:root {
  --ink: #03070c;
  --ink-soft: #07111b;
  --surface: #0a1520;
  --text: #ecf4fb;
  --muted: #95a6b7;
  --line: rgba(166, 194, 218, 0.22);
  --line-strong: rgba(180, 211, 236, 0.55);
  --ice: #9ccfff;
  --ice-bright: #d8edff;
  --shadow: rgba(0, 0, 0, 0.5);
  --display: "Avenir Next Condensed", "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  --body: "Avenir Next", "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --max: 1440px;
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: dark;
  scroll-behavior: smooth;
  background: var(--ink);
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  color: var(--text);
  background:
    radial-gradient(circle at 82% 12%, rgba(61, 112, 156, 0.12), transparent 24rem),
    linear-gradient(180deg, #02060a 0%, var(--ink) 42%, #05101a 100%);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  font: inherit;
}

:focus-visible {
  outline: 2px solid var(--ice);
  outline-offset: 5px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 1rem;
  left: 1rem;
  padding: 0.7rem 1rem;
  color: var(--ink);
  background: var(--ice-bright);
  transform: translateY(-200%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: absolute;
  z-index: 20;
  top: 0;
  left: 50%;
  display: grid;
  width: min(calc(100% - 64px), var(--max));
  height: 84px;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  border-bottom: 1px solid var(--line);
  transform: translateX(-50%);
}

.wordmark,
.nav,
.header-cta {
  font-family: var(--display);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.17em;
  text-transform: uppercase;
}

.wordmark {
  display: inline-flex;
  gap: 0.8rem;
  align-items: center;
}

.wordmark-mark {
  display: inline-block;
  width: 23px;
  height: 23px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  box-shadow: inset -6px -2px 0 var(--ink), 0 0 20px rgba(156, 207, 255, 0.14);
}

.nav {
  display: flex;
  gap: clamp(1.5rem, 3vw, 3.5rem);
  color: var(--muted);
}

.nav a,
.header-cta {
  transition: color 180ms ease;
}

.nav a:hover,
.header-cta:hover {
  color: var(--ice-bright);
}

.header-cta {
  justify-self: end;
  color: var(--ice);
}

.hero {
  position: relative;
  display: grid;
  min-height: 920px;
  grid-template-columns: minmax(0, 0.94fr) minmax(460px, 1.06fr);
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.hero::before {
  position: absolute;
  z-index: 3;
  inset: 0;
  background: linear-gradient(90deg, rgba(2, 6, 10, 0.98) 0%, rgba(2, 6, 10, 0.86) 40%, transparent 66%);
  content: "";
  pointer-events: none;
}

.hero-copy {
  z-index: 5;
  width: min(690px, calc(100% - 64px));
  margin: 0 0 0 max(32px, calc((100vw - var(--max)) / 2));
  padding-top: 150px;
  align-self: center;
}

.hero h1 {
  margin: 0;
  color: transparent;
  background: linear-gradient(104deg, #f4f7fa 0%, #9babb8 41%, #f0f7fc 68%, #6d7a86 100%);
  background-clip: text;
  font-family: var(--display);
  font-size: clamp(6.5rem, 10.4vw, 11.2rem);
  font-stretch: condensed;
  font-weight: 700;
  letter-spacing: -0.055em;
  line-height: 0.76;
  text-shadow: 0 18px 80px rgba(140, 193, 233, 0.07);
  -webkit-background-clip: text;
}

.domain-pair {
  margin: 2rem 0 0;
  color: var(--ice);
  font-family: var(--display);
  font-size: clamp(1.35rem, 2vw, 2rem);
  font-weight: 500;
  letter-spacing: 0.01em;
}

.domain-pair span {
  margin: 0 0.35em;
  color: var(--muted);
}

.availability {
  position: relative;
  margin-top: 2.6rem;
  padding-top: 1.7rem;
}

.availability::before {
  position: absolute;
  top: 0;
  left: 0;
  width: 48px;
  height: 1px;
  background: var(--ice-bright);
  content: "";
}

.availability p,
.hero-intro p {
  margin: 0;
}

.availability p:first-child {
  font-family: var(--display);
  font-size: clamp(1.45rem, 2.2vw, 2.25rem);
  font-weight: 400;
  letter-spacing: 0.015em;
}

.availability p:last-child {
  margin-top: 0.1rem;
  color: var(--ice);
  font-size: clamp(1.12rem, 1.5vw, 1.4rem);
  letter-spacing: 0.13em;
}

.hero-intro {
  max-width: 600px;
  margin-top: 2.4rem;
}

.hero-intro p:first-child {
  color: #d4dde5;
  font-size: clamp(1rem, 1.15vw, 1.12rem);
  line-height: 1.75;
}

