/* ==========================================================================
   NIBROOK International — V14 stylesheet
   PhD-first hierarchy · report showcase · free Research Library showcase
   Mobile-first. Breakpoints: 560 / 640 / 768 / 900 / 960 / 1024 / 1180
   ========================================================================== */

/* 1. Tokens */
:root{
  --navy:#0b1f4b; --navy-2:#123a8c; --ink:#16263d; --blue:#1459e8; --blue-dark:#0f46b8;
  --orange:#f15a24; --orange-dark:#d94a16; --green:#13a85a;
  --muted:#566a82; --line:#e1e8f0; --soft:#f4f7fb;
  --r-sm:10px; --r-md:16px; --r-lg:24px;
  --shadow-sm:0 6px 18px rgba(18,54,93,.06);
  --shadow-md:0 14px 34px rgba(18,54,93,.10);
  --shadow-lg:0 26px 60px rgba(14,44,96,.16);
  --gutter:clamp(16px,4vw,32px);
  --section-y:clamp(56px,8vw,104px);
  --header-h:68px;
  --sans:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --serif:"Source Serif 4",Georgia,"Times New Roman",serif;
  --font:var(--sans);
}

/* 2. Base */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{margin:0;font-family:var(--sans);font-size:1rem;line-height:1.65;color:var(--ink);background:#fff;overflow-x:hidden;-webkit-font-smoothing:antialiased}
img,svg{max-width:100%}
img{height:auto;display:block}
a{color:inherit}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
h1,h2,h3,h4,p,ul,ol{margin-top:0}
h1,h2,h3{text-wrap:balance}
section[id],main[id]{scroll-margin-top:calc(var(--header-h) + 12px)}
:focus-visible{outline:3px solid rgba(20,89,232,.45);outline-offset:2px;border-radius:6px}
.wrap{width:min(1200px,100% - 2*var(--gutter));margin-inline:auto}
.section{padding-block:var(--section-y)}
.alt{background:var(--soft)}
.ic{width:1.25em;height:1.25em;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex:none}

h1,h2{font-family:var(--serif);font-weight:600;color:var(--navy)}
h1{font-size:clamp(2.05rem,1rem + 3.6vw,3.55rem);line-height:1.08;letter-spacing:-.02em;margin-bottom:1.1rem}
h1 em,.hl{font-style:normal;color:var(--blue)}
h2{font-size:clamp(1.75rem,1.1rem + 2vw,2.6rem);line-height:1.15;letter-spacing:-.015em;margin-bottom:1rem}
h3{font-size:1.1rem;line-height:1.3;color:#102b4c;margin-bottom:.5rem;font-weight:700}
.eyebrow{display:flex;align-items:center;gap:.6rem;font-size:.76rem;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--orange);margin-bottom:.8rem}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:currentColor;flex:none}
.section-head.center .eyebrow{justify-content:center}
.eyebrow.light{color:#ffb08f}
.lead{font-size:clamp(1rem,.95rem + .25vw,1.125rem);color:var(--muted);max-width:62ch}
.section-head{max-width:780px;margin-bottom:clamp(28px,4vw,44px)}
.section-head.center{text-align:center;margin-inline:auto}
.section-head.center .lead{margin-inline:auto}
.section-head p{margin-bottom:0}

.btn{position:relative;overflow:hidden;display:inline-flex;align-items:center;justify-content:center;gap:.5rem;min-height:50px;padding:.75rem 1.5rem;border:1px solid transparent;border-radius:12px;background:var(--orange);color:#fff;font-weight:700;font-size:1rem;text-decoration:none;text-align:center;box-shadow:0 8px 20px rgba(241,90,36,.28);transition:background .2s,transform .2s,box-shadow .2s}
.btn::after{content:"";position:absolute;inset:0;background:linear-gradient(110deg,transparent 30%,rgba(255,255,255,.38) 50%,transparent 70%);transform:translateX(-130%);pointer-events:none}
.btn:hover{background:var(--orange-dark);transform:translateY(-2px);box-shadow:0 12px 26px rgba(241,90,36,.34)}
.btn:hover::after{transform:translateX(130%);transition:transform .8s ease}
.btn .ic{transition:transform .2s}
.btn:hover .ic{transform:translateX(3px)}
.btn.small{min-height:42px;padding:.55rem 1.05rem;font-size:.9rem;white-space:nowrap;box-shadow:none}
.btn.ghost{background:#fff;color:var(--navy);border-color:#c3d2e6;box-shadow:none}
.btn.ghost:hover{background:#f3f7fd;box-shadow:none}
.btn.ghost-light{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.38);box-shadow:none}
.btn.ghost-light:hover{background:rgba(255,255,255,.16);box-shadow:none}
.btn.whatsapp{background:var(--green);box-shadow:0 8px 20px rgba(19,168,90,.28)}
.btn.whatsapp:hover{background:#0f9150}
.btn.block{width:100%}
.free-tag{display:inline-block;margin-right:.1rem;padding:.14rem .45rem;border-radius:6px;background:var(--green);color:#fff;font-size:.66rem;font-weight:800;letter-spacing:.08em}
.actions{display:grid;gap:12px;margin-bottom:1.4rem}
@media (min-width:560px){.actions{display:flex;flex-wrap:wrap}}

.scroll-progress{position:fixed;top:0;left:0;z-index:100;width:100%;height:3px;transform-origin:0 50%;transform:scaleX(var(--p,0));background:linear-gradient(90deg,var(--orange),var(--blue));pointer-events:none}

/* 3. Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid #e8edf2;transition:box-shadow .3s}
.site-header.is-scrolled{box-shadow:0 8px 28px rgba(12,35,83,.08)}
.nav{height:var(--header-h);display:flex;align-items:center;gap:16px}
.brand{display:flex;align-items:center;flex:none}
.brand img{height:42px;width:auto}
.nav-links,.nav-cta{display:none}
.menu-toggle{margin-left:auto;display:grid;place-items:center;width:44px;height:44px;border:1px solid #dce7f4;border-radius:12px;background:#f5f8ff;color:var(--navy)}
.menu-toggle .ic{width:22px;height:22px}
.menu-toggle .ic-close{display:none}
.menu-open .menu-toggle .ic-menu{display:none}
.menu-open .menu-toggle .ic-close{display:block}
.mobile-menu{display:none;position:absolute;left:0;right:0;top:var(--header-h);background:#fff;border-bottom:1px solid #dce7f4;box-shadow:0 22px 40px rgba(10,42,82,.14);padding:8px var(--gutter) 20px;max-height:calc(100dvh - var(--header-h));overflow-y:auto}
.menu-open .mobile-menu{display:block;animation:menuIn .25s ease}
.mobile-menu a:not(.btn){display:block;padding:14px 4px;border-bottom:1px solid #eef3f8;text-decoration:none;font-weight:600}
.mobile-menu .btn{margin-top:16px;width:100%}
@media (min-width:1180px){
  :root{--header-h:76px}
  .nav{gap:24px}
  .nav-links{display:flex;gap:clamp(14px,1.5vw,24px);margin-left:auto}
  .nav-links a{position:relative;font-size:.88rem;font-weight:600;text-decoration:none;white-space:nowrap;padding:6px 0}
  .nav-links a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--blue);transform:scaleX(0);transition:transform .25s}
  .nav-links a:hover{color:var(--blue)}
  .nav-links a:hover::after{transform:scaleX(1)}
  .nav-cta{display:inline-flex}
  .menu-toggle,.mobile-menu{display:none!important}
  .brand img{height:46px}
}

