/* ==========================================================
   福AI夜校官网 · 主样式
   设计语言参考 GoodPage：紫蓝渐变 / 圆角卡片 / 柔和阴影
   ========================================================== */

:root {
  --grad-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --grad-hero: linear-gradient(-45deg, #667eea, #764ba2, #f093fb, #4facfe);
  --grad-soft: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
  --c-indigo: #667eea;
  --c-purple: #764ba2;
  --c-pink: #f093fb;
  --c-blue: #4facfe;
  --c-text: #2c3e50;
  --c-text-soft: #5d6c7d;
  --c-muted: #7f8c8d;
  --c-bg: #ffffff;
  --c-bg-light: #f8f9fb;
  --shadow-sm: 0 2px 8px rgba(44, 62, 80, 0.08);
  --shadow-md: 0 8px 24px rgba(102, 126, 234, 0.16);
  --shadow-lg: 0 20px 50px rgba(102, 126, 234, 0.24);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 22px;
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--c-text);
  background: var(--c-bg);
  line-height: 1.75;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; }
ul, ol { margin: 0; padding: 0; list-style: none; }
p { margin: 0 0 0.9em; }
p:last-child { margin-bottom: 0; }
strong { color: inherit; }

.container {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 22px;
}

/* ---------- 通用按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 30px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
  white-space: nowrap;
}

.btn-gradient {
  background: var(--grad-primary);
  color: #fff;
  box-shadow: 0 8px 24px rgba(102, 126, 234, 0.45);
}

.btn-light {
  background: rgba(255, 255, 255, 0.16);
  color: #fff;
  border: 1.5px solid rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.btn-sm { padding: 10px 20px; font-size: 0.9rem; }

.btn:hover {
  transform: translateY(-3px);
}

.btn-gradient:hover { box-shadow: 0 14px 34px rgba(102, 126, 234, 0.55); }
.btn-light:hover { background: rgba(255, 255, 255, 0.28); box-shadow: 0 10px 26px rgba(0, 0, 0, 0.18); }

/* 首页主通道按钮：报名课程 —— 更大更醒目 */
.btn.hero-cta {
  padding: 18px 46px;
  font-size: 1.18rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  min-width: 240px;
  box-shadow: 0 12px 32px rgba(102, 126, 234, 0.55);
}

.btn.hero-cta:hover {
  box-shadow: 0 18px 44px rgba(102, 126, 234, 0.62);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.16);
  color: #fff;
  border: 1.5px solid rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.28);
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.18);
}

.site-header.scrolled .header-signup {
  border-color: rgba(102, 126, 234, 0.45);
  color: var(--c-indigo);
  background: rgba(102, 126, 234, 0.08);
}

.site-header.scrolled .header-admin {
  border-color: rgba(102, 126, 234, 0.45);
  color: var(--c-indigo);
  background: rgba(102, 126, 234, 0.08);
}

/* ---------- 顶部导航 ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  padding: 10px 0;
  transition: background 0.35s ease, box-shadow 0.35s ease, padding 0.35s ease;
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.88);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  box-shadow: 0 6px 24px rgba(44, 62, 80, 0.1);
  padding: 6px 0;
}

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

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: #fff;
  flex-shrink: 0;
}

.site-header.scrolled .brand { color: var(--c-text); }

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 13px;
  background: var(--grad-primary);
  color: #fff;
  font-size: 1.45rem;
  font-weight: 800;
  box-shadow: 0 6px 16px rgba(102, 126, 234, 0.4);
  flex-shrink: 0;
}

.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text strong { font-size: 1.14rem; letter-spacing: 0.02em; }
.brand-text small { font-size: 0.7rem; opacity: 0.85; letter-spacing: 0.08em; }

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

.main-nav a {
  position: relative;
  color: #fff;
  text-decoration: none;
  font-size: 0.94rem;
  font-weight: 500;
  padding: 8px 12px;
  border-radius: 8px;
  transition: color 0.25s ease, background 0.25s ease;
  white-space: nowrap;
}

