:root {
  --bg: #ffffff;
  --bg2: #f6f7fb;
  --card: #ffffff;
  --text: rgba(15, 20, 31, 0.92);
  --muted: rgba(15, 20, 31, 0.62);
  --muted2: rgba(15, 20, 31, 0.46);
  --border: rgba(15, 20, 31, 0.10);
  --shadow: 0 10px 30px rgba(18, 25, 45, 0.10);
  --shadow2: 0 18px 60px rgba(18, 25, 45, 0.14);
  --accent: #d6001c;
  --accent2: #ff2741;
  --radius: 14px;
  --radius2: 22px;
  --maxw: 1200px;
  --font: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", Arial;
  --glow: 0 0 60px rgba(214, 0, 28, 0.08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; height: 100%; }
.floating-blocks {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}
.floating-block {
  position: absolute;
  border-radius: 40% 60% 55% 45% / 55% 45% 60% 40%;
  will-change: transform, opacity;
  filter: blur(70px);
}
.floating-block--1 {
  width: 520px;
  height: 520px;
  background: linear-gradient(135deg, rgba(214, 0, 28, 0.35) 0%, rgba(255, 39, 65, 0.25) 50%, rgba(255, 100, 120, 0.15) 100%);
  top: -5%;
  right: -4%;
  animation: floatBlock1 22s ease-in-out infinite;
}
.floating-block--2 {
  width: 440px;
  height: 440px;
  background: linear-gradient(225deg, rgba(80, 60, 200, 0.30) 0%, rgba(120, 80, 220, 0.20) 50%, rgba(160, 120, 240, 0.10) 100%);
  top: 12%;
  left: -6%;
  animation: floatBlock2 26s ease-in-out infinite;
}
.floating-block--3 {
  width: 380px;
  height: 380px;
  background: linear-gradient(180deg, rgba(0, 140, 200, 0.28) 0%, rgba(0, 180, 220, 0.18) 50%, rgba(80, 200, 240, 0.08) 100%);
  top: 32%;
  right: 8%;
  animation: floatBlock3 24s ease-in-out infinite;
}
.floating-block--4 {
  width: 480px;
  height: 480px;
  background: linear-gradient(315deg, rgba(200, 40, 120, 0.25) 0%, rgba(220, 80, 160, 0.15) 50%, rgba(240, 120, 180, 0.08) 100%);
  top: 52%;
  left: 8%;
  animation: floatBlock4 28s ease-in-out infinite;
}
.floating-block--5 {
  width: 300px;
  height: 300px;
  background: linear-gradient(160deg, rgba(255, 140, 50, 0.25) 0%, rgba(255, 180, 80, 0.15) 100%);
  top: 72%;
  left: 28%;
  animation: floatBlock5 20s ease-in-out infinite;
}
.floating-block--6 {
  width: 260px;
  height: 260px;
  background: linear-gradient(200deg, rgba(0, 200, 150, 0.25) 0%, rgba(40, 220, 180, 0.15) 100%);
  top: 88%;
  right: 5%;
  animation: floatBlock6 18s ease-in-out infinite;
}

