/* =========================================================
   /assets/site.css — 华体官网共享外壳
   1 重置与变量 / 2 中文排版 / 3 工具类 / 4 头部
   5 基础组件 / 6 页脚 / 7 响应式 / 8 动效降级
   ========================================================= */

/* ---------- 1 重置与变量 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,h6,p,ul,ol,li,figure,blockquote,dl,dd{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}
a{color:inherit}
table{border-collapse:collapse;width:100%}

:root{
  --ink-900:#061725;      /* 赣江深蓝 */
  --ink-800:#0B2233;      /* 夜航蓝 */
  --ink-700:#12384D;      /* 坐标青 */
  --ink-600:#17455D;
  --green:#3BE0A6;        /* 信号绿 */
  --green-soft:rgba(59,224,166,.14);
  --orange:#FF7A3C;       /* 脉冲橙 */
  --paper:#F3EFE4;        /* 瓷白 */
  --oldpaper:#E8DCC3;     /* 旧纸米 */
  --mist:#9FB0BE;         /* 雾灰 */
  --silver:#5F7789;       /* 刻度银 */
  --alert:#FF5C6E;        /* 警示红 */
  --line:rgba(95,119,137,.32);
  --line-strong:rgba(95,119,137,.55);
  --shell:1280px;
  --gutter:20px;
  --sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --ease:cubic-bezier(.2,.8,.2,1);
}

body{
  min-height:100vh;
  background-color:var(--ink-900);
  background-image:
    radial-gradient(1100px 520px at 50% -8%, rgba(59,224,166,.10), transparent 68%),
    linear-gradient(to right, rgba(95,119,137,.14) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(95,119,137,.10) 1px, transparent 1px);
  background-size:auto, 96px 96px, 96px 96px;
  background-repeat:no-repeat, repeat, repeat;
  background-position:center top, center top, center top;
  color:var(--paper);
  font-family:var(--sans);
  font-size:17px;
  font-weight:400;
  line-height:1.85;
  letter-spacing:.01em;
}

::selection{background:var(--green);color:var(--ink-900)}
:focus-visible{outline:2px solid var(--green);outline-offset:3px}
#main-content{scroll-margin-top:150px}

/* ---------- 2 中文排版 ---------- */
h1,h2,h3,h4,h5{font-weight:900;line-height:1.18;letter-spacing:-.03em;color:var(--paper)}
h1{font-size:clamp(30px,4.4vw,64px)}
h2{font-size:clamp(24px,2.6vw,38px)}
h3{font-size:clamp(19px,1.6vw,24px);letter-spacing:-.01em}
h4{font-size:17px;letter-spacing:0}
p{line-height:1.85}
.lead{font-size:clamp(17px,1.5vw,20px);line-height:1.78;color:var(--paper);max-width:36em}
.prose{max-width:38em}
.prose p{margin-bottom:1.05em}
.prose p:last-child{margin-bottom:0}
.prose a{color:var(--green);text-decoration:none;border-bottom:1px solid rgba(59,224,166,.45)}
.prose strong{color:var(--paper);font-weight:700}

/* ---------- 3 工具类 ---------- */
.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--gutter)}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.08em}
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.hairline{display:block;height:1px;border:0;background:var(--line);margin-block:24px}
.diag-rule{display:block;width:100%;height:1px;background:var(--line-strong);transform:rotate(-.14rad);transform-origin:left center;margin-block:clamp(16px,3vw,32px)}
.eyebrow{display:flex;align-items:center;gap:10px;font-family:var(--mono);font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--orange)}
.eyebrow::before{content:"";display:block;width:22px;height:1px;background:var(--orange)}

.tag{display:inline-flex;align-items:center;gap:6px;padding:3px 9px;border:1px solid var(--line-strong);font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--mist);white-space:nowrap}
.tag--green{color:var(--green);border-color:rgba(59,224,166,.5)}
.tag--orange{color:var(--orange);border-color:rgba(255,122,60,.5)}
.tag--paper{background:var(--paper);color:var(--ink-900);border-color:var(--paper)}

/* ---------- 4 头部 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:linear-gradient(180deg,var(--ink-900) 0%,rgba(6,23,37,.97) 100%);
  border-bottom:1px solid var(--line);
}

