/* =========================================================
   Prof. Ahmed Samir Hosny — Vascular & Endovascular Surgery
   Design system v3 · bilingual (RTL/LTR) · logical properties
   ========================================================= */
:root{
--ink:#0b2540;--ink2:#1f3a56;--soft:#52677d;--mute:#7b8da0;
--blue:#1568b8;--blue2:#0f4c8a;--blue3:#5fa3de;--tint:#e9f2fb;--tint2:#f4f8fc;
--line:#dbe6f1;--line2:#eaf0f6;--bg:#ffffff;--paper:#f6f9fc;
--red:#d9434b;--red-t:#fdecec;--green:#1aa260;--wa:#25d366;--wa2:#128c4b;--gold:#f2b84b;
--r-sm:10px;--r:16px;--r-lg:22px;--sh-sm:0 2px 8px -4px rgba(11,37,64,.18);--sh:0 18px 40px -26px rgba(11,37,64,.45);--sh-lg:0 30px 70px -34px rgba(11,37,64,.55);
--maxw:1200px;--hdr:72px;--font:'Cairo',system-ui,-apple-system,'Segoe UI',sans-serif;
}
html[lang=en]{--font:'Inter','Cairo',system-ui,-apple-system,'Segoe UI',sans-serif;}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--hdr) + 20px);-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);color:var(--ink2);background:var(--bg);line-height:1.75;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
html[lang=en] body{line-height:1.65}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
button{font-family:inherit}
:focus-visible{outline:3px solid rgba(21,104,184,.45);outline-offset:2px;border-radius:6px}
.container{max-width:var(--maxw);margin:0 auto;padding-inline:clamp(16px,4vw,40px)}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}
.skip{position:absolute;inset-inline-start:12px;top:-60px;z-index:3000;background:var(--ink);color:#fff;padding:10px 16px;border-radius:10px;text-decoration:none;font-weight:700}
.skip:focus{top:12px}
.ic{display:inline-block;width:1.15em;height:1.15em;flex:0 0 auto;vertical-align:-.2em}

/* ---------- top bar ---------- */
.topbar{background:var(--ink);color:rgba(255,255,255,.82);font-size:.84rem}
.topbar__in{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:38px}
.topbar__l,.topbar__r{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.topbar a{color:#fff;text-decoration:none;display:inline-flex;align-items:center;gap:6px;font-weight:600}
.topbar a:hover{color:var(--blue3)}
.topbar .sep{opacity:.35}
@media(max-width:760px){.topbar__hide{display:none!important}.topbar__in{justify-content:center}}

