/* =========================================================
   AI Admin.cn — premium domain sale page
   Visual language: dark canvas, blue-gray radial hero,
   Montserrat display / DM Sans body / Fragment Mono labels.
   ========================================================= */

@font-face {
  font-family: "DM Sans";
  src: url("../fonts/dm-sans-400.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "DM Sans";
  src: url("../fonts/dm-sans-500.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "DM Sans";
  src: url("../fonts/dm-sans-700.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Montserrat";
  src: url("../fonts/montserrat-500.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Montserrat";
  src: url("../fonts/montserrat-600.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Fragment Mono";
  src: url("../fonts/fragment-mono-latin.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

/* ---------- tokens ---------- */
:root {
  --bg: #0a0a0a;
  --bg-soft: #0c0d10;
  --card: #101114;
  --card-2: #0d0e11;
  --line: rgba(255, 255, 255, 0.1);
  --line-soft: rgba(255, 255, 255, 0.06);
  --text: #f7f8fa;
  --muted: rgba(255, 255, 255, 0.56);
  --faint: rgba(255, 255, 255, 0.36);
  --brand: #679efe;
  --brand-soft: #a6c2ff;
  --green: #4ed17e;
  --radius-card: 24px;
  --radius-panel: 16px;
  --font-body: "DM Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-display: "Montserrat", "DM Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "Fragment Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas,
    "PingFang SC", "Microsoft YaHei", monospace;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --container: 1140px;
  --shadow-card: 0 24px 80px rgba(0, 0, 0, 0.45);
}

/* ---------- reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
  background: var(--bg);
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: clip;
}

h1, h2, h3, h4, p, figure { margin: 0; }
h1, h2, h3 { text-wrap: balance; }
p { text-wrap: pretty; }
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
svg { display: block; }
img { max-width: 100%; display: block; }
code { font-family: var(--font-mono); }
[hidden] { display: none !important; }

::selection { background: var(--brand); color: #fff; }

:focus-visible {
  outline: 2px solid var(--brand-soft);
  outline-offset: 3px;
  border-radius: 4px;
}

.container {
  width: min(100% - 48px, var(--container));
  margin-inline: auto;
}
@media (min-width: 768px) {
  .container { width: min(100% - 144px, var(--container)); }
}
@media (min-width: 1560px) {
  .container { width: min(100% - 160px, 1280px); }
}

.skip-link {
  position: fixed;
  top: -80px;
  left: 20px;
  z-index: 300;
  padding: 10px 18px;
  border-radius: 999px;
  background: #fff;
  color: #0a0a0a;
  font-size: 14px;
  font-weight: 500;
  transition: top 0.2s ease;
}
.skip-link:focus { top: 16px; }

/* ---------- shared type ---------- */
.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.34);
}

.mono-label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.34);
}

.icon { width: 16px; height: 16px; flex: none; }
.nowrap { white-space: nowrap; }

/* ---------- buttons ---------- */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 24px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 500;
  line-height: 1;
  white-space: nowrap;
  transition: background-color 0.25s ease, border-color 0.25s ease,
    color 0.25s ease, transform 0.25s var(--ease), box-shadow 0.25s ease;
}
.btn-primary {
  background: #f4f5f7;
  color: #0a0a0a;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.25) inset;
}
.btn-primary:hover {
  background: #fff;
  transform: translateY(-1px);
  box-shadow: 0 12px 34px rgba(255, 255, 255, 0.14);
}
.btn-ghost {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.18);
  color: #fff;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.32);
}
.btn-s {
  height: 38px;
  padding: 0 17px;
  font-size: 14px;
  gap: 6px;
}
.btn-s .icon { width: 14px; height: 14px; }

/* ---------- header ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  border-bottom: 1px solid transparent;
  transition: background-color 0.35s ease, border-color 0.35s ease,
    backdrop-filter 0.35s ease;
}
.site-header.is-scrolled {
  background: rgba(10, 10, 10, 0.86);
  border-bottom-color: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(22px) saturate(150%);
  -webkit-backdrop-filter: blur(22px) saturate(150%);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 76px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  flex: none;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 9px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: linear-gradient(145deg, #202329, #0d0e11);
  color: #fff;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.14), 0 3px 10px rgba(0, 0, 0, 0.4);
}
.brand-mark svg { width: 15px; height: 15px; }
.brand-word {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.015em;
  color: #fff;
}
.brand-chip {
  padding: 3px 6px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 5px;
  font-family: var(--font-mono);
  font-size: 9.5px;
  line-height: 1;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.62);
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 30px;
  margin-left: auto;
}
.desktop-nav a {
  position: relative;
  padding: 6px 0;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.58);
  transition: color 0.2s ease;
}
.desktop-nav a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -3px;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: #fff;
  opacity: 0;
  transform: translateX(-50%) scale(0.4);
  transition: opacity 0.25s ease, transform 0.25s ease;
}
.desktop-nav a:hover { color: #fff; }
.desktop-nav a.is-active { color: #fff; }
.desktop-nav a.is-active::after { opacity: 1; transform: translateX(-50%) scale(1); }