.skip-link{
  position:fixed;
  left:16px;
  top:-80px;
  z-index:200;
  padding:10px 18px;
  background:var(--green);
  color:var(--ink-900);
  font-weight:800;
  letter-spacing:.06em;
  text-decoration:none;
  transition:top .18s var(--ease);
}
.skip-link:focus{top:12px}

/* 路径条 */
.path-strip{background:var(--ink-800);border-bottom:1px solid rgba(95,119,137,.28)}
.path-strip__inner{display:flex;align-items:center;gap:14px;min-height:34px;font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--mist);text-transform:uppercase}
.path-strip__tag{color:var(--orange);border:1px solid rgba(255,122,60,.45);padding:1px 6px;flex:none}
.path-strip__track{display:flex;align-items:center;gap:0;min-width:0}
.path-strip__step{display:flex;align-items:center;gap:8px;white-space:nowrap}
.path-strip__step + .path-strip__step::before{content:"→";margin-inline:10px;color:var(--silver)}
.path-strip__step a{color:var(--mist);text-decoration:none;border-bottom:1px dotted rgba(159,176,190,.55);padding-bottom:1px}
.path-strip__step a:hover{color:var(--green);border-bottom-color:var(--green)}
.path-strip__step--now{color:var(--paper)}
.path-strip__dot{width:6px;height:6px;border-radius:50%;background:var(--green);box-shadow:0 0 0 3px var(--green-soft);animation:dotPulse 4s var(--ease) infinite}
.path-strip__coord{margin-left:auto;color:var(--silver);flex:none}

/* 报头 */
.masthead{border-bottom:1px solid rgba(95,119,137,.24)}
.masthead__inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:20px;
  padding-block:20px;
  transition:padding .28s var(--ease);
}
.masthead__meta{display:flex;align-items:center;gap:10px;font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--mist)}
.masthead__rule{display:block;width:34px;height:1px;background:var(--silver);transform:rotate(-8deg)}
.masthead__actions{display:flex;align-items:center;justify-content:flex-end;gap:14px}

.brand{display:inline-flex;align-items:center;gap:14px;text-decoration:none;color:var(--paper)}
.masthead .brand{justify-self:center}
.brand__mark{
  position:relative;
  display:grid;
  place-items:center;
  width:52px;
  height:52px;
  border:1px solid var(--green);
  color:var(--green);
  font-family:var(--mono);
  font-size:16px;
  font-weight:700;
  letter-spacing:.06em;
  flex:none;
  transition:width .28s var(--ease),height .28s var(--ease),font-size .28s var(--ease);
}
.brand__mark::before{content:"";position:absolute;inset:4px;border:1px solid rgba(59,224,166,.35)}
.brand__mark::after{content:"";position:absolute;right:-4px;top:-4px;width:7px;height:7px;background:var(--orange)}
.brand__text{display:flex;flex-direction:column;gap:1px}
.brand__name{font-size:clamp(21px,2.2vw,30px);font-weight:900;line-height:1.1;letter-spacing:.06em;transition:font-size .28s var(--ease)}
.brand__line{font-family:var(--mono);font-size:10px;letter-spacing:.2em;color:var(--mist);text-transform:uppercase}

/* 导航条 */
.nav-bar{border-top:1px solid rgba(95,119,137,.18)}
.nav-bar__inner{display:flex;align-items:center;gap:18px;min-height:52px}
.site-nav{flex:1;min-width:0}
.site-nav__list{display:flex;justify-content:center;align-items:center;gap:2px;flex-wrap:wrap}
.site-nav__list a{
  display:block;
  padding:14px 16px;
  color:var(--paper);
  font-size:15px;
  font-weight:500;
  letter-spacing:.06em;
  text-decoration:none;
  border-bottom:2px solid transparent;
  transition:color .16s var(--ease),background .16s var(--ease),border-color .16s var(--ease);
}
.site-nav__list a:hover{background:var(--ink-700);border-bottom-color:var(--green)}
.site-nav__list a[aria-current="page"]{color:var(--green);background:rgba(18,56,77,.75);border-bottom-color:var(--green)}
.nav-bar__cta{flex:none}

/* 移动导航按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:8px;
  padding:10px 12px;
  border:1px solid var(--line-strong);
  color:var(--paper);
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.16em;
  cursor:pointer;
  transition:color .16s var(--ease),border-color .16s var(--ease);
}
.nav-toggle:hover{color:var(--green);border-color:var(--green)}
.nav-toggle__bars{position:relative;display:block;width:16px;height:9px;border-top:1px solid currentColor;border-bottom:1px solid currentColor}
.nav-toggle__bars::after{content:"";position:absolute;left:0;right:0;top:3px;border-top:1px solid currentColor;transition:opacity .16s var(--ease)}

