:root{
  --ink-900:#07131F;
  --ink-800:#0B1E2F;
  --ink-700:#122E44;
  --line:#24445A;
  --line-soft:rgba(36,68,90,.6);
  --mint:#42F5C8;
  --mint-soft:#9BFFE4;
  --coral:#FF7A5C;
  --coral-deep:#B83B26;
  --info:#5AA9FF;
  --paper:#F4F7F3;
  --paper-ink:#0B1E2F;
  --text:#E4F1F7;
  --text-dim:rgba(228,241,247,.68);
  --text-faint:rgba(228,241,247,.44);

  --font-display:"Barlow Condensed","Noto Sans SC","PingFang SC",sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC",sans-serif;
  --font-mono:"IBM Plex Mono","JetBrains Mono","SFMono-Regular",monospace;

  --w-page:1180px;
  --pad:clamp(16px,4vw,40px);
  --radius:2px;
  --ease:cubic-bezier(.22,.68,.32,1);
  --shadow-sheet:0 26px 60px -34px rgba(0,0,0,.95);
}

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

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:86px;
}

body{
  margin:0;
  min-height:100vh;
  background:
    radial-gradient(1100px 560px at 82% -12%,rgba(66,245,200,.10),transparent 62%),
    radial-gradient(900px 520px at 6% 2%,rgba(90,169,255,.08),transparent 64%),
    var(--ink-900);
  color:var(--text);
  font-family:var(--font-body);
  font-size:1rem;
  line-height:1.75;
  font-weight:400;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}

h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd{margin:0;}
ul,ol{margin:0;}
img,svg,video{display:block;max-width:100%;height:auto;}
a{color:var(--info);}
a:hover{color:var(--mint-soft);}
button{font:inherit;color:inherit;}
table{border-collapse:collapse;width:100%;}
hr{border:0;border-top:1px solid var(--line-soft);margin:0;}

h1,h2,h3{
  font-family:var(--font-display);
  font-weight:700;
  line-height:1.12;
  letter-spacing:.02em;
  color:var(--text);
}
h1{font-size:clamp(2.4rem,6vw,5.2rem);}
h2{font-size:clamp(1.6rem,3vw,2.6rem);}
h3{font-size:clamp(1.2rem,2vw,1.6rem);}
strong{color:var(--mint);font-weight:600;}

:focus-visible{
  outline:2px solid var(--mint);
  outline-offset:3px;
  border-radius:1px;
}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:absolute;
  top:0;
  left:50%;
  z-index:300;
  transform:translate(-50%,-160%);
  padding:10px 22px;
  background:var(--mint);
  color:#04191A;
  font-family:var(--font-mono);
  font-size:.78rem;
  letter-spacing:.1em;
  text-decoration:none;
  border-radius:0 0 2px 2px;
  transition:transform .22s var(--ease);
}
.skip-link:focus{transform:translate(-50%,0);}
.skip-link:focus-visible{outline:2px solid var(--mint-soft);outline-offset:2px;}

/* ---------- 头部 ---------- */
.site-header{
  position:relative;
  z-index:80;
  background:var(--ink-900);
}

.header-strip{
  background:#05101A;
  border-bottom:1px solid var(--line-soft);
}
.header-strip__inner{
  width:100%;
  max-width:var(--w-page);
  margin-inline:auto;
  padding:8px var(--pad);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px 20px;
}
.issue-stamp{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.16em;
  color:var(--text-dim);
  white-space:nowrap;
}
.issue-stamp__dot{
  width:7px;
  height:7px;
  flex:0 0 auto;
  border-radius:50%;
  background:var(--mint);
  box-shadow:0 0 0 3px rgba(66,245,200,.16);
  animation:pulse 2.8s ease-in-out infinite;
}
.quick-links{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:6px 20px;
  list-style:none;
  padding:0;
  font-size:.78rem;
}
.quick-links a{
  color:var(--text-dim);
  text-decoration:none;
  border-bottom:1px solid transparent;
  padding-bottom:1px;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.quick-links a:hover,
.quick-links a:focus-visible{
  color:var(--mint);
  border-bottom-color:var(--mint);
}

