/* 复盘镜 · 试读「三下」预告片剪法（WO-OPUS-016 · 022-c）
   同一个卷宗世界：纸、章、打字机、底片。颜色与字体全部沿用 site.css token。
   一幕一屏：开场 → 被说中 → 假如 → 快剪 → 他的海报 → 片名卡。 */


/* 字体（017）：改用全站同一套 FPJ Serif／FPJ Sans（site.css）；灯下补半档字重也搬进 site.css。宋体不用在 14px 以下。 */

html{scroll-snap-type:y proximity}
body.sx{overflow-x:hidden}
.sx main{position:relative}
.sc{position:relative;scroll-margin-top:55px;min-height:calc(100svh - 55px);scroll-snap-align:start;display:flex;flex-direction:column;justify-content:center;padding:28px var(--gut) 76px;overflow:hidden}
.sc .inner{width:100%;max-width:440px;margin:0 auto;position:relative}

/* 全页浮水印（固定层，不挡点击） */
.wm{position:fixed;inset:0;z-index:5;pointer-events:none;overflow:hidden;opacity:.08}
.wm i{position:absolute;font:700 13px/1 var(--type);letter-spacing:.2em;color:var(--cin);white-space:nowrap;transform:rotate(-24deg)}

/* 下一幕的提示 */
.next{position:absolute;left:50%;bottom:18px;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:4px;
  background:none;border:0;color:var(--muted);font:500 11px/1 var(--mono);letter-spacing:.2em;cursor:pointer;padding:8px 14px;opacity:0;transition:opacity .6s}
.next.on{opacity:1}
.next svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.6}
.motion .next.on svg{animation:nudge 1.8s ease-in-out infinite}
@keyframes nudge{50%{transform:translateY(4px)}}

/* ── 冷开场：一片黑，放映机闪两下，灯亮 ── */
.coldopen{position:fixed;inset:0;z-index:40;background:#0B0907;pointer-events:none;opacity:0;visibility:hidden}
.motion .coldopen{visibility:visible;animation:coldopen 1.5s linear .15s both}
@keyframes coldopen{0%{opacity:1}34%{opacity:1}40%{opacity:.62}46%{opacity:1}60%{opacity:.38}66%{opacity:.7}100%{opacity:0;visibility:hidden}}

/* ── 第一幕：一本合着的卷宗 ── */
.s-cover{background:radial-gradient(90% 60% at 50% 38%,color-mix(in srgb,var(--paper) 55%,transparent),transparent 70%)}
.s-cover .inner{display:flex;flex-direction:column;align-items:center}
.folder{position:relative;width:min(300px,78vw);aspect-ratio:3/4;perspective:1400px;margin-top:6px}
.folder .under,.folder .lid{position:absolute;inset:0;border-radius:3px 10px 10px 3px}
.folder .under{background:var(--card);box-shadow:0 26px 40px -24px var(--shadow);
  background-image:repeating-linear-gradient(0deg,transparent 0 27px,color-mix(in srgb,var(--rule) 55%,transparent) 27px 28px);background-position:0 34px}
.folder .lid{transform-origin:left center;transform-style:preserve-3d;backface-visibility:hidden;-webkit-backface-visibility:hidden;transition:transform 1.05s cubic-bezier(.6,.02,.25,1);z-index:2;
  background:linear-gradient(135deg,color-mix(in srgb,var(--gold) 26%,var(--paper-2)),var(--paper-2) 60%);
  box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--gold) 35%,transparent),0 30px 44px -26px var(--shadow)}
.folder .lid::before{content:"";position:absolute;right:-1px;top:18%;width:22px;height:64px;border-radius:0 6px 6px 0;background:inherit;box-shadow:inherit}
.folder .lid .file{position:absolute;left:22px;top:22px;font:700 11px/1.5 var(--type);letter-spacing:.2em;color:var(--muted)}
.folder .lid .file b{display:block;font-weight:700;color:var(--ink-2)}
.folder .lid .line{position:absolute;left:22px;right:22px;bottom:30px;font:600 16px/1.65 var(--serif);color:var(--ink);min-height:3.3em}
.folder .lid .string{position:absolute;right:26px;top:50%;width:26px;height:26px;border-radius:50%;border:1.5px solid color-mix(in srgb,var(--ink) 55%,transparent);transform:translateY(-50%)}
