/* 拾幕工坊官网 · 深空·鎏金 */
:root {
  --bg: #05070e;
  --panel: rgba(20, 26, 44, 0.72);
  --panel-solid: #131a2c;
  --line: rgba(90, 110, 160, 0.18);
  --line2: rgba(120, 140, 190, 0.28);
  --text: #e9edf6;
  --muted: #97a2bd;
  --muted2: #6b7690;
  --gold: #e9b455;
  --gold2: #f2cd82;
  --deep: #c58f35;
  --grad-gold: linear-gradient(120deg, #f4d488 0%, #e9b455 45%, #c58f35 100%);
  --r: 16px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  background: var(--bg); color: var(--text);
  font-size: 15px; line-height: 1.75;
  -webkit-font-smoothing: antialiased; overflow-x: hidden;
}
/* 极光 + 星点背景 */
body::before {
  content: ""; position: fixed; inset: 0; z-index: -2;
  background:
    radial-gradient(900px 480px at 78% -8%, rgba(64, 105, 190, 0.16), transparent 60%),
    radial-gradient(760px 420px at 12% 4%, rgba(150, 84, 190, 0.11), transparent 60%),
    radial-gradient(1000px 600px at 50% 110%, rgba(233, 180, 85, 0.07), transparent 60%);
}
body::after {
  content: ""; position: fixed; inset: 0; z-index: -1; opacity: 0.5;
  background-image:
    radial-gradient(1px 1px at 22% 31%, #ffffff80 50%, transparent 51%),
    radial-gradient(1px 1px at 71% 12%, #ffffff60 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 88% 46%, #f2cd8240 50%, transparent 51%),
    radial-gradient(1px 1px at 38% 72%, #ffffff50 50%, transparent 51%),
    radial-gradient(1px 1px at 58% 88%, #ffffff40 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 8% 58%, #ffffff55 50%, transparent 51%),
    radial-gradient(1px 1px at 94% 80%, #f2cd8230 50%, transparent 51%);
  background-size: 100% 100%;
}
a { color: inherit; text-decoration: none; }
.gold {
  background: var(--grad-gold);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}

/* ===== 导航 ===== */
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(16px) saturate(140%);
  background: rgba(6, 9, 17, 0.78);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  max-width: 1120px; margin: 0 auto; padding: 14px 24px;
  display: flex; align-items: center; gap: 28px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 17px; }
.brand img { width: 30px; height: 30px; border-radius: 8px; }
.brand em { font-style: normal; font-size: 11.5px; color: var(--muted2); font-weight: 500; letter-spacing: 0.4px; }
.links { display: flex; gap: 6px; flex: 1; }
.links a {
  padding: 7px 14px; border-radius: 9px; font-size: 14px; color: var(--muted);
  transition: color 0.18s, background 0.18s;
}
.links a:hover { color: var(--gold2); background: rgba(233, 180, 85, 0.08); }
.nav-cta {
  padding: 8px 20px; border-radius: 10px; font-size: 13.5px; font-weight: 700;
  background: var(--grad-gold); color: #241704;
  box-shadow: 0 4px 18px rgba(233, 180, 85, 0.25);
  transition: filter 0.18s, transform 0.18s;
}
.nav-cta:hover { filter: brightness(1.08); transform: translateY(-1px); }

/* ===== 首屏 ===== */
.hero { position: relative; text-align: center; padding: 96px 24px 84px; }
.hero-inner { max-width: 820px; margin: 0 auto; position: relative; z-index: 1; }
.pill {
  display: inline-block; padding: 6px 18px; border-radius: 99px;
  font-size: 13px; color: var(--gold2);
  border: 1px solid rgba(233, 180, 85, 0.35);
  background: rgba(233, 180, 85, 0.08);
  margin-bottom: 26px; letter-spacing: 0.5px;
}
.hero h1 {
  font-size: clamp(40px, 6.4vw, 64px); line-height: 1.18; font-weight: 800;
  letter-spacing: 2px; margin-bottom: 22px;
}
.hero .sub { color: var(--muted); font-size: 16.5px; margin-bottom: 36px; }
.cta-row { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-bottom: 18px; }
.btn-gold, .btn-ghost {
  display: inline-flex; align-items: center; gap: 9px;
  border-radius: 12px; font-weight: 700; letter-spacing: 0.5px;
  transition: filter 0.18s, transform 0.18s, border-color 0.18s;
}
.btn-gold {
  background: var(--grad-gold); color: #241704;
  padding: 13px 30px; font-size: 16px;
  box-shadow: 0 6px 26px rgba(233, 180, 85, 0.28), inset 0 1px 0 #ffffff55;
}
.btn-gold:hover { filter: brightness(1.08); transform: translateY(-2px); }
.btn-ghost {
  border: 1px solid var(--line2); color: var(--muted);
  padding: 13px 28px; font-size: 15px; background: rgba(255,255,255,0.02);
}
.btn-ghost:hover { color: var(--text); border-color: var(--gold); }
.btn-gold.big { padding: 14px 34px; }
.cta-meta { font-size: 12.5px; font-weight: 500; opacity: 0.75; margin-left: 4px; }
.hero-note { font-size: 12.5px; color: var(--muted2); letter-spacing: 1px; }
.hero-glow { position: absolute; border-radius: 50%; filter: blur(90px); pointer-events: none; }
.hero-glow.g1 { width: 420px; height: 420px; left: -120px; top: 8%; background: rgba(64, 105, 190, 0.14); }
.hero-glow.g2 { width: 380px; height: 380px; right: -100px; bottom: 0; background: rgba(233, 180, 85, 0.10); }

