/* ==========================================================================
   VPNAF — base.css
   1. design tokens  2. reset  3. typography  4. layout shell  5. a11y
   6. buttons  7. announce bar  8. header / nav / drawer / lang
   9. hero  10. panels & cards  11. footer  12. reveal  13. overflow guards
   ========================================================================== */

/* ---------- 1. design tokens ---------- */
:root{
  /* palette */
  --bg:#E5EBF7;
  --bg-panel:#F7FAFF;
  --bg-panel-2:#D9E2F2;
  --bg-panel-3:#EFF4FD;
  --border:#C7D3E8;
  --accent:#C6E84B;
  --accent-light:#D4F063;
  --accent-dark:#A6C62D;
  --accent-ink:#3F5D10;
  --accent-wash:rgba(198,232,75,0.55);
  --text:#101B2D;
  --text-strong:#1B2A44;
  --text-muted:#55637D;
  --success:#1E9E6A;
  --warn:#C98A16;
  --error:#C4463E;
  --white:#FFFFFF;

  /* surfaces & atmosphere */
  --header-bg:rgba(229,235,247,0.82);
  --announce-bg:#101B2D;
  --announce-text:#D9F08C;
  --dot-color:rgba(16,27,45,0.062);
  --glow-a:rgba(198,232,75,0.34);
  --glow-b:rgba(166,198,45,0.16);
  --hairline:rgba(255,255,255,0.92);
  --row-bg:#FFFFFF;
  --row-current:rgba(198,232,75,0.22);
  --foot-grad-a:rgba(198,232,75,0.24);
  --foot-grad-b:rgba(198,232,75,0.06);
  --top-sheen:rgba(255,255,255,0.55);
  --bottom-sheen:rgba(217,226,242,0.55);

  /* radii */
  --radius-flag:3px;
  --radius-sm:10px;
  --radius-md:14px;
  --radius-lg:20px;
  --radius-xl:28px;
  --radius-pill:999px;

  /* shadows */
  --shadow-console:
    0 0 0 1px rgba(199,211,232,0.85),
    0 34px 70px -34px rgba(166,198,45,0.55),
    0 18px 44px -26px rgba(16,27,45,0.32);
  --shadow-bubble:
    0 18px 40px -20px rgba(16,27,45,0.34),
    0 2px 6px rgba(16,27,45,0.05);
  --shadow-card:
    0 10px 24px -18px rgba(16,27,45,0.36);
  --shadow-row:
    0 2px 6px -4px rgba(16,27,45,0.30);
  --shadow-row-current:
    0 6px 16px -12px rgba(166,198,45,0.90);
  --shadow-nav:
    0 6px 16px -12px rgba(16,27,45,0.50);
  --shadow-cta:
    0 8px 18px -10px rgba(166,198,45,0.90);
  --shadow-seal:
    0 14px 26px -14px rgba(166,198,45,0.95);
  --shadow-panel:
    0 24px 56px -38px rgba(16,27,45,0.36);
  --shadow-soft:
    0 14px 32px -24px rgba(16,27,45,0.32);
  --shadow-lift:
    0 22px 44px -28px rgba(16,27,45,0.40);
  --ring-accent:0 0 0 3px var(--accent-wash);

  /* gradients */
  --grad-accent:linear-gradient(180deg,var(--accent) 0%,var(--accent-dark) 100%);
  --grad-accent-hover:linear-gradient(180deg,var(--accent-light) 0%,var(--accent) 100%);
  --grad-panel:linear-gradient(160deg,var(--bg-panel) 0%,var(--bg-panel-3) 100%);
  --grad-foot:linear-gradient(180deg,var(--bg-panel) 0%,var(--bg-panel-2) 100%);

  /* type */
  --font-display:"Inter","Noto Sans SC","Noto Sans JP","Noto Sans KR",system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans","Microsoft YaHei",sans-serif;
  --font-body:"Inter","Noto Sans SC","Noto Sans JP","Noto Sans KR",system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Noto Sans SC",monospace;

