/* roulang page: index */
:root{
  --ink:#14161A;--ink-2:#2A2D33;--graphite:#6E7278;--paper:#F6F5F1;--paper-2:#EFEDE7;
  --dark:#0F1013;--accent:#D9F94F;--accent-ink:#14161A;--warn:#FF5A1F;
  --line:rgba(20,22,26,.10);--line-dark:rgba(255,255,255,.12);
  --r-card:20px;--r-lg:28px;--r-pill:999px;
  --sh-1:0 1px 2px rgba(20,22,26,.05),0 12px 32px -20px rgba(20,22,26,.20);
  --sh-2:0 2px 6px rgba(20,22,26,.06),0 24px 60px -28px rgba(20,22,26,.28);
  --ease:cubic-bezier(.22,.61,.36,1);--dur:260ms;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--paper);color:var(--ink-2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16.5px;line-height:1.8;letter-spacing:.005em;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:800;letter-spacing:-.02em;line-height:1.24}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(217,249,79,.85);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 32px}}
@media(min-width:1024px){.container{padding:0 48px}}

/* ---------- section rhythm ---------- */
.section{padding:64px 0}
@media(min-width:1024px){.section{padding:112px 0}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:40px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.14em;color:var(--graphite);text-transform:uppercase;margin-bottom:14px}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--accent);display:inline-block}
.section-title{font-size:clamp(1.55rem,3vw,2.3rem);max-width:720px}
.section-sub{color:var(--graphite);font-size:15.5px;max-width:620px;margin-top:12px}

/* ---------- dock nav ---------- */
.dock-wrap{position:fixed;top:16px;left:0;right:0;z-index:60;display:flex;justify-content:center;pointer-events:none}
.dock{
  pointer-events:auto;width:min(1120px,92vw);display:flex;align-items:center;gap:18px;
  padding:10px 12px 10px 16px;border-radius:var(--r-pill);border:1px solid var(--line);
  background:rgba(246,245,241,.74);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--sh-1);transition:width var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease);
}
.dock.is-scrolled{width:min(1052px,88vw);box-shadow:var(--sh-2);background:rgba(246,245,241,.9)}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:34px;height:34px;border-radius:11px;background:var(--ink);display:grid;place-items:center;position:relative;overflow:hidden}
.brand-mark::after{content:"";position:absolute;inset:8px 9px 8px auto;width:5px;border-radius:3px;background:var(--accent)}
.brand-mark span{color:var(--paper);font-size:14px;font-weight:800;padding-right:8px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-size:15px;font-weight:800;color:var(--ink);letter-spacing:-.01em}
.brand-text i{font-style:normal;font-size:11px;letter-spacing:.12em;color:var(--graphite)}
.nav-links{display:none;align-items:center;gap:4px;margin-left:auto}
@media(min-width:900px){.nav-links{display:flex}}
.nav-links a{position:relative;padding:9px 13px;border-radius:var(--r-pill);font-size:14px;color:var(--ink-2);letter-spacing:.02em;transition:color var(--dur) var(--ease),background var(--dur) var(--ease)}
.nav-links a::after{content:"";position:absolute;left:13px;right:13px;bottom:5px;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform var(--dur) var(--ease)}
.nav-links a:hover{color:var(--ink);background:rgba(20,22,26,.04)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--ink);font-weight:700;background:rgba(217,249,79,.24)}
.nav-links a.active::after{transform:scaleX(1)}
.dock-actions{display:flex;align-items:center;gap:8px;margin-left:auto}
@media(min-width:900px){.dock-actions{margin-left:0}}
.icon-btn{width:40px;height:40px;border-radius:var(--r-pill);border:1px solid var(--line);display:grid;place-items:center;color:var(--ink);transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease)}
.icon-btn:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-pill);font-weight:700;letter-spacing:.01em;transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease)}
.btn-primary{background:var(--accent);color:var(--accent-ink);padding:12px 22px;font-size:15px}
.btn-primary:hover{background:var(--ink);color:var(--accent);transform:translateY(-2px)}
.btn-ghost{border:1.5px solid var(--ink);color:var(--ink);padding:11px 21px;font-size:15px;background:transparent}
.btn-ghost:hover{background:var(--ink);color:var(--paper);transform:translateY(-2px)}
.btn-sm{padding:9px 16px;font-size:14px}
.link-cta{position:relative;display:inline-flex;align-items:center;gap:8px;font-weight:700;color:var(--ink);font-size:15px;padding-bottom:4px}
.link-cta::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:100%;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform var(--dur) var(--ease)}
.link-cta:hover::after{transform:scaleX(1)}
.mobile-dock{position:fixed;left:0;right:0;bottom:0;z-index:60;display:flex;align-items:center;justify-content:space-around;gap:6px;padding:8px 12px calc(8px + env(safe-area-inset-bottom));background:rgba(246,245,241,.94);backdrop-filter:blur(12px);border-top:1px solid var(--line)}
@media(min-width:768px){.mobile-dock{display:none}}
.mobile-dock a,.mobile-dock button{display:flex;flex-direction:column;align-items:center;gap:3px;font-size:11.5px;color:var(--graphite);padding:4px 8px;border-radius:12px}
.mobile-dock a.active{color:var(--ink);font-weight:700}
.mobile-dock .dot{width:5px;height:5px;border-radius:50%;background:var(--accent);opacity:0}
.mobile-dock a.active .dot{opacity:1}

/* ---------- hero ---------- */
.hero{position:relative;background:var(--dark);color:var(--paper);padding:132px 0 76px;overflow:hidden}
@media(min-width:1024px){.hero{padding:176px 0 112px}}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(0deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:64px 64px;mask-image:radial-gradient(circle at 70% 20%,#000,transparent 72%);opacity:.7;pointer-events:none}
.hero-grid{position:relative;display:grid;gap:44px}
@media(min-width:1024px){.hero-grid{grid-template-columns:6fr 6fr;align-items:center;gap:56px}}
.hero h1{color:#fff;font-size:clamp(2.2rem,5vw,3.6rem);line-height:1.12}
.hero h1 .hl{position:relative;white-space:nowrap}
.hero h1 .hl::after{content:"";position:absolute;left:0;right:0;bottom:.06em;height:.18em;background:rgba(217,249,79,.5);z-index:-1;border-radius:2px}
.hero-sub{color:rgba(246,245,241,.72);font-size:17px;margin-top:20px;max-width:560px}
.hero-btns{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
@media(max-width:520px){.hero-btns{flex-direction:column}.hero-btns .btn{width:100%}}
.hero .btn-ghost{border-color:rgba(246,245,241,.5);color:var(--paper)}
.hero .btn-ghost:hover{background:var(--paper);color:var(--ink);border-color:var(--paper)}
.trust-bar{position:relative;margin-top:44px;padding-top:24px;border-top:1px solid var(--line-dark);display:grid;grid-template-columns:repeat(2,1fr);gap:20px 12px}
@media(min-width:768px){.trust-bar{grid-template-columns:repeat(4,1fr);gap:0}}
.trust-item{padding-right:16px}
@media(min-width:768px){.trust-item{border-right:1px solid var(--line-dark);padding-left:20px}.trust-item:first-child{padding-left:0}.trust-item:last-child{border-right:none}}
.trust-num{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:26px;font-weight:700;color:var(--accent);letter-spacing:.01em}
.trust-label{font-size:13px;letter-spacing:.04em;color:rgba(246,245,241,.6);margin-top:2px}
.hero-media{position:relative}
.hero-img{border-radius:var(--r-lg);border:1px solid var(--line-dark);overflow:hidden;aspect-ratio:16/10;background:#1b1d21}
.hero-img img{width:100%;height:100%;object-fit:cover}
.float-card{position:absolute;right:-6px;bottom:-22px;width:62%;max-width:280px;background:var(--paper);border-radius:16px;border:1px solid var(--line);box-shadow:var(--sh-2);padding:14px;display:flex;gap:12px;align-items:center;animation:floaty 5.5s ease-in-out infinite}
.float-card img{width:56px;height:56px;border-radius:12px;object-fit:cover;flex:0 0 auto}
.float-card b{display:block;font-size:14px;color:var(--ink)}
.float-card span{font-size:12.5px;color:var(--graphite)}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
@media(prefers-reduced-motion:reduce){.float-card{animation:none}}