.site-header.scrolled .main-nav a { color: var(--c-text); }
.main-nav a:hover,
.main-nav a.active {
  background: rgba(255, 255, 255, 0.18);
  color: #fff;
}

.site-header.scrolled .main-nav a:hover,
.site-header.scrolled .main-nav a.active {
  color: var(--c-indigo);
  background: rgba(102, 126, 234, 0.12);
}

.main-nav a.nav-reg {
  font-weight: 700;
  background: rgba(255, 255, 255, 0.16);
}

.site-header.scrolled .main-nav a.nav-reg {
  color: var(--c-indigo);
  background: rgba(102, 126, 234, 0.14);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
}

.main-nav { margin-left: 0; }
.header-actions { margin-left: auto; }

.header-cta {
  color: #fff;
  text-decoration: none;
  box-shadow: 0 5px 14px rgba(102, 126, 234, 0.45);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 9px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  cursor: pointer;
}

.site-header.scrolled .nav-toggle { border-color: rgba(102, 126, 234, 0.4); background: rgba(102, 126, 234, 0.08); }

.nav-toggle span {
  height: 2px;
  width: 100%;
  border-radius: 2px;
  background: #fff;
  transition: transform 0.3s ease, opacity 0.3s ease, background 0.3s ease;
}

.site-header.scrolled .nav-toggle span { background: var(--c-indigo); }

.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 150px 0 90px;
  color: #fff;
  background: var(--grad-hero);
  background-size: 400% 400%;
  animation: gradientShift 16s ease infinite;
  overflow: hidden;
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(36, 35, 92, 0.15) 0%, rgba(53, 40, 120, 0.35) 100%);
}

.hero-bg { position: absolute; inset: 0; overflow: hidden; }
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.45;
  animation: float 12s ease-in-out infinite;
}
.orb-1 { width: 380px; height: 380px; left: -8%; top: 8%; background: #f093fb; }
.orb-2 { width: 320px; height: 320px; right: -5%; top: 32%; background: #4facfe; animation-delay: -4s; }
.orb-3 { width: 300px; height: 300px; left: 30%; bottom: -12%; background: #ffd3a5; opacity: 0.3; animation-delay: -8s; }

@keyframes float {
  0%, 100% { transform: translateY(0) translateX(0) scale(1); }
  50% { transform: translateY(-28px) translateX(18px) scale(1.05); }
}

.hero-inner {
  position: relative;
  z-index: 2;
  text-align: center;
}

.hero-badge {
  display: inline-block;
  padding: 8px 20px;
  border-radius: 50px;
  background: rgba(255, 255, 255, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.45);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  font-size: 0.92rem;
  letter-spacing: 0.05em;
  margin-bottom: 26px;
}

.hero-title {
  margin: 0 0 22px;
  font-size: clamp(2.1rem, 5.4vw, 3.9rem);
  line-height: 1.25;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

.hero-title .dot { color: #ffe27a; }

.hero-lead {
  max-width: 780px;
  margin: 0 auto 42px;
  font-size: clamp(1rem, 2.2vw, 1.2rem);
  color: rgba(255, 255, 255, 0.94);
}

.hero-stats {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
  max-width: 960px;
  margin: 0 auto 38px;
}

.stat {
  flex: 1 1 130px;
  min-width: 132px;
  padding: 18px 12px 14px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: transform 0.3s ease, background 0.3s ease;
}

.stat:hover { transform: translateY(-4px); background: rgba(255, 255, 255, 0.2); }

.stat-num {
  font-size: 2rem;
  font-weight: 800;
  line-height: 1;
  color: #fff;
}

.stat-plus {
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffe27a;
  margin-left: 2px;
}

.stat-label {
  display: block;
  margin-top: 8px;
  font-size: 0.86rem;
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.5;
}

.stat-label small { display: block; font-size: 0.72rem; opacity: 0.8; }

.hero-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 42px;
}

.hero-tags {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  max-width: 860px;
  margin: 0 auto;
}

