@font-face{font-family:"Montserrat";src:url(fonts/Montserrat-Regular.woff) format("woff");font-weight:400;font-display:swap}
@font-face{font-family:"Montserrat";src:url(fonts/Montserrat-SemiBold.woff) format("woff");font-weight:600;font-display:swap}
@font-face{font-family:"Montserrat";src:url(fonts/Montserrat-Bold.woff) format("woff");font-weight:700;font-display:swap}
:root{--ink:#1d2a3a;--paper:#fbf8f3;--card:#fff;--accent:#b5482c;--teal:#2f5d62;--muted:#5d6876;--line:#e6dfd3;
--sans:"Montserrat","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
--serif:"Noto Serif SC","Songti SC","STSong","SimSun",Georgia,serif}
*{box-sizing:border-box}
html,body{margin:0;overflow-x:hidden}
body{background:var(--paper);color:var(--ink);font:16px/1.85 var(--sans)}
img{max-width:100%;height:auto;display:block}
a{color:var(--teal)}
a:hover{color:var(--accent)}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}

/* header */
.site-head{background:var(--paper);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.site-head .wrap{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;height:72px}
.brand img{height:24px;width:auto}
.nav-toggle{display:none}
.burger{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:6px;cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:5px;background:#fff}
.burger span{display:block;width:20px;height:2px;background:var(--ink)}
.main-nav ul{list-style:none;margin:0;padding:0;display:flex;gap:4px}
.main-nav a{display:block;padding:8px 14px;text-decoration:none;color:var(--ink);font-size:15px;border-radius:4px}
.main-nav a:hover,.main-nav a.cur{color:var(--accent);background:#f3ece1}

/* hero */
.hero{position:relative;color:#fff;background:#24303f url(../img/hero-students.jpg) center 35%/cover no-repeat}
.hero:before{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(23,33,46,.92) 0%,rgba(23,33,46,.78) 48%,rgba(23,33,46,.25) 100%)}
.hero .wrap{position:relative;padding-top:96px;padding-bottom:96px}
.hero .kicker{font-size:13px;letter-spacing:.18em;text-transform:uppercase;color:#e9a48f;font-weight:600}
.hero h1{font-family:var(--serif);font-size:44px;line-height:1.3;margin:14px 0 18px;max-width:640px;font-weight:700}
.hero p{max-width:560px;font-size:17px;color:#e3e7ec;margin:0 0 28px}
.btn{display:inline-block;background:var(--accent);color:#fff;text-decoration:none;padding:12px 26px;border-radius:4px;font-weight:600}
.btn:hover{background:#963a23;color:#fff}
.btn.ghost{background:transparent;border:1px solid rgba(255,255,255,.6);margin-left:10px}

/* sections */
.section{padding:72px 0}
.section.alt{background:#f3ece1}
.section h2{font-family:var(--serif);font-size:30px;margin:0 0 10px}
.section .lead{color:var(--muted);max-width:720px;margin:0 0 36px}
.intro{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.intro p{margin:0 0 16px}
.intro figure{margin:0}
.intro figure img{border-radius:6px;aspect-ratio:4/3;object-fit:cover;width:100%}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.card{background:var(--card);border:1px solid var(--line);border-radius:6px;overflow:hidden;display:flex;flex-direction:column}
.card img{aspect-ratio:500/275;object-fit:cover;width:100%;background:#eef2f6}
.card .body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1}
.card .tag{font-size:12px;color:var(--accent);font-weight:600;letter-spacing:.06em}
.card h3{font-family:var(--serif);font-size:19px;line-height:1.5;margin:6px 0 10px}
.card h3 a{color:var(--ink);text-decoration:none}
.card h3 a:hover{color:var(--accent)}
.card p{font-size:14.5px;color:var(--muted);margin:0 0 14px;flex:1}
.card .more{font-size:14px;font-weight:600;text-decoration:none}
.stages{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:2px solid var(--ink)}
.stage{padding:26px 28px 10px 0}
.stage+.stage{padding-left:28px;border-left:1px solid var(--line)}
.stage h3{font-family:var(--serif);font-size:20px;margin:0 0 8px}
.stage p{color:var(--muted);font-size:15px;margin:0 0 12px}
.styles-table{width:100%;border-collapse:collapse;background:#fff;font-size:15px}
.styles-table th,.styles-table td{border:1px solid var(--line);padding:12px 14px;text-align:left;vertical-align:top}
.styles-table th{background:#f3ece1;font-weight:600}

