/* ============================================================
   凤凰体育主站 · 共享 Site Kit（/assets/site.css）
   1 重置 / 2 变量 / 3 基础排版 / 4 通用组件 / 5 头部 / 6 页脚 / 7 响应式
   ============================================================ */

/* ---------- 1. 重置 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dd,hr{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{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%}
hr{border:0;height:1px;background:var(--fx-line)}

/* ---------- 2. 变量 ---------- */
:root{
  --fx-orange:#E84A2A;
  --fx-ink:#0B1E2D;
  --fx-cyan:#1FC7D4;
  --fx-gold:#F2B705;
  --fx-white:#F7F9FB;
  --fx-ink-2:#122A3A;
  --fx-slate:#8FA3B0;
  --fx-orange-lite:#FF7A5C;
  --fx-teal:#0F7F8A;
  --fx-line:rgba(11,30,45,.13);
  --fx-line-invert:rgba(143,163,176,.24);
  --fx-ink-soft:rgba(11,30,45,.78);
  --fx-white-soft:rgba(247,249,251,.82);
  --fx-max:1240px;
  --fx-gutter:clamp(16px,4vw,44px);
  --fx-sans:"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans CJK SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --fx-mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
  --fx-ease:cubic-bezier(.2,.7,.3,1);
  --fx-shadow:0 18px 40px -30px rgba(11,30,45,.55);
}

/* ---------- 3. 基础排版（中文优先） ---------- */
body{
  background:var(--fx-white);
  color:var(--fx-ink);
  font-family:var(--fx-sans);
  font-size:clamp(15px,1.02vw,16.5px);
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{font-weight:800;line-height:1.14;letter-spacing:-.02em}
h1{font-size:clamp(2rem,4.6vw,3.4rem)}
h2{font-size:clamp(1.5rem,2.8vw,2.2rem)}
h3{font-size:clamp(1.12rem,1.8vw,1.4rem)}
h4{font-size:1rem}
::selection{background:var(--fx-orange);color:#fff}
:focus-visible{outline:2px solid var(--fx-cyan);outline-offset:3px;border-radius:2px}

.fx-container{width:100%;max-width:var(--fx-max);margin-inline:auto;padding-inline:var(--fx-gutter)}
.fx-display{font-size:clamp(2.3rem,6.2vw,4.6rem);font-weight:900;line-height:.98;letter-spacing:-.035em}
.fx-num{font-family:var(--fx-mono);font-variant-numeric:tabular-nums;font-weight:700;letter-spacing:-.01em}
.fx-lead{font-size:clamp(1.02rem,1.5vw,1.2rem);line-height:1.7;color:var(--fx-ink-soft);max-width:62ch}
.fx-muted{color:var(--fx-slate);font-size:.84rem}
.fx-eyebrow{display:inline-flex;align-items:center;gap:.6rem;font-size:.72rem;letter-spacing:.22em;text-transform:uppercase;color:var(--fx-teal);font-weight:700}
.fx-eyebrow::before{content:"";width:26px;height:2px;background:var(--fx-orange)}
.fx-annot{font-size:.72rem;letter-spacing:.2em;color:var(--fx-slate)}
.fx-annot--vertical{writing-mode:vertical-rl;text-orientation:mixed}
.fx-tag{display:inline-flex;align-items:center;gap:.4em;padding:.25rem .6rem;font-size:.72rem;letter-spacing:.14em;border:1px solid currentColor;border-radius:999px;color:var(--fx-teal);font-weight:700}
.fx-rule{height:1px;background:var(--fx-line);border:0;margin-block:clamp(18px,3vw,32px)}
.fx-rule--accent{height:3px;background:linear-gradient(90deg,var(--fx-orange),var(--fx-gold) 40%,transparent)}
.fx-divider--diagonal{height:clamp(36px,6vw,88px);background:linear-gradient(to bottom right,transparent calc(50% - 1px),var(--fx-orange) 50%,transparent calc(50% + 1px));opacity:.85}

