/* =========================================================================
   portal.css —— 门户分流页（对外，市场/客户看的就是这一页）
   视觉方向：深灰石墨 + 工程网格 + 黄铜信号色，像一台「演示控制台」而不是模板站
   ========================================================================= */

/* ---------- 背景层 ---------- */
.bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}
.bg__grid {
  position: absolute;
  inset: -10% -10% -10% -10%;
  background-image:
    linear-gradient(to right, rgba(20, 32, 26, 0.07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(20, 32, 26, 0.07) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(120% 85% at 50% -10%, #000 0%, transparent 72%);
  mask-image: radial-gradient(120% 85% at 50% -10%, #000 0%, transparent 72%);
}
.bg__glow {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(760px 420px at 12% -6%, rgba(162, 112, 26, 0.13), transparent 65%),
    radial-gradient(900px 520px at 92% 4%, rgba(58, 133, 116, 0.10), transparent 70%),
    radial-gradient(1200px 700px at 50% 108%, rgba(206, 189, 155, 0.45), transparent 70%);
}
.bg__noise {
  position: absolute;
  inset: 0;
  opacity: 0.022;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='3'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
}
.bg__rail {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 28px;
  width: 1px;
  background: linear-gradient(to bottom, transparent, var(--line-mid) 12%, var(--line-mid) 88%, transparent);
}
.bg__rail::after {
  content: '';
  position: absolute;
  top: 0;
  left: -3px;
  width: 7px;
  height: 100%;
  background: repeating-linear-gradient(
    to bottom,
    var(--line-mid) 0 1px,
    transparent 1px 14px
  );
  -webkit-mask-image: linear-gradient(to bottom, transparent, #000 15%, #000 85%, transparent);
  mask-image: linear-gradient(to bottom, transparent, #000 15%, #000 85%, transparent);
}

/* ---------- 顶栏 ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--ink-900) 88%, transparent);
  backdrop-filter: blur(14px) saturate(1.2);
}
.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  height: 62px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  min-width: 0;
}
.brand__mark {
  width: 26px;
  height: 26px;
  color: var(--brass);
  flex: none;
}
.brand__name {
  font-weight: 700;
  font-size: 0.9375rem;
  letter-spacing: 0.16em;
}
.brand__sep {
  width: 1px;
  height: 14px;
  background: var(--line-hard);
}
.brand__sub {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.6875rem;
  letter-spacing: 0.26em;
  color: var(--muted);
  white-space: nowrap;
}
.topbar__right {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}
.counter {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  color: var(--muted);
}
.counter b {
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

/* ---------- 主体 ---------- */
main {
  position: relative;
  z-index: 1;
  flex: 1 0 auto;
}

/* Hero */
.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: end;
  padding: clamp(3.5rem, 9vw, 7.5rem) 0 clamp(2.5rem, 5vw, 4rem);
}
.hero__ghost {
  position: absolute;
  top: clamp(2rem, 6vw, 4.5rem);
  right: calc(300px + clamp(2rem, 5vw, 5rem));
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(6rem, 16vw, 13rem);
  line-height: 0.75;
  letter-spacing: 0.02em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(20, 32, 26, 0.075);
  pointer-events: none;
  user-select: none;
}
.hero__eyebrow {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1.5rem;
}
.hero__eyebrow .rule {
  width: 34px;
  height: 1px;
  background: var(--brass);
  flex: none;
}
.hero__title {
  font-size: clamp(3.1rem, 8.4vw, 6rem);
  line-height: 0.98;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 1.4rem;
}
.hero__title em {
  font-style: normal;
  color: var(--brass);
}
.hero__lede {
  max-width: 46ch;
  color: var(--text-soft);
  font-size: clamp(0.9375rem, 1.2vw, 1.0625rem);
  line-height: 1.85;
}
.hero__lede strong {
  color: var(--text);
  font-weight: 600;
  box-shadow: inset 0 -1px 0 var(--brass);
}

/* 右侧规格表 */
.spec {
  border-top: 1px solid var(--line-mid);
  padding-top: 0.35rem;
}
.spec__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.62rem 0;
  border-bottom: 1px solid var(--line);
}
.spec__row dt {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.625rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted-dim);
}
.spec__row dd {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-soft);
  text-align: right;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.spec__row dd b { color: var(--brass); font-weight: 600; }

/* ---------- 项目牌 ---------- */
.deck {
  padding-bottom: clamp(3rem, 6vw, 5rem);
}
.deck__head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
  padding-bottom: 1.1rem;
  border-bottom: 1px solid var(--line-mid);
  margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
  flex-wrap: wrap;
}
.deck__title {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.deck__title span {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  color: var(--muted-dim);
}
.deck__tools {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: clamp(0.9rem, 1.4vw, 1.25rem);
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 268px;
  padding: 1.35rem 1.35rem 1.2rem;
  border: 1px solid rgba(20, 32, 26, 0.12);
  border-radius: var(--r-md);
  background: linear-gradient(180deg, #ffffff 0%, #fcfaf5 100%);
  box-shadow: 0 1px 2px rgba(20, 32, 26, 0.04);
  overflow: hidden;
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease),
              box-shadow 0.25s var(--ease), background-color 0.25s var(--ease);
}
/* 四角刻度线，hover 时张开 */
.card::before,
.card::after {
  content: '';
  position: absolute;
  width: 12px;
  height: 12px;
  opacity: 0;
  transition: opacity 0.25s var(--ease), width 0.25s var(--ease), height 0.25s var(--ease);
  pointer-events: none;
}
.card::before {
  top: 6px; left: 6px;
  border-top: 1px solid var(--brass);
  border-left: 1px solid var(--brass);
}
.card::after {
  bottom: 6px; right: 6px;
  border-bottom: 1px solid var(--brass);
  border-right: 1px solid var(--brass);
}
.card:hover,
.card:focus-within {
  border-color: rgba(162, 112, 26, 0.45);
  transform: translateY(-3px);
  box-shadow: 0 20px 42px -26px rgba(49, 39, 18, 0.45), 0 1px 2px rgba(20, 32, 26, 0.06);
}
.card:hover::before,
.card:hover::after,
.card:focus-within::before,
.card:focus-within::after {
  opacity: 1;
  width: 22px;
  height: 22px;
}
/* 顶部扫描线 */
.card__scan {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--brass), transparent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.55s var(--ease);
}
.card:hover .card__scan,
.card:focus-within .card__scan { transform: scaleX(1); }

