/* ============================================================
   FilterPro.cn — domain sale landing page
   Design: industrial editorial / filtration membrane
   No external fonts, no framework, no cookies.
   ============================================================ */

:root {
  --ink: #07101d;
  --ink-2: #0c1828;
  --ink-3: #142338;
  --ink-4: #1d3049;
  --paper: #f4f1ea;
  --paper-2: #ebe6db;
  --white: #ffffff;
  --teal: #1fb6a6;
  --teal-bright: #57dccb;
  --teal-dark: #0d7c72;
  --amber: #e0aa58;
  --text: #17212c;
  --muted: #5b6876;
  --muted-light: #9fb0c3;
  --line: #d8d2c5;
  --line-dark: rgba(255, 255, 255, 0.12);
  --font-sans: "Inter", "Noto Sans SC", "PingFang SC", "Microsoft YaHei",
    system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-serif: "Noto Serif SC", "Songti SC", "STSong", "SimSun", Georgia,
    "Times New Roman", serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Consolas, "Liberation Mono",
    monospace;
  --shadow-sm: 0 1px 2px rgba(7, 16, 29, 0.06), 0 8px 24px rgba(7, 16, 29, 0.05);
  --shadow-md: 0 2px 4px rgba(7, 16, 29, 0.05), 0 24px 60px rgba(7, 16, 29, 0.1);
  --radius: 18px;
  --radius-sm: 10px;
  --wrap: 1180px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
  /* 固定导航高 76px，锚点跳转时留出呼吸空间，避免标题被盖住 */
  scroll-padding-top: 92px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  /* 语言提示条以 absolute 定位挂在此上下文下 */
  position: relative;
  background: var(--paper);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.menu-open {
  overflow: hidden;
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

button,
input,
select,
textarea {
  font: inherit;
}

h1,
h2,
h3,
h4,
p,
ul,
ol,
dl,
figure,
blockquote {
  margin: 0;
}

ul,
ol {
  padding: 0;
  list-style: none;
}

::selection {
  background: var(--teal);
  color: var(--ink);
}

:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -80px;
  z-index: 200;
  background: var(--white);
  color: var(--ink);
  padding: 10px 16px;
  border-radius: 8px;
  font-weight: 700;
  transition: top 0.2s;
}

.skip-link:focus {
  top: 16px;
}

.wrap {
  width: min(var(--wrap), calc(100% - 48px));
  margin-inline: auto;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--teal-dark);
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: currentColor;
  opacity: 0.6;
}

.eyebrow--light {
  color: var(--teal-bright);
}

.section {
  padding: 108px 0;
  position: relative;
}

.section--paper {
  background: var(--paper);
}

.section--white {
  background: var(--white);
}

.section--dark {
  background: var(--ink);
  color: #eef3f7;
}

.section-head {
  max-width: 760px;
  margin-bottom: 56px;
}

.section-head h2 {
  margin-top: 18px;
  font-family: var(--font-serif);
  font-size: clamp(30px, 4vw, 46px);
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: -0.01em;
}

.section-head p {
  margin-top: 18px;
  color: var(--muted);
  font-size: 17px;
  max-width: 660px;
}

.section--dark .section-head p {
  color: var(--muted-light);
}

.section-head--center {
  margin-inline: auto;
  text-align: center;
}

.section-head--center .eyebrow {
  justify-content: center;
}

.section-head--center p {
  margin-inline: auto;
}

/* ---------- header ---------- */

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  color: #eef3f7;
  transition: background 0.35s var(--ease), box-shadow 0.35s var(--ease),
    color 0.35s var(--ease);
}

.site-header::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 1px;
  background: rgba(255, 255, 255, 0.1);
  opacity: 0;
  transition: opacity 0.35s;
}

.site-header.is-scrolled {
  background: rgba(7, 16, 29, 0.9);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.18);
}

.site-header.is-scrolled::after {
  opacity: 1;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 76px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: -0.02em;
  font-size: 19px;
}

.brand-mark {
  width: 30px;
  height: 30px;
  flex: none;
}

.brand small {
  display: block;
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.55;
  line-height: 1.2;
  margin-top: 2px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 30px;
}

.nav a {
  font-size: 13.5px;
  text-decoration: none;
  opacity: 0.76;
  transition: opacity 0.2s;
}

.nav a:hover {
  opacity: 1;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-decoration: none;
  opacity: 0.7;
  padding: 8px 10px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  transition: opacity 0.2s, border-color 0.2s;
}

