/* ============================================
   牛牛部落格 — 摄影工作室 主样式
   Apollo 温暖专业设计风格
   ============================================ */

:root {
  /* 颜色 */
  --color-earth-umber: #3c261c;
  --color-terracotta-flame: #e97451;
  --color-deep-violet: #4a43dd;
  --color-pale-ochre: #f7efc5;
  --color-platinum-frost: #dddedf;
  --color-jet-black: #000000;
  --color-warm-linen: #f9f8f0;
  --color-peach-cream: #fcede8;

  /* 字体族 */
  --font-monasans: 'MonaSans', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  --font-paradigm-pro: 'paradigm-pro', Georgia, 'Times New Roman', serif;

  /* 排版比例 */
  --text-caption: 12px;
  --text-body-sm: 14px;
  --text-body: 18px;
  --text-subheading: 20px;
  --text-heading-sm: 32px;
  --text-heading: 36px;
  --text-display: 47px;

  /* 字重 */
  --fw-light: 300;
  --fw-regular: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;

  /* 间距 */
  --sp-10: 10px;
  --sp-14: 14px;
  --sp-17: 17px;
  --sp-18: 18px;
  --sp-20: 20px;
  --sp-23: 23px;
  --sp-30: 30px;
  --sp-34: 34px;
  --sp-40: 40px;
  --sp-45: 45px;
  --sp-60: 60px;
  --sp-68: 68px;
  --sp-90: 90px;

  /* 圆角 */
  --radius: 3px;

  /* 布局 */
  --section-gap: 68px;
  --card-padding: 45px;
  --container-max: 1200px;
}

/* ============================================
   Reset
   ============================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-monasans);
  font-size: var(--text-body);
  line-height: 1.49;
  letter-spacing: 0.54px;
  font-weight: var(--fw-regular);
  color: var(--color-earth-umber);
  background-color: var(--color-warm-linen);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--color-earth-umber);
  text-decoration: none;
  transition: all 0.25s ease;
}

a:hover {
  text-decoration: underline;
}

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

/* ============================================
   排版
   ============================================ */
.display {
  font-family: var(--font-paradigm-pro);
  font-weight: var(--fw-light);
  font-size: var(--text-display);
  line-height: 0.97;
  letter-spacing: 3.76px;
}

.heading {
  font-family: var(--font-monasans);
  font-weight: var(--fw-semibold);
  font-size: var(--text-heading);
  line-height: 1.17;
  letter-spacing: 1.08px;
}

.heading-sm {
  font-family: var(--font-monasans);
  font-weight: var(--fw-medium);
  font-size: var(--text-heading-sm);
  line-height: 1.35;
  letter-spacing: 0.96px;
}

.subheading {
  font-family: var(--font-monasans);
  font-weight: var(--fw-medium);
  font-size: var(--text-subheading);
  line-height: 1.42;
  letter-spacing: 0.6px;
}

.body-sm {
  font-size: var(--text-body-sm);
  line-height: 1.5;
  letter-spacing: 0.42px;
}

.caption {
  font-size: var(--text-caption);
  line-height: 1.5;
  letter-spacing: 0.36px;
}

.eyebrow {
  font-size: var(--text-caption);
  letter-spacing: 2.4px;
  text-transform: uppercase;
  color: var(--color-terracotta-flame);
  font-weight: var(--fw-medium);
}

/* ============================================
   布局
   ============================================ */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--sp-30);
}

.section {
  padding: var(--section-gap) 0;
}

.section-divider {
  border-top: 1px solid var(--color-platinum-frost);
}

.section-header {
  margin-bottom: var(--sp-45);
  text-align: center;
}

.section-header.left {
  text-align: left;
}

.section-header .eyebrow {
  display: block;
  margin-bottom: var(--sp-17);
}

.section-header p {
  max-width: 640px;
  margin: var(--sp-20) auto 0;
  color: var(--color-earth-umber);
  opacity: 0.8;
}

/* ============================================
   导航栏
   ============================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(249, 248, 240, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-platinum-frost);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  padding: 0 var(--sp-30);
  max-width: var(--container-max);
  margin: 0 auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--color-earth-umber);
}

