/* 从用户提供的官网提取：导航、页脚、字体及公共组件。 */
@font-face{font-family:HddSans;src:url("../fonts/common-905c88fd76.woff2") format('woff2');font-weight:400;font-display:swap;unicode-range:U+53A8,U+623F,U+62A2}
@font-face{font-family:HddSans;src:url("../fonts/common-f3cc50bd57.woff2") format('woff2');font-weight:600;font-display:swap;unicode-range:U+53A8,U+623F,U+62A2}
@font-face{font-family:HddSans;src:url("../fonts/common-e0b26f844c.woff2") format('woff2');font-weight:100 900;font-display:swap}
:root{--blue:#4f7bff;--ink:#333;--muted:#777;--tint:#f8f9ff;--orange:linear-gradient(105deg,#ff8710,#ff9d37);--soft-shadow:0 4px 12px #23345009;--radius:10px}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:65px}
body{margin:0;color:var(--ink);font-family:HddSans,'Noto Sans SC','Microsoft YaHei',sans-serif;font-size:14px;-webkit-font-smoothing:antialiased}
button,a{-webkit-tap-highlight-color:transparent}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none;padding:0}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
h1,h2,h3,h4,p{margin:0}
button:focus-visible,a:focus-visible{outline:3px solid #83a3ff;outline-offset:5px}
button{touch-action:manipulation}
.container{width:960px;max-width:calc(100% - 48px);margin:0 auto}
.orange-button{display:inline-flex;align-items:center;justify-content:center;gap:7px;background:var(--orange);color:#fff;border-radius:3px;height:36px;padding:0 14px;white-space:nowrap;position:relative;transition:transform .25s,box-shadow .25s}
.site-header{height:50px;background:#e4f0fd;position:relative;z-index:20}
.header-inner{height:100%;display:flex;align-items:center}
.brand{width:101px;flex-shrink:0}
.brand img{width:101px;height:34px;object-fit:contain}
.site-header nav{display:flex;align-items:center;gap:40px;margin-left:46px;height:100%;font-size:14px}
.site-header nav>a,.site-header nav>button,.dropdown-toggle{height:100%;display:inline-flex;align-items:center;white-space:nowrap}
.site-header nav .active{color:#2492ff;position:relative}
.site-header nav .active:after{content:'';width:12px;height:2px;position:absolute;bottom:11px;left:calc(50% - 6px);background:#2c94ff}
.site-header nav a:hover,.site-header nav button:hover{color:#3388ff}
.header-actions{display:flex;align-items:center;gap:24px;margin-left:auto}
.login-button{font-size:14px}
.header-actions .orange-button{font-size:12px;height:26px;padding:0 13px}
.nav-dropdown{height:100%;position:relative}
.chevron{width:6px;height:6px;border-right:1px solid;border-bottom:1px solid;transform:rotate(45deg);margin:0 0 4px 7px}
.dropdown-menu{position:absolute;top:46px;left:-20px;min-width:140px;padding:10px;background:white;border-radius:8px;box-shadow:0 10px 30px #243f661c}
.dropdown-menu a{display:block;padding:10px 12px;border-radius:5px}
.dropdown-menu a:hover{background:var(--tint)}
.menu-toggle{display:none}
.site-footer{height:393px;background:#1f2d40 url("../images/common-1d5a0d48cf.svg") center top/1920px 393px no-repeat;color:#fff;padding-top:70px}
.footer-main{display:flex;justify-content:space-between;height:229px}
.footer-logo{width:135px;height:47px;object-fit:contain}
.qr-list{display:flex;gap:16px;margin-top:15px}
.qr-item{width:85px;display:flex;flex-direction:column;gap:8px}
.qr-item img{width:85px;height:85px;border-radius:2px}
.qr-item span{font-size:10px;line-height:18px;width:100%;background:#ffffff24;border-radius:2px;white-space:nowrap}
.qr-item:hover img{outline:2px solid #7ca3ff;outline-offset:3px}
.footer-links{display:flex;justify-content:space-between;width:480px;padding-top:0}
.footer-links h3{font-size:16px;font-weight:500;line-height:24px;margin-bottom:19px;position:relative}
.footer-links h3:after{content:'';display:block;width:16px;height:2px;background:#3094ff;position:absolute;bottom:-8px}
.footer-links :is(button,.footer-external){display:block;margin-top:0;font-size:14px;line-height:22px;margin-bottom:15px;text-align:left;color:#edf1f7}