.hero-tags li {
  padding: 6px 15px;
  border-radius: 50px;
  background: rgba(255, 255, 255, 0.14);
  border: 1px dashed rgba(255, 255, 255, 0.5);
  font-size: 0.84rem;
  color: rgba(255, 255, 255, 0.96);
}

/* ---------- 通用版块 ---------- */
.section { padding: 92px 0; }
.section-alt { background: var(--grad-soft); }
.section-gradient { background: var(--grad-primary); }
.section-deep {
  background: linear-gradient(135deg, #4c3aa8 0%, #2f2266 100%);
}

.section-head { text-align: center; max-width: 860px; margin: 0 auto 54px; }

.section-title {
  position: relative;
  margin: 0 0 28px;
  font-size: clamp(1.7rem, 3.6vw, 2.5rem);
  font-weight: 800;
  color: var(--c-indigo);
  line-height: 1.3;
  letter-spacing: 0.02em;
}

.section-title::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -13px;
  transform: translateX(-50%);
  width: 72px;
  height: 4px;
  border-radius: 4px;
  background: var(--grad-primary);
}

.section-title-light { color: #fff; }
.section-title-light::after { background: rgba(255, 255, 255, 0.9); }

.section-subtitle {
  margin: 14px 0 0;
  font-size: 1.08rem;
  color: var(--c-text-soft);
}

.section-subtitle-light { color: rgba(255, 255, 255, 0.9); }

/* ---------- 卡片 ---------- */
.card {
  border-radius: var(--radius-lg);
  background: #fff;
  box-shadow: var(--shadow-sm);
}

.card-soft {
  padding: 28px;
  border: 1px solid rgba(102, 126, 234, 0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.card-h {
  margin: 0 0 14px;
  font-size: 1.12rem;
  color: var(--c-purple);
}

.card-soft p { color: var(--c-text-soft); }

.chip-list { display: flex; flex-wrap: wrap; gap: 10px; margin: 12px 0 16px; }
.account-row { display: flex; flex-wrap: wrap; gap: 10px; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 7px 15px;
  border-radius: 50px;
  background: #eef1ff;
  color: #4c4fa8;
  font-size: 0.88rem;
  border: 1px solid #dfe4ff;
  white-space: normal;
}

.chip b { font-weight: 700; color: #4450b0; }

a.chip-link {
  text-decoration: none;
  transition: transform 0.25s ease, background 0.25s ease, color 0.25s ease;
}

a.chip-link:hover {
  background: var(--grad-primary);
  color: #fff;
  border-color: transparent;
  transform: translateY(-2px);
}

/* ---------- 关于我们 ---------- */
.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  gap: 34px;
  align-items: start;
}

.about-copy { display: flex; flex-direction: column; gap: 22px; }

.about-media { margin: 0; }

.photo-frame {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255, 255, 255, 0.9);
  background: #fff;
}

.photo-frame img { width: 100%; height: 100%; object-fit: cover; }
.photo-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  box-shadow: inset 0 0 0 1px rgba(102, 126, 234, 0.12);
  pointer-events: none;
}

.about-media figcaption,
.gallery figcaption {
  margin-top: 12px;
  text-align: center;
  font-size: 0.86rem;
  color: var(--c-muted);
}

/* ---------- 发展历程 ---------- */
.timeline {
  position: relative;
  max-width: 880px;
  margin: 0 auto;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 21px;
  top: 8px;
  bottom: 8px;
  width: 3px;
  border-radius: 3px;
  background: linear-gradient(180deg, #667eea, #f093fb, #4facfe);
  opacity: 0.35;
}

.timeline-item {
  position: relative;
  padding: 0 0 28px 66px;
}

.timeline-item:last-child { padding-bottom: 0; }

.timeline-dot {
  position: absolute;
  left: 11px;
  top: 24px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--grad-primary);
  border: 4px solid #fff;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.35);
}

.timeline-date {
  display: inline-block;
  margin-bottom: 10px;
  padding: 4px 14px;
  border-radius: 50px;
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.14), rgba(118, 75, 162, 0.14));
  color: #5545a8;
  font-weight: 700;
  font-size: 0.9rem;
}

