/* ============ 柚子未来 YUZU FUTURE - 高级感暖棕配色系统 ============ */
/* 配色表（5色）：#462506深棕 / #9f691f金棕(弱化) / #daa754琥珀金(主) / #f8f4ec浅奶油(主) / #e9c579浅金(主) */
/* 主色调：琥珀金#daa754 + 浅奶油#f8f4ec + 浅金#e9c579；深色锚点：深棕#462506；弱化：金棕#9f691f */

/* ============ Reset & Base ============ */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Helvetica,Arial,sans-serif;
  font-size:15px;line-height:1.7;color:#000000;background:#fffdf9;overflow-x:hidden;
}
body.modal-open{overflow:hidden}
img{max-width:100%;height:auto;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .25s ease,opacity .25s ease}
a:hover{color:#000000}
ul,ol{list-style:none}
button{font-family:inherit;cursor:pointer;border:0;background:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}

/* ============ 暖棕主题色板 (Warm Brown Palette - 5色配色表) ============ */
:root{
  --brown-deep:#462506;
  --brown-warm:#9f691f;
  --gold-amber:#daa754;
  --cream:#f8f4ec;
  --gold-light:#e9c579;
  --brown-dark:#462506;

  --navy:#462506;
  --navy-2:#462506;
  --navy-3:#9f691f;
  --gold:#daa754;
  --gold-2:#e9c579;
  --gold-soft:#f8f4ec;

  --ink:#000000;
  --gray:#000000;
  --gray-light:#f8f4ec;
  --gray-border:#e8dfd0;
  --white:#ffffff;

  --shadow-warm:rgba(70,37,6,.08);
  --shadow-gold:rgba(218,167,84,.18);
  --glow-amber:rgba(218,167,84,.25);
}

/* ============ Header ============ */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.97);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--gray-border);
  box-shadow:0 1px 8px var(--shadow-warm);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:70px;gap:20px}
.logo-wrap{display:flex;align-items:center;gap:8px}
.logo-wrap img{height:42px;width:auto;}
.logo-text{display:flex;flex-direction:column;line-height:1.1}
.logo-text .cn{font-size:18px;font-weight:800;color:#000000;letter-spacing:1px}
.logo-text .en{font-size:10px;font-weight:600;color:#000000;letter-spacing:2px;text-transform:uppercase}

/* Main Nav */
.main-nav{display:flex;align-items:center;gap:1px;flex:1;justify-content:center}
.main-nav > li{position:relative;flex:1;text-align:center}
.main-nav > li > a{
  display:block;padding:7px 5px;font-size:13px;font-weight:600;color:#000000;text-align:center;white-space:nowrap;
  border-radius:6px;transition:all .25s ease;cursor:pointer;position:relative;
}
.main-nav > li > a:hover,.main-nav > li:hover > a{
  color:#000000;
  background:rgba(218,167,84,.07);
}
.main-nav > li > a.active{color:#000000;font-weight:700}
.main-nav > li > a.active::after{
  content:"";position:absolute;bottom:2px;left:50%;transform:translateX(-50%);
  width:20px;height:2.5px;background:var(--gold-amber);border-radius:2px;
}

/* Dropdown */
.dropdown{
  position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(8px);
  min-width:120px;background:#fff;border:1px solid var(--gray-border);
  border-radius:10px;box-shadow:0 12px 40px rgba(70,37,6,.10),0 4px 12px rgba(70,37,6,.06);
  padding:4px;opacity:0;visibility:hidden;transition:all .28s ease;z-index:200;
}
.main-nav > li:hover .dropdown{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.dropdown li a{
  display:block;padding:6px 6px;font-size:12px;color:#000000;border-radius:6px;
  transition:all .18s ease;
}
.dropdown li a:hover{
  background:rgba(218,167,84,.15);
  color:#000000;
}
.dropdown li a .d-en{display:block;font-size:10px;color:#000000;font-weight:400;margin-top:1px}

.header-right{display:flex;align-items:center;gap:12px;position:relative;left:14px}
.header-phone{display:flex;align-items:center;gap:5px;font-size:13px;color:#000000;font-weight:600}
.header-phone svg{width:16px;height:16px;fill:var(--gold-amber)}
.header-right > .btn-primary{margin-right:6px}
.portal-login{padding:9px 16px;white-space:nowrap}

