/* ============================================================
   FOSHANDEV.CN — 设计系统
   纯 CSS，无框架。主色：白底 / 深海军蓝正文 / #2563eb 品牌蓝
   ============================================================ */

:root {
  --bg: #ffffff;
  --bg2: #f4f7fc;
  --panel: #ffffff;
  --panel2: #f4f7fc;
  --ink: #14213d;
  --ink2: #3d4c6b;
  --muted: #66738e;
  --faint: #9aa6bd;
  --line: #e3e8f1;
  --line2: #c9d3e2;
  --gold: #2563eb;
  --gold-deep: #1d4ed8;
  --red: #e5484d;
  --green: #16a34a;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --nav-h: 84px;
  --wrap: 1400px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
::selection { background: var(--gold); color: #fff; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; background: none; border: none; color: inherit; }
input, textarea, select { font-family: inherit; }
img { max-width: 100%; }
:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding-left: 20px; padding-right: 20px; }
@media (min-width: 768px) { .wrap { padding-left: 40px; padding-right: 40px; } }

/* ---------- 字体工具 ---------- */
.mono { font-family: var(--mono); }
.mono-label {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--gold);
}
.display-xl {
  font-weight: 800;
  letter-spacing: -0.045em;
  line-height: 1.05;
}
.gold { color: var(--gold); }
.muted { color: var(--muted); }

/* ---------- 按钮 ---------- */
.btn-gold {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: var(--gold); color: #fff;
  padding: 14px 28px; font-weight: 700; font-size: 15px;
  border: 1px solid var(--gold);
  transition: background .25s, color .25s;
}
.btn-gold:hover { background: var(--gold-deep); border-color: var(--gold-deep); color: #fff; }
.btn-ghost {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: 1px solid var(--line2); color: var(--ink2);
  padding: 14px 28px; font-size: 15px;
  transition: border-color .25s, color .25s;
}
.btn-ghost:hover { border-color: var(--gold); color: var(--gold); }

.link-underline {
  background-image: linear-gradient(currentColor, currentColor);
  background-size: 0% 2px; background-repeat: no-repeat; background-position: 0 100%;
  transition: background-size .3s, color .2s;
  padding-bottom: 2px;
}
.link-underline:hover { background-size: 100% 2px; color: var(--gold); }

/* ---------- 纹理 ---------- */
.bg-grid {
  background-image:
    linear-gradient(to right, rgba(20,33,61,0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(20,33,61,0.05) 1px, transparent 1px);
  background-size: 56px 56px;
}
.bg-dots {
  background-image: radial-gradient(rgba(20,33,61,0.08) 1px, transparent 1px);
  background-size: 18px 18px;
}

/* ---------- 加载屏（每会话一次） ---------- */
.loader {
  position: fixed; inset: 0; z-index: 200;
  background: var(--bg);
  display: flex; align-items: center; justify-content: center;
  transition: opacity .5s, visibility .5s;
}
.loader.done { opacity: 0; visibility: hidden; }
.loader .num { font-family: var(--mono); font-weight: 700; font-size: clamp(72px, 14vw, 160px); line-height: 1; color: var(--gold); }
.loader .num small { font-size: .35em; color: var(--muted); }
.loader .tip { font-family: var(--mono); font-size: 11px; letter-spacing: .3em; color: var(--muted); text-align: center; margin-top: 16px; }

/* ---------- 滚动进度 ---------- */
.scroll-progress {
  position: fixed; top: 0; left: 0; height: 2px; width: 0;
  background: var(--gold); z-index: 90;
}

/* ---------- 导航 ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 80;
  transition: background .3s, border-color .3s, box-shadow .3s;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}
.site-header.scrolled, .site-header.menu-open {
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom-color: var(--line);
}
.site-header.scrolled { box-shadow: 0 8px 30px rgba(20,33,61,.08); }
.nav-bar {
  height: var(--nav-h);
  display: flex; align-items: center; justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand .logo {
  width: 46px; height: 46px; background: var(--gold); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--mono); font-weight: 700; font-size: 19px;
  transition: transform .2s;
}
.brand:hover .logo { transform: rotate(-6deg); }
.brand .bname { font-weight: 700; font-size: 17px; letter-spacing: .02em; display: block; line-height: 1.2; }
.brand .bname-en { font-family: var(--mono); font-size: 11px; letter-spacing: .25em; color: var(--muted); display: block; line-height: 1.2; }

.nav-desktop { display: none; align-items: center; gap: 34px; }
@media (min-width: 1100px) { .nav-desktop { display: flex; } }

.nav-item { position: relative; }
.nav-link {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 30px 0; font-size: 16px; color: var(--ink2);
  transition: color .2s;
}
.nav-link:hover { color: var(--gold); }
.nav-item.active > .nav-link { color: var(--gold); font-weight: 700; }
.nav-link .caret { font-size: 10px; color: var(--muted); transition: transform .2s, color .2s; }
.nav-item:hover .caret { transform: rotate(180deg); color: var(--gold); }

/* 纯 CSS 下拉菜单：hover + 键盘 focus-within */
.nav-drop {
  position: absolute; top: 100%; left: 50%; transform: translateX(-50%) translateY(6px);
  min-width: 176px;
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: 0 18px 40px rgba(20,33,61,.14);
  padding: 8px 0;
  opacity: 0; visibility: hidden;
  transition: opacity .2s, transform .2s, visibility .2s;
}
.nav-item:hover .nav-drop,
.nav-item:focus-within .nav-drop {
  opacity: 1; visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.nav-drop a {
  display: flex; align-items: baseline; gap: 8px;
  padding: 10px 16px; font-size: 13px; color: var(--ink2);
  transition: background .15s, color .15s;
}
.nav-drop a:hover, .nav-drop a:focus-visible { background: #eef2fa; color: var(--gold); }
.nav-drop a .no { font-family: var(--mono); font-size: 9px; color: var(--muted); }

.nav-login {
  border: 1px solid var(--line2); padding: 11px 22px;
  font-family: var(--mono); font-size: 13px; letter-spacing: .15em; color: var(--ink2);
  transition: border-color .2s, color .2s;
}
.nav-login:hover { border-color: var(--gold); color: var(--gold); }

/* 汉堡 */
.burger {
  position: relative; z-index: 100;
  width: 44px; height: 44px;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px;
}
.burger span { display: block; width: 24px; height: 2px; background: var(--ink); transition: transform .3s, opacity .3s; }
.burger.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.burger.open span:nth-child(2) { opacity: 0; }
.burger.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
@media (min-width: 1100px) { .burger { display: none; } }

/* 移动端全屏菜单 */
.m-menu {
  position: fixed; inset: 0; z-index: 90;
  background: var(--bg);
  padding: calc(var(--nav-h) + 12px) 32px 32px;
  overflow-y: auto;
  opacity: 0; visibility: hidden; transition: opacity .3s, visibility .3s;
}
.m-menu.open { opacity: 1; visibility: visible; }
.m-menu details { border-bottom: 1px solid var(--line); }
.m-menu summary {
  list-style: none; display: flex; align-items: center; justify-content: space-between;
  padding: 14px 0; font-size: 24px; font-weight: 700; letter-spacing: -.02em; cursor: pointer;
}
.m-menu summary::-webkit-details-marker { display: none; }
.m-menu summary .idx { font-family: var(--mono); font-size: 12px; color: var(--gold); margin-right: 12px; }
.m-menu summary .arrow { font-size: 14px; color: var(--muted); transition: transform .2s; }
.m-menu details[open] summary .arrow { transform: rotate(180deg); color: var(--gold); }
.m-menu .m-sub { display: flex; flex-direction: column; padding: 0 0 14px 36px; }
.m-menu .m-sub a { padding: 8px 0; font-size: 15px; color: var(--muted); }
.m-menu .m-sub a:hover { color: var(--gold); }
.m-menu .m-sub a.main { color: var(--ink); font-weight: 700; }
.m-menu > a.m-solo {
  display: flex; align-items: center;
  padding: 14px 0; font-size: 24px; font-weight: 700; letter-spacing: -.02em;
  border-bottom: 1px solid var(--line);
}
.m-menu > a.m-solo .idx { font-family: var(--mono); font-size: 12px; color: var(--gold); margin-right: 12px; }
.m-login {
  display: inline-block; margin-top: 28px;
  border: 1px solid var(--gold); color: var(--gold);
  padding: 12px 24px; font-family: var(--mono); font-size: 14px; letter-spacing: .2em;
}
.m-icp { margin-top: 28px; font-family: var(--mono); font-size: 10px; letter-spacing: .25em; color: var(--muted); }