/* 滚动进度脉冲 */
.scroll-meter{position:absolute;left:0;bottom:-1px;display:block;width:0;height:2px;background:linear-gradient(90deg,var(--green),var(--orange));transition:width .12s linear;z-index:5}

/* 折叠态 */
.site-header[data-condensed] .path-strip{display:none}
.site-header[data-condensed] .masthead__inner{padding-block:8px}
.site-header[data-condensed] .brand__mark{width:40px;height:40px;font-size:12px}
.site-header[data-condensed] .brand__name{font-size:20px}
.site-header[data-condensed] .brand__line{display:none}
.site-header[data-condensed] .nav-bar__inner{min-height:46px}
.site-header[data-condensed] .site-nav__list a{padding-block:11px}

@keyframes dotPulse{
  0%,100%{transform:scale(1);opacity:1}
  50%{transform:scale(1.28);opacity:.65}
}

/* ---------- 5 基础组件 ---------- */
/* 按钮与链接 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:12px 20px;
  border:1px solid transparent;
  color:var(--paper);
  font-size:15px;
  font-weight:700;
  letter-spacing:.05em;
  line-height:1;
  text-decoration:none;
  cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.btn::after{content:"→";font-family:var(--mono);font-size:13px;transition:transform .18s var(--ease)}
.btn:hover{transform:translateY(-1px)}
.btn:hover::after{transform:translateX(3px)}
.btn--primary{background:var(--green);border-color:var(--green);color:var(--ink-900)}
.btn--primary:hover{background:transparent;color:var(--green)}
.btn--ghost{border-color:var(--line-strong);color:var(--paper)}
.btn--ghost:hover{border-color:var(--green);color:var(--green)}
.btn--quiet{padding:8px 0;color:var(--green)}

.ghost-link{
  font-family:var(--mono);
  font-size:11.5px;
  letter-spacing:.16em;
  color:var(--mist);
  text-decoration:none;
  border-bottom:1px solid var(--line-strong);
  padding-bottom:2px;
  white-space:nowrap;
  transition:color .16s var(--ease),border-color .16s var(--ease);
}
.ghost-link:hover{color:var(--green);border-bottom-color:var(--green)}

/* 面包屑 */
.crumbs{margin-bottom:24px}
.crumbs__list{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--mist)}
.crumbs__list a{color:var(--mist);text-decoration:none;border-bottom:1px dotted rgba(159,176,190,.55)}
.crumbs__list a:hover{color:var(--green);border-bottom-color:var(--green)}
.crumbs__sep{color:var(--silver)}
.crumbs__current{color:var(--paper)}

/* 章节与面板 */
.section{position:relative;padding-block:clamp(48px,6vw,88px)}
.section--tight{padding-block:clamp(32px,4vw,56px)}
.section__head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:16px 24px;
  margin-bottom:28px;
  padding-bottom:14px;
  border-bottom:1px solid var(--line);
}
.section__num{flex:none;font-family:var(--mono);font-size:12px;letter-spacing:.18em;color:var(--green)}
.panel{position:relative;background:var(--ink-800);border:1px solid var(--line);padding:clamp(20px,3vw,34px)}
.panel--paper{background:var(--oldpaper);border-color:rgba(6,23,37,.22);color:var(--ink-900)}
.panel--paper h2,.panel--paper h3{color:var(--ink-900)}
.panel--raised{box-shadow:0 28px 64px -44px rgba(0,0,0,.95)}

/* 网格 */
.grid{display:grid;gap:clamp(16px,2vw,24px);grid-template-columns:repeat(12,minmax(0,1fr))}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.span-4{grid-column:span 4}
.span-5{grid-column:span 5}
.span-6{grid-column:span 6}
.span-7{grid-column:span 7}
.span-8{grid-column:span 8}
.span-full{grid-column:1/-1}

