/* 传奇3D纯净点卡版 —— 仿剑网3结构 / 暗红金主题 */
:root{
  --bg:#0a0708; --bg2:#120c0e; --card:#171013; --card2:#1d1418;
  --red:#c0392b; --red2:#8b1a1a; --gold:#e8c37a; --gold2:#c9a227;
  --txt:#cfc8c2; --dim:#8a8380; --line:rgba(232,195,122,.14);
}
*{margin:0;padding:0;box-sizing:border-box}
body{background:var(--bg);color:var(--txt);
  font:15px/1.9 -apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  -webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:var(--gold);text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:1400px;margin:0 auto;padding:0 30px}

/* ── 顶部工具条 ── */
.topbar{background:#080506;border-bottom:1px solid rgba(255,255,255,.05);height:36px;font-size:13px}
.topbar-in{display:flex;align-items:center;height:36px;gap:22px}
.topbar .tl{display:flex;align-items:center;gap:9px;color:var(--dim);font-size:12.5px;letter-spacing:1px}
.topbar .tl img{width:20px;height:20px;border-radius:4px}
.topbar .tr{margin-left:auto;display:flex;gap:20px}
.topbar .tr a{color:var(--dim);font-size:12.5px;transition:.2s}
.topbar .tr a:hover{color:var(--gold)}

/* ── 主导航 ── */
.hd{position:sticky;top:0;z-index:100;background:rgba(10,7,8,.94);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line);height:64px}
.hd-in{display:flex;align-items:center;height:64px;gap:36px}
.logo{display:flex;align-items:center;gap:12px;flex-shrink:0}
.logo img{width:40px;height:40px;border-radius:9px}
.logo b{font-size:16px;color:#fff;letter-spacing:1px;display:block;line-height:1.2}
.logo i{font-size:9.5px;color:var(--dim);letter-spacing:2px;font-style:normal}
.nav{display:flex;gap:32px}
.nav a{color:var(--txt);font-size:15px;letter-spacing:1.5px;transition:.2s;padding:4px 0;position:relative}
.nav a:hover,.nav a.on{color:var(--gold)}
.nav a.on::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;
  background:linear-gradient(90deg,transparent,var(--gold),transparent)}
.hd-r{margin-left:auto;display:flex;gap:12px;align-items:center}
.btn-sm{padding:8px 18px;border-radius:5px;font-size:13px;letter-spacing:1px;transition:.2s}
.btn-sm.fill{background:linear-gradient(135deg,var(--red),var(--red2));color:#fff;
  box-shadow:0 4px 14px rgba(192,57,43,.3)}
.btn-sm.fill:hover{box-shadow:0 6px 20px rgba(192,57,43,.5)}
.btn-sm.line{border:1px solid var(--line);color:var(--gold)}
.btn-sm.line:hover{background:rgba(232,195,122,.08)}

/* ── 全屏 Hero ── */
.hero{position:relative;min-height:660px;display:flex;align-items:center;
  background:
    radial-gradient(ellipse 60% 50% at 72% 30%,rgba(192,57,43,.28),transparent 65%),
    radial-gradient(ellipse 50% 40% at 20% 75%,rgba(201,162,39,.12),transparent 70%),
    linear-gradient(160deg,#12080a 0%,#0a0708 55%,#150a0c 100%);
  overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;
  background-image:radial-gradient(circle at 15% 25%,rgba(255,255,255,.035) 0,transparent 2px);
  background-size:70px 70px;pointer-events:none}
.hero-in{position:relative;z-index:2;width:100%;display:flex;align-items:center;gap:60px;padding:50px 0}
.hero-l{flex:1;min-width:0}
.hero-tag{display:inline-block;padding:5px 16px;border:1px solid rgba(232,195,122,.3);
  border-radius:20px;font-size:12px;color:var(--gold);letter-spacing:3px;margin-bottom:24px;
  background:rgba(232,195,122,.05)}
.hero h1{font-size:clamp(34px,5vw,68px);line-height:1.15;letter-spacing:3px;
  background:linear-gradient(180deg,#fff8e8,#f1d79a 45%,#c08427);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  margin-bottom:16px;font-weight:800}
.hero h1 em{display:block;font-style:normal;font-size:.34em;letter-spacing:12px;
  background:none;-webkit-text-fill-color:var(--gold);color:var(--gold);
  margin-top:14px;font-weight:400}
.hero-sub{font-size:17px;color:#b8b0a8;letter-spacing:2px;margin-bottom:8px}
.hero-sub2{font-size:14px;color:var(--dim);letter-spacing:1px;margin-bottom:34px}

