/* =============================================================
   INDEX.CSS — 首页专属样式
   ============================================================= */

/* ====== HERO BANNER ====== */
.hero-banner {
  position: relative; height: 78vh; min-height: 520px;
  overflow: hidden; background: var(--c-ink);
}
.hero-banner .hero-img {
  position: absolute; inset: 0;
  background: url('../picture/banner.jpg') center/cover no-repeat;
}
.hero-banner .hero-mask {
  position: absolute; inset: 0;
  background: linear-gradient(105deg, rgba(11,82,91,0.92) 0%, rgba(11,82,91,0.78) 35%, rgba(11,82,91,0.35) 65%, rgba(11,82,91,0.1) 100%);
}
.hero-banner .hero-txt { position: relative; z-index: 2; height: 100%; display: flex; align-items: center; }
.hero-banner .hero-tag {
  display: inline-block; background: rgba(255,255,255,0.10);
  border: 1px solid rgba(255,255,255,0.18); padding: 0.3rem 0.9rem;
  border-radius: 30px; font-size: 0.78rem; color: rgba(255,255,255,0.85);
  letter-spacing: 0.06em; margin-bottom: 1.3rem;
}
.hero-banner h1 {
  font-size: 2.6rem; font-weight: 800; color: #fff; line-height: 1.25;
  margin-bottom: 1.2rem; max-width: 800px; text-shadow: 0 2px 12px rgba(0,0,0,0.3);
}
.hero-banner h1 .hl { color: var(--c-teal-100); }
.hero-banner .hero-desc {
  font-size: 1rem; color: rgba(255,255,255,0.78);
  max-width: 640px; margin-bottom: 1.8rem;
}
.hero-banner .hero-btns { display: flex; gap: 0.75rem; flex-wrap: wrap; }
.hero-banner .btn-h-primary {
  background: var(--c-coral); color: #fff; padding: 0.7rem 1.8rem;
  border-radius: 30px; font-size: 0.88rem; font-weight: 600;
  display: inline-flex; align-items: center; gap: 0.4rem;
  transition: 0.25s; border: 2px solid var(--c-coral);
}
.hero-banner .btn-h-primary:hover { background: transparent; color: var(--c-coral); transform: translateY(-2px); }
.hero-banner .btn-h-outline {
  background: transparent; color: #fff; padding: 0.7rem 1.8rem;
  border-radius: 30px; font-size: 0.88rem; font-weight: 600;
  border: 2px solid rgba(255,255,255,0.50);
  display: inline-flex; align-items: center; gap: 0.4rem; transition: 0.25s;
}
.hero-banner .btn-h-outline:hover { background: #fff; color: var(--c-ink); border-color: #fff; transform: translateY(-2px); }

/* ====== HERO INFO BAR ====== */
.hero-info-bar { background: var(--c-snow); padding: 1.2rem 0; border-bottom: 1px solid #e8ecf0; }
.hero-info-bar .hib-inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 1rem; }
.hero-info-bar .hib-title { font-size: 1.1rem; font-weight: 700; color: var(--c-ink); }
.hero-info-bar .hib-sub { font-size: 0.85rem; color: var(--c-ink-40); margin-top: 0.2rem; }
.hero-info-bar .hib-sub b { color: var(--c-teal-500); font-weight: 700; }
.hero-info-bar .hib-sub span { color: #d0d3d9; margin: 0 0.4rem; }
.hero-info-bar .hib-btns { display: flex; gap: 0.5rem; }
.hero-info-bar .hib-btns a {
  padding: 0.55rem 1.4rem; border-radius: 30px; font-size: 0.85rem; font-weight: 600;
  display: inline-flex; align-items: center; gap: 0.4rem; transition: 0.25s;
}
.hero-info-bar .hib-btns .b1 { background: var(--c-teal-500); color: #fff; border: 2px solid var(--c-teal-500); }
.hero-info-bar .hib-btns .b1:hover { background: var(--c-teal-700); border-color: var(--c-teal-700); }
.hero-info-bar .hib-btns .b2 { background: transparent; color: var(--c-ink-60); border: 2px solid #d0d5dd; }
.hero-info-bar .hib-btns .b2:hover { border-color: var(--c-teal-500); color: var(--c-teal-500); }