.folder .lid .string::after{content:"";position:absolute;left:50%;top:100%;width:1.5px;height:60px;background:color-mix(in srgb,var(--ink) 45%,transparent);transform:rotate(12deg);transform-origin:top}
.folder.open .lid{transform:rotateY(-172deg)}
/* 019：翻开后卷宗不能“只剩一张白纸”——
   ①封面有内页（牛皮纸衬页＋插袋），翻过去看得到；封面上的字和章随封面背过去，不镜像透出；
   ②整份卷宗在翻开时往右挪、缩小，让翻开的两页都留在手机屏幕里；
   ③底下那页就是第二幕「照见」那一页的页眉，翻开即接得上下一幕。 */
.folder .lid{backface-visibility:visible;-webkit-backface-visibility:visible}
.folder .lid>*{backface-visibility:hidden;-webkit-backface-visibility:hidden}
.folder .lid>.inside{position:absolute;inset:0;border-radius:10px 3px 3px 10px;transform:rotateY(180deg);
  background:linear-gradient(225deg,color-mix(in srgb,var(--gold) 20%,var(--paper-2)),var(--paper-2) 72%);
  box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--gold) 35%,transparent),inset -18px 0 22px -18px var(--shadow)}
.folder .lid>.inside::before{content:"";position:absolute;left:14px;right:14px;bottom:16px;height:38%;border-radius:2px 2px 6px 6px;
  background:color-mix(in srgb,var(--gold) 16%,var(--paper));box-shadow:0 -1px 0 color-mix(in srgb,var(--gold) 40%,transparent),0 -10px 14px -12px var(--shadow);
  clip-path:polygon(0 18%,50% 0,100% 18%,100% 100%,0 100%)}
.folder .lid>.inside::after{content:"FPJ · P.06";position:absolute;left:24px;top:24px;font:700 10px/1 var(--type);letter-spacing:.2em;color:var(--muted);opacity:.7}
.folder .under .u-hd{position:absolute;left:22px;right:20px;top:18px;display:flex;justify-content:space-between;align-items:baseline;padding-bottom:8px;border-bottom:1.5px solid var(--ink);
  font:500 10px/1 var(--type);letter-spacing:.16em;color:var(--muted)}
.folder .under .u-hd b{font:900 17px/1 var(--serif);letter-spacing:.2em;color:var(--ink)}
.folder .under .u-hd~i{position:absolute;left:22px;height:9px;border-radius:2px;background:color-mix(in srgb,var(--ink) 9%,transparent)}
.folder{transition:translate 1.05s cubic-bezier(.6,.02,.25,1),scale 1.05s cubic-bezier(.6,.02,.25,1)}
.folder.open{translate:30% 0;scale:.62}
@media (min-width:700px){.folder.open{translate:50% 0;scale:1}}
.folder{cursor:pointer}
.sx-stamp{position:absolute;left:50%;top:40%;transform:translate(-50%,-50%) rotate(-6deg);border:3px solid var(--cin);color:var(--cin);padding:8px 16px 10px;text-align:center;z-index:3;
  background:color-mix(in srgb,var(--paper-2) 30%,transparent);mix-blend-mode:multiply}
:root[data-mode="lamp"] .sx-stamp{mix-blend-mode:normal}
.sx-stamp b{display:block;font:900 32px/1.15 var(--serif);letter-spacing:.14em;white-space:nowrap}
.sx-stamp small{display:block;font:700 10px/1 var(--type);letter-spacing:.26em;margin-top:4px}
.sx-stamp.hid{opacity:0}
.motion .sx-stamp.hit{animation:sxstamp .42s cubic-bezier(.3,1.4,.5,1) both}
@keyframes sxstamp{0%{opacity:0;transform:translate(-50%,-50%) rotate(-12deg) scale(2.4)}60%{opacity:1}100%{opacity:1;transform:translate(-50%,-50%) rotate(-6deg) scale(1)}}
.motion .shake{animation:shake .28s linear}
@keyframes shake{25%{transform:translate(2px,1px)}50%{transform:translate(-2px,-1px)}75%{transform:translate(1px,-2px)}}
.motion .folder.drop{animation:drop 1s cubic-bezier(.2,.9,.3,1.12) both}
@keyframes drop{0%{opacity:0;transform:translateY(-48svh) rotate(-14deg)}70%{opacity:1}100%{transform:translateY(0) rotate(-2deg)}}
.folder{transform:rotate(-2deg)}
.motion .folder:not(.drop){opacity:0}
.cover-note{margin:18px 0 0;font:500 11px/1 var(--mono);letter-spacing:.2em;color:var(--muted);text-align:center;min-height:1em}
