:root{font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;--color-bg:#f5f5f7;--color-bg-strong:#fff;--color-surface:#ffffffeb;--color-surface-muted:#fafafcf0;--color-surface-strong:#fff;--color-text:#111827;--color-text-muted:#4b5563;--color-text-soft:#6b7280;--color-border:#d2d2d7cc;--color-border-strong:#c7c7cceb;--color-accent:#2563eb;--color-accent-strong:#1d4ed8;--color-accent-soft:#2563eb1a;--color-success:#22a06b;--color-success-soft:#22a06b1f;--color-danger:#dc2626;--color-danger-soft:#dc26261a;--shadow-card:0 8px 24px #0f172a0f, 0 2px 8px #0f172a0a;--shadow-stage:0 18px 48px #0f172a14, 0 4px 18px #0f172a0d;--transition-base:.18s cubic-bezier(.2, .8, .2, 1);--c-page-bg:#f6faff;--c-card:#fff;--c-text:#111827;--c-text-2:#4b5563;--c-text-3:#6b7280;--c-text-soft:#8a96a8;--c-blue-50:#eff6ff;--c-blue-100:#dbeafe;--c-blue-500:#2563eb;--c-blue-600:#1d4ed8;--c-green-50:#ecfdf5;--c-green-500:#22a06b;--c-green-600:#16915e;--c-purple-50:#f3f0ff;--c-purple-500:#6d5dfb;--c-border:#dde7f3;--c-border-soft:#e7eef8;--sh-card:0 12px 30px #0f3d8a12;--sh-card-hover:0 16px 36px #0f3d8a1a;--sh-header:0 8px 24px #0f3d8a0f;--sh-btn:0 10px 20px #2563eb2e;font-family:-apple-system,BlinkMacSystemFont,SF Pro Display,SF Pro Text,Segoe UI,sans-serif}.app-frame{min-height:100vh}*{box-sizing:border-box}html,body,#root{min-height:100%;margin:0}body{min-height:100vh;color:var(--color-text);background:radial-gradient(circle at 0 0,#2563eb14,#0000 28%),radial-gradient(circle at 100% 0,#ffffffd9,#0000 32%),linear-gradient(#fff 0%,#f5f5f7 58%,#fbfbfd 100%);overflow-x:hidden}img,svg{max-width:100%;display:block}a{color:inherit;text-decoration:none}button,input,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed}.app-shell{min-height:100vh}.app-frame>.app-shell{min-height:calc(100vh - 72px)}.app-shell__main{max-width:1280px;margin:0 auto;padding:28px 24px 88px}.hero-panel h1,.card h2,.card h3,.card strong{letter-spacing:-.04em}.hero-panel{grid-template-columns:minmax(0,1.55fr) minmax(280px,.9fr);align-items:stretch;gap:28px;padding:52px 0 40px;display:grid}.hero-panel__copy,.hero-panel__aside{flex-direction:column;display:flex}.hero-panel__copy{gap:18px}.hero-panel__aside{justify-content:flex-start}.hero-panel__meta{min-height:100%;box-shadow:var(--shadow-card);-webkit-backdrop-filter:blur(22px);backdrop-filter:blur(22px);background:#ffffffad;border:1px solid #ffffffbf;border-radius:30px;flex-direction:column;gap:12px;padding:18px;display:flex}.hero-panel h1{max-width:12ch;margin:0;font-size:clamp(2.85rem,6vw,5.5rem);font-weight:700;line-height:.96}.hero-panel p{max-width:62ch;color:var(--color-text-muted);margin:0;font-size:1.06rem;line-height:1.65}.hero-actions{flex-wrap:wrap;gap:10px;display:flex}.badge{letter-spacing:.01em;text-transform:none;border-radius:999px;justify-content:center;align-items:center;width:fit-content;padding:7px 12px;font-size:.76rem;font-weight:600;display:inline-flex}.badge--default{color:var(--color-text-muted);background:#1d1d1f0f}.badge--accent{color:var(--color-accent);background:#2563eb1a}.badge--success{background:var(--color-success-soft);color:var(--color-success)}.button{transition:transform var(--transition-base), border-color var(--transition-base), background-color var(--transition-base), color var(--transition-base), box-shadow var(--transition-base), opacity var(--transition-base);border:1px solid #0000;border-radius:999px;padding:0 18px;font-weight:600}.button:hover:not(:disabled){transform:translateY(-1px)}.button:active:not(:disabled){transform:scale(.985)}.button:focus-visible,.input:focus-visible,.textarea:focus-visible,.question-list__item:focus-visible{outline:0;box-shadow:0 0 0 4px #2563eb29}.button:disabled{opacity:.52;transform:none}.button--primary{background:var(--color-accent);color:#fff;box-shadow:inset 0 1px #ffffff38,0 10px 20px #2563eb2e}.button--primary:hover:not(:disabled){background:var(--color-accent-strong)}.button--secondary{color:var(--color-text);background:#ffffffd6;border-color:#d2d2d7e0;box-shadow:0 2px 8px #0f172a0a}.button--secondary:hover:not(:disabled){background:#fff;border-color:#2563eb38}.button--ghost{color:var(--color-text-muted);background:0 0}.button--ghost:hover:not(:disabled){color:var(--color-text);background:#ffffff9e}.button--sm{min-height:42px}.button--md{min-height:48px}.button--lg{min-height:58px;padding:0 20px}.button--full{width:100%}.card{border:1px solid var(--color-border);background:var(--color-surface);box-shadow:var(--shadow-card);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);transition:transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);border-radius:30px}.card--muted{background:var(--color-surface-muted)}.card--accent{background:radial-gradient(circle at 0 0,#2563eb1f,#0000 30%),#fffffff0}.stack{flex-direction:column;gap:20px;display:flex}.stack--wide{gap:28px}.auth-layout{grid-template-columns:minmax(0,440px) minmax(0,1fr);align-items:start;gap:24px;display:grid}.feature-grid,.overview-grid,.page-grid{gap:20px;display:grid}.feature-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.feature-grid--compact{gap:16px}.v2-flow-grid{grid-template-columns:minmax(0,1.35fr) repeat(2,minmax(0,1fr));gap:18px;display:grid}.v2-flow-card{flex-direction:column;justify-content:space-between;gap:22px;min-height:260px;padding:28px;display:flex}.v2-flow-card--primary{background:linear-gradient(135deg,#fffffff5,#f2f9ffe6);border-color:#2563eb33}.v2-flow-card__top,.home-section__head{justify-content:space-between;align-items:flex-start;gap:16px;display:flex}.v2-flow-card__copy{flex-direction:column;gap:10px;display:flex}.v2-flow-card__copy h3,.home-section__head h2{margin:0;font-size:clamp(1.35rem,2.2vw,2rem)}.v2-flow-card__copy p,.home-section__head p{color:var(--color-text-muted);margin:0;line-height:1.65}.home-section{flex-direction:column;gap:16px;display:flex}.overview-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.page-grid--student{grid-template-columns:minmax(280px,340px) minmax(0,1fr);align-items:start}.page-grid--admin{grid-template-columns:minmax(290px,330px) minmax(0,1.2fr) minmax(280px,340px);align-items:start}.feature-card,.overview-card,.auth-card,.banner-card,.identity-card,.admin-current,.answer-table-card,.metric-panel,.qr-panel,.display-stage,.collecting-stage,.not-found-card,.waiting-state,.question-card,.question-list-card,.admin-controls{padding:28px}.feature-card{flex-direction:column;gap:18px;display:flex}.feature-card__icon{width:48px;height:48px;color:var(--color-accent);background:#2563eb17;border-radius:18px;place-items:center;display:grid}.banner-card{color:var(--color-text-muted);line-height:1.72}.banner-card--error{color:#b91c1c;background:#fff4f4eb;border-color:#dc262638}.sessions-empty{text-align:center;place-items:center;min-height:calc(100vh - 280px);display:grid}.feature-card h3,.overview-card h3,.question-card h2,.display-stage h2,.collecting-stage h2,.auth-card h3,.admin-current h3{color:var(--color-text);margin:0}.feature-card h3,.overview-card h3,.auth-card h3,.admin-current h3,.question-list-card h3,.answer-table-card h3,.admin-controls h3{font-size:1.2rem}.question-card h2,.display-stage h2,.collecting-stage h2{font-size:clamp(1.85rem,3vw,2.75rem);line-height:1.08}.feature-card p,.overview-card p,.identity-card p,.admin-current p,.qr-panel p,.display-stage p,.collecting-stage p,.waiting-state p,.question-card p,.admin-controls p,.answer-wall__empty p{color:var(--color-text-muted);margin:0;line-height:1.65}.feature-card__link{color:var(--color-accent);align-items:center;gap:6px;font-weight:600;display:inline-flex}.section-heading{justify-content:space-between;align-items:center;gap:12px;margin-bottom:18px;display:flex}.section-heading h3{margin:0}.flow-list{color:var(--color-text-muted);margin:0;padding-left:20px;line-height:1.85}.field{flex-direction:column;gap:10px;display:flex}.field__label{font-size:.94rem;font-weight:600}.field__hint{color:var(--color-text-soft);font-size:.84rem}.input,.textarea{width:100%;color:var(--color-text);transition:border-color var(--transition-base), box-shadow var(--transition-base), background-color var(--transition-base);resize:vertical;background:#ffffffeb;border:1px solid #d2d2d7eb;border-radius:18px;padding:14px 16px}.input::placeholder,.textarea::placeholder{color:var(--color-text-soft)}.input:focus-visible,.textarea:focus-visible{background:#fff;border-color:#2563eb66}.identity-card,.question-card,.admin-current,.answer-table-card,.question-list-card,.admin-controls,.metric-panel,.qr-panel,.display-stage{background:#ffffffc7}.identity-card{flex-direction:column;gap:18px;display:flex}.identity-card__meta{flex-wrap:wrap;gap:8px;display:flex}.status-strip{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;padding:14px;display:grid}.status-strip--compact{grid-template-columns:repeat(2,minmax(0,1fr));padding:0}.status-tile{background:#ffffffe0;border:1px solid #d2d2d7d1;border-radius:24px;flex-direction:column;gap:8px;padding:16px 18px;display:flex}.status-tile span,.metric-panel__row span,.display-stage__metric span,.collecting-stage span{color:var(--color-text-soft);letter-spacing:.08em;text-transform:uppercase;font-size:.77rem}.status-tile strong,.metric-panel strong{font-size:1.12rem}.question-card{box-shadow:var(--shadow-stage);border-radius:34px;flex-direction:column;gap:24px;display:flex}.question-card__head{flex-direction:column;gap:12px;display:flex}.question-card__step{color:var(--color-accent);letter-spacing:.08em;text-transform:uppercase;font-size:.82rem;font-weight:700}.question-card__footer{flex-direction:column;gap:12px;display:flex}.choice-grid{gap:14px;display:grid}.choice-grid--compact{grid-template-columns:repeat(auto-fit,minmax(72px,1fr))}.choice-button{text-align:left;white-space:normal;justify-content:flex-start;min-height:64px}.choice-grid--compact .choice-button{text-align:center;justify-content:center;min-height:60px;padding:0 10px}.choice-button.is-selected{box-shadow:inset 0 0 0 1px #ffffff29,0 12px 24px #2563eb2e}.choice-button:hover:not(:disabled),.choice-button:active:not(:disabled){transform:none}.choice-button.button--primary:hover:not(:disabled){background:var(--color-accent)}.choice-button.button--secondary:hover:not(:disabled){background:#ffffffd6;border-color:#d2d2d7e0}.multi-choice-grid{gap:14px;display:grid}.multi-choice-card{width:100%;min-height:72px;color:var(--color-text);text-align:left;transition:transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base), background-color var(--transition-base);background:#ffffffe6;border:1px solid #d2d2d7d6;border-radius:24px;grid-template-columns:auto 1fr;align-items:center;gap:12px;padding:16px 18px;display:grid}.multi-choice-card:hover{border-color:#2563eb33;transform:translateY(-1px)}.multi-choice-card.is-selected{background:#2563eb14;border-color:#2563eb52;box-shadow:0 12px 24px #2563eb1a}.multi-choice-card__box{width:28px;height:28px;color:var(--color-accent);background:#ffffffeb;border:1px solid #d2d2d7f5;border-radius:10px;place-items:center;font-weight:700;display:grid}.multi-choice-card__label{line-height:1.45}.answer-table{flex-direction:column;gap:12px;display:flex}.answer-table__head,.answer-table__row{grid-template-columns:.9fr 1.7fr .9fr .7fr;align-items:center;gap:12px;display:grid}.answer-table__head{color:var(--color-text-soft);padding:0 6px;font-size:.82rem;font-weight:600}.answer-table__row{background:#fbfbfdf5;border:1px solid #d2d2d7d6;border-radius:22px;padding:14px 16px}.answer-table__row--actions{grid-template-columns:.9fr 1.5fr .8fr .6fr 1.1fr}.answer-table__actions{justify-content:flex-end;display:flex}.question-list{flex-direction:column;gap:10px;display:flex}.question-list__row{align-items:stretch;gap:8px;display:flex}.question-list__item{text-align:left;width:100%;transition:transform var(--transition-base), border-color var(--transition-base), background-color var(--transition-base), box-shadow var(--transition-base);background:#ffffffe0;border:1px solid #d2d2d7d6;border-radius:22px;flex:1;grid-template-columns:auto 1fr auto;align-items:center;gap:12px;padding:16px;display:grid}.question-list__item:hover{border-color:#2563eb33;transform:translateY(-1px)}.question-list__item.is-active{background:#2563eb12;border-color:#2563eb38;box-shadow:0 10px 24px #2563eb14}.question-list__copy{flex-direction:column;gap:4px;display:flex}.question-list__copy small{color:var(--color-text-soft);line-height:1.45}.question-list__order{color:var(--color-accent);font-size:.78rem;font-weight:700}.question-list__type{color:var(--color-text-soft);font-weight:600}.question-list__open-toggle{min-width:58px;color:var(--color-text-soft);cursor:pointer;transition:border-color var(--transition-base), background-color var(--transition-base), color var(--transition-base);background:#ffffffe0;border:1px solid #d2d2d7d6;border-radius:18px;flex:none;padding:0 14px;font-size:.82rem;font-weight:700}.question-list__open-toggle:hover:not(:disabled){border-color:#2563eb4d}.question-list__open-toggle.is-open{color:var(--color-accent);background:#2563eb1a;border-color:#2563eb59}.question-list__open-toggle:disabled{opacity:.5;cursor:default}.admin-controls{flex-direction:column;gap:18px;display:flex}.admin-controls__status-row{flex-wrap:wrap;gap:8px;display:flex}.admin-controls__buttons{flex-wrap:wrap;gap:10px;display:flex}.inline-actions{flex-wrap:wrap;gap:8px;display:flex}.inline-message{color:#1d4ed8;background:#2563eb14;border:1px solid #2563eb24;border-radius:18px;padding:12px 