/* ===== Bedrock - 磐石 全站样式 (白 / 蓝 · 玻璃拟态) ===== */
:root{
  --bg:#eef4ff;
  --bg-2:#f7faff;
  --text:#0b1b34;
  --text-2:#35507a;
  --muted:#6b7d99;
  --muted-2:#7b8ca6;

  --blue:#2563eb;
  --blue-2:#3b82f6;
  --blue-3:#60a5fa;
  --cyan:#22d3ee;
  --violet:#7c3aed;

  --glass:rgba(255,255,255,.72);
  --glass-2:rgba(255,255,255,.5);
  --glass-3:rgba(255,255,255,.34);
  --border:rgba(37,99,235,.14);
  --border-2:rgba(37,99,235,.24);
  --border-soft:rgba(37,99,235,.09);
  --surface:rgba(255,255,255,.72);
  --surface-2:rgba(255,255,255,.55);
  --bg-soft:rgba(255,255,255,.45);
  --hair:rgba(255,255,255,.85);

  --grad:linear-gradient(135deg,#2563eb 0%,#3b82f6 46%,#22d3ee 100%);
  --grad-soft:linear-gradient(135deg,rgba(37,99,235,.12),rgba(34,211,238,.12));
  --shadow-sm:0 8px 22px -14px rgba(30,64,175,.45);
  --shadow:0 24px 48px -30px rgba(30,64,175,.55);
  --shadow-lg:0 40px 80px -40px rgba(30,64,175,.45);

  --ok:#0ea371;
  --warn:#d97706;
  --err:#dc2626;

  --radius:18px;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Roboto,Helvetica,Arial,sans-serif;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:
    radial-gradient(900px 620px at 12% -6%,rgba(37,99,235,.20),transparent 62%),
    radial-gradient(760px 520px at 88% 4%,rgba(34,211,238,.20),transparent 64%),
    radial-gradient(900px 700px at 60% 108%,rgba(124,58,237,.13),transparent 66%),
    linear-gradient(180deg,#f2f7ff 0%,#eef3ff 42%,#f7faff 100%);
  background-attachment:fixed;
  color:var(--text);font-family:var(--sans);
  font-size:14px;line-height:1.6;-webkit-font-smoothing:antialiased;
  min-height:100vh;
}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
::selection{background:rgba(37,99,235,.18)}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:rgba(37,99,235,.22);border-radius:8px;border:3px solid transparent;background-clip:content-box}
::-webkit-scrollbar-thumb:hover{background:rgba(37,99,235,.4);background-clip:content-box}

/* ---- 通用 ---- */
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.muted{color:var(--muted)}
.dim{color:var(--muted)}
.red{color:var(--blue)}
.hidden{display:none !important}
.center{text-align:center}
.row{display:flex;align-items:center;gap:10px}
.spread{display:flex;align-items:center;justify-content:space-between;gap:16px}
.grid{display:grid;gap:16px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 18px;border-radius:12px;
  border:1px solid var(--border-2);
  background:rgba(255,255,255,.7);
  backdrop-filter:blur(12px);
  color:var(--text);font-weight:600;font-size:13.5px;
  cursor:pointer;transition:.18s ease;white-space:nowrap;
  box-shadow:0 1px 0 rgba(255,255,255,.9) inset,var(--shadow-sm);
}
.btn:hover{background:#fff;border-color:rgba(37,99,235,.38);transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.btn-primary{
  background:var(--grad);border-color:transparent;color:#fff;
  box-shadow:0 14px 30px -14px rgba(37,99,235,.85),inset 0 1px 0 rgba(255,255,255,.35);
}
.btn-primary:hover{background:linear-gradient(135deg,#1d4ed8,#2f7df6,#22d3ee);box-shadow:0 18px 36px -14px rgba(37,99,235,.9)}
.btn-ghost{background:rgba(255,255,255,.42);border-color:transparent;box-shadow:none}
.btn-ghost:hover{background:rgba(255,255,255,.8);border-color:var(--border)}
.btn-sm{height:32px;padding:0 13px;font-size:12.5px;border-radius:10px}
.btn-block{width:100%}
.btn-danger{background:rgba(220,38,38,.08);border-color:rgba(220,38,38,.28);color:#b91c1c}
.btn-danger:hover{background:rgba(220,38,38,.14);border-color:rgba(220,38,38,.45)}

