/*
Theme Name: Kotani China Business Media
Theme URI: https://blog.kotani.me/
Author: JCBO / Kotani Business
Description: 大量の記事をジャンル別・検索・年月別に整理して閲覧できる、小谷先生ブログのメディア型WordPressテーマ。
Version: 2.1.0
Requires at least: 6.2
Requires PHP: 8.0
Text Domain: kotani-china-business
*/

:root {
  --kc-bg:#07111f;
  --kc-surface:#0d1d30;
  --kc-surface-2:#132a42;
  --kc-gold:#d8a54a;
  --kc-gold-2:#f0c77d;
  --kc-red:#a51f26;
  --kc-text:#f6f2ea;
  --kc-muted:#b6c1ce;
  --kc-line:rgba(255,255,255,.12);
  --kc-shadow:0 24px 70px rgba(0,0,0,.35);
  --kc-radius:22px;
  --kc-width:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--kc-bg);color:var(--kc-text);font-family:"Noto Sans JP","Hiragino Kaku Gothic ProN","Yu Gothic",sans-serif;line-height:1.8}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto}
.kc-container{width:min(calc(100% - 40px),var(--kc-width));margin-inline:auto}
.kc-site-header{position:fixed;inset:0 0 auto;z-index:1000;background:linear-gradient(180deg,rgba(2,8,16,.92),rgba(2,8,16,.25),transparent);transition:.3s}
.kc-site-header.is-scrolled{background:rgba(4,13,24,.94);backdrop-filter:blur(14px);border-bottom:1px solid var(--kc-line)}
.kc-header-inner{display:flex;align-items:center;justify-content:space-between;min-height:84px;gap:24px}
.kc-brand{display:flex;align-items:center;gap:14px;font-weight:900;letter-spacing:.04em}
.kc-brand-mark{width:44px;height:44px;display:grid;place-items:center;border:1px solid rgba(240,199,125,.5);background:linear-gradient(145deg,#7f1219,#c53337);border-radius:12px;box-shadow:0 10px 30px rgba(165,31,38,.35)}
.kc-brand small{display:block;font-size:10px;color:var(--kc-gold-2);letter-spacing:.18em}
.kc-nav ul{display:flex;gap:28px;list-style:none;margin:0;padding:0;font-size:14px;font-weight:700}
.kc-nav a{position:relative;padding:28px 0}
.kc-nav a:after{content:"";position:absolute;left:0;right:100%;bottom:20px;height:2px;background:var(--kc-gold);transition:.25s}
.kc-nav a:hover:after{right:0}
.kc-header-contact{padding:11px 18px;border:1px solid rgba(240,199,125,.5);border-radius:999px;color:var(--kc-gold-2);font-weight:800;font-size:13px}
.kc-menu-toggle{display:none;background:none;border:1px solid var(--kc-line);color:#fff;border-radius:10px;padding:10px 12px}
.kc-hero{position:relative;min-height:100vh;display:flex;align-items:flex-end;isolation:isolate;overflow:hidden;background:#07111f}
.kc-hero:before{content:"";position:absolute;inset:0;background:url('assets/images/kotani-hero.png') center 25%/cover no-repeat;z-index:-3;animation:kcZoom 18s ease-in-out infinite alternate}
.kc-hero:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(2,8,16,.88) 0%,rgba(2,8,16,.45) 48%,rgba(2,8,16,.08) 72%),linear-gradient(0deg,#07111f 0%,transparent 34%);z-index:-2}
.kc-hero-glow{position:absolute;width:620px;height:620px;border-radius:50%;background:rgba(165,31,38,.22);filter:blur(90px);right:-180px;top:10%;z-index:-1;animation:kcFloat 8s ease-in-out infinite}
.kc-hero-inner{padding:160px 0 95px;display:grid;grid-template-columns:minmax(0,760px) 1fr;gap:40px;align-items:end}
.kc-eyebrow{display:inline-flex;align-items:center;gap:10px;color:var(--kc-gold-2);font-size:13px;font-weight:900;letter-spacing:.2em;text-transform:uppercase}
.kc-eyebrow:before{content:"";width:46px;height:1px;background:currentColor}
