/* ═══════════════════════════════════════════════════════════
   Reudex — Knowledge, engineered.
   Dark, glassy, engineering-precise. Palette from the logo:
   purple #a96bf5 · blue #4a7dff · teal #2fd6c3 on near-black blue.
   ═══════════════════════════════════════════════════════════ */

/* Sora (SIL OFL 1.1) — 本地自托管，替代 Google Fonts：
   大陆网络无法访问 fonts.googleapis.com，自托管同时省一次跨域握手。 */
@font-face {
  font-family: "Sora";
  font-style: normal;
  font-weight: 100 800;
  font-display: swap;
  src: url("assets/fonts/sora-latin-ext.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Sora";
  font-style: normal;
  font-weight: 100 800;
  font-display: swap;
  src: url("assets/fonts/sora-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  --bg: #0a0a10;
  --bg-2: #0e0e16;
  --panel: rgba(255, 255, 255, 0.035);
  --panel-2: rgba(255, 255, 255, 0.06);
  --line: rgba(255, 255, 255, 0.09);
  --line-soft: rgba(255, 255, 255, 0.055);
  --text: #eceef4;
  --text-soft: #9aa0b4;
  --text-faint: #6a7086;
  --purple: #a96bf5;
  --blue: #4a7dff;
  --teal: #2fd6c3;
  --grad: linear-gradient(120deg, var(--purple), var(--blue) 52%, var(--teal));
  --radius: 14px;
  --font: "Sora", "PingFang SC", "Noto Sans SC", "Helvetica Neue", sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
::selection { background: rgba(74, 125, 255, 0.35); }

/* 顶部一道极细的品牌渐变线：整站唯一的装饰性渐变 */
body::before {
  content: "";
  position: fixed; top: 0; left: 0; right: 0; height: 2px;
  background: var(--grad);
  opacity: 0.85;
  z-index: 100;
}

/* ── 通用 ── */
.wrap, .nav-inner, .footer-inner { max-width: 1080px; margin: 0 auto; }
.section { padding: clamp(72px, 12vh, 132px) clamp(20px, 5vw, 48px); max-width: 1080px; margin: 0 auto; }
.section-title {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  letter-spacing: -0.015em;
  line-height: 1.2;
  margin-bottom: clamp(36px, 6vh, 60px);
  text-align: center;
}
.section-title.left { text-align: left; }

/* ── 导航 ── */
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: rgba(10, 10, 16, 0.72);
  border-bottom: 1px solid var(--line-soft);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px clamp(20px, 5vw, 48px);
}
.brand {
  display: inline-flex; align-items: center; gap: 9px;
  text-decoration: none; color: var(--text);
  font-weight: 700; font-size: 17px; letter-spacing: 0.01em;
}
.brand-chip { border-radius: 6px; }
.nav-links { display: flex; align-items: center; gap: clamp(16px, 3vw, 32px); }
.nav-links a {
  color: var(--text-soft); text-decoration: none; font-size: 14.5px; font-weight: 500;
  transition: color 0.25s var(--ease);
}
.nav-links a:hover { color: var(--text); }
.lang-btn {
  font-family: inherit; font-size: 13px; font-weight: 600;
  color: var(--text-soft); background: var(--panel-2);
  border: 1px solid var(--line); border-radius: 99px;
  padding: 6px 14px; cursor: pointer;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}
.lang-btn:hover { color: var(--text); border-color: rgba(255, 255, 255, 0.22); }
@media (max-width: 640px) { .nav-links a { display: none; } }

