@charset "utf-8";
/* ============================================================
   云鼎 IDC 抽奖活动 —— 新中式国风 × 科技风
   ============================================================ */

:root{
  --ink:        #10262c;
  --ink-2:      #3c5a61;
  --ink-3:      #6d8a91;
  --cyan-900:   #073d47;
  --cyan-700:   #0f6f7e;
  --cyan-500:   #17899b;
  --cyan-300:   #63b8c4;
  --cyan-50:    #eaf5f7;
  --gold:       #b98f3e;
  --gold-2:     #d9b877;
  --gold-50:    #faf3e2;
  --line:       rgba(15,111,126,.16);
  --line-2:     rgba(15,111,126,.09);
  --paper:      #f6f9fa;
  --card:       #ffffff;
  --ok:         #1f8a5f;
  --warn:       #c8811f;
  --err:        #c2453f;
  --radius:     14px;
  --radius-lg:  20px;
  --shadow:     0 8px 28px rgba(7,61,71,.08);
  --shadow-lg:  0 18px 50px rgba(7,61,71,.14);
  --serif:      "Noto Serif SC","Source Han Serif SC","Songti SC","STSong","SimSun",serif;
  --sans:       -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
body{
  margin:0;
  font-family:var(--sans);
  color:var(--ink);
  background-color:var(--paper);
  background-image:
    radial-gradient(1200px 520px at 12% -8%, rgba(23,137,155,.10), transparent 60%),
    radial-gradient(900px 420px at 100% 0%, rgba(185,143,62,.08), transparent 55%),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='48' height='48' viewBox='0 0 48 48'%3E%3Cg fill='none' stroke='%230f6f7e' stroke-opacity='.10' stroke-width='1'%3E%3Cpath d='M4 4h40v40H4z'/%3E%3Cpath d='M11 11h26v26H11z'/%3E%3Cpath d='M18 18h12v12h-12'/%3E%3C/g%3E%3C/svg%3E");
  background-repeat:no-repeat,no-repeat,repeat;
  line-height:1.7;
  font-size:15px;
}
img{ max-width:100%; }
a{ color:var(--cyan-700); text-decoration:none; }
.container{ width:100%; max-width:1120px; margin:0 auto; padding:0 20px; }

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky; top:0; z-index:50;
  background:rgba(246,249,250,.86);
  backdrop-filter:saturate(160%) blur(12px);
  -webkit-backdrop-filter:saturate(160%) blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{ display:flex; align-items:center; justify-content:space-between; height:64px; gap:16px; }
.brand{ display:flex; align-items:center; gap:10px; }
.brand-seal{
  width:34px; height:34px; border-radius:8px; flex:0 0 34px;
  background:linear-gradient(140deg,var(--cyan-700),var(--cyan-900));
  color:#eaf6f7; display:flex; align-items:center; justify-content:center;
  font-family:var(--serif); font-size:17px; letter-spacing:1px;
  box-shadow:0 3px 10px rgba(15,111,126,.3);
}
.brand-name{ font-family:var(--serif); font-size:18px; letter-spacing:2px; color:var(--cyan-900); font-weight:600; }
.brand-sub{ font-size:11px; color:var(--ink-3); letter-spacing:3px; text-transform:uppercase; }
.nav{ display:flex; align-items:center; gap:26px; }
.nav a{ color:var(--ink-2); font-size:14px; position:relative; padding:4px 0; }
.nav a:hover{ color:var(--cyan-700); }
.nav a::after{
  content:""; position:absolute; left:0; right:100%; bottom:0; height:1px;
  background:var(--cyan-500); transition:right .25s ease;
}
.nav a:hover::after{ right:0; }
.nav-cta{
  padding:7px 16px; border-radius:999px; font-size:13px;
  background:linear-gradient(135deg,var(--cyan-700),var(--cyan-500));
  color:#fff !important; box-shadow:0 4px 14px rgba(15,111,126,.28);
}
.nav-cta::after{ display:none; }