.brand:hover {
  text-decoration: none;
}

.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: var(--radius);
  background-color: var(--color-earth-umber);
  color: var(--color-peach-cream);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-paradigm-pro);
  font-weight: var(--fw-light);
  font-size: 22px;
  letter-spacing: 1px;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-text .brand-title {
  font-family: var(--font-paradigm-pro);
  font-weight: var(--fw-light);
  font-size: 18px;
  letter-spacing: 1.4px;
  color: var(--color-earth-umber);
}

.brand-text .brand-subtitle {
  font-size: 11px;
  letter-spacing: 0.4px;
  color: var(--color-earth-umber);
  opacity: 0.7;
  margin-top: 2px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--sp-10);
}

.nav-link {
  display: inline-block;
  padding: 17px var(--sp-34);
  font-size: var(--text-body-sm);
  font-weight: var(--fw-medium);
  letter-spacing: 0.42px;
  color: var(--color-earth-umber);
  border-radius: var(--radius);
  border: 1px solid transparent;
  text-decoration: none;
  transition: all 0.25s ease;
}

.nav-link:hover {
  border-color: var(--color-earth-umber);
  text-decoration: none;
}

.nav-link.active {
  border-color: var(--color-terracotta-flame);
}

.nav-cta {
  margin-left: var(--sp-18);
}

.nav-toggle {
  display: none;
  width: 38px;
  height: 38px;
  border-radius: var(--radius);
  align-items: center;
  justify-content: center;
  color: var(--color-earth-umber);
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background-color: currentColor;
  position: relative;
}

.nav-toggle span::before,
.nav-toggle span::after {
  content: '';
  position: absolute;
  left: 0;
  width: 20px;
  height: 2px;
  background-color: currentColor;
}

.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }

/* ============================================
   按钮
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 22.5px var(--sp-45);
  font-size: var(--text-body-sm);
  font-weight: var(--fw-regular);
  letter-spacing: 0.42px;
  border-radius: var(--radius);
  text-decoration: none;
  transition: all 0.25s ease;
  cursor: pointer;
  border: 1px solid transparent;
}

.btn-primary {
  background-color: var(--color-terracotta-flame);
  color: var(--color-peach-cream);
  border-color: var(--color-terracotta-flame);
}

.btn-primary:hover {
  background-color: rgba(233, 116, 81, 0.9);
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-earth-umber);
  border-color: var(--color-earth-umber);
  padding: 16px var(--sp-34);
}

.btn-ghost:hover {
  background-color: var(--color-earth-umber);
  color: var(--color-peach-cream);
  text-decoration: none;
}

.btn-light {
  background-color: transparent;
  color: var(--color-peach-cream);
  border-color: var(--color-peach-cream);
  padding: 16px var(--sp-34);
}

.btn-light:hover {
  background-color: var(--color-peach-cream);
  color: var(--color-earth-umber);
  text-decoration: none;
}

.btn-sm {
  padding: 12px var(--sp-23);
  font-size: var(--text-caption);
}

/* ============================================
   首页 Banner / 英雄区
   ============================================ */
.hero {
  position: relative;
  background-color: var(--color-earth-umber);
  color: var(--color-warm-linen);
  min-height: 720px;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: var(--sp-90) 0;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(180deg, rgba(60, 38, 28, 0.55) 0%, rgba(60, 38, 28, 0.85) 100%),
    url('https://picsum.photos/seed/niuniu-hero/1920/1080');
  background-size: cover;
  background-position: center;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 880px;
}

.hero .eyebrow {
  color: var(--color-terracotta-flame);
  margin-bottom: var(--sp-23);
}

.hero h1 {
  color: var(--color-warm-linen);
  margin-bottom: var(--sp-30);
}

.hero p.lead {
  font-size: var(--text-subheading);
  line-height: 1.55;
  letter-spacing: 0.6px;
  color: var(--color-pale-ochre);
  max-width: 620px;
  margin-bottom: var(--sp-40);
}

