/* Easylearning 易思学 · 全站样式 */
:root{
  --paper:#FFFBF4;
  --ink:#241F19;
  --muted:#6E6257;
  --orange:#E8590C;
  --orange-deep:#B54708;
  --tint:#FBEADB;
  --line:#EDDFCE;
  --white:#FFFFFF;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
  --radius:14px;
  --maxw:1120px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
}
body{font-family:var(--sans);background:var(--paper);color:var(--ink);line-height:1.75;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
a:focus-visible,button:focus-visible{outline:3px solid var(--orange);outline-offset:3px;border-radius:4px}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* 顶部通告 */
.topbar{background:var(--ink);color:#F5EFE7;font-size:13px;text-align:center;padding:8px 16px;letter-spacing:.05em}
.topbar strong{color:#FFB37A;font-weight:600}

/* 导航 */
header{position:sticky;top:0;z-index:50;background:rgba(255,251,244,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px;gap:16px}
.brand{display:flex;align-items:center;gap:12px;flex:none}
.logo-block{width:44px;height:44px;background:var(--orange);color:#fff;border-radius:10px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:15px;letter-spacing:-.02em;font-family:Georgia,"Times New Roman",serif;font-style:italic}
.brand-name{display:flex;flex-direction:column;line-height:1.12;align-items:flex-end}
.brand-name .en{font-weight:800;font-size:16px;color:var(--ink);letter-spacing:.01em;align-self:flex-start}
.brand-name .cn{font-size:11px;font-weight:700;letter-spacing:.28em;color:var(--ink);margin-top:2px;margin-right:-0.28em}
nav.menu{display:flex;gap:24px;font-size:15px;font-weight:500}
nav.menu a{position:relative;padding:6px 0;color:#4A4138;white-space:nowrap}
nav.menu a::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--orange);transition:width .25s ease}
nav.menu a:hover{color:var(--ink)}
nav.menu a:hover::after,nav.menu a.active::after{width:100%}
nav.menu a.active{color:var(--ink);font-weight:700}
.nav-cta{background:var(--orange);color:#fff;font-weight:600;font-size:14px;padding:10px 20px;border-radius:999px;transition:background .2s;white-space:nowrap}
.nav-cta:hover{background:var(--orange-deep)}
.menu-toggle{display:none;background:none;border:none;font-size:26px;color:var(--ink);cursor:pointer}

/* 页面标题横幅（内页用） */
.page-head{background:var(--tint);border-bottom:1px solid var(--line);padding:56px 0}
.page-head h1{font-size:clamp(28px,3.6vw,40px);font-weight:800;letter-spacing:.02em;display:flex;align-items:center;gap:16px}
.page-head p{color:var(--muted);margin-top:10px;max-width:44em;font-size:15.5px}
.crumb{font-size:13px;color:var(--orange-deep);letter-spacing:.18em;text-transform:uppercase;font-weight:700;margin-bottom:14px}

/* 通用元素 */
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:600;letter-spacing:.22em;color:var(--orange-deep);text-transform:uppercase;margin-bottom:20px}
.eyebrow::before{content:"";width:26px;height:3px;background:var(--orange);border-radius:2px}
.btn{display:inline-block;padding:14px 30px;border-radius:999px;font-weight:700;font-size:15px;transition:transform .15s,background .2s,box-shadow .2s}
.btn:active{transform:scale(.97)}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 6px 20px rgba(232,89,12,.28)}
.btn-primary:hover{background:var(--orange-deep)}
.btn-ghost{border:2px solid var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--paper)}
section{padding:76px 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;flex-wrap:wrap}
.sec-title{display:flex;align-items:center;gap:16px}
.sec-chip{flex:none;min-width:52px;height:52px;padding:0 16px;background:var(--orange);color:#fff;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:800;letter-spacing:.14em}
.sec-title h2{font-size:clamp(24px,3vw,32px);font-weight:800;letter-spacing:.02em}
.sec-title .sub{font-size:14px;color:var(--muted);letter-spacing:.1em;margin-top:2px}
.sec-more{font-size:14px;font-weight:600;color:var(--orange-deep);white-space:nowrap}
.sec-more:hover{text-decoration:underline}

