:root{
  --paper:#f6f1e7; --card:#fffdf7; --ink:#2c2620; --ink2:#6f6455;
  --accent:#a44a24; --accent-soft:#f3e2d3; --line:#e2d7c3; --gold:#b8862f;
  --shadow:0 10px 30px rgba(60,45,25,.10);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--paper);color:var(--ink);font-family:"Noto Sans SC",-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.75}
h1,h2,h3{font-family:"Noto Serif SC","Songti SC",serif}
.pc-only{display:none}
@media(min-width:760px){.pc-only{display:inline}}

/* hero */
.hero{background:linear-gradient(180deg,#2e2a24,#3a332a 55%,#4a3f30);color:#f3ead9;text-align:center;padding:76px 20px 0;overflow:hidden}
.hero-kicker{letter-spacing:.5em;font-size:13px;color:#cdbb96}
.hero-inner{max-width:860px;margin:0 auto}
.hero h1{font-size:64px;font-weight:900;letter-spacing:.12em;margin:14px 0 10px}
.hero-sub{font-size:17px;color:#e6dcc6;max-width:680px;margin:0 auto}
.hero-sub strong{color:#f0b429}
.hero-stats{margin:26px 0 8px;font-size:14px;color:#bfb198;display:flex;gap:10px;justify-content:center;flex-wrap:wrap;align-items:center}
.hero-stats strong{color:#fff;font-size:18px}
.hero-stats i{font-style:normal;opacity:.5}
.hero-cta{margin:22px 0 40px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.hero-covers{display:flex;gap:14px;justify-content:center;align-items:flex-end;opacity:.95}
.hero-covers img{width:86px;height:120px;object-fit:cover;border-radius:4px 4px 0 0;box-shadow:0 -6px 24px rgba(0,0,0,.35);transform:translateY(14px)}
.hero-covers img:nth-child(odd){transform:translateY(26px)}
@media(max-width:640px){.hero h1{font-size:44px}.hero-covers img{width:56px;height:78px}}

/* buttons */
.btn{display:inline-block;border:1px solid var(--accent);border-radius:999px;padding:12px 30px;font-size:16px;cursor:pointer;text-decoration:none;transition:.2s;background:transparent;color:var(--accent)}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:#8c3d1e}
.btn-ghost:hover{background:var(--accent-soft)}
.hero .btn-ghost{border-color:#cdbd97;color:#f3ead9}
.hero .btn-ghost:hover{background:rgba(255,255,255,.08)}
.btn-small{padding:7px 18px;font-size:14px}

/* sections */
.section{max-width:1020px;margin:0 auto;padding:72px 20px}
.section-alt{max-width:none;background:var(--paper)}
.section-alt>*{max-width:1020px;margin-left:auto;margin-right:auto}
.section-head{text-align:center;margin-bottom:36px}
.kicker{letter-spacing:.45em;font-size:12px;color:var(--accent);margin-bottom:8px}
.section-head h2,.about h2{font-size:32px;font-weight:900}
.section-sub{color:var(--ink2);max-width:640px;margin:10px auto 0;font-size:15px}

/* quiz */
.quiz-card{background:var(--card);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);padding:34px 30px;max-width:720px;margin:0 auto}
.quiz-progress{display:flex;gap:8px;margin-bottom:22px}
.quiz-progress span{flex:1;height:5px;border-radius:3px;background:var(--line)}
.quiz-progress span.on{background:var(--accent)}
.quiz-q{font-size:23px;margin-bottom:20px}
.quiz-opts{display:grid;gap:12px}
.quiz-opt{text-align:left;background:#fbf7ee;border:1.5px solid var(--line);border-radius:12px;padding:15px 18px;font-size:16px;cursor:pointer;font-family:inherit;color:var(--ink);transition:.15s;width:100%}
.quiz-opt:hover{border-color:var(--accent);background:var(--accent-soft)}
.quiz-opt small{display:block;color:var(--ink2);font-size:13px;margin-top:2px}
.quiz-nav{display:flex;justify-content:space-between;align-items:center;margin-top:22px}
.quiz-nav .btn-ghost{border-color:var(--line);color:var(--ink2)}
.quiz-step{color:var(--ink2);font-size:13px}

