/* ============================================================
   超一代教育 · 官网样式
   视觉体系：深海藏蓝 + 香槟金 · 高端职业教育调性
   ============================================================ */

:root{
  --navy-950:#061526;
  --navy-900:#081a2e;
  --navy-800:#0a2540;
  --navy-700:#0f2f52;
  --navy-600:#163a63;
  --gold:#c9a55c;
  --gold-bright:#e0c083;
  --gold-deep:#a8813a;
  --ink:#1c2633;
  --muted:#5a6575;
  --paper:#f6f4ee;
  --white:#ffffff;
  --line:rgba(12,36,66,.10);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --shadow-lg:0 30px 60px -25px rgba(6,21,38,.35);
  --shadow-md:0 18px 40px -20px rgba(6,21,38,.25);
}

*{box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  color:var(--ink);
  background:var(--white);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{font-family:var(--serif);margin:0;line-height:1.25;font-weight:700}
p{margin:0}
.container{max-width:1720px;margin:0 auto;padding:0 48px}
@media(max-width:1280px){.container{padding:0 32px}}
@media(max-width:720px){.container{padding:0 20px}}
@media(max-width:560px){.container{padding:0 16px}}

/* ---- 图标 ---- */
.ico{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex:none}

/* ---- 按钮 ---- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:6px;font-weight:600;font-size:15px;
  border:1px solid transparent;cursor:pointer;transition:all .28s ease;white-space:nowrap;
}
.btn-gold{background:linear-gradient(135deg,var(--gold-bright),var(--gold) 55%,var(--gold-deep));color:#1a1408;box-shadow:0 10px 24px -10px rgba(201,165,92,.6)}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 16px 30px -12px rgba(201,165,92,.75)}
.btn-navy{background:var(--navy-800);color:#fff}
.btn-navy:hover{background:var(--navy-700);transform:translateY(-2px)}
.btn-ghost{border-color:rgba(255,255,255,.35);color:#fff;background:rgba(255,255,255,.06);backdrop-filter:blur(4px)}
.btn-ghost:hover{border-color:var(--gold);color:var(--gold-bright);transform:translateY(-2px)}
.btn-lg{padding:14px 32px;font-size:16px}
.btn-xl{padding:16px 42px;font-size:17px;border-radius:8px}

/* ============================================================
   顶栏
   ============================================================ */
.topbar{background:var(--navy-950);color:rgba(255,255,255,.82);font-size:13px}
.topbar-inner{display:flex;align-items:center;gap:28px;height:40px;flex-wrap:wrap}
.topbar-item{display:inline-flex;align-items:center;gap:7px}
.topbar-item .ico{width:14px;height:14px;color:var(--gold)}
.topbar-item a{color:inherit;transition:color .2s}
.topbar-item a:hover{color:var(--gold-bright)}
.topbar-brand-line{color:var(--gold-bright);font-weight:500}
@media(max-width:640px){.topbar-brand-line{display:none}}

/* ============================================================
   导航
   ============================================================ */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.94);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .3s;
}
.site-header.scrolled{box-shadow:0 10px 30px -18px rgba(6,21,38,.35)}
.nav-inner{display:flex;align-items:center;gap:32px;height:76px}
.brand{display:flex;align-items:center;gap:12px}
.brand-logo{width:46px;height:46px;object-fit:cover;border-radius:10px;flex:none;box-shadow:0 6px 16px -8px rgba(6,21,38,.45);border:1px solid rgba(12,36,66,.12)}
.brand-mark{width:46px;height:46px;flex:none}
.brand-mark svg{width:100%;height:100%}
.brand-mark .b-d{fill:var(--navy-800)}
.brand-mark .b-g{fill:none;stroke:var(--gold);stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round}
.brand-mark .b-g2{fill:none;stroke:var(--gold-bright);stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-family:var(--serif);font-size:22px;letter-spacing:.5px;color:var(--navy-800)}
.site-header .brand-text strong{font-size:17px;letter-spacing:.2px;white-space:nowrap}
@media(max-width:1250px){.site-header .brand-text small{display:none}}
@media(max-width:1250px) and (min-width:1081px){.site-header .brand-text strong{font-size:15px}}
.brand-text small{font-size:10px;letter-spacing:2.4px;color:var(--gold-deep);text-transform:uppercase;white-space:nowrap}
.site-nav{display:flex;gap:4px;margin-left:auto}
.nav-link{
  padding:9px 12px;border-radius:6px;font-size:14.5px;font-weight:500;color:var(--ink);
  position:relative;transition:color .2s;white-space:nowrap;
}
.nav-link:hover{color:var(--gold-deep)}
.nav-link.active{color:var(--navy-800);font-weight:700}
.nav-link.active::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;background:var(--gold);border-radius:2px}
.nav-cta{margin-left:6px}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;width:40px;height:40px;flex-direction:column;align-items:center;justify-content:center;gap:5px;margin-left:auto}
.nav-toggle span{width:22px;height:2px;background:var(--navy-800);border-radius:2px;transition:all .3s}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media(max-width:1080px){
  .nav-cta{display:none}
  .nav-toggle{display:flex}
  .site-nav{
    position:absolute;top:76px;left:0;right:0;
    background:#fff;flex-direction:column;padding:12px 20px 20px;
    border-bottom:1px solid var(--line);box-shadow:0 24px 40px -24px rgba(6,21,38,.25);
    display:none;
  }
  .site-nav.open{display:flex}
  .nav-link{padding:12px 6px;border-bottom:1px solid var(--line);border-radius:0;white-space:nowrap}
  .nav-link.active::after{display:none}
}

