/* 千葉市Infotech｜共通スタイル
配色は :root、本文は index.html、404案内は 404.html を編集。
外部読み込みなし。画像・JavaScript・ビルドは不要です。 */
:root{--ink:#163f37;--text:#263e37;--muted:#5b6860;--paper:#f7f6ef;--white:#fffefa;--line:#d5dcd2;--accent:#ecab64;--soft:#e9eee6;--radius:8px;--width:1120px}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:32px}body{margin:0;background:var(--paper);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;font-size:16px;line-height:1.9;overflow-wrap:anywhere}a{color:inherit;text-underline-offset:.25em}button,a{-webkit-tap-highlight-color:transparent}a:focus-visible,summary:focus-visible{outline:3px solid #b35413;outline-offset:6px}::selection{background:var(--accent);color:var(--ink)}h1,h2,h3,p{margin:0}h1,h2,h3{line-height:1.5}h2{font-size:clamp(26px,3vw,36px);font-weight:700;letter-spacing:.02em}h3{font-size:19px}p+p{margin-top:1em}.wrap{width:min(var(--width),calc(100% - 80px));margin-inline:auto}.eyebrow{font-size:12px;font-weight:700;letter-spacing:.15em;line-height:1.6;margin-bottom:22px;color:var(--ink)}.skip-link{position:absolute;top:10px;left:20px;padding:10px 20px;background:var(--white);z-index:5;transform:translateY(-160%)}.skip-link:focus{transform:translateY(0)}.site-header{border-bottom:1px solid var(--line)}.header-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;min-height:100px}.brand{display:inline-flex;align-items:center;gap:12px;font-size:20px;font-weight:750;white-space:nowrap;text-decoration:none;letter-spacing:.01em}.brand-en{margin-left:4px}.brand-mark{background:var(--ink);color:var(--paper);width:38px;height:38px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-family:Georgia,serif;font-size:28px;font-style:italic;line-height:1}.brand-mark span{font-family:sans-serif;font-size:15px;font-style:normal;align-self:flex-start;margin-top:7px}nav{display:flex;align-items:center;gap:28px;font-size:13px;font-weight:700}nav a{text-decoration:none;padding-block:10px}nav a:hover{text-decoration:underline}.nav-contact{border:1px solid var(--ink);padding:9px 19px;border-radius:4px;display:flex;gap:22px}.hero{padding-block:76px 80px;display:grid;grid-template-columns:1.25fr 1fr;gap:70px;align-items:center}.dot{display:inline-block;width:8px;height:8px;background:#ad5b24;border-radius:50%;margin-right:8px}.hero h1{font-family:"Yu Mincho","Hiragino Mincho ProN",serif;font-size:clamp(36px,4.45vw,56px);font-weight:600;line-height:1.5;letter-spacing:.025em;color:var(--ink)}.hero h1 span{border-bottom:3px solid var(--accent);padding-bottom:5px}.hero-lead{margin-top:28px;font-size:15px;line-height:2.1}.button{display:inline-flex;gap:36px;align-items:center;justify-content:space-between;background:var(--ink);color:var(--white);padding:16px 26px;border:1px solid var(--ink);border-radius:4px;text-decoration:none;font-size:15px;font-weight:700;min-height:56px;transition:background .2s}.button:hover{background:#28574b}.hero .button{margin-top:30px}.button span{font-size:22px;line-height:1}.hero-note{font-size:12px;color:var(--muted);margin-top:13px}.hero-board{background:var(--soft);border:1px solid #d4ddcf;border-radius:80px 8px 8px 8px;padding:32px 34px 0;position:relative}.board-top{display:flex;align-items:center;justify-content:space-between;gap:12px}.board-top .eyebrow{margin-bottom:0;font-size:10px;letter-spacing:.12em}.board-symbol{font-size:34px;line-height:1.3;color:#a05220}.board-heading{font-size:26px;font-weight:700;line-height:1.6;margin-top:20px}.need-list{list-style:none;margin:22px 0 0;padding:0}.need-list li{display:flex;align-items:center;gap:24px;border-top:1px solid #c7d2c4;padding:17px 0;font-size:13px;line-height:1.7}.need-number{font-family:Georgia,serif;font-size:29px;color:#506d5b}.need-list strong{font-size:18px;font-weight:650}.board-footer{border-top:1px solid #c7d2c4;padding:18px 0;display:flex;justify-content:space-between;gap:10px;font-size:11px}.board-footer 