/* ── Hero ── */
.hero {
  padding: clamp(76px, 13vh, 150px) clamp(20px, 5vw, 48px) clamp(48px, 8vh, 90px);
  max-width: 1080px; margin: 0 auto;
  text-align: center;
}
.hero-icon {
  display: block;              /* inline img 会跟 .eyebrow 挤同一行：图标偏左、徽章坠右下 */
  margin: 0 auto 26px;
  border-radius: 17px;
  box-shadow: 0 18px 50px rgba(74, 125, 255, 0.22), 0 2px 8px rgba(0, 0, 0, 0.5);
}
.eyebrow {
  display: inline-block;
  font-size: 12.5px; font-weight: 600; letter-spacing: 0.26em; text-transform: uppercase;
  color: var(--text-faint);
  border: 1px solid var(--line); border-radius: 99px;
  padding: 7px 18px; margin-bottom: 26px;
}
h1 {
  font-size: clamp(42px, 7.5vw, 84px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 26px;
}
.hero-sub {
  font-size: clamp(16px, 2vw, 19px);
  color: var(--text-soft);
  max-width: 36em;
  margin: 0 auto;
}
.hero-cta {
  margin-top: 40px;
  display: flex; justify-content: center; align-items: center; gap: 18px; flex-wrap: wrap;
}
.btn {
  display: inline-block; text-decoration: none;
  font-size: 15.5px; font-weight: 600; letter-spacing: 0.01em;
  padding: 14px 32px; border-radius: 12px;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease),
              background 0.3s var(--ease), border-color 0.3s var(--ease);
}
.btn-primary {
  background: var(--grad);
  color: #fff;
  box-shadow: 0 10px 34px rgba(74, 125, 255, 0.3);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 44px rgba(74, 125, 255, 0.4); }
.btn-ghost {
  color: var(--text-soft);
  border: 1px solid var(--line);
  background: var(--panel);
}
.btn-ghost:hover { color: var(--text); border-color: rgba(255, 255, 255, 0.22); transform: translateY(-2px); }
.btn-lg { padding: 17px 46px; font-size: 17px; }

/* ── 截图占位 ── */
.shot-frame { margin-top: clamp(48px, 8vh, 80px); }
.shot-window {
  max-width: 880px; margin: 0 auto;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.55);
}
.shot-dots {
  display: flex; gap: 8px; padding: 14px 18px;
  border-bottom: 1px solid var(--line-soft);
}
.shot-dots span { width: 11px; height: 11px; border-radius: 50%; background: rgba(255, 255, 255, 0.14); }
.shot-body { display: grid; grid-template-columns: 220px 1fr; min-height: 380px; }
.shot-sidebar {
  border-right: 1px solid var(--line-soft);
  padding: 26px 22px;
  display: flex; flex-direction: column; gap: 16px;
}
.shot-main { padding: 30px 32px; }
.shot-line {
  height: 11px; border-radius: 6px;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05));
}
.shot-sidebar .shot-line { background: rgba(255, 255, 255, 0.07); }
.shot-main .shot-line { margin-bottom: 22px; }
.w40 { width: 40%; } .w50 { width: 50%; } .w60 { width: 60%; }
.w70 { width: 70%; } .w75 { width: 75%; } .w80 { width: 80%; } .w90 { width: 90%; }
.shot-tags { display: flex; gap: 10px; margin-top: 6px; }
.shot-tags span {
  width: 64px; height: 22px; border-radius: 99px;
  background: linear-gradient(90deg, rgba(169, 107, 245, 0.25), rgba(74, 125, 255, 0.25));
}
.shot-tags span:nth-child(2) { background: linear-gradient(90deg, rgba(74, 125, 255, 0.25), rgba(47, 214, 195, 0.25)); }
.shot-tags span:nth-child(3) { background: rgba(255, 255, 255, 0.08); }
.shot-note {
  margin-top: 18px; text-align: center;
  font-size: 13px; color: var(--text-faint); letter-spacing: 0.04em;
}
@media (max-width: 640px) { .shot-body { grid-template-columns: 1fr; } .shot-sidebar { display: none; } }

/* ── 特性网格 ── */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
@media (max-width: 960px) { .feature-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .feature-grid { grid-template-columns: 1fr; } }
.feature {
  background: var(--panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  padding: 30px 28px;
  transition: border-color 0.35s var(--ease), background 0.35s var(--ease), transform 0.35s var(--ease);
}
.feature:hover { border-color: rgba(255, 255, 255, 0.16); background: var(--panel-2); transform: translateY(-3px); }
.feature-icon { color: var(--blue); margin-bottom: 18px; }
.feature:nth-child(3n + 1) .feature-icon { color: var(--purple); }
.feature:nth-child(3n) .feature-icon { color: var(--teal); }
.feature h3 { font-size: 17px; font-weight: 700; letter-spacing: -0.01em; margin-bottom: 10px; }
.feature p { font-size: 14.5px; color: var(--text-soft); }

