/* ============================================================
   液态玻璃设计系统 · Liquid Glass Design System
   暮紫星空配色 · 情侣专属站通用组件
   用法：<div class="glass">…</div>  即得一块液态玻璃
   ============================================================ */

:root{
  /* — 暮紫星空色板 — */
  --void:#0a0616;          /* 夜空底 */
  --night:#150c2e;         /* 深蓝紫 */
  --dusk:#2a1550;          /* 暮紫 */
  --violet:#7c4dff;        /* 主紫 */
  --magenta:#e05fa8;       /* 玫红 */
  --blush:#ffb3c6;         /* 腮红粉 */
  --gold:#ffd79a;          /* 暖金（高光用） */
  --ice:#c9b8ff;           /* 冰紫文字 */
  --txt:#f4eeff;
  --muted:#a294c9;

  /* — 玻璃参数（改这里即可全局调质感） — */
  --g-blur:22px;
  --g-sat:180%;
  --g-r:28px;
  --g-border:rgba(255,255,255,.24);
  --g-fill:linear-gradient(135deg, rgba(255,255,255,.16) 0%, rgba(255,255,255,.06) 45%, rgba(160,120,255,.10) 100%);
  --g-shadow:0 26px 70px rgba(8,3,24,.6), 0 4px 14px rgba(8,3,24,.35);

  --ease-out:cubic-bezier(.16,1,.3,1);
  --ease-liquid:cubic-bezier(.34,1.4,.44,1);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:var(--void); color:var(--txt);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,"Helvetica Neue",sans-serif;
  -webkit-font-smoothing:antialiased; overflow-x:hidden;
  min-height:100vh;
}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;border:none;background:none;cursor:pointer}
.serif{font-family:Georgia,"Songti SC","STSong",serif}

/* ============ 1. 星空背景层 ============ */
.sky{position:fixed;inset:0;z-index:-3;overflow:hidden;
  background:
    radial-gradient(120% 80% at 50% 110%, rgba(124,77,255,.30), transparent 60%),
    radial-gradient(80% 60% at 12% 8%,  rgba(224,95,168,.20), transparent 62%),
    radial-gradient(70% 55% at 88% 18%, rgba(96,120,255,.18), transparent 60%),
    linear-gradient(180deg, var(--void) 0%, var(--night) 46%, var(--dusk) 100%);
}
/* 缓慢流动的极光带 */
.sky .aurora{position:absolute;inset:-30%;filter:blur(80px);mix-blend-mode:screen;opacity:.55}
.sky .aurora i{position:absolute;border-radius:50%;will-change:transform}
.sky .a1{width:56vw;height:56vw;left:-8vw;top:-10vw;
  background:radial-gradient(circle,rgba(124,77,255,.75),transparent 66%);animation:drift1 26s ease-in-out infinite}
.sky .a2{width:44vw;height:44vw;right:-6vw;top:6vw;
  background:radial-gradient(circle,rgba(224,95,168,.62),transparent 66%);animation:drift2 32s ease-in-out infinite}
.sky .a3{width:50vw;height:50vw;left:26vw;bottom:-16vw;
  background:radial-gradient(circle,rgba(90,140,255,.5),transparent 66%);animation:drift3 38s ease-in-out infinite}
@keyframes drift1{50%{transform:translate3d(9vw,7vh,0) scale(1.12)}}
@keyframes drift2{50%{transform:translate3d(-8vw,10vh,0) scale(1.08)}}
@keyframes drift3{50%{transform:translate3d(6vw,-9vh,0) scale(1.15)}}
#stars{position:fixed;inset:0;z-index:-2;pointer-events:none}

