/* ===== 写材料助手 · 成熟产品级视觉系统 (coral) =====
设计取向：克制、清晰、可信。单一点缀色，发丝线分区，留白充足。 */
:root{
--bg:#FFFFFF; --bg-soft:#F7F8FA; --bg-tint:#FFF5F3;
--ink:#0E1116; --ink-soft:#2A2F36; --muted:#5B636C; --muted-2:#9AA1AB;
--line:#ECEEF1; --line-strong:#E1E4E9;
--accent:#F2503C; --accent-dark:#D23A28; --accent-soft:#FDE7E3;
--accent-glow:rgba(242,80,60,.16);
--radius:16px; --radius-md:12px; --radius-sm:9px;
--container:1200px; --header-h:68px;
--font-display:"Sora","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
--font-sans:"Manrope","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
--ease:cubic-bezier(.22,.61,.36,1);
--shadow-xs:0 1px 2px rgba(14,17,22,.05);
--shadow-sm:0 1px 2px rgba(14,17,22,.05), 0 6px 16px rgba(14,17,22,.05);
--shadow-md:0 4px 14px rgba(14,17,22,.07), 0 18px 44px rgba(14,17,22,.08);
--shadow-lg:0 30px 80px rgba(14,17,22,.12);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
margin:0; font-family:var(--font-sans); color:var(--ink); background:var(--bg);
line-height:1.65; -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
overflow-x:hidden;
}
:focus-visible{outline:2px solid var(--accent); outline-offset:2px; border-radius:6px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip-link{position:absolute;top:-48px;left:0;background:var(--ink);color:#fff;padding:10px 18px;z-index:200;border-radius:0 0 10px 0;transition:top .2s}
.skip-link:focus{top:0}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(100% - 48px,var(--container));margin-inline:auto}
/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.72);backdrop-filter:saturate(180%) blur(14px);-webkit-backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid transparent;transition:border-color .3s,background .3s,box-shadow .3s}
.site-header.is-scrolled{border-bottom-color:var(--line);background:rgba(255,255,255,.86);box-shadow:0 6px 24px rgba(14,17,22,.05)}
.nav{height:var(--header-h);display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:18px;letter-spacing:-.01em;flex-shrink:0}
.logo{display:grid;place-items:center;width:32px;height:32px;border-radius:9px;background:linear-gradient(135deg,var(--accent),#FF7A5C);color:#fff;font-size:15px;font-weight:700;box-shadow:0 4px 12px rgba(242,80,60,.3)}
.nav-links{display:flex;align-items:center;gap:30px;color:var(--muted);font-size:15px;font-weight:500}
.nav-links a{position:relative;transition:color .2s}
.nav-links a:hover{color:var(--ink)}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-6px;width:0;height:2px;background:var(--accent);border-radius:2px;transition:width .25s var(--ease)}
.nav-links a:hover::after{width:100%}
.nav-cta{display:flex;align-items:center;gap:12px}
.nav-toggle{display:none;width:40px;height:40px;border:0;background:transparent;color:var(--ink);cursor:pointer}
/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 22px;border-radius:12px;font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;font-family:inherit;transition:transform .18s var(--ease),background .2s,box-shadow .2s,border-color .2s;text-align:center;white-space:nowrap}
.btn:hover{transform:translateY(-1px)}
.btn--primary{background:linear-gradient(180deg,var(--accent),var(--accent-dark));color:#fff;box-shadow:0 8px 20px rgba(242,80,60,.24)}
.btn--primary:hover{box-shadow:0 12px 28px rgba(242,80,60,.34)}
.btn--secondary{background:#fff;color:var(--ink);border-color:var(--line-strong)}
.btn--secondary:hover{border-color:var(--muted);background:var(--bg-soft)}
.btn--dark{background:var(--ink);color:#fff}
.btn--dark:hover{background:var(--ink-soft)}
.btn--inverse{background:#fff;color:var(--accent-dark)}
.btn--inverse:hover{background:#F3F3F3;box-shadow:var(--shadow-md)}