/* ====== About ====== */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: center; }
.about-grid .about-photo { border-radius: var(--radius-soft); overflow: hidden; position: relative; }
.about-grid .about-photo img { width: 100%; display: block; transition: transform 0.6s ease; }
.about-grid .about-photo:hover img { transform: scale(1.04); }
.about-grid .about-photo .ab-float {
  position: absolute; right: 1rem; bottom: 1rem;
  background: rgba(11,82,91,0.92); backdrop-filter: blur(8px); color: #fff;
  padding: 0.8rem 1.1rem; border-radius: var(--radius-round); max-width: 280px;
}
.about-grid .about-photo .ab-float strong { display: block; font-size: 0.78rem; color: var(--c-teal-100); margin-bottom: 0.15rem; }
.about-grid .about-photo .ab-float p { font-size: 0.72rem; margin: 0; opacity: 0.75; }
.about-side .ab-badge {
  display: inline-block; background: var(--c-coral); color: #fff;
  padding: 0.2rem 0.9rem; border-radius: 30px; font-size: 0.72rem;
  font-weight: 700; letter-spacing: 0.06em; margin-bottom: 1rem;
}
.about-side h3 { font-size: 1.4rem; font-weight: 700; color: var(--c-ink); margin-bottom: 0.5rem; }
.about-side .theme-line { color: var(--c-teal-500); font-size: 0.85rem; font-weight: 600; margin-bottom: 1rem; }
.about-side p { font-size: 0.88rem; color: var(--c-ink-60); margin-bottom: 0.7rem; }
.about-side p strong { color: var(--c-ink); }
.about-side .info-pills { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 1.3rem; }
.about-side .info-pills span {
  display: inline-flex; align-items: center; gap: 0.35rem;
  background: var(--c-ice); padding: 0.3rem 0.9rem; border-radius: 30px;
  font-size: 0.82rem; color: var(--c-ink-60); font-weight: 500;
}
.about-side .info-pills span i { color: var(--c-teal-500); }

/* ====== Exhibits ====== */
.exp-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.exp-col {
  background: var(--c-snow); border-radius: var(--radius-soft);
  padding: 1.8rem 1.5rem; border-top: 4px solid var(--c-teal-500); transition: 0.3s;
}
.exp-col:hover { transform: translateY(-6px); box-shadow: var(--shadow-m); }
.exp-col .ec-head { display: flex; align-items: center; gap: 0.6rem; padding-bottom: 0.9rem; margin-bottom: 0.9rem; border-bottom: 1px solid #e8ecf0; }
.exp-col .ec-head i { font-size: 1.4rem; color: var(--c-teal-500); }
.exp-col .ec-head h3 { font-size: 1.05rem; font-weight: 700; color: var(--c-ink); margin: 0; }
.exp-col .ec-grp { margin-bottom: 0.9rem; }
.exp-col .ec-grp-label { font-size: 0.74rem; font-weight: 700; color: var(--c-coral); text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 0.25rem; }
.exp-col .ec-grp p { font-size: 0.82rem; color: var(--c-ink-60); margin: 0; line-height: 1.6; }

/* ====== Stats ====== */
.tally-section { background: var(--c-ink); position: relative; overflow: hidden; }
.tally-section::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, var(--c-coral), var(--c-teal-300), var(--c-gold));
}
.tally-section .tile { text-align: center; padding: 2rem 1rem; position: relative; }
.tally-section .tile i { font-size: 1.6rem; color: rgba(255,255,255,0.18); margin-bottom: 0.5rem; display: block; }
.tally-section .tile .num { font-size: 2.3rem; font-weight: 800; color: #fff; line-height: 1.1; }
.tally-section .tile .lbl { font-size: 0.78rem; color: rgba(255,255,255,0.50); letter-spacing: 0.05em; margin-top: 0.25rem; }