/* ---------- value ---------- */
.value-grid{display:grid;gap:36px}
@media(min-width:1024px){.value-grid{grid-template-columns:5fr 7fr;gap:64px;align-items:start}}
.value-list{display:grid;gap:0}
.value-item{display:grid;grid-template-columns:56px 1fr;gap:18px;padding:24px 0;border-top:1px solid var(--line)}
.value-item:last-child{border-bottom:1px solid var(--line)}
.value-idx{font-family:ui-monospace,monospace;font-size:14px;font-weight:700;color:var(--graphite);letter-spacing:.06em;padding-top:4px}
.value-item h3{font-size:18px;margin-bottom:6px}
.value-item p{color:var(--graphite);font-size:15.5px}

/* ---------- zigzag features ---------- */
.zigzag{display:grid;gap:32px;align-items:center}
@media(min-width:900px){.zigzag{grid-template-columns:5fr 7fr;gap:56px}.zigzag.reverse .zig-media{order:2}.zigzag.reverse .zig-body{order:1}}
.zig-media{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-1);aspect-ratio:16/10;background:var(--paper-2)}
.zig-media img{width:100%;height:100%;object-fit:cover}
.zig-body h3{font-size:clamp(1.2rem,2.2vw,1.6rem);margin-bottom:12px}
.zig-body p{color:var(--graphite);max-width:560px}
.check-list{display:grid;gap:10px;margin-top:18px}
.check-list li{position:relative;padding-left:26px;font-size:15.5px;color:var(--ink-2)}
.check-list li::before{content:"";position:absolute;left:0;top:11px;width:9px;height:9px;background:var(--accent);border-radius:2px}
.zig-stack{display:grid;gap:64px}
@media(min-width:1024px){.zig-stack{gap:96px}}

/* ---------- scenes ---------- */
.scene-tabs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px}
.scene-tab{padding:10px 18px;border-radius:var(--r-pill);border:1px solid var(--line);background:#fff;font-size:14px;color:var(--ink-2);transition:all var(--dur) var(--ease)}
.scene-tab:hover{border-color:var(--ink)}
.scene-tab[aria-selected="true"]{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.scene-panel{display:none;grid-template-columns:1fr;gap:32px;align-items:center}
@media(min-width:900px){.scene-panel{grid-template-columns:7fr 5fr;gap:48px}}
.scene-panel.is-active{display:grid}
.scene-panel .zig-media{order:2}
.scene-panel h3{font-size:1.45rem;margin-bottom:12px}
.scene-steps{display:grid;gap:14px;margin-top:20px;counter-reset:s}
.scene-steps li{position:relative;padding-left:44px;color:var(--ink-2);font-size:15.5px}
.scene-steps li::before{counter-increment:s;content:counter(s,decimal-leading-zero);position:absolute;left:0;top:2px;font-family:ui-monospace,monospace;font-size:13px;font-weight:700;color:var(--ink);background:rgba(217,249,79,.4);border-radius:8px;padding:3px 8px}

/* ---------- cases ---------- */
.case-main{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);padding:32px;display:grid;gap:20px}
@media(min-width:900px){.case-main{padding:48px}}
.case-quote{font-size:clamp(1.1rem,2.4vw,1.6rem);color:var(--ink);font-weight:700;line-height:1.5}
.case-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:13px;color:var(--graphite);letter-spacing:.04em}
.case-sub-grid{display:grid;gap:20px;margin-top:24px}
@media(min-width:768px){.case-sub-grid{grid-template-columns:1fr 1fr}}
.case-sub{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease)}
.case-sub:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--ink)}
.case-sub h3{font-size:16.5px;margin-bottom:8px}
.case-sub p{font-size:15px;color:var(--graphite)}

/* ---------- pricing ---------- */
.price-grid{display:grid;gap:22px}
@media(min-width:900px){.price-grid{grid-template-columns:1fr 1.2fr 1fr;align-items:start;gap:24px}}
.price-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:28px;box-shadow:var(--sh-1);display:flex;flex-direction:column;gap:16px;transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease)}
.price-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--ink)}
.price-card.featured{border:1.5px solid var(--accent);box-shadow:var(--sh-2)}
@media(min-width:900px){.price-card.featured{transform:translateY(-24px)}.price-card.featured:hover{transform:translateY(-26px)}}
.price-card .tier{font-size:13px;letter-spacing:.1em;color:var(--graphite);text-transform:uppercase}
.price-card h3{font-size:20px}
.price-card .who{font-size:14.5px;color:var(--graphite)}
.price-card .amount{font-family:ui-monospace,monospace;font-size:26px;font-weight:700;color:var(--ink)}
.price-card ul{display:grid;gap:9px}
.price-card ul li{position:relative;padding-left:22px;font-size:14.5px;color:var(--ink-2)}
.price-card ul li::before{content:"";position:absolute;left:0;top:9px;width:9px;height:2px;background:var(--accent)}
.price-note{font-size:12.5px;color:var(--graphite);border-top:1px solid var(--line);padding-top:12px;margin-top:auto}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:13px;letter-spacing:.04em;padding:5px 12px;border-radius:var(--r-pill);border:1px solid var(--line);background:rgba(217,249,79,.24);color:var(--ink)}
.badge.solid{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.badge.warn{background:rgba(255,90,31,.12);border-color:rgba(255,90,31,.35);color:#B23707}
.badge.outline{background:transparent;color:var(--graphite)}

/* ---------- news / cms ---------- */
.news-block{background:var(--paper-2)}
.news-grid{display:grid;gap:22px}
@media(min-width:1024px){.news-grid{grid-template-columns:1.35fr 1fr;gap:24px;align-items:start}}
.news-lead,.news-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);display:flex;flex-direction:column}
.news-lead:hover,.news-item:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--ink)}
.news-thumb{aspect-ratio:16/10;background:var(--paper-2);overflow:hidden}
.news-lead .news-thumb{aspect-ratio:16/8}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--dur) var(--ease)}
.news-lead:hover .news-thumb img,.news-item:hover .news-thumb img{transform:scale(1.02)}
.news-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.news-title{font-size:17px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color var(--dur) var(--ease)}
.news-lead .news-title{font-size:clamp(1.1rem,2.2vw,1.45rem)}
.news-item:hover .news-title,.news-lead:hover .news-title{color:var(--ink);text-decoration:underline;text-decoration-color:var(--accent);text-decoration-thickness:2px;text-underline-offset:4px}
.news-excerpt{font-size:14.8px;color:var(--graphite);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-list{display:grid;gap:18px}
.news-empty{background:#fff;border:1px dashed var(--line);border-radius:var(--r-card);padding:48px 24px;text-align:center;color:var(--graphite)}
.news-empty svg{margin:0 auto 14px}

/* ---------- faq ---------- */
.faq-block{background:var(--paper-2)}
.faq-shell{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);overflow:hidden}
.faq-item + .faq-item{border-top:1px solid var(--line)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;text-align:left;padding:22px 24px;font-size:17px;font-weight:700;color:var(--ink);transition:background var(--dur) var(--ease)}
.faq-q:hover{background:rgba(20,22,26,.03)}
.faq-icon{position:relative;width:18px;height:18px;flex:0 0 auto}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--ink);transition:transform 300ms var(--ease),opacity 300ms var(--ease)}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-item.open .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-item.open .faq-icon{transform:rotate(180deg);transition:transform 300ms var(--ease)}
.faq-a{max-height:0;overflow:hidden;opacity:0;transition:max-height 320ms var(--ease),opacity 300ms var(--ease)}
.faq-a-inner{padding:0 24px 24px;font-size:15px;line-height:1.85;color:var(--graphite)}
.faq-item.open .faq-a{opacity:1}

