*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}

:root{
  --ink-900:#071A2B;
  --ink-800:#0E2A42;
  --ink-700:#163D5A;
  --paper:#F2E9D8;
  --paper-white:#FAF4E8;
  --coral:#FF6B4A;
  --coral-deep:#D9482E;
  --teal:#4FE3C1;
  --sand:#C9A25C;
  --mist:#8FA6B8;
  --ink-black:#11161C;
  --font-display:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"IBM Plex Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --shell-w:min(1260px, calc(100% - clamp(24px, 6vw, 80px)));
  --radius:16px;
  --hairline:1px solid rgba(201,162,92,.26);
}

body{
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  color:var(--paper);
  background:var(--ink-900);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
::selection{background:var(--coral);color:var(--ink-900)}
:focus-visible{outline:2px solid var(--teal);outline-offset:3px;border-radius:4px}
#main-content:focus-visible{outline-offset:-4px}
.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

.skip-link{
  position:fixed;top:10px;left:10px;z-index:300;
  transform:translateY(-180%);
  padding:10px 20px;border-radius:999px;
  background:var(--paper);color:var(--ink-900);
  font-size:14px;font-weight:500;letter-spacing:.04em;
  transition:transform .22s ease;
}
.skip-link:focus{transform:none}

/* ---------- 头部浮岛 ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  padding:14px 0 0;
  background:linear-gradient(180deg,rgba(7,26,43,.95) 10%,rgba(7,26,43,0) 100%);
}
.header-progress{
  position:absolute;left:0;top:0;width:100%;height:2px;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--teal),var(--coral) 72%,var(--sand));
  pointer-events:none;
}
.header-shell{
  width:var(--shell-w);
  margin-inline:auto;
  display:flex;align-items:center;gap:16px;
  padding:7px 8px 7px 16px;
  border-radius:999px;
  border:var(--hairline);
  background:rgba(14,42,66,.74);
  -webkit-backdrop-filter:blur(14px) saturate(1.2);
  backdrop-filter:blur(14px) saturate(1.2);
  box-shadow:0 22px 52px -38px rgba(0,0,0,.95);
  transition:padding .3s ease,background-color .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-header.is-condensed .header-shell{
  padding:4px 6px 4px 14px;
  background:rgba(7,26,43,.95);
  border-color:rgba(79,227,193,.24);
  box-shadow:0 26px 60px -34px rgba(0,0,0,1);
}

.brand{display:flex;align-items:center;gap:12px;padding:2px 0;flex:none}
.brand-coord{
  position:relative;flex:none;width:34px;height:34px;border-radius:12px;
  background:linear-gradient(150deg,rgba(79,227,193,.18),rgba(255,107,74,.22));
  border:1px solid rgba(201,162,92,.45);
}
.brand-coord::before,.brand-coord::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--teal);
}
.brand-coord::before{width:17px;height:1px;transform:translate(-50%,-50%)}
.brand-coord::after{width:1px;height:17px;transform:translate(-50%,-50%)}
.brand-coord-dot{
  position:absolute;left:50%;top:50%;width:7px;height:7px;border-radius:50%;
  transform:translate(-50%,-50%);
  background:var(--coral);
  box-shadow:0 0 0 3px rgba(255,107,74,.18);
  animation:coordPulse 3.4s ease-in-out infinite;
}
@keyframes coordPulse{
  0%,100%{box-shadow:0 0 0 3px rgba(255,107,74,.18)}
  50%{box-shadow:0 0 0 6px rgba(255,107,74,.06)}
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:15px;font-weight:500;letter-spacing:.06em;color:var(--paper)}
.brand-sub{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.14em;
  color:var(--mist);max-height:18px;overflow:hidden;opacity:1;
  transition:max-height .3s ease,opacity .3s ease;
}
.site-header.is-condensed .brand-sub{max-height:0;opacity:0}

.nav-toggle{
  display:none;align-items:center;gap:9px;margin-left:auto;
  padding:10px 15px;border-radius:999px;
  border:1px solid rgba(143,166,184,.34);
  background:rgba(22,61,90,.62);
  color:var(--paper);
}
.nav-toggle-bars{
  position:relative;width:18px;height:2px;border-radius:2px;
  background:currentColor;
  transition:background-color .2s ease,transform .2s ease;
}
.nav-toggle-bars::before,.nav-toggle-bars::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;
  background:currentColor;transition:top .25s ease,transform .25s ease;
}
.nav-toggle-bars::before{top:-6px}
.nav-toggle-bars::after{top:6px}
.site-header[data-open] .nav-toggle-bars{background:transparent}
.site-header[data-open] .nav-toggle-bars::before{top:0;transform:rotate(45deg)}
.site-header[data-open] .nav-toggle-bars::after{top:0;transform:rotate(-45deg)}

