*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,"PingFang SC","Microsoft YaHei",sans-serif;color:#1f2933;background:#fff;line-height:1.6}a{text-decoration:none;color:inherit}.container{width:min(1120px,92%);margin:0 auto}.topbar{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid #e5e7eb}.nav{height:64px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;height:32px}.brand img{height:32px;width:auto;display:block}.menu{display:flex;gap:20px;color:#374151}.menu a{display:flex;flex-direction:column;align-items:center;line-height:1.15;padding:6px 0;transition:all .15s}.menu a .en{font-size:14px;font-weight:600;color:#374151}.menu a .zh{font-size:11px;color:#64748b;margin-top:2px}.menu a.active .en,.menu a:hover .en{color:#1F3864}.menu a.active .zh,.menu a:hover .zh{color:#1F3864}.menu a.active .en{font-weight:700}.hero{padding:96px 0 72px;background:linear-gradient(135deg,#f8fafc,#eef2f7)}.eyebrow{font-size:13px;letter-spacing:.18em;text-transform:uppercase;color:#64748b;font-weight:700}.hero h1{font-size:clamp(38px,6vw,72px);line-height:1.05;margin:18px 0 20px;letter-spacing:-.04em}.hero p{font-size:20px;max-width:760px;color:#4b5563}.btns{margin-top:34px;display:flex;gap:14px;flex-wrap:wrap}.btn{display:inline-flex;padding:13px 22px;border-radius:999px;border:1px solid #111827;background:#111827;color:#fff;font-weight:700;cursor:pointer;font-size:14px}.btn.secondary{background:#fff;color:#111827}.btn.small{padding:9px 16px;font-size:13px}.btn.accent{background:#8B6F47;color:#fff;border-color:#8B6F47}.btn.accent:hover{background:#6B543A;border-color:#6B543A}.section{padding:72px 0;border-bottom:1px solid #eef2f7}.section.tight{padding:54px 0}.section h2{font-size:34px;margin:0 0 14px}.section h2 .sub{display:block;font-size:18px;color:#6b7280;font-weight:500;margin-top:8px;letter-spacing:0}.muted{color:#6b7280}.lead{font-size:18px;color:#4b5563;max-width:780px}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:28px}.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:28px}.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:28px}.card{border:1px solid #e5e7eb;border-radius:22px;padding:26px;background:#fff;min-height:170px;display:flex;flex-direction:column;gap:10px}.card h3{margin:0 0 10px;font-size:22px}.card .grow{flex:1}.card .meta{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:#64748b;font-weight:700}.placeholder{height:260px;border-radius:24px;background:repeating-linear-gradient(45deg,#f3f4f6,#f3f4f6 12px,#e5e7eb 12px,#e5e7eb 24px);display:flex;align-items:center;justify-content:center;color:#6b7280;font-weight:700;text-align:center;padding:20px}.placeholder.sm{height:160px}.placeholder.xs{height:120px;font-size:13px;border-radius:16px}.two{display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:center}.list{padding-left:18px}.list li{margin:6px 0}.footer{padding:42px 0 28px;background:#111827;color:#d1d5db}.footer .container{display:flex;flex-direction:column;gap:24px}.footer-row{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;align-items:flex-start}.footer-brand strong{color:#fff;font-size:18px;letter-spacing:.08em}.footer-meta{font-size:13px;color:#9ca3af}.footer-meta a{color:#d1d5db}.social-row{display:flex;gap:14px;align-items:center}.social-row .label{font-size:13px;color:#9ca3af;margin-right:6px}.social{display:inline-flex;width:38px;height:38px;border-radius:999px;background:#1f2937;color:#fff;align-items:center;justify-content:center;border:1px solid #374151;overflow:hidden}.social:hover{background:#0b1220}.social svg{width:18px;height:18px;display:block;fill:#fff}.social.wx{background:#07c160;border-color:#07c160}.social.dy{background:#000;border-color:#000}.social.ch{background:#07c160;border-color:#07c160}.social.ig{background:linear-gradient(135deg,#f09433 0%,#e6683c 25%,#dc2743 50%,#cc2366 75%,#bc1888 100%);border-color:transparent}.social.in{background:#0a66c2;border-color:#0a66c2}.lang{font-size:13px;color:#6b7280;margin-top:10px}.form{display:grid;gap:14px;margin-top:24px}.form input,.form textarea,.form select{width:100%;border:1px solid #d1d5db;border-radius:14px;padding:14px;font:inherit;background:#fff}.form textarea{min-height:130px}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}.note{background:#fffbeb;border:1px solid #fde68a;border-radius:18px;padding:16px;color:#92400e;margin-top:22px;font-size:14px}.note.info{background:#eff6ff;border-color:#bfdbfe;color:#1e3a8a}.colors{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;margin-top:22px}.swatch{border:1px solid #e5e7eb;border-radius:16px;padding:16px;min-height:90px;font-size:13px}.swatch i{display:block;width:32px;height:32px;border-radius:999px;margin-bottom:10px;border:1px solid #d1d5db}.pillrow{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.pill{border:1px solid #e5e7eb;border-radius:999px;padding:7px 14px;font-size:13px;background:#fff}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:28px;counter-reset:step}.step{border:1px solid #e5e7eb;border-radius:22px;padding:24px;background:#fff;position:relative}.step .num{width:34px;height:34px;border-radius:999px;background:#111827;color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;margin-bottom:12px}.step h4{margin:0 0 6px;font-size:17px}.step p{margin:0;color:#6b7280;font-size:14px}.timeline{counter-reset:tl;margin-top:32px;display:flex;flex-direction:column;gap:14px}.tl{display:grid;grid-template-columns:64px 1fr;gap:18px;align-items:flex-start;border:1px solid #e5e7eb;border-radius:18px;padding:18px 22px;background:#fff}.tl .num{counter-increment:tl;width:48px;height:48px;border-radius:14px;background:#f3f4f6;color:#111827;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:18px}.tl .num::before{content:counter(tl)}.tl h4{margin:0 0 6px;font-size:18px}.tl p{margin:0;color:#6b7280;font-size:14px}.tl ul{margin:8px 0 0;padding-left:18px;color:#4b5563;font-size:14px}.tl ul li{margin:3px 0}.carousel{position:relative;margin-top:18px;border:1px solid #e5e7eb;border-radius:24px;background:#fafafa;padding:18px}.carousel .track{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}.carousel .slide{aspect-ratio:4/3;border-radius:18px;background:repeating-linear-gradient(45deg,#f3f4f6,#f3f4f6 10px,#e5e7eb 10px,#e5e7eb 20px);display:flex;align-items:flex-end;justify-content:center;color:#6b7280;font-weight:700;font-size:13px;padding:10px;text-align:center}.carousel .nav{display:flex;justify-content:space-between;align-items:center;margin-top:14px;color:#6b7280;font-size:13px}.carousel .nav .dots{display:flex;gap:6px}.carousel .dot{width:8px;height:8px;border-radius:999px;background:#d1d5db}.carousel .dot.on{background:#111827}/* Configure */.config{display:grid;grid-template-columns:1.05fr .95fr;gap:28px;align-items:flex-start;margin-top:24px}.config .preview{border:1px solid #e5e7eb;border-radius:24px;background:#fafafa;height:380px;display:flex;align-items:center;justify-content:center;color:#6b7280;font-weight:700;text-align:center;padding:20px}.config .panel{border:1px solid #e5e7eb;border-radius:24px;padding:24px;background:#fff}.config .panel h3{margin:0 0 12px;font-size:20px}.color-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:10px;margin-bottom:18px}.color-grid .c{aspect-ratio:1/1;border-radius:14px;border:2px solid #e5e7eb;cursor:pointer;position:relative;display:flex;align-items:flex-end;justify-content:center;font-size:11px;color:#fff;text-shadow:0 1px 2px rgba(0,0,0,.5);padding:6px}.color-grid .c.on{border-color:#111827;box-shadow:0 0 0 2px #fff,0 0 0 4px #111827}.specs{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:10px}.specs label{font-size:13px;color:#374151;display:flex;flex-direction:column;gap:6px}.specs select,.specs input{border:1px solid #d1d5db;border-radius:12px;padding:10px 12px;font:inherit;background:#fff}.config .total{margin-top:18px;padding-top:18px;border-top:1px dashed #e5e7eb;display:flex;justify-content:space-between;align-items:center;font-size:14px;color:#374151}.config .total strong{font-size:24px;color:#111827}/* Patents */.patents{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:24px}.patent{border:1px solid #e5e7eb;border-radius:18px;padding:18px;background:#fff;text-align:center}.patent .medal{width:54px;height:54px;border-radius:999px;background:linear-gradient(135deg,#fcd34d,#f59e0b);color:#7c2d12;display:flex;align-items:center;justify-content:center;font-weight:800;margin:0 auto 10px}/* C-Series color page reference */.refnote{font-size:13px;color:#6b7280;margin-top:10px}@media(max-width:760px){.nav{height:auto;padding:18px 0;align-items:flex-start}.menu{gap:10px;flex-wrap:wrap;justify-content:flex-end;font-size:13px}.grid,.grid-2,.grid-4,.colors,.config,.steps,.patents,.two,.color-grid,.form-row,.specs{grid-template-columns:1fr}.carousel .track{grid-template-columns:repeat(2,1fr)}.hero{padding:64px 0}.section{padding:54px 0}.footer-row{display:block}}
/* ============ G-BLINDS Auth System (2026-09-21) ============ */

