:root {
  --brand:#0878B8;
  --brand-hover:#06679e;
  --brand-soft:#E8F4FA;
  --title:#123247;
  --text:#344B5A;
  --muted:#6B7F8C;
  --accent:#20B8C8;
  --background:#F4F9FC;
  --card:#FFFFFF;
  --border:#D8E6ED;
  --focus:#168FC7;
  --success:#16A36A;
  --error:#D64545;
  --placeholder:#91A2AD;
  --shadow:0 12px 32px rgba(24,72,96,.08);
  --radius:16px;
  --field-radius:10px;
  --content:1200px;
  --header-height:72px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-height) + 16px)}
body{margin:0;color:var(--text);background:var(--background);font:16px/1.7 Inter,"PingFang SC","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}
body.menu-open{overflow:hidden}
a{color:inherit;text-decoration:none}
button,input,select{font:inherit}
button{cursor:pointer}
img{max-width:100%}
[hidden]{display:none!important}
.skip-link{position:fixed;left:16px;top:-60px;z-index:100;padding:10px 16px;color:#fff;background:var(--brand);border-radius:8px}
.skip-link:focus{top:12px}
.page-shell{width:min(calc(100% - 48px),var(--content));margin-inline:auto}
.section{padding:88px 0}
.section-tinted{background:#EDF5F8}
.eyebrow{margin:0 0 8px;color:var(--brand);font-size:12px;font-weight:700;letter-spacing:.14em}
h1,h2,h3,h4,p{overflow-wrap:break-word}
h1,h2,h3,h4{color:var(--title)}
h2{margin:0;font-size:clamp(34px,3.3vw,46px);line-height:1.24;letter-spacing:-.025em}
.site-header{height:var(--header-height);position:sticky;top:0;z-index:40;background:rgba(255,255,255,.94);border-bottom:1px solid rgba(216,230,237,.9);transition:box-shadow .2s,background .2s;backdrop-filter:blur(12px)}
.site-header.scrolled{background:#fff;box-shadow:0 6px 20px rgba(24,72,96,.08)}
.nav-shell{width:min(calc(100% - 48px),var(--content));height:100%;margin:auto;display:flex;align-items:center;gap:32px}
.brand{display:flex;align-items:center;gap:12px;flex:none}
.brand-symbol{width:40px;height:40px;display:grid;place-items:center;color:#fff;background:linear-gradient(135deg,var(--brand),var(--accent));border-radius:10px;font-weight:800;letter-spacing:-.04em}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-text b{color:var(--title);font-size:16px;letter-spacing:.12em}
.brand-text small{margin-top:5px;color:var(--muted);font-size:8px;letter-spacing:.08em}
.primary-nav{margin-left:auto;display:flex;align-items:center;gap:28px}
.primary-nav a{position:relative;padding:23px 0 21px;color:var(--text);font-size:14px;transition:color .2s}
.primary-nav a:hover,.primary-nav a.active{color:var(--brand)}
.primary-nav a.active:after{content:"";position:absolute;left:0;right:0;bottom:0;height:3px;background:var(--brand);border-radius:3px 3px 0 0}
.nav-cta,.button{min-height:44px;display:inline-flex;align-items:center;justify-content:center;padding:0 22px;border-radius:10px;font-size:14px;font-weight:700;transition:background .2s,border-color .2s,box-shadow .2s,transform .2s}
.nav-cta,.button-primary{color:#fff;background:var(--brand);border:1px solid var(--brand)}
.nav-cta:hover,.button-primary:hover{background:var(--brand-hover);border-color:var(--brand-hover);box-shadow:0 8px 20px rgba(8,120,184,.18)}
.button-secondary{color:var(--brand);background:#fff;border:1px solid #A9C9DA}
.button-secondary:hover{background:var(--brand-soft);border-color:var(--brand)}
.menu-toggle{display:none;width:44px;height:44px;margin-left:auto;padding:10px;border:0;background:transparent;border-radius:8px}
.menu-toggle span{display:block;width:22px;height:2px;margin:5px auto;background:var(--title);transition:.2s}
.nav-overlay{position:fixed;z-index:35;inset:var(--header-height) 0 0;background:rgba(18,50,71,.28)}
.hero{background:#E8F6FB}
.hero-visual{width:100%;aspect-ratio:2400/811;overflow:hidden;background:#DDEFF6}
.hero-visual img{display:block;width:100%;height:100%;object-fit:contain;object-position:center}
.hero-summary{position:relative;margin-top:-32px;padding:32px 36px;display:grid;grid-template-columns:1fr 360px;align-items:center;gap:48px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}
.hero-copy h1{margin:0 0 8px;font-size:clamp(34px,3.6vw,48px);line-height:1.2;letter-spacing:-.03em}
.hero-copy>p:last-of-type{max-width:650px;margin:0;color:var(--muted)}
.hero-actions{margin-top:24px;display:flex;gap:12px}
.stage-card{padding-left:32px;border-left:1px solid var(--border)}
.status-label{display:block;color:var(--muted);font-size:13px}
.status-label i{display:inline-block;width:8px;height:8px;margin-right:8px;border-radius:50%;background:var(--success)}
.stage-card strong{display:block;margin:6px 0 0;color:var(--title);font-size:24px}
.stage-card p{margin:0;color:var(--muted);font-size:14px}
.countdown{margin-top:16px;padding-top:16px;border-top:1px solid var(--border)}
.countdown span{display:block;color:var(--muted);font-size:12px}
.countdown b{display:block;margin-top:3px;color:var(--brand);font:700 17px/1.5 Consolas,monospace}
.about{display:grid;grid-template-columns:.9fr 1.1fr;align-items:end;gap:96px}
.about-content>p{margin:0 0 28px;color:var(--text);font-size:17px}
.event-values{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.event-values article{padding:16px;background:#f5fafc;border:1px solid var(--border);border-radius:12px}.event-values b{display:block;margin-bottom:5px;color:var(--title);font-size:14px}.event-values span{display:block;color:var(--muted);font-size:12px;line-height:1.6}
.section-header{margin-bottom:40px;display:flex;justify-content:space-between;align-items:end;gap:64px}
.section-header>p{max-width:470px;margin:0;color:var(--muted)}
.track-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.track-card{min-height:400px;padding:36px;display:flex;flex-direction:column;background:var(--card);border:1px solid var(--border);border-top:4px solid var(--brand);border-radius:var(--radius);box-shadow:0 6px 18px rgba(24,72,96,.04);transition:transform .2s,border-color .2s,box-shadow .2s}