.hero-intro p:last-child {
  margin-top: 0.7rem;
  color: #a8d6ff;
  font-size: 0.98rem;
  letter-spacing: 0.08em;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  margin-top: 2.6rem;
}

.button {
  display: inline-flex;
  min-height: 54px;
  padding: 0.85rem 1.5rem;
  align-items: center;
  justify-content: center;
  gap: 2.7rem;
  border: 1px solid var(--line-strong);
  border-radius: 0;
  font-family: var(--display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  line-height: 1;
  text-transform: uppercase;
  cursor: pointer;
  transition: background-color 180ms ease, border-color 180ms ease, color 180ms ease, transform 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  border-color: var(--ice-bright);
  color: #02070c;
  background: linear-gradient(105deg, #e8f5ff, #94c2e9);
  box-shadow: 0 12px 35px rgba(117, 178, 227, 0.1);
}

.button-primary:hover {
  background: #fff;
}

.button-secondary {
  color: var(--ice);
  background: rgba(4, 11, 17, 0.54);
}

.button-secondary:hover {
  border-color: var(--ice);
  color: #fff;
  background: rgba(116, 176, 225, 0.08);
}

.hero-art {
  position: absolute;
  z-index: 1;
  top: 0;
  right: 0;
  width: 68%;
  height: 100%;
  overflow: hidden;
  background:
    radial-gradient(circle at 70% 35%, rgba(74, 136, 186, 0.15), transparent 28%),
    linear-gradient(180deg, #02070c, #08131f);
}

.stars {
  position: absolute;
  inset: 0;
  opacity: 0.72;
}

.stars-a {
  background-image:
    radial-gradient(circle, #fff 0 1px, transparent 1.4px),
    radial-gradient(circle, #9ccfff 0 1px, transparent 1.4px);
  background-position: 0 0, 36px 51px;
  background-size: 83px 89px, 121px 113px;
  mask-image: linear-gradient(90deg, transparent, #000 25%, #000);
}

.stars-b {
  background-image: radial-gradient(circle, rgba(255,255,255,.8) 0 0.7px, transparent 1px);
  background-position: 14px 19px;
  background-size: 47px 59px;
  opacity: 0.28;
}

.lunar-scene {
  position: absolute;
  right: -4%;
  bottom: -7%;
  width: min(920px, 100%);
  height: auto;
}

.scroll-cue {
  position: absolute;
  z-index: 6;
  bottom: 3.3rem;
  left: 50%;
  display: flex;
  align-items: center;
  flex-direction: column;
  color: var(--muted);
  font-size: 0.57rem;
  letter-spacing: 0.34em;
  transform: translateX(-50%);
}

.scroll-line {
  display: block;
  width: 1px;
  height: 38px;
  margin-top: 0.7rem;
  background: linear-gradient(var(--ice), transparent);
}

.section-shell {
  width: min(calc(100% - 64px), var(--max));
  margin: 0 auto;
  padding: clamp(6rem, 10vw, 10rem) 0;
}

.section-heading {
  display: flex;
  gap: 1.4rem;
  align-items: center;
  margin-bottom: 3.8rem;
  color: var(--ice);
  font-family: var(--display);
  font-size: 0.72rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}

.section-heading::after {
  width: 60px;
  height: 1px;
  background: var(--line-strong);
  content: "";
}

.section-heading p {
  margin: 0;
}

.section-heading p[lang] {
  color: var(--muted);
  font-size: 0.7rem;
}

.applications {
  position: relative;
}

.application-list {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: item;
}

.application-list li {
  position: relative;
  display: grid;
  min-height: 118px;
  grid-template-columns: 90px auto 28px auto 1fr;
  gap: clamp(0.6rem, 1.6vw, 1.6rem);
  align-items: center;
  border-bottom: 1px solid var(--line);
}

.application-list li:first-child {
  border-top: 1px solid var(--line);
}

.application-index {
  color: var(--ice);
  font-family: var(--display);
  font-size: 1.4rem;
  font-variant-numeric: tabular-nums;
}

.application-en,
.application-zh {
  font-family: var(--display);
  font-size: clamp(1.6rem, 3.1vw, 3rem);
  letter-spacing: 0.035em;
}

.application-zh {
  color: var(--ice);
  font-size: clamp(1.25rem, 2.1vw, 2rem);
  letter-spacing: 0.12em;
}

.application-separator {
  color: #5d6e7d;
  font-size: 1.5rem;
}

.application-line {
  height: 1px;
  margin-left: 2rem;
  background: linear-gradient(90deg, var(--line-strong), transparent);
  transition: background-color 180ms ease;
}