/* ── 品牌故事 ── */
.story {
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  background: var(--bg-2);
}
.story-grid {
  display: grid; grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(36px, 6vw, 84px); align-items: center;
  max-width: 1080px; margin: 0 auto;
}
@media (max-width: 820px) { .story-grid { grid-template-columns: 1fr; } }
.story-text p { color: var(--text-soft); font-size: 15.5px; margin-bottom: 18px; }
.story-text em { color: var(--teal); font-style: italic; }
.story-tagline {
  font-weight: 700; color: var(--text) !important; font-size: 16.5px !important;
  border-left: 2px solid var(--blue); padding-left: 16px; margin-top: 26px;
}
.svg-label { font-family: var(--font); font-size: 12px; letter-spacing: 0.08em; }
.svg-label.bold { font-size: 14px; font-weight: 700; letter-spacing: 0.02em; }
.story-figure { max-width: 380px; margin: 0 auto; width: 100%; }

/* ── 定价 ── */
.pr-sub {
  text-align: center; color: var(--text-soft);
  font-size: 15.5px; max-width: 34em; margin: -26px auto 48px;
}
.tiers {
  display: grid; grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; max-width: 920px; margin: 0 auto;
  background: var(--panel);
}
@media (max-width: 820px) { .tiers { grid-template-columns: 1fr; } }
.tier { padding: clamp(28px, 4vw, 42px); border-left: 1px solid var(--line-soft); }
.tier:first-child { border-left: none; }
@media (max-width: 820px) {
  .tier { border-left: none; border-top: 1px solid var(--line-soft); }
  .tier:first-child { border-top: none; }
}
.tier.hot { background: rgba(74, 125, 255, 0.07); position: relative; }
.tier.hot::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: var(--grad);
}
.tier-name { font-size: 19px; font-weight: 700; }
.tier-tag { font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-faint); margin: 4px 0 20px; }
.tier.hot .tier-tag { color: var(--blue); }
.tier-price { font-size: clamp(34px, 4vw, 46px); font-weight: 800; letter-spacing: -0.02em; }
.tier-price s { font-size: 0.48em; font-weight: 500; color: var(--text-faint); margin-right: 8px; }
.tier-unit { font-size: 0.42em; font-weight: 500; color: var(--text-faint); margin-left: 2px; }
.tier ul { list-style: none; margin-top: 20px; font-size: 14px; color: var(--text-soft); }
.tier li { padding: 7px 0; border-top: 1px dashed var(--line-soft); }
.tier li::before { content: "·"; color: var(--teal); font-weight: 800; margin-right: 10px; }
.tier-buy {
  display: inline-block; margin-top: 24px;
  font-size: 14px; font-weight: 600; text-decoration: none; color: var(--blue);
  border-bottom: 1.5px solid var(--blue); padding-bottom: 2px;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}
.tier-buy:hover { color: var(--teal); border-color: var(--teal); }
.tier-hint { margin-top: 12px; font-size: 12.5px; color: var(--text-faint); line-height: 1.6; }
.team-note { margin-top: 22px; text-align: center; font-size: 13.5px; color: var(--text-faint); }

/* ── 语言专属区块（购买入口按语言分流：中文人民币 / 英文美元，都走 Dodo）── */
[data-lang-only][hidden] { display: none; }
/* .tier-buy 用在 <button> 上时要清掉浏览器默认外观 */
button.tier-buy {
  background: none; border: none; border-bottom: 1.5px solid var(--blue);
  font-family: inherit; cursor: pointer; padding: 0 0 2px;
}

