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

:root{
  --ink:#061826;
  --ink-deep:#04101a;
  --ink-soft:#0B2A45;
  --gold:#D9A441;
  --gold-bright:#F3C969;
  --violet:#7A5CFF;
  --orange:#FF7A3D;
  --ice:#F6F2E8;
  --mist:#C9D5E3;
  --sand:#E9DFCB;
  --teal:#2FB8A6;
  --line:rgba(217,164,65,.26);
  --line-soft:rgba(201,213,227,.16);
  --font-display:"Noto Serif SC","Songti SC","STSong",Georgia,"Times New Roman",serif;
  --font-sans:"HarmonyOS Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Barlow Condensed","Oswald","Arial Narrow",var(--font-sans);
  --shell:1180px;
  --radius-xl:34px;
  --radius-lg:24px;
  --radius-md:16px;
  --pill:999px;
  --header-h:74px;
  --rail-w:138px;
  --gap:clamp(16px,2.4vw,32px);
}

body{
  min-height:100vh;
  background:
    radial-gradient(125% 72% at 88% -12%, rgba(122,92,255,.20), transparent 62%),
    radial-gradient(95% 62% at -4% 2%, rgba(217,164,65,.13), transparent 58%),
    var(--ink);
  background-attachment:fixed;
  color:var(--ice);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.75;
  letter-spacing:.01em;
  padding-top:calc(var(--header-h) + 34px);
}

h1,h2{
  font-family:var(--font-display);
  font-weight:900;
  line-height:1.14;
  letter-spacing:.01em;
  color:var(--ice);
}
h1{font-size:clamp(2.125rem,4.6vw,4.2rem);}
h2{font-size:clamp(1.75rem,3vw,2.6rem);}
h3{
  font-family:var(--font-sans);
  font-weight:800;
  font-size:clamp(1.2rem,1.7vw,1.5rem);
  line-height:1.35;
  letter-spacing:.01em;
}
p{max-width:70ch;}
strong{color:var(--gold-bright);font-weight:800;}

:focus-visible{outline:2px solid var(--gold-bright);outline-offset:3px;border-radius:6px;}
#main-content{display:block;scroll-margin-top:calc(var(--header-h) + 40px);}

.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

/* ---------- 跳过链接 ---------- */
.skip-link{
  position:fixed;left:50%;top:10px;z-index:200;
  transform:translate(-50%,-180%);
  padding:12px 24px;border-radius:var(--pill);
  background:linear-gradient(120deg,var(--gold),var(--gold-bright));
  color:var(--ink);font-weight:800;font-size:14px;text-decoration:none;
  pointer-events:auto;
  transition:transform .24s ease;
}
.skip-link:focus,.skip-link:focus-visible{transform:translate(-50%,0);}

/* ---------- 头部外壳 ---------- */
.site-header{
  position:fixed;inset:0 0 auto 0;z-index:90;
  padding:14px clamp(12px,2.6vw,30px) 0;
  pointer-events:none;
}
.header-shell{
  position:relative;max-width:var(--shell);margin:0 auto;
  pointer-events:none;
}
.header-bar{
  position:relative;pointer-events:auto;
  display:flex;align-items:center;gap:clamp(10px,1.6vw,22px);
  min-height:var(--header-h);
  padding:8px clamp(10px,1.4vw,18px) 8px clamp(14px,1.6vw,20px);
  background:linear-gradient(120deg,rgba(11,42,69,.94),rgba(6,24,38,.88));
  border:1px solid var(--line);
  border-radius:var(--pill);
  backdrop-filter:blur(16px) saturate(140%);
  box-shadow:0 18px 46px -26px rgba(0,0,0,.92),inset 0 1px 0 rgba(246,242,232,.06);
}
.header-bar__progress{
  position:absolute;left:24px;right:24px;bottom:4px;height:2px;
  border-radius:2px;transform-origin:left center;
  transform:scaleX(var(--progress,0));
  background:linear-gradient(90deg,var(--gold),var(--violet) 56%,var(--orange));
  opacity:.9;
  transition:transform .12s linear;
}