/* ============================================================
   Hero
   ============================================================ */
.hero{position:relative;min-height:640px;display:flex;align-items:center;overflow:hidden;color:#fff}
.hero-slides{position:absolute;inset:0;overflow:hidden}
.hero-slide{position:absolute;inset:0;background-size:cover;background-position:center;opacity:0;transition:opacity 1.1s ease,transform 6s ease;transform:scale(1.08)}
.hero-slide.is-active{opacity:1;transform:scale(1.02)}
.hero-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:5;width:48px;height:48px;border-radius:50%;border:1px solid rgba(255,255,255,.3);background:rgba(6,21,38,.35);backdrop-filter:blur(4px);color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .28s}
.hero-arrow svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.hero-arrow:hover{background:rgba(201,165,92,.88);color:#1a1408;border-color:var(--gold)}
.hero-prev{left:20px}
.hero-next{right:20px}
.hero-dots{position:absolute;bottom:22px;left:0;right:0;z-index:5;display:flex;justify-content:center;gap:10px}
.hero-dot{width:10px;height:10px;border-radius:50%;border:none;background:rgba(255,255,255,.4);cursor:pointer;padding:0;transition:all .28s}
.hero-dot.is-active{background:var(--gold-bright);width:26px;border-radius:20px}
@media(max-width:640px){.hero{min-height:560px}.hero-inner{padding:80px 0}.hero-arrow{display:none}.hero-dots{bottom:16px}}
.hero-overlay{position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(6,21,38,.96) 0%,rgba(6,21,38,.85) 34%,rgba(6,21,38,.45) 62%,rgba(10,37,64,.28) 100%);
}
.hero-inner{position:relative;z-index:2;padding:110px 0}
.hero-copy{max-width:660px}
.eyebrow{display:flex;align-items:center;gap:12px;font-size:14px;letter-spacing:3px;color:var(--gold-bright);margin-bottom:22px;text-transform:uppercase}
.eyebrow-line{width:40px;height:1px;background:var(--gold)}
.hero-title{font-size:clamp(38px,6vw,66px);font-weight:900;letter-spacing:1px;color:#fff}
.hero-title .gold{color:var(--gold-bright);font-style:normal}
.hero-sub{margin:26px 0 34px;font-size:clamp(15px,2vw,18px);color:rgba(255,255,255,.85);max-width:560px;font-weight:300}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.hero-tags{display:flex;gap:10px;margin-top:36px;flex-wrap:wrap}
.hero-tags span{font-size:13px;color:rgba(255,255,255,.85);border:1px solid rgba(255,255,255,.25);padding:6px 14px;border-radius:30px;letter-spacing:1px}
@media(max-width:640px){.hero{min-height:560px}.hero-inner{padding:80px 0}}

/* ============================================================
   亮点条
   ============================================================ */
.highlight{background:var(--white);position:relative;z-index:3;margin-top:-1px}
.highlight-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.hl-card{display:flex;align-items:center;gap:16px;padding:30px 24px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.hl-card:last-child{border-right:none}
.hl-ico{width:44px;height:44px;flex:none;fill:none;stroke:var(--gold);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.hl-card strong{font-family:var(--serif);font-size:18px;color:var(--navy-800);display:block;line-height:1.3}
.hl-card p{font-size:13px;color:var(--muted);margin-top:4px}
@media(max-width:960px){.highlight-grid{grid-template-columns:repeat(2,1fr)}.hl-card:nth-child(2){border-right:none}}
@media(max-width:520px){.highlight-grid{grid-template-columns:1fr}.hl-card{border-right:none}}