/* ---------- 页面通用 ---------- */
main { padding-top: var(--nav-h); }
.page-hero { border-bottom: 1px solid var(--line); position: relative; overflow: hidden; }
.page-hero .inner { padding: 46px 0 38px; }
@media (min-width: 768px) { .page-hero .inner { padding: 60px 0 48px; } }
.page-hero h1 { font-size: clamp(26px, 3.6vw, 42px); line-height: 1.25; margin-top: 14px; letter-spacing: -.01em; }
.page-hero .lead { margin-top: 20px; max-width: 620px; color: var(--muted); font-size: 17px; line-height: 1.8; }

.section { padding: 64px 0; border-bottom: 1px solid var(--line); }
@media (min-width: 768px) { .section { padding: 96px 0; } }
.section.dark { background: var(--bg2); }
.section .head { margin-bottom: 40px; }
.section h2 { font-size: clamp(24px, 3vw, 36px); margin-top: 12px; }
.section .head p.sub { margin-top: 14px; max-width: 640px; color: var(--muted); }
section[id], div[id^="doc-"] { scroll-margin-top: calc(var(--nav-h) + 12px); }

/* ---------- 滚动进入动画 ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s cubic-bezier(.2,.6,.2,1), transform .7s cubic-bezier(.2,.6,.2,1); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- 跑马灯 ---------- */
.marquee { overflow: hidden; white-space: nowrap; }
.marquee-track {
  display: inline-flex; align-items: center;
  animation: marquee-x 28s linear infinite;
}
.marquee.slow .marquee-track { animation-duration: 46s; }
@keyframes marquee-x { from { transform: translateX(0); } to { transform: translateX(-50%); } }
.marquee .sep { color: var(--gold); margin: 0 24px; }
@media (prefers-reduced-motion: reduce) { .marquee-track { animation: none; } }

/* ---------- 终端窗口 ---------- */
.terminal {
  border: 1px solid var(--line); background: #fff;
  overflow: hidden; border-radius: 12px; box-shadow: var(--shadow-sm);
}
.terminal-bar {
  display: flex; align-items: center; gap: 8px;
  border-bottom: 1px solid var(--line); padding: 12px 16px;
  background: #eef2f8;
}
.terminal-bar .dot { width: 12px; height: 12px; border-radius: 50%; }
.terminal-bar .r { background: #ff5f57; } .terminal-bar .y { background: #febc2e; } .terminal-bar .g { background: #28c840; }
.terminal-bar .title { margin-left: 8px; font-family: var(--mono); font-size: 12px; color: var(--muted); }
.terminal-body { font-family: var(--mono); font-size: 13px; line-height: 2; padding: 20px; }
.terminal-body .p { color: var(--gold); }
.terminal-body .c { color: var(--muted); }
.terminal-body .ok { color: var(--green); }
.caret { display: inline-block; width: 9px; height: 18px; background: var(--gold); vertical-align: -3px; animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* ---------- 首页 ---------- */
.hero { position: relative; overflow: hidden; }
.hero .inner { padding: 88px 0 72px; }
@media (min-width: 768px) { .hero .inner { padding: 130px 0 96px; } }
.hero h1 { font-size: clamp(44px, 8vw, 110px); }
.hero .lead { margin-top: 24px; max-width: 680px; font-size: 18px; color: var(--ink2); line-height: 1.85; }
.hero .lead b { color: var(--ink); }
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 36px; }
.hero-grid { display: grid; gap: 40px; align-items: start; }
@media (min-width: 1024px) { .hero-grid { grid-template-columns: 1.05fr 1fr; } }

.trust-row { display: grid; grid-template-columns: 1fr; gap: 1px; background: var(--line); border: 1px solid var(--line); margin-top: 48px; }
@media (min-width: 768px) { .trust-row { grid-template-columns: repeat(3, 1fr); } }
.trust-row > div { background: var(--bg); padding: 14px 18px; font-family: var(--mono); font-size: 12px; color: var(--muted); }
.trust-row .v { color: var(--gold); }

.stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
@media (min-width: 900px) { .stats { grid-template-columns: repeat(4, 1fr); } }
.stats > div { background: var(--bg); padding: 28px 24px; }
.stats .n { font-family: var(--mono); font-size: clamp(28px, 3.5vw, 44px); font-weight: 700; color: var(--gold); }
.stats .l { margin-top: 6px; font-size: 14px; color: var(--muted); }

.gold-band { background: var(--gold); color: #fff; padding: 14px 0; font-weight: 700; }
.gold-band .sep { color: rgba(255,255,255,.7); }

/* 快捷入口卡 */
.quick-grid { display: grid; gap: 20px; }
@media (min-width: 900px) { .quick-grid { grid-template-columns: repeat(3, 1fr); } }
.quick-card {
  display: flex; flex-direction: column; height: 100%;
  border: 1px solid var(--line); background: var(--panel); padding: 32px 28px;
  transition: border-color .3s, transform .3s;
}
.quick-card:hover { border-color: rgba(37,99,235,.55); transform: translateY(-4px); }
.quick-card .no { font-family: var(--mono); font-size: 13px; color: var(--gold); }
.quick-card h3 { font-size: 22px; font-weight: 700; margin-top: 14px; letter-spacing: -.02em; }
.quick-card p { margin-top: 10px; color: var(--muted); font-size: 14px; flex: 1; }
.quick-card .go { margin-top: 20px; font-family: var(--mono); font-size: 12px; color: var(--gold); }

/* ---------- 文章列表（巨型排版行） ---------- */
.post-row {
  display: grid; grid-template-columns: 1fr; gap: 6px;
  padding: 24px 0; border-top: 1px solid var(--line);
  transition: background .2s;
}
.post-row:last-child { border-bottom: 1px solid var(--line); }
.post-row:hover { background: #f2f5fb; }
@media (min-width: 768px) { .post-row { grid-template-columns: 110px 1fr auto; gap: 40px; align-items: baseline; } }
.post-row .date { font-family: var(--mono); font-size: 13px; color: var(--muted); }
.post-row .t { font-size: 19px; font-weight: 700; letter-spacing: -.02em; transition: color .2s; }
.post-row:hover .t { color: var(--gold); }
@media (min-width: 768px) { .post-row .t { font-size: 24px; } }
.post-row .s { display: block; margin-top: 6px; max-width: 720px; font-size: 14px; color: var(--muted); }
.tag {
  display: inline-block; border: 1px solid var(--line2); color: var(--gold);
  padding: 2px 10px; font-family: var(--mono); font-size: 11px; white-space: nowrap;
}
.tag.red { border-color: rgba(229,72,77,.5); color: var(--red); }
.read-more { font-family: var(--mono); font-size: 12px; color: var(--muted); transition: color .2s, transform .2s; display: inline-block; }
.post-row:hover .read-more { color: var(--gold); transform: translateX(4px); }