.card__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.1rem;
}
.card__idx {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 2.35rem;
  line-height: 0.85;
  letter-spacing: 0.01em;
  color: transparent;
  -webkit-text-stroke: 1px var(--line-hard);
  transition: -webkit-text-stroke-color 0.25s var(--ease);
}
.card:hover .card__idx { -webkit-text-stroke-color: rgba(162, 112, 26, 0.85); }

.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.28rem 0.55rem;
  border: 1px solid var(--line-mid);
  border-radius: 999px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.625rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.78);
  white-space: nowrap;
}
.pill--live { color: var(--live); border-color: rgba(30, 122, 77, 0.32); }
.pill--idle { color: var(--brass); border-color: rgba(162, 112, 26, 0.34); }

.card__name {
  font-size: 1.1875rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.35;
  margin-bottom: 0.55rem;
}
.card__summary {
  color: var(--muted);
  font-size: 0.8438rem;
  line-height: 1.75;
  margin-bottom: 1.15rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.9rem;
  margin-top: auto;
  padding-top: 0.9rem;
  border-top: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--muted-dim);
}
.card__meta b { color: var(--muted); font-weight: 400; }

.card__go {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 0.85rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--line);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color 0.2s var(--ease);
}
.card__arrow {
  font-size: 1rem;
  line-height: 1;
  transition: transform 0.25s var(--ease), color 0.2s var(--ease);
}
.card:hover .card__go { color: var(--brass); }
.card:hover .card__arrow { transform: translate(3px, -3px); }
.card--idle .card__go { color: var(--muted-dim); }
.card--idle:hover .card__go { color: var(--brass); }

/* 整张卡片可点：把链接铺满 */
.card__hit {
  position: absolute;
  inset: 0;
  z-index: 2;
}

/* 预留接入位（项目少于 3 个时补一块，避免版面太空） */
.card--slot {
  align-items: center;
  justify-content: center;
  gap: .35rem;
  text-align: center;
  border-style: dashed;
  border-color: rgba(20, 32, 26, 0.14);
  background: rgba(255, 255, 255, 0.45);
  color: var(--muted-dim);
  pointer-events: none;
}
.card--slot .slot__plus {
  font-family: var(--font-display);
  font-size: 1.5rem;
  line-height: 1;
  color: rgba(162, 112, 26, 0.5);
  margin-bottom: .3rem;
}
.card--slot .slot__t {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: .6875rem;
  letter-spacing: .2em;
  text-transform: uppercase;
}
.card--slot .slot__d { font-size: .75rem; }

/* 空态 / 骨架 */
.card--skeleton {
  border-style: dashed;
  animation: skeleton 1.6s ease-in-out infinite;
}
@keyframes skeleton {
  0%, 100% { opacity: 0.55; }
  50% { opacity: 0.85; }
}
.empty {
  grid-column: 1 / -1;
  padding: 3rem 1.5rem;
  border: 1px dashed var(--line-mid);
  border-radius: var(--r-md);
  text-align: center;
  color: var(--muted);
}

/* ---------- 页脚 ---------- */
.site-foot {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--line);
  padding: 2.2rem 0 3rem;
}
.site-foot__inner {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
  color: var(--muted-dim);
  font-size: 0.75rem;
  letter-spacing: 0.02em;
}
.site-foot__inner b { color: var(--muted); font-weight: 600; letter-spacing: 0.08em; }
.site-foot a { border-bottom: 1px solid transparent; transition: color 0.2s, border-color 0.2s; }
.site-foot a:hover { color: var(--brass); border-color: var(--brass); }
.site-foot__meta { display: flex; gap: 1.1rem; flex-wrap: wrap; font-family: var(--font-mono); }

/* ---------- 入场动画 ---------- */
.reveal {
  animation: rise 0.6s var(--ease) both;
  animation-delay: var(--d, 0ms);
}
@keyframes rise {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* 兜底：动画万一没跑完（后台标签页/异常引擎），2 秒后强制显示，绝不让内容停在透明态 */
.settled .reveal {
  animation: none !important;
  opacity: 1 !important;
  transform: none !important;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1000px) {
  .hero { grid-template-columns: 1fr; align-items: start; }
  .hero__ghost { display: none; }
  .spec { max-width: 380px; }
}
@media (max-width: 640px) {
  :root { --shell: calc(100vw - 2.2rem); }
  .bg__rail { display: none; }
  .brand__sub, .counter { display: none; }
  .topbar__inner { height: 56px; }
  .cards { grid-template-columns: 1fr; }
  .card { min-height: 0; }
  .hero { padding-top: 2.6rem; }
}