/* ==========================================================================
   HOPOO 主站 · 共享样式 /assets/site.css
   设计语言：校准轨道 · 居中刊头 · 切角面板 · 等宽索引 · 青/琥珀双强调
   ========================================================================== */

/* ---------- 01 设计变量 ---------- */
:root{
  --ink:#0A1628;
  --ink-deep:#071120;
  --cyan:#00E5FF;
  --amber:#FF8A3D;
  --panel:#0E2036;
  --panel-2:#14304F;
  --grid:#1F4E6B;
  --text:#E6F7FF;
  --muted:#9FB6C9;
  --paper:#F5FBFF;
  --warn:#FFD166;
  --teal:#00A8C6;

  --font-title:"Barlow Condensed","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-body:"Inter","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono","SFMono-Regular",Consolas,"Courier New",monospace;

  --shell:1240px;
  --pad:clamp(16px,4.2vw,44px);

  --cut-sm:polygon(6px 0,100% 0,100% calc(100% - 6px),calc(100% - 6px) 100%,0 100%,0 6px);
  --cut-md:polygon(14px 0,100% 0,100% calc(100% - 14px),calc(100% - 14px) 100%,0 100%,0 14px);
  --cut-lg:polygon(26px 0,100% 0,100% calc(100% - 26px),calc(100% - 26px) 100%,0 100%,0 26px);

  --dur:160ms;
  --dur-slow:240ms;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 02 Reset 与基础 ---------- */
*,*::before,*::after{box-sizing:border-box}

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:150px;
}

body{
  margin:0;
  min-height:100vh;
  color:var(--text);
  background-color:var(--ink);
  background-image:
    radial-gradient(1100px 520px at 8% -12%,rgba(0,229,255,.12),transparent 62%),
    radial-gradient(780px 420px at 100% 0%,rgba(255,138,61,.07),transparent 60%),
    linear-gradient(to right,rgba(31,78,107,.22) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(31,78,107,.15) 1px,transparent 1px);
  background-size:auto,auto,72px 72px,72px 72px;
  font-family:var(--font-body);
  font-size:16px;
  font-weight:400;
  line-height:1.75;
  overflow-x:hidden;
}

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

h1,h2,h3,h4,h5,h6{
  margin:0;
  font-family:var(--font-title);
  font-weight:800;
  line-height:1.14;
  letter-spacing:.01em;
  color:var(--text);
}
h1{font-size:clamp(38px,6.4vw,64px)}
h2{font-size:clamp(28px,3.6vw,40px)}
h3{font-size:clamp(22px,2.4vw,28px)}
h4{font-size:20px}
p{margin:0}
figure{margin:0}

a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}

:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
}

/* ---------- 03 文本工具 ---------- */
.mono{font-family:var(--font-mono);font-size:13px;letter-spacing:.06em}
.eyebrow{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.26em;
  color:var(--cyan);
}
.lead{
  max-width:66ch;
  font-size:clamp(17px,1.4vw,19px);
  line-height:1.85;
  color:var(--muted);
}
.u-muted{color:var(--muted)}

/* ---------- 04 布局容器 ---------- */
.shell{
  width:100%;
  max-width:calc(var(--shell) + var(--pad) * 2);
  margin-inline:auto;
  padding-inline:var(--pad);
}

.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}

.rule{
  height:1px;
  border:0;
  margin:clamp(28px,4vw,48px) 0;
  background:linear-gradient(90deg,var(--grid),rgba(31,78,107,.15));
}

/* ---------- 05 按钮 ---------- */
.btn{
  position:relative;
  z-index:0;
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:13px 22px;
  border:0;
  background:transparent;
  color:var(--text);
  font-family:var(--font-body);
  font-size:15px;
  font-weight:600;
  line-height:1.1;
  letter-spacing:.02em;
  cursor:pointer;
  transition:transform var(--dur) var(--ease),color var(--dur) var(--ease);
}
.btn::before{
  content:"";
  position:absolute;
  inset:0;
  z-index:-1;
  background:var(--panel-2);
  clip-path:var(--cut-md);
  transition:background var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn:focus-visible{outline:2px solid var(--cyan);outline-offset:4px}

.btn--accent{color:#20100A}
.btn--accent::before{
  background:var(--amber);
  box-shadow:inset 0 0 0 1px rgba(255,209,102,.45);
}
.btn--accent:hover::before{background:#FFA45F}

.btn--ghost::before{
  background:rgba(14,32,54,.72);
  box-shadow:inset 0 0 0 1px var(--grid);
}
.btn--ghost:hover{color:var(--cyan)}
.btn--ghost:hover::before{box-shadow:inset 0 0 0 1px var(--cyan)}