/* 卡片 */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card-grid.cols-4{grid-template-columns:repeat(4,1fr)}
.card-grid.cols-2{grid-template-columns:repeat(2,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;display:flex;flex-direction:column;gap:14px;transition:transform .2s ease,box-shadow .2s ease,border-color .2s}
.card:hover{transform:translateY(-5px);box-shadow:0 16px 36px rgba(36,31,25,.10);border-color:#F3C9A6}
.card .chip{width:auto;min-width:46px;height:42px;padding:0 14px;align-self:flex-start;background:var(--tint);color:var(--orange-deep);border-radius:11px;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:800;letter-spacing:.1em}
.card h3{font-size:19px;font-weight:800}
.card .tagline{font-size:12.5px;color:var(--orange-deep);font-weight:700;letter-spacing:.08em;margin-top:-8px}
.card p{font-size:14.5px;color:var(--muted);flex:1}
.card ul{list-style:none;font-size:13.5px;color:#4A4138;display:flex;flex-direction:column;gap:6px}
.card ul li::before{content:"·";color:var(--orange);font-weight:900;margin-right:8px}
.card a.more{font-size:14px;font-weight:700;color:var(--orange-deep)}
.card a.more:hover{text-decoration:underline}
.card.featured{border:2px solid var(--orange);position:relative}
.card.featured::before{content:"特色项目";position:absolute;top:-12px;left:24px;background:var(--orange);color:#fff;font-size:12px;font-weight:700;padding:2px 12px;border-radius:999px;letter-spacing:.1em}

/* 步骤 */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;counter-reset:step}
.steps.cols-4{grid-template-columns:repeat(4,1fr)}
.step{border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;background:#fff;position:relative}
.step::before{counter-increment:step;content:counter(step,decimal-leading-zero);font-family:Georgia,serif;font-style:italic;font-size:15px;font-weight:700;color:var(--orange);display:inline-block;margin-bottom:12px;border-bottom:2px solid var(--orange);padding-bottom:4px}
.step h3{font-size:16.5px;font-weight:800;margin-bottom:8px}
.step p{font-size:13.5px;color:var(--muted)}
.steps-dark .step{background:#2C2620;border-color:#3B342C}
.steps-dark .step h3{color:#fff}
.steps-dark .step p{color:#C9BEB0}

/* 深色区块 */
.dark{background:var(--ink);color:#F5EFE7}
.dark .sec-title h2{color:#fff}
.dark .sec-title .sub{color:#B7AB9C}

/* 事实块 */
.facts{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.fact{background:var(--tint);border-radius:var(--radius);padding:24px 22px}
.fact .num{font-size:28px;font-weight:800;color:var(--orange-deep);line-height:1.2}
.fact .lbl{font-size:13.5px;color:#7A5A3C;margin-top:4px}

/* 学校卡 */
.school{border:1px solid var(--line);border-radius:var(--radius);background:#fff;padding:26px}
.school .loc{font-size:12px;letter-spacing:.2em;color:var(--orange-deep);font-weight:700;text-transform:uppercase;margin-bottom:8px}
.school h3{font-size:18px;font-weight:800;margin-bottom:6px}
.school p{font-size:14px;color:var(--muted)}

/* 目的地条 */
.dest-row{display:flex;gap:14px;flex-wrap:wrap}
.dest{border:1px solid var(--line);background:#fff;border-radius:999px;padding:10px 22px;font-size:14.5px;font-weight:600;display:flex;align-items:center;gap:8px}
.dest.primary{background:var(--orange);border-color:var(--orange);color:#fff}
.dest .dot{width:8px;height:8px;border-radius:50%;background:var(--orange)}
.dest.primary .dot{background:#fff}

/* FAQ */
.faq{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;padding:20px 0;font-size:16.5px;font-weight:700;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:22px;color:var(--orange);font-weight:400;flex:none}
.faq[open] summary::after{content:"−"}
.faq .a{padding:0 0 20px;color:var(--muted);font-size:15px;max-width:52em}