/* ============================================================
   通用 section
   ============================================================ */
.section{padding:96px 0}
.section-dark{background:var(--navy-900);color:#fff}
.section-navy{background:linear-gradient(160deg,var(--navy-950),var(--navy-800));color:#fff}
.section-paper{background:var(--paper)}
.kicker{font-size:13px;letter-spacing:3px;color:var(--gold-deep);text-transform:uppercase;margin-bottom:14px}
.kicker.light{color:var(--gold-bright)}
.section-title{font-size:clamp(28px,3.6vw,42px);font-weight:700;color:var(--navy-800);letter-spacing:.5px}
.section-title .gold{color:var(--gold-deep)}
.section-title.light{color:#fff}
.section-title.light .gold{color:var(--gold-bright)}
.section-desc{margin-top:18px;color:var(--muted);font-size:16px;max-width:620px}
.section-head{margin-bottom:52px}
.section-head.light .section-desc{color:rgba(255,255,255,.7)}

/* ============================================================
   关于我们
   ============================================================ */
.split{display:grid;grid-template-columns:1fr 1.05fr;gap:64px;align-items:center}
.split-media{position:relative}
.media-frame{border-radius:14px;overflow:hidden;box-shadow:var(--shadow-lg)}
.media-frame img{width:100%;aspect-ratio:4/3;object-fit:cover}
.media-badge{
  position:absolute;left:-18px;bottom:-22px;background:var(--navy-800);color:#fff;
  padding:18px 26px;border-radius:10px;box-shadow:var(--shadow-md);
  display:flex;flex-direction:column;line-height:1.2;
}
.media-badge strong{font-family:var(--serif);font-size:24px;color:var(--gold-bright)}
.media-badge span{font-size:12px;color:rgba(255,255,255,.8);margin-top:4px;letter-spacing:1px}
.split-copy .lead{margin:22px 0 14px;font-size:17px;color:var(--ink);font-weight:500}
.split-copy>p:not(.lead){color:var(--muted);margin-bottom:12px}
.point-list{margin:28px 0 34px;display:flex;flex-direction:column;gap:20px}
.point-list li{display:flex;gap:16px;align-items:flex-start}
.pt-dot{width:12px;height:12px;flex:none;margin-top:7px;background:var(--gold);border-radius:3px;transform:rotate(45deg);box-shadow:0 0 0 5px rgba(201,165,92,.18)}
.point-list strong{font-size:17px;font-family:var(--serif);color:var(--navy-800)}
.point-list p{color:var(--muted);font-size:14.5px}
@media(max-width:900px){.split{grid-template-columns:1fr;gap:56px}.media-badge{left:12px;bottom:-18px}}

/* ============================================================
   品牌故事
   ============================================================ */
.story-body{display:grid;grid-template-columns:1.15fr .9fr;gap:64px;align-items:start}
.story-narrative .story-lead{font-size:18px;color:var(--navy-800);font-family:var(--serif);font-weight:600;line-height:1.7;margin-bottom:16px}
.story-narrative p:not(.story-lead):not(.story-slogan){color:var(--muted);font-size:15.5px;line-height:1.9;margin-bottom:14px}
.story-slogan{margin-top:26px;font-family:var(--serif);font-size:22px;color:var(--gold-deep);font-weight:700;letter-spacing:1px}
.story-timeline-title{font-size:13px;letter-spacing:3px;color:var(--gold-deep);text-transform:uppercase;margin-bottom:24px}
.story-timeline{border-left:2px solid rgba(201,165,92,.45);padding-left:2px}
.story-timeline ul{display:flex;flex-direction:column;gap:28px}
.story-timeline li{position:relative;padding-left:32px}
.story-dot{position:absolute;left:-7px;top:5px;width:12px;height:12px;border-radius:50%;background:linear-gradient(135deg,var(--gold-bright),var(--gold-deep));box-shadow:0 0 0 5px rgba(201,165,92,.18)}
.story-timeline strong{display:block;font-family:var(--serif);font-size:18px;color:var(--navy-800)}
.story-timeline p{color:var(--muted);font-size:14.5px;margin-top:4px}
.values-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:60px;padding-top:46px;border-top:1px solid var(--line)}
.value-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:28px 24px;transition:all .3s}
.value-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(201,165,92,.5)}
.value-ico{width:48px;height:48px;border-radius:12px;background:linear-gradient(135deg,var(--navy-800),var(--navy-600));display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.value-ico svg{width:24px;height:24px;fill:none;stroke:var(--gold-bright);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.value-card h3{font-size:18px;color:var(--navy-800);margin-bottom:8px}
.value-card p{color:var(--muted);font-size:14px}
@media(max-width:960px){.story-body{grid-template-columns:1fr;gap:44px}.values-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.values-grid{grid-template-columns:1fr}}

