/* roulang page: index */
:root{
  --ink:#0E1117;
  --ink-2:#1B2029;
  --paper:#F6F4EF;
  --paper-2:#FFFFFF;
  --accent:#12B39A;
  --accent-ink:#05100E;
  --haze:#8A8FA3;
  --line:rgba(14,17,23,.10);
  --line-dark:rgba(255,255,255,.12);
  --violet:#6C63C9;
  --r-card:16px;
  --r-media:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,17,23,.04), 0 10px 28px -18px rgba(14,17,23,.20);
  --sh-2:0 2px 4px rgba(14,17,23,.06), 0 18px 40px -20px rgba(14,17,23,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-cn:'Inter','HarmonyOS Sans SC','PingFang SC','Noto Sans SC','Microsoft YaHei',sans-serif;
  --font-mono:'JetBrains Mono','SFMono-Regular',Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
h1,h2,h3,h4,p,figure,ul,ol{margin:0}
h1,h2,h3,h4{font-weight:700;line-height:1.2;letter-spacing:-0.01em}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}

.container,.container-sm,.container-md,.container-lg,.container-xl,.container-xxl{
  width:100%;max-width:1240px;margin:0 auto;
  padding-left:24px;padding-right:24px;
}
@media (min-width:1400px){
  .container,.container-sm,.container-md,.container-lg,.container-xl,.container-xxl{max-width:1280px}
}
@media (max-width:991.98px){
  .container,.container-sm,.container-md,.container-lg,.container-xl,.container-xxl{padding-left:20px;padding-right:20px}
}
@media (max-width:767.98px){
  .container,.container-sm,.container-md,.container-lg,.container-xl,.container-xxl{padding-left:16px;padding-right:16px}
}

/* ---------- 通用组件 ---------- */
.btn-ink,.btn-ghost,.btn-light{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  border:1px solid transparent;cursor:pointer;
  transition:background-color 240ms var(--ease),color 240ms var(--ease),border-color 240ms var(--ease),transform 240ms var(--ease),box-shadow 240ms var(--ease);
}
.btn-ink{background:var(--ink);color:#fff;border-color:var(--ink)}
.btn-ink:hover{background:var(--accent);border-color:var(--accent);color:var(--accent-ink);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-ink:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn-light{background:#fff;color:var(--ink);border-color:#fff}
.btn-light:hover{background:var(--accent);border-color:var(--accent);color:var(--accent-ink);transform:translateY(-1px)}
@media (max-width:767.98px){
  .btn-ink,.btn-ghost,.btn-light{height:44px;padding:0 20px;font-size:14px}
}
.link-ink{
  color:var(--ink);
  text-decoration:underline;
  text-decoration-color:var(--accent);
  text-underline-offset:3px;
  text-decoration-thickness:1.5px;
  transition:text-decoration-color 200ms var(--ease),color 200ms var(--ease);
}
.link-ink:hover{text-decoration-color:var(--ink)}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-weight:600}

/* ---------- 顶部倒计时条 ---------- */
.countdown{background:var(--ink);color:#fff;position:relative;overflow:hidden}
.countdown::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:radial-gradient(1.2px 1.2px at 12% 30%,#fff,transparent),radial-gradient(1px 1px at 68% 66%,#fff,transparent),radial-gradient(1.4px 1.4px at 88% 24%,#fff,transparent);
}
.cd-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:68px;position:relative;z-index:1}
.cd-text{font-size:13px;color:rgba(255,255,255,.76);letter-spacing:.01em}
.cd-clock{display:flex;align-items:center;gap:6px;flex:0 0 auto}
.cd-cell{display:flex;align-items:baseline;gap:4px;padding:0 8px}
.cd-num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-weight:600;font-size:20px;line-height:1;color:#fff}
.cd-lab{font-size:12px;color:var(--haze)}
.cd-sep{font-family:var(--font-mono);font-size:18px;color:var(--accent);animation:blink 1s steps(1,end) infinite}
@keyframes blink{0%,49%{opacity:1}50%,100%{opacity:.25}}
.cd-cta{
  font-size:13px;font-weight:600;color:var(--accent);
  border:1px solid rgba(18,179,154,.45);border-radius:var(--r-pill);
  padding:7px 16px;transition:background-color 240ms var(--ease),color 240ms var(--ease);
  white-space:nowrap;
}
.cd-cta:hover{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
@media (max-width:991.98px){
  .cd-inner{flex-wrap:wrap;gap:12px;padding:14px 0}
}
@media (max-width:767.98px){
  .cd-inner{flex-direction:column;align-items:flex-start;gap:10px}
  .cd-clock{width:100%;justify-content:space-between;overflow-x:auto}
  .cd-cell{padding:0}
  .cd-cta{align-self:flex-start}
}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(246,244,239,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background-color 240ms var(--ease),border-color 240ms var(--ease),box-shadow 240ms var(--ease);
}
.site-header.is-stuck{border-bottom-color:var(--line);box-shadow:0 1px 0 rgba(14,17,23,.02),0 10px 30px -26px rgba(14,17,23,.35)}
.nav-shell{
  position:relative;display:flex;align-items:center;height:72px;
  transition:height 240ms var(--ease);
}
.site-header.is-stuck .nav-shell{height:60px}
.nav-side{flex:1;display:flex;align-items:center;gap:30px;min-width:0}
.nav-side.right{justify-content:flex-end}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:rgba(14,17,23,.88);
  padding:6px 0;white-space:nowrap;transition:color 200ms var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left center;transition:transform 240ms var(--ease);
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.brand{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  display:flex;align-items:center;gap:10px;
}
.brand-mark{flex:0 0 auto}
.brand-name{display:flex;flex-direction:column;line-height:1.15;font-size:17px;font-weight:700;letter-spacing:.01em;color:var(--ink)}
.brand-name em{font-style:normal;font-size:11px;font-weight:500;letter-spacing:.16em;color:var(--haze);margin-top:2px}
.nav-cta{height:40px;padding:0 20px;font-size:14px;border-radius:var(--r-btn)}
.burger{
  width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:var(--paper-2);display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  cursor:pointer;transition:border-color 200ms var(--ease);
}
.burger span{display:block;width:18px;height:1.5px;background:var(--ink);border-radius:2px;transition:transform 240ms var(--ease),opacity 200ms var(--ease)}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}
.mobile-bar{display:none;align-items:center;gap:12px}
@media (max-width:991.98px){
  .nav-side{display:none}
  .mobile-bar{display:flex}
  .brand{position:static;transform:none;flex:1}
  .nav-shell{justify-content:space-between}
}
.mobile-menu{
  border-top:1px solid var(--line);
  background:var(--paper);
}
.mobile-menu .mm-inner{padding:20px 0 32px}
.mobile-menu .mm-link{
  display:block;font-size:20px;font-weight:600;padding:16px 0;border-bottom:1px solid var(--line);
  color:var(--ink);transition:color 200ms var(--ease),padding-left 240ms var(--ease);
}
.mobile-menu .mm-link:hover{color:var(--accent);padding-left:6px}
.mobile-menu .mm-link.is-active{color:var(--accent)}
.mobile-menu .mm-foot{margin-top:24px;display:flex;flex-direction:column;gap:12px}
.mobile-menu .mm-contact{font-size:13px;color:var(--haze)}

/* ---------- Hero ---------- */
.hero{padding:72px 0 96px;position:relative;overflow:hidden}
.hero::before{
  content:"";position:absolute;right:-140px;top:-80px;width:520px;height:520px;border-radius:50%;
  border:1px solid rgba(14,17,23,.06);pointer-events:none;
}
.hero-eyebrow{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;color:var(--accent);
  text-transform:uppercase;margin-bottom:18px;
}
.hero-title{font-size:48px;line-height:1.16;letter-spacing:-0.015em;max-width:15em}
.hero-sub{font-size:18px;line-height:1.72;color:rgba(14,17,23,.68);margin-top:20px;max-width:34em}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:32px}
.hero-stats{
  display:flex;align-items:stretch;gap:0;margin-top:44px;
  border-top:1px solid var(--line);padding-top:22px;flex-wrap:wrap;
}
.stat{flex:1 1 0;min-width:120px;padding-right:24px}
.stat + .stat{border-left:1px solid var(--line);padding-left:24px}
.stat-num{display:block;font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-weight:600;font-size:24px;line-height:1.2}
.stat-label{display:block;font-size:12px;color:var(--haze);margin-top:6px}
.hero-media{position:relative;border-radius:var(--r-media);overflow:hidden;box-shadow:var(--sh-1)}
.hero-media img{width:100%;aspect-ratio:16/9;object-fit:cover}
.hero-media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(circle at 76% 24%,rgba(255,255,255,.28),transparent 42%);
}
.hero-arc{position:absolute;left:-24px;bottom:-24px;width:210px;height:210px;opacity:.18;pointer-events:none}
@media (max-width:1199.98px){.hero-title{font-size:42px}}
@media (max-width:991.98px){
  .hero{padding:48px 0 64px}
  .hero-title{font-size:36px;max-width:100%}
  .hero-sub{font-size:16px}
  .hero-media{margin-top:8px}
}
@media (max-width:767.98px){
  .hero-title{font-size:30px}
  .hero-stats{padding-top:18px;margin-top:32px}
  .stat{flex:1 1 46%;padding-right:0}
  .stat + .stat{border-left:0;padding-left:0}
  .stat:nth-child(2){border-left:1px solid var(--line);padding-left:18px}
  .stat:nth-child(3){flex-basis:100%;border-top:1px solid var(--line);margin-top:14px;padding-top:14px}
}