/* ============ Hero ============ */
.hero{
  position:relative; overflow:hidden;
  background:linear-gradient(135deg,#06353e 0%,#0f6f7e 52%,#1a92a4 100%);
  color:#eef9fa; padding:74px 0 88px;
}
.hero::before{
  content:""; position:absolute; inset:0; opacity:.30;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='80' viewBox='0 0 160 80'%3E%3Cg fill='none' stroke='%23bfe6ec' stroke-opacity='.55' stroke-width='1.2'%3E%3Cpath d='M8 62c0-9 7-14 14-11 2-8 10-13 17-9 4-7 13-8 18-3 7-2 13 4 11 11 6 2 8 8 6 15'/%3E%3Cpath d='M84 54c0-7 5-11 11-9 1-6 8-10 13-7 3-5 10-6 14-2 5-1 9 4 8 9'/%3E%3Cpath d='M126 70c0-6 4-9 9-8 1-5 6-8 10-5 2-4 8-5 11-1 4-1 7 3 6 7'/%3E%3C/g%3E%3C/svg%3E");
  background-repeat:repeat; background-size:160px 80px;
}
.hero::after{
  content:""; position:absolute; inset:0; opacity:.16;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='60' viewBox='0 0 60 60'%3E%3Cg fill='none' stroke='%23ffffff' stroke-opacity='.7' stroke-width='1'%3E%3Cpath d='M6 6h48v48H6z'/%3E%3Cpath d='M16 16h28v28H16z'/%3E%3Cpath d='M26 26h8v8h-8'/%3E%3C/g%3E%3C/svg%3E");
  background-size:60px 60px;
}
.hero-inner{ position:relative; z-index:2; text-align:center; }
.hero-kicker{
  display:inline-flex; align-items:center; gap:10px;
  font-size:12px; letter-spacing:6px; color:#a9dbe2;
  border:1px solid rgba(169,219,226,.35); border-radius:999px;
  padding:5px 18px 5px 20px; margin-bottom:22px;
}
.hero-title{
  font-family:var(--serif); font-weight:600;
  font-size:clamp(30px,5.4vw,52px); line-height:1.28; margin:0 0 18px;
  letter-spacing:4px; text-shadow:0 2px 22px rgba(0,0,0,.22);
}
.hero-desc{ max-width:660px; margin:0 auto 30px; color:#cfeaee; font-size:15px; }
.hero-meta{ display:flex; flex-wrap:wrap; gap:12px; justify-content:center; }
.hero-chip{
  background:rgba(255,255,255,.12); border:1px solid rgba(255,255,255,.2);
  border-radius:999px; padding:7px 18px; font-size:13px; color:#e6f6f8;
  backdrop-filter:blur(4px);
}
.hero-chip b{ font-weight:600; color:#fff; }
.hero-rule{
  margin-top:26px; font-size:13px; color:#a9dbe2; letter-spacing:1px;
}

/* 状态徽标 */
.status-badge{
  display:inline-flex; align-items:center; gap:8px;
  padding:6px 16px; border-radius:999px; font-size:13px; font-weight:600;
  border:1px solid transparent;
}
.status-badge .dot{ width:7px; height:7px; border-radius:50%; background:currentColor; }
.st-open{ background:rgba(47,197,146,.16); color:#8ef0c4; border-color:rgba(47,197,146,.4); }
.st-pending{ background:rgba(255,255,255,.14); color:#dbe9ec; border-color:rgba(255,255,255,.25); }
.st-ended{ background:rgba(200,129,31,.18); color:#f3cf94; border-color:rgba(243,207,148,.35); }

