:root{--bg:#f6f8fb;--surface:#fff;--surface-soft:#eef4f5;--text:#18222f;--soft:#617080;--line:#dce3e9;--line2:#c9d3dc;--brand:#174a5b;--brand2:#0e3948;--accent:#247985;--accent-soft:#e7f3f4;--warm:#fbf5e9;--success:#edf7f1;--shadow:0 10px 30px rgba(20,42,56,.07);--r-lg:22px;--r-md:14px;--max:1180px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.6;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}.container{width:min(calc(100% - 40px),var(--max));margin:0 auto}.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.95);border-bottom:1px solid rgba(220,227,233,.9);backdrop-filter:blur(14px)}.header-row{min-height:70px;display:flex;align-items:center;gap:28px}.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}.brand-mark{width:36px;height:36px;border-radius:11px;display:grid;place-items:center;color:#fff;background:linear-gradient(145deg,var(--brand),var(--accent));font-size:17px;font-weight:800;letter-spacing:-1px}.brand-copy strong{display:block;font-size:18px;line-height:1.15;letter-spacing:-.3px}.brand-copy span{display:block;margin-top:2px;font-size:11px;color:var(--soft);letter-spacing:.5px}.desktop-nav{display:flex;align-items:center;gap:2px;flex:1 1 auto}.desktop-nav a,.utility-nav a{min-height:44px;display:inline-flex;align-items:center;padding:0 13px;border-radius:10px;font-size:14px;font-weight:600;color:#344353}.desktop-nav a:hover,.utility-nav a:hover{background:#f2f5f7}.desktop-nav a.is-active{color:var(--brand);background:var(--accent-soft)}.utility-nav{display:flex;align-items:center;margin-left:auto;gap:2px}.member-pill{min-height:38px;display:inline-flex;align-items:center;padding:0 12px;margin-left:4px;border:1px solid var(--line);border-radius:999px;color:var(--brand);background:#fff;font-size:13px;font-weight:650}.mobile-nav-button{display:none;width:44px;height:44px;margin-left:auto;border:1px solid var(--line);border-radius:11px;background:#fff;color:var(--text)}.mobile-nav-button span,.mobile-nav-button:before,.mobile-nav-button:after{content:"";width:18px;height:2px;display:block;margin:4px auto;background:currentColor;border-radius:2px}.mobile-drawer{display:none;border-top:1px solid var(--line);background:#fff}.mobile-drawer.is-open{display:block}.mobile-drawer .container{padding:10px 0 18px}.mobile-drawer a{min-height:46px;display:flex;align-items:center;justify-content:space-between;padding:0 4px;border-bottom:1px solid #eef2f4;font-size:15px;font-weight:600}.mobile-drawer a:after{content:"›";color:#8a98a5;font-size:20px}.hero{padding:64px 0 44px;background:radial-gradient(circle at 88% 8%,rgba(36,121,133,.11),transparent 31%),linear-gradient(180deg,#fbfcfd 0%,var(--bg) 100%)}.hero-grid{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(340px,.7fr);gap:48px;align-items:center}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--accent);font-size:13px;font-weight:750}.eyebrow:before{content:"";width:18px;height:2px;background:currentColor}.hero h1,.page-intro h1{margin:14px 0 18px;font-size:clamp(36px,5vw,58px);line-height:1.1;letter-spacing:-1.8px;font-weight:760}.hero h1 span{color:var(--brand)}.hero-copy{max-width:690px;margin:0;color:var(--soft);font-size:17px}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}.btn{min-height:46px;display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:0 18px;border:1px solid transparent;border-radius:12px;font-weight:680;font-size:14px}.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(23,74,91,.16)}.btn-primary:hover{background:var(--brand2)}.btn-secondary{border-color:var(--line2);background:#fff;color:var(--brand)}.btn-quiet{min-height:44px;border-color:var(--line);background:transparent;color:var(--soft)}.btn-disabled{background:#f2f4f6;color:#8a949d;border-color:#e2e7eb;cursor:default}.hero-footnote{display:flex;flex-wrap:wrap;gap:14px 22px;margin-top:25px;color:#72808e;font-size:12px}.hero-footnote span:before{content:"✓";margin-right:6px;color:var(--accent);font-weight:800}.member-widget{overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow);min-height:310px}.member-widget-shell{padding:22px}.member-widget-shell h2{margin:0 0 4px;font-size:17px}.member-widget-shell>p{margin:0 0 