14px;font-size:.9rem}.inline-message--error{background:var(--color-danger-soft);color:var(--color-danger);border-color:#dc262629}.toast-stack{z-index:1000;pointer-events:none;flex-direction:column-reverse;align-items:center;gap:10px;width:max-content;max-width:min(460px,100vw - 32px);display:flex;position:fixed;bottom:32px;left:50%;transform:translate(-50%)}.toast{color:#f9fafb;letter-spacing:-.01em;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);background:#111827ad;border-radius:999px;align-items:center;gap:10px;padding:12px 18px;font-size:.9rem;font-weight:600;line-height:1.4;animation:.26s cubic-bezier(.16,1,.3,1) toast-in;display:inline-flex;box-shadow:0 12px 32px #0f172a52}.toast:before{content:"";background:#60a5fa;border-radius:999px;flex:none;width:8px;height:8px}.toast--success:before{background:#4ade80}.toast--error:before{background:#f87171}@keyframes toast-in{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.metric-panel{flex-direction:column;gap:14px;display:flex}.status-summary-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;display:grid}.status-summary-card{background:#ffffffe0;border:1px solid #d2d2d7d1;border-radius:22px;flex-direction:column;gap:8px;padding:16px;display:flex}.status-summary-card span{color:var(--color-text-soft);letter-spacing:.06em;text-transform:uppercase;font-size:.78rem}.status-summary-card strong{font-size:1.35rem;line-height:1}.metric-panel__row{border-bottom:1px solid #d2d2d7d1;justify-content:space-between;align-items:center;gap:12px;padding-bottom:14px;display:flex}.metric-panel__row:last-child{border-bottom:0;padding-bottom:0}.metric-panel strong,.display-stage__metric strong,.collecting-stage strong{color:var(--color-text)}.qr-panel{flex-direction:column;gap:16px;display:flex}.qr-panel__code{background:#fffffff2;border:1px solid #d2d2d7d1;border-radius:28px;place-items:center;padding:24px;display:grid}.qr-panel code{overflow-wrap:anywhere;color:var(--color-text-muted);background:#1d1d1f0a;border-radius:18px;padding:12px 14px;font-size:.82rem}.display-stage{box-shadow:var(--shadow-stage);background:radial-gradient(circle at 0 0,#2563eb1a,#0000 30%),#ffffffe6;border-radius:40px;padding:36px}.display-stage__head{grid-template-columns:minmax(0,1fr) auto;gap:18px;margin-bottom:28px;display:grid}.display-stage__metric{background:#ffffffd1;border-radius:28px;flex-direction:column;justify-content:center;align-items:flex-end;gap:8px;min-width:148px;padding:18px 20px;display:flex;box-shadow:inset 0 0 0 1px #d2d2d7b3}.display-stage__metric strong{font-size:clamp(2rem,4vw,3.5rem);line-height:1}.result-chart{min-height:360px}.answer-wall{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;display:grid}.answer-wall__card{border-radius:28px;flex-direction:column;gap:12px;padding:22px;display:flex}.answer-wall__card span{color:var(--color-accent);letter-spacing:.08em;text-transform:uppercase;font-size:.8rem;font-weight:700}.answer-wall__card p{color:var(--color-text);margin:0;font-size:1.06rem;line-height:1.55}.answer-wall__empty{text-align:center;padding:28px}.answer-wall__empty strong{margin-bottom:10px;font-size:1.05rem;display:block}.collecting-stage,.waiting-state{flex-direction:column;justify-content:center;gap:14px;min-height:320px;display:flex}.collecting-stage{text-align:center;background:radial-gradient(circle at top,#2563eb14,#0000 34%),#ffffffe0;border-radius:38px;align-items:center;min-height:480px}.collecting-stage strong{font-size:clamp(2rem,4vw,3rem)}.not-found-card{flex-direction:column;align-items:flex-start;gap:16px;display:flex}@media (width<=1080px){.feature-grid,.overview-grid,.auth-layout,.page-grid--student,.page-grid--admin,.answer-wall,.status-strip,.hero-panel,.display-stage__head{grid-template-columns:1fr}.display-stage__metric{align-items:flex-start}}@media (width<=720px){.app-shell__main{padding:20px 16px 64px}.hero-panel{padding:34px 0 28px}.feature-card,.overview-card,.auth-card,.banner-card,.identity-card,.admin-current,.answer-table-card,.metric-panel,.qr-panel,.display-stage,.collecting-stage,.not-found-card,.waiting-state,.question-card,.question-list-card,.admin-controls{padding:22px}.status-strip--compact{grid-template-columns:1fr}.choice-button{min-height:72px}.choice-grid--compact,.status-summary-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.answer-table__head,.answer-table__row,.answer-table__row--actions{grid-template-columns:1fr}.answer-table__head{display:none}.answer-table__actions{justify-content:flex-start}.display-stage{border-radius:32px}.display-stage__metric{width:100%;min-width:0}.multi-choice-card{min-height:76px}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}.danger-zone{background:#fff4f4b3;border:1px solid #dc262647;border-radius:28px;flex-direction:column;gap:18px;padding:24px;display:flex}.danger-zone__title{color:var(--color-danger);margin:0 0 8px;font-size:1rem}.danger-zone__desc{color:#b91c1c;margin:0;font-size:.88rem;line-height:1.65}.danger-zone__buttons{flex-wrap:wrap;gap:10px;display:flex}.button--danger{color:var(--color-danger)!important;background:#ffffffe6!important;border-color:#dc26265c!important}.button--danger:hover:not(:disabled){background:#fff4f4f2!important;border-color:#dc262699!important}.button--danger-strong{background:#dc262614!important}.button--danger-strong:hover:not(:disabled){background:#dc262626!important}.hero-panel--compact{padding:20px 0}.hero-panel--compact h1{font-size:clamp(1.6rem,3vw,2.2rem)}.feature-card__icon-row{justify-content:space-between;align-items:center;gap:8px;display:flex}.share-card{flex-direction:column;gap:16px;padding:28px;display:flex}.share-card__header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;display:flex}.share-card__header h3{margin:0}.share-card__url{border:1px solid var(--color-border);background:#1d1d1f08;border-radius:22px;flex-wrap:wrap;align-items:center;gap:12px;padding:14px 16px;display:flex}.share-card__code{overflow-wrap:anywhere;min-width:0;color:var(--color-text-muted);flex:1;font-size:.84rem}.share-card__hint{color:var(--color-text-soft);margin:0;font-size:.88rem;line-height:1.6}.share-card .button{white-space:nowrap;flex-shrink:0;align-items:center;gap:6px;display:flex}.flow-list--bullet{list-style-type:disc}.student-shell{background:#f8fafc;flex-direction:column;min-height:100vh;display:flex}.student-header{z-index:10;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-bottom:1px solid var(--color-border);background:#ffffffe0;justify-content:space-between;align-items:center;gap:16px;padding:12px 20px;display:flex;position:sticky;top:0}.student-header__brand{align-items:center;gap:10px;display:flex}.student-header__logo{align-items:center;display:inline-flex}.student-header__name{letter-spacing:-.01em;color:var(--color-text);font-size:1rem;font-weight:800}.student-main{flex-direction:column;flex:1;gap:20px;width:100%;max-width:480px;margin:0 