/* =====================================================================
   天天娱乐 · 共享站点样式 /assets/site.css
   语言：深夜数字游乐园 × 主题展区说明牌（暮色紫 / 星夜深紫 / 霓虹青 / 暖金）
   ===================================================================== */

/* ---------- 1. 重置 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,figcaption,blockquote,dl,dt,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,picture,svg,video,canvas{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
details summary{list-style:none}
[hidden]{display:none!important}
[id]{scroll-margin-top:9rem}

/* ---------- 2. 变量 ---------- */
:root{
  --tt-purple:#4B2E83;
  --tt-night:#1B1330;
  --tt-cream:#F6F1E7;
  --tt-stone:#3A3A45;
  --tt-neon:#25E0D0;
  --tt-gold:#F2B441;
  --tt-coral:#FF6B57;
  --tt-moss:#6E8B5A;
  --tt-clay:#C1743F;
  --tt-silver:#C9CBDA;
  --tt-rule:rgba(58,58,69,.16);
  --tt-rule-dark:rgba(201,203,218,.22);
  --tt-shell:1180px;
  --tt-cut:16px;
  --tt-radius:16px;
  --tt-progress:0;
  --tt-font-display:"站酷快乐体","Noto Sans SC","Source Han Sans SC",sans-serif;
  --tt-font-body:"Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
  --tt-font-mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  --tt-ease:cubic-bezier(.22,.7,.28,1);
  --tt-shadow:0 18px 34px -24px rgba(27,19,48,.6),0 4px 0 -2px rgba(27,19,48,.06);
  --tt-cut-lg:22px;
}

/* ---------- 3. 基础排版（中文） ---------- */
body{
  background:var(--tt-cream);
  color:var(--tt-stone);
  font-family:var(--tt-font-body);
  font-size:17px;
  line-height:1.8;
  letter-spacing:.01em;
  overflow-x:hidden;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{font-family:var(--tt-font-display);font-weight:900;line-height:1.16;letter-spacing:.012em;color:var(--tt-stone)}
h1{font-size:clamp(2.3rem,6vw,4.4rem)}
h2{font-size:clamp(1.6rem,3.6vw,2.6rem)}
h3{font-size:clamp(1.15rem,2.2vw,1.5rem)}
h4{font-size:1.06rem}
p{max-width:44ch}
strong,b{color:var(--tt-purple)}
::selection{background:var(--tt-neon);color:#10202a}

/* ---------- 4. 焦点与可访问 ---------- */
:focus-visible{outline:3px solid var(--tt-neon);outline-offset:3px;border-radius:2px}
.tt-header :focus-visible,
.tt-footer :focus-visible,
.tt-section--purple :focus-visible,
.tt-section--night :focus-visible{outline-color:var(--tt-gold)}
.tt-sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.tt-skip{
  position:absolute;left:50%;top:0;z-index:140;
  transform:translate(-50%,-160%);
  background:var(--tt-night);color:var(--tt-neon);
  padding:.7rem 1.4rem;font-size:.88rem;letter-spacing:.1em;
  border-radius:0 0 12px 12px;
  transition:transform .22s var(--tt-ease);
}
.tt-skip:focus{transform:translate(-50%,0)}