@keyframes floatBlock1 {
  0%   { transform: translate(0, 0) scale(1); opacity: 0.5; }
  25%  { transform: translate(-100px, 140px) scale(1.08); opacity: 0.8; }
  50%  { transform: translate(80px, 80px) scale(0.95); opacity: 0.6; }
  75%  { transform: translate(-60px, -80px) scale(1.05); opacity: 0.9; }
  100% { transform: translate(0, 0) scale(1); opacity: 0.5; }
}
@keyframes floatBlock2 {
  0%   { transform: translate(0, 0) scale(1); opacity: 0.4; }
  25%  { transform: translate(120px, -80px) scale(1.1); opacity: 0.7; }
  50%  { transform: translate(-60px, 120px) scale(0.92); opacity: 0.5; }
  75%  { transform: translate(90px, 60px) scale(1.06); opacity: 0.8; }
  100% { transform: translate(0, 0) scale(1); opacity: 0.4; }
}
@keyframes floatBlock3 {
  0%   { transform: translate(0, 0) scale(1); opacity: 0.5; }
  25%  { transform: translate(-90px, -120px) scale(1.05); opacity: 0.7; }
  50%  { transform: translate(100px, -40px) scale(0.96); opacity: 0.9; }
  75%  { transform: translate(-50px, 90px) scale(1.08); opacity: 0.6; }
  100% { transform: translate(0, 0) scale(1); opacity: 0.5; }
}
@keyframes floatBlock4 {
  0%   { transform: translate(0, 0) scale(1); opacity: 0.4; }
  25%  { transform: translate(120px, -70px) scale(1.07); opacity: 0.8; }
  50%  { transform: translate(-80px, -100px) scale(0.94); opacity: 0.6; }
  75%  { transform: translate(60px, 80px) scale(1.04); opacity: 0.7; }
  100% { transform: translate(0, 0) scale(1); opacity: 0.4; }
}
@keyframes floatBlock5 {
  0%   { transform: translate(0, 0) scale(1); opacity: 0.3; }
  30%  { transform: translate(-80px, -100px) scale(1.12); opacity: 0.7; }
  60%  { transform: translate(70px, -50px) scale(0.9); opacity: 0.5; }
  100% { transform: translate(0, 0) scale(1); opacity: 0.3; }
}
@keyframes floatBlock6 {
  0%   { transform: translate(0, 0) scale(1); opacity: 0.3; }
  30%  { transform: translate(90px, -80px) scale(1.1); opacity: 0.6; }
  60%  { transform: translate(-60px, 50px) scale(0.92); opacity: 0.8; }
  100% { transform: translate(0, 0) scale(1); opacity: 0.3; }
}

@media (max-width: 760px) {
  .floating-block--1 { width: 280px; height: 280px; }
  .floating-block--2 { width: 240px; height: 240px; }
  .floating-block--3 { width: 200px; height: 200px; }
  .floating-block--4 { width: 260px; height: 260px; }
  .floating-block--5 { width: 160px; height: 160px; }
  .floating-block--6 { width: 140px; height: 140px; }
  .floating-block { filter: blur(50px); }
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: #ffffff;
  overflow-x: hidden;
  position: relative;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font: inherit; }

.container {
  width: min(var(--maxw), calc(100% - 40px));
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border-bottom: 1px solid rgba(15, 20, 31, 0.06);
}
main { position: relative; z-index: 1; }
footer { position: relative; z-index: 1; }
.topbar__inner {
  height: 66px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand {
  display: flex;
  gap: 12px;
  align-items: center;
  min-width: 0;
}
.brand__icon {
  width: 34px;
  height: 34px;
  border-radius: 12px;
  box-shadow: var(--shadow);
  object-fit: cover;
}
.brand__name {
  font-weight: 800;
  letter-spacing: 0.2px;
  font-size: 15px;
  white-space: nowrap;
}
.brand__tag {
  margin-left: 8px;
  color: var(--muted2);
  font-size: 12px;
  white-space: nowrap;
}

.nav {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav__link {
  color: var(--muted);
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 14px;
  transition: color 160ms ease, background 160ms ease, border-color 160ms ease;
}
.nav__link:hover { color: var(--text); background: rgba(15, 20, 31, 0.04); border-color: rgba(15, 20, 31, 0.06); }