/* 兜底入口（只有支付宝的用户走收款码）：比主按钮轻一档，不跟它抢注意力 */
.tier-alt {
  display: block; margin-top: 14px; padding: 0;
  background: none; border: none; font-family: inherit; cursor: pointer;
  font-size: 12.5px; color: var(--text-faint);
  text-decoration: underline; text-decoration-color: var(--line); text-underline-offset: 3px;
  transition: color 0.25s var(--ease);
}
.tier-alt:hover { color: var(--text-soft); }
.tier-alt[hidden] { display: none; }

/* ── 兜底收款码面板 ── */
body.pay-open { overflow: hidden; }
.pay-modal[hidden] { display: none; }  /* 作者样式的 display:flex 会盖过 UA 的 [hidden]，必须显式关掉 */
.pay-modal {
  position: fixed; inset: 0; z-index: 90;
  display: flex; align-items: center; justify-content: center;
  padding: 24px; background: rgba(6, 8, 16, 0.66);
  -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
}
.pay-box {
  position: relative; width: 100%; max-width: 430px;
  background: var(--bg-2); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 34px 30px 26px; text-align: center;
}
.pay-close {
  position: absolute; top: 8px; right: 12px;
  width: 32px; height: 32px; background: none; border: none;
  cursor: pointer; font-size: 22px; line-height: 1; color: var(--text-faint);
}
.pay-close:hover { color: var(--text); }
.pay-title { font-size: 20px; font-weight: 700; margin: 0 0 6px; }
.pay-sub { font-size: 13.5px; color: var(--text-soft); margin: 0 0 20px; }
.pay-qr-wrap {
  display: flex; align-items: center; justify-content: center;
  width: 264px; height: auto; margin: 0 auto 20px; padding: 10px;
  border: 1px solid var(--line); border-radius: var(--radius);
  background: #fff; overflow: hidden;
}
.pay-qr { display: block; width: 100%; height: auto; object-fit: contain; }
.pay-qr-fallback { display: none; font-size: 13.5px; color: var(--text-soft); padding: 0 26px; }
.pay-qr-wrap.no-qr { background: transparent; border-style: dashed; }
.pay-qr-wrap.no-qr .pay-qr { display: none; }
.pay-qr-wrap.no-qr .pay-qr-fallback { display: block; }
.pay-steps {
  text-align: left; margin: 0 auto 16px; padding-left: 20px;
  max-width: 330px; font-size: 13.5px; color: var(--text-soft); line-height: 1.9;
}
.pay-cta {
  display: block; margin: 2px auto 14px; max-width: 330px;
  padding: 11px 16px; border-radius: 9px; text-align: center;
  background: var(--teal); color: #fff; font-size: 14.5px; font-weight: 600;
  text-decoration: none;
}
.pay-cta:hover { filter: brightness(1.08); }
.pay-note { font-size: 12.5px; color: var(--text-faint); margin: 0; }
.pay-note + .pay-note { margin-top: 7px; }

/* ── 下载 ── */
.download { text-align: center; }
.download .section-title { margin-bottom: 18px; }
.dl-sub { color: var(--text-soft); font-size: 15px; max-width: 34em; margin: 0 auto 36px; }
.dl-meta { margin-top: 20px; font-size: 13.5px; color: var(--text-faint); letter-spacing: 0.03em; }
.dl-hint { margin-top: 10px; font-size: 13.5px; color: var(--text-faint); }
.dl-hint::before { content: "⚠ "; }

/* ── 页脚 ── */
.footer { border-top: 1px solid var(--line-soft); padding: 40px clamp(20px, 5vw, 48px) 56px; }
.footer-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 20px; flex-wrap: wrap;
  max-width: 1080px;
}
.footer-brand {
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 700; font-size: 15px;
}
.brand-chip.sm { border-radius: 4px; }
.footer-links { display: flex; gap: 24px; }
.footer-links a { color: var(--text-soft); text-decoration: none; font-size: 13.5px; }
.footer-links a:hover { color: var(--text); }
.footer-copy { font-size: 13px; color: var(--text-faint); }

/* ═══════════════════════════════════════════════════════════
   HELP CENTER
   左侧粘性目录 + 右侧文档流。全程复用首页的变量与节奏，
   只用 hc- 前缀新增类，避免影响落地页。
   ═══════════════════════════════════════════════════════════ */

