/* ==========================================================================
   Plus1 Compute — Design System
   Material Design 3 tokens + components.
   ========================================================================== */

/* ---------- 0. Webfonts ----------
   Chinese: Aidian FengYaHei, served as a unicode-range subset set (the browser
   fetches only the slices a page actually uses).
   Latin/digits: ZSFT-2163. Both from ZeoSeven; @import must precede all rules.
   Both use font-display:swap, so text paints in the fallback stack immediately
   and never blocks first render if the CDN is slow. */
@import url("https://fontsapi.zeoseven.com/354/main/result.css");

@font-face{font-family:"ZSFT-2163";src:url("https://fontsapi.zeoseven.com/2163/main.woff2") format("woff2");font-style:normal;font-weight:400;font-display:swap;}
@font-face{font-family:"ZSFT-2163";src:url("https://fontsapi.zeoseven.com/2163/italic.woff2") format("woff2");font-style:italic;font-weight:400;font-display:swap;}
@font-face{font-family:"ZSFT-2163";src:url("https://fontsapi.zeoseven.com/2163/text.woff2") format("woff2");font-style:normal;font-weight:450;font-display:swap;}
@font-face{font-family:"ZSFT-2163";src:url("https://fontsapi.zeoseven.com/2163/text-italic.woff2") format("woff2");font-style:italic;font-weight:450;font-display:swap;}

/* ---------- 1. Tokens: tonal palettes ---------- */
:root {
  /* Brand (blue, hue ~230) */
  --brand-0:#000000;  --brand-10:#001849; --brand-20:#002a78; --brand-30:#003ea8;
  --brand-40:#1d4ed8; --brand-50:#3b6ae8; --brand-60:#6b8ff0; --brand-70:#9ab4f7;
  --brand-80:#c3d4fb; --brand-90:#e0e9fe; --brand-95:#f0f4ff; --brand-99:#fbfcff;

  /* Accent (teal) */
  --teal-10:#00201c; --teal-20:#00382f; --teal-30:#005046; --teal-40:#00796b;
  --teal-50:#009e8c; --teal-60:#2ec4b1; --teal-70:#5fdfcb; --teal-80:#7ce0d4;
  --teal-90:#b8f3ea; --teal-95:#dcfaf5;

  /* Tertiary (amber, used sparingly) */
  --amber-30:#6b4500; --amber-40:#8f5e00; --amber-70:#f0b429; --amber-90:#ffeeca;

  /* Neutral */
  --n-0:#000000;  --n-6:#0e1013;  --n-10:#1a1c1e; --n-15:#25272a; --n-20:#2f3033;
  --n-25:#3a3c3f; --n-30:#45474a; --n-40:#5d5e62; --n-50:#76777a; --n-60:#909194;
  --n-70:#ababae; --n-80:#c7c6ca; --n-90:#e3e2e6; --n-94:#eeedf1; --n-96:#f4f3f7;
  --n-98:#faf9fd; --n-100:#ffffff;

  /* Semantic status */
  --error-40:#b3261e; --error-90:#f9dedc; --error-70:#f2b8b5;
  --success-40:#146c2e; --success-90:#d7f2dd;
  --warn-40:#8f5e00;   --warn-90:#ffeeca;

  /* Shape */
  --r-xs:4px; --r-sm:8px; --r-md:12px; --r-lg:16px; --r-xl:24px;
  --r-2xl:32px; --r-full:999px;

  /* Motion */
  --ease-standard:cubic-bezier(.2,0,0,1);
  --ease-emphasized:cubic-bezier(.2,0,0,1);
  --ease-decel:cubic-bezier(0,0,0,1);
  --dur-1:120ms; --dur-2:200ms; --dur-3:320ms; --dur-4:480ms;

  /* Layout */
  --max-w:1200px;
  --max-w-narrow:760px;
  --gutter:24px;
  --nav-h:68px;

  /* Type */
  /* ZSFT-2163 covers Latin/digits, Aidian FengYaHei covers CJK — listing the
     Latin face first lets each script fall to the intended font. */
  --font-sans:"ZSFT-2163","Aidian FengYaHei","Segoe UI",system-ui,-apple-system,
    "PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-mono:ui-monospace,"SF Mono","JetBrains Mono","Cascadia Code",
    Menlo,Consolas,"Liberation Mono",monospace;
}

/* ---------- 2. Theme: light (default) ---------- */
:root, [data-theme="light"] {
  --primary:var(--brand-40);           --on-primary:var(--n-100);
  --primary-container:var(--brand-90); --on-primary-container:var(--brand-10);
  --primary-hover:var(--brand-30);
  --secondary:var(--teal-40);          --on-secondary:var(--n-100);
  --secondary-container:var(--teal-90);--on-secondary-container:var(--teal-10);
  --tertiary:var(--amber-40);          --tertiary-container:var(--amber-90);

  --background:var(--n-100);
  --surface:var(--n-100);
  --surface-dim:var(--n-96);
  --surface-1:var(--n-98);
  --surface-2:var(--n-96);
  --surface-3:var(--n-94);
  --on-surface:var(--n-10);
  --on-surface-variant:var(--n-40);
  --on-surface-muted:var(--n-50);
  --outline:var(--n-60);
  --outline-variant:var(--n-90);
  --inverse-surface:var(--n-20);
  --on-inverse-surface:var(--n-96);

  --error:var(--error-40); --error-container:var(--error-90);
  --success:var(--success-40); --success-container:var(--success-90);
  --warn:var(--warn-40); --warn-container:var(--warn-90);

  --code-bg:var(--n-6); --code-fg:#e6e6e6;
  --scrim:rgba(0,0,0,.42);

  --el-1:0 1px 2px rgba(0,0,0,.06), 0 1px 3px 1px rgba(0,0,0,.05);
  --el-2:0 1px 2px rgba(0,0,0,.06), 0 2px 6px 2px rgba(0,0,0,.06);
  --el-3:0 4px 8px 3px rgba(0,0,0,.06), 0 1px 3px rgba(0,0,0,.08);
  --el-4:0 6px 10px 4px rgba(0,0,0,.07), 0 2px 3px rgba(0,0,0,.08);
  --hero-glow-a:rgba(29,78,216,.16);
  --hero-glow-b:rgba(0,169,157,.14);
  --grid-line:rgba(0,0,0,.045);
}

/* ---------- 3. Theme: dark ---------- */
[data-theme="dark"] {
  --primary:var(--brand-70);           --on-primary:var(--brand-20);
  --primary-container:var(--brand-30); --on-primary-container:var(--brand-90);
  --primary-hover:var(--brand-80);
  --secondary:var(--teal-70);          --on-secondary:var(--teal-20);
  --secondary-container:var(--teal-30);--on-secondary-container:var(--teal-90);
  --tertiary:var(--amber-70);          --tertiary-container:var(--amber-30);

