/* Cdnfly 官网前台样式（不影响 /console 后台） */

:root {
  color-scheme: light;
  --bg: #F6F9FB;
  --surface: #FFFFFF;
  --surface-2: #EDF4FA;
  --ink: #15222C;
  --ink-2: #51636F;
  --ink-3: #7A8B96;
  --line: #E1E9EF;
  --accent: #0A6ED1;
  --accent-ink: #085BAD;
  --accent-soft: #E3F0FC;
  --good: #178A4C;
  --good-soft: #E3F4EA;
  --bad: #D64545;
  --warn-bg: #FFF7E8;
  --warn-line: #F2DFB6;
  --warn-ink: #8A6116;
  --shadow: 0 1px 2px rgba(21,34,44,.04), 0 8px 24px rgba(21,34,44,.06);
  /* 外链箭头，用作 mask，SVG 自身颜色无意义（只取 alpha），故亮暗主题共用一份 */
  --ico-ext: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M8 5h11v11'/%3E%3Cpath d='M19 5L5 19'/%3E%3C/svg%3E");
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0E161D;
  --surface: #151F28;
  --surface-2: #1B2833;
  --ink: #E8EEF3;
  --ink-2: #A4B4BF;
  --ink-3: #7A8B96;
  --line: #24323D;
  --accent: #4DA3EC;
  --accent-ink: #7FBDF2;
  --accent-soft: #16293B;
  --good: #3FBE7B;
  --good-soft: #14301F;
  --bad: #E06B6B;
  --warn-bg: #2A2314;
  --warn-line: #4A3D1E;
  --warn-ink: #E0BE6E;
  --shadow: 0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.35);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    color-scheme: dark;
    --bg: #0E161D;
    --surface: #151F28;
    --surface-2: #1B2833;
    --ink: #E8EEF3;
    --ink-2: #A4B4BF;
    --ink-3: #7A8B96;
    --line: #24323D;
    --accent: #4DA3EC;
    --accent-ink: #7FBDF2;
    --accent-soft: #16293B;
    --good: #3FBE7B;
    --good-soft: #14301F;
    --bad: #E06B6B;
    --warn-bg: #2A2314;
    --warn-line: #4A3D1E;
    --warn-ink: #E0BE6E;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.35);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
.hidden { display: none !important; }

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

/* ---- 顶部声明条 ---- */
.notice {
  background: var(--warn-bg);
  border-bottom: 1px solid var(--warn-line);
  color: var(--warn-ink);
  font-size: 13px;
  text-align: center;
  padding: 7px 16px;
}
.notice strong { font-weight: 600; }

/* ---- 导航 ---- */
header.nav {
  position: sticky; top: 0; z-index: 50;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}
@supports (backdrop-filter: blur(10px)) {
  header.nav { background: color-mix(in srgb, var(--surface) 88%, transparent); backdrop-filter: blur(10px); }
}
.nav-inner { display: flex; align-items: center; gap: 12px; height: 60px; }
.logo { display: flex; align-items: center; gap: 9px; font-size: 19px; font-weight: 700; color: var(--ink); letter-spacing: .2px; }
.logo svg { display: block; }
.nav-links { display: flex; gap: 8px; margin-left: 28px; flex: 1; align-items: center; }
.nav-links > a, .dropdown > .drop-btn {
  color: var(--ink-2); font-size: 14.5px; padding: 6px 14px; border-radius: 8px;
  background: none; border: 0; cursor: pointer; font-family: inherit; line-height: inherit;
  display: inline-flex; align-items: center; gap: 4px; white-space: nowrap;
}
.nav-links > a:hover, .dropdown > .drop-btn:hover { color: var(--ink); background: var(--surface-2); }
.nav-links > a.current { color: var(--accent); font-weight: 600; }
.drop-btn .caret { width: 0; height: 0; border-left: 4px solid transparent; border-right: 4px solid transparent; border-top: 5px solid currentColor; opacity: .55; margin-top: 2px; }

.dropdown { position: relative; }
.dropdown .menu {
  display: none; position: absolute; top: calc(100% + 6px); left: 0; min-width: 230px;
  background: var(--surface); border: 1px solid var(--line); border-radius: 12px;
  box-shadow: var(--shadow); padding: 6px; z-index: 60;
}
.dropdown.open .menu { display: block; }
@media (hover: hover) and (pointer: fine) {
  .dropdown:hover > .menu { display: block; }
  /* 填补按钮与菜单之间 6px 的空隙，避免鼠标移过去时菜单收起 */
  .dropdown:hover::after {
    content: ""; position: absolute; top: 100%; left: 0; right: 0; height: 8px;
  }
}
.dropdown .menu a {
  display: block; padding: 8px 12px; border-radius: 8px; color: var(--ink-2); font-size: 14px;
}
.dropdown .menu a:hover { background: var(--surface-2); color: var(--ink); }

/* 外链标记：站内链接均为相对路径，[href^="http"] 即离站链接 */
.nav-links a[href^="http"]:not([href*="//cdnfly.com"]):not([href*="//www.cdnfly.com"])::after {
  content: "";
  width: 11px; height: 11px;
  flex: none;
  background-color: currentColor;
  opacity: .45;
  -webkit-mask: var(--ico-ext) no-repeat center / contain;
  mask: var(--ico-ext) no-repeat center / contain;
}
.nav-links a[href^="http"]:hover::after { opacity: .7; }
/* 下拉里文字左、箭头贴右；登录态菜单（管理后台/退出）为站内链接，不受影响 */
.dropdown .menu a[href^="http"] {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
}
/* 桌面端菜单是绝对定位、宽度被 .dropdown 的收缩上限压到 min-width，无法自行变宽，
   故把箭头占掉的 21px 补回来，否则合作站名会换行。只放宽主导航的下拉；
   限定 981px 以上，避免盖掉移动端把菜单降级为静态列表时的 min-width: 0。 */
@media (min-width: 981px) {
  .nav-links .dropdown .menu { min-width: 256px; }
}