.timeline-card p { margin: 0; color: var(--c-text-soft); }

/* ---------- 公益足迹 ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(255px, 1fr));
  gap: 22px;
}

.footprint-grid { margin-bottom: 48px; }

.feature-card {
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  background: #fff;
  border: 1px solid rgba(102, 126, 234, 0.08);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(102, 126, 234, 0.3);
}

.feature-icon {
  width: 56px;
  height: 56px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.7rem;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.12), rgba(240, 147, 251, 0.14));
}

.feature-card h3 {
  margin: 0 0 12px;
  font-size: 1.18rem;
  color: #3e3f9e;
}

.feature-card p { color: var(--c-text-soft); font-size: 0.96rem; }
.card-note {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed rgba(102, 126, 234, 0.25);
  font-size: 0.88rem;
  color: #7762ac;
}

.sub-block {
  background: #fff;
  border: 1px solid rgba(102, 126, 234, 0.1);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 46px;
}

.sub-block-title {
  margin: 0 0 22px;
  text-align: center;
  color: var(--c-indigo);
  font-size: 1.35rem;
}

.chip-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 14px;
}

.scene-chip {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #f6f7ff, #fbf2ff);
  border: 1px solid #e8e4ff;
}

.scene-chip b { color: #3e3f9e; font-size: 0.98rem; }
.scene-chip span { color: var(--c-text-soft); font-size: 0.86rem; line-height: 1.6; }

.gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.gallery figure {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow-sm);
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}

.gallery figure:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.gallery img {
  aspect-ratio: 4 / 3;
  width: 100%;
  object-fit: cover;
}

/* ---------- 课程服务 ---------- */
.course-grid { grid-template-columns: repeat(auto-fit, minmax(255px, 1fr)); }

.service-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 30px 26px 26px;
  box-shadow: 0 12px 32px rgba(38, 33, 90, 0.22);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 22px 46px rgba(38, 33, 90, 0.3);
}

.service-card h3 {
  margin: 6px 0 12px;
  font-size: 1.22rem;
  color: #383a8c;
}

.service-card p { color: var(--c-text-soft); font-size: 0.95rem; }

.service-link {
  display: inline-block;
  margin-top: auto;
  padding-top: 16px;
  color: var(--c-indigo);
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
}

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

.service-tag {
  align-self: flex-start;
  padding: 5px 13px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 700;
  color: #fff;
}

.tag-1 { background: linear-gradient(135deg, #4facfe, #00f2fe); }
.tag-2 { background: linear-gradient(135deg, #667eea, #764ba2); }
.tag-3 { background: linear-gradient(135deg, #fa709a, #fee140); }
.tag-4 { background: linear-gradient(135deg, #a18cd1, #fbc2eb); }

.dual-service {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  margin-top: 30px;
}

.dual-card {
  border-radius: var(--radius-lg);
  padding: 30px;
  background: #fff;
  box-shadow: 0 12px 32px rgba(38, 33, 90, 0.22);
}

.dual-card h3 {
  margin: 0 0 14px;
  font-size: 1.25rem;
  color: #383a8c;
}

.dual-card ul li {
  position: relative;
  display: grid;
  gap: 2px;
  padding: 13px 0 13px 30px;
  color: var(--c-text-soft);
}

.dual-card ul li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 21px;
  width: 14px;
  height: 14px;
  border-radius: 5px;
  background: linear-gradient(135deg, #667eea, #f093fb);
  opacity: 0.85;
}

.dual-card ul li + li { border-top: 1px dashed rgba(102, 126, 234, 0.18); }
.dual-card ul li b { color: #3e3f9e; font-size: 0.98rem; }
.dual-card ul li span { font-size: 0.92rem; line-height: 1.65; }

/* ---------- 核心优势 ---------- */
.advantage-grid { grid-template-columns: repeat(auto-fit, minmax(255px, 1fr)); }

.advantage-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  padding: 30px 26px;
  background: #fff;
  border: 1px solid rgba(102, 126, 234, 0.1);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.advantage-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 5px;
  background: var(--grad-primary);
  opacity: 0;
  transition: opacity 0.3s ease;
}