16px;color:var(--soft);font-size:12px}.login-main-area{min-width:0}.login-main{width:100%!important;max-width:none!important;margin:0!important;padding:0!important}.login-title{margin:0 0 10px!important;font-size:16px!important;color:var(--text)!important}.login-form-item{margin:0 0 10px!important}.login-form-item input,.login-main input[type=text],.login-main input[type=password]{width:100%!important;min-height:44px!important;padding:0 12px!important;border:1px solid var(--line2)!important;border-radius:10px!important;background:#fff!important;color:var(--text)!important;outline:none!important}.login-submit,.login-main input[type=submit],.login-main button{min-height:46px!important;border:0!important;border-radius:10px!important;padding:0 18px!important;background:var(--brand)!important;color:#fff!important;font-weight:700!important}.login-main a{color:var(--brand)!important}.login-pattern,.pattern-area{display:none!important}.login-helper{margin:10px 0 2px!important;color:var(--soft)!important;font-size:12px!important;line-height:1.5!important}.login-actions{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0 4px}.login-actions .login-action-link{display:inline-flex;align-items:center;justify-content:center;min-height:38px;padding:0 12px;border:1px solid var(--line2);border-radius:8px;background:#fff;color:var(--brand);font-size:13px;font-weight:600;text-decoration:none}.login-actions .login-action-link:hover{border-color:var(--brand);background:#f2f8f8}.login-card-link{margin-top:4px;font-size:12px;color:var(--soft)}.login-card-link a{color:var(--soft);text-decoration:none;border-bottom:1px dashed var(--line2)}.login-card-link a:hover{color:var(--brand);border-bottom-color:var(--brand)}.section{padding:56px 0}.section.compact{padding:40px 0}.section-white{background:#fff}.section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:24px}.section-heading h2{margin:0;font-size:27px;letter-spacing:-.5px}.section-heading p{margin:6px 0 0;color:var(--soft);font-size:14px;max-width:700px}.section-link{color:var(--brand);font-size:13px;font-weight:700;white-space:nowrap}.task-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px}.task-card{min-height:160px;display:flex;flex-direction:column;justify-content:space-between;padding:20px;border:1px solid var(--line);border-radius:var(--r-md);background:#fff}.task-card h3{margin:18px 0 4px;font-size:17px}.task-card p{margin:0;color:var(--soft);font-size:12px}.task-card .arrow{margin-top:17px;color:var(--brand);font-weight:750;font-size:13px}.resource-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.resource-card{min-width:0;display:grid;grid-template-columns:1fr auto;gap:18px;padding:20px;border:1px solid var(--line);border-radius:var(--r-md);background:#fff}.resource-card.priority-card{border-color:#c4d8dc;background:linear-gradient(135deg,#fff 0%,#f1f8f8 100%);box-shadow:0 10px 28px rgba(23,74,91,.08)}.resource-card.priority-card h3{font-size:18px;color:var(--brand2)}.resource-card h3{margin:0 0 7px;font-size:16px}.resource-card p{margin:0;color:var(--soft);font-size:13px}.resource-card .resource-mobile-note{margin-top:10px;font-size:12px;color:#526a70}.resource-card .resource-action{align-self:center}.badges{display:flex;flex-wrap:wrap;gap:6px;margin:10px 0 0}.badge{display:inline-flex;align-items:center;min-height:24px;padding:0 8px;border-radius:999px;background:#f1f4f6;color:#657380;font-size:11px;font-weight:650}.badge.open{background:var(--success);color:#3b6b50}.badge.official{background:var(--accent-soft);color:var(--brand)}.badge.member{background:var(--warm);color:#7d612d}.badge.recommend{background:#edf1fb;color:#465d8d}.variant-actions{display:flex;flex-wrap:wrap;gap:7px;margin-top:12px}.variant-actions .btn{min-height:44px;padding:0 13px;font-size:12px}.page-intro{padding:52px 0 34px;background:linear-gradient(180deg,#fbfcfd 0%,var(--bg) 100%)}.page-intro-grid{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:30px;align-items:end}.page-intro h1{font-size:clamp(34px,4vw,50px);margin-bottom:13px}.page-intro p{max-width:760px;margin:0;color:var(--soft);font-size:15px}.page-intro-stat{min-width:190px;padding:16px 18px;border:1px solid