/* page / article */
.page-head{background:#f3ece1;border-bottom:1px solid var(--line);padding:44px 0 36px}
.crumbs{font-size:13px;color:var(--muted)}
.crumbs a{color:var(--muted)}
.page-head h1{font-family:var(--serif);font-size:34px;line-height:1.4;margin:10px 0 0;max-width:860px}
.layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:56px;padding:48px 0 72px}
.article{background:#fff;border:1px solid var(--line);border-radius:6px;padding:40px 48px}
.article .cover{margin:0 0 28px}
.article .cover img{width:100%;border-radius:4px}
.article h2{font-family:var(--serif);font-size:24px;line-height:1.5;margin:36px 0 12px;padding-left:14px;border-left:4px solid var(--accent)}
.article h3{font-size:18px;margin:26px 0 8px}
.article p{margin:0 0 16px}
.article ul,.article ol{padding-left:1.4em;margin:0 0 18px}
.article li{margin-bottom:6px}
.article figure{margin:26px 0}
.article figure img{border-radius:4px;max-height:460px;width:100%;object-fit:cover}
.article table{width:100%;border-collapse:collapse;margin:0 0 20px;font-size:15px;display:block;overflow-x:auto}
.article td,.article th{border:1px solid var(--line);padding:9px 12px;vertical-align:top}
.article blockquote{margin:0 0 18px;padding:14px 20px;background:#f7f2ea;border-left:3px solid var(--teal)}
.side h4{font-family:var(--serif);font-size:17px;margin:0 0 12px;padding-bottom:8px;border-bottom:2px solid var(--ink)}
.side ul{list-style:none;margin:0 0 32px;padding:0}
.side li{border-bottom:1px solid var(--line)}
.side li a{display:block;padding:10px 0;color:var(--ink);text-decoration:none;font-size:14.5px;line-height:1.6}
.side li a:hover,.side li a.cur{color:var(--accent)}
.side .note{background:#fff;border:1px solid var(--line);border-radius:6px;padding:18px 20px;font-size:14px;color:var(--muted)}
.related{margin-top:8px}
.form{display:grid;gap:14px;max-width:560px}
.form label{font-size:14px;font-weight:600}
.form input,.form textarea{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:4px;font:inherit;background:#fff}
.form textarea{min-height:150px}
.form button{justify-self:start;border:0;cursor:pointer;font:inherit}

/* footer */
.site-foot{background:var(--ink);color:#c5ccd5;padding:52px 0 28px;font-size:14.5px}
.site-foot .cols{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:40px}
.site-foot img{height:20px;width:auto;margin-bottom:14px}
.site-foot h5{color:#fff;font-size:15px;margin:0 0 12px}
.site-foot ul{list-style:none;padding:0;margin:0}
.site-foot li{margin-bottom:6px}
.site-foot a{color:#c5ccd5;text-decoration:none}
.site-foot a:hover{color:#fff}
.site-foot .copy{border-top:1px solid #33435a;margin-top:36px;padding-top:18px;font-size:13px;color:#8d99a8}

@media (max-width:980px){
 .cards{grid-template-columns:repeat(2,1fr)}
 .layout{grid-template-columns:1fr;gap:36px}
 .intro{grid-template-columns:1fr;gap:28px}
}
@media (max-width:760px){
 .burger{display:flex}
 .main-nav{display:none;position:absolute;left:0;right:0;top:72px;background:var(--paper);border-bottom:1px solid var(--line);box-shadow:0 10px 20px rgba(0,0,0,.06)}
 .nav-toggle:checked~.main-nav{display:block}
 .main-nav ul{flex-direction:column;padding:8px 16px 16px}
 .main-nav a{padding:12px 8px;border-bottom:1px solid var(--line);border-radius:0}
 .hero .wrap{padding-top:64px;padding-bottom:64px}
 .hero h1{font-size:30px}
 .btn.ghost{margin:12px 0 0}
 .cards,.stages,.site-foot .cols{grid-template-columns:1fr}
 .stage,.stage+.stage{padding:20px 0 6px;border-left:0;border-bottom:1px solid var(--line)}
 .article{padding:24px 18px}
 .page-head h1{font-size:25px}
 .section{padding:52px 0}
}