/* ==========================================================================
   AI Navi — Design System v2 "AI DISCOVERY EXPERIENCE"
   AIを知る。比較する。使いこなす。
   他ジャンル展開を見据え、カラー・サイズ等はすべて変数化しています。
   別ジャンルサイトを作る際は :root の変数とロゴ文言のみ変更すれば
   同じ構造・コンポーネントを再利用できます。
   ========================================================================== */

/* ---- Design Tokens ------------------------------------------------------ */
:root{
  /* Brand palette (2026 renewal) */
  --color-white:#ffffff;
  --color-bg:#ffffff;
  --color-bg-soft:#F5F7FB;      /* Soft Gray */
  --color-bg-soft-2:#eceffa;
  --color-navy:#10172A;         /* Midnight Navy */
  --color-navy-800:#141c33;
  --color-navy-700:#1a2440;
  --color-navy-600:#243B80;     /* Deep Blue */
  --color-black:#060910;
  --color-text:#20283A;         /* Text Dark */
  --color-text-muted:#5c6480;
  --color-text-faint:#8d93ac;
  --color-border:#e4e8f4;
  --color-border-dark:#2c3660;

  --color-accent:#8066F5;       /* Violet */
  --color-accent-2:#4778FF;     /* Electric Blue */
  --color-accent-soft:#eef0ff;
  --color-accent-dark:#5a46d6;
  --color-success:#17a673;
  --color-warning:#e0a300;
  --color-danger:#e14a4a;

  --gradient-brand:linear-gradient(120deg,#4778FF 0%,#8066F5 100%);
  --gradient-brand-2:linear-gradient(120deg,#8066F5 0%,#4778FF 55%,#10172A 120%);
  --gradient-navy:linear-gradient(160deg,#10172A 0%,#1a2256 55%,#243B80 100%);
  --gradient-navy-radial:
    radial-gradient(900px 480px at 85% -10%, rgba(128,102,245,.45), transparent 60%),
    radial-gradient(760px 480px at 8% 115%, rgba(71,120,255,.38), transparent 60%);

  /* Typography */
  --font-base:'Noto Sans JP','Inter',-apple-system,BlinkMacSystemFont,'Hiragino Kaku Gothic ProN','Yu Gothic',sans-serif;
  --font-display:'Space Grotesk','Inter','Noto Sans JP',-apple-system,sans-serif;

  /* Radius / Shadow */
  --radius-sm:8px;
  --radius-md:16px;
  --radius-lg:26px;
  --radius-xl:34px;
  --radius-full:999px;
  --shadow-sm:0 1px 2px rgba(16,23,42,.06), 0 1px 1px rgba(16,23,42,.04);
  --shadow-md:0 14px 34px -14px rgba(16,23,42,.22);
  --shadow-lg:0 30px 60px -20px rgba(16,23,42,.3);
  --shadow-accent:0 16px 36px -12px rgba(128,102,245,.45);
  --shadow-glow:0 0 0 1px rgba(255,255,255,.06), 0 20px 60px -20px rgba(71,120,255,.4);

  /* Layout */
  --container-w:1280px;
  --container-pad:24px;
  --header-h:76px;

  --ease:cubic-bezier(.22,.61,.36,1);
  --ease-soft:cubic-bezier(.16,.84,.44,1);
}

/* ---- Font import --------------------------------------------------------- */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=Noto+Sans+JP:wght@400;500;700;900&display=swap');

/* ---- Reset --------------------------------------------------------------- */
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-base);
  color:var(--color-text);
  background:var(--color-bg);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul,ol{margin:0;padding:0;}
button{font-family:inherit;}
h1,h2,h3,h4,h5,p{margin:0;}
table{border-collapse:collapse;width:100%;}
input,textarea,select{font-family:inherit;font-size:1rem;}
::selection{background:var(--color-accent);color:#fff;}

/* ---- Typography scale ----------------------------------------------------*/
h1,h2,h3,h4{font-family:var(--font-display),var(--font-base);font-weight:700;letter-spacing:-0.01em;color:var(--color-text);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-display);
  font-size:.76rem;font-weight:700;letter-spacing:.14em;
  color:var(--color-accent-2);text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--gradient-brand);border-radius:2px;display:inline-block;}
.section-head{max-width:720px;margin:0 0 44px;}
.section-head h2{font-size:clamp(1.6rem,3.4vw,2.35rem);line-height:1.3;margin-top:12px;}
.section-head p{color:var(--color-text-muted);margin-top:14px;font-size:1rem;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}

/* ---- Layout helpers -------------------------------------------------------*/
.container{max-width:var(--container-w);margin:0 auto;padding:0 var(--container-pad);}
.section{padding:100px 0;position:relative;}
.section-tight{padding:60px 0;}
.bg-soft{background:var(--color-bg-soft);}
.bg-navy{background:var(--color-navy);background-image:var(--gradient-navy-radial);background-color:var(--color-navy);color:#fff;position:relative;overflow:hidden;}
.bg-navy .section-head h2,.bg-navy > .container > h1,.bg-navy > .container > h2,.bg-navy .final-cta h2{color:#fff;}
.bg-navy .section-head p{color:#b8bdda;}
.bg-navy > .container > p{color:#b8bdda;}
.bg-navy .card,.bg-navy .card h3,.bg-navy .card p{color:var(--color-text);}
.bg-navy .card .ac-tag{color:var(--color-navy-600);}
.bg-navy::after{content:"";position:absolute;inset:0;background-image:radial-gradient(1px 1px at 20% 30%, rgba(255,255,255,.18) 1px, transparent 0),radial-gradient(1px 1px at 70% 60%, rgba(255,255,255,.14) 1px, transparent 0),radial-gradient(1px 1px at 40% 80%, rgba(255,255,255,.12) 1px, transparent 0);background-size:220px 220px;pointer-events:none;opacity:.6;}
.bg-navy .container{position:relative;z-index:1;}
.grid{display:grid;gap:24px;}
.grid-2{grid-template-columns:repeat(2,1fr);}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}
.flex{display:flex;}
.flex-between{display:flex;align-items:center;justify-content:space-between;}
.flex-wrap{flex-wrap:wrap;}
.text-center{text-align:center;}
.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