/* 分类筛选条 */
.filter-bar {
  position: sticky; top: var(--nav-h); z-index: 40;
  background: rgba(255,255,255,.92); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  padding: 10px 0;
}
.filter-bar .wrap { display: flex; flex-wrap: wrap; gap: 4px 8px; }
.filter-btn {
  padding: 8px 14px; font-size: 13px; color: var(--muted);
  transition: color .2s, background .2s;
}
.filter-btn:hover { color: var(--ink); }
.filter-btn.on { background: var(--gold); color: #fff; font-weight: 700; }
.filter-btn .cnt { font-family: var(--mono); font-size: 10px; margin-left: 4px; opacity: .6; }

/* ---------- 文章正文 ---------- */
.article-head { padding: 64px 0 40px; border-bottom: 1px solid var(--line); }
.article-head h1 { font-size: clamp(28px, 4.5vw, 52px); max-width: 900px; margin-top: 18px; }
.article-meta { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 20px; font-family: var(--mono); font-size: 12px; color: var(--muted); }
.article-body { max-width: 780px; padding: 48px 0 80px; font-size: 16.5px; line-height: 1.9; color: var(--ink2); }
.article-body h3 { font-size: 24px; font-weight: 700; letter-spacing: -.02em; color: var(--ink); margin: 44px 0 16px; }
.article-body p { margin: 16px 0; }
.article-body ul { margin: 16px 0; padding-left: 4px; list-style: none; }
.article-body li { padding-left: 22px; position: relative; margin: 10px 0; }
.article-body li::before { content: "▸"; position: absolute; left: 0; color: var(--gold); }
.article-body pre {
  background: #f7fafd; border: 1px solid var(--line);
  padding: 18px 20px; margin: 24px 0;
  font-family: var(--mono); font-size: 13px; line-height: 1.75;
  overflow-x: auto; color: #157347;
}
.article-body pre .lang {
  display: block; font-size: 10px; letter-spacing: .2em; color: var(--faint);
  margin-bottom: 10px; text-transform: uppercase;
}
.back-btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--mono); font-size: 13px; color: var(--muted);
  transition: color .2s;
}
.back-btn:hover { color: var(--gold); }

/* ---------- 平台页 ---------- */
.pillars { display: grid; gap: 0; }
.pillar { display: flex; gap: 24px; padding: 20px 0; border-bottom: 1px solid var(--line); transition: border-color .3s; }
.pillar:hover { border-bottom-color: rgba(37,99,235,.5); }
.pillar .no { font-family: var(--mono); font-size: 14px; color: var(--gold); flex-shrink: 0; }
.pillar h3 { font-size: 18px; font-weight: 700; transition: color .2s; }
.pillar:hover h3 { color: var(--gold); }
.pillar p { margin-top: 4px; font-size: 14px; color: var(--muted); }

/* 时间线 */
.timeline { position: relative; margin-top: 24px; }
.timeline::before { content: ""; position: absolute; left: 7px; top: 0; bottom: 0; width: 1px; background: var(--line); }
.tl-item { position: relative; padding: 0 0 40px 40px; }
.tl-item::before {
  content: ""; position: absolute; left: 0; top: 6px;
  width: 15px; height: 15px; border-radius: 50%;
  border: 2px solid var(--gold); background: var(--bg);
}
.tl-item .d { font-family: var(--mono); font-size: 14px; font-weight: 700; color: var(--gold); }
.tl-item h3 { font-size: 20px; font-weight: 700; margin-top: 4px; }
.tl-item p { margin-top: 6px; font-size: 14px; color: var(--muted); max-width: 560px; }
@media (min-width: 900px) {
  .timeline::before { left: 50%; }
  .tl-item { width: 50%; padding-left: 0; padding-right: 56px; text-align: right; }
  .tl-item::before { left: auto; right: -8px; }
  .tl-item:nth-child(even) { margin-left: 50%; padding-right: 0; padding-left: 56px; text-align: left; }
  .tl-item:nth-child(even)::before { right: auto; left: -7px; }
  .tl-item p { margin-left: auto; }
  .tl-item:nth-child(even) p { margin-left: 0; }
}

/* 设计器示意 + Playground */
.designer-mock .cols { display: grid; grid-template-columns: 88px 1fr 110px; }
.designer-mock .side { padding: 12px; border-right: 1px solid var(--line); }
.designer-mock .side.r { border-right: none; border-left: 1px solid var(--line); }
.designer-mock .side .cap { font-family: var(--mono); font-size: 9px; letter-spacing: .2em; color: var(--muted); margin-bottom: 8px; }
.designer-mock .chip { border: 1px dashed var(--line2); padding: 6px 8px; text-align: center; font-size: 10px; color: var(--ink2); margin-bottom: 8px; }
.designer-mock .canvas { position: relative; min-height: 240px; background: #f4f7fc; padding: 16px; }
.designer-mock .canvas .bg-dots { position: absolute; inset: 0; opacity: .6; }
.designer-mock .blk { position: relative; border: 1px solid var(--line2); background: #fff; padding: 10px; margin-bottom: 12px; box-shadow: 0 1px 3px rgba(20,33,61,.06); }
.designer-mock .blk.hot { border-color: var(--gold); background: rgba(37,99,235,.08); box-shadow: 0 0 0 3px rgba(37,99,235,.12); }
.mock-bar { height: 6px; background: #d8e0ec; }
.mock-input { height: 28px; border: 1px solid var(--line2); background: #fff; margin-top: 8px; }