/* ---------- cta ---------- */
.cta-band{position:relative;background:var(--dark);color:var(--paper);padding:72px 0;overflow:hidden}
@media(min-width:1024px){.cta-band{padding:96px 0}}
.cta-band::before{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(90deg,rgba(255,255,255,.05) 0 1px,transparent 1px 72px);opacity:.6}
.cta-inner{position:relative;display:grid;gap:26px;justify-items:start}
.cta-inner h2{color:#fff;font-size:clamp(1.7rem,4vw,2.9rem);max-width:760px}
.cta-inner p{color:rgba(246,245,241,.68);max-width:620px}
.cta-btns{display:flex;flex-wrap:wrap;gap:12px}
@media(max-width:520px){.cta-btns{flex-direction:column;width:100%}.cta-btns .btn{width:100%}}
.cta-band .btn-ghost{border-color:rgba(246,245,241,.5);color:var(--paper)}
.cta-band .btn-ghost:hover{background:var(--paper);color:var(--ink);border-color:var(--paper)}

/* ---------- form ---------- */
.form-grid{display:grid;gap:16px}
@media(min-width:640px){.form-grid{grid-template-columns:1fr 1fr}}
.field{display:grid;gap:8px}
.field label{font-size:13px;letter-spacing:.04em;color:var(--graphite)}
.field input,.field select,.field textarea{height:48px;border:1px solid var(--line);border-radius:12px;padding:0 16px;background:#fff;color:var(--ink);font-size:15px;transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease)}
.field textarea{height:auto;min-height:120px;padding:14px 16px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--ink);box-shadow:0 0 0 3px rgba(217,249,79,.45)}
.field .err{color:var(--warn);font-size:13px;display:none}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);padding:28px}
@media(min-width:900px){.form-card{padding:36px}}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:rgba(246,245,241,.7);padding:64px 0 28px}
.footer-top{border-bottom:1px solid var(--line-dark);padding-bottom:36px;margin-bottom:40px}
.footer-slogan{color:#fff;font-size:clamp(1.3rem,3vw,2.1rem);font-weight:800;letter-spacing:-.02em;max-width:820px;line-height:1.3}
.footer-grid{display:grid;gap:32px}
@media(min-width:768px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr}}
.footer-brand b{color:#fff;font-size:15.5px;display:block}
.footer-brand p{font-size:14px;margin-top:10px;max-width:320px}
.footer-col h4{color:#fff;font-size:14px;letter-spacing:.06em;margin-bottom:14px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;transition:color var(--dur) var(--ease)}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{border-top:1px solid var(--line-dark);margin-top:40px;padding-top:22px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(246,245,241,.5)}
.socials{display:flex;gap:10px;margin-top:16px}
.socials a{width:36px;height:36px;border-radius:50%;border:1px solid var(--line-dark);display:grid;place-items:center;font-size:12px;transition:all var(--dur) var(--ease)}
.socials a:hover{background:var(--accent);color:var(--ink);border-color:var(--accent)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity 520ms var(--ease),transform 520ms var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
main{padding-bottom:76px}
@media(min-width:768px){main{padding-bottom:0}}

/* roulang page: category1 */
:root{
  --ink:#14161A;
  --ink-2:#2A2D33;
  --graphite:#6E7278;
  --paper:#F6F5F1;
  --paper-2:#EFEDE7;
  --dark:#0F1013;
  --accent:#D9F94F;
  --accent-ink:#14161A;
  --warn:#FF5A1F;
  --line:rgba(20,22,26,.10);
  --line-dark:rgba(255,255,255,.12);
  --r-card:20px;
  --r-lg:28px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,22,26,.05),0 12px 32px -20px rgba(20,22,26,.20);
  --sh-2:0 2px 6px rgba(20,22,26,.06),0 24px 60px -28px rgba(20,22,26,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:260ms;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-2);
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.8;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color var(--dur) var(--ease)}
a:hover{color:var(--ink)}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:760;letter-spacing:-.02em;line-height:1.25}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(217,249,79,.85);outline-offset:2px;border-radius:6px}

.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media (min-width:768px){.container{padding-left:32px;padding-right:32px}}
@media (min-width:1024px){.container{padding-left:48px;padding-right:48px}}

/* ---------- Dock 导航 ---------- */
.dock-wrap{
  position:fixed;
  top:18px;left:0;right:0;
  z-index:80;
  display:flex;
  justify-content:center;
  padding:0 12px;
  pointer-events:none;
}
.dock{
  pointer-events:auto;
  width:min(1120px,92vw);
  min-height:68px;
  display:flex;
  align-items:center;
  gap:18px;
  padding:8px 10px 8px 16px;
  background:rgba(246,245,241,.74);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  box-shadow:var(--sh-1);
  transition:width var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease);
}
.dock.shrink{
  width:min(1052px,88vw);
  box-shadow:var(--sh-2);
  background:rgba(246,245,241,.86);
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.brand-mark{
  width:38px;height:38px;
  flex:0 0 auto;
  border-radius:12px;
  background:var(--dark);
  color:var(--accent);
  display:grid;place-items:center;
  font-weight:800;
  font-size:17px;
  border:1px solid rgba(255,255,255,.10);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-size:16px;font-weight:800;color:var(--ink);letter-spacing:-.02em}
.brand-text i{font-style:normal;font-size:11.5px;color:var(--graphite);letter-spacing:.06em}
.nav-links{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
}
.nav-links a{
  position:relative;
  font-size:14px;
  letter-spacing:.02em;
  color:var(--ink-2);
  padding:9px 12px;
  border-radius:var(--r-pill);
  white-space:nowrap;
  transition:color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:4px;
  height:2px;
  border-radius:2px;
  background:var(--accent);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--dur) var(--ease);
}
.nav-links a:hover{background:rgba(20,22,26,.05);color:var(--ink)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--ink);font-weight:760;background:rgba(20,22,26,.05)}
.nav-links a.active::after{transform:scaleX(1)}
.dock-actions{
  display:flex;
  align-items:center;
  gap:8px;
  flex:0 0 auto;
  margin-left:8px;
}
.icon-btn{
  width:40px;height:40px;
  display:grid;place-items:center;
  border-radius:50%;
  border:1px solid var(--line);
  background:rgba(255,255,255,.7);
  color:var(--ink-2);
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),transform var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.icon-btn:hover{background:var(--ink);color:var(--paper);border-color:var(--ink);transform:translateY(-1px)}
.icon-btn:active{transform:translateY(0)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:700;
  letter-spacing:.01em;
  padding:13px 24px;
  min-height:48px;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.btn-sm{min-height:40px;padding:9px 18px;font-size:14px}
.btn-primary{
  background:var(--accent);
  color:var(--accent-ink);
  border:1.5px solid var(--accent);
  box-shadow:0 8px 24px -16px rgba(20,22,26,.55);
}
.btn-primary:hover{background:var(--ink);color:var(--accent);border-color:var(--ink);transform:translateY(-2px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{
  background:transparent;
  color:var(--ink);
  border:1.5px solid var(--ink);
}
.btn-ghost:hover{background:var(--ink);color:var(--paper);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-dark{
  background:var(--dark);
  color:var(--paper);
  border:1.5px solid rgba(255,255,255,.18);
}
.btn-dark:hover{background:var(--accent);color:var(--accent-ink);border-color:var(--accent);transform:translateY(-2px)}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none}
.link-cta{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  font-weight:700;
  color:var(--ink);
  padding-bottom:3px;
}
.link-cta::after{
  content:"";
  position:absolute;left:0;bottom:0;
  width:100%;height:2px;
  background:var(--accent);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--dur) var(--ease);
}
.link-cta:hover::after{transform:scaleX(1)}

