/* ============================================================
   鸽舍宝 · 信鸽管理系统 登录页样式表（飞牛 fnOS 官网布局 · 功能预览纵向单列大图版）
   功能预览区：每个模块一张大图在上、一段简介在下，纵向单列依次排列（已取消轮播 / 2列网格）。
   登录功能相关 class / id / 显隐类(.show/.active) 全部沿用原结构，api.js 与 index_login.js 不受影响。
   改品牌色只需改下面 --pg-primary / --pg-accent 两个变量。
   ============================================================ */

:root{
    --pg-primary:#1f6cff;
    --pg-accent:#3f8cff;
    --pg-ink:#0a1020;
    --pg-sub:#6b7488;
    --pg-grad:linear-gradient(135deg,#1f6cff 0%,#3f8cff 100%);
    --pg-radius:24px;
    --pg-border:#e9edf5;
    --pg-soft:0 40px 90px -34px rgba(22,44,92,.30);
    --pg-soft-sm:0 14px 34px -16px rgba(22,44,92,.22);
}

/* ===== 基础重置 ===== */
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
    font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
    font-size:14px;color:var(--pg-ink);min-height:100vh;
    background:
      radial-gradient(1100px 520px at 50% -8%,rgba(31,108,255,.08),transparent 60%),
      linear-gradient(180deg,#ffffff 0%,#f4f7fc 100%);
    background-attachment:fixed;overflow-x:hidden;
}
a{color:var(--pg-primary);text-decoration:none;transition:.25s;}
a:hover{color:#0b4fd6;}

/* ===== 顶部公告条 ===== */
.top-notice{position:relative;z-index:60;text-align:center;font-size:13px;color:#475069;
    padding:10px 18px;background:linear-gradient(90deg,#eef4ff,#f3f7ff);
    border-bottom:1px solid #e6ecf7;}
.top-notice a{color:var(--pg-primary);font-weight:600;}
.top-notice .notice-tag{display:inline-block;font-size:11px;font-weight:700;color:#fff;
    background:var(--pg-grad);padding:2px 9px;border-radius:999px;margin-right:8px;vertical-align:1px;}

/* ===== 顶部导航（sticky 白导航） ===== */
.topbar{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.86);
    backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid rgba(233,237,245,.9);}
.topbar-inner{max-width:1200px;margin:0 auto;height:70px;display:flex;align-items:center;
    gap:30px;padding:0 28px;}
.topbar-brand{display:flex;align-items:center;gap:11px;font-size:19px;font-weight:800;
    color:var(--pg-ink);letter-spacing:.2px;white-space:nowrap;}
.topbar-brand .logo-icon{width:38px;height:38px;border-radius:11px;background:var(--pg-grad);
    display:flex;align-items:center;justify-content:center;color:#fff;font-size:20px;
    box-shadow:0 12px 24px -8px rgba(31,108,255,.6);}
.topbar-nav{display:flex;align-items:center;gap:26px;margin-left:14px;}
.topbar-nav a{font-size:14px;color:#5b6577;font-weight:500;}
.topbar-nav a:hover{color:var(--pg-primary);}
.topbar-cta{margin-left:auto;display:flex;align-items:center;gap:16px;white-space:nowrap;}
.topbar-cta a:first-child{font-size:14px;color:#5b6577;font-weight:500;}
.topbar-cta a:first-child:hover{color:var(--pg-primary);}
.cta-login{font-size:14px;font-weight:600;color:var(--pg-primary);padding:8px 16px;border-radius:999px;
    border:1.5px solid rgba(31,108,255,.35);}
.cta-login:hover{background:rgba(31,108,255,.08);}
.cta-reg{font-size:14px;font-weight:600;color:#fff;padding:9px 20px;border-radius:999px;
    background:var(--pg-grad);box-shadow:0 10px 22px -10px rgba(31,108,255,.7);}
.cta-reg:hover{color:#fff;transform:translateY(-1px);}

