/* =========================================================
   01. 基础重置
========================================================= */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, sans-serif;
  color: #111827;
  background: #ffffff;
  line-height: 1.7;
}

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

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

ul {
  list-style: none;
}

/* =========================================================
   02. 通用布局
========================================================= */
.container {
  width: min(1280px, calc(100% - 32px));
  margin: 0 auto;
}

.section-alt {
  background: #f9fafb;
}

section {
  padding: 24px 0 88px;
}

/* =========================================================
   03. 顶部导航栏
========================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgb(255, 255, 255);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid #f3f4f6;
}

.nav {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

/* Logo 区域
   注意：如果你的 HTML 不是 .logo-text，而是 .brand-name
   请把这里的类名统一掉 */
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo img {
  height: 52px;
  width: auto;
}

.logo-text {
  font-size: 18px;
  font-weight: 500;
}

.logo-main {
  color: red;
}

.logo-sub {
  color: #111;
}

/* 导航链接 */
.nav-links {
  display: flex;
  gap: 28px;
  color: #000000;
  font-weight: 850;
  font-size: 20px;
  font-size: 2.86rem; 
}

.nav-links a:hover {
  color: #bc0000;

}

/* 顶部按钮 */
.nav-cta {
  flex-shrink: 0;
  white-space: nowrap;
}

/* =========================================================
   04. 按钮系统
========================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 9999px;
  font-weight: 800;
  transition: all 0.3s ease;
  cursor: pointer;
  font-size: 1.2rem;
}

.btn:hover {
  transform: translateY(-2px) scale(1.03);
}

.btn-primary {
  background: #dc2626;
  color: #ffffff;
  padding: 5px 12px;/* 改这里是电脑导航按钮大小 */
  box-shadow: 0 10px 30px rgba(220, 38, 38, 0.18);
}

.btn-primary:hover {
  background: #b91c1c;
}

.btn-secondary {
  background: transparent;
  color: #374151;
  border: 2px solid #d1d5db;
  padding: 12px 22px;
}

.btn-secondary:hover {
  color: #dc2626;
  border-color: #fca5a5;
}

.btn-large {
  padding: 16px 30px;
  font-size: 1rem;
}

.btn-full {
  width: 100%;
}

.btn-white {
  background: #ffffff;
  color: #dc2626;
  padding: 16px 30px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.16);
}

.btn-white:hover {
  background: #f9fafb;
}

/* =========================================================
   05. 标签 / Pills
========================================================= */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  border-radius: 9999px;
  background: #f8f8f8;
  color: #dc2626;
  font-size: 0.92rem;
  font-weight: 600;
}

.pill-red {
  background: #fef2f2;
  color: #dc2626;
}

.pill-green {
  background: #ecfdf5;
  color: #15803d;
}

.pill-amber {
  background: #fffbeb;
  color: #b45309;
}

.pill-purple {
  background: #faf5ff;
  color: #7e22ce;
}

.pill-blue {
  background: #eff6ff;
  color: #1d4ed8;
}

.dot {
  width: 10px;
  height: 10px;
  background: #dc2626;
  border-radius: 50%;
  box-shadow: 0 0 0 6px rgba(220, 38, 38, 0.12);
}

/* =========================================================
   06. 首屏 Hero
========================================================= */
.hero {
  position: relative;
  overflow: hidden;
  padding: 20px 0 90px;
  background: #ffffff;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
  min-height: calc(100vh - 64px);
}

.hero-image-wrap {
  display: block;
}

.hero-image-card {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
}

.hero-image-card img {
  width: 100%;
  min-height: 560px;
  object-fit: cover;
  display: block;
  border-radius: 24px;
  box-shadow: 0 25px 60px rgba(17, 24, 39, 0.18);
}

.hero-text h1 {
  margin-top: 20px;
  font-size: clamp(2.5rem, 5vw, 4.2rem);
  line-height: 1.05;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.highlight {
  color: #dc2626;
}

.hero-desc {
  margin-top: 24px;
  font-size: 1.08rem;
  color: #4b5563;
  max-width: 680px;
}

.thai-line {
  margin-top: 10px;
  color: #6b7280;
  font-style: italic;
}


.social-proof {
  margin-top: 88px;
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.avatars {
  display: flex;
}

.avatars span {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #fee2e2, #fef3c7);
  border: 2px solid #fff;
  margin-left: -10px;
}

.avatars span:first-child {
  margin-left: 0;
}

.proof-text {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  color: #4b5563;
}

.divider {
  width: 1px;
  height: 22px;
  background: #d1d5db;
}

.hero-image-wrap {
  display: block;
}

.hero-image-card,
.image-card {
  position: relative;
  border-radius: 24px;
  overflow: visible;
}

.hero-image-card img,
.image-card img,
.wide-image img {
  width: 100%;
  height: auto;
  border-radius: 24px;
  object-fit: cover;
}

.hero-image-card img {
  min-height: 560px;
  object-fit: cover;
  box-shadow: 0 25px 60px rgba(17, 24, 39, 0.18);
}

.image-overlay {
  position: absolute;
  inset: 0;
  border-radius: 24px;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.22), transparent 45%);
  pointer-events: none;
}

.floating-card {
  position: absolute; /* 浮动定位 */
   z-index: 9999;
  background: rgba(255, 255, 255, 0.58); /* 磨砂透明背景 */
  border: 1px solid #f3f4f6; /* 浅灰边框 */
  border-radius: 18px; /* 圆角 */
  padding: 16px 18px; /* 内边距 */
  box-shadow: 0 18px 40px rgba(17, 24, 39, 0.14); /* 阴影 */
  max-width: 220px; /* 最大宽度 */
}

.floating-card strong {
  display: block;
  margin-bottom: 4px;
  font-size: 0.98rem;
}

.floating-card p {
  font-size: 0.9rem;
  color: #6b7280;
  line-height: 1.5;
  
}

.floating-bottom-left {
  left: 8px;
  bottom: 20px;
}

.floating-top-right {
  top: 12px;
  right: 4px;
}

.hero-bg,
.final-bg {
  position: absolute;
  border-radius: 9999px;
  filter: blur(56px);
  pointer-events: none;
}

.hero-bg-1 {
  width: 320px;
  height: 320px;
  right: -80px;
  top: -40px;
  background: rgba(254, 202, 202, 0.5);
}

.hero-bg-2 {
  width: 240px;
  height: 240px;
  left: -60px;
  bottom: 30px;
  background: rgba(253, 230, 138, 0.35);
}

