/* ==========================================================================
   开心娱乐 · 共享站点样式 /assets/site.css
   深海蓝 + 珊瑚橙 + 薄荷绿 / 暖灰底 / 玻璃层与实色层并置
   ========================================================================== */

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--header-h) + 18px);
}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,figcaption,blockquote,dl,dd{margin:0;padding:0}
ul,ol{list-style:none}
img,svg,picture{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
::selection{background:var(--coral-soft);color:var(--navy-deep)}

/* ---------- 2. 设计令牌 ---------- */
:root{
  --navy:#0B2A4A;
  --navy-deep:#061A30;
  --coral:#FF6B4A;
  --coral-soft:#FFB39F;
  --mint:#5FE0B0;
  --mint-soft:#C9F7E7;
  --sand:#F4F1EC;
  --paper:#FFFDF8;
  --ink:#17324D;
  --muted:#5C6B7A;
  --line:#D9D2C7;
  --focus:#FFD166;

  --font-display:"ZCOOL KuaiLe","Alibaba PuHuiTi Heavy","PingFang SC","Microsoft YaHei",sans-serif;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --font-body:"Noto Sans SC","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;

  --header-h:76px;
  --shell:1240px;
  --pad:clamp(18px,4vw,48px);
  --radius:20px;
  --radius-sm:12px;
  --measure:68ch;
  --ease:cubic-bezier(.22,.61,.36,1);
  --shadow-card:0 20px 46px -28px rgba(6,26,48,.5);
}

@media (max-width:1080px){:root{--header-h:66px}}

/* ---------- 3. 中文排版基线 ---------- */
body{
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.8;
  color:var(--ink);
  background-color:var(--sand);
  background-image:
    radial-gradient(circle at 8% -12%,rgba(95,224,176,.18),transparent 42%),
    radial-gradient(circle at 96% 2%,rgba(255,107,74,.14),transparent 40%);
  background-repeat:no-repeat;
  min-height:100vh;
  overflow-x:hidden;
}
h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:800;
  line-height:1.14;
  letter-spacing:-.02em;
  color:var(--navy);
}
h1{font-size:clamp(2.4rem,6vw,4.6rem)}
h2{font-size:clamp(1.8rem,3.6vw,2.9rem)}
h3{font-size:clamp(1.15rem,2vw,1.55rem)}
h4{font-size:1.05rem;letter-spacing:0}
p{max-width:var(--measure)}
strong{font-weight:700;color:var(--navy)}

main{padding-top:var(--header-h)}

/* ---------- 4. 焦点与跳转 ---------- */
:focus-visible{
  outline:3px solid var(--focus);
  outline-offset:3px;
  border-radius:8px;
}
.skip-link{
  position:fixed;
  top:10px;
  left:var(--pad);
  z-index:400;
  padding:11px 20px;
  border-radius:10px;
  background:var(--focus);
  color:var(--navy-deep);
  font-family:var(--font-body);
  font-weight:700;
  font-size:.92rem;
  transform:translateY(-180%);
  transition:transform .18s var(--ease);
}
.skip-link:focus,
.skip-link:focus-visible{transform:translateY(0)}

/* ---------- 5. 页头 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:200;
  height:var(--header-h);
  color:var(--paper);
  background-color:transparent;
  background-image:linear-gradient(180deg,rgba(6,26,48,.74),rgba(6,26,48,.12) 72%,rgba(6,26,48,0));
  transition:background-color .22s var(--ease),box-shadow .22s var(--ease);
}
.site-header.is-solid{
  background-color:var(--navy);
  background-image:none;
  box-shadow:0 14px 36px -26px rgba(6,26,48,.95);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:3px;
  background:linear-gradient(90deg,var(--coral) 0%,var(--coral) 46%,var(--mint) 62%,var(--mint) 100%);
  transform:scaleX(var(--progress,0));
  transform-origin:0 50%;
  opacity:0;
  transition:opacity .22s var(--ease);
  pointer-events:none;
}
.site-header.is-solid::after{opacity:1}