/* ===== 居中 Hero ===== */
.hero{position:relative;z-index:2;padding:74px 24px 40px;text-align:center;}
.hero-inner{max-width:900px;margin:0 auto;}
.hero-badge{display:inline-flex;align-items:center;gap:9px;font-size:13px;font-weight:600;
    color:var(--pg-primary);background:#fff;border:1px solid rgba(31,108,255,.22);
    padding:8px 18px;border-radius:999px;margin-bottom:24px;letter-spacing:.3px;box-shadow:var(--pg-soft-sm);}
.hero-badge::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--pg-accent);
    box-shadow:0 0 0 4px rgba(63,140,255,.16);}
.hero-title{font-size:clamp(34px,5.4vw,58px);font-weight:800;line-height:1.18;letter-spacing:-1px;color:var(--pg-ink);}
.hero-title span{background:linear-gradient(92deg,#1f6cff,#3f8cff);
    -webkit-background-clip:text;background-clip:text;color:transparent;}
.hero-sub{font-size:16px;line-height:1.8;color:var(--pg-sub);max-width:680px;margin:22px auto 0;}
.hero-pills{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:26px;}
.hero-pill{font-size:13px;font-weight:600;color:#3a445c;background:#fff;border:1px solid #e6ecf7;
    padding:8px 18px;border-radius:999px;box-shadow:0 8px 18px -12px rgba(22,44,92,.4);}
.hero-actions{display:flex;gap:16px;justify-content:center;margin-top:34px;flex-wrap:wrap;}
.hero-btn{font-size:15px;font-weight:700;padding:14px 32px;border-radius:14px;transition:.25s;}
.hero-btn.primary{color:#fff;background:var(--pg-grad);box-shadow:0 16px 30px -10px rgba(31,108,255,.65);}
.hero-btn.primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 22px 40px -10px rgba(31,108,255,.75);}
.hero-btn.ghost{color:var(--pg-primary);background:#fff;border:1.5px solid rgba(31,108,255,.32);}
.hero-btn.ghost:hover{background:rgba(31,108,255,.07);}

/* ===== 登录弹窗（点右上角登录才弹出；内部结构 / class / 显隐类与原登录卡完全一致） ===== */
#loginModal .modal-box{padding:0;width:480px;overflow:hidden;}
#loginModal .login-card{width:100%;max-width:none;background:#fff;border-radius:0;
    box-shadow:none;padding:44px 36px 36px;border:none;position:relative;}
.login-modal-close{position:absolute;top:16px;right:16px;z-index:5;background:#f2f5fb;border:none;
    width:34px;height:34px;border-radius:50%;font-size:15px;color:#8a93a8;cursor:pointer;line-height:1;transition:.2s;}
.login-modal-close:hover{color:var(--pg-primary);background:#e7ecf6;}
.login-card .card-title{font-size:26px;font-weight:800;color:var(--pg-ink);margin-bottom:6px;letter-spacing:-.3px;}
.login-card .card-subtitle{font-size:14px;color:#9098ac;margin-bottom:26px;}

.login-tabs{display:flex;gap:6px;background:#eef1f7;border-radius:14px;padding:5px;margin-bottom:24px;}
.login-tabs .tab-btn{flex:1;padding:11px 0;border:none;background:none;border-radius:10px;
    font-size:14px;color:#667085;cursor:pointer;font-weight:600;transition:.25s;}
.login-tabs .tab-btn:hover{color:var(--pg-primary);}
.login-tabs .tab-btn.active{background:#fff;color:var(--pg-primary);box-shadow:0 8px 18px -6px rgba(31,108,255,.4);}

.tab-panel{display:none;}.tab-panel.active{display:block;animation:fadeUp .35s ease;}
@keyframes fadeUp{from{opacity:0;transform:translateY(8px);}to{opacity:1;transform:none;}}

.form-item{margin-bottom:18px;}
.form-item label{display:block;font-size:13px;color:#475069;margin-bottom:8px;font-weight:600;}
.form-input-wrapper{position:relative;}
.form-input{width:100%;height:48px;padding:0 16px;border:1.5px solid #e4e8f0;border-radius:13px;
    font-size:14px;color:var(--pg-ink);background:#f6f8fc;transition:.25s;outline:none;}
.form-input:focus{border-color:var(--pg-primary);background:#fff;box-shadow:0 0 0 4px rgba(31,108,255,.13);}
.form-input::placeholder{color:#aab2c5;}

.captcha-row{display:flex;gap:12px;}
.captcha-row .form-input{flex:1;}
.captcha-img{height:48px;border-radius:13px;cursor:pointer;border:1.5px solid #e4e8f0;min-width:98px;}