.open-btn{margin-top:18px;min-width:168px;min-height:52px;border:0;background:var(--btn-bg);color:var(--btn-fg);font:600 18px/1 var(--serif);letter-spacing:.5em;padding-left:.5em;cursor:pointer;
  box-shadow:0 14px 24px -16px var(--shadow);opacity:0;transform:translateY(8px);transition:opacity .5s,transform .5s}
.open-btn.on{opacity:1;transform:none}
.motion .open-btn.on{animation:sxBtnBreathe 2.6s ease-in-out 1s infinite}
/* 019：原本跟第三幕银幕同名 breathe，后定义的（opacity 0→.02）盖掉这一个，按钮一呼吸就透明——改名，各管各的 */
@keyframes sxBtnBreathe{50%{box-shadow:0 14px 30px -12px var(--shadow),0 0 0 6px color-mix(in srgb,var(--cin) 14%,transparent)}}
.back-row{position:absolute;left:var(--gut);top:14px;z-index:4}
.back-row a{font:500 13px/1 var(--sans);color:var(--muted);text-decoration:none;letter-spacing:.06em}

/* ── 第二幕：被说中 ＋ 假如 ── */
.page{position:relative;background:var(--paper);padding:20px 18px 22px 30px;box-shadow:0 22px 36px -26px var(--shadow)}
.page::before{content:"";position:absolute;left:16px;top:0;bottom:0;width:1px;background:color-mix(in srgb,var(--cin) 45%,transparent)}
.page .hd{display:flex;justify-content:space-between;align-items:baseline;border-bottom:1px solid var(--rule);padding-bottom:7px;margin-bottom:14px}
.page .hd b{font:700 14px/1 var(--serif);letter-spacing:.2em}
.page .hd span{font:500 10.5px/1 var(--mono);letter-spacing:.18em;color:var(--muted)}
.see p{margin:0 0 12px;font:var(--w-read) 17.5px/1.85 var(--serif);color:var(--ink);transition:opacity .6s,color .6s}
.see p.dim{opacity:.46}
.see p.hitl{font-weight:var(--w-strong);color:var(--ink)}
.see p.hitl span.u{background:linear-gradient(var(--cin),var(--cin)) left 100%/0 2px no-repeat;transition:background-size .9s cubic-bezier(.3,.8,.3,1);padding-bottom:2px}
.see p.hitl.lined span.u{background-size:100% 2px}
.see p.pend{visibility:hidden}
.tw-caret{display:inline-block;width:.5em;height:1.1em;vertical-align:-.15em;background:var(--cin);margin-left:2px;animation:caret .8s steps(1) infinite}
@keyframes caret{50%{opacity:0}}

.ifbox{margin-top:18px;border:1.5px solid var(--ink);background:var(--card);padding:14px 14px 12px;opacity:0;transform:translateY(16px);transition:opacity .7s,transform .7s cubic-bezier(.2,.8,.2,1)}
.ifbox.on{opacity:1;transform:none}
.ifbox .qid{font:500 10.5px/1 var(--mono);letter-spacing:.18em;color:var(--muted)}
.ifbox .stem{margin:6px 0 0;font:400 13.5px/1.7 var(--sans);color:var(--muted)}
.ifbox .ask{margin:10px 0 10px;font:700 17px/1.5 var(--serif);color:var(--ink)}
.opts{display:grid;gap:8px}
.opt{display:flex;gap:10px;align-items:flex-start;text-align:left;width:100%;border:1px solid var(--rule);background:transparent;color:var(--ink-2);padding:11px 12px;min-height:48px;
  font:400 15px/1.6 var(--sans);cursor:pointer;transition:background .35s,color .35s,border-color .35s,transform .15s}
.opt i{flex:none;font:700 12px/1.6 var(--type);color:var(--muted);font-style:normal;padding-top:1px}
.opt:active{transform:scale(.99)}
.opt[aria-pressed="true"]{background:var(--btn-bg);color:var(--btn-fg);border-color:var(--btn-bg)}
.opt[aria-pressed="true"] i{color:inherit}
.echo{position:relative;min-height:5.6em;margin-top:12px;padding:10px 2px 0 14px;border-left:2px solid var(--cin)}
.echo p{margin:0;font:var(--w-echo) 16px/1.8 var(--serif);color:var(--ink)}
.echo .ghost{color:var(--muted);font:400 13.5px/1.7 var(--sans)}
.echo .old{position:absolute;left:14px;right:2px;top:10px;color:var(--muted);pointer-events:none}