/* ---------- 板块标题 ---------- */
.section{padding:96px 0}
.section--tight{padding:72px 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px}
.sec-eyebrow{font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;color:var(--accent);margin-bottom:10px}
.sec-title{font-size:32px;line-height:1.24}
.sec-desc{font-size:15px;color:rgba(14,17,23,.66);margin-top:12px;max-width:44em}
@media (max-width:991.98px){
  .section{padding:64px 0}
  .sec-title{font-size:26px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:32px}
}
@media (max-width:767.98px){
  .section{padding:48px 0}
  .sec-title{font-size:23px}
}

/* ---------- 卖点：左标题 + 右编号清单 ---------- */
.pitch-side{position:sticky;top:96px}
.pitch-side h2{font-size:32px;line-height:1.24}
.pitch-side p{font-size:15px;color:rgba(14,17,23,.66);margin-top:16px;max-width:22em}
.pitch-side .link-ink{display:inline-block;margin-top:22px;font-size:15px;font-weight:600}
.pitch-list{border-top:1px solid var(--line)}
.pitch-item{
  position:relative;display:flex;gap:24px;padding:28px 24px 28px 0;
  border-bottom:1px solid var(--line);
  transition:background-color 240ms var(--ease);
}
.pitch-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--accent);
  transform:scaleY(0);transform-origin:top center;transition:transform 240ms var(--ease);
}
.pitch-item:hover{background-color:rgba(255,255,255,.6)}
.pitch-item:hover::before{transform:scaleY(1)}
.pitch-num{font-family:var(--font-mono);font-weight:600;font-size:32px;line-height:1;color:var(--accent);flex:0 0 auto;min-width:56px}
.pitch-body h3{font-size:20px;line-height:1.35}
.pitch-body p{font-size:15px;line-height:1.7;color:rgba(14,17,23,.66);margin-top:10px}
@media (max-width:991.98px){
  .pitch-side{position:static;margin-bottom:28px}
  .pitch-side h2{font-size:26px}
  .pitch-item{padding:22px 12px 22px 14px;gap:16px}
  .pitch-num{font-size:26px;min-width:44px}
  .pitch-body h3{font-size:18px}
}
@media (max-width:767.98px){
  .pitch-side h2{font-size:23px}
  .pitch-item{flex-direction:column;gap:8px}
}

/* ---------- 图墙 ---------- */
.gallery{display:grid;grid-template-columns:repeat(12,1fr);gap:16px}
.g-item{
  position:relative;height:280px;border-radius:var(--r-media);overflow:hidden;background:var(--paper);
  box-shadow:var(--sh-1);
}
.g-item img{width:100%;height:100%;object-fit:cover;transition:transform 400ms var(--ease)}
.g-item::after{
  content:"";position:absolute;inset:0;border-radius:var(--r-media);
  border:1px solid transparent;transition:border-color 240ms var(--ease);
}
.g-item:hover img{transform:scale(1.03)}
.g-item:hover::after{border-color:rgba(18,179,154,.6)}
.g-cap{
  position:absolute;left:0;right:0;bottom:0;padding:12px 16px;
  display:flex;align-items:center;gap:10px;
  background:linear-gradient(180deg,rgba(14,17,23,0),rgba(14,17,23,.82));
  color:#fff;font-size:12px;letter-spacing:.01em;
  transform:translateY(100%);transition:transform 320ms var(--ease);
}
.g-item:hover .g-cap,.g-item:focus-within .g-cap{transform:translateY(0)}
.g-cap .mono{color:var(--accent);font-size:12px}
.g-1{grid-column:span 5}
.g-2{grid-column:span 4}
.g-3{grid-column:span 3}
.g-4{grid-column:span 3}
.g-5{grid-column:span 4}
.g-6{grid-column:span 5}
@media (max-width:991.98px){
  .g-item{height:220px}
  .g-cap{transform:translateY(0);background:linear-gradient(180deg,rgba(14,17,23,0),rgba(14,17,23,.74))}
}
@media (max-width:767.98px){
  .gallery{grid-template-columns:repeat(2,1fr);gap:12px}
  .g-1,.g-2,.g-3,.g-4,.g-5,.g-6{grid-column:span 1}
  .g-item{height:150px}
  .g-cap{padding:8px 10px;font-size:11px}
}

/* ---------- 报名 CTA ---------- */
.signup{
  position:relative;background:var(--ink);color:#fff;padding:96px 0;overflow:hidden;
}
.signup::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:radial-gradient(1.2px 1.2px at 8% 22%,#fff,transparent),radial-gradient(1px 1px at 46% 78%,#fff,transparent),radial-gradient(1.3px 1.3px at 82% 34%,#fff,transparent);
}
.signup::after{
  content:"";position:absolute;inset:24px;border:1px solid var(--line-dark);border-radius:12px;pointer-events:none;
}
.signup .container{position:relative;z-index:1}
.signup h2{font-size:32px;line-height:1.24;color:#fff}
.signup .lead{font-size:16px;line-height:1.75;color:rgba(255,255,255,.7);margin-top:16px;max-width:28em}
.benefit-list{margin-top:28px;display:flex;flex-direction:column;gap:14px}
.benefit-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:rgba(255,255,255,.88)}
.tick{
  flex:0 0 auto;width:20px;height:20px;margin-top:3px;border-radius:50%;
  border:1.5px solid var(--accent);display:inline-flex;align-items:center;justify-content:center;
}
.tick::after{content:"";width:7px;height:4px;border-left:1.6px solid var(--accent);border-bottom:1.6px solid var(--accent);transform:rotate(-45deg) translateY(-1px)}
.form-card{
  background:var(--paper-2);border-radius:var(--r-card);padding:32px;box-shadow:var(--sh-1);color:var(--ink);
}
.form-card h3{font-size:20px;line-height:1.35}
.form-card .hint{font-size:13px;color:var(--haze);margin-top:8px}
.field{margin-top:18px}
.field label{display:block;font-size:13px;color:rgba(14,17,23,.7);margin-bottom:8px}
.field .control{
  width:100%;height:48px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.field textarea.control{height:104px;padding:12px 14px;line-height:1.6;resize:vertical}
.field select.control{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--haze) 50%),linear-gradient(135deg,var(--haze) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 15px) 21px;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.field .control:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(18,179,154,.16)}
.field.has-error .control{border-color:#C8462F}
.field .err{display:none;font-size:12px;color:#C8462F;margin-top:6px}
.field.has-error .err{display:block}
.check-row{display:flex;gap:10px;align-items:flex-start;margin-top:20px;font-size:13px;color:rgba(14,17,23,.7)}
.check-row input{width:16px;height:16px;margin-top:4px;accent-color:var(--accent)}
.form-card .btn-ink{width:100%;margin-top:22px}
.form-msg{display:none;margin-top:16px;font-size:13px;color:var(--accent);font-weight:600}
.form-msg.show{display:block}
@media (max-width:991.98px){
  .signup{padding:64px 0}
  .signup h2{font-size:26px}
  .signup::after{inset:14px}
  .form-card{padding:24px;margin-top:32px}
}
@media (max-width:767.98px){
  .signup{padding:48px 0}
  .signup h2{font-size:23px}
}

/* ---------- FAQ Accordion ---------- */
.rule-accordion{border-top:1px solid var(--line)}
.rule-accordion .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line);border-radius:0}
.rule-accordion .accordion-header{margin:0}
.rule-accordion .accordion-button{
  background:transparent;border:0;border-radius:0;box-shadow:none;
  display:flex;align-items:flex-start;gap:16px;
  padding:24px 44px 24px 0;position:relative;
  font-size:18px;font-weight:600;line-height:1.5;color:var(--ink);
  transition:color 200ms var(--ease);
}
.rule-accordion .accordion-button:not(.collapsed){background:transparent;color:var(--ink);box-shadow:none}
.rule-accordion .accordion-button:hover{color:var(--accent)}
.rule-accordion .accordion-button:focus{box-shadow:none;outline:2px solid var(--accent);outline-offset:2px;z-index:2}
.rule-accordion .accordion-button::after{display:none}
.faq-num{font-family:var(--font-mono);font-weight:600;font-size:14px;color:var(--accent);flex:0 0 auto;padding-top:4px;min-width:26px}
.faq-plus{
  position:absolute;right:6px;top:30px;width:14px;height:14px;flex:0 0 auto;
  transition:transform 240ms var(--ease);
}
.faq-plus::before,.faq-plus::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--ink);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-plus::before{width:14px;height:1.5px}
.faq-plus::after{width:1.5px;height:14px}
.rule-accordion .accordion-button:not(.collapsed) .faq-plus{transform:rotate(45deg)}
.rule-accordion .accordion-body{
  padding:0 60px 26px 42px;font-size:15px;line-height:1.85;color:rgba(14,17,23,.72);
}
@media (max-width:767.98px){
  .rule-accordion .accordion-button{font-size:16px;padding:20px 40px 20px 0;gap:12px}
  .faq-plus{top:26px}
  .rule-accordion .accordion-body{padding:0 0 22px 38px}
}