/* ============ 通用区块 ============ */
.section{ padding:62px 0; }
.section-head{ text-align:center; margin-bottom:34px; }
.section-title{
  font-family:var(--serif); font-size:26px; margin:0 0 10px; letter-spacing:3px; color:var(--cyan-900);
  position:relative; display:inline-block; padding:0 6px;
}
.section-title::before,.section-title::after{
  content:""; position:absolute; top:50%; width:34px; height:1px; background:var(--line);
}
.section-title::before{ left:-44px; }
.section-title::after{ right:-44px; }
.section-sub{ color:var(--ink-3); font-size:13.5px; margin:0; letter-spacing:1px; }

.card{
  background:var(--card); border:1px solid var(--line-2); border-radius:var(--radius-lg);
  box-shadow:var(--shadow);
}

/* ============ 奖品 ============ */
.prize-grid{ display:grid; grid-template-columns:repeat(auto-fit,minmax(230px,1fr)); gap:18px; }
.prize-card{
  position:relative; background:var(--card); border:1px solid var(--line-2);
  border-radius:var(--radius); padding:26px 20px 22px; text-align:center;
  box-shadow:var(--shadow); transition:transform .25s ease, box-shadow .25s ease;
  overflow:hidden;
}
.prize-card::before{
  content:""; position:absolute; top:0; left:0; right:0; height:3px;
  background:linear-gradient(90deg,var(--gold),var(--cyan-500));
}
.prize-card::after{
  content:""; position:absolute; right:-30px; bottom:-30px; width:110px; height:110px; border-radius:50%;
  background:radial-gradient(circle,rgba(23,137,155,.07),transparent 70%);
}
.prize-card:hover{ transform:translateY(-4px); box-shadow:var(--shadow-lg); }
.prize-seal{
  width:52px; height:52px; margin:0 auto 14px; border-radius:10px;
  background:linear-gradient(140deg,#f7ecd6,var(--gold-50));
  border:1px solid rgba(185,143,62,.4); color:var(--gold);
  font-family:var(--serif); font-size:24px; font-weight:600;
  display:flex; align-items:center; justify-content:center;
}
.prize-name{ font-family:var(--serif); font-size:18px; margin:0 0 6px; color:var(--ink); letter-spacing:1px; }
.prize-count{ font-size:13px; color:var(--cyan-700); font-weight:600; margin-bottom:4px; }
.prize-count span{ font-family:var(--serif); font-size:20px; }
.prize-remark{ font-size:12.5px; color:var(--ink-3); margin:0; min-height:20px; }

/* ============ 活动详情 ============ */
.detail-grid{ display:grid; grid-template-columns:1.15fr .85fr; gap:20px; align-items:start; }
.detail-box{ padding:26px 28px; }
.detail-box h3{
  font-family:var(--serif); font-size:17px; margin:0 0 14px; color:var(--cyan-900);
  letter-spacing:2px; display:flex; align-items:center; gap:9px;
}
.detail-box h3::before{
  content:""; width:3px; height:15px; border-radius:2px;
  background:linear-gradient(180deg,var(--cyan-500),var(--gold));
}
.detail-box p{ margin:0 0 10px; color:var(--ink-2); font-size:14px; }
.rule-list{ margin:0; padding:0; list-style:none; }
.rule-list li{
  position:relative; padding-left:20px; margin-bottom:11px; color:var(--ink-2); font-size:13.5px;
}
.rule-list li::before{
  content:""; position:absolute; left:2px; top:9px; width:6px; height:6px; border-radius:2px;
  background:var(--cyan-300); transform:rotate(45deg);
}
.time-table{ width:100%; border-collapse:collapse; font-size:13.5px; }
.time-table th,.time-table td{ padding:11px 8px; border-bottom:1px dashed var(--line-2); text-align:left; }
.time-table th{ width:86px; color:var(--ink-3); font-weight:400; }
.time-table tr:last-child th,.time-table tr:last-child td{ border-bottom:0; }

