  list-style: none;
  padding: 20px 0 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  border-top: 1px solid var(--divider-dark);
}

.service-copy li {
  font-size: 12px;
  color: var(--text-dim-2);
}

.service-copy li::before {
  content: "+ ";
  color: var(--orange);
}

/* 施工对接的「关键词 + 说明」列表 */
.service-copy .build-options li {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.service-copy .build-options li::before {
  content: "";
}

.build-options strong {
  color: var(--orange);
  font-size: 11px;
}

.build-options span {
  color: var(--text-dim-2);
  font-size: 12px;
  line-height: 1.45;
}

/* 案例卡片 */
.service-case {
  margin-top: 28px;
  padding: 22px;
  background: var(--green-700);
  border-left: 3px solid var(--orange);
}

.service-case > span {
  display: block;
  color: var(--lime);
  font-size: 10px;
  font-weight: 800;
  margin-bottom: 8px;
}

.service-case > strong {
  display: block;
  color: #fff;
  font-size: 18px;
}

.service-case > p {
  color: var(--text-dim);
  font-size: 13px;
  margin: 8px 0 16px;
}

.service-case > div {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.service-case em {
  font-style: normal;
  font-size: 10px;
  color: var(--text-dim-2);
  border: 1px solid #4b535a;
  padding: 4px 8px;
}

/* 二维码咨询条 */
.service-qr {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 18px;
  align-items: center;
  margin-top: 18px;
  padding: 16px;
  border: 1px solid var(--divider-dark-2);
  background: var(--green-700);
}

.service-qr strong {
  display: block;
  color: #fff;
  font-size: 15px;
}

.service-qr p {
  margin: 5px 0 0;
  color: var(--text-dim-3);
  font-size: 12px;
  line-height: 1.55;
}

.qr-placeholder.image-qr {
  width: 110px;
  height: 110px;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px;
  overflow: hidden;
  border: 0;
}

.qr-placeholder.image-qr img {
  display: block;
  object-fit: contain;
  object-position: center;
  width: 100%;
  height: 100%;
  max-width: 100%;
  max-height: 100%;
}

/* 设计案例（子案例卡） */
.design-case-visual {
  aspect-ratio: 16 / 9;
}

.design-case-visual img {
  object-position: center;
}

.design-case-mini {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 16px;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--divider-dark-2);
}

.design-case-mini img {
  width: 150px;
  height: 100px;
  object-fit: cover;
}

.design-case-mini span {
  display: block;
  color: var(--lime);
  font-size: 10px;
  font-weight: 800;
}

.design-case-mini strong {
  display: block;
  color: #fff;
  font-size: 16px;
  margin: 3px 0;
}

.design-case-mini p {
  color: var(--text-dim);
  font-size: 12px;
  margin: 0 0 7px;
}

.design-case-mini em {
  font-style: normal;
  font-size: 10px;
  color: var(--text-dim-2);
  margin-right: 12px;
}

.design-case-mini em::before {
  content: "+ ";
  color: var(--orange);
}

/* 施工落地画廊 */
.build-main-visual {
  aspect-ratio: 4 / 5;
}

.build-main-visual img {
  object-position: center 42%;
}

.training-main-visual {
  aspect-ratio: 16 / 10;
}

.training-main-visual img {
  object-position: center;
}

.build-gallery,
.training-gallery {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 18px;
}

.build-gallery figure,
.training-gallery figure {
  position: relative;
  height: 145px;
  margin: 0;
  overflow: hidden;
  background: #252c32;
}

.build-gallery img,
.training-gallery img {
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s ease;
}

.build-gallery figure:hover img,
.training-gallery figure:hover img {
  transform: scale(1.04);
}

.build-gallery figcaption,
.training-gallery figcaption {
  position: absolute;
  inset: auto 0 0;
  padding: 28px 12px 10px;
  background: linear-gradient(transparent, rgba(13, 17, 20, 0.9));
  color: #fff;
}