.nav-actions { display: flex; gap: 10px; align-items: center; }

.theme-toggle {
  display: inline-flex; align-items: center; justify-content: center; flex: none;
  width: 38px; height: 38px; padding: 0;
  color: var(--ink-2); background: var(--surface);
  border: 1px solid var(--line); border-radius: 9px;
  cursor: pointer; transition: color .15s, background-color .15s, border-color .15s;
}
.theme-toggle:hover { color: var(--accent); border-color: var(--accent); background: var(--accent-soft); }
.theme-toggle svg { display: block; width: 19px; height: 19px; }
.theme-toggle .theme-icon-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .theme-icon-moon { display: none; }
:root[data-theme="dark"] .theme-toggle .theme-icon-sun { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .theme-toggle .theme-icon-moon { display: none; }
  :root:not([data-theme]) .theme-toggle .theme-icon-sun { display: block; }
}

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border-radius: 10px; font-size: 15px; font-weight: 600; padding: 10px 20px;
  border: 1px solid transparent; cursor: pointer; transition: background .15s, border-color .15s;
  white-space: nowrap; font-family: inherit;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-ink); color: #fff; }
.btn-ghost { border-color: var(--line); color: var(--ink); background: var(--surface); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-sm { padding: 7px 15px; font-size: 14px; border-radius: 8px; }
.btn-block { width: 100%; }

/* 移动端菜单按钮 */
.nav-toggle {
  display: none; background: none; border: 1px solid var(--line); border-radius: 8px;
  width: 38px; height: 38px; cursor: pointer; color: var(--ink);
  align-items: center; justify-content: center; flex-direction: column; gap: 5px;
}
.nav-toggle span { display: block; width: 18px; height: 2px; background: currentColor; border-radius: 2px; }

/* ---- 首屏 ---- */
.hero {
  background:
    radial-gradient(1200px 420px at 75% -60px, var(--accent-soft), transparent 70%),
    var(--surface);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.hero-inner {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center;
  padding: 72px 0 64px;
}
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 600; color: var(--accent);
  background: var(--accent-soft); border-radius: 999px; padding: 4px 14px;
  margin-bottom: 18px;
}
.eyebrow .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--good); }
h1 {
  font-size: clamp(1.9rem, 3.8vw, 2.8rem); line-height: 1.25; margin: 0 0 16px;
  font-weight: 700; letter-spacing: .5px; text-wrap: balance;
}
h1 .em { color: var(--accent); }
.hero p.sub { color: var(--ink-2); font-size: 17px; max-width: 30em; margin: 0 0 28px; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 20px; }
.demo-cred {
  display: inline-flex; flex-wrap: wrap; gap: 6px 14px; align-items: center;
  font-size: 13px; color: var(--ink-3);
}
.demo-cred code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  background: var(--surface-2); border: 1px solid var(--line);
  border-radius: 6px; padding: 1px 8px; color: var(--ink-2); font-size: 12.5px;
}
.hero-visual { position: relative; }
.hero-visual canvas {
  display: block; width: 100%; height: auto;
  border: 1px solid var(--line); border-radius: 16px;
  background: var(--surface); box-shadow: var(--shadow);
}
.visual-caption {
  display: flex; gap: 18px; justify-content: center; margin-top: 12px;
  font-size: 12.5px; color: var(--ink-3);
}
.visual-caption span { display: inline-flex; align-items: center; gap: 6px; }
.visual-caption i { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }

/* ---- 通用区块 ---- */
section { padding: 72px 0; }
.sec-head { max-width: 620px; margin: 0 auto 44px; text-align: center; }
.sec-head .tag { color: var(--accent); font-size: 14px; font-weight: 600; letter-spacing: 2px; }
.sec-head h1, .sec-head h2 { font-size: clamp(1.5rem, 2.6vw, 2rem); line-height: 1.35; margin: 8px 0 10px; font-weight: 700; letter-spacing: 0; text-wrap: balance; }
.sec-head p { color: var(--ink-2); margin: 0; }
.page-head { padding: 32px 0 0; }
.page-head .sec-head { margin-bottom: 0; }

/* 功能网格 */
.feat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.feat {
  background: var(--surface); border: 1px solid var(--line); border-radius: 14px;
  padding: 24px; transition: border-color .15s, transform .15s;
}
.feat:hover { border-color: var(--accent); transform: translateY(-2px); }
.feat .ico {
  width: 40px; height: 40px; border-radius: 10px; background: var(--accent-soft);
  display: flex; align-items: center; justify-content: center; margin-bottom: 14px;
  color: var(--accent);
}
.feat h3 { font-size: 16.5px; margin: 0 0 8px; font-weight: 600; }
.feat ul { margin: 0; padding: 0; list-style: none; color: var(--ink-2); font-size: 14px; line-height: 1.75; }
.feat li { padding-left: 16px; position: relative; }
.feat li::before { content: ""; position: absolute; left: 2px; top: .72em; width: 5px; height: 5px; border-radius: 50%; background: var(--accent); opacity: .55; }
.feat.hi { border-color: color-mix(in srgb, var(--accent) 45%, var(--line)); background: linear-gradient(180deg, var(--accent-soft), var(--surface) 55%); }

/* WAF 专区 */
.eyebrow-row { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 18px; }
.eyebrow-row .eyebrow { margin-bottom: 0; }
.eyebrow.new { background: var(--good-soft); color: var(--good); }
.waf-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; align-items: stretch; }
.waf-panel {
  background: var(--surface); border: 1px solid var(--line); border-radius: 16px;
  padding: 26px 28px;
}
.waf-panel h3 { margin: 0 0 14px; font-size: 16.5px; display: flex; align-items: center; gap: 9px; }
.waf-panel h3 svg { color: var(--accent); flex: none; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  font-size: 13.5px; padding: 5px 13px; border-radius: 999px;
  background: var(--accent-soft); color: var(--accent-ink); font-weight: 500;
  white-space: nowrap;
}
.waf-points { display: flex; flex-direction: column; gap: 14px; margin: 0; padding: 0; list-style: none; }
.waf-points li { display: flex; gap: 12px; align-items: flex-start; }
.waf-points .p-ico {
  flex: none; width: 34px; height: 34px; border-radius: 9px;
  background: var(--accent-soft); color: var(--accent);
  display: flex; align-items: center; justify-content: center; margin-top: 2px;
}
.waf-points b { display: block; font-size: 15px; font-weight: 600; }
.waf-points span { color: var(--ink-2); font-size: 14px; }
.waf-links { margin-top: 16px; font-size: 14px; color: var(--ink-3); }
.waf-links a { margin-right: 16px; }
@media (max-width: 900px) {
  .waf-grid { grid-template-columns: 1fr; }
}

