/* ===== 创归思官网 · 设计系统 ===== */
:root{
  --purple:#6D5EFC;
  --cyan:#28C2C8;
  --grad:linear-gradient(120deg,#6D5EFC 0%,#28C2C8 100%);
  --grad-soft:linear-gradient(120deg,rgba(109,94,252,.12),rgba(40,194,200,.12));
  --ink:#1c1b2e;
  --ink-2:#4a4863;
  --ink-3:#76748c;
  --bg:#f7f7fc;
  --bg-2:#ffffff;
  --line:rgba(28,27,46,.08);
  --glass:rgba(255,255,255,.66);
  --glass-strong:rgba(255,255,255,.82);
  --shadow:0 18px 50px -20px rgba(60,52,140,.28);
  --shadow-sm:0 8px 24px -12px rgba(60,52,140,.24);
  --radius:26px;
  --radius-sm:16px;
  --radius-lg:34px;
  --maxw:1180px;
  --font:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  color:var(--ink);
  background:var(--bg);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.grad{
  background:var(--grad);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* ===== 背景光斑 ===== */
.aurora{position:fixed;inset:0;z-index:-1;overflow:hidden;pointer-events:none}
.blob{position:absolute;border-radius:50%;filter:blur(70px);opacity:.5}
.blob-a{width:520px;height:520px;background:radial-gradient(circle,#6D5EFC,transparent 70%);top:-160px;left:-120px}
.blob-b{width:480px;height:480px;background:radial-gradient(circle,#28C2C8,transparent 70%);top:30%;right:-160px}
.blob-c{width:420px;height:420px;background:radial-gradient(circle,#9b8cff,transparent 70%);bottom:-140px;left:30%}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:999px;border:1px solid transparent;
  font-weight:600;font-size:15px;cursor:pointer;transition:.25s ease;
  font-family:inherit;white-space:nowrap;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 26px -10px rgba(109,94,252,.7)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 34px -12px rgba(109,94,252,.8)}
.btn-ghost{background:var(--glass);color:var(--ink);border-color:var(--line);backdrop-filter:blur(10px)}
.btn-ghost:hover{border-color:var(--purple);color:var(--purple);transform:translateY(-2px)}
.btn-lg{padding:15px 30px;font-size:16px}
.btn-block{width:100%}

/* ===== 玻璃卡 ===== */
.glass{
  background:var(--glass);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border:1px solid rgba(255,255,255,.6);
  box-shadow:var(--shadow);
  border-radius:var(--radius);
}

/* ===== 导航 ===== */
.nav{position:sticky;top:0;z-index:50;transition:.3s ease;backdrop-filter:blur(8px)}
.nav.scrolled{background:rgba(247,247,252,.82);backdrop-filter:blur(18px);box-shadow:0 6px 24px -18px rgba(60,52,140,.5)}
.nav-inner{max-width:var(--maxw);margin:0 auto;padding:14px 24px;display:flex;align-items:center;gap:18px}
.brand{display:flex;align-items:center;gap:12px}
.brand-mascot{width:42px;height:42px;object-fit:contain;filter:drop-shadow(0 6px 12px rgba(109,94,252,.35))}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:19px;letter-spacing:.5px}
.brand-text em{font-style:normal;font-size:11px;color:var(--ink-3)}
.nav-links{display:flex;gap:6px;margin-left:auto}
.nav-links a{padding:8px 14px;border-radius:999px;font-size:14.5px;color:var(--ink-2);transition:.2s}
.nav-links a:hover{color:var(--purple);background:var(--grad-soft)}
.nav-cta{display:flex;gap:10px;margin-left:14px}
.nav-burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav-burger span{width:24px;height:2.5px;background:var(--ink);border-radius:2px;transition:.3s}