.btn--lg{padding:15px 30px;font-size:16px;border-radius:13px}
.btn--ghost-light{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.28)}
.btn--ghost-light:hover{background:rgba(255,255,255,.22)}
/* ---------- Eyebrow (neutral ghost pill) ---------- */
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 13px;border-radius:999px;background:var(--bg-soft);border:1px solid var(--line);color:var(--ink-soft);font-size:12.5px;font-weight:700;letter-spacing:.04em;margin-bottom:18px}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
.eyebrow--light{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.18);color:#fff}
.eyebrow--light::before{background:#fff}
/* ---------- Hero ---------- */
.hero{position:relative;padding:104px 0 92px;background:var(--bg);overflow:hidden}
.hero__bg{position:absolute;inset:0;z-index:0;pointer-events:none;background-image:radial-gradient(circle at 1px 1px,rgba(14,17,22,.045) 1px,transparent 0);background-size:26px 26px;-webkit-mask-image:radial-gradient(ellipse 78% 70% at 50% 42%,#000 38%,transparent 100%);mask-image:radial-gradient(ellipse 78% 70% at 50% 42%,#000 38%,transparent 100%)}
.hero::before{content:"";position:absolute;top:-140px;right:-80px;width:680px;height:520px;background:radial-gradient(58% 50% at 70% 35%,rgba(242,80,60,.13),rgba(242,80,60,0) 70%);filter:blur(8px);pointer-events:none;z-index:0}
.hero__grid{position:relative;z-index:1;display:grid;grid-template-columns:1.02fr 1fr;gap:56px;align-items:center}
.hero__content{max-width:560px}
.hero h1{font-family:var(--font-display);font-size:clamp(38px,4.6vw,58px);line-height:1.12;font-weight:700;margin:0 0 22px;letter-spacing:-.02em}
.hero h1 .hl{color:var(--accent)}
.hero__sub{font-size:19px;color:var(--muted);margin:0 0 32px;line-height:1.7}
.hero__actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:22px}
.hero__trust{display:flex;align-items:center;gap:12px;font-size:14px;color:var(--muted);margin:0}
.hero__avatars{display:flex}
.hero__avatars span{width:30px;height:30px;border-radius:50%;margin-left:-8px;border:2px solid #fff;display:grid;place-items:center;font-size:11px;font-weight:700;color:#fff;background:linear-gradient(135deg,#F2503C,#FF8A5C)}
.hero__avatars span:first-child{margin-left:0}
/* ---------- Hero mock (real product window) ---------- */
.hero__visual{position:relative;display:flex;justify-content:center}
.hero__visual::before{content:"";position:absolute;left:50%;top:48%;width:96%;height:84%;transform:translate(-50%,-50%);background:radial-gradient(50% 50% at 50% 50%,var(--accent-glow),transparent 70%);filter:blur(40px);z-index:0;pointer-events:none}
.mock{position:relative;width:100%;max-width:520px;z-index:1;border:1px solid var(--line);border-radius:18px;background:#fff;box-shadow:var(--shadow-lg);overflow:hidden}
.mock__bar{display:flex;align-items:center;gap:7px;padding:13px 16px;background:#FBFBFC;border-bottom:1px solid var(--line)}
.mock__bar .dot{width:10px;height:10px;border-radius:50%;background:#E2E4E8}
.mock__bar .dot:nth-child(1){background:#F2503C}
.mock__bar .dot:nth-child(2){background:#F5B800}
.mock__bar .dot:nth-child(3){background:#2ABF6A}
.mock__title{margin-left:10px;font-size:13px;color:var(--muted);font-weight:500}
.mock__ai{margin-left:auto;display:inline-flex;align-items:center;gap:5px;padding:3px 10px;border-radius:999px;background:var(--accent-soft);color:var(--accent-dark);font-size:11px;font-weight:700;letter-spacing:.04em}
.mock__ai svg{width:12px;height:12px}
.mock__body{display:grid;grid-template-columns:188px 1fr}
.mock__side{padding:16px;border-right:1px solid var(--line);background:#FCFCFD}
