/* ============================================================
   推泽 AI 外贸助手 · 品牌视觉系统
   基于 tuize.com 设计语言（深色科技 + 金色渐变）
   Powered by 推泽
   变量: --bg / --gold-grad(金渐变) / --txt 等
   ============================================================ */
:root{
  --bg:#0a0e17;          /* 主背景 深蓝黑 */
  --bg-2:#0f1522;        /* 次级背景 */
  --bg-3:#141b2d;        /* 卡片背景 */
  --line:rgba(255,255,255,.08);  /* 分割线 */
  --gold:#d4a017;        /* 主金 */
  --gold-2:#f0c33c;      /* 亮金 */
  --gold-grad:linear-gradient(135deg,#f0c33c,#d4a017 60%,#a97b0a);
  --txt:#e8edf5;         /* 主文字 */
  --txt-2:#9aa7bd;       /* 次级文字 */
  --txt-3:#6b7a93;       /* 弱化文字 */
  --shadow:0 20px 50px rgba(0,0,0,.45);
  --card-grad:linear-gradient(180deg,var(--bg-3),var(--bg-2));
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{font-family:"Microsoft YaHei","PingFang SC","Segoe UI",sans-serif;
  background:var(--bg);color:var(--txt);line-height:1.7;overflow-x:hidden;-webkit-font-smoothing:antialiased;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
.container{max-width:1180px;margin:0 auto;padding:0 24px;position:relative;z-index:1;}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px;position:relative;z-index:1;}

/* ===== 背景网格（科技底纹） ===== */
.bg-grid{position:fixed;inset:0;pointer-events:none;z-index:0;
  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:56px 56px;
  mask-image:radial-gradient(ellipse 90% 70% at 50% 0%,#000 30%,transparent 75%);
  -webkit-mask-image:radial-gradient(ellipse 90% 70% at 50% 0%,#000 30%,transparent 75%);}

/* ===== 按钮 ===== */
.btn{display:inline-block;padding:13px 30px;border-radius:8px;font-weight:700;font-size:15px;transition:all .3s;cursor:pointer;border:none;text-align:center;}
.btn-gold{background:var(--gold-grad);color:#14171f;box-shadow:0 4px 18px rgba(212,160,23,.35);}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 8px 26px rgba(212,160,23,.5);}
.btn-ghost{background:transparent;border:1px solid rgba(255,255,255,.25);color:var(--txt);}
.btn-ghost:hover{border-color:var(--gold-2);color:var(--gold-2);transform:translateY(-2px);}
.btn-lg{padding:16px 38px;font-size:16px;border-radius:10px;}

/* ===== 导航（毛玻璃 + 金块logo） ===== */
.nav{position:sticky;top:0;z-index:100;background:rgba(10,14,23,.85);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:68px;max-width:1180px;margin:0 auto;padding:0 24px;flex-wrap:wrap;}
.nav-logo{display:flex;align-items:center;gap:10px;font-size:21px;font-weight:800;letter-spacing:1px;}
.nav-logo .logo-mark{width:34px;height:34px;border-radius:8px;background:var(--gold-grad);display:flex;align-items:center;justify-content:center;font-size:18px;color:#14171f;font-weight:900;box-shadow:0 2px 10px rgba(212,160,23,.4);}
.nav-logo b{color:#fff;}
.nav-logo span{background:var(--gold-grad);-webkit-background-clip:text;background-clip:text;color:transparent;}
.nav-links{display:flex;gap:6px;flex-wrap:wrap;}
.nav-links a{padding:9px 14px;border-radius:8px;color:var(--txt-2);font-size:14px;transition:all .25s;}
.nav-links a:hover,.nav-links a.active{color:var(--gold-2);background:rgba(212,160,23,.1);}
.nav-cta{font-weight:700;color:var(--gold-2);font-size:14px;padding:9px 16px;border:1px solid rgba(212,160,23,.4);border-radius:8px;transition:all .25s;}
.nav-cta:hover{background:rgba(212,160,23,.14);}
.nav-user{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
.nav-member{font-weight:700;color:var(--gold-2);font-size:14px;padding:9px 14px;border:1px solid rgba(212,160,23,.35);border-radius:8px;transition:all .25s;}
.nav-member:hover{background:rgba(212,160,23,.14);border-color:rgba(212,160,23,.6);}

