/*
Theme Name: InfraStepLab
Theme URI: https://infrasteplab.com/
Author: InfraStepLab編集部
Description: 新人ネットワークエンジニア向け実務メディア「InfraStepLab」専用ブロックテーマ。
Version: 1.1.0
Requires at least: 6.6
Requires PHP: 8.0
Text Domain: infrasteplab
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
*/

:root{
  --isl-navy-950:#071a2a;
  --isl-navy-900:#0c263d;
  --isl-navy-800:#163b59;
  --isl-blue-650:#1767c7;
  --isl-blue-500:#3184e4;
  --isl-cyan-500:#24b8c7;
  --isl-cyan-100:#e3f8fa;
  --isl-mint:#e9f7f0;
  --isl-warm:#fff6dc;
  --isl-warm-2:#fffaf0;
  --isl-paper:#fbfaf7;
  --isl-white:#ffffff;
  --isl-ink:#172b3c;
  --isl-muted:#657684;
  --isl-line:#dbe5e9;
  --isl-soft:#f4f8f9;
  --isl-success:#17835b;
  --isl-orange:#d97706;
  --isl-radius:18px;
  --isl-radius-lg:30px;
  --isl-shadow:0 16px 44px rgba(18,45,64,.08);
  --isl-shadow-sm:0 8px 25px rgba(18,45,64,.065);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{overflow-wrap:anywhere;background:var(--isl-paper);color:var(--isl-ink)}
a{text-underline-offset:.18em}
img{max-width:100%;height:auto}
:focus-visible{outline:3px solid var(--isl-cyan-500);outline-offset:3px}
.wp-site-blocks{min-height:100vh;background:var(--isl-paper)}
.isl-shell{width:min(1180px,calc(100% - 40px));margin-inline:auto}
.isl-skip-link{position:absolute;left:12px;top:-100px;z-index:9999;padding:10px 14px;background:#fff;color:var(--isl-navy-900);border-radius:8px;box-shadow:var(--isl-shadow-sm)}
.isl-skip-link:focus{top:12px}

/* Header */
.isl-header{position:sticky;top:0;z-index:50;background:rgba(251,250,247,.96);border-bottom:1px solid rgba(219,229,233,.95);backdrop-filter:blur(12px)}
.admin-bar .isl-header{top:32px}
.isl-header-inner{min-height:72px}
.isl-brand{gap:10px!important}
.isl-brand-mark{display:grid;place-items:center;width:38px;height:38px;margin:0!important;border-radius:12px;background:var(--isl-navy-900);color:#fff;font-weight:900;font-size:.7rem;letter-spacing:.08em;box-shadow:4px 4px 0 var(--isl-cyan-500)}
.isl-header .wp-block-site-title{margin:0;font-size:1.24rem;font-weight:900;letter-spacing:-.025em}
.isl-header .wp-block-site-title a{color:var(--isl-navy-900);text-decoration:none}
.isl-header .wp-block-navigation{font-size:.9rem;font-weight:750}
.isl-header .wp-block-navigation-item__content{text-decoration:none}
.isl-header .wp-block-navigation-item__content:hover{color:var(--isl-blue-650)}