.motion .echo .old{animation:rewrite .55s ease-in forwards}
@keyframes rewrite{0%{clip-path:inset(0 0 0 0);opacity:1}100%{clip-path:inset(0 0 0 100%);opacity:.2;transform:translateY(-4px)}}
.echo .strike{position:absolute;left:14px;right:2px;top:1.55em;height:1.5px;background:var(--cin);transform-origin:left;transform:scaleX(0)}
.motion .echo .strike.run{animation:sxStrike .35s ease-out forwards}
/* 019：原名 strike 与 site.css 打字机同名、盖掉了逐字落字效果——改名 */
@keyframes sxStrike{to{transform:scaleX(1)}}
.sx-fine{margin:10px 0 0;font:400 12px/1.6 var(--sans);color:var(--muted)}

/* ── 第三幕：预告。一间放映室：墙上一块亮着的银幕，身后打过来一道光，光里有灰，前面几排椅背和人头。
   银幕上有胶片颗粒、闪烁、片门晃动、划痕；放完了，场灯慢慢亮起来。白天、灯下都一样暗。 ── */
.s-reel{--rm:#070605;--sc:#16110C;--lt:#F2E8D5;--dm:#9C8F78;--rl:#2E261E;--au:#C7A15A;--ci:#C0624A;background:var(--rm);color:var(--lt);padding-inline:0;padding-top:0;justify-content:flex-start}
.theater{position:relative;width:100%;padding:22px 12px 0;overflow:hidden;overflow:clip;
  background:radial-gradient(120% 60% at 50% 18%,#15100B 0%,var(--rm) 62%)}
.t-house{position:absolute;inset:0;background:radial-gradient(90% 55% at 50% 0%,rgba(255,196,130,.20),transparent 70%),linear-gradient(180deg,rgba(255,210,160,.06),transparent 60%);opacity:0;transition:opacity 2.6s ease;pointer-events:none}
.theater.lit .t-house{opacity:1}
.t-screen{position:relative;z-index:2;width:100%;max-width:640px;margin:0 auto}
.sx-reel{position:relative;width:100%;aspect-ratio:4/3;max-width:100%;background:var(--sc);overflow:hidden;cursor:pointer;user-select:none;-webkit-user-select:none;border-radius:2px;
  box-shadow:0 0 0 1px rgba(255,235,205,.05),0 0 40px 6px rgba(242,228,200,.10),0 0 120px 30px rgba(242,228,200,.06);transition:box-shadow .5s ease,filter .5s}
.sx-reel.lum-lo{box-shadow:0 0 0 1px rgba(255,235,205,.03),0 0 30px 4px rgba(242,228,200,.04),0 0 90px 20px rgba(242,228,200,.02)}
.sx-reel::before{content:"";position:absolute;inset:0;background:radial-gradient(75% 65% at 50% 45%,rgba(255,236,205,.09),transparent 72%);pointer-events:none;transition:opacity 1.4s;z-index:1}
.sx-reel.dark::before{opacity:0}
.sx-reel::after{content:"";position:absolute;inset:0;background:#FFF3DC;opacity:0;pointer-events:none;z-index:6}
/* 不做快闪：只留很慢的明暗呼吸，眼睛不累 */
.motion .sx-reel.run::after{animation:sxReelBreathe 5s ease-in-out infinite}
@keyframes sxReelBreathe{0%,100%{opacity:0}50%{opacity:.02}}
.r-grain{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:1}
.r-vig{position:absolute;inset:0;pointer-events:none;z-index:5;background:radial-gradient(105% 95% at 50% 50%,transparent 58%,rgba(0,0,0,.55) 100%)}
.r-frame{position:absolute;inset:0;z-index:2}
.r-scr{position:absolute;inset:0;pointer-events:none;z-index:5}
.r-scr i{position:absolute;top:-5%;bottom:-5%;width:1px;background:linear-gradient(180deg,transparent,rgba(255,244,220,.28) 20%,rgba(255,244,220,.12) 60%,transparent);opacity:0}
.r-scr i.go{animation:scr var(--d,.6s) linear forwards}
@keyframes scr{0%{opacity:0}15%{opacity:1}50%{opacity:.4;transform:translateX(1px)}85%{opacity:.8}100%{opacity:0;transform:translateX(-1px)}}
.r-scr b{position:absolute;width:var(--s,3px);height:var(--s,3px);border-radius:50%;background:rgba(255,244,220,.5);opacity:0}
.r-scr b.go{animation:dust .14s steps(1) forwards}
@keyframes dust{0%{opacity:1}100%{opacity:0}}
.r-cap{position:absolute;left:18px;top:16px;font:700 12px/1 var(--type);letter-spacing:.24em;color:var(--au);opacity:0;transition:opacity .4s}
