/* ============ 基础变量 ============ */
:root {
  --bg: #0b0d17;
  --bg-2: #10131f;
  --card: #161a2b;
  --card-2: #1c2138;
  --line: rgba(255, 255, 255, 0.08);
  --text: #f2f4fb;
  --muted: #9aa3bd;
  --primary: #6c5ce7;
  --primary-2: #8f7bff;
  --accent: #ffb43a;
  --accent-2: #ff7a59;
  --success: #2fd4a7;
  --radius: 18px;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-tap-highlight-color: transparent; /* 移动端/微信内点按无蓝色高亮 */
  -webkit-text-size-adjust: 100%;           /* 防止微信内横屏自动放大字号 */
  text-size-adjust: 100%;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.container { width: min(1180px, 92%); margin: 0 auto; }
.section { padding: 96px 0; }

/* 锤点定位时避开固定导航遮挡（含微信内置浏览器） */
section[id] { scroll-margin-top: 76px; }

/* ============ 通用组件 ============ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  border: none; cursor: pointer; border-radius: 999px;
  font-weight: 600; font-size: 15px; transition: transform .25s, box-shadow .25s, background .25s;
  white-space: nowrap;
}
.btn-lg { padding: 15px 34px; font-size: 17px; }
.btn-sm { padding: 9px 20px; font-size: 14px; }
.btn-block { width: 100%; padding: 14px 0; }
.btn-primary {
  background: linear-gradient(120deg, var(--primary), var(--primary-2));
  color: #fff; box-shadow: 0 10px 26px rgba(108, 92, 231, 0.4);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 32px rgba(108, 92, 231, 0.55); }
.btn-ghost {
  background: rgba(255, 255, 255, 0.06); color: var(--text);
  border: 1px solid var(--line);
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.12); transform: translateY(-2px); }
.btn-light { background: #fff; color: #1c1040; box-shadow: 0 10px 26px rgba(0,0,0,.25); }
.btn-light:hover { transform: translateY(-2px); }

.section-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.section-tag {
  display: inline-block; padding: 6px 16px; border-radius: 999px;
  font-size: 13px; font-weight: 600; letter-spacing: 1px;
  color: var(--accent); background: rgba(255, 180, 58, 0.1);
  border: 1px solid rgba(255, 180, 58, 0.25); margin-bottom: 18px;
}
.section-head h2 { font-size: 32px; font-size: clamp(26px, 4vw, 38px); line-height: 1.3; margin-bottom: 12px; }
.section-head p { color: var(--muted); font-size: 16px; }

.gradient-text {
  background: linear-gradient(110deg, var(--accent), var(--accent-2) 45%, var(--primary-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* 滚动进场动画 */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: none; }

/* ============ 顶部导航 ============ */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 16px 0; transition: background .3s, box-shadow .3s, padding .3s;
}
.site-header.scrolled {
  background: rgba(11, 13, 23, 0.86); backdrop-filter: blur(14px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35); padding: 10px 0;
}
.nav-inner { display: flex; align-items: center; gap: 32px; }
.logo { display: flex; align-items: center; gap: 10px; }
.logo-mark {
  width: 40px; height: 40px; border-radius: 12px; flex: none;
  display: grid; place-items: center; font-weight: 800; font-size: 20px; color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--accent-2));
}
.logo-text { font-weight: 800; font-size: 18px; line-height: 1.2; display: flex; flex-direction: column; }
.logo-text em { font-style: normal; font-size: 11px; color: var(--muted); font-weight: 400; letter-spacing: 1px; }
.logo-img {
  height: 42px; width: auto; display: block; border-radius: 10px;
  transition: transform .25s;
}
.logo:hover .logo-img { transform: scale(1.05); }
.footer-brand .logo-img { height: 52px; }
.main-nav { display: flex; gap: 30px; margin-left: auto; }
.nav-link { font-size: 15px; color: var(--muted); transition: color .2s; position: relative; }
.nav-link:hover, .nav-link.active { color: var(--text); }
.nav-link.active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -8px; height: 2px;
  background: linear-gradient(90deg, var(--primary-2), var(--accent)); border-radius: 2px;
}
.nav-actions { display: flex; align-items: center; gap: 14px; }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 6px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--text); margin: 5px 0; border-radius: 2px; }

