:root{
  --primary:#667eea; --primary2:#764ba2;
  --gold:#ffb300; --gold2:#ffd700;
  --text:#1f2933; --muted:#6c757d;
  --green:#1aa179; --red:#e03131;
  --bg:#ffffff; --bg-soft:#f5f7fb;
  --border:#e6e9f2; --radius:14px;
  --shadow:0 6px 20px rgba(60,72,120,.10);
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;
  color:var(--text);line-height:1.65;min-height:100vh;
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(118,75,162,.06), transparent 60%),
    radial-gradient(900px 500px at -10% 5%, rgba(102,126,234,.07), transparent 55%),
    linear-gradient(180deg,#f7f8fc,#f3f5fb 40%,#eef1f8);
  background-attachment:fixed;
}
a{color:var(--primary);text-decoration:none;transition:.2s;}
a:hover{color:var(--primary2);}

.nav{position:sticky;top:0;z-index:50;display:flex;justify-content:space-between;align-items:center;
  padding:14px 30px;background:rgba(255,255,255,.85);backdrop-filter:blur(14px);border-bottom:1px solid var(--border);
  box-shadow:0 2px 14px rgba(60,72,120,.06);}
.nav .brand{display:flex;flex-direction:column;line-height:1.12;}
.nav .brand .brand-main{font-size:19px;font-weight:800;letter-spacing:.5px;
  background:linear-gradient(135deg,#ffb300,#ffd700);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;}
.nav .brand .brand-sub{font-size:10px;color:#8a93a6;font-weight:600;letter-spacing:1.5px;}
.nav .links{display:flex;align-items:center;flex-wrap:wrap;gap:4px;}
.nav .links a{color:#495057;font-size:14px;font-weight:500;padding:7px 14px;border-radius:8px;}
.nav .links a:hover{color:var(--primary2);background:rgba(102,126,234,.10);}
/* 汉堡菜单(移动端) — 默认(PC)隐藏 */
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:42px;height:42px;
  border-radius:10px;cursor:pointer;border:1px solid var(--border);background:#fff;}
.nav-toggle span{display:block;width:20px;height:2px;margin:0 auto;background:#495057;border-radius:2px;transition:.25s;}

.container{max-width:1160px;margin:34px auto;padding:0 24px;}

/* 全宽分区（落地页: 背景全幅、内容居中） */
.section{width:100%;padding:60px 0;position:relative;}
.section > .wrap{max-width:1160px;margin:0 auto;padding:0 24px;}
.section.alt{background:#eef1f8;}
.section.hero-sec{background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);color:#fff;text-align:center;padding:88px 0;overflow:hidden;}
.section.hero-sec::after{content:"";position:absolute;inset:0;background:radial-gradient(800px 320px at 50% -30%,rgba(255,255,255,.18),transparent 70%);pointer-events:none;}
.section.hero-sec h1{font-size:40px;font-weight:900;color:#fff;margin-bottom:16px;letter-spacing:.5px;position:relative;z-index:1;}
.section.hero-sec p{color:rgba(255,255,255,.92);font-size:16px;max-width:720px;margin:0 auto 28px;position:relative;z-index:1;}
.section.hero-sec .muted{color:rgba(255,255,255,.72)!important;}
.section.hero-sec .cta-row{position:relative;z-index:1;}
.section.hero-sec .btn.ghost{background:rgba(255,255,255,.10);color:#fff;border:1px solid rgba(255,255,255,.55);}
.section.hero-sec .btn.ghost:hover{background:rgba(255,255,255,.20);color:#fff;border-color:#fff;}
.section.cta-sec{background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);color:#fff;}
.section.cta-sec .cta-inner{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap;}
.section.cta-sec h2{color:#fff;font-size:24px;font-weight:800;margin:0 0 8px;}
.section.cta-sec p{color:rgba(255,255,255,.9);margin:0;max-width:620px;line-height:1.7;}
.section.cta-sec .pill{display:inline-block;font-size:12px;font-weight:700;color:#fff;background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.35);padding:4px 12px;border-radius:999px;margin-bottom:10px;}
.section.cta-sec .btn{background:#fff;color:var(--primary2);box-shadow:0 6px 18px rgba(0,0,0,.12);}
.section.cta-sec .btn:hover{background:#f3f4ff;color:var(--primary2);}
.section .sec-head{margin-bottom:30px;}
.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:26px;margin-bottom:22px;box-shadow:var(--shadow);transition:border-color .25s;min-width:0;}
.card:hover{border-color:#d4daea;}
.card h2{color:#1f2933;margin-bottom:16px;font-size:19px;font-weight:700;display:flex;align-items:center;gap:10px;}
.card h2::before{content:"";width:4px;height:18px;border-radius:3px;background:linear-gradient(180deg,#667eea,#764ba2);}