.mock__input{display:flex;align-items:center;gap:8px;padding:10px 12px;border-radius:10px;background:#fff;border:1px solid var(--line);color:var(--muted-2);font-size:12px;line-height:1.4}
.mock__input svg{width:14px;height:14px;color:var(--accent);flex-shrink:0}
.mock__side-label{margin:16px 0 10px;font-size:11px;font-weight:700;letter-spacing:.06em;color:var(--muted-2);text-transform:uppercase}
.mock__files{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.mock__files li{display:flex;align-items:center;gap:9px;font-size:12.5px;color:var(--ink-soft);padding:8px 10px;border-radius:9px;background:#fff;border:1px solid var(--line)}
.mock__files .fi{width:18px;height:18px;display:grid;place-items:center;flex-shrink:0;color:var(--accent)}
.mock__files em{margin-left:auto;font-style:normal;font-size:11px;color:var(--muted-2)}
.mock__doc{padding:18px 20px}
.mock__doc-head{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.mock__tag{display:inline-block;font-size:11px;font-weight:700;color:var(--accent-dark);background:var(--accent-soft);padding:3px 9px;border-radius:999px}
.mock__doc h4{margin:0;font-size:14px;font-weight:700;color:var(--ink)}
.mock__doc p{font-size:12.5px;color:var(--muted);line-height:1.7;margin:0 0 11px}
.doc-hl{color:var(--accent-dark);background:linear-gradient(transparent 60%,var(--accent-soft) 60%);border-radius:3px;padding:0 2px;font-weight:600}
.mock__hint{display:inline-flex;align-items:center;gap:6px;margin-top:4px;font-size:11.5px;font-weight:600;color:var(--accent-dark);background:var(--accent-soft);padding:6px 11px;border-radius:999px}
.mock__hint svg{width:13px;height:13px}
/* ---------- Trust strip (wordmarks) ---------- */
.trust{position:relative;z-index:1;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:linear-gradient(180deg,#fff,var(--bg-soft))}
.trust__inner{display:flex;align-items:center;gap:24px 28px;flex-wrap:wrap;padding:24px 0}
.trust__label{font-size:13px;font-weight:600;color:var(--muted);letter-spacing:.02em;white-space:nowrap}
.trust__logos{display:flex;align-items:center;gap:10px 12px;flex-wrap:wrap}
.trust__logo{display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border:1px solid var(--line);border-radius:10px;background:#fff;font-size:13.5px;font-weight:600;color:var(--muted);transition:color .2s,border-color .2s}
.trust__logo::before{content:"";width:13px;height:13px;border-radius:4px;background:linear-gradient(135deg,var(--accent),#FF8A5C);opacity:.85;flex-shrink:0}
.trust__logo:hover{color:var(--ink);border-color:var(--line-strong)}
/* ---------- Sections ---------- */
.section{padding:112px 0;position:relative}
.section--soft{background:var(--bg-soft)}
.section__head{max-width:660px;margin-bottom:54px}
.section__head--center{margin-inline:auto;text-align:center}
.section__head h2{font-family:var(--font-display);font-size:clamp(30px,3.6vw,42px);line-height:1.2;font-weight:700;margin:0 0 14px;letter-spacing:-.02em}
.section__head > p{font-size:18px;color:var(--muted);margin:0}
.section__head--center .eyebrow{margin-inline:auto}
/* ---------- Bento features ---------- */
.bento{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.tile{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow-sm);overflow:hidden;transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s}
.tile::after{content:"";position:absolute;inset:0;border-radius:inherit;padding:1.5px;background:linear-gradient(135deg,var(--accent),rgba(242,80,60,0) 62%);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:0;transition:opacity .35s ease;pointer-events:none}
.tile:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong)}
.tile:hover::after{opacity:1}