/* Hero: human, beginner-first */
.isl-hero{position:relative;overflow:hidden;background:linear-gradient(180deg,#fffdf7 0%,#f7fbfc 100%);border-bottom:1px solid var(--isl-line)}
.isl-hero:before{content:"";position:absolute;left:-100px;top:-120px;width:320px;height:320px;border-radius:50%;background:rgba(36,184,199,.08)}
.isl-hero:after{content:"";position:absolute;right:-100px;bottom:-160px;width:420px;height:420px;border-radius:50%;background:rgba(255,214,102,.13)}
.isl-hero-grid{position:relative;z-index:1;display:grid!important;grid-template-columns:minmax(0,1.18fr) minmax(320px,.82fr);gap:clamp(34px,6vw,78px);align-items:center;min-height:620px;padding-top:clamp(72px,8vw,108px);padding-bottom:clamp(72px,8vw,108px)}
.isl-kicker{display:inline-block;margin:0 0 14px!important;font-size:.76rem;font-weight:900;letter-spacing:.12em;text-transform:uppercase;color:var(--isl-blue-650)}
.isl-hero h1{max-width:820px;margin:0 0 22px;font-size:clamp(2.25rem,4.7vw,4.3rem);line-height:1.12;letter-spacing:-.045em;color:var(--isl-navy-950)}
.isl-hero .isl-lead{max-width:760px;margin:0 0 28px;color:#4b6273;font-size:clamp(1.04rem,1.45vw,1.19rem);line-height:1.9}
.isl-hero .wp-block-button__link,.isl-cta .wp-block-button__link{border-radius:999px;font-weight:850;padding:14px 24px}
.isl-hero .is-style-outline .wp-block-button__link{color:var(--isl-navy-900);border-color:#9fb4c3;background:rgba(255,255,255,.55)}
.isl-proof{margin-top:26px!important;color:var(--isl-muted);font-size:.86rem}
.isl-note-card{position:relative;padding:30px;border:1px solid #d9e4e8;border-radius:26px;background:#fff;box-shadow:var(--isl-shadow);transform:rotate(1.2deg)}
.isl-note-card:before{content:"新人のころのメモ";position:absolute;left:24px;top:-15px;padding:7px 13px;border-radius:999px;background:var(--isl-warm);color:#76550c;font-size:.74rem;font-weight:900;letter-spacing:.03em;transform:rotate(-2deg)}
.isl-note-card h2{margin:8px 0 16px;font-size:1.38rem;color:var(--isl-navy-900)}
.isl-note-list{list-style:none;padding:0;margin:0}
.isl-note-list li{position:relative;margin:12px 0;padding:12px 14px 12px 40px;border-radius:12px;background:var(--isl-soft);color:#486070;font-weight:650}
.isl-note-list li:before{content:"?";position:absolute;left:13px;top:11px;width:20px;height:20px;display:grid;place-items:center;border-radius:50%;background:#fff;color:var(--isl-blue-650);font-weight:900}
.isl-note-answer{margin-top:18px!important;padding-top:18px;border-top:1px dashed #cbd9df;color:var(--isl-navy-900);font-weight:850;line-height:1.75}

/* Sections */
.isl-section{padding-top:clamp(64px,7.5vw,100px);padding-bottom:clamp(64px,7.5vw,100px)}
.isl-soft{background:var(--isl-soft)}
.isl-white{background:#fff}
.isl-warm{background:var(--isl-warm-2)}
.isl-section-title{max-width:800px;margin-bottom:38px}
.isl-section-title h2{margin:5px 0 12px;font-size:clamp(1.85rem,3.05vw,2.7rem);letter-spacing:-.035em;line-height:1.35}
.isl-section-title p{color:var(--isl-muted);line-height:1.9}

/* Story */
.isl-story-wrap{display:grid!important;grid-template-columns:minmax(260px,.72fr) minmax(0,1.28fr);gap:clamp(28px,5vw,68px);align-items:start}
.isl-story-card{position:sticky;top:110px;padding:28px;border-radius:24px;background:var(--isl-navy-900);color:#fff;box-shadow:var(--isl-shadow)}
.isl-story-card .isl-kicker{color:#8ce5eb}
.isl-story-card h3{margin:0 0 12px;color:#fff;font-size:1.5rem}
.isl-story-card p{color:rgba(255,255,255,.8);line-height:1.85}
.isl-story-timeline{margin-top:22px;padding-top:20px;border-top:1px solid rgba(255,255,255,.18)}
.isl-story-timeline p{margin:8px 0!important;font-size:.9rem}
.isl-story-main{padding:6px 0}
.isl-story-main .isl-big-quote{margin:0 0 24px;font-size:clamp(1.55rem,2.7vw,2.25rem);line-height:1.55;font-weight:900;color:var(--isl-navy-950);letter-spacing:-.025em}
.isl-story-main p{font-size:1.02rem;line-height:2;color:#445c6d}
.isl-story-main strong{color:var(--isl-navy-900)}
.isl-story-skills{display:flex;flex-wrap:wrap;gap:9px;margin-top:24px}
.isl-story-skill{margin:0!important;padding:7px 11px;border:1px solid #d7e5e9;border-radius:999px;background:#fff;color:#486070;font-size:.8rem;font-weight:750}

