:root{
  --navy:#07122b; --navy2:#0b1d3f; --card:#ffffff;
  --blue:#1a6ee8; --blue-d:#0a4ad0; --cyan:#06c3e6;
  --orange:#f5681f; --ink:#1d2a3d; --grey:#6b7a8d; --line:#dce6f2;
  --grad:linear-gradient(135deg,#0a4ad0,#1a6ee8 45%,#06c3e6);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei",system-ui,sans-serif;background:var(--navy);color:#eaf2fb;line-height:1.6}
img{display:block}
a{color:inherit;text-decoration:none}

/* 顶栏 */
.nav{position:sticky;top:0;z-index:50;background:rgba(7,18,43,.82);backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,255,255,.07)}
.nav-inner{max-width:1080px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:12px 20px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:20px}
.brand img{width:38px;height:38px;border-radius:10px}
.brand small{display:block;font-size:10px;letter-spacing:2px;color:#8fb4e8;font-weight:400}
.nav-links{display:flex;gap:22px;font-size:14px}
.nav-links a{color:#bcd2ee;transition:color .2s}
.nav-links a:hover{color:#fff}

/* Hero */
.hero{position:relative;padding:64px 20px 80px;overflow:hidden;background:radial-gradient(1200px 600px at 50% -10%,#10316e 0%,var(--navy) 60%)}
.routes{position:absolute;inset:0;width:100%;height:100%;opacity:.5;pointer-events:none}
.routes path{fill:none;stroke:#2e6fd8;stroke-width:1.2;stroke-dasharray:4 7;animation:dash 30s linear infinite}
.routes circle.city{fill:#37d6f5}
.routes circle.mover{fill:url(#dot)}
@keyframes dash{to{stroke-dashoffset:-600}}
.hero-inner{position:relative;max-width:760px;margin:0 auto;text-align:center}
.hero h1{font-size:46px;line-height:1.25;font-weight:800;letter-spacing:1px}
.hero h1 .grad{display:block;background:linear-gradient(90deg,#4aa0ff,#37d6f5);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .sub{margin-top:14px;color:#a9c4e6;font-size:17px}
.badges{margin-top:22px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.badges span{padding:8px 20px;border-radius:999px;border:1px solid rgba(120,180,255,.35);background:rgba(40,90,180,.25);font-size:14px;color:#cfe3ff}

/* 估价器卡片 */
.card{background:var(--card);color:var(--ink);border-radius:22px;box-shadow:0 24px 60px rgba(0,10,40,.45)}
.estimator{position:relative;max-width:860px;margin:46px auto 0;padding:30px 30px 26px}
.estimator h2{font-size:24px;margin-bottom:18px;text-align:center}
.est-grid{display:grid;gap:20px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--grey);margin-bottom:8px}
.field .hint{color:var(--blue);font-weight:400;font-size:12px}
select{width:100%;padding:13px 14px;font-size:16px;border:2px solid var(--line);border-radius:12px;background:#f8fbff;color:var(--ink);outline:none}
select:focus{border-color:var(--blue)}
.lv-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:10px}
.lv-btn{padding:12px 8px;border:2px solid var(--line);border-radius:14px;background:#f8fbff;cursor:pointer;text-align:center;transition:all .15s;font-family:inherit}
.lv-btn b{display:block;font-size:16px;color:var(--ink)}
.lv-btn small{font-size:11px;color:var(--grey);line-height:1.3;display:block;margin-top:3px}
.lv-btn.on{border-color:var(--blue);background:#eaf3ff;box-shadow:0 4px 14px rgba(26,110,232,.18)}
.lv-btn:disabled{opacity:.38;cursor:not-allowed}
input[type=range]{width:100%;accent-color:var(--blue);height:34px}
.w-input-wrap{float:right;display:flex;align-items:center;gap:6px;font-size:15px;font-weight:700;color:var(--blue)}
.w-input-wrap input{width:84px;padding:7px 10px;font-size:17px;font-weight:800;color:var(--blue);text-align:center;border:2px solid var(--line);border-radius:10px;background:#f8fbff;outline:none;font-family:inherit}
.w-input-wrap input:focus{border-color:var(--blue)}
.w-input-wrap input::-webkit-outer-spin-button,.w-input-wrap input::-webkit-inner-spin-button{opacity:1}
.w-marks{display:flex;justify-content:space-between;font-size:11px;color:#9fb0c2;margin-top:-4px}