/* ===== 数据条 ===== */
.stats { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  background: rgba(13, 18, 32, 0.5); }
.stats-inner {
  max-width: 1120px; margin: 0 auto; padding: 30px 24px;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center;
}
.stat b { font-size: 34px; font-weight: 800;
  background: var(--grad-gold); -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; }
.stat b i { font-style: normal; font-size: 15px; margin-left: 2px; }
.stat span { display: block; font-size: 13px; color: var(--muted); margin-top: 2px; }

/* ===== 通用区块 ===== */
.section { max-width: 1120px; margin: 0 auto; padding: 88px 24px 8px; }
.sec-head { text-align: center; margin-bottom: 46px; }
.sec-head h2 {
  font-size: 32px; font-weight: 800; letter-spacing: 3px; margin-bottom: 10px;
  background: var(--grad-gold);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.sec-head p { color: var(--muted); font-size: 15px; }

/* ===== 功能卡 ===== */
.feat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.feat {
  position: relative; border-radius: var(--r); padding: 26px 24px;
  background: var(--panel); border: 1px solid var(--line);
  backdrop-filter: blur(14px) saturate(130%);
  transition: transform 0.22s, border-color 0.22s, box-shadow 0.22s;
  overflow: hidden;
}
.feat::after {
  content: ""; position: absolute; inset: 0; border-radius: var(--r); pointer-events: none;
  background: radial-gradient(320px 160px at 85% -10%, rgba(233,180,85,0.08), transparent 60%);
  opacity: 0; transition: opacity 0.25s;
}
.feat:hover { transform: translateY(-4px); border-color: rgba(233, 180, 85, 0.4);
  box-shadow: 0 14px 44px rgba(0, 0, 0, 0.45); }
.feat:hover::after { opacity: 1; }
.feat-ico {
  width: 46px; height: 46px; border-radius: 12px; margin-bottom: 16px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(233, 180, 85, 0.10); color: var(--gold2);
  border: 1px solid rgba(233, 180, 85, 0.25);
}
.feat-ico svg { width: 24px; height: 24px; }
.feat h3 { font-size: 17.5px; margin-bottom: 10px; letter-spacing: 0.5px; }
.feat p { font-size: 13.8px; color: var(--muted); }
.tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 14px; }
.tags span {
  font-size: 11.5px; padding: 3px 11px; border-radius: 99px;
  border: 1px solid var(--line2); color: var(--muted2);
}

/* ===== 版本时间线 ===== */
.timeline { position: relative; max-width: 780px; margin: 0 auto; padding-left: 26px; }
.timeline::before {
  content: ""; position: absolute; left: 5px; top: 6px; bottom: 6px; width: 2px;
  background: linear-gradient(180deg, rgba(233,180,85,0.55), rgba(233,180,85,0.08));
}
.tl-item { position: relative; padding: 0 0 34px 22px; }
.tl-item::before {
  content: ""; position: absolute; left: -26px; top: 7px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--grad-gold); box-shadow: 0 0 0 4px rgba(233,180,85,0.15);
}
.tl-item.latest::before { animation: breathe 2.2s ease-in-out infinite; }
@keyframes breathe { 0%,100% { box-shadow: 0 0 0 4px rgba(233,180,85,0.15); } 50% { box-shadow: 0 0 0 8px rgba(233,180,85,0.07); } }
.tl-head { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 8px; }
.tl-ver {
  font-size: 17px; font-weight: 800; letter-spacing: 0.5px;
  background: var(--grad-gold); -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.tl-date { font-size: 12.5px; color: var(--muted2); }
.tl-badge {
  font-size: 11px; font-weight: 700; padding: 2px 10px; border-radius: 99px;
  background: rgba(233,180,85,0.14); color: var(--gold2);
  border: 1px solid rgba(233,180,85,0.35);
}
.tl-title { font-size: 14.5px; color: var(--text); margin-bottom: 6px; font-weight: 600; }
.tl-body { font-size: 13.5px; color: var(--muted); white-space: pre-wrap; }
.tl-loading { text-align: center; color: var(--muted2); padding: 30px 0; font-size: 14px; }