.hero-bg-3 {
  width: 220px;
  height: 220px;
  right: 20%;
  top: 10%;
  background: rgba(254, 242, 242, 0.8);
}

/* =========================================================
   07. 通用区块标题
========================================================= */
.section-heading {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 56px;
}

.section-heading .pill {
  margin-bottom: 18px;
}

.section-heading h3 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.12;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.section-heading p {
  margin-top: 16px;
  color: #4b5563;
  font-size: 1.02rem;
}

.top-line {
  height: 2px;
  background: linear-gradient(
    90deg,
    rgba(220, 38, 38, 0.3),
    rgba(245, 158, 11, 0.3),
    rgba(220, 38, 38, 0.3)
  );
}

/* =========================================================
   08. 问题区 / 信息卡
========================================================= */
.card-grid.two-col {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.info-card {
  background: #ffffff;
  border: 1px solid #f3f4f6;
  border-radius: 18px;
  padding: 28px;
  display: flex;
  gap: 18px;
  transition: all 0.3s ease;
}

.info-card:hover,
.book-card:hover,
.testimonial-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 18px 40px rgba(17, 24, 39, 0.08);
  border-color: #fecaca;
}

.icon-box {
  width: 56px;
  height: 56px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  border-radius: 16px;
  background: #fef2f2;
  font-size: 1.4rem;
}

.icon-box.small {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  font-size: 1rem;
}

.info-card h4,
.feature-item h4,
.module-card h4,
.book-card h4,
.pricing-card h4 {
  font-size: 1.2rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.info-card p,
.feature-item p,
.book-body p,
.testimonial-card p {
  color: #4b5563;
}

.section-bottom-note {
  margin-top: 20px;
  text-align: center;
  font-size: 1.1rem;
  color: #030406;
}

/* =========================================================
   09. 左右分栏 / 课程区
========================================================= */
/* Split sections 课程卡片 */
.split-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.image-panel img {
  box-shadow: 0 16px 40px rgba(17, 24, 39, 0.12);
}

.text-panel > .pill {
  margin-bottom: 18px;
}

.text-panel h3 {
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.12;
  font-weight: 800;
  margin-bottom: 18px;
}

.text-panel p {
  color: #4b5563;
  margin-bottom: 10px;
}

.feature-list {
  margin-top: 28px;
  display: grid;
  gap: 20px;
}

.feature-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.floating-stat {
  right: -36px;
  bottom: -54px;
  max-width: 230px;
}

.floating-stat strong {
  color: #13824c;
  font-size: 1.2rem;
}



/* Books 卡片项 */
.book-grid,
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
}

.book-card {
  background: #ffffff;
  border: 1px solid #f3f4f6;
  border-radius: 20px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.book-top {
  padding: 28px 24px 20px;
  text-align: center;
  background: linear-gradient(180deg, #f9fafb, #f3f4f6);
  border-bottom: 1px solid #f3f4f6;
}

.book-emoji {
  font-size: 3rem;
  margin-bottom: 12px;
}

.level-badge {
  display: inline-block;
  margin-bottom: 14px;
  padding: 8px 12px;
  border-radius: 9999px;
  background: #ecfdf5;
  color: #15803d;
  font-size: 0.85rem;
  font-weight: 700;
}

.book-body {
  padding: 24px;
}

.book-body p + p {
  margin-top: 14px;
}

.老师评语 {
  margin-top: 32px;
  background: #fef2f2;
  border-radius: 18px;
  padding: 28px;
  text-align: center;
}
/* 书名居中 */
.book-card h4,
.book-title {
  display: block;
  width: 100%;
  text-align: center;
  margin: 12px 0 0;
  font-size: 1.15rem;
  font-weight: 800;
  color: #111;
}

/* Testimonials */
.testimonial-card {
  background: #ffffff;
  border: 1px solid #f3f4f6;
  border-radius: 20px;
  padding: 28px;
  transition: all 0.3s ease;
}

.stars {
  color: #f59e0b;
  font-size: 1.1rem;
  margin-bottom: 12px;
}

.success-badge {
  display: inline-block;
  background: #ecfdf5;
  color: #15803d;
  padding: 8px 12px;
  border-radius: 9999px;
  font-size: 0.88rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.author {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid #f3f4f6;
  color: #6b7280;
  font-weight: 600;
}

/* 电脑版：老师区域 4:3 比例 */
@media (min-width: 992px) {
  .teacher-block:not(.reverse) .image-card {
    width: 92%;          /* 这里改第一张图片大小 */
    grid-template-columns: 4fr 3fr; 
    position: relative;
    border-radius: 24px; /* 圆角 */
    overflow: hidden; /* 超出裁切 */
    aspect-ratio: 1 / 1; /* 图片区域保持正方形 */
  }

  .teacher-block.reverse {
    grid-template-columns: 4fr 3fr; /* 第二个老师左右反过来时，比例也反过来 */
  }

  .teacher-block .image-panel {
    width: 92%;
  }

  .teacher-block .image-card {
    position: relative;
    border-radius: 24px; /* 圆角 */
    overflow: hidden; /* 超出裁切 */
    aspect-ratio: 1 / 1; /* 图片区域保持正方形 */
  }

  .teacher-block .image-card img {
    width: 100%;
    height: 100%;
    object-fit: cover; /* 不变形，自动裁切 */
    object-position: center center; /* 显示图片中间位置 */
    display: block;
  }

  .teacher-block .text-panel {
    padding: 10px 0;
  }
}

/* 手机端自适应 */
@media (max-width: 768px) {
  .instructor-card img {
    max-width: 100%;        /* 小屏幕下铺满 */
  }
}
.floating-love {
  left: 50%;
  transform: translateX(-50%);
  bottom: -24px;
  max-width: 280px;
  text-align: center;
}

.credentials {
  margin-top: 26px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.credential {
  background: #ffffff;
  border: 1px solid #f3f4f6;
  border-radius: 16px;
  padding: 16px;
  font-weight: 700;
  color: #374151;
}

/* Pricing第一套 */
.pricing-section {
  position: relative;
  background: linear-gradient(to bottom, rgba(202, 44, 44, 0.887), #ffffff 35%);
}

.pricing-card {
  position: relative;
  background: #ffffff;
  border: 2px solid #fecaca;
  border-radius: 26px;
  padding: 34px;
  box-shadow: 0 24px 60px rgba(220, 38, 38, 0.12);
}

.best-value {
  position: absolute;
  top: 0;
  right: 0;
  background: #ea2704;
  color: #ffffff;
  padding: 12px 16px;
  border-radius: 0 24px 0 18px;
  font-size: 0.82rem;
  font-weight: 800;
}