/* ---------- 品牌 ---------- */
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;flex:0 0 auto;}
.brand__glyph{
  display:grid;place-items:center;width:42px;height:42px;flex:0 0 auto;
  border-radius:14px;
  background:linear-gradient(150deg,var(--gold-bright),var(--gold) 52%,var(--violet));
  color:#0a1c2b;font-family:var(--font-display);font-weight:900;font-size:22px;line-height:1;
  transform:rotate(-4deg);
  box-shadow:inset 0 0 0 1px rgba(6,24,38,.42);
}
.brand__text{display:flex;flex-direction:column;gap:2px;}
.brand__name{font-size:17px;font-weight:800;letter-spacing:.06em;color:var(--ice);line-height:1.2;}
.brand__sub{font-size:10.5px;letter-spacing:.2em;color:var(--gold);line-height:1.2;}

/* ---------- 主导航 ---------- */
.primary-nav{flex:1 1 auto;display:flex;justify-content:center;min-width:0;pointer-events:auto;}
.primary-nav__list{display:flex;align-items:center;gap:2px;flex-wrap:wrap;}
.primary-nav__item{display:block;}
.primary-nav__link{
  position:relative;display:inline-block;
  padding:9px 14px;border-radius:var(--pill);
  font-size:14px;font-weight:600;color:var(--mist);text-decoration:none;white-space:nowrap;
  border:1px solid transparent;
  transition:color .2s ease,background .2s ease,border-color .2s ease;
}
.primary-nav__link:hover{color:var(--ice);background:rgba(201,213,227,.09);}
.primary-nav__link[aria-current="page"]{
  color:var(--gold-bright);
  background:linear-gradient(120deg,rgba(122,92,255,.24),rgba(217,164,65,.16));
  border-color:var(--line);
  box-shadow:inset 0 0 0 1px rgba(243,201,105,.18);
}
.primary-nav__link[aria-current="page"]::before{
  content:"";position:absolute;left:5px;top:50%;width:4px;height:4px;border-radius:50%;
  background:var(--violet);transform:translateY(-50%);
  box-shadow:0 0 0 3px rgba(122,92,255,.24);
}
.primary-nav__item--cta{display:none;}

/* ---------- 快捷行动 ---------- */
.header-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border-radius:var(--pill);
  font-family:var(--font-sans);font-size:14px;font-weight:700;letter-spacing:.02em;
  text-decoration:none;cursor:pointer;border:1px solid transparent;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.btn--accent{
  background:linear-gradient(120deg,var(--orange),#ffb066);
  color:#0a1c2b;
  box-shadow:0 10px 24px -18px rgba(255,122,61,.95);
}
.btn--accent:hover{transform:translateY(-2px);box-shadow:0 16px 30px -16px rgba(255,122,61,.85);}
.btn--ghost{
  color:var(--ice);border-color:var(--line);background:rgba(246,242,232,.04);
}
.btn--ghost:hover{color:var(--gold-bright);border-color:var(--gold-bright);background:rgba(217,164,65,.1);transform:translateY(-2px);}
.btn--gold{
  background:linear-gradient(120deg,var(--gold),var(--gold-bright));color:#0a1c2b;
}
.btn--gold:hover{transform:translateY(-2px);box-shadow:0 14px 28px -18px rgba(243,201,105,.9);}
.btn--quiet{color:var(--gold);padding:8px 10px;background:none;border-color:transparent;}
.btn--quiet:hover{color:var(--gold-bright);}