.application-list li::after {
  position: absolute;
  right: 0;
  color: var(--muted);
  content: "→";
  font-size: 1.6rem;
  transition: color 180ms ease, transform 180ms ease;
}

.application-list li:hover::after {
  color: var(--ice);
  transform: translateX(6px);
}

.domain-section {
  position: relative;
  width: 100%;
  max-width: none;
  padding-right: max(32px, calc((100vw - var(--max)) / 2));
  padding-left: max(32px, calc((100vw - var(--max)) / 2));
  overflow: hidden;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(8, 19, 29, 0.75), rgba(3, 8, 13, 0.9));
}

.domain-intro {
  display: grid;
  max-width: var(--max);
  grid-template-columns: 1fr 1fr;
  gap: 5vw;
  color: var(--muted);
}

.domain-intro > div:last-child {
  padding-left: 5vw;
  border-left: 1px solid var(--line);
  color: #9fc9ed;
}

.domain-intro p {
  margin: 0;
}

.domain-intro p + p {
  margin-top: 1.2rem;
}

.domain-lockup {
  position: relative;
  z-index: 2;
  display: grid;
  max-width: var(--max);
  margin-top: 6rem;
  grid-template-columns: 1fr 90px 1fr;
  align-items: center;
}

.domain-name {
  color: transparent;
  background: linear-gradient(110deg, #f4f7fa, #8799a8 47%, #eef7fe 75%, #71808d);
  background-clip: text;
  font-family: var(--display);
  font-size: clamp(3.2rem, 6.3vw, 6.7rem);
  font-weight: 600;
  letter-spacing: -0.055em;
  white-space: nowrap;
  -webkit-background-clip: text;
}

.domain-name:last-child {
  text-align: right;
}

.domain-name span {
  color: var(--ice);
  font-size: 0.56em;
  letter-spacing: -0.02em;
}

.domain-plus {
  color: var(--ice);
  font-family: var(--display);
  font-size: 2.5rem;
  text-align: center;
}

.domain-orbit {
  position: relative;
  z-index: 1;
  width: 100%;
  margin-top: 0.3rem;
  overflow: visible;
}

.domain-orbit path,
.domain-orbit circle {
  stroke: var(--ice);
  stroke-width: 1.5;
  vector-effect: non-scaling-stroke;
}

.domain-orbit circle {
  fill: var(--ink-soft);
}

.contact {
  padding-bottom: 5rem;
}

.contact-lead {
  margin: -1.7rem 0 2.2rem;
  color: var(--muted);
}

.contact-row {
  display: grid;
  min-height: 150px;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: center;
  border-top: 1px solid var(--line);
}

.contact-row:nth-of-type(3) {
  border-bottom: 1px solid var(--line);
}

.contact-type {
  display: flex;
  gap: 1.6rem;
  align-items: center;
}

.contact-icon {
  display: inline-grid;
  width: 58px;
  height: 58px;
  border: 1px solid var(--line-strong);
  place-items: center;
}

.contact-icon svg {
  width: 30px;
  fill: none;
  stroke: var(--ice);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.5;
}

.contact-type p,
.contact-type a,
.contact-type span {
  display: block;
  margin: 0;
}

.contact-type p {
  color: var(--ice);
  font-family: var(--display);
  font-size: 0.9rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.contact-type a,
.contact-type div > span {
  margin-top: 0.25rem;
  font-family: var(--display);
  font-size: clamp(1.35rem, 2.2vw, 2rem);
  letter-spacing: 0.05em;
}

.contact-type a:hover {
  color: var(--ice);
}

.contact-actions {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.button-small {
  min-width: 168px;
  min-height: 50px;
  gap: 0.6rem;
  font-size: 0.73rem;
}

.disclaimer {
  display: grid;
  margin-top: 3.3rem;
  grid-template-columns: 1fr 1fr;
  gap: 5vw;
  color: var(--muted);
  font-size: 0.85rem;
}

.disclaimer p {
  max-width: 620px;
  margin: 0;
}

.disclaimer p + p {
  padding-left: 5vw;
  border-left: 1px solid var(--line);
  color: #8fbde3;
}

.site-footer {
  display: flex;
  width: min(calc(100% - 64px), var(--max));
  min-height: 90px;
  margin: 0 auto;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--line);
  color: #758493;
  font-family: var(--display);
  font-size: 0.68rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.site-footer a {
  color: var(--ice);
}