.pricing-sub {
  margin-top: 8px;
  color: #6b7280;
}

.price {
  margin: 24px 0 10px;
}

.old-price {
  display: inline-block;
  margin-right: 10px;
  color: #9ca3af;
  text-decoration: line-through;
  font-size: 1.2rem;
}
.save-text {
  color: #dc2626;
  font-weight: 700;
  margin-bottom: 24px;
}

/* Final CTA */
.final-cta {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #dc2626, #b91c1c);
  color: #ffffff;
  text-align: center;
}

.final-content {
  position: relative;
  z-index: 1;
}

.final-content h3 {
  font-size: clamp(2.2rem, 4vw, 3.5rem);
  line-height: 1.1;
  font-weight: 800;
}

.final-content h3 span {
  text-decoration: underline;
  text-decoration-color: #fbbf24;
  text-underline-offset: 8px;
  text-decoration-thickness: 4px;
}

.final-content p {
  margin-top: 16px;
  color: #fee2e2;
  font-size: 1.05rem;
}

.final-content .thai-line {
  color: #fecaca;
  margin-bottom: 28px;
}

.final-trust {
  margin-top: 26px;
  display: flex;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
  color: #fecaca;
  font-weight: 600;
}

.final-bg-1 {
  width: 320px;
  height: 320px;
  left: -60px;
  top: -80px;
  background: rgba(255, 255, 255, 0.08);
}

.final-bg-2 {
  width: 260px;
  height: 260px;
  right: -50px;
  bottom: -60px;
  background: rgba(255, 255, 255, 0.08);
}

/* Footer */
.site-footer {
  background: #111827;
  color: #ffffff;
}

.footer-row {
  padding: 34px 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.footer-brand {
  font-size: 1.2rem;
  font-weight: 800;
}

.footer-brand span {
  color: #f87171;
}

.site-footer p {
  color: #9ca3af;
  margin-top: 8px;
}

.footer-links {
  display: flex;
  gap: 22px;
  color: #9ca3af;
}

.footer-links a:hover {
  color: #ffffff;
}

.footer-bottom {
  border-top: 1px solid #1f2937;
  padding: 16px 0 24px;
  text-align: center;
}

.footer-bottom p {
  margin-top: 0;
}


@media (max-width: 767px) {
  .hero {
    position: relative;
    overflow: hidden;
    padding: 20px 0 44px;
    background:
      linear-gradient(rgba(255,255,255,0.72), rgba(255,255,255,0.72)),
      url("hero.jpg") center center / cover no-repeat;
  }

  .hero-image-wrap {
    display: none;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 22px;
    min-height: auto;
    align-items: start;
  }
}
@media (max-width: 520px) {
  .container {
    width: min(100% - 20px, 1280px);
  }

  .btn-large,
  .btn-primary,
  .btn-secondary,
  .btn-white {
    width: 100%;
  }

  .social-proof {
    align-items: flex-start;
  }

  .proof-text {
    gap: 10px;
  }

  .pricing-card,
  .included-box,
  .teacher-tip,
  .testimonial-card,
  .book-body,
  .book-top,
  .module-card,
  .info-card {
    padding-left: 20px;
    padding-right: 20px;
  }

  .new-price {
    font-size: 3rem;
  }
}
/*MARKER*/
.instructor-section .container {
  max-width: 1200px;
  margin: 0 auto;
}

.teacher-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.teacher-block + .teacher-block {
  margin-top: 80px;
  padding-top: 40px;
  border-top: 1px solid #e5e7eb;
}

.teacher-block.reverse .image-panel {
  order: 2;
}

.teacher-block.reverse .text-panel {
  order: 1;
}

.text-panel,
.image-panel {
  min-width: 0;
}

.text-panel h3 {
  font-size: 2rem;
  line-height: 1.3;
  margin: 16px 0 20px;
}

.text-panel p {
  margin-bottom: 16px;
  line-height: 1.8;
}

.credentials {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 20px;
}

.credential {
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 14px;
  padding: 14px 16px;
}

.instructor-card {
  position: relative;
}

.floating-love {
  position: absolute;
  left: 20px;
  bottom: 20px;
  background: #ffffff;
  padding: 12px 16px;
  border-radius: 14px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
  max-width: 80%;
}

 /* ========================================
   💰 PRICING（三卡片版本）
======================================== */

/* ===== PRICING ===== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
  margin-top: 60px;
}

.pricing-card {
  position: relative;
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 24px;
  padding: 30px;
  text-align: center;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

/* 你的 HTML 用的是 featured，不是 highlight */

.pricing-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.08);
  border-color: #d20d0d;
}

.pricing-card h4 {
  font-size: 22px;
  margin-bottom: 10px;
}

/* 你的 HTML 用的是 pricing-sub，不是 sub */
.pricing-sub {
  color: #6b7280;
  margin-bottom: 14px;
}

.price {
  margin-bottom: 10px;
}

.old-price {
  font-size: 18px;
  color: #9ca3af;
  text-decoration: line-through;
}

.new-price {
  font-size: 36px;
  font-weight: 800;
  color: #dc2626;
  line-height: 1;
}

.new-price span {
  font-size: 16px;
  color: #6b7280;
  font-weight: 500;
  margin-left: 4px;
}

/* 你的 HTML 用的是 save-text */
.save-text {
  margin-top: 6px;
  font-size: 14px;
  color: #dc2626;
  font-weight: 700;
}

.pricing-list {
  text-align: center;
  display: grid;
  gap: 12px;
  margin-bottom: 28px;
  justify-items: center;
}

.pricing-list li::before {
  content: "✓ ";
  color: #0c7e21;
  font-weight: 700;
}

/* 你的 HTML 用的是 best-value */
.best-value {
  position: absolute;
  top: 0;
  right: 0;
  padding: 8px 14px;
  background: #dc2626;
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  border-top-right-radius: 24px;
  border-bottom-left-radius: 14px;
}


/* ===== 📱 响应式 ===== */
@media (max-width: 768px) {

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

  .pricing-card.highlight {
    transform: none;
  }

  .pricing-card.highlight:hover {
    transform: translateY(-6px);
  }
}
.final-cta {
  padding: 60px 0;
}

.final-content h3 {
  font-size: clamp(2rem, 3vw, 2.8rem);
}

.final-content p {
  margin-top: 10px;
}

.final-trust {
  margin-top: 16px;
}
.pricing-section {
  margin-bottom: 60px;
}

.final-cta {
  margin-top: 40px;
}.final-cta {
  padding-bottom: 30px;
}

.site-footer {
  margin-top: -10px;
}
.top-line {
  margin-top: -16px;
  margin-bottom: 12px;
}

section {
  padding-top: 16px;
}
.teacher-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: stretch;
}


