*,*::before,*::after{margin:0;padding:0;box-sizing:border-box;}

:root{
  --c-bg:#0D1B2A;
  --c-bg-2:#1B263B;
  --c-gold:#D4AF37;
  --c-red:#E63946;
  --c-light:#F8F9FA;
  --c-blue-gray:#415A77;
  --c-warm:#FFBF69;
  --c-ink:#111827;
  --c-text-soft:#C7D3E4;
  --c-text-mute:#8CA0B8;
  --font-heading:"PingFang SC","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  --font-body:"PingFang SC","Microsoft YaHei",sans-serif;
  --content-max:80rem;
  --header-h:4.75rem;
  --radius:.75rem;
  --shadow:0 12px 28px rgba(0,0,0,.28);
}

html{
  scroll-behavior:smooth;
  scroll-padding-top:5.5rem;
  -webkit-text-size-adjust:100%;
}

body{
  min-height:100vh;
  display:flex;
  flex-direction:column;
  background:var(--c-bg);
  color:var(--c-text-soft);
  font-family:var(--font-body);
  font-size:15px;
  line-height:1.7;
  overflow-x:hidden;
}

body > main{flex:1;}

img,svg{display:block;max-width:100%;}

button{
  font-family:inherit;
  cursor:pointer;
}

ul,ol{list-style:none;}

a{
  color:var(--c-gold);
  text-decoration:none;
}

a:hover{color:var(--c-warm);}

h1,h2,h3,h4,h5,h6{
  font-family:var(--font-heading);
  color:var(--c-light);
  line-height:1.15;
  font-weight:800;
}

h1{font-size:clamp(2.25rem,5.5vw,3.75rem);}
h2{font-size:clamp(1.75rem,4vw,2.75rem);}
h3{font-size:clamp(1.25rem,2.4vw,1.75rem);}

p{line-height:1.7;}

::selection{
  background:var(--c-gold);
  color:var(--c-bg);
}

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

.skip-link{
  position:fixed;
  top:-5rem;
  left:1rem;
  z-index:1500;
  background:var(--c-gold);
  color:var(--c-bg);
  padding:.7rem 1.1rem;
  border-radius:.375rem;
  font-weight:800;
  box-shadow:var(--shadow);
  transition:top .2s ease;
}

.skip-link:focus{
  top:1rem;
}

.container{
  width:min(100% - 2rem,var(--content-max));
  margin-inline:auto;
}

.page-section{
  padding-block:clamp(3rem,8vw,6.5rem);
}

.page-section--tight{
  padding-block:clamp(2rem,4vw,3.5rem);
}

#main-content{
  scroll-margin-top:5.5rem;
  flex:1;
  width:100%;
}

/* 头部 */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:linear-gradient(180deg,rgba(13,27,42,.98),rgba(13,27,42,.96));
  border-bottom:1px solid rgba(212,175,55,.18);
}

.site-header::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:3px;
  background:linear-gradient(90deg,var(--c-red) 0%,var(--c-gold) 40%,var(--c-blue-gray) 100%);
  pointer-events:none;
  z-index:1;
}

.site-header::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:80;
  background:rgba(4,10,18,.72);
  backdrop-filter:blur(2px);
  opacity:0;
  pointer-events:none;
  transition:opacity .25s ease;
}

.site-header[data-nav-open]::after{
  opacity:1;
  pointer-events:auto;
}

.site-header__progress{
  position:absolute;
  top:0;
  left:0;
  width:100%;
  height:3px;
  background:linear-gradient(90deg,var(--c-red),var(--c-gold));
  transform:scaleX(0);
  transform-origin:left;
  z-index:2;
  pointer-events:none;
}

.site-header__inner{
  position:relative;
  max-width:var(--content-max);
  margin:0 auto;
  min-height:var(--header-h);
  padding:0 clamp(1rem,4vw,2.5rem);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1.25rem;
}

.site-brand{
  display:inline-flex;
  align-items:center;
  gap:.75rem;
  color:var(--c-light);
  text-decoration:none;
}