/* 右上角登录按钮 */
.auth-btn{margin-left:auto;padding:8px 18px;border:1px solid #1F3864;color:#1F3864;border-radius:20px;font-size:13px;font-weight:600;background:transparent;cursor:pointer;text-decoration:none;transition:all .2s;display:inline-flex;align-items:center;gap:8px;white-space:nowrap}.auth-btn:hover{background:#1F3864;color:#fff}.auth-btn.logged-in{padding:6px 14px 6px 6px;border-color:transparent;background:#f3f4f6;color:#1F3864}.auth-btn.logged-in:hover{background:#e5e7eb;color:#1F3864}.auth-btn .avatar{width:28px;height:28px;border-radius:50%;background:#1F3864;color:#fff;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700}
.auth-dropdown{position:absolute;top:calc(100% + 8px);right:0;background:#fff;border-radius:10px;box-shadow:0 8px 28px rgba(0,0,0,.14);min-width:220px;display:none;z-index:1000;overflow:hidden;border:1px solid #e5e7eb}.auth-dropdown.show{display:block}.auth-dropdown a,.auth-dropdown button{display:flex;width:100%;text-align:left;padding:12px 18px;background:none;border:none;color:#1F3864;text-decoration:none;font-size:14px;cursor:pointer;font-family:inherit;align-items:center;gap:10px}.auth-dropdown a:hover,.auth-dropdown button:hover{background:#f5f5f5}.auth-dropdown .divider{height:1px;background:#e5e7eb;margin:4px 0}.auth-dropdown .arrow{display:inline-block;width:8px;height:8px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg);transition:transform .2s;margin-left:4px}.auth-btn.logged-in.open .arrow{transform:rotate(-135deg)}