.primary-nav{display:flex;align-items:center;gap:10px;margin-left:auto}
.nav-list{display:flex;align-items:center;gap:2px}
.nav-link{
  display:inline-flex;align-items:center;
  padding:8px 12px;border-radius:999px;
  font-size:13px;font-weight:500;letter-spacing:.04em;
  color:rgba(242,233,216,.74);
  transition:color .2s ease,background-color .2s ease,box-shadow .2s ease;
}
.nav-link:hover{color:var(--paper);background:rgba(22,61,90,.85)}
.nav-link[aria-current="page"]{
  color:var(--teal);
  background:rgba(79,227,193,.12);
  box-shadow:inset 0 0 0 1px rgba(79,227,193,.42);
}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  padding:9px 16px;border-radius:999px;
  background:var(--coral);color:var(--ink-900);
  font-size:13px;font-weight:600;letter-spacing:.03em;
  white-space:nowrap;
  transition:background-color .2s ease,color .2s ease,transform .2s ease;
}
.nav-cta:hover{background:var(--coral-deep);color:var(--paper-white);transform:translateY(-1px)}

/* ---------- 页脚票据存根 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(56px,8vw,120px);
  padding-top:clamp(44px,6vw,80px);
  color:var(--paper);
  border-top:1px solid rgba(201,162,92,.28);
  background:
    radial-gradient(120% 90% at 8% -10%,rgba(22,61,90,.9),rgba(7,26,43,0) 62%),
    radial-gradient(85% 70% at 96% 108%,rgba(255,107,74,.16),rgba(7,26,43,0) 66%),
    var(--ink-900);
  overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:6px;
  background:repeating-linear-gradient(90deg,rgba(201,162,92,.55) 0 14px,transparent 14px 28px);
  opacity:.55;
}
.footer-shell{width:var(--shell-w);margin-inline:auto}
.footer-grid{
  display:grid;gap:clamp(28px,4vw,56px);
  grid-template-columns:minmax(0,1.25fr) minmax(0,1.6fr) minmax(0,1fr);
  align-items:start;
}
.footer-brand{min-width:0}
.footer-coord{
  display:inline-block;margin-bottom:12px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;
  color:var(--mist);
}
.footer-name{
  font-family:var(--font-display);font-weight:300;
  font-size:clamp(26px,3vw,36px);letter-spacing:-.02em;line-height:1.1;
  color:var(--paper);
}
.footer-tagline{
  margin-top:10px;max-width:28ch;
  font-size:14px;line-height:1.7;color:rgba(242,233,216,.72);
}
.footer-cta{
  display:inline-flex;align-items:center;margin-top:18px;
  padding:9px 18px;border-radius:999px;
  font-size:13px;font-weight:600;letter-spacing:.04em;
  color:var(--teal);background:rgba(79,227,193,.1);
  border:1px solid rgba(79,227,193,.45);
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.footer-cta:hover{background:var(--teal);color:var(--ink-900);border-color:var(--teal)}

.footer-columns{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(14px,2vw,28px)}
.footer-col-title{
  margin-bottom:14px;
  font-family:var(--font-mono);font-size:11px;font-weight:500;
  letter-spacing:.18em;text-transform:uppercase;color:var(--sand);
}
.footer-list{display:grid;gap:10px}
.footer-link{
  display:inline-block;font-size:14px;
  color:rgba(242,233,216,.78);
  border-bottom:1px solid transparent;
  transition:color .2s ease,border-color .2s ease;
}
.footer-link:hover{color:var(--paper);border-bottom-color:var(--teal)}

.footer-contact{min-width:0}
.footer-contact-item + .footer-contact-item{margin-top:14px}
.footer-contact-label{
  display:block;margin-bottom:2px;
  font-family:var(--font-mono);font-size:10px;letter-spacing:.18em;
  color:rgba(143,166,184,.9);
}
.footer-contact-value{
  font-family:var(--font-mono);font-size:13px;line-height:1.8;
  color:rgba(242,233,216,.82);word-break:break-word;
}
.footer-dashed{
  margin-top:clamp(32px,4vw,56px);
  border-top:1px dashed rgba(201,162,92,.4);
}
.footer-legal{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:12px 24px;padding:18px 0 26px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;
  color:rgba(143,166,184,.9);
}
.footer-stamp{
  padding:4px 10px;border:1px dashed rgba(201,162,92,.45);
  border-radius:4px;color:rgba(201,162,92,.78);
  font-size:10px;letter-spacing:.2em;
  transform:rotate(-1.5deg);
}