/* ============================================================
   专业设置
   ============================================================ */
.majors-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.major-card{
  display:flex;flex-direction:column;align-items:flex-start;
  background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.1);
  border-radius:14px;padding:30px 26px;transition:all .3s ease;position:relative;overflow:hidden;
}
.major-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--gold),transparent);opacity:0;transition:opacity .3s}
.major-card:hover{transform:translateY(-6px);background:rgba(255,255,255,.07);border-color:rgba(201,165,92,.45)}
.major-card:hover::before{opacity:1}
.major-ico{width:52px;height:52px;border-radius:12px;background:linear-gradient(135deg,var(--gold-bright),var(--gold-deep));display:flex;align-items:center;justify-content:center;margin-bottom:20px}
.major-ico svg{width:26px;height:26px;fill:none;stroke:#1a1408;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.major-card h3{font-size:21px;color:#fff;margin-bottom:10px}
.major-card p{font-size:14.5px;color:rgba(255,255,255,.72);flex:1}
.tag{display:inline-block;margin-top:auto;font-size:12px;color:var(--gold-bright);border:1px solid rgba(201,165,92,.5);padding:4px 12px;border-radius:30px;letter-spacing:1px;white-space:nowrap;align-self:flex-start}
.major-featured{background:linear-gradient(150deg,rgba(201,165,92,.16),rgba(255,255,255,.03));border-color:rgba(201,165,92,.4)}
.major-featured h3{color:var(--gold-bright)}
@media(max-width:960px){.majors-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.majors-grid{grid-template-columns:1fr}}

/* ============================================================
   教学优势
   ============================================================ */
.adv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.adv-card{border:1px solid var(--line);border-radius:14px;padding:30px 28px;background:#fff;transition:all .3s;position:relative;overflow:hidden}
.adv-card::after{content:"";position:absolute;right:-30px;top:-30px;width:90px;height:90px;border-radius:50%;background:radial-gradient(circle,rgba(201,165,92,.16),transparent 70%)}
.adv-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px);border-color:rgba(201,165,92,.5)}
.adv-num{font-family:var(--serif);font-size:40px;font-weight:900;color:rgba(201,165,92,.35);line-height:1;display:block;margin-bottom:16px}
.adv-card h3{font-size:20px;color:var(--navy-800);margin-bottom:10px}
.adv-card p{color:var(--muted);font-size:14.5px}
@media(max-width:900px){.adv-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.adv-grid{grid-template-columns:1fr}}

/* ============================================================
   师资介绍
   ============================================================ */
.teacher-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.teacher-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:34px 26px 30px;text-align:center;transition:all .3s;position:relative;overflow:hidden}
.teacher-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--navy-800),var(--gold));opacity:0;transition:opacity .3s}
.teacher-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:rgba(201,165,92,.5)}
.teacher-card:hover::before{opacity:1}
.teacher-avatar{width:90px;height:126px;margin:0 auto 18px;border-radius:6px;background:linear-gradient(135deg,var(--navy-800),var(--navy-600));color:var(--gold-bright);font-family:var(--serif);font-size:34px;font-weight:700;display:flex;align-items:center;justify-content:center;border:3px solid #fff;box-shadow:0 0 0 1px rgba(120,120,120,.35),0 8px 18px -8px rgba(6,21,38,.35);background-size:cover;background-position:center}
.teacher-card h3{font-size:21px;color:var(--navy-800)}
.teacher-sub{font-size:13px;color:var(--gold-deep);letter-spacing:1px;margin:8px 0 14px;font-weight:500}
.teacher-desc{font-size:14px;color:var(--muted);min-height:72px}
.teacher-card .tag{margin-top:18px}
@media(max-width:960px){.teacher-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.teacher-grid{grid-template-columns:1fr}.teacher-desc{min-height:0}}

