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

:root{
  --red:#E63946;
  --red-deep:#B5222F;
  --gold:#F4A261;
  --gold-soft:#FFD8A8;
  --ink:#1D3557;
  --midnight:#14213D;
  --teal:#2A9D8F;
  --cream:#FFF8F0;
  --mist:#F1F5F9;
  --graphite:#334155;
  --line:#CBD5E1;

  --font-display:"Noto Sans SC","Source Han Sans SC","PingFang SC",system-ui,sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"Roboto Mono","IBM Plex Mono",SFMono-Regular,Consolas,"Liberation Mono",monospace;

  --shell:1200px;
  --gutter:clamp(1rem,4vw,2.5rem);
  --radius:14px;
  --shadow-sm:0 2px 8px rgba(29,53,87,.08);
  --shadow-md:0 16px 40px rgba(29,53,87,.14);
  --ease:cubic-bezier(.22,.61,.36,1);
  --head-h:7rem;
}

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:var(--head-h);
}

body{
  margin:0;
  font-family:var(--font-body);
  font-size:clamp(15.5px,.55vw + 14px,17px);
  line-height:1.75;
  color:var(--ink);
  background-color:var(--cream);
  background-image:radial-gradient(1100px 520px at 92% -8%,rgba(244,162,97,.16),transparent 62%);
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
}

h1,h2,h3,h4{
  margin:0;
  font-family:var(--font-display);
  font-weight:900;
  line-height:1.16;
  letter-spacing:-.012em;
  color:var(--ink);
}

h1{font-size:clamp(32px,4.2vw,56px);line-height:1.06}
h2{font-size:clamp(24px,2.8vw,36px)}
h3{font-size:clamp(19px,1.6vw,24px);line-height:1.3}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
img,svg,video{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,textarea,select{font:inherit;color:inherit}
strong{font-weight:800}

[hidden]{display:none !important}

::selection{background:var(--red);color:#fff}

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

.sr-only{
  position:absolute;
  width:1px;height:1px;
  padding:0;margin:-1px;
  overflow:hidden;
  clip:rect(0 0 0 0);
  clip-path:inset(50%);
  white-space:nowrap;
  border:0;
}

/* ---------- 布局基元 ---------- */
.shell{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gutter);
}

.section{padding-block:clamp(2rem,5vw,3.75rem)}
.section--tint{
  background:var(--mist);
  border-block:1px solid var(--line);
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:.55rem;
  margin-bottom:.75rem;
  font-family:var(--font-mono);
  font-size:.72rem;
  font-weight:600;
  letter-spacing:.16em;
  color:var(--red-deep);
}
.eyebrow::before{
  content:"";
  width:20px;height:3px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--red),var(--gold));
}

.grid{display:grid;gap:clamp(1rem,2.4vw,1.75rem)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.4rem;
  padding:.58rem 1.05rem;
  border:1px solid transparent;
  border-radius:8px;
  font-family:var(--font-body);
  font-size:.9rem;
  font-weight:800;
  line-height:1.2;
  letter-spacing:.01em;
  white-space:nowrap;
  transition:transform .16s var(--ease),background-color .16s var(--ease),
             color .16s var(--ease),border-color .16s var(--ease),box-shadow .16s var(--ease);
}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}

.btn--solid{
  background:var(--red);
  color:#fff;
  box-shadow:0 8px 20px rgba(230,57,70,.3);
}
.btn--solid:hover{background:var(--red-deep);box-shadow:0 10px 26px rgba(181,34,47,.34)}

.btn--gold{
  background:var(--gold);
  color:var(--midnight);
  box-shadow:0 8px 20px rgba(244,162,97,.34);
}
.btn--gold:hover{background:#ef9147;box-shadow:0 10px 26px rgba(244,162,97,.42)}

.btn--ghost{
  background:rgba(255,248,240,.08);
  color:var(--cream);
  border-color:rgba(255,216,168,.4);
}
.btn--ghost:hover{
  background:rgba(255,216,168,.18);
  border-color:var(--gold);
  color:#fff;
}

/* ---------- Skip link ---------- */
.skip-link{
  position:absolute;
  left:1rem;
  top:-4.5rem;
  z-index:300;
  padding:.7rem 1.15rem;
  border-radius:8px;
  background:var(--gold);
  color:var(--midnight);
  font-weight:800;
  font-size:.9rem;
  transition:top .2s var(--ease);
}
.skip-link:focus{top:.65rem}

/* ---------- 头部 · 索引轨 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  font-family:var(--font-body);
}