.footer-links :is(button,.footer-external):hover{color:#86b0ff}
.copyright{height:94px;border-top:1px solid #ffffff22;padding-top:24px;text-align:center;font-size:14px;color:#ecf0f7;white-space:nowrap}
dialog{border:0;border-radius:18px;box-shadow:0 24px 90px #142b553d;width:430px;max-width:calc(100vw - 32px);padding:32px;text-align:center;color:var(--ink);font:inherit}
/* 关闭时显式隐藏，兼容缺少原生 dialog 隐藏样式的浏览器。 */
#info-dialog:not([open]){display:none!important}
dialog::backdrop{background:#182c485e;backdrop-filter:blur(5px)}
.dialog-close{position:absolute;right:16px;top:8px;font-size:30px;color:#888;padding:0 8px}
.dialog-brand{width:101px;margin:0 auto 20px}
dialog h2{font-size:24px;font-weight:500;margin-bottom:12px}
#dialog-description{color:var(--muted);line-height:1.9;font-size:14px}
.dialog-qr{margin:22px auto 0;display:flex;align-items:center;flex-direction:column;gap:10px}
.dialog-qr img{width:170px;height:170px;image-rendering:pixelated}
.dialog-qr span{font-size:13px}
.dialog-note{font-size:12px;color:#999;margin-top:14px}
.dialog-confirm{min-width:110px;margin-top:20px}
body.dialog-open{overflow:hidden}
[hidden]{display:none!important}
@keyframes register-halo{0%,100%{box-shadow:0 0 0 0 #ff962e00}45%{box-shadow:0 0 0 5px #ff962e22}70%{box-shadow:0 0 0 8px #ff962e00}}
@keyframes register-shine{0%,65%{background-position:180% 0}90%,100%{background-position:-80% 0}}
@media(min-width:1921px){
.site-footer{background-size:cover}
}
@media(max-width:1050px){
.container{max-width:calc(100% - 40px)}
.site-header nav{gap:24px;margin-left:32px}
.footer-links{width:46%}
.copyright{font-size:12px}
}
@media(max-width:900px){
.container{max-width:calc(100% - 32px);width:auto}
.site-header{height:60px}
.header-inner{gap:18px}
.menu-toggle{display:flex;flex-direction:column;gap:4px;width:24px;order:3;margin-left:0}
.menu-toggle span{display:block;height:2px;width:20px;background:#4f7bff}
.header-actions{gap:12px}
.site-header nav{display:none;position:absolute;left:0;right:0;top:60px;height:auto;margin:0;padding:15px 24px;background:#eef6ff;box-shadow:0 12px 20px #24426014;flex-direction:column;align-items:stretch;gap:0}
.site-header nav.open{display:flex}
.site-header nav>a,.site-header nav>button,.dropdown-toggle{height:44px}
.site-header nav .active:after{display:none}
.nav-dropdown{height:auto}
.dropdown-menu{position:static;box-shadow:none;margin:0 0 8px;min-width:0}
.site-footer{height:auto;min-height:490px;padding:38px 0 0;background-size:auto 100%;background-color:#1f2d40}
.footer-main{height:auto;display:block}
.footer-logo{width:125px;height:auto}
.qr-list{gap:15px}
.footer-links{width:100%;margin-top:30px;gap:20px}
.footer-links h3{font-size:14px}
.footer-links :is(button,.footer-external){font-size:12px;margin-bottom:10px}
.copyright{height:auto;min-height:85px;white-space:normal;font-size:10px;line-height:20px;margin-top:20px;padding:18px 0}
.copyright span{display:inline-block}
.dialog-brand{margin-bottom:15px}
}
.orange-button{isolation:isolate;overflow:visible;transition:opacity .2s;transform:none;filter:none}
.button-label{position:relative;z-index:2;display:inline-flex;align-items:center;gap:7px}
.orange-button:hover,.orange-button:focus-visible,.orange-button:active{transform:none;filter:none}
.register-attention{box-shadow:0 2px 10px #ff982644}
.button-orbit{position:absolute;inset:-4px;border-radius:inherit;pointer-events:none;mask-image:conic-gradient(from var(--orbit-angle),transparent 0deg,#000 85deg,transparent 100deg,transparent 180deg,#000 265deg,transparent 280deg);animation:orbit-light 2.8s linear infinite;z-index:0}
.button-orbit::before{content:'';position:absolute;inset:4px;border-radius:inherit;box-shadow:0 0 2px 2px #ffedb4,0 0 5px 3px #ffc26b,0 0 9px 5px #ff941a,0 0 15px 5px #ff982666}
.site-footer,.site-footer *{text-shadow:none;filter:none}
:root{--header-height:50px}
