:root{--access-bg:#07100f;--access-paper:#f1efe8;--access-muted:rgba(241,239,232,.62);--access-line:rgba(241,239,232,.14);--access-gold:#edc973;--access-error:#ef9da5;--access-ease:cubic-bezier(.2,.72,.22,1)}
body.ppt-locked{overflow:hidden!important;background:var(--access-bg)!important}
body.ppt-locked>*:not(.ppt-access-gate):not(script){visibility:hidden!important;pointer-events:none!important}
.ppt-access-gate{position:fixed;z-index:10000;inset:0;display:grid!important;place-items:center;overflow:auto;padding:clamp(72px,8vh,100px) 24px 36px;color:var(--access-paper);background:
  radial-gradient(700px 520px at 16% 18%,rgba(93,139,111,.19),transparent 70%),
  radial-gradient(700px 540px at 88% 78%,rgba(194,141,44,.13),transparent 72%),
  var(--access-bg);font-family:"Microsoft YaHei UI","PingFang SC","Noto Sans CJK SC",sans-serif;-webkit-font-smoothing:antialiased;transition:opacity .45s var(--access-ease),visibility .45s}
.ppt-access-gate[hidden]{display:none!important}
.ppt-access-gate::before{content:"";position:fixed;inset:0;pointer-events:none;opacity:.2;background-image:radial-gradient(rgba(241,239,232,.2) .75px,transparent .75px);background-size:24px 24px;mask-image:linear-gradient(125deg,#000,transparent 76%)}
.ppt-access-gate::after{content:"";position:fixed;width:min(54vw,760px);aspect-ratio:1;right:-19vw;top:-26vw;border:1px solid rgba(237,201,115,.09);border-radius:50%;box-shadow:0 0 0 70px rgba(93,139,111,.018),0 0 0 165px rgba(93,139,111,.012);pointer-events:none}
.ppt-access-back{position:fixed;z-index:2;left:24px;top:22px;display:inline-flex;align-items:center;gap:10px;padding:10px 14px;border:1px solid var(--access-line);border-radius:99px;color:var(--access-muted);background:rgba(7,16,15,.58);font-size:12px;text-decoration:none;backdrop-filter:blur(14px);transition:.3s}.ppt-access-back:hover{color:var(--access-paper);border-color:rgba(237,201,115,.4)}
.ppt-access-shell{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1fr) minmax(340px,.62fr);gap:clamp(48px,8vw,120px);width:min(1120px,100%);padding:clamp(32px,5vw,68px);border:1px solid var(--access-line);border-radius:30px;background:linear-gradient(145deg,rgba(255,255,255,.045),rgba(255,255,255,.016));box-shadow:0 38px 110px rgba(0,0,0,.32);backdrop-filter:blur(20px)}
.ppt-access-copy{display:flex;flex-direction:column;justify-content:center;min-width:0}.ppt-access-brand{display:flex;align-items:baseline;gap:13px;margin-bottom:clamp(54px,8vh,90px)}.ppt-access-brand strong{font-family:Georgia,"Times New Roman",serif;font-size:21px;letter-spacing:.14em;font-weight:500}.ppt-access-brand span{color:var(--access-muted);font-size:11px;letter-spacing:.17em}
.ppt-access-eyebrow{display:flex;align-items:center;gap:10px;margin:0 0 22px;color:var(--access-gold);font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:9px;letter-spacing:.2em}.ppt-access-eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--access-gold);box-shadow:0 0 0 5px rgba(237,201,115,.11)}
.ppt-access-copy h1{margin:0;font-size:clamp(40px,5vw,70px);line-height:1.07;letter-spacing:-.055em;font-weight:520}.ppt-access-copy h1 em{display:block;margin-top:.2em;color:rgba(241,239,232,.5);font-size:.42em;line-height:1.25;letter-spacing:0;font-style:normal}.ppt-access-copy>p:last-child{max-width:590px;margin:28px 0 0;color:var(--access-muted);font-size:15px;line-height:1.85}
.ppt-access-form{align-self:center;padding:clamp(26px,3.5vw,40px);border:1px solid var(--access-line);border-radius:22px;background:rgba(3,10,9,.42)}.ppt-access-form label{display:block;margin-bottom:12px;color:var(--access-muted);font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:10px;letter-spacing:.15em}.ppt-access-input{display:block;overflow:hidden;border:1px solid var(--access-line);border-radius:13px;background:rgba(255,255,255,.04);transition:border-color .25s,box-shadow .25s}.ppt-access-input:focus-within{border-color:rgba(237,201,115,.62);box-shadow:0 0 0 4px rgba(237,201,115,.08)}
.ppt-access-input input{display:block;width:100%;min-width:0;height:56px;padding:0 15px;border:0;outline:0;color:var(--access-paper);caret-color:var(--access-gold);background:transparent;font:600 17px/1 "Microsoft YaHei UI","PingFang SC",sans-serif;letter-spacing:.04em;-webkit-text-security:none}.ppt-access-input input::placeholder{color:rgba(241,239,232,.3);font-weight:400;letter-spacing:0}
.ppt-access-error{min-height:22px;margin:9px 2px 6px;color:var(--access-error);font-size:12px;line-height:1.55}.ppt-access-submit{display:flex;align-items:center;justify-content:space-between;width:100%;min-height:56px;padding:13px 17px;border:0;border-radius:13px;color:#171207;background:var(--access-gold);font-weight:700;cursor:pointer;box-shadow:0 16px 42px rgba(194,141,44,.16);transition:transform .35s var(--access-ease),filter .25s}.ppt-access-submit:hover{transform:translateY(-2px);filter:brightness(1.04)}.ppt-access-submit:disabled{cursor:wait;opacity:.72;transform:none}.ppt-access-submit span:last-child{font-size:17px}.ppt-access-form small{display:block;margin-top:18px;color:rgba(241,239,232,.38);font-size:11px;line-height:1.7}
.ppt-access-form.is-error{animation:ppt-gate-shake .42s ease}.ppt-access-gate.is-approved{opacity:0;visibility:hidden;pointer-events:none}
@keyframes ppt-gate-shake{20%{transform:translateX(-7px)}40%{transform:translateX(6px)}60%{transform:translateX(-4px)}80%{transform:translateX(3px)}}
@media(max-width:800px){.ppt-access-gate{display:block!important;padding:82px 18px max(28px,env(safe-area-inset-bottom))}.ppt-access-back{position:absolute;left:18px;top:18px}.ppt-access-shell{grid-template-columns:1fr;gap:36px;padding:29px 22px;border-radius:22px}.ppt-access-brand{margin-bottom:48px}.ppt-access-copy h1{font-size:clamp(38px,11.5vw,54px)}.ppt-access-copy>p:last-child{margin-top:22px;font-size:14px}.ppt-access-form{padding:23px 18px}.ppt-access-gate::after{width:95vw;right:-44vw;top:-22vw}}
@media(prefers-reduced-motion:reduce){.ppt-access-gate,.ppt-access-submit{transition:none}.ppt-access-form.is-error{animation:none}}
@media print{body.ppt-locked .ppt-access-gate{display:grid!important}.ppt-access-back{display:none}}