/* ---------- 4. 通用组件 ---------- */
/* 4.1 分区与栅格 */
.fx-section{position:relative;padding-block:clamp(44px,6.5vw,96px)}
.fx-section--tight{padding-block:clamp(28px,4vw,56px)}
.fx-section--ink{background:var(--fx-ink);color:var(--fx-white)}
.fx-section--ink h1,.fx-section--ink h2,.fx-section--ink h3{color:var(--fx-white)}
.fx-section--ink .fx-lead{color:var(--fx-white-soft)}
.fx-section--ink .fx-eyebrow{color:var(--fx-cyan)}
.fx-section--ink hr{background:var(--fx-line-invert)}
.fx-section__head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:1rem 2.5rem;margin-bottom:clamp(20px,3vw,40px)}
.fx-grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(16px,2.4vw,32px)}
.fx-col-3{grid-column:span 3}
.fx-col-4{grid-column:span 4}
.fx-col-5{grid-column:span 5}
.fx-col-6{grid-column:span 6}
.fx-col-7{grid-column:span 7}
.fx-col-8{grid-column:span 8}
.fx-col-12{grid-column:span 12}
.fx-stack{display:flex;flex-direction:column;gap:clamp(12px,1.8vw,20px)}
.fx-row{display:flex;flex-wrap:wrap;align-items:center;gap:clamp(10px,1.6vw,20px)}

/* 4.2 按钮 */
.fx-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  padding:.7rem 1.2rem;border:1px solid transparent;border-radius:2px;
  font-size:.88rem;font-weight:700;letter-spacing:.04em;line-height:1.2;
  transition:background .24s var(--fx-ease),color .24s var(--fx-ease),border-color .24s var(--fx-ease),transform .24s var(--fx-ease);
}
.fx-btn:hover{transform:translateY(-2px)}
.fx-btn--primary{background:var(--fx-orange);color:#fff;box-shadow:0 14px 26px -18px rgba(232,74,42,.95)}
.fx-btn--primary:hover{background:var(--fx-orange-lite)}
.fx-btn--ghost{border-color:var(--fx-line-invert);color:var(--fx-white)}
.fx-btn--ghost:hover{border-color:var(--fx-cyan);color:var(--fx-cyan)}
.fx-btn--ink{background:var(--fx-ink);color:var(--fx-white)}
.fx-btn--ink:hover{background:var(--fx-ink-2)}

/* 4.3 面包屑 */
.fx-breadcrumb{font-size:.78rem;letter-spacing:.06em}
.fx-breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:.45rem}
.fx-breadcrumb li{display:flex;align-items:center;gap:.45rem;color:var(--fx-slate)}
.fx-breadcrumb li + li::before{content:"/";color:rgba(143,163,176,.75)}
.fx-breadcrumb a{color:var(--fx-teal)}
.fx-breadcrumb a:hover{color:var(--fx-orange)}
.fx-breadcrumb [aria-current="page"]{color:var(--fx-ink);font-weight:700}
.fx-section--ink .fx-breadcrumb li,.fx-section--ink .fx-breadcrumb [aria-current="page"]{color:var(--fx-slate)}

/* 4.4 正文 */
.fx-prose{max-width:70ch}
.fx-prose > * + *{margin-top:1.05em}
.fx-prose h2{margin-top:1.9em}
.fx-prose h3{margin-top:1.6em}
.fx-prose ul{list-style:disc;padding-left:1.25em}
.fx-prose ol{list-style:decimal;padding-left:1.4em}
.fx-prose li + li{margin-top:.35em}
.fx-prose a{color:var(--fx-teal);text-decoration:underline;text-underline-offset:3px}
.fx-prose a:hover{color:var(--fx-orange)}
.fx-prose blockquote{border-left:3px solid var(--fx-orange);padding-left:1rem;color:var(--fx-ink-soft);font-weight:600}
.fx-prose code{font-family:var(--fx-mono);background:rgba(11,30,45,.06);padding:.1em .4em;border-radius:2px}
.fx-section--ink .fx-prose{color:var(--fx-white-soft)}

/* 4.5 卡片与数据 */
.fx-card{position:relative;background:#fff;border:1px solid var(--fx-line);border-radius:3px;padding:clamp(18px,2.2vw,28px);box-shadow:var(--fx-shadow)}
.fx-card__title{font-size:1.05rem;font-weight:800;letter-spacing:-.01em;color:inherit}
.fx-card__meta{font-size:.74rem;letter-spacing:.14em;color:var(--fx-slate);text-transform:uppercase}
.fx-card--data{background:var(--fx-ink-2);color:var(--fx-white);border-color:transparent}
.fx-card--data .fx-card__meta{color:var(--fx-cyan)}
.fx-card--accent::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--fx-orange)}
.fx-card--rule{background:transparent;border:0;border-top:2px solid var(--fx-ink);border-radius:0;box-shadow:none;padding:1.1rem 0 0}
.fx-section--ink .fx-card{background:var(--fx-ink-2);border-color:var(--fx-line-invert);color:var(--fx-white)}
.fx-section--ink .fx-card--rule{background:transparent;border-top-color:var(--fx-orange)}
.fx-stat{display:flex;flex-direction:column;gap:.15rem}
.fx-stat__value{font-family:var(--fx-mono);font-variant-numeric:tabular-nums;font-size:clamp(1.7rem,3.4vw,2.6rem);font-weight:800;line-height:1;letter-spacing:-.03em}
.fx-stat__label{font-size:.74rem;letter-spacing:.16em;color:var(--fx-slate)}
.fx-stat__value--cyan{color:var(--fx-teal)}
.fx-stat__value--orange{color:var(--fx-orange)}
.fx-stat__value--gold{color:#B98A00}
.fx-section--ink .fx-stat__value{color:var(--fx-white)}
.fx-section--ink .fx-stat__value--cyan{color:var(--fx-cyan)}
.fx-section--ink .fx-stat__value--gold{color:var(--fx-gold)}
.fx-section--ink .fx-stat__value--orange{color:var(--fx-orange-lite)}