body{padding-top:var(--header-height)}
html{scroll-padding-top:calc(var(--header-height) + 15px)}
.site-header{position:fixed;inset:0 0 auto;height:var(--header-height);z-index:100;background:rgba(232,243,255,.72);backdrop-filter:blur(18px) saturate(155%);-webkit-backdrop-filter:blur(18px) saturate(155%);border-bottom:0;box-shadow:0 2px 14px #335f9908}
@media(max-width:900px){
:root{--header-height:60px}
.site-header nav{background:rgba(239,247,255,.96);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);max-height:calc(100dvh - var(--header-height));overflow-y:auto}
}
@media(min-width:1051px){
.container{width:1260px;max-width:calc(100% - 48px);margin-inline:auto}
}
@media(min-width:1200px){
:root{--header-height:57.50px;--radius:11.50px}
body{font-size:16.10px}
.orange-button{height:41.40px;padding:0 16.10px;gap:8.05px;border-radius:3.45px}
.button-label{gap:8.05px}
.brand,.brand img{width:116.15px}
.brand img{height:39.10px}
.site-header nav{gap:46.00px;margin-left:52.90px;font-size:16.10px}
.site-header nav .active:after{width:13.80px;height:2.30px;bottom:12.65px;left:calc(50% - 6.90px)}
.header-actions{gap:27.60px}
.login-button{font-size:16.10px}
.header-actions .orange-button{height:29.90px;padding:0 14.95px;font-size:13.80px}
.chevron{width:6.90px;height:6.90px;margin:0 0 4.60px 8.05px}
.dropdown-menu{top:52.90px;left:-23.00px;min-width:161.00px;padding:11.50px;border-radius:9.20px}
.dropdown-menu a{padding:11.50px 13.80px;border-radius:5.75px}
.site-footer{height:451.95px;padding-top:80.50px;background-size:2208.00px 451.95px}
.footer-main{height:263.35px}
.footer-logo{width:155.25px;height:54.05px}
.qr-list{gap:18.40px;margin-top:17.25px}
.qr-item{width:97.75px;gap:9.20px}
.qr-item img{width:97.75px;height:97.75px;border-radius:2.30px}
.qr-item span{font-size:11.50px;line-height:20.70px;border-radius:2.30px}
.footer-links{width:552.00px;font-size:14.10px}
.footer-links h3{font-size:16.40px;line-height:27.60px;margin-bottom:21.85px}
.footer-links h3:after{width:18.40px;height:2.30px;bottom:-9.20px}
.footer-links :is(button,.footer-external){font-size:14.10px;line-height:25.30px;margin-bottom:17.25px}
.copyright{height:108.10px;padding-top:27.60px;font-size:14.10px}
dialog{width:494.50px;padding:36.80px;border-radius:20.70px}
.dialog-close{right:18.40px;top:9.20px;font-size:34.50px;padding:0 9.20px}
.dialog-brand{width:116.15px;margin:0 auto 23.00px}
dialog h2{font-size:27.60px;margin-bottom:13.80px}
#dialog-description{font-size:16.10px}
.dialog-qr{margin:25.30px auto 0;gap:11.50px}
.dialog-qr img{width:195.50px;height:195.50px}
.dialog-qr span{font-size:14.95px}
.dialog-note{font-size:13.80px;margin-top:16.10px}
.dialog-confirm{min-width:126.50px;margin-top:23.00px}
}
@media(min-width:1921px){
.site-footer{background-size:cover}
}
:root{--header-height:60px}
.site-header nav .active:after{bottom:16px}
.dropdown-menu{top:calc(var(--header-height) - 4px)}
@media(min-width:1200px){
:root{--header-height:67.5px}
.site-header nav .active:after{bottom:17.65px}
}
@media(max-width:900px){
:root{--header-height:70px}
.site-header nav{top:var(--header-height)}
}
.site-header .register-attention{--register-cycle:4.8s;
  background:linear-gradient(110deg,#ff8710 0%,#ff9828 65%,#ffa43f 100%);
  box-shadow:0 3px 9px #ff8a1c38;
  animation:nav-register-invite var(--register-cycle) ease-in-out infinite;}
.site-header .register-attention::before{content:'';position:absolute;inset:0;border-radius:inherit;
  box-shadow:inset 0 1px 0 #ffffff66,inset 0 0 0 1px #ffffff2e;
  pointer-events:none;}
.site-header .register-attention::after{content:'';position:absolute;inset:0;border-radius:inherit;z-index:1;
  background:linear-gradient(115deg,transparent 38%,#ffffff18 44%,#ffffffa6 50%,#ffffff18 56%,transparent 62%) 180% 0/250% 100% no-repeat;
  opacity:0;pointer-events:none;
  animation:nav-register-sheen var(--register-cycle) ease-in-out infinite;}
