/* Evo 官网样式。深色底和卡片沿用面板（panel/static/style.css），强调色换成图标的蓝色。
   国内访问：不加载任何外部资源；中文用系统字体，英文和数字用自带的 Chakra Petch（OFL 许可，见 fonts/OFL.txt）。
   设计参考 ui-ux-pro-max skill：极简 / 瑞士风格、大留白；普通滚动（不劫持滚轮）；动效轻、关了"动画效果"就不播放；键盘焦点清楚可见。 */

@font-face { font-family: "Chakra Petch"; font-weight: 500; font-display: swap; src: url("fonts/ChakraPetch-500.woff2") format("woff2"); }
@font-face { font-family: "Chakra Petch"; font-weight: 600; font-display: swap; src: url("fonts/ChakraPetch-600.woff2") format("woff2"); }
@font-face { font-family: "Chakra Petch"; font-weight: 700; font-display: swap; src: url("fonts/ChakraPetch-700.woff2") format("woff2"); }

:root {
  --bg: #0D0F13;
  --card: #151820;
  --text: #ECEEF2;
  --muted: #9AA3B2;
  --border: #262C38;
  --blue: #005CF9;        /* 图标左半边 */
  --blue-deep: #003AC8;   /* 图标右半边 */
  --blue-text: #5B9BFF;   /* 深色底上的蓝色文字（#005CF9 太暗，看不清） */
  --blue-soft: rgba(0, 92, 249, 0.12);
  --good: #7CE8B8;
  --bad: #FF8A8A;
  --wrap: 1120px;
  --header-h: 64px;
  --latin: "Chakra Petch", "Microsoft YaHei UI", sans-serif;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 24px); }  /* 点导航跳过去时，标题不被顶栏挡住 */
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 16px/1.7 "Microsoft YaHei UI", "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
h1, h2, h3, p { margin: 0; }
code { font-family: Consolas, "Cascadia Mono", ui-monospace, monospace; font-size: 0.9em; color: var(--text); }
svg { fill: none; stroke: currentColor; stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round; }

/* 键盘操作时的焦点框 */
:focus-visible { outline: 2px solid var(--blue-text); outline-offset: 3px; border-radius: 6px; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.keep { display: inline-block; }  /* 标题和简介只在逗号处换行 */

/* 只给键盘用户看的"跳到正文" */
.skip { position: absolute; left: 16px; top: -48px; z-index: 20; padding: 8px 16px; border-radius: 6px; background: var(--blue); color: #FFFFFF; }
.skip:focus { top: 12px; }

/* ===== 顶栏 ===== */
.top {
  position: sticky; top: 0; z-index: 10;
  background: rgba(13, 15, 19, 0.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.top .wrap { display: flex; align-items: center; height: var(--header-h); gap: 32px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand-name { font-family: var(--latin); font-weight: 700; font-size: 22px; letter-spacing: 3px; }
.brand-sm { font-size: 18px; }
.nav { display: flex; gap: 28px; margin-left: auto; font-size: 15px; color: var(--muted); }
.nav a { padding: 6px 0; transition: color 0.2s; }
.nav a:hover { color: var(--text); }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 48px; padding: 0 28px; border-radius: 8px;
  font: inherit; font-weight: 600; white-space: nowrap; cursor: pointer;
  border: 1px solid var(--border); background: var(--card); color: var(--text);
  transition: background-color 0.2s, border-color 0.2s, transform 0.15s;
}
.btn:hover { border-color: var(--muted); }
.btn:active { transform: translateY(1px); }
.btn svg { flex: none; stroke-width: 2; }
.btn-primary { border: none; background: linear-gradient(90deg, var(--blue), var(--blue-deep)); color: #FFFFFF; }
.btn-primary:hover { background: linear-gradient(90deg, #1A6CFF, #0A45D8); }
.btn-sm { min-height: 40px; padding: 0 18px; font-size: 15px; }