/* ---------- 徽章与标签 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:13px;
  letter-spacing:.04em;
  padding:5px 12px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:rgba(217,249,79,.22);
  color:var(--ink);
  font-weight:700;
}
.badge-outline{background:transparent;color:var(--graphite);font-weight:600}
.badge-warn{
  background:rgba(255,90,31,.10);
  border-color:rgba(255,90,31,.35);
  color:#B33A10;
}
.tag-mono{
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.06em;
  color:var(--graphite);
}

/* ---------- 页面区段 ---------- */
main{padding-top:118px}
.section{padding:64px 0}
@media (min-width:1024px){.section{padding:112px 0}}
.section-tight{padding:48px 0}
@media (min-width:1024px){.section-tight{padding:72px 0}}
.section-head{max-width:720px;margin-bottom:36px}
.section-head h2{font-size:clamp(1.5rem,2.6vw,2.1rem)}
.section-head p{margin-top:14px;color:var(--graphite);font-size:16px}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.14em;
  color:var(--graphite);
  text-transform:uppercase;
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  letter-spacing:.04em;
  color:var(--graphite);
  margin-bottom:22px;
}
.breadcrumb a{color:var(--graphite)}
.breadcrumb a:hover{color:var(--ink)}
.breadcrumb .sep{color:rgba(20,22,26,.28)}
.breadcrumb .current{color:var(--ink);font-weight:700}

/* ---------- 头图横条 ---------- */
.head-banner{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--dark);
  min-height:230px;
  display:flex;
  align-items:flex-end;
  box-shadow:var(--sh-1);
}
.head-banner img{
  position:absolute;inset:0;
  width:100%;height:100%;
  object-fit:cover;
  opacity:.42;
}
.head-banner::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(15,16,19,.30) 0%,rgba(15,16,19,.86) 100%);
}
.head-banner-inner{
  position:relative;
  z-index:2;
  padding:28px 24px 30px;
  width:100%;
}
@media (min-width:768px){.head-banner-inner{padding:40px 40px 42px}}
.head-banner h1{
  color:#fff;
  font-size:clamp(1.75rem,3.9vw,2.85rem);
  line-height:1.16;
  max-width:860px;
}
.head-banner h1 em{
  font-style:normal;
  color:var(--accent-ink);
  background:var(--accent);
  padding:0 8px;
  border-radius:8px;
  box-decoration-break:clone;
  -webkit-box-decoration-break:clone;
}
.head-banner p{
  margin-top:16px;
  max-width:720px;
  color:rgba(246,245,241,.80);
  font-size:16px;
  line-height:1.75;
}
.head-banner .badge{margin-bottom:16px;background:rgba(217,249,79,.92)}

/* ---------- 主体两栏 ---------- */
.guide-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:40px;
}
@media (min-width:1024px){
  .guide-grid{grid-template-columns:340px minmax(0,1fr);gap:56px;align-items:start}
}
.guide-aside{
  display:flex;
  flex-direction:column;
  gap:20px;
}
@media (min-width:1024px){
  .guide-aside{position:sticky;top:118px}
}
.aside-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--sh-1);
}
.aside-card h2{font-size:17px;letter-spacing:0}
.aside-card p{margin-top:10px;font-size:14.5px;color:var(--graphite);line-height:1.75}
.aside-nav{margin-top:18px;display:flex;flex-direction:column;gap:2px}
.aside-nav a{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14.5px;
  color:var(--ink-2);
  padding:9px 10px;
  border-radius:12px;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.aside-nav a span{
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--graphite);
  letter-spacing:.06em;
}
.aside-nav a:hover{background:var(--paper-2);color:var(--ink);transform:translateX(2px)}
.aside-tip{
  background:var(--dark);
  border-radius:var(--r-card);
  padding:24px;
  border:1px solid rgba(255,255,255,.10);
  color:rgba(246,245,241,.82);
}
.aside-tip h3{color:#fff;font-size:16px;margin-bottom:10px}
.aside-tip p{font-size:14.5px;line-height:1.75;color:rgba(246,245,241,.72)}
.aside-tip ul{margin-top:14px;display:flex;flex-direction:column;gap:9px}
.aside-tip li{
  position:relative;
  padding-left:16px;
  font-size:14px;
  color:rgba(246,245,241,.74);
}
.aside-tip li::before{
  content:"";
  position:absolute;left:0;top:11px;
  width:6px;height:6px;
  border-radius:2px;
  background:var(--accent);
}

/* ---------- 右栏图文块 ---------- */
.guide-main{display:flex;flex-direction:column;gap:32px}
.guide-block{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:24px;
  box-shadow:var(--sh-1);
  display:grid;
  grid-template-columns:1fr;
  gap:24px;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.guide-block:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(20,22,26,.20)}
@media (min-width:768px){
  .guide-block{
    grid-template-columns:minmax(0,1fr) minmax(0,1fr);
    align-items:center;
    padding:32px;
    gap:36px;
  }
  .guide-block.rev .block-media{order:2}
}
.block-media{
  position:relative;
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line);
  aspect-ratio:16/10;
  background:var(--paper-2);
}
.block-media img{width:100%;height:100%;object-fit:cover}
.block-num{
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.12em;
  color:var(--graphite);
  display:block;
  margin-bottom:10px;
}
.block-body h2{
  font-size:clamp(1.2rem,2.1vw,1.55rem);
  margin-bottom:14px;
}
.block-body > p{color:var(--graphite);font-size:16px;line-height:1.8}
.point-list{margin-top:18px;display:flex;flex-direction:column;gap:11px}
.point-list li{
  position:relative;
  padding-left:26px;
  font-size:15.5px;
  color:var(--ink-2);
  line-height:1.7;
}
.point-list li::before{
  content:"";
  position:absolute;
  left:4px;top:9px;
  width:9px;height:9px;
  border-radius:2px;
  background:var(--accent);
  border:1px solid rgba(20,22,26,.55);
}
.point-list li b{color:var(--ink);font-weight:760}

/* ---------- 要点清单区 ---------- */
.checklist{
  background:var(--paper-2);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.check-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:20px;
}
@media (min-width:768px){.check-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.check-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
.check-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--sh-1);
  display:flex;
  flex-direction:column;
  gap:10px;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.check-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(20,22,26,.22)}
.check-card h3{font-size:16.5px}
.check-card p{font-size:14.5px;color:var(--graphite);line-height:1.75}
.check-icon{
  width:36px;height:36px;
  border-radius:12px;
  background:rgba(217,249,79,.28);
  border:1px solid var(--line);
  display:grid;place-items:center;
  font-family:var(--font-mono);
  font-size:13px;
  font-weight:700;
  color:var(--ink);
}

/* ---------- FAQ ---------- */
.faq-wrap{
  background:var(--paper-2);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.faq-list{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-1);
}
.faq-item + .faq-item{border-top:1px solid var(--line)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  text-align:left;
  padding:22px 24px;
  font-size:17px;
  font-weight:700;
  color:var(--ink);
  letter-spacing:-.01em;
  transition:background var(--dur) var(--ease);
}
.faq-q:hover{background:var(--paper)}
.faq-q span.q-text{flex:1 1 auto}
.faq-icon{
  position:relative;
  width:20px;height:20px;
  flex:0 0 auto;
}
.faq-icon i{
  position:absolute;
  background:var(--ink);
  border-radius:2px;
  transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease);
}
.faq-icon i:nth-child(1){top:9px;left:0;width:20px;height:2px}
.faq-icon i:nth-child(2){left:9px;top:0;width:2px;height:20px}
.faq-item.open .faq-icon i:nth-child(2){transform:rotate(90deg);opacity:0}
.faq-a{
  max-height:0;
  opacity:0;
  overflow:hidden;
  padding:0 24px;
  transition:max-height 300ms var(--ease),opacity 300ms var(--ease),padding 300ms var(--ease);
}
.faq-a p{font-size:15px;line-height:1.85;color:var(--ink-2);max-width:860px}
.faq-item.open .faq-a{max-height:340px;opacity:1;padding:0 24px 24px}

