/* Shared styles for getlinda.app's inner pages (Features, Resources). The home page keeps its own inline styles;
   the tokens here match it. */
:root {
  --bg: #0b0b0e;
  --bg-2: #121217;
  --card: rgba(255,255,255,.035);
  --card-strong: rgba(255,255,255,.06);
  --line: rgba(255,255,255,.09);
  --text: #f5f5f7;
  --muted: #a1a1aa;
  --faint: #6b6b76;
  --accent: #ff4060;
  --accent-2: #ff8a5b;
  --accent-soft: rgba(255,64,96,.14);
  --green: #34c759;
  --amber: #ffb020;
  --glow: rgba(255,64,96,.30);
  --shadow: 0 30px 80px -20px rgba(0,0,0,.7), 0 0 0 1px rgba(255,255,255,.08);
  --radius: 20px;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Inter", "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, monospace;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #fbfbfd;
    --bg-2: #f2f2f5;
    --card: rgba(0,0,0,.025);
    --card-strong: rgba(0,0,0,.045);
    --line: rgba(0,0,0,.08);
    --text: #1d1d1f;
    --muted: #5b5b66;
    --faint: #8e8e98;
    --accent-soft: rgba(255,64,96,.10);
    --glow: rgba(255,64,96,.18);
    --shadow: 0 30px 80px -30px rgba(40,20,40,.3), 0 0 0 1px rgba(0,0,0,.06);
  }
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { background: var(--bg); color: var(--text); font-family: var(--font); -webkit-font-smoothing: antialiased; line-height: 1.6; overflow-x: hidden; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
.prose a, a.link { color: var(--accent); }
.prose a:hover, a.link:hover { text-decoration: underline; }
.prose a.btn, .prose a.btn:hover { color: #fff; text-decoration: none; }
.prose a.btn-ghost { color: var(--text); }
.prose a.card, .prose a.card:hover { color: inherit; text-decoration: none; }
.wrap { width: min(1180px, 100% - 32px); margin-inline: auto; }
.narrow { width: min(820px, 100% - 32px); margin-inline: auto; }
.grad { background: linear-gradient(100deg, var(--accent) 10%, var(--accent-2) 90%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.eyebrow { display: inline-flex; gap: 8px; font-size: 13px; font-weight: 600; color: var(--accent); letter-spacing: .02em; text-transform: uppercase; }
h1, h2, h3 { letter-spacing: -.03em; line-height: 1.1; font-weight: 700; }
.lead { font-size: clamp(17px, 1.6vw, 20px); color: var(--muted); max-width: 720px; }
.muted { color: var(--muted); }
code, .mono { font-family: var(--mono); font-size: .9em; }
:not(pre) > code { background: var(--card-strong); border: 1px solid var(--line); border-radius: 6px; padding: 1px 6px; overflow-wrap: anywhere; }
.prose td code { white-space: nowrap; }
pre { font-family: var(--mono); font-size: 14px; line-height: 1.55; background: var(--bg-2); border: 1px solid var(--line); border-radius: 14px; padding: 16px 18px; overflow-x: auto; }