/* Mobile nav toggle */
.nav-toggle{display:none;width:40px;height:40px;flex-direction:column;justify-content:center;align-items:center;gap:5px}
.nav-toggle span{width:22px;height:2px;background:var(--brown-deep);border-radius:2px;transition:all .3s}

/* ============ Buttons ============ */
.btn{
  display:inline-block;padding:11px 26px;border-radius:24px;font-size:14px;font-weight:600;
  transition:all .28s cubic-bezier(.25,.46,.45,.94);cursor:pointer;text-align:center;
  position:relative;overflow:hidden;
}
.btn-primary{
  background:var(--gold-amber);
  color:#fff;
  box-shadow:0 4px 16px var(--shadow-gold),0 1px 3px rgba(70,37,6,.08);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 8px 28px var(--glow-amber),0 2px 8px rgba(70,37,6,.12);
  color:#fff;
}
.btn-outline{
  background:transparent;color:#000000;
  border:1.5px solid var(--gold-amber);
}
.btn-outline:hover{
  background:var(--brown-deep);
  color:#fff;border-color:transparent;
}
.btn-light{
  background:#fff;color:#000000;
  border:1px solid var(--gray-border);
}
.btn-light:hover{
  background:var(--cream);color:#000000;border-color:#fff;
}
.btn-lg{font-size:16px;padding:14px 38px;border-radius:28px}

/* ============ Page Hero ============ */
.page-hero{
  position:relative;
  background-image:linear-gradient(rgba(70,37,6,0.6),rgba(70,37,6,0.6)),url("../pagehero-campus.jpg");
  background-size:cover;background-position:center;background-repeat:no-repeat;
  color:#fff;overflow:hidden;padding:50px 0 50px;height:400px;display:flex;align-items:center;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:transparent;
  pointer-events:none;
}
.page-hero::after{
  content:"";position:absolute;top:-30px;right:-30px;width:260px;height:260px;
  border:1.5px solid rgba(218,167,84,.12);border-radius:50%;pointer-events:none;
}
.page-hero-inner{position:relative;z-index:1;max-width:760px}
.breadcrumb{
  display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.55);
  margin-bottom:14px;
}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{opacity:.5}
.page-hero h1{font-size:34px;font-weight:800;line-height:1.25;margin-bottom:12px;letter-spacing:1px;text-shadow:0 2px 12px rgba(70,37,6,.3)}
.page-hero h1 .accent{color:#fff}
.page-hero-sub{font-size:16px;line-height:1.8;color:rgba(255,255,255,.88);margin-bottom:24px;max-width:680px}
.page-hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.page-hero-stats{display:flex;gap:40px;margin-top:36px;flex-wrap:wrap}
.page-hero-stat .num{font-size:30px;font-weight:800;color:#fff;line-height:1}
.page-hero-stat .label{font-size:13px;color:rgba(255,255,255,.7);margin-top:6px}

/* ============ Section ============ */
.section{padding:80px 0}
.section-gray{background:var(--gray-light)}
.section-navy{
  background:var(--brown-deep);
  color:#fff;
}
.section-title{text-align:center;margin-bottom:50px}
.section-title .cn{font-size:32px;font-weight:800;color:#000000;display:block;margin-bottom:8px;letter-spacing:1px}
.section-title .en{font-size:14px;color:#000000;font-weight:600;letter-spacing:3px;text-transform:uppercase;display:block}
.section-title .desc{font-size:15px;color:#000000;margin-top:14px;max-width:680px;margin-left:auto;margin-right:auto}
.section-navy .section-title .cn{color:#fff;text-shadow:0 1px 4px rgba(70,37,6,.3)}
.section-navy .section-title .en{color:#fff}
.section-navy .section-title .desc{color:rgba(255,255,255,.75)}
.section-title.left{text-align:left;margin-bottom:30px}
.section-title.left .desc{margin-left:0}

