/* ============ 1. Reset 与基础变量 ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body,h1,h2,h3,h4,h5,p,ul,ol,figure,blockquote,dl,dd{margin:0}
ul[class],ol[class]{list-style:none;padding:0}
img,svg{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0}
a{color:inherit;text-decoration:none}
:root{
  --cream:#F7F0E3;
  --ink:#1B1416;
  --magenta:#E6007A;
  --magenta-deep:#A8005A;
  --blue:#1E6BFF;
  --blue-deep:#123A8C;
  --gold:#D9A441;
  --warm-white:#FFF9F0;
  --orange:#FF5A3C;
  --teal:#00A896;
  --mauve:#6E5A7A;
  --indigo:#111C3A;
  --line:rgba(27,20,22,.14);
  --line-strong:rgba(27,20,22,.26);
  --on-dark:rgba(255,249,240,.82);
  --on-dark-soft:rgba(255,249,240,.62);
  --max-width:1280px;
  --gutter:clamp(16px,3vw,40px);
  --cut-sm:2px 12px 2px 12px;
  --cut-md:2px 18px 2px 18px;
  --cut-lg:2px 22px 2px 22px;
  --font-sans:"PingFang SC","Noto Sans SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","IBM Plex Mono",Menlo,Consolas,"Courier New",monospace;
  --shadow-card:0 14px 30px -24px rgba(27,20,22,.55);
  --shadow-pop:0 22px 44px -26px rgba(27,20,22,.6);
}
@media (prefers-reduced-motion: no-preference){
  html{scroll-behavior:smooth}
}

/* ============ 2. 中文排版与页面底色 ============ */
body{
  background-color:var(--cream);
  background-image:
    radial-gradient(circle at 6% -4%, rgba(230,0,122,.07), transparent 44%),
    radial-gradient(circle at 98% 4%, rgba(30,107,255,.08), transparent 40%);
  background-repeat:no-repeat;
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-wrap:break-word;
}
h1,h2,h3,h4{font-weight:900;line-height:1.12;letter-spacing:-.02em;text-wrap:balance}
h1{font-size:clamp(34px,5vw,58px)}
h2{font-size:clamp(25px,3.4vw,38px)}
h3{font-size:clamp(20px,2.2vw,25px);line-height:1.24}
h4{font-size:18px;letter-spacing:0}
p{line-height:1.78}
strong{font-weight:800}
::selection{background:rgba(230,0,122,.28);color:var(--ink)}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px;box-shadow:0 0 0 4px rgba(255,249,240,.9)}
#main-content{scroll-margin-top:24px}
#main-content:focus-visible{outline:2px dashed var(--blue);outline-offset:8px}

/* ============ 3. 布局容器与基础网格 ============ */
.container{width:100%;max-width:var(--max-width);margin-inline:auto;padding-inline:var(--gutter)}
.grid{display:grid;gap:clamp(16px,2.2vw,28px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--auto{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.surface-dark{background:var(--indigo);color:var(--on-dark)}
.surface-dark h1,.surface-dark h2,.surface-dark h3{color:var(--warm-white)}

/* ============ 4. 跳过链接与滚动进度 ============ */
.skip-link{
  position:absolute;left:16px;top:-120px;z-index:140;
  display:inline-block;padding:12px 20px;
  background:var(--warm-white);color:var(--ink);
  font-weight:900;font-size:15px;
  border-radius:var(--cut-sm);
  box-shadow:0 10px 30px -8px rgba(0,0,0,.45);
  transition:top .18s ease;
}
.skip-link:focus{top:12px}
.scroll-progress{
  position:fixed;inset:0 0 auto 0;height:3px;width:100%;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--magenta),var(--blue) 48%,var(--gold) 82%,var(--orange));
  z-index:130;pointer-events:none;
}