.site-brand:hover{
  color:var(--c-light);
}

.site-brand__mark{
  position:relative;
  display:grid;
  place-items:center;
  width:2.75rem;
  height:2.75rem;
  border:1px solid rgba(212,175,55,.7);
  border-radius:.5rem;
  background:linear-gradient(135deg,rgba(212,175,55,.25),rgba(212,175,55,.02));
  color:var(--c-gold);
  font-weight:900;
  font-size:1.15rem;
  letter-spacing:.02em;
  transition:transform .2s ease,box-shadow .2s ease;
}

.site-brand:hover .site-brand__mark{
  transform:translateY(-2px);
  box-shadow:0 6px 18px rgba(212,175,55,.22);
}

.site-brand__mark::after{
  content:"";
  position:absolute;
  top:-.3rem;
  right:-.3rem;
  width:.55rem;
  height:.55rem;
  background:var(--c-red);
  border-radius:50%;
  box-shadow:0 0 0 3px rgba(13,27,42,.9);
}

.site-brand__name{
  display:flex;
  flex-direction:column;
  font-family:var(--font-heading);
  font-size:1.25rem;
  line-height:1.1;
  font-weight:800;
  letter-spacing:.02em;
}

.site-brand__domain{
  margin-top:.2rem;
  font-family:var(--font-body);
  font-size:.66rem;
  font-weight:500;
  letter-spacing:.08em;
  color:var(--c-text-mute);
}

.site-nav{
  display:flex;
  align-items:center;
  gap:1rem;
}

.site-nav__label{
  display:none;
}

.site-nav__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.25rem;
}

.site-nav__link{
  position:relative;
  display:block;
  padding:.55rem .8rem;
  font-size:.9rem;
  font-weight:600;
  color:var(--c-text-soft);
  letter-spacing:.02em;
  border-radius:.375rem;
  transition:color .2s ease,background .2s ease;
}

.site-nav__link::after{
  content:"";
  position:absolute;
  left:.8rem;
  right:calc(100% - .8rem);
  bottom:.15rem;
  height:2px;
  background:linear-gradient(90deg,var(--c-red),var(--c-gold));
  transition:right .28s ease;
}

.site-nav__link:hover{
  color:var(--c-light);
  background:rgba(65,90,119,.18);
}

.site-nav__link:hover::after{
  right:.8rem;
}

.site-nav__link[aria-current="page"]{
  color:var(--c-gold);
}

.site-nav__link[aria-current="page"]::after{
  right:.8rem;
  background:var(--c-gold);
}

.site-header__cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:.6rem 1.15rem;
  border-radius:999px;
  background:linear-gradient(135deg,var(--c-gold),var(--c-warm));
  color:var(--c-bg);
  font-weight:800;
  font-size:.86rem;
  letter-spacing:.02em;
  box-shadow:0 4px 14px rgba(212,175,55,.22);
  transition:transform .18s ease,filter .18s ease,box-shadow .18s ease;
}

.site-header__cta:hover{
  color:var(--c-bg);
  filter:brightness(1.08);
  transform:translateY(-2px);
  box-shadow:0 8px 22px rgba(212,175,55,.34);
}

.site-header__toggle{
  display:none;
  position:relative;
  z-index:110;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  width:2.75rem;
  height:2.75rem;
  padding:.625rem;
  background:transparent;
  border:1px solid var(--c-blue-gray);
  border-radius:.45rem;
  color:var(--c-gold);
  transition:border-color .2s ease,background .2s ease;
}

.site-header__toggle:hover{
  border-color:var(--c-gold);
  background:rgba(212,175,55,.08);
}

.site-header__toggle .toggle-bar{
  display:block;
  width:100%;
  height:2px;
  background:var(--c-gold);
  border-radius:2px;
  transition:transform .28s ease,opacity .28s ease;
}

.site-header__toggle[aria-expanded="true"] .toggle-bar:nth-child(1){
  transform:translateY(7px) rotate(45deg);
}

.site-header__toggle[aria-expanded="true"] .toggle-bar:nth-child(2){
  opacity:0;
}

.site-header__toggle[aria-expanded="true"] .toggle-bar:nth-child(3){
  transform:translateY(-7px) rotate(-45deg);
}

.site-header__toggle-label{
  position:absolute;
  width:1px;
  height:1px;
  overflow:hidden;
  clip:rect(0 0 0 0);
  white-space:nowrap;
}