/* ---------- 06 跳转链接与滚动进度 ---------- */
.skip-link{
  position:fixed;
  top:-120px;
  left:var(--pad);
  z-index:300;
  padding:12px 20px;
  background:var(--cyan);
  color:#04121E;
  font-family:var(--font-mono);
  font-size:13px;
  font-weight:700;
  letter-spacing:.1em;
  clip-path:var(--cut-sm);
  transition:top var(--dur) var(--ease);
}
.skip-link:focus{top:14px}

.scroll-rail{
  position:fixed;
  inset:0 0 auto 0;
  height:3px;
  z-index:250;
  pointer-events:none;
}
.scroll-rail__bar{
  display:block;
  width:100%;
  height:100%;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--cyan),var(--teal) 55%,var(--amber));
  transition:transform 90ms linear;
}

/* ---------- 07 页头 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:200;
  background:rgba(8,18,33,.94);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--grid);
  box-shadow:0 20px 44px -34px rgba(0,229,255,.65);
}

/* 校准状态条 */
.calib-strip{
  border-bottom:1px solid rgba(31,78,107,.72);
  background:linear-gradient(90deg,rgba(0,229,255,.10),rgba(0,229,255,0) 46%,rgba(255,138,61,.08));
  overflow:hidden;
}
.calib-strip__inner{
  display:flex;
  align-items:center;
  gap:14px;
  min-height:36px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.1em;
  color:var(--muted);
  white-space:nowrap;
}
.calib-strip__dot{
  flex:0 0 auto;
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 0 4px rgba(0,229,255,.14);
  animation:hopoo-pulse 2.6s var(--ease) infinite;
}
.calib-strip__label{color:var(--text)}
.calib-strip__line{
  position:relative;
  flex:1 1 auto;
  min-width:24px;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--grid) 18%,var(--grid) 82%,transparent);
  overflow:hidden;
}
.calib-strip__line::after{
  content:"";
  position:absolute;
  top:0;
  left:-32%;
  width:32%;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--cyan),transparent);
  animation:hopoo-sweep 5.4s linear infinite;
}
.calib-strip__meta{color:var(--cyan);opacity:.86}

@keyframes hopoo-pulse{
  0%,100%{opacity:1}
  50%{opacity:.34}
}
@keyframes hopoo-sweep{
  0%{left:-32%}
  100%{left:100%}
}

/* 居中刊头 */
.masthead{position:relative}
.masthead__inner{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);
  align-items:center;
  gap:20px;
  min-height:82px;
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  min-width:0;
  color:var(--text);
}
.brand__mark{
  display:inline-block;
  padding:9px 14px 9px 16px;
  background:var(--panel);
  color:var(--paper);
  font-family:var(--font-title);
  font-size:26px;
  font-weight:800;
  line-height:1;
  letter-spacing:.18em;
  clip-path:var(--cut-sm);
  box-shadow:inset 3px 0 0 var(--cyan);
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease);
}
.brand:hover .brand__mark{background:var(--panel-2);color:var(--cyan)}
.brand__meta{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.2em;
  color:var(--muted);
  white-space:nowrap;
}
.brand--lg .brand__mark{font-size:30px}

.masthead__nav{justify-self:center}
.nav-list{
  display:flex;
  align-items:center;
  gap:2px;
  list-style:none;
  margin:0;
  padding:0;
}
.nav-list a{
  position:relative;
  display:block;
  padding:10px 15px;
  color:var(--muted);
  font-size:15px;
  line-height:1.4;
  clip-path:var(--cut-sm);
  transition:color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.nav-list a::after{
  content:"";
  position:absolute;
  left:15px;
  right:15px;
  bottom:5px;
  height:2px;
  background:var(--cyan);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--dur) var(--ease);
}
.nav-list a:hover{
  color:var(--paper);
  background-color:rgba(0,229,255,.07);
}
.nav-list a:hover::after{transform:scaleX(1)}
.nav-list a[aria-current="page"]{
  color:var(--paper);
  background-color:rgba(0,229,255,.10);
}
.nav-list a[aria-current="page"]::after{transform:scaleX(1)}

.masthead__rail{
  justify-self:end;
  display:flex;
  align-items:center;
  gap:14px;
}
.rail-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 2px;
  color:var(--muted);
  font-size:14px;
  border-bottom:1px solid transparent;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.rail-link:hover{color:var(--cyan);border-bottom-color:var(--cyan)}
.rail-link__idx{
  font-family:var(--font-mono);
  font-size:11px;
  color:var(--cyan);
  opacity:.7;
}