/* ============ 5. 头部：双层档案横栏 ============ */
.site-header{
  position:relative;z-index:60;
  background:var(--ink);
  color:var(--warm-white);
  box-shadow:0 18px 40px -34px rgba(27,20,22,.9);
}
.header-mark{height:4px;background:linear-gradient(90deg,var(--magenta),var(--blue) 46%,var(--gold) 78%,var(--orange))}
.header-top__inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:18px 28px;flex-wrap:wrap;
  padding-block:16px;
}
.brand{display:flex;align-items:center;gap:14px;min-width:0}
.brand__mark{
  flex:0 0 auto;width:46px;height:46px;display:grid;place-items:center;
  font-family:var(--font-mono);font-weight:700;font-size:18px;letter-spacing:.02em;
  color:var(--ink);
  background:linear-gradient(135deg,var(--gold),var(--magenta) 78%);
  border-radius:var(--cut-md);
  box-shadow:inset 0 0 0 2px rgba(27,20,22,.18);
}
.brand__text{display:block;min-width:0}
.brand__name{display:block;font-size:22px;font-weight:900;letter-spacing:-.01em;line-height:1.2}
.brand__tagline{display:block;margin-top:2px;font-size:12.5px;line-height:1.5;color:var(--on-dark-soft);letter-spacing:.02em}
.header-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;justify-content:flex-end}
.status-pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;
  font-size:12.5px;font-weight:600;line-height:1.4;
  color:#8FEDE1;
  background:rgba(0,168,150,.16);
  border:1px solid rgba(0,168,150,.5);
  border-radius:999px;
}
.status-pill__dot{
  flex:0 0 auto;width:7px;height:7px;border-radius:50%;
  background:var(--teal);
  box-shadow:0 0 0 3px rgba(0,168,150,.24);
}
.header-nav-bar{background:var(--indigo);border-top:1px solid rgba(255,249,240,.1)}
.header-nav-bar__inner{display:flex;align-items:center;gap:16px;padding-block:0}
.site-nav{flex:1 1 auto;min-width:0}
.site-nav__list{display:flex;flex-wrap:wrap;gap:2px;list-style:none;padding:0;margin:0}
.site-nav__item{min-width:0}
.site-nav__link{
  position:relative;display:flex;align-items:center;gap:8px;
  padding:15px 14px;
  font-size:15px;font-weight:700;line-height:1.3;
  color:var(--on-dark);
  border-bottom:3px solid transparent;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.site-nav__link:hover{background:rgba(255,249,240,.08);color:var(--warm-white);border-bottom-color:rgba(230,0,122,.6)}
.site-nav__index{font-family:var(--font-mono);font-size:11px;font-weight:700;letter-spacing:.08em;color:var(--gold)}
.site-nav__link--accent{color:var(--gold)}
.site-nav__link--accent:hover{color:var(--warm-white);background:rgba(217,164,65,.16);border-bottom-color:var(--gold)}
.site-nav__link[aria-current="page"]{
  color:var(--warm-white);
  background:rgba(230,0,122,.2);
  border-bottom-color:var(--magenta);
}
.site-nav__link[aria-current="page"] .site-nav__index{color:var(--warm-white)}

/* 移动抽屉按钮 */
.nav-toggle{
  display:none;align-items:center;gap:10px;
  padding:10px 14px;
  font-size:13px;font-weight:800;letter-spacing:.06em;
  color:var(--warm-white);
  background:rgba(255,249,240,.06);
  border:1px solid rgba(255,249,240,.3);
  border-radius:var(--cut-sm);
  cursor:pointer;
  transition:background-color .18s ease,border-color .18s ease;
}
.nav-toggle:hover{background:rgba(230,0,122,.2);border-color:rgba(230,0,122,.7)}
.nav-toggle__lines{position:relative;display:block;width:18px;height:2px;background:currentColor;transition:background-color .18s ease}
.nav-toggle__lines::before,.nav-toggle__lines::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;
  transition:transform .18s ease;
}
.nav-toggle__lines::before{top:-6px}
.nav-toggle__lines::after{top:6px}
.nav-toggle[aria-expanded="true"] .nav-toggle__lines{background:transparent}
.nav-toggle[aria-expanded="true"] .nav-toggle__lines::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__lines::after{transform:translateY(-6px) rotate(-45deg)}
.nav-toggle__label{white-space:nowrap}

