/* ===== 变量与重置 ===== */
:root {
  --color-bg: #f8f3ed;
  --color-bg-dark: #1c1917;
  --color-surface: #f8f3ed;
  --color-primary: #c45c3e;
  --color-primary-dark: #a34a32;
  --color-accent: #d4a574;
  --color-text: #292524;
  --color-text-light: #78716c;
  --color-border: #e7e5e4;
  --font-serif: 'Noto Serif SC', 'Songti SC', serif;
  --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.15);
  --radius: 12px;
  --header-h: 72px;
  --transition: 0.3s ease;
}

html {
  scroll-behavior: smooth;
}
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

.container {
  width: min(1140px, 92vw);
  margin-inline: auto;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 2rem;
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: 50px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.6);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: #fff;
}

.btn-full {
  width: 100%;
}

/* ===== 导航栏 ===== */
/* 基础导航条样式 */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;

  /* 关键：设置半透明背景白（或暗色），并加入毛玻璃滤镜 */
  background-color: rgba(
    255,
    255,
    255,
    0.6
  ) !important; /* 60% 透明度的白背景 */
  backdrop-filter: blur(12px); /* 磨砂模糊半径，数值越大越模糊 */
  -webkit-backdrop-filter: blur(12px); /* 兼容 Safari 浏览器 */

  /* 增加一条淡淡的下边框，让磨砂边缘更精致（可选） */
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);

  /* 页面滚动时的过渡动画 */
  transition:
    background-color 0.3s ease,
    backdrop-filter 0.3s ease,
    box-shadow 0.3s ease;
}

/* 当页面滚动时，或者在子页面（带有 .scrolled 类名）时的状态 */
.header.scrolled {
  /* 稍微加深一点背景，或者加一点微弱的阴影，提升文字可读性 */
  background-color: rgba(255, 255, 255, 0.75) !important;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.03);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 600;
  color: #fff;
  transition: color var(--transition);
}

.header.scrolled .logo {
  color: var(--color-text);
}

.logo-icon {
  font-size: 1.3rem;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.85);
  transition: color var(--transition);
  position: relative;
}

.header.scrolled .nav-link {
  color: var(--color-text-light);
}

.nav-link:hover,
.nav-link.active {
  color: #fff;
}

.header.scrolled .nav-link:hover,
.header.scrolled .nav-link.active {
  color: var(--color-primary);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
}

.nav-cta {
  padding: 0.5rem 1.25rem;
  background: var(--color-primary);
  color: #fff !important;
  border-radius: 50px;
}

.nav-cta:hover {
  background: var(--color-primary-dark);
}

.header.scrolled .nav-cta {
  color: #fff !important;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: #fff;
  transition: all var(--transition);
  border-radius: 2px;
}

.header.scrolled .nav-toggle span {
  background: var(--color-text);
}

.nav-toggle.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== 首屏 ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: url('./img/bg.jpg') center/cover no-repeat;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(28, 25, 23, 0.75) 0%,
    rgba(28, 25, 23, 0.45) 50%,
    rgba(196, 92, 62, 0.35) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: #fff;
  padding: calc(var(--header-h) + 2rem) 0 4rem;
}

.hero-tag {
  display: inline-block;
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 1.5rem;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 1.5rem;
}

.hero-desc {
  max-width: 560px;
  margin: 0 auto 2.5rem;
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 3.5rem;
}

.hero-stats {
  display: flex;
  gap: 3rem;
  justify-content: center;
  flex-wrap: wrap;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stat-num {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-accent);
}

.stat-label {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
  margin-top: 0.25rem;
}

.hero-scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.8rem;
  z-index: 1;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%,
  100% {
    transform: translateX(-50%) translateY(0);
  }
  50% {
    transform: translateX(-50%) translateY(8px);
  }
}

/* ===== 通用区块 ===== */
.section {
  padding: 6rem 0;
}

.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 4rem;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--color-text);
}

.section-desc {
  color: var(--color-text-light);
  font-size: 1.05rem;
}

/* ===== 关于我们 ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-image {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.about-image img {
  width: 100%;
  height: 420px;
  object-fit: cover;
}

.about-badge {
  position: absolute;
  bottom: 1.5rem;
  right: 1.5rem;
  background: var(--color-primary);
  color: #fff;
  padding: 1rem 1.5rem;
  border-radius: var(--radius);
  text-align: center;
}

.badge-year {
  display: block;
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
}