/* ---------- 移动菜单按钮 ---------- */
.nav-toggle{
  display:none;position:relative;width:46px;height:46px;flex:0 0 auto;
  border-radius:14px;border:1px solid var(--line);
  background:rgba(122,92,255,.16);cursor:pointer;
  transition:background .2s ease,border-color .2s ease;
}
.nav-toggle:hover{background:rgba(122,92,255,.28);border-color:var(--gold);}
.nav-toggle__bar{
  position:absolute;left:13px;right:13px;height:2px;border-radius:2px;
  background:var(--gold-bright);
  transition:transform .24s ease,opacity .2s ease;
}
.nav-toggle__bar:nth-child(1){top:16px;}
.nav-toggle__bar:nth-child(2){top:22px;}
.nav-toggle__bar:nth-child(3){top:28px;}
.site-header[data-open] .nav-toggle__bar:nth-child(1){transform:translateY(6px) rotate(45deg);}
.site-header[data-open] .nav-toggle__bar:nth-child(2){opacity:0;}
.site-header[data-open] .nav-toggle__bar:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ---------- 左侧刻度轨道 ---------- */
.rail{display:none;}
.rail__list{display:flex;flex-direction:column;gap:2px;}
.rail__item{display:block;}
.rail__link{
  display:flex;align-items:baseline;gap:9px;
  padding:10px 12px;border-radius:12px;
  border-left:2px solid transparent;
  color:var(--mist);text-decoration:none;font-size:13px;letter-spacing:.02em;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.rail__num{font-family:var(--font-num);font-size:15px;font-weight:700;letter-spacing:.08em;color:var(--gold);}
.rail__text{font-size:13px;line-height:1.3;}
.rail__link:hover{background:rgba(201,213,227,.08);color:var(--ice);}
.rail__link[aria-current="page"]{
  color:var(--gold-bright);background:rgba(122,92,255,.18);border-left-color:var(--gold);
}
.rail__link[aria-current="page"] .rail__num{color:var(--gold-bright);}

@media (min-width:1280px){
  body{padding-left:var(--rail-w);}
  .rail{
    display:block;position:fixed;left:0;top:50%;transform:translateY(-50%);
    width:var(--rail-w);z-index:80;padding:22px 10px;
    background:linear-gradient(180deg,rgba(11,42,69,.92),rgba(4,16,26,.78));
    border-right:1px solid var(--line);
    border-radius:0 28px 28px 0;
    backdrop-filter:blur(10px);
    pointer-events:auto;
  }
  .rail::before{
    content:"";position:absolute;left:0;top:26px;bottom:26px;width:3px;border-radius:3px;
    background:repeating-linear-gradient(180deg,var(--gold) 0 12px,transparent 12px 24px);
    opacity:.55;
  }
}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(56px,8vw,110px);
  background:linear-gradient(180deg,rgba(11,42,69,.96),var(--ink-deep) 74%);
  border-top:1px solid var(--line);
  color:var(--ice);
}
.footer-flagline{
  height:4px;
  background:repeating-linear-gradient(90deg,var(--gold) 0 46px,var(--violet) 46px 92px,var(--orange) 92px 138px,var(--teal) 138px 184px);
  opacity:.6;
}
.footer-shell{
  max-width:var(--shell);margin-inline:auto;
  padding:clamp(38px,5vw,66px) clamp(16px,3vw,32px) 28px;
}
.footer-top{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.5fr);
  gap:clamp(26px,4vw,60px);
}
.footer-brand__mark{margin-bottom:18px;}
.footer-brand__line{
  font-family:var(--font-display);font-size:clamp(1.05rem,1.5vw,1.3rem);
  font-weight:700;line-height:1.5;color:var(--gold-bright);max-width:22ch;
}
.footer-brand__note{margin-top:12px;font-size:13.5px;color:var(--mist);max-width:30ch;}
.footer-cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(18px,3vw,34px);}
.footer-col__title{
  font-family:var(--font-sans);font-size:12px;font-weight:800;
  letter-spacing:.22em;color:var(--gold);text-transform:none;margin-bottom:16px;
}
.footer-col__list{display:flex;flex-direction:column;gap:10px;}
.footer-col__link{
  display:inline-block;font-size:14.5px;color:var(--mist);text-decoration:none;
  transition:color .2s ease,transform .2s ease;
}
.footer-col__link:hover{color:var(--gold-bright);transform:translateX(4px);}