.header-inner{
  width:100%;
  max-width:var(--shell);
  height:100%;
  margin:0 auto;
  padding:0 var(--pad);
  display:flex;
  align-items:center;
  gap:clamp(12px,2.4vw,32px);
}

/* 品牌锁定 */
.brand{
  display:inline-flex;
  align-items:center;
  gap:11px;
  flex:0 0 auto;
}
.brand-mark{
  width:38px;height:38px;
  display:grid;place-items:center;
  background:var(--coral);
  color:var(--navy-deep);
  font-family:var(--font-display);
  font-size:21px;
  font-weight:800;
  border-radius:12px 12px 12px 3px;
  box-shadow:0 0 0 3px rgba(255,107,74,.2);
  transition:transform .18s var(--ease);
}
.brand:hover .brand-mark{transform:rotate(-7deg)}
.brand-word{display:flex;flex-direction:column;line-height:1.12}
.brand-name{
  font-family:var(--font-display);
  font-size:19px;
  font-weight:800;
  letter-spacing:.03em;
  color:var(--paper);
}
.brand-tag{
  margin-top:4px;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.2em;
  color:var(--coral-soft);
}

/* 主导航 */
.primary-nav{
  display:flex;
  align-items:center;
  gap:clamp(8px,1.6vw,24px);
  margin-left:auto;
}
.nav-list{
  display:flex;
  align-items:center;
  gap:clamp(0px,.6vw,8px);
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 11px;
  border-radius:10px;
  font-size:.95rem;
  font-weight:500;
  color:rgba(255,253,248,.82);
  transition:color .18s var(--ease),background-color .18s var(--ease);
}
.nav-link:hover{color:var(--paper);background:rgba(255,253,248,.1)}
.nav-link[aria-current="page"]{color:var(--paper);font-weight:700}
.nav-link[aria-current="page"]::after{
  content:"";
  position:absolute;
  left:11px;right:11px;bottom:7px;
  height:3px;
  border-radius:3px;
  background:var(--coral);
}
.nav-actions{
  display:flex;
  align-items:center;
  gap:10px;
  margin-left:8px;
}

/* 移动端开关 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  margin-left:auto;
  min-height:44px;
  padding:0 15px;
  border-radius:999px;
  border:2px solid rgba(255,253,248,.34);
  color:var(--paper);
  font-size:.86rem;
  font-weight:700;
  letter-spacing:.04em;
  transition:background-color .18s var(--ease),border-color .18s var(--ease);
}
.nav-toggle:hover{background:rgba(255,253,248,.12);border-color:var(--mint)}
.nav-toggle__bars{display:inline-flex;flex-direction:column;gap:4px;width:18px}
.nav-toggle__bars i{
  display:block;height:2px;border-radius:2px;
  background:currentColor;
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

body.is-nav-open{overflow:hidden}

/* ---------- 6. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 20px;
  border:2px solid transparent;
  border-radius:999px;
  font-family:var(--font-body);
  font-size:.93rem;
  font-weight:700;
  letter-spacing:.02em;
  text-align:center;
  cursor:pointer;
  transition:transform .16s var(--ease),background-color .18s var(--ease),
             color .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn--primary{
  background:var(--coral);
  color:var(--navy-deep);
  box-shadow:0 12px 24px -16px rgba(255,107,74,.95);
}
.btn--primary:hover{background:var(--coral-soft)}
.btn--ghost{
  border-color:rgba(255,253,248,.42);
  color:var(--paper);
}
.btn--ghost:hover{background:rgba(255,253,248,.12);border-color:var(--mint)}
.btn--mint{background:var(--mint);color:var(--navy-deep)}
.btn--mint:hover{background:var(--mint-soft)}
.btn--quiet{
  background:rgba(11,42,74,.07);
  color:var(--navy);
  border-color:rgba(11,42,74,.12);
}
.btn--quiet:hover{background:rgba(11,42,74,.14)}