/* WAF 常见问题 */
.faq-sec { background: var(--surface); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.faq-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.faq-item {
  background: var(--bg); border: 1px solid var(--line); border-radius: 14px;
  padding: 24px 26px;
}
.faq-item h3 { margin: 0 0 8px; font-size: 16.5px; font-weight: 600; }
.faq-item p { margin: 0; color: var(--ink-2); font-size: 14.5px; }

/* 步骤 */
.steps-sec { background: var(--surface); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; counter-reset: step; }
.step { background: var(--bg); border: 1px solid var(--line); border-radius: 14px; padding: 26px; position: relative; }
.step::before {
  counter-increment: step; content: counter(step);
  display: flex; align-items: center; justify-content: center;
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--accent); color: #fff; font-weight: 700; font-size: 15px;
  margin-bottom: 14px;
}
.step h3 { margin: 0 0 6px; font-size: 16.5px; }
.step p { margin: 0; color: var(--ink-2); font-size: 14.5px; }

/* CTA 横幅 */
.cta-band {
  background: linear-gradient(120deg, var(--accent), var(--accent-ink));
  border-radius: 20px; padding: 52px 48px; color: #fff;
  display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap;
}
.cta-band h2 { margin: 0 0 8px; font-size: clamp(1.4rem, 2.4vw, 1.8rem); color: #fff; }
.cta-band p { margin: 0; opacity: .85; font-size: 15px; }
.cta-band .btns { display: flex; gap: 12px; flex-wrap: wrap; }
.btn-white { background: #fff; color: #085BAD; }
.btn-white:hover { background: #EAF3FC; color: #085BAD; }
.btn-line { border-color: rgba(255,255,255,.55); color: #fff; }
.btn-line:hover { border-color: #fff; background: rgba(255,255,255,.1); color: #fff; }

/* ---- 价格卡片（购买授权页） ---- */
.price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.price-card {
  background: var(--surface); border: 1px solid var(--line); border-radius: 16px;
  padding: 26px; display: flex; flex-direction: column; gap: 4px;
  transition: border-color .15s, transform .15s;
}
.price-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.price-card.hi { border-color: color-mix(in srgb, var(--accent) 45%, var(--line)); background: linear-gradient(180deg, var(--accent-soft), var(--surface) 45%); }
.price-card .tier { font-size: 15px; font-weight: 700; letter-spacing: 1px; color: var(--accent); display: flex; align-items: center; gap: 8px; }
.price-card .tier .pill {
  font-size: 11.5px; font-weight: 600; letter-spacing: 0; color: var(--good);
  background: var(--good-soft); border-radius: 999px; padding: 1px 9px;
}
.price-card .nodes { font-size: 26px; font-weight: 700; margin: 6px 0 2px; font-variant-numeric: tabular-nums; }
.price-card .nodes small { font-size: 14px; font-weight: 500; color: var(--ink-2); }
.price-card .plist { margin: 10px 0 18px; padding: 0; list-style: none; font-size: 14.5px; color: var(--ink-2); flex: 1; }
.price-card .plist li {
  display: flex; justify-content: space-between; gap: 12px;
  padding: 7px 0; border-bottom: 1px dashed var(--line);
  font-variant-numeric: tabular-nums;
}
.price-card .plist li:last-child { border-bottom: 0; }
.price-card .plist b { color: var(--ink); font-weight: 600; white-space: nowrap; }

/* 所有等级均含的功能清单 */
.incl-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px 16px; }
.incl {
  display: flex; align-items: center; gap: 9px; font-size: 14.5px; color: var(--ink-2);
  background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 10px 14px;
}
.incl svg { flex: none; color: var(--good); }

/* 说明卡片 */
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: 16px;
  padding: 28px 30px; box-shadow: var(--shadow);
}
.card + .card { margin-top: 16px; }
.card h3 { margin: 0 0 12px; font-size: 17px; display: flex; align-items: center; gap: 9px; }
.card h3 svg { color: var(--accent); flex: none; }
.card p, .card ol, .card ul { margin: 0; color: var(--ink-2); font-size: 15px; }
.card ol { padding-left: 20px; }
.card ol li { margin: 4px 0; }
.card .kv { display: grid; grid-template-columns: auto 1fr; gap: 6px 18px; font-size: 15px; }
.card .kv .k { color: var(--ink-3); white-space: nowrap; }
.card .kv .v { color: var(--ink); }

/* ---- 文本输入框 ---- */
.text-input {
  width: 100%; padding: 12px 16px; font-size: 16px; font-family: inherit;
  color: var(--ink); background: var(--surface); border: 1px solid var(--line);
  border-radius: 10px; outline: none; transition: border-color .15s, box-shadow .15s;
}
.text-input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.text-input::placeholder { color: var(--ink-3); }
.form-row { display: flex; gap: 10px; }
.form-row .text-input { flex: 1; }
.form-hint { margin-top: 10px; font-size: 14px; color: var(--ink-3); }
.form-error { margin-top: 10px; font-size: 14px; color: var(--bad); }

/* ---- 更新日志时间线 ---- */
.timeline { position: relative; margin: 0; padding: 0 0 0 26px; list-style: none; }
.timeline::before {
  content: ""; position: absolute; left: 6px; top: 8px; bottom: 8px;
  width: 2px; background: var(--line); border-radius: 2px;
}
.tl-item { position: relative; padding: 0 0 36px; }
.tl-item:last-child { padding-bottom: 4px; }
.tl-item::before {
  content: ""; position: absolute; left: -26px; top: 7px;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--surface); border: 3px solid var(--accent);
}
.tl-item.upcoming::before { background: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); }
.tl-title { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; margin: 0 0 10px; }
.tl-title h3 { margin: 0; font-size: 17.5px; font-weight: 700; }
.tl-title .date { color: var(--ink-3); font-size: 13.5px; font-variant-numeric: tabular-nums; }
.tl-title .badge {
  font-size: 12px; font-weight: 600; color: var(--accent);
  background: var(--accent-soft); border-radius: 999px; padding: 1px 10px;
}
.tl-body {
  background: var(--surface); border: 1px solid var(--line); border-radius: 14px;
  padding: 18px 22px; color: var(--ink-2); font-size: 14.5px; line-height: 1.85;
  overflow-wrap: break-word;
}
.tl-loading { color: var(--ink-3); font-size: 14.5px; padding-left: 2px; }