/* ============ 装饰层：大四角星 / 流星 / 贴纸 ============ */
#decor{position:fixed;inset:0;z-index:-1;pointer-events:none;overflow:hidden}
.twinkles i{position:absolute;color:#ffe9a8;text-shadow:0 0 14px rgba(255,224,150,.9),0 0 34px rgba(255,196,120,.5);
  animation:twinkle var(--tw,3s) ease-in-out var(--dl,0s) infinite}
@keyframes twinkle{0%,100%{transform:scale(.65) rotate(0deg)}50%{transform:scale(1.25) rotate(18deg)}}
#decor .meteor{position:absolute;right:-6vh;width:120px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,rgba(255,255,255,.95),rgba(255,224,160,.5) 40%,transparent);
  transform:rotate(-38deg);transform-origin:100% 50%;opacity:0;
  box-shadow:0 0 8px rgba(255,236,190,.9),0 0 22px rgba(255,210,140,.55);
  animation:shoot 2.4s ease-out forwards}
#decor .meteor::after{content:"";position:absolute;right:0;top:50%;width:4px;height:4px;border-radius:50%;
  transform:translate(50%,-50%);background:#fff;box-shadow:0 0 10px #fff}
@keyframes shoot{0%{opacity:0;transform:translate3d(0,0,0) rotate(-38deg)}
  8%{opacity:1}60%{opacity:.9}100%{opacity:0;transform:translate3d(var(--mx,-60vh),52vh,0) rotate(-38deg)}}
.sticker{position:fixed;z-index:1;width:clamp(72px,10vw,128px);filter:drop-shadow(0 12px 22px rgba(8,3,24,.45));
  opacity:0;transform:scale(.8) rotate(-6deg);transition:opacity .9s var(--ease-out),transform .9s var(--ease-out)}
.sticker.on{opacity:.92;transform:scale(1) rotate(var(--rt,-3deg))}
/* 散落贴纸：挂在内容区块里，随页面滚动；不拦截点击 */
.sticker.scat{position:absolute;pointer-events:none;z-index:1;
  filter:drop-shadow(0 10px 18px rgba(8,3,24,.5)) saturate(1.06);
  opacity:0;transform:scale(.7) rotate(0deg);
  transition:opacity .8s var(--ease-out),transform .8s var(--ease-out)}
.sticker.scat.on{opacity:.88;transform:scale(1) rotate(var(--rt,0deg))}
/* 区块相对定位，作为贴纸定位基准 */
.sec{position:relative}
.hero{position:relative}
/* ============ 贴纸布局模式 ============ */
#stickerBtn{position:fixed;right:16px;bottom:16px;z-index:80;border:1px solid rgba(255,255,255,.35);
  background:rgba(30,18,58,.72);color:#f3edff;font-size:13px;font-weight:600;letter-spacing:.04em;
  padding:10px 16px;border-radius:999px;cursor:pointer;backdrop-filter:blur(12px);
  box-shadow:0 10px 26px rgba(8,3,24,.5);transition:.3s}
#stickerBtn:hover{background:rgba(80,52,150,.85);transform:translateY(-2px)}
#stickerBar{display:none;position:fixed;left:50%;bottom:18px;transform:translateX(-50%);z-index:90;
  align-items:center;gap:10px;padding:10px 16px;border-radius:999px;
  background:rgba(24,14,48,.9);border:1px solid rgba(255,255,255,.3);
  backdrop-filter:blur(14px);box-shadow:0 14px 34px rgba(8,3,24,.6)}
#stickerBar span{font-size:12.5px;color:#cfc4f2;white-space:nowrap}
#stickerBar button{border:1px solid rgba(255,255,255,.3);background:rgba(255,255,255,.1);
  color:#fff;font-size:12.5px;padding:8px 14px;border-radius:999px;cursor:pointer;transition:.25s}
#stickerBar button:hover{background:rgba(255,255,255,.24)}
#stickerBar button[data-act="done"]{background:linear-gradient(135deg,#a78bfa,#f0a5c8);border-color:transparent;font-weight:700}
/* 布局模式中的贴纸：可拖拽、显示轮廓 */
body.layout-mode .sticker.scat{pointer-events:auto;cursor:grab;outline:2px dashed rgba(167,139,250,.75);
  outline-offset:3px;border-radius:14px;opacity:.95}
body.layout-mode .sticker.scat:hover{outline-color:#fff;transform:scale(1.06) rotate(var(--rt,0deg))}
body.layout-mode .sticker.scat.drag{cursor:grabbing;opacity:1;z-index:99;outline-style:solid}
/* 导出弹窗 */
#posModal{display:none;position:fixed;inset:0;z-index:120;background:rgba(10,5,24,.7);
  backdrop-filter:blur(6px);align-items:center;justify-content:center;padding:20px}
#posModal.show{display:flex}
#posModal .pm-in{width:min(680px,94vw);max-height:86vh;overflow:auto;padding:26px 28px;border-radius:22px;
  background:linear-gradient(160deg,#241542,#1a0f33);border:1px solid rgba(255,255,255,.25);
  box-shadow:0 30px 80px rgba(0,0,0,.6)}
#posModal h3{font-size:17px;font-weight:700;margin-bottom:8px}
#posModal p{font-size:13px;color:#cfc4f2;margin-bottom:12px}
#posModal textarea{width:100%;height:240px;font-family:Consolas,monospace;font-size:11.5px;line-height:1.6;
  background:rgba(0,0,0,.35);color:#d9f3c9;border:1px solid rgba(255,255,255,.2);border-radius:12px;
  padding:12px;resize:vertical}
#posModal .pm-row{display:flex;gap:10px;justify-content:flex-end;margin-top:12px}
#posModal .pm-row button{border:none;font-size:13px;font-weight:600;padding:9px 20px;border-radius:999px;cursor:pointer}
#posModal .pm-copy{background:linear-gradient(135deg,#a78bfa,#f0a5c8);color:#fff}
#posModal .pm-close{background:rgba(255,255,255,.14);color:#fff}
@media (max-width:640px){
  #stickerBtn{right:12px;bottom:12px;padding:10px 12px;font-size:0;line-height:1}
  #stickerBtn::after{content:"🧩";font-size:17px;line-height:1}
  #stickerBar{flex-wrap:wrap;justify-content:center;max-width:94vw;gap:7px;border-radius:20px}
}
@media (prefers-reduced-motion:reduce){
  .twinkles i{animation:none !important}
}
@media (max-width:640px){
  .sticker.scat{filter:drop-shadow(0 8px 14px rgba(8,3,24,.5)) saturate(1.04)}
}

