/* ============================================================
   HERO 03 — TYPE WALL v2 / 精修巨字墙
   (按 hero-03-typewall.html 结构实现;AIGC 主色为纯墨黑)
   ============================================================ */

/* --- 背景层:全屏视频 + 暗化 + 噪点 --- */
.hc-hero--typewall {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--color-ink);
  color: var(--color-paper);
}
.typewall-bg {
  position: absolute; inset: 0; z-index: 0;
}
.twv-video {
  width: 100%; height: 100%; object-fit: cover;
  filter: saturate(0.85) contrast(1.02);
}
.typewall-overlay {
  position: absolute; inset: 0; z-index: 1;
  background:
    linear-gradient(180deg, rgba(20,16,10,0.55) 0%, rgba(20,16,10,0.28) 35%, rgba(20,16,10,0.45) 100%);
}
.typewall-noise {
  position: absolute; inset: 0; z-index: 2;
  opacity: 0.14;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
  mix-blend-mode: overlay;
  pointer-events: none;
}

/* --- 顶栏:品牌 + 元信息 --- */
.tw-topbar {
  position: relative; z-index: 5;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.4rem 2.4rem;
  font-family: var(--font-mono);
  font-size: 0.78rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--color-paper);
  border-bottom: 1px solid rgba(255,255,255,0.16);
}
.tw-brand { font-weight: 700; }
.tw-brand i { font-style: normal; color: var(--color-red); margin: 0 0.3em; }
.tw-meta { opacity: 0.72; }

/* --- 主舞台 --- */
.tw-stage {
  position: relative; z-index: 5;
  flex: 1;
  display: flex; align-items: center; justify-content: space-between;
  gap: 2rem;
  padding: 0 2.4rem;
  max-width: 1480px; width: 100%;
  margin: 0 auto;
}

/* 左:主内容 */
.tw-main { flex: 1; max-width: 900px; }
.tw-eyebrow {
  display: flex; align-items: center; gap: 1rem;
  font-family: var(--font-mono);
  font-size: 0.72rem; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--color-paper);
  opacity: 0.82;
  margin: 0 0 1.4rem;
}
.tw-eyebrow-line {
  display: inline-block; width: 72px; height: 1px;
  background: var(--color-red);
}

.tw-title {
  font-family: 'The Bold Font', 'Archivo Black', var(--font-display);
  font-weight: 900;
  font-stretch: 125%;
  font-size: clamp(6rem, 17vw, 15rem);
  line-height: 0.86;
  letter-spacing: -0.02em;
  color: var(--color-paper);          /* 大字墙底色 */
  margin: 0;
  text-shadow:
    8px 8px 0 rgba(0,0,0,0.35);
  animation: tw-in 900ms var(--ease-out) forwards;
  opacity: 0;
}
.tw-title-dot {
  color: var(--color-red);
  display: inline-block;
  animation: tw-dot 1.6s ease-in-out infinite;
}
.tw-title-cn {
  display: block;
  font-family: var(--font-display-cn);
  font-weight: 900;
  font-size: clamp(1.1rem, 2.4vw, 1.6rem);
  letter-spacing: 0.14em;
  color: var(--color-paper);
  opacity: 0.9;
  margin-top: 0.9rem;
}

/* 分隔线 */
.tw-rule {
  width: 100%; max-width: 420px; height: 3px;
  background: var(--color-red);
  margin: 1.8rem 0 1.4rem;
  box-shadow: 4px 4px 0 rgba(0,0,0,0.3);
}

/* 描述 */
.tw-desc {
  font-family: var(--font-body);
  font-size: clamp(0.95rem, 1.5vw, 1.1rem);
  line-height: 1.85;
  color: var(--color-paper);
  opacity: 0.88;
  max-width: 520px;
  margin: 0 0 2.2rem;
}

