/* KAelo · 共享样式 · 黑白极简圆润风 */

/* ------------------------------------------------------------------ */
/* 自定义字体（ZQKfreefont，单文件，英文+数字，无中文）                  */
/* 把你的字体文件放到 /frontend/assets/fonts/ZQKfreefont.ttf 即可生效   */
/* ------------------------------------------------------------------ */
@font-face{
  font-family:"KAelo Display";
  font-style:normal;
  font-weight:400;
  font-display:swap;
  src:url("fonts/ZQKfreefont.ttf") format("truetype");
}

:root{
  --bg:#ffffff;
  --fg:#0a0a0a;
  --muted:#6b6b6b;
  --line:#ececec;
  --card:#fafafa;
  --inv-bg:#0a0a0a;
  --inv-fg:#ffffff;
  --radius:24px;
  --radius-sm:16px;
  --radius-pill:999px;
  --shadow:0 1px 2px rgba(0,0,0,.04), 0 8px 24px rgba(0,0,0,.04);
  --maxw:1080px;
  /* 自定义字体优先（英文/数字），缺字符时回退到系统中英文体。  */
  --sans:"KAelo Display",-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--sans);
  background:var(--bg);color:var(--fg);line-height:1.65;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  /* 让英文优先走自定义字体，中文自动退回后面的中文字体 */
  font-feature-settings:"kern" 1,"liga" 1;
}
/* 品牌文字、大标题强制用自定义字体；若字还没放进来则回退系统 */
.brand,h1,h2,h3,h4,.hero-title,.stat-num,.counter{
  font-family:var(--sans);
}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
main{min-height:60vh}

/* NAV (JS 注入到 #nav-mount) */
nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.85);
  backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{
  display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;
  font-weight:800;font-size:22px;letter-spacing:-.03em;line-height:1;
  color:var(--fg);transition:.2s;
}
.nav-links{display:flex;gap:4px;align-items:center}
.nav-links a{padding:8px 14px;border-radius:var(--radius-pill);font-size:14px;color:var(--muted);transition:.2s}
.nav-links a:hover{background:var(--card);color:var(--fg)}
.nav-links a.active{color:var(--fg);background:var(--card)}
.nav-cta{padding:10px 18px;border-radius:var(--radius-pill);background:var(--fg);color:#fff !important;font-size:14px;font-weight:600}
.nav-cta.ghost{background:#fff;border:1px solid var(--line);color:var(--fg) !important;margin-right:8px}
.nav-cta.ghost:hover{border-color:var(--fg)}
.burger{display:none;background:none;border:none;cursor:pointer;font-size:22px;color:var(--fg)}

/* PAGE HEAD (内页通用) */
.page-head{padding:72px 0 40px;border-bottom:1px solid var(--line)}
.pill{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:var(--radius-pill);
  background:var(--card);border:1px solid var(--line);font-size:13px;color:var(--muted);margin-bottom:20px}
.pill .live{width:8px;height:8px;border-radius:50%;background:#22c55e;box-shadow:0 0 0 4px rgba(34,197,94,.15)}
h1.page-title{font-size:clamp(32px,5vw,52px);line-height:1.08;letter-spacing:-.03em;font-weight:800;margin-bottom:16px}
h1.page-title em{font-style:normal;background:var(--fg);color:#fff;padding:0 .15em;border-radius:8px}
.page-sub{font-size:17px;color:var(--muted);max-width:640px}

/* HERO (首页) */
header.hero{padding:104px 0 80px;position:relative}
.hero-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:48px;align-items:center;margin-bottom:40px}
h1.hero-title{font-size:clamp(34px,5.4vw,58px);line-height:1.05;letter-spacing:-.03em;font-weight:800;margin-bottom:20px}
h1.hero-title em{font-style:normal;background:var(--fg);color:#fff;padding:0 .15em;border-radius:10px}
.hero-sub{font-size:17px;color:var(--muted);max-width:560px;margin-bottom:32px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.hero-stats .stat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-sm);padding:20px 22px;transition:.2s}
.hero-stats .stat:hover{transform:translateY(-2px);box-shadow:var(--shadow);background:#fff}
.hero-stats .stat .num{font-size:26px;font-weight:800;letter-spacing:-.02em;margin-bottom:2px}
.hero-stats .stat .lab{font-size:12px;color:var(--muted)}
.hero-side{background:var(--inv-bg);color:var(--inv-fg);border-radius:var(--radius);padding:32px}
.hero-side .kicker{color:#a3a3a3;margin-bottom:14px}
.hero-side h3{font-size:22px;font-weight:800;margin-bottom:12px;letter-spacing:-.02em}
.hero-side p{font-size:14px;color:#bdbdbd;margin-bottom:18px;line-height:1.7}
.hero-side .btn{width:100%;justify-content:center;background:#fff;color:#0a0a0a}
.hero-side .btn:hover{transform:translateY(-2px)}

