/* ============================================================
   FrameX · style.css
   与 app/views 模板一一对应，类名保持与模板一致
   ============================================================ */

/* ========== 设计变量 ========== */
:root{
  --bg:#0A0A0F;
  --surface:#111119;
  --surface-2:#16161F;
  --border:rgba(255,255,255,.08);
  --border-strong:rgba(255,255,255,.16);
  --text:#F4F4F7;
  --muted:#8C8C9E;
  --blue:#3B82F6;
  --green:#00E599;
  --grad:linear-gradient(135deg,#3B82F6 0%,#00E599 100%);
  --radius:16px;
  --ease:cubic-bezier(.22,1,.36,1);
}

/* ========== Reset ========== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden;
  font-family:-apple-system,BlinkMacSystemFont,"Inter","Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
::selection{background:rgba(59,130,246,.35);color:#fff}

/* 锚点跳转时留出固定导航高度 */
section[id]{scroll-margin-top:88px}

/* ========== 背景装饰 ========== */
.grid-bg{
  position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(ellipse 90% 60% at 50% 0%,#000 20%,transparent 78%);
  mask-image:radial-gradient(ellipse 90% 60% at 50% 0%,#000 20%,transparent 78%);
}
.glow{position:fixed;border-radius:50%;filter:blur(130px);pointer-events:none;z-index:0}
.glow-a{width:640px;height:640px;background:rgba(59,130,246,.20);top:-260px;left:50%;transform:translateX(-50%)}
.glow-b{width:520px;height:520px;background:rgba(0,229,153,.10);top:340px;right:-180px}
.glow-c{width:460px;height:460px;background:rgba(139,92,246,.10);top:1600px;left:-200px}

/* ========== 布局 ========== */
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 24px;position:relative;z-index:1}
.section{padding:110px 0;position:relative;z-index:1}

/* ========== 导航 ========== */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  border-bottom:1px solid transparent;
  transition:background .35s var(--ease),border-color .35s var(--ease),backdrop-filter .35s;
}
.nav.scrolled{
  background:rgba(10,10,15,.72);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom-color:var(--border);
}
.nav-inner{height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:600;letter-spacing:-.02em}
.logo-mark{
  width:26px;height:26px;border-radius:8px;background:var(--grad);
  position:relative;box-shadow:0 0 24px rgba(59,130,246,.45);flex:none;
}
.logo-mark::after{content:"";position:absolute;inset:7px;border-radius:3px;background:rgba(10,10,15,.88)}
.nav-links{display:flex;gap:32px;font-size:14px;color:var(--muted)}
.nav-links a{transition:color .2s}
.nav-links a:hover{color:var(--text)}
.nav-actions{display:flex;align-items:center;gap:12px}
.link-btn{font-size:14px;color:var(--muted);transition:color .2s}
.link-btn:hover{color:var(--text)}

/* ========== 按钮 ========== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 28px;border-radius:999px;font-size:15px;font-weight:500;
  white-space:nowrap;
  transition:transform .25s var(--ease),background .25s,border-color .25s,box-shadow .25s;
}
.btn-primary{background:#fff;color:#0A0A0F;box-shadow:0 8px 30px rgba(255,255,255,.12)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 44px rgba(255,255,255,.22)}
.btn-ghost{border:1px solid var(--border-strong);background:rgba(255,255,255,.02)}
.btn-ghost:hover{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.3);transform:translateY(-2px)}
.btn-sm{height:38px;padding:0 18px;font-size:13.5px}

/* ========== Hero ========== */
.hero{position:relative;z-index:1;padding:172px 0 96px;min-height:88vh;display:flex;align-items:center}
.hero-inner{text-align:center;max-width:900px;margin:0 auto}
.badge{
  display:inline-flex;align-items:center;gap:9px;padding:6px 14px 6px 10px;border-radius:999px;
  border:1px solid var(--border);background:rgba(255,255,255,.03);
  font-size:13px;color:var(--muted);margin-bottom:30px;
}
.badge b{color:var(--text);font-weight:500}
.dot{width:6px;height:6px;border-radius:50%;background:var(--green);box-shadow:0 0 10px var(--green);flex:none}
.hero h1{
  font-size:clamp(38px,6.2vw,74px);line-height:1.07;letter-spacing:-.035em;
  font-weight:600;color:#fff;
}
.hero h1 em{
  font-style:normal;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero p{
  max-width:580px;margin:24px auto 0;color:var(--muted);
  font-size:clamp(15px,1.5vw,17.5px);line-height:1.75;
}
.hero-actions{display:flex;gap:14px;justify-content:center;margin-top:40px;flex-wrap:wrap}
.hero-note{margin-top:26px;font-size:12.5px;color:rgba(140,140,158,.7);letter-spacing:.02em}