/* 联系卡 */
.contact-band{background:var(--orange);color:#fff}
.contact-inner{display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:center}
.contact-band h2{font-size:clamp(26px,3.4vw,38px);font-weight:800;line-height:1.35;margin-bottom:14px}
.contact-band p{opacity:.92;font-size:16px;max-width:30em}
.contact-card{background:#fff;color:var(--ink);border-radius:20px;padding:34px 32px;box-shadow:0 20px 50px rgba(120,45,0,.35)}
.contact-card h3{font-size:18px;font-weight:800;margin-bottom:18px}
.contact-card ul{list-style:none;display:flex;flex-direction:column;gap:14px;font-size:15px}
.contact-card ul b{display:inline-block;min-width:5em;color:var(--muted);font-weight:600}
.contact-card .btn{margin-top:22px;width:100%;text-align:center}

/* Footer */
footer{background:#1B1712;color:#A79B8C;font-size:13.5px;padding:44px 0 30px}
.foot-grid{display:flex;justify-content:space-between;gap:32px;flex-wrap:wrap;margin-bottom:30px}
.foot-brand{display:flex;align-items:center;gap:10px;color:#F0E9DF;font-weight:700;font-size:16px}
.foot-brand .logo-block{width:34px;height:34px;font-size:12px;border-radius:8px}
.foot-links{display:flex;gap:24px;flex-wrap:wrap}
.foot-links a:hover{color:#fff}
.beian{border-top:1px solid #332C24;padding-top:20px;text-align:center;font-size:12.5px;color:#7A6F62;line-height:2}
.beian a{color:#7A6F62}
.beian a:hover{color:#C9BEB0}

/* Hero（首页） */
.hero{padding:72px 0 88px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
h1.hero-title{font-size:clamp(34px,4.6vw,52px);font-weight:800;line-height:1.28;letter-spacing:.01em;margin-bottom:22px}
h1.hero-title .hl{color:var(--orange)}
.hero p.lead{font-size:17px;color:var(--muted);max-width:34em;margin-bottom:34px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-panel{background:var(--orange);border-radius:24px;color:#fff;padding:40px 36px;position:relative;box-shadow:0 24px 60px rgba(181,71,8,.30)}
.hero-panel::after{content:"Easy";position:absolute;top:-16px;right:-16px;background:#fff;color:var(--orange);font-family:Georgia,serif;font-style:italic;font-weight:800;font-size:16px;width:58px;height:58px;border-radius:14px;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 20px rgba(36,31,25,.15)}
.hero-panel h2{font-size:20px;font-weight:800;letter-spacing:.06em;margin-bottom:22px}
.panel-list{list-style:none;display:flex;flex-direction:column;gap:16px}
.panel-list li{display:flex;gap:14px;align-items:flex-start;font-size:15px;line-height:1.6}
.panel-list .tag{flex:none;background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.35);border-radius:8px;min-width:34px;height:30px;padding:0 10px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:11px;letter-spacing:.1em;margin-top:3px}
.panel-list b{display:block;font-size:15.5px}
.panel-list span{opacity:.88;font-size:13.5px}

/* 内页正文排版 */
.prose p{color:var(--muted);font-size:15.5px;margin-bottom:16px;max-width:52em}
.prose p b{color:var(--ink)}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}

/* 响应式 */
@media (max-width:960px){
  .card-grid,.card-grid.cols-4{grid-template-columns:repeat(2,1fr)}
  .steps,.steps.cols-4{grid-template-columns:repeat(2,1fr)}
  .hero-grid,.two-col,.contact-inner{grid-template-columns:1fr;gap:40px}
}
@media (max-width:680px){
  nav.menu{display:none;position:absolute;top:72px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);flex-direction:column;gap:0;padding:8px 24px 16px}
  nav.menu.open{display:flex}
  nav.menu a{padding:12px 0;border-bottom:1px solid var(--line)}
  nav.menu a:last-child{border-bottom:none}
  .menu-toggle{display:block}
  .nav-cta{display:none}
  .card-grid,.card-grid.cols-4,.steps,.steps.cols-4{grid-template-columns:1fr}
  section{padding:60px 0}
  .hero{padding:52px 0 64px}
  .facts{grid-template-columns:1fr}
}