.nav-links a.on { color: var(--text); }

.hc-hero {
  padding: clamp(64px, 11vh, 120px) clamp(20px, 5vw, 48px) clamp(28px, 5vh, 44px);
  max-width: 1080px; margin: 0 auto;
  text-align: center;
}
.hc-h1 {
  font-size: clamp(34px, 5.4vw, 60px);
  margin-bottom: 18px;
}
.hc-sub {
  font-size: clamp(15px, 1.8vw, 17.5px);
  color: var(--text-soft);
  max-width: 40em; margin: 0 auto;
}
.hc-jump {
  margin-top: 30px;
  display: flex; justify-content: center; flex-wrap: wrap; gap: 10px;
}
.hc-jump a {
  font-size: 13.5px; font-weight: 600; text-decoration: none;
  color: var(--text-soft);
  border: 1px solid var(--line); border-radius: 99px;
  background: var(--panel);
  padding: 8px 18px;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease), background 0.25s var(--ease);
}
.hc-jump a:hover { color: var(--text); border-color: rgba(255, 255, 255, 0.22); background: var(--panel-2); }

.hc-layout {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 clamp(20px, 5vw, 48px) clamp(56px, 9vh, 96px);
  display: grid;
  grid-template-columns: 218px 1fr;
  gap: clamp(28px, 5vw, 64px);
  align-items: start;
}
@media (max-width: 880px) { .hc-layout { grid-template-columns: 1fr; gap: 24px; } }

/* ── 目录 ── */
.hc-toc {
  position: sticky; top: 88px;
  display: flex; flex-direction: column; gap: 2px;
  border-left: 1px solid var(--line-soft);
  padding-left: 16px;
}
.hc-toc-title {
  font-size: 11.5px; font-weight: 700; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--text-faint); margin-bottom: 12px;
}
.hc-toc a {
  font-size: 13.5px; color: var(--text-faint); text-decoration: none;
  padding: 5px 0; line-height: 1.45;
  transition: color 0.22s var(--ease);
}
.hc-toc a:hover { color: var(--text-soft); }
.hc-toc a.on { color: var(--blue); font-weight: 600; }
@media (max-width: 880px) {
  .hc-toc {
    position: static;
    flex-direction: row; flex-wrap: wrap; gap: 8px;
    border-left: none; padding-left: 0;
    border-bottom: 1px solid var(--line-soft); padding-bottom: 18px;
  }
  .hc-toc-title { width: 100%; margin-bottom: 4px; }
  .hc-toc a {
    border: 1px solid var(--line-soft); border-radius: 99px;
    padding: 6px 13px; font-size: 12.5px;
  }
  .hc-toc a.on { border-color: var(--blue); }
}

/* ── 文档 ── */
.hc-doc { min-width: 0; }

/* 法律页：窄栏居中，复用 hc-doc 正文样式 */
.legal-doc { max-width: 760px; margin: 0 auto; padding: 24px 24px 96px; }
.legal-doc h2 { margin-top: 8px; }
.legal-doc h3 { color: var(--text); font-size: 16px; margin: 22px 0 8px; }
.legal-doc .hc-sec + .hc-sec { margin-top: 40px; border-top: 1px solid rgba(255,255,255,.08); padding-top: 32px; }
.hc-sec {
  padding: 30px 0 clamp(38px, 6vh, 56px);
  border-bottom: 1px solid var(--line-soft);
  scroll-margin-top: 92px;
}
.hc-sec:last-child { border-bottom: none; }
.hc-sec h2 {
  display: flex; align-items: baseline; gap: 14px;
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 700; letter-spacing: -0.015em;
  margin-bottom: 18px;
}
.hc-num {
  font-size: 12.5px; font-weight: 700; letter-spacing: 0.1em;
  color: var(--blue);
  border: 1px solid rgba(74, 125, 255, 0.35); border-radius: 7px;
  padding: 3px 8px;
  flex: none;
}
.hc-doc p { color: var(--text-soft); font-size: 15px; margin-bottom: 14px; }
.hc-doc p:last-child { margin-bottom: 0; }
.hc-doc strong { color: var(--text); font-weight: 600; }
.hc-doc em { color: var(--teal); font-style: normal; }
.hc-doc a:not(.btn) { color: var(--blue); }
.hc-doc code {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
  font-size: 0.88em;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--line-soft);
  border-radius: 6px; padding: 2px 7px;
  color: var(--text);
}
.hc-doc kbd {
  font-family: inherit; font-size: 0.84em; font-weight: 600;
  color: var(--text);
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  border-radius: 6px;
  padding: 2px 7px;
  white-space: nowrap;
}
.hc-note {
  font-size: 14px !important;
  color: var(--text-faint) !important;
  border-left: 2px solid var(--line);
  padding-left: 14px;
}