.header-actions { display: flex; align-items: center; gap: 10px; }
.header-cta { flex: none; }

.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  width: 38px;
  height: 38px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.03);
}
.menu-toggle span {
  display: block;
  width: 14px;
  height: 1.5px;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.8);
  transition: transform 0.25s ease, opacity 0.2s ease;
}
.menu-toggle[aria-expanded="true"] span:first-child {
  transform: translateY(3.25px) rotate(45deg);
}
.menu-toggle[aria-expanded="true"] span:last-child {
  transform: translateY(-3.25px) rotate(-45deg);
}

.mobile-menu {
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(10, 10, 10, 0.985);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  max-height: calc(100svh - 68px);
  overflow-y: auto;
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.55);
}
body.menu-open .site-header { background: rgba(10, 10, 10, 0.985); }
.mobile-menu nav {
  display: block;
  padding: 8px 0 26px;
}
.mobile-menu a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 17px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  font-size: 17px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.86);
}
.mobile-menu a span {
  font-family: var(--font-mono);
  font-size: 10px;
  color: rgba(255, 255, 255, 0.28);
  letter-spacing: 0.12em;
}
.mobile-contact {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 20px 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.4);
}

/* ---------- hero ---------- */
.hero {
  position: relative;
  padding-top: 156px;
  overflow: hidden;
  isolation: isolate;
}
.hero-bg {
  position: absolute;
  inset: 0 0 auto;
  height: 1240px;
  z-index: -2;
  background:
    radial-gradient(ellipse 62% 54% at 84% 20%, rgba(148, 157, 170, 0.62), transparent 72%),
    radial-gradient(ellipse 58% 56% at 88% 42%, rgba(56, 99, 154, 0.55), transparent 70%),
    radial-gradient(ellipse 95% 70% at 52% 0%, rgba(23, 42, 68, 0.9), transparent 72%),
    radial-gradient(ellipse 60% 50% at 8% 16%, rgba(20, 35, 56, 0.55), transparent 70%);
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, #000 44%, transparent 94%);
  mask-image: linear-gradient(to bottom, #000 0%, #000 44%, transparent 94%);
  opacity: 0.92;
}
.hero-grain {
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.05;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.82' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.6'/%3E%3C/svg%3E");
  -webkit-mask-image: linear-gradient(to bottom, #000, transparent 88%);
  mask-image: linear-gradient(to bottom, #000, transparent 88%);
}
.hero-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.hero-copy {
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 860px;
  text-align: center;
}

/* entrance */
.hero-copy > *,
.preview-wrap {
  animation: heroIn 0.95s var(--ease) both;
  animation-delay: var(--enter-delay, 0s);
}
@keyframes heroIn {
  from { opacity: 0; transform: translateY(24px); filter: blur(9px); }
  to { opacity: 1; transform: translateY(0); filter: blur(0); }
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 400;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.5);
}
.badge .sparkle { width: 14px; height: 14px; flex: none; transform: translateY(-1px); }

.hero-title {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: 24px;
  font-weight: 500;
}
.hero-brand {
  font-family: var(--font-display);
  font-size: clamp(54px, 7.8vw, 94px);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.045em;
  color: #fff;
  padding-right: 0.045em;
}
.hero-tld {
  background: linear-gradient(180deg, #ffffff 8%, #93b4ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-tagline {
  margin-top: 20px;
  font-family: var(--font-body);
  font-size: clamp(23px, 3vw, 36px);
  font-weight: 500;
  line-height: 1.42;
  letter-spacing: 0.005em;
  color: rgba(255, 255, 255, 0.94);
}
.hero-desc {
  margin-top: 26px;
  max-width: 680px;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.56);
}
.hero-cta {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 34px;
}
.hero-status {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 10px 24px;
  margin-top: 28px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.5);
}
.hero-status span + span { position: relative; }
.hero-status span + span::before {
  content: "";
  position: absolute;
  left: -13px;
  top: 50%;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-50%);
}
.status-live {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: rgba(194, 242, 210, 0.78);
}
.status-live i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 4px rgba(78, 209, 126, 0.12), 0 0 12px rgba(78, 209, 126, 0.7);
  animation: pulse 2.4s ease-out infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(78, 209, 126, 0.1), 0 0 10px rgba(78, 209, 126, 0.55); }
  50% { box-shadow: 0 0 0 6px rgba(78, 209, 126, 0.04), 0 0 18px rgba(78, 209, 126, 0.8); }
}