.teacher-block .image-panel img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}
/* ===== 支付二级界面 ===== */
.payment-page {
  min-height: 100vh;
  padding: 96px 0;
  background: linear-gradient(to bottom, #f9fafb, #ffffff);
}

.payment-box {
  max-width: 1000px;
  margin: 0 auto;
  background: #ffffff;
  border-radius: 24px;
  padding: 120px;
  box-shadow: 0 20px 50px rgba(17, 24, 39, 0.08);
  text-align: center;
  border: 1px solid #f3f4f6;
}

.payment-box .section-heading {
  margin: 0 auto 40px;
}

.payment-box .section-heading p {
  margin-top: 14px;
  color: #6b7280;
}

.payment-options {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-top: 32px;
}

.payment-card {
  display: block;
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 20px;
  padding: 28px;
  text-align: left;
  transition: all 0.3s ease;
  text-decoration: none;
  color: inherit;
}

.payment-card:hover {
  transform: translateY(-6px);
  border-color: #fecaca;
  box-shadow: 0 18px 40px rgba(17, 24, 39, 0.08);
}

.payment-icon {
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  background: #fef2f2;
  font-size: 1.5rem;
  margin-bottom: 14px;
}

.payment-card h3 {
  font-size: 1.25rem;
  margin-bottom: 8px;
  color: #111827;
  font-weight: 800;
}

.payment-card p {
  margin: 0;
  color: #6b7280;
  line-height: 1.6;
}

.back-link {
  display: inline-block;
  margin-top: 48px;
  color: #6b7280;
  font-weight: 700;
  transition: 0.2s;
}

.back-link:hover {
  color: #dc2626;
}

@media (max-width: 768px) {
  .payment-page {
    padding: 72px 0;
  }

  .payment-box {
    padding: 32px 22px;
  }

  .payment-options {
    grid-template-columns: 1fr;
  }

  .footer-row {
    gap: 24px;
  }
}
/* ===== 支付三级界面 ===== */
.payment-detail-card {
  max-width: 560px;
  margin: 30px auto;
  padding: 32px;
  border-radius: 20px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
  text-align: center;
}


.payment-detail-card p {
  font-size: 16px;
  color: #333;
  margin-bottom: 12px;
}

.qr-box {
  display: flex;
  justify-content: center;
  margin-bottom: 24px;
}

.qr-box img {
  width: 100%;
  max-width: 540px;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  border-radius: 12px;
  background: #fff;
}

.payment-info {
  text-align: left;
}

.back-link {
  display: inline-block;
  margin-top: 24px;
  color: #e60012;
  text-decoration: none;
  font-weight: 600;
}

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




/* ======= 手机版专用覆盖样式 说明：把这整段直接放到全局 CSS 最底部 只影响手机，不影响电脑版 ======= */

@media (max-width: 768px) { /* ===== 01. 全局收紧 ===== */ section { padding: 52px 0; }

.container { width: min(100% - 20px, 1280px); }

.section-heading { max-width: 100%; margin: 0 auto 32px; }

.section-heading h3 { font-size: clamp(1.7rem, 6vw, 2.2rem); line-height: 1.15; }

.section-heading p { font-size: 0.95rem; margin-top: 12px; }

/* ===== 02. 顶部导航：只保留 logo + 3个导航 + 按钮 ===== */
@media (max-width: 768px) {
  .site-header .nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 6px;
    padding: 6px 0;
    min-height: 52px;
    flex-wrap: nowrap;
  }

  .logo {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
  }

  .logo-text {
    display: none;
  }

  .nav-links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    white-space: nowrap;
    flex: 1;
    min-width: 0;
    overflow: hidden;
  }

  .nav-cta {
    flex-shrink: 0;
    white-space: nowrap;
    width: auto;
    padding: 5px 12px;    /* 改这里是红色按钮长度 */
    font-size: 0.54rem;
    line-height: 1;
    border-radius: 9999px;
  }
}
/* ===== 03. Hero 首屏 ===== */ 
.hero {
  position: relative; /* 让内部定位正常 */
  overflow: hidden; /* 隐藏溢出内容 */
  min-height: 80vh; /* 首屏至少等于一屏高 */
  padding: 20px 0 44px; /* 首屏上下留白 */
  padding-bottom: 0; /* 去掉首屏底部空白 */
  background:
    linear-gradient(rgba(255, 255, 255, 0.75), rgba(255,255,255,0.75)), /* 白色半透明遮罩，让字更清楚 */
    url(images/hero2.jpg) center center / cover no-repeat; /* 首页背景图 */
}
@media (max-width: 768px) {
  .hero-bg,
  .hero-bg-1,
  .hero-bg-2,
  .hero-bg-3 {
    display: none;
  }
}
@media (max-width: 768px) {
  .hero-text {
    display: flex;
    flex-direction: column;
  }
}

@media (max-width: 768px) {
  .hero-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    width: 100%;
  }

  .hero-actions .btn {
    flex: 1 1 0;
    max-width: 160px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 700;
    padding: 14px 24px;
    border-radius: 9999px;
    white-space: nowrap;
  }
}

  .social-proof {
    order: 2; /* 图标 + 2,500+ 排第二 */
    margin-top: auto; /* 关键：把这一块推到底部 */
    display: flex; /* 内部横向/纵向都行 */
    flex-direction: column; /* 图标在上，文字在下 */
    gap: 2px; /* 紧凑一点 */
    padding-bottom: 4px; /* 离底部留一点点 */
  }

  .avatars {
    order: 1; /* 图标在前 */
  }

  .proof-text {
    order: 2; /* 2,500+ 在后 */
  }
}
@media (max-width: 768px) {
  .hero-desc {
    margin-bottom: 0px; /* 增加正文后间距，推开下面的社交区 */
  }
}
.hero-grid { grid-template-columns: 1fr; gap: 22px; min-height: auto; align-items: start; }

.hero-text h2 { margin-top: 10px; font-size: clamp(1.35rem, 5vw, 2rem); line-height: 1.15; }/* 首页文本间距大小 */

.hero-desc { margin-top: 200px; font-size: 0.98rem; line-height: 1.65; }/* 首页文本间距大小 */

.thai-line { font-size: 2.92rem; margin-top: 8px; }
/* 首屏两个按钮：手机版并排 */ 
.hero-actions { margin-top: 22px; display: flex; flex-direction: row; flex-wrap: nowrap; gap: 8px; align-items: center; }