/* ============================================================
   职业进阶
   ============================================================ */
.path-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-bottom:56px;position:relative}
.path-steps::before{content:"";position:absolute;top:26px;left:12%;right:12%;height:2px;background:linear-gradient(90deg,rgba(201,165,92,.2),var(--gold),rgba(201,165,92,.2))}
.path-step{text-align:center;padding:0 18px;position:relative}
.step-dot{width:54px;height:54px;border-radius:50%;background:linear-gradient(135deg,var(--gold-bright),var(--gold-deep));color:#1a1408;font-family:var(--serif);font-weight:700;font-size:22px;display:flex;align-items:center;justify-content:center;margin:0 auto 22px;box-shadow:0 0 0 8px rgba(201,165,92,.15);position:relative;z-index:2}
.path-step h3{font-size:19px;color:#fff;margin-bottom:10px}
.path-step p{font-size:14px;color:rgba(255,255,255,.72)}
.path-foot{display:grid;grid-template-columns:1fr 1.2fr;gap:40px;align-items:center}
.cert-card{display:flex;align-items:center;gap:20px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);border-radius:14px;padding:26px}
.cert-ico{width:60px;height:60px;flex:none;border-radius:14px;background:linear-gradient(135deg,var(--gold-bright),var(--gold-deep));display:flex;align-items:center;justify-content:center}
.cert-ico svg{width:32px;height:32px;fill:none;stroke:#1a1408;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.cert-card strong{font-family:var(--serif);font-size:19px;color:var(--gold-bright);display:block;line-height:1.4}
.cert-card p{color:rgba(255,255,255,.75);font-size:14px;margin-top:6px}
.path-media{border-radius:14px;box-shadow:var(--shadow-lg);width:100%;aspect-ratio:4/3;object-fit:cover}
@media(max-width:900px){
  .path-steps{grid-template-columns:repeat(2,1fr);gap:34px 0}
  .path-steps::before{display:none}
  .path-foot{grid-template-columns:1fr}
}

/* ============================================================
   在线考试
   ============================================================ */
.section-exam{background:linear-gradient(160deg,var(--navy-900),var(--navy-700));color:#fff;position:relative;overflow:hidden;text-align:center}
.section-exam::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 50% 130%,rgba(201,165,92,.22),transparent 62%)}
.section-exam::after{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--gold),rgba(201,165,92,.15))}
.exam-inner{position:relative;z-index:2;display:flex;flex-direction:column;align-items:center;text-align:center}
.exam-mark{width:72px;height:72px;border-radius:50%;background:linear-gradient(135deg,var(--gold-bright),var(--gold-deep));display:flex;align-items:center;justify-content:center;margin-bottom:28px;box-shadow:0 0 0 10px rgba(201,165,92,.15)}
.exam-mark svg{width:38px;height:38px;fill:none;stroke:#1a1408;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.section-exam .section-desc{margin-left:auto;margin-right:auto;color:rgba(255,255,255,.78)}
.exam-inner .btn{margin-top:36px}
.section-exam .kicker{margin-bottom:16px}

/* ============================================================
   卡片「查看详情」提示
   ============================================================ */
.more-hint{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:13px;letter-spacing:1px;font-weight:500;transition:all .2s}
.major-card .more-hint{color:var(--gold-bright)}
.teacher-card .more-hint{color:var(--gold-deep)}
.major-card:hover .more-hint,.teacher-card:hover .more-hint{gap:10px}

/* ============================================================
   二级详情页
   ============================================================ */
.detail-page{background:var(--paper);min-height:70vh}
.detail-inner{max-width:1720px;margin:0 auto;padding:64px 48px 88px}
.detail-back{display:inline-flex;align-items:center;gap:8px;margin-bottom:28px;color:var(--navy-800);font-weight:600;font-size:15px;transition:color .2s}
.detail-back:hover{color:var(--gold-deep)}
.detail-back svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.detail-head{display:flex;gap:24px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:16px;padding:34px;box-shadow:var(--shadow-md);margin-bottom:28px;flex-wrap:wrap}
.detail-ico{width:76px;height:76px;border-radius:16px;background:linear-gradient(135deg,var(--gold-bright),var(--gold-deep));display:flex;align-items:center;justify-content:center;flex:none}
.detail-ico svg{width:38px;height:38px;fill:none;stroke:#1a1408;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.detail-head h1{font-size:clamp(26px,4vw,34px);color:var(--navy-800)}
.detail-kicker{font-size:12px;letter-spacing:3px;color:var(--gold-deep);text-transform:uppercase;display:block;margin-bottom:6px}
.detail-head .tag{color:var(--gold-deep);border-color:rgba(168,129,58,.5);margin-top:10px}
.detail-lead{color:var(--muted);font-size:15px;margin-top:4px}
.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.detail-block{background:#fff;border:1px solid var(--line);border-radius:14px;padding:28px;box-shadow:var(--shadow-md)}
.detail-block h2{font-size:19px;color:var(--navy-800);margin-bottom:16px;display:flex;align-items:center;gap:10px}
.detail-block h2::before{content:"";width:6px;height:18px;border-radius:2px;background:linear-gradient(180deg,var(--gold-bright),var(--gold-deep))}
.detail-block ul{display:flex;flex-direction:column;gap:12px}
.detail-block li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--ink);line-height:1.6}
.detail-block li::before{content:"";flex:none;width:7px;height:7px;border-radius:50%;background:var(--gold);margin-top:9px}
.detail-chip{display:inline-block;font-size:13px;color:var(--navy-700);background:rgba(201,165,92,.14);border:1px solid rgba(201,165,92,.4);padding:6px 12px;border-radius:30px;margin:0 8px 8px 0}
.detail-full{grid-column:1/-1}
.detail-avatar{width:104px;height:146px;border-radius:8px;background:linear-gradient(135deg,var(--navy-800),var(--navy-600));color:var(--gold-bright);font-family:var(--serif);font-size:40px;font-weight:700;display:flex;align-items:center;justify-content:center;flex:none;border:3px solid #fff;box-shadow:0 0 0 1px rgba(120,120,120,.35),0 10px 22px -10px rgba(6,21,38,.4);overflow:hidden;background-size:cover;background-position:center}
.detail-avatar.has-photo{background-size:cover;background-position:center}
.detail-cta{display:flex;justify-content:center;margin-top:36px}
.detail-para{font-size:15px;color:var(--ink);line-height:1.8}
.pair-groups{margin-top:8px}
.pair-name{font-size:23px;color:var(--navy-800);margin:38px 0 18px;display:flex;align-items:center;gap:10px;font-family:var(--serif);font-weight:700}
.pair-name::before{content:"";width:7px;height:21px;border-radius:2px;background:linear-gradient(180deg,var(--gold-bright),var(--gold-deep))}
.pair-groups .pair-name:first-child{margin-top:0}
@media(max-width:720px){.detail-grid{grid-template-columns:1fr}.detail-head{padding:24px}.detail-inner{padding:40px 20px 64px}}