/* 下载矩阵 */
.dl-matrix{margin-top:4px}
.dl-matrix .dm-title{font-size:14px;color:var(--gold);letter-spacing:3px;margin-bottom:16px;
  display:flex;align-items:center;gap:10px}
.dl-matrix .dm-title::after{content:"";flex:1;height:1px;
  background:linear-gradient(90deg,rgba(232,195,122,.4),transparent)}
.dm-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;max-width:640px}
.dm-item{display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:8px;padding:20px 10px;background:rgba(23,16,19,.85);
  border:1px solid var(--line);border-radius:9px;transition:.25s;cursor:pointer}
.dm-item:hover{background:rgba(192,57,43,.14);border-color:rgba(232,195,122,.4);
  transform:translateY(-3px)}
.dm-item svg{width:26px;height:26px;fill:var(--gold)}
.dm-item b{font-size:14px;color:#fff;font-weight:500;letter-spacing:.5px}
.dm-item small{font-size:11px;color:var(--dim)}

/* Hero 右侧操作 */
.hero-r{flex:0 0 260px;display:flex;flex-direction:column;gap:12px}
.act-btn{display:flex;align-items:center;gap:14px;padding:18px 22px;
  background:rgba(23,16,19,.9);border:1px solid var(--line);border-radius:10px;
  transition:.25s}
.act-btn:hover{border-color:rgba(232,195,122,.4);background:rgba(29,20,24,.95)}
.act-btn .ic{width:38px;height:38px;flex:0 0 38px;border-radius:50%;
  background:linear-gradient(135deg,rgba(192,57,43,.25),rgba(201,162,39,.15));
  display:flex;align-items:center;justify-content:center}
.act-btn .ic svg{width:19px;height:19px;fill:var(--gold)}
.act-btn .tx b{display:block;font-size:15px;color:#fff;font-weight:500;line-height:1.3}
.act-btn .tx small{font-size:11.5px;color:var(--dim)}

/* ── 内容区（白底风格块）── */
.main-sec{padding:64px 0;background:var(--bg)}
.main-in{display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:start}

/* 左侧大卡 */
.feature-card{position:relative;border-radius:14px;overflow:hidden;min-height:420px;
  background:linear-gradient(150deg,#1d1013,#251316 40%,#14090b);
  border:1px solid var(--line);display:flex;flex-direction:column;justify-content:flex-end;
  padding:34px;transition:.3s}
.feature-card:hover{border-color:rgba(232,195,122,.35)}
.feature-card::before{content:"";position:absolute;inset:0;
  background:radial-gradient(ellipse 70% 60% at 70% 20%,rgba(192,57,43,.3),transparent 65%)}
.feature-card .fc-tag{position:relative;font-size:11px;color:var(--gold);letter-spacing:4px;margin-bottom:12px}
.feature-card h3{position:relative;font-size:28px;color:#fff;letter-spacing:2px;margin-bottom:10px}
.feature-card p{position:relative;font-size:14px;color:#a8a09a;line-height:1.9;max-width:420px}
.feature-card .fc-more{position:relative;margin-top:20px;font-size:13px;color:var(--gold);letter-spacing:1px}