.social-proof { margin-top: 18px; gap: 12px; align-items: flex-start; }

.avatars span { width: 34px; height: 34px; margin-left: -8px; }

.proof-text { gap: 8px; font-size: 0.98rem; }

.divider { height: 8px; }

/* 桌面默认两列 */
.card-grid.two-col {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

/* 手机版单列 */
@media (max-width: 767px) {
  .card-grid.two-col {
    grid-template-columns: 1fr;
    gap: 14px;
    max-width: 760px;
    margin: 0 auto;
  }

  .info-card {
    padding: 16px 14px;
    gap: 12px;
    align-items: flex-start;
  }

  .icon-box {
    width: 44px;
    height: 44px;
    flex: 0 0 44px;
    font-size: 1rem;
    line-height: 1;
    align-self: flex-start;
    margin-top: 0;
  }

  .info-content {
    min-width: 0;
    flex: 1;
  }

  .info-content h4 {
    margin: 0 0 6px 0;
    font-size: 1rem;
    line-height: 1.25;
  }

  .info-content p {
    margin: 0;
    font-size: 0.9rem;
    line-height: 1.65;
    color: #2157a4;
  }
}


/* ===== 05. 课程/左右分栏区：手机版变单列 ===== */ 
@media (max-width: 768px) {
  .top-line {
    height: 1px;              /* 线条粗细 */
    margin-top: -51.5px;        /* 上下位置 */
    margin-bottom: 0px;     /* 和内容的距离 */
    background: #cb2451;     /* 纯红色 */
  }
}
@media (max-width: 768px) {
  .split-grid {
    display: grid;              /* 单列布局 */
    grid-template-columns: 1fr; /* 强制一列 */
    gap: 20px;                  /* 间距 */
    width: 100%;                /* 占满屏幕 */
  } /* split-grid 手机版 */

  .text-panel,
  .image-panel {
    width: 100%;                /* 占满一行 */
    max-width: 100%;            /* 不超出 */
  } /* 两栏都变全宽 */

  .image-panel {
    order: 1;                   /* 图片在上 */
    position: relative;         /* 让浮动卡片以它为参照 */
    overflow: hidden;           /* 裁掉超出部分 */
  } /* 图片区 */

  .text-panel {
    order: 2;                   /* 文字在下 */
  } /* 文字区 */

  .floating-card {
    position: absolute;         /* 浮动定位 */
    z-index: 9999; /* 放最上层 */
    background: rgba(255, 255, 255, 0.78); /* 磨砂背景 */
    border: 1px solid #ffffff;  /* 边框 */
    border-radius: 18px;        /* 圆角 */
    padding: 13px 14px;        /* 内边距 */
    box-shadow: 0 18px 40px rgba(17, 24, 39, 0.14); /* 阴影 */
    max-width: calc(100vw - 24px); /* 不超屏幕 */
    box-sizing: border-box;     /* 包含 padding */
  } /* 93% 标签 */

  .floating-card strong {
    display: block;             /* 独占一行 */
    margin-bottom: 4px;         /* 标题和正文间距 */
    font-size: 0.98rem;         /* 标题大小 */
  } /* 标题 */

  .floating-card p {
    margin: 0;                  /* 去掉默认外边距 */
    font-size: 0.9rem;          /* 正文字号 */
    color: #6b7280;             /* 文字颜色 */
    line-height: 1.2;           /* 行高 */
  } /* 正文 */

  .floating-bottom-left {
    left: 8px;                  /* 不要负值 */
    bottom: 20px;               /* 距底部 */
  } /* 左下角卡片 */

  .floating-top-right {
    right: 8px;                 /* 右边留一点 */
    top: 10px;                  /* 顶部位置 */
  } /* 右上角卡片 */
}
@media (max-width: 768px) {
  .floating-stat {
    z-index: 9999 !important; /* 手机版也强制最上层 */
    right:-4px !important;          /* 不要超出右边 */
    bottom:-4px !important;        /* 不要超出底部 */
    left: auto !important;          /* 清掉左定位干扰 */
    width: 130px !important;        /* 固定宽度，避免撑开 */
    max-width: calc(100vw - 24px) !important; /* 不超过屏幕 */
    box-sizing: border-box !important;        /* 宽度包含 padding */
  }

  .floating-card {
    position: absolute;
    padding: 3px 2px;             /* 缩小内边距 */
    overflow: hidden;               /* 防止内容撑出 */
     z-index: 9999;
  }

  .floating-card strong {
    font-size: 0.68rem;             /* 标题小一点 */
    margin-bottom: 1px;
  }

  .floating-card p {
    font-size: 0.68rem;             /* 正文小一点 */
    line-height: 1.25;
    margin: 0;
    word-break: break-word;         /* 强制换行 */
  }

  .image-panel {
    position: relative;              /* 让绝对定位以它为参照 */
    overflow: hidden;                /* 裁掉超出部分 */
  }
}
/* ===== 06. 书本推荐区：手机版保持左右，但压缩图片和文字 ===== */ 
@media (max-width: 768px) {
  .book-grid {
    grid-template-columns: 1fr; /* 手机版单列 */
    gap: 18px; /* 卡片间距 */
  }

  .book-card {
    display: grid; /* 用 grid 排版 */
    grid-template-columns: 45% 55%; /* 左图 35%，右文 65% */
    grid-template-rows: auto 1fr; /* 上标题，下正文 */
    grid-template-areas:
      "image title"
      "image body"; /* 左侧图片跨两行 */
    align-items: stretch; /* 拉满高度 */
    min-height: 250px; /* 卡片高度 */
    border-radius: 20px; /* 圆角 */
    overflow: hidden; /* 防止溢出 */
    position: relative; /* 作为内部定位基准 */
    .book-card {
  background: linear-gradient(
    to right,
    #ffffff 0%,
    #ffffff 35%,
    #f9fafb 100%
  );
}
  }

  .book-top {
    grid-area: image; /* 放到左侧图片区 */
    position: relative; /* 不再绝对定位 */
    padding: 0; /* 去掉内边距 */
    border: 0; /* 去掉边框 */
    overflow: hidden; /* 图片裁切 */
  }

  .book-top img {
  width: 100%; /* 图片占满图片区 */
  height: 100%; /* 图片占满高度 */
  object-fit: cover; /* 保持图片铺满 */
  object-position: left center; /* 图片主体偏左 */
  display: block; /* 去掉底部空隙 */