/* ===== 首屏 ===== */
.hero { position: relative; text-align: center; padding: 104px 0 96px; overflow: hidden; }
/* 顶部和截图后面各有一团很淡的蓝光 */
.hero::before, .hero::after {
  content: ""; position: absolute; z-index: -1; left: 50%; transform: translateX(-50%); pointer-events: none;
  background: radial-gradient(closest-side, rgba(0, 92, 249, 0.22), rgba(0, 92, 249, 0));
}
.hero::before { top: -260px; width: 1100px; height: 640px; }
.hero::after { bottom: -120px; width: 1400px; height: 700px; opacity: 0.7; }
.hero-icon { width: 72px; height: 72px; margin: 0 auto 28px; }
.kicker {
  margin-bottom: 16px;
  font-family: var(--latin); font-weight: 600;
  font-size: 14px; letter-spacing: 3px; text-transform: uppercase;
  color: var(--blue-text);
}
.hero h1 { font-size: clamp(40px, 7vw, 72px); line-height: 1.15; font-weight: 700; letter-spacing: 2px; }
.lead { max-width: 720px; margin: 24px auto 0; font-size: clamp(16px, 2.2vw, 19px); color: var(--muted); }
.actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 14px; margin-top: 40px; }
.actions-left { justify-content: flex-start; margin-top: 28px; }
.meta { margin-top: 18px; font-size: 14px; color: var(--muted); }
.meta span + span::before { content: "·"; margin: 0 10px; color: var(--border); }

/* 产品截图：画成 Evo 窗口的样子（深色标题栏 + 图标 + 最小化/最大化/关闭） */
.shot {
  margin: 72px auto 0; max-width: 1040px;
  border: 1px solid var(--border); border-radius: 12px; overflow: hidden;
  background: var(--card);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(91, 155, 255, 0.06);
}
.shot-bar {
  display: flex; align-items: center; gap: 8px; height: 34px; padding: 0 6px 0 12px;
  background: #08090C; border-bottom: 1px solid var(--border);
  font-family: var(--latin); font-weight: 700; font-size: 12px; letter-spacing: 2px; color: var(--muted);
}
.shot-bar span { margin-right: auto; }
.shot-bar svg { width: 10px; height: 10px; margin: 0 14px; stroke-width: 1; stroke-linecap: butt; }
.shot figcaption { padding: 10px; font-size: 13px; color: var(--muted); border-top: 1px solid var(--border); }

/* ===== 通用的分节 ===== */
.section { padding: 120px 0; border-top: 1px solid var(--border); }
.section-head { max-width: 720px; margin-bottom: 56px; }
.section-head h2, .cta h2 { font-size: clamp(28px, 4.2vw, 42px); line-height: 1.3; letter-spacing: 1px; }
.section-head > p:not(.kicker) { margin-top: 16px; font-size: 17px; color: var(--muted); }

.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 28px; }
.card h3 { font-size: 18px; margin-bottom: 8px; }
.card p { font-size: 15px; color: var(--muted); }

/* ===== 01 功能 ===== */
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card-icon {
  display: grid; place-items: center; width: 44px; height: 44px; margin-bottom: 20px;
  border-radius: 10px; color: var(--blue-text);
  background: var(--blue-soft); border: 1px solid rgba(91, 155, 255, 0.18);
}
.card-icon svg { width: 24px; height: 24px; }

/* ===== 02 使用方法 ===== */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px 24px; counter-reset: step; }
.step { padding-top: 24px; border-top: 2px solid var(--border); }
.step::before {
  counter-increment: step; content: counter(step, decimal-leading-zero);
  display: block; margin-bottom: 14px;
  font-family: var(--latin); font-weight: 700; font-size: 40px; line-height: 1; color: #3B4352;
}
.step h3 { font-size: 18px; margin-bottom: 8px; }
.step p { font-size: 15px; color: var(--muted); }
/* 第 3 步最容易忘，用蓝色标出来 */
.step-key { border-top-color: var(--blue); }
.step-key::before { color: var(--blue-text); }

