:root {
  --bg:#F8F1E5;
  --bg-top:#FCF8F0;
  --bg-bottom:#F3EADB;
  --panel:#FFFCF7;
  --panel-2:#F1E7D6;
  --paper-bar:#F7EFE2;
  --paper-card:#FBF5EB;
  --border:#E6D8C3;
  --border-soft:#EEE3D2;
  --border-strong:#D7C3A7;
  --accent:#DC2F55;
  --accent-dark:#A81E3E;
  --coral:#F2667E;
  --text:#2A1C14;
  --text-muted:#6E5A4B;
  --text-faint:#9A8574;
  --success:#1F9D6B;
  --success-lite:#62D2A2;
  --warn:#C98410;
  --error:#C62E2E;
  --white:#FFFFFF;
  --ink:#2A1C14;
  --on-ink:#F8F1E5;
  --on-ink-muted:rgba(248,241,229,.72);
  --on-ink-line:rgba(248,241,229,.12);
  --on-ink-fill:rgba(248,241,229,.045);
  --on-ink-edge:rgba(255,252,247,.16);
  --ribbon:rgba(220,47,85,.05);
  --accent-a05:rgba(220,47,85,.05);
  --accent-a12:rgba(220,47,85,.12);
  --accent-a16:rgba(220,47,85,.16);
  --accent-a22:rgba(220,47,85,.22);
  --accent-a30:rgba(220,47,85,.30);
  --coral-a20:rgba(242,102,126,.20);
  --coral-a28:rgba(242,102,126,.28);
  --coral-glow:rgba(255,214,222,.85);
  --success-a12:rgba(31,157,107,.12);
  --success-a30:rgba(31,157,107,.30);
  --success-lite-a16:rgba(98,210,162,.16);
  --success-lite-a40:rgba(98,210,162,.40);
  --ink-a06:rgba(42,28,20,.06);
  --ink-a10:rgba(42,28,20,.10);
  --ink-a14:rgba(42,28,20,.14);
  --ink-a45:rgba(42,28,20,.45);
  --hl:rgba(255,255,255,.92);
  --transparent:rgba(255,255,255,0);
  --flag-red:#D7263D;
  --flag-hk:#DE2910;
  --flag-blue:#1F3E95;
  --flag-navy:#142A6E;
  --flag-white:#FFFFFF;
  --font-display:"Iowan Old Style", Georgia, "Times New Roman", "Songti SC", "Source Han Serif SC", "Noto Serif CJK SC", "STSong", serif;
  --font-body:"Inter", "Noto Sans SC", "Noto Sans JP", "Noto Sans KR", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono:"JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --r-xs:4px;
  --r-sm:6px;
  --r:8px;
  --r-pill:999px;
  --r-dot:50%;
  --fs-display:64px;
  --fs-h2:40px;
  --fs-h3:24px;
  --fs-body:16px;
  --fs-small:14px;
  --weight-display:800;
  --weight-strong:700;
  --weight-medium:600;
  --gutter:24px;
  --content-max:1280px;
  --reading-max:840px;
  --header-height:68px;
  --anchor-offset:88px;
  --toc-offset:88px;
  --toc-clearance:164px;
  --ease:cubic-bezier(.2,.7,.2,1);
  --duration:.2s;
  --shadow-panel:inset 0 1px 0 var(--hl), 0 12px 24px -16px var(--ink-a10), 0 34px 80px -24px var(--accent-a12);
  --shadow-float:0 14px 28px -16px var(--accent-a30), 0 2px 6px var(--ink-a06);
  --shadow-ink:inset 0 1px 0 var(--on-ink-edge), 0 28px 56px -18px var(--ink-a45), 0 6px 14px -6px var(--ink-a14);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:var(--anchor-offset);scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font-body);font-size:var(--fs-body);line-height:1.6;-webkit-font-smoothing:antialiased}
[hidden]{display:none!important}
img,svg,video{max-width:100%;vertical-align:middle}
img{height:auto}
button,input,select,textarea{font:inherit}
button,a,input,select,textarea,summary{-webkit-tap-highlight-color:var(--accent-a12)}
button{color:inherit;cursor:pointer}
a{color:inherit;text-underline-offset:.2em}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:var(--r-xs)}
::selection{background:var(--coral-a28);color:var(--text)}
h1,h2,h3{font-family:var(--font-display);font-weight:var(--weight-display);line-height:1.2;text-wrap:balance;overflow-wrap:break-word}
h1,.h1{font-size:clamp(52px,4.45vw,72px);line-height:1.1;letter-spacing:-.02em}
h2{font-size:var(--fs-h2);margin:0 0 24px}
h3{font-size:var(--fs-h3);margin:0 0 16px}
p{margin:0 0 20px}
ul,ol{padding-left:1.4em}
li+li{margin-top:.35em}
code{font-family:var(--font-mono);font-size:.88em;overflow-wrap:anywhere;background:var(--panel-2);border-radius:var(--r-xs);padding:.1em .3em}
pre{max-width:100%;overflow-x:auto;padding:24px;background:var(--ink);color:var(--on-ink);border-radius:var(--r);line-height:1.7}
pre code{white-space:pre;overflow-wrap:normal;background:none;padding:0;color:inherit}
hr{border:0;border-top:1px solid var(--border);margin:32px 0}
.no-break{white-space:nowrap}
.mono{font-family:var(--font-mono)}
.muted{color:var(--text-muted)}
.accent{color:var(--accent)}
.shell,.wrap{width:100%;max-width:var(--content-max);margin-inline:auto;padding-inline:var(--gutter)}