.btn-send-code{height:48px;padding:0 18px;border:none;border-radius:13px;background:rgba(31,108,255,.1);
    color:var(--pg-primary);font-size:13px;font-weight:600;cursor:pointer;white-space:nowrap;transition:.25s;}
.btn-send-code:hover:not(:disabled){background:var(--pg-primary);color:#fff;}
.btn-send-code:disabled{background:#eef1f7;color:#aab2c5;cursor:not-allowed;}

.form-extra{display:flex;justify-content:space-between;align-items:center;margin:4px 0 22px;font-size:13px;}
.form-extra label{display:flex;align-items:center;gap:7px;color:#667085;cursor:pointer;}
.form-extra a{color:var(--pg-primary);font-weight:500;}

.btn-primary{width:100%;height:50px;background:var(--pg-grad);color:#fff;border:none;border-radius:14px;
    font-size:16px;font-weight:700;cursor:pointer;transition:.25s;letter-spacing:4px;
    box-shadow:0 16px 30px -10px rgba(31,108,255,.65);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 22px 38px -10px rgba(31,108,255,.75);}
.btn-primary:active{transform:translateY(0);}
.btn-primary:disabled{background:#c6d2e6;box-shadow:none;cursor:not-allowed;transform:none;}

.card-footer{margin-top:22px;text-align:center;font-size:13px;color:#9098ac;}
.card-footer a{color:var(--pg-primary);font-weight:600;}

/* ===== 通用容器 / 分节标题 ===== */
.container{position:relative;z-index:2;max-width:1100px;margin:0 auto;padding:54px 28px;scroll-margin-top:88px;}
.section-head{text-align:center;max-width:720px;margin:0 auto 38px;}
.section-eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:1px;
    color:var(--pg-primary);margin-bottom:12px;text-transform:uppercase;}
.section-title{font-size:clamp(26px,3.4vw,38px);font-weight:800;letter-spacing:-.6px;color:var(--pg-ink);}
.section-title span{background:linear-gradient(92deg,#1f6cff,#3f8cff);
    -webkit-background-clip:text;background-clip:text;color:transparent;}
.section-sub{font-size:15px;line-height:1.75;color:var(--pg-sub);margin-top:14px;}

/* ===== 功能图文板块（纵向单列：每块大图在上、简介在下） ===== */
.feat-grid{display:flex;flex-direction:column;gap:40px;}
.feat-block{background:#fff;border:1px solid #eef1f7;border-radius:22px;overflow:hidden;
    box-shadow:var(--pg-soft-sm);transition:.28s;display:flex;flex-direction:column;}
.feat-block:hover{transform:translateY(-6px);box-shadow:var(--pg-soft);border-color:rgba(31,108,255,.28);}
.feat-window{border-bottom:1px solid #eef1f7;background:#f4f7fc;}
.feat-chrome{display:flex;align-items:center;gap:10px;padding:11px 16px;border-bottom:1px solid #eef1f7;}
.feat-dots{display:flex;gap:6px;}
.feat-dots i{width:10px;height:10px;border-radius:50%;background:#d5dbe6;}
.feat-dots i:nth-child(1){background:#ff5f57;}
.feat-dots i:nth-child(2){background:#febc2e;}
.feat-dots i:nth-child(3){background:#28c840;}
.feat-url{flex:1;text-align:center;font-size:12px;color:#9aa4b8;background:#fff;border:1px solid #e9edf5;
    border-radius:8px;padding:6px 10px;}
.feat-window img{width:100%;height:auto;max-width:100%;display:block;object-fit:contain;background:#f4f7fc;}
.feat-info{padding:28px 30px 32px;}
.feat-no{display:inline-block;font-size:12px;font-weight:800;color:var(--pg-primary);
    background:rgba(31,108,255,.1);border-radius:999px;padding:3px 12px;margin-bottom:12px;}
.feat-info h3{font-size:23px;font-weight:800;color:var(--pg-ink);letter-spacing:-.3px;}
.feat-tagline{font-size:15px;font-weight:700;margin-top:7px;
    background:linear-gradient(92deg,#1f6cff,#3f8cff);-webkit-background-clip:text;background-clip:text;color:transparent;}
.feat-info p{font-size:14px;line-height:1.85;color:var(--pg-sub);margin-top:13px;max-width:880px;}
.feat-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.feat-tags span{font-size:12.5px;color:var(--pg-primary);padding:6px 14px;border-radius:999px;
    background:rgba(31,108,255,.08);border:1px solid rgba(31,108,255,.18);font-weight:500;}