/* ============ 2. 液态玻璃核心 ============ */
.glass{
  position:relative;isolation:isolate;
  background:var(--g-fill);
  backdrop-filter:blur(var(--g-blur)) saturate(var(--g-sat)) brightness(1.12);
  -webkit-backdrop-filter:blur(var(--g-blur)) saturate(var(--g-sat)) brightness(1.12);
  border:1px solid var(--g-border);
  border-radius:var(--g-r);
  box-shadow:var(--g-shadow),
    inset 0 1px 0 rgba(255,255,255,.55),          /* 顶部镜面高光 */
    inset 0 -14px 30px rgba(124,77,255,.14),      /* 底部色彩渗透 */
    inset 0 14px 30px rgba(255,255,255,.05);
  overflow:hidden;
}
/* 高光：随鼠标游动的主反光 */
.glass::before{
  content:"";position:absolute;inset:0;z-index:2;pointer-events:none;
  background:
    radial-gradient(180px 110px at var(--mx,28%) var(--my,8%), rgba(255,255,255,.42), transparent 62%),
    radial-gradient(120px 70px at calc(100% - var(--mx,28%)) 92%, rgba(255,179,198,.20), transparent 66%);
  mix-blend-mode:screen;opacity:.9;transition:opacity .5s;
}
/* 液态边缘：内圈折射光带（模拟厚度） */
.glass::after{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;border-radius:inherit;
  box-shadow:
    inset 0 0 0 1px rgba(255,255,255,.10),
    inset 0 0 26px rgba(200,170,255,.16),
    inset 3px 0 14px rgba(255,255,255,.10),
    inset -3px 0 14px rgba(124,77,255,.14);
}
.glass:hover::before{opacity:1}
/* 流动光斑：让玻璃"活"起来 */
.glass .flow{position:absolute;z-index:0;pointer-events:none;border-radius:50%;filter:blur(26px);mix-blend-mode:screen;opacity:.5}
.glass .flow.f1{width:60%;height:60%;left:-14%;top:-24%;background:radial-gradient(circle,rgba(255,255,255,.5),transparent 68%);animation:flow1 14s ease-in-out infinite}
.glass .flow.f2{width:52%;height:52%;right:-12%;bottom:-20%;background:radial-gradient(circle,rgba(224,95,168,.55),transparent 68%);animation:flow2 18s ease-in-out infinite}
@keyframes flow1{50%{transform:translate3d(26%,34%,0) scale(1.18)}}
@keyframes flow2{50%{transform:translate3d(-22%,-26%,0) scale(1.12)}}