/* ---------- 底部 CTA ---------- */
.cta-band{
  background:var(--dark);
  color:var(--paper);
  position:relative;
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:64px 64px;
  opacity:.7;
}
.cta-inner{position:relative;z-index:2;padding:64px 0}
@media (min-width:1024px){.cta-inner{padding:104px 0}}
.cta-band h2{
  color:#fff;
  font-size:clamp(1.6rem,3.4vw,2.5rem);
  max-width:760px;
}
.cta-band p{margin-top:16px;max-width:640px;color:rgba(246,245,241,.72);font-size:16.5px}
.cta-actions{margin-top:32px;display:flex;flex-wrap:wrap;gap:14px}
@media (max-width:520px){
  .cta-actions{flex-direction:column}
  .cta-actions .btn{width:100%}
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--dark);
  color:rgba(246,245,241,.72);
  border-top:1px solid var(--line-dark);
  padding:56px 0 28px;
}
.footer-top{
  padding-bottom:28px;
  border-bottom:1px solid var(--line-dark);
  margin-bottom:36px;
}
.footer-slogan{
  font-size:clamp(1.05rem,2.2vw,1.5rem);
  font-weight:700;
  color:#fff;
  letter-spacing:-.01em;
  max-width:720px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}}
.footer-brand b{display:block;color:#fff;font-size:17px;font-weight:800;letter-spacing:-.02em}
.footer-brand p{margin-top:12px;font-size:14.5px;line-height:1.8;max-width:340px;color:rgba(246,245,241,.62)}
.socials{display:flex;gap:10px;margin-top:18px;flex-wrap:wrap}
.socials a{
  font-size:13px;
  letter-spacing:.04em;
  padding:6px 14px;
  border-radius:var(--r-pill);
  border:1px solid var(--line-dark);
  color:rgba(246,245,241,.78);
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.socials a:hover{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.footer-col h4{
  color:#fff;
  font-size:14px;
  letter-spacing:.06em;
  margin-bottom:16px;
  font-weight:700;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14.5px;color:rgba(246,245,241,.68)}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
  margin-top:40px;
  padding-top:22px;
  border-top:1px solid var(--line-dark);
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px;
  font-size:13px;
  letter-spacing:.04em;
  color:rgba(246,245,241,.50);
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity 520ms var(--ease),transform 520ms var(--ease)}
.reveal.in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
}

/* ---------- 移动端导航 ---------- */
@media (max-width:767px){
  main{padding-top:104px}
  body{padding-bottom:92px}
  .dock{
    background:transparent;
    border:0;
    box-shadow:none;
    -webkit-backdrop-filter:none;
    backdrop-filter:none;
    padding:0;
    min-height:auto;
    width:92vw;
    justify-content:space-between;
  }
  .dock.shrink{width:92vw;box-shadow:none;background:transparent}
  .brand{
    background:rgba(246,245,241,.86);
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
    border:1px solid var(--line);
    border-radius:var(--r-pill);
    padding:6px 14px 6px 8px;
    box-shadow:var(--sh-1);
  }
  .brand-text i{display:none}
  .dock-actions{margin-left:0;gap:8px}
  .dock-actions .btn{display:none}
  .icon-btn{
    background:rgba(246,245,241,.86);
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
    box-shadow:var(--sh-1);
    width:44px;height:44px;
  }
  .nav-links{
    position:fixed;
    left:12px;right:12px;bottom:12px;
    margin:0;
    background:rgba(246,245,241,.94);
    -webkit-backdrop-filter:blur(16px);
    backdrop-filter:blur(16px);
    border:1px solid var(--line);
    border-radius:22px;
    box-shadow:var(--sh-2);
    padding:8px;
    gap:2px;
    justify-content:space-between;
    z-index:90;
  }
  .nav-links a{
    flex:1 1 auto;
    text-align:center;
    font-size:12.5px;
    padding:11px 6px;
    line-height:1.3;
  }
  .nav-links a::after{left:8px;right:8px;bottom:5px}
}
@media (max-width:520px){
  .head-banner{min-height:200px}
  .head-banner-inner{padding:24px 20px 26px}
  .faq-q{padding:18px 18px;font-size:15.5px}
  .faq-a{padding:0 18px}
  .faq-item.open .faq-a{padding:0 18px 20px}
}

/* roulang page: article */
:root{
  --ink:#14161A;--ink-2:#2A2D33;--graphite:#6E7278;
  --paper:#F6F5F1;--paper-2:#EFEDE7;--dark:#0F1013;
  --accent:#D9F94F;--accent-ink:#14161A;--warn:#FF5A1F;
  --line:rgba(20,22,26,.10);--line-dark:rgba(255,255,255,.12);
  --r-card:20px;--r-lg:28px;--r-pill:999px;
  --sh-1:0 1px 2px rgba(20,22,26,.05),0 12px 32px -20px rgba(20,22,26,.20);
  --sh-2:0 2px 6px rgba(20,22,26,.06),0 24px 60px -28px rgba(20,22,26,.28);
  --ease:cubic-bezier(.22,.61,.36,1);--dur:260ms;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink-2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:17px;line-height:1.8;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:800;letter-spacing:-.02em;line-height:1.25}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
:focus-visible{outline:3px solid rgba(217,249,79,.85);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 32px}}
@media(min-width:1024px){.container{padding:0 48px}}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;letter-spacing:.04em}

/* ---------- Dock 导航 ---------- */
.dock-wrap{position:sticky;top:14px;z-index:60;display:flex;justify-content:center;padding:0 16px;pointer-events:none}
.dock{
  pointer-events:auto;width:min(1120px,100%);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:10px 14px 10px 16px;border-radius:var(--r-pill);
  background:rgba(246,245,241,.78);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);box-shadow:var(--sh-1);
  transition:width var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.dock.is-scrolled{width:min(1052px,96%);box-shadow:var(--sh-2)}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.brand-mark{
  width:36px;height:36px;border-radius:12px;background:var(--ink);color:var(--accent);
  display:grid;place-items:center;font-weight:800;font-size:15px;flex:0 0 auto;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;min-width:0}
.brand-text b{font-size:15px;font-weight:800;color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:230px}
.brand-text i{font-style:normal;font-size:11px;letter-spacing:.08em;color:var(--graphite)}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  position:relative;padding:9px 13px;font-size:14px;letter-spacing:.02em;color:var(--ink-2);
  border-radius:var(--r-pill);white-space:nowrap;
  transition:color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:50%;bottom:3px;transform:translateX(-50%);
  width:0;height:2px;background:var(--accent);transition:width var(--dur) var(--ease);
}
.nav-links a:hover{color:var(--ink);background:var(--paper-2)}
.nav-links a:hover::after{width:18px}
.nav-links a.active{color:var(--ink);font-weight:700}
.nav-links a.active::after{width:18px}
.nav-links a.active::before{
  content:"";display:inline-block;width:6px;height:6px;border-radius:50%;
  background:var(--accent);margin-right:6px;vertical-align:middle;
}
.dock-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.icon-btn{
  width:38px;height:38px;border-radius:50%;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--ink-2);background:rgba(255,255,255,.6);
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.icon-btn:hover{background:var(--ink);color:var(--accent);border-color:var(--ink)}

/* ---------- 按钮 / 徽章 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);font-size:15px;font-weight:700;padding:14px 26px;
  border:1.5px solid transparent;white-space:nowrap;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),
             border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.btn:hover{transform:translateY(-1px)}
.btn:disabled,.btn[disabled]{opacity:.45;cursor:not-allowed}
.btn-sm{padding:10px 18px;font-size:13.5px}
.btn-primary{background:var(--accent);color:var(--accent-ink)}
.btn-primary:hover{background:var(--ink);color:var(--accent)}
.btn-outline{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-outline:hover{background:var(--ink);color:var(--paper)}
.btn-ghost-light{border-color:rgba(255,255,255,.35);color:#F6F5F1}
.btn-ghost-light:hover{background:#F6F5F1;color:var(--ink);border-color:#F6F5F1}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:var(--r-pill);
  font-size:13px;letter-spacing:.04em;font-weight:600;
  background:rgba(217,249,79,.22);border:1px solid rgba(20,22,26,.12);color:var(--ink);
}
.badge-time{background:transparent;border:1px solid var(--line);color:var(--graphite);font-weight:500}
.badge-warn{background:rgba(255,90,31,.12);border-color:rgba(255,90,31,.35);color:#B93A0D}