/* ---------- header ---------- */
.hdr{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.92);backdrop-filter:saturate(1.6) blur(14px);-webkit-backdrop-filter:saturate(1.6) blur(14px);border-bottom:1px solid var(--line2);transition:box-shadow .2s}
.hdr.is-scrolled{box-shadow:0 10px 30px -20px rgba(11,37,64,.45)}
.hdr__in{display:flex;align-items:center;gap:14px;min-height:var(--hdr)}
.brand{display:inline-flex;align-items:center;gap:11px;text-decoration:none;flex:0 0 auto}
.brand img{width:48px;height:48px;border-radius:50%}
.brand__t{display:flex;flex-direction:column;line-height:1.25}
.brand__t b{font-size:1.04rem;font-weight:800;color:var(--ink);white-space:nowrap}
.brand__t small{font-size:.74rem;font-weight:600;color:var(--blue2);white-space:nowrap}
.nav{display:flex;align-items:center;gap:2px;margin-inline-start:auto}
.nav a{font-size:.95rem;font-weight:700;color:var(--ink);text-decoration:none;padding:9px 13px;border-radius:10px;transition:background .15s,color .15s;white-space:nowrap}
.nav a:hover{background:var(--tint);color:var(--blue2)}
.nav a[aria-current=page]{color:var(--blue2);background:var(--tint)}
.hdr__act{display:flex;align-items:center;gap:8px}
.lang{display:inline-flex;align-items:center;gap:7px;height:42px;padding:0 13px;border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--ink);font-weight:800;font-size:.9rem;text-decoration:none;transition:border-color .15s,background .15s}
.lang:hover{border-color:var(--blue);background:var(--tint)}
.lang .ic{color:var(--blue)}
.btn-book{display:inline-flex;align-items:center;gap:8px;height:42px;padding:0 18px;border-radius:12px;color:#fff;font-weight:800;font-size:.92rem;text-decoration:none;background:linear-gradient(135deg,var(--blue),var(--blue2));box-shadow:0 10px 22px -12px rgba(21,104,184,.8);white-space:nowrap}
.btn-book:hover{filter:brightness(1.07)}
.burger{display:none;width:44px;height:42px;border:1px solid var(--line);border-radius:12px;background:#fff;cursor:pointer;padding:0;align-items:center;justify-content:center;flex-direction:column;gap:5px;-webkit-appearance:none;appearance:none}
.burger span{display:block;width:20px;height:2px;border-radius:2px;background:var(--ink);transition:transform .25s,opacity .2s}
.burger[aria-expanded=true] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger[aria-expanded=true] span:nth-child(2){opacity:0}
.burger[aria-expanded=true] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media(max-width:1060px){
.burger{display:inline-flex}
.nav{position:absolute;inset-inline:0;top:100%;flex-direction:column;align-items:stretch;gap:2px;margin:0;padding:10px clamp(16px,4vw,40px) 18px;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 24px 40px -24px rgba(11,37,64,.45);visibility:hidden;opacity:0;transform:translateY(-8px);transition:opacity .2s,transform .2s,visibility 0s .2s}
.nav.open{visibility:visible;opacity:1;transform:none;transition:opacity .2s,transform .2s}
.nav a{padding:13px 14px;font-size:1.02rem}
.hdr__act{margin-inline-start:auto}
}
@media(max-width:560px){.btn-book{display:none}.brand__t small{display:none}.brand img{width:42px;height:42px}.lang{padding:0 10px}.lang .lang__full{display:none}}
@media(min-width:561px){.lang .lang__short{display:none}}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;font-weight:800;font-size:.98rem;text-decoration:none;padding:14px 24px;border-radius:13px;border:1.5px solid transparent;cursor:pointer;transition:transform .15s,filter .2s,background .2s,border-color .2s;line-height:1.2}
.btn:hover{transform:translateY(-2px)}
.btn--wa{color:#fff;background:linear-gradient(135deg,var(--wa),var(--wa2));box-shadow:0 14px 28px -14px rgba(18,140,75,.75)}
.btn--blue{color:#fff;background:linear-gradient(135deg,var(--blue),var(--blue2));box-shadow:0 14px 28px -14px rgba(21,104,184,.75)}
.btn--ghost{color:var(--blue2);background:#fff;border-color:var(--line)}
.btn--ghost:hover{border-color:var(--blue)}
.btn--light{color:var(--ink);background:#fff}
.btn--sm{padding:10px 16px;font-size:.9rem;border-radius:11px}
.btn--block{width:100%}

/* ---------- sections ---------- */
.sec{padding:clamp(48px,6.5vw,88px) 0}
.sec--soft{background:var(--paper)}
.sec--tint{background:linear-gradient(180deg,#eef5fc,#f7fafd)}
.sec__head{max-width:680px;margin:0 auto clamp(28px,4vw,48px);text-align:center}
.sec__head--start{margin-inline:0;text-align:start}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.8rem;font-weight:800;letter-spacing:.02em;color:var(--blue2);background:var(--tint);padding:6px 13px;border-radius:100px;margin-bottom:12px}
html[lang=en] .eyebrow{text-transform:uppercase;letter-spacing:.06em;font-size:.72rem}
.h2{font-size:clamp(1.6rem,3.2vw,2.35rem);font-weight:800;line-height:1.28;color:var(--ink);margin:0 0 10px;letter-spacing:-.01em}
.lead-p{font-size:clamp(1rem,1.5vw,1.1rem);color:var(--soft);margin:0}
.grid{display:grid;gap:clamp(14px,2vw,22px)}
.g2{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}
@media(max-width:980px){.g4{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.g4,.g3,.g2{grid-template-columns:1fr}}

/* ---------- page hero (inner pages) ---------- */
.phero{position:relative;overflow:hidden;background:radial-gradient(60% 80% at 85% 0%,rgba(95,163,222,.28),transparent 60%),linear-gradient(135deg,#0b2540,#0f4c8a);color:#fff;padding:clamp(44px,6vw,80px) 0 clamp(40px,5vw,64px)}
.phero::after{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.08) 1px,transparent 1px);background-size:22px 22px;mask-image:linear-gradient(180deg,#000,transparent 85%);-webkit-mask-image:linear-gradient(180deg,#000,transparent 85%);pointer-events:none}
.phero .container{position:relative;z-index:1}
.phero h1{font-size:clamp(1.9rem,4.4vw,3rem);font-weight:800;line-height:1.22;margin:0 0 12px;letter-spacing:-.015em}
.phero p{font-size:clamp(1rem,1.6vw,1.15rem);color:rgba(255,255,255,.8);margin:0;max-width:62ch}
.phero .eyebrow{background:rgba(255,255,255,.12);color:#cfe3f7}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:.85rem;color:rgba(255,255,255,.7);margin-bottom:18px;list-style:none;padding:0}
.crumbs a{color:#fff;text-decoration:none;font-weight:600}
.crumbs a:hover{text-decoration:underline}
.crumbs li+li::before{content:"›";margin-inline-end:6px;opacity:.6}
html[dir=rtl] .crumbs li+li::before{content:"‹"}