/* 右侧资讯 Tab */
.news-box{background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.news-tabs{display:flex;border-bottom:1px solid var(--line);padding:0 6px}
.news-tabs .t{padding:18px 22px;font-size:15px;color:var(--dim);cursor:pointer;
  letter-spacing:2px;position:relative;transition:.2s}
.news-tabs .t:hover{color:var(--txt)}
.news-tabs .t.on{color:var(--gold)}
.news-tabs .t.on::after{content:"";position:absolute;left:22px;right:22px;bottom:-1px;
  height:2px;background:var(--gold)}
.news-list{list-style:none;padding:12px 26px 22px}
.news-list li{padding:15px 0;border-bottom:1px dashed rgba(255,255,255,.06);
  display:flex;align-items:center;gap:12px}
.news-list li:last-child{border-bottom:0}
.news-list .tg{flex:0 0 auto;font-size:11px;color:var(--gold);border:1px solid var(--line);
  padding:1px 8px;border-radius:3px;letter-spacing:1px}
.news-list .ti{flex:1;font-size:14.5px;color:var(--txt);overflow:hidden;
  text-overflow:ellipsis;white-space:nowrap}
.news-list .ti:hover{color:var(--gold)}
.news-list time{flex:0 0 auto;font-size:12px;color:var(--dim)}

/* ── 特色三卡 ── */
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:30px;transition:.25s}
.card:hover{border-color:rgba(232,195,122,.35);transform:translateY(-3px)}
.card .num{font-size:34px;color:rgba(232,195,122,.2);font-weight:700;line-height:1;margin-bottom:12px}
.card h3{font-size:17px;color:var(--gold);margin-bottom:12px;letter-spacing:1px}
.card p{font-size:14px;color:var(--txt);line-height:1.95}

.sec{padding:64px 0}
.sec-h{text-align:center;margin-bottom:44px}
.sec-h h2{font-size:clamp(22px,2.6vw,32px);color:#fff;letter-spacing:5px;margin-bottom:10px}
.sec-h h2 em{font-style:normal;color:var(--gold)}
.sec-h i{display:block;font-size:11px;color:var(--dim);letter-spacing:7px;font-style:normal}
.sec-h::after{content:"";display:block;width:70px;height:2px;margin:20px auto 0;
  background:linear-gradient(90deg,transparent,var(--gold2),transparent)}

/* FAQ */
.qa details{background:var(--card);border:1px solid var(--line);border-radius:10px;
  padding:18px 22px;margin-bottom:12px}
.qa summary{font-size:15px;color:#fff;cursor:pointer;list-style:none;position:relative;padding-left:26px}
.qa summary::before{content:"Q";position:absolute;left:0;color:var(--gold);font-weight:700}
.qa summary::-webkit-details-marker{display:none}
.qa details[open] summary{margin-bottom:12px;color:var(--gold)}
.qa p{font-size:14.5px;color:var(--txt);line-height:1.95;padding-left:26px}

/* 页脚 */
.ft{background:var(--bg2);border-top:1px solid var(--line);padding:44px 0 30px;margin-top:20px}
.ft-links{display:flex;gap:26px;justify-content:center;flex-wrap:wrap;margin-bottom:24px;font-size:14px}
.ft-links a{color:var(--txt)}
.ft-links a:hover{color:var(--gold)}
.ft-legal{text-align:center;font-size:12px;color:var(--dim);line-height:2;
  border-top:1px solid var(--line);padding-top:22px}
.ft-legal b{color:var(--txt);font-weight:400}

/* ── 响应式 ── */
@media(max-width:1100px){
  .main-in{grid-template-columns:1fr}
  .hero-in{flex-direction:column;gap:36px;padding:40px 0}
  .hero-r{flex:none;width:100%;max-width:640px;flex-direction:row;gap:14px}
  .act-btn{flex:1}
  .dm-grid{max-width:none}
}
@media(max-width:820px){
  .topbar{display:none}
  .nav{display:none}
  .hero{min-height:auto;padding:34px 0}
  .hero h1{font-size:32px}
  .hero h1 em{letter-spacing:6px}
  .dm-grid{grid-template-columns:repeat(2,1fr)}
  .hero-r{flex-direction:column}
  .grid3{grid-template-columns:1fr}
  .hero-tag{font-size:11px;letter-spacing:2px}
  .wrap{padding:0 18px}
}