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br{display:none}.feature-grid{grid-template-columns:1fr;gap:16px}.about-description br{display:none}.modal-content{padding:24px;margin:20px}.idea-form-card{padding:40px 20px}.idea-form-title{font-size:1.125rem}.idea-form-subtitle br{display:none}.thanks-card{padding:40px 20px}.thanks-title{font-size:1.125rem}.thanks-subtitle br{display:none}.company-hero-title{font-size:1.375rem}.company-features{grid-template-columns:1fr}.company-hero-buttons{flex-direction:column}.company-hero-buttons .btn{min-width:100%}.section-title-large{font-size:1.25rem}.strength-item{flex-direction:column;gap:8px}.flow-step-header{flex-wrap:wrap}.cost-detail br,.cost-highlight br,.cost-text br{display:none}.company-contact-card{padding:40px 20px}.company-contact-title{font-size:1.125rem}.company-contact-subtitle br{display:none}.company-contact-info{padding:0}.legal-title{font-size:1.25rem}.legal-content{padding:0 16px}.idea-cards-grid{grid-template-columns:1fr}.idea-list-title{font-size:1.25rem}.idea-list-subtitle br{display:none}.admin-cards{grid-template-columns:1fr}.admin-title{font-size:1.375rem}.register-form-card{padding:40px 20px}.register-title{font-size:1.375rem}.register-subtitle br{display:none}.optional-section{margin-inline-start:-20px;margin-inline-end:-20px;padding:24px 20px}.login-form-card{padding:40px 20px}.login-title{font-size:1.375rem}.login-subtitle br{display:none}.password-reset-card{padding:40px 20px}.password-reset-title{font-size:1.25rem}.password-reset-subtitle br{display:none}.like-benefit-info{flex-direction:column}.like-benefit-status{flex-direction:row;width:100%;justify-content:center}.mypage-title{font-size:1.375rem}.profile-info{flex-direction:column;align-items:center;text-align:center}.profile-item{flex-direction:column;gap:4px}.profile-label{width:auto}.my-idea-item{flex-direction:column;align-items:flex-start}.my-idea-meta{flex-direction:column;gap:4px}.bank-info{grid-template-columns:1fr}.mypage-edit-card{padding:24px 16px}.form-actions{flex-direction:column}.notification-settings-card{padding:24px 16px;margin:0 16px}.notification-settings-title{font-size:1.25rem}.notification-item{flex-direction:column;align-items:flex-start;gap:12px}.notification-actions{flex-direction:column}.withdrawal-card{padding:24px 16px;margin:0 16px}.withdrawal-title{font-size:1.25rem}.withdrawal-subtitle br{display:none}.warning-list li{flex-direction:column;gap:4px}.withdrawal-actions{flex-direction:column}.faq-title{font-size:1.375rem}.faq-category-title{font-size:1rem}.faq-question{padding:16px;font-size:.8125rem}.faq-answer.open{padding:0 16px 16px}.faq-answer p{font-size:.8125rem}.faq-contact{padding:24px 16px;margin:32px 16px 0}.idea-detail-header{padding:24px 16px}.idea-detail-content{padding:24px 16px}.idea-detail-title{font-size:1.25rem}.idea-detail-info{flex-direction:column;gap:8px}.idea-detail-sidebar{grid-template-columns:1fr}.similar-ideas{padding:24px 16px}.about-page{padding-top:calc(var(--header-height) + 40px);padding-bottom:60px}.about-page-icon{font-size:3rem}.about-page-title{font-size:1.5rem}.about-page-tagline{font-size:1rem}.about-section{margin-bottom:40px;padding-bottom:40px}.about-section-title{font-size:1.125rem}.about-section-content{font-size:.875rem}.about-values{grid-template-columns:1fr;gap:16px}.about-value-item{padding:24px 