/* ============ Cards ============ */
.card{
  background:#fff;border:1px solid var(--gray-border);border-radius:16px;
  padding:30px;transition:all .3s cubic-bezier(.25,.46,.45,.94);
  box-shadow:0 2px 8px var(--shadow-warm);
}
.card:hover{
  transform:translateY(-5px);
  box-shadow:0 16px 48px rgba(70,37,6,.12),0 4px 16px var(--shadow-gold);
}
.card-icon{
  width:56px;height:56px;border-radius:14px;
  background:var(--gold-light);
  display:flex;align-items:center;justify-content:center;font-size:26px;
  margin-bottom:18px;
  box-shadow:0 2px 8px rgba(218,167,84,.1);
}
.card h3{font-size:18px;color:#000000;font-weight:700;margin-bottom:10px}
.card h3 .en{display:block;font-size:11px;color:#000000;font-weight:600;letter-spacing:2px;text-transform:uppercase;margin-top:3px}
.card p{font-size:14px;color:#000000;line-height:1.7}

/* Grid helpers */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}

/* ============ Process Steps ============ */
.process-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative}
.process-step{text-align:center;position:relative}
.process-step .step-num{
  width:64px;height:64px;border-radius:50%;
  background:var(--brown-deep);
  color:#fff;font-size:24px;font-weight:800;
  display:flex;align-items:center;justify-content:center;margin:0 auto 18px;
  border:3px solid var(--cream);
  box-shadow:0 4px 16px rgba(70,37,6,.15),inset 0 1px 0 rgba(255,255,255,.08);
}
.process-step h3{font-size:17px;color:#000000;font-weight:700;margin-bottom:10px}
.process-step p{font-size:13px;color:#000000;line-height:1.7}
.process-step .step-en{font-size:11px;color:#000000;font-weight:600;letter-spacing:1px;text-transform:uppercase;margin-bottom:6px;display:block}

/* ============ Stats Band ============ */
.stats-band{
  background:var(--brown-deep);
  color:#fff;padding:60px 0;
  position:relative;overflow:hidden;
}
.stats-band::before{
  content:"";position:absolute;inset:0;
  background:transparent;
  pointer-events:none;
}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;text-align:center;position:relative;z-index:1}
.stats-grid .item .num{font-size:40px;font-weight:800;color:#fff;line-height:1;text-shadow:0 2px 8px rgba(70,37,6,.3)}
.stats-grid .item .cn{font-size:15px;color:#fff;margin-top:10px;font-weight:600}
.stats-grid .item .en{font-size:11px;color:rgba(255,255,255,.55);margin-top:3px;letter-spacing:1px;text-transform:uppercase}

/* ============ Contact CTA ============ */
.contact-cta{
  background:var(--brown-deep);
  color:#fff;padding:70px 0;text-align:center;position:relative;overflow:hidden;
}
.contact-cta::before{
  content:"";position:absolute;inset:0;
  background:transparent;
  pointer-events:none;
}
.contact-cta-inner{position:relative;z-index:1}
.contact-cta h2{font-size:32px;font-weight:800;margin-bottom:14px;text-shadow:0 2px 8px rgba(70,37,6,.3)}
.contact-cta p{font-size:16px;color:rgba(255,255,255,.88);margin-bottom:28px}

/* ============ Footer ============ */
.site-footer{
  background:#2d1c04;
  color:rgba(255,255,255,.72);padding:60px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;margin-bottom:40px}
.footer-col h4{font-size:15px;color:#fff;font-weight:700;margin-bottom:18px;letter-spacing:.5px}
.footer-col p,.footer-col li{font-size:13px;line-height:1.9}
.footer-col li a:hover{color:#fff}
.footer-brand .logo-text .cn{color:#fff}
.footer-brand .logo-text .en{color:#fff}
.footer-brand p{margin-top:18px;font-size:13px;line-height:1.8}
.footer-qr{display:flex;gap:18px;margin-top:14px}
.footer-qr .qr-item{text-align:center}
.footer-qr .qr-item img{width:100px;height:100px;border-radius:8px;background:#fff;padding:6px}
.footer-qr .qr-item .name{font-size:12px;color:rgba(255,255,255,.8);margin-top:6px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.07);padding:20px 0;text-align:center;font-size:12px;color:rgba(255,255,255,.42)}