.site-header .register-attention .button-orbit{inset:-3px;border:1px solid #ffa53a;border-radius:6px;
  mask-image:none;opacity:0;box-shadow:0 0 9px #ffac4c4d;
  animation:nav-register-ripple var(--register-cycle) ease-out infinite;}
.site-header .register-attention .button-orbit::before{content:none}
.site-header .register-attention:is(:hover,:focus-visible),.site-header .register-attention:is(:hover,:focus-visible)::after,.site-header .register-attention:is(:hover,:focus-visible) .button-orbit{animation-play-state:paused;}
.site-header .register-attention:active{animation:none;transform:translateY(1px)}
@keyframes nav-register-invite{
  0%,42%,100%{transform:translateY(0);box-shadow:0 3px 9px #ff8a1c38}
  12%{transform:translateY(-2px);box-shadow:0 6px 16px #ff8a1c70,0 0 0 3px #ffb44e1a}
  25%{transform:translateY(0);box-shadow:0 4px 14px #ff8a1c59}
}
@keyframes nav-register-sheen{
  0%,8%{background-position:180% 0;opacity:0}
  14%{opacity:.85}
  32%{background-position:-80% 0;opacity:.85}
  38%,100%{background-position:-80% 0;opacity:0}
}
@keyframes nav-register-ripple{
  0%,7%{transform:scale(1);opacity:0}
  12%{transform:scale(1);opacity:.75}
  38%,100%{transform:scale(1.15,1.36);opacity:0}
}
@media(prefers-reduced-motion:reduce){
.site-header .register-attention{transform:none!important}
}
.site-header .register-attention{--register-cycle:3.6s}
.site-header .register-attention::after{background-size:200% 100%;background-repeat:repeat-x;opacity:.85;
  animation-timing-function:linear;}
.site-header .register-attention .button-orbit{animation-timing-function:ease-in-out}
@keyframes nav-register-invite{
  0%,100%{transform:translateY(0);box-shadow:0 3px 9px #ff8a1c38}
  50%{transform:translateY(-2px);box-shadow:0 6px 16px #ff8a1c70,0 0 0 3px #ffb44e1a}
}
@keyframes nav-register-sheen{
  from{background-position:100% 0;opacity:.85}
  to{background-position:-100% 0;opacity:.85}
}
@keyframes nav-register-ripple{
  0%,100%{transform:scale(1);opacity:.18}
  50%{transform:scale(1.1,1.24);opacity:.65}
}
@media(prefers-reduced-motion:reduce){
html{scroll-behavior:auto}
*,*:before,*:after{animation:none!important;transition:none!important}
}
body{padding-top:0}
body .site-header{position:absolute;background:transparent;box-shadow:none;
  backdrop-filter:none;-webkit-backdrop-filter:none;
  transition:background-color .2s,box-shadow .2s;}
body .site-header:not(.is-scrolled){background:transparent}
body .site-header.is-scrolled{position:fixed;background:rgba(255,255,255,.94);
  backdrop-filter:blur(18px) saturate(155%);-webkit-backdrop-filter:blur(18px) saturate(155%);
  box-shadow:0 2px 14px #335f990d;}
body #help-page .hc-hero{border-top:var(--header-height) solid transparent;
  background-origin:border-box;}
body #help-page .hc-hero{height:calc(420px + var(--header-height))}
body #help-page{padding-top:var(--header-height)}
body #help-page .hc-hero{margin-top:calc(-1 * var(--header-height))}
@media(max-width:760px){
body #help-page .hc-hero{height:auto;min-height:calc(360px + var(--header-height))}
}
@media(prefers-reduced-motion:reduce){
body .site-header{transition:none}
}
@media(min-width:981px){
body{--inner-hero-height:420px}
body #help-page .hc-hero{height:calc(var(--inner-hero-height) + var(--header-height))}
}
.site-footer{height:auto;min-height:420px;padding-top:66px}
.footer-main{display:grid;grid-template-columns:340px minmax(0,1fr);gap:48px;height:auto;padding-bottom:48px}
.footer-links{width:auto;display:grid;grid-template-columns:1.45fr 1fr 1fr .8fr;gap:26px;margin:0}
.footer-links a,.footer-links .footer-static{display:block;font-size:14px;line-height:1.8;color:#edf1f7;margin:0 0 12px;text-align:left;overflow-wrap:anywhere}
.footer-links a:hover{color:#86b0ff}
.footer-links a:focus-visible{outline:2px solid #86b0ff;outline-offset:5px;border-radius:2px}