20px}.about-cta{padding:32px 24px}.about-cta-text{font-size:1.125rem}.about-operator{padding:24px}.about-operator-item{flex-direction:column;gap:4px}.about-operator-item dt{width:100%;font-size:.8125rem}.guidelines-page{padding-top:calc(var(--header-height) + 30px)}.guidelines-title{font-size:1.5rem}.guidelines-section{padding:30px 20px}.guidelines-tip{flex-direction:column;gap:12px}.tip-number{width:32px;height:32px;font-size:.875rem}.review-points{grid-template-columns:1fr}.important-notice{flex-direction:column;gap:12px;text-align:center}.guidelines-section .flow-steps{flex-direction:column;align-items:center}.guidelines-section .flow-step{max-width:100%;width:100%}.flow-arrow{transform:rotate(90deg);padding:0}.guidelines-cta{padding:40px 20px}.related-links{flex-direction:column;align-items:center}.related-link{width:100%;max-width:280px;justify-content:center}.error-page{padding-top:calc(var(--header-height) + 40px)}.error-icon{font-size:3rem}.error-code{font-size:3.75rem}.error-title{font-size:1.25rem}.error-links{flex-direction:column;align-items:center}.error-links .btn{width:100%;max-width:280px}.helpful-links-list{flex-direction:column;gap:12px}.hamburger-dropdown{min-width:200px}.hamburger-dropdown-item{padding:10px 16px;font-size:.8125rem}.header-nav>.header-link,.header-nav>.header-nav-link{display:none}.hamburger-btn{width:44px;height:44px;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;padding:10px}.checkbox-label{min-height:44px;align-items:center}.checkbox-label input[type=checkbox]{width:22px;height:22px;min-width:22px}.footer-nav a{padding:8px 4px;min-height:44px;display:inline-flex;align-items:center}.hamburger-dropdown-item{min-height:44px;display:flex;align-items:center}.header-link{min-height:44px;display:inline-flex;align-items:center}}[data-theme=dark]{--primary-color:#f5a623;--primary-hover:#e6951a;--primary-text:#f0b03a;--text-dark:#e8e8e8;--text-gray:#aaaaaa;--text-light:#909090;--bg-white:#1a1a2e;--bg-light:#141420;--bg-cream:#2a2410;--border-color:#3a3a4a;--border-dark:#cccccc;--error-color:#fc8181;--error-bg:#2d1a1a;--error-border:#fc8181;--danger-text:#ef9a9a;--success-text:#81c784;--disabled-color:#555555;--text-muted:#9a9a9a;--color-black:#000000;--like-border:#cc5555;--line-green:#00a300;--gold-color:#ccad00;--gold-dark:#b89a00;--gold-text:#ffd700;--rank-gold:#b8960b;--rank-silver:#888888;--rank-bronze:#8b5e20;--status-reviewing-bg:#3a3020;--status-reviewing-color:#ffd666;--status-published-bg:#1a3a1a;--status-published-color:#68d391;--status-adopted-bg:#1a2a3a;--status-adopted-color:#63b3ed;--status-decided-border:#38a169;--form-error-color:#fc8181;--form-success-color:#68d391;--form-disabled-bg:#2a2a3e;--warning-border:#5c2a2a;--warning-important-bg:#2a2410;--warning-important-border:#6b5a1e;--notice-border:#b8860b;--notice-strong:#f0b03a;--check-color:#34d399;--valid-border:#2d5a2d;--scrollbar-hover:#555;--idea-textarea-bg:#2a2a3e;--dm-surface-elevated:#333345;--dm-register-gradient-end:#302818;--thanks-card-bg:var(--bg-cream);--thanks-hover-bg:var(--bg-cream);--balance-color:#68d391;--like-benefit-bg-start:#2a2410;--like-benefit-bg-end:#252010;--like-benefit-border:#6b5a1e;--level-none-bg:#3a3a4a;--level-none-color:#aaaaaa;--level-bronze-start:#8b5e20;--level-bronze-end:#7a5020;--level-silver-start:#888888;--level-silver-end:#707070;--warning-light-border:#5c2a2a;--print-border:#555555;--chat-meta-mine:rgba(255, 