*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;min-height:100vh}
h1,h2,h3,h4,h5,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
a{color:inherit;text-decoration:none}
img,picture,svg{display:block;max-width:100%}
:focus-visible{outline:3px solid var(--teal,#16C79A);outline-offset:3px;border-radius:6px}

:root{
  --lava:#F05A28;
  --signal:#D62828;
  --ember:#FF8A3D;
  --ink-green:#173C34;
  --ink-green-deep:#122C26;
  --moss:#4F6B5E;
  --cold:#D9E0E3;
  --paper:#F2F0E9;
  --paper-lift:#FBF9F3;
  --ink:#1E2321;
  --ink-soft:#3A443F;
  --teal:#16C79A;
  --clay:#B96A4B;
  --hot:linear-gradient(100deg,var(--ember) 0%,var(--lava) 46%,var(--signal) 100%);
  --rule:1.5px solid rgba(30,35,33,.18);
  --rule-strong:1.5px solid var(--ink);
  --font-head:"Oswald","Saira Condensed","Haettenschweiler","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Consolas,"Liberation Mono",monospace;
  --shadow-1:0 1px 0 rgba(30,35,33,.06),0 12px 26px -20px rgba(23,60,52,.6);
  --shadow-2:0 2px 0 rgba(30,35,33,.08),0 20px 44px -26px rgba(23,60,52,.75);
  --skew:-4deg;
  --radius-card:16px;
  --radius-pill:999px;
  --shell:1280px;
  --edge:clamp(16px,3vw,32px);
}

body{
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background-color:var(--paper);
  background-image:
    radial-gradient(130% 90% at 100% -10%,rgba(240,90,40,.16),rgba(240,90,40,0) 58%),
    radial-gradient(100% 80% at -10% 110%,rgba(23,60,52,.14),rgba(23,60,52,0) 62%),
    repeating-linear-gradient(90deg,rgba(30,35,33,.045) 0 1px,rgba(30,35,33,0) 1px 104px);
  background-attachment:fixed;
}
::selection{background:var(--lava);color:#fff}
h1,h2,h3,h4{font-family:var(--font-head);font-weight:800;line-height:1.06;letter-spacing:.01em;color:var(--ink)}
h1{font-size:clamp(2.4rem,6vw,5.6rem)}
h2{font-size:clamp(1.7rem,3.2vw,2.5rem)}
h3{font-size:clamp(1.15rem,1.8vw,1.4rem)}
strong{font-weight:700}

/* 容器与排版 */
.wrap{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--edge)}
.wrap--narrow{max-width:880px}
.section{padding-block:clamp(36px,6vw,84px)}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;gap:10px 22px;margin-bottom:clamp(18px,3vw,34px)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-mono);font-size:.7rem;letter-spacing:.22em;text-transform:uppercase;color:var(--clay)}
.eyebrow::before{content:"";display:inline-block;width:22px;height:2px;background:var(--hot)}
.lede{font-size:clamp(1rem,1.35vw,1.15rem);line-height:1.8;color:var(--ink-soft);max-width:62ch}
.prose p{max-width:68ch;color:var(--ink-soft)}
.prose p + p{margin-top:1.1em}
.stack > * + *{margin-top:clamp(12px,1.8vw,22px)}
.hairline{height:1px;border:0;margin:0;background:linear-gradient(90deg,var(--clay),rgba(30,35,33,.12) 60%,rgba(30,35,33,0))}
.tilt{display:inline-block;transform:skewX(var(--skew))}
.grid{display:grid;gap:clamp(14px,2.4vw,26px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}