/* ============ Floating Contact ============ */
.float-contact{position:fixed;right:20px;bottom:30px;z-index:90;display:flex;flex-direction:column;gap:10px}
.float-btn{
  width:54px;height:54px;border-radius:50%;
  background:var(--gold-amber);
  color:#fff;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 22px var(--glow-amber),0 2px 6px rgba(70,37,6,.1);
  cursor:pointer;transition:all .28s cubic-bezier(.25,.46,.45,.94);position:relative;
}
.float-btn:hover{transform:scale(1.1) translateY(-2px);box-shadow:0 10px 34px var(--glow-amber),0 4px 12px rgba(70,37,6,.15)}
.float-btn svg{width:24px;height:24px;fill:#fff}
.float-btn .tooltip{
  position:absolute;right:64px;top:50%;transform:translateY(-50%);
  background:var(--brown-deep);color:#fff;font-size:12px;padding:6px 14px;border-radius:8px;
  white-space:nowrap;opacity:0;pointer-events:none;transition:opacity .2s;box-shadow:0 4px 12px rgba(70,37,6,.2);
}
.float-btn:hover .tooltip{opacity:1}

/* ============ Modal ============ */
.modal{
  position:fixed;inset:0;
  background:rgba(70,37,6,.86);
  z-index:200;display:none;align-items:center;justify-content:center;padding:20px;
}
.modal.open{display:flex}
.modal-box{
  background:#fff;border-radius:18px;max-width:520px;width:100%;overflow:hidden;
  animation:modalIn .35s cubic-bezier(.2,.8,.2,1);
  box-shadow:0 24px 80px rgba(70,37,6,.25);
}
@keyframes modalIn{from{transform:translateY(24px) scale(.96);opacity:0}to{transform:translateY(0) scale(1);opacity:1}}
.modal-head{
  background:var(--brown-deep);
  color:#fff;padding:24px 28px;display:flex;align-items:center;justify-content:space-between;
}
.modal-head h3{font-size:18px;font-weight:700}
.modal-close{width:32px;height:32px;color:#fff;font-size:22px;line-height:1;transition:opacity .2s;border-radius:50%;display:flex;align-items:center;justify-content:center}
.modal-close:hover{background:rgba(255,255,255,.15)}
.modal-body{padding:28px}
.modal-body .contact-row{display:flex;align-items:center;gap:14px;padding:14px 0;border-bottom:1px solid var(--gray-border)}
.modal-body .contact-row:last-child{border-bottom:0}
.modal-body .contact-row .ic{
  width:42px;height:42px;border-radius:12px;
  background:var(--gold-light);
  color:#000000;
  display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0;
}
.modal-body .contact-row .info .label{font-size:12px;color:#000000}
.modal-body .contact-row .info .val{font-size:15px;color:#000000;font-weight:600}
.modal-qr{display:flex;gap:20px;justify-content:center;margin-top:20px}
.modal-qr .qr-item{text-align:center}
.modal-qr .qr-item img{width:130px;height:130px;border-radius:8px;border:1px solid var(--gray-border)}
.modal-qr .qr-item .name{font-size:13px;color:#000000;font-weight:600;margin-top:8px}

/* ============ FAQ ============ */
.faq-item{
  background:#fff;border:1px solid var(--gray-border);border-radius:14px;
  margin-bottom:14px;overflow:hidden;transition:all .25s ease;
  box-shadow:0 1px 4px var(--shadow-warm);
}
.faq-item:hover{box-shadow:0 6px 20px rgba(70,37,6,.08)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;
  padding:18px 24px;font-size:15px;font-weight:600;color:#000000;cursor:pointer;
}
.faq-q .icon{
  width:28px;height:28px;border-radius:50%;
  background:var(--gold-light);
  color:#000000;
  display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0;
  transition:transform .35s cubic-bezier(.25,.46,.45,.94);
}
.faq-item.open .faq-q .icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease;padding:0 24px}
.faq-item.open .faq-a{max-height:300px;padding:0 24px 18px}
.faq-a p{font-size:14px;color:#000000;line-height:1.8}

/* ============ Tabs ============ */
.tab-nav{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;margin-bottom:34px}
.tab-btn{
  padding:10px 26px;border-radius:22px;font-size:14px;font-weight:600;
  background:#fff;border:1.5px solid var(--gray-border);color:#000000;cursor:pointer;
  transition:all .25s ease;
}
.tab-btn:hover{border-color:#000000;color:#000000}
.tab-btn.active{
  background:var(--gold-amber);
  color:#fff;border-color:transparent;
  box-shadow:0 4px 14px var(--shadow-gold);
}
.tab-pane{display:none}
.tab-pane.active{display:block}