/* ====== Core Buyers ====== */
.buyer-showcase { border-radius: var(--radius-soft); overflow: hidden; position: relative; box-shadow: var(--shadow-m); }
.buyer-showcase img { width: 100%; display: block; transition: transform 0.5s ease; }
.buyer-showcase:hover img { transform: scale(1.03); }

/* ====== Activities & Awards ====== */
.act-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 1.5rem; }
.act-list .act-row {
  display: flex; background: var(--c-snow); border-radius: var(--radius-round);
  overflow: hidden; margin-bottom: 1rem; border: 1px solid #e8ecf0; transition: 0.3s;
}
.act-list .act-row:last-child { margin-bottom: 0; }
.act-list .act-row:hover { border-color: var(--c-teal-300); box-shadow: var(--shadow-m); }
.act-list .act-img { width: 180px; min-height: 110px; flex-shrink: 0; overflow: hidden; }
.act-list .act-img img { width: 100%; height: 100%; object-fit: cover; }
.act-list .act-info { padding: 1rem 1.2rem; display: flex; flex-direction: column; justify-content: center; }
.act-list .act-info h5 { font-size: 0.95rem; font-weight: 700; color: var(--c-ink); margin-bottom: 0.3rem; }
.act-list .act-info p { font-size: 0.78rem; color: var(--c-ink-40); margin-bottom: 0.4rem; }
.btn-slim { display: inline-flex; align-items: center; gap: 0.3rem; font-size: 0.78rem; font-weight: 600; color: var(--c-teal-500); }
.btn-slim:hover { color: var(--c-teal-300); gap: 0.5rem; }
.award-list .award-row {
  display: flex; align-items: center; gap: 0.8rem; background: var(--c-snow);
  border-radius: var(--radius-round); padding: 0.9rem 1rem; margin-bottom: 0.75rem;
  border: 1px solid #e8ecf0; transition: 0.3s;
}
.award-list .award-row:last-child { margin-bottom: 0; }
.award-list .award-row:hover { border-color: var(--c-gold); box-shadow: var(--shadow-m); }
.award-list .award-ic {
  width: 38px; height: 38px; min-width: 38px; border-radius: 50%;
  background: var(--c-gold); color: #fff; display: flex; align-items: center;
  justify-content: center; font-size: 1rem;
}
.award-list .award-body h6 { font-size: 0.85rem; font-weight: 700; color: var(--c-ink); margin-bottom: 0.1rem; }
.award-list .award-body p { font-size: 0.72rem; color: var(--c-ink-40); margin: 0; }

