/* ===================== 主题变量 ===================== */
:root{
  --brand-yellow:#F5B800;
  --brand-yellow-deep:#E0A800;
  --brand-glow:#FFD43B;
  --bg-cream:#FFFDF7;
  --bg-tint:#FFF8E6;
  --bg-dark:#1A1407;
  --text:#2B2B2B;
  --text-soft:#6B6256;
  --white:#fff;
  --radius:18px;
  --shadow:0 18px 40px rgba(224,168,0,.16);
  --maxw:1160px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ===================== 基础 ===================== */
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  color:var(--text);
  background:var(--bg-cream);
  line-height:1.7;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%}
h1,h2,h3{line-height:1.25;font-weight:800;letter-spacing:.5px}
section{position:relative}

/* ===================== 按钮 ===================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.4em;
  padding:12px 26px;border-radius:999px;font-weight:700;font-size:15px;
  cursor:pointer;border:2px solid transparent;transition:.3s var(--ease);
  position:relative;overflow:hidden;
}
.btn--lg{padding:15px 34px;font-size:16px}
.btn--block{width:100%}
.btn--primary{
  background:linear-gradient(120deg,var(--brand-yellow),var(--brand-yellow-deep));
  color:#3a2c00;box-shadow:0 10px 24px rgba(245,184,0,.35);
}
.btn--primary:hover{transform:translateY(-3px);box-shadow:0 16px 34px rgba(245,184,0,.5)}
.btn--ghost{background:rgba(255,255,255,.55);border-color:rgba(224,168,0,.5);color:#7a5c00;backdrop-filter:blur(6px)}
.btn--ghost:hover{background:rgba(255,255,255,.9);transform:translateY(-3px)}
/* 光晕扩散 */
.btn--primary::after{
  content:"";position:absolute;inset:0;border-radius:999px;
  background:radial-gradient(circle at center,rgba(255,255,255,.6),transparent 60%);
  opacity:0;transform:scale(.4);transition:.45s var(--ease);
}
.btn--primary:hover::after{opacity:1;transform:scale(1.6)}

/* ===================== 渐变流光文字 ===================== */
.grad-text{
  background:linear-gradient(100deg,#F5B800,#FFD43B 35%,#FF9D2F 70%,#F5B800);
  background-size:250% 100%;
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
  animation:flow 6s linear infinite;
}
@keyframes flow{to{background-position:250% 0}}

/* ===================== 导航 ===================== */
.nav{position:fixed;top:0;left:0;right:0;z-index:50;transition:.35s var(--ease)}
.nav__inner{
  max-width:var(--maxw);margin:0 auto;padding:16px 22px;
  display:flex;align-items:center;gap:18px;
}
.nav--scrolled{background:rgba(255,253,247,.72);backdrop-filter:blur(14px);box-shadow:0 8px 30px rgba(224,168,0,.12)}
.nav__logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px}
.nav__logo-img{height:38px;width:38px;object-fit:contain;border-radius:10px;box-shadow:0 4px 12px rgba(245,184,0,.25)}
.nav__logo-text i{color:var(--brand-yellow-deep);font-style:normal}
.nav__links{display:flex;gap:26px;margin-left:auto;font-weight:600;font-size:15px}
.nav__links a{position:relative;padding:6px 0;color:var(--text-soft);transition:.25s}
.nav__links a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--brand-yellow);transition:.3s var(--ease)}
.nav__links a:hover{color:var(--text)}
.nav__links a:hover::after{width:100%}
.nav__cta{margin-left:6px}
.nav__toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav__toggle span{width:26px;height:3px;border-radius:3px;background:var(--text);transition:.3s}
.nav__toggle.open span:nth-child(1){transform:translateY(8px) rotate(45deg)}
.nav__toggle.open span:nth-child(2){opacity:0}
.nav__toggle.open span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}

