:root {
  --bg: #f2f2f2;
  --paper: #ffffff;
  --ink: #141414;
  --muted: #4f4f4f;
  --brand: #1f1f1f;
  --brand-2: #6f6f6f;
  --accent: #9b9b9b;
  --line: #d8d8d8;
  --header-height: 74px;
  --shadow: 0 16px 40px rgba(0, 0, 0, 0.12);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Noto Serif TC", "PingFang TC", "Microsoft JhengHei", serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 15% 10%, rgba(85, 85, 85, 0.13), transparent 36%),
    radial-gradient(circle at 80% 0%, rgba(30, 30, 30, 0.09), transparent 34%),
    linear-gradient(180deg, #fafafa 0%, #f2f2f2 35%, #ececec 100%);
  line-height: 1.6;
}

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

ul {
  margin: 0.7rem 0 0.9rem;
  padding-left: 1.2rem;
}

li {
  margin: 0.25rem 0;
}

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

.container {
  width: min(1120px, 92vw);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.93);
  border-bottom: 1px solid rgba(216, 216, 216, 0.8);
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 74px;
  gap: 1rem;
}

.logo {
  font-family: "Oswald", sans-serif;
  font-size: 1.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.logo small {
  display: block;
  font-family: "Barlow Condensed", sans-serif;
  letter-spacing: 0.22em;
  font-size: 0.92rem;
  color: var(--muted);
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  justify-content: flex-end;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  color: var(--ink);
  font-family: "Barlow Condensed", sans-serif;
  font-size: 1rem;
  letter-spacing: 0.05em;
  padding: 0.45rem 0.8rem;
  cursor: pointer;
}

.site-nav a {
  padding: 0.45rem 0.75rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-family: "Barlow Condensed", sans-serif;
  font-size: 1rem;
  letter-spacing: 0.05em;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.site-nav a:hover,
.site-nav a.active {
  border-color: var(--line);
  background: #fff;
  transform: translateY(-1px);
}

.cover {
  position: relative;
  min-height: calc(90vh - var(--header-height));
  min-height: calc(90svh - var(--header-height));
  display: flex;
  align-items: center;
  background-image: url("https://ama21ng.hk/images/venues/AMA21-openarea.jpg");
  background-size: cover;
  background-position: center;
  isolation: isolate;
}

.cover-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(0, 0, 0, 0.68), rgba(0, 0, 0, 0.35));
  z-index: -1;
}

.cover-content {
  color: #fff;
  padding: 4rem 0;
}

.cover-content h1 {
  margin: 0;
  max-width: 16ch;
  font-size: clamp(2.2rem, 5vw, 4.6rem);
  line-height: 1.08;
}

.cover-content p {
  margin: 1rem 0 1.4rem;
  max-width: 60ch;
  color: rgba(255, 255, 255, 0.92);
}

.cover .btn-ghost {
  border-color: rgba(255, 255, 255, 0.55);
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
}

.cover .btn-ghost:hover {
  background: rgba(255, 255, 255, 0.22);
}

.scroll-hint {
  display: inline-block;
  margin-top: 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.8);
  font-family: "Barlow Condensed", sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.95rem;
}

.hero {
  padding: clamp(1.8rem, 2.8vw, 3.2rem) 0 2.2rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: clamp(1.2rem, 3vw, 2.4rem);
  align-items: center;
}

.hero-copy h1 {
  margin: 0;
  font-size: clamp(2rem, 3.8vw, 3.7rem);
  line-height: 1.1;
}

.hero-copy p {
  color: var(--muted);
  margin: 1rem 0 1.4rem;
}

.tag {
  display: inline-block;
  margin-bottom: 0.65rem;
  padding: 0.22rem 0.7rem;
  border-radius: 999px;
  font-family: "Barlow Condensed", sans-serif;
  font-size: 0.88rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #2d2d2d;
  background: rgba(45, 45, 45, 0.1);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 0.62rem 1rem;
  min-width: 130px;
  font-family: "Barlow Condensed", sans-serif;
  letter-spacing: 0.05em;
  transition: all 0.2s ease;
}

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

.btn-main:hover {
  background: #000;
}

.btn-ghost {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.85);
}

.btn-ghost:hover {
  background: #fff;
}

.btn-row {
  display: flex;
  gap: 0.7rem;
  flex-wrap: wrap;
}

.panel {
  background: var(--paper);
  border-radius: 20px;
  border: 1px solid #e3e3e3;
  box-shadow: var(--shadow);
}

.hero-image {
  overflow: hidden;
}

.hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.section {
  padding: 2.2rem 0 3.6rem;
  scroll-margin-top: 92px;
}

.section h2 {
  margin: 0 0 0.35rem;
  font-size: clamp(1.45rem, 2.3vw, 2.2rem);
}

.heading-with-icon {
  display: inline-flex;
  align-items: center;
  gap: 0.42rem;
}

.heading-with-icon ion-icon {
  color: #6a6a6a;
  font-size: 1.05em;
  flex-shrink: 0;
  display: inline-block;
  line-height: 1;
  vertical-align: middle;
  transform: translateY(0.03em);
}