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var(--line);background:var(--white)}.service-no{font-family:Georgia,serif;font-size:19px;display:block;color:#607264;margin-bottom:14px}.service h3{margin-bottom:13px}.service>p,.service-wide>div>p{font-size:14px;color:var(--muted)}.service .service-tag{font-size:11px;color:var(--ink);margin-top:22px;font-weight:650}.service-wide{grid-column:1/-1;display:grid;grid-template-columns:1fr 1.25fr;gap:30px;background:var(--soft)}.service-wide h3{margin-bottom:0}.section-note{margin-top:22px;font-size:13px;color:var(--muted)}.price-section{background:#edf0e8;padding-block:80px}.price-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px}.price-intro{font-size:14px;margin-top:26px}.pill{display:inline-block;border:1px solid #aab9a6;padding:5px 16px;margin-top:24px;font-size:12px;border-radius:30px;font-weight:700}.price-panel{background:var(--white);padding:24px 30px;border-radius:var(--radius)}table{width:100%;border-collapse:collapse;font-size:14px;text-align:left}caption{text-align:left;font-size:18px;font-weight:700;padding-bottom:18px}th,td{padding:14px 0;border-bottom:1px solid var(--line)}thead th{font-size:11px;font-weight:500;color:var(--muted);padding-top:0}tbody th{font-weight:500;padding-right:16px}td,thead th:last-child{text-align:right;white-space:nowrap}td{font-weight:700}.price-notes{margin-top:24px}.price-notes h3{font-size:13px}.price-notes p{font-size:12px;color:var(--muted);margin-top:8px}.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:24px;list-style:none;margin:0;padding:0}.steps li{border-top:2px solid var(--ink);padding-top:16px}.step-no{display:block;font-family:Georgia,serif;font-size:29px;color:#657561;margin-bottom:22px}.steps h3{font-size:16px;margin-bottom:12px}.steps p{font-size:13px;color:var(--muted)}.about-section{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding-block:70px}.about-layout{display:grid;grid-template-columns:1fr 1.1fr;gap:80px}.about-layout h2{font-size:27px}.about-copy p{font-size:14px;color:var(--muted)}.about-copy .about-lead{font-size:28px;font-family:"Yu Mincho","Hiragino Mincho ProN",serif;color:var(--ink);line-height:1.7;margin-bottom:24px}.contact-box{border-radius:var(--radius);background:var(--ink);color:var(--white);padding:48px;display:grid;grid-template-columns:1.1fr 1fr;gap:40px;align-items:center}.contact-box .eyebrow{color:#dcdfcd}.contact-box h2{font-size:30px;margin-bottom:24px}.contact-box p{font-size:14px}.contact-box .contact-small{font-size:12px;margin-top:20px;line-height:1.9}.contact-card{background:var(--white);color:var(--ink);border-radius:6px;padding:26px}.draft-label{display:inline-block;background:#f6e4c9;color:#70401c;padding:4px 10px;font-size:11px;font-weight:700;border-radius:3px}.contact-card .email-caption{font-size:12px;margin-top:19px}.email-address{display:block;font-size:16px!important;font-weight:700;margin-top:6px!important;word-break:break-all;line-height:1.7}.contact-card .placeholder-note{font-size:12px;padding-top:16px;border-top:1px solid var(--line);margin-top:18px;color:#70401c}.contact-card .contact-small{color:var(--muted);font-size:11px}.privacy-section{padding-bottom:85px}.privacy-section .eyebrow{margin-bottom:10px}.privacy-section h2{font-size:24px}.privacy-intro{font-size:13px;margin-top:20px;max-width:820px;color:var(--muted)}.policy-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px 48px;margin-top:30px}.policy-grid h3{font-size:14px;margin-bottom:8px}.policy-grid p{font-size:12px;color:var(--muted)}.site-footer{border-top:1px solid var(--line);padding-block:32px}.footer-inner{display:flex;flex-wrap:wrap;align-items:center;gap:14px 28px}.footer-brand{font-size:17px;gap:0}.footer-inner p,.footer-inner>a:not(.brand),.footer-inner small{font-size:11px;color:var(--muted)}.footer-inner