/* ---------- 5. 头部 · 居中刊头 ---------- */
.tt-header{
  position:sticky;top:0;z-index:90;isolation:isolate;
  color:var(--tt-cream);
  background:
    radial-gradient(1100px 300px at 50% -150px,rgba(37,224,208,.20),transparent 72%),
    linear-gradient(180deg,#1B1330 0%,#38225F 58%,#4B2E83 100%);
  border-bottom:1px solid rgba(201,203,218,.2);
  box-shadow:0 22px 40px -34px rgba(27,19,48,.9);
}
.tt-header::before{
  content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;opacity:.6;
  background-image:
    radial-gradient(1.7px 1.7px at 11% 28%,rgba(246,241,231,.9),transparent 100%),
    radial-gradient(1.6px 1.6px at 33% 72%,rgba(37,224,208,.85),transparent 100%),
    radial-gradient(1.8px 1.8px at 62% 24%,rgba(246,241,231,.65),transparent 100%),
    radial-gradient(1.5px 1.5px at 79% 66%,rgba(242,180,65,.8),transparent 100%),
    radial-gradient(1.4px 1.4px at 92% 36%,rgba(255,107,87,.7),transparent 100%);
}
.tt-masthead{
  position:relative;z-index:1;
  width:min(var(--tt-shell),92vw);margin-inline:auto;
  display:grid;gap:.35rem;justify-items:center;text-align:center;
  padding:1.1rem 0 .7rem;
}
.tt-masthead__kicker{
  font-size:.7rem;letter-spacing:.24em;color:var(--tt-silver);text-transform:uppercase;
  transition:opacity .3s var(--tt-ease),visibility .3s;
}
.tt-masthead__brand{display:inline-flex;align-items:center;gap:.7rem}
.tt-masthead__mark{
  display:grid;place-items:center;
  width:2.5rem;height:2.5rem;
  font-family:var(--tt-font-display);font-weight:900;font-size:1.25rem;color:#10202a;
  background:linear-gradient(140deg,var(--tt-neon),#8df2e9);
  clip-path:polygon(24% 0,100% 0,100% 76%,76% 100%,0 100%,0 24%);
  box-shadow:0 0 24px -4px rgba(37,224,208,.9);
  transition:width .3s var(--tt-ease),height .3s var(--tt-ease),font-size .3s var(--tt-ease);
}
.tt-masthead__name{
  font-family:var(--tt-font-display);font-weight:900;
  font-size:clamp(1.65rem,4.2vw,2.5rem);letter-spacing:.06em;color:var(--tt-cream);
  text-shadow:0 0 1px rgba(37,224,208,.95),0 0 20px rgba(37,224,208,.35);
  transition:font-size .3s var(--tt-ease);
}
.tt-masthead__tag{
  font-size:.78rem;letter-spacing:.2em;color:var(--tt-gold);
  transition:opacity .3s var(--tt-ease),visibility .3s;
}
@media (min-width:900px){
  .tt-masthead{
    grid-template-columns:1fr auto 1fr;align-items:center;
    gap:1.4rem;text-align:left;padding:1.1rem 0 .75rem;
  }
  .tt-masthead__kicker{grid-column:1;justify-self:start;text-align:left}
  .tt-masthead__brand{grid-column:2;justify-self:center}
  .tt-masthead__tag{grid-column:3;justify-self:end;text-align:right}
}
.tt-header[data-compact] .tt-masthead{padding:.45rem 0 .35rem;gap:0}
.tt-header[data-compact] .tt-masthead__kicker,
.tt-header[data-compact] .tt-masthead__tag{opacity:0;visibility:hidden}
.tt-header[data-compact] .tt-masthead__mark{width:1.8rem;height:1.8rem;font-size:.92rem}
.tt-header[data-compact] .tt-masthead__name{font-size:1.2rem}

/* ---------- 6. 控制台行 · 游戏机式栏目轨 ---------- */
.tt-console{
  position:relative;z-index:1;
  width:min(var(--tt-shell),92vw);margin-inline:auto;
  display:flex;align-items:center;gap:.7rem;
  padding:.4rem 0 .7rem;
  border-top:1px solid rgba(201,203,218,.14);
}
.tt-nav{
  flex:1 1 auto;
  overflow-x:auto;overflow-y:hidden;
  scrollbar-width:none;-ms-overflow-style:none;
  -webkit-user-select:none;user-select:none;
}
.tt-nav::-webkit-scrollbar{display:none}
.tt-nav__list{display:flex;gap:.35rem;margin-inline:auto;padding:.2rem .1rem .35rem;min-width:max-content}
.tt-nav__link{
  display:inline-block;padding:.5rem .95rem;
  font-size:.9rem;letter-spacing:.1em;color:var(--tt-silver);
  border:1px solid transparent;
  clip-path:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px);
  transition:color .2s var(--tt-ease),background .2s var(--tt-ease),transform .2s var(--tt-ease),box-shadow .2s var(--tt-ease);
}
.tt-nav__link:hover{color:var(--tt-cream);background:rgba(37,224,208,.14);transform:translateY(-1px)}
.tt-nav__link[aria-current="page"]{
  color:#101f28;font-weight:700;
  background:linear-gradient(120deg,var(--tt-neon),#8ff2ea);
  box-shadow:0 0 22px -6px rgba(37,224,208,.95);
}
.tt-dock{display:flex;align-items:center;gap:.5rem;flex:0 0 auto}
.tt-burger{
  display:none;align-items:center;gap:.6rem;
  padding:.55rem 1rem;font-size:.84rem;letter-spacing:.14em;color:var(--tt-cream);
  border:1px solid rgba(201,203,218,.4);
  clip-path:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px);
  transition:background .2s var(--tt-ease),border-color .2s var(--tt-ease);
}
.tt-burger:hover{background:rgba(37,224,208,.14);border-color:var(--tt-neon)}
.tt-burger__bars{position:relative;width:18px;height:12px;flex:0 0 auto}
.tt-burger__bars::before,.tt-burger__bars::after{
  content:"";position:absolute;left:0;right:0;height:2px;background:var(--tt-neon);
  transition:transform .26s var(--tt-ease);
}
.tt-burger__bars::before{top:0}
.tt-burger__bars::after{bottom:0}
.tt-burger[aria-expanded="true"] .tt-burger__bars::before{transform:translateY(5px) rotate(45deg)}
.tt-burger[aria-expanded="true"] .tt-burger__bars::after{transform:translateY(-5px) rotate(-45deg)}

