/* =====================================================================
   欧易下载 · 全站样式
   暖橙设计体系 / 终端风格下载面板 / 右侧抽屉 / 下划线页签 / 手风琴
===================================================================== */

/* ---------- 设计令牌 ---------- */
:root {
  --bg: #120b06;
  --bg-soft: #170f08;
  --panel: #1c130a;
  --panel-2: #241809;
  --line: rgba(255, 178, 110, .13);
  --line-2: rgba(255, 178, 110, .32);
  --text: #f7ead9;
  --text-2: #b39a7e;
  --text-3: #7a6448;
  --brand: #ff8c2e;
  --brand-2: #ffb066;
  --brand-soft: rgba(255, 140, 46, .13);
  --up: #3ddc84;
  --down: #ff5d5d;
  --grad: linear-gradient(135deg, #ff8c2e, #ffb066);
  --radius: 16px;
  --nav-h: 64px;
  --wrap: 1180px;
  --shadow: 0 24px 60px rgba(10, 4, 0, .55);
  --ease: cubic-bezier(.22, .8, .28, 1);
}

/* ---------- 基础 ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; border: none; background: none; color: inherit; cursor: pointer; }
input, textarea { font-family: inherit; }
ul, ol { list-style: none; }
::selection { background: rgba(255, 140, 46, .35); }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 26px; }
.mono { font-family: "SF Mono", "JetBrains Mono", Consolas, monospace; font-variant-numeric: tabular-nums; }
.up { color: var(--up); }
.down { color: var(--down); }
.muted { color: var(--text-2); }

/* ---------- 按钮（方圆角 10px） ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 24px; border-radius: 10px; font-size: 14px; font-weight: 700;
  border: 1px solid transparent; transition: all .22s var(--ease); white-space: nowrap;
}
.btn svg { width: 17px; height: 17px; }
.btn--brand { background: var(--grad); color: #2a1200; }
.btn--brand:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(255, 140, 46, .35); }
.btn--ghost { border-color: var(--line-2); color: var(--text); }
.btn--ghost:hover { border-color: var(--brand); color: var(--brand-2); background: var(--brand-soft); }
.btn--lg { padding: 15px 30px; font-size: 15px; }
.btn--sm { padding: 9px 16px; font-size: 13px; border-radius: 9px; }
.btn.busy { opacity: .8; pointer-events: none; }
.btn.done { background: rgba(61, 220, 132, .15); border-color: rgba(61, 220, 132, .4); color: var(--up); }

/* ---------- 导航（胶囊选中） ---------- */
.navbar {
  position: sticky; top: 0; z-index: 70;
  background: rgba(18, 11, 6, .82);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  transition: box-shadow .3s;
}
.navbar.scrolled { box-shadow: 0 1px 0 var(--line), 0 16px 42px rgba(8, 3, 0, .55); }
.nb-wrap { display: flex; align-items: center; height: var(--nav-h); gap: 22px; }
.logo { display: flex; align-items: center; gap: 9px; flex: none; }
.logo svg { width: 28px; height: 28px; }
.logo b { font-size: 17.5px; font-weight: 800; }
.nb-menu { display: flex; gap: 4px; flex: 1; margin-left: 6px; }
.nb-menu a { padding: 8px 13px; border-radius: 9px; font-size: 14px; color: var(--text-2); transition: all .2s; }
.nb-menu a:hover { color: var(--text); background: rgba(255, 178, 110, .06); }
.nb-menu a.on { color: var(--brand-2); background: var(--brand-soft); }
.nb-right { margin-left: auto; display: flex; gap: 10px; align-items: center; }
.burger {
  display: none; width: 40px; height: 40px; border-radius: 10px;
  border: 1px solid var(--line-2);
  flex-direction: column; gap: 5px; align-items: center; justify-content: center;
}
.burger span { width: 17px; height: 2px; background: var(--text); border-radius: 2px; transition: all .3s var(--ease); }
.burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger.open span:nth-child(2) { opacity: 0; }
.burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 右侧抽屉 ---------- */
.drawer { position: fixed; inset: 0; z-index: 75; pointer-events: none; }
.drawer-mask { position: absolute; inset: 0; background: rgba(8, 3, 0, .62); opacity: 0; transition: opacity .3s; }
.drawer-panel {
  position: absolute; top: 0; right: 0; bottom: 0; width: min(320px, 84vw);
  background: #170f08; border-left: 1px solid var(--line-2);
  padding: 22px 24px; display: flex; flex-direction: column;
  transform: translateX(100%); transition: transform .34s var(--ease);
  overflow-y: auto;
}
.drawer.open { pointer-events: auto; }
.drawer.open .drawer-mask { opacity: 1; }
.drawer.open .drawer-panel { transform: none; }
.drawer-title { font: 12px mono; color: var(--text-3); letter-spacing: .12em; margin-bottom: 8px; }
.drawer-link { display: flex; align-items: center; justify-content: space-between; padding: 15px 4px; font-size: 16.5px; font-weight: 600; border-bottom: 1px dashed var(--line); color: var(--text); }
.drawer-link svg { width: 16px; height: 16px; color: var(--text-3); }
.drawer-link.on { color: var(--brand-2); }
.drawer-foot { margin-top: auto; display: grid; gap: 10px; padding-top: 24px; }
@media (min-width: 921px) { .drawer { display: none; } }