/* ===== Hero ===== */
.hero{position:relative;padding:70px 24px 90px}
.hero-inner{max-width:var(--maxw);margin:0 auto;display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.pill{display:inline-block;padding:7px 16px;border-radius:999px;background:var(--grad-soft);border:1px solid rgba(109,94,252,.18);color:var(--purple);font-size:13px;font-weight:600;margin-bottom:22px}
.hero h1{font-size:clamp(34px,5vw,56px);line-height:1.12;letter-spacing:-.5px;font-weight:800}
.lede{margin:22px 0 30px;font-size:17px;color:var(--ink-2);max-width:540px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-stats{list-style:none;display:flex;gap:30px;margin-top:40px;flex-wrap:wrap}
.hero-stats li{display:flex;flex-direction:column}
.hero-stats strong{font-size:30px;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;font-weight:800}
.hero-stats span{font-size:13px;color:var(--ink-3)}

.hero-art{position:relative;display:flex;justify-content:center}
.hero-glow{position:absolute;left:-12%;top:-8%;width:124%;height:120%;background:radial-gradient(58% 58% at 50% 40%,rgba(109,94,252,.40),rgba(40,194,200,.20) 52%,transparent 72%);filter:blur(40px);z-index:0;animation:pulse 6s ease-in-out infinite}
.hero-device{position:relative;z-index:1;width:390px;max-width:100%;padding:18px;border-radius:26px;text-align:left;box-shadow:0 34px 80px -30px rgba(60,52,140,.55)}
.device-top{display:flex;align-items:center;gap:12px;padding:4px 4px 14px;border-bottom:1px solid var(--line);margin-bottom:14px}
.device-mascot{width:46px;height:46px;border-radius:14px;background:var(--grad-soft);padding:4px;box-shadow:var(--shadow-sm)}
.device-id{display:flex;flex-direction:column;line-height:1.25;flex:1;min-width:0}
.device-id strong{font-size:15px}
.device-id span{font-size:11.5px;color:var(--ink-3);display:flex;align-items:center;gap:5px}
.dot-online{width:7px;height:7px;border-radius:50%;background:#27c08a;box-shadow:0 0 0 3px rgba(39,192,138,.18);flex:none}
.device-badge{font-size:11px;font-weight:700;color:var(--purple);background:var(--grad-soft);border:1px solid rgba(109,94,252,.2);padding:4px 10px;border-radius:999px;white-space:nowrap}
.chat{display:flex;flex-direction:column;gap:10px;max-height:300px;overflow:hidden}
.bubble{padding:11px 14px;border-radius:16px;font-size:13.5px;line-height:1.55;max-width:90%}
.bubble.bot{background:linear-gradient(120deg,rgba(109,94,252,.10),rgba(40,194,200,.10));border:1px solid rgba(109,94,252,.18);color:var(--ink);border-bottom-left-radius:5px;align-self:flex-start}
.bubble.user{background:#fff;border:1px solid var(--line);color:var(--ink-2);border-bottom-right-radius:5px;align-self:flex-end}
.bubble-hint{display:block;margin-top:6px;font-style:normal;font-size:11.5px;color:var(--purple);opacity:.85}
.device-tags{display:flex;gap:8px;margin-top:14px;flex-wrap:wrap}
.device-tags span{font-size:11.5px;padding:5px 11px;border-radius:999px;background:var(--grad-soft);color:var(--purple);font-weight:600}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
@keyframes pulse{0%,100%{opacity:.85;transform:scale(1)}50%{opacity:1;transform:scale(1.05)}}

.wave-divider{height:60px;margin-top:30px;background:
  radial-gradient(120% 100% at 50% 0,rgba(109,94,252,.10),transparent 60%);}

/* ===== 通用 section ===== */
.section{max-width:var(--maxw);margin:0 auto;padding:80px 24px}
.section-alt{background:linear-gradient(180deg,rgba(109,94,252,.04),rgba(40,194,200,.04));border-radius:48px;max-width:none;padding:80px 24px}
.section-alt>*{max-width:var(--maxw);margin-left:auto;margin-right:auto}
.section-head{text-align:center;max-width:680px;margin:0 auto 50px}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:1.5px;color:var(--cyan);text-transform:uppercase;margin-bottom:12px}
.section-head h2{font-size:clamp(26px,3.6vw,40px);font-weight:800;letter-spacing:-.5px}
.section-sub{margin-top:14px;color:var(--ink-2);font-size:16px}