/* ---------- 7. 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(48px,7vw,96px);
  padding:clamp(48px,7vw,88px) 0 34px;
  background:var(--navy-deep);
  color:rgba(255,253,248,.78);
  overflow:hidden;
  isolation:isolate;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-34%;left:-14%;
  width:min(560px,78vw);height:min(560px,78vw);
  background:radial-gradient(circle,rgba(95,224,176,.18),rgba(95,224,176,0) 64%);
  pointer-events:none;
  z-index:0;
}
.footer-glow{
  position:absolute;
  right:-12%;bottom:-46%;
  width:min(640px,86vw);height:min(640px,86vw);
  background:radial-gradient(circle,rgba(255,107,74,.28),rgba(255,107,74,0) 66%);
  pointer-events:none;
  z-index:0;
}
.footer-inner{
  position:relative;
  z-index:1;
  max-width:var(--shell);
  margin:0 auto;
  padding:0 var(--pad);
}
.footer-grid{
  display:grid;
  grid-template-columns:minmax(220px,1.4fr) minmax(120px,.72fr) minmax(120px,.72fr) minmax(220px,1.14fr);
  gap:clamp(26px,3.6vw,56px);
  padding-bottom:clamp(30px,4.4vw,52px);
  border-bottom:1px solid rgba(255,253,248,.14);
}
.footer-brand .brand-name{color:var(--paper)}
.footer-note{
  margin-top:18px;
  max-width:33ch;
  font-size:.95rem;
  line-height:1.78;
  color:rgba(255,253,248,.7);
}
.footer-mono{
  font-family:var(--font-mono);
  font-size:.78rem;
  letter-spacing:.06em;
  color:rgba(255,253,248,.5);
}
.footer-brand .footer-mono{margin-top:16px}
.footer-mono--strong{
  display:block;
  width:100%;
  margin-top:4px;
  font-size:.92rem;
  letter-spacing:.01em;
  color:var(--paper);
  word-break:break-all;
}
.footer-col__title{
  margin-bottom:16px;
  font-family:var(--font-mono);
  font-size:.74rem;
  font-weight:600;
  letter-spacing:.22em;
  color:var(--mint);
}
.footer-links li+li{margin-top:11px}
.footer-links a{
  display:inline-block;
  font-size:.95rem;
  color:rgba(255,253,248,.76);
  border-bottom:1px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.footer-links a:hover{color:var(--coral-soft);border-color:rgba(255,107,74,.6)}
.footer-contact li{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:2px 8px;
  font-size:.9rem;
  line-height:1.62;
  color:rgba(255,253,248,.68);
}
.footer-contact li+li{margin-top:13px}
.footer-hours{
  font-size:.82rem;
  color:rgba(255,253,248,.5);
}
.copy-btn{
  display:inline-flex;
  align-items:center;
  padding:3px 10px;
  border-radius:999px;
  border:1px solid rgba(255,253,248,.3);
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.1em;
  color:var(--mint);
  vertical-align:middle;
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.copy-btn:hover{background:rgba(95,224,176,.14);border-color:var(--mint)}
.copy-btn.is-copied{background:var(--mint);border-color:var(--mint);color:var(--navy-deep)}
.footer-base{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px 28px;
  padding-top:24px;
}
.footer-legal{display:flex;flex-wrap:wrap;gap:6px 22px}
.footer-legal a{
  font-size:.88rem;
  color:rgba(255,253,248,.66);
  transition:color .18s var(--ease);
}
.footer-legal a:hover{color:var(--paper)}
.footer-base__spacer{margin-left:auto}
.footer-copy,.footer-icp{
  font-family:var(--font-mono);
  font-size:.76rem;
  letter-spacing:.04em;
  color:rgba(255,253,248,.48);
  max-width:none;
}