  --background:var(--n-6);
  --surface:var(--n-6);
  --surface-dim:var(--n-0);
  --surface-1:var(--n-10);
  --surface-2:var(--n-15);
  --surface-3:var(--n-20);
  --on-surface:var(--n-94);
  --on-surface-variant:var(--n-80);
  --on-surface-muted:var(--n-70);
  --outline:var(--n-50);
  --outline-variant:var(--n-25);
  --inverse-surface:var(--n-90);
  --on-inverse-surface:var(--n-20);

  --error:var(--error-70); --error-container:#8c1d18;
  --success:#7ddc96; --success-container:#0a4a1d;
  --warn:var(--amber-70); --warn-container:var(--amber-30);

  --code-bg:#08090b; --code-fg:#e6e6e6;
  --scrim:rgba(0,0,0,.6);

  --el-1:0 1px 2px rgba(0,0,0,.4), 0 1px 3px 1px rgba(0,0,0,.3);
  --el-2:0 1px 2px rgba(0,0,0,.4), 0 2px 6px 2px rgba(0,0,0,.35);
  --el-3:0 4px 8px 3px rgba(0,0,0,.4), 0 1px 3px rgba(0,0,0,.4);
  --el-4:0 6px 10px 4px rgba(0,0,0,.45), 0 2px 3px rgba(0,0,0,.4);
  --hero-glow-a:rgba(59,106,232,.22);
  --hero-glow-b:rgba(0,169,157,.16);
  --grid-line:rgba(255,255,255,.05);
}

/* ---------- 4. Reset & base ---------- */
*,*::before,*::after{box-sizing:border-box}
html{
  -webkit-text-size-adjust:100%;scroll-behavior:smooth;
  scroll-padding-top:calc(var(--nav-h) + 16px);
  /* The closed off-canvas drawer is position:fixed at translateX(100%), so only
     a clip at the root contains it. `clip` (not `hidden`) keeps sticky working. */
  overflow-x:clip;
}
body{
  margin:0;font-family:var(--font-sans);background:var(--background);color:var(--on-surface);
  font-size:16px;line-height:1.65;letter-spacing:.01em;
  /* clip, not hidden: the closed off-canvas drawer sits at translateX(100%) and
     would otherwise add horizontal scroll. `hidden` would break position:sticky. */
  overflow-x:clip;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  transition:background-color var(--dur-3) var(--ease-standard),color var(--dur-3) var(--ease-standard);
}
img,svg,video{max-width:100%;height:auto;display:block}
/* Safety net: an inline icon with no sizing rule renders at its intrinsic box
   and wrecks the layout. Scoped so deliberately-large marks keep their size;
   any component rule later in the file still wins on specificity. */
svg[aria-hidden="true"]:not(.brand-mark){width:1.25em;height:1.25em;flex:none}
.post-thumb svg{width:46px;height:46px}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
button{font:inherit;color:inherit}
ul,ol{padding-left:1.25em}
hr{border:0;border-top:1px solid var(--outline-variant);margin:40px 0}
:focus-visible{outline:3px solid var(--primary);outline-offset:2px;border-radius:var(--r-xs)}
::selection{background:var(--primary-container);color:var(--on-primary-container)}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important}
}

/* ---------- 5. Typography ---------- */
h1,h2,h3,h4,h5{margin:0 0 .5em;font-weight:650;line-height:1.18;letter-spacing:-.02em;color:var(--on-surface)}
.display-lg{font-size:clamp(2.5rem,6vw,4rem);font-weight:700;line-height:1.08;letter-spacing:-.035em}
.display-md{font-size:clamp(2.1rem,4.6vw,3.1rem);font-weight:680;line-height:1.12;letter-spacing:-.03em}
.headline{font-size:clamp(1.65rem,3vw,2.25rem);font-weight:650;line-height:1.2;letter-spacing:-.022em}
.title-lg{font-size:1.3rem;font-weight:620;letter-spacing:-.012em;line-height:1.35}
.title{font-size:1.075rem;font-weight:620;letter-spacing:-.008em;line-height:1.4}
.body-lg{font-size:1.115rem;line-height:1.7;color:var(--on-surface-variant)}
.body{font-size:1rem;line-height:1.7;color:var(--on-surface-variant)}
.body-sm{font-size:.9rem;line-height:1.6;color:var(--on-surface-variant)}
.label{font-size:.8125rem;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--on-surface-muted)}
.mono{font-family:var(--font-mono);font-size:.9em;letter-spacing:0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:.8125rem;font-weight:650;
  letter-spacing:.06em;text-transform:uppercase;color:var(--primary);margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--primary)}
.text-gradient{
  background:linear-gradient(96deg,var(--brand-50) 0%,var(--teal-50) 52%,var(--brand-60) 100%);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent;
}
.balance{text-wrap:balance}
.lead{font-size:clamp(1.05rem,1.7vw,1.28rem);line-height:1.65;color:var(--on-surface-variant);max-width:64ch}

/* ---------- 6. Layout ---------- */
.container{width:100%;max-width:var(--max-w);margin-inline:auto;padding-inline:var(--gutter)}
.container-narrow{width:100%;max-width:var(--max-w-narrow);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:clamp(64px,8vw,112px)}
.section-sm{padding-block:clamp(44px,5vw,68px)}
.section-tint{background:var(--surface-1)}
.section-tint-2{background:var(--surface-2)}
.section-head{max-width:this;margin-bottom:clamp(36px,4vw,56px)}
.section-head.center{text-align:center;margin-inline:auto;max-width:720px}
.grid{display:grid;gap:24px}
/* Grid/flex children default to min-width:auto, which stops inner scroll
   containers (tables, code blocks) from shrinking and forces page overflow. */
.grid > *,.split > *,.stack > *{min-width:0}
.g-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g-4{grid-template-columns:repeat(4,minmax(0,1fr))}
/* Column ratio comes from --split-cols so per-page overrides stay inline while
   the mobile media query below can still win (inline styles would not lose). */
.split{display:grid;grid-template-columns:var(--split-cols,1.05fr .95fr);
  gap:clamp(32px,5vw,72px);align-items:center}
.stack{display:flex;flex-direction:column}
.row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.center{text-align:center}
.mt-0{margin-top:0}.mt-1{margin-top:8px}.mt-2{margin-top:16px}.mt-3{margin-top:24px}
.mt-4{margin-top:32px}.mt-5{margin-top:48px}
.mb-0{margin-bottom:0}.mb-2{margin-bottom:16px}.mb-3{margin-bottom:24px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip-link{
  position:absolute;left:16px;top:-60px;z-index:2000;background:var(--primary);color:var(--on-primary);
  padding:10px 18px;border-radius:var(--r-sm);font-weight:600;transition:top var(--dur-2);
}
.skip-link:focus{top:12px;text-decoration:none}