.track-card:hover{transform:translateY(-4px);border-color:#A9C9DA;box-shadow:var(--shadow)}
.track-creative{border-top-color:var(--accent)}
.track-number{color:var(--brand);font-size:13px;font-weight:800;letter-spacing:.1em}
.track-card h3{margin:24px 0 2px;font-size:30px}
.track-slogan{margin:0;color:var(--muted)}
.track-card ul{margin:28px 0 24px;padding:24px 0 0;list-style:none;border-top:1px solid var(--border)}
.track-card li{margin-bottom:16px;display:grid;grid-template-columns:90px 1fr;gap:12px}
.track-card li b{color:var(--title)}
.track-card li span{color:var(--muted);font-size:14px}
.track-card>a{margin-top:auto;color:var(--brand);font-weight:700}
.track-card>a span{display:inline-block;margin-left:6px;transition:transform .2s}
.track-card>a:hover span{transform:translateX(4px)}
.timeline{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));width:100%;margin-inline:auto}
.timeline article{position:relative;padding:0;text-align:center}
.timeline article:before{content:"";position:absolute;top:45px;left:calc(50% + 13px);width:calc(100% - 26px);height:2px;background:var(--border)}
.timeline article:last-child:before{display:none}
.timeline time{color:var(--muted);font-size:13px;font-weight:700}
.timeline-dot{position:relative;z-index:1;box-sizing:border-box;width:26px;height:26px;margin:16px auto 18px;display:block;background:#fff;border:7px solid #AFC3CE;border-radius:50%;box-shadow:0 0 0 1px var(--border)}
.timeline article.current .timeline-dot{border-color:var(--brand);box-shadow:0 0 0 4px rgba(8,120,184,.12)}
.timeline article.current h3,.timeline article.current time{color:var(--brand)}
.timeline article.future{opacity:.64}
.timeline h3{margin:0 0 6px;font-size:18px}
.timeline p{margin:0;color:var(--muted);font-size:14px;line-height:1.6}
.rules-layout{display:grid;grid-template-columns:1fr 1fr;gap:32px}
.rules-panel,.awards-panel{padding:36px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:0 6px 20px rgba(24,72,96,.04)}
.section-heading.compact h2{font-size:32px}
.rule-list{margin:28px 0 18px}
.rule-list article{padding:16px 0;display:grid;grid-template-columns:96px 1fr;gap:16px;border-bottom:1px solid var(--border)}
.rule-list article>span{color:var(--muted);font-size:14px}
.rule-list strong{color:var(--title)}
.rule-list p{margin:2px 0 0;color:var(--muted);font-size:14px}
.text-link{color:var(--brand);font-weight:700}
.award-list{margin-top:28px;display:grid;grid-template-columns:1fr 1fr;gap:12px}
.award-list article{padding:20px;border:1px solid var(--border);border-radius:12px;background:#FAFCFD}
.award-list .award-top{background:var(--brand-soft);border-color:#B8D8E7}
.award-list span{color:var(--muted);font-size:13px}
.award-list strong{display:block;margin:5px 0;color:var(--brand);font-size:27px}
.award-list p{margin:0;color:var(--muted);font-size:13px}
.panel-note{margin:20px 0 0;color:var(--muted);font-size:13px}
.registration{padding:96px 0;background:var(--background)}
.registration-shell{display:grid;grid-template-columns:minmax(300px,35fr) minmax(0,65fr);gap:48px;align-items:start}
.registration-intro{position:sticky;top:calc(var(--header-height) + 32px)}
.registration-intro h2{font-size:44px}
.registration-lead{margin:16px 0 28px;color:var(--muted)}
.registration-steps{margin:0;padding:0;list-style:none}
.registration-steps li{padding:0 0 20px;display:grid;grid-template-columns:34px 1fr;gap:14px;position:relative}
.registration-steps li:not(:last-child):before{content:"";position:absolute;left:16px;top:34px;bottom:0;width:1px;background:var(--border)}
.registration-steps li>span{width:34px;height:34px;display:grid;place-items:center;color:var(--brand);background:var(--brand-soft);border-radius:50%;font-size:13px;font-weight:800}
.registration-steps b{color:var(--title)}
.registration-steps p{margin:2px 0 0;color:var(--muted);font-size:13px}
.privacy-card{margin-top:8px;padding:20px;background:#EDF5F8;border-radius:12px}
.privacy-card b{color:var(--title)}
.privacy-card p{margin:6px 0 0;color:var(--muted);font-size:13px}
.contact-card{margin-top:16px;padding:18px 20px;display:grid;grid-template-columns:1fr auto;align-items:center;background:#fff;border:1px solid var(--border);border-radius:12px}
.contact-card span{grid-column:1/-1;color:var(--muted);font-size:12px}
.contact-card b{color:var(--title)}
.contact-card a{color:var(--brand);font-weight:700}
.registration-form{padding:40px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}
.form-header{padding-bottom:24px;border-bottom:1px solid var(--border)}
.form-header h3{margin:0;font-size:26px}
.form-header p{margin:5px 0 0;color:var(--muted);font-size:14px}
.required{color:var(--error)}
.form-section{padding:28px 0;border-bottom:1px solid #E7EFF3}
.field-group{min-width:0;margin:0;padding:0;border:0}
.field-group legend,.field>label,.label-row label{display:block;margin-bottom:10px;color:var(--title);font-size:15px;font-weight:700}
.field-group legend small{margin-left:8px;color:var(--muted);font-size:12px;font-weight:400}
.choice-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.choice-card{min-height:86px;padding:16px;display:flex;align-items:flex-start;gap:12px;position:relative;background:#fff;border:1px solid var(--border);border-radius:12px;cursor:pointer;transition:background .2s,border-color .2s,box-shadow .2s}
.choice-card:hover{border-color:#A5C3D2}
.choice-card input{position:absolute;width:1px;height:1px;opacity:0}
.choice-indicator,.check-indicator{width:20px;height:20px;display:grid;place-items:center;flex:none;margin-top:2px;background:#fff;border:1.5px solid #9EB4C0;color:transparent}
.choice-indicator{border-radius:50%}
.check-indicator{border-radius:5px;font-size:12px;font-weight:900}
.choice-card b,.choice-card small{display:block}
.choice-card b{color:var(--title);font-size:15px}