/* ===== 下载区 ===== */
.dl-card {
  display: grid; grid-template-columns: 1.35fr 1fr; gap: 20px;
}
.dl-main {
  border-radius: var(--r); padding: 32px 30px;
  background: var(--panel); border: 1px solid rgba(233, 180, 85, 0.25);
  backdrop-filter: blur(14px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.4), inset 0 1px 0 rgba(255,255,255,0.05);
}
.dl-title { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 20px; }
.dl-title h3 { font-size: 21px; }
.dl-badges { display: flex; gap: 8px; flex-wrap: wrap; }
.dl-badges span {
  font-size: 11.5px; padding: 3px 11px; border-radius: 99px;
  border: 1px solid rgba(74, 222, 128, 0.35); color: #4ade80; background: rgba(74, 222, 128, 0.07);
}
.dl-badges span.goldb { border-color: rgba(233,180,85,0.4); color: var(--gold2); background: rgba(233,180,85,0.08); }
.dl-meta { list-style: none; margin-bottom: 16px; }
.dl-meta li {
  display: flex; justify-content: space-between; padding: 9px 2px;
  border-bottom: 1px dashed var(--line); font-size: 14px;
}
.dl-meta span { color: var(--muted); }
.dl-md5 { margin: 4px 0 22px; }
.dl-md5 span { display: block; font-size: 12px; color: var(--muted2); margin-bottom: 5px; }
.dl-md5 code {
  display: block; font-family: Consolas, monospace; font-size: 12.5px;
  color: var(--gold2); background: rgba(0,0,0,0.35);
  border: 1px solid var(--line); border-radius: 9px; padding: 9px 13px;
  word-break: break-all;
}
#btn-dl { width: 100%; justify-content: center; }
.dl-note { font-size: 12.5px; color: var(--muted2); margin-top: 13px; text-align: center; }
.dl-history {
  border-radius: var(--r); padding: 24px 22px;
  background: var(--panel); border: 1px solid var(--line); backdrop-filter: blur(14px);
}
.dl-history h4 { font-size: 15px; margin-bottom: 14px; letter-spacing: 1px; }
.dlh-list { display: flex; flex-direction: column; gap: 9px; max-height: 420px; overflow-y: auto; }
.dlh-item {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: 11px 13px; border-radius: 11px;
  background: rgba(255,255,255,0.025); border: 1px solid var(--line);
  font-size: 13px;
}
.dlh-item b { font-weight: 700; }
.dlh-item .dlh-date { color: var(--muted2); font-size: 12px; }
.dlh-item a {
  flex-shrink: 0; font-size: 12.5px; color: var(--gold2);
  border: 1px solid rgba(233,180,85,0.35); padding: 4px 13px; border-radius: 8px;
}
.dlh-item a:hover { background: rgba(233,180,85,0.1); }
.dlh-item .nofile { flex-shrink: 0; font-size: 12px; color: var(--muted2); }

/* ===== FAQ ===== */
.faq-list { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-list details {
  border-radius: 13px; border: 1px solid var(--line);
  background: var(--panel); backdrop-filter: blur(12px);
  padding: 0 20px; transition: border-color 0.2s;
}
.faq-list details[open] { border-color: rgba(233,180,85,0.35); }
.faq-list summary {
  cursor: pointer; padding: 16px 0; font-weight: 600; font-size: 15px;
  list-style: none; position: relative; padding-right: 30px;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: "+"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%);
  font-size: 19px; color: var(--gold); font-weight: 400; transition: transform 0.2s;
}
.faq-list details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq-list p { padding: 0 0 17px; color: var(--muted); font-size: 13.8px; }