@media (max-width:1023px){
  .site-header__inner{
    min-height:4rem;
  }

  .site-header__toggle{
    display:inline-flex;
  }

  .site-nav{
    position:fixed;
    top:0;
    right:0;
    z-index:110;
    display:flex;
    flex-direction:column;
    align-items:stretch;
    gap:1.25rem;
    width:min(22rem,84vw);
    height:100dvh;
    padding:5.5rem 1.5rem 1.5rem;
    background:linear-gradient(180deg,var(--c-bg) 0%,#0A1624 100%);
    border-left:1px solid rgba(212,175,55,.3);
    box-shadow:-1rem 0 3rem rgba(0,0,0,.45);
    transform:translateX(100%);
    visibility:hidden;
    transition:transform .32s ease,visibility .32s ease;
  }

  .site-nav[data-open]{
    transform:translateX(0);
    visibility:visible;
  }

  .site-nav__label{
    display:block;
    font-size:.72rem;
    letter-spacing:.2em;
    color:var(--c-gold);
    text-transform:uppercase;
    border-left:3px solid var(--c-red);
    padding-left:.75rem;
  }

  .site-nav__list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
  }

  .site-nav__link{
    padding:1rem .25rem;
    font-size:1.05rem;
    border-bottom:1px solid rgba(65,90,119,.3);
    border-radius:0;
  }

  .site-nav__link::after{
    display:none;
  }

  .site-nav .site-header__cta{
    width:100%;
    margin-top:.25rem;
  }
}

@media (min-width:1024px){
  .site-header::after{
    display:none;
  }

  .site-nav{
    position:static;
    width:auto;
    height:auto;
    padding:0;
    background:transparent;
    border:0;
    box-shadow:none;
    transform:none;
    visibility:visible;
  }
}

/* 页脚 */
.site-footer{
  position:relative;
  background:linear-gradient(180deg,#0A1624 0%,var(--c-bg) 45%,#0D1B2A 100%);
  border-top:1px solid rgba(212,175,55,.22);
}

.site-footer::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:3px;
  background:linear-gradient(90deg,var(--c-red),var(--c-gold) 45%,var(--c-blue-gray));
  opacity:.8;
  pointer-events:none;
}

.site-footer__main{
  max-width:var(--content-max);
  margin:0 auto;
  padding:3.5rem clamp(1rem,4vw,2.5rem) 2.5rem;
  display:grid;
  grid-template-columns:minmax(0,2.2fr) minmax(0,1fr) minmax(0,1fr) minmax(0,1.4fr);
  gap:2.5rem 2rem;
}

.site-footer__intro{
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  gap:1rem;
}

.site-footer__brand{
  display:inline-flex;
  align-items:center;
  gap:.6rem;
  color:var(--c-light);
  font-weight:800;
  font-size:1.3rem;
  text-decoration:none;
}

.site-footer__brand:hover{
  color:var(--c-light);
}

.site-footer__mark{
  display:grid;
  place-items:center;
  width:2.25rem;
  height:2.25rem;
  border:1px solid var(--c-gold);
  border-radius:.375rem;
  background:linear-gradient(135deg,rgba(212,175,55,.24),rgba(212,175,55,.03));
  color:var(--c-gold);
  font-size:1rem;
  font-weight:900;
}

.site-footer__trust{
  max-width:22rem;
  font-size:.9rem;
  line-height:1.6;
  color:var(--c-text-mute);
}

.site-footer__coord{
  font-size:.75rem;
  letter-spacing:.12em;
  color:var(--c-gold);
  opacity:.75;
}

.site-footer__nav,
.site-footer__rules,
.site-footer__contact{
  display:flex;
  flex-direction:column;
}

.site-footer__heading{
  position:relative;
  margin:0 0 1rem;
  padding-left:.75rem;
  font-size:.8rem;
  font-weight:800;
  letter-spacing:.18em;
  color:var(--c-gold);
  text-transform:uppercase;
}

.site-footer__heading::before{
  content:"";
  position:absolute;
  left:0;
  top:.2em;
  bottom:.2em;
  width:3px;
  background:var(--c-red);
  border-radius:2px;
}

.site-footer__list{
  display:grid;
  gap:.5rem;
}

.site-footer__list a{
  display:inline-block;
  padding:.15rem 0;
  font-size:.9rem;
  color:var(--c-text-soft);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .2s ease,border-color .2s ease;
}