/* 图片容器 */
.frame{
  position:relative;
  overflow:hidden;
  aspect-ratio:16/10;
  border:1px solid var(--line-strong);
  background:linear-gradient(150deg,var(--ink-700) 0%,var(--ink-800) 62%,var(--ink-900) 100%);
}
.frame img{width:100%;height:100%;object-fit:cover}
.frame::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(to right, rgba(243,239,228,.10) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(243,239,228,.10) 1px, transparent 1px);
  background-size:48px 48px;
}
.frame--wide{aspect-ratio:21/9}
.frame--tall{aspect-ratio:4/5}
.frame--square{aspect-ratio:1/1}
.frame__tag{
  position:absolute;
  left:0;
  bottom:0;
  z-index:2;
  padding:6px 12px;
  background:var(--ink-900);
  border-top:1px solid var(--line-strong);
  border-right:1px solid var(--line-strong);
  font-family:var(--mono);
  font-size:10.5px;
  letter-spacing:.16em;
  color:var(--green);
}

/* ---------- 6 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(56px,8vw,110px);
  background:linear-gradient(180deg,rgba(11,34,51,.94) 0%,var(--ink-800) 40%,var(--ink-800) 100%);
  border-top:2px solid var(--green);
  color:var(--paper);
}
.site-footer::before{
  content:"";
  position:absolute;
  left:0;
  top:-2px;
  width:min(38%,420px);
  height:2px;
  background:var(--orange);
}

.footer__top{
  display:grid;
  grid-template-columns:minmax(0,.92fr) minmax(0,2.08fr);
  gap:clamp(28px,4vw,56px);
  padding-block:clamp(40px,5vw,64px) clamp(32px,4vw,44px);
  border-bottom:1px solid var(--line);
}
.footer__brand .brand__mark{width:44px;height:44px;font-size:13px}
.footer__brand .brand__name{font-size:22px}
.footer__lede{margin-top:18px;max-width:30ch;color:var(--mist);font-size:14.5px;line-height:1.8}
.footer__actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:22px}

.footer__nav{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:clamp(16px,2vw,28px)}
.footer__title{font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.2em;text-transform:uppercase;color:var(--orange)}
.footer__col ul{display:flex;flex-direction:column;gap:10px;margin-top:14px}
.footer__col a{color:var(--paper);font-size:15px;text-decoration:none;border-bottom:1px solid transparent;transition:color .16s var(--ease),border-color .16s var(--ease)}
.footer__col a:hover{color:var(--green);border-bottom-color:rgba(59,224,166,.55)}

.footer__cycle{padding-block:clamp(32px,4vw,46px);border-bottom:1px solid var(--line)}
.footer__cycle-head{display:flex;align-items:baseline;justify-content:space-between;flex-wrap:wrap;gap:10px 24px;margin-bottom:22px}
.footer__heading{font-size:clamp(20px,2vw,26px);letter-spacing:-.02em}
.footer__hint{color:var(--silver);font-size:10.5px;letter-spacing:.16em;text-transform:uppercase}

.cycle{border-top:1px solid var(--line)}
.cycle__row{
  display:grid;
  grid-template-columns:minmax(0,150px) minmax(0,160px) minmax(0,1fr) minmax(0,1.1fr);
  gap:8px 20px;
  padding:14px 10px;
  border-bottom:1px solid rgba(95,119,137,.22);
  transition:background .16s var(--ease);
}
.cycle__row:hover{background:var(--ink-700)}
.cycle__row.is-now{background:rgba(59,224,166,.07);box-shadow:inset 2px 0 0 var(--green)}
.cycle__period{font-family:var(--mono);font-size:13px;letter-spacing:.04em;color:var(--green)}
.cycle__row.is-now .cycle__period::after{content:" · 当前";color:var(--green);font-size:10.5px}
.cycle__channel{font-family:var(--mono);font-size:12.5px;color:var(--mist)}
.cycle__use{font-size:15px;color:var(--paper);line-height:1.7}
.cycle__note{font-size:13px;color:var(--mist);line-height:1.7}

.footer__contact{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(16px,2.4vw,32px);
  padding-block:clamp(28px,3.4vw,40px) 0;
}
.contact-item{display:grid;grid-template-columns:1fr auto;gap:8px 14px;padding-top:12px;border-top:1px solid var(--line)}
.contact-item__label{grid-column:1/-1;font-size:10.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--orange)}
.contact-item__value{font-family:var(--mono);font-size:14px;letter-spacing:.04em;color:var(--paper);word-break:break-word;align-self:center}
.contact-item__value--wrap{font-family:var(--sans);font-size:14.5px;line-height:1.7;letter-spacing:0;color:var(--mist)}
.copy-btn{
  align-self:center;
  padding:5px 10px;
  border:1px solid var(--line-strong);
  color:var(--mist);
  font-family:var(--mono);
  font-size:10.5px;
  letter-spacing:.14em;
  white-space:nowrap;
  cursor:pointer;
  transition:color .16s var(--ease),border-color .16s var(--ease),background .16s var(--ease);
}
.copy-btn:hover{color:var(--green);border-color:var(--green)}
.copy-btn[data-copied]{color:var(--green);border-color:var(--green);background:var(--green-soft)}