.card{
  position:relative;
  background:linear-gradient(158deg,rgba(255,255,255,.92),rgba(255,255,255,.62));
  border:1px solid var(--hair);
  border-radius:var(--radius);
  backdrop-filter:blur(18px) saturate(1.5);
  -webkit-backdrop-filter:blur(18px) saturate(1.5);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.95);
}
.card-pad{padding:22px}

.field{display:flex;flex-direction:column;gap:7px;margin-bottom:16px}
.field label{font-size:12.5px;color:var(--text-2);font-weight:650;letter-spacing:.2px}
.input{
  height:42px;padding:0 13px;border-radius:12px;
  background:rgba(255,255,255,.78);
  border:1px solid var(--border);outline:none;transition:.16s;width:100%;
  box-shadow:inset 0 1px 2px rgba(30,64,175,.05);
}
.input:hover{border-color:var(--border-2)}
.input:focus{border-color:rgba(37,99,235,.6);box-shadow:0 0 0 4px rgba(37,99,235,.13);background:#fff}
.input::placeholder{color:#9aabc4}
.input:disabled{opacity:.6;background:rgba(255,255,255,.45)}
textarea.input{height:auto;padding:10px 13px;resize:vertical;line-height:1.6}
select.input{appearance:none;background-image:linear-gradient(45deg,transparent 50%,#64748b 50%),linear-gradient(135deg,#64748b 50%,transparent 50%);background-position:calc(100% - 18px) 19px,calc(100% - 13px) 19px;background-size:5px 5px,5px 5px;background-repeat:no-repeat;padding-right:36px}
input[type="date"].input{color-scheme:light}
.check{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;color:var(--text-2);cursor:pointer;user-select:none;margin-top:2px}
.check input[type="checkbox"]{width:15px;height:15px;margin:0;accent-color:var(--blue);cursor:pointer}
.check.off{opacity:.45}

.tag{
  display:inline-flex;align-items:center;gap:5px;height:22px;padding:0 9px;
  border-radius:8px;font-size:11.5px;font-weight:650;
  border:1px solid var(--border);background:rgba(255,255,255,.7);color:var(--text-2);
}
.tag-ok{color:#047857;border-color:rgba(14,163,113,.28);background:rgba(16,185,129,.1)}
.tag-warn{color:#b45309;border-color:rgba(217,119,6,.28);background:rgba(245,158,11,.12)}
.tag-err{color:#b91c1c;border-color:rgba(220,38,38,.28);background:rgba(239,68,68,.1)}
.tag-run{color:#1d4ed8;border-color:rgba(37,99,235,.3);background:rgba(59,130,246,.12)}

.toast-host{position:fixed;top:20px;right:20px;z-index:9999;display:flex;flex-direction:column;gap:10px}
.toast{
  min-width:240px;max-width:380px;padding:12px 16px;border-radius:14px;
  background:rgba(255,255,255,.92);border:1px solid var(--hair);color:var(--text);
  font-size:13px;backdrop-filter:blur(16px);
  box-shadow:0 20px 44px -22px rgba(30,64,175,.5);animation:toastIn .22s ease;
}
.toast.err{border-color:rgba(220,38,38,.32);background:rgba(254,242,242,.96);color:#991b1b}
.toast.ok{border-color:rgba(14,163,113,.3);background:rgba(236,253,245,.96);color:#065f46}
@keyframes toastIn{from{opacity:0;transform:translateX(16px)}to{opacity:1;transform:none}}