/* ============================================================
   作业批改 · 数学批改模块嵌入页
   ============================================================ */
.homework-frame{width:100%;height:1180px;border:1px solid var(--line);border-radius:16px;background:#fff;box-shadow:var(--shadow-md);display:block}
.homework-placeholder{display:flex;align-items:center;justify-content:center;min-height:320px;background:#fff;border:1px dashed var(--line);border-radius:16px;color:var(--muted);font-size:16px;text-align:center;padding:24px}
.homework-page .section-head{margin-bottom:34px}
.hw-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.hw-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:34px 30px;box-shadow:var(--shadow-md);text-decoration:none;display:flex;flex-direction:column;gap:14px;transition:transform .2s,box-shadow .2s}
.hw-card:hover{transform:translateY(-4px);box-shadow:0 18px 40px -18px rgba(6,21,38,.35)}
.hw-ico{width:64px;height:64px;border-radius:14px;background:linear-gradient(135deg,var(--gold-bright),var(--gold-deep));display:flex;align-items:center;justify-content:center}
.hw-ico svg{width:32px;height:32px;fill:none;stroke:#1a1408;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.hw-card h3{font-size:22px;color:var(--navy-800);font-family:var(--serif);margin:0}
.hw-card p{font-size:14px;color:var(--muted);line-height:1.7;margin:0}
.hw-go{font-size:14px;font-weight:600;color:var(--gold-deep);margin-top:auto}
@media(max-width:900px){.hw-grid{grid-template-columns:1fr}}
@media(max-width:720px){.homework-frame{height:860px}}