.choice-card small{margin-top:3px;color:var(--muted);font-size:12px;line-height:1.5}
.choice-card:has(input:checked){background:var(--brand-soft);border-color:var(--brand);box-shadow:0 0 0 1px var(--brand)}
.choice-card:has(input:checked) .choice-indicator{border:6px solid var(--brand)}
.choice-card:has(input:checked) .check-indicator{color:#fff;background:var(--brand);border-color:var(--brand)}
.choice-card:has(input:focus-visible){outline:3px solid rgba(22,143,199,.22);outline-offset:2px}
.field{margin-top:20px}
.form-section>.field:first-child{margin-top:0}
.label-row{display:flex;justify-content:space-between;align-items:center}
.char-count{color:var(--muted);font-size:12px}
.two-columns{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.two-columns .field{margin-top:0}
input[type=text],input[type=tel],select{width:100%;height:52px;padding:0 15px;color:var(--text);font-size:15px;background:#fff;border:1px solid var(--border);border-radius:var(--field-radius);box-shadow:none;appearance:none;transition:border-color .15s,box-shadow .15s,background .15s}
input::placeholder{color:var(--placeholder)}
input:hover,select:hover{border-color:#A8C0CC}
input:focus,select:focus{border-color:var(--focus);box-shadow:0 0 0 3px rgba(22,143,199,.16);outline:0}
input:focus-visible,select:focus-visible,button:focus-visible,a:focus-visible{outline:3px solid rgba(22,143,199,.25);outline-offset:2px}
input[aria-invalid=true],select[aria-invalid=true]{border-color:var(--error);box-shadow:0 0 0 3px rgba(214,69,69,.1)}
input:disabled,select:disabled{color:#758996;background:#EEF3F5;cursor:not-allowed}
.select-wrap{position:relative}
.select-wrap:after{content:"";position:absolute;right:17px;top:20px;width:8px;height:8px;border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);transform:rotate(45deg);pointer-events:none}
.field-help{margin:6px 0 0;color:var(--muted);font-size:12px}
.field-error{min-height:0;margin:6px 0 0;color:var(--error);font-size:13px;line-height:1.5}
.field-error:empty{display:none}
.members-heading{margin-bottom:16px;display:flex;justify-content:space-between;align-items:center;gap:16px}
.members-heading h4{margin:0;font-size:18px}
.members-heading p{margin:2px 0 0;color:var(--muted);font-size:13px}
.button-add{min-height:42px;flex:none;color:var(--brand);background:#fff;border:1px solid #A9C9DA}
.button-add:hover{background:var(--brand-soft);border-color:var(--brand)}
.button-add:disabled{color:#84949D;background:#EEF3F5;border-color:var(--border);cursor:not-allowed}
.members-list{display:grid;gap:16px}
.member-card{padding:20px;background:#F8FBFC;border:1px solid var(--border);border-radius:14px}
.member-card-header{margin-bottom:16px;display:flex;justify-content:space-between;align-items:center}
.member-card-header strong{color:var(--title)}
.member-card-header span{margin-left:8px;padding:3px 8px;color:var(--brand);background:var(--brand-soft);border-radius:20px;font-size:11px}
.remove-member{min-width:44px;min-height:44px;padding:0 10px;color:var(--error);background:transparent;border:0;border-radius:8px;font-size:13px}
.remove-member:hover{background:#FDEDED}
.member-fields{display:grid;grid-template-columns:1fr 1.25fr 1.15fr;gap:14px}
.member-fields .field{margin:0}
.member-limit{margin:10px 0 0;color:var(--muted);font-size:12px}
.member-limit.limit-reached{color:var(--brand);font-weight:700}
.agreement-section{padding-bottom:20px}
.agreement{min-height:44px;display:flex;align-items:flex-start;gap:10px;position:relative;cursor:pointer}
.agreement input{position:absolute;width:1px;height:1px;opacity:0}
.agreement-box{width:20px;height:20px;margin-top:3px;display:grid;place-items:center;flex:none;color:transparent;background:#fff;border:1.5px solid #9EB4C0;border-radius:5px;font-size:12px;font-weight:900}
.agreement input:checked+.agreement-box{color:#fff;background:var(--brand);border-color:var(--brand)}
.agreement:has(input:focus-visible) .agreement-box{outline:3px solid rgba(22,143,199,.22);outline-offset:2px}
.agreement a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.agreement-section.has-error{padding:14px;border:1px solid var(--error);border-radius:10px;background:#FFF9F9}
.form-status{margin-top:20px;padding:0;color:var(--error);font-size:14px}
.form-status:not(:empty){padding:12px 14px;background:#FFF4F4;border-radius:8px}
.submit-button{width:100%;height:54px;margin-top:18px;display:flex;align-items:center;justify-content:center;gap:10px;color:#fff;background:var(--brand);border:1px solid var(--brand);border-radius:10px;font-weight:800;transition:background .2s,box-shadow .2s,transform .1s}
.submit-button:hover{background:var(--brand-hover);box-shadow:0 8px 20px rgba(8,120,184,.18)}
.submit-button:active{transform:translateY(1px)}
.submit-button:disabled{background:#86A9BA;border-color:#86A9BA;box-shadow:none;cursor:wait}
.spinner{display:none;width:18px;height:18px;border:2px solid rgba(255,255,255,.45);border-top-color:#fff;border-radius:50%;animation:spin .75s linear infinite}
.submit-button.loading .spinner{display:block}
.submit-note{margin:10px 0 0;text-align:center;color:var(--muted);font-size:12px}
/* V4.1：参赛须知 */
.guidelines-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.guideline-card{padding:24px 26px;display:grid;grid-template-columns:auto 1fr;gap:16px;background:#fff;border:1px solid #cfe0e8;border-top:4px solid var(--brand);border-radius:var(--radius);box-shadow:0 10px 28px rgba(18,70,98,.06);transition:border-color .2s,box-shadow .2s,transform .2s}
.guideline-card:hover{transform:translateY(-2px);border-color:#b8d4e0;box-shadow:0 14px 34px rgba(25,73,97,.09)}
.guideline-card.critical{border-top-color:var(--error)}
.guideline-card.wide{grid-column:1/-1}
.guideline-icon{width:46px;height:46px;display:grid;place-items:center;background:var(--brand-soft);border-radius:12px;font-size:22px;flex:none}
.guideline-card.critical .guideline-icon{background:#fdeeee}
