/* ============================================================
   下载页 · 经典风（仿 dnfclassic.com/download）
   浅灰蓝底 + 金色主色 + Noto Sans SC
   网格系统 / 手风琴 / 移动端菜单均为自写实现，不依赖外部 CDN
   内容由 /api/content 的 downloadPageClassic 驱动（见 download-classic.js）
   ============================================================ */
:root{
  --bg:#f0f2f7;
  --bg2:#e6e9f0;
  --card:#ffffff;
  --card-h:#f8f9fc;
  --red:#d63031;
  --red-l:#e74c3c;
  --gold:#b7791f;
  --gold-l:#d69e2e;
  --gold-bg:rgba(183,121,31,.08);
  --cyan:#0984e3;
  --cyan-l:#2d9cdb;
  --cyan-bg:rgba(9,132,227,.08);
  --green:#00a878;
  --green-bg:rgba(0,168,120,.08);
  --red-bg:rgba(214,48,49,.08);
  --t1:#1a1a2e;
  --t2:#4a4a6a;
  --t3:#8888a0;
  --bd:#d5d9e2;
  --bd-l:#e8ebf0;
  --f:'Noto Sans SC',-apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei',sans-serif;
  --r:8px;
  --shadow:0 1px 3px rgba(26,26,46,.06),0 4px 16px rgba(26,26,46,.04);
  --shadow-h:0 4px 12px rgba(26,26,46,.08),0 12px 36px rgba(26,26,46,.06);
  --nav-h:60px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--f);background:var(--bg);color:var(--t1);overflow-x:hidden;line-height:1.7}

/* 细网格背景 + 扫描线（还原参考站质感） */
.grid-bg{background-image:linear-gradient(rgba(26,26,46,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(26,26,46,.03) 1px,transparent 1px);background-size:50px 50px}
body::after{content:'';position:fixed;inset:0;pointer-events:none;z-index:9999;background:repeating-linear-gradient(0deg,transparent,transparent 3px,rgba(0,0,0,.006) 3px,rgba(0,0,0,.006) 6px)}
.bg2{background:var(--bg2)}

/* ---------- 网格系统（自写，替代 Bootstrap） ---------- */
.container{width:100%;max-width:1140px;margin:0 auto;padding:0 12px}
.row{display:flex;flex-wrap:wrap;margin:0 -12px}
.row>[class*="col-"]{padding:0 12px;width:100%}
.col-6{flex:0 0 50%;max-width:50%}
.col-lg-4{flex:0 0 33.3333%;max-width:33.3333%}
.col-lg-5{flex:0 0 41.6667%;max-width:41.6667%}
.col-lg-7{flex:0 0 58.3333%;max-width:58.3333%}
.col-lg-8{flex:0 0 66.6667%;max-width:66.6667%}
.col-md-4{flex:0 0 33.3333%;max-width:33.3333%}
.row.g-3{margin:0 -8px;row-gap:16px}
.row.g-3>[class*="col-"]{padding:0 8px}
.row.g-4{margin:0 -12px;row-gap:24px}
.mt-4{margin-top:1.5rem}
.mb-3{margin-bottom:1rem}
.mb-4{margin-bottom:1.5rem}
.me-2{margin-right:.5rem}
.mt-2{margin-top:.5rem}
@media(max-width:991px){
  .col-lg-4,.col-lg-5,.col-lg-7,.col-lg-8{flex:0 0 100%;max-width:100%}
  .mb-lg-0{margin-bottom:0!important}
}
@media(max-width:767px){
  .col-md-4,.col-6{flex:0 0 100%;max-width:100%}
}