/* ---------- home hero ---------- */
.hero{position:relative;overflow:hidden;background:radial-gradient(50% 70% at 90% 10%,rgba(21,104,184,.16),transparent 60%),radial-gradient(40% 60% at 0% 100%,rgba(95,163,222,.18),transparent 60%),linear-gradient(180deg,#f2f7fd,#e9f2fb);padding:clamp(40px,6vw,84px) 0 clamp(48px,6vw,90px)}
.hero__grid{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(28px,5vw,64px);align-items:center}
.hero h1{font-size:clamp(2.1rem,5vw,3.5rem);font-weight:900;line-height:1.15;color:var(--ink);margin:0 0 6px;letter-spacing:-.02em}
.hero__role{font-size:clamp(1.05rem,2vw,1.35rem);font-weight:700;color:var(--blue2);margin:0 0 16px}
.hero__sub{font-size:clamp(1rem,1.6vw,1.12rem);color:var(--soft);margin:0 0 24px;max-width:56ch}
.hero__cta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px}
.hero__trust{display:flex;flex-wrap:wrap;gap:10px;list-style:none;margin:0;padding:0}
.hero__trust li{display:inline-flex;align-items:center;gap:8px;font-size:.86rem;font-weight:700;color:var(--ink);background:#fff;border:1px solid var(--line);padding:8px 13px;border-radius:12px;box-shadow:var(--sh-sm)}
.hero__trust .ic{color:var(--green)}
.hero__media{position:relative;justify-self:center;width:min(100%,460px)}
.hero__photo{position:relative;border-radius:28px;overflow:hidden;background:linear-gradient(180deg,#fff,#eaf3fc);border:1px solid var(--line);box-shadow:var(--sh-lg);aspect-ratio:1/1}
.hero__photo img{width:100%;height:100%;object-fit:cover;object-position:50% 20%}
.float{position:absolute;display:flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:10px 14px;box-shadow:var(--sh);font-size:.84rem;font-weight:700;color:var(--ink);line-height:1.35}
.float b{display:block;font-size:.95rem;color:var(--blue2)}
.float .fi{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:11px;background:var(--tint);color:var(--blue)}
.float--a{inset-inline-start:-18px;top:14%}
.float--b{inset-inline-end:-14px;bottom:12%}
@media(max-width:900px){.hero__grid{grid-template-columns:1fr;text-align:center}.hero__sub{margin-inline:auto}.hero__cta,.hero__trust{justify-content:center}.hero__media{order:-1;width:min(100%,340px)}.float--a{inset-inline-start:-8px}.float--b{inset-inline-end:-8px}}
@media(max-width:420px){.float{font-size:.74rem;padding:8px 10px}.float .fi{width:30px;height:30px}}

/* trust strip */
.strip{background:#fff;border-block:1px solid var(--line2)}
.strip__in{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.strip__i{display:flex;align-items:center;gap:12px;padding:20px 18px}
.strip__i+.strip__i{border-inline-start:1px solid var(--line2)}
.strip__i .si{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:13px;background:var(--tint);color:var(--blue);flex:0 0 auto}
.strip__i b{display:block;font-size:.95rem;color:var(--ink);line-height:1.35}
.strip__i span{font-size:.8rem;color:var(--mute)}
@media(max-width:900px){.strip__in{grid-template-columns:repeat(2,1fr)}.strip__i:nth-child(3){border-inline-start:0}.strip__i:nth-child(n+3){border-top:1px solid var(--line2)}}
@media(max-width:480px){.strip__i{padding:14px 10px;gap:9px}.strip__i .si{width:36px;height:36px}.strip__i b{font-size:.84rem}}