.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  padding:11px 14px;
  background:rgba(14,32,54,.85);
  border:1px solid var(--grid);
  color:var(--text);
  cursor:pointer;
  clip-path:var(--cut-sm);
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle__bars{
  display:inline-flex;
  flex-direction:column;
  gap:4px;
  width:18px;
}
.nav-toggle__bars span{
  display:block;
  height:2px;
  background:currentColor;
  transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease);
}
.nav-toggle__text{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- 08 页脚 ---------- */
.site-footer{
  position:relative;
  isolation:isolate;
  margin-top:clamp(60px,8vw,110px);
  background:var(--ink-deep);
  border-top:1px solid var(--grid);
  color:var(--muted);
  overflow:hidden;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--cyan) 12%,rgba(0,229,255,.25) 46%,transparent 84%);
}
.site-footer::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(31,78,107,.20) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(31,78,107,.14) 1px,transparent 1px);
  background-size:72px 72px;
  -webkit-mask-image:linear-gradient(to bottom,rgba(0,0,0,.9),transparent 72%);
  mask-image:linear-gradient(to bottom,rgba(0,0,0,.9),transparent 72%);
}

.footer__inner{
  position:relative;
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1.65fr);
  gap:clamp(28px,4vw,64px);
  padding-block:clamp(44px,6vw,76px);
}
.footer__lead{
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  gap:18px;
  max-width:46ch;
}
.footer__pitch{
  padding-left:14px;
  border-left:2px solid var(--amber);
  font-size:15.5px;
  line-height:1.85;
  color:var(--muted);
}
.footer__status{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:12px;
  letter-spacing:.06em;
  color:var(--muted);
}

.dot{
  display:inline-block;
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--muted);
}
.dot--cyan{
  background:var(--cyan);
  box-shadow:0 0 0 4px rgba(0,229,255,.14);
  animation:hopoo-pulse 2.6s var(--ease) infinite;
}

.footer__cols{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:clamp(20px,3vw,36px);
}
.footer-col{min-width:0}
.footer-col__title{
  display:flex;
  align-items:baseline;
  gap:10px;
  margin-bottom:14px;
  padding-bottom:12px;
  border-bottom:1px solid var(--grid);
  font-family:var(--font-title);
  font-size:17px;
  font-weight:700;
  letter-spacing:.06em;
  color:var(--text);
}
.footer-col__idx{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--cyan);
}
.footer-links{
  display:grid;
  gap:9px;
  list-style:none;
  margin:0;
  padding:0;
}
.footer-links a{
  display:inline-block;
  color:var(--muted);
  font-size:14.5px;
  border-bottom:1px solid transparent;
  transition:color var(--dur) var(--ease),transform var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.footer-links a:hover{
  color:var(--cyan);
  border-bottom-color:rgba(0,229,255,.5);
  transform:translateX(3px);
}
.footer-col__text{
  margin-bottom:6px;
  font-size:14.5px;
  line-height:1.8;
  color:var(--muted);
  word-break:break-word;
}
.footer-col__note{
  margin-top:14px;
  font-size:11.5px;
  letter-spacing:.1em;
  color:rgba(159,182,201,.72);
}
.footer-col__link{
  color:var(--cyan);
  border-bottom:1px solid rgba(0,229,255,.45);
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.footer-col__link:hover{border-bottom-color:var(--amber);color:var(--amber)}

.footer__base{
  position:relative;
  border-top:1px solid rgba(31,78,107,.7);
  background:rgba(4,10,20,.6);
}
.footer__base__inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 26px;
  padding-block:18px;
}
.footer__copy{
  font-size:11.5px;
  letter-spacing:.1em;
  color:rgba(159,182,201,.78);
}

/* ---------- 09 通用内容组件 ---------- */
.panel{
  position:relative;
  padding:clamp(20px,2.6vw,32px);
  background:var(--panel);
  border:1px solid var(--grid);
  clip-path:var(--cut-md);
}
.panel--quiet{background:rgba(14,32,54,.55)}
.panel--accent{
  background:linear-gradient(155deg,var(--panel-2),var(--ink) 78%);
  box-shadow:inset 0 0 0 1px rgba(0,229,255,.16);
}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 10px;
  background:rgba(20,48,79,.5);
  border:1px solid var(--grid);
  color:var(--muted);
  font-family:var(--font-mono);
  font-size:11px;
  line-height:1;
  letter-spacing:.1em;
  clip-path:var(--cut-sm);
}
.tag--cyan{color:var(--cyan);border-color:rgba(0,229,255,.45)}
.tag--amber{color:var(--amber);border-color:rgba(255,138,61,.5)}
.tag--warn{color:var(--warn);border-color:rgba(255,209,102,.5)}