/* ============ Hero ============ */
.hero { position: relative; padding: 170px 0 0; text-align: center; overflow: hidden; }
.hero-bg {
  position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(600px 400px at 15% 10%, rgba(108, 92, 231, 0.28), transparent 65%),
    radial-gradient(700px 420px at 85% 15%, rgba(255, 122, 89, 0.18), transparent 65%),
    radial-gradient(500px 380px at 50% 90%, rgba(47, 212, 167, 0.10), transparent 70%);
}
.hero-inner { position: relative; z-index: 1; }
.hero-badge {
  display: inline-block; padding: 8px 20px; border-radius: 999px; font-size: 14px;
  background: rgba(255, 255, 255, 0.06); border: 1px solid var(--line); margin-bottom: 26px;
}
.hero h1 { font-size: 42px; font-size: clamp(32px, 5.6vw, 58px); line-height: 1.25; font-weight: 800; letter-spacing: 1px; }
.hero-sub { margin: 26px auto 36px; max-width: 780px; color: var(--muted); font-size: 16px; font-size: clamp(15px, 2vw, 17px); }
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.hero-points {
  display: flex; justify-content: center; gap: 28px; flex-wrap: wrap;
  margin-top: 38px; color: var(--muted); font-size: 14px;
}
.hero-points li { display: flex; align-items: center; gap: 8px; }
.hero-points .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}

.hero-strip {
  margin-top: 72px; padding: 16px 0; overflow: hidden; white-space: nowrap;
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
}
.strip-track {
  display: inline-flex; gap: 34px; font-size: 15px; font-weight: 600;
  color: rgba(255, 255, 255, 0.55); animation: marquee 26s linear infinite; width: max-content;
}
.strip-track .star { color: var(--accent); }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ============ 数据统计 ============ */
.stats { padding: 64px 0; background: var(--bg-2); border-bottom: 1px solid var(--line); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
.stat-num {
  font-size: 34px; font-size: clamp(30px, 4vw, 44px); font-weight: 800;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.stat-label { color: var(--muted); font-size: 14px; margin-top: 6px; }

/* ============ 痛点 ============ */
.pain { background: var(--bg); }
.pain-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.pain-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 24px; transition: transform .3s, border-color .3s;
}
.pain-card:hover { transform: translateY(-6px); border-color: rgba(255, 122, 89, 0.4); }
.pain-icon { font-size: 32px; margin-bottom: 14px; }
.pain-card h3 { font-size: 18px; margin-bottom: 10px; }
.pain-card p { color: var(--muted); font-size: 14px; }
.pain-answer {
  margin-top: 46px; text-align: center; font-size: 18px; font-size: clamp(16px, 2.4vw, 21px);
  padding: 30px; border-radius: var(--radius);
  background: linear-gradient(120deg, rgba(108, 92, 231, 0.14), rgba(255, 122, 89, 0.12));
  border: 1px solid var(--line);
}
.pain-answer strong { color: var(--accent); }

/* ============ 课程卡片 ============ */
.courses { background: var(--bg-2); }
.course-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.course-card {
  position: relative; background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 30px 26px;
  display: flex; flex-direction: column; transition: transform .3s, box-shadow .3s, border-color .3s;
  overflow: hidden;
}
.course-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: var(--card-accent, linear-gradient(90deg, var(--primary), var(--primary-2)));
}
.course-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); border-color: rgba(255, 255, 255, 0.16); }
.course-card[data-accent="c1"] { --card-accent: linear-gradient(90deg, #6c5ce7, #8f7bff); }
.course-card[data-accent="c2"] { --card-accent: linear-gradient(90deg, #00b4d8, #48cae4); }
.course-card[data-accent="c3"] { --card-accent: linear-gradient(90deg, #ff7a59, #ffb43a); }
.course-card[data-accent="c4"] { --card-accent: linear-gradient(90deg, #ff4d6d, #ff8fa3); }
.course-card[data-accent="c5"] { --card-accent: linear-gradient(90deg, #2fd4a7, #7efad0); }
.course-card[data-accent="c6"] { --card-accent: linear-gradient(90deg, #ffb43a, #ff7a59); }
.course-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.course-icon {
  width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center;
  font-size: 26px; background: rgba(255, 255, 255, 0.06); border: 1px solid var(--line);
}
.course-tag {
  font-size: 12px; padding: 4px 12px; border-radius: 999px; color: var(--muted);
  background: rgba(255, 255, 255, 0.05); border: 1px solid var(--line);
}
.course-card h3 { font-size: 21px; margin-bottom: 10px; }
.course-desc { color: var(--muted); font-size: 14px; margin-bottom: 18px; }
.course-list { flex: 1; display: grid; gap: 9px; margin-bottom: 22px; }
.course-list li { font-size: 14px; color: #cdd3e6; padding-left: 20px; position: relative; }
.course-list li::before {
  content: "✓"; position: absolute; left: 0; color: var(--success); font-weight: 700;
}
.course-foot { display: flex; align-items: center; justify-content: space-between; border-top: 1px dashed var(--line); padding-top: 18px; }
.course-price { font-size: 20px; font-weight: 800; color: var(--accent); }
.course-price em { font-style: normal; font-size: 12px; color: var(--muted); font-weight: 400; }
.course-link { font-size: 14px; color: var(--primary-2); font-weight: 600; transition: gap .2s; }
.course-link:hover { text-decoration: underline; }