/* Nav */
nav.top { position: sticky; top: 0; z-index: 50; backdrop-filter: saturate(180%) blur(20px); -webkit-backdrop-filter: saturate(180%) blur(20px); background: color-mix(in srgb, var(--bg) 72%, transparent); border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; letter-spacing: -.02em; }
.brand svg { width: 26px; height: 24px; }
/* NAV:START */
/* Menu */
nav.top .wrap { display: flex; align-items: center; justify-content: space-between; height: 60px; gap: 16px; }
.navlinks { display: flex; align-items: center; gap: 26px; font-size: 14px; color: var(--muted); }
.navlinks > a:hover, .navlinks > a[aria-current="page"], .dd:hover > .dd-top, .dd:focus-within > .dd-top, .dd-top[aria-current="page"] { color: var(--text); }
.nav-right { display: flex; align-items: center; gap: 10px; }
.dd { position: relative; }
.dd-top { display: inline-flex; align-items: center; gap: 4px; }
.dd-top svg { width: 10px; height: 10px; transition: transform .18s ease-out; }
.dd:hover .dd-top svg, .dd:focus-within .dd-top svg { transform: rotate(180deg); }
.dd-panel { position: absolute; top: 100%; left: 50%; transform: translate(-50%, 6px); padding-top: 14px; opacity: 0; visibility: hidden; transition: opacity .16s ease-out, transform .16s ease-out, visibility .16s; z-index: 60; }
.dd:hover .dd-panel, .dd:focus-within .dd-panel { opacity: 1; visibility: visible; transform: translate(-50%, 0); }
.dd-inner { display: grid; grid-template-columns: repeat(3, 210px); gap: 8px 18px; padding: 18px; border-radius: 18px; background: var(--bg-2); border: 1px solid var(--line); box-shadow: 0 24px 60px -20px rgba(0,0,0,.45); }
.dd-col b { display: block; font-size: 11px; text-transform: uppercase; letter-spacing: .06em; color: var(--faint); padding: 0 10px 6px; }
.dd-col a { display: block; padding: 8px 10px; border-radius: 10px; color: var(--text); font-weight: 600; font-size: 14px; line-height: 1.3; }
.dd-col a span { display: block; font-weight: 400; font-size: 12.5px; color: var(--muted); margin-top: 2px; }
.dd-col a:hover, .dd-col a:focus-visible { background: var(--card-strong); outline: none; }
.mnav { display: none; position: relative; padding: 0; border: 0; }
nav.top .mnav > summary { list-style: none; cursor: pointer; display: flex; align-items: center; justify-content: center; gap: 0; width: 34px; height: 34px; padding: 0; margin: 0; border-radius: 999px; border: 1px solid var(--line); background: var(--card-strong); color: var(--text); font-size: 0; line-height: 0; }
nav.top .mnav > summary::-webkit-details-marker { display: none; }
nav.top .mnav > summary::after { content: none; }
nav.top .mnav > summary svg { display: block; width: 18px; height: 18px; flex: none; }
nav.top .mnav[open] > summary { background: var(--card); }
.mnav-panel { position: absolute; right: 0; top: 48px; width: min(320px, calc(100vw - 32px)); max-height: calc(100vh - 80px); overflow-y: auto; padding: 12px; border-radius: 18px; background: var(--bg-2); border: 1px solid var(--line); box-shadow: 0 24px 60px -20px rgba(0,0,0,.5); z-index: 60; }
.mnav-panel a { display: block; padding: 10px 12px; border-radius: 10px; color: var(--text); font-weight: 600; font-size: 15px; }
.mnav-panel a:hover { background: var(--card-strong); }
.mnav-panel b { display: block; font-size: 11px; text-transform: uppercase; letter-spacing: .06em; color: var(--faint); padding: 12px 12px 4px; }
.mnav-panel .sub a { font-weight: 400; font-size: 14px; color: var(--muted); padding: 7px 12px 7px 22px; }
@media (max-width: 860px) { .navlinks { display: none; } .mnav { display: block; } }
.nav-right .btn-sm { height: 34px; }
@media (max-width: 350px) { .nav-right .btn-sm span { display: none; } }
.dd.lang .dd-top { font: inherit; font-size: 13px; font-weight: 600; color: var(--muted); background: none; border: 0; cursor: pointer; padding: 6px 4px; }
.dd.lang .dd-top svg:first-child { width: 15px; height: 15px; }
.dd.lang:hover .dd-top, .dd.lang:focus-within .dd-top { color: var(--text); }
.dd.lang .dd-panel { left: auto; right: -8px; transform: translateY(6px); }
.dd.lang:hover .dd-panel, .dd.lang:focus-within .dd-panel { transform: translateY(0); }
.dd.lang .dd-inner { grid-template-columns: 160px; padding: 8px; gap: 2px; }
.dd.lang .dd-inner a { display: block; padding: 8px 12px; border-radius: 10px; color: var(--text); font-size: 14px; }
.dd.lang .dd-inner a:hover, .dd.lang .dd-inner a:focus-visible { background: var(--card-strong); outline: none; }
.dd.lang .dd-inner a[aria-current] { color: var(--accent); font-weight: 600; }
.mnav-panel .langs a[aria-current] { color: var(--accent); }
@media (max-width: 860px) { .dd.lang { display: none; } }
footer.site .legal { font-size: 12px; margin-top: 32px; }
footer.site form.news { margin-top: 32px; max-width: 520px; }
footer.site form.news .row { display: flex; gap: 8px; }
footer.site form.news input[type=email] { flex: 1; min-width: 0; height: 34px; padding: 0 12px; border-radius: 999px; border: 1px solid var(--line); background: var(--card-strong); color: var(--text); font: inherit; font-size: 14px; }
footer.site form.news .hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
footer.site form.news .consent, footer.site form.news .said { font-size: 12px; color: var(--muted); margin-top: 8px; }
:lang(zh-Hans) body { font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", sans-serif; }
:lang(zh-Hans) h1, :lang(zh-Hans) h2, :lang(zh-Hans) h3 { letter-spacing: 0; }
/* NAV:END */
.btn { display: inline-flex; align-items: center; gap: 10px; border-radius: 999px; font-weight: 600; font-size: 16px; padding: 14px 24px; transition: transform .18s ease-out, box-shadow .18s ease-out, background .18s; white-space: nowrap; }
.btn svg { width: 18px; height: 18px; }
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 10px 40px -8px var(--glow), inset 0 1px 0 rgba(255,255,255,.25); }
.btn-primary:hover { transform: translateY(-1px); }
.btn-ghost { background: var(--card-strong); border: 1px solid var(--line); }
.btn-sm { padding: 8px 16px; font-size: 14px; }