.masthead{
  position:relative;
  padding:clamp(18px,3.2vw,34px) 0 clamp(14px,2.4vw,24px);
  border-bottom:1px solid var(--line-soft);
  background:
    repeating-linear-gradient(90deg,rgba(36,68,90,.24) 0 1px,transparent 1px 76px),
    linear-gradient(180deg,#0A1A2A 0%,rgba(7,19,31,.35) 100%);
}
.masthead__inner{
  width:100%;
  max-width:var(--w-page);
  margin-inline:auto;
  padding-inline:var(--pad);
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:clamp(10px,3vw,30px);
}
.masthead__note{
  font-family:var(--font-mono);
  font-size:.66rem;
  letter-spacing:.34em;
  text-transform:uppercase;
  color:var(--text-faint);
  white-space:nowrap;
}
.masthead__note--left{justify-self:start;}
.masthead__note--right{justify-self:end;}

.brand{
  justify-self:center;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:7px;
  text-decoration:none;
  color:var(--text);
}
.brand__name{
  font-family:var(--font-display);
  font-weight:700;
  font-size:clamp(1.85rem,5vw,3.15rem);
  line-height:1;
  letter-spacing:.1em;
  text-indent:.1em;
  color:var(--text);
  transition:color .2s var(--ease);
}
.brand__name em{
  font-style:normal;
  color:var(--mint);
  transition:color .2s var(--ease);
}
.brand:hover .brand__name{color:#FFFFFF;}
.brand:hover .brand__name em{color:var(--mint-soft);}
.brand__tagline{
  font-family:var(--font-mono);
  font-size:.68rem;
  letter-spacing:.26em;
  color:var(--text-dim);
  text-indent:.26em;
}

.nav-band{
  position:sticky;
  top:0;
  z-index:70;
  background:rgba(11,30,47,.95);
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}
.nav-band__inner{
  width:100%;
  max-width:var(--w-page);
  margin-inline:auto;
  padding-inline:var(--pad);
  min-height:58px;
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:clamp(8px,2vw,22px);
}

.primary-nav{
  grid-column:2;
  justify-self:center;
}
.primary-nav ul{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  align-items:center;
  gap:clamp(4px,1.7vw,24px);
  list-style:none;
  padding:0;
}
.nav-link{
  display:block;
  padding:17px 5px;
  font-family:var(--font-display);
  font-size:1.02rem;
  letter-spacing:.14em;
  color:rgba(228,241,247,.76);
  text-decoration:none;
  white-space:nowrap;
  border-bottom:2px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.nav-link:hover,
.nav-link:focus-visible{color:var(--mint-soft);}
.nav-link[aria-current="page"]{
  color:var(--mint);
  border-bottom-color:var(--mint);
}

.nav-band__cta{
  grid-column:3;
  justify-self:end;
}

.nav-toggle{
  grid-column:1;
  justify-self:start;
  display:none;
  align-items:center;
  gap:9px;
  padding:8px 12px 8px 10px;
  background:transparent;
  color:var(--mint);
  border:1px solid var(--line);
  border-radius:var(--radius);
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.14em;
  cursor:pointer;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.nav-toggle:hover{border-color:var(--mint);}
.nav-toggle__bars{
  display:block;
  width:16px;
  flex:0 0 auto;
}
.nav-toggle__bars i{
  display:block;
  height:2px;
  margin:3px 0;
  background:currentColor;
  transition:transform .22s var(--ease),opacity .18s var(--ease);
}
.nav-toggle[aria-expanded="true"]{
  color:var(--coral);
  border-color:rgba(255,122,92,.55);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1){transform:translateY(5px) 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(-5px) rotate(-45deg);}