/* ---- Buttons ---------------------------------------------------------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--radius-full);
  font-weight:700;font-size:.95rem;border:1px solid transparent;
  cursor:pointer;transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
  white-space:nowrap;position:relative;overflow:hidden;
}
.btn:active{transform:translateY(1px) scale(.98);}
.btn-primary{background:var(--gradient-brand);color:#fff;box-shadow:var(--shadow-accent);}
.btn-primary:hover{box-shadow:0 20px 40px -12px rgba(128,102,245,.6);transform:translateY(-2px);}
.btn-primary::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,transparent,rgba(255,255,255,.35),transparent);transform:translateX(-120%);transition:transform .6s var(--ease);}
.btn-primary:hover::after{transform:translateX(120%);}
.btn-outline{background:transparent;border-color:rgba(16,23,42,.18);color:var(--color-text);}
.btn-outline:hover{border-color:var(--color-accent);color:var(--color-accent);}
.btn-ghost{background:var(--color-bg-soft);color:var(--color-text);}
.btn-ghost:hover{background:var(--color-bg-soft-2);}
.btn-block{width:100%;}
.btn-sm{padding:10px 20px;font-size:.85rem;}
.btn-lg{padding:17px 34px;font-size:1.03rem;}
.btn[disabled]{opacity:.45;cursor:not-allowed;}

/* ---- Header / Nav ------------------------------------------------------- */
.site-header{
  position:sticky;top:0;z-index:200;
  background:rgba(16,23,42,.72);backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.08);
  height:var(--header-h);
  transition:background .3s var(--ease),height .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header.is-scrolled{
  height:64px;background:rgba(16,23,42,.92);box-shadow:0 10px 30px -14px rgba(0,0,0,.5);
}
.site-header .container{height:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:1.18rem;font-family:var(--font-display);}
.brand .mark{
  width:36px;height:36px;border-radius:11px;background:var(--gradient-brand);
  display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:.92rem;
  box-shadow:0 8px 18px -6px rgba(128,102,245,.6);flex:none;
}
.main-nav{display:flex;align-items:center;gap:2px;}
.main-nav a{
  color:#d9dcef;font-size:.92rem;font-weight:600;padding:10px 15px;border-radius:var(--radius-full);
  transition:background .2s,color .2s;position:relative;
}
.main-nav a:hover,.main-nav a.active{background:rgba(255,255,255,.1);color:#fff;}
.header-actions{display:flex;align-items:center;gap:10px;}
.header-search-btn{
  width:40px;height:40px;border-radius:50%;border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);
  color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:1rem;transition:background .2s,border-color .2s;
}
.header-search-btn:hover{background:rgba(255,255,255,.14);border-color:var(--color-accent-2);}
.nav-toggle{
  display:none;background:transparent;border:none;color:#fff;font-size:1.5rem;cursor:pointer;
  width:40px;height:40px;align-items:center;justify-content:center;
}
.mobile-nav{
  display:none;position:fixed;inset:var(--header-h) 0 0 0;background:var(--color-navy);
  z-index:190;padding:24px;overflow-y:auto;
}
.mobile-nav.open{display:block;}
.mobile-nav a{
  display:block;color:#fff;padding:16px 4px;font-weight:700;font-size:1.05rem;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.mobile-nav .mn-sub{padding-left:14px;}
.mobile-nav .mn-sub a{font-weight:500;font-size:.95rem;color:#c3c7df;padding:12px 4px;}
.mobile-cta{margin-top:20px;}

/* ---- Header search overlay ----------------------------------------------*/
.header-search-overlay{
  position:fixed;inset:0;background:rgba(10,13,26,.78);backdrop-filter:blur(6px);z-index:260;
  display:none;align-items:flex-start;justify-content:center;padding:14vh 20px 20px;
}
.header-search-overlay.open{display:flex;}
.hso-box{width:100%;max-width:640px;background:var(--color-navy);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius-lg);padding:28px;box-shadow:var(--shadow-lg);}
.hso-box input{width:100%;padding:16px 20px;border-radius:var(--radius-full);border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.08);color:#fff;font-size:1rem;}
.hso-box input::placeholder{color:#9aa0c0;}
.hso-close{position:absolute;top:18px;right:24px;color:#fff;background:none;border:none;font-size:1.6rem;cursor:pointer;}
.hso-results{margin-top:16px;max-height:40vh;overflow-y:auto;}
.hso-item{display:flex;align-items:center;gap:12px;padding:10px 8px;border-radius:12px;color:#e7e9f6;}
.hso-item:hover{background:rgba(255,255,255,.08);}
.hso-empty{color:#9aa0c0;font-size:.9rem;padding:16px 8px;}

/* ---- Breadcrumb ---------------------------------------------------------*/
.breadcrumb{padding:18px 0;font-size:.82rem;color:var(--color-text-faint);}
.breadcrumb a{color:var(--color-text-muted);}
.breadcrumb a:hover{color:var(--color-accent);}
.breadcrumb .sep{margin:0 6px;}