.footer-links h3{font-size:16px;white-space:nowrap}
@media(max-width:1100px){
.footer-main{grid-template-columns:290px minmax(0,1fr);gap:30px}
.footer-links{gap:20px}
.footer-links a,.footer-links .footer-static{font-size:13px}
.qr-list{gap:14px}
}
@media(max-width:980px){
.footer-main{grid-template-columns:1fr;gap:36px}
.footer-links{grid-template-columns:1.4fr 1fr 1fr 1fr;width:100%}
.footer-links a,.footer-links .footer-static{font-size:14px}
.site-footer{padding-top:46px}
}
@media(max-width:600px){
.footer-links{grid-template-columns:1.2fr 1fr;gap:30px 26px}
.footer-links h3{font-size:15px}
.footer-links a,.footer-links .footer-static{font-size:13px;margin-bottom:10px}
.footer-main{padding-bottom:24px}
.site-footer{padding-top:38px}
}
.site-footer .footer-links{grid-template-columns:repeat(4,max-content);justify-content:space-between;gap:24px;width:100%;margin:0}
.site-footer .footer-links>div{min-width:0}
.site-footer .footer-links a,.site-footer .footer-links .footer-static{margin:0 0 12px;line-height:1.8}
@media(max-width:1100px) and (min-width:981px){
.site-footer .footer-main{grid-template-columns:270px minmax(0,1fr);gap:32px}
.site-footer .footer-links{gap:18px}
}
@media(max-width:600px){
.site-footer .footer-links{grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:30px 28px}
.site-footer .footer-links a,.site-footer .footer-links .footer-static{margin-bottom:10px}
}
body main h2,body main h2 :is(strong,b){font-weight:400!important}
@media(min-width:1101px){
.site-footer .footer-main{grid-template-columns:42% minmax(0,1fr);column-gap:32px}
.site-footer .footer-links{grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;justify-content:normal}
}
@media(min-width:601px) and (max-width:1100px){
.site-footer .footer-main{grid-template-columns:1fr;gap:36px}
.site-footer .footer-links{grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;justify-content:normal}
}
.resource-menu[hidden],.resource-submenu[hidden]{display:none!important}
.site-header .resource-menu{padding:0;background:none;box-shadow:none;left:-25px;top:calc(var(--header-height) - 2px);width:max-content;min-width:0;border-radius:0}
.resource-primary,.resource-submenu{padding:15px 10px;background:#fff;border-radius:14px;box-shadow:0 8px 24px #21344e24}
.site-header .resource-menu button,.site-header .resource-menu a{display:flex;align-items:center;justify-content:flex-start;text-align:left;width:100%;padding:12px 21px;min-height:49px;border-radius:7px;white-space:nowrap;font-size:18px;font-weight:400;line-height:25px}
.resource-submenu{position:absolute;left:calc(100% + 12px);top:0;width:max-content}
.resource-submenu::before{content:'';position:absolute;right:100%;top:0;width:13px;height:100%}
.site-header .resource-menu :is(a,button):hover,.site-header .resource-menu :is(a,button):focus-visible{background:#f1f7ff;color:var(--hdd-brand)}
.site-header .resource-menu a[aria-current=page]{color:var(--hdd-brand);background:#f3f8ff}
.dropdown-toggle[aria-expanded=true]{color:var(--hdd-brand)}
.dropdown-toggle .chevron{transition:transform .2s}
.dropdown-toggle[aria-expanded=true] .chevron{transform:rotate(225deg);margin-top:7px}
@media(max-width:900px){
.site-header .resource-menu{position:static;width:auto;min-width:0;margin:0;padding:0;max-width:100%}
.resource-primary{border-radius:9px;padding:5px;box-shadow:none;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;background:#e8f2ff}
.site-header .resource-primary :is(a,button){font-size:15px;padding:11px 8px;justify-content:center;min-height:44px}
.resource-submenu{position:static;width:100%;box-shadow:none;border-radius:0 0 10px 10px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));padding:8px}
.resource-submenu::before{display:none}
.site-header .resource-submenu :is(a,button){font-size:15px;padding:10px 12px;min-height:42px}
}

/* 统一文字层级与四个页脚二维码。 */
/* 品牌色取自 header-3cab0d8848.svg：文字 #318FFC；图形 #52ACF9 → #1777FF。 */