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0.3);--card-bg-dark:#252535;--tx-pending-bg:#3e2700;--tx-pending-color:#ffb74d;--tx-negotiating-bg:#1b3a1b;--tx-negotiating-color:#81c784;--tx-approved-bg:#0d2744;--tx-approved-color:#64b5f6;--tx-rejected-bg:#3c1111;--tx-rejected-color:#ef9a9a;--tx-payment-bg:#3e3000;--tx-payment-color:#ffd54f;--tx-payment-confirmed-bg:#0a1e3d;--tx-payment-confirmed-color:#64b5f6;--tx-delivered-bg:#3e2700;--tx-delivered-color:#ffb74d;--tx-completed-bg:#0e2e0e;--tx-completed-color:#66bb6a;--tx-cancelled-bg:#2a2a2a;--tx-disputed-bg:#3e2700;--tx-disputed-color:#ffb74d;--tx-refunded-bg:#3c1111;--tx-refunded-color:#ef9a9a;--tx-reviewed-bg:#1a0e33;--tx-reviewed-color:#b39ddb;--negotiation-bg:#1b2e1b;--negotiation-border:#4a6b4a;--unread-badge-bg:#d32f2f;--visited-link-color:#b39ddb;--gradient-accent-end:#221e0a;--rank-1-bg-start:#2a2515;--rank-2-bg-start:#252528;--rank-3-bg-start:#28200f;--like-liked-bg:#2d1a1a;color-scheme:dark}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--primary-color:#f5a623;--primary-hover:#e6951a;--primary-text:#f0b03a;--text-dark:#e8e8e8;--text-gray:#aaaaaa;--text-light:#909090;--bg-white:#1a1a2e;--bg-light:#141420;--bg-cream:#2a2410;--border-color:#3a3a4a;--border-dark:#cccccc;--error-color:#fc8181;--error-bg:#2d1a1a;--error-border:#fc8181;--danger-text:#ef9a9a;--success-text:#81c784;--disabled-color:#555555;--text-muted:#9a9a9a;--color-black:#000000;--like-border:#cc5555;--line-green:#00a300;--gold-color:#ccad00;--gold-dark:#b89a00;--gold-text:#ffd700;--rank-gold:#b8960b;--rank-silver:#888888;--rank-bronze:#8b5e20;--status-reviewing-bg:#3a3020;--status-reviewing-color:#ffd666;--status-published-bg:#1a3a1a;--status-published-color:#68d391;--status-adopted-bg:#1a2a3a;--status-adopted-color:#63b3ed;--status-decided-border:#38a169;--form-error-color:#fc8181;--form-success-color:#68d391;--form-disabled-bg:#2a2a3e;--warning-border:#5c2a2a;--warning-important-bg:#2a2410;--warning-important-border:#6b5a1e;--notice-border:#b8860b;--notice-strong:#f0b03a;--check-color:#34d399;--valid-border:#2d5a2d;--scrollbar-hover:#555;--idea-textarea-bg:#2a2a3e;--dm-surface-elevated:#333345;--dm-register-gradient-end:#302818;--thanks-card-bg:var(--bg-cream);--thanks-hover-bg:var(--bg-cream);--balance-color:#68d391;--like-benefit-bg-start:#2a2410;--like-benefit-bg-end:#252010;--like-benefit-border:#6b5a1e;--level-none-bg:#3a3a4a;--level-none-color:#aaaaaa;--level-bronze-start:#8b5e20;--level-bronze-end:#7a5020;--level-silver-start:#888888;--level-silver-end:#707070;--warning-light-border:#5c2a2a;--print-border:#555555;--chat-meta-mine:rgba(255, 255, 255, 0.85);--danger-color:#fc8181;--danger-hover:#9b2c2c;--primary-focus:rgba(240, 176, 58, 0.2);--primary-focus-strong:rgba(240, 176, 58, 0.3);--primary-focus-xl:rgba(240, 176, 58, 0.4);--shadow-primary:rgba(245, 166, 35, 0.2);--shadow-golden:rgba(255, 179, 0, 0.2);--shadow-danger:rgba(197, 48, 48, 