/* ---------- console preview ---------- */
.preview-wrap {
  position: relative;
  width: 100%;
  max-width: 1040px;
  margin-top: 64px;
}
.preview-glow {
  position: absolute;
  inset: -8% -6% -12%;
  z-index: -1;
  background: radial-gradient(ellipse 55% 55% at 50% 42%, rgba(86, 134, 254, 0.24), transparent 68%);
  filter: blur(50px);
}
.preview {
  position: relative;
  overflow: hidden;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: #0b0c0f;
  box-shadow:
    0 0 0 1px rgba(0, 0, 0, 0.45),
    0 24px 60px rgba(0, 0, 0, 0.45),
    0 60px 160px rgba(0, 0, 0, 0.55),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
  color: #f5f6f8;
  user-select: none;
}
.preview-bar {
  display: flex;
  align-items: center;
  gap: 14px;
  height: 44px;
  padding: 0 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.015));
}
.traffic { display: flex; gap: 7px; }
.traffic i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #ff5f57;
  box-shadow: inset 0 0 0 0.5px rgba(0, 0, 0, 0.2);
}
.traffic i:nth-child(2) { background: #febc2e; }
.traffic i:nth-child(3) { background: #28c840; }
.preview-url {
  display: flex;
  align-items: center;
  gap: 6px;
  height: 26px;
  margin-inline: auto;
  padding: 0 12px;
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(0, 0, 0, 0.32);
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: rgba(255, 255, 255, 0.58);
  letter-spacing: 0.01em;
}
.preview-url svg { width: 11px; height: 11px; color: rgba(255, 255, 255, 0.3); }
.preview-url .url-path { color: rgba(255, 255, 255, 0.28); }
.preview-live {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: var(--font-mono);
  font-size: 8.5px;
  letter-spacing: 0.16em;
  color: rgba(126, 223, 160, 0.8);
}
.preview-live i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px rgba(78, 209, 126, 0.7);
}

.console {
  display: flex;
  min-height: 480px;
  font-size: 11px;
  line-height: 1.4;
  letter-spacing: 0;
}
.console-side {
  display: flex;
  flex-direction: column;
  flex: none;
  width: 218px;
  padding: 14px 13px;
  border-right: 1px solid rgba(255, 255, 255, 0.06);
  background:
    linear-gradient(180deg, rgba(104, 137, 220, 0.07), transparent 38%),
    #101116;
}
.c-brand {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 0 3px;
  font-family: var(--font-display);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.c-mark {
  display: grid;
  place-items: center;
  width: 20px;
  height: 20px;
  border-radius: 6px;
  background: #fff;
  color: #0a0a0a;
  font-family: var(--font-display);
  font-size: 10px;
  font-weight: 600;
}
.c-chip {
  padding: 2px 4px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 6.5px;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.45);
}
.c-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-top: 16px;
}
.c-nav-item {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 30px;
  padding: 0 9px;
  border-radius: 7px;
  color: rgba(255, 255, 255, 0.48);
  font-size: 11px;
}
.c-nav-item svg { width: 13px; height: 13px; flex: none; opacity: 0.8; }
.c-nav-item.is-active {
  background: rgba(255, 255, 255, 0.085);
  color: #fff;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
}
.c-nav-item.is-active svg { color: #a9c5ff; opacity: 1; }
.c-count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 8.5px;
  color: rgba(255, 255, 255, 0.34);
}
.c-label {
  margin: 17px 0 5px;
  padding: 0 9px;
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.26);
}
.c-user {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
  padding: 13px 3px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.c-avatar {
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: linear-gradient(135deg, #4d6bfe, #9b8cff);
  font-family: var(--font-mono);
  font-size: 8px;
  color: #fff;
}
.c-user div { min-width: 0; }
.c-user strong { display: block; font-size: 9px; font-weight: 500; color: rgba(255, 255, 255, 0.82); }
.c-user div span { display: block; font-size: 7.5px; color: rgba(255, 255, 255, 0.3); }
.c-more { margin-left: auto; font-size: 9px; color: rgba(255, 255, 255, 0.3); }

.console-main {
  flex: 1;
  min-width: 0;
  padding: 19px 20px;
  background: #0b0c0f;
}
.c-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; }
.c-top h4 {
  font-size: 15px;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: #fff;
}
.c-top p { margin-top: 5px; font-size: 10px; color: rgba(255, 255, 255, 0.5); }
.c-actions { display: flex; align-items: center; gap: 7px; flex: none; }
.c-date { font-family: var(--font-mono); font-size: 8.5px; color: rgba(255, 255, 255, 0.5); }
.c-btn-dark {
  padding: 6px 9px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  font-size: 9.5px;
  color: rgba(255, 255, 255, 0.55);
}
.c-btn-light {
  padding: 6px 10px;
  border-radius: 6px;
  background: #f2f3f5;
  color: #111;
  font-size: 9.5px;
  font-weight: 500;
}
.c-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 18px;
}
.c-stat {
  padding: 11px 12px;
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 10px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.028), transparent);
}
.c-stat-label { font-size: 9px; color: rgba(255, 255, 255, 0.38); }
.c-stat-row { display: flex; align-items: baseline; gap: 8px; margin-top: 5px; }
.c-stat-row strong {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: #fff;
}
.c-stat-row strong span { font-size: 11px; color: rgba(255, 255, 255, 0.5); }
.c-trend {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 8px;
  color: rgba(126, 223, 160, 0.85);
}
.c-bars {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 24px;
  margin-top: 9px;
}
.c-bars i {
  flex: 1;
  height: var(--h);
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.1);
}
.c-bars i.on { background: linear-gradient(180deg, #8cb7ff, #4a7df0); }