/* SECTION */
section{padding:72px 0;border-top:1px solid var(--line)}
section:first-of-type{border-top:none}
.section-head{max-width:680px;margin-bottom:40px}
.kicker{font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:12px}
h2{font-size:clamp(26px,4vw,36px);letter-spacing:-.02em;font-weight:800;margin-bottom:14px;line-height:1.15}
.section-sub{font-size:16px;color:var(--muted)}

/* CARDS */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:.25s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);background:#fff;border-color:#d4d4d4}
.card .ico{width:44px;height:44px;border-radius:14px;background:var(--fg);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:18px}
.card h3{font-size:18px;font-weight:700;margin-bottom:8px;letter-spacing:-.01em}
.card p{font-size:14px;color:var(--muted);flex:1}
.card a.more{display:inline-block;margin-top:18px;font-size:13px;font-weight:600;color:var(--fg);align-self:flex-start}
.card a.more::after{content:' →';transition:.2s}
.card a.more:hover::after{margin-left:4px}

/* STEPS */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:step}
.step{position:relative;padding:28px 24px;border-radius:var(--radius);background:var(--card);border:1px solid var(--line);transition:.25s}
.step:hover{transform:translateY(-3px);box-shadow:var(--shadow);background:#fff}
.step::before{counter-increment:step;content:counter(step,decimal-leading-zero);
  font-family:var(--mono);font-size:24px;font-weight:800;color:var(--fg);display:block;margin-bottom:14px;letter-spacing:-.02em}
.step h3{font-size:17px;margin-bottom:8px;letter-spacing:-.01em}
.step p{font-size:14px;color:var(--muted)}

/* SPECS TABLE */
.specs-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:var(--card)}
table{width:100%;border-collapse:collapse;min-width:680px}
th,td{text-align:left;padding:18px 22px;border-bottom:1px solid var(--line);font-size:14px}
th{font-weight:700;background:#fff;color:var(--muted);font-size:13px;text-transform:uppercase;letter-spacing:.04em}
tr:last-child td{border-bottom:none}
td .tag{display:inline-block;padding:3px 10px;border-radius:var(--radius-pill);font-size:12px;font-weight:600}
.tag-open{background:#ecfccb;color:#3f6212}
.tag-limited{background:#fef3c7;color:#92400e}
.tag-full{background:#fee2e2;color:#991b1b}
.note{font-size:12px;color:var(--muted);margin-top:8px}

/* RULES list */
.rules{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:8px}
.rule{display:flex;gap:14px;padding:18px 20px;border:1px solid var(--line);border-radius:var(--radius-sm);background:#fff}
.rule .x{width:28px;height:28px;border-radius:50%;background:#fee2e2;color:#991b1b;
  display:flex;align-items:center;justify-content:center;font-weight:700;flex-shrink:0}
.rule .ok{background:#ecfccb;color:#3f6212}
.rule b{font-size:14px;display:block;margin-bottom:4px}
.rule p{font-size:13px;color:var(--muted)}

/* FINANCE */
.fin-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:24px}
.fin-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.fin-row{display:flex;justify-content:space-between;align-items:center;padding:13px 0;border-bottom:1px dashed var(--line)}
.fin-row:last-of-type{border-bottom:none}
.fin-row .label{font-size:14px;color:var(--muted)}
.fin-row .val{font-family:var(--mono);font-weight:700}
.fin-total{margin-top:18px;padding-top:18px;border-top:2px solid var(--fg);display:flex;justify-content:space-between;align-items:center}
.fin-total .val{font-size:22px}
.bar-row{margin-bottom:18px}
.bar-row .lab{display:flex;justify-content:space-between;font-size:13px;margin-bottom:6px}
.bar-track{height:10px;border-radius:var(--radius-pill);background:#eee;overflow:hidden}
.bar-fill{height:100%;border-radius:var(--radius-pill);background:var(--fg)}
.bar-fill.alt{background:#bdbdbd}