/* ============ 6. 通用按钮 / 标签 / 色带 / 文字组件 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  padding:13px 22px;
  font-family:inherit;font-size:15px;font-weight:800;line-height:1.15;letter-spacing:.01em;
  border:2px solid transparent;
  border-radius:var(--cut-sm);
  cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn--primary{
  background:var(--magenta);color:var(--warm-white);
  box-shadow:0 12px 26px -16px rgba(230,0,122,.95),inset 0 0 0 1px rgba(255,249,240,.22);
}
.btn--primary:hover{background:#FF1A8C;transform:translateY(-2px);box-shadow:0 18px 32px -16px rgba(230,0,122,1)}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--line-strong)}
.btn--ghost:hover{background:var(--ink);color:var(--warm-white);border-color:var(--ink);transform:translateY(-2px)}
.btn--gold{background:var(--gold);color:var(--ink);box-shadow:inset 0 0 0 1px rgba(27,20,22,.16)}
.btn--gold:hover{background:#EFB955;transform:translateY(-2px)}
.btn--sm{font-size:13.5px;padding:10px 16px}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 10px;
  font-family:var(--font-mono);font-size:11.5px;font-weight:700;letter-spacing:.08em;line-height:1.4;
  text-transform:uppercase;
  color:#4A3A55;background:rgba(110,90,122,.16);
  border-radius:2px 8px 2px 8px;
}
.tag--magenta{color:var(--magenta-deep);background:rgba(230,0,122,.14)}
.tag--blue{color:var(--blue-deep);background:rgba(30,107,255,.16)}
.tag--gold{color:#6B4A08;background:rgba(217,164,65,.26)}
.tag--teal{color:#005D54;background:rgba(0,168,150,.2)}
.tag--ink{color:var(--warm-white);background:var(--ink)}
.eyebrow{
  display:flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:12px;font-weight:700;letter-spacing:.18em;
  text-transform:uppercase;color:var(--magenta);
}
.eyebrow::before{content:"";width:10px;height:10px;background:currentColor;border-radius:1px 5px 1px 5px;flex:0 0 auto}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.index-num{
  display:block;
  font-family:var(--font-mono);font-weight:700;
  font-size:clamp(40px,6vw,72px);line-height:.88;letter-spacing:-.02em;
  color:rgba(27,20,22,.28);
  -webkit-text-stroke:1.5px rgba(27,20,22,.2);
}
.section-band{height:10px;border-radius:1px;background:linear-gradient(90deg,var(--magenta),var(--orange))}
.section-band--blue{background:linear-gradient(90deg,var(--blue),var(--teal))}
.section-band--gold{background:linear-gradient(90deg,var(--gold),var(--orange))}
.section-band--ink{background:linear-gradient(90deg,var(--ink),var(--indigo))}

/* ============ 7. 卡片 / 面包屑 / 正文容器 / 图片容器 ============ */
.card{
  position:relative;
  display:block;
  padding:clamp(18px,2.4vw,26px);
  background:var(--warm-white);
  border:1px solid var(--line);
  border-radius:var(--cut-md);
  box-shadow:var(--shadow-card);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.card:hover{transform:translateY(-3px);border-color:rgba(230,0,122,.45);box-shadow:var(--shadow-pop)}
.card__title{font-size:clamp(18px,2vw,22px);font-weight:900;line-height:1.24;letter-spacing:-.01em}
.card__meta{margin-top:8px;font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--mauve)}

.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  margin:0 0 clamp(18px,2.5vw,28px);padding:0;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.04em;
  color:var(--mauve);
  list-style:none;
}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li + li::before{content:"/";color:rgba(27,20,22,.3)}
.breadcrumb a{color:var(--mauve);border-bottom:1px solid transparent;transition:color .18s ease,border-color .18s ease}
.breadcrumb a:hover{color:var(--magenta);border-bottom-color:currentColor}
.breadcrumb [aria-current="page"]{color:var(--ink);font-weight:700}

.prose{max-width:68ch;font-size:17px;line-height:1.78;color:#2B2224}
.prose > * + *{margin-top:1em}
.prose h2{margin-top:1.8em;font-size:clamp(24px,3vw,32px)}
.prose h3{margin-top:1.6em}
.prose ul,.prose ol{padding-left:1.3em;list-style:disc}
.prose ol{list-style:decimal}
.prose li + li{margin-top:.4em}
.prose a{color:var(--blue-deep);border-bottom:2px solid rgba(30,107,255,.34);transition:color .18s ease,border-color .18s ease}
.prose a:hover{color:var(--magenta);border-bottom-color:var(--magenta)}
.prose blockquote{
  padding:14px 18px;border-left:4px solid var(--magenta);
  background:rgba(230,0,122,.07);font-weight:600;color:#3A2B31;
}
.prose code{font-family:var(--font-mono);font-size:.92em;background:rgba(27,20,22,.08);padding:2px 6px;border-radius:2px 6px 2px 6px}