/* ===== 功能介绍 ===== */
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.card{padding:26px 24px;border-radius:var(--radius);transition:.28s ease}
.card:hover{transform:translateY(-6px);box-shadow:0 24px 50px -22px rgba(109,94,252,.4)}
.ic{width:52px;height:52px;border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:26px;margin-bottom:16px}
.ic-purple{background:linear-gradient(135deg,rgba(109,94,252,.16),rgba(109,94,252,.06))}
.ic-cyan{background:linear-gradient(135deg,rgba(40,194,200,.18),rgba(40,194,200,.06))}
.card h3{font-size:18px;margin-bottom:8px}
.card p{font-size:14.5px;color:var(--ink-2)}
.feature-grid .card{--ac:109,94,252;border-top:3px solid rgba(var(--ac),.9)}
.feature-grid .card:nth-child(2n){--ac:40,194,200}
.feature-grid .card .ic{background:rgba(var(--ac),.12);border:1px solid rgba(var(--ac),.24)}
.feature-grid .card:hover{box-shadow:0 26px 54px -22px rgba(var(--ac),.55)}

/* ===== 学习闭环 ===== */
.loop{position:relative;display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.loop-track{position:absolute;top:46px;left:8%;right:8%;height:2px;background:var(--grad);opacity:.35;border-radius:2px}
.loop-step{position:relative;background:var(--glass-strong);border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;box-shadow:var(--shadow-sm);transition:.28s}
.loop-step:hover{transform:translateY(-5px)}
.step-no{display:inline-flex;align-items:center;justify-content:center;width:46px;height:46px;border-radius:14px;background:var(--grad);color:#fff;font-weight:800;font-size:16px;margin-bottom:14px;box-shadow:0 10px 22px -10px rgba(109,94,252,.7)}
.loop-step h3{font-size:17px;margin-bottom:6px}
.loop-step p{font-size:14px;color:var(--ink-2)}

/* ===== 小伴陪学的 7 个关键时刻 ===== */
.ways-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.way-card{padding:26px 24px;border-radius:var(--radius);position:relative;transition:.28s ease;--ac:109,94,252;border-top:3px solid rgba(var(--ac),.9);overflow:hidden}
.way-card:nth-child(2n){--ac:40,194,200}
.way-card::before{content:"";position:absolute;left:0;top:0;width:100%;height:100%;background:linear-gradient(135deg,rgba(var(--ac),.08),transparent 45%);pointer-events:none;opacity:.6}
.way-card:hover{transform:translateY(-5px);box-shadow:0 24px 50px -22px rgba(var(--ac),.4)}
.way-no{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:14px;background:rgba(var(--ac),.14);border:1px solid rgba(var(--ac),.28);color:rgb(var(--ac));font-weight:800;font-size:18px;margin-bottom:14px}
.way-card h3{font-size:17.5px;margin-bottom:8px;padding-right:8px}
.way-card p{font-size:14px;color:var(--ink-2);line-height:1.65}

/* ===== 优势 ===== */
.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.why-item{padding:28px 24px;border-radius:var(--radius);background:var(--glass-strong);border:1px solid var(--line);box-shadow:var(--shadow-sm);transition:.28s;--ac:109,94,252;border-top:3px solid rgba(var(--ac),.9);position:relative;overflow:hidden}
.why-item:nth-child(2n){--ac:40,194,200}
.why-item::before{content:"";position:absolute;left:0;top:0;width:100%;height:100%;background:linear-gradient(135deg,rgba(var(--ac),.08),transparent 45%);pointer-events:none;opacity:.55}
.why-item:hover{transform:translateY(-5px);box-shadow:0 24px 50px -22px rgba(var(--ac),.4);border-color:rgba(var(--ac),.35)}
.why-ic{display:inline-flex;align-items:center;justify-content:center;width:48px;height:48px;border-radius:14px;background:rgba(var(--ac),.12);border:1px solid rgba(var(--ac),.24);font-size:24px;margin-bottom:12px;position:relative;z-index:1}
.why-item h3{font-size:18px;margin-bottom:8px;position:relative;z-index:1}
.why-item p{font-size:14.5px;color:var(--ink-2);position:relative;z-index:1}