.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:14px;
  margin-bottom:clamp(22px,3vw,34px);
  padding-bottom:14px;
  border-bottom:1px solid var(--grid);
}
.section-head__idx{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.22em;
  color:var(--cyan);
}
.section-head__title{
  font-family:var(--font-title);
  font-size:clamp(22px,2.6vw,30px);
  font-weight:700;
  color:var(--text);
}
.section-head__note{
  margin-left:auto;
  font-size:13px;
  color:var(--muted);
}

.breadcrumb{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--muted);
}
.breadcrumb ol{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  list-style:none;
  margin:0;
  padding:0;
}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb li+li::before{
  content:"/";
  color:var(--grid);
}
.breadcrumb a{
  color:var(--muted);
  border-bottom:1px solid transparent;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.breadcrumb a:hover{color:var(--cyan);border-bottom-color:var(--cyan)}
.breadcrumb [aria-current="page"]{color:var(--text)}

.media-frame{
  position:relative;
  overflow:hidden;
  background:linear-gradient(160deg,var(--panel-2),var(--ink));
  border:1px solid var(--grid);
  clip-path:var(--cut-md);
}
.media-frame img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(0,229,255,.09) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(0,229,255,.06) 1px,transparent 1px);
  background-size:48px 48px;
}
.media-frame--16x9{aspect-ratio:16/9}
.media-frame--4x3{aspect-ratio:4/3}
.media-frame--1x1{aspect-ratio:1/1}
.media-frame--wide{aspect-ratio:21/9}
.media-frame__tag{
  position:absolute;
  left:16px;
  bottom:14px;
  z-index:2;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 10px;
  background:rgba(7,17,32,.82);
  border:1px solid var(--grid);
  color:var(--cyan);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
}

/* ---------- 10 显现与动效 ---------- */
.has-js [data-reveal]{
  opacity:0;
  transform:translateY(10px);
}
.has-js [data-reveal].is-visible{
  opacity:1;
  transform:none;
  transition:opacity var(--dur-slow) var(--ease),transform var(--dur-slow) var(--ease);
}

/* ---------- 11 响应式 ---------- */
@media (max-width:1040px){
  .masthead__inner{
    grid-template-columns:minmax(0,1fr) auto;
    min-height:70px;
    gap:14px;
  }
  .masthead__nav{
    position:absolute;
    top:100%;
    left:0;
    right:0;
    display:none;
    max-height:calc(100vh - 110px);
    overflow-y:auto;
    padding:10px var(--pad) 24px;
    background:rgba(8,18,33,.99);
    border-top:1px solid var(--grid);
    border-bottom:1px solid var(--grid);
    box-shadow:0 26px 50px -30px rgba(0,0,0,.9);
  }
  .masthead__nav[data-open]{
    display:block;
    animation:hopoo-nav-in var(--dur-slow) var(--ease);
  }
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-list a{
    padding:15px 4px;
    font-size:17px;
    clip-path:none;
    border-bottom:1px solid rgba(31,78,107,.55);
  }
  .nav-list a::after{left:4px;right:auto;bottom:9px;width:26px}
  .nav-toggle{display:inline-flex}
}

@keyframes hopoo-nav-in{
  from{opacity:0;transform:translateY(-8px)}
  to{opacity:1;transform:none}
}

@media (max-width:980px){
  .footer__inner{grid-template-columns:minmax(0,1fr)}
  .footer__lead{max-width:60ch}
}

@media (max-width:900px){
  .grid--2,.grid--3{grid-template-columns:minmax(0,1fr)}
  .section-head__note{margin-left:0;width:100%}
}

@media (max-width:820px){
  .u-hide-sm{display:none}
}

@media (max-width:720px){
  .rail-link{display:none}
  .brand__meta{display:none}
  .masthead__inner{min-height:62px}
  .brand__mark{font-size:23px;padding:8px 12px 8px 14px}
}

@media (max-width:640px){
  .calib-strip__line{display:none}
  .calib-strip__inner{min-height:32px;gap:10px}
}

@media (max-width:560px){
  .masthead__rail .btn--accent{padding:11px 14px;font-size:13.5px}
  .footer__cols{grid-template-columns:minmax(0,1fr)}
  .footer__base__inner{justify-content:flex-start}
  .media-frame--wide{aspect-ratio:16/9}
}

/* ---------- 12 动效偏好 ---------- */
@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-js [data-reveal]{opacity:1;transform:none}
  .btn:hover,.footer-links a:hover{transform:none}
  .scroll-rail__bar{transition:none}
}