/* ================================================================
   Campus · 课程子页共享样式
   配色：深靛蓝 + 琥珀 + 珊瑚 + 薄荷（与 index-campus.html 一致）
   ================================================================ */
:root{
  --bg:#FAFBFC;
  --card:#FFFFFF;
  --ink:#0B1320;
  --ink-2:#2C3648;
  --ink-3:#5A6578;
  --ink-4:#9099A8;
  --line:#E4E8EE;
  --line-2:#D2D8E0;
  --blue:#1B4ED8;
  --blue-2:#0A2BA0;
  --blue-soft:#E9EFFF;
  --coral:#FF6547;
  --amber:#FFB020;
  --mint:#0FB67C;

  --sans:"Manrope","Noto Sans SC",-apple-system,system-ui,sans-serif;
  --display:"Fraunces","Noto Serif SC",serif;
  --sc-serif:"Noto Serif SC",serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--sans);background:var(--bg);color:var(--ink);overflow-x:hidden;font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

/* ===== Top mini bar ===== */
.top-mini{background:var(--ink);color:#fff;font-size:12px;padding:8px 32px;display:flex;justify-content:space-between;letter-spacing:.02em}
.top-mini .left{display:flex;gap:20px;align-items:center;opacity:.85}
.top-mini .dot{width:6px;height:6px;border-radius:50%;background:var(--mint);box-shadow:0 0 6px var(--mint);display:inline-block;margin-right:6px}
.top-mini a{color:inherit;opacity:.85}
.top-mini a:hover{opacity:1}

/* ===== NAV ===== */
nav.main{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);padding:16px 32px;display:grid;grid-template-columns:auto 1fr auto;gap:32px;align-items:center}
.brand{display:flex;align-items:center;gap:14px}
.brand img{width:42px;height:42px;border-radius:50%;background:#fff;padding:2px;border:1px solid var(--line);object-fit:contain}
.brand .t{display:flex;flex-direction:column;line-height:1}
.brand .cn{font-family:var(--sc-serif);font-weight:700;font-size:17px;letter-spacing:.04em}
.brand .en{font-size:11.5px;color:var(--ink-3);margin-top:4px;letter-spacing:.06em;font-weight:500}
.nav-links{display:flex;justify-content:center;gap:4px}
.nav-links a{padding:9px 14px;border-radius:8px;font-size:14.5px;font-weight:500;color:var(--ink-2);transition:all .2s}
.nav-links a:hover,.nav-links a.active{background:var(--blue-soft);color:var(--blue)}
.nav-right{display:flex;gap:10px;align-items:center}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:8px;padding:11px 18px;border-radius:10px;font-weight:600;font-size:14px;transition:all .25s;cursor:pointer;border:none}
.btn .arr{transition:transform .3s}
.btn:hover .arr{transform:translateX(4px)}
.btn-blue{background:var(--blue);color:#fff}
.btn-blue:hover{background:var(--blue-2);box-shadow:0 8px 24px rgba(27,78,216,.24)}
.btn-outline{border:1.5px solid var(--line-2);color:var(--ink);background:transparent}
.btn-outline:hover{border-color:var(--ink);background:var(--ink);color:#fff}
.btn-dark-outline{border:1.5px solid rgba(255,255,255,.25);color:#fff;background:transparent}
.btn-dark-outline:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.5)}

.pill-b{display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:600;color:var(--blue);background:var(--blue-soft);padding:7px 14px;border-radius:999px;letter-spacing:.02em}
.pill-b::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--blue)}
.pill-amber{color:#8a6200;background:#FFF4D9}
.pill-amber::before{background:var(--amber)}
.pill-coral{color:#b83a22;background:#FFEDE8}
.pill-coral::before{background:var(--coral)}
.pill-mint{color:#0A8E5C;background:#E1F7EE}
.pill-mint::before{background:var(--mint)}