/* Beginner route */
.isl-route-grid{display:grid!important;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.isl-route-card{height:100%;padding:24px;border:1px solid var(--isl-line);border-radius:20px;background:#fff;box-shadow:var(--isl-shadow-sm);transition:transform .18s ease,box-shadow .18s ease}
.isl-route-card:hover{transform:translateY(-3px);box-shadow:var(--isl-shadow)}
.isl-route-num{display:inline-grid;place-items:center;width:34px;height:34px;margin:0 0 14px!important;border-radius:10px;background:var(--isl-cyan-100);color:var(--isl-navy-900);font-weight:900;font-size:.8rem}
.isl-route-card h3{margin:0 0 8px;font-size:1.12rem}
.isl-route-card p{margin:0;color:var(--isl-muted);font-size:.92rem;line-height:1.75}

/* Topic cards */
.isl-topic-grid{display:grid!important;grid-template-columns:repeat(5,minmax(0,1fr));gap:16px}
.isl-topic-card{height:100%;padding:22px;border:1px solid var(--isl-line);border-radius:18px;background:#fff}
.isl-topic-tag{margin:0 0 11px!important;font-size:.7rem;font-weight:900;letter-spacing:.08em;color:var(--isl-blue-650)}
.isl-topic-card h3{margin:0 0 9px;font-size:1.05rem}
.isl-topic-card p{margin:0;color:var(--isl-muted);font-size:.88rem;line-height:1.72}
.isl-topic-card a{font-weight:800}

/* Free resources */
.isl-free-grid{display:grid!important;grid-template-columns:minmax(0,1fr) minmax(300px,.65fr);gap:28px;align-items:stretch}
.isl-free-main{padding:clamp(30px,4.5vw,52px);border:1px solid #cfe5e7;border-radius:var(--isl-radius-lg);background:linear-gradient(135deg,#f9ffff,#eefafa);box-shadow:var(--isl-shadow-sm)}
.isl-free-main h2{margin-top:0}
.isl-free-promise{padding:30px;border-radius:var(--isl-radius-lg);background:var(--isl-warm);border:1px solid #f0dc9d}
.isl-free-promise h3{margin-top:0}
.isl-free-promise p,.isl-free-promise li{color:#675a39;line-height:1.8}

/* Practical flow */
.isl-step{padding:22px 0;border-top:1px solid var(--isl-line)}
.isl-step:last-child{border-bottom:1px solid var(--isl-line)}
.isl-step-number{min-width:58px;margin:0!important;font-size:1.34rem;font-weight:900;color:var(--isl-blue-650)}
.isl-step h3{margin:0 0 6px}
.isl-step p{margin:0;color:var(--isl-muted)}

/* Tools */
.isl-tool-grid{display:grid!important;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.isl-tool-card{height:100%;padding:26px;border:1px solid var(--isl-line);border-radius:20px;background:#fff}
.isl-tool-status{display:inline-block;margin:0 0 12px!important;padding:5px 9px;border-radius:999px;background:var(--isl-mint);color:var(--isl-success);font-size:.7rem;font-weight:900}
.isl-tool-card h3{margin:0 0 9px;font-size:1.13rem}
.isl-tool-card p{color:var(--isl-muted);line-height:1.75}
.isl-tool-note{margin-top:22px!important;color:var(--isl-muted);font-size:.88rem}

/* Query */
.isl-query .wp-block-post-template{gap:22px}
.isl-query .wp-block-post{overflow:hidden;border:1px solid var(--isl-line);border-radius:18px;background:#fff;box-shadow:var(--isl-shadow-sm)}
.isl-query .wp-block-post-featured-image{margin:0}
.isl-query .wp-block-post-featured-image img{width:100%;aspect-ratio:16/9;object-fit:cover}
.isl-query .isl-post-body{padding:22px}
.isl-query .wp-block-post-title{margin:8px 0 10px;font-size:1.14rem;line-height:1.5}
.isl-query .wp-block-post-title a{color:var(--isl-ink);text-decoration:none}
.isl-query .wp-block-post-title a:hover{color:var(--isl-blue-650)}
.isl-query .wp-block-post-excerpt__excerpt{color:var(--isl-muted);line-height:1.75}
.isl-query .wp-block-post-date,.isl-query .wp-block-post-terms{color:var(--isl-muted);font-size:.8rem}