/* 有机形态变体（水滴玻璃） */
.glass.blob{border-radius:44% 56% 52% 48% / 48% 44% 56% 52%;animation:morph 16s ease-in-out infinite}
@keyframes morph{33%{border-radius:56% 44% 42% 58% / 42% 56% 44% 58%}66%{border-radius:46% 54% 58% 42% / 56% 46% 54% 44%}}

/* 玻璃层级变体 */
.glass.thin{--g-blur:12px;--g-r:18px;background:linear-gradient(135deg,rgba(255,255,255,.10),rgba(255,255,255,.03))}
.glass.thick{--g-blur:34px;--g-r:36px;background:linear-gradient(135deg,rgba(255,255,255,.22),rgba(150,110,255,.12))}
.glass.pink{background:linear-gradient(135deg,rgba(255,179,198,.22),rgba(224,95,168,.10))}
.glass.gold{background:linear-gradient(135deg,rgba(255,215,154,.22),rgba(255,179,120,.08))}

/* ============ 3. 玻璃按钮 / 键帽 ============ */
.gbtn{
  position:relative;display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:14px 30px;border-radius:999px;font-size:15px;font-weight:600;letter-spacing:.02em;
  background:linear-gradient(135deg,rgba(255,255,255,.24),rgba(255,255,255,.07));
  backdrop-filter:blur(16px) saturate(170%);-webkit-backdrop-filter:blur(16px) saturate(170%);
  border:1px solid rgba(255,255,255,.32);
  box-shadow:0 12px 30px rgba(8,3,24,.45), inset 0 1px 0 rgba(255,255,255,.6), inset 0 -8px 18px rgba(224,95,168,.16);
  transition:transform .35s var(--ease-liquid), box-shadow .35s;overflow:hidden;cursor:pointer;
}
.gbtn::after{content:"";position:absolute;inset:0;background:radial-gradient(90px 40px at 30% 0%,rgba(255,255,255,.5),transparent 60%);mix-blend-mode:screen;opacity:.7}
.gbtn:hover{transform:translateY(-3px) scale(1.03);box-shadow:0 20px 44px rgba(124,77,255,.4), inset 0 1px 0 rgba(255,255,255,.7)}
.gbtn:active{transform:translateY(0) scale(.98)}
.gbtn.primary{background:linear-gradient(135deg,rgba(224,95,168,.6),rgba(124,77,255,.6));border-color:rgba(255,255,255,.42)}
.gbtn.sm{padding:9px 18px;font-size:13px}

/* 数字键帽 */
.key{
  position:relative;width:74px;height:74px;border-radius:24px;font-size:26px;font-weight:600;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(150deg,rgba(255,255,255,.20),rgba(255,255,255,.05));
  backdrop-filter:blur(18px) saturate(180%);-webkit-backdrop-filter:blur(18px) saturate(180%);
  border:1px solid rgba(255,255,255,.26);
  box-shadow:0 14px 26px rgba(8,3,24,.5), inset 0 1px 0 rgba(255,255,255,.6), inset 0 -10px 20px rgba(124,77,255,.16);
  transition:transform .22s var(--ease-liquid), box-shadow .22s;cursor:pointer;
}
.key:hover{transform:translateY(-4px);box-shadow:0 22px 36px rgba(124,77,255,.42), inset 0 1px 0 rgba(255,255,255,.75)}
.key:active,.key.hit{transform:translateY(1px) scale(.94);box-shadow:inset 0 4px 14px rgba(8,3,24,.5)}
.key .sub{position:absolute;bottom:9px;font-size:9px;letter-spacing:.16em;color:var(--muted);text-transform:uppercase}