.spinner{
  width:15px;height:15px;border:2px solid rgba(37,99,235,.22);
  border-top-color:var(--blue);border-radius:50%;animation:spin .7s linear infinite;
}
.btn-primary .spinner{border-color:rgba(255,255,255,.4);border-top-color:#fff}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---- 顶栏 ---- */
.nav{
  position:sticky;top:0;z-index:60;height:64px;
  background:rgba(255,255,255,.62);
  backdrop-filter:blur(20px) saturate(1.6);
  -webkit-backdrop-filter:blur(20px) saturate(1.6);
  border-bottom:1px solid rgba(255,255,255,.8);
  box-shadow:0 8px 30px -24px rgba(30,64,175,.6);
}
.nav-in{height:100%;display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.4px}
.logo-mark{
  width:28px;height:28px;border-radius:9px;position:relative;flex:none;
  background:var(--grad);
  box-shadow:0 10px 22px -10px rgba(37,99,235,.9),inset 0 1px 0 rgba(255,255,255,.5);
}
.logo-mark::after{
  content:"";position:absolute;inset:7px;border-radius:2px;
  border:1.7px solid rgba(255,255,255,.95);border-bottom-color:transparent;border-right-color:transparent;
  transform:rotate(45deg);
}
.logo b{color:var(--text);letter-spacing:.6px}
.logo span{color:var(--muted);font-weight:600;font-size:12.5px;letter-spacing:.6px}
.nav-links{display:flex;align-items:center;gap:26px;font-size:13.5px;color:var(--text-2);font-weight:600}
.nav-links a{position:relative;padding:4px 0}
.nav-links a:hover{color:var(--blue)}
.nav-links a::after{content:"";position:absolute;left:0;right:100%;bottom:-2px;height:2px;border-radius:2px;background:var(--grad);transition:right .22s}
.nav-links a:hover::after{right:0}

/* ---- 认证页 ---- */
.auth{
  min-height:100vh;display:grid;grid-template-columns:1.05fr 1fr;position:relative;overflow:hidden;
}
.auth::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(620px 420px at 18% 12%,rgba(37,99,235,.22),transparent 66%),
    radial-gradient(560px 420px at 78% 82%,rgba(34,211,238,.2),transparent 68%);
}
.auth-left{
  padding:52px 56px;display:flex;flex-direction:column;justify-content:space-between;
  border-right:1px solid rgba(255,255,255,.7);position:relative;z-index:1;
}
.auth-right{display:flex;align-items:center;justify-content:center;padding:40px 24px;position:relative;z-index:1}
.auth-box{width:100%;max-width:400px}
.auth-grid{
  position:absolute;inset:0;pointer-events:none;opacity:.45;
  background-image:linear-gradient(rgba(37,99,235,.10) 1px,transparent 1px),linear-gradient(90deg,rgba(37,99,235,.10) 1px,transparent 1px);
  background-size:46px 46px;
  mask-image:radial-gradient(ellipse at 30% 30%,#000 20%,transparent 74%);
}
@media(max-width:900px){
  .auth{grid-template-columns:1fr}
  .auth-left{display:none}
}

/* ---- 后台框架 ---- */
.shell{display:grid;grid-template-columns:236px 1fr;min-height:100vh}
.side{
  padding:18px 14px;display:flex;flex-direction:column;gap:22px;
  position:sticky;top:0;height:100vh;
  background:linear-gradient(180deg,rgba(255,255,255,.82),rgba(255,255,255,.58));
  backdrop-filter:blur(20px) saturate(1.5);
  -webkit-backdrop-filter:blur(20px) saturate(1.5);
  border-right:1px solid rgba(255,255,255,.85);
  box-shadow:14px 0 40px -34px rgba(30,64,175,.7);
}
.side-brand{display:flex;align-items:center;gap:10px;padding:4px 8px 14px;border-bottom:1px solid var(--border)}
.side-nav{display:flex;flex-direction:column;gap:3px;flex:1}
.side-item{
  display:flex;align-items:center;gap:10px;height:38px;padding:0 12px;border-radius:11px;
  color:var(--muted);font-size:13.5px;font-weight:650;cursor:pointer;transition:.16s;
}
.side-item:hover{background:rgba(255,255,255,.75);color:var(--text)}
.side-item.active{
  background:var(--grad-soft);color:var(--blue);
  box-shadow:inset 0 0 0 1px rgba(37,99,235,.18);
}
.side-item.active svg{color:var(--blue)}
.side-item svg{flex:none;opacity:.9}
.side-foot{border-top:1px solid var(--border);padding-top:14px;font-size:12px;color:var(--muted-2)}
.main{padding:26px 30px 60px;min-width:0}
.page-head{margin-bottom:22px}
.page-head h1{margin:0 0 6px;font-size:22px;font-weight:820;letter-spacing:-.3px}
.page-head p{margin:0;color:var(--muted);font-size:13px}

