:root{
  --blue:#2456A6; --blue-dark:#1A4080; --amber:#F0A23B; --amber-dark:#D9881F;
  --ink:#26303B; --gray:#5C6B7A; --bg:#FFFFFF; --bg-soft:#F6F8FA; --bg-warm:#FBF6EE;
  --radius:14px; --shadow:0 4px 20px rgba(38,48,59,.08);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:70px}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Source Han Sans SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);font-size:16px;line-height:1.7}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
section{padding:56px 0}
h2{font-size:clamp(24px,4vw,32px);text-align:center;margin-bottom:8px}
.sub{text-align:center;color:var(--gray);margin-bottom:36px;font-size:15px}
.btn{display:inline-block;padding:13px 28px;border-radius:999px;font-weight:600;font-size:16px;transition:.2s;cursor:pointer;border:none}
.btn-primary{background:var(--amber);color:#fff}
.btn-primary:hover{background:var(--amber-dark)}
.btn-outline{border:2px solid var(--blue);color:var(--blue);background:#fff}
.btn-outline:hover{background:var(--blue);color:#fff}
.btn-blue{background:var(--blue);color:#fff}
.btn-blue:hover{background:var(--blue-dark)}

/* notice bar */
.notice{background:var(--amber);color:#fff;text-align:center;font-size:14px;font-weight:600;padding:8px 16px;display:block}
.notice:hover{background:var(--amber-dark)}

/* header */
header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);box-shadow:0 1px 0 rgba(38,48,59,.08)}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{font-size:20px;font-weight:800;color:var(--blue)}
.logo span{color:var(--amber)}
.nav ul{display:flex;gap:26px;list-style:none}
.nav ul a{font-size:15px;color:var(--ink);font-weight:500}
.nav ul a:hover{color:var(--blue)}
.nav .tel{font-weight:700;color:var(--blue);font-size:15px}
.menu-btn{display:none;background:none;border:none;font-size:26px;color:var(--blue)}

/* hero */
.hero{padding:0;background:var(--bg-warm)}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;padding:56px 0}
.hero h1{font-size:clamp(28px,4.5vw,42px);line-height:1.35;margin-bottom:16px}
.hero h1 em{font-style:normal;color:var(--blue)}
.hero p{color:var(--gray);margin-bottom:26px;font-size:17px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-img{border-radius:20px;overflow:hidden;box-shadow:var(--shadow);position:relative;aspect-ratio:4/3}
.hero-img img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0;transition:opacity 1.2s ease}
.hero-img img.on{opacity:1}
.hero-dots{position:absolute;bottom:12px;left:0;right:0;display:flex;justify-content:center;gap:8px;z-index:2}
.hero-dots i{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.5);transition:.3s}
.hero-dots i.on{background:#fff;width:20px;border-radius:4px}
.trust-strip{background:var(--blue);color:#fff;padding:18px 0}
.trust-strip .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
.trust-item{text-align:center;flex:1;min-width:120px}
.trust-item b{display:block;font-size:22px}
.trust-item small{opacity:.85;font-size:13px}

/* promo 当季热招 */
.promo{background:var(--bg-soft);padding:40px 0}
.promo-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.promo-card{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:22px;position:relative;border-top:4px solid var(--amber);display:flex;flex-direction:column}
.promo-card .ptag{display:inline-block;align-self:flex-start;background:#FDEEDA;color:var(--amber-dark);font-size:12.5px;font-weight:700;border-radius:6px;padding:2px 10px;margin-bottom:10px}
.promo-card h3{font-size:18px;margin-bottom:6px}
.promo-card p{font-size:14px;color:var(--gray);flex:1;margin-bottom:14px}
.promo-card .btn{padding:9px 20px;font-size:14px;align-self:flex-start}