0.3);--card-bg-dark:#252535;--tx-pending-bg:#3e2700;--tx-pending-color:#ffb74d;--tx-negotiating-bg:#1b3a1b;--tx-negotiating-color:#81c784;--tx-approved-bg:#0d2744;--tx-approved-color:#64b5f6;--tx-rejected-bg:#3c1111;--tx-rejected-color:#ef9a9a;--tx-payment-bg:#3e3000;--tx-payment-color:#ffd54f;--tx-payment-confirmed-bg:#0a1e3d;--tx-payment-confirmed-color:#64b5f6;--tx-delivered-bg:#3e2700;--tx-delivered-color:#ffb74d;--tx-completed-bg:#0e2e0e;--tx-completed-color:#66bb6a;--tx-cancelled-bg:#2a2a2a;--tx-disputed-bg:#3e2700;--tx-disputed-color:#ffb74d;--tx-refunded-bg:#3c1111;--tx-refunded-color:#ef9a9a;--tx-reviewed-bg:#1a0e33;--tx-reviewed-color:#b39ddb;--negotiation-bg:#1b2e1b;--negotiation-border:#4a6b4a;--unread-badge-bg:#d32f2f;--cream-text:#d4a050;--strength-weak:#ef5350;--strength-fair:#ffa726;--strength-good:#ffee58;--strength-strong:#66bb6a;--toast-bg:rgba(40, 40, 60, 0.95);--input-bg:#2a2a3e;color-scheme:dark;--rank-1-bg-start:#2a2515;--rank-2-bg-start:#252528;--rank-3-bg-start:#28200f;--visited-link-color:#b39ddb;--gradient-accent-end:#221e0a;--like-liked-bg:#2d1a1a}}[data-theme=dark] .header{background-color:var(--bg-white);border-bottom-color:var(--border-color)}[data-theme=dark] .footer{background-color:var(--footer-bg-dark);color:var(--text-gray)}[data-theme=dark] .faq-item,[data-theme=dark] .feature-card,[data-theme=dark] .form-section,[data-theme=dark] .genre-card,[data-theme=dark] .idea-card,[data-theme=dark] .marketplace-card,[data-theme=dark] .mypage-card,[data-theme=dark] .notification-settings-card,[data-theme=dark] .profile-card,[data-theme=dark] .ranking-item,[data-theme=dark] .register-form-card,[data-theme=dark] .step,[data-theme=dark] .thanks-card,[data-theme=dark] input,[data-theme=dark] select,[data-theme=dark] textarea{background-color:var(--input-bg);color:var(--text-dark);border-color:var(--border-color)}[data-theme=dark] input::placeholder,[data-theme=dark] textarea::placeholder{color:var(--text-muted)}[data-theme=dark] #detail-overlay,[data-theme=dark] #register-overlay,[data-theme=dark] .detail-modal-content,[data-theme=dark] .modal-content,[data-theme=dark] .modal-overlay{background-color:rgba(0,0,0,.75)}[data-theme=dark] .hero{background-color:var(--bg-light)}[data-theme=dark] .badge,[data-theme=dark] .category-badge,[data-theme=dark] .status-badge,[data-theme=dark] .tag{background-color:var(--dm-surface-elevated);color:var(--text-dark)}[data-theme=dark] table{background-color:var(--card-bg-dark);color:var(--text-dark)}[data-theme=dark] th{background-color:var(--bg-white);color:var(--text-dark)}[data-theme=dark] td{border-color:var(--border-color)}[data-theme=dark] tr:nth-child(2n){background-color:var(--bg-white)}[data-theme=dark] .toast-notification{background-color:var(--dm-surface-elevated);color:var(--text-dark);border-color:var(--border-color)}[data-theme=dark] .register-benefits-box{background:linear-gradient(135deg,var(--bg-cream) 0,var(--dm-register-gradient-end) 100%);border-color:var(--border-color)}[data-theme=dark] .benefits-box-list .highlight{background:linear-gradient(transparent 60%,rgba(255,235,59,.25) 