/* ---------- 布局与章节 ---------- */
.shell{width:var(--shell-w);margin-inline:auto}
.section{padding:clamp(48px,7vw,96px) 0}
.section--band{background:rgba(14,42,66,.72)}
.section--paper{background:var(--paper);color:var(--ink-black)}
.section--paper .section-title{color:var(--ink-black)}
.section--paper .lead{color:rgba(17,22,28,.78)}
.section--paper .eyebrow{color:var(--coral-deep)}
.divider-rule{height:1px;border:0;margin:0;background:linear-gradient(90deg,rgba(201,162,92,.7),rgba(201,162,92,0))}

.grid{display:grid;gap:clamp(14px,1.8vw,24px)}
.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))}
.grid--split{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}
.grid--sidebar{grid-template-columns:minmax(0,4fr) minmax(0,8fr)}

.eyebrow{
  display:inline-block;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--sand);
}
.section-title{
  font-family:var(--font-display);font-weight:300;
  font-size:clamp(28px,4.2vw,58px);line-height:1.1;letter-spacing:-.02em;
  color:var(--paper);
}
.lead{
  font-size:clamp(16px,1.3vw,18px);line-height:1.75;
  max-width:60ch;color:rgba(242,233,216,.82);
}
.note{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
  color:var(--mist);
}
.score{
  font-family:var(--font-mono);font-weight:600;
  font-size:clamp(24px,3vw,40px);
  font-variant-numeric:tabular-nums;letter-spacing:-.01em;
  color:var(--teal);
}
.tag{
  display:inline-block;padding:3px 8px;border-radius:3px;
  background:var(--paper);color:var(--ink-black);
  font-size:12px;font-weight:500;letter-spacing:.04em;
}

/* ---------- 按钮与筛选 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:999px;
  font-size:14px;font-weight:500;letter-spacing:.04em;
  border:1px solid transparent;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.btn:hover{transform:translateY(-1px)}
.btn--primary{background:var(--coral);color:var(--ink-900);font-weight:600}
.btn--primary:hover{background:var(--coral-deep);color:var(--paper-white)}
.btn--ghost{background:transparent;color:var(--teal);border-color:rgba(79,227,193,.5)}
.btn--ghost:hover{background:rgba(79,227,193,.12);color:var(--paper-white)}
.btn--paper{background:var(--paper);color:var(--ink-black)}
.btn--paper:hover{background:var(--paper-white)}

.chip{
  display:inline-flex;align-items:center;
  padding:6px 13px;border-radius:999px;
  border:1px solid rgba(143,166,184,.4);
  background:transparent;color:var(--mist);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.chip:hover{color:var(--paper);border-color:rgba(242,233,216,.6)}
.chip.is-active,.chip[aria-pressed="true"]{
  background:var(--coral);border-color:transparent;
  color:var(--ink-900);font-weight:600;
}

/* ---------- 卡片 ---------- */
.card{
  padding:clamp(16px,2vw,24px);
  border-radius:var(--radius);
  background:rgba(14,42,66,.72);
  border:1px solid rgba(143,166,184,.18);
  transition:border-color .25s ease,background-color .25s ease,transform .25s ease;
}
.card:hover{border-color:rgba(79,227,193,.4);transform:translateY(-2px)}
.card--paper{background:var(--paper);color:var(--ink-black);border-color:rgba(17,22,28,.1)}
.card--paper .note{color:rgba(17,22,28,.6)}
.card--slant{border-top-right-radius:0;border-bottom-left-radius:0}

/* ---------- 正文容器 ---------- */
.paper-panel{
  background:var(--paper);color:var(--ink-black);
  border-radius:20px;
  padding:clamp(24px,4vw,52px);
  border:1px solid rgba(17,22,28,.08);
}
.prose{max-width:68ch;font-size:17px;line-height:1.85}
.prose > * + *{margin-top:1.1em}
.prose h2{
  margin-top:2em;font-family:var(--font-display);font-weight:400;
  font-size:clamp(22px,2.4vw,30px);line-height:1.3;letter-spacing:-.01em;
}
.prose h3{margin-top:1.6em;font-size:18px;font-weight:500}
.prose ul,.prose ol{padding-left:1.2em;display:grid;gap:.5em}
.prose ul > li{list-style:disc}
.prose ol > li{list-style:decimal}
.prose a{color:var(--coral-deep);text-decoration:underline;text-underline-offset:3px}
.prose strong{font-weight:600}
.prose--dark{color:var(--paper)}
.prose--dark a{color:var(--teal)}