.hero-actions {
  display: flex;
  gap: var(--sp-18);
  flex-wrap: wrap;
}

.hero-meta {
  position: absolute;
  bottom: var(--sp-40);
  right: var(--sp-30);
  z-index: 1;
  display: flex;
  gap: var(--sp-40);
  font-size: var(--text-caption);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--color-pale-ochre);
}

.hero-meta span strong {
  display: block;
  font-family: var(--font-paradigm-pro);
  font-size: 32px;
  font-weight: var(--fw-light);
  letter-spacing: 1.2px;
  color: var(--color-warm-linen);
  margin-bottom: 4px;
}

/* ============================================
   内部页 hero（小尺寸）
   ============================================ */
.page-hero {
  background-color: var(--color-earth-umber);
  color: var(--color-warm-linen);
  padding: var(--sp-90) 0 var(--sp-68);
  text-align: center;
}

.page-hero h1 {
  color: var(--color-warm-linen);
  margin-bottom: var(--sp-20);
}

.page-hero p {
  color: var(--color-pale-ochre);
  max-width: 640px;
  margin: 0 auto;
  font-size: var(--text-subheading);
  line-height: 1.55;
  letter-spacing: 0.6px;
}

.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: var(--sp-23);
  font-size: var(--text-caption);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--color-pale-ochre);
}

.breadcrumb a {
  color: var(--color-pale-ochre);
}

.breadcrumb a:hover {
  color: var(--color-warm-linen);
}

.breadcrumb .sep {
  opacity: 0.6;
}

/* ============================================
   核心优势
   ============================================ */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-40);
}

.feature-card {
  text-align: left;
  padding: var(--sp-30) 0;
}

.feature-card .num {
  font-family: var(--font-paradigm-pro);
  font-weight: var(--fw-light);
  font-size: 47px;
  letter-spacing: 2px;
  color: var(--color-terracotta-flame);
  line-height: 1;
  margin-bottom: var(--sp-20);
}

.feature-card h3 {
  margin-bottom: var(--sp-14);
}

.feature-card p {
  font-size: var(--text-body-sm);
  color: var(--color-earth-umber);
  opacity: 0.85;
}

/* ============================================
   关于预览
   ============================================ */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-68);
  align-items: center;
}

.split-img {
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4 / 5;
  background-color: var(--color-pale-ochre);
}

.split-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.split-img:hover img {
  transform: scale(1.04);
}

.split-text .eyebrow {
  display: block;
  margin-bottom: var(--sp-20);
}

.split-text h2 {
  margin-bottom: var(--sp-23);
}

.split-text p {
  margin-bottom: var(--sp-20);
}

.split-text .quote {
  border-left: 2px solid var(--color-terracotta-flame);
  padding-left: var(--sp-20);
  margin-top: var(--sp-30);
  font-style: italic;
  color: var(--color-earth-umber);
  opacity: 0.85;
}

/* ============================================
   作品网格
   ============================================ */
.work-filters {
  display: flex;
  justify-content: center;
  gap: var(--sp-10);
  flex-wrap: wrap;
  margin-bottom: var(--sp-45);
}

.filter-btn {
  padding: 12px var(--sp-23);
  font-size: var(--text-body-sm);
  font-weight: var(--fw-medium);
  letter-spacing: 0.42px;
  color: var(--color-earth-umber);
  border-radius: var(--radius);
  border: 1px solid var(--color-platinum-frost);
  background-color: transparent;
  cursor: pointer;
  transition: all 0.25s ease;
}

.filter-btn:hover {
  border-color: var(--color-earth-umber);
}

.filter-btn.active {
  background-color: var(--color-terracotta-flame);
  border-color: var(--color-terracotta-flame);
  color: var(--color-peach-cream);
}

.work-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-30);
}

.work-card {
  display: block;
  text-decoration: none;
  color: inherit;
  transition: all 0.3s ease;
}

.work-card:hover {
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: 0 2px 8px rgba(60, 38, 28, 0.08);
}

.work-thumb {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4 / 5;
  background-color: var(--color-pale-ochre);
  margin-bottom: var(--sp-20);
}

.work-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.work-card:hover .work-thumb img {
  transform: scale(1.06);
}