/* 纸张卡与标签 */
.paper-card{position:relative;isolation:isolate;background:var(--paper-lift);border:var(--rule-strong);border-radius:var(--radius-card);padding:clamp(16px,2.4vw,28px);box-shadow:var(--shadow-1)}
.paper-card::before{content:"";position:absolute;left:18px;right:18px;top:-6px;height:6px;background:var(--cold);border:1.5px solid rgba(30,35,33,.22);border-bottom:0;border-radius:8px 8px 0 0;z-index:-1}
.tag{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:4px;font-family:var(--font-mono);font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;background:var(--cold);color:var(--ink-green);border:1px solid rgba(30,35,33,.14)}
.tag--hot{background:var(--hot);color:#fff;border-color:transparent}
.tag--moss{background:var(--ink-green);color:var(--teal);border-color:transparent}
.tag--clay{background:rgba(185,106,75,.16);color:var(--clay);border-color:rgba(185,106,75,.4)}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:var(--radius-pill);font-family:var(--font-body);font-weight:700;font-size:.94rem;border:1.5px solid transparent;transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease}
.btn--primary{background:var(--hot);color:#fff;box-shadow:0 12px 24px -16px rgba(214,40,40,.95)}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 18px 30px -16px rgba(214,40,40,1)}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn--ghost:hover{background:var(--ink);color:var(--paper)}
.btn--mono{background:var(--ink-green);color:var(--paper);font-family:var(--font-mono);font-size:.76rem;letter-spacing:.14em;text-transform:uppercase;padding:11px 18px}
.btn--mono:hover{background:var(--moss)}

/* 数据与面包屑 */
.data-num{font-family:var(--font-mono);font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:-.01em;color:var(--ink-green)}
.data-num--glow{color:var(--teal)}
.data-num--hot{color:var(--signal)}
.crumbs{margin-bottom:18px;font-family:var(--font-mono);font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;color:var(--moss)}
.crumbs-list{display:flex;flex-wrap:wrap;align-items:center;gap:6px}
.crumbs-link{color:var(--moss);border-bottom:1px solid transparent}
.crumbs-link:hover{color:var(--signal);border-bottom-color:var(--signal)}
.crumbs-sep{color:var(--clay)}
.crumbs-current{color:var(--ink);font-weight:700}

/* 图片容器 */
.media-frame{position:relative;isolation:isolate;margin:0;overflow:hidden;border:var(--rule-strong);border-radius:var(--radius-card);background:var(--cold);aspect-ratio:16/10}
.media-frame img{width:100%;height:100%;object-fit:cover}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--square{aspect-ratio:1/1}
.media-frame--tall{aspect-ratio:3/4}
.media-ph{display:grid;place-items:center;width:100%;height:100%;padding:16px;text-align:center;font-family:var(--font-mono);font-size:.7rem;letter-spacing:.2em;text-transform:uppercase;color:var(--moss);background-image:repeating-linear-gradient(115deg,rgba(23,60,52,.07) 0 2px,rgba(23,60,52,0) 2px 14px),linear-gradient(160deg,#D9E0E3,#C7D2D5)}
.media-cap{margin-top:8px;font-family:var(--font-mono);font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;color:var(--moss)}

/* 显现动画 */
[data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .55s ease,transform .55s cubic-bezier(.22,.7,.24,1)}
[data-reveal="1"]{transition-delay:.05s}
[data-reveal="2"]{transition-delay:.1s}
[data-reveal="3"]{transition-delay:.15s}
[data-reveal="4"]{transition-delay:.2s}
[data-reveal="5"]{transition-delay:.25s}
[data-reveal="6"]{transition-delay:.3s}
[data-reveal][data-revealed="true"]{opacity:1;transform:none}

/* 跳转链接 */
.skip-link{position:fixed;top:8px;left:8px;z-index:300;transform:translateY(-200%);background:var(--ink-green);color:var(--paper);padding:10px 18px;border-radius:var(--radius-pill);font-family:var(--font-mono);font-size:.78rem;letter-spacing:.08em;transition:transform .18s ease}
.skip-link:focus,.skip-link:focus-visible{transform:translateY(0)}