/* ---- 页脚 ---- */
footer.site-foot {
  border-top: 1px solid var(--line); background: var(--surface);
  padding: 36px 0 40px; color: var(--ink-3); font-size: 13.5px;
  margin-top: 72px;
}
.no-foot-gap footer.site-foot { margin-top: 0; }
.foot-inner { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; align-items: center; }
.foot-links { display: flex; gap: 20px; flex-wrap: wrap; }
.foot-links a { color: var(--ink-3); }
.foot-links a:hover { color: var(--accent); }
.beian a { color: var(--ink-3); }
.beian img { width: 15px; vertical-align: -2px; }

/* ---- 响应式 ---- */
@media (max-width: 980px) {
  .incl-grid { grid-template-columns: repeat(3, 1fr); }
  .price-grid { grid-template-columns: repeat(2, 1fr); }
  .nav-toggle { display: flex; }
  .nav-links {
    display: none; position: absolute; top: 60px; left: 0; right: 0;
    background: var(--surface); border-bottom: 1px solid var(--line);
    flex-direction: column; align-items: stretch; padding: 10px 16px 16px; gap: 2px;
    box-shadow: var(--shadow); margin-left: 0;
  }
  .nav-links.open { display: flex; }
  .nav-links > a, .dropdown > .drop-btn { width: 100%; padding: 10px 12px; font-size: 15px; }
  .dropdown .menu { position: static; box-shadow: none; border: 0; padding: 0 0 4px 16px; min-width: 0; }
}
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; padding: 48px 0 44px; }
  .feat-grid, .steps { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 620px) {
  .feat-grid, .steps, .price-grid, .incl-grid, .faq-grid { grid-template-columns: 1fr; }
  .cta-band { padding: 36px 28px; }
  section { padding: 52px 0; }
  .nav-actions .btn-ghost { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .feat, .feat:hover, .price-card, .price-card:hover { transform: none; transition: none; }
}

/* GinCdn 首页补充样式 */
.logo img { width: 26px; height: 26px; object-fit: contain; border-radius: 7px; }
.logo span { display: inline-block; }
.hero { background: linear-gradient(135deg, #10283f 0%, #16466c 58%, #0a6ed1 140%); }
.hero::before { opacity: .7; }
.hero h1 { letter-spacing: -.04em; }
.hero .demo-cred code { color: #d8ebfb; background: rgba(0, 0, 0, .18); border-color: rgba(255,255,255,.12); }
.hero .btn-primary { color: #123552; background: #fff; }
.hero .btn-primary:hover { color: #123552; background: #eaf4fc; }
.hero .btn-ghost { color: #e2f2ff; background: transparent; border-color: rgba(255,255,255,.48); }
.hero .btn-ghost:hover { color: #fff; background: rgba(255,255,255,.1); border-color: #fff; }
.network-card { position: relative; min-height: 350px; padding: 28px; background: rgba(7, 28, 49, .56); border: 1px solid rgba(188, 225, 252, .2); border-radius: 20px; box-shadow: 0 24px 60px rgba(0,14,28,.28), inset 0 1px 0 rgba(255,255,255,.08); backdrop-filter: blur(8px); }
.network-card::after { position: absolute; top: 22px; right: 22px; width: 8px; height: 8px; background: #63d596; border-radius: 50%; box-shadow: 0 0 0 5px rgba(99,213,150,.14), 0 0 20px rgba(99,213,150,.75); content: ""; }
.network-label { margin-bottom: 24px; color: #9bbbd4; font-size: 12px; letter-spacing: .18em; text-transform: uppercase; }
.network-flow { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 10px; align-items: center; min-height: 230px; }
.flow-column { display: grid; gap: 14px; }
.flow-column.center { gap: 12px; }
.flow-node { position: relative; padding: 14px 10px; color: #dceeff; background: rgba(255,255,255,.07); border: 1px solid rgba(194,225,246,.16); border-radius: 12px; text-align: center; font-size: 12px; font-weight: 700; }
.flow-node small { display: block; margin-top: 4px; color: #8eabc0; font-size: 10px; font-weight: 400; }
.flow-node.core { color: #fff; background: linear-gradient(135deg, rgba(10,110,209,.86), rgba(52,154,225,.52)); border-color: rgba(145,211,255,.45); box-shadow: 0 10px 24px rgba(10,110,209,.2); }
.flow-node.safe { color: #a9edc5; border-color: rgba(99,213,150,.26); }
.flow-node.blocked { color: #ffb6b6; border-color: rgba(255,145,145,.24); }
.flow-line { height: 1px; background: linear-gradient(90deg, transparent, rgba(125,207,255,.72), transparent); }
.flow-line::after { display: block; width: 8px; height: 8px; margin-top: -4px; margin-left: 28%; background: #8ed8ff; border-radius: 50%; box-shadow: 0 0 14px rgba(142,216,255,.9); content: ""; animation: flowPulse 2.8s ease-in-out infinite; }
.flow-column:last-child .flow-line::after { margin-left: 58%; animation-delay: .7s; }
@keyframes flowPulse { 0%,100% { opacity: .2; transform: translateX(0); } 45%,55% { opacity: 1; transform: translateX(48px); } }
.network-caption { display: flex; justify-content: space-between; gap: 12px; margin-top: 18px; color: #9eb6ca; font-size: 11px; }
.network-caption span { display: inline-flex; align-items: center; gap: 6px; }
.network-caption i { width: 7px; height: 7px; border-radius: 50%; }
.pricing { background: var(--surface); }
.pricing-intro { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 32px; }
.pricing-intro .sec-head { margin: 0; text-align: left; }
.pricing-note { max-width: 340px; padding: 12px 14px; color: var(--ink-2); background: var(--surface-2); border: 1px solid var(--line); border-radius: 10px; font-size: 13px; }
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.price-card { min-height: 100%; }
.price-card.hi { box-shadow: 0 15px 38px rgba(10,110,209,.14); }
.price-card .summary { margin: 4px 0 10px; color: var(--ink-2); font-size: 13px; }
.price-card .plist { margin-top: 2px; }
.price-card .plist li { padding: 8px 0; }
.price-card .plist b.accent { color: var(--accent); }
.price-card .plist b.unsupported { color: var(--ink-3); }
.price-card .price-action { width: 100%; margin-top: auto; }
.demo-section { background: var(--bg); }
.demo-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.demo-card { padding: 28px; background: var(--surface); border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow); transition: border-color .15s, transform .15s; }
.demo-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.demo-card-head { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.demo-icon { display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; color: var(--accent); background: var(--accent-soft); border-radius: 10px; }
.demo-card h3 { margin: 0; font-size: 17px; }
.demo-link { display: block; overflow-wrap: anywhere; margin-bottom: 16px; padding: 11px 13px; color: var(--accent); background: var(--surface-2); border: 1px solid var(--line); border-radius: 8px; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 13px; }
.demo-account { display: grid; grid-template-columns: 72px 1fr; gap: 7px 10px; margin: 0; font-size: 13px; }
.demo-account dt { color: var(--ink-3); }
.demo-account dd { margin: 0; color: var(--ink); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.contact { background: var(--surface); border-top: 1px solid var(--line); }
.contact-form { max-width: 760px; margin: 0 auto; padding: 30px; background: var(--surface); border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow); }
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.form-group { margin-bottom: 18px; }
.form-group.full { grid-column: 1 / -1; }
.form-group label { display: block; margin-bottom: 7px; color: var(--ink); font-size: 13px; font-weight: 700; }
.form-group input, .form-group textarea { width: 100%; padding: 11px 13px; color: var(--ink); background: var(--surface); border: 1px solid var(--line); border-radius: 8px; font: inherit; font-size: 14px; }
.form-group textarea { min-height: 140px; resize: vertical; }
.form-btn { min-width: 126px; padding: 11px 22px; color: #fff; background: var(--accent); border: 0; border-radius: 8px; font-size: 14px; font-weight: 700; cursor: pointer; }
.form-btn:hover { background: var(--accent-ink); }
.footer-column p { max-width: 270px; margin: 0; color: var(--ink-2); font-size: 14px; }
.footer-column ul { margin: 0; padding: 0; list-style: none; }
.footer-column li { margin: 6px 0; color: var(--ink-2); font-size: 14px; }
.footer-column li i { width: 16px; color: var(--accent); }
@media (max-width: 960px) { .hero-inner { grid-template-columns: 1fr; gap: 42px; } .features-grid, .services-grid, .pricing-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 720px) { .pricing-intro { display: block; } .pricing-note { max-width: none; margin-top: 18px; } .features-grid, .services-grid, .pricing-grid, .demo-grid, .form-grid { grid-template-columns: 1fr; } .form-group.full { grid-column: auto; } .contact-form, .demo-card { padding: 22px; } .network-card { min-height: 300px; padding: 20px; } .network-flow { gap: 6px; } }
.hero h1 { color: #fff; }
.hero p.sub { color: #c6d7e6; }