/* ---------- 最新信息 ---------- */
.news-section{background:var(--paper-2);border-top:1px solid var(--line)}
.news-list{--bs-gutter-x:1.5rem}
.news-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  transition:transform 240ms var(--ease),border-color 240ms var(--ease),box-shadow 240ms var(--ease);
}
.news-card:hover{transform:translateY(-3px);border-color:rgba(18,179,154,.45);box-shadow:var(--sh-2)}
.news-cover{aspect-ratio:3/2;overflow:hidden;background:var(--paper)}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform 400ms var(--ease)}
.news-card:hover .news-cover img{transform:scale(1.03)}
.news-body{padding:20px 20px 18px;display:flex;flex-direction:column;flex:1 1 auto}
.news-badge{
  align-self:flex-start;font-size:12px;line-height:1;padding:6px 10px;border-radius:var(--r-pill);
  border:1px solid rgba(108,99,201,.5);color:var(--violet);letter-spacing:.02em;
  margin-bottom:14px;
}
.news-title{font-size:18px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-desc{
  font-size:14px;line-height:1.7;color:var(--haze);margin-top:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  margin-top:auto;padding-top:18px;display:flex;align-items:center;justify-content:space-between;
  border-top:1px solid var(--line);
}
.news-time{font-family:var(--font-mono);font-size:13px;color:var(--haze)}
.news-arrow{color:var(--ink);transition:transform 240ms var(--ease);font-size:16px;line-height:1}
.news-card:hover .news-arrow{transform:translateX(4px);color:var(--accent)}
.news-empty{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;
  padding:64px 24px;border:1px dashed var(--line);border-radius:var(--r-card);background:var(--paper);
  text-align:center;
}
.news-empty p{font-size:15px;color:var(--haze)}
.news-empty .btn-ghost{margin-top:4px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#fff;position:relative;overflow:hidden}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;background:var(--line-dark);
}
.site-footer::after{
  content:"";position:absolute;left:0;right:0;top:0;height:160px;pointer-events:none;opacity:.45;
  background-image:radial-gradient(1px 1px at 14% 30%,#fff,transparent),radial-gradient(1.2px 1.2px at 52% 62%,#fff,transparent),radial-gradient(1px 1px at 86% 26%,#fff,transparent);
}
.footer-inner{position:relative;z-index:1;padding:72px 0 28px}
.footer-brand-name{display:flex;flex-direction:column;font-size:19px;font-weight:700;line-height:1.2}
.footer-brand-name em{font-style:normal;font-size:11px;letter-spacing:.16em;color:var(--haze);font-weight:500;margin-top:4px}
.footer-desc{font-size:13px;line-height:1.8;color:rgba(255,255,255,.66);margin-top:16px;max-width:24em}
.footer-contact{margin-top:20px;display:flex;flex-direction:column;gap:10px;font-size:13px;color:rgba(255,255,255,.72)}
.footer-contact a:hover{color:var(--accent)}
.footer-col-title{font-size:12px;letter-spacing:.14em;color:var(--haze);margin-bottom:16px;font-family:var(--font-mono)}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.82);transition:color 200ms var(--ease)}
.footer-links a:hover{color:var(--accent)}
.footer-bottom{
  position:relative;z-index:1;margin-top:56px;padding-top:22px;border-top:1px solid var(--line-dark);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:var(--haze);
}
@media (max-width:991.98px){
  .footer-inner{padding:48px 0 24px}
  .footer-bottom{margin-top:36px}
}
@media (max-width:767.98px){
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .cd-sep{animation:none;opacity:1}
  .g-cap{transform:none}
}

/* roulang page: article */
:root{
  --ink:#0E1117;
  --ink-2:#1B2029;
  --paper:#F6F4EF;
  --paper-2:#FFFFFF;
  --accent:#12B39A;
  --accent-ink:#05100E;
  --haze:#8A8FA3;
  --line:rgba(14,17,23,.10);
  --line-dark:rgba(255,255,255,.12);
  --violet:#6C63C9;
  --r-card:16px;
  --r-media:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,17,23,.04),0 10px 28px -18px rgba(14,17,23,.20);
  --sh-2:0 2px 4px rgba(14,17,23,.06),0 18px 40px -20px rgba(14,17,23,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-sans:'Inter','HarmonyOS Sans SC','PingFang SC','Noto Sans SC','Microsoft YaHei',sans-serif;
  --font-mono:'JetBrains Mono','SFMono-Regular',Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:rgba(14,17,23,.88);
  font-family:var(--font-sans);font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--ink);text-decoration:none}
button,input,select,textarea{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.2;letter-spacing:-.01em}
p{margin:0}

.container{max-width:1240px;margin:0 auto;padding-left:24px;padding-right:24px;width:100%}
@media (min-width:1400px){.container{max-width:1280px}}
@media (max-width:991.98px){.container{padding-left:20px;padding-right:20px}}
@media (max-width:767.98px){.container{padding-left:16px;padding-right:16px}}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 28px;
  border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background 240ms var(--ease),color 240ms var(--ease),border-color 240ms var(--ease),transform 240ms var(--ease),box-shadow 240ms var(--ease);}
.btn-ink{background:var(--ink);color:#fff}
.btn-ink:hover{background:var(--accent);color:var(--accent-ink);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-ink:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{background:var(--accent);color:var(--accent-ink);transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
@media (max-width:767.98px){.btn{height:44px;padding:0 22px}}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:100;background:transparent;border-bottom:1px solid transparent;
  transition:background 240ms var(--ease),border-color 240ms var(--ease),backdrop-filter 240ms var(--ease)}
.site-header.is-stuck{background:rgba(246,244,239,.88);backdrop-filter:blur(10px);border-bottom-color:var(--line)}
.nav-shell{position:relative;display:flex;align-items:center;justify-content:space-between;height:72px;transition:height 240ms var(--ease)}
.site-header.is-stuck .nav-shell{height:60px}
.nav-side{display:flex;align-items:center;gap:28px;flex:1 1 0;min-width:0}
.nav-side.right{justify-content:flex-end;gap:20px}
.nav-link{position:relative;font-size:15px;font-weight:500;color:rgba(14,17,23,.88);padding:6px 0;white-space:nowrap}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform 240ms var(--ease)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link:hover{color:var(--ink)}
.nav-link.is-active{color:var(--ink);font-weight:600}
.brand{position:absolute;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:10px}
.brand-mark{flex:0 0 auto}
.brand-name{display:flex;flex-direction:column;line-height:1.1;font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.01em}
.brand-name em{font-style:normal;font-size:11px;font-weight:500;letter-spacing:.14em;color:var(--haze);font-family:var(--font-mono);margin-top:3px}
.nav-toggle{display:none;width:42px;height:42px;align-items:center;justify-content:center;background:transparent;
  border:1px solid var(--line);border-radius:var(--r-btn);cursor:pointer;transition:border-color 150ms var(--ease)}
.nav-toggle:hover{border-color:var(--accent)}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--ink);position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:1.5px;background:var(--ink);transition:transform 240ms var(--ease)}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle.is-open span{background:transparent}
.nav-toggle.is-open span::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span::after{transform:translateY(-6px) rotate(-45deg)}
.mobile-menu{position:fixed;top:0;left:0;right:0;z-index:95;background:var(--paper);padding:96px 24px 32px;
  transform:translateY(-100%);visibility:hidden;max-height:100vh;overflow-y:auto;
  box-shadow:0 24px 48px -32px rgba(14,17,23,.45);
  transition:transform 320ms var(--ease),visibility 320ms var(--ease)}
.mobile-menu.is-open{transform:translateY(0);visibility:visible}
.mobile-menu nav{display:flex;flex-direction:column;margin-bottom:28px}
.mobile-menu nav a{font-size:20px;font-weight:600;color:var(--ink);padding:16px 0;border-bottom:1px solid var(--line);
  opacity:0;transform:translateY(-8px);transition:opacity 300ms var(--ease),transform 300ms var(--ease)}
.mobile-menu.is-open nav a{opacity:1;transform:none}
.mobile-menu.is-open nav a:nth-child(1){transition-delay:40ms}
.mobile-menu.is-open nav a:nth-child(2){transition-delay:80ms}
.mobile-menu.is-open nav a:nth-child(3){transition-delay:120ms}
.mobile-menu .btn{width:100%}
.mm-note{margin-top:20px;font-size:13px;color:var(--haze);line-height:1.8}
@media (max-width:991.98px){
  .nav-side.left{display:none}
  .nav-side.right{flex:0 0 auto;gap:12px}
  .nav-side.right nav,.nav-side.right .btn{display:none}
  .nav-toggle{display:inline-flex}
  .brand{position:static;transform:none}
  .nav-shell{justify-content:space-between}
}
@media (min-width:992px){.mobile-menu{display:none}}
body.menu-open{overflow:hidden}

