:root{
  --ink:#0e1b20;--ink2:#243840;
  --teal:#1a1f3a;--teal2:#252b4a;--teal3:#e8eef6;
  --gold:#c8a94a;--gold2:#d4a030;--gold3:#fdf6e8;
  --cream:#f9f6f1;--warm:#f2ede4;--border:#e3ddd3;
  --muted:#6b7a7e;--white:#fff;--r:12px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Noto Sans SC',sans-serif;background:var(--cream);color:var(--ink);line-height:1.7}

/* NAV */
nav{background:var(--teal);border-bottom:1px solid rgba(200,169,74,.2);position:sticky;top:0;z-index:200}
.nav-w{max-width:1100px;margin:0 auto;padding:0 1.5rem;height:58px;display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;align-items:center;gap:9px;text-decoration:none}
.logo-sq{width:34px;height:34px;background:linear-gradient(135deg,var(--teal),var(--teal2));border-radius:8px;display:flex;align-items:center;justify-content:center;color:#fff;font-family:'Playfair Display',serif;font-size:16px;font-weight:700}
.logo-main{font-size:13.5px;font-weight:600;color:#fff}
.logo-sub{font-size:10px;color:rgba(255,255,255,.45)}
.nav-right{display:flex;align-items:center;gap:1rem}
.nav-right a{font-size:13px;color:rgba(255,255,255,.75);text-decoration:none}
.nav-right a:hover{color:var(--gold)}
.nav-btn{background:var(--gold2);color:var(--ink)!important;padding:7px 16px;border-radius:7px;font-size:13px;font-weight:600}

/* BREADCRUMB */
.breadcrumb{max-width:1100px;margin:0 auto;padding:14px 1.5rem;font-size:12px;color:var(--muted);display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.breadcrumb a{color:var(--muted);text-decoration:none}
.breadcrumb a:hover{color:var(--teal)}

/* COURSE HERO */
.course-hero{background:linear-gradient(135deg,#0f1225 0%,#1a1f3a 50%,#252b4a 100%);color:#fff;padding:52px 1.5rem 60px;position:relative;overflow:hidden}
.course-hero-dots{position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.05) 1px,transparent 1px);background-size:24px 24px}
.course-hero-w{max-width:1100px;margin:0 auto;display:grid;grid-template-columns:1fr 300px;gap:48px;align-items:start;position:relative}
.ch-eyebrow{font-size:11px;font-weight:600;color:rgba(255,255,255,.6);text-transform:uppercase;letter-spacing:.14em;margin-bottom:10px}
.ch-h1{font-family:'Playfair Display',serif;font-size:40px;color:#fff;line-height:1.15;margin-bottom:8px}
.ch-en{font-size:16px;color:rgba(255,255,255,.6);font-weight:300;letter-spacing:.04em;margin-bottom:18px}
.ch-tags{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:22px}
.ch-tag{font-size:11.5px;padding:4px 12px;border-radius:100px;border:1px solid rgba(255,255,255,.25);color:rgba(255,255,255,.8)}
.ch-tag-gold{background:rgba(212,160,48,.2);border-color:rgba(212,160,48,.5);color:#ffe08a}
.ch-desc{font-size:14.5px;color:rgba(255,255,255,.82);line-height:1.82;max-width:560px;margin-bottom:28px}
.ch-stats{display:flex;gap:28px;flex-wrap:wrap;margin-bottom:32px}
.ch-stat-n{font-family:'Playfair Display',serif;font-size:28px;color:#ffe08a;line-height:1}
.ch-stat-l{font-size:11px;color:rgba(255,255,255,.55);margin-top:3px}
.ch-btns{display:flex;gap:10px;flex-wrap:wrap}
.btn-gold{background:var(--gold2);color:var(--ink);padding:12px 26px;border-radius:9px;font-size:14px;font-weight:700;text-decoration:none;transition:all .2s;display:inline-flex;align-items:center;gap:6px}
.btn-gold:hover{background:#e8b840;transform:translateY(-1px)}
.btn-ghost{background:transparent;color:#fff;padding:11px 20px;border-radius:9px;font-size:14px;border:1.5px solid rgba(255,255,255,.35);text-decoration:none;transition:all .2s}
.btn-ghost:hover{background:rgba(255,255,255,.1)}

/* HERO QUICK CARD */
.ch-qcard{background:rgba(255,255,255,.1);backdrop-filter:blur(14px);border:1px solid rgba(255,255,255,.18);border-radius:16px;padding:22px}
.ch-qcard-title{font-size:11px;text-transform:uppercase;letter-spacing:.1em;color:rgba(255,255,255,.55);margin-bottom:14px}
.qrow{display:flex;justify-content:space-between;align-items:center;padding:9px 0;border-bottom:1px solid rgba(255,255,255,.1)}
.qrow:last-of-type{border-bottom:none}
.qrow-k{font-size:12.5px;color:rgba(255,255,255,.6)}
.qrow-v{font-size:13px;font-weight:600;color:#fff}
.qrow-v.gold{color:#ffe08a}
.qcard-cta{margin-top:16px;background:var(--gold2);color:var(--ink);border-radius:9px;padding:12px;text-align:center;font-size:13.5px;font-weight:700;text-decoration:none;display:block;transition:background .2s}
.qcard-cta:hover{background:#e8b840}