/* ---- Scroll progress / back to top ---------------------------------------*/
.scroll-progress{position:fixed;top:0;left:0;height:3px;background:var(--gradient-brand);z-index:300;width:0%;transition:width .1s linear;}
.back-to-top{
  position:fixed;right:22px;bottom:22px;width:48px;height:48px;border-radius:50%;
  background:var(--gradient-brand);color:#fff;border:none;display:flex;align-items:center;justify-content:center;
  font-size:1.2rem;cursor:pointer;box-shadow:var(--shadow-accent);opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s;z-index:150;
}
.back-to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.back-to-top:hover{transform:translateY(-3px);}

/* ---- HERO (brand new) ----------------------------------------------------*/
.hero{
  position:relative;overflow:hidden;background:var(--color-navy);background-image:var(--gradient-navy-radial);color:#fff;
  padding:120px 0 128px;isolation:isolate;
}
.hero::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:
    radial-gradient(760px 420px at 88% -10%, rgba(128,102,245,.5), transparent 62%),
    radial-gradient(640px 420px at 6% 112%, rgba(71,120,255,.42), transparent 62%),
    linear-gradient(160deg,#10172A 0%,#161d3d 55%,#20306e 100%);
  pointer-events:none;
}
.hero-grid-bg{position:absolute;inset:0;z-index:-1;opacity:.35;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px),linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px);
  background-size:64px 64px;mask-image:radial-gradient(circle at 70% 20%, black, transparent 70%);
}
.hero-orb{position:absolute;border-radius:50%;filter:blur(40px);z-index:-1;opacity:.55;animation:orbFloat 10s ease-in-out infinite;}
.hero-orb.o1{width:280px;height:280px;background:var(--color-accent);top:-60px;right:8%;}
.hero-orb.o2{width:220px;height:220px;background:var(--color-accent-2);bottom:-40px;left:4%;animation-delay:2s;}
@keyframes orbFloat{0%,100%{transform:translateY(0) scale(1);}50%{transform:translateY(-24px) scale(1.06);}}
.hero .container{position:relative;}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:52px;align-items:center;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.16);color:#d7daf4;font-size:.78rem;font-weight:700;
  padding:8px 16px;border-radius:var(--radius-full);letter-spacing:.08em;
  opacity:0;animation:fadeUp .7s var(--ease-soft) forwards;
}
.hero-eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--color-accent-2);box-shadow:0 0 10px var(--color-accent-2);}
.hero h1{
  font-size:clamp(2.3rem,4.8vw,3.7rem);line-height:1.28;margin-top:24px;color:#fff;font-weight:700;
}
.hero h1 .line{display:block;opacity:0;transform:translateY(24px);animation:fadeUp .8s var(--ease-soft) forwards;}
.hero h1 .line:nth-child(1){animation-delay:.15s;}
.hero h1 .line:nth-child(2){animation-delay:.38s;}
.hero h1 .line:nth-child(3){animation-delay:.6s;}
.hero h1 .accent{background:var(--gradient-brand);-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero p.lead{margin-top:22px;font-size:1.1rem;color:#c3c7df;max-width:560px;opacity:0;animation:fadeUp .8s var(--ease-soft) .85s forwards;}
.hero-actions{display:flex;gap:14px;margin-top:36px;flex-wrap:wrap;opacity:0;animation:fadeUp .8s var(--ease-soft) 1.05s forwards;}
.hero-stats{display:flex;gap:30px;margin-top:46px;flex-wrap:wrap;opacity:0;animation:fadeUp .8s var(--ease-soft) 1.25s forwards;}
.hero-stats div strong{display:block;font-size:1.7rem;font-family:var(--font-display);color:#fff;}
.hero-stats div span{font-size:.8rem;color:#9aa0c0;}
.scroll-indicator{position:absolute;left:50%;bottom:28px;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:8px;color:#9aa0c0;font-size:.72rem;letter-spacing:.1em;opacity:0;animation:fadeUp .8s var(--ease-soft) 1.5s forwards;}
.scroll-indicator .wheel{width:22px;height:34px;border:2px solid rgba(255,255,255,.35);border-radius:14px;position:relative;}
.scroll-indicator .wheel::before{content:"";position:absolute;top:6px;left:50%;width:4px;height:8px;background:var(--color-accent-2);border-radius:2px;transform:translateX(-50%);animation:wheelMove 1.6s ease-in-out infinite;}
@keyframes wheelMove{0%{opacity:1;top:6px;}70%{opacity:0;top:18px;}100%{opacity:0;top:6px;}}
@keyframes fadeUp{to{opacity:1;transform:translateY(0);}}