/* ===================== Hero ===================== */
.hero{
  min-height:100vh;display:grid;place-items:center;text-align:center;
  padding:120px 22px 80px;overflow:hidden;position:relative;
  background:radial-gradient(120% 90% at 50% -10%,#FFF3CC 0%,var(--bg-cream) 55%);
}
.hero__canvas{position:absolute;inset:0;width:100%;height:100%;z-index:1}
.hero__glow{
  position:absolute;width:680px;height:680px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,212,59,.55),transparent 62%);
  top:-180px;left:50%;transform:translateX(-50%);
  filter:blur(10px);animation:pulse 7s ease-in-out infinite;z-index:0;
}
.hero__rings{
  position:absolute;inset:0;z-index:0;opacity:.5;
  background:
    radial-gradient(circle at 80% 20%,rgba(245,184,0,.18),transparent 30%),
    radial-gradient(circle at 12% 78%,rgba(255,157,47,.16),transparent 32%);
  animation:drift 14s ease-in-out infinite alternate;
}
@keyframes pulse{50%{transform:translateX(-50%) scale(1.12)}}
@keyframes drift{to{transform:translate(20px,-16px)}}
.hero__inner{position:relative;z-index:2;max-width:820px}
.hero__eyebrow{
  display:inline-block;letter-spacing:3px;font-weight:700;font-size:14px;
  color:#a87c00;background:rgba(245,184,0,.16);padding:7px 18px;border-radius:999px;margin-bottom:22px;
}
.hero__title{font-size:clamp(40px,7vw,76px);margin-bottom:20px;font-weight:900}
.hero__subtitle{font-size:clamp(16px,2.2vw,20px);color:var(--text-soft);margin-bottom:34px}
.hero__cta{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.hero__stats{display:flex;gap:46px;justify-content:center;margin-top:54px;flex-wrap:wrap}
.stat{display:flex;flex-direction:column;align-items:center}
.stat__num{font-size:clamp(30px,4vw,46px);font-weight:900;color:var(--brand-yellow-deep)}
.stat__label{font-size:14px;color:var(--text-soft);margin-top:4px}
.hero__scroll{
  position:absolute;bottom:26px;left:50%;transform:translateX(-50%);z-index:2;
  font-size:24px;color:var(--brand-yellow-deep);animation:bob 1.8s ease-in-out infinite;
}
@keyframes bob{50%{transform:translate(-50%,10px)}}

/* ===================== 分隔线（壮锦纹） ===================== */
.divider{
  height:40px;margin:0 auto;max-width:var(--maxw);
  background:
    repeating-linear-gradient(90deg,var(--brand-yellow) 0 14px,transparent 14px 28px) center/auto 6px no-repeat;
  filter:drop-shadow(0 0 8px rgba(245,184,0,.6));
  opacity:.8;
}

/* ===================== 区块通用 ===================== */
.section{max-width:var(--maxw);margin:0 auto;padding:96px 22px}
.section--tint{
  max-width:none;background:linear-gradient(180deg,var(--bg-tint),var(--bg-cream));
}
.section--tint > *{max-width:var(--maxw);margin-left:auto;margin-right:auto}
.section__head{text-align:center;max-width:720px;margin:0 auto 52px}
.section__tag{
  display:inline-block;font-weight:700;font-size:13px;letter-spacing:2px;
  color:var(--brand-yellow-deep);margin-bottom:14px;
}
.section__tag--light{color:var(--brand-glow)}
.section__title{font-size:clamp(26px,4vw,40px);margin-bottom:14px}
.section__desc{color:var(--text-soft);font-size:16px}

/* ===================== 五步学习法 ===================== */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.step{padding:28px 18px;border-radius:var(--radius);text-align:center;position:relative}
.step__no{
  position:absolute;top:14px;right:16px;font-size:34px;font-weight:900;
  color:rgba(245,184,0,.22);
}
.step__icon{width:78px;height:78px;border-radius:22px;display:inline-flex;align-items:center;justify-content:center;background:linear-gradient(135deg,rgba(255,212,59,.22),rgba(224,168,0,.10));border:1px solid rgba(245,184,0,.4);color:var(--brand-yellow-deep);margin-bottom:18px;transition:.3s var(--ease)}
.step__icon svg{width:42px;height:42px}
.step h3{font-size:18px;margin-bottom:8px}
.step p{font-size:14px;color:var(--text-soft)}

/* ===================== 网格卡片 ===================== */
.grid{display:grid;gap:22px}
.grid--4{grid-template-columns:repeat(4,1fr)}
.grid--3{grid-template-columns:repeat(3,1fr)}
.card,.teacher{padding:30px 24px;border-radius:var(--radius);text-align:center;transition:transform .25s var(--ease)}
.card__deco{width:78px;height:78px;border-radius:22px;display:inline-flex;align-items:center;justify-content:center;background:linear-gradient(135deg,rgba(255,212,59,.22),rgba(224,168,0,.10));border:1px solid rgba(245,184,0,.4);color:var(--brand-yellow-deep);margin-bottom:18px;transition:.3s var(--ease)}
.card__deco svg{width:42px;height:42px}
.glass:hover .step__icon,.glass:hover .card__deco{box-shadow:0 12px 26px rgba(245,184,0,.4);transform:translateY(-2px)}
.card h3,.teacher h3{font-size:19px;margin-bottom:8px}
.card p,.teacher p{font-size:14.5px;color:var(--text-soft)}