.tile__icon{display:grid;place-items:center;width:46px;height:46px;border-radius:12px;background:var(--bg-soft);border:1px solid var(--line);color:var(--accent);margin-bottom:18px}
.tile__icon svg{width:24px;height:24px}
.tile h3{font-size:19px;font-weight:700;margin:0 0 8px;letter-spacing:-.01em}
.tile p{color:var(--muted);margin:0;font-size:15px;line-height:1.65}
.tile--lg{grid-column:span 2}
.tile--lg .tile__preview{margin-top:18px;border:1px solid var(--line);border-radius:12px;background:var(--bg-soft);padding:14px 16px}
.tile--lg .pv{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--ink-soft);margin:7px 0}
.tile--lg .pv__ic{width:18px;height:18px;border-radius:50%;background:var(--accent-soft);color:var(--accent-dark);display:grid;place-items:center;font-size:11px;font-weight:800;flex-shrink:0}
.tile--wide{grid-column:span 3;display:flex;align-items:center;gap:24px;padding:26px 30px;background:linear-gradient(120deg,var(--bg-tint),#fff)}
.tile--wide .tile__icon{margin-bottom:0;flex-shrink:0;width:52px;height:52px}
.tile--wide .tile__cta{margin-left:auto;flex-shrink:0}
.tile--wide h3{margin-bottom:4px}
/* ---------- Steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;position:relative}
.step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow-sm)}
.step__num{display:grid;place-items:center;width:44px;height:44px;border-radius:12px;background:var(--accent);color:#fff;font-weight:800;font-size:18px;margin-bottom:18px;box-shadow:0 6px 16px rgba(242,80,60,.26)}
.step h3{font-size:19px;font-weight:700;margin:0 0 8px}
.step p{color:var(--muted);margin:0;font-size:15px;line-height:1.65}
/* ---------- Scenes ---------- */
.tabs{display:inline-flex;gap:6px;padding:5px;border-radius:12px;background:var(--bg-soft);border:1px solid var(--line);margin-bottom:36px;flex-wrap:wrap}
.tabs button{border:0;background:transparent;font-family:inherit;font-size:14px;font-weight:600;color:var(--muted);padding:8px 16px;border-radius:9px;cursor:pointer;transition:all .2s}
.tabs button.is-active{background:#fff;color:var(--ink);box-shadow:var(--shadow-sm)}
.template-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.tcard{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-sm);transition:transform .25s var(--ease),box-shadow .25s,border-color .25s}
.tcard:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong)}
.tcard::after{content:"";position:absolute;inset:0;border-radius:inherit;padding:1.5px;background:linear-gradient(135deg,var(--accent),rgba(242,80,60,0) 62%);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:0;transition:opacity .35s ease;pointer-events:none}
.tcard:hover::after{opacity:1}
.tcard__tag{display:inline-block;font-size:12px;font-weight:700;color:var(--accent-dark);background:var(--accent-soft);padding:4px 10px;border-radius:999px;margin-bottom:14px}
.tcard h3{font-size:19px;font-weight:700;margin:0 0 7px}
.tcard p{color:var(--muted);margin:0;font-size:14.5px;line-height:1.6}
.tcard__go{margin-top:16px;font-size:14px;font-weight:600;color:var(--accent-dark);display:inline-flex;align-items:center;gap:5px}
/* ---------- Dark metrics band (count-up) ---------- */
.metrics{position:relative;background:var(--ink);color:#fff;padding:84px 0;overflow:hidden}
.metrics::before{content:"";position:absolute;inset:0;background:radial-gradient(70% 120% at 85% -10%,var(--accent-glow),transparent 55%)}
.metrics::after{content:"";position:absolute;inset:0;opacity:.4;background-image:radial-gradient(circle at 1px 1px,rgba(255,255,255,.05) 1px,transparent 0);background-size:30px 30px}
.metrics__inner{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.metric{text-align:center}