/* ---------- 面包屑 ---------- */
.breadcrumb-bar{padding:32px 0 0;font-size:13px;color:var(--haze);display:flex;flex-wrap:wrap;align-items:center;gap:6px}
.breadcrumb-bar a{color:var(--haze);transition:color 150ms var(--ease)}
.breadcrumb-bar a:hover{color:var(--accent)}
.breadcrumb-bar .sep{opacity:.55}
.breadcrumb-bar .current{color:var(--ink);font-weight:500;max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章标题区 ---------- */
.article-head{max-width:760px;margin:0 auto;padding:36px 0 0}
.badge-cat{display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:var(--r-pill);
  border:1px solid rgba(108,99,201,.45);color:var(--violet);font-size:12px;font-weight:600;letter-spacing:.04em}
.article-head h1{margin:20px 0 18px;font-size:40px;line-height:1.28;letter-spacing:-.015em}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:13px;color:var(--haze);font-family:var(--font-mono)}
.meta-row .bar{width:1px;height:12px;background:var(--line)}
.head-rule{height:1px;background:var(--line);margin-top:32px}
@media (max-width:767.98px){
  .article-head{padding-top:26px}
  .article-head h1{font-size:29px;line-height:1.34}
  .head-rule{margin-top:24px}
}

/* ---------- 正文阅读区 ---------- */
.article-body{max-width:760px;margin:0 auto;padding:44px 0 0;font-size:16px;line-height:1.85;color:rgba(14,17,23,.86)}
.article-body > * + *{margin-top:20px}
.article-body h2{position:relative;font-size:24px;line-height:1.42;margin:48px 0 16px;padding-left:14px}
.article-body h2::before{content:"";position:absolute;left:0;top:.5em;width:3px;height:20px;border-radius:2px;background:var(--accent)}
.article-body h3{font-size:20px;line-height:1.5;margin:32px 0 12px}
.article-body p{margin:0}
.article-body > p:first-of-type{font-size:18px;line-height:2;color:rgba(14,17,23,.92)}
.article-body ul,.article-body ol{margin:20px 0;padding-left:24px}
.article-body li{margin-bottom:10px}
.article-body li::marker{color:var(--accent)}
.article-body blockquote{margin:28px 0;padding:20px 24px;background:rgba(14,17,23,.045);
  border-left:3px solid var(--accent);border-radius:0 var(--r-btn) var(--r-btn) 0;color:rgba(14,17,23,.8)}
.article-body blockquote p{margin:0}
.article-body img{border-radius:var(--r-media);margin:28px auto;max-width:100%}
.article-body figure{margin:28px 0}
.article-body figcaption{margin-top:10px;font-size:13px;color:var(--haze);text-align:center}
.article-body a{color:var(--ink);text-decoration:underline;text-decoration-color:var(--accent);text-underline-offset:3px;
  transition:text-decoration-color 150ms var(--ease),color 150ms var(--ease)}
.article-body a:hover{text-decoration-color:var(--ink)}
.article-body hr{border:0;height:1px;background:var(--line);margin:40px 0}
.article-body code{font-family:var(--font-mono);font-size:14px;background:rgba(14,17,23,.06);padding:2px 6px;border-radius:6px}
.article-body pre{background:var(--ink);color:#E8EAF0;padding:20px 22px;border-radius:var(--r-media);
  overflow-x:auto;font-family:var(--font-mono);font-size:14px;line-height:1.7}
.article-body pre code{background:transparent;color:inherit;padding:0}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:24px 0}
.article-body th,.article-body td{border-bottom:1px solid var(--line);padding:12px 10px;text-align:left}
.article-body thead th{background:rgba(14,17,23,.035);font-weight:600;color:var(--ink)}
.article-body tbody tr{transition:background 150ms var(--ease)}
.article-body tbody tr:hover{background:rgba(18,179,154,.06)}
@media (max-width:767.98px){
  .article-body{padding-top:32px;font-size:16px;line-height:1.8}
  .article-body h2{font-size:21px;margin-top:36px}
  .article-body h3{font-size:18px}
  .article-body > p:first-of-type{font-size:17px;line-height:1.9}
}

/* ---------- 空态 ---------- */
.article-empty{max-width:760px;margin:0 auto;padding:72px 0;text-align:center}
.article-empty svg{margin:0 auto 20px}
.article-empty p{font-size:16px;color:var(--haze);margin-bottom:24px}

/* ---------- 相关推荐 ---------- */
.related{padding:88px 0 0}
.related-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;
  padding-bottom:20px;border-bottom:1px solid var(--line)}
.related-head h2{font-size:32px;line-height:1.3}
.related-head span{font-size:14px;color:var(--haze)}
.rec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:32px}
@media (max-width:991.98px){.rec-grid{grid-template-columns:repeat(2,1fr)}.related{padding-top:64px}}
@media (max-width:767.98px){
  .rec-grid{grid-template-columns:1fr;gap:16px}
  .related{padding-top:48px}
  .related-head h2{font-size:24px}
}

.news-card{display:flex;flex-direction:column;background:var(--paper-2);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;height:100%;
  transition:transform 240ms var(--ease),box-shadow 240ms var(--ease),border-color 240ms var(--ease)}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(18,179,154,.30)}
.card-media{aspect-ratio:3/2;overflow:hidden;background:var(--paper)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform 400ms var(--ease)}
.news-card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.card-title{font-size:18px;line-height:1.5;margin:14px 0 0;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-title a{color:inherit}
.card-desc{margin-top:10px;font-size:14px;line-height:1.71;color:var(--haze);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--haze);font-family:var(--font-mono)}
.card-arrow{transition:transform 240ms var(--ease);color:var(--ink)}
.news-card:hover .card-arrow{transform:translateX(4px);color:var(--accent)}

/* ---------- 返回入口 ---------- */
.back-row{padding:72px 0 104px}
.back-inner{display:flex;flex-wrap:wrap;align-items:center;gap:18px;
  padding-top:32px;border-top:1px solid var(--line)}
.back-inner .hint{font-size:14px;color:var(--haze);margin-right:auto}
.link-plain{font-size:15px;font-weight:600;color:var(--ink);text-decoration:underline;
  text-decoration-color:var(--accent);text-underline-offset:3px;transition:text-decoration-color 150ms var(--ease)}
.link-plain:hover{text-decoration-color:var(--ink)}
@media (max-width:767.98px){
  .back-row{padding:48px 0 64px}
  .back-inner .hint{margin-right:0;width:100%}
}

/* ---------- 页脚 ---------- */
.site-footer{position:relative;background:var(--ink);color:rgba(255,255,255,.78);padding:72px 0 32px;overflow:hidden}
.site-footer::after{content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    radial-gradient(1px 1px at 16% 20%,rgba(255,255,255,.45) 50%,transparent 51%),
    radial-gradient(1px 1px at 74% 12%,rgba(255,255,255,.35) 50%,transparent 51%),
    radial-gradient(1.5px 1.5px at 47% 66%,rgba(255,255,255,.22) 50%,transparent 51%)}
.footer-inner{position:relative;z-index:1}
.footer-brand{display:flex;align-items:center;gap:10px}
.footer-brand-name{display:flex;flex-direction:column;line-height:1.15;font-size:17px;font-weight:700;color:#fff}
.footer-brand-name em{font-style:normal;font-size:11px;font-weight:500;letter-spacing:.14em;color:var(--haze);
  font-family:var(--font-mono);margin-top:3px}
.footer-desc{margin-top:18px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.7);max-width:360px}
.footer-contact{margin-top:20px;display:flex;flex-direction:column;gap:8px;font-size:13px;color:rgba(255,255,255,.58)}
.footer-contact a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.footer-contact a:hover{color:#fff}
.footer-col-title{font-size:13px;font-weight:600;letter-spacing:.08em;color:#fff;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.72);transition:color 150ms var(--ease)}
.footer-links a:hover{color:var(--accent)}
.footer-bottom{margin-top:56px;padding-top:22px;border-top:1px solid var(--line-dark);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:12px;color:rgba(255,255,255,.5)}
@media (max-width:767.98px){
  .site-footer{padding:56px 0 28px}
  .footer-bottom{margin-top:40px}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;
    transition-duration:.01ms!important;scroll-behavior:auto!important}
}