/* ===================== 门店卡片 ===================== */
.store-card{padding:26px 22px;border-radius:var(--radius);text-align:left;position:relative;overflow:hidden}
.store-card::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--brand-yellow),var(--brand-yellow-deep))}
.store-card__top{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:12px}
.store-card h3{font-size:20px}
.store-card__tag{font-size:12px;font-weight:700;padding:5px 12px;border-radius:999px;white-space:nowrap}
.tag--flag{background:rgba(245,184,0,.18);color:var(--brand-yellow-deep)}
.tag--school{background:rgba(224,130,0,.16);color:#a85e00}
.tag--west{background:rgba(180,150,80,.18);color:#7a6328}
.store-card__addr{font-size:14px;color:var(--text-soft);margin-bottom:18px;min-height:42px}
.store-card__contact{display:flex;flex-direction:column;gap:4px;padding-top:16px;border-top:1px solid rgba(224,168,0,.2)}
.store-card__contact span{font-size:13px;color:var(--text-soft)}
.store-card__contact b{font-size:18px;color:var(--brand-yellow-deep);font-weight:800;letter-spacing:.5px}

/* ===================== 玻璃拟态发光 ===================== */
.glass{
  background:rgba(255,255,255,.55);
  backdrop-filter:blur(10px);
  border:1px solid rgba(245,184,0,.35);
  box-shadow:var(--shadow);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s;
}
.glass:hover{
  border-color:rgba(245,184,0,.8);
  box-shadow:0 22px 48px rgba(245,184,0,.28);
}

/* ===================== 南宁本地化 ===================== */
.section--nanning{
  max-width:none;
  background:
    radial-gradient(80% 60% at 85% 20%,rgba(255,212,59,.22),transparent 60%),
    radial-gradient(70% 60% at 10% 90%,rgba(255,157,47,.16),transparent 60%),
    var(--bg-cream);
}
.nanning{
  max-width:var(--maxw);margin:0 auto;
  display:grid;grid-template-columns:1.05fr .95fr;gap:46px;align-items:center;
}
.nanning__list{list-style:none;margin:24px 0 30px;display:grid;gap:14px}
.nanning__list li{display:flex;align-items:center;gap:14px;font-size:15.5px;color:var(--text)}
.nanning__list span{flex:0 0 auto;width:42px;height:42px;border-radius:13px;display:grid;place-items:center;background:rgba(245,184,0,.14);color:var(--brand-yellow-deep);box-shadow:inset 0 0 0 1px rgba(245,184,0,.3);transition:.3s var(--ease)}
.nanning__list li:hover span{background:rgba(245,184,0,.24);box-shadow:inset 0 0 0 1px rgba(245,184,0,.55),0 8px 18px rgba(245,184,0,.25)}
.nanning__list span svg{width:22px;height:22px}
.nanning__art{position:relative;display:grid;place-items:center}
.nanning__svg{width:100%;max-width:360px;filter:drop-shadow(0 18px 36px rgba(245,184,0,.3));animation:float 6s ease-in-out infinite}
@keyframes float{50%{transform:translateY(-14px)}}
.nanning__badge{
  position:absolute;bottom:6px;right:10px;background:linear-gradient(120deg,var(--brand-yellow),var(--brand-yellow-deep));
  color:#3a2c00;font-weight:800;padding:8px 18px;border-radius:999px;box-shadow:0 10px 24px rgba(245,184,0,.4);
}

/* ===================== 师资 ===================== */
.teacher{text-align:center}
.teacher__avatar{
  width:64px;height:64px;margin:0 auto 14px;border-radius:50%;
  display:grid;place-items:center;font-size:26px;font-weight:900;color:#3a2c00;
  background:linear-gradient(135deg,var(--brand-yellow),var(--brand-yellow-deep));
  box-shadow:0 8px 18px rgba(245,184,0,.4);
}