/* ---------- 面包屑 ---------- */
.breadcrumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;
  color:var(--mist);
}
.breadcrumbs li{display:inline-flex;align-items:center}
.breadcrumbs li + li::before{content:"/";margin-right:8px;color:rgba(143,166,184,.55)}
.breadcrumbs a:hover{color:var(--teal)}
.breadcrumbs [aria-current="page"]{color:rgba(242,233,216,.9)}

/* ---------- 图片容器 ---------- */
.media-frame{
  position:relative;overflow:hidden;
  aspect-ratio:16 / 10;
  border-radius:var(--radius);
  border:1px solid rgba(201,162,92,.22);
  background:linear-gradient(160deg,var(--ink-700),var(--ink-900));
}
.media-frame > img,.media-frame > picture > img{width:100%;height:100%;object-fit:cover}
.media-frame--wide{aspect-ratio:21 / 9}
.media-frame--tall{aspect-ratio:3 / 4}
.media-frame--square{aspect-ratio:1 / 1}
.media-frame--slant{clip-path:polygon(0 0,100% 0,100% 96%,0 100%)}
.media-frame--veil::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(7,26,43,0) 45%,rgba(7,26,43,.62));
}
.media-frame--placeholder{
  background:
    repeating-linear-gradient(90deg,rgba(79,227,193,.1) 0 1px,transparent 1px 48px),
    repeating-linear-gradient(0deg,rgba(79,227,193,.1) 0 1px,transparent 1px 48px),
    linear-gradient(160deg,var(--ink-700),var(--ink-900));
}
.media-frame--placeholder::before{
  content:attr(data-label);
  position:absolute;left:16px;bottom:14px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;
  color:rgba(79,227,193,.85);
}

/* ---------- 滚动显现 ---------- */
[data-reveal]{
  opacity:0;transform:translateY(18px);
  transition:opacity .6s ease,transform .6s cubic-bezier(.22,.7,.3,1);
}
[data-reveal].is-revealed{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1000px){
  .grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--split,.grid--sidebar{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .footer-brand{grid-column:1 / -1}
}
@media (max-width:900px){
  .site-header{padding-top:10px}
  .nav-toggle{display:inline-flex}
  .nav-cta{padding:12px 16px}
  .primary-nav{
    position:absolute;top:calc(100% + 6px);left:50%;
    transform:translateX(-50%);
    width:min(560px,calc(100% - 20px));
    display:none;flex-direction:column;align-items:stretch;gap:12px;
    margin-left:0;padding:18px 16px 20px;
    background:rgba(9,30,48,.98);
    border:1px solid rgba(201,162,92,.3);
    border-radius:22px;
    box-shadow:0 36px 72px -34px rgba(0,0,0,1);
    max-height:calc(100vh - 140px);overflow:auto;
  }
  .site-header[data-open] .primary-nav{display:flex}
  .nav-list{flex-direction:column;align-items:stretch;gap:2px}
  .nav-link{display:block;padding:12px 14px;font-size:15px;border-radius:14px}
  .nav-link:hover{background:rgba(22,61,90,.85)}
}
@media (max-width:700px){
  .grid--2,.grid--3,.grid--4{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-columns{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
  .footer-legal{justify-content:flex-start}
  .brand-sub{display:none}
  .header-shell{padding:6px 6px 6px 12px}
  .media-frame--wide{aspect-ratio:16 / 10}
}
@media (max-width:420px){
  .footer-columns{grid-template-columns:minmax(0,1fr)}
  .footer-stamp{transform: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}
  [data-reveal]{opacity:1;transform:none;transition:none}
  .nav-cta:hover,.card:hover,.btn:hover{transform:none}
}

@media print{
  .site-header,.header-progress,.skip-link,.nav-toggle{display:none!important}
  body{background:#fff;color:#000}
  .site-footer{background:#fff;color:#000;border-top:1px solid #000}
  .card,.paper-panel{box-shadow:none;border:1px solid #999}
  [data-reveal]{opacity:1;transform:none}
  a[href]::after{content:" (" attr(href) ")";font-size:10px;color:#444}
}