@media (max-width:960px){
  .split{grid-template-columns:1fr;gap:40px}
  /* Sticky sidebars only make sense beside a column, not stacked above one. */
  .split > [style*="sticky"]{position:static!important}
  .g-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .g-3{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:640px){
  :root{--gutter:18px}
  .g-2,.g-3,.g-4{grid-template-columns:1fr}
}

/* ---------- 7. Buttons ---------- */
.btn{
  --btn-h:44px;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:var(--btn-h);padding:0 24px;border:1px solid transparent;border-radius:var(--r-full);
  font-size:.9375rem;font-weight:620;letter-spacing:.005em;cursor:pointer;white-space:nowrap;
  text-decoration:none!important;position:relative;overflow:hidden;
  transition:background-color var(--dur-2) var(--ease-standard),
             box-shadow var(--dur-2) var(--ease-standard),
             border-color var(--dur-2), transform var(--dur-1), color var(--dur-2);
}
.btn:active{transform:scale(.975)}
.btn svg{width:18px;height:18px;flex:none}
.btn-filled{background:var(--primary);color:var(--on-primary);box-shadow:var(--el-1)}
.btn-filled:hover{background:var(--primary-hover);box-shadow:var(--el-2)}
.btn-tonal{background:var(--primary-container);color:var(--on-primary-container)}
.btn-tonal:hover{box-shadow:var(--el-1);filter:brightness(.97)}
.btn-outlined{background:transparent;color:var(--primary);border-color:var(--outline-variant)}
.btn-outlined:hover{background:var(--primary-container);border-color:var(--primary)}
.btn-text{background:transparent;color:var(--primary);padding-inline:14px}
.btn-text:hover{background:var(--primary-container)}
.btn-lg{--btn-h:52px;padding-inline:30px;font-size:1rem}
.btn-sm{--btn-h:36px;padding-inline:18px;font-size:.875rem}
.btn-block{width:100%}
.btn-inverse{background:var(--n-100);color:var(--brand-30)}
.btn-inverse:hover{background:var(--brand-95)}
.btn-ghost-inverse{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.42)}
.btn-ghost-inverse:hover{background:rgba(255,255,255,.2)}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-weight:620;font-size:.9375rem;
  color:var(--primary);text-decoration:none;
}
.link-arrow:hover{text-decoration:none;gap:10px}
.link-arrow svg{width:16px;height:16px;transition:transform var(--dur-2) var(--ease-standard)}
.link-arrow:hover svg{transform:translateX(3px)}

/* ---------- 8. Icon button ---------- */
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;
  border:0;border-radius:var(--r-full);background:transparent;color:var(--on-surface-variant);
  cursor:pointer;transition:background-color var(--dur-2),color var(--dur-2);
}
.icon-btn:hover{background:var(--surface-2);color:var(--on-surface)}
.icon-btn svg{width:20px;height:20px}

/* ---------- 9. Cards ---------- */
.card{
  background:var(--surface);border:1px solid var(--outline-variant);border-radius:var(--r-lg);
  padding:28px;transition:box-shadow var(--dur-3) var(--ease-standard),
    transform var(--dur-3) var(--ease-standard),border-color var(--dur-3);
}
.card-hover:hover{box-shadow:var(--el-3);transform:translateY(-4px);border-color:transparent}
.card-filled{background:var(--surface-1);border-color:transparent}
.card-elevated{border-color:transparent;box-shadow:var(--el-2)}
.card-flush{padding:0;overflow:hidden}
.card-link{display:block;color:inherit;text-decoration:none!important}
.card h3{margin-bottom:10px}
.card .body,.card .body-sm{margin:0}

.feature-icon{
  display:inline-flex;align-items:center;justify-content:center;width:48px;height:48px;
  border-radius:var(--r-md);background:var(--primary-container);color:var(--on-primary-container);
  margin-bottom:18px;
}
.feature-icon svg{width:24px;height:24px}
.feature-icon.teal{background:var(--secondary-container);color:var(--on-secondary-container)}
.feature-icon.amber{background:var(--tertiary-container);color:var(--amber-30)}

/* ---------- 10. Chips & badges ---------- */
.chip{
  display:inline-flex;align-items:center;gap:6px;height:32px;padding:0 14px;
  border:1px solid var(--outline-variant);border-radius:var(--r-sm);background:var(--surface);
  font-size:.8125rem;font-weight:600;color:var(--on-surface-variant);cursor:default;
  white-space:nowrap;
}
.chip.selectable{cursor:pointer;transition:all var(--dur-2)}
.chip.selectable:hover{background:var(--surface-2)}
.chip[aria-selected="true"],.chip.active{
  background:var(--secondary-container);color:var(--on-secondary-container);border-color:transparent;
}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:var(--r-full);
  font-size:.75rem;font-weight:680;letter-spacing:.02em;
  background:var(--primary-container);color:var(--on-primary-container);
}
.badge.teal{background:var(--secondary-container);color:var(--on-secondary-container)}
.badge.amber{background:var(--warn-container);color:var(--amber-30)}
.badge.success{background:var(--success-container);color:var(--success)}
.badge.neutral{background:var(--surface-2);color:var(--on-surface-variant)}
.badge-dot{width:6px;height:6px;border-radius:50%;background:currentColor;flex:none}
.pulse{animation:pulse 2s var(--ease-standard) infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}

/* ---------- 11. Top nav ---------- */
.nav{
  position:sticky;top:0;z-index:900;height:var(--nav-h);
  background:color-mix(in srgb,var(--surface) 82%,transparent);
  backdrop-filter:saturate(180%) blur(14px);-webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid transparent;transition:border-color var(--dur-2),box-shadow var(--dur-2),background-color var(--dur-2);
}
@supports not (backdrop-filter:blur(1px)){.nav{background:var(--surface)}}
.nav.scrolled{border-bottom-color:var(--outline-variant);box-shadow:var(--el-1)}
.nav-inner{
  display:flex;align-items:center;gap:8px;height:100%;
  max-width:var(--max-w);margin-inline:auto;padding-inline:var(--gutter);
}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none!important;color:var(--on-surface);flex:none}
.brand:hover{text-decoration:none}
.brand-mark{width:32px;height:32px;flex:none}
.brand-name{font-size:1.075rem;font-weight:700;letter-spacing:-.02em}
.brand-name .plus{color:var(--primary)}