  /* rhythm */
  --gutter:32px;
  --maxw:1200px;
  --header-h:76px;
  --sp-1:4px;
  --sp-2:8px;
  --sp-3:12px;
  --sp-4:16px;
  --sp-5:24px;
  --sp-6:32px;
  --sp-7:48px;
  --sp-8:64px;
  --sp-9:88px;
}

/* ---------- 2. reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--header-h) + 18px);
}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
a{color:inherit;text-decoration:none;}
p{margin:0;}
h1,h2,h3,h4{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img{max-width:100%;height:auto;}
svg{display:block;}
button{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--accent-ink);outline-offset:3px;border-radius:var(--radius-sm);}

/* ---------- 3. typography ---------- */
h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:800;
  color:var(--text);
  line-height:1.16;
  letter-spacing:-0.02em;
  text-wrap:balance;
}
h1{font-size:clamp(34px,4.4vw,56px);line-height:1.08;letter-spacing:-0.03em;}
h2{font-size:clamp(27px,3vw,40px);line-height:1.14;}
h3{font-size:clamp(19px,2vw,24px);letter-spacing:-0.015em;}
h4{font-size:18px;font-weight:700;letter-spacing:-0.01em;}
.lede{
  font-size:clamp(17px,1.4vw,19px);
  line-height:1.62;
  color:var(--text-muted);
  max-width:60ch;
}
.text-muted{color:var(--text-muted);}
.mono{font-family:var(--font-mono);}
.no-break{white-space:nowrap;}

/* ---------- 4. layout shell ---------- */
.shell,.wrap{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding-inline:var(--gutter);
}
.section{padding-block:clamp(56px,7vw,96px);}
.section--tight{padding-block:clamp(36px,4.5vw,60px);}
.section__head{max-width:760px;margin:0 auto clamp(28px,4vw,48px);text-align:center;}
.section__head--left{margin-inline:0;text-align:left;}
.section__head p{margin-top:14px;color:var(--text-muted);font-size:17px;}
.kicker{
  display:inline-flex;
  align-items:center;
  gap:9px;
  margin-bottom:16px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--text-muted);
}
.kicker::before{
  content:"";
  flex:none;
  width:20px;
  height:2px;
  border-radius:2px;
  background:var(--accent-dark);
}
.grid{display:grid;gap:clamp(16px,2.2vw,24px);}
.grid > *{min-width:0;}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr));}
.grid--4{grid-template-columns:repeat(4,minmax(0,1fr));}
.stack{display:grid;gap:var(--sp-4);}
.stack > *{min-width:0;}

/* ---------- 5. a11y ---------- */
.skip-link{
  position:absolute;
  left:16px;
  top:-64px;
  z-index:200;
  padding:10px 18px;
  border-radius:var(--radius-pill);
  background:var(--text);
  color:var(--bg-panel);
  font-size:14px;
  transition:top .18s ease;
}
.skip-link:focus{top:12px;}
.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;
}
html.nav-open{overflow:hidden;}

/* ---------- 6. buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:12px 24px;
  border:0;
  border-radius:var(--radius-pill);
  font-family:var(--font-body);
  font-size:15.5px;
  font-weight:700;
  letter-spacing:0.01em;
  white-space:nowrap;
  cursor:pointer;
  flex-shrink:0;
  transition:transform .18s ease,background .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.btn:hover{transform:translateY(-1px);}
.btn--primary{
  background:var(--grad-accent);
  color:var(--text);
  box-shadow:var(--shadow-cta);
}
.btn--primary:hover{background:var(--grad-accent-hover);}
.btn--ghost{
  background:var(--bg-panel);
  color:var(--text);
  border:1px solid var(--border);
}
.btn--ghost:hover{border-color:var(--text-muted);background:var(--white);}
.btn--dark{
  background:var(--text);
  color:var(--bg-panel);
}
.btn--dark:hover{background:var(--text-strong);}
.btn--sm{min-height:38px;padding:8px 16px;font-size:13.5px;}
.btn--block{width:100%;}
.btn[disabled],.btn[aria-disabled="true"]{opacity:.55;cursor:not-allowed;transform:none;}