.auth-box{max-width:400px;margin:70px auto;}
.auth-box h2{justify-content:center;}
.auth-box h2::before{display:none;}

label{display:block;margin:16px 0 7px;font-size:13px;color:var(--muted);font-weight:500;}
input[type=text],input[type=password],select,textarea{width:100%;padding:12px 14px;background:#fff;border:1px solid #d6dbe7;
  border-radius:10px;color:#1f2933;font-size:15px;transition:.2s;}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(102,126,234,.15);}
input::placeholder,textarea::placeholder{color:#9aa3b2;}

.btn{display:inline-block;cursor:pointer;text-align:center;padding:12px 20px;border:none;border-radius:10px;
  font-size:15px;font-weight:700;letter-spacing:.3px;color:#fff;
  background:linear-gradient(135deg,#667eea,#764ba2);box-shadow:0 6px 18px rgba(102,126,234,.30);transition:.2s;}
.btn:hover{transform:translateY(-1px);box-shadow:0 10px 24px rgba(118,75,162,.42);color:#fff;}
.btn.block{width:100%;margin-top:22px;}
.btn.ghost{background:#fff;color:var(--primary2);border:1px solid #cdd4ea;box-shadow:none;}
.btn.ghost:hover{background:rgba(102,126,234,.08);color:var(--primary2);border-color:var(--primary);}

.msg{padding:11px 15px;border-radius:10px;margin-bottom:16px;font-size:14px;}
.msg.err{background:rgba(224,49,49,.08);color:#c92a2a;border:1px solid rgba(224,49,49,.30);}
.msg.ok{background:rgba(26,161,121,.10);color:#108a64;border:1px solid rgba(26,161,121,.30);}
.tip{text-align:center;margin-top:20px;font-size:14px;color:var(--muted);}

table{width:100%;border-collapse:separate;border-spacing:0;}
th,td{padding:13px 14px;text-align:left;font-size:14px;border-bottom:1px solid #edf0f6;}
th{color:var(--muted);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.6px;}
tbody tr{transition:.15s;}
tr:hover td{background:rgba(102,126,234,.04);}

.badge{display:inline-block;padding:3px 11px;border-radius:999px;font-size:12px;font-weight:600;}
.badge.active{background:rgba(26,161,121,.14);color:#108a64;}
.badge.disabled{background:rgba(224,49,49,.12);color:#c92a2a;}
.badge.trial{background:rgba(255,179,0,.16);color:#b07c00;}

.rank{display:inline-flex;align-items:center;justify-content:center;min-width:30px;height:30px;border-radius:8px;
  font-weight:800;font-size:14px;background:#f1f3f9;border:1px solid #e0e5f0;color:#495057;}
.rank-1{background:linear-gradient(135deg,#ffb300,#ffd700);color:#5a4500;border:none;}
.rank-2{background:linear-gradient(135deg,#aeb7c7,#dde4ef);color:#2c3340;border:none;}
.rank-3{background:linear-gradient(135deg,#cd7f32,#e8a85c);color:#3a2410;border:none;}

.muted{color:var(--muted);font-size:14px;}

/* 英雄区: 紫色渐变 */
.hero{text-align:center;padding:72px 30px;position:relative;overflow:hidden;border:none;
  background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);color:#fff;}
.hero::after{content:"";position:absolute;inset:0;background:radial-gradient(700px 280px at 50% -40%,rgba(255,255,255,.18),transparent 70%);pointer-events:none;}
.hero h1{font-size:38px;font-weight:900;margin-bottom:16px;letter-spacing:.5px;color:#fff;position:relative;z-index:1;}
.hero p{color:rgba(255,255,255,.92);font-size:16px;max-width:640px;margin:0 auto 28px;position:relative;z-index:1;}
.hero .muted{color:rgba(255,255,255,.72) !important;}
.hero .cta-row{position:relative;z-index:1;}
.hero .btn.ghost{background:rgba(255,255,255,.10);color:#fff;border:1px solid rgba(255,255,255,.55);}
.hero .btn.ghost:hover{background:rgba(255,255,255,.20);color:#fff;border-color:#fff;}