/* cards */
.grid{display:grid;gap:22px}
.g4{grid-template-columns:repeat(4,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.card{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;display:flex;flex-direction:column}
.card .thumb{aspect-ratio:4/3;overflow:hidden}
.card .thumb img{width:100%;height:100%;object-fit:cover;transition:.3s}
.card:hover .thumb img{transform:scale(1.04)}
.thumb.ph{display:flex;align-items:center;justify-content:center;font-size:54px;background:linear-gradient(135deg,#FBF6EE,#F3E3C8)}
.thumb.ph.bl{background:linear-gradient(135deg,#EEF3FB,#D5E2F5)}
.card .body{padding:18px 20px 22px;flex:1;display:flex;flex-direction:column}
.card h3{font-size:18px;margin-bottom:6px}
.card h3 a:hover{color:var(--blue)}
.card .age{display:inline-block;background:var(--bg-warm);color:var(--amber-dark);font-size:13px;font-weight:600;border-radius:6px;padding:2px 10px;margin-bottom:10px;align-self:flex-start}
.card p{font-size:14px;color:var(--gray);flex:1}
.card .actions{margin-top:14px;display:flex;gap:10px;flex-wrap:wrap}
.card .actions .btn{padding:9px 18px;font-size:14px}
.card .more{margin-top:10px;font-size:14px;color:var(--blue);font-weight:600}
.card .more:hover{text-decoration:underline}
.tag-hot{position:absolute;top:12px;left:12px;background:var(--amber);color:#fff;font-size:12px;font-weight:700;padding:3px 10px;border-radius:6px}
.rel{position:relative}

/* flow */
.flow{background:var(--bg-soft)}
.steps{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
.steps.s4{grid-template-columns:repeat(4,1fr)}
.step{background:#fff;border-radius:var(--radius);padding:18px 14px;text-align:center;box-shadow:var(--shadow)}
.step .num{width:34px;height:34px;border-radius:50%;background:var(--blue);color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;margin:0 auto 10px}
.step b{display:block;font-size:15px;margin-bottom:4px}
.step small{color:var(--gray);font-size:12.5px;line-height:1.5;display:block}

/* gallery */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.gallery figure{border-radius:var(--radius);overflow:hidden;position:relative;aspect-ratio:4/3}
.gallery img{width:100%;height:100%;object-fit:cover}
.gallery figcaption{position:absolute;bottom:0;left:0;right:0;background:linear-gradient(transparent,rgba(0,0,0,.55));color:#fff;font-size:14px;padding:24px 14px 10px}

/* meals */
.meals{background:var(--bg-warm)}
.meal-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:32px;align-items:center}
.meal-pics{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.meal-pics img{border-radius:var(--radius);aspect-ratio:1/1;object-fit:cover;width:100%}
.checklist{list-style:none}
.checklist li{padding:10px 0 10px 34px;position:relative;border-bottom:1px dashed rgba(38,48,59,.12);font-size:15px}
.checklist li::before{content:"✓";position:absolute;left:4px;color:var(--amber);font-weight:800}

/* why */
.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.why{background:#fff;border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.why b{display:block;margin-bottom:6px;font-size:16px}
.why p{font-size:14px;color:var(--gray)}

/* faq */
.faq details{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:12px;padding:0 22px}
.faq summary{cursor:pointer;font-weight:600;padding:18px 0;font-size:16px;list-style:none;position:relative;padding-right:30px}
.faq summary::after{content:"+";position:absolute;right:4px;top:14px;font-size:22px;color:var(--amber)}
.faq details[open] summary::after{content:"−"}
.faq details p{padding:0 0 18px;color:var(--gray);font-size:15px}

/* booking */
.booking{background:var(--blue)}
.booking h2,.booking .sub{color:#fff}
.booking .sub{opacity:.85}
.form-card{background:#fff;border-radius:18px;padding:32px;max-width:560px;margin:0 auto;box-shadow:var(--shadow)}
.form-card label{display:block;font-size:14px;font-weight:600;margin:14px 0 6px}
.form-card input,.form-card select{width:100%;padding:12px 14px;border:1.5px solid #D7DEE6;border-radius:10px;font-size:15px;background:#fff}
.form-card input:focus,.form-card select:focus{outline:none;border-color:var(--blue)}
.form-card .btn{width:100%;margin-top:22px}
.form-note{font-size:13px;color:var(--gray);text-align:center;margin-top:12px}
#form-done{display:none;text-align:center;padding:30px 10px}
#form-done b{font-size:18px;color:var(--blue);display:block;margin-bottom:10px}