var(--line);border-radius:13px;background:#fff}.page-intro-stat strong{display:block;font-size:22px;color:var(--brand)}.page-intro-stat span{display:block;color:var(--soft);font-size:11px}.category-bar{position:sticky;top:70px;z-index:35;background:rgba(246,248,251,.95);backdrop-filter:blur(10px)}.category-scroll{display:flex;gap:8px;overflow-x:auto;padding:10px 0;scrollbar-width:none}.category-scroll::-webkit-scrollbar{display:none}.category-chip{flex:0 0 auto;min-height:44px;display:inline-flex;align-items:center;justify-content:center;padding:0 13px;border:1px solid var(--line);border-radius:999px;background:#fff;color:#556574;font-size:12px;font-weight:650}.category-chip.is-active{background:var(--brand);color:#fff;border-color:var(--brand)}.library-layout{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:28px;align-items:start}.library-main{min-width:0}.library-section{scroll-margin-top:140px;margin-bottom:42px}.library-section-head{margin-bottom:14px}.library-section-head h2{margin:0;font-size:22px}.library-section-head p{margin:5px 0 0;color:var(--soft);font-size:13px}.library-section .resource-grid{grid-template-columns:1fr}.side-panel{position:sticky;top:138px;padding:18px;border:1px solid var(--line);border-radius:var(--r-md);background:#fff}.side-panel+.side-panel{margin-top:14px}.side-panel h3{margin:0 0 8px;font-size:15px}.side-panel p{margin:0;color:var(--soft);font-size:12px}.side-panel ul{margin:12px 0 0;padding:0;list-style:none}.side-panel li{border-top:1px solid #eef1f3}.side-panel li:first-child{border-top:0}.side-panel a{min-height:44px;display:flex;align-items:center;justify-content:space-between;color:#425260;font-size:12px}.side-panel a:after{content:"›";color:#9aa6af;font-size:17px}.notice-box{padding:16px 18px;border-left:3px solid var(--accent);border-radius:0 11px 11px 0;background:var(--accent-soft)}.notice-box h3{margin:0 0 4px;font-size:14px}.notice-box p{margin:0;color:#526a70;font-size:12px}.help-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.help-card{padding:19px;border:1px solid var(--line);border-radius:var(--r-md);background:#fff}.help-card small{color:var(--accent);font-weight:700}.help-card h3{margin:8px 0 6px;font-size:15px}.help-card p{margin:0;color:var(--soft);font-size:12px}.site-footer{margin-top:50px;background:#102f3b;color:rgba(255,255,255,.72)}.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,.7fr);gap:32px;padding:44px 0 34px}.footer-brand strong{display:block;color:#fff;font-size:17px}.footer-brand p{max-width:420px;margin:9px 0 0;font-size:12px}.footer-group strong{display:block;margin-bottom:9px;color:#fff;font-size:12px}.footer-group a{display:block;padding:4px 0;font-size:12px}.footer-bottom{padding:17px 0 24px;border-top:1px solid rgba(255,255,255,.12);font-size:11px;display:flex;justify-content:space-between;gap:20px}@media(max-width:1040px){.desktop-nav,.utility-nav{display:none}.mobile-nav-button{display:inline-block}.task-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.library-layout{grid-template-columns:1fr}.side-column{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.side-panel{position:static}.side-panel+.side-panel{margin-top:0}}@media(max-width:820px){.container{width:min(calc(100% - 28px),var(--max))}.header-row{min-height:64px}.brand-copy span{display:none}.hero{padding:42px 0 36px}.hero-grid{grid-template-columns:1fr;gap:30px}.hero h1{font-size:clamp(34px,10vw,48px)}.page-intro-grid{grid-template-columns:1fr}.page-intro-stat{min-width:0;width:100%}.task-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.resource-grid{grid-template-columns:1fr}.help-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.category-bar{top:64px}}@media(max-width:520px){.container{width:calc(100% - 24px)}.brand-mark{width:34px;height:34px}.brand-copy strong{font-size:16px}.hero{padding-top:34px}.hero-copy{font-size:15px}.hero-actions{display:grid;grid-template-columns:1fr 1fr}.hero-actions .btn{width:100%;padding:0 12px}.hero-actions .btn:first-child{grid-column:1/-1}.hero-footnote{display:grid;gap:5px}.section{padding:42px 0}.section-heading{align-items:flex-start}.section-heading h2{font-size:23px}.section-link{display:none}.task-grid{grid-template-columns:1fr;gap:10px}.task-card{min-height:124px;padding:17px}.resource-card{display:block;padding:17px}.resource-card .resource-action{margin-top:14px}.resource-card .resource-action .btn{width:100%}.page-intro{padding:35px 0 25px}.page-intro h1{font-size:34px}.library-section{scroll-margin-top:130px}.side-column{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr;gap:22px}.footer-brand{grid-column:auto}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:5px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}