.work-tag {
  position: absolute;
  top: var(--sp-17);
  left: var(--sp-17);
  padding: 6px 12px;
  font-size: var(--text-caption);
  letter-spacing: 0.4px;
  background-color: rgba(249, 248, 240, 0.92);
  color: var(--color-earth-umber);
  border-radius: var(--radius);
}

.work-meta h3 {
  font-size: var(--text-subheading);
  font-weight: var(--fw-medium);
  margin-bottom: 6px;
  letter-spacing: 0.4px;
}

.work-meta .meta-line {
  display: flex;
  justify-content: space-between;
  font-size: var(--text-caption);
  color: var(--color-earth-umber);
  opacity: 0.7;
  letter-spacing: 0.36px;
}

/* ============================================
   服务
   ============================================ */
.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-30);
}

.service-card {
  background-color: var(--color-warm-linen);
  border: 1px solid var(--color-platinum-frost);
  border-radius: var(--radius);
  padding: var(--sp-45);
  transition: all 0.3s ease;
}

.service-card:hover {
  border-color: var(--color-earth-umber);
  box-shadow: 0 2px 8px rgba(60, 38, 28, 0.08);
}

.service-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius);
  background-color: var(--color-pale-ochre);
  color: var(--color-earth-umber);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--sp-23);
}

.service-icon svg {
  width: 24px;
  height: 24px;
  stroke: currentColor;
  stroke-width: 1.5;
  fill: none;
}

.service-card h3 {
  font-size: var(--text-subheading);
  font-weight: var(--fw-medium);
  margin-bottom: var(--sp-14);
}

.service-card p {
  font-size: var(--text-body-sm);
  color: var(--color-earth-umber);
  opacity: 0.8;
  margin-bottom: var(--sp-23);
}

.service-card .price {
  display: block;
  font-family: var(--font-paradigm-pro);
  font-weight: var(--fw-light);
  font-size: 28px;
  color: var(--color-terracotta-flame);
  margin-bottom: var(--sp-23);
  letter-spacing: 0.5px;
}

.service-card .more {
  font-size: var(--text-body-sm);
  color: var(--color-earth-umber);
  font-weight: var(--fw-medium);
  letter-spacing: 0.4px;
  border-bottom: 1px solid var(--color-earth-umber);
  padding-bottom: 2px;
}

.service-card .more:hover {
  color: var(--color-terracotta-flame);
  border-bottom-color: var(--color-terracotta-flame);
  text-decoration: none;
}

/* ============================================
   团队
   ============================================ */
.team-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-40);
}

.team-card {
  display: flex;
  gap: var(--sp-30);
  align-items: flex-start;
  text-decoration: none;
  color: inherit;
  padding: var(--sp-23);
  border-radius: var(--radius);
  transition: all 0.3s ease;
}

.team-card:hover {
  background-color: var(--color-peach-cream);
  text-decoration: none;
}

.team-avatar {
  flex-shrink: 0;
  width: 110px;
  height: 110px;
  border-radius: var(--radius);
  overflow: hidden;
  background-color: var(--color-pale-ochre);
}

.team-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.team-info h3 {
  font-size: var(--text-subheading);
  font-weight: var(--fw-medium);
  margin-bottom: 4px;
}

.team-info .role {
  font-size: var(--text-caption);
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--color-terracotta-flame);
  margin-bottom: var(--sp-14);
  display: block;
}

.team-info p {
  font-size: var(--text-body-sm);
  color: var(--color-earth-umber);
  opacity: 0.85;
  margin-bottom: var(--sp-14);
}

.team-info .more {
  font-size: var(--text-body-sm);
  font-weight: var(--fw-medium);
  letter-spacing: 0.4px;
  border-bottom: 1px solid var(--color-earth-umber);
  padding-bottom: 2px;
}

/* ============================================
   联系
   ============================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: var(--sp-68);
}

.contact-info .info-block {
  margin-bottom: var(--sp-30);
}

.contact-info .info-block h4 {
  font-size: var(--text-caption);
  letter-spacing: 1.6px;
  text-transform: uppercase;
  color: var(--color-terracotta-flame);
  margin-bottom: var(--sp-10);
  font-weight: var(--fw-medium);
}