/* MAIN LAYOUT */
.course-body{max-width:1100px;margin:0 auto;padding:40px 1.5rem 64px;display:grid;grid-template-columns:1fr 300px;gap:48px;align-items:start}

/* TABS */
.tabs{display:flex;gap:0;margin-bottom:32px;border-bottom:2px solid var(--border);overflow-x:auto}
.tab{padding:11px 20px;font-size:14px;font-weight:500;color:var(--muted);cursor:pointer;white-space:nowrap;border-bottom:2px solid transparent;margin-bottom:-2px;transition:all .18s}
.tab:hover{color:var(--teal)}
.tab.on{color:var(--teal);border-bottom-color:var(--teal);font-weight:600}
.tab-panel{display:none}
.tab-panel.on{display:block}

/* CONTENT SECTIONS */
.content-block{margin-bottom:36px}
.content-block h2{font-family:'Playfair Display',serif;font-size:22px;color:var(--ink);margin-bottom:16px;padding-bottom:10px;border-bottom:2px solid var(--teal3)}
.content-block h3{font-size:16px;font-weight:600;color:var(--ink);margin:20px 0 10px}
.content-block p{font-size:14px;color:var(--ink2);line-height:1.85;margin-bottom:12px}
.content-block ul{margin:10px 0 14px 18px}
.content-block li{font-size:14px;color:var(--ink2);line-height:1.8;margin-bottom:6px}

/* INFO CARDS */
.info-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:28px}
.info-card{background:var(--white);border:1px solid var(--border);border-radius:var(--r);padding:18px}
.info-card-ico{font-size:22px;margin-bottom:8px}
.info-card-label{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;margin-bottom:4px}
.info-card-val{font-size:18px;font-weight:700;color:var(--teal);font-family:'Playfair Display',serif;line-height:1.2}
.info-card-sub{font-size:12px;color:var(--muted);margin-top:4px}

/* REQUIREMENT TABLE */
.req-table{width:100%;border-collapse:collapse;font-size:13.5px;margin-bottom:20px}
.req-table th{background:var(--teal);color:#fff;padding:10px 14px;text-align:left;font-weight:500;font-size:12px}
.req-table td{padding:10px 14px;border-bottom:1px solid var(--border)}
.req-table tr:nth-child(even) td{background:var(--warm)}
.req-pass{color:#1a8c4e;font-weight:700}
.req-warn{color:#c87000;font-weight:700}

/* MODULES LIST */
.modules-list{display:flex;flex-direction:column;gap:10px;margin-bottom:20px}
.module-item{background:var(--white);border:1px solid var(--border);border-radius:var(--r);padding:14px 18px;display:flex;align-items:center;justify-content:space-between}
.module-name{font-size:14px;font-weight:500;color:var(--ink)}
.module-en{font-size:11.5px;color:var(--muted);margin-top:2px}
.module-badge{font-size:11px;padding:3px 9px;border-radius:100px;font-weight:500;flex-shrink:0}
.badge-core{background:var(--teal3);color:var(--teal)}
.badge-elective{background:var(--warm);color:var(--muted);border:1px solid var(--border)}

/* SCHOLARSHIP CALC */
.schol-calc{background:var(--gold3);border:1px solid #e0c870;border-radius:var(--r);padding:22px;margin-bottom:20px}
.schol-calc h3{font-size:15px;font-weight:600;color:var(--ink);margin-bottom:16px}
.calc-row{display:flex;justify-content:space-between;font-size:13.5px;padding:8px 0;border-bottom:1px dashed #e0c870}
.calc-row:last-of-type{border-bottom:none;font-weight:700;font-size:15px;color:var(--teal);margin-top:4px}
.calc-row span:first-child{color:var(--ink2)}

/* CAREER TAGS */
.career-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
.career-tag{font-size:12.5px;padding:5px 13px;background:var(--white);border:1px solid var(--border);border-radius:100px;color:var(--ink2)}

/* APPLY STEPS */
.apply-steps{display:flex;flex-direction:column;gap:14px;margin-bottom:24px}
.astep{display:flex;gap:14px;align-items:flex-start}
.astep-n{width:32px;height:32px;background:var(--teal);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:14px;flex-shrink:0}
.astep-body h4{font-size:14px;font-weight:600;color:var(--ink);margin-bottom:3px}
.astep-body p{font-size:13px;color:var(--muted);line-height:1.65}

