:root {
  --ink: #0a2433;
  --brand: #0b3d5c;
  --sea: #147a8c;
  --mint: #1db584;
  --foam: #e8f4f8;
  --sand: #f7fafb;
  --muted: #5e6d75;
  --line: rgba(11, 61, 92, 0.12);
  --paper: #ffffff;
  --shadow: 0 18px 48px rgba(10, 36, 51, 0.14);
  font-family: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  color: var(--ink);
  background: var(--sand);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--sea);
  text-decoration: none;
}

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

.wrap {
  width: min(1080px, calc(100% - 40px));
  margin: 0 auto;
}

/* —— Hero：全幅品牌面 —— */
.hero {
  position: relative;
  min-height: min(78vh, 720px);
  color: #fff;
  overflow: hidden;
  background: linear-gradient(145deg, #072a40 0%, #0b3d5c 42%, #147a8c 78%, #1db584 120%);
}

.hero-media {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 55% at 75% 20%, rgba(29, 181, 132, 0.28), transparent 60%),
    radial-gradient(ellipse 50% 40% at 15% 80%, rgba(20, 122, 140, 0.35), transparent 55%);
  pointer-events: none;
}

.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("../img/poster.png");
  background-size: cover;
  background-position: center 30%;
  opacity: 0.22;
  mix-blend-mode: soft-light;
}

.hero-inner {
  position: relative;
  z-index: 1;
  width: min(1080px, calc(100% - 40px));
  margin: 0 auto;
  padding: calc(28px + env(safe-area-inset-top, 0px)) 0 72px;
  min-height: min(78vh, 720px);
  display: flex;
  flex-direction: column;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #fff;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.04em;
}

.brand img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  object-fit: cover;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  font-size: 14px;
}

.nav-links a {
  color: rgba(255, 255, 255, 0.88);
}

.nav-links a:hover {
  color: #fff;
}

.hero-copy {
  margin-top: auto;
  padding-top: 64px;
  max-width: 640px;
}

.hero-copy h1 {
  margin: 0;
  font-size: clamp(48px, 9vw, 84px);
  line-height: 1.05;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-shadow: 0 8px 32px rgba(0, 0, 0, 0.28);
}

.hero-copy p {
  margin: 18px 0 0;
  font-size: clamp(16px, 2.4vw, 20px);
  line-height: 1.55;
  color: rgba(255, 255, 255, 0.9);
  max-width: 28em;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: transform 0.18s ease, opacity 0.18s ease;
}

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

.btn-primary {
  background: #fff;
  color: var(--brand);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.35);
  backdrop-filter: blur(6px);
}

.btn-solid {
  background: var(--brand);
  color: #fff;
}

/* —— Sections —— */
.section {
  padding: 72px 0;
}

.section h2 {
  margin: 0 0 12px;
  font-size: clamp(26px, 4vw, 34px);
  letter-spacing: 0.02em;
}

.section .lead {
  margin: 0 0 32px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.6;
  max-width: 40em;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

@media (max-width: 820px) {
  .grid-3 {
    grid-template-columns: 1fr;
  }
}

.feature {
  padding: 28px 24px;
  border-radius: 20px;
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: 0 8px 28px rgba(11, 61, 92, 0.05);
}

.feature .n {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--sea);
  margin-bottom: 12px;
}

.feature h3 {
  margin: 0 0 8px;
  font-size: 18px;
}

.feature p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
}

.panel {
  padding: 28px 28px 24px;
  border-radius: 20px;
  background: var(--foam);
  border: 1px solid var(--line);
}

.panel h3 {
  margin: 0 0 14px;
  font-size: 18px;
}

.kv {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 10px 16px;
  font-size: 14px;
  line-height: 1.5;
}

.kv dt {
  color: var(--muted);
}

.kv dd {
  margin: 0;
  font-weight: 600;
  word-break: break-all;
}

.note {
  margin: 16px 0 0;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.55;
}

.legal-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.legal-list a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 999px;
  background: var(--paper);
  border: 1px solid var(--line);
  color: var(--brand);
  font-weight: 600;
  font-size: 14px;
}

.contact-row {
  display: flex;
  flex-wrap: wrap;
  gap: 24px 40px;
}

.contact-row .item strong {
  display: block;
  font-size: 13px;
  color: var(--muted);
  font-weight: 500;
  margin-bottom: 6px;
}

.contact-row .item a,
.contact-row .item span {
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
}

/* —— Footer —— */
.footer {
  padding: 28px 0 calc(28px + env(safe-area-inset-bottom, 0px));
  border-top: 1px solid var(--line);
  background: #fff;
  color: var(--muted);
  font-size: 13px;
  text-align: center;
  line-height: 1.7;
}

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

.footer a:hover {
  color: var(--brand);
}

/* —— Inner pages —— */
.page-bar {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.page-bar .back {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--foam);
  color: var(--brand);
  font-size: 18px;
  line-height: 1;
}

.page-bar .title {
  font-weight: 700;
  font-size: 16px;
}

.article {
  width: min(760px, calc(100% - 40px));
  margin: 28px auto 64px;
  padding: 28px 24px;
  background: #fff;
  border-radius: 20px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.article h1 {
  margin: 0 0 8px;
  font-size: 26px;
}

.article .meta {
  margin: 0 0 24px;
  color: var(--muted);
  font-size: 13px;
}

.article .body {
  font-size: 15px;
  line-height: 1.75;
  color: #24343c;
}

.article .body h3 {
  margin: 28px 0 10px;
  font-size: 17px;
  color: var(--brand);
}

.article .body p {
  margin: 0 0 12px;
}

.status {
  width: min(760px, calc(100% - 40px));
  margin: 40px auto;
  text-align: center;
  color: var(--muted);
}

@media (max-width: 640px) {
  .hero-inner {
    padding-bottom: 56px;
  }
  .kv {
    grid-template-columns: 1fr;
    gap: 4px;
  }
  .kv dt {
    margin-top: 8px;
  }
}