auto;padding:28px 20px 80px;display:flex}.student-question-list-card{flex-direction:column;gap:16px;display:flex}.student-question-list__head h2{letter-spacing:-.02em;margin:0 0 6px;font-size:1.25rem;font-weight:700}.student-question-list__head p{color:var(--color-text-soft);margin:0;font-size:.9rem;line-height:1.5}.student-question-list{flex-direction:column;gap:10px;margin:0;padding:0;list-style:none;display:flex}.student-question-item{text-align:left;width:100%;transition:transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);background:#ffffffeb;border:1px solid #d2d2d7d6;border-radius:20px;grid-template-columns:1fr auto;grid-template-areas:"order status""title status";align-items:center;gap:2px 12px;padding:16px 18px;display:grid}.student-question-item__order{color:var(--color-accent);grid-area:order;font-size:.74rem;font-weight:700}.student-question-item__title{color:var(--color-text);grid-area:title;font-size:1.02rem;font-weight:600}.student-question-item__status{white-space:nowrap;grid-area:status;font-size:.8rem;font-weight:700}.student-question-item.is-open{cursor:pointer}.student-question-item.is-open:hover{border-color:#2563eb52;transform:translateY(-1px);box-shadow:0 10px 24px #2563eb1a}.student-question-item.is-open .student-question-item__status{color:var(--color-accent)}.student-question-item.is-done .student-question-item__status{color:#15803d}.student-question-item.is-locked{cursor:default;background:#f4f4f6b3}.student-question-item.is-wait .student-question-item__status,.student-question-item.is-locked .student-question-item__title{color:var(--color-text-soft)}.student-answer-view{flex-direction:column;gap:16px;display:flex}.student-back{color:var(--color-accent);cursor:pointer;background:0 0;border:none;align-self:flex-start;padding:4px 0;font-size:.92rem;font-weight:600}.student-back:hover{text-decoration:underline}.student-onboarding{flex-direction:column;gap:24px;padding-top:40px;display:flex}.student-onboarding__heading{letter-spacing:-.03em;color:var(--color-text);margin:0;font-size:clamp(1.9rem,8vw,2.5rem);font-weight:700;line-height:1.1}.student-onboarding__hint{color:var(--color-text-muted);margin:0;font-size:.94rem;line-height:1.65}.student-onboarding__form{flex-direction:column;gap:16px;display:flex}.submit-success{text-align:center;flex-direction:column;align-items:center;gap:20px;padding:56px 24px 40px;display:flex}.submit-success__icon{background:var(--color-success-soft);width:80px;height:80px;color:var(--color-success);border-radius:50%;flex-shrink:0;place-items:center;display:grid}.submit-success__heading{letter-spacing:-.03em;color:var(--color-text);margin:0;font-size:clamp(1.6rem,6vw,2rem);font-weight:700}.submit-success__desc{color:var(--color-text-muted);margin:0;font-size:1rem;line-height:1.65}.submit-success__edit{color:var(--color-accent);cursor:pointer;text-underline-offset:3px;background:0 0;border:none;padding:8px 4px;font-size:.94rem;font-weight:600;text-decoration:underline}.submit-success__edit:hover{color:var(--color-accent-strong)}.student-error{background:var(--color-danger-soft);color:var(--color-danger);border:1px solid #dc262638;border-radius:18px;padding:14px 16px;font-size:.92rem;font-weight:500;line-height:1.5}.student-already-submitted{color:var(--color-text-soft);text-align:center;margin:0;font-size:.85rem;line-height:1.55}.student-preview-bar{border:1px solid var(--color-border);background:#1d1d1f0a;border-radius:18px;justify-content:space-between;align-items:center;gap:12px;padding:10px 16px;display:flex}.student-preview-bar__label{color:var(--color-text-soft);white-space:nowrap;font-size:.8rem;font-weight:500}.student-preview-bar__modes{gap:4px;display:flex}.student-preview-bar__btn{color:var(--color-text-muted);cursor:pointer;transition:background-color var(--transition-base), color var(--transition-base);background:0 0;border:none;border-radius:999px;padding:5px 12px;font-size:.8rem;font-weight:600}.student-preview-bar__btn.is-active{background:var(--color-accent);color:#fff}.student-preview-bar__btn:not(.is-active):hover{color:var(--color-text);background:#1d1d1f12}.waiting-state{text-align:center}.waiting-state__title{color:var(--color-text);margin:0;font-size:1.2rem;font-weight:600}.waiting-state__desc{color:var(--color-text-muted);margin:0;line-height:1.65}.waiting-pulse{justify-content:center;align-items:center;gap:8px;margin:4px 0;display:flex}.waiting-pulse__dot{background:var(--color-accent);border-radius:50%;width:9px;height:9px;animation:1.5s ease-in-out infinite pulse-dot}.waiting-pulse__dot:nth-child(2){animation-delay:.25s}.waiting-pulse__dot:nth-child(3){animation-delay:.5s}@keyframes pulse-dot{0%,to{opacity:.2;transform:scale(.7)}50%{opacity:1;transform:scale(1)}}:root{--color-phase-intro:#5c7cfa;--color-phase-theory:#f59f00;--color-phase-practice:#37b24d;--color-phase-ethics:#ae3ec9;--color-phase-closing:#f03e3e}.phase-tag{letter-spacing:.03em;background:color-mix(in srgb, var(--phase-color) 14%, transparent);color:var(--phase-color);border:1px solid color-mix(in srgb, var(--phase-color) 24%, transparent);white-space:nowrap;border-radius:100px;align-items:center;padding:2px 10px;font-size:11px;font-weight:600;display:inline-flex}.planner-page{flex-direction:column;gap:24px;max-width:900px;margin:0 auto;display:flex}.planner-page__toolbar{justify-content:space-between;align-items:center;display:flex}.planner-page__section-heading{margin:0;font-size:18px;font-weight:600}.planner-empty{text-align:center;color:var(--color-text-muted);padding:48px 24px}.planner-empty p{margin:6px 0}.template-grid{grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:16px;display:grid}.template-card{flex-direction:column;gap:12px;display:flex}.template-card__header{justify-content:space-between;align-items:flex-start;gap:12px;display:flex}.template-card__title{margin:6px 0 4px;font-size:16px;font-weight:600}.template-card__desc{color:var(--color-text-muted);margin:0;font-size:13px}.template-card__phases{flex-direction:column;gap:6px;display:flex}.phase-block{color:var(--color-text-muted);align-items:center;gap:8px;font-size:13px;display:flex}.phase-block__label{flex:1}.phase-block__count{color:var(--color-text-soft);font-size:12px}.template-card__footer{border-top:1px solid var(--color-border);padding-top:8px}.template-card__meta{color:var(--color-text-soft);font-size:12px}.template-form{background:var(--color-surface-muted);border:1px solid var(--color-border);border-radius:12px;flex-direction:column;gap:20px;padding:24px;display:flex}.template-form__heading{margin:0 0 