.footer__note{max-width:78ch;padding-block:18px 0;color:var(--mist);font-size:13px;line-height:1.8}

.footer__legal{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px 24px;
  margin-top:22px;
  padding-block:20px 34px;
  border-top:1px solid var(--line);
  font-size:12.5px;
  color:var(--mist);
}
.footer__copy{font-size:12.5px}
.footer__meta{display:flex;flex-wrap:wrap;gap:16px;margin-left:auto}
.footer__meta a{color:var(--mist);font-size:12.5px;text-decoration:none;border-bottom:1px solid transparent}
.footer__meta a:hover{color:var(--green);border-bottom-color:rgba(59,224,166,.55)}
.footer__filing{flex:none;padding:3px 9px;border:1px solid var(--line-strong);color:var(--silver);font-size:11px}

/* ---------- 7 响应式 ---------- */
@media (max-width:1180px){
  .site-nav__list a{padding:14px 11px;font-size:14px}
  .nav-bar__inner{gap:12px}
}

@media (max-width:1024px){
  .masthead__meta{display:none}
  .masthead__inner{grid-template-columns:auto 1fr;gap:14px;padding-block:14px}
  .masthead .brand{justify-self:start}
  .masthead__actions{justify-self:end}
}

@media (max-width:960px){
  :root{--gutter:16px}
  #main-content{scroll-margin-top:120px}

  .nav-toggle{display:inline-flex}
  .nav-toggle[aria-expanded="true"]{color:var(--green);border-color:var(--green)}
  .nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{opacity:0}

  .nav-bar{display:none;background:var(--ink-800)}
  .site-header[data-open] .nav-bar{display:block}
  .site-header[data-open] .nav-toggle{color:var(--green);border-color:var(--green)}
  .nav-bar__inner{flex-direction:column;align-items:stretch;gap:0;min-height:0;padding-block:8px 18px}
  .site-nav__list{flex-direction:column;align-items:stretch;gap:0}
  .site-nav__list a{padding:14px 8px;font-size:16px;border-bottom:1px solid rgba(95,119,137,.22);border-left:2px solid transparent}
  .site-nav__list a:hover{border-bottom-color:rgba(95,119,137,.22);border-left-color:var(--green)}
  .site-nav__list a[aria-current="page"]{background:transparent;border-bottom-color:rgba(95,119,137,.22);border-left-color:var(--green);padding-left:14px}
  .nav-bar__cta{width:100%;margin-top:14px}

  .path-strip__inner{gap:10px;min-height:32px}
  .path-strip__tag{display:none}
  .path-strip__track{overflow-x:auto;white-space:nowrap;scrollbar-width:none}
  .path-strip__track::-webkit-scrollbar{display:none}
  .path-strip__coord{display:none}

  .brand__mark{width:42px;height:42px;font-size:13px}
  .brand__name{font-size:21px}
  .brand__line{display:none}

  .footer__top{grid-template-columns:1fr;gap:36px}
  .footer__nav{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cycle__row{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:6px 16px;padding:14px 8px}
  .cycle__use,.cycle__note{grid-column:1/-1}
  .footer__contact{grid-template-columns:1fr}
  .grid{grid-template-columns:repeat(6,minmax(0,1fr))}
  .span-4,.span-5,.span-6,.span-7,.span-8{grid-column:1/-1}
  .grid--2{grid-template-columns:1fr}
}

@media (max-width:600px){
  body{font-size:16px}
  .masthead__actions .ghost-link{display:none}
  .footer__nav{grid-template-columns:1fr;gap:22px}
  .footer__meta{margin-left:0;width:100%}
  .site-nav__list a{padding-block:13px}
  .frame{aspect-ratio:4/3}
  .frame--wide{aspect-ratio:16/9}
}

/* ---------- 8 动效降级 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
  }
  .path-strip__dot{animation:none}
  .btn:hover{transform:none}
  .btn:hover::after{transform:none}
}