/* 有序步骤 */
.hc-steps { list-style: none; counter-reset: hc-step; }
.hc-steps li {
  counter-increment: hc-step;
  position: relative;
  color: var(--text-soft); font-size: 15px;
  padding: 0 0 16px 42px;
}
.hc-steps li:last-child { padding-bottom: 0; }
.hc-steps li::before {
  content: counter(hc-step);
  position: absolute; left: 0; top: 1px;
  width: 26px; height: 26px; border-radius: 50%;
  display: grid; place-items: center;
  font-size: 12.5px; font-weight: 700; color: var(--blue);
  background: rgba(74, 125, 255, 0.1);
  border: 1px solid rgba(74, 125, 255, 0.3);
}
.hc-steps li strong { color: var(--text); }

/* 屏保彩蛋：全站唯一一处强调用 */
.hc-callout {
  margin: clamp(30px, 5vh, 46px) 0;
  padding: clamp(26px, 4vw, 36px) !important;
  border: 1px solid var(--line) !important;
  border-radius: var(--radius);
  background:
    linear-gradient(140deg, rgba(169, 107, 245, 0.10), rgba(74, 125, 255, 0.07) 55%, rgba(47, 214, 195, 0.08));
  position: relative; overflow: hidden;
  scroll-margin-top: 92px;
}
.hc-callout::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: var(--grad);
}
.hc-callout h2 { margin-bottom: 14px; }
.hc-kicker {
  font-size: 11.5px !important; font-weight: 700; letter-spacing: 0.24em; text-transform: uppercase;
  color: var(--teal) !important; margin-bottom: 10px !important;
}

/* 快捷键表 */
.hc-table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); }
.hc-table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.hc-table th {
  text-align: left; font-size: 11.5px; font-weight: 700;
  letter-spacing: 0.16em; text-transform: uppercase; color: var(--text-faint);
  padding: 14px 20px; border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
  white-space: nowrap;
}
.hc-table td {
  padding: 11px 20px; color: var(--text-soft);
  border-bottom: 1px solid var(--line-soft);
}
.hc-table tr:last-child td { border-bottom: none; }
.hc-table td:last-child { white-space: nowrap; }
.hc-table tbody tr:hover td { background: rgba(255, 255, 255, 0.025); }

/* FAQ */
.hc-faq {
  border: 1px solid var(--line-soft); border-radius: 12px;
  background: var(--panel);
  margin-bottom: 10px;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}
.hc-faq[open] { border-color: var(--line); background: var(--panel-2); }
.hc-faq summary {
  cursor: pointer; list-style: none;
  padding: 15px 20px;
  font-size: 15px; font-weight: 600; color: var(--text);
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.hc-faq summary::-webkit-details-marker { display: none; }
.hc-faq summary::after {
  content: "+"; color: var(--text-faint); font-weight: 400; font-size: 19px; line-height: 1;
  flex: none;
}
.hc-faq[open] summary::after { content: "–"; color: var(--blue); }
.hc-faq p {
  padding: 0 20px 18px;
  font-size: 14.5px;
}

/* 支持 */
.hc-support-links { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.hc-support-links .btn { font-size: 14.5px; padding: 12px 24px; }


/* ── 进场动效 ── */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn, .feature { transition: none; }
}