.lang-switch:hover {
  opacity: 1;
  border-color: rgba(255, 255, 255, 0.4);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 13px 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.2s var(--ease), background 0.2s, color 0.2s,
    border-color 0.2s, box-shadow 0.2s;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn--primary {
  background: var(--teal);
  color: var(--ink);
  box-shadow: 0 10px 28px rgba(31, 182, 166, 0.24);
}

.btn--primary:hover {
  background: var(--teal-bright);
}

.btn--outline {
  border-color: rgba(255, 255, 255, 0.26);
  color: #eef3f7;
  background: transparent;
}

.btn--outline:hover {
  border-color: rgba(255, 255, 255, 0.55);
  background: rgba(255, 255, 255, 0.04);
}

.btn--dark {
  background: var(--ink);
  color: #fff;
}

.btn--dark:hover {
  background: var(--ink-3);
}

.btn--ghost {
  border-color: var(--line);
  color: var(--text);
  background: transparent;
}

.btn--ghost:hover {
  border-color: var(--text);
}

.btn--sm {
  padding: 10px 16px;
  font-size: 12.5px;
}

.btn .arrow {
  transition: transform 0.2s var(--ease);
}

.btn:hover .arrow {
  transform: translateX(3px);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 999px;
  background: transparent;
  color: inherit;
  cursor: pointer;
  position: relative;
}

.nav-toggle span {
  position: absolute;
  left: 12px;
  width: 18px;
  height: 1.5px;
  background: currentColor;
  transition: transform 0.25s, top 0.25s, opacity 0.25s;
}

.nav-toggle span:nth-child(1) {
  top: 15px;
}

.nav-toggle span:nth-child(2) {
  top: 20px;
}

.nav-toggle span:nth-child(3) {
  top: 25px;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  top: 20px;
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  top: 20px;
  transform: rotate(-45deg);
}

/* ---------- hero ---------- */

.hero {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: #eef3f7;
  padding: 156px 0 92px;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 76px 76px;
  mask-image: radial-gradient(ellipse 80% 65% at 50% 25%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 80% 65% at 50% 25%, #000 20%, transparent 78%);
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  width: 760px;
  height: 760px;
  right: -220px;
  top: -280px;
  background: radial-gradient(circle, rgba(31, 182, 166, 0.2), transparent 65%);
  pointer-events: none;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(380px, 0.92fr);
  align-items: center;
  gap: 56px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 13px 7px 9px;
  border: 1px solid rgba(87, 220, 203, 0.32);
  border-radius: 999px;
  background: rgba(31, 182, 166, 0.08);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--teal-bright);
}

.hero-badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal-bright);
  box-shadow: 0 0 0 4px rgba(87, 220, 203, 0.13);
  animation: pulse 2.8s infinite;
}

@keyframes pulse {
  0%,
  100% {
    box-shadow: 0 0 0 4px rgba(87, 220, 203, 0.13);
  }
  50% {
    box-shadow: 0 0 0 8px rgba(87, 220, 203, 0.04);
  }
}

.hero h1 {
  margin-top: 28px;
  font-family: var(--font-serif);
  font-size: clamp(40px, 5.2vw, 62px);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.035em;
}

.hero h1 .line {
  display: block;
  white-space: nowrap;
}

.hero h1 .accent {
  color: var(--teal-bright);
  font-style: italic;
  font-weight: 600;
}

.hero h1 .domain {
  display: block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: clamp(32px, 4.2vw, 50px);
  font-weight: 500;
  letter-spacing: -0.045em;
  color: #fff;
}

.hero h1 .domain .tld {
  color: var(--teal-bright);
}

.hero-lead {
  margin-top: 26px;
  max-width: 600px;
  color: #b9c6d4;
  font-size: 17px;
  line-height: 1.85;
}

.hero-lead strong {
  color: #fff;
  font-weight: 600;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.hero-facts {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin-top: 46px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 24px;
}

.hero-fact {
  padding-right: 12px;
  margin-right: 12px;
  border-right: 1px solid rgba(255, 255, 255, 0.12);
}

.hero-fact:last-child {
  border-right: 0;
  margin-right: 0;
  padding-right: 0;
}

.hero-fact dt {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #7f92a7;
}

.hero-fact dd {
  margin-top: 5px;
  font-size: 13px;
  font-weight: 600;
  color: #e7edf3;
  white-space: nowrap;
}