/* ============ 4. 排版工具 ============ */
.eyebrow{font-size:11.5px;letter-spacing:.34em;text-transform:uppercase;color:var(--muted);display:flex;align-items:center;gap:12px}
.eyebrow::before{content:"";width:34px;height:1px;background:linear-gradient(90deg,var(--blush),transparent)}
.eyebrow b{color:var(--blush);font-weight:600}
.h-xl{font-size:clamp(38px,6.4vw,84px);font-weight:300;line-height:1.06;letter-spacing:-.02em}
.h-lg{font-size:clamp(26px,3.4vw,44px);font-weight:300;line-height:1.2;letter-spacing:-.01em}
.h-md{font-size:20px;font-weight:600;letter-spacing:-.01em}
.lead{color:var(--muted);font-size:15.5px;line-height:1.85;font-weight:300}
.grad{background:linear-gradient(100deg,var(--blush),var(--violet) 55%,var(--gold));-webkit-background-clip:text;background-clip:text;color:transparent}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* ============ 5. 通用容器 & 入场动画 ============ */
.shell{position:relative;z-index:1;max-width:1240px;margin:0 auto;padding:0 26px}
.sec{padding:88px 0}
.sec-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:34px}
.reveal{opacity:0;transform:translateY(38px) scale(.985);transition:opacity .9s var(--ease-out),transform .9s var(--ease-out)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;
    transition-duration:.01ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* ============ 6. 照片占位（换成真图：把 .ph 的 background 换成 url(...) ） ============ */
.ph{position:relative;overflow:hidden;border-radius:18px;background:#1a1030;isolation:isolate}
.ph img{width:100%;height:100%;object-fit:cover;display:block}
/* 抽象"照片感"：光源 + 散景 + 底部压暗，换真图后删掉 ::before 即可 */
.ph::before{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:
    radial-gradient(38% 30% at 72% 22%, rgba(255,255,255,.48), transparent 62%),
    radial-gradient(9% 9% at 22% 34%, rgba(255,255,255,.5), transparent 70%),
    radial-gradient(7% 7% at 38% 64%, rgba(255,255,255,.34), transparent 70%),
    radial-gradient(12% 12% at 68% 76%, rgba(255,255,255,.28), transparent 70%),
    radial-gradient(6% 6% at 86% 50%, rgba(255,255,255,.42), transparent 70%),
    radial-gradient(5% 5% at 12% 78%, rgba(255,255,255,.3), transparent 70%),
    linear-gradient(180deg, transparent 52%, rgba(10,4,26,.5));
}

.ph::after{content:"";position:absolute;inset:0;z-index:2;opacity:.35;mix-blend-mode:overlay;
  background-image:radial-gradient(rgba(255,255,255,.2) .6px,transparent .6px);background-size:3px 3px}
.ph .shine{position:absolute;inset:0;z-index:3;background:linear-gradient(115deg,transparent 40%,rgba(255,255,255,.22) 50%,transparent 60%);
  transform:translateX(-100%);transition:transform 1.1s var(--ease-out)}
.ph:hover .shine{transform:translateX(100%)}

/* （原 .p1~.p8 占位渐变已随真实照片移除；如需回退可从 git 历史恢复） */

/* ============ 7. 滚动条 ============ */
::-webkit-scrollbar{width:9px;height:9px}
::-webkit-scrollbar-track{background:rgba(255,255,255,.04)}
::-webkit-scrollbar-thumb{background:linear-gradient(var(--violet),var(--magenta));border-radius:6px}