.wrap{max-width:1300px;margin:0 auto;padding:0 32px}

/* ===== HERO ===== */
.chero{padding:64px 0 80px;position:relative;overflow:hidden}
.chero-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:56px;align-items:center}
.chero h1{font-family:var(--display);font-weight:500;font-size:clamp(42px,5.6vw,72px);line-height:1.02;letter-spacing:-.025em;margin:18px 0;color:var(--ink);font-variation-settings:"opsz" 144}
.chero h1 .it{font-style:italic;font-weight:400;color:var(--blue)}
.chero h1 .hl{position:relative;display:inline-block}
.chero h1 .hl::after{content:"";position:absolute;left:0;right:0;bottom:4px;height:10px;background:var(--amber);opacity:.35;z-index:-1}
.chero .lede{font-size:17px;line-height:1.7;color:var(--ink-2);max-width:540px;margin-bottom:28px}
.chero-btns{display:flex;gap:12px;flex-wrap:wrap}

.chero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:40px;padding-top:28px;border-top:1px solid var(--line)}
.chero-stats .n{font-family:var(--display);font-weight:500;font-size:32px;line-height:1;letter-spacing:-.02em;color:var(--ink)}
.chero-stats .n em{font-style:italic;font-weight:400;color:var(--blue)}
.chero-stats .l{font-size:12px;color:var(--ink-3);margin-top:6px;font-weight:500}

/* Visual */
.chero-visual{position:relative;min-height:500px;display:flex;align-items:center;justify-content:center}
.orb{width:280px;height:280px;border-radius:50%;position:relative;display:flex;align-items:center;justify-content:center;background:radial-gradient(circle at 30% 30%,var(--blue-soft),transparent 65%),var(--card);border:1px solid var(--line);box-shadow:0 30px 60px -24px rgba(27,78,216,.25)}
.orb::before{content:"";position:absolute;inset:-18px;border-radius:50%;border:1px dashed rgba(27,78,216,.2);animation:rot 40s linear infinite}
.orb::after{content:"";position:absolute;inset:-36px;border-radius:50%;border:1px solid rgba(27,78,216,.08);animation:rot 60s linear infinite reverse}
@keyframes rot{to{transform:rotate(360deg)}}
.orb .orb-icon{width:92px;height:92px;color:var(--blue);display:flex;align-items:center;justify-content:center}

.ftag{position:absolute;background:#fff;border:1px solid var(--line);border-radius:14px;padding:12px 16px;display:flex;gap:10px;align-items:center;box-shadow:0 14px 32px -14px rgba(11,19,32,.22);animation:flt 6s ease-in-out infinite;z-index:2}
.ftag .ic{width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;flex-shrink:0;background:var(--blue-soft);color:var(--blue)}
.ftag .ic svg{width:18px;height:18px}
.ftag.c-amber .ic{background:#FFF4D9;color:#9C7A00}
.ftag.c-coral .ic{background:#FFEDE8;color:var(--coral)}
.ftag.c-mint .ic{background:#E1F7EE;color:var(--mint)}
.ftag.c-purple .ic{background:#F1E9FF;color:#6B3DCE}
.ftag .k{font-size:10.5px;color:var(--ink-4);font-weight:600;letter-spacing:.06em;text-transform:uppercase}
.ftag .v{font-size:13px;font-weight:700;color:var(--ink)}
.ftag.t1{top:8%;left:-8px;animation-delay:0s}
.ftag.t2{top:18%;right:-10px;animation-delay:1.4s}
.ftag.t3{bottom:16%;left:-20px;animation-delay:2.6s}
.ftag.t4{bottom:6%;right:-6px;animation-delay:.8s}
@keyframes flt{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}

/* ===== SECTIONS ===== */
section{padding:100px 0;position:relative}
.s-head{text-align:center;margin-bottom:64px}
.s-head .pill-b{margin-bottom:18px}
.s-head h2{font-family:var(--display);font-weight:500;font-size:clamp(34px,4.2vw,56px);line-height:1.08;letter-spacing:-.02em;color:var(--ink)}
.s-head h2 em{font-style:italic;font-weight:400;color:var(--blue)}
.s-head p{margin:20px auto 0;max-width:620px;font-size:17px;line-height:1.7;color:var(--ink-3)}