.hero-visual {
  position: relative;
}

.hero-visual svg {
  width: 100%;
  height: auto;
  filter: drop-shadow(0 30px 60px rgba(0, 0, 0, 0.28));
}

.domain-card {
  position: absolute;
  left: -10px;
  bottom: -6px;
  width: min(306px, 82%);
  padding: 17px 20px 16px;
  border-radius: 14px;
  background: rgba(9, 20, 35, 0.84);
  border: 1px solid rgba(87, 220, 203, 0.28);
  box-shadow: 0 22px 50px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.dc-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #7f92a7;
}

.domain-card strong {
  display: block;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 27px;
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 1.1;
  color: #fff;
}

.domain-card strong span {
  color: var(--teal-bright);
}

.dc-meta {
  display: block;
  margin-top: 7px;
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.1em;
  color: #8fa2b6;
}

/* svg animation */
.flow-dash {
  stroke-dasharray: 4 10;
  animation: flow 8s linear infinite;
}

@keyframes flow {
  to {
    stroke-dashoffset: -140;
  }
}

.particle {
  animation: float 7s ease-in-out infinite;
}

.particle:nth-child(2n) {
  animation-delay: -2s;
}

.particle:nth-child(3n) {
  animation-delay: -4s;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
    opacity: 0.65;
  }
  50% {
    transform: translateY(-7px);
    opacity: 1;
  }
}

/* ---------- ticker ---------- */

.ticker {
  background: var(--ink-2);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  color: #8fa2b6;
  overflow: hidden;
}

.ticker-inner {
  display: flex;
  align-items: center;
  gap: 34px;
  min-height: 58px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  white-space: nowrap;
}

.ticker-inner span {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.ticker-inner span::before {
  content: "";
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--teal);
}

.ticker .strong {
  color: #dfe8f0;
}

/* ---------- value cards ---------- */

.value-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.value-card {
  position: relative;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 26px 28px;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease),
    border-color 0.3s;
}

.value-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-sm);
  border-color: #c6bfb0;
}

.value-card .num {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--teal-dark);
}

.value-card h3 {
  margin-top: 38px;
  font-size: 19px;
  line-height: 1.4;
  letter-spacing: -0.01em;
}

.value-card p {
  margin-top: 12px;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.75;
}

.value-card .icon {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 34px;
  height: 34px;
  color: var(--teal-dark);
  opacity: 0.85;
}

.value-card::after {
  content: "";
  position: absolute;
  left: 26px;
  right: 26px;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--teal), transparent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--ease);
}

.value-card:hover::after {
  transform: scaleX(1);
}

/* ---------- market ---------- */

.market-grid {
  display: grid;
  grid-template-columns: 1.35fr 0.85fr;
  gap: 28px;
  align-items: stretch;
}

.chart-card {
  background: linear-gradient(180deg, #102033, #0b1726);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  padding: 30px 30px 18px;
  overflow: hidden;
}

.chart-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 8px;
}

.chart-head h3 {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.chart-head p {
  font-size: 11.5px;
  color: #8498ad;
  margin-top: 4px;
}

.cagr {
  flex: none;
  text-align: right;
  font-family: var(--font-mono);
}

.cagr b {
  display: block;
  font-size: 23px;
  color: var(--teal-bright);
  font-weight: 500;
  letter-spacing: -0.03em;
}

.cagr span {
  font-size: 9px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #7f92a7;
}

.chart-svg {
  width: 100%;
  height: auto;
  margin-top: 6px;
}

.chart-source {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  margin-top: 10px;
  padding-top: 12px;
  font-size: 10px;
  color: #6f8398;
}

.market-side {
  display: grid;
  grid-template-rows: repeat(3, 1fr);
  gap: 14px;
}

.stat-card {
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  padding: 22px 24px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.stat-card .label {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #7f92a7;
}

.stat-card .value {
  margin-top: 8px;
  font-family: var(--font-serif);
  font-size: 31px;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: #fff;
}

.stat-card .value small {
  font-family: var(--font-sans);
  font-size: 12px;
  color: #9fb0c3;
  letter-spacing: 0;
  font-weight: 400;
  margin-left: 4px;
}

.stat-card .sub {
  margin-top: 6px;
  font-size: 11.5px;
  color: #8fa2b6;
  line-height: 1.5;
}