.contact-info .info-block p {
  font-size: var(--text-body);
  color: var(--color-earth-umber);
  line-height: 1.6;
}

.contact-info .info-block a {
  border-bottom: 1px solid var(--color-platinum-frost);
}

.contact-info .info-block a:hover {
  border-bottom-color: var(--color-terracotta-flame);
  text-decoration: none;
}

.social-links {
  display: flex;
  gap: var(--sp-14);
  margin-top: var(--sp-23);
}

.social-links a {
  width: 38px;
  height: 38px;
  border-radius: var(--radius);
  border: 1px solid var(--color-platinum-frost);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-earth-umber);
  transition: all 0.25s ease;
}

.social-links a:hover {
  border-color: var(--color-earth-umber);
  background-color: var(--color-earth-umber);
  color: var(--color-peach-cream);
  text-decoration: none;
}

.social-links svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  stroke-width: 1.6;
  fill: none;
}

/* ============================================
   表单
   ============================================ */
.form-card {
  background-color: #fff;
  border: 1px solid var(--color-platinum-frost);
  border-radius: var(--radius);
  padding: var(--sp-45);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-20);
}

.form-group {
  margin-bottom: var(--sp-23);
}

.form-group label {
  display: block;
  font-size: var(--text-caption);
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--color-earth-umber);
  margin-bottom: var(--sp-10);
  font-weight: var(--fw-medium);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 14px 16px;
  background-color: var(--color-warm-linen);
  border: 1px solid var(--color-platinum-frost);
  border-radius: var(--radius);
  font-size: var(--text-body-sm);
  letter-spacing: 0.4px;
  color: var(--color-earth-umber);
  transition: border-color 0.25s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-terracotta-flame);
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

.form-help {
  font-size: var(--text-caption);
  color: var(--color-earth-umber);
  opacity: 0.6;
  margin-top: var(--sp-10);
}

.form-success {
  background-color: var(--color-pale-ochre);
  border-radius: var(--radius);
  padding: var(--sp-30);
  text-align: center;
  margin-bottom: var(--sp-30);
  display: none;
}

.form-success.is-visible {
  display: block;
}

/* ============================================
   故事列表
   ============================================ */
.story-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-40);
}

.story-card {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  transition: all 0.3s ease;
}

.story-card:hover {
  text-decoration: none;
}

.story-card .work-thumb {
  margin-bottom: var(--sp-23);
}

.story-card .story-meta {
  display: flex;
  gap: var(--sp-14);
  font-size: var(--text-caption);
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--color-terracotta-flame);
  margin-bottom: var(--sp-14);
}

.story-card .story-meta span {
  color: var(--color-earth-umber);
  opacity: 0.65;
}

.story-card h3 {
  font-size: var(--text-subheading);
  font-weight: var(--fw-medium);
  margin-bottom: var(--sp-10);
  letter-spacing: 0.4px;
}

.story-card p {
  font-size: var(--text-body-sm);
  color: var(--color-earth-umber);
  opacity: 0.85;
  margin-bottom: var(--sp-14);
}

/* ============================================
   详情页（作品/服务/博客）
   ============================================ */
.detail-hero {
  background-color: var(--color-earth-umber);
  color: var(--color-warm-linen);
  padding: var(--sp-68) 0;
}

.detail-hero h1 {
  color: var(--color-warm-linen);
  margin-bottom: var(--sp-20);
}

.detail-hero .lead {
  color: var(--color-pale-ochre);
  font-size: var(--text-subheading);
  line-height: 1.55;
  letter-spacing: 0.6px;
  max-width: 760px;
}

.detail-hero-meta {
  display: flex;
  gap: var(--sp-30);
  margin-top: var(--sp-30);
  padding-top: var(--sp-30);
  border-top: 1px solid rgba(221, 222, 223, 0.18);
  flex-wrap: wrap;
}

.detail-hero-meta .item .label {
  font-size: var(--text-caption);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--color-pale-ochre);
  margin-bottom: 6px;
}

.detail-hero-meta .item .value {
  font-size: var(--text-body);
  color: var(--color-warm-linen);
}