8px;font-size:16px;font-weight:600}.template-form__phases{flex-direction:column;gap:16px;display:flex}.template-form__phase-card{border-left:3px solid var(--phase-color,var(--color-border))}.template-form__phase-header{justify-content:space-between;align-items:center;gap:12px;margin-bottom:12px;display:flex}.template-form__phase-meta{flex:1;align-items:center;gap:10px;display:flex}.template-form__questions{flex-direction:column;gap:16px;margin-bottom:12px;display:flex}.template-form__question{background:var(--color-bg);border:1px solid var(--color-border);border-radius:8px;flex-direction:column;gap:8px;padding:12px;display:flex}.template-form__question-header{align-items:center;gap:8px;margin-bottom:4px;display:flex}.template-form__question-num{color:var(--color-accent);min-width:24px;font-size:12px;font-weight:700}.template-form__question-meta{flex-wrap:wrap;flex:1;gap:6px;display:flex}.template-form__add-phase{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.template-form__add-label{color:var(--color-text-muted);font-size:13px}.template-form__actions{justify-content:flex-end;display:flex}.select-sm{border:1px solid var(--color-border);background:var(--color-bg-strong);height:32px;color:var(--color-text);cursor:pointer;border-radius:6px;padding:0 8px;font-size:12px}.select-sm:focus{border-color:var(--color-accent);outline:none}.textarea-sm{border:1px solid var(--color-border);background:var(--color-bg-strong);width:100%;color:var(--color-text);resize:vertical;border-radius:6px;padding:8px 10px;font-family:inherit;font-size:13px}.textarea-sm:focus{border-color:var(--color-accent);outline:none}.form-field{flex-direction:column;gap:4px;display:flex}.form-label{color:var(--color-text-muted);font-size:12px;font-weight:500}.form-hint{color:var(--color-text-soft);font-size:12px;line-height:1.45}.form-error{color:var(--color-danger);margin:0;font-size:13px}.planner-page__phase-guide{background:var(--color-surface-muted);border:1px solid var(--color-border);border-radius:12px;padding:20px 24px}.planner-page__phase-guide h3{color:var(--color-text-muted);margin:0 0 12px;font-size:14px;font-weight:600}.phase-guide-row{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.phase-guide-step{align-items:center;gap:8px;display:flex}.phase-guide-arrow{color:var(--color-text-soft);font-size:14px}.stack-sm{flex-direction:column;gap:12px;display:flex}.login-card{flex-direction:column;gap:16px;max-width:400px;margin:0 auto;display:flex}.login-card__heading{text-align:center;margin:0 0 4px;font-size:20px;font-weight:600}.role-card--planner .feature-card__icon{background:color-mix(in srgb, var(--color-phase-intro) 12%, transparent);color:var(--color-phase-intro)}.builder-link-button{min-height:44px;color:var(--color-accent);transition:transform var(--transition-base), background-color var(--transition-base), border-color var(--transition-base), color var(--transition-base);background:#2563eb1a;border:1px solid #2563eb29;border-radius:999px;justify-content:center;align-items:center;gap:8px;padding:0 18px;font-size:.92rem;font-weight:600;display:inline-flex}.builder-link-button:hover{background:#2563eb24;border-color:#2563eb3d;transform:translateY(-1px)}.builder-link-button--ghost{color:var(--color-text);background:#ffffffb8;border-color:#d2d2d7d6}.builder-link-button--ghost:hover{background:#ffffffe6;border-color:#2563eb2e}.library-page{flex-direction:column;gap:24px;display:flex}.library-hero-card,.session-new-card,.builder-meta-card,.builder-upload-card,.builder-preset-card{padding:28px}.library-hero-card{grid-template-columns:minmax(0,1.4fr) auto;align-items:center;gap:20px;display:grid}.library-hero-card__copy,.library-hero-card__actions{flex-direction:column;gap:12px;display:flex}.library-hero-card__copy h2,.builder-section-head h3,.builder-toolbar__copy h2,.session-links-card h3{margin:0;font-size:clamp(1.45rem,2.2vw,2rem)}.library-hero-card__copy p,.builder-section-head p,.builder-toolbar__copy p,.library-section__header p,.session-links-card p,.session-template-preview p{color:var(--color-text-muted);margin:0;line-height:1.65}.library-hero-card__actions{align-items:flex-end}.library-section{flex-direction:column;gap:16px;display:flex}.library-section__header{justify-content:space-between;align-items:flex-end;gap:16px;display:flex}.library-section__header h3{margin:0 0 4px;font-size:1.24rem}.library-grid{grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:18px;display:grid}.library-template-card{flex-direction:column;gap:18px;padding:24px;display:flex}.library-template-card__header,.library-template-card__labels,.library-template-card__actions,.library-template-card__meta,.session-template-preview__meta,.builder-toolbar,.builder-summary-grid,.builder-slide-card__footer,.builder-interaction-card__header,.session-new-actions,.session-links-footer{flex-wrap:wrap;gap:10px;display:flex}.library-template-card__header{justify-content:space-between;align-items:center}.library-template-card__copy{flex-direction:column;gap:8px;display:flex}.library-template-card__copy h3{margin:0;font-size:1.1rem}.library-template-card__copy p{color:var(--color-text-muted);margin:0;line-height:1.65}.library-template-card__meta{color:var(--color-text-soft);font-size:.82rem}.library-template-card__tags{flex-wrap:wrap;gap:8px;display:flex}.library-template-tag,.library-template-phase{color:var(--color-text-muted);background:#1d1d1f0d;border-radius:999px;justify-content:center;align-items:center;padding:6px 10px;font-size:.78rem;font-weight:600;display:inline-flex}.library-template-card__phases{flex-wrap:wrap;gap:8px;display:flex}.library-template-card__actions{margin-top:auto}.library-empty-card{flex-direction:column;align-items:flex-start;gap:12px;padding:28px;display:flex}.library-empty-card strong{font-size:1rem}.library-empty-card p{color:var(--color-text-muted);margin:0}.library-section__panel{border:1px solid var(--color-border);background:var(--color-surface);scrollbar-gutter:stable;scrollbar-width:thin;scrollbar-color:#cbd5e1 transparent;border-radius:24px;height:220px;padding:18px;overflow:hidden auto}.library-section__panel::-webkit-scrollbar{width:8px}.library-section__panel::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:999px}.library-section__panel--empty{place-items:center;display:grid}.library-section__empty{color:var(--color-text-muted);text-align:center;flex-direction:column;align-items:center;gap:10px;display:flex}.library-section__empty strong{color:var(--color-text);font-size:1rem}.library-filter{flex-wrap:wrap;gap:8px;display:flex}.library-filter__option{border:1px solid var(--color-border);color:var(--color-text-muted);cursor:pointer;background:#fff;border-radius:999px;align-items:center;gap:8px;padding:8px 