/* 结果卡 */
.result{margin-top:20px;border-radius:18px;background:linear-gradient(135deg,#f2f8ff,#e8f6fd);border:1.5px solid #cfe4fa;padding:22px 24px;display:flex;gap:22px;align-items:center;flex-wrap:wrap}
.result .price{font-size:46px;font-weight:900;color:var(--orange);line-height:1}
.result .price small{font-size:16px;font-weight:600}
.result .meta{flex:1;min-width:200px}
.result .meta .cmp{font-size:15px;color:var(--ink);font-weight:600}
.result .meta .eta{font-size:13px;color:var(--grey);margin-top:4px}
.result .meta .tip{margin-top:8px;font-size:13px;color:#0a6ebd;background:#e3f3ff;border-radius:8px;padding:6px 10px;display:inline-block}
.result .go{background:var(--grad);color:#fff;border:none;border-radius:12px;padding:13px 22px;font-size:15px;font-weight:700;cursor:pointer;font-family:inherit}
.result .na{font-size:15px;color:var(--grey)}

/* 通用 section */
.sec{padding:72px 20px;max-width:1080px;margin:0 auto}
.sec.alt{max-width:none;background:var(--navy2)}
.sec.alt>*{max-width:1080px;margin-left:auto;margin-right:auto}
.sec-title{text-align:center;font-size:32px;font-weight:800}
.sec-sub{text-align:center;color:#a9c4e6;margin-top:8px}

/* 能不能寄 */
.search-wrap{max-width:560px;margin:26px auto 0}
#itemSearch{width:100%;padding:15px 18px;font-size:16px;border-radius:14px;border:2px solid rgba(120,180,255,.3);background:rgba(255,255,255,.06);color:#fff;outline:none}
#itemSearch::placeholder{color:#7e96b5}
#itemSearch:focus{border-color:var(--cyan)}
.search-result{margin-top:12px;min-height:30px}
.sr-card{background:#fff;color:var(--ink);border-radius:14px;padding:14px 18px;font-size:15px;display:flex;align-items:center;gap:12px}
.sr-card .tag{padding:4px 12px;border-radius:999px;font-size:13px;font-weight:700;white-space:nowrap}
.tag.green{background:#e2f6e8;color:#1d8a45}.tag.blue{background:#e3effe;color:#1a6ee8}
.tag.yellow{background:#fdf3d7;color:#b07c0a}.tag.orange{background:#fde8da;color:#d4540e}.tag.red{background:#fde2e2;color:#c0392b}
.lv-explain{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px;margin-top:34px}
.lvx{background:rgba(255,255,255,.05);border:1px solid rgba(120,180,255,.18);border-radius:16px;padding:20px;text-align:center}
.lvx h3{font-size:19px}
.lvx p{font-size:13px;color:#a9c4e6;margin:8px 0 10px}
.lvx span{font-size:12px;padding:4px 12px;border-radius:999px;background:rgba(55,214,245,.12);color:#37d6f5}
.lvx[data-c=green] h3{color:#5ad48a}.lvx[data-c=blue] h3{color:#5aa6ff}.lvx[data-c=yellow] h3{color:#f3c95c}.lvx[data-c=orange] h3{color:#ff9357}
.banlist{text-align:center;margin-top:22px;font-size:13px;color:#8fa6c4}