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

.advantage-card:hover::before { opacity: 1; }

.adv-num {
  position: absolute;
  top: 16px;
  right: 20px;
  font-size: 3rem;
  font-weight: 800;
  line-height: 1;
  color: rgba(102, 126, 234, 0.13);
}

.advantage-card h3 {
  margin: 8px 0 12px;
  font-size: 1.18rem;
  color: #3e3f9e;
  padding-right: 60px;
}

.advantage-card p { color: var(--c-text-soft); font-size: 0.96rem; }

/* ---------- 讲师成长 ---------- */
.path-list {
  display: flex;
  align-items: stretch;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 auto 48px;
  max-width: 980px;
}

.path-list li { display: flex; align-items: center; }

.path-step {
  display: inline-block;
  padding: 16px 26px;
  border-radius: 18px;
  background: var(--grad-primary);
  color: #fff;
  font-size: 1.18rem;
  font-weight: 800;
  box-shadow: 0 10px 24px rgba(102, 126, 234, 0.38);
}

.path-list em {
  display: block;
  margin-top: 8px;
  font-style: normal;
  text-align: center;
  font-size: 0.8rem;
  color: var(--c-text-soft);
}

.path-arrow {
  color: #a58fe0;
  font-size: 1.5rem;
  font-weight: 700;
  padding: 0 2px;
}

.growth-grid { grid-template-columns: repeat(auto-fit, minmax(255px, 1fr)); margin-bottom: 42px; }

.quote {
  max-width: 780px;
  margin: 0 auto;
  text-align: center;
  font-size: 1.22rem;
  font-weight: 600;
  color: #4c3fae;
  line-height: 2;
}

.eco-banner {
  display: flex;
  align-items: center;
  gap: 20px;
  max-width: 980px;
  margin: 0 auto 40px;
  padding: 28px 30px;
  border-radius: var(--radius-lg);
  background: #fff;
  border: 1px solid rgba(102, 126, 234, 0.1);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.eco-emoji {
  display: inline-flex;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  width: 62px;
  height: 62px;
  font-size: 1.9rem;
  border-radius: 18px;
  background: linear-gradient(135deg, #f1f2ff, #fbeaff);
}

.eco-banner h3 {
  margin: 0 0 8px;
  color: #4c3fae;
  font-size: 1.2rem;
}

.eco-banner p { margin: 0; color: var(--c-text-soft); font-size: 0.96rem; }

/* ---------- 合作邀请 ---------- */
.coop-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 26px;
  margin-bottom: 46px;
  align-items: stretch;
}

.coop-card {
  border-radius: var(--radius-lg);
  padding: 34px 30px;
  background: #fff;
  border: 1px solid rgba(102, 126, 234, 0.1);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.coop-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }

.coop-emoji {
  display: inline-flex;
  width: 58px;
  height: 58px;
  align-items: center;
  justify-content: center;
  border-radius: 17px;
  font-size: 1.7rem;
  background: linear-gradient(135deg, #f1f2ff, #fbeaff);
  margin-bottom: 16px;
}

.coop-card h3 { margin: 0 0 18px; color: #3e3f9e; font-size: 1.25rem; }

.coop-card ul li {
  position: relative;
  padding: 10px 0 10px 26px;
  color: var(--c-text-soft);
  font-size: 0.97rem;
}

.coop-card ul li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 10px;
  color: #6a5bd6;
  font-weight: 800;
}

.coop-card ul li + li { border-top: 1px dashed rgba(102, 126, 234, 0.2); }
.coop-card ul li strong { color: #3e3f9e; }

.coop-type {
  padding: 16px 18px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #f6f7ff, #fbf2ff);
  border: 1px solid #e8e4ff;
}

.coop-type + .coop-type { margin-top: 14px; }
.coop-type b { color: #3e3f9e; }
.coop-type p { margin: 6px 0 0; color: var(--c-text-soft); font-size: 0.93rem; }