/* ---------- Hero（左文右终端） ---------- */
.dl-hero { position: relative; overflow: hidden; padding: 68px 0 26px; }
.dl-hero::before {
  content: ""; position: absolute; right: -140px; top: -180px;
  width: 680px; height: 560px; border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 140, 46, .2), transparent 62%);
  pointer-events: none;
}
.dh-grid { display: grid; grid-template-columns: 1.02fr 1fr; gap: 54px; align-items: center; position: relative; }
.dh-eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  font: 12.5px mono; color: var(--brand-2);
  background: var(--brand-soft); border: 1px solid var(--line-2);
  border-radius: 8px; padding: 7px 13px;
}
.dh-grid h1 { font-size: clamp(34px, 4.6vw, 54px); font-weight: 900; line-height: 1.16; letter-spacing: -.02em; margin-top: 22px; }
.dh-grid h1 em { font-style: normal; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.dh-lead { color: var(--text-2); margin-top: 18px; font-size: 16px; max-width: 520px; }
.dh-cta { display: flex; gap: 13px; margin-top: 30px; flex-wrap: wrap; }

/* ---------- 终端下载面板 ---------- */
.term { border: 1px solid var(--line-2); border-radius: 18px; background: linear-gradient(180deg, #1e1409, #150e07); box-shadow: var(--shadow); overflow: hidden; }
.term-bar { display: flex; align-items: center; gap: 7px; padding: 13px 16px; border-bottom: 1px solid var(--line); background: rgba(255, 178, 110, .04); }
.term-bar i { width: 10px; height: 10px; border-radius: 50%; }
.term-bar i:nth-child(1) { background: #ff5f57; }
.term-bar i:nth-child(2) { background: #febc2e; }
.term-bar i:nth-child(3) { background: #28c840; }
.term-bar span { margin-left: 8px; font: 12px "SF Mono", Consolas, monospace; color: var(--text-3); }
.term-body { padding: 8px 16px 14px; }
.tprompt { font: 12.5px "SF Mono", Consolas, monospace; color: var(--text-3); padding: 9px 0 5px; }
.tprompt b { color: var(--brand-2); font-weight: 600; }
.trow { display: flex; align-items: center; gap: 12px; padding: 12px 0; border-bottom: 1px dashed var(--line); }
.trow:last-child { border-bottom: none; }
.tico { width: 30px; height: 30px; border-radius: 9px; background: var(--brand-soft); color: var(--brand-2); display: flex; align-items: center; justify-content: center; flex: none; }
.tico svg { width: 16px; height: 16px; }
.tinfo { flex: 1; min-width: 0; font-size: 13.5px; font-weight: 600; }
.tinfo span { display: block; font: 11px "SF Mono", Consolas, monospace; color: var(--text-3); font-weight: 400; }
.tbtn {
  min-width: 96px; padding: 7px 14px; border-radius: 8px; text-align: center;
  font-size: 12.5px; font-weight: 700;
  background: var(--brand-soft); color: var(--brand-2); border: 1px solid var(--line-2);
  transition: all .2s;
}
.tbtn:hover { background: var(--grad); color: #2a1200; border-color: transparent; }
.tbtn.busy { background: transparent; border-style: dashed; color: var(--brand-2); }
.tbtn.done { background: rgba(61, 220, 132, .14); border-color: rgba(61, 220, 132, .4); color: var(--up); }