.hero-visual{position:relative;height:420px;}
.hv-panel{
  position:absolute;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius-lg);backdrop-filter:blur(10px);box-shadow:var(--shadow-glow);
  padding:18px 20px;color:#fff;opacity:0;animation:panelIn .9s var(--ease-soft) forwards;
}
.hv-panel h4{font-size:.82rem;color:#d7daf4;font-weight:700;}
.hv-panel p{font-size:1.3rem;font-weight:700;margin-top:4px;font-family:var(--font-display);}
.hv-p1{top:4%;left:4%;width:220px;animation-delay:.7s;animation-name:panelIn,floatA;animation-duration:.9s,7s;animation-iteration-count:1,infinite;animation-timing-function:var(--ease-soft),ease-in-out;animation-delay:.7s,.7s;}
.hv-p2{top:38%;right:0;width:200px;animation-delay:1s;animation-name:panelIn,floatB;animation-duration:.9s,8s;animation-iteration-count:1,infinite;animation-timing-function:var(--ease-soft),ease-in-out;animation-delay:1s,1s;}
.hv-p3{bottom:2%;left:14%;width:230px;animation-delay:1.25s;animation-name:panelIn,floatA;animation-duration:.9s,9s;animation-iteration-count:1,infinite;animation-timing-function:var(--ease-soft),ease-in-out;animation-delay:1.25s,1.25s;}
.hv-core{position:absolute;top:50%;left:50%;width:180px;height:180px;transform:translate(-50%,-50%);border-radius:50%;
  background:conic-gradient(from 0deg, rgba(128,102,245,.9), rgba(71,120,255,.9), rgba(128,102,245,.9));
  filter:blur(2px);opacity:.75;animation:spin 14s linear infinite, fadeUp .9s var(--ease-soft) .3s forwards;}
.hv-core::after{content:"";position:absolute;inset:14px;border-radius:50%;background:var(--color-navy);}
@keyframes panelIn{from{opacity:0;transform:translateY(20px) scale(.94);}to{opacity:1;transform:translateY(0) scale(1);}}
@keyframes floatA{0%,100%{transform:translateY(0);}50%{transform:translateY(-14px);}}
@keyframes floatB{0%,100%{transform:translateY(0);}50%{transform:translateY(12px);}}
@keyframes spin{to{transform:translate(-50%,-50%) rotate(360deg);}}

/* ---- AI SEARCH section -----------------------------------------------------*/
.search-section{background:var(--color-bg);}
.search-shell{
  max-width:820px;margin:0 auto;background:#fff;border:1px solid var(--color-border);
  border-radius:var(--radius-xl);padding:40px;box-shadow:var(--shadow-lg);position:relative;
}
.search-shell::before{content:"";position:absolute;inset:-1px;border-radius:var(--radius-xl);padding:1px;
  background:var(--gradient-brand);opacity:.18;-webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);-webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none;}
.ai-search-box{display:flex;gap:10px;position:relative;}
.ai-search-box input{
  flex:1;border-radius:var(--radius-full);border:2px solid var(--color-border);
  background:var(--color-bg-soft);color:var(--color-text);padding:17px 22px;font-size:1rem;
  transition:border-color .2s,box-shadow .2s;
}
.ai-search-box input:focus{outline:none;border-color:var(--color-accent);box-shadow:0 0 0 4px rgba(128,102,245,.14);background:#fff;}
.ai-search-box button{border:none;}
.ai-search-suggest{
  position:absolute;top:calc(100% + 10px);left:0;right:0;background:#fff;border:1px solid var(--color-border);
  border-radius:var(--radius-md);box-shadow:var(--shadow-lg);z-index:20;max-height:360px;overflow-y:auto;display:none;
}
.ai-search-suggest.open{display:block;}
.ass-item{display:flex;align-items:center;gap:12px;padding:12px 18px;cursor:pointer;transition:background .15s;}
.ass-item:hover,.ass-item.active{background:var(--color-bg-soft);}
.ass-item .ass-logo{width:34px;height:34px;border-radius:9px;flex:none;color:#fff;display:flex;align-items:center;justify-content:center;font-size:.72rem;font-weight:700;}
.ass-item .ass-name{font-weight:700;font-size:.92rem;}
.ass-item .ass-cat{font-size:.76rem;color:var(--color-text-faint);}
.ass-empty{padding:22px 18px;color:var(--color-text-muted);font-size:.9rem;text-align:center;}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;justify-content:center;}
.chip{
  background:var(--color-bg-soft);border:1px solid var(--color-border);color:var(--color-text);
  padding:9px 16px;border-radius:var(--radius-full);font-size:.84rem;font-weight:600;cursor:pointer;
  transition:background .18s,border-color .18s,color .18s,transform .18s;
}
.chip:hover{background:var(--color-accent-soft);border-color:var(--color-accent);color:var(--color-accent-dark);transform:translateY(-2px);}

/* legacy hero search-panel (kept for compatibility on other pages) --------*/
.search-panel{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  border-radius:var(--radius-lg);padding:28px;backdrop-filter:blur(6px);
}
.search-panel h3{color:#fff;font-size:1.05rem;}
.search-box{display:flex;gap:8px;margin-top:16px;}
.search-box input{
  flex:1;border-radius:var(--radius-full);border:1px solid rgba(255,255,255,.2);
  background:rgba(255,255,255,.08);color:#fff;padding:13px 18px;font-size:.92rem;
}
.search-box input::placeholder{color:#9aa0c0;}
.search-box button{border:none;}

/* ---- Cards ----------------------------------------------------------------*/
.card{
  background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-md);
  box-shadow:var(--shadow-sm);transition:box-shadow .28s var(--ease),transform .28s var(--ease),border-color .28s var(--ease);
}
.card:hover{box-shadow:var(--shadow-md);transform:translateY(-5px);border-color:rgba(128,102,245,.25);}