@keyframes pulse{
  0%,100%{box-shadow:0 0 0 3px rgba(66,245,200,.16);}
  50%{box-shadow:0 0 0 7px rgba(66,245,200,.04);}
}
@keyframes nav-in{
  from{opacity:0;transform:translateY(-8px);}
  to{opacity:1;transform:none;}
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5em;
  padding:.72em 1.35em;
  font-family:var(--font-mono);
  font-size:.8rem;
  letter-spacing:.1em;
  line-height:1.25;
  text-decoration:none;
  border:1px solid transparent;
  border-radius:var(--radius);
  cursor:pointer;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.btn--accent{
  background:var(--mint);
  border-color:var(--mint);
  color:#04191A;
  font-weight:600;
}
.btn--accent:hover,
.btn--accent:focus-visible{
  background:var(--mint-soft);
  border-color:var(--mint-soft);
  color:#04191A;
  transform:translateY(-1px);
}
.btn--ghost{
  background:transparent;
  border-color:rgba(66,245,200,.42);
  color:var(--mint);
}
.btn--ghost:hover,
.btn--ghost:focus-visible{
  background:rgba(66,245,200,.1);
  border-color:var(--mint);
  color:var(--mint-soft);
}
.btn--paper{
  background:var(--paper);
  border-color:var(--paper);
  color:var(--paper-ink);
}
.btn--paper:hover,
.btn--paper:focus-visible{background:#FFFFFF;color:var(--paper-ink);}
.btn--sm{padding:.52em 1em;font-size:.72rem;letter-spacing:.08em;}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(48px,8vw,96px);
  background:linear-gradient(180deg,rgba(11,30,47,.35) 0%,rgba(7,19,31,.94) 100%),var(--ink-800);
  border-top:1px solid var(--line);
  color:var(--text);
  padding-top:clamp(38px,6vw,70px);
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:3px;
  background:linear-gradient(90deg,var(--mint) 0%,rgba(66,245,200,0) 38%,rgba(255,122,92,0) 60%,var(--coral) 100%);
}
.footer-grid{
  width:100%;
  max-width:var(--w-page);
  margin-inline:auto;
  padding:0 var(--pad) clamp(26px,4vw,44px);
  display:grid;
  grid-template-columns:1.6fr repeat(3,minmax(110px,1fr));
  gap:clamp(22px,3.6vw,44px);
}
.footer-brand__name{
  font-family:var(--font-display);
  font-weight:700;
  font-size:clamp(1.5rem,3vw,2rem);
  letter-spacing:.1em;
  line-height:1.2;
  margin-bottom:10px;
}
.footer-brand__note{
  font-size:.9rem;
  line-height:1.8;
  color:var(--text-dim);
  max-width:36ch;
  margin-bottom:20px;
}
.footer-contact{
  display:grid;
  gap:8px;
  font-style:normal;
}
.footer-contact__row{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:4px 10px;
  font-size:.84rem;
}
.footer-contact__label{
  flex:0 0 auto;
  min-width:34px;
  font-family:var(--font-mono);
  font-size:.66rem;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--text-faint);
}
.footer-contact__value{
  color:var(--text);
  -webkit-user-select:all;
  user-select:all;
  word-break:break-word;
}
.footer-col__title{
  margin-bottom:14px;
  padding-bottom:8px;
  border-bottom:1px solid var(--line-soft);
  font-family:var(--font-mono);
  font-size:.7rem;
  font-weight:500;
  letter-spacing:.2em;
  line-height:1.4;
  text-transform:uppercase;
  color:var(--mint);
}
.footer-links{
  list-style:none;
  padding:0;
  display:grid;
  gap:9px;
}
.footer-links a{
  display:inline-block;
  font-size:.9rem;
  color:var(--text-dim);
  text-decoration:none;
  transition:color .18s var(--ease);
}
.footer-links a::before{
  content:"";
  display:inline-block;
  width:5px;
  height:5px;
  margin-right:10px;
  vertical-align:middle;
  background:var(--line);
  transform:rotate(45deg) translateY(-1px);
  transition:background-color .18s var(--ease);
}
.footer-links a:hover,
.footer-links a:focus-visible{color:var(--mint);}
.footer-links a:hover::before,
.footer-links a:focus-visible::before{background:var(--mint);}