.kc-hero h1{font-family:"Noto Serif JP","Yu Mincho",serif;font-size:clamp(40px,6.2vw,84px);line-height:1.15;margin:18px 0 20px;letter-spacing:-.03em;text-shadow:0 8px 40px rgba(0,0,0,.5)}
.kc-hero h1 span{display:block;color:var(--kc-gold-2);font-size:.55em;letter-spacing:.02em;margin-top:8px}
.kc-hero-lead{font-size:clamp(17px,2vw,22px);font-weight:700;max-width:750px;color:#eef2f6;text-shadow:0 3px 22px #000}
.kc-hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.kc-btn{display:inline-flex;align-items:center;justify-content:center;min-height:54px;padding:0 26px;border-radius:8px;font-weight:900;letter-spacing:.03em;transition:.25s}
.kc-btn-primary{background:linear-gradient(135deg,#9f171f,#ca3439);box-shadow:0 12px 34px rgba(165,31,38,.38)}
.kc-btn-primary:hover{transform:translateY(-3px);box-shadow:0 18px 45px rgba(165,31,38,.5)}
.kc-btn-outline{border:1px solid rgba(255,255,255,.45);background:rgba(3,10,20,.32);backdrop-filter:blur(8px)}
.kc-hero-stat{justify-self:end;display:grid;gap:14px;width:min(100%,320px)}
.kc-stat{padding:20px 22px;background:rgba(7,17,31,.63);border:1px solid rgba(255,255,255,.16);backdrop-filter:blur(12px);border-radius:14px;box-shadow:var(--kc-shadow)}
.kc-stat strong{font-size:28px;color:var(--kc-gold-2);display:block;line-height:1.2}
.kc-stat span{font-size:12px;color:var(--kc-muted)}
.kc-scroll{position:absolute;left:50%;bottom:22px;transform:translateX(-50%);font-size:11px;letter-spacing:.2em;color:rgba(255,255,255,.65)}
.kc-scroll:after{content:"";display:block;width:1px;height:35px;background:linear-gradient(#fff,transparent);margin:8px auto 0;animation:kcScroll 1.6s infinite}
.kc-section{padding:100px 0;position:relative}
.kc-section-alt{background:linear-gradient(180deg,#091727,#0d2033)}
.kc-section-title{max-width:800px;margin-bottom:50px}
.kc-section-title h2{font-family:"Noto Serif JP",serif;font-size:clamp(31px,4vw,52px);line-height:1.25;margin:10px 0 16px}
.kc-section-title p{color:var(--kc-muted);font-size:17px}
.kc-profile-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:50px;align-items:center}
.kc-profile-visual{position:relative;border-radius:var(--kc-radius);overflow:hidden;box-shadow:var(--kc-shadow);min-height:560px;background:url('assets/images/kotani-hero.png') 48% 52%/cover no-repeat}
.kc-profile-visual:after{content:"1997 → SHANGHAI → JAPAN";position:absolute;left:22px;right:22px;bottom:22px;padding:18px 20px;background:rgba(4,12,22,.78);border-left:4px solid var(--kc-gold);font-weight:900;letter-spacing:.12em}
.kc-profile-copy h3{font-size:30px;line-height:1.5;margin:0 0 22px}
.kc-profile-copy p{color:#d6dde5;margin:0 0 18px}
.kc-signature{font-family:"Noto Serif JP",serif;font-size:24px;color:var(--kc-gold-2);margin-top:28px}
.kc-services{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.kc-card{position:relative;padding:30px;background:linear-gradient(145deg,rgba(21,45,70,.96),rgba(10,25,42,.96));border:1px solid var(--kc-line);border-radius:18px;overflow:hidden;transition:.3s;min-height:290px}
.kc-card:before{content:"";position:absolute;inset:auto -70px -100px auto;width:180px;height:180px;background:rgba(216,165,74,.12);border-radius:50%;filter:blur(3px)}
.kc-card:hover{transform:translateY(-8px);border-color:rgba(240,199,125,.45);box-shadow:var(--kc-shadow)}
