/* ==========================================================================
   乐鱼官网 · 共享站点样式 /assets/site.css
   深水夜场观赛画册：深渊蓝底 + 奶油纸翻页 + 珊瑚橙点火
   ========================================================================== */

:root{
  --ink:#04141F;
  --ink-2:#072A3A;
  --tide:#0B4D5A;
  --leyu:#18A79F;
  --shallow:#8CE3D6;
  --coral:#FF6B4A;
  --coral-mist:#FFD8CC;
  --paper:#F4EBDD;
  --brown:#201813;
  --haze:#C9D8D6;

  --line:rgba(201,216,214,.22);
  --line-soft:rgba(201,216,214,.12);
  --line-ink:rgba(32,24,19,.16);

  --shell-max:1440px;
  --gut:clamp(18px,4vw,52px);

  --font-display:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-body:var(--font-display);
  --font-mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --step-display:clamp(46px,8vw,132px);
  --step-1:clamp(28px,3.6vw,52px);
  --step-2:clamp(21px,2.3vw,32px);
  --step-3:clamp(17px,1.4vw,20px);
  --step-body:clamp(15px,1.05vw,17px);
  --step-index:11px;

  --radius-s:10px;
  --radius-m:20px;
  --radius-organic:18px 46px 22px 40px;
  --shadow-deep:0 24px 60px rgba(4,20,31,.45);
  --ease:cubic-bezier(.22,.72,.2,1);
}

/* ---------- reset ---------- */
*,
*::before,
*::after{box-sizing:border-box}

html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}

body{
  margin:0;
  background-color:var(--ink);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:var(--step-body);
  font-weight:400;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

h1,h2,h3,h4,h5,h6{
  margin:0;
  font-weight:900;
  line-height:1.14;
  letter-spacing:-.035em;
  color:inherit;
}

p{margin:0 0 1em}
p:last-child{margin-bottom:0}

img,
picture,
svg,
video{display:block;max-width:100%;height:auto}

ul,ol{margin:0;padding:0;list-style:none}

a{color:inherit}

button{font-family:inherit}

main{display:block}

#main-content{display:block;scroll-margin-top:24px}

:focus-visible{
  outline:2px solid var(--coral);
  outline-offset:3px;
  border-radius:4px;
}

::selection{background:var(--leyu);color:var(--ink)}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:fixed;
  top:10px;
  left:10px;
  z-index:400;
  transform:translateY(-180%);
  padding:10px 20px;
  border-radius:999px;
  background:var(--coral);
  color:var(--brown);
  font-size:13px;
  font-weight:700;
  letter-spacing:.06em;
  text-decoration:none;
  transition:transform .18s var(--ease);
}
.skip-link:focus{transform:translateY(0)}

/* ---------- 阅读进度 ---------- */
.read-progress{
  position:fixed;
  top:0;
  left:0;
  right:0;
  height:3px;
  z-index:300;
  background:rgba(201,216,214,.1);
  pointer-events:none;
}
.read-progress__bar{
  display:block;
  width:0;
  height:100%;
  background:linear-gradient(90deg,var(--leyu) 0%,var(--shallow) 58%,var(--coral) 100%);
  box-shadow:0 0 14px rgba(24,167,159,.6);
  transition:width .14s linear;
}

/* ---------- 通用容器 ---------- */
.shell{
  width:min(calc(100% - var(--gut) * 2), var(--shell-max));
  margin-inline:auto;
}

/* ==========================================================================
   页头：杂志报头
   ========================================================================== */
.site-header{
  position:sticky;
  top:0;
  z-index:200;
  background-color:var(--ink);
  background-image:radial-gradient(120% 170% at 50% -70%, rgba(24,167,159,.22), transparent 62%);
  color:var(--paper);
  border-bottom:1px solid var(--line);
}

.site-header__inner{
  width:min(calc(100% - var(--gut) * 2), var(--shell-max));
  margin-inline:auto;
}