/* ---------- 导航 ---------- */
.nav-a{background:rgba(255,255,255,.88);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid var(--bd);padding:.6rem 0;transition:.3s;position:fixed;top:0;left:0;right:0;z-index:1030}
.nav-a.scrolled{box-shadow:0 2px 20px rgba(26,26,46,.07)}
.nav-a .container{display:flex;align-items:center;justify-content:space-between;gap:1rem}
.navbar-brand{font-weight:900;font-size:1.25rem;color:var(--gold);letter-spacing:1px;display:flex;align-items:center;gap:8px;text-decoration:none;white-space:nowrap}
.brand-ico{width:32px;height:32px;background:linear-gradient(135deg,var(--gold-l),var(--gold));border-radius:6px;display:flex;align-items:center;justify-content:center;font-size:15px;color:#fff;flex-shrink:0}
.brand-ico svg{width:15px;height:15px}
.navbar-toggler{display:none;border:1px solid var(--bd);background:var(--card);border-radius:6px;padding:6px 8px;cursor:pointer;color:var(--t2);line-height:1}
.navbar-toggler svg{width:16px;height:16px;display:block}
.navbar-collapse{flex:1;display:flex;justify-content:flex-end}
.navbar-nav{display:flex;align-items:center;gap:.4rem;list-style:none;flex-wrap:wrap}
.navbar-nav a{color:var(--t2);font-weight:500;font-size:.88rem;padding:.5rem .9rem;transition:.2s;position:relative;text-decoration:none;display:inline-flex;align-items:center;gap:5px;white-space:nowrap}
.navbar-nav a svg{width:13px;height:13px}
.navbar-nav a:hover,.navbar-nav a.active{color:var(--gold)}
.navbar-nav a::after{content:'';position:absolute;bottom:0;left:50%;width:0;height:2px;background:var(--gold);transition:.3s;transform:translateX(-50%)}
.navbar-nav a:hover::after,.navbar-nav a.active::after{width:60%}
@media(max-width:820px){
  .navbar-toggler{display:block}
  .navbar-collapse{position:fixed;top:0;right:0;bottom:0;width:min(280px,80vw);background:var(--card);border-left:1px solid var(--bd);box-shadow:-8px 0 32px rgba(26,26,46,.12);flex-direction:column;justify-content:flex-start;align-items:stretch;padding:70px 20px 20px;transform:translateX(105%);transition:transform .3s ease;z-index:1040}
  .navbar-collapse.open{transform:translateX(0)}
  .navbar-nav{flex-direction:column;align-items:stretch;gap:.2rem}
  .navbar-nav a{padding:.8rem .6rem;font-size:.95rem;border-bottom:1px solid var(--bd-l);border-radius:6px}
  .navbar-nav a::after{display:none}
  .navbar-nav a:hover{background:var(--gold-bg)}
}
.nav-backdrop{position:fixed;inset:0;background:rgba(26,26,46,.4);opacity:0;pointer-events:none;transition:.3s;z-index:1035}
.nav-backdrop.show{opacity:1;pointer-events:auto}

/* ---------- Hero ---------- */
.hero{padding:calc(var(--nav-h) + 55px) 0 55px;position:relative;overflow:hidden;background:linear-gradient(180deg,#fff 0%,var(--bg) 100%)}
.hero::before{content:'';position:absolute;top:-60px;right:-80px;width:350px;height:350px;background:radial-gradient(circle,rgba(183,121,31,.08) 0%,transparent 70%);border-radius:50%;pointer-events:none}
.hero::after{content:'';position:absolute;bottom:-40px;left:-60px;width:280px;height:280px;background:radial-gradient(circle,rgba(9,132,227,.06) 0%,transparent 70%);border-radius:50%;pointer-events:none}
.hero h1{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:900;line-height:1.2;margin-bottom:.5rem;color:var(--t1);position:relative}
.hero .sub{color:var(--t2);font-size:clamp(.9rem,1.8vw,1.05rem);font-weight:300;max-width:520px;position:relative}
.hero .badge-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:1.2rem;position:relative}
.hero .v-tag{font-size:.72rem;font-weight:600;padding:5px 14px;border-radius:50px;border:1px solid var(--bd);color:var(--t2);display:flex;align-items:center;gap:5px;transition:.3s;background:var(--card)}
.hero .v-tag:hover{border-color:var(--gold);color:var(--gold);box-shadow:0 2px 8px rgba(183,121,31,.12)}
.hero .v-tag svg{width:.85rem;height:.85rem;flex-shrink:0}

/* ---------- 通用标题 ---------- */
.sp{padding:70px 0}
.sl{display:inline-flex;align-items:center;gap:8px;color:var(--gold);font-size:.75rem;font-weight:700;letter-spacing:3px;text-transform:uppercase;margin-bottom:.8rem}
.sl::before{content:'';width:20px;height:2px;background:var(--gold)}
.st{font-size:clamp(1.5rem,3vw,2.2rem);font-weight:900;margin-bottom:.5rem;line-height:1.2;color:var(--t1)}
.sd{color:var(--t2);font-size:.92rem;max-width:540px;font-weight:300}
.sdv{width:45px;height:3px;background:linear-gradient(90deg,var(--gold),var(--cyan));border-radius:2px;margin:1rem 0}