.nav-links{display:flex;align-items:center;gap:2px;margin-left:20px;flex:1}
.nav-item{position:relative}
.nav-link{
  display:inline-flex;align-items:center;gap:5px;height:38px;padding:0 14px;border:0;
  background:transparent;border-radius:var(--r-sm);font-size:.9375rem;font-weight:560;
  color:var(--on-surface-variant);cursor:pointer;text-decoration:none!important;
  transition:background-color var(--dur-2),color var(--dur-2);
}
.nav-link:hover,.nav-link[aria-expanded="true"]{background:var(--surface-2);color:var(--on-surface)}
.nav-link.current{color:var(--primary);font-weight:640}
.nav-link .caret{width:14px;height:14px;transition:transform var(--dur-2) var(--ease-standard)}
.nav-link[aria-expanded="true"] .caret{transform:rotate(180deg)}
.nav-actions{display:flex;align-items:center;gap:6px;flex:none}

/* Mega menu */
.mega{
  position:absolute;top:calc(100% + 10px);left:-16px;z-index:950;min-width:600px;
  background:var(--surface);border:1px solid var(--outline-variant);border-radius:var(--r-lg);
  box-shadow:var(--el-4);padding:22px;opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity var(--dur-2) var(--ease-standard),transform var(--dur-2) var(--ease-standard),visibility var(--dur-2);
}
.mega.open{opacity:1;visibility:visible;transform:translateY(0)}
.mega-grid{display:grid;grid-template-columns:1fr 1fr;gap:6px 22px}
.mega-col-head{
  font-size:.75rem;font-weight:680;letter-spacing:.06em;text-transform:uppercase;
  color:var(--on-surface-muted);padding:6px 12px;margin-top:4px;
}
.mega-link{
  display:flex;gap:12px;padding:11px 12px;border-radius:var(--r-md);text-decoration:none!important;
  color:var(--on-surface);transition:background-color var(--dur-1);
}
.mega-link:hover{background:var(--surface-2)}
.mega-link .mi{
  flex:none;width:34px;height:34px;border-radius:var(--r-sm);display:grid;place-items:center;
  background:var(--primary-container);color:var(--on-primary-container);
}
.mega-link .mi svg{width:18px;height:18px}
.mega-link strong{display:block;font-size:.9375rem;font-weight:620;line-height:1.35}
.mega-link span{display:block;font-size:.8125rem;color:var(--on-surface-muted);line-height:1.45;margin-top:2px}
.mega-foot{
  margin-top:16px;padding-top:16px;border-top:1px solid var(--outline-variant);
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
}

/* Mobile nav */
.nav-toggle{display:none}
.mobile-nav{
  position:fixed;inset:var(--nav-h) 0 0;z-index:890;background:var(--surface);
  overflow-y:auto;padding:20px var(--gutter) 60px;
  transform:translateX(100%);visibility:hidden;
  transition:transform var(--dur-3) var(--ease-emphasized),visibility var(--dur-3);
}
.mobile-nav.open{transform:translateX(0);visibility:visible}
.m-group{border-bottom:1px solid var(--outline-variant)}
.m-group summary{
  display:flex;align-items:center;justify-content:space-between;padding:16px 4px;
  font-size:1.05rem;font-weight:620;cursor:pointer;list-style:none;
}
.m-group summary::-webkit-details-marker{display:none}
.m-group summary svg{width:18px;height:18px;color:var(--on-surface-muted);transition:transform var(--dur-2)}
.m-group[open] summary svg{transform:rotate(180deg)}
.m-group .m-body{padding:0 4px 14px}
.m-group .m-body a{
  display:block;padding:10px 12px;border-radius:var(--r-sm);color:var(--on-surface-variant);
  font-size:.9375rem;text-decoration:none!important;
}
.m-group .m-body a:hover{background:var(--surface-2);color:var(--on-surface)}
.m-flat{
  display:block;padding:16px 4px;font-size:1.05rem;font-weight:620;color:var(--on-surface);
  border-bottom:1px solid var(--outline-variant);text-decoration:none!important;
}

@media (max-width:1080px){
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .nav-actions{margin-left:auto}
}

/* ---------- 12. Language / theme switch ---------- */
.lang-switch{
  display:inline-flex;align-items:center;height:34px;padding:3px;border-radius:var(--r-full);
  background:var(--surface-2);gap:2px;
}
.lang-switch button{
  height:28px;padding:0 12px;border:0;border-radius:var(--r-full);background:transparent;
  font-size:.8125rem;font-weight:640;color:var(--on-surface-muted);cursor:pointer;
  transition:background-color var(--dur-2),color var(--dur-2);
}
.lang-switch button[aria-pressed="true"]{background:var(--surface);color:var(--on-surface);box-shadow:var(--el-1)}

/* ---------- 13. Hero ---------- */
.hero{position:relative;overflow:hidden;padding-block:clamp(64px,9vw,124px) clamp(56px,7vw,96px)}
.hero-bg{position:absolute;inset:0;z-index:0;pointer-events:none}
.hero-bg::before{
  content:"";position:absolute;top:-30%;left:50%;width:min(1100px,120%);aspect-ratio:1;
  transform:translateX(-50%);border-radius:50%;
  background:radial-gradient(circle at 42% 42%,var(--hero-glow-a) 0%,transparent 62%),
             radial-gradient(circle at 68% 58%,var(--hero-glow-b) 0%,transparent 58%);
  filter:blur(6px);
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(var(--grid-line) 1px,transparent 1px),
                   linear-gradient(90deg,var(--grid-line) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse 80% 62% at 50% 34%,#000 30%,transparent 76%);
  -webkit-mask-image:radial-gradient(ellipse 80% 62% at 50% 34%,#000 30%,transparent 76%);
}
.hero-inner{position:relative;z-index:1}
.hero-copy{max-width:760px}
.hero h1{margin-bottom:20px}
.hero .lead{margin-bottom:32px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.hero-note{margin-top:18px;font-size:.875rem;color:var(--on-surface-muted)}
.announce{
  display:inline-flex;align-items:center;gap:10px;padding:5px 6px 5px 14px;margin-bottom:26px;
  border:1px solid var(--outline-variant);border-radius:var(--r-full);background:var(--surface);
  font-size:.875rem;color:var(--on-surface-variant);text-decoration:none!important;
  box-shadow:var(--el-1);transition:box-shadow var(--dur-2),transform var(--dur-2);
}
.announce:hover{box-shadow:var(--el-2);transform:translateY(-1px)}
.announce .badge{flex:none}
.announce svg{width:15px;height:15px;color:var(--on-surface-muted)}

/* Hero page variant (sub-pages) */
.page-hero{position:relative;overflow:hidden;padding-block:clamp(52px,7vw,88px) clamp(40px,5vw,64px);background:var(--surface-1)}
.page-hero .hero-bg::after{opacity:.6}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:.875rem;color:var(--on-surface-muted);margin-bottom:20px;flex-wrap:wrap}
.breadcrumb a{color:var(--on-surface-muted)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{opacity:.5}