/* 4. Hero (PhD first) */
.hero{position:relative;overflow:hidden;background:linear-gradient(180deg,#f7faff 0%,#edf3ff 100%);padding-block:clamp(36px,6vw,84px) clamp(40px,6vw,76px)}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(rgba(20,89,232,.10) 1px,transparent 1.2px) 0 0/24px 24px;-webkit-mask:linear-gradient(180deg,#000,transparent 85%);mask:linear-gradient(180deg,#000,transparent 85%);pointer-events:none}
.hero-bg .blob{position:absolute;border-radius:50%;filter:blur(64px);opacity:.6;pointer-events:none}
.hero-bg .b1{width:420px;height:420px;background:#cddfff;top:-150px;right:-90px;animation:drift1 16s ease-in-out infinite}
.hero-bg .b2{width:320px;height:320px;background:#ffdccb;bottom:-130px;left:-90px;animation:drift2 18s ease-in-out infinite}
.hero-grid{position:relative;display:grid;gap:clamp(32px,5vw,64px);align-items:center}
.pill{display:inline-flex;align-items:center;gap:.6rem;max-width:100%;padding:.42rem .95rem;margin-bottom:1.2rem;border:1px solid #cfdcf3;border-radius:999px;background:#fff;box-shadow:0 4px 14px rgba(20,60,120,.06);font-size:.76rem;font-weight:700;line-height:1.3;color:#23406b}
.pulse{position:relative;flex:none;width:8px;height:8px;border-radius:50%;background:var(--green)}
.pulse::after{content:"";position:absolute;inset:-4px;border-radius:50%;border:2px solid var(--green);opacity:0;animation:pulse 2s ease-out infinite}
.hero .lead{margin-bottom:1.7rem}
.hero .lead strong{color:var(--navy);font-weight:700}
.trust{display:flex;flex-wrap:wrap;gap:8px 22px;padding:0;margin:0;list-style:none;font-size:.9rem;color:#2b4260}
.trust li{display:flex;align-items:center;gap:.4rem}
.trust .ic{color:var(--green);width:1.1em;height:1.1em;stroke-width:2.4}
@media (min-width:960px){.hero-grid{grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr)}}

.hero-visual{position:relative;width:100%;max-width:520px;margin-inline:auto;padding-bottom:6px}
.hv-card{width:100%;padding:18px 20px 20px;border:1px solid #d9e5f6;border-radius:22px;background:#fff;box-shadow:var(--shadow-lg);animation:floatY 7s ease-in-out infinite}
.hv-top{display:flex;align-items:center;gap:12px;margin-bottom:16px;font-size:.9rem;color:var(--navy)}
.dots{display:inline-flex;gap:5px}
.dots i{width:9px;height:9px;border-radius:50%;background:#e4e9f1}
.dots i:nth-child(1){background:#ff9a85}.dots i:nth-child(2){background:#ffd36b}.dots i:nth-child(3){background:#7ad9a0}
.hv-steps{list-style:none;margin:0 0 18px;padding:0;display:grid;gap:11px}
.hv-steps li{display:flex;align-items:center;gap:12px;font-size:.92rem;font-weight:600;color:#42566f}
.hv-steps i{display:grid;place-items:center;flex:none;width:26px;height:26px;border-radius:50%;background:#eef2f8;color:#6b7d95;font-size:.78rem;font-style:normal;font-weight:700}
.hv-steps .ic{width:14px;height:14px;stroke-width:3}
.hv-steps .done i{background:var(--green);color:#fff}
.hv-steps .now{color:var(--navy)}
.hv-steps .now i{background:var(--blue);color:#fff;box-shadow:0 0 0 5px rgba(20,89,232,.16);animation:ringPulse 2.4s ease-in-out infinite}
.hv-bar{height:8px;border-radius:99px;background:#e9eff8;overflow:hidden}
.hv-bar span{display:block;height:100%;width:56%;border-radius:inherit;background:linear-gradient(90deg,var(--blue),var(--orange));animation:grow 2.2s cubic-bezier(.2,.8,.2,1) both}
.hv-card small{display:block;margin-top:9px;color:var(--muted);font-size:.8rem}
.hv-chip{display:flex;align-items:center;gap:10px;margin-top:12px;padding:10px 14px;border:1px solid #d9e5f6;border-radius:14px;background:#fff;box-shadow:var(--shadow-md);font-size:.8rem;line-height:1.25}
.hv-chip b{display:block;color:var(--navy);font-size:.86rem}
.hv-chip span{color:var(--muted)}
.hv-chip>.ic{width:32px;height:32px;padding:7px;border-radius:10px;background:#eaf9f1;color:var(--green)}
.hv-free>.ic{background:#fff1e9;color:var(--orange)}
.mini-ring{width:38px;height:38px;flex:none;transform:rotate(-90deg)}
.mini-ring circle{fill:none;stroke:#e6edf8;stroke-width:5}
.mini-ring .val{stroke:var(--orange);stroke-linecap:round;stroke-dasharray:106.8;stroke-dashoffset:calc(106.8 - 106.8 * var(--v) / 100)}
@media (min-width:560px){
  .hero-visual{padding:14px 0 54px}
  .hv-card{width:86%}
  .hv-chip{position:absolute;margin:0}
  .hv-sim{right:0;top:0;animation:floatY 6s ease-in-out -1s infinite}
  .hv-ai{right:0;top:46%;animation:floatY 7s ease-in-out -2s infinite}
  .hv-free{left:6%;bottom:0;animation:floatY 8s ease-in-out -3s infinite}
}