/* ---------- 8. 布局容器与章节节奏 ---------- */
.wrap{
  width:100%;
  max-width:var(--shell);
  margin:0 auto;
  padding:0 var(--pad);
}
.section{padding:clamp(48px,7vw,96px) 0}
.section--tight{padding:clamp(30px,4.6vw,60px) 0}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:.75rem;
  letter-spacing:.22em;
  color:var(--coral);
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--coral)}
.chapter-num{
  font-family:var(--font-mono);
  font-size:.8rem;
  letter-spacing:.2em;
  color:var(--muted);
}
.lede{
  font-family:var(--font-serif);
  font-weight:600;
  font-size:clamp(1.15rem,2.1vw,1.55rem);
  line-height:1.62;
  color:var(--navy);
  max-width:56ch;
}
.prose{max-width:var(--measure)}
.prose p+p{margin-top:1.05em}
.prose h3{margin:1.6em 0 .5em}
.prose ul{list-style:none;margin:1em 0}
.prose ul li{position:relative;padding-left:1.4em}
.prose ul li+li{margin-top:.55em}
.prose ul li::before{
  content:"";
  position:absolute;
  left:0;top:.72em;
  width:7px;height:7px;
  border-radius:2px;
  background:var(--coral);
}
.mono{font-family:var(--font-mono);letter-spacing:.02em}
.muted{color:var(--muted)}

/* ---------- 9. 面包屑 ---------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:.76rem;
  letter-spacing:.05em;
  color:var(--muted);
}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--line)}
.breadcrumb a{color:var(--muted);transition:color .18s var(--ease)}
.breadcrumb a:hover{color:var(--coral)}

/* ---------- 10. 网格 ---------- */
.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--split{grid-template-columns:minmax(0,5fr) minmax(0,7fr)}
@media (max-width:900px){
  .grid--2,.grid--3,.grid--split{grid-template-columns:minmax(0,1fr)}
}

/* ---------- 11. 卡片与标签 ---------- */
.card{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:clamp(20px,3vw,30px);
  box-shadow:var(--shadow-card);
}
.card--glass{
  background:rgba(255,253,248,.14);
  border-color:rgba(255,253,248,.32);
  color:var(--paper);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  box-shadow:none;
}
.card--glass h2,.card--glass h3{color:var(--paper)}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 11px;
  border-radius:999px;
  border:1px solid transparent;
  background:var(--mint-soft);
  color:var(--navy);
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.06em;
}
.tag--coral{background:var(--coral-soft);color:var(--navy-deep)}
.tag--navy{background:var(--navy);color:var(--paper)}
.callout{
  display:grid;
  gap:6px;
  padding:18px 20px;
  border-radius:var(--radius-sm);
  border-left:5px solid var(--mint);
  background:var(--mint-soft);
  color:var(--ink);
  font-size:.94rem;
  line-height:1.75;
}
.callout strong{color:var(--navy)}

/* ---------- 12. 图片容器基础规则 ---------- */
.media{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius);
  background:linear-gradient(150deg,var(--navy) 0%,var(--navy-deep) 58%,#123A5F 100%);
  isolation:isolate;
}
.media::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:0;
  background:
    radial-gradient(circle at 78% 10%,rgba(255,107,74,.42),transparent 56%),
    radial-gradient(circle at 12% 90%,rgba(95,224,176,.3),transparent 54%);
  pointer-events:none;
}
.media>img,.media>svg,.media>picture,.media>picture>img{
  position:relative;
  z-index:1;
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}
.media--wide{aspect-ratio:16/9}
.media--square{aspect-ratio:1/1}
.media--tall{aspect-ratio:4/5}
.media--banner{aspect-ratio:21/9}
@media (max-width:620px){
  .media--banner{aspect-ratio:16/10}
  .media--tall{aspect-ratio:3/4}
}