.build-gallery figcaption span,
.training-gallery figcaption span {
  display: block;
  color: var(--lime);
  font-size: 9px;
  font-weight: 800;
}

.build-gallery figcaption strong,
.training-gallery figcaption strong {
  display: block;
  font-size: 12px;
}

/* 8. 创始人 ============================================================== */
.team {
  background: var(--white);
}

.team-head > p {
  color: var(--muted);
}

.founder-layout {
  display: grid;
  grid-template-columns: minmax(320px, 0.8fr) 1.2fr;
  gap: 7vw;
  align-items: stretch;
}

.founder-card {
  max-width: 560px;
}

.leader-card {
  border-top: 1px solid var(--ink);
  padding-top: 16px;
}

.leader-portrait {
  height: 390px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.portrait-orange {
  background: var(--orange);
}

.leader-info {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  border-bottom: 1px solid var(--line);
  padding: 20px 0;
}

.leader-info p {
  font-size: 24px;
  font-weight: 800;
  margin: 0;
}

.leader-info span {
  font-size: 12px;
  color: var(--orange);
  font-weight: 700;
}

.leader-info strong {
  font-size: 12px;
  color: #a5aaad;
}

.leader-bio {
  color: var(--muted);
  font-size: 14px;
  min-height: 112px;
  margin: 22px 0;
}

.leader-card ul {
  list-style: none;
  margin: 0;
  padding: 16px 0;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 7px 18px;
}

.leader-card li {
  font-size: 11px;
  font-weight: 700;
}

.leader-card li::before {
  content: "+ ";
  color: var(--orange);
}

.team-note {
  font-size: 11px;
  color: #92979a;
  margin: 28px 0 0;
}

.founder-card .leader-portrait {
  height: 480px;
}

.founder-card .leader-bio {
  min-height: 0;
}

.founder-photo {
  background: #fff;
}

.founder-photo img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  z-index: 1;
}

.founder-quote {
  margin: 0;
  padding: 70px 5vw;
  background: var(--ink);
  color: #fff;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.founder-quote > span {
  font-size: 10px;
  color: var(--orange);
  font-weight: 800;
}

.founder-quote > p {
  font-size: clamp(24px, 2.7vw, 40px);
  line-height: 1.5;
  margin: 28px 0 48px;
}

.founder-quote > strong {
  font-size: 18px;
}

.founder-quote > small {
  color: #939ba0;
  margin-top: 3px;
}

/* 9. 建造科技 ============================================================ */
.technology {
  background: #e8e4dc;
}

.technology-head > p {
  color: var(--muted);
}

.technology-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.technology-item {
  background: var(--white);
  border-top: 3px solid var(--ink);
}

.technology-media {
  height: 300px;
  position: relative;
  overflow: hidden;
  display: grid;
  place-items: center;
  background: #cfd7d6;
}

.technology-copy {
  padding: 32px;
}

.technology-copy > p {
  font-size: 9px;
  color: var(--orange);
  font-weight: 800;
  margin: 0;
}

.technology-copy h3 {
  font-size: 34px;
  margin: 7px 0;
}

.technology-copy > strong {
  display: block;
  font-size: 17px;
  margin-bottom: 14px;
}

/* 描述文字（排除「阅读链接」这类按钮式 span） */
.technology-copy > span:not(.technology-read-link) {
  display: block;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
  min-height: 76px;
}

.technology-copy ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  border-top: 1px solid var(--line);
  margin: 24px 0 0;
  padding: 18px 0 0;
}

.technology-copy li {
  font-size: 11px;
  font-weight: 700;
}

.technology-copy li::before {
  content: "+ ";
  color: var(--orange);
}

.media-status {
  position: absolute;
  left: 18px;
  bottom: 16px;
  background: var(--ink);
  color: #fff;
  padding: 6px 10px;
  font-size: 10px;
  font-weight: 700;
}

/* 建筑创意（未来住宅动画占位） */
.future-media {
  background: linear-gradient(160deg, #bfd4d5 0%, #e8e3d8 62%, #9fac9d 62%);
}