/* ============ 参与表单 ============ */
.join-wrap{ display:grid; grid-template-columns:1fr 1fr; gap:0; overflow:hidden; }
.join-left{
  padding:38px 36px;
  background:linear-gradient(160deg,#0b4b56,#0f6f7e 60%,#15899a);
  color:#dff2f5; position:relative; overflow:hidden;
}
.join-left::after{
  content:""; position:absolute; inset:0; opacity:.18;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='60' viewBox='0 0 60 60'%3E%3Cg fill='none' stroke='%23ffffff' stroke-opacity='.8' stroke-width='1'%3E%3Cpath d='M6 6h48v48H6z'/%3E%3Cpath d='M16 16h28v28H16z'/%3E%3C/g%3E%3C/svg%3E");
  background-size:60px 60px;
}
.join-left h3{
  position:relative; z-index:2; font-family:var(--serif); font-size:21px; margin:0 0 16px;
  letter-spacing:3px; color:#fff;
}
.join-left p{ position:relative; z-index:2; font-size:13.5px; color:#c5e7ec; margin:0 0 14px; }
.join-left ul{ position:relative; z-index:2; margin:0; padding-left:18px; font-size:13px; color:#bfe2e8; }
.join-left ul li{ margin-bottom:8px; }

.join-right{ padding:38px 36px; background:#fff; }
.field{ margin-bottom:18px; }
.field label{
  display:block; font-size:13px; color:var(--ink-2); margin-bottom:7px; font-weight:600;
}
.field label em{ font-style:normal; color:var(--ink-3); font-weight:400; font-size:12px; }
.input-wrap{ position:relative; }
.input-wrap .ico{
  position:absolute; left:13px; top:50%; transform:translateY(-50%);
  color:var(--cyan-300); font-size:14px; pointer-events:none;
}
.input{
  width:100%; height:46px; padding:0 14px 0 38px; font-size:14px; color:var(--ink);
  border:1px solid var(--line); border-radius:10px; background:#fbfdfd;
  transition:border-color .2s, box-shadow .2s, background .2s; font-family:inherit;
}
.input::placeholder{ color:#a9bfc4; }
.input:focus{
  outline:none; border-color:var(--cyan-500); background:#fff;
  box-shadow:0 0 0 3px rgba(23,137,155,.12);
}
.input:disabled{ background:#f1f4f5; color:#9fb2b7; cursor:not-allowed; }
.field-tip{ font-size:12px; color:var(--ink-3); margin-top:6px; min-height:18px; }
.field-tip.err{ color:var(--err); }

.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  height:48px; padding:0 30px; border:0; border-radius:999px; cursor:pointer;
  font-size:15px; font-family:inherit; letter-spacing:2px; color:#fff;
  background:linear-gradient(135deg,var(--cyan-700),var(--cyan-500));
  box-shadow:0 8px 22px rgba(15,111,126,.28);
  transition:transform .18s ease, box-shadow .18s ease, opacity .18s;
  width:100%;
}
.btn:hover{ transform:translateY(-2px); box-shadow:0 12px 28px rgba(15,111,126,.34); }
.btn:active{ transform:translateY(0); }
.btn:disabled{
  background:#c3d2d5; box-shadow:none; cursor:not-allowed; transform:none; color:#f4f8f9;
}
.btn-ghost{
  background:transparent; border:1px solid var(--line); color:var(--cyan-700);
  box-shadow:none; height:40px; font-size:13.5px; letter-spacing:1px;
}
.btn-ghost:hover{ background:var(--cyan-50); box-shadow:none; }

.notice{
  display:flex; align-items:flex-start; gap:10px; margin-top:16px; padding:12px 14px;
  border-radius:10px; font-size:13px; line-height:1.6;
  background:var(--cyan-50); border:1px solid var(--line-2); color:var(--cyan-700);
}
.notice.warn{ background:#fdf5e7; border-color:rgba(200,129,31,.25); color:#9c6512; }
.notice.err{ background:#fdecea; border-color:rgba(194,69,63,.22); color:var(--err); }
.notice .n-ico{ flex:0 0 18px; font-size:14px; line-height:1.5; }