/* ===== 分学科 tabs ===== */
.tabs{max-width:880px;margin:0 auto}
.tab-bar{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:30px}
.tab{padding:11px 20px;border-radius:999px;background:var(--glass);border:1px solid var(--line);font-size:15px;font-weight:600;color:var(--ink-2);cursor:pointer;transition:.22s;font-family:inherit}
.tab:hover{color:var(--purple);border-color:var(--purple)}
.tab.active{background:var(--grad);color:#fff;border-color:transparent;box-shadow:0 10px 24px -12px rgba(109,94,252,.7)}
.tab-panels{position:relative}
.panel{display:none;background:var(--glass-strong);border:1px solid var(--line);border-radius:var(--radius-lg);padding:40px 44px;box-shadow:var(--shadow);animation:fade .35s ease;position:relative;overflow:hidden}
.panel::before{content:"";position:absolute;left:0;top:0;right:0;height:4px;background:var(--grad)}
.panel.active{display:block}
.panel h3{font-size:23px;margin-bottom:18px;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.panel ul{list-style:none;display:grid;gap:14px}
.panel li{padding-left:30px;position:relative;font-size:15.5px;color:var(--ink-2)}
.panel li strong{color:var(--ink)}
.panel li::before{content:"";position:absolute;left:0;top:9px;width:14px;height:14px;border-radius:50%;background:var(--grad);box-shadow:0 4px 10px -4px rgba(109,94,252,.7)}
@keyframes fade{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}

/* ===== 定价 ===== */
.price-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;align-items:stretch}
.price-card{padding:26px 20px;border-radius:var(--radius);position:relative;display:flex;flex-direction:column;--ac:109,94,252;border-top:3px solid rgba(var(--ac),.9);transition:.28s ease}
.price-card:nth-child(2n){--ac:40,194,200}
.price-card:nth-child(3n){--ac:109,94,252}
.price-card:nth-child(4n){--ac:40,194,200}
.price-card::before{content:"";position:absolute;left:0;top:0;width:100%;height:100%;background:linear-gradient(135deg,rgba(var(--ac),.07),transparent 45%);pointer-events:none;opacity:.55;border-radius:inherit}
.price-card:hover{transform:translateY(-5px);box-shadow:0 26px 54px -22px rgba(var(--ac),.45)}
.price-card.featured{--ac:109,94,252;border:1.5px solid transparent;background:
  linear-gradient(var(--bg-2),var(--bg-2)) padding-box,
  var(--grad) border-box;transform:translateY(-10px);box-shadow:0 32px 70px -26px rgba(109,94,252,.45)}
.price-card.featured:hover{transform:translateY(-14px)}
.ribbon{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--grad);color:#fff;font-size:12.5px;font-weight:700;padding:5px 16px;border-radius:999px;box-shadow:var(--shadow-sm);z-index:2}
.price-card h3{font-size:18px;position:relative;z-index:1;min-height:44px}
.price{display:flex;align-items:baseline;gap:8px;margin:14px 0 6px;position:relative;z-index:1}
.price .amt{font-size:34px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.price .unit{font-size:13px;color:var(--ink-3)}
.price-desc{font-size:13px;color:var(--ink-2);margin-bottom:16px;position:relative;z-index:1}
.price-card ul{list-style:none;display:grid;gap:10px;margin-bottom:22px;flex:1;position:relative;z-index:1}
.price-card li{padding-left:24px;position:relative;font-size:13.5px;color:var(--ink-2)}
.price-card li::before{content:"✓";position:absolute;left:0;color:rgb(var(--ac));font-weight:800}