.footer-base{
  border-top:1px solid var(--line-soft);
  background:rgba(7,19,31,.55);
}
.footer-base__inner{
  width:100%;
  max-width:var(--w-page);
  margin-inline:auto;
  padding:16px var(--pad) 26px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:8px 24px;
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.06em;
  color:var(--text-faint);
}
.footer-icp{white-space:nowrap;}

/* ---------- 通用结构 ---------- */
.container{
  width:100%;
  max-width:var(--w-page);
  margin-inline:auto;
  padding-inline:var(--pad);
}
.container--narrow{max-width:820px;}

.breadcrumbs{
  width:100%;
  max-width:var(--w-page);
  margin-inline:auto;
  padding:20px var(--pad) 0;
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.06em;
  color:var(--text-faint);
}
.breadcrumbs ol{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:0 8px;
  list-style:none;
  padding:0;
}
.breadcrumbs li{
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.breadcrumbs li:not(:last-child)::after{
  content:"/";
  color:var(--line);
}
.breadcrumbs a{
  color:var(--text-dim);
  text-decoration:none;
}
.breadcrumbs a:hover,
.breadcrumbs a:focus-visible{color:var(--mint);}
.breadcrumbs [aria-current="page"]{color:var(--mint);}

.section{padding-block:clamp(34px,5.5vw,68px);}
.section__head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:14px;
  margin-bottom:clamp(20px,3vw,32px);
  padding-bottom:14px;
  border-bottom:1px solid var(--line-soft);
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:9px;
  margin-bottom:10px;
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--mint);
}
.eyebrow::before{
  content:"";
  width:22px;
  height:1px;
  background:var(--mint);
}

.grid{
  display:grid;
  gap:clamp(16px,2.4vw,26px);
}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(228px,1fr));}
.grid--asym{grid-template-columns:1.35fr .85fr;}

.panel{
  position:relative;
  padding:clamp(18px,2.4vw,26px);
  background:var(--ink-800);
  border:1px solid var(--line);
  border-radius:var(--radius);
}
.panel--raised{background:var(--ink-700);}
.panel--paper{
  background:var(--paper);
  border-color:#D6E2DC;
  color:var(--paper-ink);
  box-shadow:var(--shadow-sheet);
}
.panel--paper::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  width:58px;
  height:3px;
  background:var(--coral);
}
.panel--paper h2,
.panel--paper h3,
.panel--paper h4{color:var(--paper-ink);}
.panel--paper p{color:rgba(11,30,47,.78);}
.panel--paper strong{color:var(--coral-deep);}
.panel--paper a{color:var(--coral-deep);}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 9px;
  font-family:var(--font-mono);
  font-size:.68rem;
  letter-spacing:.12em;
  line-height:1.5;
  text-transform:uppercase;
  color:var(--text-dim);
  background:rgba(18,46,68,.7);
  border:1px solid var(--line);
  border-radius:2px;
  white-space:nowrap;
}
.tag--mint{
  color:var(--mint);
  background:rgba(66,245,200,.08);
  border-color:rgba(66,245,200,.4);
}
.tag--coral{
  color:var(--coral);
  background:rgba(255,122,92,.1);
  border-color:rgba(255,122,92,.45);
}
.tag--paper{
  color:var(--coral-deep);
  background:rgba(255,122,92,.14);
  border-color:rgba(184,59,38,.35);
}

/* ---------- 图片容器基础 ---------- */
.figure{margin:0;}
.figure__caption{
  margin-top:9px;
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.04em;
  color:var(--text-faint);
}
.media{
  position:relative;
  display:block;
  overflow:hidden;
  aspect-ratio:16 / 10;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:
    radial-gradient(120% 90% at 18% 0%,rgba(66,245,200,.16),transparent 58%),
    radial-gradient(80% 70% at 100% 100%,rgba(255,122,92,.14),transparent 60%),
    linear-gradient(140deg,var(--ink-800) 0%,var(--ink-700) 55%,var(--ink-900) 100%);
}
.media img{
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(1.05) contrast(1.03);
}
.media--wide{aspect-ratio:21 / 9;}
.media--square{aspect-ratio:1 / 1;}
.media--tall{aspect-ratio:3 / 4;}
.media--shear{clip-path:polygon(0 0,100% 0,100% 86%,0 100%);}
.media__tag{
  position:absolute;
  left:12px;
  bottom:12px;
  z-index:2;
}