/* 4.6 影像容器（页面阶段放置 <img> 占位） */
.fx-figure{position:relative;margin:0;overflow:hidden;border-radius:3px;aspect-ratio:16/9;background:linear-gradient(140deg,var(--fx-ink-2),var(--fx-ink) 58%,var(--fx-teal))}
.fx-figure__img{width:100%;height:100%;object-fit:cover}
.fx-figure__caption{position:absolute;left:0;right:0;bottom:0;padding:.85rem 1rem;font-size:.74rem;letter-spacing:.1em;color:var(--fx-white-soft);background:linear-gradient(180deg,transparent,rgba(11,30,45,.85))}
.fx-figure--square{aspect-ratio:1/1}
.fx-figure--portrait{aspect-ratio:3/4}
.fx-figure--tall{aspect-ratio:4/5}
.fx-figure--wide{aspect-ratio:21/9}
.fx-figure--empty::after{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(135deg,rgba(247,249,251,.07) 0 2px,transparent 2px 11px)}

/* 4.7 可展开内容组 */
.fx-disclosure{border-top:1px solid var(--fx-line)}
.fx-disclosure:last-child{border-bottom:1px solid var(--fx-line)}
.fx-disclosure__btn{display:flex;width:100%;align-items:flex-start;justify-content:space-between;gap:1.2rem;padding:1.05rem 0;text-align:left;font-weight:700;font-size:1rem;letter-spacing:-.01em;transition:color .2s var(--fx-ease)}
.fx-disclosure__btn:hover{color:var(--fx-orange)}
.fx-disclosure__icon{position:relative;flex:0 0 14px;width:14px;height:14px;margin-top:.4rem}
.fx-disclosure__icon::before,.fx-disclosure__icon::after{content:"";position:absolute;background:var(--fx-orange);transition:transform .28s var(--fx-ease),opacity .28s var(--fx-ease)}
.fx-disclosure__icon::before{left:0;right:0;top:6px;height:2px}
.fx-disclosure__icon::after{top:0;bottom:0;left:6px;width:2px}
.fx-disclosure__btn[aria-expanded="true"] .fx-disclosure__icon::after{transform:scaleY(0);opacity:0}
.fx-disclosure__panel{padding-bottom:1.15rem;animation:fx-fade .28s var(--fx-ease) both}
.fx-disclosure__panel[hidden]{display:none}
.fx-section--ink .fx-disclosure{border-color:var(--fx-line-invert)}
@keyframes fx-fade{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

/* 4.8 滚动显现协议 */
[data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .65s var(--fx-ease),transform .65s var(--fx-ease)}
[data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 5. 头部 ---------- */
.fx-skip{position:fixed;left:12px;top:-80px;z-index:200;background:var(--fx-gold);color:var(--fx-ink);padding:.6rem 1rem;font-weight:700;font-size:.85rem;border-radius:2px;transition:top .2s var(--fx-ease)}
.fx-skip:focus,.fx-skip:focus-visible{top:12px}

.fx-header{position:sticky;top:0;z-index:80;background:var(--fx-ink);color:var(--fx-white);box-shadow:0 12px 34px -26px rgba(11,30,45,.95)}

.fx-strip{background:var(--fx-ink-2);border-bottom:1px solid var(--fx-line-invert);font-size:.75rem}
.fx-strip__inner{display:flex;align-items:center;justify-content:space-between;gap:1.5rem;min-height:38px;padding-block:.35rem}
.fx-strip__lead{color:var(--fx-slate);letter-spacing:.16em;white-space:nowrap}
.fx-strip__list{display:flex;align-items:baseline;gap:clamp(14px,2.6vw,36px)}
.fx-strip__item{display:flex;align-items:baseline;gap:.45rem}
.fx-strip__label{color:var(--fx-slate);letter-spacing:.1em}
.fx-strip__value{color:var(--fx-gold);font-size:.95rem}
.fx-strip__value--alt{color:var(--fx-cyan)}