/* 按钮 */
.tw-actions { display: flex; gap: 1rem; flex-wrap: wrap; }
.tw-btn {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 0.9rem; letter-spacing: 0.06em;
  padding: 0.9rem 1.6rem;
  text-decoration: none;
  transition: transform 140ms ease, box-shadow 140ms ease, background 140ms ease;
  display: inline-flex; align-items: center; gap: 0.5rem;
}
.tw-btn--solid {
  background: var(--color-red); color: var(--color-paper);
  border: 2px solid var(--color-red);
  box-shadow: 4px 4px 0 rgba(0,0,0,0.35);
}
.tw-btn--line {
  background: transparent; color: var(--color-paper);
  border: 2px solid var(--color-paper);
  box-shadow: 4px 4px 0 rgba(0,0,0,0.35);
}
.tw-btn:hover { transform: translate(-2px,-2px); }
.tw-btn--solid:hover { box-shadow: 6px 6px 0 rgba(0,0,0,0.35); background: var(--color-red-soft); }
.tw-btn--line:hover { box-shadow: 6px 6px 0 rgba(0,0,0,0.35); background: rgba(255,255,255,0.1); }
.tw-btn:active { transform: translate(2px,2px); box-shadow: 1px 1px 0 rgba(0,0,0,0.35); }

/* 右:侧栏 */
.tw-side {
  display: flex; flex-direction: column; align-items: flex-end; gap: 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.7rem; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--color-paper);
  opacity: 0.7;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  flex-shrink: 0;
}
.tw-side-index { font-size: 2.6rem; font-weight: 700; color: var(--color-red); letter-spacing: 0; }
.tw-side-rule { width: 1px; height: 60px; background: var(--color-paper); opacity: 0.5; }

/* --- 底部信息 --- */
.tw-bottom {
  position: relative; z-index: 5;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.2rem 2.4rem;
  font-family: var(--font-mono);
  font-size: 0.72rem; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--color-paper);
  border-top: 1px solid rgba(255,255,255,0.16);
}
.tw-foot-left { display: flex; gap: 1.6rem; opacity: 0.8; }
.tw-foot-right { display: flex; gap: 1.6rem; align-items: center; }
.tw-contact {
  color: var(--color-paper);
  text-decoration: none;
  font-weight: 700;
  padding-bottom: 2px;
  border-bottom: 2px solid var(--color-red);
}
.tw-contact:hover { color: var(--color-red-soft); }

/* --- 动画 --- */
@keyframes tw-in {
  0%   { opacity: 0; transform: translateY(26px); filter: blur(3px); }
  60%  { opacity: 1; filter: blur(0); }
  100% { opacity: 1; transform: translateY(0); }
}
@keyframes tw-dot {
  0%, 100% { transform: scale(1); }
  50%      { transform: scale(1.25); }
}

/* --- 移动端适配 --- */
@media (max-width: 768px) {
  .tw-topbar { padding: 1rem 1.2rem; font-size: 0.68rem; }
  .tw-stage {
    flex-direction: column; align-items: flex-start;
    justify-content: center;
    padding: 2.4rem 1.2rem;
  }
  .tw-title { font-size: clamp(4.4rem, 20vw, 7rem); }
  .tw-side { display: none; }
  .tw-bottom { padding: 1rem 1.2rem; font-size: 0.62rem; }
  .tw-foot-left { flex-direction: column; gap: 0.3rem; }
}

/* ---- QR hover popover ---- */
.tw-btn--qr { position: relative; cursor: default; }
.tw-qr-pop {
  position: absolute; bottom: calc(100% + 14px); left: 50%;
  transform: translateX(-50%) translateY(8px);
  width: 172px; padding: 8px; background: var(--color-paper, #fff);
  border: 2px solid var(--color-ink, #111);
  box-shadow: 6px 6px 0 var(--color-ink, #111);
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity .18s ease, transform .18s ease, visibility .18s ease;
  z-index: 80;
}
.tw-qr-pop img { display: block; width: 100%; height: auto; }
.tw-qr-pop::after {
  content: ""; position: absolute; top: 100%; left: 50%;
  transform: translateX(-50%);
  border: 8px solid transparent; border-top-color: var(--color-ink, #111);
}
.tw-btn--qr:hover .tw-qr-pop,
.tw-btn--qr:focus .tw-qr-pop,
.tw-btn--qr:focus-visible .tw-qr-pop {
  opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0);
}
.ch-stamp--qr { position: relative; cursor: default; }
.ch-stamp--qr:hover .tw-qr-pop,
.ch-stamp--qr:focus .tw-qr-pop,
.ch-stamp--qr:focus-visible .tw-qr-pop {
  opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0);
}

/* ---- Warp Text (ReactBits port) ---- */
.tw-warp { position: relative; display: inline-block; }
.tw-warp-canvas {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  display: block; pointer-events: none;
}
.tw-warp.warp-on .tw-warp-ghost { color: transparent; text-shadow: none; }