.tool-card{display:flex;flex-direction:column;padding:26px;height:100%;}
.tool-card .tc-top{display:flex;align-items:center;gap:14px;}
.tool-logo{
  width:52px;height:52px;border-radius:15px;display:flex;align-items:center;justify-content:center;
  color:#fff;font-weight:700;font-size:1.05rem;flex:none;font-family:var(--font-display);
  box-shadow:0 8px 18px -8px rgba(0,0,0,.35);
}
.tool-card .tc-rank{
  width:28px;height:28px;border-radius:50%;background:var(--color-bg-soft);color:var(--color-text-muted);
  font-size:.78rem;font-weight:700;display:flex;align-items:center;justify-content:center;flex:none;
}
.tool-card h3{font-size:1.1rem;margin-top:18px;}
.tool-card .tc-cat{font-size:.74rem;color:var(--color-accent-2);font-weight:700;margin-top:4px;}
.tool-card p.tc-summary{color:var(--color-text-muted);font-size:.9rem;margin-top:10px;flex:1;}
.tag-row{display:flex;flex-wrap:wrap;gap:6px;margin-top:14px;}
.tag{
  background:var(--color-bg-soft);color:var(--color-text-muted);font-size:.72rem;font-weight:700;
  padding:5px 11px;border-radius:var(--radius-full);
}
.tag.free{background:#e6f8f1;color:var(--color-success);}
.tc-price{margin-top:14px;font-size:.84rem;color:var(--color-text);font-weight:700;}
.tc-price span{font-weight:400;color:var(--color-text-faint);}
.tc-actions{display:flex;gap:8px;margin-top:18px;flex-wrap:wrap;}
.tc-actions .btn{flex:1;}

/* Horizontal compare row card (ranking lists) */
.rank-item{
  display:grid;grid-template-columns:48px 72px 1.6fr 1fr auto;gap:20px;align-items:center;
  padding:24px;border:1px solid var(--color-border);border-radius:var(--radius-md);background:#fff;
  transition:box-shadow .25s var(--ease),transform .25s var(--ease);
}
.rank-item:hover{box-shadow:var(--shadow-md);transform:translateY(-3px);}
.rank-item + .rank-item{margin-top:16px;}
.rank-num{font-family:var(--font-display);font-size:1.7rem;font-weight:700;color:var(--color-border-dark);opacity:.28;}
.rank-item:nth-child(1) .rank-num,.rank-no-1{color:#e0a300;opacity:1;}
.rank-item:nth-child(2) .rank-num,.rank-no-2{color:#9095ab;opacity:1;}
.rank-item:nth-child(3) .rank-num,.rank-no-3{color:#b8835a;opacity:1;}
.rank-body h3{font-size:1.06rem;}
.rank-body .tc-cat{font-size:.72rem;}
.rank-meta{font-size:.84rem;color:var(--color-text-muted);}
.rank-meta strong{color:var(--color-text);}
.rank-actions{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end;}

/* ---- Ranking podium (top3 visual) -----------------------------------------*/
.podium{display:grid;grid-template-columns:1fr 1.18fr 1fr;gap:20px;align-items:end;margin-bottom:36px;}
.podium-card{
  position:relative;background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-lg);
  padding:30px 22px 26px;text-align:center;box-shadow:var(--shadow-sm);transition:transform .25s var(--ease),box-shadow .25s var(--ease);
}
.podium-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);}
.podium-card .pod-rank{
  position:absolute;top:-18px;left:50%;transform:translateX(-50%);width:40px;height:40px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;font-family:var(--font-display);font-weight:700;color:#fff;
  background:var(--gradient-brand);box-shadow:0 8px 18px -6px rgba(128,102,245,.5);
}
.podium-1{grid-column:2;padding-top:44px;padding-bottom:36px;border:1.5px solid var(--color-accent);box-shadow:var(--shadow-accent);transform:scale(1.04);}
.podium-1 .pod-rank{background:linear-gradient(135deg,#ffd76a,#e0a300);top:-20px;width:46px;height:46px;font-size:1.1rem;}
.podium-2{grid-column:1;}
.podium-3{grid-column:3;}
.podium-card .tool-logo{margin:0 auto 14px;}
.podium-card h3{font-size:1.1rem;}
.podium-card .tc-cat{display:block;margin-top:4px;}
.podium-card .tc-price{justify-content:center;margin-top:12px;font-size:.82rem;}
.podium-card .tc-actions{margin-top:16px;justify-content:center;}

/* Purpose grid */
.purpose-card{padding:28px 24px;text-align:left;}
.purpose-card .pc-icon{
  width:48px;height:48px;border-radius:13px;background:var(--color-accent-soft);color:var(--color-accent);
  display:flex;align-items:center;justify-content:center;font-size:1.35rem;margin-bottom:16px;
  transition:transform .25s var(--ease),background .25s var(--ease);
}
.purpose-card:hover .pc-icon{transform:scale(1.12) rotate(-4deg);background:var(--gradient-brand);color:#fff;}
.purpose-card h3{font-size:1.02rem;}
.purpose-card p{color:var(--color-text-muted);font-size:.86rem;margin-top:8px;}
.purpose-card .pc-link{display:inline-flex;align-items:center;gap:6px;margin-top:14px;color:var(--color-accent);font-weight:700;font-size:.84rem;transition:gap .2s;}
.purpose-card:hover .pc-link{gap:10px;}