:root{--hdd-brand:#318ffc;--hdd-brand-light:#52acf9;--hdd-brand-strong:#1777ff;--hdd-brand-text:var(--hdd-brand);--hdd-brand-text-hover:var(--hdd-brand);--hdd-brand-pale:#edf6ff;--hdd-brand-soft:#f6faff;--hdd-brand-line:#cde4fe;--hdd-line:#dfe7f1;--hdd-canvas:#f6f8fb;--blue:var(--hdd-brand)}
body #help-page{--brand:var(--hdd-brand);--brand-deep:var(--hdd-brand-text-hover);--brand-pale:var(--hdd-brand-pale)}
#help-page.hdd-original-home,#help-page.hdd-editorial{--hdd-text:#26323f;--hdd-body:#4b5868;--hdd-muted:#5b6776;--hdd-link:var(--hdd-brand-text);--hdd-link-hover:var(--hdd-brand-text-hover)}
.site-footer .footer-brand{min-width:0}
.site-footer .qr-list{display:grid;grid-template-columns:repeat(4,minmax(0,92px));gap:14px;width:410px;max-width:100%;margin-top:19px}
.site-footer .qr-item{width:100%;min-width:0;display:flex;align-items:stretch;gap:9px;text-align:center}
.site-footer .qr-item img{width:100%;height:auto;aspect-ratio:1/1;object-fit:contain;background:#fff;padding:4px;border-radius:5px}
.site-footer .qr-item span{width:100%;font-size:10.5px;line-height:1.7;padding:3px 0;border-radius:3px;white-space:normal;overflow-wrap:anywhere}
@media(max-width:600px){.site-footer .qr-list{width:228px;grid-template-columns:repeat(2,minmax(0,106px));gap:18px 16px}.site-footer .qr-item span{font-size:12px}}
/* 页脚与文字变量结束。 */

/* 统一头部：官网首页与免费体验 ERP。 */
.site-header .header-actions{gap:26px;flex-shrink:0;margin-left:auto}
.site-header .hdd-official-link{display:inline-flex;align-items:center;gap:4px;white-space:nowrap;color:var(--hdd-brand);font-size:16px;line-height:1.5}
.site-header .hdd-official-link:hover{color:var(--hdd-brand-text-hover)}
.site-header .hdd-official-link span{font-size:14px}
.site-header .hdd-trial-button{display:inline-flex;align-items:center;justify-content:center;white-space:nowrap;min-height:46px;padding:0 24px;border-radius:10px;background:linear-gradient(105deg,var(--hdd-brand),var(--hdd-brand-strong));color:#fff;font-size:16px;font-weight:600;line-height:1.5;box-shadow:0 5px 13px #318ffc24;transition:background-color .2s,box-shadow .2s}
.site-header .hdd-trial-button:hover{background:var(--hdd-brand-strong);color:#fff;box-shadow:0 6px 16px #318ffc3b}
@media(min-width:901px) and (max-width:1199px){.site-header nav{gap:24px;margin-left:30px}.site-header .header-actions{gap:18px}.site-header .hdd-official-link{font-size:14px}.site-header .hdd-trial-button{font-size:14px;min-height:40px;padding:0 18px}}
@media(max-width:900px){.site-header .header-actions{gap:13px}.site-header .hdd-official-link{font-size:13px}.site-header .hdd-trial-button{font-size:13px;min-height:38px;padding:0 16px;border-radius:8px}}
@media(max-width:480px){.site-header .header-inner{gap:10px}.site-header .brand,.site-header .brand img{width:88px}.site-header .header-actions{gap:9px}.site-header .hdd-official-link{font-size:12px;gap:2px}.site-header .hdd-official-link span{font-size:11px}.site-header .hdd-trial-button{font-size:12px;min-height:36px;padding:0 12px}}
@media(max-width:360px){.site-header .container{max-width:calc(100% - 20px)}.site-header .brand,.site-header .brand img{width:77px}.site-header .header-inner{gap:8px}.site-header .header-actions{gap:7px}.site-header .hdd-trial-button{padding:0 9px}}
@media(prefers-reduced-motion:reduce){.site-header .hdd-trial-button{transition:none}}

/* 导航、焦点、页脚强调沿用同一品牌色。 */
.site-header nav .active,.site-header nav a:hover,.site-header nav button:hover{color:var(--hdd-brand)}
.site-header nav .active:after,.site-footer .footer-links h3:after{background:var(--hdd-brand)}
.site-header .resource-menu :is(a,button):is(:hover,:focus-visible){color:var(--hdd-brand-text);background:var(--hdd-brand-pale)}
.site-footer .footer-links a:hover{color:var(--hdd-brand-light)}
body #help-page .text-action{color:var(--hdd-brand-text)}
body #help-page :is(a,button,input):focus-visible{outline-color:rgba(49,143,252,.38)}