@media (max-width: 860px) {
  .nav { display: none; }
  .brand__tag { display: none; }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 16px;
  border-radius: 12px;
  border: 1px solid rgba(15, 20, 31, 0.10);
  background: rgba(255, 255, 255, 0.86);
  color: var(--text);
  font-weight: 700;
  cursor: pointer;
  transition: transform 120ms ease, background 120ms ease, border-color 120ms ease, box-shadow 120ms ease;
  user-select: none;
}
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow); }
.btn:active { transform: translateY(0); }
.btn[aria-disabled="true"], .btn:disabled { opacity: 0.55; cursor: not-allowed; box-shadow: none; transform: none; }
.btn--primary {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border-color: rgba(214, 0, 28, 0.18);
  color: #fff;
  box-shadow: 0 16px 40px rgba(214, 0, 28, 0.22);
}
.btn--primary:hover { background: linear-gradient(135deg, rgba(214, 0, 28, 0.95), rgba(255, 39, 65, 0.92)); }
.btn--ghost { background: transparent; }
.btn--ghost:hover { background: rgba(15, 20, 31, 0.04); box-shadow: none; }

.hero {
  padding: 18px 0 0;
  position: relative;
}
.hero__slider {
  position: relative;
  height: 720px;
  border-radius: 26px;
  overflow: hidden;
  box-shadow: var(--shadow2);
  background: #0a0e1a;
}
@media (max-width: 980px) { .hero__slider { height: 600px; border-radius: 22px; } }
@media (max-width: 560px) { .hero__slider { height: 520px; border-radius: 18px; } }

#heroParticles {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}

.slider__track {
  position: absolute;
  inset: 0;
  display: flex;
  transform: translate3d(0,0,0);
  transition: transform 520ms cubic-bezier(.2,.8,.2,1);
}
.slider__slide {
  flex: 0 0 100%;
  position: relative;
  overflow: hidden;
  background: #ffffff;
}
.slider__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.03);
}
@media (min-width: 981px) {
  .slider__img {
    object-fit: contain;
    object-position: center;
    transform: none;
  }
}
.slider__shade {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(0,0,0,0.58) 0%, rgba(0,0,0,0.22) 45%, rgba(0,0,0,0.06) 70%, rgba(0,0,0,0.00) 100%),
    linear-gradient(180deg, rgba(0,0,0,0.00) 0%, rgba(0,0,0,0.20) 100%);
}

.hero__overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  z-index: 2;
  pointer-events: none;
}
.hero__overlay-inner {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 22px;
  align-items: center;
}
@media (max-width: 980px) { .hero__overlay-inner { grid-template-columns: 1fr; padding: 6px 0; } }

.hero__content { color: rgba(255,255,255,0.92); pointer-events: auto; }
.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.20);
  background: rgba(0,0,0,0.20);
  backdrop-filter: blur(8px);
  font-size: 13px;
  color: rgba(255,255,255,0.88);
  margin: 0 0 14px;
}
.hero__title {
  margin: 0 0 12px;
  font-size: 52px;
  line-height: 1.02;
  letter-spacing: -1px;
  background: linear-gradient(135deg, #ffffff 0%, rgba(255,255,255,0.85) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero__subtitle {
  margin: 0 0 18px;
  max-width: 50ch;
  color: rgba(255,255,255,0.78);
  font-size: 16px;
  line-height: 1.7;
}
@media (max-width: 560px) { .hero__title { font-size: 38px; } }

.hero__actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 12px; }
.hero__actions .btn { border-color: rgba(255,255,255,0.22); background: rgba(255,255,255,0.10); color: rgba(255,255,255,0.92); box-shadow: none; backdrop-filter: blur(8px); }
.hero__actions .btn:hover { background: rgba(255,255,255,0.14); }
.hero__actions .btn--primary { border-color: rgba(214,0,28,0.18); background: linear-gradient(135deg, var(--accent), var(--accent2)); backdrop-filter: none; }

.hero__meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 18px;
  max-width: 680px;
}
@media (max-width: 980px) { .hero__meta { grid-template-columns: 1fr; } }
.meta {
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.18);
  background: rgba(0,0,0,0.18);
  backdrop-filter: blur(8px);
  padding: 12px 12px;
}
.meta__label { font-size: 12px; color: rgba(255,255,255,0.64); margin-bottom: 6px; }
.meta__value { font-size: 14px; color: rgba(255,255,255,0.92); word-break: break-all; }