.c-grid {
  display: grid;
  grid-template-columns: 1.55fr 1fr;
  gap: 10px;
  margin-top: 10px;
}
.c-chart,
.c-side {
  padding: 12px;
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 10px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.022), transparent);
}
.c-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-size: 10px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.76);
}
.c-legend {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: var(--font-mono);
  font-size: 7.5px;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.3);
}
.c-legend i { width: 5px; height: 5px; border-radius: 50%; background: var(--brand); }
.c-link { font-family: var(--font-mono); font-size: 7.5px; font-weight: 400; color: rgba(255, 255, 255, 0.3); }
.chart { width: 100%; height: 150px; margin-top: 8px; }
.c-axis {
  display: flex;
  justify-content: space-between;
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 7px;
  color: rgba(255, 255, 255, 0.24);
}
.c-side { display: flex; flex-direction: column; }
.c-agent {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 7px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}
.c-agent:first-of-type { margin-top: 5px; }
.c-dot { width: 5px; height: 5px; border-radius: 50%; flex: none; }
.c-dot.is-green { background: #4ed17e; box-shadow: 0 0 6px rgba(78, 209, 126, 0.6); }
.c-dot.is-blue { background: #679efe; box-shadow: 0 0 6px rgba(103, 158, 254, 0.6); }
.c-dot.is-violet { background: #a797fc; box-shadow: 0 0 6px rgba(167, 151, 252, 0.55); }
.c-agent div { flex: 1; min-width: 0; }
.c-agent strong { display: block; font-size: 9px; font-weight: 500; color: rgba(255, 255, 255, 0.82); }
.c-agent div span { display: block; font-size: 7.5px; color: rgba(255, 255, 255, 0.28); }
.c-agent em { font-style: normal; font-size: 7.5px; color: rgba(255, 255, 255, 0.3); }
.c-node { margin-top: auto; padding-top: 10px; border-top: 1px solid rgba(255, 255, 255, 0.06); }
.c-node-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 8.5px;
  color: rgba(255, 255, 255, 0.4);
}
.c-node-head strong { font-size: 9px; font-weight: 500; color: #9cc2ff; }
.c-progress {
  height: 4px;
  margin: 7px 0;
  border-radius: 99px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
}
.c-progress i {
  display: block;
  width: 68%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #3964fe, #7fb0ff);
}
.c-node-foot {
  display: flex;
  justify-content: space-between;
  font-size: 7px;
  color: rgba(255, 255, 255, 0.26);
}
.c-activity {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 10px;
  padding: 10px 12px;
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 10px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.022), transparent);
}
.c-activity-label {
  flex: none;
  font-size: 9px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.68);
}
.c-activity-items {
  display: flex;
  flex: 1;
  flex-wrap: wrap;
  gap: 6px 20px;
  min-width: 0;
}
.c-activity-items > span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 8.5px;
  color: rgba(255, 255, 255, 0.36);
  white-space: nowrap;
}
.c-activity-items em {
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 7.5px;
  color: rgba(255, 255, 255, 0.22);
}

.preview-caption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 14px;
  padding: 0 4px;
  font-size: 11px;
  color: rgba(255, 255, 255, 0.26);
}
.preview-caption .mono {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.2em;
  color: rgba(255, 255, 255, 0.2);
}

/* ---------- hero facts ---------- */
.hero-facts {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  width: 100%;
  margin-top: 72px;
  padding: 25px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.fact {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  text-align: center;
  position: relative;
}
.fact + .fact::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8%;
  bottom: 8%;
  width: 1px;
  background: rgba(255, 255, 255, 0.08);
}
.fact strong {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: #fff;
}
.fact:last-child strong { font-size: 20px; letter-spacing: -0.01em; }
.fact span { font-size: 12px; color: rgba(255, 255, 255, 0.4); }

/* ---------- sections ---------- */
.section {
  position: relative;
  padding: 126px 0;
}
.section-head {
  max-width: 750px;
  margin: 0 auto 56px;
  text-align: center;
}
.section-head h2 {
  margin-top: 18px;
  font-family: var(--font-display);
  font-size: clamp(30px, 3.9vw, 42px);
  font-weight: 500;
  line-height: 1.36;
  letter-spacing: -0.03em;
  color: #fff;
}
.section-head p {
  max-width: 620px;
  margin: 18px auto 0;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.5);
  text-wrap: balance;
}