/* 顶部细线索引条 */
.site-header__top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:clamp(12px,3vw,40px);
  padding:9px 0;
  border-bottom:1px solid var(--line-soft);
  font-size:var(--step-index);
  letter-spacing:.18em;
  color:var(--haze);
}
.site-header__descriptor{
  margin:0;
  letter-spacing:.18em;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.utility-list{
  display:flex;
  align-items:center;
  gap:clamp(12px,2vw,28px);
  flex:0 0 auto;
}
.utility-item{display:inline-flex}
.utility-link{
  color:var(--haze);
  text-decoration:none;
  letter-spacing:.18em;
  padding-bottom:2px;
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.utility-link:hover{
  color:var(--shallow);
  border-bottom-color:var(--leyu);
}

/* 居中刊头 */
.masthead{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:14px;
  padding:clamp(10px,1.6vw,18px) 0 clamp(8px,1.2vw,12px);
}
.masthead__spacer{display:block;min-height:1px}
.masthead__brand{
  grid-column:2;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:center;
  gap:8px 12px;
  text-align:center;
  text-decoration:none;
  color:var(--paper);
}
.masthead__mark{
  display:grid;
  place-items:center;
  width:clamp(32px,3.4vw,40px);
  aspect-ratio:1;
  font-size:clamp(16px,1.7vw,20px);
  font-weight:900;
  color:var(--ink);
  line-height:1;
  background:linear-gradient(140deg,var(--shallow) 0%,var(--leyu) 58%,var(--tide) 100%);
  border-radius:46% 54% 58% 42%/52% 44% 56% 48%;
  box-shadow:0 0 26px rgba(24,167,159,.35);
}
.masthead__name{
  font-size:clamp(20px,2.6vw,32px);
  font-weight:900;
  letter-spacing:-.02em;
  line-height:1;
  transition:color .2s var(--ease);
}
.masthead__brand:hover .masthead__name{color:var(--shallow)}
.masthead__tag{
  flex-basis:100%;
  font-size:var(--step-index);
  letter-spacing:.34em;
  color:var(--haze);
  line-height:1;
}

/* 移动导航按钮 */
.nav-toggle{
  grid-column:3;
  justify-self:end;
  display:none;
  align-items:center;
  gap:9px;
  padding:8px 14px;
  background-color:rgba(11,77,90,.6);
  color:var(--paper);
  border:1px solid var(--line);
  border-radius:999px;
  font-size:var(--step-index);
  letter-spacing:.2em;
  cursor:pointer;
  transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);
}
.nav-toggle:hover{
  color:var(--shallow);
  border-color:var(--leyu);
}
.nav-toggle__bars{
  display:inline-flex;
  flex-direction:column;
  justify-content:space-between;
  width:16px;
  height:11px;
}
.nav-toggle__bars span{
  display:block;
  height:2px;
  width:100%;
  background:currentColor;
  border-radius:2px;
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1){transform:translateY(4.5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3){transform:translateY(-4.5px) rotate(-45deg)}
.nav-toggle__label{line-height:1}

/* 报头下导航带 */
.site-header__bar{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:clamp(10px,2vw,24px);
  padding-bottom:clamp(8px,1.2vw,12px);
}
.site-nav{grid-column:2}
.site-nav__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:center;
  gap:clamp(2px,.8vw,8px);
}
.site-nav__item{display:inline-flex}
.site-nav__link{
  display:inline-block;
  padding:7px 12px;
  color:var(--paper);
  font-size:clamp(13px,1.05vw,15px);
  letter-spacing:.06em;
  text-decoration:none;
  border-bottom:2px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);
}
.site-nav__link:hover{
  color:var(--shallow);
  border-bottom-color:rgba(24,167,159,.65);
}
.site-nav__link[aria-current="page"]{
  color:var(--coral);
  border-bottom-color:var(--coral);
}
.site-nav__panel-foot{display:none}
.site-nav__hint{
  margin:0;
  font-size:var(--step-index);
  letter-spacing:.26em;
  color:var(--haze);
}
.site-header__cta{
  grid-column:3;
  justify-self:end;
}