/* Page head */
.page-head { position: relative; padding: 80px 0 48px; isolation: isolate; }
.page-head::before { content: ""; position: absolute; inset: -160px 0 auto; height: 600px; z-index: -1; background: radial-gradient(560px 320px at 50% 30%, var(--glow), transparent 70%); filter: blur(10px); }
.page-head h1 { font-size: clamp(38px, 6.4vw, 72px); margin: 14px 0 20px; }
.crumbs { font-size: 13px; color: var(--faint); display: flex; gap: 8px; flex-wrap: wrap; }
.crumbs a:hover { color: var(--text); }
.meta { margin-top: 18px; font-size: 14px; color: var(--faint); }

/* Layout with a table of contents */
.doc { display: grid; grid-template-columns: 220px 1fr; gap: 56px; padding-bottom: 96px; }
@media (max-width: 960px) { .doc { grid-template-columns: 1fr; gap: 24px; } .toc { position: static !important; } }
.toc { position: sticky; top: 84px; align-self: start; font-size: 14px; }
.toc b { display: block; font-size: 12px; text-transform: uppercase; letter-spacing: .05em; color: var(--faint); margin-bottom: 10px; }
.toc ol { list-style: none; display: grid; gap: 6px; border-left: 1px solid var(--line); }
.toc a { display: block; padding: 2px 0 2px 14px; margin-left: -1px; border-left: 1px solid transparent; color: var(--muted); }
.toc a:hover { color: var(--text); border-left-color: var(--accent); }
@media (max-width: 960px) { .toc ol { display: flex; flex-wrap: wrap; gap: 8px; border: 0; } .toc a { border: 1px solid var(--line); border-radius: 999px; padding: 4px 12px; margin: 0; } }

/* Content */
.prose { min-width: 0; }
.prose > section { padding-top: 24px; margin-bottom: 64px; scroll-margin-top: 80px; }
.prose h2 { font-size: clamp(28px, 3.6vw, 40px); margin-bottom: 14px; }
.prose h3 { font-size: 20px; margin: 28px 0 8px; letter-spacing: -.01em; }
.prose p, .prose li { color: var(--muted); font-size: 17px; }
.prose p + p { margin-top: 12px; }
.prose ul, .prose ol { padding-left: 22px; display: grid; gap: 8px; margin: 12px 0; }
.prose strong { color: var(--text); font-weight: 600; }
.prose figure { margin: 28px 0; }
.prose figure img { border-radius: 14px; box-shadow: var(--shadow); }
.prose figcaption { font-size: 14px; color: var(--faint); margin-top: 12px; text-align: center; }
.prose table { width: 100%; border-collapse: collapse; font-size: 15px; margin: 18px 0; }
.prose th, .prose td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
.prose th { font-size: 12px; text-transform: uppercase; letter-spacing: .05em; color: var(--faint); font-weight: 600; }
.prose td { color: var(--muted); }
.prose td:first-child { color: var(--text); font-weight: 600; }
.table-scroll { margin: 18px 0; overflow-x: auto; border: 1px solid var(--line); border-radius: 16px; background: var(--card); }
.table-scroll table { margin: 0; }
.table-scroll tr:last-child td { border-bottom: 0; }