.metric strong{display:block;font-family:var(--font-display);font-size:clamp(38px,4.4vw,56px);font-weight:800;line-height:1;letter-spacing:-.02em;margin-bottom:10px;color:#fff}
.metric span{display:block;font-size:13px;font-weight:600;letter-spacing:.04em;color:var(--muted-2);text-transform:uppercase}
/* ---------- Testimonials ---------- */
.quotes{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.quote{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow-sm)}
.quote::before{content:"\201C";position:absolute;top:10px;left:20px;font-family:Georgia,serif;font-size:64px;color:var(--accent-soft);line-height:1}
.quote p{position:relative;font-size:17px;color:var(--ink);line-height:1.75;margin:0 0 22px}
.quote__author{display:flex;align-items:center;gap:12px}
.quote__avatar{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;font-size:14px;font-weight:700;color:#fff;background:linear-gradient(135deg,#F2503C,#FF8A5C);flex-shrink:0}
.quote__meta strong{display:block;font-size:15px;font-weight:700}
.quote__meta span{font-size:13px;color:var(--muted)}
/* ---------- CTA (flat, no orbs) ---------- */
.cta{position:relative;padding:96px 0;background:var(--accent);overflow:hidden}
.cta::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(255,255,255,.07),transparent 45%);pointer-events:none}
.cta__inner{position:relative;max-width:620px;margin:0 auto;text-align:center;color:#fff}
.cta h2{font-family:var(--font-display);font-size:clamp(30px,3.6vw,42px);margin:0 0 12px;font-weight:700;letter-spacing:-.02em}
.cta p{font-size:18px;margin:0 0 30px;opacity:.92}
.cta-form{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.cta-form input{width:320px;max-width:100%;height:54px;padding:0 20px;border:0;border-radius:13px;font-size:16px;font-family:inherit;background:#fff;color:var(--ink)}
.cta-form input::placeholder{color:var(--muted-2)}
.cta-form input:focus{outline:none;box-shadow:0 0 0 3px rgba(255,255,255,.55)}
.cta__note{margin:16px 0 0;font-size:13px;opacity:.82}
.cta-success{display:none;margin-top:20px;font-size:16px;font-weight:600}
.cta-success.is-visible{display:block}
/* ---------- Footer ---------- */
.site-footer{padding:64px 0 40px;background:#0C0F14;color:#9AA1AB;position:relative;overflow:hidden}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--accent),transparent);opacity:.5}
.footer__top{position:relative;display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding-bottom:40px}
.footer__brand .brand{color:#fff;margin-bottom:14px}
.footer__brand .logo{background:linear-gradient(135deg,var(--accent),#FF7A5C)}
.footer__brand p{font-size:14.5px;line-height:1.7;margin:0;max-width:280px;color:#8B929D}
.footer__col h4{font-size:14px;font-weight:700;color:#fff;margin:0 0 16px;letter-spacing:.02em}
.footer__col a{display:block;font-size:14.5px;color:#8B929D;margin-bottom:11px;transition:color .2s}
.footer__col a:hover{color:#fff}
.footer__bottom{position:relative;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:28px;border-top:1px solid rgba(255,255,255,.08);font-size:13.5px;color:#79808B}
.footer__bottom a:hover{color:#fff}
/* ---------- Reveal animation + stagger ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}
.bento .reveal:nth-child(1){transition-delay:0s}.bento .reveal:nth-child(2){transition-delay:.07s}.bento .reveal:nth-child(3){transition-delay:.14s}.bento .reveal:nth-child(4){transition-delay:.21s}.bento .reveal:nth-child(5){transition-delay:.28s}.bento .reveal:nth-child(6){transition-delay:.35s}.bento .reveal:nth-child(7){transition-delay:.42s}
.template-grid .reveal:nth-child(1){transition-delay:0s}.template-grid .reveal:nth-child(2){transition-delay:.07s}.template-grid .reveal:nth-child(3){transition-delay:.14s}.template-grid .reveal:nth-child(4){transition-delay:.21s}.template-grid .reveal:nth-child(5){transition-delay:.28s}.template-grid .reveal:nth-child(6){transition-delay:.35s}