.site-footer__list a:hover{
  color:var(--c-gold);
  border-bottom-color:var(--c-gold);
}

.site-footer__contact{
  gap:.55rem;
  font-size:.9rem;
  color:var(--c-text-soft);
}

.site-footer__contact p{
  margin:0;
}

.site-footer__note{
  margin-top:.4rem;
  padding-top:.7rem;
  border-top:1px solid rgba(65,90,119,.35);
  font-size:.82rem;
  color:var(--c-text-mute);
  line-height:1.6;
}

.site-footer__bottom{
  max-width:var(--content-max);
  margin:0 auto;
  padding:1.25rem clamp(1rem,4vw,2.5rem);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:.75rem 1.5rem;
  border-top:1px solid rgba(65,90,119,.4);
  font-size:.8rem;
  color:var(--c-text-mute);
}

.site-footer__top{
  display:inline-flex;
  align-items:center;
  gap:.5rem;
  padding:.45rem .9rem;
  border:1px solid var(--c-blue-gray);
  border-radius:999px;
  background:transparent;
  color:var(--c-gold);
  font-size:.78rem;
  transition:border-color .2s ease,color .2s ease,transform .2s ease,background .2s ease;
}

.site-footer__top::before{
  content:"↑";
  font-weight:900;
}

.site-footer__top:hover{
  border-color:var(--c-gold);
  background:rgba(212,175,55,.08);
  color:var(--c-gold);
  transform:translateY(-2px);
}

@media (max-width:1023px){
  .site-footer__main{
    grid-template-columns:1fr 1fr;
  }
}

@media (max-width:639px){
  .site-footer__main{
    grid-template-columns:1fr;
    padding-top:2.5rem;
  }

  .site-footer__bottom{
    justify-content:center;
    text-align:center;
  }
}

@media (max-width:480px){
  .site-brand__domain{
    display:none;
  }
}

/* 通用组件 */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.5rem;
  margin:0 0 2rem;
  padding:0;
  list-style:none;
  font-size:.85rem;
  color:var(--c-text-mute);
}

.breadcrumb li{
  display:inline-flex;
  align-items:center;
  gap:.5rem;
}

.breadcrumb li + li::before{
  content:"/";
  color:var(--c-blue-gray);
}

.breadcrumb a{
  color:var(--c-text-soft);
  text-decoration:none;
  transition:color .2s ease;
}

.breadcrumb a:hover{
  color:var(--c-gold);
}

.breadcrumb [aria-current="page"]{
  color:var(--c-gold);
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5rem;
  padding:.6rem 1.1rem;
  border:0;
  border-radius:999px;
  background:linear-gradient(135deg,var(--c-gold),var(--c-warm));
  color:var(--c-bg);
  font-weight:800;
  font-size:.82rem;
  text-decoration:none;
  box-shadow:0 4px 14px rgba(212,175,55,.2);
  transition:filter .18s ease,transform .18s ease,box-shadow .18s ease;
}

.btn:hover{
  color:var(--c-bg);
  filter:brightness(1.08);
  transform:translateY(-2px);
  box-shadow:0 8px 20px rgba(212,175,55,.32);
}

.btn--ghost{
  background:transparent;
  color:var(--c-gold);
  border:1px solid var(--c-gold);
  box-shadow:none;
}

.btn--ghost:hover{
  background:rgba(212,175,55,.1);
  color:var(--c-gold);
}

.btn--red{
  background:linear-gradient(135deg,var(--c-red),#FF6B54);
  color:var(--c-light);
}

.btn--red:hover{
  color:var(--c-light);
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:.5rem;
  font-size:.75rem;
  font-weight:700;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--c-gold);
}

.eyebrow::before{
  content:"";
  width:1.5rem;
  height:1px;
  background:var(--c-red);
}

.display-title{
  font-family:var(--font-heading);
  font-weight:300;
  font-size:clamp(2.8rem,9vw,6.5rem);
  line-height:.95;
  letter-spacing:-.02em;
  color:var(--c-light);
}

.data-number{
  font-family:var(--font-heading);
  font-weight:900;
  color:var(--c-gold);
  font-variant-numeric:tabular-nums;
}

.index-label{
  display:inline-block;
  font-family:var(--font-heading);
  font-size:.72rem;
  font-weight:700;
  letter-spacing:.2em;
  color:var(--c-text-mute);
  text-transform:uppercase;
}