/* ====== Audience Range ====== */
.audience-section { background: linear-gradient(180deg, var(--c-snow) 0%, var(--c-ice) 100%); }
.audience-stage { position: relative; max-width: 900px; margin: 0 auto; height: 600px; }
.audience-stage .aud-svg {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  width: 100%; height: 100%; pointer-events: none; z-index: 1;
}
.audience-stage .aud-svg .ring-outer {
  fill: none; stroke: var(--c-teal-100); stroke-width: 1; stroke-dasharray: 4 6;
  opacity: 0.4; animation: spinSlow 60s linear infinite; transform-origin: center;
}
.audience-stage .aud-svg .ring-mid { fill: none; stroke: var(--c-teal-300); stroke-width: 1.5; stroke-dasharray: 4 6; opacity: 0.5; }
.audience-stage .aud-svg .line-spoke {
  fill: none; stroke: var(--c-teal-300); stroke-width: 1.5; stroke-dasharray: 3 5;
  opacity: 0.35; transition: stroke 0.3s, stroke-width 0.3s, opacity 0.3s;
}
.audience-stage .aud-svg .line-spoke.active { stroke: var(--c-coral); stroke-width: 2.5; opacity: 1; }
.audience-stage .aud-svg .dot-spoke { fill: var(--c-teal-300); opacity: 0.7; transition: fill 0.3s, r 0.3s; }
.audience-stage .aud-svg .dot-spoke.active { fill: var(--c-coral); r: 7; }
@keyframes spinSlow { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
.aud-item {
  position: absolute; width: 260px; z-index: 2; opacity: 0;
  transform: translateY(20px); transition: opacity 0.5s ease, transform 0.5s ease;
}
.aud-item.in { opacity: 1; transform: translateY(0); }
.aud-item .aud-inner { display: flex; align-items: flex-start; gap: 0.7rem; cursor: pointer; }
.aud-item .aud-ico {
  width: 42px; height: 42px; min-width: 42px; border-radius: 50%;
  background: var(--c-snow); border: 1.5px solid var(--c-teal-300); color: var(--c-teal-500);
  display: flex; align-items: center; justify-content: center; font-size: 1.1rem; transition: 0.3s;
}
.aud-item:hover .aud-ico { background: var(--c-coral); border-color: var(--c-coral); color: #fff; transform: rotate(360deg) scale(1.1); }
.aud-item .aud-text h4 { font-size: 0.95rem; font-weight: 700; color: var(--c-ink); margin-bottom: 0.25rem; transition: color 0.3s; }
.aud-item:hover .aud-text h4 { color: var(--c-coral); }
.aud-item .aud-text p { font-size: 0.78rem; color: var(--c-ink-60); margin: 0; line-height: 1.5; }
.aud-item.pos-tl { top: 0; left: 0; }
.aud-item.pos-tr { top: 0; right: 0; text-align: right; }
.aud-item.pos-tl .aud-inner, .aud-item.pos-ml .aud-inner { flex-direction: row; }
.aud-item.pos-tr .aud-inner, .aud-item.pos-mr .aud-inner, .aud-item.pos-br .aud-inner { flex-direction: row-reverse; text-align: right; }
.aud-item.pos-ml { top: 50%; transform: translateY(-50%) translateY(20px); left: 0; }
.aud-item.pos-ml.in { transform: translateY(-50%) translateY(0); }
.aud-item.pos-mr { top: 50%; transform: translateY(-50%) translateY(20px); right: 0; }
.aud-item.pos-mr.in { transform: translateY(-50%) translateY(0); }
.aud-item.pos-bl { bottom: 0; left: 0; }
.aud-item.pos-br { bottom: 0; right: 0; text-align: right; }
.aud-center {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%) scale(0.5);
  width: 140px; height: 140px; border-radius: 50%;
  background: linear-gradient(135deg, var(--c-teal-700) 0%, var(--c-teal-500) 60%, var(--c-teal-300) 100%);
  color: #fff; display: flex; flex-direction: column; align-items: center; justify-content: center;
  font-size: 1.05rem; font-weight: 700; letter-spacing: 0.06em;
  box-shadow: 0 12px 40px rgba(13,115,119,0.35), inset 0 -8px 20px rgba(0,0,0,0.15);
  z-index: 3; opacity: 0; transition: opacity 0.6s ease, transform 0.6s ease;
}
.aud-center.in { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.aud-center::before {
  content: ''; position: absolute; inset: -10px; border-radius: 50%;
  border: 1px dashed rgba(13,115,119,0.4); animation: spinSlow 20s linear infinite;
}
.aud-center::after {
  content: ''; position: absolute; inset: -22px; border-radius: 50%;
  border: 1px dashed rgba(13,115,119,0.2); animation: spinSlow 35s linear infinite reverse;
}
.aud-center small { display: block; font-size: 0.65rem; font-weight: 400; opacity: 0.75; margin-top: 0.15rem; letter-spacing: 0.1em; }