/* Playground */
.pg-grid { display: grid; }
@media (min-width: 768px) { .pg-grid { grid-template-columns: 150px 1fr; } }
@media (min-width: 1100px) { .pg-grid { grid-template-columns: 150px 1fr 300px; } }
.pg-palette { padding: 12px; border-bottom: 1px solid var(--line); }
@media (min-width: 768px) { .pg-palette { border-bottom: none; border-right: 1px solid var(--line); } }
.pg-palette .cap { font-family: var(--mono); font-size: 9px; letter-spacing: .2em; color: var(--muted); margin-bottom: 8px; }
.pg-palette .items { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; }
@media (min-width: 768px) { .pg-palette .items { grid-template-columns: 1fr; } }
.pg-add {
  display: flex; align-items: center; gap: 8px;
  border: 1px dashed var(--line2); padding: 6px 8px; font-size: 11px; color: var(--ink2);
  transition: border-color .2s, color .2s; text-align: left;
}
.pg-add:hover { border-color: var(--gold); color: var(--gold); }
.pg-add .ic { font-family: var(--mono); font-size: 10px; color: var(--muted); }
.pg-add:hover .ic { color: var(--gold); }
.pg-canvas { position: relative; min-height: 300px; background: #f7fafd; padding: 16px; }
.pg-canvas .bg-dots { position: absolute; inset: 0; opacity: .6; pointer-events: none; }
.pg-items { position: relative; display: flex; flex-wrap: wrap; gap: 8px; }
.pg-empty { width: 100%; padding: 64px 0; text-align: center; font-family: var(--mono); font-size: 12px; color: var(--faint); }
.pg-item { display: block; width: 100%; border: 1px solid var(--line2); background: #fff; padding: 10px; text-align: left; transition: border-color .2s; }
.pg-item:hover { border-color: #b9c8de; }
.pg-item.sel { border-color: var(--gold); background: rgba(37,99,235,.06); }
.pg-item.half { width: calc(50% - 4px); }
.pg-item .lb { font-size: 10px; color: var(--muted); margin-bottom: 4px; display: block; }
.pg-item .lb .req { color: var(--red); margin-left: 2px; }
.pg-item .in-box { height: 24px; border: 1px solid var(--line2); background: #f4f7fc; padding: 0 8px; font-family: var(--mono); font-size: 10px; line-height: 24px; color: var(--faint); display: flex; justify-content: space-between; align-items: center; }
.pg-item .ta-box { height: 40px; border: 1px solid var(--line2); background: #f4f7fc; }
.pg-item .sw { height: 16px; width: 32px; border-radius: 99px; background: var(--gold); padding: 2px; display: flex; }
.pg-item .sw::after { content: ""; margin-left: auto; height: 12px; width: 12px; border-radius: 50%; background: #fff; }
.pg-item .btn-demo { display: inline-block; background: var(--gold); color: #fff; font-size: 11px; font-weight: 700; padding: 6px 16px; }
.pg-item .row-bars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 4px; margin-bottom: 4px; }
.pg-item .row-bars i { height: 10px; background: #dde5f0; }
.pg-item .row-bars.head i { background: #d8e0ec; }
.pg-item .stat-n { font-family: var(--mono); font-size: 18px; font-weight: 700; color: var(--gold); }
.pg-item .stat-up { font-family: var(--mono); font-size: 9px; color: var(--green); }
.pg-side { border-top: 1px solid var(--line); }
@media (min-width: 768px) and (max-width: 1099px) { .pg-side { grid-column: 1 / -1; } }
@media (min-width: 1100px) { .pg-side { border-top: none; border-left: 1px solid var(--line); } }
.pg-props { padding: 12px; border-bottom: 1px solid var(--line); }
.pg-props .cap, .pg-schema .cap { font-family: var(--mono); font-size: 9px; letter-spacing: .2em; color: var(--muted); margin-bottom: 8px; }
.pg-field { margin-bottom: 10px; }
.pg-field label { display: block; font-size: 10px; color: var(--muted); margin-bottom: 4px; }
.pg-field input[type="text"] {
  width: 100%; border: 1px solid var(--line2); background: #fff; color: var(--ink);
  padding: 7px 8px; font-size: 12px; outline: none;
}
.pg-field input[type="text"]:focus { border-color: var(--gold); }
.pg-checks { display: flex; gap: 8px; margin-bottom: 10px; }
.pg-checks label {
  flex: 1; display: flex; align-items: center; gap: 6px;
  border: 1px solid var(--line2); padding: 7px 8px; font-size: 11px; color: var(--ink2); cursor: pointer;
}
.pg-checks input { accent-color: var(--gold); }
.pg-del {
  width: 100%; border: 1px solid rgba(229,72,77,.4); color: var(--red);
  padding: 7px; font-size: 11px; transition: background .2s;
}
.pg-del:hover { background: rgba(229,72,77,.08); }
.pg-schema { padding: 12px; }
.pg-schema pre {
  max-height: 240px; overflow: auto; background: #f7fafd;
  padding: 12px; font-family: var(--mono); font-size: 10px; line-height: 1.7; color: #157347;
}
.pg-tools { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.pg-tools .cnt { font-family: var(--mono); font-size: 10px; color: var(--muted); }
.pg-mini-btn {
  border: 1px solid var(--line2); padding: 4px 10px;
  font-family: var(--mono); font-size: 10px; color: var(--muted); transition: border-color .2s, color .2s;
}
.pg-mini-btn:hover { border-color: var(--red); color: var(--red); }
.pg-mini-btn.gold { background: var(--gold); border-color: var(--gold); color: #fff; font-weight: 700; }
.pg-mini-btn.gold:hover { background: var(--gold-deep); color: #fff; }

/* ---------- 案例 / 作品视觉图（纯 CSS 绘制） ---------- */
.wv { position: relative; aspect-ratio: 16/10; overflow: hidden; border-bottom: 1px solid var(--line); background: var(--panel); }
.wv .inner { position: absolute; inset: 0; padding: 16px; transition: transform .4s cubic-bezier(.2,.6,.2,1); }
.case-card:hover .wv .inner, .work-card:hover .wv .inner { transform: scale(1.04); }
.wv .box { border: 1px solid var(--line2); background: #f7fafd; }
.wv .fill-gold { background: var(--gold); }
.wv .bar { height: 8px; background: #d8e0ec; }
.wv .bar.g { background: var(--gold); }
.wv .bar.faint { background: #e8edf5; }
.wv-badge {
  position: absolute; left: 12px; top: 12px; z-index: 2;
  background: rgba(255,255,255,.92); padding: 4px 8px; box-shadow: 0 2px 8px rgba(20,33,61,.15);
  font-family: var(--mono); font-size: 10px; letter-spacing: .15em; color: var(--gold-deep);
}

/* ---------- 卡片网格 ---------- */
.card-grid { display: grid; gap: 20px; }
@media (min-width: 768px) { .card-grid.c2 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1100px) { .card-grid.c3 { grid-template-columns: repeat(3, 1fr); } }

.case-card, .work-card {
  display: flex; flex-direction: column; height: 100%;
  border: 1px solid var(--line); background: var(--panel);
  transition: border-color .3s;
}
.case-card:hover, .work-card:hover { border-color: rgba(37,99,235,.5); }
.card-body { padding: 20px; display: flex; flex-direction: column; flex: 1; }
.card-body h3 { font-size: 18px; font-weight: 700; letter-spacing: -.02em; transition: color .2s; }
.case-card:hover h3, .work-card:hover h3 { color: var(--gold); }
.card-body .desc { margin-top: 10px; font-size: 13px; color: var(--muted); line-height: 1.75; flex: 1; }
.card-meta { display: flex; flex-wrap: wrap; gap: 10px; font-family: var(--mono); font-size: 11px; color: var(--muted); margin-top: 12px; }
.card-meta i { font-style: normal; color: var(--gold); }
.tag-row { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 14px; }
.tag-row .tag { color: var(--muted); font-size: 10px; }

.case-hl { margin-top: 12px; list-style: none; }
.case-hl li { font-size: 13px; color: var(--ink2); padding-left: 18px; position: relative; margin-top: 6px; }
.case-hl li::before { content: "▸"; position: absolute; left: 0; color: var(--gold); }

/* ---------- 手册页 ---------- */
.docs-layout { display: grid; gap: 32px; grid-template-columns: minmax(0, 1fr); }
@media (min-width: 1024px) { .docs-layout { grid-template-columns: 260px minmax(0, 1fr); align-items: start; } }
.docs-side { position: sticky; top: calc(var(--nav-h) + 24px); border: 1px solid var(--line); background: var(--panel2); padding: 20px; }
.docs-side .grp { font-family: var(--mono); font-size: 10px; letter-spacing: .2em; color: var(--gold); margin: 18px 0 8px; }
.docs-side .grp:first-child { margin-top: 0; }
.docs-side a { display: block; padding: 6px 0; font-size: 13px; color: var(--muted); transition: color .15s; }
.docs-side a:hover, .docs-side a.on { color: var(--gold); }
.doc-chapter { border: 1px solid var(--line); background: var(--panel2); padding: 28px; margin-bottom: 24px; }
.doc-chapter h3 { font-size: 22px; font-weight: 700; letter-spacing: -.02em; }
.doc-chapter .ch-no { font-family: var(--mono); font-size: 11px; color: var(--gold); letter-spacing: .2em; }
.doc-body { margin-top: 14px; font-size: 15px; line-height: 1.9; color: var(--ink2); }
.doc-body h4 { font-size: 17px; color: var(--ink); font-weight: 700; margin: 26px 0 10px; }
.doc-body p { margin: 12px 0; }
.doc-body ul { list-style: none; margin: 12px 0; }
.doc-body li { padding-left: 20px; position: relative; margin: 8px 0; }
.doc-body li::before { content: "▸"; position: absolute; left: 0; color: var(--gold); }
.doc-body pre {
  background: #f7fafd; border: 1px solid var(--line); padding: 16px 18px; margin: 18px 0;
  font-family: var(--mono); font-size: 12.5px; line-height: 1.75; overflow-x: auto; color: #157347;
}