/* CTA / content */
.isl-cta{padding:clamp(34px,5vw,58px);border-radius:var(--isl-radius-lg);background:var(--isl-navy-900);color:#fff;box-shadow:var(--isl-shadow)}
.isl-cta h2{margin-top:0;color:#fff}
.isl-cta p{color:rgba(255,255,255,.8)}
.isl-content{padding-top:58px;padding-bottom:86px}
.isl-content .wp-block-post-title,.isl-content>h1{font-size:clamp(2rem,4vw,3.2rem);letter-spacing:-.04em;line-height:1.25}
.isl-entry-meta{color:var(--isl-muted);font-size:.86rem}
.isl-content .wp-block-post-content{line-height:1.92}
.isl-content .wp-block-post-content h2{margin-top:2.2em;padding-bottom:.48em;border-bottom:2px solid var(--isl-line);letter-spacing:-.02em}
.isl-content .wp-block-post-content h3{margin-top:1.8em;letter-spacing:-.015em}
.isl-content .wp-block-post-content pre{overflow-x:auto;border-radius:12px}
.isl-content .wp-block-post-content code{font-size:.92em}
.isl-content .wp-block-post-content blockquote{margin-inline:0;border-left:4px solid var(--isl-cyan-500);padding-left:1.15em;color:#415363}
.isl-content .wp-block-post-content table{font-size:.94rem}
.isl-content .wp-block-post-content th{background:var(--isl-soft)}
.isl-article-notice{margin:28px 0;padding:18px 20px;border:1px solid #cce0ef;border-radius:14px;background:#f5faff;color:#40576a;font-size:.92rem}
.isl-editor-note{margin-top:42px;padding:24px;border:1px solid var(--isl-line);border-radius:18px;background:var(--isl-warm-2)}
.isl-editor-note h3{margin-top:0}
.isl-editor-note p{margin-bottom:0;color:#536a79}

/* Footer */
.isl-footer{padding:54px 0 26px;background:var(--isl-navy-900);color:rgba(255,255,255,.76)}
.isl-footer a{color:#fff}
.isl-footer .wp-block-site-title{font-size:1.23rem}
.isl-footer .wp-block-site-title a{color:#fff;text-decoration:none}
.isl-footer .wp-block-list{padding-left:1.1em}
.isl-footer-small{padding-top:24px;margin-top:32px!important;border-top:1px solid rgba(255,255,255,.15);font-size:.8rem;color:rgba(255,255,255,.5)}
.woocommerce .button,.woocommerce button.button,.woocommerce a.button{border-radius:999px!important;font-weight:800!important}

@media(max-width:1100px){.isl-topic-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.isl-route-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:960px){.isl-hero-grid{grid-template-columns:1fr;min-height:auto}.isl-note-card{max-width:620px;transform:none}.isl-story-wrap{grid-template-columns:1fr}.isl-story-card{position:static}.isl-free-grid{grid-template-columns:1fr}.isl-tool-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.isl-footer .wp-block-columns{flex-wrap:wrap!important}.isl-footer .wp-block-columns>.wp-block-column:first-child{flex-basis:100%!important}.isl-footer .wp-block-columns>.wp-block-column:not(:first-child){flex-basis:calc(50% - .75em)!important}}
@media(max-width:782px){.admin-bar .isl-header{top:46px}.isl-shell{width:min(100% - 28px,1180px)}.isl-header-inner{min-height:66px}.isl-brand-mark{width:34px;height:34px}.isl-hero-grid{padding-top:58px;padding-bottom:60px}.isl-hero h1{font-size:clamp(2.05rem,10vw,3.1rem)}.isl-note-card{padding:24px}.isl-route-grid,.isl-topic-grid,.isl-tool-grid{grid-template-columns:1fr}.isl-footer .wp-block-columns>.wp-block-column{flex-basis:100%!important}.isl-step{align-items:flex-start!important}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}