14px;font-size:14px;font-weight:700;transition:border-color .15s,background-color .15s,color .15s;display:inline-flex}.library-filter__option input{width:16px;height:16px;accent-color:var(--color-accent);cursor:pointer}.library-filter__option.isActive{background:var(--color-accent-soft);color:var(--color-accent);border-color:#93c5fd}.builder-page{flex-direction:column;gap:22px;display:flex}.builder-toolbar{justify-content:space-between;align-items:flex-end}.builder-toolbar__copy{flex-direction:column;gap:10px;display:flex}.builder-meta-card,.builder-upload-card,.builder-preset-card,.builder-generator-card,.builder-phase-card,.session-links-card{flex-direction:column;gap:20px;display:flex}.builder-section-head{justify-content:space-between;align-items:flex-start;gap:16px;display:flex}.builder-meta-grid,.builder-interaction-card__grid,.builder-interaction-card__bottom-grid,.session-new-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;display:grid}.builder-checkbox{color:var(--color-text-muted);align-items:center;gap:10px;font-size:.94rem;font-weight:500;display:inline-flex}.builder-optional-meta{border-top:1px solid var(--color-border);gap:16px;padding-top:16px;display:grid}.builder-optional-meta>summary{cursor:pointer;color:var(--color-text-muted);list-style:revert;font-size:.94rem;font-weight:600}.builder-optional-meta[open]>summary{margin-bottom:4px}.builder-upload-card__body{grid-template-columns:minmax(260px,340px) minmax(0,1fr);gap:18px;display:grid}.builder-summary-grid{grid-template-columns:repeat(5,minmax(0,1fr));display:grid}.builder-summary-tile{background:#ffffffd1;border:1px solid #d2d2d7d1;border-radius:24px;flex-direction:column;justify-content:space-between;gap:10px;min-height:112px;padding:16px;display:flex}.builder-summary-tile strong{font-size:1.05rem}.builder-summary-tile span{color:var(--color-text-soft);font-size:.82rem}.builder-slide-overview{grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:12px;display:grid}.builder-slide-overview__item{background:#ffffffd1;border:1px solid #d2d2d7d6;border-radius:22px;justify-content:space-between;align-items:center;gap:12px;padding:14px 16px;display:flex}.builder-slide-overview__item strong,.builder-slide-overview__item p{margin:0}.builder-slide-overview__item p{color:var(--color-text-muted);margin-top:2px;font-size:.86rem}.builder-slide-overview__meta{color:var(--color-text-soft);flex-direction:column;align-items:flex-end;gap:6px;font-size:.78rem;display:flex}.builder-preset-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;display:grid}.builder-preset-button{color:var(--color-text);text-align:left;transition:transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);background:#ffffffd6;border:1px solid #d2d2d7d6;border-radius:24px;flex-direction:column;align-items:flex-start;gap:10px;padding:18px;display:flex}.builder-preset-button:hover{border-color:#2563eb33;transform:translateY(-1px);box-shadow:0 12px 24px #2563eb14}.builder-preset-button__head{align-items:center;gap:8px;display:flex}.builder-preset-button span{color:var(--color-text-muted);line-height:1.55}.builder-phase-stack{flex-direction:column;gap:18px;display:flex}.builder-phase-card{padding:24px}.builder-phase-card__header{justify-content:space-between;align-items:flex-start;gap:16px;display:flex}.builder-phase-card__heading{align-items:flex-start;gap:12px;display:flex}.builder-phase-card__heading h3,.builder-phase-card__column-head strong{margin:0}.builder-phase-card__heading p,.builder-phase-card__column-head span,.builder-slide-card__text,.builder-slide-card__footer span,.builder-empty-state p{color:var(--color-text-muted);margin:0;line-height:1.6}.builder-phase-card__meta{gap:8px;display:flex}.builder-phase-card__content{grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:18px;display:grid}.builder-phase-card__column{flex-direction:column;gap:12px;display:flex}.builder-phase-card__column-head{justify-content:space-between;align-items:center;gap:12px;display:flex}.builder-slide-list,.builder-interaction-list{flex-direction:column;gap:12px;display:flex}.builder-empty-state{background:#fafafcd1;border:1px dashed #d2d2d7d6;border-radius:24px;padding:18px}.builder-slide-card,.builder-interaction-card,.session-link-card,.session-template-preview{background:#ffffffd1;border:1px solid #d2d2d7d6;border-radius:24px;padding:18px}.builder-slide-card{flex-direction:column;gap:10px;display:flex}.builder-slide-card__header,.builder-interaction-card__title-row,.session-template-preview{justify-content:space-between;align-items:flex-start;gap:12px;display:flex}.builder-slide-card__header strong{font-size:.98rem}.builder-slide-card__footer{justify-content:space-between;align-items:center}.builder-slide-card__footer .select-sm{min-width:110px}.builder-interaction-card{flex-direction:column;gap:16px;display:flex}.builder-interaction-card__header{justify-content:space-between;align-items:center}.builder-interaction-card__title-row,.builder-interaction-card__title-row .field{flex:1}.builder-interaction-card__index{min-height:52px;color:var(--color-text-soft);white-space:nowrap;align-items:center;font-size:.82rem;font-weight:700;display:inline-flex}.builder-interaction-card__actions{gap:6px;display:flex}.session-new-page{flex-direction:column;gap:22px;display:flex}.session-new-select{border-radius:18px;width:100%;min-height:52px;padding:0 16px;font-size:.95rem}.session-new-actions,.session-links-footer{justify-content:flex-end;align-items:center}.custom-session-options,.custom-session-stats,.custom-question-add-row{flex-wrap:wrap;gap:10px;display:flex}.custom-session-hero-grid{grid-template-columns:minmax(0,1.45fr) minmax(280px,.75fr);align-items:stretch;gap:20px;display:grid}.custom-session-options{background:#ffffffb8;border:1px solid #d2d2d7b8;border-radius:22px;justify-content:space-between;align-items:center;padding:14px 16px}.custom-session-stats{justify-content:flex-end}.custom-question-list-card{padding:24px}.custom-session-guide-card{flex-direction:column;justify-content:space-between;gap:20px;padding:28px;display:flex}.custom-session-guide-card h3,.custom-session-guide-card p{margin:0}.custom-session-guide-card h3{margin-top:12px;font-size:1.35rem}.custom-session-guide-card p{color:var(--color-text-muted);line-height:1.65}.custom-guide-steps{gap:10px;display:grid}.custom-guide-steps div{background:#ffffffc2;border:1px solid #d2d2d7c2;border-radius:18px;grid-template-columns:auto 1fr;align-items:center;gap:10px;padding:12px;display:grid}.custom-guide-steps strong{width:28px;height:28px;color:var(--color-accent);background:#2563eb1a;border-radius:50%;place-items:center;font-size:.82rem;display:grid}.custom-guide-steps