.future-house {
  width: 260px;
  height: 140px;
  position: relative;
  border: 3px solid rgba(22, 27, 32, 0.8);
  border-top: 0;
  transform: perspective(500px) rotateX(3deg);
}

.future-house::before {
  content: "";
  position: absolute;
  left: 28px;
  right: 28px;
  top: -70px;
  height: 70px;
  border: 3px solid rgba(22, 27, 32, 0.8);
  border-bottom: 0;
  transform: skewX(-24deg);
}

.future-house i {
  position: absolute;
  bottom: 0;
  width: 50px;
  height: 82px;
  border: 2px solid rgba(22, 27, 32, 0.65);
  background: rgba(255, 255, 255, 0.32);
}

.future-house i:nth-child(1) {
  left: 22px;
}

.future-house i:nth-child(2) {
  left: 104px;
  width: 46px;
  height: 105px;
}

.future-house i:nth-child(3) {
  right: 22px;
}

/* 专利与著作权 */
.rights-media {
  background: var(--ink);
}

.certificate-stack {
  width: 180px;
  height: 210px;
  position: relative;
}

.certificate-stack i {
  position: absolute;
  inset: 0;
  background: var(--paper);
  border: 8px solid #fff;
  box-shadow: 0 10px 35px rgba(0, 0, 0, 0.25);
}

.certificate-stack i:first-child {
  transform: rotate(-8deg) translate(-18px, 7px);
  opacity: 0.55;
}

.certificate-stack i:nth-child(2) {
  transform: rotate(5deg) translate(15px, 3px);
  opacity: 0.75;
}

.certificate-stack strong {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: var(--orange);
  font-size: 56px;
  z-index: 2;
}

.certificate-gallery {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 20px;
}

.certificate-gallery a {
  display: grid;
  grid-template-columns: 62px 1fr;
  gap: 8px;
  align-items: center;
  padding: 8px;
  background: #eef0ec;
  color: var(--ink);
  transition: transform 0.2s ease;
}

.certificate-gallery a:hover {
  transform: translateY(-2px);
}

.certificate-gallery img {
  width: 62px;
  height: 78px;
  object-fit: cover;
  object-position: center;
}

.certificate-gallery b {
  font-size: 11px;
  line-height: 1.4;
}

.certificate-gallery small {
  grid-column: 2;
  color: var(--orange);
  font-size: 10px;
}

.certificate-strip {
  display: flex;
  gap: 8px;
  margin-top: 12px;
  overflow: hidden;
}

.certificate-strip img {
  width: calc((100% - 16px) / 3);
  height: 70px;
  object-fit: cover;
  object-position: center;
}

.technology-copy .certificate-gallery + .certificate-strip {
  border-top: 1px solid var(--line);
  padding-top: 12px;
}

/* 视频链接列表 */
.video-list {
  display: grid;
  gap: 8px;
  margin-top: 20px;
}

.video-link {
  display: grid;
  grid-template-columns: 38px 1fr auto;
  gap: 12px;
  align-items: center;
  padding: 13px 14px;
  background: var(--green-700);
  color: #fff;
  border-left: 3px solid var(--orange);
  transition: transform 0.2s ease, background 0.2s ease;
}

.video-link:hover {
  transform: translateY(-2px);
  background: var(--green-hover);
}

.video-link i {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid #60676c;
  border-radius: 50%;
  font-style: normal;
  font-size: 11px;
}

.video-link b {
  font-size: 13px;
}

.video-link small {
  font-size: 10px;
  color: var(--lime);
  white-space: nowrap;
}

/* 文章卡片 */
.technology-article-card {
  min-width: 0;
}

.technology-card-link {
  display: block;
  height: 100%;
  color: inherit;
}

.technology-card-link:hover .article-media {
  background: var(--green-700);
}

.article-media {
  background: var(--ink);
  transition: background 0.25s ease;
}