/* GinCdn ???????? */
body { overflow-x: hidden; }
header.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}
.nav-inner { min-width: 0; }
.nav-btn { flex: none; }

.feature-card p,
.service-card p {
  margin: 0;
  color: var(--ink-2);
  font-size: 14px;
  line-height: 1.75;
}
.feature-icon,
.service-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  margin-bottom: 14px;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 10px;
}
.service-icon { width: 40px; height: 40px; }
.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.service-card {
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  transition: border-color .15s, transform .15s;
}
.service-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.service-card h3 { margin: 0 0 8px; font-size: 16.5px; font-weight: 600; }

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr repeat(3, 1fr);
  gap: 28px;
}
.footer-column h3 { margin: 0 0 12px; color: var(--ink); font-size: 16px; }
.footer-column a { color: var(--ink-2); }
.footer-column a:hover { color: var(--accent); }
.footer-bottom {
  margin-top: 30px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--ink-3);
  font-size: 13px;
}
.footer-bottom p { margin: 0; }

/* ????????????????????????????? */
.hero-inner { padding-left: 24px; padding-right: 24px; }
.hero-inner > * { min-width: 0; }
.hero p.sub { max-width: 100%; }
.network-flow { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1fr); }
.flow-column,
.flow-node { min-width: 0; }
.flow-node { overflow-wrap: anywhere; }
.network-caption { flex-wrap: wrap; }

@media (max-width: 960px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
  .hero-inner { padding: 48px 24px 44px; }
}
@media (max-width: 620px) {
  .services-grid,
  .footer-grid { grid-template-columns: 1fr; }
  .network-card { padding: 20px; }
  .network-flow { gap: 6px; }
  .flow-node { padding: 12px 6px; font-size: 11px; }
  .flow-node small { font-size: 9px; }
  .network-caption { justify-content: flex-start; }
}

/* ==========================================================================
   GinCdn 视觉增强层（纯 CSS，不触碰任何页面逻辑）
   —— 设计语言：品牌蓝单主色 + 真深色 Hero + 细腻景深 + 有目的的动效
   渐进增强：滚动入场依赖 animation-timeline，不支持的环境自动无动画降级。
   ========================================================================== */

:root {
  /* 显示字体：西文数字优先用 Space Grotesk，中文字符自动回退系统中文字体 */
  --gx-display: "Space Grotesk", "Outfit", ui-sans-serif, -apple-system, BlinkMacSystemFont,
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  --gx-accent-2: #2f93f2;                      /* accent 的亮端，用于渐变/光晕 */
  --gx-accent-3: #21c7d6;                      /* 冷青，用于 hero 标题渐变点缀 */
  --gx-ease: cubic-bezier(.22, .61, .36, 1);
  --gx-shadow-sm: 0 1px 2px rgba(21,34,44,.05), 0 4px 14px rgba(21,34,44,.07);
  --gx-shadow-md: 0 2px 4px rgba(21,34,44,.05), 0 14px 34px rgba(21,34,44,.12);
  --gx-shadow-glow: 0 10px 30px -6px color-mix(in srgb, var(--accent) 55%, transparent);
  --gx-grid: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='64' height='64' viewBox='0 0 64 64'%3E%3Cpath d='M64 0H0V64' fill='none' stroke='rgba(255,255,255,0.045)' stroke-width='1'/%3E%3C/svg%3E");
  --gx-noise: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)' opacity='0.055'/%3E%3C/svg%3E");
}