/* ============ 变现路径 ============ */
.path { background: var(--bg); }
.path-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.path-card {
  position: relative; background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 30px 24px 34px;
  transition: transform .3s, border-color .3s;
}
.path-card:hover { transform: translateY(-6px); border-color: rgba(255, 180, 58, 0.45); }
.path-step {
  font-size: 12px; font-weight: 800; letter-spacing: 2px; color: var(--accent); margin-bottom: 12px;
}
.path-card h3 { font-size: 20px; margin-bottom: 10px; }
.path-card p { color: var(--muted); font-size: 14px; }
.path-arrow {
  position: absolute; right: -19px; top: 50%; transform: translateY(-50%);
  font-size: 20px; color: var(--accent); z-index: 2;
}
.path-card:last-child .path-arrow { display: none; }
.path-channels {
  margin-top: 46px; text-align: center; padding: 30px; border-radius: var(--radius);
  background: var(--card); border: 1px solid var(--line);
}
.path-channels h4 { font-size: 16px; color: var(--muted); margin-bottom: 18px; font-weight: 500; }
.channel-tags { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.channel-tags span {
  padding: 8px 18px; border-radius: 999px; font-size: 14px;
  background: rgba(255, 255, 255, 0.05); border: 1px solid var(--line); color: #dfe3f0;
  transition: border-color .2s, background .2s;
}
.channel-tags span:hover { border-color: var(--accent); background: rgba(255, 180, 58, 0.08); }

/* ============ 学员成果 ============ */
.cases { background: var(--bg-2); }
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.case-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 26px; display: flex; flex-direction: column; gap: 16px;
  transition: transform .3s, border-color .3s;
}
.case-card:hover { transform: translateY(-6px); border-color: rgba(143, 123, 255, 0.45); }
.case-avatar {
  width: 46px; height: 46px; border-radius: 50%; display: grid; place-items: center;
  font-weight: 700; font-size: 15px; color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--accent-2));
}
.case-card blockquote { color: #cdd3e6; font-size: 14.5px; flex: 1; }
.case-meta { display: flex; align-items: center; justify-content: space-between; font-size: 13px; gap: 8px; flex-wrap: wrap; }
.case-meta strong { color: var(--text); font-size: 13px; }
.case-meta span {
  color: var(--success); background: rgba(47, 212, 167, 0.1);
  padding: 3px 12px; border-radius: 999px; border: 1px solid rgba(47, 212, 167, 0.3);
}

/* ============ 定价 ============ */
.pricing { background: var(--bg); }
.price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; align-items: stretch; }
.price-card {
  position: relative; background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 36px 30px; display: flex; flex-direction: column;
  transition: transform .3s, border-color .3s;
}
.price-card:hover { transform: translateY(-6px); }
.price-card.hot {
  background: linear-gradient(160deg, rgba(108, 92, 231, 0.18), rgba(255, 122, 89, 0.10)), var(--card);
  border: 1px solid rgba(143, 123, 255, 0.55); box-shadow: 0 24px 60px rgba(108, 92, 231, 0.25);
  transform: scale(1.03);
}
.price-card.hot:hover { transform: scale(1.03) translateY(-6px); }
.price-flag {
  position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  color: #241a05; font-size: 13px; font-weight: 800; padding: 5px 18px; border-radius: 999px;
}
.price-name { font-size: 22px; font-weight: 800; }
.price-sub { color: var(--muted); font-size: 14px; margin: 6px 0 18px; }
.price-num { font-size: 38px; font-weight: 800; margin-bottom: 22px; }
.price-num em { font-style: normal; font-size: 14px; color: var(--muted); font-weight: 400; }
.price-list { flex: 1; display: grid; gap: 11px; margin-bottom: 26px; }
.price-list li { font-size: 14.5px; color: #dfe3f0; padding-left: 24px; position: relative; }
.price-list li::before { content: "✓"; position: absolute; left: 0; color: var(--success); font-weight: 700; }
.price-list li.off { color: #5b627a; text-decoration: line-through; }
.price-list li.off::before { content: "×"; color: #5b627a; }
.price-note { margin-top: 12px; text-align: center; font-size: 12.5px; color: var(--muted); }
.pricing-guarantee { text-align: center; margin-top: 42px; color: var(--muted); font-size: 14px; }