/* 5. Proof strip */
.proof{background:#fff;padding-block:0 clamp(24px,4vw,40px);position:relative;z-index:1}
.proof-grid{display:grid;gap:14px;grid-template-columns:repeat(2,minmax(0,1fr));margin-top:clamp(-28px,-3vw,-20px)}
.proof-card{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:10px;padding:20px 12px;min-height:150px;background:#fff;border:1px solid #e3ebf5;border-radius:var(--r-md);box-shadow:var(--shadow-md);transition:transform .25s,box-shadow .25s}
.proof-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.proof-card:last-child{grid-column:1/-1}
.proof-icon{display:grid;place-items:center;width:46px;height:46px;border-radius:14px}
.proof-icon .ic{width:24px;height:24px}
.icon-blue{background:#eaf3ff;color:var(--blue)}.icon-orange{background:#fff1e9;color:#ef5b2a}.icon-green{background:#eaf9f1;color:#15945d}.icon-purple{background:#f1ecff;color:#7655c7}
.proof-card strong{display:block;font-size:clamp(1.25rem,1.05rem + .8vw,1.6rem);line-height:1.1;font-weight:800;color:var(--blue);white-space:nowrap}
.proof-card .label{display:block;margin-top:6px;font-size:.85rem;line-height:1.3;color:var(--muted)}
@media (min-width:700px){
  .proof-grid{grid-template-columns:repeat(6,minmax(0,1fr))}
  .proof-card{grid-column:span 2}
  .proof-card:nth-child(4){grid-column:2/span 2}
  .proof-card:nth-child(5),.proof-card:last-child{grid-column:span 2}
}
@media (min-width:1024px){
  .proof-grid{grid-template-columns:repeat(5,minmax(0,1fr))}
  .proof-card,.proof-card:nth-child(4),.proof-card:nth-child(5),.proof-card:last-child{grid-column:auto}
}

/* 6. PhD priority section */
.phd-priority{position:relative;overflow:hidden;margin-top:clamp(24px,4vw,40px);background:linear-gradient(135deg,#0a1b43 0%,#10316f 55%,#1647b8 100%);color:#fff}
.phd-deco{position:absolute;inset:0;pointer-events:none;background:radial-gradient(620px 320px at 92% 0,rgba(255,255,255,.13),transparent 60%),radial-gradient(520px 320px at 0 100%,rgba(241,90,36,.2),transparent 60%),radial-gradient(rgba(255,255,255,.07) 1px,transparent 1.2px) 0 0/26px 26px}
.phd-priority>.wrap{position:relative}
.phd-priority h2{color:#fff}
.phd-priority .hl{color:#ffb08f}
.phd-top{display:grid;gap:clamp(28px,4vw,52px);align-items:start}
.phd-intro p{color:rgba(255,255,255,.84);max-width:54ch;margin-bottom:1.5rem}
.phd-points{list-style:none;padding:0;margin:.6rem 0 0;display:grid;gap:9px;font-size:.92rem;color:rgba(255,255,255,.92)}
.phd-points li{display:flex;align-items:center;gap:9px}
.phd-points .ic{color:#6ee7a8;stroke-width:2.6;width:1.15em;height:1.15em}
.phd-stages{display:grid;gap:14px;grid-template-columns:1fr}
.ps{padding:22px;border-radius:var(--r-md);background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);transition:transform .3s,background .3s,border-color .3s}
.ps:hover{transform:translateY(-5px);background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.3)}
.ps b{display:block;margin-bottom:6px;font-size:.8rem;letter-spacing:.12em;color:#ffb08f}
.ps h3{color:#fff;font-size:1.08rem;margin-bottom:.8rem}
.ps ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.ps li{display:flex;gap:8px;font-size:.88rem;line-height:1.4;color:rgba(255,255,255,.86)}
.ps li .ic{width:1em;height:1em;margin-top:.22em;color:#6ee7a8;stroke-width:2.8}
@media (min-width:640px){.phd-stages{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.phd-top{grid-template-columns:minmax(0,.9fr) minmax(0,1.3fr)}}

.pj{list-style:none;margin:clamp(36px,5vw,60px) 0 0;padding:0;display:grid;position:relative}
.pj li{position:relative;display:flex;align-items:center;gap:14px;padding:10px 0;font-weight:700;font-size:.95rem;color:#fff}
.pj li i{position:relative;z-index:1;display:grid;place-items:center;flex:none;width:34px;height:34px;border-radius:50%;background:#fff;color:var(--navy);font-size:.85rem;font-style:normal;font-weight:800;box-shadow:0 0 0 5px rgba(255,255,255,.12)}
.pj li+li::before{content:"";position:absolute;left:16px;top:-17px;width:2px;height:34px;background:rgba(255,255,255,.3)}
.pj li:last-child i{background:var(--orange);color:#fff}
@media (min-width:900px){
  .pj{grid-template-columns:repeat(7,minmax(0,1fr))}
  .pj li{flex-direction:column;gap:12px;padding:0;text-align:center;font-size:.9rem}
  .pj li+li::before{left:-50%;top:16px;width:100%;height:2px}
}