.guideline-body{min-width:0}
.guideline-body h3{margin:0 0 10px;color:var(--title);font-size:17px}
.guideline-body ul{margin:0;padding:0 0 0 18px;color:var(--text);font-size:14px;line-height:1.8}
.guideline-body li{margin:0 0 6px}
.guideline-body li:last-child{margin:0}
.guideline-body li strong{color:var(--title)}
.guideline-cols{columns:2;column-gap:32px}
.guidelines-note{margin:20px 0 0;padding:14px 20px;display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:4px 10px;text-align:center;color:var(--muted);font-size:13px;background:#fff;border:1px solid #cfe4ed;border-radius:12px}
.guidelines-note span{color:var(--success);font-weight:800}
.guidelines-note a{color:var(--brand);font-weight:700;white-space:nowrap}
@media(max-width:1024px){.guidelines-grid{gap:14px}.guideline-card{padding:22px}.guideline-cols{columns:2}}
@media(max-width:680px){.guidelines-grid{grid-template-columns:1fr}.guideline-card{grid-template-columns:auto 1fr;padding:20px}.guideline-cols{columns:1}}
footer{padding:32px 0;color:#D7E5EC;background:#123247;font-size:13px}
.footer-inner{display:flex;justify-content:space-between;gap:32px}
.footer-inner span:last-child{text-align:right;color:#AFC3CE}
.toast{position:fixed;z-index:70;right:24px;bottom:24px;max-width:min(420px,calc(100% - 32px));padding:12px 18px;color:#fff;background:var(--error);border-radius:10px;box-shadow:var(--shadow);opacity:0;transform:translateY(12px);pointer-events:none;transition:.2s}
.toast.show{opacity:1;transform:none}
.modal{position:fixed;z-index:80;inset:0;display:grid;place-items:center;padding:20px;background:rgba(18,50,71,.45);backdrop-filter:blur(4px)}
.modal-card{width:min(100%,430px);padding:40px;text-align:center;background:#fff;border-radius:var(--radius);box-shadow:0 24px 70px rgba(18,50,71,.2)}
.success-icon{width:58px;height:58px;margin:auto;display:grid;place-items:center;color:#fff;background:var(--success);border-radius:50%;font-size:26px}
.modal-card h2{margin:16px 0 6px;font-size:30px}
.modal-card p{margin:0;color:var(--muted)}
.modal-card strong{display:block;margin:12px 0 24px;color:var(--brand);font:700 17px/1.5 Consolas,monospace}
.modal-card button{width:100%;height:48px;color:#fff;background:var(--brand);border:0;border-radius:10px;font-weight:700}
@keyframes spin{to{transform:rotate(360deg)}}
@media(max-width:1024px){
  .primary-nav{gap:18px}.primary-nav a{font-size:13px}.hero-summary{grid-template-columns:1fr 310px;gap:32px}.about{gap:56px}.registration-shell{grid-template-columns:minmax(270px,35fr) minmax(0,65fr);gap:32px}.registration-form{padding:32px}.member-fields{grid-template-columns:1fr 1fr}.member-fields .field:last-child{grid-column:1/-1}
}
@media(max-width:1120px){
  :root{--header-height:64px}.page-shell,.nav-shell{width:min(calc(100% - 32px),var(--content))}.section{padding:72px 0}.menu-toggle{display:block}.nav-cta{display:none}.primary-nav{position:fixed;z-index:45;top:var(--header-height);left:0;right:0;margin:0;padding:8px 16px 20px;display:none;align-items:stretch;flex-direction:column;gap:0;background:#fff;border-bottom:1px solid var(--border);box-shadow:var(--shadow)}.primary-nav.open{display:flex}.primary-nav a{padding:13px 10px;font-size:15px;border-radius:8px}.primary-nav a.active{background:var(--brand-soft)}.primary-nav a.active:after{display:none}.menu-toggle[aria-expanded=true] span:nth-child(1){transform:translateY(7px) rotate(45deg)}.menu-toggle[aria-expanded=true] span:nth-child(2){opacity:0}.menu-toggle[aria-expanded=true] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}.hero-summary{margin-top:-16px;grid-template-columns:1fr}.stage-card{padding:20px 0 0;border-left:0;border-top:1px solid var(--border)}.about,.rules-layout,.registration-shell{grid-template-columns:1fr}.registration-intro{position:static}.section-header{align-items:start;gap:32px}.registration-shell{gap:32px}.registration-intro h2{font-size:40px}.registration-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.registration-steps li{padding:0;display:block}.registration-steps li:not(:last-child):before{display:none}.registration-steps li>span{margin-bottom:10px}.privacy-card,.contact-card{max-width:none}
}
@media(max-width:680px){
  h2{font-size:34px}.section-header{display:block}.section-header>p{margin-top:16px}.hero-copy h1{font-size:34px}.hero-summary{padding:24px}.track-grid{grid-template-columns:1fr}.track-card{min-height:auto;padding:28px}.timeline{grid-template-columns:1fr;gap:20px;width:100%}.timeline article{padding:0 0 8px 44px;text-align:left}.timeline article:before{top:26px;bottom:-21px;left:12px;right:auto;width:2px;height:auto}.timeline article:last-child:before{display:none}.timeline-dot{position:absolute;left:0;top:4px;box-sizing:border-box;margin:0}.timeline time{display:block}.award-list{grid-template-columns:1fr}.registration-steps{grid-template-columns:1fr}.registration-steps li{display:grid}.registration-steps li:not(:last-child):before{display:block}.choice-grid,.two-columns{grid-template-columns:1fr}.member-fields{grid-template-columns:1fr}.member-fields .field:last-child{grid-column:auto}.registration-form{padding:28px 24px}.footer-inner{display:block}.footer-inner span{display:block}.footer-inner span:last-child{margin-top:10px;text-align:left}
}
@media(max-width:420px){
  .page-shell,.nav-shell{width:calc(100% - 32px)}.brand-text small{display:none}.hero-visual{aspect-ratio:2400/811}.hero-summary{margin-top:0;border-inline:0;border-radius:0;padding:24px 16px}.hero .page-shell{width:100%}.hero-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px}.hero-actions .button{padding-inline:10px}.section{padding:64px 0}.about{gap:32px}.event-values{grid-template-columns:1fr}.track-card{padding:24px}.rules-panel,.awards-panel{padding:24px}.registration{padding:64px 0}.registration-intro h2{font-size:36px}.registration-form{padding:24px 20px}.form-header h3{font-size:23px}.choice-card{min-height:82px;padding:14px}.members-heading{align-items:flex-start;flex-direction:column}.button-add{width:100%}.member-card{padding:16px}.agreement{font-size:14px}.toast{right:16px;bottom:16px}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}