/* ---------- 14. Console mock (hero visual) ---------- */
.mock{
  border:1px solid var(--outline-variant);border-radius:var(--r-lg);overflow:hidden;
  background:var(--surface);box-shadow:var(--el-4);max-width:100%;min-width:0;
}
.mock-bar{
  display:flex;align-items:center;gap:8px;padding:11px 14px;background:var(--surface-2);
  border-bottom:1px solid var(--outline-variant);
}
.mock-dots{display:flex;gap:6px}
.mock-dots i{width:10px;height:10px;border-radius:50%;background:var(--outline-variant)}
.mock-title{font-size:.8125rem;color:var(--on-surface-muted);font-family:var(--font-mono)}
.mock-body{padding:0}
.code-block{
  margin:0;padding:20px 22px;background:var(--code-bg);color:var(--code-fg);overflow-x:auto;
  font-family:var(--font-mono);font-size:.8375rem;line-height:1.75;tab-size:2;
}
.code-block code{font:inherit}
.tok-c{color:#7d8590}                 /* comment */
.tok-k{color:#ff7b72}                 /* keyword */
.tok-s{color:#a5d6ff}                 /* string */
.tok-f{color:#d2a8ff}                 /* function */
.tok-n{color:#79c0ff}                 /* number/const */
.tok-p{color:#7ee787}                 /* property */
.copy-btn{
  position:absolute;top:10px;right:10px;height:30px;padding:0 12px;border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.08);color:#e6e6e6;
  font-size:.75rem;font-weight:620;cursor:pointer;transition:background-color var(--dur-2);
}
.copy-btn:hover{background:rgba(255,255,255,.18)}
.code-wrap{position:relative}

/* ---------- 15. Logo / trust strip ---------- */
.trust{padding-block:40px;border-block:1px solid var(--outline-variant);background:var(--surface-1)}
.trust-label{text-align:center;font-size:.8125rem;font-weight:620;letter-spacing:.06em;
  text-transform:uppercase;color:var(--on-surface-muted);margin-bottom:26px}
.logo-row{
  display:flex;align-items:center;justify-content:center;gap:18px clamp(18px,2.6vw,34px);flex-wrap:wrap;
}
.logo-row .lg{
  display:flex;align-items:center;gap:8px;font-size:.9rem;font-weight:640;white-space:nowrap;
  color:var(--on-surface-muted);opacity:.85;transition:opacity var(--dur-2),color var(--dur-2);
}
.logo-row .lg:hover{opacity:1;color:var(--on-surface-variant)}
.logo-row .lg svg{width:22px;height:22px;flex:none}

/* ---------- 16. Stats ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--outline-variant);
  border:1px solid var(--outline-variant);border-radius:var(--r-lg);overflow:hidden}
.stat{background:var(--surface);padding:28px 24px;text-align:center}
.stat .num{
  font-size:clamp(1.9rem,3.4vw,2.6rem);font-weight:700;letter-spacing:-.03em;line-height:1.1;
  color:var(--primary);font-variant-numeric:tabular-nums;
}
.stat .num .suffix{font-size:.55em;font-weight:640;margin-left:2px;letter-spacing:0}
.stat .cap{margin-top:8px;font-size:.875rem;color:var(--on-surface-variant);line-height:1.5}
@media (max-width:820px){.stats{grid-template-columns:repeat(2,1fr)}}

/* ---------- 17. Tabs ---------- */
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--outline-variant);overflow-x:auto;
  scrollbar-width:none;-ms-overflow-style:none}
.tabs::-webkit-scrollbar{display:none}
.tab{
  position:relative;display:inline-flex;align-items:center;justify-content:center;
  flex:none;padding:14px 20px;border:0;background:transparent;cursor:pointer;
  font-size:.9375rem;font-weight:600;color:var(--on-surface-muted);white-space:nowrap;
  transition:color var(--dur-2);
}
/* Without this the inline SVGs fall back to their intrinsic box and render huge. */
.tab svg{width:18px;height:18px;flex:none}
.tab:hover{color:var(--on-surface)}
.tab[aria-selected="true"]{color:var(--primary)}
.tab[aria-selected="true"]::after{
  content:"";position:absolute;left:12px;right:12px;bottom:-1px;height:3px;
  border-radius:3px 3px 0 0;background:var(--primary);
}
.tab-panel{display:none;padding-top:36px;animation:fadeUp var(--dur-4) var(--ease-decel) both}
.tab-panel.active{display:block}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}

/* ---------- 18. Accordion (FAQ) ---------- */
.acc{border-top:1px solid var(--outline-variant)}
.acc details{border-bottom:1px solid var(--outline-variant)}
.acc summary{
  display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 4px;
  font-size:1.05rem;font-weight:620;cursor:pointer;list-style:none;color:var(--on-surface);
  transition:color var(--dur-2);
}
.acc summary::-webkit-details-marker{display:none}
.acc summary:hover{color:var(--primary)}
.acc summary .ico{
  flex:none;width:26px;height:26px;border-radius:50%;display:grid;place-items:center;
  background:var(--surface-2);color:var(--on-surface-variant);transition:transform var(--dur-3) var(--ease-standard),background-color var(--dur-2);
}
.acc summary .ico svg{width:15px;height:15px}
.acc details[open] summary{color:var(--primary)}
.acc details[open] summary .ico{transform:rotate(180deg);background:var(--primary-container);color:var(--on-primary-container)}
.acc .acc-body{padding:0 44px 24px 4px;color:var(--on-surface-variant);line-height:1.75}
.acc .acc-body p:first-child{margin-top:0}
.acc .acc-body p:last-child{margin-bottom:0}

/* ---------- 19. Timeline ---------- */
.timeline{position:relative;padding-left:34px}
.timeline::before{content:"";position:absolute;left:9px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(var(--primary),var(--secondary),transparent);border-radius:2px}
.tl-item{position:relative;padding-bottom:34px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-32px;top:6px;width:12px;height:12px;border-radius:50%;
  background:var(--surface);border:3px solid var(--primary);box-shadow:0 0 0 4px var(--background);
}
.tl-date{font-size:.8125rem;font-weight:680;letter-spacing:.04em;color:var(--primary);text-transform:uppercase}
.tl-item h4{margin:6px 0 6px;font-size:1.075rem}
.tl-item p{margin:0;color:var(--on-surface-variant);font-size:.9375rem;line-height:1.65}