.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.feature{background:#fff;border:1px solid var(--border);border-radius:14px;padding:24px;transition:.25s;box-shadow:0 4px 14px rgba(60,72,120,.06);}
.feature:hover{transform:translateY(-5px);border-color:#d4daea;box-shadow:0 12px 28px rgba(60,72,120,.14);}
.feature .ic{font-size:26px;margin-bottom:12px;}
.feature h3{color:#1f2933;font-size:16px;margin-bottom:8px;}
.feature p{color:var(--muted);font-size:13.5px;line-height:1.7;}
.cta-row{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;}

.strategy-card h2{margin-bottom:4px;}
.strategy-head{display:flex;justify-content:space-between;gap:16px;align-items:flex-start;margin-bottom:18px;}
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:16px 0;}
.metric-grid div{background:var(--bg-soft);border:1px solid var(--border);border-radius:12px;padding:14px 16px;}
.metric-grid span{display:block;color:var(--muted);font-size:12px;margin-bottom:6px;}
.metric-grid b{color:#1f2933;font-size:16px;}

.detail-box{margin-top:16px;border-radius:10px;}
.detail-box summary{color:var(--primary2);cursor:pointer;font-weight:700;padding:8px 0;}
.detail-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin:14px 0;}
.detail-grid section{background:var(--bg-soft);border-radius:12px;padding:16px;border:1px solid var(--border);}
.detail-grid .detail-wide{grid-column:1 / -1;}
.detail-grid h3{color:var(--primary2);font-size:15px;margin-bottom:10px;}
.detail-grid p{color:#3a4351;font-size:13px;margin:6px 0;}
.prompt-summary{color:#5a6372 !important;background:#f5f7fb;border-left:3px solid var(--primary);padding:10px;border-radius:6px;white-space:pre-wrap;max-height:160px;overflow:auto;font-family:"Microsoft YaHei",sans-serif;font-size:13px;}
.status-line{margin-top:12px;color:var(--muted);font-size:13px;}
.chart-frame{width:100%;max-width:100%;overflow:hidden;border-radius:12px;border:1px solid var(--border);background:#0b0f18;}
.chart-img{display:block;width:100%;max-width:100%;height:auto;object-fit:contain;border:0;box-shadow:var(--shadow);transition:.2s;}
.chart-img:hover{border-color:#d4daea;}
.prompt-full{color:#3a4351;background:#f5f7fb;border:1px solid var(--border);border-left:3px solid var(--primary);padding:16px;border-radius:8px;white-space:pre-wrap;word-break:break-word;font-family:"Microsoft YaHei",sans-serif;font-size:13.5px;line-height:1.8;}

::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:#eef1f8;}
::-webkit-scrollbar-thumb{background:#c3cbdd;border-radius:6px;}
::-webkit-scrollbar-thumb:hover{background:#a7b1ca;}

.up{color:var(--green) !important;}
.down{color:var(--red) !important;}

.sort-bar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:18px;}
.sort-label{color:var(--muted);font-size:13px;font-weight:600;}
.sort-btn{display:inline-block;padding:7px 16px;border-radius:999px;font-size:13px;font-weight:600;
  color:#4a5568;background:#fff;border:1px solid var(--border);transition:.18s;box-shadow:0 2px 8px rgba(60,72,120,.05);}
.sort-btn:hover{border-color:var(--primary);color:var(--primary2);transform:translateY(-1px);}
.sort-btn.active{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border-color:transparent;
  box-shadow:0 6px 16px rgba(102,126,234,.35);}
.sort-btn.active:hover{color:#fff;}