/* 登录墙 (shop.html) */
.auth-wall{position:relative;padding:60px 24px;background:linear-gradient(135deg,#f5f5f0,#fff);border-radius:18px;margin:40px auto;max-width:1100px;border:1px solid #e5e7eb}
.auth-wall-header{text-align:center;margin-bottom:36px}
.auth-wall-header .eyebrow{color:#1F3864}
.auth-wall-header h2{margin:8px 0 12px}
.auth-wall-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px}
.auth-wall-card{background:#fff;border-radius:14px;padding:36px;box-shadow:0 4px 16px rgba(0,0,0,.05);border:1px solid #f3f4f6}
.auth-wall-card h3{margin:0 0 6px;font-size:22px;color:#1F3864}
.auth-wall-card .subtitle{font-size:13px;color:#64748b;margin-bottom:24px}
.auth-wall-card .field{margin-bottom:14px}
.auth-wall-card .field label{display:block;font-size:13px;color:#374151;margin-bottom:6px;font-weight:500}
.auth-wall-card .field input{width:100%;padding:12px 16px;border:1px solid #d4d4d4;border-radius:10px;font-size:14px;font-family:inherit;box-sizing:border-box;background:#fff}
.auth-wall-card .field input:focus{outline:none;border-color:#1F3864;box-shadow:0 0 0 3px rgba(31,56,100,.1)}
.auth-wall-card .btn-submit{width:100%;padding:14px;background:#1F3864;color:#fff;border:none;border-radius:10px;font-size:15px;font-weight:600;cursor:pointer;font-family:inherit;margin-top:8px}
.auth-wall-card .btn-submit:hover{background:#15294a}
.auth-wall-card .btn-submit:disabled{background:#9ca3af;cursor:not-allowed}
.auth-wall-card .form-error,.auth-wall-card .form-success{padding:12px 16px;border-radius:8px;font-size:13px;margin-bottom:16px;display:none}
.auth-wall-card .form-error.show{display:block;background:#fef2f2;color:#991b1b;border:1px solid #fecaca}
.auth-wall-card .form-success.show{display:block;background:#f0fdf4;color:#166534;border:1px solid #bbf7d0}
.auth-wall-card .field-error{color:#dc2626;font-size:12px;margin:-8px 0 8px;display:none;padding-left:4px}
.auth-wall-card .field-error.show{display:block}
.auth-wall-card .invite-hint{font-size:12px;color:#64748b;margin-top:-8px;margin-bottom:14px;padding-left:4px}