/* ---------- 20. Steps / process ---------- */
.steps{counter-reset:s;display:grid;gap:20px}
.step{
  position:relative;counter-increment:s;padding:26px 26px 26px 78px;
  background:var(--surface);border:1px solid var(--outline-variant);border-radius:var(--r-lg);
  transition:box-shadow var(--dur-3),border-color var(--dur-3);
}
.step:hover{box-shadow:var(--el-2)}
.step::before{
  content:counter(s,decimal-leading-zero);position:absolute;left:26px;top:24px;
  font-family:var(--font-mono);font-size:1.05rem;font-weight:700;color:var(--primary);
  background:var(--primary-container);width:36px;height:36px;border-radius:var(--r-sm);
  display:grid;place-items:center;letter-spacing:-.02em;
}
.step h4{margin:0 0 8px;font-size:1.075rem}
.step p{margin:0;color:var(--on-surface-variant);font-size:.9375rem;line-height:1.65}
.step .meta{margin-top:12px;display:flex;gap:8px;flex-wrap:wrap}

/* ---------- 21. Tables ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--outline-variant);border-radius:var(--r-lg);
  background:var(--surface);max-width:100%;-webkit-overflow-scrolling:touch}
table.tbl{width:100%;border-collapse:collapse;font-size:.9375rem;min-width:640px}
table.tbl th,table.tbl td{padding:15px 20px;text-align:left;border-bottom:1px solid var(--outline-variant);vertical-align:top}
table.tbl thead th{
  background:var(--surface-2);font-size:.8125rem;font-weight:680;letter-spacing:.03em;
  text-transform:uppercase;color:var(--on-surface-variant);white-space:nowrap;
}
table.tbl tbody tr:last-child td{border-bottom:0}
table.tbl tbody tr{transition:background-color var(--dur-1)}
table.tbl tbody tr:hover{background:var(--surface-1)}
table.tbl td.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;white-space:nowrap}
table.tbl .model-name{font-weight:640;color:var(--on-surface)}
table.tbl .model-name small{display:block;font-weight:400;color:var(--on-surface-muted);font-size:.8125rem;margin-top:3px}

/* ---------- 22. Pricing ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.price-card{
  position:relative;background:var(--surface);border:1px solid var(--outline-variant);
  border-radius:var(--r-xl);padding:32px;display:flex;flex-direction:column;height:100%;
  transition:box-shadow var(--dur-3),transform var(--dur-3);
}
.price-card:hover{box-shadow:var(--el-3)}
.price-card.featured{border-color:var(--primary);border-width:2px;box-shadow:var(--el-3)}
.price-card.featured::before{
  content:attr(data-tag);position:absolute;top:-12px;left:32px;padding:4px 14px;
  border-radius:var(--r-full);background:var(--primary);color:var(--on-primary);
  font-size:.75rem;font-weight:680;letter-spacing:.03em;
}
.price-card h3{margin-bottom:6px;font-size:1.3rem}
.price-card .tier-desc{font-size:.9rem;color:var(--on-surface-variant);min-height:44px;margin-bottom:20px}
.price-amount{display:flex;align-items:baseline;gap:6px;margin-bottom:6px}
.price-amount .amt{font-size:2.5rem;font-weight:700;letter-spacing:-.035em;line-height:1}
.price-amount .per{font-size:.9rem;color:var(--on-surface-muted);font-weight:500}
.price-sub{font-size:.8125rem;color:var(--on-surface-muted);margin-bottom:24px}
.price-card .btn{margin-bottom:24px}
.feat-list{list-style:none;padding:0;margin:0;display:grid;gap:12px}
.feat-list li{display:flex;gap:10px;font-size:.9rem;line-height:1.55;color:var(--on-surface-variant)}
.feat-list li svg{width:18px;height:18px;flex:none;color:var(--secondary);margin-top:2px}
.feat-list li.off{opacity:.45}
.feat-list li.off svg{color:var(--on-surface-muted)}
.feat-list .grp{
  font-size:.75rem;font-weight:680;letter-spacing:.05em;text-transform:uppercase;
  color:var(--on-surface-muted);margin-top:8px;display:block;
}
@media (max-width:980px){.price-grid{grid-template-columns:1fr}}

/* ---------- 23. Quote / testimonial ---------- */
.quote{
  background:var(--surface);border:1px solid var(--outline-variant);border-radius:var(--r-lg);
  padding:30px;display:flex;flex-direction:column;height:100%;
}
.quote .mark{font-size:2.6rem;line-height:.7;color:var(--primary);opacity:.35;font-weight:700;margin-bottom:10px}
.quote blockquote{margin:0 0 22px;font-size:1.0125rem;line-height:1.7;color:var(--on-surface)}
.quote figcaption{margin-top:auto;display:flex;align-items:center;gap:12px}
.avatar{
  width:42px;height:42px;border-radius:50%;flex:none;display:grid;place-items:center;
  background:var(--primary-container);color:var(--on-primary-container);
  font-weight:700;font-size:.95rem;letter-spacing:-.01em;
}
.avatar.teal{background:var(--secondary-container);color:var(--on-secondary-container)}
.avatar.amber{background:var(--tertiary-container);color:var(--amber-30)}
.quote figcaption .who{font-size:.9rem;font-weight:640;line-height:1.35}
.quote figcaption .role{font-size:.8125rem;color:var(--on-surface-muted);line-height:1.4}

/* ---------- 24. Case study card ---------- */
.case{
  display:flex;flex-direction:column;height:100%;background:var(--surface);
  border:1px solid var(--outline-variant);border-radius:var(--r-lg);overflow:hidden;
  transition:box-shadow var(--dur-3),transform var(--dur-3);
}
.case:hover{box-shadow:var(--el-3);transform:translateY(-4px)}
.case-top{
  padding:22px 24px;background:linear-gradient(135deg,var(--primary-container),var(--secondary-container));
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.case-top .ind{font-size:.8125rem;font-weight:680;letter-spacing:.04em;text-transform:uppercase;
  color:var(--on-primary-container)}
.case-top svg{width:20px;height:20px;flex:none;color:var(--on-primary-container);opacity:.75}
.case-body{padding:24px;display:flex;flex-direction:column;flex:1}
.case-body h3{font-size:1.125rem;margin-bottom:10px}
.case-metrics{display:flex;gap:24px;margin:20px 0 0;padding-top:20px;border-top:1px solid var(--outline-variant);flex-wrap:wrap}
.case-metrics div{min-width:0}
.case-metrics .m-num{font-size:1.4rem;font-weight:700;color:var(--secondary);letter-spacing:-.02em;line-height:1.1}
.case-metrics .m-cap{font-size:.75rem;color:var(--on-surface-muted);margin-top:3px;line-height:1.4}