/* detail pages */
.crumb{font-size:13.5px;color:var(--gray);padding:14px 0}
.crumb a{color:var(--blue)}
.detail-hero{background:var(--bg-warm);padding:36px 0 44px}
.detail-hero .dh-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:36px;align-items:center}
.detail-hero h1{font-size:clamp(26px,4vw,36px);margin-bottom:10px}
.detail-hero .age{display:inline-block;background:#fff;color:var(--amber-dark);font-size:14px;font-weight:700;border-radius:8px;padding:4px 14px;margin-bottom:14px;box-shadow:var(--shadow)}
.detail-hero p.lead{color:var(--gray);font-size:16.5px;margin-bottom:22px}
.detail-hero .dh-img{border-radius:18px;overflow:hidden;box-shadow:var(--shadow);aspect-ratio:4/3}
.detail-hero .dh-img img{width:100%;height:100%;object-fit:cover}
.facts{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:24px}
.facts span{background:#fff;border-radius:8px;padding:6px 14px;font-size:13.5px;font-weight:600;box-shadow:var(--shadow)}
.content-sec h2{text-align:left}
.content-sec .sub{text-align:left;margin-bottom:24px}
.feature-list{list-style:none;margin-top:8px}
.feature-list li{padding:14px 0 14px 38px;position:relative;border-bottom:1px solid rgba(38,48,59,.08);font-size:15.5px}
.feature-list li::before{content:"●";position:absolute;left:8px;color:var(--amber);font-size:12px;top:19px}
.feature-list li b{color:var(--ink)}
.stage-table{width:100%;border-collapse:collapse;margin-top:10px;font-size:14.5px;background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.stage-table th{background:var(--blue);color:#fff;padding:12px 14px;text-align:left;font-size:14px}
.stage-table td{padding:12px 14px;border-bottom:1px solid rgba(38,48,59,.08);color:var(--gray)}
.stage-table td:first-child{font-weight:700;color:var(--ink);white-space:nowrap}
.cta-band{background:var(--blue);color:#fff;text-align:center;padding:46px 20px}
.cta-band h2{color:#fff;margin-bottom:10px}
.cta-band p{opacity:.85;margin-bottom:24px}
.cta-band .btn-primary{margin:0 8px}
.cta-band .btn-ghost{border:2px solid rgba(255,255,255,.7);color:#fff;background:transparent}
.cta-band .btn-ghost:hover{background:#fff;color:var(--blue)}

/* footer */
footer{background:#1C2733;color:#B8C4CF;padding:44px 0 90px;font-size:14px}
footer .cols{display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px;margin-bottom:28px}
footer h4{color:#fff;margin-bottom:12px;font-size:16px}
footer a:hover{color:#fff}
footer ul{list-style:none}
footer li{margin-bottom:8px}
.copyright{border-top:1px solid rgba(255,255,255,.12);padding-top:18px;font-size:12.5px;color:#7E8C99;text-align:center}

/* sticky mobile bar */
.mobile-bar{display:none;position:fixed;bottom:0;left:0;right:0;z-index:200;background:#fff;box-shadow:0 -2px 14px rgba(0,0,0,.12);grid-template-columns:1fr 1fr 1.4fr}
.mobile-bar a{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:9px 0;font-size:13px;font-weight:600;gap:2px}
.mobile-bar .mb-tel{color:var(--blue)}
.mobile-bar .mb-wx{color:#22A55C}
.mobile-bar .mb-book{background:var(--amber);color:#fff;font-size:16px}

@media(max-width:880px){
  section{padding:42px 0}
  .nav ul{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;flex-direction:column;padding:16px 24px;gap:16px;box-shadow:0 8px 16px rgba(0,0,0,.08)}
  .nav ul.open{display:flex}
  .menu-btn{display:block}
  .nav .tel{display:none}
  .hero-grid{grid-template-columns:1fr;padding:36px 0;gap:24px}
  .g4,.g3,.why-grid,.promo-grid{grid-template-columns:repeat(2,1fr)}
  .steps,.steps.s4{grid-template-columns:repeat(3,1fr)}
  .gallery{grid-template-columns:repeat(2,1fr)}
  .meal-grid{grid-template-columns:1fr}
  .detail-hero .dh-grid{grid-template-columns:1fr}
  footer .cols{grid-template-columns:1fr}
  .mobile-bar{display:grid}
}
@media(max-width:520px){
  .g4,.g3,.promo-grid{grid-template-columns:1fr}
  .steps,.steps.s4{grid-template-columns:repeat(2,1fr)}
  .trust-item b{font-size:18px}
}