/* ===================== 深色品牌区块 ===================== */
.section--dark{
  max-width:none;background:
    radial-gradient(60% 80% at 80% 10%,rgba(245,184,0,.18),transparent 60%),
    var(--bg-dark);
  color:#f4ecd8;
}
.section--dark > *{max-width:var(--maxw);margin-left:auto;margin-right:auto}
.section--dark .section__title{color:#fff}
.section--dark .section__desc{color:#c9bfa6}
.about__grid{gap:24px}
.about__item{
  padding:34px 28px;border-radius:var(--radius);
  background:rgba(255,255,255,.05);
  border:1px solid rgba(245,184,0,.25);
  transition:.3s var(--ease);
  text-align:center;
}
.about__item:hover{border-color:rgba(245,184,0,.7);transform:translateY(-6px);background:rgba(255,255,255,.08)}
.about__icon{width:80px;height:80px;border-radius:22px;display:inline-flex;align-items:center;justify-content:center;background:linear-gradient(135deg,rgba(255,212,59,.18),rgba(224,168,0,.08));border:1px solid rgba(245,184,0,.4);color:var(--brand-glow);margin-bottom:18px;transition:.3s var(--ease)}
.about__icon svg{width:44px;height:44px}
.about__item:hover .about__icon{box-shadow:0 12px 26px rgba(245,184,0,.45);transform:translateY(-2px)}
.about__item h3{font-size:20px;margin-bottom:8px;color:#fff}
.about__item p{font-size:14.5px;color:#c9bfa6}

/* ===================== 联系 ===================== */
.contact{display:grid;grid-template-columns:1fr 1fr;gap:46px;align-items:start}
.contact__list{list-style:none;margin-top:24px;display:grid;gap:14px}
.contact__list li{display:flex;align-items:center;gap:14px;font-size:15.5px}
.contact__list span{flex:0 0 auto;width:42px;height:42px;border-radius:13px;display:grid;place-items:center;background:rgba(245,184,0,.14);color:var(--brand-yellow-deep);box-shadow:inset 0 0 0 1px rgba(245,184,0,.3);transition:.3s var(--ease)}
.contact__list li:hover span{background:rgba(245,184,0,.24);box-shadow:inset 0 0 0 1px rgba(245,184,0,.55),0 8px 18px rgba(245,184,0,.25)}
.contact__list span svg{width:22px;height:22px}
.contact__list b{color:var(--text);font-weight:700}
.contact__form{padding:32px 28px;border-radius:var(--radius)}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:7px;color:var(--text-soft)}
.field input,.field select{
  width:100%;padding:13px 15px;border-radius:12px;font-size:15px;
  border:1px solid rgba(224,168,0,.35);background:rgba(255,255,255,.7);color:var(--text);
  transition:.25s;font-family:inherit;
}
.field input:focus,.field select:focus{outline:none;border-color:var(--brand-yellow);box-shadow:0 0 0 3px rgba(245,184,0,.2)}
.contact__hint{margin-top:12px;font-size:14px;color:var(--brand-yellow-deep);text-align:center;min-height:20px}

/* ===================== 页脚 ===================== */
.footer{background:var(--bg-dark);color:#c9bfa6;padding:46px 22px 30px}
.footer__inner{max-width:var(--maxw);margin:0 auto;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:24px}
.footer__brand{display:flex;align-items:center;gap:14px}
.footer__logo{height:44px;width:auto}
.footer__brand strong{color:#fff;font-size:18px;display:block}
.footer__brand p{font-size:13px}
.footer__links{display:flex;gap:24px;font-size:14.5px}
.footer__links a:hover{color:var(--brand-glow)}
.footer__copy{text-align:center;margin-top:26px;font-size:13px;opacity:.7;border-top:1px solid rgba(255,255,255,.08);padding-top:20px}
.footer__beian{text-align:center;margin-top:12px;font-size:13px}
.footer__beian a{color:rgba(255,255,255,.6);text-decoration:none;letter-spacing:.3px}
.footer__beian a:hover{color:var(--brand-yellow);text-decoration:underline}

/* ===================== 滚动渐入 ===================== */
.reveal{opacity:0;transform:translateY(34px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ===================== 响应式 ===================== */
@media (max-width:980px){
  .steps{grid-template-columns:repeat(2,1fr)}
  .grid--4{grid-template-columns:repeat(2,1fr)}
  .nanning{grid-template-columns:1fr}
  .contact{grid-template-columns:1fr}
}
@media (max-width:768px){
  .nav__links{
    position:fixed;top:66px;left:0;right:0;flex-direction:column;gap:0;
    background:rgba(255,253,247,.96);backdrop-filter:blur(14px);
    padding:10px 22px 22px;box-shadow:0 18px 30px rgba(224,168,0,.14);
    transform:translateY(-130%);transition:.35s var(--ease);margin-left:0;
  }
  .nav__links.open{transform:translateY(0)}
  .nav__links a{padding:14px 0;border-bottom:1px solid rgba(224,168,0,.15)}
  .nav__cta{display:none}
  .nav__toggle{display:flex;margin-left:auto}
  .grid--3{grid-template-columns:1fr}
  .hero__stats{gap:30px}
  .section{padding:70px 18px}
}
@media (max-width:520px){
  .steps{grid-template-columns:1fr}
  .grid--4{grid-template-columns:1fr}
  .footer__inner{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}