/* 第二版：账号、报名状态与作品工作台 */
.identity-section,.work-section{scroll-margin-top:88px}.state-card{padding:40px;text-align:center;background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.state-card h3{margin:0 0 6px;font-size:24px}.state-card p{margin:0 0 20px;color:var(--muted)}.compact-form{max-width:820px;margin:auto}.readonly-row{margin-top:20px}.readonly-row .field{margin:0}.search-row{display:grid;grid-template-columns:1fr auto;gap:12px}.search-results,.selected-members{display:grid;gap:10px;margin-top:14px}.person-row{padding:14px 16px;display:flex;align-items:center;justify-content:space-between;gap:16px;background:#f7fafc;border:1px solid var(--border);border-radius:10px}.person-row b,.person-row small{display:block}.person-row small{color:var(--muted)}.person-row button{min-height:40px;padding:0 14px;color:var(--brand);background:#fff;border:1px solid #a9c9da;border-radius:8px}.summary-card{padding:36px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.summary-head{display:flex;justify-content:space-between;align-items:flex-start;gap:24px}.summary-head h3{margin:8px 0 0;font-size:26px}.summary-head>strong{color:var(--brand);font-family:Consolas,monospace}.status-pill{padding:5px 10px;color:var(--success);background:#e8f7f0;border-radius:20px;font-size:12px;font-weight:800}.summary-card dl{margin:28px 0;display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.summary-card dl div{padding:14px;background:#f6fafc;border-radius:10px}.summary-card dt{color:var(--muted);font-size:12px}.summary-card dd{margin:4px 0 0;color:var(--title);font-weight:700}.summary-members{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.work-section{background:#fff}.work-toolbar{margin-bottom:20px;padding:18px 20px;display:flex;justify-content:space-between;align-items:center;gap:16px;background:var(--brand-soft);border-radius:12px}.work-toolbar b,.work-toolbar span{display:block}.work-toolbar span{color:var(--muted);font-size:13px}.work-list{margin-bottom:24px;display:grid;gap:14px}.work-card{padding:20px;display:grid;grid-template-columns:1fr auto;gap:16px;background:#f7fafc;border:1px solid var(--border);border-radius:14px}.work-card h3{margin:0 0 4px;font-size:18px}.work-meta{color:var(--muted);font-size:13px}.work-badges{display:flex;gap:6px;flex-wrap:wrap}.work-badges span{padding:4px 8px;color:var(--brand);background:var(--brand-soft);border-radius:20px;font-size:11px}.final-form{grid-column:1/-1;padding-top:14px;border-top:1px solid var(--border)}.final-form .search-row{grid-template-columns:1fr auto}.work-form{max-width:900px;margin:auto}.file-input{height:auto!important;padding:12px 14px!important}.challenge-select select{height:auto;min-height:64px;padding:12px 48px 12px 15px;white-space:normal}.footer-grid{display:grid;grid-template-columns:1fr auto;align-items:center;gap:48px}.footer-grid b{color:#fff;font-size:16px}.footer-grid p{margin:8px 0;color:#afc3ce}.qr-card{margin:0;padding:12px;text-align:center;background:#fff;border-radius:12px}.qr-card img{display:block;width:132px;height:132px;object-fit:cover}.qr-card figcaption{margin-top:6px;color:var(--title);font-size:12px}.account-card{position:fixed;z-index:34;left:20px;bottom:20px;max-width:320px;padding:12px 14px;display:flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--border);border-radius:14px;box-shadow:0 12px 32px rgba(18,50,71,.16)}.account-avatar{width:38px;height:38px;display:grid;place-items:center;flex:none;color:#fff;background:var(--brand);border-radius:10px;font-weight:800}.account-card b,.account-card small{display:block}.account-card b{color:var(--title);font-size:13px}.account-card small{color:var(--muted);font-size:11px}.account-card button{margin-left:auto;padding:6px;color:var(--brand);background:transparent;border:0;font-size:12px}.toast{background:var(--title)}
@media(max-width:860px){.summary-card dl{grid-template-columns:1fr 1fr}.work-toolbar{align-items:flex-start}.account-card{left:16px;bottom:16px;max-width:calc(100% - 32px)}}
@media(max-width:680px){.summary-card{padding:24px}.summary-card dl,.summary-members{grid-template-columns:1fr}.summary-head,.work-toolbar,.person-row{align-items:stretch;flex-direction:column}.work-card{grid-template-columns:1fr}.search-row,.final-form .search-row{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.qr-card{justify-self:start}.qr-card img{width:120px;height:120px}.account-card{right:16px}.work-form{padding:24px 20px}}

/* V3：作品流程、阶段状态与精致表单控件 */
input[type=url],input[type=password]{width:100%;height:52px;padding:0 15px;color:var(--text);font-size:15px;background:#fff;border:1px solid var(--border);border-radius:var(--field-radius);outline:0;transition:border-color .15s,box-shadow .15s,background .15s}
.registration-form{overflow:hidden;border-color:#cfe0e8;box-shadow:0 18px 50px rgba(18,70,98,.09)}
.registration-form input:not([type=radio]):not([type=checkbox]):not([type=file]),.registration-form select{background:#fbfdfe;border-color:#cbdde6}
.registration-form input:not([type=radio]):not([type=checkbox]):hover,.registration-form select:hover{background:#fff;border-color:#8fb7ca}
.registration-form input:not([type=radio]):not([type=checkbox]):focus,.registration-form select:focus{background:#fff;border-color:var(--brand);box-shadow:0 0 0 4px rgba(8,120,184,.11)}
.work-toolbar{padding:22px 24px;background:linear-gradient(135deg,#eaf7fc,#f3fbfd);border:1px solid #cce7f1}
.work-toolbar small{display:block;margin-top:3px;color:#61808f;font-size:12px}
.template-button{gap:9px;box-shadow:0 6px 16px rgba(8,120,184,.08)}