span{color:var(--color-text-muted);font-weight:600}.custom-question-add-row{justify-content:flex-end}.session-template-preview{align-items:center}.session-result-grid{grid-template-columns:minmax(280px,340px) minmax(0,1fr);gap:20px;display:grid}.session-link-list{flex-direction:column;gap:12px;display:flex}.session-link-card{transition:transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);grid-template-columns:auto 1fr auto;align-items:center;gap:12px;display:grid}.session-link-card:hover{border-color:#2563eb2e;transform:translateY(-1px);box-shadow:0 12px 24px #2563eb14}.session-link-card strong,.session-link-card p{margin:0}.session-link-card p{color:var(--color-text-muted);overflow-wrap:anywhere;font-size:.82rem}.session-link-card__icon{width:42px;height:42px;color:var(--color-accent);background:#2563eb14;border-radius:16px;place-items:center;display:grid}@media (width<=1080px){.library-hero-card,.builder-upload-card__body,.builder-phase-card__content,.custom-session-hero-grid,.v2-flow-grid,.session-result-grid{grid-template-columns:1fr}.builder-preset-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.builder-summary-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}@media (width<=720px){.library-hero-card__actions,.builder-section-head,.home-section__head,.v2-flow-card__top,.library-section__header,.builder-phase-card__header,.builder-phase-card__heading,.builder-slide-card__footer,.session-template-preview,.session-new-actions,.custom-session-options,.session-links-footer{flex-direction:column;align-items:stretch}.builder-meta-grid,.builder-interaction-card__grid,.builder-interaction-card__bottom-grid,.session-new-grid,.builder-preset-grid,.builder-summary-grid{grid-template-columns:1fr}.builder-phase-card,.library-template-card,.session-links-card,.custom-session-guide-card,.v2-flow-card,.library-hero-card,.session-new-card,.builder-meta-card,.builder-upload-card,.builder-preset-card{padding:22px}.builder-interaction-card__title-row{flex-direction:column;align-items:stretch}.session-link-card{grid-template-columns:1fr}}.dh-page{min-height:100vh;color:var(--c-text);-webkit-font-smoothing:antialiased;background:linear-gradient(#f6faff 0%,#fff 52%,#f8fbff 100%);font-family:Pretendard,Inter,Noto Sans KR,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}.dh-page *,.dh-page :before,.dh-page :after{box-sizing:border-box}.dh-container{max-width:1280px;margin:0 auto;padding:0 32px}@media (width>=1280px){.dh-container{padding:0 40px}}.dh-main{padding-bottom:80px}.dh-btn{white-space:nowrap;cursor:pointer;border:1px solid #0000;justify-content:center;align-items:center;gap:8px;font-weight:800;text-decoration:none;transition:background-color .15s,border-color .15s,color .15s,transform .15s,box-shadow .15s;display:inline-flex}.dh-btn--lg{border-radius:14px;height:56px;padding:0 24px;font-size:15px}.dh-btn--md{border-radius:12px;height:48px;padding:0 18px;font-size:14px}.dh-btn--sm{border-radius:999px;height:40px;padding:0 16px;font-size:14px}.dh-btn--primary{background:var(--c-blue-500);color:#fff;box-shadow:var(--sh-btn)}.dh-btn--primary:hover{background:var(--c-blue-600)}.dh-btn--secondary{border-color:var(--c-border);color:var(--c-text);background:#fff}.dh-btn--secondary:hover{background:#f8fbff}.dh-btn--blueOutline{color:var(--c-blue-500);background:#fff;border-color:#bed5ff}.dh-btn--blueOutline:hover{background:#f8fbff}.dh-btn--greenOutline{color:var(--c-green-600);background:#fff;border-color:#bfebd6}.dh-btn--greenOutline:hover{background:var(--c-green-50)}.dh-btn--purpleOutline{color:var(--c-purple-500);background:#fff;border-color:#d8d0ff}.dh-btn--purpleOutline:hover{background:var(--c-purple-50)}.dh-btn--pillBlue{background:var(--c-blue-50);color:var(--c-blue-500);border-radius:999px}.dh-btn--pillBlue:hover{background:#e3effe}.dh-card{background:var(--c-card);border:1px solid var(--c-border);box-shadow:var(--sh-card);border-radius:22px}.dh-card--hover{transition:transform .15s,box-shadow .15s}.dh-card--hover:hover{box-shadow:var(--sh-card-hover);transform:translateY(-2px)}.dh-badge{border:1px solid #0000;border-radius:16px;flex-shrink:0;justify-content:center;align-items:center;display:inline-flex}.dh-badge--blue{background:var(--c-blue-50);color:var(--c-blue-500);border-color:#d7e7ff}.dh-badge--green{background:var(--c-green-50);color:var(--c-green-500);border-color:#cbefdd}.dh-badge--purple{background:var(--c-purple-50);color:var(--c-purple-500);border-color:#ded8ff}.dh-sec-title{letter-spacing:-.025em;margin:0;font-size:28px;font-weight:800;line-height:1.25}.dh-sec-desc{color:#5f6b7a;margin:8px 0 0;font-size:15px;font-weight:500}.dh-header{z-index:50;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--c-border-soft);height:72px;box-shadow:var(--sh-header);background:#ffffffe6;position:sticky;top:0}.dh-header-inner{justify-content:space-between;align-items:center;max-width:1280px;height:100%;margin:0 auto;padding:0 32px;display:flex}@media (width>=1280px){.dh-header-inner{padding:0 40px}}.dh-brand{align-items:center;gap:12px;display:flex}.dh-brand-logo{border-radius:12px;justify-content:center;align-items:center;width:40px;height:40px;display:flex;overflow:hidden}.dh-brand-title{letter-spacing:-.02em;font-size:20px;font-weight:800;line-height:1.15;display:block}.dh-brand-sub{color:var(--c-text-3);margin-top:1px;font-size:12px;font-weight:500;display:block}.dh-nav{align-items:center;gap:8px;display:flex}.dh-nav a{color:#1f2937;white-space:nowrap;border-radius:999px;align-items:center;height:40px;padding:0 16px;font-size:15px;font-weight:650;text-decoration:none;transition:background-color .15s,color .15s;display:inline-flex}.dh-nav a:hover,.dh-nav a.dh-nav--active{color:var(--c-blue-500)}.dh-account{border:1px solid var(--c-border);color:#4b5563;background:#fff;border-radius:999px;justify-content:center;align-items:center;width:40px;height:40px;transition:background-color .15s;display:inline-flex}.dh-account:hover{background:#f8fbff}.dh-account-wrap{position:relative}.dh-account-menu{z-index:60;border:1px solid var(--c-border);background:#fff;border-radius:14px;flex-direction:column;gap:2px;min-width:168px;padding:6px;display:flex;position:absolute;top:calc(100% + 8px);right:0;box-shadow:0 12px 28px #0f172a1f}.dh-account-menu-item{color:#374151;text-align:left;cursor:pointer;background:0 0;border:none;border-radius:10px;align-items:center;gap:10px;width:100%;padding:10px 12px;font-size:14px;transition:background-color .15s;display:flex}.dh-account-menu-item:hover{background:#f3f6fb}.dh-account-menu-item svg{color:#6b7280;flex:none}.dh-nav-toggle{display:none}.dh-hero{grid-template-columns:.95fr 1.25fr;align-items:center;gap:56px;margin-top:40px;display:grid;position:relative}.dh-hero-deco{pointer-events:none;z-index:0;position:absolute;inset:0;overflow:hidden}.dh-hero-deco