.detail-cover {
  margin-top: -80px;
  margin-bottom: var(--sp-68);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 24px 48px rgba(60, 38, 28, 0.18);
  aspect-ratio: 16 / 9;
  background-color: var(--color-pale-ochre);
}

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

.detail-body {
  max-width: 760px;
  margin: 0 auto;
  font-size: var(--text-body);
  line-height: 1.7;
  letter-spacing: 0.54px;
}

.detail-body h2 {
  font-size: var(--text-heading-sm);
  font-weight: var(--fw-medium);
  line-height: 1.35;
  letter-spacing: 0.96px;
  margin: var(--sp-45) 0 var(--sp-20);
}

.detail-body p {
  margin-bottom: var(--sp-20);
}

.detail-body blockquote {
  border-left: 3px solid var(--color-terracotta-flame);
  padding: var(--sp-17) var(--sp-30);
  margin: var(--sp-30) 0;
  font-family: var(--font-paradigm-pro);
  font-weight: var(--fw-light);
  font-size: 26px;
  line-height: 1.4;
  letter-spacing: 1px;
  color: var(--color-earth-umber);
}

.detail-body figure {
  margin: var(--sp-30) 0;
}

.detail-body figure img {
  border-radius: var(--radius);
  width: 100%;
}

.detail-body figcaption {
  font-size: var(--text-caption);
  color: var(--color-earth-umber);
  opacity: 0.7;
  margin-top: var(--sp-10);
  text-align: center;
  letter-spacing: 0.36px;
}

.detail-body ul,
.detail-body ol {
  margin: var(--sp-20) 0;
  padding-left: var(--sp-30);
}

.detail-body ul li {
  list-style: disc;
  margin-bottom: var(--sp-10);
}

.detail-body ol li {
  list-style: decimal;
  margin-bottom: var(--sp-10);
}

.gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-20);
  margin: var(--sp-30) 0;
}

.gallery img {
  border-radius: var(--radius);
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
}

.detail-tags {
  display: flex;
  gap: var(--sp-10);
  margin: var(--sp-30) 0;
  flex-wrap: wrap;
}

.detail-tags .tag {
  padding: 6px 14px;
  font-size: var(--text-caption);
  letter-spacing: 0.4px;
  border: 1px solid var(--color-platinum-frost);
  border-radius: var(--radius);
  color: var(--color-earth-umber);
}

.detail-cta {
  background-color: var(--color-peach-cream);
  border-radius: var(--radius);
  padding: var(--sp-45);
  text-align: center;
  margin-top: var(--sp-68);
}

.detail-cta h3 {
  font-size: var(--text-heading-sm);
  font-weight: var(--fw-medium);
  margin-bottom: var(--sp-14);
  letter-spacing: 0.96px;
}

.detail-cta p {
  margin-bottom: var(--sp-30);
  opacity: 0.8;
}

.detail-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--sp-30) 0;
  margin-top: var(--sp-68);
  border-top: 1px solid var(--color-platinum-frost);
  gap: var(--sp-20);
}

.detail-nav a {
  flex: 1;
  text-decoration: none;
  padding: var(--sp-20);
  border: 1px solid var(--color-platinum-frost);
  border-radius: var(--radius);
  transition: all 0.25s ease;
}

.detail-nav a:hover {
  border-color: var(--color-earth-umber);
  text-decoration: none;
}

.detail-nav .label {
  display: block;
  font-size: var(--text-caption);
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--color-terracotta-flame);
  margin-bottom: 6px;
}

.detail-nav .title {
  font-size: var(--text-body);
  font-weight: var(--fw-medium);
}

.detail-nav .next {
  text-align: right;
}

/* ============================================
   页脚
   ============================================ */
.site-footer {
  background-color: var(--color-earth-umber);
  color: var(--color-pale-ochre);
  padding: var(--sp-68) 0 var(--sp-30);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--sp-45);
  margin-bottom: var(--sp-45);
}

.footer-brand .brand-mark {
  background-color: var(--color-peach-cream);
  color: var(--color-earth-umber);
}

.footer-brand .brand-text .brand-title,
.footer-brand .brand-text .brand-subtitle {
  color: var(--color-warm-linen);
}