/* ---- 数学作业批改：上传界面 ---- */
.hcm-panel{margin-top:8px}
.hcm-upload{margin-bottom:22px}
.hcm-drop{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;min-height:240px;background:#fff;border:2px dashed var(--line);border-radius:16px;cursor:pointer;text-align:center;padding:30px;transition:border-color .2s,background .2s}
.hcm-drop:hover{border-color:var(--gold-deep);background:#fffdf5}
.hcm-drop strong{font-size:18px;color:var(--navy-800);font-family:var(--serif)}
.hcm-hint{font-size:13px;color:var(--muted)}
.hcm-ico{width:64px;height:64px;border-radius:50%;background:linear-gradient(135deg,var(--gold-bright),var(--gold-deep));display:flex;align-items:center;justify-content:center}
.hcm-ico svg{width:30px;height:30px;fill:none;stroke:#1a1408;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.hcm-preview{background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow-md);padding:18px}
.hcm-preview img{width:100%;max-width:640px;max-height:520px;object-fit:contain;border-radius:10px;margin:0 auto;display:block}
.hcm-prevbar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 2px 0;font-size:13px;color:var(--muted)}
.hcm-prevbar button{background:none;border:none;color:var(--gold-deep);font-weight:600;cursor:pointer;font-size:13px}
.hcm-btn{display:block;width:100%;margin-top:14px;padding:14px;font-size:16px;font-weight:600;color:#1a1408;background:linear-gradient(135deg,var(--gold-bright),var(--gold-deep));border:none;border-radius:12px;cursor:pointer;font-family:var(--serif)}
.hcm-btn:hover{filter:brightness(1.05)}
.hcm-status{min-height:0;margin-bottom:6px}
.hcm-msg{padding:14px 18px;border-radius:12px;font-size:14px;line-height:1.6;margin-bottom:14px}
.hcm-msg.busy{background:#eef4ff;color:#1a4fb0;border:1px solid #c9dcff}
.hcm-msg.error{background:#fdecec;color:#b3352b;border:1px solid #f3c4c0}
.hcm-msg.warn{background:#fff6e6;color:#8a5a00;border:1px solid #f2dcb0}
.hcm-result{display:flex;flex-direction:column;gap:14px}
.hcm-stat{font-size:15px;color:var(--navy-800);padding:12px 16px;background:#fff;border:1px solid var(--line);border-radius:12px}
.hcm-stat b.ok{color:#1c8a4f}
.hcm-stat b.bad{color:#c33a30}
.hcm-items{display:flex;flex-direction:column;gap:10px}
.hcm-item{display:flex;align-items:center;gap:14px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 18px;box-shadow:var(--shadow-sm)}
.hcm-item .hcm-mark{flex:0 0 auto;width:34px;height:34px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;color:#fff}
.hcm-item.yes .hcm-mark{background:#1c8a4f}
.hcm-item.no .hcm-mark{background:#c33a30}
.hcm-item .hcm-expr{font-size:16px;color:var(--navy-800);font-weight:600;line-height:1.6}
.hcm-item .hcm-expr em{font-style:normal;font-weight:500;color:var(--muted);font-size:13px}
@media(max-width:720px){.hcm-preview img{max-height:360px}}

/* ============================================================
   教师详情 · 左相框 + 右内容 两栏布局
   ============================================================ */
.teacher-layout{display:grid;grid-template-columns:clamp(320px,28vw,640px) 1fr;gap:36px}
.teacher-album{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;background:linear-gradient(160deg,#0b2b4a,#071e33 55%,#0a2540);border:1px solid rgba(201,165,92,.4);border-radius:16px;padding:28px 22px;min-height:600px;box-shadow:var(--shadow-md)}
.teacher-main{min-width:0}
@media(max-width:900px){.teacher-layout{grid-template-columns:1fr}.teacher-album{height:auto;min-height:0;padding:26px 16px}.album-block{height:auto}.album-stage{flex:none;display:block;padding:16px 44px}.photo-frame{height:auto;width:100%}}

/* ============================================================
   精彩时刻 · 电子相框相册
   ============================================================ */
.album-block{margin:0;text-align:center;display:flex;flex-direction:column;height:100%;width:100%}
.album-title{font-size:22px;color:var(--navy-800);font-family:var(--serif);display:inline-flex;align-items:center;gap:12px}
.album-title::before,.album-title::after{content:"";width:22px;height:1px;background:linear-gradient(90deg,transparent,var(--gold))}
.album-title::after{background:linear-gradient(90deg,var(--gold),transparent)}
.album-sub{color:var(--muted);font-size:11px;letter-spacing:2px;text-transform:uppercase;margin-top:8px;margin-bottom:14px}
.album-stage{position:relative;flex:1;display:flex;align-items:center;justify-content:center;width:100%;padding:14px 52px;box-sizing:border-box;min-height:0}
.photo-frame{
  position:relative;width:100%;height:auto;border-radius:20px;padding:16px;
  background:linear-gradient(150deg,#163a63,#061526 60%,#0a2540);
  border:2px solid rgba(201,165,92,.65);
  box-shadow:0 0 0 5px rgba(6,21,38,.3),0 24px 50px -18px rgba(6,21,38,.6),inset 0 0 0 1px rgba(255,255,255,.14);
}
.frame-photos{position:relative;width:100%;aspect-ratio:3/4;border-radius:10px;overflow:hidden;background:#000}
.frame-photo{position:absolute;inset:0;background-size:cover;background-position:center;opacity:0;transition:opacity 1s ease,transform 6s ease;transform:scale(1.06)}
.frame-photo.is-active{opacity:1;transform:scale(1.01)}
.frame-glare{position:absolute;inset:0;pointer-events:none;border-radius:10px;background:linear-gradient(115deg,rgba(255,255,255,.18) 0%,rgba(255,255,255,.05) 26%,transparent 40%)}
.frame-brand{position:absolute;left:0;right:0;bottom:0;padding:26px 18px 10px;color:rgba(255,255,255,.78);font-size:12px;letter-spacing:2px;text-align:center;background:linear-gradient(transparent,rgba(6,21,38,.72));pointer-events:none}
.album-prev,.album-next{position:absolute;top:50%;transform:translateY(-50%);z-index:6;width:42px;height:42px;border-radius:50%;border:1px solid rgba(168,129,58,.5);background:#fff;color:var(--navy-700);cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-md);transition:all .28s}
.album-prev svg,.album-next svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.album-prev{left:0}
.album-next{right:0}
.album-prev:hover,.album-next:hover{background:linear-gradient(135deg,var(--gold-bright),var(--gold-deep));color:#1a1408;border-color:var(--gold)}
.album-dots{display:flex;justify-content:center;gap:9px;margin-top:18px}
.album-dot{width:9px;height:9px;border-radius:50%;border:none;background:rgba(168,129,58,.35);cursor:pointer;padding:0;transition:all .28s}
.album-dot.is-active{background:var(--gold-deep);width:22px;border-radius:20px}