/* ====== Conference ====== */
.conf-section { background: linear-gradient(135deg, #0b525b 0%, #0d7377 100%); padding: 0; }
.conf-section .sec-h h2 { color: #fff; }
.conf-section .sec-h h2 .hl { color: var(--c-teal-100); }
.conf-section .sec-h p { color: rgba(255,255,255,0.55); }
.conf-section .sec-h h2::before, .conf-section .sec-h h2::after { background: rgba(255,255,255,0.3); }
.conf-section .conf-wrap { padding: 3.5rem 0 5rem; }
.conf-banner {
  position: relative; border-radius: var(--radius-soft); overflow: hidden;
  max-width: 1000px; margin: 0 auto; box-shadow: 0 15px 50px rgba(0,0,0,0.3);
}
.conf-banner img { width: 100%; display: block; transition: 0.4s; }
.conf-banner .conf-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(11,82,91,0.85) 0%, rgba(11,82,91,0.45) 50%, rgba(0,0,0,0.2) 100%);
}
.conf-banner .conf-info { position: absolute; bottom: 1.5rem; left: 1.8rem; right: 1.8rem; color: #fff; z-index: 2; }
.conf-banner .conf-info h4 { font-size: 1.1rem; font-weight: 700; margin-bottom: 0.3rem; }
.conf-banner .conf-info p { font-size: 0.85rem; opacity: 0.85; margin: 0; cursor: pointer; }
.conf-banner .conf-info p:hover { opacity: 1; }
.conf-banner .conf-info i { margin-left: 0.3rem; }

/* ====== Contact ====== */
.contact-strip { background: var(--c-snow); }
.contact-bar { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
.contact-bar .c-cell {
  display: flex; align-items: center; gap: 0.9rem; padding: 1.2rem 1.4rem;
  border-right: 1px solid #e8ecf0; transition: 0.25s;
}
.contact-bar .c-cell:last-child { border-right: none; }
.contact-bar .c-cell:hover { background: var(--c-ice); }
.contact-bar .c-cell .c-ic {
  width: 40px; height: 40px; min-width: 40px; border-radius: 50%;
  background: var(--c-teal-500); color: #fff; display: flex; align-items: center;
  justify-content: center; font-size: 1rem;
}
.contact-bar .c-cell .c-tx strong { display: block; font-size: 0.88rem; color: var(--c-ink); font-weight: 700; }
.contact-bar .c-cell .c-tx small { font-size: 0.74rem; color: var(--c-ink-40); }

/* ====== Responsive ====== */
@media (max-width: 991px) {
  .hero-banner h1 { font-size: 1.9rem; }
  .about-grid { grid-template-columns: 1fr; gap: 1.5rem; }
  .exp-cols { grid-template-columns: 1fr; }
  .act-grid { grid-template-columns: 1fr; }
  .contact-bar { grid-template-columns: repeat(2, 1fr); }
  .contact-bar .c-cell:nth-child(2) { border-right: none; }
  .contact-bar .c-cell { border-bottom: 1px solid #e8ecf0; }
  .audience-stage { height: 720px; }
  .aud-item { width: 220px; }
}
@media (max-width: 768px) {
  .segment, .conf-section .conf-wrap { padding: 2.5rem 0; }
  .sec-h { margin-bottom: 1.8rem; }
  .sec-h h2 { font-size: 1.4rem; }
  .hero-banner { height: 65vh; min-height: 420px; }
  .hero-banner h1 { font-size: 1.5rem; }
  .hero-banner .hero-desc { font-size: 0.85rem; }
  .hero-info-bar .hib-inner { flex-direction: column; align-items: flex-start; }
  .act-list .act-row { flex-direction: column; }
  .act-list .act-img { width: 100%; height: 140px; }
  .contact-bar { grid-template-columns: 1fr; }
  .contact-bar .c-cell { border-right: none; border-bottom: 1px solid #e8ecf0; }
  .audience-stage { height: auto; }
  .aud-item { position: static; width: 100%; margin-bottom: 1rem; transform: none !important; }
  .aud-item .aud-inner { flex-direction: row !important; text-align: left !important; }
  .aud-center { position: relative; top: auto; left: auto; transform: none; margin: 1.5rem auto; }
  .aud-center.in { transform: none; }
  .aud-svg { display: none; }
}