/* ---------- FAQ（原生 details 手风琴） ---------- */
.faq-list { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item summary {
  list-style: none; cursor: pointer;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 22px 4px; font-size: 17px; font-weight: 700; letter-spacing: -.01em;
  transition: color .2s;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--gold); }
.faq-item summary .plus {
  font-family: var(--mono); font-size: 20px; color: var(--gold); flex-shrink: 0;
  transition: transform .25s;
}
.faq-item[open] summary .plus { transform: rotate(45deg); }
.faq-item .a { padding: 0 4px 24px; color: var(--muted); line-height: 1.85; max-width: 860px; }

/* ---------- 表单 ---------- */
.form-tabs { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 24px; }
.form-tab { border: 1px solid var(--line2); padding: 10px 18px; font-size: 14px; color: var(--muted); transition: all .2s; }
.form-tab.on { background: var(--gold); border-color: var(--gold); color: #fff; font-weight: 700; }
.f-field { margin-bottom: 18px; }
.f-field label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 8px; }
.f-field label .req { color: var(--red); }
.f-field input, .f-field textarea {
  width: 100%; border: 1px solid var(--line2); background: #fff; color: var(--ink);
  padding: 13px 14px; font-size: 15px; outline: none; transition: border-color .2s;
}
.f-field input:focus, .f-field textarea:focus { border-color: var(--gold); }
.f-ok { border: 1px solid rgba(22,163,74,.4); background: rgba(22,163,74,.06); padding: 32px; text-align: center; }
.f-ok h3 { font-size: 22px; font-weight: 700; margin-top: 12px; }
.f-ok p { margin-top: 10px; color: var(--muted); font-size: 14px; }
.f-ok .big { font-size: 40px; color: var(--green); font-family: var(--mono); }

/* ---------- 工具页 ---------- */
.tool-tabs { display: flex; flex-wrap: wrap; gap: 6px; border-bottom: 1px solid var(--line); padding-bottom: 0; margin-bottom: 32px; }
.tool-tab { padding: 12px 18px; font-size: 14px; color: var(--muted); border-bottom: 2px solid transparent; transition: all .2s; margin-bottom: -1px; }
.tool-tab:hover { color: var(--ink); }
.tool-tab.on { color: var(--gold); border-bottom-color: var(--gold); font-weight: 700; }
.tool-pane { display: none; }
.tool-pane.on { display: block; }
.tool-io { display: grid; gap: 20px; }
@media (min-width: 900px) { .tool-io { grid-template-columns: 1fr 1fr; } }
.tool-box textarea, .tool-box input[type="text"] {
  width: 100%; border: 1px solid var(--line2); background: #f7fafd; color: #157347;
  font-family: var(--mono); font-size: 13px; line-height: 1.7; padding: 14px; outline: none;
  min-height: 180px; resize: vertical;
}
.tool-box input[type="text"] { min-height: 0; }
.tool-box textarea:focus, .tool-box input:focus { border-color: var(--gold); }
.tool-box .cap { font-family: var(--mono); font-size: 10px; letter-spacing: .2em; color: var(--muted); margin-bottom: 8px; display: flex; justify-content: space-between; }
.tool-msg { font-family: var(--mono); font-size: 12px; margin-top: 10px; min-height: 18px; }
.tool-msg.ok { color: var(--green); }
.tool-msg.err { color: var(--red); }
.tool-actions { display: flex; flex-wrap: wrap; gap: 10px; margin: 18px 0; }
.kv { display: flex; justify-content: space-between; gap: 12px; border: 1px solid var(--line); background: var(--panel2); padding: 12px 16px; font-family: var(--mono); font-size: 13px; margin-bottom: 8px; }
.kv b { color: var(--gold); font-weight: 700; }

/* ---------- 链接网格 ---------- */
.link-grid { display: grid; background: var(--bg); border: 1px solid var(--line); }
@media (min-width: 640px) { .link-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .link-grid { grid-template-columns: repeat(3, 1fr); } }
.link-cell { background: var(--bg); padding: 24px; display: block; transition: background .25s; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); margin: 0 -1px -1px 0; }
.link-cell:hover { background: var(--panel2); }
.link-cell .top { display: flex; justify-content: space-between; align-items: center; }
.link-cell .from { font-family: var(--mono); font-size: 11px; color: var(--muted); }
.link-cell .arr { font-family: var(--mono); color: var(--muted); transition: transform .2s, color .2s; }
.link-cell:hover .arr { color: var(--gold); transform: translate(2px, -2px); }
.link-cell h3 { margin-top: 14px; font-size: 17px; font-weight: 700; transition: color .2s; }
.link-cell:hover h3 { color: var(--gold); }
.link-cell p { margin-top: 8px; font-size: 13px; color: var(--muted); }

.res-group { margin-bottom: 56px; }
.res-group .g-head { display: flex; align-items: baseline; gap: 16px; border-bottom: 1px solid var(--line); padding-bottom: 14px; margin-bottom: 0; }
.res-group .g-no { font-family: var(--mono); font-size: 13px; color: var(--gold); }
.res-group h3 { font-size: 22px; font-weight: 700; letter-spacing: -.02em; }
.res-group .g-note { font-size: 13px; color: var(--muted); }

/* ---------- 关于我 ---------- */
.fact-list { border: 1px solid var(--line); background: var(--panel2); }
.fact-list .row { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; padding: 16px 24px; border-bottom: 1px solid var(--line); }
.fact-list .row:last-child { border-bottom: none; }
.fact-list dt { font-family: var(--mono); font-size: 11px; letter-spacing: .2em; color: var(--muted); }
.fact-list dd { font-size: 14px; font-weight: 700; text-align: right; }

.skill-panel { border: 1px solid var(--line); background: var(--panel2); padding: 32px; }
.skill { margin-bottom: 24px; }
.skill:last-child { margin-bottom: 0; }
.skill .t { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 8px; }
.skill .n { font-weight: 500; }
.skill .p { font-family: var(--mono); font-size: 14px; color: var(--gold); }
.skill .track { height: 5px; background: var(--line); }
.skill .fill { height: 100%; background: var(--gold); width: 0; transition: width 1s cubic-bezier(.2,.6,.2,1); }

.skill-groups { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); }
@media (min-width: 640px) { .skill-groups { grid-template-columns: repeat(2, 1fr); } }
.skill-groups > div { background: var(--bg); padding: 24px; }
.skill-groups .g { font-family: var(--mono); font-size: 11px; letter-spacing: .2em; color: var(--gold); }
.skill-groups ul { list-style: none; margin-top: 12px; }
.skill-groups li { font-size: 14px; color: var(--ink2); padding-left: 16px; position: relative; margin-top: 8px; }
.skill-groups li::before { content: "▸"; position: absolute; left: 0; color: var(--gold); }

.counters { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
@media (min-width: 1024px) { .counters { grid-template-columns: repeat(4, 1fr); } }
.counters > div { background: var(--bg); padding: 32px 24px; text-align: center; }
.counters .n { font-family: var(--mono); font-size: clamp(26px, 3vw, 38px); font-weight: 700; color: var(--gold); }
.counters .l { margin-top: 8px; font-size: 14px; color: var(--muted); }

.svc-grid { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); }
@media (min-width: 768px) { .svc-grid { grid-template-columns: repeat(2, 1fr); } }
.svc-grid > div { background: var(--bg2); padding: 32px; transition: background .25s; }
.svc-grid > div:hover { background: var(--panel2); }
.svc-grid .no { font-family: var(--mono); font-size: 14px; color: var(--gold); }
.svc-grid h3 { font-size: 20px; font-weight: 700; margin-top: 12px; }
.svc-grid p { margin-top: 8px; color: var(--muted); font-size: 14px; line-height: 1.8; }