/* ============================================================
   联系我们
   ============================================================ */
.contact-wrap{background:var(--paper);border-radius:18px;padding:64px;position:relative;overflow:hidden}
.contact-wrap::before{content:"";position:absolute;top:0;left:0;right:0;height:5px;background:linear-gradient(90deg,var(--navy-800),var(--gold),var(--navy-800))}
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:40px}
.contact-card{display:flex;gap:18px;align-items:flex-start;background:#fff;border-radius:12px;padding:26px;box-shadow:var(--shadow-md);border:1px solid var(--line);transition:all .3s}
a.contact-card:hover{transform:translateY(-4px);border-color:rgba(201,165,92,.5)}
.c-ico{width:48px;height:48px;flex:none;border-radius:12px;background:linear-gradient(135deg,var(--navy-800),var(--navy-600));display:flex;align-items:center;justify-content:center}
.c-ico svg{width:24px;height:24px;fill:none;stroke:var(--gold-bright);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.contact-card small{display:block;font-size:12px;letter-spacing:2px;color:var(--muted);margin-bottom:6px}
.contact-card strong{font-family:var(--serif);font-size:18px;color:var(--navy-800);display:block;line-height:1.4}
.contact-card p{font-size:13px;color:var(--muted);margin-top:6px}
.contact-cta{display:flex;justify-content:center;margin-top:44px}
@media(max-width:900px){.contact-grid{grid-template-columns:1fr}.contact-wrap{padding:44px 28px}}

/* ============================================================
   页脚
   ============================================================ */
.site-footer{background:var(--navy-950);color:rgba(255,255,255,.72);font-size:14px}
.footer-inner{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1.2fr;gap:40px;padding-top:64px;padding-bottom:48px}
.footer-brand .brand{margin-bottom:18px}
.footer-brand .brand-text strong{color:#fff}
.footer-brand p{font-size:14px;color:rgba(255,255,255,.65);max-width:340px}
.footer-col h4{font-family:var(--serif);color:#fff;font-size:16px;margin-bottom:18px;position:relative;padding-bottom:10px}
.footer-col h4::after{content:"";position:absolute;left:0;bottom:0;width:26px;height:2px;background:var(--gold)}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col li{color:rgba(255,255,255,.72)}
.footer-col a{transition:color .2s}
.footer-col a:hover{color:var(--gold-bright)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;text-align:center;font-size:12.5px;color:rgba(255,255,255,.5)}
.footer-bottom a{color:rgba(255,255,255,.62);transition:color .2s}
.footer-bottom a:hover{color:var(--gold-bright)}
@media(max-width:900px){.footer-inner{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}}

/* ============================================================
   悬浮咨询按钮（移动端）
   ============================================================ */
.float-cta{
  position:fixed;right:20px;bottom:20px;z-index:90;
  width:56px;height:56px;border-radius:50%;
  background:linear-gradient(135deg,var(--gold-bright),var(--gold-deep));
  display:none;align-items:center;justify-content:center;
  box-shadow:0 12px 28px -8px rgba(201,165,92,.7);
}
.float-cta svg{width:26px;height:26px;fill:none;stroke:#1a1408;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
@media(max-width:1080px){.float-cta{display:flex}}

/* 可访问性：键盘焦点可见 */
a:focus-visible,button:focus-visible{border-radius:4px;outline:2px solid var(--gold-deep);outline-offset:2px}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}html{scroll-behavior:auto}}