/* ========== 数据条 ========== */
.stats{
  border-top:1px solid var(--border);border-bottom:1px solid var(--border);
  background:rgba(255,255,255,.012);position:relative;z-index:1;
}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);padding:46px 0}
.stat{text-align:center;position:relative}
.stat + .stat::before{
  content:"";position:absolute;left:0;top:12%;bottom:12%;width:1px;
  background:linear-gradient(180deg,transparent,var(--border-strong),transparent);
}
.stat-num{
  font-size:clamp(28px,3.4vw,40px);font-weight:600;letter-spacing:-.03em;
  font-variant-numeric:tabular-nums;line-height:1.1;
}
.stat-label{font-size:13px;color:var(--muted);margin-top:8px}

/* ========== 区块标题 ========== */
.section-head{max-width:660px;margin-bottom:56px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-block;font-size:12px;font-weight:600;letter-spacing:.16em;
  text-transform:uppercase;color:var(--blue);margin-bottom:16px;
}
.section-head h2{
  font-size:clamp(26px,3.6vw,42px);line-height:1.18;letter-spacing:-.03em;
  font-weight:600;color:#fff;
}
.section-head p{color:var(--muted);margin-top:16px;font-size:16px}

/* ========== 核心能力 ========== */
.feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.card{
  position:relative;padding:34px;border-radius:var(--radius);border:1px solid var(--border);
  background:linear-gradient(180deg,rgba(255,255,255,.035),rgba(255,255,255,.01));
  transition:border-color .3s,transform .35s var(--ease),background .3s;
  overflow:hidden;
}
.card::after{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:radial-gradient(600px circle at var(--mx,50%) var(--my,0%),rgba(59,130,246,.10),transparent 45%);
  opacity:0;transition:opacity .4s;
}
.card:hover{border-color:rgba(255,255,255,.2);transform:translateY(-4px)}
.card:hover::after{opacity:1}
.icon{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  border:1px solid rgba(59,130,246,.28);background:rgba(59,130,246,.10);color:#7FB0FF;
}
.icon svg{width:22px;height:22px}
.card h3{font-size:18px;font-weight:600;letter-spacing:-.01em;margin:20px 0 10px}
.card p{font-size:14.5px;color:var(--muted);line-height:1.75}

/* ========== 定制流程 ========== */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.step{position:relative;padding-right:36px}
.step-num{
  width:40px;height:40px;border-radius:50%;display:grid;place-items:center;
  border:1px solid var(--border-strong);background:var(--surface);
  font-size:14px;font-weight:600;position:relative;z-index:1;margin-bottom:22px;
}
.step:first-child .step-num{
  border-color:transparent;background:var(--grad);color:#04140E;
  box-shadow:0 0 28px rgba(0,229,153,.35);
}
.step::after{
  content:"";position:absolute;left:52px;right:14px;top:20px;height:1px;
  background:linear-gradient(90deg,rgba(255,255,255,.2),rgba(255,255,255,.02));
}
.step:last-child::after{display:none}
.step h4{font-size:16px;font-weight:600;margin-bottom:8px;letter-spacing:-.01em}
.step p{font-size:14px;color:var(--muted);line-height:1.7}