.grid{
  display:grid;
  gap:1.5rem;
}

.grid--2{
  grid-template-columns:repeat(2,minmax(0,1fr));
}

.grid--3{
  grid-template-columns:repeat(3,minmax(0,1fr));
}

.grid--4{
  grid-template-columns:repeat(4,minmax(0,1fr));
}

@media (max-width:1023px){
  .grid--3,
  .grid--4{
    grid-template-columns:repeat(2,minmax(0,1fr));
  }
}

@media (max-width:767px){
  .grid--2,
  .grid--3,
  .grid--4{
    grid-template-columns:1fr;
  }
}

.card{
  position:relative;
  display:flex;
  flex-direction:column;
  gap:1rem;
  padding:1.5rem;
  background:linear-gradient(145deg,rgba(27,38,59,.95),rgba(13,27,42,.9));
  border:1px solid rgba(65,90,119,.55);
  border-radius:.875rem;
  transition:border-color .22s ease,transform .22s ease,box-shadow .22s ease;
}

.card:hover{
  border-color:rgba(212,175,55,.6);
  transform:translateY(-4px);
  box-shadow:0 14px 30px rgba(0,0,0,.3);
}

.card--red-top::before{
  content:"";
  display:block;
  width:2.25rem;
  height:3px;
  background:linear-gradient(90deg,var(--c-red),var(--c-gold));
  border-radius:2px;
}

.legend{
  display:flex;
  flex-wrap:wrap;
  gap:.75rem 1.25rem;
  padding:0;
  margin:0;
  list-style:none;
}

.legend__item{
  display:inline-flex;
  align-items:center;
  gap:.5rem;
  font-size:.82rem;
  color:var(--c-text-soft);
}

.legend__key{
  width:.8rem;
  height:.8rem;
  border-radius:2px;
  background:var(--c-gold);
  box-shadow:0 0 0 1px rgba(212,175,55,.2);
}

.legend__key--red{
  background:var(--c-red);
  box-shadow:0 0 0 1px rgba(230,57,70,.25);
}

.legend__key--blue{
  background:var(--c-blue-gray);
}

.media-frame{
  position:relative;
  overflow:hidden;
  aspect-ratio:16/9;
  display:grid;
  place-items:center;
  background:linear-gradient(135deg,rgba(27,38,59,.8),rgba(13,27,42,.6));
  border:1px solid var(--c-blue-gray);
  border-radius:.875rem;
}

.media-frame--portrait{
  aspect-ratio:3/4;
}

.media-frame--wide{
  aspect-ratio:21/9;
}

.media-frame img{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
}

.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(135deg,transparent 55%,rgba(212,175,55,.12));
  pointer-events:none;
}

.media-frame__caption{
  position:absolute;
  left:1rem;
  bottom:.75rem;
  z-index:2;
  font-size:.78rem;
  color:var(--c-light);
  background:rgba(13,27,42,.7);
  padding:.3rem .6rem;
  border-radius:999px;
  border:1px solid rgba(212,175,55,.3);
}

.media-frame__placeholder{
  color:var(--c-text-mute);
  font-size:.8rem;
  letter-spacing:.1em;
}

.table-wrap{
  overflow-x:auto;
  border:1px solid var(--c-blue-gray);
  border-radius:.75rem;
  background:rgba(27,38,59,.6);
}

table{
  width:100%;
  border-collapse:collapse;
  font-size:.9rem;
  color:var(--c-text-soft);
}

th,td{
  padding:.75rem 1rem;
  text-align:left;
  border-bottom:1px solid rgba(65,90,119,.35);
  white-space:nowrap;
}

th{
  color:var(--c-gold);
  font-weight:800;
  background:rgba(65,90,119,.16);
}

/* 显现协议 */
.js [data-reveal]{
  opacity:0;
  transform:translateY(18px);
  transition:opacity .6s ease,transform .6s ease;
}

.js [data-reveal].is-visible{
  opacity:1;
  transform:none;
}

@media (prefers-reduced-motion:reduce){
  html{
    scroll-behavior:auto;
  }

  *,
  *::before,
  *::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
    transition-delay:0ms !important;
  }

  .js [data-reveal]{
    opacity:1;
    transform:none;
    transition:none;
  }
}