/* 7. AI & plagiarism report showcase */
.reports{background:linear-gradient(180deg,#fff 0%,#f5f9ff 100%)}
.reports-grid{display:grid;gap:clamp(32px,5vw,64px);align-items:center}
.rep-list{list-style:none;padding:0;margin:1.5rem 0 1.7rem;display:grid;gap:16px}
.rep-list li{display:flex;gap:14px}
.rep-list li>span{display:grid;place-items:center;flex:none;width:44px;height:44px;border-radius:12px;background:#eaf2ff;color:var(--blue)}
.rep-list b{display:block;color:var(--navy)}
.rep-list p{margin:2px 0 0;font-size:.92rem;color:var(--muted)}
.fine{margin:1rem 0 0;font-size:.8rem;line-height:1.5;color:#74839a}
.rm{margin:0;overflow:hidden;border:1px solid #d6e2f4;border-radius:22px;background:#fff;box-shadow:0 28px 64px rgba(20,60,120,.15)}
.rm-bar{display:flex;align-items:center;gap:12px;padding:12px 16px;background:#f3f7fd;border-bottom:1px solid #e3ebf6;font-size:.82rem;color:var(--navy)}
.rm-bar b{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rm-bar em{margin-left:auto;flex:none;padding:3px 9px;border-radius:99px;background:#fff1e9;color:var(--orange);font-size:.68rem;font-style:normal;font-weight:700}
.rm-body{display:grid}
.rm-doc{padding:20px;font-family:var(--serif);font-size:.95rem;line-height:1.8;color:#2a3a52}
.rm-doc h4{margin:0 0 12px;font:700 .72rem var(--sans);letter-spacing:.1em;text-transform:uppercase;color:#7a8aa3}
.rm-doc p{margin:0 0 12px}
.rm mark{color:inherit;padding:1px 0;border-radius:3px;background-repeat:no-repeat;background-position:0 0;background-size:100% 100%;-webkit-box-decoration-break:clone;box-decoration-break:clone}
.m-sim{background-image:linear-gradient(#ffe38a,#ffe38a)}
.m-ai{background-image:linear-gradient(#ffc4d2,#ffc4d2)}
.m-cite{background-image:linear-gradient(#c0ebd2,#c0ebd2)}
.js .rm mark{background-size:0 100%;transition:background-size 1.1s cubic-bezier(.3,.7,.2,1)}
.js .rm.in mark{background-size:100% 100%}
.js .rm.in mark:nth-of-type(2){transition-delay:.45s}
.js .rm.in mark:nth-of-type(3){transition-delay:.9s}
.js .rm.in mark:nth-of-type(4){transition-delay:1.35s}
.rm-legend{display:flex;flex-wrap:wrap;gap:6px 16px;margin-top:14px;padding-top:12px;border-top:1px dashed #dbe5f3;font:600 .74rem var(--sans);color:#5b6d86}
.rm-legend span{display:inline-flex;align-items:center;gap:6px}
.rm-legend i{width:12px;height:12px;border-radius:3px}
.l-sim{background:#ffe38a}.l-ai{background:#ffc4d2}.l-cite{background:#c0ebd2}
.rm-side{padding:20px;background:#fafcff;border-top:1px solid #e8eff8}
.rm-rings{display:flex;gap:16px;margin-bottom:20px}
.ring{position:relative;width:84px;text-align:center}
.ring svg{display:block;width:84px;height:84px;transform:rotate(-90deg)}
.ring circle{fill:none;stroke:#e6edf8;stroke-width:8}
.ring .val{stroke:#f5a623;stroke-linecap:round;stroke-dasharray:201;stroke-dashoffset:calc(201 - 201 * var(--v) / 100);transition:stroke-dashoffset 1.8s cubic-bezier(.2,.8,.2,1)}
.ring.ai .val{stroke:#e5486e}
.js .rm:not(.in) .ring .val{stroke-dashoffset:201}
.ring b{position:absolute;left:0;right:0;top:27px;font-size:1.15rem;color:var(--navy)}
.ring small{display:block;margin-top:5px;font-size:.72rem;color:var(--muted)}
.rm-src{list-style:none;margin:0;padding:0}
.rm-src li{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:5px 8px;margin-bottom:12px;font-size:.78rem;color:#4a5d77}
.rm-src em{font-style:normal;font-weight:700;color:var(--navy)}
.rm-src i{grid-column:1/-1;height:6px;border-radius:99px;background:linear-gradient(90deg,#f5a623 var(--w),#edf1f7 var(--w))}
.rm figcaption{padding:10px 16px;border-top:1px solid #e8eff8;font-size:.74rem;color:#7b8aa0}
@media (min-width:640px){.rm-body{grid-template-columns:minmax(0,1.55fr) minmax(190px,.8fr)}.rm-side{border-top:0;border-left:1px solid #e8eff8}}
@media (min-width:960px){.reports-grid{grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr)}}

/* 8. Free Research Library showcase */
.library{background:linear-gradient(180deg,#f6f9ff 0%,#fff 100%)}
.lib-box{position:relative;overflow:hidden;display:grid;gap:clamp(26px,4vw,52px);padding:clamp(22px,4vw,52px);border-radius:28px;background:linear-gradient(135deg,#0b1f4b 0%,#133a96 62%,#1b5cff 130%);color:#fff;box-shadow:0 32px 72px rgba(12,35,83,.3)}
.lib-glow{position:absolute;inset:0;pointer-events:none;background:radial-gradient(520px 300px at 88% 8%,rgba(255,255,255,.18),transparent 60%),radial-gradient(420px 280px at 4% 100%,rgba(241,90,36,.28),transparent 60%),radial-gradient(rgba(255,255,255,.08) 1px,transparent 1.2px) 0 0/22px 22px}
.lib-box>*:not(.lib-glow){position:relative;min-width:0}
.free-badge{display:inline-flex;flex-wrap:wrap;align-items:center;gap:.5rem;padding:.45rem .9rem;border:1px solid rgba(110,231,168,.5);border-radius:999px;background:rgba(19,168,90,.18);color:#8ff0bd;font-size:.74rem;font-weight:800;letter-spacing:.06em}
.free-badge .ic{width:1.2em;height:1.2em}
.lib-box h2{margin:1rem 0 .4rem;color:#fff;font-size:clamp(2rem,1.1rem + 3.2vw,3.3rem);line-height:1.05}
.lib-tag{margin-bottom:.9rem;font:600 clamp(1.05rem,1rem + .5vw,1.35rem)/1.35 var(--serif);color:#ffd2bd}
.lib-text{max-width:54ch;color:rgba(255,255,255,.84)}
.lib-chips{list-style:none;margin:1.2rem 0 1.7rem;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.lib-chips li{padding:6px 13px;border:1px solid rgba(255,255,255,.22);border-radius:99px;background:rgba(255,255,255,.1);font-size:.8rem;font-weight:600}
.lib-note{display:block;margin-top:2px;color:rgba(255,255,255,.66);font-size:.8rem}
.lib-ui{overflow:hidden;border-radius:18px;background:#fff;box-shadow:0 30px 60px rgba(0,0,0,.35);color:var(--ink);animation:floatY 8s ease-in-out infinite}
.lu-bar{display:flex;align-items:center;gap:12px;padding:10px 14px;background:#f3f7fd;border-bottom:1px solid #e3ebf6;font-size:.74rem;color:#5b6d86}
.lu-bar b{font-weight:600;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.lu-body{display:grid;grid-template-columns:46px minmax(0,1fr)}
.lu-side{display:grid;gap:8px;align-content:start;padding:12px 8px;background:#f6f9fd;border-right:1px solid #e3ebf6}
.lu-side i{display:grid;place-items:center;width:30px;height:30px;border-radius:9px;color:#6b7d95}
.lu-side i.on{background:var(--blue);color:#fff}
.lu-side .ic{width:16px;height:16px}
.lu-main{padding:14px;min-width:0}
.lu-search{display:flex;align-items:center;gap:8px;margin-bottom:12px;padding:10px 12px;border:1px solid #cfdcf0;border-radius:10px;font-size:.82rem;color:#2a3a52;overflow:hidden;white-space:nowrap}
.lu-search .ic{width:16px;height:16px;color:var(--blue)}
.lu-search span{overflow:hidden;text-overflow:ellipsis}
.lu-search span::after{content:"";display:inline-block;width:1px;height:1em;margin-left:2px;vertical-align:-2px;background:var(--blue);animation:caret 1s steps(1) infinite}
.lu-card{margin-bottom:10px;padding:11px 13px;border:1px solid #e3ebf6;border-radius:12px;background:#fff;animation:cardIn 7s ease-in-out infinite}
.lu-card.c2{animation-delay:.6s}.lu-card.c3{animation-delay:1.2s;margin-bottom:0}
.lu-card b{display:block;font-size:.82rem;line-height:1.35;color:var(--navy)}
.lu-card small{display:block;margin-top:2px;font-size:.7rem;color:#74849b}
.lu-card .tags{display:flex;gap:6px;margin-top:7px}
.lu-card .tags em{padding:2px 8px;border-radius:99px;background:#eaf2ff;color:var(--blue);font-size:.66rem;font-style:normal;font-weight:700}
@media (min-width:960px){.lib-box{grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);align-items:center}.lib-ui{transform:perspective(1400px) rotateY(-5deg) rotateX(1deg)}}
.src-marquee{margin-top:clamp(24px,4vw,36px);overflow:hidden;padding:4px 0;-webkit-mask:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);mask:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.mq-track{display:flex;width:max-content;animation:marq 30s linear infinite}
.mq-track>div{display:flex;gap:12px;padding-right:12px}
.mq-track span{white-space:nowrap;padding:9px 18px;border:1px solid #dce6f3;border-radius:99px;background:#fff;font-size:.86rem;font-weight:700;color:#294663;box-shadow:var(--shadow-sm)}
.lib-benefits{display:grid;gap:16px;grid-template-columns:1fr;margin-top:clamp(24px,4vw,36px)}
.lb{padding:24px;border:1px solid var(--line);border-radius:var(--r-md);background:#fff;box-shadow:var(--shadow-sm);transition:transform .3s,box-shadow .3s,border-color .3s}
.lb:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:#b9cde8}
.lb>span{display:grid;place-items:center;width:46px;height:46px;margin-bottom:16px;border-radius:14px;background:linear-gradient(145deg,#eaf3ff,#fff0e7);color:var(--blue)}
.lb>span .ic{width:23px;height:23px}
.lb p{margin:0;font-size:.92rem;color:var(--muted)}
@media (min-width:640px){.lib-benefits{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.lib-benefits{grid-template-columns:repeat(4,minmax(0,1fr))}}

