:root{--bg: #f3f6fb;--surface: #ffffff;--surface-soft: #eef5ff;--surface-soft-2: #fbfdff;--text: #1d3155;--muted: #5f7294;--line: #d8e1ee;--brand: #2169d9;--brand-dark: #174fad;--shadow: 0 14px 40px rgba(27, 61, 115, .08);--radius: 22px;--page-bg: linear-gradient(180deg, #f7f9fc 0%, var(--bg) 100%);--header-bg: linear-gradient(90deg, #0b4fb5, #2f7be8);--header-border: rgba(255,255,255,.1);--header-control-bg: rgba(255,255,255,.14);--header-control-border: rgba(255,255,255,.26);--header-text: #ffffff;--hover-bg: #fbfdff;--footer-bg: rgba(255,255,255,.5);--input-bg: #ffffff;--input-text: #1d3155;--input-soft: #f7fbff;--button-muted-bg: #e8eef8;--button-muted-text: #274067}:root[data-theme=dark]{--bg: #0b1220;--surface: #111a2c;--surface-soft: #0f1a30;--surface-soft-2: #14203a;--text: #e6eefb;--muted: #93a7c7;--line: #243552;--brand: #63a4ff;--brand-dark: #8cbcff;--shadow: 0 16px 40px rgba(0, 0, 0, .28);--page-bg: linear-gradient(180deg, #0b1220 0%, #0f1729 100%);--header-bg: linear-gradient(90deg, #0f1b33, #183157);--header-border: rgba(140,188,255,.12);--header-control-bg: rgba(17,26,44,.86);--header-control-border: rgba(140,188,255,.18);--header-text: #eaf2ff;--hover-bg: #16233d;--footer-bg: rgba(10,16,30,.75);--input-bg: #14203a;--input-text: #e6eefb;--input-soft: #16243f;--button-muted-bg: #1b2944;--button-muted-text: #dce8fb}*{box-sizing:border-box}html,body{margin:0;padding:0}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}body{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--page-bg);color:var(--text)}a{color:inherit;text-decoration:none}img{display:block;max-width:100%}.container{width:min(1160px,calc(100% - 32px));margin:0 auto}.site-header{position:sticky;top:0;z-index:20;background:var(--header-bg);border-bottom:1px solid var(--header-border);backdrop-filter:blur(10px)}.nav-row{display:flex;align-items:center;justify-content:space-between;min-height:78px;gap:24px}.brand{color:var(--header-text);font-weight:800;font-size:2rem;display:inline-flex;align-items:center;gap:12px;letter-spacing:-.03em}.brand-mark{font-size:2rem}.nav-links{display:flex;gap:28px;flex-wrap:wrap;color:color-mix(in srgb,var(--header-text) 92%,transparent);font-weight:600}.nav-links a{opacity:.96}.nav-links a:hover{opacity:1}.header-controls{display:flex;align-items:center;gap:12px}.theme-toggle{display:inline-flex;align-items:center;gap:8px;min-height:42px;padding:0 12px;border:1px solid var(--header-control-border);border-radius:12px;background:var(--header-control-bg);color:var(--header-text);cursor:pointer;font:inherit}.theme-toggle-icon{font-size:.82rem;line-height:1}.theme-toggle-sun{display:inline}.theme-toggle-moon{display:none}:root[data-theme=dark] .theme-toggle-sun{display:none}:root[data-theme=dark] .theme-toggle-moon{display:inline}.locale-switcher select{min-height:42px;padding:0 12px;border:1px solid var(--header-control-border);border-radius:12px;background:var(--header-control-bg);color:var(--header-text);font:inherit}.locale-switcher option{color:var(--text)}.hero-section{position:relative;z-index:5;padding:56px 0 22px;text-align:center}.eyebrow{margin:0;font-size:1rem;font-weight:700;color:var(--brand);text-transform:uppercase;letter-spacing:.08em}.hero-section h1{margin:12px 0 10px;font-size:clamp(3rem,7vw,5.25rem);line-height:.95;letter-spacing:-.05em}.hero-text{margin:0 0 26px;font-size:1.55rem;color:var(--muted)}.search-box{position:relative;z-index:40;width:min(760px,100%);margin:0 auto}.search-input-row{display:grid;grid-template-columns:1fr 164px;background:var(--surface);border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:var(--shadow)}.search-input-row input{border:0;outline:none;min-height:74px;padding:0 26px;font-size:1.35rem;color:var(--text);background:transparent}.search-input-row button{border:0;cursor:pointer;font-size:1.7rem;font-weight:800;color:#fff;background:linear-gradient(180deg,#2c7ef3,#1f66d5)}.search-results{position:absolute;left:0;right:0;top:calc(100% + 10px);z-index:45;background:var(--surface);border:1px solid