/* 阅读进度轨 */
.tt-progress{position:relative;z-index:1;height:3px;background:rgba(201,203,218,.16);overflow:hidden}
.tt-progress__fill{
  display:block;height:100%;width:100%;transform:scaleX(var(--tt-progress));
  transform-origin:left center;
  background:linear-gradient(90deg,var(--tt-neon),var(--tt-gold) 68%,var(--tt-coral));
  box-shadow:0 0 16px rgba(37,224,208,.85);
}

/* ---------- 7. 头部窄屏形态 ---------- */
@media (max-width:860px){
  .tt-dock{display:none}
  .tt-burger{display:inline-flex}
  .tt-console{flex-wrap:wrap;padding-bottom:.35rem}
  .tt-nav{
    order:3;flex-basis:100%;
    max-height:0;overflow:hidden;
    transition:max-height .36s var(--tt-ease);
  }
  .tt-nav[data-open]{max-height:min(66vh,560px);overflow-y:auto}
  .tt-nav__list{flex-direction:column;width:100%;min-width:0;gap:.15rem;padding:.35rem 0 .7rem}
  .tt-nav__link{display:block;padding:.8rem .9rem;border-bottom:1px solid rgba(201,203,218,.16)}
  .tt-nav__link[aria-current="page"]{border-bottom-color:transparent}
}

/* ---------- 8. 分区与容器 ---------- */
.tt-shell{width:min(var(--tt-shell),92vw);margin-inline:auto}
.tt-shell--narrow{width:min(760px,92vw);margin-inline:auto}
.tt-section{padding:clamp(2.8rem,6.5vw,5.2rem) 0;position:relative}
.tt-section--cream{background:var(--tt-cream);color:var(--tt-stone)}
.tt-section--stone{background:#EDE6D8;color:var(--tt-stone)}
.tt-section--purple{background:linear-gradient(180deg,var(--tt-purple),#37205F);color:var(--tt-silver)}
.tt-section--night{background:radial-gradient(900px 420px at 18% 0%,rgba(75,46,131,.7),transparent 72%),var(--tt-night);color:var(--tt-silver)}
.tt-section--purple h1,.tt-section--purple h2,.tt-section--purple h3,
.tt-section--night h1,.tt-section--night h2,.tt-section--night h3{color:var(--tt-cream)}
.tt-section--purple strong,.tt-section--night strong,.tt-section--purple b,.tt-section--night b{color:var(--tt-gold)}
.tt-prose{max-width:38rem;font-size:1.03rem;line-height:1.85}
.tt-lead{font-size:clamp(1rem,1.6vw,1.16rem);line-height:1.75;color:#4b4b56;max-width:42ch}
.tt-section--purple .tt-lead,.tt-section--night .tt-lead{color:var(--tt-silver)}
.tt-band{
  height:6px;
  background:linear-gradient(90deg,var(--tt-neon),var(--tt-gold) 46%,var(--tt-coral) 74%,var(--tt-moss));
  clip-path:polygon(0 0,100% 0,calc(100% - 26px) 100%,0 100%);
}
.tt-trail{height:1px;background:repeating-linear-gradient(90deg,var(--tt-clay) 0 14px,transparent 14px 28px);opacity:.7}