/* ========== 案例 ========== */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.case{
  border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);
  background:var(--surface);transition:transform .4s var(--ease),border-color .3s;
}
.case:hover{transform:translateY(-6px);border-color:rgba(255,255,255,.2)}
.case-thumb{
  aspect-ratio:16/11;position:relative;display:grid;place-items:center;overflow:hidden;
}
.case-thumb::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 28% 18%,rgba(255,255,255,.2),transparent 62%);
}
.mock{
  width:64%;aspect-ratio:16/12;border-radius:10px;padding:14px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
  display:flex;flex-direction:column;gap:8px;
  transition:transform .55s var(--ease);
}
.case:hover .mock{transform:scale(1.07) rotate(-1.2deg)}
.mock-bar{height:7px;width:82%;border-radius:4px;background:rgba(255,255,255,.6)}
.mock-bar.short{width:52%;background:rgba(255,255,255,.32)}
.mock-btn{margin-top:auto;height:20px;width:60px;border-radius:999px;background:rgba(255,255,255,.92)}
.case-info{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:18px 20px}
.case-info h4{font-size:15px;font-weight:500}
.case-info span{
  font-size:12px;color:var(--muted);border:1px solid var(--border);
  padding:3px 10px;border-radius:999px;white-space:nowrap;
}

/* ========== 价格 ========== */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.price-card{
  display:flex;flex-direction:column;padding:34px;border-radius:var(--radius);
  border:1px solid var(--border);
  background:linear-gradient(180deg,rgba(255,255,255,.03),rgba(255,255,255,.008));
}
.price-card.featured{
  border:1px solid transparent;
  background:linear-gradient(var(--surface-2),var(--surface-2)) padding-box,var(--grad) border-box;
  box-shadow:0 30px 90px -40px rgba(59,130,246,.7);
}
.price-tag{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:14px;color:var(--muted);margin-bottom:20px;
}
.pill{
  font-size:11px;font-weight:600;letter-spacing:.04em;padding:4px 10px;border-radius:999px;
  background:var(--grad);color:#04140E;
}
.price-num{font-size:38px;font-weight:600;letter-spacing:-.035em;line-height:1.1;font-variant-numeric:tabular-nums}
.price-num small{font-size:14px;font-weight:400;color:var(--muted);letter-spacing:0;margin-left:6px}
.price-desc{font-size:13.5px;color:var(--muted);margin-top:10px}
.price-card ul{list-style:none;display:grid;gap:12px;margin:26px 0 30px;font-size:14px;color:var(--muted)}
.price-card li{display:flex;gap:10px;align-items:flex-start;line-height:1.6}
.price-card li::before{content:"✓";color:var(--green);font-size:13px;flex:none;margin-top:2px}
.price-card .btn{margin-top:auto;width:100%}

/* ========== 开发者板块 ========== */
.dev{
  border-radius:24px;border:1px solid var(--border);overflow:hidden;
  padding:clamp(32px,5vw,60px);
  background:
    radial-gradient(700px circle at 85% 15%,rgba(0,229,153,.10),transparent 55%),
    radial-gradient(700px circle at 10% 90%,rgba(59,130,246,.14),transparent 55%),
    rgba(255,255,255,.015);
}
.dev-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center}
.dev h2{font-size:clamp(26px,3.4vw,40px);line-height:1.18;letter-spacing:-.03em;font-weight:600;color:#fff;margin-bottom:16px}
.dev p{color:var(--muted);font-size:15.5px;line-height:1.75;max-width:460px}
.dev-actions{display:flex;gap:12px;margin-top:32px;flex-wrap:wrap}

.task-card{
  border-radius:16px;border:1px solid var(--border);padding:18px;
  background:rgba(10,10,15,.55);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  box-shadow:0 30px 80px -40px rgba(0,0,0,.9);
}
.task-head{
  display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted);
  padding-bottom:14px;border-bottom:1px solid var(--border);margin-bottom:4px;
}
.task-row{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:13px 0;border-bottom:1px solid rgba(255,255,255,.05);
}
.task-row:last-child{border-bottom:none;padding-bottom:2px}
.task-title{font-size:13.5px}
.task-meta{font-size:11.5px;color:var(--muted);margin-top:3px}
.task-price{font-size:13px;color:var(--green);font-variant-numeric:tabular-nums;white-space:nowrap}

/* ========== FAQ ========== */
.faq-list{max-width:820px;margin:0 auto;border-top:1px solid var(--border)}
.faq-item{border-bottom:1px solid var(--border)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:23px 4px;text-align:left;font-size:16px;transition:color .2s;
}
.faq-q:hover{color:#fff}
.faq-icon{width:18px;height:18px;position:relative;flex:none}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--muted);border-radius:2px;
  transition:transform .35s var(--ease),opacity .25s,background .2s;
}
.faq-icon::before{left:0;right:0;top:50%;height:1.5px;transform:translateY(-50%)}
.faq-icon::after{top:0;bottom:0;left:50%;width:1.5px;transform:translateX(-50%)}
.faq-item.open .faq-icon::after{transform:translateX(-50%) rotate(90deg);opacity:0}
.faq-item.open .faq-icon::before{background:var(--green)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s var(--ease)}
.faq-a p{padding:0 4px 24px;font-size:14.5px;color:var(--muted);line-height:1.8;max-width:700px}