  -webkit-mask-image: linear-gradient(
    to right,
    rgba(0, 0, 0, 1) 0%,   /* 左边完全显示 */
    rgba(0, 0, 0, 1) 90%,  /* 大部分保持完整 */
    rgba(0, 0, 0, 0) 100%  /* 右边慢慢消失 */
  );
  mask-image: linear-gradient(
    to right,
    rgba(0, 0, 0, 1) 0%,
    rgba(0, 0, 0, 1) 90%,
    rgba(0, 0, 0, 0) 100%
  );
}

  .book-top::after {
    content: ""; /* 渐变层 */
    position: absolute;
    inset: 0;
    background: linear-gradient(
      to right,
      rgba(255, 255, 255, 0.02) 0%,
      rgba(255, 255, 255, 0.10) 35%,
      rgba(255, 255, 255, 0.78) 75%,
      rgba(255, 255, 255, 0.95) 100%
    );
    z-index: 1;
  }

  .book-title {
    grid-area: title; /* 放到右上标题区 */
    position: relative; /* 不用 absolute */
    z-index: 2;
    margin: 0; /* 去掉默认间距 */
    padding: 14px 14px 6px 14px; /* 右上留白 */
    font-size: 0.98rem; /* 标题大小 */
    font-weight: 800; /* 标题加粗 */
    line-height: 1.2; /* 行高 */
    text-align: left; /* 标题左对齐 */
    align-self: end; /* 靠上方偏下，视觉更自然 */
    color: #111827; /* 标题颜色 */
  }

  .book-body {
    grid-area: body; /* 放到右侧正文区 */
    margin-left: -25px; /* 轻微往左压一点 */
    position: relative; /* 不用 absolute */
    z-index: 2;
    padding: 0 14px 14px 14px; /* 右下留白 */
    display: flex; /* 文字上下排列 */
    flex-direction: column;
    justify-content: flex-start; /* 顶部开始 */
    gap: 8px; /* 段落间距 */
    background: transparent; /* 透明背景 */
    text-align: left;
  }

  .book-body p {
    margin: 0; /* 去掉默认段落间距 */
    font-size: 0.78rem; /* 正文字号 */
    line-height: 1.45; /* 行高 */
    color: #4b5563; /* 文字颜色 */
  }

  .book-body p strong {
    color: #111827; /* 强调文字更黑 */
  }

  .book-body p + p {
    margin-top: 0; /* 不额外拉开 */
  }
}

/* ===== 07. 评论区：手机版单列，不并排 ===== */ .testimonial-grid { grid-template-columns: 1fr; gap: 18px; }

.testimonial-card { padding: 18px 16px; }

.testimonial-card p { font-size: 0.92rem; line-height: 1.7; }

.stars { font-size: 1rem; margin-bottom: 10px; }

.success-badge { font-size: 0.8rem; padding: 6px 10px; margin-bottom: 12px; }

.author { font-size: 0.85rem; margin-top: 14px; padding-top: 12px; }

@media (max-width: 768px) {
  /* =====================================================
     教师模块：手机版加强版
     目标：更像高级卡片，更接近你截图里的效果
  ===================================================== */

  .teacher-block {
    display: grid;                 /* 单列布局 */
    grid-template-columns: 1fr;    /* 一列 */
    gap: 10px;                     /* 图片和文字的间距 */
    align-items: start;            /* 顶部对齐 */
    margin-bottom: 32px;           /* 每个老师卡片底部留白 */
    padding: 16px 14px;            /* 整体内边距 */
    border-radius: 22px;           /* 整体圆角 */
    background: linear-gradient(180deg, #ffffff 0%, #fbfbfc 100%); /* 轻微渐变底色 */
    border: 1px solid #d2d4d8;     /* 淡边框 */
    box-shadow: 0 14px 30px rgba(17, 24, 39, 0.06); /* 柔和阴影 */
    overflow: hidden;              /* 防止内容溢出圆角 */
  }

  /* 取消桌面端 reverse 顺序的影响 */
  .teacher-block.reverse .image-panel,
  .teacher-block.reverse .text-panel {
    order: unset;                  /* 手机上不反转 */
  }

  /* =====================================================
     图片区域
  ===================================================== */
  .image-panel {
    position: relative;            /* 让浮层可定位 */
    border-radius: 25px;           /* 图片圆角 */
    overflow: hidden;              /* 裁掉超出部分 */
  }

  .instructor-card {
    position: relative;            /* 给浮层标签一个定位基准 */
    border-radius: 22px;           /* 圆角一致 */
    overflow: hidden;              /* 图片不外溢 */
    background: #ffffff;           /* 图片底色 */
  }

  .instructor-card img {
    width: 100%;                   /* 图片占满宽度 */
    height: auto;                  /* 保持比例 */
    display: block;                /* 去掉底部空隙 */
    object-fit: cover;             /* 图片更饱满 */
    aspect-ratio: 4 / 5;           /* 统一人物图比例 */
    border-radius: 22px;           /* 圆角一致 */
    transform: scale(1.0);        /* 轻微放大，减少边缘空白感 */
  }

  /* 图片上叠一层轻微渐变，增加高级感 */
  .instructor-card::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(
      to top,
      rgba(17, 24, 39, 0.48) 0%,
      rgba(17, 24, 39, 0.00) 45%
    );
    pointer-events: none;
    z-index: 1;
  }

  /* 图片左下角浮层标签 */
  .floating-love {
    position: absolute;
    left: 12px;                    /* 离左边留白 */
    bottom: 12px;                  /* 离底部留白 */
    z-index: 2;                    /* 在图片和渐变层上面 */
    max-width: 88%;                /* 不要太宽 */
    padding: 10px 12px;            /* 内边距 */
    border-radius: 14px;           /* 圆角 */
    background: rgba(255, 255, 255, 0.72); /* 半透明白 */
    backdrop-filter: blur(10px);   /* 磨砂 */
    -webkit-backdrop-filter: blur(10px); /* Safari 兼容 */
    box-shadow: 0 10px 22px rgba(17, 24, 39, 0.12); /* 柔和阴影 */
    font-size: 0.84rem;            /* 字号稍小 */
    line-height: 1.4;              /* 行高 */
    color: #111827;                /* 文字颜色 */
  }

  /* =====================================================
     文字区域
  ===================================================== */
  .text-panel {
    min-width: 0;                  /* 防止文字撑宽 */
    text-align: left;              /* 左对齐 */
  }

  /* 小标签：身份 / 领域 */
  .text-panel > .pill {
    display: inline-flex;          /* 行内胶囊 */
    align-items: center;
    margin-bottom: 10px;           /* 和标题拉开 */
    font-size: 0.74rem;            /* 更小一点更精致 */
    padding: 7px 11px;             /* 标签内边距 */
    border-radius: 9999px;         /* 胶囊形 */
  }