/* ---------- 9. 网格 ---------- */
.tt-grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(1rem,2.2vw,1.75rem)}
.tt-grid > *{grid-column:1/-1;min-width:0}
@media (min-width:760px){
  .tt-grid > .tt-span-3{grid-column:span 3}
  .tt-grid > .tt-span-4{grid-column:span 4}
  .tt-grid > .tt-span-6{grid-column:span 6}
  .tt-grid > .tt-span-8{grid-column:span 8}
  .tt-grid > .tt-span-9{grid-column:span 9}
}

/* ---------- 10. 说明牌 / 面板 ---------- */
.tt-placard{
  position:relative;
  background:#FFFDF8;border:1px solid var(--tt-rule);
  padding:1.15rem 1.25rem 1.35rem;
  clip-path:polygon(var(--tt-cut) 0,100% 0,100% calc(100% - var(--tt-cut)),calc(100% - var(--tt-cut)) 100%,0 100%,0 var(--tt-cut));
  box-shadow:var(--tt-shadow);
  transition:transform .28s var(--tt-ease),box-shadow .28s var(--tt-ease),border-color .28s var(--tt-ease);
}
.tt-placard:hover{transform:translateY(-4px) rotate(-1.4deg);border-color:rgba(37,224,208,.6);box-shadow:0 26px 44px -26px rgba(27,19,48,.55)}
.tt-placard--dark{background:rgba(246,241,231,.07);border-color:var(--tt-rule-dark);backdrop-filter:blur(8px);box-shadow:none}
.tt-placard__no{
  display:block;font-family:var(--tt-font-mono);font-variant-numeric:tabular-nums;
  font-size:1.9rem;font-weight:700;line-height:1;color:var(--tt-clay);margin-bottom:.35rem;
}
.tt-placard--dark .tt-placard__no{color:var(--tt-gold)}
.tt-placard__cat{display:block;font-size:.7rem;letter-spacing:.18em;text-transform:uppercase;color:var(--tt-moss);margin-bottom:.5rem}
.tt-placard--dark .tt-placard__cat{color:var(--tt-neon)}
.tt-placard__title{font-family:var(--tt-font-display);font-size:1.14rem;color:var(--tt-stone);margin-bottom:.4rem}
.tt-placard--dark .tt-placard__title{color:var(--tt-cream)}
.tt-placard__text{font-size:.94rem;line-height:1.75;color:#57575f;max-width:36ch}
.tt-placard--dark .tt-placard__text{color:var(--tt-silver)}

/* ---------- 11. 图片容器（页面阶段放图） ---------- */
.tt-frame{
  position:relative;display:block;overflow:hidden;
  aspect-ratio:16/9;border:1px solid var(--tt-rule-dark);
  background:
    radial-gradient(320px 180px at 78% 18%,rgba(37,224,208,.35),transparent 70%),
    radial-gradient(260px 200px at 12% 88%,rgba(242,180,65,.28),transparent 72%),
    linear-gradient(140deg,#2A1C4A,#4B2E83 58%,#1B1330);
  clip-path:polygon(var(--tt-cut-lg) 0,100% 0,100% calc(100% - var(--tt-cut-lg)),calc(100% - var(--tt-cut-lg)) 100%,0 100%,0 var(--tt-cut-lg));
}
.tt-frame img{width:100%;height:100%;object-fit:cover;position:relative;z-index:1}
.tt-frame::after{
  content:"";position:absolute;inset:0;z-index:2;pointer-events:none;
  background-image:repeating-linear-gradient(0deg,rgba(246,241,231,.06) 0 1px,transparent 1px 5px);
}
.tt-frame__label{
  position:absolute;left:0;bottom:0;z-index:3;
  padding:.5rem .85rem;font-size:.7rem;letter-spacing:.16em;
  background:rgba(27,19,48,.76);color:var(--tt-neon);backdrop-filter:blur(6px);
}
.tt-frame--wide{aspect-ratio:21/9}
.tt-frame--square{aspect-ratio:1}
.tt-frame--tall{aspect-ratio:4/5}