/* ============ 中奖公示 ============ */
.winner-box{ padding:30px 28px; }
.winner-list{ display:grid; grid-template-columns:repeat(auto-fit,minmax(280px,1fr)); gap:14px; }
.winner-group{ border:1px solid var(--line-2); border-radius:12px; padding:16px 18px; background:#fbfdfd; }
.winner-group h4{
  margin:0 0 12px; font-size:14px; font-family:var(--serif); letter-spacing:2px;
  color:var(--gold); display:flex; align-items:center; gap:8px;
}
.winner-group h4 .cnt{ font-size:12px; color:var(--ink-3); font-family:var(--sans); letter-spacing:0; }
.winner-item{
  display:flex; align-items:center; justify-content:space-between; gap:10px;
  padding:7px 0; border-bottom:1px dashed var(--line-2); font-size:13.5px; color:var(--ink-2);
}
.winner-item:last-child{ border-bottom:0; }
.winner-item .who{ font-family:ui-monospace,Menlo,Consolas,monospace; font-size:12.5px; color:var(--ink); }
.winner-item .tm{ font-size:12px; color:var(--ink-3); }
.empty{
  text-align:center; padding:46px 20px; color:var(--ink-3); font-size:14px;
}
.empty .e-ico{ font-size:30px; display:block; margin-bottom:10px; opacity:.45; }

/* ============ 页脚 ============ */
.site-footer{
  margin-top:20px; padding:34px 0; border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,0),rgba(255,255,255,.6));
  color:var(--ink-3); font-size:13px; text-align:center;
}
.site-footer .f-line{ margin:4px 0; }

/* ============ Toast ============ */
.toast-layer{ position:fixed; left:50%; bottom:40px; transform:translateX(-50%); z-index:999; display:flex; flex-direction:column; gap:10px; align-items:center; pointer-events:none; }
.toast{
  min-width:220px; max-width:88vw; padding:13px 22px; border-radius:10px;
  background:rgba(16,38,44,.94); color:#eef7f8; font-size:14px; text-align:center;
  box-shadow:0 12px 30px rgba(0,0,0,.28); animation:toastIn .26s ease;
  display:flex; align-items:center; gap:9px; justify-content:center;
}
.toast.ok{ background:rgba(23,111,95,.95); }
.toast.err{ background:rgba(160,52,47,.95); }
.toast.warn{ background:rgba(168,104,20,.95); }
@keyframes toastIn{ from{ opacity:0; transform:translateY(14px); } to{ opacity:1; transform:none; } }
.toast.out{ opacity:0; transform:translateY(10px); transition:opacity .25s, transform .25s; }

/* ============ 后台入口 ============ */
.admin-entry{
  position:fixed; right:18px; bottom:18px; z-index:60;
  width:42px; height:42px; border-radius:50%; display:flex; align-items:center; justify-content:center;
  background:rgba(16,38,44,.28); color:#fff; font-size:16px; opacity:.35;
  transition:opacity .2s, background .2s;
}
.admin-entry:hover{ opacity:1; background:var(--cyan-700); }

/* ============ 响应式 ============ */
@media (max-width:900px){
  .detail-grid{ grid-template-columns:1fr; }
  .join-wrap{ grid-template-columns:1fr; }
  .nav{ gap:0; }
  .nav a:not(.nav-cta){ display:none; }
}
@media (max-width:600px){
  body{ font-size:14.5px; }
  .container{ padding:0 16px; }
  .hero{ padding:52px 0 64px; }
  .hero-kicker{ letter-spacing:3px; font-size:11px; }
  .hero-title{ letter-spacing:2px; }
  .section{ padding:44px 0; }
  .section-title{ font-size:21px; }
  .section-title::before,.section-title::after{ display:none; }
  .join-left,.join-right{ padding:28px 22px; }
  .detail-box{ padding:22px 20px; }
  .winner-box{ padding:22px 18px; }
  .btn{ height:46px; letter-spacing:1px; }
}