var(--line);border-radius:18px;overflow:hidden;box-shadow:var(--shadow)}.search-result-item,.search-empty{display:flex;justify-content:space-between;gap:16px;padding:14px 18px;border-bottom:1px solid var(--line);color:var(--muted)}.search-result-item:last-child,.search-empty:last-child{border-bottom:0}.search-result-item strong{display:inline-flex;align-items:center;gap:10px;color:var(--text)}.search-result-item:hover{background:var(--hover-bg)}.search-empty{justify-content:center}.search-flag,.city-flag{display:inline-flex;align-items:center;justify-content:center;min-width:1.2em}.home-hero{padding:40px 0 20px}.home-hero-copy{max-width:840px;margin:0 auto 16px;text-align:center}.home-hero-copy h1{margin:8px 0;font-size:clamp(2.2rem,5vw,3.6rem);line-height:.98;letter-spacing:-.05em}.home-hero .eyebrow{font-size:.82rem}.home-hero .hero-text{margin:0 auto;max-width:460px;font-size:1rem;line-height:1.45}.featured-cities{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px;margin-top:16px;content-visibility:auto;contain-intrinsic-size:180px}.featured-city-chip{display:grid;gap:6px;padding:14px 16px;border:1px solid var(--line);border-radius:16px;background:var(--surface)}.featured-city-chip span{display:inline-flex;align-items:center;gap:8px;font-size:.95rem;font-weight:700;color:var(--muted)}.featured-city-chip strong{font-size:1.35rem;letter-spacing:-.04em;color:var(--text)}.world-sections{padding:14px 0 48px;content-visibility:auto;contain-intrinsic-size:1100px}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:18px}.section-heading h2{margin:0;font-size:clamp(2rem,4vw,3rem);letter-spacing:-.04em}.section-heading p{margin:0;max-width:560px;color:var(--muted);line-height:1.6}.region-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.region-card{border:1px solid var(--line);border-radius:20px;background:var(--surface);overflow:hidden}.region-card-header{padding:18px 18px 14px;border-bottom:1px solid var(--line);background:var(--surface-soft-2)}.region-card-header h3{margin:0 0 6px;font-size:1.5rem;letter-spacing:-.03em}.region-card-header p{margin:0;color:var(--muted);line-height:1.5}.region-city-list{display:grid}.region-city{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px 18px;border-top:1px solid var(--line)}.region-city:first-child{border-top:0}.region-city:hover{background:var(--hover-bg)}.region-city strong{display:inline-flex;align-items:center;gap:8px;font-size:1.05rem}.region-city span{color:var(--muted);font-size:.95rem}.region-time{text-align:right;flex-shrink:0}.region-time strong{font-size:1.35rem;letter-spacing:-.04em}.region-time span{font-size:.85rem;font-weight:700;color:var(--brand)}.map-section{position:relative;z-index:1;padding:6px 0 0}.map-frame{position:relative;width:min(1180px,calc(100% - 24px));margin:0 auto;padding:22px 0 0;border-top-left-radius:44px;border-top-right-radius:44px;overflow:hidden;background:radial-gradient(circle at 50% 0%,#fffffff2,#fff0 42%),linear-gradient(180deg,#eff7ff,#d8eaf9 48%,#e8f2fb);box-shadow:inset 0 40px 90px #ffffff80}.map-image{width:100%;opacity:1;filter:saturate(.96) contrast(1.04)}.map-bubble{position:absolute;transform:translate(-50%,-50%);background:#fffffff0;border:1px solid rgba(168,185,216,.75);border-radius:18px;padding:14px 18px 13px;min-width:160px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:4px}.map-bubble:after{content:"";position:absolute;left:50%;bottom:-11px;width:18px;height:18px;transform:translate(-50%) rotate(45deg);background:#fffffff0;border-right:1px solid rgba(168,185,216,.75);border-bottom:1px solid rgba(168,185,216,.75)}.bubble-city{position:relative;z-index:1;font-size:1.05rem;font-weight:700;color:#2a4573}.bubble-time{position:relative;z-index:1;font-size:1.25rem;letter-spacing:-.03em;color:var(--text);line-height:1.1}.tool-strip{padding:0 0 38px}.tool-tab-row{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:-2px;background:#ffffff9e;border:1px solid var(--line);border-top:0;border-bottom-left-radius:18px;border-bottom-right-radius:18px}.tool-tab-row span{padding:24px 12px;text-align:center;font-weight:700;font-size:1.55rem;border-right:1px solid var(--line)}.tool-tab-row