@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;600;700;800&family=Noto+Serif+SC:wght@500;600;700&display=swap');

:root {
  --bg: #07161f;
  --bg-soft: #0b2433;
  --surface: rgba(255, 255, 255, 0.06);
  --surface-strong: rgba(255, 255, 255, 0.1);
  --text: #eff8ff;
  --text-soft: #b7cedf;
  --line: rgba(195, 223, 242, 0.2);
  --brand: #5dc1ff;
  --brand-deep: #164f73;
  --accent: #f4b261;
  --ok: #50d5b7;
  --max-width: 1160px;
  --shadow: 0 16px 40px rgba(0, 0, 0, 0.28);
}

* { box-sizing: border-box; }

html,
body { min-height: 100%; }

body {
  margin: 0;
  color: var(--text);
  font-family: "Manrope", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.65;
  background:
    radial-gradient(80rem 35rem at 90% -10%, rgba(93, 193, 255, 0.23), transparent 58%),
    radial-gradient(52rem 35rem at 0% 20%, rgba(244, 178, 97, 0.16), transparent 62%),
    linear-gradient(130deg, #06111a 0%, #0a2231 46%, #07161f 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(circle at center, black 30%, transparent 90%);
  opacity: 0.45;
}

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

.container {
  width: min(100% - 2rem, var(--max-width));
  margin: 0 auto;
}

header {
  position: sticky;
  top: 0;
  z-index: 40;
  border-bottom: 1px solid var(--line);
  background: rgba(7, 22, 31, 0.78);
  backdrop-filter: blur(12px);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 0;
}

.brand {
  font-weight: 800;
  letter-spacing: 0.03em;
  color: #fff;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}

nav a {
  display: inline-block;
  padding: 0.45rem 0.7rem;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-soft);
  transition: all 0.24s ease;
}

nav a.active,
nav a:hover {
  color: #fff;
  background: rgba(93, 193, 255, 0.16);
}

.lang-toggle {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  padding: 0.25rem;
  border-radius: 999px;
  display: inline-flex;
  gap: 0.2rem;
}

.lang-toggle button {
  border: 0;
  background: transparent;
  padding: 0.4rem 0.72rem;
  border-radius: 999px;
  font-weight: 800;
  font-size: 0.82rem;
  color: var(--text-soft);
  cursor: pointer;
}

.lang-toggle button.active {
  background: linear-gradient(90deg, var(--brand), #8dd5ff);
  color: #052031;
}

.hero {
  position: relative;
  padding: 6rem 0 3.6rem;
}

.hero::after {
  content: "";
  position: absolute;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  right: -140px;
  top: 30px;
  background: radial-gradient(circle, rgba(80, 213, 183, 0.35), transparent 68%);
  filter: blur(4px);
  pointer-events: none;
}

.hero-shell {
  display: grid;
  grid-template-columns: 7fr 5fr;
  gap: 1.2rem;
  align-items: stretch;
}

.hero-main,
.hero-side {
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.hero-main {
  padding: 2rem 2rem 2.2rem;
}

.hero-side {
  padding: 1.4rem;
}

.hero-media {
  margin-top: 1rem;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--line);
}

.hero-media img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  display: block;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: #9fd8ff;
  font-weight: 700;
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: currentColor;
}

.hero h1,
.section h2,
h1 {
  font-family: "Noto Serif SC", "STSong", serif;
  letter-spacing: 0.01em;
}

.hero h1 {
  margin: 0.75rem 0 1rem;
  font-size: clamp(2.1rem, 4vw, 3.25rem);
  line-height: 1.24;
}

.hero p {
  margin: 0;
  color: var(--text-soft);
  max-width: 700px;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
  margin-top: 0.9rem;
}

.metric {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.9rem;
  background: rgba(4, 18, 28, 0.45);
}

.metric strong {
  display: block;
  font-size: 1.4rem;
  color: #fff;
}

.metric span {
  color: var(--text-soft);
  font-size: 0.84rem;
}

.cta-row {
  margin-top: 1.5rem;
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.16rem;
  border-radius: 10px;
  border: 1px solid transparent;
  font-weight: 800;
  font-size: 0.93rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.btn.primary {
  background: linear-gradient(100deg, #ffbf6e, #f4a340);
  color: #172b3a;
  box-shadow: 0 10px 26px rgba(244, 162, 97, 0.3);
}

.btn.secondary {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.04);
  color: #e9f8ff;
}

.section {
  padding: 3rem 0;
}

.section h2 {
  margin: 0 0 1rem;
  font-size: clamp(1.55rem, 2.2vw, 2.2rem);
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.section-head p {
  margin: 0;
  color: var(--text-soft);
  max-width: 560px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 1rem;
}

.card {
  grid-column: span 6;
  padding: 1.25rem;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
  box-shadow: var(--shadow);
  transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(157, 216, 255, 0.55);
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.04));
}

.card::before {
  content: "";
  display: block;
  width: 42px;
  height: 3px;
  border-radius: 99px;
  margin-bottom: 0.8rem;
  background: linear-gradient(90deg, var(--brand), var(--ok));
}

.card.visual {
  padding: 0;
  overflow: hidden;
}

.card.visual::before {
  display: none;
}

.card.visual img {
  width: 100%;
  height: 190px;
  object-fit: cover;
  display: block;
}

.card-body {
  padding: 1.1rem 1.2rem 1.3rem;
}

.card.wide {
  grid-column: span 12;
}

.media-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 1rem;
}

.media-grid .media-main {
  grid-column: span 7;
}

.media-grid .media-text {
  grid-column: span 5;
}

.media-box {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
  overflow: hidden;
  box-shadow: var(--shadow);
}

.media-box img {
  width: 100%;
  height: 100%;
  min-height: 300px;
  object-fit: cover;
  display: block;
}

.media-text {
  padding: 1.4rem;
}

.card h3 {
  margin: 0 0 0.5rem;
  color: #fff;
}

.card p,
.card li,
.notice,
footer,
.hero-side p {
  color: var(--text-soft);
}

.list {
  margin: 0;
  padding-left: 1rem;
}

.notice {
  border: 1px solid rgba(80, 213, 183, 0.36);
  background: rgba(80, 213, 183, 0.08);
  padding: 1rem;
  border-radius: 10px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
}

label {
  display: block;
  font-weight: 700;
  margin-bottom: 0.35rem;
  color: #dcf2ff;
}

input,
textarea {
  width: 100%;
  padding: 0.72rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  font: inherit;
  color: #eff8ff;
  background: rgba(255, 255, 255, 0.03);
}

input:focus,
textarea:focus {
  outline: none;
  border-color: rgba(93, 193, 255, 0.7);
  box-shadow: 0 0 0 3px rgba(93, 193, 255, 0.14);
}

textarea { min-height: 130px; }
.full { grid-column: 1 / -1; }
.hp-field { position: absolute; left: -5000px; }

footer {
  margin-top: 3rem;
  border-top: 1px solid var(--line);
  padding: 1.7rem 0 2.8rem;
  font-size: 0.95rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-links a {
  color: #d8efff;
}

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.show {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .hero-shell { grid-template-columns: 1fr; }
  .media-grid .media-main,
  .media-grid .media-text { grid-column: span 12; }
}

@media (max-width: 860px) {
  .card { grid-column: span 12; }
  .form-grid,
  .metric-grid { grid-template-columns: 1fr; }
  .nav-wrap { align-items: flex-start; flex-direction: column; }
  nav ul { gap: 0.25rem; }
  .hero-main { padding: 1.3rem; }
  .hero { padding-top: 5rem; }
}