.stat-card--accent {
  background: linear-gradient(135deg, rgba(31, 182, 166, 0.18), rgba(31, 182, 166, 0.05));
  border-color: rgba(87, 220, 203, 0.26);
}

.market-note {
  margin-top: 22px;
  font-size: 11.5px;
  line-height: 1.7;
  color: #7f92a7;
  max-width: 900px;
}

.market-note b {
  color: #a8b8c8;
  font-weight: 600;
}

/* ---------- use cases ---------- */

.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.case {
  position: relative;
  padding: 34px 32px 36px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--white);
  transition: background 0.3s;
}

.case:hover {
  background: #fbfaf7;
}

.case .icon {
  width: 32px;
  height: 32px;
  color: var(--teal-dark);
}

.case h3 {
  margin-top: 22px;
  font-size: 17px;
  line-height: 1.45;
}

.case p {
  margin-top: 9px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
}

.case .tag {
  display: inline-block;
  margin-top: 18px;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal-dark);
  border: 1px solid rgba(13, 124, 114, 0.25);
  border-radius: 999px;
  padding: 4px 9px;
}

/* ---------- disclosure ---------- */

.disclosure {
  background: var(--paper);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.disclosure-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 64px;
  align-items: start;
}

.disclosure-mark {
  position: sticky;
  top: 110px;
}

.disclosure-mark .big {
  font-family: var(--font-serif);
  font-size: clamp(60px, 9vw, 112px);
  line-height: 0.9;
  color: var(--amber);
  opacity: 0.9;
}

.disclosure-mark h2 {
  margin-top: 22px;
  font-family: var(--font-serif);
  font-size: 32px;
  line-height: 1.25;
}

.disclosure-mark p {
  margin-top: 16px;
  font-size: 13.5px;
  color: var(--muted);
  max-width: 380px;
}

.disclosure-body {
  padding-top: 10px;
}

.disclosure-body > p {
  font-size: 15.5px;
  line-height: 1.9;
  color: #3a4654;
}

.disclosure-body > p + p {
  margin-top: 18px;
}

.disclosure-body strong {
  color: var(--text);
}

.entity-list {
  margin-top: 30px;
  border-top: 1px solid var(--line);
}

.entity {
  display: grid;
  grid-template-columns: 46px 1fr auto;
  gap: 16px;
  align-items: baseline;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.entity .idx {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--muted);
}

.entity .name {
  font-weight: 600;
  font-size: 14.5px;
}

.entity .desc {
  font-size: 12.5px;
  color: var(--muted);
  margin-top: 2px;
}

.entity .region {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
}

.disclosure-foot {
  margin-top: 26px;
  padding: 18px 20px;
  border-left: 3px solid var(--amber);
  background: rgba(224, 170, 88, 0.1);
  font-size: 12.5px;
  line-height: 1.75;
  color: #5b4a30;
}

/* ---------- facts ---------- */

.facts-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 64px;
  align-items: start;
}

.facts-intro h2 {
  margin-top: 18px;
  font-family: var(--font-serif);
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.22;
}

.facts-intro p {
  margin-top: 18px;
  color: var(--muted);
  font-size: 15px;
}

.verify {
  margin-top: 28px;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 12px;
  color: var(--muted);
}

.verify .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--teal);
}

.facts-table {
  width: 100%;
  border-collapse: collapse;
  border-top: 2px solid var(--ink);
}

.facts-table th,
.facts-table td {
  text-align: left;
  padding: 15px 6px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  font-size: 13.5px;
}

.facts-table th {
  width: 148px;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
  padding-top: 18px;
}

.facts-table td {
  font-weight: 500;
}

.facts-table td .muted {
  display: block;
  font-weight: 400;
  color: var(--muted);
  font-size: 11.5px;
  margin-top: 2px;
}

.facts-table code {
  font-family: var(--font-mono);
  font-size: 12px;
  background: var(--paper);
  padding: 2px 6px;
  border-radius: 4px;
}

/* ---------- process ---------- */

.process {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  counter-reset: step;
  margin-top: 10px;
}

.step {
  position: relative;
  padding: 30px 22px 26px;
  border-top: 1px solid var(--line);
}

.step::before {
  content: "";
  position: absolute;
  top: -4px;
  left: 22px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--teal);
}

.step .n {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.12em;
  color: var(--teal-dark);
}

.step h3 {
  margin-top: 16px;
  font-size: 15px;
}

.step p {
  margin-top: 8px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--muted);
}