/* ---------- 交互产物 ---------- */
.scroll-progress{
  position:fixed;
  inset:0 0 auto 0;
  height:3px;
  z-index:200;
  background:rgba(36,68,90,.5);
  pointer-events:none;
}
.scroll-progress__bar{
  display:block;
  width:100%;
  height:100%;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--mint) 0%,var(--mint) 64%,var(--coral) 100%);
  will-change:transform;
}

.has-reveal [data-reveal]{
  opacity:0;
  transform:translateY(14px);
}
.has-reveal [data-reveal].is-revealed{
  opacity:1;
  transform:none;
  transition:opacity .6s var(--ease),transform .6s var(--ease);
}

/* ---------- 工具类 ---------- */
.mono{font-family:var(--font-mono);letter-spacing:.04em;}
.text-dim{color:var(--text-dim);}
.visually-hidden{
  position:absolute;
  width:1px;
  height:1px;
  margin:-1px;
  padding:0;
  overflow:hidden;
  clip:rect(0 0 0 0);
  clip-path:inset(50%);
  white-space:nowrap;
  border:0;
}

#main-content{scroll-margin-top:80px;}

/* ---------- 响应式 ---------- */
@media (max-width:900px){
  .masthead__note{display:none;}
  .masthead__inner{grid-template-columns:1fr;}
  .brand{justify-self:center;}

  .nav-band__inner{
    grid-template-columns:auto 1fr auto;
    column-gap:10px;
    row-gap:0;
    padding-block:9px;
    min-height:0;
  }
  .nav-toggle{
    display:inline-flex;
    grid-column:1;
    grid-row:1;
  }
  .nav-band__cta{
    grid-column:3;
    grid-row:1;
  }
  .primary-nav{
    grid-column:1 / -1;
    grid-row:2;
    justify-self:stretch;
    width:100%;
    display:none;
  }
  .primary-nav[data-open="true"]{
    display:block;
    animation:nav-in .26s var(--ease) both;
  }
  .primary-nav ul{
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:6px 0 14px;
    border-top:1px solid var(--line-soft);
    margin-top:9px;
  }
  .nav-link{
    padding:13px 4px 13px 12px;
    font-size:1.02rem;
    letter-spacing:.1em;
    border-bottom:1px solid var(--line-soft);
    border-left:2px solid transparent;
  }
  .nav-link[aria-current="page"]{
    border-bottom-color:var(--line-soft);
    border-left-color:var(--mint);
    background:rgba(66,245,200,.07);
  }

  .footer-grid{grid-template-columns:1fr 1fr;}
  .footer-brand{grid-column:1 / -1;}
  .grid--2,.grid--asym{grid-template-columns:1fr;}
}

@media (max-width:560px){
  .header-strip__inner{flex-wrap:wrap;gap:5px 14px;padding-block:7px;}
  .issue-stamp{font-size:.64rem;letter-spacing:.12em;}
  .quick-links{font-size:.72rem;gap:5px 14px;}
  .brand__tagline{font-size:.6rem;letter-spacing:.16em;text-indent:.16em;}
  .nav-band__cta{padding:.5em .78em;font-size:.66rem;letter-spacing:.04em;}
  .nav-toggle{padding:7px 10px;font-size:.66rem;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-base__inner{font-size:.68rem;justify-content:flex-start;}
  .footer-icp{white-space:normal;}
  .breadcrumbs{padding-top:16px;font-size:.68rem;}
}

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

@media print{
  body{background:#FFFFFF;color:#0B1E2F;}
  .site-header,.site-footer,.scroll-progress,.nav-toggle{display:none !important;}
  a{color:#0B1E2F;text-decoration:underline;}
}