/* ===== 页脚 ===== */
.footer { margin-top: 96px; border-top: 1px solid var(--line);
  background: rgba(8, 11, 20, 0.85); }
.footer-inner {
  max-width: 1120px; margin: 0 auto; padding: 40px 24px 34px;
  display: flex; align-items: center; justify-content: space-between; gap: 26px; flex-wrap: wrap;
}
.f-brand { display: flex; align-items: center; gap: 12px; }
.f-brand img { width: 38px; height: 38px; border-radius: 10px; }
.f-brand b { display: block; font-size: 15.5px; }
.f-brand em { font-style: normal; font-size: 11px; color: var(--muted2); margin-left: 6px; }
.f-brand span { display: block; font-size: 12px; color: var(--muted2); }
.f-links { display: flex; gap: 22px; }
.f-links a { font-size: 13px; color: var(--muted); }
.f-links a:hover { color: var(--gold2); }
.f-copy p { font-size: 12px; color: var(--muted2); text-align: right; line-height: 1.9; }

/* ===== 移动端菜单（默认隐藏，≤860px 出现） ===== */
.menu-btn {
  display: none; flex-direction: column; justify-content: center; gap: 5px;
  width: 40px; height: 40px; padding: 0 7px;
  background: transparent; border: 1px solid var(--line2); border-radius: 10px;
  cursor: pointer;
}
.menu-btn span {
  display: block; height: 2px; border-radius: 2px;
  background: var(--gold2); transition: transform 0.22s, opacity 0.22s;
}
.menu-btn.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-btn.open span:nth-child(2) { opacity: 0; }
.menu-btn.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.m-menu {
  display: none; flex-direction: column; padding: 6px 18px 14px;
  border-top: 1px solid var(--line);
}
.m-menu a {
  padding: 13px 14px; border-radius: 10px; font-size: 15px; color: var(--muted);
}
.m-menu a:active, .m-menu a:hover { color: var(--gold2); background: rgba(233, 180, 85, 0.08); }
.m-menu .m-menu-dl {
  margin-top: 6px; text-align: center; font-weight: 700; color: #241704;
  background: var(--grad-gold);
}

/* ===== 客服悬浮按钮 + 弹窗 ===== */
.kefu-fab {
  position: fixed; right: 22px; bottom: 26px; z-index: 60;
  display: flex; align-items: center; gap: 8px;
  padding: 12px 20px; border: none; border-radius: 99px; cursor: pointer;
  background: var(--grad-gold); color: #241704;
  font-family: inherit; font-size: 14px; font-weight: 700; letter-spacing: 0.5px;
  box-shadow: 0 8px 30px rgba(233, 180, 85, 0.35), inset 0 1px 0 #ffffff55;
  transition: filter 0.18s, transform 0.18s;
}
.kefu-fab:hover { filter: brightness(1.08); transform: translateY(-2px); }
.kefu-fab svg { width: 19px; height: 19px; }
.kefu-mask {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(3, 5, 10, 0.72); backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: center; padding: 20px;
}
.kefu-modal {
  position: relative; width: 360px; max-width: 94vw; max-height: 86vh; overflow-y: auto;
  border-radius: 18px; padding: 26px 24px 24px; text-align: center;
  background: linear-gradient(160deg, #1a2236, #10152a);
  border: 1px solid rgba(233, 180, 85, 0.3);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.6);
  animation: kefuIn 0.22s ease-out;
}
@keyframes kefuIn { from { transform: translateY(14px) scale(0.97); opacity: 0; } }
.kefu-modal h3 {
  font-size: 18px; margin-bottom: 18px; letter-spacing: 1px;
  background: var(--grad-gold);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.kefu-close {
  position: absolute; right: 12px; top: 10px;
  width: 32px; height: 32px; border: none; border-radius: 50%;
  background: transparent; color: var(--muted); font-size: 22px; line-height: 1;
  cursor: pointer; transition: color 0.15s, background 0.15s;
}
.kefu-close:hover { color: var(--text); background: rgba(255, 255, 255, 0.06); }
.kefu-qr { width: 210px; max-width: 76%; border-radius: 14px; margin: 2px auto 10px;
  display: block; background: #fff; padding: 8px; }
.kefu-tip { font-size: 12.5px; color: var(--muted); margin-bottom: 6px; }
.kefu-wxid {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  margin: 12px 0; padding: 11px 14px; border-radius: 11px;
  background: rgba(0, 0, 0, 0.32); border: 1px solid var(--line);
}
.kefu-wxid code { font-family: Consolas, monospace; font-size: 14.5px; color: var(--gold2); word-break: break-all; }
.kefu-copy {
  flex-shrink: 0; padding: 7px 15px; border-radius: 9px; cursor: pointer;
  border: 1px solid rgba(233, 180, 85, 0.4); color: var(--gold2);
  background: rgba(233, 180, 85, 0.08); font-family: inherit; font-size: 12.5px;
}
.kefu-copy:hover { background: rgba(233, 180, 85, 0.16); }
.kefu-link {
  display: block; margin: 14px 0 4px; padding: 13px 18px; border-radius: 12px;
  background: var(--grad-gold); color: #241704; font-size: 15px; font-weight: 700;
  text-decoration: none; box-shadow: 0 6px 22px rgba(233, 180, 85, 0.3);
}
.kefu-link:hover { filter: brightness(1.07); }
.kefu-note { font-size: 12.5px; color: var(--muted2); margin-top: 10px; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .feat-grid { gap: 16px; }
  .stats-inner { grid-template-columns: repeat(4, 1fr); }
}