/* ========== 页脚 ========== */
.footer{
  border-top:1px solid var(--border);padding:64px 0 32px;
  background:rgba(255,255,255,.012);position:relative;z-index:1;
}
.footer-grid{display:grid;grid-template-columns:1.7fr repeat(3,1fr);gap:44px}
.footer-brand p{font-size:13.5px;color:var(--muted);margin-top:16px;max-width:280px;line-height:1.75}
.footer h5{font-size:13px;font-weight:600;color:#fff;margin-bottom:16px}
.footer ul{list-style:none;display:grid;gap:11px;font-size:13.5px;color:var(--muted)}
.footer ul a{transition:color .2s}
.footer ul a:hover{color:#fff}
.footer-bottom{
  margin-top:56px;padding-top:24px;border-top:1px solid var(--border);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:rgba(140,140,158,.75);
}

/* ========== 滚动入场动画 ========== */
.reveal{
  opacity:0;translate:0 22px;
  transition:opacity .8s var(--ease),translate .8s var(--ease);
}
.reveal.in{opacity:1;translate:0 0}

@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;translate:0 0;transition:none}
  html{scroll-behavior:auto}
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
}

/* ========== 响应式 ========== */
@media (max-width:900px){
  .nav-links{display:none}
  .link-btn{display:none}
  .section{padding:74px 0}
  .hero{padding:130px 0 72px;min-height:auto}
  .section-head{margin-bottom:40px}
  .feature-grid,.case-grid,.price-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr;gap:36px}
  .step{padding-right:0}
  .step::after{display:none}
  .step-num{margin-bottom:16px}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:34px 0;padding:36px 0}
  .stat:nth-child(odd)::before{display:none}
  .stat:nth-child(3)::before{display:none}
  .dev-grid{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .footer-brand{grid-column:1/-1}
}
@media (max-width:560px){
  .hero-actions{flex-direction:column}
  .hero-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .card{padding:26px}
  .price-card{padding:28px}
  .container{padding:0 18px}
}
/* ========== 认证表单 ========== */
.auth-wrapper {
  min-height: calc(100vh - 68px);
  display: flex; align-items: center; justify-content: center;
  padding: 100px 24px 60px; position: relative; z-index: 1;
}
.auth-card {
  width: 100%; max-width: 440px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 40px;
  box-shadow: 0 30px 80px -40px rgba(0,0,0,.9);
}
.auth-header { text-align: center; margin-bottom: 32px; }
.auth-header h2 { font-size: 26px; color: #fff; font-weight: 600; letter-spacing: -0.02em; }
.auth-header p { font-size: 14.5px; color: var(--muted); margin-top: 8px; }
.form-group { margin-bottom: 20px; }
.form-label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 8px; }
.form-input {
  width: 100%; height: 48px; padding: 0 16px;
  background: rgba(255,255,255,.03); border: 1px solid var(--border);
  border-radius: 8px; color: var(--text); font-size: 14.5px;
  transition: border-color .25s, box-shadow .25s;
}
.form-input:focus {
  outline: none; border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(59,130,246,.15);
}
.form-btn { width: 100%; margin-top: 8px; }
.auth-footer { text-align: center; margin-top: 24px; font-size: 13.5px; color: var(--muted); }
.auth-footer a { color: var(--blue); transition: color .2s; }
.auth-footer a:hover { text-decoration: underline; }
.auth-alert {
  padding: 12px; border-radius: 8px; font-size: 13.5px; margin-bottom: 24px;
  text-align: center; line-height: 1.5;
}
.auth-alert.error { background: rgba(239,68,68,.1); color: #f87171; border: 1px solid rgba(239,68,68,.2); }
.auth-alert.success { background: rgba(0,229,153,.1); color: var(--green); border: 1px solid rgba(0,229,153,.2); }