.hero__side {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  justify-content: center;
  gap: 12px;
  padding-top: 6px;
  pointer-events: auto;
}
@media (max-width: 980px) {
  .hero__side { display: none; }
}

.platform-logo {
  width: min(360px, 100%);
  border-radius: 18px;
  background: rgba(255,255,255,0.92);
  padding: 12px;
  box-shadow: 0 18px 60px rgba(0,0,0,0.18);
}
.platform-meta { text-align: right; color: rgba(255,255,255,0.86); }
.platform-title { font-weight: 900; letter-spacing: 0.6px; }
.platform-sub { margin-top: 4px; color: rgba(255,255,255,0.70); font-size: 13px; }

.slider__dots {
  position: absolute;
  left: 50%;
  bottom: 14px;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.18);
  background: rgba(0,0,0,0.18);
  backdrop-filter: blur(8px);
  z-index: 3;
}
.slider__dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  border: 0;
  background: rgba(255,255,255,0.40);
  cursor: pointer;
  padding: 0;
  transition: width 220ms ease, background 220ms ease;
}
.slider__dot[aria-current="true"] { width: 20px; background: rgba(255,255,255,0.88); }

.stats-bar {
  padding: 48px 0;
  background: #ffffff;
  position: relative;
  overflow: hidden;
}
.stats-bar::before {
  content: "";
  position: absolute;
  inset: 0;
  background: none;
  pointer-events: none;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
  z-index: 1;
}
@media (max-width: 760px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
}
.stat-item {
  text-align: center;
  padding: 24px 16px;
  border-radius: 20px;
  border: 1px solid rgba(15, 20, 31, 0.08);
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow);
  transition: transform 200ms ease, border-color 200ms ease;
}
.stat-item:hover {
  transform: translateY(-4px);
  border-color: rgba(214, 0, 28, 0.15);
}
.stat-item__number {
  font-size: 42px;
  font-weight: 900;
  letter-spacing: -1px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
}
.stat-item__label {
  margin-top: 8px;
  font-size: 14px;
  color: var(--muted);
  letter-spacing: 0.5px;
}
.stat-item__icon {
  font-size: 28px;
  margin-bottom: 8px;
}

.section { padding: 72px 0; position: relative; }
.section--alt {
  background: #ffffff;
  border-top: 1px solid rgba(15, 20, 31, 0.06);
  border-bottom: 1px solid rgba(15, 20, 31, 0.06);
}
.section--dark {
  background: #ffffff;
  color: var(--text);
}
.section--dark .section__title {
  color: var(--text);
  -webkit-text-fill-color: initial;
}
.section--dark .section__desc { color: var(--muted); }

.section__head { display: flex; align-items: flex-end; justify-content: space-between; gap: 18px; margin-bottom: 18px; }
.section__title { margin: 0; font-size: 30px; letter-spacing: -0.2px; }
.section__desc { margin: 8px 0 0; color: var(--muted); line-height: 1.7; font-size: 14.5px; max-width: 70ch; }
.section__head-left { display: flex; flex-direction: column; gap: 4px; }
.section__head-right { display: flex; gap: 10px; flex-wrap: wrap; }

@media (max-width: 860px) {
  .section__head { flex-direction: column; align-items: flex-start; }
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
@media (max-width: 980px) { .grid { grid-template-columns: 1fr; } }

.card {
  border-radius: var(--radius2);
  border: 1px solid rgba(15, 20, 31, 0.08);
  background: var(--card);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.card:hover { box-shadow: var(--shadow2); }
.card__body { padding: 18px 18px; }
.card__title { font-weight: 820; font-size: 16px; margin: 0 0 8px; letter-spacing: 0.1px; }
.card__desc { margin: 0; color: var(--muted); line-height: 1.7; font-size: 14px; }
.card__meta { margin-top: 12px; color: var(--muted2); font-size: 12px; }
.card__icon {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: rgba(214, 0, 28, 0.08);
  border: 1px solid rgba(214, 0, 28, 0.12);
  color: var(--accent);
  margin-bottom: 12px;
  font-weight: 900;
}