.step .time {
  display: block;
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 9.5px;
  color: var(--muted);
}

.price-panel {
  margin-top: 48px;
  background: var(--ink);
  color: #fff;
  border-radius: var(--radius);
  padding: 34px 38px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  flex-wrap: wrap;
  position: relative;
  overflow: hidden;
}

.price-panel::after {
  content: "";
  position: absolute;
  right: -80px;
  top: -100px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(31, 182, 166, 0.2), transparent 65%);
}

.price-panel .label {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #8fa2b6;
}

.price-panel .amount {
  margin-top: 6px;
  font-family: var(--font-serif);
  font-size: 38px;
  line-height: 1;
  letter-spacing: -0.02em;
}

.price-panel .amount small {
  font-family: var(--font-sans);
  font-size: 12px;
  color: #9fb0c3;
  margin-left: 8px;
  letter-spacing: 0;
}

.price-panel .terms {
  margin-top: 8px;
  font-size: 11.5px;
  color: #8fa2b6;
}

.price-panel .actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

/* ---------- faq ---------- */

.faq-grid {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 64px;
  align-items: start;
}

.faq-list {
  border-top: 1px solid var(--line);
}

.faq-item {
  border-bottom: 1px solid var(--line);
}

.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 21px 0;
  background: none;
  border: 0;
  text-align: left;
  color: var(--text);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
}

.faq-q .plus {
  flex: none;
  width: 22px;
  height: 22px;
  position: relative;
  border: 1px solid var(--line);
  border-radius: 50%;
  transition: background 0.25s, border-color 0.25s, transform 0.3s;
}

.faq-q .plus::before,
.faq-q .plus::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 9px;
  height: 1px;
  background: var(--text);
  transform: translate(-50%, -50%);
  transition: transform 0.3s;
}

.faq-q .plus::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.faq-q[aria-expanded="true"] .plus {
  background: var(--teal);
  border-color: var(--teal);
  transform: rotate(180deg);
}

.faq-q[aria-expanded="true"] .plus::after {
  transform: translate(-50%, -50%) rotate(0);
}

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s var(--ease);
}

.faq-a-inner {
  padding: 0 44px 24px 0;
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.8;
}

.faq-a-inner a {
  color: var(--teal-dark);
}

/* ---------- contact ---------- */

.contact {
  background: var(--ink);
  color: #eef3f7;
  position: relative;
  overflow: hidden;
}

.contact::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 70% 80% at 70% 50%, #000, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 70% 80% at 70% 50%, #000, transparent 75%);
}

.contact-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 70px;
  align-items: start;
}

.contact-copy h2 {
  margin-top: 18px;
  font-family: var(--font-serif);
  font-size: clamp(32px, 4vw, 48px);
  line-height: 1.18;
  letter-spacing: -0.02em;
}

.contact-copy p {
  margin-top: 20px;
  color: #a9b8c8;
  font-size: 15px;
  max-width: 430px;
}

.contact-direct {
  margin-top: 34px;
  display: grid;
  gap: 14px;
}

.contact-line {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13.5px;
  color: #c8d4df;
}

.contact-line svg {
  width: 17px;
  height: 17px;
  color: var(--teal-bright);
  flex: none;
}

.contact-line a {
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.contact-line a:hover {
  border-color: var(--teal-bright);
}

.copy-btn {
  margin-left: auto;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: transparent;
  color: #9fb0c3;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  padding: 4px 8px;
  border-radius: 4px;
  cursor: pointer;
}

.copy-btn:hover {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.4);
}

.contact-meta {
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  flex-wrap: wrap;
  gap: 18px 28px;
  font-size: 11px;
  color: #7f92a7;
}

.contact-meta b {
  display: block;
  color: #c8d4df;
  font-weight: 500;
  font-size: 12px;
  margin-top: 2px;
}

.form-card {
  background: #fff;
  color: var(--text);
  border-radius: var(--radius);
  padding: 34px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.25);
}

.form-card h3 {
  font-size: 18px;
  letter-spacing: -0.01em;
}

.form-card .hint {
  margin-top: 6px;
  font-size: 12px;
  color: var(--muted);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 24px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field--full {
  grid-column: 1 / -1;
}

.field label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #6b7785;
}

/* 字段下方的常驻提示：把「最少几个字」写在填之前，而不是提交后才报错 */
.field-note {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin: 6px 2px 0;
  font-size: 12px;
  line-height: 1.5;
  color: var(--muted);
}