/* 文本选区与滚动条，小处见精致 */
::selection { background: color-mix(in srgb, var(--accent) 26%, transparent); color: var(--ink); }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: color-mix(in srgb, var(--ink-3) 45%, transparent); border-radius: 999px; border: 2px solid transparent; background-clip: content-box; }
::-webkit-scrollbar-thumb:hover { background-color: var(--ink-3); background-clip: content-box; }
::-webkit-scrollbar-track { background: transparent; }

html { scroll-padding-top: 74px; }

body {
  background-image: radial-gradient(1200px 520px at 50% -180px, color-mix(in srgb, var(--accent-soft) 70%, transparent), transparent 70%);
  background-repeat: no-repeat;
}
@media (prefers-color-scheme: dark) {
  body { background-image: radial-gradient(1200px 520px at 50% -180px, rgba(77,163,236,.10), transparent 70%); }
}

/* ---- 标题字体统一 ---- */
h1, h2, h3, .logo, .tier, .tag, .price-card .nodes, .demo-account dd, .nav-links .btn {
  font-family: var(--gx-display);
}
h1, h2 { text-wrap: balance; }

/* ---- 顶部声明条 —— 渐变描边 ---- */
.notice {
  position: relative;
  background: linear-gradient(90deg, var(--warn-bg), color-mix(in srgb, var(--warn-bg) 60%, var(--accent-soft)), var(--warn-bg));
}

/* ---- 导航：选中下划线动效 ---- */
header.header {
  transition: box-shadow .3s var(--gx-ease), background-color .3s;
}
.nav-links > a { position: relative; transition: color .2s var(--gx-ease), background-color .2s; }
.nav-links > a::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 2px; height: 2px;
  border-radius: 2px; background: var(--accent);
  transform: scaleX(0); transform-origin: left; transition: transform .25s var(--gx-ease);
}
.nav-links > a:hover::after, .nav-links > a.current::after { transform: scaleX(1); }
.nav-links > a.current { color: var(--accent); }
.nav-btn { box-shadow: var(--gx-shadow-glow); }

/* ---- 按钮：渐变 + 浮起 + 细腻扫光 ---- */
.btn { position: relative; overflow: hidden; transition: transform .22s var(--gx-ease), box-shadow .22s, background-color .22s, border-color .22s, color .22s; }
.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, var(--gx-accent-2) 100%);
  box-shadow: var(--gx-shadow-glow);
}
.btn-primary:hover { background: linear-gradient(135deg, var(--gx-accent-2), var(--accent)); transform: translateY(-2px); box-shadow: 0 14px 34px -6px color-mix(in srgb, var(--accent) 70%, transparent); }
.btn-ghost:hover { transform: translateY(-2px); box-shadow: var(--gx-shadow-sm); }
.btn::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(105deg, transparent 30%, rgba(255,255,255,.38) 50%, transparent 70%);
  transform: translateX(-120%); transition: transform .6s var(--gx-ease);
}
.btn:hover::after { transform: translateX(120%); }
.btn-sm::after { display: none; }

/* ---- Hero：真深色、网格 + 噪点 + 光晕，元素入场 stagger ---- */
.hero {
  position: relative;
  background:
    radial-gradient(900px 420px at 78% -140px, rgba(47,147,242,.34), transparent 62%),
    radial-gradient(700px 380px at -6% 118%, rgba(33,199,214,.15), transparent 60%),
    var(--gx-grid),
    linear-gradient(140deg, #0b1c2e 0%, #12344f 55%, #0a3f74 115%);
}
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: var(--gx-noise);
  mix-blend-mode: overlay; opacity: .55;
}
.hero-inner { position: relative; z-index: 1; }
.hero .eyebrow-row,
.hero h1,
.hero p.sub,
.hero-cta,
.demo-cred {
  animation: heroRise .7s var(--gx-ease) both;
}
.hero .eyebrow-row { animation-delay: .05s; }
.hero h1 { animation-delay: .14s; }
.hero p.sub { animation-delay: .24s; }
.hero-cta { animation-delay: .34s; }
.demo-cred { animation-delay: .44s; }
@keyframes heroRise { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }
.hero h1 .em {
  background: linear-gradient(96deg, #eaf4ff 0%, var(--gx-accent-2) 55%, var(--gx-accent-3) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero .eyebrow.new { box-shadow: 0 4px 14px -4px color-mix(in srgb, var(--good) 45%, transparent); white-space: nowrap; }

/* ---- 网络示意图卡：玻璃质感加强 ---- */
.network-card {
  background: linear-gradient(165deg, rgba(10,32,56,.72), rgba(7,22,37,.62));
  border-color: rgba(148,200,246,.24);
  box-shadow: 0 30px 70px -18px rgba(0,12,26,.55), inset 0 1px 0 rgba(255,255,255,.09);
  transition: transform .35s var(--gx-ease), box-shadow .35s;
}
.network-card:hover { transform: translateY(-4px); box-shadow: 0 40px 90px -20px rgba(0,12,26,.6), 0 0 0 1px rgba(122,190,250,.18) inset, 0 0 60px -18px rgba(47,147,242,.35); }
.flow-node { transition: transform .22s var(--gx-ease), box-shadow .22s, border-color .22s; }
.flow-node:hover { transform: translateY(-2px); }
.flow-node.core { animation: nodeGlow 3.2s ease-in-out infinite; }
@keyframes nodeGlow { 0%,100% { box-shadow: 0 10px 24px rgba(10,110,209,.25); } 50% { box-shadow: 0 10px 30px rgba(47,147,242,.5); } }

/* ---- 区块标题：tag 胶囊 + 前置指示点 ---- */
.sec-head .tag {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 5px 14px; border-radius: 999px;
  background: color-mix(in srgb, var(--accent-soft) 80%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 22%, transparent);
  letter-spacing: .14em; text-transform: uppercase;
}
.sec-head .tag::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 10px var(--accent); }
.sec-head h2 { letter-spacing: -.02em; }

