/* The Velvet Test, web version: velvet black, wine and gold. The pictures carry the page, so they get the screen:
   the start page is three big cards, a scene and its answers fit one screen (no scrolling), the result card floats
   in 3D. Wide screens put the picture beside the text; phones stack them. System fonts only (big CJK font files and
   Google Fonts are slow or blocked in mainland China); the brand fonts live in the images. */
:root{--bg:#0b0809;--panel:#16100f;--wine:#6b1a2a;--wine2:#8b1e2d;--gold:#c9a24b;--gold2:#e8cf8f;--ink:#efe4cc;--mute:#a8957a;--line:rgba(201,162,75,.3);
  --vh:100vh}
@supports (height:100dvh){:root{--vh:100dvh}}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;background:var(--bg);color:var(--ink)}
body{font:16px/1.6 -apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;min-height:var(--vh);
  background:radial-gradient(ellipse 80% 60% at 50% 0%,#2e1217 0%,var(--bg) 62%) fixed}
.serif{font-family:"Songti SC","STSong","Noto Serif SC","Source Han Serif SC",Georgia,"Times New Roman",serif}
.screen{display:none;animation:fade .35s ease}.screen.on{display:block}
@keyframes fade{from{opacity:0}to{opacity:1}}
.brand{letter-spacing:.42em;font-size:12px;color:var(--gold);text-align:center}
.lang{position:fixed;top:12px;right:14px;z-index:5;font-size:13px;color:var(--mute);background:rgba(11,8,9,.6);border:1px solid var(--line);border-radius:999px;padding:4px 12px;cursor:pointer}
.small{font-size:12.5px;color:var(--mute);text-align:center}
footer{margin-top:14px;font-size:12px;color:#7d6d57;text-align:center;line-height:1.7}

/* buttons */
.btn{text-decoration:none;display:block;width:100%;border:1px solid var(--line);background:var(--panel);color:var(--ink);border-radius:12px;padding:13px 16px;font-size:16px;text-align:left;cursor:pointer;margin:9px 0;line-height:1.45;transition:border-color .15s,background .15s}
.btn:hover{border-color:var(--gold)}.btn:active{transform:scale(.99)}
.btn.sel{border-color:var(--gold);background:#2a1a12}
.btn.main{text-align:center;background:linear-gradient(180deg,var(--wine2),var(--wine));border-color:#a8323f;font-weight:600;letter-spacing:.08em}
.btn.main:disabled{opacity:.45;cursor:default}
.btn.gold{text-align:center;background:linear-gradient(180deg,#d9b866,#a8833a);color:#1a0f08;border-color:#e8cf8f;font-weight:600}
.btn.ghost{text-align:center;background:none}
.chip{flex:1;border:1px solid var(--line);background:none;color:var(--ink);border-radius:999px;padding:9px 0;font-size:15px;cursor:pointer}
.chip.sel{border-color:var(--gold);background:#2a1a12;color:var(--gold2)}

/* the 3D float shared by the start cards and the result card */
.float{animation:float 6.5s ease-in-out infinite alternate;transform-style:preserve-3d;will-change:transform}
.float.slow{animation-duration:8s}
@keyframes float{0%{transform:translateY(-7px) rotateY(-7deg) rotateX(3deg)}100%{transform:translateY(7px) rotateY(7deg) rotateX(-3deg)}}
@media (prefers-reduced-motion:reduce){.float{animation:none}}