.trader-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.trader-card{display:block;background:#fff;border:1px solid var(--border);
  border-radius:16px;padding:20px;transition:.22s;color:var(--text);box-shadow:0 4px 14px rgba(60,72,120,.06);}
.trader-card:hover{transform:translateY(-4px);border-color:var(--primary);box-shadow:0 14px 30px rgba(60,72,120,.16);color:var(--text);}
.tc-head{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.tc-id b{display:block;font-size:15px;color:#1f2933;}
.tc-id small{color:var(--muted);font-size:12px;}
.tc-profit{font-size:30px;font-weight:900;letter-spacing:.5px;color:#1f2933;}
.tc-sub{color:var(--muted);font-size:12px;margin-bottom:14px;}
.tc-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;padding-top:14px;border-top:1px solid #edf0f6;}
.tc-grid span{display:block;color:var(--muted);font-size:11px;margin-bottom:3px;}
.tc-grid b{color:#1f2933;font-size:13px;}
.tc-foot{margin-top:14px;color:var(--primary2);font-size:12px;}

.kpi-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:14px;margin-bottom:22px;}
.kpi{background:#fff;border:1px solid var(--border);border-radius:14px;padding:16px 18px;box-shadow:0 4px 14px rgba(60,72,120,.06);}
.kpi span{display:block;color:var(--muted);font-size:12px;margin-bottom:8px;}
.kpi b{font-size:22px;font-weight:800;color:#1f2933;}

.curve-wrap{width:100%;height:300px;background:linear-gradient(180deg,#fff,#fafbfe);border:1px solid var(--border);border-radius:12px;overflow:hidden;}
.curve-svg{display:block;width:100%;height:100%;}
.curve-meta{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;
  margin-top:10px;color:var(--muted);font-size:12.5px;}
.curve-meta b{font-weight:700;}
.chart-empty{display:flex;align-items:center;justify-content:center;height:100%;color:var(--muted);font-size:14px;text-align:center;padding:0 20px;}
.card h2 small{font-size:12px;font-weight:500;}

.detail-layout{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(320px,.9fr);gap:20px;align-items:start;margin-bottom:22px;max-width:100%;overflow:hidden;}
.detail-left{display:flex;flex-direction:column;gap:20px;min-width:0;max-width:100%;overflow:hidden;}
.detail-right{min-width:0;max-width:100%;}
.info-stack{display:flex;flex-direction:column;gap:16px;}
.info-stack section{background:#fff;border:1px solid var(--border);border-radius:12px;padding:18px;box-shadow:0 4px 14px rgba(60,72,120,.06);}
.info-stack h3{color:var(--primary2);font-size:15px;margin-bottom:10px;}
.info-stack p{color:#3a4351;font-size:13.5px;margin:6px 0;}

/* ===== 管理后台 ===== */
.container.admin{max-width:1280px;}
.admin-bar{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:14px 20px;margin-bottom:22px;box-shadow:var(--shadow);}
.admin-title{font-size:18px;font-weight:800;color:#1f2933;display:flex;align-items:center;gap:10px;white-space:nowrap;}
.admin-title::before{content:"";width:4px;height:18px;border-radius:3px;background:linear-gradient(180deg,#667eea,#764ba2);}
.admin-tabs{display:flex;flex-wrap:wrap;gap:6px;}
.admin-tabs a{font-size:13.5px;font-weight:600;color:#495057;padding:8px 14px;border-radius:9px;border:1px solid transparent;white-space:nowrap;transition:.18s;}
.admin-tabs a:hover{background:rgba(102,126,234,.08);color:var(--primary2);}
.admin-tabs a.on{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;box-shadow:0 4px 14px rgba(102,126,234,.30);}
.admin-tabs a.ext{color:#8a93a6;}
.admin-tabs a.ext:hover{color:var(--primary2);background:rgba(102,126,234,.08);}
.container.admin .card{overflow-x:auto;}
.container.admin table{min-width:720px;}
.quick-links{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:12px;}
.quick-links a{display:flex;align-items:center;gap:12px;padding:16px 18px;border-radius:12px;
  background:var(--bg-soft);border:1px solid var(--border);color:#3a4351;font-weight:600;transition:.2s;}
.quick-links a:hover{border-color:var(--primary);transform:translateY(-2px);color:var(--primary2);}
.quick-links .ic{font-size:22px;line-height:1;}
.quick-links small{display:block;color:var(--muted);font-size:11.5px;font-weight:500;margin-top:2px;}