.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px;margin-bottom:22px}
.stat{
  padding:18px 20px;border-radius:16px;position:relative;overflow:hidden;
  background:linear-gradient(158deg,rgba(255,255,255,.95),rgba(255,255,255,.66));
  border:1px solid var(--hair);backdrop-filter:blur(16px);
  box-shadow:var(--shadow-sm),inset 0 1px 0 rgba(255,255,255,.95);
}
.stat::after{content:"";position:absolute;right:-30px;top:-40px;width:110px;height:110px;border-radius:50%;background:var(--grad-soft)}
.stat .k{font-size:12px;color:var(--muted);margin-bottom:8px;letter-spacing:.3px;position:relative}
.stat .v{font-size:26px;font-weight:820;font-family:var(--mono);letter-spacing:-.5px;position:relative}
.stat .v small{font-size:12px;color:var(--muted);font-weight:600;margin-left:3px}

/* ---- 表格 ---- */
.table-wrap{
  overflow:auto;border-radius:16px;background:rgba(255,255,255,.7);
  border:1px solid var(--hair);backdrop-filter:blur(16px);
  box-shadow:var(--shadow-sm),inset 0 1px 0 rgba(255,255,255,.95);
}
table{width:100%;border-collapse:collapse;font-size:13px}
thead th{
  text-align:left;padding:12px 14px;font-weight:650;font-size:12px;color:var(--muted);
  background:rgba(255,255,255,.6);border-bottom:1px solid var(--border);white-space:nowrap;letter-spacing:.3px;
}
tbody td{padding:12px 14px;border-bottom:1px solid rgba(37,99,235,.08);vertical-align:middle}
tbody tr:last-child td{border-bottom:none}
tbody tr:hover{background:rgba(37,99,235,.045)}
.td-empty{padding:44px 0;text-align:center;color:var(--muted-2)}

/* ---- 上传区 ---- */
.drop{
  border:1.6px dashed rgba(37,99,235,.3);border-radius:18px;padding:46px 24px;text-align:center;
  background:linear-gradient(180deg,rgba(255,255,255,.8),rgba(255,255,255,.45));
  transition:.2s;cursor:pointer;position:relative;overflow:hidden;
}
.drop::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:0;transition:.2s;
  background:radial-gradient(420px 200px at 50% 0%,rgba(37,99,235,.14),transparent 70%);
}
.drop:hover,.drop.over{border-color:rgba(37,99,235,.62);background:#fff;box-shadow:var(--shadow)}
.drop:hover::after,.drop.over::after{opacity:1}
.drop-ico{
  width:50px;height:50px;margin:0 auto 14px;border-radius:14px;
  background:var(--grad);color:#fff;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 16px 30px -14px rgba(37,99,235,.85),inset 0 1px 0 rgba(255,255,255,.4);
}
.drop h3{margin:0 0 6px;font-size:15.5px}
.drop p{margin:0;font-size:12.5px;color:var(--muted)}

/* ---- 进度 ---- */
.bar{height:6px;border-radius:99px;background:rgba(37,99,235,.12);overflow:hidden}
.bar > i{display:block;height:100%;width:0;border-radius:99px;background:var(--grad);transition:width .3s ease;box-shadow:0 0 16px rgba(37,99,235,.5)}