.heading-with-icon span {
  line-height: 1.2;
}

.section-head {
  margin-bottom: 2.2rem;
}

.section-head h2 {
  margin: 0 0 1rem;
}

.section-head p {
  margin: 0 0 0.6rem;
  color: var(--muted);
}

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

.service-card {
  padding: 1rem;
  border: 1px solid #e6e6e6;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.72);
  transform: translateY(10px);
  opacity: 0;
  animation: rise 0.7s ease forwards;
}

.service-card:nth-child(2) {
  animation-delay: 0.1s;
}

.service-card:nth-child(3) {
  animation-delay: 0.2s;
}

.service-card:nth-child(4) {
  animation-delay: 0.3s;
}

.service-card h3 {
  margin: 0 0 0.4rem;
  font-size: 1.22rem;
}

.service-card p {
  margin: 0 0 0.65rem;
  color: var(--muted);
}

.service-card a {
  font-family: "Barlow Condensed", sans-serif;
  color: #1f1f1f;
  border-bottom: 1px solid currentColor;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.step-card {
  padding: 1rem;
}

.step-card h3 {
  margin: 0 0 0.45rem;
  font-size: 1.1rem;
}

.step-card p {
  margin: 0;
  color: var(--muted);
}

.review-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.review-card {
  margin: 0;
  padding: 1rem;
}

.faq-list {
  display: grid;
  gap: 0.8rem;
}

.faq-item {
  padding: 1rem;
}

.faq-item h3 {
  margin: 0 0 0.1rem;
  font-size: 1.04rem;
}

.faq-item p {
  margin: 0;
  color: var(--muted);
}

.content-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 1rem;
}

.article {
  padding: 1rem 1.1rem;
}

.article h3 {
  margin-top: 0;
}

.article p {
  color: #2f2f2f;
}

#contact .article h2 {
  margin-bottom: 0.5rem;
}

#contact .article p {
  margin-top: 0.45rem;
}

#contact .article .btn-row {
  margin-top: 1rem;
}

.article ul {
  list-style: none;
  margin: 0.85rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}

.article li {
  position: relative;
  margin: 0;
  padding: 0;
  border: 1px solid #e2e2e2;
  border-radius: 12px;
  background: #fafafa;
  overflow: hidden;
  transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.article li a {
  display: block;
  padding: 0.72rem 0.85rem 0.72rem 1rem;
}

.article li:hover {
  background: #fff9e8;
  border-color: #eee2bc;
  transform: translateY(-1px);
}

.article li:hover::before {
  background: #e7c96f;
}

.article li:hover small {
  color: #2b2b2b;
}

.article li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  bottom: 0.55rem;
  width: 3px;
  border-radius: 999px;
  background: var(--brand);
}

.article li strong {
  display: block;
  margin-bottom: 0.15rem;
}

.article li br {
  display: none;
}

.article li small {
  display: block;
  color: var(--muted);
  line-height: 1.55;
}

.side-stack {
  display: grid;
  gap: 1rem;
}

.mini {
  padding: 1rem;
}

blockquote {
  margin: 0;
  padding: 0.75rem 0.9rem;
  border-left: 4px solid var(--brand);
  background: #fff;
  border-radius: 10px;
  color: #2f2f2f;
}

blockquote + blockquote {
  margin-top: 0.8rem;
}

.site-footer {
  border-top: 1px solid var(--line);
  margin-top: 2.4rem;
}

.footer-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1rem 0 2rem;
  color: #4a4a4a;
  font-size: 0.92rem;
}

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

@media (max-width: 920px) {
  .hero-grid,
  .content-grid {
    grid-template-columns: 1fr;
  }

  .steps-grid,
  .review-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero {
    padding-top: 1.2rem;
  }

  .footer-row {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 760px) {
  .header-row {
    flex-wrap: wrap;
    min-height: auto;
    padding: 0.62rem 0;
    gap: 0.62rem;
  }

  .logo {
    font-size: 1.56rem;
    line-height: 1;
  }

  .logo small {
    font-size: 0.78rem;
    letter-spacing: 0.16em;
  }

  .nav-toggle {
    display: inline-flex;
    margin-left: auto;
    font-size: 1rem;
    padding: 0.44rem 0.76rem;
    border-radius: 8px;
  }

  .site-nav {
    display: none;
    width: 100%;
    flex-direction: column;
    gap: 0.42rem;
    justify-content: flex-start;
    padding-top: 0.5rem;
    border-top: 1px solid var(--line);
  }

  .site-header[data-open="true"] .site-nav {
    display: flex;
  }

  .site-nav a {
    width: 100%;
    text-align: center;
    border-radius: 8px;
    font-size: 0.98rem;
    padding: 0.48rem 0.72rem;
  }
}

@media (max-width: 640px) {
  .service-grid {
    grid-template-columns: 1fr;
  }

  .steps-grid,
  .review-grid {
    grid-template-columns: 1fr;
  }

  .cover-content {
    padding: 3.2rem 0;
  }
}