/* ---------- 7. announce bar ---------- */
.announce{
  background:var(--announce-bg);
  color:var(--announce-text);
  font-size:13.5px;
}
.announce__inner{
  display:flex;
  align-items:center;
  gap:12px;
  min-height:44px;
}
.announce__pulse{
  position:relative;
  flex:none;
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--accent);
}
.announce__pulse::after{
  content:"";
  position:absolute;
  inset:0;
  border-radius:50%;
  background:var(--accent);
  animation:pulse-ring 2.8s ease-out infinite;
}
.announce__text{margin:0;min-width:0;}
.announce__text b{
  font-weight:600;
  color:var(--accent);
  margin-right:8px;
  letter-spacing:0.02em;
}
.announce__link{
  margin-left:auto;
  flex:none;
  color:var(--announce-text);
  text-decoration:underline;
  text-underline-offset:3px;
  text-decoration-thickness:1px;
  white-space:nowrap;
  transition:color .18s ease;
}
.announce__link:hover{color:var(--accent);}
@keyframes pulse-ring{
  0%{transform:scale(.9);opacity:.65;}
  70%{transform:scale(2.1);opacity:0;}
  100%{transform:scale(2.1);opacity:0;}
}

/* ---------- 8. header / nav / drawer / lang ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:var(--header-bg);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid var(--border);
}
.header__inner{
  display:grid;
  grid-template-columns:auto 1fr auto;
  align-items:center;
  gap:24px;
  min-height:var(--header-h);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  min-width:0;
}
.brand__mark{display:inline-flex;flex:none;}
.brand__logo{display:block;flex:none;width:32px;height:32px;border-radius:9px;}
.brand__name{
  font-family:var(--font-display);
  font-weight:800;
  font-size:21px;
  letter-spacing:-0.02em;
  color:var(--text);
  line-height:1;
}
.brand__cn{
  font-size:13px;
  font-weight:500;
  color:var(--text-muted);
  letter-spacing:0.02em;
  line-height:1.1;
  padding-left:10px;
  border-left:1px solid var(--border);
  white-space:nowrap;
}
.nav{justify-self:center;min-width:0;}
.nav__list{
  display:flex;
  align-items:center;
  gap:4px;
  list-style:none;
  margin:0;
  padding:0;
}
.nav__link{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  padding:8px 14px;
  border-radius:var(--radius-pill);
  font-size:15px;
  color:var(--text-muted);
  white-space:nowrap;
  transition:color .18s ease,background-color .18s ease;
}
.nav__link:hover{color:var(--text);background:var(--bg-panel-2);}
.nav__link.is-active{
  color:var(--text);
  font-weight:600;
  background:var(--bg-panel);
  box-shadow:inset 0 1px 0 var(--white),var(--shadow-nav);
}
.header__actions{
  display:flex;
  align-items:center;
  gap:10px;
  justify-self:end;
}
.btn-login{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:40px;
  padding:9px 18px;
  border-radius:var(--radius-pill);
  background:var(--text);
  color:var(--bg-panel);
  font-size:14px;
  font-weight:600;
  white-space:nowrap;
  transition:background-color .18s ease;
}
.btn-login:hover{background:var(--text-strong);}

/* language switcher */
.lang{position:relative;display:inline-flex;}
.lang__btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:6px;
  min-height:40px;
  padding:8px 12px;
  border-radius:var(--radius-pill);
  border:1px solid var(--border);
  background:var(--bg-panel);
  color:var(--text-muted);
  font-size:14px;
  white-space:nowrap;
  cursor:pointer;
  transition:color .18s ease,border-color .18s ease;
}
.lang__btn:hover{color:var(--text);border-color:var(--text-muted);}
.lang__btn svg{flex:none;color:var(--text-muted);}
.lang__menu{
  position:absolute;
  top:calc(100% + 8px);
  right:0;
  z-index:95;
  min-width:180px;
  padding:8px;
  border-radius:var(--radius-md);
  background:var(--bg-panel);
  border:1px solid var(--border);
  box-shadow:var(--shadow-bubble);
  display:none;
}
.lang__menu.is-open{display:block;}
.lang__item{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  min-height:44px;
  padding:8px 12px;
  border-radius:var(--radius-sm);
  font-size:14px;
  color:var(--text);
}
.lang__item:hover{background:var(--bg-panel-2);}
.lang__item[aria-current="true"]{
  background:var(--row-current);
  color:var(--accent-ink);
  font-weight:600;
}