/* ===== Hero（金字渐变 + 光晕背景） ===== */
.hero{min-height:280px;display:flex;align-items:center;background:
  radial-gradient(ellipse 70% 60% at 15% 15%,rgba(212,160,23,.12),transparent 55%),
  radial-gradient(ellipse 60% 50% at 85% 80%,rgba(60,80,140,.25),transparent 60%),
  linear-gradient(180deg,#0c111d 0%,#0a0e17 100%);
  overflow:hidden;position:relative;}
.hero-inner{display:flex;align-items:center;gap:60px;padding:34px 24px;max-width:1180px;margin:0 auto;position:relative;z-index:1;flex-wrap:wrap;}
.hero-copy{flex:1;width:100%;min-width:300px;text-align:center;}
.hero-tag{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border-radius:30px;background:rgba(212,160,23,.12);border:1px solid rgba(212,160,23,.3);color:var(--gold-2);font-size:13px;font-weight:600;letter-spacing:1px;margin-bottom:22px;}
.hero-tag::before{content:'';width:7px;height:7px;border-radius:50%;background:var(--gold-2);animation:pulse 2s infinite;}
.hero h1{font-size:46px;font-weight:900;line-height:1.25;margin-bottom:20px;letter-spacing:-1px;}
.hero h1 .grad{background:var(--gold-grad);-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero h1 .stroke{color:transparent;-webkit-text-stroke:1.5px rgba(255,255,255,.28);}
.hero-sub{font-size:17px;color:var(--txt-2);max-width:600px;margin:0 auto 30px;}
.hero-btns{display:flex;gap:16px;align-items:center;flex-wrap:wrap;justify-content:center;}
.hero-points{display:flex;gap:26px;margin-top:40px;flex-wrap:wrap;}
.hero-point{display:flex;align-items:center;gap:10px;color:var(--txt-2);font-size:14px;}
.hero-point .hp{width:40px;height:40px;border-radius:10px;background:var(--bg-3);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;font-size:19px;}

/* ===== 区块标题 ===== */
.section{padding:80px 0;position:relative;}
.section-head{text-align:center;max-width:680px;margin:0 auto 50px;}
.section-eyebrow{display:inline-block;color:var(--gold-2);font-size:13px;letter-spacing:3px;font-weight:600;text-transform:uppercase;margin-bottom:14px;}
.section-title{font-size:34px;font-weight:800;letter-spacing:-.5px;margin-bottom:14px;}
.section-sub{color:var(--txt-2);font-size:16px;}
.divider{width:60px;height:3px;background:var(--gold-grad);border-radius:2px;margin:20px auto 0;}

/* ===== 卡片 ===== */
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
@media(max-width:900px){.grid{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.grid{grid-template-columns:1fr}}
.card{background:var(--card-grad);border:1px solid var(--line);border-radius:16px;padding:28px 24px;transition:all .4s;position:relative;overflow:hidden;}
.card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:var(--gold-grad);transform:scaleX(0);transform-origin:left;transition:transform .4s;}
.card:hover::before{transform:scaleX(1);}
.card:hover{transform:translateY(-6px);border-color:rgba(212,160,23,.35);box-shadow:var(--shadow);}
.card-ic{width:52px;height:52px;border-radius:12px;background:rgba(212,160,23,.12);border:1px solid rgba(212,160,23,.25);display:flex;align-items:center;justify-content:center;font-size:26px;margin-bottom:16px;}
.card h3{font-size:18px;margin-bottom:10px;color:#fff;}
.card p{color:var(--txt-2);font-size:14px;line-height:1.8;}
.card .link{display:inline-block;margin-top:14px;color:var(--gold-2);font-size:14px;font-weight:600;}