/* ── 通用图片轮播（淡入淡出，复用首屏效果） ── */
.dh-img.carousel,.gallery figure.carousel{position:relative}
.dh-img.carousel img,.gallery figure.carousel img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0;transition:opacity 1.1s ease}
.dh-img.carousel img.on,.gallery figure.carousel img.on{opacity:1}
.carousel .dots{position:absolute;bottom:12px;left:0;right:0;display:flex;justify-content:center;gap:8px;z-index:3}
.carousel .dots i{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.55);transition:.3s;cursor:pointer}
.carousel .dots i.on{background:#fff;width:20px;border-radius:4px}
.gallery figure.carousel .dots{bottom:auto;top:10px}

/* ════════ 流程时间线 journey ════════ */
.journey{display:grid;gap:20px}
.journey.j4{grid-template-columns:repeat(4,1fr)}
.journey.j6{grid-template-columns:repeat(6,1fr)}
.jstep{position:relative;display:flex;flex-direction:column;align-items:center;text-align:center}
.jstep::before{content:"";position:absolute;top:33px;left:50%;width:100%;height:3px;background:linear-gradient(90deg,var(--blue),var(--amber));opacity:.3;z-index:0}
.jstep:last-child::before{display:none}
.jnode{position:relative;z-index:1;width:66px;height:66px;border-radius:50%;background:#fff;border:3px solid var(--blue);display:flex;align-items:center;justify-content:center;font-size:29px;box-shadow:var(--shadow);margin-bottom:14px;transition:.25s}
.jstep:hover .jnode{transform:translateY(-4px);border-color:var(--amber)}
.jstepno{display:inline-block;background:var(--blue);color:#fff;font-size:11.5px;font-weight:700;border-radius:999px;padding:2px 11px;margin-bottom:8px;letter-spacing:.5px}
.jstep b{display:block;font-size:15.5px;margin-bottom:6px}
.jstep small{color:var(--gray);font-size:13px;line-height:1.6;padding:0 6px;display:block}
@media(max-width:880px){
  .journey.j4,.journey.j6{grid-template-columns:1fr;gap:0}
  .jstep{flex-direction:row;align-items:flex-start;text-align:left;gap:16px;padding-bottom:26px}
  .jstep::before{top:64px;left:32px;width:3px;height:100%;background:linear-gradient(180deg,var(--blue),var(--amber));opacity:.3}
  .jnode{margin-bottom:0;flex-shrink:0}
  .jbody{padding-top:4px}
  .jstep small{padding:0}
}

/* ════════ 美术：创意调色板主题 ════════ */
.age-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.age-card{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;display:flex;flex-direction:column;border-top:5px solid var(--c,#E8845B)}
.age-card .ac-top{padding:18px 18px 10px}
.age-card .ac-age{display:inline-block;font-size:12.5px;font-weight:700;color:#fff;background:var(--c,#E8845B);border-radius:999px;padding:2px 12px;margin-bottom:10px}
.age-card h3{font-size:17px;margin:0}
.age-card .ac-body{padding:0 18px 18px;font-size:13.5px;color:var(--gray);line-height:1.65;flex:1}
.art-feats{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.art-feat{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:20px 22px 20px 64px;position:relative}
.art-feat .af-ico{position:absolute;left:16px;top:18px;width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:19px;background:var(--c,#FDEEDA)}
.art-feat b{display:block;font-size:15.5px;margin-bottom:5px}
.art-feat p{font-size:13.5px;color:var(--gray);line-height:1.65}

/* ════════ 音乐：音乐厅主题 ════════ */
.piano{display:flex;height:44px;border-radius:8px;overflow:hidden;box-shadow:var(--shadow);max-width:520px;margin:0 auto 22px}
.piano i{flex:1;background:#fff;border-right:1px solid #dcdcdc;position:relative}
.piano i:last-child{border-right:none}
.piano i:nth-child(7n+1)::after,.piano i:nth-child(7n+2)::after,.piano i:nth-child(7n+4)::after,.piano i:nth-child(7n+5)::after,.piano i:nth-child(7n+6)::after{content:"";position:absolute;top:0;right:-18%;width:36%;height:60%;background:#26303B;border-radius:0 0 3px 3px;z-index:1}
.inst-row{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-bottom:28px}
.inst-chip{display:flex;align-items:center;gap:8px;background:#fff;border:1.5px solid #E3E9F1;border-radius:999px;padding:8px 18px;font-weight:600;font-size:15px;box-shadow:var(--shadow)}
.inst-chip span{font-size:20px}
.platform-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.pf-card{background:linear-gradient(160deg,#1C2733,#2A3B52);color:#fff;border-radius:var(--radius);padding:24px 22px;position:relative;overflow:hidden}
.pf-card .pf-note{position:absolute;right:12px;top:2px;font-size:52px;opacity:.12;line-height:1}
.pf-card .pf-ico{font-size:25px;margin-bottom:10px}
.pf-card b{display:block;font-size:16px;margin-bottom:8px;color:var(--amber)}
.pf-card p{font-size:13.5px;color:#C7D2DE;line-height:1.65}