/* hamburger + drawer */
.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  min-width:44px;
  min-height:44px;
  padding:0;
  border:1px solid var(--border);
  border-radius:var(--radius-pill);
  background:var(--bg-panel);
  color:var(--text);
  cursor:pointer;
}
.nav-toggle__bars{display:inline-flex;flex-direction:column;gap:4px;width:18px;}
.nav-toggle__bars i{
  display:block;
  height:2px;
  border-radius:2px;
  background:currentColor;
  transition:transform .18s ease,opacity .18s ease;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

.drawer{
  display:none;
  position:absolute;
  left:0;
  right:0;
  top:100%;
  z-index:3;
  padding:12px var(--gutter) 22px;
  background:var(--bg-panel);
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
  box-shadow:var(--shadow-bubble);
  max-height:calc(100dvh - var(--header-h) - 8px);
  overflow-y:auto;
  overscroll-behavior:contain;
}
.drawer.is-open{display:block;}
.drawer__list{display:flex;flex-direction:column;gap:2px;}
.drawer a{
  display:flex;
  width:100%;
  align-items:center;
  min-height:46px;
  padding:10px 12px;
  border-radius:var(--radius-sm);
  font-size:15px;
  color:var(--text);
}
.drawer a:hover,.drawer a:focus-visible{background:var(--bg-panel-2);}
.drawer__link.is-active{background:var(--bg-panel-2);font-weight:600;}
.drawer__group{margin-top:14px;padding-top:14px;border-top:1px solid var(--border);}
.drawer__group-title{
  padding:0 12px 6px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:0.12em;
  text-transform:uppercase;
  color:var(--text-muted);
}
.drawer__lang{display:flex;flex-direction:column;gap:2px;}
.drawer__lang a[aria-current="true"]{background:var(--row-current);color:var(--accent-ink);font-weight:600;}

/* mobile drawer injected by header.js (opaque panel, full-row tap targets) */
.nav-drawer{
  position:absolute;
  left:0;
  right:0;
  top:100%;
  z-index:3;
  padding:12px var(--gutter) 22px;
  background:var(--bg-panel);
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
  box-shadow:var(--shadow-bubble);
  max-height:calc(100dvh - var(--header-h) - 8px);
  overflow-y:auto;
  overscroll-behavior:contain;
}
.nav-drawer[hidden]{display:none;}
.nav-drawer__list{
  display:flex;
  flex-direction:column;
  gap:2px;
  margin:0;
  padding:0;
  list-style:none;
}
.nav-drawer__link{
  display:flex;
  width:100%;
  align-items:center;
  min-height:46px;
  padding:10px 12px;
  border-radius:var(--radius-sm);
  font-size:15px;
  color:var(--text);
}
.nav-drawer__link:hover,.nav-drawer__link:focus-visible{background:var(--bg-panel-2);}
.nav-drawer__link.is-active{background:var(--bg-panel-2);font-weight:600;}
.nav-drawer__label{
  margin:14px 0 0;
  padding:0 12px 6px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:0.12em;
  text-transform:uppercase;
  color:var(--text-muted);
}