/* ===== 页脚 ===== */
.footer{padding:50px 0 36px;border-top:1px solid var(--line);background:var(--bg-2);}
.footer-inner{max-width:1180px;margin:0 auto;padding:0 24px;text-align:center;color:var(--txt-3);font-size:13px;line-height:2;}
.footer a{color:var(--txt-2);}
.footer-inner{display:flex;flex-direction:column;gap:22px;}
.foot-brand{font-size:15px;color:var(--gold-2);font-weight:700;line-height:1.7}
.foot-mid{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:14px 22px;line-height:2}
.foot-tel{display:inline-block;padding:7px 18px;border:1px solid rgba(212,160,23,.45);border-radius:30px;color:var(--gold-2)!important;font-weight:700;font-size:14px;text-decoration:none;transition:all .3s;background:rgba(212,160,23,.06);white-space:nowrap}
.foot-tel:hover{background:rgba(212,160,23,.16);box-shadow:0 0 20px rgba(212,160,23,.2)}
.foot-links{display:inline-flex;flex-wrap:wrap;gap:8px 18px;justify-content:center}
.foot-links a{color:var(--txt-2);text-decoration:none;font-size:13px;transition:color .25s}
.foot-links a:hover{color:var(--gold-2)}
.foot-copy{margin-top:4px;color:var(--txt-3);font-size:12px;line-height:2}
.foot-flink{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:6px 14px;color:var(--txt-3);font-size:12px;border-top:1px solid var(--line);padding-top:14px;margin-top:2px}
.foot-flink .fl-label{color:var(--txt-3)}
.foot-flink a{color:var(--txt-2);text-decoration:none;transition:color .25s}
.foot-flink a:hover{color:var(--gold-2)}
@media(max-width:640px){.foot-mid{flex-direction:column;gap:8px}}

/* ===== 动画 ===== */
@keyframes fadeUp{from{opacity:0;transform:translateY(36px)}to{opacity:1;transform:none}}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
.h-anim{animation:fadeUp 1s cubic-bezier(.16,1,.3,1) .05s both;}
.h-anim2{animation:fadeUp 1s cubic-bezier(.16,1,.3,1) .2s both;}
.h-anim3{animation:fadeUp 1s cubic-bezier(.16,1,.3,1) .35s both;}
.reveal{opacity:0;transform:translateY(40px);transition:opacity .9s cubic-bezier(.16,1,.3,1),transform .9s cubic-bezier(.16,1,.3,1);}
.d1{transition-delay:.1s}.d2{transition-delay:.2s}.d3{transition-delay:.3s}

/* ===== 工具页通用面板 ===== */
.panel{background:var(--card-grad);border:1px solid var(--line);border-radius:16px;padding:26px;margin-top:24px;}
.panel h2{font-size:20px;margin-bottom:8px;}
.panel .sub{color:var(--txt-2);font-size:14px;margin-bottom:20px;}
.input,.textarea,select.input{width:100%;background:var(--bg);border:2px solid #2a3350;color:var(--txt);border-radius:10px;padding:13px 14px;font-size:15px;font-family:inherit;transition:border .2s;}
.input:focus,.textarea:focus,select.input:focus{border-color:var(--gold);outline:none;box-shadow:0 0 0 3px rgba(212,160,23,.15);}
.textarea{resize:vertical;min-height:110px;}
label.fld{display:block;color:var(--txt-2);font-size:13px;font-weight:600;margin:14px 0 6px;}
.result{margin-top:20px;background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:20px;white-space:pre-wrap;color:var(--txt);font-size:14px;line-height:1.8;display:none;}
.result.show{display:block;animation:fadeUp .4s both;}
.result h3{color:var(--gold-2);font-size:15px;margin-bottom:10px;}
.src{font-size:13px;color:var(--txt-3);margin-bottom:8px;}
.hint{font-size:12px;color:var(--txt-3);margin-top:6px;}
.err{color:#ff8a8a;background:#3a1717;border:1px solid #a33;border-radius:8px;padding:10px 14px;font-size:14px;display:none;margin-top:12px;}
.err.show{display:block;}