/* ===== 下载 ===== */
.download-wrap{display:grid;grid-template-columns:.8fr 1.2fr;gap:36px;padding:44px;align-items:center}
.dl-mascot{display:flex;justify-content:center}
.dl-mascot img{width:230px;filter:drop-shadow(0 20px 36px rgba(109,94,252,.4));animation:float 6s ease-in-out infinite}
.dl-right h3{font-size:26px;margin-bottom:10px}
.dl-right p{color:var(--ink-2);margin-bottom:18px}
.dl-meta{list-style:none;display:grid;gap:10px;margin-bottom:24px}
.dl-meta li{padding-left:26px;position:relative;font-size:14.5px;color:var(--ink-2)}
.dl-meta li::before{content:"•";position:absolute;left:8px;color:var(--purple);font-weight:800}
.dl-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:14px}
.dl-note{font-size:13px;color:var(--ink-3)}

/* ===== CTA band ===== */
.cta-band{max-width:var(--maxw);margin:0 auto;padding:30px 24px 80px}
.cta-inner{display:grid;grid-template-columns:1fr 1fr;gap:36px;padding:46px 48px;align-items:center;border-radius:var(--radius-lg)}
.cta-copy h2{font-size:30px;margin-bottom:10px}
.cta-copy p{color:var(--ink-2);font-size:16px}
.cta-form{display:flex;flex-direction:column;gap:12px}
.cta-form input{padding:15px 18px;border-radius:14px;border:1px solid var(--line);font-size:15px;font-family:inherit;background:#fff;outline:none;transition:.2s}
.cta-form input:focus{border-color:var(--purple);box-shadow:0 0 0 4px rgba(109,94,252,.14)}
.cta-hint{font-size:12.5px;color:var(--ink-3)}

/* ===== 代理商 ===== */
.agent-wrap{padding:42px 44px}
.agent-cols{display:grid;grid-template-columns:1fr 1fr;gap:30px;margin-bottom:28px}
.agent-col h3{font-size:19px;margin-bottom:14px}
.agent-col ul{list-style:none;display:grid;gap:10px}
.agent-col li{padding-left:26px;position:relative;font-size:15px;color:var(--ink-2)}
.agent-col li::before{content:"◆";position:absolute;left:0;color:var(--cyan);font-size:12px;top:3px}
.agent-cta{display:flex;align-items:center;gap:18px;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:24px}
.agent-note{font-size:13.5px;color:var(--ink-3);max-width:420px}

/* ===== 待拍板 ===== */
.decision-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.decision{padding:28px 26px;border-radius:var(--radius)}
.tag{display:inline-block;font-size:12.5px;font-weight:800;padding:4px 12px;border-radius:999px;margin-bottom:12px}
.tag-purple{background:linear-gradient(135deg,rgba(109,94,252,.18),rgba(109,94,252,.06));color:var(--purple)}
.tag-cyan{background:linear-gradient(135deg,rgba(40,194,200,.2),rgba(40,194,200,.06));color:#1b9aa0}
.decision h3{font-size:18px;margin-bottom:8px}
.decision p{font-size:14.5px;color:var(--ink-2)}

/* ===== 页脚 ===== */
.footer{background:linear-gradient(180deg,rgba(28,27,46,.02),rgba(28,27,46,.06));padding:56px 24px 26px;margin-top:30px}
.footer-inner{max-width:var(--maxw);margin:0 auto;display:grid;grid-template-columns:1.3fr 2fr;gap:40px}
.footer-brand{display:flex;gap:16px;align-items:flex-start}
.footer-mascot{width:54px;height:54px;object-fit:contain;filter:drop-shadow(0 8px 16px rgba(109,94,252,.35))}
.footer-brand strong{font-size:17px}
.footer-brand p{font-size:13.5px;color:var(--ink-3);margin-top:6px;max-width:280px}
.footer-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.footer-col h4{font-size:14px;margin-bottom:14px;color:var(--ink)}
.footer-col a{display:block;font-size:13.5px;color:var(--ink-3);padding:5px 0;transition:.2s}
.footer-col a:hover{color:var(--purple)}
.footer-bottom{max-width:var(--maxw);margin:36px auto 0;padding-top:20px;border-top:1px solid var(--line);font-size:12.5px;color:var(--ink-3);text-align:center}