.toast {
  position: fixed;
  z-index: 50;
  right: 1.5rem;
  bottom: 1.5rem;
  padding: 0.8rem 1rem;
  border: 1px solid var(--ice);
  color: var(--ice-bright);
  background: rgba(4, 12, 19, 0.96);
  box-shadow: 0 15px 50px var(--shadow);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: opacity 180ms ease, transform 180ms ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1050px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .nav {
    display: none;
  }

  .hero {
    min-height: 900px;
    grid-template-columns: 1fr;
  }

  .hero-copy {
    width: min(700px, calc(100% - 64px));
  }

  .hero-art {
    width: 76%;
    opacity: 0.72;
  }

  .application-list li {
    grid-template-columns: 70px auto 22px auto 1fr;
  }

  .domain-lockup {
    grid-template-columns: 1fr 60px 1fr;
  }
}

@media (max-width: 760px) {
  .site-header {
    width: calc(100% - 36px);
    height: 68px;
  }

  .wordmark,
  .header-cta {
    font-size: 0.62rem;
  }

  .wordmark-mark {
    width: 18px;
    height: 18px;
  }

  .header-cta {
    padding: 0.3rem 0;
  }

  .hero {
    min-height: 860px;
  }

  .hero::before {
    background: linear-gradient(180deg, rgba(2,6,10,.78), rgba(2,6,10,.93) 66%, rgba(2,6,10,.98));
  }

  .hero-copy {
    width: calc(100% - 36px);
    margin: 0 18px;
    padding-top: 112px;
    align-self: start;
  }

  .hero h1 {
    font-size: clamp(5.3rem, 25vw, 7.8rem);
    line-height: 0.78;
  }

  .domain-pair {
    font-size: clamp(1rem, 5.5vw, 1.35rem);
  }

  .availability {
    margin-top: 2rem;
  }

  .availability p:last-child {
    letter-spacing: 0.08em;
  }

  .hero-intro br {
    display: none;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
    gap: 0.75rem;
  }

  .hero-actions .button {
    width: 100%;
    justify-content: space-between;
  }

  .hero-art {
    top: auto;
    bottom: 0;
    width: 100%;
    height: 56%;
    opacity: 0.58;
  }

  .lunar-scene {
    right: -18%;
    bottom: -8%;
    width: 118%;
  }

  .scroll-cue {
    display: none;
  }

  .section-shell {
    width: calc(100% - 36px);
    padding: 5rem 0;
  }

  .section-heading {
    margin-bottom: 2.4rem;
  }

  .application-list li {
    min-height: 94px;
    grid-template-columns: 44px 1fr;
    gap: 0.3rem 0.9rem;
    align-content: center;
    padding-right: 28px;
  }

  .application-index {
    grid-row: 1 / 3;
    font-size: 1rem;
  }

  .application-en {
    grid-column: 2;
    font-size: 1.35rem;
  }

  .application-separator,
  .application-line {
    display: none;
  }

  .application-zh {
    grid-column: 2;
    font-size: 0.95rem;
  }

  .domain-section {
    width: 100%;
    padding-right: 18px;
    padding-left: 18px;
  }

  .domain-intro {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .domain-intro > div:last-child {
    padding: 2rem 0 0;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .domain-intro br {
    display: none;
  }

  .domain-lockup {
    margin-top: 4.5rem;
    grid-template-columns: 1fr;
    gap: 0.65rem;
  }

  .domain-name,
  .domain-name:last-child {
    font-size: clamp(3rem, 15.5vw, 4.6rem);
    text-align: left;
  }

  .domain-plus {
    text-align: left;
  }

  .domain-orbit {
    margin-top: 1rem;
  }

  .contact-lead {
    margin-top: -0.8rem;
  }

  .contact-row {
    padding: 1.7rem 0;
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .contact-icon {
    width: 48px;
    height: 48px;
  }

  .contact-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .contact-row:nth-of-type(3) .contact-actions {
    grid-template-columns: 1fr;
  }

  .button-small {
    min-width: 0;
    padding: 0.75rem 0.8rem;
    font-size: 0.65rem;
  }

  .disclaimer {
    grid-template-columns: 1fr;
    gap: 1.7rem;
  }

  .disclaimer p + p {
    padding: 1.7rem 0 0;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .site-footer {
    width: calc(100% - 36px);
    padding: 1.5rem 0;
    align-items: flex-start;
    flex-direction: column;
    gap: 0.8rem;
  }
}

@media (max-width: 390px) {
  .wordmark {
    letter-spacing: 0.11em;
  }

  .header-cta {
    letter-spacing: 0.08em;
  }

  .hero h1 {
    font-size: 5.15rem;
  }

  .hero-intro p:last-child {
    font-size: 0.9rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}