.rail{
  background:var(--midnight);
  border-bottom:1px solid rgba(255,216,168,.16);
}
.rail__inner{
  display:flex;
  align-items:center;
  gap:1rem;
  max-width:var(--shell);
  margin-inline:auto;
  padding:.42rem var(--gutter);
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.08em;
  color:rgba(255,248,240,.7);
}
.rail__badge{
  display:inline-flex;
  align-items:center;
  gap:.42rem;
  flex:0 0 auto;
  color:var(--gold);
  font-weight:700;
}
.rail__dot{
  width:7px;height:7px;
  border-radius:50%;
  background:var(--teal);
  box-shadow:0 0 0 3px rgba(42,157,143,.26);
  animation:railPulse 2.4s ease-in-out infinite;
}
@keyframes railPulse{
  0%,100%{box-shadow:0 0 0 3px rgba(42,157,143,.26)}
  50%{box-shadow:0 0 0 6px rgba(42,157,143,.1)}
}
.rail__text{
  flex:1 1 auto;
  min-width:0;
  overflow:hidden;
  white-space:nowrap;
  text-overflow:ellipsis;
}
.rail__meta{
  flex:0 0 auto;
  color:rgba(255,216,168,.86);
}

/* ---------- 头部 · 命令栏 ---------- */
.bar{
  position:relative;
  background-color:rgba(20,33,61,.94);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:3px solid transparent;
  border-image:linear-gradient(90deg,var(--red),var(--gold)) 1;
  color:var(--cream);
}
.bar__inner{
  display:flex;
  align-items:center;
  gap:1.25rem;
  max-width:var(--shell);
  margin-inline:auto;
  padding:.7rem var(--gutter);
  min-height:64px;
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:.62rem;
  flex:0 0 auto;
  padding:.46rem 1.1rem .46rem .72rem;
  border-radius:3px;
  background:linear-gradient(120deg,var(--red),var(--red-deep));
  color:#fff;
  transform:skewX(-8deg);
  box-shadow:0 8px 22px rgba(230,57,70,.34);
  transition:box-shadow .18s var(--ease),transform .18s var(--ease);
}
.brand:hover{
  transform:skewX(-8deg) translateY(-1px);
  box-shadow:0 12px 28px rgba(230,57,70,.44);
}
.brand>*{transform:skewX(8deg)}
.brand__mark{
  display:grid;
  place-items:center;
  width:30px;height:30px;
  border-radius:3px;
  background:var(--cream);
  color:var(--red);
  font-family:var(--font-display);
  font-weight:900;
  font-size:1.02rem;
  line-height:1;
}
.brand__text{display:flex;flex-direction:column;gap:.12rem;line-height:1.1}
.brand__name{
  font-family:var(--font-display);
  font-weight:900;
  font-size:1rem;
  letter-spacing:.02em;
  white-space:nowrap;
}
.brand__meta{
  font-family:var(--font-mono);
  font-size:.58rem;
  letter-spacing:.18em;
  color:rgba(255,255,255,.72);
}

.nav-toggle{
  display:none;
  align-items:center;
  gap:.5rem;
  margin-left:auto;
  padding:.5rem .8rem;
  border:1px solid rgba(255,216,168,.4);
  border-radius:8px;
  background:rgba(255,248,240,.06);
  color:var(--cream);
}
.nav-toggle__bars{
  position:relative;
  display:block;
  width:18px;height:2px;
  border-radius:2px;
  background:var(--gold);
  box-shadow:0 -6px 0 var(--gold),0 6px 0 var(--gold);
  transition:background-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-toggle__label{
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.14em;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars{
  background:transparent;
  box-shadow:none;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before,
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{
  content:"";
  position:absolute;
  inset:0;
  border-radius:2px;
  background:var(--gold);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{transform:rotate(-45deg)}

.nav{
  display:flex;
  align-items:center;
  gap:1rem;
  margin-left:auto;
}
.nav__list{display:flex;align-items:center;gap:.1rem}
.nav__item{list-style:none}
.nav__link{
  display:inline-flex;
  align-items:baseline;
  gap:.36rem;
  padding:.46rem .6rem;
  border-radius:6px;
  font-size:.94rem;
  font-weight:600;
  color:rgba(255,248,240,.8);
  transition:background-color .18s var(--ease),color .18s var(--ease),box-shadow .18s var(--ease);
}
.nav__link:hover{background:rgba(255,216,168,.14);color:#fff}
.nav__link[aria-current="page"]{
  color:#fff;
  background:rgba(230,57,70,.24);
  box-shadow:inset 0 -2px 0 var(--gold);
}
.nav__idx{
  font-family:var(--font-mono);
  font-size:.65rem;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--gold);
  opacity:.9;
}
.nav__actions{display:flex;align-items:center;gap:.5rem}