/* ---- 套餐卡 ---- */
.plan-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:18px}
.plan{
  position:relative;padding:26px;border-radius:20px;transition:.22s;
  background:linear-gradient(160deg,rgba(255,255,255,.96),rgba(255,255,255,.68));
  border:1px solid var(--hair);backdrop-filter:blur(18px);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.95);
  overflow:hidden;
}
.plan::before{
  content:"";position:absolute;inset:0 0 auto 0;height:3px;background:var(--grad);opacity:.9;
}
.plan:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.plan.hot{
  border-color:rgba(37,99,235,.34);
  box-shadow:0 0 0 1px rgba(37,99,235,.14),var(--shadow-lg);
  background:linear-gradient(160deg,#fff,rgba(238,246,255,.9));
}
.plan .badge{
  position:absolute;top:14px;right:16px;height:22px;padding:0 10px;border-radius:99px;
  background:var(--grad);color:#fff;font-size:11px;font-weight:750;display:flex;align-items:center;
  box-shadow:0 8px 18px -10px rgba(37,99,235,.9);
}
.plan h3{margin:0 0 4px;font-size:16.5px;letter-spacing:-.2px}
.plan .sub{color:var(--muted);font-size:12.5px;min-height:20px}
.plan .price{font-size:34px;font-weight:840;font-family:var(--mono);letter-spacing:-1.4px;margin:16px 0 2px}
.plan .price small{font-size:13px;color:var(--muted);font-weight:600;letter-spacing:0}
.plan ul{list-style:none;padding:0;margin:16px 0 20px;display:flex;flex-direction:column;gap:9px;font-size:13px;color:var(--text-2)}
.plan li{display:flex;gap:9px;align-items:flex-start}
.plan li::before{
  content:"";width:16px;height:16px;flex:none;margin-top:2px;border-radius:6px;
  background:var(--grad-soft);border:1px solid rgba(37,99,235,.28);
  box-shadow:inset 0 0 0 2px rgba(255,255,255,.9);
}

/* ---- 模态 ---- */
.modal-mask{
  position:fixed;inset:0;background:rgba(12,26,51,.34);backdrop-filter:blur(8px);
  display:flex;align-items:center;justify-content:center;z-index:200;padding:24px;
}
.modal{
  width:100%;max-width:520px;max-height:88vh;overflow:auto;border-radius:22px;
  background:linear-gradient(160deg,rgba(255,255,255,.98),rgba(245,250,255,.94));
  border:1px solid #fff;box-shadow:0 50px 110px -40px rgba(12,26,51,.55);
  animation:modalIn .2s ease;
}
@keyframes modalIn{from{opacity:0;transform:translateY(10px) scale(.985)}to{opacity:1;transform:none}}
.modal-head{padding:20px 24px;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center}
.modal-head h3{margin:0;font-size:16px}
.modal-body{padding:22px 24px}
.modal-foot{padding:16px 24px;border-top:1px solid var(--border);display:flex;justify-content:flex-end;gap:10px}

/* ---- 首页 ---- */
.hero{position:relative;overflow:hidden;padding:96px 0 88px}
.hero::before{
  content:"";position:absolute;inset:-20% -10% auto -10%;height:660px;pointer-events:none;
  background:radial-gradient(620px 340px at 22% 16%,rgba(37,99,235,.22),transparent 66%),
             radial-gradient(700px 380px at 80% 4%,rgba(34,211,238,.22),transparent 70%),
             radial-gradient(520px 320px at 62% 46%,rgba(124,58,237,.12),transparent 72%);
}
.hero-grid{
  position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(37,99,235,.11) 1px,transparent 1px),linear-gradient(90deg,rgba(37,99,235,.11) 1px,transparent 1px);
  background-size:54px 54px;
  mask-image:radial-gradient(ellipse at 50% 0%,#000 8%,transparent 68%);
}
.hero-in{position:relative;display:grid;grid-template-columns:1.06fr .94fr;gap:56px;align-items:center}
@media(max-width:960px){.hero-in{grid-template-columns:1fr;gap:40px}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 12px;border-radius:99px;
  border:1px solid rgba(37,99,235,.22);background:rgba(255,255,255,.7);
  color:var(--blue);font-size:11.5px;font-weight:750;letter-spacing:.6px;margin-bottom:22px;
  backdrop-filter:blur(10px);box-shadow:var(--shadow-sm);
}
.hero h1{font-size:48px;line-height:1.12;margin:0 0 18px;font-weight:860;letter-spacing:-1.6px}
.hero h1 em{
  font-style:normal;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero p.lead{font-size:15px;color:var(--text-2);max-width:520px;margin:0 0 30px;line-height:1.8}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap}
.metrics{display:flex;gap:44px;margin-top:40px;flex-wrap:wrap}
.metric .n{font-size:24px;font-weight:840;font-family:var(--mono);letter-spacing:-.6px;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.metric .l{font-size:11.5px;color:var(--muted);letter-spacing:.4px;margin-top:2px}