/* ---- 卡片统一：更深的浮起与顶部光条 ---- */
.feature-card, .service-card, .demo-card {
  position: relative; overflow: hidden;
  transition: transform .28s var(--gx-ease), box-shadow .28s, border-color .28s;
}
.feature-card::before, .service-card::before, .demo-card::before, .price-card::before {
  content: ""; position: absolute; top: 0; left: 14%; right: 14%; height: 1px;
  background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--accent) 55%, transparent), transparent);
  opacity: 0; transition: opacity .28s;
}
.feature-card:hover, .service-card:hover, .demo-card:hover {
  transform: translateY(-5px);
  border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
  box-shadow: var(--gx-shadow-md);
}
.feature-card:hover::before, .service-card:hover::before, .demo-card:hover::before,
.price-card:hover::before, .price-card.hi::before { opacity: 1; }

/* 图标容器：hover 上浮换色 */
.feature-icon, .service-icon, .demo-icon, .feat .ico, .waf-points .p-ico {
  transition: transform .26s var(--gx-ease), background-color .26s, box-shadow .26s, color .26s;
}
.feature-card:hover .feature-icon, .service-card:hover .service-icon, .feat:hover .ico {
  transform: translateY(-3px) scale(1.06);
  background: color-mix(in srgb, var(--accent-soft) 70%, transparent);
  color: var(--accent);
  box-shadow: 0 8px 20px -6px color-mix(in srgb, var(--accent) 45%, transparent);
}

/* ---- 价格卡片：Hi 卡顶部渐变条 + 品牌数字 ---- */
.price-card.hi {
  position: relative;
  border-color: color-mix(in srgb, var(--accent) 55%, var(--line));
  background: linear-gradient(180deg, var(--accent-soft), var(--surface) 55%);
  box-shadow: 0 18px 44px -14px color-mix(in srgb, var(--accent) 40%, transparent);
  transform: translateY(-4px);
}
.price-card.hi:hover { transform: translateY(-7px); box-shadow: 0 24px 54px -16px color-mix(in srgb, var(--accent) 55%, transparent); }
.price-card .tier { letter-spacing: .08em; }
.price-card .plist b { font-family: var(--gx-display); font-variant-numeric: tabular-nums; }
.price-card .summary { color: var(--ink-2); }
.price-card .price-action { box-shadow: none; }

/* ---- 演示与联系：精致留白与焦点态 ---- */
.demo-link { transition: border-color .2s, box-shadow .2s, transform .2s var(--gx-ease); }
.demo-link:hover { border-color: color-mix(in srgb, var(--accent) 50%, var(--line)); box-shadow: var(--gx-shadow-sm); transform: translateY(-1px); }
.form-group input, .form-group textarea, .text-input {
  transition: border-color .2s, box-shadow .2s, background-color .2s;
}
.form-group input:focus, .form-group textarea:focus, .text-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 16%, transparent);
}
.form-btn { transition: transform .22s var(--gx-ease), box-shadow .22s, background-color .22s; }
.form-btn:hover { transform: translateY(-2px); background: linear-gradient(135deg, var(--accent), var(--gx-accent-2)); box-shadow: var(--gx-shadow-glow); }

/* ---- 页脚：深色底座 + 顶部渐变线 ---- */
footer.site-foot {
  position: relative;
  background: linear-gradient(180deg, var(--surface), color-mix(in srgb, var(--surface-2) 55%, var(--surface)));
}
footer.site-foot::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--accent) 60%, transparent), transparent);
}
.footer-column a { transition: color .2s, padding-left .2s var(--gx-ease); }
.footer-column a:hover { padding-left: 3px; }

/* ---- 滚动入场（渐进增强：支持 animation-timeline 的浏览器生效，其余无动画） ---- */
@supports (animation-timeline: view()) {
  .sec-head, .feat, .service-card, .price-card, .demo-card, .contact-form,
  .features-grid > .feat, .services-grid > .service-card, .price-grid > .price-card, .demo-grid > .demo-card {
    animation: scrollReveal .9s var(--gx-ease) both;
    animation-timeline: view();
    animation-range: entry 4% entry 34%;
  }
  @keyframes scrollReveal {
    from { opacity: 0; transform: translateY(26px); }
    to { opacity: 1; transform: translateY(0); }
  }
}

/* ---- 尊重减弱动效偏好 ---- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; scroll-padding-top: 0; }
  .hero .eyebrow-row, .hero h1, .hero p.sub, .hero-cta, .demo-cred,
  .feature-card, .service-card, .demo-card, .price-card, .feat, .network-card, .flow-node {
    animation: none !important; transition: none !important; transform: none !important;
  }
  .hero { background: linear-gradient(140deg, #0b1c2e 0%, #12344f 55%, #0a3f74 115%); }
}

/* ==========================================================================
   GinCdn 视觉增强层 · 二轮 —— 呼吸感 / 区块差异化 / 便捷微交互
   依然：纯 CSS，不触碰页面结构、文案与任何 JS。
   ========================================================================== */

/* 锚点定位避开吸顶导航 */
section[id] { scroll-margin-top: 66px; }

/* 自包含的外链箭头（内联 SVG data-URI，不依赖可能被改坏的 --ico-ext） */
:root {
  --gx-ext: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M8 5h11v11'/%3E%3Cpath d='M19 5L5 19'/%3E%3C/svg%3E");
}

/* 统一键盘焦点态 */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--accent) !important;
  outline-offset: 3px;
}

/* ============================ Hero：滚动静音 + 底部交融 ============================ */
/* 滚动时背景光晕轻微漂移（渐进增强，仅支持 scroll() 的浏览器生效） */
@supports (animation-timeline: scroll()) {
  .hero {
    will-change: background-position;
    animation: heroBgDrift linear both;
    animation-timeline: scroll(root);
    animation-range: 0 420px;
  }
  @keyframes heroBgDrift {
    from { background-position: 0 0, 0 0, 0 0, 0 0; }
    to   { background-position: 0 -60px, 0 40px, 0 0, 0 0; }
  }
}
/* Hero 底部渐变帘，把深色首屏柔和融进浅色正文区 */
.hero::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 110px;
  background: linear-gradient(180deg, transparent, color-mix(in srgb, var(--bg) 92%, #0b1c2e));
  pointer-events: none;
}