.badge-text {
  font-size: 0.8rem;
  opacity: 0.9;
}

.about-content h3 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

.about-content p {
  color: var(--color-text-light);
  margin-bottom: 1rem;
}

.about-features {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.about-features li {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.feature-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.about-features strong {
  display: block;
  margin-bottom: 0.15rem;
}

.about-features p {
  font-size: 0.9rem;
  margin: 0;
}

/* ===== 主页课程入口 ===== */
.courses-home {
  background: var(--color-surface);
}

.courses-home-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.course-home-card {
  display: block;
  background: var(--color-bg);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition:
    transform var(--transition),
    box-shadow var(--transition);
}

.course-home-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.course-home-img {
  height: 200px;
  background-size: cover;
  background-position: center;
  transition: transform 0.5s ease;
}

.course-home-card:hover .course-home-img {
  transform: scale(1.03);
}

.course-home-body {
  padding: 1.5rem;
}

.course-home-en {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 0.4rem;
}

.course-home-body h3 {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  margin-bottom: 0.35rem;
}

.course-home-body p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 0.75rem;
}

.course-home-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-primary);
}

/* ===== 子页面 ===== */
.subpage .header.scrolled .logo,
.subpage .header.scrolled .nav-link {
  color: var(--color-text);
}

.subpage .header.scrolled .nav-link:hover,
.subpage .header.scrolled .nav-link.active {
  color: var(--color-primary);
}

.subpage .header.scrolled .nav-toggle span {
  background: var(--color-text);
}

.sub-hero {
  position: relative;
  min-height: 42vh;
  display: flex;
  align-items: flex-end;
  background-size: cover;
  background-position: center;
  margin-top: var(--header-h);
}

.sub-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(28, 25, 23, 0.85) 0%,
    rgba(28, 25, 23, 0.4) 100%
  );
}

.sub-hero-content {
  position: relative;
  z-index: 1;
  color: #fff;
  padding: 3rem 0;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  margin-bottom: 1.25rem;
  color: rgba(255, 255, 255, 0.6);
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.8);
  transition: color var(--transition);
}

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

.sub-hero-tag {
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}

.sub-hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.sub-hero-desc {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.85);
  max-width: 560px;
}

.course-detail {
  background: var(--color-surface);
}

.consult-box {
  text-align: center;
  background: var(--color-bg);
  border-radius: var(--radius);
  padding: 3rem 2rem;
  margin-top: 1rem;
}

.consult-box h3 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.consult-box p {
  color: var(--color-text-light);
  max-width: 520px;
  margin: 0 auto 1.5rem;
  line-height: 1.8;
}

.other-courses {
  background: var(--color-bg);
  padding: 3rem 0;
}

.other-courses-title {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  text-align: center;
  margin-bottom: 1.25rem;
  color: var(--color-text-light);
}

.other-courses-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.other-courses-links a {
  padding: 0.6rem 1.5rem;
  background: var(--color-surface);
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 500;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

.other-courses-links a:hover {
  background: var(--color-primary);
  color: #fff;
  transform: translateY(-2px);
}

/* ===== 课程 ===== */
.courses {
  background: var(--color-surface);
}

.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
}

.course-card {
  background: var(--color-bg);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition:
    transform var(--transition),
    box-shadow var(--transition);
  position: relative;
}

.course-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.course-card.featured {
  border: 2px solid var(--color-primary);
}

.course-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.3rem 0.75rem;
  border-radius: 50px;
  z-index: 1;
}

.course-img {
  height: 180px;
  background-size: cover;
  background-position: center;
}

.course-body {
  padding: 1.5rem;
}

.course-level {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-primary);
  background: rgba(196, 92, 62, 0.1);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  margin-bottom: 0.75rem;
}

.course-body h3 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.course-body > p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 1rem;
}

.course-meta {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: 1.25rem;
}

.course-link {
  font-weight: 600;
  color: var(--color-primary);
  font-size: 0.9rem;
  transition: gap var(--transition);
}

.course-link:hover {
  color: var(--color-primary-dark);
}

.btn-sm {
  padding: 0.6rem 1.5rem;
  font-size: 0.85rem;
}

/* ===== 水彩课程详情 ===== */
.watercolor {
  background: var(--color-surface);
}

.watercolor-intro {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-bottom: 3rem;
}

.intro-block {
  padding: 2rem;
  background: var(--color-bg);
  border-radius: var(--radius);
  border-left: 3px solid var(--color-primary);
}