/* ---------- 9. hero ---------- */
.hero{
  position:relative;
  overflow-x:clip;
  max-width:100%;
  min-height:calc(100svh - 124px);
  display:flex;
  align-items:center;
  padding:56px 0 64px;
}
.hero__bg{
  position:absolute;
  inset:0;
  overflow:hidden;
  pointer-events:none;
}
.hero__bg::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,var(--top-sheen) 0%,rgba(255,255,255,0) 42%,var(--bottom-sheen) 100%);
}
.hero__dots{
  position:absolute;
  inset:0;
  background-image:radial-gradient(circle,var(--dot-color) 1px,transparent 1.2px);
  background-size:22px 22px;
  -webkit-mask-image:radial-gradient(ellipse 78% 68% at 50% 42%,#000 12%,transparent 76%);
  mask-image:radial-gradient(ellipse 78% 68% at 50% 42%,#000 12%,transparent 76%);
}
.hero__glow{
  position:absolute;
  top:-14%;
  right:-6%;
  width:52%;
  max-width:100%;
  aspect-ratio:1/1;
  border-radius:50%;
  background:radial-gradient(circle at 50% 50%,var(--glow-a),transparent 62%);
  filter:blur(28px);
}
.hero__glow--b{
  top:auto;
  right:auto;
  bottom:-24%;
  left:-12%;
  width:38%;
  background:radial-gradient(circle at 50% 50%,var(--glow-b),transparent 66%);
  filter:blur(34px);
}
.hero__inner{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1.14fr);
  gap:56px;
  align-items:center;
  width:100%;
}
.hero__copy{
  position:relative;
  z-index:3;
  max-width:520px;
  min-width:0;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:6px 14px 6px 10px;
  margin-bottom:24px;
  border-radius:var(--radius-pill);
  background:var(--bg-panel);
  border:1px solid var(--border);
  box-shadow:var(--shadow-card);
  font-size:13px;
  color:var(--text-muted);
  letter-spacing:0.01em;
}
.eyebrow__dot{
  flex:none;
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--accent-dark);
  box-shadow:0 0 0 3px var(--accent-wash);
}
.hero__title{
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(38px,4.6vw,66px);
  line-height:1.06;
  letter-spacing:-0.03em;
  color:var(--text);
  margin-bottom:26px;
}
.hero__title .hl{
  color:var(--accent-ink);
  background-image:linear-gradient(180deg,transparent 68%,var(--accent-wash) 68%,var(--accent-wash) 94%,transparent 94%);
}
.hero__cta{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:14px;
  margin-bottom:28px;
}
.cta-unit{
  display:inline-flex;
  align-items:center;
  gap:12px;
  padding:6px 6px 6px 18px;
  border-radius:var(--radius-pill);
  background:var(--white);
  box-shadow:0 0 0 1px var(--border),var(--shadow-card);
  transition:transform .18s ease,box-shadow .18s ease;
}
.cta-unit:hover{transform:translateY(-1px);}
.cta-unit__hint{
  font-size:13px;
  color:var(--text-muted);
  white-space:nowrap;
  letter-spacing:0.01em;
}
.cta-unit__btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:13px 26px;
  border-radius:var(--radius-pill);
  background:var(--grad-accent);
  color:var(--text);
  font-size:16px;
  font-weight:700;
  letter-spacing:0.01em;
  white-space:nowrap;
  box-shadow:var(--shadow-cta);
  transition:background .18s ease;
}
.cta-unit:hover .cta-unit__btn{background:var(--grad-accent-hover);}
.cta-ghost{
  display:inline-flex;
  align-items:center;
  padding:14px 24px;
  border-radius:var(--radius-pill);
  border:1px solid var(--border);
  background:var(--bg-panel);
  color:var(--text);
  font-size:15px;
  font-weight:600;
  white-space:nowrap;
  transition:border-color .18s ease,background-color .18s ease;
}
.cta-ghost:hover{border-color:var(--text-muted);background:var(--white);}
.hero__lede{
  font-size:17px;
  line-height:1.62;
  color:var(--text-muted);
  margin-bottom:24px;
  max-width:480px;
}
.hero__lede strong{color:var(--text);font-weight:600;}
.trust{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 20px;
  margin-bottom:26px;
}
.trust li{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:13px;
  color:var(--text-muted);
  white-space:nowrap;
}
.trust svg{flex:none;color:var(--accent-ink);}
.platforms{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px 18px;
  padding-top:22px;
  margin-bottom:20px;
  border-top:1px dashed var(--border);
}
.platforms li{
  display:inline-flex;
  align-items:center;
  gap:7px;
  font-size:13px;
  font-weight:500;
  color:var(--text-muted);
  white-space:nowrap;
}
.platforms svg{flex:none;color:var(--text-muted);}
.flags{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 14px;
}
.flags li{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12.5px;
  color:var(--text-muted);
  white-space:nowrap;
}
.flag{
  display:inline-flex;
  flex:none;
  border-radius:var(--radius-flag);
  overflow:hidden;
  box-shadow:0 0 0 1px var(--border);
}
.flag svg{display:block;width:22px;height:15px;}
.hero__device{
  position:relative;
  z-index:2;
  min-width:0;
}