span:last-child{border-right:0}.tool-card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:30px}.tool-card{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:20px;box-shadow:var(--shadow);text-align:center}.tool-card h2{margin:4px 0 12px;font-size:2.25rem;letter-spacing:-.03em}.tool-card p{margin:12px 0 18px;color:var(--muted);font-size:1.2rem}.tool-visual{min-height:180px;border-radius:14px;border:1px solid #dce6f4;background:linear-gradient(180deg,#fff,#f7fbff);display:grid;place-items:center;padding:14px}.clock-visual{font-size:clamp(2.6rem,5vw,4.3rem);font-weight:800;background:linear-gradient(180deg,#243448,#0f1724);color:#fff}.clock-visual span{font-size:.38em;margin-left:6px}.dual-visual{display:grid;grid-template-columns:1fr 1fr;gap:12px}.dual-visual div{border:1px solid #dce6f4;border-radius:12px;padding:16px 10px;background:#fff}.dual-visual strong{display:block;color:#425678;margin-bottom:8px}.dual-visual span{font-size:2rem;font-weight:800}.diff-visual{gap:10px}.diff-visual strong{font-size:1.5rem;color:#425678}.diff-visual span{font-size:2.2rem;font-weight:800}.tool-button{display:inline-flex;justify-content:center;align-items:center;min-width:138px;min-height:50px;border-radius:12px;background:linear-gradient(180deg,#2a7df2,#1f66d5);color:#fff;font-weight:800;font-size:1.35rem}.tool-button-muted{background:var(--button-muted-bg);color:var(--button-muted-text)}.site-footer{border-top:1px solid var(--line);margin-top:42px;background:var(--footer-bg)}.footer-row{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:18px;color:var(--muted)}.footer-links{display:flex;gap:20px}.content-page{padding:44px 0 52px}.content-page h1{margin:0 0 10px;font-size:clamp(2.4rem,5vw,4rem);letter-spacing:-.04em}.content-page h2{margin:0 0 14px;font-size:1.75rem}.lead{font-size:1.18rem;color:var(--muted);margin:0 0 24px}.alphabet-nav,.city-link-grid,.tool-link-grid{display:flex;flex-wrap:wrap;gap:12px}.alphabet-nav a,.city-link-grid a,.tool-link-grid a{background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:11px 16px;box-shadow:0 8px 22px #112a4f0d}.city-group{margin-top:28px}.breadcrumbs{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:12px;color:var(--muted)}.city-clock-card{display:grid;gap:6px;place-items:center;padding:30px 20px;background:var(--surface);border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow);margin-bottom:22px}.live-time{font-size:clamp(2.5rem,8vw,5rem);letter-spacing:-.05em}.live-date{color:var(--muted);font-size:1.15rem}.meta-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:22px}.meta-grid>div{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:0 8px 22px #112a4f0d}.meta-grid span{display:block;color:var(--muted);margin-bottom:8px}.meta-grid strong{font-size:1.05rem}.faq-block{margin-top:30px}.faq-item{background:#ffffffb8;border:1px solid var(--line);border-radius:18px;padding:18px 20px;margin-bottom:12px}.faq-item h3{margin:0 0 8px}.faq-item p{margin:0;color:var(--muted)}.desk-clock-page{min-height:calc(100vh - 160px);display:grid;place-items:center;text-align:center;gap:12px;background:radial-gradient(circle at top,#1f355f,#0b1120 70%);color:#fff;padding:32px}.desk-clock-page p{font-size:1.45rem;margin:0;color:#ffffffbf}.desk-clock-time{font-size:clamp(4rem,14vw,9rem);letter-spacing:-.06em}.desk-clock-date{font-size:1.2rem;color:#ffffffc7}.dual-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.dual-card,.diff-summary{background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:24px;box-shadow:var(--shadow)}.dual-card span,.diff-summary strong{display:block;color:var(--muted);margin-bottom:10px}.dual-card strong{font-size:2.6rem}.diff-summary span{font-size:1.6rem;font-weight:700}.article-page{max-width:760px}@media(max-width:980px){.nav-row,.footer-row{flex-direction:column;justify-content:center;padding:16px 0}.nav-links{justify-content:center}.tool-card-grid,.meta-grid,.dual-grid{grid-template-columns:1fr}.tool-tab-row{grid-template-columns:repeat(2,1fr)}}@media(max-width:720px){.brand{font-size:1.6rem}.nav-links{gap:14px 18px;font-size:.96rem}.locale-switcher,.locale-switcher select{width:100%}.hero-section{padding-top:36px}.hero-section