.kc-card-no{font-family:Georgia,serif;color:var(--kc-gold);font-size:13px;letter-spacing:.18em}
.kc-card h3{font-size:23px;line-height:1.45;margin:15px 0 14px}
.kc-card p{color:var(--kc-muted);font-size:14px}
.kc-timeline{position:relative;display:grid;gap:0;max-width:920px;margin:0 auto}
.kc-timeline:before{content:"";position:absolute;left:132px;top:0;bottom:0;width:1px;background:linear-gradient(transparent,var(--kc-gold),transparent)}
.kc-timeline-item{display:grid;grid-template-columns:110px 1fr;gap:46px;padding:28px 0}
.kc-year{font-family:Georgia,serif;font-size:23px;color:var(--kc-gold-2);text-align:right}
.kc-timeline-content{position:relative;background:rgba(255,255,255,.035);padding:24px 28px;border:1px solid var(--kc-line);border-radius:14px}
.kc-timeline-content:before{content:"";position:absolute;left:-27px;top:32px;width:11px;height:11px;background:var(--kc-red);border:3px solid var(--kc-gold-2);border-radius:50%;box-shadow:0 0 0 7px rgba(216,165,74,.1)}
.kc-timeline-content h3{margin:0 0 8px;font-size:21px}
.kc-timeline-content p{margin:0;color:var(--kc-muted)}
.kc-post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.kc-post{background:#101f30;border:1px solid var(--kc-line);border-radius:16px;overflow:hidden;transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;position:relative}
.kc-post:hover{transform:translateY(-8px);box-shadow:0 24px 55px rgba(0,0,0,.34);border-color:rgba(216,165,74,.45)}
.kc-post-thumb{aspect-ratio:16/10;background:linear-gradient(135deg,#162d48,#6e171b);overflow:hidden;position:relative}
.kc-post-thumb img{width:100%;height:100%;object-fit:cover;transition:.5s}
.kc-post:hover .kc-post-thumb img{transform:scale(1.075)}
.kc-post-body{padding:22px}
.kc-post h3{font-size:20px;line-height:1.55;margin:0 0 10px}
.kc-post p{color:var(--kc-muted);font-size:14px;margin:0}
.kc-contact{background:radial-gradient(circle at 85% 20%,rgba(165,31,38,.35),transparent 32%),linear-gradient(135deg,#121f30,#07111f);border:1px solid rgba(240,199,125,.22);border-radius:28px;padding:55px;display:grid;grid-template-columns:1.3fr .7fr;gap:40px;align-items:center;box-shadow:var(--kc-shadow)}
.kc-contact h2{font-family:"Noto Serif JP",serif;font-size:clamp(30px,4vw,50px);margin:0 0 14px}
.kc-contact p{color:var(--kc-muted)}
.kc-contact-list{display:grid;gap:12px;margin-top:25px}
.kc-contact-item{display:flex;align-items:center;gap:13px;padding:13px 16px;background:rgba(255,255,255,.045);border-radius:10px}
.kc-qr{justify-self:end;text-align:center}
.kc-qr img{width:210px;height:210px;object-fit:contain;background:#fff;padding:10px;border-radius:14px}
.kc-qr span{display:block;margin-top:10px;color:var(--kc-gold-2);font-weight:800;font-size:13px}
.kc-site-footer{padding:42px 0;background:#030911;border-top:1px solid var(--kc-line);color:#8390a0;font-size:13px}
.kc-footer-inner{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
.kc-content-wrap{padding:140px 0 90px;min-height:70vh}
.kc-article{max-width:860px;margin:auto;background:#fff;color:#182230;padding:clamp(24px,5vw,60px);border-radius:18px}
.kc-article h1{font-family:"Noto Serif JP",serif;line-height:1.4}
.kc-article a{color:#8d1820;text-decoration:underline}
.kc-archive-title{font-size:42px;font-family:"Noto Serif JP",serif;margin-bottom:36px}
.kc-pagination{margin-top:40px}