.field-note__hint {
  transition: color 0.2s;
}

.field-note__count {
  font-family: var(--font-mono);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  opacity: 0.7;
  transition: color 0.2s, opacity 0.2s;
}

.field-note.is-short .field-note__hint,
.field-note.is-short .field-note__count {
  color: #b45309;
  opacity: 1;
}

.field-note.is-ok .field-note__count {
  color: var(--teal-dark);
  opacity: 1;
}

/* 验证码加载失败时的兜底提示：宁可难看，也不能静默 */
.turnstile-fallback {
  margin: 10px 0 0;
  padding: 10px 12px;
  border: 1px solid #f0c36d;
  border-left: 3px solid #d97706;
  border-radius: 6px;
  background: #fffaf0;
  color: #92400e;
  font-size: 12.5px;
  line-height: 1.55;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfaf7;
  padding: 11px 12px;
  font-size: 13.5px;
  color: var(--text);
  transition: border-color 0.2s, background 0.2s;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--teal);
  background: #fff;
  outline: none;
}

.field textarea {
  resize: vertical;
  min-height: 96px;
}

.form-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: 20px;
  flex-wrap: wrap;
}

.form-foot .privacy {
  font-size: 10.5px;
  color: var(--muted);
  max-width: 280px;
  line-height: 1.6;
}

.form-status {
  margin-top: 12px;
  font-size: 12px;
  color: var(--teal-dark);
  min-height: 18px;
}

/* ---------- footer ---------- */

.site-footer {
  background: #050c16;
  color: #7f92a7;
  padding: 56px 0 34px;
  font-size: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
  padding-bottom: 34px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand {
  max-width: 380px;
}

.footer-brand .brand {
  color: #fff;
}

.footer-brand p {
  margin-top: 14px;
  line-height: 1.75;
  color: #7f92a7;
}

.footer-cols {
  display: flex;
  gap: 64px;
  flex-wrap: wrap;
}

.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #7a8da1;
  margin-bottom: 12px;
}

.footer-col a,
.footer-col span {
  display: block;
  color: #9fb0c3;
  text-decoration: none;
  margin-top: 7px;
}

.footer-col a:hover {
  color: var(--teal-bright);
}

.footer-bottom {
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  font-size: 10.5px;
  line-height: 1.7;
}

.footer-bottom .legal {
  max-width: 740px;
  color: #7a8da1;
}

/* ---------- reveal ---------- */

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- responsive ---------- */

@media (max-width: 1080px) {
  .value-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 44px;
  }

  .hero-visual {
    max-width: 520px;
  }

  .market-grid {
    grid-template-columns: 1fr;
  }

  .market-side {
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: none;
  }

  .disclosure-grid,
  .facts-grid,
  .faq-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 44px;
  }

  .disclosure-mark {
    position: static;
  }

  .process {
    grid-template-columns: repeat(2, 1fr);
  }

  .step:last-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 820px) {
  html {
    /* 移动端导航高 66px */
    scroll-padding-top: 82px;
  }

  .wrap {
    width: min(var(--wrap), calc(100% - 36px));
  }

  .section {
    padding: 76px 0;
  }

  .header-inner {
    height: 66px;
  }

  .nav {
    position: fixed;
    inset: 66px 0 auto;
    background: rgba(7, 16, 29, 0.98);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 12px 18px 26px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transform: translateY(-120%);
    transition: transform 0.35s var(--ease);
    max-height: calc(100vh - 66px);
    overflow-y: auto;
  }

  .nav.is-open {
    transform: none;
  }

  .nav a {
    width: 100%;
    padding: 14px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    font-size: 15px;
  }

  .nav-toggle {
    display: block;
  }

  .header-actions .btn {
    display: none;
  }

  .hero {
    padding: 124px 0 70px;
  }

  .hero-fact {
    padding-right: 18px;
    margin-right: 18px;
  }

  .value-grid,
  .case-grid {
    grid-template-columns: 1fr;
  }

  .case-grid {
    border-left: 0;
  }

  .case {
    border-left: 1px solid var(--line);
  }

  .market-side {
    grid-template-columns: 1fr;
  }

  .process {
    grid-template-columns: 1fr;
  }

  .step:last-child {
    grid-column: auto;
  }

  .price-panel {
    padding: 28px;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .form-card {
    padding: 26px 22px;
  }