/* ---------- cards ---------- */
.card{position:relative;display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:clamp(20px,2.4vw,26px);text-decoration:none;color:inherit;box-shadow:var(--sh-sm);transition:transform .2s,box-shadow .2s,border-color .2s}
a.card:hover{transform:translateY(-4px);box-shadow:var(--sh);border-color:#c8dbee}
.card__ic{display:inline-flex;align-items:center;justify-content:center;width:52px;height:52px;border-radius:15px;margin-bottom:14px;color:var(--blue);background:var(--tint)}
a.card:hover .card__ic{background:linear-gradient(135deg,var(--blue),var(--blue2));color:#fff}
.card h3{font-size:1.08rem;font-weight:800;color:var(--ink);margin:0 0 6px;line-height:1.45}
.card p{font-size:.93rem;color:var(--soft);margin:0}
.card__more{margin-top:auto;padding-top:14px;display:inline-flex;align-items:center;gap:6px;font-size:.88rem;font-weight:800;color:var(--blue)}
.card__more .ic{transition:transform .2s}
a.card:hover .card__more .ic{transform:translateX(4px)}
html[dir=rtl] a.card:hover .card__more .ic{transform:translateX(-4px)}
html[dir=rtl] .flip{transform:scaleX(-1)}

/* featured (aorta center) */
.feature{display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,4vw,56px);align-items:center;background:linear-gradient(135deg,#0b2540,#0f4c8a);border-radius:28px;padding:clamp(26px,4vw,52px);color:#fff;overflow:hidden;position:relative}
.feature h2{color:#fff}
.feature p{color:rgba(255,255,255,.78)}
.feature .eyebrow{background:rgba(255,255,255,.12);color:#cfe3f7}
.feature__img{border-radius:20px;overflow:hidden;box-shadow:0 30px 60px -30px rgba(0,0,0,.6)}
.feature__list{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:22px 0 26px;padding:0;list-style:none}
.feature__list a{display:flex;align-items:center;gap:9px;padding:11px 13px;border-radius:12px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);color:#fff;text-decoration:none;font-weight:700;font-size:.92rem;transition:background .2s}
.feature__list a:hover{background:rgba(255,255,255,.16)}
.feature__list .ic{color:var(--blue3)}
@media(max-width:900px){.feature{grid-template-columns:1fr}.feature__img{order:-1}}
@media(max-width:480px){.feature__list{grid-template-columns:1fr}}

/* article cards */
.acard{padding:0;overflow:hidden}
.acard__th{aspect-ratio:16/9;overflow:hidden;background:var(--tint);border-bottom:1px solid var(--line2)}
.acard__th img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
a.acard:hover .acard__th img{transform:scale(1.04)}
.acard__b{display:flex;flex-direction:column;flex:1;padding:18px 20px 20px}
.tagc{display:inline-flex;align-self:flex-start;align-items:center;gap:6px;font-size:.74rem;font-weight:800;color:var(--blue2);background:var(--tint);padding:4px 10px;border-radius:100px;margin-bottom:10px}
.tagc--red{color:var(--red);background:var(--red-t)}
.acard h3{font-size:1.06rem;margin-bottom:8px}
.acard p{font-size:.9rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.acard__meta{display:flex;align-items:center;gap:6px;margin-top:auto;padding-top:14px;font-size:.8rem;color:var(--mute);font-weight:600}

/* about split */
.split{display:grid;grid-template-columns:.85fr 1.15fr;gap:clamp(28px,5vw,64px);align-items:center}
.split__img{border-radius:26px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-lg);background:linear-gradient(180deg,#fff,#eaf3fc)}
.checks{list-style:none;margin:18px 0 0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:12px}
.checks li{display:flex;align-items:flex-start;gap:10px;font-weight:700;color:var(--ink);font-size:.95rem}
.checks .ic{color:#fff;background:var(--green);border-radius:50%;padding:3px;width:22px;height:22px;margin-top:2px}
@media(max-width:900px){.split{grid-template-columns:1fr}.split__img{max-width:420px;margin-inline:auto}}
@media(max-width:520px){.checks{grid-template-columns:1fr}}

/* steps */
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(4,1fr);gap:18px;list-style:none;margin:0;padding:0}
.steps li{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:24px 20px 20px;box-shadow:var(--sh-sm)}
.steps li::before{counter-increment:s;content:counter(s);display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:12px;background:linear-gradient(135deg,var(--blue),var(--blue2));color:#fff;font-weight:900;margin-bottom:12px}
.steps h3{font-size:1.02rem;margin:0 0 6px;color:var(--ink)}
.steps p{font-size:.9rem;margin:0;color:var(--soft)}
@media(max-width:900px){.steps{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.steps{grid-template-columns:1fr}}