/* 已登录状态（shop.html 内的提示区） */
.auth-status{padding:48px 32px;background:linear-gradient(135deg,#eff6ff,#fff);border:1px solid #bfdbfe;border-radius:14px;margin:40px auto;max-width:900px;text-align:center}
.auth-status h2{color:#1F3864;margin:0 0 8px}
.auth-status .price-badge{display:inline-block;margin-top:16px;padding:10px 22px;background:#1F3864;color:#fff;border-radius:999px;font-size:14px;font-weight:600}

/* 内容锁定状态（未登录时给其他内容的提示） */
.auth-locked-overlay{position:relative}
.auth-locked-overlay::after{content:"";position:absolute;inset:0;background:rgba(255,255,255,.7);backdrop-filter:blur(2px);z-index:5;pointer-events:none;border-radius:inherit}
.auth-locked-overlay .auth-lock-msg{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);z-index:10;background:#fff;padding:18px 24px;border-radius:12px;box-shadow:0 8px 24px rgba(0,0,0,.12);text-align:center;max-width:340px}
.auth-locked-overlay .auth-lock-msg strong{color:#1F3864;display:block;margin-bottom:6px}

/* 账户页 / Admin 页 通用样式 */
.account-page{max-width:720px;margin:40px auto;padding:40px;background:#fff;border-radius:14px;box-shadow:0 4px 16px rgba(0,0,0,.06);border:1px solid #f3f4f6}
.account-page h2{color:#1F3864;margin:0 0 8px}
.account-page .sub{color:#64748b;font-size:14px;margin-bottom:32px}
.account-info-row{display:flex;padding:14px 0;border-bottom:1px solid #f3f4f6;align-items:center}
.account-info-row .label{width:140px;color:#64748b;font-size:13px;flex-shrink:0}
.account-info-row .value{flex:1;color:#1F2933;font-weight:500;font-size:14px}
.account-actions{margin-top:32px;display:flex;gap:12px;flex-wrap:wrap}

/* Admin 仪表盘 */
.admin-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:32px}
.admin-stat{background:linear-gradient(135deg,#f8fafc,#fff);border:1px solid #e5e7eb;border-radius:12px;padding:24px}
.admin-stat .num{font-size:36px;font-weight:800;color:#1F3864;letter-spacing:-.02em}
.admin-stat .label{font-size:13px;color:#64748b;margin-top:4px}
.admin-table{width:100%;border-collapse:collapse;margin-top:16px;font-size:13px}
.admin-table th{text-align:left;padding:10px 12px;background:#f8fafc;border-bottom:1px solid #e5e7eb;color:#374151;font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.05em}
.admin-table td{padding:12px;border-bottom:1px solid #f3f4f6;color:#1F2933}
.admin-table tr:hover td{background:#fafafa}