/* ---- Category discovery (bento grid) --------------------------------------*/
.category-bento{display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:190px;gap:18px;}
.cat-tile{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;color:#fff;padding:22px;
  display:flex;flex-direction:column;justify-content:flex-end;background:var(--gradient-navy);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.cat-tile::before{content:"";position:absolute;inset:0;background:var(--cat-grad, var(--gradient-brand));opacity:.9;transition:opacity .3s;}
.cat-tile::after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 80% 0%, rgba(255,255,255,.28), transparent 55%);}
.cat-tile:hover{transform:translateY(-6px) scale(1.015);box-shadow:var(--shadow-lg);}
.cat-tile .ct-icon{position:relative;z-index:1;display:block;font-size:1.8rem;line-height:1;transition:transform .3s var(--ease);}
.cat-tile:hover .ct-icon{transform:translateY(-4px) scale(1.1);}
.cat-tile h3{position:relative;z-index:1;color:#fff;font-size:1.02rem;line-height:1.3;margin-top:10px;}
.cat-tile .ct-count{position:relative;z-index:1;display:block;font-size:.76rem;line-height:1.3;color:rgba(255,255,255,.85);margin-top:4px;}
.cat-tile .ct-arrow{position:relative;z-index:1;margin-top:12px;display:inline-flex;align-items:center;gap:6px;font-size:.78rem;line-height:1.3;font-weight:700;color:#fff;transform:translateX(0);transition:transform .25s var(--ease);}
.cat-tile:hover .ct-arrow{transform:translateX(6px);}
.cat-tile.big{grid-column:span 2;grid-row:span 2;}
.cat-tile.wide{grid-column:span 2;}

/* Article cards */
.article-card{overflow:hidden;}
.article-card .ac-thumb{
  height:160px;background:var(--gradient-navy);display:flex;align-items:center;justify-content:center;
  color:#fff;font-family:var(--font-display);font-weight:700;font-size:.95rem;padding:0 20px;text-align:center;
  position:relative;overflow:hidden;transition:transform .4s var(--ease);
}
.article-card:hover .ac-thumb{transform:scale(1.05);}
.article-card .ac-thumb::after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 75% 10%, rgba(255,255,255,.22), transparent 55%);}
.article-card .ac-body{padding:22px 24px 26px;}
.article-card .ac-tag{font-size:.72rem;color:var(--color-navy-600);font-weight:700;}
.article-card h3{font-size:1.02rem;margin-top:10px;line-height:1.5;}
.article-card p{color:var(--color-text-muted);font-size:.85rem;margin-top:8px;}
.article-card .ac-meta{display:flex;justify-content:space-between;margin-top:16px;font-size:.76rem;color:var(--color-text-faint);}

.feature-main{display:grid;grid-template-columns:1.1fr .9fr;gap:0;overflow:hidden;}
.feature-main .fm-visual{background:var(--gradient-navy);min-height:260px;display:flex;align-items:center;justify-content:center;color:#fff;font-family:var(--font-display);font-weight:700;font-size:1.3rem;text-align:center;padding:30px;position:relative;overflow:hidden;}
.feature-main .fm-visual::after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 80% 0%, rgba(255,255,255,.25), transparent 55%);}
.feature-main .fm-body{padding:36px;display:flex;flex-direction:column;justify-content:center;}
.feature-main .fm-body .ac-tag{font-size:.78rem;}
.feature-main .fm-body h3{font-size:1.4rem;margin-top:12px;}
.feature-main .fm-body p{color:var(--color-text-muted);margin-top:12px;}
.feature-main .fm-body .btn{margin-top:20px;align-self:flex-start;}

/* ---- Tabs / filters ------------------------------------------------------*/
.tab-row{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:30px;}
.tab-btn{
  padding:10px 20px;border-radius:var(--radius-full);border:1px solid var(--color-border);
  background:#fff;color:var(--color-text-muted);font-weight:700;font-size:.85rem;cursor:pointer;
  transition:all .22s var(--ease);
}
.tab-btn:hover{border-color:var(--color-accent);color:var(--color-accent);}
.tab-btn.active{background:var(--gradient-brand);border-color:transparent;color:#fff;box-shadow:0 8px 20px -8px rgba(128,102,245,.5);}

@keyframes tabFade{from{opacity:0;transform:translateY(10px);}to{opacity:1;transform:translateY(0);}}
.tab-fade-in{animation:tabFade .4s var(--ease-soft);}

/* mobile horizontal scroll row (categories, etc.) */
.hscroll{display:flex;gap:12px;overflow-x:auto;padding-bottom:6px;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;}
.hscroll::-webkit-scrollbar{height:5px;}
.hscroll::-webkit-scrollbar-thumb{background:var(--color-border);border-radius:4px;}
.hscroll > *{scroll-snap-align:start;flex:none;}

/* ---- Tables ----------------------------------------------------------------*/
.table-wrap{overflow-x:auto;border-radius:var(--radius-md);border:1px solid var(--color-border);-webkit-overflow-scrolling:touch;}
.compare-table{min-width:720px;}
.compare-table th,.compare-table td{padding:17px 18px;text-align:left;border-bottom:1px solid var(--color-border);font-size:.88rem;}
.compare-table thead th{background:var(--color-bg-soft);font-weight:700;color:var(--color-text);}
.compare-table tbody tr:last-child td{border-bottom:none;}
.compare-table tbody tr{transition:background .18s;}
.compare-table tbody tr:hover{background:var(--color-accent-soft);}
.compare-table td.col-name{font-weight:700;}
.table-scroll-hint{display:none;font-size:.76rem;color:var(--color-text-faint);margin-bottom:8px;}