.flow-grid { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); }
@media (min-width: 768px) { .flow-grid { grid-template-columns: repeat(4, 1fr); } }
.flow-grid > div { background: var(--bg2); padding: 24px; }
.flow-grid .step { font-family: var(--mono); font-size: 12px; color: var(--gold); }
.flow-grid h4 { font-weight: 700; margin-top: 8px; }
.flow-grid p { margin-top: 6px; font-size: 13px; color: var(--muted); }

.social-grid { display: grid; gap: 20px; }
@media (min-width: 640px) { .social-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .social-grid { grid-template-columns: repeat(4, 1fr); } }
.social-card { border: 1px solid var(--line); background: var(--panel2); padding: 24px; display: flex; flex-direction: column; transition: border-color .3s; }
.social-card:hover { border-color: rgba(37,99,235,.6); }
.social-card .top { display: flex; justify-content: space-between; align-items: center; }
.social-card .ic { color: var(--gold); }
.social-card .ic svg { width: 24px; height: 24px; }
.social-card .plat { font-family: var(--mono); font-size: 10px; letter-spacing: .2em; color: var(--muted); text-transform: uppercase; }
.social-card .id { font-family: var(--mono); font-size: 20px; font-weight: 700; margin-top: 20px; word-break: break-all; }
.social-card .note { margin-top: 8px; font-size: 13px; color: var(--muted); flex: 1; }
.copy-btn {
  margin-top: 20px; width: 100%; border: 1px solid var(--line2); padding: 10px;
  font-family: var(--mono); font-size: 12px; letter-spacing: .15em; color: var(--ink2);
  transition: all .2s;
}
.copy-btn:hover { border-color: var(--gold); color: var(--gold); }
.copy-btn.ok { border-color: var(--green); color: var(--green); }

.contact-bar {
  margin-top: 32px; border: 1px solid var(--line); background: var(--panel2); padding: 24px;
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px;
}
.contact-bar p { font-family: var(--mono); font-size: 14px; color: var(--muted); }
.contact-bar b { color: var(--gold); font-weight: 700; }

/* ---------- 管理后台 ---------- */
.admin-wrap { min-height: 100vh; display: flex; flex-direction: column; }
.admin-login { flex: 1; display: flex; align-items: center; justify-content: center; padding: 48px 20px; }
.login-card { width: 100%; max-width: 420px; border: 1px solid var(--line); background: var(--panel2); padding: 40px; }
.login-card h1 { font-size: 30px; margin-top: 20px; }
.login-card .sub { margin-top: 8px; font-size: 14px; color: var(--muted); }
.login-hint { margin-top: 24px; border: 1px dashed var(--line2); padding: 14px; font-family: var(--mono); font-size: 12px; color: var(--muted); }
.login-hint b { color: var(--gold); }
.shake { animation: shake .4s; }
@keyframes shake { 25% { transform: translateX(-6px); } 50% { transform: translateX(6px); } 75% { transform: translateX(-4px); } }
.admin-err { color: var(--red); font-family: var(--mono); font-size: 12px; margin-top: 12px; min-height: 18px; }

.admin-head { border-bottom: 1px solid var(--line); padding: 16px 0; }
.admin-head .wrap { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.admin-body { flex: 1; padding: 40px 0 80px; }
.admin-banner { border: 1px dashed var(--line2); background: var(--panel2); padding: 16px 20px; font-size: 13px; color: var(--muted); margin-bottom: 32px; }
.admin-tabs { display: flex; gap: 6px; margin-bottom: 32px; border-bottom: 1px solid var(--line); }
.admin-tab { padding: 12px 18px; font-size: 14px; color: var(--muted); border-bottom: 2px solid transparent; margin-bottom: -1px; }
.admin-tab.on { color: var(--gold); border-bottom-color: var(--gold); font-weight: 700; }
.admin-tab .cnt { font-family: var(--mono); font-size: 10px; margin-left: 6px; color: var(--gold); }
.stat-cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); margin-bottom: 32px; }
@media (min-width: 768px) { .stat-cards { grid-template-columns: repeat(4, 1fr); } }
.stat-cards > div { background: var(--bg); padding: 20px; }
.stat-cards .n { font-family: var(--mono); font-size: 26px; font-weight: 700; color: var(--gold); }
.stat-cards .l { font-size: 12px; color: var(--muted); margin-top: 4px; }

.tbl { width: 100%; border-collapse: collapse; font-size: 14px; }
.tbl th { text-align: left; font-family: var(--mono); font-size: 11px; letter-spacing: .15em; color: var(--muted); padding: 12px; border-bottom: 1px solid var(--line); }
.tbl td { padding: 14px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.tbl tr:hover td { background: var(--panel2); }
.tbl .act { display: flex; gap: 8px; }
.mini-btn { border: 1px solid var(--line2); padding: 5px 12px; font-size: 12px; color: var(--muted); transition: all .2s; }
.mini-btn:hover { border-color: var(--gold); color: var(--gold); }
.mini-btn.danger:hover { border-color: var(--red); color: var(--red); }
.status-pill { display: inline-block; padding: 2px 10px; font-family: var(--mono); font-size: 11px; border: 1px solid var(--line2); color: var(--muted); }
.status-pill.dev { color: var(--gold); border-color: rgba(37,99,235,.5); }
.status-pill.online { color: var(--green); border-color: rgba(22,163,74,.5); }
.status-pill.done { color: var(--ink2); border-color: var(--line2); }

.fb-item { border: 1px solid var(--line); background: var(--panel2); padding: 20px; margin-bottom: 16px; }
.fb-item .fb-top { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.fb-item .fb-title { font-weight: 700; }
.fb-item .fb-time { margin-left: auto; font-family: var(--mono); font-size: 11px; color: var(--faint); }
.fb-item .fb-detail { margin-top: 10px; font-size: 14px; color: var(--muted); line-height: 1.8; }
.fb-item .fb-ops { margin-top: 14px; display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.fb-item .fb-contact { font-family: var(--mono); font-size: 12px; color: var(--muted); }
.empty-tip { text-align: center; padding: 64px 0; color: var(--faint); font-family: var(--mono); font-size: 13px; }

/* ---------- 页脚 ---------- */
.footer { border-top: 1px solid var(--line); background: var(--bg); }
.footer .f-marquee { border-bottom: 1px solid var(--line); padding: 40px 0; }
.footer .f-marquee a { font-weight: 800; letter-spacing: -.045em; font-size: clamp(36px, 6.5vw, 84px); white-space: nowrap; }
.footer .f-marquee a:hover { color: var(--gold); }
.footer .f-grid { display: grid; gap: 40px; padding: 56px 0; }
@media (min-width: 900px) { .footer .f-grid { grid-template-columns: 1.5fr 1fr 1fr 1.2fr; } }
.footer .f-cap { font-family: var(--mono); font-size: 11px; letter-spacing: .25em; color: var(--muted); text-transform: uppercase; margin-bottom: 16px; }
.footer ul { list-style: none; }
.footer li { margin-top: 10px; }
.footer li a { font-size: 14px; color: var(--ink2); }
.footer .f-info { font-size: 13px; color: var(--muted); line-height: 2; }
.footer .f-info a { color: var(--ink2); border-bottom: 1px solid var(--line2); }
.footer .f-info a:hover { color: var(--gold); border-bottom-color: var(--gold); }
.footer .f-bottom {
  border-top: 1px solid var(--line); padding: 20px 0;
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px;
  font-family: var(--mono); font-size: 11px; letter-spacing: .15em; color: var(--faint);
}
.f-brand-desc { margin-top: 18px; max-width: 400px; font-size: 14px; color: var(--muted); line-height: 1.8; }