/* ---------- 10. panels & cards ---------- */
.panel{
  background:var(--bg-panel);
  border-radius:var(--radius-xl);
  padding:clamp(20px,3vw,32px);
  box-shadow:var(--shadow-panel),inset 0 1px 0 var(--hairline);
  min-width:0;
}
.panel--grad{background:var(--grad-panel);}
.card{
  background:var(--white);
  border-radius:var(--radius-lg);
  padding:22px;
  box-shadow:inset 0 1px 0 var(--white),var(--shadow-card);
  min-width:0;
}
.card__title{font-size:18px;font-weight:700;margin-bottom:8px;}
.card__text{font-size:15px;color:var(--text-muted);}
.fact-tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  max-width:100%;
  overflow:hidden;
  padding:5px 12px;
  border-radius:var(--radius-pill);
  background:var(--bg-panel-2);
  color:var(--text);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:0.02em;
  white-space:nowrap;
  text-overflow:ellipsis;
}
.fact-tag--accent{background:var(--row-current);color:var(--accent-ink);}
.divider{height:1px;background:var(--border);border:0;margin-block:var(--sp-6);}

/* ---------- 11. footer ---------- */
.site-footer{
  margin-top:clamp(48px,6vw,96px);
  background:var(--grad-foot);
  border-top:1px solid var(--border);
  color:var(--text);
}
.footer__inner{
  display:grid;
  grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,1fr));
  gap:clamp(24px,3.4vw,48px);
  padding-block:clamp(40px,5vw,64px) clamp(28px,3.4vw,40px);
}
.footer__brand{min-width:0;}
.footer__tagline{
  margin-top:14px;
  font-size:14px;
  line-height:1.65;
  color:var(--text-muted);
  max-width:34ch;
}
.footer__fact{
  margin-top:12px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:0.04em;
  color:var(--accent-ink);
}
.footer__heading{
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:600;
  letter-spacing:0.12em;
  text-transform:uppercase;
  color:var(--text-muted);
  margin-bottom:12px;
}
.footer__list{display:flex;flex-direction:column;gap:2px;}
.footer__link{
  display:inline-flex;
  align-items:center;
  min-height:34px;
  font-size:14.5px;
  color:var(--text-muted);
  transition:color .18s ease;
}
.footer__link:hover{color:var(--text);}
.footer__kw{display:flex;flex-wrap:wrap;gap:6px;}
.footer__kw a{
  display:inline-flex;
  align-items:center;
  max-width:100%;
  padding:5px 11px;
  border-radius:var(--radius-pill);
  background:var(--bg-panel);
  border:1px solid var(--border);
  font-size:12.5px;
  color:var(--text-muted);
  transition:color .18s ease,border-color .18s ease;
}
.footer__kw a:hover{color:var(--text);border-color:var(--text-muted);}
.footer__bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px 24px;
  padding-block:18px 26px;
  border-top:1px solid var(--border);
}
.footer__copy{font-size:13px;color:var(--text-muted);}
.footer__legal{display:flex;flex-wrap:wrap;gap:6px 18px;}
.footer__legal a{
  display:inline-flex;
  align-items:center;
  min-height:28px;
  font-size:13px;
  color:var(--text-muted);
}
.footer__legal a:hover{color:var(--text);}

/* ---------- 12. reveal ---------- */
.reveal{transition:opacity .55s ease,transform .55s ease;}
.reveal.pending{opacity:0;transform:translateY(16px);}