/* Overview */
.c-overview{background:var(--card)}
.c-over-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:60px;align-items:center}
.c-over-text p{font-size:16px;color:var(--ink-2);line-height:1.85;margin-bottom:18px}
.c-over-text strong{color:var(--ink);background:#FFF4D9;padding:1px 4px;border-radius:3px}
.c-over-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.c-over-tags span{font-size:13px;font-weight:600;color:var(--ink-2);padding:6px 12px;background:#fff;border:1px solid var(--line);border-radius:999px;transition:all .2s}
.c-over-tags span:hover{border-color:var(--blue);color:var(--blue)}
.c-over-cards{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.c-over-c{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:24px;transition:transform .2s}
.c-over-c:hover{transform:translateY(-3px);box-shadow:0 20px 40px -20px rgba(11,19,32,.12)}
.c-over-c:nth-child(1){background:var(--blue);color:#fff;border-color:var(--blue)}
.c-over-c:nth-child(4){background:var(--ink);color:#fff;border-color:var(--ink)}
.c-over-c .n{font-family:var(--display);font-weight:500;font-size:44px;line-height:.95;letter-spacing:-.02em}
.c-over-c .n em{font-style:italic;font-weight:400}
.c-over-c:nth-child(1) .n em,.c-over-c:nth-child(4) .n em{color:var(--amber)}
.c-over-c:nth-child(2) .n em,.c-over-c:nth-child(3) .n em{color:var(--blue)}
.c-over-c .l{font-size:13px;font-weight:600;margin-top:12px;opacity:.85}

/* Abilities */
.c-abilities{background:var(--bg)}
.c-abi-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.abi{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:28px;display:flex;flex-direction:column;gap:14px;transition:all .3s cubic-bezier(.2,.8,.2,1)}
.abi:hover{transform:translateY(-5px);box-shadow:0 24px 50px -24px rgba(11,19,32,.16);border-color:transparent}
.abi .i{width:52px;height:52px;border-radius:14px;background:var(--blue-soft);color:var(--blue);display:flex;align-items:center;justify-content:center}
.abi:nth-child(2) .i{background:#FFEDE8;color:var(--coral)}
.abi:nth-child(3) .i{background:#E1F7EE;color:var(--mint)}
.abi:nth-child(4) .i{background:#FFF4D9;color:#9C7A00}
.abi:nth-child(5) .i{background:#F1E9FF;color:#6B3DCE}
.abi:nth-child(6) .i{background:var(--blue-soft);color:var(--blue)}
.abi .i svg{width:24px;height:24px}
.abi h4{font-size:19px;font-weight:700;color:var(--ink);letter-spacing:-.01em}
.abi p{font-size:14px;color:var(--ink-3);line-height:1.7}
.abi ul{list-style:none;display:flex;flex-direction:column;gap:6px;margin-top:auto;padding-top:12px;border-top:1px dashed var(--line)}
.abi ul li{font-size:13.5px;color:var(--ink-2);font-weight:500;display:flex;align-items:flex-start;gap:8px}
.abi ul li::before{content:"✓";color:var(--mint);font-weight:800;flex-shrink:0}

/* Career path */
.c-career{background:var(--ink);color:#fff}
.c-career .s-head h2{color:#fff}
.c-career .s-head p{color:rgba(255,255,255,.65)}
.c-career .pill-b{background:rgba(27,78,216,.2);color:#A4BFFF}
.c-career .pill-b::before{background:#A4BFFF}
.career-line{display:grid;grid-template-columns:repeat(5,1fr);gap:0;margin-top:24px;position:relative}
.career-line::before{content:"";position:absolute;top:26px;left:5%;right:5%;height:2px;background:linear-gradient(90deg,rgba(164,191,255,.15),rgba(255,176,32,.6))}
.cs{display:flex;flex-direction:column;align-items:center;text-align:center;position:relative;z-index:1;padding:0 8px}
.cs .dot{width:52px;height:52px;border-radius:50%;background:#1a2640;border:2px solid rgba(255,255,255,.2);display:flex;align-items:center;justify-content:center;color:var(--amber);font-family:var(--display);font-weight:500;font-style:italic;font-size:22px;margin-bottom:18px;transition:all .3s}
.cs:hover .dot{background:var(--blue);border-color:var(--amber);transform:scale(1.08)}
.cs:nth-child(1) .dot{color:#A4BFFF}
.cs:nth-child(5) .dot{background:var(--blue);border-color:var(--amber);color:#fff}
.cs .lv{font-size:11px;font-weight:700;color:var(--amber);letter-spacing:.14em;margin-bottom:4px}
.cs .role{font-size:15px;font-weight:700;color:#fff;margin-bottom:4px}
.cs .sal{font-size:13px;color:rgba(255,255,255,.55);font-weight:500}