.media{
  position:relative;display:block;overflow:hidden;
  aspect-ratio:16/10;
  border-radius:var(--cut-lg);
  background:
    radial-gradient(120% 120% at 10% 0%, rgba(230,0,122,.5), transparent 56%),
    radial-gradient(120% 120% at 100% 100%, rgba(30,107,255,.5), transparent 58%),
    linear-gradient(160deg,var(--ink),var(--indigo));
  box-shadow:inset 0 0 0 1px rgba(255,249,240,.14);
}
.media img{display:block;width:100%;height:100%;object-fit:cover}
.media--wide{aspect-ratio:21/9}
.media--tall{aspect-ratio:3/4}
.media--square{aspect-ratio:1/1}
.media__caption{display:block;margin-top:10px;font-size:13px;line-height:1.6;color:var(--mauve)}

/* ============ 8. 固定客服入口 ============ */
.service-dock{
  position:fixed;right:clamp(12px,2vw,24px);bottom:clamp(12px,2vw,24px);
  z-index:120;
  display:flex;flex-direction:column;align-items:flex-end;gap:10px;
  max-width:min(330px,calc(100vw - 24px));
}
.service-dock__panel{
  display:none;
  width:100%;
  padding:16px 18px;
  background:var(--warm-white);
  color:var(--ink);
  border:1px solid var(--line);
  border-radius:var(--cut-md);
  box-shadow:0 24px 50px -24px rgba(27,20,22,.6);
}
.service-dock[data-open="true"] .service-dock__panel{display:block}
.service-dock__title{
  margin-bottom:10px;padding-bottom:8px;
  font-size:14px;font-weight:900;letter-spacing:.04em;
  color:var(--ink);
  border-bottom:2px solid var(--magenta);
}
.service-dock__row{display:flex;gap:10px;margin:0 0 6px;font-size:13px;line-height:1.55}
.service-dock__label{
  flex:0 0 34px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;
  color:var(--mauve);padding-top:2px;
}
.service-dock__value{color:var(--ink);word-break:break-word}
.service-dock__note{margin-top:10px;font-size:12px;line-height:1.6;color:var(--mauve)}
.service-dock__link{
  display:inline-block;margin-top:10px;
  font-size:13px;font-weight:800;color:var(--magenta-deep);
  border-bottom:2px solid var(--magenta);
  transition:color .18s ease,border-color .18s ease;
}
.service-dock__link:hover{color:var(--blue-deep);border-bottom-color:var(--blue)}
.service-dock__toggle{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 18px;
  font-size:14px;font-weight:900;letter-spacing:.04em;
  color:var(--warm-white);
  background:linear-gradient(120deg,var(--magenta),#B4005F 70%,var(--indigo));
  border-radius:999px;
  box-shadow:0 16px 34px -18px rgba(230,0,122,.95),inset 0 0 0 1px rgba(255,249,240,.28);
  cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease;
}
.service-dock__toggle:hover{transform:translateY(-2px);box-shadow:0 22px 38px -18px rgba(230,0,122,1)}
.service-dock__toggle-icon{font-size:15px;line-height:1;color:var(--gold)}