/* 头部 */
.site-header{position:sticky;top:0;z-index:90;padding:10px var(--edge) 0}
.scroll-meter{position:fixed;top:0;left:0;right:0;height:3px;z-index:130;background:rgba(30,35,33,.1);pointer-events:none}
.scroll-meter-bar{display:block;height:100%;width:100%;transform:scaleX(0);transform-origin:0 50%;background:var(--hot)}
.header-tape{display:flex;align-items:center;gap:12px;max-width:var(--shell);margin:0 auto 8px;padding:0 6px;font-family:var(--font-mono);font-size:.66rem;letter-spacing:.18em;text-transform:uppercase;color:var(--moss);transition:opacity .2s ease}
.tape-mark{flex:none;padding:2px 8px;border-radius:2px;background:var(--hot);color:#fff;font-weight:700;letter-spacing:.12em;transform:skewX(var(--skew))}
.tape-text{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tape-line{flex:1;height:1px;background:linear-gradient(90deg,rgba(185,106,75,.85),rgba(30,35,33,.12))}
.tape-dots{flex:none;color:var(--clay);letter-spacing:.16em}
.header-shell{max-width:var(--shell);margin:0 auto}
.nav-island{position:relative;isolation:isolate;display:flex;align-items:center;gap:clamp(8px,2vw,20px);padding:8px 10px 8px 12px;background:linear-gradient(180deg,var(--paper-lift),var(--paper));border:var(--rule-strong);border-radius:var(--radius-pill);box-shadow:var(--shadow-2);transition:box-shadow .2s ease,border-color .2s ease}
.nav-island::after{content:"";position:absolute;left:16px;right:16px;bottom:-5px;height:9px;z-index:-1;border:1.5px solid rgba(30,35,33,.22);border-top:0;border-radius:0 0 14px 14px;background:linear-gradient(180deg,rgba(217,224,227,.8),rgba(217,224,227,0))}
.site-header[data-scrolled="true"] .nav-island{box-shadow:0 3px 0 rgba(30,35,33,.1),0 26px 48px -30px rgba(23,60,52,.95)}
.site-header[data-scrolled="true"] .header-tape{opacity:.55}
.brand{display:inline-flex;align-items:center;gap:10px;padding:2px 4px;border-radius:var(--radius-pill)}
.brand-mark{width:38px;height:38px;flex:none;display:grid;place-items:center;background:var(--hot);color:#fff;font-family:var(--font-head);font-size:1.1rem;font-weight:900;line-height:1;border-radius:10px;transform:skewX(var(--skew));box-shadow:inset 0 0 0 1.5px rgba(255,255,255,.35)}
.brand-text{display:flex;flex-direction:column;line-height:1.08}
.brand-name{font-family:var(--font-head);font-weight:800;font-size:1.02rem;letter-spacing:.04em;color:var(--ink)}
.brand-sub{font-family:var(--font-mono);font-size:.6rem;letter-spacing:.16em;text-transform:uppercase;color:var(--moss)}
.nav{margin-left:auto;min-width:0}
.nav-list{display:flex;align-items:center;gap:2px}
.nav-item{position:relative}
.nav-link{position:relative;display:inline-flex;align-items:center;padding:9px 11px;border-radius:var(--radius-pill);font-size:.85rem;font-weight:600;letter-spacing:.01em;color:var(--ink);white-space:nowrap;transition:background-color .18s ease,color .18s ease}
.nav-link:hover{background:rgba(240,90,40,.12);color:var(--signal)}
.nav-link[aria-current="page"]{color:var(--signal);background:rgba(240,90,40,.1)}
.nav-link[aria-current="page"]::after{content:"";position:absolute;left:50%;bottom:3px;width:16px;height:3px;border-radius:2px;background:var(--signal);transform:translateX(-50%)}
.nav-link--cta{margin-left:6px;padding:9px 16px;background:var(--hot);color:#fff;font-weight:700;box-shadow:0 8px 18px -12px rgba(214,40,40,.95)}
.nav-link--cta:hover{background:var(--hot);color:#fff;filter:brightness(1.05)}
.nav-link--cta[aria-current="page"]{background:var(--hot);color:#fff}
.nav-link--cta[aria-current="page"]::after{display:none}
.nav-toggle{display:none;align-items:center;gap:8px;margin-left:auto;padding:9px 14px;border:var(--rule-strong);border-radius:var(--radius-pill);background:var(--paper-lift);color:var(--ink-green);font-family:var(--font-mono);font-size:.7rem;letter-spacing:.14em;text-transform:uppercase}
.nav-toggle-box{display:inline-flex;flex-direction:column;justify-content:center;gap:3px;width:16px}
.nav-toggle-box span{display:block;height:2px;border-radius:2px;background:currentColor;transition:transform .2s ease,opacity .2s ease}
.nav-toggle[aria-expanded="true"] .nav-toggle-box span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-box span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-box span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
.nav-toggle-label{white-space:nowrap}