.intro-block h3 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
  color: var(--color-primary);
}

.intro-block p {
  font-size: 0.95rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

.suitable-box {
  background: var(--color-bg);
  border-radius: var(--radius);
  padding: 2.5rem;
  margin-bottom: 3.5rem;
}

.suitable-box h3 {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  margin-bottom: 1.5rem;
  text-align: center;
}

.checklist {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 0.75rem 2rem;
}

.checklist li {
  position: relative;
  padding-left: 1.75rem;
  font-size: 0.95rem;
  color: var(--color-text-light);
}

.checklist li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 700;
}

.pricing-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  text-align: center;
  margin-bottom: 2rem;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.pricing-card {
  background: var(--color-bg);
  border-radius: var(--radius);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition:
    transform var(--transition),
    box-shadow var(--transition);
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.pricing-card.featured {
  border: 2px solid var(--color-primary);
  background: #fff;
}

.pricing-num {
  display: inline-block;
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

.pricing-card h4 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
}

.pricing-desc {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 1.25rem;
  flex-grow: 1;
  line-height: 1.7;
}

.pricing-meta {
  margin-bottom: 1.5rem;
}

.pricing-meta li {
  font-size: 0.9rem;
  color: var(--color-text-light);
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--color-border);
}

.pricing-meta li:last-child {
  border-bottom: none;
}

.pricing-meta strong {
  color: var(--color-text);
  margin-right: 0.5rem;
}

.profile {
  background: var(--color-bg);
}

.profile-grid {
  display: grid;
  grid-template-columns: 2fr 3fr;
  gap: 4rem;
  align-items: center;
}

.profile-image {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.profile-image img {
  width: 100%;
  height: 480px;
  object-fit: cover;
}

.profile-content .section-title {
  text-align: left;
  margin-bottom: 1rem;
}

.profile-credentials {
  font-size: 1.05rem;
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: 1.25rem;
  line-height: 1.8;
}

.profile-content p {
  color: var(--color-text-light);
  margin-bottom: 1rem;
}

.profile-quote {
  margin: 2rem 0;
  padding: 1.5rem 2rem;
  background: var(--color-surface);
  border-left: 4px solid var(--color-accent);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.profile-quote p {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--color-text);
  margin: 0;
  line-height: 1.8;
}

.profile-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

.profile-tags li {
  font-size: 0.8rem;
  padding: 0.35rem 0.85rem;
  background: rgba(196, 92, 62, 0.1);
  color: var(--color-primary);
  border-radius: 50px;
  font-weight: 500;
}

/* ===== 作品展示 ===== */
.gallery {
  background: var(--color-surface);
  color: #fff;
}

.gallery .section-tag {
  color: var(--color-accent);
}

.gallery .section-title {
  color: #8c5757db;
}

.gallery .section-desc {
  color: #8c5757db;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: auto auto;
  gap: 1rem;
}

.gallery-item {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
}

.gallery-item.large {
  grid-column: span 2;
  grid-row: span 2;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 200px;
  transition: transform 0.5s ease;
}

.gallery-item.large img {
  min-height: 420px;
}

.gallery-item:hover img {
  transform: scale(1.05);
}

.gallery-item figcaption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1rem 1.25rem;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
  font-size: 0.85rem;
  transform: translateY(100%);
  transition: transform var(--transition);
}

.gallery-item:hover figcaption {
  transform: translateY(0);
}

/* ===== 联系我们 ===== */
.location-box {
  background: var(--color-bg);
  border-radius: var(--radius);
  padding: 2rem;
}

.location-box h4 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  margin-bottom: 1.25rem;
}

.contact-details small {
  font-size: 0.85rem;
  opacity: 0.8;
}

.form-title {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
}

.form-note {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: 1.5rem;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.contact-info .section-title {
  text-align: left;
  margin-bottom: 1rem;
}

.contact-info > p {
  color: var(--color-text-light);
  margin-bottom: 2rem;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact-details li {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.contact-icon {
  font-size: 1.3rem;
  flex-shrink: 0;
}

.contact-details strong {
  display: block;
  margin-bottom: 0.15rem;
}

.contact-details p {
  font-size: 0.95rem;
  color: var(--color-text-light);
}

.contact-form {
  background: var(--color-surface);
  padding: 2.5rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 0.4rem;
  color: var(--color-text);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--color-text);
  background: var(--color-bg);
  transition: border-color var(--transition);
}