/* ---------- 12. 标签 / 胶囊 / 面包屑 ---------- */
.tt-tag{
  display:inline-flex;align-items:center;gap:.35rem;
  padding:.22rem .68rem;font-size:.74rem;letter-spacing:.12em;
  border-radius:999px;
  background:rgba(75,46,131,.1);border:1px solid rgba(75,46,131,.26);color:var(--tt-purple);
  transition:transform .2s var(--tt-ease),background .2s var(--tt-ease);
}
.tt-tag:hover{transform:translateY(-2px)}
.tt-tag--gold{background:rgba(242,180,65,.16);border-color:rgba(242,180,65,.55);color:#8a5b00}
.tt-tag--neon{background:rgba(37,224,208,.15);border-color:rgba(37,224,208,.55);color:#0a6a62}
.tt-tag--coral{background:rgba(255,107,87,.15);border-color:rgba(255,107,87,.55);color:#a8331f}
.tt-tag--moss{background:rgba(110,139,90,.16);border-color:rgba(110,139,90,.5);color:#415a2f}
.tt-chip{
  display:inline-flex;align-items:center;gap:.4rem;
  padding:.4rem .95rem;font-size:.82rem;letter-spacing:.1em;
  border:1px solid var(--tt-rule);color:var(--tt-stone);background:#fff;
  clip-path:polygon(9px 0,100% 0,100% calc(100% - 9px),calc(100% - 9px) 100%,0 100%,0 9px);
  transition:transform .2s var(--tt-ease),border-color .2s var(--tt-ease),color .2s var(--tt-ease);
}
.tt-chip:hover{transform:translateY(-2px);border-color:var(--tt-neon);color:var(--tt-purple)}
.tt-chip[aria-pressed="true"]{background:var(--tt-purple);border-color:var(--tt-purple);color:var(--tt-cream)}
.tt-crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:.45rem;font-size:.8rem;letter-spacing:.1em;color:var(--tt-moss)}
.tt-crumbs a:hover{color:var(--tt-clay)}
.tt-crumbs__sep{color:var(--tt-clay);opacity:.7}

/* ---------- 13. 时间轴 / 折叠 ---------- */
.tt-timeline{position:relative;padding-left:1.4rem}
.tt-timeline::before{
  content:"";position:absolute;left:.4rem;top:.5rem;bottom:.5rem;width:2px;
  background:linear-gradient(180deg,var(--tt-neon),var(--tt-gold) 55%,var(--tt-coral));
  clip-path:polygon(0 0,100% 0,100% 100%,0 100%);
}
.tt-timeline__item{position:relative;padding:0 0 1.6rem 1.1rem}
.tt-timeline__item::before{
  content:"";position:absolute;left:-1.14rem;top:.62rem;width:10px;height:10px;
  background:var(--tt-cream);border:2px solid var(--tt-neon);transform:rotate(45deg);
}
.tt-section--night .tt-timeline__item::before,.tt-section--purple .tt-timeline__item::before{background:var(--tt-night)}
.tt-details{
  background:#FFFDF8;border:1px solid var(--tt-rule);margin-bottom:.7rem;overflow:hidden;
  clip-path:polygon(12px 0,100% 0,100% calc(100% - 12px),calc(100% - 12px) 100%,0 100%,0 12px);
  box-shadow:0 10px 24px -20px rgba(27,19,48,.6);
}
.tt-details__summary{
  display:flex;align-items:center;justify-content:space-between;gap:1rem;
  padding:.95rem 1.15rem;font-weight:700;cursor:pointer;
  transition:background .2s var(--tt-ease),color .2s var(--tt-ease);
}
.tt-details__summary::-webkit-details-marker{display:none}
.tt-details__summary::after{content:"＋";color:var(--tt-coral);font-size:1.05rem;line-height:1}
.tt-details[open] .tt-details__summary::after{content:"－"}
.tt-details__summary:hover{background:rgba(37,224,208,.1)}
.tt-details__body{padding:0 1.15rem 1.15rem;font-size:.96rem;color:#57575f}
.tt-details__body p{max-width:52ch}