.two-col {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 14px;
  align-items: start;
}
@media (max-width: 980px) { .two-col { grid-template-columns: 1fr; } }

.panel {
  border-radius: var(--radius2);
  border: 1px solid rgba(15, 20, 31, 0.08);
  background: var(--card);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.panel__head {
  padding: 16px 18px;
  border-bottom: 1px solid rgba(15, 20, 31, 0.06);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.panel__title { font-weight: 850; letter-spacing: 0.1px; }
.panel__body { padding: 18px 18px; }
.panel__actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 14px; }

.kv { display: grid; grid-template-columns: 110px 1fr; gap: 10px; padding: 8px 0; }
.kv__k { color: var(--muted2); font-size: 13px; }
.kv__v { color: var(--text); font-size: 14px; line-height: 1.6; word-break: break-word; }
.hint { color: var(--muted2); font-size: 13px; margin-top: 10px; line-height: 1.6; }
.list { margin: 0; padding-left: 18px; color: var(--muted); line-height: 1.8; font-size: 14px; }
.divider { height: 1px; background: rgba(15, 20, 31, 0.06); margin: 14px 0; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; align-items: start; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; } }
.split__right { display: flex; justify-content: flex-end; }
@media (max-width: 860px) { .split__right { justify-content: flex-start; } }

.link { color: var(--accent); font-weight: 700; }
.link:hover { text-decoration: underline; }
.prose { color: var(--muted); line-height: 1.8; font-size: 14px; white-space: pre-wrap; }

.toolbar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 12px; }

.accordion { display: grid; gap: 10px; }
.acc {
  border: 1px solid rgba(15, 20, 31, 0.08);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.98);
  overflow: hidden;
}
.acc__head {
  width: 100%;
  background: transparent;
  border: 0;
  text-align: left;
  padding: 14px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  cursor: pointer;
  color: var(--text);
}
.acc__title { font-weight: 820; font-size: 14px; }
.acc__meta { color: var(--muted2); font-size: 12px; }
.acc__chev { transition: transform 140ms ease; color: var(--muted); }
.acc[aria-expanded="true"] .acc__chev { transform: rotate(180deg); }
.acc__body { padding: 0 14px 14px; display: none; }
.acc[aria-expanded="true"] .acc__body { display: block; }
.acc__notes { white-space: pre-wrap; color: var(--muted); line-height: 1.8; font-size: 14px; }

.footer {
  padding: 36px 0 44px;
  border-top: 1px solid rgba(15, 20, 31, 0.06);
  background: #fff;
}
.footer__inner {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: center;
  flex-wrap: wrap;
}
.footer__brand { display: flex; gap: 12px; align-items: center; }
.footer__icon { width: 38px; height: 38px; border-radius: 12px; object-fit: cover; box-shadow: var(--shadow); }
.footer__name { font-weight: 900; letter-spacing: 0.2px; }
.footer__sub { color: var(--muted2); font-size: 13px; margin-top: 4px; }
.footer__right { display: flex; gap: 14px; flex-wrap: wrap; }

.toast {
  position: fixed;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  background: rgba(15, 20, 31, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: rgba(255, 255, 255, 0.92);
  padding: 10px 12px;
  border-radius: 14px;
  box-shadow: var(--shadow2);
  opacity: 0;
  pointer-events: none;
  transition: opacity 120ms ease, transform 120ms ease;
  max-width: min(560px, calc(100% - 28px));
  text-align: center;
  font-size: 13px;
}
.toast--show { opacity: 1; transform: translateX(-50%) translateY(-2px); }

.policy {
  color: var(--muted);
  line-height: 1.85;
  font-size: 14px;
}
.policy h2 {
  margin: 18px 0 10px;
  color: var(--text);
  font-size: 18px;
  letter-spacing: 0.1px;
}
.policy h3 {
  margin: 14px 0 8px;
  color: var(--text);
  font-size: 15px;
  letter-spacing: 0.1px;
}
.policy p { margin: 10px 0; }
.policy ul { margin: 8px 0 10px; padding-left: 18px; }
.policy li { margin: 6px 0; }