/* ---------- 13. overflow & truncation guards ---------- */
code,kbd,samp{font-family:var(--font-mono);}
code{
  font-size:0.92em;
  padding:2px 6px;
  border-radius:6px;
  background:var(--bg-panel-2);
  color:var(--text);
  overflow-wrap:anywhere;
  word-break:break-word;
}
pre{
  max-width:100%;
  overflow-x:auto;
  -webkit-overflow-scrolling:touch;
  padding:16px;
  border-radius:var(--radius-md);
  background:var(--bg-panel-2);
  font-size:13.5px;
  line-height:1.6;
}
pre code{background:none;padding:0;overflow-wrap:normal;white-space:pre;}
#server-status{
  display:block;
  max-width:100%;
  overflow:hidden;
  margin-block:0 var(--sp-6);
}
.tilt{transform:rotate(-0.45deg);}
.overflow-clip{overflow-x:clip;max-width:100%;}

/* ---------- responsive ---------- */
@media (max-width:1180px){
  .hero__inner{gap:40px;}
  .nav__link{padding:8px 11px;font-size:14px;}
  .brand__cn{display:none;}
  .footer__inner{grid-template-columns:minmax(0,1.4fr) repeat(3,minmax(0,1fr));}
}

@media (max-width:1024px){
  .hero{min-height:0;padding:52px 0 72px;}
  .hero__inner{grid-template-columns:minmax(0,1fr);gap:64px;}
  .hero__copy{max-width:640px;}
  .hero__device{max-width:620px;margin:0 auto;width:100%;}
  .grid--4{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer__inner{grid-template-columns:repeat(2,minmax(0,1fr));}
}

@media (max-width:900px){
  :root{--header-h:64px;}
  .header__inner{
    grid-template-columns:minmax(0,1fr) auto;
    gap:10px;
    padding-block:10px;
    min-height:0;
  }
  .nav{display:none;}
  .nav-toggle{display:inline-flex;}
  .header__actions{margin-left:auto;}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .section__head{margin-bottom:28px;}
}

@media (max-width:768px){
  h1{font-size:clamp(28px,7.4vw,40px);}
  h2{font-size:clamp(24px,6vw,32px);}
  .lede{font-size:16.5px;}
}

@media (max-width:640px){
  :root{--gutter:20px;}
  .no-break{white-space:normal;}
  .hero__title{font-size:clamp(32px,8.6vw,40px);}
  .hero__lede{font-size:16px;}
  .announce__inner{min-height:40px;font-size:12.5px;}
  .announce__link{display:none;}
  .cta-unit{padding-left:14px;}
  .cta-unit__hint{display:none;}
  .tilt{transform:none;}
  .grid--2,.grid--3,.grid--4{grid-template-columns:minmax(0,1fr);}
  .footer__inner{grid-template-columns:minmax(0,1fr);}
  .footer__bottom{flex-direction:column;align-items:flex-start;}
  .lang{display:none;}
}

@media (max-width:380px){
  :root{--gutter:16px;}
  .brand__name{font-size:19px;}
  .btn-login{padding:8px 14px;font-size:13px;}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal,.reveal.pending{opacity:1;transform:none;transition:none;}
  .announce__pulse::after{animation:none;}
  .btn,.btn-login,.nav__link,.lang__btn,.cta-unit,.cta-ghost,.skip-link,.nav-toggle__bars i{transition:none;}
  .btn:hover,.cta-unit:hover{transform:none;}
}

/* lh:local-harden:start */
:is(h1,h2,h3,h4){text-wrap:balance}
:is(p,li,dd,dt,figcaption,blockquote,td,th){text-wrap:pretty}
html[lang|="ko"] body{word-break:keep-all;overflow-wrap:break-word}
html[lang|="ja"] :is(h1,h2,h3,h4){word-break:auto-phrase}
.lh-tscroll{overflow-x:auto;max-width:100%;-webkit-overflow-scrolling:touch}
@media (max-width:640px){.lh-tscroll :is(th,td){min-width:5.5em}}
@supports (animation-timeline:scroll()){
  .float-cta{animation:lh-fab-in linear both;animation-timeline:scroll(root);animation-range:0 70vh}
}
@keyframes lh-fab-in{0%,45%{opacity:0;visibility:hidden}100%{opacity:1;visibility:visible}}
/* lh:local-harden:end */