/* clinics */
.clinic{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:clamp(22px,3vw,30px);box-shadow:var(--sh)}
.clinic__h{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.clinic__h .card__ic{margin:0;background:linear-gradient(135deg,var(--blue),var(--blue2));color:#fff}
.clinic h3{font-size:1.25rem;margin:0;color:var(--ink)}
.clinic__addr{color:var(--soft);font-size:.95rem;margin:0 0 14px;padding-bottom:14px;border-bottom:1px dashed var(--line)}
.clinic__row{display:flex;align-items:center;gap:10px;font-size:.94rem;color:var(--ink);margin-bottom:8px}
.clinic__row .ic{color:var(--blue)}
.clinic__acts{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:auto;padding-top:16px}
@media(max-width:420px){.clinic__acts{grid-template-columns:1fr}}

/* faq */
.faq{display:flex;flex-direction:column;gap:10px;max-width:860px;margin-inline:auto}
.faq details{background:#fff;border:1px solid var(--line);border-radius:14px;transition:box-shadow .2s,border-color .2s}
.faq details[open]{box-shadow:var(--sh);border-color:#c8dbee}
.faq summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:16px 20px;font-weight:800;color:var(--ink);font-size:1rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:8px;background:var(--tint);color:var(--blue);font-weight:900;font-size:1.1rem;transition:transform .2s}
.faq details[open] summary::after{content:"−"}
.faq details p{margin:0;padding:0 20px 18px;color:var(--soft)}

/* CTA band */
.band{position:relative;overflow:hidden;border-radius:28px;padding:clamp(28px,4vw,52px);background:radial-gradient(60% 120% at 100% 0%,rgba(95,163,222,.35),transparent 60%),linear-gradient(135deg,var(--blue),var(--blue2));color:#fff;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.band h2{color:#fff;margin:0 0 6px;font-size:clamp(1.4rem,2.8vw,2rem)}
.band p{margin:0;color:rgba(255,255,255,.82)}
.band__a{display:flex;gap:10px;flex-wrap:wrap}

/* ---------- blog tools ---------- */
.tools{display:flex;flex-direction:column;gap:14px;margin-bottom:28px}
.search{position:relative;max-width:560px}
.search input{width:100%;height:52px;padding-inline:48px 16px;border:1.5px solid var(--line);border-radius:14px;font-family:inherit;font-size:1rem;background:#fff;color:var(--ink);box-shadow:var(--sh-sm)}
.search input:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 4px rgba(21,104,184,.14)}
.search .ic{position:absolute;inset-inline-start:16px;top:50%;transform:translateY(-50%);color:var(--mute);width:20px;height:20px}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{display:inline-flex;align-items:center;gap:6px;height:38px;padding:0 15px;border-radius:100px;border:1px solid var(--line);background:#fff;color:var(--ink2);font-weight:700;font-size:.88rem;cursor:pointer;text-decoration:none;transition:all .15s}
.chip:hover{border-color:var(--blue);color:var(--blue2)}
.chip[aria-pressed=true],.chip.on{background:var(--ink);border-color:var(--ink);color:#fff}
.chip small{opacity:.65;font-weight:700}
.empty{display:none;text-align:center;padding:40px;color:var(--mute);font-weight:700}

/* ---------- services groups ---------- */
.sgroup{scroll-margin-top:calc(var(--hdr) + 80px)}
.sgroup+.sgroup{margin-top:clamp(40px,5vw,64px)}
.sgroup__h{display:flex;align-items:center;gap:14px;margin-bottom:20px}
.sgroup__h .card__ic{margin:0;background:linear-gradient(135deg,var(--blue),var(--blue2));color:#fff}
.sgroup__h h2{font-size:clamp(1.3rem,2.4vw,1.7rem);margin:0;color:var(--ink)}
.sgroup__h p{margin:2px 0 0;color:var(--soft);font-size:.94rem}
.subnav{position:sticky;top:calc(var(--hdr) + 0px);z-index:50;background:rgba(255,255,255,.95);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line2);padding:10px 0}
.subnav .chips{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;padding-bottom:2px}
.subnav .chips::-webkit-scrollbar{display:none}
.subnav .chip{flex:0 0 auto}

/* ---------- form ---------- */
.form{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:clamp(22px,3vw,34px);box-shadow:var(--sh-lg);max-width:560px;margin-inline:auto}
.form label{display:block;margin-bottom:14px}
.form label>span{display:block;font-weight:800;font-size:.9rem;color:var(--ink);margin-bottom:7px}
.form input,.form select,.form textarea{width:100%;padding:13px 15px;font:inherit;font-size:1rem;border:1.5px solid var(--line);border-radius:12px;background:var(--tint2);color:var(--ink)}
.form input:focus,.form select:focus,.form textarea:focus{outline:none;border-color:var(--blue);background:#fff;box-shadow:0 0 0 4px rgba(21,104,184,.14)}
.form .err{display:none;color:var(--red);font-size:.84rem;font-weight:700;margin-top:6px}
.form .bad input{border-color:var(--red)}.form .bad .err{display:block}
.form__note{font-size:.82rem;color:var(--mute);text-align:center;margin:12px 0 0}