/* ---------------------------------------------------------------- start */
.intro.on{display:flex;flex-direction:column;min-height:var(--vh);padding:18px 14px 16px}
.ihead{text-align:center;padding-top:8px}
h1{font-weight:500;font-size:clamp(32px,6vw,52px);line-height:1.2;margin:8px 0 4px;letter-spacing:.08em;color:#f3e2b4}
.sub{color:var(--mute);font-size:14px}
.fan{flex:1;display:flex;justify-content:center;align-items:center;min-height:0;margin:10px 0 6px}
.fc{perspective:1300px}
.fc img{display:block;border-radius:10px;box-shadow:0 22px 50px rgba(0,0,0,.75)}
.fc.l .float{animation-delay:-2s}.fc.r .float{animation-delay:-4.3s}
.fc.l{transform:rotate(-7deg) translateY(4%);z-index:1}.fc.r{transform:rotate(7deg) translateY(4%);z-index:1}.fc.c{z-index:2}
.ibar{display:flex;justify-content:center}
.ibox{width:100%;max-width:560px}
.lead{font-size:14px;color:#d9ccb2;text-align:center;line-height:1.6}
.opts{display:flex;align-items:center;gap:12px;margin:12px 0 2px}.lbl{font-size:13px;color:var(--mute);white-space:nowrap}
.seg{display:flex;gap:8px;flex:1}
label.check{display:flex;gap:10px;align-items:center;justify-content:center;font-size:15px;margin:10px 2px 2px;cursor:pointer}
label.check input{width:20px;height:20px;accent-color:var(--wine2)}
/* phone: the three cards overlap across the width */
.fc.c img{width:min(56vw,calc((var(--vh) - 330px) / 1.5));height:auto}
.fc.l img,.fc.r img{width:min(44vw,calc((var(--vh) - 380px) / 1.5));height:auto}
.fc.l{margin-right:-15vw}.fc.r{margin-left:-15vw}
/* wide screen: three big cards side by side */
@media (min-width:900px){
  .intro.on{padding:22px 40px 18px}
  .fc.c img{height:calc(var(--vh) - 330px);width:auto;max-height:820px}
  .fc.l img,.fc.r img{height:calc((var(--vh) - 330px) * .9);width:auto;max-height:740px}
  .fc.l{margin-right:-2vw}.fc.r{margin-left:-2vw}
  .ibox{max-width:980px;display:grid;grid-template-columns:1.25fr 1fr;gap:6px 28px;align-items:center}
  .lead{grid-column:1/-1}
  .opts{margin:0}.check{justify-content:flex-start}
  #start{grid-column:2;grid-row:2/4;align-self:center;margin:0;padding:16px}
  .ibox footer{grid-column:1/-1;margin-top:4px}
}

/* ---------------------------------------------------------------- a scene */
.qs.on{display:grid;height:var(--vh);padding:12px 14px 8px;gap:0;grid-template-columns:100%;
  grid-template-rows:auto auto minmax(0,1fr) auto auto auto}
.qside{display:contents}
.qhead{grid-row:1;display:flex;justify-content:space-between;font-size:13px;color:var(--mute);padding-right:92px}
.bar{grid-row:2;height:3px;background:#2a1d1a;border-radius:3px;overflow:hidden;margin:6px 0 8px}.bar i{display:block;height:100%;background:var(--gold);transition:width .3s}
.qpic{grid-row:3;min-height:0;display:flex;justify-content:center}
.scene{display:block;height:100%;width:100%;object-fit:cover;object-position:center 42%;border-radius:14px;border:1px solid var(--line);background:#1a1212;box-shadow:0 14px 40px rgba(0,0,0,.6)}
.qtext{grid-row:4;font-size:17px;line-height:1.55;margin:10px 2px 4px}
.qans{grid-row:5}
.qans .btn{padding:10px 14px;font-size:15px;margin:6px 0}
.back{grid-row:6;background:none;border:none;color:var(--mute);font-size:14px;padding:4px 0;cursor:pointer;justify-self:start}
@media (min-width:900px) and (min-aspect-ratio:1/1){
  .qs.on{grid-template-columns:auto minmax(380px,560px);grid-template-rows:100%;gap:44px;padding:26px 48px;justify-content:center;align-items:center}
  .qpic{grid-row:1;height:calc(var(--vh) - 52px)}
  .scene{width:auto;aspect-ratio:4/5;height:100%}
  .qside{display:flex;flex-direction:column;justify-content:center}
  .qhead{padding-right:0}.qtext{font-size:24px;margin:18px 0 14px}
  .qans .btn{padding:15px 18px;font-size:17px;margin:10px 0}
}