/* 9. Services */
.cards{display:grid;gap:16px;grid-template-columns:1fr}
.cards article{position:relative;overflow:hidden;display:flex;flex-direction:column;padding:26px;border:1px solid var(--line);border-radius:var(--r-md);background:#fff;box-shadow:var(--shadow-sm);transition:transform .3s,box-shadow .3s,border-color .3s}
.cards article::before{content:"";position:absolute;left:0;top:0;height:3px;width:0;background:linear-gradient(90deg,var(--blue),var(--orange));transition:width .45s ease}
.cards article:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:#b7cae0}
.cards article:hover::before{width:100%}
.cards i{display:grid;place-items:center;width:42px;height:42px;margin-bottom:16px;border-radius:50%;background:#f1f6fd;font-style:normal;font-size:.8rem;font-weight:800;color:var(--orange)}
.cards p{color:var(--muted);margin-bottom:1.1rem}
.cards .featured{background:linear-gradient(145deg,var(--navy),var(--navy-2));border-color:transparent}
.cards .featured h3{color:#fff}
.cards .featured p{color:rgba(255,255,255,.82)}
.cards .featured i{background:rgba(255,255,255,.14);color:#ffb08f}
.cards .featured button{color:#ffb08f}
.cards .hot{background:linear-gradient(145deg,#fff8f3,#fff);border-color:#ffd2bd}
.cards button,.sample-body button{margin-top:auto;align-self:flex-start;display:inline-flex;align-items:center;gap:.35rem;padding:6px 0;border:0;background:none;color:var(--blue);font-weight:700;font-size:.95rem;transition:gap .2s}
.cards button:hover,.sample-body button:hover{gap:.65rem}
@media (min-width:640px){.cards{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.cards{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}}

/* 10. FAQ */
.faq{background:var(--soft)}
.faq-grid{display:grid;gap:clamp(24px,4vw,56px);align-items:start}
.faq-intro .lead{margin-bottom:1.4rem}
.faq-list{display:grid;gap:12px}
.faq-item{border:1px solid var(--line);border-radius:14px;background:#fff;transition:box-shadow .25s,border-color .25s}
.faq-item[open]{box-shadow:var(--shadow-md);border-color:#c5d6ee}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 20px;list-style:none;cursor:pointer;font-weight:700;line-height:1.4;color:var(--navy)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-ic{width:22px;height:22px;color:var(--blue);transition:transform .3s}
.faq-item[open] .faq-ic{transform:rotate(45deg)}
.faq-a{padding:0 20px 20px}
.faq-a p{margin:0;color:var(--muted)}
.faq-item[open] .faq-a{animation:faqIn .3s ease}
@media (min-width:900px){.faq-grid{grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr)}.faq-intro{position:sticky;top:calc(var(--header-h) + 24px)}}