/* ---------- article ---------- */
.prog{position:fixed;inset-inline-start:0;top:0;height:3px;width:0;background:linear-gradient(90deg,var(--blue3),var(--blue));z-index:2000;transition:width .08s linear}
.ahero{background:radial-gradient(60% 90% at 90% 0%,rgba(95,163,222,.3),transparent 60%),linear-gradient(135deg,#0b2540,#0f4c8a);color:#fff;padding:clamp(30px,4.5vw,56px) 0 clamp(90px,10vw,140px)}
.ahero__in{max-width:860px}
.ahero .crumbs{margin-bottom:16px}
.ahero__tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.ahero__tags .tagc{background:rgba(255,255,255,.14);color:#fff;margin:0}
.ahero__tags .tagc--red{background:rgba(217,67,75,.9)}
.ahero h1{font-size:clamp(1.75rem,4vw,2.75rem);font-weight:800;line-height:1.28;margin:0 0 12px;letter-spacing:-.015em}
.ahero__sub{font-size:clamp(1rem,1.6vw,1.15rem);color:rgba(255,255,255,.8);margin:0 0 22px}
.meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;font-size:.88rem;color:rgba(255,255,255,.78)}
.meta__au{display:flex;align-items:center;gap:10px;color:#fff}
.meta__au img{width:42px;height:42px;border-radius:50%;border:2px solid rgba(255,255,255,.4)}
.meta__au b{display:block;font-size:.95rem}
.meta__au small{display:flex;align-items:center;gap:5px;color:#9fe0bd;font-weight:700}
.meta__i{display:inline-flex;align-items:center;gap:6px}
.alayout{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:clamp(24px,3.5vw,48px);align-items:start;margin-top:clamp(-110px,-8vw,-70px);position:relative;z-index:2;padding-bottom:clamp(40px,5vw,72px)}
.abody{min-width:0}
.cover{margin:0 0 26px;border-radius:22px;overflow:hidden;box-shadow:var(--sh-lg);border:4px solid #fff;background:var(--tint)}
.cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.prose{font-size:1.07rem;color:var(--ink2)}
html[lang=en] .prose{font-size:1.05rem}
.prose>p,.prose>ul,.prose>ol{margin:0 0 18px}
.prose h2{font-size:clamp(1.35rem,2.4vw,1.65rem);font-weight:800;color:var(--ink);line-height:1.38;margin:40px 0 14px;padding-top:4px;display:flex;align-items:center;gap:12px}
.prose h2::before{content:"";flex:0 0 auto;width:6px;height:1.1em;border-radius:4px;background:linear-gradient(180deg,var(--blue3),var(--blue))}
.prose strong{color:var(--ink)}
.prose ul{list-style:none;padding:0}
.prose ul li{position:relative;padding-inline-start:30px;margin-bottom:10px}
.prose ul li::before{content:"";position:absolute;inset-inline-start:6px;top:.62em;width:9px;height:9px;border-radius:50%;background:var(--blue);box-shadow:0 0 0 4px var(--tint)}
.prose ol{counter-reset:o;list-style:none;padding:0}
.prose ol li{counter-increment:o;position:relative;padding:14px 18px;padding-inline-start:60px;margin-bottom:10px;background:var(--tint2);border:1px solid var(--line2);border-radius:14px}
.prose ol li::before{content:counter(o);position:absolute;inset-inline-start:16px;top:13px;width:30px;height:30px;border-radius:9px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--blue),var(--blue2));color:#fff;font-weight:900;font-size:.9rem}
.keybox{position:relative;background:linear-gradient(135deg,#f2f8fe,#e8f1fb);border:1px solid #cfe0f2;border-radius:18px;padding:20px 22px;margin:0 0 26px;font-size:1.08rem;color:var(--ink);font-weight:600}
.keybox__t{display:flex;align-items:center;gap:8px;font-size:.82rem;font-weight:900;color:var(--blue2);margin-bottom:6px}
html[lang=en] .keybox__t{text-transform:uppercase;letter-spacing:.06em}
.mtoc{display:none;margin:0 0 24px;background:#fff;border:1px solid var(--line);border-radius:16px}
.mtoc summary{cursor:pointer;list-style:none;padding:14px 18px;font-weight:800;color:var(--ink);display:flex;align-items:center;gap:10px}
.mtoc summary::-webkit-details-marker{display:none}
.mtoc summary::after{content:"▾";margin-inline-start:auto;color:var(--blue)}
.mtoc[open] summary::after{content:"▴"}
.mtoc ol{margin:0;padding:0 18px 14px;list-style:none}
.mtoc a{display:block;padding:7px 0;color:var(--soft);text-decoration:none;font-weight:600;border-top:1px solid var(--line2)}
.quote{position:relative;margin:32px 0;padding:24px 26px;padding-inline-start:70px;border-radius:18px;background:var(--ink);color:#fff;font-size:1.12rem;font-weight:700;line-height:1.7}
.quote::before{content:"“";position:absolute;inset-inline-start:22px;top:8px;font-size:4rem;line-height:1;color:var(--blue3);font-family:Georgia,serif}
.disc{display:flex;gap:12px;align-items:flex-start;font-size:.9rem;color:var(--soft);background:#fffaf0;border:1px solid #f3e2bd;border-radius:14px;padding:14px 16px;margin:28px 0}
.disc .ic{color:#c48a12;margin-top:3px}
.share{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin:26px 0;padding:16px 0;border-block:1px solid var(--line2)}
.share b{font-size:.92rem;color:var(--ink);margin-inline-end:6px}
.share a,.share button{display:inline-flex;align-items:center;justify-content:center;gap:6px;height:40px;min-width:40px;padding:0 12px;border-radius:11px;border:1px solid var(--line);background:#fff;color:var(--ink2);font-weight:700;font-size:.86rem;cursor:pointer;text-decoration:none}
.share a:hover,.share button:hover{border-color:var(--blue);color:var(--blue2)}
.aubox{display:flex;gap:18px;align-items:flex-start;background:var(--paper);border:1px solid var(--line);border-radius:20px;padding:22px}
.aubox img{width:84px;height:84px;border-radius:50%;flex:0 0 auto;border:3px solid #fff;box-shadow:var(--sh-sm)}
.aubox h3{margin:0 0 2px;font-size:1.1rem;color:var(--ink)}
.aubox .role{font-size:.88rem;color:var(--blue2);font-weight:700;margin:0 0 8px}
.aubox p{margin:0 0 12px;font-size:.93rem;color:var(--soft)}
@media(max-width:520px){.aubox{flex-direction:column;align-items:center;text-align:center}}
/* sidebar */
.aside{position:sticky;top:calc(var(--hdr) + 18px);display:flex;flex-direction:column;gap:16px;max-height:calc(100vh - var(--hdr) - 36px);overflow:auto;scrollbar-width:none;padding-bottom:4px}
.aside::-webkit-scrollbar{display:none}
.box{background:#fff;border:1px solid var(--line);border-radius:20px;padding:18px;box-shadow:var(--sh)}
.box__t{display:flex;align-items:center;gap:8px;font-size:.82rem;font-weight:900;color:var(--mute);margin:0 0 12px}
html[lang=en] .box__t{text-transform:uppercase;letter-spacing:.07em;font-size:.72rem}
.toc{list-style:none;margin:0;padding:0;position:relative}
.toc::before{content:"";position:absolute;inset-inline-start:7px;top:6px;bottom:6px;width:2px;background:var(--line2);border-radius:2px}
.toc a{position:relative;display:block;padding:7px 0;padding-inline-start:26px;font-size:.92rem;font-weight:600;color:var(--soft);text-decoration:none;line-height:1.45;transition:color .15s}
.toc a::before{content:"";position:absolute;inset-inline-start:3px;top:13px;width:10px;height:10px;border-radius:50%;background:#fff;border:2px solid var(--line);transition:all .15s}
.toc a:hover{color:var(--blue2)}
.toc a.on{color:var(--ink);font-weight:800}
.toc a.on::before{background:var(--blue);border-color:var(--blue);box-shadow:0 0 0 4px var(--tint)}
.toc__bar{height:4px;border-radius:4px;background:var(--line2);margin-top:12px;overflow:hidden}
.toc__bar i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--blue3),var(--blue));transition:width .1s}
.docc{text-align:center;background:linear-gradient(180deg,#fff,#f3f8fd)}
.docc img{width:84px;height:84px;border-radius:50%;margin:0 auto 10px;border:3px solid #fff;box-shadow:var(--sh)}
.docc h3{margin:0;font-size:1.02rem;color:var(--ink)}
.docc p{margin:2px 0 12px;font-size:.84rem;color:var(--soft)}
.docc .btn{margin-top:8px}
.docc__ok{display:flex;justify-content:center;gap:6px;font-size:.78rem;color:var(--green);font-weight:800;margin-bottom:6px}
.rel{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.rel a{display:flex;align-items:center;gap:11px;text-decoration:none;color:var(--ink);font-weight:700;font-size:.9rem;line-height:1.4;padding:6px;border-radius:12px;transition:background .15s}
.rel a:hover{background:var(--tint2);color:var(--blue2)}
.rel img{width:64px;height:44px;object-fit:cover;border-radius:9px;flex:0 0 auto;border:1px solid var(--line2)}
@media(max-width:1020px){.alayout{grid-template-columns:1fr}.aside{position:static;max-height:none;overflow:visible}.aside .box--toc{display:none}.mtoc{display:block}}