.reading-wrap{width:100%;max-width:var(--reading-max);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-top:80px;padding-bottom:80px}
.section-head{max-width:760px;margin-bottom:40px}
.section-head p{color:var(--text-muted)}
.grid{display:grid;gap:24px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-5{grid-template-columns:repeat(5,minmax(0,1fr))}
:where(.grid,.hero-grid,.footer-grid,.route-tabs)>*{min-width:0}
.panel,.card{background:var(--panel);border:1px solid var(--border);border-radius:var(--r);box-shadow:var(--shadow-panel);padding:28px;min-width:0}
.kicker{margin:0 0 20px;font-family:var(--font-mono);font-size:13px;font-weight:var(--weight-medium);letter-spacing:.06em;text-transform:uppercase;color:var(--accent);line-height:20px}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin:0 0 28px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:52px;padding:12px 28px;border:1px solid var(--transparent);border-radius:var(--r);font-family:var(--font-body);font-size:16px;font-weight:var(--weight-strong);text-decoration:none;white-space:nowrap;flex-shrink:0;transition:transform var(--duration) ease,box-shadow var(--duration) ease}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn svg{width:16px;height:16px;flex-shrink:0;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.btn-primary{background:linear-gradient(120deg,var(--accent) 0%,var(--accent) 35%,var(--coral) 100%);color:var(--white);box-shadow:inset 0 1px 0 var(--coral-glow),0 14px 28px -12px var(--accent-a30)}
.btn-ghost,.btn-secondary{background:var(--panel);color:var(--text);border-color:var(--border-strong)}
.btn-text{color:var(--accent-dark);background:var(--transparent)}
.btn-small{min-height:44px;padding:8px 18px;font-size:var(--fs-small)}
.btn:disabled,.btn[aria-disabled="true"]{background:var(--panel-2);color:var(--text-muted);box-shadow:none;cursor:not-allowed;transform:none}
.notice{background:var(--ink);color:var(--on-ink);font-size:13.5px}
.notice-in{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:44px}
.notice-msg{display:flex;align-items:center;gap:12px;margin:0}
.notice-tag{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;color:var(--coral);flex-shrink:0}
.notice-pill{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:28px;padding:3px 14px;border-radius:var(--r-pill);background:var(--accent);color:var(--white);font-size:13px;font-weight:var(--weight-medium);text-decoration:none;flex-shrink:0;transition:transform var(--duration) ease}
.notice-pill:hover{transform:translateY(-1px)}
.notice-pill svg{width:12px;height:12px;stroke:currentColor;fill:none;stroke-width:1.8}
.head{position:relative;z-index:60;background:var(--bg-top);border-bottom:1px solid var(--border-soft)}
.head-in{display:flex;align-items:center;height:var(--header-height);gap:0}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--text);flex-shrink:0}
.brand img{width:32px;height:32px;display:block;flex-shrink:0}
.brand-word{font-family:var(--font-display);font-weight:var(--weight-display);font-size:22px;letter-spacing:-.01em;line-height:1}
.brand-zh{font-size:var(--fs-small);font-weight:500;color:var(--text-muted)}
.nav{margin-left:40px}
.nav ul{display:flex;align-items:center;list-style:none;margin:0;padding:0;gap:24px}
.nav li{margin:0}
.nav a{display:inline-flex;align-items:center;min-height:44px;font-size:14.5px;font-weight:500;color:var(--text-muted);text-decoration:none;white-space:nowrap}
.nav a:hover{color:var(--text)}
.nav a[aria-current="page"]{color:var(--text);font-weight:var(--weight-strong)}
.head-tools{margin-left:auto;display:flex;align-items:center;gap:16px}
.lang-control{position:relative}
.lang{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-width:44px;width:auto;min-height:44px;font:inherit;font-size:14px;color:var(--text-muted);background:none;border:0;padding:6px 4px;white-space:nowrap}
.lang span{white-space:nowrap}
.lang-menu{position:absolute;right:0;top:calc(100% + 8px);min-width:180px;padding:8px;background:var(--panel);border:1px solid var(--border);border-radius:var(--r);box-shadow:var(--shadow-panel);z-index:4}
.lang-menu a{display:flex;align-items:center;min-height:44px;padding:8px 12px;text-decoration:none;color:var(--text)}