/* Exam cards */
.c-exam{background:var(--card)}
.c-exam-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.exc{background:var(--bg);border:1px solid var(--line);border-radius:18px;padding:28px;transition:all .3s}
.exc:hover{transform:translateY(-3px);box-shadow:0 18px 40px -20px rgba(11,19,32,.14);border-color:transparent}
.exc-h{display:flex;align-items:center;gap:14px;margin-bottom:14px}
.exc-h .i{width:42px;height:42px;border-radius:11px;background:var(--blue-soft);color:var(--blue);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.exc-h .i svg{width:20px;height:20px}
.exc-h h4{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:-.01em}
.exc-b{font-size:14.5px;color:var(--ink-2);line-height:1.8}
.exc-b strong{color:var(--ink);font-weight:700;background:#FFF4D9;padding:0 3px;border-radius:3px}
.exc-tbl{width:100%;border-collapse:collapse;margin-top:8px;font-size:13.5px}
.exc-tbl th{text-align:left;font-weight:700;color:var(--ink);padding:10px 12px;border-bottom:2px solid var(--line);font-size:11.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-4)}
.exc-tbl td{padding:10px 12px;border-bottom:1px solid var(--line);color:var(--ink-2)}
.exc-tbl td:first-child{font-weight:700;color:var(--ink)}

/* Scenarios */
.c-scen{background:var(--bg)}
.scen-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.scen{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:26px 22px;text-align:left;transition:all .3s}
.scen:hover{transform:translateY(-4px);box-shadow:0 22px 44px -22px rgba(11,19,32,.16);border-color:transparent}
.scen .i{width:48px;height:48px;border-radius:12px;background:var(--blue-soft);color:var(--blue);display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.scen .i svg{width:22px;height:22px}
.scen h4{font-size:16px;font-weight:700;color:var(--ink);letter-spacing:-.01em;margin-bottom:6px}
.scen p{font-size:13px;color:var(--ink-3);line-height:1.6}
.scen:nth-child(2n) .i{background:#FFF4D9;color:#9C7A00}
.scen:nth-child(3n) .i{background:#E1F7EE;color:var(--mint)}
.scen:nth-child(5n) .i{background:#FFEDE8;color:var(--coral)}
.scen:nth-child(7n) .i{background:#F1E9FF;color:#6B3DCE}

/* Tools */
.c-tools{background:var(--card)}
.tools-wrap{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;max-width:920px;margin:0 auto}
.tc{display:inline-flex;align-items:center;gap:8px;background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:11px 18px;font-size:14px;font-weight:600;color:var(--ink-2);transition:all .2s}
.tc:hover{border-color:var(--blue);color:var(--blue);background:var(--blue-soft);transform:translateY(-2px)}
.tc svg{width:17px;height:17px;color:var(--blue)}