/* 响应式：登录墙在窄屏变单列 */
@media(max-width:760px){.auth-wall-grid{grid-template-columns:1fr;gap:24px}.auth-wall{padding:32px 16px}.auth-wall-card{padding:24px}.admin-stats{grid-template-columns:1fr}.account-info-row{flex-direction:column;align-items:flex-start;gap:4px}.account-info-row .label{width:auto}}

/* shop.html 登录锁定：未登录时隐藏主内容 */
body.shop-locked main>section{display:none}body.shop-locked main #authWall{display:block}body.shop-locked main{padding-top:0}

/* 全局登录/注册弹窗 (auth modal) */
.auth-modal-backdrop{position:fixed;inset:0;background:rgba(15,23,42,.55);backdrop-filter:blur(4px);z-index:9998;animation:fadeIn .15s ease}
.auth-modal-box{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);background:#fff;border-radius:16px;box-shadow:0 20px 60px rgba(0,0,0,.3);width:min(440px,92%);max-height:90vh;overflow-y:auto;z-index:9999;animation:modalIn .2s ease}
.auth-modal-close{position:absolute;top:12px;right:16px;background:none;border:none;font-size:28px;color:#64748b;cursor:pointer;line-height:1;padding:0;width:32px;height:32px;border-radius:8px;display:flex;align-items:center;justify-content:center;transition:all .15s}
.auth-modal-close:hover{background:#f3f4f6;color:#1F2933}
.auth-modal-tabs{display:flex;border-bottom:1px solid #e5e7eb;padding:0 24px}
.auth-modal-tab{flex:1;padding:18px 0;background:none;border:none;border-bottom:3px solid transparent;font-size:15px;font-weight:600;color:#64748b;cursor:pointer;transition:all .15s;margin-bottom:-1px}
.auth-modal-tab:hover{color:#1F2933}
.auth-modal-tab.on{color:#1F3864;border-bottom-color:#1F3864}
.auth-modal-body{padding:28px 28px 24px}
.auth-modal-body .form-error,.auth-modal-body .form-success{padding:10px 14px;border-radius:8px;font-size:13px;margin-bottom:14px;display:none}
.auth-modal-body .form-error.show{display:block;background:#fef2f2;color:#991b1b;border:1px solid #fecaca}
.auth-modal-body .form-success.show{display:block;background:#f0fdf4;color:#166534;border:1px solid #bbf7d0}
.auth-modal-body .field{margin-bottom:12px}
.auth-modal-body .field label{display:block;font-size:13px;color:#374151;margin-bottom:5px;font-weight:500}
.auth-modal-body .field input{width:100%;padding:11px 14px;border:1px solid #d4d4d4;border-radius:8px;font-size:14px;font-family:inherit;box-sizing:border-box;background:#fff}
.auth-modal-body .field input:focus{outline:none;border-color:#1F3864;box-shadow:0 0 0 3px rgba(31,56,100,.1)}
.auth-modal-body .field-error{color:#dc2626;font-size:12px;margin:-6px 0 8px;display:none;padding-left:4px}
.auth-modal-body .field-error.show{display:block}
.auth-modal-body .invite-hint{font-size:12px;color:#64748b;margin-top:4px;padding-left:4px}
.auth-modal-body .btn-submit{width:100%;padding:13px;background:#1F3864;color:#fff;border:none;border-radius:8px;font-size:15px;font-weight:600;cursor:pointer;font-family:inherit;margin-top:8px}
.auth-modal-body .btn-submit:hover{background:#15294a}
.auth-modal-body .btn-submit:disabled{background:#9ca3af;cursor:not-allowed}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes modalIn{from{opacity:0;transform:translate(-50%,-48%) scale(.96)}to{opacity:1;transform:translate(-50%,-50%) scale(1)}}