/* ---------- 三栏版本列表 ---------- */
.versions-grid-bs{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem;margin-top:1.5rem}
.versions-col-bs{display:flex;flex-direction:column;gap:1rem}
.versions-col__title-bs{font-size:1.1rem;font-weight:800;color:var(--t1);padding-bottom:.5rem;border-bottom:2px solid var(--bd);display:flex;justify-content:space-between;align-items:center;margin-bottom:.5rem;gap:.5rem}
.versions-col__title-bs span{font-size:.75rem;color:var(--t3);font-weight:400;white-space:nowrap}
.version-card-bs{display:flex;gap:1rem;padding:1.2rem;background:var(--card);border:1px solid var(--bd);border-radius:12px;box-shadow:var(--shadow);transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease}
.version-card-bs:hover{transform:translateY(-3px);box-shadow:var(--shadow-h);border-color:var(--gold)}
.version-card-bs .cover{width:80px;height:100px;border-radius:8px;overflow:hidden;flex-shrink:0;position:relative;background:var(--bg)}
.version-card-bs .cover img{width:100%;height:100%;object-fit:cover;display:block}
.version-card-bs .lv{position:absolute;top:0;left:0;background:var(--gold);color:#fff;font-size:.65rem;font-weight:700;padding:2px 6px;border-bottom-right-radius:6px;font-family:var(--f)}
.version-card-bs .body{flex:1;display:flex;flex-direction:column;min-width:0}
.version-card-bs .row1{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:.25rem;border-bottom:1px solid var(--bd-l);padding-bottom:.25rem;gap:.5rem}
.version-card-bs .title{font-size:.95rem;font-weight:700;color:var(--t1)}
.version-card-bs .score{font-size:.9rem;font-weight:700;color:var(--red);flex-shrink:0}
.version-card-bs .row2{display:flex;justify-content:space-between;align-items:center;font-size:.75rem;color:var(--t3);margin-bottom:.5rem;gap:.5rem;flex-wrap:wrap}
.version-card-bs .players b{color:var(--green)}
.version-card-bs .status-bs{display:inline-flex;align-items:center;gap:.3rem;padding:2px 8px;border-radius:50px;font-size:.65rem;font-weight:600;white-space:nowrap}
.version-card-bs .status-bs::before{content:'';width:6px;height:6px;border-radius:50%;background:currentColor;animation:statusBreathe 3s ease-in-out infinite}
.version-card-bs .status--stable{background:var(--green-bg);color:var(--green)}
.version-card-bs .status--hot{background:var(--red-bg);color:var(--red)}
.version-card-bs .status--hot::before{animation-delay:.5s}
.version-card-bs .status--rec{background:var(--cyan-bg);color:var(--cyan)}
.version-card-bs .status--rec::before{animation-delay:1s}
@keyframes statusBreathe{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.3;transform:scale(.8)}}
.version-card-bs .desc{font-size:.75rem;color:var(--t2);line-height:1.5;margin-bottom:.5rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.version-card-bs .tags{display:flex;gap:.3rem;flex-wrap:wrap;margin-bottom:.5rem}
.version-card-bs .tag{font-size:.65rem;font-weight:600;padding:2px 6px;border-radius:4px;color:var(--t2);background:var(--bg);border:1px solid var(--bd-l);white-space:nowrap}
.version-card-bs .actions{display:flex;gap:.4rem;margin-top:auto}
.version-card-bs .btn-v{flex:1;text-align:center;padding:.45rem .5rem;border-radius:6px;font-size:.75rem;font-weight:600;text-decoration:none;transition:.2s;display:inline-flex;align-items:center;justify-content:center;gap:4px;white-space:nowrap}
.version-card-bs .btn-v svg{width:12px;height:12px}
.version-card-bs .btn-dl-v{background:var(--gold);color:#fff}
.version-card-bs .btn-dl-v:hover{background:var(--gold-l);color:#fff}
.version-card-bs .btn-qq-v{background:var(--bg);color:var(--t2);border:1px solid var(--bd)}
.version-card-bs .btn-qq-v:hover{background:var(--cyan-bg);color:var(--cyan);border-color:var(--cyan)}
.version-card-bs.placeholder{justify-content:center;align-items:center;min-height:150px;border:1px dashed var(--bd);background:transparent;box-shadow:none}
.version-card-bs.placeholder:hover{transform:none;box-shadow:none;border-color:var(--bd)}
.version-card-bs.placeholder p{font-size:.85rem;color:var(--t3);opacity:.6}
@media(max-width:992px){.versions-grid-bs{grid-template-columns:1fr 1fr}}
@media(max-width:768px){.versions-grid-bs{grid-template-columns:1fr}}