/* ---------- meaning ---------- */
.meaning-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.meaning-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 420px;
  padding: 34px 34px 38px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.012));
}
.meaning-card::after {
  content: "";
  position: absolute;
  top: -40%;
  right: -30%;
  width: 70%;
  height: 80%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(90, 123, 200, 0.16), transparent 68%);
  pointer-events: none;
}
.meaning-card:nth-child(2)::after {
  background: radial-gradient(circle, rgba(139, 124, 255, 0.14), transparent 68%);
}
.meaning-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.meaning-index {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.25);
}
.meaning-word {
  margin: 32px 0 24px;
  font-family: var(--font-display);
  font-size: clamp(86px, 10vw, 128px);
  font-weight: 500;
  line-height: 0.9;
  letter-spacing: -0.06em;
  background: linear-gradient(180deg, #ffffff 0%, rgba(255, 255, 255, 0.3) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  padding-right: 0.04em;
}
.meaning-card h3 {
  font-size: 24px;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: #fff;
}
.meaning-card p {
  max-width: 420px;
  margin-top: 12px;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.48);
}
.equation {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-top: 40px;
  padding: 24px 30px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.02);
}
.equation-item {
  padding: 5px 13px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.035);
  font-family: var(--font-display);
  font-size: 17px;
  color: #fff;
}
.equation-op { font-size: 14px; color: rgba(255, 255, 255, 0.28); }
.equation-result {
  font-size: 20px;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: #cfe0ff;
}
.equation-note {
  margin-left: auto;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.32);
}

/* ---------- value ---------- */
.value-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.value-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 280px;
  padding: 34px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.01));
  transition: border-color 0.3s ease, background-color 0.3s ease;
}
.value-card:hover { border-color: rgba(255, 255, 255, 0.18); }
.value-card::after {
  content: "";
  position: absolute;
  inset: auto -30% -55% auto;
  width: 70%;
  height: 80%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(77, 107, 254, 0.12), transparent 68%);
  pointer-events: none;
}
.value-card-wide { grid-column: span 2; }
.value-card-wide:not(.value-card-bottom) {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 48px;
  min-height: 230px;
}
.value-card-wide:not(.value-card-bottom) .tiles {
  justify-content: flex-end;
  max-width: 440px;
  margin-top: 0;
}
.value-card:not(.value-card-wide) .value-big,
.value-card:not(.value-card-wide) .keyword-pair { margin-top: auto; padding-top: 22px; }
.value-card h3 {
  margin-top: 18px;
  font-size: 20px;
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: -0.015em;
  color: #fff;
}
.value-card h3 strong {
  font-family: var(--font-display);
  font-size: 44px;
  font-weight: 500;
  letter-spacing: -0.04em;
  margin-right: 4px;
}
.value-card p {
  max-width: 470px;
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.46);
}
.value-big {
  margin: 22px 0 2px;
  font-family: var(--font-display);
  font-size: 60px;
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.05em;
  color: #fff;
}
.tiles {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin-top: 28px;
}
.tiles span {
  display: grid;
  place-items: center;
  width: 38px;
  height: 44px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.035);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.07);
  font-family: var(--font-mono);
  font-size: 15px;
  color: rgba(255, 255, 255, 0.78);
}
.tiles .tile-gap {
  width: 12px;
  border: 0;
  background: none;
  box-shadow: none;
}
.tiles em {
  margin-left: 10px;
  padding: 6px 9px;
  border: 1px dashed rgba(143, 176, 255, 0.3);
  border-radius: 6px;
  font-family: var(--font-mono);
  font-style: normal;
  font-size: 12px;
  color: #9db8ff;
}
.keyword-pair {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 26px;
}
.keyword-pair span {
  padding: 8px 12px;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.04);
  font-family: var(--font-mono);
  font-size: 13px;
  color: rgba(255, 255, 255, 0.8);
}
.keyword-pair i { font-style: normal; color: rgba(255, 255, 255, 0.28); }
.value-card-bottom {
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  min-height: 220px;
}
.value-copy { flex: 1; min-width: 0; }
.scenario-chips {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
  max-width: 380px;
}
.scenario-chips span {
  padding: 7px 12px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.025);
  font-size: 12px;
  color: rgba(255, 255, 255, 0.5);
  white-space: nowrap;
}

/* ---------- use cases ---------- */
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.case-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 232px;
  padding: 26px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.008));
  transition: border-color 0.3s ease, background-color 0.3s ease;
}
.case-card::after {
  content: "";
  position: absolute;
  top: -50%;
  right: -30%;
  width: 65%;
  height: 90%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(103, 158, 254, 0.1), transparent 70%);
  opacity: 0;
  transition: opacity 0.35s ease;
  pointer-events: none;
}
.case-card:hover {
  border-color: rgba(255, 255, 255, 0.2);
  background-color: rgba(255, 255, 255, 0.02);
}
.case-card:hover::after { opacity: 1; }
.case-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}
.case-icon {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 11px;
  background: rgba(255, 255, 255, 0.04);
  color: #a9c5ff;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}
.case-icon svg { width: 20px; height: 20px; }
.case-card:hover .case-icon {
  border-color: rgba(103, 158, 254, 0.4);
  background: rgba(103, 158, 254, 0.12);
}
.case-num {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.25);
}
.case-card h3 {
  margin: 28px 0 10px;
  font-size: 17px;
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: -0.01em;
  color: #fff;
}
.case-card p {
  font-size: 13.5px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.44);
}