/* Member Center UX V1 — scoped presentation closeout. */
.member-center-v1{position:relative;padding-top:8px}.member-center-v1 .member-center-shell{max-width:1040px;margin:0 auto}.member-center-v1 .section{scroll-margin-top:92px}.member-center-v1 .section-heading{align-items:flex-start;margin-bottom:18px}.member-center-v1 .section-heading h2{font-size:24px;letter-spacing:-.4px}.member-center-v1 .section-heading p{font-size:13px}.member-center-v1 .resource-grid{gap:18px}.member-center-v1 .resource-card{min-height:166px;padding:22px;box-shadow:0 8px 24px rgba(20,42,56,.045);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}.member-center-v1 .resource-card:hover{transform:translateY(-2px);border-color:#b7cbd1;box-shadow:0 14px 30px rgba(20,42,56,.09)}.member-center-v1 .resource-card.priority-card{border-color:#b9d2d6;background:linear-gradient(135deg,#fff 0%,#eef8f8 100%)}.member-center-v1 .resource-card h3{font-size:17px;letter-spacing:-.15px}.member-center-v1 .resource-card.priority-card h3{font-size:19px}.member-center-v1 .resource-card p{font-size:13px}.member-center-v1 .resource-card .resource-mobile-note{font-size:12px;color:#49666d}.member-center-v1 .resource-action{min-width:148px}.member-center-v1 .resource-action .btn{width:100%;white-space:nowrap}.member-center-v1 .task-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.member-center-v1 .task-card{min-height:184px;padding:22px;box-shadow:0 8px 24px rgba(20,42,56,.045);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}.member-center-v1 .task-card:hover{transform:translateY(-2px);border-color:#b7cbd1;box-shadow:0 14px 30px rgba(20,42,56,.09)}.member-center-v1 .task-card h3{margin-top:15px;font-size:18px;letter-spacing:-.15px}.member-center-v1 .task-card p{font-size:13px}.member-center-v1 .task-card .arrow{margin-top:20px}.member-center-v1 .badge{letter-spacing:.05px}.member-center-v1 .page-intro{padding-bottom:28px}.member-center-v1 .page-intro h1{letter-spacing:-1.2px}.member-center-v1 .section+.section{padding-top:28px}@media(max-width:820px){.member-center-v1{padding-top:0}.member-center-v1 .member-center-shell{max-width:none}.member-center-v1 .resource-card{min-height:0}.member-center-v1 .task-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:520px){.member-center-v1 .section-heading h2{font-size:22px}.member-center-v1 .resource-card{padding:18px}.member-center-v1 .resource-action{min-width:0}.member-center-v1 .task-grid{grid-template-columns:1fr;gap:12px}.member-center-v1 .task-card{min-height:0;padding:18px}}
/* 51XIALUNWEN locked-state UI V1 — presentation-only shared language. */
.member-locked-card.is-member-locked,
.member-locked-card.member-locked-card--legacy {
  position: relative;
  overflow: hidden;
  border-color: #bfd5d8;
  background: linear-gradient(135deg, #fff 0%, #f1f8f8 100%);
  box-shadow: 0 10px 28px rgba(23, 74, 91, .08);
}
.member-locked-card.is-member-locked::before,
.member-locked-card.member-locked-card--legacy::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: linear-gradient(180deg, var(--accent), var(--brand));
}
.member-locked-card .papermao-locked,
.member-locked-card .duxiu-projection {
  margin-top: 16px;
  padding: 16px;
  border: 1px solid #cfe0e2;
  border-radius: 16px;
  background: rgba(255, 255, 255, .72);
  box-shadow: 0 5px 16px rgba(23, 74, 91, .045);
}
.member-locked-card .papermao-locked-tag,
.member-locked-card .member-locked-card__eyebrow,
.member-locked-state-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 25px;
  padding: 0 9px;
  border: 1px solid #c8dfe1;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--brand);
  font-size: 11px;
  font-weight: 750;
  line-height: 1;