span{filter:blur(2px);opacity:.5;border-radius:999px;position:absolute}.dh-hero-deco .b1{filter:blur(8px);opacity:1;background:radial-gradient(circle,#2563eb1f,#0000 70%);width:360px;height:360px;top:-60px;left:-120px}.dh-hero-deco .b2{background:var(--c-blue-100);opacity:.5;width:60px;height:60px;top:40px;left:360px}.dh-hero-deco .b3{opacity:.55;background:#bfdbfe;width:28px;height:28px;top:240px;left:300px}.dh-hero-left{z-index:1;position:relative}.dh-overline{color:var(--c-blue-500);margin:0 0 24px;font-size:17px;font-weight:700}.dh-headline{letter-spacing:-.045em;color:var(--c-text);margin:0;font-size:56px;font-weight:800;line-height:1.08}@media (width>=1280px){.dh-headline{font-size:64px}}.dh-hero-desc{color:var(--c-text-2);margin:28px 0 0;font-size:18px;font-weight:500;line-height:1.75}.dh-cta-row{flex-wrap:wrap;gap:14px;margin-top:30px;display:flex}.dh-hero-right{z-index:1;position:relative}.dh-qs{border-radius:24px;padding:32px;box-shadow:0 16px 40px #0f3d8a1a}.dh-qs-title{letter-spacing:-.025em;margin:0;font-size:24px;font-weight:800}.dh-qs-desc{color:#5f6b7a;margin:8px 0 0;font-size:15px;line-height:1.6}.dh-qs-actions{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:22px;display:grid}.dh-qs-actions .dh-btn{border-radius:14px;width:100%;height:52px}.dh-qs-inner{border:1px solid var(--c-border);background:linear-gradient(#fff 0%,#f9fcff 100%);border-radius:20px;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:24px;margin-top:26px;padding:26px;display:grid}.dh-qs-inner--empty{grid-template-columns:1fr}.dh-qs-label{color:var(--c-text-3);font-size:13px;font-weight:700}.dh-qs-class{letter-spacing:-.025em;margin-top:14px;font-size:24px;font-weight:800}.dh-qs-meta{color:var(--c-text-2);margin-top:10px;font-size:14px;font-weight:600}.dh-qs-code{color:var(--c-text-3);margin-top:14px;font-size:15px;font-weight:700}.dh-qs-code b{color:var(--c-blue-500);margin-left:8px}.dh-qs-btns{flex-wrap:wrap;gap:12px;margin-top:22px;display:flex}.dh-donut{background:conic-gradient(var(--c-blue-500) 0deg 290deg, #e5eefb 290deg 360deg);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:132px;height:132px;display:flex}.dh-donut-center{width:104px;height:104px;color:var(--c-text);background:#fff;border-radius:50%;justify-content:center;align-items:center;font-size:28px;font-weight:800;display:flex}.dh-section{margin-top:48px}.dh-grid-3{grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;display:grid}.dh-feature{min-height:190px;color:inherit;border:1px solid #e0eaf6;border-radius:22px;flex-direction:column;justify-content:space-between;padding:28px;text-decoration:none;display:flex}.dh-feature-icon{margin-bottom:18px}.dh-feature-title{letter-spacing:-.02em;margin:0;font-size:22px;font-weight:800}.dh-feature-desc{color:var(--c-text-2);margin:10px 0 0;font-size:15px;font-weight:500;line-height:1.65}.dh-feature-link{align-items:center;gap:6px;margin-top:24px;font-size:15px;font-weight:800;text-decoration:none;display:inline-flex}.dh-link--blue{color:var(--c-blue-500)}.dh-link--green{color:var(--c-green-600)}.dh-link--purple{color:var(--c-purple-500)}.dh-op-head{margin-bottom:20px}.dh-op{min-height:210px;color:inherit;border-radius:22px;grid-template-columns:auto minmax(0,1fr);align-items:center;gap:22px;padding:24px;text-decoration:none;display:grid}.dh-op-img{flex-shrink:0;justify-content:center;align-items:center;width:136px;height:136px;display:flex}.dh-op-img img{object-fit:contain;max-width:100%;max-height:100%}.dh-op-title{letter-spacing:-.02em;margin:0;font-size:20px;font-weight:800}.dh-op-desc{color:var(--c-text-2);margin:8px 0 0;font-size:14px;font-weight:500;line-height:1.65}.dh-op .dh-btn{margin-top:16px}.dh-plink{border-radius:22px;padding:26px 30px}.dh-plink-top{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;display:flex}.dh-plink-title{margin:0;font-size:20px;font-weight:800}.dh-plink-code{color:var(--c-text-3);gap:8px;font-size:14px;font-weight:800;display:flex}.dh-plink-code b{color:var(--c-blue-500)}.dh-plink-row{grid-template-columns:minmax(0,1fr) auto auto;gap:12px;margin-top:18px;display:grid}.dh-url{border:1px solid var(--c-border);height:48px;color:var(--c-text);text-overflow:ellipsis;white-space:nowrap;background:#fff;border-radius:12px;align-items:center;padding:0 18px;font-size:15px;font-weight:500;display:flex;overflow:hidden;box-shadow:inset 0 1px #0f3d8a05}.dh-plink-help{color:var(--c-text-3);margin:12px 0 0;font-size:13px;font-weight:500;line-height:1.5}.dh-grid-2{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;display:grid}.dh-bottom{border-radius:22px;min-height:240px;padding:30px}.dh-bottom-title{letter-spacing:-.02em;margin:0 0 18px;font-size:20px;font-weight:800}.dh-bottom-inner{align-items:center;gap:24px;display:grid}.dh-bottom-inner--steps{grid-template-columns:minmax(0,1fr) 170px}.dh-bottom-inner--checks{grid-template-columns:minmax(0,1fr) 160px}.dh-bottom-img{justify-content:center;align-items:center;display:flex}.dh-bottom-img--steps img{object-fit:contain;width:170px;height:auto;max-height:180px}.dh-bottom-img--checks img{object-fit:contain;width:150px;height:auto;max-height:175px}.dh-step{grid-template-columns:20px minmax(0,1fr);align-items:flex-start;gap:10px;margin-bottom:10px;display:grid}.dh-step-num{background:var(--c-blue-500);color:#fff;border-radius:999px;flex-shrink:0;justify-content:center;align-items:center;width:20px;height:20px;font-size:12px;font-weight:800;display:flex}.dh-step-text{color:var(--c-text-2);font-size:13px;font-weight:600;line-height:1.45}.dh-check-row{grid-template-columns:20px minmax(0,1fr);align-items:flex-start;gap:12px;margin-bottom:14px;display:grid}.dh-check-ic{color:var(--c-green-500);flex-shrink:0;margin-top:1px}.dh-check-text{color:var(--c-text-2);font-size:14px;font-weight:600;line-height:1.5}@media (width<=1023px){.dh-hero{grid-template-columns:1fr;gap:36px;margin-top:28px}.dh-nav{gap:18px}.dh-nav a:not(.dh-nav--active){display:none}}@media (width<=900px){.dh-grid-3{grid-template-columns:1fr}.dh-op{text-align:left;grid-template-columns:1fr;justify-items:start}.dh-op-img{width:100%;height:120px}}@media (width<=767px){.dh-container,.dh-header-inner{padding:0 20px}.dh-nav{display:none}.dh-nav-toggle{border:1px solid var(--c-border);color:#1f2937;background:#fff;border-radius:12px;justify-content:center;align-items:center;width:40px;height:40px;display:inline-flex}.dh-headline{font-size:40px;line-height:1.15}.dh-qs-actions{grid-template-columns:1fr}.dh-qs-inner{grid-template-columns:1fr;justify-items:start}.dh-donut{margin-top:8px}.dh-grid-2,.dh-plink-row,.dh-bottom-inner--steps,.dh-bottom-inner--checks{grid-template-columns:1fr}.dh-bottom-img{order:2}}@media (width<=480px){.dh-cta-row .dh-btn{flex:100%}}