/* ---------- domain file ---------- */
.file-panel {
  display: grid;
  grid-template-columns: 1.12fr 1fr;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 28px;
  background:
    radial-gradient(ellipse 60% 70% at 0% 0%, rgba(32, 74, 126, 0.26), transparent 60%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.008));
}
.file-main {
  padding: 44px;
  border-right: 1px solid rgba(255, 255, 255, 0.08);
}
.file-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.16em;
  color: rgba(169, 235, 190, 0.85);
}
.file-status i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 4px rgba(78, 209, 126, 0.1);
  animation: pulse 2.4s ease-out infinite;
}
.file-domain {
  margin-top: 20px;
  font-family: var(--font-display);
  font-size: clamp(38px, 4.6vw, 54px);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.045em;
  color: #fff;
}
.file-domain span {
  background: linear-gradient(180deg, #fff 8%, #8fb0ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.file-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}
.file-badges span {
  padding: 5px 10px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
  font-size: 11px;
  color: rgba(255, 255, 255, 0.55);
}
.copy-domain {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 36px;
  margin-top: 20px;
  padding: 0 14px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.75);
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.copy-domain .icon { width: 13px; height: 13px; }
.copy-domain:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.28);
  color: #fff;
}
.extensions {
  margin-top: 42px;
  padding-top: 26px;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
}
.extension-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0 22px;
  margin-top: 14px;
}
.extension-list div {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 8px 0;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.06);
}
.extension-list code {
  font-size: 11.5px;
  color: rgba(255, 255, 255, 0.66);
  white-space: nowrap;
}
.extension-list div span {
  font-size: 10.5px;
  color: rgba(255, 255, 255, 0.3);
  text-align: right;
}
.extension-note {
  margin-top: 14px;
  font-size: 10.5px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.25);
}
.file-specs {
  display: flex;
  flex-direction: column;
  padding: 36px 40px;
}
.spec-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
  padding: 15px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}
.spec-row > span { flex: none; font-size: 12px; color: rgba(255, 255, 255, 0.34); }
.spec-row strong {
  font-size: 13.5px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.86);
  text-align: right;
}
.spec-row strong em {
  display: block;
  margin-top: 3px;
  font-style: normal;
  font-size: 10.5px;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.3);
}
.spec-highlight { color: #cfe0ff !important; }
.spec-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: auto;
  padding-top: 26px;
  font-size: 14px;
  font-weight: 500;
  color: #fff;
}
.spec-cta .icon { color: rgba(255, 255, 255, 0.55); transition: transform 0.25s ease; }
.spec-cta:hover .icon { transform: translateX(3px); }

/* ---------- process ---------- */
.section-process { padding-top: 60px; }
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}
.process-step {
  position: relative;
  padding: 26px 18px 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}
.process-step::before {
  content: "";
  position: absolute;
  left: 0;
  top: -3.5px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #679efe;
  box-shadow: 0 0 0 4px rgba(103, 158, 254, 0.1);
}
.process-num {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: #8fb0ff;
}
.process-step h3 {
  margin: 20px 0 9px;
  font-size: 18px;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: #fff;
}
.process-step p {
  font-size: 13.5px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.44);
}
.process-note {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  width: fit-content;
  max-width: 100%;
  margin: 46px auto 0;
  padding: 11px 18px;
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.02);
  font-size: 11.5px;
  color: rgba(255, 255, 255, 0.38);
}
.process-note .icon { width: 14px; height: 14px; color: rgba(126, 223, 160, 0.7); flex: none; }