/* 平板 */
@media (max-width: 900px) {
  .feat-grid { grid-template-columns: 1fr 1fr; }
  .dl-card { grid-template-columns: 1fr; }
  .section { padding: 64px 20px 8px; }
  .hero { padding: 72px 20px 64px; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}

/* 大屏手机 / 小平板：出现汉堡菜单 */
@media (max-width: 860px) {
  .links, .nav-cta { display: none; }
  .menu-btn { display: flex; }
  .nav.open .m-menu { display: flex; }
  .nav-inner { gap: 14px; }
  .hero h1 { letter-spacing: 1px; }
  .stats-inner { grid-template-columns: 1fr 1fr; gap: 22px; padding: 24px 16px; }
  .stat b { font-size: 28px; }
}

/* 手机 */
@media (max-width: 620px) {
  body { font-size: 14.5px; }
  .section { padding: 52px 16px 4px; }
  .sec-head { margin-bottom: 32px; }
  .sec-head h2 { font-size: 25px; }
  .hero { padding: 52px 16px 46px; }
  .hero h1 { font-size: 34px; }
  .hero .sub { font-size: 14.5px; }
  .hero .sub br { display: none; }
  .nav-inner { padding: 12px 16px; }
  .pill { font-size: 12px; padding: 5px 14px; margin-bottom: 20px; }
  .feat-grid { grid-template-columns: 1fr; }
  .feat { padding: 22px 18px; }
  .feat p { font-size: 13.2px; }
  /* CTA 与下载按钮全宽 */
  .cta-row { flex-direction: column; align-items: stretch; }
  .btn-gold.big, .btn-ghost.big { width: 100%; justify-content: center; padding: 13px 20px; }
  /* 下载卡内边距收紧 */
  .dl-main { padding: 24px 18px; }
  .dl-title { flex-direction: column; align-items: flex-start; gap: 8px; }
  .dl-meta li { font-size: 13px; padding: 8px 0; }
  /* 时间线左移收窄 */
  .timeline { padding-left: 18px; max-width: 100%; }
  .timeline::before { left: 3px; }
  .tl-item { padding-left: 16px; }
  .tl-item::before { left: -18px; width: 10px; height: 10px; }
  .tl-body { font-size: 12.8px; }
  .tl-head { gap: 8px; }
  .tl-ver { font-size: 15.5px; }
  .dlh-list { max-height: none; }
  .faq-list summary { font-size: 14px; }
  .faq-list p { font-size: 13px; }
  /* 页脚纵向堆叠 */
  .footer-inner { padding: 30px 16px 26px; gap: 18px; }
  .f-links { flex-wrap: wrap; gap: 14px; }
  .f-copy p { text-align: left; }
  /* 极光光斑缩小避免溢出 */
  .hero-glow.g1 { width: 260px; height: 260px; }
  .hero-glow.g2 { width: 220px; height: 220px; }
}

/* 小屏手机 */
@media (max-width: 400px) {
  .hero h1 { font-size: 30px; }
  .stats-inner { grid-template-columns: 1fr 1fr; gap: 16px; }
  .stat b { font-size: 24px; }
  .brand em { display: none; }
}

  /* 客服按钮手机适配 */
  .kefu-fab { right: 14px; bottom: 16px; padding: 11px 17px; font-size: 13.5px; }
  .kefu-fab svg { width: 17px; height: 17px; }
  .kefu-modal { padding: 22px 18px 20px; }
  .kefu-qr { width: 180px; }

/* 触屏 hover 降级（避免移动端卡死悬停态） */
@media (hover: none) {
  .feat:hover { transform: none; box-shadow: none; }
  .feat { border-color: var(--line); }
  .btn-gold:hover, .nav-cta:hover { transform: none; }
}