/* ---- Article typography ----------------------------------------------------*/
.article-body{max-width:760px;margin:0 auto;}
.article-body h2{font-size:1.5rem;margin-top:54px;padding-top:14px;border-top:1px solid var(--color-border);scroll-margin-top:100px;}
.article-body h2:first-child{border-top:none;margin-top:0;padding-top:0;}
.article-body h3{font-size:1.18rem;margin-top:32px;}
.article-body p{margin-top:16px;color:var(--color-text);}
.article-body ul,.article-body ol{margin-top:16px;padding-left:1.3em;}
.article-body li{margin-top:8px;}
.article-body a.in-link{color:var(--color-accent);font-weight:700;text-decoration:underline;text-underline-offset:3px;}
.article-body .lead-answer{
  background:var(--color-accent-soft);border-left:4px solid var(--color-accent);
  padding:22px 24px;border-radius:0 var(--radius-md) var(--radius-md) 0;margin-top:24px;font-weight:600;
}
.article-head{max-width:760px;margin:0 auto 40px;}
.article-head .cat-badge{color:var(--color-accent-2);font-weight:700;font-size:.8rem;}
.article-head h1{font-size:clamp(1.6rem,3.6vw,2.3rem);margin-top:14px;line-height:1.4;}
.article-head .meta-row{display:flex;gap:16px;flex-wrap:wrap;margin-top:18px;font-size:.82rem;color:var(--color-text-faint);align-items:center;}
.author-chip{display:flex;align-items:center;gap:8px;}
.author-avatar{width:28px;height:28px;border-radius:50%;background:var(--gradient-brand);display:flex;align-items:center;justify-content:center;color:#fff;font-size:.7rem;font-weight:700;}
.pr-badge{
  display:inline-flex;align-items:center;gap:6px;background:#fff6e5;color:#9a6b00;
  font-size:.72rem;font-weight:700;padding:5px 11px;border-radius:var(--radius-full);border:1px solid #f0dca8;
}
.toc{background:var(--color-bg-soft);border-radius:var(--radius-md);padding:22px 26px;margin:32px 0 0;max-width:760px;margin-left:auto;margin-right:auto;}
.toc p.toc-title{font-weight:700;font-size:.86rem;}
.toc ol{margin-top:10px;padding-left:1.2em;}
.toc a{font-size:.88rem;color:var(--color-text-muted);}
.toc a:hover{color:var(--color-accent);}

/* Pros / Cons */
.pc-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:18px;}
.pc-box{border-radius:var(--radius-md);padding:22px 24px;}
.pc-box.pros{background:#eefaf4;border:1px solid #cdeedd;}
.pc-box.cons{background:#fdf1f1;border:1px solid #f3d6d6;}
.pc-box h4{font-size:.92rem;display:flex;align-items:center;gap:8px;}
.pc-box ul{margin-top:12px;padding-left:1.1em;font-size:.88rem;}
.pc-box li{margin-top:7px;}

/* CTA box (dynamic, injected via JS from ai_tools table) */
.cta-box{
  background:var(--color-navy);background-image:var(--gradient-navy-radial);color:#fff;border-radius:var(--radius-lg);
  padding:34px;margin-top:36px;display:flex;align-items:center;gap:24px;flex-wrap:wrap;
}
.cta-box .cta-logo{width:56px;height:56px;border-radius:15px;flex:none;}
.cta-box .cta-info{flex:1;min-width:220px;}
.cta-box .cta-info h4{color:#fff;font-size:1.05rem;}
.cta-box .cta-info p{color:#b7bdd6;font-size:.85rem;margin-top:6px;}
.cta-box .cta-btns{display:flex;gap:10px;flex-wrap:wrap;}
.inline-cta{
  border:1px solid var(--color-border);border-radius:var(--radius-md);padding:26px;margin:28px 0;
  background:var(--color-bg-soft);max-width:760px;margin-left:auto;margin-right:auto;
}
.inline-cta .flex-between{flex-wrap:wrap;gap:16px;}

/* FAQ */
.faq-item{border-bottom:1px solid var(--color-border);padding:20px 0;}
.faq-q{display:flex;justify-content:space-between;align-items:center;font-weight:700;cursor:pointer;gap:16px;}
.faq-q .q-icon{flex:none;font-size:1.2rem;color:var(--color-accent);transition:transform .25s var(--ease);}
.faq-item.open .q-icon{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease);color:var(--color-text-muted);font-size:.92rem;}
.faq-item.open .faq-a{max-height:600px;padding-top:12px;}

/* ---- HOW TO CHOOSE steps --------------------------------------------------*/
.step-row{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;position:relative;}
.step-row::before{content:"";position:absolute;top:34px;left:12%;right:12%;height:2px;background:linear-gradient(90deg,var(--color-border),var(--color-accent),var(--color-border));z-index:0;}
.step-card{position:relative;z-index:1;text-align:center;}
.step-num{
  width:68px;height:68px;border-radius:50%;background:#fff;border:2px solid var(--color-accent);color:var(--color-accent);
  display:flex;align-items:center;justify-content:center;margin:0 auto 18px;font-family:var(--font-display);font-weight:700;font-size:1.3rem;
  box-shadow:0 10px 24px -10px rgba(128,102,245,.4);transition:transform .25s var(--ease);
}
.step-card:hover .step-num{transform:scale(1.08);background:var(--gradient-brand);color:#fff;border-color:transparent;}
.step-card h3{font-size:1.05rem;}
.step-card p{color:var(--color-text-muted);font-size:.9rem;margin-top:10px;}

/* ---- Newsletter / Contact CTA band ---------------------------------------*/
.cta-band{
  background:var(--gradient-brand);border-radius:var(--radius-lg);padding:50px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;position:relative;overflow:hidden;
}
.cta-band::after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 85% -20%, rgba(255,255,255,.3), transparent 55%);}
.cta-band > *{position:relative;z-index:1;}
.cta-band h3{color:#fff;font-size:1.4rem;}
.cta-band p{color:rgba(255,255,255,.88);margin-top:8px;}
.cta-band .btn-outline{border-color:rgba(255,255,255,.5);color:#fff;}
.cta-band .btn-outline:hover{background:rgba(255,255,255,.15);border-color:#fff;}