/* ===== 联系作者 ===== */
.contact-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:18px;margin-top:8px;}
.contact-item{background:#fff;border:1px solid var(--border);border-radius:14px;
  padding:26px 20px;text-align:center;transition:.25s;box-shadow:0 4px 14px rgba(60,72,120,.06);}
.contact-item:hover{border-color:var(--primary);transform:translateY(-3px);box-shadow:0 12px 28px rgba(60,72,120,.14);}
.contact-item .ic{font-size:0;margin-bottom:10px;line-height:1;display:flex;justify-content:center;align-items:center;min-height:48px;}
.contact-item .ic img{width:48px;height:48px;display:block;object-fit:contain;}
.contact-item h3{color:#1f2933;font-size:15px;margin-bottom:10px;}
.contact-item .big{color:var(--primary2);font-size:18px;font-weight:800;letter-spacing:.5px;margin-bottom:4px;word-break:break-all;}
.contact-item small{display:block;color:var(--muted);font-size:12px;margin-bottom:14px;}
.contact-item .btn{padding:8px 16px;font-size:13px;}

/* ===== 首页（落地页布局）===== */
.brand-badge{display:inline-flex;align-items:center;flex-wrap:wrap;justify-content:center;gap:12px;margin-bottom:18px;position:relative;z-index:1;}
.brand-badge .bb-name{font-size:22px;font-weight:900;letter-spacing:.5px;
  background:linear-gradient(135deg,#ffd700,#ffb300);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;}
.brand-badge .bb-en{font-size:13px;font-weight:700;letter-spacing:2px;color:rgba(255,255,255,.78);text-transform:uppercase;}
.brand-badge .bb-slogan{font-size:12.5px;font-weight:600;color:#fff;padding:5px 14px;border:1px solid rgba(255,255,255,.4);border-radius:999px;background:rgba(255,255,255,.10);}

.sec-head{text-align:center;max-width:700px;margin:0 auto 26px;}
.sec-head h2{justify-content:center;font-size:24px;color:#1f2933;font-weight:800;margin-bottom:0;}
.sec-head h2::before{display:none;}
.sec-head p{color:var(--muted);font-size:14px;margin-top:10px;}

.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.stat{background:#fff;border:1px solid var(--border);border-radius:14px;padding:26px 16px;text-align:center;transition:.25s;box-shadow:0 4px 14px rgba(60,72,120,.06);}
.stat:hover{transform:translateY(-3px);border-color:#d4daea;box-shadow:0 12px 28px rgba(60,72,120,.14);}
.stat .ic{font-size:30px;margin-bottom:10px;}
.stat b{display:block;font-size:30px;font-weight:900;line-height:1.1;
  background:linear-gradient(90deg,#667eea,#764ba2);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;}
.stat span{display:block;color:var(--muted);font-size:13px;margin-top:8px;}

.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.step{text-align:center;padding:8px;}
.step .num{display:inline-flex;align-items:center;justify-content:center;width:54px;height:54px;border-radius:50%;
  font-size:22px;font-weight:900;color:#fff;background:linear-gradient(135deg,#667eea,#764ba2);
  box-shadow:0 6px 18px rgba(102,126,234,.32);margin-bottom:14px;}
.step h3{color:#1f2933;font-size:16px;margin-bottom:8px;}
.step p{color:var(--muted);font-size:13.5px;line-height:1.75;}
.step code{background:#eef1f8;border:1px solid #dde3f0;border-radius:5px;padding:1px 6px;color:#764ba2;font-size:12.5px;}

.faq-item{background:#fff;border:1px solid var(--border);border-radius:12px;margin-bottom:12px;overflow:hidden;transition:border-color .2s,box-shadow .2s;}
.faq-item[open]{border-color:#c9d2ee;box-shadow:0 6px 18px rgba(60,72,120,.08);}
.faq-item summary{cursor:pointer;list-style:none;padding:16px 20px;font-weight:700;color:#1f2933;font-size:15px;
  display:flex;justify-content:space-between;align-items:center;gap:12px;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"+";color:var(--primary);font-size:24px;font-weight:300;line-height:1;transition:.2s;flex:0 0 auto;}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-item summary:hover{color:var(--primary2);}
.faq-item .ans{padding:0 20px 18px;color:#3a4351;font-size:14px;line-height:1.9;}
.faq-item .ans strong{color:#1f2933;}