/* 课程介绍区块底部的报名入口 */
.section-cta {
  margin-top: 34px;
  text-align: center;
}

.section-cta .btn {
  min-width: 260px;
  padding: 16px 36px;
  font-size: 1.08rem;
}

/* ---------- CTA ---------- */
.cta-banner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 30px;
  align-items: center;
  border-radius: 28px;
  padding: 44px 46px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #fff;
  box-shadow: 0 24px 60px rgba(102, 126, 234, 0.36);
  overflow: hidden;
  position: relative;
}

.cta-banner::before {
  content: "";
  position: absolute;
  right: -70px;
  top: -70px;
  width: 230px;
  height: 230px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
}

.cta-copy { position: relative; z-index: 1; }
.cta-copy h3 { margin: 0 0 12px; font-size: 1.8rem; }
.cta-copy p { color: rgba(255, 255, 255, 0.94); }

.cta-banner .chip {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(255, 255, 255, 0.4);
  color: #fff;
}

.cta-banner .chip b { color: #fff; }

.qr-card {
  position: relative;
  z-index: 1;
  margin: 0;
  padding: 16px;
  border-radius: var(--radius-lg);
  background: #fff;
  text-align: center;
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.22);
  min-width: 236px;
  max-width: 280px;
}

.qr-card img { width: 100%; border-radius: 10px; }
.qr-card figcaption { margin-top: 10px; font-size: 0.9rem; color: #3e3f9e; font-weight: 600; line-height: 1.5; }
.qr-card small { display: block; font-size: 0.76rem; font-weight: 400; color: var(--c-muted); }

.wechat-card {
  position: relative;
  z-index: 1;
  margin: 0;
  padding: 22px 24px;
  border-radius: var(--radius-lg);
  background: #fff;
  text-align: center;
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.22);
  min-width: 236px;
  max-width: 280px;
}

.wechat-label {
  margin: 0 0 4px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--c-muted);
}

.wechat-id {
  margin: 0 0 12px;
  font-size: 1.55rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: #3e3f9e;
  user-select: all;
}

.wechat-copy {
  display: inline-block;
  padding: 9px 22px;
  border: none;
  border-radius: 50px;
  background: linear-gradient(135deg, #667eea, #764ba2);
  color: #fff;
  font-weight: 700;
  font-size: 0.92rem;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.wechat-copy:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(102, 126, 234, 0.4);
}

.wechat-tip {
  margin: 12px 0 0;
  font-size: 0.78rem;
  color: var(--c-muted);
}

/* ---------- 未来展望 ---------- */
.future-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
  margin-bottom: 52px;
}

.future-item {
  border-radius: var(--radius-lg);
  padding: 26px 22px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.22);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: #fff;
  transition: transform 0.3s ease, background 0.3s ease;
}

.future-item:hover {
  transform: translateY(-5px);
  background: rgba(255, 255, 255, 0.17);
}

.future-ico { font-size: 1.9rem; display: block; margin-bottom: 12px; }
.future-item h3 { margin: 0 0 10px; font-size: 1.12rem; }
.future-item p { margin: 0; color: rgba(255, 255, 255, 0.82); font-size: 0.92rem; }

.slogan {
  text-align: center;
  color: #fff;
  font-size: clamp(1.4rem, 3vw, 2.2rem);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
  margin: 0;
}

/* ---------- 页脚 ---------- */
.site-footer {
  background: linear-gradient(135deg, #5250c0, #4a2f83);
  color: rgba(255, 255, 255, 0.92);
  padding: 58px 0 32px;
}

.footer-inner { text-align: center; }

.footer-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 22px;
}

.footer-brand .brand-text { text-align: left; }
.footer-brand .brand-mark {
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.28);
}

.footer-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px 26px;
  margin-bottom: 20px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.86);
  text-decoration: none;
  font-size: 0.93rem;
  transition: color 0.25s ease, transform 0.25s ease;
}

.footer-links a:hover { color: #fff; transform: translateY(-2px); }

.footer-contact {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.9rem;
  margin-bottom: 22px;
}