.kc-reveal{opacity:0;transform:translateY(26px);transition:.75s ease}
.kc-reveal.is-visible{opacity:1;transform:none}
@keyframes kcZoom{from{transform:scale(1)}to{transform:scale(1.06)}}
@keyframes kcFloat{50%{transform:translateY(30px) scale(1.08)}}
@keyframes kcScroll{0%{transform:scaleY(0);transform-origin:top}50%{transform:scaleY(1);transform-origin:top}51%{transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}
@media(max-width:980px){.kc-nav,.kc-header-contact{display:none}.kc-menu-toggle{display:block}.kc-nav.is-open{display:block;position:absolute;left:20px;right:20px;top:74px;background:#07111f;border:1px solid var(--kc-line);border-radius:14px;padding:16px}.kc-nav.is-open ul{display:grid;gap:0}.kc-nav.is-open a{display:block;padding:13px}.kc-hero-inner{grid-template-columns:1fr}.kc-hero-stat{justify-self:start;grid-template-columns:repeat(3,1fr);width:100%}.kc-services,.kc-post-grid{grid-template-columns:repeat(2,1fr)}.kc-profile-grid,.kc-contact{grid-template-columns:1fr}.kc-qr{justify-self:start}}
@media(max-width:640px){.kc-container{width:min(calc(100% - 28px),var(--kc-width))}.kc-header-inner{min-height:70px}.kc-hero-inner{padding-top:125px}.kc-hero h1{font-size:43px}.kc-hero-stat{grid-template-columns:1fr}.kc-stat{padding:14px 16px}.kc-services,.kc-post-grid{grid-template-columns:1fr}.kc-section{padding:72px 0}.kc-profile-visual{min-height:420px}.kc-timeline:before{left:15px}.kc-timeline-item{grid-template-columns:1fr;gap:8px;padding-left:38px}.kc-year{text-align:left}.kc-timeline-content:before{left:-30px}.kc-contact{padding:30px 22px}.kc-qr img{width:180px;height:180px}}


/* ===== Media archive v2 ===== */
.kc-media-hero{padding:145px 0 62px;background:radial-gradient(circle at 85% 15%,rgba(165,31,38,.25),transparent 30%),linear-gradient(135deg,#07111f,#10263b);border-bottom:1px solid var(--kc-line)}
.kc-media-hero h1{font-family:"Noto Serif JP",serif;font-size:clamp(36px,5vw,64px);line-height:1.25;margin:10px 0 15px}.kc-media-hero p{max-width:760px;color:var(--kc-muted);font-size:17px}
.kc-search-panel{margin-top:30px;display:flex;gap:10px;max-width:760px}.kc-search-panel input[type=search]{flex:1;min-width:0;padding:16px 18px;border:1px solid var(--kc-line);border-radius:10px;background:#fff;color:#182230;font-size:16px}.kc-search-panel button{border:0;padding:0 24px;border-radius:10px;background:var(--kc-red);color:#fff;font-weight:900;cursor:pointer}
.kc-media-layout{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:38px;align-items:start}.kc-sidebar{position:sticky;top:108px;display:grid;gap:20px}.kc-widget{padding:23px;background:#0d1d30;border:1px solid var(--kc-line);border-radius:16px}.kc-widget h3{margin:0 0 15px;font-size:17px;color:var(--kc-gold-2)}.kc-widget ul{list-style:none;padding:0;margin:0;display:grid;gap:9px}.kc-widget li a{display:flex;justify-content:space-between;gap:12px;color:#dbe3ec;font-size:14px}.kc-widget li a:hover{color:var(--kc-gold-2)}
.kc-filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin:0 0 26px}.kc-filter-chip{padding:9px 14px;border-radius:999px;border:1px solid var(--kc-line);background:#0d1d30;font-size:13px;font-weight:800}.kc-filter-chip:hover,.kc-filter-chip.is-active{background:var(--kc-red);border-color:var(--kc-red)}