/* ---------- 统计（独立卡） ---------- */
.dstats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.dstat { padding: 22px 24px; border: 1px solid var(--line); border-radius: 16px; background: var(--panel); }
.dstat b { display: block; font-size: 26px; font-weight: 800; letter-spacing: -.01em; }
.dstat span { font-size: 12.5px; color: var(--text-3); }

/* ---------- 区块 ---------- */
.section { padding: 84px 0; }
.section--soft { background: var(--bg-soft); }
.shead2 { margin-bottom: 40px; }
.shead2 .tag { font: 12px mono; color: var(--brand-2); letter-spacing: .16em; display: block; margin-bottom: 10px; }
.shead2 h2 { font-size: clamp(24px, 3.2vw, 34px); font-weight: 800; letter-spacing: -.01em; }
.shead2 p { color: var(--text-2); margin-top: 10px; max-width: 620px; }

/* ---------- 平台卡 ---------- */
.pfgrid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 16px; }
.pcard {
  display: flex; flex-direction: column; padding: 26px;
  border: 1px solid var(--line); border-radius: 18px; background: var(--panel);
  transition: all .3s var(--ease);
}
.pcard:hover { border-color: var(--line-2); transform: translateY(-4px); }
.pcard-top { display: flex; align-items: center; gap: 13px; margin-bottom: 16px; }
.pico { width: 46px; height: 46px; border-radius: 13px; background: var(--brand-soft); color: var(--brand-2); display: flex; align-items: center; justify-content: center; flex: none; }
.pico svg { width: 22px; height: 22px; }
.pcard h3 { font-size: 16px; line-height: 1.3; }
.pcard h3 span { display: block; font: 11px "SF Mono", Consolas, monospace; color: var(--text-3); font-weight: 400; }
.pcard > p { color: var(--text-2); font-size: 13.5px; flex: 1; }
.ptag { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 16px; }
.ptag i { font: 11px "SF Mono", Consolas, monospace; font-style: normal; padding: 4px 9px; border-radius: 6px; background: rgba(255, 178, 110, .07); border: 1px solid var(--line); color: var(--text-2); }
.pcard .btn { margin-top: 18px; align-self: flex-start; }

/* ---------- 版本日志时间线 ---------- */
.logs { border-left: 2px solid var(--line-2); margin-left: 8px; padding-left: 28px; display: grid; gap: 28px; }
.log-item { position: relative; }
.log-item::before { content: ""; position: absolute; left: -35px; top: 7px; width: 12px; height: 12px; border-radius: 50%; background: var(--grad); box-shadow: 0 0 0 4px var(--bg); }
.section--soft .log-item::before { box-shadow: 0 0 0 4px var(--bg-soft); }
.log-date { font: 12px "SF Mono", Consolas, monospace; color: var(--brand-2); letter-spacing: .06em; }
.log-item h4 { font-size: 16px; margin: 4px 0 8px; }
.log-item h4 span { font: 12px "SF Mono", Consolas, monospace; color: var(--text-3); margin-left: 8px; font-weight: 400; }
.log-item ul { display: grid; gap: 6px; }
.log-item li { color: var(--text-2); font-size: 13.5px; display: flex; gap: 10px; }
.log-item li::before { content: "—"; color: var(--brand); flex: none; }