.progress{
  position:absolute;
  left:0;right:0;bottom:0;
  height:3px;
  background:rgba(255,216,168,.14);
  overflow:hidden;
}
.progress__fill{
  display:block;
  width:0;
  height:100%;
  background:linear-gradient(90deg,var(--red),var(--gold));
  transition:width .12s linear;
}

/* ---------- 面包屑 ---------- */
.crumbs{padding-block:1.05rem 0}
.crumbs__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.45rem;
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.06em;
  color:var(--graphite);
}
.crumbs__item{display:inline-flex;align-items:center;gap:.45rem}
.crumbs__item:not(:last-child)::after{content:"/";color:var(--line)}
.crumbs__link{
  text-decoration:underline;
  text-decoration-color:var(--line);
  text-underline-offset:3px;
  transition:color .16s var(--ease),text-decoration-color .16s var(--ease);
}
.crumbs__link:hover{color:var(--red);text-decoration-color:var(--red)}
.crumbs__item[aria-current="page"]{color:var(--ink);font-weight:700}

/* ---------- 标签 / 图片容器 / 筛选 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:.3rem;
  padding:.18rem .6rem;
  border-radius:999px;
  border:1px solid rgba(244,162,97,.55);
  background:var(--gold-soft);
  color:var(--ink);
  font-family:var(--font-mono);
  font-size:.68rem;
  font-weight:600;
  letter-spacing:.06em;
  line-height:1.6;
}
.tag--red{
  background:rgba(230,57,70,.12);
  border-color:rgba(230,57,70,.34);
  color:var(--red-deep);
}
.tag--teal{
  background:rgba(42,157,143,.14);
  border-color:rgba(42,157,143,.42);
  color:#1d6f66;
}

.media-frame{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius);
  background:linear-gradient(135deg,var(--ink),var(--midnight));
  box-shadow:var(--shadow-md);
}
.media-frame>img,
.media-frame>video{
  width:100%;
  height:100%;
  object-fit:cover;
}
.media-frame--wide{aspect-ratio:16/9}
.media-frame--square{aspect-ratio:1/1}

.filter-bar{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.5rem;
  padding:.7rem;
  border:1px solid var(--line);
  border-radius:12px;
  background:var(--mist);
}
.filter-btn{
  padding:.44rem .9rem;
  border:1px solid var(--line);
  border-radius:999px;
  background:#fff;
  color:var(--ink);
  font-size:.86rem;
  font-weight:700;
  transition:background-color .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease);
}
.filter-btn:hover{border-color:var(--red);color:var(--red)}
.filter-btn[aria-pressed="true"]{
  background:var(--ink);
  border-color:var(--ink);
  color:#fff;
}
.filter-count{
  margin-left:auto;
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.06em;
  color:var(--graphite);
}

/* ---------- 显现 ---------- */
.reveal{
  opacity:0;
  transform:translateY(14px);
  transition:opacity .42s var(--ease),transform .42s var(--ease);
}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:clamp(3rem,7vw,5.5rem);
  background:var(--midnight);
  color:rgba(255,248,240,.74);
  border-top:3px solid transparent;
  border-image:linear-gradient(90deg,var(--red),var(--gold)) 1;
}
.footer-top{
  display:grid;
  grid-template-columns:minmax(0,1.15fr) minmax(0,2fr) minmax(0,1.35fr);
  gap:clamp(1.5rem,3vw,3rem);
  max-width:var(--shell);
  margin-inline:auto;
  padding:clamp(2.5rem,5vw,4rem) var(--gutter) clamp(2rem,4vw,3rem);
}

.footer-brand__kicker{
  margin-bottom:.8rem;
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.18em;
  color:var(--gold);
}
.footer-brand__line{
  font-family:var(--font-display);
  font-weight:900;
  font-size:1.22rem;
  line-height:1.36;
  color:#fff;
  max-width:15em;
}
.footer-brand__rule{
  display:block;
  width:64px;
  height:3px;
  margin-top:1rem;
  border-radius:2px;
  background:linear-gradient(90deg,var(--red),var(--gold));
}
.footer-brand__note{
  margin-top:1rem;
  font-size:.86rem;
  line-height:1.7;
  color:rgba(255,248,240,.56);
  max-width:20em;
}