.kc-post-grid.kc-post-grid-wide{grid-template-columns:repeat(3,minmax(0,1fr))}.kc-post-cats{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:10px}.kc-post-cat{font-size:11px;padding:3px 8px;border-radius:999px;background:rgba(216,165,74,.15);color:var(--kc-gold-2)}.kc-post-footer{display:flex;justify-content:flex-end;gap:12px;color:var(--kc-gold-2);font-size:12px;font-weight:700;letter-spacing:.04em;margin-top:18px;padding-top:14px;border-top:1px solid var(--kc-line)}.kc-post-footer b{display:inline-block;transition:transform .25s}.kc-post:hover .kc-post-footer b{transform:translateX(5px)}.kc-post-shine{position:absolute;inset:-40% auto -40% -65%;width:36%;transform:skewX(-20deg);background:linear-gradient(90deg,transparent,rgba(255,255,255,.22),transparent);transition:left .75s ease;pointer-events:none}.kc-post:hover .kc-post-shine{left:135%}
.kc-category-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.kc-category-card{padding:24px;background:linear-gradient(145deg,#132a42,#0b1b2c);border:1px solid var(--kc-line);border-radius:16px;transition:.25s}.kc-category-card:hover{transform:translateY(-5px);border-color:rgba(240,199,125,.45)}.kc-category-card strong{display:block;font-size:18px;margin-bottom:5px}.kc-category-card span{color:var(--kc-gold-2);font-size:12px}
.kc-featured-grid{display:grid;grid-template-columns:1.35fr .65fr;gap:22px}.kc-featured-main,.kc-featured-side article{position:relative;overflow:hidden;border-radius:18px;min-height:420px;background:#132a42}.kc-featured-main img,.kc-featured-side img{width:100%;height:100%;object-fit:cover}.kc-featured-main:after,.kc-featured-side article:after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(0,0,0,.9),transparent 70%)}.kc-featured-copy{position:absolute;z-index:2;left:25px;right:25px;bottom:24px}.kc-featured-copy h2,.kc-featured-copy h3{margin:8px 0 0;line-height:1.45}.kc-featured-side{display:grid;gap:22px}.kc-featured-side article{min-height:199px}
.kc-article-meta{display:flex;flex-wrap:wrap;gap:10px 18px;margin:0 0 24px;color:#6b7785;font-size:13px}.kc-article-tax{margin:30px 0 0;padding-top:20px;border-top:1px solid #dde3e8}.kc-related{max-width:1080px;margin:45px auto 0}.kc-related h2{font-family:"Noto Serif JP",serif}
.kc-empty{padding:50px;text-align:center;border:1px solid var(--kc-line);border-radius:18px;background:#0d1d30}.kc-pagination .nav-links{display:flex;gap:8px;justify-content:center;flex-wrap:wrap}.kc-pagination .page-numbers{padding:9px 13px;border:1px solid var(--kc-line);border-radius:8px}.kc-pagination .current{background:var(--kc-red);border-color:var(--kc-red)}
.kc-qr-default{width:210px;height:210px;object-fit:contain;background:#fff;padding:10px;border-radius:14px}
@media(max-width:1100px){.kc-post-grid.kc-post-grid-wide{grid-template-columns:repeat(2,1fr)}.kc-category-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:900px){.kc-media-layout{grid-template-columns:1fr}.kc-sidebar{position:static}.kc-featured-grid{grid-template-columns:1fr}.kc-featured-main{min-height:360px}.kc-featured-side{grid-template-columns:1fr 1fr}.kc-featured-side article{min-height:230px}}
@media(max-width:640px){.kc-search-panel{display:grid}.kc-search-panel button{min-height:50px}.kc-post-grid.kc-post-grid-wide,.kc-category-grid,.kc-featured-side{grid-template-columns:1fr}.kc-featured-main{min-height:320px}}