/* ===== 响应式 ===== */
@media (max-width:980px){
  .hero-inner{grid-template-columns:1fr;gap:36px}
  .hero-art{order:-1}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .loop{grid-template-columns:repeat(2,1fr)}
  .loop-track{display:none}
  .ways-grid{grid-template-columns:repeat(2,1fr)}
  .why-grid,.price-grid{grid-template-columns:1fr}
  .price-card.featured{transform:none}
  .download-wrap,.cta-inner,.agent-cols{grid-template-columns:1fr}
  .decision-grid{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr}
}
@media (max-width:680px){
  .nav-links{
    position:fixed;top:64px;left:0;right:0;
    flex-direction:column;gap:0;padding:12px 18px 18px;
    background:rgba(247,247,252,.96);backdrop-filter:blur(20px);
    box-shadow:var(--shadow);transform:translateY(-130%);transition:.3s ease;
  }
  .nav-links.open{transform:translateY(0)}
  .nav-links a{padding:13px 14px;border-radius:12px}
  .nav-cta{display:none}
  .nav-burger{display:flex}
  .feature-grid{grid-template-columns:1fr}
  .loop{grid-template-columns:1fr}
  .ways-grid{grid-template-columns:1fr}
  .section{padding:60px 18px}
  .panel{padding:30px 26px}
  .hero-stats{gap:20px}
  .footer-cols{grid-template-columns:1fr 1fr}
}

/* ===== 家长最关心的事 ===== */
.save-wrap{display:grid;grid-template-columns:1fr auto 1fr;gap:26px;align-items:stretch;padding:40px;margin-bottom:46px;position:relative;overflow:hidden}
.save-wrap::before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(109,94,252,.06),rgba(40,194,200,.06));pointer-events:none}
.save-col{padding:6px;position:relative;z-index:1}
.save-h{font-size:20px;margin-bottom:6px;font-weight:800}
.save-h-out{color:var(--ink)}
.save-h-in{color:var(--purple)}
.save-note{font-size:13.5px;color:var(--ink-3);margin-bottom:18px}
.save-list{list-style:none;display:grid;gap:12px;margin-bottom:18px}
.save-list li{display:flex;justify-content:space-between;align-items:baseline;gap:12px;padding:14px 18px;background:var(--glass-strong);border:1px solid var(--line);border-radius:var(--radius-sm);position:relative;overflow:hidden}
.save-list li::after{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--grad)}
.save-list span{font-size:14.5px;color:var(--ink-2)}
.save-list strong{font-size:18px;font-weight:800;text-align:right}
.save-col-in .save-list strong{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.save-foot{font-size:12.5px;color:var(--ink-3);line-height:1.5}
.save-vs{display:flex;align-items:center;justify-content:center;font-weight:800;font-size:15px;color:#fff;background:var(--grad);border-radius:999px;width:58px;height:58px;align-self:center;box-shadow:var(--shadow-sm);position:relative;z-index:1}

.parent-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.parent-item{padding:26px 24px;border-radius:var(--radius);transition:.28s ease;--ac:109,94,252;border-top:3px solid rgba(var(--ac),.9);position:relative;overflow:hidden}
.parent-item:nth-child(2n){--ac:40,194,200}
.parent-item::before{content:"";position:absolute;left:0;top:0;width:100%;height:100%;background:linear-gradient(135deg,rgba(var(--ac),.08),transparent 45%);pointer-events:none;opacity:.55}
.parent-item:hover{transform:translateY(-5px);box-shadow:0 24px 50px -22px rgba(var(--ac),.4)}
.parent-item .why-ic{display:inline-flex;align-items:center;justify-content:center;width:46px;height:46px;border-radius:14px;background:rgba(var(--ac),.12);border:1px solid rgba(var(--ac),.24);font-size:24px;margin-bottom:10px;position:relative;z-index:1}
.parent-item h3{font-size:17.5px;margin:8px 0 8px;position:relative;z-index:1}
.parent-item p{font-size:14px;color:var(--ink-2);line-height:1.6;position:relative;z-index:1}