/* ===== 六大能力卡片 ===== */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.feature-card{background:#fff;border:1px solid #eef1f7;border-radius:20px;padding:30px 26px;
    box-shadow:var(--pg-soft-sm);transition:.28s;}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--pg-soft);border-color:rgba(31,108,255,.28);}
.fc-ic{width:54px;height:54px;border-radius:15px;background:var(--pg-grad);color:#fff;font-size:24px;
    display:flex;align-items:center;justify-content:center;margin-bottom:18px;box-shadow:0 14px 26px -10px rgba(31,108,255,.6);}
.feature-card h4{font-size:18px;font-weight:800;color:var(--pg-ink);margin-bottom:9px;}
.feature-card p{font-size:14px;line-height:1.7;color:var(--pg-sub);}

/* ===== 为什么选择（三 icon 卡） ===== */
.why-zone{background:linear-gradient(180deg,#f4f8ff 0%,#eef3fb 100%);border-radius:30px;
    border:1px solid #e6ecf7;box-shadow:var(--pg-soft-sm);}
.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;}
.why-card{background:#fff;border:1px solid #eef1f7;border-radius:20px;padding:34px 28px;text-align:center;
    box-shadow:var(--pg-soft-sm);transition:.28s;}
.why-card:hover{transform:translateY(-5px);}
.wc-ic{width:64px;height:64px;border-radius:18px;background:var(--pg-grad);color:#fff;font-size:28px;
    display:flex;align-items:center;justify-content:center;margin:0 auto 18px;box-shadow:0 16px 30px -10px rgba(31,108,255,.6);}
.why-card h4{font-size:19px;font-weight:800;color:var(--pg-ink);margin-bottom:10px;}
.why-card p{font-size:14px;line-height:1.75;color:var(--pg-sub);}

/* ===== 模态框（显隐类名 .show 沿用原 JS） ===== */
.modal-overlay{display:none;position:fixed;inset:0;background:rgba(12,22,48,.4);z-index:1000;
    justify-content:center;align-items:center;backdrop-filter:blur(8px);}
.modal-overlay.show{display:flex;}
.modal-box{background:#fff;border-radius:22px;padding:32px 32px 34px;width:480px;max-width:92vw;
    max-height:90vh;overflow-y:auto;box-shadow:0 48px 100px -24px rgba(22,44,92,.45);animation:modalIn .3s ease;}
@keyframes modalIn{from{opacity:0;transform:scale(.95) translateY(12px);}to{opacity:1;transform:none;}}
.modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px;}
.modal-header h3{font-size:20px;color:var(--pg-ink);font-weight:800;}
.modal-close{background:#f2f5fb;border:none;width:32px;height:32px;border-radius:50%;font-size:16px;color:#8a93a8;cursor:pointer;line-height:1;transition:.2s;}
.modal-close:hover{color:var(--pg-ink);background:#e7ecf6;}
.modal-tabs{display:flex;gap:6px;background:#eef1f7;border-radius:14px;padding:5px;margin-bottom:22px;}
.modal-tabs .tab-btn{flex:1;padding:10px 0;border:none;background:none;border-radius:10px;font-size:14px;color:#667085;cursor:pointer;font-weight:600;transition:.25s;}
.modal-tabs .tab-btn.active{background:#fff;color:var(--pg-primary);box-shadow:0 8px 18px -6px rgba(31,108,255,.4);}
.modal-step{display:none;}.modal-step.active{display:block;animation:fadeUp .3s ease;}

/* ===== Toast（显隐类名 .show 沿用原 JS） ===== */
.toast{position:fixed;top:24px;left:50%;transform:translateX(-50%) translateY(-120px);
    padding:13px 28px;border-radius:14px;color:#fff;font-size:14px;font-weight:500;z-index:9999;
    transition:transform .4s cubic-bezier(.4,0,.2,1);box-shadow:0 18px 40px -10px rgba(22,44,92,.4);}
.toast.show{transform:translateX(-50%) translateY(0);}
.toast.success{background:linear-gradient(135deg,#1fa37a,#33cf80);}
.toast.error{background:linear-gradient(135deg,#ff5f6d,#ff8a5f);}
.toast.info{background:var(--pg-grad);}