.r-act,.r-no{position:absolute;bottom:13px;font:500 10.5px/1 var(--mono);letter-spacing:.2em;color:var(--dm);z-index:3}
.r-act{left:18px}.r-no{right:16px}
.r-pz{position:absolute;right:16px;top:14px;font:500 10.5px/1 var(--mono);letter-spacing:.2em;color:var(--ci);opacity:0;z-index:3}
.sx-reel.paused .r-pz{opacity:1}
.r-line{position:absolute;left:20px;right:20px;top:50%;margin:0;transform:translateY(-50%);font:700 21px/1.85 var(--serif);letter-spacing:.1em;white-space:pre-line;color:var(--lt);opacity:0;text-shadow:0 0 18px rgba(255,236,205,.18)}
.r-line.in,.r-line.slow,.r-line.glow,.r-line.on{opacity:1}
.motion .r-line.in{opacity:0;animation:rin .5s ease-out forwards}
.motion .r-line.in.fast{animation-duration:.26s}
.motion .r-line.slow{opacity:0;animation:rin 1.1s ease-out forwards}
.motion .r-line.glow{opacity:0;animation:rglow 2.2s ease-out forwards}
@keyframes rin{from{opacity:0;transform:translateY(calc(-50% + 8px))}to{opacity:1;transform:translateY(-50%)}}
@keyframes rglow{0%{opacity:0;filter:blur(3px);color:#6d6353}100%{opacity:.92;filter:blur(0);color:var(--lt)}}
.r-line s{color:var(--dm);text-decoration:line-through 2px transparent;transition:text-decoration-color .35s ease-out}
.r-line s.on{text-decoration-color:var(--ci)}
.r-line .tw-caret{background:var(--ci)}
.r-seal{position:absolute;left:50%;bottom:16%;width:58px;height:58px;margin-left:-29px;display:grid;grid-template-columns:1fr 1fr;border:3px solid var(--ci);color:var(--ci);transform:rotate(-6deg);opacity:0}
.r-seal i{font:900 18px/25px var(--serif);font-style:normal;text-align:center}
.r-seal.hit{opacity:1}
.motion .r-seal.hit{animation:rseal .45s cubic-bezier(.3,1.4,.5,1) both}
@keyframes rseal{0%{opacity:0;transform:rotate(-12deg) scale(2.3)}100%{opacity:1;transform:rotate(-6deg) scale(1)}}
.r-title{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;padding:18px;gap:10px;opacity:0;visibility:hidden;transition:opacity .8s}
.r-title.on{opacity:1;visibility:visible}
.r-title p{margin:0;opacity:0;transform:translateY(8px);transition:opacity 1s,transform 1s}
.r-title p.on{opacity:1;transform:none}
.r-t0{font:500 11px/1 var(--mono);letter-spacing:.26em;color:var(--dm)}
.r-t1{font:900 24px/1.55 var(--serif);letter-spacing:.12em;color:var(--lt);text-shadow:0 0 22px rgba(255,236,205,.22)}
.r-t2{font:400 12.5px/1.75 var(--sans);color:var(--dm)}
/* 片头倒数（学院倒数片）：3、2、1 */
.r-start{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:#1C1610;z-index:4;transition:opacity .35s}
.r-start.off{opacity:0;pointer-events:none}
.r-leader{position:absolute;width:62%;height:auto;max-height:86%;aspect-ratio:1}
.r-leader circle,.r-leader line{fill:none;stroke:rgba(242,232,213,.35);stroke-width:1.2}
.r-leader .ring2{stroke:rgba(242,232,213,.18)}
.r-leader .sweep{stroke:rgba(242,232,213,.14);stroke-width:38;stroke-dasharray:120;stroke-dashoffset:120}
.r-start.count .sweep{animation:sweep .8s linear infinite}
@keyframes sweep{to{stroke-dashoffset:0}}
.r-start b{position:relative;font:700 20px/1 var(--serif);letter-spacing:.5em;padding-left:.5em;color:var(--lt)}
.r-start.count b{font:700 64px/1 var(--type);letter-spacing:0;padding:0;color:rgba(242,232,213,.9)}
.r-flash{position:absolute;inset:0;background:#050403;opacity:0;pointer-events:none;z-index:7}
.motion .r-flash.go{animation:rfl .28s ease-out}
@keyframes rfl{0%{opacity:.5}100%{opacity:0}}
/* 身后打过来的光和光里的灰；前面几排椅背和人头 */
.t-beam{position:absolute;left:0;width:100%;z-index:1;pointer-events:none;transition:opacity 1.6s ease}
.theater.lit .t-beam{opacity:0}