/* ==========================================================================
   按钮
   ========================================================================== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 22px;
  border:1px solid transparent;
  border-radius:999px;
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  line-height:1.2;
  text-decoration:none;
  cursor:pointer;
  transition:background-color .2s var(--ease),color .2s var(--ease),
             border-color .2s var(--ease),transform .2s var(--ease),
             box-shadow .2s var(--ease);
}
.btn--primary{
  background-color:var(--coral);
  color:var(--brown);
  box-shadow:0 8px 24px rgba(255,107,74,.24);
}
.btn--primary:hover{
  background-color:var(--coral-mist);
  color:var(--brown);
  transform:translateY(-1px);
}
.btn--ghost{
  background-color:transparent;
  color:var(--paper);
  border-color:rgba(201,216,214,.4);
}
.btn--ghost:hover{
  color:var(--shallow);
  border-color:var(--shallow);
  background-color:rgba(24,167,159,.12);
}

/* ==========================================================================
   通用排版与基础组件
   ========================================================================== */
.section{
  padding-block:clamp(48px,7vw,110px);
}
.section--paper{
  background-color:var(--paper);
  color:var(--brown);
  background-image:radial-gradient(90% 120% at 100% 0%, rgba(255,107,74,.1), transparent 60%);
}

.index-label,
.eyebrow{
  display:inline-block;
  font-size:var(--step-index);
  font-weight:700;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--shallow);
}
.section--paper .index-label,
.section--paper .eyebrow{color:var(--tide)}

.num{
  font-family:var(--font-mono);
  font-weight:700;
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
  color:var(--shallow);
}

.rule{
  display:block;
  width:100%;
  height:1px;
  border:0;
  margin:clamp(20px,3vw,40px) 0;
  background:linear-gradient(90deg,var(--line),transparent);
}
.section--paper .rule{background:linear-gradient(90deg,var(--line-ink),transparent)}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border-radius:999px;
  background-color:rgba(24,167,159,.16);
  border:1px solid rgba(24,167,159,.4);
  color:var(--shallow);
  font-size:var(--step-index);
  letter-spacing:.16em;
}
.tag--coral{
  background-color:rgba(255,107,74,.16);
  border-color:rgba(255,107,74,.5);
  color:var(--coral-mist);
}

.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:var(--step-index);
  letter-spacing:.18em;
  color:var(--haze);
}
.breadcrumb a{
  color:var(--haze);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.breadcrumb a:hover{color:var(--shallow);border-bottom-color:var(--leyu)}
.breadcrumb__sep{color:rgba(201,216,214,.45)}
.breadcrumb [aria-current="page"]{color:var(--paper)}

.prose{
  max-width:72ch;
  font-size:var(--step-body);
  line-height:1.85;
  color:var(--paper);
}
.prose > * + *{margin-top:1em}
.prose h2{
  font-size:var(--step-2);
  margin-top:1.8em;
  letter-spacing:-.03em;
}
.prose h3{
  font-size:var(--step-3);
  margin-top:1.6em;
  color:var(--shallow);
}
.prose a{
  color:var(--shallow);
  text-decoration:none;
  border-bottom:1px solid var(--leyu);
}
.prose a:hover{color:var(--coral)}
.prose--on-paper{color:var(--brown)}
.prose--on-paper h3{color:var(--tide)}
.prose--on-paper a{color:var(--tide);border-bottom-color:var(--coral)}
.prose ul,
.prose ol{
  padding-left:1.2em;
  list-style:disc;
}
.prose ol{list-style:decimal}
.prose li + li{margin-top:.4em}

.grid{
  display:grid;
  gap:clamp(16px,2.4vw,32px);
}
.grid--12{grid-template-columns:repeat(12,minmax(0,1fr))}

.card{
  position:relative;
  padding:clamp(18px,2.4vw,30px);
  border-radius:var(--radius-organic);
  border:1px solid rgba(201,216,214,.16);
  background-color:var(--ink-2);
  background-image:linear-gradient(160deg,rgba(11,77,90,.7),rgba(7,42,58,.92));
  color:var(--paper);
  box-shadow:var(--shadow-deep);
}
.card--paper{
  background-color:var(--paper);
  background-image:none;
  color:var(--brown);
  border-color:var(--line-ink);
  box-shadow:0 18px 40px rgba(32,24,19,.12);
}
.card__title{
  font-size:var(--step-3);
  margin-bottom:.5em;
}