/* 网络卡片后方漂浮光球（纯装饰，pointer-events 穿透） */
.hero-visual::before, .hero-visual::after {
  content: ""; position: absolute; border-radius: 50%; pointer-events: none;
  filter: blur(46px); z-index: 0;
}
.hero-visual::before {
  width: 240px; height: 240px; top: -40px; right: -30px;
  background: radial-gradient(circle, rgba(47,147,242,.5), transparent 68%);
  animation: orbFloat 9s ease-in-out infinite;
}
.hero-visual::after {
  width: 200px; height: 200px; bottom: -30px; left: -40px;
  background: radial-gradient(circle, rgba(33,199,214,.34), transparent 66%);
  animation: orbFloat 11s ease-in-out -3s infinite reverse;
}
@keyframes orbFloat { 0%,100% { transform: translateY(0) scale(1); } 50% { transform: translateY(-18px) scale(1.06); } }
.hero-visual .network-card { position: relative; z-index: 1; }

/* ============================ 区块背景差异化 ============================ */
/* 核心能力区：极淡的网格底纹 */
#features { position: relative; }
#features::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(to right, color-mix(in srgb, var(--ink-3) 7%, transparent) 1px, transparent 1px),
                    linear-gradient(to bottom, color-mix(in srgb, var(--ink-3) 7%, transparent) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(640px 300px at 50% 0%, #000 30%, transparent 78%);
  mask-image: radial-gradient(640px 300px at 50% 0%, #000 30%, transparent 78%);
}

/* 产品功能区：上下渐变发丝线，与浅色底拉开层次 */
.services { position: relative; }
.services::before, .services::after {
  content: ""; position: absolute; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--ink-3) 35%, transparent), transparent);
}
.services::before { top: 0; }
.services::after { bottom: -1px; }

/* ============================ 价格卡：推荐角标 + 行动箭头 ============================ */
/* 推荐角标（Hi 卡右上角，纯装饰文案来自 CSS） */
.price-card.hi::after {
  content: "推荐"; position: absolute; top: 14px; right: -30px;
  padding: 6px 34px; font-size: 11px; font-weight: 700; letter-spacing: .12em;
  color: #fff; background: linear-gradient(135deg, var(--accent), var(--gx-accent-2));
  box-shadow: 0 6px 16px -4px color-mix(in srgb, var(--accent) 55%, transparent);
  transform: rotate(38deg); transform-origin: center; z-index: 1; pointer-events: none;
}
/* 行动按钮前置外链箭头 */
.price-card .price-action::before {
  content: ""; flex: none; width: 13px; height: 13px;
  background-color: currentColor; opacity: .9;
  -webkit-mask: var(--gx-ext) no-repeat center / contain;
  mask: var(--gx-ext) no-repeat center / contain;
}
/* 价格行 hover：微移 + 蓝色高亮 */
.price-card .plist li { transition: background-color .18s, padding-left .18s var(--gx-ease), color .18s; border-radius: 6px; }
.price-card:hover .plist li:hover { background: color-mix(in srgb, var(--accent-soft) 60%, transparent); padding-left: 6px; }
.price-card:hover .plist li:hover b { color: var(--accent); }

/* ============================ 演示卡：状态灯 + 链接箭头 ============================ */
.demo-card-head { position: relative; }
.demo-card-head::after {
  content: ""; width: 8px; height: 8px; border-radius: 50%;
  margin-left: auto; background: var(--good);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--good) 18%, transparent), 0 0 12px color-mix(in srgb, var(--good) 60%, transparent);
  animation: livePulse 2.4s ease-in-out infinite;
}
@keyframes livePulse { 0%,100% { opacity: 1; } 50% { opacity: .45; } }
.demo-link { position: relative; padding-right: 34px; }
.demo-link::after {
  content: ""; position: absolute; right: 12px; top: 50%; width: 13px; height: 13px;
  transform: translateY(-50%); background-color: currentColor; opacity: .65;
  -webkit-mask: var(--gx-ext) no-repeat center / contain;
  mask: var(--gx-ext) no-repeat center / contain;
  transition: transform .2s var(--gx-ease), opacity .2s;
}
.demo-link:hover::after { transform: translate(3px, -50%); opacity: 1; }

/* ============================ 联系表单：卡片光环 + 提交箭头 ============================ */
.contact-form { transition: border-color .25s, box-shadow .3s, transform .25s var(--gx-ease); }
.contact-form:focus-within {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--line));
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 12%, transparent), var(--gx-shadow-md);
}
.form-btn { position: relative; }
.form-btn::after {
  content: ""; display: inline-block; width: 14px; height: 14px; margin-left: 8px;
  vertical-align: -2px; background-color: currentColor;
  -webkit-mask: var(--gx-ext) no-repeat center / contain;
  mask: var(--gx-ext) no-repeat center / contain;
}
.form-group label { letter-spacing: .04em; }

/* ============================ 页脚：品牌水印 + 图标互动 ============================ */
footer.site-foot { overflow: hidden; }
footer.site-foot::after {
  content: "GinCdn"; position: absolute; right: -18px; bottom: -64px;
  font-family: var(--gx-display); font-weight: 700; font-size: clamp(120px, 22vw, 240px);
  line-height: 1; letter-spacing: -.02em; color: color-mix(in srgb, var(--accent) 7%, transparent);
  pointer-events: none; user-select: none;
}
.footer-column li i { transition: transform .2s var(--gx-ease), color .2s; }
.footer-column li:hover i { transform: translateY(-1px) scale(1.12); color: var(--accent); }

/* ============================ 触屏友好：无 hover 能力时不残留悬停位移 ============================ */
@media (hover: none) {
  .feature-card:hover, .service-card:hover, .demo-card:hover,
  .network-card:hover, .price-card:hover { transform: none; }
  /* 推荐卡保留常驻浮起，仅去掉 hover 附加位移 */
  .price-card.hi, .price-card.hi:hover { transform: translateY(-4px); }
}

/* ============================ 移动端收敛 ============================ */
@media (max-width: 620px) {
  .hero-visual::before, .hero-visual::after { display: none; }
  .price-card.hi::after { top: 12px; right: -34px; }
  .hero { animation: none; background-position: 0 0, 0 0, 0 0, 0 0; }
}
@media (max-width: 420px) {
  .hero h1 { font-size: 1.72rem; }
  .notice { font-size: 12px; padding: 6px 10px; }
}

/* 二轮动效同样尊重减弱动效偏好 */
@media (prefers-reduced-motion: reduce) {
  .hero, .hero::after, .hero-visual::before, .hero-visual::after,
  .demo-card-head::after, .price-card.hi::after {
    animation: none !important; transition: none !important;
  }
  footer.site-foot::after { display: none; }
}