/* ===== 页脚（飞牛式多列） ===== */
.pg-footer{position:relative;z-index:2;background:#0b1330;color:#c3cbe0;margin-top:40px;}
.footer-inner{max-width:1100px;margin:0 auto;padding:54px 28px 36px;display:grid;
    grid-template-columns:2fr 1fr 1fr 1fr;gap:34px;}
.footer-logo{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;color:#fff;margin-bottom:14px;}
.footer-logo .logo-icon{width:32px;height:32px;border-radius:9px;background:var(--pg-grad);color:#fff;font-size:16px;display:flex;align-items:center;justify-content:center;}
.footer-brand p{font-size:13px;line-height:1.8;color:#8b95b4;max-width:300px;}
.footer-col h5{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-col a{display:block;font-size:13px;color:#9aa4c4;margin-bottom:11px;}
.footer-col a:hover{color:#fff;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);text-align:center;padding:20px;font-size:12px;color:#7c86a6;}

/* ===== 响应式 ===== */
@media (max-width:960px){
    .topbar-nav{display:none;}
    .feature-grid{grid-template-columns:repeat(2,1fr);}
    .why-grid{grid-template-columns:1fr;}
    .footer-inner{grid-template-columns:1fr 1fr;}
    .hero{padding:50px 20px 30px;}
}
@media (max-width:560px){
    .topbar-inner{padding:0 16px;height:62px;}
    .topbar-cta a:first-child{display:none;}
    .top-notice{font-size:12px;}
    .feature-grid{grid-template-columns:1fr;}
    .footer-inner{grid-template-columns:1fr;gap:22px;padding:38px 22px 26px;}
    .container{padding:40px 18px;}
    .login-card{padding:28px 20px;}
    .feat-info{padding:22px 20px 24px;}
    .feat-info h3{font-size:20px;}
    .feat-window img{width:100%;height:auto;}
}

/* ===== 图片点击放大灯箱 ===== */
.feat-window img.fp-zoom{cursor:zoom-in;transition:filter .25s;}
.feat-window img.fp-zoom:hover{filter:brightness(1.04) saturate(1.05);}
.fp-lightbox{display:none;position:fixed;inset:0;z-index:2000;background:rgba(8,15,35,.82);
    backdrop-filter:blur(6px);justify-content:center;align-items:center;padding:40px;
    cursor:zoom-out;animation:fpLbIn .25s ease;}
.fp-lightbox.show{display:flex;}
@keyframes fpLbIn{from{opacity:0;}to{opacity:1;}}
.fp-lightbox-fig{margin:0;max-width:min(1200px,92vw);max-height:88vh;display:flex;flex-direction:column;
    align-items:center;cursor:default;animation:fpLbZoom .3s cubic-bezier(.2,.8,.2,1);}
@keyframes fpLbZoom{from{opacity:0;transform:scale(.92);}to{opacity:1;transform:none;}}
.fp-lightbox-fig img{max-width:100%;max-height:78vh;width:auto;height:auto;border-radius:16px;
    box-shadow:0 50px 120px -30px rgba(0,0,0,.7);display:block;background:#0b1730;}
.fp-lightbox-fig figcaption{margin-top:16px;font-size:15px;font-weight:600;color:#e6ecff;
    letter-spacing:.3px;text-align:center;}
.fp-lightbox-close{position:absolute;top:22px;right:26px;width:44px;height:44px;border:none;
    border-radius:50%;background:rgba(255,255,255,.14);color:#fff;font-size:18px;cursor:pointer;
    line-height:1;transition:.2s;backdrop-filter:blur(4px);}
.fp-lightbox-close:hover{background:var(--pg-primary);transform:rotate(90deg);}
@media (max-width:560px){
    .fp-lightbox{padding:18px;}
    .fp-lightbox-fig img{max-height:72vh;border-radius:12px;}
    .fp-lightbox-fig figcaption{font-size:13px;}
}