/* ===== 03 安全 ===== */
.safety { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.list-title { margin-bottom: 18px; }
.check-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; color: var(--text); font-size: 15px; }
.check-list li { display: flex; gap: 12px; align-items: flex-start; }
.check-list svg { flex: none; width: 20px; height: 20px; margin-top: 3px; stroke-width: 2.25; }
.do svg { color: var(--good); }
.dont svg { color: var(--bad); }
.note {
  display: flex; gap: 12px; align-items: flex-start; margin-top: 20px; padding: 18px 20px;
  border: 1px solid var(--border); border-radius: 12px; font-size: 15px; color: var(--muted);
}
.note svg { flex: none; width: 20px; height: 20px; margin-top: 3px; color: var(--blue-text); }

/* ===== 04 下载 ===== */
.download {
  display: grid; grid-template-columns: 1.15fr 1fr;
  border: 1px solid var(--border); border-radius: 16px; overflow: hidden; background: var(--card);
}
.download-main {
  padding: 40px;
  background: radial-gradient(120% 100% at 0% 0%, rgba(0, 92, 249, 0.16), rgba(0, 92, 249, 0) 60%);
}
.download-main h3 { margin-top: 20px; font-size: 26px; }
.download-meta { margin-top: 6px; font-size: 15px; color: var(--muted); }
.hash { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 24px; font-size: 13px; color: var(--muted); }
.hash span { font-family: var(--latin); font-weight: 600; letter-spacing: 1px; }
.hash code { word-break: break-all; color: var(--muted); }
.spec {
  display: grid; grid-template-columns: max-content 1fr; gap: 14px 24px; align-content: center;
  margin: 0; padding: 40px; border-left: 1px solid var(--border); font-size: 15px;
}
.spec dt { color: var(--muted); }
.spec dd { margin: 0; }
.tips { display: grid; gap: 20px; margin-top: 20px; }
.tip { padding: 24px 28px; border: 1px solid var(--border); border-radius: 12px; }
.tip h3 { font-size: 16px; margin-bottom: 6px; }
.tip p { font-size: 15px; color: var(--muted); }
.tip a { color: var(--blue-text); }
.tip a:hover { text-decoration: underline; }

/* SmartScreen 蓝框示意图：两步，黄框和序号标出要点的地方 */
.tip-ss { display: grid; grid-template-columns: 1fr auto; gap: 24px 40px; align-items: center; }
.ss { display: flex; align-items: center; gap: 12px; }
.ss-win {
  display: flex; flex-direction: column; width: 220px; min-height: 150px; padding: 14px 14px 12px;
  background: #1662B8; color: #FFFFFF; border-radius: 4px; box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  font-size: 12px; line-height: 1.5;
}
.ss-title { margin-bottom: 6px; font-size: 14px; font-weight: 600; }
.ss-text { color: rgba(255, 255, 255, 0.85); }
.ss-link { align-self: flex-start; margin-top: 6px; text-decoration: underline; }
.ss-btns { display: flex; justify-content: flex-end; gap: 6px; margin-top: auto; padding-top: 12px; }
.ss-btn { padding: 2px 10px; border: 1px solid rgba(255, 255, 255, 0.7); }
.ss-hit { position: relative; outline: 2px solid #F4D68A; outline-offset: 2px; }
.ss-hit::after {
  content: attr(data-n); position: absolute; top: -12px; right: -14px;
  width: 18px; height: 18px; border-radius: 50%; background: #F4D68A; color: #241B05;
  font: 700 11px/18px var(--latin); text-align: center; text-decoration: none;
}
.ss-arrow { flex: none; width: 20px; height: 20px; color: var(--muted); }

/* ===== 05 常见问题（浏览器自带的展开/收起，不用脚本） ===== */
.faq-layout { display: grid; grid-template-columns: 300px 1fr; gap: 64px; align-items: start; }
.faq-layout .section-head { margin-bottom: 0; }
.faq { border-top: 1px solid var(--border); }
.faq details { border-bottom: 1px solid var(--border); }
.faq summary {
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  min-height: 64px; padding: 16px 0; cursor: pointer; list-style: none;
  font-size: 17px; font-weight: 600; transition: color 0.2s;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary:hover { color: var(--blue-text); }
.faq summary::after {
  content: ""; flex: none; width: 9px; height: 9px; margin-right: 6px;
  border-right: 2px solid var(--muted); border-bottom: 2px solid var(--muted);
  transform: translateY(-3px) rotate(45deg); transition: transform 0.2s;
}
.faq details[open] summary::after { transform: translateY(2px) rotate(-135deg); }
.faq .answer { padding-bottom: 24px; color: var(--muted); }