/* roulang page: category1 */
:root{
  --ink:#0E1117;
  --ink-2:#1B2029;
  --paper:#F6F4EF;
  --paper-2:#FFFFFF;
  --accent:#12B39A;
  --accent-ink:#05100E;
  --haze:#8A8FA3;
  --line:rgba(14,17,23,.10);
  --line-dark:rgba(255,255,255,.12);
  --violet:#6C63C9;
  --r-card:16px;
  --r-media:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,17,23,.04), 0 10px 28px -18px rgba(14,17,23,.20);
  --sh-2:0 2px 4px rgba(14,17,23,.06), 0 18px 40px -20px rgba(14,17,23,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --mono:'JetBrains Mono','SFMono-Regular',Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:rgba(14,17,23,.88);
  font-family:'Inter','HarmonyOS Sans SC','PingFang SC','Noto Sans SC','Microsoft YaHei',sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding-left:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
::selection{background:var(--accent);color:var(--accent-ink)}

.container{width:100%;max-width:1240px;margin:0 auto;padding-left:24px;padding-right:24px}
@media (min-width:1400px){.container{max-width:1280px}}
@media (max-width:991px){.container{padding-left:20px;padding-right:20px}}
@media (max-width:767px){.container{padding-left:16px;padding-right:16px}}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:1040;background:rgba(246,244,239,.84);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);transition:background .24s var(--ease),box-shadow .24s var(--ease)}
.site-header.is-scrolled{background:rgba(246,244,239,.95);box-shadow:0 6px 24px -22px rgba(14,17,23,.5)}
.nav-inner{position:relative;height:72px;display:flex;align-items:center;justify-content:center;transition:height .24s var(--ease)}
.site-header.is-scrolled .nav-inner{height:60px}
.nav-side{position:absolute;top:50%;transform:translateY(-50%);display:flex;align-items:center;gap:28px}
.nav-side.left{left:24px}
.nav-right{position:absolute;top:50%;right:24px;transform:translateY(-50%);display:flex;align-items:center;gap:22px}
.nav-link{position:relative;display:inline-block;font-size:15px;font-weight:500;color:rgba(14,17,23,.88);padding:8px 0;transition:color .24s var(--ease)}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:2px;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left center;transition:transform .24s var(--ease)}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink);font-weight:600}
.brand{position:absolute;left:50%;transform:translateX(-50%);display:inline-flex;align-items:center;gap:10px;color:var(--ink)}
.brand-mark{flex:none}
.brand-name{display:flex;flex-direction:column;line-height:1.08;font-size:16px;font-weight:700;letter-spacing:-.01em}
.brand-name em{font-style:normal;font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.16em;color:var(--haze);margin-top:3px}
.btn-ink{display:inline-flex;align-items:center;justify-content:center;height:48px;padding:0 26px;border:1px solid var(--ink);border-radius:var(--r-btn);background:var(--ink);color:#FFFFFF;font-size:15px;font-weight:600;cursor:pointer;transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease)}
.btn-ink:hover{background:var(--accent);border-color:var(--accent);color:var(--accent-ink);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-ink:active{transform:none;box-shadow:none}
.btn-ghost{display:inline-flex;align-items:center;justify-content:center;height:48px;padding:0 26px;border:1px solid var(--line);border-radius:var(--r-btn);background:transparent;color:var(--ink);font-size:15px;font-weight:600;cursor:pointer;transition:color .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease)}
.btn-ghost:hover{color:var(--accent);border-color:var(--accent);transform:translateY(-1px)}
.btn-light{display:inline-flex;align-items:center;justify-content:center;height:48px;padding:0 26px;border:1px solid #FFFFFF;border-radius:var(--r-btn);background:#FFFFFF;color:var(--ink);font-size:15px;font-weight:600;cursor:pointer;transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease)}
.btn-light:hover{background:var(--accent);border-color:var(--accent);color:var(--accent-ink);transform:translateY(-1px)}
.nav-cta{height:42px;padding:0 20px;font-size:14px}
.nav-toggle{display:none;align-items:center;justify-content:center;width:42px;height:42px;border:1px solid var(--line);border-radius:var(--r-btn);background:transparent;cursor:pointer;color:var(--ink);transition:border-color .24s var(--ease),color .24s var(--ease)}
.nav-toggle:hover{border-color:var(--accent);color:var(--accent)}
.nav-toggle span{display:block;width:16px;height:1.5px;background:currentColor;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:16px;height:1.5px;background:currentColor}
.nav-toggle span::before{top:-5px}
.nav-toggle span::after{top:5px}
@media (max-width:991px){
  .nav-inner{justify-content:flex-start;gap:14px}
  .nav-side.left{display:none}
  .nav-right{position:static;transform:none;margin-left:auto;gap:10px}
  .nav-extra{display:none}
  .brand{position:static;transform:none}
  .nav-toggle{display:inline-flex}
  .nav-cta{height:38px;padding:0 14px;font-size:13px}
}
@media (max-width:575px){
  .brand-name{font-size:14px}
  .brand-name em{font-size:10px;letter-spacing:.1em}
  .nav-cta{display:none}
}

/* ---------- mobile offcanvas menu ---------- */
.menu-panel{background:var(--paper);border:none;border-bottom:1px solid var(--line);height:auto;max-height:100vh}
.menu-panel .offcanvas-header{padding:20px 20px 8px;align-items:center}
.menu-title{font-size:16px;font-weight:700;color:var(--ink)}
.menu-title span{display:block;font-family:var(--mono);font-size:10px;letter-spacing:.16em;color:var(--haze);font-weight:500;margin-top:4px}
.menu-close{width:40px;height:40px;border:1px solid var(--line);border-radius:var(--r-btn);background:transparent;color:var(--ink);font-size:20px;line-height:1;cursor:pointer}
.menu-close:hover{border-color:var(--accent);color:var(--accent)}
.menu-panel .offcanvas-body{padding:12px 20px 28px;display:flex;flex-direction:column;gap:24px}
.menu-nav{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.menu-nav a{display:flex;align-items:center;justify-content:space-between;padding:18px 2px;font-size:20px;font-weight:600;color:var(--ink);border-bottom:1px solid var(--line);opacity:0;transform:translateY(-8px);animation:menuIn .4s var(--ease) forwards}
.menu-nav a:nth-child(1){animation-delay:.04s}
.menu-nav a:nth-child(2){animation-delay:.08s}
.menu-nav a:nth-child(3){animation-delay:.12s}
.menu-nav a::after{content:"→";font-size:16px;color:var(--haze)}
.menu-nav a.is-active{color:var(--accent)}
@keyframes menuIn{to{opacity:1;transform:none}}
.menu-foot{display:flex;flex-direction:column;gap:14px}
.menu-foot .btn-ink{width:100%}
.menu-foot span{font-size:13px;color:var(--haze)}

/* ---------- generic blocks ---------- */
.section{padding:96px 0}
.section-tight{padding:64px 0}
.section-dark{background:var(--ink);color:#FFFFFF;position:relative;overflow:hidden}
.stars{position:absolute;inset:0;pointer-events:none;opacity:.5;background-image:radial-gradient(1.5px 1.5px at 12% 28%, rgba(255,255,255,.55), transparent 100%),radial-gradient(1.2px 1.2px at 68% 18%, rgba(255,255,255,.42), transparent 100%),radial-gradient(1.6px 1.6px at 88% 74%, rgba(255,255,255,.48), transparent 100%);background-repeat:no-repeat}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-family:var(--mono);font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--haze);margin-bottom:18px}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--accent)}
.h2{font-size:32px;line-height:1.2;font-weight:700;color:var(--ink);letter-spacing:-.01em}
.h3{font-size:22px;line-height:1.3;font-weight:700;color:var(--ink)}
.lead{font-size:15px;line-height:1.8;color:var(--haze)}
.text-link{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--ink);text-decoration:underline;text-decoration-color:var(--accent);text-underline-offset:3px;transition:color .24s var(--ease),text-decoration-color .24s var(--ease)}
.text-link:hover{text-decoration-color:var(--ink)}
.text-link svg{transition:transform .24s var(--ease)}
.text-link:hover svg{transform:translateX(4px)}
@media (max-width:991px){.section{padding:64px 0}.section-tight{padding:48px 0}.h2{font-size:28px}}
@media (max-width:767px){.section{padding:48px 0}.h2{font-size:24px}.h3{font-size:19px}}

/* ---------- breadcrumb ---------- */
.crumb{font-size:13px;color:var(--haze);display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding-top:28px}
.crumb a{color:var(--haze);transition:color .2s var(--ease)}
.crumb a:hover{color:var(--accent)}
.crumb .sep{opacity:.6}
.crumb .current{color:var(--ink);font-weight:500}