/* 8. Research tools */
.tools-section{background:linear-gradient(180deg,#fff 0%,#f7faff 100%)}
.pro-tool-grid{display:grid;gap:16px;grid-template-columns:1fr}
.pt{display:flex;flex-direction:column;padding:18px;border:1px solid #dce6f3;border-radius:var(--r-md);background:#fff;box-shadow:var(--shadow-sm);transition:transform .25s,box-shadow .25s}
.pt:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.tool-media{display:grid;place-items:center;height:92px;margin-bottom:16px;padding:12px;border:1px solid #edf2f8;border-radius:14px;background:#fff}
.tool-media img{width:100%;height:68px;object-fit:contain}
.tool-media .ic{width:42px;height:42px;stroke-width:1.6}
.tool-media .tex{font:700 1.75rem/1 Georgia,"Times New Roman",serif;letter-spacing:-.04em}
.tool-media .tex sub{font-size:.7em;position:relative;top:.2em}
.tm-qual{background:#f3edff;color:#7546d8}.tm-sem{background:#ffeef2;color:#c82f51}.tm-bi{background:#e9f8f0;color:#168a56}
.tm-latex{background:#e8f4fd;color:#1976b7}.tm-refs{background:#fdecef;color:#b82c42}
.pt h3{font-size:1.1rem;margin-bottom:.15rem}
.tool-sub{display:block;margin-bottom:.9rem;font-size:.85rem;line-height:1.35;color:#64758b}
.pt ul{flex:1;list-style:none;padding:0;margin:0 0 18px}
.pt li{position:relative;padding-left:20px;margin-block:8px;font-size:.86rem;line-height:1.4;color:#34475e}
.pt li::before{content:"";position:absolute;left:0;top:.28em;width:12px;height:12px;background:var(--blue);-webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m5 12 4.5 4.5L19 7'/%3E%3C/svg%3E") center/contain no-repeat;mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m5 12 4.5 4.5L19 7'/%3E%3C/svg%3E") center/contain no-repeat}
.tool-link{display:flex;align-items:center;justify-content:center;gap:.4rem;min-height:44px;padding:.5rem .75rem;border-radius:var(--r-sm);background:var(--blue);color:#fff;font-weight:700;font-size:.88rem;text-decoration:none;text-align:center;transition:background .2s}
.tool-link:hover{background:var(--blue-dark)}
.tool-link .ic{width:1em;height:1em}
@media (min-width:640px){.pro-tool-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1180px){.pro-tool-grid{grid-template-columns:repeat(5,minmax(0,1fr));gap:14px}.pt{padding:16px}}
/* each card spans 5 shared rows so titles/lists/buttons line up across a row */
@supports (grid-template-rows:subgrid){
  @media (min-width:640px){
    .pro-tool-grid{grid-auto-rows:auto}
    .pt{display:grid;grid-row:span 5;grid-template-rows:subgrid;row-gap:0}
    .pt ul{align-self:start}
    .pt .tool-link{align-self:end}
  }
}

.analysis-flow{display:grid;gap:16px;margin-top:20px;padding:20px;border:1px solid #dce6f3;border-radius:var(--r-md);background:#f8fbff}
.analysis-flow>div b{display:block;font-size:1.05rem;color:var(--navy)}
.analysis-flow>div span{display:block;margin-top:4px;font-size:.88rem;color:var(--muted)}
.analysis-flow ol{list-style:none;display:grid;grid-template-columns:1fr;gap:10px;padding:0;margin:0}
.analysis-flow li{display:flex;align-items:center;gap:12px;padding:12px 14px;border:1px solid #dfe8f4;border-radius:12px;background:#fff;font-size:.9rem;font-weight:700;color:var(--navy)}
.analysis-flow li b{display:grid;place-items:center;flex:none;width:28px;height:28px;border-radius:50%;background:#eaf2ff;color:var(--blue);font-size:.85rem}
@media (min-width:640px){.analysis-flow ol{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){
  .analysis-flow{grid-template-columns:230px 1fr;align-items:center}
  .analysis-flow ol{grid-template-columns:repeat(5,minmax(0,1fr))}
  .analysis-flow li{flex-direction:column;align-items:flex-start;gap:8px}
}
.more-tools,.keyword-strip{margin-top:16px;padding:18px 20px;border:1px solid #dce6f3;border-radius:var(--r-md);background:#fff}
.more-tools h3{margin-bottom:12px}
.more-tools>div,.keyword-strip{display:flex;flex-wrap:wrap;gap:8px}
.keyword-strip{align-items:center;background:#f8fbff}
.keyword-strip b{width:100%;font-size:.95rem;color:var(--blue)}
.more-tools span,.keyword-strip span,.area-cloud span{padding:7px 12px;border:1px solid #dce6f3;border-radius:999px;background:#f8fbff;color:#294663;font-size:.82rem;font-weight:600}
@media (min-width:640px){.keyword-strip b{width:auto;margin-right:6px}}
.tool-note,.integrity,.tool-disclaimer{margin-top:18px;padding:14px 18px;border-radius:12px;font-size:.9rem;line-height:1.55}
.tool-note,.integrity{background:#fff4ed;border-left:4px solid var(--orange);color:#5d6675}
.integrity{color:var(--ink)}
.tool-disclaimer{background:#fff7e8;color:#72531b;font-size:.85rem}

/* 9. Student tools */
.student-tools{background:linear-gradient(180deg,#f7fbff 0%,#fff 100%);border-block:1px solid #e6eef9}
.student-tool-grid{display:grid;gap:16px;grid-template-columns:1fr}
.student-tool{display:flex;flex-direction:column;padding:24px;background:#fff;border:1px solid #dbe7f6;border-radius:var(--r-md);box-shadow:var(--shadow-sm);transition:transform .25s,box-shadow .25s}
.student-tool:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.st-icon{display:grid;place-items:center;width:48px;height:48px;margin-bottom:16px;border-radius:14px;background:#eef5ff;color:var(--blue)}
.st-icon .ic{width:24px;height:24px}
.student-tool h3{font-size:1.2rem;color:#06275d}
.student-tool p{color:#58708f;font-size:.95rem;margin-bottom:1.2rem}
.student-tool button{margin-top:auto;min-height:46px;border:0;border-radius:var(--r-sm);background:var(--blue);color:#fff;font-weight:700;padding:.7rem 1rem;transition:background .2s}
.student-tool button:hover{background:var(--blue-dark)}
@media (min-width:640px){.student-tool-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.student-tool-grid{grid-template-columns:repeat(3,1fr);gap:20px}}
.tool-panel{display:none;margin-top:24px;padding:clamp(18px,3vw,28px);background:#fff;border:1px solid #d5e4f7;border-radius:var(--r-lg);box-shadow:var(--shadow-md)}
.tool-panel.open{display:block;animation:toolIn .25s ease}
.tool-panel-head{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;margin-bottom:20px;padding-bottom:16px;border-bottom:1px solid #e7eef8}
.tool-panel-head h3{margin:4px 0 0;font-size:clamp(1.2rem,1rem + 1vw,1.6rem);color:#06275d}
.tool-panel-head .eyebrow{margin:0}
.tool-close{flex:none;width:40px;height:40px;border:0;border-radius:50%;background:#f1f5fb;font-size:1.5rem;line-height:1;color:var(--navy)}
.tool-form{display:grid;gap:14px;grid-template-columns:1fr}
.tool-form label{display:flex;flex-direction:column;gap:6px;font-weight:700;font-size:.92rem;color:#163b6c}
.tool-form input,.tool-form select{width:100%;min-height:46px;padding:10px 12px;border:1px solid #cad9ec;border-radius:var(--r-sm);background:#fff;font-weight:400}
.tool-form .full{grid-column:1/-1}
.tool-action{min-height:46px;padding:.7rem 1.3rem;border:0;border-radius:var(--r-sm);background:var(--orange);color:#fff;font-weight:700}
.tool-action:hover{background:var(--orange-dark)}
.tool-result{margin-top:18px;padding:18px;border:1px solid #dbe8fa;border-radius:var(--r-md);background:#f4f8ff;color:#24476f;line-height:1.65;overflow-wrap:anywhere}
.tool-result strong{color:#06275d}
.timeline-result{display:grid;gap:4px;margin:10px 0}
.timeline-row{display:grid;gap:2px;padding:10px 0;border-bottom:1px dashed #d7e2f0}
.viva-list{padding-left:1.2rem}
.viva-list li{margin-block:9px}
.tool-wa{display:inline-flex;margin-top:14px;padding:11px 16px;border-radius:var(--r-sm);background:#12a85b;color:#fff;font-weight:700;text-decoration:none}
@keyframes toolIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
@media (min-width:640px){
  .tool-form{grid-template-columns:repeat(2,minmax(0,1fr))}
  .timeline-row{grid-template-columns:minmax(180px,230px) 1fr;gap:14px}
}