/* ---------------------------------------------------------------- result */
.res.on{display:block;padding:16px 14px 30px}
.rpic{display:flex;flex-direction:column;align-items:center;gap:8px;padding-top:30px}
.tilt{perspective:1400px;touch-action:pan-y}
.tcard{position:relative;transform-style:preserve-3d;transition:transform .15s ease-out;will-change:transform;border-radius:10px}
.tcard:before{content:'';position:absolute;inset:0;border-radius:10px;background:linear-gradient(90deg,#4d3214,#e7c98a 35%,#a77d3a 70%,#5a3a16);transform:translateZ(-12px)}
.tcard:after{content:'';position:absolute;left:8%;right:8%;bottom:-9%;height:8%;border-radius:50%;background:radial-gradient(closest-side,rgba(0,0,0,.7),rgba(0,0,0,0));transform:translateZ(-40px)}
.card{display:block;position:relative;border-radius:10px;transform:translateZ(1px);box-shadow:0 18px 50px rgba(0,0,0,.7);width:min(86vw,calc((var(--vh) - 120px) / 1.5));height:auto}
.sheen{position:absolute;inset:0;border-radius:10px;pointer-events:none;mix-blend-mode:screen;transform:translateZ(2px);
  background:linear-gradient(118deg,rgba(255,255,255,0) 30%,rgba(255,236,190,.3) 46%,rgba(255,255,255,.05) 54%,rgba(255,255,255,0) 66%);background-size:220% 220%;
  background-position:var(--x,30%) var(--y,30%);animation:sheen 8s ease-in-out infinite alternate}
@keyframes sheen{0%{background-position:15% 20%}100%{background-position:85% 80%}}
.tilt.touch .sheen{animation:none}
.rside{max-width:560px;margin:0 auto}
.rside .brand{margin-top:18px}
.title{font-size:clamp(28px,5vw,40px);text-align:center;margin:10px 0 4px;letter-spacing:.06em;color:var(--gold2)}
.tagline{text-align:center;color:#d9ccb2;margin-bottom:10px}
.ranks{margin:16px 0}.rank{display:grid;grid-template-columns:5.5em 1fr 3em;gap:10px;align-items:center;font-size:14px;margin:7px 0}
.rank i{height:8px;border-radius:8px;background:#2a1d1a;overflow:hidden}.rank i b{display:block;height:100%;background:linear-gradient(90deg,var(--wine2),var(--gold))}
.rank em{font-style:normal;color:var(--mute);text-align:right}
.desc{font-size:15px;color:#e2d6bd}.pairs{font-size:14px;color:var(--mute);margin:10px 0}
.cta{border:1px solid var(--gold);border-radius:14px;padding:14px;margin:20px 0;background:linear-gradient(180deg,#1d1310,#120c0b)}
.cta h3{margin:0 0 6px;font-weight:500;color:var(--gold2)}
.qr{width:200px;display:block;margin:10px auto;border-radius:8px;background:#fff;padding:8px}
@media (min-width:900px) and (min-aspect-ratio:1/1){
  .res.on{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(400px,560px);gap:40px;padding:0 48px;justify-content:center}
  .rpic{position:sticky;top:0;height:var(--vh);justify-content:center;padding:0}
  .card{width:auto;height:calc(var(--vh) - 110px);max-height:1100px}
  .rside{padding:56px 0 40px}
}

/* poster overlay, toast, WeChat hints */
.overlay{position:fixed;inset:0;background:rgba(8,5,6,.95);display:none;flex-direction:column;align-items:center;justify-content:center;padding:18px;z-index:9;overflow:auto}
.overlay.on{display:flex}.overlay img{width:auto;max-width:100%;max-height:calc(var(--vh) - 190px);border-radius:10px;margin:10px 0}.overlay .btn{max-width:440px}
.toast{position:fixed;left:50%;bottom:28px;transform:translateX(-50%);background:#2a1d1a;border:1px solid var(--gold);color:var(--ink);padding:10px 16px;border-radius:999px;font-size:14px;opacity:0;transition:opacity .25s;pointer-events:none;z-index:10}
.toast.on{opacity:1}
.wx{display:none}.is-wx .wx{display:block}.is-wx .no-wx{display:none}