.cta-banner{background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);border:none;border-radius:var(--radius);
  padding:34px;display:flex;justify-content:space-between;align-items:center;gap:22px;flex-wrap:wrap;box-shadow:0 10px 30px rgba(102,126,234,.28);}
.cta-banner .cb-txt{flex:1;min-width:260px;}
.cta-banner h2{margin:0 0 8px;color:#fff;font-size:22px;font-weight:800;}
.cta-banner h2::before{display:none;}
.cta-banner p{color:rgba(255,255,255,.9);font-size:14px;margin:0;max-width:600px;line-height:1.7;}
.cta-banner .pill{display:inline-block;font-size:12px;font-weight:700;color:#fff;background:rgba(255,255,255,.18);
  border:1px solid rgba(255,255,255,.35);padding:4px 12px;border-radius:999px;margin-bottom:10px;}
.cta-banner .btn{background:#fff;color:var(--primary2);box-shadow:0 6px 18px rgba(0,0,0,.12);}
.cta-banner .btn:hover{background:#f3f4ff;color:var(--primary2);}

@media (max-width:900px){
  .metric-grid,.detail-grid,.feature-grid,.trader-grid,.kpi-row,.contact-grid{grid-template-columns:1fr;}
  .kpi-row{grid-template-columns:repeat(2,1fr);}
  .stats{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:1fr;}
  .detail-layout{grid-template-columns:1fr;}
  .strategy-head{flex-direction:column;}
  .hero h1{font-size:28px;}
  .nav{padding:12px 16px;}
  .container{padding:0 14px;}
  .admin-bar{flex-direction:column;align-items:flex-start;}
  .cta-banner{flex-direction:column;align-items:flex-start;}
  .section{padding:42px 0;}
  .section > .wrap{padding:0 16px;}
  .section.hero-sec{padding:58px 0;}
  .section.hero-sec h1{font-size:28px;}
  .section.cta-sec .cta-inner{flex-direction:column;align-items:flex-start;}
}

/* ===== 移动端导航(汉堡菜单) ===== */
@media (max-width:820px){
  .nav{flex-wrap:nowrap;}
  .nav-toggle{display:flex;}
  /* 链接下拉化(初始收起) */
  .nav .links{position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;
    background:rgba(255,255,255,.98);backdrop-filter:blur(14px);border-bottom:1px solid var(--border);
    box-shadow:0 10px 24px rgba(60,72,120,.12);
    max-height:0;overflow:hidden;opacity:0;visibility:hidden;transition:max-height .28s ease,opacity .2s ease;}
  .nav .links a{padding:14px 22px;font-size:15px;border-radius:0;border-bottom:1px solid #f0f2f8;}
  .nav .links a:last-child{border-bottom:none;}
  .nav .links a:hover{background:rgba(102,126,234,.08);}
  /* 勾选展开 */
  .nav-toggle-cb:checked ~ .links{max-height:80vh;overflow-y:auto;opacity:1;visibility:visible;}
  /* 汉堡 → × 动画 */
  .nav-toggle-cb:checked ~ .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg);}
  .nav-toggle-cb:checked ~ .nav-toggle span:nth-child(2){opacity:0;}
  .nav-toggle-cb:checked ~ .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
}

/* ===== 小屏手机微调 ===== */
@media (max-width:560px){
  .hero{padding:54px 18px;}
  .hero h1{font-size:24px;}
  .section.hero-sec h1{font-size:24px;}
  .brand-badge{gap:8px;}
  .brand-badge .bb-name{font-size:18px;}
  .stats{grid-template-columns:repeat(2,1fr);gap:12px;}
  .stat{padding:18px 10px;}
  .stat b{font-size:24px;}
  .kpi-row{grid-template-columns:1fr;}
  .card{padding:18px;}
  .cta-banner{padding:24px 18px;}
  .nav .brand .brand-main{font-size:17px;}
}