@media(max-width:880px){
  .age-cards{grid-template-columns:repeat(2,1fr)}
  .art-feats{grid-template-columns:1fr}
  .platform-cards{grid-template-columns:1fr}
}
@media(max-width:520px){
  .age-cards{grid-template-columns:1fr}
}

/* ════════ 线性图标卡（书法/舞蹈通用）════════ */
.icon-feats{display:grid;gap:16px}
.icon-feats.if4{grid-template-columns:repeat(4,1fr)}
.icon-feats.if2{grid-template-columns:repeat(2,1fr)}
.if-card{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:24px 20px;text-align:center;border-top:3px solid var(--accent,var(--blue))}
.if-ico{width:42px;height:42px;margin:0 auto 14px;color:var(--accent,var(--blue))}
.if-ico svg{width:100%;height:100%;display:block}
.if-card b{display:block;font-size:16px;margin-bottom:7px}
.if-card p{color:var(--gray);font-size:13.5px;line-height:1.6}

/* 书法五阶 阶梯 */
.stage-list{display:flex;flex-direction:column;gap:12px}
.stage-row{display:grid;grid-template-columns:auto 1fr;gap:16px;align-items:center;background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:15px 20px;border-left:4px solid var(--ink)}
.stage-badge{width:54px;height:54px;border-radius:12px;background:var(--ink);color:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;line-height:1.05;flex-shrink:0}
.stage-badge span{font-size:20px;font-weight:800}
.stage-badge small{font-size:10px;font-weight:600;opacity:.85}
.stage-row h4{font-size:15.5px;margin:0 0 3px}
.stage-row .sr-fit{display:inline-block;font-size:12.5px;color:var(--amber-dark);font-weight:600;margin-bottom:4px}
.stage-row p{font-size:13.5px;color:var(--gray);line-height:1.55}
@media(max-width:880px){.icon-feats.if4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.icon-feats.if4,.icon-feats.if2{grid-template-columns:1fr}}

/* ════════ SVG 线性图标：尺寸与配色 ════════ */
.jnode{color:var(--blue)}
.jstep:hover .jnode{color:var(--amber)}
.jnode svg{width:33px;height:33px;display:block}
.af-ico{color:var(--ink)}
.af-ico svg{width:21px;height:21px;display:block}
.inst-chip svg{width:21px;height:21px;color:var(--blue);display:block}
.pf-ico{line-height:0}
.pf-ico svg{width:27px;height:27px;color:var(--amber);display:block}

/* ════════ 手机端版式优化 ════════ */
@media(max-width:880px){
  /* 首屏：为手机居中定制 */
  .hero-grid{grid-template-columns:1fr;padding:24px 0 30px;gap:18px;text-align:center}
  .hero h1{font-size:clamp(25px,6.8vw,34px);line-height:1.45;margin-bottom:14px}
  .hero p{font-size:14.5px;line-height:1.7;margin-bottom:20px}
  .hero-cta{justify-content:center;gap:10px}
  .hero-cta .btn{flex:1;padding:13px 8px;text-align:center}
  .hero-img{aspect-ratio:16/10;max-height:300px}
}
@media(max-width:700px){
  /* 托管/课程卡片：横向紧凑卡，固定图框尺寸（竖图横图都裁成一样大），缩短页面长度 */
  .g4{grid-template-columns:1fr;gap:12px}
  .g4 .card{flex-direction:row;align-items:center;overflow:hidden}
  .g4 .card .thumb{width:38%;max-width:140px;height:108px;flex-shrink:0;aspect-ratio:auto;overflow:hidden}
  .g4 .card .thumb img{width:100%;height:100%;object-fit:cover;display:block}
  .g4 .card .body{padding:10px 14px;flex:1;min-width:0}
  .g4 .card .body p{display:none}
  .g4 .card .body .actions{display:none}
  .g4 .card h3{font-size:16px;margin-bottom:3px}
  .g4 .card .age{margin-bottom:5px;white-space:nowrap}
  .g4 .card .more{margin-top:4px}
}