.template-button>span{font-size:18px;line-height:1}
.work-list{gap:16px}
.work-card{padding:24px;background:#fff;border-color:#d6e5ec;box-shadow:0 8px 24px rgba(25,73,97,.06);transition:border-color .2s,box-shadow .2s,transform .2s}
.work-card:hover{border-color:#b8d4e0;box-shadow:0 14px 34px rgba(25,73,97,.09);transform:translateY(-1px)}
.work-card-main{min-width:0}.work-card-side{text-align:right}.work-card-side>strong{display:block;color:#72909f;font:600 12px/1.5 Consolas,monospace}.edit-work{margin-top:14px;min-height:38px;padding:0 14px}
.work-card h3{margin:12px 0 8px;font-size:20px;line-height:1.45}.work-meta{margin:0;display:flex;gap:8px 18px;flex-wrap:wrap}.work-meta span{position:relative}.work-meta span+span:before{content:"";position:absolute;left:-10px;top:8px;width:3px;height:3px;background:#9fb2bc;border-radius:50%}
.work-badges span{padding:5px 10px;font-weight:700}.work-badges .stage-badge{color:#6d7780;background:#eef2f4}.work-badges .stage-初赛{color:#0878b8;background:#e8f4fa}.work-badges .stage-复赛{color:#876108;background:#fff4d6}.work-badges .stage-决赛{color:#8c3e68;background:#faeaf2}
.work-stage-note{grid-column:1/-1;margin:2px 0 0;padding:13px 15px;color:#647d8a;background:#f3f8fa;border-radius:9px;font-size:13px}
.final-form{margin-top:4px;padding:20px;background:#f6fafc;border:1px solid #dce9ef;border-radius:12px}.final-form>label{display:block;margin-bottom:10px;color:var(--title);font-size:14px;font-weight:700}.final-input-row{display:grid;grid-template-columns:1fr auto;gap:10px}
.work-form{margin-top:30px;padding:0 38px 38px;border-top:4px solid var(--brand)}.work-form .form-header{margin-inline:-38px;padding:28px 38px 24px;display:flex;justify-content:space-between;align-items:center;gap:20px;background:linear-gradient(135deg,#f5fbfe,#fff)}
.form-kicker{display:block;margin-bottom:4px;color:var(--brand);font-size:11px;font-weight:800;letter-spacing:.15em}
.work-form .form-section{padding:26px 0}.challenge-select select{line-height:1.5;background:#fbfdfe}
.file-input-native{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}
.file-picker{min-height:94px;padding:16px 18px;display:grid!important;grid-template-columns:44px 1fr auto;align-items:center;gap:14px;background:#f7fbfd;border:1.5px dashed #9fc5d6;border-radius:12px;cursor:pointer;transition:.2s}
.file-picker:hover{background:#eef8fc;border-color:var(--brand)}.file-picker:has(+input:focus-visible){outline:3px solid rgba(22,143,199,.22);outline-offset:2px}
.file-picker-icon{width:44px;height:44px;display:grid;place-items:center;color:#fff;background:linear-gradient(135deg,var(--brand),var(--accent));border-radius:11px;font-size:22px;font-weight:300}.file-picker b,.file-picker small{display:block}.file-picker b{color:var(--title);font-size:14px}.file-picker small{margin-top:3px;color:var(--muted);font-size:12px}.file-picker-action{padding:8px 12px;color:var(--brand);background:#fff;border:1px solid #b3d2df;border-radius:8px;font-size:12px;font-weight:700}
.empty-work{box-shadow:none;border-style:dashed}.empty-work>span{width:44px;height:44px;margin:0 auto 12px;display:grid;place-items:center;color:var(--brand);background:var(--brand-soft);border-radius:12px;font-weight:900}
@media(max-width:680px){.work-form{padding:0 20px 24px}.work-form .form-header{margin-inline:-20px;padding:24px 20px;align-items:flex-start;flex-direction:column}.work-card-side{text-align:left}.work-card-side>strong{overflow-wrap:anywhere}.final-input-row{grid-template-columns:1fr}.file-picker{grid-template-columns:40px 1fr}.file-picker-action{grid-column:1/-1;text-align:center}.work-meta{display:block}.work-meta span{display:block}.work-meta span+span:before{display:none}}

.registration-form input:not([type]),.search-row input:not([type]){width:100%;height:52px;padding:0 15px;color:var(--text);font-size:15px;background:#fbfdfe;border:1px solid #cbdde6;border-radius:var(--field-radius);outline:0;transition:border-color .15s,box-shadow .15s,background .15s}
.registration-form input:not([type]):hover,.search-row input:not([type]):hover{background:#fff;border-color:#8fb7ca}
.registration-form input:not([type]):focus,.search-row input:not([type]):focus{background:#fff;border-color:var(--brand);box-shadow:0 0 0 4px rgba(8,120,184,.11)}

.account-actions{margin-left:auto;display:flex;align-items:center;gap:2px}.account-actions button{margin:0}

/* 中台人员搜索与团队成员自动填充 */
.member-count{padding:5px 10px;color:var(--brand);background:var(--brand-soft);border-radius:20px;font-size:12px;font-weight:800}
.member-search-row{align-items:stretch}.member-search-box{position:relative}.member-search-box>span{position:absolute;z-index:1;left:16px;top:10px;color:#78909c;font-size:23px;line-height:32px}.member-search-box input{padding-left:46px!important}
.search-results{margin-top:18px;padding-top:18px;border-top:1px dashed #cadde6}.search-result-title,.selected-members-title{margin-bottom:10px;color:var(--title);font-size:13px;font-weight:800}
.member-profile{padding:16px;display:grid;grid-template-columns:44px minmax(0,1fr) auto;align-items:center;gap:14px;background:#fff;border:1px solid var(--border);border-radius:12px;box-shadow:0 4px 12px rgba(18,70,98,.04)}
.member-profile.selected{background:#f4fbf8;border-color:#b8e2d1}.member-avatar{width:44px;height:44px;display:grid;place-items:center;color:#fff;background:linear-gradient(135deg,var(--brand),var(--accent));border-radius:12px;font-weight:800}.member-profile.selected .member-avatar{background:linear-gradient(135deg,#168f67,#37b98c)}
.member-profile-main{min-width:0}.member-name{display:flex;align-items:baseline;gap:10px}.member-name b{color:var(--title);font-size:15px}.member-name span{color:var(--muted);font-size:11px}.member-profile dl{margin:8px 0 0;display:grid;grid-template-columns:minmax(120px,1fr) minmax(150px,1fr);gap:8px}.member-profile dl div{display:flex;gap:7px}.member-profile dt{color:var(--muted);font-size:12px}.member-profile dd{margin:0;color:var(--text);font-size:12px;font-weight:700}