.lang-menu a:hover,.lang-menu a[aria-current]{background:var(--panel-2);border-radius:var(--r-xs)}
.login{display:inline-flex;align-items:center;justify-content:center;min-height:38px;padding:7px 20px;border:1px solid var(--text);border-radius:var(--r);background:var(--panel);color:var(--text);font-size:14px;font-weight:var(--weight-medium);text-decoration:none;white-space:nowrap;flex-shrink:0;transition:transform var(--duration) ease}
.login:hover{transform:translateY(-1px)}
.menu-toggle{display:none;align-items:center;justify-content:center;min-width:44px;min-height:44px;border:1px solid var(--border);background:var(--panel);border-radius:var(--r);font-size:22px}
.mobile-drawer{display:none}
html.nav-open{overflow:hidden}
.footer{background:var(--panel-2);border-top:1px solid var(--border);padding-top:56px;padding-bottom:28px}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:48px}
.footer-brand p{color:var(--text-muted);max-width:360px;margin-top:20px}
.footer-title{font-family:var(--font-mono);font-size:13px;font-weight:var(--weight-medium);color:var(--accent-dark);margin:0 0 16px}
.footer-links{list-style:none;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px 20px;padding:0;margin:0}
.footer-links li{margin:0}
.footer a:not(.brand){display:inline-flex;align-items:center;min-height:32px;text-decoration:none;font-size:14px}
.footer a:hover{text-decoration:underline}
.footer-languages{display:flex;gap:12px 20px;flex-wrap:wrap;margin-top:32px;padding-top:24px;border-top:1px solid var(--border-strong)}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:24px;color:var(--text-muted);font-size:13px}
.footer-bottom p{margin:0}
.legal-links{display:flex;gap:20px}
.reveal{transition:opacity .55s ease,transform .55s var(--ease)}
.reveal.pending{opacity:0;transform:translateY(16px)}
.reveal.shown{opacity:1;transform:none}
#server-status{position:static;display:block;min-height:56px;overflow:hidden;max-width:100%;margin:24px 0}
#server-status+*{margin-top:24px}
.sprite{position:absolute;width:0;height:0;overflow:hidden}
.prose{overflow-wrap:break-word}
.prose h2{margin-top:56px}
.prose h3{margin-top:32px}
.prose p,.prose li{line-height:1.85}
.prose img{border-radius:var(--r)}
.prose a{color:var(--accent-dark)}
.prose section[id]{scroll-margin-top:var(--anchor-offset)}
.decorated{position:relative;overflow-x:clip}
@media(max-width:1180px){
  .nav{margin-left:24px}
  .nav ul{gap:16px}
  .head-tools{gap:10px}
}
@media(max-width:1080px){
  .nav{display:none}
  .head-tools{margin-left:auto}
  .menu-toggle{display:inline-flex}
  .mobile-drawer:not([hidden]){display:block;position:absolute;left:0;right:0;top:100%;padding:16px var(--gutter) 24px;background:var(--panel);border-bottom:1px solid var(--border-strong);box-shadow:var(--shadow-panel);max-height:calc(100dvh - var(--header-height) - 44px);overflow-y:auto;overscroll-behavior:contain}
  .mobile-drawer a{display:flex;align-items:center;width:100%;min-height:44px;padding:10px 12px;text-decoration:none;border-bottom:1px solid var(--border-soft)}
  .mobile-drawer a[aria-current]{color:var(--accent-dark);font-weight:var(--weight-strong)}
  .drawer-languages{margin-top:16px}
}
@media(max-width:960px){
  .grid-5{grid-template-columns:repeat(3,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
  .footer-brand{grid-column:1/-1}
}
@media(max-width:768px){
  :root{--fs-display:40px;--fs-h2:30px;--fs-h3:22px}
  h1,.h1{font-size:40px;line-height:1.15}
  .section{padding-top:48px;padding-bottom:48px}
  .grid-3{grid-template-columns:minmax(0,1fr)}
  .notice-in{padding-top:8px;padding-bottom:8px}
  .notice-tag{display:none}
  .notice-msg{font-size:12.5px}
  .head-tools{margin-left:auto;gap:8px}
  .lang-control{display:none}
  .login{min-height:44px;padding-inline:16px}
}
@media(max-width:640px){
  :root{--gutter:16px}
  .no-break{white-space:normal}
  .grid-2,.grid-5,.footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-brand{grid-column:auto}
  .panel,.card{padding:20px}
  .tilt,.tilt-card,[data-tilt]{transform:none}
  .decorated{max-width:100%}
  .notice-in{gap:10px}
  .notice-pill{padding-inline:10px;font-size:12px}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal,.reveal.pending{opacity:1;transform:none}
}