/* DONATE */
.donate{background:var(--inv-bg);color:var(--inv-fg);border-radius:var(--radius);padding:56px 40px;text-align:center}
.donate h2{color:#fff}
.donate .section-sub{color:#a3a3a3}
.qr-grid{display:flex;gap:24px;justify-content:center;flex-wrap:wrap;margin-top:40px}
.qr-card{background:#fff;color:var(--fg);border-radius:var(--radius-sm);padding:24px;width:220px;text-align:center;transition:.25s}
.qr-card:hover{transform:translateY(-3px);box-shadow:0 8px 24px rgba(0,0,0,.3)}
.qr-frame{width:172px;height:172px;border-radius:14px;background:#fff;
  margin:0 auto 16px;display:flex;align-items:center;justify-content:center;overflow:hidden;border:1px solid var(--line)}
.qr-frame img{width:100%;height:100%;object-fit:cover;border-radius:14px;display:block}
.qr-empty{background:#fff;width:80%;height:80%;border-radius:8px;display:flex;align-items:center;justify-content:center;
  font-size:11px;color:#999;text-align:center;padding:8px;border:1px dashed #ccc}
.qr-card h4{font-size:15px;margin-bottom:4px}
.qr-card p{font-size:12px;color:var(--muted)}
.qr-note{margin-top:18px;font-size:11px;color:#737373;font-style:italic}
.donate-meta{margin-top:28px;font-size:13px;color:#a3a3a3}
.donate-meta code{font-family:var(--mono);background:rgba(255,255,255,.08);padding:2px 8px;border-radius:6px;color:#fff}
.donate-meta .btn-ghost{color:#fff !important;border-color:rgba(255,255,255,.2);background:transparent}

/* FORM */
.apply-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.apply-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:32px}
.apply-card h3{font-size:20px;margin-bottom:14px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:600;margin-bottom:6px}
.field input,.field select,.field textarea{width:100%;padding:12px 14px;border:1px solid var(--line);
  border-radius:12px;font-size:14px;font-family:inherit;background:#fff;transition:.2s}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--fg)}
.field textarea{min-height:96px;resize:vertical}
.form-msg{margin-top:14px;padding:12px 16px;border-radius:12px;font-size:14px;display:none}
.form-msg.ok{display:block;background:#ecfccb;color:#3f6212}
.form-msg.err{display:block;background:#fee2e2;color:#991b1b}

/* CONTACT */
.contact-list{display:flex;flex-direction:column;gap:14px}
.contact-item{display:flex;align-items:center;gap:14px;padding:14px 16px;border:1px solid var(--line);border-radius:14px;background:#fff;transition:.2s}
.contact-item:hover{border-color:var(--fg)}
.contact-item .ci-ico{width:38px;height:38px;border-radius:12px;background:var(--fg);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;flex-shrink:0}
.contact-item .ci-text b{display:block;font-size:14px}
.contact-item .ci-text span{font-size:12px;color:var(--muted);font-family:var(--mono)}

/* STATUS lookup */
.status-box{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:32px;margin-top:24px}
.status-result{margin-top:20px;padding:20px;border-radius:var(--radius-sm);display:none}
.status-result.show{display:block}
.status-result.pending{background:#fef3c7;color:#92400e}
.status-result.approved{background:#ecfccb;color:#3f6212}
.status-result.rejected{background:#fee2e2;color:#991b1b}

/* BUTTONS */
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 24px;border-radius:var(--radius-pill);
  font-weight:600;font-size:15px;transition:.2s;cursor:pointer;border:1px solid transparent;font-family:inherit}
.btn-primary{background:var(--fg);color:#fff}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--fg)}
.btn-ghost:hover{border-color:var(--fg)}
.btn-block{width:100%;justify-content:center}