/* ---------- footer ---------- */
.ftr{background:linear-gradient(160deg,#0b2540,#0c3866);color:rgba(255,255,255,.78);margin-top:0}
.ftr__in{padding:clamp(44px,6vw,70px) 0 0}
.ftr__g{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:clamp(24px,4vw,48px);padding-bottom:36px}
.ftr .brand__t b{color:#fff}.ftr .brand__t small{color:var(--blue3)}
.ftr__about{font-size:.92rem;margin:14px 0 16px;max-width:40ch}
.ftr h4{color:#fff;font-size:1rem;margin:0 0 14px;font-weight:800}
.ftr ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:9px}
.ftr ul a{color:rgba(255,255,255,.75);text-decoration:none;font-size:.92rem;font-weight:600}
.ftr ul a:hover{color:#fff}
.soc{display:flex;gap:8px}
.soc a{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:12px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);color:#fff;transition:background .2s,transform .2s}
.soc a:hover{background:var(--blue);transform:translateY(-2px)}
.ftr__cl{margin-bottom:14px;font-size:.88rem}
.ftr__cl strong{display:block;color:#fff;font-size:.94rem}
.ftr__cl a{color:var(--blue3);font-weight:800;text-decoration:none}
.ftr__bar{border-top:1px solid rgba(255,255,255,.12);padding:18px 0;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:.84rem}
.ftr__bar a{color:#fff;text-decoration:none;font-weight:700}
@media(max-width:900px){.ftr__g{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.ftr__g{grid-template-columns:1fr}.ftr__bar{justify-content:center;text-align:center}}