/* ---------- small hero ---------- */
.cat-hero{position:relative;overflow:hidden;padding:36px 0 72px;border-bottom:1px solid var(--line)}
.cat-hero .hero-arc{position:absolute;right:-90px;top:-40px;width:520px;height:520px;color:var(--accent);opacity:.16;pointer-events:none}
.cat-hero-inner{display:grid;grid-template-columns:6fr 5fr;gap:48px;align-items:center;position:relative}
.cat-hero h1{font-size:40px;line-height:1.22;font-weight:700;color:var(--ink);letter-spacing:-.01em;margin:20px 0 18px}
.cat-hero .sub{font-size:18px;line-height:1.7;color:rgba(14,17,23,.7);max-width:30em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-note{display:flex;flex-wrap:wrap;gap:28px;margin-top:34px;padding-top:24px;border-top:1px solid var(--line)}
.hero-note div{display:flex;flex-direction:column;gap:4px}
.hero-note b{font-family:var(--mono);font-size:20px;font-weight:600;color:var(--ink);line-height:1}
.hero-note span{font-size:12px;color:var(--haze);letter-spacing:.02em}
.hero-media{position:relative;border-radius:var(--r-media);overflow:hidden;border:1px solid var(--line)}
.hero-media img{width:100%;aspect-ratio:16/9;object-fit:cover}
@media (max-width:991px){
  .cat-hero{padding:16px 0 56px}
  .cat-hero-inner{grid-template-columns:1fr;gap:32px}
  .cat-hero h1{font-size:32px}
  .cat-hero .hero-arc{width:360px;height:360px;right:-120px}
}
@media (max-width:575px){
  .cat-hero h1{font-size:26px}
  .cat-hero .sub{font-size:16px}
  .hero-actions .btn-ink,.hero-actions .btn-ghost{width:100%}
}

/* ---------- anchor + media rows ---------- */
.anchor-col{position:sticky;top:112px;align-self:flex-start}
.anchor-nav{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.anchor-link{position:relative;display:block;padding:16px 0 16px 16px;font-size:15px;font-weight:500;color:var(--haze);border-bottom:1px solid var(--line);transition:color .24s var(--ease)}
.anchor-link::before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;background:var(--accent);transform:scaleY(0);transform-origin:top;transition:transform .24s var(--ease)}
.anchor-link:hover{color:var(--ink)}
.anchor-link.is-active{color:var(--ink);font-weight:600}
.anchor-link.is-active::before{transform:scaleY(1)}
.anchor-link em{display:block;font-style:normal;font-family:var(--mono);font-size:11px;color:var(--haze);letter-spacing:.1em;margin-bottom:2px}
.media-block{scroll-margin-top:110px}
.media-row{display:grid;grid-template-columns:5fr 6fr;gap:44px;align-items:center;padding:44px 0;border-bottom:1px solid var(--line)}
.media-row:first-child{padding-top:0}
.media-row:last-child{border-bottom:none;padding-bottom:0}
.media-row.reverse{grid-template-columns:6fr 5fr}
.media-row.reverse .media-figure{order:2}
.media-figure{border-radius:var(--r-media);overflow:hidden;border:1px solid var(--line);background:var(--paper)}
.media-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .4s var(--ease)}
.media-row:hover .media-figure img{transform:scale(1.03)}
.media-body p{font-size:15px;line-height:1.8;color:rgba(14,17,23,.72);margin-top:14px}
.media-body p:first-of-type{margin-top:16px}
.media-tag{display:inline-flex;align-items:center;border:1px solid var(--violet);color:var(--violet);border-radius:var(--r-pill);font-size:11px;letter-spacing:.08em;padding:3px 12px;margin-bottom:14px}
@media (max-width:991px){
  .anchor-col{position:sticky;top:72px;z-index:5;background:var(--paper);padding:8px 0 4px;margin-bottom:8px;border-bottom:1px solid var(--line)}
  .anchor-nav{flex-direction:row;overflow-x:auto;gap:8px;border-top:none;scrollbar-width:none}
  .anchor-nav::-webkit-scrollbar{display:none}
  .anchor-link{white-space:nowrap;padding:10px 14px;border:1px solid var(--line);border-radius:var(--r-pill);font-size:14px}
  .anchor-link::before{display:none}
  .anchor-link.is-active{border-color:var(--accent);color:var(--ink)}
  .media-row,.media-row.reverse{grid-template-columns:1fr;gap:24px;padding:36px 0}
  .media-row.reverse .media-figure{order:0}
}

/* ---------- checklist ---------- */
.checklist{display:grid;grid-template-columns:1fr 1fr;gap:0 44px;border-top:1px solid var(--line);margin-top:44px}
.check-item{display:flex;gap:20px;padding:24px 0;border-bottom:1px solid var(--line)}
.check-num{font-family:var(--mono);font-size:14px;font-weight:600;color:var(--accent);padding-top:3px;flex:none}
.check-item h3{font-size:17px;font-weight:600;color:var(--ink);line-height:1.4}
.check-item p{font-size:14px;line-height:1.7;color:var(--haze);margin-top:6px}
@media (max-width:767px){.checklist{grid-template-columns:1fr;gap:0}}

/* ---------- quick check form ---------- */
.quick-check{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:36px 40px;display:grid;grid-template-columns:1fr 1.15fr;gap:40px;align-items:center}
.quick-check h2{font-size:24px;font-weight:700;color:var(--ink);line-height:1.3}
.quick-check p{font-size:14px;line-height:1.75;color:var(--haze);margin-top:10px}
.qc-form{display:grid;grid-template-columns:1fr 1fr auto;gap:16px;align-items:end}
.field{display:flex;flex-direction:column;gap:8px}
.field label{font-size:13px;color:rgba(14,17,23,.7);font-weight:500}
.field input,.field select{height:48px;width:100%;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-btn);background:var(--paper);color:var(--ink);font-size:15px;transition:border-color .24s var(--ease),box-shadow .24s var(--ease),background .24s var(--ease)}
.field input::placeholder{color:var(--haze)}
.field input:hover,.field select:hover{border-color:rgba(14,17,23,.22)}
.field input:focus,.field select:focus{outline:none;background:var(--paper-2);border-color:var(--accent);box-shadow:0 0 0 3px rgba(18,179,154,.18)}
.qc-form .btn-ink{height:48px;white-space:nowrap}
@media (max-width:991px){
  .quick-check{grid-template-columns:1fr;gap:24px;padding:28px 24px}
  .qc-form{grid-template-columns:1fr 1fr;}
  .qc-form .btn-ink{grid-column:1 / -1}
}
@media (max-width:575px){.qc-form{grid-template-columns:1fr}}

/* ---------- stat band ---------- */
.stat-band{padding:72px 0}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);position:relative;z-index:1}
.stat-item{padding:0 28px;border-left:1px solid var(--line-dark)}
.stat-item:first-child{border-left:none;padding-left:0}
.stat-item b{display:block;font-family:var(--mono);font-size:40px;font-weight:600;line-height:1;color:#FFFFFF;letter-spacing:-.02em}
.stat-item b i{font-style:normal;font-size:18px;color:var(--accent);margin-left:4px}
.stat-item span{display:block;font-size:12px;color:rgba(255,255,255,.6);letter-spacing:.06em;margin-top:12px}
@media (max-width:991px){
  .stat-band{padding:56px 0}
  .stat-grid{grid-template-columns:1fr 1fr;gap:32px 0}
  .stat-item:nth-child(3){border-left:none;padding-left:0}
  .stat-item b{font-size:32px}
}
@media (max-width:575px){
  .stat-grid{grid-template-columns:1fr}
  .stat-item{border-left:none;padding:0;padding-bottom:20px;border-bottom:1px solid var(--line-dark)}
  .stat-item:last-child{border-bottom:none;padding-bottom:0}
}

/* ---------- closing cta ---------- */
.closing-cta{display:grid;grid-template-columns:1fr auto;gap:40px;align-items:center;border-top:1px solid var(--line);padding-top:48px}
.closing-cta h2{font-size:28px;font-weight:700;color:var(--ink);line-height:1.3}
.closing-cta p{font-size:15px;line-height:1.75;color:var(--haze);margin-top:12px;max-width:44em}
.closing-actions{display:flex;gap:14px;flex-wrap:wrap;justify-content:flex-end}
@media (max-width:991px){
  .closing-cta{grid-template-columns:1fr;gap:24px}
  .closing-actions{justify-content:flex-start}
  .closing-actions .btn-ink,.closing-actions .btn-ghost{width:100%}
}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:#FFFFFF;position:relative;overflow:hidden;padding-top:1px}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--line-dark)}
.footer-inner{position:relative;padding:72px 0 0}
.footer-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:20px}
.footer-brand-name{display:flex;flex-direction:column;line-height:1.08;font-size:16px;font-weight:700;color:#FFFFFF;letter-spacing:-.01em}
.footer-brand-name em{font-style:normal;font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.16em;color:rgba(255,255,255,.5);margin-top:3px}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.68);max-width:30em}
.footer-contact{display:flex;flex-direction:column;gap:10px;margin-top:24px;font-size:13px;color:rgba(255,255,255,.6)}
.footer-contact a{color:var(--accent);text-decoration:underline;text-underline-offset:3px;width:fit-content}
.footer-contact a:hover{color:#FFFFFF}
.footer-col-title{font-size:12px;letter-spacing:.14em;color:rgba(255,255,255,.5);font-family:var(--mono);text-transform:uppercase;margin-bottom:18px}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.82);transition:color .24s var(--ease),transform .24s var(--ease);width:fit-content}
.footer-links a:hover{color:var(--accent);transform:translateX(3px)}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;margin-top:64px;padding:24px 0 32px;border-top:1px solid var(--line-dark);font-size:13px;color:rgba(255,255,255,.5)}
@media (max-width:991px){
  .footer-inner{padding-top:52px}
  .footer-bottom{margin-top:44px;flex-direction:column}
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .4s var(--ease),transform .4s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  .reveal{opacity:1;transform:none}
  .menu-nav a{opacity:1;transform:none;animation:none}
}