/* FOOTER (JS 注入) */
footer{padding:64px 0 32px;border-top:1px solid var(--line);background:var(--card);color:var(--muted);font-size:13px}
footer .foot-brand{display:flex;flex-direction:column;align-items:flex-start;gap:18px}
footer .brand{
  display:inline-flex;align-items:center;
  font-weight:800;font-size:30px;letter-spacing:-.02em;line-height:1;color:var(--fg);
  transition:.2s;
}
footer .brand:hover{opacity:.7}
footer .foot-brand .foot-tag{font-size:13px;color:var(--muted);line-height:1.75;max-width:280px;margin:0}
footer .foot-social{display:flex;gap:8px;margin:0}
@media(max-width:520px){footer .brand{font-size:24px}}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:48px}
.foot-col{display:flex;flex-direction:column;gap:10px}
.foot-col h4{font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--fg);margin-bottom:6px}
.foot-col a{color:var(--muted);font-size:13px;transition:.2s}
.foot-col a:hover{color:var(--fg)}
.foot-brand .foot-tag{font-size:13px;color:var(--muted);line-height:1.7;margin:14px 0 16px;max-width:280px}
.foot-social{display:flex;gap:8px}
.foot-social a{width:34px;height:34px;border-radius:10px;background:#fff;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;color:var(--fg);transition:.2s}
.foot-social a:hover{background:var(--fg);color:#fff;border-color:var(--fg);transform:translateY(-2px)}
.foot-bottom{display:flex;justify-content:space-between;align-items:center;padding-top:24px;border-top:1px solid var(--line);flex-wrap:wrap;gap:12px}
.foot-copy{font-size:12px;color:var(--muted)}
.foot-meta{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--muted);flex-wrap:wrap}
.foot-meta a{color:var(--muted)}
.foot-meta a:hover{color:var(--fg)}
.dot-sep{color:#d4d4d4}

/* TOAST */
.copy-toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:var(--fg);color:#fff;
  padding:10px 18px;border-radius:var(--radius-pill);font-size:13px;opacity:0;transition:.3s;pointer-events:none;z-index:99}
.copy-toast.show{opacity:1}

/* responsive */
@media (max-width:980px){
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-stats{margin-top:0}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:860px){
  .nav-links{display:none;position:absolute;top:64px;left:0;right:0;flex-direction:column;background:#fff;
    border-bottom:1px solid var(--line);padding:12px;align-items:stretch}
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 14px}
  .nav-cta.ghost{margin:0 0 8px;text-align:center}
  .burger{display:block}
  .grid-3,.steps,.rules{grid-template-columns:1fr}
  .fin-grid,.apply-grid{grid-template-columns:1fr}
  .hero-stats{grid-template-columns:1fr 1fr;gap:12px}
  .hero-stats .stat .num{font-size:22px}
  .donate{padding:40px 20px}
  .foot-grid{grid-template-columns:1fr;gap:24px}
  .foot-bottom{flex-direction:column;align-items:flex-start}
}

/* ===== 后端状态徽章 ===== */
.status-banner{
  display:flex;align-items:center;gap:8px;padding:10px 14px;border-radius:var(--radius-pill);
  font-size:13px;font-weight:600;margin-bottom:20px;border:1px solid var(--line);background:var(--card);
  width:fit-content;max-width:100%;
}
.status-banner .dot{width:8px;height:8px;border-radius:50%;flex-shrink:0}
.status-banner.checking{color:var(--muted)}
.status-banner.checking .dot{background:#9ca3af;animation:pulse 1.4s ease-in-out infinite}
.status-banner.online{background:#ecfccb;color:#3f6212;border-color:#d9f99d}
.status-banner.online .dot{background:#22c55e;box-shadow:0 0 0 4px rgba(34,197,94,.15)}
.status-banner.offline{background:#fee2e2;color:#991b1b;border-color:#fecaca}
.status-banner.offline .dot{background:#ef4444}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(.85)}}

/* ===== 信息提醒框（替代 form-msg 作为页面级降级提示） ===== */
.alert-box{
  display:flex;gap:14px;align-items:flex-start;
  padding:16px 18px;border-radius:16px;margin-bottom:20px;
  border:1px solid var(--line);background:#fff;
  font-size:14px;line-height:1.6;
}
.alert-box .ico{
  width:28px;height:28px;border-radius:10px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;
}
.alert-box b{font-size:14px;color:var(--fg);display:inline-block;margin-right:4px}
.alert-box.err{background:#fff5f5;border-color:#fecaca;color:#991b1b}
.alert-box.err .ico{background:#fee2e2;color:#991b1b}
.alert-box.warn{background:#fffbeb;border-color:#fde68a;color:#92400e}
.alert-box.warn .ico{background:#fef3c7;color:#92400e}
.alert-box.ok{background:#f7fee7;border-color:#d9f99d;color:#3f6212}
.alert-box.ok .ico{background:#ecfccb;color:#3f6212}