.t-seats{position:relative;z-index:3;display:block;width:100%;height:clamp(78px,22vw,130px);margin-top:14px}
.t-seats .row>*{fill:#020101;transition:fill 2.6s}
.theater.lit .t-seats .row>*{fill:#17100B}
.s-reel .inner{padding:0 var(--gut);align-items:center}
.r-hint{display:flex;justify-content:space-between;align-items:center;gap:12px;width:100%;max-width:640px;margin:10px auto 0;font:400 12px/1.6 var(--sans);color:var(--dm)}
.r-hint button{background:none;border:0;color:var(--dm);font:500 12.5px/1 var(--sans);padding:10px 0;cursor:pointer;text-decoration:underline;text-underline-offset:4px;text-decoration-color:var(--rl)}
.exit{display:flex;flex-direction:column;align-items:center;text-align:center;width:100%;max-width:400px;margin:14px auto 0;opacity:0;visibility:hidden;transition:opacity .9s}
.exit.on{opacity:1;visibility:visible}
/* 出口是一张票：散场时递过来，票根上印着价格；点下去，票根沿齿孔撕下，再进场 */
.sx-ticket{--pp:#F1E6D0;--pp2:#E6D7BA;--ink:#1C1712;position:relative;display:flex;align-items:stretch;width:100%;max-width:340px;min-height:68px;margin:20px auto 0;color:var(--ink);text-decoration:none;-webkit-tap-highlight-color:transparent;
  filter:drop-shadow(0 12px 14px rgba(0,0,0,.55)) drop-shadow(0 0 22px rgba(242,228,200,.10))}
.tk-main,.tk-stub{position:relative;display:flex;align-items:center;justify-content:center;overflow:hidden;
  background:radial-gradient(120% 140% at 30% 0%,#F7EEDC 0%,var(--pp) 45%,var(--pp2) 100%);
  -webkit-mask:radial-gradient(circle at 0 0,transparent var(--a),#000 calc(var(--a) + .5px)) 0 0/51% 51% no-repeat,radial-gradient(circle at 100% 0,transparent var(--b),#000 calc(var(--b) + .5px)) 100% 0/51% 51% no-repeat,radial-gradient(circle at 0 100%,transparent var(--a),#000 calc(var(--a) + .5px)) 0 100%/51% 51% no-repeat,radial-gradient(circle at 100% 100%,transparent var(--b),#000 calc(var(--b) + .5px)) 100% 100%/51% 51% no-repeat;
          mask:radial-gradient(circle at 0 0,transparent var(--a),#000 calc(var(--a) + .5px)) 0 0/51% 51% no-repeat,radial-gradient(circle at 100% 0,transparent var(--b),#000 calc(var(--b) + .5px)) 100% 0/51% 51% no-repeat,radial-gradient(circle at 0 100%,transparent var(--a),#000 calc(var(--a) + .5px)) 0 100%/51% 51% no-repeat,radial-gradient(circle at 100% 100%,transparent var(--b),#000 calc(var(--b) + .5px)) 100% 100%/51% 51% no-repeat}
.tk-main{--a:6px;--b:8px;flex:1;flex-direction:column;gap:6px;padding:12px 14px 12px 18px}
.tk-stub{--a:8px;--b:6px;flex:none;width:86px;flex-direction:column;gap:5px;transform-origin:0 0}
/* 印刷的细框、齿孔 */
.tk-main::before{content:"";position:absolute;inset:7px 6px 7px 9px;border:1px solid rgba(28,23,18,.2);pointer-events:none}
.tk-stub::before{content:"";position:absolute;left:0;top:11px;bottom:11px;border-left:2px dotted rgba(28,23,18,.38);pointer-events:none}
.tk-main small{font:500 9px/1 var(--mono);letter-spacing:.34em;padding-left:.34em;color:rgba(28,23,18,.5)}
.tk-main #go-label{font:600 16.5px/1.2 var(--sans);letter-spacing:.08em}
.tk-price{font:900 19px/1 var(--serif);letter-spacing:.02em}
.tk-price[hidden]{display:none}
.tk-stub svg{width:22px;height:14px;stroke:currentColor;fill:none;stroke-width:1.6}
.tk-price:not([hidden])+svg{width:18px;height:11px;opacity:.7}
/* 纸面上一道慢慢扫过的光，隔几秒一次，不闪 */
.tk-main::after{content:"";position:absolute;top:0;bottom:0;left:0;width:40%;background:linear-gradient(100deg,transparent,rgba(255,252,244,.55),transparent);transform:translateX(-120%);pointer-events:none}