.dialog-confirm.orange-button{background:var(--hdd-brand);border-radius:10px}
.dialog-confirm.orange-button:hover{background:var(--hdd-brand-strong)}

/* 新版页面共用的卡片与标题层级；交互文字沿用头部 #318FFC。 */
:root{--hdd-card-radius:12px;--hdd-card-shadow:0 3px 14px rgba(31,58,91,.035);--hdd-card-hover-shadow:0 7px 22px rgba(31,58,91,.065)}
body #help-page.hdd-editorial :is(.hdd-story-copy h2,.hdd-rail-card h2,.hdd-related-heading h2,.hdd-article-list-page-title h2),body #help-page.hdd-original-home .section-title{font-weight:600!important}
body #help-page.hdd-editorial,body #help-page.hdd-original-home{overflow-wrap:break-word}

/* 帮助中心简洁头部：标题配色与用户提供的“资讯”参考一致。 */
body.help-active{--header-height:88px}
/* 按该断点最高的页头预留锚点距离，旧版手机浏览器也无需解析 :has。 */
html{scroll-padding-top:103px}
body .site-header.hdd-help-header{position:fixed;height:var(--header-height);background:#fff;border-bottom:1px solid #e0eafd;box-shadow:none;backdrop-filter:none;-webkit-backdrop-filter:none}
body .site-header.hdd-help-header.is-scrolled{background:#fff;box-shadow:0 3px 14px #183c6a08}
.hdd-help-header .header-inner{gap:0}
/* Logo 直接使用资讯页共用的 .brand 尺寸及响应式规则。 */
.hdd-help-divider,.hdd-article-divider{flex:0 0 1px;width:1px;height:26px;margin:0 26px;background:#e2e7ee}
body .hdd-help-header .hdd-help-nav{position:static;display:flex;flex-direction:row;align-items:center;gap:28px;height:100%;max-height:none;margin:0;padding:0;background:transparent;box-shadow:none;overflow:visible;backdrop-filter:none;-webkit-backdrop-filter:none}
body .hdd-help-header .hdd-help-nav>a{position:relative;height:100%;display:inline-flex;align-items:center;line-height:1.4;letter-spacing:0;text-decoration:none}
body .hdd-help-header .hdd-help-home-link,body .hdd-article-header .hdd-article-home-link{color:#3488f0;font-size:24px;font-weight:700}
body .hdd-article-header .hdd-article-home-link{display:inline-flex;flex-shrink:0;align-items:center;align-self:stretch;line-height:1.4;white-space:nowrap;text-decoration:none}
body .hdd-help-header .hdd-help-nav>a:is(:hover,:focus-visible){color:#3488f0}
body .hdd-help-header .hdd-help-nav>a::after{content:none;display:none}
/* 兼容尚未重新生成的旧静态页面。 */
body .hdd-help-header .hdd-help-nav>a.hdd-help-section-link{display:none}
.hdd-help-header .header-actions{margin-left:auto;padding-left:28px}
.hdd-help-header a:focus-visible{outline-color:#3488f0;outline-offset:5px}
/* 按钮悬停、按下、返回页面时保持同一底色，避免渐变与纯色瞬间切换。 */
body .site-header.hdd-help-header .hdd-trial-button{background:linear-gradient(105deg,var(--hdd-brand),var(--hdd-brand-strong));color:#fff;box-shadow:0 5px 13px #318ffc24;transition:none}
@media(min-width:681px) and (max-width:900px){
  body.help-active{--header-height:80px}
  html{scroll-padding-top:95px}
  .hdd-help-divider,.hdd-article-divider{margin:0 20px}
  body .hdd-help-header .hdd-help-nav{gap:22px}
  body .hdd-help-header .hdd-help-home-link,body .hdd-article-header .hdd-article-home-link{font-size:22px}
  .hdd-help-header .header-actions{padding-left:20px}
}
@media(max-width:680px){
  body.help-active{--header-height:64px}
  html{scroll-padding-top:76px}
  .site-header.hdd-help-header .container{width:auto;max-width:calc(100% - 32px)}
  .site-header.hdd-help-header .header-inner{display:grid;grid-template-columns:minmax(0,1fr) auto;grid-template-rows:62px 47px;gap:0}
  .site-header.hdd-help-header .brand{grid-column:1;grid-row:1}
  .hdd-help-divider,.hdd-article-divider{display:none}
  .hdd-help-header .header-actions{grid-column:2;grid-row:1;padding-left:12px;margin-left:0}
  .site-header.hdd-help-header .hdd-trial-button{min-height:38px;padding:0 14px;font-size:13px;border-radius:8px}
  body .hdd-help-header .hdd-help-nav{grid-column:1/-1;grid-row:2;gap:28px;align-self:stretch}
  body .hdd-help-header .hdd-help-home-link,body .hdd-article-header .hdd-article-home-link{font-size:20px}
}