/* 步骤 */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px;margin-top:36px}
.step{background:rgba(255,255,255,.05);border:1px solid rgba(120,180,255,.16);border-radius:18px;padding:28px 22px;text-align:center}
.step i{display:inline-flex;width:46px;height:46px;border-radius:50%;background:var(--grad);font-style:normal;font-weight:800;font-size:20px;align-items:center;justify-content:center;color:#fff}
.step h3{margin-top:14px;font-size:19px}
.step p{margin-top:8px;font-size:13.5px;color:#a9c4e6}

/* 国家专区 */
.country-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px;margin-top:34px}
.c-card{background:#fff;color:var(--ink);border-radius:18px;padding:22px;cursor:pointer;transition:transform .15s;border:2px solid transparent}
.c-card:hover{transform:translateY(-3px)}
.c-card .c-head{display:flex;align-items:center;justify-content:space-between}
.c-card h3{font-size:21px}
.c-card .flag{font-size:30px}
.c-card .c-price{margin-top:10px;font-size:14px;color:var(--grey)}
.c-card .c-price b{color:var(--orange);font-size:20px}
.c-card .c-eta{margin-top:6px;font-size:12.5px;color:var(--grey)}
.c-card .c-more{margin-top:12px;display:none;border-top:1px dashed var(--line);padding-top:12px;font-size:13.5px}
.c-card.open{border-color:var(--blue)}
.c-card.open .c-more{display:block}
.c-more table{width:100%;border-collapse:collapse;margin-top:6px}
.c-more td{padding:5px 4px;border-bottom:1px solid #eef4fa;font-size:13px}
.c-more td:last-child{text-align:right;font-weight:700;color:var(--orange)}
.c-more .sea-note{margin-top:10px;font-size:12.5px;color:#0a6ebd;background:#ecf6ff;border-radius:8px;padding:8px 10px}

/* 信任 */
.trust{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-top:36px}
.t-item{background:rgba(255,255,255,.05);border:1px solid rgba(120,180,255,.16);border-radius:16px;padding:24px}
.t-item b{font-size:17px;background:linear-gradient(90deg,#4aa0ff,#37d6f5);-webkit-background-clip:text;background-clip:text;color:transparent}
.t-item p{margin-top:8px;font-size:13.5px;color:#a9c4e6}

/* FAQ */
.faq-list{max-width:720px;margin:30px auto 0}
details{background:rgba(255,255,255,.05);border:1px solid rgba(120,180,255,.16);border-radius:14px;margin-bottom:12px;padding:0 20px}
summary{padding:16px 0;font-size:16px;font-weight:600;cursor:pointer;list-style:none}
summary::before{content:"+";margin-right:10px;color:var(--cyan);font-weight:800}
details[open] summary::before{content:"−"}
details p{padding:0 0 16px 24px;font-size:14px;color:#a9c4e6}

/* CTA */
.cta{text-align:center;padding:80px 20px;background:radial-gradient(700px 360px at 50% 0%,#10316e 0%,var(--navy) 70%)}
.cta h2{font-size:32px}
.cta p{color:#a9c4e6;margin-top:10px}
.cta .qr{width:200px;height:200px;margin:26px auto 0;border-radius:18px;background:#fff;padding:10px}
.qr-tip{font-size:13px}
.footer{text-align:center;padding:26px;font-size:12.5px;color:#5e7390;border-top:1px solid rgba(255,255,255,.06)}

/* 悬浮码 */
.float-qr{position:fixed;right:18px;bottom:18px;z-index:60;background:#fff;border-radius:16px;padding:10px;box-shadow:0 10px 30px rgba(0,10,40,.4);display:flex;flex-direction:column;align-items:center;gap:4px;cursor:pointer;transition:transform .15s}
.float-qr:hover{transform:scale(1.04)}
.float-qr img{width:74px;height:74px}
.float-qr span{font-size:11px;color:var(--ink);font-weight:700;text-align:center;line-height:1.2}

@media (max-width:640px){
  .nav-links{display:none}
  .hero h1{font-size:32px}
  .estimator{padding:22px 16px}
  .result .price{font-size:38px}
  .sec{padding:54px 16px}
  .sec-title{font-size:26px}
  .float-qr img{width:58px;height:58px}
}