  /* 教师姓名 / 主标题 */
  .text-panel h3 {
    font-size: 1.45rem;            /* 标题大小 */
    line-height: 1.18;             /* 行高 */
    font-weight: 800;              /* 加粗 */
    margin: 0 0 10px;              /* 下方留白 */
    letter-spacing: -0.02em;       /* 更高级一点 */
    color: #111827;                /* 深色标题 */
  }

  /* 简介文字 */
  .text-panel p {
    font-size: 0.92rem;            /* 正文字体 */
    line-height: 1.72;             /* 舒服的行距 */
    color: #4b5563;                /* 柔和正文色 */
    margin: 0 0 10px;              /* 段落间距 */
  }

  /* =====================================================
     资历标签 / 信息块
  ===================================================== */
  .credentials {
    display: grid;                 /* 网格排版 */
    grid-template-columns: 1fr 1fr; /* 两列 */
    gap: 10px;                     /* 标签间距 */
    margin-top: 14px;              /* 和正文分开 */
  }

  .credential {
    background: #ffffff;           /* 白底 */
    border: 1px solid #e5e7eb;     /* 浅边框 */
    border-radius: 14px;           /* 圆角 */
    padding: 12px 12px;            /* 内边距 */
    font-size: 0.84rem;            /* 字体小一点 */
    line-height: 1.35;             /* 行高 */
    font-weight: 700;              /* 半粗 */
    color: #374151;                /* 深灰文字 */
    box-shadow: 0 8px 18px rgba(17, 24, 39, 0.04); /* 很轻的阴影 */
  }

  /* =====================================================
     如果有多个教师卡片，卡片之间更像一个系列
  ===================================================== */
  .teacher-block + .teacher-block {
    margin-top: 22px;              /* 两个卡片间距 */
    padding-top: 22px;             /* 上方留白 */
    border-top: 1px solid #f3f4f6; /* 轻分割线 */
  }

  /* 如果文字太长，限制最大宽度感受更稳 */
  .text-panel h3,
  .text-panel p {
    max-width: 100%;               /* 防止过宽 */
  }
}
@media (max-width: 768px) {
  /* ===== 价格区：手机版两列排列，保持和电脑版同一风格 ===== */
  .pricing-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr)); /* 两列 */
    gap: 12px; /* 卡片间距 */
    margin-top: 24px; /* 上方留白 */
  }

  /* ===== 单张价格卡 ===== */
  .pricing-card {
    position: relative; /* 让 BEST VALUE 标签能贴在卡片内 */
    display: flex; /* 让内容上下排列 */
    flex-direction: column; /* 纵向结构 */
    justify-content: space-between; /* 内容分布更均匀 */
    min-height: 100%; /* 两列高度更统一 */
    padding: 18px 12px 16px; /* 卡片内边距 */
    border: 1px solid #e5e7eb; /* 浅边框 */
    border-radius: 22px; /* 圆角 */
    background: #ffffff; /* 白底 */
    box-shadow: 0 10px 24px rgba(17, 24, 39, 0.05); /* 轻阴影 */
    text-align: center; /* 内容居中 */
    overflow: hidden; /* 让角标和卡片圆角贴合 */
  }
  .pill-red2 {
  position: absolute;   /* 脱离文档流 */
  top: 0px;               /* 贴到顶部 */
  left: 50%;            /* 水平居中 */
  transform: translate(-50%, 10%); /* 🔥 Special Launch 标签往上抬一点，压在顶部 */
  z-index: 3;           /* 放到最上层 */
}

  /* ===== 推荐卡：和电脑版一样的强调方式 ===== */
  .pricing-card.highlight {
    border: 1.5px solid #82410b; /* 橙红边框 */
    background: linear-gradient(180deg, #fff7f0 0%, #ffffff 55%); /* 轻微暖色底 */
    transform: none; /* 不放大，保持整齐 */
  }

  .pricing-card.highlight:hover {
    transform: none; /* 手机版不做 hover 放大 */
  }

  /* ===== BEST VALUE 标签：贴在卡片右上角，融合感更强 ===== */
  .best-value {
    position: absolute; /* 贴在卡片内部 */
    top: 0; /* 顶部 */
    right: 0; /* 右上角 */
    z-index: 2; /* 在卡片内容上方 */
    padding: 7px 12px; /* 标签大小 */
    border-radius: 0 0 0 14px; /* 只保留下左圆角，像卡片自带的一部分 */
    background: #f80202; /* 标记色 */
    color: #ffffff; /* 白字 */
    font-size: 0.66rem; /* 小一点更精致 */
    font-weight: 800; /* 加粗 */
    letter-spacing: 0.04em; /* 字距 */
    line-height: 1; /* 紧凑 */
    box-shadow: 0 8px 18px rgba(255, 77, 31, 0.18); /* 轻阴影 */
  }

  /* ===== 推荐卡给标签留出空间，避免压住标题 ===== */
  .pricing-card.highlight {
    padding-top: 35px; /* 给顶部标签留位置 */
  }

  /* ===== 标题 ===== */
  .pricing-card h4 {
    font-size: 1rem; /* 标题稍小一点 */
    line-height: 1.2; /* 行高 */
    margin: 0 0 6px; /* 标题下间距 */
    color: #111827; /* 标题颜色 */
  }

  /* ===== 副标题/说明文字 ===== */
  .pricing-card .sub,
  .pricing-card p {
    font-size: 0.82rem; /* 说明文字 */
    line-height: 1.45; /* 行高 */
    color: #6b7280; /* 灰一点更高级 */
    margin: 0 0 10px; /* 下方留白 */
  }

  /* ===== 价格区 ===== */
  .new-price {
    font-size: 1.95rem; /* 手机端价格大小 */
    line-height: 1; /* 价格紧凑 */
    font-weight: 800; /* 更突出 */
    color: #dc2626; /* 与电脑版一致的红色 */
  }

  .old-price {
    font-size: 0.78rem; /* 原价小一点 */
    color: #9ca3af; /* 浅灰 */
  }

  .save {
    font-size: 0.76rem; /* 节省文案 */
    margin-top: 2px; /* 和价格拉开 */
    color: #dc2626; /* 红色强调 */
    font-weight: 700;
  }

  /* ===== 卖点列表 ===== */
  .pricing-list {
    text-align: left; /* 卖点左对齐更清晰 */
    margin: 0px 0 5px; /* 上下间距 */
    gap: 6px; /* 条目间距 */
    font-size: 0.78rem; /* 小一点更整齐 */
    line-height: 1.7; /* 行高 */
  }