.about-intro__inner {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 24px;
  align-items: center;
}
@media (max-width: 560px) {
  .about-intro__inner { grid-template-columns: 1fr; justify-items: center; text-align: center; }
}
.about-intro__logo {
  width: 88px;
  height: 88px;
  border-radius: 24px;
  object-fit: cover;
  box-shadow: var(--shadow);
}
.about-intro__name {
  margin: 0 0 4px;
  font-size: 24px;
  letter-spacing: 0.2px;
}
.about-intro__slogan {
  margin: 0 0 12px;
  color: var(--accent);
  font-weight: 700;
  font-size: 14px;
}
.about-intro__desc {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
  font-size: 14.5px;
}

.about-community__inner {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 28px;
  align-items: center;
}
@media (max-width: 560px) {
  .about-community__inner { grid-template-columns: 1fr; justify-items: center; text-align: center; }
}
.about-community__qr {
  width: 180px;
  height: 180px;
  border-radius: 16px;
  border: 1px solid rgba(15, 20, 31, 0.08);
  object-fit: contain;
  background: #fff;
}
.about-community__title {
  margin: 0 0 10px;
  font-size: 18px;
  letter-spacing: 0.1px;
}
.about-community__desc {
  margin: 0 0 14px;
  color: var(--muted);
  line-height: 1.8;
  font-size: 14.5px;
}
.about-community__tips {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.about-community__tip {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(214, 0, 28, 0.06);
  border: 1px solid rgba(214, 0, 28, 0.10);
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
}

.feature-list {
  display: grid;
  gap: 10px;
}
.feature-item {
  border: 1px solid rgba(15, 20, 31, 0.08);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.98);
  overflow: hidden;
  transition: box-shadow 160ms ease, transform 160ms ease, border-color 160ms ease;
}
.feature-item:hover {
  box-shadow: var(--shadow);
  border-color: rgba(214, 0, 28, 0.12);
}
.feature-item[data-open="true"] {
  box-shadow: var(--shadow2);
  border-color: rgba(214, 0, 28, 0.15);
}
.feature-item__head {
  width: 100%;
  background: transparent;
  border: 0;
  text-align: left;
  padding: 16px 18px;
  display: flex;
  align-items: center;
  gap: 14px;
  cursor: pointer;
  color: var(--text);
}
.feature-item__icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, rgba(214, 0, 28, 0.08) 0%, rgba(255, 39, 65, 0.06) 100%);
  border: 1px solid rgba(214, 0, 28, 0.12);
  color: var(--accent);
  font-weight: 900;
  font-size: 18px;
  flex-shrink: 0;
  transition: transform 200ms ease;
}
.feature-item:hover .feature-item__icon {
  transform: scale(1.08);
}
.feature-item__info {
  flex: 1;
  min-width: 0;
}
.feature-item__title {
  font-weight: 820;
  font-size: 16px;
  letter-spacing: 0.1px;
  margin: 0 0 4px;
}
.feature-item__summary {
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.6;
  margin: 0;
}
.feature-item__chev {
  transition: transform 180ms ease;
  color: var(--muted2);
  font-size: 18px;
  flex-shrink: 0;
}
.feature-item[data-open="true"] .feature-item__chev {
  transform: rotate(180deg);
}
.feature-item__body {
  display: none;
  padding: 0 18px 18px;
  border-top: 1px solid rgba(15, 20, 31, 0.06);
}
.feature-item[data-open="true"] .feature-item__body {
  display: block;
  animation: fadeSlideIn 280ms ease;
}
.feature-item__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 14px;
}
@media (max-width: 680px) {
  .feature-item__grid { grid-template-columns: 1fr; }
}
.feature-detail {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 12px;
  background: rgba(15, 20, 31, 0.025);
  border: 1px solid rgba(15, 20, 31, 0.05);
  transition: background 160ms ease, border-color 160ms ease, transform 160ms ease;
}
.feature-detail:hover {
  background: rgba(214, 0, 28, 0.03);
  border-color: rgba(214, 0, 28, 0.10);
  transform: translateX(4px);
}
.feature-detail__icon {
  font-size: 20px;
  flex-shrink: 0;
  line-height: 1;
  margin-top: 2px;
}
.feature-detail__text {
  min-width: 0;
}
.feature-detail__title {
  font-weight: 700;
  font-size: 13.5px;
  margin: 0 0 3px;
  letter-spacing: 0.05px;
}
.feature-detail__desc {
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.6;
  margin: 0;
}