/* ---------- 文章头部 ---------- */
.article-head{padding:56px 0 8px}
@media(min-width:768px){.article-head{padding:72px 0 12px}}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--graphite);letter-spacing:.02em}
.crumbs a{transition:color var(--dur) var(--ease)}
.crumbs a:hover{color:var(--ink)}
.crumbs .sep{color:rgba(20,22,26,.28)}
.crumbs .now{color:var(--ink-2);max-width:420px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.article-title{font-size:clamp(1.75rem,4vw,2.7rem);line-height:1.2;margin-top:20px;max-width:920px}
.article-sub{
  margin-top:16px;font-size:16px;color:var(--graphite);max-width:760px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;margin-top:20px;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:12.5px;letter-spacing:.04em;color:var(--graphite);
}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:rgba(20,22,26,.22)}
.cover-strip{
  margin-top:36px;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  aspect-ratio:16/6;box-shadow:var(--sh-1);background:var(--paper-2);
}
.cover-strip img{width:100%;height:100%;object-fit:cover}

/* ---------- 正文 ---------- */
.article-main{padding:48px 0 0}
@media(min-width:768px){.article-main{padding:64px 0 0}}
.article-body{max-width:760px;margin:0 auto;color:var(--ink-2);font-size:17px;line-height:1.85}
.article-body>*+*{margin-top:1.1em}
.article-body h2{
  margin:56px 0 16px;font-size:1.5rem;line-height:1.35;color:var(--ink);position:relative;padding-top:14px;
}
.article-body h2::before{content:"";position:absolute;top:0;left:0;width:36px;height:3px;background:var(--accent);border-radius:2px}
.article-body h3{margin:32px 0 12px;font-size:1.18rem;color:var(--ink)}
.article-body p{margin:0 0 1.1em}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding:0}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:9px}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:8px;height:8px;
  background:var(--accent);border:1px solid var(--ink);border-radius:2px;
}
.article-body ol{counter-reset:li}
.article-body ol li{position:relative;padding-left:30px;margin-bottom:9px;counter-increment:li}
.article-body ol li::before{
  content:counter(li,decimal-leading-zero);position:absolute;left:0;top:0;
  font-family:ui-monospace,Menlo,monospace;font-size:13px;color:var(--graphite);font-weight:700;
}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;background:var(--paper-2);
  border-left:3px solid var(--accent);border-radius:0 12px 12px 0;color:var(--ink-2);
}
.article-body a{color:var(--ink);font-weight:600;border-bottom:2px solid var(--accent);padding-bottom:1px}
.article-body a:hover{background:rgba(217,249,79,.35)}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px}
.article-body table th,.article-body table td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.article-body table th{background:var(--paper-2);color:var(--ink);font-weight:700}
.article-body img{border-radius:var(--r-card);border:1px solid var(--line);margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--graphite);margin-top:8px;text-align:left}
.article-body strong{color:var(--ink);font-weight:700}
.article-body hr{border:0;border-top:1px solid var(--line);margin:40px 0}

/* ---------- 文内 CTA ---------- */
.inline-cta{
  max-width:760px;margin:56px auto 0;padding:26px 28px;border-radius:var(--r-card);
  background:var(--dark);color:rgba(246,245,241,.78);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;
}
.inline-cta b{display:block;color:#F6F5F1;font-size:17px;letter-spacing:-.01em}
.inline-cta p{font-size:14px;margin-top:6px;max-width:460px}

/* ---------- 相关推荐 ---------- */
.related{padding:72px 0 0}
@media(min-width:768px){.related{padding:96px 0 0}}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px}
.sec-head h2{font-size:clamp(1.4rem,2.6vw,1.9rem)}
.sec-head .lead{font-size:14px;color:var(--graphite);margin-top:8px}
.link-cta{
  position:relative;font-size:14px;font-weight:700;color:var(--ink);padding-bottom:4px;white-space:nowrap;
}
.link-cta::after{
  content:"";position:absolute;left:0;bottom:0;width:100%;height:2px;background:var(--accent);
  transform:scaleX(.35);transform-origin:left;transition:transform var(--dur) var(--ease);
}
.link-cta:hover::after{transform:scaleX(1)}
.rel-grid{display:grid;gap:20px;grid-template-columns:1fr}
@media(min-width:860px){.rel-grid{grid-template-columns:repeat(3,1fr)}}
.rel-card{
  position:relative;display:block;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);padding:26px 24px;box-shadow:var(--sh-1);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.rel-card::before{
  content:"";position:absolute;left:-1px;top:22px;bottom:22px;width:0;
  background:var(--accent);border-radius:0 2px 2px 0;transition:width var(--dur) var(--ease);
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--ink)}
.rel-card:hover::before{width:3px}
.rel-card h3{font-size:17px;line-height:1.5;margin-bottom:12px}
.rel-meta{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--graphite);font-family:ui-monospace,Menlo,monospace;letter-spacing:.04em}

/* ---------- 空态 ---------- */
.empty-state{
  max-width:760px;margin:0 auto;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);padding:48px 28px;text-align:center;box-shadow:var(--sh-1);
}
.empty-state .mark{
  width:56px;height:56px;border-radius:18px;background:var(--paper-2);border:1px solid var(--line);
  display:grid;place-items:center;margin:0 auto 18px;color:var(--ink);
}
.empty-state h2{font-size:1.2rem;margin-bottom:10px}
.empty-state p{color:var(--graphite);font-size:15px;margin-bottom:22px}

/* ---------- 底部 CTA ---------- */
.page-cta-wrap{padding:80px 0 0}
@media(min-width:768px){.page-cta-wrap{padding:104px 0 0}}
.page-cta{
  position:relative;overflow:hidden;background:var(--dark);color:rgba(246,245,241,.76);
  border-radius:var(--r-lg);padding:56px 28px;text-align:center;
}
.page-cta::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.16;
  background-image:linear-gradient(var(--line-dark) 1px,transparent 1px),linear-gradient(90deg,var(--line-dark) 1px,transparent 1px);
  background-size:56px 56px;
}
.page-cta>*{position:relative;z-index:1}
.page-cta h2{color:#F6F5F1;font-size:clamp(1.6rem,3.4vw,2.4rem);line-height:1.25}
.page-cta p{max-width:620px;margin:16px auto 0;font-size:16px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:30px}
@media(max-width:640px){.cta-actions .btn{width:100%}}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:rgba(246,245,241,.68);margin-top:96px;padding:64px 0 28px}
@media(min-width:768px){.site-footer{margin-top:112px;padding:72px 0 32px}}
.footer-slogan{
  font-size:clamp(1.15rem,2.2vw,1.5rem);font-weight:700;color:#F6F5F1;letter-spacing:-.01em;
  padding-bottom:28px;border-bottom:1px solid var(--line-dark);
}
.footer-grid{display:grid;gap:32px;margin-top:40px}
@media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}}
.footer-brand b{display:block;color:#F6F5F1;font-size:16px;font-weight:800;letter-spacing:-.01em}
.footer-brand p{font-size:14px;line-height:1.8;margin-top:12px;max-width:340px}
.socials{display:flex;gap:10px;margin-top:18px}
.socials a{
  font-size:12.5px;letter-spacing:.06em;padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid var(--line-dark);color:rgba(246,245,241,.8);
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.socials a:hover{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.footer-col h4{color:#F6F5F1;font-size:13px;letter-spacing:.1em;font-weight:700;margin-bottom:16px}
.footer-col ul li+li{margin-top:10px}
.footer-col ul a{font-size:14px;color:rgba(246,245,241,.68);transition:color var(--dur) var(--ease)}
.footer-col ul a:hover{color:var(--accent)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line-dark);
  font-size:12.5px;letter-spacing:.03em;color:rgba(246,245,241,.52);
}