.member-profile>button{min-height:40px;padding:0 14px;color:var(--brand);background:#fff;border:1px solid #a9c9da;border-radius:8px;font-size:13px;font-weight:700}.member-profile>button:hover{background:var(--brand-soft);border-color:var(--brand)}.member-profile>button:disabled{color:#7c919c;background:#edf3f5;border-color:#d5e1e6;cursor:default}.member-profile>.remove-member{color:var(--error);border-color:#efc4c4}.member-profile>.remove-member:hover{background:#fff1f1;border-color:var(--error)}
.member-empty,.member-searching{margin:0;padding:15px;color:var(--muted);text-align:center;background:#f7fafc;border:1px dashed var(--border);border-radius:10px;font-size:13px}.member-searching{color:var(--brand)}
.selected-members{margin-top:20px;padding-top:18px;border-top:1px solid #e0ebf0}
@media(max-width:680px){.member-profile{grid-template-columns:40px minmax(0,1fr)}.member-avatar{width:40px;height:40px}.member-profile>button{grid-column:1/-1;width:100%}.member-name{align-items:flex-start;flex-direction:column;gap:1px}.member-profile dl{grid-template-columns:1fr}.member-profile dl div{justify-content:space-between}.member-count{align-self:flex-start}}

/* 评审标准四页签 */
.judging-section{background:linear-gradient(180deg,#f8fcfe 0%,#edf6fa 100%)}
.judging-header{margin-bottom:30px}.judging-header>p{max-width:560px}
.criteria-guide{margin-bottom:24px;padding:20px 26px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:22px;background:#fff;border:1px solid var(--border);border-radius:14px;box-shadow:0 6px 18px rgba(24,72,96,.04)}
.criteria-guide>div{display:grid;grid-template-columns:auto 1fr;column-gap:12px;align-items:center}.criteria-guide span{grid-row:1/3;width:50px;height:50px;display:grid;place-items:center;color:#fff;background:linear-gradient(135deg,var(--brand),var(--accent));border-radius:13px;font-weight:800}.criteria-guide b{color:var(--title);font-size:15px}.criteria-guide p{margin:1px 0 0;color:var(--muted);font-size:12px}.criteria-guide>i{color:#8bb6ca;font-style:normal;font-size:24px}
.criteria-tabs{margin-bottom:18px;padding:6px;display:grid;grid-template-columns:repeat(4,1fr);gap:6px;background:#e7f1f5;border:1px solid #d3e2e9;border-radius:14px}.criteria-tab{min-height:58px;padding:8px 16px;display:flex;align-items:center;justify-content:center;gap:8px;color:#526c7a;background:transparent;border:1px solid transparent;border-radius:10px;font:inherit;cursor:pointer;transition:background .16s,color .16s,box-shadow .16s}.criteria-tab span{font-size:13px}.criteria-tab b{font-size:15px}.criteria-tab:hover{color:var(--brand);background:rgba(255,255,255,.65)}.criteria-tab.active{color:#fff;background:linear-gradient(135deg,var(--brand),#1698c5);border-color:transparent;box-shadow:0 7px 16px rgba(8,120,184,.2)}.criteria-tab.creative.active{background:linear-gradient(135deg,#128b99,#20b8b0);box-shadow:0 7px 16px rgba(18,139,153,.2)}.criteria-tab:focus-visible{outline:3px solid rgba(8,120,184,.22);outline-offset:2px}.criteria-grid{display:grid}.criteria-card{overflow:hidden;background:#fff;border:1px solid #cfe0e8;border-radius:var(--radius);box-shadow:0 10px 28px rgba(18,70,98,.06)}
.criteria-card>header{min-height:80px;padding:18px 24px;display:flex;align-items:center;justify-content:space-between;gap:18px;background:linear-gradient(135deg,#e7f4fa,#f7fcfe);border-bottom:1px solid #cfe4ed}.criteria-card.creative>header{background:linear-gradient(135deg,#e8f8f7,#f8fdfd);border-bottom-color:#c9e9e5}
.criteria-card header>div{display:flex;align-items:center;gap:9px}.track-tag,.stage-tag{padding:6px 11px;border-radius:8px;font-size:13px;font-weight:800}.track-tag{color:#fff;background:var(--brand)}.creative .track-tag{background:#1599a8}.stage-tag{color:var(--brand);background:#fff;border:1px solid #b8d6e4}.creative .stage-tag{color:#12828e;border-color:#b9e1dd}
.criteria-card header>strong{color:var(--muted);font-size:12px;font-weight:600}.criteria-card header>strong b{margin-right:3px;color:var(--brand);font-size:28px;line-height:1}.creative header>strong b{color:#1599a8}
.criteria-table-wrap{overflow-x:auto}.criteria-table{width:100%;border-collapse:collapse;table-layout:fixed}.criteria-table th{padding:12px 16px;text-align:left;color:#587280;background:#f7fafc;border-bottom:1px solid var(--border);font-size:12px;font-weight:700}.criteria-table th:nth-child(1),.criteria-table td:nth-child(1){width:68px;text-align:center}.criteria-table th:nth-child(2),.criteria-table td:nth-child(2){width:190px}.criteria-table th:nth-child(3),.criteria-table td:nth-child(3){width:76px;text-align:center}.criteria-table td{padding:17px 16px;color:#526b79;border-bottom:1px solid #e4edf1;font-size:13px;line-height:1.65;vertical-align:middle}.criteria-table tr:last-child td{border-bottom:0}.criteria-table tbody tr{transition:background .15s}.criteria-table tbody tr:hover{background:#f8fcfe}.criteria-table td:first-child{color:#91a6b1;font:700 12px/1.4 Consolas,monospace}.criteria-table td:nth-child(2) b{display:block;color:var(--title);font-size:14px}.criteria-table td:nth-child(3) strong{display:inline-grid;width:42px;height:42px;place-items:center;color:var(--brand);background:var(--brand-soft);border-radius:50%;font-size:16px}.creative .criteria-table td:nth-child(3) strong{color:#128793;background:#e7f7f6}
.criteria-note{margin:20px 0 0;display:flex;align-items:flex-start;gap:9px;color:var(--muted);font-size:12px}.criteria-note span{width:18px;height:18px;display:grid;place-items:center;flex:none;margin-top:1px;color:#fff;background:#8da7b4;border-radius:50%;font:700 11px/1 Georgia,serif}