.footer-contact{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(208px,1fr));
  gap:12px;
  margin-top:clamp(28px,4vw,44px);padding-top:clamp(24px,3.4vw,36px);
  border-top:1px solid var(--line-soft);
}
.footer-contact__item{
  display:flex;flex-direction:column;gap:4px;
  padding:14px 18px;border-radius:var(--radius-md);
  background:rgba(6,24,38,.55);border:1px solid var(--line-soft);
}
.footer-contact__label{font-size:11px;letter-spacing:.22em;color:var(--gold);}
.footer-contact__value{
  font-size:14.5px;color:var(--ice);font-style:normal;word-break:break-all;line-height:1.5;
}
.copy-btn{
  display:inline-flex;align-items:center;gap:6px;align-self:flex-start;
  margin-top:6px;padding:6px 14px;border-radius:var(--pill);
  border:1px solid var(--line);color:var(--gold);
  font-size:12px;letter-spacing:.08em;font-weight:700;cursor:pointer;
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.copy-btn:hover{color:var(--gold-bright);border-color:var(--gold-bright);background:rgba(217,164,65,.1);}
.copy-btn.is-copied{color:var(--teal);border-color:rgba(47,184,166,.62);background:rgba(47,184,166,.14);}

.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:14px 26px;
  margin-top:clamp(26px,4vw,44px);padding-top:20px;
  border-top:1px solid var(--line-soft);
  font-size:13px;color:var(--mist);
}
.footer-legal{font-family:var(--font-num);letter-spacing:.1em;font-size:13px;color:var(--mist);}
.footer-legal-links{display:flex;flex-wrap:wrap;gap:18px;}
.footer-legal-links a{color:var(--mist);text-decoration:none;transition:color .2s ease;}
.footer-legal-links a:hover{color:var(--gold-bright);}
.footer-copy{color:var(--mist);font-size:13px;}

/* ---------- 通用页面容器与文字 ---------- */
.container{
  width:100%;max-width:var(--shell);margin-inline:auto;
  padding-inline:clamp(16px,3vw,32px);
}
.prose{max-width:68ch;color:var(--mist);}
.prose p+p{margin-top:1em;}
.prose a{color:var(--gold-bright);text-decoration:none;border-bottom:1px solid rgba(243,201,105,.4);}
.prose a:hover{border-bottom-color:var(--gold-bright);}
.lead{font-size:clamp(1.05rem,1.4vw,1.25rem);line-height:1.7;color:var(--mist);max-width:60ch;}

.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.24em;color:var(--gold);font-weight:700;
}
.eyebrow::before{
  content:"";width:26px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--gold),var(--violet));
}
.section-num{
  display:inline-block;font-family:var(--font-num);font-size:15px;
  font-weight:700;letter-spacing:.2em;color:var(--gold);
}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:var(--pill);
  font-size:12px;font-weight:700;letter-spacing:.1em;
  color:var(--gold-bright);background:rgba(217,164,65,.09);
  border:1px solid var(--line);
}
.tag--violet{color:#cfc6ff;background:rgba(122,92,255,.18);border-color:rgba(122,92,255,.52);}
.tag--teal{color:#9fe8dd;background:rgba(47,184,166,.16);border-color:rgba(47,184,166,.5);}

.breadcrumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.04em;color:var(--mist);
}
.breadcrumbs a{color:var(--mist);text-decoration:none;border-bottom:1px solid transparent;transition:color .2s,border-color .2s;}
.breadcrumbs a:hover{color:var(--gold-bright);border-bottom-color:var(--gold);}
.breadcrumbs__sep{color:var(--gold);opacity:.7;}

.tick-rule{
  height:1px;border:0;margin:0;
  background:repeating-linear-gradient(90deg,var(--line) 0 18px,transparent 18px 26px);
}