/* ---------- 移动端导航 ---------- */
@media(max-width:1023px){
  .nav-links{overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none}
  .nav-links::-webkit-scrollbar{display:none}
}
@media(max-width:860px){
  .brand-text i{display:none}
  .brand-text b{max-width:150px;font-size:14px}
  .dock-actions .btn{padding:9px 14px;font-size:13px}
}
@media(max-width:767px){
  .dock-wrap{position:sticky;top:10px;padding:0 12px}
  .dock{flex-wrap:wrap;justify-content:space-between;border-radius:24px;padding:10px 12px;gap:10px}
  .nav-links{order:3;width:100%;justify-content:flex-start;padding-top:6px;border-top:1px solid var(--line)}
  .nav-links a{padding:8px 10px;font-size:13.5px}
  .icon-btn{display:none}
  .dock-actions .btn{padding:8px 14px;font-size:12.5px}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}
.reveal{opacity:0;transform:translateY(14px);transition:opacity 520ms var(--ease),transform 520ms var(--ease)}
.reveal.in{opacity:1;transform:none}

/* roulang page: category2 */
:root{
  --ink:#14161A;--ink-2:#2A2D33;--graphite:#6E7278;
  --paper:#F6F5F1;--paper-2:#EFEDE7;--dark:#0F1013;
  --accent:#D9F94F;--accent-ink:#14161A;--warn:#FF5A1F;
  --line:rgba(20,22,26,.10);--line-dark:rgba(255,255,255,.12);
  --r-card:20px;--r-lg:28px;--r-pill:999px;
  --sh-1:0 1px 2px rgba(20,22,26,.05),0 12px 32px -20px rgba(20,22,26,.20);
  --sh-2:0 2px 6px rgba(20,22,26,.06),0 24px 60px -28px rgba(20,22,26,.28);
  --ease:cubic-bezier(.22,.61,.36,1);--dur:260ms;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink-2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16.5px;line-height:1.8;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4{color:var(--ink);font-weight:800;letter-spacing:-.02em;line-height:1.25;margin:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
figure{margin:0}
::selection{background:var(--accent);color:var(--accent-ink)}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 32px}}
@media(min-width:1024px){.container{padding:0 48px}}

/* ---------- Dock 导航 ---------- */
.dock-wrap{
  position:fixed;top:16px;left:0;right:0;z-index:60;
  display:flex;justify-content:center;padding:0 16px;pointer-events:none;
}
.dock{
  pointer-events:auto;display:flex;align-items:center;gap:16px;
  width:min(1120px,92vw);height:68px;padding:0 14px 0 16px;
  border-radius:26px;border:1px solid var(--line);
  background:rgba(246,245,241,.78);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--sh-1);
  transition:width var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease);
}
.dock-wrap.is-scrolled .dock{
  width:min(1053px,86vw);box-shadow:var(--sh-2);background:rgba(246,245,241,.92);
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:36px;height:36px;border-radius:12px;background:var(--ink);
  display:grid;place-items:center;flex-shrink:0;
}
.brand-mark span{color:var(--accent);font-weight:800;font-size:16px;line-height:1}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text b{font-size:15px;font-weight:800;color:var(--ink);letter-spacing:-.01em;white-space:nowrap}
.brand-text i{font-style:normal;font-size:11px;color:var(--graphite);letter-spacing:.06em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-links a{
  position:relative;font-size:14px;letter-spacing:.02em;color:var(--ink-2);
  padding:8px 12px;border-radius:var(--r-pill);
  transition:color var(--dur) var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:50%;bottom:3px;height:2px;width:0;border-radius:2px;
  background:var(--accent);transform:translateX(-50%);
  transition:width var(--dur) var(--ease);
}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after{width:60%}
.nav-links a.active{color:var(--ink);font-weight:700}
.nav-links a.active::after{width:60%}
.dock-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.icon-btn{
  width:38px;height:38px;border-radius:var(--r-pill);border:1px solid var(--line);
  display:grid;place-items:center;color:var(--ink-2);
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.icon-btn:hover{background:var(--ink);color:var(--accent);border-color:var(--ink)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--r-pill);font-size:15px;font-weight:700;
  letter-spacing:.01em;white-space:nowrap;cursor:pointer;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),
             border-color var(--dur) var(--ease),transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.btn:focus-visible{outline:3px solid rgba(217,249,79,.85);outline-offset:2px}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--accent);color:var(--accent-ink);border:1.5px solid var(--accent)}
.btn-primary:hover{background:var(--ink);color:var(--accent);border-color:var(--ink)}
.btn-ghost{background:transparent;color:var(--ink);border:1.5px solid var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--paper)}
.btn-ghost.on-dark{border-color:rgba(255,255,255,.45);color:#fff}
.btn-ghost.on-dark:hover{background:#fff;color:var(--ink);border-color:#fff}
.btn-sm{padding:10px 18px;font-size:14px}

.link-cta{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  font-weight:700;color:var(--ink);padding-bottom:4px;
}
.link-cta::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:100%;
  background:var(--accent);transform:scaleX(.35);transform-origin:left;
  transition:transform var(--dur) var(--ease);
}
.link-cta:hover::after{transform:scaleX(1)}

/* ---------- 通用 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:var(--r-pill);font-size:13px;letter-spacing:.04em;
  background:rgba(217,249,79,.22);border:1px solid var(--line);color:var(--ink-2);
}
.badge.outline{background:transparent;color:var(--graphite)}
.badge.warn{background:rgba(255,90,31,.10);border-color:rgba(255,90,31,.28);color:#B23A0D}
.section{padding:64px 0}
@media(min-width:1024px){.section{padding:112px 0}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px}
@media(min-width:1024px){.section-head{margin-bottom:48px}}
.section-head h2{font-size:clamp(1.5rem,2.6vw,2.1rem)}
.section-head p{color:var(--graphite);font-size:15px;max-width:640px;margin-top:10px}
.eyebrow{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:12px;letter-spacing:.16em;color:var(--graphite);text-transform:uppercase;
}
.divider{height:1px;background:var(--line);border:0;margin:0}

.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--graphite);letter-spacing:.02em}
.crumbs a{transition:color var(--dur) var(--ease)}
.crumbs a:hover{color:var(--ink)}
.crumbs .sep{color:rgba(20,22,26,.28)}
.crumbs .current{color:var(--ink-2)}

/* ---------- 页头 ---------- */
.page-head{padding:132px 0 0}
@media(min-width:1024px){.page-head{padding:160px 0 0}}
.page-head h1{font-size:clamp(1.9rem,4.2vw,3.1rem);line-height:1.18;margin:18px 0 16px;max-width:900px}
.page-head .lede{font-size:17px;color:var(--graphite);max-width:760px}
.head-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.page-banner{
  margin-top:40px;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--sh-1);position:relative;
  aspect-ratio:16/9;
}
@media(min-width:768px){.page-banner{aspect-ratio:16/6}}
.page-banner img{width:100%;height:100%;object-fit:cover}
.page-banner figcaption{
  position:absolute;left:18px;bottom:14px;right:18px;
  font-size:13px;color:rgba(255,255,255,.88);letter-spacing:.02em;
  text-shadow:0 1px 8px rgba(0,0,0,.5);
}