/* 10. Samples */
.samples-section{background:#fff}
.section-heading-row{display:grid;gap:12px;align-items:end;margin-bottom:clamp(24px,4vw,36px)}
.section-heading-row>p{margin:0;color:var(--muted);max-width:56ch}
.sample-grid{display:grid;gap:18px;grid-template-columns:1fr}
.sample-card{display:flex;flex-direction:column;overflow:hidden;border:1px solid #e0e7f1;border-radius:var(--r-lg);background:#fff;box-shadow:var(--shadow-sm);transition:transform .25s,box-shadow .25s}
.sample-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.sample-visual{aspect-ratio:16/9;background:#f3f7fd;overflow:hidden}
.sample-visual img{width:100%;height:100%;object-fit:cover}
.sample-body{display:flex;flex:1;flex-direction:column;padding:20px 22px 22px}
.sample-body small{font-size:.74rem;font-weight:800;letter-spacing:.1em;color:var(--orange)}
.sample-body h3{margin:6px 0 8px;color:var(--navy)}
.sample-body p{color:#617087;font-size:.95rem;margin-bottom:1rem}
@media (min-width:640px){.sample-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:900px){.section-heading-row{grid-template-columns:1fr 1fr;gap:40px}}
@media (min-width:1024px){.sample-grid{grid-template-columns:repeat(3,1fr);gap:20px}}

/* 12. Process + trust */
.steps{display:grid;gap:16px;grid-template-columns:1fr}
.steps>div{padding:24px;border:1px solid var(--line);border-radius:var(--r-md);background:#fff}
.steps b{display:block;margin-bottom:10px;font-size:1.75rem;line-height:1;color:var(--orange)}
.steps p{margin:0;color:var(--muted)}
.trust-cards{display:grid;gap:16px;grid-template-columns:1fr}
.trust-cards article{padding:24px;border:1px solid var(--line);border-radius:var(--r-md);background:#fff;transition:transform .25s,box-shadow .25s}
.trust-cards article:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.trust-cards article>span{display:grid;place-items:center;width:48px;height:48px;margin-bottom:16px;border-radius:14px;background:linear-gradient(145deg,#eaf3ff,#fff0e7);color:var(--blue)}
.trust-cards article>span .ic{width:24px;height:24px}
.trust-cards p{margin:0;color:var(--muted);font-size:.95rem}
@media (min-width:640px){.trust-cards{grid-template-columns:repeat(2,1fr)}}
@media (min-width:900px){.steps{grid-template-columns:repeat(3,1fr)}}
@media (min-width:1024px){.trust-cards{grid-template-columns:repeat(3,1fr);gap:20px}}

/* 13. Areas + global */
.areas{background:#f8fbff}
.area-cloud{display:flex;flex-wrap:wrap;gap:10px}
.area-cloud span{padding:10px 16px;background:#fff;font-size:.9rem}
.global{padding-block:clamp(40px,6vw,64px);background:#082f59;color:#fff}
.global h2,.global p{color:#fff}
.global p{max-width:62ch;opacity:.92}
.countries{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.countries span{display:inline-flex;align-items:center;gap:8px;padding:9px 16px;border:1px solid rgba(255,255,255,.22);border-radius:999px;background:rgba(255,255,255,.08);font-size:.92rem;font-weight:600}
.countries .ic{width:1.1em;height:1.1em;color:#9fc6ff}

/* 14. Contact */
.contact{background:#f7f9fc}
.contact-grid{display:grid;gap:clamp(28px,4vw,56px);align-items:start}
.contact-grid>div:first-child>p{color:var(--muted);max-width:52ch}
.contact-links{display:grid;gap:12px;margin:22px 0}
.contact-links a{display:flex;align-items:center;gap:10px;color:var(--blue);font-weight:700;text-decoration:none;overflow-wrap:anywhere}
.contact-links a:hover{text-decoration:underline}
.contact-links .ic{color:var(--orange)}
address{font-style:normal;padding:18px;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);line-height:1.65}
.contact form{padding:clamp(18px,3vw,28px);background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-md)}
.contact label{display:block;margin-bottom:14px;font-weight:700;font-size:.92rem}
.contact input,.contact select,.contact textarea{display:block;width:100%;min-height:46px;margin-top:6px;padding:11px 12px;border:1px solid #cbd7e2;border-radius:var(--r-sm);background:#fff;font-weight:400;font-size:1rem}
.contact textarea{min-height:110px;resize:vertical}
.contact input:focus,.contact select:focus,.contact textarea:focus{border-color:var(--blue);outline:3px solid rgba(20,89,232,.15)}
.contact form small{display:block;margin-top:12px;color:var(--muted)}
@media (min-width:900px){.contact-grid{grid-template-columns:1fr 1fr}}

/* 15. Footer */
.site-footer{padding-block:40px 28px;background:#fff;border-top:1px solid #e8edf2}
.foot{display:grid;gap:24px}
.foot img{height:44px;width:auto;margin-bottom:10px}
.foot p{margin:0 0 8px;color:var(--muted);font-size:.92rem}
.foot b{display:block;margin-bottom:8px;color:var(--navy)}
.foot a{text-decoration:none}
.foot a:hover{color:var(--blue);text-decoration:underline}
.foot-links{display:flex;flex-wrap:wrap;gap:6px 18px}
.copyright{margin:28px 0 0;padding-top:18px;border-top:1px solid #eef2f7;color:#7b8a9d;font-size:.85rem}
@media (min-width:768px){.foot{grid-template-columns:1.2fr 1.8fr;gap:48px}}

