/*  融创 1979 发布会 · 展示页
    深色沉浸长页，无导航；仅用于作品展示，可直接双击 index.html 打开  */

:root{
  --bg:#08111C;
  --bg-2:#0A1522;
  --ink:rgba(255,255,255,.94);
  --ink-2:rgba(255,255,255,.60);
  --ink-3:rgba(255,255,255,.36);
  --line:rgba(255,255,255,.09);
  --acc:#D8452C;
  --mono:"SFMono-Regular",Menlo,Consolas,"Roboto Mono",ui-monospace,monospace;
  --sans:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Helvetica Neue",Arial,sans-serif;
  --ease:cubic-bezier(.22,1,.36,1);
  --pad:clamp(20px,5vw,72px);
  --wrap:1560px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);overflow-x:hidden;
  font-family:var(--sans);font-size:16px;line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img,video{display:block;max-width:100%}
h1,h2,h3,p{margin:0}
ul{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--pad)}
.mono{font-family:var(--mono);letter-spacing:.2em;text-transform:uppercase;font-size:11px}

/* ---------------- 封面 ---------------- */
.hero{position:relative;height:100svh;min-height:560px;overflow:hidden;display:flex;align-items:flex-end}
.hero>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center 42%}
.hero::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(8,17,28,.72) 0%,rgba(8,17,28,.18) 32%,rgba(8,17,28,.80) 78%,var(--bg) 100%);
}
.hero-in{position:relative;z-index:2;width:100%;padding-bottom:clamp(34px,7vh,80px)}
.hero .kicker{color:var(--ink-2);display:flex;align-items:center;gap:12px}
.hero .kicker::before{content:"";width:34px;height:1px;background:var(--acc)}
.hero h1{
  margin-top:20px;font-size:clamp(30px,4.6vw,72px);line-height:1.12;
  font-weight:800;letter-spacing:-.03em;max-width:22em;
}
.hero .sub{margin-top:16px;font-size:clamp(15px,1.3vw,21px);color:var(--ink-2);letter-spacing:.06em}
.facts{
  display:flex;flex-wrap:wrap;gap:10px 34px;margin-top:34px;
  padding-top:22px;border-top:1px solid var(--line);
}
.facts li{display:flex;flex-direction:column;gap:4px;min-width:88px}
.facts b{font-weight:600;font-size:15px}
.facts span{color:var(--ink-3);font-size:11px;font-family:var(--mono);letter-spacing:.18em;text-transform:uppercase}
.facts b.ph{color:var(--ink-3);font-weight:400;font-size:14px}
.scrollcue{
  position:absolute;left:50%;bottom:22px;transform:translateX(-50%);z-index:3;
  color:var(--ink-3);font-family:var(--mono);font-size:10px;letter-spacing:.28em;
  animation:bob 2.2s var(--ease) infinite;
}
@keyframes bob{0%,100%{transform:translate(-50%,0);opacity:.5}50%{transform:translate(-50%,7px);opacity:1}}

/* ---------------- 区块通用 ---------------- */
.sec{padding:clamp(64px,9vh,132px) 0;border-top:1px solid var(--line)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;flex-wrap:wrap;margin-bottom:clamp(28px,4vh,52px)}
.sec-head .idx{color:var(--acc);font-family:var(--mono);font-size:12px;letter-spacing:.24em}
.sec-head h2{margin-top:12px;font-size:clamp(24px,2.6vw,42px);font-weight:800;letter-spacing:-.025em;line-height:1.16}
.sec-head p{margin-top:12px;color:var(--ink-2);font-size:15px;max-width:46em}
.sec-head .count{color:var(--ink-3);font-family:var(--mono);font-size:11px;letter-spacing:.2em;white-space:nowrap}

/* 出场动画 */
.rv{opacity:0;transform:translateY(26px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.rv.in{opacity:1;transform:none}

/* ---------------- 01 现场 + 邀请函：错落瀑布 ---------------- */
.masonry{display:flex;gap:14px;align-items:flex-start}
.masonry .col{flex:1 1 0;min-width:0;display:flex;flex-direction:column;gap:14px}
.masonry .cell{
  position:relative;overflow:hidden;margin:0;
  border-radius:14px;background:rgba(255,255,255,.03);cursor:zoom-in;
}
.masonry .cell img{width:100%;height:auto;transition:transform .7s var(--ease)}
.masonry .cell:hover img{transform:scale(1.035)}
.masonry .cell figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:26px 16px 13px;
  font-size:12.5px;color:rgba(255,255,255,.9);
  background:linear-gradient(180deg,transparent,rgba(4,9,16,.88));
  opacity:0;transform:translateY(8px);transition:.45s var(--ease);
  pointer-events:none;
}
.masonry .cell:hover figcaption{opacity:1;transform:none}
.cell .tag,.h5row .tag{
  position:absolute;left:12px;top:12px;padding:3px 9px;border-radius:99px;
  background:rgba(4,9,16,.66);backdrop-filter:blur(6px);
  font-family:var(--mono);font-size:10px;letter-spacing:.16em;color:rgba(255,255,255,.8);
}

/* 微信邀请函 H5：原图横排六页，整条展示（不逐页切开） */
.h5row{margin-top:14px}
.h5row .h5cell{
  position:relative;overflow:hidden;margin:0;
  border-radius:14px;background:rgba(255,255,255,.03);cursor:zoom-in;
}
.h5row .h5cell img{width:100%;height:auto;transition:transform .7s var(--ease)}
.h5row .h5cell:hover img{transform:scale(1.02)}
.h5row .h5cell figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:26px 16px 13px;
  font-size:12.5px;color:rgba(255,255,255,.9);
  background:linear-gradient(180deg,transparent,rgba(4,9,16,.88));
  opacity:0;transform:translateY(8px);transition:.45s var(--ease);
  pointer-events:none;
}
.h5row .h5cell:hover figcaption{opacity:1;transform:none}