.article-symbol {
  width: 180px;
  height: 150px;
  position: relative;
  border: 2px solid rgba(255, 255, 255, 0.8);
  display: grid;
  place-items: center;
  transform: skewY(-4deg);
}

.article-symbol span {
  font-size: 42px;
  letter-spacing: 0.08em;
  color: var(--lime);
  font-weight: 900;
  transform: skewY(4deg);
}

.article-symbol i {
  position: absolute;
  left: 18px;
  right: 18px;
  height: 1px;
  background: rgba(255, 255, 255, 0.35);
}

.article-symbol i:nth-child(2) {
  top: 28px;
}

.article-symbol i:nth-child(3) {
  bottom: 28px;
}

.article-symbol i:nth-child(4) {
  left: 50%;
  top: 18px;
  bottom: 18px;
  width: 1px;
  height: auto;
}

.technology-read-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 22px;
  color: var(--orange);
  font-size: 12px;
  font-weight: 800;
}

.technology-read-link b {
  font-size: 15px;
}

.technology-note {
  margin-top: 22px;
  border-top: 1px solid var(--line);
  padding-top: 22px;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 30px;
}

.technology-note span {
  font-size: 11px;
  color: var(--orange);
  font-weight: 800;
}

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

/* 10. 文章库 ============================================================= */
.article-page {
  background: var(--paper);
}

.article-library {
  padding-top: 150px;
  min-height: calc(100vh - 260px);
}

.article-library-head {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 8vw;
  align-items: flex-end;
  padding-bottom: 58px;
  border-bottom: 1px solid var(--line);
}

.article-library-head h1 {
  color: var(--ink);
  font-size: clamp(48px, 6vw, 86px);
  line-height: 1.04;
  margin: 16px 0 0;
}

.article-library-intro {
  max-width: 430px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.8;
  margin: 0 0 24px;
}

.back-link {
  font-size: 12px;
  font-weight: 800;
  color: var(--orange);
}

.back-link:hover {
  text-decoration: underline;
}

.article-index {
  display: grid;
  grid-template-columns: 120px 70px 1fr;
  align-items: center;
  gap: 18px;
  border-bottom: 1px solid var(--line);
  padding: 22px 0;
}

.article-index span {
  font-size: 10px;
  color: var(--orange);
  font-weight: 800;
}

.article-index strong {
  font-size: 34px;
  color: var(--ink);
}

.article-index p {
  margin: 0;
  font-size: 15px;
  font-weight: 800;
}

.standalone-article {
  margin-top: 52px;
  padding: 42px 46px;
  background: var(--white);
  border-top: 3px solid var(--ink);
}

.standalone-article .article-heading h2 {
  font-size: clamp(30px, 3.4vw, 52px);
  line-height: 1.18;
  margin: 8px 0 0;
}

.article-future-note {
  display: flex;
  justify-content: space-between;
  gap: 30px;
  margin-top: 34px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
}

.article-future-note span {
  font-size: 11px;
  color: var(--orange);
  font-weight: 800;
}

.article-future-note p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

/* 文章正文（独立文章页使用） */
.article-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 16px;
}

.article-meta span {
  font-size: 10px;
  color: var(--orange);
  font-weight: 800;
}

.article-meta a {
  font-size: 11px;
  font-weight: 800;
  color: var(--orange);
}

.article-meta a:hover {
  text-decoration: underline;
}

.article-heading {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 8vw;
  align-items: flex-end;
  padding: 30px 0 28px;
}

.article-heading > p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

.article-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 5vw;
  border-top: 1px solid var(--line);
}

.article-body section {
  padding: 30px 0;
  border-bottom: 1px solid var(--line);
}

.article-body section:nth-child(odd) {
  padding-right: 3vw;
  border-right: 1px solid var(--line);
}

.article-body section:nth-child(even) {
  padding-left: 3vw;
}

.article-body h4 {
  font-size: 18px;
  margin: 0 0 14px;
}

.article-body p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.9;
  margin: 0 0 12px;
}

.article-body p:last-child {
  margin-bottom: 0;
}

.article-modules {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.article-modules div {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px;
  background: #eef0ec;
}