/* ---------- 校验区 ---------- */
.veri { display: grid; grid-template-columns: 1fr 1.08fr; gap: 38px; align-items: center; }
.veri h2 { font-size: clamp(22px, 2.6vw, 30px); font-weight: 800; letter-spacing: -.01em; }
.veri .vtxt > p { color: var(--text-2); margin-top: 12px; font-size: 14.5px; }
.vpoints { margin-top: 18px; display: grid; gap: 10px; }
.vpoints li { display: flex; gap: 10px; font-size: 14px; color: var(--text-2); }
.vpoints li::before { content: ""; width: 7px; height: 7px; border-radius: 2px; background: var(--grad); margin-top: 8px; flex: none; }
.codebox { border: 1px solid var(--line-2); border-radius: 16px; background: #0f0904; overflow: hidden; }
.codehead { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 11px 16px; border-bottom: 1px solid var(--line); font: 12px "SF Mono", Consolas, monospace; color: var(--text-3); }
.copybtn { padding: 6px 12px; border-radius: 7px; font-size: 12px; font-weight: 600; border: 1px solid var(--line-2); color: var(--brand-2); background: var(--brand-soft); transition: all .2s; }
.copybtn:hover { background: var(--grad); color: #2a1200; }
.copybtn.ok { background: rgba(61, 220, 132, .16); border-color: rgba(61, 220, 132, .4); color: var(--up); }
.codebox pre { padding: 16px; font: 12.5px/1.9 "SF Mono", "JetBrains Mono", Consolas, monospace; color: #e8cfae; overflow-x: auto; }
.codebox .cmd { color: var(--text-3); }
.codebox .hash { color: var(--brand-2); }

/* ---------- FAQ 手风琴（单开、grid-rows 动画） ---------- */
.faq-wrap { max-width: 780px; display: grid; gap: 12px; }
.faq { border: 1px solid var(--line); border-radius: 14px; background: var(--panel); overflow: hidden; transition: border-color .25s; }
.faq.open { border-color: var(--line-2); }
.faq-q { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 19px 22px; font-size: 15px; font-weight: 600; text-align: left; }
.faq-q i { font-style: normal; color: var(--brand-2); font-size: 20px; transition: transform .28s var(--ease); line-height: 1; }
.faq.open .faq-q i { transform: rotate(45deg); }
.faq-a { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .32s var(--ease); }
.faq.open .faq-a { grid-template-rows: 1fr; }
.faq-a > div { overflow: hidden; }
.faq-a p { padding: 0 22px 20px; color: var(--text-2); font-size: 14px; }

/* ---------- CTA 横幅 ---------- */
.cta-band {
  display: flex; align-items: center; justify-content: space-between; gap: 30px;
  padding: 40px 46px; border-radius: 20px; border: 1px solid var(--line-2);
  background: linear-gradient(100deg, rgba(255, 140, 46, .16), rgba(255, 140, 46, .03) 55%), var(--panel);
}
.cta-band h2 { font-size: clamp(21px, 2.4vw, 27px); font-weight: 800; letter-spacing: -.01em; }
.cta-band p { color: var(--text-2); margin-top: 8px; font-size: 14px; }
.cta-band .row { display: flex; gap: 12px; flex: none; flex-wrap: wrap; }

/* ---------- 页脚 ---------- */
.foot4 { background: #0e0803; }
.foot4 .topline { height: 3px; background: var(--grad); }
.foot4-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 36px; padding: 50px 0 40px; }
.foot4 h4 { font-size: 12.5px; letter-spacing: .14em; color: var(--text-3); margin-bottom: 15px; font-weight: 700; }
.foot4 a.fl { display: block; padding: 6px 0; color: var(--text-2); font-size: 14px; transition: color .2s; }
.foot4 a.fl:hover { color: var(--brand-2); }
.foot4 .fbrand { display: flex; align-items: center; gap: 9px; }
.foot4 .fbrand svg { width: 26px; height: 26px; }
.foot4 .fbrand b { font-size: 17px; font-weight: 800; }
.foot4 .fdesc { color: var(--text-2); font-size: 13.5px; margin-top: 14px; max-width: 300px; }
.foot4-note { border-top: 1px solid var(--line); padding: 18px 0; color: var(--text-3); font-size: 12px; line-height: 1.9; }
.foot4-base { display: flex; justify-content: space-between; gap: 14px; padding: 16px 0 24px; color: var(--text-3); font-size: 12.5px; flex-wrap: wrap; }