/* ---------- Responsive ---------- */
@media (max-width:960px){
.hero__grid{grid-template-columns:1fr}
.hero__visual{order:-1}
.bento,.steps,.template-grid{grid-template-columns:repeat(2,1fr)}
.tile--wide,.tile--lg{grid-column:span 2}
.metrics__inner{grid-template-columns:repeat(2,1fr);gap:36px 24px}
.quotes{grid-template-columns:1fr}
.footer__top{grid-template-columns:1fr 1fr}
}
@media (max-width:720px){
.nav-links{display:none}
.nav-links.is-open{display:flex;position:absolute;top:var(--header-h);left:0;right:0;flex-direction:column;background:#fff;border-bottom:1px solid var(--line);padding:18px 24px;gap:14px;box-shadow:var(--shadow-md)}
.nav-toggle{display:grid;place-items:center}
.bento,.steps,.template-grid,.metrics__inner{grid-template-columns:1fr}
.tile--wide,.tile--lg{grid-column:span 1;flex-direction:column;align-items:flex-start}
.tile--wide .tile__cta{margin-left:0}
.mock__body{grid-template-columns:1fr}
.mock__side{border-right:0;border-bottom:1px solid var(--line)}
.footer__top{grid-template-columns:1fr}
.footer__bottom{flex-direction:column}
.section{padding:80px 0}
.hero{padding:80px 0 64px}
}
@media (prefers-reduced-motion:reduce){
*{animation:none!important;transition:none!important;scroll-behavior:auto!important}
.reveal{opacity:1!important;transform:none!important}
}
/* ---------- 图片展示区（SEO 配图） ---------- */
.showcase { margin: 0; }
.showcase img {
width: 100%; height: auto; display: block; border-radius: 18px;
box-shadow: 0 30px 60px -30px rgba(17, 20, 24, .22);
}
.assistant { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.assistant__text h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); line-height: 1.25; margin: 14px 0 16px; }
.assistant__list { list-style: none; padding: 0; margin: 20px 0 28px; display: grid; gap: 12px; }
.assistant__list li { position: relative; padding-left: 28px; color: var(--muted); font-size: .98rem; line-height: 1.6; }
.assistant__list li::before {
content: ""; position: absolute; left: 0; top: 6px; width: 16px; height: 16px; border-radius: 50%;
background: var(--accent);
-webkit-mask: url("data:image/svg+xml;utf8,") center / 16px no-repeat;
mask: url("data:image/svg+xml;utf8,") center / 16px no-repeat;
}
.assistant__media { margin: 0; }
.assistant__media img { width: 100%; height: auto; display: block; border-radius: 18px; box-shadow: 0 24px 50px -28px rgba(17, 20, 24, .2); }
@media (max-width: 860px) { .assistant { grid-template-columns: 1fr; gap: 28px; } }
/* ---------- FAQ 折叠 ---------- */
.faq { border-top: 1px solid var(--line); max-width: 820px; margin: 0 auto; }
.faq__item { border-bottom: 1px solid var(--line); }
.faq__q {
width: 100%; text-align: left; background: none; border: 0; cursor: pointer;
padding: 22px 0; font-family: inherit; font-size: 1.05rem; font-weight: 600; color: var(--ink);
display: flex; justify-content: space-between; align-items: center; gap: 16px;
}
.faq__q .plus { position: relative; width: 18px; height: 18px; flex: none; transition: transform .3s ease; }
.faq__q .plus::before, .faq__q .plus::after { content: ""; position: absolute; background: var(--accent); border-radius: 2px; }
.faq__q .plus::before { left: 8px; top: 0; width: 2px; height: 18px; }
.faq__q .plus::after { top: 8px; left: 0; width: 18px; height: 2px; }
.faq__item.is-open .faq__q .plus { transform: rotate(45deg); }
.faq__a { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq__a p { margin: 0; padding: 0 0 22px; color: var(--muted); line-height: 1.75; font-size: .98rem; }