/* ---------------- 03 汇报 PPT：逐页纵排 ---------------- */
.slides{display:flex;flex-direction:column;gap:clamp(10px,1.4vw,20px)}
.slide{
  position:relative;border-radius:12px;overflow:hidden;cursor:zoom-in;
  background:#04070C;border:1px solid var(--line);
}
.slide img{width:100%;height:auto}
.slide .no{
  position:absolute;left:10px;bottom:10px;padding:3px 10px;border-radius:99px;
  background:rgba(4,9,16,.6);backdrop-filter:blur(6px);
  font-family:var(--mono);font-size:10.5px;letter-spacing:.16em;color:rgba(255,255,255,.72);
  opacity:0;transition:.4s var(--ease);
}
.slide:hover .no{opacity:1}

/* ---------------- 02 动效片段 ---------------- */
.clips{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.clip{
  position:relative;border-radius:14px;overflow:hidden;background:#04070C;
  border:1px solid var(--line);aspect-ratio:16/9;
}
.clip video,.clip img.poster{position:absolute;inset:0;width:100%;height:100%;object-fit:contain}
.clip .play{
  position:absolute;inset:0;display:grid;place-items:center;cursor:pointer;border:0;background:transparent;
}
.clip .play span{
  width:56px;height:56px;border-radius:50%;display:grid;place-items:center;
  border:1px solid rgba(255,255,255,.5);background:rgba(6,12,20,.42);backdrop-filter:blur(8px);
  transition:.4s var(--ease);
}
.clip .play span::after{
  content:"";width:0;height:0;margin-left:4px;
  border-left:14px solid rgba(255,255,255,.95);
  border-top:9px solid transparent;border-bottom:9px solid transparent;
}
.clip .play:hover span{background:rgba(216,69,44,.86);border-color:transparent;transform:scale(1.06)}
.clip .cap{
  position:absolute;left:0;right:0;bottom:0;padding:30px 14px 11px;
  font-family:var(--mono);font-size:10.5px;letter-spacing:.16em;color:rgba(255,255,255,.8);
  background:linear-gradient(180deg,transparent,rgba(4,9,16,.85));pointer-events:none;
}

/* ---------------- 结尾 ---------------- */
.end{padding:clamp(70px,10vh,140px) 0 90px;border-top:1px solid var(--line);text-align:center}
.end .mono{color:var(--ink-3)}
.end h3{margin-top:18px;font-size:clamp(20px,2.2vw,34px);font-weight:800;letter-spacing:-.02em}
.end p{margin-top:14px;color:var(--ink-2);font-size:14.5px}
.top{
  display:inline-block;margin-top:36px;padding:11px 26px;border:1px solid var(--line);
  border-radius:99px;font-family:var(--mono);font-size:11px;letter-spacing:.2em;
  color:var(--ink-2);transition:.4s var(--ease);
}
.top:hover{border-color:var(--acc);color:#fff}

/* ---------------- 灯箱 ---------------- */
.lb{
  position:fixed;inset:0;z-index:99;display:none;
  background:rgba(3,6,11,.96);backdrop-filter:blur(3px);
}
.lb.on{display:flex;align-items:center;justify-content:center}
.lb img{max-width:96vw;max-height:88vh;width:auto;height:auto;object-fit:contain;border-radius:6px}
.lb .x,.lb .pv,.lb .nx{
  position:absolute;border:1px solid rgba(255,255,255,.18);background:rgba(10,18,28,.7);
  color:#fff;width:46px;height:46px;border-radius:50%;cursor:pointer;font-size:17px;
  display:grid;place-items:center;transition:.3s var(--ease);
}
.lb .x{top:22px;right:22px}
.lb .pv{left:22px;top:50%;margin-top:-23px}
.lb .nx{right:22px;top:50%;margin-top:-23px}
.lb .x:hover,.lb .pv:hover,.lb .nx:hover{background:var(--acc);border-color:transparent}
.lb .cnt{
  position:absolute;left:50%;bottom:20px;transform:translateX(-50%);
  font-family:var(--mono);font-size:11px;letter-spacing:.22em;color:var(--ink-3);
}

/* ---------------- 响应式 ---------------- */
@media (max-width:1100px){
  .masonry{columns:2}
  .clips{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:720px){
  .masonry{columns:1}
  .clips{grid-template-columns:1fr}
  .hero{height:auto;min-height:0;padding-top:34vh;padding-bottom:6vh}
  .facts{gap:14px 22px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:14px}
  /* 六页横排在小屏会看不清 → 允许左右滑动查看整条 */
  .h5row{overflow-x:auto;-webkit-overflow-scrolling:touch}
  .h5row .h5cell{min-width:1000px}
}
@media (prefers-reduced-motion:reduce){
  .rv{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* ← 返回作品集（2026-10-21 古要求加，固定左上） */
.back-home{
  position:fixed;top:22px;left:26px;z-index:60;
  display:inline-flex;align-items:center;height:42px;padding:0 22px;
  border:1px solid rgba(255,255,255,.22);border-radius:999px;
  font-size:14px;color:var(--ink-2);letter-spacing:.04em;text-decoration:none;
  background:rgba(8,11,18,.45);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  transition:border-color .35s var(--ease),color .35s var(--ease);
}
.back-home:hover{border-color:var(--acc);color:var(--ink)}