/* CTA */
.c-cta{padding:0}
.c-cta-inner{background:linear-gradient(135deg,var(--blue),var(--blue-2));color:#fff;border-radius:28px;padding:72px 48px;margin:0 32px;position:relative;overflow:hidden;text-align:center}
.c-cta-inner::before{content:"";position:absolute;top:-140px;right:-140px;width:360px;height:360px;border-radius:50%;background:rgba(255,255,255,.06)}
.c-cta-inner::after{content:"";position:absolute;bottom:-100px;left:-100px;width:260px;height:260px;border-radius:50%;background:rgba(255,176,32,.18)}
.c-cta-inner > *{position:relative;z-index:1}
.c-cta-inner .pill-b{background:rgba(255,255,255,.14);color:#fff;margin-bottom:16px}
.c-cta-inner .pill-b::before{background:var(--amber)}
.c-cta-inner h2{font-family:var(--display);font-weight:500;font-size:clamp(34px,4vw,52px);line-height:1.05;letter-spacing:-.02em;margin-bottom:14px}
.c-cta-inner h2 em{font-style:italic;font-weight:400;color:var(--amber)}
.c-cta-inner .lede{font-size:16.5px;line-height:1.7;color:rgba(255,255,255,.82);max-width:560px;margin:0 auto 28px}
.c-cta-inner .btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.c-cta-inner .btn-amber{background:var(--amber);color:var(--ink)}
.c-cta-inner .btn-amber:hover{background:#ffc748}

/* ===== FOOTER ===== */
footer{background:var(--ink);color:#fff;padding:64px 0 28px}
.foot-top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.1)}
.foot-brand .mk{display:flex;align-items:center;gap:14px}
.foot-brand .mk img{width:46px;height:46px;border-radius:50%;background:#fff;padding:3px;object-fit:contain}
.foot-brand .mk .cn{font-family:var(--sc-serif);font-weight:700;font-size:17px;letter-spacing:.04em}
.foot-brand .mk .en{font-size:12px;color:rgba(255,255,255,.55);margin-top:4px;letter-spacing:.06em}
.foot-brand p{font-size:13.5px;color:rgba(255,255,255,.6);margin-top:16px;line-height:1.7;max-width:320px}
.foot-top h6{font-size:11.5px;color:rgba(255,255,255,.5);letter-spacing:.14em;text-transform:uppercase;margin-bottom:16px;font-weight:700}
.foot-top ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.foot-top a,.foot-top li{font-size:14px;color:rgba(255,255,255,.75);font-weight:500}
.foot-top a:hover{color:var(--amber)}
.foot-bot{display:flex;justify-content:space-between;margin-top:28px;font-size:13px;color:rgba(255,255,255,.5)}

/* Reveal */
.reveal{opacity:0;transform:translateY(24px);transition:all .7s cubic-bezier(.16,1,.3,1)}
.reveal.visible{opacity:1;transform:translateY(0)}
.reveal-d1{transition-delay:.08s}.reveal-d2{transition-delay:.16s}.reveal-d3{transition-delay:.24s}
.reveal-d4{transition-delay:.32s}.reveal-d5{transition-delay:.4s}

/* Responsive */
@media(max-width:960px){
  .top-mini{display:none}
  nav.main{padding:12px 20px;grid-template-columns:auto auto}
  .nav-links{display:none}
  .wrap{padding:0 20px}
  .chero-grid,.c-over-grid{grid-template-columns:1fr;gap:36px}
  .chero-visual{min-height:360px}
  .chero-stats{grid-template-columns:repeat(2,1fr)}
  .c-abi-grid{grid-template-columns:1fr}
  .career-line{grid-template-columns:1fr;gap:18px}
  .career-line::before{display:none}
  .c-exam-grid{grid-template-columns:1fr}
  .scen-grid{grid-template-columns:1fr 1fr}
  .c-cta-inner{padding:48px 24px;margin:0 16px}
  .foot-top{grid-template-columns:1fr 1fr}
  section{padding:72px 0}
}
@media(max-width:600px){
  .scen-grid{grid-template-columns:1fr}
  .c-over-cards{grid-template-columns:1fr 1fr}
}

/* ————— Back to top ————— */
.to-top{
  position:fixed;right:28px;bottom:32px;z-index:80;
  width:48px;height:48px;border-radius:50%;border:none;cursor:pointer;
  background:var(--blue);color:#fff;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 28px rgba(27,78,216,.32),0 2px 6px rgba(11,19,32,.12);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease,background .2s ease;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--blue-2);transform:translateY(-2px)}
.to-top:focus-visible{outline:2px solid var(--amber);outline-offset:3px}
.to-top svg{width:20px;height:20px}
@media(max-width:780px){
  .to-top{right:18px;bottom:22px;width:44px;height:44px}
}