}
.member-lock-icon {
  width: 36px;
  height: 36px;
  display: inline-grid;
  place-items: center;
  flex: 0 0 36px;
  border: 1px solid #c8dfe1;
  border-radius: 11px;
  background: var(--accent-soft);
  color: var(--brand);
}
.member-lock-icon svg {
  width: 18px;
  height: 18px;
}
.member-lock-icon--small {
  width: 20px;
  height: 20px;
  flex-basis: 20px;
  border: 0;
  border-radius: 6px;
  background: transparent;
}
.member-lock-icon--small svg {
  width: 15px;
  height: 15px;
}
.member-locked-card .papermao-locked-tag {
  padding-left: 6px;
  color: var(--brand);
}
.member-locked-card .papermao-locked-mocks {
  gap: 8px;
  margin: 15px 0 14px;
}
.member-locked-card .papermao-mock-btn {
  min-height: 44px;
  border: 1px solid #d5e0e3;
  border-radius: 11px;
  background: #f7fafb;
  color: #87969e;
}
.member-locked-card .papermao-locked-hint,
.member-locked-card__note,
.member-locked-state-note {
  display: flex;
  align-items: flex-start;
  gap: 7px;
  margin: 0 0 14px;
  color: #627780;
  font-size: 12px;
  line-height: 1.55;
}
.member-locked-card .papermao-locked-actions,
.member-locked-card__actions,
.member-locked-state .tool-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 0;
}
.member-locked-card .papermao-locked-actions .btn,
.member-locked-card__actions .btn,
.member-locked-state .tool-actions .btn {
  min-height: 42px;
  padding: 0 15px;
  font-size: 13px;
}
.member-locked-card .papermao-locked-actions .btn-quiet,
.member-locked-card__actions .btn-quiet,
.member-locked-state .tool-actions .btn-quiet {
  border-color: #c9d8dc;
  background: #fff;
  color: var(--brand);
}
.member-locked-card__heading,
.member-locked-state {
  min-width: 0;
  display: flex;
  align-items: flex-start;
  gap: 12px;
}
.member-locked-card__heading > div,
.member-locked-state-copy {
  min-width: 0;
}
.member-locked-card__heading h3 {
  margin: 0 0 5px;
}
.member-locked-card__heading .member-locked-card__eyebrow {
  margin-bottom: 7px;
}
.member-locked-card__actions {
  margin-top: 16px;
}
.member-locked-card__legacy {
  margin-top: 16px;
  padding-top: 13px;
  border-top: 1px solid #d9e5e7;
}
.member-locked-card__legacy-label {
  display: block;
  margin-bottom: 8px;
  color: #667b82;
  font-size: 12px;
  font-weight: 650;
}
.member-locked-card--legacy .variant-actions {
  margin-top: 0;
}
.member-locked-card--legacy .variant-actions .btn {
  min-height: 40px;
  background: #fff;
  border-color: #c9d8dc;
  color: var(--brand);
}
.member-locked-state {
  justify-content: space-between;
  width: 100%;
}
.member-locked-state-copy {
  flex: 1 1 auto;
}
.member-locked-state-copy h3,
.member-locked-state-copy p {
  margin-left: 0;
}
.member-locked-state-copy h3 {
  margin-top: 8px;
  margin-bottom: 5px;
}
.member-locked-state-copy p {
  margin-bottom: 0;
}
.member-locked-state .tool-actions {
  flex: 0 0 auto;
  align-self: flex-end;
}
.member-locked-state-note {
  margin: 12px 0 0;
  padding-top: 12px;
  border-top: 1px solid #dce8ea;
}
.member-tools-body .member-locked-state {
  align-items: center;
}
.member-tools-body .member-locked-state .tool-actions {
  align-self: center;
}
@media (max-width: 520px) {
  .member-locked-card .papermao-locked,
  .member-locked-card .duxiu-projection {
    padding: 14px;
  }
  .member-locked-card .papermao-locked-mocks {
    gap: 6px;
  }
  .member-locked-card .papermao-mock-btn {
    min-height: 40px;
    font-size: 12px;
  }
  .member-locked-card .papermao-locked-actions,
  .member-locked-card__actions,
  .member-locked-state .tool-actions {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
  }
  .member-locked-card .papermao-locked-actions .btn,
  .member-locked-card__actions .btn,
  .member-locked-state .tool-actions .btn {
    width: 100%;
  }
  .member-locked-state,
  .member-locked-card__heading {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
  }
  .member-locked-card__heading {
    grid-template-columns: 36px minmax(0, 1fr);
  }
  .member-locked-state .tool-actions {
    grid-column: 1 / -1;
    margin-top: 14px;
  }
  .member-tools-body .member-locked-state .tool-actions {
    margin-top: 14px;
  }
  .member-locked-state-note {
    display: block;
  }
}