/* ---- 支付入口条 ---- */
.pay-bar {
  display: flex; align-items: center; justify-content: center; gap: 16px; flex-wrap: wrap;
  margin-top: 36px; padding: 22px 26px; border-radius: var(--radius);
  border: 1px dashed rgba(255, 255, 255, 0.16); background: rgba(255, 255, 255, 0.02);
}
.pay-bar-label { color: var(--muted); font-size: 14px; }
.pay-bar-methods { display: flex; gap: 12px; flex-wrap: wrap; }
.pay-method-btn {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 10px 22px; border-radius: 999px; font-size: 14px; font-weight: 600;
  cursor: pointer; color: var(--text); background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--line); transition: transform .2s, border-color .2s, background .2s;
  font-family: inherit;
}
.pay-method-btn:hover { transform: translateY(-2px); background: rgba(255, 255, 255, 0.1); }
.pay-method-btn .dot-icon { width: 10px; height: 10px; border-radius: 50%; }
.pay-method-btn.wechat .dot-icon { background: #2aae67; }
.pay-method-btn.wechat:hover { border-color: rgba(42, 174, 103, 0.6); }
.pay-method-btn.alipay .dot-icon { background: #1677ff; }
.pay-method-btn.alipay:hover { border-color: rgba(22, 119, 255, 0.6); }

/* ---- 支付弹窗 ---- */
.modal-pay { text-align: center; }
.pay-tabs { display: flex; gap: 10px; justify-content: center; margin: 4px 0 22px; }
.pay-tab {
  padding: 9px 24px; border-radius: 999px; font-size: 14px; font-weight: 600;
  cursor: pointer; color: var(--muted); background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line); transition: all .2s; font-family: inherit;
}
.pay-tab.active { color: #fff; border-color: transparent; }
.pay-tab.active.wechat { background: #2aae67; }
.pay-tab.active.alipay { background: #1677ff; }
.pay-qr-wrap { display: grid; place-items: center; gap: 12px; }
.pay-qr-wrap img { width: 220px; height: 220px; border-radius: 14px; background: #fff; }
.pay-note { color: var(--muted); font-size: 13px; }
.pay-tip { margin-top: 20px; font-size: 13px; color: var(--muted); line-height: 1.7; }
.pay-tip strong { color: var(--accent); }

/* ============ FAQ ============ */
.faq { background: var(--bg-2); }
.faq-wrap { max-width: 820px; }
.faq-list { display: grid; gap: 14px; }
.faq-item {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  overflow: hidden; transition: border-color .25s;
}
.faq-item[open] { border-color: rgba(255, 180, 58, 0.4); }
.faq-item summary {
  list-style: none; cursor: pointer; padding: 20px 24px; font-weight: 600; font-size: 16px;
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-icon { position: relative; width: 14px; height: 14px; flex: none; }
.faq-icon::before, .faq-icon::after {
  content: ""; position: absolute; background: var(--accent); border-radius: 2px;
  transition: transform .25s;
}
.faq-icon::before { width: 14px; height: 2px; top: 6px; left: 0; }
.faq-icon::after { width: 2px; height: 14px; top: 0; left: 6px; }
.faq-item[open] .faq-icon::after { transform: rotate(90deg); }
.faq-body { padding: 0 24px 22px; color: var(--muted); font-size: 15px; }

/* ============ 底部 CTA ============ */
.cta { background: var(--bg); padding: 110px 0; }
.cta-inner {
  text-align: center; border-radius: 26px; padding: 72px 40px; position: relative; overflow: hidden;
  background: linear-gradient(135deg, #3b2d8f, #6c5ce7 45%, #ff7a59);
}
.cta-inner::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(500px 300px at 80% 0%, rgba(255, 255, 255, 0.18), transparent 70%);
}
.cta-inner > * { position: relative; }
.cta h2 { font-size: 32px; font-size: clamp(26px, 4vw, 40px); line-height: 1.35; margin-bottom: 16px; }
.cta p { color: rgba(255, 255, 255, 0.85); margin-bottom: 30px; }
.cta-links { margin-top: 26px; display: flex; gap: 28px; justify-content: center; flex-wrap: wrap; font-size: 14px; color: rgba(255, 255, 255, 0.8); }