.footer-cols{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:1.5rem;
}
.footer-col__title{
  margin-bottom:.85rem;
  font-family:var(--font-mono);
  font-size:.71rem;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--gold);
}
.footer-col__list{display:grid;gap:.5rem}
.footer-col__link{
  display:inline-flex;
  align-items:center;
  gap:.5rem;
  font-size:.92rem;
  color:rgba(255,248,240,.74);
  transition:color .16s var(--ease),transform .16s var(--ease);
}
.footer-col__link::before{
  content:"";
  width:5px;height:5px;
  flex:0 0 auto;
  border-radius:1px;
  background:var(--red);
  transform:rotate(45deg);
  transition:background-color .16s var(--ease);
}
.footer-col__link:hover{color:#fff;transform:translateX(2px)}
.footer-col__link:hover::before{background:var(--gold)}

.footer-contact{
  padding-left:clamp(1rem,2vw,1.75rem);
  border-left:1px dashed rgba(255,216,168,.28);
}
.footer-contact__row{
  margin-bottom:.85rem;
  font-size:.88rem;
  line-height:1.62;
}
.footer-contact__label{
  display:block;
  margin-bottom:.1rem;
  font-family:var(--font-mono);
  font-size:.65rem;
  letter-spacing:.14em;
  color:var(--teal);
}
.footer-contact__value{color:rgba(255,248,240,.88)}
.footer-note{
  margin-top:1rem;
  font-size:.75rem;
  line-height:1.65;
  color:rgba(255,248,240,.5);
}

.footer-bottom{
  background:rgba(0,0,0,.24);
  border-top:1px solid rgba(255,216,168,.14);
}
.footer-bottom__inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.4rem 1.5rem;
  max-width:var(--shell);
  margin-inline:auto;
  padding:1rem var(--gutter);
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.05em;
  color:rgba(255,248,240,.58);
}
.footer-legal{margin:0}
.footer-legal--icp{margin-inline-start:auto}

/* ---------- 平板 / 小屏 ---------- */
@media (max-width:1120px){
  .nav__link{padding:.44rem .46rem;font-size:.88rem}
  .nav__actions .btn{padding:.5rem .78rem;font-size:.82rem}
}

@media (max-width:1000px){
  .nav-toggle{display:inline-flex}
  .nav{
    position:absolute;
    left:0;right:0;top:100%;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:.7rem;
    margin-left:0;
    padding:1rem var(--gutter) 1.35rem;
    background-color:rgba(20,33,61,.985);
    -webkit-backdrop-filter:blur(16px);
    backdrop-filter:blur(16px);
    border-top:2px solid var(--gold);
    border-bottom:1px solid rgba(255,216,168,.2);
    box-shadow:0 26px 52px rgba(20,33,61,.48);
    max-height:calc(100vh - 6rem);
    overflow-y:auto;
  }
  .nav[data-open]{display:flex}
  .nav__list{flex-direction:column;align-items:stretch;gap:.15rem}
  .nav__link{
    width:100%;
    padding:.68rem .8rem;
    font-size:1rem;
    border-left:2px solid transparent;
  }
  .nav__link[aria-current="page"]{
    box-shadow:none;
    border-left-color:var(--gold);
  }
  .nav__actions{flex-direction:column;align-items:stretch}
  .nav__actions .btn{width:100%}

  .footer-top{grid-template-columns:minmax(0,1fr) minmax(0,1.7fr)}
  .footer-contact{
    grid-column:1 / -1;
    padding-left:0;
    padding-top:1.25rem;
    border-left:0;
    border-top:1px dashed rgba(255,216,168,.28);
  }
}

@media (max-width:760px){
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-legal--icp{margin-inline-start:0}
}

@media (max-width:640px){
  :root{--head-h:6.2rem}
  .rail__inner{font-size:.63rem;gap:.55rem;padding-block:.36rem}
  .rail__meta{display:none}
  .bar__inner{min-height:58px;gap:.7rem}
  .brand{padding:.42rem .85rem .42rem .6rem}
  .brand__mark{width:26px;height:26px;font-size:.9rem}
  .brand__name{font-size:.92rem}
  .brand__meta{font-size:.54rem}
  .grid--2,.grid--3{grid-template-columns:1fr}
  .filter-count{margin-left:0;width:100%}
}

@media (max-width:420px){
  .footer-cols{grid-template-columns:1fr}
  .nav-toggle__label{display:none}
}

@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{opacity:1 !important;transform:none !important}
  .rail__dot{animation:none}
}