/* ---------- floating action ---------- */
.fab{position:fixed;inset-inline-end:18px;bottom:18px;z-index:1500;display:flex;flex-direction:column;gap:12px}
.fab a{position:relative;display:inline-flex;align-items:center;justify-content:center;width:56px;height:56px;border-radius:50%;color:#fff;box-shadow:0 14px 30px -10px rgba(0,0,0,.45);transition:transform .2s}
.fab a:hover{transform:scale(1.06)}
.fab .ic{width:26px;height:26px}
.fab .wa{background:linear-gradient(135deg,var(--wa),var(--wa2))}
.fab .cl{background:linear-gradient(135deg,var(--blue),var(--blue2))}
.fab .wa::after{content:"";position:absolute;inset:0;border-radius:50%;background:var(--wa);z-index:-1;animation:pulse 2.4s ease-out infinite}
@keyframes pulse{0%{transform:scale(1);opacity:.5}75%,100%{transform:scale(1.6);opacity:0}}
@media(max-width:600px){.fab{inset-inline-end:14px;bottom:14px}.fab a{width:52px;height:52px}}
.totop{position:fixed;inset-inline-start:18px;bottom:18px;z-index:1400;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;color:var(--ink);box-shadow:var(--sh);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;opacity:0;pointer-events:none;transform:translateY(10px);transition:all .2s}
.totop.show{opacity:1;pointer-events:auto;transform:none}

/* reveal */
.rv{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}
.rv.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.rv{opacity:1;transform:none;transition:none}*{animation:none!important;transition:none!important}}
@media print{.topbar,.hdr,.fab,.totop,.aside,.share,.ftr,.prog{display:none!important}.ahero{background:none;color:#000;padding:0}.alayout{margin:0;display:block}}

/* mobile header fit */
@media(max-width:560px){.hdr__in{gap:8px}.brand{min-width:0;flex:1 1 auto;gap:8px}.brand__t{min-width:0}.brand__t b{font-size:.9rem;overflow:hidden;text-overflow:ellipsis}.hdr__act{gap:6px;flex:0 0 auto}.lang{height:40px;padding:0 9px}.burger{width:42px;height:40px}}
@media(max-width:360px){.brand img{width:36px;height:36px}.brand__t b{font-size:.82rem}}