/* ---------- 14. 按钮 / 数字 / 角标 ---------- */
.tt-btn{
  display:inline-flex;align-items:center;gap:.5rem;
  padding:.72rem 1.35rem;font-size:.94rem;font-weight:700;letter-spacing:.06em;
  clip-path:polygon(12px 0,100% 0,100% calc(100% - 12px),calc(100% - 12px) 100%,0 100%,0 12px);
  transition:transform .2s var(--tt-ease),box-shadow .2s var(--tt-ease),background .2s var(--tt-ease),color .2s var(--tt-ease);
}
.tt-btn--primary{background:linear-gradient(120deg,var(--tt-neon),#8ff2ea);color:#10202a;box-shadow:0 14px 26px -16px rgba(37,224,208,.95)}
.tt-btn--gold{background:linear-gradient(120deg,var(--tt-gold),#ffd98c);color:#3a2803;box-shadow:0 14px 26px -16px rgba(242,180,65,.95)}
.tt-btn--ghost{border:1px solid rgba(201,203,218,.45);color:var(--tt-cream)}
.tt-btn--line{border:1px solid var(--tt-stone);color:var(--tt-stone)}
.tt-btn:hover{transform:translateY(-2px)}
.tt-btn--ghost:hover{border-color:var(--tt-neon);background:rgba(37,224,208,.14);color:#fff}
.tt-btn--line:hover{border-color:var(--tt-purple);color:var(--tt-purple);background:rgba(75,46,131,.07)}
.tt-btn--sm{padding:.5rem 1rem;font-size:.84rem}
.tt-num{
  display:inline-block;
  font-family:var(--tt-font-mono);font-variant-numeric:tabular-nums;
  font-weight:900;line-height:1;letter-spacing:-.01em;
  font-size:clamp(2.5rem,7vw,4.2rem);color:var(--tt-gold);
}
.tt-num--neon{color:var(--tt-neon)}
.tt-num--coral{color:var(--tt-coral)}
.tt-num--clay{color:var(--tt-clay)}
.tt-label{
  font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;
  font-weight:700;color:var(--tt-moss);
}
.tt-label--gold{color:var(--tt-gold)}
.tt-badge{
  display:inline-flex;align-items:center;gap:.5rem;
  padding:.32rem .8rem;font-size:.76rem;letter-spacing:.1em;
  border:1px dashed rgba(201,203,218,.45);border-radius:999px;color:var(--tt-silver);
}
.tt-badge__dot{width:7px;height:7px;background:var(--tt-neon);transform:rotate(45deg);box-shadow:0 0 10px rgba(37,224,208,.9)}
.tt-badge--icp{border-color:rgba(242,180,65,.55);color:var(--tt-gold)}