  .pricing-list li {
    margin: 0;
  }

  .pricing-list li::before {
    content: "✓ "; /* 勾号 */
    color: #15803d; /* 绿色 */
    font-weight: 700;
  }

  /* ===== 按钮 ===== */
  .pricing-card .btn {
    width: 100%; /* 通栏按钮 */
    padding: 10px 12px; /* 按钮高度 */
    border-radius: 9999px; /* 圆角按钮 */
    font-size: 0.9rem; /* 按钮字体 */
    font-weight: 500;
  }
}

@media (max-width: 768px) {
  /* ===== 最后行动区 CTA：缩小与上方价格区的距离 ===== */
  .final-cta {
    padding: 28px 0 22px;  /* 顶部留白缩小 */
    margin-top: 0;         /* 去掉与上方的额外间距 */
  }

  .final-content h3 {
    font-size: 1.6rem;     /* 标题稍微收一点 */
    line-height: 1.15;
    margin-top: 0;
  }

  .final-content p {
    font-size: 0.94rem;
    margin-top: 8px;
  }

  .final-trust {
    margin-top: 10px;      /* 信誉区离正文近一点 */
    gap: 10px;
    font-size: 0.86rem;
  }
}

/* ===== 11. 页脚：手机版样式 ===== */
@media (max-width: 767px) {
  .footer-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .footer-links {
    flex-wrap: wrap;
    gap: 14px;
  }

  .footer-links a {
    font-size: 0.94rem;
    font-weight: 590;
  }

  .footer-bottom {
    padding: 0;
  }
}

/* ===== 12. 支付页 ===== */ 
.payment-page { padding: 72px 0; }

.payment-box { padding: 32px 22px; }

.payment-options { grid-template-columns: 1fr; }

.payment-card { padding: 22px; }

.payment-card h3 { font-size: 1.1rem; }

.payment-detail-card { padding: 24px 18px; }

.qr-box img { width: 200px; height: 200px; } 

/* ============= 更小手机：进一步压缩 ============= */ 
@media (max-width: 520px)  {
.container { width: min(100% - 5px, 1280px); }
}
.logo img { height: 54px; }/* 改这里是导航logo大小 */

.nav-links { gap: 8px; }

.nav-links a { font-size: 0.96rem; } /* 改这里是导航字体大小 */

.nav-cta { padding: 12px 15px; font-size: 0.76rem; line-height: 1.1; }/* 这里是导航按钮大小 */

.hero-text h1 { font-size: clamp(2.25rem, 8vw, 2.4rem); }/* 这里是标题字体大小 */

.hero-text h2 { font-size: clamp(1.2rem, 5.5vw, 1.7rem); }

.hero-desc { font-size: 1.2rem; }
.pill { font-size: 0.8rem; line-height: 1.4;padding: 10px 16px; } 

.section-heading h3 { font-size: clamp(1.55rem, 6vw, 2rem); }

.info-card { padding: 15px 16px; }/* 这里是问题区域格式大小 */

.icon-box { width: 40px; height: 40px; flex-basis: 40px; font-size: 0.95rem; }

.info-content h4 { font-size: 0.95rem; }

.info-content p { font-size: 0.86rem; }

.book-top { flex-basis: 96px; padding: 12px 10px; }

.book-body { padding: 14px 12px; }

.book-title { font-size: 0.92rem; }

.book-body p { font-size: 0.84rem; }

.testimonial-card, .pricing-card { padding: 18px 14px; }

.final-content h3 { font-size: 1.65rem; }

.payment-box { padding: 26px 16px; } 
.payment-card { padding: 18px; }
.payment-card h3 { font-size: 1rem; }
/* =========================================================
   iPad 竖屏：价格区改成两列，避免卡片太窄
   适用范围：宽度 768px - 1024px 的竖屏设备
========================================================= */
@media (min-width: 768px) and (max-width: 1024px) and (orientation: portrait) {
  .pricing-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr)); /* 一行两张卡片 */
    gap: 30px; /* 卡片之间的间距 */
  }

  .pricing-card {
    width: 100%;   /* 每张卡片占满自己的网格单元 */
    padding: 22px; /* 适当缩小内边距，避免太拥挤 */
  }
}


/* =========================================================
   iPad 横屏 + 竖屏：Hero 区保持左右布局，图片在右边
   适用范围：宽度 768px - 1366px 的 iPad / 平板设备
========================================================= */
@media (min-width: 768px) and (max-width: 1366px) {
  .hero-grid {
    grid-template-columns: 1.05fr 0.95fr; /* 左文右图，右边图片稍窄 */
    gap: 20px; /* 左右两栏间距 */
    align-items: center; /* 垂直居中对齐 */
    min-height: auto; /* 不强制撑满整屏 */
  }

  .hero-image-wrap {
    display: block; /* 确保图片区域显示，不被隐藏 */
  }

  .hero-image-card img {
    min-height: 420px; /* iPad 上缩小图片高度，避免过高 */
  }
}
/* ===== 强制电脑版 Hero 恢复左右布局 ===== */
@media (min-width: 1025px) {
  .hero-grid {
    display: grid !important;
    grid-template-columns: 1.1fr 0.9fr !important;
    gap: 48px !important;
    align-items: center !important;
    min-height: calc(100vh - 64px) !important;
  }

  .hero-image-wrap {
    display: block !important;
  }

  .hero-image-card {
    position: relative !important;
    border-radius: 24px !important;
    overflow: visible !important;
  }

  .hero-image-card img {
    width: 100% !important;
    min-height: 560px !important;
    object-fit: cover !important;
    display: block !important;
    border-radius: 24px !important;
    box-shadow: 0 25px 60px rgba(17, 24, 39, 0.18) !important;
  }
}
/* ===== 电脑版导航菜单样式 ===== */
@media (min-width: 1025px) {
  .nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  /* 导航链接整体：居中 + 间距 */
  .nav-links {
    display: flex;
    justify-content: center; /* 菜单居中 */
    align-items: center;     /* 垂直居中 */
    gap: 56px;               /* 菜单项之间的距离 */
    font-weight: 990;        /* 字体加粗 */
    font-size: 20px;         /* 电脑版字体大小 */
    text-align: center;      /* 文字居中 */
    flex: 1;                 /* 占中间空间 */
  }

  /* 单个链接 */
  .nav-links a {
    color: #000;
    text-decoration: none;
    transition: color 0.25s ease;
  }

  /* 悬停变色 */
  .nav-links a:hover {
    color: #bc0000;
  }
}