/* 当前教程保持清晰可见；定位由目录自身的滚动容器处理。 */
#help-page .toc-link[aria-current="page"]{color:var(--brand);font-weight:600;box-shadow:inset 3px 0 var(--brand);background:var(--brand-pale)}

/* 手机公共布局：页头脱离文档流，由主内容统一预留高度；body 不重复占位。 */
@media(max-width:760px){
  body #help-page{padding-top:var(--header-height);min-width:0}
  body #help-page .search-form input{font-size:16px}
  body #help-page .search-form input::placeholder{font-size:14px}
  body #help-page .hdd-side-search .search-form{height:44px}
  body #help-page .hdd-side-search .search-submit{width:34px;height:34px}
}
@media(max-width:680px){
  body.help-active,body.hdd-articles-site{--header-height:64px}
  html{scroll-padding-top:76px}
  body .site-header.hdd-help-header,body .site-header.hdd-article-header{position:fixed;height:var(--header-height);background:#fff;border-bottom:1px solid #e0eafd;backdrop-filter:none;-webkit-backdrop-filter:none}
  body .site-header.hdd-help-header .container,body .site-header.hdd-article-header .container{width:auto;max-width:calc(100% - 24px)}
  body .site-header.hdd-help-header .header-inner,body .site-header.hdd-article-header .header-inner{display:flex;align-items:center;gap:10px;min-width:0}
  body .site-header.hdd-help-header .header-actions,body .site-header.hdd-article-header .header-actions{margin-left:auto;padding-left:0;gap:0}
  body .hdd-help-header .hdd-help-nav{flex:0 0 auto;align-self:stretch;height:100%;gap:0}
  body .hdd-help-header .hdd-help-home-link,body .hdd-article-header .hdd-article-home-link{font-size:18px}
  body .site-header.hdd-help-header .hdd-trial-button,body .site-header.hdd-article-header .hdd-trial-button{min-height:40px;padding:0 12px;font-size:12px;border-radius:8px}
  .hdd-article-header .menu-toggle{flex:0 0 30px;min-height:44px;width:30px;align-items:center;justify-content:center;margin-left:0}
  .hdd-article-header #main-nav{top:var(--header-height);max-height:calc(100dvh - var(--header-height));overscroll-behavior:contain}
}
@media(max-width:360px){
  body .site-header.hdd-help-header .header-inner,body .site-header.hdd-article-header .header-inner{gap:8px}
  body .hdd-help-header .hdd-help-home-link,body .hdd-article-header .hdd-article-home-link{font-size:17px}
  body .site-header.hdd-help-header .hdd-trial-button,body .site-header.hdd-article-header .hdd-trial-button{padding:0 10px}
}
@media(max-width:600px){
  body .site-footer{height:auto;min-height:0;padding:28px 0 0}
  .site-footer .container{width:auto;max-width:calc(100% - 32px)}
  .site-footer .footer-main{display:grid;grid-template-columns:minmax(0,1fr);gap:24px;padding-bottom:20px}
  .site-footer .footer-brand{display:flex;flex-direction:column;align-items:center;text-align:center}
  .site-footer .footer-logo{width:144px;height:auto;margin-left:auto;margin-right:auto}
  .site-footer .qr-list{width:100%;max-width:400px;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 20px;margin:14px auto 0}
  .site-footer .qr-item{gap:6px}
  .site-footer .qr-item span{font-size:12px;line-height:1.6;padding:3px 0}
  .site-footer .footer-links{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px 18px;padding:0;margin:0;justify-content:normal;text-align:center}
  .site-footer .footer-links h3{font-size:14px;line-height:1.6;margin-bottom:16px;white-space:normal;text-align:center}
  .site-footer .footer-links h3::after{left:50%;transform:translateX(-50%)}
  .site-footer .footer-links a,.site-footer .footer-links .footer-static{font-size:12px;line-height:1.75;margin-bottom:8px;overflow-wrap:anywhere;text-align:center}
  .site-footer .copyright{height:auto;min-height:0;margin-top:0;padding:18px 0 24px;font-size:11px;line-height:1.8;white-space:normal;overflow-wrap:anywhere}
  .site-footer .copyright span{display:block}
  dialog{max-height:calc(100dvh - 32px);overflow:auto;padding:26px 20px}
}
/* 防止扩展的全局标题颜色影响深色页脚 */
.site-footer .footer-links h3 {
  color: #fff;
}