/* ---------- 内页头（左对齐） ---------- */
.phead-l { padding: 56px 0 34px; border-bottom: 1px solid var(--line); background: linear-gradient(180deg, rgba(255, 140, 46, .07), transparent); }
.phead-l .eyebrow { font: 12px "SF Mono", Consolas, monospace; color: var(--brand-2); letter-spacing: .12em; }
.phead-l h1 { font-size: clamp(28px, 3.8vw, 42px); font-weight: 800; letter-spacing: -.01em; margin-top: 10px; }
.phead-l p { color: var(--text-2); margin-top: 12px; max-width: 660px; font-size: 15px; }

/* ---------- 表格 ---------- */
.tbl-wrap { border: 1px solid var(--line); border-radius: 16px; background: var(--panel); overflow: hidden; }
.tbl { width: 100%; border-collapse: collapse; font-size: 14px; }
.tbl th { text-align: left; padding: 13px 18px; white-space: nowrap; font-size: 12.5px; font-weight: 600; color: var(--text-3); border-bottom: 1px solid var(--line); }
.tbl td { padding: 13px 18px; border-bottom: 1px solid var(--line); color: var(--text-2); }
.tbl td:first-child { color: var(--text); font-weight: 600; }
.tbl tr:last-child td { border-bottom: none; }

/* ---------- 下划线页签 ---------- */
.tabset { display: flex; gap: 26px; border-bottom: 1px solid var(--line); overflow-x: auto; }
.tabset button { padding: 13px 2px; font-size: 14.5px; font-weight: 600; color: var(--text-2); border-bottom: 2px solid transparent; margin-bottom: -1px; white-space: nowrap; transition: all .2s; }
.tabset button:hover { color: var(--text); }
.tabset button.on { color: var(--brand-2); border-bottom-color: var(--brand); }
.tabpane { display: none; padding-top: 32px; }
.tabpane.on { display: block; }

/* ---------- 步骤列表（描边数字） ---------- */
.steplist { display: grid; gap: 14px; }
.sitem { display: flex; gap: 18px; padding: 20px 22px; border: 1px solid var(--line); border-radius: 14px; background: var(--panel); }
.sno { font: 800 22px/1.35 "SF Mono", Consolas, monospace; color: transparent; -webkit-text-stroke: 1.2px var(--brand); flex: none; width: 44px; }
.sitem b { display: block; font-size: 15px; margin-bottom: 4px; }
.sitem p { color: var(--text-2); font-size: 13.5px; }

/* ---------- 二维码卡 ---------- */
.qrgrid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.qrcard { display: flex; align-items: center; gap: 20px; padding: 24px; border: 1px solid var(--line); border-radius: 18px; background: var(--panel); }
.qrcard img { width: 104px; height: 104px; border-radius: 12px; background: #fff; padding: 7px; flex: none; }
.qrcard b { font-size: 15.5px; display: block; }
.qrcard p { color: var(--text-2); font-size: 13px; margin-top: 6px; }

/* ---------- 入场动效 ---------- */
html.js [data-reveal] { opacity: 0; transform: translateY(22px); transition: opacity .65s var(--ease), transform .65s var(--ease); }
html.js [data-reveal].in { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 1020px) {
  .dh-grid { grid-template-columns: 1fr; gap: 40px; }
  .veri { grid-template-columns: 1fr; gap: 28px; }
}
@media (max-width: 920px) {
  .nb-menu { display: none; }
  .nb-right > .btn { display: none; }
  .burger { display: flex; }
  .dstats { grid-template-columns: repeat(2, 1fr); }
  .foot4-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
}
@media (max-width: 640px) {
  .wrap { padding: 0 18px; }
  .section { padding: 62px 0; }
  .dl-hero { padding: 48px 0 16px; }
  .dstats { grid-template-columns: 1fr; }
  .qrgrid { grid-template-columns: 1fr; }
  .cta-band { flex-direction: column; align-items: flex-start; padding: 32px 26px; }
  .foot4-grid { grid-template-columns: 1fr; }
  .qrcard { flex-direction: row; }
  .trow .tinfo span { font-size: 10px; }
  .tbtn { min-width: 86px; padding: 7px 10px; }
}