/* roulang page: category2 */
:root{
  --ink:#0E1117;
  --ink-2:#1B2029;
  --paper:#F6F4EF;
  --paper-2:#FFFFFF;
  --accent:#12B39A;
  --accent-ink:#05100E;
  --haze:#8A8FA3;
  --line:rgba(14,17,23,.10);
  --line-dark:rgba(255,255,255,.12);
  --violet:#6C63C9;
  --r-card:16px;
  --r-media:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,17,23,.04),0 10px 28px -18px rgba(14,17,23,.20);
  --sh-2:0 2px 4px rgba(14,17,23,.06),0 18px 40px -20px rgba(14,17,23,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-cn:'Inter','HarmonyOS Sans SC','PingFang SC','Noto Sans SC','Microsoft YaHei',sans-serif;
  --font-mono:'JetBrains Mono','SFMono-Regular',Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:rgba(14,17,23,.88);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--ink);text-decoration:none;}
p{margin:0 0 20px;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.2;letter-spacing:-0.01em;color:var(--ink);}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
  border-radius:4px;
}
.mono{font-family:var(--font-mono);font-weight:600;letter-spacing:-0.02em;}

.container{max-width:1240px;width:100%;padding-left:16px;padding-right:16px;}
@media (min-width:768px){.container{padding-left:20px;padding-right:20px;}}
@media (min-width:992px){.container{padding-left:24px;padding-right:24px;}}
@media (min-width:1400px){.container{max-width:1280px;}}

/* ---------- 按钮 ---------- */
.btn-ink,.btn-ghost,.btn-light{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:0;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease);
}
.btn-ink{background:var(--ink);color:#fff;}
.btn-ink:hover{background:var(--accent);color:var(--accent-ink);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-ink:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line);}
.btn-ghost:hover{color:var(--accent);border-color:var(--accent);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-light{background:#fff;color:var(--ink);}
.btn-light:hover{background:var(--accent);color:var(--accent-ink);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-light:active{transform:translateY(0);}
@media (max-width:767.98px){
  .btn-ink,.btn-ghost,.btn-light{height:44px;padding:0 22px;font-size:14px;}
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(246,244,239,0);
  border-bottom:1px solid transparent;
  transition:background .24s var(--ease),border-color .24s var(--ease),backdrop-filter .24s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(246,244,239,.86);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  position:relative;display:flex;align-items:center;gap:24px;
  height:72px;transition:height .24s var(--ease);
}
.site-header.is-scrolled .header-inner{height:60px;}
.nav-side{display:flex;align-items:center;gap:28px;flex:1 1 0;min-width:0;}
.nav-side.right{justify-content:flex-end;gap:20px;}
.site-header .nav-link{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:15px;font-weight:500;
  color:rgba(14,17,23,.88);
  background:none;border:0;
  transition:color .24s var(--ease);
}
.site-header .nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);
}
.site-header .nav-link:hover{color:var(--ink);}
.site-header .nav-link:hover::after,
.site-header .nav-link.is-active::after{transform:scaleX(1);}
.site-header .nav-link.is-active{color:var(--ink);font-weight:600;}

.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;}
.site-header .brand{position:absolute;left:50%;transform:translateX(-50%);}
.brand-mark{flex:none;}
.brand-text{display:flex;flex-direction:column;line-height:1;}
.brand-name{font-size:17px;font-weight:700;letter-spacing:-0.01em;color:var(--ink);}
.brand-latin{font-size:11px;letter-spacing:.14em;color:var(--haze);margin-top:4px;text-transform:uppercase;}

.nav-cta{height:40px;padding:0 20px;font-size:14px;}
.nav-toggle{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  background:transparent;border:1px solid var(--line);border-radius:var(--r-btn);
  color:var(--ink);cursor:pointer;transition:border-color .24s var(--ease),color .24s var(--ease);
}
.nav-toggle:hover{border-color:var(--accent);color:var(--accent);}

@media (max-width:991.98px){
  .nav-side.left{display:none;}
  .nav-side.right{gap:12px;}
  .site-header .nav-link{display:none;}
  .site-header .brand{position:static;transform:none;margin-right:auto;}
  .nav-toggle{display:inline-flex;}
}
@media (max-width:575.98px){
  .brand-latin{display:none;}
  .brand-name{font-size:15px;}
  .brand-mark{width:24px;height:24px;}
  .nav-cta{height:38px;padding:0 14px;font-size:13px;}
}

/* 移动端下拉菜单 */
.offcanvas.site-menu{
  background:var(--paper);
  color:var(--ink);
  border:0;
  height:100vh;
  max-height:100vh;
  box-shadow:0 24px 48px -24px rgba(14,17,23,.30);
}
.site-menu .offcanvas-header{
  padding:16px 20px;
  border-bottom:1px solid var(--line);
  align-items:center;
}
.site-menu .offcanvas-title{font-size:15px;font-weight:600;color:var(--haze);letter-spacing:.02em;}
.site-menu .btn-close{opacity:.6;filter:none;}
.site-menu .btn-close:hover{opacity:1;}
.site-menu .offcanvas-body{
  padding:8px 20px 32px;
  display:flex;flex-direction:column;
}
.site-menu .menu-link{
  font-size:20px;font-weight:600;color:var(--ink);
  padding:18px 0;border-bottom:1px solid var(--line);
  opacity:0;transform:translateY(-8px);
  animation:menuIn .4s var(--ease) forwards;
}
.site-menu .menu-link.is-active{color:var(--accent);}
.site-menu .menu-link:nth-child(1){animation-delay:.04s;}
.site-menu .menu-link:nth-child(2){animation-delay:.08s;}
.site-menu .menu-link:nth-child(3){animation-delay:.12s;}
.site-menu .menu-foot{
  margin-top:auto;padding-top:28px;
  display:flex;flex-direction:column;gap:10px;
}
.site-menu .menu-foot p{font-size:13px;line-height:1.7;color:var(--haze);margin:0;}
@keyframes menuIn{to{opacity:1;transform:translateY(0);}}

/* ---------- 通栏大标题区 ---------- */
.page-hero{
  padding:64px 0 48px;
  background:var(--paper);
  border-bottom:1px solid var(--line);
}
.page-hero-inner{
  display:flex;align-items:flex-end;justify-content:space-between;gap:48px;
}
.page-hero-text{max-width:760px;}
.eyebrow{
  display:inline-block;
  font-size:12px;font-weight:600;letter-spacing:.14em;
  color:var(--violet);
  border:1px solid rgba(108,99,201,.42);
  border-radius:var(--r-pill);
  padding:5px 14px;
  margin:0 0 22px;
  background:transparent;
}
.page-hero h1{
  font-size:40px;
  line-height:1.22;
  margin-bottom:18px;
  max-width:19em;
}
.page-hero-sub{
  font-size:18px;line-height:1.7;color:rgba(14,17,23,.70);
  margin:0;max-width:34em;
}
.page-hero-actions{display:flex;gap:12px;flex:none;padding-bottom:6px;}
@media (max-width:991.98px){
  .page-hero{padding:48px 0 40px;}
  .page-hero-inner{flex-direction:column;align-items:flex-start;gap:28px;}
  .page-hero h1{font-size:32px;max-width:none;}
  .page-hero-sub{font-size:16px;}
}
@media (max-width:575.98px){
  .page-hero{padding:36px 0 32px;}
  .page-hero h1{font-size:26px;}
  .page-hero-actions{width:100%;flex-direction:column;}
  .page-hero-actions .btn-ink,
  .page-hero-actions .btn-ghost{width:100%;}
}

/* ---------- 区块标题 ---------- */
.section-head{max-width:720px;margin-bottom:48px;}
.section-head h2{font-size:32px;margin-bottom:14px;}
.section-head p{font-size:16px;line-height:1.75;color:var(--haze);margin:0;}
@media (max-width:767.98px){
  .section-head{margin-bottom:32px;}
  .section-head h2{font-size:24px;}
}