  .contact-grid {
    gap: 40px;
  }

  .footer-cols {
    gap: 34px;
  }
}

@media (max-width: 520px) {
  .hero h1 {
    font-size: 34px;
  }

  .hero h1 .line {
    white-space: normal;
  }

  .hero h1 .domain {
    font-size: 30px;
  }

  .hero-lead {
    font-size: 15px;
  }

  .hero-ctas {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-ctas .btn {
    width: 100%;
  }

  .hero-facts {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .hero-fact {
    padding: 0;
    margin: 0;
    border: 0;
  }

  .section-head {
    margin-bottom: 38px;
  }

  .section-head h2 {
    font-size: 29px;
  }

  .stat-card .value {
    font-size: 26px;
  }

  .entity {
    grid-template-columns: 30px 1fr;
  }

  .entity .region {
    grid-column: 2;
  }

  .price-panel .amount {
    font-size: 32px;
  }

  .footer-top {
    flex-direction: column;
  }
}

@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;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ---------- print ---------- */

@media print {
  .site-header,
  .lang-hint,
  .nav-toggle,
  .hero-ctas,
  .ticker,
  .contact,
  .site-footer,
  .price-panel .actions {
    display: none !important;
  }

  body {
    background: #fff;
  }

  .section {
    padding: 32px 0;
    break-inside: avoid;
  }

  .hero {
    padding: 30px 0;
    color: #000;
    background: #fff;
  }

  .hero h1,
  .hero h1 .domain,
  .hero h1 .accent {
    color: #000;
  }

  .hero-lead,
  .hero-fact dd {
    color: #333;
  }
}

/* ---------- 语言提示条（浏览器语言与本页不一致时显示） ---------- */

.lang-hint {
  /* 绝对定位落在 hero 顶部留白区：不遮挡内容、不跟随滚动、不压住固定导航 */
  position: absolute;
  top: 76px;
  left: 0;
  right: 0;
  z-index: 90;
  /* 高对比强调色：与深色 hero 拉开，确保一眼看到 */
  background: linear-gradient(90deg, #21c4b1 0%, #12a494 55%, #0b8378 100%);
  box-shadow: 0 10px 30px rgba(9, 150, 137, 0.32),
    inset 0 -1px 0 rgba(255, 255, 255, 0.18);
  color: #ffffff;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: 0.01em;
}

.lang-hint[hidden] {
  display: none;
}

.lang-hint__inner {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
}

.lang-hint__icon {
  flex: 0 0 auto;
  width: 21px;
  height: 21px;
  color: #ffffff;
  opacity: 0.95;
}

.lang-hint__text {
  flex: 1 1 auto;
  min-width: 0;
  text-shadow: 0 1px 2px rgba(0, 60, 54, 0.18);
}

.lang-hint__go {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 999px;
  background: #ffffff;
  color: #0a6d64;
  font-weight: 700;
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
  box-shadow: 0 2px 8px rgba(0, 40, 36, 0.18);
  transition: transform 0.18s var(--ease), box-shadow 0.18s var(--ease),
    background 0.18s var(--ease);
}

.lang-hint__go:hover {
  background: #ffffff;
  color: #064e47;
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(0, 40, 36, 0.26);
}

.lang-hint__close {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  margin-left: 2px;
  padding: 0;
  border: 0;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.16);
  color: #ffffff;
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
}

.lang-hint__close:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: scale(1.06);
}

@media (max-width: 820px) {
  .lang-hint {
    top: 66px;
    font-size: 13.5px;
  }
  .lang-hint__inner {
    gap: 9px;
    padding: 9px 0;
  }
  .lang-hint__icon {
    width: 18px;
    height: 18px;
  }
  .lang-hint__go {
    padding: 6px 12px;
    font-size: 13px;
  }
  .lang-hint__close {
    width: 26px;
    height: 26px;
    font-size: 13px;
  }
}

/* ---------- 表单：蜜罐字段与人机验证 ---------- */

/* 蜜罐：真人看不见、也不会 tab 到；机器人会填 */
.hp-input {
  position: absolute !important;
  left: -9999px !important;
  top: auto !important;
  width: 1px !important;
  height: 1px !important;
  opacity: 0;
  pointer-events: none;
}

.turnstile-slot {
  margin-top: 2px;
}

.turnstile-slot[hidden] {
  display: none !important;
}

.turnstile-box {
  min-height: 0;
}