/* ---------- 13. 标签页 ---------- */
.tabs__bar{
  display:flex;
  gap:8px;
  overflow-x:auto;
  padding-bottom:8px;
  scrollbar-width:thin;
}
.tabs__btn{
  flex:0 0 auto;
  min-height:44px;
  padding:0 18px;
  border-radius:999px;
  border:2px solid var(--line);
  background:var(--paper);
  color:var(--navy);
  font-size:.9rem;
  font-weight:700;
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.tabs__btn:hover{border-color:var(--coral-soft)}
.tabs__btn[aria-selected="true"]{
  background:var(--navy);
  border-color:var(--navy);
  color:var(--paper);
}
.tabs__panel{display:none;margin-top:22px}
.tabs__panel.is-active{display:block;animation:panelIn .18s var(--ease)}
@keyframes panelIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

/* ---------- 14. 折叠面板 ---------- */
.accordion__item{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  overflow:hidden;
}
.accordion__item+.accordion__item{margin-top:12px}
.accordion__trigger{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  width:100%;
  min-height:52px;
  padding:16px 20px;
  text-align:left;
  font-weight:700;
  font-size:1rem;
  color:var(--navy);
  transition:background-color .18s var(--ease);
}
.accordion__trigger:hover{background:rgba(11,42,74,.04)}
.accordion__trigger::after{
  content:"+";
  flex:0 0 auto;
  font-family:var(--font-mono);
  font-size:1.24rem;
  line-height:1;
  color:var(--coral);
  transition:transform .2s var(--ease);
}
.accordion__trigger[aria-expanded="true"]::after{transform:rotate(45deg)}
.accordion__panel{
  display:none;
  padding:0 20px 20px;
  font-size:.95rem;
  line-height:1.78;
  color:var(--ink);
}
.accordion__panel.is-open{display:block}

/* ---------- 15. 显现动效 ---------- */
.reveal{transition:opacity .55s var(--ease),transform .55s var(--ease)}
.reveal[data-armed="true"]{opacity:0;transform:translateY(10px)}
.reveal[data-armed="true"].is-visible{opacity:1;transform:none}

/* ---------- 16. 响应式 ---------- */
@media (max-width:1080px){
  .nav-toggle{display:inline-flex}
  .primary-nav{
    position:fixed;
    top:var(--header-h);
    left:0;right:0;bottom:0;
    display:flex;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    margin:0;
    padding:clamp(20px,5vw,40px) var(--pad) 48px;
    background:linear-gradient(165deg,var(--navy) 0%,var(--navy-deep) 100%);
    overflow-y:auto;
    opacity:0;
    visibility:hidden;
    transform:translateY(-10px);
    transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s var(--ease);
  }
  .primary-nav[data-open="true"]{
    opacity:1;
    visibility:visible;
    transform:none;
  }
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-link{
    height:auto;
    padding:16px 12px;
    font-size:1.12rem;
    border-bottom:1px solid rgba(255,253,248,.13);
    border-radius:0;
  }
  .nav-link[aria-current="page"]{color:var(--mint)}
  .nav-link[aria-current="page"]::after{display:none}
  .nav-actions{
    flex-direction:column;
    align-items:stretch;
    gap:12px;
    margin:26px 0 0;
  }
  .nav-actions .btn{width:100%;min-height:48px}

  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-brand{grid-column:1 / -1}
  .footer-base__spacer{margin-left:0}
}

@media (max-width:620px){
  :root{--header-h:64px}
  body{font-size:16px}
  .brand-mark{width:34px;height:34px;font-size:19px}
  .brand-name{font-size:17px}
  .brand-tag{font-size:9px;letter-spacing:.16em}
  .nav-toggle{padding:0 12px;font-size:.8rem}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px}
  .footer-note{max-width:none}
  .footer-base{flex-direction:column;align-items:flex-start;gap:12px}
  .footer-copy,.footer-icp{font-size:.72rem}
}

/* ---------- 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;
  }
  .reveal,.reveal[data-armed="true"]{opacity:1 !important;transform:none !important}
}