/* ============ 9. 页脚 ============ */
.site-footer{position:relative;background:var(--indigo);color:var(--on-dark);overflow:hidden}
.footer-glow{height:6px;background:linear-gradient(90deg,var(--blue),var(--magenta) 40%,var(--gold) 76%,var(--teal))}
.footer-shell{
  position:relative;
  padding-block:clamp(40px,6vw,72px) 26px;
  isolation:isolate;
}
.footer-mark{
  position:absolute;right:-.05em;top:-.22em;z-index:0;
  font-family:var(--font-mono);font-weight:700;letter-spacing:-.04em;line-height:1;
  font-size:clamp(120px,22vw,260px);
  color:rgba(255,249,240,.05);
  pointer-events:none;user-select:none;
}
.footer-top{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.05fr 1.15fr .95fr;
  gap:clamp(24px,4vw,56px);
}
.footer-brand__name{font-size:clamp(24px,3vw,32px);font-weight:900;line-height:1.2;color:var(--warm-white);letter-spacing:-.01em}
.footer-brand__line{margin-top:6px;font-size:14px;font-weight:700;letter-spacing:.03em;color:var(--gold)}
.footer-brand__summary{margin-top:14px;max-width:34ch;font-size:14.5px;line-height:1.72;color:var(--on-dark-soft)}
.footer-cols{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(18px,3vw,32px)}
.footer-col__title{
  margin-bottom:14px;
  font-family:var(--font-mono);font-size:11.5px;font-weight:700;
  letter-spacing:.16em;text-transform:uppercase;color:var(--gold);
}
.footer-col__list{display:flex;flex-direction:column;gap:2px;list-style:none;padding:0;margin:0}
.footer-col__link{
  display:inline-block;padding:5px 0;
  font-size:14.5px;line-height:1.6;color:var(--on-dark);
  border-bottom:1px solid transparent;
  transition:color .18s ease,border-color .18s ease;
}
.footer-col__link:hover{color:var(--warm-white);border-bottom-color:var(--magenta)}
.footer-contact__title{
  margin-bottom:14px;
  font-family:var(--font-mono);font-size:11.5px;font-weight:700;
  letter-spacing:.16em;text-transform:uppercase;color:var(--gold);
}
.footer-contact__item{display:flex;flex-direction:column;gap:2px;margin-bottom:12px;font-size:14px;line-height:1.6}
.footer-contact__label{font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;color:var(--teal)}
.footer-contact__value{color:rgba(255,249,240,.88);word-break:break-word}
.footer-note{
  margin-top:14px;padding-left:12px;
  font-size:12.5px;line-height:1.66;color:var(--on-dark-soft);
  border-left:3px solid var(--magenta);
}
.footer-bottom{
  position:relative;z-index:1;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 24px;
  margin-top:clamp(28px,4vw,48px);padding-top:20px;
  border-top:1px solid rgba(255,249,240,.16);
  font-size:13px;color:var(--on-dark-soft);
}
.footer-legal{font-family:var(--font-mono);font-size:12.5px;letter-spacing:.04em}
.footer-icp{font-family:var(--font-mono);font-size:12.5px;letter-spacing:.04em}

/* ============ 10. 显现状态（JS 协议） ============ */
[data-reveal-on] [data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .5s ease,transform .5s cubic-bezier(.2,.7,.2,1)}
[data-reveal-on] [data-reveal].is-visible{opacity:1;transform:none}

/* ============ 11. 响应式：平板 ============ */
@media (max-width:1024px){
  .site-nav{display:none;flex:1 0 100%;margin-top:10px;padding-top:6px;border-top:1px solid rgba(255,249,240,.14)}
  .site-header[data-open="true"] .site-nav{display:block}
  .header-nav-bar__inner{flex-wrap:wrap;padding-block:12px;row-gap:0}
  .nav-toggle{display:inline-flex}
  .site-nav__list{flex-direction:column;gap:0}
  .site-nav__item{width:100%}
  .site-nav__link{
    justify-content:flex-start;gap:10px;
    padding:13px 8px;
    border-bottom:1px solid rgba(255,249,240,.1);
    border-left:3px solid transparent;
  }
  .site-nav__link:hover{border-bottom-color:rgba(255,249,240,.14);border-left-color:rgba(230,0,122,.6)}
  .site-nav__link[aria-current="page"]{
    border-bottom-color:rgba(255,249,240,.14);
    border-left-color:var(--magenta);
    background:rgba(230,0,122,.18);
  }
  .footer-top{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1 / -1}
  .footer-contact{grid-column:1 / -1}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
}

/* ============ 12. 响应式：手机 ============ */
@media (max-width:760px){
  body{font-size:16px}
  .header-top__inner{padding-block:14px;gap:14px}
  .header-meta{width:100%;justify-content:flex-start}
  .status-pill{font-size:12px;padding:7px 12px}
  .header-cta{width:100%}
  .brand__name{font-size:20px}
  .brand__mark{width:42px;height:42px;font-size:16px}
  .grid--2,.grid--3,.grid--auto{grid-template-columns:1fr}
  .footer-cols{grid-template-columns:1fr 1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .footer-mark{font-size:clamp(96px,34vw,180px);top:-.12em}
  .service-dock{max-width:calc(100vw - 20px)}
  .service-dock__toggle{font-size:13px;padding:11px 16px}
}
@media (max-width:420px){
  .footer-cols{grid-template-columns:1fr}
}

/* ============ 13. 降低动效 ============ */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .card:hover,.btn:hover,.btn--primary:hover,.btn--ghost:hover,.btn--gold:hover,
  .service-dock__toggle:hover{transform:none}
  [data-reveal-on] [data-reveal]{opacity:1;transform:none}
  .media img{transform:none !important}
}