/* Cards and grids */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin: 20px 0; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 20px 0; }
@media (max-width: 860px) { .grid-2, .grid-3 { grid-template-columns: 1fr; } }
.card { position: relative; border-radius: var(--radius); padding: 24px; background: var(--card); border: 1px solid var(--line); transition: border-color .2s; }
a.card:hover { border-color: color-mix(in srgb, var(--accent) 45%, var(--line)); }
.card h3 { font-size: 19px; margin: 0 0 8px; color: var(--text); }
.card p { font-size: 15px; color: var(--muted); }
.card .kicker { font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: .05em; color: var(--accent); margin-bottom: 10px; display: block; }
.card .more { display: inline-block; margin-top: 14px; font-size: 14px; font-weight: 600; color: var(--accent); }
.ico { width: 40px; height: 40px; border-radius: 11px; display: grid; place-items: center; background: var(--accent-soft); color: var(--accent); margin-bottom: 14px; }
.ico svg { width: 20px; height: 20px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.chips span { font-size: 12.5px; font-family: var(--mono); color: var(--muted); padding: 4px 9px; border-radius: 8px; border: 1px solid var(--line); background: var(--card-strong); }
.status { display: inline-block; font-size: 11.5px; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; padding: 3px 8px; border-radius: 999px; vertical-align: 2px; margin-left: 6px; }
.status.shipped { color: var(--green); background: color-mix(in srgb, var(--green) 14%, transparent); }
.status.progress { color: var(--amber); background: color-mix(in srgb, var(--amber) 16%, transparent); }
.status.planned { color: var(--muted); background: var(--card-strong); }
.callout { border-radius: 16px; padding: 18px 20px; background: var(--accent-soft); border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent); margin: 20px 0; }
.callout p { color: var(--text); font-size: 16px; }

/* Architecture diagram */
.diagram { border-radius: 20px; background: var(--card); border: 1px solid var(--line); padding: 20px; margin: 24px 0; overflow-x: auto; }
.diagram svg { display: block; width: 100%; min-width: 720px; height: auto; }
.diagram text { font-family: var(--font); fill: var(--text); }
.diagram .t { font-size: 15px; font-weight: 700; }
.diagram .t2 { font-size: 14px; font-weight: 700; }
.diagram .s, .diagram .sub { font-size: 12px; fill: var(--muted); }
.diagram .l { font-size: 11.5px; fill: var(--muted); }
.diagram .l.acc { fill: var(--accent); font-weight: 600; }
.diagram .lane { font-size: 11px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; fill: var(--faint); }
.diagram .box { fill: var(--card-strong); stroke: var(--line); }
.diagram .inner { fill: var(--bg); stroke: var(--line); }
.diagram .hot { fill: var(--accent-soft); stroke: color-mix(in srgb, var(--accent) 45%, transparent); }
.diagram .gate { fill: var(--accent-soft); stroke: var(--accent); stroke-width: 1.5; }
.diagram .opt { fill: none; stroke: var(--faint); stroke-dasharray: 6 5; }
.diagram .mac { fill: color-mix(in srgb, var(--accent) 3%, transparent); stroke: color-mix(in srgb, var(--accent) 35%, transparent); stroke-width: 1.5; }
.diagram .net { fill: none; stroke: var(--line); stroke-dasharray: 6 6; }
.diagram .gl { color: var(--accent); }
.diagram .edge { stroke: var(--faint); stroke-width: 1.6; fill: none; }
.diagram .edge.soft { stroke-dasharray: 2 4; }
.diagram .optline { stroke: var(--faint); stroke-width: 1.6; stroke-dasharray: 6 5; fill: none; }
.diagram .ask { stroke: var(--accent); stroke-width: 1.8; stroke-dasharray: 6 4; fill: none; }
.diagram .ah { fill: var(--faint); }
.diagram .aha { fill: var(--accent); }

/* Closing call to action */
.cta { text-align: center; border-radius: 28px; padding: 64px 24px; border: 1px solid var(--line); background: radial-gradient(500px 240px at 50% 110%, var(--glow), transparent 70%), var(--card); margin: 32px 0 96px; }
.cta h2 { font-size: clamp(30px, 4.6vw, 52px); }
.cta p { color: var(--muted); margin: 14px auto 0; max-width: 560px; }
.cta .btn { margin-top: 28px; }

footer.site { border-top: 1px solid var(--line); padding: 48px 0 64px; font-size: 14px; color: var(--faint); }
footer.site .cols { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 32px; }
@media (max-width: 760px) { footer.site .cols { grid-template-columns: 1fr 1fr; } }
footer.site h4 { font-size: 13px; color: var(--text); margin-bottom: 12px; }
footer.site ul { list-style: none; display: grid; gap: 8px; }
footer.site a:hover { color: var(--text); }
footer.site .legal { margin-top: 32px; font-size: 12px; }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; } html { scroll-behavior: auto; } }