/* ---------- 标签区 ---------- */
.tabs-wrap{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.tabs{
  display:flex;gap:8px;overflow-x:auto;padding:6px;margin-bottom:32px;
  background:rgba(255,255,255,.7);border:1px solid var(--line);border-radius:var(--r-pill);
  -webkit-overflow-scrolling:touch;scrollbar-width:none;
}
.tabs::-webkit-scrollbar{display:none}
.tab{
  flex:0 0 auto;padding:11px 20px;border-radius:var(--r-pill);font-size:14.5px;font-weight:600;
  color:var(--graphite);white-space:nowrap;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease);
}
.tab:hover{color:var(--ink)}
.tab.is-active{background:var(--ink);color:var(--accent)}
.tab:focus-visible{outline:3px solid rgba(217,249,79,.85);outline-offset:2px}
.tab-panel{display:none;animation:fadeUp .45s var(--ease) both}
.tab-panel.is-active{display:block}
@keyframes fadeUp{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.panel-grid{display:grid;grid-template-columns:1fr;gap:28px;align-items:start}
@media(min-width:1024px){.panel-grid{grid-template-columns:5fr 7fr;gap:48px}}
.panel-figure{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--sh-1);aspect-ratio:16/10;background:#fff;
}
.panel-figure img{width:100%;height:100%;object-fit:cover}
.panel-body h3{font-size:1.3rem;margin-bottom:14px}
.panel-body p{color:var(--ink-2);margin-bottom:18px}
.point-list{display:grid;gap:12px}
.point-list li{
  display:flex;gap:12px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 16px;
  font-size:15px;transition:border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.point-list li:hover{border-color:var(--ink);transform:translateY(-2px)}
.point-list li::before{
  content:"";width:8px;height:8px;border-radius:2px;background:var(--accent);
  margin-top:9px;flex-shrink:0;
}
.point-list b{color:var(--ink);font-weight:700}

/* ---------- 信息卡网格 ---------- */
.card-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:640px){.card-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.card-grid{grid-template-columns:repeat(4,1fr);gap:24px}}
.info-card{
  display:flex;flex-direction:column;height:100%;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 24px;box-shadow:var(--sh-1);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.info-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--ink)}
.info-card .num{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:13px;letter-spacing:.14em;color:var(--graphite);
}
.info-card h3{font-size:1.08rem;margin:14px 0 10px}
.info-card p{font-size:14.5px;color:var(--graphite);line-height:1.75}
.info-card .card-foot{margin-top:auto;padding-top:18px;font-size:13px;color:var(--graphite);letter-spacing:.04em}

/* ---------- 时间轴 ---------- */
.steps-wrap{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.timeline{position:relative;display:grid;gap:20px}
@media(min-width:1024px){.timeline{grid-template-columns:repeat(4,1fr);gap:24px}}
.timeline::before{
  content:"";position:absolute;left:17px;top:8px;bottom:8px;width:1px;background:var(--line);
}
@media(min-width:1024px){
  .timeline::before{left:0;right:0;top:17px;bottom:auto;width:auto;height:1px}
}
.step{
  position:relative;padding-left:52px;
  background:transparent;
}
@media(min-width:1024px){.step{padding-left:0;padding-top:52px}}
.step .dot{
  position:absolute;left:0;top:0;width:36px;height:36px;border-radius:var(--r-pill);
  background:var(--ink);color:var(--accent);display:grid;place-items:center;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13px;font-weight:700;
  z-index:1;
}
.step h3{font-size:1.05rem;margin-bottom:8px}
.step p{font-size:14.5px;color:var(--graphite);line-height:1.75}

/* ---------- 要点两栏 ---------- */
.two-col{display:grid;grid-template-columns:1fr;gap:28px}
@media(min-width:1024px){.two-col{grid-template-columns:5fr 7fr;gap:56px}}
.note-box{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 24px;box-shadow:var(--sh-1);margin-top:20px;
}
.note-box p{font-size:14.5px;color:var(--ink-2)}
.note-box .tag{margin-bottom:10px}
.check-list{display:grid;gap:14px}
.check-list li{
  display:flex;gap:14px;align-items:flex-start;padding:18px 20px;
  background:#fff;border:1px solid var(--line);border-radius:16px;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.check-list li:hover{border-color:var(--ink);box-shadow:var(--sh-1)}
.check-list .idx{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:13px;color:var(--ink);font-weight:700;flex-shrink:0;padding-top:2px;
}
.check-list strong{display:block;color:var(--ink);font-weight:700;margin-bottom:4px}
.check-list span{font-size:14.5px;color:var(--graphite)}

/* ---------- FAQ ---------- */
.faq-block{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1)}
.faq-item + .faq-item{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  text-align:left;padding:22px 24px;font-size:17px;font-weight:700;color:var(--ink);
  transition:background var(--dur) var(--ease);
}
.faq-q:hover{background:var(--paper-2)}
.faq-q:focus-visible{outline:3px solid rgba(217,249,79,.85);outline-offset:-3px}
.faq-icon{
  position:relative;width:18px;height:18px;flex-shrink:0;
  transition:transform var(--dur) var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--ink);border-radius:2px;
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{
  max-height:0;overflow:hidden;opacity:0;
  transition:max-height 300ms var(--ease),opacity 300ms var(--ease),padding var(--dur) var(--ease);
  padding:0 24px;
}
.faq-item.is-open .faq-a{opacity:1;padding:0 24px 24px}
.faq-a p{font-size:15px;line-height:1.85;color:var(--ink-2)}

/* ---------- 底部 CTA ---------- */
.cta-section{background:var(--dark);color:#fff;position:relative;overflow:hidden}
.cta-section::before{
  content:"";position:absolute;inset:0;opacity:.06;
  background-image:linear-gradient(rgba(255,255,255,.6) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:64px 64px;
}
.cta-inner{position:relative;padding:72px 0}
@media(min-width:1024px){.cta-inner{padding:112px 0}}
.cta-inner h2{color:#fff;font-size:clamp(1.7rem,3.4vw,2.6rem);line-height:1.2;max-width:760px}
.cta-inner p{color:rgba(255,255,255,.72);font-size:16px;max-width:640px;margin-top:16px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.7);border-top:1px solid var(--line-dark)}
.footer-top{padding:40px 0 28px;border-bottom:1px solid var(--line-dark)}
.footer-slogan{color:#fff;font-size:clamp(1.05rem,1.8vw,1.35rem);font-weight:700;letter-spacing:-.01em;max-width:720px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px;padding:44px 0}
@media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}}
.footer-brand b{display:block;color:#fff;font-size:16px;font-weight:800;margin-bottom:12px}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:320px}
.socials{display:flex;gap:10px;margin-top:18px;flex-wrap:wrap}
.socials a{
  font-size:13px;padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid var(--line-dark);color:rgba(255,255,255,.78);
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.socials a:hover{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.footer-col h4{color:#fff;font-size:14px;font-weight:700;letter-spacing:.04em;margin-bottom:16px}
.footer-col ul{display:grid;gap:11px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.66);transition:color var(--dur) var(--ease)}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  padding:22px 0 30px;border-top:1px solid var(--line-dark);
  font-size:13px;letter-spacing:.04em;color:rgba(255,255,255,.5);
}

/* ---------- 滚动出现 ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .55s var(--ease),transform .55s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* ---------- 移动端 Dock ---------- */
@media(max-width:767px){
  body{padding-bottom:78px}
  .dock-wrap{top:auto;bottom:12px;padding:0 12px}
  .dock{
    width:100%;height:auto;flex-wrap:nowrap;gap:10px;
    padding:10px 12px;border-radius:22px;
  }
  .dock-wrap.is-scrolled .dock{width:100%}
  .brand-text i{display:none}
  .brand-text b{font-size:13px}
  .nav-links{margin-left:auto;gap:0}
  .nav-links a{font-size:12.5px;padding:8px 8px}
  .dock-actions .icon-btn{display:none}
  .dock-actions .btn-sm{padding:9px 14px;font-size:12.5px}
}
@media(max-width:520px){
  .brand-text b{max-width:96px;overflow:hidden;text-overflow:ellipsis}
  .nav-links a{padding:8px 6px}
  .dock-actions .btn-sm{display:none}
}