:root {
  --ink: #1c1410;
  --ink-2: #5c4e44;
  --mute: #8a7b70;
  --paper: #fffaf6;
  --paper-2: #f7f0e9;
  --line: rgba(28, 20, 16, 0.1);
  --orange: #ff7a00;
  --orange-2: #e56a00;
  --orange-soft: #ffb56a;
  --orange-wash: #fff1e4;
  --deep: #1a1008;
  --white: #fff;
  --display: "Noto Serif SC", "Songti SC", serif;
  --sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --max: 1040px;
  --header: 68px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

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

.grain {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 40;
  opacity: 0.028;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode: multiply;
}

.wrap {
  width: min(100% - 2.4rem, var(--max));
  margin-inline: auto;
}

/* Header */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 30;
  height: var(--header);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(1.2rem, 4vw, 2.2rem);
  background: rgba(255, 250, 246, 0.78);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease, background 0.25s ease;
}

.site-header.is-scrolled {
  border-bottom-color: var(--line);
  background: rgba(255, 250, 246, 0.94);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--display);
  font-weight: 600;
  letter-spacing: 0.08em;
}

.brand img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  object-fit: cover;
}

.nav {
  display: flex;
  gap: 1.6rem;
}

.nav a {
  font-size: 0.92rem;
  color: var(--ink-2);
  transition: color 0.2s ease;
}

.nav a:hover {
  color: var(--orange);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 0;
  background: transparent;
  cursor: pointer;
  padding: 0;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 1.5px;
  margin: 5px auto;
  background: var(--ink);
}

.nav-toggle[aria-expanded="true"] span:first-child {
  transform: translateY(3.25px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:last-child {
  transform: translateY(-3.25px) rotate(-45deg);
}

.nav-toggle span {
  transition: transform 0.2s ease;
}

/* Button */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 1.4rem;
  border-radius: 6px;
  background: var(--orange);
  color: var(--white);
  font-weight: 500;
  transition: background 0.2s ease, transform 0.2s ease;
}

.btn:hover {
  background: var(--orange-2);
  transform: translateY(-1px);
}

.btn-line {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}

.btn-line:hover {
  border-color: var(--orange);
  color: var(--orange-2);
  background: transparent;
}

/* Hero */
.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  place-items: center;
  overflow: hidden;
  color: var(--white);
  background: var(--deep);
  text-align: center;
}

.hero-bg {
  position: absolute;
  inset: 0;
}

.hero-glow {
  position: absolute;
  inset: -10%;
  background:
    radial-gradient(ellipse 55% 45% at 50% 35%, rgba(255, 122, 0, 0.42), transparent 60%),
    radial-gradient(ellipse 40% 35% at 70% 70%, rgba(229, 106, 0, 0.18), transparent 55%),
    linear-gradient(165deg, #120c07, #271608 50%, #1a1008);
  animation: glow-drift 12s ease-in-out infinite alternate;
}

@keyframes glow-drift {
  from {
    transform: scale(1);
  }
  to {
    transform: scale(1.05) translateY(-1%);
  }
}

.hero-ring {
  position: absolute;
  left: 50%;
  top: 42%;
  width: min(70vw, 520px);
  aspect-ratio: 1;
  transform: translate(-50%, -50%);
  border: 1px solid rgba(255, 181, 106, 0.18);
  border-radius: 50%;
  animation: ring-breathe 8s ease-in-out infinite;
}

@keyframes ring-breathe {
  0%,
  100% {
    opacity: 0.35;
    transform: translate(-50%, -50%) scale(1);
  }
  50% {
    opacity: 0.7;
    transform: translate(-50%, -50%) scale(1.04);
  }
}

.hero-inner {
  position: relative;
  z-index: 2;
  padding: calc(var(--header) + 2rem) 1.2rem 5rem;
}

.hero-logo {
  width: 120px;
  height: 120px;
  margin: 0 auto 1.5rem;
  border-radius: 28px;
  object-fit: cover;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
  opacity: 0;
  transform: translateY(20px);
  animation: rise 0.9s 0.1s ease forwards;
}

.hero-name {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(3.2rem, 11vw, 6.2rem);
  font-weight: 700;
  letter-spacing: 0.14em;
  line-height: 1.05;
  opacity: 0;
  transform: translateY(20px);
  animation: rise 0.9s 0.25s ease forwards;
}

.hero-line {
  margin: 1.1rem 0 0;
  font-family: var(--display);
  font-size: clamp(1.15rem, 2.8vw, 1.55rem);
  font-weight: 500;
  color: rgba(255, 255, 255, 0.92);
  opacity: 0;
  transform: translateY(20px);
  animation: rise 0.9s 0.4s ease forwards;
}

.hero-desc {
  margin: 0.85rem 0 0;
  font-size: 0.98rem;
  font-weight: 300;
  letter-spacing: 0.08em;
  color: rgba(255, 241, 228, 0.7);
  opacity: 0;
  transform: translateY(20px);
  animation: rise 0.9s 0.52s ease forwards;
}

.hero-inner .btn {
  margin-top: 2rem;
  opacity: 0;
  transform: translateY(20px);
  animation: rise 0.9s 0.65s ease forwards;
}

@keyframes rise {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-scroll {
  position: absolute;
  left: 50%;
  bottom: 1.6rem;
  transform: translateX(-50%);
  width: 22px;
  height: 36px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 12px;
}

.hero-scroll span {
  display: block;
  width: 3px;
  height: 8px;
  margin: 8px auto 0;
  border-radius: 2px;
  background: var(--orange-soft);
  animation: scroll-dot 1.6s ease-in-out infinite;
}