.article-modules strong {
  font-size: 11px;
  color: var(--orange);
}

.article-modules span {
  font-size: 12px;
  font-weight: 800;
  line-height: 1.5;
}

.article-modules small {
  color: var(--muted);
  font-size: 10px;
}

.article-points {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 14px;
}

.article-points li {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 12px;
}

.article-points strong {
  font-size: 12px;
}

.article-points span {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.6;
}

.article-highlight {
  padding: 14px 16px;
  background: #eef0ec;
  border-left: 3px solid var(--orange);
  font-weight: 800;
  color: var(--ink);
}

/* 11. 页脚 =============================================================== */
footer {
  background: var(--ink);
  color: #fff;
  padding: 70px var(--pad-x) 30px;
}

.footer-main {
  display: grid;
  grid-template-columns: 1fr 2fr;
  align-items: center;
  padding-bottom: 70px;
}

.footer-main p {
  color: #969da2;
}

.footer-bottom {
  border-top: 1px solid #343a3f;
  padding-top: 25px;
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: #82898e;
}

/* 12. 响应式 ============================================================= */
@media (max-width: 1100px) {
  .technology-grid {
    grid-template-columns: 1fr 1fr;
  }

  .technology-article-card {
    grid-column: 1 / -1;
  }

  .technology-article-card .technology-copy {
    max-width: 700px;
  }
}

@media (max-width: 900px) {
  .desktop-nav {
    display: none;
  }

  .menu-button {
    display: flex;
    width: 44px;
    height: 44px;
    border: 0;
    background: transparent;
    flex-direction: column;
    justify-content: center;
    gap: 7px;
  }

  .menu-button span {
    width: 22px;
    height: 2px;
    background: #fff;
    margin-left: auto;
  }

  .mobile-menu {
    display: flex;
    position: absolute;
    left: 0;
    right: 0;
    top: var(--header-h);
    background: rgba(242, 239, 231, 0.98);
    color: var(--ink);
    padding: 24px 7vw 34px;
    flex-direction: column;
    gap: 20px;
    transform: translateY(-120%);
    transition: transform 0.3s ease;
    z-index: -1;
    border-bottom: 1px solid var(--line);
  }

  .mobile-menu.open {
    transform: none;
  }

  .hero {
    height: 760px;
    min-height: 0;
  }

  .hero-content {
    left: 7vw;
    right: 7vw;
  }

  .hero-proof {
    display: none;
  }

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

  .intro-copy {
    padding-top: 0;
  }

  .section-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .service-row {
    grid-template-columns: 38px 1fr;
    gap: 18px;
  }

  .service-visual {
    grid-column: 2;
  }

  .service-copy {
    grid-column: 2;
  }

  .service-row.reverse .service-visual,
  .service-row.reverse .service-copy {
    order: initial;
  }

  .founder-layout {
    grid-template-columns: 1fr 1fr;
    gap: 22px;
  }

  .founder-card {
    max-width: none;
  }

  .founder-card .leader-portrait {
    height: 400px;
  }

  .founder-quote {
    padding: 48px 36px;
  }

  .technology-media {
    height: 250px;
  }

  .technology-copy {
    padding: 26px;
  }

  .future-house {
    transform: scale(0.82);
  }

  .article-library-head {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .article-library-intro {
    max-width: 600px;
  }

  .article-index {
    grid-template-columns: 100px 55px 1fr;
  }

  .article-heading {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .article-body {
    grid-template-columns: 1fr;
  }

  .article-body section:nth-child(odd) {
    padding-right: 0;
    border-right: 0;
  }

  .article-body section:nth-child(even) {
    padding-left: 0;
  }

  .footer-main {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .footer-bottom {
    gap: 15px;
    flex-wrap: wrap;
  }