/* ============ 页脚 ============ */
.site-footer { background: #070810; border-top: 1px solid var(--line); padding-top: 64px; padding-bottom: env(safe-area-inset-bottom); /* iPhone 底部安全区 */ }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 48px; }
.footer-brand p { color: var(--muted); font-size: 14px; margin-top: 16px; max-width: 320px; }
.footer-col { display: flex; flex-direction: column; gap: 12px; }
.footer-col h4 { font-size: 15px; margin-bottom: 6px; }
.footer-col a { color: var(--muted); font-size: 14px; transition: color .2s; }
.footer-col a:hover { color: var(--text); }
.footer-bottom { border-top: 1px solid var(--line); padding: 20px 0; }
.footer-bottom p { text-align: center; color: #5b627a; font-size: 13px; }
.footer-note {
  max-width: 760px; margin: 10px auto 0; font-size: 12px !important;
  color: #454b63 !important; line-height: 1.7;
}
.footer-bottom p + p { margin-top: 8px; }
.footer-sep { margin: 0 6px; color: #3a3f54; }
.footer-link { color: #7d86a3; transition: color .2s; }
.footer-link:hover { color: var(--text); }
.beian-row a { letter-spacing: .5px; }

/* ============ 弹窗 ============ */
.modal-mask {
  position: fixed; inset: 0; z-index: 200; display: grid; place-items: center;
  background: rgba(5, 6, 12, 0.72); backdrop-filter: blur(6px);
  opacity: 0; pointer-events: none; transition: opacity .3s; padding: 20px;
}
.modal-mask.show { opacity: 1; pointer-events: auto; }
.modal {
  width: min(460px, 100%); background: var(--card-2); border: 1px solid var(--line);
  border-radius: 20px; padding: 36px 32px; position: relative;
  max-height: 92vh; max-height: 92dvh; overflow-y: auto; /* 小屏手机弹窗内容可滚动 */
  transform: translateY(24px) scale(.97); transition: transform .3s;
}
.modal-mask.show .modal { transform: none; }
.modal-close {
  position: absolute; top: 14px; right: 16px; background: none; border: none;
  color: var(--muted); font-size: 26px; cursor: pointer; line-height: 1;
}
.modal-close:hover { color: var(--text); }
.modal h3 { font-size: 21px; margin-bottom: 8px; }
.modal-sub { color: var(--muted); font-size: 14px; margin-bottom: 22px; }
.modal-form { display: grid; gap: 16px; }
.modal-form label { display: grid; gap: 8px; font-size: 14px; color: #cdd3e6; }
.modal-form input, .modal-form select {
  background: rgba(255, 255, 255, 0.05); border: 1px solid var(--line);
  border-radius: 10px; padding: 12px 14px; color: var(--text); font-size: 15px; outline: none;
  transition: border-color .2s; font-family: inherit;
}
.modal-form input:focus, .modal-form select:focus { border-color: var(--primary-2); }
.modal-form label.consent {
  display: flex; flex-direction: row; align-items: flex-start; gap: 9px;
  font-size: 13px; color: var(--muted); line-height: 1.55;
}
.modal-form .consent input[type="checkbox"] {
  width: 16px; height: 16px; margin-top: 3px; flex: none;
  accent-color: var(--primary);
}
.modal-form .consent a { color: var(--primary-2); }
.modal-form .consent a:hover { text-decoration: underline; }
.form-tip { font-size: 12px; color: #5b627a; text-align: center; }
.modal-success { text-align: center; padding: 14px 0 4px; }
.success-icon { font-size: 44px; margin-bottom: 12px; }
.modal-success h3 { margin-bottom: 8px; }
.modal-success p { color: var(--muted); font-size: 14px; margin-bottom: 22px; }

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
  .course-grid, .case-grid { grid-template-columns: repeat(2, 1fr); }
  .pain-grid, .path-grid, .price-grid { grid-template-columns: repeat(2, 1fr); }
  .path-arrow { display: none; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 34px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px) {
  .section { padding: 68px 0; }
  .hero { padding-top: 130px; }
  .main-nav {
    position: fixed; inset: 0 0 auto 0; top: 0; flex-direction: column; gap: 0;
    background: rgba(11, 13, 23, 0.97); backdrop-filter: blur(14px);
    padding: 90px 8% 30px; transform: translateY(-110%); transition: transform .35s;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
  }
  .main-nav.open { transform: none; }
  .nav-link { padding: 14px 0; font-size: 17px; border-bottom: 1px solid var(--line); }
  .nav-toggle { display: block; }
  .logo-img { height: 36px; }
  .course-grid, .case-grid, .pain-grid, .path-grid, .price-grid { grid-template-columns: 1fr; }
  .price-card.hot { transform: none; }
  .price-card.hot:hover { transform: translateY(-6px); }
  .hero-points { gap: 16px; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .cta-inner { padding: 54px 22px; }
}