/* ---------- 杂项 ---------- */
.notice { border: 1px dashed var(--line2); background: var(--panel2); padding: 20px 24px; font-size: 13px; color: var(--muted); line-height: 1.8; }
.grid-2 { display: grid; gap: 40px; }
@media (min-width: 1024px) { .grid-2 { grid-template-columns: 1fr 1fr; } }
.grid-2-1 { display: grid; gap: 40px; }
@media (min-width: 1024px) { .grid-2-1 { grid-template-columns: 1.2fr 1fr; } }
.mt-8 { margin-top: 32px; } .mt-10 { margin-top: 40px; } .mt-14 { margin-top: 56px; }
.tc { text-align: center; }
.hidden { display: none !important; }

/* ============================================================
   首页 V3（2026-11 二次重构）— 明亮蓝白主题
   ============================================================ */

/* ---------- 图片兜底：加载失败时呈现浅色品牌渐变面，杜绝破图 ---------- */
.img-dead {
  background:
    radial-gradient(120% 90% at 18% 8%, rgba(37,99,235,.12), transparent 55%),
    linear-gradient(150deg, #eef2f9 0%, #dce4f1 70%);
}

/* ---------- HERO 轮播（位于实底头部之下，不再互相遮挡） ---------- */
.hero-v2 {
  position: relative;
  height: calc(100svh - var(--nav-h));
  min-height: 560px;
  max-height: 820px;
  overflow: hidden;
  background: #e8edf5;
  outline-offset: -2px;
}
.hv-track { position: absolute; inset: 0; }
.hv-slide {
  position: absolute; inset: 0;
  opacity: 0; visibility: hidden;
  transition: opacity .7s ease, visibility 0s linear .7s;
}
.hv-slide.on {
  opacity: 1; visibility: visible;
  transition: opacity .7s ease, visibility 0s;
  z-index: 1;
}
.hv-media { position: absolute; inset: 0; }
.hv-media img {
  width: 100%; height: 100%;
  object-fit: cover; object-position: center;
  display: block;
}
/* 明图配白纱：左侧文字区压白，右侧透出画面 */
.hv-shade {
  position: absolute; inset: 0; z-index: 1;
  background:
    linear-gradient(90deg, rgba(255,255,255,.96) 0%, rgba(255,255,255,.88) 34%, rgba(255,255,255,.42) 56%, rgba(255,255,255,0) 76%),
    linear-gradient(0deg, rgba(244,247,252,.5) 0%, rgba(244,247,252,0) 24%);
}
.hv-copy {
  position: relative; z-index: 2;
  height: 100%;
  display: flex; flex-direction: column; justify-content: center;
  padding: 0 104px 48px;
  max-width: 980px;
}
.hv-eyebrow {
  font-family: var(--mono);
  font-size: 12px; letter-spacing: .28em; text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 16px;
}
.hv-title {
  font-size: clamp(34px, 6vw, 56px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.18;
  color: var(--ink);
}
.hv-sub {
  margin-top: 16px;
  font-size: 17px; line-height: 1.8;
  color: var(--ink2);
  max-width: 560px;
}
.hv-cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 32px; }
.hv-ghost { border-color: rgba(20,33,61,.35); color: var(--ink); }
.hv-ghost:hover { border-color: var(--gold); color: var(--gold); }

/* 切换按钮：钉死在画面垂直正中间、左右对称；白瓷磨砂 */
.hv-arrow {
  position: absolute; top: 50%; transform: translateY(-50%);
  z-index: 3;
  width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,.82);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(20,33,61,.16);
  color: var(--ink);
  transition: background .25s, border-color .25s, transform .25s;
}
.hv-prev { left: 28px; }
.hv-next { right: 28px; }
.hv-arrow:hover {
  background: #fff;
  border-color: var(--gold);
  color: var(--gold);
  transform: translateY(-50%) scale(1.05);
}

/* 圆点指示器：底部水平居中 */
.hv-dots {
  position: absolute; left: 50%; bottom: 30px; transform: translateX(-50%);
  z-index: 3;
  display: flex; align-items: center; gap: 12px;
}
.hv-dot {
  width: 8px; height: 8px; border-radius: 99px;
  background: rgba(20,33,61,.3);
  padding: 6px; margin: -6px;
  background-clip: content-box;
  transition: background .25s, width .25s;
}
.hv-dot.on { width: 22px; background: var(--gold); background-clip: content-box; }

/* ---------- 能力条：全宽细格规格栏（原滚动跑马灯移除） ---------- */
.feat-strip { border-bottom: 1px solid var(--line); }
.feat-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px;
  background: var(--line);
}
.feat-cell {
  background: #fff;
  padding: 17px 8px;
  text-align: center;
  font-family: var(--mono); font-size: 12.5px; letter-spacing: .06em;
  color: var(--ink2); white-space: nowrap;
  transition: color .2s, background .2s;
}
.feat-cell:hover { color: var(--gold); background: #f6f9ff; }
@media (min-width: 640px) { .feat-grid { grid-template-columns: repeat(4, 1fr); } }
@media (min-width: 1100px) { .feat-grid { grid-template-columns: repeat(8, 1fr); } }

/* ---------- 快速通道 / 案例：图卡 ---------- */
.qa-grid, .cv-grid { display: grid; gap: 24px; }
@media (min-width: 1024px) { .qa-grid, .cv-grid { grid-template-columns: repeat(3, 1fr); } }
.qa-card, .cv-card {
  display: flex; flex-direction: column; height: 100%;
  border: 1px solid var(--line); background: var(--panel);
  transition: border-color .3s, box-shadow .3s;
}
.qa-card:hover, .cv-card:hover { border-color: rgba(37,99,235,.45); box-shadow: 0 14px 34px rgba(20,33,61,.08); }
.qa-img, .cv-img {
  position: relative; display: block;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(150deg, #e9eef6, #dbe3ef);
}
.qa-img img, .cv-img img {
  width: 100%; height: 100%;
  object-fit: cover; object-position: center;
  display: block;
  transition: transform .6s cubic-bezier(.2,.6,.2,1);
}
.qa-card:hover .qa-img img, .cv-card:hover .cv-img img { transform: scale(1.04); }
.qa-body { padding: 32px; display: flex; flex-direction: column; flex: 1; }
.qa-no { font-family: var(--mono); font-size: 13px; color: var(--gold); }
.qa-t { display: block; font-size: 20px; font-weight: 700; letter-spacing: -.02em; margin-top: 14px; transition: color .2s; }
.qa-card:hover .qa-t { color: var(--gold); }
.qa-d { display: block; margin-top: 10px; font-size: 14px; line-height: 1.75; color: var(--muted); flex: 1; }
.qa-go { display: block; margin-top: 20px; font-family: var(--mono); font-size: 12px; color: var(--gold); }
.cv-body { padding: 28px 32px 32px; display: flex; flex-direction: column; flex: 1; }
.cv-body h3 { font-size: 20px; font-weight: 700; letter-spacing: -.02em; transition: color .2s; }
.cv-card:hover .cv-body h3 { color: var(--gold); }
.cv-body .desc { margin-top: 10px; font-size: 14px; color: var(--muted); line-height: 1.8; flex: 1; }
.cv-img .wv-badge { border: 1px solid rgba(37,99,235,.3); }

/* ---------- 开发笔记：左栏固定 + 编辑式文章行 ---------- */
.notes-split { display: grid; gap: 48px; }
@media (min-width: 1024px) {
  .notes-split { grid-template-columns: 320px 1fr; gap: 64px; align-items: start; }
  .notes-head { position: sticky; top: calc(var(--nav-h) + 24px); }
}
.notes-head .sub { margin-top: 14px; color: var(--muted); font-size: 15px; line-height: 1.8; }
.notes-more { margin-top: 32px; }