/* TEAL BOX */
.teal-box{background:var(--teal3);border:1px solid rgba(26,68,128,.18);border-radius:var(--r);padding:16px 20px;margin-bottom:20px;font-size:13.5px;color:var(--ink2);line-height:1.75}
.teal-box strong{color:var(--teal)}

/* SIDEBAR */
.course-sidebar{position:sticky;top:78px;display:flex;flex-direction:column;gap:16px}
.sb-card{background:var(--white);border:1px solid var(--border);border-radius:var(--r);padding:20px}
.sb-card h4{font-size:13px;font-weight:600;color:var(--ink);margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid var(--border)}
.sb-cta{background:linear-gradient(135deg,#0c1f3f,var(--teal));border-radius:var(--r);padding:22px;text-align:center;color:#fff}
.sb-cta h4{font-size:15px;font-weight:600;color:#fff;border:none;padding:0;margin-bottom:8px}
.sb-cta p{font-size:12.5px;color:rgba(255,255,255,.75);line-height:1.6;margin-bottom:16px}
.sb-btn{display:block;background:var(--gold2);color:var(--ink);padding:11px;border-radius:8px;font-size:13.5px;font-weight:700;text-decoration:none;margin-bottom:8px;transition:background .2s}
.sb-btn:hover{background:#e8b840}
.sb-btn-ghost{display:block;background:rgba(255,255,255,.12);color:#fff;padding:10px;border-radius:8px;font-size:13px;text-decoration:none;border:1px solid rgba(255,255,255,.2);transition:background .2s;margin-bottom:8px}
.sb-btn-ghost:hover{background:rgba(255,255,255,.2)}
.sb-fact-row{display:flex;justify-content:space-between;font-size:13px;padding:8px 0;border-bottom:1px dashed var(--border)}
.sb-fact-row:last-child{border-bottom:none}
.sb-fact-k{color:var(--muted)}
.sb-fact-v{font-weight:600;color:var(--ink)}
.sb-deadline{background:var(--warm);border:1px solid var(--border);border-radius:8px;padding:12px 14px;font-size:12.5px;color:var(--ink2);line-height:1.7}
.sb-deadline strong{color:var(--teal)}

/* RELATED COURSES */
.related-section{max-width:1100px;margin:0 auto;padding:0 1.5rem 64px}
.related-section h2{font-size:22px;font-weight:600;color:var(--ink);margin-bottom:20px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.rel-card{background:var(--white);border:1px solid var(--border);border-radius:var(--r);padding:20px;text-decoration:none;transition:all .2s;display:block}
.rel-card:hover{border-color:var(--teal);transform:translateY(-2px);box-shadow:0 4px 16px rgba(26,68,128,.08)}
.rel-en{font-size:11px;color:var(--teal);font-weight:500;margin-bottom:5px}
.rel-name{font-size:15px;font-weight:600;color:var(--ink);margin-bottom:6px}
.rel-card:hover .rel-name{color:var(--teal)}
.rel-tags{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:10px}
.rel-tag{font-size:11px;padding:2px 8px;border-radius:100px;border:1px solid var(--border);color:var(--muted)}
.rel-fee{font-size:14px;font-weight:700;color:var(--teal)}

/* FOOTER */
footer{background:var(--ink2);color:rgba(255,255,255,.45);padding:28px 1.5rem;text-align:center;font-size:12.5px}
footer a{color:rgba(255,255,255,.55);text-decoration:none}
footer a:hover{color:#fff}

@media(max-width:860px){
  .course-hero-w,.course-body{grid-template-columns:1fr}
  .course-sidebar{position:static}
  .ch-h1{font-size:30px}
  .info-grid{grid-template-columns:1fr 1fr}
  .related-grid{grid-template-columns:1fr}
}

/* 来源角标 & 来源列表 */
.src{font-size:10px;color:var(--teal);vertical-align:super;font-weight:600;margin-left:1px;text-decoration:none}
.src:hover{text-decoration:underline}
.sources-bar{background:var(--warm);border-top:1px solid var(--border);padding:18px 1.5rem;font-size:12px;color:var(--muted)}
.sources-bar-w{max-width:1100px;margin:0 auto}
.sources-bar h3{font-size:11px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.1em;margin-bottom:10px}
.sources-bar ol{padding-left:16px;display:flex;flex-direction:column;gap:5px;line-height:1.65}
.sources-bar a{color:var(--teal)}

/* 30秒结论框 */
.quick-summary{background:var(--teal3);border:1px solid rgba(26,68,128,.18);border-radius:var(--r);padding:18px 22px;margin-bottom:28px}
.quick-summary h3{font-size:12px;font-weight:600;color:var(--teal);text-transform:uppercase;letter-spacing:.08em;margin-bottom:10px}
.quick-summary ul{list-style:none;display:flex;flex-direction:column;gap:6px}
.quick-summary li{font-size:13px;color:var(--ink2);display:flex;gap:8px;align-items:baseline}
.quick-summary li::before{content:'→';color:var(--teal);font-weight:700;flex-shrink:0}