@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 600ms cubic-bezier(.2,.8,.2,1), transform 600ms cubic-bezier(.2,.8,.2,1);
}
[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}
[data-reveal-delay="1"] { transition-delay: 80ms; }
[data-reveal-delay="2"] { transition-delay: 160ms; }
[data-reveal-delay="3"] { transition-delay: 240ms; }
[data-reveal-delay="4"] { transition-delay: 320ms; }

.tech-showcase {
  padding: 72px 0;
  background: #ffffff;
  position: relative;
  overflow: hidden;
}
.tech-showcase::before {
  content: "";
  position: absolute;
  inset: 0;
  background: none;
  pointer-events: none;
}
.tech-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  position: relative;
  z-index: 1;
}
@media (max-width: 860px) {
  .tech-grid { grid-template-columns: 1fr; }
}
.tech-card {
  padding: 28px 24px;
  border-radius: 20px;
  border: 1px solid rgba(15, 20, 31, 0.08);
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow);
  transition: transform 200ms ease, border-color 200ms ease, box-shadow 200ms ease;
}
.tech-card:hover {
  transform: translateY(-6px);
  border-color: rgba(214, 0, 28, 0.15);
  box-shadow: var(--shadow2);
}
.tech-card__icon {
  font-size: 36px;
  margin-bottom: 16px;
}
.tech-card__title {
  font-size: 18px;
  font-weight: 800;
  color: var(--text);
  margin: 0 0 8px;
  letter-spacing: 0.1px;
}
.tech-card__desc {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
  margin: 0;
}
.tech-card__tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 14px;
}
.tech-card__tag {
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.3px;
  border: 1px solid rgba(15, 20, 31, 0.10);
  color: var(--accent);
  background: rgba(214, 0, 28, 0.05);
}

.section--dark .panel {
  background: rgba(255, 255, 255, 0.98);
  border-color: rgba(15, 20, 31, 0.08);
}
.section--dark .panel__head {
  border-bottom-color: rgba(15, 20, 31, 0.06);
}
.section--dark .panel__title {
  color: var(--text);
}
.section--dark .kv__k {
  color: var(--muted2);
}
.section--dark .kv__v {
  color: var(--text);
}
.section--dark .prose {
  color: var(--muted);
}
.section--dark .divider {
  background: rgba(15, 20, 31, 0.06);
}
.section--dark .acc {
  background: rgba(255, 255, 255, 0.98);
  border-color: rgba(15, 20, 31, 0.08);
}
.section--dark .acc__head {
  color: var(--text);
}
.section--dark .acc__title {
  color: var(--text);
}
.section--dark .acc__meta {
  color: var(--muted2);
}
.section--dark .acc__chev {
  color: var(--muted2);
}
.section--dark .acc__notes {
  color: var(--muted);
}
.section--dark .btn--ghost {
  color: var(--text);
  border-color: rgba(15, 20, 31, 0.10);
}
.section--dark .btn--ghost:hover {
  background: rgba(15, 20, 31, 0.04);
}
.section--dark .list {
  color: var(--muted);
}
.section--dark .hint {
  color: var(--muted2);
}
.section--dark .panel__body {
  color: var(--text);
}