.sec{padding:82px 0}
.sec-head{max-width:640px;margin-bottom:42px}
.sec-head h2{font-size:30px;margin:0 0 12px;letter-spacing:-.9px;font-weight:830}
.sec-head p{margin:0;color:var(--muted);font-size:14px}
/* 能力卡固定 4 / 2 / 1 列: auto-fit 在 1132px 内容宽下会掉成 3 列,
   4 张卡就会孤一张在第二行, 所以这里用断点钉死列数 */
.feat{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
@media(max-width:1080px){.feat{grid-template-columns:repeat(2,1fr)}}
@media(max-width:620px){.feat{grid-template-columns:1fr}}

.feat-item{
  padding:26px;border-radius:18px;transition:.22s;position:relative;overflow:hidden;
  background:linear-gradient(160deg,rgba(255,255,255,.94),rgba(255,255,255,.62));
  border:1px solid var(--hair);backdrop-filter:blur(16px);
  box-shadow:var(--shadow-sm),inset 0 1px 0 rgba(255,255,255,.95);
}
.feat-item:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:rgba(37,99,235,.26)}
.feat-ico{
  width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--grad);color:#fff;margin-bottom:16px;
  box-shadow:0 14px 26px -14px rgba(37,99,235,.9),inset 0 1px 0 rgba(255,255,255,.4);
}
.feat-item h3{margin:0 0 8px;font-size:15.5px;font-weight:750}
.feat-item p{margin:0;color:var(--muted);font-size:13px;line-height:1.75}

.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media(max-width:820px){.steps{grid-template-columns:1fr}}
.step{
  padding:28px 24px;border-radius:18px;position:relative;overflow:hidden;
  background:linear-gradient(160deg,rgba(255,255,255,.95),rgba(255,255,255,.62));
  border:1px solid var(--hair);backdrop-filter:blur(16px);
  box-shadow:var(--shadow-sm),inset 0 1px 0 rgba(255,255,255,.95);
}
.step .num{
  font-family:var(--mono);font-size:12px;font-weight:800;letter-spacing:1.6px;margin-bottom:14px;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.step h3{margin:0 0 8px;font-size:15.5px}
.step p{margin:0;color:var(--muted);font-size:13px;line-height:1.75}
.step code,.feat-item code{font-family:var(--mono);font-size:12px;background:rgba(37,99,235,.08);padding:2px 6px;border-radius:6px;border:1px solid rgba(37,99,235,.14);color:var(--blue)}

.foot{padding:44px 0;color:var(--muted-2);font-size:12.5px;border-top:1px solid rgba(255,255,255,.8)}
.foot-in{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;align-items:center}

/* ---- 动画 ---- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .65s ease,transform .65s ease}
.reveal.in{opacity:1;transform:none}

@media(max-width:820px){
  .shell{grid-template-columns:1fr}
  .side{
    position:static;height:auto;flex-direction:row;align-items:center;overflow-x:auto;
    gap:12px;padding:12px;border-right:none;border-bottom:1px solid rgba(255,255,255,.85);
  }
  .side-brand{border:none;padding:0 8px}
  .side-nav{flex-direction:row;gap:4px}
  .side-foot{display:none}
  .main{padding:20px 16px 50px}
  .hero h1{font-size:34px;letter-spacing:-1px}
  .grid[style*="1fr 1fr"]{grid-template-columns:1fr !important}
}