/* ---------- 25. CTA band ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-2xl);padding:clamp(40px,6vw,72px);
  background:linear-gradient(120deg,var(--brand-30) 0%,var(--brand-40) 46%,var(--teal-40) 100%);
  color:#fff;text-align:center;
}
.cta-band::after{
  content:"";position:absolute;inset:0;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.07) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.07) 1px,transparent 1px);
  background-size:48px 48px;
  mask-image:radial-gradient(ellipse 70% 70% at 50% 40%,#000,transparent 72%);
  -webkit-mask-image:radial-gradient(ellipse 70% 70% at 50% 40%,#000,transparent 72%);
}
.cta-band > *{position:relative;z-index:1}
.cta-band h2{color:#fff;margin-bottom:14px}
.cta-band p{color:rgba(255,255,255,.88);max-width:58ch;margin:0 auto 30px;font-size:1.0625rem;line-height:1.65}
.cta-band .row{justify-content:center}
.cta-band .note{margin-top:20px;font-size:.8125rem;color:rgba(255,255,255,.72)}

/* ---------- 26. Forms (MD3 outlined field) ---------- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.field{position:relative;display:flex;flex-direction:column}
.field.full{grid-column:1/-1}
.field > label{
  font-size:.875rem;font-weight:620;color:var(--on-surface);margin-bottom:7px;display:flex;
  align-items:center;gap:5px;
}
.field > label .req{color:var(--error);font-weight:700}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border:1px solid var(--outline);border-radius:var(--r-sm);
  background:var(--surface);color:var(--on-surface);font:inherit;font-size:.9375rem;
  transition:border-color var(--dur-2),box-shadow var(--dur-2),background-color var(--dur-2);
  appearance:none;
}
.field textarea{min-height:132px;resize:vertical;line-height:1.6}
.field select{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%235d5e62' stroke-width='2.2' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 12px center;background-size:18px;padding-right:40px;
}
.field input::placeholder,.field textarea::placeholder{color:var(--on-surface-muted);opacity:.75}
.field input:hover,.field select:hover,.field textarea:hover{border-color:var(--on-surface-variant)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:0;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-container);
}
.field .hint{font-size:.8125rem;color:var(--on-surface-muted);margin-top:6px}
.field .err{font-size:.8125rem;color:var(--error);margin-top:6px;display:none;align-items:center;gap:5px}
.field.invalid input,.field.invalid select,.field.invalid textarea{border-color:var(--error)}
.field.invalid input:focus,.field.invalid textarea:focus{box-shadow:0 0 0 3px var(--error-container)}
.field.invalid .err{display:flex}
.checkbox{display:flex;gap:11px;align-items:flex-start;font-size:.875rem;color:var(--on-surface-variant);line-height:1.55}
.checkbox input{width:18px;height:18px;margin:2px 0 0;flex:none;accent-color:var(--primary);appearance:auto}
.form-note{font-size:.8125rem;color:var(--on-surface-muted);line-height:1.6}
.form-status{
  display:none;gap:10px;align-items:flex-start;padding:14px 16px;border-radius:var(--r-sm);
  font-size:.9rem;line-height:1.55;margin-bottom:20px;
}
.form-status.show{display:flex}
.form-status.ok{background:var(--success-container);color:var(--success)}
.form-status.bad{background:var(--error-container);color:var(--error)}
.form-status svg{width:19px;height:19px;flex:none;margin-top:1px}
@media (max-width:680px){.form-grid{grid-template-columns:1fr}}

/* ---------- 27. Blog ---------- */
.post-card{
  display:flex;flex-direction:column;height:100%;background:var(--surface);
  border:1px solid var(--outline-variant);border-radius:var(--r-lg);overflow:hidden;
  color:inherit;text-decoration:none!important;transition:box-shadow var(--dur-3),transform var(--dur-3);
}
.post-card:hover{box-shadow:var(--el-3);transform:translateY(-4px);text-decoration:none}
.post-thumb{aspect-ratio:16/9;background:linear-gradient(135deg,var(--brand-40),var(--teal-40));
  display:grid;place-items:center;color:#fff;position:relative;overflow:hidden}
.post-thumb.v2{background:linear-gradient(135deg,var(--teal-40),var(--brand-50))}
.post-thumb.v3{background:linear-gradient(135deg,var(--brand-30),#6d28d9)}
.post-thumb::after{
  content:"";position:absolute;inset:0;opacity:.42;
  background-image:linear-gradient(rgba(255,255,255,.1) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.1) 1px,transparent 1px);
  background-size:32px 32px;
}
.post-thumb svg{width:46px;height:46px;position:relative;z-index:1;opacity:.95}
.post-body{padding:24px;display:flex;flex-direction:column;flex:1}
.post-meta{display:flex;align-items:center;gap:10px;font-size:.8125rem;color:var(--on-surface-muted);margin-bottom:12px;flex-wrap:wrap}
.post-body h3{font-size:1.125rem;margin-bottom:10px;line-height:1.4}
.post-body .body-sm{flex:1}
.post-foot{margin-top:18px;display:flex;align-items:center;gap:10px}

.prose{max-width:min(72ch,100%)}
.prose .table-wrap,.prose pre{max-width:100%}
.prose h2{margin-top:2em;font-size:1.6rem}
.prose h3{margin-top:1.6em;font-size:1.22rem}
.prose p{margin:0 0 1.15em;color:var(--on-surface-variant);line-height:1.8}
.prose ul,.prose ol{margin:0 0 1.15em;color:var(--on-surface-variant);line-height:1.8}
.prose li{margin-bottom:.5em}
.prose strong{color:var(--on-surface);font-weight:640}
.prose blockquote{
  margin:1.6em 0;padding:4px 0 4px 22px;border-left:3px solid var(--primary);
  color:var(--on-surface);font-size:1.075rem;line-height:1.7;
}
.prose code:not(.code-block code){
  background:var(--surface-2);padding:.15em .42em;border-radius:var(--r-xs);
  font-family:var(--font-mono);font-size:.875em;color:var(--on-surface);
}
.prose .code-wrap{margin:1.5em 0}
.prose .code-block{border-radius:var(--r-md)}
.prose figure{margin:1.8em 0}
.prose figcaption{font-size:.8125rem;color:var(--on-surface-muted);margin-top:10px;text-align:center}

/* ---------- 28. Misc blocks ---------- */
.callout{
  display:flex;gap:14px;padding:18px 20px;border-radius:var(--r-md);
  background:var(--primary-container);color:var(--on-primary-container);
  font-size:.9375rem;line-height:1.65;
}
.callout.teal{background:var(--secondary-container);color:var(--on-secondary-container)}
.callout.warn{background:var(--warn-container);color:var(--amber-30)}
.callout svg{width:20px;height:20px;flex:none;margin-top:2px}
.callout strong{display:block;margin-bottom:3px}
.callout p{margin:0}