/* 页脚 */
.site-footer{position:relative;margin-top:clamp(48px,7vw,96px);padding:clamp(32px,5vw,64px) 0 clamp(20px,3vw,32px);background-image:radial-gradient(120% 80% at 12% 0%,rgba(22,199,154,.14),rgba(22,199,154,0) 60%),linear-gradient(160deg,var(--ink-green) 0%,var(--ink-green-deep) 100%);color:#E9E7DE}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:6px;background:var(--hot)}
.footer-shell{max-width:var(--shell);margin:0 auto;padding-inline:var(--edge)}
.footer-top{display:grid;grid-template-columns:minmax(220px,1fr) minmax(280px,1.25fr) minmax(230px,1fr);gap:clamp(24px,4vw,44px);align-items:start;padding-bottom:clamp(24px,4vw,40px);border-bottom:1px solid rgba(242,240,233,.16)}
.footer-brand-link{display:inline-flex;align-items:center;gap:10px}
.footer-brand-mark{width:34px;height:34px;flex:none;display:grid;place-items:center;background:var(--hot);color:#fff;font-family:var(--font-head);font-size:1rem;font-weight:900;line-height:1;border-radius:9px;transform:skewX(var(--skew))}
.footer-brand-name{font-family:var(--font-head);font-size:1.32rem;font-weight:800;letter-spacing:.04em;color:var(--paper)}
.footer-intro{margin-top:14px;font-size:.92rem;line-height:1.8;color:rgba(242,240,233,.78);max-width:34ch}
.footer-mono{margin-top:14px;font-family:var(--font-mono);font-size:.64rem;letter-spacing:.2em;text-transform:uppercase;color:rgba(22,199,154,.92)}
.footer-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(16px,3vw,32px)}
.footer-col-title{margin-bottom:12px;font-family:var(--font-mono);font-size:.7rem;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:var(--ember)}
.footer-list li + li{margin-top:6px}
.footer-link{display:inline-block;padding:3px 0;font-size:.92rem;color:rgba(242,240,233,.85);border-bottom:1px solid transparent;transition:color .18s ease,border-color .18s ease}
.footer-link:hover,.footer-link:focus-visible{color:var(--paper);border-bottom-color:var(--ember)}
.footer-contact-list{display:grid;gap:10px}
.footer-contact-item{display:grid;gap:1px}
.footer-key{font-family:var(--font-mono);font-size:.62rem;letter-spacing:.16em;text-transform:uppercase;color:rgba(22,199,154,.95)}
.footer-value{font-size:.9rem;line-height:1.6;color:rgba(242,240,233,.9);word-break:break-word}
.footer-copy{margin-top:14px;display:inline-flex;align-items:center;gap:8px;padding:9px 16px;border-radius:var(--radius-pill);border:1.5px solid rgba(255,138,61,.7);background:rgba(255,138,61,.12);color:var(--paper);font-family:var(--font-mono);font-size:.72rem;letter-spacing:.12em;transition:background-color .18s ease,color .18s ease,border-color .18s ease}
.footer-copy:hover{background:var(--ember);border-color:var(--ember);color:var(--ink-green)}
.footer-copy[data-state="ok"]{background:var(--teal);border-color:var(--teal);color:var(--ink-green)}
.footer-copy[data-state="fail"]{background:rgba(214,40,40,.9);border-color:var(--signal);color:#fff}
.footer-copy-hint{min-height:1.5em;margin-top:8px;font-family:var(--font-mono);font-size:.68rem;letter-spacing:.06em;color:var(--teal)}
.footer-note{margin-top:10px;font-size:.78rem;line-height:1.7;color:rgba(242,240,233,.66);max-width:38ch}
.footer-legal{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px 20px;padding:18px 0;border-bottom:1px solid rgba(242,240,233,.16)}
.footer-legal-list{display:flex;flex-wrap:wrap;gap:8px 18px}
.footer-legal-link{font-size:.82rem;color:rgba(242,240,233,.8);border-bottom:1px dashed rgba(242,240,233,.3);padding-bottom:2px;transition:color .18s ease,border-color .18s ease}
.footer-legal-link:hover,.footer-legal-link:focus-visible{color:var(--teal);border-bottom-color:var(--teal)}
.footer-icp{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.08em;color:rgba(242,240,233,.6)}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px 20px;padding-top:16px}
.footer-year{font-size:.78rem;color:rgba(242,240,233,.6)}
.footer-bottom .footer-mono{margin-top:0;color:rgba(242,240,233,.45)}