.footer-contact i {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.45);
}

.footer-copy {
  margin: 0;
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  font-size: 0.84rem;
  color: rgba(255, 255, 255, 0.66);
}

/* ---------- 回到顶部 ---------- */
.to-top {
  position: fixed;
  right: 22px;
  bottom: 24px;
  z-index: 90;
  width: 46px;
  height: 46px;
  border: none;
  border-radius: 50%;
  background: var(--grad-primary);
  color: #fff;
  font-size: 1.2rem;
  cursor: pointer;
  box-shadow: 0 8px 22px rgba(102, 126, 234, 0.45);
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease;
}

.to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.to-top:hover { transform: translateY(-3px); }

#cursorTrail {
  position: fixed;
  inset: 0;
  z-index: 9998;
  pointer-events: none;
}

@media (prefers-reduced-motion: reduce) {
  #cursorTrail { display: none; }
}

/* ---------- 滚动显现 ---------- */
.js .reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero { animation: none; }
  .orb { animation: none; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
  .btn, .card-soft, .feature-card, .service-card, .advantage-card,
  .future-item, .gallery figure { transition: none; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .main-nav {
    position: fixed;
    top: 64px;
    left: 14px;
    right: 14px;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 14px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.97);
    box-shadow: 0 18px 45px rgba(44, 62, 80, 0.2);
    border: 1px solid rgba(102, 126, 234, 0.12);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s ease;
    margin: 0;
  }

  .main-nav.open {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .main-nav a { color: var(--c-text); padding: 12px 16px; font-size: 1rem; }
  .site-header.scrolled .main-nav a { color: var(--c-text); }
  .main-nav a:hover, .main-nav a.active { background: rgba(102, 126, 234, 0.12); color: var(--c-indigo); }
  .nav-toggle { display: inline-flex; }
}

@media (max-width: 960px) {
  .section { padding: 72px 0; }
  .about-grid { grid-template-columns: 1fr; }
  .about-media { max-width: 640px; margin: 0 auto; width: 100%; }
  .coop-grid { grid-template-columns: 1fr; }
  .dual-service { grid-template-columns: 1fr; }
  .cta-banner { grid-template-columns: 1fr; padding: 36px 28px; text-align: center; }
  .cta-banner .account-row, .cta-banner .chip-list { justify-content: center; }
  .qr-card,
  .wechat-card { margin: 0 auto; }
  .gallery { grid-template-columns: 1fr; gap: 26px; max-width: 620px; margin: 0 auto; }
  .gallery img { aspect-ratio: 16 / 10; }
}

@media (max-width: 720px) {
  .hero { padding: 130px 0 70px; min-height: auto; }
  .hero-badge { font-size: 0.8rem; padding: 7px 14px; }
  .hero-lead { margin-bottom: 30px; }
  .hero-actions .btn { width: 100%; max-width: 340px; }
  .hero-stats { gap: 10px; }
  .stat { flex: 1 1 calc(50% - 12px); min-width: 0; padding: 14px 8px 12px; }
  .stat-num { font-size: 1.65rem; }
  .section-head { margin-bottom: 40px; }
  .section-title { margin-bottom: 24px; }
  .section-subtitle { font-size: 0.98rem; }
  .brand-text small { display: none; }
  .header-cta { display: none; }
  .header-admin { display: none; }
  .card-soft { padding: 22px 18px; }
  .timeline-item { padding-left: 56px; }
  .sub-block { padding: 24px 18px; }
  .coop-card { padding: 26px 20px; }
  .cta-banner { border-radius: 22px; }
  .path-list { gap: 6px; }
  .path-step { padding: 12px 16px; font-size: 1rem; }
  .path-arrow { font-size: 1.1rem; }
  .eco-banner { flex-direction: column; text-align: center; padding: 24px 18px; }
  .dual-card { padding: 24px 20px; }
  .to-top { right: 14px; bottom: 16px; }
  .header-inner { gap: 10px; }
  .brand-mark { width: 38px; height: 38px; font-size: 1.25rem; border-radius: 11px; }
}