/* ---------- 公告 ---------- */
.notice{background:var(--card);border:1px solid var(--bd);border-radius:var(--r);padding:1.2rem 1.5rem;display:flex;gap:12px;align-items:flex-start;box-shadow:var(--shadow)}
.notice>i{color:var(--gold);font-size:1.1rem;margin-top:3px;flex-shrink:0;line-height:1}
.notice>i svg{width:1.05rem;height:1.05rem;display:block}
.notice p{font-size:.83rem;color:var(--t2);line-height:1.7;margin:0}
.notice strong{color:var(--t1)}
.notice-cyan{border-color:rgba(9,132,227,.2)}
.notice-cyan>i{color:var(--cyan)}

/* ---------- 安装步骤 ---------- */
.step{display:flex;gap:1rem;align-items:flex-start;padding:1.2rem 0}
.step-num{width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.85rem;font-weight:800;background:var(--gold-bg);color:var(--gold);border:1.5px solid rgba(183,121,31,.2);flex-shrink:0}
.step h4{font-size:.95rem;font-weight:700;margin-bottom:.2rem;color:var(--t1)}
.step p{font-size:.83rem;color:var(--t2);line-height:1.7;margin:0}
.step:not(:last-child){border-bottom:1px solid var(--bd-l);padding-bottom:1.2rem}

/* ---------- 特性卡片 ---------- */
.cd{background:var(--card);border:1px solid var(--bd);border-radius:var(--r);padding:1.5rem;transition:transform .4s,box-shadow .4s;box-shadow:var(--shadow);height:100%;display:flex;flex-direction:column}
.cd:hover{transform:translateY(-4px);box-shadow:var(--shadow-h)}
.cd .ci{width:46px;height:46px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:1.2rem;margin-bottom:.8rem;flex-shrink:0}
.cd .ci svg{width:20px;height:20px}
.cd .ci.gold{background:var(--gold-bg);color:var(--gold)}
.cd .ci.cyan{background:var(--cyan-bg);color:var(--cyan)}
.cd .ci.red{background:var(--red-bg);color:var(--red)}
.cd .ci.green{background:var(--green-bg);color:var(--green)}
.cd h4{font-size:.95rem;font-weight:700;margin-bottom:.4rem;color:var(--t1)}
.cd p{color:var(--t2);font-size:.83rem;line-height:1.6;margin:0}
.cd .cd-link{margin-top:.8rem;align-self:flex-start;display:inline-flex;align-items:center;gap:5px;background:var(--gold);color:#fff;text-decoration:none;font-size:.8rem;font-weight:600;padding:8px 16px;border-radius:6px;transition:.2s}
.cd .cd-link:hover{background:var(--gold-l)}
.cd .cd-link svg{width:13px;height:13px}

/* ---------- FAQ 手风琴 ---------- */
.acc .accordion-item{background:var(--card);border:1px solid var(--bd);border-radius:var(--r);margin-bottom:8px;overflow:hidden;box-shadow:var(--shadow)}
.acc .accordion-button{background:transparent;color:var(--t1);font-weight:600;font-size:.9rem;padding:.9rem 1.2rem;border:none;width:100%;text-align:left;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:10px;font-family:var(--f);transition:.2s;position:relative}
.acc .accordion-button::after{content:'';flex-shrink:0;width:9px;height:9px;border-right:2px solid var(--t3);border-bottom:2px solid var(--t3);transform:rotate(45deg);transition:transform .3s;margin-top:-3px}
.acc .accordion-button:not(.collapsed){background:var(--gold-bg);color:var(--gold)}
.acc .accordion-button:not(.collapsed)::after{transform:rotate(-135deg);margin-top:3px}
.acc .accordion-body{color:var(--t2);font-size:.85rem;line-height:1.8;padding:0 1.2rem .9rem}
.acc .accordion-body:empty{display:none}
.faq-contact{color:var(--t3);font-size:.8rem;margin-top:.8rem}
.faq-contact a{color:var(--gold);text-decoration:none;font-weight:600}