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

.form-group textarea {
  resize: vertical;
}

.form-success {
  text-align: center;
  color: #16a34a;
  font-weight: 500;
  margin-top: 1rem;
  padding: 0.75rem;
  background: #f0fdf4;
  border-radius: 8px;
}

.form-success[hidden] {
  display: none;
}

/* ===== 页脚 ===== */
.footer {
  background: var(--color-bg);
  color: rgb(38 34 29 / 70%);
  padding-top: 4rem;
}

.footer .logo {
  color: #fff;
  margin-bottom: 1rem;
}

.footer-brand p {
  font-size: 0.9rem;
  max-width: 280px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 3rem;
}

.footer-links h4 {
  color: #535250;
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
}

/* 找到包裹列表的 ul，或者直接给它命名 */
.footer-links ul {
  display: flex; /* 核心：变为弹性盒子，子元素默认会横向排成一排 */
  flex-wrap: wrap; /* 可选：如果屏幕太窄，允许自动换行，防止挤变形 */
  gap: 20px; /* 核心：控制各个选项之间的左右间距，可以自由调整数字 */
  list-style: none; /* 可选：去掉列表自带的小圆点 */
  padding: 0; /* 可选：清除浏览器默认内边距 */
  margin: 0; /* 可选：清除浏览器默认外边距 */
}

.footer-links li {
  margin-bottom: 0.6rem;
}

.footer-links a {
  font-size: 0.9rem;
  transition: color var(--transition);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 1.5rem 0;
  text-align: center;
  font-size: 0.85rem;
}

/* ===== 滚动动画 ===== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition:
    opacity 0.6s ease,
    transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== 响应式 ===== */
@media (max-width: 900px) {
  .about-grid,
  .contact-grid,
  .profile-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

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

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

  .profile-image img {
    height: 320px;
  }

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

  .gallery-item.large {
    grid-column: span 2;
    grid-row: span 1;
  }

  .gallery-item.large img {
    min-height: 250px;
  }

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

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    transform: translateY(-120%);
    opacity: 0;
    transition: all var(--transition);
    box-shadow: var(--shadow-md);
  }

  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
  }

  .nav-link {
    color: var(--color-text) !important;
    font-size: 1.05rem;
  }

  .nav-cta {
    text-align: center;
  }

  .hero-stats {
    gap: 2rem;
  }

  .section {
    padding: 4rem 0;
  }

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

  .gallery-item.large {
    grid-column: span 1;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .contact-form {
    padding: 1.5rem;
  }
}

/* 当处于固定页面时，强制让所有卡片完全无法被鼠标点击触发事件 */
.page-fixed {
  pointer-events: none;
  cursor: default; /* 把鼠标手势变回普通箭头，让用户感觉这里不可点 */
}

/* 输入框下方的提示小字专用样式 */
.form-group .field-desc.font-caption {
  font-size: 0.75rem; /* 缩小字号（从原来的 0.85rem 降到 0.75rem） */
  color: #999999; /* 换成更浅的灰色（如果觉得太浅可以改成 #888） */
  margin-top: 6px; /* 让提示字和上方的输入框保持 6 像素的紧凑间距 */
  margin-bottom: 0; /* 清除下边距，避免撑大整行高度 */
  line-height: 1.4; /* 保持良好的折行行高 */
  display: block; /* 确保它独占一行显示在输入框正下方 */
}

.payment-notice-box {
  background-color: rgba(0, 0, 0, 0.02); /* 极浅的灰色背景 */
  border: 1px dashed #dddddd; /* 优雅的虚线边框 */
  border-radius: 6px;
  padding: 12px;
  margin-bottom: 20px; /* 与下方按钮保持间距 */
  display: flex;
  align-items: center;
  gap: 12px;
}

.payment-icon {
  font-size: 1.2rem;
}

.payment-text {
  font-size: 0.85rem;
  color: #555555;
  margin: 0;
  line-height: 1.5;
}

.payment-sub {
  color: #888888;
  font-size: 0.8rem;
}

.sub-hero-title-row {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-book-btn {
  display: inline-block;
  padding: 8px 16px;
  background: var(--color-primary-dark);
  color: white;
  text-decoration: none;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.3s ease;
}

.hero-book-btn:hover {
  transform: translateY(-2px);
}

@media (max-width: 768px) {
  .hero-book-btn {
    padding: 6px 14px;
    font-size: 0.85rem;
  }
}