.panel{
  padding:clamp(16px,2vw,24px);
  border-radius:var(--radius-m);
  background-color:rgba(11,77,90,.5);
  border:1px solid var(--line);
}

/* ---------- 响应式图片容器（页面阶段放置图片/占位） ---------- */
.media-frame{
  position:relative;
  display:block;
  overflow:hidden;
  border-radius:var(--radius-organic);
  background-color:var(--ink-2);
  background-image:
    radial-gradient(120% 100% at 20% 0%, rgba(24,167,159,.4), transparent 62%),
    linear-gradient(150deg,var(--tide),var(--ink));
  isolation:isolate;
}
.media-frame img{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
}
.media-frame--wide{aspect-ratio:16/9}
.media-frame--tall{aspect-ratio:3/4}
.media-frame--square{aspect-ratio:1/1}
.media-frame__tag{
  position:absolute;
  top:12px;
  left:12px;
  z-index:2;
  padding:4px 10px;
  border-radius:999px;
  background-color:rgba(4,20,31,.7);
  border:1px solid rgba(140,227,214,.45);
  color:var(--shallow);
  font-size:var(--step-index);
  letter-spacing:.16em;
}
.media-frame__caption{
  position:absolute;
  left:14px;
  right:14px;
  bottom:12px;
  z-index:2;
  font-size:var(--step-index);
  letter-spacing:.16em;
  color:rgba(244,235,221,.82);
}

/* ---------- 滚动显现 ---------- */
[data-reveal]{
  opacity:0;
  transform:translateY(18px);
  transition:opacity .7s var(--ease),transform .7s var(--ease);
  will-change:opacity,transform;
}
[data-reveal].is-visible{
  opacity:1;
  transform:none;
}

/* ==========================================================================
   页脚：水下索引带
   ========================================================================== */
.site-footer{
  position:relative;
  overflow:hidden;
  background-color:var(--ink);
  color:var(--paper);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";
  position:absolute;
  left:-10%;
  right:-10%;
  bottom:-45%;
  height:80%;
  background:radial-gradient(50% 100% at 50% 100%, rgba(24,167,159,.24), transparent 72%);
  pointer-events:none;
}
.site-footer__inner{
  position:relative;
  width:min(calc(100% - var(--gut) * 2), var(--shell-max));
  margin-inline:auto;
  padding:clamp(40px,6vw,84px) 0 clamp(20px,3vw,32px);
}

.footer-masthead{
  display:grid;
  gap:clamp(18px,2.6vw,30px);
  padding-bottom:clamp(24px,4vw,46px);
  border-bottom:1px solid var(--line);
}
.footer-brand__line{
  margin:0;
  max-width:22ch;
  font-size:clamp(24px,3.6vw,46px);
  font-weight:900;
  line-height:1.22;
  letter-spacing:-.035em;
  color:var(--paper);
  background-image:linear-gradient(96deg,var(--paper) 34%,var(--shallow) 72%,var(--leyu) 100%);
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
}

.footer-path{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:0;
}
.footer-path__node{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding-right:clamp(30px,5vw,64px);
  font-size:var(--step-index);
  letter-spacing:.26em;
  color:var(--haze);
}
.footer-path__node::before{
  content:"";
  width:9px;
  height:9px;
  flex:0 0 auto;
  border-radius:50%;
  background-color:var(--leyu);
  box-shadow:0 0 0 4px rgba(24,167,159,.16);
}
.footer-path__node:first-child::before{
  background-color:var(--coral);
  box-shadow:0 0 0 4px rgba(255,107,74,.18);
}
.footer-path__node:not(:last-child)::after{
  content:"";
  position:absolute;
  right:clamp(10px,2vw,26px);
  top:50%;
  width:clamp(14px,3vw,34px);
  height:1px;
  background-image:linear-gradient(90deg,var(--leyu),transparent);
}