/* result */
.result{max-width:760px;margin:44px auto 0}
.result-head{text-align:center}
.result-head h3{font-size:27px;margin:6px 0}
.result-echo{color:var(--ink2);font-size:15px}
.framework-card{background:#2e2a24;color:#f3ead9;border-radius:14px;padding:22px 26px;margin:26px 0}
.framework-label{font-size:12px;letter-spacing:.35em;color:#c9a86a;margin-bottom:6px}
.framework-text{font-size:18px;font-family:"Noto Serif SC",serif}
.ladder{display:grid;gap:18px}
.step{display:flex;gap:18px;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:20px;box-shadow:var(--shadow);position:relative}
.step:nth-child(2){margin-left:0}
@media(min-width:760px){.step:nth-child(2){margin-left:34px}.step:nth-child(3){margin-left:68px}}
.step img{width:92px;height:128px;object-fit:cover;border-radius:6px;flex:none;background:#e8dfcd}
.step-body{flex:1;min-width:0}
.step-top{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-bottom:4px}
.step-no{font-size:12px;color:#fff;background:var(--accent);border-radius:999px;padding:2px 10px}
.badge{font-size:12px;border:1px solid var(--gold);color:var(--gold);border-radius:999px;padding:1px 9px}
.badge.start{background:var(--gold);color:#fff;border-color:var(--gold)}
.badge.done{border-color:#7a9a5b;color:#5c7a41}
.step h4{font-size:19px;font-family:"Noto Serif SC",serif}
.step-author{color:var(--ink2);font-size:13px}
.step-desc{font-size:15px;margin:6px 0}
.step-take{font-size:14px;background:#fbf4e4;border-left:3px solid var(--gold);padding:8px 12px;border-radius:0 8px 8px 0}
.step-take b{color:var(--gold)}
.step-foot{margin-top:10px;display:flex;gap:12px;align-items:center}
.diff{font-size:12px;color:var(--ink2)}
.diff b{color:var(--accent);letter-spacing:2px}
.read-link{font-size:14px;color:var(--accent);text-decoration:none;border-bottom:1px solid var(--accent)}
.safety-note{background:#fdf0ec;border:1px solid #e5b4a4;color:#7c3a26;border-radius:12px;padding:16px 20px;margin-top:22px;font-size:14px}
.result-actions{margin-top:28px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* schools */
.schools{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:16px}
.school{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px 22px}
.school h4{font-size:18px;margin-bottom:4px}
.school .rep{color:var(--accent);font-size:13px;margin-bottom:8px}
.school p{font-size:14px;color:var(--ink)}
.school p b{color:var(--ink)}
.school .cant{color:var(--ink2)}

/* library */
.filters{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-bottom:28px}
.chip{border:1.5px solid var(--line);background:var(--card);border-radius:999px;padding:7px 18px;font-size:14px;cursor:pointer;font-family:inherit;color:var(--ink)}
.chip.on{background:var(--accent);border-color:var(--accent);color:#fff}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(215px,1fr));gap:18px}
.book{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px;display:flex;flex-direction:column;gap:6px;transition:.15s}
.book:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.book img{width:100%;height:190px;object-fit:cover;border-radius:8px;background:#e8dfcd}
.book h4{font-size:16px;font-family:"Noto Serif SC",serif;line-height:1.45}
.book .author{font-size:12px;color:var(--ink2)}
.book .desc{font-size:13px;color:var(--ink);flex:1}
.book .meta{display:flex;gap:6px;flex-wrap:wrap}
.book .read-link{align-self:flex-start}

/* about + footer */
.about{max-width:720px;text-align:left}
.about h2{margin-bottom:14px}
.about p{margin-bottom:12px;color:#453c31}
.about-sign{color:var(--accent);font-family:"Noto Serif SC",serif}
.crosslink{max-width:720px;margin:0 auto;padding:0 20px 64px;text-align:center}
.crosslink-label{letter-spacing:.45em;font-size:12px;color:var(--accent);margin-bottom:10px}
.crosslink-text{color:var(--ink2);font-size:15px;max-width:520px;margin:0 auto 16px}
.crosslink-btn{display:inline-block;border:1.5px solid var(--accent);color:var(--accent);border-radius:999px;padding:10px 26px;text-decoration:none;font-size:15px;transition:.2s;background:var(--card)}
.crosslink-btn:hover{background:var(--accent-soft)}
footer{background:#2e2a24;color:#bfb198;text-align:center;padding:36px 20px;font-size:13px}
footer p{margin:4px 0}
.foot-small{opacity:.6;font-size:12px}