.motion .exit.on .tk-main::after{animation:sheen 7s ease-in-out 2.2s infinite}
@keyframes sheen{0%{transform:translateX(-120%)}22%,100%{transform:translateX(300%)}}
/* 散场时递过来 */
.motion .exit.on .sx-ticket{animation:tkin .9s cubic-bezier(.2,.8,.25,1) .2s both}
@keyframes tkin{0%{opacity:0;transform:translateY(18px) rotate(-3deg)}65%{opacity:1;transform:translateY(-2px) rotate(.5deg)}100%{opacity:1;transform:none}}
.sx-ticket:active .tk-main,.sx-ticket:active .tk-stub{filter:brightness(.96)}
.sx-ticket:focus-visible{outline:2px solid var(--au);outline-offset:6px}
@media (hover:hover){.sx-ticket{transition:transform .25s ease}.sx-ticket:hover{transform:translateY(-2px)}}
/* 撕票 */
.sx-ticket.torn .tk-stub{transform:translate(8px,12px) rotate(16deg);opacity:0;transition:transform .45s cubic-bezier(.5,0,.75,.5),opacity .4s ease-in .05s}
.sx-ticket.torn .tk-main{transform:translateX(-3px);transition:transform .18s ease-out}
.exit .alt{margin-top:12px;font:500 13.5px/1 var(--sans);color:#C8BBA2;text-decoration:none;border-bottom:1px solid var(--rl);padding:10px 0 5px}
.exit .legal{margin:16px 0 0;font:400 12px/1.7 var(--sans);color:var(--dm);max-width:300px}
.exit .keep-go{margin-top:18px;font:500 13.5px/1 var(--sans);color:var(--lt);text-decoration:none;padding:12px 6px}
.motion .exit.on .keep-go span{display:inline-block;animation:nudge 1.8s ease-in-out infinite}
@media (min-width:700px){.theater{padding-top:34px}.r-line{font-size:28px}.r-t1{font-size:32px}}

/* ── 第四幕：他的海报 ── */
.s-keep .kick{margin:0;font:500 11px/1 var(--mono);letter-spacing:.2em;color:var(--muted)}
.s-keep h2{margin:8px 0 4px;font:900 26px/1.3 var(--serif);letter-spacing:.04em}
.s-keep .sub{margin:0 0 12px;font:400 14px/1.7 var(--sans);color:var(--muted)}
.asks{display:grid;gap:8px}
.askb{display:flex;gap:12px;align-items:flex-start;text-align:left;width:100%;background:var(--paper);border:1px solid var(--rule);color:var(--ink);padding:12px 12px;min-height:52px;
  font:var(--w-read) 15.5px/1.65 var(--serif);cursor:pointer;transition:border-color .3s,background .3s}
.askb .ck{position:relative;flex:none;width:24px;height:24px;margin-top:1px}
.askb .ck svg{position:absolute;inset:-4px;width:32px;height:32px;overflow:visible}
.askb .ck .box{fill:none;stroke:var(--muted);stroke-width:1.4}
.askb .ck .ring{fill:none;stroke:var(--cin);stroke-width:2.2;stroke-linecap:round;stroke-dasharray:90;stroke-dashoffset:90;transition:stroke-dashoffset .5s ease-out}
.askb .ck .tick{fill:none;stroke:var(--cin);stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:24;stroke-dashoffset:24;transition:stroke-dashoffset .3s .25s ease-out}
.askb[aria-pressed="true"]{border-color:var(--cin);background:var(--card)}
.askb[aria-pressed="true"] .ring,.askb[aria-pressed="true"] .tick{stroke-dashoffset:0}

.card-wrap{margin:18px auto 0;width:min(292px,76vw);perspective:1500px}
.kcard{position:relative;aspect-ratio:3/4.35;transform-style:preserve-3d;transition:transform .95s cubic-bezier(.45,.05,.2,1);cursor:pointer}
.kcard.is-back{transform:rotateY(180deg)}
.kface{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;background:var(--photo);padding:12px 12px 14px;box-shadow:0 22px 34px -22px var(--shadow);display:flex;flex-direction:column}
.kface.b{transform:rotateY(180deg);padding:18px 16px}
.kface .art{flex:1 1 auto;min-height:0;background-size:cover;background-position:center 30%}
.kface .lbl{align-self:flex-start;margin-top:9px;font:700 10px/1 var(--type);letter-spacing:.14em;color:var(--cin);border:1.5px solid var(--cin);padding:4px 6px;transform:rotate(-2deg)}