.footer-cols{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr)) minmax(0,1.7fr);
  gap:clamp(24px,3.4vw,48px);
  padding:clamp(28px,4vw,52px) 0;
}
.footer-col{min-width:0}
.footer-col__title{
  margin:0 0 14px;
  font-size:var(--step-index);
  font-weight:700;
  letter-spacing:.28em;
  color:var(--shallow);
}
.footer-col__list{display:grid;gap:9px}
.footer-item{display:block}
.footer-link{
  display:inline-block;
  color:var(--haze);
  font-size:14px;
  letter-spacing:.04em;
  text-decoration:none;
  padding-bottom:2px;
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.footer-link:hover{
  color:var(--paper);
  border-bottom-color:var(--leyu);
}

.footer-contact{display:grid;gap:10px;margin:0}
.footer-contact__row{
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  gap:10px;
  align-items:baseline;
}
.footer-contact__label{
  margin:0;
  font-size:var(--step-index);
  letter-spacing:.18em;
  color:var(--haze);
}
.footer-contact__value{
  margin:0;
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:0;
  color:var(--paper);
  overflow-wrap:anywhere;
}
.footer-note{
  margin:14px 0 0;
  max-width:44ch;
  font-size:12px;
  line-height:1.8;
  color:rgba(201,216,214,.72);
}

.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:clamp(10px,2vw,26px);
  padding-top:clamp(16px,2.4vw,26px);
  border-top:1px solid var(--line);
  font-size:12px;
  letter-spacing:.1em;
  color:rgba(201,216,214,.75);
}
.footer-bottom__copy,
.footer-bottom__address,
.footer-bottom__icp{margin:0}
.footer-bottom__icp{
  margin-left:auto;
  font-family:var(--font-mono);
  letter-spacing:.03em;
  color:var(--shallow);
}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width:1023px){
  .site-header__top{letter-spacing:.14em}
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-col--contact{grid-column:1 / -1}
}

@media (max-width:900px){
  .site-nav__link{padding:7px 9px}
  .site-nav__list{gap:0}
  .grid--12{grid-template-columns:repeat(6,minmax(0,1fr))}
}

@media (max-width:767px){
  .site-header{
    position:static;
    background-image:none;
  }
  .site-header__top{display:none}

  .masthead{
    grid-template-columns:1fr auto 1fr;
    gap:8px;
    padding:10px 0 6px;
  }
  .masthead__brand{justify-content:flex-start;text-align:left;gap:6px 10px}
  .masthead__tag{flex-basis:100%;letter-spacing:.24em;font-size:10px}
  .nav-toggle{display:inline-flex}

  .site-header__bar{display:block;padding-bottom:0}
  .site-header__cta{display:none}

  .site-nav{
    display:none;
    margin-top:6px;
    padding:6px 0 10px;
    border-top:1px solid var(--line-soft);
  }
  .site-nav[data-open]{display:block}
  .site-nav__list{flex-direction:column;align-items:stretch;gap:0}
  .site-nav__link{
    display:block;
    padding:13px 6px;
    font-size:15px;
    letter-spacing:.08em;
    border-bottom:1px solid var(--line-soft);
    border-left:2px solid transparent;
  }
  .site-nav__link:hover{border-bottom-color:var(--line-soft)}
  .site-nav__link[aria-current="page"]{
    border-bottom-color:var(--line-soft);
    border-left-color:var(--coral);
    padding-left:14px;
    background-color:rgba(24,167,159,.1);
  }
  .site-nav__panel-foot{
    display:block;
    padding:14px 6px 2px;
    font-size:var(--step-index);
    letter-spacing:.24em;
    color:var(--haze);
  }

  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px}
  .footer-col--contact{grid-column:1 / -1}
  .footer-bottom__icp{margin-left:0;width:100%}
}

@media (max-width:560px){
  .footer-cols{grid-template-columns:minmax(0,1fr)}
  .footer-path__node{padding-right:26px}
  .footer-path__node:not(:last-child)::after{width:12px;right:8px}
  .btn{padding:10px 18px;font-size:12px}
  .footer-bottom{font-size:11px;letter-spacing:.06em}
  .grid--12{grid-template-columns:minmax(0,1fr)}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,
  *::before,
  *::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  [data-reveal]{
    opacity:1;
    transform:none;
  }
  .read-progress__bar{transition:none}
}