/* ---------- contact ---------- */
.section-contact { padding-top: 90px; padding-bottom: 130px; }
.contact-panel {
  position: relative;
  overflow: hidden;
  padding: 88px 40px 60px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 32px;
  background: #0b0c0f;
  text-align: center;
  isolation: isolate;
}
.contact-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 62% 78% at 50% -14%, rgba(84, 134, 254, 0.3), transparent 62%),
    radial-gradient(ellipse 45% 60% at 92% 108%, rgba(32, 74, 126, 0.32), transparent 70%),
    linear-gradient(180deg, #0e1119 0%, #0a0a0a 100%);
}
.contact-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.3;
  background-image: linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(ellipse 65% 70% at 50% 0%, #000, transparent 75%);
  mask-image: radial-gradient(ellipse 65% 70% at 50% 0%, #000, transparent 75%);
}
.contact-inner { position: relative; z-index: 1; }
.contact-panel h2 {
  margin-top: 18px;
  font-family: var(--font-display);
  font-size: clamp(30px, 4.2vw, 46px);
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: -0.03em;
  color: #fff;
}
.contact-desc {
  max-width: 640px;
  margin: 20px auto 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.5);
  text-wrap: balance;
}
.contact-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  max-width: 780px;
  margin: 40px auto 0;
  text-align: left;
}
.contact-card {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 18px 20px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.045);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: background-color 0.25s ease, border-color 0.25s ease;
}
.contact-card:hover {
  border-color: rgba(255, 255, 255, 0.24);
  background: rgba(255, 255, 255, 0.07);
}
.contact-icon {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  flex: none;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.05);
  color: rgba(255, 255, 255, 0.72);
}
.contact-icon svg { width: 22px; height: 22px; }
.contact-text { flex: 1; min-width: 0; }
.contact-text .mono-label {
  margin-bottom: 6px;
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: rgba(255, 255, 255, 0.5);
}
.contact-text strong {
  display: block;
  font-size: 19px;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: #fff;
}
.contact-action {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex: none;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.42);
  transition: color 0.2s ease;
}
.contact-action .icon { width: 13px; height: 13px; }
.contact-card:hover .contact-action { color: rgba(255, 255, 255, 0.7); }
.contact-foot {
  margin-top: 26px;
  font-size: 11px;
  color: rgba(255, 255, 255, 0.28);
}

/* ---------- footer ---------- */
.site-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: #080808;
  padding-top: 62px;
}
.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
}
.footer-brand p {
  margin-top: 18px;
  font-size: 12.5px;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.46);
}
.footer-nav {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-nav a {
  width: fit-content;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.52);
  transition: color 0.2s ease;
}
.footer-nav a:hover { color: #fff; }
.footer-contact {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
}
.footer-contact .mono-label { margin-bottom: 2px; }
.footer-contact a,
.footer-contact > span {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.55);
}
.footer-contact a:hover { color: #fff; }
.footer-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 9.5px !important;
  letter-spacing: 0.12em;
  color: rgba(169, 235, 190, 0.72) !important;
}
.footer-status i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px rgba(78, 209, 126, 0.6);
}
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 54px;
  padding: 20px 0 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  font-size: 11px;
  color: rgba(255, 255, 255, 0.48);
}

/* ---------- toast ---------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  z-index: 200;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 999px;
  background: #f5f6f8;
  color: #0a0a0a;
  font-size: 13px;
  font-weight: 500;
  box-shadow: 0 12px 44px rgba(0, 0, 0, 0.5);
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 16px);
  transition: opacity 0.25s ease, transform 0.3s var(--ease);
}
.toast svg { width: 14px; height: 14px; }
.toast.is-show { opacity: 1; transform: translate(-50%, 0); }

/* ---------- reveal ---------- */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  filter: blur(7px);
  transition:
    opacity 0.85s var(--ease),
    transform 0.85s var(--ease),
    filter 0.85s var(--ease);
  transition-delay: var(--delay, 0s);
}
.js [data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
}

/* ---------- responsive ---------- */
@media (max-width: 1080px) {
  .desktop-nav { gap: 22px; }
  .console-side { width: 196px; }
  .c-date { display: none; }
  .value-card-wide:not(.value-card-bottom) {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    min-height: 0;
  }
  .value-card-wide:not(.value-card-bottom) .tiles {
    justify-content: flex-start;
    max-width: none;
    margin-top: 26px;
  }
}

@media (max-width: 900px) {
  .desktop-nav { display: none; }
  .menu-toggle { display: flex; }
  .header-inner { height: 68px; }
  .site-header.is-scrolled { background: rgba(10, 10, 10, 0.94); }
  .hero { padding-top: 132px; }
  .hero-facts { margin-top: 60px; }
  .section { padding: 104px 0; }
  .meaning-grid { grid-template-columns: 1fr; }
  .meaning-card { min-height: 360px; }
  .meaning-word { margin: 24px 0 18px; }
  .case-grid { grid-template-columns: repeat(2, 1fr); }
  .file-panel { grid-template-columns: 1fr; }
  .file-main { border-right: 0; border-bottom: 1px solid rgba(255, 255, 255, 0.08); }
  .file-specs { padding: 30px 36px 36px; }
  .process-grid { grid-template-columns: repeat(2, 1fr); gap: 38px 28px; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: span 2; }
}