/* ============ Feature List ============ */
.feature-list{display:flex;flex-direction:column;gap:14px}
.feature-list li{
  display:flex;align-items:flex-start;gap:12px;font-size:14px;color:#000000;line-height:1.7;
}
.feature-list li::before{
  content:"\2713";flex-shrink:0;width:22px;height:22px;border-radius:50%;
  background:var(--gold-light);
  color:#000000;font-size:13px;font-weight:700;
  display:flex;align-items:center;justify-content:center;margin-top:2px;
  box-shadow:0 1px 4px rgba(218,167,84,.12);
}

/* ============ Pricing / Plan Cards ============ */
.plan-card{
  background:#fff;border-radius:18px;overflow:hidden;
  border:1px solid var(--gray-border);
  transition:all .3s cubic-bezier(.25,.46,.45,.94);
  display:flex;flex-direction:column;
  box-shadow:0 2px 8px var(--shadow-warm);
}
.plan-card:hover{
  transform:translateY(-5px);
  box-shadow:0 18px 52px rgba(70,37,6,.12),0 6px 20px var(--shadow-gold);
}
.plan-card.featured{
  border:2px solid var(--gold-amber);position:relative;
  box-shadow:0 6px 24px var(--shadow-gold);
}
.plan-card.featured::before{
  content:"推荐";position:absolute;top:0;right:0;
  background:var(--gold-amber);
  color:#fff;
  font-size:12px;font-weight:700;padding:5px 18px;border-bottom-left-radius:12px;
}
.plan-head{padding:30px 28px 22px;text-align:center;border-bottom:1px solid var(--gray-border)}
.plan-head h3{font-size:20px;color:#000000;font-weight:700;margin-bottom:10px}
.plan-head .tagline{font-size:13px;color:#000000;font-weight:600;letter-spacing:1px}
.plan-body{padding:24px 28px;flex:1}
.plan-body p{font-size:14px;color:#000000;line-height:1.7;margin-bottom:18px}
.plan-cta{padding:0 28px 28px;text-align:center}
.plan-cta .btn{width:100%}

/* ============ Tag Badges ============ */
.badge{
  display:inline-block;font-size:11px;font-weight:700;padding:4px 14px;border-radius:10px;
  letter-spacing:.5px;
}
.badge-gold{background:var(--gold-light);color:#000000}
.badge-navy{background:var(--brown-deep);color:#fff}
.badge-light{background:var(--gray-light);color:#000000}

/* ============ Responsive ============ */
@media (max-width:1200px){
  .header-phone{display:none}
}
@media (max-width:992px){
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .process-steps{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:24px}
  .main-nav{
    display:none;position:fixed;top:70px;left:0;right:0;
    flex:none;flex-direction:column;background:#fff;padding:20px;gap:0;
    border-bottom:1px solid var(--gray-border);box-shadow:0 8px 24px rgba(70,37,6,.10);
  }
  .main-nav.open{display:flex}
  .main-nav > li{width:100%;flex:none}
  .main-nav > li > a{padding:14px;border-radius:0;border-bottom:1px solid var(--gray-light);text-align:left;white-space:normal}
  .dropdown{position:static;transform:none;opacity:1;visibility:visible;display:none;
    box-shadow:none;border:0;padding:0 0 0 20px}
  .main-nav > li:hover .dropdown{display:block}
  .nav-toggle{display:flex}
}
@media (max-width:680px){
  .header-phone{display:none}
  .page-hero{padding:40px 0 50px}
  .page-hero h1{font-size:28px}
  .page-hero-sub{font-size:14px}
  .section{padding:50px 0}
  .section-title .cn{font-size:24px}
  .process-steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr 1fr;gap:18px}
  .logo-text .cn{font-size:15px}
  .btn{padding:9px 20px;font-size:13px}
  .page-hero-stats{gap:24px}
}
@media (max-width:520px){
  .header-right{gap:6px;left:0}
  .header-right > .btn-primary{display:none}
  .portal-login{padding:8px 12px}
}