/* ---------- Footer ---------- */
.ft{background:#dce0e8;border-top:1px solid var(--bd);padding:45px 0 22px}
.ft .ft-cols{flex:1;min-width:0}
.ft h6{color:var(--t1);font-weight:700;font-size:.85rem;margin-bottom:.8rem;position:relative;padding-bottom:7px}
.ft h6::after{content:'';position:absolute;bottom:0;left:0;width:22px;height:2px;background:var(--gold)}
.ft .fl{list-style:none;padding:0;margin:0}
.ft .fl li{margin-bottom:6px}
.ft .fl a{color:var(--t3);text-decoration:none;font-size:.8rem;transition:.2s}
.ft .fl a:hover{color:var(--gold)}
.ft-brand{display:flex;align-items:center;gap:8px;margin-bottom:.7rem}
.ft-brand-ico{width:28px;height:28px;background:linear-gradient(135deg,var(--gold-l),var(--gold));border-radius:5px;display:flex;align-items:center;justify-content:center;font-size:12px;color:#fff;flex-shrink:0}
.ft-brand-ico svg{width:12px;height:12px}
.ft-brand span{font-weight:900;color:var(--gold);font-size:.95rem}
.ft-desc{color:var(--t3);font-size:.78rem;line-height:1.6;max-width:280px}
.ft-cols{flex:1 1 auto;min-width:0;margin:0 -12px;display:flex;flex-wrap:wrap;row-gap:16px}
.ft-cols .ft-col{flex:0 0 50%;max-width:50%;padding:0 12px;min-width:0}
@media(min-width:992px){.ft-cols .ft-col{flex:0 0 25%;max-width:25%}}
.ft-b{border-top:1px solid var(--bd);padding-top:1rem;margin-top:1.8rem;text-align:center}
.ft-b p{color:var(--t3);font-size:.74rem;margin-bottom:.15rem}
.ft-b .cr{color:var(--t3);font-size:.68rem;opacity:.7}
@media(max-width:768px){.sp{padding:45px 0}.hero{padding:calc(var(--nav-h) + 40px) 0 35px}.ft{padding:30px 0 15px}}

/* ---------- Toast ---------- */
.toast-t{position:fixed;bottom:20px;right:20px;background:var(--card);border:1px solid rgba(183,121,31,.25);border-radius:var(--r);padding:12px 20px;color:var(--t1);font-size:.8rem;z-index:10000;box-shadow:0 8px 30px rgba(26,26,46,.12);display:flex;align-items:center;gap:8px;transform:translateY(80px);opacity:0;transition:.4s;max-width:calc(100vw - 40px)}
.toast-t.show{transform:translateY(0);opacity:1}
.toast-t svg{width:1rem;height:1rem;flex-shrink:0}
.tg{color:var(--gold)}
.tr{color:var(--red)}
.tc2{color:var(--cyan)}

/* ---------- 滚动渐入 ---------- */
.rv{opacity:0;transform:translateY(20px);transition:opacity .6s,transform .6s}
.rv.v{opacity:1;transform:translateY(0)}

@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important}
  .rv{opacity:1;transform:none}
}
::selection{background:var(--gold);color:#fff}
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:#c3c9d4;border-radius:4px}
::-webkit-scrollbar-thumb:hover{background:var(--gold)}

/* ===== 版本卡片结构统一：三列等高 / 描述固定两行 / 按钮贴底 ===== */
.versions-grid-bs{align-items:stretch}
.versions-col-bs{display:flex;flex-direction:column}
.versions-col-bs .version-card-bs{flex:1 1 auto}
.version-card-bs .desc{min-height:3em}
.version-card-bs .tags{min-height:1.25rem;align-content:flex-start}
.version-card-bs .actions{margin-top:auto}