h1{font-size:2.9rem}.hero-text{font-size:1.15rem}.search-input-row{grid-template-columns:1fr}.search-input-row button{min-height:58px;font-size:1.25rem}.search-input-row input{min-height:62px;font-size:1.05rem}.map-frame{border-top-left-radius:28px;border-top-right-radius:28px}.map-bubble{min-width:126px;padding:10px 12px}.bubble-city{font-size:.86rem}.bubble-time{font-size:1.35rem}.tool-tab-row span{font-size:1rem;padding:16px 8px}.tool-card h2{font-size:1.8rem}.tool-card p{font-size:1rem}.dual-visual span,.diff-visual span{font-size:1.6rem}}.prose-page{max-width:840px}.prose-page p{color:var(--muted);line-height:1.75}.article-section{margin-top:26px}.article-cta{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:18px 20px;border:1px solid var(--line);border-radius:20px;background:#ffffffc7;box-shadow:0 10px 30px #112a4f0f;margin:22px 0 28px}.article-cta span{display:block;color:var(--muted);font-size:.95rem}.article-cta strong{font-size:1.15rem}.article-page p{color:var(--muted);line-height:1.8}.blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.blog-card{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:0 8px 22px #112a4f0d}.blog-card h2,.blog-card h3{margin:10px 0;font-size:1.3rem}.blog-card p{color:var(--muted);margin:0 0 12px}.blog-chip{display:inline-flex;font-size:.82rem;font-weight:700;color:var(--brand);background:#eef5ff;border-radius:999px;padding:7px 10px}.blog-read{font-weight:700;color:var(--brand-dark)}.related-small{grid-template-columns:repeat(3,1fr)}.tool-page{max-width:980px}.tool-hero{margin-bottom:22px}.tool-form-card{background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:22px;box-shadow:0 10px 30px #112a4f0f}.tool-form-card label{display:block;font-weight:700;margin-bottom:10px}.tool-form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.tool-form-stack{display:grid;gap:18px}.tool-action-row{display:flex;justify-content:flex-end}.tool-select-row{display:grid;grid-template-columns:1fr 180px;gap:14px}.tool-form-card select,.tool-form-card input[type=time],.tool-form-card input[type=text]{width:100%;min-height:56px;padding:0 16px;border:1px solid var(--line);border-radius:14px;font:inherit;background:var(--input-bg);color:var(--input-text)}.tool-form-card select option{color:var(--input-text);background:var(--input-bg)}.tool-preview-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:20px}.mini-city-card{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:16px 18px;box-shadow:0 8px 22px #112a4f0d;display:grid;gap:4px}.mini-city-card span{color:var(--muted)}.mini-city-card strong{font-size:1.5rem;letter-spacing:-.03em}.mini-city-card em{font-style:normal;color:var(--brand-dark);font-weight:700}.dual-enhanced .dual-card{min-height:180px}.dual-label{font-size:1.15rem;font-weight:700;color:var(--text)!important}.dual-time{display:block;font-size:clamp(2rem,5.2vw,3rem)!important;letter-spacing:-.05em;margin:12px 0 8px!important}.dual-date{color:var(--muted);font-size:1rem}.dual-summary{margin-top:18px;font-size:1.15rem}.convert-output{min-height:56px;border:1px solid var(--line);border-radius:14px;padding:16px;background:var(--input-soft);color:var(--text);display:flex;align-items:center;font-weight:700;line-height:1.5}.compact-links{margin-top:18px}.alarm-action-row{gap:12px}.alarm-status-card strong{font-size:1.9rem}@media(max-width:980px){.featured-cities,.region-grid{grid-template-columns:1fr 1fr}.section-heading{align-items:flex-start;flex-direction:column}.blog-grid,.related-small,.tool-preview-grid,.tool-form-grid,.tool-select-row{grid-template-columns:1fr}.tool-action-row{justify-content:stretch}.tool-action-row .tool-button,.tool-select-row .tool-button{width:100%}.article-cta{flex-direction:column;align-items:flex-start}}@media(max-width:720px){.home-hero{padding-top:28px}.home-hero-copy h1{font-size:2.25rem}.featured-cities,.region-grid{grid-template-columns:1fr}.region-card-header,.region-city{padding-left:16px;padding-right:16px}.region-city{gap:12px}.region-city strong{font-size:1rem}.region-time strong{font-size:1.2rem}.blog-grid{grid-template-columns:1fr}}