.fx-header__bar{position:relative;background:linear-gradient(180deg,#0B1E2D 0%,#0D2333 100%);border-bottom:1px solid var(--fx-line-invert)}
.fx-header__inner{display:flex;align-items:center;justify-content:space-between;gap:1.5rem;min-height:72px;padding-block:.7rem}

.fx-brand{display:inline-flex;align-items:center;gap:.75rem}
.fx-brand__mark{flex:0 0 36px;width:36px;height:36px;background:linear-gradient(140deg,var(--fx-orange),var(--fx-orange-lite));clip-path:polygon(0 100%,0 30%,30% 30%,30% 0,100% 0,100% 70%,70% 70%,70% 100%)}
.fx-brand__text{display:flex;flex-direction:column;line-height:1.2}
.fx-brand__name{font-size:1.06rem;font-weight:800;letter-spacing:-.01em}
.fx-brand__meta{font-family:var(--fx-mono);font-size:.66rem;color:var(--fx-slate);letter-spacing:.08em}

.fx-nav{display:flex;align-items:center;gap:clamp(12px,2vw,26px)}
.fx-nav__list{display:flex;align-items:center;gap:clamp(10px,1.7vw,24px)}
.fx-nav__link{position:relative;display:inline-block;padding:.45rem .1rem;font-size:.92rem;font-weight:600;letter-spacing:.02em;color:rgba(247,249,251,.82);transition:color .2s var(--fx-ease)}
.fx-nav__link::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--fx-orange);transform:scaleX(0);transform-origin:left;transition:transform .28s var(--fx-ease)}
.fx-nav__link:hover{color:#fff}
.fx-nav__link:hover::after{transform:scaleX(1)}
.fx-nav__link[aria-current="page"]{color:#fff}
.fx-nav__link[aria-current="page"]::after{transform:scaleX(1);background:var(--fx-gold)}
.fx-nav__cta{margin-left:.4rem}

.fx-navtoggle{display:none;align-items:center;gap:.55rem;padding:.5rem .7rem;border:1px solid var(--fx-line-invert);border-radius:2px;color:var(--fx-white);font-size:.8rem;font-weight:700;letter-spacing:.1em}
.fx-navtoggle__bars{display:flex;flex-direction:column;gap:3px;width:16px}
.fx-navtoggle__bar{display:block;height:2px;background:currentColor;transition:transform .28s var(--fx-ease),opacity .28s var(--fx-ease)}
.fx-navtoggle[aria-expanded="true"]{border-color:var(--fx-orange);color:var(--fx-orange-lite)}
.fx-navtoggle[aria-expanded="true"] .fx-navtoggle__bar:nth-child(1){transform:translateY(5px) rotate(45deg)}
.fx-navtoggle[aria-expanded="true"] .fx-navtoggle__bar:nth-child(2){opacity:0}
.fx-navtoggle[aria-expanded="true"] .fx-navtoggle__bar:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
.fx-navtoggle__label{white-space:nowrap}

.fx-progress{position:absolute;left:0;right:0;bottom:0;height:2px;background:rgba(143,163,176,.18);z-index:2}
.fx-progress__bar{display:block;height:100%;width:100%;transform:scaleX(0);transform-origin:left;background:linear-gradient(90deg,var(--fx-orange),var(--fx-gold))}