small{margin-left:auto}.error-page{min-height:100vh;display:flex;flex-direction:column}.error-main{flex:1;display:grid;place-items:center;padding-block:75px}.error-content{max-width:640px;text-align:center}.error-number{font-family:Georgia,serif;font-size:clamp(100px,20vw,170px);color:var(--ink);line-height:1}.error-content h1{font-size:clamp(24px,4vw,32px);margin-top:28px}.error-content>p:not(.error-number){margin-top:20px;color:var(--muted);font-size:15px}.error-content .button{margin-top:32px}.error-links{display:flex;justify-content:center;gap:30px;margin-top:22px;font-size:13px}
@media(min-width:1440px){.hero h1{font-size:58px}}
@media(max-width:1000px){.wrap{width:calc(100% - 48px)}.hero{gap:35px;padding-block:55px}.hero h1{font-size:42px}.hero-board{padding-inline:25px}.header-inner{gap:20px}nav{gap:18px}.price-layout{gap:36px}.steps{gap:16px}.steps h3{font-size:14px}.about-layout{gap:35px}.contact-box{padding:32px;gap:26px}.contact-box h2{font-size:26px}.desktop-break{display:none}}
@media(max-width:760px){.wrap{width:calc(100% - 36px)}.header-inner{min-height:0;padding-block:18px;flex-direction:column;align-items:flex-start;gap:16px}.brand{font-size:20px}nav{width:100%;justify-content:space-between;gap:8px;font-size:11px}.nav-contact{padding:7px 12px;gap:12px}.hero{grid-template-columns:1fr;gap:35px;padding-block:42px}.hero h1{font-size:clamp(34px,8.3vw,49px)}.hero-lead{font-size:14px;margin-top:24px}.hero .button{width:100%;max-width:370px}.hero-note{font-size:11px}.hero-board{padding:26px 27px 0;border-top-left-radius:55px}.board-heading{font-size:24px}.need-list li{padding-block:14px}.board-top .eyebrow{font-size:11px}.facts{padding-block:21px}.facts dt{font-size:10px}.facts dd{font-size:12px}.facts div{padding-inline:5px;justify-content:center;text-align:center}.section{padding-block:56px}.section-heading{display:block;margin-bottom:26px}.section-heading>p{margin-top:18px;font-size:13px}.service-grid{grid-template-columns:1fr}.service{padding:26px}.service h3{font-size:18px}.service-wide{display:block}.service-wide>div+div{margin-top:13px}.service-no{margin-bottom:10px}.section-note{font-size:12px}.price-section{padding-block:50px}.price-layout{grid-template-columns:1fr;gap:30px}.price-layout h2 br{display:none}.price-intro{margin-top:18px}.price-panel{padding:24px 20px}table{font-size:13px}.steps{grid-template-columns:1fr;gap:0}.steps li{position:relative;padding:22px 0 22px 57px;border-top:1px solid var(--line)}.steps li:first-child{border-top:2px solid var(--ink)}.step-no{position:absolute;left:0;top:19px;font-size:26px}.steps h3{font-size:17px;margin-bottom:6px}.steps p{font-size:13px}.about-section{padding-block:50px}.about-layout{grid-template-columns:1fr;gap:26px}.about-layout h2{font-size:25px}.about-copy .about-lead{font-size:25px}.contact-box{grid-template-columns:1fr;padding:28px 20px;gap:26px}.contact-box h2{font-size:26px}.contact-card{padding:22px 18px}.privacy-section{padding-bottom:50px}.policy-grid{grid-template-columns:1fr;gap:24px}.privacy-section h2{font-size:23px}.footer-inner{flex-direction:column;align-items:flex-start;gap:10px}.footer-inner small{margin-left:0}.error-main{padding-block:50px}.error-content>p:not(.error-number){font-size:14px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important}}
@media print{body{background:#fff;color:#000;font-size:11pt}.wrap{width:100%}nav,.skip-link,.hero-board,.button{display:none}.hero,.price-layout,.about-layout,.contact-box{display:block}.section,.hero,.price-section,.about-section{padding-block:20px}.facts-band,.contact-box{background:#fff;color:#000;border:1px solid #aaa}.contact-box .eyebrow{color:#000}.facts dt{color:#333}.service,.steps li,.policy-grid section{break-inside:avoid}.contact-card{margin-top:20px}.site-footer{margin-top:20px}a{color:#000;text-decoration:underline}}