60%)}[data-theme=dark] .thanks-card{background-color:var(--bg-cream)}[data-theme=dark] .btn-outline-thanks:hover{background-color:var(--bg-cream)}[data-theme=dark] .hamburger-dropdown{background-color:var(--card-bg-dark);border-color:var(--border-color)}[data-theme=dark] .hamburger-dropdown-item:hover{background-color:var(--dm-surface-elevated)}[data-theme=dark] .hamburger-dropdown-divider{border-color:var(--border-color)}[data-theme=dark] textarea{background-color:var(--input-bg)}[data-theme=dark] .ranking-tab{background-color:var(--card-bg-dark);color:var(--text-gray);border-color:var(--border-color)}[data-theme=dark] .ranking-tab.active{background-color:var(--primary-color);color:var(--bg-white)}[data-theme=dark] .like-btn,[data-theme=dark] .notification-section{background-color:var(--card-bg-dark);border-color:var(--border-color)}[data-theme=dark] .notification-item{border-color:var(--border-color)}[data-theme=dark] .btn-outline{border-color:var(--border-color);color:var(--text-dark)}[data-theme=dark] .btn-outline:hover{background-color:var(--card-bg-dark)}[data-theme=dark] .about-page,[data-theme=dark] .company-contact-page,[data-theme=dark] .contact-page,[data-theme=dark] .error-page,[data-theme=dark] .faq-page,[data-theme=dark] .guidelines-page,[data-theme=dark] .idea-detail-page,[data-theme=dark] .idea-form-page,[data-theme=dark] .legal-page,[data-theme=dark] .login-page,[data-theme=dark] .marketplace-page,[data-theme=dark] .mypage-page,[data-theme=dark] .notification-settings-page,[data-theme=dark] .password-reset-page,[data-theme=dark] .payment-result-page,[data-theme=dark] .ranking-page,[data-theme=dark] .register-page,[data-theme=dark] .thanks-page,[data-theme=dark] .withdrawal-page{background-color:var(--bg-white)}[data-theme=dark] ::-webkit-scrollbar-track{background:#1a1a2e}[data-theme=dark] ::-webkit-scrollbar-thumb{background:#3a3a4a}.theme-toggle-group{display:flex;gap:8px;flex-wrap:wrap}.theme-toggle-group .theme-option{flex:1;min-width:90px;padding:10px 12px;border:2px solid var(--border-color);border-radius:var(--radius-base);background:var(--bg-white);color:var(--text-dark);font-size:.8125rem;font-family:var(--font-family);cursor:pointer;text-align:center;transition:border-color .2s,background-color .2s}.theme-toggle-group .theme-option:hover{border-color:var(--primary-color)}.theme-toggle-group .theme-option.active{border-color:var(--primary-color);background-color:var(--bg-cream);font-weight:600}@media (min-width:1200px){.container{max-width:1200px}.idea-cards-grid{grid-template-columns:repeat(3,1fr)}.hero-title{font-size:3.5rem}.hero-description{font-size:1.25rem;max-width:700px}.ranking-content{max-width:1000px}.footer-nav{gap:32px}}@media (max-width:480px){.container{padding-inline-start:12px;padding-inline-end:12px}.idea-cards-grid{gap:12px}.ranking-tabs{gap:4px}.ranking-tab{font-size:.7rem;padding:4px 8px}.marketplace-filters{flex-direction:column;gap:8px}.btn-outline,.btn-primary{font-size:.85rem;padding:10px 16px}}@media (max-width:1024px) and (orientation:landscape){.hero{min-height:auto;padding:32px 20px}.hero-title{font-size:1.75rem}.hero-description{font-size:1rem}.form-card{padding:24px 20px}.modal-content{max-height:85vh;overflow-y:auto}}@media (min-resolution:2dppx){.form-card,.idea-card,.marketplace-card{border-width:.5px}}@media (min-width:1200px){body{font-size:1.0625rem}h1{font-size:2.25rem}h2{font-size:1.75rem}h3{font-size:1.375rem}.section{padding:80px 0}.form-card{max-width:640px}}