/* Final CTA (navy, full width section) --------------------------------------*/
.final-cta{text-align:center;}
.final-cta h2{font-size:clamp(2rem,4.4vw,3rem);color:#fff;}
.final-cta p{color:#c3c7df;margin-top:16px;font-size:1.08rem;}
.final-cta .hero-actions{justify-content:center;}

/* ---- Forms -----------------------------------------------------------------*/
.form-group{margin-bottom:18px;}
.form-group label{display:block;font-weight:700;font-size:.86rem;margin-bottom:8px;}
.form-group input,.form-group textarea,.form-group select{
  width:100%;padding:13px 16px;border:1px solid var(--color-border);border-radius:var(--radius-sm);
  background:#fff;transition:border-color .2s,box-shadow .2s;
}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:var(--color-accent);box-shadow:0 0 0 3px rgba(128,102,245,.12);}
.form-note{font-size:.78rem;color:var(--color-text-faint);margin-top:6px;}

/* ---- Footer -----------------------------------------------------------------*/
.site-footer{background:var(--color-navy);color:#c3c7df;padding:68px 0 30px;position:relative;overflow:hidden;}
.site-footer::before{content:"";position:absolute;inset:0;background-image:var(--gradient-navy-radial);opacity:.5;pointer-events:none;}
.site-footer .container{position:relative;}
.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:32px;}
.footer-brand .brand{color:#fff;}
.footer-brand p{margin-top:14px;font-size:.86rem;color:#9aa0c0;max-width:280px;}
.footer-col h4{color:#fff;font-size:.86rem;margin-bottom:16px;}
.footer-col ul li{margin-top:10px;}
.footer-col a{font-size:.86rem;color:#9aa0c0;transition:color .18s;}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:.78rem;color:#7d83a3;
}

/* ---- Misc badges / disclaimers ---------------------------------------------*/
.disclosure-bar{background:#fff6e5;border-bottom:1px solid #f0dca8;color:#7a5600;font-size:.78rem;text-align:center;padding:9px 16px;}
.disclosure-bar a{text-decoration:underline;font-weight:700;}
.skip-link{position:absolute;left:-999px;top:0;background:#fff;padding:10px 16px;z-index:999;}
.skip-link:focus{left:10px;top:10px;}

/* ---- Reveal animation (multiple variants) --------------------------------*/
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease-soft),transform .7s var(--ease-soft);}
.reveal.in{opacity:1;transform:translateY(0);}
.reveal-left{opacity:0;transform:translateX(-32px);transition:opacity .7s var(--ease-soft),transform .7s var(--ease-soft);}
.reveal-left.in{opacity:1;transform:translateX(0);}
.reveal-right{opacity:0;transform:translateX(32px);transition:opacity .7s var(--ease-soft),transform .7s var(--ease-soft);}
.reveal-right.in{opacity:1;transform:translateX(0);}
.reveal-scale{opacity:0;transform:scale(.92);transition:opacity .6s var(--ease-soft),transform .6s var(--ease-soft);}
.reveal-scale.in{opacity:1;transform:scale(1);}
.reveal-clip{clip-path:inset(0 0 100% 0);opacity:0;transition:clip-path .8s var(--ease-soft),opacity .3s;}
.reveal-clip.in{clip-path:inset(0 0 0% 0);opacity:1;}
[class*="reveal"][style*="--d"]{transition-delay:var(--d);}

/* stagger helper via inline style --delay */
.reveal,.reveal-left,.reveal-right,.reveal-scale{transition-delay:var(--rd,0s);}

/* ---- Responsive ---------------------------------------------------------*/
@media (max-width:1080px){
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .category-bento{grid-template-columns:repeat(2,1fr);}
  .cat-tile.big{grid-column:span 2;grid-row:span 1;}
  .feature-main{grid-template-columns:1fr;}
}
@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr;}
  .hero-visual{height:auto;margin-top:36px;display:flex;flex-direction:column;gap:14px;}
  .hv-core{display:none;}
  .hv-panel{position:static;width:100% !important;animation-name:panelIn !important;animation-duration:.9s !important;animation-iteration-count:1 !important;}
  .main-nav{display:none;}
  .nav-toggle{display:flex;}
  .pc-grid{grid-template-columns:1fr;}
  .podium{grid-template-columns:1fr;gap:16px;}
  .podium-1,.podium-2,.podium-3{grid-column:1;}
  .podium-1{order:-1;transform:none;}
  .step-row{grid-template-columns:1fr;gap:36px;}
  .step-row::before{display:none;}
}
@media (max-width:720px){
  .section{padding:64px 0;}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr;}
  .rank-item{grid-template-columns:1fr;text-align:left;}
  .rank-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-band{flex-direction:column;align-items:flex-start;}
  .hero{padding:72px 0 80px;}
  .cta-box{flex-direction:column;align-items:flex-start;}
  .search-shell{padding:24px;}
  .ai-search-box{flex-direction:column;}
  .category-bento{grid-template-columns:1fr 1fr;grid-auto-rows:170px;}
  .cat-tile.big{grid-column:span 2;grid-row:span 1;}
  .table-scroll-hint{display:block;}
  .back-to-top{right:14px;bottom:14px;width:44px;height:44px;}
  :root{--container-pad:18px;}
}
@media (prefers-reduced-motion: reduce){
  *{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important;}
}