/* 16. Floating actions + chat */
.fab-stack{position:fixed;right:16px;bottom:16px;z-index:60;display:flex;flex-direction:column;align-items:flex-end;gap:12px}
.fab{display:inline-flex;align-items:center;justify-content:center;gap:10px;height:52px;min-width:52px;padding:0;border:0;border-radius:999px;color:#fff;font-weight:700;font-size:.95rem;text-decoration:none;box-shadow:0 12px 28px rgba(16,40,70,.25);transition:transform .2s}
.fab:hover{transform:translateY(-3px)}
.fab .ic{width:24px;height:24px}
.fab-wa{background:#18b663}
.fab-chat{background:var(--orange)}
.fab .fab-label{display:none}
.chat-open .fab-wa{display:none}
.chat-nudge{position:fixed;right:16px;bottom:140px;z-index:59;padding:8px 12px;border:1px solid #e2e8ef;border-radius:10px;background:#fff;box-shadow:0 9px 25px rgba(23,59,101,.18);font-size:.8rem;font-weight:700;color:#173b65;opacity:0;transform:translateY(8px);pointer-events:none;transition:opacity .35s,transform .35s}
.chat-nudge.show{opacity:1;transform:none}
.chat{display:none;position:fixed;left:12px;right:12px;bottom:80px;z-index:61;overflow:hidden;background:#fff;border:1px solid #e0e7ee;border-radius:16px;box-shadow:0 18px 65px rgba(16,43,76,.28)}
.chat.open{display:block}
.chat-head{display:flex;justify-content:space-between;align-items:center;padding:12px 14px;background:#0c4da2;color:#fff}
.chat-title{display:flex;align-items:center;gap:10px}
.chat-title small{display:block;opacity:.8;font-size:.78rem}
.chat-title .pen{display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:#fff;color:var(--orange)}
.chat-title .pen .ic{width:18px;height:18px}
.chat-head>button{width:36px;height:36px;border:0;border-radius:50%;background:rgba(255,255,255,.14);color:#fff;font-size:1.4rem;line-height:1}
.chat-body{max-height:min(480px,calc(100dvh - 190px));overflow-y:auto;padding:14px;background:linear-gradient(#fff,#fbfdff)}
.paper-intro,.bot{margin:0 0 10px;padding:11px 13px;border-radius:10px;background:#f2f5f8}
.user-msg{margin:8px 0;padding:10px 12px;border-radius:10px;background:#e8f1ff}
.chips button{display:block;width:100%;margin:6px 0;padding:11px 13px;border:1px solid #dbe4ed;border-radius:10px;background:#fff;text-align:left;font-size:.92rem}
.chips button:hover{border-color:var(--blue);background:#f5f9ff}
.chat-cta{display:block;margin-top:10px;padding:12px;border-radius:10px;background:#16b65f;color:#fff;font-weight:700;text-align:center;text-decoration:none}
@media (min-width:768px){
  .fab-stack{right:24px;bottom:24px}
  .fab{padding:0 18px}
  .fab .fab-label{display:inline}
  .chat{left:auto;right:24px;bottom:94px;width:360px}
  .chat-nudge{right:24px;bottom:160px}
}

/* 17. Motion */
.js .reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.js .reveal.visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .js .reveal{opacity:1;transform:none}
}

/* 18. Legal pages */
.legal{padding-block:clamp(40px,7vw,88px);background:linear-gradient(180deg,#f5faff,#fff)}
.legal-card{max-width:820px;margin-inline:auto;padding:clamp(22px,4vw,44px);background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-md)}
.legal-card h1{font-size:clamp(1.8rem,1.2rem + 2.2vw,2.6rem);margin-bottom:1.4rem}
.legal-card h2{font-size:clamp(1.2rem,1.05rem + .6vw,1.5rem);margin:0 0 .6rem}
.legal-card p{color:var(--muted);font-size:1.02rem}
.legal-meta{margin-top:1.6rem;padding-top:1.2rem;border-top:1px solid #eef2f7;color:#7b8a9d;font-size:.9rem}
.legal-back{display:inline-flex;align-items:center;gap:.4rem;margin-top:1.4rem;color:var(--blue);font-weight:700;text-decoration:none}
.legal-back:hover{text-decoration:underline}
.nav-simple{margin-left:auto}

/* 19. V14 refinements + motion */
.global{background:linear-gradient(135deg,#0a1b43,#10316f)}
.tools-section .section-head h2 .hl,.student-tools .section-head h2 .hl{color:var(--blue)}
.trust-cards article,.steps>div,.sample-card,.student-tool,.pt{transition:transform .3s,box-shadow .3s,border-color .3s}
.steps>div:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.steps b{font-family:var(--serif)}
.countries span,.area-cloud span{transition:transform .25s,background .25s}
.countries span:hover,.area-cloud span:hover{transform:translateY(-2px)}
.phd-top+.pj .x{display:none}
@keyframes floatY{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
@keyframes drift1{0%,100%{transform:translate(0,0)}50%{transform:translate(-40px,30px)}}
@keyframes drift2{0%,100%{transform:translate(0,0)}50%{transform:translate(50px,-30px)}}
@keyframes pulse{0%{transform:scale(.6);opacity:.8}100%{transform:scale(1.8);opacity:0}}
@keyframes ringPulse{0%,100%{box-shadow:0 0 0 4px rgba(20,89,232,.16)}50%{box-shadow:0 0 0 9px rgba(20,89,232,.05)}}
@keyframes grow{from{width:0}}
@keyframes marq{to{transform:translateX(-50%)}}
@keyframes caret{50%{opacity:0}}
@keyframes cardIn{0%{opacity:0;transform:translateY(12px)}12%,86%{opacity:1;transform:none}100%{opacity:0;transform:translateY(-4px)}}
@keyframes faqIn{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}
@keyframes menuIn{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}
@keyframes popIn{from{opacity:0;transform:scale(.6)}to{opacity:1;transform:none}}
.js .pj:not(.in) li i{opacity:0}
.js .pj.in li i{animation:popIn .5s cubic-bezier(.3,1.5,.5,1) both}
.js .pj.in li:nth-child(2) i{animation-delay:.12s}.js .pj.in li:nth-child(3) i{animation-delay:.24s}.js .pj.in li:nth-child(4) i{animation-delay:.36s}.js .pj.in li:nth-child(5) i{animation-delay:.48s}.js .pj.in li:nth-child(6) i{animation-delay:.6s}.js .pj.in li:nth-child(7) i{animation-delay:.72s}

.lib-logo{display:flex;width:max-content;max-width:100%;margin-bottom:16px;padding:10px 16px;background:#fff;border-radius:14px;box-shadow:0 10px 30px rgba(0,0,0,.25);transition:transform .25s}.lib-logo:hover{transform:translateY(-2px)}.lib-logo img{height:46px;width:auto}@media (max-width:480px){.lib-logo img{height:38px}}