@media(max-width:680px){.criteria-guide{padding:18px;grid-template-columns:1fr;gap:14px}.criteria-guide>i{display:none}.criteria-tabs{grid-template-columns:1fr 1fr}.criteria-tab{min-height:52px;padding:7px 10px;flex-direction:column;gap:1px}.criteria-tab span{font-size:11px}.criteria-tab b{font-size:14px}.criteria-card>header{min-height:70px;padding:15px 18px}.criteria-card header>strong b{font-size:24px}.criteria-table-wrap{overflow:visible}.criteria-table,.criteria-table tbody{display:block}.criteria-table thead{display:none}.criteria-table tbody{padding:14px}.criteria-table tr{margin-bottom:12px;padding:13px;display:grid;grid-template-columns:32px minmax(0,1fr) 48px;align-items:center;background:#f8fbfc;border:1px solid var(--border);border-radius:11px}.criteria-table tr:last-child{margin-bottom:0}.criteria-table td{width:auto!important;padding:4px!important;border:0;text-align:left!important}.criteria-table td:nth-child(1){grid-column:1;color:#91a6b1}.criteria-table td:nth-child(2){grid-column:2}.criteria-table td:nth-child(3){grid-column:3;text-align:right!important}.criteria-table td:nth-child(3) strong{width:38px;height:38px}.criteria-table td:nth-child(4){grid-column:1/-1;margin-top:8px;padding-top:10px!important;border-top:1px solid #e1ebef;color:#58717e;line-height:1.7}.criteria-note{line-height:1.6}}

/* V3.5：晋级名单与滚动导航 */
.section-slogan{margin:14px 0 0;color:var(--muted);font-size:16px}
.advancement-section{background:#fff}
.advancement-pending{padding:34px 38px;display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:28px;background:linear-gradient(135deg,#f5fbfe,#edf7fa);border:1px solid #cfe2ea;border-radius:var(--radius);box-shadow:0 10px 28px rgba(18,70,98,.06)}
.notice-symbol{width:76px;height:76px;display:grid;place-items:center;color:#fff;background:linear-gradient(135deg,var(--brand),var(--accent));border-radius:20px;box-shadow:0 10px 24px rgba(8,120,184,.2)}
.notice-symbol span{font-size:20px;font-weight:900;letter-spacing:.08em}
.advancement-pending .status-label{color:var(--brand);font-weight:700}.advancement-pending .status-label i{background:#e3a822}
.advancement-pending h3{margin:5px 0 3px;font-size:23px}.advancement-pending p{margin:0;color:var(--muted);font-size:14px}
.notice-steps{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:12px}.notice-steps span{display:grid;justify-items:center;gap:3px}.notice-steps b{width:34px;height:34px;display:grid;place-items:center;color:var(--brand);background:#fff;border:1px solid #bdd9e5;border-radius:50%;font:700 11px/1 Consolas,monospace}.notice-steps i{color:#99b5c1;font-style:normal}
.advancement-list{display:grid;gap:16px}.advancement-card{padding:24px;display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:22px;background:#fff;border:1px solid var(--border);border-left:4px solid var(--brand);border-radius:14px;box-shadow:0 8px 24px rgba(18,70,98,.06)}
.pdf-icon{width:54px;height:62px;display:grid;place-items:center;color:#fff;background:linear-gradient(155deg,#0878b8,#20b8c8);border-radius:8px 8px 12px 8px;font-size:12px;font-weight:900;letter-spacing:.05em}
.advancement-card-main>div{display:flex;align-items:center;gap:10px}.announcement-stage{padding:4px 9px;color:var(--brand);background:var(--brand-soft);border-radius:20px;font-size:11px;font-weight:800}.advancement-card time{color:var(--muted);font-size:12px}.advancement-card h3{margin:7px 0 2px;font-size:20px}.advancement-card p{margin:0;color:var(--muted);font-size:13px}.advancement-card small{display:block;margin-top:5px;color:#8ba0aa;font-size:11px}.advancement-actions{display:flex;gap:8px}.advancement-actions .button{white-space:nowrap}
@media(max-width:1024px){.nav-shell{gap:20px}.primary-nav{gap:14px}.primary-nav a{font-size:12px}.advancement-pending{grid-template-columns:auto 1fr}.notice-steps{grid-column:1/-1;justify-content:center}}
@media(max-width:680px){.advancement-pending{padding:26px 22px;grid-template-columns:1fr;text-align:center}.notice-symbol{margin:auto}.notice-steps{gap:6px}.notice-steps b{width:30px;height:30px}.advancement-card{grid-template-columns:auto 1fr;align-items:start}.advancement-actions{grid-column:1/-1;display:grid;grid-template-columns:1fr 1fr}.advancement-card-main>div{align-items:flex-start;flex-direction:column;gap:5px}}
@media(max-width:420px){.notice-steps i{display:none}.notice-steps{justify-content:space-between}.advancement-actions{grid-template-columns:1fr}}

/* V4.2：揭榜挂帅题目说明表格与决赛原创性声明 */
.challenge-download{margin-top:12px;padding:12px 16px;display:inline-flex;align-items:center;gap:12px;color:var(--title);background:#fbfdfe;border:1px dashed #a9c9da;border-radius:12px;text-decoration:none;transition:.18s}
.challenge-download:hover{border-color:var(--brand);border-style:solid;background:var(--brand-soft)}
.challenge-download-icon{width:38px;height:38px;display:grid;place-items:center;flex:none;color:#fff;background:linear-gradient(135deg,var(--brand),#1fa2a0);border-radius:10px;font-size:17px}
.challenge-download-text b,.challenge-download-text small{display:block}
.challenge-download-text b{color:var(--brand);font-size:13.5px}
.challenge-download-text small{margin-top:2px;color:var(--muted);font-size:11.5px;line-height:1.5}
.pending-text{color:#876108}
.declaration-form{background:#fdf8fb;border-color:#e9d6e3}
.declaration-form>label{color:#8c3e68}
.declaration-row{align-items:stretch}
.declaration-picker{display:flex;align-items:center;gap:12px;min-height:56px;padding:10px 14px;background:#fff;border:1.5px dashed #d8aec6;border-radius:10px;cursor:pointer;transition:.18s}
.declaration-picker:hover{background:#fdf3f9;border-color:#b8789f}
.declaration-picker b{color:var(--title);font-size:13px;white-space:nowrap}
.declaration-file-name{margin:0;color:var(--muted);font-size:12px;overflow-wrap:anywhere}
.work-meta .pending-text{font-weight:700}
@media(max-width:680px){.challenge-download{display:flex}.declaration-picker{flex-direction:column;align-items:flex-start;gap:6px}}