/* ===== 结尾 ===== */
.cta { position: relative; overflow: hidden; padding: 128px 0; text-align: center; border-top: 1px solid var(--border); }
.cta::before {
  content: ""; position: absolute; z-index: -1; left: 50%; bottom: -320px; width: 1100px; height: 640px;
  transform: translateX(-50%); pointer-events: none;
  background: radial-gradient(closest-side, rgba(0, 92, 249, 0.2), rgba(0, 92, 249, 0));
}
.cta h2 { font-size: clamp(30px, 5vw, 52px); }

/* ===== 页脚 ===== */
.footer { padding: 56px 0 40px; border-top: 1px solid var(--border); font-size: 14px; color: var(--muted); }
.footer-top { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 20px 32px; }
.footer-top .brand { color: var(--text); }
.footer-links { display: flex; flex-wrap: wrap; gap: 12px 28px; }
.footer-links a { transition: color 0.2s; }
.footer-links a:hover { color: var(--text); }
.footer-notes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; margin-top: 40px; padding-top: 32px; border-top: 1px solid var(--border); }
.footer-notes h3 { margin-bottom: 6px; font-size: 14px; color: var(--text); }
.copyright { margin-top: 40px; font-size: 13px; }

/* ===== 404 页 ===== */
.notfound { position: relative; overflow: hidden; display: grid; place-items: center; min-height: calc(100vh - var(--header-h)); padding: 96px 0; text-align: center; }
.notfound::before {
  content: ""; position: absolute; z-index: -1; left: 50%; top: -260px; width: 1100px; height: 640px;
  transform: translateX(-50%); pointer-events: none;
  background: radial-gradient(closest-side, rgba(0, 92, 249, 0.22), rgba(0, 92, 249, 0));
}
.notfound .kicker { font-size: 18px; }
.notfound h1 { font-size: clamp(32px, 6vw, 56px); line-height: 1.2; letter-spacing: 2px; }

/* ===== 平板和手机 ===== */
@media (max-width: 1023px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
  .tip-ss { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .faq-layout { grid-template-columns: 1fr; gap: 40px; }
  .download { grid-template-columns: 1fr; }
  .spec { border-left: none; border-top: 1px solid var(--border); }
}
@media (max-width: 720px) {
  :root { --header-h: 60px; }
  .wrap { padding: 0 16px; }
  .top .wrap { gap: 16px; }
  .nav { display: none; }
  .top .btn { margin-left: auto; }
  .hero { padding: 72px 0 64px; }
  .hero-icon { width: 56px; height: 56px; margin-bottom: 22px; }
  .actions .btn { width: 100%; }
  .meta { display: flex; flex-wrap: wrap; justify-content: center; column-gap: 16px; }
  .meta span + span::before { display: none; }
  .shot { margin-top: 48px; border-radius: 8px; }
  .shot-bar { height: 26px; font-size: 10px; }
  .shot-bar svg { margin: 0 8px; }
  .section { padding: 80px 0; }
  .section-head { margin-bottom: 40px; }
  .grid, .steps, .safety, .footer-notes { grid-template-columns: 1fr; }
  .ss { flex-direction: column; }
  .ss-win { width: 100%; max-width: 300px; }
  .ss-arrow { transform: rotate(90deg); }
  .card, .tip { padding: 24px; }
  .download-main, .spec { padding: 28px 24px; }
  .cta { padding: 96px 0; }
}

/* ===== 滚动时内容轻轻浮现 =====
   跟着滚动进度走（浏览器自带的滚动驱动动画，不用脚本）；不支持的浏览器直接显示，不影响阅读。
   Windows 关了"动画效果"时不播放，平滑滚动也关掉。 */
@keyframes reveal { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: no-preference) {
  @supports (animation-timeline: view()) {
    .reveal { animation: reveal linear both; animation-timeline: view(); animation-range: entry 0% entry 60%; }
  }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn, .nav a, .faq summary, .faq summary::after, .footer-links a { transition: none; }
}