/* ---------- 6. 页脚 ---------- */
.fx-footer{position:relative;background:var(--fx-ink);color:var(--fx-white-soft);border-top:3px solid var(--fx-orange);overflow:hidden}
.fx-footer .fx-container{padding-block:clamp(40px,6vw,84px) clamp(20px,3vw,34px)}
.fx-footer__grid{display:grid;grid-template-columns:1.5fr 1fr 1.2fr;gap:clamp(24px,4vw,56px)}
.fx-footer__name{margin-top:.9rem;font-size:1.12rem;font-weight:800;color:var(--fx-white);letter-spacing:-.01em}
.fx-footer__desc{margin-top:.35rem;font-size:.9rem;max-width:34ch;color:rgba(247,249,251,.7)}
.fx-footer__note{margin-top:1rem;padding-left:.75rem;border-left:2px solid var(--fx-teal);font-size:.78rem;color:var(--fx-slate)}
.fx-footer__heading{margin-bottom:1rem;font-size:.72rem;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:var(--fx-cyan)}
.fx-footer__links{display:grid;grid-template-columns:1fr 1fr;gap:.55rem 1.25rem}
.fx-footer__links a{font-size:.88rem;color:rgba(247,249,251,.8);border-bottom:1px solid transparent;transition:color .2s var(--fx-ease),border-color .2s var(--fx-ease)}
.fx-footer__links a:hover{color:var(--fx-orange-lite);border-bottom-color:currentColor}
.fx-footer__contact p{margin-bottom:.55rem;font-size:.85rem;line-height:1.6}
.fx-footer__label{display:block;font-size:.7rem;letter-spacing:.16em;color:var(--fx-slate)}
.fx-footer__hours{margin-top:.85rem;padding-top:.85rem;border-top:1px dashed var(--fx-line-invert);font-size:.78rem;color:var(--fx-slate)}
.fx-footer__meta{display:flex;flex-wrap:wrap;align-items:center;gap:.6rem 1.5rem;margin-top:clamp(28px,4vw,52px);padding-top:1.25rem;border-top:1px solid var(--fx-line-invert);font-size:.76rem;color:var(--fx-slate)}
.fx-footer__icp{font-family:var(--fx-mono);letter-spacing:.02em}
.fx-totop{margin-left:auto;padding:.45rem .85rem;border:1px solid var(--fx-line-invert);border-radius:2px;font-size:.76rem;font-weight:700;letter-spacing:.12em;color:var(--fx-white-soft);transition:color .2s var(--fx-ease),border-color .2s var(--fx-ease)}
.fx-totop:hover{color:var(--fx-cyan);border-color:var(--fx-cyan)}
.fx-footer__wordmark{margin-top:clamp(18px,3vw,34px);font-size:clamp(2.2rem,8.5vw,6.4rem);font-weight:900;line-height:1;letter-spacing:.02em;color:rgba(143,163,176,.11);white-space:nowrap;pointer-events:none;user-select:none}

/* ---------- 7. 响应式 ---------- */
@media (max-width:1080px){
  .fx-footer__grid{grid-template-columns:1.3fr 1fr;gap:clamp(22px,3.5vw,40px)}
  .fx-footer__contact{grid-column:span 2}
}
@media (max-width:1000px){
  .fx-col-3,.fx-col-4,.fx-col-5,.fx-col-6,.fx-col-7,.fx-col-8{grid-column:span 12}
}
@media (max-width:960px){
  .fx-strip{display:none}
  .fx-navtoggle{display:inline-flex;position:relative;z-index:95}
  .fx-header__bar{border-bottom:1px solid var(--fx-line-invert)}

  .fx-nav{
    position:fixed;top:0;right:0;bottom:0;z-index:90;
    width:min(86vw,360px);
    display:flex;flex-direction:column;align-items:stretch;gap:0;
    padding:5.4rem 1.5rem 2rem;
    background:var(--fx-ink-2);border-left:1px solid var(--fx-line-invert);
    transform:translateX(102%);overflow-y:auto;
    transition:transform .34s var(--fx-ease);
  }
  .fx-header[data-open="true"] .fx-nav{transform:none}
  .fx-header::after{content:"";position:fixed;inset:0;z-index:85;background:rgba(11,30,45,.62);opacity:0;pointer-events:none;transition:opacity .3s var(--fx-ease)}
  .fx-header[data-open="true"]::after{opacity:1;pointer-events:auto}

  .fx-nav__list{flex-direction:column;align-items:stretch;gap:0;width:100%}
  .fx-nav__list li{border-bottom:1px solid var(--fx-line-invert)}
  .fx-nav__link{display:block;padding:.95rem 0;font-size:1.05rem}
  .fx-nav__link::after{display:none}
  .fx-nav__link[aria-current="page"]{color:var(--fx-gold);padding-left:.7rem;border-left:2px solid var(--fx-gold)}
  .fx-nav__cta{margin:1.6rem 0 0;width:100%}

  html.fx-nav-open,html.fx-nav-open body{overflow:hidden}
}
@media (max-width:640px){
  .fx-footer__grid{grid-template-columns:1fr}
  .fx-footer__contact{grid-column:auto}
  .fx-footer__links{grid-template-columns:1fr 1fr}
  .fx-totop{margin-left:0}
  .fx-brand__meta{font-size:.62rem}
  .fx-header__inner{min-height:64px}
  .fx-footer__wordmark{white-space:normal;line-height:1.05}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  [data-reveal]{opacity:1;transform:none;transition:none}
  .fx-btn:hover{transform:none}
}