.footer-brand p {
  margin-top: var(--sp-20);
  font-size: var(--text-body-sm);
  line-height: 1.6;
  color: var(--color-pale-ochre);
  opacity: 0.85;
  max-width: 320px;
}

.footer-col h4 {
  font-size: var(--text-caption);
  letter-spacing: 1.6px;
  text-transform: uppercase;
  color: var(--color-terracotta-flame);
  margin-bottom: var(--sp-20);
  font-weight: var(--fw-medium);
}

.footer-col ul li {
  margin-bottom: 12px;
}

.footer-col a {
  font-size: var(--text-body-sm);
  color: var(--color-pale-ochre);
  opacity: 0.85;
  transition: all 0.25s ease;
}

.footer-col a:hover {
  color: var(--color-warm-linen);
  opacity: 1;
  text-decoration: none;
}

.footer-bottom {
  border-top: 1px solid rgba(247, 239, 197, 0.18);
  padding-top: var(--sp-30);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--sp-20);
  font-size: var(--text-caption);
  letter-spacing: 0.36px;
  color: var(--color-pale-ochre);
  opacity: 0.7;
}

.footer-social {
  display: flex;
  gap: var(--sp-10);
}

.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: var(--radius);
  border: 1px solid rgba(247, 239, 197, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-pale-ochre);
}

.footer-social a:hover {
  background-color: var(--color-terracotta-flame);
  border-color: var(--color-terracotta-flame);
  color: var(--color-peach-cream);
}

.footer-social svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  stroke-width: 1.5;
  fill: none;
}

/* ============================================
   通用工具类
   ============================================ */
.text-center { text-align: center; }
.text-eyebrow { color: var(--color-terracotta-flame); }
.text-italic { font-style: italic; }
.opacity-80 { opacity: 0.8; }
.mb-20 { margin-bottom: var(--sp-20); }
.mb-30 { margin-bottom: var(--sp-30); }
.mb-45 { margin-bottom: var(--sp-45); }
.mt-30 { margin-top: var(--sp-30); }
.mt-45 { margin-top: var(--sp-45); }

/* ============================================
   响应式
   ============================================ */
@media (max-width: 960px) {
  :root {
    --text-display: 36px;
    --text-heading: 28px;
    --text-heading-sm: 24px;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    background-color: var(--color-warm-linen);
    flex-direction: column;
    padding: var(--sp-20);
    border-bottom: 1px solid var(--color-platinum-frost);
    gap: 0;
  }

  .nav-links.is-open {
    display: flex;
  }

  .nav-link {
    width: 100%;
    text-align: left;
  }

  .nav-cta {
    margin-left: 0;
    margin-top: var(--sp-14);
    width: 100%;
  }

  .nav-cta .btn {
    width: 100%;
  }

  .hero {
    min-height: 600px;
  }

  .hero-meta {
    position: static;
    margin-top: var(--sp-45);
    gap: var(--sp-30);
    flex-wrap: wrap;
  }

  .feature-grid,
  .work-grid,
  .service-grid,
  .story-list {
    grid-template-columns: 1fr;
  }

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

  .split {
    grid-template-columns: 1fr;
    gap: var(--sp-40);
  }

  .split-img {
    aspect-ratio: 4 / 3;
    order: -1;
  }

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

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-30);
  }

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

  .detail-nav {
    flex-direction: column;
  }

  .detail-nav a {
    width: 100%;
  }

  .detail-nav .next {
    text-align: left;
  }
}

@media (max-width: 600px) {
  :root {
    --text-display: 32px;
    --section-gap: 56px;
    --sp-45: 32px;
    --sp-68: 48px;
  }

  .container {
    padding: 0 20px;
  }

  .section {
    padding: 56px 0;
  }

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

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .detail-cover {
    margin-top: -40px;
  }
}

/* ============================================
   动画
   ============================================ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeInUp 0.8s ease-out both;
}

.fade-in-d1 { animation-delay: 0.1s; }
.fade-in-d2 { animation-delay: 0.2s; }
.fade-in-d3 { animation-delay: 0.3s; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}