/* ---------- 四宫格内容卡 ---------- */
.quad-section{padding:96px 0;}
.quad-card{
  height:100%;
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:34px 30px 32px;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.quad-card:hover{
  transform:translateY(-3px);
  box-shadow:var(--sh-2);
  border-color:rgba(18,179,154,.30);
}
.quad-icon{
  width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);
  border-radius:12px;
  margin-bottom:22px;
}
.quad-card h3{font-size:20px;margin-bottom:12px;}
.quad-card p{font-size:15px;line-height:1.75;color:var(--haze);margin:0;}
.quad-num{
  display:block;
  font-family:var(--font-mono);font-size:12px;font-weight:600;
  color:var(--accent);letter-spacing:.08em;margin-bottom:16px;
}
@media (max-width:767.98px){
  .quad-section{padding:56px 0;}
  .quad-card{padding:26px 22px 24px;}
}

/* ---------- 步骤时间线 ---------- */
.steps-section{padding:0 0 96px;}
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0 32px;
  border-top:0;
}
.step{position:relative;padding:34px 0 0;}
.step::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:var(--line);
}
.step.is-active::before{background:var(--accent);height:2px;}
.step-num{
  display:block;font-family:var(--font-mono);font-size:14px;font-weight:600;
  color:var(--haze);letter-spacing:.08em;margin-bottom:14px;
}
.step.is-active .step-num{color:var(--accent);}
.step h3{font-size:19px;margin-bottom:10px;}
.step p{font-size:14px;line-height:1.75;color:var(--haze);margin:0;}
@media (max-width:991.98px){
  .steps{grid-template-columns:repeat(2,1fr);gap:0 28px;}
  .step{padding-top:28px;margin-bottom:36px;}
}
@media (max-width:767.98px){
  .steps-section{padding:0 0 56px;}
  .steps{grid-template-columns:1fr;gap:0;}
  .step{padding:0 0 0 26px;margin-bottom:30px;min-height:76px;}
  .step::before{top:0;left:0;right:auto;bottom:0;width:1px;height:auto;}
  .step:last-child::before{bottom:auto;height:100%;}
}

/* 样片带 */
.shot-strip{
  margin-top:24px;
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.shot-strip figure{margin:0;}
.shot-strip .shot-media{
  position:relative;
  aspect-ratio:4/3;
  border-radius:var(--r-media);
  overflow:hidden;
  background:var(--paper-2);
  border:1px solid var(--line);
}
.shot-strip img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .4s var(--ease);
}
.shot-strip figure:hover img{transform:scale(1.03);}
.shot-strip figcaption{
  margin-top:12px;
  font-size:12px;line-height:1.6;color:var(--haze);
  display:flex;gap:10px;align-items:baseline;
}
.shot-strip figcaption .mono{color:var(--ink);font-size:12px;}
@media (max-width:767.98px){
  .shot-strip{grid-template-columns:1fr;gap:20px;margin-top:8px;}
}

/* ---------- FAQ ---------- */
.faq-section{padding:0 0 96px;}
.faq .accordion-item{
  background:transparent;
  border:0;
  border-top:1px solid var(--line);
  border-radius:0;
}
.faq .accordion-item:last-child{border-bottom:1px solid var(--line);}
.faq .accordion-header{background:transparent;}
.faq .accordion-button{
  position:relative;
  background:transparent;
  color:var(--ink);
  font-size:18px;font-weight:600;
  line-height:1.5;
  padding:24px 46px 24px 44px;
  border:0;border-radius:0;
  box-shadow:none;
  display:flex;align-items:center;
  transition:color .24s var(--ease);
}
.faq .accordion-button::before{
  content:attr(data-num);
  position:absolute;left:0;top:50%;transform:translateY(-50%);
  font-family:var(--font-mono);font-size:13px;font-weight:600;
  color:var(--haze);letter-spacing:.06em;
}
.faq .accordion-button::after{
  position:absolute;right:2px;top:50%;
  width:16px;height:16px;
  margin:0;transform:translateY(-50%);
  background-image:
    linear-gradient(var(--ink),var(--ink)),
    linear-gradient(var(--ink),var(--ink));
  background-position:center,center;
  background-size:16px 1.5px,1.5px 16px;
  background-repeat:no-repeat;
  transition:transform .24s var(--ease),background-image .24s var(--ease);
}
.faq .accordion-button:not(.collapsed){
  background:transparent;
  color:var(--ink);
  box-shadow:none;
}
.faq .accordion-button:not(.collapsed)::after{
  transform:translateY(-50%) rotate(45deg);
  background-image:
    linear-gradient(var(--accent),var(--accent)),
    linear-gradient(var(--accent),var(--accent));
}
.faq .accordion-button:focus{
  box-shadow:0 0 0 2px rgba(18,179,154,.35);
  z-index:3;
}
.faq .accordion-button:hover{color:var(--accent);}
.faq .accordion-body{
  padding:0 46px 28px 44px;
  font-size:15px;line-height:1.85;
  color:rgba(14,17,23,.80);
}
.faq .accordion-body p:last-child{margin-bottom:0;}
@media (max-width:767.98px){
  .faq-section{padding:0 0 56px;}
  .faq .accordion-button{font-size:16px;padding:20px 40px 20px 36px;}
  .faq .accordion-body{padding:0 40px 22px 36px;font-size:14px;}
}

/* ---------- CTA 条 ---------- */
.cta-band{
  position:relative;
  background:var(--ink);
  color:#fff;
  overflow:hidden;
  padding:80px 0;
}
.cta-band::before{
  content:"";
  position:absolute;inset:0;
  pointer-events:none;
  opacity:.5;
  background-image:
    radial-gradient(circle at 12% 24%, rgba(255,255,255,.45) 1px, transparent 1.4px),
    radial-gradient(circle at 76% 66%, rgba(255,255,255,.32) 1px, transparent 1.4px),
    radial-gradient(circle at 44% 86%, rgba(255,255,255,.28) 1px, transparent 1.4px);
  background-size:260px 200px,380px 300px,300px 240px;
  background-repeat:repeat;
}
.cta-inner{
  position:relative;
  z-index:1;
  display:flex;flex-direction:column;align-items:center;
  text-align:center;
  gap:16px;
}
.cta-inner h2{color:#fff;font-size:32px;max-width:22em;}
.cta-inner p{color:rgba(255,255,255,.72);font-size:16px;margin:0;max-width:36em;}
.cta-inner .btn-light{margin-top:14px;}
.cta-band .cta-note{
  margin-top:6px;
  font-size:12px;letter-spacing:.06em;color:rgba(255,255,255,.48);
  font-family:var(--font-mono);
}
@media (max-width:767.98px){
  .cta-band{padding:56px 0;}
  .cta-inner h2{font-size:24px;}
  .cta-inner p{font-size:15px;}
}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  background:var(--ink);
  color:rgba(255,255,255,.80);
  padding:72px 0 28px;
  border-top:1px solid var(--line-dark);
}
.site-footer::before{
  content:"";
  position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.22),transparent);
}
.site-footer::after{
  content:"";
  position:absolute;top:0;left:0;right:0;height:120px;
  pointer-events:none;opacity:.42;
  background-image:
    radial-gradient(circle at 8% 30%, rgba(255,255,255,.4) 1px, transparent 1.4px),
    radial-gradient(circle at 62% 18%, rgba(255,255,255,.3) 1px, transparent 1.4px);
  background-size:300px 160px,420px 200px;
}
.site-footer .container{position:relative;z-index:1;}
.site-footer .brand{position:static;transform:none;}
.footer-brand-name{
  display:inline-flex;flex-direction:column;
  font-size:18px;font-weight:700;color:#fff;line-height:1.1;
}
.footer-brand-name em{
  font-style:normal;font-size:11px;letter-spacing:.14em;
  color:rgba(255,255,255,.42);margin-top:6px;text-transform:uppercase;
}
.footer-desc{
  margin:22px 0 0;
  font-size:14px;line-height:1.8;
  color:rgba(255,255,255,.62);
  max-width:30em;
}
.footer-contact{display:flex;flex-direction:column;gap:8px;margin-top:22px;}
.footer-contact span{font-size:13px;color:rgba(255,255,255,.55);}
.footer-contact a{
  font-size:13px;color:var(--accent);width:fit-content;
  text-decoration:underline;text-underline-offset:3px;
  transition:color .24s var(--ease);
}
.footer-contact a:hover{color:#fff;}
.footer-col-title{
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:rgba(255,255,255,.50);
  margin:0 0 18px;
}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{
  font-size:14px;color:rgba(255,255,255,.80);
  width:fit-content;
  transition:color .24s var(--ease),transform .24s var(--ease);
}
.footer-links a:hover{color:var(--accent);transform:translateX(2px);}
.footer-bottom{
  margin-top:56px;
  padding-top:22px;
  border-top:1px solid var(--line-dark);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;line-height:1.7;
  color:rgba(255,255,255,.45);
}
@media (max-width:767.98px){
  .site-footer{padding:52px 0 24px;}
  .footer-bottom{margin-top:36px;flex-direction:column;gap:8px;}
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .quad-card:hover{transform:none;}
  .shot-strip figure:hover img{transform:none;}
}