.kv-list{display:grid;gap:0;border:1px solid var(--outline-variant);border-radius:var(--r-lg);overflow:hidden;background:var(--surface)}
.kv-list > div{display:grid;grid-template-columns:200px 1fr;gap:20px;padding:16px 22px;border-bottom:1px solid var(--outline-variant);font-size:.9375rem}
.kv-list > div:last-child{border-bottom:0}
.kv-list dt,.kv-list .k{font-weight:620;color:var(--on-surface);margin:0}
.kv-list .k svg{width:20px;height:20px;flex:none;color:var(--on-surface-variant)}
/* An icon-only key needs no 200px label column. */
.kv-list > div:has(> .k > svg:only-child){grid-template-columns:24px 1fr;gap:14px;align-items:center}
.kv-list dd,.kv-list .v{margin:0;color:var(--on-surface-variant)}
@media (max-width:600px){.kv-list > div{grid-template-columns:1fr;gap:5px}}

.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px 28px;list-style:none;padding:0;margin:0}
.check-grid li{display:flex;gap:11px;font-size:.9375rem;line-height:1.6;color:var(--on-surface-variant)}
.check-grid li svg{width:19px;height:19px;flex:none;color:var(--secondary);margin-top:2px}
@media (max-width:640px){.check-grid{grid-template-columns:1fr}}

.job{
  display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 24px;
  border:1px solid var(--outline-variant);border-radius:var(--r-lg);background:var(--surface);
  color:inherit;text-decoration:none!important;transition:box-shadow var(--dur-2),border-color var(--dur-2),transform var(--dur-2);
}
.job:hover{box-shadow:var(--el-2);border-color:var(--primary);transform:translateX(3px);text-decoration:none}
.job h4{margin:0 0 7px;font-size:1.05rem}
.job .job-meta{display:flex;gap:8px;flex-wrap:wrap}
.job .go{flex:none;color:var(--primary)}
.job .go svg{width:20px;height:20px}
@media (max-width:560px){.job{flex-direction:column;align-items:flex-start}}

/* Architecture diagram layers */
.arch{display:grid;gap:14px}
.arch-layer{
  border:1px solid var(--outline-variant);border-radius:var(--r-md);padding:18px 20px;
  background:var(--surface);
}
.arch-layer .lbl{font-size:.75rem;font-weight:680;letter-spacing:.06em;text-transform:uppercase;
  color:var(--on-surface-muted);margin-bottom:12px}
.arch-layer .boxes{display:flex;gap:10px;flex-wrap:wrap}
.arch-layer .bx{
  flex:1 1 120px;min-width:0;padding:12px 14px;border-radius:var(--r-sm);text-align:center;
  font-size:.875rem;font-weight:600;background:var(--surface-2);color:var(--on-surface-variant);
  border:1px solid transparent;transition:all var(--dur-2);
}
.arch-layer .bx:hover{background:var(--primary-container);color:var(--on-primary-container)}
.arch-layer.accent{background:var(--primary-container);border-color:transparent}
.arch-layer.accent .lbl{color:var(--on-primary-container);opacity:.8}
.arch-layer.accent .bx{background:rgba(255,255,255,.55);color:var(--brand-20)}
[data-theme="dark"] .arch-layer.accent .bx{background:rgba(0,0,0,.28);color:var(--brand-90)}
.arch-arrow{display:grid;place-items:center;color:var(--outline)}
.arch-arrow svg{width:20px;height:20px}

/* ---------- 29. Footer ---------- */
.footer{background:var(--surface-1);border-top:1px solid var(--outline-variant);padding-block:64px 0}
.footer-grid{display:grid;grid-template-columns:1.6fr repeat(4,1fr);gap:40px 32px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:.9rem;color:var(--on-surface-variant);line-height:1.7;max-width:34ch;margin:0 0 20px}
.footer h4{
  font-size:.8125rem;font-weight:680;letter-spacing:.06em;text-transform:uppercase;
  color:var(--on-surface-muted);margin-bottom:16px;
}
.footer ul{list-style:none;padding:0;margin:0;display:grid;gap:11px}
.footer ul a{font-size:.9rem;color:var(--on-surface-variant);text-decoration:none}
.footer ul a:hover{color:var(--primary);text-decoration:none}
.social{display:flex;gap:8px}
.social a{
  width:38px;height:38px;border-radius:var(--r-sm);display:grid;place-items:center;
  background:var(--surface-2);color:var(--on-surface-variant);transition:all var(--dur-2);
}
.social a:hover{background:var(--primary);color:var(--on-primary)}
.social svg{width:19px;height:19px}
.footer-bottom{
  margin-top:56px;padding-block:24px;border-top:1px solid var(--outline-variant);
  display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;
  font-size:.8375rem;color:var(--on-surface-muted);
}
.footer-bottom a{color:var(--on-surface-muted)}
.footer-bottom a:hover{color:var(--primary)}
.footer-legal{display:flex;gap:20px;flex-wrap:wrap}
.footer-icp{display:flex;gap:16px;flex-wrap:wrap;align-items:center}
@media (max-width:1000px){.footer-grid{grid-template-columns:1fr 1fr 1fr}.footer-brand{grid-column:1/-1}}
@media (max-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}

/* ---------- 29b. Language-scoped blocks ---------- */
/* Long-form article bodies ship in Chinese only; these keys off <html lang>,
   which the i18n switch keeps in sync. */
.en-only{display:none}
html[lang="en"] .en-only{display:flex}
html[lang="en"] .zh-only{display:none}

/* ---------- 30. Scroll reveal ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s var(--ease-decel),transform .6s var(--ease-decel)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none}}

/* ---------- 31. Back to top ---------- */
.to-top{
  position:fixed;right:22px;bottom:22px;z-index:800;width:46px;height:46px;border-radius:var(--r-md);
  border:1px solid var(--outline-variant);background:var(--surface);color:var(--on-surface-variant);
  box-shadow:var(--el-2);cursor:pointer;display:grid;place-items:center;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:all var(--dur-3) var(--ease-standard);
}
.to-top.show{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--primary);color:var(--on-primary);border-color:transparent}
.to-top svg{width:20px;height:20px}

/* ---------- 32. Cookie / notice bar ---------- */
.notice-bar{
  position:fixed;left:16px;right:16px;bottom:16px;z-index:850;max-width:520px;
  background:var(--surface);border:1px solid var(--outline-variant);border-radius:var(--r-lg);
  box-shadow:var(--el-4);padding:20px 22px;
  transform:translateY(140%);transition:transform var(--dur-4) var(--ease-emphasized);
}
.notice-bar.show{transform:none}
.notice-bar p{margin:0 0 16px;font-size:.875rem;line-height:1.6;color:var(--on-surface-variant)}
.notice-bar .row{gap:10px}

/* ---------- 33. Print ---------- */
@media print{
  .nav,.footer,.to-top,.notice-bar,.cta-band,.mobile-nav{display:none!important}
  body{background:#fff;color:#000}
  .section{padding-block:20px}
}