@keyframes scroll-dot {
  0% {
    opacity: 1;
    transform: translateY(0);
  }
  100% {
    opacity: 0;
    transform: translateY(12px);
  }
}

/* Sections */
.section {
  padding: clamp(4.5rem, 10vw, 7rem) 0;
}

.eyebrow {
  margin: 0 0 0.75rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  color: var(--orange-2);
}

.section h2 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: 0.03em;
}

.lead {
  margin: 1.2rem 0 0;
  max-width: 34em;
  font-size: 1.05rem;
  color: var(--ink-2);
}

.world {
  background: linear-gradient(180deg, var(--orange-wash), var(--paper) 65%);
  border-bottom: 1px solid var(--line);
}

/* Split live */
.split {
  background: var(--paper);
}

.split-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(2rem, 6vw, 4rem);
  align-items: center;
}

.split-copy p {
  margin: 1rem 0 0;
  color: var(--ink-2);
  max-width: 28em;
}

.ticks {
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
}

.ticks li {
  position: relative;
  padding: 0.55rem 0 0.55rem 1.2rem;
  border-top: 1px solid var(--line);
  color: var(--ink-2);
}

.ticks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.15rem;
  width: 6px;
  height: 6px;
  border-radius: 1px;
  background: var(--orange);
}

.split-visual {
  min-height: 280px;
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at 50% 40%, rgba(255, 122, 0, 0.18), transparent 55%),
    linear-gradient(160deg, #2a170a, #140d08);
  border-radius: 8px;
  overflow: hidden;
}

.panel-live {
  display: grid;
  justify-items: center;
  gap: 0.55rem;
  color: var(--white);
  text-align: center;
}

.live-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #ff3b30;
  box-shadow: 0 0 0 0 rgba(255, 59, 48, 0.5);
  animation: live-pulse 1.6s ease-out infinite;
}

@keyframes live-pulse {
  70% {
    box-shadow: 0 0 0 12px rgba(255, 59, 48, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(255, 59, 48, 0);
  }
}

.panel-live strong {
  font-family: var(--display);
  font-size: 2rem;
  letter-spacing: 0.2em;
}

.panel-live em {
  font-style: normal;
  font-size: 0.92rem;
  color: rgba(255, 241, 228, 0.7);
}

/* Life */
.life {
  background:
    radial-gradient(ellipse 50% 40% at 100% 0%, rgba(255, 122, 0, 0.08), transparent 50%),
    var(--paper-2);
}

.life-rows {
  margin-top: 2.5rem;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
}

.life-rows article {
  padding: 1.6rem 1.2rem 1.6rem 0;
  border-bottom: 1px solid var(--line);
}

.life-rows article:nth-child(odd) {
  padding-right: 1.8rem;
  border-right: 1px solid var(--line);
}

.life-rows article:nth-child(even) {
  padding-left: 1.8rem;
}

.life-rows span {
  display: block;
  margin-bottom: 0.7rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--orange);
}

.life-rows h3 {
  margin: 0 0 0.5rem;
  font-family: var(--display);
  font-size: 1.25rem;
  font-weight: 600;
}

.life-rows p {
  margin: 0;
  color: var(--ink-2);
  font-size: 0.96rem;
}

/* Enter */
.enter {
  background: linear-gradient(180deg, var(--paper), var(--orange-wash));
}

.enter-box {
  text-align: center;
  padding: clamp(2.5rem, 6vw, 4rem) 1.2rem;
}

.enter-box img {
  width: 72px;
  height: 72px;
  margin: 0 auto 1.2rem;
  border-radius: 18px;
  object-fit: cover;
}

.enter-box p {
  margin: 0.85rem auto 0;
  max-width: 22em;
  color: var(--ink-2);
}

.enter-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.enter-note {
  margin-top: 1rem !important;
  font-size: 0.82rem !important;
  color: var(--mute) !important;
}

/* Footer */
.site-footer {
  padding: 1.6rem 0 2rem;
  border-top: 1px solid var(--line);
  background: var(--paper);
}

.footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--display);
  font-weight: 600;
  letter-spacing: 0.06em;
}

.footer-brand img {
  width: 28px;
  height: 28px;
  border-radius: 7px;
  object-fit: cover;
}

.footer-row > p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--mute);
}

/* Reveal */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.reveal.is-in {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 820px) {
  .split-grid,
  .life-rows {
    grid-template-columns: 1fr;
  }

  .life-rows article:nth-child(odd),
  .life-rows article:nth-child(even) {
    padding: 1.4rem 0;
    border-right: 0;
  }
}

@media (max-width: 720px) {
  .nav-toggle {
    display: block;
  }

  .nav {
    position: fixed;
    top: var(--header);
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    gap: 0;
    padding: 0.4rem 1.2rem 1rem;
    background: rgba(255, 250, 246, 0.98);
    border-bottom: 1px solid var(--line);
  }

  .nav.is-open {
    display: flex;
  }

  .nav a {
    padding: 0.85rem 0;
    border-bottom: 1px solid var(--line);
  }

  .hero-logo {
    width: 96px;
    height: 96px;
    border-radius: 22px;
  }

  .enter-actions {
    flex-direction: column;
    align-items: stretch;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .hero-logo,
  .hero-name,
  .hero-line,
  .hero-desc,
  .hero-inner .btn,
  .hero-glow,
  .hero-ring,
  .live-dot,
  .hero-scroll span,
  .reveal {
    animation: none !important;
    transition: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
}