.kface .en{margin:8px 0 0;font:700 9px/1 var(--type);letter-spacing:.32em;color:var(--muted)}
.kface .cn{margin:4px 0 0;font:900 26px/1.2 var(--serif);letter-spacing:.08em;color:var(--ink)}
.kface .sig{margin:4px 0 0;font:var(--w-read) 14px/1.6 var(--serif);color:var(--ink-2)}
.kface.b .kk{font:700 11px/1 var(--type);letter-spacing:.2em;color:var(--cin)}
.kface.b ol{list-style:none;margin:14px 0 0;padding:0;display:grid;gap:12px;counter-reset:q}
.kface.b li{position:relative;padding:0 0 10px 26px;border-bottom:1px dashed var(--rule);font:var(--w-read) 14.5px/1.65 var(--serif);color:var(--muted);counter-increment:q}
.kface.b li::before{content:counter(q);position:absolute;left:2px;top:0;font:700 12px/1.8 var(--type);color:var(--cin)}
.kface.b li.mine{color:var(--ink);font-weight:var(--w-strong)}
.kface.b li.mine svg{position:absolute;left:-7px;top:-6px;width:26px;height:30px;overflow:visible}
.kface.b li.mine path{fill:none;stroke:var(--cin);stroke-width:1.8;stroke-linecap:round;stroke-dasharray:80;stroke-dashoffset:80}
.kcard.is-back .kface.b li.mine path{transition:stroke-dashoffset .6s .75s ease-out;stroke-dashoffset:0}
.kface.b .kfoot{margin-top:auto;display:flex;justify-content:space-between;align-items:flex-end;font:500 10px/1.6 var(--mono);letter-spacing:.14em;color:var(--muted)}
.kface.b .kfoot .lbl{margin:0}
.keep-hint{margin:10px 0 0;text-align:center;font:400 13px/1.6 var(--sans);color:var(--muted)}
.keep-btns{display:flex;gap:10px;justify-content:center;margin-top:12px}
.keep-btns button{min-height:48px;padding:0 22px;font:600 15.5px/1 var(--sans);letter-spacing:.12em;cursor:pointer;border:1.5px solid var(--ink);background:transparent;color:var(--ink)}
.keep-btns .save{background:var(--btn-bg);color:var(--btn-fg);border-color:var(--btn-bg)}
.keep-btns button:disabled{opacity:.35;cursor:default}
.keep-end{margin:22px 0 0;text-align:center}
.keep-end a{font:500 13px/1 var(--sans);color:var(--muted);text-decoration:none;border-bottom:1px solid var(--rule);padding:10px 0 5px}
.shot{position:fixed;inset:0;z-index:60;background:rgba(10,8,6,.86);display:flex;flex-direction:column;align-items:center;justify-content:center;padding:20px}
.shot p{margin:0 0 12px;color:#F1E9D8;font:500 15px/1 var(--sans);letter-spacing:.1em}
.shot img{max-height:78svh;width:auto;box-shadow:0 20px 40px -20px #000}
.shot button{position:absolute;top:14px;right:14px;width:44px;height:44px;border:1px solid #F1E9D8;background:none;color:#F1E9D8;font:400 22px/1 var(--sans);cursor:pointer}

/* 声音开关 */
.snd{display:flex;align-items:center;justify-content:center;width:34px;height:34px;border:1px solid var(--rule);border-radius:50%;background:none;color:var(--muted);cursor:pointer;padding:0}
.snd svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.6}
.snd .on{display:none}.snd[aria-pressed="true"] .on{display:block}.snd[aria-pressed="true"] .off{display:none}
.snd[aria-pressed="true"]{color:var(--cin);border-color:var(--cin)}

/* 不要动效：全部直接摆好 */
@media (prefers-reduced-motion:reduce){
  html{scroll-snap-type:none}
  .folder .lid{transition:none}
  .kcard{transform:none!important;aspect-ratio:auto}.kface{position:relative;backface-visibility:visible}.kface.b{transform:none;margin-top:12px}
  .kface .art{height:300px;flex:none}
  .r-line{opacity:1}.exit{opacity:1;visibility:visible}
}
@media (min-width:900px){.sc .inner{max-width:480px}}