/* ---------- 15. 页脚 · 星空说明台 ---------- */
.tt-footer{
  position:relative;overflow:hidden;
  background:
    radial-gradient(900px 420px at 12% 0%,rgba(75,46,131,.75),transparent 72%),
    radial-gradient(600px 300px at 88% 100%,rgba(37,224,208,.16),transparent 70%),
    var(--tt-night);
  color:var(--tt-silver);
  border-top:1px solid rgba(37,224,208,.28);
}
.tt-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.55;
  background-image:
    radial-gradient(1.7px 1.7px at 8% 22%,rgba(246,241,231,.85),transparent 100%),
    radial-gradient(1.5px 1.5px at 22% 68%,rgba(37,224,208,.8),transparent 100%),
    radial-gradient(1.8px 1.8px at 46% 34%,rgba(246,241,231,.6),transparent 100%),
    radial-gradient(1.4px 1.4px at 68% 76%,rgba(242,180,65,.75),transparent 100%),
    radial-gradient(1.6px 1.6px at 86% 28%,rgba(255,107,87,.65),transparent 100%);
}
.tt-footer__inner{
  position:relative;z-index:1;
  width:min(var(--tt-shell),92vw);margin-inline:auto;
  display:grid;grid-template-columns:1fr;gap:1.9rem;
  padding:clamp(2.4rem,5vw,3.6rem) 0 2.2rem;
}
@media (min-width:680px){.tt-footer__inner{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1000px){.tt-footer__inner{grid-template-columns:1.5fr repeat(3,minmax(0,1fr));gap:2.4rem}}
.tt-footer__brand{display:grid;gap:.55rem;align-content:start}
.tt-footer__name{
  font-family:var(--tt-font-display);font-weight:900;
  font-size:1.45rem;letter-spacing:.06em;color:var(--tt-cream);
}
.tt-footer__note{font-size:.92rem;line-height:1.75;color:var(--tt-silver);max-width:34ch}
.tt-footer__col{display:grid;gap:.55rem;align-content:start}
.tt-footer__heading{
  font-family:var(--tt-font-body);font-weight:700;font-size:.76rem;
  letter-spacing:.22em;color:var(--tt-gold);
}
.tt-footer__list{display:grid;gap:.5rem}
.tt-footer__list a{
  position:relative;display:inline-block;padding-left:.95rem;
  font-size:.94rem;color:var(--tt-silver);
  transition:color .2s var(--tt-ease),transform .2s var(--tt-ease);
}
.tt-footer__list a::before{
  content:"";position:absolute;left:0;top:.62em;width:6px;height:6px;
  background:var(--tt-neon);transform:rotate(45deg);opacity:.6;
  transition:opacity .2s var(--tt-ease);
}
.tt-footer__list a:hover{color:var(--tt-cream);transform:translateX(3px)}
.tt-footer__list a:hover::before{opacity:1}
.tt-footer__bottom{border-top:1px solid var(--tt-rule-dark);background:rgba(0,0,0,.22)}
.tt-footer__meta{
  position:relative;z-index:1;
  width:min(var(--tt-shell),92vw);margin-inline:auto;
  padding:1.4rem 0 2.2rem;
  display:flex;flex-wrap:wrap;gap:1rem 2rem;
  align-items:flex-start;justify-content:space-between;
}
.tt-footer__info{display:grid;gap:.45rem;font-size:.85rem;line-height:1.75;color:var(--tt-silver);max-width:80ch}
.tt-footer__info b{color:var(--tt-cream)}
.tt-footer__contact{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem}
.tt-footer__addr{color:var(--tt-silver)}
.tt-footer__legal{display:flex;flex-wrap:wrap;align-items:center;gap:.7rem;font-size:.8rem}
.tt-copy{
  display:inline-flex;align-items:center;gap:.4rem;
  padding:.26rem .72rem;font-size:.74rem;letter-spacing:.1em;
  color:var(--tt-neon);border:1px solid rgba(37,224,208,.55);border-radius:999px;
  transition:background .2s var(--tt-ease),color .2s var(--tt-ease),border-color .2s var(--tt-ease);
}
.tt-copy:hover{background:rgba(37,224,208,.16)}
.tt-copy[data-copied]{color:var(--tt-gold);border-color:rgba(242,180,65,.65)}
.tt-top{
  display:inline-flex;align-items:center;gap:.5rem;
  padding:.55rem 1.05rem;font-size:.8rem;letter-spacing:.14em;color:var(--tt-cream);
  border:1px solid rgba(201,203,218,.4);
  clip-path:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px);
  transition:background .2s var(--tt-ease),transform .2s var(--tt-ease),border-color .2s var(--tt-ease);
}
.tt-top::before{content:"▲";font-size:.6rem;color:var(--tt-neon)}
.tt-top:hover{background:rgba(37,224,208,.14);border-color:var(--tt-neon);transform:translateY(-2px)}

/* ---------- 16. 滚动显现 ---------- */
[data-reveal]{
  opacity:0;transform:translateY(20px);
  transition:opacity .6s var(--tt-ease),transform .6s var(--tt-ease);
  transition-delay:calc(var(--tt-delay,0) * 1ms);
}
[data-reveal].is-in{opacity:1;transform:none}

/* ---------- 17. 降低动效 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms!important;animation-iteration-count:1!important;
    transition-duration:.001ms!important;transition-delay:0ms!important;
  }
  [data-reveal]{opacity:1!important;transform:none!important}
  .tt-placard:hover,.tt-top:hover,.tt-btn:hover,.tt-chip:hover,.tt-tag:hover{transform:none}
}