/* 响应式 */
@media (max-width:1024px){
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-top{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1 / -1}
}
@media (max-width:960px){
  .site-header{padding:8px var(--edge) 0}
  .header-tape{display:none}
  .nav-toggle{display:inline-flex}
  .nav{display:none;position:absolute;top:calc(100% + 12px);left:0;right:0;margin:0;padding:10px;background:var(--paper-lift);border:var(--rule-strong);border-radius:20px;box-shadow:var(--shadow-2);max-height:min(72vh,540px);overflow:auto;z-index:5}
  .nav[data-open="true"]{display:block}
  .nav-list{counter-reset:navidx;flex-direction:column;align-items:stretch;gap:4px}
  .nav-link{display:grid;grid-template-columns:2.2em 1fr;align-items:center;gap:10px;width:100%;padding:12px 14px;border-radius:12px;font-size:.95rem;text-align:left;white-space:normal}
  .nav-link::before{counter-increment:navidx;content:"0" counter(navidx);font-family:var(--font-mono);font-size:.66rem;letter-spacing:.12em;color:var(--clay)}
  .nav-link:hover{background:rgba(240,90,40,.1)}
  .nav-link[aria-current="page"]{background:rgba(240,90,40,.12);color:var(--signal);box-shadow:inset 3px 0 0 var(--signal)}
  .nav-link[aria-current="page"]::after{display:none}
  .nav-link--cta{grid-template-columns:1fr;justify-items:center;margin:8px 0 0;text-align:center}
  .nav-link--cta::before{content:none}
  .nav-link--cta[aria-current="page"]{box-shadow:none}
}
@media (max-width:640px){
  .grid--2,.grid--3{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr}
  .footer-nav{grid-template-columns:1fr 1fr}
  .footer-legal{flex-direction:column;align-items:flex-start}
  .brand-sub{display:none}
  .brand-mark{width:34px;height:34px;font-size:1rem}
  .nav-island{padding:7px 8px 7px 10px;gap:8px}
}
@media (max-width:400px){
  .nav-toggle-label{display:none}
}

/* 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;transition-delay:0s !important}
  [data-reveal]{opacity:1;transform:none}
  .scroll-meter-bar{transition:none}
}