.grid{display:grid;gap:var(--gap);}
.grid--split{grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);}
.grid--halves{grid-template-columns:repeat(2,minmax(0,1fr));}

/* ---------- 图片容器基础 ---------- */
.media-frame{
  position:relative;overflow:hidden;
  border-radius:var(--radius-lg);
  border:1px solid var(--line-soft);
  background:linear-gradient(150deg,var(--ink-soft),var(--ink) 56%,#10233a);
  aspect-ratio:16/10;
}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(58% 58% at 78% 16%,rgba(217,164,65,.28),transparent 70%),
    radial-gradient(52% 52% at 10% 88%,rgba(122,92,255,.3),transparent 72%);
}
.media-frame 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;}

/* ---------- 标签页 ---------- */
.tabs{display:block;}
.tabs__list{
  display:flex;flex-wrap:wrap;gap:6px;width:max-content;max-width:100%;
  padding:6px;border-radius:var(--pill);
  background:rgba(11,42,69,.7);border:1px solid var(--line-soft);
}
.tabs__btn{
  padding:9px 18px;border-radius:var(--pill);
  font-size:14px;font-weight:700;color:var(--mist);cursor:pointer;
  border:1px solid transparent;
  transition:color .22s ease,background .22s ease,border-color .22s ease;
}
.tabs__btn:hover{color:var(--ice);background:rgba(201,213,227,.08);}
.tabs__btn[aria-selected="true"]{
  color:var(--gold-bright);
  background:linear-gradient(120deg,rgba(217,164,65,.26),rgba(122,92,255,.3));
  border-color:var(--line);
}
.tabs__panel{padding-top:22px;}
.tabs__panel[hidden]{display:none;}

/* ---------- 显现 ---------- */
[data-reveal]{
  opacity:0;transform:translateY(18px);
  transition:opacity .65s ease,transform .65s cubic-bezier(.22,.61,.36,1);
}
[data-reveal].is-visible{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .nav-toggle{display:block;}
  .header-actions{display:none;}
  .primary-nav{
    position:absolute;left:0;right:0;top:calc(100% + 10px);
    flex-direction:column;align-items:stretch;justify-content:flex-start;
    padding:12px;
    background:linear-gradient(160deg,rgba(11,42,69,.98),rgba(4,16,26,.98));
    border:1px solid var(--line);border-radius:26px;
    box-shadow:0 34px 64px -30px rgba(0,0,0,.95);
    opacity:0;visibility:hidden;transform:translateY(-10px);pointer-events:none;
    transition:opacity .24s ease,transform .24s ease,visibility .24s;
  }
  .site-header[data-open] .primary-nav{
    opacity:1;visibility:visible;transform:none;pointer-events:auto;
  }
  .primary-nav__list{flex-direction:column;align-items:stretch;gap:4px;}
  .primary-nav__link{display:block;padding:13px 16px;font-size:15px;}
  .primary-nav__item--cta{display:block;margin-top:6px;}
  .primary-nav__item--cta .btn{width:100%;}
  .grid--split,.grid--halves{grid-template-columns:1fr;}
  .footer-top{grid-template-columns:1fr;}
}

@media (max-width:760px){
  body{font-size:16px;padding-top:calc(var(--header-h) + 26px);}
  .header-bar{gap:8px;min-height:66px;padding:8px 8px 8px 12px;}
  .brand__glyph{width:36px;height:36px;font-size:19px;border-radius:12px;}
  .brand__name{font-size:15px;}
  .brand__sub{font-size:9.5px;letter-spacing:.16em;}
  .header-bar__progress{left:16px;right:16px;}
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

@media (max-width:520px){
  .brand__sub{display:none;}
  .footer-cols{grid-template-columns:1fr;gap:22px;}
  .tabs__list{width:100%;}
  .tabs__btn{flex:1 1 auto;text-align:center;}
}

@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 !important;transform:none !important;}
  .header-bar__progress{transition:none !important;}
}