@media (max-width:980px){
  .save-wrap{grid-template-columns:1fr;gap:20px}
  .save-vs{width:100%;height:auto;padding:12px;border-radius:14px}
  .parent-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:680px){
  .parent-grid{grid-template-columns:1fr}
}

/* ===== 会员价格公示条 ===== */
.price-badge{max-width:880px;margin:22px auto 0;background:rgba(40,194,200,.08);border:1px solid rgba(40,194,200,.28);border-radius:var(--radius-sm);padding:14px 20px;text-align:left}
.price-badge p{font-size:13.5px;color:var(--ink-2);line-height:1.65}
.price-badge strong{color:var(--ink)}
.price-badge a{color:var(--purple);font-weight:600;text-decoration:underline}
.price-agree{max-width:880px;margin:14px auto 0;font-size:13px;color:var(--ink-3);text-align:center}
.price-agree a{color:var(--purple);font-weight:600;text-decoration:underline}

/* ===== 底部合规提示栏 ===== */
.compliance-bar{margin:0 auto;max-width:var(--maxw);padding:10px 24px 44px}
.compliance-inner{display:flex;gap:14px;align-items:flex-start;background:linear-gradient(120deg,rgba(255,193,7,.10),rgba(255,152,0,.08));border:1px solid rgba(255,170,0,.35);border-radius:var(--radius-sm);padding:18px 22px}
.compliance-ic{font-size:20px;line-height:1.4;flex:none}
.compliance-inner p{font-size:13.5px;color:var(--ink-2);line-height:1.65}
.compliance-inner strong{color:var(--ink)}
.compliance-inner a{color:var(--purple);font-weight:600;text-decoration:underline}

/* ===== 协议 / 退费政策 文档页 ===== */
.doc-page{max-width:880px;margin:0 auto;padding:46px 28px 64px}
.doc-page .doc-back{display:inline-flex;align-items:center;gap:6px;color:var(--ink-3);font-size:13.5px;text-decoration:none;margin-bottom:18px}
.doc-page .doc-back:hover{color:var(--purple)}
.doc-page h1{font-size:27px;line-height:1.35;margin-bottom:6px}
.doc-page .doc-meta{font-size:13px;color:var(--ink-3);margin-bottom:26px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.doc-page .doc-warn{background:linear-gradient(120deg,rgba(255,193,7,.12),rgba(255,152,0,.08));border:1px solid rgba(255,170,0,.4);border-radius:var(--radius-sm);padding:14px 18px;font-size:13.5px;color:var(--ink-2);margin:0 0 28px}
.doc-page .doc-warn strong{color:var(--ink)}
.doc-page h2{font-size:18.5px;margin:30px 0 10px;padding-left:12px;border-left:4px solid var(--purple)}
.doc-page ol.doc-level{padding-left:0;list-style:none;counter-reset:art}
.doc-page ol.doc-level>li{margin:0 0 22px}
.doc-page ol.doc-level>li>strong{display:block;font-size:15.5px;color:var(--ink);margin-bottom:6px}
.doc-page ol.doc-level>li>strong::before{counter-increment:art;content:"第 " counter(art) " 条　";color:var(--purple);font-weight:700}
.doc-page p,.doc-page li{font-size:14.5px;color:var(--ink-2);line-height:1.85}
.doc-page ul.doc-list{padding-left:22px;margin:6px 0}
.doc-page ul.doc-list li{margin:5px 0}
.doc-page .doc-formula{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-sm);padding:14px 18px;font-size:14px;color:var(--ink);margin:10px 0}
.doc-page .doc-scene{background:rgba(109,94,252,.06);border-left:3px solid var(--cyan);border-radius:0 var(--radius-sm) var(--radius-sm) 0;padding:12px 16px;margin:12px 0}
.doc-page .doc-scene b{color:var(--ink)}
.doc-page .doc-foot{margin-top:40px;padding-top:18px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-3)}
@media (max-width:680px){
  .doc-page{padding:32px 18px 48px}
  .doc-page h1{font-size:22px}
}