  .language-toggle {
    margin-left: auto;
    margin-right: 12px;
  }
}

@media (max-width: 560px) {
  .site-header {
    padding: 0 20px;
  }

  .hero {
    height: 100vh;
    min-height: 650px;
  }

  .hero-slide img {
    object-position: center;
  }

  .hero-slide figcaption {
    right: 20px;
    bottom: 76px;
  }

  .slider-controls {
    right: 20px;
    bottom: 27px;
  }

  .hero-proof {
    display: none;
  }

  .hero-content {
    top: auto;
    bottom: 54px;
    transform: none;
    left: 20px;
    right: 20px;
  }

  .hero-content h1 {
    font-size: 44px;
  }

  .hero-copy {
    font-size: 15px;
  }

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

  .section-pad {
    padding: 84px 20px;
  }

  .intro-grid {
    gap: 12px;
  }

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

  .stats div {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
  }

  .stats strong {
    font-size: 36px;
  }

  .service-row {
    grid-template-columns: 25px 1fr;
    padding: 42px 0;
  }

  .service-copy ul {
    grid-template-columns: 1fr;
  }

  .service-qr {
    grid-template-columns: 90px 1fr;
    padding: 12px;
    gap: 14px;
  }

  .qr-placeholder.image-qr {
    width: 90px;
    height: 90px;
  }

  .design-case-mini {
    grid-template-columns: 110px 1fr;
  }

  .design-case-mini img {
    width: 110px;
    height: 84px;
  }

  .design-case-mini strong {
    font-size: 14px;
  }

  .build-gallery,
  .training-gallery {
    grid-template-columns: 1fr;
  }

  .build-gallery figure,
  .training-gallery figure {
    height: 190px;
  }

  .founder-layout {
    grid-template-columns: 1fr;
  }

  .founder-quote {
    padding: 44px 24px;
  }

  .founder-quote > p {
    font-size: 23px;
  }

  .service-case {
    padding: 18px;
  }

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

  .technology-media {
    height: 240px;
  }

  .technology-copy > span:not(.technology-read-link) {
    min-height: 0;
  }

  .technology-note {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
  }

  .certificate-gallery {
    grid-template-columns: 1fr;
  }

  .certificate-gallery a {
    grid-template-columns: 72px 1fr;
  }

  .certificate-gallery img {
    width: 72px;
    height: 88px;
  }

  .video-link {
    grid-template-columns: 34px 1fr;
  }

  .video-link small {
    grid-column: 2;
    white-space: normal;
  }

  .article-symbol {
    width: 160px;
    height: 140px;
  }

  .brand-name {
    font-size: 24px;
  }

  .logo-mark {
    width: 36px;
    height: 36px;
  }

  .article-library {
    padding-top: 120px;
  }

  .article-library-head {
    padding-bottom: 38px;
  }

  .article-library-head h1 {
    font-size: 52px;
  }

  .article-library-intro {
    font-size: 16px;
  }

  .article-index {
    grid-template-columns: 1fr 46px;
    gap: 8px;
  }

  .article-index p {
    grid-column: 1 / -1;
  }

  .standalone-article {
    margin-top: 34px;
    padding: 26px 20px;
  }

  .article-future-note {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

  .article-heading {
    padding: 24px 0;
  }

  .article-body section {
    padding: 24px 0;
  }

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

  .article-points li {
    grid-template-columns: 1fr;
    gap: 3px;
  }

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

  footer {
    padding: 60px 20px 24px;
  }
}

/* 13. 动效与无障碍 ======================================================= */
/* 键盘聚焦可见性 */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
}

/* 跳转链接（仅键盘触发时显示） */
.skip-link {
  position: fixed;
  left: 16px;
  top: 16px;
  z-index: 100;
  padding: 12px 18px;
  background: var(--ink);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  transform: translateY(-200%);
  transition: transform 0.2s ease;
}

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

/* 尊重系统「减少动态效果」偏好 */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

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

  .hero-slide {
    transition: none;
  }

  .button,
  .service-visual img,
  .build-gallery img,
  .training-gallery img,
  .video-link,
  .certificate-gallery a,
  .technology-card-link .article-media {
    transition: none;
  }
}