@media (max-width: 800px) {
  .contact-cards { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  .container { width: calc(100% - 40px); }
  .header-cta { display: none; }
  .hero { padding-top: 120px; }
  .hero-brand { font-size: clamp(46px, 12.5vw, 66px); }
  .hero-tagline { font-size: 22px; margin-top: 16px; }
  .hero-desc { font-size: 14.5px; line-height: 1.8; }
  .hero-desc br { display: none; }
  .hero-cta { flex-direction: column; width: 100%; max-width: 300px; }
  .hero-cta .btn { width: 100%; }
  .hero-status { gap: 8px 18px; font-size: 9.5px; }
  .hero-status span + span::before { display: none; }
  .preview-wrap { margin-top: 48px; }
  .preview-bar { padding: 0 12px; gap: 10px; }
  .preview-url { font-size: 9.5px; padding: 0 9px; }
  .preview-url .url-path { display: none; }
  .console-side { display: none; }
  .console { min-height: 0; }
  .console-main { padding: 16px; }
  .c-top h4 { font-size: 14px; }
  .c-actions { display: none; }
  .c-stats { gap: 6px; }
  .c-stat { padding: 9px; }
  .c-stat-row strong { font-size: 17px; }
  .c-trend { display: none; }
  .c-bars { gap: 2px; height: 20px; }
  .c-grid { grid-template-columns: 1fr; }
  .c-chart { display: none; }
  .c-side { min-height: 212px; }
  .c-activity { display: none; }
  .preview-caption { font-size: 10px; }
  .preview-caption .mono { display: none; }
  .hero-facts {
    grid-template-columns: repeat(2, 1fr);
    gap: 0;
    margin-top: 48px;
    padding: 0;
  }
  .fact {
    padding: 18px 10px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  }
  .fact:nth-child(1),
  .fact:nth-child(3) { border-right: 1px solid rgba(255, 255, 255, 0.06); }
  .fact:nth-child(3),
  .fact:nth-child(4) { border-bottom: 0; }
  .fact + .fact::before { display: none; }
  .fact strong { font-size: 24px; }
  .fact:last-child strong { font-size: 18px; }
  .section { padding: 88px 0; }
  .section-head { margin-bottom: 40px; }
  .section-head h2 { font-size: 29px; }
  .section-head p { font-size: 14.5px; }
  .meaning-card { min-height: 0; padding: 26px; }
  .meaning-word { font-size: clamp(76px, 22vw, 104px); }
  .meaning-card h3 { font-size: 21px; }
  .equation { gap: 10px; padding: 18px; border-radius: 14px; justify-content: flex-start; }
  .equation-note { width: 100%; margin-left: 0; }
  .value-grid { grid-template-columns: 1fr; gap: 14px; }
  .value-card-wide { grid-column: span 1; }
  .value-card { min-height: 0; padding: 26px; }
  .value-card:not(.value-card-wide) .value-big,
  .value-card:not(.value-card-wide) .keyword-pair { margin-top: 0; padding-top: 0; }
  .value-card-bottom { flex-direction: column; align-items: flex-start; gap: 26px; }
  .scenario-chips { justify-content: flex-start; }
  .value-big { font-size: 52px; }
  .tiles span { width: 33px; height: 39px; }
  .case-grid { grid-template-columns: 1fr; gap: 12px; }
  .case-card { min-height: 0; padding: 22px; }
  .file-panel { border-radius: 22px; }
  .file-main { padding: 28px 24px; }
  .file-domain { font-size: 38px; }
  .extension-list { grid-template-columns: 1fr; }
  .file-specs { padding: 22px 24px 28px; }
  .spec-row { padding: 12px 0; gap: 14px; }
  .spec-row > span { font-size: 11px; }
  .spec-row strong { font-size: 12.5px; }
  .spec-cta { padding-top: 20px; }
  .section-process { padding-top: 20px; }
  .process-grid { gap: 30px 20px; }
  .process-step { padding-right: 0; }
  .process-note { border-radius: 14px; align-items: flex-start; font-size: 10.5px; padding: 12px 14px; }
  .section-contact { padding-top: 40px; padding-bottom: 90px; }
  .contact-panel { padding: 56px 20px 40px; border-radius: 24px; }
  .contact-panel h2 { font-size: 29px; }
  .contact-desc { font-size: 14px; }
  .contact-cards { grid-template-columns: 1fr; margin-top: 30px; }
  .contact-card { padding: 15px 16px; }
  .contact-text strong { font-size: 17px; }
  .footer-inner { grid-template-columns: 1fr; gap: 34px; }
  .footer-brand { grid-column: span 1; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 8px; margin-top: 40px; }
  .toast { bottom: 20px; }
}

@media (max-width: 420px) {
  .hero-brand { font-size: 45px; }
  .tiles { gap: 4px; }
  .tiles span { width: 28px; height: 34px; font-size: 13px; }
  .tiles .tile-gap { width: 6px; }
  .tiles em { margin-left: 4px; }
  .c-stats { grid-template-columns: 1fr 1fr; }
  .c-stat:last-child { display: none; }
  .c-side { min-height: 0; }
  .footer-nav { display: grid; grid-template-columns: 1fr 1fr; }
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .js [data-reveal] { opacity: 1; transform: none; filter: none; }
  .hero-copy > *, .preview-wrap { opacity: 1; transform: none; filter: none; }
}