/* ---------- 平台介绍：左文右图 ---------- */
.split-2 { display: grid; gap: 48px; align-items: center; }
@media (min-width: 1024px) { .split-2 { grid-template-columns: 1fr 1fr; gap: 64px; } }
.sec-sub { margin-top: 20px; max-width: 560px; color: var(--muted); font-size: 16px; line-height: 1.85; }
.pf-img {
  aspect-ratio: 4 / 3;
  border: 1px solid var(--line);
  overflow: hidden;
  background: linear-gradient(150deg, #e9eef6, #dbe3ef);
}
.pf-img img {
  width: 100%; height: 100%;
  object-fit: cover; object-position: center;
  display: block;
}
.pl-rows { margin-top: 32px; border-bottom: 1px solid var(--line); }
.pl-row {
  display: grid; grid-template-columns: 44px 1fr; gap: 4px 16px; align-items: baseline;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}
.pl-row .no { font-family: var(--mono); font-size: 12px; color: var(--gold); }
.pl-row b { font-size: 15px; font-weight: 600; }
.pl-row .d { grid-column: 2; font-size: 13px; color: var(--muted); line-height: 1.7; }
@media (min-width: 640px) {
  .pl-row { grid-template-columns: 44px 168px 1fr; }
  .pl-row .d { grid-column: 3; }
}
.split-cta { margin-top: 32px; }

/* ---------- 宣言横幅：整幅明图 + 白纱 ---------- */
.band21 {
  position: relative;
  min-height: 62vh;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
  background: #eef2f8;
}
.band-media { position: absolute; inset: 0; }
.band-media img {
  width: 100%; height: 100%;
  object-fit: cover; object-position: center;
  display: block;
}
.band-shade { position: absolute; inset: 0; background: rgba(246,248,252,.66); }
.band-copy {
  position: relative; z-index: 1;
  text-align: center;
  padding: 96px 40px;
}
.band-t {
  margin-top: 16px;
  font-size: clamp(26px, 3.6vw, 40px);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.4;
  color: var(--ink);
}

/* ---------- 区块头：左标题 + 右链接 ---------- */
.head-split { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: 40px; }
.head-split h2 { font-size: clamp(24px, 3vw, 36px); margin-top: 12px; }
.head-more { margin-bottom: 6px; }

/* ---------- 数据 + 承诺 ---------- */
.stat-v2 {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px;
  background: var(--line); border: 1px solid var(--line);
}
@media (min-width: 900px) { .stat-v2 { grid-template-columns: repeat(4, 1fr); } }
.stat-v2 > div { background: var(--bg); padding: 32px 24px; }
.stat-v2 .n {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(34px, 4vw, 52px);
  font-weight: 700; color: var(--gold);
  line-height: 1;
}
.stat-v2 .n i { font-style: normal; font-size: .62em; margin-left: 2px; }
.stat-v2 .l { margin-top: 12px; font-size: 14px; color: var(--muted); }
.trust-line {
  display: flex; flex-wrap: wrap; gap: 12px 32px;
  margin-top: 32px;
  font-family: var(--mono); font-size: 13px; color: var(--muted);
}
.trust-line b { color: var(--gold); font-weight: 700; margin-right: 4px; }
.cmt-rows { margin-top: 48px; border-bottom: 1px solid var(--line); }
.cmt-row {
  display: grid; grid-template-columns: 44px 1fr; gap: 4px 16px; align-items: baseline;
  padding: 20px 0;
  border-top: 1px solid var(--line);
}
.cmt-row .no { font-family: var(--mono); font-size: 13px; color: var(--gold); }
.cmt-row b { font-size: 17px; font-weight: 600; }
.cmt-row .d { grid-column: 2; font-size: 14px; color: var(--muted); line-height: 1.8; }
@media (min-width: 768px) {
  .cmt-row { grid-template-columns: 56px 200px 1fr; }
  .cmt-row .d { grid-column: 3; }
}

/* ---------- 导航下拉箭头（SVG chevron，随字号略放大） ---------- */
.nav-caret { width: 11px; height: 7px; color: var(--muted); transition: transform .2s, color .2s; }
.nav-item:hover .nav-caret { transform: rotate(180deg); color: var(--gold); }

/* ---------- 修复（全站）：移动菜单打开时汉堡按钮被菜单层盖住无法关闭 ---------- */
.site-header.menu-open { z-index: 100; }

/* ---------- HERO 响应式 ---------- */
@media (max-width: 1100px) {
  .hv-arrow { display: none; }
  .hv-copy { padding: 0 40px 48px; }
}
@media (max-width: 767px) {
  :root { --nav-h: 64px; }
  .brand .logo { width: 38px; height: 38px; font-size: 16px; }
  .hero-v2 { min-height: 520px; }
  /* 移动端画面窄：白纱整体加宽加实，保证文案全程可读 */
  .hv-shade {
    background:
      linear-gradient(90deg, rgba(255,255,255,.95) 0%, rgba(255,255,255,.9) 52%, rgba(255,255,255,.62) 78%, rgba(255,255,255,.3) 100%),
      linear-gradient(0deg, rgba(244,247,252,.55) 0%, rgba(244,247,252,0) 26%);
  }
  .hv-copy { padding: 0 24px 72px; }
  .hv-sub { font-size: 15px; }
  .hv-dots { bottom: 20px; }
  .qa-body { padding: 24px; }
  .cv-body { padding: 24px; }
  .feat-cell { padding: 14px 6px; font-size: 12px; }
}

/* ---------- 减少动态偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .hv-slide { transition: none; }
  .qa-img img, .cv-img img { transition: none; }
}

/* ---------- AI 主题强调：蓝→紫渐变，仅用于 AI 关键词 ---------- */
.grad-text {
  background: linear-gradient(92deg, #2563eb 10%, #7c3aed 90%);
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
}

/* ---------- AI × 全流程 ---------- */
.ai-sec { background: linear-gradient(180deg, #f4f7fc 0%, #ebf1fa 100%); }
.ai-grid {
  display: grid; grid-template-columns: 1fr; gap: 1px;
  background: var(--line); border: 1px solid var(--line);
  margin-top: 48px;
}
@media (min-width: 640px) { .ai-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1100px) { .ai-grid { grid-template-columns: repeat(3, 1fr); } }
.ai-cell {
  position: relative;
  background: #fff;
  padding: 28px 26px;
  transition: background .25s;
}
.ai-cell:hover { background: #f6f9ff; }
.ai-ic {
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  color: var(--gold);
  border: 1px solid rgba(37,99,235,.28);
  margin-bottom: 16px;
}
.ai-ic svg { width: 22px; height: 22px; }
.ai-cell .no {
  position: absolute; top: 30px; right: 24px;
  font-family: var(--mono); font-size: 11px; letter-spacing: .2em; color: var(--faint);
}
.ai-cell b { display: block; font-size: 17px; font-weight: 700; letter-spacing: -.01em; }
.ai-cell .d { display: block; margin-top: 8px; font-size: 13.5px; color: var(--muted); line-height: 1.75; }

/* 多语言发布带 */
.lang-band {
  margin-top: 32px;
  border: 1px solid var(--line); background: #fff;
  padding: 22px 26px;
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center;
  gap: 12px 14px;
}
.lang-lead {
  font-family: var(--mono); font-size: 11px; letter-spacing: .28em;
  color: var(--muted); margin-right: 10px;
}
.lang-pill {
  font-family: var(--mono); font-size: 13px; font-weight: 700; letter-spacing: .12em;
  color: var(--ink2); border: 1px solid var(--line2); padding: 8px 18px;
  transition: border-color .2s, color .2s;
}
.lang-pill:hover { border-color: var(--gold); color: var(--gold); }